/* ==========================================================
   VICONS — Website công ty
   Nhận diện theo name card: navy + cam, mảng chéo, ảnh đen trắng
   ========================================================== */

:root {
  --navy: #0f4c81;
  --navy-dark: #0a3560;
  --navy-deep: #07233f;
  --orange: #f58025;
  --orange-dark: #d9661a;
  --charcoal: #26343d;
  --ink: #1d2a33;
  --muted: #5d6b75;
  --line: #dfe5ea;
  --paper: #f6f4f0;
  --white: #ffffff;
  --radius: 4px;
  --shadow: 0 18px 40px -18px rgba(7, 35, 63, .35);
  --container: 1200px;
  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; font-weight: 700; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- Kiểu chữ dùng chung ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 13px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
  color: var(--orange);
}
.eyebrow::before { content: ""; width: 36px; height: 3px; background: var(--orange); }
.section-title {
  font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; color: var(--navy-deep);
  letter-spacing: -.01em; margin-top: 14px;
}
.section-lead { color: var(--muted); max-width: 640px; margin-top: 16px; font-size: 17px; }
.section { padding: 110px 0; position: relative; }
.section-head { margin-bottom: 56px; }
.section-head.center { text-align: center; }
.section-head.center .section-lead { margin-left: auto; margin-right: auto; }
.section-head.center .eyebrow::after { content: ""; width: 36px; height: 3px; background: var(--orange); }

/* ---------- Nút ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 28px; border-radius: var(--radius); border: 2px solid transparent;
  font-family: inherit; font-size: 14px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  cursor: pointer; transition: background .25s, color .25s, border-color .25s, transform .25s;
}
.btn svg { width: 18px; height: 18px; transition: transform .25s; }
.btn:hover svg { transform: translateX(4px); }
.btn-primary { background: var(--orange); color: var(--white); }
.btn-primary:hover { background: var(--orange-dark); }
.btn-ghost { border-color: rgba(255,255,255,.55); color: var(--white); }
.btn-ghost:hover { background: var(--white); color: var(--navy-deep); }
.btn-navy { background: var(--navy); color: var(--white); }
.btn-navy:hover { background: var(--navy-dark); }
.btn-outline { border-color: var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: var(--white); }

/* ==========================================================
   HEADER
   ========================================================== */
.topbar {
  background: var(--navy-deep); color: rgba(255,255,255,.78); font-size: 13px;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 40px; gap: 16px; }
.topbar-info { display: flex; gap: 28px; }
.topbar-info a { display: inline-flex; align-items: center; gap: 8px; transition: color .2s; }
.topbar-info a:hover { color: var(--orange); }
.topbar-info svg { width: 14px; height: 14px; color: var(--orange); }
.lang-switch { display: flex; gap: 4px; }
.lang-switch button {
  background: none; border: 0; color: rgba(255,255,255,.6); font: inherit; font-weight: 700;
  font-size: 12px; letter-spacing: .1em; padding: 4px 8px; cursor: pointer; border-radius: 2px;
}
.lang-switch button.active { background: var(--orange); color: var(--white); }

.header {
  position: sticky; top: 0; z-index: 100; background: var(--white);
  border-bottom: 1px solid var(--line); transition: box-shadow .3s;
}
.header.scrolled { box-shadow: 0 10px 30px -15px rgba(7,35,63,.25); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 96px; gap: 24px; }
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand img { height: 68px; width: auto; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav > a, .nav .has-sub > a {
  position: relative; display: block; padding: 10px 14px;
  font-size: 14.5px; font-weight: 600; color: var(--charcoal); transition: color .2s;
}
.nav > a::after, .nav .has-sub > a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px;
  background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .25s;
}
.nav > a:hover, .nav .has-sub:hover > a, .nav a.active { color: var(--navy); }
.nav > a:hover::after, .nav .has-sub:hover > a::after, .nav a.active::after { transform: scaleX(1); }
.has-sub { position: relative; }
.submenu {
  position: absolute; top: 100%; left: 0; min-width: 300px; background: var(--white);
  border-top: 3px solid var(--orange); box-shadow: var(--shadow); padding: 10px 0;
  opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .25s;
}
.has-sub:hover .submenu, .has-sub:focus-within .submenu { opacity: 1; visibility: visible; transform: none; }
.submenu a { display: flex; gap: 12px; padding: 10px 20px; font-size: 14px; font-weight: 500; transition: background .2s, color .2s; }
.submenu a b { color: var(--orange); font-weight: 800; }
.submenu a:hover { background: var(--paper); color: var(--navy); }
.header-cta { flex-shrink: 0; }
.header-cta .btn { padding: 12px 22px; font-size: 13px; }

.menu-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: var(--white);
  border-radius: var(--radius); cursor: pointer; align-items: center; justify-content: center;
}
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  display: block; width: 20px; height: 2px; background: var(--navy-deep); position: relative; transition: .25s;
}
.menu-toggle span::before, .menu-toggle span::after { content: ""; position: absolute; left: 0; }
.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }
.menu-open .menu-toggle span { background: transparent; }
.menu-open .menu-toggle span::before { top: 0; transform: rotate(45deg); }
.menu-open .menu-toggle span::after { top: 0; transform: rotate(-45deg); }

/* ==========================================================
   HERO — mảng navy cắt chéo + ảnh đen trắng + tam giác cam
   ========================================================== */
.hero {
  position: relative; min-height: min(calc(100vh - 124px), 860px); min-height: min(calc(100svh - 124px), 860px);
  display: flex; align-items: center; overflow: hidden;
  background: var(--navy-deep); color: var(--white);
}
.hero-photo {
  position: absolute; inset: 0 0 0 38%;
  background: url("../assets/img/hero-glass.jpg") center/cover no-repeat;
  filter: grayscale(1) contrast(1.05);
}
.hero-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7,35,63,.55), rgba(7,35,63,.05) 60%); }
.hero-panel {
  position: absolute; inset: 0 auto 0 0; width: 62%;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 60%, var(--navy-deep) 100%);
  clip-path: polygon(0 0, 100% 0, 72% 100%, 0 100%);
}
.hero-panel::before {
  /* lưới bản vẽ kỹ thuật */
  content: ""; position: absolute; inset: 0; opacity: .12;
  background-image:
    linear-gradient(rgba(255,255,255,.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(120deg, #000 10%, transparent 75%);
  -webkit-mask-image: linear-gradient(120deg, #000 10%, transparent 75%);
}
.hero-tri-orange {
  position: absolute; right: 0; bottom: 0; width: 34vw; max-width: 460px; aspect-ratio: 1;
  background: var(--orange); clip-path: polygon(100% 18%, 100% 100%, 18% 100%); opacity: .95;
}
.hero-tri-navy {
  position: absolute; right: 0; top: 0; width: 22vw; max-width: 300px; aspect-ratio: 1;
  background: var(--navy); clip-path: polygon(0 0, 100% 0, 100% 100%); opacity: .9;
}
.hero-content { position: relative; z-index: 2; padding: 90px 0 140px; max-width: 680px; }
.hero-content .eyebrow { color: var(--orange); }
/* Slogan: chữ trồi lên từng từ, dấu · màu cam, vệt sáng chạy qua cả dòng */
.hero-title {
  margin-top: 20px; font-size: clamp(30px, 4.1vw, 56px); font-weight: 800;
  letter-spacing: -.01em; line-height: 1.12; text-transform: uppercase;
}
.hero-title .line { display: block; }
.hero-title .w { display: inline-block; overflow: hidden; vertical-align: top; padding: .32em .04em .12em; margin: -.32em -.04em -.12em; }
.hero-title .wi {
  display: inline-block; transform: translateY(108%) rotate(4deg); transform-origin: left bottom;
  transition: transform .9s cubic-bezier(.2,.75,.2,1);
}
.hero-title.play .wi { transform: none; }
.hero-title .wi:not(.sep) {
  padding-top: .3em; margin-top: -.3em;
  background: linear-gradient(100deg, #fff 42%, #ffcf9b 50%, #fff 58%);
  background-size: 260% 100%; background-position: 100% 0;
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-title .wi.sep { color: var(--orange); padding: 0 .04em; }
.hero-title.shine .wi:not(.sep) { animation: sloganShine 6s ease-in-out infinite; }
@keyframes sloganShine { 0%, 55% { background-position: 100% 0; } 100% { background-position: -60% 0; } }
.hero-rule {
  width: 0; height: 4px; margin-top: 18px; background: var(--orange);
  transition: width 1s cubic-bezier(.2,.75,.2,1) .9s;
}
.hero-title.play + .hero-rule { width: 120px; }
.hero-sub { margin-top: 28px; max-width: 540px; font-size: 18px; color: rgba(255,255,255,.82); }
.hero-actions { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 16px; }
.hero-company {
  position: absolute; left: 24px; bottom: 96px; z-index: 2;
  font-size: 12px; letter-spacing: .24em; text-transform: uppercase; color: rgba(255,255,255,.55);
}
.hero-scroll {
  position: absolute; bottom: 100px; left: 50%; z-index: 2; width: 26px; height: 42px;
  border: 2px solid rgba(255,255,255,.5); border-radius: 14px; transform: translateX(-50%);
}
.hero-scroll::after {
  content: ""; position: absolute; top: 8px; left: 50%; width: 4px; height: 8px; border-radius: 2px;
  background: var(--orange); transform: translateX(-50%); animation: scrollDot 1.8s infinite;
}
@keyframes scrollDot { 0% { opacity: 1; top: 8px; } 80% { opacity: 0; top: 22px; } 100% { opacity: 0; } }

/* ==========================================================
   DẢI CAM KẾT — 4 thẻ navy nổi trên hero, hover chuyển cam
   ========================================================== */
.pledges { position: relative; z-index: 5; margin-top: -86px; }
.pledges-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pledge {
  position: relative; overflow: hidden; padding: 32px 28px 28px; color: var(--white);
  background:
    linear-gradient(135deg, transparent 62%, rgba(255,255,255,.05) 62%, rgba(255,255,255,.05) 78%, transparent 78%),
    linear-gradient(160deg, #135592 0%, var(--navy-dark) 55%, var(--navy-deep) 100%);
  box-shadow: 0 24px 45px -22px rgba(7,35,63,.7);
  transition: transform .4s cubic-bezier(.2,.75,.2,1), box-shadow .4s;
}
.pledge::before {
  /* lưới bản vẽ mờ */
  content: ""; position: absolute; inset: 0; opacity: .07; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,1) 1px, transparent 1px);
  background-size: 28px 28px;
}
.pledge::after {
  /* lớp cam trượt lên khi hover */
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(160deg, #f89240 0%, var(--orange) 45%, var(--orange-dark) 100%);
  transform: translateY(101%); transition: transform .45s cubic-bezier(.2,.75,.2,1);
}
.pledge > * { position: relative; z-index: 1; }
.pledge-bar { position: absolute !important; left: 0; top: 0; height: 4px; width: 0; background: var(--orange); transition: width .9s cubic-bezier(.2,.75,.2,1) .3s; z-index: 2 !important; }
.pledge.in .pledge-bar { width: 100%; }
.pledge-no {
  position: absolute !important; right: 14px; bottom: -22px; font-size: 104px; font-weight: 800; line-height: 1;
  color: transparent; -webkit-text-stroke: 1.5px rgba(255,255,255,.14); transition: -webkit-text-stroke-color .4s, transform .5s;
}
.pledge-icon {
  width: 56px; height: 56px; display: grid; place-items: center; margin-bottom: 22px;
  background: var(--orange); color: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
  transition: background .4s, color .4s, transform .5s;
}
.pledge-icon svg { width: 28px; height: 28px; }
.pledge h3 { font-size: 19px; font-weight: 700; letter-spacing: .01em; }
.pledge p { margin: 10px 0 0; font-size: 14.5px; color: rgba(255,255,255,.75); line-height: 1.6; transition: color .4s; max-width: 260px; }
.pledge-tag {
  display: inline-block; margin-top: 18px; padding: 5px 11px; font-size: 11px; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--orange);
  border: 1px solid rgba(245,128,37,.55); transition: color .4s, border-color .4s;
}
.pledge:hover { transform: translateY(-10px); box-shadow: 0 30px 55px -24px rgba(217,102,26,.75); }
.pledge:hover::after { transform: none; }
.pledge:hover .pledge-icon { background: var(--white); color: var(--orange); transform: rotate(-8deg) scale(1.05); }
.pledge:hover p { color: rgba(255,255,255,.95); }
.pledge:hover .pledge-tag { color: var(--white); border-color: rgba(255,255,255,.7); }
.pledge:hover .pledge-no { -webkit-text-stroke-color: rgba(255,255,255,.35); transform: translateY(-6px); }

/* ==========================================================
   GIỚI THIỆU
   ========================================================== */
.about-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 80px; align-items: center; }
.about-photo { position: relative; padding: 0 0 30px 30px; }
.about-photo .frame {
  position: absolute; left: 0; bottom: 0; width: 62%; height: 72%;
  border: 3px solid var(--orange); z-index: 0;
}
.about-photo img {
  position: relative; z-index: 1; width: 100%; height: auto; aspect-ratio: 4/3.2; object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 86%, 88% 100%, 0 100%);
}
.about-badge {
  display: flex; align-items: center; gap: 20px; margin: 22px 0 0 30px; padding: 18px 24px;
  background: var(--navy); color: var(--white); border-left: 5px solid var(--orange); box-shadow: var(--shadow);
}
.about-badge strong { flex-shrink: 0; font-size: 22px; font-weight: 800; color: var(--orange); letter-spacing: .02em; line-height: 1.15; white-space: nowrap; }
.about-badge span { font-size: 14px; color: rgba(255,255,255,.85); line-height: 1.55; padding-left: 20px; border-left: 1px solid rgba(255,255,255,.2); }
.about-text p { color: var(--muted); font-size: 16.5px; }
.about-text .section-title { margin-bottom: 24px; }
/* Ba trụ triết lý: Sáng tạo – Tận tâm – Trường tồn */
.pillars { margin: 30px 0 36px; }
.pillar {
  position: relative; padding: 16px 0 16px 62px; border-top: 1px solid var(--line);
  transition: padding-left .3s;
}
.pillar:last-child { border-bottom: 1px solid var(--line); }
.pillar-no {
  position: absolute; left: 0; top: 14px; width: 42px; height: 42px; display: grid; place-items: center;
  font-size: 14px; font-weight: 800; color: var(--white); background: var(--navy);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%); transition: background .3s;
}
.pillar h4 { font-size: 17px; color: var(--navy-deep); }
.pillar p { margin: 5px 0 0; font-size: 14.5px; line-height: 1.6; color: var(--muted); }
.pillar:hover { padding-left: 70px; }
.pillar:hover .pillar-no { background: var(--orange); }

/* ==========================================================
   LĨNH VỰC HOẠT ĐỘNG — thẻ có ảnh công trình, mép chéo, icon cam
   ========================================================== */
.fields { background: var(--paper); overflow: hidden; }
.fields::before {
  content: ""; position: absolute; top: 0; right: 0; width: 40%; height: 100%;
  background: var(--white); clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%); opacity: .6;
}
.fields-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.field-card {
  position: relative; display: flex; flex-direction: column; background: var(--white); overflow: hidden;
  box-shadow: 0 16px 36px -26px rgba(7,35,63,.55); border-bottom: 4px solid transparent;
  transition: transform .45s cubic-bezier(.2,.75,.2,1), box-shadow .45s, background .45s, border-color .45s;
}
.field-media { position: relative; height: 220px; overflow: hidden; background: var(--navy-deep); }
.field-media img {
  width: 100%; height: 100%; object-fit: cover; filter: grayscale(.85) contrast(1.05);
  transition: transform 1s cubic-bezier(.2,.75,.2,1), filter .6s;
}
.field-media::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(7,35,63,.05) 30%, rgba(7,35,63,.75) 100%);
}
.field-media::after {
  /* mép chéo nối ảnh với thân thẻ */
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 44px; z-index: 2;
  background: var(--white); clip-path: polygon(0 100%, 100% 0, 100% 100%); transition: background .45s;
}
.field-num {
  position: absolute; left: 24px; top: 18px; z-index: 3; font-size: 50px; font-weight: 800; line-height: 1;
  color: transparent; -webkit-text-stroke: 1.6px rgba(255,255,255,.9); transition: color .45s, -webkit-text-stroke-color .45s;
}
.field-icon {
  position: absolute; right: 24px; bottom: 8px; z-index: 3; width: 60px; height: 60px;
  display: grid; place-items: center; background: var(--orange); color: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
  box-shadow: 0 12px 24px -10px rgba(245,128,37,.8); transition: transform .5s, background .45s, color .45s;
}
.field-icon svg { width: 30px; height: 30px; }
.field-body { position: relative; flex: 1; display: flex; flex-direction: column; padding: 22px 28px 30px; }
.field-card h3 { font-size: 19px; color: var(--navy-deep); transition: color .45s; min-height: 2.5em; }
.field-card p { margin: 12px 0 18px; font-size: 14.5px; color: var(--muted); line-height: 1.65; transition: color .45s; }
.field-card ul { list-style: none; margin: 0 0 24px; padding: 14px 0 0; font-size: 13.5px; border-top: 1px dashed var(--line); transition: border-color .45s; }
.field-card li { padding: 5px 0 5px 18px; position: relative; color: var(--charcoal); transition: color .45s; }
.field-card li::before { content: ""; position: absolute; left: 0; top: 13px; width: 7px; height: 7px; background: var(--orange); transform: rotate(45deg); }
.field-link {
  margin-top: auto; display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
  font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--navy);
  padding-bottom: 4px; border-bottom: 2px solid var(--orange); transition: color .45s, gap .25s;
}
.field-link svg { width: 16px; height: 16px; }
.field-card:hover { transform: translateY(-10px); background: var(--navy); border-color: var(--orange); box-shadow: 0 30px 50px -24px rgba(7,35,63,.7); }
.field-card:hover .field-media img { transform: scale(1.08); filter: none; }
.field-card:hover .field-media::after { background: var(--navy); }
.field-card:hover .field-num { color: var(--orange); -webkit-text-stroke-color: var(--orange); }
.field-card:hover .field-icon { background: var(--white); color: var(--orange); transform: rotate(-8deg); }
.field-card:hover h3, .field-card:hover li { color: var(--white); }
.field-card:hover p { color: rgba(255,255,255,.75); }
.field-card:hover ul { border-color: rgba(255,255,255,.2); }
.field-card:hover .field-link { color: var(--orange); gap: 14px; }


/* ==========================================================
   VÌ SAO CHỌN VICONS — nền navy + lưới bản vẽ
   ========================================================== */
.why { background: var(--navy-deep); color: var(--white); overflow: hidden; }
.why::before {
  content: ""; position: absolute; inset: 0; opacity: .07;
  background-image:
    linear-gradient(rgba(255,255,255,1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,1) 1px, transparent 1px);
  background-size: 60px 60px;
}
.why::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 260px; height: 260px;
  background: var(--orange); clip-path: polygon(0 30%, 0 100%, 70% 100%); opacity: .9;
}
.why .section-title { color: var(--white); }
.why .section-lead { color: rgba(255,255,255,.7); }
.why-layout { position: relative; z-index: 1; display: grid; grid-template-columns: .9fr 1.4fr; gap: 70px; align-items: start; }
.why-intro { position: sticky; top: 120px; }
.why-intro .btn { margin-top: 36px; }
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(255,255,255,.12); }
.why-item { background: var(--navy-deep); padding: 34px 30px; transition: background .3s; }
.why-item:hover { background: #0c2f52; }
.why-item .n { font-size: 13px; font-weight: 800; letter-spacing: .2em; color: var(--orange); }
.why-item h3 { font-size: 18px; margin: 12px 0 10px; }
.why-item p { margin: 0; font-size: 14.5px; color: rgba(255,255,255,.7); line-height: 1.65; }

/* ==========================================================
   QUY TRÌNH
   ========================================================== */
.process-track { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.process-track::before {
  content: ""; position: absolute; top: 34px; left: 8%; right: 8%; height: 2px;
  background: repeating-linear-gradient(90deg, var(--navy) 0 10px, transparent 10px 18px);
  opacity: .35;
}
.step { position: relative; text-align: center; }
.step-dot {
  position: relative; z-index: 1; width: 68px; height: 68px; margin: 0 auto 22px;
  display: grid; place-items: center; background: var(--white); color: var(--navy);
  border: 2px solid var(--navy); transform: rotate(45deg); transition: background .3s, border-color .3s;
}
.step-dot span { transform: rotate(-45deg); font-size: 20px; font-weight: 800; }
.step:hover .step-dot { background: var(--orange); border-color: var(--orange); color: var(--white); }
.step h3 { font-size: 16px; color: var(--navy-deep); }
.step p { margin: 8px 0 0; font-size: 13.5px; color: var(--muted); line-height: 1.6; }
.process-foot { margin-top: 56px; text-align: center; }

/* ==========================================================
   DỰ ÁN — lưới ảnh, bộ lọc, bấm mở thư viện ảnh
   ========================================================== */
.projects { background: var(--paper); }
.projects-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; margin-bottom: 40px; flex-wrap: wrap; }
.pj-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.pj-filters button {
  font: inherit; font-size: 13.5px; font-weight: 600; color: var(--charcoal); cursor: pointer;
  padding: 10px 18px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  transition: background .25s, color .25s, border-color .25s;
}
.pj-filters button:hover { border-color: var(--orange); color: var(--orange); }
.pj-filters button.active { background: var(--navy); border-color: var(--navy); color: var(--white); }

.pj-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 260px; gap: 18px; }
.pj-big { grid-column: span 2; grid-row: span 2; }
.pj-wide { grid-column: span 2; }
.pj-grid.filtered .pj-card { grid-column: span 2; grid-row: span 1; }
.pj-card.hide { display: none; }
.pj-card {
  position: relative; display: block; overflow: hidden; background: var(--navy-deep); cursor: zoom-in;
  box-shadow: 0 18px 36px -26px rgba(7,35,63,.6);
}
.pj-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s cubic-bezier(.2,.75,.2,1); }
.pj-card::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,35,63,0) 40%, rgba(7,35,63,.88) 100%); transition: opacity .4s;
}
.pj-card::before {
  content: ""; position: absolute; left: 0; bottom: 0; z-index: 3; height: 4px; width: 100%;
  background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .5s cubic-bezier(.2,.75,.2,1);
}
.pj-info { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; padding: 22px 24px; color: var(--white); transition: transform .45s; }
.pj-role {
  display: inline-block; background: var(--orange); color: var(--white); font-size: 11px; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; padding: 4px 10px;
}
.pj-info h3 { font-size: 19px; font-weight: 800; margin: 10px 0 4px; line-height: 1.3; }
.pj-big .pj-info { padding: 34px 36px; }
.pj-big .pj-info h3 { font-size: 30px; }
.pj-meta { margin: 0; font-size: 13.5px; color: rgba(255,255,255,.8); }
.pj-view {
  position: absolute; top: 16px; right: 16px; z-index: 2; display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 11px; font-size: 13px; font-weight: 700; color: var(--white);
  background: rgba(7,35,63,.72); backdrop-filter: blur(4px); opacity: 0; transform: translateY(-6px); transition: .35s;
}
.pj-view svg { width: 16px; height: 16px; color: var(--orange); }
.pj-card:hover img { transform: scale(1.07); }
.pj-card:hover::before { transform: scaleX(1); }
.pj-card:hover .pj-view { opacity: 1; transform: none; }
.pj-card:hover .pj-info { transform: translateY(-4px); }
.pj-card:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.projects-note {
  margin-top: 28px; padding: 20px 26px; background: var(--white); border-left: 4px solid var(--navy);
  display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
}
.projects-note p { margin: 0; color: var(--muted); font-size: 15px; }


/* ==========================================================
   TUYỂN DỤNG + HỒ SƠ NĂNG LỰC
   ========================================================== */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.duo-card { position: relative; overflow: hidden; min-height: 340px; padding: 50px 46px; color: var(--white); display: flex; flex-direction: column; justify-content: flex-end; }
.duo-card .bg { position: absolute; inset: 0; background-size: cover; background-position: center; filter: grayscale(1); transition: transform .8s; }
.duo-card:hover .bg { transform: scale(1.05); }
.duo-card .ov { position: absolute; inset: 0; }
.duo-card.career .ov { background: linear-gradient(120deg, rgba(15,76,129,.95) 30%, rgba(15,76,129,.55)); }
.duo-card.profile .ov { background: linear-gradient(120deg, rgba(38,52,61,.95) 30%, rgba(38,52,61,.55)); }
.duo-card.profile::after {
  content: ""; position: absolute; right: 0; top: 0; width: 140px; height: 140px;
  background: var(--orange); clip-path: polygon(0 0, 100% 0, 100% 100%);
}
.duo-card > *:not(.bg):not(.ov) { position: relative; z-index: 1; }
.duo-card h3 { font-size: 28px; font-weight: 800; margin: 12px 0 12px; }
.duo-card p { color: rgba(255,255,255,.8); max-width: 420px; }
.duo-card .btn { align-self: flex-start; margin-top: 12px; }

/* ==========================================================
   LIÊN HỆ
   ========================================================== */
.contact { padding-top: 0; }
.contact-box { display: grid; grid-template-columns: 1fr 1.25fr; box-shadow: var(--shadow); }
.contact-info {
  position: relative; overflow: hidden; background: var(--navy); color: var(--white); padding: 60px 50px;
}
.contact-info::after {
  content: ""; position: absolute; right: 0; bottom: 0; width: 180px; height: 180px;
  background: var(--orange); clip-path: polygon(100% 0, 100% 100%, 0 100%);
}
.contact-info .section-title { color: var(--white); font-size: clamp(26px, 2.8vw, 34px); }
.contact-info > p { color: rgba(255,255,255,.75); margin-top: 16px; }
.contact-list { list-style: none; padding: 0; margin: 36px 0 0; position: relative; z-index: 1; }
.contact-list li { display: flex; gap: 16px; padding: 16px 0; border-top: 1px solid rgba(255,255,255,.15); }
.contact-list li:first-child { border-top: 0; }
.contact-list .ic { width: 42px; height: 42px; flex-shrink: 0; display: grid; place-items: center; background: rgba(255,255,255,.1); color: var(--orange); }
.contact-list .ic svg { width: 20px; height: 20px; }
.contact-list small { display: block; font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase; color: rgba(255,255,255,.55); }
.contact-list strong { font-size: 17px; font-weight: 600; }
.contact-list a:hover strong { color: var(--orange); }

.contact-form { background: var(--white); padding: 60px 50px; }
.contact-form h3 { font-size: 22px; color: var(--navy-deep); margin-bottom: 8px; }
.contact-form > p { color: var(--muted); font-size: 15px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 26px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--charcoal); margin-bottom: 7px; }
.field label .req { color: var(--orange); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border: 1px solid var(--line); border-radius: var(--radius);
  font: inherit; font-size: 15px; color: var(--ink); background: #fbfcfd; transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(15,76,129,.12); background: var(--white);
}
.form-actions { margin-top: 24px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form-note { font-size: 13px; color: var(--muted); margin: 0; }
.form-msg { display: none; margin-top: 18px; padding: 14px 18px; background: #eef6ee; color: #1f6b2a; font-size: 14.5px; border-left: 3px solid #2f9e44; }
.form-msg.show { display: block; }

/* ==========================================================
   FOOTER
   ========================================================== */
.footer { background: var(--navy-deep); color: rgba(255,255,255,.7); font-size: 14.5px; position: relative; overflow: hidden; }
.footer::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--orange); }
.footer-main { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 50px; padding-top: 80px; padding-bottom: 56px; }
.footer-brand img { width: 150px; background: var(--white); padding: 14px; }
.footer-brand h4 { color: var(--white); font-size: 15px; letter-spacing: .06em; margin: 22px 0 12px; line-height: 1.5; }
.footer-brand p { font-size: 14px; line-height: 1.8; }
.footer h5 { color: var(--white); font-size: 13px; letter-spacing: .2em; text-transform: uppercase; margin: 0 0 22px; position: relative; padding-bottom: 12px; }
.footer h5::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--orange); }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { padding: 6px 0; }
.footer li a { transition: color .2s, padding .2s; }
.footer li a:hover { color: var(--orange); padding-left: 4px; }
.footer-legal li { display: flex; gap: 10px; }
.footer-legal li b { color: var(--white); font-weight: 600; min-width: 64px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0; font-size: 13px; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.tbd { color: var(--orange); font-style: italic; }

/* ---------- Nút gọi nổi ---------- */
.float-call {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 58px; height: 58px; border-radius: 50%; background: var(--orange); color: var(--white);
  display: grid; place-items: center; box-shadow: 0 10px 25px -8px rgba(245,128,37,.8);
}
.float-call svg { width: 24px; height: 24px; }
.float-call::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%; border: 2px solid var(--orange);
  animation: ring 2s infinite;
}
@keyframes ring { 0% { transform: scale(1); opacity: .8; } 100% { transform: scale(1.6); opacity: 0; } }
.to-top {
  position: fixed; right: 30px; bottom: 94px; z-index: 90; width: 42px; height: 42px;
  background: var(--navy); color: var(--white); border: 0; cursor: pointer; display: grid; place-items: center;
  opacity: 0; visibility: hidden; transition: .3s;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top svg { width: 18px; height: 18px; }


/* ---------- Thư viện ảnh dự án ---------- */
[hidden] { display: none !important; }
.lightbox {
  position: fixed; inset: 0; z-index: 300; display: flex; flex-direction: column;
  background: rgba(4, 18, 34, .96); color: var(--white); animation: lbIn .3s ease;
}
@keyframes lbIn { from { opacity: 0; } to { opacity: 1; } }
.lb-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 16px 24px; }
.lb-title strong { font-size: 18px; margin-right: 14px; }
.lb-title span { font-size: 14px; color: var(--orange); font-weight: 700; letter-spacing: .08em; }
.lb-close, .lb-nav {
  display: grid; place-items: center; border: 0; cursor: pointer; color: var(--white);
  background: rgba(255,255,255,.1); transition: background .25s;
}
.lb-close { width: 44px; height: 44px; }
.lb-close:hover, .lb-nav:hover { background: var(--orange); }
.lb-close svg { width: 22px; height: 22px; }
.lb-stage { position: relative; flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 0 90px; }
.lb-stage img { max-width: 100%; max-height: 100%; object-fit: contain; box-shadow: 0 30px 60px -20px rgba(0,0,0,.6); animation: lbImg .35s ease; }
@keyframes lbImg { from { opacity: 0; transform: scale(.98); } to { opacity: 1; transform: none; } }
.lb-nav { position: absolute; top: 50%; width: 54px; height: 54px; transform: translateY(-50%); }
.lb-nav svg { width: 26px; height: 26px; }
.lb-prev { left: 22px; } .lb-next { right: 22px; }
.lb-thumbs { display: flex; gap: 8px; padding: 16px 24px 22px; overflow-x: auto; justify-content: center; }
.lb-thumbs button { flex-shrink: 0; width: 86px; height: 60px; padding: 0; border: 2px solid transparent; cursor: pointer; background: none; opacity: .45; transition: opacity .2s, border-color .2s; }
.lb-thumbs button.active, .lb-thumbs button:hover { opacity: 1; }
.lb-thumbs button.active { border-color: var(--orange); }
.lb-thumbs img { width: 100%; height: 100%; object-fit: cover; }
body.lb-open { overflow: hidden; }

/* ---------- Hiệu ứng xuất hiện khi cuộn ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .1s; } .reveal.d2 { transition-delay: .2s; } .reveal.d3 { transition-delay: .3s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ==========================================================
   RESPONSIVE
   ========================================================== */
@media (max-width: 1100px) {
  .nav > a, .nav .has-sub > a { padding: 10px 10px; font-size: 14px; }
  .header-cta { display: none; }
  .pledges-grid { grid-template-columns: repeat(2, 1fr); }
  .fields-grid { grid-template-columns: repeat(2, 1fr); }
  .process-track { grid-template-columns: repeat(3, 1fr); row-gap: 44px; }
  .process-track::before { display: none; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .section { padding: 80px 0; }
  .topbar-info a.hide-sm { display: none; }
  .menu-toggle { display: flex; }
  .nav {
    position: fixed; top: 124px; left: 0; right: 0; bottom: 0; background: var(--white);
    flex-direction: column; align-items: stretch; gap: 0; padding: 16px 24px 40px; overflow-y: auto;
    transform: translateX(100%); transition: transform .35s;
  }
  .menu-open .nav { transform: none; }
  .nav > a, .nav .has-sub > a { padding: 16px 4px; font-size: 16px; border-bottom: 1px solid var(--line); }
  .nav > a::after, .nav .has-sub > a::after { display: none; }
  .submenu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 4px 0 8px 8px; min-width: 0; }
  .hero-panel { width: 100%; clip-path: polygon(0 0, 100% 0, 100% 78%, 0 100%); opacity: .93; }
  .hero-photo { inset: 0; }
  .hero-tri-navy, .hero-scroll { display: none; }
  .hero-tri-orange { width: 42vw; }
  .about-grid, .why-layout, .contact-box, .duo { grid-template-columns: 1fr; }
  .about-grid { gap: 60px; }
  .why-intro { position: static; }
  .projects-head { flex-direction: column; align-items: flex-start; }
  .pj-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 230px; }
  .pj-big { grid-column: span 2; grid-row: span 2; }
  .pj-wide { grid-column: span 1; }
  .pj-grid.filtered .pj-card { grid-column: span 1; }
  .lb-stage { padding: 0 12px; }
  .lb-nav { width: 44px; height: 44px; background: rgba(4,18,34,.7); }
  .lb-prev { left: 8px; } .lb-next { right: 8px; }
}
@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .topbar-info { gap: 16px; }
  .header .container { height: 72px; }
  .brand img { height: 50px; }
  .hero { min-height: 620px; }
  .hero-content { padding: 64px 0 130px; }
  .hero-sub { font-size: 16px; }
  .hero-company { display: none; }
  .pledges { margin-top: -60px; }
  .pledges-grid { grid-template-columns: 1fr; gap: 14px; }
  .pledge { padding: 26px 22px 24px; }
  .pledge p { max-width: none; }
  .pillar { padding-left: 56px; }
  .fields::before { display: none; }
  .about-photo { padding: 0 0 20px 20px; }
  .about-badge { margin-left: 0; flex-direction: column; align-items: flex-start; gap: 8px; }
  .about-badge span { padding-left: 0; border-left: 0; }
  .fields-grid, .why-grid, .process-track, .footer-main { grid-template-columns: 1fr; }
  .field-card h3 { min-height: 0; }
  .process-track { text-align: left; }
  .step { display: grid; grid-template-columns: 68px 1fr; gap: 0 22px; text-align: left; }
  .step-dot { margin: 0; grid-row: span 2; width: 54px; height: 54px; }
  .pj-grid { grid-template-columns: 1fr; grid-auto-rows: 250px; }
  .pj-big, .pj-wide, .pj-grid.filtered .pj-card { grid-column: span 1; grid-row: span 1; }
  .pj-big .pj-info { padding: 22px 24px; }
  .pj-big .pj-info h3 { font-size: 22px; }
  .pj-view { opacity: 1; transform: none; }
  .lb-thumbs { justify-content: flex-start; }
  .lb-thumbs button { width: 64px; height: 46px; }
  .duo-card { padding: 40px 26px; min-height: 300px; }
  .contact-info, .contact-form { padding: 44px 22px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-main { gap: 36px; padding-top: 60px; padding-bottom: 40px; }
}

/* ==========================================================
   THANH TIẾN TRÌNH + CỘT SỐ ĐIỀU HƯỚNG + CUỘN DÍNH MỀM
   ========================================================== */
.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 120; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--orange), #ffab5e);
  transition: width .12s linear;
}
.page-nav {
  position: fixed; right: 26px; top: 50%; transform: translateY(-50%); z-index: 95;
  display: flex; flex-direction: column; gap: 13px;
}
.page-nav button {
  position: relative; display: flex; align-items: center; justify-content: flex-end; gap: 10px;
  background: none; border: 0; padding: 2px 0; cursor: pointer;
  font: inherit; font-size: 12.5px; font-weight: 700; letter-spacing: .06em;
  color: var(--muted); transition: color .3s, transform .3s;
}
.page-nav button .lbl {
  max-width: 0; overflow: hidden; white-space: nowrap; opacity: 0;
  font-size: 12.5px; font-weight: 600; letter-spacing: 0; color: var(--navy-deep);
  transition: max-width .35s, opacity .3s;
}
.page-nav button::after { content: ""; width: 18px; height: 2px; background: currentColor; opacity: .45; transition: width .3s, opacity .3s; }
.page-nav button:hover { color: var(--navy); }
.page-nav button:hover .lbl { max-width: 190px; opacity: 1; }
.page-nav button.active { color: var(--orange); }
.page-nav button.active::after { width: 30px; opacity: 1; }
/* trên nền tối (hero, phần "vì sao chọn") đổi sang chữ sáng */
.page-nav.on-dark button { color: rgba(255,255,255,.6); }
.page-nav.on-dark button .lbl { color: var(--white); }
.page-nav.on-dark button:hover { color: var(--white); }
.page-nav.on-dark button.active { color: var(--orange); }

/* cuộn dính mềm: chỉ áp cho phần vừa một màn hình, phần dài vẫn cuộn tự do */
@media (min-width: 901px) {
  html.snap-on { scroll-snap-type: y proximity; }
  html.snap-on section.snap { scroll-snap-align: start; scroll-snap-stop: normal; }
}
@media (max-width: 1400px) { .page-nav button .lbl { display: none; } }
@media (max-width: 900px) { .page-nav { display: none; } }
@media (prefers-reduced-motion: reduce) { html.snap-on { scroll-snap-type: none; } }

/* ==========================================================
   TRANG CON — banner đầu trang
   ========================================================== */
.page-hero {
  position: relative; min-height: 420px; display: flex; align-items: center;
  background: var(--navy-deep); color: var(--white); overflow: hidden;
}
.page-hero .ph-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transform: scale(1.06); animation: phZoom 9s ease-out forwards;
}
@keyframes phZoom { to { transform: none; } }
.page-hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(7,35,63,.92) 0%, rgba(10,53,96,.72) 52%, rgba(7,35,63,.38) 100%);
}
.page-hero .container { position: relative; z-index: 2; padding-top: 70px; padding-bottom: 70px; }
.page-hero h1 { font-size: clamp(34px, 5vw, 62px); font-weight: 800; text-transform: uppercase; letter-spacing: .02em; }
.page-hero .crumb { margin-top: 14px; font-size: 14.5px; color: rgba(255,255,255,.75); }
.page-hero .crumb a:hover { color: var(--orange); }
.page-hero .crumb span { color: var(--orange); }
.page-hero .tri {
  position: absolute; right: 0; bottom: 0; width: 26vw; max-width: 340px; aspect-ratio: 1; z-index: 1;
  background: var(--orange); clip-path: polygon(100% 18%, 100% 100%, 18% 100%); opacity: .92;
}

/* ---------- Tầm nhìn & Sứ mệnh ---------- */
.vm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.vm-card {
  position: relative; padding: 40px 36px; background: var(--white); overflow: hidden;
  box-shadow: 0 18px 40px -26px rgba(7,35,63,.5); border-bottom: 3px solid transparent;
  transition: transform .4s, box-shadow .4s, border-color .4s;
}
.vm-card::after {
  content: ""; position: absolute; right: 0; top: 0; width: 64px; height: 64px;
  background: var(--paper); clip-path: polygon(0 0, 100% 0, 100% 100%); transition: background .4s;
}
.vm-card .ic {
  width: 58px; height: 58px; display: grid; place-items: center; margin-bottom: 22px;
  background: var(--navy); color: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%); transition: background .4s, transform .4s;
}
.vm-card .ic svg { width: 28px; height: 28px; }
.vm-card h3 { font-size: 22px; color: var(--navy-deep); }
.vm-card p { margin: 12px 0 0; color: var(--muted); font-size: 16px; }
.vm-card:hover { transform: translateY(-8px); border-color: var(--orange); box-shadow: 0 30px 50px -28px rgba(7,35,63,.6); }
.vm-card:hover::after { background: var(--orange); }
.vm-card:hover .ic { background: var(--orange); transform: rotate(-8deg); }

/* ---------- Vòng tròn triết lý (nền tối) ---------- */
.philo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.philo-circle { position: relative; width: min(440px, 100%); aspect-ratio: 1; margin: 0 auto; color: var(--white); }
.philo-circle .ring { position: absolute; inset: 12%; border: 1px dashed rgba(255,255,255,.34); border-radius: 50%; animation: philoSpin 60s linear infinite; }
@keyframes philoSpin { to { transform: rotate(360deg); } }
.philo-core, .philo-node { position: absolute; display: grid; place-items: center; text-align: center; }
.philo-core {
  left: 50%; top: 50%; transform: translate(-50%, -50%); width: 42%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #1a6bb0, var(--navy-dark) 70%);
  border: 2px solid rgba(245,128,37,.6); box-shadow: 0 0 60px -12px rgba(245,128,37,.55);
}
.philo-core strong { display: block; font-size: clamp(18px, 1.8vw, 24px); font-weight: 800; letter-spacing: .1em; }
.philo-core span { font-size: 10.5px; letter-spacing: .24em; color: var(--orange); text-transform: uppercase; }
.philo-node {
  width: 30%; aspect-ratio: 1; border-radius: 50%; background: var(--orange); padding: 8px;
  box-shadow: 0 16px 34px -14px rgba(0,0,0,.6); transition: transform .35s, background .35s, color .35s;
}
.philo-node b { display: block; font-size: clamp(12px, 1.05vw, 15px); font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.philo-node i { display: block; font-style: normal; font-size: 11.5px; opacity: .9; margin-top: 2px; }
.philo-node:hover { background: var(--white); color: var(--navy-deep); transform: scale(1.06); }
.philo-node.p1 { left: 50%; top: 0; transform: translateX(-50%); }
.philo-node.p1:hover { transform: translateX(-50%) scale(1.06); }
.philo-node.p2 { left: 3%; bottom: 7%; }
.philo-node.p3 { right: 3%; bottom: 7%; }
.philo-list { display: grid; gap: 20px; margin-top: 26px; }
.philo-item { padding-left: 22px; border-left: 3px solid var(--orange); }
.philo-item h4 { font-size: 18px; color: var(--white); }
.philo-item p { margin: 6px 0 0; color: rgba(255,255,255,.75); font-size: 15px; }

/* ---------- Đội ngũ 4 bộ phận ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.team-card {
  padding: 32px 26px; background: var(--white); border-top: 3px solid var(--orange);
  box-shadow: 0 16px 36px -28px rgba(7,35,63,.5); transition: transform .4s, background .4s, box-shadow .4s;
}
.team-card .ic { width: 50px; height: 50px; display: grid; place-items: center; margin-bottom: 18px; background: var(--paper); color: var(--orange); transition: background .4s; }
.team-card .ic svg { width: 26px; height: 26px; }
.team-card h3 { font-size: 17.5px; color: var(--navy-deep); transition: color .4s; }
.team-card p { margin: 10px 0 0; font-size: 14.5px; color: var(--muted); line-height: 1.6; transition: color .4s; }
.team-card:hover { transform: translateY(-8px); background: var(--navy); box-shadow: var(--shadow); }
.team-card:hover h3 { color: var(--white); }
.team-card:hover p { color: rgba(255,255,255,.75); }
.team-card:hover .ic { background: rgba(255,255,255,.12); }

/* ---------- Dải kêu gọi hành động cuối trang con ---------- */
.cta-band { position: relative; background: var(--navy); color: var(--white); overflow: hidden; }
.cta-band::after {
  content: ""; position: absolute; right: 0; top: 0; width: 320px; height: 100%;
  background: var(--orange); clip-path: polygon(38% 0, 100% 0, 100% 100%, 0 100%); opacity: .92;
}
.cta-band .container { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; padding-top: 56px; padding-bottom: 56px; }
.cta-band h2 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 800; }
.cta-band p { margin: 10px 0 0; color: rgba(255,255,255,.8); max-width: 560px; }

@media (max-width: 1100px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .page-hero { min-height: 320px; }
  .vm-grid, .philo-grid { grid-template-columns: 1fr; gap: 34px; }
  .cta-band::after { display: none; }
}
@media (max-width: 600px) {
  .team-grid { grid-template-columns: 1fr; }
  .vm-card { padding: 30px 24px; }
  .philo-circle { width: min(320px, 86vw); }
}

/* câu chủ đề in nghiêng dưới tiêu đề Giới thiệu */
.about-note {
  font-size: 17.5px; font-style: italic; color: var(--navy) !important;
  border-left: 3px solid var(--orange); padding-left: 16px; margin-bottom: 20px;
}

/* ---------- Thông tin liên hệ trên thanh menu ---------- */
.topbar-addr { display: inline-flex; align-items: center; gap: 8px; }
.topbar-addr svg { width: 14px; height: 14px; color: var(--orange); }
.header-side { display: flex; align-items: center; gap: 22px; flex-shrink: 0; }
.header-contact { display: flex; align-items: center; gap: 18px; }
.header-contact a { display: inline-flex; align-items: center; gap: 10px; transition: color .2s; }
.header-contact .ic {
  width: 36px; height: 36px; flex-shrink: 0; display: grid; place-items: center;
  background: var(--paper); color: var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%); transition: background .25s, color .25s;
}
.header-contact .ic svg { width: 17px; height: 17px; }
.header-contact small { display: block; font-size: 10px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.header-contact b { display: block; font-size: 14px; font-weight: 700; color: var(--navy-deep); line-height: 1.3; }
.header-contact a:hover .ic { background: var(--orange); color: var(--white); }
.header-contact a:hover b { color: var(--orange); }
@media (max-width: 1450px) { .header-contact .hide-lg { display: none; } }
@media (max-width: 1240px) { .header-contact { display: none; } }
@media (max-width: 1000px) { .topbar-addr.hide-md { display: none; } }
.header .container { max-width: 1460px; }
.topbar .container { max-width: 1460px; }
.nav > a, .nav .has-sub > a { white-space: nowrap; }

/* ==========================================================
   HERO BẢN CÂN GIỮA (ảnh ghép công trình + logo lớn)
   ========================================================== */
.hero-photo.montage {
  inset: 0;
  background-image: url("../assets/img/hero-montage.jpg");
  filter: none;
}
.hero-photo.montage::after { background: linear-gradient(180deg, rgba(7,35,63,.45), rgba(7,35,63,.15) 40%, rgba(7,35,63,.65)); }
.hero.center .hero-panel, .hero.center .hero-tri-navy { display: none; }
.hero.center .hero-content { max-width: 940px; margin: 0 auto; text-align: center; padding: 80px 0 120px; }
.hero.center .hero-logo {
  width: clamp(180px, 20vw, 290px); height: auto; margin: 0 auto 26px;
  filter: drop-shadow(0 18px 34px rgba(0,0,0,.45));
}
.hero.center .eyebrow { justify-content: center; }
.hero.center .eyebrow::after { content: ""; width: 36px; height: 3px; background: var(--orange); }
.hero.center .hero-rule { margin: 20px auto 0; }
.hero.center .hero-sub { margin-left: auto; margin-right: auto; max-width: 720px; font-size: clamp(16px, 1.4vw, 19px); }
.hero.center .hero-actions { justify-content: center; }
.hero.center .hero-company { left: 50%; transform: translateX(-50%); bottom: 28px; }
.hero.center .hero-scroll { display: none; }

/* ==========================================================
   BĂNG CHUYỀN CÔNG TRÌNH
   ========================================================== */
.belt { background: var(--navy-deep); padding: 16px 0; overflow: hidden; position: relative; }
.belt::before, .belt::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 120px; z-index: 2; pointer-events: none;
}
.belt::before { left: 0; background: linear-gradient(90deg, var(--navy-deep), transparent); }
.belt::after { right: 0; background: linear-gradient(270deg, var(--navy-deep), transparent); }
.belt-track { display: flex; gap: 16px; width: max-content; animation: beltMove 60s linear infinite; }
.belt:hover .belt-track { animation-play-state: paused; }
@keyframes beltMove { to { transform: translateX(-50%); } }
.belt-item {
  position: relative; flex-shrink: 0; width: 280px; height: 160px; overflow: hidden;
  border-bottom: 3px solid transparent; transition: border-color .3s;
}
.belt-item img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(.55); transition: filter .5s, transform .8s; }
.belt-item::after { content: ""; position: absolute; inset: 0; background: linear-gradient(transparent 45%, rgba(7,35,63,.9)); }
.belt-item span {
  position: absolute; left: 16px; right: 16px; bottom: 12px; z-index: 1;
  color: var(--white); font-size: 14px; font-weight: 700; line-height: 1.3;
}
.belt-item:hover { border-color: var(--orange); }
.belt-item:hover img { filter: none; transform: scale(1.06); }
@media (max-width: 600px) {
  .belt-item { width: 210px; height: 125px; }
  .belt-item span { font-size: 12.5px; }
}
@media (prefers-reduced-motion: reduce) { .belt-track { animation: none; } }

/* ==========================================================
   THANH MENU NỀN NAVY (bản sang trọng)
   ========================================================== */
.topbar { background: #05192e; }
.header {
  background: linear-gradient(180deg, #0b3a66 0%, var(--navy-deep) 100%);
  border-bottom: 2px solid var(--orange);
}
.header.scrolled { box-shadow: 0 12px 34px -16px rgba(0,0,0,.6); }
.nav > a, .nav .has-sub > a { color: rgba(255,255,255,.88); }
.nav > a:hover, .nav .has-sub:hover > a, .nav a.active { color: var(--white); }
.nav a.active { color: var(--orange); }
.submenu { background: var(--navy-deep); border-top-color: var(--orange); }
.submenu a { color: rgba(255,255,255,.85); }
.submenu a:hover { background: rgba(255,255,255,.08); color: var(--white); }
.header-contact .ic { background: rgba(255,255,255,.12); color: var(--orange); }
.header-contact small { color: rgba(255,255,255,.55); }
.header-contact b { color: var(--white); }
.header-contact a:hover .ic { background: var(--orange); color: var(--white); }
.header-contact a:hover b { color: var(--orange); }
.menu-toggle { background: transparent; border-color: rgba(255,255,255,.35); }
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after { background: var(--white); }
.menu-open .menu-toggle span { background: transparent; }
@media (max-width: 900px) {
  .nav { background: var(--navy-deep); }
  .nav > a, .nav .has-sub > a { border-bottom-color: rgba(255,255,255,.12); }
}

/* ==========================================================
   HERO — ảnh lớn tự chuyển (3 giây/ảnh)
   ========================================================== */
.hero-slides { position: absolute; inset: 0; overflow: hidden; }
.hero-slide {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0; transform: scale(1.06);
  transition: opacity .7s ease, transform 5s ease-out;
}
.hero-slide.on { opacity: 1; transform: scale(1); }
.hero-slides::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,35,63,.72) 0%, rgba(7,35,63,.5) 45%, rgba(7,35,63,.82) 100%);
}
.hero.center .hero-logo { width: clamp(120px, 12vw, 172px); margin-bottom: 20px; }
.hero.center .hero-title { font-size: clamp(24px, 3.2vw, 44px); margin-top: 14px; }
.hero.center .hero-title .line { white-space: nowrap; }
.hero.center .hero-sub { margin-top: 20px; font-size: clamp(15px, 1.25vw, 18px); }
.hero.center .hero-content { padding: 70px 0 110px; }

/* tên công trình đang hiển thị + chấm chuyển ảnh */
.hero-name {
  position: absolute; left: 50%; transform: translateX(-50%); bottom: 74px; z-index: 3;
  font-size: 12.5px; letter-spacing: .22em; text-transform: uppercase; color: rgba(255,255,255,.75);
  transition: opacity .4s; text-align: center; padding: 0 20px;
}
.hero-name b { color: var(--orange); font-weight: 700; }
.hero-dots { position: absolute; left: 50%; transform: translateX(-50%); bottom: 36px; z-index: 3; display: flex; gap: 10px; }
.hero-dots button {
  width: 30px; height: 4px; padding: 0; border: 0; cursor: pointer;
  background: rgba(255,255,255,.35); transition: background .3s, width .3s;
}
.hero-dots button:hover { background: rgba(255,255,255,.7); }
.hero-dots button.active { background: var(--orange); width: 46px; }
@media (max-width: 600px) {
  .hero.center .hero-title { font-size: clamp(19px, 5.4vw, 26px); }
  .hero.center .hero-logo { width: 110px; }
  .hero-name { bottom: 66px; font-size: 11px; }
  .hero-dots button { width: 20px; }
  .hero-dots button.active { width: 32px; }
}
/* điện thoại: cho xuống dòng giữa các cụm, nhưng mỗi cụm không bị tách đôi */
@media (max-width: 900px) {
  .hero.center .hero-title .line { white-space: normal; }
  .hero.center .hero-title { font-size: clamp(20px, 6vw, 30px); line-height: 1.3; }
}

/* ==========================================================
   HERO — đồng bộ một gam trắng + chế độ xem ảnh công trình
   ========================================================== */
/* 1. Mọi chữ trong hero dùng chung màu trắng #fff, bỏ hiệu ứng vệt sáng làm chữ đậm nhạt */
.hero.center .hero-title .wi:not(.sep) {
  background: none; -webkit-text-fill-color: #fff; color: #fff;
  padding-top: .3em; margin-top: -.3em; animation: none !important;
}
.hero.center .hero-sub { color: #fff; }
.hero.center .hero-name { color: #fff; }
.hero.center .hero-company { color: #fff; }

/* 2. Khi chuyển sang ảnh công trình: chữ ẩn đi, logo mờ lại, ảnh rõ 100% */
.hero-slides::after { transition: opacity .7s ease; }
.hero.showcase .hero-slides::after { opacity: 0; }
.hero-content .eyebrow, .hero-title, .hero-rule, .hero-sub {
  transition: opacity .6s ease, visibility .6s;
}
.hero.showcase .hero-content .eyebrow,
.hero.showcase .hero-title,
.hero.showcase .hero-rule,
.hero.showcase .hero-sub { opacity: 0; visibility: hidden; }
.hero.center .hero-logo { transition: opacity .6s ease, filter .6s ease; }
.hero.showcase .hero-logo { opacity: .3; filter: drop-shadow(0 10px 22px rgba(0,0,0,.5)); }
/* vệt tối mỏng dưới đáy để tên công trình và dải chấm luôn đọc được */
.hero-slides::before {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 240px; z-index: 1;
  background: linear-gradient(transparent, rgba(7,35,63,.82));
}
.hero.showcase .hero-name { color: #fff; }

/* ==========================================================
   HIỆU ỨNG CHUYỂN MỤC — mỗi khối vào theo một hướng riêng
   ========================================================== */
html { scroll-padding-top: 110px; }
.reveal {
  transition: opacity .9s cubic-bezier(.22,.7,.2,1), transform 1s cubic-bezier(.22,.7,.2,1), clip-path 1s cubic-bezier(.22,.7,.2,1);
  will-change: opacity, transform;
}
.reveal.in { transform: none !important; clip-path: none !important; }

/* Giới thiệu: ảnh trượt từ trái, chữ trượt từ phải */
.about-media.reveal { transform: translateX(-52px); }
.about-text.reveal { transform: translateX(52px); }
/* Ba trụ triết lý: lần lượt trượt từ trái */
.pillar { opacity: 0; transform: translateX(-26px); transition: opacity .7s ease, transform .7s cubic-bezier(.22,.7,.2,1); }
.about-text.in .pillar { opacity: 1; transform: none; }
.about-text.in .pillar:nth-child(1) { transition-delay: .25s; }
.about-text.in .pillar:nth-child(2) { transition-delay: .4s; }
.about-text.in .pillar:nth-child(3) { transition-delay: .55s; }

/* Tiêu đề mục: hạ xuống từ trên */
.section-head.reveal { transform: translateY(-26px); }

/* Thẻ lĩnh vực: trồi lên kèm phóng nhẹ */
.field-card.reveal { transform: translateY(46px) scale(.96); }

/* Vì sao chọn VICONS: cột trái vào từ trái, các ô so le trái/phải */
.why-intro.reveal { transform: translateX(-48px); }
.why-item.reveal { transform: translateX(44px); }
.why-grid .why-item.reveal:nth-child(2n) { transform: translateX(-44px); }

/* Quy trình: từng bước bật lên */
.step.reveal { transform: translateY(48px) scale(.95); }

/* Dự án: thẻ hiện dần theo kiểu mở khung từ dưới lên */
.projects-head.reveal { transform: translateY(-24px); }
.pj-card.reveal { transform: scale(.94); clip-path: inset(12% 0 0 0); }
.projects-note.reveal { transform: translateY(34px); }

/* Tuyển dụng & hồ sơ năng lực: hai thẻ tách ra hai bên */
.duo-card.career.reveal { transform: translateX(-56px); }
.duo-card.profile.reveal { transform: translateX(56px); }

/* Liên hệ: khối nổi lên */
.contact-box.reveal { transform: translateY(54px) scale(.985); }

/* Trang Giới thiệu */
.vm-card.reveal { transform: translateY(44px) scale(.96); }
.vm-grid .vm-card.reveal:first-child { transform: translateX(-48px); }
.vm-grid .vm-card.reveal:last-child { transform: translateX(48px); }
.philo-circle.reveal { transform: scale(.88) rotate(-5deg); }
.team-card.reveal { transform: translateY(44px) scale(.96); }
.page-hero .container { animation: heroIn 1s cubic-bezier(.22,.7,.2,1) both; }
@keyframes heroIn { from { opacity: 0; transform: translateY(28px); } }

@media (prefers-reduced-motion: reduce) {
  .reveal, .pillar { transition: none; opacity: 1; transform: none; clip-path: none; }
  .page-hero .container { animation: none; }
}

/* ==========================================================
   THANH TRÊN CÙNG KIỂU MỚI — ngôn ngữ · logo giữa · nút mục lục
   ========================================================== */
.topbar, .header { display: none !important; }   /* bỏ hẳn thanh menu ngang cũ */

.topnav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 120; height: 104px;
  display: flex; align-items: center; justify-content: space-between; padding: 0 34px;
  transition: background .45s ease, height .45s ease, box-shadow .45s;
}
.topnav::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(rgba(5,25,46,.82), rgba(5,25,46,0));
  transition: opacity .45s;
}
body.nav-solid .topnav { height: 84px; background: rgba(5,25,46,.95); box-shadow: 0 10px 30px -18px rgba(0,0,0,.8); }
body.nav-solid .topnav::before { opacity: 0; }

.topnav-logo { position: absolute; left: 50%; transform: translateX(-50%); display: block; }
.topnav-logo img { height: 84px; width: auto; transition: height .45s ease, filter .3s; }
body.nav-solid .topnav-logo img { height: 64px; }
.topnav-logo:hover img { filter: drop-shadow(0 8px 18px rgba(245,128,37,.55)); }

.topnav .lang-switch { gap: 2px; align-items: center; }
.topnav .lang-switch .sep { color: rgba(255,255,255,.4); }
.topnav .lang-switch button {
  background: none; border: 0; padding: 4px 6px; cursor: pointer;
  font: inherit; font-size: 13px; font-weight: 700; letter-spacing: .12em; color: rgba(255,255,255,.65);
  transition: color .25s;
}
.topnav .lang-switch button:hover { color: #fff; }
.topnav .lang-switch button.active { color: #fff; border-bottom: 2px solid var(--orange); background: none; }

.burger {
  width: 46px; height: 46px; display: grid; align-content: center; justify-items: end; gap: 6px;
  background: none; border: 0; cursor: pointer; padding: 0;
}
.burger span { display: block; height: 2px; background: #fff; transition: transform .35s, opacity .25s, width .35s; }
.burger span:nth-child(1) { width: 30px; }
.burger span:nth-child(2) { width: 22px; }
.burger span:nth-child(3) { width: 30px; }
.burger:hover span { width: 30px; background: var(--orange); }
body.menu-open .burger span:nth-child(1) { width: 30px; transform: translateY(8px) rotate(45deg); }
body.menu-open .burger span:nth-child(2) { opacity: 0; }
body.menu-open .burger span:nth-child(3) { width: 30px; transform: translateY(-8px) rotate(-45deg); }

/* ---------- Mục lục phủ màn hình ---------- */
.site-menu {
  position: fixed; inset: 0; z-index: 110; background: rgba(5,25,46,.97);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  opacity: 0; visibility: hidden; transition: opacity .4s ease, visibility .4s;
}
.site-menu::after {
  content: ""; position: absolute; right: 0; bottom: 0; width: 34vw; max-width: 420px; aspect-ratio: 1;
  background: var(--orange); clip-path: polygon(100% 18%, 100% 100%, 18% 100%); opacity: .16;
}
body.menu-open .site-menu { opacity: 1; visibility: visible; }
body.menu-open { overflow: hidden; }
.site-menu nav { position: relative; z-index: 1; text-align: center; }
.site-menu nav a {
  display: block; padding: 12px 0; color: #fff; font-size: clamp(22px, 3vw, 36px); font-weight: 800;
  text-transform: uppercase; letter-spacing: .02em; opacity: 0; transform: translateY(20px);
  transition: opacity .5s, transform .5s, color .25s;
}
body.menu-open .site-menu nav a { opacity: 1; transform: none; }
body.menu-open .site-menu nav a:nth-child(1) { transition-delay: .08s; }
body.menu-open .site-menu nav a:nth-child(2) { transition-delay: .14s; }
body.menu-open .site-menu nav a:nth-child(3) { transition-delay: .2s; }
body.menu-open .site-menu nav a:nth-child(4) { transition-delay: .26s; }
body.menu-open .site-menu nav a:nth-child(5) { transition-delay: .32s; }
body.menu-open .site-menu nav a:nth-child(6) { transition-delay: .38s; }
.site-menu nav a:hover { color: var(--orange); }
.site-menu-foot { position: relative; z-index: 1; margin-top: 30px; color: rgba(255,255,255,.65); font-size: 15px; display: flex; gap: 12px; }
.site-menu-foot a:hover { color: var(--orange); }

/* ---------- Hero: chừa chỗ cho thanh trên cùng + decor góc xéo ---------- */
.hero.center .hero-content { padding: 150px 0 120px; }
.hero-decor { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.hero-decor .d-navy {
  position: absolute; left: 0; top: 0; width: 26vw; max-width: 380px; height: 100%;
  background: linear-gradient(160deg, rgba(15,76,129,.92), rgba(7,35,63,.6));
  clip-path: polygon(0 0, 62% 0, 100% 100%, 0 100%);
}
.hero-decor .d-orange {
  position: absolute; left: 0; bottom: 0; width: 18vw; max-width: 260px; aspect-ratio: 1;
  background: var(--orange); clip-path: polygon(0 32%, 0 100%, 68% 100%); opacity: .95;
}
.hero-decor .d-line {
  position: absolute; right: 0; top: 0; width: 22vw; max-width: 320px; height: 100%;
  background: linear-gradient(200deg, rgba(245,128,37,.85) 0 42%, transparent 42%);
  clip-path: polygon(38% 0, 100% 0, 100% 42%, 62% 42%);
  opacity: .9;
}
html { scroll-padding-top: 116px; }

@media (max-width: 900px) {
  .topnav { height: 82px; padding: 0 16px; }
  body.nav-solid .topnav { height: 68px; }
  .topnav-logo img { height: 62px; }
  body.nav-solid .topnav-logo img { height: 50px; }
  .hero.center .hero-content { padding: 120px 0 110px; }
  .hero-decor .d-navy { width: 34vw; }
  .hero-decor .d-orange { width: 30vw; }
  .hero-decor .d-line { display: none; }
  html { scroll-padding-top: 88px; }
}
/* hero chiếm trọn màn hình vì thanh trên cùng nay nằm đè lên ảnh */
.hero.center { min-height: 100vh; min-height: 100svh; }
/* khi chuyển sang ảnh công trình: decor cũng mờ đi để ảnh sạch hoàn toàn */
.hero-decor span { transition: opacity .7s ease; }
.hero.showcase .hero-decor span { opacity: 0; }
/* góc xéo cam bên phải nhỏ lại cho thanh thoát */
.hero-decor .d-line { width: 15vw; max-width: 220px; }

/* ---- Tinh chỉnh decor góc xéo: mảnh và sang hơn, đúng tinh thần hồ sơ năng lực ---- */
.hero-decor .d-navy {
  width: 19vw; max-width: 270px;
  background: linear-gradient(165deg, rgba(15,76,129,.78), rgba(7,35,63,.34));
  clip-path: polygon(0 0, 54% 0, 100% 100%, 0 100%);
}
.hero-decor .d-orange {
  width: 13vw; max-width: 180px;
  clip-path: polygon(0 46%, 0 100%, 74% 100%); opacity: .92;
}
.hero-decor .d-line {
  width: 16vw; max-width: 230px; height: 46%;
  background: linear-gradient(205deg, rgba(245,128,37,.9) 0 52%, transparent 52%);
  clip-path: polygon(30% 0, 100% 0, 100% 62%, 58% 62%);
  opacity: .92;
}
@media (max-width: 900px) {
  .hero-decor .d-navy { width: 30vw; }
  .hero-decor .d-orange { width: 24vw; }
}

/* ==========================================================
   Thanh trên cùng KHÔNG tô màu khi cuộn — màn hình luôn thoáng
   Đổi sang logo/chữ màu đậm để vẫn đọc rõ trên nền sáng
   ========================================================== */
body.nav-solid .topnav { background: transparent; box-shadow: none; }
.topnav-logo { line-height: 0; }
.topnav-logo img { display: block; }
.topnav-logo .lg-dark { position: absolute; left: 0; top: 0; opacity: 0; }
body.nav-solid .topnav-logo .lg-light { opacity: 0; }
body.nav-solid .topnav-logo .lg-dark { opacity: 1; }
.topnav-logo .lg-light, .topnav-logo .lg-dark { transition: opacity .35s ease, height .45s ease; }
/* logo đậm cần một lớp sáng mờ phía sau để nổi trên ảnh tối lúc chưa cuộn — dùng bóng trắng nhẹ */
body.nav-solid .topnav-logo .lg-dark { filter: drop-shadow(0 2px 10px rgba(255,255,255,.65)); }
body.nav-solid .topnav .lang-switch .sep { color: rgba(5,25,46,.35); }
body.nav-solid .topnav .lang-switch button { color: rgba(5,25,46,.6); }
body.nav-solid .topnav .lang-switch button:hover,
body.nav-solid .topnav .lang-switch button.active { color: var(--navy, #0f4c81); }
body.nav-solid .burger span { background: var(--navy, #0f4c81); }
body.nav-solid .burger:hover span { background: var(--orange); }
/* khi mở mục lục thì nền tối => trả lại logo/chữ trắng */
body.menu-open .topnav-logo .lg-light { opacity: 1; }
body.menu-open .topnav-logo .lg-dark { opacity: 0; }
body.menu-open .burger span { background: #fff; }
body.menu-open .topnav .lang-switch button { color: rgba(255,255,255,.7); }
body.menu-open .topnav .lang-switch button.active { color: #fff; }
/* logo nhỏ hơn khi cuộn để không che nội dung phía dưới */
body.nav-solid .topnav { height: 76px; }
body.nav-solid .topnav-logo img { height: 56px; }
@media (max-width: 900px) {
  body.nav-solid .topnav { height: 62px; }
  body.nav-solid .topnav-logo img { height: 46px; }
}

/* ==========================================================
   TRANG CHỦ · KHỐI THÔNG ĐIỆP / GIỚI THIỆU — trọn một màn hình
   Nền: bản vẽ kỹ thuật nhấn chìm · Trái: nội dung · Phải: giấy tiêu đề + công trình
   ========================================================== */
.reveal.d4 { transition-delay: .4s; }
.reveal.d5 { transition-delay: .52s; }

.about-screen {
  position: relative; overflow: hidden; background: var(--white, #fff);
  min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center;
  padding: 120px 0 72px;
}
.about-bg {
  position: absolute; inset: 0;
  background: url('../assets/img/about-blueprint.jpg') center/cover no-repeat;
  opacity: .16; filter: grayscale(.25) contrast(1.04);
}
.about-bg::after {                       /* làm mờ dần ra 4 phía để ảnh "chìm" hẳn vào nền */
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(to right, #fff 0%, rgba(255,255,255,0) 26%, rgba(255,255,255,0) 74%, #fff 100%),
    linear-gradient(to bottom, #fff 0%, rgba(255,255,255,.1) 24%, rgba(255,255,255,.1) 72%, #fff 100%);
}
.about-screen-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center;
}

/* ---- nội dung bên trái ---- */
.about-copy .section-title { margin: 6px 0 16px; }
.about-copy .about-note {
  margin: 0 0 16px; padding-left: 16px; border-left: 3px solid var(--orange);
  font-style: italic; font-weight: 600; color: var(--navy, #0f4c81); font-size: 1.06rem; line-height: 1.6;
}
.about-copy .about-lead { margin: 0 0 20px; color: #46525f; line-height: 1.78; }
.about-mini { list-style: none; margin: 0 0 24px; padding: 0; display: grid; gap: 10px; }
.about-mini li {
  position: relative; padding-left: 22px; line-height: 1.6; color: #46525f; font-size: .97rem;
}
.about-mini li::before {
  content: ''; position: absolute; left: 0; top: .62em;
  width: 10px; height: 2px; background: var(--orange);
}
.about-mini b { color: var(--navy-deep, #05192e); }
.about-mini b::after { content: ' — '; color: #9aa6b2; font-weight: 400; }
.about-cta { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---- hình bên phải: giấy tiêu đề trên, công trình dưới ---- */
.about-visual { display: grid; gap: 18px; }
.about-visual figure { margin: 0; position: relative; overflow: hidden; border-radius: 2px; }
.about-visual img { display: block; width: 100%; height: 100%; object-fit: cover; }
.av-letter img { aspect-ratio: 16 / 7.4; object-position: 32% 50%; }
.av-letter { box-shadow: 0 18px 44px -26px rgba(5,25,46,.45); }
.av-crane img { aspect-ratio: 16 / 10.6; object-position: 50% 52%; }
.av-crane { box-shadow: 0 24px 60px -30px rgba(5,25,46,.55); }
.av-corner {            /* nêm cam góc dưới phải cho đồng bộ nhận diện */
  position: absolute; right: 0; bottom: 0; width: 86px; height: 86px;
  background: var(--orange); clip-path: polygon(100% 22%, 100% 100%, 22% 100%); opacity: .95;
}

/* ---- hiệu ứng: nội dung chạy từ trái, hình chạy từ trên xuống ---- */
.reveal.rv-left { transform: translateX(-56px); }
.reveal.rv-top  { transform: translateY(-64px); }

/* ---- màn hình thấp / laptop nhỏ: co lại cho vẫn trọn 1 màn hình ---- */
@media (max-height: 820px) and (min-width: 901px) {
  .about-screen { padding: 104px 0 56px; }
  .about-screen-grid { gap: 44px; }
  .about-copy .section-title { font-size: clamp(1.5rem, 2.1vw, 2rem); }
  .about-copy .about-note { font-size: 1rem; margin-bottom: 12px; }
  .about-copy .about-lead { font-size: .94rem; line-height: 1.7; margin-bottom: 14px; }
  .about-mini { gap: 7px; margin-bottom: 18px; }
  .about-mini li { font-size: .9rem; }
  .about-visual { gap: 14px; }
  .av-letter img { aspect-ratio: 16 / 6.4; }
  .av-crane img { aspect-ratio: 16 / 9.4; }
}
@media (max-width: 900px) {
  .about-screen { min-height: 0; padding: 92px 0 56px; }
  .about-screen-grid { grid-template-columns: 1fr; gap: 28px; }
  .about-visual { order: 2; }
  .about-copy { order: 1; }
  .reveal.rv-left { transform: translateY(36px); }
  .av-corner { width: 60px; height: 60px; }
}

/* ==========================================================
   TRANG GIỚI THIỆU — mỗi mục trọn một màn hình, cuộn mượt
   ========================================================== */
.screen {
  position: relative; overflow: hidden;
  min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center;
  padding: 122px 0 74px;
  background: var(--white);
  scroll-snap-align: start;
}
.screen > .container { position: relative; z-index: 2; width: 100%; }
.scr-bg { position: absolute; inset: 0; background-position: center; background-size: cover; background-repeat: no-repeat; }
.scr-bg.blueprint { background-image: url('../assets/img/about-blueprint.jpg'); opacity: .17; filter: grayscale(.25) contrast(1.04); }
.scr-bg.blueprint.faint { opacity: .12; }
.scr-bg.blueprint::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(to right, #fff 0%, rgba(255,255,255,0) 24%, rgba(255,255,255,0) 76%, #fff 100%),
    linear-gradient(to bottom, #fff 0%, rgba(255,255,255,.08) 22%, rgba(255,255,255,.08) 74%, #fff 100%);
}
/* màn hình nền tối */
.screen[data-dark] { background: var(--navy-deep); color: #fff; }
.screen[data-dark] h1, .screen[data-dark] h2, .screen[data-dark] h3, .screen[data-dark] b { color: #fff; }
.screen[data-dark] p, .screen[data-dark] span:not(.eyebrow):not(.core-no) { color: rgba(255,255,255,.84); }
.screen[data-dark] .scr-bg.blueprint { opacity: .1; filter: grayscale(1) invert(1) contrast(.8); }
.screen[data-dark] .scr-bg.blueprint::after {
  background:
    linear-gradient(to right, var(--navy-deep) 0%, rgba(7,35,63,0) 26%, rgba(7,35,63,0) 74%, var(--navy-deep) 100%),
    linear-gradient(to bottom, var(--navy-deep) 0%, rgba(7,35,63,.1) 22%, rgba(7,35,63,.1) 74%, var(--navy-deep) 100%);
}
/* màn hình có ảnh công trình làm nền */
.scr-photo .scr-bg { opacity: 1; }
.scr-photo .scr-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(5,25,46,.95) 0%, rgba(5,25,46,.86) 44%, rgba(5,25,46,.34) 78%, rgba(5,25,46,.18) 100%);
}

/* ---------- màn hình mở đầu + mục lục ---------- */
.scr-intro h1 { font-size: clamp(1.7rem, 3.4vw, 2.9rem); margin: 8px 0 14px; max-width: 18ch; }
.scr-intro-sub { font-size: clamp(1rem, 1.5vw, 1.24rem); font-style: italic; color: rgba(255,255,255,.88); max-width: 46ch; }
.toc { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 0; margin-top: 44px; border-top: 1px solid rgba(255,255,255,.18); }
.toc a {
  display: flex; align-items: baseline; gap: 12px; padding: 20px 18px 20px 0;
  border-bottom: 1px solid rgba(255,255,255,.14); border-right: 1px solid rgba(255,255,255,.1);
  transition: background .3s, padding-left .3s;
}
.toc a:last-child { border-right: none; }
.toc a b { color: var(--orange); font-size: .84rem; letter-spacing: .1em; }
.toc a span { font-weight: 600; color: #fff; }
.toc a:hover { background: rgba(255,255,255,.06); padding-left: 10px; }

/* ---------- bố cục 2 cột chữ · hình ---------- */
.split { display: grid; grid-template-columns: 1.04fr .96fr; gap: 56px; align-items: center; }
.split.flip .split-text { order: 2; }
.split.flip .split-aside { order: 1; }
.split-text .section-title { margin: 6px 0 16px; }
.scr-lead { font-size: 1.04rem; line-height: 1.76; max-width: 52ch; }
.scr-list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; }
.scr-list li { position: relative; padding-left: 24px; }
.scr-list li::before { content: ''; position: absolute; left: 0; top: .66em; width: 12px; height: 2px; background: var(--orange); }

/* ---------- dòng thời gian (Lịch sử hình thành) ---------- */
.tl { list-style: none; margin: 0; padding: 0 0 0 26px; position: relative; display: grid; gap: 20px; }
.tl::before { content: ''; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--orange), rgba(245,128,37,.15)); }
.tl li { position: relative; }
.tl li::before {
  content: ''; position: absolute; left: -26px; top: .45em; width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 2px solid var(--orange);
}
.tl b { display: block; color: var(--navy-deep); font-size: 1.02rem; }
.tl span { display: block; color: var(--muted); font-size: .95rem; line-height: 1.6; }

/* ---------- Sứ mệnh: 3 giai đoạn + ảnh ---------- */
.ms-grid { display: grid; gap: 12px; margin-top: 20px; }
.ms-grid > div { padding: 12px 16px; background: rgba(15,76,129,.05); border-left: 3px solid var(--orange); }
.ms-grid b { display: block; color: var(--navy-deep); font-size: .98rem; }
.ms-grid span { color: var(--muted); font-size: .93rem; }
.ms-photo { margin: 0; position: relative; overflow: hidden; box-shadow: 0 26px 60px -32px rgba(5,25,46,.6); }
.ms-photo img { width: 100%; aspect-ratio: 4 / 3.2; object-fit: cover; }

/* ---------- Giá trị cốt lõi ---------- */
.core-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 34px; }
.core-card { padding: 26px 22px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-top: 3px solid var(--orange); }
.core-no { display: block; color: var(--orange); font-size: .82rem; letter-spacing: .12em; margin-bottom: 10px; }
.core-card h3 { font-size: 1.22rem; margin-bottom: 8px; }
.core-card p { font-size: .94rem; line-height: 1.66; margin: 0; }

/* ---------- Tại sao chọn chúng tôi ---------- */
.reason-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 32px; }
.reason-card { padding: 26px 22px; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--navy); box-shadow: 0 16px 36px -28px rgba(7,35,63,.45); }
.reason-card h3 { font-size: 1.1rem; color: var(--navy-deep); margin-bottom: 8px; }
.reason-card p { font-size: .94rem; color: var(--muted); line-height: 1.66; margin: 0; }
.scr-cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 34px; }

/* ---------- co lại trên laptop màn thấp ---------- */
@media (max-height: 820px) and (min-width: 901px) {
  .screen { padding: 104px 0 58px; }
  .split { gap: 42px; }
  .scr-lead { font-size: .96rem; line-height: 1.68; }
  .tl { gap: 13px; }
  .tl b { font-size: .96rem; }
  .tl span { font-size: .88rem; }
  .core-card, .reason-card { padding: 20px 18px; }
  .core-card p, .reason-card p { font-size: .88rem; }
  .ms-grid > div { padding: 9px 14px; }
  .ms-photo img { aspect-ratio: 4 / 2.9; }
  .toc a { padding: 15px 16px 15px 0; }
}
/* ---------- điện thoại: bỏ ràng buộc 1 màn hình ---------- */
@media (max-width: 900px) {
  .screen { min-height: 0; padding: 96px 0 56px; }
  .split { grid-template-columns: 1fr; gap: 26px; }
  .split.flip .split-text, .split.flip .split-aside { order: initial; }
  .scr-photo .split-aside { display: none; }
  .core-grid, .reason-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .toc { grid-template-columns: 1fr 1fr; }
  .toc a { border-right: none; padding: 15px 0; }
  .scr-photo .scr-bg::after { background: linear-gradient(180deg, rgba(5,25,46,.9), rgba(5,25,46,.78)); }
}
@media (max-width: 560px) {
  .core-grid, .reason-grid { grid-template-columns: 1fr; }
  .toc { grid-template-columns: 1fr; }
}
/* thuộc tính width/height trên thẻ img đè aspect-ratio -> trả height về auto */
.ms-photo img, .av-letter img, .av-crane img { height: auto; }
/* đang cuộn qua phần nền tối -> giữ logo/chữ trắng cho dễ thấy */
body.nav-solid.on-dark .topnav-logo .lg-light { opacity: 1; }
body.nav-solid.on-dark .topnav-logo .lg-dark { opacity: 0; }
body.nav-solid.on-dark .burger span { background: #fff; }
body.nav-solid.on-dark .burger:hover span { background: var(--orange); }
body.nav-solid.on-dark .topnav .lang-switch .sep { color: rgba(255,255,255,.4); }
body.nav-solid.on-dark .topnav .lang-switch button { color: rgba(255,255,255,.68); }
body.nav-solid.on-dark .topnav .lang-switch button:hover,
body.nav-solid.on-dark .topnav .lang-switch button.active { color: #fff; }
@media (max-width: 900px) {
  .screen.scr-photo, .screen.scr-intro { min-height: 78vh; }
}

/* ==========================================================
   VÒNG 9 — chuyển động chậm & mềm hơn (GĐ yêu cầu ~2 giây)
   ========================================================== */
:root { --brand-blue: #0e6cc3; --brand-blue-dark: #0b5aa3; --ease-soft: cubic-bezier(.16,.72,.14,1); }
.reveal {
  transition: opacity 1.9s var(--ease-soft), transform 2s var(--ease-soft), clip-path 2s var(--ease-soft);
}
.reveal.d1 { transition-delay: .22s; }
.reveal.d2 { transition-delay: .44s; }
.reveal.d3 { transition-delay: .66s; }
.reveal.d4 { transition-delay: .88s; }
.reveal.d5 { transition-delay: 1.1s; }
.reveal.rv-left { transform: translateX(-72px); }
.reveal.rv-top  { transform: translateY(-80px); }
/* các lưới tự xếp lượt: giãn nhịp ra cho khớp nhịp chậm (JS đặt transitionDelay) */

/* nút màu xanh logo VCS + mũi tên */
.btn-brand {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--brand-blue); color: var(--white); border-color: var(--brand-blue);
  transition: background .4s ease, transform .4s ease, box-shadow .4s ease;
  box-shadow: 0 14px 30px -16px rgba(14,108,195,.75);
}
.btn-brand:hover { background: var(--brand-blue-dark); border-color: var(--brand-blue-dark); color: #fff; transform: translateX(4px); }
.btn-brand svg { width: 20px; height: 20px; flex: 0 0 auto; transition: transform .4s ease; }
.btn-brand:hover svg { transform: translateX(5px); }

/* ==========================================================
   TRANG GIỚI THIỆU — trang bìa chỉ một dòng chữ
   ========================================================== */
.scr-cover { align-items: center; }
.scr-cover .scr-bg { opacity: 1; transform: scale(1.06); animation: coverZoom 16s ease-out forwards; }
@keyframes coverZoom { to { transform: scale(1); } }
.scr-cover .scr-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(5,25,46,.9) 0%, rgba(5,25,46,.74) 46%, rgba(5,25,46,.42) 100%);
}
.scr-cover .tri {
  position: absolute; right: 0; bottom: 0; width: 24vw; max-width: 320px; aspect-ratio: 1; z-index: 1;
  background: var(--orange); clip-path: polygon(100% 18%, 100% 100%, 18% 100%); opacity: .92;
}
.cover-title {
  font-size: clamp(2.6rem, 7vw, 5.4rem); letter-spacing: -.01em; color: #fff; line-height: 1.05;
}
.cover-rule { width: 96px; height: 4px; background: var(--orange); margin-top: 26px; }

/* nền bản vẽ tay (ảnh worker-drawing) dùng cho vài màn hình */
.scr-bg.drawing { background-image: url('../assets/img/about-drawing.jpg'); opacity: .15; filter: grayscale(.3) contrast(1.03); }
.scr-bg.drawing.faint { opacity: .11; }
.scr-bg.drawing::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(to right, #fff 0%, rgba(255,255,255,0) 24%, rgba(255,255,255,0) 76%, #fff 100%),
    linear-gradient(to bottom, #fff 0%, rgba(255,255,255,.08) 22%, rgba(255,255,255,.08) 74%, #fff 100%);
}

/* ---------- Thông điệp: 2 đoạn + 3 trụ ---------- */
.msg-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 54px; align-items: start; margin-top: 34px; }
.msg-text p { font-size: 1.04rem; line-height: 1.84; color: #46525f; }
.msg-text strong { color: var(--navy-deep); }
.msg-pillars { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.msg-pillars li {
  padding: 18px 20px; background: #fff; border: 1px solid var(--line);
  border-left: 3px solid var(--orange); box-shadow: 0 16px 34px -28px rgba(7,35,63,.5);
}
.msg-pillars b { display: block; color: var(--navy-deep); font-size: 1.02rem; margin-bottom: 4px; }
.msg-pillars span { color: var(--muted); font-size: .95rem; line-height: 1.6; }

/* ---------- Lịch sử: mốc công trình trên/dưới một đường kẻ ---------- */
.milestones {
  position: relative; margin-top: 44px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; align-items: center;
}
.ms-line {
  position: absolute; left: 4%; right: 4%; top: 50%; height: 2px;
  background: linear-gradient(90deg, rgba(15,76,129,.15), var(--orange), rgba(15,76,129,.15));
}
.mstone { position: relative; display: grid; justify-items: center; text-align: center; gap: 0; }
.mstone figure { margin: 0; width: 100%; max-width: 300px; overflow: hidden; border-radius: 6px; box-shadow: 0 22px 44px -26px rgba(7,35,63,.55); }
.mstone figure img { width: 100%; height: auto; aspect-ratio: 16 / 10.4; object-fit: cover; }
.mstone .dot {
  width: 15px; height: 15px; border-radius: 50%; background: #fff;
  border: 3px solid var(--orange); z-index: 2; margin: 16px 0;
}
.mstone-txt b { display: block; color: var(--navy-deep); font-size: 1.04rem; }
.mstone-txt span { display: block; color: var(--muted); font-size: .93rem; line-height: 1.6; max-width: 30ch; margin: 4px auto 0; }
.mstone.down { grid-template-areas: 'txt' 'dot' 'img'; }
.mstone.down figure { grid-area: img; }
.mstone.down .dot { grid-area: dot; }
.mstone.down .mstone-txt { grid-area: txt; }
.mstone.up { grid-template-areas: 'img' 'dot' 'txt'; }
.mstone.up figure { grid-area: img; }
.mstone.up .dot { grid-area: dot; }
.mstone.up .mstone-txt { grid-area: txt; }

/* ---------- Giá trị cốt lõi trên nền ảnh ---------- */
.scr-core .scr-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(5,25,46,.94) 0%, rgba(5,25,46,.86) 52%, rgba(5,25,46,.7) 100%);
}
.scr-core .philo-circle { width: min(400px, 100%); }

/* ---------- Tại sao chọn chúng tôi: 3 thẻ theo 3 chữ ---------- */
.why3-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 34px; }
.why3 {
  position: relative; padding: 30px 26px 26px; background: #fff;
  border: 1px solid var(--line); border-top: 3px solid var(--brand-blue);
  box-shadow: 0 18px 40px -30px rgba(7,35,63,.5);
}
.why3-key {
  display: inline-block; margin-bottom: 12px; padding: 4px 12px;
  background: rgba(14,108,195,.08); color: var(--brand-blue);
  font-size: .82rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
}
.why3 h3 { font-size: 1.12rem; color: var(--navy-deep); margin-bottom: 10px; }
.why3 p { font-size: .95rem; color: var(--muted); line-height: 1.7; margin: 0; }

/* ---------- co lại trên laptop màn thấp ---------- */
@media (max-height: 840px) and (min-width: 901px) {
  .msg-grid { gap: 40px; margin-top: 24px; }
  .msg-text p { font-size: .95rem; line-height: 1.72; }
  .msg-pillars li { padding: 13px 16px; }
  .msg-pillars span { font-size: .88rem; }
  .milestones { margin-top: 28px; gap: 22px; }
  .mstone figure { max-width: 250px; }
  .mstone figure img { aspect-ratio: 16 / 9.6; }
  .mstone .dot { margin: 11px 0; }
  .why3 { padding: 22px 20px; }
  .why3 p { font-size: .89rem; line-height: 1.62; }
  .why3-grid { margin-top: 24px; gap: 18px; }
}
@media (max-width: 900px) {
  .msg-grid { grid-template-columns: 1fr; gap: 26px; }
  .why3-grid { grid-template-columns: 1fr; gap: 16px; }
  .milestones { grid-template-columns: 1fr; gap: 26px; }
  .ms-line { display: none; }
  .mstone.down, .mstone.up { grid-template-areas: 'img' 'dot' 'txt'; }
  .cover-rule { margin-top: 18px; }
  .reveal.rv-left { transform: translateY(48px); }
  .reveal.rv-top { transform: translateY(-48px); }
}
/* màn hình phát ngôn (Tầm nhìn) cho chữ lớn hơn một chút */
.scr-photo .section-title { font-size: clamp(1.7rem, 2.9vw, 2.5rem); }
.scr-photo .scr-lead { font-size: 1.14rem; line-height: 1.8; max-width: 46ch; }

/* ==========================================================
   VÒNG 10 — chỉnh theo góp ý GĐ 22/09/2026
   ========================================================== */
/* 1. Ảnh giấy tiêu đề: cắt thoáng hơn để thấy TRỌN logo */
.av-letter img { aspect-ratio: 16 / 9.4; object-position: 30% 38%; }
@media (max-height: 820px) and (min-width: 901px) {
  .av-letter img { aspect-ratio: 16 / 8.6; }
  .av-crane img { aspect-ratio: 16 / 9.8; }
}

/* 2. Lịch sử: sáu công trình trên một dòng thời gian */
.milestones.six { grid-template-columns: repeat(6, 1fr); gap: 14px; }
.milestones.six .mstone figure { max-width: 100%; }
.milestones.six .mstone figure img { aspect-ratio: 4 / 3; }
.milestones.six .dot { width: 13px; height: 13px; margin: 12px 0; }
.milestones.six .mstone-txt b { font-size: .92rem; line-height: 1.35; }
.milestones.six .mstone-txt span { font-size: .82rem; max-width: 22ch; }
.ms-more { text-align: center; margin: 26px 0 0; }
.ms-more a {
  display: inline-block; color: var(--navy); font-size: .93rem; font-weight: 600;
  border-bottom: 1px solid rgba(15,76,129,.35); padding-bottom: 2px; transition: color .35s, border-color .35s;
}
.ms-more a:hover { color: var(--orange); border-color: var(--orange); }

/* 3. Giá trị cốt lõi: ba khối tam giác theo màu logo, giữa là logo VICONS */
.philo-circle.tri-set .philo-core {
  width: 46%; aspect-ratio: 1; border: none; box-shadow: none;
  background: radial-gradient(circle, rgba(5,25,46,.92) 40%, rgba(5,25,46,0) 72%);
  display: grid; place-items: center;
}
.philo-circle.tri-set .philo-core img { width: 74%; height: auto; }
.philo-circle.tri-set .philo-node {
  width: 38%; aspect-ratio: 1 / .92; background: none; border-radius: 0;
  box-shadow: none; padding: 0; display: block;
}
.philo-circle.tri-set .philo-node .tri {
  position: absolute; inset: 0; display: block;
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
  filter: drop-shadow(0 14px 26px rgba(0,0,0,.45));
  transition: transform .45s var(--ease-soft), filter .45s;
}
.philo-circle.tri-set .philo-node > div {
  position: absolute; left: 12%; right: 12%; bottom: 9%;
  text-align: center; z-index: 2; color: #fff;
}
.philo-circle.tri-set .philo-node b { font-size: clamp(11px, .92vw, 13.5px); letter-spacing: .04em; line-height: 1.2; }
.philo-circle.tri-set .philo-node i { font-size: 10.5px; margin-top: 1px; opacity: .92; }
.philo-circle.tri-set .philo-node.n-blue   .tri { background: var(--brand-blue); }
.philo-circle.tri-set .philo-node.n-orange .tri { background: var(--orange); }
.philo-circle.tri-set .philo-node.n-grey   .tri { background: #4b5a67; }
.philo-circle.tri-set .philo-node:hover { background: none; transform: none; }
.philo-circle.tri-set .philo-node.p1:hover { transform: translateX(-50%); }
.philo-circle.tri-set .philo-node:hover .tri { transform: translateY(-6px) scale(1.04); }
.philo-circle.tri-set .philo-node.p2 { left: 0; bottom: 2%; }
.philo-circle.tri-set .philo-node.p3 { right: 0; bottom: 2%; }
.philo-circle.tri-set .philo-node.p1 { top: -2%; }

/* 4. Tại sao chọn chúng tôi: đoạn dẫn thay cho tiêu đề */
.why-lead { max-width: 74ch; margin-left: auto; margin-right: auto; font-size: 1.04rem; line-height: 1.8; }

@media (max-width: 900px) {
  .milestones.six { grid-template-columns: 1fr 1fr; gap: 18px; }
  .milestones.six .mstone-txt span { font-size: .8rem; }
}
@media (max-height: 840px) and (min-width: 901px) {
  .why-lead { font-size: .95rem; line-height: 1.7; }
  .milestones.six .mstone figure img { aspect-ratio: 4 / 2.8; }
}
/* tam giác to hơn chút để chữ "Trường tồn" nằm gọn bên trong */
.philo-circle.tri-set .philo-node { width: 42%; aspect-ratio: 1 / .93; }
.philo-circle.tri-set .philo-node > div { left: 9%; right: 9%; bottom: 7%; }
.philo-circle.tri-set .philo-node b { font-size: clamp(10.5px, .86vw, 12.5px); }
.philo-circle.tri-set .philo-node i { font-size: 10px; }

/* ==========================================================
   VÒNG 11 — Giá trị cốt lõi: ba tam giác cân đối quanh logo
   Ba tâm tam giác đặt cách đều 120° trên một vòng tròn nét đứt,
   logo VICONS nằm chính giữa, không khối nào đè lên logo.
   ========================================================== */
.scr-core .philo-circle.tri-set { width: min(460px, 100%); }
.philo-circle.tri-set .ring { inset: 16%; }

.philo-circle.tri-set .philo-node {
  width: 34%; aspect-ratio: 1 / .882;
  left: auto; right: auto; top: auto; bottom: auto;
}
.philo-circle.tri-set .philo-node.p1 { left: 50%; top: -4%; transform: translateX(-50%); }
.philo-circle.tri-set .philo-node.p2 { left: 3.6%; top: 47%; }
.philo-circle.tri-set .philo-node.p3 { right: 3.6%; top: 47%; }
.philo-circle.tri-set .philo-node.p1:hover { transform: translateX(-50%); }

.philo-circle.tri-set .philo-node > div { left: 8%; right: 8%; bottom: 7%; }
.philo-circle.tri-set .philo-node b { font-size: clamp(11px, .9vw, 13px); }
.philo-circle.tri-set .philo-node i { font-size: 10.5px; }

/* logo ở tâm: nhỏ gọn, có quầng tối nhẹ cho nổi trên ảnh nền */
.philo-circle.tri-set .philo-core {
  width: 34%; aspect-ratio: 1;
  background: radial-gradient(circle, rgba(5,25,46,.9) 38%, rgba(5,25,46,0) 74%);
}
.philo-circle.tri-set .philo-core img { width: 100%; }

@media (max-width: 900px) {
  .scr-core .philo-circle.tri-set { width: min(360px, 88vw); }
}
/* đặt vị trí tường minh cho ba tam giác (tránh lệch do quy tắc cũ còn sót) */
.philo-circle.tri-set .philo-node.p1 { left: 50%; right: auto; top: -4%;  bottom: auto; transform: translateX(-50%); }
.philo-circle.tri-set .philo-node.p2 { left: 3.6%;  right: auto; top: 47%; bottom: auto; transform: none; }
.philo-circle.tri-set .philo-node.p3 { left: 62.4%; right: auto; top: 47%; bottom: auto; transform: none; }
.philo-circle.tri-set .philo-node.p1:hover { transform: translateX(-50%); }
.philo-circle.tri-set .philo-node.p2:hover,
.philo-circle.tri-set .philo-node.p3:hover { transform: none; }

/* Tại sao chọn chúng tôi: sau khi bỏ 3 thẻ -> dựng thành màn phát ngôn lớn */
#tai-sao .why-lead {
  font-size: clamp(1.12rem, 1.75vw, 1.56rem); line-height: 1.75; color: var(--navy-deep);
  max-width: 60ch; margin: 22px auto 0; font-weight: 500;
}
#tai-sao .section-head::after {
  content: ''; display: block; width: 84px; height: 3px; background: var(--orange); margin: 26px auto 0;
}
#tai-sao .scr-cta { margin-top: 38px; }
@media (max-height: 840px) and (min-width: 901px) {
  #tai-sao .why-lead { font-size: clamp(1rem, 1.5vw, 1.32rem); }
}

/* Tại sao chọn chúng tôi: ảnh nền bàn làm việc + thẻ chữ nổi ở giữa */
.scr-why .scr-bg { opacity: 1; }
.scr-why .scr-bg::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(255,255,255,.82) 34%, rgba(255,255,255,.62) 66%, rgba(5,25,46,.28) 100%);
}
.scr-why .why-card {
  position: relative; max-width: 880px; margin: 0 auto;
  background: rgba(255,255,255,.93); backdrop-filter: blur(3px);
  padding: 52px 56px 54px; border-top: 4px solid var(--orange);
  box-shadow: 0 34px 80px -40px rgba(5,25,46,.7);
}
.scr-why .scr-cta { position: relative; z-index: 2; }
@media (max-width: 900px) {
  .scr-why .why-card { padding: 34px 22px 36px; }
}
@media (max-height: 840px) and (min-width: 901px) {
  .scr-why .why-card { padding: 36px 44px 38px; }
}
/* ảnh thật (bàn làm việc, bắt tay) sáng màu -> phủ lớp navy nhẹ cho thẻ chữ nổi lên */
.scr-why .scr-bg::after {
  background: linear-gradient(160deg, rgba(5,25,46,.44) 0%, rgba(5,25,46,.3) 45%, rgba(5,25,46,.52) 100%);
}
/* nút nằm luôn trong thẻ chữ cho gọn; gạch cam ngăn cách */
#tai-sao .section-head::after { display: none; }
#tai-sao .why-rule { width: 84px; height: 3px; background: var(--orange); margin: 30px auto 0; }
#tai-sao .scr-cta { margin-top: 30px; }

/* ==========================================================
   VÒNG 12 — "Tại sao chọn chúng tôi": bỏ thẻ trắng,
   chữ nằm thẳng trên ảnh (bên trái), ảnh rõ bên phải,
   hai nút nhỏ nép góc dưới bên phải màn hình.
   ========================================================== */
.scr-why .why-card { background: none; box-shadow: none; border: 0; padding: 0; max-width: none; backdrop-filter: none; }
.scr-why .scr-bg::after {
  background: linear-gradient(97deg,
    rgba(5,25,46,.95) 0%,
    rgba(5,25,46,.9) 30%,
    rgba(5,25,46,.62) 52%,
    rgba(5,25,46,.22) 76%,
    rgba(5,25,46,.08) 100%);
}
.scr-why .why-text { max-width: 640px; }
#tai-sao .why-lead {
  color: #fff; font-weight: 500; margin: 18px 0 0; text-align: left;
  font-size: clamp(1.12rem, 1.62vw, 1.46rem); line-height: 1.72; max-width: 36ch;
  max-width: none;
}
#tai-sao .why-rule { width: 84px; height: 3px; background: var(--orange); margin: 28px 0 0; }

.btn-sm { padding: 11px 20px; font-size: 12.5px; }
.btn-sm svg { width: 16px; height: 16px; }
.why-actions {
  position: absolute; right: 30px; bottom: 34px; z-index: 3;
  display: flex; gap: 10px; align-items: center;
}
.scr-why .btn-outline { border-color: rgba(255,255,255,.65); color: #fff; }
.scr-why .btn-outline:hover { background: #fff; color: var(--navy-deep); }

@media (max-height: 840px) and (min-width: 901px) {
  #tai-sao .why-lead { font-size: clamp(1rem, 1.4vw, 1.26rem); }
}
@media (max-width: 900px) {
  .scr-why .scr-bg::after {
    background: linear-gradient(180deg, rgba(5,25,46,.9), rgba(5,25,46,.82));
  }
  .scr-why .why-text { max-width: none; }
  .why-actions { position: static; margin: 28px 24px 0; flex-wrap: wrap; }
}

/* ==========================================================
   TRANG LĨNH VỰC HOẠT ĐỘNG
   ========================================================== */
.lv-split { grid-template-columns: 1.02fr .98fr; gap: 48px; }
.lv-highlight {
  margin: 18px 0 0; padding: 14px 18px; background: rgba(245,128,37,.09);
  border-left: 3px solid var(--orange); color: var(--navy-deep);
  font-size: .99rem; line-height: 1.65;
}
.lv-highlight strong { color: var(--orange-dark); }
.screen[data-dark] .lv-highlight { background: rgba(255,255,255,.08); color: rgba(255,255,255,.9); }
.screen[data-dark] .lv-highlight strong { color: var(--orange); }

/* bốn ô icon */
.icon-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.icon-card {
  padding: 22px 20px; background: #fff; border: 1px solid var(--line);
  border-top: 3px solid var(--orange); box-shadow: 0 16px 36px -30px rgba(7,35,63,.5);
}
.icon-card .ic {
  display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 12px;
  color: var(--orange); background: rgba(245,128,37,.1); border-radius: 50%;
}
.icon-card .ic svg { width: 23px; height: 23px; }
.icon-card h3 {
  font-size: .82rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--navy); margin-bottom: 7px;
}
.icon-card p { margin: 0; font-size: .92rem; line-height: 1.62; color: var(--muted); }

/* trên nền tối */
.screen[data-dark] .icon-card {
  background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.16); border-top-color: var(--orange);
  backdrop-filter: blur(2px);
}
.screen[data-dark] .icon-card h3 { color: #fff; }
.screen[data-dark] .icon-card p { color: rgba(255,255,255,.82); }
.screen[data-dark] .icon-card .ic { background: rgba(245,128,37,.18); }

/* màn Tổng thầu thi công: phủ đậm hơn vì có 4 ô chữ đè lên ảnh */
.lv-dark .scr-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(5,25,46,.95) 0%, rgba(5,25,46,.88) 46%, rgba(5,25,46,.72) 100%);
}

/* lưới 4 ảnh (Năng lực thiết bị) */
.photo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.photo-grid figure { margin: 0; overflow: hidden; box-shadow: 0 18px 40px -28px rgba(5,25,46,.6); }
.photo-grid img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; display: block; }

@media (max-height: 840px) and (min-width: 901px) {
  .icon-card { padding: 16px 16px; }
  .icon-card .ic { width: 36px; height: 36px; margin-bottom: 9px; }
  .icon-card p { font-size: .86rem; line-height: 1.55; }
  .lv-highlight { padding: 11px 15px; font-size: .92rem; margin-top: 14px; }
  .photo-grid img { aspect-ratio: 4 / 2.8; }
}
@media (max-width: 900px) {
  .lv-split { grid-template-columns: 1fr; gap: 26px; }
  .icon-grid { gap: 12px; }
  .icon-card { padding: 16px 15px; }
  .photo-grid { gap: 10px; }
}
@media (max-width: 560px) {
  .icon-grid { grid-template-columns: 1fr; }
}
.screen[data-dark] .icon-card .ic { color: var(--orange); }

/* ==========================================================
   VÒNG 13 — Mục lục dạng bảng dọc sát mép phải
   Nửa trái vẫn thấy trang đang chạy (ảnh công trình tự chuyển)
   ========================================================== */
.site-menu { display: block; padding: 0; }
.sm-scrim {
  position: absolute; inset: 0; background: rgba(5,25,46,.34);
  opacity: 0; transition: opacity .55s var(--ease-soft); cursor: pointer;
}
body.menu-open .sm-scrim { opacity: 1; }
.sm-panel {
  position: absolute; top: 0; right: 0; height: 100%;
  width: min(400px, 86vw);
  background: rgba(5,25,46,.97);
  box-shadow: -30px 0 70px -40px rgba(0,0,0,.9);
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 46px;
  transform: translateX(100%);
  transition: transform .62s var(--ease-soft);
}
body.menu-open .sm-panel { transform: none; }
.sm-panel::before {                 /* vạch cam mảnh ở mép trái bảng */
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--orange);
}
.sm-panel nav { display: grid; }
.sm-panel nav a {
  position: relative; display: block; padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.88); font-size: clamp(1rem, 1.35vw, 1.22rem);
  font-weight: 600; letter-spacing: .01em;
  transition: color .35s, padding-left .35s;
}
.sm-panel nav a:first-child { border-top: 1px solid rgba(255,255,255,.12); }
.sm-panel nav a::before {
  content: ''; position: absolute; left: 0; top: 50%; width: 0; height: 2px;
  background: var(--orange); transform: translateY(-50%); transition: width .35s var(--ease-soft);
}
.sm-panel nav a:hover { color: #fff; padding-left: 30px; }
.sm-panel nav a:hover::before { width: 20px; }
.sm-panel .site-menu-foot {
  margin-top: 40px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  color: rgba(255,255,255,.55); font-size: .88rem;
}
.sm-panel .site-menu-foot a { color: rgba(255,255,255,.8); }
.sm-panel .site-menu-foot a:hover { color: var(--orange); }
/* nút 3 gạch luôn nằm trên bảng menu */
.topnav { z-index: 130; }

/* ==========================================================
   MÀU NỀN THEO TỪNG TRANG + hình chìm rõ hơn (24%)
   ========================================================== */
:root { --tint: #ffffff; }
body { background: var(--tint); }
.screen { background: var(--tint); }
.about-screen { background: var(--tint); }
body[data-page="gioi-thieu"] { --tint: #edf3fa; }   /* xanh chìm */
body[data-page="linh-vuc"]   { --tint: #fdf4ec; }   /* cam chìm */

/* hình chìm rõ thêm 40% */
.about-bg { opacity: .24; }
.scr-bg.blueprint { opacity: .24; }
.scr-bg.blueprint.faint { opacity: .2; }
.scr-bg.drawing { opacity: .24; }
.scr-bg.drawing.faint { opacity: .2; }
/* lớp làm mờ rìa đổi theo màu nền của trang */
.scr-bg.blueprint::after, .scr-bg.drawing::after, .about-bg::after {
  background:
    linear-gradient(to right, var(--tint) 0%, rgba(255,255,255,0) 24%, rgba(255,255,255,0) 76%, var(--tint) 100%),
    linear-gradient(to bottom, var(--tint) 0%, rgba(255,255,255,0) 22%, rgba(255,255,255,0) 74%, var(--tint) 100%);
}

/* các mục trên trang chủ */
#cung-nhau { --tint: #f1f3f5; }                      /* trang đệm: xám */
.projects { background: #f2f5f8; }                   /* dự án: xám ngả xanh */
#careers { background: #fdf6ee; }                    /* tuyển dụng: cam nhạt */
#contact { background: var(--navy-deep); }           /* liên hệ: navy đóng trang */

/* ==========================================================
   TRANG ĐỆM "CÙNG NHAU"
   ========================================================== */
.scr-bridge { overflow: hidden; }
.bridge-grid { display: grid; grid-template-columns: 1fr 1.02fr; gap: 56px; align-items: center; }
.bridge-text { position: relative; padding-left: 4px; }
.quote-mark {
  display: block; font-size: 74px; line-height: .6; color: var(--navy);
  opacity: .35; margin-bottom: 18px; font-family: Georgia, serif;
}
.bridge-title {
  font-size: clamp(1.5rem, 2.5vw, 2.15rem); line-height: 1.38; color: var(--muted); font-weight: 500;
}
.bridge-title strong { color: var(--navy-deep); font-weight: 800; }
.bridge-sub { margin: 20px 0 26px; color: var(--muted); line-height: 1.75; max-width: 46ch; }
.bridge-photo { margin: 0; position: relative; overflow: hidden; box-shadow: 0 28px 64px -34px rgba(5,25,46,.6); }
.bridge-photo img { width: 100%; height: auto; aspect-ratio: 4 / 3.1; object-fit: cover; display: block; }
.bridge-index {
  position: absolute; right: 30px; top: 50%; transform: translateY(-50%);
  list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; z-index: 3;
}
.bridge-index li { font-size: .78rem; letter-spacing: .12em; color: rgba(15,76,129,.34); }
.bridge-index li:nth-child(5) { color: var(--orange); }

@media (max-height: 840px) and (min-width: 901px) {
  .quote-mark { font-size: 56px; margin-bottom: 12px; }
  .bridge-sub { margin: 14px 0 20px; }
  .bridge-photo img { aspect-ratio: 4 / 2.7; }
}
@media (max-width: 900px) {
  .bridge-grid { grid-template-columns: 1fr; gap: 26px; }
  .bridge-index { display: none; }
  .sm-panel { width: min(340px, 84vw); padding: 0 28px; }
}
/* dọn các quy tắc menu phủ toàn màn hình cũ */
.site-menu { background: transparent; display: block; }
.site-menu::after { display: none; }
.sm-panel nav { text-align: left; }
.sm-panel nav a { text-transform: uppercase; font-size: clamp(.95rem, 1.15vw, 1.08rem); letter-spacing: .04em; }
/* trang đệm: chừa một dải trống bên phải cho cột số 01–09 */
.scr-bridge .container { padding-right: 96px; }
.bridge-index { right: 32px; gap: 16px; }
.bridge-index li { font-size: .8rem; font-weight: 600; color: rgba(15,76,129,.42); }
.bridge-index li:nth-child(5) { color: var(--orange); }
@media (max-width: 1100px) { .scr-bridge .container { padding-right: 24px; } .bridge-index { display: none; } }

/* ==========================================================
   VÒNG 14 — Trang Dự án · Tuyển dụng · Liên hệ
   ========================================================== */
body[data-page="du-an"]     { --tint: #f2f5f8; }   /* xám ngả xanh */
body[data-page="tuyen-dung"]{ --tint: #fdf6ee; }   /* cam nhạt */
body[data-page="lien-he"]   { --tint: #07233f; }   /* navy */

/* ---- từng công trình một màn hình ---- */
.prj-no {
  display: block; font-size: clamp(2.4rem, 4.6vw, 4rem); font-weight: 800; line-height: 1;
  color: rgba(15,76,129,.13); margin-bottom: 6px; letter-spacing: -.02em;
}
.prj-no.light { color: rgba(255,255,255,.18); }
.prj-meta { list-style: none; margin: 20px 0 24px; padding: 0; display: grid; gap: 10px; }
.prj-meta li { display: flex; gap: 14px; align-items: baseline; border-top: 1px solid var(--line); padding-top: 10px; }
.screen[data-dark] .prj-meta li { border-color: rgba(255,255,255,.18); }
.prj-meta b {
  flex: 0 0 96px; font-size: .74rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--orange); font-weight: 700;
}
.prj-meta span { color: var(--muted); font-size: .96rem; }
.screen[data-dark] .prj-meta span { color: rgba(255,255,255,.85); }
.prj-photo { margin: 0; position: relative; overflow: hidden; box-shadow: 0 28px 64px -34px rgba(5,25,46,.6); }
.prj-photo img { width: 100%; height: auto; aspect-ratio: 4 / 3.1; object-fit: cover; display: block; }
.prj .btn-sm { cursor: pointer; }

/* ---- Tuyển dụng ---- */
.role-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 34px; }
.role-card {
  padding: 26px 22px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16);
  border-top: 3px solid var(--orange); backdrop-filter: blur(2px);
}
.role-card h3 { font-size: 1.08rem; color: #fff; margin-bottom: 10px; }
.role-card p { margin: 0; font-size: .93rem; line-height: 1.66; color: rgba(255,255,255,.82); }
.apply-steps { list-style: none; counter-reset: st; margin: 20px 0 26px; padding: 0; display: grid; gap: 16px; }
.apply-steps li { counter-increment: st; position: relative; padding-left: 46px; }
.apply-steps li::before {
  content: counter(st, decimal-leading-zero); position: absolute; left: 0; top: 0;
  width: 32px; height: 32px; display: grid; place-items: center;
  background: rgba(245,128,37,.12); color: var(--orange); font-size: .78rem; font-weight: 800; border-radius: 50%;
}
.apply-steps b { display: block; color: var(--navy-deep); font-size: 1rem; }
.apply-steps span { color: var(--muted); font-size: .94rem; line-height: 1.62; }

/* ---- Liên hệ ---- */
.scr-contact { background: var(--navy-deep); }
.scr-contact .contact-box { box-shadow: 0 40px 90px -50px rgba(0,0,0,.9); }

/* ---- nút tải hồ sơ năng lực nép góc ---- */
.profile-fab {
  position: fixed; right: 30px; bottom: 30px; z-index: 95;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; background: var(--brand-blue); color: #fff;
  font-size: 12.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  box-shadow: 0 18px 38px -18px rgba(14,108,195,.85);
  transition: background .35s, transform .35s;
}
.profile-fab svg { width: 17px; height: 17px; }
.profile-fab:hover { background: var(--brand-blue-dark); color: #fff; transform: translateY(-2px); }
.to-top { bottom: 96px; }

@media (max-height: 840px) and (min-width: 901px) {
  .prj-no { font-size: clamp(2rem, 3.4vw, 3rem); }
  .prj-meta { margin: 14px 0 18px; gap: 7px; }
  .prj-photo img { aspect-ratio: 4 / 2.7; }
  .role-card { padding: 18px 16px; }
  .role-card p { font-size: .87rem; line-height: 1.55; }
  .apply-steps { gap: 11px; margin: 14px 0 20px; }
  .apply-steps span { font-size: .88rem; }
}
@media (max-width: 900px) {
  .role-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .profile-fab { right: 16px; bottom: 16px; padding: 10px 14px; font-size: 11.5px; }
}
@media (max-width: 560px) {
  .role-grid { grid-template-columns: 1fr; }
  .profile-fab span { display: none; }
  .profile-fab { padding: 12px; }
}

/* ==========================================================
   VÒNG 15 — Trang chủ: DỰ ÁN TIÊU BIỂU (dải ảnh mở rộng khi rê chuột)
   ========================================================== */
.scr-feature { padding: 0; overflow: hidden; background: var(--navy-deep); }
.scr-feature::before {      /* nền tối bên trái để chữ luôn đọc được */
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 42%;
  background: linear-gradient(90deg, rgba(5,25,46,.92) 0%, rgba(5,25,46,.55) 52%, rgba(5,25,46,0) 100%);
  z-index: 4; pointer-events: none;
}
.feature-head {
  position: absolute; left: clamp(24px, 4.5vw, 72px); top: 22%; z-index: 5; color: #fff; max-width: 340px;
}
.feature-head .eyebrow { color: var(--orange); }
.feature-head h2 {
  margin: 10px 0 0; font-size: clamp(1.9rem, 3.4vw, 3rem); line-height: 1.12; font-weight: 400;
}
.feature-head h2 strong { font-weight: 800; }
.feature-all {
  display: inline-flex; align-items: center; gap: 12px; margin-top: 26px; color: #fff;
  font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  border-bottom: 1px solid rgba(255,255,255,.45); padding-bottom: 7px;
  transition: color .35s, border-color .35s, gap .35s;
}
.feature-all svg { width: 17px; height: 17px; }
.feature-all:hover { color: var(--orange); border-color: var(--orange); gap: 18px; }

.feature-strip { display: flex; height: 100%; width: 100%; }
.fp {
  position: relative; flex: 1 1 0; min-width: 0;
  background-size: cover; background-position: center;
  border-left: 1px solid rgba(255,255,255,.14);
  transition: flex-grow 1.1s var(--ease-soft), filter .6s ease;
  filter: saturate(.85);
}
.fp::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(5,25,46,.5) 0%, rgba(5,25,46,.15) 42%, rgba(5,25,46,.9) 100%);
  transition: background .6s ease;
}
.fp.on { flex-grow: 3.4; filter: none; }
.feature-strip:hover .fp { flex-grow: 1; filter: saturate(.85); }
.feature-strip .fp:hover { flex-grow: 3.4; filter: none; }
.feature-strip .fp:hover::after { background: linear-gradient(180deg, rgba(5,25,46,.42) 0%, rgba(5,25,46,.08) 42%, rgba(5,25,46,.88) 100%); }

.fp-name {
  position: absolute; left: 50%; bottom: 96px; z-index: 2; color: #fff;
  font-weight: 800; font-size: 1.02rem; letter-spacing: .04em; text-transform: uppercase;
  white-space: nowrap; writing-mode: vertical-rl; transform: translateX(-50%) rotate(180deg);
  transform-origin: center; text-shadow: 0 2px 12px rgba(0,0,0,.6);
  transition: all .6s var(--ease-soft);
}
.fp-type {
  position: absolute; left: 30px; bottom: 60px; z-index: 2; color: rgba(255,255,255,.85);
  font-size: .82rem; letter-spacing: .06em; opacity: 0; transform: translateY(10px);
  transition: opacity .5s ease .2s, transform .5s ease .2s; white-space: nowrap;
}
/* tấm đang mở: tên nằm ngang ở góc dưới trái */
.fp.on .fp-name, .feature-strip .fp:hover .fp-name {
  left: 30px; bottom: 92px; writing-mode: horizontal-tb; transform: none;
  font-size: clamp(1.1rem, 1.6vw, 1.5rem);
}
.fp.on .fp-type, .feature-strip .fp:hover .fp-type { opacity: 1; transform: none; }
.feature-strip:hover .fp.on .fp-name { writing-mode: vertical-rl; left: 50%; bottom: 96px; transform: translateX(-50%) rotate(180deg); font-size: 1.02rem; }
.feature-strip:hover .fp.on .fp-type { opacity: 0; }
.feature-strip .fp:hover .fp-name { writing-mode: horizontal-tb; left: 30px; bottom: 92px; transform: none; font-size: clamp(1.1rem, 1.6vw, 1.5rem); }

@media (max-width: 900px) {
  .scr-feature { min-height: 0; padding: 96px 0 40px; display: block; }
  .scr-feature::before { display: none; }
  .feature-head { position: static; padding: 0 24px 26px; max-width: none; }
  .feature-strip { flex-direction: column; height: auto; }
  .fp { height: 190px; flex: none; border-left: 0; border-top: 1px solid rgba(255,255,255,.14); }
  .fp-name { writing-mode: horizontal-tb; left: 24px; bottom: 54px; transform: none; font-size: 1.1rem; }
  .fp-type { left: 24px; bottom: 30px; opacity: 1; transform: none; }
}

/* ==========================================================
   TRANG LIÊN HỆ — thông tin bên trái, ảnh công trình bên phải
   ========================================================== */
.scr-lh { background: var(--navy-deep); }
.lh-grid { display: grid; grid-template-columns: 1fr 1.06fr; gap: 56px; align-items: center; }
.lh-title { font-size: clamp(2rem, 3.6vw, 3.1rem); line-height: 1.1; font-weight: 400; color: #fff; margin: 12px 0 30px; }
.lh-title strong { font-weight: 800; }
.lh-list { list-style: none; margin: 0 0 32px; padding: 0; display: grid; gap: 20px; }
.lh-list li { display: flex; gap: 16px; align-items: flex-start; }
.lh-list .ic {
  flex: 0 0 auto; width: 42px; height: 42px; display: grid; place-items: center;
  background: rgba(245,128,37,.16); color: var(--orange); border-radius: 50%;
}
.lh-list .ic svg { width: 20px; height: 20px; }
.lh-list b { display: block; color: #fff; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 4px; }
.lh-list span, .lh-list a { color: rgba(255,255,255,.88); font-size: 1.02rem; line-height: 1.55; }
.lh-list a:hover { color: var(--orange); }

.lh-social { display: flex; align-items: center; gap: 18px; margin-bottom: 28px; flex-wrap: wrap; }
.lh-social-lb { color: rgba(255,255,255,.55); font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; }
.lh-icons { display: flex; gap: 10px; }
.lh-icons a {
  width: 40px; height: 40px; display: grid; place-items: center; color: #fff;
  border: 1px solid rgba(255,255,255,.28); border-radius: 50%;
  transition: background .35s, border-color .35s, color .35s, transform .35s;
}
.lh-icons svg { width: 18px; height: 18px; }
.lh-icons a:hover { background: var(--orange); border-color: var(--orange); color: #fff; transform: translateY(-2px); }

.lh-photo { position: relative; margin: 0; }
.lh-photo img { width: 100%; height: auto; aspect-ratio: 4 / 4.2; object-fit: cover; display: block; box-shadow: 0 40px 90px -50px rgba(0,0,0,.9); }
.lh-mark {
  position: absolute; right: -6%; top: 50%; transform: translateY(-50%);
  width: 46%; opacity: .16; pointer-events: none; mix-blend-mode: screen;
}
.lh-mark img { width: 100%; height: auto; }

@media (max-height: 840px) and (min-width: 901px) {
  .lh-list { gap: 14px; margin-bottom: 22px; }
  .lh-title { margin-bottom: 20px; }
  .lh-photo img { aspect-ratio: 4 / 3.2; }
}
@media (max-width: 900px) {
  .lh-grid { grid-template-columns: 1fr; gap: 28px; }
  .lh-photo { order: 2; }
  .lh-mark { display: none; }
}
/* dải dự án: bỏ flex căn giữa của .screen để dải ảnh cao trọn màn hình */
.scr-feature { display: block; height: 100vh; height: 100svh; }
.scr-feature .feature-strip { height: 100%; }
@media (max-width: 900px) { .scr-feature { height: auto; } }

/* ==========================================================
   VÒNG 16 — Trang Liên hệ: chia đôi màn hình, ảnh tràn mép
   ========================================================== */
.scr-lh {
  padding: 0; display: block; overflow: hidden;
  height: 100vh; height: 100svh;
  background: linear-gradient(150deg, #0a2f57 0%, #0f4c81 58%, #12599a 100%);
}
.scr-lh .lh-grid {
  display: grid; grid-template-columns: 1fr 1fr; height: 100%;
  align-items: center; gap: 0; max-width: none; padding: 0;
}
.scr-lh .lh-info {
  padding: 0 clamp(28px, 5vw, 96px); max-width: 620px; justify-self: end; width: 100%;
}
.scr-lh .lh-title { margin: 12px 0 28px; }

/* nửa phải: ảnh tràn từ mép trên tới mép dưới */
.lh-photo { position: relative; height: 100%; overflow: hidden; }
.lh-photo-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transform: scale(1.05); animation: coverZoom 18s ease-out forwards;
}
.lh-photo::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(200deg, rgba(5,25,46,.5) 0%, rgba(5,25,46,.18) 45%, rgba(5,25,46,.62) 100%);
}
.lh-logo {
  position: absolute; left: 50%; top: 46%; transform: translate(-50%, -50%);
  width: min(46%, 300px); height: auto; z-index: 2;
  filter: drop-shadow(0 18px 40px rgba(0,0,0,.6));
}

/* cột số bên mép phải */
.lh-index {
  position: absolute; right: 26px; top: 50%; transform: translateY(-50%);
  list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; z-index: 5;
}
.lh-index li { font-size: .8rem; font-weight: 600; letter-spacing: .1em; color: rgba(255,255,255,.35); }
.lh-index li.now { color: var(--orange); }

@media (max-height: 840px) and (min-width: 901px) {
  .scr-lh .lh-title { margin-bottom: 20px; }
  .lh-logo { width: min(40%, 250px); }
}
@media (max-width: 900px) {
  .scr-lh { height: auto; }
  .scr-lh .lh-grid { grid-template-columns: 1fr; }
  .scr-lh .lh-info { order: 2; padding: 40px 24px 56px; justify-self: stretch; max-width: none; }
  .lh-photo { order: 1; height: 58vh; }
  .lh-index { display: none; }
}
/* logo trên ảnh trang Liên hệ: đè lên quy tắc .lh-photo img cũ */
.lh-photo .lh-logo {
  width: min(46%, 300px); height: auto; aspect-ratio: auto; object-fit: contain;
  box-shadow: none; position: absolute; left: 50%; top: 46%;
  transform: translate(-50%, -50%); z-index: 3;
}
.lh-photo .lh-logo.reveal { transform: translate(-50%, -50%) translateY(26px); }
.lh-photo .lh-logo.reveal.in { transform: translate(-50%, -50%) !important; }
.lh-index li { text-shadow: 0 2px 10px rgba(0,0,0,.7); color: rgba(255,255,255,.55); }
.lh-index li.now { color: var(--orange); }

/* ==========================================================
   VÒNG 17 — 1. Hero: ảnh công trình chạy theo 3 cột dọc
   (ảnh hiển thị nhỏ hơn nên không bị vỡ/phóng to quá mức)
   ========================================================== */
.hero-trio { display: flex; background: var(--navy-deep); }
.hero-trio > span {
  flex: 1 1 0; min-width: 0; display: block;
  background-size: cover; background-position: center;
  border-left: 1px solid rgba(255,255,255,.12);
  opacity: 0; transform: scale(1.07);
  transition: opacity .9s ease, transform 5s ease-out;
}
.hero-trio > span:first-child { border-left: 0; }
.hero-trio.on > span { opacity: 1; transform: scale(1); }
.hero-trio.on > span:nth-child(2) { transition-delay: .16s; }
.hero-trio.on > span:nth-child(3) { transition-delay: .32s; }
@media (max-width: 700px) {
  .hero-trio > span:nth-child(3) { display: none; }
}

/* ==========================================================
   2. Trang đệm: chữ trái · ảnh tràn mép phải 56%
   ========================================================== */
.scr-bridge { display: block; height: 100vh; height: 100svh; padding: 0; overflow: hidden; }
.bridge-split { display: grid; grid-template-columns: 44% 56%; height: 100%; align-items: center; }
.bridge-text { padding: 0 clamp(26px, 5vw, 86px); position: relative; z-index: 2; }
.bridge-photo { position: relative; height: 100%; overflow: hidden; }
.bridge-photo-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transform: scale(1.06); animation: coverZoom 20s ease-out forwards;
}
.bridge-photo::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--tint) 0%, rgba(255,255,255,0) 22%);
}
.bridge-title { font-size: clamp(1.6rem, 2.7vw, 2.4rem); }
.scr-bridge .quote-mark { font-size: 64px; }

/* ==========================================================
   3. Gam màu từng trang đậm hơn + quầng màu ở góc
   ========================================================== */
body[data-page="gioi-thieu"] { --tint: #e4edf8; --accent: 15,76,129; }
body[data-page="linh-vuc"]   { --tint: #fdeedc; --accent: 245,128,37; }
body[data-page="du-an"]      { --tint: #e9eef4; --accent: 15,76,129; }
body[data-page="tuyen-dung"] { --tint: #fdefe1; --accent: 245,128,37; }
body { --accent: 15,76,129; }
#cung-nhau { --tint: #e8ecef; --accent: 90,105,120; }
.projects { background: #e9eef4; }
#careers { background: #fdefe1; }

.screen:not([data-dark])::before,
.about-screen:not([data-dark])::before {
  content: ''; position: absolute; right: 0; top: 0; width: 52%; height: 66%;
  background: radial-gradient(ellipse at 78% 8%, rgba(var(--accent), .16), rgba(var(--accent), 0) 68%);
  pointer-events: none; z-index: 0;
}
.screen:not([data-dark])::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 44%; height: 52%;
  background: radial-gradient(ellipse at 10% 92%, rgba(var(--accent), .12), rgba(var(--accent), 0) 66%);
  pointer-events: none; z-index: 0;
}
.scr-bridge::before, .scr-bridge::after, .scr-feature::after { display: none; }

/* ==========================================================
   4. Trang Liên hệ: nền xanh sáng hơn, hoà dần vào ảnh
   ========================================================== */
.scr-lh { background: linear-gradient(135deg, #10457c 0%, #1560a8 52%, #1e72c4 100%); }
.scr-lh::before, .scr-lh::after { display: none; }
.lh-photo::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 34%; z-index: 1;
  background: linear-gradient(90deg, #1560a8 0%, rgba(21,96,168,.55) 42%, rgba(21,96,168,0) 100%);
}
.lh-photo::after { background: linear-gradient(200deg, rgba(5,25,46,.42) 0%, rgba(5,25,46,.06) 45%, rgba(5,25,46,.5) 100%); }
.lh-list .ic { background: rgba(255,255,255,.14); color: #fff; }
.lh-social { gap: 12px; }

/* nút Liên hệ VICONS */
.btn-cta {
  display: inline-flex; align-items: center; gap: 14px;
  padding: 17px 32px; background: var(--orange); color: #fff; border: 0;
  font-family: inherit; font-size: 13.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  cursor: pointer; border-radius: 2px;
  box-shadow: 0 18px 40px -16px rgba(245,128,37,.8);
  transition: background .35s, transform .35s, box-shadow .35s, gap .35s;
}
.btn-cta svg { width: 19px; height: 19px; }
.btn-cta:hover { background: var(--orange-dark); color: #fff; transform: translateY(-2px); gap: 20px; box-shadow: 0 22px 46px -16px rgba(245,128,37,.95); }

/* ==========================================================
   5. Bảng "Gửi tin nhắn cho chúng tôi"
   ========================================================== */
body.cm-open { overflow: hidden; }
.cmodal { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 24px; }
.cmodal-scrim { position: absolute; inset: 0; background: rgba(5,25,46,.72); backdrop-filter: blur(3px); opacity: 0; transition: opacity .35s ease; }
.cmodal.show .cmodal-scrim { opacity: 1; }
.cmodal-box {
  position: relative; width: min(760px, 100%); max-height: 88vh; overflow: auto;
  background: #fff; padding: 42px clamp(22px, 4vw, 54px) 38px; text-align: center;
  box-shadow: 0 50px 100px -40px rgba(0,0,0,.7);
  opacity: 0; transform: translateY(26px) scale(.98);
  transition: opacity .4s var(--ease-soft), transform .5s var(--ease-soft);
}
.cmodal.show .cmodal-box { opacity: 1; transform: none; }
.cmodal-x {
  position: absolute; right: 16px; top: 16px; width: 38px; height: 38px;
  background: none; border: 0; color: var(--muted); cursor: pointer; display: grid; place-items: center;
  transition: color .3s, transform .3s;
}
.cmodal-x svg { width: 20px; height: 20px; }
.cmodal-x:hover { color: var(--orange); transform: rotate(90deg); }
.cmodal-logo { width: 96px; height: auto; margin: 0 auto 14px; }
.cmodal h2 { font-size: clamp(1.3rem, 2.2vw, 1.8rem); color: var(--navy); font-weight: 400; }
.cmodal h2 strong { font-weight: 800; color: var(--navy-deep); }
.cmodal-sub { color: var(--muted); margin: 10px 0 26px; font-size: .96rem; }
.cm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; text-align: left; }
.cm-grid input, .cm-grid textarea {
  width: 100%; padding: 14px 16px; border: 1px solid var(--line); border-radius: 2px;
  font-family: inherit; font-size: .95rem; color: var(--ink); background: #fbfcfd;
  transition: border-color .3s, box-shadow .3s;
}
.cm-grid input:focus, .cm-grid textarea:focus {
  outline: none; border-color: var(--brand-blue); box-shadow: 0 0 0 3px rgba(14,108,195,.12); background: #fff;
}
.cm-grid .full { grid-column: 1 / -1; resize: vertical; }
.cmodal form .btn-cta { margin-top: 22px; }
.cmodal .form-msg { margin: 16px 0 0; color: #1d8f4e; font-size: .92rem; opacity: 0; transition: opacity .3s; }
.cmodal .form-msg.show { opacity: 1; }

@media (max-width: 700px) {
  .cm-grid { grid-template-columns: 1fr; }
  .cmodal-box { padding: 34px 20px 30px; }
}
@media (max-width: 900px) {
  .scr-bridge { height: auto; }
  .bridge-split { grid-template-columns: 1fr; }
  .bridge-text { padding: 90px 24px 34px; }
  .bridge-photo { height: 46vh; }
  .bridge-photo::after { background: linear-gradient(0deg, rgba(0,0,0,0) 70%, var(--tint) 100%); }
}
/* .screen[data-dark] có độ ưu tiên cao hơn .scr-lh nên phải viết rõ hai lớp */
.screen.scr-lh { background: linear-gradient(135deg, #10457c 0%, #1560a8 52%, #1e72c4 100%); }

/* ==========================================================
   VÒNG 18 — Nút liên hệ màu xanh · màn Liên hệ khép lại mọi trang
   · mục lục 3 gạch kết bằng 3 kênh của VICONS
   ========================================================== */

/* 1. Nút "Liên hệ VICONS" / "Gửi ngay": đổi cam -> xanh thương hiệu */
.btn-cta {
  background: linear-gradient(135deg, #06294d 0%, #0f4c81 52%, #1668b8 100%);
  border: 1px solid rgba(255,255,255,.26);
  box-shadow: 0 18px 40px -16px rgba(4,22,44,.95);
}
.btn-cta:hover {
  background: linear-gradient(135deg, #0a3a6b 0%, #1668b8 52%, #2f8ae0 100%);
  box-shadow: 0 24px 50px -16px rgba(4,22,44,1);
}
.cmodal form .btn-cta { border-color: rgba(15,76,129,.25); }

/* 2. Màn Liên hệ khi nằm ở cuối các trang (không có nút liên hệ) */
.lh-embed .lh-info { padding-top: 34px; padding-bottom: 34px; }
.lh-copy {
  margin: 26px 0 0; font-size: .82rem; letter-spacing: .02em;
  color: rgba(255,255,255,.5);
}
.lh-embed .lh-social { margin-bottom: 0; }

/* 3. Cột số bên mép phải tự dựng theo số màn của trang */
.lh-index[data-auto]:empty { display: none; }

/* 4. Ba kênh của VICONS ở cuối mục lục 3 gạch */
.sm-panel .site-menu-foot.sm-social {
  display: flex; gap: 10px; margin-top: 34px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.14);
}
.sm-social a {
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,.26); border-radius: 50%;
  color: rgba(255,255,255,.9); background: rgba(255,255,255,.06);
  transition: background .3s, border-color .3s, transform .3s, color .3s;
}
.sm-social a svg { width: 18px; height: 18px; }
.sm-social a:hover {
  background: var(--orange); border-color: var(--orange); color: #fff; transform: translateY(-2px);
}

@media (max-width: 900px) {
  .lh-embed .lh-info { padding-top: 40px; padding-bottom: 48px; }
}

/* ==========================================================
   VÒNG 19 — Chuẩn hoá nội dung · Lĩnh vực hoạt động dựng lại
   ========================================================== */

/* 1f. Dòng bản quyền: sát mép dưới màn hình, nhỏ và mờ */
.scr-lh .lh-copy {
  position: absolute; z-index: 3; bottom: 18px; margin: 0;
  left: max(clamp(28px, 5vw, 96px), calc(50% - 620px + clamp(28px, 5vw, 96px)));
  font-size: .7rem; letter-spacing: .04em; color: rgba(255,255,255,.34);
  opacity: 1 !important; transform: none !important;
}

/* nền chìm bằng ảnh công trường (thay cho bản vẽ) */
.scr-bg.photo-faint { opacity: .2; filter: grayscale(.4) contrast(1.02); }
.scr-bg.photo-faint::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(to right, var(--tint) 0%, rgba(255,255,255,0) 24%, rgba(255,255,255,0) 76%, var(--tint) 100%),
    linear-gradient(to bottom, var(--tint) 0%, rgba(255,255,255,0) 22%, rgba(255,255,255,0) 74%, var(--tint) 100%);
}

/* 2b–c. Màn Tổng thầu: ảnh nền rõ, chữ gọn một bên, 4 ý thành dải đáy */
.scr-clear {
  display: block; padding: 0; overflow: hidden;
  height: 100vh; height: 100svh; min-height: 640px;
  --bar-h: 132px;
}
.scr-clear .scr-bg { opacity: 1; }
.scr-clear .scr-bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(5,25,46,.9) 0%, rgba(5,25,46,.78) 28%, rgba(5,25,46,.3) 48%, rgba(5,25,46,0) 62%),
    linear-gradient(0deg, rgba(5,25,46,.5) 0%, rgba(5,25,46,0) 24%),
    linear-gradient(180deg, rgba(5,25,46,.45) 0%, rgba(5,25,46,0) 16%);
}
.scr-clear.flip .scr-bg::after {
  background:
    linear-gradient(270deg, rgba(5,25,46,.9) 0%, rgba(5,25,46,.78) 28%, rgba(5,25,46,.3) 48%, rgba(5,25,46,0) 62%),
    linear-gradient(0deg, rgba(5,25,46,.5) 0%, rgba(5,25,46,0) 24%),
    linear-gradient(180deg, rgba(5,25,46,.45) 0%, rgba(5,25,46,0) 16%);
}
.clear-wrap {
  position: relative; z-index: 2; height: calc(100% - var(--bar-h));
  display: flex; align-items: center; padding-top: 92px; padding-bottom: 16px;
}
.scr-clear.flip .clear-wrap { justify-content: flex-end; }
.clear-text { max-width: 540px; }
.clear-text .section-title { color: #fff; }
.clear-text .scr-lead { color: rgba(255,255,255,.92); text-shadow: 0 1px 14px rgba(0,0,0,.35); max-width: none; }
.clear-text .lv-highlight { margin-top: 16px; }

.clear-bar {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; height: var(--bar-h);
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: rgba(5,25,46,.62); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255,255,255,.14);
}
.cb-item {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 24px clamp(18px, 2vw, 32px); border-left: 1px solid rgba(255,255,255,.12);
}
.cb-item:first-child { border-left: 0; }
.cb-item .ic {
  flex: none; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  color: var(--orange); background: rgba(245,128,37,.16);
}
.cb-item .ic svg { width: 21px; height: 21px; }
.cb-item h3 {
  margin: 2px 0 6px; font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: #fff;
}
.cb-item p { margin: 0; font-size: .86rem; line-height: 1.5; color: rgba(255,255,255,.8); }

@media (max-height: 820px) and (min-width: 901px) {
  .scr-clear { --bar-h: 118px; }
  .cb-item { padding: 18px 20px; }
  .cb-item p { font-size: .8rem; }
  .clear-text .scr-lead { font-size: .95rem; line-height: 1.64; }
}
@media (max-width: 900px) {
  .scr-clear { height: auto; min-height: 0; }
  .scr-clear .scr-bg::after, .scr-clear.flip .scr-bg::after { background: rgba(5,25,46,.72); }
  .clear-wrap { height: auto; padding: 110px 24px 36px; }
  .clear-bar { position: relative; height: auto; grid-template-columns: 1fr 1fr; }
  .cb-item { border-left: 0; border-top: 1px solid rgba(255,255,255,.12); padding: 18px; }
}

/* 2e. Năng lực thiết bị: 4 ảnh dọc liền nhau, chạm mép trên – dưới – phải */
.scr-equip { display: block; padding: 0; height: 100vh; height: 100svh; min-height: 640px; }
.equip-grid {
  position: relative; z-index: 2; height: 100%;
  display: grid; grid-template-columns: minmax(0, 42fr) minmax(0, 58fr);
}
.equip-text {
  align-self: center;
  padding: 92px clamp(28px, 4vw, 64px) 40px max(24px, calc((100vw - 1200px) / 2 + 24px));
}
.equip-strip { display: flex; height: 100%; }
.eq {
  position: relative; flex: 1 1 0; min-width: 0; margin: 0;
  background-size: cover; background-position: center;
  border-left: 2px solid rgba(255,255,255,.85);
  transition: flex-grow 1.1s var(--ease-soft), filter .6s ease;
}
.eq::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(5,25,46,.28) 0%, rgba(5,25,46,0) 22%, rgba(5,25,46,0) 70%, rgba(5,25,46,.35) 100%);
}
.equip-strip:hover .eq { filter: saturate(.75) brightness(.92); }
.equip-strip .eq:hover { flex-grow: 2.3; filter: none; }
@media (max-width: 900px) {
  .scr-equip { height: auto; min-height: 0; }
  .equip-grid { grid-template-columns: 1fr; }
  .equip-text { padding: 96px 24px 28px; }
  .equip-strip { height: 62vh; }
}
.clear-text { max-width: 580px; }
.clear-text .section-title, .equip-text .section-title { margin: 6px 0 16px; }
body[data-page="linh-vuc"] .clear-bar { padding-right: 250px; }
.scr-bg.photo-faint { opacity: .17; }

/* ==========================================================
   HỆ CHỮ THỐNG NHẤT CHO TOÀN BỘ TRANG (đặt cuối để thắng các lớp cũ)
   · Tiêu đề mục (h2)         : 42px · đậm 800 · navy / trắng trên nền tối
   · Tiêu đề trưng bày        : 49px · nét mảnh 400 + chữ nhấn đậm 800
     (THÔNG TIN LIÊN HỆ · DỰ ÁN TIÊU BIỂU · Cùng bạn kiến tạo…)
   · Đoạn dẫn (nội dung chính): 16.6px · dòng 1.76 · màu chữ chính
   · Chữ phụ (thẻ, chú thích) : 14.7px · dòng 1.6  · màu mờ
   · Nhãn nhỏ in hoa          : 12.8px · giãn chữ .12em
   ========================================================== */
:root {
  --fs-title: clamp(28px, 3.4vw, 42px);
  --fs-display: clamp(2rem, 3.4vw, 3.1rem);
  --fs-lead: 1.04rem;  --lh-lead: 1.76;
  --fs-small: .92rem;  --lh-small: 1.6;
  --fs-label: .8rem;
  --c-body: #1d2a33;
  --c-body-dark: rgba(255,255,255,.9);
  --c-small-dark: rgba(255,255,255,.8);
}
@media (max-height: 840px) and (min-width: 901px) {
  :root { --fs-title: clamp(26px, 2.8vw, 36px); --fs-display: clamp(1.8rem, 3vw, 2.6rem); --fs-lead: .96rem; --lh-lead: 1.68; --fs-small: .86rem; --lh-small: 1.55; }
}

/* tiêu đề mục */
.screen .section-title, .section .section-title, .about-copy .section-title, .scr-photo .section-title {
  font-size: var(--fs-title); font-weight: 800; line-height: 1.25;
}
/* tiêu đề trưng bày */
.lh-title, .scr-lh .lh-title, .feature-head h2, .bridge-title {
  font-size: var(--fs-display); line-height: 1.12; font-weight: 400;
}
.lh-title strong, .feature-head h2 strong, .bridge-title strong { font-weight: 800; }
.bridge-title { color: var(--navy-deep); }

/* đoạn dẫn */
.scr-lead, .screen .scr-lead, .scr-photo .scr-lead, .about-copy .about-lead, .msg-text p,
.section-lead, .section-head .section-lead, .bridge-sub, .clear-text .scr-lead {
  font-size: var(--fs-lead); line-height: var(--lh-lead);
}
.screen:not([data-dark]) .scr-lead, .about-copy .about-lead, .msg-text p,
.screen:not([data-dark]) .section-lead, .bridge-sub { color: var(--c-body); }
.screen[data-dark] .scr-lead, .screen[data-dark] .section-lead { color: var(--c-body-dark); }

/* chữ phụ */
.icon-card p, .cb-item p, .philo-item p, .msg-pillars span, .role-card p, .apply-steps span,
.prj-meta span, .mstone-txt span {
  font-size: var(--fs-small); line-height: var(--lh-small);
}
.screen:not([data-dark]) .icon-card p, .msg-pillars span, .apply-steps span,
.screen:not([data-dark]) .prj-meta span, .mstone-txt span { color: var(--muted); }
.screen[data-dark] .icon-card p, .cb-item p, .philo-item p, .role-card p,
.screen[data-dark] .prj-meta span { color: var(--c-small-dark); }

/* tiêu đề thẻ + nhãn nhỏ */
.icon-card h3, .cb-item h3 { font-size: var(--fs-label); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.philo-item h4, .role-card h3, .msg-pillars b, .apply-steps b { font-size: 1.02rem; font-weight: 700; }

/* màn Tổng thầu: dải 4 ý tự cao theo nội dung, phần chữ chiếm phần còn lại */
.scr-clear { display: flex; flex-direction: column; }
.scr-clear .clear-wrap { flex: 1 1 auto; height: auto; min-height: 0; }
.scr-clear .clear-bar { position: relative; height: auto; flex: none; }
.cb-item { padding: 22px clamp(16px, 1.8vw, 28px); }
@media (max-height: 840px) and (min-width: 901px) {
  :root { --fs-title: clamp(26px, 2.35vw, 32px); }
  .cb-item { padding: 16px 18px; }
  .scr-clear .clear-wrap { padding-top: 84px; }
}

/* ==========================================================
   Trang chủ · Lĩnh vực hoạt động: 2 lĩnh vực chia đôi màn hình
   ========================================================== */
.scr-duo { display: block; padding: 0; height: 100vh; height: 100svh; min-height: 640px; background: var(--navy-deep); }
.scr-duo::before, .scr-duo::after { display: none; }
.duo { display: flex; height: 100%; }
.duo-item {
  position: relative; flex: 1 1 0; min-width: 0; overflow: hidden; color: #fff;
  transition: flex-grow 1.1s var(--ease-soft);
}
.duo-item + .duo-item { border-left: 2px solid rgba(255,255,255,.85); }
.duo-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transition: transform 1.4s var(--ease-soft), filter .6s ease;
}
.duo-item::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(5,25,46,.45) 0%, rgba(5,25,46,0) 22%, rgba(5,25,46,0) 46%, rgba(5,25,46,.86) 100%);
  transition: background .6s ease;
}
.duo-body {
  position: absolute; z-index: 2; left: clamp(28px, 4.5vw, 72px); right: clamp(28px, 4vw, 64px); bottom: clamp(48px, 9vh, 96px);
  display: flex; flex-direction: column; align-items: flex-start; max-width: 520px;
}
.duo-title {
  display: block; margin: 14px 0 12px; font-size: var(--fs-display); line-height: 1.12; font-weight: 400;
  text-shadow: 0 2px 18px rgba(0,0,0,.35);
}
.duo-title strong { font-weight: 800; }
.duo-sub { font-size: var(--fs-lead); line-height: var(--lh-lead); color: rgba(255,255,255,.9); max-width: 40ch; }
.duo-more {
  display: inline-flex; align-items: center; gap: 12px; margin-top: 22px;
  font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  border-bottom: 1px solid rgba(255,255,255,.5); padding-bottom: 7px;
  transition: color .35s, border-color .35s, gap .35s;
}
.duo-more svg { width: 17px; height: 17px; }

/* rê chuột: nửa đang xem nở rộng, nửa kia lùi lại */
.duo:hover .duo-item { flex-grow: .8; }
.duo .duo-item:hover { flex-grow: 1.25; }
.duo-item:hover .duo-bg { transform: scale(1.04); }
.duo:hover .duo-item:not(:hover) .duo-bg { filter: saturate(.7) brightness(.8); }
.duo-item:hover .duo-more { color: var(--orange); border-color: var(--orange); gap: 18px; }

@media (max-width: 900px) {
  .scr-duo { height: auto; min-height: 0; }
  .duo { flex-direction: column; }
  .duo-item { height: 72vh; flex: none; }
  .duo-item + .duo-item { border-left: 0; border-top: 2px solid rgba(255,255,255,.85); }
}
/* lớp .duo cũ (lưới 2 cột có khe 24px) — màn chia đôi không dùng khe */
.scr-duo .duo { display: flex; gap: 0; }
/* ảnh bản vẽ rất sáng: phủ tối thêm để chữ trắng đọc rõ */
.duo-item::after {
  background: linear-gradient(180deg, rgba(5,25,46,.42) 0%, rgba(5,25,46,.05) 20%, rgba(5,25,46,.12) 40%, rgba(5,25,46,.9) 100%);
}
.duo-item:first-child::after {
  background: linear-gradient(180deg, rgba(5,25,46,.45) 0%, rgba(5,25,46,.12) 20%, rgba(5,25,46,.4) 45%, rgba(5,25,46,.94) 100%);
}

/* Tuyển dụng · màn thông điệp trên ảnh người (cùng kiểu chữ với "Tại sao chọn chúng tôi") */
.scr-msg .clear-wrap { padding-bottom: 60px; }
.scr-msg .clear-text { max-width: 560px; }
.statement {
  margin: 18px 0 0; color: #fff; font-weight: 500;
  font-size: clamp(1.12rem, 1.62vw, 1.46rem); line-height: 1.72;
  text-shadow: 0 1px 16px rgba(0,0,0,.3);
}
.scr-msg .why-rule { width: 84px; height: 3px; background: var(--orange); margin: 28px 0 0; }

/* ==========================================================
   Tuyển dụng · Bảng "Ứng tuyển cùng VICONS"
   ========================================================== */
.amodal .cmodal-box { width: min(860px, 100%); max-height: 92vh; }
.af-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; text-align: left; }
.af-grid .full { grid-column: 1 / -1; }
.af-field { display: flex; flex-direction: column; gap: 6px; }
.af-field > span { font-size: .78rem; letter-spacing: .06em; color: var(--navy-deep); }
.af-field > span b { font-weight: 700; }
.af-field > span i { color: var(--orange); font-style: normal; font-weight: 700; }
.af-field > span em { color: var(--muted); font-style: normal; letter-spacing: 0; }
.af-field input, .af-field select, .af-field textarea {
  width: 100%; padding: 13px 15px; border: 1px solid var(--line); border-radius: 2px;
  font-family: inherit; font-size: .95rem; color: var(--ink); background: #fbfcfd;
  transition: border-color .3s, box-shadow .3s;
}
.af-field textarea { resize: vertical; }
.af-field input:focus, .af-field select:focus, .af-field textarea:focus {
  outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(15,76,129,.12);
}
.af-field select {
  appearance: none; -webkit-appearance: none; padding-right: 38px;
  background-image: linear-gradient(45deg, transparent 50%, #5d6b75 50%), linear-gradient(135deg, #5d6b75 50%, transparent 50%);
  background-position: calc(100% - 20px) 55%, calc(100% - 15px) 55%; background-size: 5px 5px; background-repeat: no-repeat;
}
.af-pair { display: grid; grid-template-columns: .9fr 1.1fr; gap: 10px; }
.af-file {
  position: relative; display: flex; align-items: center; gap: 14px; padding: 14px 16px; cursor: pointer;
  border: 1.5px dashed #b9c6d3; background: #f6f9fc; transition: border-color .3s, background .3s;
}
.af-file:hover { border-color: var(--navy); background: #eef4fa; }
.af-file input { position: absolute; inset: 0; width: 100%; opacity: 0; cursor: pointer; }
.af-file b {
  display: inline-flex; align-items: center; padding: 10px 16px; background: var(--navy); color: #fff;
  font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 700;
}
.af-file small { color: var(--muted); font-size: .86rem; }
.af-consent { display: flex; gap: 10px; align-items: flex-start; text-align: left; margin-top: 16px; font-size: .86rem; color: var(--muted); cursor: pointer; }
.af-consent input { margin-top: 3px; accent-color: var(--navy); width: 16px; height: 16px; flex: none; }
.af-submit { margin-top: 22px; }
.af-field .bad, .af-file.bad { border-color: #e03131; }
.af-consent.bad { color: #c92a2a; }
.amodal .form-msg { margin: 14px 0 0; font-size: .92rem; opacity: 0; transition: opacity .3s; }
.amodal .form-msg.show { opacity: 1; }
.amodal .form-msg.ok { color: #1d8f4e; }
.amodal .form-msg.err { color: #c92a2a; }
.amodal .form-msg.wait { color: var(--muted); }
@media (max-width: 700px) {
  .af-grid, .af-pair { grid-template-columns: 1fr; }
}

/* ==========================================================
   Trang Hồ sơ năng lực: xem 32 trang + bảng thông tin trước khi tải
   ========================================================== */
body[data-page="ho-so"] { --tint: #e9eef4; --accent: rgba(15,76,129,.10); }
.hs-head {
  position: relative; padding: 150px 0 46px;
  background: linear-gradient(135deg, #0a2f57 0%, #0f4c81 60%, #1560a8 100%); color: #fff;
}
.hs-head-in { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.hs-title { font-size: var(--fs-display); line-height: 1.12; font-weight: 400; margin: 12px 0 10px; color: #fff; }
.hs-title strong { font-weight: 800; }
.hs-sub { margin: 0; color: rgba(255,255,255,.8); font-size: var(--fs-lead); }
.hs-view { background: var(--tint); padding: 48px 0 70px; }
.hs-pages { width: min(1100px, calc(100% - 32px)); margin: 0 auto; display: grid; gap: 26px; }
.hs-page { position: relative; margin: 0; background: #fff; box-shadow: 0 24px 60px -34px rgba(5,25,46,.55); }
.hs-page img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; }
.hs-page figcaption {
  position: absolute; right: 12px; bottom: 10px; padding: 3px 9px;
  font-size: .72rem; letter-spacing: .06em; color: #fff; background: rgba(5,25,46,.55); border-radius: 2px;
}
.hs-end { text-align: center; margin-top: 44px; }
.hs-end p { margin: 0 0 16px; color: var(--c-body); font-size: var(--fs-lead); }
.hs-dl svg, .hs-end .btn svg, .af-submit svg { width: 18px; height: 18px; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.af-grid .af-consent.full { grid-column: 1 / -1; margin-top: 4px; }
body[data-page="ho-so"] .profile-fab { font-family: inherit; border: 0; cursor: pointer; }
@media (max-width: 700px) {
  .hs-head { padding: 118px 0 34px; }
  .hs-pages { gap: 14px; width: calc(100% - 20px); }
  .hs-page figcaption { font-size: .66rem; }
}

/* Hạn chế tải ảnh: không kéo ảnh, không hiện menu "Lưu ảnh" khi nhấn giữ trên điện thoại */
img { -webkit-user-drag: none; user-select: none; -webkit-touch-callout: none; }
.hs-page, .fp, .hero-slide, .duo-item, .eq, .bridge-photo, .lh-photo { -webkit-touch-callout: none; }