/* ============================================================
   HIGRO — main.css
   Design tokens + base + layout + components (concept "Dark Neon Growth")
   ============================================================ */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
  /* Màu thương hiệu (Guideline HIGRO) */
  --charcoal: #0E0F12;          /* Deep Charcoal — nền chính */
  --charcoal-2: #14161B;        /* nền section phụ / card */
  --charcoal-3: #1B1E25;        /* card hover / viền mềm */
  --green: #B8FF4F;             /* Growth Green — điểm nhấn chính */
  --green-grad-from: #C9FA4D;   /* gradient logo — điểm bắt đầu */
  --green-grad-to: #6FEB13;     /* gradient logo — điểm kết thúc */
  --green-deep: #3F7A00;        /* xanh đậm dùng trên nền sáng (section GROW) */
  --gray: #7C828D;              /* Tech Gray — chữ phụ */
  --gray-soft: #A7ACB5;         /* chữ phụ sáng hơn trên nền tối */
  --white: #F7F8FA;             /* Clean White — chữ chính */
  --line: rgba(247, 248, 250, 0.10);   /* viền trên nền tối */
  --line-strong: rgba(247, 248, 250, 0.18);
  --danger: #FF7A7A;

  /* Font */
  --font-body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Montserrat", "Be Vietnam Pro", system-ui, sans-serif;

  /* Nhịp motion (motion-concept mục 3.0) */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-micro: 200ms;
  --dur-reveal: 650ms;
  --dur-big: 900ms;

  /* Bố cục */
  --wrap: 1200px;
  --pad-x: clamp(20px, 5vw, 48px);
  --radius: 16px;
  --header-h: 76px;
}

/* ---------- 2. BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html:focus-within { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--charcoal);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.16; margin: 0; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }
::selection { background: var(--green); color: var(--charcoal); }

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: var(--pad-x); padding-right: var(--pad-x); }
.section { padding: clamp(76px, 10vw, 128px) 0; position: relative; }
.section--alt { background: var(--charcoal-2); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--green);
}
.eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--green); }
.section-head { max-width: 820px; margin-bottom: clamp(38px, 5vw, 60px); }
.section-head h2 {
  font-size: clamp(30px, 4.4vw, 48px); font-weight: 800;
  letter-spacing: -0.01em; margin: 16px 0 14px;
}
.section-head .sub { color: var(--gray-soft); font-size: clamp(16px, 1.6vw, 18.5px); max-width: 700px; }
.grad-text {
  background: linear-gradient(180deg, var(--green-grad-from), var(--green-grad-to));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- 3. BUTTONS ---------- */
.btn {
  --btn-bg: var(--green); --btn-fg: var(--charcoal);
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 700; font-size: 16px; line-height: 1.25;
  padding: 15px 26px; border: 0; border-radius: 999px;
  text-decoration: none; position: relative; white-space: nowrap;
  transition: box-shadow var(--dur-micro) var(--ease-out), background var(--dur-micro) var(--ease-out);
  will-change: transform;
}
.btn:hover { box-shadow: 0 0 0 1px rgba(184, 255, 79, 0.35), 0 10px 34px rgba(184, 255, 79, 0.22); }
.btn .arr { display: inline-block; font-weight: 800; transition: transform var(--dur-micro) var(--ease-out); }
.btn:hover .arr, .btn:focus-visible .arr { transform: translate(3px, -3px); }
.btn--ghost {
  --btn-bg: transparent; --btn-fg: var(--white);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}
.btn--ghost:hover { box-shadow: inset 0 0 0 1px var(--green), 0 8px 26px rgba(0, 0, 0, 0.35); color: var(--green); }
.btn--dark { --btn-bg: var(--charcoal); --btn-fg: var(--green); }
.btn--dark:hover { box-shadow: 0 10px 30px rgba(14, 15, 18, 0.35); }
.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--green); font-weight: 600; text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1.5px; background-repeat: no-repeat; background-position: 0 100%;
  transition: background-size var(--dur-micro) var(--ease-out);
  padding-bottom: 2px;
}
.link-arrow:hover, .link-arrow:focus-visible { background-size: 100% 1.5px; }

/* ---------- 4. HEADER ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--header-h);
  display: flex; align-items: center;
  transition: background 300ms var(--ease-out), box-shadow 300ms var(--ease-out), height 300ms var(--ease-out);
}
.site-header.scrolled {
  height: 64px;
  background: rgba(14, 15, 18, 0.82);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  box-shadow: inset 0 -1px 0 var(--line);
}
.header-in { display: flex; align-items: center; gap: 34px; width: 100%; }
.brand { display: inline-flex; align-items: center; flex: none; }
.brand img { height: 38px; width: auto; }
.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 30px; }
.main-nav a {
  text-decoration: none; font-weight: 500; font-size: 15.5px; color: var(--gray-soft);
  position: relative; padding: 6px 0;
  transition: color var(--dur-micro) var(--ease-out);
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--green); transform: scaleX(0); transform-origin: left;
  transition: transform 250ms var(--ease-out);
}
.main-nav a:hover, .main-nav a:focus-visible { color: var(--green); }
.main-nav a:hover::after, .main-nav a:focus-visible::after { transform: scaleX(1); }
.header-cta { flex: none; padding: 12px 22px; font-size: 15px; }
.burger {
  display: none; margin-left: auto; flex: none;
  width: 46px; height: 46px; border: 1px solid var(--line-strong); border-radius: 12px;
  background: transparent; color: var(--white);
  align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.burger span { display: block; width: 20px; height: 2px; background: currentColor; transition: transform var(--dur-micro) var(--ease-out), opacity var(--dur-micro); }
body.menu-open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.menu-open .burger span:nth-child(2) { opacity: 0; }
body.menu-open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  position: fixed; inset: 0; z-index: 99; background: rgba(14, 15, 18, 0.97);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  display: flex; flex-direction: column; justify-content: center;
  padding: calc(var(--header-h) + 16px) var(--pad-x) 40px;
  opacity: 0; visibility: hidden; transition: opacity 300ms var(--ease-out), visibility 300ms;
}
body.menu-open .mobile-menu { opacity: 1; visibility: visible; }
.mobile-menu a.mnav {
  font-family: var(--font-display); font-weight: 800; font-size: clamp(30px, 8vw, 42px);
  text-decoration: none; padding: 10px 0; border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
}
.mobile-menu a.mnav small { font-family: var(--font-body); font-size: 13px; color: var(--gray); font-weight: 500; }
.mobile-menu .btn { margin-top: 30px; justify-content: center; }
body.menu-open { overflow: hidden; }

/* ---------- 5. HERO ---------- */
.hero {
  position: relative; padding: calc(var(--header-h) + clamp(48px, 8vh, 96px)) 0 clamp(56px, 8vh, 88px);
  overflow: hidden;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(184, 255, 79, 0.10), transparent 60%),
    radial-gradient(700px 500px at -10% 110%, rgba(111, 235, 19, 0.06), transparent 60%),
    var(--charcoal);
}
.hero-grid-bg {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image: linear-gradient(rgba(247, 248, 250, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 248, 250, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(75% 65% at 50% 38%, #000 30%, transparent 100%);
  mask-image: radial-gradient(75% 65% at 50% 38%, #000 30%, transparent 100%);
}
.hero-growth { position: absolute; right: -4%; top: 6%; width: min(620px, 60vw); opacity: 0.55; pointer-events: none; }
.hero-in { position: relative; }
.hero h1 {
  font-weight: 900; text-transform: uppercase;
  font-size: clamp(42px, 8.2vw, 96px); letter-spacing: -0.015em; line-height: 1.04;
  margin: 22px 0 24px;
}
.hero .sub { max-width: 680px; color: var(--gray-soft); font-size: clamp(16.5px, 1.8vw, 19.5px); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 26px; margin-top: 34px; }
.hero-micro { margin-top: 16px; color: var(--gray); font-size: 14px; }
.hero-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 38px; }
.hero-chips a {
  text-decoration: none; font-weight: 600; font-size: 14.5px;
  border: 1px solid var(--line-strong); border-radius: 999px; padding: 10px 18px;
  display: inline-flex; gap: 8px; align-items: center;
  transition: border-color var(--dur-micro), color var(--dur-micro), transform var(--dur-micro) var(--ease-out);
}
.hero-chips a:hover { border-color: var(--green); color: var(--green); transform: translateY(-2px); }
.hero-proof {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line);
  color: var(--gray); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 14px;
}
.hero-proof b { color: var(--gray-soft); font-weight: 600; }
.mini-case {
  position: absolute; right: 0; bottom: 6px; width: 300px;
  background: var(--charcoal-2); border: 1px solid var(--line-strong); border-radius: var(--radius);
  padding: 18px; text-decoration: none; display: block;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45);
}
.mini-case .mc-tag { font-size: 11.5px; letter-spacing: 0.16em; font-weight: 700; color: var(--green); text-transform: uppercase; }
.mini-case h3 { font-size: 18px; margin: 8px 0 6px; }
.mini-case p { font-size: 13.5px; color: var(--gray-soft); line-height: 1.55; }
.mini-case .link-arrow { margin-top: 12px; font-size: 14px; }
.scroll-hint {
  display: flex; align-items: center; gap: 12px; margin-top: 52px;
  color: var(--gray); font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase;
}
.scroll-hint .track { width: 1px; height: 44px; background: var(--line-strong); position: relative; overflow: hidden; }
.scroll-hint .track::after {
  content: ""; position: absolute; left: 0; top: -40%; width: 100%; height: 40%;
  background: var(--green); animation: scrollDot 2s var(--ease-out) infinite;
}
@keyframes scrollDot { 0% { top: -40%; } 60%, 100% { top: 110%; } }

/* ---------- 6. MARQUEE ---------- */
.marquee {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow: hidden; padding: 18px 0; background: var(--charcoal);
}
.marquee-track { display: flex; width: max-content; animation: marqueeMove 36s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--font-display); font-weight: 700; font-size: 15px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--gray-soft);
  padding-right: 18px; white-space: nowrap;
}
.marquee-track span i { color: var(--green); font-style: normal; padding-right: 18px; }
@keyframes marqueeMove { to { transform: translateX(-50%); } }

/* ---------- 7. ĐỊNH NGHĨA / THẺ ---------- */
.define-lead {
  font-size: clamp(19px, 2.4vw, 25px); line-height: 1.6; font-weight: 500;
  max-width: 900px; margin-bottom: 44px;
}
.define-lead strong { color: var(--green); font-weight: 700; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--charcoal-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(22px, 3vw, 32px); position: relative; overflow: hidden;
  transition: transform var(--dur-micro) var(--ease-out), border-color var(--dur-micro), box-shadow var(--dur-micro);
}
.card:hover { transform: translateY(-4px); border-color: rgba(184, 255, 79, 0.45); box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35); }
.card .card-num {
  position: absolute; top: 6px; right: 16px; font-family: var(--font-display);
  font-weight: 900; font-size: 64px; color: rgba(247, 248, 250, 0.05); line-height: 1;
  transition: transform var(--dur-reveal) var(--ease-out);
}
.card:hover .card-num { transform: translateX(-6px); }
.card h3 { font-size: 21px; font-weight: 800; margin-bottom: 10px; }
.card p { color: var(--gray-soft); font-size: 15.5px; }
.card .tagline { font-family: var(--font-display); font-weight: 900; font-size: 30px; letter-spacing: 0.02em; }
.card ul.ticks { margin-top: 14px; display: grid; gap: 8px; }
.card ul.ticks li { color: var(--gray-soft); font-size: 15px; padding-left: 24px; position: relative; }
.card ul.ticks li::before { content: "↗"; position: absolute; left: 0; color: var(--green); font-weight: 700; }
.card .card-foot { margin-top: 18px; }

/* Thẻ ngành */
.ind-card .ind-name { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.ind-card .ind-name .go { color: var(--green); font-weight: 800; font-size: 20px; transition: transform var(--dur-micro) var(--ease-out); }
.ind-card:hover .ind-name .go { transform: translate(3px, -3px); }
.ind-card .lbl { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gray); font-weight: 700; margin: 16px 0 6px; }
.ind-card .proof { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line-strong); font-size: 14px; color: var(--gray-soft); }
.ind-card .proof b { color: var(--white); }
a.card { text-decoration: none; display: block; color: inherit; }

/* ---------- 8. DANH SÁCH DỊCH VỤ TƯƠNG TÁC ---------- */
.svc-layout { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(28px, 4vw, 56px); align-items: start; }
.svc-list { border-top: 1px solid var(--line); }
.svc-row {
  position: relative; display: block; width: 100%; text-align: left;
  background: transparent; border: 0; border-bottom: 1px solid var(--line);
  padding: 20px 14px; color: var(--white); overflow: hidden; isolation: isolate;
}
.svc-row::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, var(--green-grad-from), var(--green-grad-to));
  transform: scaleY(0); transform-origin: bottom;
  transition: transform 350ms var(--ease-out);
}
.svc-row .svc-line { display: flex; align-items: center; gap: 16px; }
.svc-row .svc-no { font-family: var(--font-display); font-weight: 700; font-size: 13px; color: var(--gray); letter-spacing: 0.1em; transition: color var(--dur-micro); }
.svc-row .svc-name { font-family: var(--font-display); font-weight: 800; font-size: clamp(20px, 2.6vw, 30px); line-height: 1.2; transition: color var(--dur-micro); }
.svc-row .svc-arr { margin-left: auto; font-size: 22px; font-weight: 800; color: var(--green); transition: transform 350ms var(--ease-out), color var(--dur-micro); }
.svc-row .svc-desc-m { display: none; }
.svc-row:hover::before, .svc-row:focus-visible::before, .svc-row.active::before { transform: scaleY(1); }
.svc-row:hover .svc-name, .svc-row:focus-visible .svc-name, .svc-row.active .svc-name { color: var(--charcoal); }
.svc-row:hover .svc-no, .svc-row:focus-visible .svc-no, .svc-row.active .svc-no { color: rgba(14, 15, 18, 0.65); }
.svc-row:hover .svc-arr, .svc-row:focus-visible .svc-arr, .svc-row.active .svc-arr { color: var(--charcoal); transform: rotate(45deg); }
.svc-panel {
  position: sticky; top: calc(var(--header-h) + 20px);
  background: var(--charcoal-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(24px, 3vw, 34px); min-height: 250px;
}
.svc-panel .sp-no { font-family: var(--font-display); font-weight: 900; font-size: 15px; color: var(--green); letter-spacing: 0.14em; }
.svc-panel h3 { font-size: 24px; margin: 10px 0 12px; }
.svc-panel p { color: var(--gray-soft); }
.svc-panel .sp-inner { transition: opacity 250ms var(--ease-out), transform 250ms var(--ease-out); }
.svc-panel.fading .sp-inner { opacity: 0; transform: translateY(8px); }

/* ---------- 9. DỊCH VỤ THEO NGÀNH (blocks) ---------- */
.ind-block {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(26px, 4vw, 54px);
  padding: clamp(30px, 4vw, 46px) 0; border-top: 1px solid var(--line); align-items: start;
}
.ind-block:last-child { border-bottom: 1px solid var(--line); }
.ind-block h3 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; }
.ind-block .ind-pos { color: var(--gray-soft); margin-top: 12px; max-width: 420px; }
.ind-block ol.prio { counter-reset: pr; display: grid; gap: 14px; }
.ind-block ol.prio li {
  counter-increment: pr; position: relative; padding-left: 52px; color: var(--gray-soft);
}
.ind-block ol.prio li::before {
  content: counter(pr, decimal-leading-zero);
  position: absolute; left: 0; top: 0; font-family: var(--font-display); font-weight: 800;
  color: var(--green); font-size: 15px; letter-spacing: 0.06em;
}
.ind-block ol.prio li b { color: var(--white); display: block; font-family: var(--font-display); font-size: 17px; margin-bottom: 2px; }
.ind-block .ind-links { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 14px 26px; align-items: center; }

/* ---------- 10. QUY TRÌNH GROW ---------- */
.grow-section {
  background: var(--charcoal);
  transition: background 800ms var(--ease-out);
}
.grow-section .section-head h2, .grow-section .section-head .sub { transition: color 600ms var(--ease-out); }
.grow-section.active { background: linear-gradient(180deg, var(--green-grad-from), var(--green-grad-to)); }
.grow-section.active .section-head h2 { color: var(--charcoal); }
.grow-section.active .section-head .sub { color: rgba(14, 15, 18, 0.78); }
.grow-section.active .eyebrow { color: var(--green-deep); }
.grow-section.active .eyebrow::before { background: var(--green-deep); }
.grow-wrap { position: relative; }
.grow-line { width: 100%; height: 54px; display: block; margin-bottom: 8px; }
.grow-line path { stroke: rgba(247, 248, 250, 0.18); transition: stroke 600ms var(--ease-out); }
.grow-line .gl-draw { stroke: var(--green); }
.grow-section.active .grow-line path { stroke: rgba(14, 15, 18, 0.35); }
.grow-section.active .grow-line .gl-draw { stroke: var(--charcoal); }
.grow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.grow-step {
  border-top: 2px solid var(--line-strong); padding-top: 20px;
  transition: border-color 600ms var(--ease-out);
}
.grow-section.active .grow-step { border-color: rgba(14, 15, 18, 0.4); }
.grow-step .g-letter {
  font-family: var(--font-display); font-weight: 900; font-size: 54px; line-height: 1;
  color: transparent; -webkit-text-stroke: 1.5px var(--gray);
  transition: color 600ms var(--ease-out), -webkit-text-stroke-color 600ms;
  display: block;
}
.grow-section.active .g-letter { color: var(--charcoal); -webkit-text-stroke-color: var(--charcoal); }
.grow-step h3 { font-size: 19px; margin: 14px 0 4px; transition: color 600ms; }
.grow-section.active .grow-step h3 { color: var(--charcoal); }
.grow-step .g-en { font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gray); font-weight: 700; transition: color 600ms; }
.grow-section.active .g-en { color: rgba(14, 15, 18, 0.65); }
.grow-step p { color: var(--gray-soft); font-size: 15px; margin-top: 10px; transition: color 600ms; }
.grow-section.active .grow-step p { color: rgba(14, 15, 18, 0.82); }
.grow-cta { margin-top: 42px; }

/* ---------- 11. SHOWCASE ---------- */
.show-layout { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 4vw, 56px); align-items: start; }
.case-rows { border-top: 1px solid var(--line); }
.case-row {
  display: block; width: 100%; text-align: left; background: transparent; border: 0;
  border-bottom: 1px solid var(--line); padding: 26px 10px; color: var(--white);
  transition: padding-left 300ms var(--ease-out);
}
.case-row .cr-top { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.case-row .cr-ind {
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--charcoal); background: var(--green); border-radius: 999px; padding: 4px 11px;
}
.case-row .cr-loc { color: var(--gray); font-size: 13.5px; }
.case-row h3 {
  font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin: 10px 0 8px;
  transition: color var(--dur-micro), transform 300ms var(--ease-out);
}
.case-row p { color: var(--gray-soft); font-size: 15.5px; max-width: 520px; }
.case-row .cr-scope { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.case-row .cr-scope span {
  font-size: 12.5px; border: 1px solid var(--line-strong); color: var(--gray-soft);
  padding: 5px 11px; border-radius: 999px;
}
.case-row:hover h3, .case-row:focus-visible h3, .case-row.active h3 { color: var(--green); transform: translateX(8px); }
.case-preview { position: sticky; top: calc(var(--header-h) + 20px); }
.case-visual {
  border-radius: var(--radius); overflow: hidden; position: relative;
  aspect-ratio: 4 / 3; border: 1px solid var(--line-strong);
  transition: opacity 300ms var(--ease-out), transform 300ms var(--ease-out);
}
.case-visual.fading { opacity: 0; transform: scale(0.985); }
.cv-art { position: absolute; inset: 0; padding: 26px; display: flex; flex-direction: column; }
.cv-art .cv-kicker { font-size: 12px; letter-spacing: 0.18em; font-weight: 700; text-transform: uppercase; opacity: 0.85; }
.cv-art .cv-big {
  font-family: var(--font-display); font-weight: 900; text-transform: uppercase;
  font-size: clamp(30px, 3.6vw, 46px); line-height: 1.08; margin-top: auto;
}
.cv-art .cv-line { position: absolute; left: 0; right: 0; bottom: 30%; height: 64px; opacity: 0.5; }
.cv-art .cv-note { margin-top: 12px; font-size: 13px; opacity: 0.85; max-width: 340px; }
.cv-fnb { background: linear-gradient(150deg, #233014 0%, #12150c 58%, #0E0F12 100%); color: var(--white); }
.cv-fnb .cv-kicker { color: var(--green); }
.cv-edu { background: linear-gradient(150deg, #12312B 0%, #0d1a17 58%, #0E0F12 100%); color: var(--white); }
.cv-edu .cv-kicker { color: #8FE3C0; }
.case-visual .cv-badge {
  position: absolute; top: 16px; right: 16px; z-index: 2;
  background: rgba(14, 15, 18, 0.72); color: var(--green);
  border: 1px solid rgba(184, 255, 79, 0.4); border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.08em; padding: 7px 13px;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.case-mobile-visual { display: none; }

/* ---------- 12. TIN TƯỞNG ---------- */
.pillar-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 18px; }
.commit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.commit-card { border-radius: var(--radius); padding: clamp(24px, 3vw, 34px); }
.commit-yes { background: linear-gradient(160deg, rgba(184, 255, 79, 0.13), rgba(184, 255, 79, 0.04)); border: 1px solid rgba(184, 255, 79, 0.35); }
.commit-no { background: var(--charcoal-2); border: 1px solid var(--line); }
.commit-card h3 { font-size: 20px; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.commit-card ul { display: grid; gap: 12px; }
.commit-card li { padding-left: 28px; position: relative; color: var(--gray-soft); font-size: 15.5px; }
.commit-yes li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 800; }
.commit-no li::before { content: "✕"; position: absolute; left: 0; color: var(--danger); font-weight: 800; }
.commit-no li { color: var(--gray-soft); }

/* ---------- 13. FOUNDER ---------- */
.founder-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(30px, 5vw, 64px); align-items: center; }
.founder-visual { display: flex; justify-content: center; }
.founder-mono {
  width: min(300px, 70vw); aspect-ratio: 1; border-radius: 50%;
  border: 1.5px solid rgba(184, 255, 79, 0.4);
  display: flex; align-items: center; justify-content: center; position: relative;
  background: radial-gradient(circle at 32% 28%, rgba(184, 255, 79, 0.16), transparent 62%);
}
.founder-mono .fm-letter { font-family: var(--font-display); font-weight: 900; font-size: 128px; line-height: 1; }
.founder-mono .fm-ring {
  position: absolute; inset: -14px; border-radius: 50%;
  border: 1px dashed rgba(247, 248, 250, 0.16);
}
.founder-mono .fm-tag {
  position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
  background: var(--green); color: var(--charcoal); font-weight: 700; font-size: 12.5px;
  letter-spacing: 0.1em; text-transform: uppercase; padding: 6px 14px; border-radius: 999px; white-space: nowrap;
}
.founder-quote { font-size: clamp(18px, 2.2vw, 22.5px); line-height: 1.65; color: var(--white); }
.founder-quote::before { content: "“"; display: block; font-family: var(--font-display); font-size: 54px; line-height: 0.6; color: var(--green); margin-bottom: 18px; }
.founder-role { margin-top: 18px; color: var(--gray-soft); }
.founder-role b { color: var(--white); }

/* ---------- 14. AUDIT ---------- */
.audit-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 40px; }
.audit-card .ac-no {
  font-family: var(--font-display); font-weight: 900; font-size: 40px; line-height: 1;
  background: linear-gradient(180deg, var(--green-grad-from), var(--green-grad-to));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
  display: block; margin-bottom: 12px;
}
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: tl; }
.timeline li { border-top: 2px solid var(--line-strong); padding-top: 16px; color: var(--gray-soft); font-size: 15px; }
.timeline li b { display: block; color: var(--white); font-family: var(--font-display); font-size: 16.5px; margin-bottom: 4px; }
.timeline li .tl-no { color: var(--green); font-weight: 800; font-size: 13px; letter-spacing: 0.12em; display: block; margin-bottom: 8px; }

/* ---------- 15. BLOG / TÀI NGUYÊN ---------- */
.topic-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.topic-card .tc-ind { font-size: 12px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--green); }
.topic-card h3 { font-size: 18.5px; margin-top: 10px; }

/* ---------- 16. FAQ ---------- */
.faq-list { max-width: 860px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 18px;
  background: transparent; border: 0; color: var(--white); text-align: left;
  font-family: var(--font-display); font-weight: 700; font-size: clamp(16.5px, 2vw, 19px);
  padding: 22px 6px; min-height: 44px;
}
.faq-q .fx {
  flex: none; width: 34px; height: 34px; border: 1px solid var(--line-strong); border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center; font-size: 18px; color: var(--green);
  transition: transform 300ms var(--ease-out);
}
.faq-item.open .faq-q .fx { transform: rotate(45deg); }
.faq-a { overflow: hidden; max-height: 0; transition: max-height 300ms var(--ease-out); }
.faq-a-in { padding: 0 6px 24px; color: var(--gray-soft); max-width: 760px; }

/* ---------- 17. CTA CUỐI ---------- */
.final-cta { overflow: hidden; }
.final-cta .fc-in { position: relative; text-align: center; max-width: 860px; margin: 0 auto; }
.final-cta h2 { font-size: clamp(32px, 5.4vw, 58px); font-weight: 900; text-transform: uppercase; line-height: 1.1; }
.final-cta .sub { color: var(--gray-soft); margin: 20px auto 0; max-width: 620px; font-size: clamp(16px, 1.8vw, 19px); }
.final-cta .fc-points { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; margin-top: 26px; color: var(--gray-soft); font-size: 14.5px; }
.final-cta .fc-points b { color: var(--white); }
.final-cta .fc-actions { margin-top: 36px; display: flex; flex-direction: column; align-items: center; gap: 18px; }
.o-arrow { width: 118px; height: 118px; margin: 0 auto 30px; display: block; }
.o-arrow .o-arrow-head { transform-origin: 60px 60px; }

/* ---------- 18. FOOTER ---------- */
.site-footer { border-top: 1px solid var(--line); background: #0A0B0E; overflow: hidden; }
.footer-main {
  display: grid; grid-template-columns: 1.3fr 0.7fr 0.7fr 0.9fr; gap: 36px;
  padding: 64px 0 48px;
}
.footer-brand img { height: 46px; width: auto; }
.footer-brand .fb-pos { margin-top: 18px; color: var(--gray-soft); max-width: 300px; font-size: 15px; }
.footer-brand .fb-slogan { margin-top: 8px; color: var(--white); font-weight: 600; font-size: 15px; }
.footer-col h4 { font-size: 13px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gray); margin-bottom: 18px; }
.footer-col ul { display: grid; gap: 11px; }
.footer-col a { text-decoration: none; color: var(--gray-soft); font-size: 15px; transition: color var(--dur-micro); }
.footer-col a:hover { color: var(--green); }
.footer-col li, .footer-col p { color: var(--gray-soft); font-size: 15px; }
.footer-bottom {
  border-top: 1px solid var(--line); padding: 20px 0 26px;
  display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: center; justify-content: space-between;
  color: var(--gray); font-size: 13.5px;
}
.footer-bottom a { color: var(--gray-soft); text-decoration: none; }
.footer-bottom a:hover { color: var(--green); }
.to-top {
  display: inline-flex; align-items: center; gap: 8px; background: transparent; border: 0;
  color: var(--gray-soft); font-weight: 600; font-size: 13.5px; padding: 8px 4px;
}
.to-top .arr { display: inline-block; transition: transform var(--dur-micro) var(--ease-spring); color: var(--green); font-weight: 800; }
.to-top:hover .arr { transform: translateY(-4px); }
.footer-marquee { overflow: hidden; padding: 6px 0 20px; pointer-events: none; }
.footer-marquee .fm-track { display: flex; width: max-content; animation: marqueeMove 60s linear infinite; }
.footer-marquee span {
  font-family: var(--font-display); font-weight: 900; font-size: clamp(56px, 9vw, 110px);
  line-height: 1; letter-spacing: 0.04em; text-transform: uppercase; white-space: nowrap;
  color: transparent; -webkit-text-stroke: 1px rgba(247, 248, 250, 0.13); padding-right: 48px;
}

/* ---------- 19. TRANG LIÊN HỆ / FORM ---------- */
.page-hero { padding: calc(var(--header-h) + clamp(44px, 7vh, 84px)) 0 clamp(40px, 6vh, 64px); position: relative; overflow: hidden; }
.page-hero h1 { font-size: clamp(32px, 5vw, 54px); font-weight: 900; line-height: 1.14; max-width: 860px; margin: 18px 0 16px; }
.page-hero .sub { color: var(--gray-soft); max-width: 640px; font-size: clamp(16px, 1.8vw, 19px); }
.form-shell {
  background: var(--charcoal-2); border: 1px solid var(--line); border-radius: 20px;
  padding: clamp(24px, 4vw, 44px);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-weight: 600; font-size: 15px; }
.field label .req { color: var(--green); }
.field .hint { font-size: 13px; color: var(--gray); margin-top: -4px; }
.field input, .field select, .field textarea {
  background: var(--charcoal); border: 1px solid var(--line-strong); border-radius: 12px;
  color: var(--white); font: inherit; font-size: 16px; padding: 13px 15px; width: 100%;
  transition: border-color var(--dur-micro), box-shadow var(--dur-micro);
  min-height: 48px;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(184, 255, 79, 0.18);
}
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--danger); }
.field .err { display: none; color: var(--danger); font-size: 13.5px; }
.field.invalid .err { display: block; }
.field select option { background: var(--charcoal-2); color: var(--white); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.consent { display: flex; gap: 12px; align-items: flex-start; color: var(--gray-soft); font-size: 14.5px; }
.consent input { width: 19px; height: 19px; margin-top: 3px; accent-color: var(--green); flex: none; }
.form-status { display: none; border-radius: 12px; padding: 16px 18px; font-size: 15px; margin-top: 20px; }
.form-status.show { display: block; }
.form-status.err { background: rgba(255, 122, 122, 0.1); border: 1px solid rgba(255, 122, 122, 0.45); color: #FFD9D9; }
.form-status.ok { background: rgba(184, 255, 79, 0.1); border: 1px solid rgba(184, 255, 79, 0.45); color: var(--white); }
.form-status.ok h3 { color: var(--green); margin-bottom: 6px; font-size: 18px; }
.btn.sending { opacity: 0.75; pointer-events: none; }
.btn.shake { animation: shakeX 200ms ease-in-out 2; }
@keyframes shakeX { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }
.steps-list { counter-reset: st; display: grid; gap: 0; }
.steps-list li {
  counter-increment: st; display: grid; grid-template-columns: 54px 1fr; gap: 16px;
  padding: 20px 0; border-bottom: 1px solid var(--line);
}
.steps-list li:first-child { padding-top: 4px; }
.steps-list li::before {
  content: counter(st, decimal-leading-zero);
  font-family: var(--font-display); font-weight: 800; color: var(--green); font-size: 18px;
}
.steps-list li b { display: block; font-family: var(--font-display); font-size: 17.5px; margin-bottom: 3px; }
.steps-list li p { color: var(--gray-soft); font-size: 15px; }

/* ---------- 20. 404 ---------- */
.notfound { min-height: 100svh; display: flex; align-items: center; padding: calc(var(--header-h) + 30px) 0 70px; }
.notfound .nf-code { font-family: var(--font-display); font-weight: 900; font-size: clamp(84px, 16vw, 170px); line-height: 1; }
.notfound h1 { font-size: clamp(26px, 4vw, 40px); margin: 14px 0 12px; }
.notfound p { color: var(--gray-soft); max-width: 520px; }
.notfound .hero-actions { margin-top: 30px; }

/* ---------- 21. TRANG CON (VÒNG 2A) ---------- */
/* Breadcrumb */
.breadcrumb { margin-bottom: 6px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--gray); }
.breadcrumb li + li::before { content: "/"; color: var(--gray); opacity: 0.7; }
.breadcrumb a { color: var(--gray-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--green); }
.breadcrumb [aria-current] { color: var(--white); font-weight: 600; }

/* Đoạn trả lời trực diện ngay dưới H1 (trang ngành / dịch vụ) */
.direct-answer {
  border-left: 3px solid var(--green);
  background: var(--charcoal-2);
  border-radius: 0 12px 12px 0;
  padding: 18px 22px;
  font-size: clamp(16.5px, 1.8vw, 19px);
  line-height: 1.6;
  max-width: 880px;
  margin: 4px 0 20px;
}
.page-hero .microcopy { color: var(--gray); font-size: 14px; margin-top: 14px; }

/* Danh sách tự nhận diện (ô vuông trống) */
.check-list { display: grid; gap: 14px; max-width: 880px; }
.check-list li {
  position: relative; padding-left: 36px; color: var(--gray-soft); font-size: 16px;
}
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 4px;
  width: 17px; height: 17px; border: 1.5px solid var(--gray);
  border-radius: 4px;
}
/* Danh sách mục tiêu (dấu tick) */
.tick-list { display: grid; gap: 13px; }
.tick-list li { position: relative; padding-left: 32px; color: var(--gray-soft); font-size: 16px; }
.tick-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--green); font-weight: 800; font-size: 16px;
}
.tick-list li b, .check-list li b { color: var(--white); }

/* Nhãn nhỏ trong thẻ chi tiết */
.lbl-sm {
  font-size: 12px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--green); margin: 16px 0 5px;
}
.lbl-sm:first-child { margin-top: 0; }
.card .lbl-sm + p, .card .lbl-sm + ul { color: var(--gray-soft); font-size: 15.5px; }
.dot-list { display: grid; gap: 5px; }
.dot-list li { position: relative; padding-left: 16px; color: var(--gray-soft); font-size: 15.5px; }
.dot-list li::before { content: "·"; position: absolute; left: 2px; color: var(--green); font-weight: 800; }

/* Bảng dữ liệu (phạm vi, snapshot, ma trận) */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.data-table { width: 100%; border-collapse: collapse; min-width: 640px; background: var(--charcoal-2); }
.data-table th, .data-table td {
  text-align: left; padding: 14px 18px; font-size: 15px; line-height: 1.55;
  border-bottom: 1px solid var(--line); vertical-align: top;
}
.data-table thead th {
  font-family: var(--font-display); font-size: 14px; letter-spacing: 0.04em;
  color: var(--green); background: var(--charcoal-3); border-bottom: 1px solid var(--line-strong);
}
.data-table tbody th { font-weight: 600; color: var(--white); width: 30%; background: rgba(247,248,250,0.02); }
.data-table td { color: var(--gray-soft); }
.data-table tr:last-child th, .data-table tr:last-child td { border-bottom: 0; }
.data-table td b, .data-table td strong { color: var(--white); }

/* Hộp ghi chú minh bạch / phạm vi */
.note-box {
  border: 1px dashed var(--line-strong); border-radius: var(--radius);
  padding: 20px 24px; color: var(--gray-soft); font-size: 15.5px;
  background: rgba(184, 255, 79, 0.03);
}
.note-box b { color: var(--white); }

/* Trích dẫn thay đổi định tính */
.quote-block {
  border-left: 3px solid var(--green); margin: 0;
  padding: 6px 0 6px 24px;
  font-size: clamp(18px, 2.2vw, 22px); line-height: 1.55; font-weight: 500;
  max-width: 880px;
}

/* Văn bản đoạn dài (bối cảnh case, chính sách) */
.prose { max-width: 820px; }
.prose p { color: var(--gray-soft); font-size: 16.5px; margin-bottom: 16px; }
.prose p:last-child { margin-bottom: 0; }
.prose h3 { font-size: 20px; margin: 30px 0 10px; }
.prose ul { display: grid; gap: 9px; margin-bottom: 16px; }
.prose ul li { position: relative; padding-left: 20px; color: var(--gray-soft); }
.prose ul li::before { content: "—"; position: absolute; left: 0; color: var(--green); }

/* Stepper 5 bước (định nghĩa bổ sung — trang liên hệ đã dùng từ vòng 1) */
.steps-5 { display: grid; gap: 0; }
.steps-5 li {
  display: grid; grid-template-columns: 46px 1fr; gap: 16px;
  padding: 18px 0; border-bottom: 1px solid var(--line);
}
.steps-5 li:last-child { border-bottom: 0; }
.steps-5 .s5-no {
  font-family: var(--font-display); font-weight: 800; font-size: 18px; color: var(--green);
}
.steps-5 li b { display: block; font-family: var(--font-display); font-size: 17.5px; margin-bottom: 3px; }
.steps-5 li p { color: var(--gray-soft); font-size: 15px; }
.steps-5 li p .confirm { color: var(--green); font-weight: 600; }

/* Chips phạm vi dùng chung (ngoài .case-row) */
.scope-chips { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.scope-chips span {
  font-size: 12.5px; border: 1px solid var(--line-strong); color: var(--gray-soft);
  padding: 5px 11px; border-radius: 999px;
}

/* Bộ lọc trang case study */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 14px; }
.filter-bar .fb-label { font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gray); margin-right: 2px; }
.filter-chip {
  background: transparent; color: var(--gray-soft);
  border: 1px solid var(--line-strong); border-radius: 999px;
  padding: 8px 16px; font-size: 14px; font-weight: 600;
  transition: border-color var(--dur-micro), color var(--dur-micro), background var(--dur-micro);
}
.filter-chip:hover { border-color: var(--green); color: var(--white); }
.filter-chip.active { background: var(--green); border-color: var(--green); color: var(--charcoal); }
.filter-empty { color: var(--gray-soft); border: 1px dashed var(--line-strong); border-radius: var(--radius); padding: 22px 24px; }

/* Thẻ case ở trang danh sách */
.case-card .case-visual { margin-bottom: 20px; border-radius: 10px; overflow: hidden; }
.case-card h3 { font-size: 22px; margin-bottom: 8px; }
.case-card > p { color: var(--gray-soft); font-size: 15.5px; }
.case-card .card-note { margin-top: 14px; font-size: 13.5px; color: var(--gray); }

/* Nhóm FAQ theo nguồn */
.faq-group-head { margin: clamp(38px, 5vw, 56px) 0 20px; }
.faq-group-head:first-child { margin-top: 0; }
.faq-group-head h2 { font-size: clamp(24px, 3vw, 32px); margin-top: 10px; }
.faq-group-head .sub { color: var(--gray-soft); margin-top: 8px; max-width: 720px; }

/* Khối founder đang cập nhật hồ sơ (trang Về HIGRO) */
.profile-pending {
  display: grid; grid-template-columns: 300px 1fr; gap: clamp(24px, 4vw, 48px);
  align-items: center;
}
.profile-pending .pp-visual {
  border: 1px dashed var(--line-strong); border-radius: var(--radius);
  min-height: 260px; display: flex; flex-direction: column; gap: 10px;
  align-items: center; justify-content: center; text-align: center;
  color: var(--gray); padding: 24px;
}
.profile-pending .pp-visual .fm-letter { font-size: 84px; }

/* ---------- 22. RESPONSIVE ---------- */
@media (max-width: 1080px) {
  .pillar-grid, .topic-grid, .timeline, .grow-steps { grid-template-columns: repeat(2, 1fr); }
  .mini-case { display: none; }
}
@media (max-width: 900px) {
  .main-nav, .header-cta { display: none; }
  .burger { display: inline-flex; }
  .grid-3, .audit-cards { grid-template-columns: 1fr; }
  .grid-2, .commit-grid, .founder-grid, .show-layout, .svc-layout, .ind-block, .profile-pending { grid-template-columns: 1fr; }
  .svc-panel { display: none; }
  .case-preview { display: none; }
  .case-mobile-visual { display: block; margin-bottom: 18px; }
  .case-row { padding: 22px 2px; }
  .case-row:hover h3, .case-row.active h3 { transform: none; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-marquee { display: none; }
}
@media (max-width: 560px) {
  .pillar-grid, .topic-grid, .timeline, .grow-steps { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(38px, 12.4vw, 54px); }
  .marquee-track { animation-duration: 50s; }
}