/*
  monaai.vn · 1 file CSS dùng chung cho bản VI và EN.
  Token chép nguyên từ monacloud-nhut/src/styles/tokens.css để site cùng chất MONA Cloud.
*/
:root {
  color-scheme: dark;

  /* Nền */
  --night: #05081a;
  --deep: #0a0f2c;
  --navy: #121a45;
  --navy-2: #1a2560;

  /* Thương hiệu */
  --brand: #2d50e0;
  --blue: #5b78ff;
  --periwinkle: #8b9ffd;
  --ember: #f5851e;
  --ember-2: #ff6a2b;
  --blue-soft: #b9c5ff;

  /* Chữ và đường kẻ trên nền tối */
  --ink: #eef1ff;
  --ink-dim: #a8b2d6;
  --ink-mute: #7a85ab;
  --btn-ink: #2a1200;
  --line: rgba(214, 222, 255, 0.14);
  --line-strong: rgba(214, 222, 255, 0.28);
  --glass: rgba(18, 26, 69, 0.55);
  --glass-strong: rgba(10, 15, 44, 0.82);

  --status-live: #2fd88a;
  --status-building: #ffd166;
  --status-external: #a8b2d6;

  /* Gradient */
  --grad-brand: linear-gradient(80deg, #2d50e0 0%, #8b9ffd 100%);
  --grad-brand-deep: linear-gradient(95deg, #2d50e0 0%, #4262ea 100%);
  --grad-vertical: linear-gradient(180deg, #2442c4 0%, #8b9ffd 100%);
  --grad-cta: linear-gradient(101deg, #ffa318 -10%, #f6851c 45%, #f31f10 130%);
  --grad-accent: linear-gradient(100deg, #c3cdff 0%, #8b9ffd 45%, #5b78ff 100%);
  --grad-button: linear-gradient(100deg, #2442c4 0%, #2d50e0 45%, #5b78ff 110%);
  --grad-border: linear-gradient(135deg, rgba(185, 197, 255, 0.55), rgba(139, 159, 253, 0.35) 45%, rgba(214, 222, 255, 0.08));

  /* Chữ */
  --font-sans: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Be Vietnam Pro', system-ui, sans-serif;

  --step--1: 0.875rem;
  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: 1.333rem;
  --step-3: 1.777rem;
  --step-4: clamp(1.9rem, 3.6vw, 2.369rem);
  --step-5: clamp(2rem, 4.4vw, 3.157rem);
  --step-6: clamp(2.3rem, 5.6vw, 4.4rem);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  --container: 76rem;
  --header-h: 4.5rem;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============ Nền tảng ============ */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  background: var(--night);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--ink);
  background: var(--night);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--space-4);
  line-height: 1.22; /* tiếng Việt: dấu chồng không chạm đuôi chữ dòng trên */
  letter-spacing: -0.015em;
  font-weight: 800;
  text-wrap: balance;
}

h1 { font-size: var(--step-6); letter-spacing: -0.03em; line-height: 1.16; }
h2 { font-size: var(--step-5); letter-spacing: -0.025em; }
h3 { font-size: var(--step-2); font-weight: 700; }

p, ul, ol { margin: 0 0 var(--space-4); }
p { text-wrap: pretty; }

@media (max-width: 1023px) {
  h1, h2, h3, h4 { text-wrap: pretty; }
}

a { color: var(--blue-soft); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { color: #fff; }
img { max-width: 100%; height: auto; display: block; }

::selection { background: var(--periwinkle); color: #fff; }
:focus-visible { outline: 2px solid var(--periwinkle); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 200;
  padding: 0.5rem 1rem; border-radius: var(--radius-sm);
  background: var(--ink); color: var(--night);
}
.skip-link:focus { top: 1rem; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.section { position: relative; padding-block: clamp(4rem, 8vw, 6.5rem); }
.section--alt { background: linear-gradient(180deg, var(--deep) 0%, var(--night) 100%); }

.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 5vw, 3.25rem); }
.section-head > :last-child { margin-bottom: 0; }

.kick {
  display: inline-flex; align-items: center; gap: 0.75rem;
  margin: 0 0 var(--space-4);
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: #a6b6ff;
}
.kick::after { content: ''; width: 2.25rem; height: 1px; background: linear-gradient(90deg, currentColor, transparent); }

.accent {
  background: var(--grad-accent);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}

.lead { font-size: var(--step-1); line-height: 1.65; color: var(--ink-dim); }
.muted { color: var(--ink-dim); }
.nowrap { white-space: nowrap; }

/* ============ Nút ============ */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 3rem; padding: 0.8rem 1.6rem;
  border: 1px solid transparent; border-radius: 999px;
  font: inherit; font-weight: 700; line-height: 1.2; text-decoration: none;
  cursor: pointer; isolation: isolate; overflow: hidden;
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), background-color 0.25s, color 0.25s;
}
.btn:hover { transform: translateY(-2px); }
.btn--sm { min-height: 2.5rem; padding: 0.5rem 1.1rem; font-size: 0.92rem; }

.btn--cta {
  background: var(--grad-cta); color: var(--btn-ink);
  box-shadow: 0 14px 36px -12px rgba(255, 106, 43, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.btn--cta:hover { color: var(--btn-ink); box-shadow: 0 20px 46px -12px rgba(255, 106, 43, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.4); }

.btn--cta::after {
  content: ''; position: absolute; top: 0; bottom: 0; left: -60%; width: 45%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  transform: skewX(-18deg); transition: left 0.75s var(--ease-out); pointer-events: none;
}
.btn--cta:hover::after { left: 120%; }

.btn--ghost {
  border-color: var(--line-strong); background: rgba(214, 222, 255, 0.04); color: var(--ink);
  backdrop-filter: blur(10px);
}
.btn--ghost:hover { border-color: rgba(185, 197, 255, 0.6); background: rgba(91, 120, 255, 0.14); color: #fff; }

.btn__arrow { width: 1.1em; height: 1.1em; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; transition: transform 0.35s var(--ease-out); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ============ Thẻ kính viền gradient ============ */
.card {
  position: relative; display: flex; flex-direction: column; gap: 0.5rem;
  padding: var(--space-6); border-radius: var(--radius-lg);
  background: var(--glass);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  isolation: isolate;
}
.card::before {
  content: ''; position: absolute; inset: 0; z-index: -1; padding: 1px; border-radius: inherit;
  background: var(--grad-border);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.card > :last-child { margin-bottom: 0; }
.card h3 { margin-bottom: 0.25rem; }
.card p { color: var(--ink-dim); }

.grid { display: grid; gap: var(--space-6); grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 1023px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px) { .grid { grid-template-columns: minmax(0, 1fr); gap: var(--space-4); } }

/* ============ Thanh trên + header ============ */
.topbar {
  position: relative; z-index: 60;
  border-bottom: 1px solid var(--line);
  background: #03050f;
  font-size: 0.82rem; color: var(--ink-dim);
}
.topbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 2.4rem; }
.topbar a { color: var(--ink-dim); text-decoration: none; }
.topbar a:hover { color: #fff; }
.topbar__group { display: inline-flex; align-items: center; gap: 0.5rem; }
.topbar__group img { width: 1.1rem; height: auto; }

.lang { display: inline-flex; padding: 2px; border: 1px solid var(--line-strong); border-radius: 999px; }
.lang a, .lang span {
  padding: 0.1rem 0.65rem; border-radius: 999px; font-weight: 700; font-size: 0.76rem; letter-spacing: 0.06em;
}
.lang [aria-current] { background: var(--grad-brand-deep); color: #fff; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background-color 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
}
.site-header.is-scrolled, .site-header.has-drawer {
  background: rgba(5, 8, 26, 0.97);
  border-bottom-color: var(--line-strong);
  backdrop-filter: blur(22px) saturate(140%); -webkit-backdrop-filter: blur(22px) saturate(140%);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: var(--header-h); }

.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ink); text-decoration: none; flex: none; }
.brand:hover { color: var(--ink); }
.brand img { width: 2.6rem; height: auto; }
.brand__name { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.01em; white-space: nowrap; }
.brand__name b { background: var(--grad-accent); -webkit-background-clip: text; background-clip: text; color: transparent; }

.site-nav { display: flex; align-items: center; gap: 1.25rem; }
.site-nav__list { display: flex; gap: 0.15rem; margin: 0; padding: 0; list-style: none; }
.site-nav__list a {
  display: block; padding: 0.45rem 0.7rem; border-radius: 999px;
  color: var(--ink-dim); font-size: 0.92rem; font-weight: 600; text-decoration: none; white-space: nowrap;
  transition: color 0.2s, background-color 0.2s;
}
.site-nav__list a:hover { color: #fff; background: rgba(91, 120, 255, 0.14); }

.nav-toggle {
  display: none; align-items: center; gap: 0.5rem;
  padding: 0.5rem 1rem; border: 1px solid var(--line-strong); border-radius: 999px;
  background: transparent; color: var(--ink); font: inherit; font-weight: 600; cursor: pointer;
}
.nav-toggle__bars { position: relative; width: 1.1rem; height: 0.75rem; }
.nav-toggle__bars::before, .nav-toggle__bars::after, .nav-toggle__bars span {
  content: ''; position: absolute; left: 0; right: 0; height: 2px; border-radius: 2px; background: currentColor;
  transition: transform 0.3s var(--ease-out), opacity 0.2s;
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars span { top: calc(50% - 1px); }
.nav-toggle__bars::after { bottom: 0; }
.nav-toggle[aria-expanded='true'] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded='true'] .nav-toggle__bars span { opacity: 0; }
.nav-toggle[aria-expanded='true'] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

@media (max-width: 1180px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 70;
    width: min(22rem, 86vw);
    flex-direction: column; align-items: stretch; gap: 1.5rem;
    padding: calc(var(--header-h) + 3.25rem) 1.25rem 2rem;
    background: rgba(7, 11, 34, 0.98);
    border-left: 1px solid var(--line-strong);
    box-shadow: -30px 0 60px rgba(0, 0, 0, 0.5);
    transform: translateX(100%); visibility: hidden;
    transition: transform 0.45s var(--ease-out), visibility 0s 0.45s;
    overflow-y: auto;
  }
  .site-nav.is-open { transform: none; visibility: visible; transition: transform 0.45s var(--ease-out); }
  .site-nav__list { flex-direction: column; gap: 0.25rem; }
  .site-nav__list a { padding: 0.85rem 1rem; font-size: 1.05rem; color: var(--ink); border: 1px solid var(--line); border-radius: var(--radius-md); }
  .site-nav .btn { width: 100%; }
  .nav-toggle { position: relative; z-index: 80; }
  .nav-scrim {
    position: fixed; inset: 0; z-index: 65; background: rgba(2, 4, 14, 0.6);
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
  }
  .nav-scrim.is-open { opacity: 1; pointer-events: auto; }
}
@media (min-width: 1181px) { .nav-scrim { display: none; } }

/* ============ Hero ============ */
.hero {
  position: relative; overflow: hidden; isolation: isolate;
  padding-block: clamp(3rem, 7vw, 5.5rem) clamp(2.5rem, 5vw, 4rem);
  background: radial-gradient(120% 80% at 50% 0%, #0d1438 0%, var(--night) 60%);
}
.hero__nebula {
  position: absolute; inset: -20% -10% auto; height: 120%; z-index: -2;
  background:
    radial-gradient(38% 42% at 78% 38%, rgba(91, 120, 255, 0.42), transparent 70%),
    radial-gradient(30% 36% at 92% 70%, rgba(139, 159, 253, 0.3), transparent 70%),
    radial-gradient(28% 30% at 8% 18%, rgba(45, 80, 224, 0.3), transparent 70%);
  filter: blur(10px);
  animation: nebula-drift 26s ease-in-out infinite alternate;
}
@keyframes nebula-drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-3%, 2%, 0) scale(1.08); }
}
.hero__floor {
  position: absolute; left: -25%; right: -25%; bottom: -2px; height: 46%; z-index: -1;
  background-image:
    linear-gradient(rgba(185, 197, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(185, 197, 255, 0.18) 1px, transparent 1px);
  background-size: 64px 64px;
  transform: perspective(520px) rotateX(62deg); transform-origin: 50% 100%;
  -webkit-mask-image: linear-gradient(to top, #000 10%, transparent 85%);
  mask-image: linear-gradient(to top, #000 10%, transparent 85%);
  animation: floor-run 3.2s linear infinite;
}
@keyframes floor-run { from { background-position: 0 0; } to { background-position: 0 64px; } }

.hero__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (max-width: 1023px) { .hero__grid { grid-template-columns: minmax(0, 1fr); } }

.hero__badge {
  display: inline-flex; align-items: center; gap: 0.55rem;
  margin-bottom: 1.25rem; padding: 0.35rem 0.9rem 0.35rem 0.7rem;
  border: 1px solid var(--line-strong); border-radius: 999px;
  background: rgba(18, 26, 69, 0.6); backdrop-filter: blur(10px);
  font-size: 0.84rem; font-weight: 600; color: var(--ink-dim);
}
.hero__badge i { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--status-live); box-shadow: 0 0 10px var(--status-live); }
.hero h1 { margin-bottom: 1.25rem; }
.hero .lead { max-width: 36rem; margin-bottom: 2rem; }

.hero__mosaic {
  display: grid; gap: 0.75rem;
  grid-template-columns: 1.15fr 0.85fr;
  grid-template-rows: 1fr 1fr;
  aspect-ratio: 1.08 / 1;
}
.hero__mosaic figure { margin: 0; position: relative; overflow: hidden; border-radius: var(--radius-lg); border: 1px solid var(--line-strong); }
.hero__mosaic figure:first-child { grid-row: 1 / 3; }
.hero__mosaic img { width: 100%; height: 100%; object-fit: cover; }
.hero__mosaic .m-small { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; border: 0; border-radius: 0; overflow: visible; }
.hero__mosaic .m-small > div { overflow: hidden; border-radius: var(--radius-lg); border: 1px solid var(--line-strong); }
.hero__mosaic-wrap { position: relative; }
.hero__mosaic-wrap::before {
  content: ''; position: absolute; inset: 10% 5% -6% 10%; z-index: -1;
  background: radial-gradient(closest-side, rgba(91, 120, 255, 0.45), transparent);
  filter: blur(30px);
}
.hero__tag {
  position: absolute; left: -0.75rem; bottom: 1.25rem; z-index: 2;
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.6rem 0.9rem; border-radius: var(--radius-md);
  background: var(--glass-strong); border: 1px solid var(--line-strong); backdrop-filter: blur(12px);
  font-size: 0.82rem; font-weight: 600; color: var(--ink); box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}
.hero__tag img { width: 1.6rem; }
@media (max-width: 767px) {
  .hero__mosaic { aspect-ratio: 1 / 1; gap: 0.5rem; }
  .hero__mosaic .m-small { gap: 0.5rem; }
  .hero__tag { left: 0.5rem; bottom: 0.5rem; }
}

.stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: clamp(2.5rem, 6vw, 4rem);
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: rgba(10, 15, 44, 0.6); backdrop-filter: blur(12px);
}
.stat { padding: 1.4rem 1.5rem; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; }
.stat__value {
  display: block; font-weight: 800; font-variant-numeric: tabular-nums;
  font-size: clamp(1.7rem, 3.2vw, 2.3rem); line-height: 1.1; margin-bottom: 0.35rem;
  background: var(--grad-accent); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat__label { font-size: 0.9rem; color: var(--ink-dim); line-height: 1.45; }
@media (max-width: 1023px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 420px) { .stat { padding: 1.1rem 1rem; } }

/* ============ Vấn đề ============ */
.problem__num {
  display: inline-grid; place-items: center; width: 2.6rem; height: 2.6rem; margin-bottom: 0.75rem;
  border-radius: 12px; background: rgba(245, 133, 30, 0.12); border: 1px solid rgba(245, 133, 30, 0.35);
  color: #ffb36b; font-weight: 800;
}

/* ============ Dịch vụ ============ */
.service { padding: 0; overflow: hidden; }
.service__img { aspect-ratio: 16 / 10; overflow: hidden; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
.service__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease-out); }
.service:hover .service__img img { transform: scale(1.04); }
.service__body { display: flex; flex-direction: column; gap: 0.5rem; padding: 1.5rem; flex: 1; }
.service__label { font-size: 0.76rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--periwinkle); }
.service__out {
  margin-top: auto; padding: 0.9rem 1rem; border-radius: var(--radius-md);
  background: rgba(45, 80, 224, 0.14); border: 1px solid rgba(139, 159, 253, 0.25);
  font-size: 0.92rem; color: var(--ink);
}
.service__out strong { display: block; font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--blue-soft); margin-bottom: 0.2rem; }

/* ============ Cách làm: dòng thời gian ============ */
.timeline { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.5rem; margin: 0; padding: 0; list-style: none; counter-reset: step; }
.timeline::before {
  content: ''; position: absolute; top: 1.4rem; left: 1.4rem; right: 1.4rem; height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--periwinkle), rgba(139, 159, 253, 0.1));
}
.timeline li { position: relative; counter-increment: step; }
.timeline li::before {
  content: counter(step, decimal-leading-zero);
  position: relative; z-index: 1; display: grid; place-items: center;
  width: 2.8rem; height: 2.8rem; margin-bottom: 1.25rem; border-radius: 50%;
  background: var(--grad-brand); color: #fff; font-weight: 800; font-size: 0.95rem;
  box-shadow: 0 0 0 6px var(--night), 0 0 28px rgba(139, 159, 253, 0.5);
}
.timeline h3 { font-size: 1.2rem; }
.timeline p { color: var(--ink-dim); margin: 0; }
@media (max-width: 1023px) {
  .timeline { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .timeline::before { top: 1.4rem; bottom: 1.4rem; left: 1.4rem; right: auto; width: 2px; height: auto; background: linear-gradient(180deg, var(--brand), var(--periwinkle), rgba(139, 159, 253, 0.1)); }
  .timeline li { padding-left: 4.25rem; }
  .timeline li::before { position: absolute; left: 0; top: 0; margin: 0; }
}

/* ============ Chương trình ============ */
.programs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
.program--wide { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 2rem; align-items: center; }
.program__meta { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.25rem 0 0.5rem; }
.chip {
  display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.2rem 0.7rem;
  border: 1px solid var(--line-strong); border-radius: 999px; font-size: 0.78rem; font-weight: 600; color: var(--ink-dim);
}
.chip--live { color: var(--status-live); border-color: rgba(47, 216, 138, 0.4); }
.chip--live::before { content: ''; width: 0.45em; height: 0.45em; border-radius: 50%; background: currentColor; }
.program__link { display: inline-flex; align-items: center; gap: 0.4rem; margin-top: auto; padding-top: 0.75rem; font-weight: 700; text-decoration: none; }
.program__link svg { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.program__shot { margin: 0; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--line-strong); box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6); }
.program__shot img { width: 100%; height: auto; }
.bears { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.6rem; margin: 0.5rem 0 0.75rem; padding: 0; list-style: none; }
.bears li { padding: 0.7rem 0.85rem; border-radius: var(--radius-md); background: rgba(5, 8, 26, 0.5); border: 1px solid var(--line); font-size: 0.88rem; color: var(--ink-dim); line-height: 1.45; }
.bears b { display: block; color: var(--ink); font-size: 0.95rem; }
@media (max-width: 1023px) {
  .programs { grid-template-columns: minmax(0, 1fr); }
  .program--wide { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 420px) { .bears { grid-template-columns: minmax(0, 1fr); } }

/* ============ Built with Claude ============ */
.claude {
  background:
    radial-gradient(50% 60% at 100% 0%, rgba(245, 133, 30, 0.12), transparent 70%),
    radial-gradient(50% 60% at 0% 100%, rgba(45, 80, 224, 0.25), transparent 70%),
    var(--deep);
  border-block: 1px solid var(--line);
}
.claude__layout { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(2rem, 5vw, 3.5rem); align-items: start; }
.claude__blocks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.claude__icon {
  display: grid; place-items: center; width: 2.75rem; height: 2.75rem; margin-bottom: 0.5rem;
  border-radius: 12px; background: rgba(91, 120, 255, 0.16); border: 1px solid rgba(139, 159, 253, 0.35);
}
.claude__icon svg { width: 1.4rem; height: 1.4rem; fill: none; stroke: var(--blue-soft); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.claude__blocks h3 { font-size: 1.1rem; }
.claude__blocks p { font-size: 0.95rem; }
.claude__side { position: sticky; top: calc(var(--header-h) + 1.5rem); display: grid; gap: 1rem; }
.claude__photo { margin: 0; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line-strong); }
.claude__photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.claude__plan { border-color: rgba(245, 133, 30, 0.4); }
.claude__plan::before { background: linear-gradient(135deg, rgba(255, 163, 24, 0.7), rgba(243, 31, 16, 0.3) 50%, rgba(214, 222, 255, 0.08)); }
.claude__plan h3 { font-size: 1.1rem; color: #ffc48a; }
@media (max-width: 1023px) {
  .claude__layout { grid-template-columns: minmax(0, 1fr); }
  .claude__side { position: static; }
}
@media (max-width: 640px) { .claude__blocks { grid-template-columns: minmax(0, 1fr); } }

/* ============ Đội ngũ, văn phòng: mosaic ============ */
.gallery {
  display: grid; gap: 0.75rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: clamp(9rem, 15vw, 13rem);
  grid-auto-flow: dense;
}
.gallery figure { position: relative; margin: 0; overflow: hidden; border-radius: var(--radius-md); border: 1px solid var(--line); }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.9s var(--ease-out); }
.gallery figure:hover img { transform: scale(1.05); }
.gallery figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 1.5rem 0.9rem 0.7rem;
  background: linear-gradient(transparent, rgba(3, 5, 15, 0.85));
  font-size: 0.82rem; font-weight: 600; color: var(--ink);
}
.g-wide { grid-column: span 2; }
.g-tall { grid-row: span 2; }
.g-big { grid-column: span 2; grid-row: span 2; }
@media (max-width: 767px) {
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 9rem; gap: 0.5rem; }
  .g-big { grid-column: span 2; grid-row: span 2; }
  .g-wide { grid-column: span 2; }
}

/* ============ Về chúng tôi + pháp lý ============ */
.about__layout { display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); gap: clamp(2rem, 5vw, 3.5rem); align-items: start; }
@media (max-width: 1023px) { .about__layout { grid-template-columns: minmax(0, 1fr); } }
.legal { padding: 0; overflow: hidden; }
.legal table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.legal caption { padding: 1.1rem 1.25rem; text-align: left; font-weight: 700; border-bottom: 1px solid var(--line); }
.legal th, .legal td { padding: 0.85rem 1.25rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.legal tr:last-child th, .legal tr:last-child td { border-bottom: 0; }
.legal th { width: 38%; font-weight: 600; color: var(--ink-dim); }
.legal td { color: var(--ink); font-weight: 500; }
.legal .src { padding: 0.85rem 1.25rem; font-size: 0.82rem; color: var(--ink-mute); border-top: 1px solid var(--line); margin: 0; }
@media (max-width: 520px) {
  .legal th, .legal td { display: block; width: auto; padding: 0.15rem 1.1rem; border: 0; }
  .legal th { padding-top: 0.8rem; font-size: 0.82rem; }
  .legal td { padding-bottom: 0.8rem; border-bottom: 1px solid var(--line); }
}

.group-map { margin-top: clamp(2.5rem, 5vw, 3.5rem); }
.group-map h3 { margin-bottom: 1.25rem; }
.group-map__root {
  display: flex; align-items: center; justify-content: center; gap: 0.75rem;
  max-width: 24rem; margin: 0 auto; padding: 1rem 1.25rem;
  border-radius: var(--radius-md); background: var(--grad-brand-deep); color: #fff; text-decoration: none; font-weight: 800;
  box-shadow: 0 16px 40px -14px rgba(91, 120, 255, 0.8);
}
.group-map__root:hover { color: #fff; }
.group-map__root img { width: 2rem; }
.group-map__stem { width: 2px; height: 1.75rem; margin: 0 auto; background: var(--line-strong); }
.group-map__list {
  position: relative; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 0.75rem;
  margin: 0; padding: 1.75rem 0 0; list-style: none;
  border-top: 2px solid var(--line-strong);
}
.group-map__list a {
  position: relative; display: flex; flex-direction: column; gap: 0.15rem; height: 100%;
  padding: 0.9rem 1rem; border-radius: var(--radius-md);
  background: var(--glass); border: 1px solid var(--line); text-decoration: none;
  transition: border-color 0.25s, transform 0.35s var(--ease-out);
}
.group-map__list a::before { content: ''; position: absolute; top: calc(-1.75rem - 1px); left: 50%; width: 2px; height: 1.75rem; background: var(--line-strong); }
.group-map__list a:hover { border-color: var(--periwinkle); transform: translateY(-3px); }
.group-map__list b { color: var(--ink); font-size: 0.98rem; }
.group-map__list span { color: var(--ink-mute); font-size: 0.8rem; }
.group-map__list .is-self a { border-color: rgba(139, 159, 253, 0.7); background: rgba(45, 80, 224, 0.2); }
@media (max-width: 1023px) {
  .group-map__list { grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 0; padding-top: 0; }
  .group-map__list a::before { display: none; }
}
@media (max-width: 560px) { .group-map__list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ============ Liên hệ ============ */
.contact__layout { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(2rem, 5vw, 3.5rem); align-items: start; }
@media (max-width: 1023px) { .contact__layout { grid-template-columns: minmax(0, 1fr); } }
.contact__list { display: grid; gap: 0.75rem; margin: 1.5rem 0 0; padding: 0; list-style: none; }
.contact__list li { display: grid; grid-template-columns: 2.5rem minmax(0, 1fr); gap: 0.85rem; align-items: start; padding: 0.9rem 1rem; border-radius: var(--radius-md); background: var(--glass); border: 1px solid var(--line); }
.contact__list svg { width: 2.5rem; height: 2.5rem; padding: 0.55rem; border-radius: 10px; background: rgba(91, 120, 255, 0.16); fill: none; stroke: var(--blue-soft); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.contact__list small { display: block; color: var(--ink-mute); font-size: 0.8rem; }
.contact__list a, .contact__list address { color: var(--ink); font-weight: 600; font-style: normal; text-decoration: none; overflow-wrap: anywhere; }
.contact__list a:hover { color: #fff; text-decoration: underline; }

.form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; padding: clamp(1.25rem, 3vw, 2rem); }
.form h3 { grid-column: 1 / -1; margin: 0; }
.form > p { grid-column: 1 / -1; margin: 0; }
.field { display: grid; gap: 0.4rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 0.88rem; font-weight: 600; color: var(--ink-dim); }
.field input, .field textarea {
  width: 100%; padding: 0.8rem 0.95rem; border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong); background: rgba(5, 8, 26, 0.7);
  color: var(--ink); font: inherit; font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 7.5rem; resize: vertical; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--periwinkle); box-shadow: 0 0 0 3px rgba(139, 159, 253, 0.25); }
.form .btn { grid-column: 1 / -1; justify-self: start; }
.form__note { font-size: 0.84rem; color: var(--ink-mute); }
.form__status { grid-column: 1 / -1; margin: 0; font-size: 0.9rem; color: var(--status-live); min-height: 1.2em; }
@media (max-width: 600px) {
  .form { grid-template-columns: minmax(0, 1fr); }
  .form .btn { width: 100%; }
}

/* ============ Footer ============ */
.site-footer { padding-block: 3.5rem 2rem; border-top: 1px solid var(--line); background: #03050f; font-size: 0.92rem; color: var(--ink-dim); }
.footer__grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr); gap: 2rem; }
@media (max-width: 860px) { .footer__grid { grid-template-columns: minmax(0, 1fr); } }
.site-footer h4 { font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); margin-bottom: 1rem; }
.site-footer ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.5rem; }
.site-footer a { color: var(--ink-dim); text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); font-size: 0.84rem; color: var(--ink-mute); }

/* ============ 404 ============ */
.notfound { min-height: 70vh; display: grid; place-items: center; text-align: center; }
.notfound__code { font-size: clamp(4rem, 14vw, 8rem); font-weight: 800; line-height: 1; margin-bottom: 1rem; }
.notfound .actions { justify-content: center; }

/* ============ Reveal khi cuộn ============ */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out); }
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* Tiêu đề hero nằm trong cột nửa màn: nhỏ hơn h1 mặc định để ngắt 3 đến 4 hàng theo nghĩa */
.hero h1 { font-size: clamp(2.1rem, 4.3vw, 3.45rem); }
.footer__line { margin-top: 1rem; }
/* Cụm có gạch nối (AI-native) không được gãy giữa dòng */
.accent, .nw { white-space: nowrap; }

/* Tablet: thẻ lẻ cuối hàng trải hết bề ngang, thẻ dịch vụ thì nằm ngang ảnh trái chữ phải */
@media (min-width: 768px) and (max-width: 1023px) {
  .grid > .card:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .grid > .service:last-child:nth-child(odd) { flex-direction: row; }
  .grid > .service:last-child:nth-child(odd) .service__img { flex: 0 0 42%; aspect-ratio: auto; border-radius: var(--radius-lg) 0 0 var(--radius-lg); }
}

/* Ngăn kéo menu: backdrop-filter trên header biến header thành khung chứa của phần tử fixed,
   làm ngăn kéo bị kẹt trong 72px. Khi mở ngăn kéo thì bỏ filter và đưa header lên trên thanh trên cùng. */
.site-header.has-drawer { z-index: 100; backdrop-filter: none; -webkit-backdrop-filter: none; }

/* chặn cuộn ngang do menu ngăn kéo nằm ngoài khung (20/10/2026) */
html { overflow-x: clip; }