/* ══ SMILETECH — NHA KHOA CÔNG NGHỆ CAO — GLASS-MODERN ══ */
/* Font: Plus Jakarta Sans | Tone: dark gradient dominant | Identity: GLASS-MODERN (glassmorphism) */
/* Prefix: st- */

:root {
  --sans: 'Plus Jakarta Sans', sans-serif;

  /* Nền tổng thể — dark gradient xanh dương đậm -> tím đậm */
  --bg: #0a0d24;
  --bg-2: #150f38;
  --bg-3: #1f1250;
  --dark: #05060f;
  --dark2: #0c0e26;

  /* Glass surfaces */
  --surface: rgba(255, 255, 255, 0.055);
  --surface-2: rgba(255, 255, 255, 0.09);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-border-strong: rgba(255, 255, 255, 0.24);

  --border: rgba(255, 255, 255, 0.12);
  --border-light: rgba(255, 255, 255, 0.07);

  --text: #f3f4fb;
  --text-2: #a7acce;
  --text-3: #6d729a;

  /* Accent — gradient xanh dương -> tím */
  --accent: #4f7cff;
  --accent-2: #7c5cff;
  --accent-h: #6f92ff;
  --accent-light: rgba(79, 124, 255, 0.14);
  --accent-mid: #6a6bff;

  --gradient-brand: linear-gradient(135deg, #4f7cff 0%, #7c5cff 100%);
  --gradient-brand-h: linear-gradient(135deg, #6f92ff 0%, #9779ff 100%);
  --gradient-bg: radial-gradient(circle at 12% -10%, rgba(79, 124, 255, 0.22), transparent 42%),
    radial-gradient(circle at 88% 8%, rgba(124, 92, 255, 0.2), transparent 45%),
    linear-gradient(165deg, #0a0d24 0%, #150f38 52%, #1f1250 100%);

  --danger: #ff6b7a;
  --success: #3ee6a8;

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--gradient-bg) fixed;
  color: var(--text);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: var(--sans); cursor: pointer; }
input, textarea, select { font-family: var(--sans); }

::selection { background: var(--accent); color: #fff; }

/* === Container === */
.wd-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 64px);
}

.st-sec-pad { padding: clamp(72px, 9vw, 128px) 0; }

/* === Gradient text utility === */
.st-grad-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* === Section header === */
.st-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent-h);
  margin-bottom: 18px;
}
.st-eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gradient-brand);
  box-shadow: 0 0 12px rgba(124, 92, 255, 0.8);
}

.st-sec-title {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 16px;
}

.st-sec-sub {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-2);
  max-width: 540px;
  line-height: 1.7;
}

.st-center { text-align: center; margin-left: auto; margin-right: auto; }
.st-center .st-sec-sub { margin-left: auto; margin-right: auto; }

/* ══════════════════════════════════════
   NAV — Dark Floating Glass Pill (Nav-3 variant)
   ══════════════════════════════════════ */
#st-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 1180px;
  z-index: 1000;
  border-radius: 100px;
  background: rgba(9, 11, 32, 0.62);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 40px rgba(3, 4, 16, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: box-shadow .3s ease, border-color .3s ease;
}

#st-nav::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 100px;
  padding: 1px;
  background: linear-gradient(115deg, rgba(79, 124, 255, 0.55), rgba(124, 92, 255, 0.45) 35%, transparent 65%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: .85;
}

.st-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 12px 0 22px;
  position: relative;
}

.st-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}
.st-logo-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gradient-brand);
  box-shadow: 0 0 14px rgba(124, 92, 255, 0.9);
  flex-shrink: 0;
}
.st-logo span { color: var(--text-3); font-weight: 400; }

.st-nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}
.st-nav-links a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-2);
  transition: color .2s ease;
  position: relative;
}
.st-nav-links a:hover, .st-nav-links a.active { color: #fff; }
.st-nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -20px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient-brand);
}

.st-nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.st-burger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--surface);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}
.st-burger span {
  display: block;
  width: 16px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.st-burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.st-burger.open span:nth-child(2) { opacity: 0; }
.st-burger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

#st-nav-mob {
  position: fixed;
  top: 92px;
  left: 16px;
  right: 16px;
  max-height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: rgba(9, 11, 32, 0.92);
  backdrop-filter: blur(22px);
  border: 1px solid var(--glass-border);
  z-index: 999;
  transition: max-height .35s ease, padding .35s ease;
  padding: 0 22px;
}
#st-nav-mob.open { max-height: 420px; padding: 20px 22px; }
#st-nav-mob a {
  display: block;
  padding: 12px 0;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--text-2);
  border-bottom: 1px solid var(--border-light);
}
#st-nav-mob a:last-of-type { border-bottom: none; }
#st-nav-mob .st-btn { margin-top: 14px; width: 100%; justify-content: center; }

/* ══════════════════════════════════════
   BUTTONS — Glassmorphism
   ══════════════════════════════════════ */
.st-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 100px;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}

.st-btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 8px 24px rgba(79, 124, 255, 0.35);
}
.st-btn-primary:hover {
  background: var(--gradient-brand-h);
  box-shadow: 0 10px 34px rgba(124, 92, 255, 0.55);
  transform: translateY(-2px);
}

.st-btn-glass {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  color: #fff;
}
.st-btn-glass:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--glass-border-strong);
  box-shadow: 0 0 24px rgba(124, 92, 255, 0.28);
}

.st-btn-nav {
  padding: 10px 20px;
  font-size: 13.5px;
}

.st-btn-sm { padding: 10px 20px; font-size: 13.5px; }
.st-btn-full { width: 100%; justify-content: center; }

/* ══════════════════════════════════════
   HERO — H12 Two-Column Equal + Glass Panel
   ══════════════════════════════════════ */
.st-hero {
  padding: 168px 0 100px;
  position: relative;
  overflow: hidden;
}
.st-hero::before {
  content: '';
  position: absolute;
  top: -180px; right: -160px;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.35), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}
.st-hero::after {
  content: '';
  position: absolute;
  bottom: -220px; left: -180px;
  width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(79, 124, 255, 0.28), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}

.st-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.st-hero-text h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 22px;
  color: #fff;
}

.st-hero-text p {
  font-size: 17px;
  color: var(--text-2);
  max-width: 460px;
  line-height: 1.75;
  margin-bottom: 34px;
}

.st-hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.st-hero-trust {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}
.st-hero-trust-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--text-2);
  font-weight: 500;
}
.st-hero-trust-item svg { flex-shrink: 0; color: var(--accent-h); }

.st-hero-visual {
  position: relative;
}
.st-hero-visual-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  aspect-ratio: 4/4.6;
}
.st-hero-visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.st-hero-visual-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 13, 36, 0) 40%, rgba(10, 13, 36, 0.75) 100%);
}

.st-hero-glass-card {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.st-hero-glass-card .st-hgc-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.st-hero-glass-card strong { display: block; font-size: 15px; color: #fff; font-weight: 700; }
.st-hero-glass-card span { font-size: 12.5px; color: var(--text-2); }

.st-hero-badge-float {
  position: absolute;
  top: 24px;
  right: 24px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(18px);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 9px 16px;
  font-size: 12.5px;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 7px;
}
.st-hero-badge-float .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

/* ══════════════════════════════════════
   FEATURE-ICON-ROW
   ══════════════════════════════════════ */
.st-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
}
.st-feature-item {
  text-align: left;
}
.st-feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent-h);
}
.st-feature-item h3 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.st-feature-item p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.65;
}

/* ══════════════════════════════════════
   STAT-BAR
   ══════════════════════════════════════ */
.st-stats-wrap {
  background: var(--surface);
  backdrop-filter: blur(18px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 48px clamp(20px, 4vw, 56px);
}
.st-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.st-stat-item {
  text-align: center;
  padding: 0 8px;
  position: relative;
}
.st-stat-item + .st-stat-item::before {
  content: '';
  position: absolute;
  left: -10px; top: 6px; bottom: 6px;
  width: 1px;
  background: var(--border);
}
.st-stat-num {
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  letter-spacing: -1px;
}
.st-stat-label {
  font-size: 13.5px;
  color: var(--text-2);
  margin-top: 8px;
  font-weight: 500;
}

/* ══════════════════════════════════════
   BENTO-GRID — dịch vụ nổi bật
   ══════════════════════════════════════ */
.st-bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 210px;
  gap: 20px;
}
.st-bento-item {
  position: relative;
  border-radius: var(--radius-md);
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  padding: 26px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.st-bento-item:hover {
  transform: translateY(-6px);
  border-color: var(--glass-border-strong);
  box-shadow: 0 20px 46px rgba(20, 12, 60, 0.4);
}
.st-bento-item.big { grid-column: span 2; grid-row: span 2; }
.st-bento-item.wide { grid-column: span 2; }
.st-bento-item.tall { grid-row: span 2; }

.st-bento-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: .55;
  transition: transform .5s ease, opacity .3s ease;
}
.st-bento-item:hover img { transform: scale(1.06); opacity: .68; }
.st-bento-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 13, 36, 0.1) 0%, rgba(8, 10, 28, 0.92) 100%);
  z-index: 1;
}
.st-bento-content {
  position: relative;
  z-index: 2;
}
.st-bento-icon {
  width: 40px; height: 40px;
  border-radius: 11px;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.st-bento-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.st-bento-content p {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.6;
}
.st-bento-tag {
  position: absolute;
  top: 20px; right: 20px;
  z-index: 2;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  color: var(--accent-h);
}

/* ══════════════════════════════════════
   FULL-BLEED — công nghệ preview
   ══════════════════════════════════════ */
.st-tech-bleed {
  position: relative;
  width: 100%;
  padding: clamp(72px, 9vw, 120px) 0;
  background: linear-gradient(120deg, rgba(79, 124, 255, 0.12), rgba(124, 92, 255, 0.14)),
    var(--dark2);
  overflow: hidden;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.st-tech-bleed-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.st-tech-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
}
.st-tech-visual img { width: 100%; height: 100%; object-fit: cover; opacity: .82; }
.st-tech-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 30px;
}
.st-tech-list-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--glass-border);
}
.st-tech-list-item .num {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-h);
  flex-shrink: 0;
  width: 26px;
}
.st-tech-list-item h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.st-tech-list-item p { font-size: 13.5px; color: var(--text-2); line-height: 1.6; }

/* ══════════════════════════════════════
   TESTIMONIALS — Grid Cards
   ══════════════════════════════════════ */
.st-testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.st-testi-card {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  transition: transform .3s ease, border-color .3s ease;
}
.st-testi-card:hover {
  transform: translateY(-5px);
  border-color: var(--glass-border-strong);
}
.st-testi-stars { color: #f59e0b; font-size: 14px; margin-bottom: 16px; letter-spacing: 2px; }
.st-testi-card p {
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 22px;
}
.st-testi-user { display: flex; align-items: center; gap: 12px; }
.st-testi-user img {
  width: 44px; height: 44px; border-radius: 50%; object-fit: cover;
  border: 1px solid var(--glass-border);
}
.st-testi-user strong { display: block; font-size: 14px; color: #fff; font-weight: 700; }
.st-testi-user span { font-size: 12.5px; color: var(--text-3); }

/* ══════════════════════════════════════
   CTA
   ══════════════════════════════════════ */
.st-cta {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(79, 124, 255, 0.18), rgba(124, 92, 255, 0.22));
  border: 1px solid var(--glass-border);
  padding: clamp(46px, 6vw, 76px);
  text-align: center;
  overflow: hidden;
}
.st-cta::before {
  content: '';
  position: absolute;
  top: -120px; left: 50%; transform: translateX(-50%);
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.4), transparent 70%);
  filter: blur(10px);
}
.st-cta-inner { position: relative; z-index: 1; }
.st-cta h2 {
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.st-cta p {
  font-size: 15.5px;
  color: var(--text-2);
  max-width: 480px;
  margin: 0 auto 30px;
}
.st-cta-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ══════════════════════════════════════
   FOOTER — Dark Gradient Glass Panel
   ══════════════════════════════════════ */
#st-footer {
  margin-top: 40px;
  padding: 70px 0 28px;
  background: linear-gradient(180deg, var(--dark2) 0%, var(--dark) 100%);
  border-top: 1px solid var(--border-light);
}
.st-footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.st-footer-brand p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  margin: 16px 0 22px;
  max-width: 300px;
}
.st-footer-social { display: flex; gap: 10px; }
.st-footer-social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-2);
  transition: all .2s ease;
}
.st-footer-social a:hover { background: var(--gradient-brand); color: #fff; border-color: transparent; }

.st-footer-col h4 {
  font-size: 13.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #fff;
  margin-bottom: 18px;
}
.st-footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.st-footer-col a, .st-footer-col li {
  font-size: 14px;
  color: var(--text-2);
  transition: color .2s ease;
}
.st-footer-col a:hover { color: var(--accent-h); }

.st-footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 13px;
  color: var(--text-3);
}
.st-footer-bottom-links { display: flex; gap: 20px; }

/* ══════════════════════════════════════
   ZALO FLOAT
   ══════════════════════════════════════ */
.st-zalo-float {
  position: fixed;
  bottom: 26px;
  right: 26px;
  z-index: 998;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #0068FF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(0, 104, 255, 0.5);
  animation: st-pulse 2.4s infinite;
}
@keyframes st-pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 104, 255, 0.5), 0 10px 30px rgba(0, 104, 255, 0.5); }
  70% { box-shadow: 0 0 0 14px rgba(0, 104, 255, 0), 0 10px 30px rgba(0, 104, 255, 0.5); }
  100% { box-shadow: 0 0 0 0 rgba(0, 104, 255, 0), 0 10px 30px rgba(0, 104, 255, 0.5); }
}

/* ══════════════════════════════════════
   PAGE HEADER (inner pages)
   ══════════════════════════════════════ */
.st-page-header {
  padding: 160px 0 70px;
  text-align: center;
  position: relative;
}
.st-page-header::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%; transform: translateX(-50%);
  width: 500px; height: 400px;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.28), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
}
.st-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
  margin-top: 14px;
  position: relative;
  z-index: 1;
}
.st-breadcrumb a { color: var(--text-2); }
.st-breadcrumb a:hover { color: var(--accent-h); }

/* ══════════════════════════════════════
   GRID-CARDS — dịch vụ list page
   ══════════════════════════════════════ */
.st-grid-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.st-service-card {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.st-service-card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-border-strong);
  box-shadow: 0 20px 46px rgba(20, 12, 60, 0.4);
}
.st-service-thumb { position: relative; aspect-ratio: 16/11; overflow: hidden; }
.st-service-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.st-service-card:hover .st-service-thumb img { transform: scale(1.08); }
.st-service-price {
  position: absolute;
  top: 14px; right: 14px;
  background: rgba(10, 13, 36, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 700;
  color: #fff;
}
.st-service-body { padding: 22px 22px 26px; }
.st-service-body .tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent-h);
  margin-bottom: 10px;
  display: block;
}
.st-service-body h3 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.st-service-body p { font-size: 14px; color: var(--text-2); line-height: 1.65; margin-bottom: 18px; }
.st-service-link { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; font-weight: 600; color: var(--accent-h); }
.st-service-link svg { transition: transform .2s ease; }
.st-service-card:hover .st-service-link svg { transform: translateX(4px); }

/* ══════════════════════════════════════
   TIMELINE — công nghệ / quy trình
   ══════════════════════════════════════ */
.st-timeline { position: relative; max-width: 760px; margin: 0 auto; }
.st-timeline::before {
  content: '';
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--border) 10%, var(--border) 90%, transparent);
  transform: translateX(-50%);
}
.st-tl-item {
  display: grid;
  grid-template-columns: 1fr 40px 1fr;
  align-items: center;
  gap: 0;
  margin-bottom: 44px;
  position: relative;
}
.st-tl-item:last-child { margin-bottom: 0; }
.st-tl-dot {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 14px;
  box-shadow: 0 0 0 6px rgba(10, 13, 36, 1), 0 0 20px rgba(124, 92, 255, 0.5);
  z-index: 1;
}
.st-tl-content {
  background: var(--surface);
  backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
}
.st-tl-content h4 { font-size: 15.5px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.st-tl-content p { font-size: 13.5px; color: var(--text-2); line-height: 1.6; }
.st-tl-item:nth-child(odd) .st-tl-content { grid-column: 1; text-align: right; }
.st-tl-item:nth-child(odd) .st-tl-dot { grid-column: 2; }
.st-tl-item:nth-child(even) .st-tl-content { grid-column: 3; }
.st-tl-item:nth-child(even) .st-tl-dot { grid-column: 2; }

/* ══════════════════════════════════════
   TEAM / BÁC SĨ — Alternating strips + grid
   ══════════════════════════════════════ */
.st-doctor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.st-doctor-card {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-align: center;
  transition: transform .3s ease, border-color .3s ease;
}
.st-doctor-card:hover { transform: translateY(-6px); border-color: var(--glass-border-strong); }
.st-doctor-photo { aspect-ratio: 3/3.4; overflow: hidden; }
.st-doctor-photo img { width: 100%; height: 100%; object-fit: cover; }
.st-doctor-body { padding: 22px 18px 26px; }
.st-doctor-body h3 { font-size: 16.5px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.st-doctor-body .role { font-size: 13px; color: var(--accent-h); font-weight: 600; margin-bottom: 12px; display: block; }
.st-doctor-body p { font-size: 13px; color: var(--text-2); line-height: 1.6; }

.st-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 90px;
}
.st-strip:last-child { margin-bottom: 0; }
.st-strip.rev .st-strip-media { order: 2; }
.st-strip.rev .st-strip-text { order: 1; }
.st-strip-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  aspect-ratio: 5/4;
}
.st-strip-media img { width: 100%; height: 100%; object-fit: cover; }
.st-strip-text h3 { font-size: 24px; font-weight: 700; color: #fff; margin-bottom: 14px; letter-spacing: -0.3px; }
.st-strip-text p { font-size: 15px; color: var(--text-2); line-height: 1.75; margin-bottom: 18px; }
.st-strip-list { display: flex; flex-direction: column; gap: 12px; }
.st-strip-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--text-2); }
.st-strip-list svg { flex-shrink: 0; color: var(--accent-h); margin-top: 2px; }

/* ══════════════════════════════════════
   FORMS — booking / contact
   ══════════════════════════════════════ */
.st-form-panel {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 46px);
}
.st-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.st-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.st-field label { font-size: 13.5px; font-weight: 600; color: var(--text-2); }
.st-field input, .st-field select, .st-field textarea {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-size: 14.5px;
  color: #fff;
  transition: border-color .2s ease, background .2s ease;
}
.st-field input::placeholder, .st-field textarea::placeholder { color: var(--text-3); }
.st-field input:focus, .st-field select:focus, .st-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.08);
}
.st-field textarea { resize: vertical; min-height: 110px; }
.st-form-note { font-size: 12.5px; color: var(--text-3); margin-top: 6px; line-height: 1.6; }

.st-booking-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}
.st-booking-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.st-info-card {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.st-info-card .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.st-info-card h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.st-info-card p { font-size: 13.5px; color: var(--text-2); line-height: 1.6; }

.st-map-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  aspect-ratio: 16/9;
  position: relative;
  background: var(--surface);
}
.st-map-frame iframe { width: 100%; height: 100%; border: 0; filter: grayscale(.3) invert(.92) contrast(.9); }

/* ══════════════════════════════════════
   REVEAL ANIMATION
   ══════════════════════════════════════ */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
[data-reveal].visible { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: .1s; }
[data-reveal-delay="2"] { transition-delay: .2s; }
[data-reveal-delay="3"] { transition-delay: .3s; }
[data-reveal-delay="4"] { transition-delay: .4s; }

/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */
@media (max-width: 1100px) {
  .st-bento { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 200px; }
  .st-bento-item.big { grid-column: span 2; grid-row: span 1; }
  .st-doctor-grid { grid-template-columns: repeat(2, 1fr); }
  .st-footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 960px) {
  .st-nav-links { display: none; }
  .st-burger { display: flex; }
  .st-hero-grid { grid-template-columns: 1fr; }
  .st-hero-visual { order: -1; }
  .st-features { grid-template-columns: repeat(2, 1fr); }
  .st-stats { grid-template-columns: repeat(2, 1fr); }
  .st-stat-item:nth-child(3)::before, .st-stat-item + .st-stat-item::before { display: none; }
  .st-tech-bleed-grid { grid-template-columns: 1fr; }
  .st-testi-grid { grid-template-columns: 1fr; }
  .st-grid-cards { grid-template-columns: repeat(2, 1fr); }
  .st-booking-grid { grid-template-columns: 1fr; }
  .st-strip, .st-strip.rev { grid-template-columns: 1fr; gap: 28px; }
  .st-strip.rev .st-strip-media { order: 1; }
  .st-strip.rev .st-strip-text { order: 2; }
  .st-tl-item { grid-template-columns: 30px 1fr; }
  .st-tl-item:nth-child(odd) .st-tl-content, .st-tl-item:nth-child(even) .st-tl-content { grid-column: 2; text-align: left; }
  .st-tl-item:nth-child(odd) .st-tl-dot, .st-tl-item:nth-child(even) .st-tl-dot { grid-column: 1; }
  .st-timeline::before { left: 15px; }
}

@media (max-width: 640px) {
  .st-features { grid-template-columns: 1fr; }
  .st-stats { grid-template-columns: 1fr 1fr; }
  .st-bento { grid-template-columns: 1fr; grid-auto-rows: 180px; }
  .st-bento-item.big, .st-bento-item.wide { grid-column: span 1; grid-row: span 1; }
  .st-grid-cards { grid-template-columns: 1fr; }
  .st-doctor-grid { grid-template-columns: 1fr 1fr; }
  .st-form-row { grid-template-columns: 1fr; }
  .st-footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .st-footer-bottom { flex-direction: column; align-items: flex-start; }
  .st-cta-actions { flex-direction: column; width: 100%; }
  .st-cta-actions .st-btn { width: 100%; justify-content: center; }
}