/* Vinamian — bản mẫu giao diện. Sẽ chuyển thành theme WordPress ở giai đoạn sau. */

:root {
  --navy-950: #050b1a;
  --navy-900: #081329;
  --navy-800: #0e1d3d;
  --navy-700: #17295a;
  --ink: #0d1526;
  --body: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f6f8fb;
  --white: #ffffff;
  --teal: #22d3c5;
  --teal-600: #0ea5a0;
  --teal-700: #0b7f7b;
  --blue: #3b82f6;
  --warm: #ff8a4c;
  --on-dark: #e6edf9;
  --on-dark-muted: #9fb0cf;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 12px 32px -14px rgba(8, 19, 41, 0.22);
  --max: 1200px;
  --gutter: clamp(16px, 4vw, 32px);
  --header-h: 68px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
body {
  margin: 0;
  font-family: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.2; margin: 0 0 0.5em; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 650; }
p { margin: 0 0 1em; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* Dải thông báo bản mẫu */
.proto-bar {
  background: #fff4cc;
  color: #6b4e00;
  font-size: 13px;
  text-align: center;
  padding: 6px var(--gutter);
}
.ph { background: #fff4cc; color: #6b4e00; border-radius: 4px; padding: 0 4px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  /* Nền đặc, không làm mờ nền phía sau: hiệu ứng làm mờ trên cảnh 3D động rất tốn tài nguyên */
  background: rgba(5, 11, 26, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.3s;
}
.site-header.scrolled { background: rgba(5, 11, 26, 0.98); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 28px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; font-weight: 700; font-size: 1.2rem; letter-spacing: -0.01em; }
.logo-mark { width: 30px; height: 30px; flex: none; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a {
  color: var(--on-dark-muted);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.nav a:hover, .nav a[aria-current="page"] { color: #fff; background: rgba(255, 255, 255, 0.06); }
.header-cta { flex: none; }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid rgba(255,255,255,.18); color: #fff; border-radius: 10px; width: 42px; height: 42px; cursor: pointer; }
.menu-btn svg { width: 20px; height: 20px; }

/* Nút */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--teal); color: var(--navy-950); box-shadow: 0 8px 24px -8px rgba(34, 211, 197, 0.6); }
.btn-primary:hover { background: #3ee6d8; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.28); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.6); }
.btn-dark { background: var(--navy-900); color: #fff; }
.btn-outline { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--teal-600); color: var(--teal-700); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn svg { width: 18px; height: 18px; }

/* Hero trang chủ */
.hero {
  position: relative;
  min-height: min(calc(100svh - var(--header-h)), 900px);
  background:
    radial-gradient(1200px 600px at 75% 40%, rgba(34, 211, 197, 0.10), transparent 60%),
    radial-gradient(900px 500px at 10% 90%, rgba(59, 130, 246, 0.12), transparent 60%),
    var(--navy-950);
  color: var(--on-dark);
  overflow: hidden;
  display: flex;
  align-items: center;
}
/* Khung vẽ 3D chỉ phủ nửa phải để giảm số điểm ảnh phải vẽ */
.hero-canvas { position: absolute; top: 0; right: 0; width: 56%; height: 100%; display: block; opacity: 0; transition: opacity 1.2s ease; }
.webgl-ready .hero-canvas { opacity: 1; }
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(5, 11, 26, 0.85) 0%, rgba(5, 11, 26, 0.4) 40%, rgba(5, 11, 26, 0) 55%);
  z-index: 1;
}
.hero-fallback {
  position: absolute;
  inset: 0;
  display: none;
  background:
    radial-gradient(circle at 72% 45%, rgba(34, 211, 197, 0.25), transparent 35%),
    radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.2), transparent 30%);
}
.no-webgl .hero-fallback { display: block; }
.hero-content { position: relative; z-index: 2; width: 100%; padding-top: 64px; padding-bottom: 96px; }
.hero-text { max-width: 640px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  background: rgba(34, 211, 197, 0.1);
  border: 1px solid rgba(34, 211, 197, 0.28);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px rgba(34, 211, 197, 0.18); animation: pulse 2.2s infinite; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 3px rgba(34, 211, 197, 0.25); } 50% { box-shadow: 0 0 0 7px rgba(34, 211, 197, 0); } }
.hero h1 {
  color: #fff;
  font-size: clamp(2.4rem, 5.2vw, 4.1rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.06;
  margin-bottom: 22px;
}
.hero h1 .grad { background: linear-gradient(90deg, var(--teal), #7cc4ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lead { font-size: clamp(1.05rem, 1.6vw, 1.2rem); color: var(--on-dark-muted); max-width: 540px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 44px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 28px; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { color: #fff; font-size: 1.6rem; font-weight: 700; letter-spacing: -0.02em; }
.hero-stats span { font-size: 13px; color: var(--on-dark-muted); }
.map-note { position: absolute; z-index: 2; right: var(--gutter); bottom: 18px; font-size: 12px; color: rgba(159, 176, 207, 0.75); }
.scroll-hint { position: absolute; z-index: 2; left: 50%; bottom: 20px; transform: translateX(-50%); width: 24px; height: 38px; border: 2px solid rgba(255,255,255,.25); border-radius: 14px; }
.scroll-hint::after { content: ''; position: absolute; left: 50%; top: 7px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--teal); animation: scroll 1.8s infinite; }
@keyframes scroll { 0% { transform: translateY(0); opacity: 1; } 100% { transform: translateY(12px); opacity: 0; } }

/* Section chung */
.section { padding: clamp(64px, 9vw, 112px) 0; }
.section-dark { background: var(--navy-950); color: var(--on-dark); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-white { background: var(--white); }
.section-head { max-width: 720px; margin-bottom: clamp(32px, 5vw, 56px); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { font-size: 1.08rem; color: var(--muted); }
.section-dark .section-head p { color: var(--on-dark-muted); }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal-700); margin-bottom: 14px; }
.section-dark .eyebrow { color: var(--teal); }

.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card p { margin: 0; color: var(--muted); }

/* Vấn đề */
.problem .num { font-size: 2.4rem; font-weight: 750; color: var(--teal-600); letter-spacing: -0.03em; line-height: 1; margin-bottom: 16px; display: block; }

/* Loại doanh nghiệp */
.segments { grid-template-columns: repeat(5, 1fr); }
.segment { display: flex; flex-direction: column; text-decoration: none; padding: 24px; }
.segment .icon { width: 44px; height: 44px; border-radius: 12px; background: rgba(34, 211, 197, 0.12); color: var(--teal-700); display: grid; place-items: center; margin-bottom: 18px; }
.segment .icon svg { width: 24px; height: 24px; }
.segment h3 { font-size: 1.02rem; margin-bottom: 8px; }
.segment p { font-size: 14px; margin-bottom: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.tag { font-size: 12px; font-weight: 600; color: var(--ink); background: var(--bg); border: 1px solid var(--line); padding: 3px 9px; border-radius: 999px; }
.segment:hover { border-color: rgba(14, 165, 160, 0.45); }

/* Ba lớp */
.layers-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.layer-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.layer-item {
  display: grid;
  grid-template-columns: 14px 1fr;
  gap: 16px;
  padding: 20px 22px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  cursor: default;
  transition: background 0.25s, border-color 0.25s;
}
.layer-item:hover, .layer-item.active { background: rgba(255, 255, 255, 0.06); border-color: rgba(34, 211, 197, 0.35); }
.layer-item .swatch { width: 14px; height: 14px; border-radius: 4px; margin-top: 6px; }
.layer-item h3 { margin-bottom: 4px; font-size: 1.05rem; }
.layer-item p { margin: 0 0 8px; color: var(--on-dark-muted); font-size: 15px; }
.layer-item .apps-inline { font-size: 13px; color: var(--teal); font-weight: 600; }

.stack { position: relative; height: 440px; perspective: 1400px; }
.plane {
  position: absolute;
  left: 50%;
  top: 56%;
  width: 270px;
  height: 270px;
  margin: -135px 0 0 -135px;
  border-radius: 26px;
  transform: rotateX(60deg) rotateZ(-45deg) translateZ(var(--z));
  transition: transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.4s, opacity 0.4s;
  border: 1px solid var(--edge);
  background: linear-gradient(135deg, var(--fill-a), var(--fill-b));
  box-shadow: 0 0 60px -10px var(--glow) inset, 0 30px 60px -20px rgba(0, 0, 0, 0.6);
}
.plane::before {
  content: '';
  position: absolute;
  inset: 18px;
  border-radius: 16px;
  background-image: radial-gradient(var(--edge) 1.2px, transparent 1.4px);
  background-size: 22px 22px;
  opacity: 0.5;
}
.plane.core { --z: 0px; --edge: rgba(255, 255, 255, 0.35); --fill-a: rgba(255, 255, 255, 0.12); --fill-b: rgba(255, 255, 255, 0.03); --glow: rgba(255, 255, 255, 0.25); }
.plane.l1 { --z: 40px; --edge: rgba(34, 211, 197, 0.7); --fill-a: rgba(34, 211, 197, 0.22); --fill-b: rgba(34, 211, 197, 0.05); --glow: rgba(34, 211, 197, 0.4); }
.plane.l2 { --z: 80px; --edge: rgba(96, 165, 250, 0.75); --fill-a: rgba(59, 130, 246, 0.24); --fill-b: rgba(59, 130, 246, 0.05); --glow: rgba(59, 130, 246, 0.4); }
.plane.l3 { --z: 120px; --edge: rgba(255, 138, 76, 0.75); --fill-a: rgba(255, 138, 76, 0.22); --fill-b: rgba(255, 138, 76, 0.04); --glow: rgba(255, 138, 76, 0.35); }
.stack.open .plane.core { --z: -40px; }
.stack.open .plane.l1 { --z: 50px; }
.stack.open .plane.l2 { --z: 140px; }
.stack.open .plane.l3 { --z: 230px; }
.stack[data-focus] .plane { opacity: 0.35; }
.stack[data-focus="core"] .plane.core, .stack[data-focus="l1"] .plane.l1, .stack[data-focus="l2"] .plane.l2, .stack[data-focus="l3"] .plane.l3 { opacity: 1; }
.stack-label { position: absolute; left: 0; right: 0; bottom: 0; text-align: center; font-size: 13px; color: var(--on-dark-muted); }
@media (hover: none) { .stack-label { display: none; } }

/* Danh mục ứng dụng */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filter {
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--body);
  cursor: pointer;
  transition: all 0.2s;
}
.filter:hover { border-color: var(--teal-600); }
.filter[aria-pressed="true"] { background: var(--navy-900); color: #fff; border-color: var(--navy-900); }
.app-card { display: flex; flex-direction: column; gap: 14px; padding: 24px; text-decoration: none; position: relative; }
.app-top { display: flex; align-items: center; gap: 14px; }
.mono {
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 13px;
  display: grid;
  place-items: center;
  font-weight: 750;
  font-size: 15px;
  color: #fff;
  letter-spacing: -0.02em;
}
.mono.van-hanh { background: linear-gradient(135deg, #14b8a6, #0b7f7b); }
.mono.dung-chung { background: linear-gradient(135deg, #60a5fa, #2563eb); }
.mono.ket-noi { background: linear-gradient(135deg, #ffa86b, #f0652a); }
.app-name { font-weight: 700; color: var(--ink); font-size: 1.05rem; line-height: 1.25; }
.app-name small { display: block; font-weight: 500; font-size: 12px; color: var(--muted); margin-top: 2px; }
.app-for { font-size: 13px; font-weight: 600; color: var(--teal-700); }
.app-desc { font-size: 14.5px; color: var(--muted); margin: 0; flex: 1; }
.app-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 14px; border-top: 1px dashed var(--line); }
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 650; padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.founding { color: #0b7f7b; background: rgba(34, 211, 197, 0.14); }
.badge.roadmap { color: #64748b; background: #eef2f7; }
.badge.building { color: #2563eb; background: rgba(59, 130, 246, 0.12); }
.badge.live { color: #15803d; background: rgba(34, 197, 94, 0.14); }
.app-link { font-size: 14px; font-weight: 600; color: var(--ink); display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.app-card:hover .app-link { color: var(--teal-700); }
.app-card.is-founding { border-color: rgba(14, 165, 160, 0.4); }
.legend { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 24px; font-size: 13px; color: var(--muted); }

/* Vì sao một nền tảng */
.why { counter-reset: why; }
.why .card { background: transparent; border: none; padding: 0; }
.why .card:hover { transform: none; box-shadow: none; }
.why .card::before {
  counter-increment: why;
  content: '0' counter(why);
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--teal-700);
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 2px solid var(--line);
}

/* Khách sáng lập */
.founding-box {
  position: relative;
  border-radius: 28px;
  padding: clamp(28px, 5vw, 56px);
  background:
    radial-gradient(600px 300px at 90% 0%, rgba(34, 211, 197, 0.22), transparent 60%),
    radial-gradient(500px 300px at 0% 100%, rgba(255, 138, 76, 0.16), transparent 60%),
    var(--navy-900);
  color: var(--on-dark);
  overflow: hidden;
}
.founding-box h2 { color: #fff; }
.founding-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: start; }
.perks { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 12px; }
.perks li { display: grid; grid-template-columns: 22px 1fr; gap: 12px; color: var(--on-dark); }
.perks svg { width: 22px; height: 22px; color: var(--teal); }
.seats { display: grid; gap: 12px; }
.seat {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}
.seat:hover { border-color: rgba(34, 211, 197, 0.5); background: rgba(255, 255, 255, 0.08); }
.seat .mono { width: 40px; height: 40px; font-size: 14px; }
.seat-info { flex: 1; min-width: 0; }
.seat-info strong { display: block; color: #fff; }
.seat-info span { font-size: 13px; color: var(--on-dark-muted); }
.seat-count { text-align: right; font-size: 13px; color: var(--on-dark-muted); white-space: nowrap; }
.seat-count b { display: block; color: var(--teal); font-size: 1.1rem; }
.seat-bar { height: 4px; border-radius: 2px; background: rgba(255, 255, 255, 0.1); margin-top: 6px; overflow: hidden; }
.seat-bar i { display: block; height: 100%; width: 4%; background: var(--teal); }
.fine { font-size: 13px; color: var(--on-dark-muted); margin-top: 16px; }

/* Cam kết */
.commit { display: grid; grid-template-columns: 40px 1fr; gap: 16px; align-items: start; }
.commit .icon { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: var(--navy-900); color: var(--teal); }
.commit .icon svg { width: 20px; height: 20px; }
.commit h3 { font-size: 1rem; margin-bottom: 4px; }
.commit p { margin: 0; font-size: 14.5px; color: var(--muted); }

/* Kiến thức */
.post { display: flex; flex-direction: column; text-decoration: none; padding: 0; overflow: hidden; }
.post-thumb { aspect-ratio: 16 / 9; background: linear-gradient(135deg, var(--navy-800), var(--navy-700)); position: relative; overflow: hidden; }
.post-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(34, 211, 197, 0.55) 1.2px, transparent 1.5px);
  background-size: 18px 18px;
  mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 70%);
}
.post-body { padding: 22px 24px 26px; }
.post-tag { font-size: 12px; font-weight: 700; color: var(--teal-700); text-transform: uppercase; letter-spacing: 0.06em; }
.post h3 { margin: 8px 0 8px; font-size: 1.05rem; }
.post p { font-size: 14px; }

/* Form đăng ký */
.signup-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.contact-list li { display: flex; align-items: center; gap: 12px; }
.contact-list .icon { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgba(34, 211, 197, 0.12); color: var(--teal-700); flex: none; }
.contact-list svg { width: 18px; height: 18px; }
.contact-list a { text-decoration: none; font-weight: 600; color: var(--ink); }
.form-card { background: var(--white); border: 1px solid var(--line); border-radius: 22px; padding: clamp(22px, 4vw, 36px); box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label, .field legend { font-size: 14px; font-weight: 600; color: var(--ink); }
.field .req { color: #e11d48; }
.field input, .field select, .field textarea {
  font: inherit;
  font-size: 15px;
  padding: 11px 14px;
  border: 1px solid #cfd8e3;
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--ink);
  width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 88px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--teal-600); box-shadow: 0 0 0 4px rgba(34, 211, 197, 0.18); }
fieldset.field { border: none; padding: 0; margin: 0; }
.checks { display: flex; flex-wrap: wrap; gap: 8px; }
.check { position: relative; }
.check input { position: absolute; opacity: 0; pointer-events: none; }
.check span {
  display: inline-block;
  font-size: 13.5px;
  font-weight: 600;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid #cfd8e3;
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
}
.check input:checked + span { background: var(--navy-900); border-color: var(--navy-900); color: #fff; }
.check input:focus-visible + span { box-shadow: 0 0 0 4px rgba(34, 211, 197, 0.3); }
.radios { display: flex; gap: 18px; flex-wrap: wrap; font-size: 15px; }
.radios label { font-weight: 500; display: flex; gap: 8px; align-items: center; }
.field input[type="checkbox"], .field input[type="radio"] { width: auto; padding: 0; flex: none; accent-color: var(--teal-700); }
.consent { display: flex; flex-direction: row !important; gap: 10px; align-items: flex-start; font-size: 13.5px; color: var(--muted); font-weight: 400 !important; }
.consent input { margin-top: 5px; width: 16px !important; height: 16px; }
.form-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 8px; }
.form-note { font-size: 12.5px; color: var(--muted); }
.form-success { display: none; text-align: center; padding: 40px 10px; }
.form-success .ok { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; margin: 0 auto 16px; background: rgba(34, 211, 197, 0.15); color: var(--teal-700); }
.form-card.done form { display: none; }
.form-card.done .form-success { display: block; }

/* Footer */
.site-footer { background: var(--navy-950); color: var(--on-dark-muted); padding: 72px 0 32px; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 36px; }
.site-footer h4 { color: #fff; font-size: 14px; margin-bottom: 14px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-legal { margin-top: 48px; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, 0.08); display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; font-size: 13px; }

/* Trang ứng dụng */
.page-hero {
  position: relative;
  background:
    radial-gradient(800px 400px at 80% 30%, rgba(34, 211, 197, 0.14), transparent 60%),
    var(--navy-950);
  color: var(--on-dark);
  overflow: hidden;
}
.page-hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 32px; align-items: center; min-height: 520px; padding-top: 56px; padding-bottom: 64px; }
.breadcrumb { font-size: 13px; color: var(--on-dark-muted); margin-bottom: 20px; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: #fff; }
.page-hero h1 { color: #fff; font-size: clamp(2.2rem, 4.6vw, 3.6rem); font-weight: 750; letter-spacing: -0.03em; line-height: 1.08; margin-bottom: 18px; }
.page-hero .lead { font-size: 1.12rem; color: var(--on-dark-muted); max-width: 560px; margin-bottom: 28px; }
.title-row { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.title-row .badge.founding { background: rgba(34, 211, 197, 0.16); color: var(--teal); }
.app-visual { position: relative; aspect-ratio: 1; max-height: 440px; width: 100%; }
.app-visual canvas { width: 100%; height: 100%; display: block; opacity: 0; transition: opacity 1s; }
.app-visual.ready canvas { opacity: 1; }
.app-visual .fallback { position: absolute; inset: 15%; border-radius: 50%; background: radial-gradient(circle, rgba(34, 211, 197, 0.35), transparent 65%); display: none; }
.no-webgl .app-visual .fallback { display: block; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.pain-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.pain-list li { display: grid; grid-template-columns: 28px 1fr; gap: 12px; padding: 18px 20px; border-radius: 14px; background: var(--white); border: 1px solid var(--line); }
.pain-list svg { width: 24px; height: 24px; color: #e11d48; }
.who-list { display: grid; gap: 10px; }
.who-list div { padding: 14px 18px; border-left: 3px solid var(--teal); background: var(--white); border-radius: 0 12px 12px 0; }

.features { grid-template-columns: repeat(3, 1fr); }
.feature .icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: rgba(34, 211, 197, 0.12); color: var(--teal-700); margin-bottom: 16px; }
.feature .icon svg { width: 22px; height: 22px; }

.concept { background: var(--navy-900); border-radius: 22px; padding: clamp(16px, 3vw, 28px); position: relative; }
.concept-tag { position: absolute; top: 14px; right: 16px; font-size: 12px; color: #ffd27a; background: rgba(255, 210, 122, 0.12); border: 1px solid rgba(255, 210, 122, 0.3); padding: 3px 10px; border-radius: 999px; }
.wire { display: grid; grid-template-columns: 160px 1fr; gap: 14px; min-height: 340px; margin-top: 30px; }
.wire-side, .wire-main > div { border: 1px dashed rgba(159, 176, 207, 0.35); border-radius: 12px; }
.wire-side { padding: 14px; display: grid; gap: 10px; align-content: start; }
.wire-side i { display: block; height: 10px; border-radius: 4px; background: rgba(159, 176, 207, 0.25); }
.wire-side i:first-child { background: rgba(34, 211, 197, 0.5); width: 70%; }
.wire-main { display: grid; grid-template-rows: auto 1fr; gap: 14px; }
.wire-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; border: none !important; }
.wire-kpi { border: 1px dashed rgba(159, 176, 207, 0.35); border-radius: 12px; padding: 14px; }
.wire-kpi small { display: block; font-size: 11px; color: var(--on-dark-muted); }
.wire-kpi b { color: #fff; font-size: 1.1rem; }
.wire-table { padding: 14px; display: grid; gap: 10px; align-content: start; }
.wire-row { display: grid; grid-template-columns: 1.2fr 1fr 0.8fr 0.7fr; gap: 10px; align-items: center; }
.wire-row i { height: 9px; border-radius: 4px; background: rgba(159, 176, 207, 0.22); }
.wire-row .st { height: 18px; border-radius: 9px; width: 70%; }
.wire-row .st.a { background: rgba(34, 211, 197, 0.35); }
.wire-row .st.b { background: rgba(255, 138, 76, 0.35); }
.wire-row.head i { background: rgba(159, 176, 207, 0.45); height: 7px; }
.concept-caption { margin: 14px 0 0; font-size: 13px; color: var(--on-dark-muted); }

.chips-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip-app { display: inline-flex; align-items: center; gap: 10px; padding: 8px 14px 8px 8px; background: var(--white); border: 1px solid var(--line); border-radius: 999px; font-weight: 600; font-size: 14px; color: var(--ink); text-decoration: none; }
.chip-app .mono { width: 28px; height: 28px; border-radius: 8px; font-size: 11px; }

.pricing { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
.price { display: flex; flex-direction: column; }
.price.featured { border: 2px solid var(--teal-600); position: relative; }
.price.featured::before { content: 'Phù hợp nhiều đơn vị nhất'; position: absolute; top: -12px; left: 24px; font-size: 12px; font-weight: 700; color: #fff; background: var(--teal-700); padding: 3px 10px; border-radius: 999px; }
.price h3 { margin-bottom: 4px; }
.price .for { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.price .amount { font-size: 2rem; font-weight: 750; color: var(--ink); letter-spacing: -0.03em; }
.price .amount small { font-size: 0.95rem; font-weight: 500; color: var(--muted); }
.price .setup { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.price .founder { font-size: 13px; font-weight: 600; color: var(--teal-700); background: rgba(34, 211, 197, 0.1); padding: 6px 10px; border-radius: 8px; margin-bottom: 18px; }
.price ul { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 8px; font-size: 14.5px; }
.price li { display: grid; grid-template-columns: 18px 1fr; gap: 10px; }
.price li svg { width: 18px; height: 18px; color: var(--teal-600); margin-top: 3px; }
.price .btn { margin-top: auto; }
.price-note { font-size: 13px; color: var(--muted); margin-top: 20px; }

.faq { max-width: 820px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: var(--white); border: 1px solid var(--line); border-radius: 14px; padding: 0 22px; }
.faq summary { cursor: pointer; list-style: none; padding: 18px 0; font-weight: 650; color: var(--ink); display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 1.4rem; line-height: 1; color: var(--teal-700); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 18px; margin: 0; }

/* Hiện dần khi cuộn */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 1080px) {
  .segments { grid-template-columns: repeat(3, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
}
.nav a { white-space: nowrap; }
@media (max-width: 1100px) {
  .nav, .header-cta { display: none; }
  .menu-btn { display: grid; place-items: center; }
  .lang { margin-left: auto; }
  .menu-btn { margin-left: 10px; }
  .site-header.open .nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--navy-950);
    padding: 12px var(--gutter) 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .site-header.open .nav a { padding: 12px; font-size: 16px; }
  .site-header.open .nav .nav-cta { display: block; margin-top: 8px; text-align: center; background: var(--teal); color: var(--navy-950); border-radius: 999px; }
}
@media (min-width: 1101px) { .nav .nav-cta { display: none; } }
@media (max-width: 960px) {
  .layers-wrap, .founding-grid, .signup-grid, .two-col, .page-hero-grid { grid-template-columns: 1fr; }
  .stack { height: 380px; order: -1; }
  .grid-3, .pricing { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .page-hero-grid { min-height: 0; }
  .app-visual { max-height: 300px; max-width: 300px; margin: 0 auto; order: -1; }
  .page-hero-grid { padding-top: 24px; gap: 8px; }
}
@media (max-width: 760px) {
  .hero { align-items: flex-end; min-height: calc(100svh - var(--header-h)); }
  .hero::after { background: linear-gradient(180deg, rgba(5, 11, 26, 0) 0, rgba(5, 11, 26, 0) 290px, rgba(5, 11, 26, 0.92) 360px); }
  .hero-content { padding-top: 340px; padding-bottom: 56px; }
  .hero-canvas { width: 100%; height: 340px; }
  .hero-stats { gap: 20px; }
  .map-note { left: var(--gutter); right: auto; bottom: 14px; }
  .scroll-hint { display: none; }
  .segments, .features { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .plane { width: 200px; height: 200px; margin: -100px 0 0 -100px; }
  .stack { height: 330px; }
  .stack.open .plane.core { --z: -30px; }
  .stack.open .plane.l1 { --z: 35px; }
  .stack.open .plane.l2 { --z: 100px; }
  .stack.open .plane.l3 { --z: 165px; }
  .wire { grid-template-columns: 1fr; }
  .wire-side { display: none; }
  .wire-row { grid-template-columns: 1.2fr 1fr 0.8fr; }
  .wire-row > :nth-child(4) { display: none; }
  .seat { padding: 14px; }
}
/* Máy bật "Giảm chuyển động": giữ chuyển động nhẹ, bỏ cuộn mượt và hiệu ứng trượt */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transform: none; }
}

/* Chọn ngôn ngữ */
.lang { display: flex; align-items: center; gap: 4px; font-size: 13px; font-weight: 600; color: var(--on-dark-muted); flex: none; }
.lang a { text-decoration: none; padding: 4px 6px; border-radius: 6px; }
.lang a[aria-current="true"] { color: #fff; background: rgba(255, 255, 255, 0.08); }
.lang a.soon { opacity: 0.6; cursor: default; }

/* ===== Hiệu ứng hover cho card =====
   - Viền chuyển màu hiện ra khi rê chuột
   - Vệt sáng màu đi theo con trỏ (biến --mx, --my do app.js đặt)
   - Bóng đổ có màu, biểu tượng đổi sang nền màu
   Mỗi loại card có cặp màu riêng qua biến --c1, --c2. */
.card { --c1: var(--teal); --c2: var(--blue); position: relative; isolation: isolate; }
.card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1.5px;
  background: linear-gradient(135deg, var(--c1), var(--c2));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 1;
}
.card .spot {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--c1) 16%, transparent), transparent 65%);
  z-index: -1;
}
@media (hover: hover) {
  .card:hover { transform: translateY(-5px); box-shadow: 0 22px 44px -22px color-mix(in srgb, var(--c1) 70%, transparent); border-color: transparent; }
  .card:hover::after, .card:hover .spot { opacity: 1; }
}

/* Không áp dụng cho các khối chữ không có khung */
.why .card::after, .why .card .spot { display: none; }
.why .card:hover { transform: none; box-shadow: none; }
.why .card::before { transition: color 0.3s, border-color 0.3s; }
.why .card:hover::before { color: var(--warm); border-color: var(--warm); }

/* Vấn đề: mỗi thẻ một màu */
.problem:nth-child(1) { --c1: #22d3c5; --c2: #3b82f6; }
.problem:nth-child(2) { --c1: #3b82f6; --c2: #a78bfa; }
.problem:nth-child(3) { --c1: #ff8a4c; --c2: #f43f5e; }
.problem .num { transition: color 0.3s; }
.problem:hover .num { background: linear-gradient(90deg, var(--c1), var(--c2)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Loại doanh nghiệp: mỗi loại một màu, biểu tượng đổi sang nền màu */
.segment:nth-child(1) { --c1: #22d3c5; --c2: #0ea5a0; }
.segment:nth-child(2) { --c1: #3b82f6; --c2: #22d3c5; }
.segment:nth-child(3) { --c1: #ff8a4c; --c2: #f59e0b; }
.segment:nth-child(4) { --c1: #a78bfa; --c2: #3b82f6; }
.segment:nth-child(5) { --c1: #f472b6; --c2: #ff8a4c; }
.segment .icon, .feature .icon { transition: background 0.3s, color 0.3s, transform 0.3s; }
.segment:hover .icon, .feature:hover .icon { background: linear-gradient(135deg, var(--c1), var(--c2)); color: #fff; transform: scale(1.08) rotate(-4deg); }
.segment .tag { transition: border-color 0.3s, color 0.3s; }
.segment:hover .tag { border-color: color-mix(in srgb, var(--c1) 50%, transparent); color: var(--ink); }

/* Ứng dụng: màu theo lớp */
.app-card.layer-van-hanh { --c1: #22d3c5; --c2: #0b7f7b; }
.app-card.layer-dung-chung { --c1: #60a5fa; --c2: #2563eb; }
.app-card.layer-ket-noi { --c1: #ffa86b; --c2: #f0652a; }
.app-card .mono { transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.35s; }
.app-card:hover .mono { transform: scale(1.1) rotate(-6deg); box-shadow: 0 10px 22px -8px var(--c1); }
.app-card .app-link svg { transition: transform 0.25s; }
.app-card:hover .app-link { color: var(--c2); }
.app-card:hover .app-link svg { transform: translateX(4px); }

/* Tính năng: xoay vòng màu */
.feature:nth-child(3n + 1) { --c1: #22d3c5; --c2: #3b82f6; }
.feature:nth-child(3n + 2) { --c1: #3b82f6; --c2: #a78bfa; }
.feature:nth-child(3n + 3) { --c1: #ff8a4c; --c2: #f472b6; }

/* Bài viết: ảnh phóng nhẹ, nhãn đổi màu */
.post:nth-child(1) { --c1: #22d3c5; --c2: #3b82f6; }
.post:nth-child(2) { --c1: #ff8a4c; --c2: #f59e0b; }
.post:nth-child(3) { --c1: #a78bfa; --c2: #3b82f6; }
.post-thumb { transition: filter 0.4s; }
.post-thumb::after { transition: transform 0.6s ease; }
.post:hover .post-thumb { filter: saturate(1.3) brightness(1.15); }
.post:hover .post-thumb::after { transform: scale(1.12); }
.post-tag { transition: color 0.3s; }
.post:hover .post-tag { color: var(--c2); }

/* Bảng giá */
.price:nth-child(1) { --c1: #22d3c5; --c2: #3b82f6; }
.price:nth-child(2) { --c1: #0ea5a0; --c2: #22d3c5; }
.price:nth-child(3) { --c1: #a78bfa; --c2: #ff8a4c; }

/* Ô khách sáng lập, mục cam kết, mục ba lớp (nền tối) */
.seat { transition: border-color 0.25s, background 0.25s, transform 0.25s, box-shadow 0.25s; }
.seat:hover { transform: translateX(4px); box-shadow: 0 12px 30px -16px rgba(34, 211, 197, 0.6); }
.commit .icon { transition: background 0.3s, color 0.3s, transform 0.3s; }
.commit:hover .icon { background: linear-gradient(135deg, var(--teal), var(--blue)); color: #fff; transform: rotate(-6deg) scale(1.06); }
.layer-item { transition: background 0.25s, border-color 0.25s, transform 0.25s; }
.layer-item:hover { transform: translateX(6px); }
.chip-app { transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s; }
.chip-app:hover { border-color: var(--teal-600); transform: translateY(-2px); box-shadow: 0 10px 22px -14px rgba(14, 165, 160, 0.7); }

/* Biểu tượng mạng xã hội: hiển thị nhưng chưa bấm được */
.social { display: flex; gap: 10px; margin-top: 16px; }
.social-icon { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; background: rgba(255, 255, 255, 0.06); color: var(--on-dark-muted); cursor: default; }
.social-icon svg { width: 18px; height: 18px; }

/* ===== Phần riêng của theme WordPress ===== */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-error { background: #fff1f2; color: #9f1239; border: 1px solid #fecdd3; border-radius: 10px; padding: 10px 14px; font-size: 14px; margin: 0 0 16px; }
.page-hero-sm { padding: 64px 0 56px; }
.page-hero-sm .eyebrow { color: var(--teal); }
.page-hero-sm h1 { max-width: 820px; }
.page-hero .meta { color: var(--on-dark-muted); font-size: 14px; margin: 0; }
.pager { margin-top: 40px; }
.pager .nav-links { display: flex; gap: 8px; flex-wrap: wrap; }
.pager .page-numbers { padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); background: #fff; text-decoration: none; font-weight: 600; font-size: 14px; }
.pager .page-numbers.current { background: var(--navy-900); color: #fff; border-color: var(--navy-900); }

/* Nội dung bài viết */
.entry { max-width: 760px; margin: 0 auto; font-size: 1.06rem; color: var(--body); }
.entry h2 { font-size: 1.6rem; margin-top: 2em; }
.entry h3 { font-size: 1.25rem; margin-top: 1.6em; }
.entry a { color: var(--teal-700); }
.entry img { height: auto; border-radius: 14px; }
.entry ul, .entry ol { padding-left: 1.3em; }
.entry li { margin-bottom: 0.4em; }
.entry blockquote { margin: 1.5em 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--teal); color: var(--ink); }
.entry table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.entry th, .entry td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.entry th { background: var(--bg); }
.entry pre, .entry code { background: var(--bg); border-radius: 6px; }