/* =========================================================
   VÕ QUANG SANG — Hệ thống giao diện dùng chung
   Đen chủ đạo · điểm vàng · cảm giác công nghệ
   ========================================================= */

:root {
  --bg: #060608;
  --bg-2: #0b0b0f;
  --surface: #111116;
  --surface-2: #16161d;
  --line: rgba(233, 185, 73, 0.14);
  --line-soft: rgba(255, 255, 255, 0.07);

  --gold: #e9b949;
  --gold-light: #f7da8a;
  --gold-deep: #a87a22;
  --gold-grad: linear-gradient(135deg, #fbe7a8 0%, #e9b949 45%, #a87a22 100%);

  --text: #f4f0e8;
  --muted: #a7a196;
  --dim: #6f6a61;

  --radius: 18px;
  --radius-sm: 12px;
  --max: 1180px;

  --font-body: "Be Vietnam Pro", system-ui, sans-serif;
  --font-display: "Playfair Display", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
::selection { background: var(--gold); color: #000; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ---------- Nền công nghệ ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  opacity: .55;
}
.bg-glow {
  position: fixed; z-index: -2; pointer-events: none;
  width: 760px; height: 760px; border-radius: 50%;
  background: radial-gradient(circle, rgba(233,185,73,.16), transparent 65%);
  top: -280px; right: -220px; filter: blur(10px);
}
#network {
  position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%;
  pointer-events: none;
}

/* ---------- Chữ ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--gold);
}
.eyebrow::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--gold); box-shadow: 0 0 12px var(--gold);
}
.pill {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(233,185,73,.06);
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; color: var(--gold-light);
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 10px var(--gold); animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .35; } }

h1, h2, h3 { margin: 0; line-height: 1.15; font-weight: 800; letter-spacing: -0.02em; }
.display { font-size: clamp(40px, 6.4vw, 78px); }
.h2 { font-size: clamp(30px, 4.2vw, 50px); }
.h3 { font-size: 22px; }
.gold { background: var(--gold-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.serif { font-family: var(--font-display); font-style: italic; font-weight: 700; letter-spacing: -0.01em; }
.lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--muted); max-width: 580px; }
.muted { color: var(--muted); }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

.typing { display: inline-block; min-width: 2ch; }
.type-line { display: block; white-space: nowrap; }
.hero .display { font-size: clamp(36px, 5.6vw, 72px); }
.caret { display: inline-block; width: 3px; height: .9em; margin-left: 4px; background: var(--gold); vertical-align: -0.08em; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Nút ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 26px; border-radius: 12px; border: 1px solid transparent;
  font-weight: 700; font-size: 15px; transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-gold {
  background: var(--gold-grad); color: #120d02;
  box-shadow: 0 10px 30px -10px rgba(233,185,73,.7), inset 0 1px 0 rgba(255,255,255,.4);
}
.btn-gold:hover { box-shadow: 0 16px 40px -10px rgba(233,185,73,.85), inset 0 1px 0 rgba(255,255,255,.4); }
.btn-ghost { border-color: var(--line); background: rgba(255,255,255,.03); color: var(--text); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-light); }
.btn-sm { padding: 10px 18px; font-size: 14px; border-radius: 10px; }
.btn-block { width: 100%; }

/* ---------- Thanh điều hướng ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(6,6,8,.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: .04em; font-size: 15px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: var(--gold-grad); color: #120d02; font-family: var(--font-mono); font-weight: 800; font-size: 14px;
  box-shadow: 0 0 20px -4px rgba(233,185,73,.6);
}
.brand small { display: block; font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; color: var(--gold); font-weight: 500; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a { padding: 8px 14px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--muted); transition: color .2s, background .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); background: rgba(255,255,255,.05); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 10px; width: 42px; height: 42px; color: var(--text); }
.nav-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; background: currentColor; transition: .25s; }

@media (max-width: 860px) {
  .nav-links {
    position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    padding: 12px 20px 20px; background: rgba(6,6,8,.97); border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; font-size: 16px; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-links .btn { margin-top: 8px; }
}
@media (min-width: 861px) { .nav-links .btn { display: none; } }

/* ---------- Hero trang chủ ---------- */
.hero { position: relative; padding: 80px 0 60px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 { margin: 22px 0 22px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 34px 0 30px; }
.social-proof { display: flex; align-items: center; gap: 14px; font-size: 14px; color: var(--muted); }
.avatars { display: flex; }
.avatars span {
  width: 34px; height: 34px; border-radius: 50%; margin-left: -10px; display: grid; place-items: center;
  font-size: 12px; font-weight: 800; color: #120d02; background: var(--gold-grad); border: 2px solid var(--bg);
}
.avatars span:first-child { margin-left: 0; }
.avatars span:nth-child(2) { background: #d9d2c3; }
.avatars span:nth-child(3) { background: #8a7a55; color: #fff; }

.portrait { position: relative; justify-self: end; width: 100%; max-width: 440px; }
.portrait-frame {
  position: relative; border-radius: 24px; overflow: hidden; aspect-ratio: 4/5;
  border: 1px solid var(--line);
  box-shadow: 0 40px 80px -30px rgba(0,0,0,.9), 0 0 0 1px rgba(233,185,73,.08), 0 0 80px -20px rgba(233,185,73,.35);
}
.portrait-frame img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 20%; filter: saturate(.9) contrast(1.05); }
.portrait-frame::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(6,6,8,.85) 100%);
}
.portrait .corner { position: absolute; width: 34px; height: 34px; border: 2px solid var(--gold); z-index: 2; }
.corner.tl { top: -10px; left: -10px; border-right: 0; border-bottom: 0; border-radius: 10px 0 0 0; }
.corner.br { bottom: -10px; right: -10px; border-left: 0; border-top: 0; border-radius: 0 0 10px 0; }
.portrait-tag {
  position: absolute; left: 20px; right: 20px; bottom: 20px; z-index: 3;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.portrait-tag strong { display: block; font-size: 18px; }
.portrait-tag span { font-family: var(--font-mono); font-size: 11px; color: var(--gold); letter-spacing: .1em; }
.float-chip {
  position: absolute; z-index: 3; display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 14px; font-size: 13px; font-weight: 600;
  background: rgba(17,17,22,.88); border: 1px solid var(--line); backdrop-filter: blur(10px);
  box-shadow: 0 20px 40px -20px #000; animation: float 6s ease-in-out infinite;
}
.float-chip b { color: var(--gold); font-size: 18px; }
.float-chip.c1 { top: 12%; left: -48px; }
.float-chip.c2 { top: 48%; right: -14px; animation-delay: -3s; }
@keyframes float { 50% { transform: translateY(-10px); } }

@media (max-width: 960px) {
  .hero { padding: 48px 0 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .portrait { justify-self: center; max-width: 380px; }
  .float-chip.c1 { left: -8px; }
  .float-chip.c2 { right: -8px; }
}

/* ---------- Dải logo / chủ đề chạy ngang ---------- */
.marquee { border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); padding: 22px 0; overflow: hidden; background: rgba(255,255,255,.015); }
.marquee-label { text-align: center; font-family: var(--font-mono); font-size: 11px; letter-spacing: .2em; color: var(--dim); margin-bottom: 14px; }
.marquee-track { display: flex; gap: 14px; width: max-content; animation: scroll 38s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  display: flex; align-items: center; gap: 10px; padding: 12px 22px; border-radius: 12px;
  border: 1px solid var(--line-soft); background: var(--surface); color: var(--muted);
  font-weight: 600; font-size: 14px; white-space: nowrap;
}
.marquee-item i { width: 8px; height: 8px; border-radius: 2px; background: var(--gold); transform: rotate(45deg); }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ---------- Section ---------- */
.section { padding: 110px 0; position: relative; }
.section-sm { padding: 70px 0; }
.section-head { margin-bottom: 56px; }
.section-head h2 { margin: 16px 0 16px; }

/* ---------- Thẻ sản phẩm ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  position: relative; display: flex; flex-direction: column;
  padding: 32px; border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line-soft); overflow: hidden;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(233,185,73,.12), transparent 45%);
  opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-6px); border-color: var(--line); box-shadow: 0 30px 60px -30px rgba(233,185,73,.25); }
.card:hover::before { opacity: 1; }
.card.featured { border-color: rgba(233,185,73,.4); }
.card .tag {
  align-self: flex-start; padding: 5px 12px; border-radius: 999px; font-family: var(--font-mono);
  font-size: 11px; letter-spacing: .08em; color: var(--gold); border: 1px solid var(--line); background: rgba(233,185,73,.06);
}
.card .icon {
  width: 56px; height: 56px; border-radius: 14px; margin: 24px 0 22px; display: grid; place-items: center;
  background: rgba(233,185,73,.08); border: 1px solid var(--line); color: var(--gold);
}
.card .icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 24px; margin-bottom: 12px; }
.card p { color: var(--muted); margin: 0 0 22px; font-size: 15px; }
.card ul { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 10px; font-size: 14px; color: var(--muted); }
.card li { display: flex; gap: 10px; align-items: flex-start; }
.card li::before { content: "◆"; color: var(--gold); font-size: 9px; margin-top: 6px; }
.card .btn { margin-top: auto; }

@media (max-width: 960px) { .cards { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; } }

/* ---------- Số liệu ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.stat { padding: 34px 24px; text-align: center; border-right: 1px solid var(--line-soft); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font-size: clamp(30px, 3.6vw, 44px); font-weight: 800; }
.stat span { font-size: 14px; color: var(--muted); }
@media (max-width: 760px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line-soft); }
}

/* ---------- Khối giới thiệu ---------- */
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: center; }
.split-img { position: relative; border-radius: 24px; overflow: hidden; border: 1px solid var(--line); aspect-ratio: 1/1; }
.split-img img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 15%; }
.checklist { list-style: none; padding: 0; margin: 28px 0 34px; display: grid; gap: 14px; }
.checklist li { display: flex; gap: 14px; align-items: flex-start; }
.checklist .ck {
  flex: none; width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  background: rgba(233,185,73,.1); border: 1px solid var(--line); color: var(--gold); font-size: 13px; font-weight: 800;
}
@media (max-width: 960px) { .split { grid-template-columns: 1fr; gap: 40px; } .split-img { max-width: 480px; } }

/* ---------- Các bước ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; counter-reset: step; }
.step { padding: 30px; border-radius: var(--radius); border: 1px solid var(--line-soft); background: var(--surface); position: relative; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  font-family: var(--font-mono); font-size: 13px; color: var(--gold); letter-spacing: .1em;
}
.step h3 { margin: 14px 0 10px; font-size: 20px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

/* ---------- Khối kêu gọi hành động ---------- */
.cta-box {
  position: relative; overflow: hidden; text-align: center;
  padding: 72px 32px; border-radius: 28px; border: 1px solid rgba(233,185,73,.3);
  background:
    radial-gradient(600px circle at 50% 0%, rgba(233,185,73,.18), transparent 60%),
    linear-gradient(180deg, var(--surface-2), var(--bg-2));
}
.cta-box h2 { margin: 18px auto 16px; max-width: 760px; }
.cta-box .lead { margin: 0 auto 32px; }

/* ---------- Chân trang ---------- */
.footer { border-top: 1px solid var(--line-soft); padding: 56px 0 32px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer h4 { margin: 0 0 16px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .14em; color: var(--gold); font-weight: 500; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-size: 14px; color: var(--muted); }
.footer a:hover { color: var(--gold-light); }
.footer-bottom { margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line-soft); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: var(--dim); }
.socials { display: flex; gap: 10px; margin-top: 18px; }
.socials a {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  border: 1px solid var(--line-soft); color: var(--muted); transition: .2s;
}
.socials a:hover { color: var(--gold); border-color: var(--gold); }
.socials svg { width: 18px; height: 18px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Hộp đăng ký (modal) ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: none; align-items: center; justify-content: center; padding: 16px; }
.modal.open { display: flex; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.72); backdrop-filter: blur(6px); }
.modal-card {
  position: relative; width: 100%; max-width: 460px; max-height: calc(100vh - 32px); overflow-y: auto;
  padding: 32px; border-radius: 22px; background: var(--surface); border: 1px solid rgba(233,185,73,.3);
  box-shadow: 0 40px 100px -20px #000, 0 0 60px -20px rgba(233,185,73,.35);
  animation: pop .3s ease;
}
@keyframes pop { from { transform: translateY(16px) scale(.97); opacity: 0; } }
.modal-close { position: absolute; top: 14px; right: 14px; width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line-soft); background: transparent; color: var(--muted); font-size: 20px; line-height: 1; }
.modal-close:hover { color: var(--text); border-color: var(--gold); }
.modal-card h3 { font-size: 26px; margin: 14px 0 10px; }

/* ---------- Form ---------- */
.form { display: grid; gap: 12px; margin-top: 20px; }
.field { position: relative; }
.field input, .field select {
  width: 100%; padding: 14px 16px; border-radius: 12px; font: inherit; font-size: 15px;
  background: var(--bg-2); color: var(--text); border: 1px solid var(--line-soft); outline: none; transition: border-color .2s, box-shadow .2s;
}
.field input::placeholder { color: var(--dim); }
.field input:focus, .field select:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(233,185,73,.15); }
.form-note { font-size: 12px; color: var(--dim); text-align: center; margin: 4px 0 0; }
.form-success { display: none; text-align: center; padding: 20px 0 6px; }
.form-success .big { font-size: 44px; }
.form.done { display: none; }
.form.done + .form-success { display: block; }
.perks { list-style: none; padding: 16px 18px; margin: 18px 0 0; border-radius: 14px; background: rgba(233,185,73,.05); border: 1px solid var(--line); display: grid; gap: 8px; font-size: 14px; }
.perks li { display: flex; gap: 10px; }
.perks li::before { content: "✓"; color: var(--gold); font-weight: 800; }

/* ---------- Hiện dần khi cuộn ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track, .float-chip, .pill .dot, .caret { animation: none; }
}

/* =========================================================
   LANDING PAGE KHÓA HỌC
   ========================================================= */
.lp-nav .nav-inner { height: 64px; }
.lp-hero { padding: 90px 0 70px; position: relative; overflow: hidden; text-align: center; }
.lp-hero h1 { margin: 22px auto 22px; max-width: 920px; }
.lp-hero .lead { margin: 0 auto; }
.lp-hero .hero-actions { justify-content: center; }
.countdown { display: inline-flex; gap: 10px; margin-top: 8px; }
.countdown div { min-width: 70px; padding: 12px 8px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); text-align: center; }
.countdown b { display: block; font-size: 26px; font-family: var(--font-mono); color: var(--gold-light); }
.countdown span { font-size: 11px; color: var(--dim); letter-spacing: .08em; text-transform: uppercase; }

.pain-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.pain { display: flex; gap: 16px; padding: 22px 24px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line-soft); }
.pain .x { flex: none; width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; background: rgba(255,90,90,.08); color: #ff8a7a; font-weight: 800; }
.pain p { margin: 0; color: var(--muted); }
.pain strong { color: var(--text); display: block; margin-bottom: 4px; }
@media (max-width: 760px) { .pain-grid { grid-template-columns: 1fr; } }

.modules { display: grid; gap: 12px; max-width: 860px; margin: 0 auto; }
.module { border-radius: 16px; background: var(--surface); border: 1px solid var(--line-soft); overflow: hidden; }
.module summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 18px; padding: 22px 24px; font-weight: 700; font-size: 17px;
}
.module summary::-webkit-details-marker { display: none; }
.module summary .num { font-family: var(--font-mono); font-size: 13px; color: var(--gold); min-width: 70px; }
.module summary::after { content: "+"; margin-left: auto; font-size: 22px; color: var(--gold); transition: transform .25s; }
.module[open] summary::after { transform: rotate(45deg); }
.module[open] { border-color: var(--line); }
.module .body { padding: 0 24px 22px 112px; color: var(--muted); font-size: 15px; }
.module .body ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; }
@media (max-width: 600px) { .module .body { padding-left: 24px; } .module summary .num { min-width: auto; } }

.testimonials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.quote { padding: 28px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line-soft); }
.quote .stars { color: var(--gold); letter-spacing: 3px; font-size: 14px; }
.quote p { color: var(--muted); font-size: 15px; margin: 14px 0 20px; }
.quote .who { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.quote .who i { width: 40px; height: 40px; border-radius: 50%; background: var(--surface-2); border: 1px dashed var(--line); display: grid; place-items: center; font-style: normal; color: var(--dim); font-size: 12px; }
.quote .who span { display: block; color: var(--dim); font-size: 12px; }
@media (max-width: 960px) { .testimonials { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; } }

.pricing { max-width: 560px; margin: 0 auto; padding: 40px; border-radius: 26px; text-align: center; border: 1px solid rgba(233,185,73,.4);
  background: radial-gradient(500px circle at 50% 0%, rgba(233,185,73,.14), transparent 60%), var(--surface);
  box-shadow: 0 40px 80px -40px rgba(233,185,73,.35);
}
.price-old { color: var(--dim); text-decoration: line-through; font-size: 18px; }
.price { font-size: clamp(40px, 6vw, 56px); font-weight: 800; margin: 6px 0 4px; }
.pricing .perks { text-align: left; margin: 26px 0 28px; }

.faq { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }

.placeholder-note {
  display: inline-block; padding: 2px 8px; border-radius: 6px; font-family: var(--font-mono); font-size: 11px;
  color: #120d02; background: var(--gold-light); vertical-align: middle; letter-spacing: .04em;
}

.sticky-cta {
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 60; display: none;
}
@media (max-width: 760px) { .sticky-cta { display: block; } .lp-page { padding-bottom: 90px; } }

/* =========================================================
   TRANG LINK IN BIO
   ========================================================= */
.bio { min-height: 100vh; display: flex; justify-content: center; padding: 48px 16px 64px; position: relative; overflow: hidden; }
.bio-inner { width: 100%; max-width: 480px; }
.bio-head { text-align: center; }
.bio-avatar { width: 112px; height: 112px; margin: 0 auto 18px; border-radius: 50%; padding: 3px; background: var(--gold-grad); box-shadow: 0 0 40px -6px rgba(233,185,73,.6); }
.bio-avatar img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; object-position: 50% 12%; border: 3px solid var(--bg); }
.bio-name { font-size: 24px; display: inline-flex; align-items: center; gap: 8px; }
.verified { width: 20px; height: 20px; color: var(--gold); }
.bio-sub { color: var(--muted); font-size: 14px; margin: 6px 0 0; }
.bio .socials { justify-content: center; margin: 20px 0 30px; }
.bio-links { display: grid; gap: 12px; }
.bio-link {
  display: flex; align-items: center; gap: 14px; padding: 16px 18px; border-radius: 16px;
  background: var(--surface); border: 1px solid var(--line-soft); transition: transform .2s, border-color .2s, box-shadow .2s;
}
.bio-link:hover { transform: translateY(-2px); border-color: var(--gold); box-shadow: 0 12px 30px -18px rgba(233,185,73,.6); }
.bio-link .ic { flex: none; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: rgba(233,185,73,.08); border: 1px solid var(--line); color: var(--gold); }
.bio-link .ic svg { width: 22px; height: 22px; }
.bio-link strong { display: block; font-size: 15px; }
.bio-link span { font-size: 13px; color: var(--muted); }
.bio-link .arrow { margin-left: auto; color: var(--dim); }
.bio-link.hot { background: var(--gold-grad); border-color: transparent; color: #120d02; }
.bio-link.hot span, .bio-link.hot .arrow { color: rgba(18,13,2,.75); }
.bio-link.hot .ic { background: rgba(0,0,0,.12); border-color: rgba(0,0,0,.15); color: #120d02; }
.bio-section { font-family: var(--font-mono); font-size: 11px; letter-spacing: .18em; color: var(--dim); margin: 18px 0 2px; text-align: center; }
.bio-foot { text-align: center; font-size: 12px; color: var(--dim); margin-top: 36px; }

/* =========================================================
   THƯ VIỆN TÀI LIỆU
   ========================================================= */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.filter {
  padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line-soft); background: var(--surface);
  color: var(--muted); font-size: 14px; font-weight: 600;
}
.filter.active, .filter:hover { border-color: var(--gold); color: var(--gold-light); }
.filter small { margin-left: 6px; color: var(--dim); font-family: var(--font-mono); }
.docs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.doc { display: flex; flex-direction: column; padding: 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line-soft); transition: .25s; }
.doc:hover { border-color: var(--line); transform: translateY(-4px); }
.doc .meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.doc .meta span { font-size: 11px; font-family: var(--font-mono); padding: 4px 10px; border-radius: 999px; border: 1px solid var(--line-soft); color: var(--muted); }
.doc .meta .new { color: #120d02; background: var(--gold); border-color: var(--gold); font-weight: 700; }
.doc h3 { font-size: 19px; margin-bottom: 10px; }
.doc p { color: var(--muted); font-size: 14px; margin: 0 0 20px; }
.doc a.more { margin-top: auto; color: var(--gold); font-weight: 700; font-size: 14px; }
@media (max-width: 960px) { .docs { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .docs { grid-template-columns: 1fr; } }

/* =========================================================
   TĂNG CHUYỂN ĐỔI
   ========================================================= */
section[id] { scroll-margin-top: 90px; }

/* Thanh tiến độ cuộn */
.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 70; pointer-events: none; }
.progress span { display: block; height: 100%; width: 0; background: var(--gold-grad); box-shadow: 0 0 10px var(--gold); }

/* Thanh thông báo */
.announce {
  display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap;
  padding: 9px 16px; font-size: 13px; text-align: center;
  background: linear-gradient(90deg, rgba(233,185,73,.08), rgba(233,185,73,.18), rgba(233,185,73,.08));
  border-bottom: 1px solid var(--line); color: var(--gold-light);
}
.announce b { color: var(--gold); white-space: nowrap; }
.announce:hover b { text-decoration: underline; }
.announce .short { display: none; }
@media (max-width: 600px) {
  .announce { gap: 10px; font-size: 12px; flex-wrap: nowrap; }
  .announce .long { display: none; }
  .announce .short { display: inline; }
}
@media (max-width: 480px) {
  .brand { white-space: nowrap; font-size: 14px; }
  .brand small { display: none; }
  .brand-mark { width: 34px; height: 34px; font-size: 12px; }
  .lp-nav .btn-sm { padding: 9px 14px; font-size: 13px; }
}

/* Dòng tin cậy dưới nút đăng ký */
.trust { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px 16px; font-size: 12px; color: var(--dim); margin-top: 2px; }

/* Form điền thẳng trong trang */
.inline-form { max-width: 440px; margin: 0 auto; text-align: left; }
.inline-form .form { margin-top: 0; }
.inline-form .form-success { text-align: center; }

/* Nút Zalo nổi */
.zalo-fab {
  position: fixed; right: 20px; bottom: 20px; z-index: 65;
  display: flex; align-items: center; gap: 8px; padding: 12px 16px 12px 12px; border-radius: 999px;
  background: #0068ff; color: #fff; font-weight: 700; font-size: 14px;
  box-shadow: 0 10px 30px -8px rgba(0,104,255,.7); transition: transform .2s;
}
.zalo-fab:hover { transform: translateY(-3px); }
.zalo-fab svg { width: 26px; height: 26px; }
.zalo-fab::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; border: 2px solid #0068ff;
  animation: ring 2.2s ease-out infinite;
}
@keyframes ring { from { transform: scale(1); opacity: .8; } to { transform: scale(1.35); opacity: 0; } }
@media (max-width: 760px) {
  body.has-sticky { padding-bottom: 84px; }
  .zalo-fab { bottom: 86px; right: 16px; padding: 12px; }
  .zalo-fab span { display: none; }
}

/* Gợi ý đăng ký khi đọc hơn nửa trang */
.toast {
  position: fixed; right: 20px; bottom: 86px; z-index: 64; width: 320px;
  padding: 20px; border-radius: 18px; background: var(--surface); border: 1px solid rgba(233,185,73,.35);
  box-shadow: 0 30px 60px -20px #000, 0 0 40px -20px rgba(233,185,73,.5);
  transform: translateY(20px); opacity: 0; pointer-events: none; transition: .4s ease;
}
.toast.show { transform: none; opacity: 1; pointer-events: auto; }
.toast p { font-size: 14px; color: var(--muted); margin: 12px 0 14px; }
.toast p b { color: var(--text); }
.toast-close { position: absolute; top: 10px; right: 10px; width: 28px; height: 28px; border-radius: 8px; border: 0; background: transparent; color: var(--dim); font-size: 18px; }
.toast-close:hover { color: var(--text); }

/* Bảng chọn mẫu nền */
.bg-picker { position: fixed; left: 20px; bottom: 20px; z-index: 66; }
.bg-picker-btn {
  padding: 11px 16px; border-radius: 999px; border: 1px solid var(--gold); background: rgba(6,6,8,.9);
  color: var(--gold-light); font-weight: 700; font-size: 13px; backdrop-filter: blur(8px);
  box-shadow: 0 10px 30px -10px rgba(233,185,73,.6);
}
.bg-picker-panel {
  position: absolute; left: 0; bottom: 54px; width: 290px; padding: 14px; border-radius: 18px;
  background: rgba(17,17,22,.97); border: 1px solid var(--line); box-shadow: 0 30px 60px -20px #000;
  display: none; gap: 6px;
}
.bg-picker.open .bg-picker-panel { display: grid; }
.bg-picker-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--gold); padding: 4px 6px 6px; }
.bg-option { text-align: left; padding: 10px 12px; border-radius: 12px; border: 1px solid transparent; background: transparent; color: var(--text); }
.bg-option b { display: block; font-size: 14px; }
.bg-option span { font-size: 12px; color: var(--muted); }
.bg-option:hover { background: rgba(255,255,255,.04); }
.bg-option.active { border-color: var(--gold); background: rgba(233,185,73,.08); }
.bg-picker-note { font-size: 11px; color: var(--dim); margin: 6px 6px 2px; }
@media (max-width: 760px) { .bg-picker { bottom: 86px; left: 16px; } }

/* =========================================================
   TRANG BIO MỚI (/bio/)
   ========================================================= */
.bio-pro .bio-inner { max-width: 520px; }
.bio-hero {
  position: relative; border-radius: 26px; overflow: hidden; aspect-ratio: 4/4.4;
  border: 1px solid rgba(233,185,73,.35);
  box-shadow: 0 40px 80px -30px #000, 0 0 70px -25px rgba(233,185,73,.5);
}
.bio-hero img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 14%; }
.bio-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,6,8,0) 40%, rgba(6,6,8,.95) 100%); }
.bio-hero-info { position: absolute; left: 22px; right: 22px; bottom: 20px; z-index: 2; text-align: center; }
.bio-hero-info .bio-name { font-size: 28px; }
.bio-hero-info .socials { justify-content: center; margin: 14px 0 0; }
.bio-hero-info .socials a { background: rgba(6,6,8,.6); backdrop-filter: blur(6px); }
.bio-hero .live {
  position: absolute; top: 16px; left: 16px; z-index: 2; display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: rgba(6,6,8,.7); border: 1px solid var(--line); backdrop-filter: blur(6px); color: var(--gold-light);
}
.bio-hero .live i { width: 7px; height: 7px; border-radius: 50%; background: #3ddc84; box-shadow: 0 0 8px #3ddc84; }

.bio-block { margin-top: 30px; }
.bio-block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.bio-block-head h2 { font-size: 18px; }
.bio-block-head span { font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; color: var(--gold); }
.tiles { display: grid; gap: 14px; }

.gift-tile {
  position: relative; display: flex; align-items: center; gap: 16px; padding: 16px; border-radius: 18px;
  background: linear-gradient(135deg, rgba(233,185,73,.14), rgba(233,185,73,.03) 60%), var(--surface);
  border: 1px solid rgba(233,185,73,.4); transition: transform .2s, box-shadow .2s;
}
.gift-tile:hover { transform: translateY(-3px); box-shadow: 0 16px 40px -18px rgba(233,185,73,.7); }
.gift-thumb {
  flex: none; width: 60px; height: 72px; border-radius: 10px; display: grid; place-items: center;
  background: var(--gold-grad); color: #120d02; font-size: 26px;
  box-shadow: 4px 4px 0 rgba(233,185,73,.25), 0 10px 20px -8px rgba(233,185,73,.6);
}
.gift-tile strong { display: block; font-size: 16px; line-height: 1.35; }
.gift-tile p { margin: 4px 0 0; font-size: 13px; color: var(--muted); line-height: 1.5; }
.gift-tile .free {
  position: absolute; top: -9px; right: 14px; padding: 3px 10px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: .1em;
  background: #3ddc84; color: #04210f;
}
.gift-tile .go { margin-left: auto; flex: none; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--gold); color: #120d02; font-weight: 800; }

.course-tile {
  display: block; padding: 18px; border-radius: 18px; background: var(--surface); border: 1px solid var(--line-soft);
  transition: transform .2s, border-color .2s;
}
.course-tile:hover { transform: translateY(-3px); border-color: var(--gold); }
.course-tile .row { display: flex; align-items: center; gap: 14px; }
.course-tile .ic { flex: none; width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: rgba(233,185,73,.08); border: 1px solid var(--line); color: var(--gold); }
.course-tile .ic svg { width: 24px; height: 24px; }
.course-tile .tag { font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; color: var(--gold); }
.course-tile strong { display: block; font-size: 17px; }
.course-tile ul { list-style: none; padding: 0; margin: 14px 0; display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.course-tile li::before { content: "✓  "; color: var(--gold); font-weight: 800; }
.course-tile .cta { display: flex; justify-content: space-between; align-items: center; padding-top: 12px; border-top: 1px solid var(--line-soft); font-size: 14px; font-weight: 700; color: var(--gold-light); }
.course-tile.featured { border-color: rgba(233,185,73,.45); }

.zalo-tile {
  display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: 18px;
  background: linear-gradient(135deg, rgba(0,104,255,.22), rgba(0,104,255,.06)); border: 1px solid rgba(0,104,255,.5);
  transition: transform .2s;
}
.zalo-tile:hover { transform: translateY(-3px); }
.zalo-tile .ic { flex: none; width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: #0068ff; color: #fff; }
.zalo-tile .ic svg { width: 28px; height: 28px; }
.zalo-tile strong { display: block; }
.zalo-tile span { font-size: 13px; color: var(--muted); }
.zalo-tile .go { margin-left: auto; flex: none; white-space: nowrap; color: #6aa8ff; font-weight: 800; }

/* =========================================================
   LANDING PAGE QUÀ TẶNG (/qua-tang/...)
   ========================================================= */
.gift-hero { position: relative; overflow: hidden; padding: 64px 0 70px; }
.gift-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.gift-hero h1 { margin: 18px 0 16px; font-size: clamp(32px, 5vw, 58px); }
.form-card {
  margin-top: 28px; padding: 24px; border-radius: 22px; max-width: 480px;
  background: rgba(17,17,22,.9); border: 1px solid rgba(233,185,73,.35); backdrop-filter: blur(8px);
  box-shadow: 0 30px 60px -30px #000, 0 0 50px -25px rgba(233,185,73,.5);
}
.form-card .inline-form { max-width: none; }
.form-card-title { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 14px; font-weight: 700; }
.form-card-title small { font-family: var(--font-mono); font-size: 11px; color: #3ddc84; letter-spacing: .08em; white-space: nowrap; }
.center-card { margin-left: auto; margin-right: auto; text-align: left; }

.cover-wrap { perspective: 1200px; display: grid; place-items: center; position: relative; }
.cover {
  position: relative; width: min(340px, 80vw); aspect-ratio: 3/4; border-radius: 10px 18px 18px 10px; padding: 34px 28px;
  display: flex; flex-direction: column; justify-content: space-between; overflow: hidden;
  background: radial-gradient(circle at 80% 10%, rgba(233,185,73,.35), transparent 50%), linear-gradient(160deg, #1b1a20, #0b0b0f);
  border: 1px solid rgba(233,185,73,.5);
  transform: rotateY(-14deg) rotateX(4deg); transition: transform .6s;
  box-shadow: 18px 24px 50px -10px #000, inset 6px 0 0 #a87a22, 0 0 80px -20px rgba(233,185,73,.55);
}
.cover:hover { transform: rotateY(-4deg) rotateX(2deg); }
.cover::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
}
.cover > * { position: relative; }
.cover .c-tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; color: var(--gold); }
.cover .c-big { font-size: 64px; line-height: 1; font-weight: 800; }
.cover .c-title { font-size: 24px; font-weight: 800; line-height: 1.2; margin-top: 8px; }
.cover .c-author { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.cover .c-author img { width: 34px; height: 34px; border-radius: 50%; object-fit: cover; object-position: 50% 12%; border: 1px solid var(--gold); }
.cover-badge {
  position: absolute; top: 4%; right: 6%; z-index: 2; width: 92px; height: 92px; border-radius: 50%;
  display: grid; place-items: center; text-align: center; font-weight: 800; font-size: 14px; line-height: 1.15;
  background: #3ddc84; color: #04210f; transform: rotate(12deg); box-shadow: 0 10px 30px -8px rgba(61,220,132,.7);
}
.gift-items { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.gift-item { display: flex; gap: 14px; padding: 20px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line-soft); }
.gift-item b { flex: none; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: rgba(233,185,73,.1); border: 1px solid var(--line); color: var(--gold); font-family: var(--font-mono); font-size: 13px; }
.gift-item p { margin: 0; color: var(--muted); font-size: 15px; }
.gift-item strong { display: block; color: var(--text); margin-bottom: 2px; }
@media (max-width: 960px) {
  .gift-grid { grid-template-columns: 1fr; gap: 32px; }
  .cover-wrap { margin-top: 8px; }
  .cover { width: min(230px, 62vw); padding: 22px 18px; }
  .cover .c-big { font-size: 44px; }
  .cover .c-title { font-size: 17px; }
  .cover-badge { width: 72px; height: 72px; font-size: 11px; right: 10%; }
  .form-card { max-width: none; }
}
@media (max-width: 760px) { .gift-items { grid-template-columns: 1fr; } .gift-hero { padding: 32px 0 50px; } }

/* =========================================================
   GIAO DIỆN TƯƠNG LAI — ảnh tách nền, ô kính, viền sáng chạy
   ========================================================= */
@property --ang { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
@keyframes ang { to { --ang: 360deg; } }
@keyframes sheen { from { background-position: 150% 0; } to { background-position: -50% 0; } }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Ảnh tách nền ---------- */
.portrait-cut { position: relative; justify-self: end; width: 100%; max-width: 460px; aspect-ratio: 652 / 825; }
.portrait-cut img, .bio-cut img, .cut-panel img {
  position: relative; z-index: 2; width: 100%; height: auto;
  -webkit-mask-image: linear-gradient(#000 76%, transparent 99%);
  mask-image: linear-gradient(#000 76%, transparent 99%);
  filter: drop-shadow(0 0 1px rgba(247,218,138,.7)) drop-shadow(0 0 28px rgba(233,185,73,.28)) drop-shadow(0 30px 40px rgba(0,0,0,.6));
}
.podium {
  position: absolute; z-index: 1; left: 4%; right: 4%; bottom: 3%; height: 18%;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(247,218,138,.5), rgba(233,185,73,.15) 45%, transparent 70%);
  filter: blur(4px);
}
.podium::before, .podium::after {
  content: ""; position: absolute; left: 50%; top: 50%; border-radius: 50%; transform: translate(-50%, -50%);
  border: 1px solid rgba(247,218,138,.7);
}
.podium::before { width: 92%; height: 46%; box-shadow: 0 0 22px rgba(233,185,73,.7), inset 0 0 18px rgba(233,185,73,.4); }
.podium::after { width: 120%; height: 64%; border-style: dashed; border-color: rgba(233,185,73,.35); }
.name-plate {
  position: absolute; z-index: 3; left: 50%; bottom: 6%; transform: translateX(-50%);
  padding: 10px 20px; border-radius: 14px; text-align: center; white-space: nowrap;
  background: rgba(10,10,14,.72); border: 1px solid rgba(233,185,73,.4); backdrop-filter: blur(10px);
  box-shadow: 0 0 30px -10px rgba(233,185,73,.6);
}
.name-plate strong { display: block; font-size: 17px; }
.name-plate span { font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; color: var(--gold); }
.portrait-cut .float-chip { z-index: 4; }
.portrait-cut .float-chip.c1 { top: 22%; left: -40px; }
.portrait-cut .float-chip.c2 { top: 50%; right: -20px; }
@media (max-width: 960px) {
  .portrait-cut { justify-self: center; max-width: 340px; }
  .portrait-cut .float-chip.c1 { left: -6px; }
  .portrait-cut .float-chip.c2 { right: -6px; }
}

/* Khối giới thiệu: ảnh tách nền trên bảng HUD */
.cut-panel {
  display: flex; align-items: flex-end; justify-content: center;
  background:
    radial-gradient(circle at 50% 55%, rgba(233,185,73,.22), transparent 58%),
    linear-gradient(var(--line-soft) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--bg-2);
}
.cut-panel::before {
  content: ""; position: absolute; left: 50%; top: 46%; width: 74%; aspect-ratio: 1; margin: -37% 0 0 -37%;
  border-radius: 50%; border: 1px dashed rgba(233,185,73,.4); animation: spin 40s linear infinite;
}
.cut-panel::after {
  content: ""; position: absolute; left: 50%; top: 46%; width: 88%; aspect-ratio: 1; margin: -44% 0 0 -44%;
  border-radius: 50%; border: 1px solid transparent; border-top-color: var(--gold-light); border-right-color: rgba(233,185,73,.4);
  animation: spin 9s linear infinite reverse;
}
.split-img.cut-panel img { width: 78%; height: auto; object-fit: contain; }

/* ---------- Ô kính + viền sáng chạy ---------- */
.card, .course-tile, .doc, .step, .bio-link, .gift-item, .pain, .quote, .module {
  background: linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.012) 42%), rgba(13,13,18,.74);
  border-color: rgba(233,185,73,.16);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.card, .course-tile, .doc, .step, .bio-link, .gift-tile, .zalo-tile, .form-card, .pricing { position: relative; isolation: isolate; }
.card::after, .course-tile::after, .doc::after, .step::after, .bio-link::after,
.gift-tile::after, .zalo-tile::after, .form-card::after, .pricing::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1.5px; pointer-events: none; z-index: 2;
  background: conic-gradient(from var(--ang), transparent 0 62%, rgba(247,218,138,.25) 72%, #fff3c4 84%, rgba(233,185,73,.6) 90%, transparent 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .35s; animation: ang 3.2s linear infinite;
}
.card:hover::after, .course-tile:hover::after, .doc:hover::after, .step:hover::after, .bio-link:hover::after, .zalo-tile:hover::after,
.card.featured::after, .course-tile.featured::after, .gift-tile::after, .form-card::after, .pricing::after { opacity: 1; }
.zalo-tile::after { background: conic-gradient(from var(--ang), transparent 0 65%, #6aa8ff 85%, transparent 100%); }

/* Ánh sáng lướt qua ô */
.gift-tile::before, .course-tile::before, .bio-link::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: 1;
  background: linear-gradient(105deg, transparent 38%, rgba(255,240,200,.1) 50%, transparent 62%) 150% 0 / 250% 100% no-repeat;
}
.gift-tile::before { animation: sheen 4.5s ease-in-out infinite; }
.course-tile:hover::before, .bio-link:hover::before { animation: sheen 1.1s ease forwards; }
.gift-tile > *, .course-tile > *, .bio-link > * { position: relative; z-index: 3; }
.gift-tile > .free { position: absolute; }

/* Hộp biểu tượng phát sáng */
.card .icon, .course-tile .ic, .bio-link .ic {
  background: radial-gradient(circle at 30% 20%, rgba(247,218,138,.28), rgba(233,185,73,.04) 70%);
  border-color: rgba(233,185,73,.45);
  box-shadow: inset 0 0 14px rgba(233,185,73,.15), 0 0 22px -6px rgba(233,185,73,.55);
}

/* Nhãn kiểu dòng lệnh trên ô khóa học */
.course-tile .tag::before { content: "> "; color: var(--gold-light); }
.course-tile .cta span:last-child {
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  border: 1px solid rgba(233,185,73,.5); transition: background .2s, color .2s;
}
.course-tile:hover .cta span:last-child { background: var(--gold); color: #120d02; }

/* Hover nâng ô + phát sáng */
.card:hover, .course-tile:hover, .doc:hover, .step:hover, .bio-link:hover {
  box-shadow: 0 24px 50px -24px rgba(233,185,73,.4), 0 0 0 1px rgba(233,185,73,.1);
}
.step { transition: transform .3s, box-shadow .3s; }
.step:hover { transform: translateY(-4px); }

/* Nút vàng có tia sáng lướt */
.btn-gold { position: relative; overflow: hidden; }
.btn-gold::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 35%, rgba(255,255,255,.55) 50%, transparent 65%) 150% 0 / 250% 100% no-repeat;
  animation: sheen 3.6s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .card::after, .course-tile::after, .doc::after, .step::after, .bio-link::after, .gift-tile::after,
  .zalo-tile::after, .form-card::after, .pricing::after, .gift-tile::before, .btn-gold::after,
  .cut-panel::before, .cut-panel::after { animation: none; }
}

/* =========================================================
   KẾT QUẢ THẬT (ảnh chụp màn hình)
   ========================================================= */
.proof { padding-top: 80px; }
.proof-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 36px; }
.proof-stat {
  position: relative; padding: 22px 18px; border-radius: 18px; text-align: center;
  background: linear-gradient(160deg, rgba(233,185,73,.12), rgba(233,185,73,.02) 60%), rgba(13,13,18,.8);
  border: 1px solid rgba(233,185,73,.3);
}
.proof-stat b { display: block; font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; line-height: 1.1; }
.proof-stat span { display: block; margin-top: 6px; font-size: 13px; color: var(--muted); }
.proof-grid { columns: 3; column-gap: 18px; }
.proof-shot {
  position: relative; break-inside: avoid; margin: 0 0 18px; padding: 10px 10px 0; border-radius: 20px; cursor: zoom-in;
  background: rgba(13,13,18,.85); border: 1px solid rgba(233,185,73,.2);
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.proof-shot:hover, .proof-shot:focus-visible { transform: translateY(-4px); border-color: var(--gold); box-shadow: 0 24px 50px -24px rgba(233,185,73,.5); outline: none; }
.proof-shot img { width: 100%; border-radius: 12px; }
.proof-shot figcaption { padding: 12px 6px 14px; font-size: 14px; font-weight: 600; line-height: 1.45; }
.proof-tag {
  position: absolute; top: 18px; left: 18px; z-index: 2; padding: 4px 10px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: .12em;
  background: var(--gold-grad); color: #120d02; box-shadow: 0 6px 16px -6px #000;
}
.proof-note { text-align: center; font-size: 12px; color: var(--dim); margin: 10px auto 0; max-width: 620px; }
@media (max-width: 960px) { .proof-stats { grid-template-columns: 1fr 1fr; } .proof-grid { columns: 2; } }
@media (max-width: 560px) { .proof-grid { columns: 1; } .proof { padding-top: 56px; } .proof-stat { padding: 16px 10px; } }

/* Bản rút gọn trên trang bio: số liệu + dải ảnh vuốt ngang */
.proof-compact .proof-stats { grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.proof-compact .proof-stat { padding: 14px 10px; }
.proof-compact .proof-stat b { font-size: 24px; }
.proof-compact .proof-stat span { font-size: 12px; }
.proof-strip {
  display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 10px;
  scrollbar-width: thin; scrollbar-color: var(--gold-deep) transparent;
}
.proof-strip .proof-shot { flex: none; width: 62%; margin: 0; scroll-snap-align: start; }
.proof-strip .proof-shot img { height: 230px; object-fit: cover; object-position: top; }
.proof-strip .proof-shot figcaption { font-size: 12px; font-weight: 500; color: var(--muted); }
.proof-strip .proof-tag { top: 16px; left: 16px; }

/* Phóng to ảnh */
.lightbox {
  position: fixed; inset: 0; z-index: 120; display: none; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  padding: 20px; background: rgba(0,0,0,.9); backdrop-filter: blur(6px); cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: min(560px, 100%); max-height: calc(100vh - 120px); border-radius: 14px; border: 1px solid rgba(233,185,73,.4); }
.lightbox p { margin: 0; max-width: 560px; text-align: center; font-weight: 600; }
.lightbox .modal-close { position: absolute; top: 16px; right: 16px; }

/* =========================================================
   FONT DỄ ĐỌC — toàn bộ website dùng Be Vietnam Pro
   ========================================================= */
:root {
  --font-display: "Be Vietnam Pro", system-ui, sans-serif;
  --font-mono: "Be Vietnam Pro", system-ui, sans-serif;
  --dim: #918b80;
}
body { font-size: 16.5px; line-height: 1.7; }
.serif { font-style: normal; font-weight: 800; letter-spacing: -0.02em; }
.lead { line-height: 1.7; }

/* Nhãn nhỏ: to hơn, bớt giãn chữ */
.eyebrow { font-size: 13px; letter-spacing: .08em; font-weight: 700; }
.pill { font-size: 13px; letter-spacing: .02em; font-weight: 600; }
.brand small { font-size: 11px; letter-spacing: .08em; font-weight: 600; }
.card .tag, .course-tile .tag, .proof-tag, .gift-tile .free, .doc .meta span,
.bio-block-head span, .bio-section, .marquee-label, .footer h4, .cover .c-tag,
.portrait-tag span, .name-plate span, .form-card-title small, .bg-picker-title {
  letter-spacing: .04em; font-weight: 700;
}
.card .tag, .doc .meta span { font-size: 12px; }
.course-tile .tag, .proof-tag, .gift-tile .free, .bio-block-head span { font-size: 11.5px; }
.marquee-label, .footer h4, .bio-section { font-size: 12.5px; }
.module summary .num, .step::before { letter-spacing: .04em; font-weight: 700; font-size: 14px; }
.countdown b { font-weight: 800; }
.countdown span { font-size: 12px; letter-spacing: .02em; }
.trust, .form-note, .proof-note { font-size: 13px; }
.card p, .doc p, .step p, .gift-item p, .pain p, .course-tile ul, .card ul { font-size: 15.5px; }
.course-tile ul { font-size: 14px; }

/* Số mục lẻ: mục cuối trải hết chiều ngang */
.gift-items .gift-item:last-child:nth-child(odd) { grid-column: 1 / -1; }

/* =========================================================
   HERO TỐI GIẢN (trang chủ) — chữ lớn giữa + ảnh + ô số liệu kính
   ========================================================= */
.hero-min { position: relative; overflow: hidden; padding: 56px 0 80px; text-align: center; }
.hero-min #network { opacity: .75; }
.hero-min::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(ellipse 60% 45% at 50% 62%, rgba(233,185,73,.14), transparent 70%);
}
.hm-head { position: relative; z-index: 2; }
.hm-title { margin: 22px 0 0; display: flex; flex-direction: column; align-items: center; line-height: .86; letter-spacing: -0.03em; }
.hm-big {
  font-size: clamp(110px, 17vw, 230px); font-weight: 800;
  background: linear-gradient(180deg, #ffffff 0%, #f1ede4 55%, #b9b3a6 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 10px 40px rgba(255,255,255,.08));
}
.hm-gold {
  font-size: clamp(42px, 7.6vw, 108px); font-weight: 800; letter-spacing: .01em; margin-top: 6px;
  background: linear-gradient(180deg, #fbe7a8 0%, #e9b949 45%, #a87a22 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 8px 30px rgba(233,185,73,.25));
}
.hm-sub {
  display: flex; align-items: center; justify-content: center; gap: 18px;
  margin: 26px auto 0; max-width: 760px; font-size: clamp(12px, 1.5vw, 16px); font-weight: 600; letter-spacing: .14em; color: #e9e4d8;
}
.hm-sub::before, .hm-sub::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, transparent, rgba(233,185,73,.8)); }
.hm-sub::after { background: linear-gradient(90deg, rgba(233,185,73,.8), transparent); }

/* Sân khấu: ảnh giữa, ô số liệu hai bên */
.hm-stage {
  display: grid; grid-template-columns: 1fr minmax(300px, 400px) 1fr; gap: 28px; align-items: center;
  margin-top: 40px;
}
.hm-col { display: grid; gap: 22px; }
.hm-left { justify-items: end; }
.hm-right { justify-items: start; }
.hm-left .glass-stat:nth-child(2) { margin-right: 48px; }
.hm-right .glass-stat:nth-child(1) { margin-left: 48px; }

.hm-photo { position: relative; }
.hm-photo::before {
  content: ""; position: absolute; left: 50%; top: 45%; width: 130%; aspect-ratio: 1; transform: translate(-50%, -50%);
  border-radius: 50%; z-index: -1; background: radial-gradient(circle, rgba(233,185,73,.28), transparent 62%); filter: blur(6px);
}
.hm-frame {
  position: relative; border-radius: 26px; overflow: hidden; aspect-ratio: 4 / 5;
  border: 1px solid rgba(233,185,73,.45);
  box-shadow: 0 50px 90px -40px #000, 0 0 0 6px rgba(233,185,73,.05), 0 0 90px -20px rgba(233,185,73,.45);
}
.hm-frame img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 18%; filter: saturate(.92) contrast(1.06); }
.hm-frame::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(6,6,8,0) 55%, rgba(6,6,8,.92) 100%),
    radial-gradient(ellipse at 50% 35%, transparent 55%, rgba(6,6,8,.45) 100%);
}
.hm-frame::before {
  content: ""; position: absolute; left: 0; right: 0; height: 2px; top: 0; z-index: 2; pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(247,218,138,.9), transparent);
  box-shadow: 0 0 18px rgba(233,185,73,.9); animation: scan 5s ease-in-out infinite;
}
@keyframes scan { 0%, 100% { top: 4%; opacity: 0; } 15% { opacity: 1; } 50% { top: 92%; opacity: .9; } 65% { opacity: 0; } }
.hm-plate { position: absolute; left: 0; right: 0; bottom: 22px; z-index: 3; text-align: center; }
.hm-plate strong { display: block; font-size: 20px; }
.hm-plate span { font-size: 11.5px; font-weight: 700; letter-spacing: .1em; color: var(--gold); }

/* Ô số liệu kính */
.glass-stat {
  position: relative; width: 220px; padding: 16px 18px; border-radius: 16px; text-align: left;
  background: linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.015) 45%), rgba(14,14,19,.62);
  border: 1px solid rgba(233,185,73,.28); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 24px 50px -24px #000, inset 0 1px 0 rgba(255,255,255,.06);
  animation: float 7s ease-in-out infinite; animation-delay: var(--d, 0s);
}
.glass-stat small { display: block; font-size: 11px; font-weight: 700; letter-spacing: .08em; color: var(--muted); }
.glass-stat b { display: block; margin: 4px 0 8px; font-size: 28px; font-weight: 800; line-height: 1.1; color: var(--gold-light); }
.glass-stat em { display: block; margin-top: 6px; font-style: normal; font-size: 12px; color: var(--dim); }
.glass-stat .bars { display: flex; align-items: flex-end; gap: 5px; height: 38px; }
.glass-stat .bars i { flex: 1; height: var(--h); border-radius: 3px 3px 0 0; background: linear-gradient(180deg, var(--gold-light), rgba(168,122,34,.5)); transform-origin: bottom; animation: grow 1.2s ease-out both; }
.glass-stat .bars i:nth-child(n) { animation-delay: calc(var(--i, 0) * 80ms); }
@keyframes grow { from { transform: scaleY(0); } }
.glass-stat .spark { width: 100%; height: 38px; overflow: visible; }
.glass-stat .spark path { fill: none; stroke: var(--gold-light); stroke-width: 2.2; stroke-linejoin: round; stroke-dasharray: 220; stroke-dashoffset: 220; animation: draw 1.8s .3s ease-out forwards; filter: drop-shadow(0 0 6px rgba(233,185,73,.7)); }
@keyframes draw { to { stroke-dashoffset: 0; } }
.glass-stat .ring {
  display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%;
  background: conic-gradient(var(--gold) calc(var(--p) * 1%), rgba(255,255,255,.08) 0);
  -webkit-mask: radial-gradient(circle, transparent 54%, #000 56%); mask: radial-gradient(circle, transparent 54%, #000 56%);
  position: absolute; right: 16px; top: 16px;
}
.glass-stat .ring span { display: none; }
.glass-stat .avatars span { width: 28px; height: 28px; font-size: 11px; }

.hm-cta { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 40px; position: relative; z-index: 2; }

@media (max-width: 960px) {
  .hm-stage { grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 30px; }
  .hm-photo { grid-column: 1 / -1; order: -1; justify-self: center; width: min(360px, 100%); margin-bottom: 8px; }
  .hm-col { display: contents; }
  .glass-stat { width: auto; margin: 0 !important; animation: none; padding: 14px; }
  .glass-stat b { font-size: 23px; }
  .glass-stat .ring { width: 38px; height: 38px; right: 12px; top: 12px; }
  .hm-sub { gap: 10px; letter-spacing: .08em; }
}
@media (max-width: 420px) { .hm-sub span { max-width: 230px; } }
@media (prefers-reduced-motion: reduce) { .hm-frame::before, .glass-stat { animation: none; } }
.glass-stat:has(.ring) small, .glass-stat:has(.ring) b { padding-right: 48px; }

/* =========================================================
   NỀN "MÀN HÌNH KÍNH 3D" — bảng dữ liệu kính lơ lửng (tông đen–vàng)
   ========================================================= */
.holo-scene {
  --mx: 0; --my: 0;
  position: absolute; inset: 0; z-index: -1; overflow: hidden; pointer-events: none;
  perspective: 1300px; perspective-origin: 50% 40%;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(233,185,73,.10), transparent 70%),
    radial-gradient(ellipse 40% 60% at 100% 40%, rgba(233,185,73,.07), transparent 70%);
}
.holo-world {
  position: absolute; inset: 0; transform-style: preserve-3d;
  transform: rotateY(calc(var(--mx) * 5deg)) rotateX(calc(var(--my) * -4deg));
  transition: transform .6s cubic-bezier(.2,.7,.2,1);
}

/* Đèn hắt trần + sàn bóng */
.holo-light { position: absolute; height: 3px; border-radius: 3px; background: linear-gradient(90deg, transparent, rgba(255,226,160,.95), transparent); box-shadow: 0 0 24px 6px rgba(233,185,73,.35), 0 0 80px 20px rgba(233,185,73,.12); }
.holo-light.l1 { top: 6%; left: -10%; width: 55%; transform: rotate(-4deg); opacity: .7; }
.holo-light.l2 { top: 3%; right: -6%; width: 46%; transform: rotate(5deg); opacity: .55; }
.holo-floor {
  position: absolute; left: 0; right: 0; bottom: 0; height: 26%;
  background:
    linear-gradient(180deg, transparent, rgba(233,185,73,.05) 40%, rgba(0,0,0,.5)),
    repeating-linear-gradient(90deg, rgba(233,185,73,.05) 0 1px, transparent 1px 120px);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 40%); mask-image: linear-gradient(180deg, transparent, #000 40%);
}
.holo-floor::before { content: ""; position: absolute; left: 10%; right: 10%; top: 30%; height: 1px; background: linear-gradient(90deg, transparent, rgba(247,218,138,.45), transparent); box-shadow: 0 0 14px rgba(233,185,73,.5); }

/* Tấm kính */
.holo-panel {
  position: absolute; aspect-ratio: 16 / 10; padding: 7px; border-radius: 14px;
  transform-style: preserve-3d;
  background: linear-gradient(135deg, rgba(255,235,190,.16), rgba(40,32,16,.25) 35%, rgba(10,10,14,.35) 70%, rgba(233,185,73,.10));
  border: 1px solid rgba(247,218,138,.6);
  box-shadow:
    inset 0 0 0 1px rgba(255,240,200,.08),
    inset 0 1px 0 rgba(255,245,215,.55),
    0 0 26px -2px rgba(233,185,73,.35),
    0 40px 70px -30px rgba(0,0,0,.9);
  backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px);
  animation: holoFloat 9s ease-in-out infinite;
}
.holo-panel::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
  background: linear-gradient(120deg, rgba(255,240,200,.9), transparent 18%, transparent 80%, rgba(233,185,73,.7));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
  padding: 1.5px; opacity: .8;
}
.holo-screen {
  position: relative; width: 100%; height: 100%; overflow: hidden; border-radius: 9px; padding: 9% 8%;
  background:
    radial-gradient(ellipse 90% 70% at 20% 0%, rgba(233,185,73,.20), transparent 60%),
    linear-gradient(160deg, rgba(28,24,16,.9), rgba(8,8,11,.92));
  display: flex; flex-direction: column; justify-content: flex-end; gap: 8%;
}
.holo-screen::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 35%, rgba(255,240,200,.14) 48%, transparent 60%) 160% 0 / 260% 100% no-repeat;
  animation: sheen 7s ease-in-out infinite;
}
@keyframes holoFloat { 50% { translate: 0 -14px; } }

/* Nội dung bên trong màn hình */
.h-lines { display: grid; gap: 5px; margin-bottom: auto; }
.h-lines i { display: block; height: 4px; border-radius: 2px; background: rgba(247,218,138,.45); }
.h-lines i + i { background: rgba(255,255,255,.12); }
.holo-screen svg { width: 100%; height: 58%; overflow: visible; }
.holo-screen .l1, .holo-screen .l2 { fill: none; stroke-width: 2; stroke-linecap: round; stroke-dasharray: 400; stroke-dashoffset: 400; animation: draw 2.6s .4s ease-out forwards; }
.holo-screen .l1 { stroke: #f7da8a; filter: drop-shadow(0 0 4px rgba(233,185,73,.9)); }
.holo-screen .l2 { stroke: rgba(255,255,255,.35); animation-delay: .9s; }
.h-bars { display: flex; align-items: flex-end; gap: 6%; height: 58%; }
.h-bars i { flex: 1; height: var(--h); border-radius: 2px 2px 0 0; background: linear-gradient(180deg, #f7da8a, rgba(168,122,34,.35)); transform-origin: bottom; animation: grow 1.4s calc(var(--i) * 90ms + .3s) ease-out both; box-shadow: 0 0 10px rgba(233,185,73,.35); }
.h-bars i:nth-child(even) { background: linear-gradient(180deg, rgba(255,255,255,.75), rgba(255,255,255,.12)); box-shadow: none; }
.holo-screen circle { fill: none; stroke-width: 5; }
.holo-screen .trk { stroke: rgba(255,255,255,.1); }
.holo-screen .val { stroke: #e9b949; stroke-linecap: round; stroke-dasharray: 125.6; stroke-dashoffset: calc(125.6 * (1 - var(--v))); transform: rotate(-90deg); transform-box: fill-box; transform-origin: center; filter: drop-shadow(0 0 4px rgba(233,185,73,.8)); }
.holo-screen .val.alt { stroke: #f4f0e8; filter: none; }
.holo-screen text { fill: #f4f0e8; font: 700 11px var(--font-body); text-anchor: middle; }
.h-logo { margin: auto 0; text-align: center; color: var(--gold-light); }
.h-logo svg { width: 20%; height: auto; margin: 0 auto 6%; }
.h-logo b { display: block; font-size: clamp(10px, 1.1vw, 15px); letter-spacing: .14em; color: #f7da8a; }
.h-logo span { display: block; margin-top: 4%; font-size: clamp(8px, .8vw, 11px); letter-spacing: .1em; color: rgba(244,240,232,.6); }

/* Vị trí & chiều sâu từng tấm (desktop) */
.holo-panel.p1 { width: 300px; left: 2%;  top: 12%; transform: translateZ(-60px)  rotateY(30deg) rotateX(4deg); }
.holo-panel.p2 { width: 270px; left: -3%; top: 44%; transform: translateZ(40px)   rotateY(34deg); animation-delay: -2s; }
.holo-panel.p3 { width: 260px; left: 6%;  top: 70%; transform: translateZ(-20px)  rotateY(24deg) rotateX(-4deg); animation-delay: -4s; }
.holo-panel.p4 { width: 210px; right: 5%; top: 8%;  transform: translateZ(-140px) rotateY(-28deg) rotateX(4deg); animation-delay: -1s; filter: blur(.6px); opacity: .85; }
.holo-panel.p5 { width: 260px; right: 2%; top: 36%; transform: translateZ(20px)   rotateY(-26deg); animation-delay: -3s; }
.holo-panel.p6 { width: 290px; right: -3%; top: 64%; transform: translateZ(60px)  rotateY(-32deg) rotateX(-3deg); animation-delay: -5s; }
.holo-panel.p7 { width: 190px; left: 42%; top: -2%; transform: translateZ(-420px) rotateX(10deg); filter: blur(2.5px); opacity: .45; animation-delay: -6s; }

/* Trang bio (cột hẹp, rất dài): chỉ giữ vài tấm ở đầu trang */
.bio .holo-panel.p3, .bio .holo-panel.p6, .bio .holo-panel.p7 { display: none; }
.bio .holo-panel.p2 { top: 22%; } .bio .holo-panel.p5 { top: 18%; }
.bio .holo-panel.p1 { top: 2%; } .bio .holo-panel.p4 { top: 1%; }

@media (max-width: 1100px) {
  .holo-panel { opacity: .7; }
  .holo-panel.p1, .holo-panel.p3 { left: -6%; }
  .holo-panel.p5, .holo-panel.p6 { right: -8%; }
}
@media (max-width: 760px) {
  .holo-panel { opacity: .5; animation: none; }
  .holo-panel.p3, .holo-panel.p6, .holo-panel.p7 { display: none; }
  .holo-panel.p1 { width: 170px; left: -18%; top: 6%; }
  .holo-panel.p2 { width: 160px; left: -22%; top: 48%; }
  .holo-panel.p4 { width: 140px; right: -14%; top: 4%; }
  .holo-panel.p5 { width: 160px; right: -22%; top: 40%; }
  .holo-light.l1 { width: 90%; } .holo-light.l2 { display: none; }
}
@media (prefers-reduced-motion: reduce) { .holo-panel, .holo-screen::after { animation: none; } .holo-world { transition: none; } }
@media (min-width: 1101px) {
  .hero-min .holo-panel.p3 { left: -5%; top: 74%; }
  .hero-min .holo-panel.p6 { right: -7%; top: 70%; }
}

/* =========================================================
   BỘ NÃO AI (phần chữ trang chủ)
   ========================================================= */
.hm-title { line-height: 1; }
.hm-brain { position: relative; display: block; width: min(860px, 100%); aspect-ratio: 16 / 9.4; margin: 0 auto; }
.brain-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hm-brain .hm-big {
  position: absolute; left: 50%; top: 45%; transform: translate(-52%, -50%); z-index: 2;
  font-size: clamp(72px, 12vw, 168px); line-height: 1; letter-spacing: -0.02em;
  background: linear-gradient(180deg, #ffffff, #fff6dc 60%, #f1d68c);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 18px rgba(247,218,138,.85)) drop-shadow(0 0 50px rgba(233,185,73,.55));
}
.hm-brain + .hm-gold { margin-top: -1%; }
.hb-icon {
  position: absolute; z-index: 2; transform: translate(-50%, -50%);
  width: 50px; height: 50px; border-radius: 50%; display: grid; place-items: center;
  color: var(--gold-light); background: rgba(10,10,14,.75);
  border: 1.5px solid rgba(247,218,138,.75);
  box-shadow: 0 0 18px rgba(233,185,73,.45), inset 0 0 12px rgba(233,185,73,.2);
  animation: hbPulse 3.2s ease-in-out infinite;
}
.hb-icon svg { width: 24px; height: 24px; }
.hb-icon:nth-child(odd) { animation-delay: -1.6s; }
@keyframes hbPulse { 50% { box-shadow: 0 0 30px rgba(233,185,73,.75), inset 0 0 14px rgba(233,185,73,.35); } }
@media (max-width: 760px) {
  .hm-brain { aspect-ratio: 16 / 11; }
  .hb-icon { width: 34px; height: 34px; }
  .hb-icon svg { width: 17px; height: 17px; }
  .hb4, .hb5 { display: none; }
  .hm-brain .hm-big { font-size: clamp(56px, 17vw, 90px); }
}
@media (prefers-reduced-motion: reduce) { .hb-icon { animation: none; } }

/* AI + MASTER CLUB nổi bật như một cụm, bớt khoảng trống phía trên */
.hero-min { padding-top: 14px; }
.hm-brain { aspect-ratio: 16 / 8.2; }
.hm-brain + .hm-gold {
  position: relative; z-index: 3;
  margin-top: -2.2%;
  font-size: clamp(50px, 9.6vw, 136px); letter-spacing: .02em; line-height: 1;
  background: linear-gradient(100deg, #f3c862 0%, #fbe7a8 30%, #fff8e1 45%, #fbe7a8 60%, #e9b949 80%, #c9962f 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 14px rgba(247,218,138,.75)) drop-shadow(0 0 46px rgba(233,185,73,.55));
  animation: goldShine 5s ease-in-out infinite;
}
@keyframes goldShine { 0%, 100% { background-position: 100% 0; } 50% { background-position: 0 0; } }
.hm-brain .hm-big { font-size: clamp(72px, 11vw, 156px); }
@media (max-width: 760px) {
  .hero-min { padding-top: 6px; }
  .hm-brain { aspect-ratio: 16 / 10; }
  .hm-brain + .hm-gold { font-size: clamp(42px, 13vw, 64px); margin-top: -4%; }
}
@media (prefers-reduced-motion: reduce) { .hm-brain + .hm-gold { animation: none; } }
.hm-brain + .hm-gold { white-space: nowrap; }
@media (max-width: 760px) { .hm-brain + .hm-gold { font-size: clamp(32px, 10.8vw, 60px); letter-spacing: 0; } }

/* Phụ đề dài + bằng chứng ngay dưới ảnh (trang chủ) */
.hm-sub { max-width: 900px; letter-spacing: .01em; font-size: clamp(15px, 1.9vw, 21px); font-weight: 600; line-height: 1.55; color: #ece7dc; }
.hm-sub span { flex: 0 1 auto; max-width: 720px; }
.hm-sub b { color: var(--gold-light); font-weight: 800; }
.hero-min { padding-bottom: 30px; }
.hero-min + .proof { padding-top: 20px; }
.proof-cta { margin-top: 34px; }
@media (max-width: 760px) {
  .hm-sub::before, .hm-sub::after { display: none; }
  .hm-sub br { display: none; }
}
.glass-stat b { white-space: nowrap; }
.glass-stat:has(.ring) b { padding-right: 0; }

/* Bằng chứng: lưới 2 ảnh mỗi hàng, giữ đúng thứ tự */
.proof-grid { columns: auto; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 980px; margin: 0 auto; }
.proof-grid .proof-shot { margin: 0; display: flex; flex-direction: column; }
.proof-grid .proof-shot figcaption { margin-top: auto; }
@media (max-width: 760px) {
  .proof-grid { gap: 10px; }
  .proof-grid .proof-shot { padding: 6px 6px 0; border-radius: 14px; }
  .proof-grid .proof-shot img { border-radius: 9px; }
  .proof-grid .proof-shot figcaption { font-size: 12px; padding: 8px 4px 10px; font-weight: 500; }
  .proof-grid .proof-tag { top: 11px; left: 11px; font-size: 9.5px; padding: 3px 8px; }
}

/* Đoạn khẳng định dưới ảnh bằng chứng */
.proof-note {
  position: relative; max-width: 820px; margin: 30px auto 0; padding: 22px 26px 22px 30px;
  text-align: left; font-size: clamp(15px, 1.6vw, 18px); line-height: 1.7; color: #e9e4d8;
  border-radius: 18px; border: 1px solid rgba(233,185,73,.35);
  background: linear-gradient(135deg, rgba(233,185,73,.12), rgba(233,185,73,.02) 60%), rgba(13,13,18,.8);
}
.proof-note::before { content: ""; position: absolute; left: 0; top: 18px; bottom: 18px; width: 4px; border-radius: 4px; background: var(--gold-grad); box-shadow: 0 0 14px rgba(233,185,73,.7); }
.proof-note b { color: var(--gold-light); font-weight: 800; }
.proof-compact .proof-note { margin-top: 14px; padding: 16px 16px 16px 20px; font-size: 14px; }
.proof-compact .proof-note::before { top: 14px; bottom: 14px; }

/* Bộ não gọn hơn */
.hm-brain { width: min(660px, 100%); aspect-ratio: 16 / 7.6; }
.hm-brain .hm-big { font-size: clamp(58px, 8.4vw, 120px); }
.hb-icon { width: 42px; height: 42px; }
.hb-icon svg { width: 20px; height: 20px; }
@media (max-width: 760px) {
  .hm-brain { width: 100%; aspect-ratio: 16 / 8.6; }
  .hm-brain .hm-big { font-size: clamp(46px, 14vw, 72px); }
  .hb-icon { width: 30px; height: 30px; }
  .hb-icon svg { width: 15px; height: 15px; }
}
.hm-sub span { max-width: 860px; }
@media (max-width: 1180px) { .hm-sub br { display: none; } }

/* Chữ AI co giãn theo bộ não: luôn to nhất mà vẫn nằm gọn bên trong */
.hm-brain { container-type: inline-size; }
.hm-brain .hm-big, .hm-brain .hm-big { font-size: 22cqw; top: 44%; letter-spacing: -0.03em; }
@media (max-width: 760px) { .hm-brain .hm-big { font-size: 22cqw; } }

/* Bộ não sát lên trên */
.hero-min { padding-top: 0; }
.hm-title { margin-top: 10px; }
@media (max-width: 760px) { .hero-min { padding-top: 0; } .hm-title { margin-top: 12px; } }
@media (min-width: 761px) { .hm-title { margin-top: 26px; } }
/* MASTER CLUB cách 2 vòng tròn dưới cùng của bộ não ~0,5 cm */
@media (max-width: 760px) { .hm-brain + .hm-gold { margin-top: 1px; } }

/* Bio: ảnh thấp hơn trên điện thoại để thấy ngay cả 3 quà tặng */
@media (max-width: 600px) {
  .bio { padding-top: 20px; }
  .bio-hero { aspect-ratio: 4 / 3.6; }
  .bio-hero img { object-position: 50% 22%; }
  .bio-hero-info .socials { margin-top: 10px; }
  .bio-pro .bio-block:first-of-type { margin-top: 20px; }
}
@media (max-width: 600px) {
  .bio-hero { aspect-ratio: 4 / 3.3; }
  .bio-pro .tiles { gap: 12px; }
  .gift-tile { padding: 12px 12px 12px 14px; gap: 12px; }
  .gift-thumb { width: 46px; height: 56px; font-size: 22px; }
  .gift-tile strong { font-size: 15px; }
  .gift-tile p { font-size: 12.5px; margin-top: 2px; }
  .gift-tile .go { width: 30px; height: 30px; }
  .bio-block-head { margin-bottom: 10px; }
}
/* Bio: ảnh trước, số liệu sau */
.proof-compact .proof-strip { margin-bottom: 14px; }