/* =========================================================
   phanmemnho.vn — Giao diện chính
   Phong cách: dark luxury · gradient · glassmorphism
   ========================================================= */

:root {
  color-scheme: dark;

  /* Nền & bề mặt */
  --bg: #07070d;
  --bg-2: #0c0c16;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.14);

  /* Chữ */
  --text: #f4f4fb;
  --text-2: #b4b4c8;
  --text-3: #7b7b92;

  /* Thương hiệu */
  --violet: #8b7bff;
  --cyan: #4fd1ff;
  --pink: #ff5fb0;
  --grad: linear-gradient(110deg, #a594ff 0%, #4fd1ff 45%, #ff7ac0 100%);
  --grad-btn: linear-gradient(110deg, #7a66ff, #4f9dff 55%, #39d0ff);

  /* Danh mục */
  --office: #4f8cff;
  --media: #ff5fb0;
  --edu: #ffb547;
  --life: #3ee6a0;

  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --container: 1220px;
  --header-h: 76px;
}

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; }
p { margin: 0; }
::selection { background: rgba(139, 123, 255, 0.4); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 8px; }

svg:not([fill]) { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.container { width: min(100% - 32px, var(--container)); margin-inline: auto; }

.grad-text {
  background: var(--grad);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradShift 6s linear infinite;
}
@keyframes gradShift { to { background-position: 200% center; } }

/* ---------- Hiệu ứng nền ---------- */
.bg-aurora { position: fixed; inset: 0; z-index: -2; overflow: hidden; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.45; will-change: transform; }
.b1 { width: 620px; height: 620px; background: #5a46ff; top: -220px; left: -160px; animation: float1 22s var(--ease) infinite alternate; }
.b2 { width: 520px; height: 520px; background: #0aa3d6; top: 20%; right: -200px; opacity: 0.32; animation: float2 26s var(--ease) infinite alternate; }
.b3 { width: 480px; height: 480px; background: #c0367d; bottom: -220px; left: 30%; opacity: 0.28; animation: float3 30s var(--ease) infinite alternate; }
@keyframes float1 { to { transform: translate(180px, 140px) scale(1.15); } }
@keyframes float2 { to { transform: translate(-160px, 120px) scale(0.9); } }
@keyframes float3 { to { transform: translate(-140px, -160px) scale(1.2); } }

.bg-grain {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.06; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.cursor-glow {
  position: fixed; left: 0; top: 0; width: 520px; height: 520px; margin: -260px 0 0 -260px;
  border-radius: 50%; pointer-events: none; z-index: -1;
  background: radial-gradient(circle, rgba(124, 108, 255, 0.16), transparent 62%);
  transform: translate3d(var(--x, -999px), var(--y, -999px), 0);
  transition: opacity 0.4s;
}
@media (hover: none) { .cursor-glow { display: none; } }

.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 100%; z-index: 200;
  background: var(--grad); transform-origin: 0 50%; transform: scaleX(var(--p, 0));
}

/* ---------- Nút ---------- */
.btn {
  --pad: 14px 24px;
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: var(--pad); border-radius: 999px; font-weight: 600; font-size: 15px; white-space: nowrap;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.3s, border-color 0.3s;
  isolation: isolate; overflow: hidden;
}
.btn svg { width: 18px; height: 18px; transition: transform 0.35s var(--ease); }
.btn:hover svg:last-child { transform: translateX(3px); }
.btn--primary {
  background: var(--grad-btn); color: #fff;
  box-shadow: 0 10px 30px -10px rgba(98, 122, 255, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn--primary::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.45) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform 0.8s var(--ease);
}
.btn--primary:hover::before { transform: translateX(120%); }
.btn--primary:hover { box-shadow: 0 16px 40px -10px rgba(98, 122, 255, 1), inset 0 1px 0 rgba(255, 255, 255, 0.25); }
.btn--ghost { background: var(--surface); border: 1px solid var(--border-2); backdrop-filter: blur(10px); }
.btn--ghost:hover { background: var(--surface-2); border-color: rgba(255, 255, 255, 0.28); }
.btn--sm { --pad: 10px 18px; font-size: 14px; }
.btn--lg { --pad: 17px 30px; font-size: 16px; }
.btn--block { width: 100%; }

.icon-btn {
  position: relative; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--border); transition: background 0.3s, transform 0.3s var(--ease);
}
.icon-btn:hover { background: var(--surface-2); transform: translateY(-1px); }
.icon-btn svg { width: 20px; height: 20px; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header-h);
  display: flex; align-items: center; transition: background 0.4s, border-color 0.4s, height 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.header.is-scrolled {
  --header-h: 64px;
  background: rgba(8, 8, 14, 0.66); backdrop-filter: blur(18px) saturate(1.4); -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-color: var(--border);
}
.header { transition: transform 0.45s var(--ease), background 0.4s, height 0.4s var(--ease); }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.logo__mark { width: 34px; height: 34px; transition: transform 0.6s var(--ease); }
.logo:hover .logo__mark { transform: rotate(90deg) scale(1.05); }
.logo__text b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.logo__text i { font-style: normal; color: var(--text-3); font-weight: 500; }

.nav { display: flex; gap: 4px; padding: 5px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); }
.nav a { position: relative; padding: 8px 16px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--text-2); transition: color 0.3s, background 0.3s; }
.nav a:hover, .nav a.is-active { color: var(--text); background: rgba(255, 255, 255, 0.07); }

.header__actions { display: flex; align-items: center; gap: 10px; }
.cart-badge {
  position: absolute; top: -4px; right: -4px; min-width: 20px; height: 20px; padding: 0 5px; border-radius: 999px;
  display: grid; place-items: center; font-size: 11px; font-weight: 700; background: var(--pink); color: #fff;
  box-shadow: 0 0 0 3px var(--bg); transform: scale(0); transition: transform 0.4s var(--ease);
}
.cart-badge.has-items { transform: scale(1); }
.cart-badge.bump { animation: bump 0.5s var(--ease); }
@keyframes bump { 40% { transform: scale(1.5); } }

.burger { display: none; }
.burger span { position: absolute; left: 13px; width: 18px; height: 2px; border-radius: 2px; background: currentColor; transition: transform 0.4s var(--ease), opacity 0.3s; }
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 27px; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: calc(var(--header-h) + 40px) 0 80px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 30%, transparent 75%);
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
.hero__inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }

.pill {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px 7px 10px; margin-bottom: 28px;
  border-radius: 999px; font-size: 13.5px; color: var(--text-2);
  background: var(--surface); border: 1px solid var(--border-2); backdrop-filter: blur(10px);
  transition: border-color 0.3s, background 0.3s;
}
.pill b { color: var(--text); font-weight: 600; }
.pill svg { width: 15px; height: 15px; transition: transform 0.3s var(--ease); }
.pill:hover { border-color: rgba(139, 123, 255, 0.6); background: rgba(139, 123, 255, 0.08); }
.pill:hover svg { transform: translateX(3px); }
.pill__dot { position: relative; width: 8px; height: 8px; border-radius: 50%; background: var(--life); }
.pill__dot::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--life); animation: ping 1.8s var(--ease) infinite; }
@keyframes ping { to { transform: scale(3); opacity: 0; } }

.hero__title { font-size: clamp(38px, 5.4vw, 74px); font-weight: 800; letter-spacing: -0.035em; line-height: 1.04; }
.hero__title .grad-text { white-space: nowrap; }
.rotator { position: relative; display: block; height: 1.12em; overflow: hidden; margin-top: 0.04em; }
.rotator__word {
  position: absolute; left: 0; top: 0; white-space: nowrap;
  transform: translateY(110%) rotateX(-60deg); opacity: 0; filter: blur(6px);
  transition: transform 0.8s var(--ease), opacity 0.6s, filter 0.6s;
  transform-origin: 50% 100%;
}
.rotator__word.is-active { transform: none; opacity: 1; filter: none; }
.rotator__word.is-leaving { transform: translateY(-110%) rotateX(60deg); opacity: 0; filter: blur(6px); }
.rotator__word[data-color="office"] { color: var(--office); text-shadow: 0 0 40px rgba(79,140,255,.5); }
.rotator__word[data-color="media"] { color: var(--media); text-shadow: 0 0 40px rgba(255,95,176,.5); }
.rotator__word[data-color="edu"] { color: var(--edu); text-shadow: 0 0 40px rgba(255,181,71,.45); }
.rotator__word[data-color="life"] { color: var(--life); text-shadow: 0 0 40px rgba(62,230,160,.45); }

.hero__lead { margin-top: 24px; max-width: 540px; font-size: clamp(16px, 1.4vw, 18.5px); color: var(--text-2); }
.hero__lead em { font-style: normal; color: var(--text); font-weight: 600; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero__stats { display: flex; gap: 40px; margin: 48px 0 0; padding: 0; list-style: none; }
.hero__stats li { display: flex; flex-direction: column; }
.hero__stats strong { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; }
.hero__stats span { font-size: 13.5px; color: var(--text-3); }
.hero__stats li + li { padding-left: 40px; border-left: 1px solid var(--border); }

/* Mockup */
.hero__visual { position: relative; perspective: 1400px; }
.mock { position: relative; transform-style: preserve-3d; transition: transform 0.25s ease-out; animation: hover-y 7s ease-in-out infinite; }
@keyframes hover-y { 50% { translate: 0 -14px; } }
.mock__glow { position: absolute; inset: 10% 5%; background: var(--grad); filter: blur(70px); opacity: 0.45; border-radius: 40px; transform: translateZ(-60px); }
.mock__window {
  position: relative; border-radius: 22px; overflow: hidden;
  background: linear-gradient(160deg, rgba(30, 30, 52, 0.92), rgba(14, 14, 26, 0.95));
  border: 1px solid var(--border-2); box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.1);
}
.mock__bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; border-bottom: 1px solid var(--border); background: rgba(255,255,255,.02); }
.mock__bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.mock__bar i:nth-child(2) { background: #febc2e; }
.mock__bar i:nth-child(3) { background: #28c840; }
.mock__bar span { margin-left: 10px; font-size: 12px; color: var(--text-3); }
.mock__body { display: grid; grid-template-columns: 54px 1fr; min-height: 340px; }
.mock__side { display: flex; flex-direction: column; gap: 12px; padding: 16px 12px; border-right: 1px solid var(--border); }
.mock__side span { height: 30px; border-radius: 9px; background: rgba(255,255,255,.05); }
.mock__side span.is-on { background: var(--grad-btn); box-shadow: 0 6px 20px -6px rgba(98,122,255,.9); }
.mock__canvas { display: grid; grid-template-rows: 1fr auto; gap: 16px; padding: 20px; }
.mock__photo {
  position: relative; justify-self: center; width: min(210px, 70%); aspect-ratio: 3 / 4; border-radius: 10px; overflow: hidden;
  background: linear-gradient(180deg, #3b7bff, #2554d8); animation: bgSwap 9s steps(1) infinite;
}
@keyframes bgSwap { 0% { background: linear-gradient(180deg, #3b7bff, #2554d8); } 33% { background: linear-gradient(180deg, #f7f9ff, #dfe6f5); } 66% { background: linear-gradient(180deg, #ff6b7a, #e0445a); } }
.mock__person { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; }
.mock__person .head { width: 38%; aspect-ratio: 0.82; border-radius: 50% 50% 46% 46%; background: linear-gradient(180deg, #f2c7a5, #d9a27c); margin-bottom: -6%; position: relative; z-index: 1; box-shadow: inset 0 18px 0 -6px #2a1d17; }
.mock__person .body { width: 82%; height: 34%; border-radius: 48% 48% 0 0; background: linear-gradient(180deg, #1e2233, #12141f); }
.mock__scan { position: absolute; left: 0; right: 0; height: 30%; background: linear-gradient(180deg, transparent, rgba(79, 209, 255, 0.45), transparent); border-bottom: 2px solid var(--cyan); animation: scan 3s var(--ease) infinite; }
@keyframes scan { 0% { top: -30%; } 100% { top: 100%; } }
.mock__corner { position: absolute; width: 16px; height: 16px; border: 2px solid #fff; opacity: 0.9; }
.c1 { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.c2 { top: 8px; right: 8px; border-left: 0; border-bottom: 0; }
.c3 { bottom: 8px; left: 8px; border-right: 0; border-top: 0; }
.c4 { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }
.mock__tools { display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 14px; background: rgba(255,255,255,.04); border: 1px solid var(--border); }
.sw { width: 24px; height: 24px; border-radius: 50%; background: var(--c); box-shadow: 0 0 0 2px rgba(255,255,255,.12); }
.sw:first-child { box-shadow: 0 0 0 2px var(--bg-2), 0 0 0 4px var(--cyan); }
.mock__btn { white-space: nowrap; margin-left: auto; padding: 7px 14px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--grad-btn); }

.float-card {
  position: absolute; display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 16px;
  background: rgba(20, 20, 36, 0.72); border: 1px solid var(--border-2); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 50px -15px rgba(0,0,0,.7); font-size: 13px; transform: translateZ(60px);
}
.float-card b { display: block; font-weight: 600; font-size: 13.5px; }
.float-card small { color: var(--text-3); font-size: 12px; white-space: nowrap; }
.fc__icon { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 11px; background: linear-gradient(135deg, var(--c1), var(--c2)); }
.fc__icon svg { width: 18px; height: 18px; stroke-width: 2.4; }
.fc1 { top: 18%; left: -36px; animation: bob 6s ease-in-out infinite; }
.fc2 { bottom: 14%; right: -30px; animation: bob 7s ease-in-out -2s infinite; }
.fc3 { top: -26px; right: 12%; flex-direction: column; align-items: flex-start; gap: 8px; animation: bob 8s ease-in-out -4s infinite; }
@keyframes bob { 50% { translate: 0 -10px; } }
.mini-chart { display: flex; align-items: flex-end; gap: 5px; height: 36px; }
.mini-chart span { width: 9px; height: var(--h); border-radius: 3px; background: var(--grad); transform-origin: bottom; animation: grow 2.4s var(--ease) infinite alternate; }
.mini-chart span:nth-child(2n) { animation-delay: -1.2s; }
@keyframes grow { from { transform: scaleY(0.4); } }

.orbit { position: absolute; inset: -40px; pointer-events: none; animation: spin 40s linear infinite; z-index: -1; }
.orbit::before { content: ""; position: absolute; inset: 0; border-radius: 50%; border: 1px dashed rgba(255,255,255,.08); }
.orbit__item {
  position: absolute; top: 50%; left: 50%; width: 42px; height: 42px; margin: -21px; border-radius: 13px;
  display: grid; place-items: center; color: var(--c); background: rgba(14,14,26,.8); border: 1px solid var(--border-2);
  box-shadow: 0 0 24px -4px var(--c);
  transform: rotate(calc(var(--i) * 90deg + 30deg)) translateX(min(320px, 46vw)) rotate(calc(var(--i) * -90deg - 30deg));
}
.orbit__item svg { width: 20px; height: 20px; animation: spin 40s linear infinite reverse; }
@keyframes spin { to { rotate: 360deg; } }

.scroll-hint { position: absolute; bottom: 28px; left: 50%; translate: -50% 0; width: 26px; height: 42px; border-radius: 14px; border: 1.5px solid var(--border-2); }
.scroll-hint span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--text-2); animation: wheel 2s var(--ease) infinite; }
@keyframes wheel { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- Marquee ---------- */
.marquee { position: relative; overflow: hidden; padding: 22px 0; border-block: 1px solid var(--border); background: rgba(255,255,255,.015);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee__track { display: flex; gap: 48px; width: max-content; animation: marquee 38s linear infinite; }
.marquee__track span { font-size: 15px; font-weight: 500; color: var(--text-2); white-space: nowrap; }
.marquee__track span::first-letter { color: var(--violet); }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Section ---------- */
.section { position: relative; padding: clamp(80px, 11vw, 140px) 0; }
.section--tight { padding: clamp(60px, 8vw, 100px) 0; }
.section--flush { padding-bottom: clamp(60px, 8vw, 100px); }
.section__head { max-width: 880px; margin: 0 auto 56px; text-align: center; }
.section__head h2 { font-size: clamp(32px, 4.6vw, 54px); font-weight: 800; letter-spacing: -0.03em; }
.section__head h2 .grad-text, .cta h2 .grad-text { white-space: nowrap; }
.section__head p { margin-top: 16px; color: var(--text-2); font-size: 17px; }
.section__head--row { max-width: none; display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; text-align: left; margin-bottom: 28px; flex-wrap: wrap; }
.section__head--left { text-align: left; margin: 0; }
.section__head--left .btn { margin-top: 28px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 16px; font-size: 13px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--cyan);
}
.eyebrow::before { content: ""; width: 18px; height: 1.5px; background: currentColor; }

/* Reveal khi cuộn */
.reveal { opacity: 0; transform: translateY(36px); filter: blur(8px); transition: opacity 1s var(--ease), transform 1s var(--ease), filter 1s var(--ease); transition-delay: var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; filter: none; }

/* Spotlight theo chuột */
.spotlight { position: relative; isolation: isolate; }
.spotlight::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; z-index: -1; pointer-events: none; opacity: 0; transition: opacity 0.4s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,.08), transparent 45%);
}
.spotlight::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none; opacity: 0; transition: opacity 0.4s;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), rgba(139,123,255,.9), rgba(79,209,255,.4) 40%, transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
}
.spotlight:hover::before, .spotlight:hover::after { opacity: 1; }

/* ---------- Danh mục ---------- */
.cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cat {
  --c: var(--office);
  position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 14px; min-height: 360px;
  padding: 28px; border-radius: var(--radius); text-align: left; overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015)); border: 1px solid var(--border);
  transition: transform 0.6s var(--ease), border-color 0.4s, box-shadow 0.6s var(--ease);
}
.cat[data-cat="media"] { --c: var(--media); }
.cat[data-cat="edu"] { --c: var(--edu); }
.cat[data-cat="life"] { --c: var(--life); }
.cat:hover { transform: translateY(-8px); box-shadow: 0 30px 60px -30px var(--c); }
.cat__num { position: absolute; top: 22px; right: 26px; font-size: 13px; font-weight: 600; color: var(--text-3); letter-spacing: .1em; }
.cat__icon {
  display: grid; place-items: center; width: 54px; height: 54px; border-radius: 16px; color: var(--c);
  background: color-mix(in srgb, var(--c) 14%, transparent); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
  transition: transform 0.6s var(--ease);
}
.cat:hover .cat__icon { transform: rotate(-8deg) scale(1.08); }
.cat__icon svg { width: 26px; height: 26px; }
.cat h3 { font-size: 23px; font-weight: 700; margin-top: 6px; }
.cat p { color: var(--text-2); font-size: 14.5px; }
.cat__meta { display: inline-flex; align-items: center; gap: 6px; margin-top: auto; font-size: 14px; color: var(--text-2); position: relative; z-index: 1; }
.cat__meta b { color: var(--c); font-weight: 700; }
.cat__meta svg { width: 16px; height: 16px; transition: transform 0.4s var(--ease); }
.cat:hover .cat__meta svg { transform: translate(3px, -3px); }
.cat__art { position: absolute; right: -30px; bottom: -30px; width: 170px; height: 170px; pointer-events: none; opacity: 0.55; transition: transform 0.8s var(--ease), opacity 0.4s; }
.cat:hover .cat__art { transform: scale(1.12) rotate(-6deg); opacity: 0.9; }
.cat__art i { position: absolute; border-radius: 18px; border: 1px solid color-mix(in srgb, var(--c) 50%, transparent); background: color-mix(in srgb, var(--c) 10%, transparent); }
.cat__art i:nth-child(1) { inset: 20px 40px 40px 20px; }
.cat__art i:nth-child(2) { inset: 45px 15px 15px 45px; }
.cat__art i:nth-child(3) { inset: 70px 70px 70px 70px; background: var(--c); filter: blur(18px); border: 0; }
.art-media i, .art-life i { border-radius: 50%; }
.art-edu i:nth-child(1), .art-edu i:nth-child(2) { transform: rotate(45deg); }

/* ---------- 4 cột danh sách phần mềm ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.section--cols { padding: calc(var(--header-h) + 36px) 0 clamp(60px, 8vw, 100px); }
.cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: stretch; }
.col {
  --c: var(--office);
  display: flex; flex-direction: column; border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015)); border: 1px solid var(--border);
  transition: border-color .4s, box-shadow .6s var(--ease);
}
.col[data-cat="media"] { --c: var(--media); }
.col[data-cat="edu"] { --c: var(--edu); }
.col[data-cat="life"] { --c: var(--life); }
.col:hover { border-color: color-mix(in srgb, var(--c) 35%, transparent); box-shadow: 0 30px 60px -36px var(--c); }
.col.is-flash { animation: colFlash 1.4s var(--ease); }
@keyframes colFlash { 20% { border-color: var(--c); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c) 35%, transparent), 0 30px 70px -30px var(--c); } }
.col__head {
  position: relative; display: flex; align-items: center; gap: 14px; padding: 20px 18px 18px; overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in srgb, var(--c) 16%, transparent), transparent);
}
.col__head::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--c), transparent); }
.col__icon {
  display: grid; place-items: center; flex: none; width: 46px; height: 46px; border-radius: 14px; color: var(--c);
  background: color-mix(in srgb, var(--c) 14%, transparent); border: 1px solid color-mix(in srgb, var(--c) 40%, transparent);
  transition: transform .6s var(--ease);
}
.col:hover .col__icon { transform: rotate(-8deg) scale(1.06); }
.col__icon svg { width: 22px; height: 22px; }
.col__head h2 { font-size: 19px; font-weight: 700; letter-spacing: -.01em; }
.col__head small { display: block; margin-top: 2px; font-size: 12.5px; color: var(--text-3); line-height: 1.4; }

.col__list { display: grid; gap: 2px; margin: 0; padding: 8px; list-style: none; }
.item {
  display: grid; grid-template-columns: 38px 1fr auto; gap: 12px; align-items: center; padding: 10px; border-radius: 14px;
  cursor: pointer; transition: background .3s, transform .4s var(--ease);
}
.item:hover, .item:focus-visible { background: rgba(255,255,255,.06); transform: translateX(3px); outline: 0; }
.item__icon {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; color: #fff;
  background: linear-gradient(135deg, color-mix(in srgb, var(--c) 100%, #fff 15%), color-mix(in srgb, var(--c) 65%, #000 35%));
  box-shadow: 0 8px 20px -10px var(--c), inset 0 1px 0 rgba(255,255,255,.3);
}
.item__icon svg { width: 19px; height: 19px; }
.item__body { min-width: 0; }
.item__body b { display: block; font-size: 14.5px; font-weight: 600; line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item__body small { display: block; margin-top: 2px; font-size: 12.5px; color: var(--text-3); line-height: 1.4; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item__meta { display: flex; align-items: center; gap: 8px; margin-top: 6px; flex-wrap: wrap; }
.item__meta s { font-size: 12px; color: var(--text-3); }
.item__meta .badge { padding: 2px 7px; font-size: 10px; font-style: normal; }
.item__price { font-size: 13.5px; font-weight: 700; white-space: nowrap; color: var(--text); }
.item__add {
  display: grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; color: var(--text-2);
  background: color-mix(in srgb, var(--c) 12%, transparent); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
  transition: background .3s, color .3s, transform .3s var(--ease);
}
.item__add svg { width: 15px; height: 15px; stroke-width: 2.2; }
.item__add:hover { background: var(--c); color: #0a0a12; transform: scale(1.1); }
.item__add.is-added { background: var(--c); color: #0a0a12; }
.col__more {
  display: flex; align-items: center; justify-content: center; gap: 8px; margin: auto 8px 8px; padding: 12px; border-radius: 14px;
  font-size: 13.5px; font-weight: 600; color: var(--c); background: color-mix(in srgb, var(--c) 8%, transparent);
  border: 1px dashed color-mix(in srgb, var(--c) 30%, transparent); transition: background .3s;
}
.col__more svg { width: 16px; height: 16px; transition: transform .35s var(--ease); }
.col__more:hover { background: color-mix(in srgb, var(--c) 16%, transparent); }
.col.is-expanded .col__more svg { transform: rotate(180deg); }
.col:not(.is-expanded) .item.is-extra { display: none; }
.col.is-expanded .item.is-extra { animation: cardIn .5s var(--ease) backwards; }

/* ---------- Sản phẩm ---------- */
.toolbar { display: flex; gap: 12px; flex-wrap: wrap; }
.search { display: flex; align-items: center; gap: 10px; padding: 0 16px; height: 46px; min-width: 260px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); transition: border-color 0.3s, background 0.3s; }
.search:focus-within { border-color: rgba(139,123,255,.7); background: var(--surface-2); }
.search svg { width: 18px; height: 18px; color: var(--text-3); flex: none; }
.search input { flex: 1; min-width: 0; background: none; border: 0; outline: 0; font-size: 14.5px; }
.search input::placeholder { color: var(--text-3); }
.select { position: relative; }
.select::after { content: ""; position: absolute; right: 16px; top: 50%; width: 7px; height: 7px; border-right: 1.8px solid var(--text-2); border-bottom: 1.8px solid var(--text-2); transform: translateY(-70%) rotate(45deg); pointer-events: none; }
.select select { appearance: none; height: 46px; padding: 0 42px 0 18px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-size: 14.5px; cursor: pointer; outline: 0; }
.select option { background: var(--bg-2); }

.tabs { position: relative; display: inline-flex; gap: 4px; padding: 5px; margin-bottom: 36px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); max-width: 100%; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab { position: relative; z-index: 1; padding: 10px 20px; border-radius: 999px; font-size: 14.5px; font-weight: 500; color: var(--text-2); white-space: nowrap; transition: color 0.3s; }
.tab.is-active { color: #fff; }
.tabs__ink { position: absolute; top: 5px; bottom: 5px; left: 0; border-radius: 999px; background: var(--grad-btn); box-shadow: 0 8px 24px -8px rgba(98,122,255,.9); transition: transform 0.55s var(--ease), width 0.55s var(--ease); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 20px; }
.card {
  --c: var(--office);
  position: relative; display: flex; flex-direction: column; padding: 22px; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015)); border: 1px solid var(--border);
  transform-style: preserve-3d; transition: transform 0.2s ease-out, border-color 0.4s, box-shadow 0.5s var(--ease);
  animation: cardIn 0.7s var(--ease) backwards; animation-delay: calc(var(--i, 0) * 50ms);
  cursor: pointer;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(24px) scale(0.97); } }
.card[data-cat="media"] { --c: var(--media); }
.card[data-cat="edu"] { --c: var(--edu); }
.card[data-cat="life"] { --c: var(--life); }
.card:hover { border-color: color-mix(in srgb, var(--c) 40%, transparent); box-shadow: 0 30px 60px -30px color-mix(in srgb, var(--c) 70%, transparent); }
.card__top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 20px; transform: translateZ(30px); }
.card__icon {
  position: relative; display: grid; place-items: center; width: 60px; height: 60px; border-radius: 18px; color: #fff;
  background: linear-gradient(135deg, color-mix(in srgb, var(--c) 100%, #fff 15%), color-mix(in srgb, var(--c) 70%, #000 30%));
  box-shadow: 0 12px 30px -10px var(--c), inset 0 1px 0 rgba(255,255,255,.35);
}
.card__icon svg { width: 28px; height: 28px; }
.badge { padding: 5px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 700; letter-spacing: .02em; background: rgba(255,255,255,.08); border: 1px solid var(--border-2); }
.badge--hot { background: linear-gradient(110deg, #ff5f6d, #ffb547); border: 0; color: #1a0b00; }
.badge--new { background: linear-gradient(110deg, #3ee6a0, #4fd1ff); border: 0; color: #00170f; }
.badge--ai { background: linear-gradient(110deg, #8b7bff, #ff5fb0); border: 0; color: #fff; }
.card__cat { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--c); }
.card h3 { margin-top: 6px; font-size: 19px; font-weight: 700; }
.card__desc { margin-top: 8px; font-size: 14px; color: var(--text-2); flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card__rating { display: flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 13px; color: var(--text-3); }
.stars { color: #ffc65c; letter-spacing: 1px; }
.card__foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--border-2); transform: translateZ(20px); }
.price { display: flex; flex-direction: column; line-height: 1.2; }
.price b { font-size: 19px; font-weight: 700; }
.price s { font-size: 13px; color: var(--text-3); }
.add-btn {
  display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 16px; border-radius: 999px; font-size: 14px; font-weight: 600;
  background: color-mix(in srgb, var(--c) 16%, transparent); color: var(--text); border: 1px solid color-mix(in srgb, var(--c) 45%, transparent);
  transition: background 0.3s, transform 0.3s var(--ease);
}
.add-btn svg { width: 17px; height: 17px; }
.add-btn:hover { background: var(--c); color: #0a0a12; transform: scale(1.04); }
.add-btn.is-added { background: var(--c); color: #0a0a12; }
.empty { padding: 60px 0; text-align: center; color: var(--text-3); }

/* ---------- Bento ---------- */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.tile {
  position: relative; padding: 30px; border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015)); border: 1px solid var(--border);
}
.tile--wide { grid-column: span 2; display: grid; grid-template-columns: 1fr 1.1fr; gap: 28px; align-items: center; }
.tile h3 { font-size: 21px; font-weight: 700; }
.tile p { margin-top: 10px; color: var(--text-2); font-size: 14.5px; }
.tile__icon { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 22px; border-radius: 16px; background: linear-gradient(135deg, var(--c1), var(--c2)); box-shadow: 0 12px 30px -12px var(--c1); }
.tile__icon svg { width: 24px; height: 24px; stroke-width: 2; }
.tile--stat { display: flex; flex-direction: column; justify-content: center; }
.big-num { font-size: clamp(56px, 7vw, 84px); font-weight: 800; letter-spacing: -0.04em; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.speed { display: grid; gap: 16px; }
.speed__row { display: grid; grid-template-columns: 112px 1fr 44px; align-items: center; gap: 12px; font-size: 13px; color: var(--text-2); }
.speed__row b { text-align: right; color: var(--text); }
.speed__bar { height: 10px; border-radius: 999px; background: rgba(255,255,255,.06); overflow: hidden; }
.speed__bar i { display: block; height: 100%; width: var(--w); border-radius: inherit; background: rgba(255,255,255,.2); transform-origin: left; transform: scaleX(0); transition: transform 1.6s var(--ease) .3s; }
.speed__row:first-child .speed__bar i { background: var(--grad); box-shadow: 0 0 20px rgba(79,209,255,.6); }
.speed__row:first-child span { color: var(--text); font-weight: 600; }
.is-in .speed__bar i { transform: scaleX(1); }

.chat { display: flex; flex-direction: column; gap: 10px; }
.bubble { max-width: 85%; padding: 10px 14px; border-radius: 16px; font-size: 13.5px; opacity: 0; transform: translateY(10px) scale(.96); transition: all .6s var(--ease); }
.bubble--in { align-self: flex-start; background: rgba(255,255,255,.07); border-bottom-left-radius: 4px; }
.bubble--out { align-self: flex-end; background: var(--grad-btn); border-bottom-right-radius: 4px; }
.is-in .bubble { opacity: 1; transform: none; }
.is-in .bubble:nth-child(1) { transition-delay: .3s; }
.is-in .bubble:nth-child(2) { transition-delay: 1s; }
.is-in .bubble:nth-child(3) { transition-delay: 1.7s; }
.typing { display: flex; gap: 4px; padding: 12px 14px; border-radius: 16px; background: rgba(255,255,255,.07); align-self: flex-start; opacity: 0; transition: opacity .4s 2.3s; }
.is-in .typing { opacity: 1; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--text-2); animation: dot 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .15s; }
.typing i:nth-child(3) { animation-delay: .3s; }
@keyframes dot { 30% { transform: translateY(-4px); opacity: 1; } 0%, 60%, 100% { opacity: .4; } }

/* ---------- Steps ---------- */
.steps { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 0; padding: 0; list-style: none; }
.steps::before { content: ""; position: absolute; top: 32px; left: 16%; right: 16%; height: 1px; background: linear-gradient(90deg, transparent, var(--border-2), var(--violet), var(--border-2), transparent); }
.step { position: relative; text-align: center; padding: 0 12px; }
.step__n {
  position: relative; display: grid; place-items: center; width: 64px; height: 64px; margin: 0 auto 22px; border-radius: 50%;
  font-size: 22px; font-weight: 800; background: var(--bg); border: 1px solid var(--border-2);
  box-shadow: 0 0 0 8px var(--bg), 0 0 40px -6px rgba(139,123,255,.7);
}
.step__n::after { content: ""; position: absolute; inset: -1px; border-radius: 50%; padding: 1.5px; background: conic-gradient(from 0deg, var(--violet), var(--cyan), var(--pink), var(--violet)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; animation: spin 4s linear infinite; }
.step h3 { font-size: 19px; }
.step p { margin-top: 8px; color: var(--text-2); font-size: 14.5px; }

/* ---------- Bảng giá ---------- */
.switch { position: relative; display: inline-flex; margin-top: 28px; padding: 5px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); }
.switch button { position: relative; z-index: 1; padding: 10px 22px; border-radius: 999px; font-size: 14.5px; font-weight: 500; color: var(--text-2); transition: color .3s; }
.switch button.is-active { color: #fff; }
.switch em { font-style: normal; margin-left: 4px; padding: 2px 7px; border-radius: 999px; font-size: 11px; font-weight: 700; background: var(--life); color: #00170f; }
.switch__ink { position: absolute; top: 5px; bottom: 5px; left: 0; border-radius: 999px; background: rgba(255,255,255,.1); border: 1px solid var(--border-2); transition: transform .5s var(--ease), width .5s var(--ease); }

.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plans--single { grid-template-columns: minmax(0, 520px); justify-content: center; }
.plan__fine { margin-top: 16px; font-size: 13px; line-height: 1.55; color: var(--text-3); text-align: center; }
.plan {
  position: relative; display: flex; flex-direction: column; padding: 34px 30px; border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015)); border: 1px solid var(--border);
  transition: transform .6s var(--ease);
}
.plan:hover { transform: translateY(-6px); }
.plan--hot { background: linear-gradient(180deg, rgba(122,102,255,.16), rgba(57,208,255,.05)); border-color: rgba(139,123,255,.5); box-shadow: 0 40px 80px -40px rgba(122,102,255,.8); }
.plan--hot::before { opacity: 1; }
.plan__badge { position: absolute; top: -13px; left: 50%; translate: -50% 0; padding: 5px 14px; border-radius: 999px; font-size: 12px; font-weight: 700; background: var(--grad-btn); white-space: nowrap; box-shadow: 0 8px 20px -6px rgba(98,122,255,.9); }
.plan h3 { font-size: 21px; }
.plan__desc { margin-top: 6px; color: var(--text-3); font-size: 14px; }
.plan__price { display: flex; align-items: baseline; gap: 6px; margin: 26px 0; }
.plan__price .amount { font-size: 44px; font-weight: 800; letter-spacing: -.03em; transition: opacity .25s, transform .25s; }
.plan__price .amount.is-swap { opacity: 0; transform: translateY(-8px); }
.plan__price .unit { color: var(--text-3); font-size: 14px; }
.plan ul { display: grid; gap: 12px; margin: 0 0 30px; padding: 0; list-style: none; flex: 1; }
.plan li { position: relative; padding-left: 28px; font-size: 14.5px; color: var(--text-2); }
.plan li::before { content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 50%; background: rgba(62,230,160,.14) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233ee6a0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center/12px no-repeat; }

/* ---------- Reviews ---------- */
.reviews { display: grid; gap: 18px; overflow: hidden; padding-block: 4px; mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.reviews__row { display: flex; gap: 18px; width: max-content; animation: marquee 60s linear infinite; }
.reviews__row--rev { animation-direction: reverse; animation-duration: 70s; }
.reviews:hover .reviews__row { animation-play-state: paused; }
.review { width: 360px; padding: 24px; border-radius: var(--radius); background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015)); border: 1px solid var(--border); }
.review p { font-size: 14.5px; color: var(--text-2); }
.review__who { display: flex; align-items: center; gap: 12px; margin-top: 18px; }
.avatar { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; font-weight: 700; font-size: 15px; color: #fff; background: linear-gradient(135deg, var(--a1), var(--a2)); }
.review__who b { display: block; font-size: 14px; }
.review__who small { color: var(--text-3); font-size: 12.5px; }
.review .stars { font-size: 13px; margin-bottom: 10px; }

/* ---------- FAQ ---------- */
.faq-wrap { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 64px; align-items: start; }
.faq { display: grid; gap: 12px; }
.faq__item { border-radius: 18px; background: var(--surface); border: 1px solid var(--border); transition: background .3s, border-color .3s; }
.faq__item[open] { background: var(--surface-2); border-color: var(--border-2); }
.faq__item summary { position: relative; padding: 20px 60px 20px 24px; font-weight: 600; font-size: 16px; cursor: pointer; list-style: none; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after, .faq__item summary::before { content: ""; position: absolute; right: 26px; top: 50%; width: 14px; height: 2px; border-radius: 2px; background: var(--text-2); transition: transform .4s var(--ease); }
.faq__item summary::before { transform: rotate(90deg); }
.faq__item[open] summary::before { transform: rotate(0); }
.faq__body { overflow: hidden; }
.faq__body p { padding: 0 24px 22px; color: var(--text-2); font-size: 15px; }

/* ---------- CTA ---------- */
.cta {
  position: relative; display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; padding: clamp(36px, 6vw, 64px);
  border-radius: 32px; overflow: hidden; background: linear-gradient(135deg, rgba(122,102,255,.2), rgba(14,14,26,.6) 50%, rgba(255,95,176,.15)); border: 1px solid var(--border-2);
}
.cta__glow { position: absolute; width: 400px; height: 400px; right: -100px; top: -160px; border-radius: 50%; background: var(--cyan); filter: blur(120px); opacity: .25; animation: float2 14s ease-in-out infinite alternate; }
.cta h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; }
.cta p { margin-top: 12px; color: var(--text-2); }
.cta__form { position: relative; display: flex; gap: 8px; padding: 6px; border-radius: 999px; background: rgba(0,0,0,.35); border: 1px solid var(--border-2); }
.cta__form input { flex: 1; min-width: 0; padding: 0 18px; background: none; border: 0; outline: 0; font-size: 15px; }
.cta__form input::placeholder { color: var(--text-3); }
.cta__form.is-error { animation: shake .4s; border-color: #ff5f6d; }
@keyframes shake { 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }

/* ---------- Footer ---------- */
.footer { position: relative; padding-top: 80px; border-top: 1px solid var(--border); overflow: hidden; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer__brand p { margin-top: 16px; max-width: 300px; color: var(--text-3); font-size: 14.5px; }
.footer h4 { margin-bottom: 18px; font-size: 14px; font-weight: 600; color: var(--text); }
.footer__grid > div:not(.footer__brand) { display: flex; flex-direction: column; gap: 10px; }
.footer__grid a:not(.logo) { font-size: 14.5px; color: var(--text-3); transition: color .3s, transform .3s var(--ease); width: fit-content; }
.footer__grid a:not(.logo):hover { color: var(--text); transform: translateX(3px); }
.socials { display: flex; gap: 10px; margin-top: 22px; }
.socials a { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border); }
.socials a:hover { background: var(--surface-2); transform: translateY(-2px) !important; }
.socials svg { width: 18px; height: 18px; }
.footer__bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: 60px; padding: 24px 0; border-top: 1px solid var(--border); font-size: 13.5px; color: var(--text-3); }
.footer__bottom a:hover { color: var(--text); }
.footer__giant {
  font-size: clamp(56px, 14.5vw, 220px); font-weight: 800; letter-spacing: -.06em; line-height: .8; text-align: center; margin-bottom: -0.12em;
  background: linear-gradient(180deg, rgba(255,255,255,.09), transparent 80%); -webkit-background-clip: text; background-clip: text; color: transparent; user-select: none;
}

/* ---------- Overlay / Drawer / Modal ---------- */
.overlay { position: fixed; inset: 0; z-index: 140; background: rgba(4,4,10,.6); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); opacity: 0; visibility: hidden; transition: opacity .4s, visibility .4s; }
.overlay.is-open { opacity: 1; visibility: visible; }

.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 150; width: min(420px, 100%); display: flex; flex-direction: column;
  background: rgba(12,12,22,.94); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); border-left: 1px solid var(--border-2);
  transform: translateX(100%); transition: transform .6s var(--ease);
}
.drawer.is-open { transform: none; }
.drawer__head { display: flex; align-items: center; justify-content: space-between; padding: 22px 24px; border-bottom: 1px solid var(--border); }
.drawer__head h3 { font-size: 20px; }
.drawer__head span { color: var(--text-3); font-weight: 500; }
.drawer__body { flex: 1; overflow-y: auto; padding: 16px 24px; display: flex; flex-direction: column; gap: 12px; }
.drawer__foot { padding: 20px 24px 24px; border-top: 1px solid var(--border); display: grid; gap: 14px; }
.drawer__foot small { text-align: center; color: var(--text-3); font-size: 12.5px; }
.drawer__email { display: grid; gap: 6px; font-size: 13px; font-weight: 600; color: var(--text-2); }
.drawer__email input { width: 100%; padding: 12px 14px; border-radius: 12px; background: rgba(0,0,0,.35); border: 1px solid var(--border-2); outline: 0; font-size: 15px; font-weight: 400; transition: border-color .2s; }
.drawer__email input::placeholder { color: var(--text-3); }
.drawer__email input:focus { border-color: var(--violet); }
.drawer__email input.is-error { border-color: #ff5f6d; animation: shake .4s; }
.total { display: flex; justify-content: space-between; align-items: baseline; }
.total span { color: var(--text-2); }
.total b { font-size: 24px; }
.line { --c: var(--office); display: grid; grid-template-columns: 48px 1fr auto; gap: 14px; align-items: center; padding: 12px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border); animation: cardIn .5s var(--ease) both; }
.line[data-cat="media"] { --c: var(--media); } .line[data-cat="edu"] { --c: var(--edu); } .line[data-cat="life"] { --c: var(--life); }
.line .card__icon { width: 48px; height: 48px; border-radius: 14px; }
.line .card__icon svg { width: 22px; height: 22px; }
.line b { display: block; font-size: 14.5px; }
.line small { color: var(--text-3); }
.line__rm { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: var(--text-3); transition: background .3s, color .3s; }
.line__rm:hover { background: rgba(255,95,109,.15); color: #ff7b86; }
.line__rm svg { width: 16px; height: 16px; }
.cart-empty { margin: auto; text-align: center; color: var(--text-3); padding: 40px 0; }
.cart-empty svg { width: 56px; height: 56px; margin: 0 auto 14px; opacity: .5; }

.modal { position: fixed; inset: 0; z-index: 160; display: grid; place-items: center; padding: 16px; opacity: 0; visibility: hidden; transition: opacity .4s, visibility .4s; background: rgba(4,4,10,.65); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.modal.is-open { opacity: 1; visibility: visible; }
.modal__card {
  --c: var(--office);
  position: relative; width: min(760px, 100%); max-height: calc(100vh - 32px); overflow-y: auto; border-radius: 28px;
  background: linear-gradient(180deg, rgba(26,26,44,.97), rgba(12,12,22,.98)); border: 1px solid var(--border-2); box-shadow: var(--shadow);
  transform: translateY(30px) scale(.96); transition: transform .6s var(--ease);
}
.modal.is-open .modal__card { transform: none; }
.modal__card[data-cat="media"] { --c: var(--media); } .modal__card[data-cat="edu"] { --c: var(--edu); } .modal__card[data-cat="life"] { --c: var(--life); }
.modal__hero { position: relative; padding: 36px 36px 28px; display: flex; gap: 22px; align-items: center; overflow: hidden; border-bottom: 1px solid var(--border); }
.modal__hero::before { content: ""; position: absolute; width: 360px; height: 360px; left: -80px; top: -200px; border-radius: 50%; background: var(--c); filter: blur(100px); opacity: .35; }
.modal__hero .card__icon { width: 84px; height: 84px; border-radius: 24px; flex: none; }
.modal__hero .card__icon svg { width: 40px; height: 40px; }
.modal__hero h3 { font-size: 28px; margin-top: 4px; }
.modal__hero p { color: var(--text-2); margin-top: 6px; }
.modal__close { position: absolute; top: 16px; right: 16px; z-index: 2; }
.modal__content { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; padding: 28px 36px 36px; }
.modal__content h4 { font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); margin-bottom: 14px; }
.feat { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.feat li { position: relative; padding-left: 28px; font-size: 14.5px; color: var(--text-2); }
.feat li::before { content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 6px; background: color-mix(in srgb, var(--c) 20%, transparent); border: 1px solid color-mix(in srgb, var(--c) 50%, transparent); }
.feat li::after { content: ""; position: absolute; left: 6px; top: 7px; width: 6px; height: 9px; border: solid var(--c); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.specs { display: grid; gap: 10px; margin-bottom: 22px; font-size: 14px; }
.specs div { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 10px; border-bottom: 1px dashed var(--border); }
.specs span { color: var(--text-3); }
.buy-box { padding: 20px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); display: grid; gap: 12px; }
.buy-box .price b { font-size: 28px; }

/* ---------- Spotlight search ---------- */
.spot { position: fixed; inset: 0; z-index: 170; display: flex; justify-content: center; align-items: flex-start; padding: 12vh 16px 16px; background: rgba(4,4,10,.6); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s; }
.spot.is-open { opacity: 1; visibility: visible; }
.spot__box { width: min(620px, 100%); border-radius: 22px; overflow: hidden; background: rgba(18,18,32,.97); border: 1px solid var(--border-2); box-shadow: var(--shadow); transform: translateY(-16px) scale(.98); transition: transform .4s var(--ease); }
.spot.is-open .spot__box { transform: none; }
.spot__input { display: flex; align-items: center; gap: 12px; padding: 18px 20px; border-bottom: 1px solid var(--border); }
.spot__input svg { width: 20px; height: 20px; color: var(--text-3); flex: none; }
.spot__input input { flex: 1; min-width: 0; background: none; border: 0; outline: 0; font-size: 16px; }
kbd { padding: 3px 8px; border-radius: 6px; font: 600 11px/1.4 inherit; color: var(--text-3); border: 1px solid var(--border-2); }
.spot__list { max-height: 50vh; overflow-y: auto; padding: 8px; }
.spot__item { --c: var(--office); display: flex; align-items: center; gap: 14px; width: 100%; padding: 10px 12px; border-radius: 14px; text-align: left; transition: background .2s; }
.spot__item[data-cat="media"] { --c: var(--media); } .spot__item[data-cat="edu"] { --c: var(--edu); } .spot__item[data-cat="life"] { --c: var(--life); }
.spot__item:hover, .spot__item.is-focus { background: var(--surface-2); }
.spot__item .card__icon { width: 40px; height: 40px; border-radius: 12px; }
.spot__item .card__icon svg { width: 20px; height: 20px; }
.spot__item b { display: block; font-size: 14.5px; }
.spot__item small { color: var(--text-3); font-size: 12.5px; }
.spot__item em { margin-left: auto; font-style: normal; font-weight: 600; font-size: 14px; }
.spot__none { padding: 28px; text-align: center; color: var(--text-3); }

/* ---------- Toast ---------- */
.toasts { position: fixed; left: 50%; bottom: 24px; z-index: 200; translate: -50% 0; display: grid; gap: 10px; justify-items: center; pointer-events: none; }
.toast { display: flex; align-items: center; gap: 10px; padding: 12px 18px; border-radius: 999px; font-size: 14px; background: rgba(22,22,38,.95); border: 1px solid var(--border-2); box-shadow: var(--shadow); backdrop-filter: blur(12px); animation: toastIn .5s var(--ease) both; }
.toast.out { animation: toastOut .4s var(--ease) forwards; }
.toast i { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; background: var(--life); color: #00170f; font-style: normal; font-weight: 800; font-size: 12px; }
@keyframes toastIn { from { opacity: 0; transform: translateY(20px) scale(.9); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(10px) scale(.95); } }

/* Hạt bay vào giỏ */
.fly { position: fixed; z-index: 300; width: 18px; height: 18px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 20px var(--cyan); pointer-events: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .hero__inner { grid-template-columns: 1fr; gap: 72px; }
  .hero__visual { max-width: 560px; margin-inline: auto; width: 100%; }
  .hero__copy { text-align: center; }
  .hero__lead { margin-inline: auto; }
  .hero__cta, .hero__stats { justify-content: center; }
  .rotator__word { left: 50%; translate: -50% 0; }
  .cats, .cols { grid-template-columns: repeat(2, 1fr); }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .tile--wide { grid-column: span 2; }
  .plans { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .faq-wrap { grid-template-columns: 1fr; gap: 36px; }
  .cta { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .nav {
    position: fixed; top: var(--header-h); left: 16px; right: 16px; flex-direction: column; gap: 2px; padding: 10px; border-radius: 20px;
    background: rgba(12,12,22,.96); backdrop-filter: blur(20px); border-color: var(--border-2);
    opacity: 0; visibility: hidden; transform: translateY(-10px); transition: opacity .3s, transform .4s var(--ease), visibility .3s;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav a { padding: 14px 16px; font-size: 16px; }
  .burger { display: grid; }
  .hide-sm { display: none; }
}

@media (max-width: 640px) {
  .hero { padding-top: calc(var(--header-h) + 24px); }
  .hero__stats { gap: 20px; }
  .hero__stats li + li { padding-left: 20px; }
  .hero__stats strong { font-size: 24px; }
  .hero__cta .btn { width: 100%; }
  .hide-xs { display: none; }
  .header__inner { gap: 10px; }
  .header__actions { gap: 6px; }
  .icon-btn { width: 40px; height: 40px; }
  .burger span { left: 11px; }
  .burger span:nth-child(1) { top: 13px; } .burger span:nth-child(2) { top: 19px; } .burger span:nth-child(3) { top: 25px; }
  .logo { font-size: 17px; gap: 8px; }
  .logo__mark { width: 30px; height: 30px; }
  .pill b { white-space: nowrap; }
  .float-card { transform: scale(.85); }
  .fc1 { left: -8px; } .fc2 { right: -8px; } .fc3 { right: 4%; }
  .orbit { display: none; }
  .mock__body { min-height: 280px; grid-template-columns: 44px 1fr; }
  .mock__tools { gap: 7px; }
  .sw { width: 20px; height: 20px; }
  .sw:nth-child(4) { display: none; }
  .cats, .bento, .cols { grid-template-columns: 1fr; }
  .section--cols { padding-top: calc(var(--header-h) + 20px); }
  .tile--wide { grid-column: auto; grid-template-columns: 1fr; }
  .cat { min-height: 280px; }
  .steps { grid-template-columns: 1fr; gap: 36px; }
  .steps::before { display: none; }
  .section__head--row { flex-direction: column; align-items: stretch; }
  .toolbar { flex-direction: column; }
  .search { min-width: 0; }
  .select select { width: 100%; }
  .review { width: 290px; }
  .modal__content { grid-template-columns: 1fr; padding: 24px; }
  .modal__hero { padding: 28px 24px 22px; flex-direction: column; align-items: flex-start; }
  .cta__form { flex-direction: column; border-radius: 22px; }
  .cta__form input { padding: 12px 14px; }
  .footer__grid { grid-template-columns: 1fr; }
  .scroll-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; filter: none; }
}