/* Bản sôi nổi: hero 3D, 5 bước, footage thật, bằng chứng, video, hỏi đáp */

.logo img { width: 34px; height: 34px; border-radius: 10px; }
.progress { position: fixed; inset: 0 0 auto; height: 3px; z-index: 60; background: var(--grad); transform-origin: 0 50%; transform: scaleX(0); pointer-events: none; }

/* ---------- hero 2 cột + mockup 3D ---------- */
.hero { text-align: left; padding-top: 64px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.hero h1 { margin-inline: 0; font-size: clamp(42px, 5.6vw, 78px); max-width: 11ch; }
.hero .lead { margin-inline: 0; }
.hero .cta-row { justify-content: flex-start; }
.trust { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 22px; color: var(--muted); font-size: 14px; }
.trust span::before { content: "✓ "; color: var(--lime); font-weight: 800; }
@media (max-width: 960px) {
  .hero { text-align: center; }
  .hero-grid { grid-template-columns: 1fr; gap: 64px; }
  .hero h1, .hero .lead { margin-inline: auto; }
  .hero .cta-row, .trust { justify-content: center; }
}
.stage { position: relative; perspective: 1400px; }
.stage::before { content: ""; position: absolute; inset: 12% 8%; border-radius: 50%; background: var(--grad); filter: blur(80px); opacity: .35; z-index: -1; }
.mock { --rx: 8deg; --ry: -16deg; position: relative; transform: rotateX(var(--rx)) rotateY(var(--ry)); transform-style: preserve-3d; border-radius: 18px; background: #0d0d12; border: 1px solid var(--line-2); box-shadow: 0 60px 120px -40px rgba(0,0,0,.85), 0 40px 90px -50px var(--pink); transition: transform .6s cubic-bezier(.2,.8,.2,1); }
.mock::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: linear-gradient(115deg, rgba(255,255,255,.12), transparent 38%); pointer-events: none; }
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border-bottom: 1px solid var(--line); font: 500 11px var(--mono); color: var(--dim); white-space: nowrap; overflow: hidden; }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; flex: none; }
.mock-bar i:nth-child(2) { background: #febc2e; }
.mock-bar i:nth-child(3) { background: #28c840; margin-right: 8px; }
.mock video { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 0 0 17px 17px; background: #000; }
.float-chip { position: absolute; padding: 8px 12px; border-radius: 12px; background: rgba(32,32,42,.94); border: 1px solid var(--line-2); font: 700 12px var(--mono); letter-spacing: .03em; white-space: nowrap; box-shadow: 0 18px 40px -16px rgba(0,0,0,.8); transform: translateZ(70px); animation: bobz 5s ease-in-out infinite; }
.float-chip small { display: block; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.fc1 { top: 14%; left: -7%; color: var(--amber); }
.fc2 { top: 44%; right: -8%; color: var(--lime); animation-delay: -1.6s; }
.fc3 { bottom: 9%; left: 6%; color: var(--brand); animation-delay: -3.1s; }
.fc4 { top: -6%; right: 10%; color: var(--pink); animation-delay: -2.3s; }
@keyframes bobz { 50% { transform: translateZ(70px) translateY(-10px); } }
@media (max-width: 960px) { .fc1 { left: 0; } .fc2 { right: 0; } }
@media (max-width: 560px) { .float-chip { font-size: 10px; padding: 6px 9px; } .fc3 { display: none; } }

/* ---------- 5 bước: bộ bài 3D ---------- */
.steps { display: grid; grid-template-columns: .85fr 1.15fr; gap: 44px; align-items: center; margin-top: 48px; }
.step-tabs { display: grid; gap: 10px; }
.step { position: relative; overflow: hidden; display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; padding: 15px 18px; border-radius: 18px; border: 1px solid var(--line); background: rgba(255,255,255,.03); text-align: left; cursor: pointer; transition: background .25s, border-color .25s, box-shadow .25s; }
.step b { grid-row: span 2; align-self: center; font: 800 24px var(--head); color: var(--dim); }
.step strong { font: 700 17px var(--head); }
.step small { color: var(--muted); font-size: 13px; line-height: 1.5; }
.step:hover { border-color: var(--line-2); }
.step.on { background: var(--card); border-color: var(--brand); box-shadow: 0 20px 40px -26px var(--brand); }
.step.on b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.step .timer { position: absolute; left: 0; bottom: 0; width: 100%; height: 3px; background: var(--grad); transform-origin: 0 50%; transform: scaleX(0); }
.steps.playing .step.on .timer { animation: timer 5s linear forwards; }
@keyframes timer { to { transform: scaleX(1); } }
@media (max-width: 960px) {
  .steps { grid-template-columns: 1fr; }
  .step-tabs { order: 2; grid-auto-flow: column; grid-auto-columns: minmax(230px, 1fr); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 6px; }
  .step { scroll-snap-align: start; }
}
.deck { position: relative; aspect-ratio: 16 / 10; perspective: 1600px; }
.card3d { position: absolute; inset: 0; margin: 0; border-radius: 20px; overflow: hidden; background: #0d0d12; border: 1px solid var(--line-2); box-shadow: 0 40px 80px -30px rgba(0,0,0,.85); transition: transform .8s cubic-bezier(.2,.8,.2,1), opacity .8s; will-change: transform; }
.card3d img { display: block; width: 100%; height: 100%; object-fit: cover; }
.card3d img.pan { object-position: 50% 0%; }
.card3d.on img.pan { animation: pan 10s ease-in-out infinite alternate; }
.card3d.on img.photo { animation: zoom 10s ease-in-out infinite alternate; }
@keyframes pan { 0%, 12% { object-position: 50% 0%; } 88%, 100% { object-position: 50% 100%; } }
@keyframes zoom { to { transform: scale(1.08); } }
.card3d figcaption { position: absolute; left: 14px; bottom: 14px; padding: 7px 13px; border-radius: 999px; background: rgba(13,13,18,.86); border: 1px solid var(--line-2); font: 700 12px var(--mono); letter-spacing: .04em; }

/* ---------- footage thật + case ---------- */
.film { position: relative; margin: 56px -20px 0; padding: 20px 0; background: #0b0b0f; border-block: 1px solid var(--line); rotate: -1.5deg; overflow: hidden; }
.film::before, .film::after { content: ""; position: absolute; left: 0; right: 0; height: 7px; background: repeating-linear-gradient(90deg, transparent 0 12px, rgba(255,255,255,.2) 12px 22px); }
.film::before { top: 6px; }
.film::after { bottom: 6px; }
.film-track { display: flex; gap: 8px; width: max-content; animation: marq 70s linear infinite; }
.film:hover .film-track { animation-play-state: paused; }
.film img { display: block; width: 200px; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 6px; }
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 56px; }
@media (max-width: 900px) { .cases { grid-template-columns: 1fr; } }
.case { position: relative; overflow: hidden; border-radius: 22px; background: var(--card); border: 1px solid var(--line); transition: transform .3s ease-out, border-color .3s, opacity .7s; }
.case:hover { border-color: var(--line-2); }
.case img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform .7s; }
.case:hover img { transform: scale(1.06); }
.case-body { padding: 18px 20px 20px; }
.case h3 { font: 800 24px var(--head); margin: 6px 0 14px; }
.case-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.case-stats div { min-width: 0; padding: 10px; border-radius: 12px; background: var(--bg-2); }
.case-stats b { display: block; font: 800 16px/1.3 var(--head); }
.case-stats span { font: 600 10px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.glare { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at var(--gx, 50%) var(--gy, 50%), rgba(255,255,255,.16), transparent 45%); opacity: 0; transition: opacity .3s; }
[data-tilt]:hover .glare { opacity: 1; }

/* ---------- bằng chứng (tự ẩn khi chưa có dữ liệu) ---------- */
.proof-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-top: 40px; }
.quotes { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; margin-top: 32px; text-align: left; }
.quote { position: relative; overflow: hidden; margin: 0; padding: 26px; border-radius: 22px; background: var(--card); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 20px; transition: transform .3s ease-out, opacity .7s; }
.quote::before { content: "\201C"; position: absolute; top: -10px; right: 18px; font: 800 96px/1 var(--head); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; opacity: .55; }
.quote blockquote { margin: 0; font-size: 16px; }
.who { display: flex; gap: 12px; align-items: center; margin-top: auto; }
.avatar { flex: none; width: 46px; height: 46px; border-radius: 50%; object-fit: cover; display: grid; place-items: center; background: var(--grad); color: #16161c; font: 800 17px var(--head); }
.who b { display: block; font: 700 15px var(--head); }
.who small { color: var(--muted); font-size: 13px; }
.brands { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 24px 44px; margin-top: 44px; }
.brands img { height: 34px; width: auto; filter: grayscale(1) brightness(1.7); opacity: .75; transition: .3s; }
.brands img:hover { filter: none; opacity: 1; }
.brands span { font: 800 18px var(--head); color: var(--muted); }

/* ---------- video hướng dẫn ---------- */
.player { position: relative; max-width: 980px; margin: 44px auto 0; padding: 3px; border-radius: 24px; background: var(--grad-loop); background-size: 200% 100%; animation: slide 6s linear infinite; box-shadow: 0 40px 100px -40px var(--pink); }
.player video { display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: 21px; background: #000; }
.play { position: absolute; inset: 3px; display: grid; place-items: center; border: 0; border-radius: 21px; cursor: pointer; background: radial-gradient(circle, rgba(0,0,0,.1), rgba(0,0,0,.55)); }
.play span { display: grid; place-items: center; width: 92px; height: 92px; padding-left: 6px; border-radius: 50%; background: var(--grad); color: #16161c; font-size: 30px; animation: pulse 2s infinite; transition: transform .25s; }
.play:hover span { transform: scale(1.1); }
.play em { position: absolute; bottom: 22px; left: 50%; translate: -50% 0; font: 700 13px var(--mono); font-style: normal; letter-spacing: .08em; color: #fff; text-shadow: 0 2px 10px rgba(0,0,0,.6); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(255,111,181,.6); } 70%, 100% { box-shadow: 0 0 0 26px transparent; } }
.player.vertical { max-width: 420px; }
.player.vertical video { aspect-ratio: 9 / 16; }
.playlist { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; max-width: 980px; margin: 18px auto 0; }
.pl-item { display: grid; align-content: start; gap: 4px; padding: 8px 8px 12px; border-radius: 16px; border: 1px solid var(--line); background: var(--card); text-align: left; cursor: pointer; transition: transform .25s, border-color .25s, box-shadow .25s; }
.pl-item:hover { transform: translateY(-3px); border-color: var(--line-2); }
.pl-item.on { border-color: var(--brand); box-shadow: 0 16px 34px -20px var(--brand); }
.pl-thumb { position: relative; display: block; aspect-ratio: 16 / 9; margin-bottom: 6px; border-radius: 10px; overflow: hidden; background: #000; }
.pl-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.pl-thumb span { position: absolute; right: 6px; bottom: 6px; padding: 2px 7px; border-radius: 6px; background: rgba(0,0,0,.78); font: 700 11px var(--mono); }
.pl-item.on .pl-thumb::after { content: "▶ ĐANG XEM"; position: absolute; left: 6px; top: 6px; padding: 3px 8px; border-radius: 6px; background: var(--grad); color: #16161c; font: 800 10px var(--mono); letter-spacing: .06em; }
.pl-item b { padding: 0 4px; font: 700 14px/1.35 var(--head); }
.pl-item small { padding: 0 4px; color: var(--muted); font-size: 12px; line-height: 1.45; }

/* ---------- hỏi đáp ---------- */
.narrow { width: min(820px, 100% - 32px); margin-inline: auto; }
.faq { display: grid; gap: 12px; margin-top: 40px; }
.faq details { border-radius: 18px; background: var(--card); border: 1px solid var(--line); transition: border-color .25s, background .25s, opacity .7s, transform .7s; }
.faq details[open] { border-color: var(--brand); background: linear-gradient(180deg, rgba(140,140,234,.09), var(--card) 70%); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 19px 22px; cursor: pointer; list-style: none; font: 700 17px var(--head); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--card-2); font: 700 18px var(--mono); transition: transform .35s cubic-bezier(.5,1.6,.4,1), background .25s, color .25s; }
.faq details[open] summary::after { transform: rotate(45deg); background: var(--brand); color: #16161c; }
.faq summary:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 18px; }
.faq details p { padding: 0 22px 20px; color: var(--muted); animation: faqIn .35s ease; }
.faq details a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
@keyframes faqIn { from { opacity: 0; transform: translateY(-6px); } }

/* ---------- tải về ---------- */
.downloads { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; max-width: 820px; margin: 40px auto 0; }
@media (max-width: 640px) { .downloads { grid-template-columns: 1fr; } }
.dl { display: grid; grid-template-columns: auto 1fr; gap: 2px 16px; align-items: center; padding: 22px 24px; border-radius: 22px; background: var(--card); border: 1px solid var(--line-2); transition: transform .25s, border-color .25s, box-shadow .25s, opacity .7s; }
.dl:hover { transform: translateY(-4px); border-color: var(--brand); box-shadow: 0 24px 50px -28px var(--brand); }
.dl-os { grid-row: span 2; font-size: 34px; }
.dl b { font: 800 18px var(--head); }
.dl small { color: var(--muted); font: 500 12px var(--mono); }
.dl-steps { max-width: 820px; margin: 28px auto 0; padding-left: 22px; display: grid; gap: 10px; color: var(--muted); }
.dl-steps b { color: var(--text); }

/* ---------- hoá đơn + đồng ý điều khoản ---------- */
.invoice-box { margin: -6px 0 16px; padding: 16px 16px 0; border-radius: 16px; background: var(--bg-2); border: 1px dashed var(--line-2); }
.consent a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
.check.err { color: var(--bad); }

/* ---------- footer ---------- */
.socials { display: flex; flex-wrap: wrap; gap: 8px; }
.socials a { padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--muted); font-weight: 600; transition: .2s; }
.socials a:hover { color: #16161c; background: var(--grad); border-color: transparent; }