/* Trang chủ V17 (10/10/2026) — gọn, 1 câu dịch vụ, không font/thư viện ngoài, không script. */
:root{--bg:#0B0E14;--s1:#11161F;--s2:#161D29;--s3:#1C2533;--line:#1F2937;--tx:#E8EEF6;--tx2:#AEBACB;--tx3:#8090A6;
  --pri:#2F81F7;--pri-h:#4A93FF;--pri-tx:#9CC2FF;--ok:#39D98A;--ok-t:rgba(57,217,138,.12);--mute:#6B7A90;--teal:#22C29A;
  --f:Inter,"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;--mono:"JetBrains Mono",ui-monospace,Consolas,monospace}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{background:var(--bg);color:var(--tx);font:400 15px/1.55 var(--f);-webkit-font-smoothing:antialiased}
a{color:var(--pri-tx);text-decoration:none}a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--pri);outline-offset:2px;border-radius:6px}
.icon-sprite{display:none}
.icon{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-999px;top:8px;z-index:50;background:var(--pri);color:#fff;padding:8px 12px;border-radius:8px}.skip-link:focus{left:12px}

/* ---- Thanh trên ---- */
.site-header{position:sticky;top:0;z-index:20;background:rgba(11,14,20,.86);backdrop-filter:blur(10px);border-bottom:1px solid rgba(31,41,55,.6)}
.header-inner{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:700;font-size:18px}.brand:hover{text-decoration:none}.brand b{color:var(--pri-tx);font-weight:700}
.top-nav{display:flex;gap:20px;margin-right:auto}.top-nav a{color:var(--tx2);font-size:14px}
.header-actions{display:flex;align-items:center;gap:10px}
.lang-btn{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 10px;border:1px solid var(--line);border-radius:9px;color:var(--tx2);font-size:13px;font-weight:600}.lang-btn:hover{text-decoration:none;border-color:#33425A}
.login-link{color:var(--tx);font-weight:600;font-size:14px;padding:0 6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 16px;border-radius:10px;border:1px solid #2A3546;background:var(--s2);color:var(--tx);font-weight:650;font-size:14px;transition:background .15s,border-color .15s}
.btn:hover{text-decoration:none;background:var(--s3);border-color:#3A475B}
.btn-pri{background:var(--pri);border-color:var(--pri);color:#fff}.btn-pri:hover{background:var(--pri-h);border-color:var(--pri-h)}
.mobile-nav{display:none;position:relative}
.icon-btn{list-style:none;display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;cursor:pointer;color:var(--tx)}.icon-btn::-webkit-details-marker{display:none}
.mobile-nav .i-shut,.mobile-nav[open] .i-open{display:none}.mobile-nav[open] .i-shut{display:block}
.mobile-menu{position:absolute;right:0;top:48px;min-width:210px;display:flex;flex-direction:column;padding:8px;background:var(--s1);border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 40px rgba(0,0,0,.45)}
.mobile-menu a{padding:10px 12px;border-radius:8px;color:var(--tx)}.mobile-menu a:hover{background:var(--s2);text-decoration:none}

/* ---- Banner ---- */
.hero{position:relative;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);grid-template-areas:"head head" "art rack";gap:18px 28px;align-items:center;
  margin:24px 0 8px;padding:28px;border:1px solid #1B2431;border-radius:18px;overflow:hidden;
  background:radial-gradient(120% 90% at 20% 0%,rgba(47,129,247,.13),transparent 60%),radial-gradient(80% 80% at 100% 100%,rgba(34,194,154,.07),transparent 60%),#0B0F17}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(0deg,rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:26px 26px;
  -webkit-mask-image:radial-gradient(90% 90% at 50% 40%,#000,transparent);mask-image:radial-gradient(90% 90% at 50% 40%,#000,transparent)}
.hero-head{grid-area:head;position:relative;display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.hero h1{font-size:40px;line-height:1.12;font-weight:720;letter-spacing:-.03em}
.hero h1 span{display:block}.hero h1 .h1-2{color:var(--tx2)}
.stock{display:inline-flex;align-items:baseline;gap:8px;padding:8px 12px;border:1px solid rgba(57,217,138,.3);border-radius:10px;background:var(--ok-t);color:var(--ok);font-size:13px;font-weight:600}
.stock:hover{text-decoration:none}.stock b{font-size:18px}
.hero-art{grid-area:art;position:relative;margin:0;animation:rise .7s cubic-bezier(.2,.8,.2,1) both}
/* 11/10 (vie): bỏ quả cầu, phóng to màn hình. Video quay từ luồng thật; khung + bóng tĩnh (không filter) nên không tốn CPU */
.mh{position:relative;padding:0 10px 10px;border:1px solid #26344A;border-radius:14px;background:#0F1520;box-shadow:0 22px 44px rgba(0,0,0,.5),0 0 0 1px rgba(79,195,247,.05)}
.mh-top{display:flex;align-items:center;gap:7px;height:38px;padding:0 4px}
.mh-top>i{width:10px;height:10px;border-radius:50%;background:#3A4558}
.mh-url{display:flex;align-items:center;gap:7px;flex:1;max-width:340px;height:24px;margin:0 auto 0 14px;padding:0 12px;border:1px solid #222C3D;border-radius:12px;background:#0A0F18;font:500 12px/1 var(--mono);color:#8A97AD}
.mh-url .icon{width:13px;height:13px;color:#22C29A}
.mh-live{display:flex;align-items:center;gap:6px;padding:4px 9px;border-radius:9px;background:#0A1120;font:700 10.5px/1 var(--f);letter-spacing:.06em;color:#E6F7F1}
.mh-live b{width:7px;height:7px;border-radius:50%;background:#22C29A;animation:pulse 1.6s ease-in-out infinite}
.mh-man{position:relative;aspect-ratio:960/558;border-radius:8px;overflow:hidden;background:#0B0E14 url(/static/v17/man-hinh.webp) center/cover no-repeat}
.mh-man video{display:block;width:100%;height:100%;object-fit:cover}

/* Dàn máy */
.rack{grid-area:rack;position:relative;list-style:none;display:flex;flex-direction:column;gap:8px;margin-right:-29px;animation:drift 9s ease-in-out infinite alternate}
.rack li{animation:rkin .7s cubic-bezier(.2,.8,.2,1) backwards;animation-delay:calc(var(--i) * .08s)}
.rack li:nth-child(6n+1){margin-left:6%}.rack li:nth-child(6n+2){margin-left:3%}.rack li:nth-child(6n+4){margin-left:9%}.rack li:nth-child(6n+5){margin-left:3%}.rack li:nth-child(6n){margin-left:7%}
.rk{display:flex;align-items:center;justify-content:space-between;gap:10px;height:38px;padding:0 16px;border:1px solid #1C2636;border-right:0;border-radius:10px 0 0 10px;
  background:rgba(17,22,31,.92);font:500 13px/1 var(--mono);color:#B4C0D3;white-space:nowrap;transition:border-color .15s,background .15s}
/* 11/10 (vie): hiệu ứng cho cột chữ bên phải — vệt sáng quét ngang từng dòng lần lượt + viền sáng chạy tuần tự (chỉ transform/opacity) */
.rk{position:relative;overflow:hidden;isolation:isolate}
.rk::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(100deg,transparent 30%,rgba(79,195,247,.14) 48%,rgba(79,195,247,.22) 50%,rgba(79,195,247,.14) 52%,transparent 70%);
  transform:translateX(-110%);animation:rkquet 7s cubic-bezier(.4,0,.2,1) infinite;animation-delay:calc(1.2s + var(--i) * .35s)}
.rk::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;box-shadow:inset 0 0 0 1px rgba(79,195,247,.55),0 0 18px rgba(79,195,247,.18);opacity:0;
  animation:rksang 7s ease-in-out infinite;animation-delay:calc(1.2s + var(--i) * .35s)}
/* T-137 (Motion skill — chỉ animate transform/opacity): chữ sáng lên khi vệt quét đi qua nhờ lớp ::after nằm TRÊN chữ
   với mix-blend-mode:screen. Bỏ hiệu ứng cũ animate background-position trên chữ (bắt trình duyệt vẽ lại 60 lần/giây). */
.rk::after{z-index:1;mix-blend-mode:screen}
.rk-tx .up{color:var(--tx)} /* giữ tên gói sáng như cũ (trước đây lấy màu --tx từ dải gradient đã bỏ) */
@keyframes rkquet{0%{transform:translateX(-110%)}22%,100%{transform:translateX(110%)}}
@keyframes rksang{0%,100%{opacity:0}8%{opacity:1}24%{opacity:0}}
.rk:hover{text-decoration:none;border-color:#33425A;background:rgba(22,29,41,.95);color:var(--tx)}
.rk-tx{overflow:hidden;text-overflow:ellipsis}.rk-tx b{font-weight:600;color:var(--tx)}.up{text-transform:uppercase}
.rk-led{display:flex;gap:8px;flex:none;margin-right:2%} /* T-137: gọn hơn để dòng gói đủ chỗ RAM + SSD */.rk-led i{width:10px;height:10px;border-radius:3px;background:#2A3548}
.rk.on .rk-led i:first-child{background:var(--teal);animation:pulse 2.6s ease-in-out infinite}.rk.on .rk-led i:nth-child(2){background:var(--teal)}
.rk.live .rk-led i:nth-child(2){background:#3B82F6}.rk.wallet .rk-led i:first-child{background:#E0A43A}.rk.wallet .rk-led i:nth-child(2){background:#2A3548}

@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes rkin{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:none}}
@keyframes drift{from{translate:0 0}to{translate:-12px 0}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* ---- Bảng giá ---- */
.sec{margin-top:36px}
.sec-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:var(--tx3)}
.sec-head h2,.sec-title{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--tx2)}
.sec-head .cur{margin-left:auto;font-size:12px}
.empty{color:var(--tx3)}
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:stretch}
.plan{display:flex;flex-direction:column;gap:12px;padding:18px;background:var(--s1);border:1px solid #1B2431;border-radius:14px;transition:transform .18s,border-color .18s,box-shadow .18s}
.plan:hover{transform:translateY(-2px);border-color:#2A3A52;box-shadow:0 12px 30px rgba(0,0,0,.35)}
.plan-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.plan h3{font-size:15px;font-weight:700;letter-spacing:.01em;text-transform:uppercase;overflow-wrap:anywhere}
.chip{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 9px;border-radius:99px;font-size:12px;font-weight:600;white-space:nowrap;color:var(--mute);background:rgba(107,122,144,.14)}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}.chip.ok{color:var(--ok);background:var(--ok-t)}
.specs{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.82fr) minmax(0,1.1fr);gap:6px}
.specs>span{display:flex;align-items:center;justify-content:center;gap:3px;min-width:0;height:32px;padding:0 3px;border-radius:8px;background:var(--s2);border:1px solid #1E2836;font-size:12.5px;white-space:nowrap;overflow:hidden}
.specs .icon{width:14px;height:14px;color:var(--pri-tx)}.specs b{flex:none;font-weight:650;text-transform:uppercase}.specs em{min-width:0;overflow:hidden;text-overflow:clip;font-style:normal;color:var(--tx3);font-size:10.5px}
.gpu{font-size:13px;color:var(--tx2)}
.price{display:flex;align-items:baseline;gap:6px;margin-top:2px}.price b{font-size:26px;font-weight:700;letter-spacing:-.01em;font-variant-numeric:tabular-nums}.price span{color:var(--tx3);font-size:14px}
.price2{display:inline-flex;align-items:center;gap:6px;margin-top:-8px;font-size:13px;color:var(--tx3);font-variant-numeric:tabular-nums}
a.price2{color:var(--pri-tx);align-self:flex-start}.price2 .icon{width:14px;height:14px}
.cta{margin-top:auto;width:100%;height:42px}

/* ---- FAQ + chân trang ---- */
.faq .sec-title{margin-bottom:8px}
.faq details{border-top:1px solid var(--line)}.faq details:last-of-type{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 0;font-weight:600;cursor:pointer}
.faq summary::-webkit-details-marker{display:none}.faq summary .icon{color:var(--tx3);transition:transform .15s}.faq details[open] summary .icon{transform:rotate(45deg)}
.faq details p{padding:0 0 16px;color:var(--tx2);max-width:780px}
.faq-more{margin-top:14px;font-size:14px;color:var(--tx3)}
.site-footer{margin-top:56px;border-top:1px solid var(--line);padding:22px 0 40px;color:var(--tx3);font-size:13px}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:10px}.foot-links a,.site-footer p a{color:var(--tx3)}

/* ---- Khổ nhỏ ---- */
@media (max-width:1000px){.hero{grid-template-columns:minmax(0,1fr);grid-template-areas:"head" "art" "rack";padding:22px}.hero-art{max-width:760px}.rack{margin-right:0}.rk{border-right:1px solid #1C2636;border-radius:10px}.hero h1{font-size:34px}}
@media (max-width:860px){.plans{grid-template-columns:minmax(0,1fr)}.top-nav,.login-link{display:none}.mobile-nav{display:block}}
@media (max-width:767px){.wrap{padding:0 14px}.header-cta{padding:0 12px;min-height:34px;font-size:13px;white-space:nowrap}.hero{margin-top:14px;padding:16px;gap:14px;border-radius:14px}.hero h1{font-size:27px}
  .mh{padding:0 6px 6px;border-radius:10px}.mh-top{height:28px}.mh-top>i{width:7px;height:7px}.mh-url{height:18px;font-size:10px;margin-left:6px}.mh-live{font-size:9px;padding:3px 7px}.rack li{margin-left:0!important}.rack .rk-goi{display:none}
  .rk{height:36px;padding:0 12px;font-size:11.5px;gap:10px}.rk-led{gap:8px;margin-right:2%}.rk-led i{width:8px;height:8px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.mh-man video{display:none}.rk::after,.rk::before{display:none}}

/* 11/10: chuyển trang mượt — trình duyệt mờ dần trang cũ sang trang mới (Chrome/Edge 126+, Safari 18.2+; trình duyệt khác bỏ qua) */
@view-transition{navigation:auto}
::view-transition-old(root),::view-transition-new(root){animation-duration:.18s}
@media (prefers-reduced-motion:reduce){@view-transition{navigation:none}}