*{box-sizing:border-box}body{margin:0;font:18px/1.65 var(--body),sans-serif;background:var(--bg);color:var(--ink);--preview-accent:var(--accent);--preview-bg:var(--bg);--preview-ink:var(--ink)}
h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--heading),sans-serif;line-height:1.2}h1{font-size:clamp(44px,6vw,80px)}h2{font-size:clamp(32px,4vw,52px)}h3{font-size:24px}p{max-width:65ch;margin-top:16px}a{color:inherit}button,input{font:inherit}a,button{transition:transform .2s,background .2s,color .2s,box-shadow .2s}a:active,button:active{transform:translateY(1px)}
.wrap{width:min(1280px,calc(100% - 64px));margin:auto}.top{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 0}.top nav{display:flex;gap:24px}.top a{min-height:44px;display:inline-flex;align-items:center;text-decoration:none}.brand{font-weight:800;font-size:24px}.label{font:500 13px/1.6 var(--mono),monospace;letter-spacing:.16em;text-transform:uppercase;margin-bottom:24px;color:var(--accent)}
section{padding:96px 0}.split{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin-top:48px}.card{background:var(--surface);padding:32px;border:1px solid var(--line);border-radius:var(--radius);position:relative}.card p{color:var(--muted)}.action{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:56px;padding:16px 28px;margin-top:32px;background:var(--accent);color:var(--accent-ink);border:2px solid transparent;border-radius:var(--button-radius);font-weight:700;text-decoration:none}.secondary{background:transparent;border-color:var(--line);color:var(--ink)}.actions{display:flex;gap:16px;flex-wrap:wrap}.meta{font:14px/1.7 var(--mono),monospace;color:var(--muted)}.rule{border-top:1px solid var(--line)}.number{font:700 48px/1.2 var(--heading),sans-serif;display:block;margin-bottom:16px;color:var(--accent)}
details.faq{padding:24px 0;border-bottom:1px solid var(--line)}details.faq summary{font-size:22px;min-height:48px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px}details.faq summary::after{content:'+'}details.faq[open] summary::after{content:'−'}footer{padding:48px 0;border-top:1px solid var(--line)}.skip{position:absolute;top:-100px;left:16px;padding:16px;background:var(--accent);color:var(--accent-ink);z-index:10000}.tb-bao{padding:12px 24px;background:#101722;color:#edf2fa;font:13px/1.6 system-ui;display:flex;gap:16px;align-items:center;flex-wrap:wrap}.tb-bao span{flex:1}.tb-bao a{color:#d4e5ff}.tb-cta{padding:8px 16px;background:#38bdf8;color:#062032!important;border-radius:24px;text-decoration:none;font-weight:700}
input{width:100%;min-height:56px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:16px;margin-top:12px}label{display:block;margin-top:24px}.empty{padding:24px;border:1px dashed var(--line);margin-top:24px}.feature-icon{width:48px;height:48px;margin-bottom:24px;display:grid;place-items:center;color:var(--accent);border:1px solid var(--line)}.feature-icon svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.5}
@media(max-width:1023px){.split{grid-template-columns:1fr;gap:48px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.top nav{gap:16px}section{padding:80px 0}}
@media(max-width:639px){.wrap{width:calc(100% - 32px)}.grid{grid-template-columns:1fr;gap:24px}.top nav{display:none}section{padding:64px 0}.card{padding:24px}.action{width:100%}.actions{gap:0}.top{padding:16px 0}.tb-bao span{flex-basis:100%}}

:root{--bg:#030304;--ink:#FFFFFF;--surface:#0F1115;--accent:#F7931A;--accent-ink:#030304;--muted:#94A3B8;--line:#1E293B;--radius:16px;--button-radius:999px;--heading:'Space Grotesk';--body:'Inter';--mono:'JetBrains Mono'}
.hero{background:radial-gradient(ellipse at 75% 40%,#f7931a18,transparent 50%);position:relative}.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(#1e293b55 1px,transparent 1px),linear-gradient(90deg,#1e293b55 1px,transparent 1px);background-size:50px 50px;mask-image:radial-gradient(ellipse,#000,transparent 75%);pointer-events:none}.hero .wrap{position:relative}.gold{background:linear-gradient(90deg,#F7931A,#FFD600);background-clip:text;color:transparent}.orb{position:relative;aspect-ratio:1;max-width:450px;width:100%;margin:auto;display:grid;place-items:center;animation:float 8s ease-in-out infinite}.core{width:48%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 30% 25%,#FFD600,#F7931A 40%,#522706 78%);box-shadow:0 0 70px #f7931a66;display:grid;place-items:center;font:700 100px 'Space Grotesk';color:#4b2600}.ring{position:absolute;inset:8%;border:1px solid #F7931A;border-radius:50%;transform:rotateX(60deg);animation:orbit 10s linear infinite}.ring.two{inset:0;animation:orbit 15s linear infinite reverse}.float-card{position:absolute;left:0;bottom:10%;padding:16px;border:1px solid #ffffff33;background:#ffffff0d;backdrop-filter:blur(12px);border-radius:12px;font-family:var(--mono);box-shadow:0 0 30px #f7931a22}.float-card.right{left:auto;right:0;top:8%;bottom:auto;animation:float 4s ease-in-out infinite}.action{background:linear-gradient(90deg,#EA580C,#F7931A);box-shadow:0 0 20px -5px #f7931a88}.action:hover{transform:scale(1.04);box-shadow:0 0 30px #f7931a66}.secondary{background:transparent}.card{transition:.3s}.card:hover{transform:translateY(-4px);border-color:#F7931A;box-shadow:0 0 30px -10px #f7931a55}.feature-icon{border-radius:8px;background:#ea580c22;border-color:#ea580c77}.steps{margin-top:48px;border-left:2px solid #F7931A;padding-left:32px}.steps article{position:relative;padding:24px 0}.steps article::before{content:'';position:absolute;left:-42px;top:30px;width:16px;height:16px;border-radius:50%;background:#F7931A}.node::before,.node::after{content:'';position:absolute;width:16px;height:16px;border:1px solid #F7931A}.node::before{top:8px;left:8px;border-right:0;border-bottom:0}.node::after{bottom:8px;right:8px;border-top:0;border-left:0}.popular{border-color:#F7931A;transform:scale(1.05);box-shadow:0 0 40px -10px #f7931a44}.watermark{position:absolute;right:20px;top:12px;font-size:80px;color:#f7931a18;pointer-events:none}.card:hover .watermark{color:#f7931a33}.status::before{content:'';display:inline-block;width:8px;height:8px;border-radius:50%;background:#F7931A;margin-right:12px;animation:pulse 2s infinite}input{border:0;border-bottom:2px solid #1E293B;background:#0F1115;border-radius:0}input:focus{border-color:#F7931A;box-shadow:0 10px 20px -10px #f7931a66}
@keyframes orbit{to{transform:rotateZ(360deg) rotateX(60deg)}}@keyframes float{50%{transform:translateY(-16px)}}@keyframes pulse{50%{box-shadow:0 0 0 5px #f7931a22}}
@media(max-width:639px){.orb{max-width:300px}.core{font-size:64px}.float-card{font-size:12px}.popular{transform:none}}

/* Detail review */
h1,h2,h3{font-family:var(--heading),'Segoe UI',sans-serif}