*{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:#09090B;--ink:#FAFAFA;--surface:#09090B;--accent:#DFE104;--accent-ink:#09090B;--muted:#A1A1AA;--line:#3F3F46;--radius:0;--button-radius:0;--heading:'Space Grotesk';--body:'Space Grotesk';--mono:'Space Grotesk'}
.wrap{width:90vw;max-width:none}body{font-size:22px}h1,h2,h3,.action,.label{text-transform:uppercase;letter-spacing:-.04em}.hero h1{font-size:clamp(48px,12vw,200px);line-height:1.12;max-width:100%;transform-origin:left top}.hero{padding:96px 0 128px}.hero .lead{max-width:36ch;margin-left:auto;font-size:24px}.accent{color:#DFE104}.marquee{overflow:hidden;background:#DFE104;color:#09090B;padding:24px 0}.track{display:flex;gap:64px;width:max-content;animation:marquee 24s linear infinite;font-size:clamp(32px,5vw,72px);font-weight:700;text-transform:uppercase}.track span{flex:none}.slow{background:transparent;color:#FAFAFA;border-block:2px solid #3F3F46}.slow .track{animation-duration:48s;font-size:32px}.stack{padding-top:64px}.stack article{position:sticky;top:32px;min-height:340px;background:#09090B;border:2px solid #3F3F46;padding:48px;margin-bottom:48px;display:grid;grid-template-columns:1fr 2fr;gap:48px;isolation:isolate}.stack article:hover,.card:hover{background:#DFE104;color:#09090B;border-color:#DFE104}.stack article:hover p,.card:hover p{color:#09090B}.stack h3{font-size:clamp(40px,5vw,72px)}.stack .big{font-size:160px;line-height:1;color:#27272A;position:absolute;right:24px;bottom:16px;z-index:-1}.stack article:hover .big{color:#b5b700}.card{border-width:2px}.card h3{font-size:32px}.action{min-height:56px}.action:hover{transform:scale(1.05)}.action:active{transform:scale(.95)}section{padding:128px 0}.final{background:#DFE104;color:#09090B}.final h2{font-size:clamp(48px,8vw,112px)}.final input{font-size:clamp(24px,4vw,48px);height:96px;background:transparent;border:0;border-bottom:2px solid #09090B;border-radius:0;color:#09090B}.final input::placeholder{color:#474800}.final .action{background:#09090B;color:#DFE104}.motion-control{background:transparent;color:inherit;border:2px solid currentColor;padding:12px 20px;min-height:48px}.paused .track{animation-play-state:paused}@keyframes marquee{to{transform:translateX(-50%)}}
@media(max-width:767px){section{padding:80px 0}.stack article{position:relative;top:auto;grid-template-columns:1fr;padding:24px;gap:24px;min-height:360px}.stack .big{font-size:128px}.hero .lead{font-size:20px;margin-left:0}.hero h1{font-size:clamp(48px,12vw,92px)}.track{gap:32px}}
@media(prefers-reduced-motion:reduce){.track{animation:none;width:auto;flex-wrap:wrap;gap:24px;padding-inline:16px}.track .duplicate{display:none}.stack article{position:relative;top:auto}}



/* Accessibility review */
.stack .big,.big{color:#82828d}.marquee:hover .track{animation-play-state:paused}