*{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:#0A0A0F;--ink:#FAFAFA;--surface:#1a1a2499;--accent:#F59E0B;--accent-ink:#0A0A0F;--muted:#a1a1aa;--line:#ffffff14;--radius:12px;--button-radius:12px;--heading:'Space Grotesk';--body:'Inter';--mono:'JetBrains Mono'}
.wrap{max-width:1152px}body{isolation:isolate}.ambience{position:fixed;inset:0;pointer-events:none;z-index:-1;overflow:hidden}.ambience::before,.ambience::after{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:#F59E0B;filter:blur(120px);opacity:.035;top:-200px;left:calc(50% - 300px)}.ambience::after{top:auto;bottom:-200px;left:auto;right:-100px}.hero{text-align:center;padding:144px 0}.hero h1{font-size:clamp(44px,6.4vw,88px);letter-spacing:-.025em}.hero p{margin:24px auto}.badge{display:inline-flex;align-items:center;padding:8px 16px;border:1px solid #f59e0b33;border-radius:999px;font:13px 'JetBrains Mono';box-shadow:0 0 20px #f59e0b26;margin-bottom:32px}.badge::before{content:'';width:6px;height:6px;border-radius:50%;background:#F59E0B;margin-right:12px;animation:ember 3s infinite}.player{max-width:720px;margin:64px auto 0;padding:32px;background:#12121A;border:1px solid #ffffff14;border-radius:16px;text-align:left;box-shadow:0 20px 25px #0006}.player-top{display:flex;justify-content:space-between;gap:16px}.wave{height:88px;display:flex;align-items:center;justify-content:center;gap:6px;margin-top:24px}.wave i{height:var(--h);width:4px;background:#F59E0B;border-radius:8px;opacity:.7}.track-row{display:flex;align-items:center;justify-content:space-between;padding:24px 0;border-bottom:1px solid #ffffff14;gap:24px}.track-row .action{margin:0}.card{backdrop-filter:blur(8px);transition:transform .3s ease-out,background .3s,box-shadow .3s}.card:hover{background:#1a1a24cc;transform:scale(1.02);border-color:#ffffff26;box-shadow:0 10px 15px #0005}.action:hover{box-shadow:0 0 20px #f59e0b66;filter:brightness(1.1)}.action:active{transform:scale(.98)}section{padding:128px 0}.note{padding-left:32px;border-left:1px solid #F59E0B;box-shadow:-8px 0 20px -15px #F59E0B}.input-glass{background:#1a1a2499;backdrop-filter:blur(8px);border-radius:12px}input:focus{border-color:#F59E0B;box-shadow:0 0 20px #f59e0b22}@keyframes ember{50%{opacity:.5;box-shadow:0 0 12px #F59E0B}}
@media(max-width:639px){section,.hero{padding:96px 0}.player{padding:24px}.track-row{align-items:flex-start;flex-direction:column}.track-row .action{width:auto}.ambience::before,.ambience::after{width:400px;height:400px}}

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