:root{--ink:#1d1d1f;--mute:#6e6e73;--bg:#fff;--gray:#f5f5f7;--line:#d2d2d7;--accent:#0071e3;--r:22px}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);line-height:1.5;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
.wrap{max-width:1000px;margin:0 auto;padding:0 22px}
header{position:sticky;top:0;z-index:9;background:rgba(251,251,253,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:.5px solid rgba(0,0,0,.08)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:48px}
.logo{font-weight:600;font-size:17px}.logo span{color:var(--mute);font-weight:400}
nav a{margin-left:20px;font-size:12px;color:var(--ink);opacity:.8}nav a.on{opacity:1;font-weight:600}
.hero{padding:96px 0 80px;text-align:center}
.hero h1{font-size:44px;line-height:1.08;font-weight:700;letter-spacing:-.03em;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--mute)}
.hero p{color:var(--mute);font-size:17px;max-width:560px;margin:0 auto 32px}
.btn{display:inline-block;padding:11px 22px;border-radius:980px;background:var(--accent);color:#fff;font-weight:500;border:0;font-size:16px;cursor:pointer;font-family:inherit}
.btn:hover{background:#0077ed}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn.sm{padding:7px 15px;font-size:14px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:56px auto 0;max-width:600px}
.steps div{font-size:13px;color:var(--mute)}.steps b{display:block;font-size:28px;font-weight:600;color:var(--ink)}
h2{font-size:32px;font-weight:700;letter-spacing:-.025em;margin:90px 0 28px;text-align:center}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.cat{background:var(--gray);border-radius:var(--r);padding:26px 20px;text-align:center;transition:transform .4s}
.cat:hover{transform:scale(1.02)}
.cat .ic{font-size:34px}.cat h3{font-size:19px;font-weight:600;margin:10px 0 4px}
.price{font-weight:600;font-size:17px}.tag{font-size:11px;color:var(--mute);margin-left:5px;font-weight:400}
.cat small{display:block;color:var(--mute);font-size:12px;margin:2px 0 16px}
.cases{display:grid;gap:14px}
.case{border-radius:var(--r);overflow:hidden;background:var(--gray)}
.case .cover{min-height:300px;display:flex;align-items:center;justify-content:center;flex-direction:column;font-weight:700;font-size:30px;letter-spacing:-.02em;text-align:center;padding:30px}
.case .cover small{font-size:15px;font-weight:400;margin-top:8px;opacity:.75}
.case.dark .cover{background:#000;color:#f5f5f7}
.case .body{padding:18px 24px;display:flex;justify-content:space-between;align-items:center;gap:10px;background:#fff;border:1px solid var(--gray);border-top:0;border-radius:0 0 var(--r) var(--r)}
.case .body p{font-size:14px;color:var(--mute)}
.wip .cover{color:#86868b}
.card{background:var(--gray);border-radius:var(--r);padding:28px 22px;margin-bottom:18px}
.card h2{text-align:left;margin:0 0 6px;font-size:28px}
label{display:block;font-size:14px;font-weight:600;margin:18px 0 8px}
input,select,textarea{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;font-size:16px;font-family:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 4px rgba(0,113,227,.15)}
.chips{display:flex;flex-wrap:wrap;gap:8px}.chips label{margin:0;font-weight:400;padding:8px 16px;border:1px solid var(--line);border-radius:980px;font-size:14px;cursor:pointer;background:#fff}
.chips input{display:none}.chips label:has(input:checked){border-color:var(--ink);background:var(--ink);color:#fff}
.qr{width:200px;height:200px;margin:18px auto;border:1px dashed var(--line);background:#fff;border-radius:18px;display:flex;align-items:center;justify-content:center;color:var(--mute);font-size:13px;text-align:center}
.amt{font-size:48px;font-weight:700;letter-spacing:-.03em;text-align:center}
.note{font-size:12px;color:var(--mute);background:#fff;border-radius:12px;padding:12px 14px;margin-top:14px}
.oid{font-family:"SF Mono",Menlo,monospace;background:#fff;padding:2px 8px;border-radius:6px;font-weight:600}
.hide{display:none}
.status{display:inline-block;padding:3px 10px;border-radius:980px;font-size:12px;background:var(--ink);color:#fff}
footer{text-align:center;color:var(--mute);font-size:12px;padding:70px 0 40px;margin-top:80px;background:var(--gray)}
.fade{opacity:0;transform:translateY(28px);transition:opacity .9s ease,transform .9s ease}.fade.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.fade{opacity:1;transform:none;transition:none}}
@media(min-width:720px){.hero{padding:140px 0 110px}.hero h1{font-size:72px}.hero p{font-size:21px}h2{font-size:48px}.grid{grid-template-columns:repeat(3,1fr)}.cases{grid-template-columns:repeat(2,1fr)}.cases .case:first-child{grid-column:1/-1}.case .cover{min-height:380px;font-size:40px}}
.tiers{display:grid;gap:14px}
.tier{position:relative;background:var(--gray);border-radius:var(--r);padding:28px 22px}
.tier h3{font-size:21px;font-weight:600}.tier .tp{font-size:36px;font-weight:700;letter-spacing:-.03em;margin:4px 0 8px}
.tier p{color:var(--mute);font-size:14px;margin-bottom:18px;min-height:42px}
.tier.hot{background:#fff;border:1.5px solid var(--ink)}
.badge{position:absolute;top:18px;right:18px;font-size:11px;background:var(--ink);color:#fff;padding:3px 10px;border-radius:980px}
.tier.flag{background:#000;color:#f5f5f7}.tier.flag p{color:#a1a1a6}
.wxbox{margin-top:18px;text-align:center}.wxbox p{margin:6px 0 2px;color:#f5f5f7}.wxbox small{color:#a1a1a6}
.qr.sm{width:150px;height:150px;margin:0 auto 10px;background:#1d1d1f;border-color:#424245;color:#86868b}
.case .body span{display:flex;gap:8px;flex-shrink:0}
.c-stars .cover{background:radial-gradient(ellipse at 50% 120%,#1b2a5a,#05060f 70%);color:#fff}
.c-env .cover{background:linear-gradient(160deg,#f3ece2,#e6d8c3);color:#5a4632}
.c-prank .cover{background:#0b0b0d;color:#ff453a;font-family:"SF Mono",Menlo,monospace}
.tierpick{display:grid;gap:8px}.tierpick label{margin:0;font-weight:400;display:flex;justify-content:space-between;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;font-size:14px}
.tierpick input{display:none}.tierpick label:has(input:checked){border-color:var(--ink);box-shadow:0 0 0 1px var(--ink)}
.tierpick b{white-space:nowrap}
@media(min-width:720px){.tiers{grid-template-columns:repeat(2,1fr)}.tier.flag{grid-column:1/-1}}
@media(min-width:980px){.tiers{grid-template-columns:repeat(4,1fr)}}
.c-letter .cover{background:linear-gradient(180deg,#0b1a33,#2c4468 60%,#e9c9c4);color:#fdf3ea}

.paytabs{display:inline-flex;background:rgba(118,118,128,.12);border-radius:10px;padding:3px;margin:16px auto 4px}
.paytabs button{border:0;background:transparent;font:inherit;font-size:14px;padding:7px 22px;border-radius:8px;color:#1d1d1f;cursor:pointer;transition:all .2s}
.paytabs button.on{background:#fff;box-shadow:0 3px 8px rgba(0,0,0,.12);font-weight:600}
.payqr{margin:14px auto;max-width:300px;width:82%}
.payqr img{width:100%;display:block;border-radius:18px;box-shadow:0 8px 30px rgba(0,0,0,.10);-webkit-touch-callout:default;user-select:auto}
.paynote{font-size:15px;margin:10px 0 4px}.paynote b{color:#bf4800}
.paytip{font-size:12px;color:var(--mute);margin:0 0 16px;line-height:1.6}
.wxqr{display:block;width:200px;max-width:70%;margin:12px auto 6px;border-radius:14px;background:#fff;-webkit-touch-callout:default}

.cpbtn{border:0;background:rgba(0,113,227,.1);color:#0071e3;font:inherit;font-size:13px;padding:4px 12px;border-radius:999px;cursor:pointer;margin-left:4px}
.vh{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.upbox{display:flex;flex-direction:column;align-items:center;gap:6px;border:2px dashed #0071e3;background:rgba(0,113,227,.06);border-radius:18px;padding:22px 14px;margin:18px 0 6px;cursor:pointer;text-align:center}
.upbox b{font-size:17px;color:#0071e3}.upbox small{color:var(--mute);font-size:12px}.upic{width:44px;height:44px;border-radius:50%;background:#0071e3;color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px}
.upbox.done{border-style:solid;border-color:#34c759;background:rgba(52,199,89,.08)}.upbox.done b{color:#248a3d}.upbox.done .upic{background:#34c759}
#upprev{max-width:120px;max-height:160px;border-radius:10px;margin-top:6px}
.pmask{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.45);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:flex-end;justify-content:center;animation:pf .25s}
.psheet{background:#fff;width:100%;max-width:440px;border-radius:24px 24px 0 0;padding:24px 20px calc(20px + env(safe-area-inset-bottom));text-align:left;animation:pu .3s cubic-bezier(.2,.8,.2,1);max-height:92vh;overflow:auto}
@media(min-width:600px){.pmask{align-items:center}.psheet{border-radius:24px}}
.psheet h3{margin:0 0 16px;font-size:21px;text-align:center}
.pstep{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid #f0f0f2;font-size:15px;line-height:1.5}.pstep:last-of-type{border:0}
.pstep i{flex:none;width:26px;height:26px;border-radius:50%;background:#1d1d1f;color:#fff;font-style:normal;font-size:13px;display:flex;align-items:center;justify-content:center;margin-top:1px}
.pstep>div{flex:1}.pstep small{display:block;color:var(--mute);font-size:12px}
.pbig{font-size:28px;font-weight:700;color:#bf4800;margin:4px 0;letter-spacing:.5px}.pbig.mono{font-size:22px;color:#1d1d1f;font-family:ui-monospace,Menlo,monospace}
.pcopy{width:100%;margin-top:6px}.pok{width:100%;margin-top:16px;background:#1d1d1f}
@keyframes pf{from{opacity:0}}@keyframes pu{from{transform:translateY(40px);opacity:0}}
.toast{position:fixed;left:50%;top:40%;transform:translate(-50%,-50%) scale(.9);background:rgba(29,29,31,.88);color:#fff;padding:12px 20px;border-radius:14px;font-size:15px;z-index:200;opacity:0;pointer-events:none;transition:all .2s}.toast.on{opacity:1;transform:translate(-50%,-50%) scale(1)}
.pmask.hide,#upprev.hide{display:none}

.policy{margin:20px 0 14px;padding:14px 16px;border-radius:14px;background:rgba(255,149,0,.08);border:1px solid rgba(255,149,0,.25);font-size:13px;line-height:1.7}.policy p{margin:4px 0 10px;color:#5c4a2e}
.policy .agree{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;margin:0;cursor:pointer}.policy .agree input{width:20px;height:20px;margin:0;accent-color:#0071e3}
.policy.shake{animation:shk .5s}@keyframes shk{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}
.revbox{margin-top:22px;padding:18px 16px;border-radius:18px;background:rgba(0,113,227,.05);border:1px solid rgba(0,113,227,.15);text-align:left}.revbox h3{margin:0 0 4px;font-size:18px}.revc{font-size:14px;color:var(--mute);margin:0 0 10px}.revc b{color:#0071e3;font-size:18px}.revbox textarea{width:100%;box-sizing:border-box}
.faq{max-width:720px;margin:0 auto;padding:40px 20px}.faq h2{text-align:center}.faq details{background:var(--card,#fff);border-radius:14px;padding:14px 18px;margin:10px 0;box-shadow:0 2px 12px rgba(0,0,0,.04)}.faq summary{font-weight:600;cursor:pointer}.faq p{font-size:14px;line-height:1.8;color:var(--mute);margin:8px 0 0}