:root{
  --bg:#fafaf8; --surface:#fff; --ink:#15171a; --muted:#5d6166; --faint:#9a9ea3; --line:#e8e8e4; --soft:#f3f3f0;
  --brand:#d9362b; --brand-soft:#fcecea; --good:#1a7f45; --fair:#d97706; --poor:#d0342c;
  --fair-soft:#fdf2e3; --poor-soft:#fcebea;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#121314; --surface:#1b1c1e; --ink:#eceef0; --muted:#a4a8ad; --faint:#72767b; --line:#2b2d30; --soft:#232427;
  --brand:#ff6259; --brand-soft:#351c1a; --good:#4cc47f; --fair:#f0a33a; --poor:#ff6b62; --fair-soft:#33260f; --poor-soft:#361b19; } }
:root[data-theme="dark"]{
  --bg:#121314; --surface:#1b1c1e; --ink:#eceef0; --muted:#a4a8ad; --faint:#72767b; --line:#2b2d30; --soft:#232427;
  --brand:#ff6259; --brand-soft:#351c1a; --good:#4cc47f; --fair:#f0a33a; --poor:#ff6b62; --fair-soft:#33260f; --poor-soft:#361b19; }
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.in{max-width:1040px;margin:0 auto;padding:0 20px}
.narrow{max-width:640px}
.muted{color:var(--muted)} .center{text-align:center}
b.hl{color:var(--brand)}

/* 导航 */
.nav{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .in{display:flex;justify-content:space-between;align-items:center;height:56px}
.logo{font-weight:800;font-size:18px;letter-spacing:.02em}
.logo i{font-style:normal;color:var(--brand)}
.nav nav{display:flex;gap:20px;align-items:center;font-size:14px;color:var(--muted)}
.nav .pill{color:var(--ink);border:1px solid var(--line);border-radius:99px;padding:5px 14px;background:var(--surface)}
@media (max-width:560px){ .nav nav a:not(.pill){display:none} }

/* 按钮 */
.btn{display:inline-block;background:var(--brand);color:#fff;font-weight:600;font-size:16px;padding:13px 24px;border-radius:12px;border:1px solid var(--brand)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn:hover{filter:brightness(1.05)}

/* 首屏 */
.hero{padding:56px 0 40px}
.hero .in{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.kicker{font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em}
.hero h1{font-size:44px;line-height:1.2;margin:10px 0 16px;letter-spacing:-.01em}
.lead{font-size:17px;color:var(--muted);margin:0 0 26px;max-width:520px}
.lead b{color:var(--ink);font-weight:600}
.ctas{display:flex;gap:12px;flex-wrap:wrap}
.fine{font-size:13px;color:var(--faint);margin-top:14px}
.mock{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:0 20px 50px -30px rgba(0,0,0,.25);font-size:14px}
.mock-top{display:flex;justify-content:space-between;align-items:baseline}
.mock-top b{font-size:17px} .mock-top span{font-size:12px;color:var(--faint)}
.mock-score{display:flex;gap:14px;align-items:center;margin:14px 0 8px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.ring{width:76px;height:76px;border-radius:50%;flex:none;display:grid;place-items:center;background:conic-gradient(var(--poor) 37%,var(--soft) 0)}
.ring > div{width:62px;height:62px;border-radius:50%;background:var(--surface);display:grid;place-items:center;text-align:center;line-height:1}
.ring b{font-size:24px} .ring small{display:block;font-size:9px;color:var(--faint);margin-top:3px}
.mock-score p{margin:6px 0 0;font-weight:600;line-height:1.5}
.tag{font-size:11px;font-weight:600;padding:2px 8px;border-radius:99px}
.tag.poor{background:var(--poor-soft);color:var(--poor)}
.mock-dim{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.mock-dim:last-child{border-bottom:0}
.mock-dim span{display:flex;align-items:center;gap:8px;font-weight:600}
.mock-dim em{font-style:normal;color:var(--muted);font-size:13px}
.d{width:8px;height:8px;border-radius:50%;display:inline-block}
.d.poor{background:var(--poor)} .d.fair{background:var(--fair)}
@media (max-width:820px){
  .hero{padding:32px 0 24px}
  .hero .in{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:32px}
  .lead{font-size:16px}
}

/* 数据条 */
.band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface)}
.stats{display:grid;grid-template-columns:repeat(3,1fr) auto;gap:16px;align-items:center;padding-top:22px;padding-bottom:22px}
.stats b{display:block;font-size:30px;font-variant-numeric:tabular-nums;line-height:1.2}
.stats span{font-size:13px;color:var(--muted)}
.stats .note{font-size:12px;color:var(--faint)}
@media (max-width:560px){ .stats{grid-template-columns:repeat(3,1fr)} .stats .note{grid-column:1/-1} .stats b{font-size:24px} }

/* 通用区块 */
.block{padding:64px 0 8px}
.label{font-size:12px;font-weight:600;color:var(--faint);letter-spacing:.08em}
.block h2{font-size:30px;line-height:1.35;margin:8px 0 26px;letter-spacing:-.01em}
.block h2 em{font-style:normal;color:var(--brand)}
.h1s{font-size:28px;margin:8px 0 24px}
@media (max-width:560px){ .block{padding:44px 0 4px} .block h2{font-size:23px} }

.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}
.compare div{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px}
.compare span{font-weight:600;display:block}
.compare b{font-size:26px;display:block;margin-top:6px}
.compare small{display:block;font-size:13px;color:var(--muted)}
.compare i{display:inline-block;font-style:normal;font-size:12px;color:var(--faint);background:var(--soft);border-radius:6px;padding:1px 8px;margin-top:10px}
@media (max-width:560px){ .compare{grid-template-columns:1fr} .compare div{display:grid;grid-template-columns:1fr auto;align-items:center} .compare b{grid-row:span 2;font-size:22px;margin:0} .compare i{grid-column:1} }

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px}
.card .no{font-size:12px;font-weight:700;color:var(--brand)}
.card h3{font-size:18px;margin:6px 0 8px}
.card p{margin:0;color:var(--muted);font-size:15px}
@media (max-width:820px){ .cards{grid-template-columns:1fr} }

ol.steps{list-style:none;margin:0;padding:0;counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
ol.steps li{counter-increment:s;padding:20px;border-top:2px solid var(--ink)}
ol.steps li::before{content:"0" counter(s);font-size:13px;font-weight:700;color:var(--brand);display:block;margin-bottom:6px}
ol.steps b{display:block;font-size:17px}
ol.steps span{color:var(--muted);font-size:15px}
@media (max-width:820px){ ol.steps{grid-template-columns:1fr} ol.steps li{padding:14px 0} }

.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:start}
.price{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px}
.price.hot{border:1.5px solid var(--ink)}
.price h3{margin:0;font-size:16px;color:var(--muted);font-weight:600}
.price > b{display:block;font-size:34px;margin:4px 0 12px}
.price > b small{font-size:14px;color:var(--faint);font-weight:500}
.price ul{list-style:none;margin:0 0 20px;padding:0;font-size:15px}
.price li{padding:5px 0;border-top:1px dashed var(--line)}
.price li:first-child{border-top:0}
.price li::before{content:"✓ ";color:var(--good);font-weight:700}
.price .btn{width:100%;text-align:center}
.badge{position:absolute;top:-11px;right:18px;background:var(--ink);color:var(--surface);font-size:12px;font-weight:600;padding:2px 10px;border-radius:99px}
.soon{display:block;text-align:center;font-size:14px;color:var(--faint);padding:12px;border:1px dashed var(--line);border-radius:12px}
@media (max-width:820px){ .prices{grid-template-columns:1fr} }

details{border-bottom:1px solid var(--line);padding:4px 0}
details summary{cursor:pointer;list-style:none;padding:14px 0;font-weight:600;display:flex;justify-content:space-between}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";color:var(--faint);font-weight:400}
details[open] summary::after{content:"−"}
details p{margin:0 0 16px;color:var(--muted)}

.final{padding:72px 0;text-align:center}
.final h2{font-size:28px;margin:0 0 20px}
footer{border-top:1px solid var(--line);padding:24px 0 40px;font-size:13px;color:var(--faint)}

/* 购买页 */
.step-card{display:grid;grid-template-columns:36px 1fr;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;margin-bottom:14px}
.step-card .no{width:30px;height:30px;border-radius:50%;background:var(--ink);color:var(--surface);display:grid;place-items:center;font-weight:700}
.step-card h3{margin:2px 0 6px;font-size:18px}
.step-card p{margin:0 0 8px}
.step-card ul{margin:0 0 8px;padding-left:18px;color:var(--muted)}
.qr{width:180px;height:180px;border:1px dashed var(--line);border-radius:14px;display:grid;place-items:center;color:var(--faint);margin:12px 0;background:var(--soft)}
.qr img{width:100%;height:100%;object-fit:contain;border-radius:14px}

/* ---------- v2 首页：单页自助 ---------- */
body.home{background:var(--bg)}
.start{padding:48px 0 12px}
.start .kicker{margin:0}
.start h1{font-size:34px;line-height:1.25;margin:10px 0 12px;letter-spacing:-.01em}
.start .sub{color:var(--muted);margin:0 0 22px}
@media (max-width:560px){ .start{padding:28px 0 4px} .start h1{font-size:27px} }
.start-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px;display:grid;gap:14px;box-shadow:0 18px 40px -32px rgba(0,0,0,.35)}
.start-card label{display:grid;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}
.start-card input:not([type=radio]),.start-card textarea{font:inherit;font-size:16px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px;width:100%;outline:none;transition:border-color .15s}
.start-card input:focus,.start-card textarea:focus{border-color:var(--ink);background:var(--surface)}
.start-card textarea{resize:vertical;min-height:70px}
.start-card .grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:-6px}
.chips button{font:inherit;font-size:13px;color:var(--muted);background:transparent;border:1px solid var(--line);border-radius:99px;padding:3px 11px;cursor:pointer}
.chips button:hover{color:var(--ink);border-color:var(--ink)}
.seg{display:grid;grid-template-columns:1fr 1fr;background:var(--soft);border-radius:12px;padding:4px;gap:4px}
.seg label{display:block;cursor:pointer}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:block;text-align:center;font-size:14px;font-weight:600;color:var(--muted);padding:9px 6px;border-radius:9px}
.seg input:checked + span{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.btn.big{width:100%;text-align:center;font-size:17px;padding:15px;border-radius:14px;cursor:pointer}
.btn[disabled]{opacity:.6;cursor:default}
.start-card .fine{margin:-4px 0 0;text-align:center}
.form-err{margin:0;padding:10px 12px;border-radius:10px;background:var(--poor-soft);color:var(--poor);font-size:14px}

.sample{display:grid;grid-template-columns:220px 1fr;gap:28px;align-items:center}
.sample img{width:100%;height:auto;border-radius:18px;border:1px solid var(--line);box-shadow:0 20px 40px -30px rgba(0,0,0,.4)}
.sample h2{margin:4px 0 10px}
.sample .more{display:inline-block;margin-top:10px;font-weight:600;color:var(--brand)}
@media (max-width:560px){ .sample{grid-template-columns:1fr} .sample img{max-width:260px;margin:0 auto} }

ul.rows{list-style:none;margin:10px 0 0;padding:0;border-top:1px solid var(--line)}
ul.rows li{display:grid;grid-template-columns:1fr;gap:2px;padding:14px 0;border-bottom:1px solid var(--line)}
ul.rows li span{color:var(--muted);font-size:15px}
ul.price-rows li{grid-template-columns:1fr auto;align-items:center;column-gap:16px}
ul.price-rows li em{grid-column:1;font-style:normal;color:var(--muted);font-size:14px}
ul.price-rows li span{grid-column:2;grid-row:1 / span 2;color:var(--ink);font-weight:700;font-size:18px}
.small{font-size:13px;margin-top:10px}
.home .block{padding:44px 0 4px}
.home .block h2{font-size:22px}

/* ---------- 生成中 ---------- */
.wait{min-height:70vh;display:grid;place-items:center;padding:24px 16px}
.wait-card{max-width:440px;width:100%;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px 22px}
.wait-card h1{font-size:22px;margin:6px 0 8px}
.wait-card p{margin:0 0 16px}
ol.progress{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
ol.progress li{position:relative;padding:11px 0 11px 28px;border-bottom:1px solid var(--line);color:var(--faint);font-size:15px}
ol.progress li::before{content:"";position:absolute;left:4px;top:17px;width:10px;height:10px;border-radius:50%;border:2px solid var(--line)}
ol.progress li.done{color:var(--muted)}
ol.progress li.done::before{background:var(--good);border-color:var(--good)}
ol.progress li.now{color:var(--ink);font-weight:600}
ol.progress li.now::before{border-color:var(--brand);animation:pulse 1.2s ease-in-out infinite}
@keyframes pulse{50%{background:var(--brand)}}
.start-card [hidden]{display:none !important}
.start-card input:not([type=radio]),.start-card textarea{font-weight:400}
.start-card ::placeholder{color:var(--faint);opacity:1}