:root{
  --ink:#202532;--ink-strong:#111521;--muted:#656c78;--muted-light:#858c97;
  --canvas:#f4f3ef;--surface:#fff;--surface-soft:#f8f8f6;--surface-tint:#f0f3fb;
  --line:#dcdfe4;--line-strong:#c8ccd4;--accent:#3159c7;--accent-dark:#24439b;
  --accent-soft:#e9eefc;--success:#22735e;--success-soft:#e8f4ef;--warning:#8a5a13;
  --danger:#a13d3a;--danger-soft:#faeceb;--radius:12px;
  --shadow:0 12px 30px rgba(27,31,43,.07);--header-height:64px;
  --content-max:1240px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{overflow-y:scroll;scrollbar-gutter:stable;scroll-behavior:smooth}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:Inter,"Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.6;text-rendering:optimizeLegibility}
button,input,select,textarea{font:inherit}
a{color:var(--accent)}
h1,h2,h3{color:var(--ink-strong);font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif}
.site-header{height:var(--header-height);display:flex;align-items:center;gap:24px;padding:0 clamp(18px,4vw,56px);border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);backdrop-filter:blur(14px);position:sticky;top:0;z-index:30}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-strong);font-size:15px;font-weight:750;text-decoration:none;white-space:nowrap}
.brand-mark{display:grid;place-items:center;width:32px;height:34px;border-radius:7px 10px 10px 7px;background:var(--ink-strong);box-shadow:inset 4px 0 0 #566075;color:#fff;font:700 16px/1 serif}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.site-nav a,.back-home{position:relative;padding:8px 10px;border-radius:7px;color:var(--muted);font-size:13px;text-decoration:none}
.language-switch{margin-left:0;padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:var(--accent);font-size:13px;font-weight:750;line-height:1;text-decoration:none;white-space:nowrap}.language-switch:hover,.language-switch:focus-visible{border-color:var(--accent);background:var(--surface-tint);outline:none}
.site-nav a:hover,.back-home:hover,.site-nav a[aria-current="page"]{background:var(--surface-tint);color:var(--accent-dark)}
.site-nav a[aria-current="page"]::after{content:"";position:absolute;left:10px;right:10px;bottom:-12px;height:2px;background:var(--accent)}
.service-state{margin-left:auto;color:var(--muted);font-size:12px}
.site-header .site-nav+.service-state{margin-left:0}
.user-logout{min-height:34px;margin-left:8px;padding:6px 10px;border-color:var(--line-strong);background:var(--surface);color:var(--ink);font-size:12px}.user-logout:hover{background:var(--surface-tint);color:var(--accent-dark)}
main{width:100%;max-width:var(--content-max);margin:0 auto;padding-left:28px;padding-right:28px}
.page-shell{max-width:var(--content-max);padding-top:30px;padding-bottom:52px}
.page-shell.wide{max-width:var(--content-max)}
.page-heading{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:24px;padding-bottom:22px;margin-bottom:22px;border-bottom:1px solid var(--line)}
.page-heading>div:first-child{min-width:0}
.page-heading h1{margin:2px 0 0;font-size:clamp(28px,3.2vw,38px);line-height:1.18;letter-spacing:-.028em}
.page-heading .lead{max-width:760px;margin:9px 0 0;color:var(--muted);font-size:14px}
.eyebrow{margin:0 0 7px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.context-note{display:flex;align-items:center;gap:7px;padding:7px 10px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--muted);font-size:12px;white-space:nowrap}
.context-note::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--success)}
.entry-panel,.task-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}
.entry-panel{padding:24px}.task-card{padding:20px}
.entry-panel h2,.task-card h2{margin:0;font-size:19px;line-height:1.35}
.entry-panel h3,.task-card h3{margin:0;font-size:16px}
.entry-panel p,.task-card p{margin:7px 0 0;color:var(--muted)}
.panel-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:20px}
.panel-heading p{max-width:620px}
.entry-actions,.button-row{display:flex;flex-wrap:wrap;align-items:center;gap:9px}
button,.button-link{min-height:40px;display:inline-flex;align-items:center;justify-content:center;padding:9px 15px;border:1px solid transparent;border-radius:8px;background:var(--accent);color:#fff;font-size:13px;font-weight:700;text-decoration:none;cursor:pointer;transition:transform .12s,background .12s,border-color .12s}
button:hover,.button-link:hover{background:var(--accent-dark)}
button:active,.button-link:active{transform:translateY(1px)}
button.secondary,.button-link.secondary{border-color:var(--line-strong);background:var(--surface);color:var(--ink)}
button.secondary:hover,.button-link.secondary:hover{border-color:#9aa3b4;background:var(--surface-soft)}
button.ghost,.button-link.ghost{background:transparent;color:var(--accent)}
button.danger{background:var(--danger)}
button.danger.secondary{border-color:#e7b9b6;background:var(--danger-soft);color:var(--danger)}
button:disabled{background:#e6e7e9;color:#92969d;cursor:not-allowed;transform:none}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 20px}
.form-grid .span-2{grid-column:1/-1}
.form-stack{display:grid;gap:18px}
.field{display:grid;gap:6px;color:var(--ink);font-size:13px;font-weight:700}
.field>span:first-child{display:flex;justify-content:space-between;gap:12px}
.field input,.field select,.field textarea,.entry-panel input,.entry-panel select,.entry-panel textarea{width:100%;padding:10px 12px;border:1px solid var(--line-strong);border-radius:8px;background:#fff;color:var(--ink);font-size:14px;font-weight:400;transition:border-color .15s,box-shadow .15s}
.field input,.field select,.entry-panel input,.entry-panel select{min-height:43px}
.field textarea,.entry-panel textarea{min-height:102px;resize:vertical;line-height:1.55}
.field input:focus,.field select:focus,.field textarea:focus,.entry-panel input:focus,.entry-panel select:focus,.entry-panel textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(49,89,199,.14)}
.field-help,.microcopy{margin:0;color:var(--muted);font-size:12px;font-weight:400;line-height:1.55}
.file-picker{position:relative;display:inline-flex;align-items:center;justify-content:center;width:max-content;min-height:40px;margin-top:8px;padding:0 14px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink-strong);font-size:14px;font-weight:700;cursor:pointer}.file-picker:hover,.file-picker:focus-within{border-color:var(--accent);background:var(--surface-tint)}.file-picker input[type="file"]{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}
.check{display:flex!important;align-items:flex-start!important;gap:9px!important;color:var(--ink)!important;font-size:13px!important;font-weight:500!important;line-height:1.55!important}
.check input{flex:0 0 auto;width:16px!important;height:16px!important;min-height:0!important;margin:3px 0 0;accent-color:var(--accent)}
.choice-heading{margin:0 0 9px;font-size:13px;font-weight:750}
.choice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.choice-grid.depths{grid-template-columns:repeat(4,minmax(0,1fr))}
.choice-card{min-height:92px;display:block;padding:13px 14px;border:1px solid var(--line-strong);border-radius:9px;background:var(--surface);color:var(--ink);text-align:left;font-weight:400}
.choice-card:hover{border-color:#98a7d6;background:var(--surface-tint);color:var(--ink);transform:none}
.choice-card.is-selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px var(--accent)}
.choice-card strong{display:block;margin-bottom:3px;color:var(--ink-strong);font-size:14px}
.choice-card span{display:block;color:var(--muted);font-size:11px;line-height:1.5}
.choice-card.is-selected strong{color:var(--accent-dark)}
.status-message{min-height:22px;margin:14px 0;color:var(--muted);font-size:13px}
.status-strip{position:relative;padding:11px 14px;border:1px solid var(--line);border-radius:8px;background:var(--surface-soft)}
.inspection-progress{display:grid;grid-template-columns:minmax(120px,1fr) auto;align-items:center;gap:12px;margin:14px 0 0}.inspection-progress[hidden]{display:none}.inspection-progress progress{width:100%;height:10px;accent-color:var(--blue)}.inspection-progress span{color:var(--muted);font-size:13px;white-space:nowrap}
.notice{padding:12px 14px;border-left:3px solid var(--accent);border-radius:0 7px 7px 0;background:var(--surface-tint);color:#34415c!important;font-size:12px!important}
.notice.warning{border-color:var(--warning);background:#fbf4e7;color:#72511d!important}
.details-card,.disclosure{border:1px solid var(--line);border-radius:9px;background:var(--surface-soft)}
.details-card summary,.disclosure summary{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:13px 15px;color:var(--ink);font-size:13px;font-weight:700;cursor:pointer;list-style:none}
.details-card summary::-webkit-details-marker,.disclosure summary::-webkit-details-marker{display:none}
.details-card summary::after,.disclosure summary::after{content:"＋";color:var(--muted);font-size:17px;font-weight:400}
.details-card[open] summary::after,.disclosure[open] summary::after{content:"−"}
.details-card>div,.disclosure>.disclosure-body{padding:0 15px 15px;color:var(--muted);font-size:13px}
.details-card ul{margin:6px 0;padding-left:18px}
.summary-list{display:grid;gap:9px;margin:0;padding:0;list-style:none}
.summary-list li{display:flex;gap:9px;color:var(--muted);font-size:12px}
.summary-list li::before{content:"✓";color:var(--success);font-weight:800}
.danger-zone{border-color:#efd0ce;background:#fffafa}
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

/* 首页 */
.home-main{max-width:var(--content-max)}
.hero{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(330px,.7fr);gap:clamp(40px,7vw,88px);align-items:center;min-height:0;padding-top:42px;padding-bottom:38px}
.hero-copy h1{max-width:650px;margin:0;font-size:clamp(40px,5vw,58px);line-height:1.12;letter-spacing:-.04em}
.hero-copy .lead{max-width:620px;margin:17px 0 0;color:var(--muted);font-size:16px}
.hero-copy .lead strong{color:var(--ink);font-weight:700}
.mobile-break{display:none}
.hero-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.hero-points span{padding:6px 10px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.65);color:var(--muted);font-size:12px}
.first-book-note{max-width:620px;margin:14px 0 0;color:var(--muted);font-size:13px;line-height:1.55}
.login-panel{padding:25px;border-top:4px solid var(--accent)}
.login-panel h2{font-size:21px}
.login-panel .entry-actions{margin-top:20px}
.login-panel button{width:100%}
.login-consent{margin-top:18px}.login-consent a{margin:0 2px}
.login-panel.is-qr-active{position:relative;display:flex;align-items:center;justify-content:center;height:var(--wechat-login-panel-height);min-height:0;overflow:hidden}.login-panel.is-qr-active>.eyebrow,.login-panel.is-qr-active>h2,.login-panel.is-qr-active>#entry-hint,.login-panel.is-qr-active .wechat-qr-heading,.login-panel.is-qr-active .wechat-qr-pane .microcopy{display:none}.wechat-qr-pane{display:grid;justify-items:center;gap:8px;width:var(--wechat-qr-width,216px);margin:0;padding:0;border:0;text-align:center}.wechat-qr-heading{margin:0!important;color:var(--ink)!important;font-size:14px;font-weight:750}.wechat-qr-login{display:grid;place-items:center;width:var(--wechat-qr-width,216px);min-width:var(--wechat-qr-width,216px);height:var(--wechat-qr-height,288px);min-height:var(--wechat-qr-height,288px);overflow:hidden;border-radius:8px;background:var(--surface-soft)}.wechat-qr-login iframe{display:block;width:300px!important;height:400px!important;max-width:none;border:0;transform:scale(var(--wechat-qr-scale,.72));transform-origin:top left}.wechat-qr-pane .microcopy{max-width:300px}.wechat-qr-back,.wechat-qr-fallback{width:auto!important;min-height:36px;padding:7px 12px}.login-panel.is-qr-active .wechat-qr-back{position:absolute;right:12px;bottom:9px;z-index:1;min-height:30px;padding:4px 9px;font-size:11px}.login-panel.is-qr-unavailable .wechat-qr-login{display:none}.login-panel.is-qr-unavailable{height:auto;overflow:visible}.login-panel.is-qr-unavailable .wechat-qr-pane{gap:14px;width:min(300px,100%)}.login-panel.is-qr-unavailable .wechat-qr-heading,.login-panel.is-qr-unavailable .wechat-qr-pane .microcopy{display:block}.login-panel.is-qr-unavailable .wechat-qr-back{position:static;min-height:36px;padding:7px 12px;font-size:13px}
.reading-path{padding:34px 0 36px;border-top:1px solid var(--line)}
.reading-path>.section-heading{margin-bottom:19px}
.reading-path h2,.privacy-note h2{margin:0;font-size:25px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.cards article{position:relative;min-height:150px;padding:21px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.cards article::before{content:"";position:absolute;top:0;left:22px;width:42px;height:3px;background:var(--accent)}
.cards span{color:var(--accent);font-size:11px;font-weight:800}
.cards h3{margin:26px 0 7px;font-size:18px}
.cards p,.privacy-note p{margin:0;color:var(--muted);font-size:14px}
.privacy-note{display:grid;grid-template-columns:minmax(220px,280px) minmax(0,1fr);gap:clamp(32px,4vw,64px);align-items:start;padding:32px 0 48px;border-top:1px solid var(--line)}
footer{display:flex;align-items:center;justify-content:center;gap:18px;padding:12px 24px;border-top:1px solid var(--line);color:var(--muted);font-size:12px;text-align:center}.footer-meta{white-space:nowrap}.footer-contact{display:flex;align-items:center;gap:8px;text-align:left}.footer-contact>span{max-width:68px;font-size:11px;line-height:1.35}.footer-contact figure{display:grid;gap:3px;justify-items:center;margin:0;color:var(--ink);font-size:10px;font-weight:700}.footer-contact img{display:block;width:clamp(82px,7.5vw,96px);height:auto;border:1px solid var(--line);border-radius:4px;background:#fff}.icp-record-link{color:inherit;text-decoration:none}.icp-record-link:hover,.icp-record-link:focus-visible{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.home-contact-rail{position:fixed;z-index:15;left:calc(50% + 636px);top:50%;display:grid;gap:8px;justify-items:center;transform:translateY(-50%);padding:10px;border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,.94);box-shadow:var(--shadow);text-align:center}.contact-rail-title{max-width:86px;color:var(--accent-dark);font-size:11px;font-weight:750;line-height:1.35;text-decoration:none}.home-contact-rail figure{display:grid;gap:3px;justify-items:center;margin:0;color:var(--ink);font-size:10px;font-weight:700}.home-contact-rail img{display:block;width:86px;height:86px;border:1px solid var(--line);border-radius:4px;background:#fff}.contact-page{display:grid;gap:24px}.contact-page article{max-width:760px}.contact-page article h2{margin:0 0 8px;font-size:24px}.contact-page article p{margin:0;color:var(--muted)}.contact-page-qrs{display:flex;flex-wrap:wrap;gap:20px}.contact-page-qrs figure{display:grid;gap:8px;justify-items:center;margin:0;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.contact-page-qrs img{display:block;width:clamp(156px,22vw,220px);height:auto}.contact-page-qrs figcaption{font-weight:750}
.legal-page{max-width:900px}.legal-copy{max-width:760px;color:var(--muted);font-size:14px}.legal-copy h2{margin:30px 0 8px;font-size:21px}.legal-copy p{margin:0 0 14px}

/* 英文首页以中文首屏密度为基准；版心保持相同，只收紧英文长文案的垂直节奏。 */
html[data-locale-route="en"] .hero{gap:clamp(28px,4vw,56px);padding-top:32px;padding-bottom:26px}
html[data-locale-route="en"] .hero-copy h1{font-size:clamp(38px,4.5vw,52px);line-height:1.08}
html[data-locale-route="en"] .hero-copy .lead{margin-top:13px;font-size:15px;line-height:1.52}
html[data-locale-route="en"] .hero-points{margin-top:20px}
html[data-locale-route="en"] .login-panel{padding:22px}
html[data-locale-route="en"] .login-panel .entry-actions{margin-top:16px}
html[data-locale-route="en"] .reading-path{padding:26px 0 28px}
html[data-locale-route="en"] .reading-path h2{font-size:23px}
html[data-locale-route="en"] .cards article{min-height:142px;padding:18px}
html[data-locale-route="en"] .cards h3{margin-top:22px;font-size:17px}
html[data-locale-route="en"] .cards p{font-size:13px;line-height:1.5}
html[data-locale-route="en"] .privacy-note{gap:24px;padding:24px 0 30px}
html[data-locale-route="en"] .privacy-note h2{font-size:23px}
html[data-locale-route="en"] .privacy-note p{font-size:13px;line-height:1.5}

/* 状态页 */
.status-actions{margin:0 0 22px}
.status-page{max-width:780px;min-height:0;padding-top:clamp(42px,7vw,72px);padding-bottom:48px}.status-page>h1{margin:0;font-size:clamp(34px,4.5vw,48px);line-height:1.14}.status-page>.lead{margin:12px 0 24px;color:var(--muted);font-size:15px}.status-panel{max-width:720px}.status-pill{display:inline-flex!important;padding:5px 9px;border-radius:999px;background:var(--success-soft);color:var(--success)!important;font-size:11px!important;font-weight:750!important}
.status-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin:18px 0 0;border:1px solid var(--line);background:var(--line)}
.status-grid>div{padding:13px;background:#fff}.status-grid dt{color:var(--muted);font-size:11px}.status-grid dd{margin:3px 0 0;font-size:14px;font-weight:650}

@media(min-width:901px) and (max-height:920px){
  .hero{padding-top:34px;padding-bottom:30px}
  .reading-path{padding:26px 0 28px}
  .privacy-note{padding:24px 0 36px}
}
@media(max-width:900px){
  .hero{grid-template-columns:1fr;min-height:auto;padding-top:46px}.login-panel{max-width:520px}.choice-grid.depths{grid-template-columns:repeat(2,1fr)}
}
/* 低于 1390px 时，右侧不足以容纳二维码轨道；改为正文后的横向卡片，避免遮挡内容。 */
@media(max-width:1389px){.home-contact-rail{position:static;grid-template-columns:auto repeat(2,auto);align-items:center;justify-content:center;transform:none;width:max-content;max-width:calc(100% - 32px);margin:0 auto 28px}.contact-rail-title{max-width:70px;text-align:left}}
/* 1390–1499px（含 Surface 200% 缩放且出现滚动条后的有效宽度）：
   保持 1240px 正文版心，仅将右侧二维码收紧为 64px 轨道；规则不依赖 DPR。 */
@media (min-width:1390px) and (max-width:1499px){.home-contact-rail{position:fixed;left:calc(50% + 630px);top:50%;display:grid;grid-template-columns:none;transform:translateY(-50%);width:auto;max-width:none;margin:0;padding:4px;gap:4px}.contact-rail-title{display:none}.home-contact-rail img{width:56px;height:56px}.home-contact-rail figure{gap:2px;font-size:9px}}
@media(max-width:680px){
  :root{--header-height:58px}.site-header{height:var(--header-height);padding:0 15px;gap:8px}.brand{font-size:13px}.brand-mark{width:29px;height:31px}.site-nav{display:none}.back-home{margin-left:auto;padding-right:0}.language-switch{margin-left:auto}.service-state{font-size:11px;text-align:right}
  main{padding-left:16px;padding-right:16px}.page-shell{padding-top:22px;padding-bottom:42px}.page-heading{grid-template-columns:1fr;gap:12px;padding-bottom:18px}.page-heading h1{font-size:28px}.context-note{width:max-content}
  footer{flex-wrap:wrap;gap:10px;padding:14px 16px}.footer-meta{width:100%;white-space:normal}.home-contact-rail{gap:7px;margin-bottom:20px;padding:8px}.home-contact-rail img{width:76px;height:76px}.contact-page-qrs{gap:12px}.contact-page-qrs figure{padding:12px}.entry-panel,.task-card{padding:18px}.form-grid,.choice-grid,.cards,.privacy-note,.status-grid{grid-template-columns:1fr}.form-grid .span-2{grid-column:auto}.choice-grid.depths{grid-template-columns:1fr 1fr}.choice-card{min-height:82px}.button-row>*{flex:1}.panel-heading{display:grid;gap:12px}
  .hero{padding-top:32px;padding-bottom:34px;gap:24px}.hero-copy h1{font-size:36px}.mobile-break{display:block}.hero-copy .lead{font-size:15px}.reading-path{padding:28px 0}.cards article{min-height:0}.privacy-note{gap:10px;padding:26px 0 38px}.login-panel{min-height:0}.login-panel.is-qr-active{height:var(--wechat-login-panel-height)}.wechat-qr-login{width:var(--wechat-qr-width,216px);min-width:var(--wechat-qr-width,216px);height:var(--wechat-qr-height,288px);min-height:var(--wechat-qr-height,288px)}.wechat-qr-login iframe{width:300px!important}
}