:root{--paper:#FFF8F2;--white:#FFFFFF;--soft:#F3EBE3;--ink:#1A1230;--body:#2C2440;--muted:#5A5270;--faint:#8A8298;--pink:#E11D8F;--indigo:#6366F1;--cyan:#0891B2;--amber:#D97706;--mint:#059669;--line:rgba(26,18,48,.10);--shadow:0 14px 34px rgba(26,18,48,.08);--radius:20px;--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75;overflow-x:hidden}body.layer-open{overflow:hidden}
a{color:inherit;text-decoration:none}button,input{font:inherit}img{max-width:100%;height:auto;display:block}button,a{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(225,29,143,.28);outline-offset:3px}
.masthead{position:fixed;top:0;left:0;right:0;height:72px;background:rgba(255,248,242,.96);backdrop-filter:blur(12px);z-index:50;border-bottom:1px solid var(--line)}
.masthead-inner{max-width:var(--max);height:100%;margin:0 auto;padding:0 18px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.icon-button{min-width:44px;min-height:44px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:14px;cursor:pointer}.menu-button{justify-self:start}
.brand-mark{justify-self:center;min-height:44px;display:flex;align-items:center;justify-content:center;font-weight:900;letter-spacing:.08em;color:var(--ink)}.brand-mark img{height:38px;width:auto}.mast-actions{justify-self:end;display:flex;align-items:center;gap:8px}
.app-link,.primary-btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%);color:#fff;font-weight:800;box-shadow:var(--shadow)}
.secondary-btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:999px;background:#fff;color:var(--ink);font-weight:800;border:1px solid var(--line)}
.section-strip{position:fixed;top:72px;left:0;right:0;height:46px;background:#fff;border-bottom:1px solid var(--line);z-index:45}.section-strip-inner{height:100%;max-width:760px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:0 16px}.section-strip a{height:46px;display:flex;align-items:center;position:relative;font-size:15px;color:var(--muted)}.section-strip a.active{color:var(--ink);font-weight:800}.section-strip a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--pink);border-radius:3px}
.site-main{max-width:var(--max);margin:0 auto;padding:150px 18px 80px}.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.85fr);gap:36px;align-items:center;margin-bottom:46px}.eyebrow{font-size:13px;letter-spacing:.22em;font-weight:900;color:var(--pink);text-transform:uppercase}.hero h1,.page-head h1{margin:.2em 0 .35em;color:var(--ink);font-size:clamp(28px,4vw,34px);line-height:1.25}.hero p,.page-head p{font-size:16px;color:var(--muted)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.media-slot{background:linear-gradient(135deg,#fff,#f3ebe3);border:1px solid var(--line);border-radius:24px;min-height:240px;max-height:360px;display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:var(--shadow)}.media-slot img{width:100%;max-height:360px;object-fit:contain}
.section{margin:56px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:20px}.section-head h2{margin:0;color:var(--ink);font-size:25px}.section-head p{margin:0;color:var(--muted);max-width:680px}
.tag-grid,.card-grid,.topic-grid,.steps,.info-grid{display:grid;gap:16px}.tag-grid{grid-template-columns:repeat(4,1fr)}.tag-item,.card,.topic-card,.step-card,.info-card,.list-row,.note-block,.faq-item,.policy-section{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.tag-item{padding:18px}.dot{width:10px;height:10px;border-radius:50%;display:inline-block;margin-right:8px}.c1{background:var(--pink)}.c2{background:var(--indigo)}.c3{background:var(--cyan)}.c4{background:var(--amber)}.c5{background:var(--mint)}.tag-item h3,.card h3,.topic-card h3,.step-card h3,.info-card h3{margin:6px 0;color:var(--ink)}.tag-item p,.card p,.topic-card p,.step-card p,.info-card p{margin:0;color:var(--muted)}.tag-item a,.text-link{display:inline-flex;margin-top:12px;color:var(--pink);font-weight:800}
.chapter-observe{display:grid;grid-template-columns:1fr .8fr;gap:20px;align-items:start}.chapter-panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow)}.chapter-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:20px}.chapter-list a{padding:14px;border-radius:16px;background:var(--soft);color:var(--ink);font-weight:800}.chapter-list b{color:var(--pink);font-size:20px;margin-right:8px}
.card-grid{grid-template-columns:1.15fr .85fr 1fr;align-items:start}.card{overflow:hidden}.card:nth-child(2){margin-top:28px}.card:nth-child(3){margin-top:10px}.card-body{padding:20px}.card-media{min-height:180px;background:var(--soft);display:flex;align-items:center;justify-content:center}.card-media img{width:100%;max-height:250px;object-fit:cover}
.steps{grid-template-columns:repeat(4,1fr)}.step-card{padding:20px}.step-no,.big-no{font-weight:900;color:var(--pink)}.step-no{font-size:13px;letter-spacing:.18em}.topic-grid{grid-template-columns:repeat(3,1fr);align-items:start}.topic-card{padding:22px}.topic-card:nth-child(2),.topic-card:nth-child(5){margin-top:18px}
.shelf-list,.ranking,.timeline,.article-stack,.policy-list{display:grid;gap:14px}.list-row{padding:18px 20px;display:grid;grid-template-columns:150px 1fr auto;gap:18px;align-items:center}.list-row small{color:var(--faint)}.ranking .rank-row{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px 20px;display:grid;grid-template-columns:72px 1fr;gap:16px;align-items:start}.big-no{font-size:38px;line-height:1}
.timeline{position:relative;padding-left:24px}.timeline:before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;background:var(--line)}.timeline-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px}.timeline-item:before{content:"";position:absolute;left:-23px;top:26px;width:12px;height:12px;border-radius:50%;background:var(--pink);box-shadow:0 0 0 5px var(--paper)}.status{display:inline-flex;padding:4px 10px;border-radius:999px;background:var(--soft);font-size:13px;color:var(--ink);font-weight:800}
.app-block{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;background:#fff;border:1px solid var(--line);border-radius:26px;padding:24px;box-shadow:var(--shadow)}.app-visual{display:flex;gap:16px;align-items:center}.app-visual .app-shot{flex:1;min-height:260px;background:var(--soft);border-radius:22px;display:flex;align-items:center;justify-content:center;overflow:hidden}.app-shot img{max-height:320px;object-fit:contain}.app-icon{width:76px;height:76px;border-radius:18px;background:var(--soft);display:flex;align-items:center;justify-content:center;overflow:hidden;border:1px solid var(--line)}.app-icon img{width:100%;height:100%;object-fit:cover}
.page-head{margin-bottom:28px;padding:28px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.page-head .kicker{color:var(--pink);font-weight:900;letter-spacing:.12em;font-size:13px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.article-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow)}.article-card h2,.policy-section h2,.note-block h2,.faq-item h2{margin-top:0;color:var(--ink)}.article-card h3{color:var(--ink);margin-bottom:6px}.article-card p:last-child{margin-bottom:0}
.quote-note{padding:18px 20px;border-left:4px solid var(--pink);background:#fff;border-radius:0 16px 16px 0;color:var(--muted)}.editor-label{display:inline-flex;padding:5px 10px;border-radius:999px;background:rgba(225,29,143,.10);color:var(--pink);font-weight:900;font-size:12px}.info-grid{grid-template-columns:repeat(3,1fr)}.info-card{padding:20px}.policy-section,.note-block,.faq-item{padding:22px}.faq-list{display:grid;gap:14px}.faq-item p{margin-bottom:0;color:var(--muted)}
.site-footer{background:var(--ink);color:#F7EFE6;padding:56px 18px calc(46px + env(safe-area-inset-bottom))}.footer-inner{max-width:var(--max);margin:auto}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:28px}.footer-logo img{height:34px;width:auto;filter:brightness(0) invert(1)}.footer-brand div{display:flex;flex-direction:column}.footer-brand span{opacity:.7;font-size:12px;letter-spacing:.14em}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-groups h2{font-size:14px;margin:0 0 10px;color:#fff}.footer-groups a{display:block;padding:4px 0;color:#F7EFE6;opacity:.82}.footer-note{margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);opacity:.8}.copyright{opacity:.62;font-size:13px}
.overlay,.modal-layer{visibility:hidden;pointer-events:none;opacity:0;transition:.2s ease}.overlay{position:fixed;inset:0;background:rgba(26,18,48,.48);z-index:80}.overlay.is-open{visibility:visible;pointer-events:auto;opacity:1}.modal-layer{position:fixed;z-index:90}.modal-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}
.book-menu{left:50%;top:50%;transform:translate(-50%,-48%);width:min(840px,calc(100% - 32px));max-height:86vh;background:#fff;border-radius:26px;box-shadow:0 28px 80px rgba(26,18,48,.28);overflow:auto}.book-menu.is-open{transform:translate(-50%,-50%)}.book-menu-head,.search-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;border-bottom:1px solid var(--line)}.menu-brand{display:flex;align-items:center;gap:12px}.menu-brand img{height:30px;width:auto}.menu-brand div{display:flex;flex-direction:column}.menu-brand span{font-size:11px;color:var(--faint);letter-spacing:.15em}
.book-pages{display:grid;grid-template-columns:1fr 1fr}.book-page{padding:20px 24px}.book-page:first-child{border-right:1px solid var(--line);background:linear-gradient(90deg,#fff 0%,#fff 96%,#f3ebe3 100%)}.book-page:last-child{background:linear-gradient(90deg,#f8f3ee 0%,#fff 5%,#fff 100%)}.menu-group+.menu-group{margin-top:22px}.menu-group h2{font-size:14px;color:var(--pink);margin:0 0 8px}.menu-group a{display:block;padding:10px 0;border-bottom:1px dashed var(--line)}.menu-group b{display:block;color:var(--ink)}.menu-group span{font-size:12px;color:var(--muted)}
.search-panel{left:50%;top:50%;transform:translate(-50%,-48%);width:min(560px,calc(100% - 32px))}.search-panel.is-open{transform:translate(-50%,-50%)}.search-card{background:#fff;border-radius:24px;box-shadow:0 28px 80px rgba(26,18,48,.28);overflow:hidden}.search-card>p,.preset-links{margin-left:20px;margin-right:20px}.search-card>p{color:var(--muted)}.search-look{margin:20px;min-height:54px;border:1px solid var(--line);border-radius:16px;display:flex;align-items:center;gap:10px;padding:0 14px;background:var(--paper)}.search-look input{border:0;outline:0;background:transparent;width:100%;min-width:0;color:var(--ink)}.preset-links{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:22px}.preset-links a{padding:9px 13px;border-radius:999px;background:var(--soft);color:var(--ink);font-weight:700}.mobile-nav{display:none}
@media(max-width:900px){.hero,.chapter-observe,.app-block{grid-template-columns:1fr}.tag-grid,.steps{grid-template-columns:repeat(2,1fr)}.card-grid{grid-template-columns:1fr 1fr}.card:nth-child(2),.card:nth-child(3){margin-top:0}.card:nth-child(3){grid-column:1/-1}.topic-grid{grid-template-columns:repeat(2,1fr)}.topic-card:nth-child(2),.topic-card:nth-child(5){margin-top:0}.info-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.masthead{height:64px}.masthead-inner{padding:0 16px;grid-template-columns:44px minmax(0,1fr) 74px}.section-strip{display:none}.brand-mark{min-width:0}.brand-mark img{max-width:150px;height:32px}.search-button{display:none}.app-link{padding:0 12px;font-size:13px;white-space:nowrap}.mast-actions{gap:0}.site-main{padding:88px 16px 92px}.hero{gap:20px;margin-bottom:34px}.hero h1,.page-head h1{font-size:28px}.media-slot{min-height:190px}.section{margin:42px 0}.section-head{display:block}.section-head p{margin-top:6px}.tag-grid,.card-grid,.topic-grid,.steps,.two-col,.info-grid{grid-template-columns:1fr}.card:nth-child(3){grid-column:auto}.chapter-list{grid-template-columns:1fr}.list-row{grid-template-columns:1fr;gap:6px}.footer-groups{grid-template-columns:1fr 1fr}.book-menu{top:16px;bottom:calc(16px + env(safe-area-inset-bottom));transform:translateX(-50%);max-height:none}.book-menu.is-open{transform:translateX(-50%)}.book-pages{grid-template-columns:1fr}.book-page:first-child{border-right:0;border-bottom:1px solid var(--line);background:#fff}.book-page:last-child{background:#fff}.mobile-nav{position:fixed;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line);z-index:40;display:grid;grid-template-columns:repeat(5,1fr)}.mobile-nav a{min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;color:var(--faint);font-size:12px}.mobile-nav a span{font-size:16px}.mobile-nav a b{font-weight:700}.mobile-nav a.active{color:var(--pink)}.site-footer{padding-bottom:calc(78px + env(safe-area-inset-bottom))}}
@media(max-width:420px){.footer-groups{grid-template-columns:1fr}.hero-actions>a{width:100%}.tag-grid{grid-template-columns:1fr}}

.section-media,.page-media{margin:18px 0 24px}.page-media{max-height:340px}.page-media img{max-height:340px;object-fit:contain}