:root{
    --paper:#FFF8F2;--white:#FFFFFF;--soft:#F3EBE3;--ink:#1A1230;--text:#2C2440;--muted:#5A5270;--faint:#8A8298;
    --pink:#E11D8F;--indigo:#6366F1;--cyan:#0891B2;--amber:#D97706;--mint:#059669;
    --border:rgba(26,18,48,.10);--shadow:0 14px 34px rgba(26,18,48,.08);--max:1160px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%;height:auto}.overlay-open{overflow:hidden}
.masthead{position:fixed;z-index:50;top:0;left:0;right:0;height:72px;background:rgba(255,248,242,.97);border-bottom:1px solid var(--border);backdrop-filter:blur(10px)}.masthead-inner{max-width:var(--max);height:100%;margin:auto;padding:0 20px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px}.square-action,.text-action,.app-action{min-height:44px;border-radius:999px;border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;background:var(--white);color:var(--ink);font-weight:700}.square-action{width:54px;border-radius:14px;justify-self:start}.masthead-actions{justify-self:end;display:flex;gap:10px}.text-action{padding:0 18px}.app-action{padding:0 20px;color:#fff;border:0;background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%)}.brand-lockup{display:flex;justify-content:center;align-items:center;min-height:44px}.masthead-logo{max-height:38px;width:auto}.brand-fallback{font-size:23px;color:var(--ink);font-weight:900;letter-spacing:.08em}
.chapter-band{position:fixed;z-index:45;top:72px;left:0;right:0;height:46px;background:var(--white);border-bottom:1px solid var(--border)}.chapter-inner{max-width:760px;margin:auto;height:100%;display:flex;align-items:center;justify-content:center;gap:34px;padding:0 16px}.chapter-inner a{height:100%;display:flex;align-items:center;position:relative;font-size:14px;font-weight:800;color:var(--muted)}.chapter-inner a.is-current{color:var(--ink)}.chapter-inner a.is-current:after{content:"";position:absolute;left:8px;right:8px;bottom:0;height:3px;background:var(--pink);border-radius:3px 3px 0 0}
.site-main{padding-top:118px;min-height:68vh}.wrap{width:min(var(--max),calc(100% - 40px));margin:0 auto}.page-hero{padding:54px 0 28px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--pink);font-size:13px;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.eyebrow:before{content:"";width:22px;height:3px;background:currentColor;border-radius:999px}.page-hero h1,.cover-copy h1{margin:12px 0 16px;color:var(--ink);font-size:clamp(28px,4vw,34px);line-height:1.25;letter-spacing:-.02em}.lead{max-width:820px;color:var(--muted);font-size:17px}.section{padding:34px 0}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:20px}.section-head h2{margin:0;color:var(--ink);font-size:25px}.section-head p{margin:0;max-width:630px;color:var(--muted)}.card{background:var(--white);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow)}.article-card{padding:26px}.article-card h2,.article-card h3{color:var(--ink);margin-top:0}.article-card p:last-child{margin-bottom:0}.muted{color:var(--muted)}
.cover{padding:46px 0 26px}.cover-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);gap:34px;align-items:center}.cover-kicker{writing-mode:vertical-rl;letter-spacing:.28em;color:var(--pink);font-weight:900;font-size:13px}.cover-copy-inner{display:grid;grid-template-columns:auto 1fr;gap:18px}.cover-copy p{max-width:680px;color:var(--muted)}.cover-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.btn{min-height:46px;padding:0 20px;border-radius:999px;border:1px solid var(--border);font-weight:800;display:inline-flex;align-items:center;justify-content:center}.btn-primary{color:#fff;border:0;background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%)}.btn-secondary{background:var(--white);color:var(--ink)}.cover-media,.media-panel{background:var(--soft);border-radius:22px;min-height:260px;overflow:hidden;border:1px solid var(--border);display:flex;align-items:center;justify-content:center}.cover-media img{max-height:360px;width:100%;object-fit:contain}.image-slot{background:linear-gradient(135deg,rgba(99,102,241,.12),rgba(225,29,143,.08),rgba(217,119,6,.10));min-height:220px;border-radius:18px}.cover-media .image-slot{width:100%;min-height:320px}.content-image{width:100%;max-height:330px;object-fit:cover;border-radius:18px}
.tag-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tag-item{position:relative;padding:20px 20px 20px 42px;background:var(--white);border:1px solid var(--border);border-radius:18px}.tag-item:before{content:"";position:absolute;left:19px;top:27px;width:9px;height:9px;border-radius:50%;background:var(--pink)}.tag-item:nth-child(4n+2):before{background:var(--indigo)}.tag-item:nth-child(4n+3):before{background:var(--cyan)}.tag-item:nth-child(4n):before{background:var(--amber)}.tag-item strong{display:block;color:var(--ink);margin-bottom:4px}.tag-item p{margin:0 0 8px;color:var(--muted);font-size:14px}.text-link{color:var(--indigo);font-weight:800}
.feature-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}.chapter-list{display:grid;gap:12px;margin-top:18px}.chapter-row{display:grid;grid-template-columns:56px 1fr auto;gap:14px;align-items:center;padding:14px 0;border-top:1px solid var(--border)}.chapter-row strong:first-child{font-size:24px;color:var(--pink)}.chapter-row:nth-child(2) strong:first-child{color:var(--indigo)}.chapter-row:nth-child(3) strong:first-child{color:var(--cyan)}.chapter-row:nth-child(4) strong:first-child{color:var(--amber)}
.mosaic{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;align-items:start}.mosaic .card:nth-child(2){margin-top:34px}.mosaic .card:nth-child(3){margin-top:12px}.card-media{margin-bottom:16px}.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{padding:22px;background:var(--white);border:1px solid var(--border);border-radius:18px}.step b{display:block;color:var(--pink);font-size:13px;letter-spacing:.1em}.step h3{color:var(--ink);margin:7px 0}.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.theme-grid .card{padding:22px}.theme-grid .card:nth-child(2),.theme-grid .card:nth-child(5){transform:translateY(16px)}.shelf-list{display:grid;gap:12px}.shelf-row{display:grid;grid-template-columns:110px 1fr auto;gap:18px;align-items:center;padding:18px 20px;background:var(--white);border:1px solid var(--border);border-radius:16px}.shelf-row .shelf-label{font-weight:900;color:var(--ink)}.rank-list{display:grid;gap:12px}.rank-item{display:grid;grid-template-columns:72px 1fr;gap:18px;align-items:start;padding:20px;background:var(--white);border:1px solid var(--border);border-radius:18px}.rank-num{font-size:38px;line-height:1;font-weight:950;color:var(--pink)}.rank-item:nth-child(2) .rank-num{color:var(--indigo)}.rank-item:nth-child(3) .rank-num{color:var(--cyan)}.rank-item:nth-child(4) .rank-num{color:var(--amber)}.rank-item:nth-child(5) .rank-num{color:var(--mint)}.timeline{position:relative;padding-left:30px;display:grid;gap:18px}.timeline:before{content:"";position:absolute;left:10px;top:10px;bottom:10px;width:2px;background:var(--border)}.timeline-item{position:relative;padding:20px 22px;background:var(--white);border:1px solid var(--border);border-radius:18px}.timeline-item:before{content:"";position:absolute;left:-27px;top:28px;width:12px;height:12px;background:var(--pink);border-radius:50%;box-shadow:0 0 0 6px var(--paper)}.status{display:inline-flex;padding:4px 10px;border-radius:999px;background:var(--soft);font-size:12px;font-weight:800;color:var(--muted)}.status.done{color:var(--mint)}.status.building{color:var(--indigo)}.status.pending{color:var(--amber)}
.split-panel{display:grid;grid-template-columns:.85fr 1.15fr;gap:24px;align-items:center}.app-icon{width:74px;height:74px;border-radius:18px;overflow:hidden;background:var(--soft);display:flex;align-items:center;justify-content:center;margin-bottom:18px}.app-icon img{width:100%;height:100%;object-fit:cover}.pill-list{display:flex;flex-wrap:wrap;gap:9px;margin:16px 0 0}.pill{display:inline-flex;align-items:center;min-height:34px;padding:0 12px;border-radius:999px;background:var(--soft);color:var(--ink);font-size:13px;font-weight:800}
.content-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.content-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.content-grid .article-card{height:100%}.index-list{display:grid;gap:10px}.index-row{display:grid;grid-template-columns:140px 1fr auto;gap:18px;align-items:start;padding:18px 0;border-bottom:1px solid var(--border)}.index-row:last-child{border-bottom:0}.index-row h3{margin:0;color:var(--ink)}.note-box{padding:22px;border-radius:18px;background:var(--soft);border:1px solid var(--border)}.editor-note{border-left:4px solid var(--pink);padding-left:18px}.rule-sections{display:grid;gap:16px}.faq-list{display:grid;gap:14px}.faq-item{padding:22px;background:var(--white);border:1px solid var(--border);border-radius:18px}.faq-item h2{font-size:18px;color:var(--ink);margin:0 0 8px}.faq-item p{margin:0;color:var(--muted)}
.site-footer{background:var(--ink);color:#F7EFE6;margin-top:48px;padding:48px 0 calc(34px + env(safe-area-inset-bottom))}.footer-inner{width:min(var(--max),calc(100% - 40px));margin:auto}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:30px}.footer-brand strong{font-size:20px}.footer-brand span{color:rgba(247,239,230,.65);font-size:13px}.footer-logo{max-height:34px;width:auto;filter:brightness(0) invert(1)}.footer-brand-title{font-size:20px;font-weight:900}.footer-directory{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:28px 0;border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12)}.footer-directory h2{font-size:14px;margin:0 0 12px;color:#fff}.footer-directory a{display:block;color:rgba(247,239,230,.74);font-size:14px;margin:8px 0}.footer-directory a:hover{color:#fff}.footer-notice{max-width:820px;color:rgba(247,239,230,.72);font-size:13px}.footer-copy{color:rgba(247,239,230,.5);font-size:12px;margin-bottom:0}
.page-overlay{position:fixed;z-index:70;inset:0;background:rgba(26,18,48,.42);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,visibility .18s ease}.page-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.book-menu,.search-panel{position:fixed;z-index:80;left:50%;top:50%;transform:translate(-50%,-47%) scale(.98);opacity:0;visibility:hidden;pointer-events:none;transition:.18s ease;background:var(--paper);border:1px solid var(--border);box-shadow:0 30px 80px rgba(26,18,48,.20)}.book-menu.is-open,.search-panel.is-open{transform:translate(-50%,-50%) scale(1);opacity:1;visibility:visible;pointer-events:auto}.book-menu{width:min(840px,calc(100% - 36px));max-height:82vh;border-radius:24px;overflow:auto}.book-menu-head,.search-head{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 22px;border-bottom:1px solid var(--border)}.book-brand{display:flex;align-items:center;gap:12px}.book-brand div{display:flex;flex-direction:column}.book-brand span{font-size:11px;color:var(--faint)}.book-logo{max-height:30px;width:auto}.overlay-close{min-width:64px;min-height:44px;border-radius:999px;border:1px solid var(--border);background:var(--white);color:var(--ink);font-weight:800}.book-spread{display:grid;grid-template-columns:1fr 1fr}.book-page{padding:24px}.book-page:nth-child(odd){border-right:1px solid var(--border)}.book-page:nth-child(n+3){border-top:1px solid var(--border)}.book-page h2{margin:0 0 12px;color:var(--pink);font-size:14px}.book-links{display:grid;gap:10px}.book-links a{padding:11px 12px;border-radius:12px;background:rgba(255,255,255,.72)}.book-links strong{display:block;color:var(--ink);font-size:15px}.book-links span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:3px}.search-panel{width:min(620px,calc(100% - 36px));border-radius:22px}.search-head h2{margin:5px 0 0;color:var(--ink);font-size:21px}.search-look{margin:22px;padding:16px 18px;border:1px solid var(--border);background:var(--white);border-radius:14px;color:var(--faint)}.search-presets{padding:0 22px 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.search-presets a{min-height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--white);border-radius:999px;color:var(--ink);font-weight:800}
.mobile-bottom{display:none}a:focus-visible,button:focus-visible{outline:3px solid rgba(99,102,241,.35);outline-offset:3px}
@media(max-width:900px){.tag-grid{grid-template-columns:repeat(2,1fr)}.mosaic{grid-template-columns:1fr 1fr}.mosaic .card:nth-child(3){grid-column:1/-1;margin-top:0}.step-grid{grid-template-columns:repeat(2,1fr)}.theme-grid{grid-template-columns:repeat(2,1fr)}.theme-grid .card:nth-child(2),.theme-grid .card:nth-child(5){transform:none}.content-grid.three{grid-template-columns:repeat(2,1fr)}.footer-directory{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.masthead{height:72px}.masthead-inner{grid-template-columns:72px minmax(0,1fr) 88px;padding:0 16px;gap:8px}.square-action{width:52px}.masthead-actions{width:100%;justify-content:flex-end}.desktop-search{display:none}.app-action{padding:0 12px;font-size:13px;white-space:nowrap}.brand-fallback{font-size:20px}.chapter-band{display:none}.site-main{padding-top:72px}.wrap,.footer-inner{width:min(100% - 32px,var(--max))}.page-hero{padding:38px 0 20px}.cover{padding-top:28px}.cover-grid,.feature-grid,.split-panel{grid-template-columns:1fr}.cover-copy-inner{grid-template-columns:1fr}.cover-kicker{writing-mode:horizontal-tb;letter-spacing:.18em}.cover-media{min-height:210px}.cover-media .image-slot{min-height:230px}.tag-grid,.mosaic,.step-grid,.theme-grid,.content-grid,.content-grid.three{grid-template-columns:1fr}.mosaic .card:nth-child(2),.mosaic .card:nth-child(3){margin-top:0}.chapter-row{grid-template-columns:46px 1fr}.chapter-row a{grid-column:2}.shelf-row,.index-row{grid-template-columns:1fr}.rank-item{grid-template-columns:56px 1fr}.section{padding:26px 0}.section-head{align-items:start;flex-direction:column}.footer-directory{grid-template-columns:1fr 1fr;gap:20px}.book-menu{width:calc(100% - 24px);max-height:88vh}.book-spread{display:block}.book-page{border-right:0!important;border-top:1px solid var(--border)!important}.book-page:first-child{border-top:0!important}.search-panel{width:calc(100% - 24px)}.search-presets{grid-template-columns:repeat(2,1fr)}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:40;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.98);border-top:1px solid var(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;font-size:12px;font-weight:800;color:var(--muted)}.mobile-bottom a.is-current{color:var(--pink)}.site-footer{padding-bottom:34px}}
@media(max-width:460px){.masthead-inner{grid-template-columns:58px minmax(0,1fr) 80px}.square-action{width:48px;font-size:12px}.app-action{font-size:12px;padding:0 9px}.brand-fallback{font-size:18px}.tag-grid{grid-template-columns:1fr}.footer-directory{grid-template-columns:1fr}.search-presets{grid-template-columns:1fr}.cover-actions{display:grid}.btn{width:100%}}