:root{--paper:#FFF8F2;--white:#fff;--soft:#F3EBE3;--ink:#1A1230;--text:#2C2440;--muted:#5A5270;--aux:#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);--max:1160px}
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var(--line);background:#fff;cursor:pointer}.square-btn{width:44px;height:44px;border-radius:12px;font-size:19px}.brand{justify-self:center;font-weight:900;font-size:21px;color:var(--ink);display:flex;align-items:center}.brand-logo{max-height:38px;max-width:200px;object-fit:contain}.mast-actions{justify-self:end;display:flex;align-items:center;gap:8px}.text-btn,.app-link{min-height:44px;display:inline-flex;align-items:center;padding:0 16px;border-radius:999px}.app-link{background:linear-gradient(135deg,var(--indigo),var(--pink) 55%,var(--amber));color:#fff;font-weight:800}.chapter-band{height:46px;background:#fff;border-bottom:1px solid var(--line)}.chapter-inner{height:46px;display:flex;justify-content:center;align-items:center;gap:34px}.chapter-inner a{height:46px;display:flex;align-items:center;position:relative;color:var(--muted);font-weight:700}.chapter-inner a.is-active{color:var(--ink)}.chapter-inner 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20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-weight:900;border:1px solid var(--line)}.btn.primary{background:linear-gradient(135deg,var(--indigo),var(--pink) 55%,var(--amber));color:#fff}.btn.secondary{background:#fff;color:var(--ink)}.cover-art,.media-card{background:var(--soft);border-radius:22px;min-height:240px;display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:var(--shadow)}.cover-art img{max-height:360px;width:100%;object-fit:contain}.section-title{display:flex;justify-content:space-between;gap:16px;align-items:flex-end;margin-bottom:22px}.section-title h2{margin:0;color:var(--ink);font-size:clamp(24px,3vw,30px)}.section-title p{margin:0;color:var(--muted);max-width:620px}.tag-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tag-card,.card,.list-card,.step-card,.topic-card,.note-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow)}.tag-card strong{display:flex;align-items:center;gap:8px;color:var(--ink);font-size:18px}.dot{width:10px;height:10px;border-radius:50%}.dot.p{background:var(--pink)}.dot.i{background:var(--indigo)}.dot.c{background:var(--cyan)}.dot.a{background:var(--amber)}.dot.m{background:var(--mint)}.tag-card p,.card p,.list-card p,.step-card p,.topic-card p,.note-card p{margin:.55em 0 0;color:var(--muted)}.entry-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:start}.number-list{display:grid;gap:12px}.number-item{display:grid;grid-template-columns:60px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}.number{font-size:30px;font-weight:950;color:var(--indigo)}.number-item:nth-child(2) .number{color:var(--pink)}.number-item:nth-child(3) .number{color:var(--cyan)}.number-item:nth-child(4) .number{color:var(--amber)}.number-item h3{margin:0;color:var(--ink)}.number-item p{margin:4px 0 0;color:var(--muted)}.masonry-three{display:grid;grid-template-columns:1.15fr .85fr .95fr;gap:16px;align-items:start}.masonry-three .card:nth-child(2){margin-top:34px}.masonry-three .card:nth-child(3){margin-top:10px}.card-media{margin:-20px -20px 16px}.card-media img{width:100%;max-height:260px;object-fit:contain;background:var(--soft);border-radius:18px 18px 0 0}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.step-card b{display:inline-flex;width:32px;height:32px;align-items:center;justify-content:center;border-radius:10px;background:var(--soft);color:var(--pink)}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:minmax(150px,auto);gap:14px}.topic-card:nth-child(2),.topic-card:nth-child(5){min-height:210px}.shelf{display:grid;gap:10px}.shelf-row{display:grid;grid-template-columns:150px 1fr auto;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px}.shelf-row strong{color:var(--ink)}.shelf-row span{color:var(--muted)}.shelf-row a{font-weight:900;color:var(--indigo)}.big-chart{display:grid;gap:10px}.chart-row{display:grid;grid-template-columns:100px 1fr;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}.chart-num{font-size:48px;font-weight:950;line-height:1;color:var(--pink)}.chart-row:nth-child(2) .chart-num{color:var(--indigo)}.chart-row:nth-child(3) .chart-num{color:var(--cyan)}.chart-row:nth-child(4) .chart-num{color:var(--amber)}.chart-row:nth-child(5) .chart-num{color:var(--mint)}.timeline{position:relative;padding-left:34px}.timeline:before{content:"";position:absolute;left:10px;top:8px;bottom:8px;width:2px;background:var(--line)}.timeline-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;margin:0 0 16px}.timeline-item:before{content:"";position:absolute;left:-31px;top:24px;width:14px;height:14px;border-radius:50%;background:var(--pink);box-shadow:0 0 0 5px var(--paper)}.status{display:inline-flex;padding:3px 10px;border-radius:999px;background:var(--soft);color:var(--ink);font-size:13px;font-weight:900}.prose{max-width:840px}.prose h2,.prose h3{color:var(--ink);line-height:1.35}.prose p{margin:0 0 1.1em}.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.faq{display:grid;gap:12px}.faq article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.faq h2,.faq h3{margin:0 0 8px;color:var(--ink)}.media-inline{margin:18px 0 28px;background:var(--soft);border-radius:20px;overflow:hidden}.media-inline img{max-height:320px;width:100%;object-fit:contain}.site-footer{background:var(--ink);color:#F7EFE6;padding:44px 0 calc(26px + env(safe-area-inset-bottom));margin-top:50px}.footer-brand{display:flex;justify-content:space-between;gap:24px;align-items:center;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.14)}.footer-mark,.book-brand{display:flex;align-items:center;gap:12px}.footer-logo,.book-logo{max-height:34px;max-width:170px;object-fit:contain}.footer-mark div,.book-brand div{display:flex;flex-direction:column}.footer-mark span,.book-brand span{font-size:12px;letter-spacing:.12em;opacity:.72}.footer-brand p{max-width:660px;margin:0;color:#d8cfe6}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:28px 0}.footer-grid h3{margin:0 0 10px;color:#fff}.footer-grid a{display:block;color:#d8cfe6;padding:4px 0}.footer-bottom{font-size:14px;color:#bfb4d0;padding-top:18px;border-top:1px solid rgba(255,255,255,.14)}.overlay{position:fixed;inset:0;background:rgba(26,18,48,.46);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:70}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.book-menu,.search-panel{position:fixed;z-index:80;left:50%;top:50%;transform:translate(-50%,-48%) scale(.98);opacity:0;visibility:hidden;pointer-events:none;background:var(--paper);border-radius:24px;box-shadow:0 24px 80px rgba(26,18,48,.25);transition:.2s}.book-menu.is-open,.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,-50%) scale(1)}.book-menu{width:min(840px,calc(100% - 32px));max-height:82vh;overflow:auto}.book-top,.search-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line)}.book-brand{color:var(--ink)}.close-btn{width:44px;height:44px;border-radius:12px;font-size:26px}.book-pages{display:grid;grid-template-columns:1fr 1fr}.book-page{padding:24px}.book-page+ .book-page{border-left:1px solid var(--line)}.book-page h2{font-size:15px;color:var(--pink);letter-spacing:.12em;margin:0 0 12px}.book-page a{display:block;padding:11px 0;border-bottom:1px solid var(--line)}.book-page b{display:block;color:var(--ink)}.book-page span{display:block;color:var(--muted);font-size:14px;margin-top:3px}.search-panel{width:min(560px,calc(100% - 32px));padding-bottom:20px}.search-look{margin:20px;background:#fff;border:1px solid var(--line);border-radius:999px;min-height:52px;display:flex;align-items:center;padding:0 18px;color:var(--aux)}.preset-links{display:flex;gap:10px;flex-wrap:wrap;padding:0 20px}.preset-links a{background:var(--soft);padding:8px 14px;border-radius:999px;font-weight:800;color:var(--ink)}.mobile-nav{display:none}.accent-strip{height:6px;border-radius:999px;background:linear-gradient(90deg,var(--pink),var(--indigo),var(--cyan),var(--amber),var(--mint));margin:18px 0 0}.notice{padding:16px 18px;background:#fff;border-left:4px solid var(--amber);border-radius:14px;color:var(--muted)}
@media(max-width:900px){.tag-grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}.masonry-three{grid-template-columns:1fr 1fr}.masonry-three .card:nth-child(3){grid-column:1/-1}.topic-grid{grid-template-columns:repeat(2,1fr)}.entry-grid{grid-template-columns:1fr}.info-grid{grid-template-columns:1fr}}
@media(max-width:720px){.shell{width:min(var(--max),calc(100% - 32px))}.masthead{grid-template-columns:52px 1fr 84px}.brand-logo{max-width:150px}.search-trigger{display:none}.app-link{padding:0 12px;font-size:14px}.chapter-band{display:none}.site-main{padding-top:72px;padding-bottom:58px}.cover{padding-top:34px}.cover-grid{grid-template-columns:1fr}.cover-kicker{writing-mode:horizontal-tb;float:none;display:block;margin:0 0 10px}.cover-art{min-height:170px}.tag-grid,.steps,.topic-grid,.masonry-three{grid-template-columns:1fr}.masonry-three .card:nth-child(2),.masonry-three .card:nth-child(3){margin-top:0}.masonry-three .card:nth-child(3){grid-column:auto}.shelf-row{grid-template-columns:1fr;gap:6px}.footer-brand{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:repeat(2,1fr)}.book-pages{grid-template-columns:1fr}.book-page+ .book-page{border-left:0;border-top:1px solid var(--line)}.book-menu{max-height:86vh}.mobile-nav{position:fixed;z-index:50;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);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-nav a{display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;color:var(--muted)}.mobile-nav a.is-active{color:var(--pink)}.chart-row{grid-template-columns:70px 1fr}.chart-num{font-size:40px}.page-hero,.content-section{padding:34px 0}.site-footer{margin-top:26px;padding-bottom:calc(76px + env(safe-area-inset-bottom))}}
@media(max-width:420px){.footer-grid{grid-template-columns:1fr}.tag-grid{grid-template-columns:1fr}.masthead{grid-template-columns:48px 1fr 78px}.brand{font-size:18px}.brand-logo{max-width:130px}.app-link{font-size:13px;padding:0 9px}.square-btn{width:44px;height:44px}.book-top{padding:14px}.book-page{padding:18px}.cover-copy h1{font-size:29px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}