:root{
  --paper:#FFF8F2;--white:#FFFFFF;--soft:#F3EBE3;--ink:#1A1230;--text:#2C2440;--muted:#5A5270;--quiet:#8A8298;
  --magenta:#E11D8F;--indigo:#6366F1;--cyan:#0891B2;--amber:#D97706;--mint:#059669;
  --border: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(--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}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}a:hover{color:var(--magenta)}a:focus-visible,button:focus-visible{outline:3px solid rgba(99,102,241,.35);outline-offset:3px}button{font:inherit;color:inherit}.skip-link{position:fixed;left:16px;top:-60px;z-index:100;background:var(--ink);color:#fff;padding:10px 16px;border-radius:999px}.skip-link:focus{top:8px}.masthead{position:fixed;inset:0 0 auto 0;height:72px;background:rgba(255,248,242,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:50}.masthead-inner{max-width:var(--max);height:100%;margin:auto;padding:0 20px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}.menu-button{justify-self:start}.brand-link{display:flex;align-items:center;justify-content:center;min-width:140px}.brand-logo{display:block;max-height:38px;max-width:210px;width:auto}.brand-text{font-size:22px;font-weight:900;letter-spacing:.12em;color:var(--ink)}.mast-actions{justify-self:end;display:flex;align-items:center;gap:10px}.icon-button{min-width:44px;min-height:44px;border:0;background:transparent;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer}.icon-button:hover{background:var(--soft)}.app-button,.btn-primary,.btn-secondary{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:10px 18px;border-radius:999px;font-weight:800}.app-button,.btn-primary{color:#fff;background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%)}.app-button:hover,.btn-primary:hover{color:#fff;filter:brightness(.98)}.btn-secondary{background:#fff;color:var(--ink);border:1px solid var(--border)}.chapter-strip{position:fixed;top:72px;left:0;right:0;height:46px;background:#fff;border-bottom:1px solid var(--border);z-index:45}.chapter-inner{max-width:760px;height:100%;margin:auto;display:flex;align-items:center;justify-content:center;gap:34px}.chapter-inner a{height:100%;display:flex;align-items:center;position:relative;font-size:15px;font-weight:800;color:var(--muted)}.chapter-inner a.active{color:var(--ink)}.chapter-inner a.active:after{content:"";position:absolute;left:10%;right:10%;bottom:0;height:3px;background:var(--magenta);border-radius:3px 3px 0 0}.site-main{padding-top:118px}.container{width:min(var(--max),calc(100% - 40px));margin:0 auto}.page-hero{padding:56px 0 28px}.page-hero .eyebrow,.eyebrow{margin:0 0 8px;font-size:13px;font-weight:900;letter-spacing:.16em;color:var(--magenta)}h1,h2,h3{color:var(--ink);line-height:1.25;margin-top:0}h1{font-size:clamp(28px,4vw,34px);margin-bottom:14px}h2{font-size:clamp(22px,3vw,28px)}h3{font-size:18px}.lede{max-width:800px;font-size:17px;color:var(--muted);margin:0}.section{padding:34px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}.section-head p{margin:0;color:var(--muted);max-width:650px}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.grid-2,.grid-3,.grid-4{display:grid;gap:18px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card p:last-child{margin-bottom:0}.accent-line{height:4px;width:54px;border-radius:99px;background:linear-gradient(90deg,var(--indigo),var(--magenta),var(--amber));margin-bottom:14px}.tag{display:inline-flex;align-items:center;min-height:30px;padding:4px 10px;border-radius:999px;background:var(--soft);font-size:13px;font-weight:800;color:var(--ink)}.num{font-size:44px;font-weight:950;line-height:1;color:var(--indigo)}.num.magenta{color:var(--magenta)}.num.cyan{color:var(--cyan)}.num.amber{color:var(--amber)}.num.mint{color:var(--mint)}.image-slot{background:linear-gradient(135deg,#F3EBE3,#fff);border:1px solid var(--border);border-radius:22px;min-height:220px;display:flex;align-items:center;justify-content:center;overflow:hidden}.image-slot img{display:block;width:100%;height:auto;max-height:360px;object-fit:contain}.image-slot.small{min-height:160px}.image-slot.tall{min-height:280px}.hero-cover{padding:52px 0 42px}.cover-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:34px;align-items:center}.vertical-kicker{writing-mode:vertical-rl;letter-spacing:.2em;font-weight:900;color:var(--magenta);float:left;margin-right:18px}.cover-copy p{font-size:17px;color:var(--muted);max-width:620px}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.topic-tags{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.topic-item{background:#fff;border:1px solid var(--border);border-radius:18px;padding:18px}.topic-item .dot{width:10px;height:10px;border-radius:50%;display:inline-block;margin-right:8px;background:var(--magenta)}.topic-item:nth-child(4n+2) .dot{background:var(--indigo)}.topic-item:nth-child(4n+3) .dot{background:var(--cyan)}.topic-item:nth-child(4n) .dot{background:var(--amber)}.topic-item a{font-weight:900}.chapter-report{display:grid;grid-template-columns:1fr .9fr;gap:24px}.report-list{display:grid;gap:12px}.report-row{display:grid;grid-template-columns:52px 1fr;gap:12px;align-items:start;padding:16px 0;border-bottom:1px solid var(--border)}.report-row:last-child{border-bottom:0}.masonry-cards{display:grid;grid-template-columns:1.15fr .85fr .95fr;gap:18px;align-items:start}.masonry-cards .card:nth-child(2){margin-top:28px}.masonry-cards .card:nth-child(3){margin-top:10px}.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.step{position:relative;background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px}.step:before{counter-increment:step;content:"0" counter(step);display:block;font-weight:950;color:var(--indigo);margin-bottom:10px}.theme-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:start}.theme-wall .card:nth-child(2),.theme-wall .card:nth-child(5){margin-top:22px}.shelf-list{background:#fff;border:1px solid var(--border);border-radius:22px;overflow:hidden}.shelf-row{display:grid;grid-template-columns:110px 1fr auto;gap:18px;align-items:center;padding:20px 22px;border-bottom:1px solid var(--border)}.shelf-row:last-child{border-bottom:0}.shelf-row .spine{font-weight:950;color:var(--magenta)}.editor-rank{display:grid;gap:14px}.rank-row{display:grid;grid-template-columns:76px 1fr;gap:18px;background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px}.timeline{position:relative;margin-left:16px;padding-left:34px}.timeline:before{content:"";position:absolute;left:5px;top:10px;bottom:10px;width:2px;background:rgba(99,102,241,.25)}.timeline-item{position:relative;margin-bottom:22px;background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px}.timeline-item:before{content:"";position:absolute;left:-35px;top:25px;width:12px;height:12px;border-radius:50%;background:var(--magenta);box-shadow:0 0 0 5px var(--paper)}.status{font-size:13px;font-weight:900;color:var(--mint)}.status.pending{color:var(--amber)}.status.work{color:var(--indigo)}.note{border-left:4px solid var(--magenta);padding:4px 0 4px 18px;color:var(--muted)}.prose{max-width:860px}.prose p{margin:0 0 18px}.prose h2{margin-top:34px}.terms section{background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px;margin-bottom:16px}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px}.faq-item h2{font-size:18px}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-grid .card{min-height:190px}.pill-links{display:flex;flex-wrap:wrap;gap:10px}.pill-links a{min-height:44px;padding:9px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);font-weight:800}.app-showcase{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:center}.app-icon-box{width:74px;height:74px;border-radius:20px;background:#fff;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden;margin-bottom:14px}.app-icon-box img{max-width:100%;max-height:100%}.site-footer{background:var(--ink);color:#F7EFE6;margin-top:70px;padding:48px 0 calc(34px + env(safe-area-inset-bottom))}.footer-inner{max-width:var(--max);margin:auto;padding:0 20px}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:28px}.footer-brand strong{display:block;font-size:20px}.footer-brand span{font-size:12px;letter-spacing:.14em;opacity:.72}.footer-logo{max-height:34px;max-width:180px;display:block}.footer-logo-link .brand-text{color:#fff}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-grid h2{color:#fff;font-size:15px}.footer-grid a{display:block;color:#F7EFE6;opacity:.82;margin:7px 0}.footer-grid a:hover{opacity:1;color:#fff}.footer-note{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:22px;opacity:.8}.copyright{font-size:13px;opacity:.62}.overlay{position:fixed;inset:0;background:rgba(26,18,48,.48);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.book-menu,.search-layer{position:fixed;z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.book-menu.is-open,.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto}.book-menu{top:50%;left:50%;transform:translate(-50%,-48%);width:min(840px,calc(100% - 32px));max-height:88vh;background:#fff;border-radius:22px;box-shadow:0 28px 80px rgba(26,18,48,.28);overflow:auto}.book-menu.is-open{transform:translate(-50%,-50%)}.book-menu-head{position:sticky;top:0;z-index:2;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:14px 18px}.menu-brand{display:flex;align-items:center;gap:12px;font-weight:950}.menu-logo{max-height:28px;max-width:150px}.book-spread{display:grid;grid-template-columns:1fr 1fr}.book-page{padding:22px 26px}.book-page:first-child{border-right:1px solid var(--border);background:linear-gradient(90deg,#fff 0%,#fff 95%,rgba(26,18,48,.03) 100%)}.book-page h2{font-size:14px;color:var(--magenta);letter-spacing:.12em;margin:8px 0}.book-page a{display:block;padding:10px 0;border-bottom:1px dashed var(--border)}.book-page a strong,.book-page a span{display:block}.book-page a span{font-size:13px;color:var(--muted)}.search-layer{inset:0;display:flex;align-items:center;justify-content:center;padding:20px}.search-card{position:relative;width:min(560px,100%);background:#fff;border-radius:22px;box-shadow:0 28px 80px rgba(26,18,48,.28);padding:28px}.search-close{position:absolute;right:14px;top:12px}.search-look{height:52px;border:1px solid var(--border);border-radius:999px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;color:var(--quiet);background:var(--paper)}.preset-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.preset-links a{padding:9px 13px;border-radius:999px;background:var(--soft);font-weight:800}.mobile-bottom{display:none}
@media(max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.cover-grid,.chapter-report,.app-showcase{grid-template-columns:1fr}.masonry-cards{grid-template-columns:1fr 1fr}.masonry-cards .card:nth-child(3){grid-column:1/-1}.steps{grid-template-columns:repeat(2,1fr)}.theme-wall{grid-template-columns:repeat(2,1fr)}.topic-tags{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.masthead{height:64px}.masthead-inner{padding:0 16px;grid-template-columns:52px minmax(0,1fr) auto}.brand-link{min-width:0}.brand-logo{max-width:150px;max-height:34px}.brand-text{font-size:19px}.desktop-only,.search-button{display:none}.app-button{padding:8px 13px;font-size:14px}.chapter-strip{display:none}.site-main{padding-top:64px}.container{width:calc(100% - 32px)}.page-hero{padding:38px 0 18px}.hero-cover{padding:36px 0 28px}.cover-grid{gap:22px}.vertical-kicker{writing-mode:horizontal-tb;float:none;margin:0 0 6px}.topic-tags,.grid-2,.grid-3,.grid-4,.masonry-cards,.steps,.theme-wall,.contact-grid{grid-template-columns:1fr}.masonry-cards .card:nth-child(2),.masonry-cards .card:nth-child(3),.theme-wall .card:nth-child(2),.theme-wall .card:nth-child(5){margin-top:0;grid-column:auto}.shelf-row{grid-template-columns:1fr;gap:6px}.rank-row{grid-template-columns:58px 1fr}.book-menu{width:calc(100% - 24px);max-height:86vh}.book-spread{grid-template-columns:1fr}.book-page{padding:16px 20px}.book-page:first-child{border-right:0;border-bottom:1px solid var(--border)}.search-layer{padding:12px}.search-card{padding:24px 18px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:60;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{display:flex;min-width:0;align-items:center;justify-content:center;flex-direction:column;font-size:11px;color:var(--muted)}.mobile-bottom a span{font-size:15px;line-height:1}.mobile-bottom a.active{color:var(--magenta);font-weight:900}.site-footer{margin-top:50px;padding-bottom:38px}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-inner{padding:0 16px}}
@media(max-width:380px){.app-button{padding:7px 10px}.brand-text{font-size:17px}.rank-row{grid-template-columns:1fr}.num{font-size:36px}}