:root{--paper:#FFF8F2;--ink:#1A1230;--text:#2C2440;--muted:#5A5270;--soft:#8A8298;--line:rgba(26,18,48,.10);--white:#fff;--pink:#E11D8F;--indigo:#6366F1;--cyan:#0891B2;--amber:#D97706;--mint:#059669;--shadow:0 14px 34px rgba(26,18,48,.08)}*{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","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.locked{overflow:hidden}.masthead{position:fixed;z-index:80;left:0;right:0;top:0;height:72px;background:rgba(255,248,242,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.masthead-inner{max-width:1160px;height:100%;margin:auto;padding:0 18px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}.square-btn{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px}.square-btn span{width:18px;height:2px;background:var(--ink);border-radius:2px}.brand{justify-self:center;display:flex;align-items:center;min-height:44px;color:var(--ink);font-size:20px;letter-spacing:.08em}.brand-logo{max-height:38px;max-width:210px;width:auto;object-fit:contain}.mast-actions{justify-self:end;display:flex;align-items:center;gap:10px}.text-btn{border:0;background:transparent;color:var(--ink);min-height:44px;padding:0 10px}.app-link,.btn-primary,.btn-secondary{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:0 20px;font-weight:700}.app-link,.btn-primary{color:#fff;background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%)}.btn-secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}.chapter-bar{position:fixed;z-index:70;left:0;right:0;top:72px;height:46px;background:#fff;border-bottom:1px solid var(--line)}.chapter-inner{max-width:1160px;height:100%;margin:auto;display:flex;align-items:center;justify-content:center;gap:38px}.chapter-inner a{height:46px;display:flex;align-items:center;position:relative;color:var(--muted)}.chapter-inner a.active{color:var(--ink);font-weight:700}.chapter-inner a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--pink);border-radius:3px}.site-main{padding-top:118px}.wrap{max-width:1160px;margin:auto;padding:56px 18px}.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;min-height:430px}.hero-copy{max-width:620px}.eyebrow{display:inline-block;color:var(--pink);font-weight:800;letter-spacing:.16em;margin-bottom:10px}.hero h1,.page-hero h1{font-size:clamp(28px,4vw,34px);line-height:1.25;margin:.1em 0 .55em;color:var(--ink)}.hero p,.page-hero p{font-size:17px;color:var(--muted);max-width:760px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.hero-media{display:flex;justify-content:center}.hero-media img{width:100%;max-height:360px;object-fit:contain;border-radius:22px;background:#fff;box-shadow:var(--shadow)}.section{padding:54px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section-title h2{margin:0;color:var(--ink);font-size:26px}.section-title p{margin:0;color:var(--muted);max-width:600px}.tag-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tag-card,.card,.panel,.faq-item,.shelf-row,.step-card,.timeline-item{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.tag-card{border-radius:18px;padding:20px}.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-card h3,.card h3,.panel h3,.step-card h3{color:var(--ink);margin:.5em 0}.tag-card p,.card p,.panel p{color:var(--muted);margin:.4em 0}.tag-card a,.text-link{font-weight:700;color:var(--indigo)}.feature{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px;align-items:center}.content-image{max-width:100%;max-height:420px;width:auto;height:auto;object-fit:contain;border-radius:20px;display:block;margin:auto}.chapter-list{display:grid;gap:12px}.chapter-item{display:grid;grid-template-columns:54px 1fr;gap:16px;align-items:start;padding:16px 0;border-bottom:1px solid var(--line)}.chapter-no,.big-no{font-weight:900;color:var(--pink);font-size:26px;line-height:1}.cards-3{display:grid;grid-template-columns:1fr 1.08fr .92fr;gap:18px;align-items:start}.card{border-radius:20px;padding:22px}.card img{width:100%;max-height:250px;object-fit:contain;border-radius:14px;margin-bottom:14px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.step-card{padding:20px;border-radius:18px}.step-card b{color:var(--pink);font-size:20px}.masonry{columns:3;column-gap:16px}.masonry .card{break-inside:avoid;margin-bottom:16px}.shelf{display:grid;gap:12px}.shelf-row{border-radius:16px;padding:18px 20px;display:grid;grid-template-columns:120px 1fr auto;gap:20px;align-items:center}.shelf-row strong{color:var(--ink)}.number-list{display:grid;gap:14px}.number-row{display:grid;grid-template-columns:74px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.big-no{font-size:40px}.timeline{position:relative;margin-left:12px;padding-left:28px;border-left:2px solid rgba(99,102,241,.25);display:grid;gap:18px}.timeline-item{position:relative;border-radius:18px;padding:20px}.timeline-item:before{content:"";position:absolute;width:12px;height:12px;border-radius:50%;background:var(--pink);left:-35px;top:27px;box-shadow:0 0 0 5px var(--paper)}.status{display:inline-flex;border-radius:999px;padding:4px 10px;background:#F3EBE3;color:var(--ink);font-size:14px;font-weight:700}.page-hero{padding:60px 0 26px}.page-hero .hero-line{width:70px;height:5px;border-radius:999px;background:linear-gradient(90deg,var(--indigo),var(--pink),var(--amber));margin-bottom:22px}.prose{max-width:860px}.prose h2{font-size:24px;color:var(--ink);margin:1.8em 0 .6em}.prose h3{font-size:19px;color:var(--ink);margin:1.4em 0 .4em}.prose p{margin:.8em 0}.note{border-left:4px solid var(--pink);background:#fff;padding:18px 20px;border-radius:0 16px 16px 0}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.panel{border-radius:18px;padding:22px}.faq-list{display:grid;gap:14px}.faq-item{border-radius:18px;padding:22px}.faq-item h2,.faq-item h3{font-size:18px;color:var(--ink);margin:0 0 8px}.faq-item p{margin:0;color:var(--muted)}.cta-strip{background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%);color:#fff;border-radius:22px;padding:28px}.cta-strip h2,.cta-strip p{color:#fff}.overlay{position:fixed;z-index:120;inset:0;background:rgba(26,18,48,.52);display:flex;align-items:center;justify-content:center;padding:20px;visibility:hidden;opacity:0;pointer-events:none;transition:.2s}.overlay.show{visibility:visible;opacity:1;pointer-events:auto}.book-menu,.search-card{width:min(840px,100%);max-height:min(86vh,760px);overflow:auto;background:var(--paper);border-radius:22px;box-shadow:0 30px 80px rgba(26,18,48,.28)}.dialog-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;min-height:70px;padding:12px 20px;background:rgba(255,248,242,.97);border-bottom:1px solid var(--line)}.dialog-brand{display:flex;align-items:center;gap:12px;color:var(--ink)}.dialog-brand img{height:32px;max-width:170px;object-fit:contain}.close-btn{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:28px}.book-pages{display:grid;grid-template-columns:1fr 1fr}.book-pages section{padding:26px}.book-pages section:nth-child(odd){border-right:1px solid var(--line)}.book-pages section:nth-child(-n+2){border-bottom:1px solid var(--line)}.book-pages h2{font-size:18px;color:var(--pink);margin:0 0 14px}.book-pages a{display:block;padding:12px 0;border-bottom:1px dashed var(--line)}.book-pages b{display:block;color:var(--ink)}.book-pages span{display:block;color:var(--muted);font-size:14px;margin-top:2px}.search-card{max-width:620px;padding-bottom:22px}.search-box{display:block;margin:22px}.search-box span{display:block;color:var(--muted);margin-bottom:8px}.search-box input{width:100%;min-height:52px;border:1px solid var(--line);border-radius:14px;padding:0 16px;background:#fff;color:var(--ink);outline:none}.search-box input:focus{border-color:var(--indigo);box-shadow:0 0 0 3px rgba(99,102,241,.12)}.preset-links{display:flex;flex-wrap:wrap;gap:10px;padding:0 22px}.preset-links a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 14px}.site-footer{background:var(--ink);color:#F7EFE6;margin-top:60px}.footer-inner{max-width:1160px;margin:auto;padding:48px 18px 86px}.footer-brand{display:flex;align-items:center;gap:16px;margin-bottom:34px}.footer-logo{max-height:38px;max-width:180px;object-fit:contain}.footer-brand strong,.footer-brand span{display:block}.footer-brand span{opacity:.72;font-size:13px;letter-spacing:.12em}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}.footer-grid h2{font-size:16px;color:#fff}.footer-grid a{display:block;opacity:.82;padding:4px 0}.footer-note{margin-top:34px;max-width:820px;opacity:.78}.copyright{opacity:.58;font-size:14px}.mobile-nav{display:none}a:focus-visible,button:focus-visible{outline:3px solid rgba(99,102,241,.35);outline-offset:3px}@media (max-width:820px){.chapter-bar{display:none}.site-main{padding-top:72px}.masthead-inner{grid-template-columns:64px 1fr 94px;padding:0 10px}.search-trigger{display:none}.app-link{padding:0 12px}.brand-logo{max-width:160px}.hero,.feature{grid-template-columns:1fr}.hero{min-height:auto;padding-top:22px}.tag-grid{grid-template-columns:repeat(2,1fr)}.cards-3,.grid-3{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.masonry{columns:2}.shelf-row{grid-template-columns:1fr}.book-pages{grid-template-columns:1fr}.book-pages section{border-right:0!important;border-bottom:1px solid var(--line)!important}.footer-grid{grid-template-columns:repeat(2,1fr)}.mobile-nav{position:fixed;z-index:90;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(--line);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-nav a{display:flex;align-items:center;justify-content:center;min-height:50px;color:var(--muted);font-size:14px}.mobile-nav a.active{color:var(--pink);font-weight:800}.site-footer{margin-bottom:50px}.footer-inner{padding-bottom:46px}}@media (max-width:520px){.wrap{padding:38px 16px}.tag-grid,.grid-2,.steps{grid-template-columns:1fr}.masonry{columns:1}.hero-actions{flex-direction:column;align-items:stretch}.hero-actions a{width:100%}.section-title{align-items:start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.number-row{grid-template-columns:56px 1fr}.big-no{font-size:32px}}

.app-icon{width:72px;height:72px;object-fit:contain;border-radius:18px;margin:14px auto 0;display:block}.feature>div:empty{display:none}.feature:has(>div:empty){grid-template-columns:1fr}.hero:has(.hero-media:nth-child(1)){grid-template-columns:1fr}
