:root{
    --paper:#FFF8F2;--surface:#FFFFFF;--soft:#F3EBE3;--ink:#1A1230;--body:#2C2440;--muted:#5A5270;--quiet:#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);--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","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}img{display:block;max-width:100%;height:auto}button{font:inherit;color:inherit}.masthead{position:fixed;z-index:80;top:0;left:0;right:0;height:72px;background:rgba(255,248,242,.97);border-bottom:1px solid var(--border);backdrop-filter:blur(12px)}.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:16px}.square-action{width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:14px;display:inline-grid;place-items:center;cursor:pointer;font-size:22px;box-shadow:0 8px 18px rgba(26,18,48,.05)}.brand{justify-self:center;display:flex;align-items:center;min-width:120px;min-height:44px}.brand-logo-img{max-height:38px;width:auto;object-fit:contain}.brand-logo-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}.app-pill,.pill-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border-radius:999px;background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%);color:#fff;font-weight:800;box-shadow:0 10px 24px rgba(99,102,241,.18)}.chapter-band{position:fixed;z-index:70;top:72px;left:0;right:0;height:46px;background:#fff;border-bottom:1px solid var(--border)}.chapter-inner{max-width:var(--max);height:100%;margin:auto;padding:0 20px;display:flex;justify-content:center;align-items:center;gap:38px;white-space:nowrap}.chapter-inner a{height:46px;display:flex;align-items:center;font-weight:700;color:var(--muted);position:relative}.chapter-inner a.is-current{color:var(--ink)}.chapter-inner a.is-current:after{content:"";position:absolute;left:12%;right:12%;bottom:0;height:3px;background:var(--pink);border-radius:3px 3px 0 0}.site-main{padding-top:146px;min-height:70vh}.page-shell,.home-section,.cover{max-width:var(--max);margin:0 auto;padding-left:20px;padding-right:20px}.page-hero{padding:38px 0 26px}.eyebrow{font-size:13px;letter-spacing:.16em;font-weight:900;color:var(--pink);text-transform:uppercase}.page-hero h1,.cover h1{margin:.4rem 0 1rem;color:var(--ink);font-size:clamp(28px,4vw,34px);line-height:1.25;letter-spacing:-.02em}.lead{font-size:17px;color:var(--muted);max-width:780px}.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:22px}.section-title h2{margin:0;color:var(--ink);font-size:26px;line-height:1.25}.section-title p{margin:0;color:var(--quiet);font-size:14px}.cover{padding-top:42px;padding-bottom:54px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);gap:42px;align-items:center}.vertical-mark{writing-mode:vertical-rl;letter-spacing:.2em;font-size:13px;color:var(--pink);font-weight:900;float:left;margin:5px 22px 0 0}.cover-copy p{font-size:17px;color:var(--muted);max-width:620px}.text-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.text-link{min-height:44px;display:inline-flex;align-items:center;padding:0 18px;border-radius:999px;background:#fff;border:1px solid var(--border);font-weight:800;color:var(--ink)}.text-link.primary{background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%);border-color:transparent;color:#fff}.media-slot{min-height:180px;border-radius:22px;background:linear-gradient(135deg,#F3EBE3,#FFFFFF);border:1px solid var(--border);overflow:hidden;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}.cover .media-slot{min-height:260px;max-height:360px}.content-image{width:100%;height:auto;max-height:420px;object-fit:cover}.home-section{padding-top:38px;padding-bottom:38px}.tag-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tag-card,.content-card,.policy-card,.faq-item,.step-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px;box-shadow:0 10px 25px rgba(26,18,48,.05)}.tag-card{min-height:150px}.tag-card h3,.content-card h3,.policy-card h3,.step-card h3{margin:.2rem 0 .55rem;color:var(--ink);font-size:19px}.tag-card p,.content-card p,.policy-card p,.step-card p{margin:.25rem 0 .8rem;color:var(--muted)}.dot{width:10px;height:10px;border-radius:50%;display:inline-block;margin-right:8px}.dot.pink{background:var(--pink)}.dot.indigo{background:var(--indigo)}.dot.cyan{background:var(--cyan)}.dot.amber{background:var(--amber)}.small-link{font-weight:800;color:var(--indigo)}.feature-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.68fr);gap:28px;align-items:stretch}.chapter-list{display:grid;gap:10px;margin:20px 0}.chapter-row{display:grid;grid-template-columns:52px 1fr auto;gap:14px;align-items:center;padding:14px 0;border-top:1px solid var(--border)}.chapter-row b{font-size:25px;color:var(--pink)}.chapter-row strong{color:var(--ink)}.uneven-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px;align-items:start}.uneven-grid .content-card:nth-child(2){margin-top:34px}.uneven-grid .content-card:nth-child(3){margin-top:12px}.card-image{margin:-20px -20px 16px}.card-image .media-slot{border-radius:18px 18px 0 0;box-shadow:none;border-left:0;border-right:0;border-top:0}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.step-number{font-size:30px;font-weight:900;line-height:1;color:var(--indigo)}.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:start}.theme-grid .content-card:nth-child(2n){min-height:220px}.shelf-list{display:grid;gap:12px}.shelf-row{display:grid;grid-template-columns:120px 1fr auto;gap:18px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px}.shelf-row .shelf-label{font-weight:900;color:var(--ink)}.shelf-row p{margin:0;color:var(--muted)}.rank-list{display:grid;gap:14px}.rank-item{display:grid;grid-template-columns:82px 1fr;gap:18px;align-items:start;padding:22px;background:#fff;border:1px solid var(--border);border-radius:18px}.rank-no{font-size:44px;line-height:1;font-weight:950}.rank-item:nth-child(1) .rank-no{color:var(--pink)}.rank-item:nth-child(2) .rank-no{color:var(--indigo)}.rank-item:nth-child(3) .rank-no{color:var(--cyan)}.rank-item:nth-child(4) .rank-no{color:var(--amber)}.rank-item:nth-child(5) .rank-no{color:var(--mint)}.rank-item h3{margin:0 0 6px;color:var(--ink)}.rank-item p{margin:0;color:var(--muted)}.timeline{position:relative;margin-left:10px;padding-left:34px}.timeline:before{content:"";position:absolute;left:8px;top:10px;bottom:10px;width:2px;background:linear-gradient(var(--pink),var(--indigo),var(--cyan),var(--amber))}.time-node{position:relative;padding:0 0 28px}.time-node:before{content:"";position:absolute;left:-34px;top:6px;width:14px;height:14px;border-radius:50%;background:#fff;border:4px solid var(--pink)}.time-node:nth-child(2):before{border-color:var(--indigo)}.time-node:nth-child(3):before{border-color:var(--cyan)}.time-node:nth-child(4):before{border-color:var(--amber)}.time-node h3{margin:0;color:var(--ink)}.status{display:inline-flex;margin-top:8px;padding:4px 10px;border-radius:999px;background:var(--soft);font-size:13px;font-weight:800;color:var(--ink)}.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.article-block{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px}.article-block h2,.article-block h3{color:var(--ink);margin-top:0}.article-block p{margin:.6rem 0;color:var(--body)}.article-block ul{padding-left:1.25em;color:var(--body)}.long-copy{max-width:840px;margin:0 auto}.long-copy section{padding:24px 0;border-top:1px solid var(--border)}.long-copy h2{color:var(--ink);font-size:24px;margin:0 0 12px}.editor-note{padding:16px 18px;border-left:4px solid var(--pink);background:#fff;border-radius:0 14px 14px 0;color:var(--muted)}.policy-stack{display:grid;gap:16px}.faq-list{display:grid;gap:14px}.faq-item h2{font-size:19px;margin:0 0 8px;color:var(--ink)}.faq-item p{margin:0;color:var(--body)}.site-footer{margin-top:70px;background:var(--ink);color:#F7EFE6;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:16px;padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.12)}.footer-logo{display:flex;align-items:center;min-width:100px;min-height:44px}.footer-logo .brand-logo-text{color:#fff}.footer-brand strong{display:block;font-size:20px}.footer-brand span{display:block;color:rgba(247,239,230,.7);font-size:13px;letter-spacing:.12em}.footer-directory{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:28px 0}.footer-group h2{font-size:15px;margin:0 0 12px;color:#fff}.footer-group a{display:block;color:rgba(247,239,230,.78);padding:4px 0}.footer-note{color:rgba(247,239,230,.72);max-width:860px}.copyright{color:rgba(247,239,230,.55);font-size:13px;margin-bottom:0}.overlay{position:fixed;inset:0;z-index:100;background:rgba(26,18,48,.46);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:110;left:50%;top:50%;transform:translate(-50%,-46%);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;background:#fff;border:1px solid var(--border);box-shadow:0 30px 80px rgba(26,18,48,.22)}.book-menu.is-open,.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,-50%)}.book-menu{width:min(840px,calc(100vw - 36px));max-height:calc(100vh - 44px);border-radius:22px;overflow:auto}.book-menu-top,.search-head{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;border-bottom:1px solid var(--border)}.book-brand{display:flex;align-items:center;gap:12px;color:var(--ink)}.book-brand .brand-logo-img{max-height:30px}.close-button{width:44px;height:44px;border:0;background:var(--soft);border-radius:50%;cursor:pointer;font-size:26px}.book-pages{display:grid;grid-template-columns:1fr 1fr}.book-page{padding:22px 24px}.book-page:first-child{border-right:1px solid var(--border)}.menu-group+ .menu-group{margin-top:26px}.menu-group h2{font-size:15px;color:var(--pink);letter-spacing:.1em;margin:0 0 10px}.menu-entry{display:block;padding:11px 0;border-top:1px solid var(--border)}.menu-entry strong{display:block;color:var(--ink)}.menu-entry span{display:block;color:var(--quiet);font-size:13px;line-height:1.6}.search-layer{width:min(620px,calc(100vw - 32px));border-radius:22px;padding-bottom:22px}.search-head h2{font-size:22px;margin:.15rem 0 0;color:var(--ink)}.search-box{margin:22px;min-height:54px;border:1px solid var(--border);background:var(--paper);border-radius:16px;display:flex;align-items:center;gap:12px;padding:0 16px;color:var(--quiet)}.preset-links{display:flex;flex-wrap:wrap;gap:10px;padding:0 22px}.preset-links a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--border);font-weight:800;color:var(--ink)}.mobile-bottom{display:none}.square-action:hover,.square-action:focus-visible,.text-link:hover,.text-link:focus-visible,.preset-links a:hover,.preset-links a:focus-visible,.menu-entry:hover,.menu-entry:focus-visible,.chapter-inner a:hover,.chapter-inner a:focus-visible,.footer-group a:hover,.footer-group a:focus-visible,.app-pill:hover,.app-pill:focus-visible{outline:3px solid rgba(225,29,143,.18);outline-offset:2px}.callout{background:linear-gradient(135deg,rgba(99,102,241,.09),rgba(225,29,143,.08),rgba(217,119,6,.08));border:1px solid var(--border);border-radius:22px;padding:26px}.mini-label{font-weight:900;color:var(--pink)}.contact-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.app-showcase{display:grid;grid-template-columns:minmax(0,.9fr) minmax(320px,1.1fr);gap:30px;align-items:center}.icon-wrap{width:74px;height:74px;border-radius:18px;background:#fff;border:1px solid var(--border);display:grid;place-items:center;overflow:hidden;margin-bottom:14px}.icon-wrap img{width:100%;height:100%;object-fit:cover}.install-list{counter-reset:item;display:grid;gap:14px}.install-list article{counter-increment:item;background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px}.install-list article:before{content:counter(item,decimal-leading-zero);font-size:30px;font-weight:950;color:var(--indigo)}
@media (max-width:900px){.tag-grid{grid-template-columns:repeat(2,1fr)}.feature-split,.cover,.app-showcase{grid-template-columns:1fr}.uneven-grid{grid-template-columns:1fr 1fr}.uneven-grid .content-card:nth-child(2),.uneven-grid .content-card:nth-child(3){margin-top:0}.steps{grid-template-columns:1fr 1fr}.theme-grid{grid-template-columns:1fr 1fr}.article-grid{grid-template-columns:1fr}.footer-directory{grid-template-columns:1fr 1fr}.cover .media-slot{max-height:none}}
@media (max-width:720px){.masthead{height:72px}.masthead-inner{padding:0 16px;grid-template-columns:44px 1fr auto;gap:10px}.brand{min-width:0}.brand-logo-img{max-height:32px}.brand-logo-text{font-size:18px;letter-spacing:.05em}.mast-actions{gap:0}.desktop-search{display:none}.app-pill{min-width:72px;padding:0 12px;font-size:14px}.chapter-band{display:none}.site-main{padding-top:96px;padding-bottom:74px}.page-shell,.home-section,.cover{padding-left:16px;padding-right:16px}.cover{padding-top:26px;gap:22px}.vertical-mark{float:none;writing-mode:horizontal-tb;margin:0 0 8px}.cover-copy p,.lead{font-size:16px}.tag-grid,.uneven-grid,.theme-grid,.steps,.contact-cards{grid-template-columns:1fr}.section-title{align-items:flex-start;flex-direction:column}.shelf-row{grid-template-columns:1fr;gap:6px}.rank-item{grid-template-columns:64px 1fr}.rank-no{font-size:36px}.footer-directory{grid-template-columns:1fr 1fr;gap:18px}.site-footer{padding-bottom:calc(92px + env(safe-area-inset-bottom))}.book-menu{width:calc(100vw - 24px);max-height:calc(100vh - 24px)}.book-pages{display:block}.book-page{padding:10px 18px}.book-page:first-child{border-right:0}.book-page+.book-page{border-top:1px solid var(--border)}.mobile-bottom{display:grid;position:fixed;z-index:60;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(--border);grid-template-columns:repeat(5,1fr);box-shadow:0 -8px 24px rgba(26,18,48,.06)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;font-size:13px;font-weight:800;color:var(--muted)}.mobile-bottom a.is-current{color:var(--pink)}.overlay{z-index:100}.book-menu,.search-layer{z-index:110}.media-slot{min-height:150px}.page-hero{padding-top:20px}.article-block{padding:20px}.chapter-row{grid-template-columns:46px 1fr}.chapter-row a{grid-column:2}.search-layer{width:calc(100vw - 24px)}}
@media (max-width:420px){.footer-directory{grid-template-columns:1fr}.masthead-inner{gap:6px}.app-pill{padding:0 10px}.tag-card{min-height:0}.text-actions{flex-direction:column}.text-link{width:100%;justify-content:center}}