:root{--paper:#FFF8F2;--white:#fff;--soft:#F3EBE3;--ink:#1A1230;--text:#2C2440;--muted:#5A5270;--faint:#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}*{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}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.wrap{width:min(var(--max),calc(100% - 32px));margin:0 auto}.site-header{position:fixed;z-index:60;top:0;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line)}.masthead{height:72px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.square-btn,.text-btn,.close-btn{min-height:44px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:12px;padding:0 15px;font:inherit;cursor:pointer}.square-btn{justify-self:start}.brand{justify-self:center;display:flex;align-items:center;min-height:44px}.brand-logo{max-height:38px;width:auto}.brand-text{font-size:22px;font-weight:800;letter-spacing:.06em;color:var(--ink)}.header-actions{justify-self:end;display:flex;gap:8px;align-items:center}.pill-link,.primary-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:999px;font-weight:700}.pill-link,.primary-btn{background:linear-gradient(135deg,#6366F1 0%,#E11D8F 55%,#D97706 100%);color:#fff}.secondary-btn{background:#fff;border:1px solid var(--line);color:var(--ink)}.chapter-bar{height:46px;background:#fff;border-top:1px solid var(--line)}.chapter-inner{height:100%;display:flex;align-items:center;justify-content:center;gap:36px}.chapter-inner a{height:100%;display:flex;align-items:center;position:relative;color:var(--muted);font-weight:700}.chapter-inner a.is-current{color:var(--ink)}.chapter-inner a.is-current:after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--pink)}.site-main{padding-top:118px}.home,.page-shell{padding-top:34px;padding-bottom:80px}.cover-section{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:34px 0 54px}.cover-copy{display:grid;grid-template-columns:42px 1fr;gap:24px}.vertical-kicker{writing-mode:vertical-rl;letter-spacing:.18em;color:var(--pink);font-weight:800}.eyebrow{display:inline-block;color:var(--indigo);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.cover-section h1,.page-hero h1{font-size:clamp(28px,4vw,34px);line-height:1.25;color:var(--ink);margin:12px 0 16px}.cover-copy p,.page-hero 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span{grid-column:2;color:var(--muted);font-size:14px}.tone-1 i{background:var(--pink)}.tone-2 i{background:var(--indigo)}.tone-3 i{background:var(--cyan)}.tone-4 i{background:var(--amber)}.wide-image{width:100%;max-height:360px;object-fit:contain;background:#fff;border-radius:20px;margin-bottom:24px}.lead-copy{max-width:850px;font-size:17px}.number-links{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}.number-links a,.big-number-grid a{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.number-links b,.big-number-grid b{font-size:28px;color:var(--pink);display:block}.masonry-three{display:grid;grid-template-columns:1fr 1.15fr .9fr;gap:18px;align-items:start}.masonry-three article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow)}.masonry-three article:nth-child(2){margin-top:34px}.masonry-three h3{font-size:23px;color:var(--ink)}.masonry-three a,.text-link,.end-grid a{color:var(--pink);font-weight:800}.split-section,.app-home{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.step-list{display:grid;gap:12px}.step-list>div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.step-list b{color:var(--ink)}.step-list p{margin:4px 0 0;color:var(--muted)}.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.theme-grid a{padding:24px;border-radius:18px;background:#fff;border:1px solid var(--line);font-weight:800;color:var(--ink)}.theme-grid a:nth-child(2n){transform:translateY(12px)}.theme-grid small{display:block;color:var(--muted);font-weight:500;margin-top:4px}.shelf-lines{display:grid;border-top:1px solid var(--line)}.shelf-lines a{display:grid;grid-template-columns:1fr 2fr;gap:20px;padding:18px 4px;border-bottom:1px solid var(--line)}.shelf-lines b{color:var(--ink)}.shelf-lines 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img{max-height:360px;width:100%;object-fit:contain;background:#fff;border-radius:20px}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:28px;align-items:start}.article-main{display:grid;gap:16px}.content-section{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.content-section h2{margin:0 0 8px;color:var(--ink);font-size:22px}.content-section p{margin:10px 0;color:var(--text)}.side-card{position:sticky;top:142px;background:var(--soft);border-radius:18px;padding:18px}.side-card h2{font-size:17px;color:var(--ink)}.side-card a{display:block;padding:9px 0;border-bottom:1px solid var(--line);color:var(--muted)}.faq-list{display:grid;gap:14px}.faq-item{display:grid;grid-template-columns:54px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px}.faq-item>span{font-size:24px;color:var(--pink);font-weight:900}.faq-item h2{margin:0;color:var(--ink);font-size:20px}.faq-item p{margin:8px 0 0}.site-footer{background:var(--ink);color:#F7EFE6;padding:48px 0 22px}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:26px}.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.footer-logo{max-height:34px;width:auto}.footer-brand p{color:#d8cfdf;max-width:360px}.footer-grid h3{font-size:15px;margin:0 0 12px;color:#fff}.footer-grid a{display:block;color:#d8cfdf;padding:4px 0}.footer-bottom{padding-top:24px;margin-top:28px;border-top:1px solid rgba(255,255,255,.12);color:#cfc4d8;font-size:13px}.overlay{position:fixed;z-index:80;inset:0;background:rgba(26,18,48,.45);opacity:0;transition:.18s;pointer-events:none}.overlay.is-open{opacity:1;pointer-events:auto}.modal{position:fixed;z-index:90;left:50%;top:50%;transform:translate(-50%,-48%);width:min(840px,calc(100% - 32px));max-height:86vh;overflow:auto;background:var(--paper);border-radius:22px;box-shadow:0 24px 70px 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span{font-weight:800;color:var(--ink)}.quick-links{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:0 18px 22px}.quick-links a{background:var(--soft);border-radius:999px;padding:11px 14px;text-align:center}.mobile-nav{display:none}
button:focus-visible,a: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)}.masonry-three{grid-template-columns:1fr 1fr}.masonry-three article:nth-child(3){grid-column:1/-1}.big-number-grid{grid-template-columns:repeat(3,1fr)}.end-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:2fr 1fr 1fr}.footer-grid>div:nth-child(n+4){margin-top:10px}.article-grid{grid-template-columns:1fr}.side-card{position:static;display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.side-card h2{grid-column:1/-1}.side-card a{border:0;background:var(--soft);border-radius:10px;padding:8px 10px}}
@media(max-width:720px){.site-header{background:var(--paper)}.chapter-bar{display:none}.site-main{padding-top:72px;padding-bottom:58px}.masthead{grid-template-columns:1fr auto 1fr;gap:8px}.search-trigger{display:none}.pill-link{padding:0 14px;font-size:14px}.brand-logo{max-height:32px}.cover-section{grid-template-columns:1fr;padding-top:20px}.cover-copy{grid-template-columns:28px 1fr;gap:12px}.cover-media{order:-1}.paper-slot{min-height:180px}.number-links{grid-template-columns:repeat(2,1fr)}.masonry-three,.split-section,.app-home{grid-template-columns:1fr}.masonry-three article:nth-child(2){margin-top:0}.masonry-three article:nth-child(3){grid-column:auto}.theme-grid{grid-template-columns:repeat(2,1fr)}.theme-grid a:nth-child(2n){transform:none}.big-number-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.book-spread{grid-template-columns:1fr}.book-page:first-child{border-right:0;border-bottom:1px solid var(--line)}.modal{width:calc(100% - 24px);max-height:88vh}.quick-links{grid-template-columns:repeat(2,1fr)}.mobile-nav{position:fixed;z-index:70;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--line)}.mobile-nav a{display:flex;align-items:center;justify-content:center;min-height:50px;font-size:13px;color:var(--muted)}.mobile-nav a.is-current{color:var(--pink);font-weight:800}.site-footer{padding-bottom:80px}.shelf-lines a{grid-template-columns:1fr}.faq-item{grid-template-columns:40px 1fr;padding:18px}.side-card{grid-template-columns:repeat(2,1fr)}}
@media(max-width:430px){.wrap{width:min(var(--max),calc(100% - 32px))}.square-btn{padding:0 10px}.pill-link{padding:0 11px}.brand-text{font-size:18px}.tag-grid,.theme-grid{grid-template-columns:1fr}.big-number-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr}.footer-grid>div{margin-top:0!important}.side-card{grid-template-columns:1fr 1fr}}