:root{--bg:#F6F7F5;--surface:#FFFFFF;--deep:#12263A;--title:#14263A;--text:#293847;--muted:#596B78;--primary:#176B83;--accent:#D59B58;--line:#DCE4E4;--radius:12px;--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.72;overflow-x:hidden}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible{outline:3px solid rgba(23,107,131,.28);outline-offset:3px}img{display:block;max-width:100%;height:auto}.site-header{position:relative;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}.header-inner{max-width:var(--max);min-height:72px;margin:auto;padding:0 28px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;min-width:110px;color:var(--deep);font-weight:800}.brand-mark{height:32px;width:auto;object-fit:contain}.brand-text{font-size:21px;letter-spacing:.08em}.desktop-nav{display:flex;align-items:center;gap:8px}.desktop-nav a,.app-link{position:relative;display:inline-flex;min-height:44px;align-items:center;padding:0 12px;color:var(--title);font-weight:650}.desktop-nav a.is-active,.desktop-nav a:hover,.app-link.is-active{color:var(--primary);text-decoration:none}.desktop-nav a.is-active:after,.app-link.is-active:after{content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;background:var(--primary)}.header-actions{justify-self:end;display:flex;align-items:center;gap:6px}.menu-button{min-height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--title);padding:0 14px;font:inherit;font-weight:700;cursor:pointer}.menu-button:hover{border-color:#aac5cc}.nav-panel{position:absolute;left:50%;top:calc(100% + 8px);transform:translateX(-50%);width:min(960px,calc(100vw - 56px));background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 20px 50px rgba(18,38,58,.15);padding:22px}.nav-panel[hidden]{display:none}.nav-panel-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.nav-group h2{font-size:14px;text-transform:none;letter-spacing:.08em;color:var(--muted);margin:0 0 10px}.nav-group a{display:grid;grid-template-columns:1fr;gap:1px;padding:8px 0;border-bottom:1px solid #edf1f1;color:var(--title)}.nav-group a:hover{text-decoration:none;color:var(--primary)}.nav-group span{font-size:13px;color:var(--muted);font-weight:400}main{min-height:60vh}.container{max-width:var(--max);margin:0 auto;padding-left:28px;padding-right:28px}.page-hero{padding:52px 0 34px;border-bottom:1px solid var(--line)}.eyebrow{margin:0 0 8px;color:var(--primary);font-weight:750;font-size:14px;letter-spacing:.08em}.page-hero h1{font-size:clamp(28px,3.1vw,34px);line-height:1.2;color:var(--title);margin:0 0 16px;max-width:860px}.summary{max-width:820px;color:var(--muted);font-size:17px;margin:0}.breadcrumbs{display:flex;gap:8px;align-items:center;margin-top:18px;font-size:14px;color:var(--muted)}.breadcrumbs a{color:var(--muted)}.article-shell{max-width:var(--max);margin:0 auto;padding:48px 28px 64px;display:grid;grid-template-columns:minmax(0,820px) 260px;gap:48px;align-items:start}.article-content{min-width:0}.prose-section{padding:0 0 30px;margin:0 0 30px;border-bottom:1px solid var(--line)}.prose-section:last-child{border-bottom:0}.prose-section h2{font-size:24px;line-height:1.35;color:var(--title);margin:0 0 12px}.prose-section p{margin:0;max-width:74ch}.side-card{position:sticky;top:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.side-card h2{font-size:18px;margin:0 0 10px;color:var(--title)}.side-card a{display:block;padding:8px 0;border-bottom:1px solid #edf1f1}.side-card a:last-child{border-bottom:0}.media-frame{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px;margin:6px 0 30px;display:flex;justify-content:center;align-items:center;max-height:230px;overflow:visible}.media-frame img{width:auto;max-width:100%;height:auto;max-height:208px;object-fit:contain;object-position:center}.media-frame.portrait{max-height:400px}.media-frame.portrait img{max-height:378px}.related{max-width:var(--max);margin:0 auto;padding:0 28px 64px}.related h2{font-size:22px;color:var(--title);margin:0 0 16px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.related-grid a{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;color:var(--title)}.related-grid a:hover{text-decoration:none;border-color:#b9cbcf}.related-grid strong,.related-grid span{display:block}.related-grid span{margin-top:5px;color:var(--muted);font-size:14px}.hero-home{padding:56px 0 60px}.hero-home-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.9fr);gap:46px;align-items:center}.hero-home h1{font-size:clamp(32px,4vw,44px);line-height:1.15;color:var(--title);margin:0 0 18px}.hero-home p{font-size:18px;max-width:680px;margin:0 0 24px}.actions{display:flex;gap:10px;flex-wrap:wrap}.button{display:inline-flex;min-height:44px;align-items:center;padding:0 18px;border-radius:10px;background:var(--deep);color:#fff;font-weight:700}.button.secondary{background:#fff;color:var(--deep);border:1px solid var(--line)}.button:hover{text-decoration:none}.cover-frame{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;align-items:center;justify-content:center;max-height:320px}.cover-frame img{width:auto;max-width:100%;height:auto;max-height:294px;object-fit:contain}.home-section{padding:56px 0;border-top:1px solid var(--line)}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:24px}.section-head h2{font-size:26px;color:var(--title);margin:0}.section-head p{margin:0;color:var(--muted);max-width:660px}.index-strip{display:grid;grid-template-columns:1.2fr repeat(4,1fr);gap:12px;align-items:stretch}.editor-note{background:var(--deep);color:white;border-radius:var(--radius);padding:18px}.editor-note strong{display:block;margin-bottom:6px}.compact-link{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;color:var(--title)}.compact-link strong,.compact-link span{display:block}.compact-link span{font-size:14px;color:var(--muted);margin-top:5px}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.topic-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;color:var(--title)}.topic-card small{color:var(--accent);font-weight:800}.topic-card h3{font-size:19px;margin:6px 0}.topic-card p{color:var(--muted);margin:0}.split{display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:center}.split.reverse{grid-template-columns:5fr 7fr}.split-text h2{font-size:26px;color:var(--title);margin:0 0 12px}.link-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.link-list a{display:inline-flex;min-height:44px;align-items:center;border:1px solid var(--line);background:#fff;border-radius:999px;padding:0 14px}.two-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}.feature-card h3{font-size:21px;color:var(--title);margin:0 0 10px}.feature-card p{margin:0 0 16px}.reading-list{display:grid;grid-template-columns:1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.reading-list a{display:grid;grid-template-columns:48px 1fr auto;gap:18px;align-items:start;padding:20px;border-bottom:1px solid var(--line);color:var(--title)}.reading-list a:last-child{border-bottom:0}.reading-list a:hover{text-decoration:none;background:#fafcfc}.reading-num{color:var(--accent);font-weight:800}.reading-list span{color:var(--muted);font-size:14px}.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.trust-item{padding:20px;border-left:3px solid var(--accent);background:#fff}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.faq-item h2{font-size:19px;margin:0 0 8px;color:var(--title)}.faq-item p{margin:0}.site-footer{background:#eef2f1;border-top:1px solid var(--line);padding:44px 0 0}.footer-inner{max-width:var(--max);margin:auto;padding:0 28px 34px;display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}.footer-brand p{color:var(--muted);font-size:14px;max-width:300px}.footer-links h2{font-size:15px;margin:0 0 10px;color:var(--title)}.footer-links a{display:block;color:var(--muted);font-size:14px;padding:4px 0}.footer-note{border-top:1px solid var(--line);max-width:var(--max);margin:auto;padding:18px 28px 24px;color:var(--muted);font-size:13px}.mobile-bottom{display:none}
@media(max-width:980px){.header-inner{grid-template-columns:1fr auto;min-height:64px;padding:0 22px}.desktop-nav{display:none}.header-actions{gap:2px}.menu-button{font-size:0}.menu-button:after{content:'栏目';font-size:16px}.nav-panel{position:static;transform:none;width:100%;border:0;border-top:1px solid var(--line);border-radius:0;box-shadow:none;padding:18px 22px;background:#fff}.nav-panel-inner{grid-template-columns:1fr 1fr;gap:22px}.article-shell{grid-template-columns:1fr;padding:38px 22px 48px}.side-card{position:static}.related{padding:0 22px 48px}.index-strip{grid-template-columns:1fr 1fr}.editor-note{grid-column:1/-1}.topic-grid{grid-template-columns:1fr 1fr}.split,.split.reverse{grid-template-columns:1fr 1fr;gap:26px}.footer-inner{padding:0 22px 28px;grid-template-columns:1.4fr 1fr 1fr}.footer-brand{grid-row:span 2}.footer-note{padding-left:22px;padding-right:22px}}
@media(max-width:680px){body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}.container{padding-left:16px;padding-right:16px}.header-inner{padding:0 16px}.brand-mark{height:28px}.app-link{padding:0 8px}.nav-panel{padding:14px 16px}.nav-panel-inner{grid-template-columns:1fr;gap:16px}.page-hero{padding:36px 0 26px}.page-hero h1{font-size:28px}.summary{font-size:16px}.article-shell{padding:32px 16px 40px;gap:24px}.prose-section{padding-bottom:24px;margin-bottom:24px}.prose-section h2{font-size:21px}.related{padding:0 16px 40px}.related-grid{grid-template-columns:1fr}.hero-home{padding:38px 0 42px}.hero-home-grid{grid-template-columns:1fr;gap:26px}.hero-home h1{font-size:30px}.hero-home p{font-size:16px}.cover-frame{max-height:260px}.cover-frame img{max-height:236px}.home-section{padding:38px 0}.section-head{display:block}.section-head h2{font-size:23px;margin-bottom:8px}.index-strip,.topic-grid,.two-cards,.trust-grid{grid-template-columns:1fr}.editor-note{grid-column:auto}.split,.split.reverse{grid-template-columns:1fr}.split .media-frame,.split.reverse .media-frame{order:2}.reading-list a{grid-template-columns:36px 1fr;gap:12px}.reading-list a>span:last-child{grid-column:2}.media-frame{max-height:210px}.media-frame img{max-height:188px}.media-frame.portrait{max-height:320px}.media-frame.portrait img{max-height:298px}.footer-inner{padding:0 16px 24px;grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1;grid-row:auto}.footer-note{padding:16px 16px 20px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:50;display:grid;grid-template-columns:repeat(5,1fr);min-height:58px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line);box-shadow:0 -5px 18px rgba(18,38,58,.08)}.mobile-bottom a{display:flex;min-height:58px;align-items:center;justify-content:center;color:var(--muted);font-size:13px;font-weight:650}.mobile-bottom a[aria-current="page"]{color:var(--primary)}.mobile-bottom a:hover{text-decoration:none}}