 :root{color-scheme:dark;--bg:#10151D;--surface:#19212C;--raised:#222C38;--title:#F7F5F2;--body:#E0E4E8;--muted:#BBC4CC;--accent:#FF6B7D;--blue:#9CC5DB;--line:#34414F}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:0;background:var(--bg);color:var(--body);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}a:active,button:active{opacity:.8}a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:3px}button{font:inherit;cursor:pointer}img{display:block;max-width:100%}.container{width:min(1200px,calc(100% - 64px));margin-inline:auto}.skip{position:absolute;top:-100px;z-index:50;background:var(--title);color:var(--bg);padding:8px 16px}.skip:focus{top:8px}.site-header{position:relative;z-index:10;background:var(--surface);border-bottom:1px solid var(--line)}.brand-bar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:inline-flex;align-items:center;gap:12px;min-width:0}.brand img{max-height:40px;width:auto;max-width:140px;object-fit:contain}.brand-mark{display:grid;place-items:center;width:40px;height:40px;background:var(--accent);color:#10151D;border-radius:8px;font-size:17px;font-weight:900}.brand-word{font-size:21px;font-weight:800;line-height:1.2;color:var(--title);white-space:nowrap}.brand-word small{display:block;font-size:10px;letter-spacing:.14em;color:var(--muted);margin-top:5px}.brand-actions{display:flex;align-items:center;gap:18px}.guide-link{font-size:14px;color:var(--muted)}.menu-toggle,.menu-close{min-height:44px;min-width:74px;border:1px solid var(--line);background:var(--raised);color:var(--title);padding:7px 14px;border-radius:8px}.menu-toggle span{color:var(--accent);margin-left:8px}.primary-nav{border-top:1px solid var(--line)}.nav-items{height:48px;display:flex;align-items:stretch;gap:32px}.nav-items a{display:inline-flex;align-items:center;border-bottom:2px solid transparent;font-size:14px;white-space:nowrap}.nav-items a[aria-current=page]{color:var(--accent);border-color:var(--accent)}.menu-panel{position:absolute;left:0;right:0;top:100%;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 18px 30px #0007;max-height:min(75vh,720px);overflow-y:auto}.menu-panel[hidden]{display:none!important}.menu-inner{padding-block:24px 30px}.menu-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}.menu-head strong{font-size:20px;color:var(--title)}.menu-groups{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}.menu-groups h2{font-size:16px;margin:0 0 12px;color:var(--blue)}.menu-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 18px}.menu-links a{padding:8px 0;font-size:14px}.menu-links a[aria-current=page]{color:var(--accent)}.menu-groups section:nth-child(n+2) .menu-links{grid-template-columns:1fr}main{min-height:60vh}.section{margin-block:68px}.eyebrow{display:inline-block;color:var(--blue);font-size:13px;letter-spacing:.13em;font-weight:700}.section-title{font-size:26px;line-height:1.35;margin:9px 0 20px;color:var(--title)}h1,h2,h3{color:var(--title);line-height:1.35;overflow-wrap:anywhere}h1{font-size:36px;margin:12px 0}h2{font-size:25px}h3{font-size:20px}p{margin:0 0 16px;overflow-wrap:anywhere}.lede{max-width:850px;font-size:17px;color:var(--body);line-height:1.9}.editor-hero{padding-top:28px}.hero-top{font-size:13px;color:var(--muted);letter-spacing:.13em;display:flex;align-items:center;gap:12px;margin-bottom:16px}.hero-top:before{content:"";width:20px;height:3px;background:var(--accent)}.visual{width:100%;min-width:0;aspect-ratio:16/9;background:var(--raised);overflow:hidden;border:1px solid var(--line);border-radius:12px;display:flex;justify-content:center;align-items:center}.visual img{height:100%;width:100%;object-fit:contain;object-position:center}.visual-fallback{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(120deg,#222C38,#19212C);padding:24px;text-align:center;position:relative}.visual-fallback:before{content:"";width:38%;height:80%;border:1px solid #566778;border-radius:60% 40% 55% 45%;position:absolute;right:-4%;top:10%;transform:rotate(22deg);opacity:.6}.visual-fallback span{position:relative;color:var(--title);font-size:clamp(18px,2.6vw,32px);font-weight:750;letter-spacing:.06em}.hero-visual{aspect-ratio:4/1;max-height:320px}.hero-visual .visual-fallback{background:linear-gradient(110deg,#1e3544,#222C38 55%,#3b2c39)}.hero-copy{padding-top:26px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.action{display:inline-flex;min-height:44px;align-items:center;justify-content:center;border:1px solid var(--accent);border-radius:8px;padding:8px 18px;font-weight:650;color:var(--title)}.action:first-child{background:var(--accent);color:#10151D}.action:hover{background:var(--title);color:var(--bg);border-color:var(--title)}.grid{display:grid;gap:20px;min-width:0}.grid>*{min-width:0}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.featured-grid{grid-template-columns:1.4fr 1fr}.stack{display:grid;gap:20px}.card{min-width:0;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:12px}.card h3{margin:0 0 9px}.card p{color:var(--muted)}.card .visual{margin-bottom:20px;aspect-ratio:16/9}.card a.more,.text-link{display:inline-flex;min-height:44px;align-items:center;color:var(--accent);font-weight:650}.topic-card{border-top:2px solid var(--line);padding:22px 16px 14px 0}.topic-card h3{font-size:19px;margin:0 0 12px}.topic-card p{color:var(--muted)}.topic-card a{color:var(--accent);font-weight:650}.feature-card .visual{aspect-ratio:16/8}.feature-card ul{padding-left:22px;color:var(--muted)}.feature-card li{margin:8px 0}.service-links{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.service-links a{border:1px solid var(--line);background:var(--surface);padding:15px 8px;text-align:center;border-radius:8px}.promise{max-width:920px;margin:25px 0 0;color:var(--muted)}.page-header{padding-top:50px;padding-bottom:26px;border-bottom:1px solid var(--line)}.page-header .lede{margin-bottom:0}.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:48px;margin-block:38px 80px}.page-article{min-width:0}.page-article>.visual{max-height:260px;aspect-ratio:16/6;margin-bottom:38px}.prose-section{margin-bottom:42px}.prose-section h2{margin:0 0 18px;padding-bottom:12px;border-bottom:1px solid var(--line)}.prose-section p{margin-bottom:17px;line-height:1.95}.section-number{font-size:13px;color:var(--accent);letter-spacing:.15em;font-weight:800;margin-bottom:8px}.aside-box{position:sticky;top:24px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:22px}.aside-box h2{font-size:17px;margin:0 0 12px}.aside-box a{display:block;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}.aside-box a:last-child{border:0}.reading-next{border-top:1px solid var(--line);padding-top:24px;margin-top:24px}.reading-next h2{font-size:19px}.reading-next a{color:var(--accent);margin-right:20px;display:inline-flex;min-height:44px;align-items:center}.faq-list{max-width:900px;margin:38px auto 78px}.faq-item{border-bottom:1px solid var(--line);padding:24px 0}.faq-item h2{font-size:20px;margin:0 0 12px}.faq-item p{color:var(--body);line-height:1.9}.site-footer{background:var(--surface);border-top:1px solid var(--line);padding-top:50px}.footer-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px}.footer-layout p{max-width:460px;color:var(--muted);margin-top:18px}.footer-brand{font-size:22px;font-weight:800;color:var(--title)}.footer-brand small{font-size:11px;color:var(--muted);margin-left:8px}.footer-layout nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.footer-layout nav a{font-size:14px;min-height:44px;display:flex;align-items:center}.copyright{border-top:1px solid var(--line);margin-top:32px;padding-block:18px;font-size:13px;color:var(--muted)}.mobile-bottom{display:none}@media(max-width:1050px){.nav-items{gap:18px}.container{width:calc(100% - 48px)}.page-layout{gap:24px;grid-template-columns:minmax(0,1fr) 215px}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.container{width:calc(100% - 32px)}.brand-bar{height:60px}.brand-word{font-size:18px}.brand-actions{gap:10px}.guide-link{display:none}.primary-nav{display:none}.menu-panel{position:absolute;top:100%;max-height:calc(100dvh - 60px - 64px);overflow:auto}.menu-groups{display:block}.menu-groups section{margin-bottom:20px}.menu-groups section:nth-child(n+2) .menu-links{grid-template-columns:repeat(2,minmax(0,1fr))}.menu-links{gap:3px 12px}.section{margin-block:42px}.grid-3,.grid-2,.grid-4,.featured-grid{grid-template-columns:1fr}.service-links{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-visual{aspect-ratio:16/7;max-height:220px}h1{font-size:28px}h2,.section-title{font-size:23px}.page-layout{display:block;margin-block:26px 48px}.page-header{padding-top:30px}.page-aside{margin-top:24px}.aside-box{position:static}.visual-fallback span{font-size:20px}.footer-layout{grid-template-columns:1fr}.footer-layout nav{grid-template-columns:repeat(2,minmax(0,1fr))}.site-footer{padding-bottom:calc(70px + env(safe-area-inset-bottom))}.mobile-bottom{position:fixed;z-index:9;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(4,1fr);background:#19212cf7;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{min-height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:12px;line-height:1.3;gap:3px}.mobile-bottom a span{font-size:20px}.mobile-bottom a[aria-current=page]{color:var(--accent);font-weight:750}}@media(max-width:390px){.brand{gap:8px}.brand-word{font-size:16px}.brand img{max-width:95px}.menu-toggle{min-width:68px;padding:6px 9px}.card{padding:20px}.hero-visual{aspect-ratio:16/8}.menu-inner{padding-block:18px}}.nojs-nav{padding-block:20px}.nojs-nav div{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:12px}.nojs-nav strong{color:var(--blue)}.nojs-nav a{text-decoration:underline;text-underline-offset:4px}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media(max-width:760px){.menu-panel{position:static;max-height:none;overflow:visible;box-shadow:none}.menu-links a{min-height:44px;display:flex;align-items:center}.guide-link{display:inline-flex;align-items:center;min-height:44px;font-size:12px}.brand-actions{gap:6px}}
@media(max-width:390px){.guide-link{display:none}}
