:root{--bg:#F4F8FC;--deep:#E8F1FA;--paper:#fff;--sub:#F7FBFE;--ink:#0E2A44;--text:#1C3A56;--muted:#3D5C78;--soft:#6A88A0;--blue:#1E6FD9;--light:#6BA8F0;--dark:#0E4A9E;--amber:#E2B23A;--coral:#E07A62;--edge:rgba(30,111,217,.26);--shadow:0 12px 28px rgba(14,42,68,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.75 system-ui,-apple-system,'Microsoft YaHei',sans-serif;overflow-x:hidden}body.locked{overflow:hidden}a{color:var(--dark);text-decoration:none}a:hover{text-decoration:underline}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--dark);outline-offset:2px}h1,h2,h3,p{margin-top:0}h1{font-size:24px;line-height:1.3;color:var(--ink)}h2{font-size:20px;line-height:1.4;color:var(--ink)}h3{font-size:16px;color:var(--ink)}.wrap{width:min(960px,calc(100% - 32px));margin:0 auto}.topbar{position:fixed;z-index:100;inset:0 0 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0;box-shadow:var(--shadow);min-height:240px}.feature p{line-height:1.85}.media-slot{background:var(--bg);border:1px solid #dae9f7;display:flex;align-items:center;justify-content:center;border-radius:14px;max-width:100%;width:240px;height:160px;overflow:hidden}.media-slot img,.page-art img,.icon-art img{width:100%;height:100%;object-fit:contain;object-position:center}.narrow{height:168px}.square{height:160px}.lane-horizontal{display:flex;flex-wrap:wrap;align-items:center;gap:20px}.lane-horizontal .topic-label{width:100%;margin-bottom:0}.lane-horizontal>div:last-child{flex:1;min-width:230px}.lane-wrap .media-slot{height:168px;float:right;margin:4px 0 14px 24px}.lane-wrap:after{content:'';display:block;clear:both}.lane-card .media-slot{float:left;margin:0 24px 12px 0}.lane-card:after{content:'';display:block;clear:both}.offset{background:var(--deep)}.offset-one{max-width:580px;margin-bottom:30px}.offset-two{display:flex;align-items:center;justify-content:flex-end;gap:20px;margin-left:auto;max-width:760px}.offset-two>div:last-child{max-width:400px}.app-feature .app-images{display:flex;align-items:flex-start;gap:12px;margin-bottom:20px}.portrait{width:240px;height:320px}.icon-art{background:#eef6ff;width:48px;height:48px;border-radius:12px;flex:none}.end-story,.home-faq{padding:28px 32px;border-radius:14px;background:var(--deep);margin-top:25px}.brand-story{background:#fff}.home-faq details{background:#fff;border:1px solid var(--edge);border-radius:12px;margin:10px 0;padding:12px 16px}.home-faq summary{font-weight:700;cursor:pointer}.home-faq p{margin:12px 0 0}.breadcrumb{font-size:13px;color:var(--soft);margin-bottom:24px}.page-intro{padding:18px 0 20px;border-bottom:2px solid var(--edge);margin-bottom:24px}.page-intro 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@media(max-width:700px){.desktop-strip{display:none}.site-main{padding-top:62px}.top-inner{gap:6px}.header-pill{display:none}.header-actions{gap:8px}.header-actions button{min-width:44px;padding:6px 9px}.home,.inner-page{padding-bottom:100px}.home-hero{padding:25px 19px}.feature,.end-story,.home-faq{padding:22px 18px}.offset-two{flex-direction:column;align-items:flex-start}.lane-horizontal{display:block}.lane-horizontal .media-slot{margin:14px 0}.lane-card .media-slot,.lane-wrap .media-slot{float:none;margin:12px 0}.media-slot{width:min(240px,100%)}.inner-page.wrapped .page-art{float:none;margin:0 0 20px}.footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.drawer-panel{top:68px;max-height:calc(100dvh - 88px)}.drawer-grid{grid-template-columns:1fr}.search-panel{inset:0;width:100%;max-width:none;height:100dvh;border-radius:0;background:var(--ink);color:var(--deep);overflow-y:auto;padding:72px 20px 22px}.search-panel h2,.search-panel label{color:var(--deep)}.search-panel .search-links a{color:var(--ink)}.search-top button{color:var(--ink)}.mobile-bottom{position:fixed;z-index:120;bottom:0;left:0;right:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:var(--deep);border-top:1px solid var(--edge)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;min-height:44px}.mobile-bottom a.current{color:var(--ink);border-top:3px solid var(--blue);box-shadow:0 -4px 14px rgba(30,111,217,.25);font-weight:700}.site-footer{padding-bottom:calc(80px + env(safe-area-inset-bottom))}.app-images{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

.inner-page:has(.page-art img[src="lanqi-banner.webp"]) .page-art{width:100%;height:200px;margin:0 0 24px}