:root{--bg:#FFF5F8;--bg-deep:#FFEBF1;--surface:#FFFFFF;--surface-soft:#FFF0F5;--hover:#FFE4EC;--title:#2D1B24;--text:#3D2A32;--muted:#6B4E58;--subtle:#9A7A85;--brand:#FF6B9D;--bright:#FF8FAB;--soft:#FFB3C6;--border:rgba(255,107,157,.15);--border2:rgba(255,107,157,.35);--shadow:0 12px 36px rgba(255,107,157,.12);--glow:0 10px 28px rgba(255,107,157,.18);--footer:#2D1B24;--footer-text:#FFD6E3;--max:1280px;--nav:72px}
*{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","Microsoft YaHei",Arial,sans-serif;line-height:1.78;overflow-x:hidden}body.no-scroll{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{max-width:100%;height:auto;display:block}.skip-link{position:fixed;left:16px;top:8px;z-index:5000;background:#fff;padding:10px 14px;border-radius:10px;transform:translateY(-160%)}.skip-link:focus{transform:none}.site-header{position:fixed;inset:0 0 auto;height:var(--nav);z-index:1200;background:rgba(255,245,248,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}.nav-shell{width:min(calc(100% - 30px),var(--max));height:100%;margin:auto;display:flex;align-items:center;gap:18px}.brand{display:inline-flex;align-items:center;flex:0 0 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30px),var(--max));margin:auto}.section{padding:70px 0}.section-soft{background:var(--surface-soft);border-block:1px solid var(--border)}.section-deep{background:var(--bg-deep)}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:13px;font-weight:900;letter-spacing:.08em}.eyebrow:before{content:"";width:22px;height:2px;background:var(--brand);border-radius:99px}h1,h2,h3{color:var(--title);line-height:1.24;margin:0 0 18px}h1{font-size:clamp(36px,5vw,68px);letter-spacing:-.03em}h2{font-size:clamp(28px,3.6vw,44px)}h3{font-size:21px}p{margin:0 0 18px}.lead{font-size:18px;color:var(--muted)}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:34px}.section-head p{max-width:720px;color:var(--muted);margin:0}.hero{padding:54px 0 26px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(320px,1fr);gap:28px}.hero-media,.feature-media{min-height:340px;background:linear-gradient(145deg,#ffe3ec,#fff7fa);border-radius:24px;border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow)}.hero-media img,.feature-media img{width:100%;height:100%;object-fit:cover}.image-fallback{min-height:260px;background:radial-gradient(circle at 20% 20%,rgba(255,107,157,.18),transparent 34%),linear-gradient(135deg,#fff0f5,#ffe5ee);position:relative}.image-fallback:after{content:"TANGXIN VLOG";position:absolute;right:22px;bottom:18px;color:rgba(45,27,36,.2);font-weight:900;letter-spacing:.16em}.hero-copy{background:#fff;border:1px solid var(--border);border-radius:24px;padding:36px;box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:center}.hero-copy h1{font-size:clamp(34px,4vw,56px)}.brand-kicker{font-weight:900;color:var(--brand)}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0}.btn{min-height:46px;padding:0 20px;border-radius:999px;font-weight:900;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--bright),var(--brand));color:#fff;box-shadow:var(--glow)}.btn-secondary{background:#fff;color:var(--brand);border:1px solid var(--border2)}.hero-list{display:grid;gap:10px}.hero-list a{display:flex;justify-content:space-between;padding:13px 0;border-top:1px solid var(--border);font-weight:800}.hero-list a span:last-child{color:var(--brand)}.quick-strip{display:flex;gap:10px;overflow-x:auto;padding:14px 0}.quick-strip a{flex:0 0 auto;min-height:42px;display:inline-flex;align-items:center;padding:0 16px;border-radius:999px;border:1px solid var(--border);background:#fff;color:var(--muted);font-weight:800}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.card,.prose{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px;box-shadow:var(--shadow)}.card p,.prose p{color:var(--muted)}.card-link{font-weight:900;color:var(--brand)}.card-tag{display:inline-flex;padding:6px 10px;border-radius:999px;background:var(--surface-soft);color:var(--brand);font-size:13px;font-weight:900;margin-bottom:14px}.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:30px;align-items:center}.split.reverse{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr)}.track{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(250px,1fr);gap:18px;overflow-x:auto;padding:4px 2px 16px}.topic-main{padding:32px;border-radius:22px;background:linear-gradient(145deg,#fff,#fff0f5);border:1px solid var(--border);box-shadow:var(--shadow)}.notice{padding:22px 24px;border-left:4px solid var(--brand);background:#fff;border-radius:0 16px 16px 0;color:var(--muted)}.page-hero{padding:62px 0 34px}.page-hero .inner{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);gap:28px;align-items:center}.page-hero .copy p{font-size:18px;color:var(--muted)}.tags{display:flex;flex-wrap:wrap;gap:10px}.tag{display:inline-flex;min-height:38px;align-items:center;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--border);color:var(--brand);font-weight:800}.faq{display:grid;gap:14px}.faq details{background:#fff;border:1px solid var(--border);border-radius:16px;padding:0 20px;box-shadow:var(--shadow)}.faq summary{cursor:pointer;padding:20px 0;font-weight:900;color:var(--title)}.faq details p{padding:0 0 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span{display:block;font-size:12px;letter-spacing:.14em;color:#ffb8cf}.footer-logo{height:48px;width:auto;max-width:180px}.footer-brand p{color:#e8b9c8}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0}.footer-links section{display:grid;align-content:start;gap:8px}.footer-links h2{font-size:16px;color:#fff}.footer-links a{color:#efc1d0}.footer-note{border-top:1px solid rgba(255,214,227,.14);padding-top:22px;color:#d8a9b8;font-size:14px}.overlay{position:fixed;inset:0;background:rgba(45,27,36,.34);z-index:1600;opacity:0;visibility:hidden;pointer-events:none}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.channel-panel{position:fixed;right:0;top:0;width:min(460px,88vw);height:100dvh;background:#fff;z-index:1700;transform:translateX(102%);visibility:hidden;pointer-events:none;transition:.25s}.channel-panel.is-open{transform:none;visibility:visible;pointer-events:auto}.panel-head{height:72px;padding:0 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;background:var(--bg)}.panel-scroll{height:calc(100dvh - 72px);overflow-y:auto;padding:22px}.channel-group{margin-bottom:26px}.channel-group h2{font-size:16px;color:var(--brand)}.channel-group a{display:block;padding:14px 0;border-bottom:1px solid var(--border)}.channel-group strong{display:block}.channel-group span{display:block;color:var(--muted);font-size:14px}.search-panel{position:fixed;left:0;right:0;top:var(--nav);z-index:1750;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow);transform:translateY(-120%);visibility:hidden;pointer-events:none;transition:.25s}.search-panel.is-open{transform:none;visibility:visible;pointer-events:auto}.search-shell{width:min(calc(100% - 30px),1100px);margin:auto;padding:30px 0}.search-head{display:flex;justify-content:space-between;gap:20px}.search-label{display:block;font-weight:800;color:var(--muted);margin-bottom:8px}.search-input{width:100%;height:54px;border:1px solid var(--border2);border-radius:14px;padding:0 16px;background:var(--bg)}.search-result-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}.search-result-list a{padding:14px 16px;border-radius:12px;background:var(--surface-soft);border:1px solid var(--border);font-weight:800}.popular-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;color:var(--muted)}.popular-links a{color:var(--brand);font-weight:800}.mobile-bottom-nav{display:none}:focus-visible{outline:3px solid rgba(255,107,157,.38);outline-offset:3px}
@media(max-width:1024px){.primary-nav a{padding:0 9px;font-size:14px}.hero-grid,.page-hero .inner{grid-template-columns:1fr}.hero-copy{order:-1}.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){:root{--nav:64px}.desktop-nav{display:none}.mobile-nav{display:flex;justify-content:space-between}.mobile-nav .brand{position:absolute;left:50%;transform:translateX(-50%);max-width:48%}.mobile-nav .brand-logo{height:38px;max-width:150px}.mobile-nav .app-button{margin-left:auto}.hero-grid{display:flex;flex-direction:column}.hero-copy{order:-2;padding:26px}.hero-media{min-height:260px}.section{padding:52px 0}.section-head{display:block}.grid-3,.grid-2,.split,.split.reverse{grid-template-columns:1fr}.footer-brand{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,1fr)}.search-panel{top:0;height:100dvh;overflow-y:auto}.search-result-list{grid-template-columns:1fr}.mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:1300;display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,255,255,.96);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom-nav a{min-height:52px;display:grid;place-items:center;font-size:12px;font-weight:850;color:var(--muted)}.mobile-bottom-nav a.is-active{color:var(--brand);background:var(--surface-soft)}.site-footer{padding-bottom:calc(88px + env(safe-area-inset-bottom))}}
@media(max-width:560px){h1{font-size:38px}h2{font-size:30px}.hero-copy h1{font-size:38px}.hero-media,.feature-media{min-height:220px}.grid-4{grid-template-columns:1fr}.card,.prose{padding:20px}.track{grid-auto-columns:82%}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}