/* 黄桃视频：温暖、清爽、编辑型内容站 */
:root{--primary:#E8A63A;--primary-soft:#F4D89B;--ink:#26231F;--paper:#FFFDF8;--paper-2:#F7F1E7;--text:#302D29;--muted:#746D64;--accent:#D96F38;--line:#E8DED0;--white:#fff;--radius:22px;--shadow:0 18px 48px rgba(38,35,31,.08);--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75}body.modal-open{overflow:hidden}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input{font:inherit}.container{width:min(var(--max),calc(100% - 40px));margin-inline:auto}.narrow{width:min(860px,calc(100% - 40px))}.skip-link{position:fixed;left:12px;top:-80px;z-index:100;background:var(--ink);color:#fff;padding:10px 14px;border-radius:10px}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,253,248,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(232,222,208,.8)}.header-inner{min-height:76px;display:flex;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;white-space:nowrap}.brand img{width:36px;height:36px;object-fit:contain}.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}.site-nav a{padding:9px 11px;border-radius:999px;color:var(--muted);font-size:15px}.site-nav a:hover,.site-nav a.active{background:var(--paper-2);color:var(--ink)}.header-tools{margin-left:4px}.search-open,.menu-toggle{border:0;background:var(--ink);color:#fff;border-radius:999px;padding:9px 15px;cursor:pointer}.menu-toggle{display:none}.site-main{min-height:68vh}.home-hero{padding:58px 0 40px;background:linear-gradient(180deg,#FFF9EB 0%,var(--paper) 100%)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}.hero-copy h1,.page-hero h1{font-size:clamp(36px,5vw,66px);line-height:1.08;letter-spacing:-.035em;margin:12px 0 20px;color:var(--ink)}.hero-copy>p,.page-hero>p,.page-hero div>p{font-size:19px;color:var(--muted);max-width:760px}.hero-media{position:relative}.hero-media:before{content:"";position:absolute;inset:-18px 28px 18px -18px;background:var(--primary-soft);border-radius:32px;z-index:-1}.hero-media img,.page-hero img,.feature-split img,.editorial img,.banner img{width:100%;border-radius:28px;box-shadow:var(--shadow);object-fit:cover;aspect-ratio:16/10}.eyebrow{display:inline-block;color:#8A5716;background:#FFF0C8;border:1px solid #F2D493;border-radius:999px;padding:5px 10px;font-size:13px;font-weight:800;letter-spacing:.04em}.actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 18px;border:1px solid var(--ink);border-radius:999px;background:var(--ink);color:#fff;font-weight:750;cursor:pointer}.button:hover{transform:translateY(-1px)}.button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}.text-link{font-weight:800;text-decoration:underline;text-decoration-color:var(--primary);text-decoration-thickness:2px;text-underline-offset:5px}.hero-notes{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.hero-notes span{font-size:13px;color:var(--muted);padding:7px 10px;border:1px solid var(--line);border-radius:999px;background:#fff}.section{padding:72px 0}.section.alt{background:var(--paper-2)}.full-bleed{margin-inline:calc(50% - 50vw)}.full-bleed>.inner{width:min(var(--max),calc(100% - 40px));margin:auto}.section-head{max-width:760px;margin-bottom:32px}.section-head h2,.intro-band h2,.feature-split h2,.editorial h2,.banner h2{font-size:clamp(28px,4vw,44px);line-height:1.15;letter-spacing:-.025em;margin:10px 0 14px;color:var(--ink)}.section-head p,.intro-band p,.feature-split p,.editorial p,.banner p{color:var(--muted);font-size:17px}.intro-band{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:end;border-bottom:1px solid var(--line)}.route-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding-top:36px}.route-grid>a{padding:24px;border:1px solid var(--line);border-radius:20px;background:#fff;min-height:245px;display:flex;flex-direction:column}.route-grid>a:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.route-grid span{color:var(--accent);font-weight:900}.route-grid h2{font-size:22px;line-height:1.25;margin:28px 0 10px}.route-grid p{color:var(--muted);margin:0 0 24px}.route-grid strong{margin-top:auto;font-size:14px}.feature-split,.editorial{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.feature-split{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.content-card{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden}.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover}.card-body{padding:20px}.card-body h3{font-size:20px;line-height:1.35;margin:10px 0}.card-body p{color:var(--muted);font-size:15px}.tag-row{display:flex;gap:7px;flex-wrap:wrap}.tag-row span{font-size:12px;background:var(--paper-2);border-radius:999px;padding:4px 8px;color:var(--muted)}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:22px}.comparison article{padding:26px;border-radius:24px;background:#fff;border:1px solid var(--line)}.comparison article>img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:16px;margin-bottom:22px}.comparison article>span{color:var(--accent);font-weight:800;font-size:13px}.comparison h3{font-size:26px;line-height:1.2;margin:10px 0}.comparison p,.comparison li{color:var(--muted)}.banner{background:var(--ink);color:#fff;padding:30px;border-radius:28px;display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:center;margin-bottom:70px}.banner h2,.banner p{color:#fff}.banner .eyebrow{color:#4B3510}.banner .button{background:#fff;color:var(--ink);border-color:#fff}.banner .button.secondary{background:transparent;color:#fff;border-color:#625B53}.site-footer{background:var(--ink);color:#EEE8DE;padding:58px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:36px}.footer-grid h2{font-size:15px;color:#fff;margin:0 0 16px}.footer-grid a:not(.brand){display:block;color:#CFC7BC;padding:5px 0}.footer-grid p{color:#BFB7AD;max-width:390px}.footer-brand img{filter:brightness(1.1)}.footer-bottom{border-top:1px solid #45403A;margin-top:40px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#AAA198;font-size:13px}.back-top{text-decoration:underline}.breadcrumbs{padding-top:26px}.breadcrumbs ol{list-style:none;display:flex;gap:9px;flex-wrap:wrap;margin:0;padding:0;color:var(--muted);font-size:13px}.breadcrumbs li+li:before{content:"/";margin-right:9px;color:#B8AEA1}.page-hero{padding:52px 0 46px}.page-hero.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}.page-hero.compact h1{font-size:clamp(34px,5vw,54px)}.info-grid,.check-grid,.question-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.check-grid{grid-template-columns:repeat(4,1fr)}.info-grid article,.check-grid article,.question-grid article,.warning-list article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.info-grid h3,.check-grid h3,.question-grid h3{font-size:19px;line-height:1.35}.info-grid p,.check-grid p,.question-grid p,.warning-list p{color:var(--muted)}.check-grid b{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;background:#FFF0C8;color:#8A5716}.steps{display:grid;gap:14px;counter-reset:item;list-style:none;padding:0}.steps li{display:grid;grid-template-columns:220px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.steps strong{color:var(--ink)}.steps span{color:var(--muted)}.prose{font-size:17px;max-width:850px}.prose h2{font-size:32px;line-height:1.2;margin:38px 0 12px}.prose h3{font-size:22px;margin:28px 0 8px}.prose p{color:#514C46}.prose.two-col{display:grid;grid-template-columns:1fr 1fr;gap:50px;max-width:none}.link-list{display:grid;gap:10px}.link-list>a{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px 20px;border:1px solid var(--line);border-radius:16px;background:#fff}.link-list>a:hover{border-color:#D8B875}.link-list strong{font-size:17px}.link-list span{color:var(--muted);text-align:right}.faq-list{display:grid;gap:10px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 18px}.faq-list summary{cursor:pointer;font-weight:800;padding:18px 36px 18px 0;position:relative}.faq-list summary:after{content:"+";position:absolute;right:4px}.faq-list details[open] summary:after{content:"−"}.faq-list p{color:var(--muted);padding:0 0 18px;margin:0}.faq-list.large summary{font-size:18px}.section-cta{text-align:center;margin-top:26px}.article-page{padding:48px 0 80px}.article-page header{padding-bottom:30px;border-bottom:1px solid var(--line)}.article-page h1{font-size:clamp(38px,6vw,62px);line-height:1.1;letter-spacing:-.03em;margin:12px 0}.lead{font-size:20px;color:var(--muted)}.article-page section{padding:28px 0;border-bottom:1px solid var(--line)}.article-page section h2{font-size:29px;line-height:1.25;margin:0 0 12px}.article-page section p{font-size:17px;color:#4D4842}.article-next{margin-top:38px;padding:26px;border-radius:20px;background:var(--paper-2)}.article-next h2{margin-top:0}.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:80}.search-backdrop{position:absolute;inset:0;background:rgba(38,35,31,.6)}.search-dialog{position:relative;width:min(620px,calc(100% - 32px));margin:10vh auto;background:var(--paper);padding:30px;border-radius:24px;box-shadow:var(--shadow)}.search-close{position:absolute;right:16px;top:12px;border:0;background:transparent;font-size:32px;cursor:pointer}.search-dialog h2{font-size:32px;margin:0 0 8px}.search-dialog p{color:var(--muted)}.search-dialog label,.search-page-form label{display:block;font-weight:800;margin-bottom:7px}.search-form-row{display:flex;gap:10px}.search-form-row input{flex:1;min-width:0;border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 16px;outline:none}.search-form-row input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(232,166,58,.16)}.search-results{display:grid;gap:12px}.search-results article{padding:22px;border:1px solid var(--line);background:#fff;border-radius:18px}.search-results span{font-size:12px;color:var(--accent);font-weight:800}.search-results h2{font-size:22px;margin:7px 0}.search-results p{color:var(--muted);margin-bottom:0}.empty-state{text-align:center;background:var(--paper-2);border-radius:24px;padding-inline:30px}.tag-links{display:flex;gap:9px;justify-content:center;flex-wrap:wrap}.tag-links a{padding:8px 12px;background:#fff;border:1px solid var(--line);border-radius:999px}.warning-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}.warning-list article{border-left:4px solid var(--accent)}.error-panel{padding:90px 0}.error-panel h1{font-size:54px;line-height:1.1}.error-panel p{font-size:18px;color:var(--muted)}
@media (max-width:1024px){.site-nav{position:absolute;left:20px;right:20px;top:70px;display:none;flex-direction:column;align-items:stretch;background:var(--paper);padding:12px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.site-nav.open{display:flex}.menu-toggle{display:block;margin-left:auto}.header-tools{margin-left:0}.hero-grid,.page-hero.split,.feature-split,.editorial{grid-template-columns:1fr}.hero-media{max-width:760px}.route-grid{grid-template-columns:1fr 1fr}.card-grid{grid-template-columns:1fr 1fr}.check-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.2fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2/4}}
@media (max-width:768px){.container,.narrow{width:min(100% - 28px,var(--max))}.header-inner{min-height:66px}.brand img{width:31px;height:31px}.home-hero{padding-top:36px}.hero-grid{gap:32px}.hero-copy h1,.page-hero h1{font-size:42px}.intro-band,.comparison,.prose.two-col,.banner{grid-template-columns:1fr}.route-grid,.card-grid,.info-grid,.question-grid,.warning-list{grid-template-columns:1fr}.section{padding:54px 0}.full-bleed>.inner{width:calc(100% - 28px)}.page-hero{padding-top:36px}.steps li{grid-template-columns:1fr;gap:4px}.link-list>a{display:block}.link-list span{display:block;text-align:left;margin-top:4px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:1/-1}.footer-bottom{flex-direction:column}.search-form-row{flex-direction:column}.search-form-row .button{width:100%}}
@media (max-width:600px){.hero-copy h1,.page-hero h1{font-size:36px}.hero-copy>p,.page-hero>p,.page-hero div>p{font-size:17px}.route-grid,.check-grid,.footer-grid{grid-template-columns:1fr}.footer-grid>div{grid-column:auto!important}.actions{align-items:stretch}.actions .button{width:100%}.card-grid{grid-template-columns:1fr}.comparison h3{font-size:22px}.banner{padding:20px}.error-panel h1{font-size:42px}.header-tools .search-open{padding-inline:12px}}
@media (max-width:375px){.container,.narrow{width:calc(100% - 22px)}.brand span{font-size:15px}.menu-toggle,.search-open{font-size:13px;padding:8px 10px}.hero-copy h1,.page-hero h1{font-size:32px}.section-head h2,.intro-band h2,.feature-split h2,.editorial h2,.banner h2{font-size:28px}.full-bleed>.inner{width:calc(100% - 22px)}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.index-groups{display:grid;gap:34px}.index-group{padding:30px;border:1px solid var(--line);border-radius:24px;background:#fff}.index-group header{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px;margin-bottom:22px}.index-group header h2{font-size:28px;line-height:1.2;margin:0}.index-group header p{color:var(--muted);margin:0}@media(max-width:768px){.index-group{padding:22px}.index-group header{grid-template-columns:1fr;gap:8px}.index-group header h2{font-size:24px}}