/* 红桃视频：温润克制的品牌视频平台视觉 */
:root{
  --brand:#B93A4A;--brand-soft:#D9828D;--ink:#332D2F;--ink-strong:#2B2528;
  --muted:#756B6E;--paper:#FFF9F7;--paper-2:#F6ECEB;--accent:#E45B4F;
  --white:#fff;--line:#E8D9D8;--shadow:0 20px 60px rgba(73,44,49,.10);
  --radius:24px;--radius-sm:14px;--max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}
button,input{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 40px),var(--max));margin-inline:auto}
.narrow{width:min(calc(100% - 40px),820px);margin-inline:auto}
.skip-link{position:fixed;left:16px;top:16px;z-index:1000;padding:10px 14px;background:var(--ink-strong);color:#fff;border-radius:10px;transform:translateY(-180%)}
.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,249,247,.95);border-bottom:1px solid rgba(185,58,74,.10);backdrop-filter:blur(16px)}
.header-row{min-height:78px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;margin-right:auto}
.brand img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:var(--paper-2)}
.brand__text{display:grid;line-height:1.2}.brand__text strong{font-size:19px;color:var(--ink-strong)}.brand__text small{font-size:11px;color:var(--muted);margin-top:4px}
.primary-nav{display:flex;align-items:center;gap:6px}.primary-nav a{padding:9px 10px;border-radius:9px;text-decoration:none;font-size:14px;color:var(--muted)}.primary-nav a:hover,.primary-nav a[aria-current="page"]{background:var(--paper-2);color:var(--brand)}
.search-trigger,.nav-toggle{border:0;border-radius:12px;padding:10px 14px;background:var(--ink-strong);color:#fff}.nav-toggle{display:none}
.breadcrumbs{width:min(calc(100% - 40px),var(--max));margin:14px auto 0}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0;font-size:13px;color:var(--muted)}.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:8px;color:#b5a3a7}.breadcrumbs a{color:var(--brand)}
.eyebrow{margin:0 0 10px;color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.eyebrow--light{color:#f6bdc2}
h1,h2,h3{color:var(--ink-strong);line-height:1.18;margin:0 0 .65em;letter-spacing:-.02em}h1{font-size:clamp(38px,5vw,68px)}h2{font-size:clamp(27px,3.4vw,42px)}h3{font-size:20px}p{margin:0 0 1em}
.hero{padding:58px 0 46px;background:radial-gradient(circle at 85% 20%,rgba(217,130,141,.26),transparent 30%),linear-gradient(180deg,#fff5f2 0%,var(--paper) 100%)}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}.hero-lead{font-size:19px;color:#5e5356;max-width:720px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 18px;border-radius:14px;text-decoration:none;font-weight:750;border:1px solid transparent}.btn--primary{background:var(--accent);color:#fff;box-shadow:0 12px 30px rgba(228,91,79,.20)}.btn--secondary{background:#fff;color:var(--brand);border-color:#e8c8cc}.btn--light{background:#fff;color:var(--ink-strong)}
.hero-note{display:flex;flex-wrap:wrap;gap:8px;padding:13px 16px;background:#fff;border:1px solid var(--line);border-radius:14px;width:max-content;max-width:100%;font-size:14px}.hero-note strong{color:var(--brand)}
.hero-visual{margin:0}.hero-visual img,.page-hero figure img{width:100%;aspect-ratio:1.32/1;object-fit:cover;border-radius:30px;box-shadow:var(--shadow)}.hero-visual figcaption{font-size:12px;color:var(--muted);margin-top:10px}
.section{padding:80px 0}.section--compact{padding:34px 0}.section--soft{background:var(--paper-2)}.section--dark{background:var(--ink-strong);color:#eee4e7}.section--cta{padding-top:30px}.section-heading{max-width:780px;margin-bottom:34px}.section-heading>p{font-size:17px;color:var(--muted)}.section-heading--split{max-width:none;display:grid;grid-template-columns:1fr .85fr;gap:50px;align-items:end}.section-heading--split>p{margin:0}
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.entry-card{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 12px 32px rgba(68,44,48,.06)}.entry-card img{width:100%;aspect-ratio:1.56/1;object-fit:cover}.entry-card__body{padding:22px}.entry-card h3 a{text-decoration:none}.entry-card p{color:var(--muted)}.text-link{color:var(--brand);font-weight:750}
.split-feature{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}.split-feature--reverse>div{order:2}.split-feature--reverse>figure{order:1}.split-feature__media{margin:0}.split-feature__media img{width:100%;aspect-ratio:1.35/1;object-fit:cover;border-radius:26px}.split-feature p:not(.eyebrow){font-size:17px}.inline-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.inline-links a{display:inline-flex;padding:9px 12px;border-radius:12px;background:#fff;border:1px solid var(--line);color:var(--brand);font-weight:700;text-decoration:none}
.guide-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.guide-tile{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease}.guide-tile:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.guide-tile img{width:100%;aspect-ratio:1.6/1;object-fit:cover}.guide-tile__body{display:grid;gap:8px;padding:17px}.guide-tile__body strong{font-size:18px;color:var(--ink-strong)}.guide-tile__body span{font-size:13px;color:var(--muted)}
.dark-grid{display:grid;grid-template-columns:1fr .9fr;gap:50px;align-items:center}.section--dark h2{color:#fff}.section--dark p{font-size:17px}.dark-grid figure{margin:0}.dark-grid img{border-radius:26px;width:100%;aspect-ratio:1.4/1;object-fit:cover;opacity:.94}
.notes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.note-card{padding:28px;border-top:3px solid var(--brand);background:#fff;border-radius:0 0 18px 18px}.note-card p{color:var(--muted)}
.faq-preview{display:grid;grid-template-columns:.78fr 1.22fr;gap:46px}.faq-preview__intro{position:sticky;top:120px;align-self:start}.mini-faq{display:grid;gap:14px}.mini-faq article{padding:24px 26px;background:#fff;border:1px solid var(--line);border-radius:18px}.mini-faq h3{font-size:18px}.mini-faq p{color:var(--muted)}.mini-faq a{color:var(--brand);font-weight:700}
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:34px 38px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:0 12px 38px rgba(70,45,48,.06)}.cta-band h2{font-size:30px}.cta-band>div{max-width:760px}
.page-hero{padding:54px 0 36px}.page-hero--official{background:linear-gradient(180deg,#fff2f1,var(--paper))}.page-hero--online{background:linear-gradient(180deg,#f9efee,var(--paper))}.page-hero--app{background:linear-gradient(180deg,#fff5ef,var(--paper))}.page-hero--guide,.page-hero--detail,.page-hero--faq,.page-hero--search{background:linear-gradient(180deg,#fbf2f1,var(--paper))}.page-hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}.page-hero h1{font-size:clamp(34px,4.4vw,58px)}.page-hero p:not(.eyebrow){font-size:18px;color:#5d5355}.page-hero figure{margin:0}
.info-rail{display:flex;align-items:center;gap:16px;padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:16px}.info-rail strong{color:var(--brand)}.info-rail span:last-child{margin-left:auto;color:var(--muted)}
.statless-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.statless-grid article{display:grid;gap:3px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:14px}.statless-grid strong{color:var(--ink-strong)}.statless-grid span{font-size:13px;color:var(--muted)}
.warning-box{display:flex;align-items:flex-start;gap:18px;padding:20px 22px;background:#fff;border-left:4px solid var(--accent);border-radius:12px}.warning-box strong{white-space:nowrap;color:var(--brand)}.warning-box p{margin:0;color:var(--muted)}
.reading-block{padding:68px 0}.reading-block--tinted{background:var(--paper-2)}.reading-block__inner{width:min(calc(100% - 40px),900px);margin:auto}.reading-block h2{max-width:820px}.reading-block p{font-size:17px;color:#53494c}.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 24px;margin:28px 0 0;padding:0;list-style:none}.check-list li{position:relative;padding:14px 16px 14px 42px;background:#fff;border:1px solid var(--line);border-radius:14px}.check-list li::before{content:"✓";position:absolute;left:16px;top:14px;color:var(--brand);font-weight:900}
.next-grid{display:grid;grid-template-columns:1.1fr repeat(3,1fr);gap:14px;align-items:stretch}.next-grid>div{padding:20px}.next-grid>a{display:grid;align-content:start;gap:8px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:16px;text-decoration:none}.next-grid>a strong{color:var(--brand)}.next-grid>a span{font-size:13px;color:var(--muted)}
.compare-panel{display:grid;grid-template-columns:1.2fr .8fr;gap:44px;padding:34px;border:1px solid var(--line);border-radius:24px;background:#fff}.compare-panel__links{display:grid;gap:10px}.compare-panel__links a{padding:12px 14px;border-radius:12px;background:var(--paper-2);color:var(--brand);font-weight:700;text-decoration:none}
.device-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.device-grid article{padding:32px;background:#fff;border:1px solid var(--line);border-radius:20px}.device-grid a{color:var(--brand);font-weight:750}
.guide-index{display:grid;gap:18px}.guide-index article{display:grid;grid-template-columns:260px 1fr;gap:26px;align-items:center;padding:20px;background:#fff;border:1px solid var(--line);border-radius:20px}.guide-index img{width:100%;aspect-ratio:1.55/1;object-fit:cover;border-radius:14px}.guide-index h2{font-size:28px}.guide-index h2 a{text-decoration:none}.guide-index p{color:var(--muted)}
.workflow{display:grid;grid-template-columns:.8fr 1.2fr;gap:44px}.workflow ol{counter-reset:steps;list-style:none;padding:0;margin:0;display:grid;gap:12px}.workflow li{counter-increment:steps;display:grid;grid-template-columns:44px 1fr;gap:2px 14px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:16px}.workflow li::before{content:counter(steps);grid-row:1/3;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800}.workflow li span{grid-column:2;color:var(--muted);font-size:14px}
.search-callout{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:34px;border-radius:22px;background:#fff;border:1px solid var(--line)}.search-callout>div{max-width:760px}
.faq-list{display:grid;gap:12px;max-width:940px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}.faq-item h2{margin:0}.faq-item button{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:20px 22px;border:0;background:transparent;color:var(--ink-strong);font-weight:800}.faq-item button span{font-size:28px;color:var(--brand);transition:transform .2s}.faq-item button[aria-expanded="true"] span{transform:rotate(45deg)}.faq-answer{padding:0 22px 22px}.faq-answer p{color:var(--muted)}.faq-answer a{color:var(--brand);font-weight:700}
.search-form label{display:block;font-weight:750;margin-bottom:8px}.search-form__row{display:flex;gap:10px}.search-form input{flex:1;min-width:0;border:1px solid #d9c7ca;border-radius:12px;padding:12px 14px;background:#fff;color:var(--ink)}.search-form button{border:0;border-radius:12px;padding:12px 18px;background:var(--brand);color:#fff;font-weight:750}.search-form--page{margin-top:24px}.search-summary{margin-bottom:24px}.search-summary h2{font-size:28px}.search-results{display:grid;gap:14px}.search-results article{padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:16px}.search-results h3 a{text-decoration:none}.search-results p{color:var(--muted)}
.empty-state{padding:34px;background:#fff;border:1px solid var(--line);border-radius:20px;text-align:center}.tag-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:20px}.tag-links a{padding:8px 13px;background:var(--paper-2);border-radius:999px;color:var(--brand);text-decoration:none;font-weight:700}
.not-found{min-height:70vh;display:grid;place-items:center;padding:80px 0;text-align:center}.error-code{margin:0;color:var(--brand-soft);font-size:100px;font-weight:900;line-height:1}.not-found-links{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:36px}.not-found-links a{padding:16px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--brand);font-weight:700;text-decoration:none}
.site-footer{margin-top:30px;padding:58px 0 26px;background:var(--ink-strong);color:#d9cfd2}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:36px}.footer-title,.footer-heading{color:#fff}.footer-title{font-size:28px}.footer-heading{font-size:15px}.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}.site-footer a{color:#eee2e5}.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px}.footer-bottom p{margin:0}
.search-modal[hidden]{display:none !important}.search-modal{position:fixed;inset:0;z-index:200;display:grid;place-items:start center;padding:10vh 20px 20px}.search-modal__backdrop{position:absolute;inset:0;background:rgba(43,37,40,.72);backdrop-filter:blur(5px)}.search-panel{position:relative;z-index:1;width:min(100%,680px);padding:30px;background:var(--paper);border-radius:24px;box-shadow:0 40px 90px rgba(0,0,0,.28)}.search-close{position:absolute;right:18px;top:18px;border:0;background:var(--paper-2);border-radius:10px;padding:7px 10px}.search-panel h2{font-size:30px}.muted{color:var(--muted);font-size:13px}.modal-open{overflow:hidden}
.back-top{position:fixed;right:22px;bottom:22px;z-index:70;border:0;border-radius:999px;padding:11px 15px;background:var(--ink-strong);color:#fff;box-shadow:0 10px 28px rgba(0,0,0,.18)}.back-top[hidden]{display:none}
@media (max-width:1024px){.primary-nav{display:none;position:absolute;left:20px;right:20px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.primary-nav.is-open{display:grid}.nav-toggle{display:inline-flex}.search-trigger{padding:9px 12px}.hero-grid,.page-hero__grid,.split-feature,.dark-grid{grid-template-columns:1fr;gap:32px}.hero-copy{order:1}.hero-visual{order:2}.page-hero figure{max-width:760px}.guide-strip{grid-template-columns:repeat(2,1fr)}.entry-grid,.notes-grid{grid-template-columns:repeat(2,1fr)}.section-heading--split,.faq-preview,.workflow,.compare-panel{grid-template-columns:1fr}.faq-preview__intro{position:static}.next-grid{grid-template-columns:1fr 1fr}.next-grid>div{grid-column:1/-1}.footer-grid{grid-template-columns:1fr 1fr}.cta-band,.search-callout{align-items:flex-start;flex-direction:column}}
@media (max-width:768px){.container,.narrow,.breadcrumbs{width:min(calc(100% - 28px),var(--max))}.header-row{min-height:68px;gap:10px}.brand__text small{display:none}.brand img{width:40px;height:40px}.search-trigger{font-size:13px}.hero,.page-hero{padding-top:34px}.hero-grid,.page-hero__grid{gap:24px}h1{font-size:clamp(34px,10vw,48px)}.hero-lead,.page-hero p:not(.eyebrow){font-size:16px}.section{padding:58px 0}.entry-grid,.notes-grid,.guide-strip,.device-grid,.statless-grid{grid-template-columns:1fr}.section-heading--split{gap:10px}.split-feature--reverse>div,.split-feature--reverse>figure{order:initial}.check-list{grid-template-columns:1fr}.next-grid{grid-template-columns:1fr}.guide-index article{grid-template-columns:1fr}.info-rail{align-items:flex-start;flex-direction:column}.info-rail span:last-child{margin-left:0}.footer-grid{grid-template-columns:1fr}.footer-bottom{align-items:flex-start;flex-direction:column}.cta-band,.search-callout{padding:26px}.search-form__row{flex-direction:column}.not-found-links{grid-template-columns:1fr}}
@media (max-width:600px){.primary-nav{left:14px;right:14px}.hero-actions{display:grid}.btn{width:100%}.entry-card__body{padding:18px}.reading-block{padding:50px 0}.reading-block p{font-size:16px}.page-hero figure img,.hero-visual img{border-radius:20px}.search-panel{padding:24px 18px}.brand__text strong{font-size:17px}.search-trigger{display:none}}
@media (max-width:375px){.container,.narrow,.breadcrumbs{width:min(calc(100% - 20px),var(--max))}.header-row{gap:6px}.brand{gap:7px}.nav-toggle{padding:8px 10px}.hero-note{font-size:12px}.section{padding:48px 0}.entry-card,.note-card,.faq-item{border-radius:14px}.cta-band{padding:20px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none !important;animation:none !important}}