/* 红桃视频内容站：温润、克制、编辑型布局 */
:root{
  --brand:#B93A4A;
  --brand-soft:#D9828D;
  --ink:#2B2528;
  --text:#332D2F;
  --muted:#756B6E;
  --bg:#FFF9F7;
  --bg-2:#F6ECEB;
  --accent:#E45B4F;
  --line:#E8D9D7;
  --white:#fff;
  --shadow:0 22px 60px rgba(61,38,43,.10);
  --radius:24px;
  --radius-sm:14px;
  --container:min(1180px,calc(100% - 40px));
}
*{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","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased}
body.modal-open{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{color:inherit}
code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--bg-2);padding:.12em .35em;border-radius:.35em}
.container{width:var(--container);margin-inline:auto}
.narrow{max-width:780px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;left:16px;top:12px;z-index:200;background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;transform:translateY(-150%)}
.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,249,247,.94);backdrop-filter:saturate(130%) blur(14px);border-bottom:1px solid rgba(232,217,215,.8)}
.header-inner{height:76px;display:flex;align-items:center;gap:28px;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand img{width:44px;height:44px;object-fit:contain;border-radius:12px}
.brand-text{display:grid;line-height:1.12;gap:4px}
.brand-text strong{font-size:19px;color:var(--ink);letter-spacing:.03em}
.brand-text small{color:var(--muted);font-size:12px}
.primary-nav{display:flex;align-items:center;gap:4px}
.primary-nav a,.search-open{padding:9px 11px;border-radius:10px;font-size:14px;color:var(--muted);border:0;background:none;cursor:pointer;white-space:nowrap}
.primary-nav a:hover,.primary-nav a[aria-current="page"],.search-open:hover{color:var(--brand);background:var(--bg-2)}
.search-open{margin-left:4px;border:1px solid var(--line)}
.nav-toggle{display:none;border:0;background:none;width:44px;height:44px;padding:10px;cursor:pointer}
.nav-toggle span:not(.sr-only){display:block;height:2px;background:var(--ink);margin:5px 0;border-radius:2px}
.main{min-height:60vh;overflow:hidden}
.hero{padding:82px 0 66px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(380px,.98fr);gap:64px;align-items:center}
.eyebrow{margin:0 0 12px;color:var(--brand);font-weight:750;font-size:13px;letter-spacing:.14em;text-transform:uppercase}
h1,h2,h3{color:var(--ink);line-height:1.22;margin-top:0;letter-spacing:-.025em}
h1{font-size:clamp(40px,5.4vw,70px);margin-bottom:24px}
h2{font-size:clamp(27px,3.3vw,42px);margin-bottom:18px}
h3{font-size:21px;margin-bottom:10px}
p{margin:0 0 18px}
.hero-lead,.article-lead{font-size:19px;color:#5d5356;max-width:740px}
.button-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:28px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:12px;background:var(--brand);color:#fff;font-weight:700;border:1px solid var(--brand);transition:transform .18s ease,box-shadow .18s ease,background .18s ease;cursor:pointer}
.button:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(185,58,74,.18);background:#a83140}
.button-secondary{background:transparent;color:var(--brand);border-color:#cfafb4}
.button-secondary:hover{background:var(--bg-2);box-shadow:none}
.text-link{color:var(--brand);font-weight:720;text-decoration:underline;text-decoration-color:rgba(185,58,74,.28);text-underline-offset:4px}
.text-link:hover{text-decoration-color:var(--brand)}
.hero-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin:38px 0 0;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.hero-facts div{padding:16px;background:var(--bg)}
.hero-facts dt{color:var(--muted);font-size:12px;margin-bottom:5px}
.hero-facts dd{margin:0;color:var(--ink);font-weight:700;font-size:14px}
.hero-media{margin:0;position:relative}
.hero-media img{width:100%;aspect-ratio:1.34/1;object-fit:cover;border-radius:34px;box-shadow:var(--shadow);background:var(--bg-2)}
.hero-media figcaption{position:absolute;left:24px;right:24px;bottom:22px;background:rgba(43,37,40,.78);color:#fff;padding:12px 15px;border-radius:12px;font-size:13px;backdrop-filter:blur(8px)}
.section{padding:78px 0}
.section-intro{padding-top:36px}
.split-heading{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.65fr);gap:60px;align-items:end;margin-bottom:34px}
.split-heading>p{color:var(--muted);font-size:16px;margin-bottom:8px}
.card-grid{display:grid;gap:20px}
.card-grid.three{grid-template-columns:repeat(3,1fr)}
.card-grid.two{grid-template-columns:repeat(2,1fr)}
.link-card{border-top:3px solid var(--brand);background:#fff;padding:28px;border-radius:0 0 var(--radius-sm) var(--radius-sm);box-shadow:0 12px 30px rgba(61,38,43,.06);min-height:260px;display:flex;flex-direction:column}
.link-card h3 a:hover{color:var(--brand)}
.link-card p:not(.eyebrow){color:var(--muted)}
.link-card .text-link{margin-top:auto}
.tone-band{background:var(--bg-2)}
.tone-soft{background:#fffdfc;border-block:1px solid var(--line)}
.editorial-split{display:grid;grid-template-columns:minmax(320px,.95fr) minmax(0,1.05fr);gap:64px;align-items:center}
.editorial-split.reverse{grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr)}
.editorial-split.reverse figure{order:2}
.editorial-split figure{margin:0}
.editorial-split figure img,.feature-band img{width:100%;border-radius:var(--radius);object-fit:cover;background:#eadcda;box-shadow:0 16px 46px rgba(61,38,43,.08)}
.check-list{padding:0;margin:22px 0;list-style:none;display:grid;gap:11px}
.check-list li{position:relative;padding-left:28px}
.check-list li::before{content:"✓";position:absolute;left:0;top:.05em;color:var(--brand);font-weight:900}
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:28px 0}
.metric-row div{border-left:2px solid var(--brand-soft);padding-left:14px;display:grid;gap:3px}
.metric-row strong{font-size:24px;color:var(--brand)}
.metric-row span{font-size:13px;color:var(--muted)}
.section-mobile-showcase{padding-top:46px}
.mobile-panel{background:var(--ink);color:#f7eded;border-radius:32px;display:grid;grid-template-columns:1.05fr .65fr;gap:40px;align-items:center;padding:58px 58px 0;overflow:hidden}
.mobile-panel h2{color:#fff}
.mobile-panel .eyebrow{color:#f3b0b8}
.mobile-panel p{color:#dacdd0;max-width:660px}
.mobile-panel figure{margin:0;align-self:end}
.mobile-panel img{max-height:480px;object-fit:cover;object-position:top;border-radius:30px 30px 0 0;box-shadow:0 -20px 60px rgba(0,0,0,.18)}
.content-index{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:start}
.step-list{list-style:none;padding:0;margin:0;display:grid;gap:0;counter-reset:steps}
.step-list li{counter-increment:steps;display:grid;grid-template-columns:56px 180px 1fr;align-items:start;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.step-list li::before{content:counter(steps,decimal-leading-zero);font-size:13px;color:var(--brand);font-weight:800;padding-top:3px}
.step-list strong{color:var(--ink)}
.step-list span{color:var(--muted)}
.feature-band{display:grid;grid-template-columns:.8fr 1.2fr;gap:52px;align-items:center;border-block:1px solid var(--line);padding-block:38px}
.feature-band figure{margin:0}
.faq-list{display:grid;gap:10px}
.faq-list details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 20px}
.faq-list summary{cursor:pointer;font-weight:750;color:var(--ink);padding:18px 34px 18px 0;position:relative;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:2px;top:14px;color:var(--brand);font-size:24px}
.faq-list details[open] summary::after{content:"−"}
.faq-list details p{padding:0 0 20px;color:var(--muted);max-width:900px}
.faq-list.full{max-width:920px}
.safety-band{background:linear-gradient(180deg,var(--bg) 0%,#fff4f2 100%)}
.about-strip{background:var(--brand);color:#fff}
.about-strip h2,.about-strip .eyebrow{color:#fff}
.about-strip-grid{display:grid;grid-template-columns:1fr .9fr;gap:40px}
.about-strip-grid .button-row{grid-column:1/-1}
.about-strip-grid p{color:#feecee}
.about-strip .button-secondary{color:#fff;border-color:rgba(255,255,255,.6)}
.about-strip .text-link{color:#fff;text-decoration-color:rgba(255,255,255,.5)}
.site-footer{background:#241f21;color:#d8cccf;padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:60px}
.site-footer h2{font-size:18px;color:#fff;margin-bottom:15px;letter-spacing:0}
.site-footer p{color:#aa9ea2;max-width:520px}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid #41383c;margin-top:42px;padding-top:22px;display:flex;gap:22px;align-items:center;color:#968a8e;font-size:13px}
.footer-bottom a:hover{color:#fff}
.back-top{margin-left:auto;border:0;background:none;color:#c9bdc0;cursor:pointer;padding:8px}
.page-shell{padding:26px 0 88px}
.breadcrumbs{margin:6px 0 24px;color:var(--muted);font-size:13px}
.breadcrumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumbs li{display:flex;gap:8px;align-items:center}
.breadcrumbs li:not(:last-child)::after{content:"/";color:#c1b3b6}
.breadcrumbs a:hover{color:var(--brand)}
.page-hero{display:grid;grid-template-columns:1.08fr .72fr;gap:58px;align-items:center;padding:36px 0 64px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(36px,4.8vw,58px)}
.page-hero p:not(.eyebrow){font-size:18px;color:var(--muted);max-width:700px}
.page-hero figure{margin:0}
.page-hero img{width:100%;aspect-ratio:1.45/1;object-fit:cover;border-radius:var(--radius);background:var(--bg-2)}
.app-hero img{aspect-ratio:1.35/1}
.prose-section{padding:56px 0;border-bottom:1px solid var(--line)}
.prose-section:last-child{border-bottom:0}
.prose-section>p,.prose-section>ul,.prose-section>ol{max-width:820px}
.prose-section p{font-size:17px}
.prose-section h2{font-size:clamp(26px,3vw,38px)}
.prose-section h3{margin-top:28px}
.notice{max-width:840px;border-left:4px solid var(--brand-soft);background:var(--bg-2);padding:20px 22px;margin:28px 0;border-radius:0 12px 12px 0}
.notice-accent{border-left-color:var(--accent);background:#fff1ef}
.notice strong{display:block;color:var(--ink);margin-bottom:6px}
.notice p{margin:0;color:var(--muted);font-size:15px}
.two-col-section{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.65fr);gap:70px;align-items:start}
.side-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:28px;position:sticky;top:104px}
.side-panel h2{font-size:22px}
.side-panel .step-list li{grid-template-columns:42px 1fr;gap:8px}
.side-panel .step-list li span{grid-column:2}
.symptom-list{display:grid;margin:0}
.symptom-list div{padding:14px 0;border-bottom:1px solid var(--line)}
.symptom-list div:last-child{border-bottom:0}
.symptom-list dt{font-weight:750;color:var(--ink)}
.symptom-list dd{margin:4px 0 0;color:var(--muted);font-size:14px}
.media-prose{display:grid;grid-template-columns:.75fr 1.25fr;gap:54px;align-items:center}
.media-prose.reverse{grid-template-columns:1.2fr .8fr}
.media-prose.reverse figure{order:2}
.media-prose figure{margin:0}
.media-prose img,.wide-figure img{width:100%;border-radius:var(--radius);object-fit:cover;background:var(--bg-2)}
.comparison-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:24px}
.comparison-grid>div{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:26px}
.decision-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.decision-grid>div{border:1px solid var(--line);background:#fff;border-radius:var(--radius-sm);padding:24px}
.decision-grid span{display:inline-block;font-size:12px;font-weight:800;border-radius:999px;padding:5px 9px;margin-bottom:16px}
.decision-no{background:#eef5ef;color:#43664c}.decision-maybe{background:#fff0df;color:#8a5a1c}.decision-stop{background:#fbe7e7;color:#9b3838}
.callout-section{display:flex;align-items:center;justify-content:space-between;gap:34px;background:var(--bg-2);border:0;border-radius:var(--radius);padding:34px 38px;margin:46px 0}
.callout-section h2{font-size:28px;margin-bottom:10px}
.callout-section p{margin-bottom:0}
.next-links{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding-top:44px}
.next-links a{border-top:2px solid var(--line);padding:16px 4px;display:grid;gap:4px}
.next-links a:hover{border-color:var(--brand)}
.next-links span{color:var(--muted);font-size:12px}
.next-links strong{color:var(--ink)}
.article-header{padding:46px 0 44px;max-width:900px}
.article-header h1{font-size:clamp(36px,4.8vw,58px)}
.article-lead{font-size:20px}
.wide-figure{margin:32px 0 0}
.wide-figure img{aspect-ratio:2/1}
.diagnostic-table{border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-top:26px}
.table-row{display:grid;grid-template-columns:1fr .9fr 1.6fr}
.table-row span{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--muted)}
.table-row span+span{border-left:1px solid var(--line)}
.table-row.head{background:var(--bg-2);font-weight:760}
.table-row.head span{color:var(--ink)}
.table-row:last-child span{border-bottom:0}
.table-row a{color:var(--brand);font-weight:720}
.search-page{max-width:980px}
.page-search{margin:0 0 30px;background:var(--bg-2);padding:24px;border-radius:16px}
.page-search label{display:block;font-weight:760;margin-bottom:8px}
.page-search>div{display:flex;gap:10px}
.search-form input{flex:1;min-width:0;height:46px;border:1px solid #d8c8cb;border-radius:10px;background:#fff;padding:0 14px;color:var(--ink);outline:none}
.search-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(185,58,74,.1)}
.search-results{display:grid;gap:16px}
.search-results article{padding:24px;border:1px solid var(--line);border-radius:14px;background:#fff}
.search-results article p{font-size:15px;color:var(--muted)}
.tag-links{display:flex;flex-wrap:wrap;gap:10px}
.tag-links a{border:1px solid var(--line);background:#fff;padding:8px 12px;border-radius:999px;color:var(--brand)}
.error-page{text-align:center;padding:110px 0 140px}
.error-code{font-size:86px;line-height:1;color:var(--brand);font-weight:900;letter-spacing:-.06em;margin-bottom:20px}
.error-page h1{font-size:42px}
.error-page .button-row{justify-content:center}
.search-modal[hidden]{display:none !important}
.search-modal{position:fixed;inset:0;z-index:300;display:grid;place-items:start center;padding:12vh 20px 20px}
.search-backdrop{position:absolute;inset:0;background:rgba(43,37,40,.62);backdrop-filter:blur(8px)}
.search-dialog{position:relative;width:min(680px,100%);background:var(--bg);border-radius:22px;padding:28px;box-shadow:0 30px 90px rgba(0,0,0,.22)}
.search-dialog-head{display:flex;align-items:center;justify-content:space-between;gap:20px}
.search-dialog h2{font-size:28px;margin:0}
.search-dialog>p{color:var(--muted);font-size:14px;margin:10px 0 20px}
.search-dialog .search-form{display:flex;gap:10px}
.icon-button{width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;font-size:25px;line-height:1}
.icon-button:hover{border-color:var(--brand)}
@media (max-width:1024px){
  :root{--container:min(100% - 36px,940px)}
  .primary-nav{position:absolute;right:18px;top:68px;width:min(360px,calc(100% - 36px));background:var(--bg);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;padding:10px;display:none;flex-direction:column;align-items:stretch}
  .primary-nav.is-open{display:flex}
  .primary-nav a,.search-open{text-align:left;padding:11px 12px}
  .nav-toggle{display:block}
  .hero-grid,.page-hero{grid-template-columns:1fr;gap:38px}
  .hero{padding-top:58px}
  .hero-media{max-width:760px}
  .card-grid.three{grid-template-columns:repeat(2,1fr)}
  .editorial-split,.editorial-split.reverse{grid-template-columns:1fr 1fr;gap:40px}
  .content-index{grid-template-columns:1fr;gap:30px}
  .mobile-panel{padding:44px 44px 0}
  .two-col-section{grid-template-columns:1fr;gap:28px}
  .side-panel{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>section:first-child{grid-column:1/-1}
}
@media (max-width:768px){
  :root{--container:calc(100% - 28px)}
  .header-inner{height:68px}.brand img{width:40px;height:40px}.brand-text small{display:none}
  h1{font-size:42px}.hero-lead,.article-lead{font-size:17px}
  .hero-facts{grid-template-columns:1fr}.hero-facts div+div{border-top:1px solid var(--line)}
  .section{padding:58px 0}.split-heading{grid-template-columns:1fr;gap:10px;align-items:start}
  .card-grid.three,.card-grid.two{grid-template-columns:1fr}.link-card{min-height:auto}
  .editorial-split,.editorial-split.reverse,.feature-band,.media-prose,.media-prose.reverse{grid-template-columns:1fr;gap:28px}
  .editorial-split.reverse figure,.media-prose.reverse figure{order:0}
  .metric-row{grid-template-columns:1fr 1fr 1fr}
  .mobile-panel{grid-template-columns:1fr;padding:38px 28px 0}.mobile-panel figure{max-width:420px;margin-inline:auto}
  .step-list li{grid-template-columns:44px 1fr;gap:8px}.step-list li span{grid-column:2}
  .about-strip-grid{grid-template-columns:1fr;gap:18px}.about-strip-grid .button-row{grid-column:auto}
  .footer-grid{grid-template-columns:1fr;gap:34px}.footer-grid>section:first-child{grid-column:auto}.footer-bottom{flex-wrap:wrap}.back-top{margin-left:0}
  .page-shell{padding-bottom:64px}.page-hero{padding-top:20px}.page-hero p:not(.eyebrow){font-size:16px}
  .prose-section{padding:42px 0}.prose-section p{font-size:16px}
  .comparison-grid,.decision-grid,.next-links{grid-template-columns:1fr}
  .callout-section{align-items:flex-start;flex-direction:column;padding:28px}
  .table-row{grid-template-columns:1fr}.table-row.head{display:none}.table-row span{border-left:0!important}.table-row span:nth-child(1){color:var(--ink);font-weight:750;padding-bottom:4px}.table-row span:nth-child(2){padding-top:4px;padding-bottom:4px}.table-row span:nth-child(3){padding-top:4px}
  .page-search>div,.search-dialog .search-form{flex-direction:column}
}
@media (max-width:600px){
  h1{font-size:36px}h2{font-size:28px}
  .hero{padding:44px 0 40px}.hero-grid{gap:30px}.hero-media img{border-radius:22px}.hero-media figcaption{position:static;background:transparent;color:var(--muted);padding:10px 2px}
  .button-row{align-items:stretch}.button-row .button{flex:1 1 100%}
  .metric-row{grid-template-columns:1fr}.mobile-panel{border-radius:20px;padding-inline:22px}
  .page-hero h1,.article-header h1{font-size:36px}.page-hero{gap:28px}.page-hero img{border-radius:18px}
  .search-modal{padding:72px 12px 12px}.search-dialog{padding:22px}
}
@media (max-width:375px){
  :root{--container:calc(100% - 22px)}
  .brand-text strong{font-size:17px}.nav-toggle{width:40px}
  h1,.page-hero h1,.article-header h1{font-size:32px}
  .section{padding:50px 0}.link-card{padding:22px}
  .mobile-panel{padding:30px 18px 0}.prose-section{padding:36px 0}
}