:root{
  --bg:#f7f6f3;
  --panel:#ffffff;
  --ink:#1d2430;
  --muted:#6a7280;
  --line:rgba(29,36,48,.12);
  --soft:#ece8df;
  --accent:#637086;
  --accent-2:#a89c8a;
  --shadow:0 24px 70px rgba(29,36,48,.08);
  --radius:28px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font:inherit}
.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}
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,246,243,.82);backdrop-filter:blur(22px);border-bottom:1px solid var(--line)}
.nav-wrap{max-width:var(--max);margin:auto;padding:18px 28px 10px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:12px;font-weight:700;letter-spacing:.04em}
.logo img{border-radius:14px;box-shadow:0 10px 30px rgba(29,36,48,.08)}
.main-nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:#3b4452}
.main-nav a{padding:9px 14px;border-radius:999px;transition:.22s ease}
.main-nav a:hover{background:var(--panel);box-shadow:0 10px 24px rgba(29,36,48,.06)}
.search-shell{max-width:var(--max);margin:0 auto;padding:0 28px 16px;display:grid;grid-template-columns:1fr auto;gap:10px;align-items:start}
.search-shell input{border:1px solid var(--line);border-radius:999px;padding:13px 18px;background:rgba(255,255,255,.72);outline:none;color:var(--ink)}
.search-shell input:focus{border-color:rgba(99,112,134,.5);box-shadow:0 0 0 4px rgba(99,112,134,.1)}
.search-shell button,.btn{border:0;border-radius:999px;padding:13px 20px;background:var(--ink);color:#fff;cursor:pointer;transition:.22s ease;display:inline-flex;align-items:center;justify-content:center}
.search-shell button:hover,.btn:hover{transform:translateY(-1px);box-shadow:0 16px 30px rgba(29,36,48,.18)}
.search-note{grid-column:1/-1;margin:0;color:var(--muted);font-size:13px;min-height:22px}
.hero{max-width:var(--max);margin:0 auto;padding:86px 28px 72px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);gap:52px;align-items:center}
.eyebrow{text-transform:uppercase;letter-spacing:.22em;font-size:12px;color:var(--accent);font-weight:700;margin:0 0 14px}
h1,h2,h3{line-height:1.18;margin:0;color:var(--ink);letter-spacing:-.03em}
h1{font-size:clamp(42px,7vw,86px);max-width:850px}
h2{font-size:clamp(30px,4vw,54px)}
h3{font-size:22px}.lead{font-size:clamp(17px,2vw,22px);color:#4a5361;max-width:760px;margin:24px 0 0}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}.btn.secondary{background:transparent;color:var(--ink);border:1px solid var(--line)}
.domain-pill{margin-top:24px;display:inline-flex;gap:8px;align-items:center;border:1px solid var(--line);background:rgba(255,255,255,.6);border-radius:999px;padding:10px 14px;color:var(--muted);font-size:14px}
.hero-media{position:relative}.hero-media img{border-radius:42px;box-shadow:var(--shadow);aspect-ratio:16/10;object-fit:cover}.floating-card{position:absolute;right:24px;bottom:24px;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.5);border-radius:24px;padding:18px 20px;box-shadow:0 18px 50px rgba(29,36,48,.12);max-width:260px}.floating-card strong{display:block;font-size:28px}.floating-card span{color:var(--muted);font-size:14px}
.section{max-width:var(--max);margin:0 auto;padding:72px 28px}.section.muted{max-width:none;background:rgba(255,255,255,.48);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.section.muted>*{max-width:var(--max);margin-left:auto;margin-right:auto}.section-head{display:grid;grid-template-columns:minmax(0,.9fr) minmax(300px,.7fr);gap:36px;align-items:end;margin-bottom:34px}.section-head p:last-child{color:var(--muted);margin:0;font-size:17px}.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}.intro-grid img{border-radius:34px;box-shadow:var(--shadow);object-fit:cover}.intro-copy{background:rgba(255,255,255,.62);border:1px solid var(--line);border-radius:var(--radius);padding:36px}.intro-copy p{color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{background:rgba(255,255,255,.68);border:1px solid var(--line);border-radius:var(--radius);padding:28px;min-height:240px;transition:.22s ease}.card:hover,.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);background:#fff}.card .subtitle{display:inline-flex;margin-bottom:18px;color:var(--accent);font-weight:700;font-size:13px;letter-spacing:.08em}.card p{color:var(--muted);margin-bottom:0}.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.video-card{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:30px;overflow:hidden;box-shadow:0 20px 48px rgba(29,36,48,.06);transition:.24s ease}.video-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.video-shell{position:relative;background:#e9e7e1;aspect-ratio:16/10;overflow:hidden}.video-shell video,.video-shell img{width:100%;height:100%;object-fit:cover}.video-shell video{display:block}.play-badge{position:absolute;inset:0;display:grid;place-items:center;opacity:0;transition:.24s ease;background:linear-gradient(180deg,rgba(29,36,48,0),rgba(29,36,48,.24))}.video-card:hover .play-badge,.video-card:focus-within .play-badge,.video-card.is-active .play-badge{opacity:1}.play-badge span{width:68px;height:68px;border-radius:999px;background:rgba(255,255,255,.88);display:grid;place-items:center;box-shadow:0 20px 40px rgba(29,36,48,.18)}.play-badge span:before{content:"";display:block;margin-left:5px;border-left:18px solid var(--accent);border-top:12px solid transparent;border-bottom:12px solid transparent}.video-body{padding:22px}.video-body p{color:var(--muted);margin:12px 0 16px}.meta{display:flex;gap:10px;flex-wrap:wrap;color:#596272;font-size:13px}.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:15px}.tag{font-size:12px;border:1px solid var(--line);border-radius:999px;padding:5px 9px;color:var(--accent);background:#fbfaf8}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.stat{background:rgba(255,255,255,.68);border:1px solid var(--line);border-radius:28px;padding:28px;text-align:center}.stat strong{font-size:clamp(30px,4vw,48px);display:block}.stat span{color:var(--muted)}.quote-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.quote{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px}.quote blockquote{margin:0;color:#3b4452}.quote cite{display:block;margin-top:18px;color:var(--muted);font-style:normal;font-size:14px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden}.faq-item button{width:100%;border:0;background:transparent;color:var(--ink);padding:20px 22px;display:flex;justify-content:space-between;gap:20px;cursor:pointer;text-align:left;font-weight:700}.faq-item button:after{content:"+";font-size:22px;color:var(--accent)}.faq-item.open button:after{content:"−"}.faq-answer{display:none;padding:0 22px 20px;color:var(--muted)}.faq-item.open .faq-answer{display:block}.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px}.contact-panel,.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}.contact-panel p{color:var(--muted)}.contact-form{display:grid;gap:14px}.contact-form input,.contact-form textarea{width:100%;border:1px solid var(--line);border-radius:18px;background:#faf9f6;padding:14px 16px;outline:none}.contact-form textarea{min-height:132px;resize:vertical}.form-note{color:var(--muted);font-size:13px;margin:0}.mini-cards{grid-template-columns:repeat(5,1fr)}.mini-card{display:block;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;min-height:170px}.mini-card span{font-weight:800}.mini-card p{color:var(--muted);margin-bottom:0}.site-footer{background:#151922;color:#f7f6f3;margin-top:60px}.footer-grid{max-width:var(--max);margin:auto;padding:56px 28px;display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:36px}.site-footer p,.site-footer a{color:rgba(247,246,243,.75)}.site-footer h2{font-size:18px;color:#fff;margin-bottom:12px}.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:10px}.footer-logo{color:#fff}.update-time{margin-top:18px}.page-hero{max-width:var(--max);margin:auto;padding:74px 28px 36px}.page-hero h1{font-size:clamp(36px,5vw,68px)}.content-prose{max-width:920px;margin:0 auto;padding:20px 28px 70px}.content-prose p{color:#4d5664;font-size:18px}.content-prose ul{color:#4d5664}.content-prose li{margin:10px 0}.notice{padding:18px 20px;border:1px solid var(--line);border-radius:22px;background:#fff;color:var(--muted)}
@media (max-width:980px){.hero,.intro-grid,.contact-grid,.section-head{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,1fr)}.video-grid{grid-template-columns:repeat(2,1fr)}.quote-grid{grid-template-columns:repeat(2,1fr)}.mini-cards{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.hero{padding-top:58px}.floating-card{position:static;margin-top:16px}.hero-media img{border-radius:30px}}
@media (max-width:640px){.nav-wrap{align-items:flex-start;flex-direction:column}.main-nav{width:100%;overflow:auto;flex-wrap:nowrap;padding-bottom:2px}.search-shell{grid-template-columns:1fr}.search-shell button{width:100%}.hero,.section,.page-hero{padding-left:18px;padding-right:18px}.cards,.video-grid,.quote-grid,.mini-cards,.stats{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;padding-left:18px;padding-right:18px}h1{font-size:42px}.section{padding-top:54px;padding-bottom:54px}.contact-panel,.contact-form,.intro-copy{padding:24px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}