:root{
  --bg:#f7f5ef;
  --panel:#ffffff;
  --ink:#161616;
  --muted:#6b6b6b;
  --line:rgba(22,22,22,.1);
  --soft:rgba(22,22,22,.06);
  --accent:#1f4d3a;
  --accent-2:#b98f4a;
  --radius:28px;
  --shadow:0 24px 70px rgba(20,20,20,.08);
}
*{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%;display:block}
button,input,textarea{font:inherit}
.site-header{position:sticky;top:0;z-index:40;background:rgba(247,245,239,.86);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-wrap{max-width:1180px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 22px}
.brand-logo{display:inline-flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.08em}
.brand-logo img{border-radius:14px;box-shadow:0 10px 24px rgba(31,77,58,.16)}
.nav-links{display:flex;align-items:center;gap:24px;color:var(--muted);font-size:15px}
.nav-links a{position:relative;padding:8px 0;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:0;bottom:2px;width:0;height:1px;background:var(--ink);transition:width .28s ease}
.nav-links a:hover::after{width:100%}
.nav-toggle{display:none;border:0;background:var(--panel);border-radius:999px;width:42px;height:42px;box-shadow:var(--shadow)}
.search-strip{max-width:1180px;margin:0 auto;padding:0 22px 18px;color:var(--muted)}
.search-strip label{display:block;font-size:13px;margin-bottom:8px;letter-spacing:.1em;color:var(--ink);font-weight:700}
.search-box{display:flex;gap:10px;background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:999px;padding:8px;box-shadow:0 16px 40px rgba(20,20,20,.05)}
.search-box input{flex:1;border:0;background:transparent;padding:10px 14px;outline:none;min-width:0}
.search-box button,.btn{border:0;border-radius:999px;padding:11px 20px;background:var(--ink);color:#fff;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease}
.search-box button:hover,.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(20,20,20,.16)}
.search-hint{margin:8px 4px 0;font-size:13px}
main{overflow:hidden}
.container{max-width:1180px;margin:0 auto;padding:0 22px}
.hero{min-height:calc(100vh - 138px);display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);gap:54px;align-items:center;padding:72px 22px 84px;max-width:1180px;margin:0 auto}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--accent);font-weight:800;letter-spacing:.14em;text-transform:uppercase;font-size:13px}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--accent)}
h1,h2,h3,h4{line-height:1.18;margin:0;color:var(--ink)}
h1{font-size:clamp(42px,7vw,86px);letter-spacing:-.06em;margin-top:18px}
h2{font-size:clamp(30px,4vw,54px);letter-spacing:-.045em}
h3{font-size:22px;letter-spacing:-.02em}
p{margin:0;color:var(--muted)}
.hero p{font-size:18px;margin-top:24px;max-width:640px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:36px}
.btn.secondary{background:transparent;color:var(--ink);border:1px solid var(--line)}
.hero-card{position:relative;border-radius:42px;overflow:hidden;box-shadow:var(--shadow);background:var(--panel);padding:12px}
.hero-card img{border-radius:34px;aspect-ratio:4/5;object-fit:cover;width:100%}
.floating-note{position:absolute;left:28px;right:28px;bottom:28px;padding:18px 20px;border-radius:24px;background:rgba(255,255,255,.78);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.62)}
.section{padding:92px 0}
.section-head{display:grid;grid-template-columns:minmax(0,.82fr) minmax(260px,.55fr);gap:36px;align-items:end;margin-bottom:42px}
.section-head p{font-size:16px}
.kicker{color:var(--accent);font-weight:800;letter-spacing:.13em;font-size:13px;margin-bottom:12px}
.panel{background:rgba(255,255,255,.66);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.about-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:38px;padding:18px;align-items:center}
.about-panel img{border-radius:22px;aspect-ratio:5/4;object-fit:cover;width:100%}
.about-copy{padding:26px 26px 26px 0}
.about-copy p{margin-top:18px}
.domain-badge{display:inline-flex;align-items:center;margin-top:22px;padding:10px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:14px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.card{padding:28px;border-radius:var(--radius);background:rgba(255,255,255,.72);border:1px solid var(--line);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(31,77,58,.22)}
.card .num{font-size:13px;color:var(--accent-2);letter-spacing:.16em;font-weight:800;margin-bottom:20px}
.card p{margin-top:12px}
.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.video-card{position:relative;overflow:hidden;border-radius:30px;background:#fff;border:1px solid var(--line);box-shadow:0 18px 48px rgba(20,20,20,.06)}
.video-thumb{position:relative;overflow:hidden;background:var(--soft)}
.video-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease;filter:saturate(.94)}
.video-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.88);width:66px;height:66px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.82);opacity:0;transition:opacity .28s ease,transform .28s ease;box-shadow:0 20px 45px rgba(0,0,0,.16)}
.video-play::before{content:"";margin-left:5px;border-left:18px solid var(--ink);border-top:12px solid transparent;border-bottom:12px solid transparent}
.video-card:hover .video-play{opacity:1;transform:translate(-50%,-50%) scale(1)}
.video-card:hover .video-thumb img{transform:scale(1.045)}
.video-body{padding:22px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.tag{font-size:12px;color:var(--accent);border:1px solid rgba(31,77,58,.18);background:rgba(31,77,58,.06);padding:5px 9px;border-radius:999px}
.metrics{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:13px;border-top:1px solid var(--line);padding-top:14px;margin-top:14px}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.stat{padding:28px;background:var(--ink);color:#fff;border-radius:28px}
.stat strong{display:block;font-size:38px;letter-spacing:-.04em}
.stat span{color:rgba(255,255,255,.72)}
.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.review{padding:26px;border-radius:26px;background:#fff;border:1px solid var(--line)}
.review blockquote{margin:0;color:var(--muted)}
.review .who{margin-top:20px;color:var(--ink);font-weight:800}
.faq-list{display:grid;gap:12px}
details{border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.72);padding:20px 22px}
summary{cursor:pointer;font-weight:800;list-style:none}
summary::-webkit-details-marker{display:none}
details p{margin-top:12px}
.contact-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;padding:24px}
.info-list{display:grid;gap:14px;margin-top:22px}
.info-list span{display:block;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;padding:14px 16px;background:#fff;outline:none}
.contact-form textarea{min-height:132px;resize:vertical}
.page-hero{padding:86px 22px 56px;max-width:1180px;margin:0 auto}
.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:14px;margin-bottom:18px}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:26px;align-items:start}
.article-panel{padding:36px}
.article-panel h2,.article-panel h3{margin-top:28px;margin-bottom:14px}
.article-panel p{margin-bottom:12px}
.side-panel{padding:24px;position:sticky;top:150px}
.side-panel ul{margin:14px 0 0;padding-left:18px;color:var(--muted)}
.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:22px}
.gallery figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:26px;overflow:hidden}
.gallery img{aspect-ratio:16/11;object-fit:cover;width:100%}
.gallery figcaption{padding:16px;color:var(--muted);font-size:14px}
.site-footer{margin-top:70px;background:#111;color:#fff;padding:56px 22px 26px}
.site-footer p,.site-footer a,.site-footer span{color:rgba(255,255,255,.72)}
.footer-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1.15fr .75fr .95fr;gap:42px}
.footer-logo span{color:#fff}.footer-logo img{box-shadow:none}
.footer-links{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.site-footer h2{font-size:18px;color:#fff;margin-bottom:12px;letter-spacing:0}
.footer-bottom{max-width:1180px;margin:36px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14px}
.fade-up{animation:fadeUp .72s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
@media (max-width:960px){
  .nav-toggle{display:block}.nav-links{display:none;position:absolute;left:22px;right:22px;top:76px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}.nav-links.is-open{display:flex}
  .hero,.about-panel,.section-head,.contact-panel,.content-layout{grid-template-columns:1fr}.hero{min-height:auto;padding-top:54px}.about-copy{padding:0 8px 14px}.side-panel{position:static}.video-grid,.grid-3,.review-grid{grid-template-columns:1fr 1fr}.grid-4,.stats{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .search-box{border-radius:24px;flex-direction:column}.search-box button{width:100%}h1{font-size:44px}.section{padding:68px 0}.video-grid,.grid-3,.grid-4,.stats,.review-grid,.footer-grid,.gallery{grid-template-columns:1fr}.hero-actions{flex-direction:column}.btn{text-align:center}.contact-panel,.article-panel{padding:22px}.footer-bottom{display:grid}.floating-note{left:18px;right:18px;bottom:18px}
}