:root{
  --bg:#f7f5f0;
  --panel:#ffffff;
  --panel-soft:#f2efe8;
  --text:#111827;
  --muted:#64748b;
  --line:rgba(15,23,42,.10);
  --strong:#0f172a;
  --radius:28px;
  --shadow:0 24px 80px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img,video{max-width:100%;display:block}
button,input,textarea{font:inherit}
.container{width:min(1160px,calc(100% - 40px));margin-inline:auto}
.narrow{width:min(880px,calc(100% - 40px))}
.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:30;background:rgba(247,245,240,.86);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.header-inner{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand-logo{display:inline-flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.02em}
.brand-logo img{width:82px;height:auto;border-radius:18px}
.main-nav{display:flex;align-items:center;gap:22px;color:#334155;font-size:15px}
.main-nav a{position:relative;padding:6px 0}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--strong);transform:scaleX(0);transform-origin:left;transition:transform .24s ease}
.main-nav a:hover::after{transform:scaleX(1)}
.nav-toggle{display:none;border:1px solid var(--line);background:var(--panel);border-radius:999px;width:42px;height:42px}
.search-wrap{padding:0 0 16px}
.search-form{display:flex;gap:10px;background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:999px;padding:8px;box-shadow:0 12px 40px rgba(15,23,42,.05)}
.search-form input{flex:1;border:0;background:transparent;padding:10px 16px;outline:none;color:var(--text)}
.search-form button,.btn{border:0;border-radius:999px;padding:12px 20px;font-weight:700;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
.search-form button,.btn.primary{background:var(--strong);color:#fff;box-shadow:0 14px 40px rgba(15,23,42,.18)}
.btn.ghost{background:#fff;color:var(--strong);border:1px solid var(--line)}
.search-form button:hover,.btn:hover{transform:translateY(-2px)}
.search-note,.domain-line{margin:8px 16px 0;color:var(--muted);font-size:14px}
.section-soft{background:linear-gradient(135deg,#f7f5f0 0%,#ece7dc 100%)}
.hero{min-height:74vh;display:grid;align-items:center;padding:82px 0}
.hero-grid{display:grid;grid-template-columns:1fr .92fr;gap:64px;align-items:center}
.eyebrow{margin:0 0 12px;color:#64748b;text-transform:uppercase;letter-spacing:.14em;font-size:12px;font-weight:800}
h1,h2,h3{line-height:1.12;letter-spacing:-.04em;color:var(--strong);margin:0}
h1{font-size:clamp(42px,7vw,88px)}
h2{font-size:clamp(30px,4vw,54px)}
h3{font-size:clamp(22px,2vw,28px)}
.hero-copy p:not(.eyebrow):not(.domain-line){font-size:18px;color:#475569;margin:24px 0 0;max-width:680px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.hero-visual{margin:0;position:relative;border-radius:42px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.hero-visual img{aspect-ratio:5/3;object-fit:cover}
figcaption{position:absolute;left:18px;right:18px;bottom:16px;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.7);border-radius:999px;padding:8px 14px;color:#475569;font-size:12px}
section.container,.split-section,.stats-panel,.contact-panel,.social-panel{padding:90px 0}
.split-section{display:grid;grid-template-columns:.8fr 1fr;gap:60px;align-items:start;border-bottom:1px solid var(--line)}
.split-section p:last-child{font-size:20px;color:#475569;margin:0}
.section-heading{margin:0 0 34px;max-width:780px}
.section-heading p:not(.eyebrow){color:#64748b}
.inline-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;max-width:none}
.text-link{font-weight:800;border-bottom:1px solid var(--strong)}
.feature-grid,.video-grid,.case-grid,.review-grid,.share-grid,.step-grid,.stats-grid{display:grid;gap:22px}
.feature-grid{grid-template-columns:repeat(4,1fr)}
.feature-card,.video-card,.case-card,blockquote,details,.step-grid article,.article-list article{background:rgba(255,255,255,.78);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 18px 50px rgba(15,23,42,.05);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease}
.feature-card:hover,.video-card:hover,.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(15,23,42,.18)}
.feature-icon{display:inline-grid;place-items:center;width:54px;height:54px;border-radius:18px;background:#f1f5f9;color:#0f172a;font-weight:800;margin-bottom:18px}
.video-grid{grid-template-columns:repeat(3,1fr)}
.video-card{padding:0;overflow:hidden}
.video-card a{display:block;height:100%}
.video-frame{position:relative;margin:0;background:#e2e8f0;overflow:hidden}
.video-frame video{width:100%;aspect-ratio:16/10;object-fit:cover;background:#e2e8f0}
.play-button{position:absolute;inset:0;margin:auto;width:64px;height:64px;border-radius:50%;background:rgba(15,23,42,.74);opacity:0;transform:scale(.9);transition:opacity .24s ease,transform .24s ease;box-shadow:0 18px 50px rgba(15,23,42,.22)}
.play-button::before{content:"";position:absolute;left:25px;top:18px;border-top:14px solid transparent;border-bottom:14px solid transparent;border-left:20px solid #fff}
.video-card:hover .play-button{opacity:1;transform:scale(1)}
.video-body{padding:24px}
.video-body p{color:#64748b;margin:14px 0 0}
.video-metrics,.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.video-metrics span,.tag-list span{font-size:12px;color:#475569;background:#f8fafc;border:1px solid var(--line);border-radius:999px;padding:6px 10px}
.tag-list span{color:#0f172a;background:#eef2ff}
.stats-panel{background:#0f172a;color:#fff;border-radius:42px;padding:54px;margin-top:70px;margin-bottom:70px}
.stats-panel h2,.stats-panel .eyebrow{color:#fff}
.stats-grid{grid-template-columns:repeat(4,1fr)}
.stats-grid div{padding:22px;border:1px solid rgba(255,255,255,.14);border-radius:24px;background:rgba(255,255,255,.05)}
.stats-grid strong{display:block;font-size:34px;letter-spacing:-.04em}
.stats-grid span{color:#cbd5e1;font-size:14px}
.case-grid{grid-template-columns:repeat(3,1fr)}
.case-card{overflow:hidden;padding:0}
.case-card img{aspect-ratio:16/10;object-fit:cover}
.case-card div{padding:26px}
.large-card{min-height:100%}
.review-grid{grid-template-columns:repeat(3,1fr)}
blockquote{margin:0}
blockquote p{margin:0;color:#334155}
blockquote footer{margin-top:18px;color:#64748b;font-size:14px}
.faq-list{display:grid;gap:14px}
details{padding:0;overflow:hidden}
summary{list-style:none;cursor:pointer;padding:22px 26px;font-weight:800;color:#0f172a}
summary::-webkit-details-marker{display:none}
details p{padding:0 26px 24px;margin:0;color:#475569}
.contact-panel{display:grid;grid-template-columns:.82fr 1fr;gap:54px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:42px;padding:46px;margin-top:80px;margin-bottom:80px;box-shadow:var(--shadow)}
.contact-form{display:grid;gap:14px}
.contact-form label{display:grid;gap:8px;color:#334155;font-weight:700}
.contact-form input,.contact-form textarea{border:1px solid var(--line);border-radius:18px;padding:14px 16px;background:#f8fafc;outline:none;color:#0f172a}
.form-note{min-height:24px;color:#475569;margin:0}
.social-panel{padding-top:0}
.share-grid{grid-template-columns:repeat(5,1fr)}
.share-btn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:14px 16px;cursor:pointer;font-weight:800;color:#0f172a}
.page-hero{padding:78px 0 70px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(38px,6vw,72px)}
.page-hero p:last-child{color:#475569;font-size:18px}
.breadcrumb{display:flex;gap:10px;color:#64748b;font-size:14px;margin-bottom:28px}
.breadcrumb a{font-weight:800;color:#0f172a}
.step-grid{grid-template-columns:repeat(4,1fr)}
.step-grid article span{display:inline-block;font-weight:900;color:#94a3b8;margin-bottom:14px}
.article-list{display:grid;gap:18px}
.article-list article p,.guide-panel p{color:#475569}
.site-footer{background:#0f172a;color:#e2e8f0;padding:56px 0;margin-top:70px}
.footer-grid{display:grid;grid-template-columns:1.2fr .6fr .8fr;gap:38px;align-items:start}
.footer-grid p{color:#cbd5e1;margin:12px 0 0}
.footer-grid nav{display:grid;gap:12px}
.footer-logo img{background:#fff}
@media (max-width:980px){
  .nav-toggle{display:inline-grid;place-items:center}
  .main-nav{position:absolute;left:20px;right:20px;top:76px;display:none;flex-direction:column;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}
  .main-nav.is-open{display:flex}
  .hero-grid,.split-section,.contact-panel{grid-template-columns:1fr;gap:34px}
  .feature-grid,.video-grid,.case-grid,.review-grid,.stats-grid,.share-grid,.step-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .container,.narrow{width:min(100% - 28px,1160px)}
  .header-inner{height:68px}
  .brand-logo span{display:none}
  .search-form{border-radius:24px;align-items:stretch;flex-direction:column}
  .hero{padding:54px 0;min-height:auto}
  section.container,.split-section,.contact-panel,.social-panel{padding:58px 0}
  .feature-grid,.video-grid,.case-grid,.review-grid,.stats-grid,.share-grid,.step-grid,.footer-grid{grid-template-columns:1fr}
  .inline-heading{align-items:flex-start;flex-direction:column}
  .stats-panel,.contact-panel{border-radius:28px;padding:28px;margin-top:44px;margin-bottom:44px}
  h1{font-size:42px}
  h2{font-size:32px}
  figcaption{position:static;border-radius:0;background:#fff;border:0}
}