:root{
    --bg:#f7f8fb;
    --card:#ffffff;
    --text:#1f2937;
    --muted:#667085;
    --brand:#2f8f5b;
    --brand-dark:#176b43;
    --soft:#e8f5ee;
    --line:#e6eaf0;
    --warn:#9b5b00;
    --shadow:0 12px 40px rgba(31,41,55,.08);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-header{background:linear-gradient(180deg,#ffffff 0%,#f4fbf7 100%);border-bottom:1px solid var(--line);position:relative;z-index:10}
.top-strip{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;padding:8px 20px;background:#10251a;color:#eaf8ef;font-size:13px}
.header-main{max-width:1180px;margin:0 auto;padding:22px 20px 14px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand-logo{display:inline-flex;align-items:center;gap:12px;font-weight:800;color:var(--brand-dark)}
.brand-logo-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:15px;background:linear-gradient(135deg,#5ec98d,#d7f8b9);color:#0d3e25;box-shadow:var(--shadow)}
.brand-logo-text{font-size:26px;letter-spacing:.04em}
.header-slogan{margin:0;color:var(--muted)}
.main-nav{max-width:1180px;margin:0 auto;display:flex;gap:10px;flex-wrap:wrap;padding:0 20px 16px}
.main-nav a{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:700;color:#234335}
.main-nav a.is-active,.main-nav a:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.search-box{max-width:1180px;margin:0 auto;padding:0 20px 22px;display:grid;grid-template-columns:1fr auto;gap:10px}
.search-box input{border:1px solid var(--line);border-radius:14px;padding:14px 16px;font-size:16px;background:#fff}
.search-box button,.btn,.interaction button,.form-card button{border:0;border-radius:14px;background:var(--brand);color:#fff;font-weight:800;padding:12px 16px;cursor:pointer;box-shadow:0 8px 20px rgba(47,143,91,.24)}
.search-tip{grid-column:1/-1;margin:0;color:var(--muted);font-size:13px}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;clip:rect(0,0,0,0);overflow:hidden}
main{max-width:1180px;margin:0 auto;padding:28px 20px 60px}.hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:24px;align-items:stretch}.hero-card,.panel,.module-card,.video-card,.author-card,.comment-card,.faq-card,.form-card{background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}
.hero-card{padding:32px}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:var(--soft);color:var(--brand-dark);font-weight:800;font-size:14px}.hero h1{font-size:clamp(30px,5vw,54px);line-height:1.12;margin:18px 0 14px}.hero p{color:var(--muted);margin:0 0 16px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.btn.secondary{background:#fff;color:var(--brand-dark);border:1px solid var(--brand);box-shadow:none}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.stat{padding:14px;border-radius:18px;background:#f6faf8;border:1px solid #dceee4}.stat strong{display:block;font-size:22px;color:var(--brand-dark)}
.panel{padding:22px}.panel h2,.section-head h2{margin:0 0 8px;font-size:26px}.news-list{display:grid;gap:12px}.news-list article{padding:14px;border:1px solid var(--line);border-radius:18px;background:#fcfdfc}.meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin:34px 0 16px}.section-head p{color:var(--muted);margin:0}.more-link{font-weight:800;color:var(--brand-dark)}.module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.module-card{padding:22px}.module-card h3{margin:0 0 8px;font-size:22px;color:var(--brand-dark)}.module-card ul{padding-left:20px;margin:12px 0}.module-card li{margin:6px 0}.heat{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.heat span,.tag{display:inline-flex;border-radius:999px;background:#f1f7f4;color:#255642;padding:5px 10px;font-size:13px;font-weight:700}.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.video-card{overflow:hidden}.video-thumb{position:relative;aspect-ratio:16/10;background:#dbeee4;overflow:hidden}.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}.video-card:hover .video-thumb img{transform:scale(1.06)}.play-button{position:absolute;inset:0;margin:auto;width:58px;height:58px;border-radius:50%;background:rgba(16,37,26,.82);display:grid;place-items:center;color:#fff;opacity:0;transform:scale(.85);transition:.25s ease}.video-card:hover .play-button,.video-card:focus-within .play-button{opacity:1;transform:scale(1)}.play-button::before{content:"";border-top:12px solid transparent;border-bottom:12px solid transparent;border-left:18px solid #fff;margin-left:4px}.video-body{padding:16px}.video-body h3{font-size:18px;margin:0 0 8px}.video-body p{color:var(--muted);font-size:14px;margin:0 0 12px}.tags{display:flex;gap:6px;flex-wrap:wrap}.interaction{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.interaction button{padding:8px 10px;border-radius:10px;background:#edf7f1;color:#176b43;box-shadow:none}.interaction a{padding:8px 10px;border-radius:10px;background:#f3f4f6;color:#344054;font-weight:800}.author-grid,.comment-grid,.faq-grid,.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.author-card,.comment-card,.faq-card{padding:20px}.author-card h3,.comment-card h3,.faq-card h3{margin-top:0;color:var(--brand-dark)}.form-card{padding:24px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.form-grid label{display:grid;gap:6px;font-weight:800}.form-grid input,.form-grid textarea,.form-grid select{border:1px solid var(--line);border-radius:12px;padding:12px;font:inherit}.form-grid textarea{min-height:120px;grid-column:1/-1}.rules-list{display:grid;gap:12px}.rules-list li{padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line)}.notice{padding:16px;border-radius:18px;background:#fff7e6;border:1px solid #ffd38a;color:var(--warn)}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:18px}.breadcrumb a{color:var(--brand-dark);font-weight:800}.site-footer{background:#10251a;color:#dceee4;padding:38px 20px}.footer-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:24px}.footer-grid a{display:block;color:#f2fff7;margin:8px 0}.site-footer h2{font-size:18px;color:#fff}.footer-logo .brand-logo-text{color:#f2fff7}.copyright{max-width:1180px;margin:26px auto 0;color:#b9d4c4}.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:#10251a;color:#fff;padding:12px 18px;border-radius:999px;opacity:0;pointer-events:none;transition:.25s ease;z-index:50}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media (max-width:960px){.hero,.module-grid,.video-grid,.author-grid,.comment-grid,.faq-grid,.category-grid,.footer-grid{grid-template-columns:1fr 1fr}.header-main{align-items:flex-start;flex-direction:column}.stats{grid-template-columns:1fr 1fr 1fr}}
@media (max-width:640px){.search-box,.form-grid{grid-template-columns:1fr}.hero,.module-grid,.video-grid,.author-grid,.comment-grid,.faq-grid,.category-grid,.footer-grid{grid-template-columns:1fr}.stats{grid-template-columns:1fr}.main-nav{overflow-x:auto;flex-wrap:nowrap}.main-nav a{white-space:nowrap}.hero-card{padding:24px}.section-head{display:block}.top-strip{justify-content:flex-start}.brand-logo-text{font-size:22px}}