:root{--bg:#f7f8f7;--surface:#fff;--text:#18201f;--muted:#5f6c69;--line:#dce5e2;--primary:#176b64;--accent:#e59a45;--soft:#edf5f3}
@media(prefers-color-scheme:dark){:root{--bg:#0f1716;--surface:#172220;--text:#eef6f4;--muted:#b3c3bf;--line:#435a55;--primary:#72d1c7;--accent:#f0b66f;--soft:#1d302d}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 -apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Microsoft YaHei","Segoe UI",sans-serif}.page{max-width:880px;margin:0 auto;padding:28px 18px 64px}.hero{padding:38px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(135deg,var(--surface),var(--soft))}.badge{display:inline-block;padding:5px 10px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--primary);font-size:13px;font-weight:700}.hero h1{margin:15px 0 6px;font-size:clamp(32px,6vw,48px);line-height:1.12}.hero p,.meta{color:var(--muted)}.meta{font-size:14px}.language{display:flex;gap:8px;margin:20px 0}.language button{padding:8px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text);font:inherit;cursor:pointer}.language button.active{border-color:var(--primary);background:var(--primary);color:var(--surface)}.language-block{display:none}.language-block.active{display:block}section{margin:16px 0;padding:24px 26px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}h2{margin:0 0 10px;color:var(--primary);font-size:21px}h3{margin:18px 0 6px;font-size:16px}p{margin:9px 0}ul{margin:8px 0;padding-left:22px}li+li{margin-top:7px}.callout{padding:14px 16px;border-left:4px solid var(--accent);border-radius:10px;background:var(--soft)}a{color:var(--primary)}.contact{display:inline-flex;align-items:center;margin-top:6px;padding:10px 15px;border-radius:12px;background:var(--primary);color:var(--surface);text-decoration:none;font-weight:700}.contact:hover{filter:brightness(.95)}footer{margin-top:30px;text-align:center;color:var(--muted);font-size:13px}@media(max-width:600px){.hero{padding:27px 22px}section{padding:21px 18px}}