:root{--ink:#1d2a30;--muted:#5d6b72;--bg:#fbf8f2;--card:#fff;--line:#e8e1d6;--accent:#1f6f5c;--radius:18px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
a{color:var(--accent)}
.wrap{max-width:960px;margin:0 auto;padding:0 24px}
header.site{background:linear-gradient(135deg,var(--dark),var(--accent));color:#fff;padding:18px 0}
header.site .wrap{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
header.site a{color:#fff;text-decoration:none;opacity:.92}
header.site .brand{font-weight:800;font-size:18px;letter-spacing:.2px}
header.site nav{margin-left:auto;display:flex;gap:18px;font-size:14px;flex-wrap:wrap}
.lang{display:flex;gap:6px;margin-left:10px}
.lang button{border:1px solid rgba(255,255,255,.5);background:transparent;color:#fff;border-radius:999px;padding:4px 12px;font-size:13px;cursor:pointer}
.lang button.active,html[data-lang="zh"] [data-lang-btn="zh"],html[data-lang="en"] [data-lang-btn="en"]{background:#fff;color:var(--dark);border-color:#fff}
.hero{padding:64px 0 36px;background:radial-gradient(120% 120% at 10% 0%,color-mix(in srgb,var(--accent) 12%,transparent),transparent 60%)}
.hero .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.hero img.icon{width:96px;height:96px;border-radius:24px;box-shadow:0 12px 30px rgba(0,0,0,.16)}
h1{font-size:42px;line-height:1.15;margin:18px 0 12px;letter-spacing:-.8px}
.lead{font-size:19px;color:var(--muted);margin:0 0 22px}
.badge{display:inline-block;background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent);font-weight:700;font-size:13px;padding:5px 12px;border-radius:999px}
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-weight:700;padding:12px 20px;border-radius:12px}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.shots{display:flex;gap:14px;justify-content:center}
.shots img{width:46%;max-width:260px;border-radius:22px;box-shadow:0 18px 40px rgba(0,0,0,.22);border:1px solid rgba(0,0,0,.08)}
section{padding:36px 0}
h2{font-size:26px;margin:0 0 16px;letter-spacing:-.3px}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card h3{margin:0 0 6px;font-size:18px}
.card p{margin:0;color:var(--muted)}
ul.clean{list-style:none;padding:0;margin:0;display:grid;gap:10px}
ul.clean li{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px}
article.legal{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px 38px;margin:30px 0}
article.legal h1{font-size:30px;margin-top:0}
article.legal h2{font-size:21px;margin-top:28px}
article.legal h3{font-size:17px}
article.legal table{border-collapse:collapse;width:100%;font-size:14px}
article.legal th,article.legal td{border:1px solid var(--line);padding:8px 10px;text-align:left}
article.legal code{background:#f4f0e8;padding:1px 5px;border-radius:5px;font-size:.9em}
footer.site{border-top:1px solid var(--line);margin-top:40px;padding:28px 0 40px;color:var(--muted);font-size:14px}
footer.site a{color:var(--muted)}
.tabs{display:flex;gap:8px;margin:22px 0 0}
.tabs button{border:1px solid var(--line);background:#fff;padding:8px 16px;border-radius:999px;cursor:pointer;font-weight:600}
.tabs button.active{background:var(--accent);border-color:var(--accent);color:#fff}
[hidden]{display:none!important}
html[data-lang="zh"] [data-lang-block="en"],html[data-lang="en"] [data-lang-block="zh"]{display:none!important}
@media(max-width:760px){.hero .wrap{grid-template-columns:1fr;gap:24px}.shots{order:-1}h1{font-size:32px}.grid{grid-template-columns:1fr}article.legal{padding:24px 20px}}
body.app-tradeflow{--accent:#1F6F5C;--dark:#0B3D33}
body.app-rentkeeper{--accent:#2F4B7C;--dark:#14233D}
body.app-booknest{--accent:#6B4A8A;--dark:#2A1B3D}
.mini-icon{border-radius:14px}
.hero-stack .wrap{display:block}