*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#1f2a37;line-height:1.6;background:#fff}
html[lang=en] [data-lang=zh],html[lang=zh-CN] [data-lang=en]{display:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}a{color:#0b5cad}
.site-header{background:#0b2545;color:#fff;position:sticky;top:0;z-index:9}.hdr{display:flex;align-items:center;gap:16px;min-height:60px;flex-wrap:wrap}
.logo{color:#fff;font-weight:700;text-decoration:none;margin-right:auto}nav{display:flex;gap:14px;flex-wrap:wrap}nav a{color:#cfe0f5;text-decoration:none;font-size:.95rem}nav a.active,nav a:hover{color:#fff;border-bottom:2px solid #4fb3bf}
.lang-btn,.menu-btn{background:#4fb3bf;color:#06222b;border:0;border-radius:6px;padding:6px 12px;cursor:pointer;font-weight:600}.menu-btn{display:none}
.hero{background:linear-gradient(135deg,#0b2545,#13406e);color:#fff;padding:64px 0}.hero h1{font-size:2.1rem;margin:0 0 12px}.lead{font-size:1.15rem;color:#dbe8f6;max-width:760px}
.btn{display:inline-block;background:#4fb3bf;color:#06222b;padding:10px 20px;border-radius:8px;text-decoration:none;font-weight:700;border:0;cursor:pointer;font-size:1rem}.btn.ghost{background:transparent;color:#fff;border:2px solid #4fb3bf}
.sec{padding:48px 0}.sec.alt{background:#f3f7fb}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.card{background:#fff;border:1px solid #e1e8f0;border-radius:10px;padding:20px;box-shadow:0 1px 3px rgba(0,0,0,.04)}.card h3{margin-top:0;color:#0b2545}
.note{background:#fff8e6;border-left:4px solid #e0a800;padding:12px 16px;border-radius:4px}.emph{font-size:1.3rem;font-weight:700;color:#b00020}
.cred{border-collapse:collapse;width:100%;max-width:640px}.cred th,.cred td{border:1px solid #dde4ec;padding:10px;text-align:left}.cred th{background:#f3f7fb;width:45%}
.form{max-width:560px;display:grid;gap:14px}.form label{display:grid;gap:4px;font-weight:600}.form input,.form textarea{padding:10px;border:1px solid #c5d0dc;border-radius:6px;font:inherit}.form .chk{display:block;font-weight:400}
.site-footer{background:#0b2545;color:#cfe0f5;padding:28px 0;font-size:.9rem}.site-footer a{color:#fff}.license{font-weight:600;color:#fff}.small{opacity:.7}
@media(max-width:760px){.menu-btn{display:block}nav{display:none;width:100%;flex-direction:column;padding-bottom:12px}nav.open{display:flex}.hero h1{font-size:1.6rem}}
.qr-box{text-align:center;max-width:320px}.qr{width:260px;max-width:100%;border:1px solid #dde4ec;border-radius:8px}.qr-sm{width:90px;border-radius:4px;background:#fff}