:root{--cream:#f3efe6;--paper:#faf8f2;--sage:#a9b5a0;--sage-d:#6f7d66;--rock:#8a8c86;--ink:#3a3f37;--muted:#7c8176;--line:#e2ded3}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;background:var(--cream);color:var(--ink);line-height:1.75}
a{color:inherit}
.nav{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;padding:14px 6vw;background:rgba(243,239,230,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav.over{position:fixed;left:0;right:0;background:linear-gradient(rgba(30,34,28,.45),rgba(30,34,28,0));border:0;color:#fff}
.nav .logo{letter-spacing:.3em;font-weight:600;text-decoration:none}
.nav .links a{text-decoration:none;margin-left:26px;font-size:15px;opacity:.85;padding-bottom:3px}
.nav .links a.on,.nav .links a:hover{opacity:1;border-bottom:2px solid var(--sage)}
main{max-width:1100px;margin:auto;padding:56px 6vw 40px}
.ph1{font-weight:500;letter-spacing:.25em;font-size:30px;margin:0 0 6px;color:var(--sage-d)}.lead{color:var(--muted);margin:0 0 40px}
.card{background:var(--paper);border-radius:18px;overflow:hidden;box-shadow:0 6px 24px rgba(60,66,55,.08);text-decoration:none;display:block;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(60,66,55,.14)}
.btn{display:inline-block;padding:10px 22px;border-radius:24px;background:var(--sage-d);color:#fff;text-decoration:none;font-size:15px}
.btn.ghost{background:transparent;color:var(--sage-d);border:1px solid var(--sage-d)}
footer{border-top:1px solid var(--line);text-align:center;color:var(--muted);font-size:12px;padding:30px 6vw;line-height:1.9}
@media(max-width:640px){.nav{padding:12px 5vw}.nav .links a{margin-left:12px;font-size:13px}.nav .logo{letter-spacing:.15em;font-size:14px}main{padding:36px 5vw}.ph1{font-size:24px}}