:root{--bg:#fff8f1;--ink:#2b2233;--mute:#7a6d82;--brand:#f5821f;--brand2:#fdc87a;--card:#ffffff;--line:#f0e1d6;--sh:0 8px 30px rgba(120,60,80,.12)}
@media (prefers-color-scheme:dark){:root{--bg:#17121c;--ink:#f3eaf5;--mute:#a597ad;--card:#221b29;--line:#352b3d;--sh:0 8px 30px rgba(0,0,0,.4)}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 "PingFang SC","Microsoft YaHei",system-ui,sans-serif}
a{color:inherit;text-decoration:none}
header.nav{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:8px;padding:12px 5vw;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.logo{margin-right:auto;line-height:0}
.logo img{height:38px;width:auto;filter:drop-shadow(0 0 1px rgba(0,0,0,.25))}
.hero .mainlogo{width:min(560px,82vw);height:auto;filter:drop-shadow(0 6px 20px rgba(0,0,0,.35))}
header.nav{flex-wrap:wrap}
header.nav a.l{white-space:nowrap;padding:6px 12px;border-radius:99px;font-size:15px}
header.nav a.l:hover,header.nav a.l.on{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff}
@media(max-width:640px){header.nav{flex-wrap:wrap}.logo{width:100%}}
.hero{position:relative;min-height:88vh;display:grid;place-items:center;text-align:center;color:#fff;background:#3a2347 center/cover no-repeat;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(245,130,31,.45),rgba(40,25,60,.7))}
.hero>div{position:relative;padding:0 6vw}
.hero h1{font-size:clamp(36px,8vw,84px);margin:0;letter-spacing:.06em;text-shadow:0 4px 24px rgba(0,0,0,.35)}
.hero p{font-size:clamp(16px,2.4vw,22px);margin:12px 0 32px;opacity:.95}
.btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.btn{display:inline-block;padding:12px 28px;border-radius:99px;font-weight:700;background:#fff;color:#d9650a;box-shadow:var(--sh);transition:.2s}
.btn:hover{transform:translateY(-3px)}
.btn.ghost{background:transparent;color:#fff;border:2px solid #fff}
main{max-width:1100px;margin:0 auto;padding:48px 5vw}
h2{font-size:28px;margin:0 0 6px}
.sub{color:var(--mute);margin:0 0 28px}
.grid{display:grid;gap:22px;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--sh);transition:.2s;cursor:pointer}
.card:hover{transform:translateY(-4px)}
.card img{width:100%;aspect-ratio:3/4;object-fit:cover;display:block;background:var(--line)}
.card .t{padding:12px 16px 16px}
.card b{display:block}
.card small{color:var(--mute)}
.masonry{columns:4 220px;column-gap:16px}
.masonry figure{margin:0 0 16px;break-inside:avoid;border-radius:14px;overflow:hidden;background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);cursor:pointer;transition:.2s}
.masonry figure:hover{transform:translateY(-3px)}
.masonry.rows{columns:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;align-items:start}
.masonry.rows figure{margin:0}
.masonry img{width:100%;display:block}
.masonry figcaption{padding:8px 12px;font-size:14px;color:var(--mute)}
.stats{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.stats div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;text-align:center;box-shadow:var(--sh)}
.stats b{display:block;font-size:30px;background:linear-gradient(90deg,var(--brand),var(--brand2));-webkit-background-clip:text;color:transparent}
.stats span{font-size:13px;color:var(--mute)}
.logos{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}
.logos img{width:100%;height:110px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px}
.tiles{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-top:-70px;position:relative;z-index:2;padding:0 5vw;max-width:1100px;margin-inline:auto}
.tile{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--sh)}
.tile h3{margin:0 0 4px}.tile p{margin:0;color:var(--mute);font-size:14px}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.tabs button{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:6px 16px;border-radius:99px;cursor:pointer;font:inherit}
.tabs button.on{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;border-color:transparent}
.lb{position:fixed;inset:0;background:rgba(10,5,15,.88);display:none;place-items:center;z-index:50;padding:20px}
.lb.show{display:grid}
.lb .box{max-width:min(92vw,900px);max-height:92vh;color:#fff;text-align:center}
.lb img{max-width:100%;max-height:74vh;border-radius:12px}
.lb .nv{display:flex;justify-content:center;gap:12px;margin-top:10px}
.lb button{background:#fff2;color:#fff;border:0;padding:8px 18px;border-radius:99px;cursor:pointer;font:inherit}
form.gb{display:grid;gap:10px;background:var(--card);border:1px solid var(--line);padding:20px;border-radius:18px;box-shadow:var(--sh);margin-bottom:28px}
form.gb input,form.gb textarea{font:inherit;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink)}
form.gb button{justify-self:start;border:0;padding:10px 28px;border-radius:99px;color:#fff;font:inherit;font-weight:700;cursor:pointer;background:linear-gradient(90deg,var(--brand),var(--brand2))}
.msg{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px 18px;margin-bottom:14px}
.msg .h{display:flex;justify-content:space-between;color:var(--mute);font-size:13px}
.msg p{margin:6px 0 0;white-space:pre-wrap;word-break:break-word}
.letter{max-width:680px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:6px;padding:40px 36px;box-shadow:var(--sh);font-family:"STKaiti","KaiTi",serif;font-size:18px;line-height:2}
.tl{border-left:3px solid var(--brand);padding-left:22px;margin-left:8px}
.tl div{margin-bottom:22px;position:relative}
.tl div::before{content:"";position:absolute;left:-30px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--brand2)}
footer{text-align:center;color:var(--mute);font-size:13px;padding:30px 5vw 40px;border-top:1px solid var(--line)}
footer a:hover{text-decoration:underline}