:root{
  --blue:#1370f3; --blue-dark:#0b5bcb; --blue-light:#eaf2fe; --ink:#1c2733; --mut:#5b6b7c;
  --line:#dde6f2; --bg:#ffffff; --bg-soft:#f6f9fe; --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:10}
.nav{display:flex;align-items:center;gap:14px;height:62px}
.nav .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--ink)}
.nav .brand img{width:32px;height:32px;border-radius:8px}
.nav .links{margin-left:auto;display:flex;gap:22px;font-size:15px}
.nav .links a{color:var(--ink)}
.nav .links a.active{color:var(--blue);font-weight:600}
.nav .lang{margin-left:6px;border:1px solid var(--line);border-radius:999px;padding:3px 12px;font-size:13.5px;color:var(--mut)}
.hero{padding:84px 0 64px;text-align:center;background:linear-gradient(180deg,var(--blue-light),#fff)}
.hero img.logo{width:110px;height:110px;border-radius:26px;box-shadow:0 12px 32px rgba(19,112,243,.25)}
.hero h1{font-size:44px;line-height:1.2;margin:24px 0 6px;letter-spacing:.2px}
.hero .tagline{font-size:20px;color:var(--ink);font-weight:600}
.hero .sub{color:var(--mut);max-width:640px;margin:12px auto 0;font-size:16px}
.cta{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;background:var(--blue);color:#fff;padding:12px 28px;border-radius:999px;font-weight:600;font-size:16px;box-shadow:0 6px 18px rgba(19,112,243,.3)}
.btn:hover{background:var(--blue-dark);text-decoration:none}
.btn.ghost{background:#fff;color:var(--blue);border:1px solid var(--blue);box-shadow:none}
.btn.disabled{background:#e8eef6;color:var(--mut);box-shadow:none;cursor:default}
.ver{margin-top:16px;color:var(--mut);font-size:13.5px}
.stats{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin:44px auto 0;max-width:820px}
.stat{flex:1 1 150px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 10px}
.stat b{display:block;font-size:24px;color:var(--blue)}
.stat span{font-size:13.5px;color:var(--mut)}
section{padding:60px 0}
section.soft{background:var(--bg-soft)}
h2{font-size:29px;text-align:center;margin-bottom:8px}
.lede{text-align:center;color:var(--mut);max-width:640px;margin:0 auto 36px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card h3{font-size:17.5px;margin-bottom:8px}
.card h3 .ic{margin-right:8px}
.card p{color:var(--mut);font-size:15px}
.shots{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.shot{border:1px solid #dbe7fa;border-radius:var(--radius);background:#fff;overflow:hidden;margin:0}
.shot img{width:100%;height:auto;display:block}
.shot figcaption{padding:10px 14px;color:var(--mut);font-size:13.5px;text-align:center}
.gal-group{margin-bottom:34px}
.gal-group>h3{font-size:19px;margin-bottom:14px;text-align:left}
.gal{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.gal figure{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.gal figure.wide{grid-column:1/-1}
.gal img{width:100%;display:block}
.gal figure.narrow{max-width:340px;justify-self:center;width:100%}
.gal figcaption{padding:10px 14px;font-size:14px;color:var(--mut);border-top:1px solid var(--line)}
@media (max-width:640px){.gal{grid-template-columns:1fr}}
.dl-group{margin-bottom:36px}
.dl-group h3{font-size:20px;margin-bottom:4px}
.dl-group .hint{color:var(--mut);font-size:14.5px;margin-bottom:14px}
.dl-item{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:15px 18px;margin-bottom:10px;flex-wrap:wrap}
.dl-item .fname{font-weight:600;font-size:15px;word-break:break-all}
.dl-item .fmeta{color:var(--mut);font-size:13.5px}
.dl-item .btn{margin-left:auto;padding:8px 22px;font-size:14.5px}
.note{border:1px solid #f3d27a;background:#fffaf0;border-radius:var(--radius);padding:18px 20px;margin:22px 0}
.note h4{margin-bottom:6px;font-size:16px}
.note p{font-size:14.5px;color:#5c4d1f}
code{background:#eef3fb;border-radius:6px;padding:2px 7px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px}
pre{background:#16222e;color:#d7e6f5;border-radius:10px;padding:14px 16px;overflow-x:auto;margin-top:10px}
pre code{background:none;color:inherit;padding:0}
.rel{border-left:3px solid var(--blue);padding:4px 0 4px 22px;margin-bottom:38px}
.rel h3{font-size:21px;margin-bottom:2px}
.rel .date{color:var(--mut);font-size:14px;margin-bottom:10px}
.rel h4{font-size:16px;margin:14px 0 6px}
.rel ul{margin-left:20px;color:#33424f;font-size:15px}
.rel li{margin-bottom:5px}
footer{border-top:1px solid var(--line);padding:30px 0 38px;color:var(--mut);font-size:14px;background:var(--bg-soft)}
footer .wrap{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
footer .right{margin-left:auto;display:flex;gap:18px}
.page-head{padding:52px 0 8px;text-align:center}
.page-head h1{font-size:34px;margin-bottom:8px}
.page-head p{color:var(--mut)}
@media (max-width:640px){.hero h1{font-size:33px}.nav .links{gap:14px;font-size:14px}}