:root{
  --bg:#ffffff;
  --panel:#f7f9fc;
  --panel-2:#fbfdff;
  --primary:#1a5cf0;
  --cyan:#0090c8;
  --green:#00a878;
  --line:#eaf0fa;
  --ink:#12203c;
  --muted:#5b6b88;
  --faint:#8b9ab4;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{width:min(1160px,92vw);margin:0 auto}
.mono{font-family:var(--mono)}
.tag{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--primary)}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(0,144,200,.12),0 0 12px rgba(0,144,200,.55)}
.grid-bg{background-image:linear-gradient(to right,rgba(26,92,240,.045) 1px,transparent 1px),linear-gradient(to bottom,rgba(26,92,240,.045) 1px,transparent 1px);background-size:64px 64px}
section{scroll-margin-top:80px}
[hidden]{display:none !important}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{height:72px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--cyan));display:grid;place-items:center;box-shadow:0 6px 16px rgba(26,92,240,.22)}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.06em;line-height:1.2}
.brand-sub{display:block;font-family:var(--mono);font-size:9px;letter-spacing:.22em;color:var(--faint);font-weight:400}
.header-search{flex:1;max-width:420px;margin-left:auto;display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:0 12px;height:38px;transition:border-color .2s,box-shadow .2s}
.header-search:focus-within{border-color:#b9d2ff;box-shadow:0 0 0 3px rgba(26,92,240,.08)}
.header-search svg{width:15px;height:15px;color:var(--faint);flex-shrink:0}
.header-search input{border:0;outline:0;background:transparent;font-size:13px;color:var(--ink);width:100%;font-family:var(--sans)}
.header-search input::placeholder{color:var(--faint)}
.header-search kbd{font-family:var(--mono);font-size:10px;color:var(--faint);border:1px solid #dde7f6;border-radius:4px;padding:1px 5px;white-space:nowrap}
.nav{display:flex;align-items:center;gap:22px}
.nav a{font-size:13.5px;color:var(--muted);transition:color .2s;white-space:nowrap}
.nav a:hover{color:var(--primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:9px;font-size:13.5px;font-weight:600;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer;white-space:nowrap}
.btn-primary{background:linear-gradient(100deg,var(--primary),#2470f5);color:#fff;box-shadow:0 8px 20px rgba(26,92,240,.20)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(26,92,240,.30)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#d7e4ff}
.btn-ghost:hover{transform:translateY(-2px);background:var(--panel)}
.btn-sm{padding:8px 15px;font-size:12.5px}
.btn svg{width:15px;height:15px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(560px 320px at 50% 0%,rgba(0,144,200,.10),transparent 72%),radial-gradient(420px 260px at 8% 90%,rgba(0,168,120,.06),transparent 70%);pointer-events:none}
.hero-inner{position:relative;z-index:1;text-align:center;padding:70px 0 66px}
.hero h1{font-size:clamp(32px,4.2vw,50px);line-height:1.3;font-weight:800;letter-spacing:-.01em;margin:18px 0 16px}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--primary),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:15.5px;color:var(--muted);max-width:660px;margin:0 auto}
.search-box{max-width:660px;margin:34px auto 0;background:#fff;border:1px solid #dbe7fa;border-radius:13px;box-shadow:0 18px 44px rgba(26,60,130,.10);display:flex;align-items:center;gap:12px;padding:8px 8px 8px 18px;text-align:left}
.search-box > svg{width:19px;height:19px;color:var(--primary);flex-shrink:0}
.search-box input{flex:1;border:0;outline:0;background:transparent;font-size:15px;color:var(--ink);min-width:0;font-family:var(--sans)}
.search-box input::placeholder{color:var(--faint)}
.search-box button{border:0;background:linear-gradient(100deg,var(--primary),#2470f5);color:#fff;font-size:13.5px;font-weight:600;border-radius:9px;padding:10px 22px;cursor:pointer;font-family:var(--sans);white-space:nowrap;transition:opacity .2s}
.search-box button:hover{opacity:.9}
.hot{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:18px;font-size:12.5px}
.hot > span{color:var(--faint);font-family:var(--mono);font-size:11px;letter-spacing:.1em}
.hot button{border:1px solid var(--line);background:#fff;color:var(--muted);font-size:12.5px;padding:4px 12px;border-radius:20px;cursor:pointer;font-family:var(--sans);transition:all .2s}
.hot button:hover{border-color:#bcd4ff;color:var(--primary);background:var(--panel-2)}
.hero-stats{display:flex;justify-content:center;gap:0;margin-top:40px}
.hero-stat{min-width:150px;padding:0 30px}
.hero-stat+.hero-stat{border-left:1px solid var(--line)}
.hero-stat b{display:block;font-family:var(--mono);font-size:24px;font-weight:600;color:var(--primary);line-height:1.3}
.hero-stat span{font-size:12px;color:var(--faint)}

/* ---------- category chips ---------- */
.chips-sec{padding:30px 0;border-bottom:1px solid var(--line);background:var(--panel-2)}
.chips-inner{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.chips-label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--faint);margin-right:6px;white-space:nowrap}
.chip{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:8px;border:1px solid var(--line);background:#fff;font-size:13px;color:var(--muted);transition:all .22s;white-space:nowrap}
.chip i{font-family:var(--mono);font-size:10px;color:var(--cyan);font-style:normal}
.chip:hover{border-color:#bcd4ff;color:var(--primary);transform:translateY(-2px)}
.chip.active{background:linear-gradient(100deg,var(--primary),#2470f5);border-color:transparent;color:#fff;box-shadow:0 6px 16px rgba(26,92,240,.20)}
.chip.active i{color:#cfe2ff}
.chips-count{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--faint);white-space:nowrap}
.chips-count b{color:var(--primary);font-weight:600}

/* ---------- section common ---------- */
.sec{padding:70px 0;border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(24px,2.8vw,32px);font-weight:800;line-height:1.35;letter-spacing:-.01em;margin-top:10px}
.sec-head p{color:var(--muted);font-size:14px;margin-top:6px;max-width:620px}
.sec-index{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--faint)}
.sec-note{font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.06em}

/* quick grid */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.quick-item{position:relative;display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:11px;padding:15px 14px;overflow:hidden;transition:transform .26s,box-shadow .26s,border-color .26s;min-width:0}
.quick-item::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--cyan),var(--green));opacity:0;transition:opacity .26s}
.quick-item:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(26,92,240,.11);border-color:#dbe8ff}
.quick-item:hover::before{opacity:1}
.badge{width:36px;height:36px;flex-shrink:0;border-radius:9px;display:grid;place-items:center;font-size:15px;font-weight:700;font-family:var(--mono)}
.tone-1{background:linear-gradient(135deg,#eaf1ff,#dbe8ff);color:var(--primary)}
.tone-2{background:linear-gradient(135deg,#e6f6fd,#d5eff9);color:var(--cyan)}
.tone-3{background:linear-gradient(135deg,#e6f8f2,#d5f2e8);color:var(--green)}
.quick-meta{min-width:0}
.quick-meta b{display:block;font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.quick-meta span{display:block;font-family:var(--mono);font-size:10px;color:var(--faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* link groups */
.groups{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.link-group{background:var(--panel-2);border:1px solid var(--line);border-radius:13px;padding:22px 22px 12px;scroll-margin-top:90px}
.group-title{display:flex;align-items:center;gap:11px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:6px}
.group-title .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(0,144,200,.12),0 0 12px rgba(0,144,200,.55);flex-shrink:0}
.group-title h3{font-size:16px;font-weight:700}
.group-title span{font-family:var(--mono);font-size:11px;color:var(--faint);margin-left:auto;letter-spacing:.1em}
.site-item{display:flex;align-items:center;gap:12px;padding:11px 8px;border-bottom:1px dashed #e5edf9;border-radius:7px;transition:background .2s,transform .2s}
.site-item:last-child{border-bottom:0}
.site-item:hover{background:#fff;transform:translateX(4px)}
.site-idx{font-family:var(--mono);font-size:10.5px;color:var(--faint);flex-shrink:0;width:20px}
.site-item .badge{width:32px;height:32px;font-size:13px;border-radius:8px}
.site-meta{min-width:0;flex:1}
.site-meta b{display:block;font-size:13.5px;font-weight:600}
.site-meta em{display:block;font-style:normal;font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.site-url{font-family:var(--mono);font-size:10px;color:var(--faint);white-space:nowrap;max-width:170px;overflow:hidden;text-overflow:ellipsis}
.site-arrow{width:14px;height:14px;color:#b8c9e4;flex-shrink:0;transition:color .2s,transform .2s}
.site-item:hover .site-arrow{color:var(--primary);transform:translateX(2px)}
.empty{display:none;text-align:center;padding:48px 20px;color:var(--muted);font-size:14px;border:1px dashed #dce7f7;border-radius:12px;background:var(--panel-2)}
.empty b{display:block;font-family:var(--mono);font-size:20px;color:var(--primary);margin-bottom:8px}

/* spotlight slider */
.spotlight{padding:70px 0;border-bottom:1px solid var(--line);background:var(--panel-2)}
.slider{position:relative;border:1px solid #dfe9fa;border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 20px 50px rgba(26,60,130,.08)}
.slides{position:relative;height:clamp(320px,38vw,460px);background:#f4f8fe}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .6s ease,visibility .6s ease}
.slide.active{opacity:1;visibility:visible}
.slide-blur{position:absolute;inset:-15%;width:130%;height:130%;object-fit:cover;filter:blur(30px) saturate(1.15);opacity:.32}
.slide-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;z-index:1;filter:drop-shadow(0 12px 26px rgba(20,45,95,.16))}
.slide-tag{position:absolute;z-index:2;left:22px;top:20px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--muted);background:rgba(255,255,255,.85);border:1px solid rgba(220,232,250,.95);border-radius:6px;padding:5px 10px}
.slider-arrow{position:absolute;z-index:5;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;border:1px solid #dce8fa;background:rgba(255,255,255,.92);color:var(--primary);display:grid;place-items:center;cursor:pointer;box-shadow:0 6px 18px rgba(26,60,130,.12);transition:background .2s,transform .2s}
.slider-arrow:hover{background:#fff;transform:translateY(-50%) scale(1.06)}
.slider-arrow svg{width:17px;height:17px}
.slider-arrow.prev{left:16px}
.slider-arrow.next{right:16px}
.dots{position:absolute;z-index:5;bottom:14px;right:18px;display:flex;gap:8px;align-items:center;background:rgba(255,255,255,.88);border:1px solid rgba(220,232,250,.95);border-radius:20px;padding:8px 11px;box-shadow:0 4px 14px rgba(26,60,130,.07)}
.dots button{width:8px;height:8px;border-radius:50%;border:0;background:#c9d8ef;cursor:pointer;padding:0;transition:all .25s}
.dots button.active{width:24px;border-radius:5px;background:var(--primary)}
.slider-count{position:absolute;z-index:5;left:18px;bottom:14px;font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.1em;background:rgba(255,255,255,.88);border:1px solid rgba(220,232,250,.95);border-radius:20px;padding:6px 11px;box-shadow:0 4px 14px rgba(26,60,130,.07)}
.slider-count b{color:var(--primary)}
@media (max-width:640px){
  .slides{height:300px}
  .slide-tag{left:14px;top:14px;font-size:10px}
  .slider-arrow{width:32px;height:32px}
  .slider-arrow.prev{left:10px}
  .slider-arrow.next{right:10px}
  .dots{right:14px;bottom:14px}
  .slider-count{left:14px;bottom:14px}
}

/* service cta */
.cta{position:relative;overflow:hidden;padding:66px 0;border-bottom:1px solid var(--line)}
.cta::after{content:"";position:absolute;inset:0;background:radial-gradient(620px 280px at 84% 20%,rgba(0,144,200,.08),transparent 70%);pointer-events:none}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta h2{font-size:clamp(24px,2.8vw,32px);font-weight:800;line-height:1.35;margin:12px 0 10px}
.cta p{color:var(--muted);font-size:14px;max-width:600px}
.cta-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}
.cta-tags span{font-family:var(--mono);font-size:11px;color:var(--cyan);background:#eef8fd;border:1px solid #d9eef8;border-radius:5px;padding:4px 9px}
.cta .btn{padding:13px 24px;font-size:14px}

/* friend links */
.friends{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;padding:4px 0 22px;border-bottom:1px solid var(--line);margin-bottom:30px}
.fl-label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--faint);white-space:nowrap}
.fl-list{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center}
.fl-list a{font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:7px;transition:color .2s}
.fl-list a::before{content:"";width:4px;height:4px;border-radius:50%;background:#b9cdea;transition:background .2s,box-shadow .2s}
.fl-list a:hover{color:var(--primary)}
.fl-list a:hover::before{background:var(--cyan);box-shadow:0 0 8px rgba(0,144,200,.6)}

/* footer */
.site-footer{padding:42px 0 28px}
.footer-top{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-bottom:28px}
.footer-brand p{font-size:13px;color:var(--muted);max-width:380px;margin-top:12px}
.footer-links{display:flex;gap:52px;flex-wrap:wrap}
.footer-col h4{font-size:13px;font-weight:700;margin-bottom:11px}
.footer-col a{display:block;font-size:13px;color:var(--muted);padding:3px 0;transition:color .2s}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:20px;font-size:12px;color:var(--faint)}
.footer-bottom .mono{letter-spacing:.08em}
.foot-note{margin-top:14px;font-size:11.5px;color:var(--faint)}

/* responsive */
@media (max-width:1080px){
  .nav{display:none}
  .quick-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:860px){
  .header-search{display:none}
  .groups{grid-template-columns:1fr}
  .hero-inner{padding:56px 0 54px}
  .site-url{display:none}
}
@media (max-width:640px){
  .header-inner{height:64px;gap:12px}
  .brand-name{font-size:16px}
  .btn-sm{padding:8px 12px;font-size:12px}
  .sec{padding:52px 0}
  .cta{padding:52px 0}
  .quick-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .quick-item{padding:12px 10px;gap:9px}
  .quick-item .badge{width:30px;height:30px;font-size:12px}
  .hero h1{font-size:30px}
  .hero-stats{gap:0}
  .hero-stat{min-width:0;flex:1;padding:0 10px}
  .hero-stat b{font-size:20px}
  .search-box{margin-top:26px;padding-left:13px}
  .search-box input{font-size:13px}
  .search-box button{padding:9px 14px;font-size:12.5px}
  .chips-inner{gap:8px}
  .chips-count{display:none}
  .link-group{padding:18px 14px 10px}
  .footer-bottom{flex-direction:column}
}