/* sitekit / site.css — 通用站点样式（主题由 CSS 变量驱动） */
:root{
  --accent:#b4231f;          /* 主色 */
  --accent-2:#c8992f;        /* 辅色 */
  --accent-3:#7a1410;
  --ink:#161616;
  --ink-2:#4a4a4a;
  --ink-3:#7d7d7d;
  --paper:#fbf9f5;
  --paper-2:#f3efe7;
  --line:rgba(0,0,0,.10);
  --bg:#ffffff;
  --dark:#141210;
  --radius:18px;
  --maxw:1200px;
  --shadow:0 24px 60px -30px rgba(0,0,0,.45);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.75;font-size:16px;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding-left:1.3em}
.wrap{width:min(var(--maxw),calc(100% - 8vw));margin:0 auto}

/* ---------- 背景特效层 ---------- */
.bgfx{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.55}
#bgfx{width:100%;height:100%;display:block}

/* ---------- 顶部导航 ---------- */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(14px) saturate(1.2);border-bottom:1px solid var(--line)}
.hd-in{width:min(var(--maxw),calc(100% - 8vw));margin:0 auto;height:72px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:#fff;font-size:15px;background:linear-gradient(135deg,var(--accent),var(--accent-3));box-shadow:0 8px 20px -8px var(--accent)}
.brand-txt b{display:block;font-size:17px;letter-spacing:.06em}
.brand-txt i{display:block;font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.14em}
.nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.nav a{padding:8px 14px;border-radius:99px;font-size:14.5px;color:var(--ink-2);transition:.25s}
.nav a:hover{background:var(--paper-2);color:var(--accent)}
.nav a.on{background:var(--accent);color:#fff}
.burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;padding:11px 10px}
.burger i{display:block;height:2px;background:var(--ink);margin:4px 0;border-radius:2px;transition:.3s}
.progress{height:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2));width:0}

/* ---------- 首屏 ---------- */
.hero{position:relative;min-height:min(88vh,760px);display:flex;align-items:center;overflow:hidden;background:var(--dark)}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;transform:scale(1.06);filter:saturate(.9) contrast(1.05)}
.hero-veil{position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(10,8,8,.72),rgba(10,8,8,.45) 45%,rgba(10,8,8,.88)),
  radial-gradient(80% 60% at 20% 20%,rgba(180,35,31,.35),transparent 60%)}
#stars{position:absolute;inset:0;width:100%;height:100%}
.hero-in{position:relative;z-index:2;width:min(var(--maxw),calc(100% - 8vw));margin:0 auto;color:#fff;padding:80px 0 96px}
.eyebrow{font-size:12.5px;letter-spacing:.34em;text-transform:uppercase;color:var(--accent-2);margin-bottom:22px}
.hero h1{font-size:clamp(30px,4.6vw,62px);font-weight:800;letter-spacing:.02em;line-height:1.2;max-width:16em}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,#ffd97a,#ffe9b8 40%,#e8b64c);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:22px;max-width:40em;color:rgba(255,255,255,.78);font-size:16.5px;line-height:1.9}
.hero-actions{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:99px;border:1px solid rgba(255,255,255,.28);color:#fff;font-size:15px;transition:.3s;background:rgba(255,255,255,.06)}
.btn:hover{transform:translateY(-2px);background:rgba(255,255,255,.14)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-3));border-color:transparent;box-shadow:0 18px 40px -18px var(--accent)}
.btn.ghost{border-color:rgba(255,255,255,.18);color:rgba(255,255,255,.85)}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;color:rgba(255,255,255,.6);font-size:11px;letter-spacing:.3em;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-hint i{width:1px;height:38px;background:linear-gradient(180deg,rgba(255,255,255,.6),transparent);animation:hint 2s infinite}
@keyframes hint{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* ---------- 数据带 ---------- */
.stats-band{background:var(--dark);color:#fff;border-top:1px solid rgba(255,255,255,.08)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;padding:44px 0}
.stat{text-align:center;padding:10px}
.stat b{display:block;font-size:clamp(28px,3.4vw,44px);font-weight:800;background:linear-gradient(120deg,#fff,#d8c9a8);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;margin-top:8px;font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.12em}

/* ---------- 区块标题 ---------- */
.sec-head{margin:76px 0 34px;max-width:44em}
.sec-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;position:relative;padding-left:18px}
.sec-head h2:before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--accent),var(--accent-2))}
.sec-head p{margin-top:10px;color:var(--ink-3);font-size:14.5px;padding-left:18px}

/* ---------- 重点卡 ---------- */
.feat-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:18px}
.feat{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--paper-2);min-height:300px;display:flex;align-items:flex-end;transition:.4s}
.feat:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feat-img{position:absolute;inset:0}
.feat-img img{width:100%;height:100%;object-fit:cover;transition:.7s}
.feat:hover .feat-img img{transform:scale(1.06)}
.feat-img:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,8,8,.05),rgba(10,8,8,.82))}
.feat-body{position:relative;z-index:2;padding:26px;color:#fff}
.feat-body h3{font-size:19px;margin-top:10px;line-height:1.45}
.feat-body p{margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.72);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tag{display:inline-block;font-size:11.5px;letter-spacing:.14em;padding:4px 10px;border-radius:99px;background:rgba(255,255,255,.14);color:#fff;backdrop-filter:blur(6px)}

/* ---------- 栏目卡 ---------- */
.sec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.seccard{display:grid;grid-template-columns:112px 1fr;gap:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.35s}
.seccard:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(180,35,31,.35)}
.seccard-img img{width:100%;height:100%;object-fit:cover;min-height:100%}
.seccard-body{padding:18px 20px}
.seccard-body .tag{background:var(--paper-2);color:var(--accent)}
.seccard-body h3{font-size:17.5px;margin-top:10px}
.seccard-body p{font-size:13px;color:var(--ink-3);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.more{display:inline-block;margin-top:12px;font-size:12.5px;color:var(--accent);letter-spacing:.08em}

/* ---------- 引文带 ---------- */
.quote-band{margin:90px 0;background:linear-gradient(120deg,var(--accent-3),var(--accent) 60%,#8c1a15);color:#fff;padding:72px 0;position:relative;overflow:hidden}
.quote-band:after{content:"";position:absolute;inset:0;background:radial-gradient(60% 80% at 80% 20%,rgba(255,255,255,.16),transparent 60%)}
.quote{position:relative;z-index:2;font-family:var(--serif);font-size:clamp(20px,2.8vw,34px);line-height:1.7;max-width:22em}
.quote-src{position:relative;z-index:2;margin-top:18px;font-size:13px;letter-spacing:.2em;color:rgba(255,255,255,.7)}

/* ---------- 最新列表 ---------- */
.latest-list{border-top:1px solid var(--line)}
.lrow{display:grid;grid-template-columns:110px minmax(0,300px) 1fr 30px;gap:18px;align-items:center;padding:18px 6px;border-bottom:1px solid var(--line);transition:.25s}
.lrow:hover{background:var(--paper);padding-left:14px}
.ltag{font-size:11.5px;color:var(--accent);letter-spacing:.1em}
.ltitle{font-size:16px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lsum{font-size:13px;color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lgo{color:var(--accent);text-align:right}

/* ---------- CTA ---------- */
.cta{margin:90px auto 100px}
.cta-in{background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:56px 44px;text-align:center}
.cta-in h2{font-size:clamp(22px,2.6vw,30px)}
.cta-in p{margin-top:12px;color:var(--ink-3)}
.cta-mail{margin-top:18px;font-size:14.5px}
.cta-mail a{color:var(--accent);border-bottom:1px solid rgba(180,35,31,.35)}

/* ---------- 栏目页 hero ---------- */
.page-hero{position:relative;min-height:340px;display:flex;align-items:flex-end;overflow:hidden;background:var(--dark)}
.page-hero-img{position:absolute;inset:0}
.page-hero-img img{width:100%;height:100%;object-fit:cover;filter:saturate(.85)}
.page-hero-img:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,8,8,.55),rgba(10,8,8,.9))}
.page-hero-in{position:relative;z-index:2;width:min(var(--maxw),calc(100% - 8vw));margin:0 auto;padding:60px 0 44px;color:#fff}
.page-hero-in h1{font-size:clamp(28px,3.6vw,44px);font-weight:800}
.page-hero-in p{margin-top:14px;max-width:46em;color:rgba(255,255,255,.75);font-size:15px}
.page-hero-meta{display:flex;gap:22px;margin-top:18px;font-size:12.5px;color:rgba(255,255,255,.55);letter-spacing:.1em}

/* ---------- 卡片列表 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}
.sec-list{padding:56px 0 90px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.35s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(180,35,31,.3)}
.card-img{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:.7s}
.card:hover .card-img img{transform:scale(1.06)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-body .tag{background:var(--paper-2);color:var(--accent)}
.card-body h3{margin-top:12px;font-size:18px;line-height:1.45}
.card-body p{margin-top:9px;font-size:13.5px;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.card-meta{margin-top:14px;font-size:12px;color:var(--ink-3);letter-spacing:.08em}
.empty{color:var(--ink-3)}

/* ---------- 文章页 ---------- */
.a-hero{position:relative;min-height:420px;display:flex;align-items:flex-end;background:var(--dark);overflow:hidden}
.a-hero-img{position:absolute;inset:0}
.a-hero-img img{width:100%;height:100%;object-fit:cover}
.a-hero-img:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,8,8,.5),rgba(10,8,8,.92))}
.a-hero-in{position:relative;z-index:2;width:min(940px,calc(100% - 8vw));margin:0 auto;padding:56px 0 40px;color:#fff}
.crumb{font-size:12.5px;color:rgba(255,255,255,.6);display:flex;gap:10px;margin-bottom:16px}
.crumb a:hover{color:#fff}
.a-hero-in h1{font-size:clamp(24px,3.2vw,40px);font-weight:800;line-height:1.35}
.a-sum{margin-top:16px;color:rgba(255,255,255,.72);font-size:15px;max-width:44em}
.a-meta{display:flex;gap:18px;margin-top:18px;font-size:12px;color:rgba(255,255,255,.5);letter-spacing:.12em}
.a-wrap{width:min(1100px,calc(100% - 8vw));margin:56px auto;display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:56px;align-items:start}
.a-body{font-size:16.5px;line-height:2.0;color:var(--ink-2)}
.a-body p{margin:0 0 18px}
.a-body h2{font-size:22px;color:var(--ink);margin:44px 0 16px;padding-left:14px;border-left:4px solid var(--accent)}
.a-body h2:first-child{margin-top:0}
.a-body ul,.a-body ol{margin:0 0 20px;padding-left:1.4em}
.a-body li{margin:8px 0}
.a-body li::marker{color:var(--accent)}
.a-body blockquote{margin:26px 0;padding:20px 24px;background:var(--paper);border-left:4px solid var(--accent-2);border-radius:0 12px 12px 0;font-family:var(--serif);color:var(--ink);font-size:17px}
.a-body strong{color:var(--accent-3)}
.a-fig{margin:30px 0}
.a-fig img{width:100%;border-radius:14px}
.a-fig figcaption{margin-top:10px;font-size:12.5px;color:var(--ink-3);text-align:center}
.a-note{margin:26px 0;padding:18px 22px;background:linear-gradient(135deg,rgba(180,35,31,.06),rgba(200,153,47,.08));border:1px solid rgba(180,35,31,.16);border-radius:14px;font-size:15px}
.a-note b{display:block;color:var(--accent);margin-bottom:6px;font-size:13.5px;letter-spacing:.1em}
.a-table{margin:26px 0;overflow-x:auto}
.a-table table{width:100%;border-collapse:collapse;font-size:14.5px}
.a-table th,.a-table td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.a-table thead th{background:var(--paper-2);font-weight:600}
.a-side{position:sticky;top:96px}
.a-toc{border-left:2px solid var(--line);padding-left:16px;display:flex;flex-direction:column;gap:10px}
.a-toc b{font-size:12px;letter-spacing:.16em;color:var(--ink-3);margin-bottom:4px}
.a-toc a{font-size:13.5px;color:var(--ink-3);line-height:1.6}
.a-toc a:hover{color:var(--accent)}
.a-nav{display:flex;justify-content:space-between;gap:18px;padding:0 0 90px;width:min(1100px,calc(100% - 8vw))}
.a-prev,.a-next{display:block;max-width:46%;padding:18px 22px;border:1px solid var(--line);border-radius:14px;transition:.3s}
.a-prev:hover,.a-next:hover{border-color:var(--accent);transform:translateY(-2px)}
.a-prev span,.a-next span{display:block;font-size:11.5px;color:var(--ink-3);letter-spacing:.14em;margin-bottom:6px}
.a-next{text-align:right;margin-left:auto}
.a-prev b,.a-next b{font-size:14.5px;font-weight:600}

/* ---------- 关于 ---------- */
.about{padding:56px 0 90px;max-width:900px}

/* ---------- 页脚 ---------- */
.ft{background:var(--dark);color:rgba(255,255,255,.72);margin-top:0}
.ft-in{width:min(var(--maxw),calc(100% - 8vw));margin:0 auto;padding:60px 0 40px;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px}
.ft-brand b{color:#fff;font-size:17px;letter-spacing:.08em}
.ft-brand p{margin-top:10px;font-size:13px;color:rgba(255,255,255,.5);line-height:1.9}
.ft-col h4{font-size:12px;letter-spacing:.2em;color:rgba(255,255,255,.4);margin-bottom:14px;font-weight:600}
.ft-col a{display:block;font-size:13.5px;padding:5px 0;color:rgba(255,255,255,.7)}
.ft-col a:hover{color:#fff}
.ft-note{font-size:12.5px;color:rgba(255,255,255,.45);line-height:1.9}
.ft-bar{border-top:1px solid rgba(255,255,255,.1);padding:18px 0 26px;font-size:12px;color:rgba(255,255,255,.35);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.ft-bar{width:min(var(--maxw),calc(100% - 8vw));margin:0 auto;display:flex}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .feat-grid{grid-template-columns:1fr 1fr}
  .feat:first-child{grid-column:1/-1}
  .a-wrap{grid-template-columns:1fr}
  .a-side{display:none}
  .ft-in{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .nav{position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:14px 6vw 22px;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:.4s;z-index:40}
  .nav.open{transform:none}
  .nav a{padding:12px 14px;border-radius:10px}
  .burger{display:block}
  .brand-txt i{display:none}
  .hero{min-height:76vh}
  .stats{grid-template-columns:1fr 1fr}
  .lrow{grid-template-columns:1fr 30px;gap:6px}
  .ltag,.lsum{display:none}
  .card-grid{grid-template-columns:1fr}
  .sec-grid{grid-template-columns:1fr}
  .ft-in{grid-template-columns:1fr}
  .a-nav{flex-direction:column}
  .a-prev,.a-next{max-width:100%}
  .a-body{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}