/* ==================================================================
   lae.bj.cn · 低空经济知识门户  V3 轻科技 · 智库级门户
   ------------------------------------------------------------------
   配色与 evtol.bj.cn 同源（皇家蓝 #002890 / 天青 #3fb3d9 / 云白蓝底）
   设计语言：Apple 式留白与排版 · Xiaomi 式白卡微影与数据卡
             Huawei 式深空科技带与网格辉光 · 瑞士式信息密度与秩序
   ================================================================== */
:root{
  --bg:#f3f7ff;
  --bg2:#ffffff;
  --panel:#ffffff;
  --line:rgba(0,40,144,.10);
  --line2:rgba(0,40,144,.06);
  --grad:linear-gradient(135deg,#002890 0%,#1168bf 55%,#3fb3d9 100%);
  --grad-soft:linear-gradient(135deg,rgba(0,40,144,.07),rgba(63,179,217,.13));
  --gold:#c9982a;
  --cyan:#1168bf;
  --sky:#3fb3d9;
  --violet:#6d4ac7;
  --deep:#001235;
  --deep2:#000c24;
  --txt:#0a1a40;
  --muted:#52608a;
  --faint:#6b76a0;
  --radius:16px;
  --radius-lg:22px;
  --shadow-sm:0 2px 8px rgba(0,40,144,.06);
  --shadow:0 8px 32px rgba(0,40,144,.09);
  --shadow-lg:0 24px 64px rgba(0,40,144,.16);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro SC","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Mono",Menlo,Consolas,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px;scroll-padding-top:88px}
body{background:linear-gradient(180deg,#f3f7ff 0%,#eaf1fd 45%,#e3ecff 100%);color:var(--txt);
  font-family:var(--font);line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
::selection{background:rgba(63,179,217,.28)}
:focus-visible{outline:2px solid #1168bf;outline-offset:3px;border-radius:6px}

/* ---------- 背景氛围 ---------- */
.glow{position:fixed;inset:0;pointer-events:none;z-index:0}
.glow::before{content:"";position:absolute;top:-260px;left:50%;transform:translateX(-50%);width:1000px;height:640px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(63,179,217,.16),transparent 70%)}
.glow::after{content:"";position:absolute;top:220px;left:-240px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(0,40,144,.08),transparent 70%)}
.grid-bg{position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(0,40,144,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(0,40,144,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 85% 55% at 50% 0%,#000 40%,transparent 100%);
          mask-image:radial-gradient(ellipse 85% 55% at 50% 0%,#000 40%,transparent 100%)}
main{position:relative;z-index:1}

/* ---------- 阅读进度条 ---------- */
.scroll-progress{position:fixed;top:0;left:0;height:2.5px;width:0;z-index:200;
  background:linear-gradient(90deg,#3fb3d9,#1168bf,#002890);transition:width .1s linear}

/* ---------- Header（白玻璃） ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(243,247,255,.78);backdrop-filter:blur(20px) saturate(1.6);-webkit-backdrop-filter:blur(20px) saturate(1.6);
  border-bottom:1px solid rgba(0,40,144,.08);transition:box-shadow .3s,background .3s}
.site-header.scrolled{background:rgba(243,247,255,.92);box-shadow:0 6px 24px rgba(0,40,144,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--txt);flex:none}
.brand .logo{width:34px;height:34px;border-radius:9px;background:var(--grad);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#fff;letter-spacing:.5px}
.logo-img{width:38px;height:38px;border-radius:10px;flex:none;display:block;box-shadow:0 4px 14px rgba(0,40,144,.22)}
.brand small{display:block;font-size:10px;font-weight:500;color:var(--faint);letter-spacing:1.2px;line-height:1.2}
.nav{display:flex;align-items:center;gap:1px}
.nav a{padding:8px 11px;border-radius:9px;font-size:14px;color:var(--muted);font-weight:500;transition:.2s;white-space:nowrap}
.nav a:hover,.nav a.active{color:var(--cyan);background:rgba(0,40,144,.06)}
.nav .cta{margin-left:8px;padding:8px 18px;background:var(--grad);color:#fff;border-radius:9px;font-weight:600;
  box-shadow:0 4px 14px rgba(0,40,144,.25)}
.nav .cta:hover{opacity:.92;color:#fff;background:var(--grad);transform:translateY(-1px)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:9px;color:var(--txt);font-size:18px;padding:4px 10px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{padding:146px 0 66px;text-align:center;position:relative}
.hero .kicker{display:inline-flex;align-items:center;gap:8px;padding:6px 18px;border:1px solid rgba(0,40,144,.22);
  border-radius:999px;font-size:13px;color:var(--cyan);letter-spacing:2px;font-weight:600;
  background:rgba(255,255,255,.65);box-shadow:var(--shadow-sm)}
.hero h1{font-size:clamp(32px,5vw,58px);font-weight:800;margin:26px 0 8px;line-height:1.18;letter-spacing:-1px}
.hero .en{font-size:clamp(13px,1.5vw,17px);letter-spacing:6px;color:var(--faint);text-transform:uppercase;margin-bottom:22px;font-weight:500}
.grad,.text-grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{max-width:850px;margin:0 auto;color:var(--muted);font-size:17px}
.hero .actions{margin-top:36px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 30px;border-radius:12px;font-size:15px;font-weight:600;transition:.25s;cursor:pointer}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(0,40,144,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(0,40,144,.36)}
.btn-ghost{border:1.5px solid rgba(0,40,144,.22);color:var(--txt);background:rgba(255,255,255,.55)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn-sm{padding:8px 20px;font-size:13.5px;border-radius:10px}

/* ---------- 快讯滚动条 · 深色通栏（对齐 aam.bj.cn LIVE 风格） ---------- */
.ticker{display:flex;align-items:stretch;gap:18px;width:100%;max-width:none;margin:46px 0 0;
  padding:0 max(16px,calc((100% - 1400px)/2));
  background:linear-gradient(90deg,#001235,#012a78 52%,#001a4d);
  box-shadow:0 14px 40px rgba(0,18,53,.35);overflow:hidden;position:relative}
.ticker::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 90px at 18% 0%,rgba(63,179,217,.16),transparent 70%)}
.ticker .tag{flex:none;align-self:center;display:flex;align-items:center;gap:9px;
  font-size:13px;font-weight:800;color:#fff;letter-spacing:1px;white-space:nowrap}
.ticker .tag em{font-style:normal}
.ticker .tag small{font-size:9.5px;letter-spacing:2.6px;color:rgba(255,255,255,.42);font-weight:600;text-transform:uppercase}
.ticker .tag::after{content:"";width:1px;height:16px;background:rgba(255,255,255,.22)}
.live-dot{width:8px;height:8px;border-radius:50%;background:#ff4d5e;flex:none;
  box-shadow:0 0 0 0 rgba(255,77,94,.55);animation:livepulse 1.6s infinite}
@keyframes livepulse{0%{box-shadow:0 0 0 0 rgba(255,77,94,.55)}70%{box-shadow:0 0 0 9px rgba(255,77,94,0)}100%{box-shadow:0 0 0 0 rgba(255,77,94,0)}}
.ticker .track{overflow:hidden;flex:1;position:relative;height:44px;display:flex;align-items:center;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 3%,#000 97%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 3%,#000 97%,transparent)}
.ticker .roll{position:absolute;white-space:nowrap;font-size:13.5px;color:rgba(255,255,255,.82);font-weight:500;
  animation:roll 60s linear infinite;will-change:transform}
.ticker .roll b{color:#7dd1ef;font-family:var(--mono);font-weight:700;margin:0 7px 0 4px}
.ticker .roll span{margin:0 32px 0 0}
@keyframes roll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.ticker:hover .roll{animation-play-state:paused}
.ticker-more{flex:none;align-self:center;font-size:12px;font-weight:700;color:#fff;white-space:nowrap;
  padding:6px 14px;border:1px solid rgba(255,255,255,.28);border-radius:999px;background:rgba(255,255,255,.08);
  transition:.22s;position:relative;z-index:1}
.ticker-more:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.5)}
/* 深色底分类彩签（可读性适配） */
.ticker .tk{display:inline-block;font-style:normal;font-size:10.5px;font-weight:700;padding:1.5px 8px;
  border-radius:6px;margin-right:8px;vertical-align:1px;letter-spacing:.5px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.10)}
.ticker .tk-pol{color:#9db9ff}.ticker .tk-law{color:#c9aefc}.ticker .tk-ind{color:#8fe0b2}
.ticker .tk-intl{color:#8fd0ff}.ticker .tk-data{color:#f2d489}.ticker .tk-tal{color:#f0a6ee}
.ticker .tk-event{color:#ffb590}.ticker .tk-fwd{color:#8fe6ef}

/* ---------- 快讯矩阵 · 四栏分类速览 ---------- */
.brief-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.brief-col{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:var(--radius-lg);padding:20px 20px 12px;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:.28s}
.brief-col:hover{box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.35);transform:translateY(-4px)}
.brief-head{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:800;color:var(--txt);
  padding-bottom:12px;border-bottom:1px solid rgba(0,40,144,.09);margin-bottom:4px;letter-spacing:.3px;white-space:nowrap}
.brief-head .dot{margin-top:-1px}
.brief-head em{flex:none}
.brief-head em{font-style:normal;margin-left:auto;font-size:9px;letter-spacing:1px;text-transform:uppercase;
  color:var(--faint);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brief-head .dot{width:9px;height:9px;border-radius:50%;flex:none}
.d-pol{background:#002890;box-shadow:0 0 0 3px rgba(0,40,144,.14)}
.d-ind{background:#0d8a4f;box-shadow:0 0 0 3px rgba(13,138,79,.14)}
.d-intl{background:#006eb6;box-shadow:0 0 0 3px rgba(0,110,182,.14)}
.d-tal{background:#c052d3;box-shadow:0 0 0 3px rgba(192,82,211,.14)}
/* 快讯条目 · 新闻规范排版：日期徽标等宽成列 / 标题一行 / 摘要两行 / 信源沉底对齐 */
.brief-item{display:flex;flex-direction:column;padding:13px 2px;border-bottom:1px dashed rgba(0,40,144,.10);transition:.2s}
.brief-col>.brief-item:last-child{border-bottom:none}
.brief-item:hover{background:rgba(0,40,144,.035);border-radius:8px}
.brief-item .bi-top{display:flex;align-items:center;gap:9px;margin-bottom:6px}
.brief-item .bi-top b{flex:none;min-width:48px;text-align:center;font-family:var(--mono);font-size:11px;
  font-weight:700;color:var(--cyan);background:rgba(0,40,144,.07);border:1px solid rgba(0,40,144,.13);
  padding:2px 6px;border-radius:6px;font-variant-numeric:tabular-nums}
.brief-item .bi-top h4{font-size:14px;font-weight:800;color:var(--txt);letter-spacing:.2px;line-height:1.4;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brief-item:hover .bi-top h4{color:var(--cyan)}
.brief-item p{flex:1;font-size:12.8px;color:var(--muted);line-height:1.68;display:-webkit-box;
  -webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.brief-item .src{margin-top:8px;font-size:11px;color:var(--faint);letter-spacing:.2px;
  padding-left:9px;border-left:2px solid rgba(63,179,217,.45);line-height:1.4}

/* ---------- 前瞻日历 ---------- */
.watch{margin-top:34px;background:var(--grad-soft);border:1px solid rgba(0,40,144,.10);border-radius:var(--radius-lg);
  padding:30px 30px 26px;box-shadow:var(--shadow-sm)}
.watch-head{text-align:center;margin-bottom:22px}
.watch-head .en-tag{font-size:11.5px;letter-spacing:2.5px;color:var(--cyan);text-transform:uppercase;font-weight:700}
.watch-head h3{font-size:20px;font-weight:800;margin-top:6px;letter-spacing:-.3px}
.watch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.watch-item{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:14px;padding:18px 20px;transition:.25s}
.watch-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(63,179,217,.4)}
.watch-item b{display:inline-block;font-family:var(--mono);font-size:12px;font-weight:800;color:var(--cyan);
  background:rgba(0,40,144,.07);border:1px solid rgba(0,40,144,.12);padding:2px 10px;border-radius:999px}
.watch-item h4{font-size:14.5px;font-weight:800;margin:9px 0 5px}
.watch-item p{font-size:12.5px;color:var(--muted);line-height:1.6}
.watch-item span{display:block;margin-top:7px;font-size:11px;color:var(--faint)}
.watch-foot{display:flex;justify-content:center;gap:12px;margin-top:22px}

/* ---------- Section ---------- */
section{padding:76px 0}
.sec-alt{background:linear-gradient(180deg,rgba(208,222,255,.32),rgba(227,236,255,.55));
  border-top:1px solid rgba(0,40,144,.06);border-bottom:1px solid rgba(0,40,144,.06)}
.sec-head{text-align:center;max-width:800px;margin:0 auto 48px}
.sec-head .en-tag{font-size:12px;letter-spacing:3px;color:var(--cyan);text-transform:uppercase;font-weight:700}
.sec-head h2{font-size:clamp(24px,3vw,36px);font-weight:800;margin:10px 0 12px;letter-spacing:-.4px}
.sec-head p{color:var(--muted);font-size:15.5px;max-width:860px;margin-left:auto;margin-right:auto}
.sec-head.left{text-align:left;margin-left:0}
.sec-head h2 .n{font-variant-numeric:tabular-nums}

/* ---------- Cards ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--bg2);border:1px solid rgba(0,40,144,.07);border-radius:var(--radius);padding:30px;
  box-shadow:var(--shadow-sm);transition:.28s;position:relative}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.4)}
.card .ico{width:48px;height:48px;border-radius:13px;background:var(--grad-soft);
  border:1px solid rgba(0,40,144,.12);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--txt);line-height:1.45}
.card p{color:var(--muted);font-size:14px}
.card .tag{display:inline-block;margin-top:14px;padding:3px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(0,40,144,.07);color:var(--cyan);border:1px solid rgba(0,40,144,.16)}
.card .src{margin-top:14px;font-size:12px;color:var(--faint);display:block}
.card-num{position:absolute;top:14px;right:20px;font-family:var(--mono);font-size:13px;font-weight:700;color:rgba(0,40,144,.16)}

/* ---------- 探索中心：Bento 可视化栏目卡 ---------- */
.explore{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.viz-card{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:var(--radius-lg);padding:26px;
  box-shadow:var(--shadow-sm);transition:.3s;position:relative;overflow:hidden;display:flex;flex-direction:column;min-height:216px}
.viz-card.span3{grid-column:span 3}
.viz-card.span2{grid-column:span 2}
.viz-card::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .4s}
.viz-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.45)}
.viz-card:hover::before{transform:scaleX(1)}
.viz-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.viz-ico{width:46px;height:46px;border-radius:13px;background:linear-gradient(135deg,#002890,#1168bf);
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(0,40,144,.22);transition:.3s}
.viz-ico svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.viz-card:hover .viz-ico{transform:scale(1.06) rotate(-3deg);box-shadow:0 10px 24px rgba(0,40,144,.34)}
.viz-no{font-family:var(--mono);font-size:12px;font-weight:700;color:rgba(0,40,144,.22);letter-spacing:1px}
.viz-card .en-label{font-size:10.5px;letter-spacing:2px;text-transform:uppercase;color:var(--sky);font-weight:700}
.viz-card h3{font-size:17px;font-weight:800;margin:0 0 8px;letter-spacing:-.2px}
.viz-card.span3 h3{font-size:20px}
.viz-card p{font-size:13px;color:var(--muted);flex:1;max-width:560px}
.viz-card .metric{margin-top:14px;padding-top:14px;border-top:1px dashed rgba(0,40,144,.12);
  display:flex;align-items:baseline;gap:8px}
.viz-card .metric b{font-family:var(--mono);font-size:24px;font-weight:800;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.viz-card .metric span{font-size:12px;color:var(--faint)}
.viz-card .go{position:absolute;right:24px;bottom:22px;font-size:12.5px;font-weight:700;color:var(--cyan);
  transition:.3s}
.viz-card:hover .go{transform:translateX(4px)}

/* ---------- 深空科技带（Huawei 式暗色对比段） ---------- */
.dark-band{position:relative;background:linear-gradient(160deg,#001235 0%,#001a4d 52%,#00091d 100%);
  color:#fff;overflow:hidden;padding:84px 0}
.dark-band::before{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(125,209,239,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(125,209,239,.10) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 30%,#000 30%,transparent 100%);
          mask-image:radial-gradient(ellipse 70% 70% at 50% 30%,#000 30%,transparent 100%)}
.dark-band::after{content:"";position:absolute;top:-180px;right:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(63,179,217,.28),transparent 70%)}
.dark-band>*{position:relative;z-index:1}
.dark-band .en-tag{font-size:12px;letter-spacing:3px;color:#7dd1ef;text-transform:uppercase;font-weight:700}
.dark-band h2{font-size:clamp(24px,3vw,34px);font-weight:800;margin:10px 0 12px;color:#fff;letter-spacing:-.4px}
.dark-band p{color:rgba(255,255,255,.72)}
.dark-band .card{background:rgba(255,255,255,.05);border:1px solid rgba(125,209,239,.18);box-shadow:none;backdrop-filter:blur(6px)}
.dark-band .card:hover{background:rgba(255,255,255,.08);border-color:rgba(125,209,239,.45);transform:translateY(-5px)}
.dark-band .card h3{color:#fff}
.dark-band .card p{color:rgba(255,255,255,.66)}
.dark-band .card .ico{background:rgba(125,209,239,.12);border-color:rgba(125,209,239,.25)}
.dark-band .card .tag{background:rgba(125,209,239,.12);border-color:rgba(125,209,239,.3);color:#7dd1ef}
.dark-band .card .src{color:rgba(255,255,255,.45)}
.dark-band .sec-head p{color:rgba(255,255,255,.66)}

/* ---------- 数据看板 ---------- */
.stat-band{background:linear-gradient(135deg,rgba(0,40,144,.05),rgba(63,179,217,.10));
  border:1px solid rgba(0,40,144,.10);border-radius:22px;padding:46px 30px;box-shadow:var(--shadow-sm)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;text-align:center}
.stat .num{font-size:clamp(28px,3.4vw,44px);font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;font-family:var(--mono);letter-spacing:-1px}
.stat .num em{font-style:normal;font-size:.52em}
.stat .label{color:var(--txt);font-size:14.5px;font-weight:600;margin-top:6px}
.stat .note{color:var(--faint);font-size:12px;margin-top:2px}
.src-note{text-align:center;color:var(--faint);font-size:12.5px;margin-top:22px}
.stat-compact .num{font-size:clamp(22px,2.5vw,32px)}

/* ---------- 图表组件 ---------- */
.chart-card{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:var(--radius-lg);padding:26px 26px 20px;box-shadow:var(--shadow-sm)}
.chart-card .c-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:6px}
.chart-card h3{font-size:16.5px;font-weight:700;letter-spacing:-.2px}
.chart-card .unit{font-size:11.5px;color:var(--faint);font-family:var(--mono)}
.chart-card .c-sub{font-size:12.5px;color:var(--muted);margin-bottom:18px}
.chart-card svg{width:100%;height:auto;display:block;overflow:visible}
.chart-card .c-src{font-size:11.5px;color:var(--faint);margin-top:14px;padding-top:12px;border-top:1px dashed rgba(0,40,144,.12)}
.ax-l{font-size:10.5px;fill:#6b76a0;font-family:-apple-system,sans-serif}
.ax-t{font-size:11px;fill:#52608a;font-weight:600;font-family:-apple-system,sans-serif}
.ax-v{font-size:11.5px;fill:#0a1a40;font-weight:700;font-family:ui-monospace,monospace}
.grid-line{stroke:rgba(0,40,144,.09);stroke-width:1;stroke-dasharray:3 5}
.bar{transition:opacity .2s;cursor:default}
.bar:hover{opacity:.82}
.area-anim{stroke-dasharray:1400;stroke-dashoffset:1400;transition:stroke-dashoffset 1.8s ease}
.in .area-anim{stroke-dashoffset:0}
.bar-grow{transform-origin:bottom;transform:scaleY(0);transition:transform .9s cubic-bezier(.2,.8,.25,1)}
.in .bar-grow{transform:scaleY(1)}
.donut-seg{transition:stroke-dashoffset 1.2s ease}

/* ---------- 图例 / 标签 ---------- */
.legend{display:flex;flex-wrap:wrap;gap:14px;margin-top:14px}
.legend span{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:var(--muted)}
.legend i{width:10px;height:10px;border-radius:3px;display:inline-block}

/* ---------- Tabs（交互） ---------- */
.tabbar{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:32px}
.tabbar button{background:rgba(255,255,255,.7);border:1px solid var(--line);color:var(--muted);font-family:var(--font);
  font-size:13.5px;font-weight:600;padding:9px 20px;border-radius:999px;cursor:pointer;transition:.22s;box-shadow:var(--shadow-sm)}
.tabbar button:hover{color:var(--cyan);border-color:rgba(63,179,217,.5)}
.tabbar button.on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 22px rgba(0,40,144,.26)}
.tabpanel{display:none}
.tabpanel.on{display:block;animation:fadeUp .5s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:26px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2.5px;border-radius:2px;
  background:linear-gradient(180deg,#3fb3d9,#1168bf,#002890)}
.tl-item{position:relative;padding:0 0 36px 26px}
.tl-item::before{content:"";position:absolute;left:-26px;top:8px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3.5px solid #3fb3d9;box-shadow:0 0 0 4px rgba(63,179,217,.15)}
.tl-item:nth-child(3n+2)::before{border-color:#1168bf;box-shadow:0 0 0 4px rgba(17,104,191,.15)}
.tl-item:nth-child(3n)::before{border-color:#002890;box-shadow:0 0 0 4px rgba(0,40,144,.13)}
.tl-item .year{font-size:14px;font-weight:800;color:var(--gold);letter-spacing:1px}
.tl-item h3{font-size:17.5px;margin:4px 0 8px;font-weight:700}
.tl-item p{color:var(--muted);font-size:14px}
.tl-item .src{font-size:12px;color:var(--faint);margin-top:6px;display:block}

/* ---------- 产业链图谱 ---------- */
.chain{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.chain .col{background:#fff;border:1px solid rgba(0,40,144,.07);border-radius:var(--radius);padding:26px;position:relative;
  box-shadow:var(--shadow-sm);transition:.28s;overflow:hidden}
.chain .col::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,#002890,#3fb3d9);opacity:0;transition:.28s}
.chain .col:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.chain .col:hover::before{opacity:1}
.chain .col .no{position:absolute;top:12px;right:18px;font-size:46px;font-weight:800;color:rgba(0,40,144,.06);
  font-family:var(--mono)}
.chain .col h3{font-size:16.5px;font-weight:700;margin-bottom:2px}
.chain .col .en{font-size:11px;letter-spacing:1.5px;color:var(--faint);text-transform:uppercase;margin-bottom:14px}
.chain ul{list-style:none}
.chain ul li{font-size:13.5px;color:var(--muted);padding:7px 0 7px 18px;position:relative;border-bottom:1px dashed rgba(0,40,144,.10)}
.chain ul li:last-child{border-bottom:none}
.chain ul li::before{content:"◆";position:absolute;left:0;font-size:9px;top:12px;color:#3fb3d9}

/* ---------- 三方对照 ---------- */
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.compare .card{border-top:3.5px solid transparent}
.compare .card.cn{border-top-color:#1168bf}
.compare .card.us{border-top-color:var(--violet)}
.compare .card.eu{border-top-color:var(--gold)}
.compare .flag{font-size:13px;color:var(--faint);letter-spacing:1px;font-weight:600}
.compare h3{font-size:17px}
.compare ul{list-style:none;margin-top:8px}
.compare li{font-size:13.5px;color:var(--muted);padding:6px 0 6px 18px;position:relative}
.compare li::before{content:"▸";position:absolute;left:0;color:var(--cyan);font-size:12px}

/* ---------- 规格表（国际取证追踪） ---------- */
.spec-wrap{overflow-x:auto;border:1px solid rgba(0,40,144,.10);border-radius:var(--radius);box-shadow:var(--shadow-sm);background:#fff}
table.spec{width:100%;border-collapse:collapse;min-width:720px;font-size:13.5px}
table.spec thead th{background:linear-gradient(180deg,rgba(0,40,144,.06),rgba(63,179,217,.08));
  color:var(--txt);font-size:12.5px;font-weight:700;letter-spacing:.4px;text-align:left;padding:14px 16px;
  border-bottom:1px solid rgba(0,40,144,.12);white-space:nowrap}
table.spec td{padding:14px 16px;border-bottom:1px solid rgba(0,40,144,.07);color:var(--muted);vertical-align:top}
table.spec tbody tr:last-child td{border-bottom:none}
table.spec tbody tr:hover{background:rgba(63,179,217,.05)}
table.spec td b{color:var(--txt)}
.st{display:inline-block;padding:2.5px 10px;border-radius:999px;font-size:11.5px;font-weight:700;white-space:nowrap}
.st-ok{background:rgba(13,138,79,.10);color:#0d8a4f;border:1px solid rgba(13,138,79,.25)}
.st-go{background:rgba(17,104,191,.10);color:#1168bf;border:1px solid rgba(17,104,191,.25)}
.st-wait{background:rgba(201,152,42,.12);color:#9c7420;border:1px solid rgba(201,152,42,.3)}
.st-stop{background:rgba(120,130,160,.12);color:#6b76a0;border:1px solid rgba(120,130,160,.3)}

/* ---------- 术语表 ---------- */
.glossary{border:1px solid rgba(0,40,144,.10);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);background:#fff}
.glossary .row{display:grid;grid-template-columns:250px 1fr;border-bottom:1px solid rgba(0,40,144,.08);transition:.2s}
.glossary .row:last-child{border-bottom:none}
.glossary .row:hover{background:rgba(63,179,217,.05)}
.glossary .term{padding:17px 24px;background:rgba(0,40,144,.04);font-weight:700;font-size:14.5px;color:var(--txt)}
.glossary .term small{display:block;font-weight:500;color:var(--faint);font-size:11.5px;letter-spacing:.4px;margin-top:2px}
.glossary .def{padding:17px 24px;color:var(--muted);font-size:14px;border-left:1px solid rgba(0,40,144,.08)}

/* ---------- 资讯 ---------- */
.news-item{display:flex;gap:20px;background:#fff;border:1px solid rgba(0,40,144,.07);border-radius:var(--radius);
  padding:24px 28px;margin-bottom:18px;transition:.28s;align-items:flex-start;box-shadow:var(--shadow-sm)}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.4)}
.news-item .date{min-width:64px;text-align:center;padding:6px 16px 0 0;border-right:1px dashed rgba(0,40,144,.14)}
.news-item .date b{display:block;font-size:20px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-family:var(--mono)}
.news-item .date span{font-size:11.5px;color:var(--faint);letter-spacing:.5px}
.news-item h3{font-size:16px;margin:8px 0 7px;font-weight:700;color:var(--txt);line-height:1.5}
.news-item p{color:var(--muted);font-size:13.5px;line-height:1.7}
.news-item .meta{margin-top:9px;font-size:12px;color:var(--faint);letter-spacing:.2px;
  padding-left:9px;border-left:2px solid rgba(63,179,217,.45);line-height:1.4}
.news-item .cat{display:inline-block;padding:2px 11px;border-radius:999px;font-size:11.5px;font-weight:600;margin-right:8px;
  background:rgba(0,40,144,.07);color:var(--cyan);border:1px solid rgba(0,40,144,.14)}

/* ---------- 权威信源 ---------- */
.source-band{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:22px;padding:38px 30px;text-align:center;box-shadow:var(--shadow-sm)}
.source-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px}
.source-links a{padding:7px 18px;border:1px solid rgba(0,40,144,.14);border-radius:999px;font-size:13.5px;color:var(--muted);
  background:rgba(255,255,255,.7);transition:.2s;font-weight:500}
.source-links a:hover{border-color:var(--cyan);color:var(--cyan);background:#fff;box-shadow:var(--shadow-sm)}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(135deg,#001235 0%,#002890 60%,#1168bf 100%);border-radius:24px;padding:60px 36px;
  text-align:center;position:relative;overflow:hidden;box-shadow:0 24px 64px rgba(0,18,53,.35)}
.cta-band::before{content:"";position:absolute;top:-120px;right:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(63,179,217,.30),transparent 70%)}
.cta-band::after{content:"";position:absolute;bottom:-140px;left:-100px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(125,209,239,.18),transparent 70%)}
.cta-band>*{position:relative;z-index:1}
.cta-band .en-tag{font-size:12px;letter-spacing:3px;color:#7dd1ef;text-transform:uppercase;font-weight:700}
.cta-band h2{font-size:clamp(24px,3vw,34px);margin:10px 0 12px;color:#fff;letter-spacing:-.3px}
.cta-band p{color:rgba(255,255,255,.78);max-width:640px;margin:0 auto 30px}
.cta-band .btn-primary{background:#fff;color:#002890;box-shadow:0 8px 28px rgba(0,0,0,.25)}
.cta-band .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(0,0,0,.32)}
.cta-band .btn-ghost{border:1.5px solid rgba(255,255,255,.4);color:#fff;background:transparent}
.cta-band .btn-ghost:hover{border-color:#7dd1ef;color:#7dd1ef;background:rgba(255,255,255,.06)}

/* ---------- 文章页 ---------- */
.article{max-width:860px;margin:0 auto;background:#fff;border:1px solid rgba(0,40,144,.07);border-radius:22px;
  padding:48px 52px;box-shadow:var(--shadow)}
.article .a-meta{color:var(--faint);font-size:13px;margin-bottom:28px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.article h1{letter-spacing:-.4px}
.article h2{font-size:21px;margin:34px 0 14px;padding-left:14px;border-left:4px solid #1168bf;border-radius:2px}
.article h3{font-size:17px;margin:24px 0 10px}
.article p{color:#2a3a66;font-size:15.5px;margin-bottom:16px}
.article strong{color:var(--txt)}
.article blockquote{border-left:4px solid #3fb3d9;background:linear-gradient(90deg,rgba(63,179,217,.08),rgba(63,179,217,.02));
  padding:16px 20px;border-radius:0 12px 12px 0;color:var(--muted);font-size:14.5px;margin:20px 0}
.article ul{margin:0 0 16px 22px;color:#2a3a66;font-size:15px}
.article .cite{font-size:12.5px;color:var(--faint);border-top:1px solid rgba(0,40,144,.10);padding-top:18px;margin-top:36px;line-height:2}

/* ---------- 页内锚点导航 ---------- */
.pill-nav{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:0 auto 40px;max-width:900px}
.pill-nav a{padding:7px 16px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--muted);
  background:rgba(255,255,255,.7);transition:.2s;font-weight:500}
.pill-nav a:hover{color:var(--cyan);border-color:rgba(63,179,217,.5);transform:translateY(-2px)}

/* ---------- 双语标注 ---------- */
.bi{display:block;font-size:11.5px;letter-spacing:1.4px;color:var(--faint);text-transform:uppercase;font-weight:600}
.badge{display:inline-block;padding:2px 10px;border-radius:6px;font-size:11.5px;font-weight:700;
  background:rgba(0,40,144,.07);color:var(--cyan);border:1px solid rgba(0,40,144,.14);margin-right:6px}
.badge-en{background:rgba(63,179,217,.12);color:#1f7fa8;border-color:rgba(63,179,217,.3)}

/* ---------- Footer ---------- */
.site-footer{background:linear-gradient(180deg,#001235 0%,#000c24 100%);padding:56px 0 30px;position:relative;z-index:1;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;margin-bottom:34px}
.footer-grid h4{font-size:14px;margin-bottom:14px;color:#fff}
.footer-grid a{display:block;color:rgba(255,255,255,.55);font-size:13px;padding:4px 0;transition:.2s}
.footer-grid a:hover{color:#7dd1ef;transform:translateX(2px)}
.footer-grid p{color:rgba(255,255,255,.45);font-size:13px}
.footer-grid .brand{color:#fff}
.footer-grid .brand small{color:rgba(255,255,255,.4)}
.copyright{border-top:1px solid rgba(255,255,255,.08);padding-top:22px;text-align:center;color:rgba(255,255,255,.38);font-size:12.5px;line-height:2}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
input,select,textarea{width:100%;background:#fff;border:1px solid rgba(0,40,144,.16);border-radius:11px;
  padding:12px 16px;color:var(--txt);font-size:14.5px;font-family:var(--font);outline:none;transition:.2s;box-shadow:var(--shadow-sm)}
input::placeholder,textarea::placeholder{color:#9aa6c4}
input:focus,select:focus,textarea:focus{border-color:#3fb3d9;box-shadow:0 0 0 4px rgba(63,179,217,.15)}
.form-status{margin-top:14px;color:#0d8a4f;font-size:14px;min-height:22px;font-weight:600}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:rgba(255,255,255,.9);backdrop-filter:blur(10px);color:var(--cyan);font-size:17px;cursor:pointer;
  box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s;z-index:120;display:flex;align-items:center;justify-content:center}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}

/* ---------- 动画 ---------- */
.fade{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.fade.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .fade{opacity:1;transform:none;transition:none}
  .bar-grow{transform:none;transition:none}
  .area-anim{stroke-dashoffset:0;transition:none}
  .ticker .roll{animation:none}
}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .explore{grid-template-columns:repeat(4,1fr)}
  .viz-card.span3{grid-column:span 4}
  .viz-card.span2{grid-column:span 2}
}
@media(max-width:960px){
  .g4,.stat-grid,.chain,.compare{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .explore{grid-template-columns:repeat(2,1fr)}
  .viz-card.span3,.viz-card.span2{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav{position:fixed;top:64px;right:0;left:0;background:rgba(243,247,255,.97);backdrop-filter:blur(20px);flex-direction:column;
    padding:18px 24px;border-bottom:1px solid rgba(0,40,144,.08);display:none;align-items:stretch;gap:2px}
  .nav.open{display:flex}
  .burger{display:block}
  .article{padding:32px 26px}
  .brief-grid{grid-template-columns:repeat(2,1fr)}
  .watch-grid{grid-template-columns:repeat(2,1fr)}
  .ticker-more{display:none}
  .ticker{padding:10px 18px}
}
@media(max-width:600px){
  .g2,.g3,.g4,.stat-grid,.chain,.compare,.form-grid,.glossary .row,.explore{grid-template-columns:1fr}
  .viz-card.span3,.viz-card.span2{grid-column:span 1}
  .glossary .term{border-bottom:1px solid rgba(0,40,144,.08)}
  .glossary .def{border-left:none}
  .footer-grid{grid-template-columns:1fr}
  .news-item{flex-direction:column;gap:8px}
  .hero{padding:118px 0 50px}
  section{padding:56px 0}
  .dark-band{padding:60px 0}
  .brief-grid,.watch-grid{grid-template-columns:1fr}
  .watch{padding:22px 18px}
  .ticker{gap:12px;padding:0 14px}
  .ticker .track{height:40px}
  .ticker .roll{font-size:12.5px}
  .tk{display:none}
}

/* ==================================================================
   V3.2 新增 · 知识门户增强（导航下拉 / 活动日历 / FAQ / 知识地图 / 学习路径）
   ================================================================== */

/* ---------- 导航下拉（权威门户式） ---------- */
.nav .drop{position:relative}
.nav .drop>a::after{content:"▾";font-size:9px;margin-left:5px;opacity:.55;display:inline-block;transform:translateY(-1px)}
.nav .drop-menu{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(8px);
  min-width:196px;background:#fff;border:1px solid rgba(0,40,144,.10);border-radius:14px;padding:8px;
  box-shadow:0 20px 52px rgba(0,40,144,.18);opacity:0;visibility:hidden;transition:.22s;z-index:130}
.nav .drop-menu::before{content:"";position:absolute;top:-8px;left:0;right:0;height:8px}
.nav .drop:hover .drop-menu,.nav .drop:focus-within .drop-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav .drop-menu a{display:block;padding:9px 14px;border-radius:9px;font-size:13.5px;color:var(--muted);font-weight:500}
.nav .drop-menu a:hover,.nav .drop-menu a.active{background:rgba(0,40,144,.06);color:var(--cyan)}

/* ---------- 价值卡（知识门户的六个价值） ---------- */
.val-card{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:var(--radius);padding:28px 26px;
  box-shadow:var(--shadow-sm);transition:.28s;position:relative;overflow:hidden}
.val-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.4)}
.val-card .v-no{font-family:var(--mono);font-size:12px;font-weight:700;color:rgba(0,40,144,.22);letter-spacing:1px}
.val-card .v-ico{width:46px;height:46px;border-radius:13px;background:var(--grad-soft);border:1px solid rgba(0,40,144,.12);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin:12px 0 14px}
.val-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.val-card p{font-size:13.5px;color:var(--muted)}
.val-card .v-en{font-size:10.5px;letter-spacing:1.8px;text-transform:uppercase;color:var(--sky);font-weight:700}

/* ---------- 活动日历 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:32px}
.filter-bar button{background:rgba(255,255,255,.72);border:1px solid var(--line);color:var(--muted);font-family:var(--font);
  font-size:13.5px;font-weight:600;padding:9px 20px;border-radius:999px;cursor:pointer;transition:.22s;box-shadow:var(--shadow-sm)}
.filter-bar button:hover{color:var(--cyan);border-color:rgba(63,179,217,.5)}
.filter-bar button.on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 22px rgba(0,40,144,.26)}
.ev-month{display:flex;align-items:center;gap:14px;margin:34px 0 18px}
.ev-month .m{font-family:var(--mono);font-size:15px;font-weight:800;color:#fff;background:var(--grad);
  padding:5px 14px;border-radius:9px;letter-spacing:.5px}
.ev-month .line{flex:1;height:1px;background:linear-gradient(90deg,rgba(0,40,144,.16),transparent)}
.ev-month .note{font-size:12.5px;color:var(--faint)}
.ev-list{display:flex;flex-direction:column;gap:16px}
.ev-card{display:flex;gap:22px;background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:var(--radius);
  padding:24px 26px;box-shadow:var(--shadow-sm);transition:.28s;align-items:flex-start}
.ev-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.4)}
.ev-date{flex:none;width:84px;text-align:center;border-right:1px dashed rgba(0,40,144,.14);padding-right:18px}
.ev-date b{display:block;font-family:var(--mono);font-size:23px;font-weight:800;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.25}
.ev-date span{font-size:11.5px;color:var(--faint);letter-spacing:.5px}
.ev-body{flex:1;min-width:0}
.ev-body h3{font-size:16.5px;font-weight:700;margin:8px 0 8px;letter-spacing:-.2px}
.ev-body p{font-size:13.5px;color:var(--muted)}
.ev-meta{margin-top:10px;font-size:12px;color:var(--faint);display:flex;gap:18px;flex-wrap:wrap}
.ev-tags{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.st-live{background:rgba(13,138,79,.10);color:#0d8a4f;border:1px solid rgba(13,138,79,.25)}
.st-soon{background:rgba(201,152,42,.12);color:#9c7420;border:1px solid rgba(201,152,42,.3)}
.st-done{background:rgba(120,130,160,.12);color:#6b76a0;border:1px solid rgba(120,130,160,.3)}

/* ---------- FAQ（原生 details） ---------- */
.faq{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:14px;margin-bottom:12px;
  box-shadow:var(--shadow-sm);overflow:hidden;transition:.25s}
.faq-item[open]{border-color:rgba(63,179,217,.45);box-shadow:var(--shadow)}
.faq-item summary{cursor:pointer;list-style:none;padding:18px 24px;font-size:15.5px;font-weight:700;color:var(--txt);
  display:flex;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"Q";flex:none;width:24px;height:24px;border-radius:7px;background:var(--grad);color:#fff;
  font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;font-family:var(--mono)}
.faq-item summary::after{content:"＋";margin-left:auto;color:var(--cyan);font-size:15px;font-weight:700}
.faq-item[open] summary::after{content:"－"}
.faq-item .a{padding:0 24px 20px 60px;color:var(--muted);font-size:14px}
.faq-item .a strong{color:var(--txt)}

/* ---------- 知识地图 ---------- */
.km-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.km-card{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:var(--radius-lg);padding:26px;
  box-shadow:var(--shadow-sm);transition:.28s;position:relative;overflow:hidden;display:flex;flex-direction:column}
.km-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad);transform:scaleY(0);
  transform-origin:top;transition:transform .35s}
.km-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.km-card:hover::before{transform:scaleY(1)}
.km-card .km-no{font-family:var(--mono);font-size:12px;font-weight:700;color:rgba(0,40,144,.22)}
.km-card h3{font-size:17px;font-weight:800;margin:8px 0 4px}
.km-card .km-en{font-size:10.5px;letter-spacing:1.8px;text-transform:uppercase;color:var(--sky);font-weight:700;margin-bottom:12px}
.km-card ul{list-style:none;font-size:13px;color:var(--muted);flex:1}
.km-card li{padding:5px 0 5px 16px;position:relative}
.km-card li::before{content:"▸";position:absolute;left:0;color:var(--cyan);font-size:11px}
.km-card .km-go{margin-top:14px;font-size:12.5px;font-weight:700;color:var(--cyan);display:inline-block}

/* ---------- 学习路径 ---------- */
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.path-card{background:#fff;border:1px solid rgba(0,40,144,.08);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;transition:.28s}
.path-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.4)}
.path-card .p-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:6px}
.path-card h3{font-size:17px;font-weight:800}
.path-card .p-time{font-family:var(--mono);font-size:12.5px;font-weight:700;color:var(--cyan);background:rgba(0,40,144,.07);
  padding:3px 10px;border-radius:999px;border:1px solid rgba(0,40,144,.14)}
.path-card .p-for{font-size:12.5px;color:var(--faint);margin-bottom:16px}
.path-steps{list-style:none;counter-reset:s;flex:1}
.path-steps li{counter-increment:s;position:relative;padding:9px 0 9px 34px;font-size:13.5px;color:var(--muted);
  border-bottom:1px dashed rgba(0,40,144,.10)}
.path-steps li:last-child{border-bottom:none}
.path-steps li::before{content:counter(s);position:absolute;left:0;top:8px;width:22px;height:22px;border-radius:7px;
  background:var(--grad-soft);border:1px solid rgba(0,40,144,.12);color:var(--cyan);font-size:11.5px;font-weight:800;
  display:flex;align-items:center;justify-content:center;font-family:var(--mono)}
.path-steps a{color:var(--txt);font-weight:600}
.path-steps a:hover{color:var(--cyan)}

/* ---------- 响应式补充 ---------- */
@media(max-width:960px){
  .km-grid,.path-grid{grid-template-columns:repeat(2,1fr)}
  .nav .drop-menu{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:none;
    padding:0 0 0 12px;min-width:0;background:transparent}
  .nav .drop>a::after{content:""}
}
@media(max-width:600px){
  .km-grid,.path-grid{grid-template-columns:1fr}
  .ev-card{flex-direction:column;gap:12px}
  .ev-date{width:auto;text-align:left;border-right:none;border-bottom:1px dashed rgba(0,40,144,.14);padding:0 0 10px}
  .ev-date b{display:inline;margin-right:8px}
}

/* ==================================================================
   V3.6 新增 · 资讯中心（头条卡 / 筛选 / 分页）与篇章切换
   ================================================================== */

/* ---------- 头条卡（置顶要闻） ---------- */
.feature{display:grid;grid-template-columns:1.4fr 1fr;background:#fff;border:1px solid rgba(0,40,144,.10);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);margin-bottom:32px;transition:.3s}
.feature:hover{box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.4)}
.feature-main{padding:34px 38px}
.feature-tag{display:inline-block;font-size:10.5px;font-weight:800;letter-spacing:1.6px;color:#fff;
  background:var(--grad);padding:4px 13px;border-radius:999px}
.feature h2{font-size:clamp(19px,2.3vw,25px);font-weight:800;margin:15px 0 13px;line-height:1.42;letter-spacing:-.4px}
.feature p{font-size:14.5px;color:var(--muted);line-height:1.85}
.feature .f-meta{margin-top:16px;font-size:12px;color:var(--faint);display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.feature-side{background:linear-gradient(160deg,#001235,#01307f 60%,#013a86);color:#fff;
  padding:30px 32px;display:flex;flex-direction:column;justify-content:center;gap:18px;position:relative;overflow:hidden}
.feature-side::after{content:"";position:absolute;width:220px;height:220px;right:-70px;bottom:-70px;border-radius:50%;
  background:radial-gradient(circle,rgba(63,179,217,.35),transparent 70%)}
.feature-side .fs-item{border-left:2px solid rgba(125,209,239,.65);padding-left:15px;position:relative;z-index:1}
.feature-side .fs-item b{font-family:var(--mono);font-size:21px;font-weight:800;color:#7dd1ef;display:block;line-height:1.3}
.feature-side .fs-item span{font-size:12.5px;color:rgba(255,255,255,.72)}

/* ---------- 工具栏（筛选 + 计数） ---------- */
.news-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:24px}
.news-toolbar .filter-bar{margin-bottom:0;justify-content:flex-start}
.news-count{font-size:13px;color:var(--faint);white-space:nowrap}
.news-count b{font-family:var(--mono);font-size:15px;color:var(--cyan);font-weight:800}

/* ---------- 列表（简约两行摘要） ---------- */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-list .news-item p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-empty{text-align:center;color:var(--faint);padding:46px 0;font-size:14px}

/* ---------- 分页器 ---------- */
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:40px;flex-wrap:wrap}
.pager button{min-width:38px;height:38px;padding:0 13px;border-radius:10px;border:1px solid rgba(0,40,144,.14);
  background:#fff;color:var(--muted);font-family:var(--font);font-size:13.5px;font-weight:600;cursor:pointer;
  transition:.2s;box-shadow:var(--shadow-sm)}
.pager button:hover:not(:disabled):not(.on){color:var(--cyan);border-color:rgba(63,179,217,.5);transform:translateY(-2px)}
.pager button.on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 20px rgba(0,40,144,.24)}
.pager button:disabled{opacity:.35;cursor:not-allowed}
.pager .pg-info{font-size:12.5px;color:var(--faint);margin:0 6px}

/* ---------- 篇章切换（详情页上一篇/下一篇） ---------- */
.art-nav{max-width:860px;margin:46px auto 0;display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center}
.art-nav .an-btn{display:flex;flex-direction:column;gap:4px;padding:16px 20px;background:#fff;
  border:1px solid rgba(0,40,144,.10);border-radius:14px;box-shadow:var(--shadow-sm);transition:.25s;min-width:0}
.art-nav .an-btn:hover:not(.disabled){transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(63,179,217,.45)}
.art-nav .an-btn .an-label{font-size:11px;letter-spacing:1.4px;color:var(--faint);font-weight:700;text-transform:uppercase}
.art-nav .an-btn .an-title{font-size:13.8px;font-weight:700;color:var(--txt);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.art-nav .an-btn.next{text-align:right}
.art-nav .an-btn.disabled{opacity:.42;pointer-events:none}
.art-nav .an-idx{font-family:var(--mono);font-size:13px;font-weight:800;color:var(--cyan);white-space:nowrap;
  background:rgba(0,40,144,.06);border:1px solid rgba(0,40,144,.12);padding:9px 14px;border-radius:999px}
.art-nav .an-idx a{color:var(--muted);font-weight:600;font-family:var(--font);font-size:12.5px}
.art-nav .an-idx a:hover{color:var(--cyan)}
@media(max-width:960px){
  .feature{grid-template-columns:1fr}
  .news-toolbar{justify-content:flex-start}
}
@media(max-width:600px){
  .feature-main{padding:24px 20px}
  .feature-side{padding:24px 20px}
  .art-nav{grid-template-columns:1fr;gap:10px}
  .art-nav .an-btn.next{text-align:left}
  .art-nav .an-idx{justify-self:center}
}

/* 多篇详情：隐藏未选篇章 */
.article[hidden]{display:none}

/* ==================================================================
   V3.8 快讯矩阵层次升级：深色头条大卡 + 最新要闻列表 + 彩色分类徽章
   ================================================================== */
.brief-wrap{display:grid;grid-template-columns:1.02fr 1.48fr;gap:20px;margin-bottom:20px}

/* —— 深色头条大卡 —— */
.brief-hero{position:relative;overflow:hidden;border-radius:var(--radius-lg);padding:30px 32px 26px;
  background:linear-gradient(150deg,#001235 0%,#01307f 55%,#0a4dbf 100%);color:#fff;display:flex;flex-direction:column;
  box-shadow:0 24px 60px rgba(0,19,53,.32);transition:.3s}
.brief-hero::after{content:"";position:absolute;width:260px;height:260px;right:-80px;bottom:-90px;border-radius:50%;
  background:radial-gradient(circle,rgba(63,179,217,.4),transparent 70%);pointer-events:none}
.brief-hero:hover{transform:translateY(-5px);box-shadow:0 32px 72px rgba(0,19,53,.42)}
.bh-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.bh-tag{background:rgba(125,209,239,.16);border:1px solid rgba(125,209,239,.42);color:#7dd1ef;
  font-size:11.5px;font-weight:700;padding:4px 13px;border-radius:999px;letter-spacing:1.2px;white-space:nowrap}
.bh-date{font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.62);font-variant-numeric:tabular-nums}
.brief-hero h3{font-size:clamp(19px,1.9vw,23px);font-weight:800;line-height:1.42;margin:16px 0 15px;
  letter-spacing:-.3px;position:relative;z-index:1}
.bh-stat{display:flex;align-items:center;gap:15px;background:rgba(255,255,255,.08);border:1px solid rgba(125,209,239,.26);
  border-radius:14px;padding:13px 18px;margin-bottom:15px;backdrop-filter:blur(6px);position:relative;z-index:1}
.bh-stat b{font-family:var(--mono);font-size:36px;font-weight:800;color:#7dd1ef;line-height:1;
  font-variant-numeric:tabular-nums}
.bh-stat .bh-stat-t span{display:block;font-size:13.5px;font-weight:700;letter-spacing:.3px}
.bh-stat .bh-stat-t em{font-style:normal;font-size:11.5px;color:rgba(255,255,255,.62)}
.brief-hero p{font-size:13.5px;color:rgba(255,255,255,.8);line-height:1.78;flex:1;position:relative;z-index:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.bh-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:16px;
  padding-top:14px;border-top:1px dashed rgba(255,255,255,.2);position:relative;z-index:1}
.bh-foot span{font-size:11.5px;color:rgba(255,255,255,.55);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bh-foot em{font-style:normal;font-size:13px;font-weight:800;color:#7dd1ef;white-space:nowrap}

/* —— 最新要闻行列表 —— */
.brief-latest{background:#fff;border:1px solid rgba(0,40,144,.10);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:6px 26px 12px;display:flex;flex-direction:column;transition:.3s}
.brief-latest:hover{box-shadow:var(--shadow)}
.bl-head{display:flex;align-items:center;gap:10px;font-size:15.5px;font-weight:800;color:var(--txt);
  padding:16px 0 13px;border-bottom:1px solid rgba(0,40,144,.09);white-space:nowrap}
.bl-head em{font-style:normal;margin-left:auto;font-size:9.5px;letter-spacing:1.2px;text-transform:uppercase;
  color:var(--faint);font-weight:700}
.live-mini{width:9px;height:9px;border-radius:50%;background:#e23b3b;flex:none;animation:bl-pulse 1.6s ease-out infinite}
@keyframes bl-pulse{0%{box-shadow:0 0 0 0 rgba(226,59,59,.45)}70%{box-shadow:0 0 0 8px rgba(226,59,59,0)}100%{box-shadow:0 0 0 0 rgba(226,59,59,0)}}
.bl-row{display:flex;align-items:center;gap:13px;padding:13.5px 0;border-bottom:1px dashed rgba(0,40,144,.10);
  transition:.2s;min-width:0}
.bl-row:last-child{border-bottom:none}
.bl-row b{flex:none;font-family:var(--mono);font-size:11.5px;font-weight:700;color:var(--faint);
  font-variant-numeric:tabular-nums;width:42px}
.bl-row h4{flex:1;font-size:14.5px;font-weight:700;color:var(--txt);letter-spacing:.1px;line-height:1.45;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bl-row i{flex:none;font-style:normal;font-size:15px;color:var(--cyan);opacity:0;transform:translateX(-6px);transition:.22s}
.bl-row:hover{padding-left:6px;padding-right:2px}
.bl-row:hover h4{color:var(--cyan)}
.bl-row:hover i{opacity:1;transform:none}

/* —— 彩色分类徽章（全站通用） —— */
.cat-pill{display:inline-flex;align-items:center;font-size:11.5px;font-weight:800;padding:3.5px 13px;
  border-radius:999px;letter-spacing:.6px;flex:none;white-space:nowrap;color:#fff}
.p-pol{background:#002890}
.p-ind{background:#0d8a4f}
.p-intl{background:#006eb6}
.p-tal{background:#a31f9e}
.p-event{background:#c2551f}
.p-doc{background:#5a3cb4}

/* 四栏卡头改用徽章 */
.brief-head{gap:10px}
.brief-head .dot{display:none}

@media(max-width:960px){
  .brief-wrap{grid-template-columns:1fr}
}
@media(max-width:600px){
  .brief-hero{padding:24px 20px}
  .brief-latest{padding:4px 18px 10px}
  .bl-row h4{font-size:13.5px}
}

/* ==================================================================
   V3.9 图文并茂：hero 背景图 / 图说卡 / 场景配图 / 宽幅图文带
   ================================================================== */
.hero .hero-photo{position:absolute;inset:0;overflow:hidden;z-index:0;pointer-events:none}
.hero .hero-photo img{width:100%;height:100%;object-fit:cover;object-position:center 40%;opacity:.34}
.hero .hero-photo::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(243,247,255,.90) 0%,rgba(240,246,255,.84) 42%,rgba(227,236,255,.96) 100%)}
.hero .container{position:relative;z-index:2}
.hero .ticker{position:relative;z-index:3}
.hero{position:relative;overflow:hidden}

/* —— 图说卡 —— */
.fig-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.fig{display:flex;flex-direction:column;background:#fff;border:1px solid rgba(0,40,144,.10);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:.3s;color:inherit}
.fig:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(63,179,217,.42)}
.fig-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#eef3ff}
.fig-media img{width:100%;height:100%;object-fit:cover;transition:.55s}
.fig:hover .fig-media img{transform:scale(1.055)}
.fig-tag{position:absolute;left:14px;top:14px;z-index:2;background:rgba(0,18,53,.74);color:#fff;font-size:11px;
  font-weight:700;padding:4px 12px;border-radius:999px;letter-spacing:.9px;backdrop-filter:blur(6px)}
.fig-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.fig-body h3{font-size:16.5px;font-weight:800;margin-bottom:8px;letter-spacing:-.2px}
.fig-body p{font-size:13px;color:var(--muted);line-height:1.72;flex:1}
.fig-cap{margin-top:12px;padding-top:11px;border-top:1px dashed rgba(0,40,144,.12);font-size:11px;color:var(--faint);
  letter-spacing:.2px;display:flex;gap:8px;align-items:center}
.fig-cap::before{content:"";width:14px;height:2px;background:var(--grad);border-radius:2px;flex:none}

/* —— 应用场景卡配图 —— */
.scene-img{aspect-ratio:16/9;overflow:hidden;border-radius:12px;margin-bottom:15px;background:#eef3ff}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:.55s}
.card:hover .scene-img img{transform:scale(1.06)}

/* —— 宽幅图文带 —— */
.wide-fig{display:grid;grid-template-columns:1.08fr 1fr;border-radius:var(--radius-lg);overflow:hidden;background:#fff;
  border:1px solid rgba(0,40,144,.10);box-shadow:var(--shadow)}
.wf-media{position:relative;min-height:320px;background:#eef3ff}
.wf-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.wf-media .wf-tag{position:absolute;left:18px;top:18px;background:rgba(0,18,53,.72);color:#fff;font-size:11px;
  font-weight:700;padding:5px 13px;border-radius:999px;letter-spacing:1px;backdrop-filter:blur(6px)}
.wf-body{padding:36px 38px;display:flex;flex-direction:column;justify-content:center}
.wf-body .en-tag{margin-bottom:10px}
.wf-body h2{font-size:clamp(19px,2.1vw,25px);font-weight:800;line-height:1.38;margin-bottom:14px;letter-spacing:-.4px}
.wf-body p{font-size:14px;color:var(--muted);line-height:1.85}
.wf-list{list-style:none;margin-top:16px;font-size:13.5px;color:var(--muted)}
.wf-list li{padding:6px 0 6px 20px;position:relative;line-height:1.65}
.wf-list li::before{content:"▸";position:absolute;left:0;color:var(--cyan);font-size:11px}
.wf-list strong{color:var(--txt)}
.wf-cap{margin-top:16px;padding-top:12px;border-top:1px dashed rgba(0,40,144,.12);font-size:11px;color:var(--faint)}

/* —— 图片来源说明 —— */
.img-note{margin-top:14px;font-size:11.5px;color:var(--faint);text-align:center;line-height:1.7}

@media(max-width:960px){
  .fig-row{grid-template-columns:repeat(2,1fr)}
  .wide-fig{grid-template-columns:1fr}
  .wf-media{min-height:240px}
  .wf-body{padding:28px 26px}
}
@media(max-width:600px){
  .fig-row{grid-template-columns:1fr}
  .wf-body{padding:24px 20px}
}

/* ============================================================
   V3.10 在线咨询体系（与 www.evtol.bj.cn 同源同配置）
   悬浮咨询按钮 · 快速咨询弹窗 · 微信客服卡片 · 桌面客服唤起窗口
   ============================================================ */

/* ---------- 全站悬浮咨询组件（右下角，位于返回顶部上方） ---------- */
.float-consult{position:fixed;right:22px;bottom:82px;z-index:900;display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,#3fb3d9 0%,#1168bf 100%);color:#fff;font-size:14px;font-weight:700;letter-spacing:1px;
  padding:12px 20px;border:none;border-radius:100px;cursor:pointer;
  box-shadow:0 10px 28px rgba(17,104,191,.45);transition:transform .2s ease,box-shadow .2s ease;
  -webkit-tap-highlight-color:transparent;animation:float-consult-pulse 2.4s ease-in-out infinite}
.float-consult:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(17,104,191,.55)}
.float-consult svg{width:17px;height:17px;fill:currentColor;flex:none}
@keyframes float-consult-pulse{
  0%,100%{box-shadow:0 10px 28px rgba(17,104,191,.45),0 0 0 0 rgba(17,104,191,.35)}
  55%{box-shadow:0 10px 28px rgba(17,104,191,.45),0 0 0 12px rgba(17,104,191,0)}}
@media (max-width:576px){.float-consult{right:14px;bottom:76px;padding:12px 18px;font-size:13.5px}}

/* ---------- 快速咨询弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;pointer-events:none;transition:opacity .25s ease}
.modal[hidden]{display:none}
.modal:not([hidden]){opacity:1;pointer-events:auto}
.modal-backdrop{position:absolute;inset:0;background:rgba(15,31,74,.45);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.modal-panel{position:relative;width:100%;max-width:640px;max-height:calc(100vh - 40px);overflow-y:auto;background:#fff;
  border:1px solid rgba(0,40,144,.10);border-radius:20px;box-shadow:0 24px 80px rgba(0,40,144,.22);padding:36px;
  transform:translateY(16px);transition:transform .25s ease}
.modal:not([hidden]) .modal-panel{transform:translateY(0)}
.modal-close{position:absolute;top:16px;right:18px;width:38px;height:38px;border:none;background:rgba(0,40,144,.06);
  color:rgba(15,31,74,.55);border-radius:50%;font-size:26px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .2s,color .2s}
.modal-close:hover{background:rgba(0,40,144,.10);color:var(--primary,#002890)}
.modal-head{text-align:center;margin-bottom:18px}
.modal-head h3{font-size:22px;color:var(--txt);margin-bottom:6px}
.modal-head p{font-size:14px;color:var(--muted)}
.modal-form .form-group{margin-bottom:14px}
.modal-form .form-group>label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px;font-weight:600}
.modal-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.modal-form .checkbox-group.compact{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.checkbox-card{display:flex;align-items:center;gap:6px;padding:8px 10px;font-size:13px;border:1px solid rgba(0,40,144,.14);
  border-radius:8px;cursor:pointer;user-select:none;transition:.18s;color:var(--txt)}
.checkbox-card:hover{border-color:#3fb3d9;background:rgba(63,179,217,.06)}
.checkbox-card input{width:auto;box-shadow:none;accent-color:#1168bf;flex:none;margin:0}
.checkbox-card span::before{content:none}
.modal-form .form-status.error{color:#c0392b}
@media (max-width:640px){.modal-panel{padding:24px}.modal-form .form-row{grid-template-columns:1fr}
  .modal-form .checkbox-group.compact{grid-template-columns:repeat(2,1fr)}}

/* ---------- 弹窗内微信客服卡片（main.js 动态注入） ---------- */
.modal-kf-card{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 18px;
  background:linear-gradient(135deg,#eaf4ff 0%,#f7fbff 100%);border:1px solid rgba(17,104,191,.28);
  border-left:4px solid #1168bf;border-radius:12px;cursor:pointer;user-select:none;
  transition:transform .2s,box-shadow .2s,border-color .2s}
.modal-kf-card:hover,.modal-kf-card:focus-visible{transform:translateY(-2px);border-color:rgba(17,104,191,.55);
  box-shadow:0 12px 28px rgba(17,104,191,.22);outline:none}
.modal-kf-info strong{display:block;font-size:15px;font-weight:700;color:var(--txt);margin-bottom:3px}
.modal-kf-info span{display:block;font-size:12.5px;color:var(--muted)}
.modal-kf-cta{display:inline-block;margin-top:8px;padding:8px 22px;background:linear-gradient(135deg,#1168bf 0%,#3fb3d9 100%);
  color:#fff;font-size:14.5px;font-weight:800;font-style:normal;letter-spacing:2px;border-radius:999px;
  box-shadow:0 8px 22px rgba(17,104,191,.45),inset 0 1px 0 rgba(255,255,255,.35);animation:kf-cta-pulse 2.2s ease-in-out infinite}
.modal-kf-card:hover .modal-kf-cta{box-shadow:0 10px 28px rgba(17,104,191,.6),inset 0 1px 0 rgba(255,255,255,.35);transform:translateY(-1px)}
@keyframes kf-cta-pulse{
  0%,100%{box-shadow:0 8px 22px rgba(17,104,191,.45),inset 0 1px 0 rgba(255,255,255,.35)}
  50%{box-shadow:0 8px 26px rgba(63,179,217,.65),0 0 0 5px rgba(17,104,191,.14),inset 0 1px 0 rgba(255,255,255,.35)}}
.modal-kf-qr{flex:none;text-align:center}
.modal-kf-qr img{width:86px;height:auto;display:block;border-radius:8px;border:1px solid rgba(0,40,144,.12);background:#fff}
.modal-kf-qr div{font-size:11.5px;color:#5a6b8c;margin-top:4px}
.modal-gzh-line{margin-top:12px;padding:9px 14px;text-align:center;font-size:13px;color:#5a6b8c;
  background:linear-gradient(135deg,#f2f7ff,#f9fbff);border:1px dashed rgba(0,40,144,.22);border-radius:10px}
.modal-gzh-line strong{color:#0a2a70}
@media (max-width:640px){
  .modal-kf-card{flex-direction:column;align-items:stretch;padding:14px 16px;gap:10px}
  .modal-kf-qr{display:none}
  .modal-kf-info strong{font-size:15.5px}
  .modal-kf-cta{display:block;width:100%;text-align:center;padding:12px 0;font-size:15.5px;letter-spacing:4px}}

/* ---------- 桌面端在线咨询窗口（唤起企微客户端 + 扫码兜底） ---------- */
.kf-chatwin{position:fixed;inset:0;z-index:1200;display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity .22s ease}
.kf-chatwin[hidden]{display:none}
.kf-chatwin.on{opacity:1}
.kf-chatwin-backdrop{position:absolute;inset:0;background:rgba(10,26,64,.55);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}
.kf-chatwin-panel{position:relative;width:min(360px,calc(100vw - 48px));display:flex;flex-direction:column;background:#fff;
  border:1px solid rgba(0,40,144,.10);border-radius:18px;overflow:hidden;box-shadow:0 30px 90px rgba(0,40,144,.38);
  transform:translateY(14px) scale(.98);transition:transform .22s ease}
.kf-chatwin.on .kf-chatwin-panel{transform:translateY(0) scale(1)}
.kf-chatwin-head{flex:none;display:flex;align-items:center;gap:10px;padding:14px 16px;
  background:linear-gradient(135deg,#012a78,#1168bf 55%,#3fb3d9);color:#fff}
.kf-chatwin-dot{flex:none;width:9px;height:9px;border-radius:50%;background:#4ade80;
  box-shadow:0 0 0 0 rgba(74,222,128,.6);animation:kf-dot-pulse 2s ease-out infinite}
@keyframes kf-dot-pulse{0%{box-shadow:0 0 0 0 rgba(74,222,128,.6)}70%{box-shadow:0 0 0 8px rgba(74,222,128,0)}100%{box-shadow:0 0 0 0 rgba(74,222,128,0)}}
.kf-chatwin-title{flex:1;min-width:0;line-height:1.35}
.kf-chatwin-title strong{display:block;font-size:15px;font-weight:700;letter-spacing:1px}
.kf-chatwin-title span{font-size:11.5px;opacity:.85}
.kf-chatwin-close{flex:none;width:32px;height:32px;border:none;cursor:pointer;background:rgba(255,255,255,.16);color:#fff;
  border-radius:50%;font-size:22px;line-height:1;display:flex;align-items:center;justify-content:center;transition:background .15s}
.kf-chatwin-close:hover{background:rgba(255,255,255,.3)}
.kf-chatwin-body{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:372px;
  padding:30px 28px 26px;background:linear-gradient(180deg,#f7fbff,#eef5ff)}
.kf-chatwin-launcher{position:absolute;left:0;bottom:0;width:1px;height:1px;opacity:0;border:0;pointer-events:none}
.kf-chatwin-connect{display:flex;flex-direction:column;align-items:center;text-align:center}
.kf-chatwin-connect[hidden]{display:none}
.kf-chatwin-spinner{width:44px;height:44px;border-radius:50%;border:4px solid rgba(17,104,191,.15);
  border-top-color:#1168bf;animation:kf-spin .9s linear infinite}
@keyframes kf-spin{to{transform:rotate(360deg)}}
.kf-chatwin-connect strong{margin-top:18px;font-size:16.5px;color:#0a1a40;letter-spacing:1px}
.kf-chatwin-connect span{margin-top:8px;font-size:13px;color:#5a6b8c;line-height:1.7}
.kf-chatwin-fallback{display:flex;flex-direction:column;align-items:center}
.kf-chatwin-fallback[hidden]{display:none}
.kf-chatwin-retry{margin-top:16px;padding:9px 18px;font-size:13px;letter-spacing:1px;cursor:pointer;color:#1168bf;
  background:#fff;border:1px solid rgba(17,104,191,.45);border-radius:999px;transition:all .18s ease}
.kf-chatwin-retry:hover{color:#fff;background:linear-gradient(135deg,#1168bf,#3fb3d9);border-color:transparent;
  transform:translateY(-1px);box-shadow:0 8px 20px rgba(17,104,191,.28)}
.kf-chatwin-qrwrap{padding:10px;background:#fff;border:1px solid rgba(0,40,144,.12);border-radius:14px;
  box-shadow:0 10px 30px rgba(0,40,144,.12);position:relative}
.kf-chatwin-qrwrap::before{content:'';position:absolute;inset:-5px;border:1px dashed rgba(17,104,191,.35);
  border-radius:18px;pointer-events:none}
.kf-chatwin-qrwrap img{width:208px;height:208px;display:block;border-radius:8px}
.kf-chatwin-tip{margin-top:18px;font-size:17px;font-weight:700;color:#0a1a40;letter-spacing:1px}
.kf-chatwin-sub{margin-top:6px;font-size:13px;color:#5a6b8c}
.kf-chatwin-sync{margin-top:12px;padding:6px 14px;font-size:12px;color:#1168bf;letter-spacing:.5px;
  background:rgba(17,104,191,.08);border:1px dashed rgba(17,104,191,.35);border-radius:999px}
.kf-chatwin-sub::after{content:'';display:block;width:44px;height:3px;border-radius:2px;margin:14px auto 0;
  background:linear-gradient(90deg,#1168bf,#3fb3d9)}