/* ==========================================================
   中国机器人产业门户 / China Robotics Industry Portal
   深色科技风主样式
   ========================================================== */

:root{
  --bg:#070b14;
  --bg-2:#0b1120;
  --bg-3:#101a2e;
  --panel:rgba(18,27,46,.72);
  --panel-solid:#121b2e;
  --line:rgba(120,160,220,.16);
  --line-strong:rgba(120,190,255,.34);

  --txt:#e8eefc;
  --txt-2:#a9b8d6;
  --txt-3:#6f80a3;

  --cyan:#22d3ee;
  --blue:#3b82f6;
  --violet:#8b5cf6;
  --pink:#f43f5e;
  --amber:#f59e0b;
  --green:#10b981;

  --grad-1:linear-gradient(120deg,#22d3ee,#3b82f6 45%,#8b5cf6);
  --grad-2:linear-gradient(120deg,#8b5cf6,#f43f5e);
  --grad-soft:linear-gradient(160deg,rgba(34,211,238,.14),rgba(139,92,246,.10) 45%,rgba(244,63,94,.06));

  --r-sm:8px; --r-md:14px; --r-lg:20px; --r-xl:26px;
  --shadow:0 18px 50px -20px rgba(0,0,0,.9);
  --shadow-glow:0 0 0 1px rgba(34,211,238,.22), 0 18px 46px -22px rgba(34,211,238,.45);
  --maxw:1280px;
  --header-h:74px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(34,211,238,.16), transparent 62%),
    radial-gradient(760px 480px at 88% 4%, rgba(139,92,246,.16), transparent 60%),
    radial-gradient(700px 520px at 50% 100%, rgba(59,130,246,.10), transparent 65%),
    var(--bg);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(120,170,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,170,255,.045) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 20%, rgba(0,0,0,.9), transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%, rgba(0,0,0,.9), transparent 78%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
::selection{background:rgba(34,211,238,.32);color:#fff}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 26px}

/* ---------- 滚动进度条 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:120;
  background:var(--grad-1);box-shadow:0 0 14px rgba(34,211,238,.8);
  transition:width .1s linear;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  background:linear-gradient(180deg,rgba(7,11,20,.92),rgba(7,11,20,.62));
  border-bottom:1px solid var(--line);
  transition:background .3s, border-color .3s;
}
.site-header.scrolled{background:rgba(7,11,20,.95);border-bottom-color:var(--line-strong)}
.header-inner{
  height:var(--header-h);display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:12px;color:#0b1120;
  background:var(--grad-1);
  box-shadow:0 8px 26px -10px rgba(34,211,238,.8);
}
.brand-mark svg{width:26px;height:26px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15.5px;letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:10.5px;color:var(--txt-3);letter-spacing:.6px;text-transform:uppercase}

.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap}
.main-nav a{
  position:relative;padding:8px 12px;border-radius:10px;font-size:13.5px;color:var(--txt-2);
  white-space:nowrap;transition:color .2s, background .2s;
}
.main-nav a:hover{color:#fff;background:rgba(120,170,255,.10)}
.main-nav a.active{color:#fff}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--grad-1);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.lang-switch{
  display:flex;padding:3px;gap:2px;border-radius:11px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.lang-switch button{
  padding:5px 11px;border-radius:8px;font-size:12.5px;font-weight:600;color:var(--txt-3);
  transition:.2s;
}
.lang-switch button.on{
  color:#06121f;background:var(--grad-1);
  box-shadow:0 4px 16px -6px rgba(34,211,238,.9);
}
.nav-toggle{display:none;width:40px;height:36px;border-radius:10px;border:1px solid var(--line);place-items:center}
.nav-toggle span{display:block;width:17px;height:2px;margin:3px auto;background:var(--txt-2);border-radius:2px}

/* ---------- 通用布局 ---------- */
.app-main{min-height:64vh;padding-bottom:20px}
.section{padding:64px 0}
.section-sm{padding:40px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px;flex-wrap:wrap}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:1.6px;
  text-transform:uppercase;color:var(--cyan);margin-bottom:12px;
}
.sec-tag::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-1)}
.sec-head h2{font-size:clamp(24px,3vw,34px)}
.sec-head p{color:var(--txt-2);margin-top:10px;max-width:640px;font-size:14.5px}
.more-link{
  display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--cyan);
  padding:9px 16px;border-radius:11px;border:1px solid var(--line-strong);transition:.22s;white-space:nowrap;
}
.more-link:hover{background:rgba(34,211,238,.12);transform:translateY(-2px)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s, box-shadow .28s;
  overflow:hidden;
}
.card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:82px 0 54px;overflow:hidden}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;padding:7px 15px 7px 9px;border-radius:999px;
  border:1px solid var(--line-strong);background:rgba(34,211,238,.08);
  font-size:12.5px;color:var(--txt-2);margin-bottom:24px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.8)}}
.hero h1{
  font-size:clamp(32px,5.2vw,60px);line-height:1.1;margin-bottom:20px;letter-spacing:-.02em;
}
.hero h1 .grad{
  background:var(--grad-1);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:16.5px;color:var(--txt-2);max-width:620px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:13px;font-weight:600;font-size:14.5px;transition:.24s;
}
.btn-primary{background:var(--grad-1);color:#05121e;box-shadow:0 14px 34px -14px rgba(34,211,238,.9)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 44px -14px rgba(34,211,238,1)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--txt);background:rgba(255,255,255,.03)}
.btn-ghost:hover{background:rgba(255,255,255,.08);transform:translateY(-3px)}

.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:660px}
.hstat{
  padding:16px 18px;border-radius:var(--r-md);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(34,211,238,.09),rgba(139,92,246,.05));
}
.hstat b{display:block;font-size:clamp(21px,2.4vw,27px);font-weight:800;letter-spacing:-.02em;
  background:var(--grad-1);-webkit-background-clip:text;background-clip:text;color:transparent}
.hstat b small{font-size:12.5px;font-weight:700;margin-left:2px;-webkit-text-fill-color:var(--cyan);color:var(--cyan)}
.hstat span{display:block;font-size:12px;color:var(--txt-3);margin-top:4px;line-height:1.45}
.hstat i{font-style:normal;font-size:11px;color:var(--green);display:block;margin-top:3px}

/* Hero 右侧：机器人视觉 */
.hero-visual{position:relative;aspect-ratio:1/1;display:grid;place-items:center}
.hero-visual .ring{
  position:absolute;border-radius:50%;border:1px solid var(--line);
}
.hero-visual .r1{inset:0;border-style:dashed;opacity:.55;animation:spin 42s linear infinite}
.hero-visual .r2{inset:12%;border-color:rgba(34,211,238,.28);animation:spin 30s linear infinite reverse}
.hero-visual .r3{inset:26%;border-color:rgba(139,92,246,.3)}
@keyframes spin{to{transform:rotate(360deg)}}
.hero-bot{width:56%;filter:drop-shadow(0 24px 60px rgba(34,211,238,.35));animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.hero-chip{
  position:absolute;padding:7px 13px;border-radius:11px;font-size:12px;font-weight:600;
  background:rgba(11,17,32,.9);border:1px solid var(--line-strong);backdrop-filter:blur(8px);
  box-shadow:0 10px 30px -12px rgba(0,0,0,.9);white-space:nowrap;
}
.chip1{top:8%;right:2%;color:var(--cyan)}
.chip2{bottom:16%;left:0;color:var(--violet)}
.chip3{bottom:2%;right:10%;color:var(--pink)}

/* ---------- 数据条 ---------- */
.kpi-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--panel)}
.kpi{padding:22px 20px;border-right:1px solid var(--line);position:relative}
.kpi:last-child{border-right:none}
.kpi b{display:block;font-size:clamp(20px,2.2vw,26px);font-weight:800;color:#fff;letter-spacing:-.02em}
.kpi b em{font-style:normal;font-size:14px;color:var(--txt-2);font-weight:600;margin-left:3px}
.kpi span{display:block;font-size:12.5px;color:var(--txt-3);margin-top:6px;line-height:1.5}
.kpi .up{color:var(--pink);font-weight:700}

/* ---------- 新闻 ---------- */
.news-list{display:grid;gap:14px}
.news-item{
  display:grid;grid-template-columns:112px 1fr auto;gap:22px;align-items:center;
  padding:20px 22px;border-radius:var(--r-md);border:1px solid var(--line);background:var(--panel);
  transition:.26s;cursor:pointer;
}
.news-item:hover{transform:translateX(6px);border-color:var(--line-strong);background:rgba(24,36,60,.8)}
.news-date{font-size:12.5px;color:var(--txt-3);font-variant-numeric:tabular-nums}
.news-date b{display:block;font-size:19px;color:var(--cyan);font-weight:800;line-height:1.2}
.news-body h3{font-size:16px;margin-bottom:7px;transition:color .2s}
.news-item:hover .news-body h3{color:var(--cyan)}
.news-body p{font-size:13.5px;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;gap:10px;margin-top:9px;font-size:11.5px;color:var(--txt-3);flex-wrap:wrap}
.tag{
  display:inline-block;padding:3px 10px;border-radius:7px;font-size:11.5px;font-weight:600;
  border:1px solid var(--line);color:var(--txt-2);background:rgba(255,255,255,.04);
}
.tag.cyan{color:var(--cyan);border-color:rgba(34,211,238,.35);background:rgba(34,211,238,.10)}
.tag.violet{color:var(--violet);border-color:rgba(139,92,246,.35);background:rgba(139,92,246,.10)}
.tag.pink{color:var(--pink);border-color:rgba(244,63,94,.35);background:rgba(244,63,94,.10)}
.tag.green{color:var(--green);border-color:rgba(16,185,129,.35);background:rgba(16,185,129,.10)}
.tag.amber{color:var(--amber);border-color:rgba(245,158,11,.35);background:rgba(245,158,11,.10)}

/* ---------- 图表 ---------- */
.chart-card{padding:24px}
.chart-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px;flex-wrap:wrap}
.chart-head h3{font-size:16.5px}
.chart-head p{font-size:12.5px;color:var(--txt-3);margin-top:5px}
.chart-box{width:100%;margin-top:14px}
.chart-box svg{width:100%;height:auto;display:block;overflow:visible}
.legend{display:flex;gap:16px;flex-wrap:wrap;margin-top:12px;font-size:12px;color:var(--txt-2)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.src-note{margin-top:12px;font-size:11.5px;color:var(--txt-3);border-top:1px dashed var(--line);padding-top:10px}

/* ---------- 产业链 ---------- */
.chain-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.chain-step{position:relative;padding:24px 22px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--grad-soft)}
.chain-step .idx{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:14px;
  background:var(--grad-1);color:#05121e;margin-bottom:16px;
}
.chain-step h3{font-size:16.5px;margin-bottom:6px}
.chain-step .en{font-size:11.5px;color:var(--txt-3);letter-spacing:.5px;margin-bottom:14px;text-transform:uppercase}
.chain-step p{font-size:13.5px;color:var(--txt-2);margin-bottom:14px}
.chain-step ul li{
  font-size:13px;color:var(--txt-2);padding:7px 0 7px 18px;position:relative;border-top:1px dashed var(--line);
}
.chain-step ul li:first-child{border-top:none}
.chain-step ul li::before{content:"";position:absolute;left:2px;top:15px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.chain-arrow{
  position:absolute;right:-12px;top:50%;transform:translateY(-50%);z-index:2;
  width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:12px;
  background:var(--bg-2);border:1px solid var(--line-strong);color:var(--cyan);
}

/* ---------- 企业名录 ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px;align-items:center}
.filters .fl{
  padding:8px 16px;border-radius:11px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13px;color:var(--txt-2);transition:.2s;
}
.filters .fl:hover{color:#fff;border-color:var(--line-strong)}
.filters .fl.on{background:var(--grad-1);color:#05121e;font-weight:700;border-color:transparent}
.search-box{position:relative;margin-left:auto}
.search-box input{
  width:250px;padding:10px 16px 10px 38px;border-radius:11px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--txt);font-size:13.5px;outline:none;transition:.2s;
}
.search-box input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.14)}
.search-box input::placeholder{color:var(--txt-3)}
.search-box::before{content:"⌕";position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--txt-3);font-size:17px}

.co-card{padding:20px}
.co-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:12px}
.co-name{font-size:16.5px;font-weight:700}
.co-en{font-size:11.5px;color:var(--txt-3);letter-spacing:.4px;margin-top:2px}
.co-code{
  flex-shrink:0;padding:4px 9px;border-radius:8px;font-size:11px;font-weight:700;font-variant-numeric:tabular-nums;
  background:rgba(34,211,238,.12);color:var(--cyan);border:1px solid rgba(34,211,238,.28);
}
.co-code.unlisted{background:rgba(255,255,255,.05);color:var(--txt-3);border-color:var(--line)}
.co-desc{font-size:13.5px;color:var(--txt-2);margin-bottom:14px;min-height:44px}
.co-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:13px;border-top:1px dashed var(--line);flex-wrap:wrap}
.co-loc{font-size:12px;color:var(--txt-3)}
.co-links{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- 政策 / 时间轴 ---------- */
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--cyan),var(--violet),transparent)}
.tl-item{position:relative;padding:0 0 26px 0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--bg);border:2px solid var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.14);
}
.tl-item.hl::before{border-color:var(--pink);box-shadow:0 0 0 4px rgba(244,63,94,.16)}
.tl-date{font-size:12px;color:var(--cyan);font-weight:700;letter-spacing:.5px;font-variant-numeric:tabular-nums}
.tl-item.hl .tl-date{color:var(--pink)}
.tl-item h3{font-size:16px;margin:7px 0 8px}
.tl-item p{font-size:13.5px;color:var(--txt-2)}
.tl-meta{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}

/* ---------- 展会 ---------- */
.ev-card{display:grid;grid-template-columns:96px 1fr;gap:20px;align-items:center;padding:20px}
.ev-date{
  text-align:center;padding:12px 8px;border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(34,211,238,.14),rgba(139,92,246,.08));
  border:1px solid var(--line);
}
.ev-date b{display:block;font-size:24px;font-weight:800;color:#fff;line-height:1.1}
.ev-date span{display:block;font-size:11.5px;color:var(--txt-3);margin-top:2px}
.ev-date em{display:block;font-style:normal;font-size:10.5px;color:var(--cyan);margin-top:5px;font-weight:700}
.ev-body h3{font-size:16px;margin-bottom:6px}
.ev-body p{font-size:13px;color:var(--txt-2);margin-bottom:9px}
.ev-body .ev-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--txt-3)}
.ev-body .ev-meta b{color:var(--txt-2);font-weight:600}

/* ---------- 报告 ---------- */
.rep-card{display:flex;flex-direction:column;gap:14px}
.rep-ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:20px;
  background:var(--grad-soft);border:1px solid var(--line);
}
.rep-card h3{font-size:16px}
.rep-card p{font-size:13px;color:var(--txt-2)}
.rep-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:13px;border-top:1px dashed var(--line);font-size:12px;color:var(--txt-3)}

/* ---------- 关于 ---------- */
.about-hero{padding:20px 0 10px}
.about-hero h1{font-size:clamp(28px,4vw,44px);margin-bottom:16px}
.about-hero p{color:var(--txt-2);font-size:16px;max-width:760px}
.prose{color:var(--txt-2);font-size:14.5px}
.prose h3{color:var(--txt);font-size:18px;margin:26px 0 12px}
.prose p{margin-bottom:14px}
.prose ul{margin:0 0 14px}
.prose ul li{padding-left:20px;position:relative;margin-bottom:8px}
.prose ul li::before{content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* ---------- 页面头 ---------- */
.page-head{padding:52px 0 30px;position:relative}
.page-head h1{font-size:clamp(28px,4.2vw,46px);margin-bottom:14px}
.page-head p{color:var(--txt-2);font-size:16px;max-width:720px}
.crumb{font-size:12.5px;color:var(--txt-3);margin-bottom:16px;display:flex;gap:8px;align-items:center}
.crumb a{color:var(--txt-3)}
.crumb a:hover{color:var(--cyan)}

/* ---------- 空状态 ---------- */
.empty{padding:56px;text-align:center;color:var(--txt-3);border:1px dashed var(--line);border-radius:var(--r-lg)}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:60px;border-top:1px solid var(--line);background:rgba(7,11,20,.7);padding:52px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr 1fr;gap:32px}
.footer-brand strong{font-size:16px}
.footer-brand p{font-size:13px;color:var(--txt-3);margin-top:12px;max-width:340px}
.footer-col h4{font-size:13px;letter-spacing:1.4px;text-transform:uppercase;color:var(--txt);margin-bottom:16px}
.footer-col ul li{margin-bottom:9px}
.footer-col ul li a,.footer-col ul li{font-size:13.5px;color:var(--txt-3);transition:color .2s}
.footer-col ul li a:hover{color:var(--cyan)}
.visit-count{color:var(--cyan)!important;font-weight:700;font-variant-numeric:tabular-nums}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--txt-3);
}
.footer-updated{color:var(--txt-3)}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:26px;width:44px;height:44px;border-radius:14px;z-index:90;
  background:var(--panel-solid);border:1px solid var(--line-strong);color:var(--cyan);
  font-size:18px;display:grid;place-items:center;opacity:0;pointer-events:none;transition:.3s;
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:rgba(34,211,238,.16);transform:translateY(-3px)}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease, transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 分页/加载更多 ---------- */
.load-more{display:flex;justify-content:center;margin-top:28px}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .hero-inner{grid-template-columns:1fr .8fr}
  .kpi-strip{grid-template-columns:repeat(3,1fr)}
  .kpi{border-bottom:1px solid var(--line)}
  .chain-flow{grid-template-columns:repeat(2,1fr)}
  .chain-arrow{display:none}
  .footer-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:980px){
  .main-nav{
    position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;align-items:stretch;
    background:rgba(7,11,20,.98);border-bottom:1px solid var(--line);padding:14px 20px;gap:2px;
    display:none;backdrop-filter:blur(16px);
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:11px 14px;font-size:14px}
  .main-nav a.active::after{display:none}
  .nav-toggle{display:grid}
  .header-actions{margin-left:auto}
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero-visual{max-width:420px;margin:0 auto;width:100%}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .wrap{padding:0 18px}
  .hero{padding:56px 0 40px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .kpi-strip{grid-template-columns:repeat(2,1fr)}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .chain-flow{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:10px}
  .news-date{display:flex;gap:8px;align-items:baseline}
  .news-date b{font-size:16px}
  .ev-card{grid-template-columns:1fr;gap:14px}
  .ev-date{display:flex;gap:12px;align-items:baseline;justify-content:center;padding:10px}
  .ev-date b{font-size:20px}
  .search-box{margin-left:0;width:100%}
  .search-box input{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .section{padding:48px 0}
}

/* 减少动效偏好 */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}