/* ==========================================================================
   倍得曼 · 官网样式表
   深色 Hero + 浅色内容区；无外部依赖，图标全部内联 SVG
   ========================================================================== */

:root{
  --ink:      #0A1424;
  --ink-2:    #10203A;
  --ink-3:    #172B49;
  --brand:    #2B6BFF;
  --brand-d:  #1B4FD8;
  --brand-l:  #EBF1FF;
  --teal:     #00C2A8;
  --gold:     #F0A73A;
  --bg:       #F6F8FC;
  --card:     #FFFFFF;
  --line:     #E6EAF2;
  --line-d:   #D8DEEA;
  --txt:      #16202E;
  --sub:      #5A6B84;
  --sub-2:    #8A98AE;
  --radius:   14px;
  --radius-l: 20px;
  --shadow:   0 1px 2px rgba(16,32,58,.04), 0 8px 24px rgba(16,32,58,.06);
  --shadow-h: 0 4px 8px rgba(16,32,58,.06), 0 20px 48px rgba(16,32,58,.12);
  --maxw:     1200px;
  --maxw-wide: 1320px;

  /* 字体族：西文优先用系统 UI 字体（渲染更锐利），中文再逐级回退到各平台最优中文字体 */
  --font:     -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
              "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC",
              "Noto Sans CJK SC", "Hiragino Sans GB", "Microsoft YaHei UI",
              "Microsoft YaHei", Arial, sans-serif;

  /* ---------- 流体字号体系 ----------
     写法是 clamp(下限, 视口插值, 上限)：小屏取到下限，大屏取到上限，中间平滑过渡。
     原则：只有大标题需要明显缩放（它占好几行，小屏不缩会爆版）；
           正文只做 1~2px 的微调（正文跟着视口大幅缩放反而不好读）。 */
  --fs-display: clamp(28px, 2.2vw + 21px, 50px);      /* 首屏主标题 */
  --fs-h1:      clamp(23px, 1.5vw + 18.2px, 36px);    /* 文章页大标题 */
  --fs-h2:      clamp(22px, 1.2vw + 18px, 34px);      /* 区块标题 */
  --fs-h3:      clamp(17.5px, .5vw + 15.9px, 22px);   /* 卡片标题 */
  --fs-h4:      clamp(15.5px, .3vw + 14.5px, 17.5px); /* 小标题 */
  --fs-lead:    clamp(15.5px, .4vw + 14.2px, 17.5px); /* 导语 / 摘要 */
  --fs-body:    clamp(15px, .3vw + 14px, 16.5px);     /* 常规正文 */
  --fs-sm:      clamp(13.8px, .22vw + 13.1px, 15px);  /* 次要正文 */
  --fs-xs:      clamp(12.4px, .16vw + 11.9px, 13.4px);/* 标注文字 */
  --fs-tiny:    clamp(11.4px, .1vw + 11.1px, 12.4px); /* 极小标签 */
  --fs-num-xl:  clamp(34px, 1.8vw + 28.2px, 44px);    /* 产品线大编号 */
  --fs-num-lg:  clamp(25px, 1.5vw + 20.2px, 34px);    /* 首屏大数字 */
  --fs-num-sm:  clamp(23px, 1.1vw + 19.5px, 30px);    /* 关于页数字 */
  /* 文章阅读区字号整体大一档：长文在小屏上更需要字大透气 */
  --fs-read:    clamp(16px, .42vw + 14.7px, 18.5px);
  --fs-read-sm: clamp(15px, .35vw + 13.9px, 17px);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  font-size:var(--fs-body);
  color:var(--txt);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:0;background:none}

/* 标题自动均衡换行（避免末行只剩一个字）；正文避免孤字。
   浏览器不支持时自动忽略，不影响排版。 */
h1,h2,h3,h4{text-wrap:balance}
p,li{text-wrap:pretty}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 通用：滚动淡入 ---------- */
.reveal{opacity:0;transform:translateY(22px);
  transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ==========================================================================
   导航
   ========================================================================== */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(10,20,36,.82);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:background .3s;
}
.nav-in{display:flex;align-items:center;gap:34px;height:68px}

.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,#3D7BFF 0%,#00C2A8 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 14px rgba(43,107,255,.42);
}
.logo-mark svg{width:20px;height:20px}
.logo-txt b{display:block;font-size:var(--fs-h4);font-weight:700;color:#fff;letter-spacing:.5px;line-height:1.25}
.logo-txt span{display:block;font-size:10.5px;color:rgba(255,255,255,.42);
  letter-spacing:1.9px;text-transform:uppercase;line-height:1}

.nav-links{display:flex;gap:6px;margin-left:auto}
.nav-links a{
  font-size:var(--fs-sm);color:rgba(255,255,255,.72);
  padding:7px 14px;border-radius:8px;transition:.2s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-cta{
  font-size:var(--fs-sm);font-weight:600;color:#fff;white-space:nowrap;
  padding:9px 20px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-d) 100%);
  box-shadow:0 4px 16px rgba(43,107,255,.36);
  transition:.22s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 7px 22px rgba(43,107,255,.5)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:9px;
  align-items:center;justify-content:center;margin-left:auto}
.nav-toggle svg{width:22px;height:22px;stroke:#fff;stroke-width:2;fill:none}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(1100px 520px at 78% -8%, rgba(43,107,255,.34) 0%, transparent 62%),
    radial-gradient(760px 460px at 6% 108%, rgba(0,194,168,.22) 0%, transparent 60%),
    linear-gradient(168deg,#0A1424 0%,#10203A 52%,#0C1A30 100%);
  padding:82px 0 96px;
}
/* 网格底纹 */
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 88% 76% at 50% 36%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 88% 76% at 50% 36%,#000 20%,transparent 78%);
}
.hero-in{position:relative;z-index:2;
  display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}

.badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:var(--fs-xs);color:rgba(255,255,255,.84);letter-spacing:.3px;
  padding:6px 14px 6px 10px;border-radius:100px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 0 3px rgba(0,194,168,.22);flex-shrink:0}

.hero h1{
  font-size:var(--fs-display);line-height:1.2;
  font-weight:800;letter-spacing:-.5px;margin:22px 0 20px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,#5C93FF 0%,#00C2A8 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{
  font-size:var(--fs-lead);line-height:1.8;color:rgba(255,255,255,.7);
  max-width:560px;
}
.hero-btns{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-size:var(--fs-body);font-weight:600;padding:13px 26px;border-radius:11px;
  transition:.22s;white-space:nowrap;
}
.btn svg{width:16px;height:16px;stroke-width:2.2;fill:none;stroke:currentColor}
.btn-pri{color:#fff;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-d) 100%);
  box-shadow:0 6px 22px rgba(43,107,255,.4)}
.btn-pri:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(43,107,255,.55)}
.btn-ghost{color:rgba(255,255,255,.9);background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.18)}
.btn-ghost:hover{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.3)}

/* Hero 右侧：终端示意 */
.hero-art{position:relative;display:flex;justify-content:center;align-items:center}
.art-card{
  width:100%;max-width:392px;border-radius:var(--radius-l);
  background:linear-gradient(158deg,rgba(255,255,255,.11) 0%,rgba(255,255,255,.035) 100%);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 26px 70px rgba(0,0,0,.42);
  padding:22px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.art-head{display:flex;align-items:center;justify-content:space-between;
  padding-bottom:15px;border-bottom:1px solid rgba(255,255,255,.1)}
.art-head .t{font-size:var(--fs-xs);color:rgba(255,255,255,.62);letter-spacing:.4px}
.art-live{display:flex;align-items:center;gap:6px;font-size:var(--fs-tiny);color:var(--teal)}
.art-live i{width:5px;height:5px;border-radius:50%;background:var(--teal);
  animation:pulse 1.9s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}

.art-row{display:flex;align-items:center;gap:12px;padding:13px 0;
  border-bottom:1px solid rgba(255,255,255,.06)}
.art-row:last-child{border-bottom:0}
.art-ico{width:34px;height:34px;border-radius:9px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.1)}
.art-ico svg{width:17px;height:17px;stroke-width:1.9;fill:none;stroke:#8FB4FF}
.art-txt{flex:1;min-width:0}
.art-txt b{display:block;font-size:var(--fs-sm);font-weight:600;color:rgba(255,255,255,.94)}
.art-txt span{display:block;font-size:var(--fs-tiny);color:rgba(255,255,255,.42);margin-top:1px}
.art-val{font-size:var(--fs-xs);font-weight:700;color:var(--teal);white-space:nowrap;
  font-variant-numeric:tabular-nums}
.art-bar{height:4px;border-radius:100px;background:rgba(255,255,255,.1);
  margin-top:16px;overflow:hidden}
.art-bar i{display:block;height:100%;border-radius:100px;
  background:linear-gradient(90deg,var(--brand),var(--teal));
  animation:sweep 3.4s ease-in-out infinite}
@keyframes sweep{0%{width:22%}50%{width:88%}100%{width:22%}}
.art-foot{display:flex;justify-content:space-between;font-size:var(--fs-tiny);
  color:rgba(255,255,255,.38);margin-top:9px;letter-spacing:.3px}

/* Hero 底部指标 */
.hero-metrics{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:74px;border-radius:var(--radius);
  background:rgba(255,255,255,.09);overflow:hidden;
}
.metric{background:rgba(10,20,36,.62);padding:24px 26px}
.metric b{display:block;font-size:var(--fs-num-lg);font-weight:800;
  color:#fff;letter-spacing:-.5px;font-variant-numeric:tabular-nums;line-height:1.2}
.metric b i{font-style:normal;font-size:.56em;font-weight:700;
  color:var(--teal);margin-left:3px;letter-spacing:0}
.metric span{display:block;font-size:var(--fs-xs);color:rgba(255,255,255,.48);margin-top:6px}

/* ==========================================================================
   通用区块
   ========================================================================== */
.sec{padding:88px 0}
.sec-grey{background:#fff}
.sec-head{max-width:680px;margin-bottom:50px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:var(--fs-xs);font-weight:700;
  letter-spacing:1.6px;color:var(--brand);text-transform:uppercase;margin-bottom:13px;
}
.sec-head h2{
  font-size:var(--fs-h2);font-weight:800;
  letter-spacing:-.4px;line-height:1.32;color:var(--ink);
}
.sec-head p{font-size:var(--fs-lead);color:var(--sub);margin-top:15px;line-height:1.82}

/* ---------- 核心能力卡片 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;position:relative;overflow:hidden;
  transition:transform .28s cubic-bezier(.22,.61,.36,1),box-shadow .28s,border-color .28s;
}
.cap::after{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--teal));
  transition:width .38s cubic-bezier(.22,.61,.36,1);
}
.cap:hover{transform:translateY(-5px);box-shadow:var(--shadow-h);border-color:transparent}
.cap:hover::after{width:100%}
.cap-ico{
  width:48px;height:48px;border-radius:13px;margin-bottom:19px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand-l) 0%,#F4F9FF 100%);
  border:1px solid #DCE7FF;
}
.cap-ico svg{width:23px;height:23px;stroke:var(--brand);stroke-width:1.85;fill:none;
  stroke-linecap:round;stroke-linejoin:round}
.cap h3{font-size:var(--fs-h3);font-weight:700;color:var(--ink);margin-bottom:10px;letter-spacing:-.2px}
.cap p{font-size:var(--fs-sm);color:var(--sub);line-height:1.8}
.cap ul{list-style:none;margin-top:15px;padding-top:15px;border-top:1px dashed var(--line-d)}
.cap li{font-size:var(--fs-sm);color:var(--sub);padding-left:18px;position:relative;
  line-height:1.9}
.cap li::before{content:"";position:absolute;left:2px;top:11px;
  width:5px;height:5px;border-radius:50%;background:var(--teal)}

/* ---------- 解决方案 ---------- */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sol{
  border-radius:var(--radius-l);padding:34px 30px;position:relative;overflow:hidden;
  background:linear-gradient(160deg,#0E1E36 0%,#132A4A 100%);
  color:#fff;border:1px solid rgba(255,255,255,.09);
  transition:transform .28s cubic-bezier(.22,.61,.36,1),box-shadow .28s;
}
.sol:nth-child(2){background:linear-gradient(160deg,#12324F 0%,#0F3E48 100%)}
.sol:nth-child(3){background:linear-gradient(160deg,#1B2A4E 0%,#2A2F5E 100%)}
.sol:hover{transform:translateY(-5px);box-shadow:0 24px 56px rgba(10,20,36,.3)}
.sol-ico{width:44px;height:44px;border-radius:12px;margin-bottom:20px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.14)}
.sol-ico svg{width:22px;height:22px;stroke:#7FD9CB;stroke-width:1.85;fill:none;
  stroke-linecap:round;stroke-linejoin:round}
.sol h3{font-size:var(--fs-h3);font-weight:700;margin-bottom:11px;letter-spacing:-.2px}
.sol p{font-size:var(--fs-sm);color:rgba(255,255,255,.66);line-height:1.8}
.sol .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;padding-top:19px;
  border-top:1px solid rgba(255,255,255,.1)}
.sol .tags span{font-size:var(--fs-xs);color:rgba(255,255,255,.76);
  padding:4px 11px;border-radius:6px;background:rgba(255,255,255,.09)}

/* ---------- 业务链路 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;margin-top:8px}
.step{position:relative;padding:0 20px}
.step:not(:last-child)::before{
  content:"";position:absolute;left:calc(50% + 32px);right:-50%;top:24px;height:2px;
  background:linear-gradient(90deg,var(--line-d) 0%,var(--line) 100%);
}
.step-num{
  width:48px;height:48px;border-radius:14px;position:relative;z-index:2;
  display:flex;align-items:center;justify-content:center;
  font-size:var(--fs-h4);font-weight:800;color:var(--brand);
  background:#fff;border:1.5px solid #DCE7FF;
  box-shadow:0 6px 18px rgba(43,107,255,.13);margin:0 auto 20px;
  font-variant-numeric:tabular-nums;
}
.step.on .step-num{background:linear-gradient(135deg,var(--brand),var(--brand-d));
  color:#fff;border-color:transparent;box-shadow:0 8px 24px rgba(43,107,255,.36)}
.step h4{font-size:var(--fs-h4);font-weight:700;color:var(--ink);text-align:center;margin-bottom:9px}
.step p{font-size:var(--fs-sm);color:var(--sub);text-align:center;line-height:1.78}

/* ---------- 行业动态 ---------- */
.news-top{display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:40px;flex-wrap:wrap}
.news-meta{font-size:var(--fs-xs);color:var(--sub-2);display:flex;align-items:center;gap:7px}
.news-meta i{width:6px;height:6px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 0 3px rgba(0,194,168,.16)}

.feat{
  display:grid;grid-template-columns:1.35fr 1fr;gap:0;border-radius:var(--radius-l);
  overflow:hidden;background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow);transition:box-shadow .3s,transform .3s;
}
.feat:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.feat-body{padding:38px 40px;display:flex;flex-direction:column;justify-content:center}
.feat-cover{
  background:linear-gradient(150deg,#12294A 0%,#0C1B31 62%,#0F3242 100%);
  position:relative;min-height:270px;display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.feat-cover::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:34px 34px;
}
.feat-cover svg{position:relative;width:150px;height:150px;opacity:.92}

.tag{
  display:inline-block;font-size:var(--fs-tiny);font-weight:700;letter-spacing:.4px;
  color:var(--brand);background:var(--brand-l);
  padding:4px 11px;border-radius:6px;margin-bottom:15px;
}
.feat h3{font-size:var(--fs-h3);font-weight:800;line-height:1.45;
  color:var(--ink);letter-spacing:-.3px;transition:color .2s}
.feat:hover h3{color:var(--brand)}
.feat .sum{font-size:var(--fs-sm);color:var(--sub);line-height:1.85;margin-top:14px}
.feat .meta{display:flex;align-items:center;gap:16px;margin-top:22px;
  font-size:var(--fs-xs);color:var(--sub-2)}
.feat .meta .more{color:var(--brand);font-weight:600;display:inline-flex;
  align-items:center;gap:5px;margin-left:auto}
.feat .meta .more svg{width:13px;height:13px;stroke:currentColor;stroke-width:2.4;fill:none;
  transition:transform .24s}
.feat:hover .meta .more svg{transform:translateX(4px)}

.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:22px}
.ncard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:25px 24px;display:flex;flex-direction:column;
  transition:transform .26s cubic-bezier(.22,.61,.36,1),box-shadow .26s,border-color .26s;
}
.ncard:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:#D6E2FF}
.ncard .tag{margin-bottom:12px}
.ncard h4{font-size:var(--fs-h4);font-weight:700;line-height:1.55;color:var(--ink);
  transition:color .2s;letter-spacing:-.1px}
.ncard:hover h4{color:var(--brand)}
.ncard p{font-size:var(--fs-sm);color:var(--sub);line-height:1.78;margin-top:10px;flex:1}
.ncard .meta{display:flex;align-items:center;gap:12px;margin-top:18px;
  padding-top:15px;border-top:1px dashed var(--line-d);
  font-size:var(--fs-xs);color:var(--sub-2)}

.news-cta{text-align:center;margin-top:44px}
.btn-out{
  display:inline-flex;align-items:center;gap:9px;
  font-size:var(--fs-sm);font-weight:600;color:var(--brand);
  padding:12px 26px;border-radius:11px;
  background:#fff;border:1.5px solid #D6E2FF;transition:.22s;
}
.btn-out:hover{background:var(--brand-l);border-color:var(--brand);transform:translateY(-2px)}
.btn-out svg{width:15px;height:15px;stroke:currentColor;stroke-width:2.4;fill:none}

/* ---------- 关于 ---------- */
.about-in{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.astat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;transition:transform .26s,box-shadow .26s;
}
.astat:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.astat b{display:block;font-size:var(--fs-num-sm);font-weight:800;color:var(--ink);
  letter-spacing:-.6px;line-height:1.15;font-variant-numeric:tabular-nums}
.astat b i{font-style:normal;font-size:.52em;color:var(--brand);margin-left:2px}
.astat span{display:block;font-size:var(--fs-xs);color:var(--sub);margin-top:7px}

/* ---------- 联系 / 页脚 ---------- */
.contact{
  background:linear-gradient(140deg,#0A1424 0%,#12294A 55%,#0F3242 100%);
  color:#fff;padding:74px 0;position:relative;overflow:hidden;
}
.contact::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(720px 340px at 82% 12%,rgba(0,194,168,.2) 0%,transparent 66%);
  pointer-events:none;
}
.contact-in{position:relative;z-index:2;display:flex;
  align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.contact h2{font-size:var(--fs-h2);font-weight:800;
  letter-spacing:-.4px;line-height:1.36}
.contact p{font-size:var(--fs-body);color:rgba(255,255,255,.62);margin-top:12px;max-width:560px;line-height:1.82}

.footer{background:#070F1C;color:rgba(255,255,255,.5);padding:52px 0 30px;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{font-size:var(--fs-sm);line-height:1.85;color:rgba(255,255,255,.44);max-width:290px}
.foot-col h5{font-size:var(--fs-sm);font-weight:700;color:rgba(255,255,255,.9);margin-bottom:15px}
.foot-col a{display:block;font-size:var(--fs-sm);color:rgba(255,255,255,.5);
  padding:5px 0;transition:.2s}
.foot-col a:hover{color:var(--teal)}
.foot-bot{margin-top:44px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:var(--fs-xs);color:rgba(255,255,255,.34)}

/* 页脚右侧：电话 + 城市 + ICP 备案号 */
.foot-legal{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.foot-legal a{
  color:rgba(255,255,255,.42);transition:color .2s;
  border-bottom:1px solid transparent;
}
.foot-legal a:hover{color:var(--teal);border-bottom-color:rgba(0,194,168,.4)}

/* ---------- 联系区：电话 + 微信二维码 ---------- */
.contact-way{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap}
.cway{
  display:inline-flex;align-items:center;gap:13px;
  padding:13px 22px 13px 16px;border-radius:13px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  transition:.22s;
}
.cway:hover{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.3);
  transform:translateY(-2px)}
.cway-ico{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-d) 100%);
  box-shadow:0 4px 14px rgba(43,107,255,.35);
}
.cway-ico svg{width:19px;height:19px;stroke:#fff;stroke-width:1.9;fill:none;
  stroke-linecap:round;stroke-linejoin:round}
.cway-txt b{display:block;font-size:var(--fs-h4);font-weight:700;color:#fff;
  letter-spacing:.4px;line-height:1.3;font-variant-numeric:tabular-nums}
.cway-txt i{display:block;font-size:var(--fs-xs);color:rgba(255,255,255,.5);font-style:normal;margin-top:2px}

.contact-qr{
  flex-shrink:0;background:#fff;border-radius:16px;padding:13px 13px 10px;
  box-shadow:0 18px 48px rgba(0,0,0,.34);
}
.contact-qr img{width:170px;height:170px;border-radius:9px;display:block}
.contact-qr span{display:block;margin-top:9px;font-size:12.5px;
  color:#5A6B84;font-size:var(--fs-xs);font-weight:600;letter-spacing:.2px;text-align:center}

/* ==========================================================================
   文章详情页
   ========================================================================== */
.art-top{
  background:linear-gradient(168deg,#0A1424 0%,#10203A 100%);
  color:#fff;padding:56px 0 60px;position:relative;overflow:hidden;
}
.art-top::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 340px at 76% -10%,rgba(43,107,255,.3) 0%,transparent 62%);
}
.art-top-in{position:relative;z-index:2;max-width:800px;margin:0 auto;padding:0 24px}
.crumb{font-size:var(--fs-xs);color:rgba(255,255,255,.48);margin-bottom:24px}
.crumb a:hover{color:#fff}
.crumb span{margin:0 8px;opacity:.5}
.art-top h1{font-size:var(--fs-h1);font-weight:800;line-height:1.4;
  letter-spacing:-.4px;margin-bottom:20px}
.art-top .meta{display:flex;align-items:center;gap:18px;font-size:var(--fs-xs);
  color:rgba(255,255,255,.55);flex-wrap:wrap}
.art-top .meta .tag{background:rgba(255,255,255,.1);color:rgba(255,255,255,.9);margin:0}
/* 深色标题区里的产品线标签：白字 + 彩色圆点，保证可读 */
.art-top .meta .lchip{
  background:rgba(255,255,255,.13);
  border-color:rgba(255,255,255,.22);
  color:#fff;
}
.art-top .meta .lchip::before{background:var(--lc,#2B6BFF)}

.art-main{max-width:800px;margin:-34px auto 0;padding:0 24px 80px;
  position:relative;z-index:3}
.art-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:52px 56px;box-shadow:0 12px 44px rgba(16,32,58,.09);
}
.art-body h2{
  font-size:var(--fs-h3);font-weight:800;color:var(--ink);letter-spacing:-.2px;
  margin:40px 0 16px;padding-left:16px;border-left:4px solid var(--brand);
  line-height:1.5;
}
.art-body h2:first-child{margin-top:0}
.art-body p{font-size:var(--fs-read);line-height:2.05;color:#2A3648;margin-bottom:19px}
.art-body ul{margin:0 0 20px 0;padding-left:0;list-style:none}
.art-body li{font-size:var(--fs-read-sm);line-height:1.95;color:#2A3648;
  padding-left:24px;position:relative;margin-bottom:10px}
.art-body li::before{content:"";position:absolute;left:6px;top:13px;
  width:6px;height:6px;border-radius:2px;background:var(--brand)}
.art-body blockquote{
  margin:26px 0;padding:20px 26px;border-radius:12px;
  background:linear-gradient(120deg,#F3F7FF 0%,#F0FBF9 100%);
  border-left:4px solid var(--teal);
  font-size:var(--fs-read-sm);line-height:1.9;color:#1F2C40;
}
.art-body blockquote p:last-child{margin-bottom:0}
.art-body strong{font-weight:700;color:var(--ink)}
.art-body img{border-radius:12px;margin:24px 0}

.art-foot{
  margin-top:36px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.art-tags{display:flex;gap:8px;flex-wrap:wrap}
.art-tags span{font-size:var(--fs-xs);color:var(--sub);
  padding:5px 12px;border-radius:7px;background:var(--bg);border:1px solid var(--line)}
.art-back{font-size:var(--fs-sm);font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:7px}
.art-back svg{width:15px;height:15px;stroke:currentColor;stroke-width:2.4;fill:none;
  transition:transform .22s}
.art-back:hover svg{transform:translateX(-4px)}

.art-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:28px}
.anav{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;transition:.24s;
}
.anav:hover{border-color:#D6E2FF;box-shadow:var(--shadow);transform:translateY(-2px)}
.anav span{display:block;font-size:var(--fs-xs);color:var(--sub-2);margin-bottom:7px}
.anav b{display:block;font-size:var(--fs-sm);font-weight:600;color:var(--ink);
  line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden}
.anav.right{text-align:right}

.loading{text-align:center;padding:80px 0;color:var(--sub-2);font-size:14.5px}
.empty{text-align:center;padding:70px 0;color:var(--sub-2);font-size:14.5px}

/* ==========================================================================
   四条产品线
   ========================================================================== */
.line-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

.line-card{
  --lc:#2B6BFF; --lcbg:#EEF4FF; --lcl:#D6E2FF;
  position:relative;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:34px 32px 30px;
  transition:transform .3s cubic-bezier(.22,.61,.36,1),box-shadow .3s,border-color .3s;
}
.line-card::before{
  content:"";position:absolute;left:0;top:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--lc) 0%,transparent 92%);
  opacity:.9;
}
.line-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h);border-color:var(--lcl)}

.lc-blue  {--lc:#2B6BFF; --lcbg:#EEF4FF; --lcl:#D6E2FF}
.lc-teal  {--lc:#00A88F; --lcbg:#E9FAF6; --lcl:#C4EBE2}
.lc-gold  {--lc:#D98A18; --lcbg:#FFF6E8; --lcl:#F3E0BC}
.lc-coral {--lc:#F0603C; --lcbg:#FFF1EC; --lcl:#FBD8CD}

.lc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.lc-num{
  font-size:var(--fs-num-xl);font-weight:800;line-height:1;
  color:var(--lc);opacity:.16;letter-spacing:-2px;font-variant-numeric:tabular-nums;
}
.lc-ico{
  width:50px;height:50px;border-radius:14px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--lcbg);border:1px solid var(--lcl);
}
.lc-ico svg{width:24px;height:24px;stroke:var(--lc);stroke-width:1.85;fill:none;
  stroke-linecap:round;stroke-linejoin:round}

.line-card h3{font-size:var(--fs-h3);font-weight:800;color:var(--ink);
  letter-spacing:-.3px;margin-bottom:7px}
.lc-sub{font-size:var(--fs-sm);font-weight:600;color:var(--lc);margin-bottom:14px}
.lc-desc{font-size:var(--fs-sm);color:var(--sub);line-height:1.82}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chips span{
  font-size:var(--fs-xs);font-weight:600;color:var(--lc);
  padding:5px 12px;border-radius:8px;
  background:var(--lcbg);border:1px solid var(--lcl);
}
.chips.inline{margin-top:0;display:inline-flex;vertical-align:middle}

.lc-note{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:14px;padding-top:14px;border-top:1px dashed var(--lcl);
}
.lc-note > b{font-size:var(--fs-xs);font-weight:700;color:var(--ink);letter-spacing:.2px}

.lc-list{list-style:none;margin-top:18px;padding-top:17px;border-top:1px solid var(--line)}
.lc-list li{font-size:var(--fs-sm);color:var(--sub);line-height:1.85;
  padding-left:19px;position:relative}
.lc-list li::before{
  content:"";position:absolute;left:2px;top:9px;
  width:6px;height:6px;border-radius:2px;background:var(--lc);opacity:.75;
}

/* ==========================================================================
   分线 Tab + 产品线标签
   ========================================================================== */
.tabs{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:26px}
.tab{
  font-size:var(--fs-sm);font-weight:600;color:var(--sub);
  padding:9px 20px;border-radius:100px;
  background:#fff;border:1.5px solid var(--line);
  transition:.22s;white-space:nowrap;
}
.tab:hover{color:var(--brand);border-color:#D6E2FF;background:var(--brand-l)}
.tab.on{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-d) 100%);
  box-shadow:0 5px 16px rgba(43,107,255,.32);
}

.lchip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:var(--fs-tiny);font-weight:700;letter-spacing:.2px;
  color:var(--lc,#2B6BFF);
  padding:4px 11px 4px 9px;border-radius:6px;
  background:var(--lcbg,#EEF4FF);
  border:1px solid var(--lbd,#D6E2FF);
}
.lchip::before{
  content:"";width:6px;height:6px;border-radius:2px;
  background:var(--lc,#2B6BFF);flex-shrink:0;
}
.feat-tags{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:15px}
.feat-tags .tag{margin-bottom:0}

/* 特色卡左侧产品线色条 */
.feat{position:relative}
.feat::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;z-index:3;
  background:linear-gradient(180deg,var(--lc,#2B6BFF) 0%,transparent 100%);
}

/* ==========================================================================
   Hero 通道图标配色
   ========================================================================== */
.ico-blue  svg{stroke:#8FB4FF}
.ico-teal  svg{stroke:#7FD9CB}
.ico-gold  svg{stroke:#F3C078}
.ico-coral svg{stroke:#FFA88E}

/* 四列能力网格 */
.cap-grid-4{grid-template-columns:repeat(4,1fr)}

/* 四色指标强调 */
.metric b i{color:var(--teal)}

/* ==========================================================================
   响应式
   ========================================================================== */
/* 超大屏（≥1600px）：内容区放宽，避免两侧留白过多 */
@media (min-width:1600px){
  :root{--maxw:1320px}
}

/* 小屏手机（≤360px）：收窄内边距，给正文留出更多宽度 */
@media (max-width:360px){
  .wrap{padding:0 16px}
  .hero h1{letter-spacing:-.3px}
  .metric{padding:18px 16px}
  .line-card{padding:24px 18px 22px}
  .cap,.ncard{padding-left:20px;padding-right:20px}
}

@media (max-width:1040px){
  .cap-grid,.sol-grid,.news-list{grid-template-columns:repeat(2,1fr)}
  .cap-grid-4{grid-template-columns:repeat(2,1fr)}
  .line-grid{grid-template-columns:1fr}
  .hero-in{grid-template-columns:1fr;gap:44px}
  .art-card{margin:0 auto}
  .about-in{grid-template-columns:1fr;gap:42px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .flow{grid-template-columns:repeat(2,1fr);gap:34px 0}
  .step:nth-child(2)::before{display:none}
}
@media (max-width:768px){
  .nav-links{display:none}
  .nav-links.open{
    display:flex;flex-direction:column;gap:2px;
    position:absolute;left:0;right:0;top:68px;
    background:rgba(10,20,36,.98);padding:14px 20px 20px;
    border-bottom:1px solid rgba(255,255,255,.1);
  }
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .hero{padding:56px 0 66px}
  .sec{padding:62px 0}
  .cap-grid,.sol-grid,.news-list,.feat{grid-template-columns:1fr}
  .cap-grid-4{grid-template-columns:1fr}
  .line-card{padding:28px 24px 26px}
  .lc-num{font-size:33px}
  .tabs{flex-wrap:nowrap;overflow-x:auto;padding-bottom:5px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none}
  .tabs::-webkit-scrollbar{display:none}
  .tab{flex-shrink:0;padding:8px 17px;font-size:13.5px}
  .hero-metrics{grid-template-columns:1fr 1fr;margin-top:52px}
  .metric{padding:20px}
  .flow{grid-template-columns:1fr;gap:30px 0}
  .step:not(:last-child)::before{display:none}
  .feat-body{padding:30px 26px}
  .feat-cover{min-height:190px}
  .art-body{padding:34px 24px}
  .art-nav{grid-template-columns:1fr}
  .anav.right{text-align:left}
  .art-top{padding:42px 0 56px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .contact{padding:56px 0}
  .contact-in{gap:30px}
  .contact-qr{margin:0 auto}
  .contact-qr img{width:158px;height:158px}
  .cway{padding:11px 18px 11px 14px}
  .cway-txt b{font-size:16.5px}
}
@media (max-width:460px){
  .hero-metrics{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr}
}