/* ============================================================
   Techtro 风格模板二核心样式（百昔心理 baixi.vip）
   2026-08-02 一比一重构自 bootstrapmb 15817 (Techtro)
   深蓝紫科技风: #0B1220 背景 / #6366F1→#8B5CF6 渐变 / #1E5AFF CTA
   ============================================================ */
:root{
  --t-dark:#0B1220;          /* 页面深蓝背景 */
  --t-dark-2:#0F1829;        /* 区块深蓝 */
  --t-dark-3:#131E33;        /* 卡片深蓝 */
  --t-navy:#1B2A4A;
  --t-primary:#6366F1;       /* 靛蓝 */
  --t-primary-2:#8B5CF6;     /* 紫罗兰 */
  --t-blue:#1E5AFF;          /* CTA 亮蓝 */
  --t-cyan:#22D3EE;          /* 青色点缀 */
  --t-text:#E6EBF5;
  --t-text-muted:#94A3C7;
  --t-border:rgba(148,163,199,.16);
  --t-grad:linear-gradient(135deg,#6366F1 0%,#8B5CF6 100%);
  --t-grad-blue:linear-gradient(135deg,#1E5AFF 0%,#6366F1 100%);
  --t-radius:14px;
  --t-radius-lg:22px;
  --t-shadow:0 20px 50px rgba(2,6,23,.5);
  --t-font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--t-font);
  background:var(--t-dark);
  color:var(--t-text);
  line-height:1.7;
  font-size:15px;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit;transition:all .3s}
img{max-width:100%;display:block}
ul,ol{list-style:none}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 20px}
section{position:relative}

/* ---------- 装饰：几何多边形 + 网格 + 光晕 ---------- */
.t-bg-poly{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.t-bg-poly::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(99,102,241,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(99,102,241,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 0%,#000 30%,transparent 75%);
}
.t-bg-poly .blob{
  position:absolute;border-radius:50%;filter:blur(90px);opacity:.35;
}
.t-bg-poly .blob.b1{width:480px;height:480px;background:#6366F1;top:-160px;right:-120px}
.t-bg-poly .blob.b2{width:380px;height:380px;background:#8B5CF6;top:30%;left:-160px}
.t-bg-poly .blob.b3{width:300px;height:300px;background:#22D3EE;bottom:-100px;right:20%;opacity:.15}
.t-poly-shape{position:absolute;opacity:.12;pointer-events:none}
.t-poly-shape svg{width:100%;height:100%}

/* ---------- 按钮 ---------- */
.t-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.85rem 1.9rem;border-radius:50px;
  font-size:15px;font-weight:600;letter-spacing:.3px;
  cursor:pointer;border:1px solid transparent;
  transition:all .3s ease;white-space:nowrap;
}
.t-btn-primary{background:var(--t-grad-blue);color:#fff;box-shadow:0 8px 24px rgba(30,90,255,.35)}
.t-btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 32px rgba(30,90,255,.5);color:#fff}
.t-btn-outline{border-color:var(--t-border);color:var(--t-text);background:rgba(255,255,255,.04)}
.t-btn-outline:hover{border-color:var(--t-primary);color:#fff;background:rgba(99,102,241,.12);transform:translateY(-3px)}
.t-btn-ghost{border-color:var(--t-primary);color:#fff;background:rgba(99,102,241,.15)}
.t-btn-ghost:hover{background:var(--t-grad);color:#fff;transform:translateY(-3px)}

/* ---------- 标题 ---------- */
.t-section{padding:100px 0;position:relative}
.t-eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  padding:.45rem 1.2rem;border-radius:50px;
  background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.3);
  color:var(--t-cyan);font-size:13px;font-weight:600;letter-spacing:1.5px;
  text-transform:uppercase;margin-bottom:1.2rem;
}
.t-eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--t-cyan);box-shadow:0 0 12px var(--t-cyan)}
.t-title{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.5px}
.t-title .grad{background:var(--t-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.t-sub{color:var(--t-text-muted);font-size:16px;max-width:640px;margin:1rem auto 0}
.t-center{text-align:center}
.t-center .t-sub{margin-left:auto;margin-right:auto}

/* ---------- 卡片 ---------- */
.t-card{
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--t-border);
  border-radius:var(--t-radius-lg);
  padding:2rem;
  transition:all .35s ease;
  position:relative;
  backdrop-filter:blur(6px);
}
.t-card:hover{
  transform:translateY(-8px);
  border-color:rgba(99,102,241,.45);
  box-shadow:0 24px 48px rgba(2,6,23,.55);
}
.t-card .icon{
  width:62px;height:62px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--t-grad);font-size:26px;color:#fff;
  margin-bottom:1.3rem;box-shadow:0 10px 24px rgba(99,102,241,.4);
}
.t-card h3{font-size:19px;font-weight:700;margin-bottom:.7rem}
.t-card p{color:var(--t-text-muted);font-size:14.5px}
.t-card .link{display:inline-flex;align-items:center;gap:.4rem;margin-top:1.1rem;color:var(--t-cyan);font-size:14px;font-weight:600}
.t-card .link i{transition:transform .3s}
.t-card:hover .link i{transform:translateX(5px)}

/* ---------- 导航 ---------- */
.t-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:1.1rem 0;
  transition:all .35s ease;
  background:transparent;
}
.t-header.scrolled{
  background:rgba(11,18,32,.92);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--t-border);
  padding:.7rem 0;
  box-shadow:0 10px 30px rgba(2,6,23,.4);
}
.t-header-inner{display:flex;align-items:center;justify-content:space-between;gap:2rem}
.t-logo{display:flex;align-items:center;gap:.6rem;font-size:22px;font-weight:800}
.t-logo .logo-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--t-grad);display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:19px;box-shadow:0 8px 20px rgba(99,102,241,.45);
}
.t-nav{display:flex;align-items:center;gap:1.8rem}
.t-nav a{color:var(--t-text-muted);font-size:15px;font-weight:500;position:relative;padding:.3rem 0}
.t-nav a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--t-grad);border-radius:2px;transition:width .3s;
}
.t-nav a:hover,.t-nav a.active{color:#fff}
.t-nav a:hover::after,.t-nav a.active::after{width:100%}
.t-header-actions{display:flex;align-items:center;gap:1rem}
.t-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:6px}
.t-hamburger span{width:26px;height:2.5px;background:#fff;border-radius:3px;transition:all .3s}
.t-hamburger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.t-hamburger.open span:nth-child(2){opacity:0}
.t-hamburger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* 移动端菜单 */
.t-mobile-nav{
  position:fixed;top:0;right:-320px;width:300px;height:100vh;z-index:1001;
  background:#0E1730;border-left:1px solid var(--t-border);
  padding:5rem 2rem 2rem;display:flex;flex-direction:column;gap:1.2rem;
  transition:right .4s ease;box-shadow:-20px 0 60px rgba(2,6,23,.6);
}
.t-mobile-nav.open{right:0}
.t-mobile-nav a{color:var(--t-text);font-size:16px;font-weight:600;padding:.6rem 0;border-bottom:1px solid rgba(148,163,199,.1)}
.t-mobile-nav .t-btn{margin-top:1rem}
.t-overlay{position:fixed;inset:0;background:rgba(2,6,23,.7);z-index:1000;opacity:0;pointer-events:none;transition:opacity .3s;backdrop-filter:blur(4px)}
.t-overlay.show{opacity:1;pointer-events:auto}

/* ---------- Hero ---------- */
.t-hero{
  padding:180px 0 120px;position:relative;overflow:hidden;
  background:
    radial-gradient(ellipse 60% 50% at 75% 20%,rgba(99,102,241,.25),transparent 60%),
    radial-gradient(ellipse 40% 40% at 15% 70%,rgba(139,92,246,.18),transparent 60%),
    var(--t-dark);
}
.t-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3.5rem;align-items:center;position:relative;z-index:2}
.t-hero-badge{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.5rem 1.3rem;border-radius:50px;
  background:rgba(99,102,241,.14);border:1px solid rgba(99,102,241,.35);
  font-size:13px;font-weight:600;color:var(--t-cyan);margin-bottom:1.5rem;
}
.t-hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--t-cyan);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}
.t-hero h1{
  font-size:clamp(34px,4.8vw,56px);font-weight:800;line-height:1.18;
  letter-spacing:-1px;margin-bottom:1.3rem;
}
.t-hero h1 .grad{background:var(--t-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.t-hero p.lead{color:var(--t-text-muted);font-size:17px;max-width:560px;margin-bottom:2.2rem}
.t-hero-btns{display:flex;gap:1rem;flex-wrap:wrap}
.t-hero-stats{display:flex;gap:2.5rem;margin-top:3rem;flex-wrap:wrap}
.t-hero-stats .stat b{font-size:30px;font-weight:800;background:var(--t-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-variant-numeric:tabular-nums}
.t-hero-stats .stat span{display:block;color:var(--t-text-muted);font-size:13px;margin-top:.2rem}

/* Hero 右侧 mockup（仪表盘） */
.t-hero-visual{position:relative;z-index:2}
.t-mockup{
  position:relative;border-radius:20px;overflow:hidden;
  background:linear-gradient(170deg,#121D38,#0B1428);
  border:1px solid rgba(148,163,199,.22);
  box-shadow:0 40px 80px rgba(2,6,23,.65),0 0 0 1px rgba(99,102,241,.08) inset;
  transform:perspective(1200px) rotateY(-4deg) rotateX(2deg);
  transition:transform .5s ease;
}
.t-mockup:hover{transform:perspective(1200px) rotateY(0) rotateX(0)}
.t-mockup-bar{
  display:flex;align-items:center;gap:.5rem;padding:.8rem 1.2rem;
  background:rgba(255,255,255,.04);border-bottom:1px solid var(--t-border);
}
.t-mockup-bar .dots{display:flex;gap:6px}
.t-mockup-bar .dots i{width:11px;height:11px;border-radius:50%;background:#FF5F57}
.t-mockup-bar .dots i:nth-child(2){background:#FEBC2E}
.t-mockup-bar .dots i:nth-child(3){background:#28C840}
.t-mockup-bar .url{
  flex:1;margin-left:.6rem;padding:.35rem .9rem;border-radius:8px;
  background:rgba(255,255,255,.05);font-size:12px;color:var(--t-text-muted);
  display:flex;align-items:center;gap:.5rem;
}
.t-mockup-body{padding:1.4rem}
.t-mockup .kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem;margin-bottom:1rem}
.t-mockup .kpi{
  padding:.8rem;border-radius:12px;
  background:rgba(255,255,255,.045);border:1px solid rgba(148,163,199,.14);
}
.t-mockup .kpi span{font-size:11px;color:var(--t-text-muted)}
.t-mockup .kpi b{display:block;font-size:17px;margin-top:.15rem;font-variant-numeric:tabular-nums}
.t-mockup .kpi b.up{color:#34D399}
.t-mockup .chart-card{
  padding:1rem;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid rgba(148,163,199,.14);margin-bottom:1rem;
}
.t-mockup .chart-card h4{font-size:12px;color:var(--t-text-muted);font-weight:500;margin-bottom:.8rem}
.t-mockup .bars{display:flex;align-items:flex-end;gap:.5rem;height:90px}
.t-mockup .bars i{
  flex:1;border-radius:6px 6px 0 0;
  background:linear-gradient(180deg,#6366F1,#8B5CF6);
  opacity:.85;animation:growBar 1.2s ease both;
}
.t-mockup .bars i:nth-child(2n){background:linear-gradient(180deg,#22D3EE,#6366F1)}
@keyframes growBar{from{height:8%}to{height:var(--h)}}
.t-mockup .list-item{
  display:flex;align-items:center;gap:.8rem;padding:.65rem .8rem;
  border-radius:10px;background:rgba(255,255,255,.03);
  border:1px solid rgba(148,163,199,.1);margin-bottom:.55rem;font-size:13px;
}
.t-mockup .list-item .av{
  width:30px;height:30px;border-radius:50%;background:var(--t-grad);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:#fff;flex-shrink:0;
}
.t-mockup .list-item .meta{margin-left:auto;color:var(--t-cyan);font-weight:600;font-size:12px}

/* 浮动卡片 */
.t-float-card{
  position:absolute;z-index:5;border-radius:14px;padding:.9rem 1.1rem;
  background:rgba(18,29,56,.92);border:1px solid rgba(99,102,241,.4);
  box-shadow:0 18px 40px rgba(2,6,23,.6);
  display:flex;align-items:center;gap:.7rem;font-size:13px;font-weight:600;
  animation:floaty 5s ease-in-out infinite;
  backdrop-filter:blur(8px);
}
.t-float-card .fc-icon{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:15px;color:#fff}
.t-float-card small{display:block;font-weight:400;color:var(--t-text-muted);font-size:11px}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.t-float-card.fc-1{top:6%;left:-8%;animation-delay:0s}
.t-float-card.fc-2{bottom:12%;right:-6%;animation-delay:1.5s}
.t-float-card.fc-3{top:45%;right:-10%;animation-delay:3s}

/* ---------- 功能模块（funshow 网格） ---------- */
.t-features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem;margin-top:3rem}
.t-feature-item .icon{background:var(--t-grad-blue)}
.t-feature-item{text-align:center}
.t-feature-item .icon{margin:0 auto 1.3rem}
.t-feature-item:nth-child(2) .icon{background:linear-gradient(135deg,#22D3EE,#6366F1)}
.t-feature-item:nth-child(3) .icon{background:linear-gradient(135deg,#F59E0B,#F97316)}
.t-feature-item:nth-child(4) .icon{background:linear-gradient(135deg,#34D399,#22D3EE)}
.t-feature-item:nth-child(5) .icon{background:linear-gradient(135deg,#F43F5E,#FB7185)}
.t-feature-item:nth-child(6) .icon{background:linear-gradient(135deg,#A78BFA,#8B5CF6)}

/* ---------- 看板区（多终端覆盖） ---------- */
.t-showcase{background:linear-gradient(180deg,var(--t-dark),var(--t-dark-2));overflow:hidden}
.t-devices{display:flex;justify-content:center;align-items:flex-end;gap:1.5rem;margin-top:3.5rem;perspective:1400px}
.t-device{position:relative;border-radius:16px;border:1px solid var(--t-border);background:#0D162C;box-shadow:var(--t-shadow);overflow:hidden}
.t-device .screen{background:linear-gradient(160deg,#141F3D,#0B1428);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:.6rem;color:var(--t-text-muted);font-size:13px}
.t-device.desk{width:62%;height:320px;border-radius:18px 18px 8px 8px}
.t-device.desk .screen{height:100%;background-image:radial-gradient(circle at 30% 30%,rgba(99,102,241,.25),transparent 60%),radial-gradient(circle at 75% 70%,rgba(34,211,238,.15),transparent 55%)}
.t-device.tab{width:26%;height:280px;border-radius:14px}
.t-device.phone{width:11%;height:340px;border-radius:20px;border-width:3px}
.t-device .mini-bars{display:flex;gap:5px;align-items:flex-end;height:70px;width:70%}
.t-device .mini-bars i{flex:1;border-radius:4px 4px 0 0;background:var(--t-grad);opacity:.8}

/* ---------- 数据统计带 ---------- */
.t-stats-band{
  background:linear-gradient(135deg,rgba(99,102,241,.14),rgba(139,92,246,.1));
  border-top:1px solid rgba(99,102,241,.25);
  border-bottom:1px solid rgba(99,102,241,.25);
  padding:60px 0;
}
.t-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.t-stats-grid .st b{
  font-size:clamp(30px,4vw,44px);font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--t-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.t-stats-grid .st span{color:var(--t-text-muted);font-size:14px;display:block;margin-top:.3rem}

/* ---------- 时间线（How it works） ---------- */
.t-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem;margin-top:3rem;counter-reset:step}
.t-step{position:relative;padding:2rem 1.4rem;text-align:center}
.t-step::before{
  counter-increment:step;content:"0" counter(step);
  display:flex;align-items:center;justify-content:center;
  width:56px;height:56px;margin:0 auto 1.2rem;border-radius:50%;
  background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.4);
  color:var(--t-cyan);font-size:20px;font-weight:800;
}
.t-step h3{font-size:17px;margin-bottom:.5rem}
.t-step p{color:var(--t-text-muted);font-size:13.5px}

/* ---------- 新闻 ---------- */
.t-news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem;margin-top:3rem}
.t-news-card{overflow:hidden;padding:0;background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015))}
.t-news-card .thumb{height:190px;overflow:hidden;background:linear-gradient(135deg,#1B2A4A,#0E1730);display:flex;align-items:center;justify-content:center}
.t-news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.t-news-card:hover .thumb img{transform:scale(1.08)}
.t-news-card .thumb .noimg{font-size:40px;opacity:.3}
.t-news-card .body{padding:1.4rem 1.5rem 1.6rem}
.t-news-card .date{display:inline-flex;align-items:center;gap:.4rem;font-size:12px;color:var(--t-cyan);font-weight:600}
.t-news-card h3{font-size:16.5px;line-height:1.5;margin:.6rem 0 .5rem;font-weight:700}
.t-news-card h3 a:hover{color:var(--t-cyan)}
.t-news-card p{color:var(--t-text-muted);font-size:13.5px;line-height:1.7}
.t-news-card .more{display:inline-flex;align-items:center;gap:.4rem;margin-top:1rem;color:var(--t-cyan);font-size:13px;font-weight:600}
.t-news-card .more i{transition:transform .3s}
.t-news-card:hover .more i{transform:translateX(5px)}

/* ---------- CTA ---------- */
.t-cta{
  border-radius:26px;padding:70px 50px;position:relative;overflow:hidden;
  background:linear-gradient(120deg,#1E3A8A 0%,#4F46E5 50%,#7C3AED 100%);
  text-align:center;box-shadow:0 30px 70px rgba(30,58,138,.4);
}
.t-cta::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:26px 26px;opacity:.4;
}
.t-cta h2{font-size:clamp(26px,3.5vw,40px);font-weight:800;position:relative;z-index:1}
.t-cta p{color:rgba(255,255,255,.85);margin:1rem auto 2rem;max-width:520px;position:relative;z-index:1}
.t-cta .t-btn{position:relative;z-index:1;background:#fff;color:#4F46E5}
.t-cta .t-btn:hover{background:var(--t-dark);color:#fff;transform:translateY(-3px)}

/* ---------- 页脚 ---------- */
.t-footer{border-top:1px solid var(--t-border);background:var(--t-dark-2);padding:70px 0 0;position:relative}
.t-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:2.5rem;padding-bottom:3rem}
.t-footer h4{font-size:16px;font-weight:700;margin-bottom:1.3rem}
.t-footer ul li{margin-bottom:.7rem}
.t-footer ul a{color:var(--t-text-muted);font-size:14px}
.t-footer ul a:hover{color:var(--t-cyan)}
.t-footer .about p{color:var(--t-text-muted);font-size:14px;margin-top:1rem}
.t-footer .social{display:flex;gap:.8rem;margin-top:1.4rem}
.t-footer .social a{
  width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid var(--t-border);
  display:flex;align-items:center;justify-content:center;color:var(--t-text-muted);
}
.t-footer .social a:hover{background:var(--t-grad);color:#fff;transform:translateY(-3px)}
.t-footer .contact li{display:flex;gap:.7rem;color:var(--t-text-muted);font-size:14px;align-items:flex-start}
.t-footer .contact i{color:var(--t-cyan);margin-top:.3rem}
.t-copyright{
  border-top:1px solid var(--t-border);padding:1.4rem 0;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.8rem;
  color:var(--t-text-muted);font-size:13px;
}

/* ---------- 内页横幅 ---------- */
.t-page-hero{padding:170px 0 80px;text-align:center;position:relative;overflow:hidden;
  background:
    radial-gradient(ellipse 50% 60% at 50% 0%,rgba(99,102,241,.22),transparent 65%),
    var(--t-dark);
}
.t-page-hero h1{font-size:clamp(30px,4vw,46px);font-weight:800}
.t-page-hero .crumb{margin-top:1rem;color:var(--t-text-muted);font-size:14px}
.t-page-hero .crumb a{color:var(--t-cyan)}
.t-page-hero .crumb a:hover{color:#fff}

/* ---------- 联系页 ---------- */
.t-contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:3rem;align-items:start}
.t-contact-info .t-card{margin-bottom:1.3rem;display:flex;gap:1.1rem;align-items:flex-start}
.t-contact-info .t-card .icon{width:50px;height:50px;border-radius:14px;margin:0;flex-shrink:0;font-size:20px}
.t-contact-info .t-card h3{font-size:16px;margin-bottom:.3rem}
.t-contact-info .t-card p{font-size:14px}
.t-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.t-form .form-group{margin-bottom:1.2rem}
.t-form label{display:block;font-size:13.5px;color:var(--t-text-muted);margin-bottom:.5rem;font-weight:600}
.t-form input,.t-form textarea{
  width:100%;padding:.85rem 1.1rem;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--t-border);
  color:var(--t-text);font-size:14.5px;font-family:inherit;
  transition:border-color .3s,box-shadow .3s;outline:none;
}
.t-form input:focus,.t-form textarea:focus{border-color:var(--t-primary);box-shadow:0 0 0 3px rgba(99,102,241,.2)}
.t-form textarea{min-height:140px;resize:vertical}
.t-form .captcha-row{display:flex;gap:1rem;align-items:center}
.t-form .captcha-row input{flex:1}
.t-form .captcha-row img{border-radius:10px;height:48px;cursor:pointer;border:1px solid var(--t-border)}

/* ---------- 帮助/FAQ ---------- */
.t-faq-list{max-width:880px;margin:3rem auto 0}
.t-faq-item{
  background:linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  border:1px solid var(--t-border);border-radius:16px;
  margin-bottom:1rem;overflow:hidden;transition:border-color .3s;
}
.t-faq-item.open{border-color:rgba(99,102,241,.5)}
.t-faq-q{
  padding:1.2rem 1.5rem;display:flex;justify-content:space-between;align-items:center;gap:1rem;
  cursor:pointer;font-weight:600;font-size:15.5px;user-select:none;
}
.t-faq-q i{color:var(--t-cyan);transition:transform .3s;flex-shrink:0}
.t-faq-item.open .t-faq-q i{transform:rotate(45deg)}
.t-faq-a{padding:0 1.5rem;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s;color:var(--t-text-muted);font-size:14.5px}
.t-faq-item.open .t-faq-a{max-height:600px;padding:0 1.5rem 1.4rem}

/* ---------- 分页 ---------- */
.t-pagination{display:flex;justify-content:center;gap:.6rem;margin-top:3rem;flex-wrap:wrap}
.t-pagination a,.t-pagination span{
  min-width:42px;height:42px;padding:0 .8rem;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid var(--t-border);
  color:var(--t-text-muted);font-size:14px;transition:all .3s;
}
.t-pagination a:hover{border-color:var(--t-primary);color:#fff;background:rgba(99,102,241,.15)}
.t-pagination .current{background:var(--t-grad);color:#fff;border-color:transparent}

/* ---------- 文章详情 ---------- */
.t-article{max-width:860px;margin:0 auto}
.t-article .t-card{padding:2.5rem}
.t-article h1{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.4;margin-bottom:1rem}
.t-article .meta{display:flex;gap:1.5rem;color:var(--t-text-muted);font-size:13.5px;padding-bottom:1.5rem;border-bottom:1px solid var(--t-border);margin-bottom:2rem;flex-wrap:wrap}
.t-article .meta i{margin-right:.35rem;color:var(--t-cyan)}
.t-article .content{font-size:15.5px;line-height:2;color:#C9D4EA}
.t-article .content img{border-radius:14px;margin:1rem 0}
.t-article .content h2,.t-article .content h3{margin:1.6rem 0 .8rem;color:#fff}
.t-article .content p{margin-bottom:1.1rem}
.t-article .content blockquote{border-left:3px solid var(--t-primary);background:rgba(99,102,241,.08);padding:1rem 1.4rem;border-radius:0 12px 12px 0;margin:1.2rem 0}
.t-article .content table{width:100%;border-collapse:collapse;margin:1rem 0}
.t-article .content td,.t-article .content th{border:1px solid var(--t-border);padding:.6rem .9rem;font-size:14px}
.t-article .content th{background:rgba(99,102,241,.1)}
.t-article-pager{display:flex;justify-content:space-between;gap:1rem;margin-top:2rem;flex-wrap:wrap}
.t-article-pager a{
  padding:.7rem 1.2rem;border-radius:10px;background:rgba(255,255,255,.05);
  border:1px solid var(--t-border);font-size:13.5px;color:var(--t-text-muted);max-width:46%;
}
.t-article-pager a:hover{border-color:var(--t-primary);color:#fff}

/* ---------- esign 电子合同 ---------- */
.t-esign-hero{text-align:center;padding:60px 0 40px}
.t-esign-hero .sign-mark{
  width:90px;height:90px;margin:0 auto 1.5rem;border-radius:24px;
  background:var(--t-grad);display:flex;align-items:center;justify-content:center;
  font-size:42px;color:#fff;box-shadow:0 20px 50px rgba(99,102,241,.5);
  animation:floaty 4s ease-in-out infinite;
}
.t-esign-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem;margin-top:2.5rem}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .t-features-grid,.t-news-grid{grid-template-columns:repeat(2,1fr)}
  .t-steps{grid-template-columns:repeat(2,1fr)}
  .t-footer-grid{grid-template-columns:1fr 1fr}
  .t-hero-grid{grid-template-columns:1fr;gap:3rem}
  .t-hero{padding:150px 0 90px}
  .t-hero-visual{max-width:620px;margin:0 auto}
  .t-contact-grid{grid-template-columns:1fr}
}
@media (max-width:991.98px){
  .t-nav{display:none}
  .t-header-actions .t-btn{display:none}
  .t-hamburger{display:flex}
  .t-stats-grid{grid-template-columns:repeat(2,1fr)}
  .t-devices{flex-wrap:wrap}
  .t-device.desk{width:100%;height:240px}
  .t-device.tab{width:60%}
  .t-device.phone{width:35%;height:300px}
}
@media (max-width:767.98px){
  .t-section{padding:70px 0}
  .t-features-grid,.t-news-grid,.t-steps,.t-form .form-row{grid-template-columns:1fr}
  .t-float-card{display:none}
  .t-footer-grid{grid-template-columns:1fr}
  .t-cta{padding:50px 26px}
  .t-hero-stats{gap:1.6rem}
  .t-hero-stats .stat b{font-size:24px}
  .t-copyright{flex-direction:column;text-align:center}
  .t-mockup .kpi-row{grid-template-columns:repeat(2,1fr)}
}

/* ---------- 移动端底部导航 ---------- */
.t-tabbar{
  display:none;
  position:fixed;
  bottom:0;
  left:0;
  right:0;
  z-index:1000;
  background:rgba(11,18,32,.95);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--t-border);
  padding:0.5rem 0 calc(0.5rem + env(safe-area-inset-bottom));
}
.t-tabbar-item{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:0.25rem;
  padding:0.4rem 0;
  color:var(--t-text-muted);
  text-decoration:none;
  font-size:11px;
  transition:all .25s ease;
}
.t-tabbar-item i{
  font-size:20px;
  margin-bottom:2px;
}
.t-tabbar-item.active,
.t-tabbar-item:hover{
  color:var(--t-cyan);
}
.t-tabbar-item.active i{
  background:var(--t-grad);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
}
@media (max-width: 767.98px){
  .t-tabbar{display:flex}
  body{padding-bottom:calc(70px + env(safe-area-inset-bottom))}
}

/* ---------- 新闻搜索框 ---------- */
.t-search-form input::placeholder{color:var(--t-text-muted)}
.t-search-form input:focus{outline:none;border-color:var(--t-cyan)}