/* =========================================================
   JT-TAG 全球定位防丢标签 专题页
   深圳市捷通科技有限公司  www.jt-rfid.com
   ========================================================= */

:root{
  --ink:#0a1628;
  --ink-2:#3d4d66;
  --ink-3:#6b7c95;
  --navy:#050d1c;
  --navy-2:#0a1830;
  --blue:#0b5fff;
  --blue-deep:#0a3fd0;
  --cyan:#22d3ee;
  --grad:linear-gradient(135deg,#0b5fff 0%,#22d3ee 100%);
  --grad-soft:linear-gradient(135deg,rgba(11,95,255,.12),rgba(34,211,238,.12));
  --bg:#ffffff;
  --bg-soft:#f4f7fc;
  --line:#e3eaf5;
  --shadow-s:0 2px 8px rgba(10,22,40,.06);
  --shadow-m:0 12px 32px rgba(10,22,40,.10);
  --shadow-l:0 24px 64px rgba(10,22,40,.16);
  --r-s:10px; --r-m:16px; --r-l:24px;
  --container:1200px;
  --header-h:72px;
  --ff:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--ff);color:var(--ink);background:var(--bg);
  line-height:1.7;font-size:16px;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 通用 SVG 图标 ---------- */
svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- 滚动进度 ---------- */
.scroll-progress{position:absolute;left:0;bottom:-2px;height:2px;width:0;
  background:var(--grad);z-index:3;transition:width .1s linear}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  transition:background .35s,box-shadow .35s,height .35s;
}
.site-header.is-solid{
  background:rgba(255,255,255,.92);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 1px 0 var(--line),0 8px 24px rgba(10,22,40,.05);
}
.header-inner{height:100%;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;transition:color .35s}
.site-header.is-solid .brand{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;color:#fff;box-shadow:0 6px 18px rgba(11,95,255,.35);
}
.brand-mark svg{width:21px;height:21px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:17px;letter-spacing:.5px}
.brand-text small{font-size:11px;opacity:.72;letter-spacing:.4px}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.site-nav a{
  padding:9px 14px;border-radius:9px;font-size:14.5px;color:#fff;
  opacity:.86;transition:.25s;white-space:nowrap;
}
.site-header.is-solid .site-nav a{color:var(--ink-2)}
.site-nav a:hover{opacity:1;background:rgba(255,255,255,.12)}
.site-header.is-solid .site-nav a:hover{background:var(--bg-soft);color:var(--blue)}
.site-nav a.nav-cta{
  background:var(--grad);color:#fff !important;opacity:1;font-weight:600;
  padding:10px 20px;margin-left:8px;box-shadow:0 6px 20px rgba(11,95,255,.32);
}
.site-nav a.nav-cta:hover{transform:translateY(-2px)}
.nav-toggle{display:none;color:#fff;width:44px;height:44px;place-items:center;margin-left:auto}
.site-header.is-solid .nav-toggle{color:var(--ink)}
.nav-toggle svg{width:26px;height:26px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 26px;border-radius:12px;
  font-size:15.5px;font-weight:600;transition:.25s;border:1px solid transparent;
}
.btn svg{width:19px;height:19px;transition:transform .25s}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 28px rgba(11,95,255,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(11,95,255,.42)}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff;backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-block{width:100%;justify-content:center}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:calc(var(--header-h) + 60px) 0 100px;color:#fff;overflow:hidden;
  background:var(--navy);
}
.hero-bg{
  position:absolute;inset:-60px 0 0 0;
  background:url("../images/hero-bg.png") center/cover no-repeat;
  opacity:.9;will-change:transform;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(4,10,24,.92) 0%,rgba(4,10,24,.68) 45%,rgba(4,10,24,.30) 100%);
}
.hero-grid{
  position:absolute;inset:0;opacity:.35;
  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:64px 64px;
  mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 72%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);
  font-size:13.5px;letter-spacing:.5px;color:#cfe0ff;backdrop-filter:blur(8px);
}
.hero-badge svg{width:16px;height:16px;color:var(--cyan)}
.hero h1{
  font-size:clamp(38px,5.2vw,64px);line-height:1.16;font-weight:800;
  letter-spacing:-.5px;margin:26px 0 22px;
}
.grad-text{
  background:linear-gradient(100deg,#6ea8ff,#22d3ee 55%,#7ef0ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:clamp(15.5px,1.35vw,18px);color:#b8c8e0;max-width:560px}
.hero-sub strong{color:#fff;font-weight:600}
.hero-actions{display:flex;gap:14px;margin:34px 0 44px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;max-width:560px}
.hero-stats li{padding:14px 16px;border-radius:14px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);backdrop-filter:blur(8px)}
.hero-stats strong{display:block;font-size:clamp(20px,2vw,26px);font-weight:800;
  background:linear-gradient(100deg,#8fc0ff,#5eead4);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats span{font-size:12.5px;color:#9db0cc}

/* 手机 mockup */
.hero-visual{position:relative;display:flex;justify-content:center}
.phone{
  width:280px;border-radius:40px;background:#0d1526;border:1px solid rgba(255,255,255,.16);
  padding:12px;box-shadow:0 40px 80px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.05);
  position:relative;z-index:2;animation:floaty 6s ease-in-out infinite;
}
.phone-notch{width:88px;height:22px;background:#0d1526;border-radius:0 0 14px 14px;
  margin:-12px auto 8px;position:relative;z-index:3}
.phone-screen{border-radius:28px;overflow:hidden;position:relative;background:#0a1220;aspect-ratio:9/18}
.phone-screen img{width:100%;height:100%;object-fit:cover;opacity:.94}
.screen-overlay{
  position:absolute;top:12px;left:12px;display:flex;align-items:center;gap:7px;
  padding:6px 12px;border-radius:999px;background:rgba(8,14,28,.72);color:#fff;
  font-size:12px;backdrop-filter:blur(6px);
}
.live-dot{width:7px;height:7px;border-radius:50%;background:#34d399;box-shadow:0 0 0 0 rgba(52,211,153,.6);animation:pulse 1.8s infinite}
.screen-card{
  position:absolute;left:12px;right:12px;bottom:12px;display:flex;gap:10px;align-items:center;
  padding:12px;border-radius:14px;background:rgba(255,255,255,.94);color:var(--ink);box-shadow:var(--shadow-m);
}
.screen-card svg{width:20px;height:20px;color:var(--blue)}
.screen-card strong{display:block;font-size:13.5px}
.screen-card span{font-size:11px;color:var(--ink-3);line-height:1.4}
.float-chip{
  position:absolute;display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:16px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 20px 40px rgba(0,0,0,.35);z-index:3;white-space:nowrap;
}
.float-chip img{width:52px;height:52px;object-fit:contain;background:#fff;border-radius:10px;padding:4px}
.float-chip strong{display:block;font-size:13.5px;color:#fff}
.float-chip span{font-size:11.5px;color:#a9bbd8}
.float-chip .chip-icon{
  width:40px;height:40px;border-radius:11px;background:var(--grad);display:grid;place-items:center;color:#fff;
}
.float-chip .chip-icon svg{width:20px;height:20px}
.chip-a{top:6%;left:-4%;animation:floaty 7s ease-in-out infinite .5s}
.chip-b{bottom:22%;right:-6%;animation:floaty 6.4s ease-in-out infinite 1.1s}
.chip-c{bottom:-2%;left:2%;animation:floaty 7.6s ease-in-out infinite 1.6s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(52,211,153,.6)}70%{box-shadow:0 0 0 10px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}

.scroll-hint{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  color:rgba(255,255,255,.65);border:1px solid rgba(255,255,255,.25);
  animation:bob 2.2s ease-in-out infinite;
}
.scroll-hint svg{width:18px;height:18px}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ---------- Section 通用 ---------- */
.section{padding:104px 0;position:relative}
.section-soft{background:var(--bg-soft)}
.section-dark{background:var(--navy-2);color:#fff}
.section-head{max-width:760px;margin:0 auto 60px;text-align:center}
.section-head h2{font-size:clamp(28px,3.4vw,42px);font-weight:800;letter-spacing:-.4px;margin:14px 0 16px;line-height:1.25}
.section-head p{color:var(--ink-3);font-size:16.5px}
.section-dark .section-head p{color:#93a7c4}
.eyebrow{
  display:inline-block;padding:6px 16px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--blue);background:var(--grad-soft);letter-spacing:1px;
}
.eyebrow-light{background:rgba(255,255,255,.10);color:var(--cyan)}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pain-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:30px 26px;
  position:relative;overflow:hidden;transition:.3s;
}
.pain-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .35s;
}
.pain-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m)}
.pain-card:hover::before{transform:scaleX(1)}
.pain-num{
  font-size:44px;font-weight:800;line-height:1;margin-bottom:14px;
  background:linear-gradient(180deg,rgba(11,95,255,.28),rgba(11,95,255,.04));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.pain-card h3{font-size:18px;margin-bottom:10px}
.pain-card p{font-size:14.5px;color:var(--ink-3)}

/* 对比 */
.compare{
  margin-top:56px;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  padding:34px;box-shadow:var(--shadow-s);
}
.compare-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.ctab{
  padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-2);
  background:var(--bg-soft);border:1px solid var(--line);transition:.25s;
}
.ctab:hover{border-color:var(--blue);color:var(--blue)}
.ctab.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}
.ctab.is-win.is-active{background:var(--grad);border-color:transparent;box-shadow:0 8px 22px rgba(11,95,255,.30)}
.compare-panel{display:none;animation:fadeUp .4s ease}
.compare-panel.is-active{display:block}
.list-bad li,.list-good li{
  display:flex;gap:12px;align-items:flex-start;padding:12px 0;font-size:15.5px;
  border-bottom:1px dashed var(--line);
}
.list-bad li:last-child,.list-good li:last-child{border-bottom:0}
.list-bad li svg{width:20px;height:20px;color:#e11d48;margin-top:2px}
.list-good li svg{width:20px;height:20px;color:#059669;margin-top:2px}

/* ---------- 技术原理 ---------- */
.flow{display:flex;align-items:stretch;gap:12px;margin-bottom:64px}
.flow-step{
  flex:1;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-m);
  padding:28px 22px;text-align:center;transition:.3s;position:relative;
}
.flow-step:hover{background:#fff;box-shadow:var(--shadow-m);transform:translateY(-4px)}
.flow-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--grad);
  display:grid;place-items:center;color:#fff;box-shadow:0 8px 20px rgba(11,95,255,.28);
}
.flow-icon svg{width:26px;height:26px}
.flow-step h4{font-size:16.5px;margin-bottom:8px}
.flow-step p{font-size:13.5px;color:var(--ink-3);line-height:1.65}
.flow-arrow{display:grid;place-items:center;color:#b8c6dd}
.flow-arrow svg{width:24px;height:24px}

.tech-split{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.tech-media{margin:0}
.tech-media img{border-radius:var(--r-l);box-shadow:var(--shadow-l);width:100%}
.tech-media figcaption{margin-top:14px;text-align:center;font-size:13.5px;color:var(--ink-3)}
.tpoint{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.tpoint:last-child{border-bottom:0}
.tpoint-icon{
  width:50px;height:50px;border-radius:14px;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--blue);flex:none;box-shadow:var(--shadow-s);
}
.tpoint h4{font-size:17px;margin-bottom:6px}
.tpoint p{font-size:14.5px;color:var(--ink-3)}

/* ---------- 核心优势 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.fcard{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:30px 26px;transition:.3s;
}
.fcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-m);border-color:transparent}
.fcard-icon{
  width:52px;height:52px;border-radius:14px;background:var(--grad-soft);color:var(--blue);
  display:grid;place-items:center;margin-bottom:18px;transition:.3s;
}
.fcard:hover .fcard-icon{background:var(--grad);color:#fff;transform:scale(1.06)}
.fcard h3{font-size:17.5px;margin-bottom:10px}
.fcard p{font-size:14.5px;color:var(--ink-3)}

/* ---------- 产品矩阵 ---------- */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pcard{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  display:flex;flex-direction:column;transition:.3s;
}
.pcard:hover{transform:translateY(-8px);box-shadow:var(--shadow-l);border-color:transparent}
.pcard-media{position:relative;background:linear-gradient(160deg,#f7fafd,#eef3fa);padding:22px;min-height:190px;display:grid;place-items:center}
.pcard-media img{max-height:150px;object-fit:contain;width:auto;max-width:100%;transition:transform .35s}
.pcard:hover .pcard-media img{transform:scale(1.07)}
.pcard-flag{
  position:absolute;top:12px;left:12px;padding:4px 11px;border-radius:999px;font-size:11.5px;font-weight:600;
  background:var(--grad);color:#fff;letter-spacing:.4px;
}
.pcard-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.pcard-body h3{font-size:17px}
.pcard-model{font-size:12.5px;color:var(--blue);font-weight:600;letter-spacing:.6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.pcard-body>p{font-size:13.8px;color:var(--ink-3);line-height:1.65;flex:1}
.pcard-specs{display:flex;gap:8px;flex-wrap:wrap}
.pcard-specs span{
  font-size:12px;padding:5px 10px;border-radius:7px;background:var(--bg-soft);
  color:var(--ink-2);border:1px solid var(--line);
}
.pcard-btn{
  margin-top:6px;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px;border-radius:10px;font-size:14.5px;font-weight:600;color:var(--blue);
  border:1px solid var(--line);transition:.25s;
}
.pcard-btn svg{width:17px;height:17px}
.pcard-btn:hover{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 20px rgba(11,95,255,.28)}
.product-note{margin-top:32px;text-align:center;font-size:13.5px;color:var(--ink-3)}

/* ---------- 全球定位 ---------- */
.map-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:48px}
.map-card{
  margin:0;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-m);overflow:hidden;transition:.3s;
}
.map-card:hover{transform:translateY(-6px);background:rgba(255,255,255,.08)}
.map-card img{width:100%;height:190px;object-fit:cover;filter:saturate(.9)}
.map-card figcaption{padding:14px 18px;display:flex;flex-direction:column;gap:2px}
.map-card figcaption strong{font-size:15px;color:#fff}
.map-card figcaption span{font-size:12.5px;color:#8fa5c4}
.global-badges{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.gbadge{
  display:flex;gap:14px;align-items:center;padding:20px;border-radius:var(--r-m);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
}
.gbadge svg{width:26px;height:26px;color:var(--cyan)}
.gbadge strong{display:block;font-size:15px;color:#fff}
.gbadge span{font-size:12.5px;color:#8fa5c4}

/* ---------- 应用场景 ---------- */
.apps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.acard{
  padding:28px 24px;border-radius:var(--r-m);background:#fff;border:1px solid var(--line);transition:.3s;
}
.acard:hover{transform:translateY(-6px);box-shadow:var(--shadow-m)}
.acard-icon{
  width:50px;height:50px;border-radius:14px;background:var(--grad-soft);color:var(--blue);
  display:grid;place-items:center;margin-bottom:16px;
}
.acard h3{font-size:17px;margin-bottom:8px}
.acard p{font-size:14px;color:var(--ink-3)}

/* ---------- 技术壁垒 ---------- */
.strength-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center}
.strength-item{
  padding:44px 30px;background:#fff;border-radius:var(--r-l);border:1px solid var(--line);
  box-shadow:var(--shadow-s);transition:.3s;
}
.strength-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-m)}
.strength-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:18px;background:var(--grad);
  display:grid;place-items:center;color:#fff;box-shadow:0 10px 24px rgba(11,95,255,.30);
}
.strength-icon svg{width:30px;height:30px}
.strength-item h3{font-size:19px;margin-bottom:10px}
.strength-item p{font-size:14.5px;color:var(--ink-3)}

/* ---------- 合作模式 ---------- */
.coop-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:56px}
.coop-card{
  position:relative;padding:34px 28px;border-radius:var(--r-m);background:#fff;
  border:1px solid var(--line);transition:.3s;overflow:hidden;
}
.coop-card::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:140px;height:140px;border-radius:50%;
  background:var(--grad-soft);opacity:0;transition:.35s;
}
.coop-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m)}
.coop-card:hover::after{opacity:1;transform:scale(1.4)}
.coop-tag{
  display:inline-block;font-size:12.5px;font-weight:700;padding:5px 13px;border-radius:999px;
  background:var(--grad-soft);color:var(--blue);margin-bottom:16px;letter-spacing:.5px;
}
.coop-card h3{font-size:19px;margin-bottom:10px;position:relative;z-index:1}
.coop-card p{font-size:14.5px;color:var(--ink-3);position:relative;z-index:1}

.steps{display:flex;align-items:flex-start;gap:16px}
.step{flex:1;text-align:center;padding:28px 20px;border-radius:var(--r-m);background:var(--bg-soft);border:1px solid var(--line)}
.step-num{
  display:inline-grid;place-items:center;width:44px;height:44px;border-radius:50%;
  background:var(--grad);color:#fff;font-weight:800;font-size:16px;margin-bottom:14px;
}
.step h4{font-size:16.5px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--ink-3)}
.step-line{flex:none;width:34px;height:2px;background:linear-gradient(90deg,#c7d5ec,#9fb8e0);margin-top:48px}

/* ---------- 联系 ---------- */
.section-cta{background:var(--navy);color:#fff;overflow:hidden;position:relative}
.section-cta::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background:url("../images/hero-bg.png") center/cover no-repeat;
  mask-image:linear-gradient(180deg,transparent,#000 40%);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 40%);
}
.contact-wrap{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.contact-copy h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;margin:14px 0 18px}
.contact-copy>p{color:#a6b8d4;font-size:16px;max-width:480px}
.contact-list{margin-top:32px;display:grid;gap:14px}
.contact-list li{display:flex;align-items:center;gap:13px;font-size:15.5px;color:#d7e2f2}
.contact-list svg{width:20px;height:20px;color:var(--cyan)}
.contact-list a:hover{color:var(--cyan)}
.contact-form{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-l);padding:34px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.contact-form h3{font-size:20px;margin-bottom:20px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{display:flex;flex-direction:column;gap:7px;font-size:13.5px;color:#b7c8e2;margin-bottom:14px}
.contact-form label .lb{display:inline-flex;align-items:center;gap:3px}
.contact-form label .lb i{font-style:normal;color:#ff7a90;font-size:14px;line-height:1}
.contact-form input,.contact-form select,.contact-form textarea{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:10px;
  padding:12px 14px;color:#fff;transition:.25s;resize:vertical;
}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#6f84a4}
.contact-form select option{color:var(--ink)}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{
  outline:none;border-color:var(--cyan);background:rgba(255,255,255,.10);
}
.contact-form button[disabled]{opacity:.6;cursor:not-allowed;transform:none}
.form-tip{margin-top:12px;font-size:12.5px;color:#8ea3c2;line-height:1.6;transition:color .25s}
.form-tip.ok{color:#4ade80}
.form-tip.err{color:#ff7a90}
.form-tip.warn{color:#fbbf24}

/* ---------- Footer ---------- */
.site-footer{background:#03080f;color:#8ea3c2;padding:52px 0 30px}
.footer-inner{display:grid;grid-template-columns:1.2fr auto;gap:32px;align-items:flex-start}
.footer-brand{display:flex;gap:14px;align-items:flex-start}
.footer-brand strong{color:#fff;font-size:16.5px}
.footer-brand p{font-size:13.5px;margin-top:6px}
.footer-nav{display:flex;gap:6px;flex-wrap:wrap}
.footer-nav a{padding:8px 14px;border-radius:8px;font-size:14px;transition:.25s}
.footer-nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.footer-copy{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.09);padding-top:22px;
  margin-top:8px;font-size:13px;text-align:center}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:26px;bottom:26px;width:48px;height:48px;border-radius:14px;z-index:90;
  background:var(--grad);color:#fff;display:grid;place-items:center;opacity:0;pointer-events:none;
  transform:translateY(14px);transition:.3s;box-shadow:0 12px 28px rgba(11,95,255,.35);
}
.back-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
.back-top:hover{transform:translateY(-3px)}

/* ---------- 弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:200;display:none}
.modal.is-open{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(4,10,24,.72);backdrop-filter:blur(6px);animation:fade .25s ease}
.modal-box{
  position:relative;z-index:2;max-width:820px;margin:5vh auto;width:calc(100% - 32px);
  max-height:90vh;overflow:auto;background:#fff;border-radius:var(--r-l);
  animation:pop .3s cubic-bezier(.2,.9,.3,1.2);box-shadow:0 30px 80px rgba(0,0,0,.4);
}
.modal-close{
  position:sticky;top:14px;margin-left:auto;margin-right:14px;display:grid;place-items:center;
  width:38px;height:38px;border-radius:50%;background:#fff;color:var(--ink);
  box-shadow:var(--shadow-m);z-index:5;
}
.modal-close:hover{background:var(--ink);color:#fff}
.modal-body{padding:0 34px 34px;margin-top:-38px}
.pm-head{display:flex;gap:26px;align-items:center;padding-top:10px}
.pm-head img{
  width:170px;height:150px;object-fit:contain;background:var(--bg-soft);
  border-radius:var(--r-m);padding:14px;flex:none;
}
.pm-head h3{font-size:24px;margin:6px 0 8px}
.pm-model{font-size:13.5px;color:var(--blue);font-weight:700;letter-spacing:.6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.pm-head p{font-size:14.5px;color:var(--ink-3)}
.pm-features{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 24px}
.pm-features span{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;padding:7px 13px;border-radius:999px;
  background:var(--grad-soft);color:var(--blue-deep);font-weight:600;
}
.pm-features svg{width:15px;height:15px}
.pm-table{width:100%;border-collapse:collapse;font-size:14.5px}
.pm-table caption{text-align:left;font-weight:700;font-size:16px;padding:6px 0 14px}
.pm-table th,.pm-table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.pm-table th{width:120px;color:var(--ink-3);font-weight:500;white-space:nowrap;background:var(--bg-soft)}
.pm-table td{font-weight:600;color:var(--ink)}
.pm-apps{margin-top:22px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.pm-apps strong{font-size:14px;margin-right:4px;color:var(--ink-2)}
.pm-apps span{font-size:12.5px;padding:5px 11px;border-radius:999px;background:var(--bg-soft);color:var(--ink-2);border:1px solid var(--line)}
.pm-cta{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}
.pm-cta .btn{padding:12px 22px;font-size:14.5px}
.btn-outline{border:1px solid var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}
.modal .btn-primary{border:0}

@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(24px) scale(.97)}to{opacity:1;transform:none}}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}
.d1{transition-delay:.10s}.d2{transition-delay:.20s}.d3{transition-delay:.30s}.d4{transition-delay:.40s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none !important}
  html{scroll-behavior:auto}
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1080px){
  .pain-grid,.feature-grid,.apps-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .map-grid{grid-template-columns:repeat(2,1fr)}
  .global-badges{grid-template-columns:repeat(2,1fr)}
  .coop-grid,.strength-grid{grid-template-columns:repeat(2,1fr)}
  .strength-grid{grid-template-columns:1fr}
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero-visual{order:-1}
  .hero{padding-top:calc(var(--header-h) + 40px)}
  .phone{width:250px}
  .chip-a{left:0}.chip-b{right:0}
  .site-nav{
    position:fixed;top:var(--header-h);right:0;left:0;
    flex-direction:column;align-items:stretch;gap:2px;padding:16px 20px 22px;
    background:rgba(255,255,255,.98);backdrop-filter:blur(18px);
    box-shadow:0 20px 40px rgba(10,22,40,.12);border-top:1px solid var(--line);
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:.28s;
  }
  .site-nav.is-open{transform:none;opacity:1;pointer-events:auto}
  .site-nav a{color:var(--ink-2) !important;padding:13px 16px;font-size:15.5px}
  .site-nav a:hover{background:var(--bg-soft)}
  .site-nav a.nav-cta{margin-left:0;margin-top:8px;text-align:center}
  .nav-toggle{display:grid}
  .site-header{background:rgba(255,255,255,.92);backdrop-filter:blur(14px)}
  .site-header .brand,.site-header .nav-toggle{color:var(--ink)}
}
@media (max-width:760px){
  .section{padding:76px 0}
  .section-head{margin-bottom:44px}
  .pain-grid,.feature-grid,.apps-grid,.product-grid,.map-grid,
  .global-badges,.coop-grid,.strength-grid,.field-row{grid-template-columns:1fr}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .flow{flex-direction:column}
  .flow-arrow{transform:rotate(90deg);margin:-6px 0}
  .tech-split{grid-template-columns:1fr;gap:36px}
  .hero{padding-bottom:80px;min-height:auto}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-actions .btn{width:100%;justify-content:center}
  .contact-wrap{grid-template-columns:1fr;gap:40px}
  .steps{flex-direction:column;align-items:stretch}
  .step-line{width:2px;height:26px;margin:0 auto}
  .compare{padding:22px 18px}
  .modal-body{padding:0 20px 26px}
  .pm-head{flex-direction:column;text-align:center}
  .pm-features{justify-content:center}
  .footer-inner{grid-template-columns:1fr}
  .back-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .product-grid{grid-template-columns:1fr}
  .hero-stats{gap:6px}
  .float-chip{display:none}
  .brand-text small{display:none}
  .pcard-specs span{font-size:11.5px}
}