/* ==========================================================================
   GridCMS 官网设计系统  v1.0
   品牌：GridCMS（平台主品牌） × 格物 GridBox（边缘网关）
   基底：深色 #050810 ｜ 装饰色仅青 #22d3ee / 绿 #34d399
   ========================================================================== */

:root{
  --bg:#050810;
  --panel:#0c1220;
  --panel-2:#111a2b;
  --border:#1a2540;
  --cyan:#22d3ee;
  --mint:#34d399;
  --amber:#fbbf24;
  --red:#f87171;
  --text:#e6edf7;
  --text-dim:rgba(230,237,247,.55);
  --text-faint:rgba(230,237,247,.35);
  --grad:linear-gradient(92deg,#22d3ee,#34d399);
  --mono:'JetBrains Mono','PingFang SC','Microsoft YaHei',monospace;
  --sans:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
  --r-lg:12px; --r-md:6px; --r-sm:4px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--text);
  font-size:15.5px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
::selection{background:rgba(34,211,238,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:8px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#1c2947;border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:#25355c}

/* ---------- 排版 ---------- */
h1,h2,h3,h4,h5{font-weight:800;line-height:1.3;letter-spacing:.01em;color:var(--text)}
.h-1{font-size:clamp(26px,2.6vw,36px);line-height:1.28}
.h-2{font-size:clamp(21px,2vw,27px)}
.lead{font-size:16px;line-height:1.9;color:var(--text-dim)}
.muted{color:var(--text-dim)}
.dim{color:var(--text-faint)}
.mono{font-family:var(--mono)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.grad-text{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11.5px;font-weight:500;
  letter-spacing:.28em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--grad)}
.tlink{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14.5px;font-weight:600;color:var(--cyan);
  transition:color .15s ease;
}
.tlink:hover{color:#7be7f7}
.tlink svg{transition:transform .25s var(--ease)}
.tlink:hover svg{transform:translate(2px,-2px)}

/* ---------- 布局 ---------- */
.container{width:min(1140px,92%);margin:0 auto}
.container-wide{width:min(1300px,94%);margin:0 auto}
.section{padding:104px 0}
.section-sm{padding:56px 0}
.section-head{max-width:660px;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}
.section-head h2{margin:16px 0 14px}
.panel{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:clamp(30px,4.6vw,58px);
  position:relative;
  overflow:hidden;
}
.panel-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(34,211,238,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,211,238,.045) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(70% 70% at 50% 40%,#000,transparent);
  mask-image:radial-gradient(70% 70% at 50% 40%,#000,transparent);
}

/* ---------- 状态灯 ---------- */
.status-dot{
  display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px var(--cyan);
  animation:pulse 1.5s ease-in-out infinite;
  flex:none;
}
.status-dot.mint{background:var(--mint);box-shadow:0 0 8px var(--mint)}
.status-dot.amber{background:var(--amber);box-shadow:0 0 8px var(--amber)}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:68px;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(5,8,16,.78);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom-color:var(--border);
}
.site-header .container-wide{height:68px;display:flex;align-items:center;gap:36px}
.header-logo{display:flex;align-items:center;gap:11px;flex:none}
.header-logo img{width:30px;height:30px}
.header-logo span{
  font-family:var(--mono);font-size:16.5px;font-weight:700;letter-spacing:.06em;
}
.header-logo em{
  font-style:normal;font-family:var(--mono);font-size:10px;letter-spacing:.2em;
  color:var(--text-faint);border:1px solid var(--border);border-radius:3px;
  padding:2px 6px;margin-left:2px;
}
.site-nav{display:flex;gap:4px;margin-left:auto}
.site-nav a{
  position:relative;
  font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.16em;
  color:var(--text-dim);
  padding:8px 13px;border-radius:var(--r-md);
  transition:color .15s ease,background .15s ease;
}
.site-nav a:hover{color:var(--text);background:rgba(34,211,238,.07)}
.site-nav a.active{color:var(--cyan)}
.site-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--grad);border-radius:2px;
}
.header-cta{display:flex;align-items:center;gap:14px}
.menu-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;color:var(--text)}
.menu-toggle svg{width:22px;height:22px}

/* Mobile menu */
.mobile-menu{
  position:fixed;inset:0;z-index:200;background:rgba(5,8,16,.97);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  display:flex;flex-direction:column;padding:26px 7%;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s;
}
.mobile-menu.is-open{opacity:1;visibility:visible}
.mobile-menu-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:38px}
.mobile-menu-head img{width:34px;height:34px}
.mobile-menu nav{display:flex;flex-direction:column}
.mobile-menu nav a{
  font-size:21px;font-weight:700;padding:13px 0;
  border-bottom:1px solid var(--border);
  display:flex;justify-content:space-between;align-items:baseline;
  color:var(--text);
}
.mobile-menu nav a small{font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:var(--text-faint);text-transform:uppercase}
.mobile-menu .btn{margin-top:32px}

/* ==========================================================================
   按钮
   ========================================================================== */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-size:14.5px;font-weight:700;letter-spacing:.06em;
  padding:14px 26px;border-radius:var(--r-md);
  transition:filter .15s ease,transform .15s ease,border-color .15s ease,color .15s ease,background .15s ease;
  overflow:hidden;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn svg{transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{
  background:var(--grad);color:#031018;
  letter-spacing:.1em;
}
.btn-primary:hover{filter:brightness(1.12)}
.btn-ghost{
  background:transparent;border:1px solid var(--border);color:var(--text);
}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-sm{padding:10.5px 20px;font-size:13.5px}
.btn-block{width:100%}
/* 加载态：白色微光带扫过 */
.btn.is-loading{pointer-events:none;filter:brightness(.92)}
.btn.is-loading::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,transparent 20%,rgba(255,255,255,.35) 50%,transparent 80%);
  background-size:220% 100%;
  animation:btnshine 1.1s linear infinite;
}
@keyframes btnshine{from{background-position:180% 0}to{background-position:-80% 0}}

/* ==========================================================================
   Hero（首页首屏）
   ========================================================================== */
.hero{
  position:relative;min-height:100svh;
  display:flex;flex-direction:column;justify-content:center;
  padding:150px 0 0;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;z-index:-1;overflow:hidden}
.hero-bg img{
  width:100%;height:100%;object-fit:cover;
  animation:bgdrift 40s ease-in-out infinite alternate;
}
@keyframes bgdrift{from{transform:scale(1)}to{transform:scale(1.06)}}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,16,.82) 0%,rgba(5,8,16,.55) 42%,rgba(5,8,16,.86) 78%,var(--bg) 100%);
}
.hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;
  flex:1;padding-bottom:70px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  color:var(--text-dim);
  border:1px solid var(--border);border-radius:100px;
  padding:8px 18px;margin-bottom:28px;
  background:rgba(12,18,32,.55);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.hero h1{
  font-size:clamp(38px,4.4vw,62px);font-weight:800;line-height:1.16;
  letter-spacing:.02em;margin-bottom:24px;
}
.hero .lead{max-width:540px;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center}

/* 实时遥测条：玻璃格容器 + 1px 分隔 */
.telemetry{
  display:flex;margin-top:44px;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:rgba(12,18,32,.6);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  overflow:hidden;
}
.t-cell{flex:1;padding:16px 20px;border-left:1px solid var(--border);min-width:0}
.t-cell:first-child{border-left:none}
.t-cell .t-label{
  display:flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--text-faint);margin-bottom:6px;white-space:nowrap;
}
.t-cell .t-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:21px;font-weight:700;color:var(--cyan);line-height:1.2;
}
.t-cell .t-num em{font-style:normal;font-size:12px;font-weight:500;color:var(--text-dim);margin-left:5px}
.t-cell .t-trend{font-family:var(--mono);font-size:10.5px;color:var(--mint);margin-left:8px}
.t-cell .t-trend.down{color:var(--mint)}
.t-cell .t-trend.up{color:var(--cyan)}

/* 迷你看板 */
.mini-dash{
  position:relative;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:rgba(12,18,32,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:22px 24px;
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.mini-dash::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.6),transparent);
}
.md-head{
  display:flex;justify-content:space-between;align-items:center;
  padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid var(--border);
}
.md-head .md-title{font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--text-dim)}
.md-head .md-live{display:flex;align-items:center;gap:7px;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--mint)}
.md-row{display:flex;justify-content:space-between;align-items:baseline;padding:9px 0;font-size:13.5px}
.md-row .k{color:var(--text-dim);display:flex;align-items:center;gap:9px}
.md-row .v{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:600;font-size:14px}
.md-row .v em{font-style:normal;font-size:11px;color:var(--text-faint);font-weight:400;margin-left:4px}
.md-bars{display:flex;align-items:flex-end;gap:5px;height:56px;margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}
.md-bars i{
  flex:1;border-radius:2px 2px 0 0;
  background:linear-gradient(180deg,rgba(34,211,238,.85),rgba(52,211,153,.25));
  animation:barwave 3.4s ease-in-out infinite;
  transform-origin:bottom;
}
.md-bars i:nth-child(2n){animation-delay:.35s}
.md-bars i:nth-child(3n){animation-delay:.7s}
.md-bars i:nth-child(4n){animation-delay:1.05s}
@keyframes barwave{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.72)}}
.md-foot{
  margin-top:14px;font-family:var(--mono);font-size:10px;letter-spacing:.16em;
  color:var(--text-faint);display:flex;justify-content:space-between;
}

/* ==========================================================================
   Stats band
   ========================================================================== */
.stats-band{
  position:relative;overflow:hidden;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--panel);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.stat-cell{padding:38px 26px;text-align:center;border-left:1px solid var(--border)}
.stat-cell:first-child{border-left:none}
.s-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(30px,3vw,40px);font-weight:700;color:var(--text);line-height:1.15;
}
.s-num em{
  font-style:normal;font-size:.5em;font-weight:500;margin-left:6px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.s-label{margin-top:8px;font-size:13px;color:var(--text-dim);letter-spacing:.04em}

/* ==========================================================================
   数据流四步管线
   ========================================================================== */
.flow-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:flow}
.flow-step{
  position:relative;padding:30px 28px 34px;
  border:1px solid var(--border);border-left:none;
  background:var(--panel);
  transition:background .2s ease;
}
.flow-step:first-child{border-left:1px solid var(--border);border-radius:var(--r-lg) 0 0 var(--r-lg)}
.flow-step:last-child{border-radius:0 var(--r-lg) var(--r-lg) 0}
.flow-step:hover{background:var(--panel-2)}
.fs-num{
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;color:var(--cyan);
  display:block;margin-bottom:16px;
}
.flow-step h3{font-size:17px;margin-bottom:10px}
.flow-step p{font-size:13.5px;line-height:1.8;color:var(--text-dim)}
.flow-step .fs-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:16px}
.flow-step .fs-tags span{
  font-family:var(--mono);font-size:10px;letter-spacing:.1em;
  border:1px solid var(--border);border-radius:3px;padding:3px 8px;color:var(--text-faint);
}
.flow-step .fs-arrow{
  position:absolute;right:-9px;top:38px;z-index:2;
  width:18px;height:18px;color:var(--cyan);
  filter:drop-shadow(0 0 5px rgba(34,211,238,.7));
}
.flow-step:last-child .fs-arrow{display:none}

/* ==========================================================================
   产品双卡
   ========================================================================== */
.duo-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.duo-card{
  position:relative;overflow:hidden;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--panel);
  padding:clamp(30px,3.4vw,46px);
  min-height:400px;
  transition:border-color .2s ease;
}
.duo-card:hover{border-color:#26395f}
.duo-card::before{
  content:"";position:absolute;top:0;left:10%;right:10%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.55),transparent);
}
.duo-card > *:not(img):not(.panel-lines){position:relative;z-index:1}
.duo-tag{
  display:inline-block;font-family:var(--mono);font-size:10.5px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--cyan);
  border:1px solid rgba(34,211,238,.35);border-radius:3px;padding:4px 10px;
}
.duo-card h3{font-size:clamp(24px,2.4vw,31px);margin:16px 0 12px;max-width:60%}
.duo-card p{font-size:14.5px;line-height:1.85;color:var(--text-dim);max-width:56%}
.duo-list{margin-top:18px;max-width:58%}
.duo-list li{
  font-size:13.5px;color:var(--text-dim);padding:6px 0 6px 20px;position:relative;
}
.duo-list li::before{
  content:"";position:absolute;left:2px;top:15px;width:7px;height:7px;border-radius:50%;
  border:1.5px solid var(--mint);
}
.duo-foot{display:flex;align-items:center;gap:18px;margin-top:26px;max-width:60%;flex-wrap:wrap}
.duo-img{
  position:absolute;right:-14px;bottom:-14px;width:46%;max-width:330px;z-index:0;
  border-radius:var(--r-md);
  filter:drop-shadow(0 18px 40px rgba(0,0,0,.5));
}
.duo-img.shot{border-radius:10px;border:1px solid var(--border);right:18px;bottom:18px;width:44%}

/* ==========================================================================
   平台能力六宫格
   ========================================================================== */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cap-card{
  position:relative;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--panel);padding:28px 26px;
  transition:border-color .2s ease,background .2s ease;
}
.cap-card:hover{border-color:rgba(34,211,238,.4);background:var(--panel-2)}
.cap-ic{
  width:38px;height:38px;border-radius:9px;margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(34,211,238,.3);
  background:rgba(34,211,238,.07);color:var(--cyan);
}
.cap-card h3{font-size:16.5px;margin-bottom:9px}
.cap-card p{font-size:13.5px;line-height:1.8;color:var(--text-dim)}
.cap-card .cap-meta{
  margin-top:14px;font-family:var(--mono);font-size:10px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--text-faint);
}

/* ==========================================================================
   SKU 卡
   ========================================================================== */
.sku-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;position:relative}
.sku-card{
  position:relative;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--panel-2);padding:34px 32px;
  transition:border-color .2s ease;
}
.sku-card:hover{border-color:#26395f}
.sku-card.is-feature{border-color:rgba(34,211,238,.45)}
.sku-card.is-feature::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),transparent);
}
.sku-head{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:22px}
.sku-name{font-size:21px;font-weight:800}
.sku-name small{
  display:block;font-family:var(--mono);font-size:10px;font-weight:500;
  letter-spacing:.26em;color:var(--text-faint);margin-top:5px;text-transform:uppercase;
}
.sku-badge{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;
  padding:4px 11px;border-radius:3px;flex:none;
}
.sku-badge.cyan{color:var(--cyan);border:1px solid rgba(34,211,238,.4);background:rgba(34,211,238,.08)}
.sku-badge.mint{color:var(--mint);border:1px solid rgba(52,211,153,.4);background:rgba(52,211,153,.08)}
.sku-list li{
  font-size:14px;color:var(--text-dim);padding:8px 0 8px 24px;position:relative;
  border-bottom:1px dashed rgba(26,37,64,.8);
}
.sku-list li:last-child{border-bottom:none}
.sku-list li::before{
  content:"";position:absolute;left:4px;top:16px;width:8px;height:8px;border-radius:50%;
  border:2px solid var(--cyan);
}
.sku-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:24px;flex-wrap:wrap}
.sku-price b{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--text);
}
.sku-price span{font-size:12.5px;color:var(--text-faint);margin-left:6px}
.sku-reco{
  margin-top:20px;padding-top:16px;border-top:1px solid var(--border);
  font-size:12.5px;color:var(--text-dim);display:flex;align-items:center;gap:9px;
}

/* ==========================================================================
   终端代码卡 / API 三步
   ========================================================================== */
.api-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.api-steps{counter-reset:api}
.api-step{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid var(--border)}
.api-step:last-child{border-bottom:none}
.api-step .as-num{
  font-family:var(--mono);font-size:12px;font-weight:700;color:var(--cyan);
  width:34px;height:34px;flex:none;border:1px solid rgba(34,211,238,.35);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
}
.api-step h3{font-size:16.5px;margin-bottom:6px}
.api-step p{font-size:13.5px;color:var(--text-dim);line-height:1.8}
.terminal{
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:#070b14;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.term-head{
  display:flex;align-items:center;gap:8px;
  padding:13px 18px;border-bottom:1px solid var(--border);background:var(--panel);
}
.term-head .tdot{width:10px;height:10px;border-radius:50%;background:#1f2c4d}
.term-head .tdot:nth-child(1){background:rgba(248,113,113,.75)}
.term-head .tdot:nth-child(2){background:rgba(251,191,36,.75)}
.term-head .tdot:nth-child(3){background:rgba(52,211,153,.75)}
.term-head .term-title{
  margin-left:auto;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--text-faint);
}
.term-body{
  padding:22px 24px;
  font-family:var(--mono);font-size:12.8px;line-height:1.9;
  overflow-x:auto;white-space:pre;
}
.term-body .tk-p{color:var(--cyan)}       /* 提示符/命令 */
.term-body .tk-m{color:var(--mint)}       /* 成功/值 */
.term-body .tk-d{color:var(--text-faint)} /* 注释 */
.term-body .tk-t{color:var(--text)}       /* 正文 */
.term-body .tk-a{color:var(--amber)}      /* 状态码等 */
.llms-note{
  margin-top:22px;display:flex;gap:12px;align-items:flex-start;
  border:1px dashed rgba(34,211,238,.3);border-radius:var(--r-md);
  padding:14px 18px;font-size:13px;color:var(--text-dim);
}
.llms-note .mono{color:var(--cyan);font-size:12px}

/* ==========================================================================
   解决方案横滑
   ========================================================================== */
.h-scroll-wrap{overflow:hidden}
.h-scroll{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px max(4%,calc((100vw - 1140px)/2)) 22px;
  scrollbar-width:none;
}
.h-scroll::-webkit-scrollbar{display:none}
.sol-card{
  flex:0 0 min(400px,84vw);scroll-snap-align:start;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--panel);overflow:hidden;
  transition:border-color .2s ease,transform .3s var(--ease);
}
.sol-card:hover{border-color:rgba(34,211,238,.4);transform:translateY(-4px)}
.sol-card img{width:100%;height:200px;object-fit:cover;opacity:.9}
.sol-body{padding:24px 26px 28px}
.sol-idx{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--cyan);display:block;margin-bottom:10px;
}
.sol-body h3{font-size:19px;margin-bottom:8px}
.sol-body p{font-size:13.5px;line-height:1.8;color:var(--text-dim);margin-bottom:14px}
.sol-body ul{display:flex;gap:8px;flex-wrap:wrap}
.sol-body ul li{
  font-size:11.5px;color:var(--text-dim);
  border:1px solid var(--border);border-radius:3px;padding:3px 10px;
}
.h-scroll-nav{display:flex;gap:10px}
.hsn-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--text-dim);
  transition:border-color .15s ease,color .15s ease;
}
.hsn-btn:hover{border-color:var(--cyan);color:var(--cyan)}

/* ==========================================================================
   定价
   ========================================================================== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;display:flex;flex-direction:column;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--panel);padding:36px 32px;
  transition:border-color .2s ease;
}
.price-card:hover{border-color:#26395f}
.price-card.is-featured{
  border-color:rgba(34,211,238,.5);
  background:linear-gradient(180deg,rgba(34,211,238,.05),transparent 40%),var(--panel);
}
.price-card.is-featured::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.8),transparent);
}
.price-tag{
  position:absolute;top:-12px;right:26px;
  font-family:var(--mono);font-size:10.5px;font-weight:700;letter-spacing:.2em;
  background:var(--grad);color:#031018;border-radius:3px;padding:4px 12px;
}
.price-name{font-size:18px;font-weight:800}
.price-desc{font-size:13px;color:var(--text-faint);margin:8px 0 22px;min-height:42px}
.price-amount{margin-bottom:26px}
.price-amount b{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:34px;font-weight:700;color:var(--text);
}
.price-amount .unit{font-size:13px;color:var(--cyan);font-family:var(--mono);margin-left:6px}
.price-amount span{font-size:12.5px;color:var(--text-faint);margin-left:8px}
.price-list{flex:1;margin-bottom:28px}
.price-list li{
  font-size:13.8px;color:var(--text-dim);padding:8px 0 8px 24px;position:relative;
}
.price-list li::before{
  content:"";position:absolute;left:2px;top:15px;width:12px;height:7px;
  border-left:2px solid var(--mint);border-bottom:2px solid var(--mint);
  transform:rotate(-45deg);
}
/* 透明算例 */
.calc-card{
  margin-top:34px;display:flex;align-items:center;justify-content:center;gap:10px 26px;flex-wrap:wrap;
  border:1px dashed rgba(34,211,238,.3);border-radius:var(--r-lg);
  padding:22px 28px;background:rgba(34,211,238,.03);
}
.calc-card .formula{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(15px,1.6vw,19px);color:var(--text);letter-spacing:.04em;
}
.calc-card .formula b{color:var(--cyan);font-weight:700}
.calc-card .formula .eq{color:var(--mint);font-weight:700}
.calc-note{font-size:12.5px;color:var(--text-faint)}

/* ==========================================================================
   安全隐私四承诺
   ========================================================================== */
.sec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.sec-item{
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--panel);padding:28px 26px;
  transition:border-color .2s ease;
}
.sec-item:hover{border-color:rgba(52,211,153,.4)}
.sec-item .sec-ic{
  width:36px;height:36px;border-radius:9px;margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(52,211,153,.32);background:rgba(52,211,153,.07);color:var(--mint);
}
.sec-item h3{font-size:16px;margin-bottom:8px}
.sec-item p{font-size:13px;line-height:1.8;color:var(--text-dim)}
.sovereign-line{
  margin-top:40px;text-align:center;
  font-size:15px;color:var(--text-dim);letter-spacing:.06em;
}
.sovereign-line b{
  font-weight:700;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}

/* ==========================================================================
   CTA band
   ========================================================================== */
.cta-band{
  position:relative;overflow:hidden;text-align:center;
  border:1px solid var(--border);border-radius:18px;
  background:var(--panel);
  padding:clamp(56px,7vw,88px) 7%;
}
.cta-band .cta-bg{position:absolute;inset:0;z-index:0}
.cta-band .cta-bg img{width:100%;height:100%;object-fit:cover;opacity:.34}
.cta-band .cta-bg::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(60% 90% at 50% 110%,rgba(34,211,238,.16),transparent 65%),
    linear-gradient(180deg,rgba(5,8,16,.75),rgba(5,8,16,.45) 50%,rgba(5,8,16,.8));
}
.cta-band > *:not(.cta-bg){position:relative;z-index:1}
.cta-band h2{font-size:clamp(28px,3.2vw,42px);margin:16px 0 14px}
.cta-band p{color:var(--text-dim);max-width:520px;margin:0 auto 32px}
.cta-band .hero-actions{justify-content:center}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{
  position:relative;border-top:1px solid var(--border);
  background:#04060d;padding:74px 0 0;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:20%;right:20%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),transparent);
}
.foot-main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;
  padding-bottom:54px;
}
.foot-brand img{width:36px;height:36px;margin-bottom:16px}
.foot-brand .fb-name{font-family:var(--mono);font-weight:700;font-size:16px;letter-spacing:.06em;margin-bottom:10px}
.foot-brand p{font-size:13.5px;line-height:1.9;color:var(--text-dim);max-width:300px}
.foot-col h5{
  font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.24em;
  text-transform:uppercase;color:var(--text-faint);margin-bottom:18px;
}
.foot-col ul li{margin-bottom:11px}
.foot-col ul a{font-size:13.8px;color:var(--text-dim);transition:color .15s ease}
.foot-col ul a:hover{color:var(--cyan)}
.foot-contact li{display:flex;gap:10px;font-size:13.3px;color:var(--text-dim);margin-bottom:13px;line-height:1.7}
.foot-contact svg{flex:none;margin-top:4px;color:var(--cyan)}
.foot-bottom{
  border-top:1px solid var(--border);
  padding:22px 0;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.3px;color:var(--text-faint);
}
.foot-bottom a{color:var(--text-faint);transition:color .15s}
.foot-bottom a:hover{color:var(--cyan)}

/* ==========================================================================
   内页 page-hero
   ========================================================================== */
.page-hero{
  position:relative;padding:196px 0 96px;overflow:hidden;
}
.page-hero.has-bg .hero-bg::after{
  background:linear-gradient(180deg,rgba(5,8,16,.86) 0%,rgba(5,8,16,.6) 45%,rgba(5,8,16,.92) 80%,var(--bg) 100%);
}
.page-hero .lead{max-width:600px;margin-top:20px}
.page-hero .hero-actions{margin-top:36px}
.page-hero-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
}
.hero-shot{
  border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 30px 70px rgba(0,0,0,.5);
  position:relative;
}
.hero-shot::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;z-index:2;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),transparent);
}

/* ==========================================================================
   feature-split / feat-list / pill
   ========================================================================== */
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.feature-split.flip > .feature-shot{order:2}
.feature-shot{
  border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 26px 60px rgba(0,0,0,.45);position:relative;
}
.feature-shot::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;z-index:2;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.6),transparent);
}
.feature-shot img{width:100%}
/* 浅色产品截图融入深色主题 */
.hero-shot img,.feature-shot img,.duo-img.shot{filter:brightness(.88) saturate(1.06)}
.feat-list{display:flex;flex-direction:column}
.feat-item{display:flex;gap:22px;padding:20px 0;border-bottom:1px solid var(--border)}
.feat-item:last-child{border-bottom:none}
.feat-num{
  font-family:var(--mono);font-size:12px;font-weight:700;color:var(--cyan);
  letter-spacing:.08em;flex:none;padding-top:3px;
}
.feat-item h4{font-size:16px;margin-bottom:6px}
.feat-item p{font-size:13.5px;line-height:1.8;color:var(--text-dim)}
.pill-row{display:flex;gap:10px;flex-wrap:wrap}
.pill{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
  border:1px solid var(--border);border-radius:100px;padding:7px 16px;
  color:var(--text-dim);background:var(--panel);
  transition:border-color .15s,color .15s;
}
.pill:hover{border-color:var(--cyan);color:var(--cyan)}

/* ==========================================================================
   Tabs / 表格 / 手风琴
   ========================================================================== */
.tabs{display:inline-flex;gap:4px;border:1px solid var(--border);border-radius:var(--r-md);padding:4px;background:var(--panel);margin-bottom:36px}
.tab-btn{
  font-size:13.5px;font-weight:600;letter-spacing:.04em;
  padding:9px 22px;border-radius:4px;color:var(--text-dim);
  transition:background .15s ease,color .15s ease;
}
.tab-btn.active{background:var(--panel-2);color:var(--cyan);box-shadow:inset 0 0 0 1px rgba(34,211,238,.35)}
.tab-panel{display:none}
.tab-panel.active{display:block;animation:tabin .4s var(--ease)}
@keyframes tabin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--r-lg);background:var(--panel)}
.compare-table{width:100%;border-collapse:collapse}
.compare-table th,.compare-table td{
  padding:13px 18px;font-size:13.5px;text-align:left;
  border-bottom:1px solid var(--border);
}
.compare-table thead th{
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);background:var(--panel-2);font-weight:600;
}
.compare-table tbody th{font-weight:600;color:var(--text);white-space:nowrap}
.compare-table td{color:var(--text-dim)}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table .yes{color:var(--mint)}
.compare-table .no{color:var(--text-faint)}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.spec-table{width:100%;border-collapse:collapse}
.spec-table th,.spec-table td{
  padding:12px 18px;font-size:13.5px;text-align:left;
  border-bottom:1px solid var(--border);vertical-align:top;
}
.spec-table th{width:34%;color:var(--text-faint);font-weight:500;white-space:nowrap}
.spec-table td{color:var(--text)}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}
.spec-table .mono{color:var(--cyan);font-size:12.5px}

.acc-item{border:1px solid var(--border);border-radius:var(--r-lg);background:var(--panel);margin-bottom:14px;overflow:hidden}
.acc-head{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:22px 26px;text-align:left;font-size:15.5px;font-weight:700;color:var(--text);
  transition:color .15s;
}
.acc-head:hover{color:var(--cyan)}
.acc-head .acc-ic{
  flex:none;width:26px;height:26px;border:1px solid var(--border);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--cyan);
  transition:transform .3s var(--ease);
}
.acc-item.is-open .acc-ic{transform:rotate(45deg)}
.acc-body{max-height:0;overflow:hidden;transition:max-height .45s var(--ease)}
.acc-body-inner{padding:0 26px 24px;font-size:14px;line-height:1.9;color:var(--text-dim)}

.notice-card{
  border:1px solid rgba(251,191,36,.32);border-left:3px solid var(--amber);
  border-radius:var(--r-md);background:rgba(251,191,36,.05);
  padding:20px 24px;font-size:13.8px;line-height:1.85;color:var(--text-dim);
}
.notice-card b{color:var(--amber);font-weight:700}

/* ==========================================================================
   表单（指南 §3.2）
   ========================================================================== */
.form-field{margin-bottom:20px;position:relative}
.form-field label{
  display:block;font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--text-dim);margin-bottom:9px;
}
.form-field input,.form-field textarea,.form-field select{
  width:100%;height:48px;padding:0 16px;
  background:rgba(5,8,16,.6);
  border:1px solid var(--border);border-radius:var(--r-md);
  color:var(--text);font-size:14.5px;
  caret-color:var(--cyan);
  transition:border-color .15s ease,box-shadow .15s ease;
  outline:none;
}
.form-field textarea{height:auto;min-height:120px;padding:13px 16px;resize:vertical;line-height:1.75}
.form-field select{appearance:none;-webkit-appearance:none}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-faint)}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(34,211,238,.15);
}
/* 聚焦底部扫光线 */
.input-line{position:absolute;left:8px;right:8px;bottom:0;height:1.5px;pointer-events:none}
.input-line::after{
  content:"";display:block;height:100%;width:0;margin:0 auto;
  background:var(--grad);transition:width .35s var(--ease);
}
.form-field input:focus ~ .input-line::after,
.form-field textarea:focus ~ .input-line::after{width:100%}
/* 自动填充修正 */
.form-field input:-webkit-autofill{
  -webkit-box-shadow:0 0 0 60px #0a101d inset;
  -webkit-text-fill-color:var(--text);caret-color:var(--cyan);
  transition:background-color 99999s ease-in-out 0s;
}
/* 雷达节点复选框 */
.radar-check{display:inline-flex;align-items:center;gap:10px;cursor:pointer;user-select:none}
.radar-check input{position:absolute;opacity:0;width:0;height:0}
.radar-check .rc-dot{
  width:18px;height:18px;border-radius:50%;flex:none;
  border:1.5px solid var(--text-faint);
  display:flex;align-items:center;justify-content:center;
  transition:border-color .2s ease;
}
.radar-check .rc-dot::after{
  content:"";width:8px;height:8px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 8px rgba(34,211,238,.9);
  transform:scale(0);transition:transform .35s cubic-bezier(.34,1.8,.5,1);
}
.radar-check input:checked + .rc-dot{border-color:var(--cyan)}
.radar-check input:checked + .rc-dot::after{transform:scale(1)}
.radar-check span{font-size:13px;color:var(--text-dim)}
/* 错误提示：左侧红条 */
.form-err{
  display:none;align-items:center;gap:10px;
  border-left:3px solid var(--red);background:rgba(248,113,113,.08);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  padding:11px 14px;font-size:13px;color:#fca5a5;margin-bottom:18px;
}
.form-err.show{display:flex;animation:tabin .3s var(--ease)}
.pwd-toggle{
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  color:var(--text-faint);padding:6px;transition:color .15s;
}
.pwd-toggle:hover{color:var(--cyan)}

/* ==========================================================================
   登录页（独立页）
   ========================================================================== */
.login-body{min-height:100svh;display:flex;flex-direction:column}
.login-top{
  position:relative;z-index:5;
  height:68px;display:flex;align-items:center;justify-content:space-between;
  width:min(1300px,94%);margin:0 auto;
}
.login-top .back-link{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--text-dim);transition:color .15s;
}
.login-top .back-link:hover{color:var(--cyan)}
.login-wrap{
  position:relative;flex:1;display:grid;
  grid-template-columns:1.05fr .95fr;gap:5vw;align-items:center;
  width:min(1180px,92%);margin:0 auto;
  padding:40px 0 60px;
}
.login-bg{position:fixed;inset:0;z-index:-1;overflow:hidden}
.login-bg img{width:100%;height:100%;object-fit:cover;animation:bgdrift 40s ease-in-out infinite alternate}
.login-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(5,8,16,.88) 0%,rgba(5,8,16,.62) 48%,rgba(5,8,16,.82) 100%);
}
/* 左品牌区 */
.lb-badge{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--text-dim);
  border:1px solid var(--border);border-radius:100px;padding:7px 16px;
  background:rgba(12,18,32,.5);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  margin-bottom:26px;
}
.login-brand h1{
  font-size:clamp(32px,3.4vw,48px);line-height:1.22;margin-bottom:18px;
}
.login-brand > p{color:var(--text-dim);font-size:15px;max-width:480px;line-height:1.9}
.lb-points{margin-top:30px;display:flex;flex-direction:column;gap:2px}
.lb-points li{
  display:flex;align-items:center;gap:13px;padding:10px 0;
  font-size:14px;color:var(--text-dim);
}
.lb-points .mono{color:var(--cyan);font-size:11px;letter-spacing:.14em;min-width:34px}
.lb-points b{color:var(--text);font-weight:700;margin-right:6px}
/* 右登录卡：玻璃 + 顶部光带 */
.login-card{
  position:relative;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:rgba(12,18,32,.66);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:38px 38px 30px;
  box-shadow:0 30px 80px rgba(0,0,0,.5);
  max-width:460px;width:100%;justify-self:end;
}
.login-card::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),transparent);
}
.login-card .lc-head{display:flex;align-items:center;gap:13px;margin-bottom:8px}
.login-card .lc-head img{width:34px;height:34px}
.login-card h2{font-size:21px}
.login-card .lc-sub{font-size:12.5px;color:var(--text-faint);margin-bottom:24px}
.login-tabs{
  display:flex;border:1px solid var(--border);border-radius:var(--r-md);
  padding:4px;background:rgba(5,8,16,.55);margin-bottom:24px;
}
.login-tabs .tab-btn{flex:1;text-align:center;justify-content:center;font-size:13px}
.login-meta{
  display:flex;justify-content:space-between;align-items:center;
  margin:4px 0 22px;
}
.login-meta a{font-size:12.5px;color:var(--cyan);transition:color .15s}
.login-meta a:hover{color:#7be7f7}
.login-card .lc-divider{
  display:flex;align-items:center;gap:14px;margin:24px 0 16px;
  font-size:11px;color:var(--text-faint);font-family:var(--mono);letter-spacing:.14em;
}
.login-card .lc-divider::before,.login-card .lc-divider::after{
  content:"";flex:1;height:1px;background:var(--border);
}
.login-foot-note{
  margin-top:22px;padding-top:18px;border-top:1px solid var(--border);
  font-size:11.5px;color:var(--text-faint);line-height:1.8;text-align:center;
}
.login-foot-note a{color:var(--text-dim)}
.login-foot-note a:hover{color:var(--cyan)}
.pv-hint{
  display:none;margin-top:14px;font-family:var(--mono);font-size:11.5px;
  color:var(--mint);word-break:break-all;line-height:1.7;
}
.pv-hint.show{display:block;animation:tabin .3s var(--ease)}
.pv-hint a{color:var(--cyan);text-decoration:underline}
.login-copy{
  position:relative;z-index:5;text-align:center;padding:18px 0 22px;
  font-size:11.5px;color:var(--text-faint);
  border-top:1px solid rgba(26,37,64,.6);
}

/* ==========================================================================
   Toast / 回到顶部
   ========================================================================== */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);
  z-index:300;max-width:min(480px,90vw);
  background:rgba(12,18,32,.92);border:1px solid rgba(34,211,238,.4);
  border-radius:var(--r-md);padding:13px 22px;
  font-size:13.5px;color:var(--text);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:0 16px 40px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transition:all .35s var(--ease);
  display:flex;align-items:center;gap:10px;
}
.toast.show{opacity:1;visibility:visible;transform:translate(-50%,0)}
.scroll-top{
  position:fixed;right:26px;bottom:26px;z-index:110;
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--border);background:rgba(12,18,32,.85);
  color:var(--text-dim);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:all .3s ease;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.scroll-top.show{opacity:1;visibility:visible}
.scroll-top:hover{border-color:var(--cyan);color:var(--cyan)}

/* ==========================================================================
   入场动效（指南 §四）
   ========================================================================== */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s var(--ease),transform .65s var(--ease)}
.reveal.reveal-d1{transition-delay:.06s}
.reveal.reveal-d2{transition-delay:.12s}
.reveal.reveal-d3{transition-delay:.18s}
.reveal.is-in{opacity:1;transform:none}
.clip-lines .cl-line{display:block;overflow:hidden}
.clip-lines .cl-inner{
  display:inline-block;transform:translateY(112%);
  transition:transform .8s var(--ease);
}
.clip-lines .cl-line:nth-child(2) .cl-inner{transition-delay:.1s}
.clip-lines.is-in .cl-inner{transform:none}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1100px){
  .hero-inner{grid-template-columns:1fr .9fr;gap:40px}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .sec-grid{grid-template-columns:repeat(2,1fr)}
  .flow-steps{grid-template-columns:repeat(2,1fr)}
  .flow-step{border-left:1px solid var(--border);border-top:none;border-radius:0!important}
  .flow-step .fs-arrow{display:none}
  .flow-step:nth-child(-n+2){border-top:1px solid var(--border)}
  .foot-main{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:960px){
  .site-nav{display:none}
  .menu-toggle{display:flex}
  .header-cta .btn{display:none}
  .section{padding:76px 0}
  .hero{padding-top:120px}
  .hero-inner{grid-template-columns:1fr;gap:48px;padding-bottom:52px}
  .hero .lead{max-width:none}
  .mini-dash{max-width:520px}
  .telemetry{flex-wrap:wrap}
  .t-cell{flex:1 1 42%;border-top:1px solid var(--border)}
  .t-cell:nth-child(-n+2){border-top:none}
  .t-cell:nth-child(odd){border-left:none}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(odd){border-left:none}
  .stat-cell{border-top:1px solid var(--border)}
  .stat-cell:nth-child(-n+2){border-top:none}
  .duo-grid{grid-template-columns:1fr}
  .duo-card h3,.duo-card p,.duo-list,.duo-foot{max-width:none}
  .duo-img{position:relative;right:auto;bottom:auto;width:70%;max-width:300px;margin:26px auto 0}
  .duo-img.shot{position:relative;right:auto;bottom:auto;width:100%;max-width:420px;margin:26px 0 0}
  .duo-card{min-height:0}
  .sku-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .api-wrap{grid-template-columns:1fr;gap:40px}
  .feature-split{grid-template-columns:1fr;gap:40px}
  .feature-split.flip > .feature-shot{order:0}
  .spec-grid{grid-template-columns:1fr}
  .page-hero{padding:150px 0 70px}
  .page-hero-grid{grid-template-columns:1fr;gap:44px}
  /* 登录页 */
  .login-wrap{grid-template-columns:1fr;gap:44px;padding:24px 0 48px}
  .login-card{justify-self:center;max-width:480px}
  .login-brand h1{font-size:30px}
  .login-brand .telemetry{max-width:520px}
}
@media (max-width:560px){
  body{font-size:14.5px}
  .flow-steps{grid-template-columns:1fr}
  .flow-step{border-top:1px solid var(--border)}
  .cap-grid{grid-template-columns:1fr}
  .sec-grid{grid-template-columns:1fr}
  .foot-main{grid-template-columns:1fr}
  .foot-bottom{justify-content:center;text-align:center}
  .login-card{padding:30px 24px 24px}
  .sku-foot{flex-direction:column;align-items:flex-start}
  .hero-actions .btn{width:100%;justify-content:center}
  .telemetry{flex-direction:column}
  .t-cell{border-left:none;border-top:1px solid var(--border)}
  .t-cell:first-child{border-top:none}
}

/* ==========================================================================
   无障碍：减弱动效
   ========================================================================== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .clip-lines .cl-inner{transform:none}
}

/* ==========================================================================
   关于页 / 联系区块
   ========================================================================== */
.contact-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:48px;align-items:start}
.contact-info-item{display:flex;gap:16px;padding:19px 0;border-bottom:1px solid var(--border)}
.contact-info-item:first-child{padding-top:6px}
.contact-info-item svg{color:var(--cyan);flex:none;margin-top:4px}
.contact-info-item b{display:block;font-size:15px;margin-bottom:5px;font-weight:700}
.contact-info-item span{font-size:13.5px;color:var(--text-dim);line-height:1.75}
.contact-info-item a{color:var(--cyan)}
.form-card{
  position:relative;overflow:hidden;
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--panel);padding:36px 34px;
}
.form-card::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.6),transparent);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
@media (max-width:960px){
  .contact-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .cap-grid[style]{grid-template-columns:1fr!important}
}

/* ==========================================================================
   Hero 产品轮播（遥测看板 / 网关 / 平台 交叉淡入）
   ========================================================================== */
.hero-carousel{position:relative}
.hc-slide{transition:opacity .9s var(--ease)}
.hc-slide:not(:first-child){
  position:absolute;inset:0;opacity:0;pointer-events:none;
}
.hc-slide.active{opacity:1;pointer-events:auto}
.hc-slide img{
  width:100%;height:100%;object-fit:cover;display:block;
  border-radius:var(--r-lg);border:1px solid var(--border);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
  filter:brightness(.92) saturate(1.05);
}
.hc-cap{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;
  color:var(--text-dim);background:rgba(5,8,16,.72);
  border:1px solid var(--border);border-radius:99px;padding:5px 12px;
  backdrop-filter:blur(6px);
}
.hc-dots{
  position:absolute;left:50%;bottom:-26px;transform:translateX(-50%);
  display:flex;gap:8px;z-index:6;
}
.hc-dot{
  width:18px;height:3px;border-radius:2px;border:0;padding:0;cursor:pointer;
  background:var(--border);transition:background .3s,width .3s;
}
.hc-dot.active{background:linear-gradient(90deg,var(--cyan),var(--mint));width:28px}
@media (prefers-reduced-motion: reduce){
  .hc-slide{transition:none}
}