/* =========================================================
   冰擎机器人 · 官方站点样式
   ========================================================= */

:root{
  --bg:#07090D;
  --bg-alt:#0A0E15;
  --panel:rgba(255,255,255,.026);
  --panel-2:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.085);
  --line-strong:rgba(255,255,255,.16);
  --ink:#E9F1F8;
  --muted:#94A1B2;
  --muted-2:#6B7A8B;
  --accent:#4AD9FF;
  --accent-soft:rgba(74,217,255,.13);
  --warm:#FFD2A1;
  --radius:3px;
  --wrap:1260px;
  --ease:cubic-bezier(.16,.84,.3,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Inter","HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:15px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:1;
  opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
::selection{background:rgba(74,217,255,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#05070A}
::-webkit-scrollbar-thumb{background:#1D2733;border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:#2C3B4B}

.mono{font-family:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;font-feature-settings:"tnum";letter-spacing:.02em}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 40px}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  transition:background .4s var(--ease),border-color .4s var(--ease),height .4s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,9,13,.82);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;gap:40px;height:84px;transition:height .4s var(--ease)}
.is-scrolled .header-inner{height:68px}

.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:26px;height:29px;color:var(--accent);flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;font-weight:600;letter-spacing:.06em}
.brand-text i{font-size:8.5px;font-style:normal;letter-spacing:.19em;color:var(--muted-2);margin-top:3px}

.nav{display:flex;gap:34px;margin-left:auto}
.nav a{position:relative;font-size:14px;color:var(--muted);transition:color .3s}
.nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-7px;height:1px;
  background:var(--accent);transition:right .35s var(--ease);
}
.nav a:hover{color:var(--ink)}
.nav a.is-active{color:var(--ink)}
.nav a.is-active::after{right:0}
.nav a:hover::after{right:0}

.header-actions{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav + .header-actions{margin-left:0}
.tel{display:flex;align-items:center;gap:8px;font-family:"JetBrains Mono",Consolas,monospace;font-size:12px;color:var(--muted);letter-spacing:.04em}
.tel:hover{color:var(--ink)}
.dot{width:5px;height:5px;border-radius:50%;background:#4BE3A0;box-shadow:0 0 0 0 rgba(75,227,160,.6);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(75,227,160,.55)}70%{box-shadow:0 0 0 8px rgba(75,227,160,0)}100%{box-shadow:0 0 0 0 rgba(75,227,160,0)}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border:1px solid var(--line-strong);border-radius:var(--radius);
  font-size:14px;letter-spacing:.02em;color:var(--ink);
  transition:transform .35s var(--ease),background .3s,border-color .3s,color .3s,box-shadow .35s;
  white-space:nowrap;
}
.btn svg{transition:transform .35s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#04131A;font-weight:600}
.btn-primary:hover{background:#7BE6FF;border-color:#7BE6FF;box-shadow:0 12px 40px -12px rgba(74,217,255,.7)}
.btn-ghost{color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--panel-2);border-color:var(--line-strong)}
.btn-sm{height:38px;padding:0 18px;font-size:13px}
.btn-block{width:100%}

.burger{display:none;width:34px;height:34px;position:relative}
.burger span{position:absolute;left:7px;right:7px;height:1.5px;background:var(--ink);transition:.3s var(--ease)}
.burger span:first-child{top:13px}
.burger span:last-child{top:20px}
.burger.is-open span:first-child{transform:translateY(3.5px) rotate(45deg)}
.burger.is-open span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.mobile-menu{
  position:fixed;inset:0;z-index:55;background:rgba(7,9,13,.97);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  display:flex;flex-direction:column;justify-content:center;gap:6px;padding:0 40px;
  opacity:0;pointer-events:none;transition:opacity .4s var(--ease);
}
.mobile-menu.is-open{opacity:1;pointer-events:auto}
.mobile-menu a{font-size:27px;padding:12px 0;border-bottom:1px solid var(--line);color:var(--ink)}
.mobile-menu .mm-cta{color:var(--accent);border-bottom:none;margin-top:18px;font-size:18px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:150px 0 0;overflow:hidden}
.hero-glow{
  position:absolute;top:-15%;right:-8%;width:60vw;height:60vw;max-width:900px;max-height:900px;
  background:radial-gradient(circle,rgba(74,217,255,.14),rgba(74,217,255,.03) 45%,transparent 68%);
  filter:blur(20px);pointer-events:none;
}
.hero-glow::after{
  content:"";position:absolute;left:-40%;top:30%;width:70%;height:70%;
  background:radial-gradient(circle,rgba(255,210,161,.09),transparent 60%);
  filter:blur(40px);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.78fr);
  gap:70px;align-items:center;padding-bottom:78px;
}
.eyebrow{display:flex;align-items:center;gap:12px;font-family:"JetBrains Mono",Consolas,monospace;font-size:11px;letter-spacing:.22em;color:var(--muted);margin-bottom:30px}
.eyebrow .line{width:36px;height:1px;background:var(--accent);opacity:.7}

.hero h1{
  font-size:clamp(44px,5.6vw,80px);
  line-height:1.05;font-weight:600;letter-spacing:-.035em;
  margin-bottom:30px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(96deg,#4AD9FF 0%,#B7F0FF 45%,#FFD2A1 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{max-width:520px;font-size:15.5px;line-height:1.85;color:var(--muted);margin-bottom:38px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:64px}

.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);padding-top:24px}
.hero-stats > div{padding-right:18px;border-right:1px solid var(--line)}
.hero-stats > div:last-child{border-right:none}
.hero-stats dt{font-family:"JetBrains Mono",Consolas,monospace;font-size:26px;font-weight:500;letter-spacing:-.02em;color:var(--ink)}
.hero-stats dd{font-size:11.5px;color:var(--muted-2);margin-top:6px;letter-spacing:.04em}

.hero-visual{position:relative}
.hero-frame{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:4px;background:#0B0F16}
.hero-frame img{width:100%;height:auto;filter:saturate(1.03) contrast(1.02)}
.hero-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,9,13,0) 55%,rgba(7,9,13,.55) 100%);
}
.hero-scan{
  position:absolute;left:0;right:0;height:90px;z-index:2;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(74,217,255,.12),transparent);
  animation:scan 6.5s ease-in-out infinite;
}
@keyframes scan{0%{top:-20%;opacity:0}25%{opacity:1}75%{opacity:1}100%{top:105%;opacity:0}}

.float-card{
  position:absolute;left:-28px;bottom:44px;z-index:3;
  width:196px;padding:14px 16px;
  background:rgba(11,15,22,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line-strong);border-radius:3px;
  box-shadow:0 24px 60px -20px rgba(0,0,0,.8);
}
.fc-top{display:flex;align-items:center;gap:7px;font-size:10.5px;letter-spacing:.1em;color:var(--muted);margin-bottom:12px;font-family:"JetBrains Mono",Consolas,monospace}
.pulse{width:5px;height:5px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}
.fc-row{display:flex;justify-content:space-between;align-items:baseline;font-size:11.5px;color:var(--muted);margin-bottom:6px}
.fc-row b{font-size:13px;color:var(--ink);font-weight:500}
.fc-bar{height:2px;background:rgba(255,255,255,.08);margin-top:10px;overflow:hidden}
.fc-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--warm))}
.hero-visual figcaption{margin-top:14px;font-size:11px;color:var(--muted-2);letter-spacing:.08em}

/* marquee */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;padding:16px 0;background:rgba(255,255,255,.012)}
.marquee-track{display:flex;gap:0;width:max-content;animation:marquee 42s linear infinite}
.marquee-track span{
  font-family:"JetBrains Mono",Consolas,monospace;font-size:11px;letter-spacing:.18em;color:var(--muted-2);
  padding:0 34px;position:relative;white-space:nowrap;
}
.marquee-track span::after{content:"";position:absolute;right:0;top:50%;width:3px;height:3px;background:var(--accent);opacity:.5;border-radius:50%;transform:translateY(-50%)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- 通用 section ---------- */
.section{padding:120px 0;position:relative}
.section-alt{background:linear-gradient(180deg,rgba(255,255,255,.018),rgba(255,255,255,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.sec-head{
  display:grid;grid-template-columns:150px minmax(0,1fr) 330px;gap:48px;
  align-items:start;margin-bottom:64px;
}
.idx{font-size:10.5px;letter-spacing:.2em;color:var(--muted-2);padding-top:12px;white-space:nowrap}
.sec-head h2{font-size:clamp(30px,3.4vw,44px);line-height:1.22;letter-spacing:-.03em;font-weight:600}
.lead{font-size:14.5px;line-height:1.9;color:var(--muted);padding-top:6px}

/* ---------- 产品 ---------- */
.lineup{position:relative;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:#0A0D13}
.lineup img{width:100%;height:auto;opacity:.95}
.lineup-tags{
  position:absolute;left:0;right:0;bottom:0;
  display:flex;justify-content:space-between;gap:20px;
  padding:22px 6% 20px;
  background:linear-gradient(180deg,transparent,rgba(6,8,12,.92) 55%);
}
.lineup-tags span{font-family:"JetBrains Mono",Consolas,monospace;font-size:10.5px;letter-spacing:.14em;color:var(--muted)}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}
.card{
  position:relative;display:flex;flex-direction:column;
  padding:34px 32px 30px;background:var(--panel);border:1px solid var(--line);border-radius:4px;
  transition:transform .45s var(--ease),border-color .4s,background .4s;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(74,217,255,.7),transparent);
  opacity:0;transition:opacity .4s;
}
.card:hover{transform:translateY(-6px);border-color:var(--line-strong);background:var(--panel-2)}
.card:hover::before{opacity:1}
.card-feature{background:linear-gradient(170deg,rgba(74,217,255,.075),rgba(255,255,255,.02) 45%)}
.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}
.card-tag{font-family:"JetBrains Mono",Consolas,monospace;font-size:9.5px;letter-spacing:.2em;color:var(--accent);border:1px solid rgba(74,217,255,.3);padding:4px 8px;border-radius:2px}
.card-id{font-size:11px;color:var(--muted-2)}
.card h3{font-size:36px;line-height:1;font-weight:500;letter-spacing:-.02em;margin-bottom:10px}
.card-sub{font-size:13px;color:var(--muted);letter-spacing:.02em;margin-bottom:16px}
.card-desc{font-size:13.5px;line-height:1.8;color:var(--muted);margin-bottom:26px}
.card-specs{margin-top:auto}
.card-specs li{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0;border-top:1px solid var(--line);font-size:12.5px}
.card-specs li span{color:var(--muted-2)}
.card-specs li b{font-family:"JetBrains Mono",Consolas,monospace;font-weight:400;color:var(--ink);font-size:12.5px}
.card-link{display:inline-flex;align-items:center;gap:8px;margin-top:24px;font-size:13px;color:var(--ink)}
.card-link span{transition:transform .35s var(--ease);color:var(--accent)}
.card:hover .card-link span{transform:translateX(5px)}

.spec-table-wrap{margin-top:24px;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--panel)}
.table-head{display:flex;justify-content:space-between;align-items:center;padding:22px 28px;border-bottom:1px solid var(--line)}
.table-head h4{font-size:14px;font-weight:500;letter-spacing:.03em}
.hint{font-size:10px;letter-spacing:.16em;color:var(--muted-2)}
.table-scroll{overflow-x:auto}
.spec-table{width:100%;min-width:760px;border-collapse:collapse}
.spec-table th,.spec-table td{padding:15px 28px;text-align:left;border-bottom:1px solid var(--line);font-size:13px}
.spec-table th{font-family:"JetBrains Mono",Consolas,monospace;font-size:10px;letter-spacing:.16em;color:#8C9AAB;font-weight:400;text-transform:uppercase;background:rgba(255,255,255,.02)}
.spec-table td:first-child{color:#96A3B3}
.spec-table td{font-family:"JetBrains Mono",Consolas,monospace;font-size:12.5px;color:#D6E2EE}
.spec-table tbody tr{transition:background .25s}
.spec-table tbody tr:hover{background:rgba(74,217,255,.04)}
.spec-table tr:last-child td{border-bottom:none}

/* ---------- 技术 bento ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.bento-item{
  position:relative;display:flex;flex-direction:column;
  padding:32px;min-height:270px;
  background:var(--panel);border:1px solid var(--line);border-radius:4px;
  overflow:hidden;transition:border-color .4s,background .4s,transform .5s var(--ease);
}
.bento-item:hover{border-color:rgba(74,217,255,.28);background:rgba(74,217,255,.035);transform:translateY(-3px)}
.bento-item:nth-child(1){grid-column:span 3}
.bento-item:nth-child(2){grid-column:span 3}
.bento-item:nth-child(3){grid-column:span 2}
.bento-item:nth-child(4){grid-column:span 4}
.bento-item:nth-child(5){grid-column:span 3}
.bento-item:nth-child(6){grid-column:span 3}
.bento-num{font-size:10px;letter-spacing:.18em;color:var(--accent);opacity:.65;margin-bottom:auto}
.bento-item h3{font-size:19px;font-weight:500;letter-spacing:-.01em;margin:28px 0 12px}
.bento-item p{font-size:13.5px;line-height:1.8;color:var(--muted);max-width:420px}
.mini-stat{display:flex;align-items:baseline;gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.mini-stat b{font-size:24px;font-weight:400;color:var(--accent)}
.mini-stat span{font-size:11px;color:var(--muted-2);letter-spacing:.06em}

.arm-diagram{position:absolute;right:20px;bottom:18px;width:190px;opacity:.9;pointer-events:none}
.arm-diagram svg{width:100%;height:auto;display:block}
.b-arm p{max-width:calc(100% - 178px)}
.diagram-label{display:block;text-align:right;margin-top:2px;font-size:8px;letter-spacing:.12em;color:var(--muted-2)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chips li{font-size:11.5px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:6px 13px}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:34px}
.flow li{position:relative;padding-top:34px;border-top:1px solid var(--line)}
.flow li::before{
  content:"";position:absolute;top:-4px;left:0;width:7px;height:7px;border-radius:50%;
  background:var(--bg);border:1px solid var(--accent);
}
.flow li::after{
  content:"";position:absolute;top:0;left:0;width:0;height:1px;background:var(--accent);
  transition:width .9s var(--ease) .2s;opacity:.55;
}
.flow li.in::after{width:100%}
.flow-idx{font-size:10px;letter-spacing:.2em;color:var(--accent);opacity:.7}
.flow h3{font-size:19px;font-weight:500;margin:14px 0 12px;letter-spacing:-.01em}
.flow p{font-size:13px;line-height:1.8;color:var(--muted);margin-bottom:22px}
.flow-time{display:block;font-size:10.5px;color:var(--muted-2);letter-spacing:.12em}

/* ---------- 解决方案 ---------- */
.solution{display:grid;grid-template-columns:200px minmax(0,1fr);gap:36px;align-items:start}
.solution-tabs{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.sol-tab{
  display:flex;align-items:center;gap:14px;
  padding:20px 4px;border-bottom:1px solid var(--line);
  color:var(--muted);font-size:14.5px;text-align:left;
  transition:color .3s,padding-left .3s var(--ease);
}
.sol-tab .mono{font-size:10px;letter-spacing:.14em;color:var(--muted-2);transition:color .3s}
.sol-tab:hover{color:var(--ink);padding-left:10px}
.sol-tab.is-active{color:var(--accent);padding-left:10px}
.sol-tab.is-active .mono{color:var(--accent);opacity:.7}

.solution-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:40px;align-items:center}
.solution-visual{position:relative;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:#0A0D13}
.solution-visual img{width:100%;height:400px;object-fit:cover;transition:opacity .45s,transform 6s linear}
.solution-visual img.swap{opacity:.2}
.sol-caption{position:absolute;left:16px;bottom:14px;font-family:"JetBrains Mono",Consolas,monospace;font-size:10px;letter-spacing:.12em;color:#C9D6E3;background:rgba(6,8,12,.6);padding:5px 10px;border-radius:2px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.solution-panel h3{font-size:24px;line-height:1.45;font-weight:500;letter-spacing:-.02em;margin-bottom:18px}
.solution-panel > p{font-size:14px;line-height:1.9;color:var(--muted);margin-bottom:26px}
.sol-points li{position:relative;padding-left:20px;font-size:13.5px;color:var(--muted);margin-bottom:11px;line-height:1.75}
.sol-points li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;background:var(--accent);opacity:.75}
.sol-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.sol-metrics b{display:block;font-size:27px;font-weight:400;color:var(--ink);letter-spacing:-.02em}
.sol-metrics span{font-size:11px;color:var(--muted-2)}

/* ---------- 工厂 ---------- */
.factory{background:linear-gradient(180deg,rgba(255,255,255,0),rgba(74,217,255,.022))}
.factory-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);gap:48px;align-items:stretch}
.factory-img{position:relative;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:#0A0D13}
.factory-img img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.factory-img figcaption{position:absolute;left:18px;bottom:16px}
.factory-img figcaption span{font-size:10px;letter-spacing:.16em;color:#C9D6E3;background:rgba(6,8,12,.55);padding:5px 10px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.factory-stats{display:grid;grid-template-columns:1fr 1fr;gap:0 28px;align-content:space-between;padding:4px 0}
.fs{padding:22px 0;border-top:1px solid var(--line)}
.fs b{display:block;font-size:34px;font-weight:400;letter-spacing:-.03em;color:var(--ink);line-height:1.1}
.fs span{font-size:11.5px;color:var(--muted-2);letter-spacing:.04em}

.quality{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:64px;padding-top:34px;border-top:1px solid var(--line)}
.q-item .mono{font-size:10px;letter-spacing:.18em;color:var(--accent);opacity:.7}
.q-item h4{font-size:14.5px;font-weight:500;margin:12px 0 10px}
.q-item p{font-size:12.5px;line-height:1.8;color:var(--muted)}

/* ---------- 证言 ---------- */
.quote-section{padding:110px 0;border-top:1px solid var(--line)}
.quote{max-width:880px;margin:0 auto;text-align:center}
.qmark{width:34px;color:var(--accent);opacity:.45;margin-bottom:26px}
.quote blockquote{font-size:clamp(20px,2.3vw,28px);line-height:1.7;letter-spacing:-.015em;color:#DCE7F1;font-weight:400}
.quote-by{margin-top:30px;display:flex;justify-content:center;align-items:baseline;gap:12px;font-size:13px;color:var(--muted)}
.quote-by b{color:var(--ink);font-weight:500}
.quote-by span{color:var(--muted-2);font-size:12px}

.logos{display:flex;flex-wrap:wrap;justify-content:center;gap:22px 54px;margin-top:70px;padding-top:44px;border-top:1px solid var(--line)}
.logos span{font-size:14.5px;letter-spacing:.12em;color:#5C6878;transition:color .3s}
.logos span:hover{color:#A9B7C6}

/* ---------- 服务 ---------- */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.svc{padding:32px 28px;border:1px solid var(--line);border-radius:4px;background:var(--panel);transition:border-color .4s,background .4s,transform .45s var(--ease)}
.svc:hover{border-color:rgba(74,217,255,.25);background:var(--panel-2);transform:translateY(-4px)}
.svc-icon{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:2px;color:var(--accent);margin-bottom:22px}
.svc-icon svg{width:20px;height:20px}
.svc h3{font-size:16px;font-weight:500;margin-bottom:12px}
.svc p{font-size:13px;line-height:1.8;color:var(--muted)}

/* ---------- 联系 ---------- */
.contact{padding-bottom:130px}
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:90px;align-items:start}
.contact-copy h2{font-size:clamp(30px,3.4vw,46px);line-height:1.22;letter-spacing:-.03em;font-weight:600;margin:28px 0 22px}
.contact-copy .lead{max-width:460px}
.contact-list{margin-top:48px}
.contact-list li{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:baseline;padding:18px 0;border-top:1px solid var(--line)}
.contact-list li:last-child{border-bottom:1px solid var(--line)}
.contact-list .mono{font-size:10px;letter-spacing:.16em;color:var(--muted-2)}
.contact-list a,.contact-list p{font-size:14px;color:var(--ink)}
.contact-list a:hover{color:var(--accent)}

.form{padding:34px;background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.015));border:1px solid var(--line);border-radius:4px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
form label{display:block;margin-bottom:14px;font-size:11px;letter-spacing:.1em;color:var(--muted-2)}
form input,form select,form textarea{
  display:block;width:100%;margin-top:7px;
  background:rgba(0,0,0,.28);border:1px solid var(--line);border-radius:2px;
  padding:13px 14px;color:var(--ink);font-size:14px;font-family:inherit;
  transition:border-color .25s,background .25s,box-shadow .25s;
  -webkit-appearance:none;appearance:none;
}
form input::placeholder,form textarea::placeholder{color:#4C5866}
form input:focus,form select:focus,form textarea:focus{
  outline:none;border-color:rgba(74,217,255,.55);background:rgba(74,217,255,.04);
  box-shadow:0 0 0 3px rgba(74,217,255,.08);
}
form select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238894A4' stroke-width='1.4' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}
form select option{background:#0D1219;color:var(--ink)}
form textarea{resize:vertical;min-height:88px}
.form .btn{margin-top:10px}
.form-note{font-size:11px;line-height:1.7;color:var(--muted-2);margin-top:14px}
.form.is-invalid input[name="name"],.form.is-invalid input[name="phone"]{border-color:rgba(255,120,110,.6)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:#05070A;padding:70px 0 28px}
.footer-top{display:grid;grid-template-columns:1.1fr 1.4fr;gap:60px}
.footer-brand p{margin-top:20px;font-size:12.5px;line-height:1.9;color:var(--muted-2)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.footer-cols h5{font-size:11px;letter-spacing:.16em;color:var(--muted-2);font-weight:400;margin-bottom:18px;font-family:"JetBrains Mono",Consolas,monospace}
.footer-cols a{display:block;font-size:13px;color:var(--muted);padding:5px 0;transition:color .25s}
.footer-cols a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;margin-top:56px;padding-top:24px;border-top:1px solid var(--line);font-size:11.5px;color:var(--muted-2)}
.footer-bottom .mono{letter-spacing:.08em}
.fb-links{display:flex;gap:22px}
.fb-links a:hover{color:var(--ink)}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:40px;transform:translate(-50%,24px);
  background:rgba(12,17,24,.95);border:1px solid rgba(74,217,255,.4);
  color:var(--ink);font-size:13px;padding:14px 24px;border-radius:2px;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:0 20px 60px -20px rgba(0,0,0,.9);
  opacity:0;pointer-events:none;transition:.45s var(--ease);z-index:80;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- 动效 ---------- */
html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease) var(--d,0s),transform .9s var(--ease) var(--d,0s)}
html.js .reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .wrap{padding:0 32px}
  .nav{gap:24px}
  .header-actions{gap:16px}
  .hero-grid{gap:48px}
  .sec-head{grid-template-columns:110px minmax(0,1fr) 300px;gap:34px}
  .bento-item{padding:26px}
}
@media (max-width:1024px){
  .nav,.tel{display:none}
  .burger{display:block}
  .header-actions{margin-left:auto}
  .hero{padding-top:130px}
  .hero-grid{grid-template-columns:1fr;gap:46px;padding-bottom:60px}
  .hero-visual{max-width:560px}
  .float-card{left:auto;right:16px;bottom:56px}
  .hero-stats{grid-template-columns:repeat(4,1fr)}
  .sec-head{grid-template-columns:1fr;gap:20px;margin-bottom:44px}
  .sec-head .idx{padding-top:0}
  .lead{max-width:600px;padding-top:0}
  .cards{grid-template-columns:1fr;gap:14px}
  .card{padding:28px}
  .card h3{font-size:30px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-item:nth-child(n){grid-column:span 1}
  .bento-item:nth-child(1),.bento-item:nth-child(4){grid-column:span 2}
  .flow{grid-template-columns:1fr 1fr;gap:32px 26px}
  .solution{grid-template-columns:1fr;gap:30px}
  .solution-tabs{flex-direction:row;flex-wrap:wrap;border-top:none;gap:8px}
  .sol-tab{border:1px solid var(--line);padding:10px 14px;border-radius:2px;font-size:13px}
  .sol-tab.is-active{border-color:rgba(74,217,255,.4);background:rgba(74,217,255,.06);padding-left:14px}
  .solution-body{grid-template-columns:1fr;gap:30px}
  .solution-visual img{height:330px}
  .factory-grid{grid-template-columns:1fr;gap:36px}
  .factory-img img{aspect-ratio:16/9}
  .quality{grid-template-columns:1fr 1fr;gap:26px}
  .service-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr;gap:48px}
  .footer-top{grid-template-columns:1fr;gap:44px}
}
@media (max-width:680px){
  .wrap{padding:0 20px}
  .section{padding:78px 0}
  .hero{padding-top:112px}
  .hero h1{font-size:clamp(36px,10vw,48px)}
  .hero-sub{font-size:14.5px}
  .hero-cta{margin-bottom:44px}
  .hero-cta .btn{flex:1 1 100%}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px 0;padding-top:20px}
  .hero-stats > div:nth-child(2){border-right:none}
  .hero-stats > div:nth-child(n+3){border-top:1px solid var(--line);padding-top:16px;padding-right:12px}
  .hero-stats dt{font-size:22px}
  .float-card{width:170px;right:10px;bottom:44px;padding:12px 13px;left:auto}
  .marquee{padding:13px 0}
  .bento{grid-template-columns:1fr}
  .bento-item:nth-child(n){grid-column:span 1;min-height:0;padding:26px 24px}
  .bento-item h3{margin-top:22px}
  .arm-diagram{display:none}
  .b-arm p{max-width:100%}
  .solution-visual img{height:250px}
  .solution-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .sol-tab{justify-content:flex-start;padding:12px 10px;font-size:13px}
  .sol-tab.is-active{padding-left:10px}
  .flow li{padding-bottom:6px}
  .table-scroll{-webkit-mask-image:linear-gradient(90deg,#000 82%,transparent);mask-image:linear-gradient(90deg,#000 82%,transparent)}
  .flow{grid-template-columns:1fr;gap:26px}
  .quality{grid-template-columns:1fr;gap:22px}
  .service-grid{grid-template-columns:1fr}
  .sol-metrics{gap:8px}
  .sol-metrics b{font-size:22px}
  .form{padding:24px 20px}
  .form-row{grid-template-columns:1fr;gap:0}
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .quote blockquote{font-size:18px}
  .table-head{padding:18px 20px}
  .spec-table th,.spec-table td{padding:13px 20px}
  .contact-list li{grid-template-columns:1fr;gap:6px}
  .logos{gap:16px 30px;margin-top:48px}
  .logos span{font-size:13px}
}