/* ==========================================================================
   云智Cloud · 官网样式
   亮色科技风：白底 + 柔光渐变 + 玻璃拟态 + 克制的动效
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root{
  --ink:#0b1220;
  --ink-2:#1b2436;
  --sub:#5b6678;
  --sub-2:#7d8798;
  --mute:#9aa4b6;
  --line:#e7ecf5;
  --line-2:#eff3f9;
  --bg:#ffffff;
  --bg-soft:#f6f8fc;
  --bg-soft-2:#f0f4fb;
  --brand:#2f6bff;
  --brand-2:#06b6d4;
  --brand-3:#8b5cf6;
  --ok:#0d9f6e;
  --warn:#d97706;
  --err:#e5484d;
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-xl:30px;
  --sh-1:0 1px 2px rgba(16,32,64,.04),0 4px 14px rgba(16,32,64,.05);
  --sh-2:0 2px 6px rgba(16,32,64,.05),0 16px 40px rgba(16,32,64,.08);
  --sh-3:0 30px 80px rgba(16,32,64,.14);
  --ease:cubic-bezier(.16,1,.3,1);
  --ease-2:cubic-bezier(.22,.61,.36,1);
  --nav-h:66px;
  --max:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:86px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
html{overflow-x:hidden}
img{max-width:100%;display:block}

/* 网格子项允许收缩：内部有固定宽度的模拟窗口时，列宽不应被撑开 */
.sc-inner > *,.pd-grid > *,.about-grid > *,.pay-wrap > *,.prod-grid > *,
.svc-grid > *,.case-grid > *,.flow > *{min-width:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:rgba(47,107,255,.16)}

h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
code{font-family:"SF Mono",Consolas,Menlo,monospace;font-size:.9em;background:var(--bg-soft-2);padding:2px 6px;border-radius:6px}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.sec{position:relative;padding:110px 0}
.sec-tight{padding:76px 0}
.center{text-align:center}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#d3dbe8;border-radius:20px;border:3px solid #fff}
::-webkit-scrollbar-thumb:hover{background:#bcc7d8}

/* ---------- 滚动进度 ---------- */
.progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:200;
  background:linear-gradient(90deg,var(--brand),var(--brand-2),var(--brand-3));transition:width .1s linear}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  display:flex;align-items:center;transition:background .35s var(--ease),box-shadow .35s var(--ease),border-color .35s}
.nav::after{content:'';position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .35s;
  background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);
  border-bottom:1px solid rgba(11,18,32,.06)}
.nav.solid::after{opacity:1}
.nav .wrap{position:relative;z-index:1;display:flex;align-items:center;gap:10px;max-width:1280px}

.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px;letter-spacing:-.01em;flex:0 0 auto}
.brand-mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;color:#fff;font-size:13px;font-weight:700;
  background:linear-gradient(145deg,#4a86ff,#1f4fd8);box-shadow:0 6px 16px rgba(47,107,255,.32),inset 0 1px 0 rgba(255,255,255,.35)}
.brand em{font-style:normal;color:var(--mute);font-weight:500;font-size:12px;margin-left:2px;padding:2px 6px;border:1px solid var(--line);border-radius:6px}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{position:relative;padding:8px 14px;font-size:14px;color:var(--sub);border-radius:9px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--ink);background:rgba(11,18,32,.04)}
.nav-links a.act{color:var(--ink);font-weight:600}
.nav-links a.act::after{content:'';position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.nav-cta{display:flex;align-items:center;gap:8px;margin-left:14px}

.burger{display:none;width:38px;height:38px;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:10px;
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.burger i{display:block;width:16px;height:1.6px;background:var(--ink);border-radius:2px;transition:.3s var(--ease)}
.burger.on i:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.burger.on i:nth-child(2){opacity:0}
.burger.on i:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

.mobile-menu{position:fixed;inset:0;z-index:99;background:rgba(255,255,255,.97);backdrop-filter:blur(20px);
  padding:86px 24px 30px;display:flex;flex-direction:column;gap:4px;
  opacity:0;visibility:hidden;transform:translateY(-8px);transition:.35s var(--ease)}
.mobile-menu.on{opacity:1;visibility:visible;transform:none}
.mobile-menu a{padding:14px 6px;font-size:17px;font-weight:600;border-bottom:1px solid var(--line-2)}
.mobile-menu .mm-foot{margin-top:auto;padding-top:20px;font-size:13px;color:var(--sub)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:12px;
  font-size:14.5px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .2s,color .2s,border-color .2s}
.btn:active{transform:scale(.98)}
.btn-p{color:#fff;background:linear-gradient(135deg,#3b7bff,#1f4fd8);box-shadow:0 8px 20px rgba(47,107,255,.28)}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(47,107,255,.36)}
.btn-g{color:var(--ink);background:#fff;border-color:var(--line);box-shadow:var(--sh-1)}
.btn-g:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#d8e0ee}
.btn-light{color:#fff;background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.3);backdrop-filter:blur(10px)}
.btn-light:hover{background:rgba(255,255,255,.26)}
.btn-sm{height:36px;padding:0 14px;font-size:13px;border-radius:10px}
.btn-lg{height:54px;padding:0 30px;font-size:15.5px;border-radius:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none!important}

/* ---------- 内联图标尺寸（避免 SVG 默认撑满容器） ---------- */
.btn svg{width:16px;height:16px;flex:0 0 16px}
.btn-lg svg{width:18px;height:18px;flex:0 0 18px}
.btn-sm svg{width:14px;height:14px;flex:0 0 14px}
.svc-link svg{width:15px;height:15px;flex:0 0 15px}
.pill svg,.hero-meta svg{width:14px;height:14px;flex:0 0 14px}
.foot svg{width:15px;height:15px}
.wechat-card svg,.wechat-qr svg{width:26px;height:26px;margin:0 auto 8px}
.stat svg,.step-dot svg{width:18px;height:18px}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + 96px) 0 90px;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;will-change:transform}
.blob.b1{width:620px;height:620px;left:-160px;top:-180px;background:radial-gradient(circle at 30% 30%,#c7dbff,#e8f0ff 60%,transparent 70%);animation:float1 22s var(--ease-2) infinite}
.blob.b2{width:560px;height:560px;right:-140px;top:-120px;background:radial-gradient(circle at 60% 40%,#d9ccff,#eef0ff 60%,transparent 70%);animation:float2 26s var(--ease-2) infinite}
.blob.b3{width:520px;height:520px;left:44%;top:220px;background:radial-gradient(circle at 50% 50%,#c3f2ff,#e6fbff 60%,transparent 72%);opacity:.4;animation:float3 30s var(--ease-2) infinite}
@keyframes float1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(40px,50px) scale(1.08)}}
@keyframes float2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-50px,40px) scale(1.06)}}
@keyframes float3{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(20px,-40px) scale(1.1)}}

.grid-lines{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(11,18,32,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(11,18,32,.035) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 70% 55% at 50% 30%,#000 20%,transparent 75%);
  mask-image:radial-gradient(ellipse 70% 55% at 50% 30%,#000 20%,transparent 75%)}

.hero-inner{position:relative;z-index:2;text-align:center;max-width:900px;margin:0 auto}
.pill{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:100px;font-size:12.5px;font-weight:600;
  color:#1d4ed8;background:rgba(255,255,255,.8);border:1px solid rgba(47,107,255,.22);box-shadow:0 2px 10px rgba(47,107,255,.1)}
.pill .dot{width:6px;height:6px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 3px rgba(34,197,94,.16);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(34,197,94,.16)}50%{box-shadow:0 0 0 6px rgba(34,197,94,.04)}}

.hero h1{margin:24px 0 0;font-size:clamp(36px,5.6vw,70px);line-height:1.08;letter-spacing:-.035em;font-weight:800;text-wrap:balance}
.grad-text{background:linear-gradient(120deg,#2f6bff 0%,#7c5cff 42%,#06b6d4 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  background-size:200% 100%;animation:gradShift 9s ease-in-out infinite}
@keyframes gradShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.hero .lead{margin:22px auto 0;max-width:640px;font-size:clamp(14.5px,1.5vw,17.5px);line-height:1.85;color:var(--sub);text-wrap:pretty}
.hero-actions{display:flex;gap:12px;justify-content:center;margin-top:34px;flex-wrap:wrap}
.hero-meta{display:flex;gap:22px;justify-content:center;margin-top:26px;font-size:12.5px;color:var(--mute);flex-wrap:wrap}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.hero-meta svg{width:14px;height:14px;color:#22c55e}

/* 首屏展示窗 */
.hero-stage{position:relative;margin:64px auto 0;max-width:1000px;perspective:1400px}
.stage-glow{position:absolute;left:50%;top:8%;transform:translateX(-50%);width:80%;height:70%;border-radius:50%;
  background:radial-gradient(ellipse,rgba(47,107,255,.22),rgba(139,92,246,.12) 45%,transparent 70%);filter:blur(50px);z-index:0}
.stage{position:relative;z-index:1;border-radius:18px;overflow:hidden;background:#fff;border:1px solid var(--line);
  box-shadow:0 40px 90px -20px rgba(16,32,64,.28),0 2px 6px rgba(16,32,64,.06);
  transform:rotateX(6deg) translateY(0);transform-origin:50% 0;transition:transform .9s var(--ease)}
.stage.lift{transform:rotateX(0) translateY(-6px)}
.stage-bar{display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;background:linear-gradient(#fbfcfe,#f5f7fb);border-bottom:1px solid var(--line-2)}
.stage-bar i{width:9px;height:9px;border-radius:50%;background:#e2e8f2}
.stage-bar i:nth-child(1){background:#ff6b6b}.stage-bar i:nth-child(2){background:#ffc542}.stage-bar i:nth-child(3){background:#3ddc97}
.stage-url{margin:0 auto;font-size:11px;color:var(--mute);background:#fff;border:1px solid var(--line-2);border-radius:6px;padding:2px 12px}
.stage-body{display:flex;height:390px;background:#fbfcfe}

.float-card{position:absolute;z-index:3;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.9);border-radius:14px;padding:12px 15px;box-shadow:var(--sh-2);
  animation:bob 6s ease-in-out infinite}
.float-card .k{font-size:11px;color:var(--mute);margin-bottom:3px}
.float-card .v{font-size:17px;font-weight:700;letter-spacing:-.02em}
.float-card .v small{font-size:11px;font-weight:500;color:var(--sub)}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.fc1{left:-72px;top:-30px;animation-delay:-1s}
.fc2{right:-96px;top:150px;animation-delay:-3s}
.fc3{right:-38px;bottom:-28px;animation-delay:-2s}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:760px;margin:0 auto 56px;text-align:center}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);margin-bottom:14px}
.sec-head h2{font-size:clamp(27px,3.6vw,44px);letter-spacing:-.03em;line-height:1.16;text-wrap:balance}
.sec-head p{margin-top:16px;font-size:clamp(14px,1.4vw,16.5px);line-height:1.85;color:var(--sub);text-wrap:pretty}
.sec-head.left{margin-left:0;text-align:left}

/* ---------- 数字条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-l);overflow:hidden;margin-top:20px}
.stat{background:#fff;padding:30px 22px;text-align:center;transition:background .3s}
.stat:hover{background:linear-gradient(#fff,#f8fbff)}
.stat b{display:block;font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.03em;
  background:linear-gradient(135deg,#1f4fd8,#2f6bff 55%,#06b6d4);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;margin-top:6px;font-size:12.5px;color:var(--mute)}

/* ---------- 卡片通用 ---------- */
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:28px;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:#dde5f1}

/* 业务服务 */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{position:relative;overflow:hidden;display:flex;flex-direction:column;min-height:260px}
.svc::before{content:'';position:absolute;inset:0;opacity:0;transition:opacity .5s;
  background:radial-gradient(420px 200px at 15% 0%,var(--soft),transparent 70%)}
.svc:hover::before{opacity:1}
.svc-ico{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;color:#fff;margin-bottom:18px;
  background:linear-gradient(145deg,var(--from),var(--to));box-shadow:0 10px 22px -8px var(--from)}
.svc-ico svg{width:24px;height:24px}
.svc h3{font-size:18.5px;margin-bottom:9px;letter-spacing:-.02em}
.svc p{font-size:13.5px;line-height:1.8;color:var(--sub);flex:1}
.svc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;padding-top:16px;border-top:1px solid var(--line-2)}
.svc-price{font-size:13px;font-weight:700;color:var(--ink-2)}
.svc-price small{font-weight:500;color:var(--mute);margin-right:2px}
.svc-link{font-size:13px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:gap .25s}
.svc:hover .svc-link{gap:8px}

/* ---------- 产品展示（粘性滚动） ---------- */
.showcase{position:relative;background:linear-gradient(180deg,#fff,#f7f9fd 40%,#fff)}
.sc-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.sc-text h2{font-size:clamp(26px,3.2vw,40px);letter-spacing:-.03em;line-height:1.18}
.sc-text .badge-row{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:8px;font-size:11.5px;font-weight:600;
  color:#1d4ed8;background:#eef4ff;border:1px solid #dbe6ff}
.tag.g{color:#067a57;background:#e9fbf3;border-color:#c9f0e0}
.tag.v{color:#6d28d9;background:#f4efff;border-color:#e5dbff}
.sc-text > p{margin-top:16px;font-size:14.5px;line-height:1.9;color:var(--sub)}
.sc-feats{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;margin-top:26px}
.sc-feat{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-2)}
.sc-feat svg{width:17px;height:17px;flex:0 0 17px;margin-top:2px;color:var(--brand)}
.sc-price-row{display:flex;align-items:baseline;gap:10px;margin-top:30px}
.sc-price{font-size:38px;font-weight:800;letter-spacing:-.035em}
.sc-price small{font-size:14px;font-weight:600}
.sc-price-old{font-size:14px;color:var(--mute);text-decoration:line-through}
.sc-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}

.sc-visual{position:relative}
.sc-visual .glow{position:absolute;inset:-8% -6%;background:radial-gradient(circle at 60% 40%,rgba(47,107,255,.18),transparent 62%);filter:blur(26px);z-index:0}
.sc-shot{position:relative;z-index:1;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-3)}

/* ---------- 产品网格 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.prod{overflow:hidden;padding:0;display:flex;flex-direction:column}
.prod-cover{position:relative;height:172px;display:grid;place-items:center;overflow:hidden}
.prod-cover .cv{position:absolute;inset:0;background:linear-gradient(140deg,var(--from),var(--to));opacity:.96}
.prod-cover .cv::after{content:'';position:absolute;inset:0;
  background-image:radial-gradient(circle at 20% 15%,rgba(255,255,255,.4),transparent 45%),
  linear-gradient(60deg,transparent 40%,rgba(255,255,255,.12) 41%,transparent 42%);
  background-size:auto,26px 26px}
.prod-cover img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.prod-cover .glyph{position:relative;z-index:1;color:#fff;opacity:.96}
.prod-cover .glyph svg{width:56px;height:56px}
.prod-badge{position:absolute;top:12px;left:12px;z-index:2;height:24px;padding:0 9px;border-radius:7px;
  display:inline-flex;align-items:center;font-size:11px;font-weight:700;color:#0b1220;background:rgba(255,255,255,.94);box-shadow:0 2px 8px rgba(0,0,0,.08)}
.prod-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.prod-cat{font-size:11.5px;color:var(--mute);font-weight:600;letter-spacing:.04em;text-transform:uppercase}
.prod-body h3{font-size:17px;margin:7px 0 8px;letter-spacing:-.02em}
.prod-body p{font-size:13px;line-height:1.75;color:var(--sub);flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.prod-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;padding-top:15px;border-top:1px solid var(--line-2)}
.prod-price{font-size:20px;font-weight:800;letter-spacing:-.03em}
.prod-price small{font-size:12px;font-weight:600}
.prod-old{font-size:11.5px;color:var(--mute);text-decoration:line-through;margin-left:6px}

/* ---------- 流程 ---------- */
.flow{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:10px}
.flow::before{content:'';position:absolute;left:6%;right:6%;top:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(47,107,255,.1),rgba(47,107,255,.55),rgba(6,182,212,.1))}
.step{position:relative;text-align:center;padding-top:0}
.step-dot{position:relative;z-index:1;width:54px;height:54px;margin:0 auto 18px;border-radius:50%;background:#fff;
  border:1px solid var(--line);display:grid;place-items:center;font-weight:800;font-size:15px;color:var(--brand);
  box-shadow:0 6px 18px rgba(16,32,64,.08);transition:transform .4s var(--ease),box-shadow .4s}
.step:hover .step-dot{transform:translateY(-5px) scale(1.06);box-shadow:0 14px 28px rgba(47,107,255,.22)}
.step h4{font-size:15px;margin-bottom:7px}
.step p{font-size:12.5px;line-height:1.75;color:var(--sub)}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{overflow:hidden;padding:0}
.case-cover{height:150px;position:relative;display:grid;place-items:center;color:#fff;font-weight:700;font-size:15px;letter-spacing:.02em}
.case-cover .cv{position:absolute;inset:0;background:linear-gradient(140deg,var(--from),var(--to))}
.case-cover .cv::after{content:'';position:absolute;inset:0;background:
  radial-gradient(circle at 80% 20%,rgba(255,255,255,.35),transparent 50%),
  repeating-linear-gradient(45deg,transparent,transparent 12px,rgba(255,255,255,.06) 12px,rgba(255,255,255,.06) 24px)}
.case-cover span{position:relative;z-index:1;opacity:.92}
.case-cover .glyph{position:relative;z-index:1;color:#fff;opacity:.9}
.case-cover .glyph svg{width:46px;height:46px}
.case-cover img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.case-info{padding:18px 20px 20px}
.case-info h4{font-size:15.5px;margin-bottom:6px}
.case-info p{font-size:12.5px;color:var(--sub);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.case-meta{display:flex;gap:10px;margin-top:12px;font-size:11.5px;color:var(--mute)}

/* ---------- 技术栈跑马灯 ---------- */
.marquee{overflow:hidden;position:relative;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:14px;width:max-content;animation:marq 34s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marq{to{transform:translateX(-50%)}}
.chip{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;border-radius:12px;background:#fff;
  border:1px solid var(--line);font-size:13.5px;font-weight:600;color:var(--ink-2);box-shadow:var(--sh-1);white-space:nowrap}
.chip i{width:8px;height:8px;border-radius:3px;background:linear-gradient(135deg,var(--brand),var(--brand-2))}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;gap:16px;padding:22px 4px;background:none;border:0;cursor:pointer;
  text-align:left;font-size:15.5px;font-weight:600;color:var(--ink);transition:color .2s}
.faq-q:hover{color:var(--brand)}
.faq-q .ico{margin-left:auto;flex:0 0 22px;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;transition:.35s var(--ease);color:var(--sub)}
.faq-item.on .faq-q .ico{transform:rotate(45deg);background:var(--brand);border-color:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .45s var(--ease)}
.faq-a p{padding:0 44px 22px 4px;font-size:14px;line-height:1.9;color:var(--sub)}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;border-radius:var(--r-xl);padding:70px 40px;text-align:center;
  background:linear-gradient(135deg,#12306f 0%,#1f4fd8 42%,#3b7bff 72%,#06b6d4 100%);color:#fff}
.cta::before{content:'';position:absolute;inset:0;background:
  radial-gradient(circle at 15% 20%,rgba(255,255,255,.18),transparent 42%),
  radial-gradient(circle at 85% 80%,rgba(255,255,255,.14),transparent 45%)}
.cta::after{content:'';position:absolute;left:-10%;top:-40%;width:60%;height:180%;transform:rotate(18deg);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);animation:sheen 7s ease-in-out infinite}
@keyframes sheen{0%,100%{transform:translateX(-30%) rotate(18deg)}50%{transform:translateX(180%) rotate(18deg)}}
.cta > *{position:relative;z-index:1}
.cta h2{font-size:clamp(26px,3.4vw,42px);letter-spacing:-.03em;line-height:1.16}
.cta p{margin:16px auto 0;max-width:560px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.78)}
.cta-actions{display:flex;gap:12px;justify-content:center;margin-top:32px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.foot{background:#0b1220;color:rgba(255,255,255,.62);padding:64px 0 34px;font-size:13px;margin-top:0}
.foot-top{display:flex;flex-wrap:wrap;gap:40px;justify-content:space-between;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:12px}
.foot-desc{max-width:320px;line-height:1.9;color:rgba(255,255,255,.5)}
.foot-cols{display:flex;gap:64px;flex-wrap:wrap}
.foot-col h5{font-size:12.5px;color:#fff;margin:0 0 14px;font-weight:600;letter-spacing:.04em}
.foot-col a,.foot-col span{display:block;margin-bottom:10px;color:rgba(255,255,255,.55);transition:.2s}
.foot-col a:hover{color:#fff;transform:translateX(2px)}
.foot-bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;padding-top:24px;font-size:12px;color:rgba(255,255,255,.42)}
.foot-bottom a{color:rgba(255,255,255,.55)}
.foot-bottom a:hover{color:#fff}

/* ---------- 滚动入场 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease);
  transition-delay:var(--d,0ms)}
.reveal.in{opacity:1;transform:none}
.reveal-s{opacity:0;transform:scale(.97);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0ms)}
.reveal-s.in{opacity:1;transform:none}

/* ---------- 页面内页头 ---------- */
.page-head{padding:calc(var(--nav-h) + 72px) 0 40px;position:relative;overflow:hidden}
.page-head .blob{opacity:.4}
.page-head h1{font-size:clamp(30px,4.4vw,52px);letter-spacing:-.035em;line-height:1.14;text-wrap:balance}
.page-head p{margin-top:16px;max-width:660px;font-size:15px;line-height:1.9;color:var(--sub)}
.crumb{display:flex;gap:8px;align-items:center;font-size:12.5px;color:var(--mute);margin-bottom:18px}
.crumb a:hover{color:var(--brand)}

/* ---------- 产品详情 ---------- */
.pd-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:44px;align-items:start}
.pd-cover{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);background:#fff}
.pd-prose{margin-top:34px;font-size:14.5px;line-height:1.95;color:var(--sub)}
.pd-prose h3{font-size:18px;color:var(--ink);margin:30px 0 10px}
.pd-prose p{margin-bottom:14px}
.pd-prose ul{padding-left:20px;margin:0 0 16px}
.pd-prose li{margin-bottom:8px}
.pd-feats{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px}
.pd-feats li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7}
.pd-feats svg{width:18px;height:18px;flex:0 0 18px;margin-top:3px;color:var(--brand)}

.buy-panel{position:sticky;top:90px;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px;box-shadow:var(--sh-2)}
.buy-price{display:flex;align-items:baseline;gap:10px}
.buy-price b{font-size:36px;letter-spacing:-.04em;font-weight:800}
.buy-price b small{font-size:15px;font-weight:600}
.buy-price s{font-size:13px;color:var(--mute)}
.buy-note{margin-top:8px;font-size:12.5px;color:var(--mute)}
.buy-list{margin:20px 0;padding:18px 0;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);
  display:flex;flex-direction:column;gap:10px}
.buy-list div{display:flex;justify-content:space-between;font-size:13px}
.buy-list span{color:var(--mute)}
.buy-list b{font-weight:600;color:var(--ink-2)}
.buy-actions{display:flex;flex-direction:column;gap:9px;margin-top:6px}
.buy-tip{margin-top:16px;font-size:12px;line-height:1.8;color:var(--mute);text-align:center}

/* ---------- 表单 ---------- */
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:14px}
.field label{font-size:12.5px;color:var(--sub);font-weight:600}
.field label i{color:var(--err);font-style:normal;margin-left:2px}
.input,.textarea,.select{width:100%;border:1px solid var(--line);background:#fff;border-radius:11px;padding:0 14px;
  height:46px;font-size:14.5px;color:var(--ink);outline:none;transition:border-color .2s,box-shadow .2s;font-family:inherit}
.textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.input:focus,.textarea:focus,.select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,107,255,.12)}
.input::placeholder,.textarea::placeholder{color:#b6bfcd}

/* ---------- 支付 / 订单页 ---------- */
.pay-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
.pay-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:28px;box-shadow:var(--sh-1)}
.pay-card h2{font-size:20px;margin-bottom:6px}
.pay-card .sub{font-size:13px;color:var(--sub);margin-bottom:22px}
.pay-methods{display:grid;gap:10px;margin-bottom:20px}
.pay-m{display:flex;align-items:center;gap:12px;padding:14px 16px;border:1.5px solid var(--line);border-radius:13px;cursor:pointer;
  transition:.25s var(--ease);background:#fff;position:relative}
.pay-m:hover{border-color:#c9d8f5;background:#fafcff}
.pay-m.on{border-color:var(--brand);background:#f7faff;box-shadow:0 0 0 3px rgba(47,107,255,.09)}
.pay-m input{position:absolute;opacity:0;pointer-events:none}
.pay-m .mi{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex:0 0 38px}
.pay-m .mi svg{width:22px;height:22px}
.pay-m .mt{flex:1;min-width:0}
.pay-m .mt b{display:block;font-size:14.5px}
.pay-m .mt span{font-size:12px;color:var(--mute)}
.pay-m .radio{width:19px;height:19px;border-radius:50%;border:1.5px solid #cfd8e6;flex:0 0 19px;display:grid;place-items:center;transition:.2s}
.pay-m.on .radio{border-color:var(--brand);background:var(--brand)}
.pay-m.on .radio::after{content:'';width:7px;height:7px;border-radius:50%;background:#fff}
.pay-m.off{opacity:.55;cursor:not-allowed}
.pay-m.off:hover{border-color:var(--line);background:#fff}

.notice{display:flex;gap:12px;padding:16px;border-radius:13px;background:#fff8ec;border:1px solid #f6e3c0;
  color:#8a5a08;font-size:13px;line-height:1.8}
.notice svg{width:19px;height:19px;flex:0 0 19px;margin-top:2px}
.notice b{color:#9a5b00}
.notice.blue{background:#f4f8ff;border-color:#dbe6ff;color:#1d4ed8}
.notice.blue b{color:#1d4ed8}
.notice.ok{background:#f0fbf6;border-color:#c9efdd;color:#08754f}
.notice.ok b{color:#08754f}

.order-sum{display:flex;flex-direction:column;gap:0}
.order-row{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed var(--line);
  font-size:13.5px}
.order-row:last-child{border-bottom:0}
.order-row span{color:var(--sub);flex:0 0 auto}
.order-row b{text-align:right;font-weight:600}
.order-row.total{padding-top:16px;font-size:15px}
.order-row.total b{font-size:24px;letter-spacing:-.03em;color:var(--brand)}

.qr-box{text-align:center;padding:8px 0 4px}
.qr-frame{display:inline-block;padding:14px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-1)}
.qr-frame canvas,.qr-frame img,.qr-frame table{display:block}
.qr-tip{margin-top:16px;font-size:13px;color:var(--sub)}
.qr-tip b{color:var(--ink)}
.pay-status{margin-top:16px;display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--sub);
  background:var(--bg-soft);border:1px solid var(--line);border-radius:100px;padding:8px 16px}
.spin{width:14px;height:14px;border-radius:50%;border:2px solid #d6e0f0;border-top-color:var(--brand);animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.pay-done{text-align:center;padding:22px 0}
.pay-done .ok-ico{width:66px;height:66px;margin:0 auto 18px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,#34d399,#059669);color:#fff;box-shadow:0 14px 34px rgba(5,150,105,.32);
  animation:pop .6s var(--ease)}
@keyframes pop{0%{transform:scale(.4);opacity:0}60%{transform:scale(1.08)}100%{transform:scale(1);opacity:1}}
.pay-done h3{font-size:19px;margin-bottom:8px}
.pay-done p{font-size:13.5px;color:var(--sub);line-height:1.85}

/* 客服微信 */
.wechat-card{text-align:center;padding:10px 0 6px}
.wechat-qr{width:190px;height:190px;margin:0 auto 16px;border-radius:16px;border:1px solid var(--line);
  background:#fff;display:grid;place-items:center;box-shadow:var(--sh-1);overflow:hidden}
.wechat-qr img{width:100%;height:100%;object-fit:cover}
.wechat-id{font-size:15px;font-weight:700;letter-spacing:.01em}
.wechat-id span{font-size:12px;color:var(--mute);font-weight:500;display:block;margin-top:4px}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:start}
.vals{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.val{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:20px}
.val b{display:block;font-size:14.5px;margin-bottom:6px}
.val span{font-size:12.5px;color:var(--sub);line-height:1.75}
.contact-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line-2)}
.contact-item:last-child{border-bottom:0}
.contact-item .ci{width:40px;height:40px;flex:0 0 40px;border-radius:11px;display:grid;place-items:center;
  background:var(--bg-soft);color:var(--brand)}
.contact-item .ci svg{width:19px;height:19px}
.contact-item .ck{font-size:12px;color:var(--mute);margin-bottom:2px}
.contact-item .cv{font-size:14.5px;font-weight:600}

/* ---------- 提示条 ---------- */
.toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);z-index:300;opacity:0;pointer-events:none;
  background:rgba(11,18,32,.92);color:#fff;font-size:13.5px;padding:12px 20px;border-radius:12px;
  box-shadow:0 16px 40px rgba(0,0,0,.24);transition:.35s var(--ease);backdrop-filter:blur(10px)}
.toast.on{opacity:1;transform:translate(-50%,0)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .svc-grid,.prod-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
  .sc-inner{grid-template-columns:1fr;gap:40px}
  .pd-grid{grid-template-columns:1fr;gap:32px}
  .buy-panel{position:static}
  .pay-wrap{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr;gap:34px}
  .flow{grid-template-columns:repeat(2,1fr);gap:24px 16px}
  .flow::before{display:none}
  .fc1,.fc2,.fc3{display:none}
}
@media (max-width:860px){
  .nav-links{display:none}
  .nav-cta .btn-g{display:none}
  .burger{display:flex}
  .sec{padding:76px 0}
  .hero{padding:calc(var(--nav-h) + 64px) 0 60px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stage-body{height:290px}
  .foot-cols{gap:36px}
  .cta{padding:52px 22px;border-radius:var(--r-l)}
}
@media (max-width:620px){
  .wrap{padding:0 18px}
  .svc-grid,.prod-grid,.case-grid{grid-template-columns:1fr}
  .sc-feats{grid-template-columns:1fr}
  .sec-head{margin-bottom:38px}
  .hero h1{letter-spacing:-.028em}
  .hero-actions .btn{width:100%}
  .vals{grid-template-columns:1fr}
  .stage-body{height:230px}
  .foot-top{gap:26px}
  .foot-bottom{flex-direction:column;gap:8px}
  .brand em{display:none}
  .btn-lg{width:100%}
  .fc1,.fc2,.fc3{display:none}
  .stage-glow{opacity:.7}
  .pay-card,.buy-panel{padding:20px}
  .pd-prose{font-size:14px}
}
@media (max-width:400px){
  .nav-cta .btn-p svg{display:none}
  .nav-cta .btn-p{padding:0 13px}
}

/* ---------- 无障碍：尊重减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal,.reveal-s{opacity:1;transform:none}
}

/* ==========================================================================
   首屏应用窗口模拟（纯 CSS 绘制，无图片）
   ========================================================================== */
.mock-body{display:flex;height:390px;min-width:0;overflow:hidden;background:#fbfcfe}
.mock-side{width:132px;flex:0 0 132px;background:#fff;border-right:1px solid var(--line-2);padding:12px 10px;display:flex;flex-direction:column;gap:2px}
.mock-logo{display:flex;align-items:center;gap:7px;font-size:10.5px;font-weight:700;color:#1b2436;padding:4px 6px 12px}
.mock-logo i{width:16px;height:16px;border-radius:5px;background:linear-gradient(145deg,#4a86ff,#1f4fd8);display:grid;place-items:center;color:#fff;font-size:8px;font-style:normal}
.mock-nav{display:flex;align-items:center;gap:7px;padding:6px 8px;border-radius:6px;font-size:10px;color:#7d8798}
.mock-nav.on{background:#eef4ff;color:#1d4ed8;font-weight:600}
.mock-nav b{width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.5}
.mock-main{flex:1;min-width:0;background:#f8fafd;padding:12px;overflow:hidden}
.mock-hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.mock-hd h5{font-size:11.5px;font-weight:700;color:#1b2436}
.mock-hd span{font-size:8.5px;color:#22a06b;background:#e9fbf3;border-radius:5px;padding:2px 6px}
.mock-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-bottom:9px}
.mock-kpi{background:#fff;border:1px solid #eef2f8;border-radius:8px;padding:8px 9px}
.mock-kpi .k{font-size:7.5px;color:#9aa4b6;margin-bottom:3px}
.mock-kpi .v{font-size:12.5px;font-weight:700;color:#0b1220;letter-spacing:-.02em}
.mock-kpi .v.up{color:#0d9f6e}
.mock-panel{background:#fff;border:1px solid #eef2f8;border-radius:9px;padding:9px 11px;margin-bottom:9px}
.mock-panel .t{display:flex;justify-content:space-between;font-size:8.5px;color:#9aa4b6;margin-bottom:8px}
.mock-bars{display:flex;align-items:flex-end;gap:5px;height:76px}
.mock-bars i{flex:1;border-radius:3px 3px 1px 1px;background:linear-gradient(#c9dbff,#a9c5ff);transform-origin:bottom;animation:barGrow .9s var(--ease) both}
.mock-bars i.hi{background:linear-gradient(#7aa6ff,#3b7bff)}
@keyframes barGrow{from{transform:scaleY(.05);opacity:0}}
.mock-table{background:#fff;border:1px solid #eef2f8;border-radius:9px;overflow:hidden}
.mock-tr{display:grid;grid-template-columns:1.6fr 1fr .9fr .8fr;gap:6px;padding:6px 10px;font-size:8.5px;border-bottom:1px solid #f3f6fb;color:#3c4759}
.mock-tr:last-child{border-bottom:0}
.mock-tr.head{background:#fafbfe;color:#9aa4b6;font-weight:600}
.mock-tr span,.mock-tr b{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mock-tr b{font-weight:600}
.mock-seg{display:inline-block;width:34px;height:11px;border-radius:4px;background:#eef4ff;color:#1d4ed8;font-size:7px;text-align:center;line-height:11px}
.mock-seg.g{background:#e9fbf3;color:#0d9f6e}
.mock-seg.a{background:#fff6e6;color:#b45309}

/* 产品大图（详情页展示） */
.shot-lg{border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-2)}
.shot-lg .stage-bar{border-bottom:1px solid var(--line-2)}
.shot-lg .mock-side{width:150px;flex:0 0 150px}
.shot-lg .mock-main{padding:14px}
.shot-lg .mock-body{display:flex;height:420px}

/* ==========================================================================
   产品图片轮播
   ========================================================================== */
.gal{position:relative;overflow:hidden;border-radius:inherit;background:#f6f8fc}
.gal-track{display:flex;transition:transform .55s var(--ease);will-change:transform}
.gal-slide{flex:0 0 100%;aspect-ratio:16/10;display:grid;place-items:center;background:#f6f8fc}
.gal-slide img{width:100%;height:100%;object-fit:cover;display:block}
.gal-nav{position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.92);border:1px solid rgba(11,18,32,.06);display:grid;place-items:center;
  cursor:pointer;opacity:0;transition:.25s var(--ease);color:#1b2436;box-shadow:0 6px 18px rgba(16,32,64,.16);padding:0}
.gal:hover .gal-nav{opacity:1}
.gal-nav:hover{transform:translateY(-50%) scale(1.06)}
.gal-nav.prev{left:12px}
.gal-nav.next{right:12px}
.gal-nav svg{width:18px;height:18px}
.gal-dots{position:absolute;left:0;right:0;bottom:12px;display:flex;gap:6px;justify-content:center}
.gal-dots i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.6);
  box-shadow:0 1px 4px rgba(0,0,0,.2);cursor:pointer;transition:.25s var(--ease)}
.gal-dots i.on{width:18px;border-radius:4px;background:#fff;box-shadow:0 1px 6px rgba(0,0,0,.28)}
.gal-thumbs{display:flex;gap:10px;margin-top:12px;overflow-x:auto;padding-bottom:4px;
  scrollbar-width:thin}
.gal-thumbs button{flex:0 0 78px;height:58px;border-radius:9px;overflow:hidden;border:1.5px solid var(--line);
  background:#f6f8fc;cursor:pointer;padding:0;transition:.2s var(--ease);opacity:.75}
.gal-thumbs button:hover{opacity:1}
.gal-thumbs button.on{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,107,255,.14);opacity:1}
.gal-thumbs img{width:100%;height:100%;object-fit:cover;display:block}
@media(max-width:620px){
  .gal-slide{aspect-ratio:4/3}
  .gal-nav{opacity:1;width:32px;height:32px}
  .gal-thumbs button{flex:0 0 62px;height:46px}
}

/* ==========================================================================
   规格选择
   ========================================================================== */
.spec-pick{margin-top:18px;padding-top:18px;border-top:1px solid var(--line-2)}
.spec-pick-t{font-size:12.5px;color:var(--sub);margin-bottom:10px;font-weight:600}
.spec-opts{display:grid;gap:8px}
.spec-opt{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:11px 13px;width:100%;
  border:1.5px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;text-align:left;
  transition:.22s var(--ease);font-family:inherit}
.spec-opt:hover{border-color:#c9d8f5;background:#fafcff}
.spec-opt.on{border-color:var(--brand);background:#f7faff;box-shadow:0 0 0 3px rgba(47,107,255,.09)}
.so-name{font-size:14px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:6px}
.so-name em{font-style:normal;font-size:10.5px;font-weight:700;color:#a8620a;
  background:#fff4e0;border:1px solid #f6e0bd;border-radius:5px;padding:1px 5px;line-height:1.5}
.so-price{margin-left:auto;font-size:14.5px;font-weight:700;color:var(--brand);letter-spacing:-.01em}
.so-desc{flex:1 0 100%;font-size:11.5px;color:var(--mute);line-height:1.65}

/* 站点 LOGO */
.brand-logo{height:32px;width:auto;max-width:170px;object-fit:contain;display:block}
.foot-brand .brand-logo{height:28px;max-width:150px}
.brand-name{white-space:nowrap}
@media(max-width:620px){
  .brand-logo{height:26px;max-width:120px}
}

/* 有 LOGO 时隐藏文字品牌（保留给读屏） */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0}