/* ==========================================================================
   青衍社 QINGYAN TECH · 官网样式表
   目录：1 变量与基础  2 通用组件  3 头部导航  4 首屏  5 服务
        6 优势  7 流程  8 案例  9 评价  10 关于  11 FAQ  12 联系  13 页脚  14 响应式
   ========================================================================== */

/* ---------- 1. 变量与基础 ---------- */
:root{
  --brand-1:#2fe3c4;
  --brand-2:#3b82f6;
  --brand-3:#0ea5a4;
  --grad:linear-gradient(120deg,var(--brand-1),var(--brand-2));
  --ink:#0b1524;
  --ink-2:#152238;
  --text:#1b2735;
  --text-2:#57687d;
  --text-3:#8494a6;
  --line:#e6ecf3;
  --bg:#ffffff;
  --bg-soft:#f6f9fc;
  --radius:18px;
  --radius-lg:26px;
  --shadow-sm:0 2px 10px rgba(15,35,60,.05);
  --shadow:0 14px 40px -18px rgba(15,35,60,.18);
  --shadow-lg:0 34px 70px -30px rgba(11,21,36,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
  --max:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(47,227,196,.3)}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:110px 0;position:relative}
.section-soft{background:var(--bg-soft)}
.section-dark{background:var(--ink);color:#e8eef7;position:relative;overflow:hidden}
.section-dark::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 320px at 12% 0%,rgba(47,227,196,.16),transparent 62%),
    radial-gradient(700px 360px at 88% 100%,rgba(59,130,246,.18),transparent 62%);
  pointer-events:none;
}
.section-dark .container{position:relative;z-index:1}

/* 渐变文字 */
.grad-text{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* ---------- 2. 通用组件 ---------- */
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.22em;
  color:var(--brand-3);text-transform:uppercase;margin-bottom:14px;
}
.section-dark .eyebrow{color:var(--brand-1)}

.section-head{max-width:760px;margin:0 auto 62px;text-align:center}
.section-head.left{margin:0 0 40px;text-align:left}
.section-head h2{
  font-size:clamp(26px,3vw,40px);line-height:1.32;letter-spacing:-.01em;
  font-weight:800;color:var(--ink);
}
.section-head p{margin-top:18px;color:var(--text-2);font-size:16.5px}
.section-head.light h2{color:#fff}
.section-head.light p{color:rgba(226,238,250,.72)}

.pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(47,227,196,.32);
  color:#c9f7ee;font-size:13.5px;font-weight:500;backdrop-filter:blur(6px);
}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-1);box-shadow:0 0 0 4px rgba(47,227,196,.18);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,color .25s,border-color .25s;
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-lg{padding:16px 34px;font-size:16px}
.btn-block{width:100%}
.btn-primary{background:var(--grad);color:#04202b;box-shadow:0 12px 26px -12px rgba(47,227,196,.75)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -12px rgba(47,227,196,.85)}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.24);color:#e8eef7}
.btn-ghost:hover{background:rgba(255,255,255,.13);transform:translateY(-2px)}
.btn-outline{border-color:var(--line);color:var(--ink);background:#fff}
.btn-outline:hover{border-color:var(--brand-3);color:var(--brand-3);transform:translateY(-2px)}

/* 滚动进场 */
[data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
[data-delay="1"]{transition-delay:.08s}
[data-delay="2"]{transition-delay:.16s}
[data-delay="3"]{transition-delay:.24s}
[data-delay="4"]{transition-delay:.32s}
[data-delay="5"]{transition-delay:.4s}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- 3. 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .3s,box-shadow .3s,backdrop-filter .3s,padding .3s;
  padding:14px 0;
}
.site-header.scrolled{
  background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);
  box-shadow:0 1px 0 rgba(15,35,60,.07),0 10px 30px -22px rgba(15,35,60,.3);
  padding:8px 0;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}

.brand{display:inline-flex;align-items:center;gap:11px}
.brand-mark{width:40px;height:40px;flex:none;display:block;filter:drop-shadow(0 8px 16px rgba(47,227,196,.35))}
.brand-mark.small{width:34px;height:34px;filter:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:.06em;color:#fff;transition:color .3s}
.brand-text em{font-size:9.5px;font-style:normal;letter-spacing:.2em;color:rgba(255,255,255,.55);transition:color .3s}
.site-header.scrolled .brand-text strong{color:var(--ink)}
.site-header.scrolled .brand-text em{color:var(--text-3)}

.nav{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;padding:9px 14px;border-radius:999px;font-size:15px;font-weight:500;
  color:rgba(255,255,255,.82);transition:color .25s,background .25s;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;border-radius:2px;
  background:var(--grad);transform:translateX(-50%);transition:width .3s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link.active{color:#fff}
.nav-link:hover::after,.nav-link.active::after{width:20px}
.site-header.scrolled .nav-link{color:var(--text-2)}
.site-header.scrolled .nav-link:hover,.site-header.scrolled .nav-link.active{color:var(--ink)}
.nav-cta{margin-left:8px;color:#04202b}

.nav-toggle{
  display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;
  padding:11px;border-radius:12px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:#fff;margin:4.5px 0;transition:transform .3s var(--ease),opacity .2s}
.site-header.scrolled .nav-toggle span{background:var(--ink)}
.nav-toggle.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- 4. 首屏 ---------- */
.hero{
  position:relative;padding:190px 0 90px;overflow:hidden;
  background:
    radial-gradient(1100px 520px at 78% -8%,rgba(47,227,196,.2),transparent 60%),
    radial-gradient(900px 520px at 8% 8%,rgba(59,130,246,.22),transparent 62%),
    linear-gradient(180deg,#081321 0%,#0b1524 55%,#0d1a2c 100%);
  color:#e8eef7;
}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 18%,#000 0%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 50% 18%,#000 0%,transparent 76%);
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.hero-glow.g1{width:420px;height:420px;background:#2fe3c4;top:-90px;right:6%;animation:float 13s ease-in-out infinite}
.hero-glow.g2{width:360px;height:360px;background:#3b82f6;bottom:-120px;left:-60px;animation:float 16s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(28px)}}

.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.06fr .94fr;gap:64px;align-items:center;
}
.hero h1{
  margin:22px 0 0;font-size:clamp(34px,4.4vw,58px);line-height:1.2;
  font-weight:800;letter-spacing:-.015em;color:#fff;
}
.hero-sub{margin-top:24px;font-size:17.5px;line-height:1.85;color:rgba(214,228,242,.76);max-width:560px}
.hero-sub b{color:#fff;font-weight:600;border-bottom:2px solid rgba(47,227,196,.55);padding-bottom:1px}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:36px;padding-top:26px;border-top:1px solid rgba(255,255,255,.1)}
.hero-points li{position:relative;padding-left:22px;font-size:14.5px;color:rgba(214,228,242,.7)}
.hero-points li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:7px;
  border-left:2px solid var(--brand-1);border-bottom:2px solid var(--brand-1);
  transform:rotate(-45deg);border-radius:1px;
}

/* 首屏数据面板 */
.hero-panel{position:relative}
.panel-card{
  position:relative;border-radius:var(--radius-lg);padding:26px;
  background:linear-gradient(160deg,rgba(255,255,255,.12),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-lg);backdrop-filter:blur(16px);
}
.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
.panel-title{font-size:15.5px;font-weight:700;color:#fff}
.panel-desc{font-size:12.5px;color:rgba(214,228,242,.55);margin-top:3px}
.live{
  display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;letter-spacing:.1em;
  color:#04202b;background:var(--brand-1);padding:4px 10px;border-radius:999px;flex:none;
}
.live i{width:6px;height:6px;border-radius:50%;background:#04202b;animation:pulse 1.6s infinite}

.panel-metrics{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.metric{
  padding:16px;border-radius:14px;background:rgba(4,20,34,.42);
  border:1px solid rgba(255,255,255,.09);
}
.metric-label{display:block;font-size:12.5px;color:rgba(214,228,242,.6)}
.metric strong{display:block;margin-top:6px;font-size:26px;font-weight:800;letter-spacing:-.02em;color:#fff;font-variant-numeric:tabular-nums}

.chart{margin-top:20px;padding:16px 16px 10px;border-radius:14px;background:rgba(4,20,34,.34);border:1px solid rgba(255,255,255,.08)}
.chart-bars{display:flex;align-items:flex-end;gap:10px;height:104px}
.chart-bars span{
  flex:1;height:var(--h);border-radius:6px 6px 3px 3px;
  background:linear-gradient(180deg,var(--brand-1),rgba(59,130,246,.85));
  opacity:.9;transition:height .8s var(--ease),opacity .3s;
}
.chart-bars span:hover{opacity:1}
.chart-axis{display:flex;justify-content:space-between;margin-top:10px;font-size:11.5px;color:rgba(214,228,242,.45)}

.panel-rows{margin-top:16px;margin-bottom:44px;display:grid;gap:9px}
.panel-rows .row{
  display:flex;align-items:center;gap:11px;padding:11px 13px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.07);
}
.panel-rows .row p{flex:1;font-size:13.5px;color:rgba(226,238,250,.85)}
.panel-rows .row em{font-style:normal;font-size:13px;font-weight:700;color:var(--brand-1)}
.tag{font-size:10.5px;font-weight:700;padding:3px 8px;border-radius:6px;letter-spacing:.03em}
.tag-a{background:rgba(47,227,196,.16);color:#7cf0dc}
.tag-b{background:rgba(59,130,246,.18);color:#9dc4ff}
.tag-c{background:rgba(168,85,247,.18);color:#d7b4ff}

.panel-float{
  position:absolute;display:flex;flex-direction:column;gap:2px;
  padding:13px 18px;border-radius:16px;background:#fff;color:var(--ink);
  box-shadow:var(--shadow);animation:float 7s ease-in-out infinite;
}
.panel-float b{font-size:19px;font-weight:800;letter-spacing:-.02em}
.panel-float span{font-size:11.5px;color:var(--text-3)}
.panel-float.f1{top:-22px;right:-18px}
.panel-float.f2{bottom:-16px;left:-26px;animation-delay:1.2s}

.stat-strip{
  position:relative;z-index:1;margin-top:86px;padding:30px 8px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  border-top:1px solid rgba(255,255,255,.1);
}
.stat-strip li{text-align:center}
.stat-strip strong{
  display:block;font-size:clamp(28px,3.4vw,42px);font-weight:800;letter-spacing:-.03em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;font-variant-numeric:tabular-nums;
}
.stat-strip span{display:block;margin-top:4px;font-size:14px;color:rgba(214,228,242,.62)}

/* ---------- 5. 服务 ---------- */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{
  position:relative;padding:34px 30px 30px;border-radius:var(--radius-lg);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
}
.service-card::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease);
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(47,227,196,.4)}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:56px;height:56px;border-radius:16px;margin-bottom:22px;
  background:linear-gradient(140deg,rgba(47,227,196,.16),rgba(59,130,246,.14));
  color:var(--brand-3);border:1px solid rgba(47,227,196,.22);
}
.service-icon svg{width:26px;height:26px}
.service-card h3{font-size:21px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.service-card > p{margin-top:12px;color:var(--text-2);font-size:15px}
.ticks{margin-top:22px;padding-top:20px;border-top:1px dashed var(--line);display:grid;gap:11px}
.ticks li{position:relative;padding-left:24px;font-size:14.5px;color:var(--text-2)}
.ticks li::before{
  content:"";position:absolute;left:2px;top:8px;width:11px;height:6px;
  border-left:2px solid var(--brand-3);border-bottom:2px solid var(--brand-3);
  transform:rotate(-45deg);border-radius:1px;
}
.service-index{
  position:absolute;right:24px;top:22px;font-size:42px;font-weight:800;
  color:rgba(15,35,60,.05);letter-spacing:-.04em;
}

.extra-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:24px}
.extra-card{
  padding:26px 24px;border-radius:var(--radius);background:var(--bg-soft);
  border:1px solid var(--line);transition:transform .3s var(--ease),background .3s,box-shadow .3s;
}
.extra-card:hover{transform:translateY(-4px);background:#fff;box-shadow:var(--shadow)}
.extra-icon{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;
  border-radius:11px;background:var(--grad);color:#04202b;font-size:16px;margin-bottom:14px;
}
.extra-card h4{font-size:16.5px;font-weight:700;color:var(--ink)}
.extra-card p{margin-top:8px;font-size:14px;color:var(--text-2)}

/* ---------- 6. 优势 ---------- */
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.why-item{
  position:relative;padding:32px 30px;border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.1);transition:transform .35s var(--ease),border-color .35s,background .35s;
}
.why-item:hover{transform:translateY(-5px);border-color:rgba(47,227,196,.45);background:linear-gradient(160deg,rgba(47,227,196,.1),rgba(255,255,255,.02))}
.why-num{
  display:block;font-size:13px;font-weight:800;letter-spacing:.18em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  margin-bottom:12px;
}
.why-item h4{font-size:19px;font-weight:700;color:#fff}
.why-item p{margin-top:12px;font-size:14.8px;color:rgba(214,228,242,.68)}

/* ---------- 7. 流程 ---------- */
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.process::before{
  content:"";position:absolute;left:11px;right:calc(20% - 11px);top:11px;height:2px;
  background:linear-gradient(90deg,rgba(47,227,196,.5),rgba(59,130,246,.5));
  opacity:.35;
}
.process-step{position:relative;padding:0 16px 0 0}
.step-dot{
  display:block;width:22px;height:22px;border-radius:50%;background:#fff;
  border:3px solid var(--brand-3);margin-bottom:24px;position:relative;z-index:1;
  box-shadow:0 0 0 6px rgba(47,227,196,.12);
}
.step-no{display:block;font-size:11.5px;font-weight:800;letter-spacing:.16em;color:var(--brand-3)}
.process-step h4{margin-top:9px;font-size:17.5px;font-weight:700;color:var(--ink)}
.process-step p{margin-top:10px;font-size:14.2px;color:var(--text-2)}
.process-step em{display:block;margin-top:14px;font-style:normal;font-size:12.8px;color:var(--text-3);padding-top:12px;border-top:1px dashed var(--line)}

/* ---------- 8. 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{
  border-radius:var(--radius-lg);overflow:hidden;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
  display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case-cover{
  position:relative;height:178px;display:flex;align-items:flex-end;
  padding:18px 20px;color:#fff;
}
.case-cover::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;
}
.case-cover b{position:relative;z-index:1;font-size:20px;font-weight:800;letter-spacing:.02em}
.case-badge{
  position:absolute;top:16px;left:20px;z-index:1;
  font-size:11.5px;font-weight:600;padding:5px 11px;border-radius:999px;
  background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.32);backdrop-filter:blur(6px);
}
.cv1{background:linear-gradient(135deg,#0f766e,#0ea5a4)}
.cv2{background:linear-gradient(135deg,#1d4ed8,#3b82f6)}
.cv3{background:linear-gradient(135deg,#0b1524,#274b6d)}
.cv4{background:linear-gradient(135deg,#0e7490,#22a0b8)}
.cv5{background:linear-gradient(135deg,#7c3aed,#a855f7)}
.cv6{background:linear-gradient(135deg,#0d5c63,#2fe3c4)}
.case-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.case-body h4{font-size:17px;font-weight:700;color:var(--ink);line-height:1.5}
.case-body p{margin-top:10px;font-size:14.2px;color:var(--text-2);flex:1}
.case-metrics{display:flex;gap:20px;margin-top:18px;padding-top:16px;border-top:1px dashed var(--line)}
.case-metrics li{font-size:12.8px;color:var(--text-3)}
.case-metrics b{display:block;font-size:19px;font-weight:800;color:var(--brand-3);letter-spacing:-.02em}

/* ---------- 9. 评价 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote{
  padding:32px 30px;border-radius:var(--radius-lg);background:var(--bg-soft);
  border:1px solid var(--line);position:relative;
  transition:transform .35s var(--ease),background .35s,box-shadow .35s;
}
.quote::before{
  content:"”";position:absolute;right:26px;top:6px;font-size:76px;line-height:1;
  color:rgba(47,227,196,.22);font-family:Georgia,serif;
}
.quote:hover{transform:translateY(-5px);background:#fff;box-shadow:var(--shadow)}
.quote p{font-size:15.5px;color:var(--text);line-height:1.85;position:relative;z-index:1}
.quote footer{display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:20px;border-top:1px dashed var(--line)}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#04202b;font-weight:800;font-size:16px;
}
.quote footer span:last-child{display:flex;flex-direction:column}
.quote footer b{font-size:14.5px;color:var(--ink)}
.quote footer em{font-style:normal;font-size:12.5px;color:var(--text-3)}

/* ---------- 10. 关于 ---------- */
.about-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:start}
.about-copy h2{font-size:clamp(26px,3vw,38px);font-weight:800;color:var(--ink);margin-top:6px}
.about-copy .lead{margin-top:20px;font-size:17.5px;color:var(--ink-2);font-weight:500;line-height:1.8}
.about-copy p:not(.lead){margin-top:18px;color:var(--text-2);font-size:15.5px}
.about-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.about-tags span{
  padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--ink-2);font-weight:500;
}
.about-side{display:grid;gap:20px}
.value-card{padding:30px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.value-card h4{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:18px}
.value-card ul{display:grid;gap:14px}
.value-card li{font-size:14.5px;color:var(--text-2);padding-left:20px;position:relative;line-height:1.7}
.value-card li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--grad)}
.value-card li b{color:var(--ink)}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.about-stats div{
  padding:22px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);text-align:center;
}
.about-stats b{
  display:block;font-size:28px;font-weight:800;letter-spacing:-.03em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  font-variant-numeric:tabular-nums;
}
.about-stats span{font-size:13px;color:var(--text-3)}

/* ---------- 11. FAQ ---------- */
.faq-inner{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
.faq-inner .section-head{margin-bottom:26px}
.faq-inner .btn{margin-top:6px}
.faq-list{display:grid;gap:14px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  overflow:hidden;transition:border-color .3s,box-shadow .3s;
}
.faq-item[open]{border-color:rgba(47,227,196,.45);box-shadow:var(--shadow-sm)}
.faq-item summary{
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";width:11px;height:11px;flex:none;
  border-right:2px solid var(--brand-3);border-bottom:2px solid var(--brand-3);
  transform:rotate(45deg);transition:transform .3s var(--ease);margin-top:-4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.faq-body{padding:0 24px 22px;animation:fadeUp .35s var(--ease)}
.faq-body p{font-size:14.8px;color:var(--text-2);line-height:1.85}
@keyframes fadeUp{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- 12. 联系 ---------- */
.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contact-copy h2{font-size:clamp(26px,3vw,38px);font-weight:800;color:#fff;margin-top:6px}
.contact-copy > p{margin-top:18px;color:rgba(214,228,242,.72);font-size:16px;max-width:460px}
.contact-list{margin-top:36px;display:grid;gap:18px}
.contact-list li{display:flex;align-items:center;gap:16px}
.ci{
  width:44px;height:44px;flex:none;border-radius:13px;
  display:flex;align-items:center;justify-content:center;font-size:17px;
  background:rgba(47,227,196,.14);border:1px solid rgba(47,227,196,.3);color:var(--brand-1);
}
.contact-list em{display:block;font-style:normal;font-size:12.5px;color:rgba(214,228,242,.55)}
.contact-list b{font-size:16.5px;color:#fff;font-weight:600}
.contact-note{
  margin-top:32px;padding:16px 20px;border-radius:14px;font-size:13.5px;
  color:rgba(214,228,242,.72);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);
}
.contact-note b{color:#fff}

.contact-form{
  position:relative;padding:34px;border-radius:var(--radius-lg);
  background:#fff;box-shadow:var(--shadow-lg);color:var(--text);
}
.contact-form h3{font-size:19px;font-weight:800;color:var(--ink);margin-bottom:24px}
.field{margin-bottom:16px;position:relative}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field label i{color:#e5484d;font-style:normal}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:12px;border:1px solid var(--line);
  background:#fbfdff;font-size:15px;transition:border-color .25s,box-shadow .25s,background .25s;
  outline:none;resize:vertical;
}
.field textarea{line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand-3);background:#fff;box-shadow:0 0 0 4px rgba(47,227,196,.13);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:42px}
.field .err{display:none;font-style:normal;font-size:12.5px;color:#e5484d;margin-top:6px}
.field.invalid input,.field.invalid textarea{border-color:#e5484d;background:#fff7f7}
.field.invalid .err{display:block}
.form-tip{margin-top:14px;font-size:12.5px;color:var(--text-3);text-align:center;line-height:1.7}
.form-success[hidden]{display:none}
.form-success{
  position:absolute;inset:0;border-radius:var(--radius-lg);background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:40px;gap:10px;animation:fadeUp .4s var(--ease);
}
.success-icon{
  width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(47,227,196,.2),rgba(59,130,246,.18));
  color:var(--brand-3);border:1px solid rgba(47,227,196,.4);margin-bottom:6px;
}
.success-icon svg{width:30px;height:30px}
.form-success b{font-size:19px;color:var(--ink)}
.form-success p{font-size:14.5px;color:var(--text-2);max-width:320px;margin-bottom:8px}

/* ---------- 13. 页脚 ---------- */
.site-footer{background:#071020;color:rgba(214,228,242,.66);padding:70px 0 28px;position:relative}
.footer-top{display:grid;grid-template-columns:1.3fr 2fr;gap:56px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.09)}
.footer-brand .brand{margin-bottom:20px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(214,228,242,.45)}
.footer-brand p{font-size:14px;line-height:1.9}
.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.footer-links h5{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-links a{display:block;font-size:14px;color:rgba(214,228,242,.62);padding:5px 0;transition:color .25s,transform .25s}
.footer-links a:hover{color:var(--brand-1);transform:translateX(3px)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;font-size:13px;color:rgba(214,228,242,.45)}
.footer-meta{letter-spacing:.06em}

.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  background:var(--grad);color:#04202b;box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s,transform .3s,visibility .3s;z-index:90;
}
.to-top.show{opacity:1;visibility:visible;transform:none}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1080px){
  .hero-inner{gap:44px}
  .service-grid,.case-grid,.quote-grid{grid-template-columns:repeat(2,1fr)}
  .extra-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(3,1fr);gap:34px 0}
  .process::before{display:none}
  .about-inner,.faq-inner,.contact-inner{gap:44px}
}

@media (max-width:900px){
  .nav-toggle{display:block}
  .nav{
    position:fixed;top:64px;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-radius:20px;padding:16px;
    box-shadow:0 30px 60px -24px rgba(11,21,36,.45);
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
  }
  .nav.open{opacity:1;visibility:visible;transform:none}
  .nav-link{padding:13px 16px;border-radius:12px;color:var(--text-2);font-size:15.5px}
  .nav-link.active,.nav-link:hover{background:var(--bg-soft);color:var(--ink)}
  .nav-link::after{display:none}
  .nav-cta{margin:8px 0 0;color:#04202b}

  .hero{padding:150px 0 70px}
  .hero-inner{grid-template-columns:1fr;gap:56px}
  .hero-sub,.hero-actions,.hero-points{max-width:none}
  .panel-float.f1{right:0}
  .panel-float.f2{left:0}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:28px;margin-top:60px}
  .section{padding:82px 0}
  .about-inner,.faq-inner,.contact-inner{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:36px}
  .section-head{margin-bottom:44px}
}

@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:66px 0}
  .hero{padding:132px 0 56px}
  .service-grid,.case-grid,.quote-grid,.extra-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr}
  .process{grid-template-columns:1fr;gap:30px}
  .process-step{padding-right:0}
  .about-stats{grid-template-columns:1fr 1fr}
  .footer-links{grid-template-columns:1fr 1fr;gap:24px}
  .contact-form{padding:26px 22px}
  .panel-card{padding:20px}
  .panel-float{display:none}
  .btn-lg{padding:15px 26px;font-size:15px;width:100%}
  .hero-actions{gap:12px}
  .case-cover{height:150px}
  .quote{padding:26px 22px}
  .footer-bottom{flex-direction:column;gap:8px;text-align:left}
  .to-top{right:16px;bottom:18px}
}

/* 锚点定位补偿固定导航 */
section[id],main[id]{scroll-margin-top:78px}

/* ---------- 404 页 ---------- */
.notfound{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;text-align:center;color:#e8eef7;
  background:
    radial-gradient(900px 420px at 78% -10%,rgba(47,227,196,.18),transparent 60%),
    radial-gradient(760px 420px at 10% 10%,rgba(59,130,246,.2),transparent 62%),
    linear-gradient(180deg,#081321,#0d1a2c);
}
.notfound-bg{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 40%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000,transparent 72%);
}
.notfound-inner{position:relative;z-index:1;max-width:620px;display:flex;flex-direction:column;align-items:center;gap:6px}
.notfound-inner .brand{margin-bottom:26px}
.notfound-inner .brand-text strong{color:#fff}
.notfound-inner .brand-text em{color:rgba(214,228,242,.5)}
.notfound-code{
  font-size:clamp(72px,14vw,132px);font-weight:800;line-height:1;letter-spacing:-.04em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.notfound h1{font-size:clamp(22px,3vw,32px);font-weight:800;color:#fff;margin-top:10px}
.notfound p{margin-top:14px;color:rgba(214,228,242,.7);font-size:16px;max-width:460px}
.notfound-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;justify-content:center}
@media (max-width:640px){ .notfound-actions{width:100%} }