/* ================= 璀思 GEO 官网 · 全局样式 ================= */
:root{
  --ink:#08182f;
  --ink-2:#1d3557;
  --muted:#5b7391;
  --line:#e2ebf7;
  --bg:#ffffff;
  --bg-soft:#f5f9ff;
  --blue:#1152d4;
  --blue-deep:#0a2f7a;
  --cyan:#00c2d7;
  --gold:#f5a524;
  --radius:18px;
  --shadow-sm:0 2px 12px rgba(12,42,90,.06);
  --shadow:0 14px 40px rgba(12,42,90,.10);
  --shadow-lg:0 28px 76px rgba(9,32,72,.16);
  --max:1400px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16.5px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}
.center{text-align:center}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.84);backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(226,235,247,.9);
  transition:.3s;
}
.site-header.scrolled{box-shadow:0 8px 30px rgba(12,42,90,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:82px}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.5px}
.logo-img{height:50px;width:auto;display:block}
.footer-logo{height:46px}
.qr-li{display:flex;align-items:center}
.qr-item{display:inline-flex;align-items:center;gap:12px}
.qr-item img{
  width:96px;height:96px;border-radius:10px;background:#fff;padding:5px;
  box-shadow:0 6px 18px rgba(0,0,0,.35);
}
.qr-item > span{line-height:1.6;color:#8ba6c4}
.qr-center{
  display:block;width:128px;height:auto;margin:6px auto 0;
  border-radius:12px;background:#fff;padding:6px;
  box-shadow:0 8px 24px rgba(0,0,0,.42);
}
.qr-cap{display:block;text-align:center;margin-top:9px;font-size:12.5px;color:#a8c6e6;letter-spacing:.5px}
.qr-col h4{text-align:center}
.qr-col{text-align:center}
@media (max-width:1180px){.qr-col h4{text-align:left}}
.logo .mark{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,#1152d4,#00c2d7);
  box-shadow:0 8px 20px rgba(17,82,212,.32);
  color:#fff;font-size:22px;font-weight:800;letter-spacing:0;
}
.logo .txt{display:flex;flex-direction:column;line-height:1.15}
.logo .txt b{font-size:21px;color:var(--ink)}
.logo .txt span{font-size:11.5px;color:var(--muted);letter-spacing:2.8px;font-weight:600}
.nav-links{display:flex;align-items:center;gap:36px}
.nav-links a{font-size:16.5px;color:var(--ink-2);font-weight:500;position:relative;padding:7px 0}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:3px;width:0;border-radius:2px;
  background:linear-gradient(90deg,#1152d4,#00c2d7);transition:.28s;
}
.nav-links a:hover{color:var(--blue)}
.nav-links a:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:16px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:11px;cursor:pointer;font-weight:600;
  padding:13px 26px;font-size:16px;transition:.24s;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#1152d4,#0a7fd4);color:#fff;
  box-shadow:0 10px 26px rgba(17,82,212,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(17,82,212,.36)}
.btn-ghost{background:#fff;color:var(--blue);border:1.5px solid #cfdffb}
.btn-ghost:hover{border-color:var(--blue);background:#f4f9ff}
.btn-sm{padding:10px 19px;font-size:14.8px;border-radius:10px}
.btn-block{width:100%}
.nav-toggle{display:none;background:none;border:0;font-size:25px;color:var(--ink);cursor:pointer}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;padding:172px 0 108px;
  background:
    radial-gradient(1000px 520px at 78% -8%,rgba(0,194,215,.18),transparent 62%),
    radial-gradient(840px 500px at 8% 12%,rgba(17,82,212,.14),transparent 60%),
    linear-gradient(180deg,#f7fbff 0%,#ffffff 78%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(17,82,212,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(17,82,212,.055) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 72%);
}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:70px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  background:#fff;border:1px solid #d7e6fb;border-radius:100px;
  padding:8px 19px 8px 9px;font-size:14.2px;color:var(--blue);font-weight:600;
  box-shadow:var(--shadow-sm);margin-bottom:26px;
}
.eyebrow em{
  font-style:normal;background:linear-gradient(135deg,#1152d4,#00c2d7);color:#fff;
  padding:3px 11px;border-radius:100px;font-size:12.5px;letter-spacing:.5px;
}
.hero h1{
  font-size:68px;line-height:1.14;letter-spacing:-1.2px;font-weight:800;color:var(--ink);
  margin-bottom:26px;
}
.hero h1 .grad{
  background:linear-gradient(100deg,#1152d4 8%,#00a8c6 58%,#00c2d7 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.sub{font-size:19.5px;color:var(--muted);max-width:640px;margin-bottom:38px;line-height:1.8}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:42px}
.hero-meta{display:flex;gap:44px;flex-wrap:wrap}
.hero-meta div b{display:block;font-size:32px;font-weight:800;color:var(--blue-deep);letter-spacing:-.5px}
.hero-meta div span{font-size:14px;color:var(--muted);letter-spacing:.4px}

.hero-right{position:relative}
.hero-visual{
  width:100%;height:auto;display:block;border-radius:24px;
  box-shadow:var(--shadow-lg);border:1px solid #e5eefb;background:#fff;
}

/* ---------- 数据条 ---------- */
.stats-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:38px 20px;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:40px;font-weight:800;letter-spacing:-.8px;
  background:linear-gradient(135deg,#0a2f7a,#0a8fbe);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:14.5px;color:var(--muted);letter-spacing:.5px}

/* ---------- 通用 section ---------- */
section{padding:108px 0}
.sec-head{max-width:840px;margin:0 auto 62px}
.sec-head.left{margin-left:0;text-align:left}
.sec-tag{
  display:inline-block;font-size:13.5px;font-weight:700;letter-spacing:2.6px;
  color:var(--blue);margin-bottom:16px;text-transform:uppercase;
}
.sec-tag::before{content:"";display:inline-block;width:24px;height:2px;background:var(--cyan);vertical-align:middle;margin-right:10px}
.sec-head h2{font-size:46px;line-height:1.3;font-weight:800;letter-spacing:-.8px;color:var(--ink);margin-bottom:16px}
.sec-head h2 em{font-style:normal;color:var(--blue)}
.sec-head p{font-size:17.5px;color:var(--muted)}
.bg-soft{background:var(--bg-soft)}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pain{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 30px;
  transition:.28s;position:relative;overflow:hidden;
}
.pain::after{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,#1152d4,#00c2d7);transition:.35s;
}
.pain:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe2fb}
.pain:hover::after{width:100%}
.pain .no{
  font-size:13px;font-weight:800;color:#b9cdea;letter-spacing:1px;margin-bottom:14px;
}
.pain h3{font-size:20px;font-weight:700;margin-bottom:11px;color:var(--ink);display:flex;align-items:center;gap:10px}
.pain h3 i{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:#eef5ff;color:#1152d4;border:1px solid #dfeafc;flex:0 0 34px;transition:.28s;
}
.pain h3 i svg{width:19px;height:19px;display:block}
.pain:hover h3 i{background:linear-gradient(135deg,#1152d4,#00a8c6);color:#fff;border-color:transparent}
.pain p{font-size:15.5px;color:var(--muted);line-height:1.8}

/* ---------- 业务 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.svc{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px 32px;
  position:relative;transition:.3s;
}
.svc:hover{box-shadow:var(--shadow);transform:translateY(-5px);border-color:#c9dffb}
.svc .ico{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:linear-gradient(135deg,#e8f2ff,#ddf7fb);color:var(--blue);
  border:1px solid #dbeafc;margin-bottom:18px;
  box-shadow:inset 0 1px 0 #fff,0 6px 16px rgba(17,82,212,.10);
  transition:.3s;
}
.svc .ico svg{width:28px;height:28px;display:block}
.svc:hover .ico{
  background:linear-gradient(135deg,#1152d4,#00a8c6);color:#fff;border-color:transparent;
  box-shadow:0 10px 24px rgba(17,82,212,.28);
}
.svc-en{
  font-size:11.5px;letter-spacing:2.4px;color:#9ab0c8;font-weight:700;
  margin-bottom:7px;text-transform:uppercase;
}
.svc h3{font-size:22px;font-weight:700;margin-bottom:11px}
.svc p{font-size:15.5px;color:var(--muted);margin-bottom:16px}
.svc ul li{font-size:15px;color:var(--ink-2);padding-left:17px;position:relative;margin-bottom:7px}
.svc ul li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.svc .idx{position:absolute;right:24px;top:20px;font-size:40px;font-weight:800;color:#f0f5fd;letter-spacing:-2px}

/* ---------- 方法论 ---------- */
.method-wrap{display:grid;grid-template-columns:.88fr 1.12fr;gap:64px;align-items:center}
.flow{position:relative}
.flow-item{display:flex;gap:20px;padding:18px 0;position:relative}
.flow-item::before{
  content:"";position:absolute;left:24px;top:58px;bottom:-6px;width:2px;
  background:linear-gradient(180deg,#c9ddfb,#e6f7f9);
}
.flow-item:last-child::before{display:none}
.flow-item .n{
  width:50px;height:50px;flex:0 0 50px;border-radius:13px;display:grid;place-items:center;
  background:#fff;border:1.5px solid #d5e5fb;color:var(--blue);font-weight:800;font-size:16px;
  box-shadow:var(--shadow-sm);z-index:1;
}
.flow-item.active .n{background:linear-gradient(135deg,#1152d4,#00c2d7);color:#fff;border-color:transparent}
.flow-item h4{font-size:19px;font-weight:700;margin-bottom:5px}
.flow-item p{font-size:15px;color:var(--muted)}
.metric-card{
  background:linear-gradient(160deg,#081f47 0%,#0b2f68 55%,#0a4a6e 100%);
  border-radius:22px;padding:40px;color:#fff;position:relative;overflow:hidden;
}
.metric-card::after{
  content:"";position:absolute;right:-80px;top:-80px;width:250px;height:250px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,194,215,.35),transparent 68%);
}
.metric-card h3{font-size:23px;margin-bottom:7px;position:relative}
.metric-card > p{font-size:15px;color:#a9c6e8;margin-bottom:26px;position:relative}
.metric-list{display:grid;grid-template-columns:1fr 1fr;gap:13px;position:relative}
.metric{
  background:rgba(255,255,255,.07);border:1px solid rgba(120,190,255,.22);
  border-radius:12px;padding:15px 17px;
}
.metric b{display:block;font-size:17px;margin-bottom:4px}
.metric span{font-size:13px;color:#9dbde0;line-height:1.55;display:block}
.metric.plus{grid-column:span 2;background:rgba(0,194,215,.12);border-color:rgba(0,194,215,.4)}

/* ---------- 优势 ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.adv{
  display:flex;gap:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;transition:.28s;
}
.adv:hover{border-color:#c9dffb;box-shadow:var(--shadow)}
.adv .ico{
  width:56px;height:56px;flex:0 0 56px;border-radius:16px;display:grid;place-items:center;
  background:linear-gradient(135deg,#eaf3ff,#e0f6fb);color:var(--blue);
  border:1px solid #dbeafc;box-shadow:inset 0 1px 0 #fff,0 6px 16px rgba(17,82,212,.10);
  transition:.3s;
}
.adv .ico svg{width:28px;height:28px;display:block}
.adv:hover .ico{
  background:linear-gradient(135deg,#1152d4,#00a8c6);color:#fff;border-color:transparent;
  box-shadow:0 10px 24px rgba(17,82,212,.26);
}
.adv h3{font-size:19.5px;font-weight:700;margin-bottom:8px}
.adv p{font-size:15.3px;color:var(--muted)}
.adv.feature{grid-column:span 2;background:linear-gradient(120deg,#f7fbff,#f2fbfd);border-color:#cfe6f7}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.case{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.3s;display:flex;flex-direction:column;
}
.case:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.case .top{
  padding:28px 28px 24px;background:linear-gradient(150deg,#0b2f68,#0d5a8a);color:#fff;position:relative;overflow:hidden;
}
.case .top::after{
  content:"";position:absolute;right:-46px;bottom:-70px;width:190px;height:190px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,194,215,.4),transparent 70%);
}
.case .cat{font-size:12.8px;letter-spacing:1.8px;color:#9fd8ea;margin-bottom:9px;font-weight:600}
.case .top h3{font-size:21px;font-weight:700;margin-bottom:20px;position:relative;line-height:1.5}
.case .kpis{display:flex;gap:28px;position:relative}
.case .kpis div b{display:block;font-size:27px;font-weight:800;letter-spacing:-.5px}
.case .kpis div span{font-size:12.8px;color:#a9c9e6}
.case .body{padding:24px 28px 28px;font-size:15.2px;color:var(--muted);flex:1}
.case .body p{margin-bottom:12px}
.case .body .res{font-size:14.5px;color:var(--blue-deep);font-weight:600;background:#f4f9ff;border-radius:10px;padding:12px 15px}
.case-note{text-align:center;font-size:14px;color:#93a9c2;margin-top:30px}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;position:relative}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px 30px;position:relative;
}
.step-card .no{
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:18px;
  background:linear-gradient(135deg,#1152d4,#00c2d7);color:#fff;margin-bottom:20px;
  box-shadow:0 10px 24px rgba(17,82,212,.25);
}
.step-card h3{font-size:20px;margin-bottom:9px}
.step-card p{font-size:15.3px;color:var(--muted)}
.step-card .time{display:inline-block;margin-top:16px;font-size:13.2px;font-weight:700;color:var(--blue);background:#eef6ff;border-radius:7px;padding:5px 12px}

/* ---------- 新闻 ---------- */
.news-head-row{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:42px;gap:22px;flex-wrap:wrap}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
  display:flex;flex-direction:column;transition:.3s;
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#cfe2fb}
.news-cover{
  height:198px;position:relative;overflow:hidden;
  background:linear-gradient(140deg,#0b2f68,#0d6c9a 60%,#00a8c6);
  display:grid;place-items:center;
}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:.5s}
.news-card:hover .news-cover img{transform:scale(1.05)}
.news-cover .ph{
  color:rgba(255,255,255,.9);font-size:15px;letter-spacing:3px;font-weight:700;
  text-align:center;line-height:2;
}
.news-cover .ph small{display:block;font-size:11px;letter-spacing:5px;opacity:.6}
.news-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;gap:12px;align-items:center;font-size:13px;color:#8ea6c0;margin-bottom:12px}
.news-meta .cat{color:var(--blue);background:#eef6ff;border-radius:5px;padding:2px 9px;font-weight:700}
.news-body h3{font-size:19px;line-height:1.6;font-weight:700;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:var(--blue)}
.news-body p{font-size:15px;color:var(--muted);flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{margin-top:16px;font-size:14.5px;font-weight:600;color:var(--blue)}
.news-empty{padding:70px 20px;text-align:center;color:#9ab0c8;font-size:15px;grid-column:span 3}

/* ---------- 诊断表单 ---------- */
.diag{
  background:
    radial-gradient(760px 440px at 88% 10%,rgba(0,194,215,.16),transparent 62%),
    linear-gradient(155deg,#071c3f 0%,#0a2b60 58%,#083a5c 100%);
  color:#fff;position:relative;overflow:hidden;
}
.diag::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:68px 68px;opacity:.7;
}
.diag .wrap{position:relative;z-index:2;display:grid;grid-template-columns:.92fr 1.08fr;gap:70px;align-items:start}
.diag-txt .sec-tag{color:#67d8e8}
.diag-txt h2{font-size:46px;line-height:1.3;font-weight:800;margin-bottom:18px;letter-spacing:-.6px}
.diag-txt h2 em{font-style:normal;color:#4fd8e8}
.diag-txt p.lead{font-size:17px;color:#a8c6e6;margin-bottom:32px;max-width:520px}
.diag-list li{display:flex;gap:15px;padding:16px 0;border-bottom:1px dashed rgba(140,190,240,.22)}
.diag-list li:last-child{border-bottom:0}
.diag-list .k{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(0,194,215,.15);border:1px solid rgba(0,194,215,.35);color:#5fe0ef;font-size:15px;
}
.diag-list b{display:block;font-size:16.5px;margin-bottom:3px}
.diag-list span{font-size:14.2px;color:#9dbde0}
.form-card{
  background:rgba(255,255,255,.97);border-radius:22px;padding:38px;color:var(--ink);
  box-shadow:0 34px 90px rgba(0,10,30,.42);
}
.form-card h3{font-size:23px;margin-bottom:6px}
.form-card .hint{font-size:14px;color:var(--muted);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14.2px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.field label i{color:#e5484d;font-style:normal}
.field input,.field select,.field textarea{
  width:100%;border:1.5px solid #dde8f6;border-radius:10px;padding:12px 15px;
  font-size:15.5px;background:#fbfdff;transition:.2s;outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(17,82,212,.10);
}
.field textarea{resize:vertical;min-height:92px}
.chip-group{display:flex;flex-wrap:wrap;gap:9px}
.chip-group label{
  display:inline-flex;align-items:center;gap:7px;font-size:13.8px;font-weight:500;
  border:1.5px solid #dde8f6;border-radius:9px;padding:8px 13px;cursor:pointer;
  background:#fbfdff;transition:.18s;margin:0;
}
.chip-group input{display:none}
.chip-group label:hover{border-color:#a9c8f0}
.chip-group input:checked + span{color:var(--blue);font-weight:700}
.chip-group label:has(input:checked){border-color:var(--blue);background:#eef6ff}
.form-tip{font-size:13px;color:#8ea6c0;margin-top:14px;text-align:center}
.form-msg{margin-top:14px;font-size:14.5px;border-radius:10px;padding:12px 15px;display:none}
.form-msg.ok{display:block;background:#e9fbf3;color:#0a7a54;border:1px solid #bfeede}
.form-msg.err{display:block;background:#fff1f1;color:#c02b30;border:1px solid #ffd4d4}
.success-panel{display:none;text-align:center;padding:30px 8px}
.success-panel .ok-ico{
  width:72px;height:72px;border-radius:50%;margin:0 auto 20px;display:grid;place-items:center;
  background:#e9fbf3;color:#0aa06e;font-size:34px;border:2px solid #bfeede;
}
.success-panel h3{font-size:24px;margin-bottom:9px}
.success-panel p{font-size:15px;color:var(--muted);margin-bottom:7px}
.success-panel .code{
  display:inline-block;margin:16px 0 22px;font-size:17px;font-weight:800;color:var(--blue);
  background:#f0f7ff;border:1px dashed #a9c8f0;border-radius:10px;padding:10px 24px;letter-spacing:2px;
}

/* ---------- Footer ---------- */
.site-footer{background:#061733;color:#c4d4e8;padding:76px 0 32px;font-size:15px}
/* 页脚采用 flex + space-between：各栏宽度贴合内容，剩余空间均分，视觉间隔完全均匀 */
.foot-grid{
  display:flex;justify-content:space-between;align-items:flex-start;
  gap:clamp(30px,3.4vw,60px);margin-bottom:50px;
}
.foot-grid>*{flex:0 0 auto;min-width:0}
.foot-grid>.foot-brand{flex:1 1 280px;max-width:362px}
.foot-grid>.qr-col{flex:0 0 146px}
.foot-brand .logo .txt b{color:#fff}
.foot-brand .logo .txt span{color:#7e9ec2}
.foot-brand p{color:#8ba6c4;margin:18px 0 20px;max-width:360px;font-size:14.5px;line-height:1.85}
.foot-social{display:flex;gap:12px}
.foot-social .soc{
  width:40px;height:40px;border-radius:12px;display:block;padding:0;border:0;
  background:transparent;cursor:pointer;line-height:0;text-decoration:none;
  transition:transform .26s,box-shadow .26s,filter .26s,opacity .26s;
}
.foot-social .soc svg{width:40px;height:40px;display:block;border-radius:12px}
.foot-social .soc:hover{
  transform:translateY(-3px);
  box-shadow:0 10px 22px rgba(0,0,0,.42);
  filter:saturate(1.08) brightness(1.03);
}
.foot-social .soc:focus-visible{outline:2px solid #4fa8ff;outline-offset:3px}
/* 未上传二维码时降低存在感，悬停仍显示提示 */
.foot-social .soc.is-off{opacity:.45}
.foot-social .soc.is-off:hover{opacity:.9}

/* ---------- 二维码全屏弹层（点击查看） ---------- */
.qr-pop{position:fixed;inset:0;z-index:300;display:none}
.qr-pop.on{display:block}
.qr-pop-backdrop{position:absolute;inset:0;background:rgba(4,14,30,.74);backdrop-filter:blur(5px)}
.qr-pop-card{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:#fff;border-radius:18px;padding:22px 22px 18px;width:min(320px,84vw);
  text-align:center;box-shadow:0 30px 90px rgba(0,0,0,.5);
  animation:qrIn .26s ease both;
}
@keyframes qrIn{
  from{opacity:0;transform:translate(-50%,-46%) scale(.96)}
  to{opacity:1;transform:translate(-50%,-50%) scale(1)}
}
.qr-pop-x{
  position:absolute;top:10px;right:10px;width:30px;height:30px;border-radius:9px;
  border:1px solid #e6eef8;background:#f5f9fe;color:#5a7595;font-size:13px;cursor:pointer;
  line-height:1;padding:0;
}
.qr-pop-x:hover{background:#eaf2fd;color:#1152d4}
.qr-pop-imgwrap{
  width:214px;height:214px;margin:10px auto 14px;border-radius:12px;
  background:#f4f7fc;display:grid;place-items:center;overflow:hidden;
}
.qr-pop-imgwrap img{width:100%;height:100%;object-fit:contain;display:none}
.qr-pop-empty{font-size:13px;color:#93a9c2}
.qr-pop-name{font-size:16.5px;font-weight:700;color:#0b2a5b;letter-spacing:.3px}
.qr-pop-tip{font-size:12.5px;color:#93a9c2;margin-top:5px}

.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:700}
.site-footer li{margin-bottom:11px;color:#8ba6c4}
.site-footer li a:hover{color:#4fd8e8}
.foot-contact li{display:flex;gap:10px;align-items:flex-start}
.foot-contact i{font-style:normal;color:#4fd8e8}
.foot-bottom{border-top:1px solid rgba(255,255,255,.09);padding-top:24px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13.8px;color:#6f8cae}
.foot-bottom a{color:#8ba6c4}
.foot-bottom a:hover{color:#4fd8e8}

/* ---------- 滚动动画 ---------- */
.reveal{transition:opacity .7s cubic-bezier(.22,.68,.35,1),transform .7s cubic-bezier(.22,.68,.35,1)}
.reveal.pre{opacity:0;transform:translateY(26px)}
.reveal.pre.in{opacity:1;transform:none}

/* ---------- 新闻列表页 ---------- */
.page-hero{
  padding:150px 0 64px;
  background:radial-gradient(760px 340px at 80% 0%,rgba(0,194,215,.14),transparent 65%),linear-gradient(180deg,#f6faff,#fff);
  border-bottom:1px solid var(--line);
}
.page-hero h1{font-size:48px;font-weight:800;letter-spacing:-.7px;margin-bottom:14px}
.page-hero p{color:var(--muted);font-size:17px}
.filter-row{display:flex;gap:12px;flex-wrap:wrap;margin:40px 0 36px}
.filter-row button{
  border:1.5px solid var(--line);background:#fff;border-radius:100px;padding:9px 21px;
  font-size:15px;color:var(--ink-2);cursor:pointer;transition:.2s;font-weight:500;
}
.filter-row button:hover{border-color:#b8d3f5;color:var(--blue)}
.filter-row button.active{background:linear-gradient(135deg,#1152d4,#0a7fd4);color:#fff;border-color:transparent;font-weight:600}
.pager{display:flex;justify-content:center;gap:9px;margin-top:50px}
.pager button{
  min-width:42px;height:42px;border-radius:10px;border:1.5px solid var(--line);background:#fff;
  font-size:15px;cursor:pointer;color:var(--ink-2);
}
.pager button.active{background:var(--blue);color:#fff;border-color:var(--blue);font-weight:700}
.pager button:disabled{opacity:.4;cursor:not-allowed}

/* ---------- 文章页 ---------- */
.article{max-width:940px;margin:0 auto;padding:132px 32px 100px}
.article .cat-row{display:flex;gap:13px;align-items:center;margin-bottom:20px;font-size:14px;color:#8ea6c0}
.article .cat-row .cat{color:var(--blue);background:#eef6ff;border-radius:6px;padding:3px 11px;font-weight:700;font-size:13.5px}
.article h1{font-size:44px;line-height:1.38;font-weight:800;letter-spacing:-.7px;margin-bottom:18px}
.article .meta{display:flex;gap:20px;font-size:14px;color:#8ea6c0;padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:36px;flex-wrap:wrap}
.article .cover{border-radius:18px;overflow:hidden;margin-bottom:36px;box-shadow:var(--shadow)}
.article-body{font-size:18px;line-height:2;color:#22374f}
.article-body p{margin-bottom:22px}
.article-body .lead{font-size:19.5px;color:#33496a;font-weight:500;border-left:4px solid var(--cyan);background:#f7fbff;padding:16px 20px;border-radius:0 11px 11px 0}
.article-body h3{font-size:25px;font-weight:700;margin:40px 0 18px;color:var(--ink);position:relative;padding-left:16px}
.article-body h3::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:4px;border-radius:2px;background:linear-gradient(180deg,#1152d4,#00c2d7)}
.article-body ul{margin:0 0 22px 0}
.article-body li{padding-left:20px;position:relative;margin-bottom:10px}
.article-body li::before{content:"";position:absolute;left:2px;top:13px;width:7px;height:7px;border-radius:2px;background:var(--cyan)}
.article-body blockquote{
  margin:28px 0;padding:22px 26px;background:linear-gradient(120deg,#f4f9ff,#f1fbfd);
  border-left:4px solid var(--blue);border-radius:0 11px 11px 0;font-size:17.5px;color:var(--blue-deep);font-weight:500;
}
.article-body b{color:var(--ink)}
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:54px;padding-top:32px;border-top:1px solid var(--line)}
.article-nav a{border:1px solid var(--line);border-radius:13px;padding:18px 20px;transition:.2s}
.article-nav a:hover{border-color:#c9dffb;background:#f8fbff}
.article-nav span{font-size:13px;color:#8ea6c0;display:block;margin-bottom:6px}
.article-nav b{font-size:16px;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-nav .r{text-align:right}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .hero .wrap,.method-wrap,.diag .wrap{grid-template-columns:1fr}
  .hero h1{font-size:52px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(even){border-right:0}
  .pain-grid,.svc-grid,.case-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
  .foot-grid>.foot-brand{max-width:none}
  .sec-head h2,.diag-txt h2{font-size:38px}
}
@media (max-width:760px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .nav{height:72px}
  .logo-img{height:40px}
  .footer-logo{height:38px}
  .nav-links{
    display:none;position:fixed;top:72px;left:0;right:0;background:#fff;
    flex-direction:column;gap:0;padding:12px 24px 22px;border-bottom:1px solid var(--line);
    box-shadow:0 14px 34px rgba(12,42,90,.10);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 0;width:100%;border-bottom:1px solid #f1f6fc;font-size:16.5px}
  .nav-toggle{display:block}
  .nav-right .btn{display:none}
  .hero{padding:128px 0 70px}
  .hero h1{font-size:38px;letter-spacing:-.5px}
  .hero p.sub{font-size:17px}
  section{padding:70px 0}
  .sec-head h2,.diag-txt h2{font-size:29px}
  .sec-head p{font-size:16px}
  .pain-grid,.svc-grid,.case-grid,.news-grid,.adv-grid,.steps,.metric-list{grid-template-columns:1fr}
  .adv.feature,.metric.plus{grid-column:span 1}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(even){border-right:0}
  .stat b{font-size:32px}
  .hero-meta{gap:28px}
  .form-row{grid-template-columns:1fr}
  .foot-grid{display:grid;grid-template-columns:1fr}
  .article h1{font-size:29px}
  .article{padding-top:110px}
  .article-body{font-size:16.5px}
  .page-hero h1{font-size:32px}
  .article-nav{grid-template-columns:1fr}
  .article-nav .r{text-align:left}
}