/* ============================================================
   5 个扩展页面 (cases / process / advantages / faq / about) 样式
   ============================================================ */

/* ---------- 通用 ext-hero 英雄区 ---------- */
.ext-hero{position:relative;height:560px;display:flex;align-items:center;background:linear-gradient(135deg,#04162e 0%,#0a3a6b 60%,#06325c 100%);color:#fff;overflow:hidden}
.ext-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,22,46,.82) 0%,rgba(4,22,46,.55) 45%,rgba(4,22,46,.25) 100%);z-index:1}
.ext-hero .hero-bg{position:absolute;inset:0;z-index:0}
.ext-hero .hero-bg img{width:100%;height:100%;object-fit:cover;display:block}
.ext-hero .wrap{position:relative;z-index:2;width:100%}
.ext-hero .tag{display:inline-block;background:rgba(4,22,46,.45);color:#fff;font-size:12px;font-weight:600;padding:6px 14px;border-radius:3px;margin-bottom:18px;letter-spacing:1.5px;backdrop-filter:blur(8px);text-shadow:0 1px 3px rgba(0,0,0,.6)}
.ext-hero h1{font-size:42px;font-weight:700;line-height:1.2;margin-bottom:16px;max-width:880px;letter-spacing:.5px;text-shadow:0 2px 12px rgba(0,0,0,.75),0 1px 4px rgba(0,0,0,.6)}
.ext-hero .lead{font-size:17px;color:rgba(255,255,255,.92);max-width:880px;line-height:1.7;margin-bottom:36px;text-shadow:0 1px 6px rgba(0,0,0,.65)}
.ext-hero .hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:30px}
.ext-hero .hero-stats>div{flex:0 0 auto}
.ext-hero .hero-stats b{display:block;font-size:32px;font-weight:800;color:#fff;line-height:1;margin-bottom:6px;text-shadow:0 2px 8px rgba(0,0,0,.6)}
.ext-hero .hero-stats span{font-size:13px;color:rgba(255,255,255,.78);letter-spacing:1px;text-shadow:0 1px 4px rgba(0,0,0,.55)}

/* ---------- 案例页 ---------- */
.ind-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.ind-btn{padding:8px 18px;border:1px solid var(--line);background:#fff;border-radius:20px;font-size:13px;color:var(--ink);cursor:pointer;transition:.2s}
.ind-btn:hover{border-color:var(--blue);color:var(--blue)}
.ind-btn.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.3s;position:relative;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-6px);box-shadow:0 14px 32px rgba(0,91,172,.15);border-color:transparent}
.case-card .pic{height:180px;position:relative;overflow:hidden}
.case-card .pic img{width:100%;height:100%;object-fit:cover;display:block}
.case-card .pic .tag-tag{position:absolute;left:16px;top:16px;z-index:2}
.case-card .pic .industry-tag{position:absolute;right:16px;top:16px;z-index:2}
.case-card .pic::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.4) 100%)}
.case-card .tag-tag{position:absolute;left:16px;top:16px;background:rgba(255,255,255,.92);color:var(--blue);font-size:11px;font-weight:700;padding:4px 10px;border-radius:3px;letter-spacing:1px;z-index:1}
.case-card .industry-tag{position:absolute;right:16px;top:16px;background:rgba(0,0,0,.4);color:#fff;font-size:11px;padding:4px 10px;border-radius:3px;backdrop-filter:blur(4px);z-index:1}
.case-card .body{padding:24px;flex:1;display:flex;flex-direction:column}
.case-card .client{font-size:12px;color:var(--muted);margin-bottom:8px}
.case-card h3{font-size:18px;color:var(--ink);margin-bottom:12px;line-height:1.4}
.case-card .pain{font-size:13px;color:var(--ink-2);margin-bottom:6px;line-height:1.6}
.case-card .sol{font-size:13px;color:var(--muted);margin-bottom:16px;line-height:1.6}
.case-card .kpi{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.case-card .kpi b{font-size:14px;color:var(--blue);font-weight:700}
.case-card .kpi a{font-size:13px;color:var(--blue);font-weight:600}

.logo-wall{margin-top:60px}
.logo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}
.logo-cell{height:80px;background:#fff;border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--ink);font-weight:600;transition:.2s}
.logo-cell:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-3px)}

/* ---------- 流程页 ---------- */
.proc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.proc-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px 24px 22px;position:relative;overflow:hidden;transition:.3s}
.proc-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(0,91,172,.12)}
.proc-card .proc-no{width:42px;height:42px;border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;margin-bottom:12px}
.proc-card h3{font-size:18px;margin-bottom:8px;color:var(--ink)}
.proc-card p{color:var(--muted);font-size:13.5px;line-height:1.7;margin-bottom:16px}
.proc-card .proc-tags{display:flex;gap:6px;flex-wrap:wrap}
.proc-card .proc-tag{font-size:11.5px;color:var(--blue);background:#eef5fc;padding:4px 10px;border-radius:12px;font-weight:600}
.proc-card .proc-tag-time{color:#009a8e;background:#e8faf8}
.step-meta{margin-top:14px;display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.step-meta span{display:inline-block;padding:5px 12px;font-size:11.5px;font-weight:600;border-radius:12px;line-height:1.4;min-width:72px;text-align:center}
.step-meta span:nth-child(1){color:#005bac;background:#eef5fc}
.step-meta span:nth-child(2){color:#009a8e;background:#e8faf8}
.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.tool{background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px 16px;text-align:center;font-size:14px;color:var(--ink);font-weight:500;transition:.2s}
.tool:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-3px)}

/* ---------- 优势页 ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.adv-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:36px 30px;position:relative;overflow:hidden;transition:.3s;text-align:center}
.adv-card:hover{transform:translateY(-6px);box-shadow:0 14px 32px rgba(0,91,172,.15)}
.adv-card .adv-no{font-size:32px;color:var(--cyan);margin-bottom:10px;line-height:1}
.adv-card b{display:block;font-size:36px;font-weight:800;color:var(--blue);background:linear-gradient(135deg,var(--blue),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;margin-bottom:8px}
.adv-card h4{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:10px}
.adv-card p{color:var(--muted);font-size:13.5px;line-height:1.7}
.adv-card .adv-bar{position:absolute;bottom:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#005bac,#06b4ea);opacity:0;transition:.3s}
.adv-card:hover .adv-bar{opacity:1}

.test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.test-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:10px;padding:30px 28px;position:relative;transition:.3s}
.test-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.test-card .test-quote{font-size:60px;line-height:1;color:rgba(255,255,255,.2);position:absolute;top:10px;right:20px;font-family:Georgia,serif}
.test-card p{color:rgba(255,255,255,.86);font-size:14px;line-height:1.8;margin-bottom:18px}
.test-card .test-meta strong{display:block;color:#fff;font-size:14px;margin-bottom:2px}
.test-card .test-meta span{font-size:12px;color:rgba(255,255,255,.55)}

.cert-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.cert-cell{height:80px;background:#fff;border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--ink);font-weight:600;text-align:center;padding:0 14px;transition:.2s}
.cert-cell:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-3px)}

/* ---------- FAQ 页 ---------- */
.faq-sec{background:var(--bg)}
.faq-wrap{display:grid;grid-template-columns:280px 1fr;gap:30px;align-items:flex-start}
.faq-side{position:sticky;top:100px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px}
.faq-cat-title-side{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:1px;margin-bottom:14px}
.cat-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.cat-btn{padding:10px 14px;border:none;background:transparent;text-align:left;font-size:14px;color:var(--ink);border-radius:6px;cursor:pointer;transition:.2s}
.cat-btn:hover{background:#f6f6f6;color:var(--blue)}
.cat-btn.active{background:var(--blue);color:#fff}
.faq-cta{background:linear-gradient(135deg,#005bac,#06b4ea);color:#fff;border-radius:10px;padding:22px;margin-top:6px}
.faq-cta h4{font-size:16px;margin-bottom:6px}
.faq-cta p{font-size:13px;color:rgba(255,255,255,.86);margin-bottom:14px;line-height:1.6}
.faq-cta .btn{background:#fff;color:var(--blue);width:100%;justify-content:center}
.faq-cta .btn:hover{background:var(--ink);color:#fff}

.faq-section{margin-bottom:40px}
.faq-cat-title{font-size:22px;font-weight:700;color:var(--ink);margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--blue);display:inline-block}
.faq-list{display:flex;flex-direction:column;gap:12px}

/* ---------- 关于我们 ---------- */
.about-intro{display:grid;grid-template-columns:1.5fr 1fr;gap:50px;align-items:flex-start}
.about-intro-text p{color:var(--ink-2);font-size:15px;line-height:1.85;margin-bottom:14px}
.about-intro-vision{background:linear-gradient(135deg,#005bac,#06b4ea);color:#fff;border-radius:12px;padding:36px 32px}
.about-intro-vision h3{font-size:17px;margin-bottom:8px;color:rgba(255,255,255,.85)}
.about-intro-vision p{font-size:18px;color:#fff;font-weight:600;line-height:1.6;margin-bottom:24px}

.tl-wrap{position:relative;max-width:780px;margin:0 auto;padding:20px 0}
.tl-wrap::before{content:"";position:absolute;left:120px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,#06b4ea,#005bac)}
.tl-item{display:flex;gap:30px;margin-bottom:30px;align-items:flex-start}
.tl-year,.tl-stage{flex:0 0 90px;text-align:right;font-size:18px;font-weight:800;color:var(--blue);line-height:1.2;padding-top:8px;letter-spacing:1px}
.tl-dot{flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:linear-gradient(135deg,#005bac,#06b4ea);border:4px solid #fff;box-shadow:0 0 0 2px var(--line);margin-top:14px;position:relative;left:-1px;z-index:1}
.tl-content{flex:1;background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 22px;box-shadow:0 4px 12px rgba(0,0,0,.04)}
.tl-content h4{font-size:17px;color:var(--ink);margin-bottom:6px}
.tl-content p{color:var(--muted);font-size:13.5px;line-height:1.7}

.val-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.val-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px 24px;transition:.3s}
.val-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(0,91,172,.12)}
.val-card h4{font-size:18px;color:var(--ink);margin-bottom:8px}
.val-card .val-tag{font-size:13px;color:var(--blue);font-weight:600;margin-bottom:12px;padding-bottom:12px;border-bottom:1px dashed var(--line)}
.val-card p{color:var(--muted);font-size:13.5px;line-height:1.7}

/* ---------- 使命 · 愿景 · 信念 · 担当（高大上版） ---------- */
.mv-sec{position:relative;background:linear-gradient(135deg,#04162e 0%,#0a3a6b 50%,#06325c 100%);color:#fff;overflow:hidden}
.mv-sec::before{content:"";position:absolute;inset:0;opacity:.08;background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);background-size:60px 60px}
.mv-sec::after{content:"";position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(6,180,234,.18),transparent 70%);top:-200px;right:-200px}
.mv-sec .wrap{position:relative;z-index:2}
.mv-sec .section-head h2{color:#fff}
.mv-sec .section-head p{color:rgba(255,255,255,.65)}
.mv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:30px}
.mv-card{position:relative;background:linear-gradient(160deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.03) 100%);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:32px 26px;transition:.3s;backdrop-filter:blur(8px);overflow:hidden}
.mv-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--c,#06b4ea),#06b4ea 50%,transparent);opacity:.85}
.mv-card::after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,var(--c,#06b4ea),transparent 70%);opacity:.18;bottom:-90px;right:-90px}
.mv-card:hover{transform:translateY(-8px);border-color:var(--c,#06b4ea);box-shadow:0 20px 40px rgba(0,91,172,.35)}
.mv-card .mv-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--c,#06b4ea),rgba(0,91,172,.5));display:flex;align-items:center;justify-content:center;margin-bottom:18px;box-shadow:0 10px 22px rgba(6,180,234,.32);position:relative;z-index:2}
.mv-card .mv-icon svg{width:28px;height:28px;stroke:#fff}
.mv-card .mv-label{display:inline-block;font-size:11px;font-weight:700;color:var(--c,#06b4ea);letter-spacing:2px;margin-bottom:8px;position:relative;z-index:2}
.mv-card h3{font-size:20px;color:#fff;margin-bottom:14px;font-weight:700;position:relative;z-index:2}
.mv-card .mv-main{font-size:14.5px;color:rgba(255,255,255,.94);font-weight:500;line-height:1.6;margin-bottom:14px;padding-bottom:14px;border-bottom:1px dashed rgba(255,255,255,.18);position:relative;z-index:2}
.mv-card .mv-sub{font-size:13px;color:rgba(255,255,255,.62);line-height:1.75;position:relative;z-index:2}

/* ---------- 文化与价值观（高大上版） ---------- */
.values-sec{background:linear-gradient(180deg,#fff 0%,#f6f9fc 100%);position:relative}
.values-sec::before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:900px;height:900px;border-radius:50%;background:radial-gradient(circle,rgba(6,180,234,.05),transparent 60%);pointer-events:none}
.values-sec .wrap{position:relative;z-index:2}
.values-grid-v2{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:30px}
.value-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px 26px;transition:.3s;overflow:hidden}
.value-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#005bac,#06b4ea);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.value-card:hover{transform:translateY(-8px);box-shadow:0 20px 40px rgba(0,91,172,.18);border-color:transparent}
.value-card:hover::before{transform:scaleX(1)}
.value-card .vc-no{position:absolute;top:14px;right:18px;font-family:Georgia,serif;font-size:46px;font-weight:800;line-height:1;background:linear-gradient(135deg,#005bac,#06b4ea);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.18;transition:.3s}
.value-card:hover .vc-no{opacity:.4}
.value-card .vc-en{display:inline-block;font-size:10px;font-weight:700;color:var(--blue);letter-spacing:2px;margin-bottom:8px}
.value-card h4{font-size:22px;color:var(--ink);margin-bottom:6px;font-weight:700;letter-spacing:1px}
.value-card .vc-tag{font-size:13px;color:var(--blue);font-weight:500;margin-bottom:14px;padding-bottom:14px;border-bottom:1px dashed var(--line)}
.value-card .vc-desc{font-size:13px;color:var(--muted);line-height:1.75}

.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.team-stat{background:#fff;border:1px solid var(--line);border-radius:10px;padding:32px 24px;text-align:center;transition:.3s}
.team-stat:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(0,91,172,.12)}
.team-stat b{display:block;font-size:38px;font-weight:800;color:var(--blue);background:linear-gradient(135deg,var(--blue),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;margin-bottom:8px}
.team-stat span{color:var(--muted);font-size:13.5px}

/* ---------- 流程页 8 节点 4×2 布局 ---------- */
.flow-v2-8{display:grid;grid-template-columns:repeat(4,1fr);gap:36px 20px;padding:40px 0 20px}
.flow-v2-8 .fv2-arrow{display:none}
.flow-v2-8 .fv2-node{flex:none;min-width:0}
.flow-v2-8 .fv2-node h4{font-size:15px}
@media(max-width:900px){.flow-v2-8{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.flow-v2-8{grid-template-columns:1fr}}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .case-grid,.adv-grid,.test-grid,.proc-grid{grid-template-columns:1fr 1fr}
  .logo-grid,.cert-grid{grid-template-columns:repeat(3,1fr)}
  .tools-grid{grid-template-columns:repeat(3,1fr)}
  .val-grid,.team-grid{grid-template-columns:1fr 1fr}
  .mv-grid,.values-grid-v2{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:24px}
  .faq-side{position:static}
  .about-intro{grid-template-columns:1fr;gap:30px}
  .tl-wrap::before{left:50px}
  .tl-year,.tl-stage{flex:0 0 50px;font-size:14px}
}
@media(max-width:900px){
  .ext-hero{height:480px}
  .ext-hero h1{font-size:28px}
  .ext-hero .lead{font-size:15px}
  .case-grid,.adv-grid,.test-grid,.proc-grid,.logo-grid,.cert-grid,.tools-grid,.val-grid,.team-grid,.mv-grid,.values-grid-v2{grid-template-columns:1fr}
  .section{padding:52px 0}
  .section-head h2{font-size:24px}
  .ind-bar{justify-content:center}
  .cat-nav{flex-direction:row;flex-wrap:wrap;gap:6px}
  .cat-btn{flex:1 1 auto;text-align:center}
  .tl-wrap::before{display:none}
  .tl-item{flex-direction:column;gap:10px}
  .tl-year,.tl-stage{text-align:left;flex:0 0 auto}
  .tl-dot{display:none}
  .mv-card{padding:26px 22px}
  .vc-no{font-size:36px;top:10px;right:14px}
}
@media(max-width:640px){
  .ext-hero .hero-stats{gap:20px}
  .ext-hero .hero-stats b{font-size:26px}
  .case-card .pic{height:130px}
  .ind-btn{font-size:12px;padding:6px 14px}
}

/* ---------- 咨询表单提交成功弹窗 ---------- */
.contact-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:1000;justify-content:center;align-items:center;padding:20px}
.contact-modal-content{background:#fff;border-radius:16px;padding:40px 32px;max-width:460px;width:100%;text-align:center;box-shadow:0 30px 60px rgba(0,0,0,.3);animation:modal-pop .25s ease-out}
@keyframes modal-pop{from{transform:scale(.85);opacity:0}to{transform:scale(1);opacity:1}}
.contact-modal-icon{width:64px;height:64px;margin:0 auto 20px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;font-size:36px;line-height:64px;font-weight:700;box-shadow:0 12px 24px rgba(6,180,234,.4)}
.contact-modal-content h3{font-size:22px;color:var(--ink);margin-bottom:14px;font-weight:700}
.contact-modal-content p{color:var(--muted);font-size:15px;line-height:1.75;margin-bottom:24px}
.contact-modal-content p b{color:var(--blue);font-weight:600}
.contact-modal-content button{padding:10px 36px;background:var(--blue);color:#fff;border:none;border-radius:6px;font-size:15px;cursor:pointer;font-weight:600;transition:.2s}
.contact-modal-content button:hover{background:var(--cyan);transform:translateY(-1px)}