:root{
  --ink:#0d2438;
  --ink-soft:#456179;
  --brand:#1558e0;
  --brand-2:#00a9a0;
  --line:#e2ecfa;
  --card:#ffffff;
  --shadow-sm:0 8px 20px rgba(17,52,98,.06);
  --shadow-md:0 16px 36px rgba(17,52,98,.10);
  --radius:16px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  line-height:1.7;
  background-color:#f3f8ff;
  background-image:
    radial-gradient(900px 520px at 8% -6%, #dcebff 0%, rgba(220,235,255,0) 62%),
    radial-gradient(820px 460px at 92% 2%, #d8f5f1 0%, rgba(216,245,241,0) 58%),
    linear-gradient(180deg,#f2f8ff 0%,#f7fbff 45%,#eef6ff 100%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;}
p{margin:0;}
a{color:var(--brand);text-decoration:none;}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(21,88,224,.09);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px;flex-wrap:wrap;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.ai-page-logo{width:38px;display:block;}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.5px;}
.nav-links{display:flex;align-items:center;gap:0;}
.nav-links a{
  display:block;padding:9px 11px;font-size:14.5px;color:var(--ink-soft);
  border-radius:9px;white-space:nowrap;transition:color .22s ease,background .22s ease;
}
.nav-links a:hover{color:var(--brand);background:#eef4ff;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease;
}
.btn-primary{background:linear-gradient(135deg,#1a63ff,#0aa7d8);color:#fff;box-shadow:0 10px 22px rgba(21,88,224,.26);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(21,88,224,.32);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#cfe0fb;}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-sm);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:40px;padding:0 9px;border:1px solid #d9e6f8;border-radius:10px;
  background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--brand);border-radius:2px;}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0;}
.band{background:rgba(255,255,255,.6);border-top:1px solid rgba(21,88,224,.07);border-bottom:1px solid rgba(21,88,224,.07);}
.section-head{max-width:760px;margin:0 auto 42px;text-align:center;}
.section-head h2{font-size:clamp(23px,3.1vw,33px);margin-bottom:12px;letter-spacing:.5px;}
.section-head p{color:var(--ink-soft);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:999px;
  background:#e7f0ff;color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.6px;
  margin-bottom:16px;
}
.grid{display:grid;gap:20px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}

/* ---------- 首屏 ---------- */
.hero{padding:70px 0 66px;position:relative;overflow:hidden;}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,#cfe4ff 0%,rgba(207,228,255,0) 70%);
  pointer-events:none;
}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:46px;align-items:center;position:relative;z-index:1;}
.hero h1{font-size:clamp(30px,4.3vw,46px);letter-spacing:.5px;margin-bottom:18px;}
.hero-sub{font-size:16.5px;color:var(--ink-soft);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:0;}
.hero-tags li{
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--ink-soft);font-size:13.5px;box-shadow:var(--shadow-sm);
}
.hero-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 16px;
  box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.metric strong{display:block;font-size:26px;color:var(--brand);line-height:1.2;margin-bottom:2px;}
.metric span{font-size:13px;color:var(--ink-soft);}

/* ---------- 关于我们 ---------- */
.about-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:44px;align-items:start;}
.about-text p{color:var(--ink-soft);margin-bottom:16px;font-size:15.6px;}
.feature-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;}
.feature-list li{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 18px 15px 46px;
  position:relative;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease;
}
.feature-list li:hover{transform:translateX(4px);box-shadow:var(--shadow-md);}
.feature-list li::before{
  content:"";position:absolute;left:18px;top:22px;width:12px;height:12px;border-radius:4px;
  background:linear-gradient(135deg,#1a63ff,#00c2b2);
}
.feature-list strong{display:block;font-size:15.2px;margin-bottom:2px;}
.feature-list span{font-size:13.8px;color:var(--ink-soft);}

/* ---------- 服务卡片 ---------- */
.service-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;
  box-shadow:var(--shadow-sm);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  display:flex;flex-direction:column;gap:8px;
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#c6dcfb;}
.service-card .tag-dot{
  width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,#e4efff,#d6f6f2);
  display:flex;align-items:center;justify-content:center;margin-bottom:4px;
  font-size:13px;font-weight:700;color:var(--brand);
}
.service-card h3{font-size:17px;}
.service-card p{font-size:14.2px;color:var(--ink-soft);}

/* ---------- 一站式制作 ---------- */
.studio-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-bottom:30px;}
.shot{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;box-shadow:var(--shadow-sm);transition:transform .28s ease,box-shadow .28s ease;
}
.shot:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.shot-media{aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#eaf2fd;}
.shot-media img{width:100%;height:100%;object-fit:cover;display:block;}
.shot figcaption{margin-top:12px;font-size:14.5px;font-weight:600;color:var(--ink);text-align:center;}
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;}
.scene-item{
  background:rgba(255,255,255,.85);border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;font-size:14.3px;color:var(--ink-soft);
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.scene-item strong{color:var(--ink);font-weight:600;}
.scene-item:hover{background:#fff;color:var(--brand);transform:translateY(-3px);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag-cloud span{
  padding:6px 14px;border-radius:999px;background:#eaf2ff;color:#20518f;
  font-size:13.2px;border:1px solid #d6e5fb;
}

/* ---------- 行业方案 ---------- */
.solution-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow-sm);border-left:4px solid #1558e0;
  transition:transform .26s ease,box-shadow .26s ease;
}
.solution-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.solution-card h3{font-size:16.5px;margin-bottom:8px;}
.solution-card p{font-size:14.2px;color:var(--ink-soft);}

/* ---------- 服务网络 ---------- */
.network-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.network-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;
  box-shadow:var(--shadow-sm);text-align:center;transition:transform .26s ease,box-shadow .26s ease;
}
.network-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.network-item h3{font-size:16px;color:var(--brand);margin-bottom:4px;}
.network-item p{font-size:13.8px;color:var(--ink-soft);}

/* ---------- 标准流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;
  box-shadow:var(--shadow-sm);position:relative;transition:transform .26s ease,box-shadow .26s ease;
}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:12px;background:linear-gradient(135deg,#1a63ff,#00c2b2);color:#fff;
  font-weight:700;font-size:15px;margin-bottom:14px;
}
.step h3{font-size:16px;margin-bottom:6px;}
.step p{font-size:13.8px;color:var(--ink-soft);}

/* ---------- 案例中心 ---------- */
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 14px 20px;box-shadow:var(--shadow-sm);
  transition:transform .28s ease,box-shadow .28s ease;
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.case-media{aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:#eaf2fd;}
.case-media img{width:100%;height:100%;object-fit:cover;display:block;}
.case-card h3{font-size:16px;margin:14px 4px 6px;}
.case-card p{font-size:14px;color:var(--ink-soft);padding:0 4px;}

/* ---------- 评论 ---------- */
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:12px;
  transition:transform .26s ease,box-shadow .26s ease;
}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.review-card p{font-size:14.3px;color:var(--ink-soft);}
.review-user{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:6px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#dbe9ff,#d3f5f0);color:var(--brand);font-weight:700;font-size:15px;
}
.review-user strong{display:block;font-size:14.2px;}
.review-user span{font-size:12.8px;color:#6b839a;}

/* ---------- 对比评测 ---------- */
.score-panel{
  display:grid;grid-template-columns:280px 1fr;gap:24px;align-items:stretch;margin-bottom:26px;
}
.score-box{
  background:linear-gradient(150deg,#12386f,#1558e0 62%,#0aa7d8);
  border-radius:18px;padding:26px 22px;color:#fff;text-align:center;
  box-shadow:0 18px 38px rgba(21,88,224,.28);
}
.score-box strong{display:block;font-size:44px;line-height:1.1;letter-spacing:1px;}
.score-box em{font-style:normal;font-size:14px;opacity:.9;}
.score-stars{font-size:18px;letter-spacing:3px;margin:10px 0 6px;color:#ffd873;}
.score-box p{font-size:13.5px;color:rgba(255,255,255,.9);}
.score-notes{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--shadow-sm);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px 22px;
}
.score-notes div{font-size:14.2px;color:var(--ink-soft);position:relative;padding-left:20px;}
.score-notes div::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,#1a63ff,#00c2b2);
}
.score-notes strong{color:var(--ink);}
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
}
table{width:100%;border-collapse:collapse;min-width:680px;}
th,td{padding:14px 16px;text-align:left;font-size:14.2px;border-bottom:1px solid #eef4fc;}
thead th{background:#eef5ff;color:var(--ink);font-weight:700;white-space:nowrap;}
tbody tr:hover{background:#f8fbff;}
tbody td:first-child{font-weight:600;color:var(--ink);}
td.hl{color:var(--brand);font-weight:600;}

/* ---------- 价格参考 ---------- */
.price-note{margin-top:16px;font-size:13.6px;color:#6b839a;text-align:center;}

/* ---------- 表单 ---------- */
.form-card{
  max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-radius:20px;padding:32px;box-shadow:var(--shadow-md);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--ink);font-weight:600;}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:14.5px;font-weight:400;color:var(--ink);
  padding:12px 14px;border:1px solid #d8e6f8;border-radius:11px;background:#f9fcff;
  outline:none;transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(21,88,224,.1);
}
.field textarea{resize:vertical;min-height:110px;}
.field-full{grid-column:1 / -1;}
.btn-block{width:100%;margin-top:20px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-item[open]{border-color:#c6dcfb;box-shadow:var(--shadow-md);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:17px 52px 17px 20px;position:relative;
  font-size:15.3px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand);transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-item .faq-answer{padding:0 20px 18px;font-size:14.3px;color:var(--ink-soft);}

/* ---------- 文章 ---------- */
.article-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
}
.article-dynamic{
  background:#f4f9ff;border:1px dashed #c8dcf7;border-radius:12px;
  padding:16px;color:var(--ink-soft);font-size:14px;margin-bottom:20px;
}
.article-links{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.article-links a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 16px;border:1px solid var(--line);border-radius:11px;
  font-size:14.2px;color:var(--ink);background:#fbfdff;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.article-links a:hover{background:#eef6ff;border-color:#bcd7fa;transform:translateX(4px);}
.article-links a::after{content:"→";color:var(--brand);}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:start;}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;
  box-shadow:var(--shadow-sm);
}
.contact-card h3{font-size:18px;margin-bottom:14px;}
.contact-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
.contact-list li{font-size:14.4px;color:var(--ink-soft);}
.contact-list strong{color:var(--ink);display:inline-block;min-width:88px;}
.qr-box{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;}
.qr-box img{width:170px;max-width:100%;height:auto;border-radius:12px;border:1px solid var(--line);display:block;}
.qr-box span{font-size:13.6px;color:var(--ink-soft);}
.agent-box{
  margin-top:20px;background:#eef6ff;border:1px solid #d3e5fb;border-radius:14px;padding:18px;
}
.agent-box h4{font-size:15.2px;margin-bottom:6px;}
.agent-box p{font-size:13.8px;color:var(--ink-soft);}

/* ---------- 页脚 ---------- */
.site-footer{background:#ffffff;border-top:1px solid var(--line);color:var(--ink);padding:34px 0 26px;}
.footer-top{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap;align-items:flex-start;}
.footer-brand{max-width:360px;}
.footer-name{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.footer-desc{font-size:13.6px;color:#5b7691;}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;}
.footer-links-title{font-size:13.6px;color:#5b7691;font-weight:600;}
.footer-links a{font-size:13.6px;color:#20518f;}
.footer-links a:hover{color:var(--brand);text-decoration:underline;}
.footer-bottom{
  margin-top:22px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#5b7691;
}
.footer-bottom a{color:#20518f;}

/* ---------- 浮动 ---------- */
.float-service{position:fixed;right:18px;bottom:88px;z-index:95;display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.service-toggle{
  width:54px;height:54px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,#1a63ff,#0aa7d8);color:#fff;font-size:13px;font-weight:700;
  box-shadow:0 12px 26px rgba(21,88,224,.35);
  transition:transform .25s ease,box-shadow .25s ease;
}
.service-toggle:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(21,88,224,.42);}
.service-pop{
  display:none;width:206px;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px;box-shadow:var(--shadow-md);text-align:center;
}
.service-pop.show{display:block;animation:popIn .25s ease;}
@keyframes popIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}
.service-pop img{width:130px;max-width:100%;height:auto;border-radius:10px;display:block;margin:0 auto 10px;}
.service-pop p{font-size:13px;color:var(--ink-soft);margin-bottom:4px;}
.back-top{
  position:fixed;right:18px;bottom:20px;z-index:95;width:54px;height:54px;border-radius:50%;
  border:1px solid #d3e5fb;background:#fff;color:var(--brand);font-size:12px;font-weight:700;
  cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);
  box-shadow:var(--shadow-sm);transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
}
.back-top.show{opacity:1;visibility:visible;transform:none;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease;}
.reveal.visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1020px){
  .nav-links a{padding:9px 8px;font-size:14px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .about-grid{grid-template-columns:1fr;gap:28px;}
  .score-panel{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:980px){
  .nav-toggle{display:flex;}
  .nav-links{
    display:none;order:3;width:100%;flex-direction:column;align-items:stretch;
    gap:0;padding:8px 0 14px;margin-top:8px;border-top:1px solid #e8f0fb;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 6px;}
  .grid-3,.network-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .score-notes{grid-template-columns:1fr;}
}
@media (max-width:760px){
  .section{padding:58px 0;}
  .hero{padding:48px 0 50px;}
  .grid-3,.grid-2,.network-grid,.steps,.scene-grid,.studio-grid,.form-grid{grid-template-columns:1fr;}
  .hero-panel{grid-template-columns:repeat(2,minmax(0,1fr));}
  .form-card{padding:22px;}
  .footer-top{flex-direction:column;gap:18px;}
  .brand-name{font-size:16px;}
}
@media (max-width:420px){
  .metric strong{font-size:22px;}
  .btn{padding:12px 20px;font-size:14.5px;}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}