*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#0b1020;
  --ink2:#1b2440;
  --brand:#ff3d6e;
  --brand2:#00e0c6;
  --accent:#ffc400;
  --violet:#7b5cff;
  --bg:#f5f7fc;
  --card:#ffffff;
  --line:#e6ebf5;
  --muted:#5b6884;
  --radius:18px;
  --shadow:0 10px 30px rgba(15,25,60,.08);
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(11,16,32,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:19px;letter-spacing:.5px}
.brand img{height:36px;width:auto}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--brand2);box-shadow:0 0 12px var(--brand2)}
.nav-links{display:flex;align-items:center;gap:0}
.nav-links a{color:#c9d3ea;font-size:14px;padding:8px 11px;border-radius:8px;transition:.2s;position:relative}
.nav-links a:hover{color:#fff;background:rgba(255,61,110,.16)}
.nav-cta{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--brand),#ff7a4d);color:#fff!important;padding:10px 20px!important;border-radius:10px;font-weight:700;margin-left:8px}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(255,61,110,.4)}
.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer;padding:4px 8px}

/* Hero 首屏 - 无图片 */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 400px at 85% -10%, rgba(255,61,110,.35), transparent 60%),
    radial-gradient(700px 380px at 5% 20%, rgba(0,224,198,.28), transparent 60%),
    radial-gradient(600px 300px at 50% 120%, rgba(123,92,255,.35), transparent 60%),
    linear-gradient(160deg,#0b1020 0%,#141b34 45%,#1b1338 100%);
  color:#fff;padding:88px 0 96px;
}
.hero::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:48px 48px;mask-image:radial-gradient(circle at 50% 30%,#000 30%,transparent 85%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--brand2);border:1px solid rgba(0,224,198,.4);padding:6px 14px;border-radius:999px;background:rgba(0,224,198,.08)}
.hero h1{font-size:clamp(30px,4.4vw,54px);line-height:1.18;margin:22px 0 18px;font-weight:900;letter-spacing:-.5px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--brand2),var(--accent),var(--brand));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(15px,1.6vw,18px);color:#c6cfe4;max-width:600px;margin-bottom:14px}
.hero-keywords{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 30px}
.hero-keywords span{font-size:13px;color:#dfe6f6;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:5px 13px;border-radius:999px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;font-size:16px;padding:14px 30px;border-radius:12px;border:0;cursor:pointer;transition:.22s;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--brand),#ff7a4d);color:#fff;box-shadow:0 12px 28px rgba(255,61,110,.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,61,110,.55)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.24)}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn:active{transform:scale(.97)}
.hero-panel{position:relative;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:24px;padding:26px;backdrop-filter:blur(8px)}
.hero-panel h3{font-size:15px;color:#9fb0d4;font-weight:600;margin-bottom:16px;letter-spacing:.5px}
.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.metric{background:linear-gradient(150deg,rgba(255,255,255,.1),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:16px;transition:.25s}
.metric:hover{transform:translateY(-4px);border-color:var(--brand2)}
.metric b{display:block;font-size:26px;font-weight:900;background:linear-gradient(90deg,#fff,var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.metric small{font-size:12.5px;color:#a9b6d4}
.model-chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
.model-chips span{font-size:11.5px;color:#cfd8ee;border:1px solid rgba(255,255,255,.16);padding:4px 9px;border-radius:6px;background:rgba(255,255,255,.05)}

/* 通用区块 */
section{padding:80px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 48px}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:2px;color:var(--brand);background:rgba(255,61,110,.1);padding:6px 16px;border-radius:999px;margin-bottom:16px}
.sec-head h2{font-size:clamp(26px,3vw,38px);font-weight:900;letter-spacing:-.5px;line-height:1.25}
.sec-head h2 i{font-style:normal;color:var(--violet)}
.sec-head p{color:var(--muted);margin-top:14px;font-size:16px}
.bg-white{background:#fff}
.bg-dark{background:linear-gradient(160deg,#0b1020,#1b1338);color:#fff}
.bg-dark .sec-head h2,.bg-dark .sec-head p{color:#fff}
.bg-dark .sec-head p{color:#b7c3dd}

/* 数据条 */
.stats{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:-64px;position:relative;z-index:5;overflow:hidden}
.stat{padding:30px 24px;text-align:center;border-right:1px solid var(--line);transition:.25s}
.stat:last-child{border-right:0}
.stat:hover{background:#fdf2f5}
.stat b{display:block;font-size:34px;font-weight:900;background:linear-gradient(120deg,var(--brand),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:14px;color:var(--muted)}

/* 卡片网格 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.28s;position:relative;overflow:hidden}
.card::after{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:linear-gradient(90deg,var(--brand),var(--violet),var(--brand2));transform:scaleX(0);transform-origin:left;transition:.35s}
.card:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(15,25,60,.13);border-color:transparent}
.card:hover::after{transform:scaleX(1)}
.card .ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;background:linear-gradient(135deg,rgba(255,61,110,.12),rgba(123,92,255,.14));margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:10px;font-weight:800}
.card p{color:var(--muted);font-size:14.5px}
.card .more{display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--brand)}
.card .more:hover{letter-spacing:.5px}

/* 场景标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.tag-cloud a{background:#fff;border:1px solid var(--line);padding:10px 20px;border-radius:999px;font-size:14px;font-weight:600;color:var(--ink2);transition:.22s;box-shadow:0 3px 10px rgba(15,25,60,.04)}
.tag-cloud a:hover{background:linear-gradient(135deg,var(--brand),#ff7a4d);color:#fff;border-color:transparent;transform:translateY(-3px);box-shadow:0 12px 24px rgba(255,61,110,.3)}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{background:#fff;border-radius:var(--radius);padding:30px 24px;border:1px solid var(--line);position:relative;transition:.25s}
.step:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;top:18px;right:22px;font-size:38px;font-weight:900;color:rgba(123,92,255,.12)}
.step h4{font-size:17px;margin-bottom:8px;font-weight:800}
.step p{font-size:14px;color:var(--muted)}
.step .bar{height:4px;width:44px;border-radius:4px;background:linear-gradient(90deg,var(--brand),var(--brand2));margin-bottom:16px}

/* 表格 */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);background:#fff}
table{width:100%;border-collapse:collapse;min-width:680px}
th,td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
thead th{background:linear-gradient(135deg,#0b1020,#221a45);color:#fff;font-weight:700}
tbody tr:hover{background:#fdf2f5}
td:first-child{font-weight:700}
.badge-best{background:linear-gradient(135deg,var(--brand),#ff8a4d);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px}

/* 评测卡 */
.rating-card{background:linear-gradient(160deg,#0b1020,#221a45);color:#fff;border-radius:24px;padding:40px;display:grid;grid-template-columns:auto 1fr;gap:36px;align-items:center;margin-bottom:32px}
.rating-score{text-align:center}
.rating-score .num{font-size:64px;font-weight:900;line-height:1;background:linear-gradient(120deg,var(--brand2),var(--accent),var(--brand));-webkit-background-clip:text;background-clip:text;color:transparent}
.rating-score .full{font-size:14px;color:#9fb0d4;margin-top:6px}
.stars{font-size:22px;color:var(--accent);letter-spacing:4px;margin-top:8px}
.rating-text h3{font-size:22px;margin-bottom:10px}
.rating-text p{color:#b7c3dd;font-size:15px}
.rating-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.rating-points div{font-size:13.5px;color:#dfe6f6;display:flex;align-items:center;gap:8px}
.rating-points div::before{content:"✓";color:var(--brand2);font-weight:900}

/* FAQ */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s}
.faq-item:hover{border-color:rgba(255,61,110,.4)}
.faq-q{width:100%;background:none;border:0;text-align:left;padding:20px 24px;font-size:16px;font-weight:700;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-q .sign{width:26px;height:26px;flex:0 0 26px;border-radius:50%;background:rgba(255,61,110,.1);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:18px;transition:.3s;font-weight:700}
.faq-item.open .sign{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--muted);font-size:14.5px}
.faq-a div{padding:0 24px 20px}

/* 评论 */
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s;display:flex;flex-direction:column;gap:14px}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.review-head{display:flex;align-items:center;gap:14px}
.avatar{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;color:#fff;font-size:18px;flex:0 0 48px}
.review-head b{display:block;font-size:15px}
.review-head span{font-size:12.5px;color:var(--muted)}
.review-stars{color:var(--accent);font-size:14px;letter-spacing:2px}
.review-card p{font-size:14.5px;color:#3b4764}

/* 案例 */
.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.3s}
.case-card:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(15,25,60,.14)}
.case-media{aspect-ratio:16/10;overflow:hidden;background:#0b1020}
.case-media img{width:100%;height:100%;object-fit:cover;transition:.5s}
.case-card:hover .case-media img{transform:scale(1.06)}
.case-body{padding:22px}
.case-body h3{font-size:17px;margin-bottom:8px}
.case-body p{font-size:14px;color:var(--muted)}
.case-body .tags{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.case-body .tags span{font-size:12px;background:rgba(123,92,255,.1);color:var(--violet);padding:3px 10px;border-radius:6px;font-weight:600}

/* 时间线 */
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:34px}
.timeline::before{content:"";position:absolute;left:10px;top:6px;bottom:6px;width:3px;border-radius:3px;background:linear-gradient(var(--brand),var(--violet),var(--brand2))}
.tl-item{position:relative;margin-bottom:30px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px}
.tl-item::before{content:"";position:absolute;left:-30px;top:26px;width:15px;height:15px;border-radius:50%;background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(255,61,110,.15)}
.tl-item b{display:block;font-size:16px;margin-bottom:4px}
.tl-item span{font-size:13px;color:var(--brand);font-weight:700}
.tl-item p{font-size:14px;color:var(--muted);margin-top:6px}

/* 服务网络 */
.network{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.net-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;text-align:center;transition:.25s}
.net-item:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(0,224,198,.5)}
.net-item .ic{font-size:28px;margin-bottom:10px}
.net-item b{display:block;font-size:16px;margin-bottom:4px}
.net-item span{font-size:13px;color:var(--muted)}

/* 文章 */
.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s;display:block}
.article:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent}
.article .date{font-size:12.5px;color:var(--brand);font-weight:700;letter-spacing:.5px}
.article h3{font-size:17px;margin:10px 0 8px}
.article p{font-size:14px;color:var(--muted)}
.article .read{margin-top:14px;font-size:14px;font-weight:700;color:var(--violet)}

/* 表单 */
.form-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.form-side h2{font-size:30px;font-weight:900;margin-bottom:16px;line-height:1.3}
.form-side p{color:var(--muted);margin-bottom:24px}
.contact-list{display:flex;flex-direction:column;gap:14px}
.contact-item{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;transition:.2s}
.contact-item:hover{border-color:rgba(255,61,110,.4);transform:translateX(4px)}
.contact-item .ic{width:40px;height:40px;flex:0 0 40px;border-radius:10px;background:linear-gradient(135deg,rgba(255,61,110,.12),rgba(123,92,255,.14));display:flex;align-items:center;justify-content:center;font-size:18px}
.contact-item b{font-size:14px;display:block}
.contact-item span{font-size:13.5px;color:var(--muted);word-break:break-all}
.contact-item img{width:90px;height:90px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.form-card{background:#fff;border-radius:var(--radius);padding:34px;box-shadow:var(--shadow);border:1px solid var(--line)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:14.5px;font-family:inherit;background:#f9fafd;transition:.2s;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(255,61,110,.1)}
.field textarea{min-height:110px;resize:vertical}
.form-tip{font-size:12.5px;color:var(--muted);margin-top:8px}
.form-btn{width:100%;padding:15px;font-size:16px;border-radius:12px}

/* 页脚 */
.site-footer{background:#0b1020;color:#a9b6d4;padding:64px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;margin-bottom:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:#8d9bbd;line-height:1.8}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col a{display:block;font-size:13.5px;color:#8d9bbd;margin-bottom:9px;transition:.2s}
.footer-col a:hover{color:var(--brand2);padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;text-align:center;font-size:13px;color:#6f7d9e}

/* 浮动客服 */
.float-box{position:fixed;right:20px;bottom:24px;z-index:999;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.float-btn{width:52px;height:52px;border-radius:50%;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:22px;box-shadow:0 8px 24px rgba(11,16,32,.25);transition:.25s;background:#fff;color:var(--brand)}
.float-btn:hover{transform:translateY(-3px) scale(1.05)}
.float-btn.primary{background:linear-gradient(135deg,var(--brand),#ff7a4d);color:#fff}
.back-top{opacity:0;pointer-events:none}
.back-top.show{opacity:1;pointer-events:auto}
.kefu-panel{position:fixed;right:20px;bottom:88px;width:230px;background:#fff;border-radius:16px;padding:18px;box-shadow:0 20px 44px rgba(11,16,32,.2);z-index:998;display:none;text-align:center}
.kefu-panel.show{display:block;animation:fadeUp .3s ease}
.kefu-panel img{width:100%;border-radius:10px;margin-bottom:10px}
.kefu-panel b{font-size:14px;display:block}
.kefu-panel span{font-size:12.5px;color:var(--muted)}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* 动画 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.active{opacity:1;transform:none}

/* 响应式 */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .network{grid-template-columns:repeat(2,1fr)}
  .article-list{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .form-wrap{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .rating-card{grid-template-columns:1fr;text-align:center}
  .rating-points{text-align:left}
}
@media(max-width:820px){
  .nav-links{
    position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:rgba(11,16,32,.98);padding:12px 16px;gap:0;
    max-height:0;overflow:hidden;transition:max-height .35s ease;
  }
  .nav-links.open{max-height:520px;padding:12px 16px 20px}
  .nav-links a{padding:12px 10px}
  .nav-cta{margin-left:0;margin-top:8px;justify-content:center}
  .menu-toggle{display:block}
}
@media(max-width:700px){
  section{padding:56px 0}
  .container{padding:0 18px}
  .hero{padding:56px 0 72px}
  .grid-3,.grid-2,.steps,.network,.article-list,.footer-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr;margin-top:-48px}
  .stat{padding:22px 14px}
  .stat b{font-size:26px}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(3){border-top:1px solid var(--line)}
  .stat:nth-child(4){border-top:1px solid var(--line)}
  .rating-card{padding:28px 22px}
  .rating-score .num{font-size:52px}
  .form-card{padding:24px 18px}
  .float-btn{width:48px;height:48px;font-size:20px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}