*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#14202e;
  --ink-2:#43536a;
  --ink-3:#7a8a9e;
  --line:#e2eaf3;
  --brand:#0f6bff;
  --brand-2:#00c2b2;
  --brand-soft:#eaf2ff;
  --warm:#fff8ec;
  --bg:#f6f9fe;
  --card:#ffffff;
  --radius:18px;
  --shadow:0 12px 32px rgba(17,60,120,.08);
  --shadow-hover:0 20px 46px rgba(17,60,120,.16);
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1100px 620px at 8% -8%, #e3f0ff 0%, rgba(227,240,255,0) 62%),
    radial-gradient(900px 560px at 92% 6%, #e6fbf6 0%, rgba(230,251,246,0) 60%),
    linear-gradient(180deg,#f7fafe 0%,#f2f7fd 46%,#f6f9fe 100%);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}
section{padding:64px 0}
h1,h2,h3,h4{line-height:1.3;letter-spacing:-.2px}
h2{font-size:30px;font-weight:800}
h3{font-size:19px;font-weight:700}
p{color:var(--ink-2)}
.sec-head{max-width:760px;margin-bottom:34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);border:1px solid #d6e6ff;
  padding:6px 14px;border-radius:999px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2)}
.sec-head p{margin-top:12px;font-size:15.5px}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(226,234,243,.9);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:70px;flex-wrap:nowrap;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand .ai-page-logo{height:34px;width:auto;max-width:150px;object-fit:contain}
.brand-txt strong{display:block;font-size:16px;font-weight:800;letter-spacing:.5px;line-height:1.2}
.brand-txt span{display:block;font-size:11px;color:var(--ink-3);letter-spacing:1.6px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end;flex:1 1 auto}
.nav-links a{
  font-size:14px;font-weight:600;color:var(--ink-2);
  padding:9px 11px;border-radius:10px;transition:.22s;white-space:nowrap;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  background:linear-gradient(120deg,var(--brand),#2f8dff);
  color:#fff!important;padding:10px 18px!important;border-radius:999px!important;
  font-size:14px;font-weight:700;box-shadow:0 8px 20px rgba(15,107,255,.28);
  transition:.22s;white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(15,107,255,.36)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  border-radius:12px;background:#fff;cursor:pointer;flex:0 0 auto;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}

/* ===== Hero ===== */
.hero{padding:70px 0 60px;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(15,107,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(15,107,255,.05) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(660px 380px at 30% 10%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(660px 380px at 30% 10%,#000 0%,transparent 78%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start;
}
.hero h1{font-size:44px;font-weight:800;letter-spacing:-1px}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand) 0%,#12b7a8 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:18px;font-size:16.5px;color:var(--ink-2);max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.hero-tags span{
  font-size:13px;font-weight:600;color:#1c4f8f;
  background:#fff;border:1px solid #dcebfb;padding:6px 13px;border-radius:999px;
  box-shadow:0 4px 12px rgba(17,60,120,.05);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;align-items:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:14px;font-size:15px;font-weight:700;
  border:none;cursor:pointer;transition:.24s;text-align:center;
}
.btn-primary{
  background:linear-gradient(120deg,#0f6bff,#2f8dff);
  color:#fff;box-shadow:0 14px 30px rgba(15,107,255,.3);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 40px rgba(15,107,255,.4)}
.btn-ghost{
  background:#fff;color:var(--ink);border:1px solid #d9e6f5;
  box-shadow:0 6px 16px rgba(17,60,120,.06);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px)}
.hero-note{margin-top:18px;font-size:13.5px;color:var(--ink-3)}

/* 数据指标卡 */
.hero-metrics{
  display:grid;grid-template-columns:1fr;gap:14px;
  background:linear-gradient(160deg,#ffffff 0%,#f4f9ff 100%);
  border:1px solid #e3eefb;border-radius:22px;padding:22px;
  box-shadow:var(--shadow);
}
.metric-main{
  background:linear-gradient(130deg,#0f2c55,#123f7a);
  border-radius:16px;padding:20px;color:#fff;
}
.metric-main .k{font-size:12.5px;letter-spacing:2px;color:#9fc4f5;font-weight:700}
.metric-main .v{font-size:26px;font-weight:800;margin-top:6px;line-height:1.25}
.metric-main .d{font-size:13px;color:#c2d9f7;margin-top:6px}
.metric-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.metric-cell{
  background:#fff;border:1px solid #e6effa;border-radius:14px;padding:14px;
  transition:.24s;
}
.metric-cell:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(17,60,120,.1);border-color:#cfe3ff}
.metric-cell .n{font-size:20px;font-weight:800;color:var(--brand)}
.metric-cell .t{font-size:12.5px;color:var(--ink-3);margin-top:2px}

/* ===== 关于我们 ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.about-copy p+p{margin-top:14px}
.about-points{display:grid;gap:12px;margin-top:24px}
.about-point{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;
  transition:.24s;
}
.about-point:hover{transform:translateX(4px);border-color:#cfe3ff;box-shadow:var(--shadow)}
.about-point b{display:block;font-size:14.5px}
.about-point small{color:var(--ink-3);font-size:13px}
.dot{
  flex:0 0 auto;width:10px;height:10px;border-radius:50%;margin-top:7px;
  background:linear-gradient(130deg,var(--brand),var(--brand-2));
  box-shadow:0 0 0 4px rgba(15,107,255,.1);
}
.about-visual{
  background:linear-gradient(150deg,#eef6ff,#f7fffd);
  border:1px solid #e0effc;border-radius:22px;padding:26px;
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.about-visual::before{
  content:"";position:absolute;width:220px;height:220px;border-radius:50%;
  right:-70px;top:-70px;background:radial-gradient(circle,#bfe0ff,transparent 70%);
}
.about-visual h3{position:relative;z-index:2;margin-bottom:14px}
.chain{display:grid;gap:10px;position:relative;z-index:2}
.chain-item{
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid #e6effa;border-radius:12px;padding:12px 14px;font-size:14px;font-weight:600;
}
.chain-item i{
  font-style:normal;width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:800;
  color:#fff;background:linear-gradient(130deg,#0f6bff,#20b3a5);
}

/* ===== 服务能力 ===== */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.svc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;transition:.26s;position:relative;overflow:hidden;
}
.svc-card::after{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:.3s;
}
.svc-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#d3e6ff}
.svc-card:hover::after{width:100%}
.svc-ico{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#eaf2ff,#e9fbf7);color:var(--brand);
  font-weight:800;font-size:16px;margin-bottom:14px;
}
.svc-card h3{font-size:16.5px;margin-bottom:8px}
.svc-card p{font-size:13.8px;color:var(--ink-2)}
.svc-meta{margin-top:12px;font-size:12.5px;color:var(--brand);font-weight:700}

/* ===== 一站式制作（时间线） ===== */
.timeline{
  display:grid;grid-template-columns:repeat(5,1fr);gap:14px;position:relative;
}
.tl-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 16px;
  position:relative;transition:.26s;
}
.tl-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#cfe3ff}
.tl-num{
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;color:#fff;background:linear-gradient(130deg,#0f6bff,#17b8a6);
  margin-bottom:12px;
}
.tl-item h3{font-size:15px;margin-bottom:6px}
.tl-item p{font-size:13px;color:var(--ink-3)}

/* ===== 行业方案 ===== */
.plan-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.plan-card{
  display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  transition:.26s;
}
.plan-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:#cfe3ff}
.plan-card h3{font-size:16.5px;margin-bottom:6px}
.plan-card p{font-size:13.6px}
.plan-badge{
  font-size:12px;font-weight:700;color:#0d6a4f;background:#e6fbf2;
  border:1px solid #c8f0e1;border-radius:999px;padding:6px 12px;white-space:nowrap;
}

/* ===== 服务网络 ===== */
.net-wrap{
  background:linear-gradient(150deg,#ffffff,#f2f9ff);
  border:1px solid #e2eefb;border-radius:24px;padding:30px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center;
  box-shadow:var(--shadow);
}
.net-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.net-item{
  background:#fff;border:1px solid #e6effa;border-radius:12px;padding:12px 14px;
  font-size:13.8px;font-weight:600;display:flex;align-items:center;gap:8px;
}
.net-item::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);flex:0 0 auto}
.net-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.net-tags span{
  font-size:12.5px;font-weight:600;color:#334c6b;background:#fff;
  border:1px solid #e0ebf8;padding:5px 12px;border-radius:999px;
}
.net-qrcode{
  background:#fff;border:1px solid #e6effa;border-radius:18px;padding:20px;text-align:center;
}
.net-qrcode img{width:150px;height:150px;object-fit:contain;margin:0 auto 12px;border-radius:10px}
.net-qrcode b{display:block;font-size:14px}
.net-qrcode small{color:var(--ink-3);font-size:12.5px}

/* ===== 标准流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 18px;
  transition:.26s;
}
.step:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#cfe3ff}
.step .st-dot{
  width:8px;height:8px;border-radius:50%;background:var(--brand);margin-bottom:14px;
  box-shadow:0 0 0 5px rgba(15,107,255,.1);
}
.step h3{font-size:15px;margin-bottom:6px}
.step p{font-size:13px;color:var(--ink-3)}

/* ===== 案例中心 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.26s;display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#cfe3ff}
.case-media{width:100%;background:#eef4fb;overflow:hidden;aspect-ratio:16/10;display:flex;align-items:center;justify-content:center}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-media.square{aspect-ratio:1/1}
.case-media.square img{object-fit:contain;background:#fff}
.case-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}
.case-body h3{font-size:15.5px}
.case-body p{font-size:13.4px;color:var(--ink-2)}
.case-tag{font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-soft);border-radius:8px;padding:3px 9px;align-self:flex-start}

/* ===== 对比评测 ===== */
.rate-panel{
  display:grid;grid-template-columns:.85fr 1.15fr;gap:26px;align-items:start;
}
.rate-card{
  background:linear-gradient(150deg,#0f2c55,#134a8c 60%,#0d6f86);
  color:#fff;border-radius:22px;padding:28px;box-shadow:0 20px 44px rgba(13,50,100,.24);
}
.rate-card .rc-label{font-size:13px;letter-spacing:2px;color:#a9cdf7;font-weight:700}
.rate-card .rc-score{font-size:52px;font-weight:800;line-height:1.1;margin-top:8px}
.rate-card .rc-score small{font-size:16px;font-weight:600;color:#b9d6f8;margin-left:6px}
.rate-card .rc-stars{margin-top:10px;font-size:20px;letter-spacing:4px;color:#ffd166}
.rate-card .rc-desc{font-size:13.5px;color:#c9def7;margin-top:12px;line-height:1.7}
.rate-card .rc-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.rate-card .rc-badges span{
  font-size:12px;font-weight:600;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24);padding:5px 11px;border-radius:999px;color:#eaf3ff;
}
.table-wrap{
  background:#fff;border:1px solid var(--line);border-radius:20px;overflow:auto;
  box-shadow:var(--shadow);
}
table{width:100%;border-collapse:collapse;min-width:520px;font-size:14px}
thead th{
  background:#f2f8ff;color:#123a68;font-weight:700;text-align:left;
  padding:14px 16px;border-bottom:1px solid #e2eefb;white-space:nowrap;
}
tbody td{padding:13px 16px;border-bottom:1px solid #eef4fb;color:var(--ink-2);vertical-align:top}
tbody tr:last-child td{border-bottom:none}
tbody tr{transition:.2s}
tbody tr:hover{background:#f8fbff}
td.hl{color:#0d5bd1;font-weight:700}

/* ===== 需求匹配（表单） ===== */
.form-section{
  background:linear-gradient(160deg,#ffffff,#f1f8ff);
  border:1px solid #e2eefb;border-radius:24px;padding:32px;
  box-shadow:var(--shadow);
}
.form-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:start}
.form-info .chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.form-info .chip-row span{
  font-size:12.5px;font-weight:600;color:#274d7c;background:#fff;
  border:1px solid #dbe9f8;padding:6px 12px;border-radius:999px;
}
.form-contact{display:grid;gap:10px;margin-top:22px}
.form-contact div{
  font-size:13.6px;color:var(--ink-2);background:#fff;border:1px solid #e6effa;
  border-radius:12px;padding:11px 14px;display:flex;gap:10px;align-items:center;
}
.form-contact b{color:var(--ink);font-weight:700;flex:0 0 auto}
form{display:grid;gap:14px}
.field{display:grid;gap:6px}
.field label{font-size:13.5px;font-weight:700;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14px;color:var(--ink);
  background:#fff;border:1px solid #dbe8f6;border-radius:12px;padding:12px 14px;
  transition:.2s;outline:none;
}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(15,107,255,.12);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
form .btn{width:100%;margin-top:4px}
.form-hint{font-size:12.5px;color:var(--ink-3);text-align:center}

/* ===== Token 比价 ===== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  transition:.26s;position:relative;
}
.price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#cfe3ff}
.price-card.feature{border-color:#bcd8ff;background:linear-gradient(160deg,#f5faff,#ffffff)}
.price-card .pc-name{font-size:15px;font-weight:800}
.price-card .pc-sub{font-size:12.5px;color:var(--ink-3);margin-top:4px}
.price-card .pc-price{font-size:26px;font-weight:800;color:var(--brand);margin:14px 0 4px}
.price-card .pc-price small{font-size:13px;color:var(--ink-3);font-weight:600}
.price-card ul{list-style:none;display:grid;gap:8px;margin-top:14px}
.price-card li{font-size:13.4px;color:var(--ink-2);padding-left:18px;position:relative}
.price-card li::before{
  content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(130deg,var(--brand),var(--brand-2));
}
.pc-flag{
  position:absolute;right:16px;top:16px;font-size:11.5px;font-weight:700;
  background:#e8f7f2;color:#0d6a4f;border:1px solid #c8f0e1;border-radius:999px;padding:4px 10px;
}

/* ===== 评论 ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  transition:.26s;display:flex;flex-direction:column;gap:12px;
}
.review:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#cfe3ff}
.review .stars{color:#f5a623;font-size:14px;letter-spacing:2px}
.review p{font-size:13.8px;color:var(--ink-2);flex:1}
.review .who{display:flex;align-items:center;gap:10px;padding-top:12px;border-top:1px dashed #e6eef8}
.review .avatar{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;color:#fff;
  background:linear-gradient(130deg,#0f6bff,#18b5a4);
}
.review .who b{display:block;font-size:13.5px}
.review .who small{color:var(--ink-3);font-size:12px}

/* ===== 帮助中心 / FAQ ===== */
.faq-wrap{display:grid;grid-template-columns:.75fr 1.25fr;gap:30px;align-items:start}
.help-list{display:grid;gap:10px;margin-top:18px}
.help-list a{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  background:#fff;border:1px solid #e6effa;border-radius:12px;padding:12px 15px;
  font-size:13.8px;font-weight:600;color:var(--ink);transition:.22s;
}
.help-list a:hover{border-color:#cfe3ff;color:var(--brand);transform:translateX(4px)}
.help-list a span{color:var(--brand);font-weight:800}
.faq{display:grid;gap:10px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.24s;
}
.faq-item.open{border-color:#c9e0ff;box-shadow:var(--shadow)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;font-family:inherit;
  padding:16px 18px;font-size:14.5px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.faq-q .ic{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;transition:.25s;
}
.faq-item.open .ic{background:var(--brand);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 18px 16px;font-size:13.8px;color:var(--ink-2)}

/* ===== AI百科 / 资讯 ===== */
.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.art-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  transition:.26s;display:flex;flex-direction:column;gap:10px;
}
.art-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#cfe3ff}
.art-card .meta{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:1px}
.art-card h3{font-size:15.5px}
.art-card p{font-size:13.4px;color:var(--ink-2)}
.art-card .more{font-size:13px;font-weight:700;color:var(--brand);margin-top:auto}

/* ===== 联系我们 / 加盟 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px;
  box-shadow:var(--shadow);transition:.26s;
}
.contact-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.contact-card h3{font-size:18px;margin-bottom:8px}
.contact-card p{font-size:13.8px}
.contact-lines{display:grid;gap:10px;margin-top:16px}
.contact-lines div{
  display:flex;gap:10px;align-items:center;font-size:13.8px;color:var(--ink-2);
  background:#f6faff;border:1px solid #e6effa;border-radius:12px;padding:10px 14px;
}
.contact-lines b{color:var(--ink);flex:0 0 auto;font-weight:700}
.contact-lines a{color:var(--brand);font-weight:600}
.join-card{
  background:linear-gradient(155deg,#102f59,#134a8c 55%,#0d6f86);
  color:#fff;border-radius:22px;padding:28px;box-shadow:0 20px 44px rgba(13,50,100,.22);
}
.join-card h3{font-size:19px;margin-bottom:10px}
.join-card p{color:#c8ddf6;font-size:13.8px}
.join-card ul{list-style:none;display:grid;gap:9px;margin-top:16px}
.join-card li{font-size:13.6px;color:#e4f0ff;padding-left:20px;position:relative}
.join-card li::before{
  content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;
  background:#5ff0d6;
}
.join-card .btn{margin-top:20px;background:#fff;color:#0d3e73;box-shadow:0 10px 24px rgba(0,0,0,.18)}
.join-card .btn:hover{transform:translateY(-3px);background:#f2f8ff}

/* ===== 标签云 ===== */
.tagcloud{display:flex;flex-wrap:wrap;gap:9px}
.tagcloud span{
  font-size:13px;font-weight:600;color:#2b4a70;background:#fff;
  border:1px solid #dfebf8;border-radius:999px;padding:7px 14px;transition:.22s;
}
.tagcloud span:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}

/* ===== 页脚 ===== */
.site-footer{
  background:#0e2237;color:#c3d5e8;margin-top:0;padding:44px 0 20px;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.foot-brand .ai-page-logo{height:34px;width:auto;max-width:150px;object-fit:contain;margin-bottom:12px}
.foot-brand p{color:#9eb5cc;font-size:13.4px;max-width:300px}
.foot-col h4{color:#fff;font-size:14.5px;margin-bottom:12px;font-weight:700}
.foot-col a,.foot-col span{display:block;font-size:13.2px;color:#a9c0d6;padding:4px 0;transition:.2s}
.foot-col a:hover{color:#5ff0d6}
.foot-bottom{
  margin-top:30px;padding-top:16px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:#8fa7bf;
}
.foot-bottom a{color:#a9c0d6}
.foot-bottom a:hover{color:#5ff0d6}

/* ===== 浮动客服 & 返回顶部 ===== */
.float-bar{position:fixed;right:18px;bottom:24px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-btn{
  width:48px;height:48px;border-radius:14px;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;
  background:#fff;color:var(--brand);box-shadow:0 10px 24px rgba(17,60,120,.18);
  transition:.24s;position:relative;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(17,60,120,.26)}
.float-btn.primary{background:linear-gradient(130deg,#0f6bff,#19b6a6);color:#fff}
.to-top{opacity:0;pointer-events:none}
.to-top.show{opacity:1;pointer-events:auto}
.kf-pop{
  position:absolute;right:60px;bottom:0;width:210px;background:#fff;border-radius:16px;
  padding:14px;box-shadow:0 18px 40px rgba(17,60,120,.22);border:1px solid #e6effa;
  opacity:0;pointer-events:none;transform:translateY(8px);transition:.24s;
}
.kf-pop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.kf-pop img{width:100%;border-radius:10px;margin-bottom:8px}
.kf-pop b{display:block;font-size:13px;color:var(--ink)}
.kf-pop small{display:block;font-size:12px;color:var(--ink-3);margin-top:2px}

/* ===== 动画 ===== */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:36px}
  .about-grid,.net-wrap,.form-grid,.rate-panel,.faq-wrap,.contact-grid{grid-template-columns:1fr}
  .svc-grid,.case-grid,.price-grid,.review-grid,.art-grid{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-toggle{display:flex}
  .nav-links{
    position:absolute;left:0;right:0;top:70px;
    background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 14px;
    max-height:0;overflow:hidden;transition:max-height .3s ease;box-shadow:0 20px 30px rgba(17,60,120,.08);
  }
  .nav-links.open{max-height:520px;overflow:auto}
  .nav-links a{padding:11px 6px;border-radius:8px}
  .nav-cta{margin-top:8px;justify-content:center}
  .nav-wrap{position:relative}
}
@media (max-width:720px){
  section{padding:48px 0}
  .hero{padding:44px 0 40px}
  .hero h1{font-size:29px}
  .hero-lead{font-size:15px}
  h2{font-size:23px}
  .svc-grid,.case-grid,.price-grid,.review-grid,.art-grid,.plan-grid,.metric-row,.net-list,.form-row,.foot-grid{grid-template-columns:1fr}
  .timeline,.steps{grid-template-columns:1fr}
  .btn{padding:13px 20px;width:100%}
  .hero-actions{gap:10px}
  .form-section{padding:22px}
  .rate-card .rc-score{font-size:42px}
  .float-bar{right:12px;bottom:16px}
  .float-btn{width:44px;height:44px;border-radius:12px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}