:root{
  --mint-50:#f2fbf6;
  --mint-100:#e3f7ec;
  --mint-200:#c6efd8;
  --mint-400:#5fce9a;
  --mint-500:#35b97f;
  --mint-600:#229c68;
  --mint-700:#1a7d54;
  --ink-900:#132b22;
  --ink-800:#1d3b30;
  --ink-600:#3d5a4e;
  --ink-400:#6b8479;
  --line:#d7ecdf;
  --white:#ffffff;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(26,125,84,.06);
  --shadow-md:0 10px 30px rgba(26,125,84,.10);
  --shadow-lg:0 18px 50px rgba(26,125,84,.16);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  color:var(--ink-800);
  background:
    radial-gradient(1200px 500px at 85% -5%, #d9f5e5 0%, rgba(217,245,229,0) 60%),
    radial-gradient(900px 420px at 0% 20%, #eefaf3 0%, rgba(238,250,243,0) 55%),
    linear-gradient(180deg,#f7fdfa 0%, #f2fbf6 40%, #eefaf4 100%);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
section{position:relative;}
.sec{padding:64px 0;}
.sec-head{max-width:760px;margin:0 auto 36px;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--mint-700);background:var(--mint-100);
  border:1px solid var(--mint-200);
  padding:5px 14px;border-radius:999px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint-500);}
h1,h2,h3{color:var(--ink-900);line-height:1.3;letter-spacing:.01em;}
h2{font-size:clamp(23px,3vw,32px);font-weight:700;}
h3{font-size:17px;font-weight:700;}
.sec-head p{color:var(--ink-600);font-size:15px;margin-top:12px;}
.lead{color:var(--ink-600);font-size:15px;}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,253,250,.88);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(198,239,216,.7);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:66px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand .ai-page-logo{height:36px;width:auto;}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:.02em;white-space:nowrap;}
.nav-links{
  display:flex;align-items:center;gap:0;flex-wrap:nowrap;
}
.nav-links a{
  display:block;font-size:14px;color:var(--ink-600);
  padding:8px 11px;border-radius:8px;white-space:nowrap;
  transition:.2s;
}
.nav-links a:hover{color:var(--mint-700);background:var(--mint-100);}
.nav-cta{
  flex-shrink:0;display:inline-flex;align-items:center;gap:6px;
  background:linear-gradient(135deg,var(--mint-500),var(--mint-600));
  color:#fff;font-size:14px;font-weight:600;
  padding:10px 20px;border-radius:999px;
  box-shadow:0 6px 18px rgba(53,185,127,.30);
  transition:.25s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(53,185,127,.38);}
.menu-toggle{
  display:none;background:var(--white);border:1px solid var(--line);
  width:42px;height:42px;border-radius:10px;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink-800);border-radius:2px;transition:.25s;}
.menu-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle.active span:nth-child(2){opacity:0;}
.menu-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== Hero ===== */
.hero{padding:70px 0 60px;overflow:hidden;}
.hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;
  gap:44px;align-items:center;
}
.hero-copy h1{
  font-size:clamp(28px,4.2vw,46px);font-weight:800;
  letter-spacing:.01em;margin:14px 0 18px;
}
.hero-copy h1 em{
  font-style:normal;color:var(--mint-600);
  position:relative;display:inline-block;
}
.hero-copy h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:8px;
  background:linear-gradient(90deg,rgba(95,206,154,.35),rgba(95,206,154,.05));
  border-radius:4px;z-index:-1;
}
.hero-copy p.hero-desc{font-size:16px;color:var(--ink-600);max-width:540px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 22px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:13px 28px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;transition:.25s;
}
.btn-primary{
  background:linear-gradient(135deg,#3ec58a,#1e9364);color:#fff;
  box-shadow:0 8px 22px rgba(53,185,127,.32);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(53,185,127,.42);}
.btn-ghost{
  background:var(--white);color:var(--mint-700);
  border-color:var(--mint-200);box-shadow:var(--shadow-sm);
}
.btn-ghost:hover{background:var(--mint-50);transform:translateY(-3px);}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;}
.hero-tags span{
  font-size:13px;color:var(--mint-700);background:#eafaf1;
  border:1px solid var(--mint-200);padding:5px 13px;border-radius:999px;
}
.hero-panel{
  background:linear-gradient(160deg,#ffffff 0%,#f0fcf6 100%);
  border:1px solid var(--line);border-radius:24px;
  padding:26px;box-shadow:var(--shadow-md);
  position:relative;overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(95,206,154,.22),transparent 70%);
  top:-70px;right:-70px;
}
.hero-panel h3{font-size:15px;color:var(--ink-600);font-weight:600;margin-bottom:18px;position:relative;}
.hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px;position:relative;}
.hstat{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:16px 14px;transition:.25s;
}
.hstat:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);}
.hstat b{display:block;font-size:22px;color:var(--mint-700);font-weight:800;letter-spacing:.01em;}
.hstat span{font-size:12.5px;color:var(--ink-400);}
.hero-panel .mini-note{
  margin-top:18px;font-size:13px;color:var(--ink-400);
  border-top:1px dashed var(--line);padding-top:14px;position:relative;
}
@keyframes floatUp{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:translateY(0);}}
.hero-copy>*{animation:floatUp .7s ease both;}
.hero-copy>*:nth-child(2){animation-delay:.08s;}
.hero-copy>*:nth-child(3){animation-delay:.16s;}
.hero-copy>*:nth-child(4){animation-delay:.24s;}
.hero-copy>*:nth-child(5){animation-delay:.32s;}
.hero-panel{animation:floatUp .8s .2s ease both;}

/* ===== 通用卡片 ===== */
.card{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:24px;
  box-shadow:var(--shadow-sm);transition:.28s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--mint-200);}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}

/* 数据条 */
.metric-band{
  background:linear-gradient(120deg,#1e9364,#2fae79 55%,#48c793);
  border-radius:24px;padding:36px 30px;color:#fff;
  box-shadow:0 18px 40px rgba(34,156,104,.28);
}
.metric-band .grid-4{gap:22px;}
.metric-item{text-align:center;}
.metric-item b{display:block;font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:.02em;}
.metric-item span{font-size:13.5px;opacity:.9;}

/* 服务卡片 */
.service-card{position:relative;overflow:hidden;}
.service-card .ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#e3f7ec,#c6efd8);color:var(--mint-700);
  font-size:19px;font-weight:800;margin-bottom:16px;
}
.service-card h3{margin-bottom:8px;}
.service-card p{font-size:14px;color:var(--ink-600);}

/* 场景标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
.tag-cloud span{
  font-size:13.5px;color:var(--ink-600);background:#fff;
  border:1px solid var(--line);padding:7px 15px;border-radius:999px;
  transition:.22s;cursor:default;
}
.tag-cloud span:hover{color:var(--mint-700);border-color:var(--mint-400);background:var(--mint-50);transform:translateY(-2px);}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px 20px;position:relative;transition:.28s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.step .num{
  width:34px;height:34px;border-radius:10px;
  background:var(--mint-100);color:var(--mint-700);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;margin-bottom:14px;
}
.step h3{font-size:15.5px;margin-bottom:6px;}
.step p{font-size:13.5px;color:var(--ink-600);}

/* 对比表 */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);
  border-radius:var(--radius-md);background:#fff;box-shadow:var(--shadow-sm);
}
table{width:100%;border-collapse:collapse;min-width:680px;}
th,td{padding:15px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line);}
thead th{background:var(--mint-50);color:var(--ink-900);font-weight:700;font-size:14px;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#f8fdfa;}
td.best{color:var(--mint-700);font-weight:600;}
.rating-box{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  margin-bottom:24px;padding:22px 26px;
  background:linear-gradient(120deg,#ffffff,#eafaf1);
  border:1px solid var(--mint-200);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
}
.rating-score{display:flex;align-items:baseline;gap:6px;}
.rating-score b{font-size:40px;font-weight:800;color:var(--mint-600);line-height:1;}
.rating-score span{font-size:14px;color:var(--ink-400);}
.rating-stars{color:#f2b93b;font-size:20px;letter-spacing:2px;}
.rating-text{font-size:14px;color:var(--ink-600);}

/* 评论 */
.review-card{display:flex;flex-direction:column;gap:14px;}
.review-head{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:#fff;font-size:16px;
  background:linear-gradient(135deg,#5fce9a,#229c68);
}
.review-head b{display:block;font-size:14.5px;color:var(--ink-900);}
.review-head span{font-size:12.5px;color:var(--ink-400);}
.review-card p{font-size:14px;color:var(--ink-600);}
.review-stars{color:#f2b93b;font-size:14px;letter-spacing:2px;}

/* 案例 */
.case-card{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.case-media{overflow:hidden;background:var(--mint-50);}
.case-media img{width:100%;height:auto;object-fit:cover;transition:transform .5s;}
.case-card:hover .case-media img{transform:scale(1.045);}
.case-body{padding:20px 22px 24px;}
.case-body h3{font-size:16px;margin-bottom:8px;}
.case-body p{font-size:13.5px;color:var(--ink-600);}
.case-tag{
  display:inline-block;font-size:12px;color:var(--mint-700);
  background:var(--mint-100);padding:3px 10px;border-radius:999px;margin-bottom:10px;
}

/* Token比价 */
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px 22px;text-align:center;transition:.28s;position:relative;overflow:hidden;
}
.price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.price-card .plan{font-size:14px;color:var(--ink-400);margin-bottom:6px;}
.price-card .amount{font-size:30px;font-weight:800;color:var(--mint-700);margin-bottom:4px;}
.price-card .amount small{font-size:13px;font-weight:500;color:var(--ink-400);}
.price-card ul{text-align:left;margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.price-card li{font-size:13.5px;color:var(--ink-600);padding-left:18px;position:relative;}
.price-card li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:50%;background:var(--mint-400);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;transition:.25s;}
.faq-item:hover{border-color:var(--mint-200);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:15px;font-weight:600;color:var(--ink-900);font-family:inherit;
}
.faq-q .plus{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  background:var(--mint-100);color:var(--mint-700);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;transition:.25s;
}
.faq-item.open .plus{transform:rotate(45deg);background:var(--mint-500);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--ink-600);}

/* 文章 */
.article-card{display:flex;flex-direction:column;gap:10px;}
.article-card .date{font-size:12.5px;color:var(--ink-400);}
.article-card h3{font-size:15.5px;line-height:1.5;}
.article-card p{font-size:13.5px;color:var(--ink-600);}
.article-card a.more{font-size:13.5px;color:var(--mint-700);font-weight:600;display:inline-flex;align-items:center;gap:4px;margin-top:2px;}
.article-card a.more:hover{gap:8px;}

/* 表单 */
.form-wrap{
  background:linear-gradient(160deg,#ffffff,#f3fcf7);
  border:1px solid var(--line);border-radius:22px;
  padding:34px 30px;box-shadow:var(--shadow-md);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-800);}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14px;color:var(--ink-800);
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:11px 14px;outline:none;transition:.2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--mint-400);box-shadow:0 0 0 3px rgba(95,206,154,.16);
}
.field textarea{resize:vertical;min-height:110px;}
.form-tip{font-size:12.5px;color:var(--ink-400);margin-top:14px;}

/* 联系信息 */
.contact-card{display:flex;flex-direction:column;gap:16px;}
.contact-row{display:flex;align-items:flex-start;gap:12px;}
.contact-row .ci{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  background:var(--mint-100);color:var(--mint-700);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.contact-row b{display:block;font-size:14px;color:var(--ink-900);}
.contact-row span{font-size:13.5px;color:var(--ink-600);word-break:break-all;}
.qr-box{text-align:center;padding-top:6px;}
.qr-box img{
  width:150px;height:150px;object-fit:contain;margin:0 auto;
  border:1px solid var(--line);border-radius:12px;background:#fff;padding:6px;
}
.qr-box p{font-size:12.5px;color:var(--ink-400);margin-top:8px;}

/* 友情链接 */
.links-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
.links-cloud a{
  font-size:13.5px;color:var(--ink-600);background:#fff;
  border:1px solid var(--line);padding:7px 15px;border-radius:999px;transition:.22s;
}
.links-cloud a:hover{color:var(--mint-700);border-color:var(--mint-400);transform:translateY(-2px);}

/* Footer */
.site-footer{
  background:#123026;color:#c9e6d8;
  padding:48px 0 24px;margin-top:10px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
  padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer h4{font-size:14px;color:#ffffff;font-weight:700;margin-bottom:14px;}
.site-footer p{font-size:13.5px;color:#a9cbbd;line-height:1.8;}
.site-footer ul{display:flex;flex-direction:column;gap:9px;}
.site-footer ul a{font-size:13.5px;color:#a9cbbd;transition:.2s;}
.site-footer ul a:hover{color:#6fe0ad;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.footer-brand .ai-page-logo{height:34px;width:auto;}
.footer-brand b{font-size:16px;color:#fff;}
.footer-bottom{
  padding-top:20px;display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:12.5px;color:#8fb3a5;}
.footer-bottom a{color:#8fb3a5;}
.footer-bottom a:hover{color:#6fe0ad;}

/* 悬浮客服 */
.float-service{position:fixed;right:18px;bottom:84px;z-index:70;display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.float-btn{
  width:52px;height:52px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,#3ec58a,#1e9364);color:#fff;
  font-size:20px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px rgba(34,156,104,.36);transition:.25s;
}
.float-btn:hover{transform:translateY(-3px) scale(1.04);}
.float-pop{
  width:200px;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px;box-shadow:var(--shadow-lg);
  display:none;
}
.float-pop.show{display:block;animation:floatUp .3s ease both;}
.float-pop img{width:150px;height:150px;object-fit:contain;margin:0 auto;border-radius:8px;}
.float-pop p{font-size:12.5px;color:var(--ink-600);text-align:center;margin-top:6px;line-height:1.6;}
.back-top{
  width:52px;height:52px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--mint-700);cursor:pointer;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-sm);transition:.25s;opacity:0;pointer-events:none;
}
.back-top.show{opacity:1;pointer-events:auto;}
.back-top:hover{transform:translateY(-3px);}

/* 渐入动画 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* 响应式 */
@media(max-width:1024px){
  .nav-links{display:none;}
  .menu-toggle{display:flex;}
  .nav-cta{display:none;}
  .nav-mobile{
    display:none;flex-direction:column;gap:4px;padding:12px 0 18px;
    border-top:1px solid var(--line);margin-top:6px;
  }
  .nav-mobile.show{display:flex;}
  .nav-mobile a{font-size:14.5px;color:var(--ink-700);padding:10px 12px;border-radius:8px;}
  .nav-mobile a:hover{background:var(--mint-100);color:var(--mint-700);}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:760px){
  .sec{padding:46px 0;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .hero-actions{gap:10px;}
  .btn{padding:12px 22px;font-size:14px;width:100%;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .metric-band{padding:28px 20px;}
  .float-service{right:12px;bottom:72px;}
  .float-btn,.back-top{width:46px;height:46px;font-size:17px;}
}
@media(max-width:480px){
  .grid-4{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .rating-box{padding:18px;}
  .rating-score b{font-size:32px;}
}