*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  font-size:16px;line-height:1.7;color:#1d1836;background-color:#fdf9f7;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(760px 420px at 4% -6%,rgba(255,93,143,.20),transparent 62%),
    radial-gradient(720px 460px at 98% 2%,rgba(123,97,255,.20),transparent 62%),
    radial-gradient(680px 500px at 8% 58%,rgba(255,184,77,.14),transparent 62%),
    radial-gradient(760px 560px at 92% 94%,rgba(34,195,166,.16),transparent 62%),
    linear-gradient(180deg,#fdf9f7,#fbf6f4);
}
img{max-width:100%;display:block;}
a{color:#5b3df5;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
section{scroll-margin-top:88px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;
  text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,background-color .25s ease;
}
.btn-primary{background:linear-gradient(120deg,#ff5d8f,#7b61ff);color:#fff;box-shadow:0 16px 30px -16px rgba(123,97,255,.85);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 36px -16px rgba(123,97,255,.9);}
.btn-ghost{background:#fff;color:#1d1836;border-color:rgba(29,24,54,.14);box-shadow:0 10px 24px -20px rgba(29,24,54,.9);}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(123,97,255,.5);}
.btn:active{transform:translateY(0) scale(.985);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(253,249,247,.9);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(29,24,54,.07);
}
.nav-wrap{display:flex;align-items:center;gap:18px;min-height:68px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#1d1836;font-weight:700;font-size:16px;flex:0 0 auto;}
.ai-page-logo{width:auto;max-height:34px;object-fit:contain;}
.brand-text{white-space:nowrap;letter-spacing:.02em;}
.nav{margin-left:auto;}
.nav-links{display:flex;align-items:center;gap:0;list-style:none;margin:0;padding:0;}
.nav-links a{display:block;padding:9px 11px;border-radius:10px;color:#4a4566;text-decoration:none;font-size:14.5px;font-weight:500;transition:color .25s ease,background-color .25s ease;}
.nav-links a:hover{color:#1d1836;background:rgba(123,97,255,.12);}
.nav-cta{flex:0 0 auto;padding:10px 20px;font-size:14px;}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;
  border:1px solid rgba(29,24,54,.14);background:#fff;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#1d1836;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 首屏 */
.hero{position:relative;overflow:hidden;padding:76px 0 84px;}
.hero-bg{position:absolute;inset:0;pointer-events:none;}
.hero-bg span{position:absolute;display:block;border-radius:50%;opacity:.55;}
.blob-1{width:320px;height:320px;left:-90px;top:-60px;background:radial-gradient(circle at 30% 30%,#ffc0d4,#ff5d8f);animation:floatA 14s ease-in-out infinite alternate;}
.blob-2{width:260px;height:260px;right:-70px;top:40px;background:radial-gradient(circle at 35% 30%,#c9bdff,#7b61ff);animation:floatB 16s ease-in-out infinite alternate;}
.blob-3{width:220px;height:220px;right:18%;bottom:-90px;background:radial-gradient(circle at 30% 30%,#b6f4e6,#22c3a6);animation:floatA 18s ease-in-out infinite alternate;}
@keyframes floatA{from{transform:translate3d(0,0,0) scale(1);}to{transform:translate3d(24px,26px,0) scale(1.06);}}
@keyframes floatB{from{transform:translate3d(0,0,0) scale(1);}to{transform:translate3d(-26px,18px,0) scale(1.08);}}
.hero-copy{position:relative;max-width:840px;margin:0 auto;text-align:center;}
.pill{display:inline-block;padding:7px 18px;border-radius:999px;background:rgba(255,255,255,.85);border:1px solid rgba(123,97,255,.28);color:#5b3df5;font-size:13px;font-weight:600;letter-spacing:.04em;}
.hero h1{margin:20px 0 16px;font-size:clamp(30px,4.6vw,50px);line-height:1.24;letter-spacing:-.01em;color:#1d1836;font-weight:800;}
.hero-lead{margin:0 auto;max-width:700px;font-size:16.5px;color:#4a4566;}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;list-style:none;margin:28px 0 0;padding:0;color:#4a4566;font-size:14px;}
.hero-points li{position:relative;padding-left:20px;}
.hero-points li::before{content:"";position:absolute;left:0;top:50%;width:9px;height:9px;margin-top:-4.5px;border-radius:50%;background:linear-gradient(135deg,#ff5d8f,#7b61ff);}

/* 数据指标 */
.stats{padding:0 0 10px;}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  background:rgba(255,255,255,.82);border:1px solid rgba(29,24,54,.08);
  border-radius:24px;padding:24px 18px;box-shadow:0 26px 50px -40px rgba(45,35,95,.9);
}
.stat{text-align:center;padding:6px 10px;}
.stat strong{display:block;font-size:clamp(22px,3vw,28px);line-height:1.2;color:#1d1836;}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:#6c678a;}
.stat:nth-child(1) strong{color:#e0447a;}
.stat:nth-child(2) strong{color:#6a4dff;}
.stat:nth-child(3) strong{color:#0f9e86;}
.stat:nth-child(4) strong{color:#c9821a;}

/* 通用区块 */
.section{padding:70px 0;}
.section-head{max-width:760px;margin-bottom:38px;}
.eyebrow{display:inline-block;padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:.1em;color:#5b3df5;background:rgba(123,97,255,.13);}
.section-head h2{margin:16px 0 12px;font-size:clamp(23px,3vw,33px);line-height:1.3;color:#1d1836;font-weight:800;}
.section-head p{margin:0;color:#5b5578;font-size:15.5px;}
.section-tint{
  background:linear-gradient(180deg,rgba(255,255,255,.62),rgba(255,255,255,.34));
  border-top:1px solid rgba(29,24,54,.06);border-bottom:1px solid rgba(29,24,54,.06);
}

/* 卡片 */
.card{background:#fff;border:1px solid rgba(29,24,54,.08);border-radius:20px;padding:24px;box-shadow:0 16px 34px -30px rgba(45,35,95,.9);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.card:hover{transform:translateY(-4px);box-shadow:0 26px 46px -30px rgba(45,35,95,.8);border-color:rgba(123,97,255,.3);}
.card h3{margin:0 0 10px;font-size:17px;color:#1d1836;}
.card p{margin:0;color:#5b5578;font-size:14.5px;}

/* 关于我们 */
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.about-card{background:rgba(255,255,255,.9);border:1px solid rgba(29,24,54,.08);border-radius:18px;padding:22px;border-left:4px solid #7b61ff;transition:transform .3s ease,box-shadow .3s ease;}
.about-card:hover{transform:translateY(-4px);box-shadow:0 24px 40px -32px rgba(45,35,95,.9);}
.about-card h3{margin:0 0 8px;font-size:16.5px;color:#1d1836;}
.about-card p{margin:0;font-size:14.5px;color:#5b5578;}
.about-card:nth-child(2){border-left-color:#ff5d8f;}
.about-card:nth-child(3){border-left-color:#22c3a6;}
.about-card:nth-child(4){border-left-color:#ffb84d;}
.about-card:nth-child(5){border-left-color:#38bdf8;}
.about-card:nth-child(6){border-left-color:#7b61ff;}

/* 服务能力 */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.service-card{position:relative;overflow:hidden;padding-top:28px;}
.service-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,var(--c1,#ff5d8f),var(--c2,#7b61ff));}
.service-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(255,93,143,.14),rgba(123,97,255,.14));color:#5b3df5;margin-bottom:14px;}
.service-icon svg{width:22px;height:22px;}

/* 标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.tag{padding:8px 15px;border-radius:999px;background:#fff;border:1px solid rgba(29,24,54,.1);font-size:13.5px;color:#4a4566;transition:transform .25s ease,border-color .25s ease,color .25s ease;}
.tag:hover{transform:translateY(-2px);border-color:rgba(123,97,255,.5);color:#5b3df5;}
.model-title{font-size:15px;font-weight:700;color:#1d1836;margin:0 0 14px;}
.model-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.model-chip{padding:6px 13px;border-radius:10px;background:rgba(255,255,255,.85);border:1px solid rgba(29,24,54,.09);font-size:13px;color:#5b5578;}
.flow-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px;}
.flow-card{background:#fff;border-radius:18px;padding:22px;border:1px solid rgba(29,24,54,.08);}
.flow-card b{display:block;font-size:14px;color:#5b3df5;margin-bottom:6px;}
.flow-card h3{margin:0 0 8px;font-size:16.5px;color:#1d1836;}
.flow-card p{margin:0;font-size:14.5px;color:#5b5578;}

/* 行业方案 */
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.solution-card{background:rgba(255,255,255,.92);border:1px solid rgba(29,24,54,.08);border-radius:20px;padding:24px;transition:transform .3s ease,box-shadow .3s ease;}
.solution-card:hover{transform:translateY(-4px);box-shadow:0 26px 44px -32px rgba(45,35,95,.9);}
.solution-card h3{margin:0 0 10px;font-size:16.5px;color:#1d1836;display:flex;align-items:center;gap:9px;}
.solution-dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,#ff5d8f,#7b61ff);flex:0 0 auto;}
.solution-card p{margin:0;font-size:14.5px;color:#5b5578;}

/* 服务网络 */
.network-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.network-card{background:linear-gradient(160deg,#ffffff,#fdf7fb);border:1px solid rgba(29,24,54,.08);border-radius:20px;padding:26px;}
.network-card h3{margin:0 0 10px;font-size:16.5px;color:#1d1836;}
.network-card p{margin:0;font-size:14.5px;color:#5b5578;}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.case-card{background:#fff;border:1px solid rgba(29,24,54,.08);border-radius:20px;overflow:hidden;transition:transform .3s ease,box-shadow .3s ease;}
.case-card:hover{transform:translateY(-5px);box-shadow:0 28px 48px -32px rgba(45,35,95,.9);}
.case-media{aspect-ratio:16/10;background:linear-gradient(135deg,#f6f0ff,#fdf1f5);display:flex;align-items:center;justify-content:center;padding:12px;}
.case-media img{width:100%;height:100%;object-fit:contain;}
.case-body{padding:18px 20px 22px;}
.case-body h3{margin:0 0 8px;font-size:16.5px;color:#1d1836;}
.case-body p{margin:0;font-size:14.5px;color:#5b5578;}
.case-band{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:20px;}
.case-band figure{margin:0;border-radius:16px;overflow:hidden;border:1px solid rgba(29,24,54,.08);background:#fff;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;padding:10px;transition:transform .3s ease;}
.case-band figure:hover{transform:translateY(-4px);}
.case-band img{width:100%;height:100%;object-fit:contain;}

/* 对比评测 */
.score-board{
  display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:center;
  background:linear-gradient(120deg,rgba(255,93,143,.12),rgba(123,97,255,.14));
  border:1px solid rgba(123,97,255,.22);border-radius:24px;padding:26px 28px;margin-bottom:26px;
}
.score-main{text-align:center;}
.score-stars{display:block;color:#ffab2e;font-size:19px;letter-spacing:3px;}
.score-num{font-size:46px;line-height:1.1;font-weight:800;color:#1d1836;}
.score-of{font-size:16px;color:#5b5578;font-weight:600;}
.score-main p{margin:6px 0 0;font-size:13.5px;color:#5b5578;}
.score-notes p{margin:0;font-size:15px;color:#3a3560;}
.score-notes span{display:inline-block;margin-top:12px;font-size:13px;font-weight:700;color:#5b3df5;background:#fff;padding:6px 14px;border-radius:999px;border:1px solid rgba(123,97,255,.3);}
.table-wrap{overflow-x:auto;border-radius:18px;border:1px solid rgba(29,24,54,.08);background:#fff;}
.compare-table{width:100%;border-collapse:collapse;min-width:660px;font-size:14.5px;}
.compare-table th,.compare-table td{padding:14px 18px;text-align:left;border-bottom:1px solid rgba(29,24,54,.07);vertical-align:top;}
.compare-table thead th{background:rgba(123,97,255,.09);color:#1d1836;font-weight:700;font-size:14px;}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody td:nth-child(2){color:#0f9e86;font-weight:600;}
.compare-table tbody td:nth-child(3){color:#6c678a;}

/* Token 比价 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.price-card{background:#fff;border:1px solid rgba(29,24,54,.09);border-radius:20px;padding:26px;display:flex;flex-direction:column;gap:12px;transition:transform .3s ease,box-shadow .3s ease;}
.price-card:hover{transform:translateY(-4px);box-shadow:0 26px 46px -32px rgba(45,35,95,.9);}
.price-card b{font-size:13px;letter-spacing:.08em;color:#e0447a;}
.price-card h3{margin:0;font-size:19px;color:#1d1836;}
.price-card ul{margin:0;padding-left:18px;color:#5b5578;font-size:14.5px;}
.price-card ul li{margin-bottom:6px;}
.price-card .btn{margin-top:auto;}
.price-note{margin-top:18px;font-size:14px;color:#5b5578;}

/* 评论 */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.review{background:#fff;border:1px solid rgba(29,24,54,.08);border-radius:18px;padding:22px;display:flex;flex-direction:column;gap:12px;transition:transform .3s ease,box-shadow .3s ease;}
.review:hover{transform:translateY(-4px);box-shadow:0 24px 40px -32px rgba(45,35,95,.9);}
.review-stars{color:#ffab2e;font-size:14px;letter-spacing:2px;}
.review p{margin:0;font-size:14.5px;color:#3a3560;}
.review-meta{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:6px;}
.review-avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#ff5d8f,#7b61ff);flex:0 0 auto;}
.review-meta span{font-size:13.5px;color:#5b5578;}

/* 表单 */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.form-info h2{margin:16px 0 12px;font-size:clamp(22px,2.8vw,30px);color:#1d1836;line-height:1.32;}
.form-info p{margin:0 0 14px;color:#5b5578;font-size:15px;}
.form-info ul{margin:0;padding-left:18px;color:#5b5578;font-size:14.5px;}
.form-info ul li{margin-bottom:8px;}
.form-card{background:#fff;border:1px solid rgba(29,24,54,.09);border-radius:22px;padding:26px;box-shadow:0 26px 50px -40px rgba(45,35,95,.9);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;color:#3a3560;margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border-radius:12px;border:1px solid rgba(29,24,54,.16);
  background:#fdfbfa;font-size:14.5px;font-family:inherit;color:#1d1836;
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.field textarea{resize:vertical;min-height:110px;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:#7b61ff;background:#fff;box-shadow:0 0 0 4px rgba(123,97,255,.14);}
.form-card .btn{width:100%;margin-top:4px;}
.form-tip{margin:12px 0 0;font-size:12.5px;color:#6c678a;}

/* 帮助 / 百科 / 资讯 */
.mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.mini-card{background:#fff;border:1px solid rgba(29,24,54,.08);border-radius:16px;padding:20px;transition:transform .3s ease,border-color .3s ease;}
.mini-card:hover{transform:translateY(-3px);border-color:rgba(123,97,255,.4);}
.mini-card h3{margin:0 0 6px;font-size:15.5px;color:#1d1836;}
.mini-card p{margin:0;font-size:13.8px;color:#5b5578;}
.wiki-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.wiki-item{background:rgba(255,255,255,.9);border:1px solid rgba(29,24,54,.08);border-radius:16px;padding:20px;}
.wiki-item dt{font-size:15px;font-weight:700;color:#1d1836;margin-bottom:6px;}
.wiki-item dd{margin:0;font-size:14.2px;color:#5b5578;}
.news-list{display:grid;gap:12px;}
.news-item{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid rgba(29,24,54,.08);border-radius:14px;padding:14px 20px;text-decoration:none;color:#1d1836;font-size:15px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.news-item:hover{transform:translateX(4px);border-color:rgba(123,97,255,.42);box-shadow:0 18px 32px -30px rgba(45,35,95,.9);}
.news-item span{font-size:12.5px;color:#e0447a;font-weight:700;flex:0 0 auto;}

/* FAQ */
.faq-list{display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid rgba(29,24,54,.08);border-radius:16px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;}
.faq-item.open{border-color:rgba(123,97,255,.38);box-shadow:0 20px 36px -30px rgba(123,97,255,.9);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;background:none;border:none;font-family:inherit;
  font-size:15.5px;font-weight:600;color:#1d1836;text-align:left;cursor:pointer;
}
.faq-q::after{content:"+";font-size:20px;line-height:1;color:#7b61ff;transition:transform .3s ease;}
.faq-item.open .faq-q::after{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{margin:0;padding:0 20px 18px;font-size:14.5px;color:#5b5578;}

/* 加盟代理 */
.join-card{
  display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;
  background:linear-gradient(130deg,rgba(255,93,143,.1),rgba(34,195,166,.12));
  border:1px solid rgba(123,97,255,.22);border-radius:24px;padding:32px;
}
.join-card h2{margin:14px 0 12px;font-size:clamp(22px,2.8vw,30px);color:#1d1836;line-height:1.32;}
.join-card p{margin:0 0 18px;color:#4a4566;font-size:15px;}
.join-actions{display:flex;flex-wrap:wrap;gap:12px;}
.join-list{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.join-list li{background:#fff;border-radius:14px;padding:12px 16px;font-size:14.5px;color:#3a3560;border:1px solid rgba(29,24,54,.08);}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start;}
.contact-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.contact-item{background:#fff;border:1px solid rgba(29,24,54,.08);border-radius:16px;padding:16px 18px;}
.contact-item b{display:block;font-size:12.5px;color:#6c678a;font-weight:600;margin-bottom:4px;}
.contact-item a{color:#1d1836;text-decoration:none;font-size:14.5px;font-weight:600;word-break:break-all;}
.contact-item a:hover{color:#5b3df5;}
.qr-card{background:#fff;border:1px solid rgba(29,24,54,.08);border-radius:20px;padding:22px;text-align:center;}
.qr-box{width:150px;margin:0 auto 12px;border-radius:12px;overflow:hidden;border:1px solid rgba(29,24,54,.08);background:#fdfbfa;padding:6px;}
.qr-box img{width:100%;height:auto;object-fit:contain;}
.qr-card p{margin:0;font-size:14px;color:#5b5578;}

/* 页脚 */
.site-footer{background:#fffaf8;border-top:1px solid rgba(29,24,54,.09);padding:38px 0 26px;margin-top:10px;}
.footer-top{display:grid;grid-template-columns:1fr 1.4fr;gap:28px;}
.footer-name{margin:0;font-size:18px;font-weight:800;color:#1d1836;}
.footer-desc{margin:6px 0 14px;font-size:14px;color:#5b5578;}
.footer-contact{margin:0 0 6px;font-size:14px;color:#4a4566;}
.footer-contact a{color:#1d1836;text-decoration:none;font-weight:600;}
.footer-contact a:hover{color:#5b3df5;}
.footer-label{display:block;font-size:13.5px;font-weight:700;color:#1d1836;margin-bottom:12px;}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 14px;}
.friend-links a{font-size:13.5px;color:#4a4566;text-decoration:none;padding:4px 10px;border-radius:9px;background:rgba(123,97,255,.07);transition:color .25s ease,background-color .25s ease;}
.friend-links a:hover{color:#5b3df5;background:rgba(123,97,255,.16);}
.footer-bottom{margin-top:26px;padding-top:16px;border-top:1px solid rgba(29,24,54,.09);font-size:13px;color:#6c678a;text-align:center;}

/* 浮动 */
.fab-stack{position:fixed;right:18px;bottom:22px;display:flex;flex-direction:column;gap:10px;z-index:120;}
.fab{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;text-decoration:none;
  background:#fff;border:1px solid rgba(29,24,54,.12);color:#1d1836;font-size:12.5px;font-weight:700;
  box-shadow:0 16px 30px -20px rgba(29,24,54,.9);cursor:pointer;font-family:inherit;
  transition:transform .25s ease,box-shadow .25s ease,opacity .25s ease;
}
.fab:hover{transform:translateY(-3px);box-shadow:0 22px 34px -20px rgba(29,24,54,.95);}
.fab-primary{background:linear-gradient(135deg,#ff5d8f,#7b61ff);color:#fff;border-color:transparent;}
.fab-top{opacity:0;pointer-events:none;transform:translateY(10px);}
.fab-top.show{opacity:1;pointer-events:auto;transform:none;}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .hero-bg span{animation:none;}
  *{transition-duration:.01ms !important;}
}

/* 响应式 */
@media (max-width:1024px){
  .about-grid,.service-grid,.solution-grid,.network-grid,.case-grid,.price-grid,.review-grid,.flow-cards{grid-template-columns:repeat(2,1fr);}
  .mini-grid{grid-template-columns:repeat(2,1fr);}
  .wiki-grid{grid-template-columns:repeat(2,1fr);}
  .case-band{grid-template-columns:repeat(2,1fr);}
  .footer-top{grid-template-columns:1fr;}
  .join-card{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:900px){
  .nav{
    position:absolute;top:calc(100% + 8px);left:16px;right:16px;margin-left:0;
    display:none;background:#fff;border-radius:18px;padding:8px;
    box-shadow:0 26px 46px -28px rgba(45,35,95,.7);border:1px solid rgba(29,24,54,.08);z-index:60;
  }
  .nav.open{display:block;}
  .nav-links{flex-direction:column;align-items:stretch;}
  .nav-links a{padding:12px 16px;font-size:15px;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .hero{padding:56px 0 60px;}
  .section{padding:52px 0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);padding:20px 14px;}
  .score-board{grid-template-columns:1fr;text-align:center;padding:22px;}
  .form-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .about-grid,.service-grid,.solution-grid,.network-grid,.case-grid,.price-grid,.review-grid,.flow-cards,.mini-grid,.wiki-grid,.case-band,.contact-list{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-points{justify-content:flex-start;}
  .footer-bottom{text-align:left;}
  .fab-stack{bottom:16px;right:14px;}
  .fab{width:48px;height:48px;font-size:12px;}
}