*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:92px;}
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:#0f172a;
  background-color:#f6f8ff;
  background-image:
    radial-gradient(circle at 10% -5%,rgba(6,182,212,.16),transparent 45%),
    radial-gradient(circle at 92% 4%,rgba(217,70,239,.13),transparent 46%),
    radial-gradient(circle at 50% 44%,rgba(99,102,241,.10),transparent 55%),
    radial-gradient(circle at 6% 94%,rgba(6,182,212,.10),transparent 42%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;}
a{color:#4338ca;}
::selection{background:rgba(99,102,241,.2);}

h1,h2,h3,h4{color:#0f172a;line-height:1.32;margin:0;font-weight:800;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid rgba(226,232,240,.9);
}
.header-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;min-height:70px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
img.ai-page-logo{max-height:36px !important;width:auto !important;display:block;}
.brand-name{font-size:17px;font-weight:800;color:#111827;white-space:nowrap;letter-spacing:.02em;}
.nav{display:flex;align-items:center;}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap;}
.nav-links li{display:block;}
.nav-links a{
  display:block;padding:9px 10px;font-size:13.5px;font-weight:600;
  color:#41506b;text-decoration:none;border-radius:10px;white-space:nowrap;
  transition:color .22s ease,background .22s ease;
}
.nav-links a:hover{color:#4338ca;background:rgba(99,102,241,.09);}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid #dbe3f3;
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-toggle:hover{border-color:#a5b4fc;box-shadow:0 6px 16px rgba(99,102,241,.16);}
.nav-toggle span{display:block;width:18px;height:2px;background:#334155;border-radius:2px;position:relative;transition:background .2s ease;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#334155;border-radius:2px;transition:transform .25s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;text-decoration:none;cursor:pointer;
  font-family:inherit;line-height:1.2;
  transition:transform .22s ease,box-shadow .26s ease,background .26s ease,border-color .26s ease,color .26s ease;
}
.btn-primary{
  background:linear-gradient(100deg,#06b6d4 0%,#6366f1 52%,#d946ef 100%);
  color:#fff;box-shadow:0 10px 24px rgba(99,102,241,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(217,70,239,.34);}
.btn-primary:active{transform:translateY(0) scale(.985);}
.btn-ghost{
  background:#fff;color:#3730a3;border-color:#c7d2fe;
  box-shadow:0 6px 18px rgba(99,102,241,.12);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:#818cf8;box-shadow:0 14px 30px rgba(99,102,241,.2);}
.btn-ghost:active{transform:translateY(0) scale(.985);}
.btn-sm{padding:9px 18px;font-size:13.5px;}

/* ============ 首屏 ============ */
.hero{position:relative;padding:74px 0 60px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-160px;right:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(217,70,239,.18),transparent 68%);
  filter:blur(6px);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-200px;left:-160px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(6,182,212,.18),transparent 68%);
  filter:blur(6px);pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-block;padding:6px 15px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.06em;color:#4f46e5;
  background:rgba(99,102,241,.10);border:1px solid rgba(99,102,241,.18);
}
.hero h1{
  font-size:clamp(28px,4.2vw,46px);line-height:1.22;margin:18px 0 16px;
  letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;color:#4338ca;}
.hero-lead{font-size:16px;line-height:1.85;color:#42506b;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px;}
.hero-tags li{
  font-size:12.5px;font-weight:600;color:#3f4b66;background:#fff;
  border:1px solid #e3e8f3;border-radius:999px;padding:5px 13px;
  box-shadow:0 4px 12px rgba(15,23,42,.04);
  transition:transform .22s ease,box-shadow .22s ease,color .22s ease;
}
.hero-tags li:hover{transform:translateY(-2px);color:#4338ca;box-shadow:0 10px 20px rgba(99,102,241,.16);}

.hero-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.metric-card{
  background:#fff;border:1px solid #e6eaf5;border-radius:18px;padding:20px 18px;
  box-shadow:0 10px 28px rgba(15,23,42,.07);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.metric-card:hover{transform:translateY(-4px);border-color:#c7d2fe;box-shadow:0 20px 42px rgba(99,102,241,.2);}
.metric-kicker{display:block;font-size:12px;font-weight:700;letter-spacing:.1em;color:#7c8aa5;}
.metric-value{
  display:block;font-size:26px;font-weight:800;color:#4338ca;margin:6px 0 4px;line-height:1.2;
}
.metric-card p{font-size:13px;color:#5b6b82;line-height:1.6;}

/* ============ 通用区块 ============ */
.section{padding:70px 0;}
.section-head{max-width:780px;margin:0 auto 40px;text-align:center;}
.section-head h2{font-size:clamp(23px,3vw,34px);margin:14px 0 14px;}
.section-desc{font-size:15.5px;color:#4b5b73;line-height:1.85;}
.section-head.left{margin-left:0;text-align:left;}

.grid{display:grid;gap:18px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}

.card{
  position:relative;background:#fff;border:1px solid #e6eaf5;border-radius:18px;
  padding:24px 22px;box-shadow:0 8px 24px rgba(15,23,42,.05);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:22px;width:42px;height:3px;border-radius:0 0 4px 4px;
  background:linear-gradient(90deg,#06b6d4,#6366f1 52%,#d946ef);
}
.card:hover{transform:translateY(-4px);border-color:#c7d2fe;box-shadow:0 20px 42px rgba(99,102,241,.17);}
.card h3{font-size:16.5px;margin-bottom:9px;}
.card p{font-size:14px;color:#4f5f78;line-height:1.78;}

.link-card{display:block;text-decoration:none;color:inherit;}
.link-more{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:700;color:#4338ca;}

/* ============ 关于我们 ============ */
.about-media{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:22px;}
.media-box{
  display:flex;align-items:center;justify-content:center;
  aspect-ratio:16/9;background:linear-gradient(140deg,#eef3ff,#f7f0ff);
  border:1px solid #e6eaf5;border-radius:16px;overflow:hidden;
}
.media-box img{width:100%;height:100%;object-fit:contain;display:block;}

/* ============ 标签云 ============ */
.tag-block{background:#fff;border:1px solid #e6eaf5;border-radius:20px;padding:26px 24px;box-shadow:0 8px 24px rgba(15,23,42,.05);}
.tag-block + .tag-block{margin-top:18px;}
.tag-block h3{font-size:16px;margin-bottom:6px;}
.tag-block .tag-note{font-size:13.5px;color:#72809a;margin-bottom:16px;}
.tags{display:flex;flex-wrap:wrap;gap:9px;}
.tags li{
  font-size:13px;font-weight:600;color:#3f4b66;background:#f7f9ff;
  border:1px solid #e5eaf6;border-radius:999px;padding:6px 14px;
  transition:transform .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.tags li:hover{transform:translateY(-2px);background:#eef2ff;color:#4338ca;border-color:#c7d2fe;}
.tags.neon li{background:linear-gradient(120deg,rgba(6,182,212,.1),rgba(217,70,239,.1));border-color:rgba(99,102,241,.2);color:#3730a3;}

/* ============ 流程步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.step{
  position:relative;background:#fff;border:1px solid #e6eaf5;border-radius:18px;padding:26px 22px 22px;
  box-shadow:0 8px 24px rgba(15,23,42,.05);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.step:hover{transform:translateY(-4px);border-color:#c7d2fe;box-shadow:0 20px 42px rgba(99,102,241,.17);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:13px;background:linear-gradient(120deg,#06b6d4,#6366f1 55%,#d946ef);
  color:#fff;font-size:14px;font-weight:800;margin-bottom:14px;letter-spacing:.02em;
}
.step h3{font-size:16px;margin-bottom:8px;}
.step p{font-size:13.5px;color:#4f5f78;line-height:1.78;}

/* ============ 案例 ============ */
.case-media{
  display:flex;align-items:center;justify-content:center;
  aspect-ratio:4/3;background:linear-gradient(140deg,#eef3ff,#f8f1ff);
  border:1px solid #e6eaf5;border-radius:14px;overflow:hidden;margin-bottom:16px;
}
.case-media img{width:100%;height:100%;object-fit:contain;display:block;}
.case-card h3{font-size:16px;margin-bottom:8px;}
.case-card p{font-size:13.5px;color:#4f5f78;line-height:1.78;}

/* ============ 对比评测 ============ */
.score-card{
  background:linear-gradient(125deg,rgba(6,182,212,.1),rgba(99,102,241,.12) 48%,rgba(217,70,239,.12));
  border:1px solid rgba(99,102,241,.24);border-radius:22px;
  padding:32px 26px;text-align:center;box-shadow:0 14px 36px rgba(99,102,241,.16);
}
.score-stars{font-size:24px;letter-spacing:.18em;color:#f59e0b;}
.score-value{font-size:52px;font-weight:800;color:#3730a3;line-height:1.1;margin:8px 0 4px;}
.score-value span{font-size:20px;font-weight:700;color:#6d7b96;}
.score-label{font-size:15px;font-weight:800;color:#1f2a44;}
.score-note{font-size:13px;color:#5b6b82;margin-top:10px;line-height:1.75;}

.table-wrap{
  margin-top:22px;overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:#fff;border:1px solid #e6eaf5;border-radius:18px;
  box-shadow:0 10px 28px rgba(15,23,42,.06);
}
.table-hint{font-size:12.5px;color:#7c8aa5;margin-top:10px;text-align:center;}
table{width:100%;border-collapse:collapse;min-width:680px;}
thead th{
  padding:15px 18px;text-align:left;font-size:13.5px;font-weight:800;color:#1e293b;
  background:linear-gradient(90deg,rgba(6,182,212,.11),rgba(217,70,239,.11));
  border-bottom:1px solid #e6eaf5;white-space:nowrap;
}
thead th:nth-child(2){color:#4338ca;}
tbody td{
  padding:14px 18px;font-size:13.5px;color:#40506a;border-bottom:1px solid #eef2f8;line-height:1.7;
}
tbody td:first-child{font-weight:700;color:#1f2a44;white-space:nowrap;}
tbody td:nth-child(2){color:#111827;font-weight:600;background:rgba(99,102,241,.035);}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover td{background:#f8faff;}

/* ============ 用户评论 ============ */
.review-card{
  background:#fff;border:1px solid #e6eaf5;border-radius:18px;padding:24px 22px;
  box-shadow:0 8px 24px rgba(15,23,42,.05);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.review-card:hover{transform:translateY(-4px);border-color:#c7d2fe;box-shadow:0 20px 42px rgba(99,102,241,.17);}
.review-mark{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(120deg,rgba(6,182,212,.16),rgba(217,70,239,.16));
  color:#4338ca;font-size:19px;font-weight:800;margin-bottom:14px;
}
.review-card blockquote{margin:0;font-size:14px;color:#3f4d66;line-height:1.85;}
.review-user{display:flex;align-items:center;gap:11px;margin-top:18px;padding-top:16px;border-top:1px solid #eef2f8;}
.review-avatar{
  display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;
  background:linear-gradient(130deg,#e0f2fe,#ede9fe);color:#4338ca;font-size:14px;font-weight:800;flex-shrink:0;
}
.review-name{font-size:14px;font-weight:800;color:#1f2a44;line-height:1.4;}
.review-role{font-size:12.5px;color:#7c8aa5;line-height:1.4;}

/* ============ Token比价 ============ */
.price-card{
  background:#fff;border:1px solid #e6eaf5;border-radius:18px;padding:26px 22px;
  box-shadow:0 8px 24px rgba(15,23,42,.05);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.price-card:hover{transform:translateY(-4px);border-color:#c7d2fe;box-shadow:0 20px 42px rgba(99,102,241,.17);}
.price-card h3{font-size:16px;margin-bottom:10px;}
.price-card p{font-size:13.5px;color:#4f5f78;line-height:1.8;}
.price-tag{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.04em;color:#4338ca;
  background:rgba(99,102,241,.1);border-radius:999px;padding:4px 12px;margin-bottom:12px;
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid #e6eaf5;border-radius:16px;overflow:hidden;
  box-shadow:0 6px 20px rgba(15,23,42,.045);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item:hover{border-color:#c7d2fe;box-shadow:0 12px 28px rgba(99,102,241,.13);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;font-size:15px;font-weight:700;color:#1f2a44;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"＋";flex-shrink:0;width:26px;height:26px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  color:#4338ca;background:rgba(99,102,241,.1);transition:background .25s ease,color .25s ease;
}
.faq-item[open] summary::after{content:"－";background:rgba(99,102,241,.18);}
.faq-answer{padding:0 20px 18px;font-size:14px;color:#4f5f78;line-height:1.85;}

/* ============ 文章 ============ */
.article-card{
  display:block;text-decoration:none;color:inherit;background:#fff;border:1px solid #e6eaf5;
  border-radius:16px;padding:22px 20px;box-shadow:0 8px 22px rgba(15,23,42,.05);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.article-card:hover{transform:translateY(-4px);border-color:#c7d2fe;box-shadow:0 20px 40px rgba(99,102,241,.16);}
.article-card h3{font-size:15px;margin-bottom:8px;}
.article-card p{font-size:13px;color:#5b6b82;line-height:1.75;}
.article-more{display:inline-block;margin-top:12px;font-size:13px;font-weight:700;color:#4338ca;}
.poster-slot{
  margin-top:18px;padding:18px;border:1px dashed #c7d2fe;border-radius:14px;
  background:rgba(255,255,255,.7);font-size:13px;color:#5b6b82;word-break:break-all;
}

/* ============ 表单 ============ */
.contact-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:26px;align-items:start;}
.contact-info{background:#fff;border:1px solid #e6eaf5;border-radius:20px;padding:28px 24px;box-shadow:0 10px 28px rgba(15,23,42,.06);}
.contact-info h3{font-size:17px;margin-bottom:8px;}
.contact-info > p{font-size:13.5px;color:#5b6b82;line-height:1.8;margin-bottom:18px;}
.contact-list{display:grid;gap:12px;}
.contact-list li{
  display:flex;align-items:flex-start;gap:12px;font-size:13.5px;color:#3f4d66;line-height:1.7;
}
.contact-key{
  flex-shrink:0;min-width:78px;font-weight:800;color:#4338ca;font-size:13px;
}
.kefu-qr{
  margin-top:20px;padding-top:18px;border-top:1px solid #eef2f8;
  display:flex;align-items:center;gap:16px;
}
.kefu-qr-figure{width:104px;flex-shrink:0;border-radius:12px;overflow:hidden;border:1px solid #e6eaf5;background:#f8faff;}
.kefu-qr-figure img{display:block;width:100%;height:auto;}
.kefu-qr p{font-size:13px;color:#5b6b82;line-height:1.75;}

.contact-form{background:#fff;border:1px solid #e6eaf5;border-radius:20px;padding:28px 24px;box-shadow:0 10px 28px rgba(15,23,42,.06);}
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px;}
.field label{font-size:13.5px;font-weight:700;color:#28344d;}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14px;color:#0f172a;
  background:#f8faff;border:1px solid #dfe6f3;border-radius:12px;padding:11px 14px;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
  outline:none;
}
.field textarea{resize:vertical;min-height:112px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:#818cf8;background:#fff;box-shadow:0 0 0 4px rgba(99,102,241,.14);
}
.form-note{font-size:12.5px;color:#7c8aa5;margin-top:12px;line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;background:#eef2fa;border-top:1px solid #dde5f2;
  color:#334155;padding:46px 0 22px;
}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.4fr;gap:28px;}
.footer-brand{font-size:18px;font-weight:800;color:#111827;margin-bottom:10px;}
.footer-desc{font-size:13px;color:#4a5a72;line-height:1.85;}
.footer-title{font-size:13.5px;font-weight:800;color:#111827;margin-bottom:12px;letter-spacing:.02em;}
.footer-links{display:grid;gap:8px;}
.footer-links a{font-size:13px;color:#3f4d66;text-decoration:none;transition:color .2s ease;}
.footer-links a:hover{color:#4338ca;}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 14px;}
.friend-links a{font-size:12.5px;color:#3f4d66;text-decoration:none;transition:color .2s ease;}
.friend-links a:hover{color:#4338ca;}
.footer-contact{display:grid;gap:8px;font-size:13px;color:#3f4d66;}
.footer-bottom{
  margin-top:32px;padding-top:18px;border-top:1px solid #dbe3f1;
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:#5b6b82;
}

/* ============ 浮动组件 ============ */
.float-widgets{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;align-items:flex-end;gap:12px;}
.float-btn{
  display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;
  border:1px solid rgba(99,102,241,.25);cursor:pointer;font-family:inherit;
  font-size:12.5px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#06b6d4,#6366f1 55%,#d946ef);
  box-shadow:0 12px 26px rgba(99,102,241,.32);
  transition:transform .22s ease,box-shadow .22s ease,opacity .22s ease;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(217,70,239,.34);}
.float-btn:active{transform:translateY(0) scale(.97);}
#backTop{opacity:0;pointer-events:none;background:#fff;color:#4338ca;border-color:#c7d2fe;box-shadow:0 10px 24px rgba(15,23,42,.14);font-size:16px;}
#backTop.show{opacity:1;pointer-events:auto;}
.kefu-panel{
  position:absolute;right:0;bottom:70px;width:260px;background:#fff;border:1px solid #e6eaf5;
  border-radius:18px;padding:18px;box-shadow:0 22px 50px rgba(15,23,42,.18);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.kefu-panel.open{opacity:1;visibility:visible;transform:translateY(0);}
.kefu-panel img{display:block;width:100%;max-width:160px;height:auto;margin:0 auto 10px;border-radius:12px;border:1px solid #eef2f8;}
.kefu-title{font-size:13.5px;font-weight:800;color:#1f2a44;text-align:center;margin-bottom:12px;}
.kefu-list{display:grid;gap:7px;font-size:12.5px;color:#4f5f78;line-height:1.6;}
.kefu-list strong{color:#4338ca;font-weight:800;}

/* ============ 动效 ============ */
@keyframes fadeUp{from{opacity:0;transform:translateY(20px);}to{opacity:1;transform:translateY(0);}}
.hero-copy > *{animation:fadeUp .8s cubic-bezier(.2,.7,.3,1) both;}
.hero-copy > *:nth-child(1){animation-delay:.04s;}
.hero-copy > *:nth-child(2){animation-delay:.12s;}
.hero-copy > *:nth-child(3){animation-delay:.2s;}
.hero-copy > *:nth-child(4){animation-delay:.28s;}
.hero-copy > *:nth-child(5){animation-delay:.36s;}
.hero-panel{animation:fadeUp .9s .28s cubic-bezier(.2,.7,.3,1) both;}

html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1);}
html.js .reveal.in{opacity:1;transform:translateY(0);}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-delay:0s !important;transition-duration:.001ms !important;}
  html.js .reveal{opacity:1;transform:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .nav{
    position:absolute;top:100%;left:20px;right:20px;display:none;
    background:#fff;border:1px solid #e6eaf5;border-radius:16px;
    box-shadow:0 22px 48px rgba(15,23,42,.16);padding:10px;margin-top:6px;z-index:95;
  }
  .nav.open{display:block;}
  .nav-links{flex-direction:column;align-items:stretch;}
  .nav-links a{padding:12px 14px;font-size:14px;border-radius:10px;}
  .nav-toggle{display:flex;}
  .header-cta{padding:9px 16px;font-size:13.5px;}
}
@media (max-width:980px){
  .hero{padding:52px 0 44px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .section{padding:54px 0;}
  .section-head{margin-bottom:30px;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .contact-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
}
@media (max-width:640px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .header-inner{min-height:64px;gap:8px;}
  .brand-name{font-size:15px;}
  .nav{left:16px;right:16px;}
  .hero{padding:40px 0 36px;}
  .hero-actions{gap:10px;}
  .btn{padding:11px 20px;font-size:14px;}
  .hero-lead{font-size:15px;}
  .grid-2,.grid-3,.grid-4,.steps,.about-media,.form-row{grid-template-columns:1fr;}
  .metric-card{padding:16px 14px;}
  .metric-value{font-size:22px;}
  .score-value{font-size:42px;}
  .section{padding:46px 0;}
  .card,.step,.review-card,.price-card{padding:20px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:22px;}
  .float-widgets{right:12px;bottom:16px;}
  .float-btn{width:48px;height:48px;border-radius:14px;}
  .kefu-panel{width:min(260px,calc(100vw - 40px));right:0;}
  .contact-info,.contact-form{padding:22px 18px;}
  .table-hint{text-align:left;}
}