:root{
  --primary:#0da29a;
  --primary-dark:#0b8983;
  --primary-soft:rgba(13,162,154,.08);
  --primary-border:rgba(13,162,154,.22);
  --mint:#f0f9f8;
  --ink:#17323a;
  --ink-soft:#48626b;
  --muted:#8497a0;
  --bg:#fbfdfd;
  --card:#ffffff;
  --border:#e4efee;
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 10px 30px rgba(23,50,58,.06);
  --shadow-lg:0 24px 60px rgba(23,50,58,.12);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:3px solid rgba(13,162,154,.45);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
section{position:relative;scroll-margin-top:88px}

/* ---------- 通用元素 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:999px;border:none;cursor:pointer;
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
}
.btn svg{width:18px;height:18px}
.btn-primary{
  color:#fff;background:var(--primary);
  box-shadow:0 10px 24px rgba(13,162,154,.32);
}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 14px 32px rgba(13,162,154,.42)}
.btn-ghost{
  color:var(--primary);background:var(--primary-soft);
}
.btn-ghost:hover{background:rgba(13,162,154,.14);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--primary);box-shadow:0 10px 24px rgba(11,60,58,.28)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(11,60,58,.36)}
.btn-sm{padding:10px 22px;font-size:14.5px}
.btn-lg{padding:16px 36px;font-size:16.5px}
.btn-xl{padding:19px 56px;font-size:19px;box-shadow:0 16px 40px rgba(13,162,154,.38)}
.btn-xl:hover{box-shadow:0 20px 48px rgba(13,162,154,.5)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:999px;
  font-size:13.5px;font-weight:600;letter-spacing:1px;color:var(--primary);
  background:var(--primary-soft);border:1px solid var(--primary-border);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.sec-head{max-width:760px;margin:0 auto 56px;text-align:center}
.sec-head h2{
  font-size:clamp(28px,4vw,40px);line-height:1.3;font-weight:800;
  margin:18px 0 14px;letter-spacing:-.5px;
}
.sec-head h2 .hl{color:var(--primary)}
.sec-head p{color:var(--ink-soft);font-size:17px}

/* 入场动画（无JS时内容直接可见） */
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease;transition-delay:var(--d,0s)}
.js .reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(23,50,58,.05);
  transition:box-shadow .3s ease;
}
.site-header.scrolled{box-shadow:0 6px 24px rgba(23,50,58,.08)}
.nav-wrap{display:flex;align-items:center;gap:32px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:21px;font-weight:800;letter-spacing:-.3px}
.brand-mark{width:32px;height:32px;flex-shrink:0}
.main-nav{display:flex;gap:30px;margin-left:auto}
.main-nav a{font-size:15.5px;font-weight:500;color:var(--ink-soft);transition:color .2s ease}
.main-nav a:hover{color:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-login{font-size:15px;font-weight:600;color:var(--ink-soft);transition:color .2s ease}
.nav-login:hover{color:var(--primary)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;margin-left:auto}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px;transition:.3s}
.mobile-menu{display:none}
@media (max-width:900px){
  .main-nav,.nav-actions{display:none}
  .nav-toggle{display:block}
  .mobile-menu{
    display:none;position:absolute;top:72px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);padding:12px 24px 20px;z-index:99;
  }
  .mobile-menu.open{display:block}
  .mobile-menu a{display:block;padding:13px 8px;border-radius:10px;font-weight:600;color:var(--ink-soft)}
  .mobile-menu a:hover{background:var(--primary-soft);color:var(--primary)}
  .mobile-menu .mobile-cta{
    margin-top:10px;text-align:center;background:var(--primary);color:#fff;
    box-shadow:0 8px 20px rgba(13,162,154,.3);
  }
  .mobile-menu .mobile-cta:hover{background:var(--primary-dark);color:#fff}
}

/* ---------- Hero（简洁 · 突出立即使用） ---------- */
.logo-image {
    width: 32px;
}
.hero{
  min-height:calc(100vh - 72px);
  display:flex;align-items:center;
  padding:48px 0;overflow:hidden;
  background:
    radial-gradient(900px 480px at 85% -10%,rgba(13,162,154,.07),transparent 60%),
    radial-gradient(700px 420px at -10% 20%,rgba(13,162,154,.05),transparent 55%),
    linear-gradient(180deg,#ffffff 0%,var(--bg) 100%);
}
.hero-copy{max-width:860px;margin:0 auto;text-align:center;position:relative}
.hero h1{
  font-size:clamp(34px,5vw,56px);line-height:1.24;font-weight:900;
  letter-spacing:-1px;margin-bottom:22px;color:var(--ink);
}
.hero-sub{font-size:18px;color:var(--muted);max-width:640px;margin:0 auto 40px}
.hero-actions{display:flex;justify-content:center;gap:14px;margin-bottom:36px}
.hero-trust{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;color:var(--muted);font-size:14.5px}
.hero-trust li{display:flex;align-items:center;gap:7px}
.hero-trust svg{width:16px;height:16px;color:var(--muted);flex-shrink:0}

/* ---------- 语言支持带 ---------- */
.langs{padding:36px 0 64px}
.langs p{text-align:center;color:var(--muted);font-size:14px;letter-spacing:2px;margin-bottom:18px}
.lang-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.lang-row span{
  padding:8px 20px;border-radius:999px;background:#fff;border:1px solid var(--border);
  font-size:14.5px;color:var(--ink-soft);font-weight:500;transition:.25s;
}
.lang-row span:hover{border-color:var(--primary-border);color:var(--primary);transform:translateY(-2px)}
.lang-row .more{background:var(--primary-soft);border-color:var(--primary-border);color:var(--primary)}

/* ---------- 核心功能 ---------- */
.features{padding:100px 0;background:#fff}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{
  background:var(--bg);
  border:1px solid var(--border);border-radius:var(--radius);
  padding:34px 28px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  position:relative;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--ac,#0da29a),transparent 70%);
  opacity:0;transition:opacity .3s ease;
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(13,162,154,.3)}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:52px;height:52px;border-radius:14px;margin-bottom:20px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--ac,#0da29a);
}
.feature-icon svg{width:26px;height:26px}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:10px;letter-spacing:-.2px}
.feature-card p{color:var(--ink-soft);font-size:15px}

/* ---------- 使用流程 ---------- */
.steps-sec{padding:100px 0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{position:relative;padding:0 8px}
.step-num{
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;color:var(--primary);
  background:#fff;border:2px solid var(--primary-border);
  margin-bottom:20px;position:relative;z-index:1;
}
.step:not(:last-child)::after{
  content:"";position:absolute;top:28px;left:calc(56px + 12px);right:-12px;
  height:2px;background:linear-gradient(90deg,var(--primary-border),rgba(13,162,154,.06));
}
.step h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step p{color:var(--ink-soft);font-size:14.5px}

/* ---------- 数据统计 ---------- */
.stats{padding:64px 0;background:#fff}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:var(--mint);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:44px 24px;
}
.stat{text-align:center;position:relative}
.stat:not(:last-child)::after{
  content:"";position:absolute;right:-10px;top:15%;height:70%;width:1px;background:var(--border);
}
.stat-num{
  font-size:clamp(30px,3.6vw,44px);font-weight:900;letter-spacing:-1px;line-height:1.15;
  color:var(--primary);
}
.stat-label{color:var(--ink-soft);font-size:14.5px;margin-top:6px}

/* ---------- 应用场景 ---------- */
.scenarios{padding:100px 0}
.scen-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.scen-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 32px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.scen-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(13,162,154,.3)}
.scen-icon{
  width:52px;height:52px;border-radius:14px;margin-bottom:20px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);
}
.scen-icon svg{width:26px;height:26px}
.scen-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.scen-card p{color:var(--ink-soft);font-size:15px;margin-bottom:18px}
.scen-tags{display:flex;flex-wrap:wrap;gap:8px}
.scen-tags span{
  padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--mint);color:var(--primary);border:1px solid rgba(13,162,154,.14);
}

/* ---------- 效果对比 ---------- */
.compare{padding:100px 0;background:#fff}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);background:#fff}
.cmp-table{width:100%;border-collapse:collapse;min-width:720px;font-size:15px}
.cmp-table th,.cmp-table td{padding:18px 24px;text-align:left;border-bottom:1px solid var(--border)}
.cmp-table thead th{
  font-size:15px;font-weight:700;color:var(--ink);
  background:var(--mint);border-bottom:2px solid rgba(13,162,154,.2);
}
.cmp-table tbody th{font-weight:600;color:var(--ink-soft);white-space:nowrap}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-table tbody tr:hover{background:rgba(13,162,154,.02)}
.cmp-table .col-hl{background:rgba(13,162,154,.06);color:var(--primary);font-weight:700}
.cmp-table thead .col-hl{background:rgba(13,162,154,.14)}

/* ---------- 方案定价 ---------- */
.pricing{padding:100px 0}
.billing-switch{
  display:flex;justify-content:center;margin-bottom:48px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:5px;width:fit-content;margin-left:auto;margin-right:auto;
  box-shadow:var(--shadow);
}
.billing-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 28px;border-radius:999px;border:none;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--ink-soft);background:transparent;
  transition:.25s;
}
.billing-btn.active{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(13,162,154,.32)}
.save-tag{
  font-size:12px;font-weight:700;padding:2px 8px;border-radius:999px;
  background:rgba(255,255,255,.22);color:#fff;
}
.billing-btn:not(.active) .save-tag{background:var(--primary-soft);color:var(--primary)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:38px 32px;display:flex;flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease;
  position:relative;
}
.plan:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.plan h3{font-size:20px;font-weight:800;margin-bottom:8px}
.plan-desc{color:var(--muted);font-size:14px;margin-bottom:22px}
.plan-price{display:flex;align-items:baseline;gap:2px;margin-bottom:6px}
.plan-price .cur{font-size:20px;font-weight:700;color:var(--ink)}
.plan-price .num{font-size:46px;font-weight:900;letter-spacing:-1.5px;line-height:1.1;color:var(--ink)}
.plan-price .num.text{font-size:38px}
.plan-price .per{font-size:15px;color:var(--muted)}
.billing-note{font-size:13px;color:var(--muted);margin-bottom:24px;min-height:20px}
.plan-list{display:flex;flex-direction:column;gap:12px;margin-bottom:30px;flex:1}
.plan-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--ink-soft)}
.plan-list li::before{
  content:"";width:18px;height:18px;border-radius:50%;flex-shrink:0;margin-top:3px;
  background:var(--primary-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230da29a' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/10px no-repeat;
}
.plan .btn{width:100%}
.plan.featured{
  border:2px solid var(--primary);
  box-shadow:0 24px 60px rgba(13,162,154,.16);
}
.plan-badge{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--primary);color:#fff;font-size:12.5px;font-weight:700;
  padding:5px 18px;border-radius:999px;letter-spacing:1px;
  box-shadow:0 6px 16px rgba(13,162,154,.32);
}

/* ---------- 用户评价 ---------- */
.testimonials{padding:100px 0;background:#fff}
.tst-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tst-card{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:34px 30px;display:flex;flex-direction:column;gap:24px;
  transition:transform .3s ease,box-shadow .3s ease;
}
.tst-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.tst-card blockquote{
  font-size:15.5px;color:var(--ink-soft);line-height:1.85;flex:1;
  position:relative;padding-left:20px;
}
.tst-card blockquote::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:3px;background:linear-gradient(180deg,var(--primary),rgba(13,162,154,.15));
}
.tst-card figcaption{display:flex;align-items:center;gap:14px}
.tst-avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);
  font-size:17px;font-weight:700;
}
.tst-card figcaption b{display:block;font-size:15px;color:var(--ink)}
.tst-card figcaption i{display:block;font-style:normal;font-size:13px;color:var(--muted)}

/* ---------- 常见问题 ---------- */
.faq{padding:100px 0}
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.open{border-color:rgba(13,162,154,.4);box-shadow:var(--shadow)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:16px;font-weight:700;color:var(--ink);line-height:1.5;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{width:20px;height:20px;flex-shrink:0;color:var(--muted);transition:transform .3s ease}
.faq-item.open .faq-icon{transform:rotate(180deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 26px 22px}
.faq-a-inner p{color:var(--ink-soft);font-size:15px}

/* ---------- 底部 CTA ---------- */
.cta-sec{padding:100px 0;background:#fff}
.cta-panel{
  background:linear-gradient(135deg,#0da29a 0%,#0b8983 100%);
  border-radius:28px;padding:72px 48px;text-align:center;
  box-shadow:0 24px 60px rgba(13,162,154,.25);
}
.cta-panel h2{
  color:#fff;font-size:clamp(28px,4vw,40px);font-weight:800;
  letter-spacing:-.5px;margin-bottom:14px;
}
.cta-panel p{color:rgba(255,255,255,.85);font-size:17px;max-width:560px;margin:0 auto 36px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--border);padding:64px 0 0}
.footer-top{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand p{color:var(--muted);font-size:14.5px;margin-top:16px;max-width:280px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--ink)}
.footer-col a{
  display:block;font-size:14.5px;color:var(--ink-soft);
  padding:5px 0;transition:color .2s ease;
}
.footer-col a:hover{color:var(--primary)}
.footer-seo{border-top:1px solid var(--border);padding:24px 0}
.footer-seo p{color:var(--muted);font-size:13px;line-height:1.8}
.footer-bottom{border-top:1px solid var(--border);padding:20px 0}
.footer-bottom p{color:var(--muted);font-size:13.5px;text-align:center}

/* ---------- 轻提示 Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,16px);
  background:var(--ink);color:#fff;font-size:14.5px;font-weight:500;
  padding:13px 28px;border-radius:999px;box-shadow:var(--shadow-lg);
  opacity:0;pointer-events:none;z-index:200;
  transition:opacity .3s ease,transform .3s ease;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .step:not(:last-child)::after{display:none}
  .scen-grid{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr;max-width:480px;margin:0 auto}
  .tst-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .hero{padding:40px 0;min-height:auto}
  .hero-actions .btn-xl{padding:16px 42px;font-size:17px}
  .features,.steps-sec,.scenarios,.compare,.pricing,.testimonials,.faq,.cta-sec{padding:70px 0}
  .stats{padding:44px 0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 16px;padding:34px 18px}
  .stat:nth-child(2)::after{display:none}
}
@media (max-width:640px){
  .features-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .cta-panel{padding:56px 24px}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .billing-switch{width:100%;justify-content:center}
  .billing-btn{padding:10px 18px;font-size:14px}
  .toast{width:calc(100% - 48px);text-align:center}
}