/* ============================================================
   首页模板 · 天青商务（azure）
   白底 + 深青蓝主色，经典 SaaS 商务风，自包含无外部依赖
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --ink: #0e2a47;
  --text: #3d4c63;
  --muted: #64748b;
  --border: #dde5ef;
  --primary: #1f6feb;
  --primary-strong: #1758c4;
  --primary-tint: #e9f1fd;
  --radius: 10px;
  --header-h: 62px;
  --shadow-sm: 0 1px 2px rgba(14, 42, 71, 0.06);
  --shadow-md: 0 12px 32px rgba(14, 42, 71, 0.1);
  --container: 1080px;
}

* { padding: 0; margin: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; }

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

.icon {
  width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0;
}

/* ── 按钮 ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 20px; font-size: 14px; font-weight: 500;
  border: 1px solid transparent; border-radius: 8px; cursor: pointer; transition: all .2s ease;
}
.btn-primary { color: #fff; background-color: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background-color: var(--primary-strong); border-color: var(--primary-strong); box-shadow: 0 6px 16px rgba(31, 111, 235, .25); }
.btn-outline { color: var(--primary); background-color: var(--bg); border-color: var(--border); }
.btn-outline:hover { color: var(--primary-strong); border-color: var(--primary); background-color: var(--primary-tint); }
.btn-inverse { color: var(--primary); background-color: #fff; border-color: #fff; }
.btn-inverse:hover { color: var(--primary-strong); background-color: var(--primary-tint); }
.btn-ghost { color: #fff; background-color: transparent; border-color: rgba(255, 255, 255, .55); }
.btn-ghost:hover { background-color: rgba(255, 255, 255, .12); border-color: #fff; }
.btn-lg { padding: 12px 28px; font-size: 15px; }
.btn-sm { padding: 5px 14px; font-size: 13px; }

/* ── 顶部导航 ─────────────────────────────────────────── */
.site-header { position: sticky; top: 0; z-index: 100; background-color: var(--bg); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark { width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; border-radius: 8px; background-color: var(--primary); }
.brand-mark::after { content: '¥'; font-size: 16px; font-weight: 700; color: #fff; }
.brand-logo { height: 48px; max-width: 240px; object-fit: contain; }
.site-nav { display: flex; gap: 6px; }
.site-nav a { padding: 7px 14px; font-size: 14px; color: var(--text); border-radius: 6px; transition: all .2s ease; }
.site-nav a:hover { color: var(--ink); background-color: var(--bg-soft); }
.site-nav a[aria-current='page'] { color: var(--primary); font-weight: 600; background-color: var(--primary-tint); }
.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-toggle { display: none; flex-direction: column; gap: 4px; width: 36px; height: 36px; padding: 9px 8px; background: transparent; border: 1px solid var(--border); border-radius: 8px; cursor: pointer; }
.nav-toggle-bar { display: block; width: 100%; height: 2px; background-color: var(--ink); border-radius: 1px; }

/* ── Hero ─────────────────────────────────────────────── */
.hero { padding: 72px 0 64px; background-color: var(--bg-soft); border-bottom: 1px solid var(--border); }
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero-tag { display: inline-block; margin-bottom: 16px; padding: 3px 12px; font-size: 12px; font-weight: 600; color: var(--primary); background-color: var(--primary-tint); border-radius: 999px; }
.hero-title { margin: 0 0 12px; font-size: clamp(30px, 4.2vw, 42px); font-weight: 700; line-height: 1.3; letter-spacing: -.5px; color: var(--ink); }
.hero-slogan { margin: 0 0 12px; font-size: 16px; font-weight: 600; color: var(--primary); }
.hero-desc { margin: 0 0 26px; max-width: 520px; font-size: 14px; color: var(--muted); }
.hero-actions { display: flex; gap: 12px; margin-bottom: 14px; }
.hero-note { margin: 0; font-size: 12px; color: var(--muted); }

/* ── Hero 收款概览面板 ────────────────────────────────── */
.panel { padding: 22px; background-color: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-md); }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.panel-title { font-size: 14px; font-weight: 600; color: var(--ink); }
.panel-badge { padding: 2px 10px; font-size: 11px; color: var(--primary); background-color: var(--primary-tint); border-radius: 999px; }
.panel-amount { margin-bottom: 14px; font-size: 30px; font-weight: 700; color: var(--ink); font-variant-numeric: tabular-nums; }
.panel-row { display: flex; align-items: center; gap: 12px; padding: 9px 0; }
.panel-channel { width: 64px; flex-shrink: 0; font-size: 12px; color: var(--text); }
.panel-bar { flex: 1; height: 8px; background-color: var(--bg-soft); border-radius: 4px; overflow: hidden; }
.panel-bar i { display: block; height: 100%; background-color: var(--primary); border-radius: 4px; }
.bar-2 i { background-color: #4c86f0; }
.bar-3 i { background-color: #7aa7f4; }
.bar-4 i { background-color: #a8c7f8; }
.panel-value { width: 88px; flex-shrink: 0; text-align: right; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.panel-foot { display: flex; justify-content: space-between; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); }

/* ── 数据信任条 ───────────────────────────────────────── */
.stats { background-color: var(--bg-soft); border-bottom: 1px solid var(--border); }
.stats-inner { display: grid; grid-template-columns: repeat(4, 1fr); padding: 36px 0; }
.stat-item { padding: 6px 12px; text-align: center; }
.stat-value { display: block; font-size: 28px; font-weight: 700; color: var(--ink); }
.stat-label { font-size: 12px; color: var(--muted); }

@media (min-width: 1025px) {
  .stat-item + .stat-item { border-left: 1px solid var(--border); }
}

/* ── 通用区块 ─────────────────────────────────────────── */
.section { padding: 64px 0; }
.section-alt { background-color: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { margin-bottom: 36px; text-align: center; }
.section-eyebrow { display: block; margin-bottom: 8px; font-size: 12px; font-weight: 600; letter-spacing: 3px; color: var(--primary); }
.section-title { margin: 0 0 8px; font-size: 26px; font-weight: 700; color: var(--ink); }
.section-desc { margin: 0; font-size: 14px; color: var(--muted); }

/* ── 核心能力 ─────────────────────────────────────────── */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card { padding: 24px; background-color: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: all .2s ease; }
.feature-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.feature-icon { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin-bottom: 14px; color: var(--primary); background-color: var(--primary-tint); border-radius: 10px; }
.feature-card h3 { margin: 0 0 6px; font-size: 16px; color: var(--ink); }
.feature-card p { margin: 0; font-size: 13px; color: var(--muted); }

/* ── 接入流程 ─────────────────────────────────────────── */
.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-item { position: relative; padding-top: 24px; border-top: 2px solid var(--border); }
.step-num { position: absolute; top: -16px; left: 0; display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; font-size: 14px; font-weight: 700; color: #fff; background-color: var(--primary); border-radius: 8px; box-shadow: 0 0 0 4px var(--bg-soft); }
.step-item h3 { margin: 0 0 6px; font-size: 16px; color: var(--ink); }
.step-item p { margin: 0; font-size: 13px; color: var(--muted); }

/* ── 费率方案 ─────────────────────────────────────────── */
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan { display: flex; flex-direction: column; padding: 26px; background-color: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.plan-featured { border-color: var(--primary); box-shadow: var(--shadow-md); }
.plan-badge { display: inline-block; align-self: flex-start; margin-bottom: 10px; padding: 2px 10px; font-size: 11px; font-weight: 600; color: #fff; background-color: var(--primary); border-radius: 999px; }
.plan-name { margin: 0 0 4px; font-size: 16px; font-weight: 600; color: var(--ink); }
.plan-desc { margin: 0 0 14px; font-size: 12px; color: var(--muted); }
.plan-price { margin-bottom: 16px; font-size: 32px; font-weight: 700; color: var(--ink); }
.plan-price small { font-size: 13px; font-weight: 400; color: var(--muted); }
.plan-list { display: grid; gap: 10px; margin-bottom: 22px; }
.plan-list li { position: relative; padding-left: 24px; font-size: 13px; color: var(--text); }
.plan-list li::before { content: ''; position: absolute; left: 2px; top: 7px; width: 12px; height: 6px; border-left: 2px solid var(--primary); border-bottom: 2px solid var(--primary); transform: rotate(-45deg); }
.plan .btn { margin-top: auto; }

/* ── 常见问题 ─────────────────────────────────────────── */
.faq-list { display: grid; gap: 12px; max-width: 760px; margin: 0 auto; }
.faq-item { background-color: var(--bg); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; font-size: 14px; font-weight: 600; color: var(--ink); cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 18px; font-weight: 600; line-height: 1; color: var(--primary); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { margin: 0; padding: 0 18px 16px; font-size: 13px; color: var(--muted); }

/* ── CTA 横幅 ─────────────────────────────────────────── */
.cta { padding: 72px 0 0; }
.cta-inner { padding: 46px 24px; text-align: center; color: #fff; background-color: var(--primary); border-radius: var(--radius); }
.cta-inner h2 { margin: 0 0 8px; font-size: 24px; font-weight: 700; color: #fff; }
.cta-inner p { margin: 0 0 22px; font-size: 14px; color: rgba(255, 255, 255, .85); }
.cta-actions { display: flex; justify-content: center; gap: 12px; }

/* ── 页脚 ─────────────────────────────────────────────── */
.site-footer { margin-top: 72px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr; gap: 28px; padding: 44px 0 28px; }
.footer-brand h3 { margin: 0 0 8px; font-size: 16px; color: var(--ink); }
.footer-brand p { margin: 0; max-width: 260px; font-size: 13px; color: var(--muted); }
.footer-col h4 { margin: 0 0 12px; font-size: 14px; color: var(--ink); }
.footer-col ul { display: grid; gap: 8px; }
.footer-col a { font-size: 13px; color: var(--muted); transition: color .2s ease; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { padding: 16px 0 20px; border-top: 1px solid var(--border); text-align: center; font-size: 12px; color: var(--muted); }
.footer-beian { margin: 0 0 4px; }
.footer-copy { margin: 0; }

/* ── 响应式 ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { width: 100%; max-width: 540px; margin: 0 auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .step-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 24px; }
  .plan-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 20px 0; }
}

@media (max-width: 768px) {
  .site-nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; flex-direction: column; gap: 2px; padding: 10px 20px 14px; background-color: var(--bg); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 10px 12px; }
  .nav-toggle { display: flex; }
}

@media (max-width: 600px) {
  .brand-logo { height: 36px; max-width: 180px; }
  .hero { padding: 48px 0 40px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .feature-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-actions .btn { display: none; }
  .stat-value { font-size: 24px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 320px; }
}

/* ── 无障碍：键盘焦点可见 ─────────────────────────────── */
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }