:root {
    --green: #10b981;
    --green-dark: #0d9668;
    --green-light: #d1fae5;
    --ink: #1f2937;
    --ink-soft: #4b5563;
    --bg: #ffffff;
    --bg-soft: #f0fdf6;
    --border: #e5e7eb;
    --radius: 16px;
    --shadow: 0 8px 30px rgba(16, 185, 129, .12);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.7; }
  a { text-decoration: none; color: inherit; }
  img { max-width: 100%; display: block; }
  .container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

  /* ===== 导航 ===== */
  header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
  }
  .nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
  .brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; }
  .brand img { width: 36px; height: 36px; border-radius: 8px; }
  .brand .sub { font-size: 11px; color: var(--ink-soft); font-weight: 400; display: block; line-height: 1.2; }
  .nav-links { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--ink-soft); }
  .nav-links a:hover { color: var(--green); }
  .nav-cta { background: var(--green); color: #fff !important; padding: 9px 20px; border-radius: 999px; font-size: 14px; font-weight: 600; }
  .nav-cta:hover { background: var(--green-dark); color: #fff !important; }
  .nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--ink); }

  /* ===== Hero ===== */
  .hero { position: relative; background: linear-gradient(160deg, #f0fdf6 0%, #e8fbf1 45%, #d9f7e9 100%); overflow: hidden; padding: 90px 0 100px; }
  .hero::after {
    content: ""; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px;
    background: radial-gradient(circle, rgba(16,185,129,.18), transparent 65%); border-radius: 50%;
  }
  .hero-inner { position: relative; z-index: 1; display: flex; align-items: center; gap: 60px; }
  .hero-text { flex: 1.15; }
  .hero-badge { display: inline-flex; align-items: center; gap: 6px; background: #fff; border: 1px solid var(--border); padding: 6px 14px; border-radius: 999px; font-size: 13px; color: var(--green-dark); margin-bottom: 20px; box-shadow: var(--shadow); }
  .hero h1 { font-size: 46px; line-height: 1.25; font-weight: 800; letter-spacing: -1px; }
  .hero h1 em { font-style: normal; color: var(--green); }
  .hero p.lead { margin: 18px 0 30px; font-size: 18px; color: var(--ink-soft); max-width: 520px; }
  .hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
  .btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 28px; border-radius: 999px; font-size: 16px; font-weight: 600; transition: all .2s; cursor: pointer; border: none; }
  .btn-primary { background: var(--green); color: #fff; box-shadow: var(--shadow); }
  .btn-primary:hover { background: var(--green-dark); transform: translateY(-2px); }
  .btn-ghost { background: #fff; color: var(--ink); border: 1px solid var(--border); }
  .btn-ghost:hover { border-color: var(--green); color: var(--green); transform: translateY(-2px); }
  .hero-stats { display: flex; gap: 40px; margin-top: 44px; }
  .stat b { font-size: 28px; color: var(--green-dark); display: block; font-weight: 800; }
  .stat span { font-size: 13px; color: var(--ink-soft); }
  .hero-visual { flex: 1; display: flex; justify-content: center; }
  .hero-visual .phone {
    width: 280px; border-radius: 36px; background: #fff; box-shadow: 0 24px 60px rgba(16,185,129,.22);
    border: 8px solid #111827; overflow: hidden; padding: 14px;
  }
  .phone-screen { background: linear-gradient(180deg, #f0fdf6, #fff); border-radius: 24px; padding: 22px 18px; }
  .phone-screen .app { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
  .phone-screen .app img { width: 40px; height: 40px; border-radius: 10px; }
  .phone-screen .app b { font-size: 15px; }
  .phone-screen .card { background: #fff; border-radius: 12px; padding: 12px; margin-bottom: 10px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
  .phone-screen .card .tag { font-size: 11px; color: var(--green); font-weight: 600; }
  .phone-screen .card .t { font-size: 13px; font-weight: 600; margin: 2px 0; }
  .phone-screen .card .d { font-size: 11px; color: var(--ink-soft); }
  .phone-screen .bar { height: 6px; border-radius: 3px; background: var(--green-light); margin-top: 8px; }
  .phone-screen .bar i { display: block; height: 6px; border-radius: 3px; background: var(--green); width: 70%; }

  /* ===== 区块通用 ===== */
  section { padding: 84px 0; }
  .sec-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
  .sec-head .kicker { color: var(--green); font-weight: 700; font-size: 14px; letter-spacing: 2px; text-transform: uppercase; }
  .sec-head h2 { font-size: 34px; font-weight: 800; margin: 10px 0 12px; letter-spacing: -0.5px; }
  .sec-head p { color: var(--ink-soft); font-size: 16px; }

  /* ===== 痛点 ===== */
  .pain { background: var(--bg-soft); }
  .pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .pain-card { background: #fff; border-radius: var(--radius); padding: 28px 24px; box-shadow: 0 4px 16px rgba(0,0,0,.04); transition: transform .2s; }
  .pain-card:hover { transform: translateY(-4px); }
  .pain-card .icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 16px; background: var(--green-light); }
  .pain-card h3 { font-size: 17px; margin-bottom: 8px; }
  .pain-card p { font-size: 14px; color: var(--ink-soft); }

  /* ===== 解决方案 ===== */
  .sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .sol-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 26px; transition: all .2s; }
  .sol-card:hover { border-color: var(--green); box-shadow: var(--shadow); }
  .sol-card .no { font-size: 13px; color: var(--green); font-weight: 700; }
  .sol-card h3 { font-size: 19px; margin: 8px 0 10px; }
  .sol-card p { font-size: 14px; color: var(--ink-soft); }
  .sol-card ul { list-style: none; margin-top: 12px; }
  .sol-card li { font-size: 13.5px; color: var(--ink-soft); padding: 4px 0 4px 20px; position: relative; }
  .sol-card li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }

  /* ===== 产品矩阵 ===== */
  .product { background: var(--bg-soft); }
  .qr-wrap { display: flex; align-items: center; justify-content: center; gap: 28px; max-width: 720px; margin: 0 auto 24px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 32px; box-shadow: 0 6px 22px rgba(0,0,0,.05); }
  .qr-box { text-align: center; }
  .qr-box #qrOwner { display: inline-block; padding: 8px; background: #fff; border: 1px solid var(--border); border-radius: 12px; }
  .qr-box .qr-tip { margin-top: 10px; font-size: 13px; color: var(--ink-soft); }
  .qr-note { text-align: left; }
  .qr-note p { font-size: 15px; color: var(--ink); margin-bottom: 6px; }
  .qr-note p:last-child { font-size: 13px; color: var(--ink-soft); }
  .qr-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
  .qr-tab { padding: 6px 16px; border-radius: 999px; font-size: 13px; border: 1px solid var(--border); background: #fff; color: var(--ink-soft); cursor: pointer; transition: all .2s; }
  .qr-tab:hover { border-color: var(--green); color: var(--green-dark); }
  .qr-tab.active { background: var(--green); color: #fff; border-color: var(--green); }
  .prod-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; max-width: 720px; margin: 0 auto; }
  .prod-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 30px 30px; text-align: center; box-shadow: 0 6px 22px rgba(0,0,0,.05); transition: transform .2s, box-shadow .2s, border-color .2s; display: flex; flex-direction: column; }
  .prod-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(0,0,0,.10); border-color: var(--green); }
  .prod-card .picon { width: 74px; height: 74px; margin: 0 auto 18px; border-radius: 20px; display: flex; align-items: center; justify-content: center; font-size: 34px; }
  .prod-card .qr-mini { display: flex; justify-content: center; margin: 0 0 20px; }
  .prod-card .qr-mini img, .prod-card .qr-mini canvas { border-radius: 10px; box-shadow: 0 2px 8px rgba(0,0,0,.06); }
  .prod-card h3 { font-size: 18px; margin-bottom: 6px; }
  .prod-card p { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 18px; flex: 1; }
  .prod-card .pbtn { display: inline-block; padding: 10px 22px; border-radius: 999px; font-size: 14px; font-weight: 600; background: var(--green-light); color: var(--green-dark); transition: all .2s; }
  .prod-card .pbtn:hover { background: var(--green); color: #fff; }
  .c-owner { background: #ecfdf5; } .c-owner2 { background: var(--green-light); }
  .c-craftsman { background: #eff6ff; } .c-craftsman2 { background: #dbeafe; }
  .c-merchant { background: #fff7ed; } .c-merchant2 { background: #ffedd5; }
  .c-admin { background: #faf5ff; } .c-admin2 { background: #f3e8ff; }

  /* ===== 流程 ===== */
  .flow { position: relative; }
  .flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .flow-step { text-align: center; position: relative; padding: 0 12px; }
  .flow-step .dot { width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 50%; background: var(--green-light); color: var(--green-dark); font-size: 22px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
  .flow-step h3 { font-size: 17px; margin-bottom: 6px; }
  .flow-step p { font-size: 13.5px; color: var(--ink-soft); }

  /* ===== 关于/联系 ===== */
  .about { background: linear-gradient(160deg, #111827, #1f2937); color: #f9fafb; }
  .about .sec-head h2 { color: #fff; }
  .about .sec-head p { color: #9ca3af; }
  .about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .about-card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 30px 26px; }
  .about-card h3 { font-size: 18px; margin-bottom: 12px; color: #fff; }
  .about-card p { font-size: 14px; color: #9ca3af; }
  .about-card .contact-line { display: flex; align-items: center; gap: 10px; margin-top: 10px; font-size: 15px; color: #e5e7eb; }
  .about-card a.phone { color: var(--green); font-weight: 700; font-size: 16px; }
  .about-card a.phone:hover { text-decoration: underline; }

  /* ===== 页脚 ===== */
  footer { background: #0f172a; color: #94a3b8; padding: 36px 0; font-size: 13px; }
  .footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
  .footer-inner .links a { margin-right: 20px; }
  .footer-inner .links a:hover { color: var(--green); }
  .footer-inner .beian a { color: #94a3b8; }
  .footer-inner .beian a:hover { color: var(--green); }
  .footer-inner .beian .sep { margin: 0 8px; color: #475569; }

  /* ===== 响应式 ===== */
  @media (max-width: 960px) {
    .hero { padding: 60px 0 70px; }
    .hero-inner { flex-direction: column; gap: 40px; text-align: center; }
    .hero p.lead { margin-left: auto; margin-right: auto; }
    .hero-cta { justify-content: center; }
    .hero-stats { justify-content: center; gap: 28px; }
    .pain-grid, .prod-grid { grid-template-columns: repeat(2, 1fr); }
    .sol-grid, .about-grid { grid-template-columns: 1fr; }
    .flow-steps { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
    .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px 24px; gap: 16px; border-bottom: 1px solid var(--border); box-shadow: 0 12px 24px rgba(0,0,0,.08); }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .sec-head h2 { font-size: 28px; }
  }
  @media (max-width: 560px) {
    .hero h1 { font-size: 34px; }
    .pain-grid, .prod-grid { grid-template-columns: 1fr; }
    .flow-steps { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; text-align: center; }
    .qr-wrap { flex-direction: column; gap: 16px; padding: 20px; }
    .qr-note { text-align: center; }
  }