/* ===== SaaS 公共样式 ===== */
:root {
  --orange: #F08C2E;
  --orange-dark: #D4761E;
  --orange-light: #FFB454;
  --orange-soft: #FFF1DE;
  --orange-grad: linear-gradient(135deg, #FFB454 0%, #F08C2E 50%, #D4761E 100%);
  --orange-grad-h: linear-gradient(135deg, #FFC066 0%, #FA9838 50%, #E0801E 100%);
  --surface: #fff;
  --surface-2: #FFFAF2;
  --text: #363636;
  --text-sec: #8a8a8a;
  --text-mut: #b0b0b0;
  --border: #F0D4A8;
  --border-2: #F5E0C0;
  --bg: #FFF6EC;
  /* 主题感知变量 —— 由 JS applyTheme() 动态覆盖 */
  --shadow-rgb: 240,140,46;
  --bg-glow-1: rgba(240,140,46,0.10);
  --bg-glow-2: rgba(212,118,30,0.07);
  --bg-glow-3: rgba(255,180,84,0.05);
  --shadow: 0 2px 8px rgba(var(--shadow-rgb), 0.08), 0 1px 2px rgba(var(--shadow-rgb), 0.04);
  --shadow-lg: 0 8px 28px rgba(var(--shadow-rgb), 0.12), 0 2px 8px rgba(var(--shadow-rgb), 0.06);
  --shadow-orange: 0 4px 16px rgba(var(--shadow-rgb), 0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 7px;
  --purple: #8B6FA5;
  --purple-grad: linear-gradient(135deg, #8B6FA5, #735B8A);
  --green: #4A9D7C;
  --blue: #4A6FA5;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 90% 60% at 15% 0%, var(--bg-glow-1), transparent),
    radial-gradient(ellipse 70% 50% at 85% 5%, var(--bg-glow-2), transparent),
    radial-gradient(ellipse 60% 40% at 50% 100%, var(--bg-glow-3), transparent);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s ease;
}

/* ===== SaaS 页面容器 ===== */
.saas-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 顶部 Logo 栏 ===== */
.saas-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-2);
  position: sticky;
  top: 0;
  z-index: 100;
}
.saas-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  cursor: pointer;
}
.saas-logo .logo-icon {
  width: 36px; height: 36px;
  background: var(--orange-grad);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 4px 12px rgba(var(--shadow-rgb),0.3);
}
.saas-header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.saas-header-actions a {
  color: var(--text-sec);
  text-decoration: none;
  font-size: 14px;
  cursor: pointer;
  transition: color 0.2s;
}
.saas-header-actions a:hover { color: var(--orange); }

/* ===== 登录/注册 ===== */
.auth-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.auth-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  width: 100%;
  max-width: 420px;
}
.auth-card h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 6px;
}
.auth-card .auth-sub {
  font-size: 14px;
  color: var(--text-sec);
  margin-bottom: 28px;
}
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-form .input-group { display: flex; flex-direction: column; gap: 6px; }
.auth-form label { font-size: 13px; font-weight: 600; color: var(--text); }
.auth-form input {
  padding: 12px 14px;
  border: 1.5px solid var(--border-2);
  border-radius: var(--radius-sm);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
  background: var(--surface-2);
}
.auth-form input:focus { border-color: var(--orange); background: #fff; }
.auth-form input::placeholder { color: var(--text-mut); }
.btn-primary {
  padding: 13px;
  background: var(--orange-grad);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  touch-action: manipulation;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-orange); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.auth-switch {
  text-align: center;
  font-size: 13px;
  color: var(--text-sec);
  margin-top: 8px;
}
.auth-switch a {
  color: var(--orange);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}
.auth-error {
  background: #fff0f0;
  color: #e74c3c;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  display: none;
}
.auth-error.show { display: block; }

/* ===== 定价页 ===== */
.pricing-container {
  flex: 1;
  display: flex;
  gap: 20px;
  padding: 50px 40px;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}
.pricing-content {
  flex: 1;
  min-width: 0;
}
.pricing-hero {
  text-align: center;
  margin-bottom: 28px;
}
.pricing-hero h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
}
.pricing-hero p {
  font-size: 16px;
  color: var(--text-sec);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.plan-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  border: 2px solid transparent;
}
.plan-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.plan-card.popular { border-color: var(--orange); }
.plan-card .popular-badge {
  position: absolute;
  top: 0; right: 0;
  background: var(--orange-grad);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-bottom-left-radius: 10px;
}
.plan-card .plan-header {
  padding: 28px 24px 20px;
  text-align: center;
}
.plan-card .plan-name {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
}
.plan-card .plan-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}
.plan-card .plan-price .currency { font-size: 16px; font-weight: 600; }
.plan-card .plan-price .amount { font-size: 40px; font-weight: 800; line-height: 1; }
.plan-card .plan-price .period { font-size: 14px; color: var(--text-sec); }
.plan-card .plan-desc {
  font-size: 13px;
  color: var(--text-sec);
  margin-top: 8px;
}
.plan-card .plan-features {
  padding: 16px 24px 24px;
  flex: 1;
}
.plan-card .plan-features li {
  list-style: none;
  padding: 7px 0;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.plan-card .plan-features li .feat-icon {
  width: 18px; height: 18px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
}
.plan-card .plan-features li.yes .feat-icon { background: #e8f5e9; color: #2e7d32; }
.plan-card .plan-features li.no { color: var(--text-mut); }
.plan-card .plan-features li.no .feat-icon { background: var(--surface-2); color: var(--text-mut); }
.plan-card .plan-cta {
  padding: 0 24px 24px;
}
.plan-card .plan-cta button {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid var(--orange);
  transition: all 0.2s;
  touch-action: manipulation;
}
.plan-card .plan-cta button.btn-outline {
  background: #fff;
  color: var(--orange);
}
.plan-card .plan-cta button.btn-outline:hover { background: var(--orange-soft); }
.plan-card .plan-cta button.btn-fill {
  background: var(--orange-grad);
  color: #fff;
  border-color: transparent;
}
.plan-card .plan-cta button.btn-fill:hover { box-shadow: var(--shadow-orange); }
.plan-card .plan-cta button.btn-current {
  background: var(--surface-2);
  color: var(--text-sec);
  border-color: var(--border-2);
  cursor: default;
}
.plan-card.ultimate .plan-cta button.btn-outline { border-color: var(--purple); color: var(--purple); }
.plan-card.ultimate .plan-cta button.btn-fill { background: var(--purple-grad); border-color: transparent; }

/* 功能对比表 */
.feature-table-wrap {
  background: var(--surface);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  overflow: hidden;
  border: 1px solid var(--border-2);
}
.feature-table {
  width: 100%;
  border-collapse: collapse;
}
.feature-table th, .feature-table td {
  padding: 16px 20px;
  text-align: center;
  font-size: 14px;
  border-bottom: 1px solid var(--border-2);
  transition: background 0.2s;
}
.feature-table th {
  background: linear-gradient(135deg, #FFF8F0 0%, #FFEEDB 100%);
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  padding: 18px 20px;
}
.feature-table th.col-pro {
  background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 100%);
  color: #E65100;
}
.feature-table th.col-ultimate {
  background: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
  color: #6A1B9A;
}
.feature-table td:first-child, .feature-table th:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--text);
}
.feature-table td.col-pro {
  background: rgba(255, 152, 0, 0.03);
}
.feature-table td.col-ultimate {
  background: rgba(156, 39, 176, 0.03);
}
.feature-table tr:hover td {
  background: rgba(255, 152, 0, 0.05);
}
.feature-table tr:hover td.col-pro {
  background: rgba(255, 152, 0, 0.08);
}
.feature-table tr:hover td.col-ultimate {
  background: rgba(156, 39, 176, 0.08);
}
.feature-table .check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, #66BB6A 0%, #43A047 100%);
  color: #fff;
  font-size: 14px;
  border-radius: 50%;
  font-weight: 700;
}
.feature-table .cross {
  color: #ccc;
  font-size: 18px;
}

/* ===== 月付/年付切换 ===== */
.billing-toggle {
  display: inline-flex; gap: 4px; padding: 4px;
  background: var(--surface); border-radius: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-2);
  flex-wrap: wrap;
}
.billing-toggle .bt-btn {
  padding: 8px 16px; border: none; border-radius: 20px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  background: transparent; color: var(--text-sec);
  transition: all 0.2s; white-space: nowrap;
}
.billing-toggle .bt-btn.active {
  background: var(--orange-grad); color: #fff;
  box-shadow: 0 2px 8px rgba(var(--shadow-rgb),0.3);
}
.billing-toggle .bt-save {
  display: inline-block; padding: 1px 6px;
  background: #e74c3c; color: #fff;
  border-radius: 8px; font-size: 10px; font-weight: 700;
  margin-left: 4px;
}

/* 连续包月规则说明 */
.billing-rules {
  max-width: 680px; margin: 12px auto 0;
  padding: 10px 16px; border-radius: 10px;
  background: var(--surface); border: 1px dashed var(--border);
  font-size: 12px; color: var(--text-sec); line-height: 1.7;
  display: none;
}
.billing-rules.show { display: block; }
.billing-rules b { color: var(--orange-dark); font-weight: 700; }

/* ===== 试用引导（单行胶囊） ===== */
.trial-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 680px;
  margin: 16px auto 0;
  padding: 10px 16px;
  background: linear-gradient(135deg, var(--orange-soft), var(--border-2));
  border-radius: 100px;
  border: 1px solid var(--border);
  white-space: nowrap;
  overflow: hidden;
}
.trial-pill .tp-icon { font-size: 18px; flex-shrink: 0; }
.trial-pill .tp-text {
  flex: 1;
  font-size: 13px;
  color: var(--text-sec);
  overflow: hidden;
  text-overflow: ellipsis;
}
.trial-pill .tp-text b { color: var(--orange-dark); font-weight: 800; }
.trial-pill .tp-btn {
  flex-shrink: 0;
  padding: 6px 16px;
  background: var(--orange-grad);
  color: #fff;
  border: none;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: box-shadow 0.2s;
}
.trial-pill .tp-btn:hover { box-shadow: var(--shadow-orange); }

/* ===== 年付节省标签 ===== */
.plan-card .annual-saving {
  font-size: 11px; color: #e74c3c; font-weight: 600;
  margin-top: 4px;
}

/* ===== 降级警告 ===== */
.downgrade-warning {
  background: #FFF3E0; border: 1px solid rgba(231,76,60,0.2);
  border-radius: 10px; padding: 12px; margin-bottom: 12px;
}
.downgrade-warning .dw-item {
  font-size: 12px; color: #c62828; padding: 4px 0;
  line-height: 1.5;
}

/* ===== 支付页 ===== */
.payment-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.payment-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 36px;
  width: 100%;
  max-width: 440px;
}
.payment-card h2 { font-size: 20px; font-weight: 800; margin-bottom: 6px; }
.payment-card .pay-sub { font-size: 14px; color: var(--text-sec); margin-bottom: 24px; }
.order-summary {
  background: var(--orange-soft);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 24px;
}
.order-summary .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  font-size: 14px;
}
.order-summary .row.total {
  border-top: 1px solid rgba(var(--shadow-rgb),0.2);
  margin-top: 8px;
  padding-top: 12px;
  font-size: 18px;
  font-weight: 800;
}
.order-summary .row.total .price { color: var(--orange); }
.pay-methods { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.pay-method {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 2px solid var(--border-2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.2s;
  touch-action: manipulation;
}
.pay-method:hover { border-color: var(--orange); }
.pay-method.selected { border-color: var(--orange); background: var(--orange-soft); }
.pay-method .pm-icon { width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.pay-method .pm-icon.wechat { background: #07c16020; }
.pay-method .pm-icon.alipay { background: #1677ff20; }
.pay-method .pm-name { font-size: 14px; font-weight: 600; flex: 1; }
.pay-method .pm-check { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--border-2); display: flex; align-items: center; justify-content: center; }
.pay-method.selected .pm-check { border-color: var(--orange); background: var(--orange); color: #fff; }

/* 支付二维码区域 */
.qr-section {
  display: none;
  flex-direction: column;
  align-items: center;
  padding: 20px 0;
}
.qr-section.show { display: flex; }
.qr-box {
  width: 200px; height: 200px;
  background: #f9f9f9;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-bottom: 16px;
  overflow: hidden;
}
.qr-mock {
  width: 180px; height: 180px;
  display: grid;
  grid-template-columns: repeat(21, 1fr);
  gap: 0;
}
.qr-mock div { background: #000; }
.qr-mock div.white { background: transparent; }
.qr-logo {
  position: absolute;
  width: 40px; height: 40px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  border: 3px solid #fff;
}
.qr-status { font-size: 14px; color: var(--text-sec); text-align: center; }
.qr-status.paying { color: var(--orange); }
.qr-status.success { color: #2e7d32; font-weight: 700; font-size: 16px; }

/* ===== Toast 提示 ===== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(20,20,20,0.92);
  color: #fff;
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 14px;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  max-width: 90vw;
  text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== 客服电话弹窗 ===== */
.contact-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.45);
  z-index: 10000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s;
}
.contact-overlay.show { opacity: 1; pointer-events: auto; }
.contact-modal {
  background: #fff; border-radius: 16px;
  padding: 36px 32px 28px;
  width: 340px; max-width: 90vw;
  text-align: center; position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  transform: scale(0.9);
  transition: transform 0.25s;
}
.contact-overlay.show .contact-modal { transform: scale(1); }
.contact-close {
  position: absolute; top: 12px; right: 16px;
  font-size: 24px; color: #999; cursor: pointer;
  line-height: 1; transition: color 0.2s;
}
.contact-close:hover { color: #333; }
.contact-icon { font-size: 48px; margin-bottom: 12px; }
.contact-title { font-size: 20px; font-weight: 700; color: #363636; margin: 0 0 8px; }
.contact-desc { font-size: 14px; color: #999; margin: 0 0 20px; line-height: 1.5; }
.contact-phone {
  display: block; font-size: 28px; font-weight: 800;
  color: #F08C2E; letter-spacing: 2px;
  margin-bottom: 16px; text-decoration: none;
  transition: opacity 0.2s;
}
.contact-phone:hover { opacity: 0.8; }
.contact-time { font-size: 13px; color: #bbb; margin: 0; }

/* ===== 退款申请弹窗 ===== */
.refund-modal {
  background: #fff; border-radius: 16px;
  padding: 36px 28px 24px;
  width: 400px; max-width: 92vw; max-height: 85vh; overflow-y: auto;
  text-align: center; position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  transform: scale(0.9);
  transition: transform 0.25s;
}
.contact-overlay.show .refund-modal { transform: scale(1); }
.refund-form { text-align: left; margin-top: 8px; }
.rf-group { margin-bottom: 14px; }
.rf-label {
  display: block; font-size: 14px; font-weight: 600;
  color: #363636; margin-bottom: 6px;
}
.rf-req { color: #e53935; }
.rf-input, .rf-select, .rf-textarea {
  width: 100%; box-sizing: border-box;
  border: 1.5px solid #e0e0e0; border-radius: 10px;
  padding: 10px 14px; font-size: 14px; color: #333;
  background: #fafafa; outline: none;
  transition: border-color 0.2s, background 0.2s;
  font-family: inherit;
}
.rf-input:focus, .rf-select:focus, .rf-textarea:focus {
  border-color: #F08C2E; background: #fff;
}
.rf-textarea { resize: vertical; min-height: 64px; }
.rf-select { -webkit-appearance: none; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23999' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center;
  padding-right: 36px;
}
.rf-tips {
  background: #FFF6EC; border: 1px dashed #FFD9A0;
  border-radius: 8px; padding: 10px 14px; margin-bottom: 16px;
}
.rf-tips p { font-size: 12px; color: #b8860b; margin: 0; line-height: 1.6; }
.rf-submit {
  width: 100%; padding: 12px; font-size: 15px; font-weight: 700;
  color: #fff; background: linear-gradient(135deg, #FFAA33, #FF8A00);
  border: none; border-radius: 10px; cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}
.rf-submit:active { transform: scale(0.98); }
.rf-submit:hover { opacity: 0.9; }

/* 退款成功弹窗 */
.refund-success-modal {
  background: #fff; border-radius: 16px;
  padding: 36px 28px 24px;
  width: 380px; max-width: 92vw;
  text-align: center; position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  transform: scale(0.9);
  transition: transform 0.25s;
}
.contact-overlay.show .refund-success-modal { transform: scale(1); }
.rs-icon { font-size: 52px; margin-bottom: 12px; }
.rs-code {
  font-size: 22px; font-weight: 800; color: #F08C2E;
  letter-spacing: 2px; margin: 8px 0 16px;
  background: #FFF6EC; border-radius: 8px; padding: 8px;
}
.rs-info { font-size: 13px; color: #888; line-height: 1.7; margin: 0 0 4px; }
.rs-info strong { color: #F08C2E; }
.rs-btn {
  margin-top: 18px; padding: 10px 32px; font-size: 15px; font-weight: 600;
  color: #fff; background: linear-gradient(135deg, #FFAA33, #FF8A00);
  border: none; border-radius: 10px; cursor: pointer;
  transition: opacity 0.2s;
}
.rs-btn:hover { opacity: 0.9; }

/* ===== 注册协议勾选 ===== */
.agree-row {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 13px; color: var(--text-sec); line-height: 1.5;
}
.agree-row input[type="checkbox"] {
  width: 16px; height: 16px; margin-top: 2px;
  accent-color: var(--orange); cursor: pointer; flex-shrink: 0;
}
.agree-row label { cursor: pointer; }
.agree-row a {
  color: var(--orange); text-decoration: none; font-weight: 600;
}
.agree-row a:hover { text-decoration: underline; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ===== 产品落地页 ===== */
.landing-view { flex: 1; flex-direction: column; }

/* Hero */
.hero-section {
  display: flex; align-items: center; gap: 40px;
  max-width: 1100px; margin: 0 auto;
  padding: 60px 40px 40px;
  position: relative;
}
.hero-section::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 50% 80% at 20% 30%, rgba(255,107,53,0.08), transparent),
    radial-gradient(ellipse 40% 60% at 80% 20%, rgba(78,205,196,0.06), transparent),
    radial-gradient(ellipse 50% 70% at 60% 80%, rgba(167,125,224,0.06), transparent);
  border-radius: 24px; pointer-events: none;
}
.hero-content { flex: 1; min-width: 0; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 16px;
  background: linear-gradient(135deg, #FFF1DE, #FFE4C4);
  border: 1px solid #FFB454;
  border-radius: 20px; font-size: 13px; font-weight: 700;
  color: #E07020; margin-bottom: 16px;
  box-shadow: 0 2px 12px rgba(240,140,46,0.15);
}
.hero-title {
  font-size: 44px; font-weight: 800; color: var(--text);
  line-height: 1.15; margin-bottom: 14px;
  background: linear-gradient(135deg, #FF6B35 0%, #F7931E 40%, #FFB454 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-tagline {
  font-size: 20px; font-weight: 700; color: var(--text);
  line-height: 1.5; margin-bottom: 10px;
}
.hero-tagline .hl {
  background: linear-gradient(135deg, #FF6B35, #F7931E);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  font-weight: 800;
}
.hero-desc {
  font-size: 14px; color: var(--text-sec); line-height: 1.7;
  margin-bottom: 24px; max-width: 480px;
}
.hero-cta { display: flex; gap: 12px; margin-bottom: 16px; }
.cta-primary {
  padding: 13px 32px; background: linear-gradient(135deg, #FF6B35, #F7931E, #FFB454); color: #fff;
  border: none; border-radius: 24px; font-size: 15px; font-weight: 700;
  cursor: pointer; transition: all 0.2s; touch-action: manipulation;
  box-shadow: 0 4px 16px rgba(255,107,53,0.3);
}
.cta-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,107,53,0.4); }
.cta-primary:active { transform: translateY(0); }
.cta-primary.lg { padding: 16px 48px; font-size: 17px; border-radius: 28px; box-shadow: 0 6px 20px rgba(255,107,53,0.35); }
.cta-secondary {
  padding: 13px 28px; background: var(--surface); color: var(--text);
  border: 1.5px solid var(--border); border-radius: 24px;
  font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.2s;
}
.cta-secondary:hover { border-color: var(--orange); color: var(--orange); }
.hero-trust { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-trust span { font-size: 13px; color: var(--text-sec); font-weight: 600; }

/* Hero 模拟看板 */
.hero-visual { flex-shrink: 0; width: 420px; }
.mock-dashboard {
  background: var(--surface); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); border: 1px solid var(--border-2);
  overflow: hidden; transform: perspective(800px) rotateY(-5deg);
}
.md-topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; border-bottom: 1px solid var(--border-2);
  background: var(--surface-2);
}
.md-logo {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--orange-grad); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 800;
}
.md-tabs { display: flex; gap: 12px; }
.md-tab {
  font-size: 11px; color: var(--text-mut); font-weight: 600;
  padding: 3px 0; border-bottom: 2px solid transparent;
}
.md-tab.active { color: var(--orange); border-bottom-color: var(--orange); }
.md-body { padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.md-store-card {
  background: var(--orange-soft); border-radius: 10px; padding: 12px 14px;
}
.md-store-card.alt { background: var(--surface-2); }
.md-store-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 8px; font-size: 13px; font-weight: 700; color: var(--text);
}
.md-revenue { font-size: 18px; font-weight: 800; color: var(--orange); }
.md-metrics { display: flex; gap: 16px; }
.md-metric { display: flex; flex-direction: column; gap: 2px; }
.md-m-label { font-size: 10px; color: var(--text-mut); }
.md-m-value { font-size: 14px; font-weight: 700; color: var(--text); }

/* 通用 section */
.features-section, .steps-section, .trust-section, .bottom-cta {
  max-width: 1100px; margin: 0 auto; padding: 48px 40px;
}
.section-title {
  font-size: 28px; font-weight: 800; color: var(--text);
  text-align: center; margin-bottom: 8px;
}
.section-sub {
  font-size: 15px; color: var(--text-sec); text-align: center;
  margin-bottom: 32px;
}

/* 功能卡片 */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.feature-card {
  background: var(--surface); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 24px;
  border: 1px solid var(--border-2); transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-card .fc-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 14px;
  color: #fff;
}
.feature-card:nth-child(1) .fc-icon { background: linear-gradient(135deg, #FF6B35, #F7931E); box-shadow: 0 4px 14px rgba(255,107,53,0.3); }
.feature-card:nth-child(2) .fc-icon { background: linear-gradient(135deg, #4ECDC4, #44A08D); box-shadow: 0 4px 14px rgba(78,205,196,0.3); }
.feature-card:nth-child(3) .fc-icon { background: linear-gradient(135deg, #5B7CFA, #3B5BDB); box-shadow: 0 4px 14px rgba(91,124,250,0.3); }
.feature-card:nth-child(4) .fc-icon { background: linear-gradient(135deg, #A37DE0, #7B4FE0); box-shadow: 0 4px 14px rgba(163,125,224,0.3); }
.feature-card:nth-child(5) .fc-icon { background: linear-gradient(135deg, #FF6B9D, #C44569); box-shadow: 0 4px 14px rgba(255,107,157,0.3); }
.feature-card:nth-child(6) .fc-icon { background: linear-gradient(135deg, #FFD93D, #F6A609); box-shadow: 0 4px 14px rgba(255,217,61,0.3); }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.feature-card p { font-size: 13px; color: var(--text-sec); line-height: 1.6; }

/* 步骤卡片 */
.steps-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.step-card {
  text-align: center; padding: 28px 20px;
  background: var(--surface); border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid var(--border-2);
}
.step-card .sc-num {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--orange-grad); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800; margin: 0 auto 14px;
  box-shadow: var(--shadow-orange);
}
.step-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.step-card p { font-size: 13px; color: var(--text-sec); line-height: 1.6; }

/* 信任卡片 */
.trust-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.trust-card {
  text-align: center; padding: 24px 16px;
  background: var(--surface); border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid var(--border-2);
}
.trust-card .tc-icon { font-size: 28px; margin-bottom: 10px; }
.trust-card h3 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.trust-card p { font-size: 12px; color: var(--text-sec); line-height: 1.5; }

/* 底部 CTA */
.bottom-cta {
  text-align: center; padding: 56px 40px 64px;
}
.bottom-cta h2 {
  font-size: 26px; font-weight: 800; color: var(--text); margin-bottom: 8px;
}
.bottom-cta p {
  font-size: 15px; color: var(--text-sec); margin-bottom: 24px;
}

/* 落地页移动端 */
@media (max-width: 768px) {
  .hero-section { flex-direction: column; padding: 32px 20px 24px; gap: 28px; }
  .hero-visual { width: 100%; max-width: 380px; }
  .hero-title { font-size: 32px; }
  .hero-tagline { font-size: 17px; }
  .hero-desc { font-size: 13px; }
  .hero-cta { flex-direction: column; }
  .cta-primary, .cta-secondary { width: 100%; text-align: center; }
  .features-section, .steps-section, .trust-section, .bottom-cta { padding: 32px 20px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 22px; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 26px; }
  .hero-tagline { font-size: 15px; }
  .hero-trust { flex-direction: column; gap: 6px; }
  .trust-grid { grid-template-columns: 1fr; }
  .mock-dashboard { transform: none; }
}

/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
  .saas-header { padding: 12px 16px; }
  .saas-logo { font-size: 16px; }
  .saas-logo .logo-icon { width: 32px; height: 32px; font-size: 16px; border-radius: 8px; }
  .auth-card { padding: 28px 20px; }
  .pricing-container { padding: 30px 16px; }
  .pricing-hero h1 { font-size: 24px; }
  .pricing-hero p { font-size: 14px; }
  .pl-row { flex-wrap: wrap; gap: 12px; padding: 16px 16px 16px 0; }
  .pl-left { min-width: 0; flex: 1; }
  .pl-tags { flex-basis: 100%; gap: 4px; }
  .pl-tag { font-size: 11px; padding: 3px 8px; }
  .pl-new-badge { font-size: 8px; padding: 1px 4px; }
  .pl-badge { font-size: 9px; padding: 1px 6px; }
  .pl-action { flex-basis: 100%; }
  .pl-btn { width: 100%; }
  .pl-amount { font-size: 22px; }
  .pl-name { font-size: 15px; }
  .payment-card { padding: 24px 20px; }
  .feature-table th, .feature-table td { padding: 10px 12px; font-size: 13px; }
  .security-bar { padding: 6px 16px; font-size: 11px; }
  .security-bar .sb-item { gap: 3px; }
  .auth-security { flex-direction: column; gap: 6px; }
  .trial-pill { padding: 8px 12px; gap: 8px; }
  .trial-pill .tp-icon { font-size: 16px; }
  .trial-pill .tp-text { font-size: 12px; }
  .trial-pill .tp-btn { padding: 5px 12px; font-size: 11px; }
  .billing-toggle .bt-btn { padding: 6px 12px; font-size: 12px; }
  .billing-toggle .bt-save { font-size: 9px; padding: 1px 4px; }
  .billing-section { margin-top: 16px; }
  .annual-benefits { margin-top: 10px; padding: 6px 12px; gap: 6px; }
  .annual-benefits .ab-item { font-size: 11px; }
  .annual-benefits .ab-divider { font-size: 11px; }
  .billing-auto-renew { gap: 6px; padding: 8px 12px; margin-top: 32px !important; }
  .ar-checkbox { font-size: 12px; }
  .ar-custom { width: 16px; height: 16px; }
  .ar-single-price { font-size: 11px; }
  .ar-divider { display: none; }
  .billing-rules { font-size: 11px; padding: 8px 12px; }
/* 计费区域 */
.billing-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 20px;
  width: 100%;
}
/* 年付优点宣传 */
.annual-benefits {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 12px auto 0;
  padding: 8px 16px;
  background: linear-gradient(135deg, #FFF3E0, #FFE8CC);
  border-radius: 20px;
  border: 1px solid #FFCC80;
  width: fit-content;
  max-width: 90%;
  text-align: center;
}
.annual-benefits .ab-item {
  font-size: 12px;
  font-weight: 600;
  color: #E65100;
}
.annual-benefits .ab-divider {
  color: #FFB74D;
  font-size: 12px;
}
.billing-toggle {
  display: flex;
  margin: 0 auto;
}
/* 自动续费选项 */
.billing-auto-renew {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: nowrap;
  background: #FFF8F0;
  border: 1px solid #FFE0B2;
  border-radius: 10px;
  padding: 10px 16px;
  box-sizing: border-box;
  visibility: visible;
  opacity: 1;
  transition: opacity 0.2s;
  max-width: 520px;
  min-height: 44px;
  margin: 48px auto 0;
}
.billing-auto-renew.hide {
  visibility: hidden;
  opacity: 0;
}
.ar-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-sec);
}
.ar-checkbox input[type="checkbox"] {
  display: none;
}
.ar-custom {
  width: 18px;
  height: 18px;
  border: 2px solid #ccc;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}
.ar-checkbox input:checked + .ar-custom {
  background: var(--orange-grad);
  border-color: var(--orange);
}
.ar-checkbox input:checked + .ar-custom::after {
  content: '✓';
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}
.ar-text b {
  color: var(--orange-dark);
}
.ar-divider {
  color: #ddd;
  font-size: 14px;
  min-width: 10px;
  text-align: center;
}
.ar-single-price {
  font-size: 12px;
  color: #999;
  white-space: nowrap;
}
  .pricing-container { flex-direction: column; gap: 16px; padding: 30px 16px; }
  .security-rail {
    flex-direction: row;
    width: 100%;
    justify-content: space-around;
    gap: 8px;
    padding: 12px 8px;
    position: static;
    top: auto;
  }
  .security-rail .sr-label {
    writing-mode: horizontal-tb;
    letter-spacing: 0;
    font-size: 10px;
  }
  .security-rail .sr-icon { font-size: 16px; }
}

@media (max-width: 480px) {
  .saas-header-actions { gap: 10px; }
  .saas-header-actions a { font-size: 13px; }
  .auth-card h2 { font-size: 20px; }
  .code-input-row { flex-direction: column; gap: 8px; }
  .btn-code { width: 100%; }
  .pl-left { min-width: 0; }
  .pl-tags { gap: 4px; justify-content: center; }
  /* 手机端安全条移到底部横向排列 */
  .security-rail {
    flex-direction: row !important;
    width: 100% !important;
    justify-content: space-around !important;
    gap: 8px !important;
    padding: 12px 8px !important;
    position: static !important;
    top: auto !important;
    order: 999 !important;
    margin-top: 20px !important;
  }
  .security-rail .sr-label {
    writing-mode: horizontal-tb !important;
    letter-spacing: 0 !important;
    font-size: 10px !important;
  }
  .security-rail .sr-icon { font-size: 16px !important; }
  .security-rail .sr-item { gap: 2px !important; }
}

/* ===== 安全标识条 ===== */
.security-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 7px 40px;
  background: linear-gradient(135deg, #FFF1DE, #FFE4C4, #FFF1DE);
  border-bottom: 1px solid #FFD9A0;
  font-size: 12px;
  color: #D4761E;
  font-weight: 700;
}
.security-bar .sb-item {
  display: flex;
  align-items: center;
  gap: 4px;
}
.security-bar .sb-icon { font-size: 14px; }
.security-bar .sb-divider { color: var(--border); }

/* ===== 验证码输入行 ===== */
.code-input-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.code-input-row input {
  flex: 1;
  padding: 12px 14px;
  border: 1.5px solid var(--border-2);
  border-radius: var(--radius-sm);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
  background: var(--surface-2);
  letter-spacing: 4px;
  text-align: center;
  font-weight: 700;
}
.code-input-row input:focus { border-color: var(--orange); background: #fff; }
.btn-code {
  padding: 12px 16px;
  border: 1.5px solid var(--orange);
  background: var(--surface);
  color: var(--orange);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
  touch-action: manipulation;
  min-width: 110px;
}
.btn-code:hover { background: var(--orange-soft); }
.btn-code.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  border-color: var(--border);
  color: var(--text-sec);
}

/* ===== 验证码提示（演示模式） ===== */
.dev-code-toast {
  position: fixed;
  top: 80px;
  right: 20px;
  background: rgba(20,20,20,0.92);
  color: #fff;
  padding: 12px 20px;
  border-radius: 12px;
  z-index: 9999;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  animation: slideInRight 0.3s ease;
}
@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
.dev-code-toast .dct-label {
  font-size: 11px;
  color: #aaa;
  margin-bottom: 4px;
}
.dev-code-toast .dct-code {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 6px;
  color: var(--orange);
}

/* ===== 登录/注册品牌区域 ===== */
.auth-brand {
  text-align: center;
  margin-bottom: 24px;
}
.auth-brand .logo-icon.big {
  width: 56px;
  height: 56px;
  font-size: 28px;
  border-radius: 14px;
  margin: 0 auto 12px;
}
.auth-brand h2 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 4px;
}
.auth-brand .auth-sub {
  margin-bottom: 0;
}

/* ===== 登录/注册安全保障 ===== */
.auth-security {
  display: flex;
  justify-content: space-around;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-2);
}
.auth-security .as-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--text-sec);
  font-weight: 600;
}
.auth-security .as-icon { font-size: 14px; }

/* ===== 横向定价列表 ===== */
.pricing-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}
.pl-row {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 24px 20px 0;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.pl-row:hover { transform: translateX(2px); box-shadow: var(--shadow-lg); }

/* 左侧色条 */
.pl-accent {
  width: 5px;
  align-self: stretch;
  background: #e0e0e0;
  border-radius: 0;
  flex-shrink: 0;
}
.pl-row.free .pl-accent { background: #b0b0b0; }
.pl-row.pro .pl-accent { background: var(--orange-grad); }
.pl-row.ultimate .pl-accent { background: var(--purple-grad); }

/* 热门行高亮 */
.pl-row.popular {
  border: 1.5px solid var(--orange);
  background: linear-gradient(135deg, var(--surface), var(--surface-2));
}

/* 左侧：名称+价格 */
.pl-left {
  flex-shrink: 0;
  min-width: 160px;
}
.pl-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.pl-name {
  font-size: 17px;
  font-weight: 800;
}
.pl-badge {
  padding: 1px 8px;
  background: var(--orange-grad);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  border-radius: 10px;
}
.pl-badge.ultimate-badge {
  background: linear-gradient(135deg, #7B1FA2, #9C27B0);
}
/* 旗舰版卡片高亮 */
.pl-row.ultimate {
  border: 1.5px solid #CE93D8;
  background: linear-gradient(135deg, #FAF5FF, #fff);
}
.pl-row.ultimate:hover {
  border-color: #9C27B0;
  box-shadow: 0 6px 20px rgba(156,39,176,0.2);
}
.pl-current-tag {
  padding: 1px 8px;
  background: #e8f5e9;
  color: #2e7d32;
  font-size: 10px;
  font-weight: 700;
  border-radius: 10px;
}
.pl-price {
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.pl-amount {
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
}
.pl-period {
  font-size: 13px;
  color: var(--text-sec);
}
.pl-save {
  font-size: 11px;
  color: #e74c3c;
  font-weight: 700;
  margin-left: 6px;
}

/* 中间：标签 */
.pl-tags {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  justify-content: center;
}
.pl-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.pl-tag.yes {
  background: #f0fdf4;
  color: #059669;
}
.pl-tag.no {
  background: var(--surface-2);
  color: var(--text-mut);
  text-decoration: line-through;
}
/* 新增功能高亮（旗舰版专属） */
.pl-tag.new-feature {
  background: linear-gradient(135deg, #FFF3E0, #FFE0B2);
  color: #E65100;
  border: 1px solid #FFB74D;
  font-weight: 700;
}
.pl-new-badge {
  display: inline-block;
  background: linear-gradient(135deg, #FF6F00, #FF8F00);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 8px;
  margin-left: 5px;
  animation: pulseNew 1.5s infinite;
}
@keyframes pulseNew {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(0.95); }
}

/* 右侧：按钮 */
.pl-action {
  flex-shrink: 0;
}
.pl-btn {
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid var(--orange);
  transition: all 0.2s;
  touch-action: manipulation;
  white-space: nowrap;
}
.pl-btn.outline { background: var(--surface); color: var(--orange); }
.pl-btn.outline:hover { background: var(--orange-soft); }
.pl-btn.fill {
  background: var(--orange-grad);
  color: #fff;
  border-color: transparent;
}
.pl-btn.fill:hover { box-shadow: var(--shadow-orange); }
.pl-btn.current {
  background: var(--surface-2);
  color: var(--text-sec);
  border-color: var(--border-2);
  cursor: default;
}
.pl-row.ultimate .pl-btn.outline { border-color: var(--purple); color: var(--purple); }
.pl-row.ultimate .pl-btn.fill { background: var(--purple-grad); border-color: transparent; }

/* ===== 功能对比折叠 ===== */
.feature-details {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.feature-details summary {
  padding: 14px 20px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-sec);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: color 0.2s;
}
.feature-details summary::-webkit-details-marker { display: none; }
.feature-details summary:hover { color: var(--orange); }
.feature-details summary::after {
  content: '▾';
  float: right;
  transition: transform 0.2s;
}
.feature-details[open] summary::after { transform: rotate(180deg); }
.feature-details .feature-table { border-radius: 0; }

/* ===== 右侧安全竖条 ===== */
.security-rail {
  width: 56px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 24px 6px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-2);
  position: sticky;
  top: 80px;
  align-self: flex-start;
}
.security-rail .sr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.security-rail .sr-icon {
  font-size: 18px;
  line-height: 1;
}
.security-rail .sr-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-sec);
  writing-mode: vertical-rl;
  letter-spacing: 2px;
  line-height: 1.4;
}

/* ===== 支付页安全保障 ===== */
.pay-security {
  text-align: center;
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-sec);
  padding: 10px;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-2);
}

/* ===== 产品 Footer ===== */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border-2);
  padding: 40px 24px 24px;
  margin-top: auto;
}
.sf-inner {
  max-width: 960px; margin: 0 auto;
  display: flex; gap: 48px; flex-wrap: wrap;
}
.sf-brand { flex: 1; min-width: 240px; }
.sf-logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 16px; font-weight: 800; color: var(--text);
}
.sf-logo .logo-icon {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--orange-grad);
  color: #fff; font-size: 14px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.sf-desc {
  font-size: 13px; color: var(--text-sec); line-height: 1.6;
  margin-top: 12px; max-width: 320px;
}
.sf-links { display: flex; gap: 48px; flex-wrap: wrap; }
.sf-col h4 {
  font-size: 13px; font-weight: 700; color: var(--text);
  margin-bottom: 12px;
}
.sf-col a {
  display: block; font-size: 13px; color: var(--text-sec);
  text-decoration: none; padding: 4px 0; cursor: pointer;
  transition: color 0.2s;
}
.sf-col a:hover { color: var(--orange); }
.sf-bottom {
  max-width: 960px; margin: 32px auto 0;
  padding-top: 20px; border-top: 1px solid var(--border-2);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 8px;
  font-size: 12px; color: var(--text-mut);
}
.sf-icp { font-size: 11px; }

@media (max-width: 600px) {
  .sf-inner { flex-direction: column; gap: 24px; }
  .sf-links { gap: 32px; }
  .sf-bottom { flex-direction: column; text-align: center; }
}