/* ==========================================================================
   中国保函网 · 首页样式
   布局：Flex + Grid，移动端优先断点式适配
   ========================================================================== */

/* ---------- 变量 ---------- */
:root {
  --c-primary: #0a2f6b;
  --c-primary-600: #12458f;
  --c-primary-400: #2f7bff;
  --c-accent: #f2a33c;
  --c-accent-600: #dd8a1c;
  --c-ink: #101828;
  --c-body: #4a5568;
  --c-muted: #7b8794;
  --c-line: #e4e9f2;
  --c-bg: #ffffff;
  --c-bg-soft: #f5f7fb;
  --c-success: #12a06a;
  --c-danger: #e0443e;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(16, 24, 40, .06);
  --shadow: 0 10px 30px rgba(16, 24, 40, .08);
  --shadow-lg: 0 24px 60px rgba(10, 47, 107, .16);

  --container: 1200px;
  --gutter: 20px;
  --header-h: 68px;

  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-body);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { color: var(--c-ink); line-height: 1.3; margin: 0; font-weight: 700; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }

:focus-visible {
  outline: 3px solid rgba(47, 123, 255, .55);
  outline-offset: 2px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--c-primary);
  color: #fff;
  padding: 10px 16px;
}
.skip-link:focus { left: 12px; top: 12px; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary-600), var(--c-primary));
  color: #fff;
  box-shadow: 0 8px 20px rgba(10, 47, 107, .25);
}
.btn-primary:hover { box-shadow: 0 12px 28px rgba(10, 47, 107, .34); }

.btn-ghost {
  background: #fff;
  border-color: var(--c-line);
  color: var(--c-primary);
}
.btn-ghost:hover { border-color: var(--c-primary-400); color: var(--c-primary-400); }

.btn-outline {
  background: #fff;
  border-color: var(--c-primary-400);
  color: var(--c-primary-600);
}
.btn-outline:hover { background: rgba(47, 123, 255, .07); }

.btn-light { background: #fff; color: var(--c-primary); }
.btn-light:hover { background: rgba(255, 255, 255, .88); }

.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, .55);
  color: #fff;
}
.btn-outline-light:hover { background: rgba(255, 255, 255, .14); }

.btn-sm { min-height: 38px; padding: 0 18px; font-size: 14px; }
.btn-block { width: 100%; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.site-header.is-stuck {
  border-bottom-color: var(--c-line);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--header-h);
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 40px;
  height: 40px;
  flex: none;
  display: grid;
  place-items: center;
}
.brand-mark svg { width: 100%; height: 100%; }
.brand-mark-sm { width: 32px; height: 32px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 18px; color: var(--c-primary); letter-spacing: .5px; }
.brand-text em { font-size: 12px; font-style: normal; color: var(--c-muted); letter-spacing: .4px; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav-list { display: flex; align-items: center; gap: 26px; }
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-body);
  padding: 6px 0;
  transition: color .18s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--c-primary-400);
  transition: width .22s ease;
}
.nav-link:hover,
.nav-link.is-active { color: var(--c-primary); }
.nav-link:hover::after,
.nav-link.is-active::after { width: 100%; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  flex-direction: column;
  justify-content: space-between;
  background: transparent;
  border: 1px solid var(--c-line);
  border-radius: 10px;
}
.nav-toggle-bar {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--c-primary);
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(40px, 7vw, 84px) 0 clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, #f3f7ff 0%, #ffffff 62%);
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: .5;
}
.blob-1 { width: 420px; height: 420px; top: -140px; left: -120px; background: rgba(47, 123, 255, .35); }
.blob-2 { width: 380px; height: 380px; bottom: -160px; right: -100px; background: rgba(242, 163, 60, .28); }
.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16, 24, 40, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 24, 40, .045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 78%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(47, 123, 255, .1);
  color: var(--c-primary-600);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .3px;
}
.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-primary-400);
  box-shadow: 0 0 0 4px rgba(47, 123, 255, .18);
}

.hero-title {
  font-size: clamp(30px, 5.2vw, 52px);
  letter-spacing: -.5px;
  margin-bottom: 16px;
}
.hero-title .accent {
  background: linear-gradient(100deg, var(--c-primary-400), var(--c-primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-desc {
  max-width: 52ch;
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--c-body);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 22px;
  font-size: 14px;
  color: var(--c-ink);
}
.hero-badges li { display: flex; align-items: center; gap: 6px; }
.hero-badges .tick { color: var(--c-success); font-weight: 700; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px dashed var(--c-line);
}
.stat-num {
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 800;
  color: var(--c-primary);
  font-variant-numeric: tabular-nums;
}
.stat-label { font-size: 13px; color: var(--c-muted); }

/* ---------- 验证卡片 ---------- */
.verify-card {
  position: relative;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
}
.verify-head { margin-bottom: 20px; }
.verify-title { font-size: 21px; }
.verify-sub { margin-top: 6px; font-size: 14px; color: var(--c-muted); }

.verify-form { display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field label { font-size: 14px; font-weight: 600; color: var(--c-ink); }

.control {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-bg-soft);
  transition: border-color .18s ease, box-shadow .18s ease, background-color .18s ease;
}
.control:focus-within {
  border-color: var(--c-primary-400);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(47, 123, 255, .14);
}
.control.is-invalid { border-color: #e0443e; box-shadow: 0 0 0 4px rgba(224, 68, 62, .12); }
.control-icon { width: 18px; height: 18px; flex: none; color: var(--c-muted); }
.control-icon svg { width: 100%; height: 100%; }
.control input {
  flex: 1;
  min-width: 0;
  height: 46px;
  border: 0;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 15px;
  color: var(--c-ink);
  letter-spacing: .4px;
}
.control input::placeholder { color: #aab3c0; letter-spacing: 0; }

.field-error {
  min-height: 0;
  font-size: 12.5px;
  color: #e0443e;
  display: none;
}
.field-error.is-show { display: block; }

/* 提交按钮 loading */
#verifyBtn { position: relative; }
#verifyBtn .spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, .4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
#verifyBtn.is-loading .spinner { display: block; }
#verifyBtn.is-loading { pointer-events: none; opacity: .9; }
@keyframes spin { to { transform: rotate(360deg); } }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}
.badge-success { background: rgba(18, 160, 106, .14); color: var(--c-success); }

/* ---------- 查询结果页 ---------- */
.result-page {
  min-height: calc(100vh - var(--header-h));
  padding: clamp(24px, 4vw, 44px) 0 clamp(40px, 6vw, 72px);
  background: linear-gradient(180deg, #eef4ff 0%, var(--c-bg-soft) 34%, #ffffff 100%);
}

.result-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  padding: 16px clamp(18px, 3vw, 26px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.result-meta { display: flex; flex-wrap: wrap; gap: 8px 34px; min-width: 0; }
.result-meta > div { display: flex; align-items: baseline; gap: 4px; min-width: 0; }
.result-meta dt { font-size: 14.5px; color: var(--c-muted); white-space: nowrap; }
.result-meta dt::after { content: "："; }
.result-meta dd {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .6px;
  color: var(--c-primary-400);
  word-break: break-all;
}

.result-main {
  position: relative;
  margin-top: clamp(16px, 2.4vw, 24px);
  padding: clamp(24px, 4.2vw, 48px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: fadeUp .35s ease both;
}

.result-watermark {
  position: absolute;
  right: -2%;
  top: 50%;
  width: min(34vw, 360px);
  transform: translateY(-50%);
  color: var(--c-success);
  opacity: .09;
  pointer-events: none;
}
.result-watermark svg { width: 100%; height: auto; }

.result-hero {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: clamp(18px, 3vw, 26px);
  margin-bottom: clamp(8px, 1.6vw, 16px);
  border-bottom: 1px dashed var(--c-line);
}
.check-mark {
  flex: none;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(18, 160, 106, .12);
  color: var(--c-success);
}
.check-mark svg { width: 28px; height: 28px; }
.result-hero-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
}
.result-title { font-size: clamp(21px, 2.6vw, 27px); }
.result-sub { font-size: 13.5px; color: var(--c-muted); }

/* 结果页 · 失败态 */
.result-main .icon-fail { display: none; }
.result-main.is-fail .icon-success { display: none; }
.result-main.is-fail .icon-fail { display: block; }
.result-main.is-fail .check-mark { background: rgba(224, 68, 62, .12); color: var(--c-danger); }
.result-main.is-fail .result-watermark { color: var(--c-danger); }
.badge-fail { background: rgba(224, 68, 62, .12); color: var(--c-danger); }

.result-fields[hidden],
.result-empty[hidden] { display: none; }

.result-empty {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 14px;
  justify-items: start;
  max-width: 680px;
  padding: clamp(12px, 2vw, 20px) 0;
}
.result-empty-title { font-size: 15.5px; font-weight: 600; color: var(--c-ink); }
.result-empty .tips-warn { width: 100%; margin-top: 0; }

.result-fields {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: clamp(8px, 2vw, 16px) 0;
}
.result-field {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(16, 24, 40, .08);
  font-size: 15px;
}
.result-field:last-child { border-bottom: 0; }
.result-field dt { color: var(--c-muted); }
.result-field dd { color: var(--c-ink); font-weight: 600; word-break: break-word; }

.result-foot {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-top: clamp(14px, 2.4vw, 20px);
  border-top: 1px solid var(--c-line);
}
.result-stamp { font-size: 13px; color: var(--c-muted); }
.result-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.result-note {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-muted);
}

.site-footer-mini { padding: 22px 0; }
.site-footer-mini .footer-bottom { margin-top: 0; padding-top: 0; border-top: 0; }

/* 结果页 · 窄屏适配 */
@media (max-width: 760px) {
  .result-bar { align-items: stretch; }
  .result-bar .btn { width: 100%; }
  .result-meta { flex-direction: column; gap: 6px; }
  .result-watermark { width: 64vw; right: -18%; top: 32%; opacity: .07; }
  .result-hero { gap: 12px; }
  .check-mark { width: 44px; height: 44px; }
  .check-mark svg { width: 24px; height: 24px; }
  .result-field {
    grid-template-columns: 1fr;
    gap: 3px;
    padding: 11px 0;
  }
  .result-field dt { font-size: 13px; }
  .result-field dd { font-size: 15px; }
  .result-actions { width: 100%; }
  .result-actions .btn { flex: 1 1 0; }
}

/* 结果页 · 打印 */
@media print {
  .site-header, .site-footer, .to-top, .result-actions, .result-watermark { display: none !important; }
  .result-page { padding: 0; background: #fff; }
  .result-main, .result-bar { box-shadow: none; border-color: #ccc; }
}

/* 查验方法 */
.tips {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--c-line);
}
.tips-title { font-size: 15px; margin-bottom: 10px; }
.tips-list { display: grid; gap: 8px; counter-reset: tip; }
.tips-list li {
  position: relative;
  padding-left: 22px;
  font-size: 13.5px;
  color: var(--c-body);
}
.tips-list li::before {
  counter-increment: tip;
  content: counter(tip) ".";
  position: absolute;
  left: 0;
  color: var(--c-primary-400);
  font-weight: 700;
}
.tips-list code {
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--c-bg-soft);
  color: var(--c-primary-600);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
}
.tips-note { margin-top: 12px; font-size: 13px; color: var(--c-muted); }
.tips-warn {
  margin-top: 6px;
  padding: 10px 12px;
  border-left: 3px solid var(--c-accent);
  border-radius: 6px;
  background: rgba(242, 163, 60, .1);
  font-size: 13px;
  color: #8a5a10;
}

/* ---------- 通用 section ---------- */
.section { padding: clamp(48px, 7vw, 88px) 0; }
.section-tint { background: var(--c-bg-soft); }

.section-head {
  max-width: 720px;
  margin: 0 auto clamp(28px, 4vw, 48px);
  text-align: center;
}
.section-head .eyebrow { margin-inline: auto; }
.section-title { font-size: clamp(24px, 3.4vw, 34px); }
.section-desc { margin-top: 12px; font-size: 15.5px; }

/* ---------- 保函产品 ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.card {
  display: flex;
  flex-direction: column;
  padding: 26px 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(47, 123, 255, .35);
  box-shadow: var(--shadow);
}
.card-icon {
  width: 46px;
  height: 46px;
  margin-bottom: 16px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(47, 123, 255, .14), rgba(10, 47, 107, .08));
  color: var(--c-primary-600);
}
.card-icon svg { width: 24px; height: 24px; }
.card-title { font-size: 18px; margin-bottom: 8px; }
.card-text { flex: 1; font-size: 14.5px; }
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.card-meta li {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--c-bg-soft);
  color: var(--c-primary-600);
  font-size: 12.5px;
  font-weight: 600;
}

/* ---------- 办理流程 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 26px 22px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--c-line);
}
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 42px;
  right: -14px;
  width: 14px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-primary-400) 0 4px, transparent 4px 8px);
}
.step-num {
  display: block;
  font-size: 26px;
  font-weight: 800;
  background: linear-gradient(120deg, var(--c-primary-400), var(--c-primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.step-title { margin: 8px 0 6px; font-size: 17px; }
.step-text { font-size: 14.5px; }

/* ---------- 服务优势 ---------- */
.advantage-inner {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}
.advantage-copy .section-desc { margin-bottom: 24px; }
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.feat {
  padding: 22px;
  border-radius: var(--radius);
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  transition: background-color .2s ease, border-color .2s ease;
}
.feat:hover { background: #fff; border-color: rgba(47, 123, 255, .3); }
.feat h3 { font-size: 16.5px; margin-bottom: 6px; }
.feat p { font-size: 14px; }

/* ---------- FAQ ---------- */
.faq-inner {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}
.section-head-left { margin: 0; text-align: left; }
.section-head-left .eyebrow { margin-inline: 0; }

.accordion { display: grid; gap: 12px; }
.acc-item {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}
.acc-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border: 0;
  background: transparent;
  text-align: left;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--c-ink);
}
.acc-icon {
  position: relative;
  width: 18px;
  height: 18px;
  flex: none;
}
.acc-icon::before,
.acc-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--c-primary-400);
  transform: translateY(-50%);
  transition: transform .25s ease;
}
.acc-icon::after { transform: translateY(-50%) rotate(90deg); }
.acc-trigger[aria-expanded="true"] .acc-icon::after { transform: translateY(-50%) rotate(0deg); }

.acc-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.acc-item.is-open .acc-panel { max-height: 420px; }
.acc-body {
  padding: 0 20px 18px;
  font-size: 14.5px;
  color: var(--c-body);
}

/* ---------- CTA ---------- */
.cta {
  padding: clamp(36px, 5vw, 60px) 0;
  background: linear-gradient(120deg, var(--c-primary) 0%, var(--c-primary-600) 55%, #1c58b5 100%);
  color: #fff;
}
.cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.cta-title { color: #fff; font-size: clamp(21px, 2.8vw, 28px); }
.cta-desc { margin-top: 8px; color: rgba(255, 255, 255, .82); font-size: 15px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- 页脚 ---------- */
.site-footer {
  padding: clamp(40px, 5vw, 64px) 0 24px;
  background: #081c3d;
  color: rgba(255, 255, 255, .7);
  font-size: 14px;
}
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr);
  gap: clamp(28px, 4vw, 56px);
}
.site-footer .brand-text strong { color: #fff; }
.footer-slogan { margin-top: 14px; max-width: 30ch; }

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
}
.footer-col h3 {
  margin-bottom: 12px;
  color: #fff;
  font-size: 15px;
}
.footer-col ul { display: grid; gap: 8px; }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  color: rgba(255, 255, 255, .55);
  font-size: 13px;
}
.footer-note { color: rgba(255, 255, 255, .42); }

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 90;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--c-line);
  border-radius: 50%;
  background: #fff;
  color: var(--c-primary);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}
.to-top svg { width: 20px; height: 20px; }
.to-top.is-show { opacity: 1; visibility: visible; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-copy { max-width: 720px; }
  .verify-card { max-width: 620px; }
  .advantage-inner,
  .faq-inner,
  .footer-inner { grid-template-columns: 1fr; }
  .section-head-left { text-align: center; }
  .section-head-left .eyebrow { margin-inline: auto; }
}

@media (max-width: 860px) {
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px var(--gutter) 20px;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow);
    display: none;
  }
  .nav.is-open { display: flex; animation: fadeUp .2s ease both; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-link {
    display: block;
    padding: 12px 4px;
    border-bottom: 1px solid var(--c-line);
  }
  .nav-link::after { display: none; }
  .nav-cta { margin-top: 12px; }
  .nav-toggle { display: flex; }
  .site-header { position: sticky; }
}

@media (max-width: 600px) {
  :root { --gutter: 16px; --header-h: 60px; }
  body { font-size: 15.5px; }
  .brand-text em { display: none; }
  .hero-badges { gap: 8px 16px; font-size: 13.5px; }
  .hero-actions .btn { flex: 1 1 46%; }
  .stats { grid-template-columns: 1fr; gap: 10px; }
  .stat { display: flex; align-items: baseline; gap: 10px; }
  .stat-num { font-size: 20px; }
  .advantage-grid { grid-template-columns: 1fr; }
  .step:not(:last-child)::after { display: none; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1 1 100%; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}