/* ============================================================
   星联随身WiFi · 聚合导航站前台样式（电脑 + 手机自适应）
   配色集中在下面两组主题变量里，改主题只需加一个 body[data-theme]
   ============================================================ */

/* ===== 主题变量 ===== */
body[data-theme="sl-blue"] {
  --c-primary: #1677ff;
  --c-primary-dark: #0958d9;
  --c-primary-light: #cfe3ff;
  --c-primary-soft: #f2f7ff;
  --c-grad-a: #1677ff;
  --c-grad-b: #69b1ff;
  --c-accent: #fa8c16;
  --c-accent-dark: #d48806;
  --c-accent-soft: #fff7e6;
  --c-danger: #ff4d4f;
  --c-header-bg: #ffffff;
}

body[data-theme="sl-violet"] {
  --c-primary: #1d39c4;
  --c-primary-dark: #10239e;
  --c-primary-light: #d6dbf4;
  --c-primary-soft: #eff1fb;
  --c-grad-a: #2f54eb;
  --c-grad-b: #85a5ff;
  --c-accent: #fa8c16;
  --c-accent-dark: #d48806;
  --c-accent-soft: #fff7e6;
  --c-danger: #ff4d4f;
  --c-header-bg: #ffffff;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  background: #f5f7fa;
}

a { color: var(--c-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--c-primary-dark); }
img { max-width: 100%; vertical-align: middle; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; border-radius: 4px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* ===== 顶部导航 ===== */
.site-header {
  background: var(--c-header-bg, #fff);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .06);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 62px;
}
.logo a { display: flex; align-items: center; gap: 9px; }
.logo-mark { display: inline-flex; line-height: 0; }
.logo-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--c-primary);
  letter-spacing: .3px;
  white-space: nowrap;
}

.site-nav ul { display: flex; align-items: center; gap: 4px; }
.site-nav li a {
  display: block;
  padding: 8px 15px;
  border-radius: 8px;
  font-size: 15px;
  color: #444;
  font-weight: 500;
  transition: background .2s, color .2s;
}
.site-nav li a:hover { background: var(--c-primary-soft); color: var(--c-primary); }
.site-nav li.active a { background: var(--c-primary); color: #fff; }

.header-cta { display: flex; align-items: center; }

.nav-toggle {
  display: none;
  width: 40px; height: 36px;
  border: 0; background: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block; width: 21px; height: 2px;
  background: #333; border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 22px;
  border-radius: 9px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background .2s, color .2s, border-color .2s, transform .12s, box-shadow .2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-block { display: flex; width: 100%; }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); color: #fff; box-shadow: 0 6px 16px rgba(22, 119, 255, .26); }
.btn-outline { background: #fff; border-color: var(--c-primary); color: var(--c-primary); }
.btn-outline:hover { background: var(--c-primary-soft); color: var(--c-primary-dark); }
.btn-accent { background: var(--c-accent); color: #fff; }
.btn-accent:hover { background: var(--c-accent-dark); color: #fff; box-shadow: 0 6px 16px rgba(250, 140, 22, .3); }
.btn-white { background: #fff; color: var(--c-primary); box-shadow: 0 4px 14px rgba(0, 0, 0, .14); }
.btn-white:hover { background: #fff; color: var(--c-primary-dark); }
.btn-ghost { background: rgba(255, 255, 255, .16); color: #fff; border-color: rgba(255, 255, 255, .55); }
.btn-ghost:hover { background: rgba(255, 255, 255, .26); color: #fff; }

/* ===== 主区域 ===== */
.main { padding-top: 20px; padding-bottom: 40px; }

.section { margin-top: 26px; }

.section-head { margin-bottom: 14px; }
.section-head.row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.section-title {
  font-size: 21px;
  font-weight: 800;
  color: #1f1f1f;
  line-height: 1.35;
  padding-left: 13px;
  position: relative;
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 4px; height: 19px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--c-grad-a), var(--c-grad-b));
}
.section-sub {
  margin-top: 6px;
  font-size: 14px;
  color: #888;
  padding-left: 13px;
}
.more-link { font-size: 14px; color: #888; }
.more-link:hover { color: var(--c-primary); }

/* ===== Banner 轮播 ===== */
.banner {
  position: relative;
  margin-top: 20px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(16, 47, 100, .12);
  background: #0b2c66;
}
.banner-track { display: flex; transition: transform .55s cubic-bezier(.4, 0, .2, 1); }
.banner-slide {
  flex: 0 0 100%;
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  padding: 40px 48px;
  overflow: hidden;
}

.banner-art { position: absolute; inset: 0; z-index: 0; }
.banner-art::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(100deg, transparent 30%, #000 100%);
  -webkit-mask-image: linear-gradient(100deg, transparent 30%, #000 100%);
}
.art-1 { background: linear-gradient(118deg, #0d3fae 0%, var(--c-grad-a) 46%, var(--c-grad-b) 100%); }
.art-2 { background: linear-gradient(118deg, #06265e 0%, #0f5bd6 52%, #00a6c9 100%); }
.art-3 { background: linear-gradient(118deg, #8f3d00 0%, #f07800 48%, #ffbb4d 100%); }

.art-blob { position: absolute; border-radius: 50%; filter: blur(2px); opacity: .3; }
.art-blob.b1 {
  width: 300px; height: 300px; right: -70px; top: -100px;
  background: radial-gradient(circle at 32% 32%, rgba(255, 255, 255, .95), rgba(255, 255, 255, 0) 68%);
}
.art-blob.b2 {
  width: 210px; height: 210px; right: 150px; bottom: -110px;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, .7), rgba(255, 255, 255, 0) 70%);
}
.art-ring {
  position: absolute;
  right: 90px; top: 50%;
  width: 250px; height: 250px;
  margin-top: -125px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, .3);
  box-shadow: 0 0 0 34px rgba(255, 255, 255, .07), 0 0 0 74px rgba(255, 255, 255, .05);
}

.banner-caption { position: relative; z-index: 2; max-width: 640px; color: #fff; }
.banner-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .6px;
  padding: 5px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .2);
  border: 1px solid rgba(255, 255, 255, .34);
  margin-bottom: 14px;
}
.banner-title {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: .4px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, .18);
}
.banner-desc {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .9);
  max-width: 560px;
}
.banner-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }

.banner-arrow {
  position: absolute;
  top: 50%; margin-top: -20px;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .4);
  background: rgba(0, 0, 0, .16);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: opacity .25s, background .25s;
  z-index: 3;
}
.banner:hover .banner-arrow { opacity: 1; }
.banner-arrow:hover { background: rgba(0, 0, 0, .34); }
.banner-arrow.prev { left: 14px; }
.banner-arrow.next { right: 14px; }

.banner-dots {
  position: absolute;
  left: 48px; bottom: 20px;
  display: flex; gap: 8px;
  z-index: 3;
}
.banner-dots button {
  width: 9px; height: 9px;
  border-radius: 999px;
  border: 0;
  background: rgba(255, 255, 255, .45);
  transition: width .3s, background .3s;
}
.banner-dots button.active { width: 26px; background: #fff; }

/* ===== 卡片 ===== */
.card-grid { display: grid; gap: 18px; }
.card-dual { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 2px 10px rgba(16, 47, 100, .05);
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(16, 47, 100, .11);
  border-color: var(--c-primary-light);
}

.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.card-logo {
  width: 44px; height: 44px;
  flex: 0 0 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--c-grad-a), var(--c-grad-b));
}
.logo-card { background: linear-gradient(135deg, #0f5bd6, #00a6c9); }
.card-name { font-size: 17px; font-weight: 700; color: #1f1f1f; }
.card-tag { font-size: 12.5px; color: #9aa4b2; margin-top: 1px; }

.recommend-badge {
  margin-left: auto;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-danger);
  background: #fff1f0;
  border: 1px solid #ffccc7;
  padding: 3px 9px;
  border-radius: 6px;
  white-space: nowrap;
}
.recommend-badge.gray { color: var(--c-accent-dark); background: var(--c-accent-soft); border-color: #ffe7ba; }

.card-intro { font-size: 14px; line-height: 1.78; color: #5c6675; }

.card-points { margin-top: 12px; display: grid; gap: 7px; }
.card-points li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  color: #6b7686;
}
.card-points li::before {
  content: "";
  position: absolute;
  left: 4px; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-primary);
  opacity: .55;
}

.card-recommend {
  margin-top: 15px;
  padding: 11px 14px;
  border: 1px dashed var(--c-primary-light);
  border-radius: 10px;
  background: var(--c-primary-soft);
  color: var(--c-primary-dark);
  font-size: 13.5px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.card-recommend b {
  font-size: 17px;
  letter-spacing: 1.2px;
  font-weight: 800;
  color: var(--c-primary);
}
.copy-btn {
  margin-left: auto;
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 6px;
  border: 1px solid var(--c-primary);
  background: #fff;
  color: var(--c-primary);
  transition: background .2s, color .2s;
}
.copy-btn:hover { background: var(--c-primary); color: #fff; }

.card-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 14px;
}
.card-action-btn {
  text-align: center;
  padding: 9px 4px;
  font-size: 13.5px;
  font-weight: 500;
  border-radius: 9px;
  border: 1px solid var(--c-primary-light);
  background: var(--c-primary-soft);
  color: var(--c-primary);
  transition: background .2s, color .2s, border-color .2s;
}
.card-action-btn:hover {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}
.card-foot { margin-top: 14px; }

/* ===== 新手推广指南 ===== */
.guide-section {
  background: linear-gradient(180deg, #ffffff, var(--c-primary-soft));
  border: 1px solid #e8effa;
  border-radius: 16px;
  padding: 22px 22px 20px;
}
.guide-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.guide-sub { font-size: 14px; color: #888; padding-left: 13px; margin-top: 6px; }

.guide-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.guide-step {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 13px;
  padding: 18px 16px;
  transition: transform .22s, box-shadow .22s;
}
.guide-step:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(16, 47, 100, .1); }
.guide-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .5px;
  margin-bottom: 12px;
}
.gi-1 { background: linear-gradient(135deg, #1677ff, #69b1ff); }
.gi-2 { background: linear-gradient(135deg, #0f5bd6, #00a6c9); }
.gi-3 { background: linear-gradient(135deg, #fa8c16, #ffbb4d); }
.gi-4 { background: linear-gradient(135deg, #12a150, #52c41a); }
.guide-body h3 { font-size: 15.5px; font-weight: 700; color: #1f1f1f; }
.guide-body p { margin-top: 6px; font-size: 13.5px; line-height: 1.72; color: #6b7686; }

.guide-tip {
  margin-top: 16px;
  padding: 12px 15px;
  border-radius: 10px;
  background: var(--c-accent-soft);
  border: 1px solid #ffe7ba;
  font-size: 13.5px;
  color: #8a5a00;
  line-height: 1.75;
}

/* ===== 最新资讯 ===== */
.news-list {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(16, 47, 100, .05);
}
.news-item {
  display: flex;
  gap: 15px;
  padding: 17px 20px;
  border-bottom: 1px solid #f2f5f9;
  align-items: flex-start;
  color: inherit;
  transition: background .2s;
}
.news-item:last-child { border-bottom: 0; }
.news-item:hover { background: #fafcff; }
.news-thumb {
  flex: 0 0 62px;
  width: 62px; height: 62px;
  border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
}
.thumb-1 { background: linear-gradient(135deg, #1677ff, #69b1ff); }
.thumb-2 { background: linear-gradient(135deg, #0f5bd6, #00a6c9); }
.thumb-3 { background: linear-gradient(135deg, #f07800, #ffbb4d); }
.news-main { display: block; min-width: 0; }
.news-title { display: block; font-size: 16px; font-weight: 700; color: #1f1f1f; }
.news-item:hover .news-title { color: var(--c-primary); }
.news-excerpt {
  display: block;
  margin-top: 5px;
  font-size: 13.5px;
  color: #77818f;
  line-height: 1.7;
}
.news-meta { display: block; margin-top: 7px; font-size: 12.5px; color: #a3adba; }

/* ===== 全国办理城市 ===== */
.city-enter {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 2px 10px rgba(16, 47, 100, .05);
}
.city-enter-hot {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  flex-wrap: wrap;
  padding-bottom: 15px;
  border-bottom: 1px dashed #e6ecf5;
}
.hot-label {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--c-accent-dark);
  background: var(--c-accent-soft);
  border: 1px solid #ffe7ba;
  border-radius: 7px;
  padding: 4px 11px;
  white-space: nowrap;
}
.hot-links { display: flex; flex-wrap: wrap; gap: 8px 6px; }
.hot-links a {
  font-size: 13.5px;
  color: #5c6675;
  padding: 4px 12px;
  border-radius: 999px;
  background: #f5f7fa;
  transition: background .2s, color .2s;
}
.hot-links a:hover { background: var(--c-primary-soft); color: var(--c-primary); }

.city-enter-list { padding: 6px 0 0; }
.city-enter-row {
  display: flex;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid #f4f7fb;
  align-items: flex-start;
}
.city-enter-row:last-child { border-bottom: 0; }
.prov {
  flex: 0 0 76px;
  font-size: 13.5px;
  font-weight: 700;
  color: #3b4553;
  padding-top: 3px;
}
.city-links { display: flex; flex-wrap: wrap; gap: 6px; }
.city-links a {
  font-size: 13.5px;
  color: #6b7686;
  padding: 2px 9px;
  border-radius: 6px;
  transition: background .2s, color .2s;
}
.city-links a:hover { background: var(--c-primary-soft); color: var(--c-primary); }

.city-enter-foot {
  margin-top: 16px;
  padding-top: 15px;
  border-top: 1px dashed #e6ecf5;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: #77818f;
}
.city-enter-foot b { color: var(--c-primary); font-size: 15px; }

/* ===== FAQ ===== */
.faq-list { display: grid; gap: 10px; }
.faq-item {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 13px;
  overflow: hidden;
  transition: border-color .2s, box-shadow .2s;
}
.faq-item[open] { border-color: var(--c-primary-light); box-shadow: 0 6px 18px rgba(16, 47, 100, .07); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 46px 16px 20px;
  font-size: 15.5px;
  font-weight: 600;
  color: #242c37;
  position: relative;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--c-primary); }
.faq-caret {
  position: absolute;
  right: 20px; top: 50%;
  width: 9px; height: 9px;
  margin-top: -5px;
  border-right: 2px solid #9aa4b2;
  border-bottom: 2px solid #9aa4b2;
  transform: rotate(45deg);
  transition: transform .25s, border-color .25s;
}
.faq-item[open] .faq-caret { transform: rotate(-135deg); border-color: var(--c-primary); }
.faq-body {
  padding: 0 20px 18px;
  font-size: 14px;
  line-height: 1.82;
  color: #5c6675;
  border-top: 1px solid #f4f7fb;
  padding-top: 14px;
  margin: 0 0 0;
  animation: fadeUp .3s ease;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: none; } }

.compliance-note {
  margin-top: 18px;
  padding: 15px 18px;
  border-radius: 12px;
  background: #fff8f8;
  border: 1px solid #ffdcdc;
  font-size: 13.5px;
  line-height: 1.82;
  color: #8a4545;
}
.compliance-note strong { color: var(--c-danger); }

/* ===== 页脚 ===== */
.site-footer {
  background: #232a35;
  color: #9fb0c6;
  margin-top: 34px;
  padding: 34px 0 22px;
  font-size: 13.5px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1.15fr 1.35fr;
  gap: 26px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
}
.footer-logo { display: flex; align-items: center; gap: 9px; margin-bottom: 11px; }
.footer-logo-text { font-size: 17px; font-weight: 800; color: #fff; letter-spacing: .3px; }
.footer-slogan { color: #9fb0c6; line-height: 1.8; }

.footer-block-title {
  font-size: 14.5px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
  padding-left: 11px;
}
.footer-block-title::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 14px;
  border-radius: 2px;
  background: var(--c-grad-b);
}

.footer-contact-items { display: grid; gap: 12px; }
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #c3ccd9;
}
.footer-contact-item:hover { color: #fff; }
.fc-icon {
  flex: 0 0 32px;
  width: 32px; height: 32px;
  border-radius: 9px;
  background: rgba(255, 255, 255, .08);
  display: flex; align-items: center; justify-content: center;
}
.footer-contact-item em { display: block; font-style: normal; font-size: 12px; color: #7d8b9e; }
.footer-contact-item b { display: block; font-size: 14.5px; color: #fff; letter-spacing: .3px; }

.footer-visit-links { display: grid; gap: 9px; }
.footer-visit-links a {
  color: #c3ccd9;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.footer-visit-links a:hover { color: #fff; }
.fv-host { font-size: 12px; color: #6f7d90; }
.footer-visit-links.city-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 8px;
}
.footer-visit-links.city-quick a {
  justify-content: flex-start;
  background: rgba(255, 255, 255, .06);
  border-radius: 6px;
  padding: 3px 9px;
  font-size: 13px;
  color: #b8c4d4;
}
.footer-visit-links.city-quick a:hover { background: rgba(255, 255, 255, .14); color: #fff; }

.footer-copyright { padding-top: 18px; text-align: center; color: #7d8b9e; line-height: 1.9; }
.footer-legal a { color: #9fb0c6; }
.footer-legal a:hover { color: #fff; }
.footer-legal .dot { margin: 0 7px; color: #4a5568; }

/* ===== 移动端底部导航 ===== */
.mobile-tabbar { display: none; }

/* ===== 返回顶部 / 提示 ===== */
.to-top {
  position: fixed;
  right: 22px; bottom: 30px;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid #e6ecf5;
  background: #fff;
  color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 22px rgba(16, 47, 100, .16);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .25s, transform .25s, visibility .25s;
  z-index: 90;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--c-primary); color: #fff; }

.toast {
  position: fixed;
  left: 50%; bottom: 42px;
  transform: translate(-50%, 14px);
  background: rgba(28, 36, 48, .94);
  color: #fff;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 999px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s, transform .25s, visibility .25s;
  z-index: 200;
  pointer-events: none;
}
.toast.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

/* ===== 滚动入场 ===== */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.in { opacity: 1; transform: none; transition: opacity .55s ease, transform .55s ease; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  .banner-track { transition: none; }
  .banner-arrow { opacity: 1; }
}

/* ============================================================
   响应式
   ============================================================ */

/* 平板 */
@media (max-width: 992px) {
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .guide-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .banner-slide { min-height: 280px; padding: 32px 30px; }
  .banner-title { font-size: 25px; }
  .art-ring { right: -40px; }
}

/* 手机 */
@media (max-width: 768px) {
  body { padding-bottom: 62px; }
  html { scroll-padding-top: 68px; }

  .header-inner { height: 56px; }
  .logo-text { font-size: 17px; }
  .header-cta { display: none; }
  .nav-toggle { display: flex; }

  .site-nav {
    position: absolute;
    left: 0; right: 0; top: 100%;
    background: #fff;
    box-shadow: 0 12px 24px rgba(16, 47, 100, .12);
    border-top: 1px solid #f0f4f9;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .site-nav.open { max-height: 320px; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 8px 14px 14px; }
  .site-nav li a {
    padding: 13px 12px;
    border-radius: 9px;
    border-bottom: 1px solid #f4f7fb;
    font-size: 15px;
  }
  .site-nav li:last-child a { border-bottom: 0; }
  .site-nav li.active a { background: var(--c-primary-soft); color: var(--c-primary); }

  .main { padding-top: 14px; padding-bottom: 24px; }
  .section { margin-top: 20px; }
  .section-title { font-size: 18.5px; }
  .section-sub { font-size: 13px; }

  .banner { border-radius: 13px; margin-top: 0; }
  .banner-slide { min-height: 268px; padding: 24px 20px 44px; }
  .banner-eyebrow { font-size: 12px; padding: 4px 11px; margin-bottom: 10px; }
  .banner-title { font-size: 21px; }
  .banner-desc { font-size: 13.5px; margin-top: 9px; }
  .banner-actions { margin-top: 16px; gap: 9px; }
  .banner-actions .btn { padding: 9px 16px; font-size: 13.5px; }
  .banner-arrow { display: none; }
  .banner-dots { left: 20px; bottom: 16px; }
  .art-ring { width: 180px; height: 180px; margin-top: -90px; right: -60px; box-shadow: 0 0 0 22px rgba(255,255,255,.07), 0 0 0 52px rgba(255,255,255,.05); }

  .card-dual { grid-template-columns: 1fr; }
  .card { padding: 17px; border-radius: 13px; }
  .card-actions { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
  .card-action-btn { font-size: 12.5px; padding: 8px 2px; }

  .guide-section { padding: 17px; border-radius: 14px; }
  .guide-head { margin-bottom: 15px; }
  .guide-steps { grid-template-columns: 1fr; gap: 10px; }
  .guide-step { padding: 15px; }
  .guide-icon { width: 37px; height: 37px; font-size: 13.5px; margin-bottom: 9px; }

  .news-item { padding: 14px 15px; gap: 12px; }
  .news-thumb { flex: 0 0 52px; width: 52px; height: 52px; border-radius: 10px; }
  .news-title { font-size: 15px; }
  .news-excerpt { font-size: 13px; }

  .city-enter { padding: 17px; border-radius: 14px; }
  .city-enter-row { flex-direction: column; gap: 7px; }
  .prov { flex: none; padding-top: 0; }
  .city-enter-foot { font-size: 13px; }
  .city-enter-foot .btn { flex: 1 1 auto; }

  .faq-item summary { padding: 14px 42px 14px 16px; font-size: 14.5px; }
  .faq-body { padding: 13px 16px 16px; font-size: 13.5px; }

  .footer-top { grid-template-columns: 1fr; gap: 20px; padding-bottom: 20px; }
  .site-footer { padding: 26px 0 18px; }

  .mobile-tabbar {
    display: flex;
    position: fixed;
    left: 0; right: 0; bottom: 0;
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid #eaeff6;
    box-shadow: 0 -3px 14px rgba(16, 47, 100, .07);
    z-index: 95;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .mobile-tabbar a {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 7px 0 6px;
    font-size: 11.5px;
    color: #8a95a4;
  }
  .mobile-tabbar a.active { color: var(--c-primary); }

  .to-top { right: 14px; bottom: 76px; width: 40px; height: 40px; }
  .toast { bottom: 82px; font-size: 13.5px; }
}

@media (max-width: 360px) {
  .banner-title { font-size: 19px; }
  .banner-actions .btn { flex: 1 1 100%; }
  .card-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ============================================================
   多页面新增组件
   ============================================================ */

/* ===== 面包屑 ===== */
.crumbs { margin: 16px 0 0; }
.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  color: #77818f;
  list-style: none;
}
.crumbs li { display: flex; align-items: center; gap: 6px; }
.crumbs li + li::before { content: "/"; color: #c3ccd9; }
.crumbs a { color: #77818f; }
.crumbs a:hover { color: var(--c-primary); }
.crumbs [aria-current] { color: #3b4553; font-weight: 500; }

/* ===== 页面标题区 ===== */
.page-hero {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 16px;
  padding: 26px 24px;
  box-shadow: 0 2px 10px rgba(16, 47, 100, .05);
}
.page-h1 {
  font-size: 25px;
  font-weight: 800;
  line-height: 1.4;
  color: #1f1f1f;
  letter-spacing: .2px;
}
.page-lead {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: #5c6675;
  max-width: 900px;
}
.article-meta { margin-top: 10px; font-size: 13.5px; color: #9aa4b2; }

.city-hero { background: linear-gradient(160deg, #fff 0%, var(--c-primary-soft) 100%); }
.city-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 999px;
  background: #f2f5f9;
  color: #6b7686;
  border: 1px solid #e6ecf5;
}
.tag-ok { background: #f0fbf4; color: #12a150; border-color: #cbf0d8; }
.tag-warn { background: var(--c-accent-soft); color: var(--c-accent-dark); border-color: #ffe7ba; }

/* ===== 数据条 ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
  max-width: 720px;
}
.stat {
  background: rgba(255, 255, 255, .8);
  border: 1px solid #e6ecf5;
  border-radius: 12px;
  padding: 13px 10px;
  text-align: center;
}
.stat b {
  display: block;
  font-size: 21px;
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1.25;
}
.stat span { display: block; margin-top: 3px; font-size: 12.5px; color: #8a95a4; }

/* ===== 正文排版 ===== */
.prose { display: grid; gap: 16px; }
.prose-block {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 14px;
  padding: 22px 24px;
  box-shadow: 0 2px 10px rgba(16, 47, 100, .04);
}
.prose-h {
  font-size: 18px;
  font-weight: 700;
  color: #1f1f1f;
  padding-left: 12px;
  position: relative;
  margin-bottom: 12px;
}
.prose-h::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 4px; height: 17px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--c-grad-a), var(--c-grad-b));
}
.prose-body { font-size: 15px; line-height: 1.9; color: #4a5563; }
.prose-body p + p { margin-top: 11px; }
.prose-body .rich-h {
  font-size: 15.5px;
  font-weight: 700;
  color: #242c37;
  margin: 16px 0 8px;
}
.prose-body .rich-h:first-child { margin-top: 0; }
.rich-ul { margin: 10px 0 0; display: grid; gap: 8px; }
.rich-ul li {
  position: relative;
  padding-left: 20px;
  list-style: none;
  font-size: 14.5px;
  line-height: 1.8;
  color: #4a5563;
}
.rich-ul li::before {
  content: "";
  position: absolute;
  left: 3px; top: 10px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-primary);
  opacity: .5;
}
.rich-ul li b { color: #1f1f1f; }

/* ===== 城市索引：搜索 ===== */
.city-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border: 1px solid #e6ecf5;
  border-radius: 12px;
  padding: 11px 16px;
  color: #9aa4b2;
  box-shadow: 0 2px 10px rgba(16, 47, 100, .04);
}
.city-search input {
  flex: 1;
  border: 0;
  outline: 0;
  font-size: 15px;
  font-family: inherit;
  color: #333;
  background: transparent;
  min-width: 0;
}
.city-search-count { font-size: 13px; color: #9aa4b2; white-space: nowrap; }
.city-search-empty {
  margin-top: 18px;
  padding: 20px;
  text-align: center;
  background: #fff;
  border: 1px dashed #e6ecf5;
  border-radius: 12px;
  color: #8a95a4;
  font-size: 14px;
}

/* ===== 城市索引：省份折叠块 ===== */
.prov-block {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 13px;
  margin-bottom: 10px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(16, 47, 100, .04);
}
.prov-block[open] { border-color: var(--c-primary-light); }
.prov-block > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 20px;
  font-size: 15.5px;
  font-weight: 700;
  color: #242c37;
  user-select: none;
  transition: background .2s;
}
.prov-block > summary::-webkit-details-marker { display: none; }
.prov-block > summary:hover { background: #fafcff; }
.prov-name { flex: 1; }
.prov-count { font-size: 12.5px; font-weight: 400; color: #9aa4b2; }
.prov-caret {
  width: 9px; height: 9px;
  border-right: 2px solid #9aa4b2;
  border-bottom: 2px solid #9aa4b2;
  transform: rotate(45deg);
  transition: transform .25s, border-color .25s;
  flex: 0 0 auto;
}
.prov-block[open] .prov-caret { transform: rotate(-135deg); border-color: var(--c-primary); }
.prov-body { padding: 4px 20px 18px; border-top: 1px solid #f4f7fb; }
.prov-link { padding: 12px 0 4px; }
.prov-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 9px 0;
  border-top: 1px solid #f7f9fc;
}
.prov-row:first-of-type { border-top: 0; }

/* ===== 标签芯片 ===== */
.chip {
  display: inline-block;
  font-size: 13.5px;
  padding: 4px 12px;
  border-radius: 8px;
  background: #f5f7fa;
  color: #5c6675;
  border: 1px solid transparent;
  transition: background .18s, color .18s, border-color .18s;
  white-space: nowrap;
}
.chip:hover { background: var(--c-primary-soft); color: var(--c-primary); border-color: var(--c-primary-light); }
.chip-main { background: var(--c-primary-soft); color: var(--c-primary); font-weight: 600; border-color: var(--c-primary-light); }
.chip-city {
  flex: 0 0 auto;
  font-weight: 600;
  color: #3b4553;
  background: #eef3fa;
  min-width: 68px;
  text-align: center;
}
.chip-list { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; min-width: 0; }
.chip-area { font-size: 13px; padding: 3px 10px; }
.chip-card {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 18px;
  border-radius: 14px;
}

/* ===== 联系方式卡片 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 16px;
}
.contact-item {
  display: block;
  background: var(--c-primary-soft);
  border: 1px solid var(--c-primary-light);
  border-radius: 12px;
  padding: 16px 18px;
  color: inherit;
}
.contact-item:hover { color: inherit; border-color: var(--c-primary); }
.contact-label { display: block; font-size: 13px; color: #77818f; }
.contact-value {
  display: block;
  margin-top: 5px;
  font-size: 20px;
  font-weight: 800;
  color: var(--c-primary);
  letter-spacing: .5px;
}
.contact-qr { margin-top: 10px; width: 140px; border-radius: 10px; }
.contact-note { margin-top: 14px; font-size: 13.5px; color: #8a95a4; line-height: 1.8; }

.quick-links, .quick-links-card { display: flex; flex-wrap: wrap; gap: 10px; }
.quick-links-card { padding: 18px; border-radius: 14px; }

/* ===== 空状态 / 禁用态 ===== */
.empty-state { text-align: center; padding: 46px 24px; border-radius: 14px; }
.empty-title { font-size: 42px; font-weight: 800; color: var(--c-primary); }
.empty-desc { margin: 10px 0 20px; color: #8a95a4; }
.btn-disabled {
  background: #eef1f5;
  color: #9aa4b2;
  cursor: not-allowed;
  box-shadow: none;
  border-color: #e6ecf5;
}
.btn-disabled:hover { background: #eef1f5; color: #9aa4b2; }
.logo-img { height: 36px; width: auto; max-height: 36px; }

/* ===== 新组件响应式 ===== */
@media (max-width: 1100px) {
  .header-cta { display: none; }
}

@media (max-width: 768px) {
  .crumbs { margin-top: 12px; font-size: 13px; }
  .page-hero { padding: 20px 17px; border-radius: 14px; }
  .page-h1 { font-size: 20px; }
  .page-lead { font-size: 14px; margin-top: 8px; }
  .stats-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 16px; }
  .stat b { font-size: 18px; }
  .prose-block { padding: 17px 16px; border-radius: 13px; }
  .prose-h { font-size: 16px; }
  .prose-body { font-size: 14.5px; }
  .prov-block > summary { padding: 13px 15px; font-size: 15px; }
  .prov-body { padding: 2px 15px 15px; }
  .prov-row { flex-direction: column; gap: 8px; }
  .chip-city { min-width: 0; }
  .chip-card { padding: 15px; }
  .contact-value { font-size: 18px; }
  .city-search { padding: 10px 14px; }
  .city-search-count { display: none; }
}