/* =========================================
   铭赞网络·城市站样式
   city.css - 6 主题 + 响应式
   -----------------------------------------
   主题:t1 默认深蓝 / t2 江南青绿 / t3 西北赭石
        t4 东北工业 / t5 西南多彩 / t6 都市电光
   ========================================= */

:root {
  --c-text: #1A1A1A;
  --c-text-2: #4A4A4A;
  --c-text-3: #6E7480;
  --c-text-inv: #FFFFFF;
  --c-line: #E5E7EB;
  --c-line-2: #D9DDE3;
  --c-bg: #FFFFFF;
  --c-bg-alt: #F5F6F8;
  --c-bg-card: #FFFFFF;

  --ff-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --ff-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ============== 6 套主题变量 ============== */
.theme-t1 {
  --c-primary: #0A1A3A;
  --c-primary-2: #16295A;
  --c-accent: #C9A35A;
  --c-accent-2: #B5894A;
  --c-accent-soft: #E8D2A0;
  --c-red: #C8102E;
  --grad-1: linear-gradient(135deg, #0A1A3A 0%, #16295A 100%);
  --grad-2: linear-gradient(135deg, #C9A35A 0%, #B5894A 100%);
}
.theme-t2 {
  --c-primary: #1F5F4F;
  --c-primary-2: #2C7F6B;
  --c-accent: #D4A574;
  --c-accent-2: #B5894A;
  --c-accent-soft: #E8D2A0;
  --c-red: #B33A3A;
  --grad-1: linear-gradient(135deg, #1F5F4F 0%, #2C7F6B 100%);
  --grad-2: linear-gradient(135deg, #D4A574 0%, #B5894A 100%);
}
.theme-t3 {
  --c-primary: #6B3410;
  --c-primary-2: #8C4A1C;
  --c-accent: #C9A35A;
  --c-accent-2: #A07B2A;
  --c-accent-soft: #E8C97A;
  --c-red: #A52A2A;
  --grad-1: linear-gradient(135deg, #6B3410 0%, #8C4A1C 100%);
  --grad-2: linear-gradient(135deg, #C9A35A 0%, #A07B2A 100%);
}
.theme-t4 {
  --c-primary: #1A1A1A;
  --c-primary-2: #2D2D2D;
  --c-accent: #C8102E;
  --c-accent-2: #A00C24;
  --c-accent-soft: #E0BFBF;
  --c-red: #C8102E;
  --grad-1: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
  --grad-2: linear-gradient(135deg, #C8102E 0%, #A00C24 100%);
}
.theme-t5 {
  --c-primary: #1A2A5C;
  --c-primary-2: #2C3F7A;
  --c-accent: #D4A14C;
  --c-accent-2: #B07C2A;
  --c-accent-soft: #E8C97A;
  --c-red: #B33A3A;
  --grad-1: linear-gradient(135deg, #1A2A5C 0%, #2C3F7A 100%);
  --grad-2: linear-gradient(135deg, #D4A14C 0%, #B07C2A 100%);
}
.theme-t6 {
  --c-primary: #0E1116;
  --c-primary-2: #1C2128;
  --c-accent: #00A6FB;
  --c-accent-2: #0084D4;
  --c-accent-soft: #BCE0FD;
  --c-red: #FF4757;
  --grad-1: linear-gradient(135deg, #0E1116 0%, #1C2128 100%);
  --grad-2: linear-gradient(135deg, #00A6FB 0%, #0084D4 100%);
}

/* ============== 基础 ============== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--ff-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: var(--c-accent-2); }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4, h5 {
  font-family: var(--ff-serif);
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
  color: var(--c-primary);
}
p { margin: 0; }
ul { list-style: none; margin: 0; padding: 0; }

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============== 顶部条 ============== */
.topbar {
  background: var(--c-primary);
  color: var(--c-text-inv);
  font-size: 13px;
  padding: 8px 0;
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.topbar a { color: var(--c-text-inv); opacity: 0.9; }
.topbar a:hover { opacity: 1; color: var(--c-accent-soft); }
.topbar .sep { opacity: 0.4; margin: 0 8px; }

/* ============== 导航 ============== */
.site-header { background: var(--c-bg); }
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s var(--ease);
}
.nav-wrap.is-scrolled {
  border-bottom-color: var(--c-line);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--ff-serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--c-primary);
  white-space: nowrap;
}
.logo-tag { font-size: 14px; color: var(--c-text-2); font-weight: 500; }
.logo-divider { width: 1px; height: 18px; background: var(--c-line-2); }
.nav-list { display: flex; align-items: center; gap: 6px; }
.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--c-text);
  border-radius: var(--radius-sm);
  transition: all 0.2s var(--ease);
}
.nav-list a:hover {
  color: var(--c-accent-2);
  background: var(--c-bg-alt);
}
.nav-cta {
  background: var(--grad-1);
  color: var(--c-text-inv) !important;
  padding: 10px 20px !important;
  border-radius: var(--radius);
  margin-left: 8px;
}
.nav-cta:hover { background: var(--grad-2); color: var(--c-text-inv) !important; }

.nav-toggle { display: none; }
.nav-burger { display: none; }

/* ============== Hero ============== */
.hero {
  position: relative;
  background: var(--grad-1);
  color: var(--c-text-inv);
  overflow: hidden;
  padding: 80px 0 100px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-mesh {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(255, 255, 255, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
}
.hero-grain {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(45deg, transparent 48%, rgba(255, 255, 255, 0.04) 49%, rgba(255, 255, 255, 0.04) 51%, transparent 52%),
    linear-gradient(-45deg, transparent 48%, rgba(255, 255, 255, 0.04) 49%, rgba(255, 255, 255, 0.04) 51%, transparent 52%);
  background-size: 30px 30px;
  opacity: 0.4;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--c-accent-soft);
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero-title {
  color: var(--c-text-inv);
  font-size: 48px;
  line-height: 1.2;
  margin: 0 0 20px;
  font-weight: 800;
}
.hero-title-main { display: block; }
.hero-title-sub {
  display: block;
  font-size: 20px;
  color: var(--c-accent-soft);
  font-weight: 500;
  margin-top: 12px;
}
.hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 32px;
  max-width: 580px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s var(--ease);
  border: 0;
  cursor: pointer;
}
.btn-primary {
  background: var(--grad-2);
  color: var(--c-text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}
.btn-primary:hover { transform: translateY(-2px); color: var(--c-text); }
.btn-ghost {
  background: transparent;
  color: var(--c-text-inv);
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--c-accent-soft);
  color: var(--c-accent-soft);
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.hero-stats li {
  text-align: left;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}
.stat-num {
  display: block;
  font-family: var(--ff-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--c-accent-soft);
  line-height: 1;
}
.stat-label { display: block; font-size: 13px; color: rgba(255, 255, 255, 0.7); margin-top: 6px; }

.hero-visual { position: relative; height: 360px; }
.hero-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  padding: 20px;
  color: var(--c-text-inv);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}
.hero-card-1 { top: 0; right: 0; width: 220px; }
.hero-card-2 { top: 100px; right: 130px; width: 200px; }
.hero-card-3 { top: 200px; right: 30px; width: 220px; }
.hc-title { font-size: 14px; color: var(--c-accent-soft); margin-bottom: 12px; }
.hc-bar { height: 6px; background: rgba(255, 255, 255, 0.1); border-radius: 3px; overflow: hidden; margin-bottom: 8px; }
.hc-bar span { display: block; height: 100%; background: var(--grad-2); border-radius: 3px; }
.hc-meta { font-size: 13px; opacity: 0.85; }
.hero-orb {
  position: absolute;
  top: 30px;
  right: 200px;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, var(--c-accent-soft) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(20px);
  opacity: 0.6;
  animation: orb-pulse 4s ease-in-out infinite;
}
@keyframes orb-pulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.3); opacity: 0.9; }
}

/* ============== Section 通用 ============== */
.section { padding: 90px 0; position: relative; }
.section:nth-child(even) { background: var(--c-bg-alt); }
.section-head {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--c-accent-2);
  font-weight: 600;
  margin-bottom: 14px;
}
.section-title {
  font-size: 36px;
  color: var(--c-primary);
  margin: 0 0 18px;
  line-height: 1.25;
}
.section-desc { font-size: 16px; color: var(--c-text-2); line-height: 1.8; }

/* ============== Service 卡片 ============== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  background: var(--c-bg-card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--c-line);
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--grad-2);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  background: var(--grad-1);
  color: var(--c-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.service-icon svg { width: 36px; height: 36px; }
.service-title { font-size: 22px; margin: 0 0 14px; color: var(--c-primary); }
.service-desc { font-size: 14.5px; color: var(--c-text-2); line-height: 1.7; margin-bottom: 20px; }
.service-list { margin: 0 0 24px; }
.service-list li {
  position: relative;
  padding: 8px 0 8px 24px;
  font-size: 14px;
  color: var(--c-text-2);
  border-bottom: 1px dashed var(--c-line);
}
.service-list li:last-child { border-bottom: 0; }
.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--c-accent);
  border-radius: 50%;
}
.service-link {
  display: inline-block;
  color: var(--c-accent-2);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s var(--ease);
}
.service-link:hover { color: var(--c-primary); transform: translateX(4px); }

/* ============== 拓展业务 ============== */
.expanded-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.ex-card {
  display: block;
  background: var(--c-bg-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all 0.3s var(--ease);
}
.ex-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  color: inherit;
}
.ex-num {
  font-family: var(--ff-serif);
  font-size: 28px;
  color: var(--c-accent-2);
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1;
}
.ex-card h4 { font-size: 17px; margin: 0 0 8px; color: var(--c-primary); }
.ex-card p { font-size: 13.5px; color: var(--c-text-3); line-height: 1.6; margin: 0; }

/* ============== 地区特色板块 ============== */
.local-feature {
  background: var(--c-bg);
  border-radius: var(--radius-lg);
  padding: 60px 50px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 50px;
  align-items: center;
  border: 1px solid var(--c-line);
  margin: 60px auto;
  max-width: 1240px;
}
.lf-text h3 { font-size: 30px; margin: 0 0 16px; }
.lf-text p { font-size: 15px; color: var(--c-text-2); line-height: 1.8; margin-bottom: 20px; }
.lf-points { display: grid; gap: 10px; }
.lf-points li {
  padding-left: 24px;
  position: relative;
  font-size: 14.5px;
  color: var(--c-text-2);
  line-height: 1.6;
}
.lf-points li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--c-accent-2);
}
.lf-visual {
  position: relative;
  height: 360px;
  background: var(--grad-1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent-soft);
  font-family: var(--ff-serif);
  font-size: 60px;
  font-weight: 700;
  letter-spacing: 8px;
  text-align: center;
  line-height: 1.2;
}

/* ============== 优势数字 ============== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}
.adv-card {
  text-align: center;
  background: var(--c-bg-card);
  padding: 32px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  transition: all 0.3s var(--ease);
}
.adv-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.adv-num {
  font-family: var(--ff-serif);
  font-size: 44px;
  font-weight: 800;
  color: var(--c-accent-2);
  line-height: 1;
  margin-bottom: 12px;
}
.adv-card h4 { font-size: 16px; margin: 0 0 8px; color: var(--c-primary); }
.adv-card p { font-size: 13px; color: var(--c-text-3); line-height: 1.6; }

/* ============== 平台覆盖 ============== */
.platforms-group { display: grid; gap: 32px; }
.platforms-sub {
  font-family: var(--ff-serif);
  font-size: 20px;
  color: var(--c-primary);
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--c-accent);
  line-height: 1.4;
}
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.pf {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 22px 12px;
  background: var(--c-bg-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text);
  transition: all 0.3s var(--ease);
}
.pf:hover {
  border-color: var(--c-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.pf-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.pf-icon svg { width: 24px; height: 24px; display: block; }

@media (max-width: 960px) {
  .platforms-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
  .platforms-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============== 时间线 ============== */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}
.timeline li {
  background: var(--c-bg-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  transition: all 0.3s var(--ease);
  position: relative;
}
.timeline li:hover {
  border-color: var(--c-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.tl-year {
  font-family: var(--ff-serif);
  font-size: 32px;
  font-weight: 800;
  color: var(--c-accent-2);
  line-height: 1;
  margin-bottom: 12px;
}
.tl-body h5 { font-size: 17px; margin: 0 0 8px; color: var(--c-primary); }
.tl-body p { font-size: 13.5px; color: var(--c-text-2); line-height: 1.7; margin: 0; }

@media (max-width: 900px) {
  .timeline { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .timeline { grid-template-columns: 1fr; }
}

/* ============== 流程 ============== */
.process-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.proc {
  background: var(--c-bg-card);
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  position: relative;
  transition: all 0.3s var(--ease);
}
.proc:hover {
  border-color: var(--c-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.proc-num {
  font-family: var(--ff-serif);
  font-size: 36px;
  font-weight: 800;
  color: var(--c-accent-2);
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.4;
}
.proc h4 { font-size: 18px; margin: 0 0 10px; color: var(--c-primary); }
.proc p { font-size: 14px; color: var(--c-text-2); line-height: 1.7; }

/* ============== 行业 ============== */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.ind-card {
  background: var(--c-bg-card);
  padding: 28px 26px;
  border-radius: var(--radius);
  border-left: 4px solid var(--c-accent);
  transition: all 0.3s var(--ease);
}
.ind-card:hover { background: var(--c-bg-alt); transform: translateX(6px); }
.ind-card h4 { font-size: 18px; margin: 0 0 10px; color: var(--c-primary); }
.ind-card p { font-size: 14px; color: var(--c-text-2); line-height: 1.7; }

/* ============== FAQ ============== */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}
.faq-item {
  background: var(--c-bg-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.2s var(--ease);
}
.faq-item[open] { border-color: var(--c-accent); }
.faq-item summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--c-primary);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-q {
  font-family: var(--ff-serif);
  color: var(--c-accent-2);
  font-weight: 700;
  min-width: 32px;
}
.faq-toggle {
  margin-left: auto;
  width: 20px;
  height: 20px;
  position: relative;
  flex-shrink: 0;
}
.faq-toggle::before, .faq-toggle::after {
  content: '';
  position: absolute;
  background: var(--c-text-3);
  border-radius: 1px;
  transition: all 0.2s var(--ease);
}
.faq-toggle::before { top: 9px; left: 2px; width: 16px; height: 2px; }
.faq-toggle::after { top: 2px; left: 9px; width: 2px; height: 16px; }
.faq-item[open] .faq-toggle::after { transform: rotate(90deg); }
.faq-a {
  padding: 0 24px 20px 72px;
  font-size: 14.5px;
  color: var(--c-text-2);
  line-height: 1.8;
}

/* ============== 联系方式 ============== */
.contact-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
}
.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.ct-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px;
  background: var(--c-bg-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: all 0.3s var(--ease);
  color: inherit;
}
.ct-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: inherit;
}
.ct-icon {
  width: 48px;
  height: 48px;
  background: var(--grad-1);
  color: var(--c-accent-soft);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.ct-icon svg { width: 24px; height: 24px; }
.ct-label { font-size: 13px; color: var(--c-text-3); margin-bottom: 4px; }
.ct-value { font-size: 16px; font-weight: 600; color: var(--c-primary); }
.qr-card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  align-self: start;
}
.qr-img {
  width: 180px;
  height: 180px;
  margin: 0 auto 16px;
  background: var(--c-bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
}
.qr-img img { width: 100%; height: 100%; object-fit: contain; }
.qr-tip { font-size: 16px; font-weight: 700; color: var(--c-primary); margin-bottom: 8px; }
.qr-desc { font-size: 13px; color: var(--c-text-3); line-height: 1.6; }

/* ============== Footer ============== */
.site-footer {
  background: var(--c-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.6fr;
  gap: 50px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo { color: var(--c-text-inv); margin-bottom: 16px; }
.footer-brand .logo-tag { color: var(--c-accent-soft); }
.footer-intro { font-size: 14px; line-height: 1.8; margin-bottom: 14px; }
.footer-cert { font-size: 13px; color: rgba(255, 255, 255, 0.5); }
.footer-col h5 {
  color: var(--c-text-inv);
  font-size: 16px;
  margin: 0 0 20px;
  font-family: var(--ff-sans);
  font-weight: 600;
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { color: rgba(255, 255, 255, 0.7); font-size: 14px; transition: color 0.2s var(--ease); }
.footer-col a:hover { color: var(--c-accent-soft); }
.footer-links { grid-template-columns: 1fr 1fr 1fr !important; }
.footer-bottom {
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}
.footer-bottom a { color: var(--c-accent-soft); }
.footer-bottom .sep { margin: 0 8px; opacity: 0.4; }

/* 城市站链接 */
.city-stations {
  background: var(--c-primary-2);
  color: rgba(255, 255, 255, 0.85);
  padding: 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.city-stations-title {
  font-size: 14px;
  color: var(--c-accent-soft);
  letter-spacing: 2px;
  margin-bottom: 18px;
  text-align: center;
  text-transform: uppercase;
}
.city-stations-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px 16px;
}
.city-stations-grid a {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.7);
  padding: 4px 0;
  display: block;
  transition: color 0.2s var(--ease);
}
.city-stations-grid a:hover { color: var(--c-accent-soft); }

/* ============== 返回顶部 ============== */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  background: var(--grad-1);
  color: var(--c-text-inv);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: all 0.3s var(--ease);
  z-index: 99;
}
.back-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-top svg { width: 24px; height: 24px; }

/* ============== 入场动画 ============== */
.reveal-on {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s var(--ease);
}
.reveal-on.is-in {
  opacity: 1;
  transform: translateY(0);
}