/* ==========================================================================
   XSUS 航海旅行手册 - 核心样式表
   主题：粉蓝色海港旅行手册
   配色规范：
     背景: #F1F8FB (清晨海港白雾)
     粉蓝: #C4DEED (航海晴空水蓝)
     海玻璃绿: #C9E5DF (清透浅海玻璃)
     淡珊瑚: #F0C9BE (夕阳航标珊瑚)
     沙色: #F5E8CD (浅滩沙洲微光)
     正文: #354E5B (深海青灰岩石)
   ========================================================================== */

:root {
  --bg-main: #F1F8FB;
  --bg-card: #FFFFFF;
  --bg-soft: #F6FAFC;
  --color-blue: #C4DEED;
  --color-blue-deep: #7BAECB;
  --color-seaglass: #C9E5DF;
  --color-seaglass-deep: #669B91;
  --color-coral: #F0C9BE;
  --color-coral-deep: #D47B6A;
  --color-sand: #F5E8CD;
  --color-sand-deep: #9F8255;
  --text-main: #354E5B;
  --text-muted: #6B828F;
  --text-light: #9BB0BD;
  --border-line: rgba(196, 222, 237, 0.65);
  --border-chart: rgba(53, 78, 91, 0.12);
  --sidebar-width: 90px;
  --header-height-mobile: 64px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-subtle: 0 4px 20px rgba(53, 78, 91, 0.05);
  --shadow-float: 0 12px 36px rgba(53, 78, 91, 0.09);
  --font-heading: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-num: "Georgia", "Times New Roman", serif;
  --transition: all 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* 海图细线底纹与经纬度装饰 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(to right, var(--border-chart) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-chart) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.7;
}

/* 字体排版规范 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--text-main);
  line-height: 1.35;
}

.num, .metric-value, .price-amount, .gate-counter, .geo-coord {
  font-family: var(--font-num);
  font-variant-numeric: proportional-nums;
  letter-spacing: 0.02em;
}

p {
  margin-bottom: 1.15rem;
  color: var(--text-main);
}

a {
  color: var(--text-main);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-coral-deep);
}

ul, ol {
  list-style: none;
}

img, svg {
  display: block;
  max-width: 100%;
}

/* ==========================================================================
   页面骨架：左侧窄竖栏桌面导航
   ========================================================================== */
.site-wrapper {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.sidebar-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--border-line);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0 16px;
  z-index: 100;
  transition: var(--transition);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.sidebar-nav::-webkit-scrollbar {
  display: none;
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}

.sidebar-logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-blue), var(--color-seaglass));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(123, 174, 203, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.8);
  flex-shrink: 0;
}

.sidebar-logo svg {
  width: 28px;
  height: 28px;
  display: block;
}

.sidebar-brand-name {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--text-main);
  text-transform: uppercase;
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  margin: 6px 0;
}

.sidebar-item {
  width: 100%;
}

.sidebar-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 4px;
  gap: 3px;
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  position: relative;
  transition: var(--transition);
}

.sidebar-link svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 1.6;
  fill: none;
  transition: var(--transition);
}

.sidebar-link:hover,
.sidebar-link.active {
  color: var(--text-main);
}

.sidebar-link.active::before {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: var(--color-coral-deep);
  border-radius: 3px 0 0 3px;
}

.sidebar-cta-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--color-coral), var(--color-sand));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  font-size: 0.65rem;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(240, 201, 190, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.9);
  transition: var(--transition);
  text-align: center;
  line-height: 1.1;
  padding: 4px;
}

.sidebar-cta-btn:hover {
  transform: scale(1.08) rotate(3deg);
  box-shadow: 0 6px 18px rgba(240, 201, 190, 0.85);
  color: var(--text-main);
}

/* 移动端顶栏与抽屉菜单 (在桌面端彻底隐藏，严禁泄漏到桌面视口) */
.mobile-header,
.mobile-drawer {
  display: none !important;
}

/* 主内容容器 */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ==========================================================================
   旅行手册边注与航海印章设计系统
   ========================================================================== */
.margin-note {
  position: relative;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-left: 2px dashed var(--color-blue-deep);
  padding-left: 14px;
  margin: 18px 0;
  background: rgba(196, 222, 237, 0.15);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.margin-note-tag {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-coral-deep);
  font-weight: 600;
  display: block;
  margin-bottom: 2px;
}

/* 航海信号旗徽章组 (ICS Flags) */
.maritime-flag-row {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  vertical-align: middle;
}

.signal-flag {
  width: 22px;
  height: 16px;
  border: 1px solid rgba(53, 78, 91, 0.2);
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

/* 航海印章 */
.harbor-stamp {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-coral-deep);
  color: var(--color-coral-deep);
  border-radius: 50%;
  width: 82px;
  height: 82px;
  padding: 6px;
  text-align: center;
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  line-height: 1.15;
  transform: rotate(-6deg);
  opacity: 0.88;
  user-select: none;
}

.harbor-stamp-date {
  font-family: var(--font-num);
  font-size: 0.72rem;
  border-top: 1px solid var(--color-coral-deep);
  border-bottom: 1px solid var(--color-coral-deep);
  margin: 3px 0;
  padding: 1px 4px;
}

/* 波浪分隔组件 */
.wave-divider {
  width: 100%;
  overflow: hidden;
  line-height: 0;
  margin: 40px 0 20px;
}

.wave-divider svg {
  display: block;
  width: 100%;
  height: 38px;
  fill: none;
  stroke: var(--color-blue);
  stroke-width: 1.5;
}

/* ==========================================================================
   首屏 (Hero): 上下错位超大品牌字 + 浅色海港平面图
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 70px 0 60px;
  overflow: hidden;
  background: radial-gradient(circle at 75% 35%, rgba(196, 222, 237, 0.45), transparent 60%),
              radial-gradient(circle at 15% 85%, rgba(201, 229, 223, 0.4), transparent 50%);
}

.hero-background-chart {
  position: absolute;
  top: 50%;
  right: -5%;
  transform: translateY(-50%);
  width: 65%;
  max-width: 860px;
  opacity: 0.42;
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border-line);
  border-radius: 30px;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 24px;
  box-shadow: var(--shadow-subtle);
}

.hero-badge .coord {
  font-family: var(--font-num);
  color: var(--color-blue-deep);
  font-weight: 600;
}

/* 上下错位的超大品牌文字 */
.hero-title-group {
  margin-bottom: 28px;
}

.hero-title-top {
  display: block;
  font-size: clamp(3.2rem, 7.5vw, 6.2rem);
  font-weight: 300;
  letter-spacing: 0.16em;
  line-height: 1.05;
  color: var(--text-main);
  text-transform: uppercase;
  transform: translateX(-6px);
}

.hero-title-sub {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-top: -6px;
  margin-left: clamp(28px, 6vw, 84px); /* 错位关键 */
}

.hero-title-bottom {
  font-size: clamp(2.4rem, 5.5vw, 4.6rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  line-height: 1.1;
  background: linear-gradient(120deg, var(--text-main) 30%, var(--color-blue-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title-tag {
  font-size: 1rem;
  letter-spacing: 0.18em;
  color: var(--color-coral-deep);
  font-weight: 400;
  border-bottom: 1px solid var(--color-coral);
  padding-bottom: 2px;
}

.hero-desc {
  font-size: 1.12rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 34px;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 34px;
  background: linear-gradient(135deg, #354E5B, #486A7B);
  color: #FFFFFF;
  border-radius: 40px;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  font-weight: 400;
  box-shadow: 0 8px 24px rgba(53, 78, 91, 0.22);
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #24363F, #354E5B);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(53, 78, 91, 0.3);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--color-blue);
  color: var(--text-main);
  border-radius: 40px;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: #FFFFFF;
  border-color: var(--color-blue-deep);
  color: var(--text-main);
  transform: translateY(-2px);
  box-shadow: var(--shadow-subtle);
}

.hero-stats-bar {
  display: flex;
  gap: 36px;
  margin-top: 52px;
  padding-top: 28px;
  border-top: 1px dashed var(--border-line);
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
}

.hero-stat-item .stat-num {
  font-family: var(--font-num);
  font-size: 1.85rem;
  color: var(--text-main);
  line-height: 1.2;
}

.hero-stat-item .stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* ==========================================================================
   航程里程碑 (Product Advantages)
   ========================================================================== */
.section {
  padding: 85px 0;
  position: relative;
}

.section-header {
  margin-bottom: 52px;
  position: relative;
}

.section-subtitle {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--color-coral-deep);
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--text-main);
  line-height: 1.3;
}

.section-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  max-width: 680px;
  margin-top: 10px;
}

.milestones-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.milestone-card {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  position: relative;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.milestone-card:hover {
  transform: translateY(-4px);
  background: #FFFFFF;
  border-color: var(--color-blue-deep);
  box-shadow: var(--shadow-float);
}

.milestone-num {
  font-family: var(--font-num);
  font-size: 2.2rem;
  color: var(--color-blue);
  line-height: 1;
  margin-bottom: 14px;
  font-style: italic;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.milestone-coord {
  font-size: 0.68rem;
  color: var(--text-light);
  font-style: normal;
  letter-spacing: 0.05em;
}

.milestone-title {
  font-size: 1.16rem;
  font-weight: 400;
  margin-bottom: 12px;
  color: var(--text-main);
  letter-spacing: 0.04em;
}

.milestone-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.milestone-tag {
  margin-top: auto;
  align-self: flex-start;
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--bg-soft);
  color: var(--text-muted);
  border: 1px solid var(--border-line);
}

/* ==========================================================================
   节点网络：航线列表 + 静态海图搭配
   ========================================================================== */
.nodes-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: start;
}

.routes-list-panel {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-subtle);
}

.routes-filter-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 14px;
}

.route-tab-btn {
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.route-tab-btn.active,
.route-tab-btn:hover {
  background: var(--color-blue);
  color: var(--text-main);
}

.routes-table {
  width: 100%;
  border-collapse: collapse;
}

.routes-table th {
  text-align: left;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-light);
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-line);
  font-weight: 400;
  text-transform: uppercase;
}

.routes-table td {
  padding: 14px 12px;
  font-size: 0.88rem;
  border-bottom: 1px solid rgba(196, 222, 237, 0.35);
  color: var(--text-main);
}

.routes-table tr:hover td {
  background: rgba(241, 248, 251, 0.6);
}

.route-port {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

.port-flag {
  width: 22px;
  height: 16px;
  border-radius: 2px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.route-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.72rem;
  font-weight: 500;
}

.badge-iplc {
  background: rgba(240, 201, 190, 0.4);
  color: var(--color-coral-deep);
  border: 1px solid var(--color-coral);
}

.badge-bgp {
  background: rgba(201, 229, 223, 0.5);
  color: var(--color-seaglass-deep);
  border: 1px solid var(--color-seaglass);
}

.static-map-panel {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.map-svg-frame {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-line);
  background: #EBF4F8;
  overflow: hidden;
  position: relative;
}

.map-legend {
  display: flex;
  justify-content: space-around;
  padding-top: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* ==========================================================================
   AI 与流媒体：“工作航线”与“休闲航线”双栏
   ========================================================================== */
.routes-dual-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.dual-column-card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--shadow-subtle);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.dual-column-card:hover {
  box-shadow: var(--shadow-float);
  border-color: var(--color-blue-deep);
}

.dual-column-card.work {
  border-top: 4px solid var(--color-blue-deep);
}

.dual-column-card.leisure {
  border-top: 4px solid var(--color-coral-deep);
}

.dual-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
}

.dual-route-title {
  font-size: 1.48rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

.dual-route-tag {
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 14px;
  letter-spacing: 0.08em;
}

.tag-work {
  background: rgba(196, 222, 237, 0.4);
  color: var(--text-main);
}

.tag-leisure {
  background: rgba(240, 201, 190, 0.4);
  color: var(--color-coral-deep);
}

.dual-service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 24px 0;
}

.service-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-soft);
  border: 1px solid rgba(196, 222, 237, 0.5);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  color: var(--text-main);
  transition: var(--transition);
}

.service-pill:hover {
  background: #FFFFFF;
  border-color: var(--color-blue-deep);
}

.service-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.route-feature-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--border-line);
}

.route-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.route-feature-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-seaglass-deep);
  flex-shrink: 0;
  margin-top: 4px;
}

/* ==========================================================================
   五档套餐：登船票样式的纵向列表 (Boarding Passes)
   ========================================================================== */
.tickets-vertical-stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 1040px;
  margin: 0 auto;
}

.boarding-pass-card {
  display: grid;
  grid-template-columns: 200px 1fr 220px;
  background: #FFFFFF;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.boarding-pass-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-float);
  border-color: var(--color-blue-deep);
}

.boarding-pass-card.featured {
  border: 2px solid var(--color-blue-deep);
  background: linear-gradient(to right, #FFFFFF, #F8FCFE);
}

.pass-corner-badge {
  position: absolute;
  top: 12px;
  right: -32px;
  background: var(--color-coral-deep);
  color: #FFFFFF;
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  padding: 4px 34px;
  transform: rotate(45deg);
  font-weight: 500;
  box-shadow: 0 2px 6px rgba(0,0,0,0.12);
}

/* 登船票左侧：票根舱位信息 */
.pass-stub-left {
  background: linear-gradient(145deg, #F5FAFD, #EAF3F8);
  border-right: 2px dashed rgba(53, 78, 91, 0.18);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

/* 票根打孔缺口 */
.pass-stub-left::before,
.pass-stub-left::after {
  content: "";
  position: absolute;
  right: -9px;
  width: 16px;
  height: 16px;
  background-color: var(--bg-main);
  border-radius: 50%;
  border: 1px solid var(--border-line);
  z-index: 2;
}

.pass-stub-left::before {
  top: -8px;
}

.pass-stub-left::after {
  bottom: -8px;
}

.pass-class-tag {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--color-coral-deep);
  text-transform: uppercase;
  font-weight: 600;
}

.pass-tier-name {
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--text-main);
  letter-spacing: 0.06em;
  margin: 6px 0 2px;
}

.pass-tier-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.pass-barcode {
  font-family: var(--font-num);
  font-size: 0.65rem;
  color: var(--text-light);
  letter-spacing: 0.18em;
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px solid rgba(53, 78, 91, 0.08);
}

/* 登船票中部：详细航行权益 */
.pass-body-center {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.pass-specs-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.pass-spec-item {
  display: flex;
  flex-direction: column;
}

.spec-item-label {
  font-size: 0.72rem;
  color: var(--text-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.spec-item-value {
  font-family: var(--font-num);
  font-size: 1.15rem;
  color: var(--text-main);
  font-weight: 500;
}

.pass-perks-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.pass-perk-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pass-perk-item svg {
  width: 14px;
  height: 14px;
  color: var(--color-seaglass-deep);
}

/* 登船票右侧：资费与登船CTA */
.pass-action-right {
  border-left: 2px dashed rgba(53, 78, 91, 0.18);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: #FCFDFE;
  position: relative;
}

.pass-price-box {
  margin-bottom: 14px;
}

.pass-currency {
  font-family: var(--font-num);
  font-size: 1.1rem;
  color: var(--text-main);
  vertical-align: top;
  margin-right: 2px;
}

.pass-price-num {
  font-family: var(--font-num);
  font-size: 2.2rem;
  color: var(--text-main);
  font-weight: 400;
  line-height: 1;
}

.pass-period {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.pass-booking-btn {
  width: 100%;
  padding: 10px 16px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--text-main), #4B6877);
  color: #FFFFFF;
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-align: center;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.pass-booking-btn:hover {
  background: var(--color-coral-deep);
  color: #FFFFFF;
  transform: scale(1.02);
}

.pass-disclaimer-note {
  font-size: 0.65rem;
  color: var(--text-light);
  margin-top: 8px;
}

/* 套餐下方透明声明 */
.pricing-transparency-box {
  margin-top: 32px;
  padding: 18px 24px;
  background: rgba(245, 232, 205, 0.35);
  border: 1px dashed var(--color-sand-deep);
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  color: var(--text-main);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.pricing-transparency-box svg {
  width: 20px;
  height: 20px;
  color: var(--color-sand-deep);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   九篇文章：旅行专栏排版 (大小图文交替)
   ========================================================================== */
.articles-magazine-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 28px;
}

.article-card {
  background: #FFFFFF;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-float);
  border-color: var(--color-blue-deep);
}

/* 大小图文交替排版 */
.article-card.size-featured {
  grid-column: span 8;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
}

.article-card.size-secondary {
  grid-column: span 4;
}

.article-card.size-standard {
  grid-column: span 4;
}

.article-card.size-wide {
  grid-column: span 6;
}

.article-card.size-compact {
  grid-column: span 3;
}

.article-card-cover {
  position: relative;
  min-height: 190px;
  max-height: 220px;
  overflow: hidden;
  background: #EBF4F9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-card.size-featured .article-card-cover {
  min-height: 100%;
  max-height: none;
}

.article-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.article-card:hover .article-cover-img {
  transform: scale(1.06);
}

.article-card-cover svg:not(.article-cover-img) {
  width: 64px;
  height: 64px;
  opacity: 0.45;
  transition: var(--transition);
}

.article-card:hover .article-card-cover svg:not(.article-cover-img) {
  transform: scale(1.1) rotate(4deg);
  opacity: 0.7;
}

.article-card-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.article-cat-badge {
  font-size: 0.68rem;
  padding: 2px 8px;
  background: rgba(196, 222, 237, 0.4);
  color: var(--text-main);
  border-radius: 4px;
  letter-spacing: 0.06em;
}

.article-card-title {
  font-size: 1.18rem;
  font-weight: 400;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text-main);
  letter-spacing: 0.04em;
}

.article-card.size-featured .article-card-title {
  font-size: 1.45rem;
}

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 18px;
  flex: 1;
}

.article-read-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-coral-deep);
  letter-spacing: 0.06em;
}

.article-read-link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.article-card:hover .article-read-link svg {
  transform: translateX(4px);
}

/* ==========================================================================
   航行者真实手记 / 用户评价 (Reviews)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  box-shadow: var(--shadow-subtle);
  position: relative;
  display: flex;
  flex-direction: column;
}

.review-quote-mark {
  font-family: var(--font-num);
  font-size: 3rem;
  line-height: 1;
  color: var(--color-blue);
  margin-bottom: -10px;
}

.review-content {
  font-size: 0.92rem;
  color: var(--text-main);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
  flex: 1;
}

.review-author-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-line);
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-seaglass), var(--color-sand));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.85rem;
}

.review-author-info {
  display: flex;
  flex-direction: column;
}

.review-author-name {
  font-size: 0.88rem;
  font-weight: 500;
}

.review-author-role {
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ 分组索引体系 (Grouped FAQ Index)
   ========================================================================== */
.faq-container {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  background: #FFFFFF;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-subtle);
}

.faq-nav-index {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-right: 1px solid var(--border-line);
  padding-right: 24px;
}

.faq-group-btn {
  background: none;
  border: none;
  text-align: left;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-group-btn.active,
.faq-group-btn:hover {
  background: rgba(196, 222, 237, 0.35);
  color: var(--text-main);
  font-weight: 500;
}

.faq-group-btn .group-count {
  font-family: var(--font-num);
  font-size: 0.75rem;
  color: var(--text-light);
}

.faq-group-content {
  display: none;
}

.faq-group-content.active {
  display: block;
}

.faq-group-heading {
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: 20px;
  color: var(--text-main);
  letter-spacing: 0.06em;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-line);
}

.faq-item {
  border-bottom: 1px solid rgba(196, 222, 237, 0.4);
  margin-bottom: 8px;
}

.faq-question-btn {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 16px 0;
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 400;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.faq-question-btn:hover {
  color: var(--color-coral-deep);
}

.faq-icon-arrow {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
  transition: transform 0.25s ease;
}

.faq-item.open .faq-icon-arrow {
  transform: rotate(180deg);
}

.faq-answer-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s ease-out;
}

.faq-answer-inner {
  padding: 0 0 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ==========================================================================
   Footer: 简洁海港航标 + 友情链接与规范链接
   ========================================================================== */
.site-footer {
  background: #EAF2F7;
  border-top: 1px solid var(--border-line);
  padding: 60px 0 36px;
  margin-top: 60px;
  position: relative;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-brand-title {
  font-size: 1.18rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--text-main);
}

.footer-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 360px;
}

.footer-col-title {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-coral-deep);
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link-item a {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  transition: var(--transition);
}

.footer-link-item a:hover {
  color: var(--text-main);
  padding-left: 4px;
}

.footer-affiliate-links {
  margin: 30px 0 24px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px dashed var(--border-line);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-affiliate-links span {
  font-weight: 500;
  color: var(--text-main);
}

.footer-affiliate-links a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--color-blue-deep);
}

.footer-affiliate-links a:hover {
  color: var(--color-coral-deep);
}

.footer-bottom-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(53, 78, 91, 0.08);
  font-size: 0.78rem;
  color: var(--text-light);
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   响应式断点适配 (375px ~ 1440px)
   ========================================================================== */
@media (max-width: 1024px) {
  .milestones-track {
    grid-template-columns: repeat(2, 1fr);
  }
  .nodes-grid {
    grid-template-columns: 1fr;
  }
  .boarding-pass-card {
    grid-template-columns: 170px 1fr 190px;
  }
  .article-card.size-featured {
    grid-column: span 12;
  }
  .article-card.size-secondary,
  .article-card.size-standard,
  .article-card.size-wide {
    grid-column: span 6;
  }
  .article-card.size-compact {
    grid-column: span 6;
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-container {
    grid-template-columns: 1fr;
  }
  .faq-nav-index {
    border-right: none;
    border-bottom: 1px solid var(--border-line);
    padding-right: 0;
    padding-bottom: 16px;
    flex-direction: row;
    overflow-x: auto;
  }
  .faq-group-btn {
    white-space: nowrap;
  }
}

@media (max-width: 820px) {
  :root {
    --sidebar-width: 0px;
  }
  .sidebar-nav {
    display: none; /* 移动端使用抽屉菜单 */
  }
  .main-content {
    margin-left: 0;
    padding-top: var(--header-height-mobile);
  }
  .mobile-header {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height-mobile);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-line);
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
  }
  .mobile-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.08em;
  }
  .mobile-menu-toggle {
    background: none;
    border: none;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-main);
  }
  .mobile-drawer {
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(241, 248, 251, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    padding: 30px 24px;
    display: flex !important;
    flex-direction: column;
    gap: 18px;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    overflow-y: auto;
    pointer-events: none;
    visibility: hidden;
  }
  .mobile-drawer.open {
    transform: translateX(0);
    pointer-events: auto;
    visibility: visible;
  }
  .mobile-drawer-link {
    font-size: 1.1rem;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--border-line);
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  /* 登船票在手机端自然垂直堆叠 */
  .boarding-pass-card {
    grid-template-columns: 1fr;
    display: flex;
    flex-direction: column;
  }
  .pass-stub-left {
    border-right: none;
    border-bottom: 2px dashed rgba(53, 78, 91, 0.18);
  }
  .pass-stub-left::before,
  .pass-stub-left::after {
    display: none;
  }
  .pass-action-right {
    border-left: none;
    border-top: 2px dashed rgba(53, 78, 91, 0.18);
    padding: 20px;
  }
  .pass-specs-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .routes-dual-column {
    grid-template-columns: 1fr;
  }
  .article-card.size-secondary,
  .article-card.size-standard,
  .article-card.size-wide,
  .article-card.size-compact {
    grid-column: span 12;
  }
  .article-card.size-featured {
    grid-template-columns: 1fr;
  }
  .article-card.size-featured .article-card-cover {
    min-height: 220px;
    max-height: 250px;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }
  .hero-stats-bar {
    flex-direction: column;
    gap: 16px;
  }
  .milestones-track {
    grid-template-columns: 1fr;
  }
  .pass-specs-row {
    grid-template-columns: 1fr;
  }
}