/* ==========================================================================
   秒秒云 - 高山远征级网络服务指南 (Mountain Expedition Game Style)
   Palette:
     Snow:          #F6F8F7
     Slate:         #394957
     Alpine Orange: #E4773D
     Muted Glacier: #94BEC7
   ========================================================================== */

:root {
  --color-snow: #F6F8F7;
  --color-snow-soft: #EDF2F1;
  --color-snow-card: #FFFFFF;
  --color-slate-900: #1A232A;
  --color-slate-800: #232E37;
  --color-slate-700: #2D3B47;
  --color-slate: #394957;
  --color-slate-600: #4B5E6F;
  --color-slate-500: #627688;
  --color-slate-400: #8598A8;
  --color-slate-200: #D8E0E5;
  --color-slate-100: #EBF0F3;
  --color-orange: #E4773D;
  --color-orange-hover: #CF642A;
  --color-orange-light: #FDF1EA;
  --color-glacier: #94BEC7;
  --color-glacier-deep: #6B9CA7;
  --color-glacier-light: #EBF4F6;
  --color-glacier-glow: rgba(148, 190, 199, 0.25);
  
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Roboto Mono", "Cascadia Code", Consolas, Menlo, monospace;
  
  --trail-width: 3px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 6px rgba(26, 35, 42, 0.06);
  --shadow-md: 0 6px 18px rgba(26, 35, 42, 0.08);
  --shadow-lg: 0 14px 34px rgba(26, 35, 42, 0.12);
  --shadow-orange: 0 8px 24px rgba(228, 119, 61, 0.28);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --container-max: 1240px;
}

/* Base Reset & Typography */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-slate-800);
  background-color: var(--color-snow);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--color-snow);
  position: relative;
}

/* Reduced Motion Mode */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Accessible Focus States */
:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: transparent;
}

/* Coordinate & Expedition Micro Labels */
.coord-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-orange);
  background: var(--color-orange-light);
  border: 1px solid rgba(228, 119, 61, 0.25);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
}

.coord-tag--glacier {
  color: var(--color-slate-800);
  background: var(--color-glacier-light);
  border-color: rgba(148, 190, 199, 0.4);
}

.coord-tag--dark {
  color: var(--color-glacier);
  background: rgba(148, 190, 199, 0.12);
  border-color: rgba(148, 190, 199, 0.25);
}

.elevation-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-slate-600);
  background: var(--color-snow-soft);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--color-slate-400);
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

@media (min-width: 768px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

/* Navigation Header */
.expedition-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 248, 247, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(57, 73, 87, 0.1);
  transition: all var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
  position: relative;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo-img {
  height: 38px;
  width: auto;
}

/* Nav Menu */
.nav-menu {
  display: none;
}

@media (min-width: 1080px) {
  .nav-menu {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    list-style: none;
  }

  .nav-link {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-slate-700);
    padding: 0.5rem 0.35rem;
    position: relative;
    transition: color var(--transition-fast);
  }

  .nav-link:hover,
  .nav-link:focus-visible {
    color: var(--color-orange);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-orange);
    transition: width var(--transition-fast);
  }

  .nav-link:hover::after {
    width: 100%;
  }
}

/* Header Action CTA */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-cta-nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: var(--color-orange);
  color: var(--color-snow);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-cta-nav:hover {
  background: var(--color-orange-hover);
  box-shadow: var(--shadow-orange);
  transform: translateY(-1px);
  color: var(--color-snow);
}

/* Mobile Hamburger Button */
.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 8px;
  background: var(--color-snow-soft);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  z-index: 110;
}

@media (min-width: 1080px) {
  .hamburger-btn {
    display: none;
  }
}

.hamburger-line {
  width: 22px;
  height: 2px;
  background-color: var(--color-slate-800);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 4.25rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-snow);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: 99;
  border-top: 1px solid var(--color-slate-200);
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-slate-800);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
  background: var(--color-orange-light);
  color: var(--color-orange);
  border-color: var(--color-orange);
}

.mobile-drawer-cta {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Mountain Expedition Hero Section */
.hero-expedition {
  position: relative;
  background: linear-gradient(180deg, #24303B 0%, #303F4D 45%, #394957 75%, #F6F8F7 100%);
  color: var(--color-snow);
  padding: 3.5rem 0 2rem;
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero-expedition {
    padding: 5rem 0 3.5rem;
  }
}

/* Mountain SVG Background Layers */
.hero-mountain-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-mountain-svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: bottom center;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.hero-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 1rem;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--color-snow);
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.5rem;
  }
}

.hero-title .brand-highlight {
  color: var(--color-orange);
  position: relative;
  display: inline-block;
}

.hero-lead {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-slate-100);
  max-width: 720px;
  margin: 0 auto 2.25rem;
  text-shadow: 0 1px 4px rgba(0,0,0,0.35);
}

@media (min-width: 768px) {
  .hero-lead {
    font-size: 1.25rem;
  }
}

/* Permanent Registration / Pricing Controls */
.hero-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.btn-primary-expedition {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--color-orange);
  color: var(--color-snow);
  font-size: 1.05rem;
  font-weight: 800;
  padding: 0.95rem 2.2rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-orange);
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.btn-primary-expedition:hover {
  background: var(--color-orange-hover);
  transform: translateY(-2px);
  color: var(--color-snow);
}

.btn-secondary-expedition {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: rgba(148, 190, 199, 0.15);
  color: var(--color-snow);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 0.95rem 1.85rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-glacier);
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

.btn-secondary-expedition:hover {
  background: rgba(148, 190, 199, 0.3);
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* Hero Key Indicators Bar */
.hero-stats-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  background: rgba(26, 35, 42, 0.75);
  border: 1px solid rgba(148, 190, 199, 0.25);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  backdrop-filter: blur(10px);
  text-align: left;
}

@media (min-width: 640px) {
  .hero-stats-bar {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  border-left: 2px solid var(--color-glacier);
  padding-left: 0.85rem;
}

.stat-item--orange {
  border-left-color: var(--color-orange);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-glacier);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.2rem;
}

.stat-value {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-snow);
}

.stat-desc {
  font-size: 0.78rem;
  color: var(--color-slate-400);
}

/* Vertical Trail Track Architecture */
.expedition-trail {
  position: relative;
  padding: 3rem 0;
}

/* Central Trail Line on Desktop */
.trail-canvas-wrapper {
  position: relative;
}

.trail-canvas-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 24px;
  width: var(--trail-width);
  background: repeating-linear-gradient(
    to bottom,
    var(--color-orange) 0px,
    var(--color-orange) 10px,
    transparent 10px,
    transparent 18px
  );
  opacity: 0.45;
  z-index: 0;
  pointer-events: none;
}

@media (min-width: 1024px) {
  .trail-canvas-wrapper::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* Section Common Styling */
.expedition-section {
  position: relative;
  padding: 4.5rem 0;
  scroll-margin-top: 5rem;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.25rem;
  position: relative;
}

.section-waypoint-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-slate-800);
  line-height: 1.3;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.35rem;
  }
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-slate-600);
  line-height: 1.65;
}

/* Advantage Equipment Notes Grid */
.equipment-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .equipment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .equipment-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.equipment-card {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.equipment-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-orange);
  box-shadow: var(--shadow-md);
}

.equipment-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.equipment-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--color-orange-light);
  border: 1px solid rgba(228, 119, 61, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-orange);
}

.equipment-tag-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-slate-400);
}

.equipment-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-slate-800);
  margin-bottom: 0.75rem;
}

.equipment-desc {
  font-size: 0.95rem;
  color: var(--color-slate-600);
  line-height: 1.6;
  flex-grow: 1;
}

.equipment-meta-spec {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--color-slate-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-slate-500);
}

/* Destinations & Network Nodes Section */
.network-section {
  background: linear-gradient(180deg, #2D3B47 0%, #232E37 100%);
  color: var(--color-snow);
  border-radius: var(--radius-lg);
  padding: 3.5rem 1.5rem;
  margin-top: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .network-section {
    padding: 4.5rem 2.5rem;
  }
}

.network-section .section-title {
  color: var(--color-snow);
}

.network-section .section-subtitle {
  color: var(--color-glacier);
}

.network-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 640px) {
  .network-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .network-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.destination-card {
  background: rgba(57, 73, 87, 0.45);
  border: 1px solid rgba(148, 190, 199, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  backdrop-filter: blur(6px);
  transition: all var(--transition-fast);
}

.destination-card:hover {
  border-color: var(--color-glacier);
  background: rgba(57, 73, 87, 0.75);
  transform: translateY(-3px);
}

.dest-badge-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.dest-flag-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dest-flag-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-orange);
  background: rgba(228, 119, 61, 0.15);
  padding: 0.2rem 0.45rem;
  border-radius: var(--radius-sm);
}

.dest-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-snow);
}

.dest-specs {
  list-style: none;
  font-size: 0.85rem;
  color: var(--color-slate-200);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-top: 0.85rem;
}

.dest-specs li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed rgba(148, 190, 199, 0.15);
  padding-bottom: 0.3rem;
}

.dest-specs span:first-child {
  color: var(--color-glacier);
}

.network-notice-box {
  background: rgba(26, 35, 42, 0.65);
  border-left: 3px solid var(--color-orange);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-slate-200);
  line-height: 1.6;
}

/* AI & Streaming Trip-Planning Scenarios */
.scenario-tabs-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.scenario-tab-btn {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  background: var(--color-snow-soft);
  color: var(--color-slate-700);
  border: 1px solid var(--color-slate-200);
  transition: all var(--transition-fast);
}

.scenario-tab-btn.is-active,
.scenario-tab-btn:hover {
  background: var(--color-slate-800);
  color: var(--color-snow);
  border-color: var(--color-slate-800);
}

.scenario-tab-btn.is-active {
  background: var(--color-orange);
  border-color: var(--color-orange);
}

.scenario-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.scenario-card {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.scenario-card-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.scenario-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  background: var(--color-glacier-light);
  color: var(--color-slate-800);
  border: 1px solid rgba(148, 190, 199, 0.4);
}

.scenario-card-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-slate-800);
}

.scenario-card-sub {
  font-size: 0.8rem;
  color: var(--color-slate-500);
  font-family: var(--font-mono);
}

.scenario-tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.tool-chip {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background: var(--color-snow-soft);
  color: var(--color-slate-700);
  border: 1px solid var(--color-slate-200);
}

.scenario-body {
  font-size: 0.92rem;
  color: var(--color-slate-600);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.scenario-recommendation {
  background: var(--color-snow-soft);
  border-left: 3px solid var(--color-glacier-deep);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
}

.scenario-recommendation strong {
  color: var(--color-slate-800);
  display: block;
  margin-bottom: 0.2rem;
}

/* Base Camp Interactive Exploration (Optional Game-Style Setup Tips) */
.basecamp-interactive-box {
  background: linear-gradient(135deg, #1A232A 0%, #2D3B47 100%);
  color: var(--color-snow);
  border-radius: var(--radius-lg);
  padding: 2rem 1.25rem;
  margin: 3rem 0;
  border: 1px solid rgba(148, 190, 199, 0.25);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
  .basecamp-interactive-box {
    padding: 3rem 2.5rem;
  }
}

.basecamp-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 2rem;
}

.basecamp-header h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-snow);
  margin-bottom: 0.5rem;
}

.basecamp-header p {
  font-size: 0.95rem;
  color: var(--color-glacier);
}

/* Camp Selector Controls */
.camp-controls-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .camp-controls-track {
    grid-template-columns: repeat(3, 1fr);
  }
}

.camp-btn {
  text-align: left;
  background: rgba(57, 73, 87, 0.5);
  border: 1px solid rgba(148, 190, 199, 0.2);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  color: var(--color-snow);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  cursor: pointer;
  position: relative;
}

.camp-btn:hover {
  background: rgba(57, 73, 87, 0.8);
  border-color: var(--color-glacier);
}

.camp-btn.is-selected {
  background: rgba(228, 119, 61, 0.15);
  border-color: var(--color-orange);
  box-shadow: 0 0 16px rgba(228, 119, 61, 0.3);
}

.camp-btn.is-selected::after {
  content: '✓ 正在驻扎';
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-orange);
}

.camp-btn-level {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-glacier);
  letter-spacing: 0.08em;
}

.camp-btn-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-snow);
}

.camp-btn-desc {
  font-size: 0.85rem;
  color: var(--color-slate-200);
}

/* Active Camp Tip Panel */
.camp-panels-container {
  background: rgba(26, 35, 42, 0.85);
  border: 1px solid rgba(148, 190, 199, 0.2);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.camp-panel {
  display: none;
}

.camp-panel.is-active {
  display: block;
}

.camp-panel-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-orange);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.camp-panel-summary {
  font-size: 0.95rem;
  color: var(--color-slate-100);
  margin-bottom: 1.25rem;
}

.camp-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.camp-checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: rgba(57, 73, 87, 0.35);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-snow);
}

.camp-check-bullet {
  color: var(--color-orange);
  font-weight: 800;
  line-height: 1;
}

.camp-actions-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(148, 190, 199, 0.2);
}

.btn-camp-reset {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-glacier);
  background: rgba(148, 190, 199, 0.1);
  border: 1px solid rgba(148, 190, 199, 0.3);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-camp-reset:hover {
  background: rgba(148, 190, 199, 0.2);
  color: var(--color-snow);
}

.camp-disclaimer {
  font-size: 0.78rem;
  color: var(--color-slate-400);
  line-height: 1.5;
  text-align: center;
  margin-top: 1rem;
}

/* Pricing Section & Comparison Table */
.pricing-intro-note {
  max-width: 820px;
  margin: 0 auto 2.5rem;
  background: var(--color-snow-soft);
  border-left: 4px solid var(--color-orange);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.88rem;
  color: var(--color-slate-700);
  text-align: left;
}

.pricing-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 640px) {
  .pricing-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .pricing-cards-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pricing-card {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pricing-card--highlighted {
  border: 2px solid var(--color-orange);
  box-shadow: 0 8px 30px rgba(228, 119, 61, 0.15);
  background: #FFFFFF;
}

.pricing-badge-popular {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-orange);
  color: var(--color-snow);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.pricing-tier-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-slate-800);
  margin-bottom: 0.25rem;
}

.pricing-tier-desc {
  font-size: 0.85rem;
  color: var(--color-slate-500);
  min-height: 2.6rem;
  margin-bottom: 1.25rem;
}

.pricing-price-box {
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-slate-100);
}

.price-currency {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-slate-800);
}

.price-val {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--color-slate-800);
}

.price-cycle {
  font-size: 0.8rem;
  color: var(--color-slate-400);
}

.price-unverified-tag,
.price-tag-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-orange);
  background: var(--color-orange-light);
  border: 1px solid rgba(228, 119, 61, 0.25);
  padding: 0.18rem 0.55rem;
  border-radius: var(--radius-sm);
  margin-top: 0.35rem;
  letter-spacing: 0.02em;
}

.price-tag-badge--green {
  color: #15803d;
  background: #f0fdf4;
  border-color: rgba(22, 163, 74, 0.25);
}

.val-price {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-slate-800);
}

.val-price--highlight {
  color: var(--color-orange);
  font-size: 1.05rem;
}

.pricing-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.88rem;
  color: var(--color-slate-700);
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.pricing-features-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.feature-check {
  color: var(--color-orange);
  font-weight: 800;
}

.pricing-card .btn-cta {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  font-weight: 800;
  border-radius: var(--radius-sm);
  background: var(--color-slate-800);
  color: var(--color-snow);
  transition: all var(--transition-fast);
}

.pricing-card .btn-cta:hover {
  background: var(--color-slate-900);
  transform: translateY(-1px);
}

.pricing-card--highlighted .btn-cta {
  background: var(--color-orange);
}

.pricing-card--highlighted .btn-cta:hover {
  background: var(--color-orange-hover);
  box-shadow: var(--shadow-orange);
}

/* Comparison Table (Desktop & Scrollable on Mobile) */
.comparison-table-wrapper {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 2rem;
}

.comparison-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-slate-100);
}

.comparison-table th {
  background: var(--color-snow-soft);
  font-weight: 800;
  color: var(--color-slate-800);
}

.comparison-table tr:hover td {
  background: rgba(235, 244, 246, 0.4);
}

.comparison-table .highlight-col {
  background: rgba(228, 119, 61, 0.04);
  font-weight: 700;
}

.val-pending {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-slate-500);
  background: var(--color-snow-soft);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  display: inline-block;
}

/* Nine Articles Cards Section (3x3 on Desktop, 2 on Tablet, 1 on Mobile) */
.articles-section {
  padding: 4.5rem 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.article-card {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.article-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-slate-800);
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.article-card:hover .article-card-title {
  color: var(--color-orange);
}

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--color-slate-600);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-slate-400);
  padding-top: 0.85rem;
  border-top: 1px dashed var(--color-slate-200);
}

.article-read-link {
  font-weight: 700;
  color: var(--color-orange);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Example Testimonials Section (Clearly Labeled Examples) */
.testimonials-section {
  background: var(--color-snow-soft);
  border-radius: var(--radius-lg);
  padding: 4rem 1.5rem;
  margin: 3rem 0;
  border: 1px solid var(--color-slate-200);
}

@media (min-width: 768px) {
  .testimonials-section {
    padding: 5rem 2.5rem;
  }
}

.testimonials-label-notice {
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-slate-500);
  margin-top: -1.75rem;
  margin-bottom: 2.5rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial-card {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.testimonial-scenario-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-orange);
  margin-bottom: 0.75rem;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--color-slate-700);
  line-height: 1.65;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.testimonial-author-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--color-slate-100);
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-slate-700);
  color: var(--color-snow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
}

.author-info h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-slate-800);
}

.author-info p {
  font-size: 0.75rem;
  color: var(--color-slate-500);
}

/* Accordion FAQ Section */
.faq-section {
  padding: 4.5rem 0;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--color-orange);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-slate-800);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--color-orange);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.92rem;
  color: var(--color-slate-600);
  line-height: 1.65;
  border-top: 1px dashed var(--color-slate-100);
  padding-top: 1rem;
}

/* Bottom Expedition Banner / Final CTA */
.expedition-final-banner {
  background: linear-gradient(135deg, #2D3B47 0%, #1A232A 100%);
  color: var(--color-snow);
  border-radius: var(--radius-lg);
  padding: 3.5rem 1.5rem;
  margin: 2rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .expedition-final-banner {
    padding: 4.5rem 3rem;
  }
}

.final-banner-title {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-snow);
  margin-bottom: 1rem;
}

.final-banner-desc {
  font-size: 1.05rem;
  color: var(--color-glacier);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.65;
}

/* Concise Footer */
.expedition-footer {
  background: var(--color-slate-900);
  color: var(--color-slate-200);
  padding: 4rem 0 2rem;
  border-top: 3px solid var(--color-orange);
  font-size: 0.88rem;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer-top-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
}

.footer-brand-col p {
  color: var(--color-slate-400);
  font-size: 0.85rem;
  line-height: 1.65;
  margin-top: 1rem;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-snow);
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-link {
  color: var(--color-slate-400);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-orange);
}

.footer-partner-badge {
  display: inline-block;
  font-size: 0.72rem;
  background: rgba(148, 190, 199, 0.15);
  color: var(--color-glacier);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  margin-left: 0.4rem;
}

.footer-bottom-bar {
  padding-top: 2rem;
  border-top: 1px solid rgba(148, 190, 199, 0.15);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
  color: var(--color-slate-500);
  font-size: 0.8rem;
}

@media (min-width: 768px) {
  .footer-bottom-bar {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-disclaimer-text {
  font-size: 0.78rem;
  line-height: 1.6;
  max-width: 800px;
  color: var(--color-slate-400);
}

/* ==========================================================================
   Article Pages & Legal Pages Shared Layout Styles
   ========================================================================== */

.article-page-header {
  background: linear-gradient(180deg, #2D3B47 0%, #394957 100%);
  color: var(--color-snow);
  padding: 3rem 0 2.5rem;
  border-bottom: 2px solid var(--color-orange);
}

.breadcrumb-nav {
  margin-bottom: 1rem;
  font-size: 0.85rem;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.breadcrumb-item a {
  color: var(--color-glacier);
}

.breadcrumb-item a:hover {
  color: var(--color-snow);
}

.breadcrumb-separator {
  color: var(--color-slate-400);
}

.breadcrumb-current {
  color: var(--color-snow);
  font-weight: 700;
}

.article-header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-glacier);
}

.article-main-title {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.3;
  color: var(--color-snow);
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .article-main-title {
    font-size: 2.6rem;
  }
}

.article-lead-paragraph {
  font-size: 1.05rem;
  color: var(--color-slate-100);
  line-height: 1.65;
  max-width: 840px;
}

.article-body-container {
  padding: 3.5rem 0 5rem;
}

.article-content-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .article-content-wrapper {
    grid-template-columns: 280px 1fr;
  }
}

.article-sidebar {
  display: none;
}

@media (min-width: 1024px) {
  .article-sidebar {
    display: block;
  }
}

.article-sidebar-inner {
  position: sticky;
  top: 5.5rem;
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.article-toc-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-slate-800);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.88rem;
}

.article-toc-list a {
  color: var(--color-slate-600);
  display: block;
  padding: 0.25rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.5rem;
}

.article-toc-list a:hover {
  color: var(--color-orange);
  border-left-color: var(--color-orange);
}

.article-sidebar-cta {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-slate-100);
  text-align: center;
}

/* Article Markdown Typography */
.article-rich-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-slate-800);
}

.article-rich-text h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--color-slate-800);
  margin-top: 2.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-slate-100);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-rich-text h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-slate-700);
  margin-top: 2rem;
  margin-bottom: 0.85rem;
}

.article-rich-text p {
  margin-bottom: 1.35rem;
}

.article-rich-text ul,
.article-rich-text ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-rich-text li {
  margin-bottom: 0.5rem;
}

.article-rich-text strong {
  font-weight: 700;
  color: var(--color-slate-900);
}

.article-rich-text blockquote {
  background: var(--color-snow-soft);
  border-left: 4px solid var(--color-orange);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  color: var(--color-slate-700);
}

.article-code-block {
  background: var(--color-slate-900);
  color: var(--color-snow);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid rgba(148, 190, 199, 0.2);
}

.article-callout-cta {
  background: linear-gradient(135deg, #FDF1EA 0%, #FFFFFF 100%);
  border: 2px solid var(--color-orange);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin: 2.5rem 0;
  text-align: center;
}

.article-callout-cta h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-slate-800);
  margin-bottom: 0.5rem;
}

.article-callout-cta p {
  font-size: 0.95rem;
  color: var(--color-slate-600);
  margin-bottom: 1.25rem;
}

.article-related-box {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 2px solid var(--color-slate-200);
}

.article-related-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-slate-800);
  margin-bottom: 1.25rem;
}

.article-related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .article-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.related-card-item {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  transition: all var(--transition-fast);
}

.related-card-item:hover {
  border-color: var(--color-orange);
  transform: translateY(-2px);
}

.related-card-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-slate-800);
  margin-bottom: 0.25rem;
}

.related-card-item p {
  font-size: 0.8rem;
  color: var(--color-slate-500);
  margin-bottom: 0;
}

/* Legal / Info Pages Styling */
.legal-content-card {
  background: var(--color-snow-card);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  margin: 3rem auto;
  max-width: 860px;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
  .legal-content-card {
    padding: 3.5rem 3rem;
  }
}

.legal-content-card h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-slate-800);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal-content-card p,
.legal-content-card li {
  font-size: 0.95rem;
  color: var(--color-slate-700);
  line-height: 1.7;
}

.legal-content-card ul {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}