/* ============================================================
   v4 MSN Weather Style - Visual Redesign
   Warm palette, no sidebar, underline tab nav, hero weather
   ============================================================ */

:root {
  /* 暗黑模式基础色板 */
  --bg-page: #020617;
  --bg-card: #020617;
  --bg-footer: #020617;
  --accent: #38BDF8;
  --accent-light: rgba(56,189,248,0.18);
  --secondary: #F97316;
  --text-primary: #E5E7EB;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --temp-warm: #F97316;
  --temp-cool: #38BDF8;
  --shadow-sm: 0 4px 10px rgba(15,23,42,0.85);
  --shadow-card: 0 10px 30px rgba(15,23,42,0.9);
  --shadow-card-hover: 0 18px 45px rgba(15,23,42,0.95);
  --shadow-elevated: 0 22px 60px rgba(15,23,42,0.98);
  --border-color: rgba(148,163,184,0.4);
  --border-subtle: rgba(31,41,55,0.9);
  --topbar-height: 100px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg-page);
  background-image:
    radial-gradient(ellipse at 10% 0%, rgba(56,189,248,0.16) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 20%, rgba(79,70,229,0.22) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 120%, rgba(15,23,42,0.9) 0%, transparent 65%);
  color: var(--text-primary);
  font-family: "DM Sans", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #C5B8A8;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #A89888;
}

/* ============================================================
   Top Navigation Bar (2-row: nav + utility)
   ============================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,23,42,0.96);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(15,23,42,0.9);
}

/* Row 1: Logo + Navigation Tab links */
.topbar-nav {
  display: flex;
  align-items: center;
  height: 52px;
  padding: 0 24px;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
  margin-right: 32px;
}

.topbar-logo img {
  height: 28px;
  width: auto;
}

.topbar-logo span {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 18px;
  font-weight: 400;
  color: #F9FAFB;
  white-space: nowrap;
  letter-spacing: -0.3px;
}

/* Mobile nav toggle button (hamburger) - 与多语言触发器完全一致的整体框 */
.topbar-toggle-btn {
  display: none;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: rgba(15,23,42,0.9);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  font-family: inherit;
}

.topbar-toggle-btn:hover {
  border-color: var(--accent);
  color: #F9FAFB;
}

.topbar-toggle-btn i.fa-bars {
  font-size: 14px;
  opacity: 0.9;
}

.topbar-links {
  display: flex;
  align-items: center;
  gap: 0;
  height: 100%;
}

.topbar-link {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
}

.topbar-link:hover {
  color: #F9FAFB;
}

.topbar-link.active {
  color: #F9FAFB;
  font-weight: 600;
}

.topbar-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px 1px 0 0;
}

/* 多语言下拉（搜索栏最右侧） */
.topbar-lang {
  flex-shrink: 0;
  position: relative;
}

.topbar-lang-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: rgba(15,23,42,0.9);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  font-family: inherit;
}

.topbar-lang-trigger:hover {
  border-color: var(--accent);
  color: #F9FAFB;
}

.topbar-lang-trigger i.fa-globe {
  font-size: 14px;
  opacity: 0.9;
}

.topbar-lang-chevron {
  font-size: 10px;
  opacity: 0.8;
  transition: transform 0.2s;
}

.topbar-lang.open .topbar-lang-chevron {
  transform: rotate(180deg);
}

.topbar-lang-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 140px;
  padding: 6px 0;
  background: rgba(15,23,42,0.98);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: var(--shadow-elevated);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.2s, visibility 0.2s, transform 0.2s;
  z-index: 200;
}

.topbar-lang.open .topbar-lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.topbar-lang-item {
  display: block;
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.topbar-lang-item:hover {
  background: rgba(56,189,248,0.15);
  color: #F9FAFB;
}

.topbar-lang-item.active {
  color: var(--accent);
  font-weight: 600;
}

/* Row 2: Search + Cities + Unit toggle */
.topbar-utility {
  display: flex;
  align-items: center;
  height: 48px;
  padding: 0 24px;
  gap: 12px;
  border-bottom: 1px solid rgba(15,23,42,0.9);
}

.topbar-search {
  position: relative;
  flex-shrink: 0;
  width: 220px;
}

.topbar-search input {
  width: 100%;
  height: 34px;
  padding: 0 14px 0 36px;
  border: 1px solid rgba(148,163,184,0.45);
  border-radius: 18px;
  background: rgba(15,23,42,0.85);
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

.topbar-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56,189,248,0.5);
}

.topbar-search .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 13px;
}

/* City bar (inline in row 2) */
.city-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.city-bar::-webkit-scrollbar {
  display: none;
}

.city-chip {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 16px;
  border: 1px solid rgba(31,41,55,0.9);
  background: rgba(15,23,42,0.95);
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
  font-family: inherit;
}

.city-chip:hover {
  border-color: var(--accent);
  color: #F9FAFB;
}

.city-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #0F172A;
}

.city-chip .chip-emoji {
  font-size: 14px;
}

.unit-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(15,23,42,0.9);
  border-radius: 18px;
  padding: 2px;
  flex-shrink: 0;
}

.unit-toggle button {
  padding: 5px 12px;
  border: none;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
}

.unit-toggle button.active {
  background: var(--accent);
  color: #fff;
}

/* 顶栏登录按钮 */
.topbar-login-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 14px;
  border: 1px solid var(--border-color);
  border-radius: 18px;
  background: rgba(15,23,42,0.9);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  font-family: inherit;
  flex-shrink: 0;
}

.topbar-login-btn:hover {
  border-color: var(--accent);
  color: #F9FAFB;
  background: rgba(56,189,248,0.15);
}

.topbar-login-btn i {
  font-size: 12px;
  opacity: 0.9;
}

/* ============================================================
   Main Content (no sidebar, centered)
   ============================================================ */
.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  min-height: calc(100vh - var(--topbar-height));
}

/* ============================================================
   Cards — 3-tier system
   ============================================================ */
.card {
  background: rgba(15,23,42,0.92);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
  padding: 24px;
  transition: box-shadow 0.3s, transform 0.3s;
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
}

.card-elevated {
  background: rgba(15,23,42,0.96);
  border-radius: 14px;
  box-shadow: var(--shadow-elevated);
  border: 1px solid var(--border-subtle);
  padding: 24px;
}

.card-compact {
  background: rgba(15,23,42,0.9);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-subtle);
  padding: 16px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title .update-time {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
}

/* ============================================================
   Current Weather Hero
   ============================================================ */
.current-weather-hero {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 24px;
  padding: 0;
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: 16px;
  transition: background 0.8s ease;
  /* default: partly-cloudy */
  background: radial-gradient(circle at 0% 0%, rgba(56,189,248,0.35) 0%, transparent 55%),
              radial-gradient(circle at 80% 0%, rgba(129,140,248,0.5) 0%, transparent 55%),
              linear-gradient(135deg, #020617 0%, #020617 50%, #020617 100%);
}

.hero-atmosphere.sunny {
  background: radial-gradient(circle at 0% 0%, rgba(250,204,21,0.32) 0%, transparent 55%),
              radial-gradient(circle at 70% 0%, rgba(253,224,71,0.25) 0%, transparent 55%),
              linear-gradient(135deg, #020617 0%, #020617 50%, #020617 100%);
}

.hero-atmosphere.partly-cloudy {
  background: radial-gradient(circle at 0% 0%, rgba(56,189,248,0.25) 0%, transparent 55%),
              radial-gradient(circle at 70% 0%, rgba(129,140,248,0.25) 0%, transparent 55%),
              linear-gradient(135deg, #020617 0%, #020617 50%, #020617 100%);
}

.hero-atmosphere.cloudy,
.hero-atmosphere.overcast {
  background: linear-gradient(135deg, #0F172A 0%, #020617 60%, #020617 100%);
}

.hero-atmosphere.light-rain,
.hero-atmosphere.rain {
  background: linear-gradient(135deg, #0B1120 0%, #0F172A 40%, #020617 100%);
}

.hero-atmosphere.heavy-rain,
.hero-atmosphere.thunderstorm {
  background: linear-gradient(135deg, #020617 0%, #020617 40%, #000000 100%);
}

.hero-atmosphere.light-snow,
.hero-atmosphere.snow,
.hero-atmosphere.heavy-snow {
  background: linear-gradient(135deg, #020617 0%, #020617 50%, #0F172A 100%);
}

.hero-atmosphere.fog,
.hero-atmosphere.haze {
  background: linear-gradient(135deg, #020617 0%, #020617 50%, #020617 100%);
}

/* Hero meta row: hi/lo + sunrise/sunset, MSN-style compact strip */
.hero-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: center;
  margin: 8px 0 4px;
  font-size: 13px;
  color: var(--text-secondary);
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(15,23,42,0.9);
  border: 1px solid rgba(148,163,184,0.45);
  box-shadow: 0 4px 10px rgba(15,23,42,0.7);
}

.hero-meta-item::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}


.hero-content {
  position: relative;
  z-index: 1;
  padding: 36px 32px;
}

.hero-weather-grid {
  display: grid;
  grid-template-columns: 7fr 3fr; /* C 端 : B 端 = 7 : 3 */
  gap: 24px;
}

.hero-weather-left {
  display: flex;
  flex-direction: column;
}

.hero-location {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.hero-location .update-time {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
}

.hero-main-display {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 12px;
}

.big-temp {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 96px;
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: -3px;
}

.weather-condition {
  font-size: 22px;
  font-weight: 500;
  color: var(--text-secondary);
}

.feels-like {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 2px;
}

.weather-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 12px;
}

.metrics-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(27,42,61,0.1);
}

.metric-item {
  text-align: center;
}

.metric-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.metric-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.metric-unit {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-secondary);
}

/* AQI color coding */
.aqi-good { color: #22C55E; }
.aqi-moderate { color: #F59E0B; }
.aqi-unhealthy { color: #EF4444; }

/* Hero right: map card */
.hero-map-card {
  background: rgba(15,23,42,0.96);
  backdrop-filter: blur(12px);
  border-radius: 14px;
  padding: 20px;
  border: 1px solid rgba(148,163,184,0.6);
}

.hero-map-card .card-title {
  margin-bottom: 12px;
}

/* ============================================================
   Mini Map Card
   ============================================================ */
.mini-map-card {
  position: relative;
  overflow: hidden;
}

.mini-map-card svg {
  width: 100%;
  height: auto;
}

/* 全国概览图片（替换 SVG 时使用） */
.mini-map-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  object-fit: contain;
}

.alert-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: rgba(251,191,36,0.12);
  border-radius: 8px;
  margin-top: 16px;
  font-size: 13px;
  color: #FACC15;
}

.alert-banner i {
  color: #FACC15;
}

/* ============================================================
   Hourly Forecast
   ============================================================ */
.hourly-section .section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.view-toggle {
  display: flex;
  gap: 4px;
}

.view-toggle button {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  border-radius: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.view-toggle button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Day date capsules */
.day-capsules {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 12px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.day-capsules::-webkit-scrollbar {
  display: none;
}

.day-capsule {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border-radius: 12px;
  background: var(--bg-page);
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.2s;
  border: 1px solid transparent;
}

.day-capsule:hover {
  border-color: var(--accent);
}

.day-capsule.active {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}

.day-capsule .capsule-emoji {
  font-size: 18px;
}

.day-capsule .capsule-temps {
  font-size: 11px;
  color: var(--text-muted);
}

.day-capsule .capsule-temps .t-high {
  color: var(--temp-warm);
  font-weight: 600;
}

.day-capsule .capsule-temps .t-low {
  color: var(--temp-cool);
}

/* Hourly chart container */
.hourly-chart-wrapper {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 16px;
  margin-top: 16px;
}

.hourly-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.hourly-desc .desc-time {
  font-weight: 600;
  color: var(--text-primary);
}

.chart-scroll {
  overflow-x: auto;
  border-radius: 10px;
  background: rgba(15,23,42,0.9);
  padding: 8px;
}

/* ============================================================
   15-Day Forecast Table
   ============================================================ */
.daily-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.daily-table th {
  text-align: left;
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

.daily-table td {
  padding: 12px 12px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
  white-space: nowrap;
}

.daily-table tr:last-child td {
  border-bottom: none;
}

.daily-table tr.today-row {
  background: var(--accent-light);
}

.daily-table tr:hover {
  background: rgba(21,101,192,0.03);
}

.daily-table tr.today-row:hover {
  background: #D0E4F7;
}

.daily-table .day-condition {
  display: flex;
  align-items: center;
  gap: 6px;
}

.daily-table .temp-high {
  font-weight: 600;
  color: var(--temp-warm);
}

.daily-table .temp-low {
  font-weight: 600;
  color: var(--temp-cool);
}

/* Temperature range bar */
.temp-range-bar {
  position: relative;
  width: 100px;
  height: 6px;
  background: rgba(31,41,55,0.9);
  border-radius: 3px;
}

.temp-range-bar .bar-fill {
  position: absolute;
  top: 0;
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, #64B5F6, #FF8A65);
}

/* ============================================================
   Weather Detail Grid
   ============================================================ */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.detail-card {
  background: var(--bg-card);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
  padding: 20px;
  text-align: center;
  transition: box-shadow 0.3s, transform 0.3s;
}

.detail-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.detail-card .detail-icon {
  font-size: 24px;
  color: var(--accent);
  margin-bottom: 8px;
}

.detail-card .detail-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.detail-card .detail-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
}

.detail-card .detail-unit {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Progress bar for humidity */
.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(31,41,55,0.9);
  border-radius: 3px;
  margin-top: 12px;
  overflow: hidden;
}

.progress-bar .progress-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--accent);
  transition: width 0.6s ease-out;
}

/* UV Arc gauge */
.uv-gauge {
  position: relative;
  width: 100px;
  height: 56px;
  margin: 0 auto;
}

/* Wind compass */
.wind-compass {
  width: 80px;
  height: 80px;
  margin: 0 auto;
}

/* ============================================================
   Life Index
   ============================================================ */
.life-scroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.life-scroll::-webkit-scrollbar {
  display: none;
}

.life-card {
  min-width: 180px;
  flex-shrink: 0;
  background: rgba(15,23,42,0.96);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
  padding: 20px;
  text-align: center;
  transition: box-shadow 0.3s, transform 0.3s;
}

.life-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.life-card .life-icon {
  font-size: 32px;
  margin-bottom: 8px;
  transition: transform 0.3s;
}

.life-card:hover .life-icon {
  transform: translateY(-4px);
}

.life-card .life-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.life-card .life-level {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
}

.life-card .life-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ============================================================
   News Grid
   ============================================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.news-card {
  background: rgba(15,23,42,0.96);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s;
  cursor: pointer;
}

.news-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.news-card-img {
  width: 100%;
  height: 140px;
  background: radial-gradient(circle at 0% 0%, rgba(56,189,248,0.3) 0%, transparent 60%),
              radial-gradient(circle at 80% 0%, rgba(129,140,248,0.35) 0%, transparent 60%),
              linear-gradient(135deg, #020617 0%, #020617 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}

.news-card-body {
  padding: 16px;
}

.news-card-category {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 8px;
}

.news-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-date {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
}

/* ============================================================
   Industry Solutions Grid
   ============================================================ */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.industry-card-v4 {
  position: relative;
  min-height: 220px;
  border-radius: 14px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.industry-card-v4:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

.industry-card-v4 .industry-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.4s;
}

.industry-card-v4:hover .industry-bg {
  transform: scale(1.05);
}

.industry-card-v4 .industry-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.7) 100%);
}

.industry-card-v4 .industry-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
  padding: 24px;
  color: #fff;
}

.industry-card-v4 .industry-icon {
  font-size: 28px;
  margin-bottom: 12px;
  opacity: 0.9;
}

.industry-card-v4 .industry-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.industry-card-v4 .industry-desc {
  font-size: 13px;
  opacity: 0.85;
  line-height: 1.5;
}

/* ============================================================
   Data Platform Banner
   ============================================================ */
.data-platform-banner {
  background: linear-gradient(135deg, #1565C0, #1B2A3D);
  border-radius: 14px;
  padding: 40px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: #fff;
}

.data-platform-banner .dp-text h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 8px 0;
}

.data-platform-banner .dp-text p {
  font-size: 14px;
  opacity: 0.85;
  margin: 0;
  line-height: 1.6;
}

.data-platform-stats {
  display: flex;
  gap: 32px;
  margin-top: 20px;
}

.dp-stat {
  text-align: center;
}

.dp-stat-value {
  font-size: 24px;
  font-weight: 700;
}

.dp-stat-label {
  font-size: 12px;
  opacity: 0.75;
  margin-top: 2px;
}

.btn-enterprise {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: #fff;
  color: var(--accent);
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
  flex-shrink: 0;
  font-family: inherit;
  text-decoration: none;
}

.btn-enterprise:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

/* ============================================================
   Ad Marketing Grid
   ============================================================ */
.ad-marketing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.ad-card {
  background: rgba(15,23,42,0.96);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
  padding: 24px;
  text-align: center;
  transition: box-shadow 0.3s, transform 0.3s;
  cursor: pointer;
}

.ad-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.ad-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin: 0 auto 16px;
  transition: transform 0.3s;
}

.ad-card:hover .ad-card-icon {
  transform: translateY(-4px);
}

.ad-card-icon.blue {
  background: rgba(56,189,248,0.16);
  color: var(--accent);
}

.ad-card-icon.amber {
  background: rgba(251,191,36,0.16);
  color: #FBBF24;
}

.ad-card-icon.green {
  background: rgba(16,185,129,0.18);
  color: #6EE7B7;
}

.ad-card-icon.purple {
  background: rgba(129,140,248,0.2);
  color: #A5B4FC;
}

.ad-card .ad-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.ad-card .ad-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   Enterprise News List
   ============================================================ */
.enterprise-news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.enterprise-news-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  background: var(--bg-card);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
  padding: 20px 24px;
  transition: box-shadow 0.3s, transform 0.3s;
  cursor: pointer;
}

.enterprise-news-item:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.enterprise-news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-right: 2px solid var(--border-color);
  padding-right: 16px;
}

.enterprise-news-date .en-day {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.enterprise-news-date .en-year {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.enterprise-news-body .en-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.5;
}

.enterprise-news-body .en-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   Footer (Dark, MSN style)
   ============================================================ */
.footer {
  background: var(--bg-footer);
  border-radius: 16px 16px 0 0;
  margin-top: 48px;
  padding: 0;
  color: rgba(255,255,255,0.7);
  font-size: 13px;
}

.footer a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color 0.2s;
}

.footer a:hover {
  color: #fff;
}

.footer-grid-expanded {
  display: flex;
  gap: 48px;
  padding: 40px 32px 32px;
  flex-wrap: wrap;
}

.footer-col {
  flex: 1;
  min-width: 120px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  margin: 0 0 12px 0;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: 13px;
}

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  color: rgba(255,255,255,0.4);
  font-size: 16px;
  transition: color 0.2s;
}

.footer-social a:hover {
  color: #fff;
}

/* ============================================================
   Sub-page hero
   ============================================================ */
.subpage-hero {
  border-radius: 14px;
  padding: 36px 32px;
  color: #fff;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #1565C0 0%, #1B2A3D 100%);
}

/* Page-specific hero gradients */
.page-industry .subpage-hero {
  background: linear-gradient(135deg, #1565C0 0%, #0D47A1 100%);
}

.page-data .subpage-hero {
  background: linear-gradient(135deg, #00838F 0%, #004D40 100%);
}

.page-marketing .subpage-hero {
  background: linear-gradient(135deg, #D4793A 0%, #A0522D 100%);
}

.page-news .subpage-hero {
  background: linear-gradient(135deg, #5E35B1 0%, #311B92 100%);
}

.subpage-hero .hero-breadcrumb {
  font-size: 12px;
  opacity: 0.75;
  margin-bottom: 12px;
}

.subpage-hero .hero-breadcrumb a {
  color: #fff;
  text-decoration: none;
  opacity: 0.85;
}

.subpage-hero .hero-breadcrumb a:hover {
  opacity: 1;
}

.subpage-hero h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px 0;
}

.subpage-hero p {
  font-size: 15px;
  opacity: 0.85;
  margin: 0;
  max-width: 600px;
  line-height: 1.6;
}

/* ============================================================
   Section spacing
   ============================================================ */
.section-block {
  margin-bottom: 24px;
}

/* B 端服务入口（大气块状布局） */
.b-end-entry {
  margin-bottom: 32px;
}
.b-end-entry-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
}
.b-end-entry-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 28px 32px;
  background: linear-gradient(145deg, rgba(15,23,42,0.85) 0%, rgba(30,41,59,0.6) 100%);
  border: 1px solid rgba(148,163,184,0.2);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}
.b-end-entry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 20px;
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 14px;
  border: 1px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s, transform 0.2s;
}
.b-end-entry-item:hover {
  color: var(--accent);
  background: var(--accent-light);
  border-color: rgba(56,189,248,0.35);
  transform: translateY(-2px);
}
.b-end-entry-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(56,189,248,0.15);
  color: var(--accent);
  font-size: 1.25rem;
}
.b-end-entry-item:hover .b-end-entry-icon {
  background: rgba(56,189,248,0.25);
  color: var(--accent);
}
.b-end-entry-label {
  font-size: 1rem;
  font-weight: 600;
}
.b-end-entry-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}
.b-end-entry-item:hover .b-end-entry-desc {
  color: var(--text-secondary);
  opacity: 0.95;
}
@media (max-width: 768px) {
  .b-end-entry-card {
    grid-template-columns: 1fr;
    padding: 20px 20px;
  }
  .b-end-entry-item {
    flex-direction: row;
    justify-content: flex-start;
    padding: 16px 20px;
    gap: 16px;
  }
  .b-end-entry-item .b-end-entry-icon {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }
  .b-end-entry-item .b-end-entry-desc {
    margin-left: 0;
  }
}

/* 可折叠区块 */
.section-collapsible .section-collapse-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 0;
  margin: 0;
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
}
.section-collapsible .section-collapse-header .section-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}
.section-collapse-icon {
  flex-shrink: 0;
  margin-left: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  transition: transform 0.25s ease;
}
.section-collapsible.collapsed .section-collapse-icon {
  transform: rotate(-90deg);
}
.section-collapse-body {
  max-height: 2000px;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.section-collapsible.collapsed .section-collapse-body {
  max-height: 0;
}

/* ============================================================
   SVG Weather Icons inline
   ============================================================ */
.weather-svg-icon {
  display: inline-block;
  vertical-align: middle;
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.5s ease-out both;
}

/* Stagger children animation */
.stagger-in > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.stagger-in.animate-in > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger-in.animate-in > *:nth-child(1) { transition-delay: 0ms; }
.stagger-in.animate-in > *:nth-child(2) { transition-delay: 60ms; }
.stagger-in.animate-in > *:nth-child(3) { transition-delay: 120ms; }
.stagger-in.animate-in > *:nth-child(4) { transition-delay: 180ms; }
.stagger-in.animate-in > *:nth-child(5) { transition-delay: 240ms; }
.stagger-in.animate-in > *:nth-child(6) { transition-delay: 300ms; }

/* Temp number animation helper */
.temp-animated {
  display: inline-block;
  transition: transform 0.3s ease-out;
}

/* ============================================================
   Responsive
   ============================================================ */

/* News responsive */
@media (max-width: 1279px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .metrics-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .ad-marketing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-weather-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile: < 768 */
@media (max-width: 767px) {
  :root {
    --topbar-height: 52px;
  }

  .main-content {
    padding: 16px;
  }

  .topbar-nav {
    position: relative;
    padding: 0 16px;
    height: 52px;
    min-height: 52px;
    justify-content: flex-start;
  }

  /* 移动端汉堡：与多语言同款方框样式 */
  .topbar-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
  }

  .topbar-links {
    display: none;
    position: absolute;
    right: 16px;
    top: calc(100% + 4px);
    min-width: 160px;
    padding: 8px 0;
    background: rgba(15,23,42,0.98);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: var(--shadow-elevated);
    flex-direction: column;
    gap: 4px;
    margin: 0;
    border-top: none;
    padding: 8px 6px;
    z-index: 200;
  }

  .topbar-nav.open .topbar-links {
    display: flex;
  }

  .topbar-link {
    display: block;
    font-size: 13px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid rgba(148,163,184,0.35);
    background: rgba(15,23,42,0.6);
    justify-content: flex-start;
    flex: none;
    width: 100%;
    box-sizing: border-box;
  }

  .topbar-link:hover {
    background: rgba(56,189,248,0.15);
    border-color: rgba(148,163,184,0.5);
  }

  .topbar-link.active {
    border: 1px solid var(--accent);
    background: rgba(56,189,248,0.2);
  }

  .topbar-link.active::after {
    display: none;
  }

  .topbar-link.active::after {
    display: none;
  }

  /* 移动端只保留搜索框，隐藏热门城市和单位切换 */
  .topbar-utility {
    display: flex;
    flex-direction: row;
    align-items: center;
    flex-wrap: nowrap;
    height: auto;
    padding: 8px 16px 10px;
    gap: 10px;
    border-bottom: 1px solid rgba(15,23,42,0.9);
  }

  .topbar-search {
    flex: 1;
    min-width: 0;
  }

  .city-bar {
    display: none;
  }

  .unit-toggle {
    display: none;
  }

  .hero-content {
    padding: 24px 20px;
  }

  .hero-weather-grid {
    grid-template-columns: 1fr;
  }

  .big-temp {
    font-size: 64px;
    letter-spacing: -2px;
  }

  .metrics-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .hourly-chart-wrapper {
    grid-template-columns: 1fr;
  }

  .hourly-desc {
    display: none;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .daily-table {
    font-size: 12px;
  }

  .daily-table th,
  .daily-table td {
    padding: 8px 6px;
  }

  .section-title {
    font-size: 16px;
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .industry-grid {
    grid-template-columns: 1fr;
  }

  .data-platform-banner {
    flex-direction: column;
    text-align: center;
    padding: 24px;
  }

  .data-platform-stats {
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
  }

  .ad-marketing-grid {
    grid-template-columns: 1fr;
  }

  .enterprise-news-item {
    grid-template-columns: 60px 1fr;
    gap: 12px;
    padding: 16px;
  }

  .enterprise-news-date .en-day {
    font-size: 22px;
  }

  .footer-grid-expanded {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    padding: 24px 16px;
  }

  .footer-col {
    min-width: 0;
  }

  .footer-col h4 {
    margin-bottom: 10px;
  }

  .footer-col ul li {
    margin-bottom: 6px;
  }

  .footer-bottom-bar {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .subpage-hero {
    padding: 24px 20px;
  }

  .subpage-hero h1 {
    font-size: 22px;
  }
}

/* ============================================================
   登录弹窗（暗黑风格）
   ============================================================ */
.login-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.login-modal.login-modal-open {
  opacity: 1;
  visibility: visible;
}

.login-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2,6,23,0.75);
  backdrop-filter: blur(8px);
}

.login-dialog {
  position: relative;
  width: 100%;
  max-width: 400px;
  background: rgba(15,23,42,0.98);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-elevated);
  padding: 32px 28px;
}

.login-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}

.login-close:hover {
  color: #F9FAFB;
  background: rgba(255,255,255,0.08);
}

.login-header {
  text-align: center;
  margin-bottom: 24px;
}

.login-header-icon {
  font-size: 36px;
  color: var(--accent);
  margin-bottom: 12px;
}

.login-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px;
}

.login-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-field label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.login-field input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: rgba(15,23,42,0.9);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
  box-sizing: border-box;
}

.login-field input::placeholder {
  color: var(--text-muted);
}

.login-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56,189,248,0.4);
}

.login-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
}

.login-remember {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.login-remember input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.login-forgot {
  color: var(--accent);
  text-decoration: none;
}

.login-forgot:hover {
  text-decoration: underline;
}

.login-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.02s;
  font-family: inherit;
}

.login-submit:hover {
  background: #0EA5E9;
}

.login-submit:active {
  transform: scale(0.98);
}

.login-register {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.login-register-link {
  color: var(--accent);
  text-decoration: none;
  margin-left: 4px;
}

.login-register-link:hover {
  text-decoration: underline;
}

/* ============================================================
   Landing Page (Earth hero)
   ============================================================ */

.landing-page {
  min-height: 100vh;
  margin: 0;
  background: #000;
  color: #f9fafb;
  font-family: "DM Sans", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.landing-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  background: linear-gradient(to bottom, rgba(0,0,0,0.85), rgba(0,0,0,0.2), transparent);
  padding: 18px 48px 12px;
}

.landing-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.landing-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.landing-logo img {
  height: 26px;
  width: auto;
  display: block;
}

.landing-logo-text {
  font-family: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  letter-spacing: 0.3em;
  color: #f9fafb;
}

.landing-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
}

.landing-nav-link {
  font-size: 13px;
  color: rgba(249,250,251,0.75);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.2s ease;
}

.landing-nav-link:hover {
  color: #ffffff;
}

.landing-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: rgba(249,250,251,0.7);
}

.landing-meta-icon {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: 1px solid rgba(249,250,251,0.4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}

.landing-main {
  min-height: 100vh;
}

.landing-hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.landing-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("hero-earth.jpg");
  background-size: cover;
  background-position: center;
  transform: scale(1.02);
}

.landing-hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 40%, rgba(0,0,0,0) 0%, rgba(0,0,0,0.35) 40%, rgba(0,0,0,0.9) 100%);
}

.landing-hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 100vh;
}

.landing-hero-title {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 40px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #ffffff;
  margin: 0 0 18px;
}

.landing-hero-subtitle {
  max-width: 520px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(249,250,251,0.8);
  margin: 0 0 28px;
}

.landing-hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.landing-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, transform 0.1s ease;
}

.landing-btn-primary {
  background: #ffffff;
  color: #020617;
}

.landing-btn-primary:hover {
  background: #e5e7eb;
  transform: translateY(-1px);
}

.landing-btn-ghost {
  border: 1px solid rgba(249,250,251,0.6);
  color: #f9fafb;
  background: rgba(15,23,42,0.4);
}

.landing-btn-ghost:hover {
  background: rgba(15,23,42,0.7);
  transform: translateY(-1px);
}

.landing-summary {
  position: relative;
  z-index: 2;
  background: #000;
  padding: 40px 24px 48px;
}

.landing-summary-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.landing-summary-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 10px;
  color: rgba(249,250,251,0.85);
}

.landing-summary-text {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(148,163,184,0.95);
  margin: 0;
}

.landing-footer {
  border-top: 1px solid rgba(31,41,55,1);
  background: #000;
  padding: 16px 24px 20px;
}

.landing-footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 12px;
  color: rgba(148,163,184,0.9);
}

.landing-footer-links {
  display: flex;
  gap: 16px;
}

.landing-footer-links a {
  color: rgba(148,163,184,0.9);
  text-decoration: none;
}

.landing-footer-links a:hover {
  color: #e5e7eb;
}

@media (max-width: 900px) {
  .landing-header {
    padding: 14px 20px 8px;
  }
  .landing-header-inner {
    flex-wrap: wrap;
    gap: 12px;
  }
  .landing-nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px 20px;
  }
  .landing-hero-title {
    font-size: 30px;
    letter-spacing: 0.16em;
  }
  .landing-summary-inner {
    grid-template-columns: 1fr;
  }
  .landing-footer-inner {
    flex-direction: column;
    text-align: center;
  }
}