/* ===================================================================
   流星云 (MeteorCloud) - 基础架构与首页样式表
   阶段: 第4步 - 首页主要内容 (五大板块异构排版)
   =================================================================== */

:root {
  /* 品牌核心色彩系统 (Cyber Obsidian & Aurora Palette) */
  --bg-primary: #06080d;
  --bg-secondary: #0b0f19;
  --bg-surface: #0f1625;
  --bg-card: rgba(15, 22, 37, 0.75);
  --bg-card-hover: rgba(22, 33, 56, 0.9);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 242, 254, 0.4);
  
  --brand-cyan: #00f2fe;
  --brand-blue: #4facfe;
  --brand-purple: #8b5cf6;
  --brand-emerald: #10b981;
  --brand-amber: #f59e0b;
  
  --primary: #00f2fe;
  --primary-glow: rgba(0, 242, 254, 0.35);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #64748b;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  
  --container-max: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html, body {
  overflow-x: hidden;
  max-width: 100vw;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 移动端菜单激活时背景锁定 */
body.mobile-nav-active {
  overflow: hidden !important;
  touch-action: none;
}

/* 背景星轨与微光氛围 */
.bg-ambient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-top {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 550px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.18) 0%, rgba(79, 172, 254, 0.08) 45%, transparent 70%);
  filter: blur(90px);
}

.glow-bottom {
  position: absolute;
  bottom: 0;
  right: 5%;
  width: 650px;
  height: 450px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
  filter: blur(100px);
}

/* ===================================================================
   流星雨与小行星深空背景系统 (Meteor & Asteroid Deep Space System)
   =================================================================== */

/* 1. 星空深空微光微粒 (Twinkling Cosmic Starfield) */
.starfield {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.star-dot {
  position: absolute;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 5px #00f2fe;
  animation: starTwinkle 4s ease-in-out infinite alternate;
  pointer-events: none;
}

.s-1 { top: 8%; left: 12%; width: 2px; height: 2px; animation-delay: 0.3s; }
.s-2 { top: 18%; left: 38%; width: 2.5px; height: 2.5px; animation-delay: 1.7s; }
.s-3 { top: 12%; right: 28%; width: 1.5px; height: 1.5px; animation-delay: 2.5s; }
.s-4 { top: 32%; left: 8%; width: 2px; height: 2px; animation-delay: 0.9s; }
.s-5 { top: 45%; right: 18%; width: 3px; height: 3px; box-shadow: 0 0 7px #00f2fe; animation-delay: 1.2s; }
.s-6 { top: 68%; left: 22%; width: 2px; height: 2px; animation-delay: 2.9s; }
.s-7 { top: 75%; right: 35%; width: 2.5px; height: 2.5px; animation-delay: 0.6s; }
.s-8 { top: 88%; left: 45%; width: 1.5px; height: 1.5px; animation-delay: 3.1s; }
.s-9 { top: 25%; right: 48%; width: 2px; height: 2px; animation-delay: 1.8s; }
.s-10 { top: 58%; left: 78%; width: 2px; height: 2px; animation-delay: 2.2s; }

@keyframes starTwinkle {
  0%, 100% { opacity: 0.2; transform: scale(0.8); }
  50% { opacity: 0.95; transform: scale(1.3); }
}

/* 2. 流星系统 (Meteor Stream) */
.meteor-stream {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

.meteor {
  position: absolute;
  height: 2px;
  border-radius: 999px;
  pointer-events: none;
  background: linear-gradient(90deg, #ffffff 0%, rgba(0, 242, 254, 0.95) 20%, rgba(79, 172, 254, 0.6) 55%, transparent 100%);
  filter: drop-shadow(0 0 8px #00f2fe);
  opacity: 0;
  transform: rotate(-35deg);
  will-change: transform, opacity;
}

.meteor::before {
  content: '';
  position: absolute;
  left: 0;
  top: -2.5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 12px 3px #00f2fe, 0 0 24px 6px rgba(79, 172, 254, 0.8);
}

/* 6 组快速交叉错落流星雨 */
.meteor-1 {
  top: 3%;
  right: 18%;
  width: 180px;
  animation: meteorFly 4.2s ease-out infinite;
  animation-delay: 0.2s;
}

.meteor-2 {
  top: 14%;
  right: 8%;
  width: 220px;
  animation: meteorFly 5.1s ease-out infinite;
  animation-delay: 1.5s;
}

.meteor-3 {
  top: 26%;
  right: 32%;
  width: 150px;
  animation: meteorFly 4.6s ease-out infinite;
  animation-delay: 2.8s;
}

.meteor-4 {
  top: 6%;
  right: 52%;
  width: 200px;
  animation: meteorFly 5.8s ease-out infinite;
  animation-delay: 0.8s;
}

.meteor-5 {
  top: 38%;
  right: 15%;
  width: 160px;
  animation: meteorFly 4.9s ease-out infinite;
  animation-delay: 3.5s;
}

.meteor-6 {
  top: 20%;
  right: 70%;
  width: 170px;
  animation: meteorFly 6.2s ease-out infinite;
  animation-delay: 2.1s;
}

@keyframes meteorFly {
  0% {
    transform: translate3d(80px, -60px, 0) rotate(-35deg);
    opacity: 0;
  }
  4% {
    opacity: 1;
  }
  22% {
    transform: translate3d(-520px, 390px, 0) rotate(-35deg);
    opacity: 0;
  }
  100% {
    transform: translate3d(-520px, 390px, 0) rotate(-35deg);
    opacity: 0;
  }
}

/* 3. 小行星群与行星环 (Asteroid Field & Planetary Rings) */
.asteroid-field {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

.asteroid-item {
  position: absolute;
  pointer-events: none;
  filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.85)) drop-shadow(0 0 16px rgba(0, 242, 254, 0.35));
  opacity: 0.92;
  will-change: transform;
}

/* 主小行星 (Alpha) - 右上方带有微型光环与晶体脉络 */
.asteroid-1 {
  top: 12%;
  right: 5%;
  width: 110px;
  height: 110px;
  animation: asteroidFloat1 24s ease-in-out infinite alternate;
}

/* 伴随小行星 (Beta) - 左侧中央 */
.asteroid-2 {
  top: 50%;
  left: 3%;
  width: 85px;
  height: 85px;
  animation: asteroidFloat2 28s ease-in-out infinite alternate;
  filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.85)) drop-shadow(0 0 14px rgba(139, 92, 246, 0.35));
}

/* 远景小行星 (Gamma) - 右下方 */
.asteroid-3 {
  top: 76%;
  right: 8%;
  width: 65px;
  height: 65px;
  animation: asteroidFloat3 22s ease-in-out infinite alternate;
}

/* 微型小行星 (Delta) - 左上方高空 */
.asteroid-4 {
  top: 8%;
  left: 18%;
  width: 48px;
  height: 48px;
  animation: asteroidFloat4 20s ease-in-out infinite alternate;
  opacity: 0.85;
}

@keyframes asteroidFloat1 {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  50% {
    transform: translate3d(-18px, 16px, 0) rotate(10deg);
  }
  100% {
    transform: translate3d(-8px, -18px, 0) rotate(-8deg);
  }
}

@keyframes asteroidFloat2 {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  50% {
    transform: translate3d(16px, -18px, 0) rotate(-12deg);
  }
  100% {
    transform: translate3d(-12px, 14px, 0) rotate(8deg);
  }
}

@keyframes asteroidFloat3 {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  50% {
    transform: translate3d(12px, 14px, 0) rotate(14deg);
  }
  100% {
    transform: translate3d(-14px, -10px, 0) rotate(-10deg);
  }
}

@keyframes asteroidFloat4 {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  50% {
    transform: translate3d(10px, -12px, 0) rotate(15deg);
  }
  100% {
    transform: translate3d(-10px, 8px, 0) rotate(-12deg);
  }
}

@media (max-width: 768px) {
  .asteroid-1 { width: 68px; height: 68px; top: 11%; right: 3%; }
  .asteroid-2 { width: 52px; height: 52px; top: 58%; left: 2%; }
  .asteroid-3 { width: 40px; height: 40px; top: 82%; right: 5%; }
  .asteroid-4 { width: 32px; height: 32px; top: 6%; left: 8%; }
  .meteor { height: 1.5px; }
  .meteor-1 { width: 120px; }
  .meteor-2 { width: 140px; }
  .meteor-3 { width: 100px; }
  .meteor-4 { width: 130px; }
  .meteor-5 { width: 110px; }
  .meteor-6 { width: 120px; }
}

@media (prefers-reduced-motion: reduce) {
  .meteor,
  .asteroid-item,
  .star-dot {
    animation: none !important;
  }
  .meteor {
    display: none !important;
  }
}

/* 通用容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* 排版 */
h1, h2, h3, h4 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--text-muted);
}

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

/* 徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 9999px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--primary);
  backdrop-filter: blur(8px);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.12);
  border-color: rgba(139, 92, 246, 0.35);
  color: #a78bfa;
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.35);
  color: #34d399;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.94rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  color: #040810;
  box-shadow: 0 4px 18px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(0, 242, 254, 0.5);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

.btn-large {
  padding: 14px 32px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* ===================================================================
   1. MAINLAYOUT: 导航栏 (Navbar)
   =================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: rgba(6, 8, 13, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(6, 8, 13, 0.94);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
}

.brand-icon {
  width: 34px;
  height: 34px;
  background: #070a12;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 0 16px rgba(0, 242, 254, 0.45);
  border: 1px solid rgba(0, 242, 254, 0.3);
}

.brand-icon img,
.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.brand-icon svg {
  width: 19px;
  height: 19px;
  fill: #040810;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, #00f2fe, #4facfe);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.mobile-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* ===================================================================
   2. 移动端抽屉 (Mobile Drawer)
   =================================================================== */
.mobile-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 82%;
  max-width: 320px;
  height: 100vh;
  background: #0b101c;
  border-left: 1px solid var(--border-color);
  z-index: 1200;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.8);
  overflow-y: auto;
  overflow-x: hidden;
}

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

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 22px;
  border-bottom: 1px solid var(--border-color);
}

.drawer-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.drawer-body {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

.drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: #cbd5e1;
  font-size: 0.98rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid transparent;
}

.drawer-link:hover, .drawer-link.active {
  color: var(--primary);
  background: rgba(0, 242, 254, 0.08);
  border-color: rgba(0, 242, 254, 0.25);
}

.drawer-footer {
  padding: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ===================================================================
   3. MAINLAYOUT: 主内容区 (Main & Outlet)
   =================================================================== */
.main-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.outlet-container {
  flex: 1;
  padding-top: 105px;
  padding-bottom: 80px;
  min-height: calc(100vh - 460px);
}

/* ===================================================================
   4. 首页 Hero 独立架构与样式
   =================================================================== */
.hero-wrapper {
  padding: 30px 0 60px 0;
  position: relative;
}

.hero-layout-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-left-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.hero-kicker-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 9999px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.28);
  color: var(--primary);
  margin-bottom: 22px;
}

.hero-main-title {
  font-size: 3.15rem;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.025em;
  margin-bottom: 20px;
  color: #ffffff;
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 25%, #00f2fe 70%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead-text {
  font-size: 1.1rem;
  line-height: 1.75;
  color: #94a3b8;
  margin-bottom: 34px;
  max-width: 600px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 38px;
  width: 100%;
}

.hero-usps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 18px;
  width: 100%;
  max-width: 600px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-usp-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: #cbd5e1;
}

.hero-usp-icon {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: rgba(0, 242, 254, 0.12);
  border: 1px solid rgba(0, 242, 254, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.hero-usp-icon svg {
  width: 12px;
  height: 12px;
}

/* 右侧独立品牌视觉组件 */
.meteor-visual-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 100%;
}

.meteor-visual-artifact {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(15, 25, 45, 0.6) 0%, rgba(6, 9, 15, 0.9) 80%);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.corner-cross {
  position: absolute;
  color: rgba(0, 242, 254, 0.3);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1;
  pointer-events: none;
}
.corner-tl { top: 12px; left: 12px; }
.corner-tr { top: 12px; right: 12px; }
.corner-bl { bottom: 12px; left: 12px; }
.corner-br { bottom: 12px; right: 12px; }

.artifact-meta-header, .artifact-meta-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-sub);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 2;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 4px;
  color: #94a3b8;
}

.meta-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand-cyan);
}

.artifact-svg-wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 78%;
  height: 78%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.artifact-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* 动画系统 (限制 2 处，周期 >= 8s) */
.meteor-orbit-ring {
  transform-origin: 200px 200px;
  animation: orbitDrift 14s ease-in-out infinite alternate;
}

@keyframes orbitDrift {
  0% { transform: rotate(0deg) scale(0.98); }
  100% { transform: rotate(18deg) scale(1.02); }
}

.meteor-pulse-beam {
  animation: beamBreathe 8.5s ease-in-out infinite alternate;
}

@keyframes beamBreathe {
  0% {
    opacity: 0.65;
    filter: drop-shadow(0 0 6px rgba(0, 242, 254, 0.4));
  }
  100% {
    opacity: 1;
    filter: drop-shadow(0 0 18px rgba(0, 242, 254, 0.85));
  }
}

@media (prefers-reduced-motion: reduce) {
  .meteor-orbit-ring,
  .meteor-pulse-beam {
    animation: none !important;
    transform: none !important;
  }
}

/* ===================================================================
   5. 【第4步核心】首页主要内容区五大异构板块样式
   各板块采用完全不同的排版布局结构，拒绝清一色三列卡片
   =================================================================== */

/* 板块通用头部 */
.content-section {
  padding: 70px 0;
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 48px auto;
}

.section-head h2 {
  font-size: 2.15rem;
  letter-spacing: -0.02em;
  margin: 14px 0 10px 0;
}

.section-head p {
  font-size: 1rem;
  color: var(--text-muted);
}

.section-footer-action {
  text-align: center;
  margin-top: 40px;
}

/* -------------------------------------------------------------------
   板块 1: 服务介绍 -> 非对称 Bento Grid 布局 (左宽主推 + 右双垂直堆叠)
   ------------------------------------------------------------------- */
.services-bento-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: stretch;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bento-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
}

.bento-card-main {
  background: linear-gradient(135deg, rgba(16, 26, 46, 0.85) 0%, rgba(9, 14, 25, 0.95) 100%);
  border-color: rgba(0, 242, 254, 0.25);
}

.bento-header {
  margin-bottom: 24px;
}

.bento-header h3 {
  font-size: 1.45rem;
  margin: 12px 0 10px 0;
  color: #fff;
}

.bento-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}

.bento-feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.92rem;
  color: #cbd5e1;
}

.bento-feature-list svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 3px;
}

.bento-side-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.bento-card-sub {
  flex: 1;
  padding: 28px;
}

.bento-card-sub h3 {
  font-size: 1.25rem;
  margin: 10px 0 8px 0;
  color: #fff;
}

.bento-card-sub p {
  font-size: 0.9rem;
  line-height: 1.6;
}

/* -------------------------------------------------------------------
   板块 2: 核心优势 -> 4 列横向渐进阶梯网格 (01, 02, 03, 04 带技术标尺)
   ------------------------------------------------------------------- */
.advantages-step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.adv-step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.adv-step-card:hover {
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.adv-step-num {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.08);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.05em;
  transition: var(--transition);
}

.adv-step-card:hover .adv-step-num {
  color: var(--primary);
  opacity: 0.4;
}

.adv-step-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: #ffffff;
}

.adv-step-card p {
  font-size: 0.88rem;
  line-height: 1.65;
}

.adv-tag-bottom {
  margin-top: 20px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brand-cyan);
}

/* -------------------------------------------------------------------
   板块 3: 使用流程 -> 3 阶段横向导轨流水线 (真实如实描述，无虚假本站支付/账户)
   ------------------------------------------------------------------- */
.process-pipeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}

.process-step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.process-step-card:hover {
  border-color: rgba(0, 242, 254, 0.35);
  background: var(--bg-card-hover);
}

.process-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0, 242, 254, 0.1);
  padding: 4px 12px;
  border-radius: 9999px;
  margin-bottom: 18px;
  width: fit-content;
  border: 1px solid rgba(0, 242, 254, 0.25);
}

.process-step-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: #fff;
}

.process-step-card p {
  font-size: 0.92rem;
  line-height: 1.7;
}

.process-note {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--text-sub);
  background: rgba(255, 255, 255, 0.02);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--primary);
}

/* -------------------------------------------------------------------
   板块 4: 使用场景 -> 2x2 深度场景矩阵 (带技术分类标签组)
   ------------------------------------------------------------------- */
.scenarios-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.scenario-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.scenario-box:hover {
  border-color: rgba(0, 242, 254, 0.35);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.scenario-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.scenario-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.scenario-icon svg {
  width: 22px;
  height: 22px;
}

.scenario-header h3 {
  font-size: 1.25rem;
  color: #fff;
}

.scenario-box p {
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.scenario-tag {
  font-size: 0.78rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 10px;
  border-radius: 4px;
  color: #cbd5e1;
}

/* -------------------------------------------------------------------
   板块 5: 全球线路或服务范围 -> 4 大区域覆盖展牌 + 统一声明条
   ------------------------------------------------------------------- */
.regions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.region-scope-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  transition: var(--transition);
}

.region-scope-card:hover {
  border-color: rgba(0, 242, 254, 0.3);
  background: var(--bg-card-hover);
}

.region-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.region-hubs {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.65;
  margin-bottom: 14px;
}

.region-prop {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brand-emerald);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 规范统一声明条 (无虚构节点参数，客观标注) */
.scope-disclaimer-box {
  background: rgba(0, 242, 254, 0.04);
  border: 1px dashed rgba(0, 242, 254, 0.35);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 10px;
}

.disclaimer-text {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: #cbd5e1;
}

.disclaimer-icon {
  color: var(--brand-amber);
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ===================================================================
   6. MAINLAYOUT: 真实四栏页脚
   =================================================================== */
.footer {
  background: #04060a;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 64px 0 32px 0;
  position: relative;
  width: 100%;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-col-brand .brand-logo {
  margin-bottom: 16px;
}

.footer-col-brand .brand-slogan {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 20px;
  max-width: 320px;
}

.footer-trust-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.trust-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 6px;
  color: #cbd5e1;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links li a {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.footer-links li a:hover {
  color: var(--primary);
  transform: translateX(2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copyright {
  font-size: 0.82rem;
  color: var(--text-sub);
}

.footer-extra-links {
  display: flex;
  gap: 20px;
  font-size: 0.82rem;
  color: var(--text-sub);
}

.footer-extra-links a:hover {
  color: var(--text-muted);
}

/* ===================================================================
   7. 占位组件容器
   =================================================================== */
.placeholder-view {
  max-width: 960px;
  margin: 0 auto;
}

.view-header {
  text-align: center;
  margin-bottom: 40px;
}

.view-header h1 {
  font-size: 2.6rem;
  margin: 16px 0 12px 0;
  letter-spacing: -0.02em;
}

.view-header .view-desc {
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto;
  color: var(--text-muted);
}

.placeholder-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.placeholder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.placeholder-item {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}

.placeholder-item:hover {
  border-color: var(--border-highlight);
  background: rgba(255, 255, 255, 0.05);
}

.placeholder-item h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: #fff;
}

.placeholder-item p {
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===================================================================
   7. STEP 5: 订阅套餐 (PRICING SECTION & PAGE)
   =================================================================== */
.pricing-component-wrapper {
  width: 100%;
}

.pricing-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.pricing-tab-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-sub);
  padding: 8px 18px;
  border-radius: 9999px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
}

.pricing-tab-btn:hover {
  background: rgba(0, 242, 254, 0.08);
  border-color: rgba(0, 242, 254, 0.35);
  color: #fff;
}

.pricing-tab-btn.active {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 16px rgba(0, 242, 254, 0.2);
}

.pricing-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  border-color: rgba(0, 242, 254, 0.45);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.pricing-card-featured {
  border-color: rgba(0, 242, 254, 0.5);
  background: linear-gradient(180deg, rgba(0, 242, 254, 0.06) 0%, rgba(11, 16, 29, 0.9) 100%);
  box-shadow: 0 8px 28px rgba(0, 242, 254, 0.12);
}

.pricing-card-top {
  margin-bottom: 20px;
}

.pricing-card-badge-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.pricing-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
}

.pricing-badge-highlight {
  background: rgba(0, 242, 254, 0.15);
  border-color: rgba(0, 242, 254, 0.45);
  color: var(--primary);
}

.pricing-badge-purple {
  background: rgba(139, 92, 246, 0.15);
  border-color: rgba(139, 92, 246, 0.45);
  color: #c084fc;
}

.pricing-plan-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.35;
}

.pricing-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 12px;
}

.pricing-currency {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
}

.pricing-amount {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
  letter-spacing: -0.03em;
}

.pricing-period {
  font-size: 0.85rem;
  color: var(--text-sub);
  margin-left: 4px;
}

.pricing-traffic-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 6px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--brand-cyan);
  border: 1px solid rgba(0, 242, 254, 0.25);
  margin-bottom: 14px;
}

.pricing-plan-summary {
  font-size: 0.86rem;
  color: #94a3b8;
  line-height: 1.6;
  margin-bottom: 20px;
  min-height: 40px;
}

.pricing-feature-list {
  list-style: none;
  margin: 0 0 24px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pricing-feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.86rem;
  color: #cbd5e1;
  line-height: 1.5;
}

.pricing-feature-list svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-action-wrap {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.pricing-action-wrap .btn {
  width: 100%;
  justify-content: center;
  font-size: 0.92rem;
}

/* 价格透明度声明盒 */
.pricing-transparency-card {
  background: rgba(139, 92, 246, 0.05);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-top: 36px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.pricing-transparency-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.pricing-transparency-content h4 {
  font-size: 1.05rem;
  color: #e2e8f0;
  margin-bottom: 6px;
}

.pricing-transparency-content p {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.6;
  margin: 0;
}

/* 4 维度选型决策指南 */
.pricing-guide-block {
  margin-top: 40px;
}

.pricing-guide-head {
  text-align: center;
  margin-bottom: 24px;
}

.pricing-guide-head h3 {
  font-size: 1.45rem;
  color: #fff;
  margin-bottom: 8px;
}

.pricing-guide-head p {
  font-size: 0.9rem;
  color: var(--text-sub);
}

.pricing-guide-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.pricing-guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.pricing-guide-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.pricing-guide-card-head h4 {
  font-size: 1.1rem;
  color: #fff;
}

.pricing-guide-card-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  background: rgba(0, 242, 254, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
}

.pricing-guide-card-desc {
  font-size: 0.86rem;
  color: var(--text-sub);
  margin-bottom: 14px;
  line-height: 1.5;
}

.pricing-guide-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pricing-guide-list li {
  font-size: 0.85rem;
  color: #cbd5e1;
  line-height: 1.55;
  padding-left: 14px;
  position: relative;
}

.pricing-guide-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* ===================================================================
   STEP 5: 方案选择指南网格与卡片 (PLAN SELECTION GUIDE CARDS)
   =================================================================== */
.pricing-guide-plans-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.pricing-guide-plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.pricing-guide-plan-card:hover {
  border-color: rgba(0, 242, 254, 0.45);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.pricing-guide-plan-card-featured {
  border-color: rgba(0, 242, 254, 0.5);
  background: linear-gradient(180deg, rgba(0, 242, 254, 0.08) 0%, rgba(11, 16, 29, 0.95) 100%);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.15);
}

.plan-card-header {
  margin-bottom: 16px;
}

.plan-card-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.plan-card-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
}

.plan-card-badge.badge-featured {
  background: rgba(0, 242, 254, 0.15);
  border-color: rgba(0, 242, 254, 0.45);
  color: var(--primary);
}

.plan-card-tag-glow {
  font-size: 0.75rem;
  color: #fbbf24;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.plan-card-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.35;
}

.plan-card-summary {
  font-size: 0.84rem;
  color: #94a3b8;
  line-height: 1.55;
  margin-bottom: 12px;
  min-height: 40px;
}

.plan-spec-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 242, 254, 0.04);
  border: 1px dashed rgba(0, 242, 254, 0.25);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 18px;
}

.plan-spec-status-bar .spec-label {
  font-size: 0.78rem;
  color: #94a3b8;
}

.plan-spec-status-bar .spec-value {
  font-size: 0.82rem;
  color: var(--primary);
  font-weight: 600;
  font-family: var(--font-mono);
}

.plan-dimensions-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 12px;
}

.plan-dimension-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.82rem;
  line-height: 1.45;
}

.plan-dimension-row .dim-icon {
  flex-shrink: 0;
  font-size: 0.92rem;
  margin-top: 1px;
}

.plan-dimension-row .dim-content {
  flex: 1;
}

.plan-dimension-row .dim-label {
  color: #e2e8f0;
  font-weight: 600;
}

.plan-dimension-row .dim-val {
  color: #cbd5e1;
}

.plan-features-block {
  margin-bottom: 20px;
}

.plan-features-block .features-head {
  font-size: 0.78rem;
  font-weight: 600;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.plan-features-block .features-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.plan-features-block .features-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.82rem;
  color: #cbd5e1;
  line-height: 1.4;
}

.plan-features-block .features-list svg {
  width: 15px;
  height: 15px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.plan-cta-action {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.plan-cta-action .btn {
  width: 100%;
  justify-content: center;
  font-size: 0.88rem;
  padding: 10px 14px;
}

.pricing-fullpage-view {
  padding: 10px 0 60px 0;
}

/* ===================================================================
   9. STEP 6: 场景体验走马灯 (SCENARIOS CAROUSEL)
   =================================================================== */
.scenarios-carousel-container {
  position: relative;
  width: 100%;
  margin-top: 24px;
}

.carousel-viewport {
  overflow: hidden;
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  padding: 8px 0;
  user-select: none;
  touch-action: pan-y;
}

.carousel-track {
  display: flex;
  transition: transform 0.45s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: transform;
}

.carousel-slide {
  flex: 0 0 calc(100% / 3);
  max-width: calc(100% / 3);
  padding: 0 12px;
  box-sizing: border-box;
}

.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.scenario-card:hover {
  border-color: rgba(0, 242, 254, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.scenario-card-header {
  margin-bottom: 14px;
}

.scenario-tag-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  padding: 3px 10px;
  border-radius: 9999px;
  margin-bottom: 12px;
}

.scenario-card-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin: 0;
}

.scenario-card-desc {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.7;
  margin: 12px 0 20px 0;
  flex-grow: 1;
}

.scenario-card-footer {
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 6px;
}

.scenario-card-footer svg {
  width: 14px;
  height: 14px;
  color: var(--brand-emerald);
  flex-shrink: 0;
}

/* 走马灯控制器与指示点 */
.carousel-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  padding: 0 8px;
}

.carousel-nav-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.carousel-nav-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.carousel-nav-btn:hover {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--primary);
  color: var(--primary);
}

.carousel-nav-btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.carousel-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: var(--transition);
}

.carousel-dot.active {
  width: 26px;
  border-radius: 9999px;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
}

.carousel-dot:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* 场景声明标注 */
.scenarios-disclaimer-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  margin-top: 28px;
  text-align: center;
  font-size: 0.84rem;
  color: #94a3b8;
}

/* ===================================================================
   10. STEP 6: 常见问题解答 (FAQ ACCORDION)
   =================================================================== */
.faq-accordion-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 960px;
  margin: 32px auto 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(0, 242, 254, 0.35);
  background: var(--bg-card-hover);
}

.faq-item[open] {
  border-color: rgba(0, 242, 254, 0.45);
  background: rgba(11, 16, 29, 0.85);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: var(--transition);
}

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

.faq-question:hover {
  color: var(--primary);
}

.faq-question:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

.faq-chevron {
  width: 20px;
  height: 20px;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-chevron svg {
  width: 18px;
  height: 18px;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px 24px;
  font-size: 0.92rem;
  color: #94a3b8;
  line-height: 1.7;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.faq-answer p {
  margin: 12px 0 8px 0;
}

.faq-answer ul, .faq-answer ol {
  margin: 8px 0 12px 20px;
  padding: 0;
}

.faq-answer li {
  margin-bottom: 6px;
}

.faq-answer li strong {
  color: #e2e8f0;
}

.faq-note {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(0, 242, 254, 0.05);
  border-left: 2px solid var(--primary);
  color: #cbd5e1;
  font-size: 0.85rem;
}

.faq-footer-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
  flex-wrap: wrap;
}

/* ===================================================================
   11. STEP 7: 业务内页通用样式 (/services, /advantages, /locations)
   =================================================================== */
.inner-page-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 10px 0 60px 0;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-sub);
  margin-bottom: 28px;
}

.breadcrumbs a {
  color: var(--text-muted);
  transition: var(--transition);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--primary);
}

.bc-sep {
  color: rgba(255, 255, 255, 0.2);
  font-size: 0.8rem;
}

.bc-current {
  color: var(--primary);
  font-weight: 500;
}

.inner-page-header {
  margin-bottom: 48px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 36px;
}

.inner-page-header h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin: 14px 0;
  line-height: 1.3;
}

.inner-lead-text {
  font-size: 1.05rem;
  color: #94a3b8;
  line-height: 1.7;
  max-width: 820px;
}

.inner-content-block {
  margin-bottom: 56px;
}

.inner-block-head {
  margin-bottom: 24px;
}

.inner-block-head h2 {
  font-size: 1.55rem;
  color: #fff;
  margin-bottom: 8px;
}

.inner-block-head p {
  font-size: 0.92rem;
  color: var(--text-sub);
}

.inner-grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.inner-grid-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.inner-grid-4col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.inner-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.inner-card:hover {
  border-color: rgba(0, 242, 254, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.inner-card-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 9999px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.25);
  display: inline-block;
  margin-bottom: 12px;
  width: fit-content;
}

.inner-card h3 {
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 10px;
}

.inner-card p {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.65;
  margin: 0;
}

.inner-card-meta {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #cbd5e1;
}

/* 站内 CTA 横幅 */
.inner-cta-banner {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  margin-top: 50px;
}

.inner-cta-banner h3 {
  font-size: 1.6rem;
  color: #fff;
  margin-bottom: 10px;
}

.inner-cta-banner p {
  font-size: 0.95rem;
  color: #94a3b8;
  max-width: 620px;
  margin: 0 auto 24px auto;
  line-height: 1.6;
}

.inner-cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 规范免责声明高亮框 */
.inner-disclaimer-card {
  background: rgba(245, 158, 11, 0.06);
  border: 1px dashed rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.inner-disclaimer-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.inner-disclaimer-body h4 {
  font-size: 1rem;
  color: #fbbf24;
  margin-bottom: 6px;
}

.inner-disclaimer-body p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin: 0;
}

/* ===================================================================
   12. STEP 8: 帮助、下载与联系页面样式 (/help, /downloads, /contact)
   =================================================================== */
/* 帮助中心搜索与分类 */
.help-search-container {
  max-width: 760px;
  margin: 0 auto 36px auto;
  position: relative;
}

.help-search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.help-search-icon {
  position: absolute;
  left: 20px;
  width: 20px;
  height: 20px;
  color: var(--primary);
  pointer-events: none;
}

.help-search-input {
  width: 100%;
  padding: 16px 20px 16px 52px;
  font-size: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: #fff;
  transition: var(--transition);
  font-family: inherit;
}

.help-search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.2);
}

.help-categories-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.help-cat-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-sub);
  padding: 8px 16px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
}

.help-cat-pill:hover {
  background: rgba(0, 242, 254, 0.08);
  border-color: rgba(0, 242, 254, 0.3);
  color: #fff;
}

.help-cat-pill.active {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 14px rgba(0, 242, 254, 0.2);
}

.help-articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.help-article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.help-article-card:hover {
  border-color: rgba(0, 242, 254, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.help-card-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 9999px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.25);
  display: inline-block;
  margin-bottom: 12px;
  width: fit-content;
}

.help-article-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.4;
}

.help-article-card p {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.65;
  margin-bottom: 18px;
  flex-grow: 1;
}

.help-card-meta {
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.help-empty-state {
  text-align: center;
  padding: 60px 20px;
  color: #94a3b8;
  grid-column: 1 / -1;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
}

/* 下载平台专属卡片样式 */
.downloads-platform-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.platform-download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.platform-download-card:hover {
  border-color: rgba(0, 242, 254, 0.45);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.platform-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.platform-icon-circle {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.platform-header-text h3 {
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 4px;
}

.platform-header-text span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-sub);
}

.platform-clients-box {
  margin-bottom: 20px;
}

.platform-clients-box h4 {
  font-size: 0.92rem;
  color: var(--primary);
  margin-bottom: 10px;
  font-family: var(--font-mono);
}

.platform-chips-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.platform-chip {
  font-size: 0.82rem;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  color: #cbd5e1;
}

.platform-guide-steps {
  list-style: none;
  padding: 0;
  margin: 0 0 24px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.platform-guide-steps li {
  font-size: 0.86rem;
  color: #94a3b8;
  line-height: 1.55;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.platform-step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0, 242, 254, 0.1);
  border-radius: 4px;
  padding: 1px 6px;
  flex-shrink: 0;
  margin-top: 2px;
}

.platform-action-wrap {
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.platform-action-wrap .btn {
  width: 100%;
  justify-content: center;
}

/* 联系我们专属卡片样式 */
.contact-channels-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.contact-channel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.contact-channel-card:hover {
  border-color: rgba(0, 242, 254, 0.45);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.contact-channel-top {
  margin-bottom: 24px;
}

.contact-badge-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.contact-badge-pill {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 9999px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.25);
}

.contact-badge-purple {
  background: rgba(139, 92, 246, 0.1);
  color: #c084fc;
  border-color: rgba(139, 92, 246, 0.25);
}

.contact-channel-card h3 {
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 12px;
}

.contact-channel-card p {
  font-size: 0.92rem;
  color: #94a3b8;
  line-height: 1.7;
  margin-bottom: 18px;
}

.contact-features-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-features-list li {
  font-size: 0.88rem;
  color: #cbd5e1;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.contact-features-list svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 3px;
}

.contact-action-footer {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.contact-action-footer .btn {
  width: 100%;
  justify-content: center;
}

/* ===================================================================
   【第9步核心】法律条款、隐私政策与 404 页面样式规范
   =================================================================== */
.legal-document-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  margin-bottom: 40px;
}

.legal-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.legal-section {
  margin-bottom: 38px;
}

.legal-section:last-child {
  margin-bottom: 0;
}

.legal-section h2 {
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.legal-section h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  background: var(--primary);
  border-radius: 2px;
}

.legal-section p {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.85;
  margin-bottom: 14px;
}

.legal-section ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.legal-section li {
  font-size: 0.93rem;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 8px;
  list-style-type: disc;
}

.legal-callout-box {
  background: rgba(0, 242, 254, 0.04);
  border: 1px solid rgba(0, 242, 254, 0.2);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 20px 0;
}

.legal-callout-box.neutral {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.legal-callout-box h4 {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.legal-callout-box p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.legal-audit-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.9rem;
}

.legal-audit-table th,
.legal-audit-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.legal-audit-table th {
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-weight: 600;
  font-family: var(--font-mono);
}

.legal-audit-table td {
  color: var(--text-sub);
}

.legal-audit-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font-mono);
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* 404 独立模块规范样式 */
.error-404-container {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px 24px;
}

.error-404-box {
  text-align: center;
  max-width: 680px;
  width: 100%;
  margin: 0 auto;
  padding: 64px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

.error-404-glitch {
  font-size: 6rem;
  font-weight: 800;
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 20%, var(--primary) 70%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -2px;
}

.error-404-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.error-404-desc {
  font-size: 0.98rem;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.error-404-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===================================================================
   8. 多端响应式断点适配
   =================================================================== */
@media (max-width: 1200px) {
  .hero-main-title {
    font-size: 2.85rem;
  }
  .hero-layout-grid {
    gap: 36px;
  }
}

@media (max-width: 1024px) {
  .hero-layout-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-left-col {
    align-items: center;
    text-align: center;
  }

  .hero-lead-text {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-usps-grid {
    margin-left: auto;
    margin-right: auto;
  }

  .meteor-visual-artifact {
    max-width: 420px;
  }

  /* 板块响应式降级 */
  .services-bento-grid {
    grid-template-columns: 1fr;
  }

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

  .process-pipeline {
    grid-template-columns: 1fr;
  }

  .scenarios-matrix {
    grid-template-columns: 1fr;
  }

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

  .pricing-cards-grid,
  .pricing-guide-plans-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-guide-grid {
    grid-template-columns: 1fr;
  }

  .carousel-slide {
    flex: 0 0 50%;
    max-width: 50%;
    padding: 0 10px;
  }

  .inner-grid-3col, .inner-grid-4col {
    grid-template-columns: repeat(2, 1fr);
  }

  .downloads-platform-grid, .contact-channels-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .nav-menu, .nav-actions {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .outlet-container {
    padding-top: 85px;
    padding-bottom: 40px;
  }
  
  .hero-wrapper {
    padding: 16px 0 24px 0;
  }

  .hero-main-title {
    font-size: 2.15rem;
  }

  .hero-lead-text {
    font-size: 0.98rem;
    line-height: 1.65;
    margin-bottom: 26px;
  }

  .hero-cta-group {
    flex-direction: column;
    gap: 12px;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .hero-usps-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .meteor-visual-artifact {
    max-width: 320px;
    padding: 16px;
  }

  .content-section {
    padding: 50px 0;
  }

  .section-head h2 {
    font-size: 1.8rem;
  }

  .advantages-step-grid {
    grid-template-columns: 1fr;
  }

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

  .scope-disclaimer-box {
    flex-direction: column;
    align-items: flex-start;
  }

  .pricing-cards-grid,
  .pricing-guide-plans-grid {
    grid-template-columns: 1fr;
  }

  .pricing-guide-plan-card {
    padding: 22px 18px;
  }

  .pricing-filter-bar {
    gap: 8px;
  }

  .pricing-tab-btn {
    font-size: 0.8rem;
    padding: 6px 14px;
  }

  .pricing-transparency-card {
    flex-direction: column;
    text-align: left;
    align-items: flex-start;
  }

  .pricing-card {
    padding: 24px 20px;
  }

  .carousel-slide {
    flex: 0 0 100%;
    max-width: 100%;
    padding: 0 6px;
  }

  .faq-question {
    padding: 16px 18px;
    font-size: 0.96rem;
  }

  .faq-answer {
    padding: 0 18px 18px 18px;
    font-size: 0.88rem;
  }

  .faq-footer-action {
    flex-direction: column;
    width: 100%;
  }

  .faq-footer-action .btn {
    width: 100%;
    justify-content: center;
  }

  .inner-page-header h1 {
    font-size: 1.85rem;
  }

  .inner-grid-2col, .inner-grid-3col, .inner-grid-4col {
    grid-template-columns: 1fr;
  }

  .help-articles-grid {
    grid-template-columns: 1fr;
  }

  .legal-document-card {
    padding: 28px 20px;
  }

  .legal-meta-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .error-404-box {
    padding: 44px 20px;
  }

  .error-404-glitch {
    font-size: 4.5rem;
  }

  .error-404-actions {
    flex-direction: column;
    width: 100%;
  }

  .error-404-actions .btn {
    width: 100%;
  }

  .inner-cta-banner {
    padding: 28px 20px;
  }

  .inner-cta-actions {
    flex-direction: column;
    width: 100%;
  }

  .inner-cta-actions .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .carousel-track {
    transition: none !important;
  }
}