/* ===================================================================
   DEEPSEEK AERIAL CLOUD FINAL - 云海航拍 · 垂直云缝 · 纯黑信息条
   设计哲学：
   - 云海航拍：垂直向下（Nadir View）的纯粹摄影级俯瞰视野，翻涌的厚积云与层云。
   - 垂直云层缝隙：厚云中纵向撕裂开一道垂直裂谷（Cloud Rift），深处露出幽邃深色海。
   - 网页版入口就是云缝：云缝既是自然地貌奇观，也是通往深潜推理世界的实体交互入口。
   - DeepSeek 字标放在画面外的黑色信息条，不压在云上：
     画面上方与下方配置高精密度的纯黑外框信息条（External Black Telemetry Bar），
     品牌字标、航测高度标尺与经纬度数据严整排列在黑条之中，绝不遮挡自然航拍视野。
   - 极简、写实、崇高、杜绝任何廉价 AI 渐变味。
=================================================================== */

:root {
  /* 航拍海天与黑匣子色谱 */
  --black-chassis: #000000;         /* 绝对纯黑信息条 */
  --black-sub: #080B0E;             /* 测控台板岩黑 */
  --black-surface: #0E1318;         /* 数据容器底色 */
  --border-black-bar: #1A222B;      /* 信息条精细分割线 */
  --border-subtle: rgba(255, 255, 255, 0.12);

  /* 深色海矿物质感 (从云缝中透出) */
  --deep-ocean-abyss: #03080E;      /* 深渊海沟极黑 */
  --deep-ocean-indigo: #071626;     /* 墨蓝深海涌流 */
  --deep-ocean-teal: #0D283E;       /* 迎光海面深青 */
  --ocean-bioluminescence: #38BDF8; /* 深海发光浮游/声呐磷光 */

  /* 云海气溶胶与高积云层 */
  --cloud-pure-white: #FFFFFF;      /* 云顶强日光反射 */
  --cloud-mist: #E2E8F0;           /* 卷云柔白 */
  --cloud-shadow: #7F92A3;         /* 云隙阴影灰 */
  --cloud-ridge: #B4C4D1;          /* 云脊中阶灰 */

  /* 文本与标签阶度 */
  --text-pure: #F8FAFC;
  --text-mist: #CBD5E1;
  --text-muted: #64748B;
  --text-cyan-hud: #7DD3FC;

  /* 字体族 */
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Menlo, Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-serif: "Songti SC", "SimSun", "Noto Serif CJK SC", STSong, Georgia, serif;

  /* 结构尺寸 */
  --nav-height: 50px;
  --max-width: 1240px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--black-chassis);
  color: var(--text-pure);
}

body {
  font-family: var(--font-sans);
  background-color: var(--black-chassis);
  line-height: 1.65;
  color: var(--text-pure);
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* 航拍摄影深色大气背景微底 */
.aerial-universe-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -10;
  pointer-events: none;
  background: radial-gradient(circle at 50% 30%, #08111A 0%, #030609 70%, #000000 100%);
}

/* 1. 紧凑导航栏 (始终吸顶，矮导航，不抢主视觉) */
.aerial-nav-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-black-bar);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-container {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-pure);
}

.brand-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  border-radius: 4px;
}

.brand-title-wrap {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.15em;
  color: #FFFFFF;
  line-height: 1.2;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 1.8rem;
}

.nav-links a {
  color: var(--text-mist);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: #FFFFFF;
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--ocean-bioluminescence);
  box-shadow: 0 0 8px var(--ocean-bioluminescence);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.btn-nav-rift {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: #0A1926;
  color: var(--text-cyan-hud);
  text-decoration: none;
  padding: 0.38rem 0.95rem;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(56, 189, 248, 0.35);
  transition: all 0.25s ease;
}

.btn-nav-rift:hover {
  background: #0E293F;
  border-color: rgba(56, 189, 248, 0.7);
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.25);
  color: #FFFFFF;
}

/* 页面主要视界容器 */
.aerial-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* 2. Hero 价值宣称与垂直云缝航拍画卷 (核心设计理念落地) */
.hero-aerial-section {
  padding-top: calc(var(--nav-height) + 2rem);
  padding-bottom: 3.5rem;
}

/* 画面外的顶置黑色信息条 (DeepSeek 字标放在画面外的黑色信息条，不压在云上) */
.telemetry-black-bar-top {
  background: var(--black-chassis);
  border: 1px solid var(--border-black-bar);
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  padding: 1rem 1.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.telemetry-brand-block {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

/* DeepSeek 字标放在画面外的黑色信息条 */
.telemetry-wordmark {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.telemetry-wordmark::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ocean-bioluminescence);
  box-shadow: 0 0 8px var(--ocean-bioluminescence);
}

.telemetry-badge-chassis {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 0.2rem 0.6rem;
  background: #0A131A;
  color: var(--text-cyan-hud);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 2px;
  letter-spacing: 0.08em;
}

.telemetry-coords-block {
  display: flex;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.telemetry-coords-block span strong {
  color: var(--text-mist);
  font-weight: 500;
}

/* 航拍摄影画框：垂直向下的云层缝隙，露出深色海 (画面内完全纯粹无任何压字干扰) */
.aerial-viewport-frame {
  position: relative;
  width: 100%;
  height: 540px;
  border: 1px solid var(--border-black-bar);
  overflow: hidden;
  background-color: var(--deep-ocean-abyss);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
}

/* 底层：露出的深色海 (Dark Ocean Floor) */
.abyssal-ocean-floor {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 50% 50%, #071D2F 0%, #040D17 45%, #02060A 80%),
    linear-gradient(180deg, #02070D 0%, #061826 50%, #02070D 100%);
  z-index: 1;
}

/* 深海流纹与声呐脉冲波 */
.abyssal-ocean-floor::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    180deg,
    transparent 0,
    transparent 40px,
    rgba(56, 189, 248, 0.03) 41px,
    transparent 42px
  );
  opacity: 0.8;
}

/* 摄影级云海图层：合理调用 2.webp 作为实景航拍高空云海基础 */
.aerial-cloud-strata {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: contrast(1.15) brightness(0.95);
  z-index: 2;
  mix-blend-mode: luminosity;
  opacity: 0.65;
  pointer-events: none;
}

/* 核心视觉：垂直向下的垂直云层缝隙 (Vertical Cloud Rift) */
.cloud-rift-abyss-slit {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  cursor: pointer;
  text-decoration: none;
}

/* 云缝两侧的厚重云脊遮罩 */
.aerial-viewport-frame::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: calc(50% - 110px);
  background: 
    radial-gradient(circle at 100% 50%, transparent 20%, rgba(226, 232, 240, 0.95) 75%, rgba(180, 196, 209, 0.98) 100%),
    linear-gradient(90deg, #BAC9D4 0%, #E2E8F0 80%, rgba(255, 255, 255, 0.9) 100%);
  box-shadow: inset -25px 0 40px rgba(7, 22, 38, 0.85);
  z-index: 3;
  pointer-events: none;
}

.aerial-viewport-frame::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  width: calc(50% - 110px);
  background: 
    radial-gradient(circle at 0% 50%, transparent 20%, rgba(226, 232, 240, 0.95) 75%, rgba(180, 196, 209, 0.98) 100%),
    linear-gradient(270deg, #BAC9D4 0%, #E2E8F0 80%, rgba(255, 255, 255, 0.9) 100%);
  box-shadow: inset 25px 0 40px rgba(7, 22, 38, 0.85);
  z-index: 3;
  pointer-events: none;
}

/* 网页版入口就是云缝：缝隙中的深潜发光信标与声呐测绘 */
.rift-beacon-portal {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.5rem 1.2rem;
  background: rgba(3, 8, 14, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(56, 189, 248, 0.45);
  border-radius: 4px;
  box-shadow: 0 0 35px rgba(56, 189, 248, 0.25), inset 0 0 15px rgba(7, 29, 47, 0.8);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.cloud-rift-abyss-slit:hover .rift-beacon-portal {
  transform: scale(1.04);
  border-color: rgba(56, 189, 248, 0.9);
  box-shadow: 0 0 50px rgba(56, 189, 248, 0.5), inset 0 0 20px rgba(56, 189, 248, 0.3);
}

.rift-sonar-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--ocean-bioluminescence);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  position: relative;
}

.rift-sonar-icon::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ocean-bioluminescence);
  box-shadow: 0 0 12px var(--ocean-bioluminescence);
}

.rift-portal-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--text-cyan-hud);
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.rift-portal-sub {
  font-family: var(--font-sans);
  font-size: 0.74rem;
  color: var(--text-mist);
  letter-spacing: 0.05em;
}

/* 垂直云缝纵深标尺 (沿缝隙贯通的经纬线标) */
.rift-depth-meter {
  position: absolute;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem 0;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: rgba(56, 189, 248, 0.55);
}

/* 画面外的底部黑色信息条 (放置超大标题、价值宣称副标题与双按钮) */
.telemetry-black-bar-bottom {
  background: var(--black-chassis);
  border: 1px solid var(--border-black-bar);
  border-top: none;
  border-radius: 0 0 6px 6px;
  padding: 2.5rem 2.8rem;
  text-align: center;
}

/* 超大标题 (唯一 h1) */
.aerial-hero-h1 {
  font-family: var(--font-sans);
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.aerial-hero-h1 span.deep-highlight {
  color: #7DD3FC;
  text-shadow: 0 0 20px rgba(56, 189, 248, 0.35);
}

/* 两三行副标题 (说明解决什么问题、采用什么架构) */
.aerial-hero-desc {
  font-size: 1.05rem;
  color: var(--text-mist);
  line-height: 1.7;
  max-width: 820px;
  margin: 0 auto 2.2rem auto;
}

/* 两个按钮：主按钮引导下载或开始使用，辅助按钮指向命令行或文档 */
.aerial-action-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.btn-ocean-dive {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: #38BDF8;
  color: #03080E;
  padding: 0.85rem 2.2rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: all 0.25s ease;
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.35);
}

.btn-ocean-dive:hover {
  background: #7DD3FC;
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(56, 189, 248, 0.55);
}

.btn-telemetry-cmd {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: #0E1620;
  color: var(--text-pure);
  padding: 0.85rem 1.8rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border-black-bar);
  transition: all 0.25s ease;
}

.btn-telemetry-cmd:hover {
  background: #152232;
  border-color: rgba(56, 189, 248, 0.4);
}

/* 3. 产品核心 UI 舞台 (正下方放一块大的产品界面预览，用真实界面代替抽象插画，配 1.webp) */
.stage-section-aerial {
  margin-top: 3.5rem;
  margin-bottom: 4.5rem;
}

.stage-chassis-console {
  background: var(--black-sub);
  border: 1px solid var(--border-black-bar);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 25px 65px rgba(0, 0, 0, 0.7);
}

.stage-console-topbar {
  background: #080D12;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border-black-bar);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.console-dots-trio {
  display: flex;
  gap: 6px;
}

.console-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #1B2936;
}

.console-title-hud {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-cyan-hud);
  letter-spacing: 0.08em;
}

.stage-console-display {
  position: relative;
  line-height: 0;
  background: #030609;
}

.stage-console-display img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* 4. 核心特性矩阵 (两列并排 + 通栏卡片，配代码/Diff与组件示意，配 3.webp, 5.webp) */
.matrix-section-aerial {
  margin-bottom: 4.5rem;
}

.section-head-aerial {
  text-align: center;
  margin-bottom: 2.8rem;
}

.section-tag-hud {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-cyan-hud);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  display: block;
}

.section-title-aerial {
  font-family: var(--font-sans);
  font-size: 2.2rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: 0.03em;
  margin-bottom: 0.75rem;
}

.section-desc-aerial {
  font-size: 0.98rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
}

/* 两列并排 */
.matrix-grid-dual {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
  margin-bottom: 1.75rem;
}

.matrix-card-aerial {
  background: var(--black-sub);
  border: 1px solid var(--border-black-bar);
  border-radius: 6px;
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
}

.matrix-card-aerial:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
}

.card-tag-hud {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-cyan-hud);
  letter-spacing: 0.1em;
  margin-bottom: 0.45rem;
  display: block;
}

.card-title-aerial {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.8rem;
}

.card-desc-aerial {
  font-size: 0.92rem;
  color: var(--text-mist);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

/* 卡片内部配图 (内嵌 3.webp) */
.card-visual-chassis {
  width: 100%;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-black-bar);
  margin-bottom: 1.25rem;
  background: #030609;
}

.card-visual-chassis img {
  width: 100%;
  height: auto;
  display: block;
}

/* 代码与 Unified Diff 示意 */
.code-diff-aerial {
  background: #030609;
  border: 1px solid var(--border-black-bar);
  border-radius: 4px;
  padding: 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-mist);
  overflow-x: auto;
}

.diff-add {
  color: #4ADE80;
  background: rgba(74, 222, 128, 0.08);
  display: block;
  padding: 0 4px;
}

.diff-del {
  color: #F87171;
  background: rgba(248, 113, 113, 0.08);
  display: block;
  padding: 0 4px;
}

.diff-meta {
  color: var(--text-muted);
}

/* 通栏卡片：高阶能力 (执行轨迹、可观测性、自动化，配 5.webp) */
.matrix-card-fullspan {
  background: var(--black-sub);
  border: 1px solid var(--border-black-bar);
  border-radius: 6px;
  padding: 2.2rem 2.6rem;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 2.5rem;
  align-items: center;
  transition: all 0.3s ease;
}

.matrix-card-fullspan:hover {
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.55);
}

/* 5. 零摩擦起步 (单独一块快速开始，单条可复制命令，例如 $ npx deepseek-agent@latest run --model=deepseek-r1) */
.zerofriction-section-aerial {
  margin-bottom: 4.5rem;
}

.zerofriction-panel {
  background: linear-gradient(135deg, #070D14 0%, #030609 100%);
  border: 1px solid var(--border-black-bar);
  border-radius: 6px;
  padding: 3rem;
  text-align: center;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.55);
}

.zerofriction-title {
  font-family: var(--font-sans);
  font-size: 1.85rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.6rem;
}

.zerofriction-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1.8rem;
}

.command-telemetry-capsule {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: #000000;
  border: 1px solid rgba(56, 189, 248, 0.35);
  padding: 0.9rem 1.6rem;
  border-radius: 4px;
  max-width: 660px;
  width: 100%;
}

.cmd-string {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: #7DD3FC;
  word-break: break-all;
}

.btn-copy-hud {
  background: #0C1E2D;
  color: #FFFFFF;
  border: 1px solid rgba(56, 189, 248, 0.45);
  padding: 0.45rem 1.1rem;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-copy-hud:hover {
  background: #13334D;
  border-color: rgba(56, 189, 248, 0.8);
}

/* 6. 生态号召 (开源协议、文档、插件生态、论文或社区入口) */
.community-section-aerial {
  margin-bottom: 5rem;
}

.community-grid-quad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.community-card-aerial {
  background: var(--black-sub);
  border: 1px solid var(--border-black-bar);
  border-radius: 6px;
  padding: 1.75rem 1.4rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}

.community-card-aerial:hover {
  border-color: rgba(56, 189, 248, 0.5);
  transform: translateY(-3px);
  background: #0B131C;
}

.community-icon-hud {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--text-cyan-hud);
  margin-bottom: 0.85rem;
}

.community-name-aerial {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.45rem;
}

.community-meta-aerial {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 7. 极简页脚 (最底部一行低对比度信息：版权、开源协议，以及隐私政策、文档等链接) */
.aerial-footer {
  border-top: 1px solid var(--border-black-bar);
  padding: 2.2rem 0;
  background: var(--black-chassis);
}

.footer-inner-aerial {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-stamp-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.footer-stamp-text strong {
  color: var(--text-mist);
}

.footer-nav-aerial {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-nav-aerial a {
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.78rem;
  transition: color 0.2s ease;
}

.footer-nav-aerial a:hover {
  color: #FFFFFF;
}

/* 响应式断点适配 */
@media (max-width: 992px) {
  .aerial-viewport-frame {
    height: 420px;
  }
  .telemetry-black-bar-top {
    flex-direction: column;
    align-items: flex-start;
  }
  .matrix-grid-dual {
    grid-template-columns: 1fr;
  }
  .matrix-card-fullspan {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .community-grid-quad {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
  .aerial-hero-h1 {
    font-size: 1.95rem;
  }
  .telemetry-black-bar-bottom {
    padding: 1.8rem 1.2rem;
  }
  .community-grid-quad {
    grid-template-columns: 1fr;
  }
  .footer-inner-aerial {
    flex-direction: column;
    align-items: flex-start;
  }
}