/* ============================================
   0Lab · 拆给你看
   黑白 + 电光蓝 #00d4ff + 磨砂玻璃（多层 blur + 边框高光）
   字体：Inter + Noto Sans SC (OFL 免费商用)
   ============================================ */

:root {
  /* 暗模式 = 默认（深灰背景，不纯黑）*/
  --color-bg: #1a1a1a;
  --color-bg-soft: #0f0f0f;
  --color-fg: #f0f0f0;
  --color-fg-muted: rgba(240, 240, 240, 0.65);
  --color-fg-dim: rgba(240, 240, 240, 0.4);
  --color-accent: #00d4ff;
  --color-accent-2: #2563eb;
  --color-accent-glow: rgba(0, 212, 255, 0.4);
  --arrow-bg: rgba(255, 255, 255, 0.04);
  --arrow-bg-hover: rgba(255, 255, 255, 0.08);

  --color-glass-bg: rgba(255, 255, 255, 0.04);
  --color-glass-bg-hover: rgba(255, 255, 255, 0.08);
  --color-glass-bg-nav: rgba(26, 26, 26, 0.7);
  --color-glass-border: rgba(255, 255, 255, 0.1);
  --color-glass-border-hover: rgba(0, 212, 255, 0.3);
  /* 磨砂玻璃多层变量（暗模式默认值） */
  --glass-grad-1: rgba(255, 255, 255, 0.04);
  --glass-grad-2: rgba(255, 255, 255, 0.01);
  --glass-border-color: rgba(255, 255, 255, 0.14);
  --glass-highlight: rgba(255, 255, 255, 0.2);    /* 顶部高光 */
  --glass-halo: rgba(255, 255, 255, 0.05);        /* 1px 光圈 */
  --glass-bottom: rgba(0, 0, 0, 0.22);            /* 底部暗影 */
  --glass-outer: rgba(0, 0, 0, 0.28);              /* 外浮阴影 */
  --glass-outer-hover: rgba(0, 212, 255, 0.15);    /* hover 电光蓝外晕 */
  --glass-highlight-hover: rgba(255, 255, 255, 0.25);   /* hover 顶高光加强 */
  --glass-halo-hover: rgba(255, 255, 255, 0.08);        /* hover 1px 光圈加强 */
  --glass-bottom-hover: rgba(0, 0, 0, 0.25);            /* hover 底暗影加强 */

  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --radius: 12px;
  --radius-lg: 20px;

  --max-width: 1200px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
}

/* 亮模式（白底） */
[data-theme="light"] {
  --color-bg: #ffffff;
  --color-bg-soft: #f7f7f7;
  --color-fg: #0a0a0a;
  --color-fg-muted: rgba(10, 10, 10, 0.65);
  --color-fg-dim: rgba(10, 10, 10, 0.4);
  --color-glass-bg: rgba(0, 0, 0, 0.04);
  --color-glass-bg-hover: rgba(0, 0, 0, 0.08);
  --color-glass-bg-nav: rgba(255, 255, 255, 0.75);
  --color-glass-border: rgba(0, 0, 0, 0.1);
  --color-glass-border-hover: rgba(0, 212, 255, 0.5);
  /* 磨砂玻璃亮模式 override */
  --glass-grad-1: rgba(0, 0, 0, 0.04);
  --glass-grad-2: rgba(0, 0, 0, 0.01);
  --glass-border-color: rgba(0, 0, 0, 0.12);
  --glass-highlight: rgba(255, 255, 255, 0.5);     /* 亮模式顶高光 = 白 */
  --glass-halo: rgba(255, 255, 255, 0.2);
  --glass-bottom: rgba(0, 0, 0, 0.08);
  --glass-outer: rgba(0, 0, 0, 0.12);
  --glass-outer-hover: rgba(0, 212, 255, 0.2);
  --glass-highlight-hover: rgba(255, 255, 255, 0.6);    /* 亮模式 hover 顶高光加强 */
  --glass-halo-hover: rgba(255, 255, 255, 0.28);
  --glass-bottom-hover: rgba(0, 0, 0, 0.12);
  /* 亮模式 arrow-btn 发光减轻（白底上不强出来） */
  --color-accent-glow: rgba(0, 212, 255, 0.2);
  --arrow-bg: rgba(0, 0, 0, 0.04);
  --arrow-bg-hover: rgba(0, 0, 0, 0.08);
}

/* （删除了@跟随系统 @media 块，JS 接管） */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-fg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

a {
  color: inherit;
}

/* === 毛玻璃模块 === */
.glass {
  /* 磨砂玻璃：变量驱动，亮暗模式自动切换 */
  background: linear-gradient(135deg, var(--glass-grad-1), var(--glass-grad-2));
  backdrop-filter: blur(45px) saturate(150%);
  -webkit-backdrop-filter: blur(45px) saturate(150%);
  border: 1px solid var(--glass-border-color);
  box-shadow:
    inset 0 1px 0 var(--glass-highlight),         /* 顶部高光 */
    inset 0 0 0 1px var(--glass-halo),            /* 1px 光圈 */
    inset 0 -1px 0 var(--glass-bottom),           /* 底部暗影 */
    0 8px 32px var(--glass-outer);                /* 外浮阴影 */
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.glass-hover:hover {
  /* hover 强化：顶高光 + 1px 光圈 + 底暗影 + 电光蓝外晕 */
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow:
    inset 0 1px 0 var(--glass-highlight-hover),
    inset 0 0 0 1px var(--glass-halo-hover),
    inset 0 -1px 0 var(--glass-bottom-hover),
    0 8px 32px var(--glass-outer-hover);
  transform: translateY(-2px);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
  justify-content: center;
}

.tag {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 100px;
  border: 1px solid var(--color-glass-border);
  color: var(--color-fg);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.tag:hover {
  border-color: var(--color-accent);
  background: var(--color-glass-bg-hover);
  color: var(--color-accent);
}

/* === 按钮 === */
.btn-accent {
  display: inline-block;
  padding: 10px 22px;
  background: var(--color-accent);
  color: var(--color-bg);
  text-decoration: none;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-sans);
  transition: all 0.2s ease;
  box-shadow: 0 0 0 0 var(--color-accent-glow);
}

.btn-accent:hover {
  box-shadow: 0 0 24px 4px var(--color-accent-glow);
  transform: translateY(-1px);
}

.btn-accent:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-ghost {
  display: inline-block;
  padding: 10px 22px;
  background: transparent;
  color: var(--color-fg);
  text-decoration: none;
  font-weight: 500;
  border: 1px solid var(--color-glass-border);
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.2s ease;
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* === 导航 === */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 28px;
  margin: 16px 16px 0;       /* 顶部↔hero 缩短 4/5（原 mb 16 → 0） */
  border-radius: var(--radius);
  position: sticky;
  top: 16px;
  z-index: 100;
  transition: background 0.3s ease;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-fg);
  font-weight: 700;
  font-size: 18px;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
  margin: 0 auto;
}

.nav-links a {
  color: var(--color-fg-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--color-accent);
}

.nav-links a.active {
  color: var(--color-accent);
  font-weight: 600;
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-glass-border);
  border-radius: 8px;
  padding: 6px 12px;
  color: var(--color-fg);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  background: var(--color-glass-bg-hover);
  box-shadow: 0 0 12px var(--color-accent-glow);
}

/* === 段 1 锁定（Hero） === */
.section-locker {
  height: 100vh;
  overflow: hidden;
  position: relative;
}

.section-locker .hero {
  min-height: 100vh;
}

/* === 箭头按钮 === */
.arrow-btn {
  position: absolute;
  left: 50%;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1.5px solid var(--color-accent);
  background: var(--arrow-bg);
  color: var(--color-accent);
  cursor: pointer;
  z-index: 10;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 0 20px var(--color-accent-glow);
}

.arrow-btn svg {
  width: 28px;
  height: 28px;
  display: block;
}

.arrow-btn:hover {
  background: var(--arrow-bg-hover);
  box-shadow: 0 0 32px var(--color-accent-glow);
  transform: translateX(-50%) scale(1.08);
  animation-play-state: paused;
}

@keyframes arrow-bounce-down {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

@keyframes arrow-bounce-up {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(-8px); }
}

.arrow-btn.arrow-down {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  opacity: 1;
  transition: opacity 0.3s ease;
  animation: arrow-bounce-down 1.6s ease-in-out infinite;
}

.arrow-btn.arrow-down.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.arrow-btn.arrow-up {
  position: fixed;
  top: 96px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  opacity: 1;
  transition: opacity 0.3s ease;
  animation: arrow-bounce-up 1.6s ease-in-out infinite;
}

.arrow-btn.arrow-up.is-hidden {
  opacity: 0;
  pointer-events: none;
}

/* === Hero === */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px var(--space-5) var(--space-8);  /* 顶部↔hero 缩短 4/5（原 pt 64 → 16） */
  overflow: hidden;
}

.hero-card {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 64px 48px;
  max-width: 800px;
  width: 100%;
}

.hero-mascot {
  display: block;
  width: 160px;
  height: 160px;
  margin: 0 auto 24px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-accent);
  box-shadow: 0 0 32px var(--color-accent-glow);
}

.hero-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 24px;
  padding: 6px 14px;
  border: 1px solid var(--color-accent);
  border-radius: 999px;
}

.hero-title {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #00d4ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -2px;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--color-fg-muted);
  margin-bottom: 12px;
  font-weight: 500;
}

/* === 首页 hero 打字效果（仅 .hero-title[data-typewriter]） === */
.hero-title .char {
  display: inline-block;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.hero-title .cursor {
  display: inline-block;
  color: var(--color-accent);
  margin-left: 6px;
  font-weight: 400;
  animation: cursor-blink 0.8s step-end infinite;
  transition: opacity 0.3s ease;     /* .done 淡出过渡 */
}
.hero-title .cursor.done {
  animation: none;
  opacity: 0;
}
@keyframes cursor-blink {
  0%, 50%   { opacity: 1; }
  51%, 100% { opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-title .char    { opacity: 1; transition: none; }
  .hero-title .cursor  { display: none; }
}

.hero-tagline {
  font-size: 16px;
  color: var(--color-fg-dim);
  margin-bottom: 40px;
}

.hero-zero {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-weight: 700;
  text-shadow: 0 0 16px var(--color-accent-glow);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Sections === */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 100px var(--space-5) 18px;
  position: relative;
  scroll-margin-top: 100px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
}

.section-more {
  color: var(--color-fg-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

.section-more:hover {
  color: var(--color-accent);
}

/* === 教程卡 === */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.post-card {
  padding: 24px;
  cursor: pointer;
}

.post-thumb {
  width: 100%;
  height: 160px;
  background: rgba(0, 212, 255, 0.06);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border: 1px solid var(--color-glass-border);
  position: relative;
  overflow: hidden;
}

/* 缩略图里的几何标记（纯 CSS，不依赖图片） */
.post-thumb::before {
  content: '';
  width: 64px;
  height: 64px;
  border: 1.5px solid var(--color-accent);
  border-radius: 4px;
  opacity: 0.6;
  transition: all 0.3s ease;
}

.post-thumb-hardware::before {
  border-radius: 50% 50% 0 0;
  transform: rotate(45deg);
}

.post-thumb-software::before {
  border-radius: 0;
}

.post-thumb-software::after {
  content: '</>';
  position: absolute;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 700;
  opacity: 0.7;
}

.post-thumb-ai::before {
  border-radius: 50%;
  border-width: 1.5px;
  border-style: dashed;
}

.post-thumb-3d::before {
  border-radius: 2px;
  transform: perspective(80px) rotateX(15deg) rotateY(-15deg);
  box-shadow: 4px 4px 0 rgba(0, 212, 255, 0.15);
}

.post-thumb-all::before {
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  opacity: 0.5;
}

.post-card:hover .post-thumb::before {
  opacity: 1;
  transform: scale(1.05);
  border-color: var(--color-accent);
  box-shadow: 0 0 24px var(--color-accent-glow);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 12px;
}

.post-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(0, 212, 255, 0.15);
  color: var(--color-accent);
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.post-time {
  color: var(--color-fg-dim);
}

.post-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.post-excerpt {
  font-size: 14px;
  color: var(--color-fg-muted);
  line-height: 1.6;
}

/* === 分类 === */
.categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.cat-card {
  display: block;
  padding: 32px 24px;
  text-align: center;
  text-decoration: none;
  color: var(--color-fg);
}

.cat-icon {
  width: 48px;
  height: 48px;
  border: 1.5px solid var(--color-accent);
  border-radius: 4px;
  margin: 0 auto 12px;
  position: relative;
  transition: all 0.3s ease;
}

.cat-icon::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid var(--color-accent);
  opacity: 0.5;
}

.cat-icon-hardware::before {
  border-radius: 50%;
}

.cat-icon-software::before {
  border-radius: 0;
}

.cat-icon-3d::before {
  transform: rotate(45deg);
  border-radius: 0;
}

.cat-icon-ai::before {
  border-radius: 50%;
  border-style: dashed;
}

.cat-card:hover .cat-icon {
  box-shadow: 0 0 24px var(--color-accent-glow);
  transform: scale(1.05);
}

.cat-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.cat-card p {
  font-size: 13px;
  color: var(--color-fg-muted);
}

/* === 关于 === */
.about-card {
  padding: 48px;
  max-width: 800px;
  margin: 0 auto;
}

/* === about.html 2 列布局 === */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 100px var(--space-5);
  /* align-items 默认 stretch：左 hero 拉伸到右列总高 */
}
.about-left {
  display: flex;
  align-items: stretch;        /* hero 拉伸占满列高 */
  justify-content: center;
}
.about-left .hero-card {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 56px 40px;
  width: 100%;                  /* 占满列宽 = 右框宽 */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.about-right {
  display: grid;
  grid-template-rows: 1fr 1fr;   /* 上下两卡严格等高 */
  gap: 80px;                     /* 上下框间距 */
}
.about-right .about-card {
  max-width: 100%;
  width: 100%;
  margin: 0;                     /* 覆盖默认 margin: 0 auto */
  display: flex;
  flex-direction: column;
  justify-content: center;      /* 内容上下居中 */
  text-align: center;            /* 字体居中 */
}

/* === friends.html 间距与说明 === */
#friends {
  padding-top: 10px;            /* 仅 friends.html：hero pb 0 + 10 = 10px 间距 */
}
/* 仅 friends.html：hero padding-bottom 减到 0（使 hero 副标 → 欢迎 = 10px） */
body.friends-page .hero {
  padding-bottom: 0;
}
.friends-intro {
  text-align: center;
  margin-bottom: 15px;          /* 介绍到友链列表间隔（原 30 再减半） */
}
.friends-intro h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-fg);
}
.friends-intro p {
  color: var(--color-fg-muted);
  font-size: 16px;
}
.friends-intro a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px dashed var(--color-accent);
  transition: border-color 0.3s ease;
}
.friends-intro a:hover {
  border-bottom-color: transparent;
}

.friends-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.friend-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 28px;
  text-decoration: none;
  color: var(--color-fg);
  transition: all 0.3s ease;
}

.friend-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--color-accent);
  flex-shrink: 0;
}

.friend-content {
  flex: 1;
  min-width: 0;
}

.friend-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.friend-desc {
  font-size: 14px;
  color: var(--color-fg-muted);
  line-height: 1.6;
}

.about-card h2 {
  font-size: 32px;
  margin-bottom: 16px;
}

.about-card p {
  color: var(--color-fg-muted);
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.7;
}

.about-card strong {
  color: var(--color-accent);
  font-weight: 600;
}

.rules {
  margin: 24px 0;
  padding-left: 24px;
}

.rules li {
  color: var(--color-fg-muted);
  margin-bottom: 8px;
  font-size: 15px;
  line-height: 1.6;
}

.about-tagline {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-glass-border);
  text-align: center;
  font-size: 18px;
  color: var(--color-fg);
}

/* === 订阅 === */
.subscribe-card {
  padding: 48px;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.subscribe-card h2 {
  font-size: 28px;
  margin-bottom: 8px;
}

.subscribe-card p {
  color: var(--color-fg-muted);
  margin-bottom: 24px;
}

.subscribe-form {
  display: flex;
  gap: 8px;
}

.subscribe-form input {
  flex: 1;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-glass-border);
  border-radius: 8px;
  color: var(--color-fg);
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  transition: all 0.2s ease;
}

.subscribe-form input:focus {
  border-color: var(--color-accent);
  background: rgba(0, 212, 255, 0.05);
}

.subscribe-form input::placeholder {
  color: var(--color-fg-dim);
}

/* === Footer === */
.footer {
  border-top: 1px solid var(--color-glass-border);
  padding: var(--space-7) var(--space-5);
  margin-top: var(--space-9);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.footer-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-fg);
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-fg-muted);
  margin-top: 8px;
}

.footer-brand .footer-sub {
  font-size: 12px;
  color: var(--color-fg-dim);
  margin-top: 4px;
  letter-spacing: 0.5px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: var(--color-fg-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-meta {
  text-align: right;
  font-size: 12px;
  color: var(--color-fg-dim);
}

.footer-meta p {
  margin-bottom: 4px;
}

.footer-meta a {
  color: var(--color-fg-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-meta a:hover {
  color: var(--color-accent);
}

/* === 响应式 === */
@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .nav-links {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-card {
    padding: 48px 24px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-meta {
    text-align: center;
  }

  .about-card,
  .subscribe-card {
    padding: 32px 24px;
  }
}

/* === 滚动条 === */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 212, 255, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 212, 255, 0.5);
}

/* === 选区 === */
::selection {
  background: rgba(0, 212, 255, 0.3);
  color: var(--color-fg);
}

/* === 隐私页 5 个 0 大字 === */
.privacy-zeros {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto 48px;
  padding: 56px 40px;
  border-radius: var(--radius);
  background: var(--glass-grad-1);
  border: 1px solid var(--glass-border-color);
  box-shadow:
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -1px 0 var(--glass-bottom),
    0 0 0 1px var(--glass-outer),
    0 8px 32px var(--glass-halo);
  backdrop-filter: blur(45px) saturate(150%);
  -webkit-backdrop-filter: blur(45px) saturate(150%);
}
.zero-item {
  text-align: center;
}
.zero-num {
  font-size: clamp(56px, 7vw, 96px);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #00d4ff 0%, #ffffff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  font-family: 'Inter', 'Noto Sans SC', sans-serif;
}
.zero-label {
  font-size: 14px;
  color: var(--color-fg-muted);
  letter-spacing: 0.05em;
}
@media (max-width: 768px) {
  .privacy-zeros {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 16px;
    padding: 40px 24px;
  }
}

/* === RSS 页 Coming soon === */
.rss-coming {
  text-align: center;
  padding: 64px 40px;
  margin: 0 auto 48px;
  max-width: 680px;
}
.rss-coming-status {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #00d4ff 0%, rgba(0,212,255,0.3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.rss-coming-desc {
  font-size: 14px;
  color: var(--color-fg-dim);
  margin: 0 auto;
}

/* === RSS 页 3 阅读器卡 === */
.rss-readers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto 48px;
  padding: 0 var(--space-5);
}
.reader-card {
  padding: 32px 24px;
  text-align: center;
  text-decoration: none;
  color: var(--color-fg);
  display: block;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.reader-card:hover {
  transform: translateY(-4px);
  box-shadow:
    inset 0 1px 0 var(--glass-highlight-hover),
    inset 0 -1px 0 var(--glass-bottom-hover),
    0 0 0 1px var(--glass-outer-hover),
    0 12px 40px var(--glass-halo-hover);
}
.reader-icon {
  font-size: 32px;
  margin-bottom: 12px;
}
.reader-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}
.reader-platform {
  font-size: 12px;
  color: var(--color-fg-dim);
  letter-spacing: 0.05em;
}

/* RSS 订阅地址 */
.rss-url {
  text-align: center;
  margin: 48px auto 80px;
  max-width: 680px;
  padding: 0 24px;
}
.rss-url h2 {
  font-size: 18px;
  margin-bottom: 16px;
}
.rss-url code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 10px 20px;
  background: rgba(0,212,255,0.06);
  border: 1px solid var(--color-glass-border);
  border-radius: 8px;
  color: var(--color-accent);
}
.rss-url p {
  font-size: 14px;
  color: var(--color-fg-muted);
  margin-top: 12px;
}
@media (max-width: 768px) {
  .rss-readers {
    grid-template-columns: 1fr;
  }
}