/* ============================================================
   易狗IDE官网 - 全局样式
   美学方向：编辑式技术暗黑（Editorial Tech-Noir）
   磨砂玻璃语言延伸自 IDE themes.js
   ============================================================ */

/* ---------- 字体加载 ---------- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ---------- 主题变量 ---------- */
:root {
  /* 背景色阶 - 呼应 IDE ocean 主题 */
  --bg-base: #0a0e14;
  --bg-elevated: #11161f;
  --bg-sunken: #06080c;
  --bg-glass: rgba(17, 22, 31, 0.72);
  --bg-glass-strong: rgba(17, 22, 31, 0.88);
  --bg-glass-hover: rgba(99, 226, 183, 0.06);

  /* 强调色 - IDE dark 薄荷绿 */
  --accent: #63e2b7;
  --accent-hover: #7eecd0;
  --accent-dim: #4fc89e;
  --accent-soft: rgba(99, 226, 183, 0.14);
  --accent-border: rgba(99, 226, 183, 0.32);
  /* 次强调 - IDE sunrise 橙 */
  --accent-warm: #f97316;
  --accent-warm-soft: rgba(249, 115, 22, 0.14);

  /* 文字色阶 */
  --text-primary: #e6f4ff;
  --text-secondary: #a8b3c5;
  --text-muted: #6b7889;
  --text-faint: #4a5568;
  --text-dim: #3a4252;

  /* 边框 */
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.14);
  --border-accent: rgba(99, 226, 183, 0.3);

  /* 阴影 */
  --shadow-glow: 0 0 48px rgba(99, 226, 183, 0.14);
  --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.45);
  --shadow-pop: 0 20px 60px rgba(0, 0, 0, 0.55);
  --shadow-float: 0 4px 16px rgba(0, 0, 0, 0.35);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-pill: 999px;

  /* 字体 */
  --font-display: 'Noto Serif SC', 'Songti SC', serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-code: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* 布局 */
  --nav-height: 68px;
  --max-width: 1280px;
  --gutter: clamp(1.2rem, 4vw, 3rem);

  /* 彩虹色阶 - IDE FLOW_RAINBOW */
  --rainbow-red: #ff6b6b;
  --rainbow-orange: #ffa94d;
  --rainbow-yellow: #ffd43b;
  --rainbow-green: #69db7c;
  --rainbow-blue: #4dabf7;
  --rainbow-purple: #9775fa;
  --rainbow-pink: #f783ac;

  --transition: 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 主题：浅色 light ---------- */
[data-theme="light"] {
  --bg-base: #f4f6fa;
  --bg-elevated: #ffffff;
  --bg-sunken: #e9edf3;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-strong: rgba(255, 255, 255, 0.9);
  --bg-glass-hover: rgba(24, 160, 88, 0.06);

  --accent: #18a058;
  --accent-hover: #36ad6a;
  --accent-dim: #128050;
  --accent-soft: rgba(24, 160, 88, 0.12);
  --accent-border: rgba(24, 160, 88, 0.3);
  --accent-warm: #f97316;
  --accent-warm-soft: rgba(249, 115, 22, 0.12);

  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-faint: #94a3b8;
  --text-dim: #cbd5e1;

  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --border-accent: rgba(24, 160, 88, 0.3);

  --shadow-glow: 0 0 48px rgba(24, 160, 88, 0.12);
  --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.08);
  --shadow-pop: 0 20px 60px rgba(0, 0, 0, 0.12);
  --shadow-float: 0 4px 16px rgba(0, 0, 0, 0.06);
}
[data-theme="light"] body::before { opacity: 0.025; }
[data-theme="light"] .navbar { background: rgba(244, 246, 250, 0.6); }
[data-theme="light"] .navbar.scrolled { background: rgba(244, 246, 250, 0.88); }
[data-theme="light"] .code-window-header { background: rgba(0, 0, 0, 0.025); }
[data-theme="light"] .doc-code-header { background: rgba(0, 0, 0, 0.02); }
[data-theme="light"] .doc-table th { background: rgba(24, 160, 88, 0.08); }

/* ---------- 主题：朝阳 sunrise ---------- */
[data-theme="sunrise"] {
  --bg-base: #fff8f0;
  --bg-elevated: #ffffff;
  --bg-sunken: #fff0e0;
  --bg-glass: rgba(255, 252, 247, 0.72);
  --bg-glass-strong: rgba(255, 252, 247, 0.9);
  --bg-glass-hover: rgba(249, 115, 22, 0.06);

  --accent: #f97316;
  --accent-hover: #fb8c2e;
  --accent-dim: #ea6700;
  --accent-soft: rgba(249, 115, 22, 0.12);
  --accent-border: rgba(249, 115, 22, 0.3);
  --accent-warm: #ea580c;
  --accent-warm-soft: rgba(234, 88, 12, 0.12);

  --text-primary: #451a03;
  --text-secondary: #7c2d12;
  --text-muted: #9a3412;
  --text-faint: #c2410c;
  --text-dim: #fed7aa;

  --border: rgba(120, 53, 15, 0.1);
  --border-strong: rgba(120, 53, 15, 0.18);
  --border-accent: rgba(249, 115, 22, 0.3);

  --shadow-glow: 0 0 48px rgba(249, 115, 22, 0.14);
  --shadow-card: 0 10px 40px rgba(120, 53, 15, 0.08);
  --shadow-pop: 0 20px 60px rgba(120, 53, 15, 0.12);
  --shadow-float: 0 4px 16px rgba(120, 53, 15, 0.06);
}
[data-theme="sunrise"] body::before { opacity: 0.03; }
[data-theme="sunrise"] .navbar { background: rgba(255, 248, 240, 0.6); }
[data-theme="sunrise"] .navbar.scrolled { background: rgba(255, 248, 240, 0.88); }
[data-theme="sunrise"] .code-window-header { background: rgba(120, 53, 15, 0.03); }
[data-theme="sunrise"] .doc-code-header { background: rgba(120, 53, 15, 0.025); }
[data-theme="sunrise"] .doc-table th { background: rgba(249, 115, 22, 0.08); }
[data-theme="sunrise"] .hero-title .accent-char { color: var(--accent); }

/* 浅色/朝阳主题：代码块保持深色，保证语法高亮可读性 */
[data-theme="light"] .code-window,
[data-theme="sunrise"] .code-window { background: rgba(13, 17, 23, 0.96); border-color: rgba(255,255,255,0.1); }
[data-theme="light"] .code-window-header,
[data-theme="sunrise"] .code-window-header { background: rgba(255,255,255,0.03); border-bottom-color: rgba(255,255,255,0.08); }
[data-theme="light"] .code-body,
[data-theme="sunrise"] .code-body { color: #c9d1d9; }
[data-theme="light"] .code-filename,
[data-theme="sunrise"] .code-filename { color: #8b949e; }
[data-theme="light"] .doc-code,
[data-theme="sunrise"] .doc-code { background: #0d1117; border-color: rgba(255,255,255,0.1); }
[data-theme="light"] .doc-code-header,
[data-theme="sunrise"] .doc-code-header { background: rgba(255,255,255,0.03); border-bottom-color: rgba(255,255,255,0.08); }
[data-theme="light"] .doc-code-header > span,
[data-theme="sunrise"] .doc-code-header > span { color: #8b949e; }
[data-theme="light"] .doc-code pre,
[data-theme="sunrise"] .doc-code pre { color: #c9d1d9; }
[data-theme="light"] .copy-btn,
[data-theme="sunrise"] .copy-btn { color: #8b949e; border-color: rgba(255,255,255,0.1); }
[data-theme="light"] .typing-cursor,
[data-theme="sunrise"] .typing-cursor { background: var(--accent); }

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* 噪点纹理叠加 - 使用 color-mix 自适应主题 */
  background-image:
    radial-gradient(circle at 15% 20%, color-mix(in srgb, var(--accent) 5%, transparent) 0%, transparent 45%),
    radial-gradient(circle at 85% 80%, color-mix(in srgb, var(--accent-warm) 4%, transparent) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--rainbow-blue) 3%, transparent) 0%, transparent 60%);
  background-attachment: fixed;
}

/* 细噪点遮罩层 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }

::selection { background: var(--accent-soft); color: var(--accent); }

/* 滚动条 - 主题化（随主题色变化） */
html {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--accent) 30%, transparent) var(--bg-sunken);
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-sunken); border-radius: 5px; }
::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 5px;
  border: 2px solid var(--bg-sunken);
}
::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--accent) 45%, transparent);
}
::-webkit-scrollbar-corner { background: var(--bg-sunken); }

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; }

.display-xl {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 7vw, 6rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.display-lg {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.display-md {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
}

.text-lead { font-size: 1.18rem; color: var(--text-secondary); line-height: 1.75; font-weight: 300; }
.text-body { font-size: 1rem; color: var(--text-secondary); line-height: 1.8; }
.text-small { font-size: 0.875rem; color: var(--text-muted); }
.text-mono { font-family: var(--font-code); }

.accent-text { color: var(--accent); }
.warm-text { color: var(--accent-warm); }

/* 装饰性中文标点 */
.deco-bracket { color: var(--accent); font-family: var(--font-display); font-weight: 400; }

/* ---------- 布局容器 ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 2;
}

.section { padding: clamp(5rem, 10vw, 9rem) 0; position: relative; }
.section-tight { padding: clamp(3.5rem, 7vw, 6rem) 0; position: relative; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-code);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: 1.2rem;
}
.section-label::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.015em;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.75;
  font-weight: 300;
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  background: rgba(10, 14, 20, 0.55);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}
.navbar.scrolled {
  background: rgba(10, 14, 20, 0.85);
  border-bottom-color: var(--border);
}
.nav-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
}
.brand-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
  background: transparent;
  border: none;
}
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text .cn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}
.brand-text .en {
  font-family: var(--font-code);
  font-size: 0.62rem;
  color: #863bff;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 1px;
}
.brand-text small { font-family: var(--font-code); font-size: 0.62rem; color: #863bff; font-weight: 600; letter-spacing: 0.18em; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.nav-links a {
  padding: 0.5rem 1rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: var(--bg-glass-hover); }
.nav-links a.active { color: var(--accent); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.2rem;
  background: var(--accent-soft);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--accent);
  transition: all var(--transition);
}
.nav-cta:hover {
  background: var(--accent);
  color: var(--bg-base);
  box-shadow: 0 6px 20px color-mix(in srgb, var(--accent) 30%, transparent);
  transform: translateY(-1px);
}

.mobile-toggle { display: none; font-size: 1.5rem; padding: 0.4rem; color: var(--text-primary); }

.nav-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}
.nav-icon:hover {
    color: var(--accent);
    border-color: var(--border-accent);
    background: var(--bg-glass-hover);
}

/* 主题切换器 */
.theme-switcher {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
}
.theme-opt {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px; height: 26px;
    border-radius: 50%;
    transition: all var(--transition);
    position: relative;
}
.theme-opt .sw {
    width: 16px; height: 16px;
    border-radius: 50%;
    border: 1.5px solid var(--border-strong);
    transition: all var(--transition);
}
.theme-opt:hover .sw { transform: scale(1.15); }
.theme-opt.active { background: var(--accent-soft); }
.theme-opt.active .sw { border-color: var(--accent); box-shadow: 0 0 8px color-mix(in srgb, var(--accent) 50%, transparent); }
.theme-opt[data-theme="dark"] .sw { background: linear-gradient(135deg, #0a0e14, #1e1e1e); }
.theme-opt[data-theme="light"] .sw { background: linear-gradient(135deg, #f4f6fa, #ffffff); }
.theme-opt[data-theme="sunrise"] .sw { background: linear-gradient(135deg, #fff8f0, #fed7aa); }

/* ---------- 软件预览轮播 ---------- */
.showcase {
  margin-top: 3rem;
}
.showcase-stage {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-pop);
}
.showcase-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0a0e14;
}
.showcase-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: opacity 0.35s ease;
  cursor: zoom-in;
}
.showcase-img.fading { opacity: 0; }

/* ---------- 图片浮窗 lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.lightbox.open { display: flex; }
.lightbox-img {
  max-width: 94vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
}
.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  cursor: pointer;
  transition: all 0.2s ease;
}
.lightbox-close:hover { background: rgba(255, 255, 255, 0.2); transform: rotate(90deg); }
.lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  cursor: pointer;
  transition: all 0.2s ease;
}
.lightbox-arrow:hover { background: rgba(255, 255, 255, 0.18); }
.lightbox-arrow.prev { left: 1.5rem; }
.lightbox-arrow.next { right: 1.5rem; }
.lightbox-counter {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
@media (max-width: 768px) {
  .lightbox-arrow { width: 40px; height: 40px; }
  .lightbox-arrow.prev { left: 0.5rem; }
  .lightbox-arrow.next { right: 0.5rem; }
}
.showcase-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-glass-strong);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.25s ease;
}
.showcase-arrow:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 24px color-mix(in srgb, var(--accent) 50%, transparent);
}
.showcase-arrow.prev { left: 1rem; }
.showcase-arrow.next { right: 1rem; }
.showcase-counter {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  z-index: 2;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
  background: rgba(10, 14, 20, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}
.showcase-thumbs {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: thin;
}
.showcase-thumbs::-webkit-scrollbar { height: 4px; }
.showcase-thumbs::-webkit-scrollbar-track { background: transparent; }
.showcase-thumbs::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 2px;
}
.thumb {
  flex: 0 0 130px;
  height: 78px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  padding: 0;
  background: transparent;
  transition: all 0.25s ease;
  opacity: 0.55;
}
.thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.thumb:hover { opacity: 0.85; border-color: var(--accent-border); }
.thumb.active {
  opacity: 1;
  border-color: var(--accent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 40%, transparent);
}
@media (max-width: 768px) {
  .showcase-arrow { width: 38px; height: 38px; }
  .thumb { flex: 0 0 96px; height: 60px; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: var(--bg-base);
  font-weight: 700;
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 25%, transparent);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px color-mix(in srgb, var(--accent) 40%, transparent);
}
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s;
}
.btn-primary:hover::after { left: 100%; }

.btn-ghost {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
}
.btn-ghost:hover {
  border-color: var(--border-accent);
  background: var(--bg-glass-hover);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-lg { padding: 1.1rem 2.4rem; font-size: 1.08rem; }

/* ---------- 磨砂玻璃卡片基底 ---------- */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

/* ---------- Hero 区 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + 3rem) 0 4rem;
  overflow: hidden;
}
/* 网格背景 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 4%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 4%, transparent) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 75%);
}
/* 光晕 */
.hero::after {
  content: "";
  position: absolute;
  top: 20%; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 700px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 60%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 1.8rem;
}
.hero-eyebrow .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
.hero-eyebrow .version { color: var(--accent); }

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6.5vw, 5.4rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
}
.hero-title .line { display: block; }
.hero-title .accent-char {
  color: var(--accent);
  position: relative;
}
.hero-title .accent-char::after {
  content: "";
  position: absolute;
  bottom: 0.08em; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.hero-tagline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2.2rem;
  max-width: 520px;
  font-weight: 300;
}
.hero-tagline strong { color: var(--text-primary); font-weight: 500; }

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }

.hero-meta {
  display: flex;
  gap: 2.4rem;
  flex-wrap: wrap;
  padding-top: 1.8rem;
  border-top: 1px solid var(--border);
}
.hero-meta-item .num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  line-height: 1;
}
.hero-meta-item .label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  display: block;
}

/* Hero 代码窗 */
.hero-code {
  position: relative;
}
.code-window {
  background: var(--bg-glass-strong);
  backdrop-filter: blur(20px) saturate(1.3);
  -webkit-backdrop-filter: blur(20px) saturate(1.3);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-pop);
}
.code-window-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.2rem;
  background: rgba(255, 255, 255, 0.025);
  border-bottom: 1px solid var(--border);
}
.code-dot { width: 11px; height: 11px; border-radius: 50%; }
.code-dot.red { background: #ff5f56; }
.code-dot.yellow { background: #ffbd2e; }
.code-dot.green { background: #27c93f; }
.code-filename {
  margin-left: 0.8rem;
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.code-body {
  padding: 1.4rem 1.5rem;
  font-family: var(--font-code);
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--text-secondary);
  min-height: 320px;
  overflow-x: auto;
  white-space: pre;
}
.code-body .ln { color: var(--text-dim); user-select: none; display: inline-block; width: 2.2em; text-align: right; margin-right: 1.2em; }
.code-body .kw { color: var(--accent); font-weight: 500; }
.code-body .str { color: var(--rainbow-yellow); }
.code-body .num { color: var(--rainbow-orange); }
.code-body .com { color: var(--text-faint); font-style: italic; }
.code-body .fn { color: var(--rainbow-blue); }
.code-body .type { color: var(--rainbow-purple); }
.code-body .punct { color: var(--text-muted); }
.code-body .plain { color: var(--text-secondary); }

/* 光标 */
.typing-cursor {
  display: inline-block;
  width: 8px; height: 1.1em;
  background: var(--accent);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}

/* Hero 代码窗浮动装饰 */
.hero-code::before {
  content: "";
  position: absolute;
  top: -20px; right: -20px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent-warm) 15%, transparent) 0%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
}
.hero-code::after {
  content: "";
  position: absolute;
  bottom: -30px; left: -30px;
  width: 220px; height: 220px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
}

/* ---------- 核心特性 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}
.feature-card {
  position: relative;
  padding: 2.2rem 1.9rem;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  overflow: hidden;
}
/* 破格错位：第2、5张下移 */
.features-grid .feature-card:nth-child(2) { transform: translateY(28px); }
.features-grid .feature-card:nth-child(5) { transform: translateY(28px); }
.features-grid .feature-card:nth-child(2):hover,
.features-grid .feature-card:nth-child(5):hover { transform: translateY(24px); }

.feature-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-glass-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-6px);
}
.features-grid .feature-card:nth-child(2):hover,
.features-grid .feature-card:nth-child(5):hover { transform: translateY(22px); }

.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--card-color, var(--accent)), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1.4rem;
  color: var(--card-color, var(--accent));
  transition: all var(--transition);
}
.feature-card:hover .feature-icon {
  border-color: var(--card-color, var(--accent));
  box-shadow: 0 0 20px var(--card-color, var(--accent));
}
.feature-icon svg { width: 26px; height: 26px; }

.feature-card h3 {
  font-size: 1.32rem;
  font-weight: 700;
  margin-bottom: 0.7rem;
  color: var(--text-primary);
}
.feature-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.feature-tag {
  display: inline-block;
  margin-top: 1.1rem;
  padding: 0.25rem 0.7rem;
  font-family: var(--font-code);
  font-size: 0.72rem;
  color: var(--card-color, var(--accent));
  background: color-mix(in srgb, var(--card-color, var(--accent)) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-color, var(--accent)) 25%, transparent);
  border-radius: var(--radius-sm);
}

/* ---------- 代码实演 ---------- */
.demo-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.demo-tab {
  padding: 0.6rem 1.3rem;
  font-family: var(--font-code);
  font-size: 0.88rem;
  color: var(--text-muted);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.demo-tab:hover { color: var(--text-secondary); border-color: var(--border-strong); }
.demo-tab.active {
  color: var(--accent);
  border-color: var(--border-accent);
  background: var(--accent-soft);
}

.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.demo-panel { display: none; }
.demo-panel.active { display: contents; animation: fadeIn 0.4s ease; }

.demo-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-code);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.7rem;
}
.demo-label .badge {
  padding: 0.15rem 0.55rem;
  font-size: 0.72rem;
  border-radius: var(--radius-sm);
}
.demo-label .badge.eg { background: var(--accent-soft); color: var(--accent); border: 1px solid var(--border-accent); }
.demo-label .badge.go { background: rgba(77, 171, 247, 0.14); color: var(--rainbow-blue); border: 1px solid rgba(77, 171, 247, 0.3); }

/* ---------- 主题展示 ---------- */
.themes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  margin-top: 3.5rem;
}
.theme-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
  perspective: 1000px;
}
.theme-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-pop);
  border-color: var(--border-strong);
}
.theme-preview {
  height: 180px;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 0.8rem;
  font-family: var(--font-code);
  font-size: 0.7rem;
  overflow: hidden;
}
.theme-preview .tp-titlebar {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.theme-preview .tp-dot { width: 7px; height: 7px; border-radius: 50%; }
.theme-preview .tp-body { display: flex; gap: 0.4rem; flex: 1; }
.theme-preview .tp-side { width: 24px; border-radius: 3px; }
.theme-preview .tp-main { flex: 1; border-radius: 3px; padding: 0.4rem; display: flex; flex-direction: column; gap: 0.25rem; }
.theme-preview .tp-line { height: 5px; border-radius: 2px; background: rgba(128,128,128,0.2); }
.theme-preview .tp-line.short { width: 60%; }
.theme-preview .tp-line.accent { background: var(--theme-accent); width: 40%; }

.theme-meta {
  padding: 1rem 1.2rem;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
}
.theme-meta h4 { font-size: 1.05rem; margin-bottom: 0.3rem; }
.theme-meta .swatch { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 0.4rem; vertical-align: middle; }
.theme-meta p { font-size: 0.8rem; color: var(--text-muted); }

/* 4 套主题预览配色 */
.theme-dark .theme-preview { background: rgba(30,30,30,0.88); --theme-accent: #63e2b7; }
.theme-dark .tp-dot { background: #63e2b7; }
.theme-dark .tp-side { background: rgba(255,255,255,0.05); }

.theme-light .theme-preview { background: rgba(255,255,255,0.92); --theme-accent: #18a058; color: #1e293b; }
.theme-light .tp-dot { background: #18a058; }
.theme-light .tp-side { background: rgba(0,0,0,0.05); }
.theme-light .tp-line { background: rgba(0,0,0,0.1); }

.theme-ocean .theme-preview { background: rgba(8,16,24,0.88); --theme-accent: #4facfe; }
.theme-ocean .tp-dot { background: #4facfe; }
.theme-ocean .tp-side { background: rgba(255,255,255,0.05); }

.theme-sunrise .theme-preview { background: rgba(255,248,240,0.92); --theme-accent: #f97316; color: #451a03; }
.theme-sunrise .tp-dot { background: #f97316; }
.theme-sunrise .tp-side { background: rgba(0,0,0,0.05); }
.theme-sunrise .tp-line { background: rgba(0,0,0,0.1); }

/* ---------- AI 协作 ---------- */
.ai-stage {
  position: relative;
  margin-top: 3.5rem;
  height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ai-core {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 130px; height: 130px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-accent);
  box-shadow: 0 0 60px color-mix(in srgb, var(--accent) 30%, transparent), inset 0 0 30px color-mix(in srgb, var(--accent) 8%, transparent);
  z-index: 3;
}
.ai-core::before {
  content: "";
  position: absolute;
  inset: -8px;
  border: 1px dashed var(--border-accent);
  border-radius: 50%;
  animation: spin 20s linear infinite;
}
.ai-core-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  text-align: center;
  line-height: 1.2;
}
.ai-core-label small { display: block; font-family: var(--font-code); font-size: 0.65rem; color: var(--text-muted); font-weight: 400; margin-top: 0.2rem; }

.ai-node {
  position: absolute;
  width: 150px;
  padding: 1rem;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  z-index: 2;
  cursor: pointer;
}
.ai-node:hover {
  border-color: var(--node-color, var(--accent));
  box-shadow: 0 0 30px var(--node-color, var(--accent));
  transform: scale(1.05);
}
.ai-node .role {
  font-family: var(--font-code);
  font-size: 0.72rem;
  color: var(--node-color, var(--accent));
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.3rem;
}
.ai-node h4 { font-size: 1rem; margin-bottom: 0.3rem; color: var(--text-primary); }
.ai-node p { font-size: 0.78rem; color: var(--text-muted); line-height: 1.5; }

/* 5 个节点环绕位置 */
.ai-node.n1 { top: 8%; left: 50%; transform: translateX(-50%); --node-color: var(--rainbow-yellow); }
.ai-node.n2 { top: 28%; right: 8%; --node-color: var(--rainbow-blue); }
.ai-node.n3 { bottom: 18%; right: 14%; --node-color: var(--rainbow-purple); }
.ai-node.n4 { bottom: 18%; left: 14%; --node-color: var(--rainbow-pink); }
.ai-node.n5 { top: 28%; left: 8%; --node-color: var(--rainbow-orange); }

.ai-node.n1:hover { transform: translateX(-50%) scale(1.05); }

.ai-svg { position: absolute; inset: 0; z-index: 1; pointer-events: none; }

/* ---------- 版本时间线 ---------- */
.timeline {
  position: relative;
  margin-top: 3.5rem;
  padding-left: 2rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--rainbow-red), var(--rainbow-orange), var(--rainbow-yellow), var(--rainbow-green), var(--rainbow-blue), var(--rainbow-purple), var(--rainbow-pink), var(--rainbow-red), var(--rainbow-orange), var(--rainbow-green));
  opacity: 0.4;
}
.timeline-item {
  position: relative;
  padding: 0 0 2.4rem 2.6rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -2px; top: 4px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--bg-base);
  border: 3px solid var(--tl-color, var(--accent));
  box-shadow: 0 0 0 4px rgba(10, 14, 20, 1);
  transition: all var(--transition);
}
.timeline-item:hover .timeline-dot {
  box-shadow: 0 0 20px var(--tl-color, var(--accent)), 0 0 0 4px rgba(10, 14, 20, 1);
  transform: scale(1.15);
}
.timeline-version {
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--tl-color, var(--accent));
  font-weight: 500;
  margin-bottom: 0.3rem;
}
.timeline-date {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-left: 0.6rem;
}
.timeline-content h4 {
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}
.timeline-content p { font-size: 0.92rem; color: var(--text-muted); }

/* ---------- 社区区块 ---------- */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}
.community-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2.6rem 2rem;
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.community-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--cm-color, var(--accent));
  opacity: 0.7;
}
.community-card:hover {
  border-color: var(--cm-color, var(--accent));
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 40px color-mix(in srgb, var(--cm-color, var(--accent)) 25%, transparent);
}
.community-card .cm-icon {
  width: 64px; height: 64px;
  display: grid; place-items: center;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 50%;
  margin-bottom: 1.4rem;
  color: var(--cm-color, var(--accent));
  transition: all var(--transition);
}
.community-card:hover .cm-icon {
  border-color: var(--cm-color, var(--accent));
  box-shadow: 0 0 24px color-mix(in srgb, var(--cm-color, var(--accent)) 40%, transparent);
}
.community-card .cm-icon svg { width: 30px; height: 30px; }
.community-card h3 { font-size: 1.3rem; margin-bottom: 0.5rem; color: var(--text-primary); }
.community-card .cm-value {
  font-family: var(--font-code);
  font-size: 1rem;
  color: var(--cm-color, var(--accent));
  margin-bottom: 0.6rem;
  font-weight: 500;
}
.community-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.5rem; line-height: 1.6; }
.community-card .cm-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.4rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--cm-color, var(--accent));
  border: 1px solid color-mix(in srgb, var(--cm-color, var(--accent)) 35%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--cm-color, var(--accent)) 8%, transparent);
  transition: all var(--transition);
  margin-top: auto;
}
.community-card:hover .cm-btn {
  background: var(--cm-color, var(--accent));
  color: var(--bg-base);
}
@media (max-width: 860px) {
  .community-grid { grid-template-columns: 1fr; }
}

/* ---------- 下载 CTA ---------- */
.cta-band {
  position: relative;
  padding: clamp(4rem, 8vw, 7rem) 0;
  text-align: center;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(99, 226, 183, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
}
.cta-band .container { position: relative; z-index: 2; }
.cta-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  margin-bottom: 1.2rem;
}
.cta-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
}
.cta-platforms {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}
.cta-platform {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.cta-platform svg { width: 28px; height: 28px; }

/* ---------- 文档页 ---------- */
.docs-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  padding-top: calc(var(--nav-height) + 2.5rem);
  align-items: start;
}
.docs-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 2rem);
  max-height: calc(100vh - var(--nav-height) - 3rem);
  overflow-y: auto;
  padding: 1.6rem 1.2rem;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.docs-sidebar h3 {
  font-size: 0.78rem;
  font-family: var(--font-code);
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  padding: 0 0.6rem;
}
.docs-nav { display: flex; flex-direction: column; gap: 0.15rem; }
.docs-nav a {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 0.8rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: all var(--transition);
}
.docs-nav a:hover { color: var(--text-primary); background: var(--bg-glass-hover); }
.docs-nav a.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
}
.docs-nav a .num {
  font-family: var(--font-code);
  font-size: 0.75rem;
  color: var(--text-faint);
  width: 1.5em;
}
.docs-nav a.active .num { color: var(--accent); }

/* 文档搜索框 */
.docs-search {
  position: relative;
  margin-bottom: 1rem;
}
.docs-search input {
  width: 100%;
  padding: 0.5rem 0.7rem 0.5rem 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: var(--font-body);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.docs-search input:focus {
  outline: none;
  border-color: var(--accent-border);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.docs-search input::placeholder { color: var(--text-muted); }
.docs-search-icon {
  position: absolute;
  left: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}
/* 搜索结果列表 */
.docs-search-results {
  margin-bottom: 1rem;
  max-height: 60vh;
  overflow-y: auto;
}
.docs-search-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.3rem 0.6rem;
  margin-bottom: 0.3rem;
}
.docs-search-item {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition);
}
.docs-search-item:hover {
  background: var(--accent-soft);
  color: var(--accent);
}
.dsec-section { font-weight: 600; font-size: 0.76rem; color: var(--text-muted); }
.dsec-h3 { color: var(--text-secondary); line-height: 1.4; }
.docs-search-empty {
  padding: 0.8rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
/* 二级子菜单 */
.docs-subnav {
  display: none;
  flex-direction: column;
  gap: 0.1rem;
  padding-left: 1.2rem;
  margin: 0.15rem 0 0.4rem;
  border-left: 1px solid var(--border);
}
.docs-nav a.active + .docs-subnav { display: flex; }
.docs-sublink {
  padding: 0.22rem 0.5rem;
  font-size: 0.76rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  line-height: 1.4;
}
.docs-sublink:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.docs-content { min-width: 0; }
.doc-section {
  margin-bottom: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: calc(var(--nav-height) + 1.5rem);
}
.doc-section:last-child { border-bottom: none; }
.doc-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.doc-section h2 .chap-num {
  font-family: var(--font-code);
  font-size: 1rem;
  color: var(--accent);
  font-weight: 400;
}
.doc-section h3 {
  font-size: 1.3rem;
  margin: 2rem 0 1rem;
  color: var(--text-primary);
}
.doc-section h4 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.7rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 700;
}
.doc-section p { margin-bottom: 1rem; color: var(--text-secondary); line-height: 1.85; }
.doc-section ul, .doc-section ol { margin: 0 0 1.2rem 1.4rem; }
.doc-section li { margin-bottom: 0.5rem; color: var(--text-secondary); line-height: 1.7; }
.doc-section strong { color: var(--text-primary); font-weight: 600; }
.doc-section code {
  font-family: var(--font-code);
  font-size: 0.88em;
  padding: 0.15em 0.45em;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--accent);
}
.doc-callout {
  padding: 1.2rem 1.4rem;
  margin: 1.5rem 0;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
}
.doc-callout.warn {
  background: var(--accent-warm-soft);
  border-left-color: var(--accent-warm);
}
.doc-callout p:last-child { margin-bottom: 0; }
.doc-callout .callout-label {
  display: block;
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.doc-callout.warn .callout-label { color: var(--accent-warm); }

/* 文档代码块 */
.doc-code {
  position: relative;
  margin: 1.4rem 0;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.doc-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.copy-btn:hover { color: var(--accent); border-color: var(--border-accent); }
.copy-btn.copied { color: var(--accent); border-color: var(--accent); }
.doc-code pre {
  margin: 0;
  padding: 1.1rem 1.2rem;
  font-family: var(--font-code);
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-secondary);
  overflow-x: auto;
}
.doc-code pre .kw { color: var(--accent); }
.doc-code pre .str { color: var(--rainbow-yellow); }
.doc-code pre .com { color: var(--text-faint); font-style: italic; }
.doc-code pre .fn { color: var(--rainbow-blue); }
.doc-code pre .type { color: var(--rainbow-purple); }
.doc-code pre .num { color: var(--rainbow-orange); }

/* 文档表格 */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4rem 0;
  font-size: 0.92rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.doc-table th, .doc-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.doc-table th {
  background: rgba(99, 226, 183, 0.06);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  font-family: var(--font-code);
}
.doc-table td { color: var(--text-secondary); }
.doc-table tr:last-child td { border-bottom: none; }
.doc-table tr:hover td { background: var(--bg-glass-hover); }
.doc-table code { font-size: 0.85em; }

/* ---------- 下载页 ---------- */
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}
.dl-card {
  position: relative;
  padding: 2.4rem 2rem;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  overflow: hidden;
}
.dl-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.dl-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--dl-color, var(--accent));
  opacity: 0.8;
}
.dl-platform {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.4rem;
}
.dl-platform-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--dl-color, var(--accent));
}
.dl-platform-icon svg { width: 28px; height: 28px; }
.dl-platform h3 { font-size: 1.3rem; }
.dl-platform .ver { font-family: var(--font-code); font-size: 0.8rem; color: var(--text-muted); }

.dl-info { margin-bottom: 1.5rem; }
.dl-info p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.6rem; display: flex; justify-content: space-between; }
.dl-info p .val { color: var(--text-secondary); font-family: var(--font-code); }

.dl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.9rem;
  background: var(--dl-color, var(--accent));
  color: var(--bg-base);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  transition: all var(--transition);
}
.dl-btn:hover {
  filter: brightness(1.1);
  box-shadow: 0 8px 24px var(--dl-color, var(--accent));
}

.req-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}
.req-item {
  padding: 1.3rem 1.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.req-item h4 { font-size: 1rem; margin-bottom: 0.5rem; color: var(--accent); }
.req-item p { font-size: 0.88rem; color: var(--text-muted); }

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg-sunken);
  z-index: 2;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-brand .brand { margin-bottom: 1.2rem; }
.footer-brand p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; max-width: 320px; }
.footer-col h4 {
  font-size: 0.82rem;
  font-family: var(--font-code);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1.2rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a {
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-faint);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }
.footer-bottom .motto {
  font-family: var(--font-display);
  color: var(--accent);
  margin-bottom: 0.6rem;
  font-style: italic;
}
.community-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
  font-size: 0.88rem;
}
.community-links a { color: var(--text-secondary); font-weight: 500; transition: color var(--transition); }
.community-links a:hover { color: var(--accent); }
.community-links .sep { color: var(--text-faint); }

/* ---------- 动画 ---------- */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* 滚动揭示 */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }

/* 首屏入场（无滚动依赖） */
.intro-fade { opacity: 0; animation: fadeUp 0.8s ease forwards; }
.intro-fade.d1 { animation-delay: 0.1s; }
.intro-fade.d2 { animation-delay: 0.25s; }
.intro-fade.d3 { animation-delay: 0.4s; }
.intro-fade.d4 { animation-delay: 0.55s; }
.intro-fade.d5 { animation-delay: 0.7s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid .feature-card:nth-child(2),
  .features-grid .feature-card:nth-child(5) { transform: none; }
  .features-grid .feature-card:nth-child(2):hover,
  .features-grid .feature-card:nth-child(5):hover { transform: translateY(-6px); }
  .themes-grid { grid-template-columns: repeat(2, 1fr); }
  .docs-layout { grid-template-columns: 220px 1fr; gap: 2rem; }
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .mobile-toggle { display: block; }
  .nav-links.open {
    display: flex;
    position: fixed;
    top: var(--nav-height); left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem var(--gutter) 1.5rem;
    background: rgba(10, 14, 20, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open a { padding: 0.9rem 0; border-bottom: 1px solid var(--border); }

  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-code { order: -1; }
  .hero-meta { gap: 1.5rem; }

  .features-grid { grid-template-columns: 1fr; }
  .demo-grid { grid-template-columns: 1fr; }
  .themes-grid { grid-template-columns: 1fr 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .req-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }

  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar {
    position: static;
    max-height: none;
    margin-bottom: 2rem;
    display: none;
  }
  .docs-sidebar.open { display: block; }
  .docs-mobile-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    margin-bottom: 1.5rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
  }

  .ai-stage { height: auto; padding: 1rem; flex-direction: column; gap: 1rem; }
  .ai-core { position: relative; transform: none; left: auto; top: auto; margin: 1rem 0; }
  .ai-node { position: relative; transform: none !important; left: auto !important; right: auto !important; top: auto !important; bottom: auto !important; width: 100%; }
}

@media (max-width: 560px) {
  .themes-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .display-xl { font-size: 2.6rem; }
}

/* 移动端目录切换按钮（默认桌面隐藏） */
.docs-mobile-toggle { display: none; }

/* ---------- 服务页：服务卡片 ---------- */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}
.svc-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: transform 0.4s cubic-bezier(0.22,1,0.36,1), box-shadow 0.4s ease, border-color 0.3s ease;
}
.svc-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-border);
  box-shadow: 0 16px 48px color-mix(in srgb, var(--accent) 14%, transparent), var(--shadow-pop);
}
.svc-icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 1.2rem;
}
.svc-card h3 { font-family: var(--font-display); font-size: 1.25rem; margin-bottom: 0.5rem; }
.svc-card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.6; margin-bottom: 1rem; }
.svc-card ul { list-style: none; }
.svc-card ul li {
  padding: 0.3rem 0 0.3rem 1.2rem;
  color: var(--text-muted);
  font-size: 0.88rem;
  position: relative;
}
.svc-card ul li::before {
  content: ''; position: absolute; left: 0; top: 0.75rem;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
}

/* ---------- 服务页：产品卡片 ---------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}
.prod-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: transform 0.4s cubic-bezier(0.22,1,0.36,1), box-shadow 0.4s ease, border-color 0.3s ease;
}
.prod-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-border);
  box-shadow: var(--shadow-pop);
}
.prod-img {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: top center;
  display: block;
  border-bottom: 1px solid var(--border);
}
.prod-body { padding: 1.8rem; }
.prod-body h3 { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: 0.3rem; }
.prod-subtitle { color: var(--accent); font-size: 0.85rem; font-weight: 600; margin-bottom: 0.8rem; }
.prod-body > p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; margin-bottom: 1rem; }
.prod-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1rem; }
.prod-tag {
  padding: 0.2rem 0.7rem; border-radius: var(--radius-pill);
  background: var(--accent-soft); color: var(--accent);
  font-size: 0.75rem; font-weight: 600;
}
.prod-features { list-style: none; }
.prod-features li {
  padding: 0.3rem 0 0.3rem 1.2rem;
  color: var(--text-muted); font-size: 0.86rem;
  position: relative;
}
.prod-features li::before {
  content: ''; position: absolute; left: 0; top: 0.75rem;
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
}

/* ---------- 服务页：案例卡片 ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}
.case-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.case-card:hover { transform: translateY(-4px); border-color: var(--accent-border); }
.case-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.case-icon {
  width: 48px; height: 48px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md); background: var(--accent-soft); color: var(--accent);
}
.case-card h3 { font-family: var(--font-display); font-size: 1.15rem; }
.case-card .case-client { color: var(--text-muted); font-size: 0.82rem; }
.case-card p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.6; margin-bottom: 1.2rem; }
.case-results { display: flex; gap: 2rem; }
.case-result .num { font-family: var(--font-display); font-size: 1.8rem; font-weight: 700; color: var(--accent); }
.case-result .lbl { color: var(--text-muted); font-size: 0.78rem; }

/* ---------- 服务页：关于我们统计 ---------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin: 2.5rem 0;
}
.stat-box { text-align: center; }
.stat-box .num { font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; color: var(--accent); }
.stat-box .lbl { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.3rem; }
@media (max-width: 768px) {
  .svc-grid, .prod-grid, .case-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .prod-grid { gap: 1.5rem; }
}

/* ---------- 下载弹窗 ---------- */
.dl-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.dl-modal.open { display: flex; }
.dl-modal-box {
  position: relative;
  width: min(460px, 92vw);
  padding: 2.5rem 2rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-elevated, var(--bg-glass-strong, #141821));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  text-align: center;
  animation: dlModalIn 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes dlModalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.dl-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}
.dl-modal-close:hover { background: var(--bg-glass); color: var(--text-primary); transform: rotate(90deg); }
.dl-modal-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
}
.dl-modal-box h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}
.dl-modal-box > p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.8rem;
}
.dl-modal-options {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.dl-modal-option {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-glass);
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.25s ease;
  text-align: left;
}
.dl-modal-option:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateX(4px);
}
.dl-modal-option-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
}
.dl-modal-option-text { flex: 1; }
.dl-modal-option-text strong { display: block; font-size: 1rem; }
.dl-modal-option-text small { color: var(--text-muted); font-size: 0.82rem; }

/* ---------- 开发日志页 ---------- */
.devlog-h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-left: 1rem;
  border-left: 4px solid var(--accent);
  color: var(--text-primary);
}
.devlog-h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2rem 0 0.8rem;
  color: var(--text-primary);
}
.devlog-h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.6rem;
  color: var(--text-primary);
}
.devlog-p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 0.8rem;
}
.devlog-ul {
  list-style: none;
  margin: 0.5rem 0 1.2rem;
  padding-left: 1.2rem;
}
.devlog-ul li {
  position: relative;
  padding: 0.2rem 0 0.2rem 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}
.devlog-ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.devlog-code {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  overflow-x: auto;
  margin: 1rem 0;
}
.devlog-code code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #c9d1d9;
  line-height: 1.6;
}
.devlog-inline-code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
}
.devlog-hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 2.5rem 0;
}
/* 引用块 - 用户原话 */
.devlog-quote {
  margin: 1rem 0 1.2rem;
  padding: 0.8rem 1.2rem;
  border-left: 3px solid var(--accent-warm);
  background: var(--accent-warm-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.devlog-quote p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-style: italic;
  line-height: 1.7;
  margin: 0;
}
.devlog-quote p + p { margin-top: 0.4rem; }
/* 有序列表 - 改动文件清单 */
.devlog-ol {
  margin: 0.5rem 0 1.2rem;
  padding-left: 1.8rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
}
.devlog-ol li {
  padding: 0.2rem 0;
  margin-bottom: 0.3rem;
}
.devlog-ol li::marker {
  color: var(--accent);
  font-weight: 600;
  font-family: var(--font-code);
}
.devlog-ul li code.devlog-inline-code,
.devlog-ol li code.devlog-inline-code {
  cursor: help;
}
/* 表格 - 版本统计/命令清单/对比表 */
.devlog-table-wrap {
  margin: 1rem 0 1.4rem;
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.devlog-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  line-height: 1.6;
}
.devlog-table th,
.devlog-table td {
  padding: 0.55rem 0.8rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.devlog-table th {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  font-family: var(--font-code);
  font-size: 0.82rem;
  white-space: nowrap;
}
.devlog-table tbody tr:last-child td { border-bottom: none; }
.devlog-table tbody tr:hover { background: var(--bg-glass-hover); }
.devlog-table td code.devlog-inline-code { font-size: 0.8em; }
.devlog-table strong { color: var(--text-primary); }
/* 时间线导航 - 版本快速定位 */
/* devlog 两栏布局 - 左侧时间线 + 右侧内容 */
.devlog-layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 2.5rem;
  max-width: 1200px;
}
.devlog-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
  align-self: start;
  max-height: calc(100vh - var(--nav-height) - 3rem);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--accent) 30%, transparent) transparent;
  padding-right: 0.3rem;
}
.devlog-sidebar::-webkit-scrollbar { width: 4px; }
.devlog-sidebar::-webkit-scrollbar-track { background: transparent; }
.devlog-sidebar::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 2px;
}
.devlog-side-title {
  font-family: var(--font-code);
  font-size: 0.74rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.devlog-content { min-width: 0; }

/* 竖向时间线 - 彩虹色线条 + 圆点节点 */
.devlog-timeline {
  position: relative;
  padding-left: 1.2rem;
}
.devlog-timeline::before {
  content: "";
  position: absolute;
  left: 4px; top: 4px; bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg,
    var(--rainbow-red), var(--rainbow-orange), var(--rainbow-yellow),
    var(--rainbow-green), var(--rainbow-blue), var(--rainbow-purple),
    var(--rainbow-pink), var(--rainbow-red), var(--rainbow-orange));
  opacity: 0.35;
  border-radius: 1px;
}
.tl-item {
  display: block;
  position: relative;
  padding: 0.45rem 0 0.55rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.tl-item::before {
  content: "";
  position: absolute;
  left: -7px; top: 0.6rem;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg-base);
  border: 2px solid var(--tl-color, var(--accent));
  box-shadow: 0 0 0 3px var(--bg-base);
  transition: all var(--transition);
  z-index: 1;
}
.tl-item:hover {
  background: var(--accent-soft);
}
.tl-item:hover::before {
  box-shadow: 0 0 14px var(--tl-color, var(--accent)), 0 0 0 3px var(--bg-base);
  transform: scale(1.25);
}
.tl-ver {
  display: block;
  font-family: var(--font-code);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--tl-color, var(--accent));
  line-height: 1.3;
}
.tl-date {
  display: block;
  font-family: var(--font-code);
  font-size: 0.68rem;
  color: var(--text-muted);
  line-height: 1.3;
}
/* 响应式：小屏幕时间线降级为顶部水平滚动 */
@media (max-width: 768px) {
  .devlog-layout {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .devlog-sidebar {
    position: relative;
    top: 0;
    max-height: none;
    overflow: visible;
  }
  .devlog-timeline {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-left: 0;
    padding-bottom: 0.5rem;
    scrollbar-width: thin;
  }
  .devlog-timeline::before { display: none; }
  .tl-item {
    flex-shrink: 0;
    padding: 0.4rem 0.7rem;
    border: 1px solid var(--border);
    background: var(--bg-glass);
  }
  .tl-item::before { display: none; }
}