/* ==========================================================================
   Angles — 站点样式
   设计系统参照 wslui.com 风格：浅色底、蓝色主色、卡片网格、渐变标题
   ========================================================================== */

:root {
  /* 主色 */
  --color-primary: #0066FF;
  --color-primary-dark: #3385FF;
  --color-secondary: #00C6FF;
  --color-accent: #8A2BE2;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* 中性色 */
  --color-bg: #FFFFFF;
  --color-bg-secondary: #F1F5F9;
  --color-text: #111827;
  --color-text-secondary: #4B5563;
  --color-border: #E5E7EB;
  --color-footer-bg: #FFFFFF;
  --color-footer-text: #111827;
  --color-muted-bg: #F8FAFC;

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #0066FF 0%, #00C6FF 100%);
  --gradient-text: linear-gradient(to right, #0066FF, #8A2BE2);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);
  --shadow-glow: 0 0 20px rgba(0, 102, 255, .4);

  /* 字体 */
  --font-sans: "Inter", "Segoe UI Variable", "PingFang SC", "Microsoft YaHei",
               system-ui, -apple-system, sans-serif;
  --font-mono: "Cascadia Code", "Fira Code", Consolas, "SF Mono", monospace;

  /* 布局 */
  --header-height: 65px;
  --container-max: 1200px;
}

[data-theme="dark"] {
  --color-primary: #3385FF;
  --color-secondary: #00C6FF;
  --color-bg: #0B0F19;
  --color-bg-secondary: #111827;
  --color-muted-bg: #0F1521;
  --color-text: #F3F4F6;
  --color-text-secondary: #9CA3AF;
  --color-border: #1F2937;
  --color-footer-bg: #0B0F19;
  --color-footer-text: #F3F4F6;
  --gradient-text: linear-gradient(to right, #60CDFF, #D094FF);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .3), 0 2px 4px -1px rgba(0, 0, 0, .2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .4), 0 4px 6px -2px rgba(0, 0, 0, .2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .4), 0 10px 10px -5px rgba(0, 0, 0, .2);
  --shadow-glow: 0 0 25px rgba(51, 133, 255, .3);
}

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

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ───────────────────────────────────────────────────────────── */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, .85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
}

[data-theme="dark"] .header { background: rgba(11, 15, 25, .85); }

.header-inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 24px;
  min-width: 0;
}

.logo { display: flex; align-items: center; gap: 12px; flex: none; min-width: 0; }

.logo-mark {
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: 8px;
  background: var(--gradient-primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
}

.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.site-title { font-size: 19px; font-weight: 700; color: var(--color-text); }
.site-url { font-size: 11px; color: var(--color-text-secondary); font-family: var(--font-mono); }

.nav { display: flex; align-items: center; gap: 26px; margin-left: 24px; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  transition: color .2s;
  white-space: nowrap;
}
.nav-link:hover { color: var(--color-primary); }
.nav-icon { font-size: 16px; }

.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; flex: none; }

/* 移动端菜单按钮（桌面隐藏） */
.menu-btn { display: none; }

/* 移动端下拉菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  z-index: 99;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: 8px 0 12px;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:active { background: var(--color-bg-secondary); }

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 15px;
  transition: background .2s, border-color .2s;
}
.icon-btn:hover { background: var(--color-bg-secondary); border-color: var(--color-primary); }

.lang-btn {
  height: 36px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
}
.lang-btn:hover { background: var(--color-bg-secondary); }

/* ── Hero ─────────────────────────────────────────────────────────────── */

.hero {
  position: relative;
  padding: 60px 0;
  background: var(--color-bg-secondary);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 102, 255, .15) 0%, rgba(138, 43, 226, .05) 40%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.02em;
  margin-bottom: 24px;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  max-width: 540px;
}

.hero-version {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 8px 20px;
  margin-bottom: 32px;
  background: rgba(0, 102, 255, .05);
  border: 1px solid rgba(0, 102, 255, .1);
  border-radius: var(--radius-lg);
  font-size: .875rem;
}
.hero-version .label { color: var(--color-text-secondary); font-weight: 500; }
.hero-version .version { color: var(--color-primary); font-weight: 600; font-family: var(--font-mono); }
.hero-version .divider { color: var(--color-border); }

.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .2s, box-shadow .2s, background .2s;
}
.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* 终端窗口 */
.term {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: #0d1117;
  border: 1px solid var(--color-border);
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 15px;
  background: #161b22;
  border-bottom: 1px solid #21262d;
}
.term-dot { width: 11px; height: 11px; border-radius: 50%; }
.term-dot.r { background: #ff5f57; }
.term-dot.y { background: #febc2e; }
.term-dot.g { background: #28c840; }
.term-title {
  margin-left: 10px;
  font-size: 12px;
  color: #8b949e;
  font-family: var(--font-mono);
}
.term-body {
  padding: 18px 20px 22px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.85;
  color: #c9d1d9;
  white-space: pre-wrap;
  word-break: break-word;
}
.term-body .pr { color: #58a6ff; }
.term-body .cm { color: #6e7681; }
.term-body .ok { color: #3fb950; }
.term-body .out { color: #d29922; }

/* ── Section ──────────────────────────────────────────────────────────── */

.section { padding: 80px 0; }
.section.alt { background: var(--color-bg-secondary); }

.section-title { text-align: center; margin-bottom: 52px; }
.section-title h2 {
  font-size: clamp(1.8rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 12px;
}
.section-title p { font-size: 1.05rem; color: var(--color-text-secondary); }

/* ── 功能卡片 ─────────────────────────────────────────────────────────── */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 102, 255, .3);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-size: 26px;
  margin-bottom: 18px;
  background: rgba(0, 102, 255, .08);
}
.feature-icon.green  { background: rgba(16, 185, 129, .1); }
.feature-icon.purple { background: rgba(138, 43, 226, .1); }
.feature-icon.orange { background: rgba(245, 158, 11, .1); }
.feature-icon.cyan   { background: rgba(0, 198, 255, .1); }
.feature-icon.red    { background: rgba(239, 68, 68, .1); }

.feature-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: .925rem; color: var(--color-text-secondary); line-height: 1.7; }

/* ── 安装步骤 ─────────────────────────────────────────────────────────── */

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }

.step {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  font-size: 17px;
}
.step:nth-child(1) .step-num { background: var(--gradient-primary); }
.step:nth-child(2) .step-num { background: linear-gradient(135deg, #8A2BE2, #0066FF); }
.step:nth-child(3) .step-num { background: linear-gradient(135deg, #10B981, #00C6FF); }

.step h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.step p { font-size: .9rem; color: var(--color-text-secondary); }

.step code {
  font-family: var(--font-mono);
  font-size: .82rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 7px;
  word-break: break-all;
}

/* ── 项目列表 ─────────────────────────────────────────────────────────── */

.repo-list { display: flex; flex-direction: column; gap: 14px; max-width: 860px; margin: 0 auto; }

.repo {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.repo:hover {
  transform: translateX(4px);
  border-color: rgba(0, 102, 255, .35);
  box-shadow: var(--shadow-md);
}

.repo-name {
  font-weight: 700;
  font-size: .98rem;
  color: var(--color-primary);
  font-family: var(--font-mono);
  flex: none;
}
.repo-desc { font-size: .9rem; color: var(--color-text-secondary); flex: 1; }
.repo-star {
  flex: none;
  font-size: .82rem;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

/* ── 赞助 ─────────────────────────────────────────────────────────────── */

.donate-card {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  padding: 36px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.donate-card h3 { font-size: 1.2rem; margin-bottom: 14px; }
.donate-card p { font-size: .95rem; color: var(--color-text-secondary); margin-bottom: 12px; }
.donate-card .em { color: var(--color-primary); font-weight: 600; }

.qr {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 12px;
  box-shadow: var(--shadow-md);
}
.qr img { display: block; width: 200px; height: 200px; border-radius: var(--radius-sm); }
.qr figcaption {
  text-align: center;
  font-size: 12px;
  color: #5a6472;
  padding-top: 9px;
}

/* ── Footer ───────────────────────────────────────────────────────────── */

.footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  border-top: 1px solid var(--color-border);
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand a { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-description {
  font-size: .9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 480px;
}

.footer-links h4 {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
}
.footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links li a {
  font-size: .9rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color .2s;
}
.footer-links li a:hover { color: var(--color-primary); }

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: .85rem;
  color: var(--color-text-secondary);
  text-align: center;
}
.footer-bottom a { color: var(--color-primary); }

/* ── 响应式 ───────────────────────────────────────────────────────────── */

@media (max-width: 960px) {
  .nav { display: none; }
  .menu-btn { display: grid; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-subtitle { max-width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .donate-card { grid-template-columns: 1fr; gap: 26px; }
  .qr { margin: 0 auto; }
  body { overflow-x: hidden; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .donate-codes { flex-direction: row; gap: 12px; }
  .donate-codes .qr { padding: 8px; }
  .donate-codes .qr img { width: 130px; height: 130px; }
  .section { padding: 56px 0; }
  .hero { padding: 44px 0; }
  .site-url { display: none; }
  .site-title { font-size: 17px; }
  .logo-mark { width: 30px; height: 30px; font-size: 18px; }
  .nav { gap: 18px; }
  .term-body { font-size: 12px; }
  .repo { flex-wrap: wrap; gap: 8px; }
  .step { padding: 22px; gap: 14px; }
  .feature-card { padding: 24px; }
  .donate-card { padding: 26px; }
  .qr img { width: 170px; height: 170px; }
  .hero-version { flex-wrap: wrap; gap: 10px; padding: 8px 16px; font-size: .8rem; }
  .hero-buttons .btn { flex: 1; justify-content: center; min-width: 130px; }
}