/* Go SSR：编辑向内容站 + SaaS 信任色（ui-ux-pro-max：editorial / Noto Sans SC） */

:root {
  --background: #f4f6fb;
  --foreground: #0f172a;
  --muted: #64748b;
  --muted-foreground: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-foreground: #f8fafc;
  --primary-soft: color-mix(in srgb, var(--primary) 14%, transparent);
  --link: #1d4ed8;
  --secondary: #eef2f7;
  --secondary-foreground: #1e293b;
  --accent: #e8eef9;
  --accent-foreground: #1e293b;
  --cta: #ea580c;
  --cta-foreground: #fff;
  --cta-soft: color-mix(in srgb, var(--cta) 12%, var(--card));
  --destructive: #dc2626;
  --destructive-foreground: #fef2f2;
  --success: #059669;
  --success-soft: color-mix(in srgb, #10b981 16%, var(--card));
  --card: #ffffff;
  --card-foreground: #1e293b;
  --ring: rgba(37, 99, 235, 0.28);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-2xl: 22px;
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px rgba(15, 23, 42, 0.05), 0 10px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 8px 16px rgba(15, 23, 42, 0.06), 0 24px 48px rgba(15, 23, 42, 0.1);
  --shadow-glow-primary: 0 8px 28px color-mix(in srgb, var(--primary) 22%, transparent);
  --font-sans: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --leading-tight: 1.25;
  --leading-normal: 1.55;
  --leading-relaxed: 1.72;
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --layout-gutter-pct: 20%;
  --bottom-tab-h: 52px;
  --breakpoint-md: 768px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0b1220;
    --foreground: #f1f5f9;
    --muted: #94a3b8;
    --muted-foreground: #94a3b8;
    --border: #334155;
    --primary: #60a5fa;
    --primary-foreground: #0f172a;
    --primary-soft: color-mix(in srgb, var(--primary) 18%, transparent);
    --link: #93c5fd;
    --secondary: #1e293b;
    --secondary-foreground: #f1f5f9;
    --accent: #273449;
    --accent-foreground: #f1f5f9;
    --cta: #fb923c;
    --cta-foreground: #0f172a;
    --cta-soft: color-mix(in srgb, var(--cta) 14%, var(--card));
    --card: #151f32;
    --card-foreground: #f1f5f9;
    --success: #34d399;
    --success-soft: color-mix(in srgb, #10b981 20%, var(--card));
    --ring: rgba(96, 165, 250, 0.35);
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.35);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.28);
    --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.38);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow-primary: 0 8px 32px color-mix(in srgb, var(--primary) 28%, transparent);
  }
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

::selection {
  background: color-mix(in srgb, var(--primary) 18%, transparent);
  color: var(--foreground);
}

body.web-ssr {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--background);
  background-image:
    radial-gradient(ellipse 120% 80% at 100% -10%, color-mix(in srgb, var(--primary) 10%, transparent) 0%, transparent 52%),
    radial-gradient(ellipse 90% 60% at -5% 105%, color-mix(in srgb, var(--cta) 7%, transparent) 0%, transparent 48%),
    radial-gradient(circle at 50% 120%, color-mix(in srgb, var(--foreground) 3%, transparent) 0%, transparent 42%);
  background-attachment: fixed;
  color: var(--foreground);
  line-height: var(--leading-normal);
  font-size: 15px;
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-color-scheme: dark) {
  body.web-ssr {
    background-image:
      radial-gradient(ellipse 100% 70% at 100% 0%, color-mix(in srgb, var(--primary) 14%, transparent) 0%, transparent 45%),
      radial-gradient(ellipse 80% 55% at 0% 100%, color-mix(in srgb, var(--cta) 10%, transparent) 0%, transparent 42%);
  }
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
  color: var(--foreground);
}

h1 { font-size: clamp(1.5rem, 4vw, 2rem); margin: 0 0 0.5em; }
h2 { font-size: 1.25rem; margin: 0 0 0.5em; }
h3 { font-size: 1.1rem; margin: 0 0 0.4em; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--primary) 55%, transparent);
  outline-offset: 2px;
}

button:focus-visible,
.btn:focus-visible,
.top-nav-menu a:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--primary) 55%, transparent);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

code,
kbd {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.15em 0.45em;
  border-radius: var(--radius-sm);
  background: var(--secondary);
  border: 1px solid var(--border);
}

kbd {
  font-size: 0.8em;
  box-shadow: 0 1px 0 var(--border);
}

/* 桌面：左右各留约 20%；手机：不额外留白，由 container 小内边距贴边铺满 */
.page-gutter {
  padding-left: max(0px, env(safe-area-inset-left));
  padding-right: max(0px, env(safe-area-inset-right));
}

@media (min-width: 768px) {
  .page-gutter {
    padding-left: calc(var(--layout-gutter-pct) + env(safe-area-inset-left, 0px));
    padding-right: calc(var(--layout-gutter-pct) + env(safe-area-inset-right, 0px));
  }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (max-width: 767px) {
  .container {
    max-width: none;
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
  }
}

.container--narrow {
  max-width: 720px;
}

.container--tight {
  max-width: 640px;
}

/* 顶栏 */
.top-banner {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  background: color-mix(in srgb, var(--card) 88%, transparent);
}

.top-banner::after {
  content: "";
  display: block;
  height: 2px;
  margin: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in srgb, var(--primary) 55%, transparent) 22%,
    color-mix(in srgb, var(--cta) 45%, transparent) 78%,
    transparent 100%
  );
  opacity: 0.85;
}

.top-banner-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0 12px;
}

.top-slogan {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--muted-foreground);
  padding: 4px 0;
}

.top-nav-menu {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 14px;
}

.top-nav-menu a {
  color: var(--foreground);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.top-nav-menu a:hover {
  background: var(--primary-soft);
  color: var(--primary);
  text-decoration: none;
  box-shadow: 0 1px 0 color-mix(in srgb, var(--primary) 25%, transparent);
}

/* 门户顶栏：站点名 + 多级栏目（大屏 hover 下拉，小屏纵向子列表） */
.top-banner-content--portal {
  flex-direction: column;
  align-items: stretch;
  gap: 0.5rem 12px;
  padding-bottom: 10px;
}

@media (min-width: 768px) {
  .top-banner-content--portal {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
  }
}

.top-site-brand {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--foreground);
  text-decoration: none;
  padding: 6px 0;
  flex-shrink: 0;
}

.top-site-brand:hover {
  color: var(--primary);
}

.eco-mega-nav {
  flex: 1;
  min-width: 0;
}

.eco-mega-nav__row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 2px 4px;
}

.eco-mega-nav__uti {
  color: var(--foreground);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  white-space: nowrap;
}

.eco-mega-nav__uti:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.eco-mega-nav__sep {
  flex: 0 0 auto;
  min-width: 4px;
}

@media (min-width: 900px) {
  .eco-mega-nav__sep {
    flex: 1 1 auto;
  }
}

.eco-mega-nav__item {
  position: relative;
}

.eco-mega-nav__item--sub {
  padding-bottom: 4px;
}

.eco-mega-nav__top {
  display: inline-block;
  color: var(--foreground);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  white-space: nowrap;
}

.eco-mega-nav__top:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.eco-mega-nav__sub {
  list-style: none;
  margin: 0;
  padding: 0;
}

.eco-mega-nav__sub a {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--foreground);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.eco-mega-nav__sub a:hover {
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
}

@media (min-width: 900px) {
  .eco-mega-nav__item--sub .eco-mega-nav__sub {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 60;
    min-width: 168px;
    padding: 6px;
    margin-top: -2px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
  }

  .eco-mega-nav__item--sub:hover .eco-mega-nav__sub,
  .eco-mega-nav__item--sub:focus-within .eco-mega-nav__sub {
    display: block;
  }
}

@media (max-width: 899px) {
  .eco-mega-nav__row {
    gap: 0;
  }

  .eco-mega-nav__item--sub .eco-mega-nav__sub {
    margin: 0 0 6px 10px;
    padding: 4px 0 4px 10px;
    border-left: 2px solid color-mix(in srgb, var(--border) 80%, transparent);
  }
}

/* 全站顶栏下方横幅广告（与 emlog_advertisement 当前有效记录一致） */
.site-top-ad {
  border-bottom: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
  background: color-mix(in srgb, var(--secondary) 38%, var(--background));
}

.site-top-ad__inner {
  padding: 10px 0 12px;
}

.site-top-ad__link {
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-fast);
  cursor: pointer;
}

.site-top-ad__link:hover {
  box-shadow: var(--shadow-sm);
}

.site-top-ad__link:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--primary) 45%, transparent);
  outline-offset: 2px;
}

.site-top-ad__img {
  width: 100%;
  height: auto;
  max-height: 140px;
  object-fit: contain;
  display: block;
  vertical-align: middle;
}

/* 站内关联（文章底 / 分类列表 / 搜索页）：分类、子类、标签、文章、导航来源、常用入口 */
.internal-link-hub {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  margin-top: 1.5rem;
  padding: 1rem 1.1rem 1.15rem;
  border-radius: var(--radius-xl);
  border: 1px solid color-mix(in srgb, var(--border) 88%, var(--foreground));
  background: color-mix(in srgb, var(--card) 96%, var(--secondary));
  box-shadow: var(--shadow-xs);
}

@media (min-width: 768px) {
  .internal-link-hub {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem 1.25rem;
    align-items: start;
  }
}

.internal-link-hub__block {
  margin: 0;
  min-width: 0;
}

.internal-link-hub__h {
  margin: 0 0 0.45rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--foreground);
}

.internal-link-hub__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.65rem;
}

.internal-link-hub__list li {
  margin: 0;
}

.internal-link-hub__list a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--link);
  text-decoration: none;
  cursor: pointer;
}

.internal-link-hub__list a:hover {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.internal-link-hub__list--tags a {
  font-size: 0.78rem;
  font-weight: 400;
}

.internal-link-hub__list--article,
.internal-link-hub__list--refs {
  flex-direction: column;
  flex-wrap: nowrap;
  gap: 0.2rem 0;
  max-height: 12.5rem;
  overflow-y: auto;
}

.internal-link-hub__list--article li,
.internal-link-hub__list--refs li {
  min-width: 0;
}

.internal-link-hub__list--article a,
.internal-link-hub__list--refs a {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  line-height: 1.35;
}

.internal-link-hub__list--tools {
  gap: 0.35rem 1rem;
}

.main-area {
  min-height: 48vh;
  /* 仅上下内边距；左右留白由 .page-gutter 负责，勿用 padding 简写否则会清掉 20% */
  padding-top: 28px;
  padding-bottom: 64px;
}

@media (max-width: 767px) {
  .main-area {
    padding-bottom: calc(24px + var(--bottom-tab-h) + env(safe-area-inset-bottom, 0px));
  }
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 0 0 24px;
  margin-top: auto;
  background: color-mix(in srgb, var(--card) 94%, var(--background));
  box-shadow: 0 -1px 0 color-mix(in srgb, var(--border) 60%, transparent);
}

.site-footer-inner {
  padding-top: 16px;
}

.site-footer .muted {
  margin: 0;
  text-align: center;
}

/* 页脚横向菜单（桌面与平板显示；手机改用底部 Tab） */
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 20px;
  padding: 20px 0 16px;
  border-bottom: 1px solid var(--border);
}

.footer-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--foreground);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.footer-nav a:hover {
  background: var(--accent);
  text-decoration: none;
}

@media (max-width: 767px) {
  .footer-nav {
    display: none;
  }

  .site-footer {
    padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }
}

/* 手机底部固定快捷导航 */
.bottom-tab-bar {
  display: none;
}

@media (max-width: 767px) {
  .bottom-tab-bar {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    min-height: var(--bottom-tab-h);
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom, 0px));
    margin: 0;
    background: color-mix(in srgb, var(--card) 96%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
    justify-content: space-around;
    align-items: stretch;
    gap: 2px;
  }

  .bottom-tab-bar__item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-width: 0;
    padding: 4px 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--muted-foreground);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background var(--transition-fast);
  }

  .bottom-tab-bar__item:hover,
  .bottom-tab-bar__item:active {
    color: var(--foreground);
    background: var(--accent);
  }

  .bottom-tab-bar__icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    opacity: 0.92;
    stroke: currentColor;
  }

  .bottom-tab-bar__label {
    line-height: 1.2;
    white-space: nowrap;
  }
}

body.web-ssr {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.web-ssr .main-area {
  flex: 1;
}

.muted {
  color: var(--muted-foreground);
  font-size: 14px;
}

.meta-line {
  font-size: 14px;
  color: var(--muted-foreground);
  margin: 0 0 12px;
}

.card {
  background: var(--card);
  color: var(--card-foreground);
  border: 1px solid color-mix(in srgb, var(--border) 92%, var(--foreground));
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
  transition:
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base);
}

.card:hover {
  border-color: color-mix(in srgb, var(--primary) 22%, var(--border));
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card h2 {
  margin: 0 0 12px;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--foreground);
  position: relative;
}

.card h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(56px, 35%);
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(
    90deg,
    var(--primary),
    color-mix(in srgb, var(--cta) 65%, var(--primary))
  );
}

.home-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.home-list li {
  margin: 0;
}

.home-list a {
  color: var(--foreground);
  text-decoration: none;
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.home-list a:hover {
  background: var(--card);
  border-color: color-mix(in srgb, var(--border) 70%, var(--primary));
  box-shadow: var(--shadow-xs);
  transform: translateX(4px);
}

.home-list small {
  font-weight: 400;
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.nav-card {
  display: flex;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--card);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}

.nav-card:hover {
  border-color: var(--muted);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.nav-card img {
  flex-shrink: 0;
  border-radius: var(--radius-sm);
}

/* 列表页：分类 / 搜索 */
.page-listing {
  padding: 8px 0 32px;
}

.page-listing h1 {
  margin-bottom: 24px;
  padding-bottom: 16px;
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.page-listing h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 72px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--cta));
}

.search-form-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 560px;
  margin-bottom: 24px;
}

@media (min-width: 480px) {
  .search-form-row {
    flex-direction: row;
    align-items: stretch;
  }
  .search-form-row input[type="search"] {
    flex: 1;
  }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(
    165deg,
    color-mix(in srgb, var(--primary) 92%, #fff) 0%,
    var(--primary) 48%,
    color-mix(in srgb, var(--primary) 88%, #000) 100%
  );
  color: var(--primary-foreground);
  border: 1px solid color-mix(in srgb, var(--primary) 35%, transparent);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  text-decoration: none;
  line-height: 1.2;
  box-shadow:
    0 1px 0 color-mix(in srgb, #fff 22%, transparent) inset,
    var(--shadow-xs),
    0 4px 14px color-mix(in srgb, var(--primary) 18%, transparent);
  transition:
    filter var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.btn:hover {
  filter: brightness(1.04);
  box-shadow:
    0 1px 0 color-mix(in srgb, #fff 28%, transparent) inset,
    var(--shadow-sm),
    var(--shadow-glow-primary);
}

.btn:active {
  transform: scale(0.985);
  filter: brightness(0.97);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  filter: none;
  box-shadow: none;
}

@media (prefers-color-scheme: dark) {
  .btn:not(.btn-secondary):not(.btn-outline):not(.btn-ghost) {
    background: linear-gradient(
      165deg,
      color-mix(in srgb, var(--primary) 108%, #38bdf8) 0%,
      var(--primary) 45%,
      color-mix(in srgb, var(--primary) 55%, #1e3a5f) 100%
    );
    border-color: color-mix(in srgb, var(--primary) 40%, transparent);
    box-shadow:
      0 1px 0 color-mix(in srgb, #fff 12%, transparent) inset,
      var(--shadow-xs),
      0 4px 20px color-mix(in srgb, var(--primary) 25%, transparent);
  }
}

.btn-secondary {
  background: var(--secondary);
  color: var(--secondary-foreground);
  border-color: var(--border);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  box-shadow: var(--shadow-sm);
  filter: none;
}

.btn-outline {
  background: var(--card);
  color: var(--foreground);
  border-color: color-mix(in srgb, var(--border) 85%, var(--foreground));
  box-shadow: var(--shadow-xs);
}

.btn-outline:hover {
  background: var(--accent);
  border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
  box-shadow: var(--shadow-sm);
  filter: none;
}

.btn-ghost {
  background: transparent;
  color: var(--foreground);
  border-color: transparent;
  box-shadow: none;
}

.btn-ghost:hover {
  background: var(--accent);
  filter: none;
  box-shadow: none;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

/* 表单 */
.form-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 400px;
}

.form-stack input,
.form-stack textarea,
.profile-form input,
.profile-form textarea,
.auth-form input {
  width: 100%;
}

.form-stack input,
.form-stack textarea {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-family: inherit;
  background: var(--card);
  color: var(--foreground);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-stack input::placeholder,
.auth-form input::placeholder {
  color: var(--muted-foreground);
  opacity: 0.8;
}

.form-stack input:hover,
.auth-form input:hover {
  border-color: color-mix(in srgb, var(--border) 50%, var(--foreground));
}

.form-stack input:focus,
.auth-form input:focus,
.profile-form input:focus,
.profile-form textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  box-shadow: 0 0 0 3px var(--ring);
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.pagination a {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--foreground);
  font-size: 14px;
  font-weight: 500;
  background: var(--card);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.pagination a:hover {
  background: var(--accent);
  border-color: var(--muted);
}

.pagination span {
  font-size: 14px;
  color: var(--muted-foreground);
}

.alert {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: #fef3c7;
  color: #92400e;
  margin: 12px 0;
  border: 1px solid #fcd34d;
}

@media (prefers-color-scheme: dark) {
  .alert {
    background: rgba(180, 83, 9, 0.2);
    color: #fcd34d;
    border-color: rgba(251, 191, 36, 0.35);
  }
}

/* 静态页：404 / 合作 / 后台 */
.static-page {
  padding: 40px 16px 56px;
}

.static-page--center {
  text-align: center;
  max-width: 520px;
  margin: 0 auto;
}

.static-page h1 {
  margin-bottom: 12px;
}

.static-page .btn {
  margin-top: 16px;
  display: inline-flex;
}

.static-page--center .btn {
  margin-top: 20px;
}

.static-prose {
  max-width: 640px;
  margin: 0 auto;
}

.static-prose header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.admin-hint code {
  word-break: break-all;
}

/* 导航列表页 */
.nav-page {
  min-height: 50vh;
  padding: 28px 0 48px;
  background: color-mix(in srgb, var(--secondary) 40%, var(--background));
}

.nav-page-header {
  text-align: center;
  margin-bottom: 28px;
}

.nav-page-title {
  font-size: 1.6rem;
  margin: 0 0 8px;
}

.nav-page-subtitle {
  font-size: 0.94rem;
  color: var(--muted-foreground);
  margin: 0;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--leading-relaxed);
}

.nav-page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.nav-page-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}

.nav-page-card:hover {
  border-color: color-mix(in srgb, var(--primary) 25%, var(--border));
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.nav-page-favicon,
.nav-page-favicon-placeholder {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  object-fit: contain;
  flex-shrink: 0;
}

.nav-page-favicon-placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary);
  color: var(--muted-foreground);
  font-size: 12px;
  border: 1px solid var(--border);
}

.nav-page-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.nav-page-name {
  font-weight: 600;
  font-size: 0.94rem;
}

.nav-page-desc {
  font-size: 0.82rem;
  color: var(--muted-foreground);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.nav-page-empty {
  text-align: center;
  color: var(--muted-foreground);
  margin: 40px 0;
  padding: 32px;
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}

.nav-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 32px;
}

.nav-pagination-btn,
.nav-pagination-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--card);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.nav-pagination-btn:hover:not(.nav-pagination-disabled),
.nav-pagination-num:hover {
  border-color: #2563eb;
  color: #2563eb;
  background: color-mix(in srgb, #2563eb 6%, var(--card));
}

.nav-pagination-current {
  background: #2563eb;
  border-color: #2563eb;
  color: #fff;
}

.nav-pagination-current:hover {
  background: #2563eb;
  color: #fff;
  border-color: #2563eb;
}

.nav-pagination-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.nav-pagination-nums {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

/* 外链跳转 */
.go-page {
  min-height: 50vh;
  padding: 48px 16px 72px;
  background: color-mix(in srgb, var(--secondary) 40%, var(--background));
  display: flex;
  flex-direction: column;
  align-items: center;
}

.go-header {
  text-align: center;
  margin-bottom: 32px;
  max-width: 640px;
}

.go-page-title {
  font-size: 1.75rem;
  margin: 0 0 8px;
}

.go-page-subtitle {
  color: var(--muted-foreground);
  margin: 0;
  line-height: var(--leading-relaxed);
}

.go-sections {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.go-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 26px;
  box-shadow: var(--shadow-md);
}

.go-section-title {
  font-size: 1.12rem;
  text-align: center;
  margin: 0 0 8px;
}

.go-section-desc {
  text-align: center;
  color: var(--muted-foreground);
  font-size: 0.88rem;
  margin: 0 0 16px;
}

.go-site-info {
  text-align: left;
  margin: 16px 0 22px;
}

.go-site-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.go-site-favicon,
.go-site-favicon-placeholder {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  object-fit: contain;
  border: 1px solid var(--border);
}

.go-site-favicon-placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary);
  color: var(--muted-foreground);
}

.go-site-title {
  font-size: 1.2rem;
  margin: 0 0 6px;
}

.go-site-url {
  font-size: 0.8rem;
  color: var(--muted-foreground);
  word-break: break-all;
  margin: 0;
}

.go-site-desc {
  font-size: 0.94rem;
  color: var(--muted-foreground);
  line-height: var(--leading-relaxed);
  margin: 8px 0 0;
}

.go-desc {
  color: var(--muted-foreground);
  margin: 0 0 8px;
}

.go-url {
  font-size: 0.88rem;
  color: #2563eb;
  word-break: break-all;
  padding: 14px 16px;
  background: var(--secondary);
  border-radius: var(--radius-md);
  margin: 0 0 14px;
  border: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  .go-url {
    color: #93c5fd;
  }
}

.go-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.go-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.94rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: opacity var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.go-btn:hover {
  opacity: 0.95;
}

.go-btn:active {
  transform: scale(0.98);
}

.go-btn-primary {
  background: #2563eb;
  color: #fff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

.go-btn-ghost {
  background: var(--secondary);
  color: var(--foreground);
  border-color: var(--border);
}

.go-same-kind-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.go-same-kind-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-base), background var(--transition-fast);
}

.go-same-kind-card:hover {
  border-color: var(--muted);
  background: var(--accent);
}

.go-same-kind-favicon,
.go-same-kind-favicon-placeholder {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  object-fit: contain;
  flex-shrink: 0;
}

.go-same-kind-favicon-placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--card);
  font-size: 13px;
  color: var(--muted-foreground);
  border: 1px solid var(--border);
}

.go-same-kind-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.go-same-kind-name {
  font-weight: 600;
  font-size: 0.94rem;
}

.go-same-kind-desc {
  font-size: 0.8rem;
  color: var(--muted-foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.go-same-kind-btn {
  flex-shrink: 0;
  padding: 6px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--primary);
  color: var(--primary-foreground);
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent);
  box-shadow: var(--shadow-xs);
  transition: filter var(--transition-fast), box-shadow var(--transition-fast);
}

.go-same-kind-btn:hover {
  filter: brightness(1.06);
  box-shadow: var(--shadow-sm);
}

/* 登录注册 */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
  background-color: var(--background);
  background-image:
    radial-gradient(ellipse 100% 70% at 80% 10%, color-mix(in srgb, var(--primary) 14%, transparent) 0%, transparent 50%),
    radial-gradient(ellipse 80% 60% at 10% 90%, color-mix(in srgb, var(--cta) 10%, transparent) 0%, transparent 55%),
    radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--foreground) 2.5%, transparent) 0%, transparent 65%);
}

.auth-page::before,
.auth-page::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
}

.auth-page::before {
  width: min(420px, 55vw);
  height: min(420px, 55vw);
  top: -12%;
  right: -8%;
  background: color-mix(in srgb, var(--primary) 35%, transparent);
}

.auth-page::after {
  width: min(360px, 50vw);
  height: min(360px, 50vw);
  bottom: -15%;
  left: -10%;
  background: color-mix(in srgb, var(--cta) 28%, transparent);
}

.auth-container {
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
}

.auth-card {
  background: color-mix(in srgb, var(--card) 94%, transparent);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-radius: var(--radius-2xl);
  padding: 44px 36px;
  border: 1px solid color-mix(in srgb, var(--border) 75%, var(--primary));
  box-shadow:
    var(--shadow-lg),
    0 0 0 1px color-mix(in srgb, var(--card) 50%, transparent) inset;
}

.auth-header {
  text-align: center;
  margin-bottom: 30px;
}

.auth-header h1 {
  margin: 0 0 10px;
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.auth-header p {
  margin: 0;
  color: var(--muted-foreground);
  font-size: 0.94rem;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.auth-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.auth-form label {
  font-weight: 600;
  font-size: 0.88rem;
}

.auth-form input {
  padding: 13px 16px;
  border: 1px solid color-mix(in srgb, var(--border) 88%, var(--foreground));
  border-radius: var(--radius-md);
  font-size: 15px;
  background: color-mix(in srgb, var(--card) 92%, var(--background));
  color: var(--foreground);
  box-shadow: 0 1px 2px color-mix(in srgb, var(--foreground) 4%, transparent) inset;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.auth-form input:hover {
  border-color: color-mix(in srgb, var(--primary) 25%, var(--border));
}

.auth-form .form-actions {
  margin-top: 4px;
}

.auth-footer {
  text-align: center;
  margin-top: 20px;
  font-size: 0.88rem;
  color: var(--muted-foreground);
}

.auth-footer p {
  margin: 8px 0;
}

.auth-footer a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

.auth-footer a:hover {
  text-decoration: underline;
}

/* 用户中心 */
.user-center {
  padding: 28px 0 56px;
  min-height: 50vh;
}

.user-header h1 {
  margin: 0 0 24px;
  font-size: 1.75rem;
}

.user-content {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
}

.user-sidebar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  height: fit-content;
  box-shadow: var(--shadow-sm);
}

.user-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.user-nav .nav-item {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  font-size: 14px;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.user-nav .nav-item:hover,
.user-nav .nav-item.active {
  background: var(--accent);
  color: var(--primary);
}

.user-main {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.profile-section h2 {
  margin: 0 0 20px;
  font-size: 1.3rem;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.profile-form .form-group {
  margin-bottom: 18px;
}

.profile-form label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 14px;
}

.profile-form input,
.profile-form textarea {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--card);
  color: var(--foreground);
}

.profile-form textarea {
  min-height: 120px;
  resize: vertical;
}

.form-actions {
  margin-top: 8px;
}

.avatar-upload {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.avatar-upload img {
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

@media (max-width: 768px) {
  .user-content {
    grid-template-columns: 1fr;
  }

  .user-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

/* 支付成功 */
.payment-success-page {
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 0;
}

.success-box {
  max-width: 500px;
  width: 100%;
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: 44px 32px;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.success-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 22px;
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--success-soft);
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--success) 40%, var(--border));
  box-shadow: 0 8px 24px color-mix(in srgb, var(--success) 18%, transparent);
}

.success-title {
  font-size: 1.75rem;
  margin: 0 0 12px;
}

.success-message {
  color: var(--muted-foreground);
  margin: 0 0 18px;
  line-height: var(--leading-relaxed);
}

.article-link {
  margin-bottom: 20px;
}

.article-link a {
  color: var(--link);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--link) 40%, transparent);
  text-underline-offset: 3px;
}

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

.countdown {
  color: var(--muted-foreground);
  font-size: 0.9rem;
}

.countdown #countdown {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
}




.top-nav-menu a,
.footer-nav a,
.bottom-tab-bar__item,
.nav-page-card,
.go-btn,
.download-cta,
.pay-modal__submit {
  cursor: pointer;
}

@media print {
  .top-banner,
  .site-footer,
  .bottom-tab-bar,
  .go-actions,
  .pagination,
  .nav-pagination,
  .pay-modal {
    display: none !important;
  }

  .page-gutter {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  body.web-ssr {
    background: #fff;
    color: #000;
  }

  .main-area {
    padding: 0;
  }
}