@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Source+Sans+3:wght@300;400;500;600;700&display=swap');

/* ===========================
   CSS 变量 & 重置
   =========================== */
:root {
  --c-primary: #6514ff;
  --c-accent: #bf00ff;
  --c-dark: #1c1726;
  --c-dark2: #251e34;
  --c-dark3: #2e2545;
  --c-text: #f0eaff;
  --c-text-muted: #b8a8d8;
  --c-border: rgba(101,20,255,0.35);
  --c-glass: rgba(37,29,52,0.72);
  --c-glass-border: rgba(191,0,255,0.28);
  --nav-h: 56px;
  --radius: 4px;
  --font-head: 'Bebas Neue', 'Arial Black', sans-serif;
  --font-body: 'Source Sans 3', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --gap: 48px;
  --gap-sm: 24px;
  --max-w: 1160px;
  --trans: 220ms ease;
}

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

html {
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-dark);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--c-dark);
  min-height: 100vh;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-accent); text-decoration: none; transition: color var(--trans); }
a:hover { color: #fff; }
ul, ol, menu { list-style: none; }

/* ===========================
   动画 Keyframes
   =========================== */
@keyframes patternMove {
  0% { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 16px rgba(101,20,255,0.5); }
  50% { box-shadow: 0 0 32px rgba(191,0,255,0.8); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===========================
   全局包装
   =========================== */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-bottom: calc(var(--nav-h) + 8px);
}

/* ===========================
   底部固定导航 (details > summary + menu > li > a)
   =========================== */
.mobile-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(18,12,30,0.97);
  border-top: 2px solid var(--c-primary);
  backdrop-filter: blur(12px);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  padding: 0 12px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  gap: 8px;
}

.nav-bar::-webkit-details-marker { display: none; }

.nav-brand {
  font-family: var(--font-head);
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  color: #fff;
  white-space: nowrap;
  padding: 8px 4px;
  flex-shrink: 0;
}

.nav-brand:hover { color: var(--c-accent); }

.nav-brand-left,
.nav-brand-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}

.nav-brand-right { justify-content: flex-end; }

.nav-link-side {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
  padding: 8px 4px;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.nav-link-side:hover { color: var(--c-text); }

.nav-cta {
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius);
  min-height: 40px;
  display: flex;
  align-items: center;
  white-space: nowrap;
  transition: opacity var(--trans);
}

.nav-cta:hover { opacity: 0.85; color: #fff; }

.mobile-nav[open] .nav-bar {
  border-bottom: 1px solid var(--c-border);
}

.nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 10px 12px 14px;
  background: rgba(18,12,30,0.99);
  animation: fadeUp 180ms ease;
}

.nav-menu li a {
  display: block;
  padding: 9px 14px;
  font-size: 0.88rem;
  color: var(--c-text-muted);
  border-radius: var(--radius);
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: background var(--trans), color var(--trans);
}

.nav-menu li a:hover {
  background: rgba(101,20,255,0.25);
  color: #fff;
}

/* ===========================
   Hero — 首页
   =========================== */
.hero-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  background: var(--c-dark);
  padding: 80px 24px 60px;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 28px,
      rgba(101,20,255,0.07) 28px,
      rgba(101,20,255,0.07) 30px
    );
  animation: patternMove 6s linear infinite;
  pointer-events: none;
}

.hero-slash {
  position: absolute;
  top: -60px;
  left: -5%;
  right: -5%;
  height: 220px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
  transform: skewY(-4deg);
  transform-origin: left;
  z-index: 0;
  opacity: 0.92;
}

.hero-slash-bottom {
  position: absolute;
  bottom: -60px;
  left: -5%;
  right: -5%;
  height: 120px;
  background: linear-gradient(135deg, var(--c-accent) 0%, var(--c-primary) 100%);
  transform: skewY(3deg);
  z-index: 0;
  opacity: 0.55;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 40px;
  max-width: var(--max-w);
  width: 100%;
  text-align: center;
  flex-direction: column;
  animation: fadeUp 380ms ease;
}

.hero-icon-wrap {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-icon {
  border-radius: 50%;
  object-fit: cover;
  width: 80px;
  height: 80px;
}

.hero-text { flex: 1; }

.hero-h1 {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  letter-spacing: 0.04em;
  line-height: 1.05;
  color: #fff;
  text-shadow: 0 2px 24px rgba(101,20,255,0.7);
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 1.1rem;
  color: rgba(240,234,255,0.85);
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  padding: 12px 28px;
  border-radius: var(--radius);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: transform var(--trans), box-shadow var(--trans);
  animation: glowPulse 2.4s ease-in-out infinite;
}

.btn-primary:hover {
  transform: translateY(-2px);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--c-text);
  font-weight: 600;
  font-size: 1rem;
  padding: 12px 28px;
  border-radius: var(--radius);
  border: 2px solid var(--c-primary);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: background var(--trans), color var(--trans);
}

.btn-secondary:hover {
  background: var(--c-primary);
  color: #fff;
}

/* ===========================
   页面 Hero (非首页)
   =========================== */
.page-hero {
  position: relative;
  padding: 72px 24px 48px;
  overflow: hidden;
  background: var(--c-dark2);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 24px,
      rgba(191,0,255,0.05) 24px,
      rgba(191,0,255,0.05) 26px
    );
  pointer-events: none;
}

.page-hero-slash {
  position: absolute;
  top: -40px;
  left: -5%;
  right: -5%;
  height: 160px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
  transform: skewY(-3deg);
  transform-origin: left;
  z-index: 0;
  opacity: 0.8;
}

.compare-hero { background: linear-gradient(180deg, var(--c-dark2) 0%, var(--c-dark) 100%); }
.ranking-hero { background: linear-gradient(180deg, #1a1030 0%, var(--c-dark) 100%); }
.review-hero-section { background: linear-gradient(180deg, #1e1232 0%, var(--c-dark) 100%); }
.about-hero { background: linear-gradient(180deg, var(--c-dark3) 0%, var(--c-dark) 100%); }
.privacy-hero { background: linear-gradient(180deg, var(--c-dark2) 0%, var(--c-dark) 100%); }

.page-hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  animation: fadeUp 300ms ease;
}

.breadcrumb {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  margin-bottom: 14px;
}

.breadcrumb a { color: var(--c-text-muted); }
.breadcrumb a:hover { color: #fff; }
.bc-sep { margin: 0 6px; opacity: 0.5; }

.page-h1 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.8rem);
  letter-spacing: 0.03em;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 12px;
}

.page-sub {
  font-size: 1.05rem;
  color: rgba(240,234,255,0.8);
  max-width: 640px;
  line-height: 1.6;
}

.date-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.article-date {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  background: rgba(101,20,255,0.18);
  padding: 3px 10px;
  border-radius: 2px;
}

/* ===========================
   内容区布局 main > div > article
   =========================== */
main { flex: 1; }

.content-section {
  padding: var(--gap) 24px;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}

.content-with-aside {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--gap);
  align-items: start;
}

.main-content { min-width: 0; }

/* ===========================
   Prose 正文
   =========================== */
.prose {
  color: var(--c-text);
  font-size: 1rem;
  line-height: 1.75;
}

.prose h2 {
  font-family: var(--font-head);
  font-size: 2rem;
  letter-spacing: 0.04em;
  color: #fff;
  margin: 2em 0 0.6em;
  padding-left: 12px;
  border-left: 4px solid var(--c-accent);
}

.prose h3 {
  font-family: var(--font-head);
  font-size: 1.5rem;
  color: var(--c-accent);
  margin: 1.5em 0 0.5em;
}

.prose p { margin-bottom: 1.1em; }

.prose ul, .prose ol {
  padding-left: 1.5em;
  margin-bottom: 1.1em;
}

.prose li { margin-bottom: 0.4em; list-style: disc; }
.prose ol li { list-style: decimal; }

.prose strong { color: #fff; font-weight: 700; }
.prose em { color: var(--c-accent); font-style: normal; }

.prose a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose a:hover { color: #fff; }

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.93rem;
}

.prose th {
  background: var(--c-primary);
  color: #fff;
  padding: 10px 14px;
  text-align: left;
  font-weight: 700;
}

.prose td {
  padding: 9px 14px;
  border-bottom: 1px solid rgba(101,20,255,0.2);
  color: var(--c-text);
}

.prose tr:nth-child(even) td {
  background: rgba(37,29,52,0.5);
}

.prose blockquote {
  border-left: 4px solid var(--c-primary);
  padding: 12px 18px;
  background: rgba(101,20,255,0.1);
  margin: 1.5em 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ===========================
   玻璃拟态卡片
   =========================== */
.glass-card {
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
}

.glass-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(101,20,255,0.35);
  border-color: var(--c-accent);
}

/* ===========================
   Sidebar
   =========================== */
.sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
}

.sidebar h3 {
  font-family: var(--font-head);
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  color: var(--c-accent);
  margin-bottom: 12px;
  margin-top: 24px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--c-border);
}

.sidebar h3:first-child { margin-top: 0; }

.aside-nav,
.aside-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.aside-nav li,
.aside-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--radius);
  transition: background var(--trans);
}

.aside-nav li:hover,
.aside-list li:hover {
  background: rgba(101,20,255,0.18);
}

.aside-nav li a,
.aside-list li a {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  flex: 1;
  line-height: 1.4;
}

.aside-nav li a:hover,
.aside-list li a:hover { color: #fff; }

.aside-nav li small,
.aside-list li small {
  font-size: 0.72rem;
  color: var(--c-primary);
  font-weight: 700;
  flex-shrink: 0;
}

.related-link { display: block; }

.aside-links { margin-top: 16px; }

.aside-link-block {
  display: block;
  background: rgba(101,20,255,0.2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.88rem;
  color: var(--c-text);
  text-align: center;
  transition: background var(--trans), color var(--trans);
}

.aside-link-block:hover {
  background: var(--c-primary);
  color: #fff;
}

/* ===========================
   首页 Nav Grid
   =========================== */
.nav-grid-section {
  padding: 0 24px var(--gap);
  max-width: var(--max-w);
  margin: 0 auto;
}

.nav-grid-section h2,
.children-section h2,
.siblings-section h2,
.ranking-list-wrap h2 {
  font-family: var(--font-head);
  font-size: 2.2rem;
  letter-spacing: 0.04em;
  color: #fff;
  margin-bottom: 24px;
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.nav-card {
  padding: 0;
}

.nav-card a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  color: var(--c-text);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.4;
  min-height: 56px;
}

.nav-card a:hover { color: #fff; }

.nav-card-arrow {
  font-size: 1.1rem;
  color: var(--c-accent);
  flex-shrink: 0;
  margin-left: 12px;
  transition: transform var(--trans);
}

.nav-card:hover .nav-card-arrow { transform: translateX(4px); }

/* ===========================
   首页 Children Cards
   =========================== */
.children-section {
  padding: 0 24px var(--gap);
  max-width: var(--max-w);
  margin: 0 auto;
}

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

.child-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card-thumb { width: 100%; height: 160px; object-fit: cover; }

.card-body {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-body h3 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  letter-spacing: 0.03em;
  color: #fff;
  line-height: 1.2;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.5;
  flex: 1;
}

.card-date {
  font-size: 0.78rem;
  color: var(--c-primary);
}

.card-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--c-accent);
  align-self: flex-start;
  padding: 6px 14px;
  border: 1px solid var(--c-accent);
  border-radius: var(--radius);
  transition: background var(--trans), color var(--trans);
  min-height: 40px;
  display: flex;
  align-items: center;
}

.card-link:hover {
  background: var(--c-accent);
  color: #fff;
}

/* ===========================
   关于本站特殊块
   =========================== */
.about-identity {
  padding: 24px 28px;
  margin-bottom: 32px;
  background: linear-gradient(135deg, rgba(101,20,255,0.25), rgba(191,0,255,0.15));
  border-left: 4px solid var(--c-accent);
}

.about-brand {
  font-family: var(--font-head);
  font-size: 2rem;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: 8px;
}

.about-tagline {
  font-size: 1rem;
  color: var(--c-text-muted);
}

/* ===========================
   Ranking List
   =========================== */
.ranking-list-wrap { margin-top: 40px; }

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rank-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 24px;
  animation: slideInLeft 300ms ease both;
}

.rank-item:nth-child(1) { animation-delay: 0ms; }
.rank-item:nth-child(2) { animation-delay: 60ms; }
.rank-item:nth-child(3) { animation-delay: 120ms; }
.rank-item:nth-child(n+4) { animation-delay: 160ms; }

.rank-num {
  font-family: var(--font-head);
  font-size: 2.2rem;
  color: var(--c-primary);
  line-height: 1;
  min-width: 48px;
  text-align: center;
  flex-shrink: 0;
}

.rank-item:nth-child(1) .rank-num { color: var(--c-accent); font-size: 2.6rem; }
.rank-item:nth-child(2) .rank-num { color: #c8a0ff; }
.rank-item:nth-child(3) .rank-num { color: #a080e0; }

.rank-body { flex: 1; min-width: 0; }

.rank-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-text);
  display: block;
  margin-bottom: 6px;
}

.rank-title:hover { color: var(--c-accent); }

.rank-desc {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.5;
  margin-bottom: 6px;
}

.rank-meta { font-size: 0.78rem; color: var(--c-primary); }

/* ===========================
   Siblings / Compare 列表
   =========================== */
.siblings-section {
  padding: 0 24px var(--gap);
  max-width: var(--max-w);
  margin: 0 auto;
}

.siblings-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.siblings-list li {
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color var(--trans);
}

.siblings-list li:hover { border-color: var(--c-accent); }

.siblings-list li a {
  font-weight: 600;
  color: var(--c-text);
  font-size: 0.95rem;
  line-height: 1.4;
}

.siblings-list li a:hover { color: var(--c-accent); }

.siblings-list li small {
  font-size: 0.78rem;
  color: var(--c-text-muted);
}

/* ===========================
   Review hero img
   =========================== */
.review-hero-img-wrap {
  margin-bottom: 16px;
}

.review-hero-img {
  border-radius: var(--radius);
  max-height: 240px;
  object-fit: cover;
}

/* ===========================
   Footer (footer > p + small 极简)
   =========================== */
footer {
  background: #0e0a18;
  border-top: 1px solid var(--c-border);
  padding: 20px 24px 28px;
  text-align: center;
}

footer p {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  margin-bottom: 6px;
}

footer p a {
  color: var(--c-text-muted);
}

footer p a:hover { color: var(--c-accent); }

footer small {
  font-size: 0.75rem;
  color: rgba(184,168,216,0.5);
  display: block;
}

/* ===========================
   h2 > span 装饰
   =========================== */
h2 > span, h3 > span {
  display: inline;
}

.content-with-aside h2 > span,
.nav-grid-section h2 > span,
.children-section h2 > span,
.siblings-section h2 > span,
.ranking-list-wrap h2 > span {
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar h3 > span {
  color: var(--c-accent);
}

/* ===========================
   Scroll Reveal (JS 驱动，CSS 初始状态)
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 380ms ease, transform 380ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   prefers-reduced-motion
   =========================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ===========================
   响应式
   =========================== */
@media (max-width: 900px) {
  .content-with-aside {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 640px) {
  :root {
    --gap: 32px;
    --gap-sm: 16px;
  }

  .hero-section {
    min-height: 70vh;
    padding: 60px 16px 48px;
  }

  .hero-h1 { font-size: 2.4rem; }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

  .page-hero { padding: 60px 16px 36px; }

  .content-section { padding: var(--gap) 16px; }

  .nav-grid-section,
  .children-section,
  .siblings-section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-grid { grid-template-columns: 1fr; }

  .children-grid { grid-template-columns: 1fr; }

  .siblings-list { grid-template-columns: 1fr; }

  .rank-item { padding: 16px; gap: 14px; }

  .rank-num { font-size: 1.8rem; min-width: 36px; }

  .nav-bar { padding: 0 10px; }

  .nav-link-side { max-width: 80px; font-size: 0.75rem; }

  .nav-brand { font-size: 1rem; }

  footer { padding: 16px 16px 24px; }
}

@media (max-width: 375px) {
  .hero-h1 { font-size: 2rem; }
  .page-h1 { font-size: 1.8rem; }
}