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

/* ============================================================
   CSS 变量 & 基础重置
   ============================================================ */
:root {
  --clr-bg: #0d0d0d;
  --clr-purple: #8000ff;
  --clr-magenta: #ff00ff;
  --clr-purple-dim: rgba(128, 0, 255, 0.15);
  --clr-magenta-dim: rgba(255, 0, 255, 0.12);
  --clr-text: #e0e0e0;
  --clr-text-muted: #888;
  --clr-border: rgba(128, 0, 255, 0.35);
  --clr-border-mag: rgba(255, 0, 255, 0.3);
  --clr-surface: #111118;
  --clr-surface2: #16161f;
  --glow-purple: 0 0 8px #8000ff, 0 0 20px rgba(128,0,255,0.5);
  --glow-magenta: 0 0 8px #ff00ff, 0 0 20px rgba(255,0,255,0.5);
  --font-main: 'Noto Sans KR', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
  --radius: 0;
  --container: 1200px;
  --header-height: 110px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body.cyberpunk-body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ============================================================
   扫描线叠加层
   ============================================================ */
.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
}

/* ============================================================
   容器
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================================================
   故障动画
   ============================================================ */
@keyframes glitch-skew {
  0%   { transform: skewX(0deg); }
  10%  { transform: skewX(-2deg); }
  20%  { transform: skewX(1.5deg); }
  30%  { transform: skewX(0deg); }
  70%  { transform: skewX(0deg); }
  80%  { transform: skewX(1deg); }
  90%  { transform: skewX(-1deg); }
  100% { transform: skewX(0deg); }
}

@keyframes glitch-clip1 {
  0%   { clip-path: inset(0 0 95% 0); transform: translate(-3px, 0); }
  20%  { clip-path: inset(30% 0 50% 0); transform: translate(3px, 0); }
  40%  { clip-path: inset(60% 0 20% 0); transform: translate(-2px, 0); }
  60%  { clip-path: inset(80% 0 5% 0); transform: translate(2px, 0); }
  80%  { clip-path: inset(10% 0 80% 0); transform: translate(-1px, 0); }
  100% { clip-path: inset(0 0 95% 0); transform: translate(0, 0); }
}

@keyframes glitch-clip2 {
  0%   { clip-path: inset(50% 0 30% 0); transform: translate(3px, 0); }
  25%  { clip-path: inset(10% 0 70% 0); transform: translate(-3px, 0); }
  50%  { clip-path: inset(70% 0 10% 0); transform: translate(2px, 0); }
  75%  { clip-path: inset(40% 0 45% 0); transform: translate(-2px, 0); }
  100% { clip-path: inset(50% 0 30% 0); transform: translate(0, 0); }
}

@keyframes neon-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}

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

.glitch {
  position: relative;
  animation: glitch-skew 6s infinite linear;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.glitch::before {
  color: var(--clr-magenta);
  animation: glitch-clip1 4s infinite steps(1);
  opacity: 0.7;
}

.glitch::after {
  color: var(--clr-purple);
  animation: glitch-clip2 3.5s infinite steps(1);
  opacity: 0.6;
}

@media (prefers-reduced-motion: reduce) {
  .glitch, .glitch::before, .glitch::after {
    animation: none;
  }
  .glitch::before, .glitch::after {
    display: none;
  }
  .reveal { opacity: 1 !important; transform: none !important; animation: none !important; }
}

/* ============================================================
   页头
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.97);
  border-bottom: 1px solid var(--clr-border);
}

.header-brand-row {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(128,0,255,0.2);
}

.header-brand-row .container {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.brand-logo {
  height: 36px;
  width: auto;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-purple);
  text-shadow: var(--glow-purple);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.brand-tagline {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.header-nav-row {
  padding: 0;
}

.nav-inner {
  display: flex;
  align-items: stretch;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-inner::-webkit-scrollbar { display: none; }

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  text-decoration: none;
  white-space: nowrap;
  border-right: 1px solid rgba(128,0,255,0.15);
  transition: color 0.2s, background 0.2s;
  min-height: 44px;
  letter-spacing: 0.02em;
}

.nav-link:first-child {
  border-left: 1px solid rgba(128,0,255,0.15);
}

.nav-link:hover,
.nav-link.active {
  color: var(--clr-magenta);
  background: var(--clr-magenta-dim);
  text-shadow: 0 0 6px var(--clr-magenta);
}

.header-ticker {
  background: rgba(128,0,255,0.08);
  border-top: 1px solid rgba(128,0,255,0.2);
  padding: 0.3rem 0;
}

.header-ticker .container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.ticker-label {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--clr-purple);
  text-shadow: var(--glow-purple);
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--clr-purple);
  white-space: nowrap;
  animation: neon-pulse 2s infinite;
}

.ticker-text {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

/* ============================================================
   Hero（首页专用）
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--clr-bg);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(128,0,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(128,0,255,0.08) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero-grid::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(128,0,255,0.18) 0%, transparent 65%),
              radial-gradient(ellipse at 70% 80%, rgba(255,0,255,0.12) 0%, transparent 55%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 6rem 1.5rem 4rem;
  max-width: var(--container);
  width: 100%;
}

.hero-badges {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.hero-h1 {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  text-shadow: var(--glow-purple);
  max-width: 800px;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 560px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.75rem;
  background: var(--clr-purple);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--clr-purple);
  box-shadow: var(--glow-purple);
  transition: background 0.2s, box-shadow 0.2s;
  min-height: 48px;
  letter-spacing: 0.03em;
}

.btn-primary:hover {
  background: var(--clr-magenta);
  border-color: var(--clr-magenta);
  box-shadow: var(--glow-magenta);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.75rem;
  background: transparent;
  color: var(--clr-magenta);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--clr-magenta);
  box-shadow: inset 0 0 0 0 var(--clr-magenta);
  transition: background 0.2s, color 0.2s;
  min-height: 48px;
  letter-spacing: 0.03em;
}

.btn-outline:hover {
  background: var(--clr-magenta-dim);
  color: #fff;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.stat-num {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--clr-purple);
  text-shadow: var(--glow-purple);
  font-family: var(--font-mono);
  line-height: 1;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}

/* ============================================================
   徽章
   ============================================================ */
.badge-neon {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--clr-magenta);
  border: 1px solid var(--clr-magenta);
  text-shadow: 0 0 6px var(--clr-magenta);
  box-shadow: 0 0 8px rgba(255,0,255,0.25);
  text-decoration: none;
  letter-spacing: 0.05em;
  animation: neon-pulse 3s infinite;
}

.badge-outline {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--clr-purple);
  border: 1px solid var(--clr-purple);
  letter-spacing: 0.05em;
}

/* ============================================================
   正文区块布局
   ============================================================ */
.page-main {
  min-height: 50vh;
}

.content-section {
  padding: 3rem 0;
}

.content-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2.5rem;
  align-items: start;
}

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

.page-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 1rem;
}

.page-date,
.page-date-mod {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--clr-text-muted);
  letter-spacing: 0.04em;
}

.page-h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  color: #fff;
  text-shadow: var(--glow-purple);
  margin-bottom: 1.75rem;
  letter-spacing: -0.01em;
}

/* ============================================================
   content-figure（正文容器，满足 article > figure 约束）
   ============================================================ */
.content-figure {
  border-left: 2px solid var(--clr-border);
  padding-left: 1.25rem;
  margin-bottom: 2rem;
}

.content-body {
  color: var(--clr-text);
  font-size: 1rem;
  line-height: 1.8;
}

.content-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--clr-magenta);
  text-shadow: 0 0 6px rgba(255,0,255,0.4);
  margin: 2rem 0 0.75rem;
  letter-spacing: 0.02em;
}

.content-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-purple);
  text-shadow: 0 0 4px rgba(128,0,255,0.4);
  margin: 1.5rem 0 0.5rem;
}

.content-body p {
  margin-bottom: 1rem;
}

.content-body ul,
.content-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.content-body li {
  margin-bottom: 0.4rem;
}

.content-body a {
  color: var(--clr-magenta);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,0,255,0.35);
  transition: color 0.2s, border-color 0.2s;
}

.content-body a:hover {
  color: #fff;
  border-color: #fff;
}

.content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.content-body th,
.content-body td {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--clr-border);
  text-align: left;
}

.content-body th {
  background: var(--clr-purple-dim);
  color: var(--clr-purple);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.content-body blockquote {
  border-left: 3px solid var(--clr-magenta);
  padding: 0.75rem 1rem;
  background: var(--clr-magenta-dim);
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--clr-text);
}

/* ============================================================
   小眉题（h2/h3 前的 small 同级）
   ============================================================ */
small {
  display: block;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--clr-purple);
  text-shadow: 0 0 4px rgba(128,0,255,0.5);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

/* ============================================================
   侧边栏
   ============================================================ */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1rem);
}

.sidebar-inner {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  padding: 1.25rem;
}

.sidebar-inner h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-magenta);
  margin-bottom: 0.75rem;
  letter-spacing: 0.03em;
}

.sidebar-links {
  list-style: none;
  padding: 0;
}

.sidebar-links li {
  border-bottom: 1px solid rgba(128,0,255,0.12);
}

.sidebar-links li:last-child {
  border-bottom: none;
}

.sidebar-links a {
  display: block;
  padding: 0.5rem 0;
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  text-decoration: none;
  transition: color 0.2s, padding-left 0.2s;
  min-height: 40px;
  display: flex;
  align-items: center;
  line-height: 1.4;
}

.sidebar-links a:hover {
  color: var(--clr-magenta);
  padding-left: 0.4rem;
}

.sidebar-badge {
  margin-top: 1rem;
}

/* ============================================================
   Inline aside（评测/about 内的内联相关块）
   ============================================================ */
.inline-related {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-mag);
  padding: 1.25rem;
  margin-top: 2rem;
}

.inline-related h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-magenta);
  margin-bottom: 0.75rem;
}

.inline-related ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.inline-related a {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  text-decoration: none;
  transition: color 0.2s;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.inline-related a:hover {
  color: var(--clr-magenta);
}

/* ============================================================
   首页 ─ 卡片区
   ============================================================ */
.cards-section {
  padding: 3rem 0;
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.cards-section .container > small {
  margin-bottom: 0.25rem;
}

.section-h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-shadow: var(--glow-purple);
  margin-bottom: 1.75rem;
  letter-spacing: 0.01em;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-purple), var(--clr-magenta));
}

.card:hover {
  border-color: var(--clr-magenta);
  box-shadow: 0 4px 24px rgba(255,0,255,0.15);
}

.card.reveal {
  opacity: 0;
  transform: translateY(20px);
  animation: reveal-up 0.5s ease forwards;
  animation-delay: var(--delay, 0ms);
}

.card-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--clr-purple);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  opacity: 0.7;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
}

.card-title a {
  color: #fff;
  text-decoration: none;
  transition: color 0.2s;
}

.card-title a:hover {
  color: var(--clr-magenta);
  text-shadow: 0 0 4px var(--clr-magenta);
}

.card-desc {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  flex: 1;
}

.card-date {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--clr-text-muted);
  opacity: 0.7;
}

.card-cta {
  display: inline-block;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--clr-purple);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  padding: 0.35rem 0;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.card-cta:hover {
  color: var(--clr-magenta);
}

/* ============================================================
   首页 ─ 双栏列表区
   ============================================================ */
.list-section {
  padding: 3rem 0;
}

.two-col-lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.list-block small {
  margin-bottom: 0.25rem;
}

.page-dl dt {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--clr-border);
}

.page-dl dt a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-text);
  text-decoration: none;
  transition: color 0.2s;
  min-height: 40px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-dl dt a:hover {
  color: var(--clr-magenta);
}

.page-dl dd {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  padding: 0.4rem 0 0.75rem;
  line-height: 1.6;
}

/* ============================================================
   评测页 ─ 眉条
   ============================================================ */
.review-eyebrow {
  padding: 0.6rem 0;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
}

.review-eyebrow .container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  font-family: var(--font-mono);
}

.review-eyebrow a {
  color: var(--clr-text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.review-eyebrow a:hover {
  color: var(--clr-magenta);
}

.eyebrow-sep {
  opacity: 0.4;
}

.eyebrow-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--clr-purple);
  border: 1px solid var(--clr-purple);
  letter-spacing: 0.06em;
}

/* ============================================================
   对比页 ─ 顶部横条
   ============================================================ */
.compare-header-band {
  padding: 0.75rem 0;
  background: linear-gradient(90deg, rgba(128,0,255,0.12), rgba(255,0,255,0.08));
  border-bottom: 1px solid var(--clr-border);
}

.compare-header-band .container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.compare-vs-badge {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-magenta);
  text-shadow: var(--glow-magenta);
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--clr-magenta);
  animation: neon-pulse 2s infinite;
}

/* ============================================================
   排行页 ─ 排行列表
   ============================================================ */
.ranking-list-aside {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  padding: 1.25rem;
  margin-top: 2rem;
}

.ranking-list-aside h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-magenta);
  margin-bottom: 0.75rem;
}

.ranking-dl dt {
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(128,0,255,0.12);
}

.ranking-dl dt a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--clr-text);
  text-decoration: none;
  transition: color 0.2s;
  min-height: 40px;
}

.ranking-dl dt a:hover {
  color: var(--clr-magenta);
}

.rank-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--clr-purple);
  opacity: 0.8;
  min-width: 1.6rem;
}

.ranking-dl dd {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  padding: 0.3rem 0 0.6rem 2.2rem;
  line-height: 1.5;
}

/* ============================================================
   FAQ 页
   ============================================================ */
.faq-caption {
  margin-bottom: 0.5rem;
}

.faq-body h2,
.faq-body h3 {
  margin-top: 1.75rem;
}

/* ============================================================
   About / About-links
   ============================================================ */
.about-links-aside {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  padding: 1.25rem;
  margin-top: 2rem;
}

.about-links-aside h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-magenta);
  margin-bottom: 0.75rem;
}

.about-links {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.5rem;
}

.about-links a {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  text-decoration: none;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 0.3rem 0;
}

.about-links a:hover {
  color: var(--clr-magenta);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  margin-top: 3rem;
}

.footer-brand-block {
  padding: 2rem 0 1rem;
  border-bottom: 1px solid rgba(128,0,255,0.2);
}

.footer-brand-big {
  font-size: clamp(1.5rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--clr-purple);
  text-shadow: var(--glow-purple);
  letter-spacing: -0.01em;
  line-height: 1;
  font-family: var(--font-mono);
  opacity: 0.5;
}

.footer-cols-block {
  padding: 2rem 0;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.footer-col-title {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--clr-magenta);
  letter-spacing: 0.08em;
  padding: 0 0 0.5rem;
  border-bottom: 1px solid var(--clr-border-mag);
  margin-bottom: 0.5rem;
  font-weight: 600;
  display: block;
}

.footer-col dl {
  margin: 0;
}

.footer-col dd {
  margin: 0;
  padding: 0;
}

.footer-col dd a {
  display: block;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  text-decoration: none;
  padding: 0.3rem 0;
  transition: color 0.2s, padding-left 0.2s;
  min-height: 40px;
  display: flex;
  align-items: center;
  line-height: 1.4;
}

.footer-col dd a:hover {
  color: var(--clr-magenta);
  padding-left: 0.35rem;
}

.footer-bottom {
  padding: 1rem 0;
  border-top: 1px solid rgba(128,0,255,0.15);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  font-family: var(--font-mono);
  text-align: center;
  line-height: 1.6;
}

.footer-copy a {
  color: var(--clr-purple);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-copy a:hover {
  color: var(--clr-magenta);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 960px) {
  .content-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .footer-cols {
    grid-template-columns: repeat(2, 1fr);
  }

  .two-col-lists {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .hero-h1 {
    font-size: 1.8rem;
  }

  .hero-inner {
    padding: 4rem 1.25rem 3rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-outline {
    width: 100%;
    justify-content: center;
  }

  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .nav-link {
    font-size: 0.75rem;
    padding: 0.6rem 0.65rem;
  }

  .brand-tagline {
    display: none;
  }

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

  .about-links {
    grid-template-columns: 1fr;
  }

  .content-section {
    padding: 2rem 0;
  }

  .cards-section,
  .list-section {
    padding: 2rem 0;
  }
}

@media (max-width: 420px) {
  .footer-cols {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 1.25rem;
  }
}

/* ============================================================
   辅助工具
   ============================================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a:focus-visible {
  outline: 2px solid var(--clr-magenta);
  outline-offset: 2px;
}

::selection {
  background: rgba(128,0,255,0.4);
  color: #fff;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--clr-purple);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-magenta);
}