/* =============================================
   结衣波多野导航站 — Y2K霓虹铬光主题
   主色 #69ff69 辅色 #00ffff 墨色 #172617
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600&family=Cormorant+Garamond:ital,wght@0,300;0,500;0,700;1,300;1,500&family=Crimson+Pro:ital,wght@0,300;0,400;0,600;1,300;1,400&display=swap');

/* ---- 变量 ---- */
:root {
  --c-primary: #69ff69;
  --c-secondary: #00ffff;
  --c-dark: #172617;
  --c-dark2: #1e301e;
  --c-dark3: #0d1a0d;
  --c-text: #d4f5d4;
  --c-text-muted: #7db87d;
  --c-border: rgba(105, 255, 105, 0.2);
  --c-border-accent: rgba(0, 255, 255, 0.3);
  --c-glow-green: rgba(105, 255, 105, 0.4);
  --c-glow-cyan: rgba(0, 255, 255, 0.4);
  --font-serif: 'Cormorant Garamond', 'Crimson Pro', Georgia, serif;
  --font-display: 'Cinzel', 'Cormorant Garamond', serif;
  --font-body: 'Crimson Pro', 'Cormorant Garamond', Georgia, serif;
  --bottom-bar-h: 64px;
  --radius: 0;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--c-dark3);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* ---- 页面包裹 ---- */
.page-wrap {
  min-height: 100vh;
  padding-bottom: var(--bottom-bar-h);
}

/* ============================================
   Hero — 首页满屏 + 斜切底边
   ============================================ */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--c-dark3);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__media img.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: brightness(0.35) saturate(1.4);
}

.hero__media--gradient {
  background: linear-gradient(135deg, #0d1a0d 0%, #172617 40%, #001a1a 70%, #0d2020 100%);
}

/* 金属光泽斜切底边 */
.hero__clip {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--c-dark3);
  clip-path: polygon(0 60%, 100% 0%, 100% 100%, 0 100%);
  z-index: 2;
}

.hero__content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 2rem 1.5rem 6rem;
  max-width: 820px;
  width: 100%;
}

.hero__eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--c-secondary);
  margin-bottom: 1.2rem;
  text-shadow: 0 0 12px var(--c-glow-cyan);
}

.hero__h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 4.2rem);
  font-weight: 500;
  line-height: 1.15;
  color: #fff;
  text-shadow: 0 0 30px var(--c-glow-green), 0 2px 40px rgba(0,0,0,0.8);
  margin-bottom: 1.2rem;
  background: linear-gradient(135deg, var(--c-primary) 0%, #ffffff 50%, var(--c-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__lead {
  font-size: 1.1rem;
  color: var(--c-text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  border: 1px solid var(--c-primary);
  color: var(--c-dark3);
  background: linear-gradient(135deg, var(--c-primary) 0%, #a8ffb0 50%, var(--c-secondary) 100%);
  background-size: 200% 200%;
  transition: background-position var(--transition), box-shadow var(--transition);
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.btn:hover {
  background-position: right center;
  box-shadow: 0 0 20px var(--c-glow-green), 0 0 40px var(--c-glow-cyan);
  color: var(--c-dark3);
}

.btn--primary {
  font-weight: 600;
}

/* ============================================
   主内容布局（main>section>article）
   ============================================ */
.main-wrap {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.main-wrap--narrow {
  grid-template-columns: 1fr 260px;
}

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

/* ============================================
   Prose — 正文样式
   ============================================ */
.prose-section {
  margin-bottom: 3rem;
}

.prose {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text);
}

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--c-primary);
  margin: 2rem 0 0.5rem;
  text-shadow: 0 0 12px var(--c-glow-green);
}

.prose h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--c-secondary);
  margin: 1.5rem 0 0.4rem;
}

.prose p { margin-bottom: 1rem; }

.prose a {
  color: var(--c-secondary);
  border-bottom: 1px solid rgba(0, 255, 255, 0.3);
  padding-bottom: 1px;
}

.prose a:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
}

.prose ul, .prose ol {
  margin: 0.8rem 0 1rem 1.5rem;
  list-style: disc;
}

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

.prose strong { color: #fff; font-weight: 600; }
.prose em { color: var(--c-primary); font-style: italic; }

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

.prose th {
  background: var(--c-dark2);
  color: var(--c-primary);
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.1em;
  padding: 0.7rem 1rem;
  border-bottom: 2px solid var(--c-primary);
  text-align: left;
}

.prose td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--c-border);
  vertical-align: top;
}

.prose tr:hover td {
  background: rgba(105, 255, 105, 0.04);
}

.prose--legal { font-size: 0.95rem; }
.prose--legal h2 { font-size: 1.25rem; }

/* ============================================
   节标题
   ============================================ */
.section-head {
  margin-bottom: 2rem;
}

.section-head h2,
.content-article > article > h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 500;
  color: var(--c-primary);
  text-shadow: 0 0 16px var(--c-glow-green);
  margin-bottom: 0.4rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--c-border);
}

.subtitle,
p.subtitle {
  color: var(--c-text-muted);
  font-size: 0.95rem;
  font-style: italic;
  margin-bottom: 0;
}

/* ============================================
   卡片 — 零圆角 + 底部强调线
   ============================================ */
.card {
  position: relative;
  background: var(--c-dark2);
  border: 1px solid var(--c-border);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(105, 255, 105, 0.15);
}

.card__inner {
  padding: 1.5rem;
}

.card__accent {
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
}

.card__num {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--c-secondary);
  display: block;
  margin-bottom: 0.6rem;
  text-shadow: 0 0 8px var(--c-glow-cyan);
}

.card__title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.card__title a {
  color: #fff;
}

.card__title a:hover {
  color: var(--c-primary);
}

.card__desc {
  font-size: 0.9rem;
  color: var(--c-text-muted);
  margin-bottom: 1rem;
  font-style: normal;
}

.card__date {
  font-size: 0.8rem;
  color: var(--c-secondary);
  display: block;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.card__cta {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-primary);
  padding-bottom: 1px;
  transition: color var(--transition);
}

.card__cta:hover {
  color: var(--c-secondary);
  border-color: var(--c-secondary);
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.cards-section { margin-bottom: 3rem; }

/* 列表卡片 */
.cards-list {
  display: grid;
  gap: 1rem;
}

.card--list .card__inner {
  padding: 1.2rem 1.5rem;
}

.recent-section { margin-bottom: 2rem; }

/* ============================================
   Stagger 动效
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
  .stagger-item {
    opacity: 0;
    transform: translateY(20px);
    animation: staggerIn 0.5s ease forwards;
    animation-delay: calc(var(--i, 0) * 0.08s + 0.1s);
  }

  @keyframes staggerIn {
    to { opacity: 1; transform: translateY(0); }
  }

  /* 视差 */
  .parallax-hero .hero__media img,
  .parallax-hero .article-hero__media img {
    will-change: transform;
  }
}

@media (prefers-reduced-motion: reduce) {
  .stagger-item { opacity: 1; transform: none; animation: none; }
}

/* ============================================
   侧边栏（aside 右侧）
   ============================================ */
.sidebar {
  position: sticky;
  top: 1.5rem;
  align-self: start;
}

.sidebar__title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-secondary);
  text-shadow: 0 0 8px var(--c-glow-cyan);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--c-border-accent);
}

.sidebar__nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar__nav ul li a {
  display: block;
  padding: 0.45rem 0.75rem;
  font-size: 0.9rem;
  color: var(--c-text-muted);
  border-left: 2px solid transparent;
  transition: all var(--transition);
  line-height: 1.4;
}

.sidebar__nav ul li a:hover,
.sidebar__nav ul li a.is-current {
  color: var(--c-primary);
  border-left-color: var(--c-primary);
  background: rgba(105, 255, 105, 0.05);
  padding-left: 1rem;
}

.sidebar__block {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--c-dark2);
  border: 1px solid var(--c-border);
  border-bottom: 2px solid var(--c-primary);
}

.sidebar__block h3 {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--c-primary);
  margin-bottom: 0.75rem;
}

.sidebar__block p {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

.sidebar__block a {
  color: var(--c-secondary);
  font-size: 0.88rem;
}

.sidebar__card {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--c-border);
}

.sidebar__card:last-child { border-bottom: none; }

.sidebar__card a {
  font-size: 0.9rem;
  color: var(--c-text);
  display: block;
  margin-bottom: 0.2rem;
  line-height: 1.4;
}

.sidebar__card a:hover { color: var(--c-primary); }

.sidebar__card .subtitle {
  font-size: 0.8rem;
  font-style: normal;
  color: var(--c-text-muted);
}

/* ============================================
   文章页 Hero（较矮）
   ============================================ */
.article-hero {
  position: relative;
  width: 100%;
  min-height: 55vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--c-dark3);
}

.article-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.article-hero__media img.article-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: brightness(0.25) saturate(1.2);
}

.article-hero__media--gradient {
  background: linear-gradient(160deg, #0d2020 0%, var(--c-dark3) 60%, #1a0d1a 100%);
}

.article-hero__content {
  position: relative;
  z-index: 3;
  padding: 3rem 1.5rem 5rem;
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
}

.article-hero__content h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.5vw, 3rem);
  font-weight: 500;
  line-height: 1.2;
  color: #fff;
  text-shadow: 0 0 24px var(--c-glow-green);
  margin: 0.5rem 0 0.75rem;
}

.article-hero__desc {
  font-size: 1rem;
  color: var(--c-text-muted);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.article-hero__date {
  font-size: 0.82rem;
  color: var(--c-secondary);
  letter-spacing: 0.05em;
  display: inline-block;
  margin-right: 1rem;
}

.breadcrumb {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--c-text-muted);
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--c-border);
  padding-bottom: 2px;
}

.breadcrumb:hover { color: var(--c-secondary); }

/* ============================================
   关于页 Hero
   ============================================ */
.about-hero {
  position: relative;
  background: linear-gradient(135deg, var(--c-dark2) 0%, var(--c-dark3) 60%);
  border-bottom: 2px solid var(--c-border);
  overflow: hidden;
  padding-bottom: 2px;
}

.about-hero__inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
}

.about-hero__tag {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--c-secondary);
  text-transform: uppercase;
  text-shadow: 0 0 8px var(--c-glow-cyan);
  display: block;
  margin-bottom: 1rem;
}

.about-hero__inner h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 500;
  color: #fff;
  text-shadow: 0 0 20px var(--c-glow-green);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

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

/* 关于页功能区 */
.about-features {
  margin-top: 2.5rem;
  margin-bottom: 2rem;
}

.about-features h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--c-primary);
  text-shadow: 0 0 12px var(--c-glow-green);
  margin-bottom: 0.4rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--c-border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.feature-item {
  background: var(--c-dark2);
  border: 1px solid var(--c-border);
  border-bottom: 3px solid var(--c-secondary);
  padding: 1.25rem;
}

.feature-num {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--c-secondary);
  text-shadow: 0 0 8px var(--c-glow-cyan);
  display: block;
  margin-bottom: 0.5rem;
}

.feature-item h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.4rem;
}

.feature-item p {
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.55;
}

/* ============================================
   隐私页 Hero
   ============================================ */
.privacy-hero {
  background: var(--c-dark2);
  border-bottom: 1px solid var(--c-border);
}

.privacy-hero__inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
}

.privacy-hero__tag {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--c-text-muted);
  text-transform: uppercase;
  display: block;
  margin-bottom: 1rem;
}

.privacy-hero__inner h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 500;
  color: var(--c-primary);
  text-shadow: 0 0 16px var(--c-glow-green);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.privacy-hero__date {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  letter-spacing: 0.05em;
}

/* ============================================
   全屏遮罩菜单
   ============================================ */
.overlay-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(13, 26, 13, 0.97);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.overlay-menu.is-open {
  opacity: 1;
  pointer-events: all;
}

.overlay-menu__inner {
  position: relative;
  width: 100%;
  max-width: 600px;
  padding: 3rem 2rem;
}

.overlay-menu__nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.overlay-menu__nav ul li a {
  display: block;
  padding: 0.85rem 1rem;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--c-text-muted);
  border-left: 2px solid transparent;
  transition: all var(--transition);
  line-height: 1.3;
}

.overlay-menu__nav ul li a:hover,
.overlay-menu__nav ul li a[aria-current="page"] {
  color: var(--c-primary);
  border-left-color: var(--c-primary);
  text-shadow: 0 0 12px var(--c-glow-green);
  padding-left: 1.5rem;
}

.overlay-brand {
  font-family: var(--font-display) !important;
  font-size: clamp(1.1rem, 3vw, 1.5rem) !important;
  color: #fff !important;
  letter-spacing: 0.1em;
  padding-bottom: 1rem !important;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--c-border) !important;
}

.overlay-menu__close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 1.5rem;
  color: var(--c-text-muted);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border);
  transition: color var(--transition), border-color var(--transition);
}

.overlay-menu__close:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
}

/* ============================================
   底部固定导航条
   ============================================ */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bottom-bar-h);
  background: rgba(13, 26, 13, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--c-border);
  z-index: 100;
}

.bottom-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-primary), var(--c-secondary), transparent);
}

.bottom-bar__nav ul {
  display: flex;
  align-items: stretch;
  height: var(--bottom-bar-h);
}

.bottom-bar__nav ul li {
  flex: 1;
  display: flex;
}

.bottom-bar__nav ul li a,
.bottom-bar__menu {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0.5rem 0.25rem;
  min-height: 44px;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  transition: color var(--transition);
}

.bottom-bar__nav ul li a:hover,
.bottom-bar__menu:hover,
.bottom-bar__nav ul li a[aria-current="page"] {
  color: var(--c-primary);
}

.bottom-bar__nav ul li a svg,
.bottom-bar__menu svg {
  transition: filter var(--transition);
}

.bottom-bar__nav ul li a:hover svg,
.bottom-bar__menu:hover svg {
  filter: drop-shadow(0 0 4px var(--c-primary));
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
  background: var(--c-dark2);
  border-top: 1px solid var(--c-border);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-right: auto;
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  color: var(--c-text-muted);
}

.brand-icon img { width: 32px; height: 32px; object-fit: contain; }

.brand-icon-text {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color: var(--c-dark3);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.footer__nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer__nav a {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  min-height: 40px;
  display: flex;
  align-items: center;
  padding: 0 0.25rem;
}

.footer__nav a:hover { color: var(--c-primary); }

.footer__copy {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  opacity: 0.6;
  width: 100%;
  padding-top: 0.75rem;
  border-top: 1px solid var(--c-border);
  margin-top: 0.25rem;
}

/* ============================================
   响应式 — 平板
   ============================================ */
@media (max-width: 900px) {
  .main-wrap {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    align-items: start;
  }

  .sidebar__nav,
  .sidebar__block,
  .sidebar__related {
    margin-top: 0;
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}

/* ============================================
   响应式 — 手机
   ============================================ */
@media (max-width: 600px) {
  html { font-size: 16px; }

  .hero__content { padding-bottom: 5rem; }
  .hero__h1 { font-size: 2rem; }

  .main-wrap {
    padding: 2rem 1rem 3rem;
    gap: 1.5rem;
  }

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

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

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

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .footer__brand { margin-right: 0; }

  .footer__nav {
    gap: 0.75rem;
  }

  .article-hero__content { padding-bottom: 4rem; }

  .overlay-menu__inner { padding: 2rem 1.25rem; }

  .about-hero__inner,
  .privacy-hero__inner {
    padding-top: 3.5rem;
  }
}

/* ============================================
   霓虹发光脉冲动效
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
  @keyframes glowPulse {
    0%, 100% { text-shadow: 0 0 8px var(--c-glow-green); }
    50% { text-shadow: 0 0 20px var(--c-glow-green), 0 0 40px var(--c-glow-cyan); }
  }

  .sidebar__title {
    animation: glowPulse 3s ease-in-out infinite;
  }

  .bottom-bar::before {
    animation: borderSlide 4s linear infinite;
  }

  @keyframes borderSlide {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
  }
}

/* ============================================
   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;
}