@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 & 基础重置
   ============================================= */
:root {
  --c-lime: #80ff00;
  --c-green: #00ff00;
  --c-dark: #1f2617;
  --c-dark2: #161c0f;
  --c-dark3: #2a3420;
  --c-lime-dim: rgba(128,255,0,.15);
  --c-lime-glow: rgba(128,255,0,.4);
  --c-text: #e8f5d0;
  --c-muted: #8aab60;
  --c-border: rgba(128,255,0,.25);
  --nav-w: 220px;
  --nav-w-collapsed: 60px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --font-head: 'Bebas Neue', 'Arial Black', sans-serif;
  --font-body: 'Source Sans 3', system-ui, -apple-system, sans-serif;
  --transition: 0.2s ease;
}

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

html { font-size: 17px; scroll-behavior: smooth; }

body {
  background: var(--c-dark);
  color: var(--c-text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-lime); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, menu { list-style: none; }
button { cursor: pointer; }

/* =============================================
   噪点纹理（伪元素叠层）
   ============================================= */
.noise-layer {
  position: relative;
}
.noise-layer::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  border-radius: inherit;
  z-index: 2;
  mix-blend-mode: overlay;
}

/* =============================================
   全局布局：侧边导航 + 主体
   ============================================= */
.site-wrap {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* =============================================
   侧边导航 (details > summary + menu > li > a)
   ============================================= */
.sidenav {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: var(--nav-w);
  background: var(--c-dark2);
  border-right: 2px solid var(--c-border);
  z-index: 900;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  transition: width var(--transition);
}

.sidenav:not([open]) {
  width: var(--nav-w-collapsed);
}

.sidenav summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 14px;
  cursor: pointer;
  border-bottom: 1px solid var(--c-border);
  background: var(--c-dark2);
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 64px;
  user-select: none;
}
.sidenav summary::-webkit-details-marker { display: none; }
.sidenav summary::marker { display: none; }

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  object-fit: contain;
}
.brand-icon-txt {
  font-family: var(--font-head);
  font-size: 1.4rem;
  color: var(--c-lime);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  width: 36px;
  text-align: center;
}
.nav-toggle-hint {
  font-size: 0.75rem;
  color: var(--c-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
}
.sidenav:not([open]) .nav-toggle-hint { opacity: 0; width: 0; }

.nav-menu {
  padding: 12px 0 80px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-menu li { width: 100%; }

.nav-link {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-text);
  border-left: 3px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  min-height: 44px;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-link:hover,
.nav-link.active {
  background: var(--c-lime-dim);
  border-left-color: var(--c-lime);
  color: var(--c-lime);
  text-decoration: none;
}
.sidenav:not([open]) .nav-link {
  font-size: 0;
  padding: 10px 0;
  justify-content: center;
}
.sidenav:not([open]) .nav-link::before {
  content: '›';
  font-size: 1.1rem;
  color: var(--c-muted);
}

.nav-cta-wrap {
  margin-top: 12px;
  padding: 0 12px;
}
.nav-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  background: var(--c-lime);
  color: var(--c-dark);
  font-family: var(--font-head);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  border-radius: var(--radius-sm);
  min-height: 48px;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
  overflow: hidden;
}
.nav-cta:hover {
  background: var(--c-green);
  text-decoration: none;
  transform: translateY(-1px);
}
.sidenav:not([open]) .nav-cta {
  font-size: 0;
  padding: 12px 0;
}
.sidenav:not([open]) .nav-cta::before {
  content: '→';
  font-size: 1.2rem;
}

/* =============================================
   主体区域
   ============================================= */
.page-body {
  margin-left: var(--nav-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* =============================================
   Hero — 首页全宽
   ============================================= */
.hero-section {
  position: relative;
  height: 45vh;
  min-height: 300px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}

.hero-media {
  position: absolute;
  inset: 0;
}
.hero-media.compact {
  height: 100%;
}
.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(130%) brightness(0.6);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(31,38,23,.85) 0%, rgba(31,38,23,.3) 100%);
  mix-blend-mode: multiply;
}

.hero-content {
  position: relative;
  z-index: 5;
  text-align: right;
  padding: 32px 40px;
  max-width: 680px;
}
.hero-content.right-align { text-align: right; }

.hero-eyebrow,
.badge-float {
  display: inline-block;
  background: var(--c-lime);
  color: var(--c-dark);
  font-family: var(--font-head);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.hero-h1 {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 5vw, 4rem);
  color: #fff;
  line-height: 1.05;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
  text-shadow: 0 2px 20px rgba(0,0,0,.6);
}
.guide-h1 { font-size: clamp(1.8rem, 4vw, 3rem); }

.hero-sub {
  font-size: 1rem;
  color: var(--c-text);
  margin-bottom: 20px;
  opacity: 0.9;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background: var(--c-lime);
  color: var(--c-dark);
  font-family: var(--font-head);
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  border-radius: var(--radius-sm);
  min-height: 48px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.hero-cta:hover {
  background: var(--c-green);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--c-lime-glow);
  text-decoration: none;
}

.hero-badge,
.badge-spin {
  position: absolute;
  bottom: 24px;
  left: 40px;
  z-index: 6;
  background: var(--c-dark3);
  border: 2px solid var(--c-lime);
  color: var(--c-lime);
  font-family: var(--font-head);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transform: rotate(-4deg);
  animation: jitter 3s infinite;
}

.hero-date {
  display: block;
  font-size: 0.85rem;
  color: var(--c-muted);
  margin-top: 6px;
}

/* =============================================
   Hero — 内页紧凑版
   ============================================= */
.inner-hero {
  position: relative;
  background: var(--c-dark3);
  border-bottom: 2px solid var(--c-border);
  padding: 48px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  overflow: hidden;
}
.inner-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 18px,
    rgba(128,255,0,.04) 18px,
    rgba(128,255,0,.04) 19px
  );
  pointer-events: none;
}

.inner-hero-content { position: relative; z-index: 2; }

.inner-h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  color: var(--c-lime);
  line-height: 1.1;
  letter-spacing: 0.02em;
  margin: 8px 0;
}
.inner-sub {
  color: var(--c-text);
  opacity: 0.85;
  font-size: 1rem;
  max-width: 560px;
}

.guide-hero {
  position: relative;
  height: 40vh;
  min-height: 260px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}

/* =============================================
   主内容容器
   ============================================= */
.main-content {
  flex: 1;
  padding: 40px 36px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

/* content-section with aside */
.content-section {
  display: flex;
  gap: 36px;
  align-items: flex-start;
  margin-bottom: 56px;
}
.content-section.with-aside {
  flex-direction: row;
}

.prose-wrap {
  flex: 1;
  min-width: 0;
}

/* article heading */
.section-heading {
  font-family: var(--font-head);
  font-size: 2rem;
  color: var(--c-lime);
  letter-spacing: 0.04em;
  line-height: 1.1;
  margin-bottom: 4px;
}

/* 标题装饰：h2 + p.subtitle */
.subtitle {
  font-size: 0.92rem;
  color: var(--c-muted);
  margin-bottom: 20px;
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* content-figure 正文主容器 */
.content-figure {
  background: var(--c-dark3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  margin: 0;
}

/* prose 正文样式 */
.prose {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
}
.prose h2,
.prose h3,
.prose h4 {
  font-family: var(--font-head);
  color: var(--c-lime);
  letter-spacing: 0.04em;
  margin: 1.5em 0 0.5em;
}
.prose h2 { font-size: 1.6rem; }
.prose h3 { font-size: 1.3rem; }
.prose p { margin-bottom: 1em; }
.prose ul,
.prose ol {
  padding-left: 1.5em;
  margin-bottom: 1em;
}
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.4em; }
.prose a { color: var(--c-lime); text-decoration: underline; }
.prose a:hover { color: var(--c-green); }
.prose strong { color: #fff; font-weight: 700; }
.prose blockquote {
  border-left: 3px solid var(--c-lime);
  padding-left: 16px;
  color: var(--c-muted);
  margin: 1em 0;
  font-style: italic;
}
.prose code {
  background: rgba(128,255,0,.12);
  color: var(--c-lime);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9em;
}
.prose pre {
  background: var(--c-dark2);
  padding: 16px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 1em;
}
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1em;
  font-size: 0.92rem;
}
.prose th {
  background: var(--c-dark2);
  color: var(--c-lime);
  padding: 8px 12px;
  text-align: left;
  font-family: var(--font-head);
  letter-spacing: 0.05em;
}
.prose td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--c-border);
}

.changelog-prose h2,
.changelog-prose h3 {
  border-left: 4px solid var(--c-lime);
  padding-left: 12px;
}

.update-tip {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--c-muted);
}

/* =============================================
   侧边栏 aside
   ============================================= */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: 80px;
}

.aside-block {
  background: var(--c-dark3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.aside-title {
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--c-lime);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.aside-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.aside-link {
  display: block;
  padding: 7px 10px;
  font-size: 0.88rem;
  color: var(--c-text);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.aside-link:hover,
.aside-link-active {
  background: var(--c-lime-dim);
  border-left-color: var(--c-lime);
  color: var(--c-lime);
  text-decoration: none;
}

.aside-cta-block {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: var(--c-lime-dim);
  border: 1px solid var(--c-lime);
  color: var(--c-lime);
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  min-height: 48px;
  margin-bottom: 10px;
  transition: background var(--transition);
  text-align: center;
}
.aside-cta-block:last-child { margin-bottom: 0; }
.aside-cta-block:hover {
  background: var(--c-lime);
  color: var(--c-dark);
  text-decoration: none;
}

/* =============================================
   贴纸 / 徽章
   ============================================= */
.sticker-block {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.sticker {
  display: inline-block;
  background: var(--c-lime);
  color: var(--c-dark);
  font-family: var(--font-head);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border-radius: 2px;
  transform: rotate(-3deg);
  box-shadow: 3px 3px 0 var(--c-dark2);
}
.sticker-alt {
  background: var(--c-dark2);
  border: 2px solid var(--c-lime);
  color: var(--c-lime);
  transform: rotate(2deg);
}
.sticker-lg {
  font-size: 1.1rem;
  padding: 8px 18px;
}

/* =============================================
   子页卡片表格 (table > tbody > tr > td)
   ============================================= */
.cards-section {
  margin-bottom: 56px;
}

.table-scroll { overflow-x: auto; }

.cards-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 12px;
}
.cards-table tbody tr { }
.card-cell { padding: 0; }

.child-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 24px;
  background: var(--c-dark3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
  animation: staggerIn 0.4s ease both;
  animation-delay: var(--delay, 0ms);
}
.child-card:hover {
  border-color: var(--c-lime);
  background: var(--c-lime-dim);
  transform: translateY(-2px) rotate(-0.3deg);
  text-decoration: none;
  color: var(--c-text);
}

.card-badge {
  display: inline-block;
  background: var(--c-lime);
  color: var(--c-dark);
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  padding: 2px 8px;
  border-radius: 2px;
  width: fit-content;
}

.card-title {
  font-family: var(--font-head);
  font-size: 1.15rem;
  color: #fff;
  letter-spacing: 0.03em;
  display: block;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--c-muted);
  display: block;
}

.card-date {
  font-size: 0.8rem;
  color: var(--c-muted);
  display: block;
}

/* =============================================
   兄弟页卡片网格
   ============================================= */
.sibling-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.sibling-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--c-dark3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  transition: border-color var(--transition), transform var(--transition);
  animation: staggerIn 0.4s ease both;
  animation-delay: var(--delay, 0ms);
}
.sibling-card:hover {
  border-color: var(--c-lime);
  transform: translateY(-3px) rotate(-0.5deg);
  text-decoration: none;
  color: var(--c-text);
}
.sibling-card strong {
  font-family: var(--font-head);
  font-size: 1rem;
  color: #fff;
  letter-spacing: 0.04em;
}

/* =============================================
   FAQ / 特殊页面装饰
   ============================================= */
.faq-hero,
.changelog-hero,
.about-hero,
.privacy-hero {
  min-height: 180px;
}

.faq-deco,
.about-deco {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  z-index: 2;
}

/* =============================================
   页脚 (footer > article×n)
   ============================================= */
.site-footer {
  background: var(--c-dark2);
  border-top: 2px solid var(--c-border);
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  margin-top: auto;
}

.site-footer > article {
  padding: 40px 36px;
}

.footer-brand {
  flex: 1 1 320px;
  border-right: 1px solid var(--c-border);
}

.footer-big-brand {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: var(--c-lime);
  letter-spacing: 0.04em;
  line-height: 1;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 20px var(--c-lime-glow));
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--c-muted);
  max-width: 320px;
}

.footer-links {
  flex: 1 1 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
}

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

.footer-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.88rem;
  color: var(--c-text);
  padding: 5px 0;
  min-height: 40px;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.footer-link:hover {
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
  text-decoration: none;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--c-muted);
  margin-top: auto;
}

/* =============================================
   跑马灯装饰（首页）
   ============================================= */
.marquee-wrap {
  overflow: hidden;
  background: var(--c-lime);
  color: var(--c-dark);
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: 0.15em;
  padding: 8px 0;
  white-space: nowrap;
}
.marquee-inner {
  display: inline-block;
  animation: marquee 18s linear infinite;
}

/* =============================================
   动效 Keyframes
   ============================================= */
@keyframes jitter {
  0%, 100% { transform: rotate(-4deg) translateX(0); }
  25% { transform: rotate(-5deg) translateX(-1px); }
  50% { transform: rotate(-3deg) translateX(1px); }
  75% { transform: rotate(-4.5deg) translateX(-1px); }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes staggerIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes floatBadge {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50% { transform: translateY(-4px) rotate(-3deg); }
}

.badge-float {
  animation: floatBadge 2.5s ease-in-out infinite;
}

/* =============================================
   prefers-reduced-motion
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* =============================================
   响应式断点
   ============================================= */

/* 中等屏 ≤1024px */
@media (max-width: 1024px) {
  :root { --nav-w: 200px; }
  .sidebar { width: 220px; }
  .main-content { padding: 32px 24px; }
}

/* 小屏 ≤768px */
@media (max-width: 768px) {
  :root {
    --nav-w: 100%;
    --nav-w-collapsed: 100%;
  }

  .site-wrap { flex-direction: column; }

  .sidenav {
    position: relative;
    height: auto;
    width: 100% !important;
    border-right: none;
    border-bottom: 2px solid var(--c-border);
    overflow: visible;
  }

  .sidenav summary {
    position: relative;
  }

  .nav-menu {
    padding: 8px 0 16px;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
    padding: 10px 12px;
  }

  .nav-menu li { width: auto; }

  .nav-link {
    font-size: 0.82rem;
    padding: 8px 12px;
    white-space: normal;
    border-left: none;
    border-bottom: 2px solid transparent;
  }
  .nav-link:hover,
  .nav-link.active {
    border-left: none;
    border-bottom-color: var(--c-lime);
  }

  .sidenav:not([open]) .nav-link {
    font-size: 0.82rem;
    padding: 8px 12px;
    justify-content: flex-start;
  }
  .sidenav:not([open]) .nav-link::before { display: none; }

  .nav-cta-wrap {
    margin-top: 0;
    padding: 0 4px;
  }
  .nav-cta { font-size: 1rem; padding: 10px 14px; }
  .sidenav:not([open]) .nav-cta { font-size: 1rem; padding: 10px 14px; }
  .sidenav:not([open]) .nav-cta::before { display: none; }
  .nav-toggle-hint { display: none; }

  .page-body { margin-left: 0; }

  .hero-section,
  .guide-hero {
    height: 55vw;
    min-height: 240px;
  }

  .hero-content {
    padding: 20px 20px;
    max-width: 100%;
    text-align: right;
  }

  .hero-badge { left: 16px; bottom: 12px; }

  .inner-hero {
    padding: 32px 20px;
    flex-direction: column;
    align-items: flex-start;
  }

  .main-content { padding: 24px 16px; }

  .content-section.with-aside {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    position: static;
  }

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

  .site-footer {
    flex-direction: column;
  }
  .footer-brand {
    border-right: none;
    border-bottom: 1px solid var(--c-border);
  }
  .site-footer > article { padding: 28px 20px; }

  .content-figure { padding: 20px 16px; }
}

/* 超小屏 ≤400px */
@media (max-width: 400px) {
  .hero-h1 { font-size: 1.8rem; }
  .inner-h1 { font-size: 1.6rem; }
  .section-heading { font-size: 1.5rem; }
  .footer-big-brand { font-size: 2.2rem; }
}