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

/* ===== CSS 变量 ===== */
:root {
  --green: #00ff80;
  --blue: #0000ff;
  --black: #000000;
  --white: #ffffff;
  --gray: #111111;
  --gray2: #222222;
  --border: 3px solid var(--green);
  --border-blue: 3px solid var(--blue);
  --border-white: 2px solid var(--white);
  --font-main: 'Rubik', 'Nunito Sans', system-ui, sans-serif;
  --font-mono: 'Rubik', monospace;
  --max-w: 1200px;
  --content-max: 800px;
  --gap: 24px;
  --gap-lg: 48px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background: var(--black);
  color: var(--white);
}

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.65;
  background: var(--black);
  color: var(--white);
  overflow-x: hidden;
}

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

a {
  color: var(--green);
  text-decoration: none;
  font-weight: 700;
}

a:hover {
  color: var(--white);
  background: var(--blue);
}

ul, ol, menu {
  list-style: none;
}

/* ===== 全局排版 ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-main);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 6vw, 4rem); }
h2 { font-size: clamp(1.4rem, 3.5vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }

p {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

/* ===== 布局容器 ===== */
.site-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: var(--black);
  border-bottom: var(--border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gap);
  height: 64px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo:hover {
  background: none;
}

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

.brand-name {
  font-family: var(--font-main);
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--green);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.main-nav {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* details/summary 导航 */
.nav-details {
  position: relative;
}

.nav-details[open] > .nav-toggle::after {
  content: '▲';
}

.nav-toggle {
  cursor: pointer;
  padding: 8px 16px;
  background: var(--blue);
  color: var(--white);
  font-weight: 700;
  font-size: 0.85rem;
  border: 2px solid var(--white);
  list-style: none;
  display: none;
  min-height: 40px;
  align-items: center;
}

.nav-toggle::after {
  content: '▼';
  margin-left: 6px;
}

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

.nav-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background: var(--black);
  border: var(--border);
  min-width: 260px;
  z-index: 200;
}

.nav-menu li a {
  display: block;
  padding: 12px 16px;
  color: var(--white);
  font-weight: 700;
  border-bottom: 1px solid var(--gray2);
  font-size: 0.9rem;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-menu li a:hover {
  background: var(--green);
  color: var(--black);
}

.nav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
  font-weight: 700;
  font-size: 0.8rem;
  min-height: 40px;
  white-space: nowrap;
  transition: none;
}

.pill-btn:hover,
.pill-btn--active {
  background: var(--green);
  color: var(--black);
  border-color: var(--green);
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  background: var(--green);
  color: var(--black);
  font-weight: 900;
  font-size: 0.85rem;
  border: none;
  min-height: 40px;
  white-space: nowrap;
  flex-shrink: 0;
}

.contact-btn:hover {
  background: var(--blue);
  color: var(--white);
}

/* 粘性锚点条 */
.sticky-anchors {
  position: sticky;
  top: 64px;
  z-index: 90;
  background: var(--gray);
  border-bottom: 2px solid var(--blue);
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  overflow-x: auto;
  padding: 0 var(--gap);
}

.anchor-pill {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 700;
  border-right: 1px solid var(--gray2);
  min-height: 44px;
  white-space: nowrap;
}

.anchor-pill:hover,
.anchor-pill--active {
  background: var(--blue);
  color: var(--white);
}

/* ===== Hero 首页斜切 ===== */
.hero--home {
  position: relative;
  min-height: 100vh;
  background: var(--black);
  display: flex;
  align-items: flex-end;
  padding-top: 128px;
  overflow: hidden;
  border-bottom: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--gap-lg) var(--gap);
  padding-bottom: 100px;
  width: 100%;
}

.hero__h1 {
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 900;
  color: var(--green);
  text-align: left;
  line-height: 1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  border-left: 8px solid var(--blue);
  padding-left: 20px;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--white);
  max-width: 600px;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  padding: 16px 32px;
  background: var(--blue);
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 900;
  border: 3px solid var(--white);
  min-height: 56px;
}

.hero__cta:hover {
  background: var(--green);
  color: var(--black);
  border-color: var(--green);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.25;
}

.hero__media .hero-img,
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__slash {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 120px;
  background: var(--black);
  clip-path: polygon(0 60%, 100% 0%, 100% 100%, 0% 100%);
  z-index: 3;
}

/* ===== 页面级 Hero ===== */
.page-hero {
  margin-top: 64px;
  background: var(--gray);
  border-bottom: var(--border);
  padding: 48px var(--gap) 32px;
}

.page-hero__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.page-hero h1 {
  color: var(--green);
  margin: 8px 0 12px;
}

.page-hero__desc {
  color: #cccccc;
  font-size: 1rem;
  max-width: 700px;
}

.page-hero--category { border-left: 8px solid var(--blue); }
.page-hero--about { border-left: 8px solid var(--green); }
.page-hero--privacy { border-left: 8px solid #888888; }
.page-hero--data { border-left: 8px solid var(--blue); }

/* ===== Entry Hero ===== */
.entry-hero {
  margin-top: 64px;
  background: var(--gray);
  border-bottom: var(--border);
  display: flex;
  gap: 0;
  min-height: 280px;
}

.entry-hero__img {
  width: 340px;
  flex-shrink: 0;
  overflow: hidden;
  border-right: var(--border);
}

.entry-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.entry-hero__info {
  padding: 40px var(--gap);
  flex: 1;
}

.entry-hero__info h1 {
  color: var(--green);
  margin: 8px 0 12px;
}

.entry-hero__desc {
  color: #cccccc;
  max-width: 600px;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  font-size: 0.85rem;
  color: #888888;
  margin-bottom: 8px;
}

.breadcrumb a {
  color: var(--green);
  font-weight: 600;
}

.breadcrumb span {
  margin: 0 4px;
}

/* ===== 日期 ===== */
.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 8px 0;
}

.entry-date {
  font-size: 0.82rem;
  color: #888888;
  font-weight: 600;
  padding: 4px 8px;
  border: 1px solid #444444;
}

.entry-date--mod {
  border-color: var(--blue);
  color: #aaaaaa;
}

/* ===== 主内容区 ===== */
main {
  flex: 1;
  padding-top: 0;
}

.content-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--gap-lg) var(--gap);
}

.content-with-aside {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--gap-lg);
  align-items: start;
}

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

/* ===== 正文内容样式 ===== */
.page-content {
  font-size: 1rem;
  line-height: 1.75;
  color: #e0e0e0;
}

.page-content h2 {
  font-size: 1.5rem;
  color: var(--green);
  margin: 2rem 0 1rem;
  border-bottom: 3px solid var(--blue);
  padding-bottom: 8px;
}

.page-content h3 {
  font-size: 1.2rem;
  color: var(--white);
  margin: 1.5rem 0 0.75rem;
  padding-left: 12px;
  border-left: 4px solid var(--green);
}

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

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

.page-content li {
  margin-bottom: 0.5rem;
  line-height: 1.65;
}

.page-content a {
  color: var(--green);
  text-decoration: underline;
  text-decoration-color: var(--blue);
}

.page-content a:hover {
  background: var(--blue);
  color: var(--white);
  text-decoration: none;
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.page-content th {
  background: var(--blue);
  color: var(--white);
  padding: 10px 12px;
  font-weight: 700;
  border: 2px solid var(--black);
  text-align: left;
}

.page-content td {
  padding: 8px 12px;
  border: 1px solid #333333;
  color: #cccccc;
}

.page-content tr:nth-child(even) td {
  background: var(--gray2);
}

/* ===== 侧边栏 ===== */
.content-aside {
  position: sticky;
  top: 120px;
  background: var(--gray);
  border: var(--border);
  padding: var(--gap);
}

.content-aside h2 {
  font-size: 1rem;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--blue);
}

.content-aside h2 span {
  display: inline;
}

.aside-links {
  margin-bottom: 24px;
}

.aside-links li {
  border-bottom: 1px solid #333333;
}

.aside-links li a {
  display: block;
  padding: 10px 0;
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.aside-links li a:hover {
  color: var(--green);
  background: none;
  padding-left: 8px;
}

.aside-parent {
  margin-top: 12px;
}

.aside-parent a {
  color: var(--blue);
  font-size: 0.9rem;
}

/* ===== 区块标题 ===== */
.section-title {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  color: var(--white);
  margin-bottom: var(--gap);
  padding-bottom: 10px;
  border-bottom: 4px solid var(--green);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::before {
  content: '';
  display: block;
  width: 16px;
  height: 16px;
  background: var(--blue);
  flex-shrink: 0;
}

.section-title span {
  display: inline;
}

/* ===== 分类卡片 ===== */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--gap);
}

.cat-card {
  background: var(--gray);
  border: 3px solid var(--white);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.cat-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.cat-card__link:hover {
  background: none;
}

.cat-card__link:hover .cat-card__body {
  background: var(--gray2);
}

.cat-card__body {
  padding: var(--gap);
  flex: 1;
}

.cat-card__body h3 {
  font-size: 1.1rem;
  color: var(--green);
  margin-bottom: 8px;
}

.cat-card__body h3 span {
  display: inline;
}

.cat-card__body p {
  font-size: 0.9rem;
  color: #aaaaaa;
  margin-bottom: 8px;
}

.cat-card__count {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
}

.cat-card__line {
  height: 6px;
  background: var(--green);
  margin-top: auto;
}

.cat-card:hover .cat-card__line {
  background: var(--blue);
}

/* ===== 平台卡片 ===== */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--gap);
}

.entry-card {
  background: var(--gray);
  border: 2px solid #444444;
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.entry-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.entry-card__link:hover {
  background: none;
}

.entry-card__link:hover .entry-card__body {
  background: var(--gray2);
}

.entry-card__body {
  padding: 20px;
  flex: 1;
}

.entry-card__body h3 {
  font-size: 1rem;
  color: var(--white);
  margin-bottom: 6px;
}

.entry-card__body h3 span {
  display: inline;
}

.entry-card__body p {
  font-size: 0.88rem;
  color: #aaaaaa;
  margin-bottom: 8px;
}

.entry-card__date {
  font-size: 0.78rem;
  color: #666666;
  font-weight: 600;
}

.entry-card__accent {
  height: 4px;
  background: var(--green);
}

.entry-card:hover .entry-card__accent {
  background: var(--blue);
}

/* ===== 子页列表 (dl) ===== */
.children-list {
  margin-top: var(--gap-lg);
}

.child-dl {
  display: grid;
  gap: 16px;
}

.child-dl dt {
  background: var(--gray2);
  border-left: 5px solid var(--green);
  padding: 0;
}

.child-dl dt a {
  display: block;
  padding: 14px 18px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--green);
  min-height: 44px;
}

.child-dl dt a:hover {
  background: var(--green);
  color: var(--black);
}

.child-dl dd {
  padding: 12px 18px 16px 18px;
  background: var(--gray);
  border: 1px solid #333333;
  border-top: none;
  font-size: 0.9rem;
  color: #cccccc;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.child-dl dd p {
  margin: 0 0 6px;
  line-height: 1.6;
}

.child-img {
  width: 80px;
  height: 60px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid #444;
}

/* ===== 数据卡片 ===== */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--gap);
}

.data-card {
  background: var(--gray);
  border: 2px solid var(--blue);
  border-radius: 10px;
  overflow: hidden;
}

.data-card a {
  display: block;
  padding: 20px;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.data-card a:hover {
  background: var(--gray2);
}

.data-card h3 {
  font-size: 1rem;
  color: var(--green);
  margin-bottom: 8px;
}

.data-card h3 span {
  display: inline;
}

.data-card p {
  font-size: 0.88rem;
  color: #aaaaaa;
}

.data-card__line {
  height: 4px;
  background: var(--blue);
  margin-top: 12px;
}

/* ===== 关联/相关区块 ===== */
.related-section,
.cats-section,
.entries-section,
.data-section {
  background: var(--gray);
  border-top: var(--border);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--gray2);
  border-top: 4px solid var(--green);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 0;
  margin-top: auto;
}

.site-footer > div {
  padding: var(--gap-lg) var(--gap);
  border-right: 1px solid #333333;
}

.site-footer > div:last-of-type {
  border-right: none;
}

.footer-bigname {
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--green);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.footer-desc {
  color: #888888;
  font-size: 0.9rem;
  max-width: 400px;
}

.footer-nav h3,
.footer-info h3 {
  font-size: 0.9rem;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--blue);
}

.footer-nav h3 span,
.footer-info h3 span {
  display: inline;
}

.footer-nav ul li {
  border-bottom: 1px solid #333333;
}

.footer-nav ul li a {
  display: block;
  padding: 8px 0;
  color: #cccccc;
  font-size: 0.88rem;
  font-weight: 600;
  min-height: 40px;
  display: flex;
  align-items: center;
}

.footer-nav ul li a:hover {
  color: var(--green);
  background: none;
}

.footer-info p {
  color: #888888;
  font-size: 0.88rem;
  margin-bottom: 12px;
}

.footer-link {
  display: inline-block;
  color: var(--green);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.footer-link:hover {
  background: var(--blue);
  color: var(--white);
  padding: 0 4px;
}

.footer-copy {
  grid-column: 1 / -1;
  background: var(--black);
  border-top: 2px solid #333333;
  padding: 16px var(--gap);
  font-size: 0.82rem;
  color: #666666;
  text-align: center;
}

/* ===== Scroll Reveal 动效 ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===== 悬停微动效 ===== */
.cat-card,
.entry-card,
.data-card {
  transition: border-color 0s, transform 0s;
}

.cat-card:hover,
.entry-card:hover,
.data-card:hover {
  border-color: var(--green);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--green);
}

@media (prefers-reduced-motion: reduce) {
  .cat-card,
  .entry-card,
  .data-card {
    transition: none;
  }
  .cat-card:hover,
  .entry-card:hover,
  .data-card:hover {
    transform: none;
    box-shadow: none;
  }
}

/* ===== 断点 ===== */
@media (max-width: 960px) {
  .content-with-aside {
    grid-template-columns: 1fr;
  }

  .content-aside {
    position: static;
    order: -1;
  }

  .site-footer {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-copy {
    grid-column: 1 / -1;
  }

  .nav-pills {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }
}

@media (max-width: 700px) {
  .site-footer {
    grid-template-columns: 1fr;
  }

  .site-footer > div {
    border-right: none;
    border-bottom: 1px solid #333333;
  }

  .hero--home {
    min-height: 100svh;
  }

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

  .entry-hero__img {
    width: 100%;
    height: 200px;
    border-right: none;
    border-bottom: var(--border);
  }

  .cat-grid,
  .entry-grid,
  .data-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0 12px;
    gap: 8px;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .contact-btn {
    padding: 8px 12px;
    font-size: 0.8rem;
  }

  .hero__h1 {
    font-size: 2rem;
    padding-left: 12px;
    border-left-width: 5px;
  }

  .content-section {
    padding: var(--gap) 12px;
  }

  .sticky-anchors {
    padding: 0 8px;
  }
}