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

/* ===== CSS 自定义属性 ===== */
:root {
  --clr-green: #87ff71;
  --clr-blue: #01cdfe;
  --clr-dark: #192617;
  --clr-darker: #0e1a0d;
  --clr-mid: #1e3019;
  --clr-surface: #1a2e18;
  --clr-border: #2a4025;
  --clr-muted: #5a8a50;
  --clr-text: #c8f0c0;
  --clr-text-dim: #7ab870;
  --clr-pink: #ff71ce;
  --clr-purple: #b967ff;
  --ff-head: 'Bebas Neue', 'Arial Black', Impact, sans-serif;
  --ff-body: 'Source Sans 3', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --nav-h: 64px;
  --max-w: 1100px;
  --radius: 4px;
  --gap: clamp(1rem, 3vw, 2rem);
}

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

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  background-color: var(--clr-dark);
  color: var(--clr-text);
  font-family: var(--ff-body);
  font-size: clamp(1rem, 2.2vw, 1.125rem);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Scanline overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0,0,0,0.08) 3px,
    rgba(0,0,0,0.08) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

a { color: var(--clr-green); text-decoration: none; transition: color .2s; }
a:hover, a:focus-visible { color: var(--clr-blue); }
a:focus-visible { border-radius: 2px; box-shadow: 0 0 0 2px var(--clr-blue); }

img { max-width: 100%; height: auto; display: block; }
table { width: 100%; }
p { margin-block-end: 1em; }

h1, h2, h3, h4 {
  font-family: var(--ff-head);
  letter-spacing: .04em;
  line-height: 1.1;
  color: var(--clr-green);
}

/* ===== Site Wrap ===== */
.site-wrap { display: flex; flex-direction: column; min-height: 100vh; }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(14, 26, 13, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-block-end: 1px solid var(--clr-border);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.brand-mark {
  font-family: var(--ff-head);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  color: var(--clr-green);
  letter-spacing: .08em;
  white-space: nowrap;
  filter: drop-shadow(0 0 8px var(--clr-green));
  transition: filter .2s;
}
.brand-mark:hover { filter: drop-shadow(0 0 16px var(--clr-blue)); color: var(--clr-blue); }

.primary-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem .75rem;
  align-items: center;
  justify-content: center;
}

.nav-item {
  color: var(--clr-text-dim);
  font-family: var(--ff-body);
  font-weight: 600;
  font-size: .9rem;
  padding: .55rem .6rem;
  border-radius: var(--radius);
  white-space: nowrap;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  transition: color .2s, background .2s;
}
.nav-item:hover, .nav-item:focus-visible { color: var(--clr-green); background: rgba(135,255,113,.08); }
.nav-item[aria-current="page"] { color: var(--clr-green); border-block-end: 2px solid var(--clr-green); }

.nav-search {
  display: flex;
  gap: .35rem;
  align-items: center;
}

.search-input {
  background: var(--clr-mid);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  border-radius: var(--radius);
  padding: .4rem .7rem;
  font-size: .875rem;
  font-family: var(--ff-body);
  width: clamp(100px, 14vw, 180px);
  height: 40px;
  transition: border-color .2s;
}
.search-input::placeholder { color: var(--clr-muted); }
.search-input:focus { border-color: var(--clr-blue); box-shadow: 0 0 0 2px rgba(1,205,254,.25); }
.search-input:focus-visible { border-color: var(--clr-blue); }

.search-btn {
  background: var(--clr-green);
  color: var(--clr-darker);
  border: none;
  border-radius: var(--radius);
  padding: .4rem .8rem;
  font-family: var(--ff-head);
  font-size: 1rem;
  cursor: pointer;
  height: 40px;
  min-width: 40px;
  letter-spacing: .05em;
  transition: background .2s, filter .2s;
}
.search-btn:hover { background: var(--clr-blue); filter: drop-shadow(0 0 6px var(--clr-blue)); }

/* ===== Content Inner (max-width wrapper) ===== */
.content-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
  width: 100%;
}

/* ===== Hero (shared) ===== */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(135,255,113,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(135,255,113,.06) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero-slice {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--clr-dark);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

/* ===== Home Hero ===== */
.home-hero {
  position: relative;
  min-height: 45vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, var(--clr-darker) 0%, #0d2a0b 50%, #001a24 100%);
  overflow: hidden;
  padding-block-end: 60px;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2rem;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: clamp(2rem, 6vh, 4rem) clamp(1rem, 4vw, 2.5rem);
  width: 100%;
}

.hero-content { max-width: 580px; }

.hero-h1 {
  font-size: clamp(2.8rem, 8vw, 6rem);
  color: var(--clr-green);
  line-height: 1;
  filter: drop-shadow(0 0 20px rgba(135,255,113,.5));
  margin-block-end: .75rem;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-text-dim);
  margin-block-end: 1.5rem;
  max-width: 48ch;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--clr-green);
  border: 2px solid var(--clr-green);
  border-radius: var(--radius);
  padding: .65rem 1.8rem;
  font-family: var(--ff-head);
  font-size: 1.3rem;
  letter-spacing: .1em;
  min-height: 48px;
  cursor: pointer;
  transition: background .2s, color .2s, filter .2s;
}
.cta-btn:hover { background: var(--clr-green); color: var(--clr-darker); filter: drop-shadow(0 0 12px var(--clr-green)); }

.hero-media { position: relative; z-index: 1; }
.hero-img { border-radius: var(--radius); border: 1px solid var(--clr-border); max-width: 340px; }

/* ===== Home Content Area ===== */
.home-content-area {
  flex: 1;
  padding-block: var(--gap) calc(var(--gap) * 2);
}

/* ===== Topic Hero ===== */
.topic-main { flex: 1; }
.topic-hero {
  position: relative;
  background: linear-gradient(160deg, var(--clr-darker) 0%, #0d1f28 100%);
  overflow: hidden;
  padding-block-end: 60px;
}
.topic-hero-inner {
  position: relative;
  z-index: 2;
  padding: clamp(2rem, 5vh, 3.5rem) clamp(1rem, 4vw, 2.5rem);
  max-width: var(--max-w);
  margin-inline: auto;
}
.topic-h1 {
  font-size: clamp(2rem, 6vw, 4rem);
  color: var(--clr-blue);
  filter: drop-shadow(0 0 16px rgba(1,205,254,.5));
  margin-block: .5rem .75rem;
}
.topic-lead { color: var(--clr-text-dim); max-width: 60ch; }
.topic-body-area { padding-block: var(--gap) calc(var(--gap) * 2); }

/* ===== Article ===== */
.article-main { flex: 1; }
.article-wrap {}
.article-header-band {
  position: relative;
  background: linear-gradient(160deg, var(--clr-darker) 0%, #0f1e0d 100%);
  overflow: hidden;
  padding-block: clamp(2rem, 5vh, 3rem) 3.5rem;
}
.article-header-band .content-inner { position: relative; z-index: 2; }
.article-h1 {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  color: var(--clr-green);
  margin-block: .5rem .75rem;
  filter: drop-shadow(0 0 12px rgba(135,255,113,.4));
}
.article-hero-media { margin-block-end: 1.5rem; }
.article-hero-img { width: 100%; max-height: 420px; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--clr-border); }
.article-body-wrap { padding-block: var(--gap) calc(var(--gap) * 2); }
.article-body { max-width: 72ch; }

/* ===== About / Privacy ===== */
.about-main, .privacy-main { flex: 1; }
.about-header-band, .privacy-header-band {
  position: relative;
  background: linear-gradient(160deg, var(--clr-darker) 0%, #0a1f1e 100%);
  overflow: hidden;
  padding-block: clamp(2rem, 5vh, 3rem) 3.5rem;
}
.about-header-band .content-inner,
.privacy-header-band .content-inner { position: relative; z-index: 2; }
.page-h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--clr-blue);
  margin-block: .5rem .75rem;
  filter: drop-shadow(0 0 14px rgba(1,205,254,.4));
}
.page-lead { color: var(--clr-text-dim); max-width: 60ch; }
.about-content, .privacy-content { padding-block: var(--gap) calc(var(--gap) * 2); }
.legal-body { max-width: 72ch; }

/* ===== Breadcrumb ===== */
.breadcrumb {
  font-size: .85rem;
  color: var(--clr-muted);
  margin-block-end: .75rem;
  display: flex;
  flex-wrap: wrap;
  gap: .25rem;
  align-items: center;
}
.breadcrumb a { color: var(--clr-muted); }
.breadcrumb a:hover { color: var(--clr-green); }

/* ===== Article Meta ===== */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .6rem;
  align-items: center;
  font-size: .875rem;
  color: var(--clr-muted);
  margin-block-end: .5rem;
}
.meta-label { color: var(--clr-muted); }
.meta-date { color: var(--clr-text-dim); }
.meta-sep { color: var(--clr-muted); }

/* ===== Section Heading ===== */
.section-heading {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  color: var(--clr-green);
  margin-block: 2rem .75rem;
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.eyebrow {
  display: inline-block;
  font-family: var(--ff-body);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .15em;
  color: var(--clr-blue);
  text-transform: uppercase;
  border-inline-start: 3px solid var(--clr-blue);
  padding-inline-start: .5rem;
}

/* ===== Section Block ===== */
.section-block { margin-block-end: 2.5rem; }

/* ===== Page Body (content HTML) ===== */
.page-body {
  color: var(--clr-text);
  line-height: 1.75;
}
.page-body h2 {
  font-size: clamp(1.3rem, 3vw, 2rem);
  color: var(--clr-green);
  margin-block: 2rem .6rem;
  border-block-end: 1px solid var(--clr-border);
  padding-block-end: .4rem;
}
.page-body h3 {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--clr-blue);
  margin-block: 1.5rem .5rem;
}
.page-body p { margin-block-end: 1em; }
.page-body ul, .page-body ol { padding-inline-start: 1.5em; margin-block-end: 1em; }
.page-body li { margin-block-end: .35em; }
.page-body a { color: var(--clr-green); border-block-end: 1px solid rgba(135,255,113,.3); }
.page-body a:hover { color: var(--clr-blue); border-block-end-color: var(--clr-blue); }
.page-body blockquote {
  border-inline-start: 3px solid var(--clr-green);
  padding: .75rem 1rem;
  background: var(--clr-surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--clr-text-dim);
  margin-block: 1.5rem;
}
.page-body code {
  background: var(--clr-mid);
  color: var(--clr-blue);
  padding: .1em .35em;
  border-radius: 3px;
  font-size: .9em;
}
.page-body table {
  border-spacing: 0;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-block-end: 1.5em;
}
.page-body th {
  background: var(--clr-mid);
  color: var(--clr-green);
  padding: .6rem .8rem;
  font-family: var(--ff-head);
  letter-spacing: .05em;
  text-align: start;
}
.page-body td {
  padding: .55rem .8rem;
  border-block-start: 1px solid var(--clr-border);
}
.page-body time { color: var(--clr-blue); font-weight: 600; }

/* ===== Card Table (home children) ===== */
.card-table { border-spacing: 0; }
.card-cell {
  padding: .5rem 0;
  border-block-end: 1px solid var(--clr-border);
}
.card-link {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: .2rem .5rem;
  padding: .6rem .8rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  background: var(--clr-surface);
  color: var(--clr-text);
  transition: border-color .2s, background .2s;
}
.card-link:hover { border-color: var(--clr-green); background: rgba(135,255,113,.05); color: var(--clr-text); }
.card-title {
  grid-column: 1;
  font-family: var(--ff-head);
  font-size: 1.15rem;
  color: var(--clr-green);
  letter-spacing: .04em;
}
.card-desc { grid-column: 1; font-size: .875rem; color: var(--clr-text-dim); }
.card-date { grid-column: 2; grid-row: 1; font-size: .8rem; color: var(--clr-muted); white-space: nowrap; align-self: start; }

/* ===== Topic Table (home topics) ===== */
.topic-table { border-spacing: 0; }
.topic-cell {
  padding: .4rem 0;
  border-block-end: 1px solid rgba(1,205,254,.15);
}
.topic-cell a {
  display: flex;
  align-items: center;
  padding: .55rem .8rem;
  color: var(--clr-blue);
  font-weight: 600;
  font-size: 1rem;
  gap: .5rem;
  min-height: 44px;
  border-inline-start: 2px solid transparent;
  transition: border-color .2s, color .2s;
}
.topic-cell a::before {
  content: '▶';
  font-size: .6rem;
  color: var(--clr-blue);
}
.topic-cell a:hover { color: var(--clr-green); border-inline-start-color: var(--clr-green); }

/* ===== Child Table (topic children) ===== */
.child-table { border-spacing: 0; }
.child-row { border-block-end: 1px solid var(--clr-border); }
.child-row:last-child { border-block-end: none; }
.child-thumb-cell { width: 100px; padding: .75rem .75rem .75rem 0; }
.child-thumb-cell img { width: 100px; height: 65px; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--clr-border); }
.child-info-cell { padding: .75rem 0; vertical-align: top; }
.child-link { display: block; margin-block-end: .3rem; }
.child-title {
  display: block;
  font-family: var(--ff-head);
  font-size: 1.2rem;
  color: var(--clr-green);
  letter-spacing: .04em;
  transition: color .2s;
}
.child-link:hover .child-title { color: var(--clr-blue); }
.child-desc { font-size: .875rem; color: var(--clr-text-dim); display: block; margin-block-end: .3rem; }
.child-date { font-size: .8rem; color: var(--clr-muted); }

/* ===== Related Table (article) ===== */
.related-section { margin-block: 3rem 1rem; }
.related-table { border-spacing: 0; }
.related-cell {
  padding: .4rem 0;
  border-block-end: 1px solid var(--clr-border);
}
.related-link {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .4rem .75rem;
  align-items: start;
  padding: .6rem .75rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  color: var(--clr-text);
  transition: border-color .2s, background .2s;
}
.related-link::before {
  content: '›';
  font-size: 1.4rem;
  color: var(--clr-green);
  line-height: 1;
  align-self: start;
  margin-block-start: .1rem;
}
.related-link:hover { border-color: var(--clr-blue); background: rgba(1,205,254,.05); color: var(--clr-text); }
.related-title { display: block; font-weight: 600; color: var(--clr-green); transition: color .2s; }
.related-link:hover .related-title { color: var(--clr-blue); }
.related-desc { display: block; font-size: .85rem; color: var(--clr-text-dim); }

/* ===== About / Privacy links table ===== */
.about-links-table, .privacy-links-table { border-spacing: 0; margin-block-start: .5rem; }
.about-link-cell {
  border-block-end: 1px solid var(--clr-border);
  padding: .1rem 0;
}
.about-link-cell a {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem .75rem;
  min-height: 44px;
  font-weight: 600;
  color: var(--clr-blue);
  border-inline-start: 2px solid transparent;
  transition: border-color .2s, color .2s;
}
.about-link-cell a:hover { color: var(--clr-green); border-inline-start-color: var(--clr-green); }

/* ===== Footer ===== */
.site-footer {
  background: var(--clr-darker);
  border-block-start: 1px solid var(--clr-border);
  padding-block: 2.5rem 1.5rem;
  margin-block-start: auto;
}

.footer-cols {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-block-end: 2rem;
}

.footer-dl {}
.footer-heading {
  font-family: var(--ff-head);
  font-size: 1.1rem;
  color: var(--clr-green);
  letter-spacing: .08em;
  margin-block-end: .75rem;
  padding-block-end: .4rem;
  border-block-end: 1px solid var(--clr-border);
}
.footer-dl dd { margin-inline-start: 0; margin-block-end: .3rem; }
.footer-dl dd a {
  color: var(--clr-text-dim);
  font-size: .9rem;
  padding-block: .2rem;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  transition: color .2s;
}
.footer-dl dd a:hover { color: var(--clr-green); }

.footer-bottom {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: .5rem;
  border-block-start: 1px solid var(--clr-border);
  padding-block-start: 1rem;
  font-size: .85rem;
}
.footer-copy { color: var(--clr-muted); }
.footer-links { display: flex; gap: 1rem; }
.footer-links a { color: var(--clr-muted); font-size: .85rem; }
.footer-links a:hover { color: var(--clr-green); }

/* ===== Glitch Animation ===== */
@keyframes glitch-shift {
  0%, 100% { clip-path: inset(0 0 100% 0); transform: translateX(0); }
  20% { clip-path: inset(15% 0 60% 0); transform: translateX(-3px); }
  40% { clip-path: inset(40% 0 30% 0); transform: translateX(3px); }
  60% { clip-path: inset(70% 0 5% 0); transform: translateX(-2px); }
  80% { clip-path: inset(5% 0 80% 0); transform: translateX(2px); }
}

.hero-h1 {
  position: relative;
}
.hero-h1::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  color: var(--clr-blue);
  animation: glitch-shift 4s infinite step-end;
  opacity: .5;
  pointer-events: none;
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-h1::after { animation: none; }
  * { transition-duration: .01ms !important; }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .site-header {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    height: auto;
    padding-block: .75rem;
    gap: .5rem;
  }
  .primary-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    gap: .15rem .5rem;
  }
  .nav-search { grid-row: 1; grid-column: 2; justify-self: end; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-media { display: none; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .site-header { padding-inline: 1rem; }
  .hero-h1 { font-size: clamp(2.2rem, 10vw, 3.5rem); }
  .primary-nav { gap: .1rem .25rem; }
  .nav-item { font-size: .8rem; padding: .5rem .4rem; }
  .footer-cols { grid-template-columns: 1fr; gap: 1.5rem; }
  .child-thumb-cell { display: none; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 375px) {
  body { font-size: 1rem; }
  .nav-search { display: none; }
  .hero-h1 { font-size: 2.2rem; }
}