@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400&family=Playfair+Display:ital@1&display=swap');

/* ── 变量 ── */
:root {
  --c-bg: #1a1a2e;
  --c-bg2: #0f0f1a;
  --c-red: #ff0000;
  --c-pink: #ff006e;
  --c-text: #e8e8f0;
  --c-text-dim: #9090b0;
  --c-border: rgba(255,0,110,0.3);
  --c-card: rgba(255,255,255,0.04);
  --c-glow-red: 0 0 8px #ff0000, 0 0 20px rgba(255,0,0,0.5);
  --c-glow-pink: 0 0 8px #ff006e, 0 0 24px rgba(255,0,110,0.6);
  --nav-h: 100px;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-display: 'Playfair Display', Georgia, serif;
  --radius: 10px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-main);
}

body.dark-body {
  background: var(--c-bg);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── CRT / 扫描线效果 ── */
.crt-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.08) 2px,
    rgba(0,0,0,0.08) 4px
  );
  animation: crt-flicker 8s infinite;
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,0,110,0.015) 0px,
    rgba(255,0,110,0.015) 1px,
    transparent 1px,
    transparent 3px
  );
}

@keyframes crt-flicker {
  0%,100% { opacity: 1; }
  92% { opacity: 1; }
  93% { opacity: 0.85; }
  94% { opacity: 1; }
  97% { opacity: 0.9; }
  98% { opacity: 1; }
}

/* ── 像素网格背景 ── */
body.dark-body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255,0,110,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,0,110,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ── 顶部头部 ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(26,26,46,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  box-shadow: 0 2px 20px rgba(255,0,0,0.15);
}

.hdr-brand-row {
  padding: 0 2rem;
}

.hdr-brand-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 56px;
  padding: 0.5rem 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

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

.brand-name {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-red);
  text-shadow: var(--c-glow-red);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.hdr-contact {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-text-dim);
  border: 1px solid var(--c-border);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.hdr-neon-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-red), var(--c-pink), transparent);
  opacity: 0.6;
}

/* ── 导航行 ── */
.hdr-nav-row {
  padding: 0 2rem;
  background: rgba(15,15,26,0.7);
}

.nav-aside {
  width: 100%;
}

.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: 0;
  align-items: stretch;
}

.main-nav ul li a {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  min-height: 44px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-text-dim);
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: color 0.2s, text-shadow 0.2s, background 0.2s;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.main-nav ul li a:hover,
.main-nav ul li a:focus {
  color: var(--c-pink);
  text-shadow: var(--c-glow-pink);
  border-bottom-color: var(--c-pink);
  background: rgba(255,0,110,0.06);
  outline: none;
}

/* ── 英雄区 ── */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  overflow: hidden;
  background: var(--c-bg2);
}

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

.hero-img-a {
  position: absolute;
  top: 0; left: 0;
  width: 60%; height: 75%;
  background: linear-gradient(135deg, #ff0000 0%, #1a1a2e 60%);
  clip-path: polygon(0 0, 100% 0, 80% 100%, 0 100%);
  opacity: 0.18;
}

.hero-img-b {
  position: absolute;
  bottom: 0; right: 0;
  width: 55%; height: 65%;
  background: linear-gradient(315deg, #ff006e 0%, #1a1a2e 60%);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.2;
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,0,0,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,0,0,0.07) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  padding: 2rem 3rem 2rem 2rem;
  text-align: right;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-pink);
  text-shadow: var(--c-glow-pink);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero-h1 {
  font-family: var(--font-main);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.15;
  color: #fff;
  margin-bottom: 1.25rem;
  text-shadow: 0 0 40px rgba(255,0,0,0.4);
}

.hero-sub {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-text-dim);
  margin-bottom: 2rem;
  max-width: 480px;
  margin-left: auto;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.85rem 2.2rem;
  background: linear-gradient(135deg, var(--c-red), var(--c-pink));
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  border-radius: var(--radius);
  box-shadow: 0 0 20px rgba(255,0,0,0.5), 0 4px 20px rgba(255,0,110,0.3);
  transition: box-shadow 0.25s, transform 0.2s;
  min-height: 44px;
  line-height: 1;
}

.hero-cta:hover, .hero-cta:focus {
  box-shadow: 0 0 35px rgba(255,0,0,0.8), 0 6px 30px rgba(255,0,110,0.5);
  transform: translateY(-2px);
  outline: none;
}

/* ── Glitch 文字 ── */
.glitch-text {
  position: relative;
}

.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  opacity: 0;
}

.glitch-text::before {
  color: var(--c-red);
  animation: glitch-before 4s infinite;
}

.glitch-text::after {
  color: var(--c-pink);
  animation: glitch-after 4s infinite;
}

@keyframes glitch-before {
  0%,90%,100% { opacity: 0; transform: none; }
  91% { opacity: 0.7; transform: skewX(-8deg) translateX(-3px); clip-path: polygon(0 20%,100% 20%,100% 40%,0 40%); }
  93% { opacity: 0; }
}

@keyframes glitch-after {
  0%,92%,100% { opacity: 0; transform: none; }
  93% { opacity: 0.6; transform: skewX(6deg) translateX(3px); clip-path: polygon(0 60%,100% 60%,100% 80%,0 80%); }
  96% { opacity: 0; }
}

/* ── 主内容区 ── */
.site-main {
  position: relative;
  z-index: 1;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.content-section {
  padding: 4rem 0;
}

.content-article {
  width: 100%;
}

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

/* ── 正文内容元素样式 ── */
.page-content h2 {
  font-family: var(--font-main);
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: #fff;
  margin: 3.5rem 0 0.5rem;
  line-height: 1.25;
  border-left: 4px solid var(--c-red);
  padding-left: 1rem;
  text-shadow: 0 0 20px rgba(255,0,0,0.25);
}

.page-content h2:first-child { margin-top: 0; }

.page-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-pink);
  margin: 2rem 0 0.75rem;
  text-shadow: 0 0 10px rgba(255,0,110,0.3);
}

.page-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  margin: 1.5rem 0 0.5rem;
}

.page-content p {
  margin: 0 0 1.2rem;
  line-height: 1.85;
}

.page-content ul,
.page-content ol {
  margin: 0 0 1.2rem 1.5rem;
  line-height: 1.8;
}

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

.page-content a {
  color: var(--c-pink);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s, text-shadow 0.2s;
}

.page-content a:hover {
  color: var(--c-red);
  text-shadow: var(--c-glow-red);
}

.page-content strong { color: #fff; font-weight: 700; }

.page-content blockquote {
  border-left: 3px solid var(--c-pink);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: rgba(255,0,110,0.06);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--c-text-dim);
}

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

.page-content th {
  background: rgba(255,0,0,0.15);
  color: var(--c-red);
  font-family: var(--font-mono);
  padding: 0.75rem 1rem;
  text-align: left;
  border: 1px solid var(--c-border);
}

.page-content td {
  padding: 0.65rem 1rem;
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--c-text);
}

.page-content tr:hover td {
  background: rgba(255,0,110,0.04);
}

/* ── div 区块（page.content 里的 div）── */
.page-content div {
  scroll-margin-top: calc(var(--nav-h) + 20px);
  padding: 3rem 0;
  border-bottom: 1px solid rgba(255,0,110,0.1);
}

.page-content div:last-child { border-bottom: none; }

/* ── 侧边注释 aside 出现在 content 里的样式 ── */
.page-content aside {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.9rem;
  color: var(--c-text-dim);
}

/* ── 页脚 ── */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--c-bg2);
  border-top: 1px solid var(--c-border);
  padding: 3rem 2rem 1.5rem;
}

.footer-form-block {
  max-width: 520px;
  margin: 0 auto 3rem;
  text-align: center;
}

.footer-form-title {
  font-family: var(--font-main);
  font-weight: 800;
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 0.4rem;
  text-shadow: var(--c-glow-red);
}

.footer-form-block .subtitle {
  font-size: 0.9rem;
  color: var(--c-text-dim);
  margin-bottom: 1.5rem;
}

.footer-contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-contact-form input,
.footer-contact-form textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  color: var(--c-text);
  font-family: var(--font-main);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 44px;
}

.footer-contact-form input:focus,
.footer-contact-form textarea:focus {
  border-color: var(--c-pink);
  box-shadow: 0 0 10px rgba(255,0,110,0.2);
}

.footer-contact-form textarea {
  min-height: 80px;
  resize: vertical;
}

.footer-contact-form button {
  padding: 0.85rem 2rem;
  background: linear-gradient(135deg, var(--c-red), var(--c-pink));
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  min-height: 44px;
  box-shadow: 0 0 16px rgba(255,0,0,0.35);
  transition: box-shadow 0.25s, transform 0.2s;
}

.footer-contact-form button:hover,
.footer-contact-form button:focus {
  box-shadow: 0 0 28px rgba(255,0,0,0.6);
  transform: translateY(-1px);
  outline: none;
}

.footer-cols {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-dl {
  min-width: 160px;
  flex: 1;
  max-width: 240px;
}

.footer-dl dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-red);
  text-shadow: var(--c-glow-red);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,0,0,0.25);
}

.footer-dl dd {
  font-size: 0.85rem;
  color: var(--c-text-dim);
  margin-bottom: 0.4rem;
  line-height: 1.6;
}

.footer-dl dd a {
  color: var(--c-text-dim);
  text-decoration: none;
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.25rem 0;
}

.footer-dl dd a:hover {
  color: var(--c-pink);
  text-shadow: 0 0 6px rgba(255,0,110,0.4);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.78rem;
  color: var(--c-text-dim);
  font-family: var(--font-mono);
}

.footer-tag {
  color: var(--c-red);
  opacity: 0.7;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

/* ── h2 + .subtitle 装饰 ── */
h2 + .subtitle,
h2 + p.subtitle,
h2 + p.subhead,
h2 + p.desc,
h2 + p.lead {
  font-size: 0.95rem;
  color: var(--c-text-dim);
  margin-top: 0.4rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* ── Scroll Reveal 动画 ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── 卡片通用（如正文内有 .card） ── */
.page-content .card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
  transition: box-shadow 0.25s, transform 0.2s;
}

.page-content .card:hover {
  box-shadow: 0 8px 32px rgba(255,0,110,0.2);
  transform: translateY(-3px);
}

/* ── 滚动 div 偏移（含 hero） ── */
div[id] {
  scroll-margin-top: calc(var(--nav-h) + 10px);
}

/* ── 移动端 ── */
@media (max-width: 767px) {
  :root { --nav-h: 110px; }

  .hdr-brand-row { padding: 0 1rem; }
  .hdr-nav-row { padding: 0 0.5rem; }

  .main-nav ul {
    gap: 0;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .main-nav ul::-webkit-scrollbar { display: none; }

  .main-nav ul li a {
    padding: 0.7rem 0.75rem;
    font-size: 0.75rem;
    min-height: 44px;
  }

  .hero-content {
    padding: 2rem 1.25rem;
    text-align: left;
    max-width: 100%;
  }

  .hero-sub { margin-left: 0; }

  .wrap { padding: 0 1rem; }

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

  .footer-cols { flex-direction: column; align-items: flex-start; }

  .footer-dl { max-width: 100%; }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .site-footer { padding: 2rem 1rem 1.25rem; }
}

@media (max-width: 400px) {
  .hero-h1 { font-size: 1.6rem; }
  .brand-name { font-size: 1rem; }
}

/* ── 无动效偏好 ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}