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

/* ===== CSS 变量 ===== */
:root {
  --c-primary: #ff0000;
  --c-secondary: #ff006e;
  --c-dark: #1a1a2e;
  --c-darker: #0d0d1a;
  --c-surface: #12122a;
  --c-surface2: #1e1e3a;
  --c-text: #e8e8f0;
  --c-text-muted: #9090b8;
  --c-accent: #00ffff;
  --c-accent2: #ff9f1c;
  --glow-red: 0 0 8px #ff0000, 0 0 20px #ff000080, 0 0 40px #ff000040;
  --glow-pink: 0 0 8px #ff006e, 0 0 20px #ff006e80, 0 0 40px #ff006e40;
  --glow-cyan: 0 0 8px #00ffff, 0 0 20px #00ffff80;
  --font-display: 'Syne', 'Manrope', system-ui, sans-serif;
  --font-body: 'Manrope', system-ui, sans-serif;
  --aside-width: 240px;
  --header-height: 110px;
  --radius-card: 28px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  font-size: 16px;
}

body.retro-body {
  background-color: var(--c-darker);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  max-width: 100vw;
}

/* ===== CRT 扫描线纹理 ===== */
.crt-overlay {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 2px,
    rgba(0,0,0,0.18) 2px,
    rgba(0,0,0,0.18) 4px
  );
  mix-blend-mode: multiply;
}

.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: linear-gradient(
    rgba(255,0,110,0.03) 50%,
    transparent 50%
  );
  background-size: 100% 4px;
  animation: scanmove 8s linear infinite;
}

@keyframes scanmove {
  0% { background-position: 0 0; }
  100% { background-position: 0 100vh; }
}

/* ===== 页面整体布局 ===== */
.page-wrapper {
  margin-left: var(--aside-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

/* ===== 侧边栏 aside ===== */
.site-aside {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--aside-width);
  height: 100vh;
  background: linear-gradient(180deg, var(--c-darker) 0%, var(--c-surface) 100%);
  border-right: 1px solid #ff006e40;
  display: flex;
  flex-direction: column;
  gap: 0;
  z-index: 200;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 24px 0 16px;
}

.site-aside::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, #ff006e, #ff0000, transparent);
  box-shadow: var(--glow-pink);
}

.aside-nav {
  flex: 1;
}

.aside-nav-list,
.aside-quick-list {
  list-style: none;
}

.aside-nav-list li a,
.aside-quick-list li a {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: var(--c-text-muted);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-left: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  min-height: 44px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.aside-nav-list li a:hover,
.aside-quick-list li a:hover {
  color: var(--c-primary);
  border-left-color: var(--c-primary);
  background: rgba(255,0,0,0.06);
  text-shadow: var(--glow-red);
}

.aside-cta {
  padding: 16px 16px;
}

.btn-cta-main {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 12px 8px;
  border-radius: 8px;
  box-shadow: var(--glow-red);
  transition: box-shadow var(--transition), transform var(--transition);
  min-height: 44px;
}

.btn-cta-main:hover {
  box-shadow: var(--glow-pink);
  transform: translateY(-2px);
}

.aside-label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-secondary);
  padding: 12px 20px 4px;
  font-family: var(--font-display);
  font-weight: 700;
}

.aside-quicklinks {
  margin-top: 8px;
  border-top: 1px solid #ff006e20;
}

.aside-quick-list li a {
  font-size: 0.75rem;
  padding: 8px 20px;
  min-height: 40px;
}

/* ===== 顶部 Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,13,26,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #ff006e30;
  overflow: hidden;
}

.header-brand-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 32px;
  border-bottom: 1px solid #ffffff08;
}

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

.brand-logo-img,
.brand-mark-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.brand-text-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-primary);
  text-shadow: var(--glow-red);
  letter-spacing: 0.04em;
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--c-text-muted);
  letter-spacing: 0.08em;
  margin-left: auto;
  font-family: var(--font-display);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-nav-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 32px;
  overflow: hidden;
}

.top-nav {
  flex: 1;
  overflow: hidden;
  min-width: 0;
}

.top-nav-list {
  list-style: none;
  display: flex;
  gap: 2px;
  flex-wrap: nowrap;
  overflow: hidden;
}

.top-nav-list li {
  position: relative;
  flex-shrink: 1;
  min-width: 0;
}

.top-nav-list li a.nav-link {
  display: flex;
  align-items: center;
  padding: 10px 10px;
  color: var(--c-text-muted);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  min-height: 44px;
  white-space: nowrap;
}

.top-nav-list li a.nav-link:hover {
  color: var(--c-primary);
  border-bottom-color: var(--c-primary);
  text-shadow: var(--glow-red);
}

.btn-header-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  background: transparent;
  border: 1.5px solid var(--c-secondary);
  color: var(--c-secondary);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 6px;
  box-shadow: var(--glow-pink);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  min-height: 44px;
  flex-shrink: 0;
}

.btn-header-cta:hover {
  background: var(--c-secondary);
  color: #fff;
  box-shadow: var(--glow-pink), inset 0 0 12px rgba(255,0,110,0.3);
}

/* ===== Hero ===== */
.hero-section {
  display: flex;
  min-height: 70vh;
  position: relative;
  overflow: hidden;
  background: var(--c-dark);
}

.hero-media {
  flex: 0 0 52%;
  position: relative;
  overflow: hidden;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-placeholder {
  width: 100%;
  height: 100%;
  min-height: 70vh;
  background: linear-gradient(135deg, var(--c-darker) 0%, var(--c-surface) 100%);
  position: relative;
  overflow: hidden;
}

.hero-geo-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,0,110,0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,0,110,0.15) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridfade 4s ease-in-out infinite alternate;
}

@keyframes gridfade {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

.hero-neon-circle {
  position: absolute;
  width: 320px;
  height: 320px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 2px solid var(--c-primary);
  box-shadow: var(--glow-red), inset 0 0 60px rgba(255,0,0,0.1);
  animation: pulse-ring 3s ease-in-out infinite;
}

@keyframes pulse-ring {
  0%, 100% { transform: translate(-50%,-50%) scale(1); opacity: 1; }
  50% { transform: translate(-50%,-50%) scale(1.08); opacity: 0.7; }
}

.hero-slash {
  position: absolute;
  top: 0;
  right: -40px;
  width: 100px;
  height: 100%;
  background: linear-gradient(100deg, transparent 0%, var(--c-dark) 60%);
  clip-path: polygon(40% 0, 100% 0, 100% 100%, 0% 100%);
  z-index: 2;
}

.hero-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  text-align: right;
  padding: 48px 40px 48px 56px;
  position: relative;
  z-index: 3;
  min-width: 0;
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-secondary);
  text-shadow: var(--glow-pink);
  margin-bottom: 12px;
}

.hero-h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-text);
  margin-bottom: 20px;
  position: relative;
  word-break: break-word;
}

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

.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.glitch-text::before {
  color: var(--c-primary);
  animation: glitch-before 3.5s infinite linear;
  clip-path: polygon(0 0, 100% 0, 100% 40%, 0 40%);
  z-index: -1;
}

.glitch-text::after {
  color: var(--c-accent);
  animation: glitch-after 3.5s infinite linear;
  clip-path: polygon(0 60%, 100% 60%, 100% 100%, 0 100%);
  z-index: -1;
}

@keyframes glitch-before {
  0%, 90%, 100% { transform: translate(0,0); opacity: 0; }
  92% { transform: translate(-3px, 1px); opacity: 0.7; }
  94% { transform: translate(3px, -1px); opacity: 0.7; }
  96% { transform: translate(-2px, 2px); opacity: 0.7; }
  98% { transform: translate(0,0); opacity: 0; }
}

@keyframes glitch-after {
  0%, 88%, 100% { transform: translate(0,0); opacity: 0; }
  90% { transform: translate(3px, -2px); opacity: 0.6; }
  93% { transform: translate(-3px, 2px); opacity: 0.6; }
  95% { transform: translate(2px, -1px); opacity: 0.6; }
  97% { transform: translate(0,0); opacity: 0; }
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--c-text-muted);
  max-width: 360px;
  margin-bottom: 28px;
  line-height: 1.75;
  word-break: break-word;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 8px;
  box-shadow: var(--glow-red);
  transition: transform var(--transition), box-shadow var(--transition);
  min-height: 44px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--glow-pink);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  background: transparent;
  border: 1.5px solid rgba(255,0,110,0.6);
  color: var(--c-secondary);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  min-height: 44px;
}

.btn-secondary:hover {
  background: rgba(255,0,110,0.12);
  box-shadow: var(--glow-pink);
  color: #fff;
}

/* ===== 主内容区 ===== */
.site-main {
  flex: 1;
  padding: 0;
  overflow-x: hidden;
}

.main-article {
  width: 100%;
}

.content-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 56px 40px;
}

/* ===== 正文内样式 ===== */
.content-section h2,
.content-section h3,
.content-section h4 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.3;
  word-break: break-word;
}

.content-section h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.9rem);
  color: var(--c-primary);
  text-shadow: var(--glow-red);
  margin: 48px 0 8px;
}

.content-section h3 {
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  color: var(--c-secondary);
  text-shadow: 0 0 8px rgba(255,0,110,0.5);
  margin: 36px 0 8px;
}

.content-section h4 {
  font-size: 1rem;
  color: var(--c-accent);
  margin: 28px 0 6px;
}

.content-section hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), transparent);
  margin: 12px 0 24px;
  box-shadow: 0 0 6px rgba(255,0,0,0.4);
}

.content-section p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text);
  margin-bottom: 18px;
  word-break: break-word;
}

.content-section ul,
.content-section ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.content-section li {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 8px;
  word-break: break-word;
}

.content-section a {
  color: var(--c-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition), text-shadow var(--transition);
  word-break: break-word;
}

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

.content-section section {
  padding: 48px 0;
  border-bottom: 1px solid rgba(255,0,110,0.12);
  position: relative;
  scroll-margin-top: calc(var(--header-height) + 20px);
  overflow: hidden;
}

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

/* 玻璃拟态卡片（正文内） */
.content-section .card,
.content-section [class*="card"] {
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,0,110,0.2);
  border-radius: var(--radius-card);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.content-section .card:hover {
  border-color: rgba(255,0,0,0.5);
  box-shadow: var(--glow-red), 0 8px 32px rgba(0,0,0,0.5);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--c-darker);
  border-top: 1px solid rgba(255,0,110,0.2);
  padding: 28px 40px;
  text-align: center;
  overflow: hidden;
}

.site-footer p {
  margin-bottom: 6px;
  font-size: 0.85rem;
}

.site-footer small {
  color: var(--c-text-muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.footer-brand {
  color: var(--c-primary);
  text-shadow: var(--glow-red);
  font-weight: 700;
  font-family: var(--font-display);
}

.site-footer p:last-child small {
  color: rgba(144,144,184,0.7);
  font-size: 0.72rem;
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 各 section 背景交替 ===== */
.content-section section:nth-child(even) {
  background: rgba(255,0,110,0.02);
  border-radius: 16px;
  padding-left: 20px;
  padding-right: 20px;
}

/* ===== 响应式：平板 ===== */
@media (max-width: 1024px) {
  :root {
    --aside-width: 200px;
  }

  .header-brand-row { padding: 10px 20px; }
  .header-nav-row { padding: 0 20px; }
  .content-section { padding: 40px 24px; }
  .hero-text { padding: 32px 24px 32px 40px; }
}

/* ===== 响应式：移动端 ===== */
@media (max-width: 768px) {
  :root {
    --aside-width: 0px;
    --header-height: 112px;
  }

  body.retro-body {
    overflow-x: hidden;
  }

  .site-aside {
    position: fixed;
    left: -280px;
    width: 260px;
    transition: left var(--transition);
    z-index: 500;
  }

  .site-aside.open {
    left: 0;
    box-shadow: 4px 0 32px rgba(0,0,0,0.8);
  }

  .page-wrapper {
    margin-left: 0;
    width: 100%;
    overflow-x: hidden;
  }

  .header-brand-row {
    padding: 10px 16px;
    gap: 10px;
  }

  .brand-tagline {
    display: none;
  }

  .header-nav-row {
    padding: 0 16px;
    gap: 8px;
  }

  .top-nav {
    display: none;
  }

  .btn-header-cta {
    font-size: 0.7rem;
    padding: 10px 12px;
    letter-spacing: 0.04em;
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1px solid rgba(255,0,110,0.5);
    color: var(--c-secondary);
    font-size: 1.1rem;
    width: 44px;
    height: 44px;
    border-radius: 6px;
    cursor: pointer;
    flex-shrink: 0;
  }

  .hero-section {
    flex-direction: column;
    min-height: auto;
    overflow: hidden;
  }

  .hero-media {
    flex: none;
    width: 100%;
    height: 220px;
    order: -1;
    overflow: hidden;
  }

  .hero-placeholder {
    min-height: 220px;
  }

  .hero-neon-circle {
    width: 160px;
    height: 160px;
  }

  .hero-slash {
    display: none;
  }

  .hero-text {
    text-align: left;
    align-items: flex-start;
    padding: 24px 16px;
    width: 100%;
    overflow: hidden;
  }

  .hero-desc {
    text-align: left;
    max-width: 100%;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .btn-primary,
  .btn-secondary {
    font-size: 0.8rem;
    padding: 12px 18px;
  }

  .content-section {
    padding: 28px 16px;
  }

  .content-section section:nth-child(even) {
    padding-left: 12px;
    padding-right: 12px;
    border-radius: 8px;
  }

  .site-footer {
    padding: 20px 16px;
  }

  .site-aside.open ~ .page-wrapper::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 499;
  }
}

/* ===== 移动端菜单按钮（默认隐藏） ===== */
.mobile-menu-btn {
  display: none;
}

/* ===== prefers-reduced-motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .scanlines { display: none; }
  .crt-overlay { display: none; }
  .reveal { opacity: 1; transform: none; }
}

/* ===== 无障碍：焦点 ===== */
:focus-visible {
  outline: 2px solid var(--c-secondary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== 选中颜色 ===== */
::selection {
  background: var(--c-primary);
  color: #fff;
}