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

/* ===== 变量 ===== */
:root {
  --c-primary: #6514ff;
  --c-accent: #bf00ff;
  --c-dark: #1c1726;
  --c-dark-80: rgba(28,23,38,0.8);
  --c-dark-60: rgba(28,23,38,0.6);
  --c-light: #f4f0ff;
  --c-light-2: #ede7ff;
  --c-white: #ffffff;
  --c-neon: #d966ff;
  --c-surface: #231d35;
  --c-surface-2: #2e2648;
  --font-main: 'Nunito Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-display: 'Varela Round', 'Nunito Sans', sans-serif;
  --nav-h: 64px;
  --radius-card: 18px;
  --radius-sm: 8px;
  --gap-lg: 56px;
  --gap-md: 32px;
  --gap-sm: 16px;
  --transition: 220ms ease;
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-size: 17px;
  background: var(--c-dark);
  color: var(--c-light);
}
body {
  font-family: var(--font-main);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--c-dark);
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }

/* ===== 滚动边距（吸顶导航补偿） ===== */
section[id] { scroll-margin-top: calc(var(--nav-h) + 12px); }

/* ===== 外包装 ===== */
.site-wrap {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-bottom: calc(var(--nav-h) + 8px);
}

/* ===== HERO ===== */
.hero-block {
  position: relative;
  min-height: 45vh;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: var(--gap-lg) var(--gap-md) var(--gap-md);
  background: var(--c-dark);
  overflow: hidden;
  border-bottom: 3px solid var(--c-primary);
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 680px;
  text-align: right;
}
.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 12px;
  background: rgba(191,0,255,0.12);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
}
.hero-h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-white);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.hero-sub {
  font-size: 1rem;
  color: rgba(244,240,255,0.72);
  margin-bottom: 28px;
  line-height: 1.7;
}
.hero-cta {
  display: inline-block;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: var(--c-white);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 36px;
  border-radius: 50px;
  letter-spacing: 0.04em;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 24px rgba(101,20,255,0.45);
  min-height: 48px;
  line-height: 1.4;
}
.hero-cta:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 32px rgba(191,0,255,0.55);
}

/* 几何装饰 */
.hero-geo {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.geo-circle {
  position: absolute;
  border-radius: 50%;
  animation: geoFloat 6s ease-in-out infinite;
}
.geo-c1 {
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(101,20,255,0.25) 0%, transparent 70%);
  top: -80px; left: -60px;
  animation-delay: 0s;
}
.geo-c2 {
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(191,0,255,0.2) 0%, transparent 70%);
  bottom: 20px; left: 30%;
  animation-delay: -3s;
}
.geo-strip {
  position: absolute;
  border-radius: 3px;
  animation: geoSlide 8s ease-in-out infinite;
}
.geo-s1 {
  width: 3px; height: 120px;
  background: linear-gradient(to bottom, var(--c-primary), transparent);
  top: 20%; left: 20%;
  animation-delay: -1s;
}
.geo-s2 {
  width: 3px; height: 80px;
  background: linear-gradient(to bottom, var(--c-accent), transparent);
  top: 40%; left: 55%;
  animation-delay: -4s;
}
@keyframes geoFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-18px) scale(1.04); }
}
@keyframes geoSlide {
  0%, 100% { opacity: 0.6; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.3); }
}

/* ===== MAIN CONTENT ===== */
.main-content {
  flex: 1;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: var(--gap-lg) var(--gap-md);
  display: flex;
  flex-direction: column;
  gap: var(--gap-lg);
}

/* ===== 内容区 + aside 布局 ===== */
.content-section {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--gap-lg);
  align-items: start;
}
.content-body {
  min-width: 0;
}

/* ===== page.content 内部样式 ===== */
.content-body h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  color: var(--c-white);
  margin-top: var(--gap-lg);
  margin-bottom: 10px;
  line-height: 1.25;
}
.content-body h2:first-child { margin-top: 0; }
.content-body h2 + hr,
.content-body h3 + hr {
  border: none;
  border-top: 2px solid var(--c-primary);
  margin-bottom: 20px;
  opacity: 0.6;
}
.content-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-neon);
  margin-top: 28px;
  margin-bottom: 8px;
}
.content-body p {
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(244,240,255,0.85);
  margin-bottom: 16px;
}
.content-body ul, .content-body ol {
  padding-left: 1.5em;
  margin-bottom: 16px;
  color: rgba(244,240,255,0.82);
}
.content-body ul { list-style: disc; }
.content-body ol { list-style: decimal; }
.content-body li { margin-bottom: 6px; line-height: 1.65; }
.content-body a {
  color: var(--c-neon);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
.content-body a:hover { color: var(--c-accent); }
.content-body strong { color: var(--c-white); font-weight: 700; }

/* section 内部 figure/aside 交错 */
.content-body section {
  position: relative;
  padding: 28px 0;
  border-bottom: 1px solid rgba(101,20,255,0.18);
}
.content-body section:last-child { border-bottom: none; }

/* ===== aside 右侧 ===== */
.content-aside {
  position: sticky;
  top: calc(var(--nav-h) + 20px);
  background: var(--c-surface);
  border-radius: var(--radius-card);
  border-bottom: 4px solid var(--c-primary);
  padding: 24px 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.aside-sticky { display: flex; flex-direction: column; gap: 12px; }
.aside-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 2px;
}
.aside-hr {
  border: none;
  border-top: 2px solid var(--c-accent);
  opacity: 0.5;
  margin-bottom: 4px;
}
.aside-nav-list { display: flex; flex-direction: column; gap: 4px; }
.aside-link {
  display: block;
  font-size: 0.88rem;
  color: rgba(244,240,255,0.75);
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  min-height: 36px;
  line-height: 1.5;
}
.aside-link:hover {
  background: rgba(101,20,255,0.25);
  color: var(--c-white);
}
.aside-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--c-accent);
  margin-top: 8px;
}
.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-accent);
  animation: pulseDot 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

/* ===== 亮点区块 ===== */
.highlight-section {
  width: 100%;
}
.highlight-figure {
  background: var(--c-surface);
  border-radius: var(--radius-card);
  padding: var(--gap-md);
  border-bottom: 4px solid var(--c-accent);
}
.figure-block {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap-sm);
  margin-bottom: 16px;
}
.fig-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 12px;
  border-radius: var(--radius-card);
  background: var(--c-surface-2);
  border-bottom: 3px solid transparent;
  transition: transform var(--transition), border-color var(--transition);
}
.fig-item:hover { transform: translateY(-4px); }
.fig-item--1 { border-color: var(--c-primary); }
.fig-item--2 { border-color: var(--c-accent); }
.fig-item--3 { border-color: #00d4ff; }
.fig-item--4 { border-color: #ff6b6b; }
.fig-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--c-neon);
  line-height: 1;
}
.fig-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(244,240,255,0.8);
  text-align: center;
}
.fig-caption {
  text-align: center;
  font-size: 0.85rem;
  color: rgba(244,240,255,0.5);
  letter-spacing: 0.06em;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--c-surface);
  border-top: 3px solid var(--c-primary);
  margin-bottom: 0;
}
.footer-cta-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px var(--gap-md);
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-accent) 100%);
}
.footer-cta-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-white);
  letter-spacing: 0.02em;
}
.footer-cta-btn {
  display: inline-block;
  background: var(--c-white);
  color: var(--c-primary);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: 50px;
  min-height: 44px;
  line-height: 1.4;
  transition: transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.footer-cta-btn:hover {
  transform: scale(1.04);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px var(--gap-md);
  flex-wrap: wrap;
}
.footer-address {
  display: flex;
  align-items: center;
  gap: 12px;
  font-style: normal;
  font-size: 0.85rem;
  color: rgba(244,240,255,0.6);
  flex-wrap: wrap;
}
.footer-brand {
  font-weight: 700;
  color: var(--c-light);
  font-size: 0.95rem;
}
.footer-domain { opacity: 0.7; }
.footer-links {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}
.footer-links li a {
  display: block;
  font-size: 0.82rem;
  color: rgba(244,240,255,0.55);
  padding: 6px 12px;
  min-height: 40px;
  line-height: 28px;
  transition: color var(--transition);
}
.footer-links li a:hover { color: var(--c-neon); }

/* ===== 底部固定导航条 ===== */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--c-dark-80);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 2px solid rgba(101,20,255,0.4);
  height: var(--nav-h);
  box-shadow: 0 -4px 24px rgba(0,0,0,0.5);
}
.bottom-nav-inner {
  max-width: 1240px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 var(--gap-md);
}
.bottom-nav-brand {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  min-height: 44px;
}
.bottom-nav-logo-text {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-white);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.nav-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}
.bottom-nav-list {
  display: flex;
  align-items: center;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
  gap: 2px;
  -ms-overflow-style: none;
}
.bottom-nav-list::-webkit-scrollbar { display: none; }
.bottom-nav-list li {
  flex-shrink: 0;
}
.bottom-nav-list li a {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(244,240,255,0.7);
  padding: 10px 12px;
  border-radius: 8px;
  min-height: 44px;
  line-height: 24px;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}
.bottom-nav-list li a:hover {
  background: rgba(101,20,255,0.3);
  color: var(--c-white);
}
.bottom-nav-cta {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: var(--c-white);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 10px 22px;
  border-radius: 50px;
  min-height: 44px;
  letter-spacing: 0.04em;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 16px rgba(101,20,255,0.5);
  white-space: nowrap;
}
.bottom-nav-cta:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 24px rgba(191,0,255,0.6);
}

/* ===== 滚动揭示动效 ===== */
.scroll-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.scroll-reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ===== 断点：平板 ===== */
@media (max-width: 900px) {
  .content-section {
    grid-template-columns: 1fr;
  }
  .content-aside {
    position: static;
    top: auto;
  }
  .figure-block {
    grid-template-columns: repeat(2, 1fr);
  }
  .bottom-nav-list li a {
    font-size: 0.78rem;
    padding: 10px 8px;
  }
}

/* ===== 断点：移动端 ===== */
@media (max-width: 600px) {
  :root { --gap-lg: 36px; --gap-md: 16px; }
  .hero-block {
    min-height: 45vh;
    padding: 48px 16px 24px;
    align-items: flex-end;
    justify-content: flex-start;
  }
  .hero-inner { text-align: left; max-width: 100%; }
  .hero-eyebrow { font-size: 0.72rem; }
  .hero-h1 { font-size: clamp(1.8rem, 8vw, 2.8rem); }
  .main-content { padding: var(--gap-lg) 16px; }
  .footer-cta-block {
    flex-direction: column;
    text-align: center;
    padding: 24px 16px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
    gap: 12px;
  }
  .footer-links { gap: 0; }
  .figure-block { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .bottom-nav-inner { padding: 0 12px; gap: 8px; }
  .bottom-nav-logo-text { font-size: 0.85rem; }
  .bottom-nav-list li a { font-size: 0.72rem; padding: 10px 6px; }
  .bottom-nav-cta { padding: 10px 14px; font-size: 0.8rem; }
}

/* ===== prefers-reduced-motion ===== */
@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; }
}