@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,700;1,400&family=Nunito:ital,wght@0,700;0,800;0,900;1,700&display=swap');

/* ==========================================
   CSS 变量 & 基础重置
   ========================================== */
:root {
  --c-primary: #FF6B9D;
  --c-secondary: #2D1B69;
  --c-soft: #FFE4F0;
  --c-primary-dark: #e8457a;
  --c-secondary-light: #4a3191;
  --c-soft-dark: #f5c0d8;
  --c-text: #1a1133;
  --c-text-muted: #6b5b8a;
  --c-bg: #fff9fc;
  --c-card-bg: #ffffff;
  --c-white: #ffffff;
  --c-border: rgba(255, 107, 157, 0.18);
  --shadow-clay: 0 8px 32px rgba(255, 107, 157, 0.18), 0 2px 8px rgba(45, 27, 105, 0.10);
  --shadow-hover: 0 16px 48px rgba(255, 107, 157, 0.28), 0 4px 16px rgba(45, 27, 105, 0.16);
  --radius-card: 20px;
  --radius-btn: 50px;
  --radius-sm: 10px;
  --font-display: 'Nunito', 'DM Sans', system-ui, sans-serif;
  --font-body: 'DM Sans', 'Nunito', system-ui, sans-serif;
  --nav-h: 68px;
  --anchor-h: 44px;
  --scroll-offset: 112px;
  --transition-std: 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 0.18s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 17px;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--c-bg);
  color: var(--c-text);
  overflow-x: hidden;
}

body.home-page {
  background: var(--c-bg);
}

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

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--c-primary-dark);
}

ul, ol {
  list-style: none;
}

/* ==========================================
   页面包装
   ========================================== */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================
   顶部主导航
   ========================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 900;
  background: rgba(45, 27, 105, 0.92);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid rgba(255, 107, 157, 0.2);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-right {
  justify-content: flex-end;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 12px;
  border-radius: var(--radius-btn);
  color: rgba(255, 228, 240, 0.85);
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  min-height: 40px;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-link:hover {
  background: rgba(255, 107, 157, 0.18);
  color: var(--c-primary);
}

.nav-icon {
  font-size: 0.75rem;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.nav-link:hover .nav-icon {
  opacity: 1;
}

.brand-center {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  min-height: 40px;
}

.brand-logo {
  height: 40px;
  width: auto;
}

.brand-text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--c-white);
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, var(--c-primary), #ffb3d1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 20px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--c-primary), #ff9dbf);
  color: var(--c-white) !important;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 800;
  min-height: 40px;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(255, 107, 157, 0.4);
  transition: transform var(--transition-std), box-shadow var(--transition-std);
}

.nav-cta:hover {
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 8px 28px rgba(255, 107, 157, 0.5);
  color: var(--c-white) !important;
}

/* ==========================================
   粘性锚点条
   ========================================== */
.anchor-bar {
  position: sticky;
  top: var(--nav-h);
  z-index: 800;
  background: rgba(255, 228, 240, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  height: var(--anchor-h);
  overflow: hidden;
}

.anchor-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.anchor-bar-inner::-webkit-scrollbar {
  display: none;
}

.anchor-link {
  padding: 6px 14px;
  border-radius: var(--radius-btn);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--c-secondary);
  white-space: nowrap;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.anchor-link:hover {
  background: var(--c-primary);
  color: var(--c-white);
}

/* ==========================================
   Hero 区域
   ========================================== */
.hero-wrap {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 560px;
  display: flex;
  align-items: flex-end;
  padding-top: calc(var(--nav-h) + var(--anchor-h));
  overflow: hidden;
}

.hero-parallax-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  will-change: transform;
  background: linear-gradient(160deg, var(--c-secondary) 0%, #1a0d40 40%, #3d1566 70%, #2D1B69 100%);
}

.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
  will-change: transform;
}

.hero-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(45, 27, 105, 0.85) 0%,
    rgba(45, 27, 105, 0.6) 50%,
    rgba(45, 27, 105, 0.3) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 680px;
  padding: 0 48px 80px;
  animation: heroFadeIn 1s ease both;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--c-white);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255, 228, 240, 0.85);
  margin-bottom: 36px;
  max-width: 520px;
  line-height: 1.7;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 36px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--c-primary), #ff9dbf);
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  min-height: 50px;
  box-shadow: 0 8px 32px rgba(255, 107, 157, 0.45);
  transition: transform var(--transition-std), box-shadow var(--transition-std);
}

.hero-btn:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 16px 48px rgba(255, 107, 157, 0.55);
  color: var(--c-white);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-primary);
  animation: scrollBounce 1.8s ease-in-out infinite;
  box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.25);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(10px); opacity: 0.5; }
}

/* ==========================================
   正文主容器
   ========================================== */
.site-main {
  flex: 1;
  padding: 64px 0 80px;
}

.content-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.content-with-aside {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

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

/* ==========================================
   page.content 内部样式
   ========================================== */
.content-primary article {
  margin-bottom: 72px;
  scroll-margin-top: var(--scroll-offset);
  position: relative;
}

.content-primary article:last-child {
  margin-bottom: 0;
}

.content-primary h2 {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 900;
  color: var(--c-secondary);
  margin-bottom: 20px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.content-primary small {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-primary);
  background: var(--c-soft);
  padding: 4px 12px;
  border-radius: var(--radius-btn);
  margin-bottom: 8px;
}

.content-primary h3 {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--c-secondary);
  margin-top: 28px;
  margin-bottom: 12px;
}

.content-primary p {
  font-size: 1rem;
  line-height: 1.75;
  color: #2e2248;
  margin-bottom: 16px;
}

.content-primary ul,
.content-primary ol {
  padding-left: 0;
  margin-bottom: 20px;
}

.content-primary ul li,
.content-primary ol li {
  padding: 6px 0 6px 22px;
  position: relative;
  font-size: 1rem;
  line-height: 1.65;
  color: #2e2248;
}

.content-primary ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-primary);
}

.content-primary ol {
  counter-reset: ol-counter;
  list-style: none;
}

.content-primary ol li {
  counter-increment: ol-counter;
}

.content-primary ol li::before {
  content: counter(ol-counter);
  position: absolute;
  left: 0;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-secondary);
  color: var(--c-white);
  font-size: 0.65rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.content-primary figure {
  margin: 32px 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-clay);
}

.content-primary figcaption {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  padding: 10px 16px;
  text-align: center;
  background: var(--c-soft);
  font-style: italic;
}

.content-primary aside {
  background: linear-gradient(135deg, var(--c-soft) 0%, #fff0f8 100%);
  border-left: 4px solid var(--c-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 0.95rem;
  color: var(--c-secondary);
}

.content-primary a {
  color: var(--c-primary);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(255, 107, 157, 0.35);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--transition-fast), color var(--transition-fast);
}

.content-primary a:hover {
  color: var(--c-primary-dark);
  text-decoration-color: var(--c-primary-dark);
}

.content-primary blockquote {
  border-left: 4px solid var(--c-primary);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--c-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 1.05rem;
  font-style: italic;
  color: var(--c-secondary);
}

.content-primary table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.92rem;
}

.content-primary th {
  background: var(--c-secondary);
  color: var(--c-white);
  padding: 10px 14px;
  text-align: left;
  font-family: var(--font-display);
  font-weight: 700;
}

.content-primary td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--c-border);
  color: #2e2248;
}

.content-primary tr:nth-child(even) td {
  background: rgba(255, 228, 240, 0.4);
}

/* article 带交替样式 */
.content-primary article:nth-child(even) {
  background: linear-gradient(135deg, rgba(255, 228, 240, 0.3) 0%, rgba(255, 255, 255, 0) 60%);
  padding: 32px;
  border-radius: var(--radius-card);
  margin-left: -32px;
  margin-right: -32px;
}

/* ==========================================
   侧边栏 Aside
   ========================================== */
.content-aside {
  position: sticky;
  top: var(--scroll-offset);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.aside-card {
  background: var(--c-card-bg);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-clay);
  border: 1px solid var(--c-border);
}

.aside-eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-primary);
  background: var(--c-soft);
  padding: 3px 10px;
  border-radius: var(--radius-btn);
  margin-bottom: 10px;
}

.aside-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 900;
  color: var(--c-secondary);
  margin-bottom: 18px;
}

.aside-nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.aside-nav-link {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-secondary);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  min-height: 40px;
  display: flex;
  align-items: center;
}

.aside-nav-link:hover {
  background: var(--c-soft);
  color: var(--c-primary);
  transform: translateX(4px);
}

.aside-figure {
  background: linear-gradient(160deg, var(--c-secondary) 0%, var(--c-secondary-light) 100%);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.aside-deco-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.18;
}

.shape-a {
  width: 120px;
  height: 120px;
  background: var(--c-primary);
  top: -30px;
  right: -30px;
}

.shape-b {
  width: 80px;
  height: 80px;
  background: #ffb3d1;
  bottom: 20px;
  left: -20px;
}

.aside-fig-caption {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: rgba(255, 228, 240, 0.9);
  position: relative;
  z-index: 1;
  text-align: center;
}

/* ==========================================
   页脚
   ========================================== */
.site-footer {
  background: var(--c-secondary);
  color: var(--c-soft);
}

.footer-cta-block {
  background: linear-gradient(135deg, var(--c-primary) 0%, #e8457a 100%);
  padding: 64px 24px;
}

.footer-cta-inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.footer-eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.75);
  background: rgba(255, 255, 255, 0.15);
  padding: 4px 14px;
  border-radius: var(--radius-btn);
  margin-bottom: 16px;
}

.footer-cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  color: var(--c-white);
  margin-bottom: 28px;
  line-height: 1.25;
}

.footer-cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 40px;
  border-radius: var(--radius-btn);
  background: var(--c-white);
  color: var(--c-primary) !important;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 900;
  min-height: 50px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  transition: transform var(--transition-std), box-shadow var(--transition-std);
}

.footer-cta-btn:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 16px 40px rgba(0,0,0,0.2);
}

.footer-body {
  max-width: 1280px;
  margin: 0 auto;
  padding: 56px 24px 40px;
}

.footer-nav-wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-dl {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-dl-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 900;
  color: var(--c-white);
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 107, 157, 0.25);
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}

.footer-dl dd {
  font-size: 0.88rem;
}

.footer-dl dd a {
  color: rgba(255, 228, 240, 0.72);
  font-weight: 500;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 4px 0;
}

.footer-dl dd a:hover {
  color: var(--c-primary);
  padding-left: 6px;
}

.footer-keyword,
.footer-topic {
  color: rgba(255, 228, 240, 0.45);
  font-size: 0.82rem;
  font-style: italic;
}

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 24px 32px;
  border-top: 1px solid rgba(255, 107, 157, 0.18);
  text-align: center;
}

.footer-copy {
  font-size: 0.85rem;
  color: rgba(255, 228, 240, 0.55);
  margin-bottom: 6px;
}

.footer-note {
  font-size: 0.78rem;
  color: rgba(255, 228, 240, 0.35);
}

/* ==========================================
   Scroll-driven / 视差 JS 辅助类
   ========================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.12s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.19s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.26s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.33s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.40s; }
.stagger.visible > *:nth-child(7) { transition-delay: 0.47s; }

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
  .hero-content { animation: none; }
  .scroll-dot { animation: none; }
}

/* ==========================================
   scroll-margin-top for in-page sections
   ========================================== */
article[id] {
  scroll-margin-top: var(--scroll-offset);
}

/* ==========================================
   响应式
   ========================================== */
@media (max-width: 1024px) {
  .content-with-aside {
    grid-template-columns: 1fr 280px;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-h: 58px;
    --scroll-offset: 102px;
  }

  .main-nav {
    gap: 8px;
  }

  .nav-left .nav-link:nth-child(n+3),
  .nav-right .nav-link:not(:last-child):nth-child(n+2) {
    display: none;
  }

  .nav-link {
    padding: 8px 8px;
    font-size: 0.75rem;
  }

  .hero-content {
    padding: 0 24px 72px;
  }

  .content-with-aside {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .content-aside {
    position: static;
    margin-top: 48px;
  }

  .content-primary article:nth-child(even) {
    padding: 20px;
    margin-left: -8px;
    margin-right: -8px;
  }

  .footer-nav-wrap {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .footer-dl:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  :root {
    --nav-h: 54px;
    --anchor-h: 40px;
    --scroll-offset: 94px;
  }

  .nav-left .nav-link:nth-child(n+2) {
    display: none;
  }

  .hero-h1 {
    font-size: 1.7rem;
  }

  .hero-sub {
    font-size: 0.95rem;
  }

  .hero-btn {
    padding: 12px 28px;
    font-size: 0.95rem;
  }

  .footer-nav-wrap {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-cta-block {
    padding: 48px 20px;
  }

  .site-main {
    padding: 40px 0 60px;
  }

  .content-section {
    padding: 0 16px;
  }
}

/* ==========================================
   品牌色辅助工具
   ========================================== */
.text-primary { color: var(--c-primary); }
.text-secondary { color: var(--c-secondary); }
.bg-soft { background: var(--c-soft); }

button[aria-expanded]{min-width:44px;min-height:44px}