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

/* ===== 变量 ===== */
:root {
  --c-primary: #eb879c;
  --c-secondary: #ffb6c1;
  --c-dark: #26171a;
  --c-dark-80: rgba(38,23,26,0.8);
  --c-dark-60: rgba(38,23,26,0.6);
  --c-dark-20: rgba(38,23,26,0.12);
  --c-white: #fff;
  --c-surface: #fff5f7;
  --c-surface-2: #fce8ed;
  --c-text: #26171a;
  --c-text-muted: #6b3d47;
  --c-border: rgba(235,135,156,0.22);

  --shadow-sm: 0 2px 6px rgba(235,135,156,0.10), 0 1px 3px rgba(38,23,26,0.06);
  --shadow-md: 0 4px 16px rgba(235,135,156,0.16), 0 2px 6px rgba(38,23,26,0.08);
  --shadow-lg: 0 8px 32px rgba(235,135,156,0.22), 0 4px 12px rgba(38,23,26,0.10);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  --font-serif: 'Bodoni Moda', 'Georgia', serif;
  --font-sans: 'Jost', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  --nav-height: 48px;
  --header-h: 110px;
  --scroll-offset: 120px;

  --transition: 200ms ease;
  --transition-slow: 300ms ease;
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--scroll-offset);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-surface);
  min-height: 100vh;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-dark); }
a:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 3px; border-radius: 4px; }
ul, menu { list-style: none; }
button { cursor: pointer; font-family: var(--font-sans); border: none; }

/* ===== 屏幕阅读器专用 ===== */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ===== 全局包裹 ===== */
.site-wrapper { display: flex; flex-direction: column; min-height: 100vh; }

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-dark);
  box-shadow: 0 2px 12px rgba(38,23,26,0.30);
}

/* 品牌行 */
.header-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 1.5rem;
  border-bottom: 1px solid rgba(235,135,156,0.18);
}
.brand-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  min-height: 44px;
  padding: 0.25rem 0;
}
.brand-logo { height: 32px; width: auto; border-radius: 6px; }
.brand-name {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--c-secondary);
  letter-spacing: 0.04em;
  line-height: 1.2;
}
.brand-tagline {
  font-size: 0.78rem;
  color: rgba(255,182,193,0.55);
  margin-left: auto;
  font-weight: 300;
  letter-spacing: 0.03em;
  display: none;
}

/* 菜单行 */
.header-nav-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.45rem 1.5rem;
}

/* details / summary 导航结构（契约要求） */
.nav-details {
  flex: 1;
}
.nav-details[open] > summary .nav-toggle-label { opacity: 0.7; }
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  list-style: none;
  padding: 0.5rem 0;
  color: var(--c-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  min-height: 44px;
}
.nav-toggle::-webkit-details-marker { display: none; }
.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 20px;
}
.nav-toggle-icon span {
  display: block;
  height: 2px;
  background: var(--c-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}
.nav-pill {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 500;
  color: rgba(255,182,193,0.85);
  background: rgba(235,135,156,0.10);
  border: 1px solid rgba(235,135,156,0.20);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.nav-pill:hover,
.nav-pill:focus-visible {
  background: var(--c-primary);
  color: var(--c-white);
  box-shadow: var(--shadow-sm);
  outline-color: var(--c-secondary);
}

/* 搜索框 */
.nav-search { display: flex; align-items: center; }
.search-form { display: flex; align-items: center; gap: 0; }
.search-input {
  height: 40px;
  padding: 0 0.75rem;
  border-radius: var(--radius-pill) 0 0 var(--radius-pill);
  border: 1px solid rgba(235,135,156,0.30);
  background: rgba(255,255,255,0.06);
  color: var(--c-secondary);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  outline: none;
  width: 140px;
  transition: border-color var(--transition), background var(--transition), width var(--transition-slow);
}
.search-input::placeholder { color: rgba(255,182,193,0.35); }
.search-input:focus {
  border-color: var(--c-primary);
  background: rgba(255,255,255,0.10);
  width: 180px;
  outline: none;
}
.search-btn {
  height: 40px;
  width: 40px;
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  background: var(--c-primary);
  color: var(--c-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  flex-shrink: 0;
}
.search-btn:hover { background: #d4637a; }
.search-btn:focus-visible { outline: 2px solid var(--c-secondary); outline-offset: 2px; }

/* ===== HERO ===== */
.hero-band {
  position: relative;
  min-height: 45vh;
  background: var(--c-dark);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.hero-inner {
  display: flex;
  align-items: center;
  flex: 1;
  gap: 2rem;
  padding: 2.5rem 2rem 3.5rem;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}
.hero-media {
  flex: 0 0 38%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-height: 320px;
  object-fit: cover;
}
.hero-decor-circle {
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(235,135,156,0.18) 0%, transparent 70%);
  top: -30px;
  left: -30px;
  pointer-events: none;
}
.hero-text {
  flex: 1;
  text-align: right;
}
.hero-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--c-secondary);
  line-height: 1.25;
  margin-bottom: 0.75rem;
  letter-spacing: 0.02em;
}
.hero-sub {
  font-size: 1rem;
  color: rgba(255,182,193,0.65);
  font-weight: 300;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 1.8rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--c-primary), #d4637a);
  color: var(--c-white);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.hero-cta:hover {
  color: var(--c-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, #d4637a, var(--c-primary));
}
.hero-cta:focus-visible { outline: 2px solid var(--c-secondary); outline-offset: 3px; }

/* 斜切色带 */
.hero-slash {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--c-surface);
  clip-path: polygon(0 60px, 100% 0, 100% 60px);
  pointer-events: none;
}

/* ===== MAIN 区域 ===== */
main { flex: 1; }

.wrap {
  display: flex;
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  align-items: flex-start;
}

/* ===== ASIDE（左侧） ===== */
.site-aside {
  flex: 0 0 220px;
  order: -1;
  position: sticky;
  top: calc(var(--header-h) + 1rem);
}
.aside-inner {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-border);
}
.aside-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--c-border);
  letter-spacing: 0.03em;
}
.aside-title span { display: inline; }
.aside-links { display: flex; flex-direction: column; gap: 0.2rem; }
.aside-link {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-text-muted);
  transition: background var(--transition), color var(--transition);
}
.aside-link:hover {
  background: var(--c-surface-2);
  color: var(--c-primary);
}
.aside-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  padding: 0.5rem 0.6rem;
  background: var(--c-surface-2);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--c-text-muted);
  font-weight: 500;
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-primary);
  flex-shrink: 0;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* ===== 正文区域 ===== */
.main-content-area { flex: 1; min-width: 0; }

.content-section { background: transparent; }
.content-article { /* 正文 HTML 样式 */ }

/* ===== 正文内容样式 ===== */
.content-article h1,
.content-article h2,
.content-article h3,
.content-article h4 {
  font-family: var(--font-serif);
  color: var(--c-dark);
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
.content-article h2 {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 700;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--c-secondary);
  display: inline-block;
}
.content-article h3 {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 600;
  color: var(--c-primary);
}
.content-article p {
  margin-bottom: 1rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
}
.content-article ul,
.content-article ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.content-article li {
  margin-bottom: 0.4rem;
  line-height: 1.65;
}
.content-article a {
  color: var(--c-primary);
  text-decoration: underline;
  text-decoration-color: rgba(235,135,156,0.4);
  text-underline-offset: 3px;
}
.content-article a:hover {
  text-decoration-color: var(--c-primary);
}
.content-article strong { font-weight: 600; color: var(--c-dark); }
.content-article em { font-style: italic; color: var(--c-text-muted); }
.content-article blockquote {
  border-left: 3px solid var(--c-primary);
  padding: 0.75rem 1rem;
  margin: 1.25rem 0;
  background: var(--c-surface-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--c-text-muted);
}
.content-article table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}
.content-article th {
  background: var(--c-primary);
  color: var(--c-white);
  padding: 0.6rem 0.85rem;
  text-align: left;
  font-weight: 600;
}
.content-article td {
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid var(--c-border);
}
.content-article tr:nth-child(even) td { background: var(--c-surface-2); }
.content-article img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin: 1rem 0;
}

/* div 分区（正文里的 div） */
.content-article div {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--c-border);
  scroll-margin-top: var(--scroll-offset);
}
.content-article div:last-child {
  border-bottom: none;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--c-dark);
  color: rgba(255,182,193,0.75);
  margin-top: auto;
}

.footer-brand-section {
  text-align: center;
  padding: 3rem 1.5rem 1.5rem;
  border-bottom: 1px solid rgba(235,135,156,0.15);
}
.footer-brand-giant {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  color: rgba(255,182,193,0.12);
  letter-spacing: 0.08em;
  line-height: 1;
  margin-bottom: 0.75rem;
  user-select: none;
}
.footer-brand-desc {
  font-size: 0.88rem;
  color: rgba(255,182,193,0.45);
  font-weight: 300;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.6;
}

.footer-nav-section {
  padding: 2rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer-col-title {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.footer-col-title span { display: inline; }
.footer-link-list { display: flex; flex-direction: column; gap: 0.35rem; }
.footer-link-list a {
  font-size: 0.85rem;
  color: rgba(255,182,193,0.55);
  padding: 0.2rem 0;
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}
.footer-link-list a:hover { color: var(--c-primary); }
.footer-about-text {
  font-size: 0.82rem;
  color: rgba(255,182,193,0.40);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}
.footer-palette {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.palette-dot {
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.10);
}

.footer-bottom-section {
  padding: 1.25rem 1.5rem;
  text-align: center;
  border-top: 1px solid rgba(235,135,156,0.10);
}
.footer-copyright {
  font-size: 0.78rem;
  color: rgba(255,182,193,0.35);
  margin-bottom: 0.35rem;
}
.footer-note {
  font-size: 0.72rem;
  color: rgba(255,182,193,0.22);
  line-height: 1.5;
}

/* ===== SCROLL REVEAL ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 300ms ease, transform 300ms ease;
  }
  .reveal.visible {
    opacity: 1;
    transform: none;
  }
  .stagger-item {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 250ms ease, transform 250ms ease;
  }
  .stagger-item.visible {
    opacity: 1;
    transform: none;
  }
}

/* ===== 响应式 ===== */
@media (min-width: 900px) {
  .brand-tagline { display: block; }
  .nav-toggle { display: none; }
}

@media (max-width: 899px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 0.5rem 0 0.25rem;
  }
  .nav-details:not([open]) .nav-menu { display: none; }
  .nav-pill {
    width: 100%;
    min-height: 44px;
    padding: 0 1rem;
    justify-content: flex-start;
    font-size: 0.9rem;
  }
  .search-input { width: 110px; height: 40px; }
  .search-input:focus { width: 140px; }

  .hero-inner {
    flex-direction: column-reverse;
    padding: 1.5rem 1rem 3rem;
    gap: 1.25rem;
  }
  .hero-media { flex: none; width: 100%; max-width: 340px; margin: 0 auto; }
  .hero-text { text-align: center; width: 100%; }
  .hero-h1 { font-size: 1.5rem; }

  .wrap {
    flex-direction: column;
    padding: 1.5rem 1rem 2rem;
    gap: 1.25rem;
  }
  .site-aside {
    flex: none;
    width: 100%;
    position: static;
    order: 0;
  }
  .aside-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .aside-title { grid-column: 1 / -1; margin-bottom: 0; }
  .aside-links { flex-direction: row; flex-wrap: wrap; gap: 0.3rem; }
  .aside-badge { grid-column: 1 / -1; }

  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-cols .footer-col:last-child { grid-column: 1 / -1; }
}

@media (max-width: 599px) {
  .header-brand { padding: 0.5rem 1rem; }
  .header-nav-row { padding: 0.4rem 1rem; gap: 0.5rem; }
  .brand-name { font-size: 1.2rem; }

  .hero-slash { height: 36px; clip-path: polygon(0 36px, 100% 0, 100% 36px); }

  .footer-cols { grid-template-columns: 1fr; }
  .footer-cols .footer-col:last-child { grid-column: auto; }
  .footer-brand-giant { font-size: 3rem; }

  .aside-inner { grid-template-columns: 1fr; }
}

/* ===== 无障碍焦点增强 ===== */
:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
}