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

/* ===== 变量 ===== */
:root {
  --pink:       #eb879c;
  --pink-light: #ffb6c1;
  --dark:       #26171a;
  --dark-2:     #331f24;
  --dark-3:     #3f2830;
  --card-bg:    rgba(255,255,255,0.04);
  --text-main:  #f5e6ea;
  --text-muted: #c9a0ad;
  --radius-card: 28px;
  --radius-sm:   10px;
  --shadow-soft: 0 2px 8px rgba(235,135,156,0.12), 0 6px 24px rgba(38,23,26,0.45);
  --shadow-card: 0 2px 4px rgba(235,135,156,0.08), 0 4px 16px rgba(38,23,26,0.35);
  --font-head:  'Russo One', 'Chakra Petch', system-ui, sans-serif;
  --font-body:  'Chakra Petch', system-ui, sans-serif;
  --nav-h:      52px;
  --brand-h:    60px;
  --total-nav:  112px;
  --transition: 220ms cubic-bezier(.4,0,.2,1);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-size: 16px;
  background: var(--dark);
  color: var(--text-main);
}
body {
  font-family: var(--font-body);
  line-height: 1.65;
  min-height: 100vh;
  background: var(--dark);
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--pink); text-decoration: none; }
a:hover { color: var(--pink-light); }
a:focus-visible {
  outline: 2px solid var(--pink);
  outline-offset: 3px;
  border-radius: 4px;
}
ul, menu { list-style: none; }

/* ===== 包装器 ===== */
.site-wrapper { min-height: 100vh; display: flex; flex-direction: column; }

/* ===== 导航 ===== */
.nav-details {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--dark-2);
  border-bottom: 1px solid rgba(235,135,156,0.2);
  box-shadow: 0 2px 12px rgba(38,23,26,0.6);
}
.nav-details[open] { display: block; }
.nav-details > summary {
  list-style: none;
  cursor: default;
}
.nav-details > summary::-webkit-details-marker { display: none; }

/* 品牌行 */
.nav-brand-row {
  display: flex;
  align-items: center;
  min-height: var(--brand-h);
  padding: 0 24px;
  background: var(--dark-3);
  border-bottom: 1px solid rgba(235,135,156,0.12);
}
.brand-inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  font-family: var(--font-head);
  font-size: 1.35rem;
  letter-spacing: .04em;
}
.brand-logo:hover { color: var(--pink-light); }
.logo-mark { width: 40px; height: 40px; border-radius: 8px; object-fit: contain; }
.brand-name { font-family: var(--font-head); }
.nav-toggle-hint {
  font-size: .72rem;
  color: var(--text-muted);
  letter-spacing: .12em;
  text-transform: uppercase;
  user-select: none;
}

/* 菜单行 */
.nav-menu-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 0;
  min-height: var(--nav-h);
  padding: 6px 24px;
  background: var(--dark-2);
}
.nav-menu-row li { display: flex; align-items: center; }
.nav-link {
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 14px;
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--pink-light);
  background: rgba(235,135,156,0.1);
}
.nav-cta-wrap { margin-left: auto; }
.btn-cta {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 22px;
  background: var(--pink);
  color: var(--dark);
  font-family: var(--font-head);
  font-size: .88rem;
  font-weight: 700;
  border-radius: 20px;
  letter-spacing: .04em;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 8px rgba(235,135,156,0.35);
}
.btn-cta:hover {
  background: var(--pink-light);
  color: var(--dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(235,135,156,0.45);
}

/* scroll-margin for anchored sections */
section[id] { scroll-margin-top: calc(var(--total-nav) + 12px); }

/* ===== Hero ===== */
.hero-section {
  position: relative;
  width: 100%;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
/* 点阵底纹 */
.hero-dot-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(235,135,156,0.25) 1px, transparent 1px);
  background-size: 22px 22px;
  z-index: 1;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(38,23,26,0.82) 0%, rgba(38,23,26,0.45) 60%, rgba(235,135,156,0.12) 100%);
  z-index: 2;
}
.hero-content {
  position: relative;
  z-index: 3;
  max-width: 560px;
  padding: 60px 48px 60px 24px;
  text-align: right;
}
.hero-h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 5vw, 3rem);
  line-height: 1.25;
  color: #fff;
  text-shadow: 0 2px 12px rgba(38,23,26,0.7);
  margin-bottom: 18px;
  letter-spacing: .03em;
}
.hero-sub {
  font-size: 1rem;
  color: var(--pink-light);
  margin-bottom: 28px;
  line-height: 1.6;
}
.btn-hero {
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 32px;
  background: transparent;
  border: 2px solid var(--pink);
  color: var(--pink-light);
  font-family: var(--font-head);
  font-size: .95rem;
  border-radius: 24px;
  letter-spacing: .06em;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 0 0 0 rgba(235,135,156,0);
}
.btn-hero:hover {
  background: var(--pink);
  color: var(--dark);
  box-shadow: 0 4px 20px rgba(235,135,156,0.4);
  transform: translateY(-2px);
}

/* ===== 主体 ===== */
.main-area {
  flex: 1;
  background: var(--dark);
  padding: 48px 0 64px;
}
.wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 内容布局：aside 左 + article 右 ===== */
.content-section { width: 100%; }
.content-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  align-items: start;
}

/* ===== Aside ===== */
.content-aside {
  position: sticky;
  top: calc(var(--total-nav) + 16px);
}
.aside-card {
  background: var(--card-bg);
  border: 1px solid rgba(235,135,156,0.22);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
}
.aside-title {
  font-family: var(--font-head);
  font-size: .85rem;
  color: var(--pink);
  letter-spacing: .1em;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.aside-title > span { display: inline; }
.aside-nav-list { display: flex; flex-direction: column; gap: 4px; }
.aside-link {
  display: block;
  padding: 8px 12px;
  font-size: .88rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  line-height: 1.4;
  min-height: 40px;
  display: flex;
  align-items: center;
}
.aside-link:hover {
  color: var(--pink-light);
  background: rgba(235,135,156,0.1);
}

/* ===== Article / 正文 ===== */
.content-article {
  min-width: 0;
}

/* 正文内 section 样式（来自 page.content） */
.content-article section {
  margin-bottom: 56px;
  scroll-margin-top: calc(var(--total-nav) + 12px);
}
.content-article section:last-child { margin-bottom: 0; }

/* h2 装饰 */
.content-article h2 {
  font-family: var(--font-head);
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  color: var(--pink-light);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(235,135,156,0.2);
  letter-spacing: .03em;
}
.content-article h2 > span { display: inline; }
.content-article h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--pink);
  margin: 24px 0 12px;
  letter-spacing: .02em;
}
.content-article h3 > span { display: inline; }

/* 正文段落、列表 */
.content-article p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-main);
  margin-bottom: 14px;
}
.content-article ul,
.content-article ol {
  padding-left: 20px;
  margin-bottom: 14px;
  color: var(--text-main);
}
.content-article li {
  margin-bottom: 8px;
  font-size: 1rem;
  line-height: 1.65;
}
.content-article ul { list-style: disc; }
.content-article ol { list-style: decimal; }

/* 卡片 / 描边卡片 */
.content-article .card,
.content-article figure {
  background: var(--card-bg);
  border: 1px solid rgba(235,135,156,0.22);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  margin: 24px 0;
  box-shadow: none;
}

/* 强调 */
.content-article strong { color: var(--pink-light); font-weight: 600; }
.content-article em { color: var(--pink); font-style: normal; font-weight: 500; }
.content-article a { color: var(--pink); border-bottom: 1px solid rgba(235,135,156,0.35); }
.content-article a:hover { color: var(--pink-light); border-bottom-color: var(--pink-light); }

/* 表格 */
.content-article table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: .95rem;
}
.content-article th {
  background: rgba(235,135,156,0.15);
  color: var(--pink-light);
  font-family: var(--font-head);
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(235,135,156,0.25);
}
.content-article td {
  padding: 9px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  color: var(--text-main);
}
.content-article tr:last-child td { border-bottom: none; }

/* ===== 页脚：仅 p + small ===== */
.site-footer {
  background: var(--dark-3);
  border-top: 1px solid rgba(235,135,156,0.18);
  padding: 32px 24px 24px;
  text-align: center;
}
.site-footer > p {
  font-family: var(--font-head);
  font-size: .95rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  line-height: 1.5;
}
.site-footer > small {
  display: block;
  font-size: .8rem;
  color: rgba(201,160,173,0.6);
  letter-spacing: .04em;
}

/* ===== Scroll Reveal 动效 ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 260ms ease, transform 260ms ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-stagger { transition-delay: calc(var(--i, 0) * 80ms); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .content-layout {
    grid-template-columns: 1fr;
  }
  .content-aside {
    position: static;
  }
  .aside-nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
  }
  .aside-link {
    padding: 6px 14px;
    min-height: 40px;
  }
}

@media (max-width: 680px) {
  .hero-content {
    padding: 40px 20px;
    text-align: center;
    max-width: 100%;
  }
  .nav-menu-row {
    padding: 6px 12px;
    gap: 2px;
  }
  .nav-link {
    padding: 0 10px;
    font-size: .82rem;
  }
  .nav-brand-row { padding: 0 16px; }
  .btn-cta { padding: 0 16px; font-size: .82rem; }
  .wrap { padding: 0 16px; }
  .content-article h2 { font-size: 1.2rem; }
  .hero-h1 { font-size: 1.6rem; }
  :root { --total-nav: 108px; }
}

@media (max-width: 480px) {
  .nav-menu-row { gap: 0; }
  .nav-link { padding: 0 8px; font-size: .78rem; }
  .btn-cta { display: none; }
  .aside-card { border-radius: 16px; padding: 16px; }
  .content-article section { margin-bottom: 40px; }
}