@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');

/* ============================================================
   CSS 变量 & 重置
   ============================================================ */
:root {
  --c-bg: #1A1A2E;
  --c-gold: #C9A84C;
  --c-cream: #F5F0E8;
  --c-bg2: #141424;
  --c-bg3: #22223a;
  --c-gold-dim: rgba(201,168,76,0.18);
  --c-gold-border: rgba(201,168,76,0.35);
  --c-cream-dim: rgba(245,240,232,0.7);
  --c-cream-faint: rgba(245,240,232,0.12);
  --font-serif: 'Bodoni Moda', 'Georgia', serif;
  --font-sans: 'Jost', 'Helvetica Neue', sans-serif;
  --nav-h: 62px;
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
  --radius-card: 4px;
  --max-w: 1180px;
  --aside-w: 240px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 17px;
  background: var(--c-bg);
  color: var(--c-cream);
  scroll-padding-top: var(--nav-h);
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  background: var(--c-bg);
  color: var(--c-cream);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-gold); text-decoration: none; transition: color var(--transition); }
a:hover, a:focus-visible { color: var(--c-cream); text-decoration: underline; }
ul, ol { list-style: none; }
h1,h2,h3,h4,h5,h6 { font-family: var(--font-serif); font-weight: 700; line-height: 1.2; }
p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

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

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 0 2rem;
  background: rgba(20,20,36,0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-gold-border);
}

.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--c-gold);
  border: 1px solid var(--c-gold-border);
  border-radius: 2px;
  transition: border-color var(--transition);
}
.header-logo:hover { border-color: var(--c-gold); text-decoration: none; }
.nav-logo-mark { width: 32px; height: 32px; object-fit: contain; }
.nav-logo-text {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-gold);
  line-height: 1;
}

.site-nav { flex: 1; }
.site-nav ol {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  flex-wrap: wrap;
}
.site-nav ol li { display: flex; }
.site-nav ol li a.nav-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 0.75rem;
  min-height: 40px;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--c-cream-dim);
  border-radius: 2px;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.site-nav ol li a.nav-link:hover,
.site-nav ol li a.nav-link:focus-visible {
  color: var(--c-gold);
  background: var(--c-gold-dim);
  text-decoration: none;
}
.nav-icon { font-style: normal; font-size: 0.8rem; opacity: 0.65; }
.nav-label { }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  min-height: 40px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-gold);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ============================================================
   Hero 区块
   ============================================================ */
.hero-wrap {
  position: relative;
  width: 100%;
  height: 45vh;
  min-height: 280px;
  max-height: 520px;
  margin-top: var(--nav-h);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.hero-parallax-bg {
  position: absolute;
  inset: -15% 0;
  will-change: transform;
  z-index: 0;
}
.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(26,26,46,0.92) 0%,
    rgba(26,26,46,0.55) 50%,
    rgba(26,26,46,0.78) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: right;
  padding: 2.5rem 3rem 2.5rem 1.5rem;
  max-width: 640px;
}
.hero-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--c-cream);
  letter-spacing: 0.02em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
  text-shadow: 0 2px 24px rgba(0,0,0,0.6);
}
.hero-sub {
  font-family: var(--font-sans);
  font-size: clamp(0.88rem, 1.8vw, 1.05rem);
  font-weight: 300;
  color: var(--c-gold);
  letter-spacing: 0.06em;
  text-shadow: 0 1px 12px rgba(0,0,0,0.5);
  margin-bottom: 0;
}

/* ============================================================
   主体内容区
   ============================================================ */
.site-main {
  flex: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.page-article { width: 100%; }

.article-with-aside {
  display: grid;
  grid-template-columns: 1fr var(--aside-w);
  gap: 3rem;
  align-items: start;
}

.article-body { min-width: 0; }

.content-section { width: 100%; }

/* ============================================================
   正文内部排版（page.content 注入后样式）
   ============================================================ */
.content-section h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--c-cream);
  margin-top: 3rem;
  margin-bottom: 0.5rem;
  padding-bottom: 0.4rem;
  scroll-margin-top: calc(var(--nav-h) + 1rem);
}

.content-section h2 + hr,
.content-section h3 + hr {
  border: none;
  border-top: 1px solid var(--c-gold-border);
  margin: 0 0 1.5rem;
}

.content-section h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 600;
  color: var(--c-gold);
  margin-top: 2rem;
  margin-bottom: 0.4rem;
  scroll-margin-top: calc(var(--nav-h) + 1rem);
}

.content-section p {
  color: var(--c-cream-dim);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.1em;
}

.content-section ul,
.content-section ol {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1.1em;
  color: var(--c-cream-dim);
}
.content-section ol { list-style: decimal; }
.content-section li { margin-bottom: 0.4em; line-height: 1.7; }

.content-section strong { color: var(--c-cream); font-weight: 600; }
.content-section em { color: var(--c-gold); font-style: italic; }
.content-section a { color: var(--c-gold); border-bottom: 1px solid var(--c-gold-border); }
.content-section a:hover { color: var(--c-cream); border-bottom-color: var(--c-cream); }

/* section 块分隔 */
.content-section section,
.content-section > section {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--c-cream-faint);
  scroll-margin-top: calc(var(--nav-h) + 1rem);
}
.content-section > section:last-child { border-bottom: none; }

/* 卡片类（正文里可能有） */
.content-section .card,
.content-section article {
  background: var(--c-bg3);
  border-radius: var(--radius-card);
  border-bottom: 3px solid var(--c-gold);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.content-section .card:hover { box-shadow: 0 4px 24px rgba(201,168,76,0.13); }

/* 问答类 */
.content-section details { margin-bottom: 1em; }
.content-section summary {
  color: var(--c-gold);
  cursor: pointer;
  font-weight: 600;
  padding: 0.5em 0;
}

/* ============================================================
   侧边栏
   ============================================================ */
.site-aside {
  position: sticky;
  top: calc(var(--nav-h) + 1.5rem);
}

.aside-inner {
  background: var(--c-bg3);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--c-gold);
  padding: 1.5rem 1.25rem;
}

.aside-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-gold);
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.aside-inner hr {
  border: none;
  border-top: 1px solid var(--c-gold-border);
  margin: 0 0 1rem;
}

.aside-nav-list { margin-bottom: 1.5rem; }
.aside-nav-list li { margin-bottom: 0.2rem; }
.aside-nav-list a {
  display: block;
  padding: 0.4rem 0.5rem;
  font-size: 0.85rem;
  color: var(--c-cream-dim);
  border-radius: 2px;
  transition: color var(--transition), background var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.aside-nav-list a:hover {
  color: var(--c-gold);
  background: var(--c-gold-dim);
  text-decoration: none;
}

.aside-brand-note {
  border-top: 1px solid var(--c-cream-faint);
  padding-top: 1rem;
  font-size: 0.8rem;
  color: rgba(245,240,232,0.45);
  line-height: 1.6;
}
.aside-brand-note p { margin-bottom: 0; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: var(--c-bg2);
  border-top: 1px solid var(--c-gold-border);
  padding: 0 2rem;
}

.footer-contact-block {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--c-cream-faint);
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-contact-label {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-gold);
  letter-spacing: 0.05em;
  margin-bottom: 0;
}
.footer-email {
  font-size: 0.9rem;
  color: var(--c-cream-dim);
  margin-bottom: 0;
}

.footer-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  padding: 2.5rem 0;
}

.footer-col-brand .footer-address {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-gold);
  display: block;
}
.footer-brand-desc {
  font-size: 0.88rem;
  color: rgba(245,240,232,0.5);
  line-height: 1.6;
}

.footer-col-links ul { list-style: none; }
.footer-col-links ul li { margin-bottom: 0.3rem; }
.footer-col-links ul li a {
  font-size: 0.88rem;
  color: var(--c-cream-dim);
  padding: 0.35rem 0;
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  transition: color var(--transition);
}
.footer-col-links ul li a:hover { color: var(--c-gold); text-decoration: none; }

.footer-bottom {
  border-top: 1px solid var(--c-cream-faint);
  padding: 1.25rem 0;
  text-align: center;
}
.footer-copy {
  font-size: 0.8rem;
  color: rgba(245,240,232,0.35);
  margin-bottom: 0;
}

/* ============================================================
   视差 / 滚动动效
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .reveal-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal-up.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
  .reveal-fade {
    opacity: 0;
    transition: opacity 0.7s ease;
  }
  .reveal-fade.is-visible { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-up, .reveal-fade { opacity: 1 !important; transform: none !important; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
  .article-with-aside {
    grid-template-columns: 1fr;
  }
  .site-aside {
    position: static;
    order: -1;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 680px) {
  :root { --nav-h: 56px; }

  .site-header { padding: 0 1rem; }

  .site-nav { display: none; position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(20,20,36,0.98); backdrop-filter: blur(16px);
    padding: 1rem; z-index: 890; border-bottom: 1px solid var(--c-gold-border); }
  .site-nav.is-open { display: block; }
  .site-nav ol { flex-direction: column; gap: 0.25rem; }
  .site-nav ol li a.nav-link { width: 100%; min-height: 48px; font-size: 0.95rem; padding: 0.75rem 1rem; }

  .nav-toggle { display: flex; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero-wrap { height: 40vh; min-height: 240px; }
  .hero-content { padding: 1.5rem 1.25rem; text-align: right; }
  .hero-h1 { font-size: 1.5rem; }

  .site-main { padding: 2rem 1rem 3rem; }

  .footer-contact-block { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .site-footer { padding: 0 1rem; }
}

@media (max-width: 400px) {
  .hero-h1 { font-size: 1.25rem; }
  .aside-nav-list a { font-size: 0.9rem; }
}