/* ============================================================
   中国家族办公室学会 · 新中式设计系统「藏青鎏金」
   Palette: 藏青 #14213D · 鎏金 #C9A227 · 宣纸 #F7F3EA
   Type:    标题 思源宋体系 · 正文 思源黑体系（全系统字体栈，无外链字体）
   ============================================================ */

:root {
  --navy: #14213D;
  --navy-deep: #0C1526;
  --navy-soft: #1D3055;
  --gold: #C9A227;
  --gold-soft: #E3C567;
  --gold-faint: rgba(201, 162, 39, 0.14);
  --paper: #F7F3EA;
  --paper-2: #FCFAF4;
  --card: #FFFFFF;
  --text: #2B2F3A;
  --muted: #6E7480;
  --muted-dark: #9AA3B5;
  --hairline: #E7E0CF;
  --hairline-dark: rgba(227, 197, 103, 0.25);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --container: 1180px;
  --radius: 4px;
  --shadow-card: 0 1px 2px rgba(20, 33, 61, 0.05);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--paper-2);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--gold); }
ul, ol { padding-left: 1.3em; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--navy);
  line-height: 1.3;
  margin: 0 0 0.5em;
  font-weight: 600;
}
h1 { font-size: clamp(1.9rem, 4.6vw, 3.1rem); letter-spacing: 0.02em; }
h2 { font-size: clamp(1.45rem, 3vw, 2rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.35rem); }
p { margin: 0 0 1em; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 860px; }

/* ---------- 印章 Logo ---------- */
.brand { display: flex; align-items: center; gap: 12px; color: var(--navy); }
.brand:hover { color: var(--navy); }
.seal {
  flex: none;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border: 2px solid var(--gold);
  border-radius: 7px;
  font-family: var(--font-serif);
  font-size: 24px; font-weight: 700;
  color: var(--gold);
  background:
    radial-gradient(circle at 30% 25%, rgba(201, 162, 39, 0.16), transparent 65%),
    var(--navy);
  box-shadow: inset 0 0 0 1px rgba(201, 162, 39, 0.35), 0 1px 3px rgba(20, 33, 61, 0.25);
}
.brand-name {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.25;
}
.brand-sub {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  margin-top: 3px;
}
.on-dark .brand-name { color: #fff; }
.on-dark .brand-sub { color: var(--muted-dark); }
.on-dark .brand:hover { color: #fff; }

/* ---------- 导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(252, 250, 244, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hairline);
}
.header-inner { display: flex; align-items: center; gap: 28px; min-height: 76px; }
.main-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 10px 13px;
  font-size: 0.95rem;
  color: var(--text);
  border-radius: 3px;
  position: relative;
}
.main-nav a::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 4px;
  height: 2px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.25s var(--ease);
}
.main-nav a:hover::after, .main-nav a[aria-current="page"]::after { transform: scaleX(1); }
.main-nav a[aria-current="page"] { color: var(--navy); font-weight: 600; }

.lang-switch {
  display: flex; align-items: center; gap: 2px;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: 3px;
  margin-left: 8px;
}
.lang-switch a {
  padding: 4px 9px;
  font-size: 0.8rem;
  border-radius: 2px;
  color: var(--muted);
  letter-spacing: 0.02em;
}
.lang-switch a:hover { color: var(--navy); background: var(--gold-faint); }
.lang-switch a[aria-current="true"] { color: var(--navy); background: var(--gold-faint); font-weight: 600; }

.nav-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid var(--hairline);
  background: transparent;
  border-radius: 3px;
  padding: 9px 11px;
  cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; stroke: var(--navy); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='720' height='420' viewBox='0 0 720 420'%3E%3Cg fill='none' stroke='%2314213D' stroke-opacity='0.05' stroke-width='1.2'%3E%3Cpath d='M0 330 C120 300 180 240 300 250 C420 260 470 190 600 200 C660 205 700 190 720 185'/%3E%3Cpath d='M0 370 C140 340 200 290 330 300 C450 310 500 250 640 260'/%3E%3Cpath d='M60 240 C150 210 210 160 320 170 C430 180 480 120 620 130'/%3E%3C/g%3E%3C/svg%3E");
  background-size: cover;
  background-position: center bottom;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: center;
  padding: clamp(56px, 8vw, 104px) 24px clamp(44px, 6vw, 72px);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--gold); }
.hero h1 { margin-bottom: 18px; }
.hero .lede {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--muted);
  max-width: 34em;
  margin-bottom: 30px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* 竖排文字 + 鎏金边框（匾额式） */
.hero-aside {
  position: relative;
  justify-self: end;
  border: 1px solid var(--hairline-dark);
  outline: 1px solid var(--hairline-dark);
  outline-offset: 6px;
  background: var(--navy);
  padding: 34px 30px;
  display: flex;
  gap: 26px;
  align-items: stretch;
  border-radius: 2px;
}
.hero-aside .vertical {
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  letter-spacing: 0.42em;
  color: var(--gold-soft);
  line-height: 1.4;
}
.hero-aside .vertical-sub {
  writing-mode: vertical-rl;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--muted-dark);
  border-right: 1px solid var(--hairline-dark);
  padding-right: 16px;
}

/* ---------- 信任数据条 ---------- */
.trustbar {
  background: var(--navy-deep);
  color: #EDEAE0;
}
.trustbar-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.trust-item {
  padding: 22px 26px;
  border-right: 1px solid rgba(227, 197, 103, 0.18);
}
.trust-item:last-child { border-right: none; }
.trust-num {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  color: var(--gold-soft);
  line-height: 1.2;
}
.trust-label { font-size: 0.85rem; color: var(--muted-dark); margin-top: 4px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--gold); color: var(--navy-deep); }
.btn-gold { background: var(--gold); color: var(--navy-deep); }
.btn-gold:hover { background: var(--gold-soft); }
.btn-outline { border-color: var(--gold); color: var(--gold); background: transparent; }
.btn-outline:hover { background: var(--gold-faint); color: var(--gold-soft); }
.btn-light { background: rgba(255, 255, 255, 0.08); color: #fff; border-color: rgba(255, 255, 255, 0.35); }
.btn-light:hover { background: var(--gold); border-color: var(--gold); color: var(--navy-deep); }
.btn-sm { padding: 9px 20px; font-size: 0.85rem; }

/* ---------- 区块通用 ---------- */
.section { padding: clamp(56px, 7vw, 92px) 0; }
.section-alt { background: var(--paper); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.section-dark { background: var(--navy-deep); color: #E8E5DA; }
.section-dark h2, .section-dark h3 { color: #fff; }

.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: clamp(28px, 4vw, 48px); }
.section-index {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--gold);
  letter-spacing: 0.25em;
  display: block;
  margin-bottom: 10px;
}
.section-head .section-sub { color: var(--muted); max-width: 30em; margin: 0; }
.section-dark .section-head .section-sub { color: var(--muted-dark); }
.section-more { flex: none; font-weight: 600; font-size: 0.9rem; white-space: nowrap; padding-bottom: 4px; }
.section-more::after { content: " →"; color: var(--gold); }

/* ---------- 卡片 ---------- */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cards-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow-card);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
  position: relative;
}
.card::before {
  content: "";
  position: absolute; top: 0; left: 28px;
  width: 44px; height: 3px;
  background: var(--gold);
}
.card:hover { border-color: var(--gold); transform: translateY(-3px); }
.card h3 { margin-top: 6px; }
.card p { color: var(--muted); font-size: 0.93rem; margin-bottom: 0; }
.card .card-kicker {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
}

/* ---------- 数字概览 ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px 40px; }
.stat { padding: 8px 0 4px; border-top: 2px solid var(--gold); }
.stat-num {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  color: var(--navy);
  line-height: 1.2;
}
.stat-num small { font-size: 0.55em; color: var(--gold); margin-left: 2px; }
.stat-text { font-size: 0.9rem; color: var(--muted); margin-top: 8px; }
.stat-src { font-size: 0.74rem; color: var(--muted-dark); display: block; margin-top: 6px; }
.stats-note { margin-top: 34px; font-size: 0.78rem; color: var(--muted-dark); }

/* ---------- 文章卡 ---------- */
.article-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.article-card {
  display: flex; flex-direction: column;
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.article-card:hover { border-color: var(--gold); transform: translateY(-3px); }
.article-card:hover .article-title a { color: var(--gold); }
.article-meta {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.76rem;
  color: var(--muted-dark);
  margin-bottom: 12px;
}
.article-meta .cat { color: var(--gold); font-weight: 700; letter-spacing: 0.08em; }
.article-title { font-family: var(--font-serif); font-size: 1.08rem; line-height: 1.5; margin: 0 0 10px; }
.article-title a { color: var(--navy); }
.article-excerpt { font-size: 0.87rem; color: var(--muted); margin: 0 0 16px; flex: 1; }
.article-more { font-size: 0.82rem; font-weight: 600; color: var(--navy); }
.article-more::after { content: " →"; color: var(--gold); }

/* ---------- 文章页 ---------- */
.page-hero {
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
  padding: clamp(44px, 6vw, 72px) 0;
}
.page-hero .breadcrumb {
  font-size: 0.8rem;
  color: var(--muted-dark);
  margin-bottom: 20px;
}
.page-hero .breadcrumb a { color: var(--muted); }
.page-hero .breadcrumb a:hover { color: var(--gold); }
.page-hero h1 { max-width: 22em; }
.page-hero .page-lede { color: var(--muted); max-width: 40em; font-size: 1.05rem; }

.article-hero .article-meta { font-size: 0.82rem; margin-bottom: 18px; }
.article-body { font-size: 1.02rem; }
.article-body h2 {
  font-size: 1.3rem;
  margin: 1.8em 0 0.7em;
  padding-left: 14px;
  border-left: 3px solid var(--gold);
}
.article-body .note {
  background: var(--gold-faint);
  border: 1px solid var(--hairline-dark);
  border-radius: var(--radius);
  padding: 18px 22px;
  font-size: 0.92rem;
  color: #5B5330;
  margin: 1.6em 0;
}
.article-body .note strong { color: var(--navy); }
.article-foot {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: center;
  font-size: 0.85rem; color: var(--muted);
}
.article-nav { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 40px; }

/* ---------- 使命/价值 ---------- */
.value-item {
  border-top: 2px solid var(--gold);
  background: var(--card);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--gold);
  border-radius: var(--radius);
  padding: 28px 26px;
}
.value-item .zh-mark {
  font-family: var(--font-serif);
  font-size: 1.9rem;
  color: var(--gold);
  line-height: 1;
}
.value-item h3 { margin: 12px 0 8px; }
.value-item p { color: var(--muted); font-size: 0.92rem; margin: 0; }

/* ---------- 团队 ---------- */
.team { display: grid; grid-template-columns: repeat(2, minmax(0, 460px)); gap: 22px; justify-content: center; }
.team-card {
  display: flex; gap: 20px; align-items: center;
  background: var(--card); border: 1px solid var(--hairline); border-radius: var(--radius);
  padding: 26px 28px;
}
.team-avatar {
  flex: none;
  width: 72px; height: 72px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--gold-soft);
  background: var(--navy);
  border: 1px solid var(--hairline-dark);
}
.team-card h3 { margin-bottom: 2px; font-size: 1.15rem; }
.team-role { font-size: 0.8rem; letter-spacing: 0.1em; color: var(--gold); font-weight: 700; display: block; margin-bottom: 8px; }
.team-card p { font-size: 0.87rem; color: var(--muted); margin: 0; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 18px;
  padding: 20px 24px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--navy);
  font-weight: 600;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: var(--font-sans);
  font-size: 1.4rem;
  color: var(--gold);
  transition: transform 0.25s var(--ease);
  line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-a { padding: 0 24px 22px; color: var(--muted); }
.faq-item .faq-a a { font-weight: 600; }

/* ---------- CTA ---------- */
.cta-band {
  position: relative;
  background: var(--navy-deep);
  color: #fff;
  text-align: center;
  padding: clamp(56px, 8vw, 88px) 24px;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 14px;
  border: 1px solid var(--hairline-dark);
  pointer-events: none;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: var(--muted-dark); max-width: 36em; margin: 0 auto 30px; }
.cta-band .hero-actions { justify-content: center; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.contact-card {
  background: var(--card); border: 1px solid var(--hairline); border-radius: var(--radius);
  padding: 30px 28px;
}
.contact-card h3 { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; }
.contact-card h3 svg { width: 19px; height: 19px; stroke: var(--gold); flex: none; }
.contact-card p { color: var(--muted); font-size: 0.92rem; margin: 8px 0 0; word-break: break-all; }
.contact-card a { font-weight: 600; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy-deep); color: var(--muted-dark); font-size: 0.88rem; }
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: clamp(48px, 6vw, 72px) 0 44px;
}
.footer-col h4 {
  color: var(--gold-soft);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 9px; }
.footer-col a { color: var(--muted-dark); }
.footer-col a:hover { color: var(--gold-soft); }
.footer-brand p { margin-top: 16px; line-height: 1.8; max-width: 30em; }
.footer-bottom {
  border-top: 1px solid rgba(227, 197, 103, 0.15);
  padding: 20px 0 26px;
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
  font-size: 0.78rem;
}

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.55s var(--ease), transform 0.55s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .cards-3, .article-list, .stats { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-aside { justify-self: start; padding: 28px 26px; }
  .main-nav a { padding: 10px 9px; font-size: 0.88rem; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .team { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .header-inner { min-height: 64px; gap: 14px; }
  .brand-name { font-size: 1.02rem; }
  .seal { width: 40px; height: 40px; font-size: 20px; }
  .nav-toggle { display: block; }
  .main-nav, .lang-switch { display: none; }
  .site-header.open .main-nav {
    display: flex; flex-direction: column; align-items: stretch;
    position: fixed; inset: 64px 0 0 0;
    background: var(--navy-deep);
    padding: 28px 24px calc(28px + env(safe-area-inset-bottom));
    gap: 6px; overflow-y: auto;
  }
  .site-header.open .main-nav a {
    color: #EDEAE0; font-size: 1.08rem; font-family: var(--font-serif);
    padding: 14px 6px; border-bottom: 1px solid rgba(227, 197, 103, 0.16);
  }
  .site-header.open .main-nav a::after { display: none; }
  .site-header.open .lang-switch {
    display: flex; margin: 18px 0 0; align-self: flex-start;
    border-color: rgba(227, 197, 103, 0.35);
  }
  .site-header.open .lang-switch a { color: var(--gold-soft); }
  .site-header.open .lang-switch a[aria-current="true"] { background: rgba(227, 197, 103, 0.18); color: #fff; }
  .trustbar-inner { grid-template-columns: 1fr; }
  .trust-item { border-right: none; border-bottom: 1px solid rgba(227, 197, 103, 0.18); }
  .trust-item:last-child { border-bottom: none; }
  .cards-3, .cards-2, .article-list, .stats, .contact-grid { grid-template-columns: 1fr; }
  .hero-aside { max-width: 100%; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .footer-main { grid-template-columns: 1fr; gap: 30px; }
  .hero-actions .btn { flex: 1 1 auto; }
}

/* 打印友好 */
@media print {
  .site-header, .site-footer, .cta-band, .section-more, .article-nav { display: none; }
  body { background: #fff; }
}