/* ============ 全球孤独症研究中心 Global Autism Research Center ============ */
:root {
  --ink: #22313f;
  --muted: #5f7180;
  --bg: #faf7f2;
  --card: #ffffff;
  --primary: #14707e;
  --primary-dark: #0d5561;
  --primary-soft: #e3f0f1;
  --accent: #e07a5f;
  --accent-soft: #fdeee8;
  --line: #e7e1d6;
  --shadow: 0 6px 24px rgba(34, 49, 63, .08);
  --radius: 14px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
}

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

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

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand svg { width: 40px; height: 40px; flex: none; }
.brand-text .cn { font-size: 18px; font-weight: 700; letter-spacing: 1px; color: var(--ink); display: block; line-height: 1.3; }
.brand-text .en { font-size: 11px; color: var(--muted); letter-spacing: .5px; }
html[lang="en"] .brand-text .cn { font-size: 15.5px; letter-spacing: .3px; }
html[lang="en"] .page-banner h1 { letter-spacing: .5px; }
html[lang="en"] .hero h1 { letter-spacing: .5px; }

.main-nav ul { list-style: none; display: flex; gap: 4px; }
.main-nav a {
  display: block; padding: 8px 14px; border-radius: 8px;
  font-size: 15px; color: var(--ink); font-weight: 500;
}
.main-nav a:hover { background: var(--primary-soft); color: var(--primary-dark); }
.main-nav a.active { background: var(--primary); color: #fff; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

.main-nav { margin-left: auto; }
.lang-switch {
  margin-left: 12px; font-size: 13px; font-weight: 600;
  color: var(--primary); background: var(--primary-soft);
  border: 1.5px solid transparent; padding: 5px 14px;
  border-radius: 999px; white-space: nowrap; letter-spacing: .5px;
}
.lang-switch:hover { background: var(--primary); color: #fff; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, #2a8f9c 100%);
  color: #fff; padding: 88px 0 96px; position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -120px; top: -120px;
  width: 420px; height: 420px; border-radius: 50%;
  background: rgba(255, 255, 255, .07);
}
.hero .container { position: relative; z-index: 1; }
.hero .eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 3px;
  background: rgba(255, 255, 255, .16); padding: 6px 16px; border-radius: 999px;
  margin-bottom: 20px;
}
.hero h1 { font-size: 40px; line-height: 1.3; letter-spacing: 2px; margin-bottom: 10px; }
.hero .en-title { font-size: 16px; opacity: .85; letter-spacing: 1px; margin-bottom: 22px; }
.hero p.lead { max-width: 640px; font-size: 17px; opacity: .94; margin-bottom: 32px; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 600; transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary-dark); }
.btn-light:hover { color: var(--primary-dark); box-shadow: 0 8px 20px rgba(0,0,0,.18); }
.btn-outline { border: 1.5px solid rgba(255,255,255,.7); color: #fff; margin-left: 12px; }
.btn-outline:hover { color: #fff; background: rgba(255,255,255,.12); }

/* ---------- Page banner (subpages) ---------- */
.page-banner {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff; padding: 56px 0;
}
.page-banner h1 { font-size: 30px; letter-spacing: 2px; }
.page-banner .en { font-size: 14px; opacity: .85; letter-spacing: 1px; }

/* ---------- Sections ---------- */
.section { padding: 72px 0; }
.section.alt { background: #f3efe8; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head .kicker { color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: 2px; }
.section-head h2 { font-size: 30px; letter-spacing: 1px; margin: 8px 0 10px; }
.section-head p { color: var(--muted); font-size: 15px; }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow);
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card .icon {
  width: 48px; height: 48px; border-radius: 12px; display: flex;
  align-items: center; justify-content: center; font-size: 24px;
  background: var(--primary-soft); margin-bottom: 16px;
}
.card.accent .icon { background: var(--accent-soft); }

/* Mission / Vision */
.mv-card { border-top: 4px solid var(--primary); }
.mv-card.vision { border-top-color: var(--accent); }
.mv-card ul { list-style: none; margin-top: 12px; }
.mv-card li { padding-left: 22px; position: relative; color: var(--muted); font-size: 15px; margin-bottom: 8px; }
.mv-card li::before { content: "◆"; position: absolute; left: 0; color: var(--primary); font-size: 12px; top: 5px; }
.mv-card.vision li::before { color: var(--accent); }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 12px; }
.stat .num { font-size: 34px; font-weight: 800; color: var(--primary); }
.stat .label { color: var(--muted); font-size: 14px; }

/* Director strip */
.director-strip { display: flex; align-items: center; gap: 18px; margin-top: 32px; padding: 20px 24px; background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); box-shadow: var(--shadow); }
.director-strip .avatar { flex: none; width: 52px; height: 52px; border-radius: 50%; background: var(--accent-soft); color: #a4523a; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 700; }
.director-strip .who { font-size: 16px; color: var(--ink); }
.director-strip .what { font-size: 14px; color: var(--muted); margin-top: 4px; }
@media (max-width: 640px) { .director-strip { padding: 16px 18px; gap: 14px; } .director-strip .who { font-size: 15px; } }

/* Org chart */
.org-chart { display: flex; flex-direction: column; align-items: center; }
.org-node {
  background: var(--card); border: 1.5px solid var(--primary);
  border-radius: 10px; padding: 12px 28px; text-align: center;
  font-weight: 600; box-shadow: var(--shadow);
}
.org-node .sub { display: block; font-size: 12px; font-weight: 400; color: var(--muted); }
.org-node.top { background: var(--primary); color: #fff; border-color: var(--primary); }
.org-node.top .sub { color: rgba(255,255,255,.8); }
.org-vline { width: 2px; height: 28px; background: var(--line); }
.org-hline { width: 70%; height: 2px; background: var(--line); }
.org-branch { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; width: 100%; margin-top: 0; }
.org-branch .org-node { border-color: var(--accent); width: 100%; }
.org-branch .org-node .sub { font-size: 13px; }

/* People */
.person { text-align: center; }
.person .avatar {
  width: 96px; height: 96px; border-radius: 50%; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary-soft), #d3e6e8);
  display: flex; align-items: center; justify-content: center;
  font-size: 34px; font-weight: 700; color: var(--primary-dark);
}
.person h3 { font-size: 18px; }
.person .role { color: var(--accent); font-size: 13px; font-weight: 600; margin: 4px 0 8px; }
.person p { font-size: 14px; color: var(--muted); text-align: left; }

/* News */
.news-item {
  display: flex; gap: 24px; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 28px; box-shadow: var(--shadow); margin-bottom: 20px;
}
.news-date {
  flex: none; width: 76px; text-align: center; background: var(--primary-soft);
  border-radius: 10px; padding: 10px 0; height: fit-content;
}
.news-date .d { font-size: 24px; font-weight: 800; color: var(--primary-dark); line-height: 1.2; }
.news-date .m { font-size: 12px; color: var(--muted); }
.news-item h3 { font-size: 18px; margin-bottom: 6px; }
.news-item .tag {
  display: inline-block; font-size: 12px; background: var(--accent-soft);
  color: var(--accent); border-radius: 999px; padding: 2px 12px; margin-bottom: 8px;
}
.news-item p { color: var(--muted); font-size: 15px; }

/* Resources */
.res-card h3 { font-size: 17px; }
.res-meta { font-size: 13px; color: var(--muted); margin: 8px 0 14px; }
.res-link {
  display: inline-block; font-size: 14px; font-weight: 600;
  color: var(--primary); border-bottom: 2px solid var(--primary-soft);
}

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact-list { list-style: none; }
.contact-list li { display: flex; gap: 12px; margin-bottom: 18px; font-size: 15px; }
.contact-list .ic { flex: none; width: 40px; height: 40px; border-radius: 10px; background: var(--primary-soft); display: flex; align-items: center; justify-content: center; font-size: 18px; }
.contact-list .label { font-weight: 600; display: block; }
.contact-list .val { color: var(--muted); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 11px 14px; border: 1.5px solid var(--line);
  border-radius: 10px; font-size: 15px; font-family: inherit; background: #fff;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }
.btn-primary { background: var(--primary); color: #fff; border: none; cursor: pointer; }
.btn-primary:hover { color: #fff; background: var(--primary-dark); }
.form-note { font-size: 13px; color: var(--muted); margin-top: 10px; }

/* CTA band */
.cta-band {
  background: linear-gradient(135deg, var(--accent), #d96a4e);
  color: #fff; text-align: center; padding: 56px 24px; border-radius: var(--radius);
}
.cta-band h2 { font-size: 26px; margin-bottom: 8px; }
.cta-band p { opacity: .92; margin-bottom: 22px; }

/* Timeline */
.timeline { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 28px; box-shadow: var(--shadow); }
.t-item { display: flex; gap: 24px; padding: 22px 0; border-bottom: 1px dashed var(--line); }
.t-item:last-child { border-bottom: none; }
.t-year { flex: none; width: 108px; font-weight: 700; color: var(--primary); font-size: 15px; }
.t-body h4 { font-size: 16px; margin-bottom: 6px; }
.t-body ul { list-style: none; }
.t-body li { font-size: 14px; color: var(--muted); padding-left: 16px; position: relative; margin-bottom: 4px; }
.t-body li::before { content: "·"; position: absolute; left: 4px; }

/* Pillar blocks */
.pillar { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--primary); border-radius: var(--radius); padding: 30px 32px; box-shadow: var(--shadow); margin-bottom: 24px; }
.pillar:nth-child(2) { border-left-color: var(--accent); }
.pillar h3 { font-size: 20px; margin-bottom: 6px; }
.pillar .en-sub { font-size: 13px; color: var(--muted); letter-spacing: .5px; margin-bottom: 14px; }
.pillar .meta { font-size: 14px; color: var(--ink); margin: 10px 0 4px; }
.pillar .meta span { color: var(--muted); }
.pillar ul { list-style: none; margin-top: 12px; }
.pillar li { font-size: 15px; color: var(--muted); padding-left: 20px; position: relative; margin-bottom: 6px; }
.pillar li::before { content: "▸"; position: absolute; left: 0; color: var(--primary); font-size: 12px; top: 4px; }
.pillar .mission { font-size: 15.5px; color: var(--ink); margin-bottom: 4px; }
.pillar h4 { font-size: 12px; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); margin: 24px 0 6px; font-weight: 700; }

/* Member chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chip { background: var(--primary-soft); color: var(--primary-dark); border-radius: 999px; padding: 5px 14px; font-size: 13.5px; }
.chip.accent { background: var(--accent-soft); color: #a4523a; }

/* Statement */
.statement {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 40px; box-shadow: var(--shadow); font-size: 17px; line-height: 1.9;
}
.statement strong { color: var(--primary-dark); }

/* ---------- Footer ---------- */
.site-footer { background: #1d2b36; color: #b8c4cd; padding: 52px 0 0; margin-top: 72px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; letter-spacing: 1px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 8px; font-size: 14px; }
.site-footer a { color: #b8c4cd; }
.site-footer a:hover { color: #fff; }
.footer-brand .cn { color: #fff; font-weight: 700; font-size: 17px; }
.footer-brand .en { font-size: 12px; letter-spacing: .5px; margin: 4px 0 12px; }
.footer-brand p { font-size: 13px; max-width: 320px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; font-size: 13px; text-align: center; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .main-nav {
    position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    display: none; padding: 12px 0;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .nav-toggle { display: block; order: 5; margin-left: 0; }
  .lang-switch { order: 4; margin-left: auto; }
  .hero h1 { font-size: 30px; }
  .grid-2, .grid-3, .stats, .contact-grid { grid-template-columns: 1fr; }
  .org-branch { grid-template-columns: 1fr; }
  .org-hline { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .news-item { flex-direction: row; }
}