:root {
  --bg: #f7f6fb;
  --card: #ffffff;
  --border: #eee;
  --text: #17151f;
  --text-2: #555;
  --text-3: #888;
  --primary: #7c5cff;
  --primary-bright: #a06bff;
  --primary-soft: #f2effc;
  --radius: 16px;
  --shadow: 0 1px 4px rgba(0,0,0,.08);
}

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

body {
  font-family: "Gantari", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Microsoft YaHei", 微软雅黑, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Header ===== */
.site-header { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
.header-inner { display: flex; align-items: center; gap: 28px; height: 60px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 20px; color: var(--text); }
.logo-mark { font-size: 24px; }
.main-nav { display: flex; gap: 20px; margin-left: auto; font-size: 15px; }
.main-nav a { color: var(--text-2); }
.main-nav a:hover { color: var(--primary); text-decoration: none; }
.cta-btn { background: var(--primary); color: #fff !important; padding: 8px 16px; border-radius: 10px; font-weight: 600; font-size: 14px; }
.cta-btn:hover { background: var(--primary-bright); text-decoration: none; }

/* ===== Hero ===== */
.hero { padding: 72px 0 56px; text-align: center; background: linear-gradient(180deg, var(--primary-soft), var(--bg)); }
.hero-title { font-size: 40px; font-weight: 800; max-width: 720px; margin: 0 auto 18px; line-height: 1.3; }
.hero-sub { font-size: 18px; color: var(--text-2); max-width: 640px; margin: 0 auto 30px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; }
.btn-primary { background: var(--primary); color: #fff !important; padding: 13px 30px; border-radius: 12px; font-weight: 700; font-size: 16px; }
.btn-primary:hover { background: var(--primary-bright); text-decoration: none; }
.btn-ghost { border: 1px solid var(--primary); color: var(--primary) !important; padding: 12px 30px; border-radius: 12px; font-weight: 600; font-size: 16px; }
.center { text-align: center; margin: 30px 0; }

/* ===== Stats ===== */
.stats { background: var(--card); border-bottom: 1px solid var(--border); }
.stats-inner { display: flex; justify-content: center; gap: 80px; padding: 36px 20px; }
.stat { text-align: center; }
.stat-num { font-size: 32px; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 14px; color: var(--text-3); margin-top: 4px; }

/* ===== Sections ===== */
section { padding: 60px 0; }
.section-title { font-size: 30px; font-weight: 800; text-align: center; margin-bottom: 12px; }
.section-sub { text-align: center; color: var(--text-2); margin-bottom: 40px; }

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card, .scenario-card { background: var(--card); border-radius: var(--radius); padding: 26px 22px; box-shadow: var(--shadow); }
.feature-icon, .scenario-icon { font-size: 32px; margin-bottom: 14px; }
.feature-card h3, .scenario-card h3 { font-size: 18px; margin-bottom: 10px; }
.feature-card p, .scenario-card p { font-size: 14px; color: var(--text-2); }

.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* ===== News preview ===== */
.news-preview { background: var(--card); }
.news-list { display: grid; gap: 14px; }
.news-item { display: block; background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; color: var(--text); }
.news-item:hover { border-color: var(--primary); text-decoration: none; }
.news-item h3 { font-size: 16px; margin-bottom: 6px; }
.news-item p { font-size: 14px; color: var(--text-2); }
.news-meta { font-size: 12px; color: var(--text-3); }

/* ===== CTA band ===== */
.cta-band { text-align: center; background: linear-gradient(135deg, var(--primary), var(--primary-bright)); color: #fff; }
.cta-band h2 { font-size: 28px; margin-bottom: 10px; }
.cta-band p { opacity: .9; margin-bottom: 22px; }
.cta-band .btn-primary { background: #fff; color: var(--primary) !important; }

/* ===== List / Article pages ===== */
.page-wrap { padding: 44px 20px 60px; }
.page-head { margin-bottom: 30px; }
.page-head h1 { font-size: 30px; margin-bottom: 10px; }
.lead { color: var(--text-2); }
.list-grid { display: grid; gap: 16px; }
.list-card { display: block; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px 22px; color: var(--text); }
.list-card:hover { border-color: var(--primary); text-decoration: none; }
.list-card h2 { font-size: 18px; margin-bottom: 8px; }
.list-card p { font-size: 14px; color: var(--text-2); }
.meta { font-size: 12px; color: var(--text-3); display: block; margin-bottom: 6px; }

.article-wrap { padding: 40px 20px 60px; max-width: 760px; }
.article-head { margin-bottom: 24px; }
.article-crumb { font-size: 13px; color: var(--text-3); }
.article-head h1 { font-size: 30px; margin: 12px 0 8px; line-height: 1.35; }
.article-meta { font-size: 13px; color: var(--text-3); }
.article-body { font-size: 16px; }
.article-body h2 { font-size: 22px; margin: 30px 0 14px; }
.article-body h3 { font-size: 18px; margin: 24px 0 12px; }
.article-body p { margin-bottom: 16px; }
.article-body ul, .article-body ol { margin: 0 0 16px 24px; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--primary); }
.article-nav { display: flex; justify-content: space-between; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 14px; }

/* ===== Footer ===== */
.site-footer { background: var(--text); color: #ccc; padding: 44px 0 30px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 40px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: #aaa; font-size: 14px; }
.footer-col a:hover { color: #fff; }
.footer-note { width: 100%; margin-top: 30px; padding-top: 20px; border-top: 1px solid #333; color: #888; font-size: 13px; }
.footer-note a { color: #aaa; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hero-title { font-size: 28px; }
  .hero { padding: 48px 0 40px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: 1fr; }
  .stats-inner { gap: 30px; }
  .main-nav { gap: 12px; font-size: 14px; }
  .section-title { font-size: 24px; }
}
@media (max-width: 480px) {
  .feature-grid { grid-template-columns: 1fr; }
  .header-inner { gap: 14px; }
  .main-nav a:nth-child(1), .main-nav a:nth-child(2) { display: none; }
}

/* ===== Card 'read more' ===== */
.card-more { color: #7c5cff; font-size: 13px; font-weight: 600; }
.news-item .news-meta { color: #888; font-size: 12px; }

/* ===== About page ===== */
.about-content { max-width: 780px; }
.about-cta { margin-top: 40px; }