:root {
  --bg: #f4f8fc;
  --bg-soft: #ffffff;
  --panel: #ffffff;
  --text: #12324d;
  --muted: #5f7489;
  --line: rgba(18, 50, 77, 0.1);
  --primary: #1687d9;
  --primary-2: #36b2f0;
  --accent: #2fbf71;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(180deg, #f7fbff 0%, #eef5fb 55%, #f5f8fc 100%);
  color: var(--text);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.narrow { max-width: 860px; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,0.88);
  border-bottom: 1px solid var(--line);
}
.nav {
  min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand {
  display: flex; align-items: center; gap: 14px; min-width: 0;
}
.brand-logo {
  width: 64px; height: 51px; object-fit: contain; border-radius: 10px; background: #fff;
}
.brand-text {
  display: flex; flex-direction: column; line-height: 1.2;
}
.brand-text strong { font-size: 17px; }
.brand-text span { color: var(--muted); font-size: 12px; letter-spacing: .12em; }
nav { display: flex; gap: 22px; flex-wrap: wrap; }
nav a { color: var(--muted); font-weight: 500; }
nav a:hover { color: var(--text); }
nav a.nav-cta {
  padding: 8px 14px; border-radius: 999px; background: rgba(22, 135, 217, 0.08);
  border: 1px solid rgba(22, 135, 217, 0.14); color: var(--primary);
}
.hero { padding: 92px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.35fr 0.85fr; gap: 28px; align-items: center; }
.hero h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1.08; margin: 0 0 18px; }
.subtitle { font-size: 18px; color: var(--muted); max-width: 760px; }
.eyebrow { color: var(--accent); font-weight: 800; text-transform: uppercase; letter-spacing: .12em; font-size: 13px; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-width: 132px;
  padding: 13px 20px; border-radius: 999px; font-weight: 700; border: 1px solid transparent;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: white; }
.btn-secondary { border-color: var(--line); background: rgba(255,255,255,0.75); }
.hero-card, .card, .case-card, .contact-box {
  background: var(--panel); border: 1px solid var(--line); border-radius: 24px;
  box-shadow: 0 16px 40px rgba(19, 62, 100, 0.08);
}
.hero-card { padding: 28px; }
.hero-card h3 { margin-top: 0; }
.hero-card ul { margin: 0; padding-left: 18px; color: var(--muted); }
.section { padding: 72px 0; }
.section.alt { background: rgba(255,255,255,0.48); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section h2 { margin: 0 0 14px; font-size: clamp(28px, 4vw, 42px); }
.section p { color: var(--muted); }
.section-head {
  display: flex; align-items: end; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.cards { display: grid; gap: 20px; margin-top: 26px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card, .case-card { padding: 24px; }
.case-card span { color: var(--accent); font-weight: 700; font-size: 13px; }
.brand-wall-section {
  background: linear-gradient(180deg, rgba(22,135,217,0.04), rgba(255,255,255,0));
}
.brand-wall {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-top: 28px;
}
.brand-wall.compact { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.brand-pill {
  display: flex; align-items: center; justify-content: center; min-height: 78px; padding: 18px 16px;
  border-radius: 22px; background: rgba(255,255,255,0.9); border: 1px solid rgba(18,50,77,0.08);
  box-shadow: 0 14px 34px rgba(19, 62, 100, 0.06); font-weight: 800; color: var(--text); text-align: center;
}
.brand-feature-grid,
.resource-grid {
  display: grid; gap: 20px; margin-top: 24px;
}
.brand-feature-grid { grid-template-columns: repeat(3, 1fr); }
.resource-grid.three-col { grid-template-columns: repeat(3, 1fr); }
.resource-grid.two-col { grid-template-columns: repeat(2, 1fr); }
.brand-feature-card,
.resource-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 24px; padding: 24px;
  box-shadow: 0 16px 40px rgba(19, 62, 100, 0.08);
}
.brand-feature-card span { color: var(--accent); font-weight: 800; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.hero-inner { padding-bottom: 56px; }
.brand-directory-section { padding-top: 32px; }
.contact-section { padding-bottom: 96px; }
.contact-box {
  padding: 28px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 20px;
}
.contact-list { display: grid; gap: 12px; align-content: center; }
.site-footer { border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); }
.footer-inner { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
@media (max-width: 980px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0 16px;
    gap: 14px;
  }
  nav {
    gap: 12px;
    width: 100%;
  }
  .section-head { align-items: flex-start; }
}
@media (max-width: 900px) {
  .hero {
    padding: 56px 0 44px;
  }
  .hero-grid,
  .contact-box,
  .cards.three,
  .cards.two,
  .brand-feature-grid,
  .resource-grid.two-col,
  .resource-grid.three-col {
    grid-template-columns: 1fr;
  }
  .brand-wall,
  .brand-wall.compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .brand-text strong { font-size: 15px; }
  .hero-card,
  .card,
  .case-card,
  .contact-box,
  .brand-feature-card,
  .resource-card {
    padding: 22px;
  }
}
@media (max-width: 640px) {
  .container {
    width: min(var(--max), calc(100% - 24px));
  }
  .site-header {
    position: static;
  }
  .brand {
    align-items: flex-start;
    gap: 10px;
  }
  .brand-logo {
    width: 52px;
    height: 42px;
  }
  .brand-text {
    min-width: 0;
  }
  .brand-text strong {
    font-size: 14px;
    line-height: 1.35;
  }
  .brand-text span {
    font-size: 11px;
    letter-spacing: .08em;
    word-break: break-word;
  }
  nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 12px;
    text-align: center;
    border-radius: 14px;
    background: rgba(255,255,255,0.82);
    border: 1px solid var(--line);
  }
  nav a.nav-cta {
    background: rgba(22, 135, 217, 0.1);
  }
  .hero h1 {
    font-size: clamp(30px, 9vw, 42px);
    line-height: 1.16;
    margin-bottom: 14px;
  }
  .subtitle {
    font-size: 16px;
  }
  .hero-actions {
    gap: 10px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .btn {
    min-width: 0;
    padding: 12px 16px;
  }
  .section {
    padding: 52px 0;
  }
  .section h2 {
    font-size: clamp(24px, 7vw, 32px);
  }
  .section p,
  .card p,
  .case-card p,
  .resource-card p,
  .brand-feature-card p,
  .contact-box p {
    font-size: 15px;
  }
  .hero-card,
  .card,
  .case-card,
  .contact-box,
  .brand-feature-card,
  .resource-card {
    border-radius: 20px;
    padding: 18px;
  }
  .contact-box {
    gap: 16px;
  }
  .contact-list {
    gap: 10px;
  }
  .contact-list > div {
    overflow-wrap: anywhere;
    word-break: break-word;
  }
  .footer-inner {
    flex-direction: column;
    gap: 8px;
  }
}
@media (max-width: 560px) {
  .brand-wall,
  .brand-wall.compact {
    grid-template-columns: 1fr;
  }
  .brand-pill {
    min-height: 64px;
    padding: 14px 12px;
    border-radius: 18px;
    font-size: 15px;
  }
}