/* 新領海知識庫 — 產品介紹頁 */
@import url('../../brand-tokens.css');

:root {
  --kb-primary: #2563eb;
  --kb-primary-dark: #1e40af;
  --kb-bg: #f8fafc;
  --kb-card: #ffffff;
  --kb-text: #0f172a;
  --kb-muted: #64748b;
  --kb-border: #e2e8f0;
  --kb-radius: 14px;
  --kb-max: 1180px;
  --kb-nav: 72px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--kb-nav); }

body {
  font-family: "Noto Sans TC", -apple-system, BlinkMacSystemFont, "PingFang TC", sans-serif;
  color: var(--kb-text);
  background: var(--kb-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: var(--kb-max); margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }

.kb-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--kb-border);
}

.kb-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--kb-nav);
  gap: 1rem;
}

.kb-logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-weight: 700;
  color: var(--kb-text);
  text-decoration: none;
}

.kb-logo img { width: 40px; height: 40px; border-radius: 10px; }

.kb-logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.kb-logo-text small { font-size: .7rem; color: var(--kb-muted); font-weight: 600; }
.kb-logo-text strong { font-size: 1rem; color: var(--kb-primary); }

.kb-nav { display: flex; gap: .5rem; flex-wrap: wrap; }
.kb-nav a {
  padding: .45rem .85rem;
  border-radius: 8px;
  font-size: .9rem;
  color: var(--kb-text);
  text-decoration: none;
}
.kb-nav a:hover { background: #eff6ff; text-decoration: none; }

.kb-hero {
  padding: calc(var(--kb-nav) + 2rem) 0 3rem;
  background: linear-gradient(160deg, #0f172a 0%, #1e3a8a 55%, #2563eb 100%);
  color: #fff;
}

.kb-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .kb-hero-grid { grid-template-columns: 1fr 1.1fr; }
}

.kb-eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #93c5fd;
  margin-bottom: .75rem;
}

.kb-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.kb-hero-lead {
  font-size: 1.05rem;
  color: #dbeafe;
  margin-bottom: 1.25rem;
  max-width: 36rem;
}

.kb-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.5rem;
}

.kb-tech-tags span {
  font-size: .8rem;
  padding: .35rem .7rem;
  border-radius: 999px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
}

.kb-hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; }

.kb-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.25rem;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: .95rem;
}

.kb-btn-primary { background: #fff; color: var(--kb-primary-dark); }
.kb-btn-primary:hover { background: #eff6ff; text-decoration: none; }
.kb-btn-secondary { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.45); }
.kb-btn-secondary:hover { background: rgba(255,255,255,.1); text-decoration: none; }

.kb-hero-shot {
  border-radius: var(--kb-radius);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.15);
}

.kb-hero-shot img { display: block; width: 100%; height: auto; }

.kb-section { padding: 3.5rem 0; }
.kb-section--alt { background: #fff; }

.kb-section-header { text-align: center; max-width: 42rem; margin: 0 auto 2.5rem; }
.kb-section-header h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin-bottom: .5rem; color: var(--kb-primary-dark); }
.kb-section-header p { color: var(--kb-muted); }

.kb-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.kb-feature {
  background: var(--kb-card);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  padding: 1.25rem;
  box-shadow: 0 4px 20px rgba(15,23,42,.04);
}

.kb-feature i {
  font-size: 1.35rem;
  color: var(--kb-primary);
  margin-bottom: .75rem;
}

.kb-feature h3 { font-size: 1.05rem; margin-bottom: .4rem; }
.kb-feature p { font-size: .92rem; color: var(--kb-muted); }

.kb-screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.kb-shot-card {
  background: var(--kb-card);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  overflow: hidden;
}

.kb-shot-card img { width: 100%; display: block; aspect-ratio: 16/10; object-fit: contain; object-position: top center; background: #f1f5f9; }
.kb-shot-card figcaption { padding: .85rem 1rem; font-size: .9rem; color: var(--kb-muted); }

.kb-arch {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.kb-arch-item {
  text-align: center;
  padding: 1.25rem;
  border-radius: var(--kb-radius);
  background: #eff6ff;
  border: 1px solid #bfdbfe;
}

.kb-arch-item strong { display: block; font-size: 1rem; margin-bottom: .35rem; color: var(--kb-primary-dark); }
.kb-arch-item span { font-size: .85rem; color: var(--kb-muted); }

.kb-demo {
  background: linear-gradient(135deg, #eff6ff, #f8fafc);
  border: 1px solid #bfdbfe;
  border-radius: var(--kb-radius);
  padding: clamp(1.25rem, 3vw, 2rem);
}

.kb-demo h2 { font-size: 1.35rem; margin-bottom: .5rem; color: var(--kb-primary-dark); }
.kb-demo-lead { color: var(--kb-muted); margin-bottom: 1.25rem; }

.kb-demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.kb-demo-box {
  background: #fff;
  border: 1px solid var(--kb-border);
  border-radius: 12px;
  padding: 1rem 1.15rem;
}

.kb-demo-box h3 { font-size: .95rem; margin-bottom: .5rem; }
.kb-demo-box p, .kb-demo-box li { font-size: .9rem; color: var(--kb-muted); }
.kb-demo-box ul { padding-left: 1.1rem; margin-top: .35rem; }

.kb-demo-box code {
  font-family: Menlo, Monaco, Consolas, monospace;
  background: #f1f5f9;
  padding: .15rem .4rem;
  border-radius: 4px;
  font-size: .85rem;
}

.kb-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 2.5rem 0 1.5rem;
  margin-top: 2rem;
}

.kb-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.kb-footer h4 { color: #f8fafc; margin-bottom: .75rem; font-size: .95rem; }
.kb-footer ul { list-style: none; }
.kb-footer li { margin-bottom: .4rem; }
.kb-footer a { color: #93c5fd; text-decoration: none; }
.kb-footer a:hover { text-decoration: underline; }
.kb-footer-bottom { border-top: 1px solid #334155; padding-top: 1rem; font-size: .85rem; text-align: center; }