:root {
  --ink: #111111;
  --muted: #6b6b6b;
  --line: #e5e2dc;
  --paper: #fbfaf7;
  --paper-2: #ffffff;
  --accent: #1b1b1b;
  --radius: 10px;
  --font-title: "Playfair Display", "Noto Sans SC", serif;
  --font-strong: "Oswald", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-body); background: radial-gradient(circle at 10% 0%, #ffffff 0%, #f6f3ef 45%, #f1eee8 100%); color: var(--ink); line-height: 1.75; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.site-header { position: sticky; top: 0; z-index: 2000; background: rgba(251,250,247,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.ticker { border-bottom: 1px solid var(--line); padding: 10px 0; background: var(--paper-2); }
.ticker-track { display: inline-flex; gap: 20px; padding-left: 20px; white-space: nowrap; color: var(--muted); font-size: .85rem; animation: ticker 22s linear infinite; }

@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.nav { width: min(1260px, 92vw); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-title { font-family: var(--font-strong); font-size: 1.1rem; letter-spacing: .03em; }
.brand-sub { display: block; font-size: .8rem; color: var(--muted); }
.nav-toggle { display: none; flex-direction: column; gap: 6px; border: none; background: none; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); }
.nav-overlay { display: none; }
.nav-menu { list-style: none; display: flex; gap: 20px; font-weight: 600; font-size: .9rem; }
.nav-menu-head { display: none; }
.nav-menu-title { font-weight: 700; }
.nav-close { border: none; width: 32px; height: 32px; border-radius: 8px; background: rgba(17,24,39,.08); font-size: 1.1rem; }

.hero { border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(17,17,17,0.06), transparent 60%); pointer-events: none; }
.hero-inner { width: min(1260px, 92vw); margin: 0 auto; padding: 70px 0 50px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; }
.hero-tag { display: inline-block; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; font-size: .82rem; color: var(--muted); }
.hero h1 { font-family: var(--font-title); font-size: clamp(2.1rem, 3vw, 3.2rem); margin: 12px 0; }
.hero-actions { display: flex; gap: 12px; margin-top: 16px; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 18px; border-radius: 999px; border: 1px solid var(--ink); font-weight: 600; background: transparent; }
.btn.primary { background: var(--ink); color: #fff; }
.hero-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: var(--paper-2); }
.hero-card-top { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 10px; }
.chip { padding: 2px 10px; border-radius: 999px; border: 1px solid var(--line); font-size: .75rem; color: var(--muted); }
.hero-list { list-style: none; display: grid; gap: 10px; font-size: .95rem; }
.hero-list span { display: inline-block; width: 96px; color: var(--muted); font-size: .8rem; }

.section { width: min(1260px, 92vw); margin: 0 auto; padding: 60px 0; }
.section.light { background: var(--paper-2); width: 100%; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.section-head h2::after { content: ""; display: block; width: 56px; height: 2px; background: var(--ink); margin-top: 8px; }
.section-head h2 { font-family: var(--font-title); font-size: clamp(1.7rem, 2.4vw, 2.4rem); }
.keyword-line { color: var(--muted); font-size: .95rem; }

.news-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 20px; }
.lead-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--paper-2); box-shadow: 0 12px 30px rgba(0,0,0,.06); }
.lead-card img { height: 240px; width: 100%; object-fit: cover; }
.lead-card .tag { display: inline-block; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; font-size: .75rem; color: var(--muted); }
.lead-card > div { padding: 14px; display: grid; gap: 8px; }
.news-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; background: var(--paper-2); display: grid; gap: 10px; transition: transform .2s ease, box-shadow .2s ease; }
.news-card:hover { transform: translateY(-4px); box-shadow: 0 18px 36px rgba(0,0,0,.08); }
.news-card img { height: 150px; object-fit: cover; border-radius: 8px; }

.download-grid { width: min(1260px, 92vw); margin: 0 auto; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.download-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: var(--paper-2); box-shadow: 0 12px 24px rgba(0,0,0,.05); }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.dense-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.articles-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }

.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-2); }
.faq-question { width: 100%; text-align: left; padding: 14px 16px; background: none; border: none; font-weight: 600; cursor: pointer; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; padding: 0 16px; }
.faq-item.active .faq-answer { max-height: 200px; padding-bottom: 12px; }

.footer { border-top: 1px solid var(--line); padding: 36px 0 28px; width: min(1260px, 92vw); margin: 0 auto; }
.footer-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; }
.footer-meta { margin-top: 16px; display: flex; gap: 14px; flex-wrap: wrap; font-size: .9rem; color: var(--muted); }

.float-kf { position: fixed; left: 18px; right: auto; bottom: 90px; padding: 10px 16px; border-radius: 999px; font-weight: 700; background: #111; color: #fff; box-shadow: 0 12px 24px rgba(0,0,0,.15); display: inline-flex !important; pointer-events: auto; z-index: 2100; }

@media (max-width: 1100px) {
  .hero-inner { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .dense-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .articles-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .download-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-menu { position: fixed; top: 0; right: 0; height: 100vh; width: min(320px, 80vw); background: var(--paper); flex-direction: column; align-items: flex-start; padding: 90px 24px 24px; gap: 16px; transform: translateX(100%); transition: .2s ease; z-index: 2100; border-left: 1px solid var(--line); }
  .nav-menu.active { transform: translateX(0); }
  .nav-menu-head { display: flex; align-items: center; justify-content: space-between; width: 100%; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
  .nav-overlay { display: block; position: fixed; inset: 0; background: rgba(15,17,21,.2); opacity: 0; pointer-events: none; transition: .2s ease; z-index: 2000; }
  .nav-overlay.active { opacity: 1; pointer-events: auto; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .news-grid, .grid-4, .dense-grid, .articles-grid { grid-template-columns: 1fr; }
  .float-kf { left: 14px; right: auto; bottom: calc(80px + env(safe-area-inset-bottom, 0px)); display: inline-flex !important; }
}