* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --bg: #0d0d0f;
    --ink: #ffffff;
    --muted: #9a9aa0;
    --line: #232329;
    --card: #141418;
    --thumb: #1a1a20;
}
html { scroll-behavior: smooth; }
body {
    font-family: "Lato", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

/* 导航 */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 18px 34px;
    background: rgba(13,13,15,0.92);
    color: #fff;
}
.nav .logo { display: flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: 2px; font-size: 16px; }
.nav .logo img { height: 48px; width: auto; display: block; }
.nav ul { display: flex; gap: 22px; list-style: none; align-items: center; }
.nav ul a { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: #bbb; }
.nav ul a:hover, .nav ul a.active { color: #fff; }

/* 下拉 */
.has-drop { position: relative; }
.has-drop .drop {
    position: absolute; top: 100%; left: 0; padding-top: 12px;
    display: none; min-width: 160px;
}
.has-drop:hover .drop { display: block; }
.has-drop .drop ul { display: block; background: #141418; border: 1px solid var(--line); padding: 8px 0; }
.has-drop .drop ul a { display: block; padding: 8px 16px; font-size: 11px; letter-spacing: 1px; color: #ccc; }
.has-drop .drop ul a:hover { color: #fff; background: #1d1d22; }

/* 通用 */
section { padding: 110px 40px; }
.wrap { max-width: 1160px; margin: 0 auto; }
.eyebrow { font-size: 11px; letter-spacing: 4px; text-transform: uppercase; color: #777; margin-bottom: 30px; }
h2.title {
    font-size: clamp(26px, 4.5vw, 52px);
    font-weight: 400; letter-spacing: -0.01em; line-height: 1.15;
}
.lead {
    font-size: clamp(18px, 2.6vw, 28px);
    font-weight: 300; line-height: 1.6; color: #d6d6da;
}
.page-head { padding-top: 160px; padding-bottom: 60px; text-align: center; }

/* Hero */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    text-align: center; padding-top: 90px;
}
.hero h1 {
    font-size: clamp(30px, 5.5vw, 64px);
    font-weight: 300; letter-spacing: 0.04em; line-height: 1.12;
    text-transform: uppercase; max-width: 20em; margin: 0 auto;
}

/* NEWS */
.news .card {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
    background: var(--card); padding: 50px; border: 1px solid var(--line);
}
.news .thumb { aspect-ratio: 16/9; background: var(--thumb); }
.news h3 { font-size: 30px; font-weight: 400; margin-bottom: 10px; }
.news .readmore { display: inline-block; margin-top: 22px; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; border-bottom: 1px solid #fff; padding-bottom: 3px; }

/* 分类卡片网格 */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.tile { border: 1px solid var(--line); background: var(--card); }
.tile .thumb { aspect-ratio: 16/9; background: var(--thumb); }
.tile .body { padding: 28px 30px; display: flex; justify-content: space-between; align-items: center; }
.tile h3 { font-size: 22px; font-weight: 400; letter-spacing: 1px; }
.tile .view { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; border-bottom: 1px solid #fff; padding-bottom: 2px; }

/* 关于 */
.about { background: var(--card); }
.about .heroimg { aspect-ratio: 16/9; background: var(--thumb); margin: 40px 0; }

/* 联系 */
.contact .offices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 50px; }
.office h3 { font-size: 16px; font-weight: 700; margin-bottom: 14px; }
.office p { font-size: 14px; color: #c0c0c6; }
.office a { color: #fff; text-decoration: underline; }
.join { margin-top: 60px; padding-top: 40px; border-top: 1px solid var(--line); }
.join .note { font-size: 13px; color: #888; font-style: italic; }

/* 列表页条目 */
.list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 40px; }
.list-item .thumb { aspect-ratio: 16/9; background: var(--thumb); }
.list-item .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.list-item h3 { font-size: 18px; font-weight: 400; margin-top: 16px; letter-spacing: 1px; }
.list-item p { font-size: 13px; color: #888; margin-top: 6px; }

/* 资讯详情页头图 */
.article-heroimg { max-width: 860px; margin: 0 auto 20px; }
.article-heroimg img { width: 100%; height: auto; display: block; border-radius: 4px; }

/* 页脚 */
footer { background: #09090b; color: #777; padding: 60px 40px; border-top: 1px solid var(--line); }
footer .links { display: flex; flex-wrap: wrap; gap: 14px; list-style: none; margin-bottom: 30px; }
footer .links a { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: #999; }
footer .credit { font-size: 12px; color: #666; }

@media (max-width: 760px) {
    .grid2, .grid3, .news .card, .contact .offices, .list-grid { grid-template-columns: 1fr; }
    .nav ul { display: none; }
    section { padding: 80px 24px; }
}