:root { --accent: #2563eb; --ink: #1e293b; --sub: #64748b; --line: #e2e8f0; --bg: #f5f8fc; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; color: var(--ink); background: var(--bg); font-size: 15px; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.main { min-height: 60vh; padding-bottom: 40px; }

/* header */
.hd { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.hd-in { display: flex; align-items: center; gap: 22px; height: 62px; }
.logo { display: flex; align-items: center; gap: 9px; font-size: 19px; }
.logo-mark { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 8px; color: #fff; font-size: 17px; }
.nav { display: flex; gap: 4px; }
.nav a { padding: 7px 13px; border-radius: 8px; color: var(--sub); font-size: 14.5px; }
.nav a.on, .nav a:hover { color: var(--accent); background: #eff5ff; }
.sbox { margin-left: auto; display: flex; }
.sbox input { border: 1px solid var(--line); border-right: 0; border-radius: 8px 0 0 8px; padding: 7px 12px; width: 190px; font-size: 13.5px; outline: none; }
.sbox button { border: 0; background: var(--accent); color: #fff; border-radius: 0 8px 8px 0; padding: 0 16px; cursor: pointer; font-size: 13.5px; }
@media (max-width: 820px) { .sbox { display: none; } .nav { overflow-x: auto; } }

/* hero */
.hero { text-align: center; padding: 40px 16px 30px; }
.hero h1 { font-size: 30px; letter-spacing: 1px; }
.hero p { color: var(--sub); margin-top: 8px; }
.stats { display: flex; justify-content: center; gap: 40px; margin-top: 22px; }
.stat b { font-size: 26px; color: var(--accent); display: block; }
.stat span { color: var(--sub); font-size: 13px; }

/* blocks */
.block { margin-top: 26px; }
.bt { font-size: 19px; padding-bottom: 10px; border-bottom: 2px solid var(--accent); display: inline-block; position: relative; width: 100%; }
.bt .more { float: right; font-size: 13.5px; color: var(--sub); font-weight: normal; padding-top: 5px; }
.bt-lg { font-size: 22px; margin-bottom: 16px; padding-left: 10px; border-left: 4px solid var(--accent); }
.crumb { color: var(--sub); font-size: 13px; padding: 16px 0 0; }
.crumb a:hover { color: var(--accent); }

/* tags */
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.tag { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: 13.5px; }
.tag:hover { border-color: var(--accent); color: var(--accent); }
.tag i { font-style: normal; color: var(--sub); font-size: 12px; margin-left: 4px; }

/* cards & rows */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 14px; }
@media (max-width: 820px) { .grid { grid-template-columns: 1fr; } }
.card, .row { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; transition: box-shadow .15s; }
.card:hover { box-shadow: 0 4px 14px rgba(30, 64, 175, .08); }
.card h3, .row h3 { font-size: 15.5px; line-height: 1.5; }
.card h3 a:hover, .row h3 a:hover { color: var(--accent); }
.excerpt { color: var(--sub); font-size: 13.5px; margin-top: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.meta { display: flex; align-items: center; gap: 12px; margin-top: 10px; font-size: 12.5px; color: var(--sub); flex-wrap: wrap; }
.meta .co { color: var(--accent); }
.meta .ind { background: #eef4ff; color: var(--accent); border-radius: 4px; padding: 1px 8px; }
.rows { display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
.row { padding: 16px 20px; }

/* detail */
.detail { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 28px 30px; margin-top: 14px; }
.detail h1 { font-size: 24px; line-height: 1.45; }
.d-meta { color: var(--sub); font-size: 13px; margin: 12px 0 4px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.d-meta a { color: var(--accent); }
.d-body { margin-top: 18px; font-size: 15.5px; }
.d-body p { margin: 12px 0; }
.d-body h2, .d-body h3, .d-body h4 { margin: 20px 0 10px; }
.d-body img { max-width: 100%; height: auto; border-radius: 6px; }
.d-body table { border-collapse: collapse; width: 100%; margin: 14px 0; }
.d-body th, .d-body td, .specs th, .specs td { border: 1px solid var(--line); padding: 8px 12px; font-size: 14px; }
.specs { width: 100%; border-collapse: collapse; margin: 18px 0 6px; }
.specs caption { text-align: left; font-weight: bold; padding-bottom: 8px; }
.specs th { width: 160px; background: #f8fafc; text-align: right; }
.d-foot { margin-top: 26px; padding-top: 14px; border-top: 1px dashed var(--line); color: var(--sub); font-size: 13px; }

/* companies */
.co-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 14px; }
@media (max-width: 820px) { .co-grid { grid-template-columns: repeat(2, 1fr); } }
.co-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; display: flex; flex-direction: column; gap: 4px; }
.co-card:hover { border-color: var(--accent); box-shadow: 0 4px 14px rgba(30, 64, 175, .08); }
.co-card b { font-size: 14.5px; line-height: 1.4; }
.co-card span { color: var(--sub); font-size: 12.5px; }

/* related */
.rel { list-style: none; margin-top: 12px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 6px 0; }
.rel li { display: flex; justify-content: space-between; padding: 9px 18px; border-bottom: 1px dashed var(--line); font-size: 14px; }
.rel li:last-child { border-bottom: 0; }
.rel li a:hover { color: var(--accent); }
.rel li span { color: var(--sub); font-size: 12.5px; }

/* pager */
.pager { display: flex; gap: 8px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }
.pager a, .pager .cur { min-width: 34px; text-align: center; padding: 6px 10px; background: #fff; border: 1px solid var(--line); border-radius: 8px; font-size: 13.5px; }
.pager .cur { background: var(--accent); color: #fff; border-color: var(--accent); }
.pager a:hover { border-color: var(--accent); color: var(--accent); }

/* misc */
.empty { background: #fff; border: 1px dashed var(--line); border-radius: 10px; text-align: center; color: var(--sub); padding: 40px; margin-top: 14px; }
.btn-p { display: inline-block; color: #fff; border-radius: 8px; padding: 9px 22px; }

/* footer */
.ft { background: #fff; border-top: 1px solid var(--line); margin-top: 40px; padding: 28px 0; }
.ft-brand b { font-size: 17px; }
.ft-brand span { color: var(--sub); font-size: 13px; margin-left: 12px; }
.ft-links { margin-top: 10px; display: flex; gap: 18px; }
.ft-links a { color: var(--sub); font-size: 13.5px; }
.ft-links a:hover { color: var(--accent); }
.ft-copy { color: #94a3b8; font-size: 12.5px; margin-top: 10px; }