/* ================================================
   HWiNFO 中文网 · 浅色编辑排版风
   ================================================ */
:root {
    --bg: #fbfbf9;
    --ink: #17181a;
    --ink-2: #4b4f55;
    --ink-3: #8a8f96;
    --line: #e3e2dd;
    --line-dark: #17181a;
    --accent: #0f52c7;
    --accent-ink: #0b3e96;
    --paper: #ffffff;
    --maxw: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--ink);
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.9;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 顶部导航 ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg);
    border-bottom: 1px solid var(--line-dark);
}

.nav-wrap {
    display: flex;
    align-items: center;
    gap: 40px;
    height: 64px;
}

.brand { flex-shrink: 0; }
.brand img { height: 36px; width: auto; }

.main-nav { display: flex; gap: 28px; flex: 1; }

.main-nav a {
    color: var(--ink);
    font-size: 15px;
}

.main-nav a:hover { color: var(--accent); text-decoration: none; }

.nav-cta {
    padding: 8px 20px;
    background: var(--ink);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
}

.nav-cta:hover { background: var(--accent); color: #fff; text-decoration: none; }

/* ---------- 首屏 ---------- */
.hero {
    border-bottom: 1px solid var(--line);
    padding: 64px 0 72px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
}

h1 {
    font-size: clamp(26px, 3vw, 36px);
    line-height: 1.45;
    font-weight: 800;
    letter-spacing: 0.3px;
    margin-bottom: 18px;
}

.lead {
    font-size: 16.5px;
    color: var(--ink-2);
    margin-bottom: 28px;
}

/* 元信息 */
.meta-list {
    display: grid;
    grid-template-columns: repeat(4, auto);
    justify-content: start;
    gap: 8px 36px;
    border-top: 1px solid var(--line-dark);
    border-bottom: 1px solid var(--line);
    padding: 14px 0;
    margin-bottom: 26px;
}

.meta-list dt {
    font-size: 12px;
    color: var(--ink-3);
    letter-spacing: 1px;
}

.meta-list dd {
    font-size: 15px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* 下载区 */
.dl-title {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--ink-3);
    margin-bottom: 12px;
}

.dl-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
    display: inline-block;
    padding: 12px 26px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 4px;
    transition: background 0.15s, color 0.15s;
}

.btn:hover { text-decoration: none; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); color: #fff; }

.btn-outline {
    border: 1.5px solid var(--ink);
    color: var(--ink);
    background: transparent;
}

.btn-outline:hover { background: var(--ink); color: #fff; }

.dl-note {
    margin-top: 14px;
    font-size: 13px;
    color: var(--ink-3);
}

.hero-figure img {
    border: 1px solid var(--line);
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(20, 22, 26, 0.08);
}

figcaption {
    margin-top: 10px;
    font-size: 13px;
    color: var(--ink-3);
}

/* ---------- 通用 Section ---------- */
.section {
    padding: 64px 0;
    border-bottom: 1px solid var(--line);
}

.kicker {
    font-size: 13px;
    letter-spacing: 2px;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 10px;
}

h2 {
    font-size: clamp(22px, 2.4vw, 30px);
    font-weight: 800;
    margin-bottom: 22px;
}

h3 {
    font-size: 17.5px;
    font-weight: 700;
    margin-bottom: 10px;
}

h4 {
    font-size: 16px;
    font-weight: 700;
    margin: 20px 0 4px;
    padding-left: 14px;
    border-left: 3px solid var(--accent);
    line-height: 1.5;
}

.prose { max-width: 760px; color: var(--ink-2); }

/* ---------- 功能三栏 ---------- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin-top: 8px;
}

.feature-grid article {
    padding: 22px 28px 6px 0;
    border-top: 2px solid var(--ink);
    margin-right: 28px;
}

.feature-grid article:last-child { margin-right: 0; }

.feature-grid p { font-size: 15px; color: var(--ink-2); }

/* ---------- 配图 ---------- */
.section-figure { margin-top: 44px; }

.section-figure img,
.latest-grid figure img {
    border: 1px solid var(--line);
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(20, 22, 26, 0.08);
}

/* ---------- 下载表格 ---------- */
.dl-table {
    width: 100%;
    margin-top: 26px;
    border-collapse: collapse;
    font-size: 15px;
    background: var(--paper);
    border: 1px solid var(--line);
}

.dl-table th {
    text-align: left;
    padding: 12px 18px;
    background: var(--ink);
    color: #fff;
    font-size: 13.5px;
    font-weight: 600;
    letter-spacing: 1px;
}

.dl-table td {
    padding: 15px 18px;
    border-top: 1px solid var(--line);
    color: var(--ink-2);
    vertical-align: middle;
}

.dl-table td strong { color: var(--ink); }

.dl-table td a { font-weight: 600; white-space: nowrap; }

.rec {
    display: inline-block;
    margin-left: 8px;
    padding: 1px 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 3px;
    vertical-align: 1px;
}

/* ---------- 更新日志 ---------- */
.latest-grid {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 52px;
    align-items: center;
}

.latest-copy p { font-size: 15px; color: var(--ink-2); padding-left: 17px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; }

.faq-list details {
    border-bottom: 1px solid var(--line);
}

.faq-list details:first-of-type { border-top: 2px solid var(--ink); }

.faq-list summary {
    cursor: pointer;
    padding: 18px 0;
    list-style: none;
    display: flex;
    align-items: baseline;
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list summary::before {
    content: "问";
    flex-shrink: 0;
    margin-right: 14px;
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 3px;
    padding: 0 6px;
    line-height: 1.6;
}

.faq-list summary h3 { margin: 0; font-size: 16.5px; }

.faq-list details p {
    padding: 0 0 20px 44px;
    font-size: 15px;
    color: var(--ink-2);
}

/* ---------- 页脚 ---------- */
.site-footer {
    padding: 48px 0 0;
    background: var(--bg);
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    flex-wrap: wrap;
}

.footer-grid p {
    margin-top: 12px;
    font-size: 14px;
    color: var(--ink-3);
    max-width: 340px;
}

.footer-grid nav { display: flex; gap: 26px; flex-wrap: wrap; }

.footer-grid nav a { color: var(--ink-2); font-size: 14px; }
.footer-grid nav a:hover { color: var(--accent); }

.copyright {
    margin-top: 36px;
    padding: 18px 24px;
    border-top: 1px solid var(--line);
}

.copyright p { font-size: 13px; color: var(--ink-3); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
    .hero-grid, .latest-grid { grid-template-columns: 1fr; gap: 36px; }
    .feature-grid { grid-template-columns: 1fr; }
    .feature-grid article { margin-right: 0; padding-right: 0; }
    .main-nav { display: none; }
    .meta-list { grid-template-columns: repeat(2, auto); }
    .hero { padding: 44px 0 52px; }
    .section { padding: 48px 0; }
    .dl-table { display: block; overflow-x: auto; }
}