@charset "UTF-8";
/* ==========================================================================
   001 — V10 官网主题（白色极简）
   设计原则：白底、黑字、1px 细线分区；不用渐变/阴影堆叠/发光/大圆角；
   字号与行距承担层级，强调色仅用于极小面积的状态提示。
   ========================================================================== */

:root {
  --ink: #14161a;
  --ink-2: #3d4148;
  --ink-3: #6d7278;
  --ink-4: #9aa0a6;
  --line: #e8e8e4;
  --line-2: #d8d8d2;
  --paper: #ffffff;
  --paper-2: #fafaf8;
  --paper-3: #f4f4f0;
  --accent: #b34a2c;
  --accent-soft: #f7efe9;
  --ok: #2f6b4f;

  --wrap: 1200px;
  --radius: 3px;

  --fs-h1: clamp(30px, 4.2vw, 54px);
  --fs-h2: clamp(22px, 2.4vw, 30px);
  --fs-h3: 18px;
  --fs-body: 15px;
  --fs-sm: 13px;
  --fs-xs: 12px;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; line-height: 1.3; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
::selection { background: var(--ink); color: #fff; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

/* 可访问性：仅键盘可见的焦点环 */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 10px 16px; z-index: 99;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ============================ 顶部 ============================ */
.site-head {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.head-inner {
  display: flex; align-items: center; gap: 28px;
  height: 66px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand:hover { color: inherit; }
.brand-logo { height: 26px; width: auto; max-width: 168px; object-fit: contain; }
.brand-mark {
  width: 18px; height: 18px; background: var(--ink);
  display: inline-block; border-radius: 2px;
  position: relative;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 5px 5px auto auto;
  width: 6px; height: 6px; background: #fff;
}
.brand-text { font-size: 16px; font-weight: 600; letter-spacing: 0.01em; }

.head-nav { display: flex; align-items: center; gap: 26px; margin-left: 8px; }
.nav-link {
  position: relative; font-size: 14px; color: var(--ink-2);
  padding: 4px 0; white-space: nowrap;
}
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--ink); transform: scaleX(0);
  transform-origin: left; transition: transform 0.25s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-link.is-static { color: var(--ink-4); cursor: default; }
.nav-link.is-static::after { display: none; }

.head-act { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.link-quiet { font-size: 13px; color: var(--ink-3); }
.link-quiet:hover { color: var(--ink); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 34px; padding: 0 14px; border-radius: var(--radius);
  font-size: 13px; line-height: 1; white-space: nowrap;
  border: 1px solid transparent; cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn-solid { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-solid:hover { background: #000; color: #fff; }
.btn-line { border-color: var(--line-2); color: var(--ink); background: transparent; }
.btn-line:hover { border-color: var(--ink); color: var(--ink); }
.btn-lg { height: 42px; padding: 0 22px; font-size: 14px; }

.nav-burger {
  display: none; width: 34px; height: 34px; padding: 0;
  border: 1px solid var(--line-2); border-radius: var(--radius);
  background: #fff; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.nav-burger span { display: block; width: 14px; height: 1px; background: var(--ink); transition: transform 0.2s ease; }
.nav-burger[aria-expanded="true"] span:first-child { transform: translateY(2.5px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:last-child { transform: translateY(-2.5px) rotate(-45deg); }

/* ============================ 版式骨架 ============================ */
.section { padding: 76px 0; border-top: 1px solid var(--line); }
.section:first-of-type { border-top: 0; }
.section.tight { padding: 54px 0; }
.section.alt { background: var(--paper-2); }

.sec-head { max-width: 720px; margin-bottom: 40px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: block; font-size: var(--fs-xs); letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-4); margin-bottom: 14px;
  font-family: var(--mono);
}
.sec-head h2 { font-size: var(--fs-h2); margin-bottom: 12px; }
.sec-head p { color: var(--ink-3); font-size: 14.5px; max-width: 60ch; }
.sec-head.center p { margin: 0 auto; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.muted { color: var(--ink-3); }
.small { font-size: var(--fs-sm); }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ============================ 首屏 ============================ */
.hero { padding: 78px 0 0; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 64px; align-items: start;
}
.hero-note {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: 0.04em;
  padding: 5px 10px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--paper);
}
.hero-note i { width: 5px; height: 5px; border-radius: 50%; background: var(--ok); display: inline-block; }
.hero h1 { font-size: var(--fs-h1); margin: 22px 0 20px; letter-spacing: -0.02em; }
.hero h1 em { font-style: normal; color: var(--ink-4); }
.hero h1 .h1-line { display: block; }
@media (max-width: 560px) {
  .hero h1 .h1-line { display: inline; }
  .hero h1 em { display: block; margin-top: 4px; }
}
.hero-lead { font-size: 16px; color: var(--ink-3); max-width: 46ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-facts {
  margin-top: 40px; display: flex; flex-wrap: wrap; gap: 34px;
  padding-top: 24px; border-top: 1px solid var(--line);
}
.hero-fact b { display: block; font-size: 22px; font-weight: 600; letter-spacing: -0.01em; }
.hero-fact span { font-size: var(--fs-xs); color: var(--ink-4); letter-spacing: 0.04em; }

/* 首屏右侧：参数清单（替代插画） */
.spec {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper);
}
.spec-head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 16px 18px; border-bottom: 1px solid var(--line);
}
.spec-head b { font-size: 14px; font-weight: 600; }
.spec-head span { font-size: var(--fs-xs); color: var(--ink-4); font-family: var(--mono); }
.spec-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding: 12px 18px; border-bottom: 1px solid var(--line);
  font-size: var(--fs-sm);
}
.spec-row:last-child { border-bottom: 0; }
.spec-row dt { color: var(--ink-3); margin: 0; }
.spec-row dd { margin: 0; font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--ink); }
.spec-foot {
  padding: 14px 18px; border-top: 1px solid var(--line);
  background: var(--paper-2); font-size: var(--fs-xs); color: var(--ink-3);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.spec-foot a { color: var(--ink); border-bottom: 1px solid var(--line-2); }
.spec-foot a:hover { border-color: var(--accent); color: var(--accent); }

/* ============================ 入口列表 ============================ */
.entry-list { border-top: 1px solid var(--line); }
.entry {
  display: grid; grid-template-columns: 54px minmax(0, 1fr) 190px 24px;
  gap: 24px; align-items: center;
  padding: 24px 2px; border-bottom: 1px solid var(--line);
  transition: background-color 0.2s ease;
}
.entry:hover { background: var(--paper-2); color: inherit; }
.entry-idx { font-family: var(--mono); font-size: var(--fs-xs); color: var(--ink-4); }
.entry h3 { font-size: var(--fs-h3); margin-bottom: 4px; }
.entry p { font-size: var(--fs-sm); color: var(--ink-3); }
.entry-meta { font-size: var(--fs-xs); color: var(--ink-4); font-family: var(--mono); text-align: right; }
.entry-arrow { color: var(--ink-4); transition: transform 0.2s ease, color 0.2s ease; }
.entry:hover .entry-arrow { transform: translateX(4px); color: var(--ink); }

/* ============================ 产品表 ============================ */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; position: relative; }
.table {
  width: 100%; border-collapse: collapse; font-size: var(--fs-sm);
  min-width: 640px;
}
.table caption {
  text-align: left; font-size: var(--fs-xs); color: var(--ink-4);
  padding-bottom: 12px; font-family: var(--mono); letter-spacing: 0.04em;
}
.table th, .table td {
  text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.table thead th {
  font-size: var(--fs-xs); font-weight: 500; color: var(--ink-4);
  letter-spacing: 0.08em; text-transform: uppercase; border-bottom: 1px solid var(--line-2);
  white-space: nowrap;
}
.table tbody tr:hover { background: var(--paper-2); }
.table .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.table .price { font-size: 17px; font-weight: 600; white-space: nowrap; }
.table .price small { font-size: var(--fs-xs); font-weight: 400; color: var(--ink-4); margin-left: 2px; }
.table .buy { white-space: nowrap; }
.table .buy a { border-bottom: 1px solid var(--line-2); }
.table .buy a:hover { border-color: var(--accent); color: var(--accent); }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.chip {
  display: inline-flex; align-items: center; height: 30px; padding: 0 12px;
  border: 1px solid var(--line-2); border-radius: 999px;
  font-size: var(--fs-xs); color: var(--ink-3); background: #fff;
  cursor: pointer; transition: all 0.18s ease;
}
.chip:hover { border-color: var(--ink-3); color: var(--ink); }
.chip[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ============================ 能力/优势 ============================ */
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }

.feature {
  padding: 26px 26px 26px 0; border-top: 1px solid var(--line);
}
.feature:nth-child(1) { border-top: 0; }
.feature h4 { font-size: 15px; margin-bottom: 8px; }
.feature p { font-size: var(--fs-sm); color: var(--ink-3); }
.feature-no { font-family: var(--mono); font-size: var(--fs-xs); color: var(--ink-4); display: block; margin-bottom: 14px; }

.stat-row {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.stat { padding: 26px 24px 26px 0; }
.stat + .stat { padding-left: 24px; border-left: 1px solid var(--line); }
.stat b { display: block; font-size: clamp(24px, 3vw, 34px); font-weight: 600; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat span { font-size: var(--fs-xs); color: var(--ink-4); }

/* ============================ 列表（新闻/公告） ============================ */
.list-2col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 56px; }
.list-block h3 {
  font-size: 15px; display: flex; align-items: baseline; justify-content: space-between;
  padding-bottom: 12px; border-bottom: 1px solid var(--line-2); margin-bottom: 4px;
}
.list-block h3 a { font-size: var(--fs-xs); color: var(--ink-4); font-weight: 400; }
.list-block h3 a:hover { color: var(--accent); }
.news-list { min-height: 60px; }
.news-item {
  display: flex; align-items: baseline; gap: 16px; justify-content: space-between;
  padding: 13px 0; border-bottom: 1px solid var(--line);
}
.news-item a { flex: 1 1 auto; min-width: 0; font-size: 14px; color: var(--ink-2); }
.news-item a:hover { color: var(--accent); }
.news-item time { flex: 0 0 auto; font-size: var(--fs-xs); color: var(--ink-4); font-family: var(--mono); }
.news-item .ell { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list-empty { padding: 18px 0; font-size: var(--fs-sm); color: var(--ink-4); }

/* ============================ FAQ ============================ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 18px 2px; cursor: pointer; list-style: none; font-size: 15px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; font-family: var(--mono); color: var(--ink-4);
  font-size: 16px; line-height: 1; flex: 0 0 auto;
}
.faq details[open] summary::after { content: "−"; }
.faq .faq-body { padding: 0 40px 20px 2px; color: var(--ink-3); font-size: var(--fs-sm); }

/* ============================ CTA ============================ */
.cta {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 24px; padding: 44px 0;
}
.cta h2 { font-size: var(--fs-h2); margin-bottom: 8px; }
.cta p { color: var(--ink-3); font-size: var(--fs-sm); }

/* ============================ 页脚 ============================ */
.site-foot { border-top: 1px solid var(--line); padding: 56px 0 26px; background: var(--paper); }
.foot-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 60px; }
.brand-foot .brand-text { font-size: 15px; }
.foot-desc { margin-top: 14px; font-size: var(--fs-sm); color: var(--ink-3); max-width: 34ch; }
.foot-contact { margin-top: 18px; font-size: var(--fs-sm); color: var(--ink-2); }
.foot-contact li { display: flex; gap: 12px; padding: 3px 0; }
.foot-contact span { color: var(--ink-4); font-size: var(--fs-xs); flex: 0 0 34px; }

.foot-nav { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 28px; }
.foot-col h4 { font-size: var(--fs-xs); color: var(--ink-4); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 12px; font-weight: 500; }
.foot-col li { padding: 4px 0; font-size: var(--fs-sm); }
.foot-col a { color: var(--ink-2); }
.foot-col a:hover { color: var(--accent); }

.foot-links {
  margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: baseline;
  font-size: var(--fs-xs); color: var(--ink-4);
}
.foot-links a { color: var(--ink-3); }
.foot-links a:hover { color: var(--accent); }

.foot-bottom {
  margin-top: 22px; display: flex; flex-wrap: wrap; gap: 10px 24px;
  justify-content: space-between; font-size: var(--fs-xs); color: var(--ink-4);
}
.foot-record { display: flex; flex-wrap: wrap; gap: 14px; }
.foot-record a { color: var(--ink-4); }
.foot-record a:hover { color: var(--ink-2); }

/* ============================ 返回顶部 ============================ */
.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 30;
  width: 38px; height: 38px; display: grid; place-items: center;
  border: 1px solid var(--line-2); border-radius: 50%;
  background: rgba(255, 255, 255, 0.9); color: var(--ink-3);
  cursor: pointer; opacity: 0; visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease, color 0.2s ease;
}
.to-top svg { width: 15px; height: 15px; }
.to-top.is-on { opacity: 1; visibility: visible; }
.to-top:hover { color: var(--ink); border-color: var(--ink-3); }

/* ============================ 内容页通用 ============================ */
.page-head { padding: 52px 0 40px; border-bottom: 1px solid var(--line); }
.crumb { font-size: var(--fs-xs); color: var(--ink-4); margin-bottom: 18px; display: flex; gap: 8px; }
.crumb a { color: var(--ink-3); }
.crumb a:hover { color: var(--accent); }
.page-head h1 { font-size: clamp(26px, 3.2vw, 38px); margin-bottom: 10px; }
.page-head p { color: var(--ink-3); font-size: 14.5px; max-width: 62ch; }

.article { max-width: 760px; padding: 46px 0 60px; }
.article h1 { font-size: clamp(24px, 2.8vw, 32px); margin-bottom: 12px; }
.article-meta { font-size: var(--fs-xs); color: var(--ink-4); font-family: var(--mono); padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.article-body { font-size: 15.5px; color: var(--ink-2); line-height: 1.85; overflow-wrap: break-word; }
.article-body h2, .article-body h3 { margin: 32px 0 12px; font-size: 19px; }
.article-body p { margin: 0 0 16px; }
.article-body img { margin: 20px 0; border-radius: var(--radius); }
.article-body ul, .article-body ol { margin: 0 0 16px; padding-left: 22px; list-style: revert; }
.article-body li { margin-bottom: 6px; }
.article-body a { border-bottom: 1px solid var(--line-2); }
.article-body a:hover { color: var(--accent); }
.article-body blockquote {
  margin: 20px 0; padding: 4px 0 4px 18px; border-left: 2px solid var(--line-2);
  color: var(--ink-3);
}
.article-body pre {
  overflow-x: auto; background: var(--paper-3); padding: 16px;
  border-radius: var(--radius); font-family: var(--mono); font-size: 13px;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }

.pager { display: flex; gap: 12px; justify-content: space-between; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); font-size: var(--fs-sm); }
.pager a { color: var(--ink-3); max-width: 46%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pager a:hover { color: var(--accent); }

.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 34px; flex-wrap: wrap; }
.pagination button {
  min-width: 32px; height: 32px; padding: 0 8px; background: #fff;
  border: 1px solid var(--line-2); border-radius: var(--radius);
  font-size: var(--fs-xs); color: var(--ink-2); cursor: pointer;
}
.pagination button:hover:not(:disabled) { border-color: var(--ink-3); color: var(--ink); }
.pagination button[aria-current="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

.empty { padding: 48px 0; text-align: center; color: var(--ink-4); font-size: var(--fs-sm); }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.contact-item { padding: 28px 26px 28px 0; border-bottom: 1px solid var(--line); }
.contact-item + .contact-item { padding-left: 26px; border-left: 1px solid var(--line); }
.contact-item h3 { font-size: 15px; margin-bottom: 8px; }
.contact-item p { font-size: var(--fs-sm); color: var(--ink-3); }
.contact-item .val { margin-top: 14px; font-family: var(--mono); font-size: 15px; color: var(--ink); word-break: break-all; }

/* 文档页 */
.doc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.doc-cell { background: #fff; padding: 26px 24px; }
.doc-cell h3 { font-size: 15px; margin-bottom: 12px; }
.doc-cell li { padding: 5px 0; font-size: var(--fs-sm); color: var(--ink-3); }
.doc-cell a { color: var(--ink-2); }
.doc-cell a:hover { color: var(--accent); }
.search-line { display: flex; gap: 0; max-width: 520px; margin-top: 24px; border: 1px solid var(--line-2); border-radius: var(--radius); overflow: hidden; background: #fff; }
.search-line input { flex: 1; border: 0; padding: 0 14px; height: 40px; font-size: 14px; font-family: inherit; outline: none; background: transparent; }
.search-line button { height: 40px; padding: 0 20px; border: 0; background: var(--ink); color: #fff; font-size: 13px; cursor: pointer; }
.search-line button:hover { background: #000; }

/* 分栏内容页 */
.split { display: grid; grid-template-columns: minmax(0, 0.62fr) minmax(0, 0.38fr); gap: 56px; align-items: start; }
.split-side { border-left: 1px solid var(--line); padding-left: 32px; }
.split-side h4 { font-size: var(--fs-xs); color: var(--ink-4); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 12px; }
.split-side li { padding: 6px 0; font-size: var(--fs-sm); color: var(--ink-2); }

/* ============================ 动效（克制的入场） ============================ */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================ 响应式 ============================ */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .spec { max-width: 560px; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-top { grid-template-columns: 1fr; gap: 40px; }
  .split { grid-template-columns: 1fr; gap: 34px; }
  .split-side { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 22px; }
}

@media (max-width: 860px) {
  .head-nav {
    position: absolute; left: 0; right: 0; top: 66px;
    display: none; flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 6px 20px 14px; margin: 0;
    box-shadow: none;
  }
  .head-nav.is-open { display: flex; }
  .head-nav .nav-link { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  .head-nav .nav-link::after { display: none; }
  .nav-burger { display: flex; }
  .head-act .link-quiet, .head-act .btn-line { display: none; }
  .wrap { padding: 0 20px; }
  .section { padding: 52px 0; }
  .hero { padding-top: 46px; }
  .entry { grid-template-columns: 32px minmax(0, 1fr) 20px; gap: 14px; }
  .entry-meta { display: none; }
  .grid-3, .grid-2, .list-2col, .contact-grid, .doc-grid { grid-template-columns: minmax(0, 1fr); }
  .contact-item + .contact-item { padding-left: 0; border-left: 0; }
  .stat-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(3), .stat:nth-child(4) { border-top: 1px solid var(--line); }
  .stat:nth-child(4) { border-left: 1px solid var(--line); }
  .foot-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article { padding-top: 30px; }
  .cta { padding: 34px 0; }
  .to-top { right: 16px; bottom: 16px; }

  /* 移动端加大文字链接的可点区域（视觉不变，命中区变大） */
  .news-item { padding: 10px 0; }
  .news-item a { padding: 4px 0; }
  .table .buy a { display: inline-block; padding: 9px 0; }
  .crumb a { display: inline-block; padding: 5px 0; }
  .foot-col a,
  .split-side a,
  .doc-cell a,
  .foot-contact a { display: inline-block; padding: 7px 0; }
  .foot-col li, .split-side li, .doc-cell li { padding: 1px 0; }
  .foot-links a { display: inline-block; padding: 5px 0; }
  .spec-foot a { display: inline-block; padding: 8px 0; }
  .pager a { padding: 6px 0; }
  .contact-item .val a { display: inline-block; padding: 8px 0; }
  .list-block h3 a { display: inline-block; padding: 6px 0; min-height: 32px; line-height: 20px; }
  .brand { padding: 8px 0; }
  .foot-record a { display: inline-block; padding: 6px 0; }
}

@media (max-width: 480px) {
  :root { --fs-body: 14.5px; }
  .hero-facts { gap: 22px; }
  .hero-fact b { font-size: 19px; }
  .foot-nav { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .stat-row { grid-template-columns: minmax(0, 1fr); }
  .stat + .stat { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }
  .list-2col { gap: 34px; }
}

/* 打印 */
@media print {
  .site-head, .to-top, .cta, .nav-burger { display: none !important; }
  body { color: #000; }
  a { text-decoration: underline; }
}