/* ==========================================================================
   www.quanshow.cn — 北京荃秀创芯科技有限公司
   全局样式表 | 纯 CSS，无外部依赖、无字体请求、无框架
   设计基调：深空蓝科技风 + 数据仪表感
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 主色 */
  --c-deep: #0a2a5e;
  --c-deep-2: #14498f;
  --c-blue: #1b6df0;
  --c-blue-dark: #1558c4;
  --c-blue-soft: #e8f0fe;

  /* 功能色（对照表三色标注）
     色彩策略：全站色相收敛在品牌蓝 217° 附近。
     「优于」取蓝绿色相（冷侧），「略差」取暖褐色相并大幅降低饱和度与明度，
     使其只作为「需注意」的克制提示，不再与深蓝主色相冲；
     三个功能色的文字与底色对比度均 ≥4.5:1，满足 WCAG AA。
     三色之外另有文字标签（优于／一致／略差）作为非颜色冗余编码。 */
  --c-better: #00785a;
  --c-better-bg: #e6f7f1;
  --c-same: #5a6b7f;
  --c-same-bg: #eef1f5;
  --c-worse: #b45309;
  --c-worse-bg: #f2f4f7;

  /* 中性色 */
  --c-ink: #16212f;
  --c-ink-2: #33465c;
  --c-ink-3: #64748b;
  --c-line: #dde5ef;
  --c-bg: #ffffff;
  --c-bg-alt: #f5f7fa;
  --c-bg-dark: #0a2a5e;

  /* 排版 */
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  /* 尺度 */
  --w-max: 1200px;
  --w-narrow: 860px;
  --r-sm: 4px;
  --r: 8px;
  --r-lg: 14px;
  --sp: 16px;
  --shadow-sm: 0 1px 3px rgba(10, 42, 94, 0.07);
  --shadow: 0 4px 16px rgba(10, 42, 94, 0.09);
  --shadow-lg: 0 12px 32px rgba(10, 42, 94, 0.13);
}

/* ---------- 2. 归一化 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
img { background: transparent; }

h1, h2, h3, h4, h5, h6 { margin: 0 0 .6em; line-height: 1.3; color: var(--c-deep); font-weight: 700; }
h1 { font-size: clamp(1.55rem, 4.6vw, 2.5rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.3rem, 3.4vw, 1.85rem); letter-spacing: -.005em; }
h3 { font-size: clamp(1.1rem, 2.6vw, 1.3rem); }
h4 { font-size: 1.05rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
li { margin-bottom: .4em; }
a { color: var(--c-blue); text-decoration: none; }
a:hover { text-decoration: underline; }
strong, b { color: var(--c-deep); font-weight: 700; }
code, kbd, samp { font-family: var(--font-mono); font-size: .92em; }
code { background: var(--c-bg-alt); padding: .12em .4em; border-radius: var(--r-sm); color: var(--c-deep); }
hr { border: 0; border-top: 1px solid var(--c-line); margin: 2.5rem 0; }

:focus-visible { outline: 3px solid var(--c-blue); outline-offset: 2px; border-radius: 2px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--c-deep); color: #fff; padding: 10px 18px; border-radius: 0 0 var(--r) 0;
}
.skip-link:focus { left: 0; }

/* ---------- 3. 布局 ---------- */
.wrap { width: 100%; max-width: var(--w-max); margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: var(--w-narrow); }
.section { padding: 64px 0; }
.section-alt { background: var(--c-bg-alt); }
.section-dark { background: var(--c-deep); color: #dbe6f5; }
.section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
.section-dark a { color: #8fc0ff; }
.section-dark strong { color: #fff; }
.section-tight { padding: 44px 0; }
.center { text-align: center; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
@media (min-width: 700px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.sec-head { max-width: 780px; margin-bottom: 34px; }
.sec-head.center { margin-left: auto; margin-right: auto; }
.sec-eyebrow {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--c-blue); margin-bottom: 8px;
}
.section-dark .sec-eyebrow { color: #8fc0ff; }
.sec-head p { color: var(--c-ink-2); font-size: 1.02rem; margin-bottom: 0; }
.section-dark .sec-head p { color: #b9cbe4; }

/* ---------- 4. 头部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--c-line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand img { width: 38px; height: 38px; border-radius: var(--r-sm); }
.brand-txt { display: flex; flex-direction: column; line-height: 1.2; }
.brand-cn { font-size: 1.06rem; font-weight: 700; color: var(--c-deep); letter-spacing: .01em; }
.brand-en { font-size: .62rem; color: var(--c-ink-3); letter-spacing: .18em; text-transform: uppercase; }

.nav-toggle {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--c-bg-alt); border: 1px solid var(--c-line); border-radius: var(--r);
  padding: 8px 13px; font-size: .9rem; font-family: var(--font); color: var(--c-deep);
  font-weight: 600; cursor: pointer;
}
.nav-toggle span.bars { display: block; width: 16px; height: 2px; background: var(--c-deep); position: relative; }
.nav-toggle span.bars::before, .nav-toggle span.bars::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 2px; background: var(--c-deep);
}
.nav-toggle span.bars::before { top: -5px; } .nav-toggle span.bars::after { top: 5px; }

.site-nav { display: none; }
.site-nav.is-open {
  display: block; position: absolute; left: 0; right: 0; top: 100%;
  background: #fff; border-bottom: 1px solid var(--c-line);
  box-shadow: var(--shadow); padding: 10px 20px 18px;
}
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: 11px 4px; font-size: .97rem; font-weight: 600;
  color: var(--c-ink-2); border-bottom: 1px solid var(--c-line);
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--c-blue); text-decoration: none; }
.site-nav .nav-cta { margin-top: 12px; }
.site-nav .nav-cta a {
  border: 0; background: var(--c-blue); color: #fff; text-align: center;
  border-radius: var(--r); padding: 12px; font-weight: 700;
}
.site-nav .nav-cta a:hover { background: var(--c-blue-dark); color: #fff; }

@media (min-width: 1040px) {
  .nav-toggle { display: none; }
  .header-inner { min-height: 72px; }
  .site-nav { display: block; }
  .site-nav.is-open { position: static; box-shadow: none; border: 0; padding: 0; background: transparent; }
  .site-nav ul { display: flex; align-items: center; gap: 4px; }
  .site-nav a { border: 0; padding: 8px 12px; border-radius: var(--r); white-space: nowrap; }
  .site-nav a:hover { background: var(--c-blue-soft); }
  .site-nav .nav-cta { margin: 0 0 0 10px; }
  .site-nav .nav-cta a { padding: 10px 18px; }
}

/* ---------- 5. 面包屑 ---------- */
.crumbs { font-size: .84rem; color: var(--c-ink-3); padding: 14px 0 0; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; }
.crumbs li { margin: 0; display: flex; gap: 6px; align-items: center; }
.crumbs li + li::before { content: "›"; color: #b8c4d4; }
.crumbs a { color: var(--c-ink-3); }
.crumbs a:hover { color: var(--c-blue); }
.crumbs [aria-current="page"] { color: var(--c-ink-2); font-weight: 600; }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #e6eefb;
  background: linear-gradient(122deg, #081f47 0%, var(--c-deep) 42%, var(--c-deep-2) 100%);
  padding: 52px 0 56px;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: repeating-linear-gradient(90deg, rgba(255,255,255,.055) 0 1px, transparent 1px 44px);
}
.hero .wrap { position: relative; z-index: 1; }
.hero-grid { display: grid; gap: 34px; }
@media (min-width: 980px) {
  .hero { padding: 76px 0 80px; }
  .hero-grid { grid-template-columns: 1.15fr .85fr; align-items: center; gap: 48px; }
}
.hero h1 { color: #fff; margin-bottom: 14px; }
.hero h1 .hl {
  color: #7db4ff; display: block; font-size: .62em; font-weight: 700;
  letter-spacing: .01em; margin-top: 10px;
}
.hero-lead { font-size: 1.05rem; color: #c3d5ee; max-width: 640px; margin-bottom: 22px; }
.hero-lead strong { color: #fff; }
.hero-slogan {
  display: inline-block; font-size: 1.02rem; font-weight: 700; color: #fff;
  background: rgba(125, 180, 255, .14); border: 1px solid rgba(125, 180, 255, .4);
  border-radius: var(--r); padding: 10px 16px; margin-bottom: 22px;
}
.hero-facts {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
  list-style: none; margin: 0 0 26px; padding: 0;
}
@media (min-width: 620px) { .hero-facts { grid-template-columns: repeat(4, 1fr); } }
.hero-facts li {
  margin: 0; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.13);
  border-radius: var(--r); padding: 12px 13px;
}
.hero-facts b { display: block; color: #fff; font-size: 1.12rem; font-family: var(--font-mono); line-height: 1.25; }
.hero-facts span { font-size: .8rem; color: #a9c1e0; }
.hero-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--r-lg); padding: 22px; backdrop-filter: blur(4px);
}
.hero-card h2 { color: #fff; font-size: 1.05rem; margin-bottom: 14px; }
.hero-card dl { margin: 0; font-size: .9rem; }
.hero-card dt { color: #8fb3dd; font-size: .78rem; letter-spacing: .05em; text-transform: uppercase; }
.hero-card dd { margin: 0 0 12px; color: #fff; font-weight: 600; }
.hero-card dd:last-child { margin-bottom: 0; }
.hero-card dd .mono { font-family: var(--font-mono); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font); font-size: .97rem; font-weight: 700;
  padding: 13px 24px; border-radius: var(--r); border: 2px solid transparent;
  cursor: pointer; text-align: center; line-height: 1.2;
  transition: background-color .16s ease, border-color .16s ease, transform .16s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--c-blue); color: #fff; }
.btn-primary:hover { background: var(--c-blue-dark); color: #fff; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-ghost:hover { background: rgba(255,255,255,.12); color: #fff; }
.btn-outline { background: #fff; color: var(--c-deep); border-color: var(--c-line); }
.btn-outline:hover { border-color: var(--c-blue); color: var(--c-blue); }
.btn-lg { padding: 15px 30px; font-size: 1.02rem; }
.btn-sm { padding: 9px 16px; font-size: .88rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

.cta-band { background: linear-gradient(120deg, var(--c-deep) 0%, var(--c-deep-2) 100%); color: #dbe6f5; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #c3d5ee; }
.cta-inner { display: grid; gap: 22px; align-items: center; }
@media (min-width: 900px) { .cta-inner { grid-template-columns: 1.4fr 1fr; gap: 40px; } }

/* ---------- 8. 卡片 ---------- */
.card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-lg);
  padding: 22px; box-shadow: var(--shadow-sm);
}
.card h3 { margin-bottom: 8px; font-size: 1.08rem; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card-link { display: block; color: inherit; }
a.card-link:hover { text-decoration: none; box-shadow: var(--shadow); border-color: #bcd2ef; transform: translateY(-2px); transition: .18s; }
a.card-link:hover h3 { color: var(--c-blue); }
.card-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%; background: var(--c-blue-soft);
  color: var(--c-deep); font-weight: 700; font-size: .92rem; margin-bottom: 12px;
}
.card-icon { font-size: 1.5rem; line-height: 1; margin-bottom: 10px; }
.card-tag {
  display: inline-block; font-size: .74rem; font-weight: 700; letter-spacing: .06em;
  color: var(--c-blue); background: var(--c-blue-soft); border-radius: 999px;
  padding: 3px 10px; margin-bottom: 10px;
}
.card-meta { font-size: .84rem; color: var(--c-ink-3); margin: 0; }

/* 选型痛点卡片：与全站主题统一，采用品牌蓝左侧强调条，
   不使用暖色，避免三张并排卡片形成大面积离题色块 */
.pain-card { border-left: 4px solid var(--c-blue); }
.pain-card h3 { color: var(--c-deep); }
.pain-card .pain-x { color: var(--c-blue); font-weight: 700; font-size: .84rem; letter-spacing: .04em; }
.value-card { border-top: 3px solid var(--c-blue); }
.value-card .card-num { background: var(--c-deep); color: #fff; }

/* ---------- 9. 数据与表格 ---------- */
.stat-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
@media (min-width: 760px) { .stat-row { grid-template-columns: repeat(4, 1fr); } }
.stat {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-lg);
  padding: 18px; text-align: center;
}
.stat b { display: block; font-family: var(--font-mono); font-size: 1.45rem; color: var(--c-deep); line-height: 1.2; }
.stat span { font-size: .84rem; color: var(--c-ink-3); }
.stat em { display: block; font-style: normal; font-size: .74rem; color: var(--c-ink-3); margin-top: 2px; }

.table-scroll {
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  border: 1px solid var(--c-line); border-radius: var(--r-lg); background: #fff;
}
.table-scroll table { border-collapse: collapse; width: 100%; min-width: 720px; font-size: .9rem; }
.table-scroll caption {
  caption-side: top; text-align: left; padding: 14px 16px 10px;
  font-size: .88rem; color: var(--c-ink-2); font-weight: 600;
}
.table-scroll th, .table-scroll td { padding: 10px 12px; border-bottom: 1px solid var(--c-line); text-align: left; vertical-align: top; }
.table-scroll thead th {
  background: var(--c-deep); color: #fff; font-weight: 700; font-size: .84rem;
  position: sticky; top: 0; z-index: 2; white-space: nowrap;
}
.table-scroll tbody tr:nth-child(even) { background: #fafcfe; }
.table-scroll tbody tr:hover { background: var(--c-blue-soft); }
.table-scroll td.num, .table-scroll th.num { font-family: var(--font-mono); white-space: nowrap; }
.table-scroll td.idx { color: var(--c-ink-3); font-family: var(--font-mono); }
.table-scroll .group-row td {
  background: var(--c-blue-soft); font-weight: 700; color: var(--c-deep);
  font-size: .88rem; letter-spacing: .03em;
}
.table-scroll tbody th[scope="row"] { font-weight: 600; color: var(--c-ink); background: inherit; position: static; white-space: normal; }
.table-hint { font-size: .82rem; color: var(--c-ink-3); margin: 10px 0 0; }
.table-actions { margin: 14px 0 0; }

.tag { display: inline-block; font-size: .78rem; font-weight: 700; border-radius: 999px; padding: 2px 9px; white-space: nowrap; }
.tag-better { color: var(--c-better); background: var(--c-better-bg); }
.tag-same { color: var(--c-same); background: var(--c-same-bg); }
.tag-worse { color: var(--c-worse); background: var(--c-worse-bg); }

.spec-list { list-style: none; margin: 0; padding: 0; }
.spec-list li {
  display: flex; gap: 12px; justify-content: space-between; align-items: baseline;
  padding: 9px 0; border-bottom: 1px dashed var(--c-line); margin: 0; font-size: .92rem;
}
.spec-list li:last-child { border-bottom: 0; }
.spec-list .k { color: var(--c-ink-2); flex: 1 1 auto; }
.spec-list .v { font-family: var(--font-mono); font-weight: 700; color: var(--c-deep); text-align: right; flex: 0 0 auto; }

.callout {
  background: var(--c-blue-soft); border-left: 4px solid var(--c-blue);
  border-radius: 0 var(--r) var(--r) 0; padding: 16px 18px; margin: 0 0 20px;
}
.callout p:last-child { margin-bottom: 0; }
.callout h3, .callout h4 { margin-bottom: 6px; font-size: 1rem; }

/* 提示类区块：统一使用主题色（品牌蓝）。
   强调由「左侧蓝条 + 深蓝标题 + 注意标签」承担，
   不再使用暖色底或暖色文字，保证全站色相统一在品牌蓝系内。
   三种 callout（普通／注意／正向）结构完全一致，仅强调条颜色不同。 */
.callout-warn {
  background: var(--c-blue-soft);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-blue);
  border-radius: var(--r);
}
.callout-warn h3, .callout-warn h4 { color: var(--c-deep); }
.callout-warn h3::before, .callout-warn h4::before {
  content: "注意";
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .02em;
  color: #fff; background: var(--c-blue);
  border-radius: 3px; padding: 1px 6px; margin-right: 8px; vertical-align: 2px;
}
.callout-warn strong { color: var(--c-deep); }

.callout-ok { background: var(--c-better-bg); border-left: 4px solid var(--c-better); }

.answer-box {
  background: #fff; border: 1px solid var(--c-line); border-left: 4px solid var(--c-blue);
  border-radius: 0 var(--r-lg) var(--r-lg) 0; padding: 20px 22px; margin: 0 0 26px;
  box-shadow: var(--shadow-sm);
}
.answer-box h2 { font-size: 1.02rem; margin-bottom: 8px; letter-spacing: .02em; }
.answer-box p:last-child { margin-bottom: 0; }

/* ---------- 10. 步骤 ---------- */
.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.steps li {
  position: relative; padding: 0 0 22px 52px; margin: 0; counter-increment: step;
  border-left: 2px solid var(--c-line); margin-left: 18px;
}
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  content: counter(step); position: absolute; left: -19px; top: 0;
  width: 36px; height: 36px; border-radius: 50%; background: var(--c-blue); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-family: var(--font-mono);
}
.steps h3 { margin-bottom: 4px; font-size: 1.04rem; }
.steps p { margin-bottom: 0; color: var(--c-ink-2); font-size: .93rem; }

/* ---------- 11. FAQ ---------- */
.faq { border-top: 1px solid var(--c-line); }
.faq details { border-bottom: 1px solid var(--c-line); background: #fff; }
.faq summary {
  cursor: pointer; padding: 16px 40px 16px 4px; position: relative;
  font-weight: 700; color: var(--c-deep); font-size: 1rem; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-size: 1.35rem; font-weight: 400; color: var(--c-blue); line-height: 1;
}
.faq details[open] summary::after { content: "−"; }
.faq details[open] summary { color: var(--c-blue); }
.faq .faq-body { padding: 0 4px 18px; color: var(--c-ink-2); font-size: .95rem; }
.faq .faq-body p:last-child, .faq .faq-body ul:last-child { margin-bottom: 0; }

/* ---------- 12. 图片与图示 ---------- */
figure { margin: 0 0 24px; }
figure img { border: 1px solid var(--c-line); border-radius: var(--r); width: 100%; }
figcaption { font-size: .84rem; color: var(--c-ink-3); margin-top: 8px; line-height: 1.6; }
.fig-grid { display: grid; gap: 18px; grid-template-columns: 1fr; }
@media (min-width: 760px) { .fig-grid { grid-template-columns: repeat(3, 1fr); } }
.fig-grid figure { margin: 0; }
.fig-zoom { display: block; }

/* ---------- 13. 页脚 ---------- */
.site-footer { background: #071d3f; color: #a9c1e0; font-size: .9rem; padding: 44px 0 26px; }
.site-footer h2, .site-footer h3 { color: #fff; font-size: .95rem; letter-spacing: .04em; margin-bottom: 12px; }
.footer-grid { display: grid; gap: 26px; grid-template-columns: 1fr; }
@media (min-width: 760px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 32px; } }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 7px; }
.site-footer a { color: #a9c1e0; }
.site-footer a:hover { color: #fff; }
.site-footer address { font-style: normal; line-height: 1.9; }
.site-footer .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.site-footer .footer-brand img { width: 40px; height: 40px; border-radius: var(--r-sm); background: #fff; padding: 3px; }
.site-footer .footer-brand b { color: #fff; font-size: 1rem; display: block; line-height: 1.3; }
.site-footer .footer-brand span { font-size: .68rem; letter-spacing: .16em; color: #7f9ec4; }
.footer-phone { font-family: var(--font-mono); font-size: 1.12rem; color: #fff; font-weight: 700; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); margin-top: 30px; padding-top: 18px;
  display: flex; flex-wrap: wrap; gap: 10px 20px; justify-content: space-between;
  font-size: .82rem; color: #7f9ec4;
}
.footer-bottom p { margin: 0; }

/* ---------- 14. 移动端悬浮联系条 ---------- */
.mobile-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  display: flex; background: #fff; border-top: 1px solid var(--c-line);
  box-shadow: 0 -3px 14px rgba(10,42,94,.12);
}
.mobile-bar a {
  flex: 1; text-align: center; padding: 11px 6px; font-size: .88rem; font-weight: 700;
  color: var(--c-deep); border-right: 1px solid var(--c-line);
}
.mobile-bar a:last-child { border-right: 0; background: var(--c-blue); color: #fff; }
.mobile-bar a:hover { text-decoration: none; }
@media (min-width: 900px) { .mobile-bar { display: none; } }
@media (max-width: 899px) { body { padding-bottom: 47px; } }

/* ---------- 15. 工具类 ---------- */
.mono { font-family: var(--font-mono); }
.nowrap { white-space: nowrap; }
.small { font-size: .85rem; color: var(--c-ink-3); }
.dl-inline { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.dl-inline li { margin: 0; }
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; padding: 0; list-style: none; }
.badge-row li {
  margin: 0; font-size: .8rem; font-weight: 600; color: var(--c-deep);
  background: var(--c-bg-alt); border: 1px solid var(--c-line); border-radius: 999px; padding: 4px 12px;
}
.section-dark .badge-row li { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.2); color: #dbe6f5; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

@media print {
  .site-header, .mobile-bar, .site-footer, .btn-row, .table-actions { display: none !important; }
  body { font-size: 11pt; padding-bottom: 0; }
  .table-scroll { overflow: visible; }
  .table-scroll table { min-width: 0; font-size: 9pt; }
  a { color: #000; text-decoration: underline; }
  .section { padding: 12pt 0; }
}