@charset "utf-8";
/* ==========================================================================
   青岩律师事务所 — 站点样式表
   --------------------------------------------------------------------------
   设计语言：编辑网格（Editorial Grid）
     · 无衬线粗黑标题 + 等宽体标签 + 描边序号，替代传统律所的衬线文书风
     · 深墨青（Deep Teal）作为骨架色，柿橙（Persimmon）作为唯一强调色
     · 全直角、2px 分区线、区块反白色块，拒绝圆角与渐变糖衣
   资源策略：零 CDN 依赖
     · 字体：系统字体栈（不加载任何 webfont）
     · 图标：文档内联 SVG（viewBox 0 0 24 24，统一 .ic 类尺寸）
     · 图片：本地 SVG 文件
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计变量
   -------------------------------------------------------------------------- */
:root {
  /* 墨青阶（骨架） */
  --ink-900: #06181a;
  --ink-800: #0a2427;
  --ink-700: #0f3135;
  --ink-600: #144046;
  --ink-500: #1a5259;

  /* 石青（主色） */
  --teal-600: #196b66;
  --teal-500: #227a72;
  --teal-400: #3d9a90;
  --teal-300: #7fbdb4;
  --teal-100: #d9e9e5;
  --teal-50: #edf4f2;

  /* 冷白纸 */
  --bone: #f3f5f2;
  --bone-2: #ffffff;
  --bone-3: #e9ece7;
  --bone-4: #dfe4de;

  /* 线 */
  --line: #dde3dd;
  --line-2: #c8d1ca;
  --line-3: #9fada6;

  /* 柿橙（强调） */
  --per: #e4572e;
  --per-dark: #c33f18;
  --per-soft: #fdeee8;
  --per-line: #f3c8ba;

  /* 文本 */
  --text: #0e1f21;
  --text-2: #40565a;
  --muted: #6b7c7e;
  --muted-2: #93a1a2;
  --on-ink: #eaf1ef;
  --on-ink-2: #a8bfbc;

  /* 字体栈（系统内置，零请求） */
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", Roboto, Helvetica, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", "Songti SC", "STSong", "SimSun", serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  /* 尺寸 */
  --wrap: 1240px;
  --pad: 24px;
  --gap: 24px;
  --header-h: 72px;
  --sh-1: 0 1px 2px rgba(6, 24, 26, .05);
  --sh-2: 0 10px 30px -14px rgba(6, 24, 26, .22);
  --sh-3: 0 26px 60px -28px rgba(6, 24, 26, .34);
}

/* --------------------------------------------------------------------------
   2. 复位与基础
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bone-2);
  overflow-x: hidden;          /* 移动端硬性防溢出 */
  -webkit-font-smoothing: antialiased;
}

/* 图片参与流式布局；内联 SVG 单独处理（切勿与 img 合并为一条复位规则） */
img,
video {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}
svg {
  display: inline-block;
  vertical-align: -.125em;
  flex: 0 0 auto;
  max-width: 100%;
}

/* 图标统一类：所有内联 SVG 必须带 .ic 并显式给定尺寸 */
.ic {
  width: 18px;
  height: 18px;
  max-width: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.01em;
  overflow-wrap: break-word;
}
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, figure { max-width: 100%; }
figure { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
time { font-variant-numeric: tabular-nums; }

:focus-visible {
  outline: 2px solid var(--per);
  outline-offset: 2px;
}

::selection { background: var(--per); color: #fff; }

/* --------------------------------------------------------------------------
   3. 版心与工具类
   -------------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.wrap--narrow { max-width: 900px; }
.sec { padding: 76px 0; }
.sec--tint { background: var(--bone); }
.sec--ink { background: var(--ink-800); color: var(--on-ink); }
.sec--tight { padding: 52px 0; }
.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;
}

/* 网格：minmax(0,1fr) 防止子项撑破容器 */
.grid { display: grid; gap: var(--gap); }
.grid > * { min-width: 0; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* 区块标题（编号 + 标题 + 更多） */
.sec-head {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  padding-bottom: 16px;
  margin-bottom: 34px;
  border-bottom: 2px solid var(--text);
}
.sec-head--ink { border-bottom-color: rgba(255, 255, 255, .28); }
.sec-num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--per);
  padding-bottom: 6px;
  flex: 0 0 auto;
}
.sec-title { flex: 1 1 auto; min-width: 0; }
.sec-title h2 {
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.15;
}
.sec-title p {
  margin: 6px 0 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.sec-head--ink .sec-title p { color: var(--on-ink-2); }
.sec-desc {
  flex: 0 1 42%;
  font-size: 14px;
  color: var(--muted);
  text-align: right;
  line-height: 1.7;
}
.sec-more {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  padding-bottom: 4px;
  border-bottom: 2px solid var(--per);
  white-space: nowrap;
}
.sec-more .ic { width: 15px; height: 15px; }
.sec-more:hover { color: var(--per); }
.sec-head--ink .sec-desc { color: var(--on-ink-2); }
.sec-head--ink .sec-more { color: #fff; }
.mt-24 { margin-top: 24px; }
.req { font-style: normal; color: var(--per); }

/* 流程步骤（编号列表变体，无缩略图） */
.step-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 34px;
}
.step-list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 20px 2px;
  border-top: 1px solid var(--line);
  min-width: 0;
}
.step-list .idx {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--line-3);
  line-height: 1.6;
}
.step-list h3 { font-size: 15.5px; }
.step-list p { margin: 8px 0 0; font-size: 13px; line-height: 1.7; color: var(--muted); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  border: 2px solid transparent;
  border-radius: 0;
  background: var(--ink-800);
  color: #fff;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  text-align: center;
}
.btn .ic { width: 16px; height: 16px; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--per); border-color: var(--per); color: #fff; }
.btn-primary:hover { background: var(--per-dark); border-color: var(--per-dark); }
.btn-ghost { background: transparent; border-color: var(--line-2); color: var(--text); }
.btn-ghost:hover { border-color: var(--text); background: var(--text); color: #fff; }
.btn-onink { background: transparent; border-color: rgba(255, 255, 255, .4); color: #fff; }
.btn-onink:hover { background: #fff; color: var(--ink-800); border-color: #fff; }
.btn-sm { padding: 9px 16px; font-size: 13px; }
.btn-block { width: 100%; }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  background: var(--teal-50);
  color: var(--teal-600);
  border: 1px solid var(--teal-100);
  white-space: nowrap;
}
.tag--per { background: var(--per-soft); color: var(--per-dark); border-color: var(--per-line); }

/* --------------------------------------------------------------------------
   4. 顶栏
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--ink-900);
  color: var(--on-ink);
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  transition: box-shadow .22s ease;
}
.site-header.is-stuck { box-shadow: 0 12px 34px -18px rgba(0, 0, 0, .7); }
.header-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  min-width: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--per);
  color: #fff;
  flex: 0 0 auto;
}
.brand-mark .ic { width: 22px; height: 22px; stroke-width: 1.6; }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-text strong {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .02em;
  white-space: nowrap;
}
.brand-text em {
  font-family: var(--mono);
  font-style: normal;
  font-size: 9px;
  letter-spacing: .2em;
  color: var(--on-ink-2);
  white-space: nowrap;
}

.nav-main { margin-left: auto; }
.nav-main ul { display: flex; align-items: center; gap: 4px; }
.nav-main a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--on-ink);
  position: relative;
  white-space: nowrap;
}
.nav-main a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--per);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s ease;
}
.nav-main a:hover::after,
.nav-main a.is-active::after { transform: scaleX(1); }
.nav-main a.is-active { color: #fff; }

.header-cta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}
.header-tel {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  text-align: right;
}
.header-tel span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--on-ink-2);
}
.header-tel strong {
  font-size: 16px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

/* 移动端抽屉：<details> 原生实现，无 JS 也能展开 */
.nav-drawer { display: none; position: relative; margin-left: auto; }
.nav-drawer > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, .28);
  color: #fff;
}
.nav-drawer > summary::-webkit-details-marker { display: none; }
.nav-drawer > summary::marker { content: ""; }
.nav-drawer .ic { width: 20px; height: 20px; }
.nav-drawer__close { display: none; }
.nav-drawer[open] .nav-drawer__open { display: none; }
.nav-drawer[open] .nav-drawer__close { display: block; }
.drawer-panel {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  background: var(--ink-800);
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 10px 0 22px;
  box-shadow: 0 24px 40px -20px rgba(0, 0, 0, .75);
}
.drawer-panel nav { padding: 0 var(--pad); }
.drawer-panel a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 2px;
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
}
.drawer-panel a .ic { width: 16px; height: 16px; color: var(--per); }
.drawer-foot { padding: 18px var(--pad) 0; display: grid; gap: 10px; }
.drawer-foot .btn { width: 100%; }
.drawer-foot p {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--on-ink-2);
}

/* --------------------------------------------------------------------------
   5. 首页 Banner
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: var(--ink-800);
  color: var(--on-ink);
  overflow: hidden;
  border-bottom: 3px solid var(--per);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  top: -22%;
  right: -10%;
  width: 46%;
  padding-bottom: 46%;
  background: radial-gradient(circle, rgba(34, 122, 114, .5), transparent 68%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 46px;
  align-items: center;
  padding-block: 84px 72px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--on-ink);
  border: 1px solid rgba(255, 255, 255, .24);
}
.hero-eyebrow .dot {
  width: 7px; height: 7px;
  background: var(--per);
  flex: 0 0 auto;
}
.hero h1 {
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: #fff;
}
.hero h1 em {
  font-style: normal;
  color: var(--per);
  box-shadow: inset 0 -.14em 0 0 rgba(228, 87, 46, .22);
}
.hero-sub {
  margin: 22px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--on-ink-2);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .16);
}
.hero-points li {
  display: flex;
  gap: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--on-ink-2);
  min-width: 0;
}
.hero-points .ic {
  width: 17px; height: 17px;
  color: var(--per);
  margin-top: 3px;
}

/* Banner 右侧信息卡 */
.hero-card {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .16);
  padding: 28px 26px 24px;
  backdrop-filter: blur(2px);
  min-width: 0;
}
.hero-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
}
.hero-card__head h2 { font-size: 17px; color: #fff; }
.hero-card__head span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--on-ink-2);
}
.hero-card dl {
  margin: 16px 0 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 18px;
  font-size: 14px;
}
.hero-card dt {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--on-ink-2);
  white-space: nowrap;
}
.hero-card dd {
  margin: 0;
  color: #fff;
  font-weight: 600;
  overflow-wrap: break-word;
  min-width: 0;
}
.hero-card__foot {
  margin-top: 20px;
  display: grid;
  gap: 10px;
}
.hero-card__foot .btn { width: 100%; }
.hero-art { margin: 0 0 18px; }
.hero-art svg { width: 100%; height: auto; display: block; }

/* 数据带 */
.stats {
  background: var(--bone);
  border-bottom: 1px solid var(--line);
}
.stats ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.stats li {
  padding: 26px 22px;
  border-left: 1px solid var(--line);
  min-width: 0;
}
.stats li:first-child { border-left: 0; padding-left: 0; }
.stats strong {
  display: block;
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink-800);
}
.stats strong i {
  font-style: normal;
  font-size: .5em;
  color: var(--per);
  margin-left: 2px;
}
.stats span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   6. 分类信息（业务领域）
   -------------------------------------------------------------------------- */
.cat-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cat-card {
  display: block;
  position: relative;
  padding: 30px 26px 26px;
  background: var(--bone-2);
  transition: background-color .2s ease, color .2s ease;
  min-width: 0;
}
.cat-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.cat-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--teal-50);
  color: var(--teal-600);
  border: 1px solid var(--teal-100);
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}
.cat-icon .ic { width: 22px; height: 22px; }
.cat-index {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted-2);
}
.cat-card h3 {
  margin: 20px 0 0;
  font-size: 18px;
}
.cat-card p {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-2);
}
.cat-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.cat-card__foot .ic { width: 16px; height: 16px; color: var(--per); transition: transform .2s ease; }
.cat-card:hover { background: var(--ink-800); color: #fff; }
.cat-card:hover h3 { color: #fff; }
.cat-card:hover p { color: var(--on-ink-2); }
.cat-card:hover .cat-card__foot { border-top-color: rgba(255, 255, 255, .18); color: var(--on-ink-2); }
.cat-card:hover .cat-icon { background: var(--per); border-color: var(--per); color: #fff; }
.cat-card:hover .cat-card__foot .ic { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   7. 文章卡片（带缩略图）
   -------------------------------------------------------------------------- */
.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bone-2);
  border: 1px solid var(--line);
  min-width: 0;
  transition: box-shadow .22s ease, transform .22s ease, border-color .22s ease;
}
.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-2);
  box-shadow: var(--sh-2);
}
.post-thumb {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bone-3);
  border-bottom: 1px solid var(--line);
}
.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.post-card:hover .post-thumb img { transform: scale(1.045); }
.post-thumb__tag {
  position: absolute;
  left: 0;
  top: 0;
  padding: 4px 10px;
  background: var(--per);
  color: #fff;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
}
.post-body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: 20px 20px 18px;
  min-width: 0;
}
.post-body h3 {
  font-size: 17px;
  line-height: 1.45;
  overflow-wrap: break-word;
}
.post-body h3 a:hover { color: var(--per); }
.post-excerpt {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-2);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 16px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
}
.post-meta span { display: inline-flex; align-items: center; gap: 5px; }
.post-meta .ic { width: 13px; height: 13px; }
.post-meta i {
  font-style: normal;
  width: 1px;
  height: 11px;
  background: var(--line-2);
}

/* 特色区：1 大 + 2 横排 */
.feat-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
  gap: var(--gap);
}
.feat-col { display: grid; gap: var(--gap); align-content: start; min-width: 0; }
.post-card--lead .post-body { padding: 24px 26px 22px; }
.post-card--lead .post-body h3 { font-size: clamp(20px, 2.6vw, 26px); }
.post-card--lead .post-excerpt { -webkit-line-clamp: 2; font-size: 14px; }

.post-row {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 0;
}
.post-row .post-thumb { aspect-ratio: auto; height: 100%; border-bottom: 0; border-right: 1px solid var(--line); }
.post-row .post-body { padding: 16px 18px; }
.post-row .post-body h3 { font-size: 15.5px; }
.post-row .post-excerpt { -webkit-line-clamp: 2; margin-top: 8px; font-size: 13px; }
.post-row .post-meta { padding-top: 12px; }

/* --------------------------------------------------------------------------
   8. 无缩略图文章列表（双列 / 三列）
   -------------------------------------------------------------------------- */
.link-list {
  display: grid;
  gap: 0 34px;
}
.link-list--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.link-list--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.link-item { border-top: 1px solid var(--line); min-width: 0; }
.link-item > a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 20px 2px;
  transition: padding-left .2s ease, background-color .2s ease;
}
.link-item .idx {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--line-3);
  line-height: 1.6;
}
.link-item h3 {
  font-size: 15.5px;
  line-height: 1.5;
  font-weight: 700;
  transition: color .18s ease;
}
.link-item p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.link-item time {
  display: block;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted-2);
}
.link-item > a:hover { padding-left: 10px; background: var(--teal-50); }
.link-item > a:hover h3 { color: var(--per); }
.link-item > a:hover .idx { color: var(--per); }
.link-list--ink .link-item { border-top-color: rgba(255, 255, 255, .16); }
.link-list--ink .link-item > a:hover { background: rgba(255, 255, 255, .06); }
.link-list--ink .link-item h3 { color: #fff; }
.link-list--ink .link-item p { color: var(--on-ink-2); }
.link-list--ink .link-item time,
.link-list--ink .link-item .idx { color: var(--on-ink-2); }

/* --------------------------------------------------------------------------
   9. 咨询表单模块
   -------------------------------------------------------------------------- */
.lead { background: var(--ink-800); color: var(--on-ink); position: relative; overflow: hidden; }
.lead::before {
  content: "";
  position: absolute;
  left: -8%;
  bottom: -40%;
  width: 46%;
  padding-bottom: 46%;
  background: radial-gradient(circle, rgba(34, 122, 114, .42), transparent 70%);
  pointer-events: none;
}
.lead-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 52px;
  align-items: start;
}
.lead-copy h2 {
  font-size: clamp(24px, 3.6vw, 36px);
  color: #fff;
}
.lead-copy > p {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-ink-2);
}
.lead-way {
  margin-top: 30px;
  display: grid;
  gap: 1px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .14);
}
.lead-way li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--ink-800);
  font-size: 14px;
  min-width: 0;
}
.lead-way .ic { width: 18px; height: 18px; color: var(--per); }
.lead-way b { font-weight: 700; color: #fff; }
.lead-way span { color: var(--on-ink-2); margin-left: auto; font-family: var(--mono); font-size: 12px; }
.lead-assure {
  margin-top: 22px;
  padding-left: 14px;
  border-left: 3px solid var(--per);
  font-size: 13px;
  line-height: 1.75;
  color: var(--on-ink-2);
}

.lead-form {
  background: var(--bone-2);
  color: var(--text);
  padding: 30px 28px 26px;
  border-top: 3px solid var(--per);
  box-shadow: var(--sh-3);
  min-width: 0;
}
.lead-form h3 { font-size: 19px; }
.lead-form > p.hint {
  margin: 8px 0 22px;
  font-size: 13px;
  color: var(--muted);
}
.field { margin-bottom: 16px; min-width: 0; }
.field label {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-2);
}
.field label i { font-style: normal; color: var(--per); margin-left: 3px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  max-width: 100%;
  padding: 11px 13px;
  font-size: 14.5px;
  background: var(--bone);
  border: 1px solid var(--line-2);
  border-radius: 0;
  transition: border-color .18s ease, background-color .18s ease;
}
.field textarea { min-height: 104px; resize: vertical; line-height: 1.7; }
.field select { appearance: none; background-image: none; padding-right: 34px; }
.field--select { position: relative; }
.field--select .ic {
  position: absolute;
  right: 12px;
  bottom: 14px;
  width: 16px; height: 16px;
  color: var(--muted);
  pointer-events: none;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--teal-500);
}
.field.is-error input,
.field.is-error select,
.field.is-error textarea { border-color: var(--per); background: var(--per-soft); }
.field .err {
  display: none;
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--per-dark);
}
.field.is-error .err { display: block; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.check {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
  cursor: pointer;
}
.check input { width: 16px; height: 16px; margin: 2px 0 0; flex: 0 0 auto; accent-color: var(--per); }
.check a { color: var(--teal-600); text-decoration: underline; }
.check.is-error { color: var(--per-dark); }
.field .check { font-weight: 400; margin-bottom: 0; }
.form-foot { margin-top: 20px; }
.form-note {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted-2);
}
.form-msg {
  display: none;
  margin-top: 16px;
  padding: 12px 14px;
  font-size: 13.5px;
  line-height: 1.7;
  border-left: 3px solid var(--teal-500);
  background: var(--teal-50);
  color: var(--teal-600);
}
.form-msg.is-ok { display: block; }
.form-msg.is-err {
  display: block;
  border-left-color: var(--per);
  background: var(--per-soft);
  color: var(--per-dark);
}
#leadSink { display: none; }
[hidden] { display: none !important; }

/* --------------------------------------------------------------------------
   10. 友情链接
   -------------------------------------------------------------------------- */
.friend-links { padding: 30px 0; background: var(--bone); border-top: 1px solid var(--line); }
.friend-links .fl-inner {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  flex-wrap: wrap;
}
.fl-title {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--text);
  padding-top: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.fl-title .ic { width: 15px; height: 15px; color: var(--per); }
.fl-list {
  flex: 1 1 320px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  min-width: 0;
}
.fl-list a {
  padding: 4px 11px;
  font-size: 12.5px;
  color: var(--text-2);
  background: var(--bone-2);
  border: 1px solid var(--line);
  overflow-wrap: break-word;
  max-width: 100%;
}
.fl-list a:hover { color: #fff; background: var(--teal-600); border-color: var(--teal-600); }

/* --------------------------------------------------------------------------
   11. 页脚
   -------------------------------------------------------------------------- */
.site-footer { background: var(--ink-900); color: var(--on-ink-2); padding-top: 62px; font-size: 13.5px; }
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 40px 34px;
  padding-bottom: 48px;
}
.footer-grid > * { min-width: 0; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-text strong { color: #fff; }
.footer-about {
  margin: 18px 0 0;
  line-height: 1.85;
  max-width: 34em;
}
.footer-contact { margin-top: 18px; display: grid; gap: 10px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; min-width: 0; }
.footer-contact .ic { width: 15px; height: 15px; color: var(--per); margin-top: 4px; }
.footer-contact b { color: #fff; font-variant-numeric: tabular-nums; }
.footer-col h4 {
  font-size: 14px;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a:hover { color: var(--per); }
.footer-col li { overflow-wrap: break-word; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 20px 0 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
}
.footer-bottom p { margin: 0; overflow-wrap: break-word; }
.footer-bottom a:hover { color: var(--per); }
.footer-disc {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.75;
  color: #7e9491;
}
.footer-disc:first-of-type { margin-top: 0; }

/* --------------------------------------------------------------------------
   12. 内页 Banner + 面包屑
   -------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  background: var(--ink-800);
  color: var(--on-ink);
  padding: 58px 0 52px;
  overflow: hidden;
  border-bottom: 3px solid var(--per);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -6%;
  top: -46%;
  width: 34%;
  padding-bottom: 34%;
  background: radial-gradient(circle, rgba(34, 122, 114, .45), transparent 68%);
  pointer-events: none;
}
.page-hero__inner { position: relative; z-index: 2; min-width: 0; }
.page-hero__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--per);
}
.page-hero__label .ic { width: 14px; height: 14px; }
.page-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(26px, 4.4vw, 42px);
  color: #fff;
  letter-spacing: -.02em;
}
.page-hero p {
  margin: 16px 0 0;
  max-width: 56em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--on-ink-2);
}
/* 文章页 banner 的导语（标题仅保留正文那一处 H1） */
.page-hero__lead {
  margin-top: 18px !important;
  max-width: 62ch !important;
  font-size: clamp(16px, 2vw, 19px) !important;
  line-height: 1.8 !important;
  color: var(--on-ink) !important;
}
.page-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .16);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--on-ink-2);
}
.page-hero__stats b { color: #fff; font-size: 14px; }

.crumb-bar { background: var(--bone); border-bottom: 1px solid var(--line); }
.breadcrumb { padding: 13px 0; font-size: 13px; color: var(--muted); }
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.breadcrumb li { display: flex; align-items: center; gap: 8px; max-width: 100%; }
.breadcrumb li + li::before {
  content: "";
  width: 5px; height: 5px;
  background: var(--line-3);
  transform: rotate(45deg);
  flex: 0 0 auto;
}
.breadcrumb a { overflow-wrap: break-word; }
.breadcrumb a:hover { color: var(--per); }
.breadcrumb [aria-current="page"] { color: var(--text); font-weight: 700; overflow-wrap: break-word; }

/* --------------------------------------------------------------------------
   13. 列表页 / 文章页 布局
   -------------------------------------------------------------------------- */
.layout-side {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
  padding-block: 52px 76px;
}
.col-main, .col-side { min-width: 0; }

/* 筛选条 */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-bottom: 18px;
  margin-bottom: 26px;
  border-bottom: 2px solid var(--text);
}
.filter-bar .filter-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted-2);
  flex: 0 0 auto;
}
.filter-list { display: flex; flex-wrap: wrap; gap: 8px; flex: 1 1 auto; min-width: 0; }
.filter-list button {
  padding: 6px 13px;
  font-size: 13px;
  font-weight: 600;
  background: var(--bone);
  border: 1px solid var(--line);
  color: var(--text-2);
  cursor: pointer;
  transition: all .18s ease;
}
.filter-list button:hover { border-color: var(--text); color: var(--text); }
.filter-list button.is-on { background: var(--ink-800); border-color: var(--ink-800); color: #fff; }
.filter-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  flex: 0 0 auto;
}
.filter-count b { color: var(--per); }

/* 列表页文章（横排带缩略图） */
.post-list { display: grid; gap: 22px; }
.post-list .post-card { flex-direction: row; }
.post-list .post-thumb { flex: 0 0 268px; aspect-ratio: 16 / 10; border-bottom: 0; border-right: 1px solid var(--line); }
.post-list .post-body { padding: 22px 24px; }
.post-list .post-body h3 { font-size: 19px; }
.post-list .post-excerpt { -webkit-line-clamp: 2; }

/* 分页 */
.pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.pager a, .pager span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  font-family: var(--mono);
  font-size: 13px;
  border: 1px solid var(--line-2);
  background: var(--bone-2);
  color: var(--text-2);
}
.pager a:hover { background: var(--ink-800); border-color: var(--ink-800); color: #fff; }
.pager .is-now { background: var(--per); border-color: var(--per); color: #fff; font-weight: 700; }
.pager .is-dis { color: var(--muted-2); background: var(--bone); }
.pager .ic { width: 15px; height: 15px; }
.pager .pager-info { margin-left: auto; border: 0; background: none; color: var(--muted); font-size: 12px; }

/* 侧栏 */
.side-card {
  border: 1px solid var(--line);
  background: var(--bone-2);
  margin-bottom: 24px;
}
.side-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 15px 18px;
  background: var(--bone);
  border-bottom: 1px solid var(--line);
}
.side-card__head h2 { font-size: 14.5px; }
.side-card__head span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--muted-2);
}
.side-card__body { padding: 6px 18px 16px; }
.side-list li { border-bottom: 1px solid var(--line); }
.side-list li:last-child { border-bottom: 0; }
.side-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  padding: 13px 0;
}
.side-list .idx {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--line-3);
}
.side-list h3 { font-size: 14px; line-height: 1.55; font-weight: 700; }
.side-list time {
  display: block;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted-2);
}
.side-list a:hover h3 { color: var(--per); }
.side-list a:hover .idx { color: var(--per); }

.side-cats li { border-bottom: 1px solid var(--line); }
.side-cats li:last-child { border-bottom: 0; }
.side-cats a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 0;
  font-size: 14px;
  font-weight: 600;
}
.side-cats a span {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted-2);
  flex: 0 0 auto;
}
.side-cats a:hover { color: var(--per); }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 0 4px; }
.tag-cloud a {
  padding: 4px 10px;
  font-size: 12.5px;
  background: var(--bone);
  border: 1px solid var(--line);
  color: var(--text-2);
}
.tag-cloud a:hover { background: var(--teal-600); border-color: var(--teal-600); color: #fff; }

.side-cta {
  background: var(--ink-800);
  color: var(--on-ink);
  padding: 24px 20px;
  border: 0;
}
.side-cta h3 { font-size: 17px; color: #fff; }
.side-cta p { margin: 10px 0 18px; font-size: 13px; line-height: 1.75; color: var(--on-ink-2); }
.side-cta .btn { width: 100%; }
.side-cta .side-tel {
  display: block;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, .16);
  font-family: var(--mono);
  font-size: 13px;
  color: #fff;
}
.side-cta .side-tel span { display: block; font-size: 10px; letter-spacing: .12em; color: var(--on-ink-2); margin-bottom: 4px; }
.side-sticky { position: sticky; top: calc(var(--header-h) + 24px); }

/* --------------------------------------------------------------------------
   14. 文章页正文
   -------------------------------------------------------------------------- */
.article { border: 1px solid var(--line); background: var(--bone-2); }
.article__head { padding: 34px 38px 26px; border-bottom: 1px solid var(--line); }
.article__cats { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.article__head h1 {
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.32;
  letter-spacing: -.015em;
}
.article__lead {
  margin: 16px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--per);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-2);
}
.article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.article__meta span { display: inline-flex; align-items: center; gap: 6px; }
.article__meta .ic { width: 14px; height: 14px; color: var(--teal-500); }

.article__body { padding: 30px 38px 34px; font-size: 16px; line-height: 1.95; color: #223034; }
.article__body > *:first-child { margin-top: 0; }
.article__body h2 {
  margin: 38px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--per);
  font-size: 21px;
  line-height: 1.45;
}
.article__body h3 { margin: 26px 0 12px; font-size: 17.5px; }
.article__body p { margin: 0 0 18px; }
.article__body a { color: var(--teal-600); text-decoration: underline; text-underline-offset: 3px; }
.article__body a:hover { color: var(--per); }
.article__body strong { font-weight: 800; color: var(--ink-800); }
.article__body ul, .article__body ol { margin: 0 0 20px; display: grid; gap: 10px; }
.article__body ul > li, .article__body ol > li {
  position: relative;
  padding-left: 22px;
  min-width: 0;
}
.article__body ul > li::before {
  content: "";
  position: absolute;
  left: 2px; top: .68em;
  width: 7px; height: 7px;
  background: var(--per);
}
.article__body ol { counter-reset: ol; }
.article__body ol > li { counter-increment: ol; padding-left: 30px; }
.article__body ol > li::before {
  content: counter(ol);
  position: absolute;
  left: 0; top: .18em;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--per);
}
.article__body blockquote {
  margin: 26px 0;
  padding: 20px 24px;
  background: var(--bone);
  border-left: 4px solid var(--teal-500);
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-2);
}
.article__body blockquote p:last-child { margin-bottom: 0; }
.article__body blockquote cite { display: block; margin-top: 10px; font-size: 13px; color: var(--muted); font-style: normal; }
.article__body .tip {
  margin: 24px 0;
  padding: 18px 20px 18px 22px;
  background: var(--per-soft);
  border: 1px solid var(--per-line);
  font-size: 14.5px;
  line-height: 1.85;
}
.article__body .tip strong { color: var(--per-dark); }
.article__table-wrap { margin: 24px 0; border: 1px solid var(--line); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.article__body table { min-width: 520px; font-size: 14px; }
.article__body th, .article__body td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  vertical-align: top;
}
.article__body th { background: var(--bone); font-weight: 700; white-space: nowrap; }
.article__body tr:last-child td { border-bottom: 0; }
.article__body th:last-child, .article__body td:last-child { border-right: 0; }
.article__figure { margin: 26px 0; }
.article__figure figcaption { margin-top: 10px; font-size: 12.5px; color: var(--muted); text-align: center; }

.article__foot { padding: 22px 38px 28px; border-top: 1px solid var(--line); background: var(--bone); }
.article__tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 16px; }
.article__tags strong { font-size: 13px; margin-right: 4px; }
.article__disc { font-size: 12px; line-height: 1.8; color: var(--muted); }

/* 上下篇 */
.post-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 24px; }
.post-nav a {
  display: grid;
  gap: 8px;
  padding: 20px 22px;
  background: var(--bone-2);
  transition: background-color .18s ease, color .18s ease;
  min-width: 0;
}
.post-nav span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted-2);
}
.post-nav .ic { width: 14px; height: 14px; }
.post-nav h3 { font-size: 15px; line-height: 1.5; overflow-wrap: break-word; }
.post-nav a:hover { background: var(--ink-800); color: #fff; }
.post-nav a:hover span { color: var(--per); }
.post-nav a.is-next { text-align: right; justify-items: end; }
.post-nav a.is-next span { flex-direction: row-reverse; }

/* 相关 / 最新文章区块 */
.art-block { margin-top: 44px; }
.art-block__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--text);
}
.art-block__head h2 { font-size: 20px; display: flex; align-items: center; gap: 10px; }
.art-block__head h2 .ic { width: 18px; height: 18px; color: var(--per); }
.art-block__head span {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted-2);
}

/* 目录（文章页侧栏） */
.toc-list { padding: 12px 0 4px; }
.toc-list li { border-bottom: 1px solid var(--line); }
.toc-list li:last-child { border-bottom: 0; }
.toc-list a {
  display: block;
  padding: 10px 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-2);
  border-left: 2px solid transparent;
  padding-left: 10px;
}
.toc-list a:hover { color: var(--per); border-left-color: var(--per); background: var(--bone); }

/* --------------------------------------------------------------------------
   15. 返回顶部
   -------------------------------------------------------------------------- */
.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 80;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--ink-800);
  color: #fff;
  border: 0;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
}
.to-top .ic { width: 20px; height: 20px; }
.to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--per); }

/* --------------------------------------------------------------------------
   16. 入场动画（渐进增强：默认全部可见，仅在 html.js-reveal 时才隐藏）
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 1;
  transform: none;
}
html.js-reveal .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.22, .7, .3, 1);
  will-change: opacity, transform;
}
html.js-reveal .reveal.is-in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js-reveal .reveal,
  html.js-reveal .reveal.is-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .post-card, .post-card:hover,
  .btn, .btn:hover,
  .cat-card, .to-top { transition: none; transform: none; }
}

/* --------------------------------------------------------------------------
   17. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1200px) {
  .layout-side { grid-template-columns: minmax(0, 1fr) 296px; gap: 34px; }
  .link-list--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-inner { gap: 34px; }
}

@media (max-width: 1024px) {
  .nav-main, .header-cta { display: none; }
  .nav-drawer { display: block; }
  .layout-side { grid-template-columns: minmax(0, 1fr); gap: 40px; padding-block: 40px 64px; }
  .col-side { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; align-content: start; align-items: start; }
  .col-side .side-card { margin-bottom: 24px; }
  .side-sticky { position: static; }
  .hero-inner { grid-template-columns: minmax(0, 1fr); padding-block: 60px 54px; }
  .hero-card { max-width: 560px; }
  .lead-inner { grid-template-columns: minmax(0, 1fr); gap: 38px; }
  .cat-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feat-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px 28px; }
  .article__head, .article__body, .article__foot { padding-left: 30px; padding-right: 30px; }
}

@media (max-width: 760px) {
  :root { --pad: 18px; --gap: 18px; --header-h: 64px; }
  body { font-size: 15.5px; }
  .sec { padding: 52px 0; }
  .sec-head { flex-wrap: wrap; align-items: flex-start; gap: 4px 14px; }
  .sec-desc { flex: 1 1 100%; text-align: left; }
  .sec-more { order: 3; }
  .stats ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats li { padding: 20px 16px; }
  .stats li:nth-child(odd) { border-left: 0; padding-left: 0; }
  .stats li:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .hero-points { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .link-list--2, .link-list--3 { grid-template-columns: minmax(0, 1fr); }
  .step-list { grid-template-columns: minmax(0, 1fr); }
  .col-side { grid-template-columns: minmax(0, 1fr); }
  .post-list .post-card { flex-direction: column; }
  .post-list .post-thumb { flex: 0 0 auto; width: 100%; aspect-ratio: 16 / 9; border-right: 0; border-bottom: 1px solid var(--line); }
  .article__head, .article__body, .article__foot { padding-left: 20px; padding-right: 20px; }
  .article__body { font-size: 15.5px; line-height: 1.9; }
  .article__body h2 { font-size: 19px; margin-top: 32px; }
  .post-nav { grid-template-columns: minmax(0, 1fr); }
  .post-nav a.is-next { text-align: left; justify-items: start; }
  .post-nav a.is-next span { flex-direction: row; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .lead-form { padding: 24px 20px 22px; }
  .field-row { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .pager .pager-info { margin-left: 0; flex: 1 1 100%; }
}

@media (max-width: 560px) {
  .cat-list { grid-template-columns: minmax(0, 1fr); }
  .post-row { grid-template-columns: minmax(0, 1fr); }
  .post-row .post-thumb { aspect-ratio: 16 / 9; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .hero-inner { padding-block: 44px 40px; }
  .hero-card { padding: 22px 18px 20px; }
  .hero-card dl { grid-template-columns: minmax(0, 1fr); gap: 2px 0; }
  .hero-card dt { margin-top: 8px; }
  .brand-text strong { font-size: 15.5px; }
  .brand-text em { font-size: 8px; letter-spacing: .14em; }
  .brand-mark { width: 34px; height: 34px; }
  .stats strong { font-size: 24px; }
  .filter-bar { align-items: flex-start; flex-direction: column; }
  .filter-list { gap: 6px; }
  .filter-list button { padding: 5px 10px; font-size: 12.5px; }
  .pager a, .pager span { min-width: 34px; height: 34px; padding: 0 9px; font-size: 12px; }
  .to-top { right: 12px; bottom: 12px; width: 40px; height: 40px; }
  .article__meta { gap: 8px 14px; }
  .lead-way li { flex-wrap: wrap; }
  .lead-way span { margin-left: 0; }
}

@media (max-width: 380px) {
  .brand-text em { display: none; }
  .post-body { padding: 16px 15px; }
}

/* 打印 */
@media print {
  .site-header, .to-top, .lead, .friend-links, .site-footer, .col-side, .pager { display: none !important; }
  .layout-side { grid-template-columns: minmax(0, 1fr); padding: 0; }
  .article { border: 0; }
  html.js-reveal .reveal { opacity: 1; transform: none; }
}