/* AI时代成长指南·AI上手知识库 — 样式（雷达同源视觉重构 · 阶段1）
   依据 docs/11 §4 token、§5 图标、§6-8 组件合同。本地冻结，不引用雷达 CSS。
   视觉基调：米白底 + 浅面板 + 灰绿主色 + 青绿选中 + 深灰蓝图标 + 无衬线 + 8px 圆角。
   避免：紫蓝渐变、后台卡片墙、玻璃效果、深色模式、衬线标题、字符/emoji 图标。 */

/* ---------- §4.1 主色板（冻结自雷达，本地不引用雷达 CSS） ---------- */
:root {
  --gg-bg: #fbfbf8;
  --gg-panel: #ffffff;
  --gg-panel-soft: #f8f8f4;
  --gg-ink: #202831;
  --gg-muted: #686f73;
  --gg-muted-2: #7c817f;
  --gg-line: #dfdfd8;
  --gg-line-soft: #ecece6;
  --gg-soft: #eef2e8;
  --gg-accent: #58753f;
  --gg-accent-ink: #48662f;
  --gg-selection-surface: #f0f3eb;
  --gg-selection-border: #b1bea5;
  --gg-selection-ink: #48662f;
  --gg-nav-icon: #424c55;
  --gg-blue: #315bff;
  --gg-warn: #a15c05;
  --gg-warn-bg: #fff8ea;
  --gg-warn-border: #f0c98d;
  --gg-danger: #9b3a34;
  --gg-danger-bg: #fdf6f5;
  --gg-danger-border: #e3b5b0;
  --gg-shadow: 0 12px 34px rgba(47, 55, 42, 0.06);

  --gg-radius-btn: 8px;
  --gg-radius-card: 8px;
  --gg-radius-panel: 12px;
  --gg-radius-panel-lg: 14px;
  --gg-radius-tag: 5px;

  --gg-font: "Microsoft YaHei", "微软雅黑", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
  --gg-directory-font: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", "微软雅黑", "PingFang SC", sans-serif;
  --gg-read-width: 1000px;
  --gg-page-width: 1680px;
  --gg-content-width: 1320px;
  --gg-header-height: 94px;
}

/* ---------- 基础重置 ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--gg-font);
  background: var(--gg-bg);
  color: var(--gg-ink);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-family: var(--gg-font); color: var(--gg-ink); margin: 0; font-weight: 700; }
p { margin: 0 0 16px; }
a { color: var(--gg-accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
img, svg { display: block; }

/* §10 统一 focus-visible */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid rgba(79, 98, 61, 0.58);
  outline-offset: 2px;
  border-radius: 4px;
}

/* §4.4 reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* ---------- 无障碍辅助 ---------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; left: 12px; top: -60px; z-index: 100;
  padding: 10px 16px; background: var(--gg-panel); border: 1px solid var(--gg-line);
  border-radius: var(--gg-radius-btn); box-shadow: var(--gg-shadow);
  transition: top 0.15s; color: var(--gg-ink);
}
.skip-link:focus { top: 12px; }

/* ---------- §5 图标通用样式 ---------- */
.icon { width: 1em; height: 1em; display: inline-block; vertical-align: -0.15em; flex-shrink: 0; }
.icon use { pointer-events: none; }

/* 数据完成前不展示旧静态文案或空列表，避免刷新时闪出另一套首页。 */
.app-boot {
  min-height: calc(100vh - var(--gg-header-height));
  display: none;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--gg-muted);
  font-size: 15px;
}
.app-loading .app-boot { display: flex; }
.app-loading .view, .app-loading .site-footer { visibility: hidden; }
.app-boot-mark {
  width: 38px; height: 38px; border-radius: 7px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; background: var(--gg-accent);
}
.app-boot-mark .icon { width: 23px; height: 23px; }

/* ---------- §6 顶部标题栏 ---------- */
.site-header {
  background: var(--gg-panel);
  border-bottom: 1px solid var(--gg-line);
  box-shadow: 0 1px 0 rgba(55, 51, 42, 0.025);
  position: sticky;
  top: 0;
  z-index: 40;
}
.header-inner {
  max-width: var(--gg-page-width);
  min-height: var(--gg-header-height);
  margin: 0 auto;
  padding: 16px 40px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--gg-ink);
  text-decoration: none;
  flex: 0 0 300px;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 50px;
  height: 50px;
  border-radius: 9px;
  background: var(--gg-accent);
  box-shadow: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.brand-mark .icon { width: 30px; height: 30px; color: #fff; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 23px; font-weight: 750; letter-spacing: -0.02em; }
.brand-text em { font-size: 14px; font-weight: 500; color: var(--gg-muted); font-style: normal; margin-top: 3px; }

.search-form { flex: 1; display: flex; gap: 0; max-width: 700px; margin: 0 auto; }
.search-field { position: relative; flex: 1; display: flex; align-items: center; }
.search-field > .icon {
  position: absolute; left: 17px; z-index: 1;
  width: 18px; height: 18px; color: #59636b; pointer-events: none;
}
.search-form input {
  flex: 1; width: 100%; height: 48px;
  border: 1px solid var(--gg-line); border-right: 0;
  border-radius: var(--gg-radius-btn) 0 0 var(--gg-radius-btn);
  background: var(--gg-panel); padding: 0 18px 0 46px;
  font-size: 17px; color: var(--gg-ink); font-family: inherit;
}
.search-form input:focus-visible {
  border-color: var(--gg-line);
  outline: none;
  box-shadow: none;
}
.search-form button {
  height: 48px; padding: 0 22px;
  border: 1px solid var(--gg-accent); border-radius: 0 var(--gg-radius-btn) var(--gg-radius-btn) 0;
  background: var(--gg-accent); color: #fff;
  font-size: 14px; font-weight: 650;
  display: inline-flex; align-items: center; gap: 6px;
}
.search-form button:hover { background: var(--gg-accent-ink); border-color: var(--gg-accent-ink); }
.search-form button .icon { width: 16px; height: 16px; }

.workstation-link {
  display: inline-flex; align-items: center; gap: 6px;
  height: 48px; padding: 0 18px;
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-btn);
  background: var(--gg-panel); color: var(--gg-ink);
  font-size: 14px; text-decoration: none; flex-shrink: 0;
}
.workstation-link:hover { background: var(--gg-soft); text-decoration: none; }
.workstation-link .icon { width: 16px; height: 16px; color: var(--gg-muted); }

/* 纯图标按钮通用（打印等） */
.btn-icon {
  display: inline-flex; align-items: center; gap: 6px;
  height: 40px; padding: 0 12px;
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-btn);
  background: var(--gg-panel); color: var(--gg-ink);
  font-size: 14px; font-family: inherit;
}
.btn-icon:hover { background: var(--gg-soft); }
.btn-icon .icon { width: 18px; height: 18px; color: var(--gg-accent-ink); }

/* ---------- 通用外壳 ---------- */
.section-shell { max-width: var(--gg-content-width); margin: 0 auto; padding: 0; }
.view { padding-bottom: 40px; }
.section-heading { margin: 48px 0 22px; }
.eyebrow {
  font-size: 15px; color: var(--gg-accent-ink); font-weight: 750;
  letter-spacing: 0.04em; margin: 0 0 8px;
}
.section-heading h2 { font-size: 30px; line-height: 1.35; font-weight: 750; color: var(--gg-ink); }
.section-sub { color: var(--gg-muted); margin: 8px 0 0; font-size: 15px; }
.release-meta { color: var(--gg-muted-2); font-size: 13px; margin: 0 0 8px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.release-meta .icon { width: 14px; height: 14px; color: var(--gg-muted); }
.empty-state {
  padding: 22px; border: 1px dashed var(--gg-line); border-radius: var(--gg-radius-panel);
  color: var(--gg-muted); background: var(--gg-panel-soft); font-size: 15px;
}
.load-error { color: var(--gg-danger); font-weight: 600; }
.loading-note { color: var(--gg-muted); }
mark { background: #ffe8b8; color: inherit; padding: 0 2px; border-radius: 2px; }

/* ---------- §9.1 Hero ---------- */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(350px, .72fr); gap: 46px;
  min-height: 414px;
  padding-top: 46px; padding-bottom: 34px; align-items: start;
}
.scope-card { margin-top: 10px; }
.hero-copy .eyebrow { font-size: 15px; margin-bottom: 8px; }
.hero-copy h1 {
  font-size: clamp(40px, 3.5vw, 52px); line-height: 1.22; font-weight: 700;
  margin: 0 0 14px; color: var(--gg-ink); letter-spacing: -0.035em;
}
/* hero 标题换行用 span，桌面两行、小屏一行一段，不用 <br> */
.hero-copy h1 em { font-style: normal; color: var(--gg-accent-ink); display: inline; }
.hero-key-break { display: inline; }
.hero-copy h1 br { display: none; }
.hero-copy .lead { font-size: 17px; line-height: 1.72; color: var(--gg-muted); margin: 0 0 24px; max-width: 42em; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-actions .primary-action { min-width: 258px; }
.hero-actions .ghost-action { min-width: 238px; }
.primary-action, .ghost-action {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 22px; border-radius: var(--gg-radius-btn);
  font-family: var(--gg-font);
  font-weight: 750; font-size: 16px; text-decoration: none;
  transition: background 0.16s ease, transform 0.1s ease;
}
.primary-action { background: var(--gg-accent); color: #fff; border: 1px solid var(--gg-accent); }
.primary-action:hover { background: var(--gg-accent-ink); border-color: var(--gg-accent-ink); text-decoration: none; }
.ghost-action { background: var(--gg-panel); color: var(--gg-accent-ink); border: 1px solid var(--gg-line); }
.ghost-action:hover { background: var(--gg-soft); border-color: var(--gg-accent); text-decoration: none; }
.hero-actions .icon { width: 17px; height: 17px; }
.hero-actions .primary-action .icon { margin-left: 4px; }

/* 编辑承诺：文字与成长路径插画同卡。 */
.scope-card {
  position: relative;
  min-height: 286px;
  overflow: hidden;
  background: var(--gg-panel);
  border: 1px solid var(--gg-line);
  border-radius: var(--gg-radius-panel);
  padding: 30px 24px 24px;
  box-shadow: none;
}
.scope-card::after {
  content: "";
  position: absolute; right: -64px; top: -94px;
  width: 230px; height: 230px; border-radius: 50%;
  background: #f1f3ed;
}
.scope-copy { position: relative; z-index: 2; width: 68%; }
.scope-visual {
  position: absolute; z-index: 1; right: -4px; bottom: -4px;
  width: 61%; max-width: 270px; opacity: .98;
}
.scope-visual svg { width: 100%; height: auto; }
.scope-tag {
  display: inline-flex; align-items: center; min-height: 34px;
  font-size: 12px; font-weight: 700;
  color: var(--gg-accent-ink); background: var(--gg-soft);
  border-radius: 5px; padding: 0 13px; margin-bottom: 14px;
}
.scope-card p { margin: 0 0 14px; color: var(--gg-ink); font-size: 14px; line-height: 1.75; }
.scope-card .plain-note { color: var(--gg-muted); font-size: 13px; border-top: 1px solid var(--gg-line-soft); padding-top: 13px; margin-bottom: 0; }

/* ---------- 五条主线（编号路径轴） ---------- */
.growth-lines {
  background: rgba(255,255,255,.76);
  border: 1px solid var(--gg-line-soft);
  border-radius: var(--gg-radius-card);
  padding: 18px 28px 24px;
}
.growth-lines .section-heading { margin: 0 0 20px; }
.growth-lines .section-heading h2 { font-size: 28px; }
.growth-lines .lines-track {
  position: relative;
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 0;
}
.growth-lines .lines-track::before {
  content: "";
  position: absolute; left: 3%; right: 3%; top: 20px;
  height: 1px; background: #bdc7b5;
}
.line-step {
  position: relative; padding: 0 10px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.line-index {
  position: relative; z-index: 1;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--gg-panel); border: 2px solid var(--gg-accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: var(--gg-accent);
  font-variant-numeric: tabular-nums;
  box-shadow: 0 0 0 5px rgba(255,255,255,.85);
}
.line-copy { display: grid; gap: 2px; }
.line-label { font-size: 15px; color: var(--gg-ink); font-weight: 700; line-height: 1.4; }
.line-description { font-size: 13px; color: var(--gg-muted-2); line-height: 1.4; }

/* ---------- 按人群找（七类入口） ---------- */
.audiences { padding-top: 16px; }
.audiences .section-heading { margin: 0 0 18px; }
.audiences .section-heading h2 { font-size: 30px; }
.audiences .section-sub { margin-top: 3px; font-size: 15px; }
.audience-grid {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.audience-entry a, .audience-entry-link {
  min-height: 96px;
  display: grid; grid-template-columns: 52px minmax(0,1fr) 16px; align-items: center; gap: 12px;
  padding: 12px 14px; background: var(--gg-panel);
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-card);
  color: var(--gg-ink); text-decoration: none;
  transition: border-color 0.16s ease, transform 0.1s ease, box-shadow .16s ease;
}
.audience-entry a:hover, .audience-entry-link:hover { border-color: var(--gg-selection-border); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(55,72,43,.055); text-decoration: none; }
.audience-icon {
  width: 52px; height: 52px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--gg-accent-ink);
  background: var(--gg-soft);
}
.audience-icon .icon { width: 31px; height: 31px; }
.audience-copy { min-width: 0; display: grid; gap: 3px; }
.audience-label { font-size: 16px; line-height: 1.4; font-weight: 700; color: var(--gg-ink); margin: 0; }
.audience-problem { font-size: 14px; color: var(--gg-muted); line-height: 1.55; }
.audience-arrow { width: 15px; height: 15px; color: var(--gg-accent-ink); }
.audience-entry-link .audience-problem { font-size: 14px; }
.audience-entry-link:hover { background: var(--gg-panel-soft); }

/* ---------- §8.3 内容卡片 ---------- */
.article-cards { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
/* 「查看完整 N 篇」入口：列表下方明显可点的次级链接，桌面与 390 都清晰可见 */
.more-link { margin: 16px 0 0; }
.more-link a {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 18px; min-height: 44px;
  background: var(--gg-selection-surface); border: 1px solid var(--gg-selection-border);
  border-radius: var(--gg-radius-btn);
  color: var(--gg-selection-ink); font-weight: 650; font-size: 15px; text-decoration: none;
}
.more-link a:hover { background: var(--gg-soft); border-color: var(--gg-accent); text-decoration: none; }
.article-card a {
  display: block; padding: 18px 22px; background: var(--gg-panel);
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-card);
  color: var(--gg-ink); text-decoration: none;
  transition: border-color 0.16s ease, transform 0.1s ease;
}
.article-card a:hover { border-color: var(--gg-accent); transform: translateY(-1px); text-decoration: none; }
.card-title { font-size: 19px; font-weight: 750; color: var(--gg-ink); margin: 0 0 7px; line-height: 1.42; }
.card-desc { font-size: 15px; color: var(--gg-muted); margin: 0 0 12px; line-height: 1.65; }
.card-meta { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--gg-muted-2); margin: 0; flex-wrap: wrap; }
.card-meta .icon { width: 14px; height: 14px; color: var(--gg-muted); }
.card-time { display: inline-flex; align-items: center; gap: 4px; }
.card-tags { display: inline-flex; gap: 6px; }
.card-rt { display: inline-flex; font-size: 12px; color: var(--gg-warn); background: var(--gg-warn-bg); border: 1px solid var(--gg-warn-border); padding: 2px 8px; border-radius: var(--gg-radius-tag); }
.card-cat { color: var(--gg-muted); }

/* 搜索结果卡 */
.article-card a.card, .card { display: block; padding: 16px 20px; background: var(--gg-panel); border: 1px solid var(--gg-line); border-radius: var(--gg-radius-card); color: var(--gg-ink); text-decoration: none; transition: border-color 0.16s ease; }
.article-card a.card:hover, .card:hover { border-color: var(--gg-accent); text-decoration: none; }

/* §4.2 标签 */
.card-tag, .meta-chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 10px; border-radius: var(--gg-radius-tag);
  font-size: 12px; font-weight: 600; line-height: 1.6;
  background: #f8fafc; border: 1px solid #d7dee8; color: #475467;
}
.article-cards.is-reading-path { counter-reset: reading-step; gap: 10px; }
.article-cards.is-reading-path .article-card { counter-increment: reading-step; position: relative; }
.article-cards.is-reading-path .article-card a { padding-left: 72px; }
.article-cards.is-reading-path .article-card::before {
  content: counter(reading-step, decimal-leading-zero);
  position: absolute; z-index: 1; left: 20px; top: 21px;
  width: 34px; height: 34px; display: grid; place-items: center;
  border: 1.5px solid var(--gg-selection-border); border-radius: 50%;
  color: var(--gg-accent-ink); background: var(--gg-soft);
  font-size: 12px; font-weight: 750;
}
.tag-audience, .card-tag.tag-audience { background: #fff8ea; border-color: #f0c98d; color: #7a4812; }
.tag-tool, .card-tag.tag-tool { background: #effbf8; border-color: #a9ddd5; color: #285f58; }
.tag-learn, .card-tag.tag-learn { background: #f1f8ff; border-color: #b9d9f7; color: #315b63; }
.tag-prompt, .card-tag.tag-prompt { background: #fbf4ff; border-color: #e2c7f3; color: #684277; }
.tag-case, .card-tag.tag-case { background: #f5f5ff; border-color: #cfd3fb; color: #4d518c; }
.tag-warn, .card-tag.tag-warn { background: #fff8ea; border-color: #f0c98d; color: #8a4b08; }
.tag-member, .card-tag.tag-member { background: #f2f0ff; border-color: #cbc4ef; color: #51458b; }

/* ---------- §8.1 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: var(--gg-radius-btn);
  font-size: 15px; font-weight: 650; text-decoration: none;
  border: 1px solid transparent; font-family: inherit; min-height: 44px;
}
.btn-primary { background: var(--gg-accent); color: #fff; }
.btn-primary:hover { background: var(--gg-accent-ink); text-decoration: none; }
.btn-ghost { background: var(--gg-panel); color: var(--gg-ink); border-color: var(--gg-line); }
.btn-ghost:hover { background: var(--gg-soft); text-decoration: none; }
.btn-link { background: transparent; color: var(--gg-accent-ink); padding: 0; height: auto; min-height: 0; }
.btn-link:hover { text-decoration: underline; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; }

/* ---------- 首页「更多栏目」入口网格 ---------- */
.cat-hub-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.cat-hub-link, .cat-hub-item a {
  display: grid; gap: 4px; padding: 18px 20px; background: var(--gg-panel);
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-card);
  color: var(--gg-ink); text-decoration: none; transition: border-color 0.16s ease;
}
.cat-hub-link:hover, .cat-hub-item a:hover { border-color: var(--gg-accent); text-decoration: none; }
.cat-hub-label { font-size: 16px; font-weight: 700; color: var(--gg-accent-ink); }
.cat-hub-sub { font-size: 13px; color: var(--gg-muted); }
.cat-hub-count { font-size: 12px; color: var(--gg-muted); margin-top: 4px; }
.cat-hub-item-wide, .cat-hub-item-wide .cat-hub-link { grid-column: 1 / -1; }
.cat-hub-group-head { display: grid; gap: 4px; padding: 16px 18px; background: var(--gg-panel-soft); border: 1px dashed var(--gg-line); border-radius: var(--gg-radius-card); margin-bottom: 10px; }
.cat-hub-children { display: flex; flex-wrap: wrap; gap: 8px; }
.cat-hub-item a.cat-hub-child {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; min-height: 40px;
  background: var(--gg-selection-surface); border: 1px solid var(--gg-selection-border);
  border-radius: 5px;
  font-size: 14px; color: var(--gg-accent-ink); text-decoration: none;
}
.cat-hub-item a.cat-hub-child:hover { background: var(--gg-soft); border-color: var(--gg-accent); text-decoration: none; }
.cat-hub-child .icon { width: 15px; height: 15px; color: var(--gg-nav-icon); }

/* ---------- §9.3 文章页 ---------- */
.breadcrumbs { font-size: 13px; color: var(--gg-muted); margin: 24px 0 8px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.breadcrumbs a { color: var(--gg-muted); }
.breadcrumbs a:hover { color: var(--gg-accent-ink); }
.breadcrumbs span[aria-hidden] { color: var(--gg-line); }

.article-toolbar { display: flex; align-items: flex-start; gap: 12px; justify-content: space-between; margin: 8px 0 16px; }
.article-toolbar .article-title { flex: 1; }
#article-title, .article-title {
  font-size: 38px; line-height: 1.25; font-weight: 750; color: var(--gg-ink);
  margin: 8px 0 16px; letter-spacing: -0.01em;
}
.article-body { max-width: var(--gg-read-width); margin: 0; }
.article-head { margin-bottom: 8px; }
/* 引导结论：无大背景，左细线（避免与 30秒形成两个近似绿块） */
.article-one-line {
  display: flex; align-items: flex-start; gap: 10px;
  border-left: 3px solid var(--gg-accent);
  padding: 6px 0 6px 14px; margin: 0 0 24px;
  font-size: 17px; font-weight: 650; color: var(--gg-accent-ink); line-height: 1.6;
}

.article-body h2 { font-size: 26px; line-height: 1.35; font-weight: 750; color: var(--gg-ink); margin: 36px 0 14px; }
.article-body h3 { font-size: 20px; line-height: 1.45; font-weight: 750; color: var(--gg-ink); margin: 24px 0 10px; }
.article-body p { margin: 0 0 16px; font-size: 17px; color: var(--gg-ink); overflow-wrap: anywhere; }

/* §8.5 callout 变体（30秒=浅绿灰唯一绿卡；key=暖；warning=橙；tip=蓝） */
.callout {
  padding: 14px 18px; border-radius: var(--gg-radius-panel); margin: 0 0 24px;
  border: 1px solid var(--gg-line);
}
.callout.variant-conclusion { background: #eef2e7; border-color: #cdd9c0; border-left: 4px solid var(--gg-accent); border-radius: 0 var(--gg-radius-panel) var(--gg-radius-panel) 0; }
.callout.variant-key { background: var(--gg-warn-bg); border-color: var(--gg-warn-border); }
.callout.variant-warning { background: var(--gg-warn-bg); border-color: var(--gg-warn-border); }
.callout.variant-tip { background: #f0f3eb; border-color: #cbd6c0; border-left: 4px solid var(--gg-accent); border-radius: 0 var(--gg-radius-panel) var(--gg-radius-panel) 0; }
.callout .label { font-weight: 700; color: var(--gg-accent-ink); margin-right: 6px; }
.callout.variant-key .label, .callout.variant-warning .label { color: var(--gg-warn); }
.callout.variant-tip .label { color: var(--gg-accent-ink); }
.callout p { margin: 0; font-size: 16px; }

/* list 变体 */
.block-list { padding-left: 22px; margin: 0 0 20px; list-style: disc; }
.block-list li { margin-bottom: 8px; font-size: 16px; }
.block-list.variant-do { list-style: none; padding-left: 0; }
.block-list.variant-do li::before { content: "✓ "; color: var(--gg-accent); font-weight: 700; }
.block-list.variant-dont { list-style: none; padding-left: 0; }
.block-list.variant-dont li::before { content: "✕ "; color: var(--gg-warn); font-weight: 700; }
.block-list.variant-myth { list-style: none; padding-left: 0; }
.block-list.variant-myth li::before { content: "— "; color: var(--gg-warn); font-weight: 700; }
.block-list.variant-summary li::marker { color: var(--gg-accent); }

/* §8.5 类比四件套 */
.analogy-block {
  background: var(--gg-panel); border: 1px solid var(--gg-line);
  border-radius: var(--gg-radius-panel); padding: 22px 24px; margin: 0 0 24px;
}
.analogy-heading { font-size: 14px; color: var(--gg-accent-ink); margin: 0 0 10px; font-weight: 700; }
.analogy-everyday { font-size: 17px; color: var(--gg-ink); margin: 0 0 14px; font-weight: 500; }
.analogy-maps, .analogy-boundary, .analogy-mistake { font-size: 15px; margin: 0 0 8px; }
.analogy-boundary {
  background: var(--gg-warn-bg); border: 1px solid var(--gg-warn-border); border-radius: var(--gg-radius-card);
  padding: 12px 14px; color: var(--gg-warn); font-size: 15px; margin-top: 8px;
}
.analogy-boundary .label { color: var(--gg-warn); }
.analogy-mistake { color: var(--gg-muted); margin-bottom: 0; }
.analogy-maps .label, .analogy-mistake .label { color: var(--gg-accent-ink); font-weight: 700; }

/* §8.5 小实验（浅面板，不再用深墨绿反色块） */
.experiment-block {
  background: var(--gg-panel-soft); border: 1px solid var(--gg-line);
  border-radius: var(--gg-radius-panel); padding: 18px 22px; margin: 0 0 24px;
}
.experiment-heading { color: var(--gg-accent-ink); font-size: 16px; margin: 0 0 8px; }
.experiment-block p { margin: 0; color: var(--gg-ink); font-size: 16px; }

/* 下一步提示 */
.next-tease {
  background: var(--gg-panel-soft); border: 1px solid var(--gg-line); border-radius: var(--gg-radius-panel);
  padding: 14px 18px; margin: 0 0 20px; font-size: 15px; color: var(--gg-ink);
}

/* 步骤 */
.steps-block { list-style: none; padding: 0; margin: 0 0 20px; display: grid; gap: 10px; }
.steps-block li { display: flex; gap: 12px; align-items: flex-start; background: var(--gg-panel); border: 1px solid var(--gg-line); border-radius: var(--gg-radius-card); padding: 12px 16px; }
.step-num { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: var(--gg-accent); color: #fff; display: grid; place-items: center; font-size: 13px; font-weight: 700; }

/* §8.5 对比表（表头深度适中，不用近黑大色块） */
.compare-table { width: 100%; border-collapse: collapse; margin: 0 0 20px; font-size: 15px; }
.compare-table th { background: var(--gg-soft); color: var(--gg-accent-ink); padding: 12px 14px; text-align: left; font-weight: 700; border-bottom: 1px solid var(--gg-line); }
.compare-table td { border: 1px solid var(--gg-line); padding: 12px 14px; background: var(--gg-panel); }
.compare-table td:first-child { color: var(--gg-warn); }

/* 代码 / prompt 块（保留深色等宽区，仅用于真代码） */
.code-block, .prompt-block {
  background: #1f2622; color: #e6ece7; padding: 16px 18px;
  border-radius: var(--gg-radius-card); overflow-x: auto; margin: 0 0 20px;
  font-family: "JetBrains Mono", "Fira Code", Consolas, monospace; font-size: 14px; line-height: 1.6;
  word-break: break-all; overflow-wrap: anywhere;
}
.code-block code, .prompt-block code { background: none; color: inherit; }
.prompt-note { font-size: 13px; color: var(--gg-muted); margin: -12px 0 20px; }

/* 图片 / 画廊 / 视频 */
.image-block, .gallery-block, .video-block { margin: 0 0 20px; }
.image-block img, .gallery-block img { max-width: 100%; border-radius: var(--gg-radius-card); border: 1px solid var(--gg-line); }
.image-block figcaption, .gallery-block figcaption, .video-block figcaption { font-size: 13px; color: var(--gg-muted); margin-top: 6px; }
.gallery-block { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.gallery-block figure { margin: 0; min-width: 0; }
.gallery-image-link { display: block; border-radius: var(--gg-radius-card); overflow: hidden; background: var(--gg-panel-soft); }
.gallery-image-link img { display: block; width: 100%; height: auto; transition: transform .18s ease; }
@media (hover: hover) { .gallery-image-link:hover img { transform: scale(1.012); } }
.video-block video { max-width: 100%; border-radius: var(--gg-radius-card); border: 1px solid var(--gg-line); }

/* 来源 / 购买 */
.source-block { font-size: 14px; color: var(--gg-muted); margin: 0 0 16px; }
.source-block .label { color: var(--gg-accent-ink); }
.purchase-block { background: var(--gg-warn-bg); border: 1px solid var(--gg-warn-border); border-radius: var(--gg-radius-panel); padding: 16px 20px; margin: 0 0 20px; }
.sku-note { font-size: 13px; color: var(--gg-muted); margin: 6px 0 0; }

/* ---------- §8.4 信息卡（三层：CTA/chips + 快速判断 + details 详细） ---------- */
.meta-card {
  margin: 0 0 24px; padding: 18px 20px; background: var(--gg-panel);
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-panel);
}
.meta-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 14px; }
.meta-actions:empty, .meta-card .meta-actions:last-child { margin-bottom: 0; }
.meta-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; min-height: 40px;
  background: var(--gg-accent); color: #fff;
  border-radius: var(--gg-radius-btn); font-weight: 650; font-size: 15px; text-decoration: none;
  transition: background 0.16s ease;
}
.meta-cta:hover { background: var(--gg-accent-ink); text-decoration: none; }
.meta-cta .icon { width: 16px; height: 16px; color: #fff; }
.meta-chips { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.meta-grid { display: grid; grid-template-columns: auto 1fr; gap: 8px 18px; margin: 0; font-size: 15px; }
.meta-grid dt { color: var(--gg-muted); white-space: nowrap; }
.meta-grid dd { margin: 0; color: var(--gg-ink); }
.meta-primary { margin-bottom: 0; }
.meta-details { margin-top: 10px; border-top: 1px dashed var(--gg-line); padding-top: 6px; }
/* §5 details chevron 用 SVG 旋转，不用字符 ▸▾ */
.meta-details > summary {
  cursor: pointer; list-style: none; font-size: 13px; color: var(--gg-accent-ink);
  padding: 6px 0; user-select: none; font-weight: 650;
  display: inline-flex; align-items: center; gap: 6px;
}
.meta-details > summary::-webkit-details-marker { display: none; }
.meta-details > summary .icon { width: 14px; height: 14px; transition: transform 0.16s ease; color: var(--gg-accent); }
.meta-details[open] > summary .icon { transform: rotate(180deg); }
.meta-details > summary:hover { text-decoration: underline; }
.meta-secondary { margin-top: 6px; }

/* ---------- §5.1 工具多入口候选区（docs/10） ---------- */
.tool-options { margin: 0 0 24px; }
.tool-selection-summary {
  margin: 0 0 14px; padding: 12px 16px;
  background: var(--gg-panel-soft); border: 1px solid var(--gg-line);
  border-left: 3px solid var(--gg-accent);
  border-radius: var(--gg-radius-panel);
  font-size: 15px; color: var(--gg-ink); line-height: 1.6;
}
.tool-option-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.tool-option-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 16px 18px; background: var(--gg-panel);
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-card);
}
/* recommended 轻量强调（非广告化）：左强调线 + 极轻底色 */
.tool-option-card.is-recommended { border-left: 3px solid var(--gg-accent); background: var(--gg-panel); }
.tool-option-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.tool-option-name { font-size: 17px; font-weight: 750; color: var(--gg-ink); }
.tool-fit-tag {
  display: inline-flex; align-items: center;
  padding: 2px 10px; border-radius: var(--gg-radius-tag);
  font-size: 12px; font-weight: 600;
  background: var(--gg-soft); border: 1px solid var(--gg-line); color: var(--gg-accent-ink);
}
.tool-rec-badge {
  display: inline-flex; align-items: center;
  padding: 2px 10px; border-radius: var(--gg-radius-tag);
  font-size: 12px; font-weight: 700;
  background: var(--gg-selection-surface); border: 1px solid var(--gg-selection-border); color: var(--gg-selection-ink);
}
.tool-rec-reason { margin: 2px 0 0; font-size: 13px; color: var(--gg-muted); line-height: 1.5; width: 100%; }
.tool-option-bestfor { margin: 0; font-size: 14px; color: var(--gg-ink); line-height: 1.6; }
.tool-option-details { margin-top: 2px; border-top: 1px dashed var(--gg-line); padding-top: 6px; }
.tool-option-details > summary {
  cursor: pointer; list-style: none; font-size: 13px; color: var(--gg-accent-ink);
  padding: 4px 0; user-select: none; font-weight: 650;
  display: inline-flex; align-items: center; gap: 6px;
}
.tool-option-details > summary::-webkit-details-marker { display: none; }
.tool-option-details > summary .icon { width: 14px; height: 14px; transition: transform 0.16s ease; color: var(--gg-accent); }
.tool-option-details[open] > summary .icon { transform: rotate(180deg); }
.tool-option-actions { margin-top: auto; padding-top: 6px; }
.tool-whole-details { margin-top: 14px; }

/* ---------- 来源区（正文后可信度说明） ---------- */
.provenance {
  margin: 32px 0 8px; padding: 18px 20px; background: var(--gg-panel-soft);
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-panel); font-size: 14px;
}
.prov-sources ul { list-style: none; padding: 0; margin: 6px 0 0; }
.prov-sources li { margin: 4px 0; color: var(--gg-ink); }
.prov-sources a { color: var(--gg-accent-ink); display: inline-flex; align-items: center; gap: 4px; }
.prov-sources a .icon { width: 13px; height: 13px; color: var(--gg-blue); }
.src-verified { color: var(--gg-muted); margin-left: 4px; }
.prov-label { font-weight: 700; color: var(--gg-accent-ink); margin: 0 0 8px; }
.src-scope { display: block; color: var(--gg-muted); font-size: 12px; margin: 2px 0 6px; }
.prov-verified { margin: 12px 0 0; color: var(--gg-muted); font-size: 13px; }
.prov-meta { display: grid; grid-template-columns: auto 1fr; gap: 6px 18px; margin: 14px 0 0; }
.prov-meta dt { color: var(--gg-muted); }
.prov-meta dd { margin: 0; color: var(--gg-ink); }
.staleness-note { margin: 10px 0 0; padding: 10px 12px; background: var(--gg-warn-bg); border: 1px solid var(--gg-warn-border); border-radius: var(--gg-radius-card); color: var(--gg-warn); font-size: 13px; line-height: 1.5; display: flex; gap: 8px; align-items: flex-start; }
.staleness-note .icon { width: 16px; height: 16px; color: var(--gg-warn); flex-shrink: 0; margin-top: 2px; }

/* ---------- 上一篇/下一篇/相关阅读 ---------- */
.article-next { max-width: var(--gg-read-width); margin: 32px 0 0; display: flex; gap: 12px; flex-wrap: wrap; }
.next-link {
  display: flex; flex-direction: column; gap: 4px; padding: 16px 20px; flex: 1;
  background: var(--gg-selection-surface); border: 1px solid var(--gg-selection-border); border-radius: var(--gg-radius-card);
  color: var(--gg-ink); text-decoration: none; transition: border-color 0.16s ease;
}
.next-link:hover { border-color: var(--gg-accent); text-decoration: none; }
.next-link.prev-link { color: var(--gg-muted-2); background: var(--gg-panel-soft); }
.next-link { margin-left: auto; }
.next-label { font-size: 12px; color: var(--gg-muted); }
.next-title { font-size: 16px; color: var(--gg-accent-ink); font-weight: 650; }

.related { max-width: var(--gg-read-width); margin: 32px 0 0; }
.related h2 { font-size: 18px; color: var(--gg-muted); margin: 0 0 12px; }
.related-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.related-list a { display: block; padding: 12px 16px; background: var(--gg-selection-surface); border: 1px solid var(--gg-selection-border); border-radius: var(--gg-radius-card); color: var(--gg-ink); }
.related-list a:hover { border-color: var(--gg-accent); text-decoration: none; }

/* 预渲染文章底部阅读去向（与 SPA 同构） */
.article-nav { max-width: var(--gg-read-width); margin: 32px 0 0; }
.article-prev-next { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.nav-link {
  display: flex; flex-direction: column; gap: 4px; padding: 16px 18px;
  background: var(--gg-selection-surface); border: 1px solid var(--gg-selection-border); border-radius: var(--gg-radius-card);
  color: var(--gg-ink); text-decoration: none; transition: border-color 0.16s ease;
}
.nav-link:hover { border-color: var(--gg-accent); text-decoration: none; }
.nav-link-label { font-size: 12px; color: var(--gg-muted); }
.nav-link-title { font-size: 16px; color: var(--gg-accent-ink); font-weight: 650; }
.article-related { margin-top: 20px; }
.article-related .related-label { font-size: 16px; color: var(--gg-muted); margin: 0 0 10px; }
.article-related ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.article-related li a { display: block; padding: 10px 14px; background: var(--gg-selection-surface); border: 1px solid var(--gg-selection-border); border-radius: var(--gg-radius-card); color: var(--gg-ink); }
.article-related li a:hover { border-color: var(--gg-accent); text-decoration: none; }

/* ---------- §9.6 会员锁定卡（纯视觉组件，docs/11 §9.6 文案；不接鉴权） ---------- */
.lock-card {
  border: 1px solid var(--gg-selection-border); border-radius: var(--gg-radius-panel);
  background: var(--gg-selection-surface); padding: 26px; max-width: 600px; margin: 24px 0;
}
.lock-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.lock-head h3 { font-size: 18px; }
.lock-head .icon { width: 22px; height: 22px; color: var(--gg-accent-ink); }
.lock-desc { color: var(--gg-ink); font-size: 15px; margin-bottom: 8px; }
.lock-note { color: var(--gg-muted); font-size: 13px; margin-bottom: 18px; line-height: 1.7; }
.lock-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- 人群页 ---------- */
.problem-list { list-style: none; padding: 0; margin: 0 0 32px; display: grid; gap: 10px; }
.problem-list li { display: flex; gap: 10px; align-items: center; font-size: 16px; color: var(--gg-ink); background: var(--gg-panel); border: 1px solid var(--gg-line); border-radius: var(--gg-radius-card); padding: 12px 16px; }
.problem-dot { color: var(--gg-warn); display: inline-flex; }
.problem-dot .icon { width: 10px; height: 10px; }
.problem-entry { padding: 0; }
.problem-link { display: flex; gap: 10px; align-items: center; text-decoration: none; color: var(--gg-ink); width: 100%; box-sizing: border-box; padding: 12px 16px; }
.problem-link:hover { background: var(--gg-panel-soft); text-decoration: none; }
.problem-text { flex: 1; }
.problem-action { font-size: 13px; color: var(--gg-accent-ink); white-space: nowrap; display: inline-flex; align-items: center; gap: 4px; }
.problem-action .icon { width: 13px; height: 13px; }
#audience-view-title, #category-title, #search-title { font-size: 34px; line-height: 1.3; color: var(--gg-ink); margin: 8px 0 12px; font-weight: 750; }
.subsection-title { font-size: 20px; color: var(--gg-ink); margin: 0 0 16px; }
.audience-group { list-style: none; margin-bottom: 28px; }
.audience-group-title { font-size: 17px; color: var(--gg-accent-ink); margin: 0 0 12px; font-weight: 700; }
.article-cards.nested { margin: 0; }
.audience-overview-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}
.problem-list.audience-overview-grid > li {
  padding: 0;
  display: block;
  border: 0;
  background: transparent;
}
.audience-overview-grid .audience-entry a {
  min-height: 116px;
  height: 100%;
  grid-template-columns: 58px minmax(0, 1fr) 18px;
  padding: 18px;
}
.audience-overview-grid .audience-icon { width: 58px; height: 58px; }
.audience-overview-grid .audience-icon .icon { width: 33px; height: 33px; }
.audience-overview-grid .audience-label { font-size: 18px; }
.audience-overview-grid .audience-problem { font-size: 15px; }

/* ---------- 左侧导航 + 双栏布局 ---------- */
.layout {
  display: grid; grid-template-columns: 260px minmax(0, 1fr);
  max-width: var(--gg-page-width); margin: 0 auto; gap: 0; align-items: start; padding: 0;
}
.side-nav {
  position: sticky; top: var(--gg-header-height); align-self: start;
  min-height: calc(100vh - var(--gg-header-height));
  padding: 28px 20px 24px;
  border-right: 1px solid var(--gg-line);
  max-height: calc(100vh - var(--gg-header-height)); overflow-y: auto;
  background: rgba(255,255,255,.72);
}
.side-nav-head { display: none; align-items: center; justify-content: space-between; padding: 0 4px 12px; }
.side-nav-head .side-nav-heading { margin: 0; }
.side-nav-heading { font-size: 12px; color: var(--gg-muted); margin: 0 12px 10px; letter-spacing: 0.05em; font-weight: 700; }
.side-nav-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.side-nav-list a, .side-nav-list .nav-group-toggle {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; min-height: 48px;
  border-radius: var(--gg-radius-btn);
  border-left: 5px solid transparent;
  color: var(--gg-ink); font-size: 16px; font-weight: 500; text-decoration: none;
  font-family: var(--gg-directory-font);
  background: transparent; border-top: none; border-right: none; border-bottom: none;
  width: 100%; text-align: left; font-family: inherit;
}
.side-nav-list a:hover, .side-nav-list .nav-group-toggle:hover {
  background: rgba(109, 129, 86, 0.075);
  color: var(--gg-accent-ink); text-decoration: none;
}
.side-nav-list a:hover svg, .side-nav-list .nav-group-toggle:hover svg { color: var(--gg-accent-ink); }
.side-nav-list a svg, .side-nav-list .nav-group-toggle svg { color: var(--gg-nav-icon); flex-shrink: 0; width: 22px; height: 22px; }
.side-nav-list a.is-active {
  background: var(--gg-selection-surface); color: var(--gg-selection-ink);
  font-weight: 700; border-left-color: var(--gg-accent);
}
.side-nav-list a.is-active svg { color: var(--gg-selection-ink); }

.nav-group { display: grid; gap: 2px; }
.nav-group-toggle { justify-content: space-between; }
.nav-group-toggle .nav-group-label { display: flex; align-items: center; gap: 10px; }
.nav-group-toggle .nav-caret { transition: transform 0.16s ease; color: var(--gg-muted); width: 16px; height: 16px; display: inline-flex; }
.nav-group-toggle .nav-caret .icon { width: 16px; height: 16px; color: var(--gg-muted); }
.nav-group-toggle[aria-expanded="true"] .nav-caret { transform: rotate(180deg); }
.nav-group-toggle.is-active { color: var(--gg-selection-ink); font-weight: 700; border-left-color: var(--gg-accent); background: var(--gg-selection-surface); }
.nav-sub-list { list-style: none; padding: 0; margin: 0; display: none; gap: 2px; padding-left: 14px; }
.nav-sub-list.is-open { display: grid; }
.nav-sub-list a { padding: 9px 12px; font-size: 15px; min-height: 41px; }
.nav-sub-list a svg { width: 18px; height: 18px; }
#main { min-width: 0; padding: 0 32px; }

/* 小屏抽屉触发按钮 + 遮罩 + 关闭按钮（桌面隐藏） */
.nav-drawer-toggle { display: none; }
.nav-drawer-overlay { display: none; }
.nav-drawer-close { display: none; }

/* ---------- §8.2 搜索与筛选 ---------- */
.search-filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; }
.filter-chip {
  height: 36px; padding: 0 14px;
  border: 1px solid var(--gg-line); border-radius: var(--gg-radius-tag);
  background: var(--gg-panel); color: var(--gg-muted); font-size: 14px; font-family: inherit;
  display: inline-flex; align-items: center; gap: 6px;
}
.filter-chip:hover { border-color: var(--gg-selection-border); color: var(--gg-ink); }
.filter-chip.is-active, .filter-chip[aria-pressed="true"] {
  background: var(--gg-selection-surface); border-color: var(--gg-selection-border);
  color: var(--gg-selection-ink); font-weight: 700;
}

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--gg-line); background: var(--gg-panel-soft); margin-top: 40px; }
.footer-inner { max-width: var(--gg-content-width); margin: 0 auto; padding: 28px 24px; display: grid; gap: 6px; }
.footer-brand { font-weight: 700; color: var(--gg-accent-ink); margin: 0; }
.footer-note { color: var(--gg-muted-2); font-size: 12px; margin: 0; }
.footer-disclaimer { color: var(--gg-muted); font-size: 13px; margin: 6px 0 0; max-width: 52em; }

/* 预渲染与会员壳没有侧栏，使用同一阅读起点，不继承 SPA 的双栏内边距。 */
html[data-prerendered-article] .header-inner,
html[data-member-shell] .header-inner { justify-content: space-between; }
html[data-prerendered-article] #main,
html[data-member-shell] #main {
  width: min(var(--gg-content-width), calc(100% - 48px));
  margin: 0 auto;
  padding: 0;
}
html[data-prerendered-article] #view-article,
html[data-member-shell] #view-article {
  max-width: var(--gg-read-width);
  margin-right: auto;
  margin-left: auto;
}

/* ---------- 杂项 ---------- */
.noscript-banner { padding: 14px 20px; background: var(--gg-warn); color: #fff; font-size: 14px; }
.noscript-banner code { background: rgba(0,0,0,0.2); padding: 2px 6px; border-radius: 4px; }
.back-to-top {
  position: fixed; right: 24px; bottom: 24px;
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid var(--gg-line); background: var(--gg-panel); color: var(--gg-accent-ink);
  cursor: pointer; box-shadow: var(--gg-shadow); z-index: 50;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background 0.15s, opacity 0.15s;
}
.back-to-top:hover { background: var(--gg-soft); }
.back-to-top .icon { width: 20px; height: 20px; }

@media (max-width: 1280px) {
  .header-inner { padding-right: 24px; padding-left: 24px; }
  .brand { flex-basis: 250px; }
  .search-form { max-width: 560px; }
  .layout { grid-template-columns: 244px minmax(0, 1fr); }
  .side-nav { padding-right: 18px; padding-left: 18px; }
  #main { padding-right: 28px; padding-left: 32px; }
  .hero { grid-template-columns: minmax(0, 1.15fr) minmax(350px, .9fr); gap: 32px; }
  .hero-copy h1 { font-size: clamp(38px, 4vw, 48px); }
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 打印样式：只印文章正文 */
@media print {
  .site-header, .side-nav, .article-toolbar button, .article-next, .related,
  .breadcrumbs, .back-to-top, .site-footer, #search-filters { display: none !important; }
  .layout { display: block; }
  body { background: #fff; color: #000; font-size: 12pt; }
  .article-body { max-width: 100%; }
  a { color: #000; text-decoration: none; }
}

/* ---------- §10 小屏 390px ---------- */
@media (max-width: 860px) {
  .header-inner { flex-wrap: wrap; gap: 10px; padding: 10px 16px; }
  .site-header { position: relative; }
  .brand { flex: 1 1 auto; min-width: 0; }
  .brand-text strong { font-size: 18px; }
  .brand-text em { display: none; }
  .brand-mark { width: 40px; height: 40px; }
  .brand-mark .icon { width: 22px; height: 22px; }
  .workstation-link .label { display: none; }
  .workstation-link { padding: 8px 10px; }
  .workstation-link .icon { width: 18px; height: 18px; }
  .search-form { order: 3; max-width: 100%; flex-basis: 100%; margin: 0; }

  .nav-drawer-toggle {
    display: inline-flex; align-items: center; gap: 8px;
    margin: 12px 0 0; height: 44px; padding: 0 16px;
    background: var(--gg-panel); border: 1px solid var(--gg-line);
    border-radius: var(--gg-radius-btn); font-size: 14px; color: var(--gg-accent-ink); font-weight: 650;
    width: fit-content;
  }
  .nav-drawer-toggle[aria-expanded="true"] { background: var(--gg-accent); color: #fff; border-color: var(--gg-accent); }
  .nav-drawer-toggle svg, .nav-drawer-toggle .icon { color: currentColor; width: 20px; height: 20px; }
  .drawer-bars { display: none; }
  .nav-drawer-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 40; }
  .nav-drawer-overlay.is-visible { display: block; }
  .nav-drawer-close {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; background: none; border: none; color: var(--gg-muted);
  }
  .nav-drawer-close .icon { width: 20px; height: 20px; }
  .side-nav-head { display: flex; }

  .layout { grid-template-columns: 1fr; padding: 0 16px; }
  .side-nav {
    position: fixed; top: 0; left: 0; bottom: 0; width: 80vw; max-width: 320px;
    background: var(--gg-panel); border-right: 1px solid var(--gg-line); padding: 16px 18px;
    transform: translateX(-100%); transition: transform 0.2s ease; z-index: 50;
    overflow-y: auto; max-height: 100vh;
  }
  .side-nav.is-drawer-open { transform: translateX(0); box-shadow: var(--gg-shadow); }
  /* 抽屉内子项由 JS .is-open 控制，不在此强制 grid */
  #main { padding-right: 0; padding-left: 0; }

  .hero { grid-template-columns: 1fr; padding-top: 28px; }
  .hero-copy h1 { font-size: 27px; line-height: 1.32; }
  .hero-copy h1 em { display: block; }
  .hero-copy .lead { font-size: 16px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .primary-action, .hero-actions .ghost-action { width: 100%; min-width: 0; }
  .scope-card { min-height: 280px; padding: 30px 24px; }
  .scope-copy { width: 100%; }
  .scope-visual { width: 52%; opacity: .2; }
  .growth-lines .lines-track { grid-template-columns: 1fr; position: relative; }
  .growth-lines .lines-track::before {
    content: ""; position: absolute; left: 13px; top: 6px; bottom: 6px;
    right: auto; width: 2px; height: auto; background: var(--gg-line);
  }
  .line-step {
    text-align: left; padding: 9px 8px; border-top: none;
    flex-direction: row; align-items: center; justify-content: flex-start;
    min-height: 40px; position: relative; z-index: 1;
  }
  .line-step::after { display: none; }
  .line-index {
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--gg-panel); border: 2px solid var(--gg-accent);
    color: var(--gg-accent); display: inline-flex; align-items: center; justify-content: center;
    font-size: 12px;
  }
  .line-copy { gap: 0; }
  .line-label { font-size: 14px; }

  .audience-grid, .audience-overview-grid, .cat-hub-grid { grid-template-columns: 1fr; }
  /* 390 工具候选：单列，快速层全部直接可见（无外层折叠/状态机），每张 details 默认收起 */
  .tool-option-cards { grid-template-columns: 1fr; }
  .gallery-block { grid-template-columns: 1fr; }
  .section-heading h2 { font-size: 23px; }
  #article-title, .article-title { font-size: 26px; }
  .article-body h2 { font-size: 22px; }
  .article-body p, .article-body li { font-size: 16px; }
  .article-one-line { font-size: 16px; }
  .article-prev-next { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .header-inner { padding: 8px 12px; }
  .section-shell { padding: 0 16px; }
  .lock-card { padding: 20px 18px; }
  .lock-actions { display: grid; grid-template-columns: 1fr; }
  .lock-actions .primary-action, .lock-actions .ghost-action { width: 100%; }
  .back-to-top { right: 14px; bottom: 14px; width: 40px; height: 40px; }
}