/* ==========================================================================
   茄子视频 mao818.cn — 全站样式表
   base → layout → components → pages → responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

:root {
  --ink: #16232B;
  --ink-soft: #5A6B76;
  --line: #DCE3E8;
  --line-strong: #C3CDD4;
  --bg: #F5F7F8;
  --surface: #FFFFFF;
  --brand: #123C57;
  --brand-deep: #0D2C41;
  --signal: #E8730C;
  --alert: #C0392B;
  --ok: #2E7D5B;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
    "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", "Courier New", monospace;

  --radius: 4px;
  --radius-lg: 8px;
  --shell: 1120px;
  --aside-w: 208px;
  --gutter: 32px;
  --gap: 20px;

  --shadow-card: 0 1px 2px rgba(18, 60, 87, 0.05);
}

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

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

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0;
}

h1 { font-size: 32px; line-height: 1.35; }
h2 { font-size: 22px; line-height: 1.4; }
h3 { font-size: 17px; line-height: 1.5; }
h4 { font-size: 16px; line-height: 1.5; }

p {
  margin: 0 0 12px;
}

p:last-child {
  margin-bottom: 0;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  color: var(--signal);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

figure {
  margin: 0;
}

strong {
  font-weight: 700;
}

dl, dt, dd {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 60;
  padding: 10px 16px;
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius);
  font-size: 14px;
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
}

/* --------------------------------------------------------------------------
   layout — 全站骨架
   -------------------------------------------------------------------------- */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--brand);
  color: #fff;
  border-bottom: 1px solid var(--brand-deep);
}

.site-header__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: #fff;
  flex: 0 0 auto;
}

.brand:hover {
  color: #fff;
}

.brand__name {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.2;
}

.brand__tag {
  font-size: 12px;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.72);
  max-width: 260px;
}

.header-note {
  flex: 1 1 auto;
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.7);
  padding-left: 16px;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
}

.site-nav--header {
  flex: 0 0 auto;
}

.site-nav--header .site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav--header .site-nav__link {
  display: block;
  padding: 8px 11px;
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
}

.site-nav--header .site-nav__link:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.site-nav--header .site-nav__item.is-current .site-nav__link,
.site-nav--header .site-nav__link.is-current {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  font-weight: 700;
}

/* 侧栏 + 主内容 */

.layout-shell,
.page-layout {
  flex: 1 1 auto;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 28px var(--gutter) 56px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.sidebar-left {
  display: grid;
  grid-template-columns: var(--aside-w) minmax(0, 1fr);
  gap: 32px;
}

/* 侧栏位于 body / 祖先节点时的兜底 */
body.sidebar-left,
.site-body.sidebar-left {
  display: grid;
  grid-template-columns: var(--aside-w) minmax(0, 1fr);
  grid-template-areas:
    "header header"
    "aside main"
    "footer footer";
  max-width: none;
  margin: 0;
  padding: 0;
  gap: 0 32px;
}

body.sidebar-left > .site-header,
.site-body.sidebar-left > .site-header { grid-area: header; }
body.sidebar-left > .site-aside,
body.sidebar-left > .site-sidebar,
body.sidebar-left > .site-drawer,
.site-body.sidebar-left > .site-aside,
.site-body.sidebar-left > .site-sidebar,
.site-body.sidebar-left > .site-drawer { grid-area: aside; }
body.sidebar-left > .site-main,
.site-body.sidebar-left > .site-main { grid-area: main; }
body.sidebar-left > .site-footer,
.site-body.sidebar-left > .site-footer { grid-area: footer; }

.site-aside,
.site-sidebar,
.site-drawer {
  position: sticky;
  top: 78px;
  align-self: start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 14px 12px;
  box-shadow: var(--shadow-card);
}

.site-sidebar__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 8px 10px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 10px;
}

.site-sidebar__title {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.drawer-close {
  width: 30px;
  height: 30px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.drawer-close:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.site-nav--side .site-nav__list,
.site-nav--sidebar .site-nav__list,
.site-nav--aside .site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-nav--side .site-nav__link,
.site-nav--sidebar .site-nav__link,
.site-nav--aside .site-nav__link {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 8px 10px;
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
}

.site-nav--side .site-nav__link:hover,
.site-nav--sidebar .site-nav__link:hover,
.site-nav--aside .site-nav__link:hover {
  background: var(--bg);
  color: var(--brand);
}

.site-nav--side .site-nav__item.is-current .site-nav__link,
.site-nav--sidebar .site-nav__item.is-current .site-nav__link,
.site-nav--aside .site-nav__item.is-current .site-nav__link {
  border-left-color: var(--signal);
  background: #EEF2F5;
  color: var(--brand);
  font-weight: 700;
}

.site-nav__icon {
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  border-radius: 3px;
  background: var(--line);
}

.site-nav__item.is-current .site-nav__icon {
  background: var(--signal);
}

.site-nav__label {
  display: block;
}

.aside-note,
.site-sidebar__note {
  margin: 12px 0 0;
  padding: 10px 10px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-soft);
}

.site-main {
  min-width: 0;
  max-width: 760px;
}

.home-main {
  max-width: none;
}

/* 移动端抽屉开关 */

.nav-toggle {
  display: none;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
}

/* 面包屑 / 页面标题区 */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.breadcrumb a {
  color: var(--ink-soft);
}

.breadcrumb a:hover {
  color: var(--signal);
}

.breadcrumb-sep {
  color: var(--line-strong);
}

.breadcrumb-current {
  color: var(--ink);
}

.page-header {
  margin-bottom: 20px;
}

.page-title {
  font-size: 32px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
}

.page-head {
  margin-bottom: 24px;
}

.page-head__eyebrow {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-head__lead,
.page-hero__lead,
.page-intro__lead {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 760px;
}

.page-intro {
  margin-bottom: 28px;
}

/* 页内目录 */

.toc,
.anchor-nav,
.page-toc {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  margin-bottom: 28px;
}

.toc__label,
.toc__title {
  display: block;
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.toc__list,
.anchor-nav__list,
.page-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.anchor-nav__list,
.page-toc__list {
  counter-reset: toc;
}

.toc__link,
.anchor-nav__link,
.page-toc__link {
  display: inline-block;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
}

.toc__link:hover,
.anchor-nav__link:hover,
.page-toc__link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* 页脚 */

.site-footer {
  background: var(--brand-deep);
  color: rgba(255, 255, 255, 0.78);
  margin-top: auto;
}

.site-footer__index {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px var(--gutter) 28px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer-col__title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-col__link {
  color: rgba(255, 255, 255, 0.92);
  font-size: 14px;
  line-height: 1.5;
}

.footer-col__link:hover {
  color: var(--signal);
}

.footer-col__desc {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.55);
}

.site-footer__base {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 20px var(--gutter) 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  align-items: baseline;
}

.site-footer__brand {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
}

.site-footer__position,
.site-footer__note,
.site-footer__copy {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.site-footer__copy {
  flex-basis: 100%;
}

/* --------------------------------------------------------------------------
   components — 通用组件
   -------------------------------------------------------------------------- */

/* 按钮 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.btn--primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.btn--primary:hover {
  background: var(--brand-deep);
  border-color: var(--brand-deep);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--brand);
}

.btn--ghost:hover {
  border-color: var(--brand);
  background: #EEF2F5;
  color: var(--brand-deep);
}

/* 文本链接 */

.text-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
  border-bottom: 2px solid var(--signal);
  padding-bottom: 1px;
}

.text-link:hover {
  color: var(--signal);
}

.link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
  border-bottom: 1px solid var(--line-strong);
}

.link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* 段落头部 */

.block,
.section {
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.block:first-of-type,
.section:first-of-type {
  border-top: 0;
}

.block__head,
.section__head,
.section-head {
  margin-bottom: 20px;
  max-width: 760px;
}

.block__num,
.section__num,
.section__no,
.section-head__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.block__title,
.section__title,
.section-head__title {
  font-size: 22px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 8px;
}

.block__intro,
.section__intro,
.section__lead,
.section-head__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.block__foot,
.section__foot {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.block__outro,
.section__outro {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 状态徽标 */

.status-badge,
.status {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--line-strong);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--ink-soft);
  background: var(--bg);
}

.status-badge--queued,
.status--pending {
  color: var(--ink-soft);
  border-color: var(--line-strong);
  background: #EEF2F5;
}

.status-badge--active,
.status--progress {
  color: var(--signal);
  border-color: rgba(232, 115, 12, 0.4);
  background: #FDF2E7;
}

.status-badge--review {
  color: var(--brand);
  border-color: rgba(18, 60, 87, 0.3);
  background: #EBF1F5;
}

.status-badge--done,
.status--done {
  color: var(--ok);
  border-color: rgba(46, 125, 91, 0.35);
  background: #EAF4EF;
}

/* 图片容器 */

.media,
.figure,
.hero__media,
.toolkit-media {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.media img,
.figure img,
.hero__media img,
.toolkit-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #E4EAEE;
}

.media__caption,
.figure__caption,
.hero__media figcaption,
.toolkit-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.media--wide,
.figure--wide {
  margin: 20px 0;
}

.media--wide img,
.figure--wide img {
  aspect-ratio: 16 / 9;
}

/* 清单 */

.check-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.check-list__item,
.checklist__item,
.check-item__row {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.check-list__item::before,
.checklist__item::before,
.check-item__row::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.68em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--brand);
  border-radius: 1px;
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checklist__mark {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border: 1px solid var(--brand);
  border-radius: 1px;
}

.checklist__box {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 8px;
  border: 1px solid var(--brand);
  border-radius: 2px;
  vertical-align: -1px;
}

/* 异常提示 */

.alert-strip,
.alert-item {
  background: #FCF0EE;
  border: 1px solid rgba(192, 57, 43, 0.28);
  border-left: 3px solid var(--alert);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.alert-strip__title,
.alert-item__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--alert);
}

.alert-strip__body,
.alert-item__text,
.alert-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.alert-item__tag {
  display: inline-block;
  margin-bottom: 6px;
  padding: 1px 8px;
  border-radius: 3px;
  background: var(--alert);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.alert-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* 相关阅读 */

.related-list,
.read-list,
.related__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-item,
.read-list__item,
.related-list__item,
.related__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-item__link,
.read-list__link,
.related-list__link,
.related__link {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand);
}

.related-item__link:hover,
.read-list__link:hover,
.related-list__link:hover,
.related__link:hover {
  color: var(--signal);
}

.related-item__desc,
.read-list__desc,
.related-list__desc,
.related__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.related__title {
  font-size: 22px;
  line-height: 1.4;
  margin: 0 0 16px;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.related-links-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.related-links-item {
  font-size: 14px;
  color: var(--brand);
  border-bottom: 1px solid var(--line-strong);
}

.related-links-item:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* 两列 / 多列容器 */

.two-col,
.columns,
.compare-grid,
.split,
.standards-split,
.toolkit-split,
.review-timing,
.review-grid,
.review-dimensions,
.check-grid,
.grid,
.service-grid,
.scene-grid,
.tool-group {
  display: grid;
  gap: var(--gap);
}

.two-col,
.compare-grid,
.split--2col,
.standards-split,
.toolkit-split,
.columns--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3col,
.review-grid,
.review-timing {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.review-dimensions,
.check-grid,
.tool-group {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

/* 通用卡片 */

.card,
.panel,
.col,
.col-block,
.column,
.compare-col,
.standards-col,
.toolkit-col,
.timing-card,
.dimension,
.check-item,
.review-card,
.service-card,
.service-entry,
.tool-group {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-card);
}

.card__step,
.card__title,
.panel__title,
.col__title,
.col-block__title,
.column__title,
.compare-col__title,
.standards-col__title,
.timing-card__title,
.dimension__title,
.check-item__title,
.review-card__name,
.service-card__name,
.service-entry__name,
.tool-group__title {
  font-size: 17px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 8px;
}

.card__text,
.panel p,
.dimension__desc,
.check-item__desc,
.review-card__text,
.service-card__def,
.service-card__fit,
.service-entry__def,
.tool-group__desc,
.timing-card__desc,
.timing-card__focus {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin: 0 0 8px;
}

.card__list,
.dimension__list,
.check-item__list,
.column__list,
.tool-group__list,
.factors,
.tool-list,
.idea-list,
.myth-list,
.stage-list,
.meeting-steps,
.premise-list,
.plain-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card__list li,
.dimension__item,
.column__item,
.tool-group__item,
.tool-list__item,
.idea-list__item,
.premise-list__item,
.plain-list__item {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.card__list li::before,
.dimension__item::before,
.column__item::before,
.tool-group__item::before,
.tool-list__item::before,
.idea-list__item::before,
.premise-list__item::before,
.plain-list__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--signal);
}

.tool-list__name,
.idea-list__name,
.factors__name {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 2px;
}

.tool-list__text,
.idea-list__text,
.factors__desc {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0;
}

.panel--muted {
  background: #EEF2F5;
  border-color: var(--line-strong);
}

/* FAQ 折叠 */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.faq-item__q,
.faq-item__summary {
  display: block;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-item__summary::after {
  content: "+";
  float: right;
  margin-left: 12px;
  font-family: var(--font-mono);
  color: var(--signal);
}

.faq-item[open] .faq-item__summary::after {
  content: "–";
}

.faq-item__q:hover,
.faq-item__summary:hover {
  color: var(--brand);
}

.faq-item__a,
.faq-item__body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line);
  margin-top: 0;
  padding-top: 12px;
}

.faq-item__body p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin: 0 0 10px;
}

.faq-item__body p:last-child {
  margin-bottom: 0;
}

/* 步骤 / 阶段 */

.step-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-item,
.step-list__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.step-item__no,
.step-list__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--signal);
  padding-top: 2px;
}

.step-item__text,
.step-list__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   pages — 首页
   -------------------------------------------------------------------------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  padding: 8px 0 36px;
  border-bottom: 1px solid var(--line);
}

.hero__text {
  min-width: 0;
}

.hero__eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.hero__text h1 {
  font-size: 36px;
  line-height: 1.3;
  margin: 0 0 12px;
}

.hero__lead {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 520px;
}

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

.hero__media img {
  aspect-ratio: 4 / 3;
}

.service-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.service-card__link,
.service-entry__link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
  border-bottom: 1px solid var(--line-strong);
  align-self: flex-start;
}

.service-card__link:hover,
.service-entry__link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.scene-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.scene-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.scene-item img {
  aspect-ratio: 4 / 3;
}

.scene-item figcaption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.route-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.route-node {
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--signal);
  border-radius: var(--radius);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.route-node__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--signal);
}

.route-node__name {
  font-size: 15px;
  line-height: 1.5;
  margin: 0;
}

.route-node__owner,
.route-node__out {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.route-node .status-badge {
  align-self: flex-start;
  margin-top: auto;
}

.toolkit-split {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
}

.toolkit-media img {
  aspect-ratio: 4 / 3;
}

.review-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* --------------------------------------------------------------------------
   pages — 内页
   -------------------------------------------------------------------------- */

/* 视频服务 */

.service-entry {
  margin-bottom: 16px;
}

.service-entry__meta {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 4px 14px;
  margin: 10px 0 12px;
  font-size: 14px;
  line-height: 1.7;
}

.service-entry__meta dt {
  font-weight: 700;
  color: var(--ink);
}

.service-entry__meta dd {
  color: var(--ink-soft);
}

.page-hero {
  padding-bottom: 12px;
}

/* 制作理念 */

.myth-item {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.myth-item__wrong,
.myth-item__right {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.myth-item__wrong {
  color: var(--alert);
}

.myth-item__right {
  color: var(--ink);
}

.myth-item__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  border-radius: 3px;
  background: var(--alert);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.myth-item__tag--ok {
  background: var(--ok);
}

.checklist-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.media--checklist img {
  aspect-ratio: 3 / 2;
}

.checklist {
  counter-reset: ck;
}

/* 制作流程 */

.stage-item {
  position: relative;
  padding-left: 28px;
}

.stage-item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: -14px;
  width: 1px;
  background: var(--line);
}

.stage-item:last-child::before {
  display: none;
}

.stage-item::after {
  content: "";
  position: absolute;
  left: 2px;
  top: 22px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--signal);
}

.stage-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
}

.stage-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  margin-bottom: 8px;
}

.stage-card__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--signal);
}

.stage-card__title {
  font-size: 17px;
  line-height: 1.5;
  margin: 0;
}

.stage-card__desc {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.stage-card__meta {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 4px 14px;
  font-size: 14px;
  line-height: 1.7;
}

.stage-card__meta-key {
  font-weight: 700;
  color: var(--ink);
}

.stage-card__meta-val {
  color: var(--ink-soft);
}

.stage-card__note {
  margin: 10px 0 0;
  padding: 8px 12px;
  background: #FCF0EE;
  border-left: 3px solid var(--alert);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

/* 工具与设备 */

.tool-group {
  display: block;
  margin-bottom: 16px;
}

/* 交付标准 */

.check-item__row {
  padding-left: 20px;
}

/* 项目复盘 */

.meeting-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.meeting-step:last-child {
  border-bottom: 0;
}

.meeting-step__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--signal);
  margin: 0;
  padding-top: 3px;
}

.meeting-step__title {
  font-size: 16px;
  line-height: 1.5;
  margin: 0;
}

.meeting-step__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.record-fields {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 10px 20px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.record-fields__term {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.record-fields__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* 常见答疑 */

.faq-group {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.faq-group:first-of-type {
  border-top: 0;
}

.faq-next {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.entry-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.entry-list__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.entry-list__link {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand);
}

.entry-list__link:hover {
  color: var(--signal);
}

.entry-list__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages — 404
   -------------------------------------------------------------------------- */

.error-main {
  flex: 1 1 auto;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 48px var(--gutter) 64px;
}

.error-hero {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.error-hero__body {
  max-width: 640px;
}

.error-hero__code {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.error-hero__title {
  font-size: 32px;
  line-height: 1.35;
  margin: 0 0 12px;
}

.error-hero__text {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.error-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-links {
  padding-top: 32px;
}

.error-links__list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.error-links__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.error-links__link {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand);
}

.error-links__link:hover {
  color: var(--signal);
}

.error-links__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.error-links__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1080px) {
  .site-header__inner {
    flex-wrap: wrap;
  }

  .header-note {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav--header {
    flex: 1 1 100%;
  }

  .site-nav--header .site-nav__list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding-top: 10px;
    margin-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
  }

  .site-nav--header .site-nav__list.is-open {
    display: flex;
  }

  .site-nav--header .site-nav__link {
    padding: 12px 12px;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .sidebar-left,
  body.sidebar-left,
  .site-body.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: none;
    gap: 24px;
  }

  .site-aside,
  .site-sidebar,
  .site-drawer {
    position: static;
    display: none;
  }

  .site-aside.is-open,
  .site-sidebar.is-open,
  .site-drawer.is-open {
    display: block;
  }

  .site-nav--side .site-nav__link,
  .site-nav--sidebar .site-nav__link,
  .site-nav--aside .site-nav__link {
    min-height: 44px;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .route-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .scene-grid,
  .review-grid,
  .review-timing,
  .error-links__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  :root {
    --gutter: 20px;
  }

  h1 { font-size: 28px; }
  .page-title { font-size: 28px; }
  .hero__text h1 { font-size: 30px; }

  .layout-shell,
  .page-layout {
    padding: 22px var(--gutter) 44px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .hero__media {
    order: 2;
  }

  .service-grid,
  .scene-grid,
  .review-grid,
  .review-timing,
  .review-dimensions,
  .check-grid,
  .tool-group,
  .two-col,
  .compare-grid,
  .split--2col,
  .standards-split,
  .toolkit-split,
  .columns--two,
  .grid--3col,
  .checklist-block,
  .site-footer__index {
    grid-template-columns: minmax(0, 1fr);
  }

  .route-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .myth-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .record-fields {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px 0;
  }

  .record-fields__desc {
    margin-bottom: 10px;
  }

  .service-entry__meta,
  .stage-card__meta {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px 0;
  }

  .service-entry__meta dd,
  .stage-card__meta-val {
    margin-bottom: 8px;
  }

  .site-footer__base {
    flex-direction: column;
    gap: 6px;
  }
}

@media (max-width: 560px) {
  :root {
    --gutter: 16px;
  }

  body {
    font-size: 15px;
  }

  h1 { font-size: 26px; }
  .page-title { font-size: 26px; }
  .hero__text h1 { font-size: 26px; }
  h2,
  .block__title,
  .section__title,
  .section-head__title { font-size: 20px; }

  .route-strip {
    grid-template-columns: minmax(0, 1fr);
  }

  .route-node {
    border-top-width: 0;
    border-left: 3px solid var(--signal);
  }

  .btn {
    width: 100%;
  }

  .hero__actions,
  .error-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .toc__list,
  .anchor-nav__list,
  .page-toc__list {
    flex-direction: column;
    gap: 8px;
  }

  .stage-item {
    padding-left: 22px;
  }

  .meeting-step {
    grid-template-columns: 32px minmax(0, 1fr);
  }

  .step-item,
  .step-list__item {
    grid-template-columns: 28px minmax(0, 1fr);
  }

  .site-footer__index {
    padding: 32px var(--gutter) 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}