/* ==========================================================================
   麻花天美 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版基础
   -------------------------------------------------------------------------- */
:root {
  --paper: #F7F4EE;
  --ink: #1B1B20;
  --ink-soft: #5C5C66;
  --rule: #D9D3C7;
  --signal: #0E6B5E;
  --amber: #C8862B;
  --paper-raised: #FCFAF5;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, monospace;

  --wrap: 1080px;
  --wrap-pad: 24px;
  --read: 720px;
  --header-h: 64px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body.site-body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

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

figure {
  margin: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0;
  line-height: 1.35;
}

h2 {
  font-size: clamp(20px, 2.4vw, 26px);
}

h3 {
  font-size: 17px;
  line-height: 1.5;
}

p {
  margin: 0 0 1.1em;
  max-width: var(--read);
}

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

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

a {
  color: var(--signal);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, opacity 160ms ease;
}

a:hover {
  color: #0a4f45;
}

button {
  font-family: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  font-size: 14px;
  transition: top 160ms ease;
}

.skip-link:focus {
  top: 12px;
  color: var(--paper);
}

/* --------------------------------------------------------------------------
   layout：页头、主容器、内页骨架、页脚
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper-raised);
  border-bottom: 1px solid var(--rule);
}

.site-header.is-scrolled {
  box-shadow: 0 2px 10px rgba(27, 27, 32, 0.06);
}

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--wrap-pad);
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--ink);
}

.brand:hover {
  color: var(--ink);
}

.brand-mark {
  width: 24px;
  height: 24px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 24px;
  text-align: center;
  border-radius: 2px;
  flex: 0 0 auto;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  color: var(--ink);
  border-bottom: 2px solid transparent;
  line-height: 1.4;
}

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

.nav-link.is-current {
  border-bottom-color: var(--ink);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
}

.site-main {
  display: block;
}

.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--wrap-pad) 72px;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--wrap-pad) 72px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

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

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

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

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

.page-header {
  padding: 18px 0 0;
}

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
  letter-spacing: 0.01em;
  margin: 0;
}

.page-head {
  padding: 12px 0 22px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 36px;
}

.page-head .kicker {
  display: block;
  margin-bottom: 8px;
}

.page-lede,
.lede {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: var(--read);
  margin: 0;
}

.site-footer {
  background: var(--ink);
  color: #E6E2D9;
  margin-top: 0;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 48px var(--wrap-pad) 32px;
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) minmax(160px, 1fr) minmax(160px, 1fr);
  gap: 40px;
}

.footer-col {
  min-width: 0;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: #F7F4EE;
  margin: 0 0 10px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.75;
  color: #B4AFA4;
  margin: 0;
  max-width: 320px;
}

.footer-heading {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: #8F8A80;
  margin: 0 0 14px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-links a {
  font-size: 14px;
  color: #E6E2D9;
  display: inline-block;
  padding: 2px 0;
}

.footer-links a:hover {
  color: #7FD3C4;
}

.footer-bottom {
  border-top: 1px solid #33333A;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--wrap-pad) 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: baseline;
  justify-content: space-between;
}

.footer-bottom p {
  margin: 0;
  font-size: 13px;
  color: #9C978D;
  max-width: none;
}

.footer-bottom a {
  color: #7FD3C4;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: #7C776E;
}

/* --------------------------------------------------------------------------
   components：通用文字元素、链接、标签、图版、相关入口
   -------------------------------------------------------------------------- */
.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--signal);
  text-transform: none;
}

.section-lede {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
  margin: 10px 0 26px;
  max-width: var(--read);
}

.text-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--signal);
  border-bottom: 1px solid rgba(14, 107, 94, 0.35);
  padding-bottom: 2px;
}

.text-link:hover {
  color: #0a4f45;
  border-bottom-color: #0a4f45;
}

figure figcaption {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin-top: 10px;
}

/* 图版统一：细描边 + 稳定比例 */
.hero-visual img,
.archive-figure img,
.dossier-figure img,
.check-figure img,
.changelog-visual img,
.doc-figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper-raised);
  object-fit: cover;
}

/* 相关入口条（内页共用） */
.related-strip {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
}

.related-strip h2,
.related-title {
  font-size: 18px;
  margin-bottom: 18px;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.related-links a,
.related-link {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  transition: border-color 160ms ease, color 160ms ease;
}

.related-links a:hover,
.related-link:hover {
  border-color: var(--signal);
  color: var(--signal);
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.hero-intro {
  padding: 56px 0 0;
  max-width: 780px;
}

.hero-intro .kicker {
  margin-bottom: 14px;
}

.hero-intro h1 {
  font-family: var(--font-serif);
  font-size: clamp(30px, 4.6vw, 46px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.28;
  letter-spacing: 0.01em;
  margin: 0 0 18px;
}

.hero-intro .lede {
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.hero-visual {
  margin-top: 36px;
  position: relative;
}

.hero-visual img {
  aspect-ratio: 16 / 7;
  max-height: 420px;
}

/* 四个编号索引入口：叠压在主视觉底边上 */
.entry-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: -44px;
  position: relative;
  z-index: 2;
  padding: 0 8px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 118px;
  padding: 18px 18px 20px;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: 6px;
  color: var(--ink);
  transition: border-color 160ms ease, transform 160ms ease;
}

.entry-card:hover {
  border-color: var(--signal);
  color: var(--ink);
  transform: translateY(-2px);
}

.entry-card .index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
}

.entry-card strong {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
}

.entry-card .entry-desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* 题材家族概览 */
.topic-families {
  margin-top: 64px;
}

.topic-families h2 {
  margin-bottom: 4px;
}

.family-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.family-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  overflow: hidden;
  transition: border-color 160ms ease;
}

.family-card:hover {
  border-color: var(--signal);
}

.family-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-bottom: 1px solid var(--rule);
  transition: transform 160ms ease;
}

.family-card:hover img {
  transform: scale(1.02);
}

.family-card h3 {
  padding: 14px 16px 0;
  font-size: 16px;
}

.family-card p {
  padding: 6px 16px 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0;
  max-width: none;
}

.family-card .shape-tag {
  margin: 12px 16px 16px;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--signal);
  border: 1px solid rgba(14, 107, 94, 0.3);
  border-radius: 3px;
  padding: 2px 8px;
}

/* 本期专题解读：左文右注 */
.feature-dossier {
  margin-top: 64px;
  padding-top: 36px;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: minmax(0, 1.9fr) minmax(240px, 1fr);
  gap: 40px;
  align-items: start;
}

.dossier-excerpt h2 {
  margin-bottom: 16px;
}

.dossier-excerpt p {
  max-width: 640px;
}

.dossier-excerpt .conclusion {
  margin-top: 18px;
  padding: 14px 0 14px 16px;
  border-left: 2px solid var(--signal);
  font-weight: 600;
  color: var(--ink);
  background: rgba(14, 107, 94, 0.04);
  max-width: 640px;
}

.dossier-excerpt .text-link {
  margin-top: 18px;
}

.dossier-note {
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  padding: 20px;
}

.dossier-note .note-title {
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--ink);
}

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

.dossier-note .note-list li {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.dossier-note .note-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.dossier-note .note-type {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--amber);
  margin-bottom: 4px;
}

/* 播放核对提示条 */
.playback-prompt {
  margin-top: 64px;
  padding: 30px 32px 32px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--amber);
  border-radius: 6px;
  background: var(--paper-raised);
}

.playback-prompt h2 {
  margin-bottom: 4px;
}

.playback-prompt .check-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin: 20px 0 24px;
}

.playback-prompt .check-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  min-width: 0;
}

.playback-prompt .check-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--amber);
  flex: 0 0 auto;
  padding-top: 2px;
}

.playback-prompt .check-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  max-width: none;
  min-width: 0;
}

/* 修订记录摘要 */
.revision-brief {
  margin-top: 64px;
  padding-top: 36px;
  border-top: 1px solid var(--rule);
}

.revision-brief h2 {
  margin-bottom: 20px;
}

.revision-list {
  display: flex;
  flex-direction: column;
}

.revision-item {
  display: grid;
  grid-template-columns: 96px 84px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--rule);
}

.revision-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.revision-item .version {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
}

.revision-item .tag {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  white-space: nowrap;
}

.revision-item .tag-add {
  color: var(--signal);
  border-color: rgba(14, 107, 94, 0.3);
}

.revision-item .tag-adjust {
  color: var(--amber);
  border-color: rgba(200, 134, 43, 0.4);
}

.revision-item .tag-fix {
  color: var(--ink-soft);
  border-color: var(--rule);
}

.revision-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  max-width: none;
  min-width: 0;
}

.revision-brief .text-link {
  margin-top: 20px;
}

/* 反馈入口条 */
.feedback-strip {
  margin-top: 56px;
  padding: 28px 32px;
  background: var(--ink);
  color: #E6E2D9;
  border-radius: 6px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 32px;
}

.feedback-strip h2 {
  color: #F7F4EE;
  font-size: 18px;
  margin: 0;
  flex: 0 0 auto;
}

.feedback-strip p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #B4AFA4;
  max-width: 560px;
  flex: 1 1 320px;
}

.strip-link {
  flex: 0 0 auto;
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid #7FD3C4;
  border-radius: 4px;
  color: #7FD3C4;
  font-size: 14px;
  font-weight: 600;
  transition: background 160ms ease, color 160ms ease;
}

.strip-link:hover {
  background: #7FD3C4;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   pages：内容资料库（左侧锚点导航 + 右侧分组档案）
   -------------------------------------------------------------------------- */
.sidebar-left .page-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.anchor-nav {
  position: sticky;
  top: 88px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  padding: 18px 16px;
}

.anchor-heading {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 0 0 12px;
}

.anchor-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.anchor-link {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
  border-left: 2px solid transparent;
  border-radius: 0 3px 3px 0;
}

.anchor-link:hover {
  background: rgba(14, 107, 94, 0.06);
  color: var(--signal);
}

.anchor-link.is-current {
  border-left-color: var(--signal);
  color: var(--signal);
  font-weight: 600;
  background: rgba(14, 107, 94, 0.06);
}

.content {
  min-width: 0;
}

.archive-figure {
  margin-bottom: 40px;
}

.archive-figure img {
  aspect-ratio: 16 / 6;
}

.family-group {
  padding-top: 32px;
  margin-top: 32px;
  border-top: 1px solid var(--rule);
}

.family-group:first-of-type {
  padding-top: 0;
  margin-top: 0;
  border-top: 0;
}

.family-group h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.family-group .sec-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  font-weight: 400;
}

.group-intro {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 22px;
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.archive-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  overflow: hidden;
  min-width: 0;
  transition: border-color 160ms ease;
}

.archive-card:hover {
  border-color: var(--signal);
}

.archive-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--rule);
  transition: transform 160ms ease;
}

.archive-card:hover img {
  transform: scale(1.02);
}

.archive-card h3 {
  padding: 14px 16px 0;
  font-size: 16px;
}

.archive-card p {
  padding: 6px 16px 0;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: none;
}

.archive-card .entry-shape {
  margin: 12px 16px 16px;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--signal);
  border: 1px solid rgba(14, 107, 94, 0.3);
  border-radius: 3px;
  padding: 2px 8px;
}

.entry-shape-note {
  padding-top: 32px;
  margin-top: 36px;
  border-top: 1px solid var(--rule);
}

.entry-shape-note h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.entry-shape-note .sec-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  font-weight: 400;
}

.entry-shape-note > p {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.shape-table {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--rule);
}

.shape-table dt {
  padding: 12px 16px 12px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  border-bottom: 1px solid var(--rule);
}

.shape-table dd {
  margin: 0;
  padding: 12px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  min-width: 0;
}

/* --------------------------------------------------------------------------
   pages：专题解读（长文）
   -------------------------------------------------------------------------- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  z-index: 120;
  pointer-events: none;
}

.reading-progress-bar {
  display: block;
  height: 100%;
  width: 0;
  background: var(--signal);
  transition: width 80ms linear;
}

.page-title-block {
  padding: 12px 0 22px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 36px;
}

.page-title-block .kicker {
  display: block;
  margin-bottom: 8px;
}

.page-title-block .lede {
  margin: 0;
}

.dossier-article {
  max-width: 720px;
  min-width: 0;
}

.standfirst {
  font-size: 18px;
  line-height: 1.8;
  color: var(--ink);
  padding-bottom: 18px;
  border-bottom: 2px solid var(--signal);
  margin-bottom: 32px;
  max-width: 720px;
}

.dossier-figure {
  margin-bottom: 40px;
}

.dossier-figure img {
  aspect-ratio: 16 / 7;
}

.dossier-section {
  padding-top: 8px;
  margin-bottom: 36px;
}

.dossier-section h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.dossier-section .section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  font-weight: 400;
}

.dossier-section p {
  max-width: 720px;
}

.dossier-section .note {
  margin: 18px 0;
  padding: 14px 18px;
  border-left: 2px solid var(--amber);
  background: rgba(200, 134, 43, 0.06);
  border-radius: 0 4px 4px 0;
  max-width: 720px;
}

.dossier-section .note .note-type {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--amber);
  margin-bottom: 4px;
}

.dossier-section .note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: none;
}

.dossier-section .conclusion {
  margin-top: 16px;
  padding: 14px 0 14px 16px;
  border-left: 2px solid var(--signal);
  font-weight: 600;
  color: var(--ink);
  max-width: 720px;
}

.dossier-summary,
.dossier-notes,
.dossier-archive {
  padding-top: 30px;
  margin-top: 36px;
  border-top: 1px solid var(--rule);
}

.dossier-summary h2,
.dossier-notes h2,
.dossier-archive h2 {
  margin-bottom: 14px;
}

.summary-intro {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 18px;
}

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

.summary-list li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.summary-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.summary-list .summary-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  padding-top: 2px;
}

.summary-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  max-width: none;
  min-width: 0;
}

.dossier-notes .note-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dossier-notes .note-list li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.dossier-notes .note-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.dossier-notes .note-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--amber);
  padding-top: 2px;
}

.dossier-notes .note-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: none;
  min-width: 0;
}

.dossier-archive > p {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.archive-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.archive-link {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper-raised);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

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

.clear-reading-btn {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: transparent;
  font-size: 14px;
  color: var(--ink);
  transition: border-color 160ms ease, color 160ms ease;
}

.clear-reading-btn:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.clear-reading-note {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 560px;
}

/* --------------------------------------------------------------------------
   pages：播放核对
   -------------------------------------------------------------------------- */
.content-wrap {
  min-width: 0;
}

.check-intro {
  margin-bottom: 32px;
}

.check-intro h2 {
  margin-bottom: 12px;
}

.check-intro p {
  max-width: 720px;
}

.check-figure {
  margin-bottom: 40px;
}

.check-figure img {
  aspect-ratio: 16 / 6;
}

.check-list {
  display: block;
}

.check-block {
  padding: 26px 0;
  border-top: 1px solid var(--rule);
}

.check-block:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.check-block h3 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 18px;
  margin-bottom: 14px;
}

.check-block .check-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  font-weight: 400;
}

.check-table {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 0;
  margin: 0;
}

.check-table dt {
  padding: 10px 16px 10px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  border-top: 1px solid var(--rule);
}

.check-table dd {
  margin: 0;
  padding: 10px 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  border-top: 1px solid var(--rule);
  min-width: 0;
}

.check-table dt:first-of-type,
.check-table dd:first-of-type {
  border-top: 0;
}

.check-order {
  padding-top: 30px;
  margin-top: 20px;
  border-top: 1px solid var(--rule);
}

.check-order h2 {
  margin-bottom: 16px;
}

.order-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  counter-reset: order;
  margin-bottom: 18px;
}

.order-list li {
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 720px;
  counter-increment: order;
}

.order-list li::before {
  content: counter(order, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  line-height: 1.9;
}

.order-tail {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0;
}

/* --------------------------------------------------------------------------
   pages：修订记录
   -------------------------------------------------------------------------- */
.changelog-intro {
  margin-bottom: 32px;
}

.changelog-intro h2 {
  margin-bottom: 12px;
}

.changelog-intro p {
  max-width: 720px;
}

.changelog-visual {
  margin-bottom: 40px;
}

.changelog-visual img {
  aspect-ratio: 16 / 6;
}

.change-section {
  padding-top: 26px;
  margin-bottom: 8px;
  border-top: 1px solid var(--rule);
}

.change-section h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.change-section .section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  font-weight: 400;
}

.change-added h2 .section-index {
  color: var(--signal);
}

.change-adjusted h2 .section-index {
  color: var(--amber);
}

.change-fixed h2 .section-index {
  color: var(--ink-soft);
}

.change-list {
  display: flex;
  flex-direction: column;
}

.change-item {
  border-top: 1px solid var(--rule);
}

.change-item:first-child {
  border-top: 0;
}

.change-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 16px 0;
}

.change-row .version {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
}

.change-body {
  min-width: 0;
}

.change-tag {
  display: inline-block;
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 1px 8px;
  border-radius: 3px;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  max-width: none;
}

.tag-added {
  color: var(--signal);
  border-color: rgba(14, 107, 94, 0.3);
}

.tag-adjusted {
  color: var(--amber);
  border-color: rgba(200, 134, 43, 0.4);
}

.tag-fixed {
  color: var(--ink-soft);
  border-color: var(--rule);
}

.change-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 720px;
}

.recheck-section {
  padding-top: 30px;
  margin-top: 36px;
  border-top: 1px solid var(--rule);
}

.recheck-section h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.recheck-section .section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  font-weight: 400;
}

.recheck-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

.recheck-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 720px;
}

.recheck-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 1px;
  background: var(--signal);
}

.recheck-link {
  font-size: 15px;
  margin: 0;
  max-width: 720px;
}

.recheck-link a {
  font-weight: 600;
  border-bottom: 1px solid rgba(14, 107, 94, 0.35);
  padding-bottom: 2px;
}

/* --------------------------------------------------------------------------
   pages：反馈说明
   -------------------------------------------------------------------------- */
.checkup-block {
  margin-bottom: 36px;
}

.checkup-block h2 {
  margin-bottom: 10px;
}

.section-intro {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 18px;
  max-width: 720px;
}

.checkup-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: checkup;
}

.checkup-list li {
  position: relative;
  padding-left: 38px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 720px;
  counter-increment: checkup;
}

.checkup-list li::before {
  content: counter(checkup, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  line-height: 1.9;
}

.doc-figure {
  margin-bottom: 40px;
}

.doc-figure img {
  aspect-ratio: 16 / 6;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}

.type-col {
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  padding: 24px;
  min-width: 0;
}

.type-col h2 {
  margin-bottom: 10px;
  font-size: 20px;
}

.type-scope {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 18px;
  max-width: none;
}

.type-col h3 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--ink);
}

.type-info-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.type-info-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.type-info-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--signal);
}

.type-col > p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: none;
}

.expectation-block {
  padding-top: 30px;
  margin-top: 40px;
  border-top: 1px solid var(--rule);
}

.expectation-block h2 {
  margin-bottom: 12px;
}

.expectation-block p {
  max-width: 720px;
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--wrap-pad) 72px;
}

.error-block {
  max-width: 720px;
  padding: 72px 0 40px;
}

.error-block .kicker {
  display: block;
  margin-bottom: 12px;
}

.error-block h1 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
  margin: 0 0 16px;
}

.error-paths {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 28px 0 32px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}

.error-paths a {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--signal);
  padding: 6px 0;
}

.error-paths a:hover {
  color: #0a4f45;
}

.btn-home {
  display: inline-block;
  padding: 11px 22px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  transition: background 160ms ease;
}

.btn-home:hover {
  background: var(--signal);
  color: var(--paper);
}

/* --------------------------------------------------------------------------
   responsive：960px 与 640px 两级断点
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .header-inner {
    gap: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    margin-left: 0;
    background: var(--paper-raised);
    border-bottom: 1px solid var(--rule);
    box-shadow: 0 8px 18px rgba(27, 27, 32, 0.08);
    padding: 8px var(--wrap-pad) 16px;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-link {
    display: flex;
    align-items: center;
    min-height: 48px;
    font-size: 16px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 0 4px;
  }

  .nav-link.is-current {
    border-left-color: var(--ink);
    border-bottom-color: transparent;
    padding-left: 10px;
  }

  .entry-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 24px;
    padding: 0;
  }

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

  .feature-dossier {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .playback-prompt .check-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .sidebar-left .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .anchor-nav {
    position: static;
    padding: 12px 14px;
  }

  .anchor-list {
    flex-direction: row;
    gap: 4px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .anchor-list li {
    flex: 0 0 auto;
  }

  .anchor-link {
    border-left: 0;
    border-bottom: 2px solid transparent;
    border-radius: 3px 3px 0 0;
    white-space: nowrap;
    padding: 8px 12px;
  }

  .anchor-link.is-current {
    border-left-color: transparent;
    border-bottom-color: var(--signal);
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
  }

  .footer-about {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  :root {
    --header-h: 56px;
    --wrap-pad: 18px;
  }

  body.site-body {
    font-size: 15px;
  }

  .brand-name {
    font-size: 17px;
  }

  .hero-intro {
    padding-top: 36px;
  }

  .hero-intro .lede {
    font-size: 16px;
  }

  .hero-visual {
    margin-top: 24px;
  }

  .hero-visual img {
    aspect-ratio: 4 / 3;
    max-height: none;
  }

  .entry-strip {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    margin-top: 20px;
  }

  .entry-card {
    min-height: 48px;
    padding: 14px 16px;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 4px 10px;
  }

  .entry-card .index {
    flex: 0 0 auto;
  }

  .entry-card strong {
    flex: 1 1 auto;
    font-size: 16px;
  }

  .entry-card .entry-desc {
    flex: 1 1 100%;
  }

  .topic-families,
  .feature-dossier,
  .playback-prompt,
  .revision-brief {
    margin-top: 44px;
  }

  .family-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .family-card img {
    aspect-ratio: 16 / 9;
  }

  .feedback-strip {
    padding: 22px 20px;
    gap: 12px;
  }

  .feedback-strip p {
    flex: 1 1 100%;
  }

  .strip-link {
    width: 100%;
    text-align: center;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .revision-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 16px 0;
  }

  .revision-item .tag {
    justify-self: start;
  }

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

  .archive-figure img,
  .check-figure img,
  .changelog-visual img,
  .doc-figure img,
  .dossier-figure img {
    aspect-ratio: 16 / 9;
  }

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

  .shape-table dt {
    padding-bottom: 2px;
    border-bottom: 0;
  }

  .shape-table dd {
    padding-top: 0;
  }

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

  .check-table dt {
    padding-bottom: 2px;
    border-top: 1px solid var(--rule);
    border-bottom: 0;
  }

  .check-table dd {
    padding-top: 0;
  }

  .check-table dt:first-of-type {
    border-top: 0;
  }

  .change-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 16px 0;
  }

  .two-col {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .type-col {
    padding: 20px;
  }

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

  .related-links a {
    min-height: 48px;
    display: flex;
    align-items: center;
  }

  .archive-links {
    flex-direction: column;
  }

  .archive-link,
  .clear-reading-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding-top: 36px;
  }

  .footer-about {
    grid-column: auto;
  }

  .footer-links a {
    min-height: 40px;
    display: flex;
    align-items: center;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .error-block {
    padding-top: 48px;
  }

  .btn-home {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}