/* ==========================================================================
   最新反差 syyllhgc.com — 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base — 变量、重置、排版
   -------------------------------------------------------------------------- */

:root {
  --bg-deep: #0b0b0c;
  --bg-surface: #121316;
  --bg-raised: #1a1c20;
  --line: #2a2c31;
  --line-soft: #202226;
  --text-main: #f4f3f1;
  --text-sub: #b6b6b8;
  --text-weak: #7c7d81;
  --accent-line: #cfcdc6;
  --btn-bg: #ffffff;
  --btn-fg: #0b0b0c;
  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", "Roboto Mono", monospace;
  --wrap: 1180px;
  --pad: 24px;
  --radius: 2px;
  --header-h: 64px;
  --ease: 180ms ease;
}

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

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

body {
  margin: 0;
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.28;
  color: var(--text-main);
}

p {
  margin: 0;
}

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

dl,
dd {
  margin: 0;
}

a {
  color: var(--text-main);
  text-decoration: none;
  transition: color var(--ease), opacity var(--ease);
}

a:hover {
  color: #ffffff;
}

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

figure {
  margin: 0;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   2. layout — 骨架：页头 / 主导航 / 主区 / 面包屑 / 页标题 / 页脚
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--header-h);
  background-color: rgba(11, 11, 12, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: var(--wrap);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--pad);
}

.brand-mark {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-main);
}

.brand-mark:hover {
  color: #ffffff;
}

.main-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 11px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--text-sub);
  border-bottom: 1px solid transparent;
}

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

.nav-link.is-current {
  color: var(--text-main);
  border-bottom-color: #ffffff;
}

.header-action {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 16px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--btn-fg);
  background-color: var(--btn-bg);
  border-radius: var(--radius);
  transition: background-color var(--ease), color var(--ease);
}

.header-action:hover {
  background-color: var(--accent-line);
  color: var(--btn-fg);
}

.nav-toggle {
  display: none;
  flex: 0 0 auto;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 1px;
  background-color: var(--text-main);
}

.site-main {
  display: block;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.inner-main {
  padding-top: 22px;
  padding-bottom: 64px;
}

.home-main {
  padding-bottom: 64px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-weak);
}

.breadcrumb a {
  color: var(--text-weak);
}

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

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

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

.page-header {
  margin-top: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.24;
  letter-spacing: 0.005em;
  color: var(--text-main);
}

.page-masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
  gap: 40px;
  align-items: start;
  margin-top: 26px;
  margin-bottom: 44px;
}

.masthead-text {
  min-width: 0;
}

.masthead-index,
.section-index {
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  text-transform: uppercase;
}

.masthead-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-sub);
  max-width: 68ch;
}

.masthead-figure {
  min-width: 0;
  margin: 0;
}

.masthead-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  filter: grayscale(1);
  transition: filter var(--ease);
}

.masthead-figure:hover img {
  filter: grayscale(0.55);
}

.masthead-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-weak);
}

.figure-note {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-weak);
}

.site-footer {
  border-top: 1px solid var(--line);
  background-color: var(--bg-surface);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 32px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 48px var(--pad) 34px;
}

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

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}

.footer-brand-desc {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-weak);
  max-width: 30ch;
}

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

.footer-col-title {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.footer-col-title-sub {
  margin-top: 22px;
}

.footer-links li + li {
  margin-top: 2px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  color: var(--text-sub);
}

.footer-links a:hover {
  color: var(--text-main);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px var(--pad) 30px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  color: var(--text-weak);
}

.footer-bottom-brand {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--text-sub);
}

.footer-bottom-line {
  flex: 1 1 auto;
  min-width: 0;
}

.back-top {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--text-sub);
}

.back-top:hover {
  color: var(--text-main);
}

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

.btn-solid,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 14px;
  letter-spacing: 0.02em;
  border-radius: var(--radius);
  transition: background-color var(--ease), color var(--ease), border-color var(--ease);
}

.btn-solid {
  color: var(--btn-fg);
  background-color: var(--btn-bg);
}

.btn-solid:hover {
  background-color: var(--accent-line);
  color: var(--btn-fg);
}

.btn-ghost {
  color: var(--text-main);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  border-color: var(--accent-line);
  color: #ffffff;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  font-family: var(--font-sans);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-sub);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  white-space: nowrap;
}

.pill-new {
  color: var(--text-main);
  border-color: var(--accent-line);
}

.pill-adjust {
  color: var(--text-sub);
  border-color: var(--line);
}

.pill-revise {
  color: var(--text-weak);
  border-color: var(--line-soft);
}

.section-title {
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.3;
}

.section-sub,
.section-lead,
.section-desc {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-sub);
  max-width: 68ch;
}

.section-head {
  margin-bottom: 20px;
}

.section-head h2 {
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.3;
}

.rule-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.rule-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.rule-no,
.rule-num,
.rule-index {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--text-weak);
}

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

.rule-name,
.rule-title {
  font-family: var(--font-sans);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-main);
}

.rule-text {
  margin-top: 6px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-sub);
}

.compare-rows {
  border-top: 1px solid var(--line);
}

.compare-row {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.compare-dim {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-weak);
  text-transform: uppercase;
}

.compare-val {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-sub);
  min-width: 0;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line-soft);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
  padding: 14px 0;
  font-family: var(--font-sans);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
  color: var(--text-weak);
}

.faq-item[open] .faq-question::after {
  content: "−";
  color: var(--text-main);
}

.faq-answer {
  padding: 0 0 18px;
}

.faq-answer p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-sub);
  max-width: 68ch;
}

.closing-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 28px;
  margin-top: 44px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.closing-text {
  flex: 1 1 320px;
  min-width: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-sub);
}

.next-links {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.next-links h2 {
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.3;
  margin-bottom: 18px;
}

.next-grid,
.next-link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.next-card,
.next-link-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 44px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-surface);
  transition: border-color var(--ease), background-color var(--ease);
}

.next-card:hover,
.next-link-card:hover {
  border-color: var(--accent-line);
  background-color: var(--bg-raised);
}

.next-label,
.next-card-label,
.next-link-label,
.next-link-index {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  text-transform: uppercase;
}

.next-card-title,
.next-link-title {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
}

.next-desc,
.next-card-desc,
.next-link-desc {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-sub);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
}

.related-links-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  text-transform: uppercase;
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--text-sub);
}

.related-links-item:hover {
  color: var(--text-main);
}

/* --------------------------------------------------------------------------
   4. pages — 首页
   -------------------------------------------------------------------------- */

.hero-focus {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
  grid-template-areas:
    "text panel"
    "media media";
  gap: 32px 44px;
  padding: 52px 0 34px;
  border-bottom: 1px solid var(--line);
}

.hero-text {
  grid-area: text;
  min-width: 0;
}

.hero-eyebrow {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  text-transform: uppercase;
}

.hero-text h1 {
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--text-main);
}

.hero-lead {
  margin-top: 18px;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-sub);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.resource-panel {
  grid-area: panel;
  min-width: 0;
  padding: 20px 20px 8px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.resource-title {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.resource-list {
  border-top: 1px solid var(--line-soft);
}

.resource-list li {
  border-bottom: 1px solid var(--line-soft);
}

.resource-list li:last-child {
  border-bottom: 0;
}

.resource-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 44px;
  padding: 12px 0;
}

.resource-link::after {
  content: "→";
  position: absolute;
  right: 0;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-weak);
  transition: transform var(--ease), color var(--ease);
}

.resource-link {
  position: relative;
  padding-right: 26px;
}

.resource-link:hover::after {
  transform: translateX(3px);
  color: var(--text-main);
}

.resource-name {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
}

.resource-desc {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-weak);
}

.hero-media {
  grid-area: media;
  min-width: 0;
  margin: 0;
}

.hero-media img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: var(--radius);
  filter: grayscale(1);
  transition: filter var(--ease);
}

.hero-media:hover img {
  filter: grayscale(0.55);
}

.channel-tag-strip {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.tag-strip-list {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.tag-strip-list::-webkit-scrollbar {
  display: none;
}

.tag-strip-list li {
  flex: 0 0 auto;
}

.tag-strip-list .pill {
  min-height: 32px;
  padding: 5px 12px;
  font-size: 12.5px;
  color: var(--text-sub);
}

.tag-strip-list .pill:hover {
  border-color: var(--accent-line);
  color: var(--text-main);
}

.tag-strip-more {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 4px;
  font-size: 12.5px;
  color: var(--text-weak);
  white-space: nowrap;
}

.tag-strip-more:hover {
  color: var(--text-main);
}

.role-router {
  padding: 44px 0 8px;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.role-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 20px 18px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--ease), background-color var(--ease);
}

.role-card:hover {
  border-color: var(--accent-line);
  background-color: var(--bg-raised);
}

.role-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-weak);
}

.role-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
}

.role-desc {
  flex: 1 1 auto;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-sub);
}

.role-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 13px;
  color: var(--text-main);
  border-bottom: 1px solid var(--line);
  align-self: flex-start;
  padding-bottom: 2px;
}

.role-link:hover {
  border-bottom-color: #ffffff;
}

.content-workspace {
  padding: 44px 0 8px;
}

.workspace-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 32px;
  margin-top: 22px;
  align-items: start;
}

.workspace-shell.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
}

.channel-rail {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--bg-surface);
  padding: 18px 0 10px;
}

.rail-title {
  padding: 0 18px 12px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  text-transform: uppercase;
}

.rail-buttons {
  display: flex;
  flex-direction: column;
}

.rail-btn {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 18px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-sub);
  text-align: left;
  border-left: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

.rail-btn:hover {
  color: var(--text-main);
  background-color: var(--bg-raised);
}

.rail-btn.is-active {
  color: var(--text-main);
  border-left-color: #ffffff;
  background-color: var(--bg-raised);
}

.rail-more {
  display: flex;
  align-items: center;
  min-height: 44px;
  margin-top: 6px;
  padding: 8px 18px;
  font-size: 13px;
  color: var(--text-weak);
  border-top: 1px solid var(--line-soft);
}

.rail-more:hover {
  color: var(--text-main);
}

.topic-results {
  min-width: 0;
  border-top: 1px solid var(--line);
}

.topic-panel {
  display: block;
}

.topic-panel[hidden] {
  display: none;
}

.topic-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1.7fr) minmax(0, 0.9fr) minmax(0, 0.8fr) minmax(0, 0.8fr) minmax(0, 0.9fr) minmax(0, 0.8fr);
  gap: 12px;
  align-items: center;
  padding: 14px 0 14px 12px;
  border-bottom: 1px solid var(--line-soft);
  border-left: 1px solid transparent;
  transition: border-color var(--ease), background-color var(--ease);
}

.topic-row:hover {
  border-left-color: var(--accent-line);
  background-color: var(--bg-surface);
}

.topic-no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-weak);
}

.topic-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  min-width: 0;
}

.topic-channel,
.topic-eps,
.topic-duration,
.topic-rhythm,
.topic-batch,
.topic-structure {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-sub);
  min-width: 0;
}

.topic-batch {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-weak);
}

.compare-preview {
  padding: 44px 0 8px;
}

.compare-preview-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 32px;
  margin-top: 22px;
  align-items: start;
}

.compare-preview-shell.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
}

.compare-side {
  min-width: 0;
  padding: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.compare-side-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
  margin-bottom: 18px;
}

.compare-side .btn-solid {
  width: 100%;
}

.watch-prep {
  padding: 44px 0 8px;
}

.prep-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
  gap: 40px;
  margin-top: 22px;
  align-items: start;
}

.prep-more {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-sub);
  border-bottom: 1px solid var(--line);
}

.prep-more:hover {
  color: var(--text-main);
  border-bottom-color: #ffffff;
}

.update-digest {
  padding: 44px 0 8px;
}

.log-timeline {
  margin-top: 22px;
  border-top: 1px solid var(--line);
}

.log-entry {
  display: grid;
  grid-template-columns: 108px 96px minmax(0, 1fr) minmax(0, 2fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.log-date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-weak);
  white-space: nowrap;
}

.log-type {
  font-size: 12px;
  color: var(--text-sub);
}

.log-target {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-main);
  min-width: 0;
}

.log-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-sub);
  min-width: 0;
}

.digest-more {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-sub);
  border-bottom: 1px solid var(--line);
}

.digest-more:hover {
  color: var(--text-main);
  border-bottom-color: #ffffff;
}

.home-faq {
  padding: 44px 0 8px;
}

.home-faq .faq-list {
  margin-top: 22px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--text-sub);
  border-bottom: 1px solid var(--line);
}

.text-link:hover {
  color: var(--text-main);
  border-bottom-color: #ffffff;
}

/* --------------------------------------------------------------------------
   4.1 pages — 频道总览
   -------------------------------------------------------------------------- */

.channel-table-section {
  margin-bottom: 48px;
}

.channel-table {
  border-top: 1px solid var(--line);
}

.channel-table-head {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.8fr) minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--text-weak);
  text-transform: uppercase;
}

.channel-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.8fr) minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color var(--ease);
}

.channel-row:hover {
  background-color: var(--bg-surface);
}

.cell {
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-sub);
}

.cell-name {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.channel-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
}

.selection-method {
  margin-bottom: 48px;
}

.confusable-pairs {
  margin-bottom: 40px;
}

.pair-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px 32px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.pair-item:last-child {
  border-bottom: 1px solid var(--line);
}

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

.pair-name {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  margin-bottom: 6px;
}

.pair-col p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
}

.pair-rule {
  grid-column: 1 / -1;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-weak);
}

/* --------------------------------------------------------------------------
   4.2 pages — 专题片单
   -------------------------------------------------------------------------- */

.field-legend {
  margin-bottom: 40px;
  padding: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.legend-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px 20px;
  margin-top: 16px;
}

.legend-item {
  min-width: 0;
}

.legend-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--text-weak);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.legend-desc {
  display: block;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-sub);
}

.topic-group {
  margin-bottom: 44px;
}

.group-head {
  margin-bottom: 16px;
}

.group-lead {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-sub);
  max-width: 68ch;
}

.group-banner {
  margin-bottom: 16px;
}

.group-banner img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius);
  filter: grayscale(1);
  transition: filter var(--ease);
}

.group-banner:hover img {
  filter: grayscale(0.55);
}

.topic-list {
  border-top: 1px solid var(--line);
}

.topic-group .topic-row {
  grid-template-columns: 34px minmax(0, 1.9fr) minmax(0, 0.9fr) minmax(0, 0.8fr) minmax(0, 0.8fr) minmax(0, 0.9fr) minmax(0, 0.8fr);
  align-items: baseline;
}

.topic-group .topic-name a {
  color: var(--text-main);
}

.topic-group .topic-name a:hover {
  color: #ffffff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* --------------------------------------------------------------------------
   4.3 pages — 专题对照
   -------------------------------------------------------------------------- */

.compare-section {
  margin-bottom: 48px;
}

.compare-matrix {
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.compare-head {
  display: grid;
  grid-template-columns: 180px repeat(4, minmax(0, 1fr));
}

.compare-corner {
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background-color: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--text-weak);
  text-transform: uppercase;
}

.compare-topic-head {
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background-color: var(--bg-surface);
  min-width: 0;
}

.compare-topic-head .topic-name {
  font-family: var(--font-serif);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
}

.compare-topic-head .topic-channel {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-weak);
}

.compare-section .compare-row {
  display: grid;
  grid-template-columns: 180px repeat(4, minmax(0, 1fr));
  gap: 0;
  padding: 0;
  align-items: stretch;
  border-bottom: 1px solid var(--line);
}

.compare-section .compare-dim {
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  background-color: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--text-weak);
  text-transform: uppercase;
  display: flex;
  align-items: flex-start;
}

.compare-cell {
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-sub);
  min-width: 0;
}

.dimension-notes {
  margin-bottom: 48px;
}

.notes-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.note-item {
  min-width: 0;
  padding: 18px 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.note-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  margin-bottom: 6px;
}

.note-text {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-sub);
}

.order-advice {
  margin-bottom: 40px;
}

.advice-list {
  border-top: 1px solid var(--line);
}

.advice-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.advice-cond {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-weak);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.advice-text {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-sub);
  max-width: 68ch;
}

/* --------------------------------------------------------------------------
   4.4 pages — 观看指南
   -------------------------------------------------------------------------- */

.entry-check {
  margin-bottom: 48px;
}

.device-prep {
  margin-bottom: 48px;
}

.prep-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.prep-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.prep-col-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  margin-bottom: 12px;
}

.prep-list {
  display: grid;
  gap: 8px;
}

.prep-item {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
}

.prep-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 1px;
  background-color: var(--text-weak);
}

.troubleshoot {
  margin-bottom: 48px;
}

.step-list {
  border-top: 1px solid var(--line);
}

.step-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-weak);
  line-height: 1.9;
}

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

.step-title {
  font-family: var(--font-sans);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-main);
}

.step-text {
  margin-top: 6px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-sub);
  max-width: 68ch;
}

.faq {
  margin-bottom: 8px;
}

/* --------------------------------------------------------------------------
   4.5 pages — 更新记录
   -------------------------------------------------------------------------- */

.type-legend {
  margin-bottom: 44px;
  padding: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.type-legend .legend-list {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.type-legend .legend-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.type-legend .legend-item p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-sub);
}

.log-batch {
  margin-bottom: 32px;
}

.log-batch-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  text-transform: uppercase;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.log-list {
  border-top: 0;
}

.log-timeline .log-entry {
  display: grid;
  grid-template-columns: 108px 96px minmax(0, 0.9fr) minmax(0, 2fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.log-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-sub);
  min-width: 0;
}

.batch-summary {
  margin-top: 12px;
  margin-bottom: 8px;
}

.summary-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 18px;
}

.summary-block {
  min-width: 0;
  padding: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.summary-block-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  margin-bottom: 8px;
}

.summary-block p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-sub);
}

/* --------------------------------------------------------------------------
   4.6 pages — 反馈说明
   -------------------------------------------------------------------------- */

.scope-split {
  margin-bottom: 48px;
}

.scope-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.scope-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scope-col-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  margin-bottom: 14px;
}

.scope-list {
  display: grid;
  gap: 12px;
}

.scope-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

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

.scope-tag {
  margin-top: 2px;
}

.scope-desc {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-sub);
  min-width: 0;
}

.scope-accept .scope-tag {
  color: var(--text-main);
  border-color: var(--accent-line);
}

.scope-reject .scope-tag {
  color: var(--text-weak);
  border-color: var(--line-soft);
}

.self-check {
  margin-bottom: 48px;
}

.check-list {
  border-top: 1px solid var(--line);
}

.check-item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.check-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-weak);
}

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

.check-title {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-main);
}

.check-note {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
}

.info-needed {
  margin-bottom: 48px;
}

.info-list {
  border-top: 1px solid var(--line);
}

.info-item {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.info-term {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-weak);
  text-transform: uppercase;
  padding-top: 3px;
}

.info-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
  min-width: 0;
}

.process {
  margin-bottom: 8px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.process-step {
  min-width: 0;
  padding: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-weak);
  margin-bottom: 8px;
}

.process-step .step-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-sub);
}

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

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-h) - 260px);
  padding-top: 60px;
  padding-bottom: 60px;
}

.error-panel {
  width: 100%;
  max-width: 560px;
  padding: 32px 28px;
  background-color: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--text-weak);
  margin-bottom: 12px;
}

.error-title {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.24;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-sub);
  margin-bottom: 20px;
}

.error-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
  margin-bottom: 20px;
}

.error-links a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 13.5px;
  color: var(--text-main);
  background-color: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--ease);
}

.error-links a:hover {
  border-color: var(--accent-line);
}

.error-note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-weak);
}

.error-note a {
  color: var(--text-sub);
  border-bottom: 1px solid var(--line);
}

.error-note a:hover {
  color: var(--text-main);
  border-bottom-color: #ffffff;
}

/* --------------------------------------------------------------------------
   5. responsive — 1024 / 768 / 560
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .header-inner {
    gap: 14px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    padding: 8px var(--pad) 16px;
    background-color: var(--bg-deep);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  }

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

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

  .nav-link {
    padding: 0 4px;
    border-bottom: 1px solid var(--line-soft);
    border-left: 2px solid transparent;
  }

  .nav-link.is-current {
    border-bottom-color: var(--line-soft);
    border-left-color: #ffffff;
  }

  .hero-focus {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 28px 32px;
    padding-top: 40px;
  }

  .hero-media img {
    height: 280px;
  }

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

  .workspace-shell,
  .workspace-shell.sidebar-left,
  .compare-preview-shell,
  .compare-preview-shell.sidebar-left {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 24px;
  }

  .prep-shell {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 28px;
  }

  .topic-row,
  .topic-group .topic-row {
    grid-template-columns: 30px minmax(0, 1.6fr) minmax(0, 0.9fr) minmax(0, 0.8fr) minmax(0, 0.8fr) minmax(0, 0.9fr);
    gap: 10px;
  }

  .topic-row .topic-batch {
    display: none;
  }

  .channel-table-head,
  .channel-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr) minmax(0, 1.2fr);
    gap: 16px;
  }

  .channel-table-head .cell-audience,
  .channel-row .cell-audience {
    display: none;
  }

  .compare-head {
    grid-template-columns: 150px repeat(4, minmax(0, 1fr));
  }

  .compare-section .compare-row {
    grid-template-columns: 150px repeat(4, minmax(0, 1fr));
  }

  .compare-corner,
  .compare-topic-head,
  .compare-section .compare-dim,
  .compare-cell {
    padding: 12px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1.2fr) repeat(3, minmax(0, 1fr));
    gap: 24px;
    padding-top: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --pad: 18px;
  }

  body {
    font-size: 15.5px;
  }

  .header-inner {
    justify-content: space-between;
  }

  .header-action {
    display: none;
  }

  .main-nav {
    order: 3;
    flex: 0 0 auto;
  }

  .hero-focus {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "text"
      "panel"
      "media";
    gap: 24px;
    padding-top: 32px;
    padding-bottom: 26px;
  }

  .hero-text h1 {
    font-size: clamp(30px, 8vw, 40px);
  }

  .hero-media img {
    height: 220px;
  }

  .role-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .role-card {
    padding: 16px;
  }

  .workspace-shell,
  .workspace-shell.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .channel-rail {
    padding: 12px 0 8px;
  }

  .rail-title {
    padding: 0 14px 8px;
  }

  .rail-buttons {
    flex-direction: row;
    gap: 8px;
    overflow-x: auto;
    padding: 0 14px 6px;
    scrollbar-width: none;
  }

  .rail-buttons::-webkit-scrollbar {
    display: none;
  }

  .rail-btn {
    flex: 0 0 auto;
    min-height: 40px;
    padding: 6px 14px;
    border-left: 0;
    border-bottom: 2px solid transparent;
    border-radius: var(--radius);
    background-color: var(--bg-raised);
  }

  .rail-btn.is-active {
    border-left-color: transparent;
    border-bottom-color: #ffffff;
  }

  .rail-more {
    margin-top: 4px;
    padding: 8px 14px;
    border-top: 0;
  }

  .topic-row,
  .topic-group .topic-row {
    grid-template-columns: 28px minmax(0, 1fr) minmax(0, 0.9fr);
    grid-template-areas:
      "no name name"
      "no channel rhythm"
      "no eps duration";
    gap: 4px 12px;
    padding: 14px 0 14px 10px;
    align-items: baseline;
  }

  .topic-row .topic-no {
    grid-area: no;
    align-self: start;
    padding-top: 4px;
  }

  .topic-row .topic-name {
    grid-area: name;
  }

  .topic-row .topic-channel {
    grid-area: channel;
  }

  .topic-row .topic-eps,
  .topic-row .topic-structure {
    grid-area: eps;
  }

  .topic-row .topic-duration {
    grid-area: duration;
  }

  .topic-row .topic-rhythm {
    grid-area: rhythm;
  }

  .topic-row .topic-batch {
    display: none;
  }

  .compare-preview-shell,
  .compare-preview-shell.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .compare-row {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 14px;
  }

  .prep-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .log-entry,
  .log-timeline .log-entry {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "date type"
      "target target"
      "desc desc";
    gap: 6px 12px;
    align-items: center;
  }

  .log-entry .log-date {
    grid-area: date;
  }

  .log-entry .log-type,
  .log-entry .pill {
    grid-area: type;
    justify-self: end;
  }

  .log-entry .log-target {
    grid-area: target;
    font-size: 14.5px;
  }

  .log-entry .log-text,
  .log-entry .log-desc {
    grid-area: desc;
  }

  .page-masthead {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    margin-top: 20px;
    margin-bottom: 32px;
  }

  .masthead-figure img {
    height: 180px;
  }

  .channel-table-head {
    display: none;
  }

  .channel-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 16px 0;
  }

  .channel-row .cell-name {
    flex-direction: row;
    align-items: center;
    gap: 10px;
  }

  .channel-row .cell-scope,
  .channel-row .cell-form,
  .channel-row .cell-audience {
    display: block;
    font-size: 13.5px;
  }

  .channel-row .cell-scope::before {
    content: "取材范围 · ";
    color: var(--text-weak);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
  }

  .channel-row .cell-form::before {
    content: "形式与时长 · ";
    color: var(--text-weak);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
  }

  .channel-row .cell-audience::before {
    content: "适合人群 · ";
    color: var(--text-weak);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
  }

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

  .compare-head {
    display: none;
  }

  .compare-matrix {
    border-left: 0;
    border-top: 0;
  }

  .compare-section .compare-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    margin-bottom: 18px;
    padding: 14px 16px;
    background-color: var(--bg-surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
  }

  .compare-section .compare-dim {
    padding: 0 0 10px;
    border-right: 0;
    background-color: transparent;
    font-size: 12px;
  }

  .compare-cell {
    padding: 10px 0;
    border-right: 0;
    border-top: 1px solid var(--line-soft);
    font-size: 13.5px;
  }

  .compare-cell::before {
    content: attr(data-topic);
    display: none;
  }

  .prep-columns,
  .scope-columns,
  .summary-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

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

  .info-term {
    padding-top: 0;
  }

  .process-steps {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 20px;
    padding: 36px var(--pad) 26px;
  }

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

  .footer-brand-desc {
    max-width: 46ch;
  }

  .footer-bottom {
    padding-bottom: 24px;
  }

  .closing-bar {
    margin-top: 32px;
  }

  .next-links {
    margin-top: 36px;
  }

  .error-panel {
    padding: 24px 20px;
  }
}

@media (max-width: 560px) {
  .hero-text h1 {
    font-size: clamp(26px, 8.5vw, 32px);
  }

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn-solid,
  .hero-actions .btn-ghost {
    flex: 1 1 140px;
  }

  .hero-media img {
    height: 180px;
  }

  .section-title,
  .section-head h2,
  .next-links h2 {
    font-size: 19px;
  }

  .role-grid {
    gap: 10px;
  }

  .compare-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 12px 0;
  }

  .compare-dim {
    font-size: 11.5px;
  }

  .rule-item,
  .step-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
  }

  .check-item {
    grid-template-columns: 26px minmax(0, 1fr);
    gap: 10px;
  }

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

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

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

  .footer-col-title-sub {
    margin-top: 16px;
  }

  .footer-bottom {
    gap: 8px;
    font-size: 12px;
  }

  .footer-bottom-line {
    flex-basis: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}