/* ==========================================================================
   飘花电影在线播放 — 全站样式
   结构：base / layout / components / pages / responsive
   ========================================================================== */

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

:root {
  --paper: #f6f4ef;
  --panel: #ffffff;
  --ink: #2b2a27;
  --ink-soft: #6b6862;
  --brick: #a8443a;
  --teal: #3f6b6b;
  --olive: #6f7a45;
  --line: #d8d3c8;
  --link: #1f5f8b;
  --radius: 6px;
  --shadow: 0 1px 2px rgba(43, 42, 39, 0.06), 0 6px 18px rgba(43, 42, 39, 0.05);
  --wrap: 1120px;
  --read: 760px;
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
}

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

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.5em;
  line-height: 1.35;
  font-weight: 700;
  color: var(--ink);
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

li {
  margin-bottom: 0.35em;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

table {
  border-collapse: collapse;
  width: 100%;
}

.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;
}

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

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

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

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.2;
  white-space: nowrap;
}

.brand:hover {
  text-decoration: none;
  color: var(--brick);
}

.brand-mark {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background-color: var(--brick);
  box-shadow: inset 0 0 0 4px rgba(255, 255, 255, 0.55);
  flex: none;
}

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

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

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: inline-block;
  padding: 9px 12px;
  border-radius: 4px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.4;
}

.nav-link:hover {
  background-color: rgba(63, 107, 107, 0.08);
  color: var(--teal);
  text-decoration: none;
}

.nav-link.is-current {
  color: var(--brick);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--brick);
  border-radius: 0;
}

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

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

.site-main {
  flex: 1 1 auto;
  width: 100%;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 22px 20px 56px;
}

.site-footer {
  background-color: #efece4;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 36px 20px 20px;
}

.footer-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.footer-group-title {
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 10px;
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-list li {
  margin-bottom: 6px;
}

.footer-list a {
  color: var(--ink-soft);
  font-size: 14px;
}

.footer-list a:hover {
  color: var(--brick);
}

.footer-bottom {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  align-items: baseline;
  justify-content: space-between;
}

.footer-about,
.footer-copy {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.footer-copy {
  color: #8a8680;
}

/* --------------------------------------------------------------------------
   components — 通用
   -------------------------------------------------------------------------- */

.top-notice,
.topbar,
.top-bar {
  background-color: #eceae2;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-soft);
}

.top-notice {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 7px 20px;
}

.top-notice-text {
  margin: 0;
  flex: 1 1 auto;
}

.top-notice-close {
  flex: none;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: transparent;
  line-height: 1;
  font-size: 15px;
  color: var(--ink-soft);
}

.top-notice-close:hover {
  color: var(--brick);
  border-color: var(--brick);
}

.topbar-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 7px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-text {
  margin: 0;
  flex: 1 1 auto;
}

.topbar-close {
  flex: none;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: transparent;
  line-height: 1;
  font-size: 15px;
  color: var(--ink-soft);
}

.topbar-close:hover {
  color: var(--brick);
  border-color: var(--brick);
}

.top-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 7px 20px;
}

.top-bar-text {
  margin: 0;
  flex: 1 1 auto;
}

.top-bar-close {
  flex: none;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: transparent;
  line-height: 1;
  font-size: 15px;
  color: var(--ink-soft);
}

.top-bar-close:hover {
  color: var(--brick);
  border-color: var(--brick);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

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

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

.breadcrumb-sep {
  color: #b5b0a6;
}

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

.page-header {
  border-left: 3px solid var(--brick);
  padding: 2px 0 2px 16px;
  margin-bottom: 30px;
}

.page-title {
  font-size: 32px;
  line-height: 1.3;
  margin-bottom: 10px;
}

.page-description {
  margin: 0;
  max-width: var(--read);
  color: var(--ink-soft);
  font-size: 15px;
}

.page-description a {
  color: var(--link);
}

.section {
  margin-bottom: 44px;
}

.section:last-child {
  margin-bottom: 0;
}

.section-head {
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
}

.section-title {
  font-size: 22px;
  margin-bottom: 8px;
}

.section-desc,
.section-intro,
.section-lead {
  margin: 0;
  max-width: var(--read);
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.section-lead {
  margin-bottom: 16px;
}

.subsection-title {
  font-size: 17px;
  margin-bottom: 10px;
}

.text-link {
  display: inline-block;
  font-size: 14px;
  color: var(--link);
}

.text-link::after {
  content: " →";
  font-size: 13px;
}

.text-link:hover {
  color: var(--brick);
  text-decoration: underline;
}

.section-foot,
.section-note,
.section-footnote {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.section-foot a,
.section-note a,
.section-footnote a {
  margin-right: 14px;
}

.section-media,
.figure-block,
.guide-route-figure {
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--panel);
  overflow: hidden;
}

.section-media img,
.figure-block img,
.guide-route-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.section-media figcaption,
.figure-block figcaption,
.guide-route-figure figcaption {
  padding: 9px 14px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

/* 数据表格 */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--panel);
}

.data-table,
.field-table {
  width: 100%;
  font-size: 14px;
  line-height: 1.6;
}

.data-table caption,
.field-table caption {
  text-align: left;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.data-table th,
.data-table td,
.field-table th,
.field-table td {
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.data-table thead th,
.field-table thead th {
  background-color: #f2efe7;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.data-table tbody th,
.field-table tbody th {
  font-weight: 700;
  color: var(--teal);
  white-space: nowrap;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td,
.field-table tbody tr:last-child th,
.field-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:hover,
.field-table tbody tr:hover {
  background-color: #faf8f3;
}

.data-table a {
  color: var(--link);
}

/* 边界说明两栏 */

.boundary-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.boundary-col {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.boundary-title {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--teal);
}

.boundary-list {
  margin: 0;
  padding-left: 1.1em;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 24px 20px 56px;
}

.hero-section {
  margin-bottom: 46px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.hero-copy {
  padding-top: 4px;
}

.hero-eyebrow {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--brick);
  border-left: 3px solid var(--brick);
  padding-left: 10px;
}

.hero-title {
  font-size: 32px;
  line-height: 1.32;
  margin-bottom: 12px;
}

.hero-lead {
  max-width: var(--read);
  color: var(--ink-soft);
  font-size: 15px;
  margin-bottom: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 5px;
  font-size: 15px;
  border: 1px solid transparent;
}

.btn:hover {
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: #93392f;
  border-color: #93392f;
  color: #fff;
}

.btn-outline {
  background-color: var(--panel);
  color: var(--ink);
  border-color: var(--line);
}

.btn-outline:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.hero-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 9px 14px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

/* 首页 · 题材频道方向速览 */

.section-channels .channel-overview {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.channel-overview-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--panel);
  overflow: hidden;
}

.channel-overview-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.channel-row {
  display: grid;
  grid-template-columns: minmax(96px, 0.9fr) minmax(0, 1.4fr) minmax(0, 1.6fr) auto;
  gap: 14px;
  align-items: baseline;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line);
  margin: 0;
}

.channel-name {
  font-weight: 700;
  color: var(--teal);
}

.channel-tone,
.channel-organize {
  font-size: 14px;
  color: var(--ink-soft);
}

.channel-link {
  font-size: 14px;
  white-space: nowrap;
}

/* 首页 · 专题片单速览 */

.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.collection-block {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-top: 3px solid var(--olive);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
}

.collection-name {
  font-size: 17px;
  margin-bottom: 8px;
}

.collection-scope {
  font-size: 14px;
  color: var(--ink-soft);
  flex: 1 1 auto;
  margin-bottom: 12px;
}

.collection-link {
  font-size: 14px;
}

/* 首页 · 字段与边界摘要 */

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

.fields-summary-col {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.fields-summary-col .field-table {
  font-size: 14px;
}

.fields-summary-col .boundary-text {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.fields-summary-col .boundary-text:last-child {
  margin-bottom: 0;
}

/* 首页 · 查阅路径三步 */

.guide-overview {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.guide-overview-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--panel);
  overflow: hidden;
}

.guide-overview-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.guide-steps {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.guide-step {
  display: grid;
  grid-template-columns: 34px minmax(112px, 0.8fr) minmax(0, 2fr);
  gap: 14px;
  align-items: baseline;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line);
  margin: 0;
}

.guide-step-num {
  font-weight: 700;
  color: var(--brick);
  font-size: 15px;
}

.guide-step-name {
  font-weight: 700;
  margin: 0;
  font-size: 15px;
}

.guide-step-desc {
  font-size: 14px;
  color: var(--ink-soft);
}

/* 首页 · 页面索引 */

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

.index-col {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
}

.index-col-title {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--brick);
}

.index-col-desc {
  font-size: 14px;
  color: var(--ink-soft);
  flex: 1 1 auto;
  margin-bottom: 12px;
}

.index-col-link {
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages — 题材频道（channels）
   -------------------------------------------------------------------------- */

.channel-table th,
.channel-table td {
  font-size: 14px;
}

.organize-block {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 14px;
}

.organize-block:last-child {
  margin-bottom: 0;
}

.organize-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.organize-block p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.mapping-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.7fr) minmax(0, 2fr);
  gap: 16px;
  align-items: baseline;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
}

.mapping-channel {
  font-weight: 700;
  color: var(--teal);
}

.mapping-collection {
  font-size: 14px;
  color: var(--ink-soft);
}

.next-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.next-link {
  display: block;
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 18px;
  color: var(--ink);
}

.next-link:hover {
  border-color: var(--brick);
  text-decoration: none;
}

.next-link-title {
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--brick);
}

.next-link-desc {
  display: block;
  font-size: 14px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages — 专题片单（collections）
   -------------------------------------------------------------------------- */

.collection-scope-list {
  display: grid;
  gap: 20px;
}

.collection-scope-item {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.collection-figure {
  margin: 0;
  border-radius: 4px;
  overflow: hidden;
  background-color: #eceae2;
}

.collection-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.collection-scope-body {
  min-width: 0;
}

.collection-scope-body .collection-name {
  font-size: 18px;
  margin-bottom: 8px;
}

.collection-scope-text {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.collection-scope-meta {
  font-size: 13px;
  color: var(--olive);
  margin-bottom: 10px;
}

.logic-list {
  display: grid;
  gap: 16px;
}

.logic-item {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.logic-name {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--teal);
}

.logic-text {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.logic-detail {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(96px, 0.5fr) minmax(0, 2fr);
  gap: 6px 16px;
  font-size: 14px;
}

.logic-detail dt {
  font-weight: 700;
  color: var(--ink);
}

.logic-detail dd {
  margin: 0;
  color: var(--ink-soft);
}

.step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.step-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
  margin: 0;
}

.step-index {
  font-weight: 700;
  color: var(--brick);
  font-size: 16px;
}

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

.step-name {
  font-size: 16px;
  margin-bottom: 5px;
}

.step-text {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages — 条目字段说明（fields）
   -------------------------------------------------------------------------- */

.page-layout.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 300px);
  gap: 32px;
  align-items: start;
}

.content-main {
  min-width: 0;
}

.content-side {
  min-width: 0;
  position: sticky;
  top: 82px;
}

.side-block {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 18px;
  margin-bottom: 18px;
}

.side-block:last-child {
  margin-bottom: 0;
}

.side-title {
  font-size: 16px;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.side-block p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.side-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.side-list li {
  margin-bottom: 8px;
  font-size: 14px;
}

.side-list li:last-child {
  margin-bottom: 0;
}

.side-list a {
  color: var(--link);
}

.field-note-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field-note {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.field-note-title {
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--teal);
}

.field-note p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.boundary-pair-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.boundary-pair {
  display: grid;
  grid-template-columns: minmax(110px, 0.6fr) minmax(0, 2fr);
  gap: 16px;
  align-items: baseline;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
  margin: 0;
}

.boundary-field {
  font-weight: 700;
  color: var(--teal);
}

.boundary-desc {
  font-size: 14px;
  color: var(--ink-soft);
}

.tip-list {
  margin: 0;
  padding-left: 1.15em;
  font-size: 14px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages — 查阅路径指引（guide）
   -------------------------------------------------------------------------- */

.guide-steps {
  margin-bottom: 44px;
}

.guide-steps > h2,
.guide-fields > h2,
.guide-outside > h2,
.guide-feedback > h2,
.guide-links > h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.guide-step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.guide-step-list .guide-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 6px 16px;
  align-items: baseline;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line);
}

.guide-step-no {
  grid-row: 1 / span 2;
  font-weight: 700;
  color: var(--brick);
  font-size: 16px;
}

.guide-step-list .guide-step-name {
  font-size: 16px;
  margin: 0;
}

.guide-step-list .guide-step-desc {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.guide-step-link {
  grid-column: 2;
  font-size: 14px;
  margin-top: 6px;
}

.guide-fields,
.guide-outside,
.guide-feedback,
.guide-links {
  margin-bottom: 44px;
}

.guide-field-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.guide-field-card {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 15px 18px;
}

.guide-field-step {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--teal);
}

.guide-field-list {
  margin: 0;
  padding-left: 1.1em;
  font-size: 14px;
  color: var(--ink-soft);
}

.guide-field-list strong {
  color: var(--ink);
}

.guide-outside-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.guide-outside-col {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.guide-outside-col h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--brick);
}

.guide-outside-col p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.guide-feedback-body {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 18px;
}

.guide-feedback-body h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--teal);
}

.guide-feedback-body p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.guide-faq h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.faq-item {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 10px;
}

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

.faq-question {
  padding: 13px 16px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
}

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

.faq-question::after {
  content: "展开";
  flex: none;
  font-size: 13px;
  font-weight: 400;
  color: var(--link);
}

.faq-item[open] .faq-question::after {
  content: "收起";
}

.faq-question:hover {
  color: var(--brick);
}

.faq-answer {
  padding: 0 16px 14px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.faq-answer p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.guide-link-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.guide-link-list li {
  margin: 0;
}

.guide-link-list a {
  display: block;
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 13px 15px;
  font-size: 14px;
  color: var(--ink);
}

.guide-link-list a:hover {
  border-color: var(--brick);
  color: var(--brick);
  text-decoration: none;
}

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

.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 60px 20px 80px;
}

.error-inner {
  max-width: 620px;
  border-left: 3px solid var(--brick);
  padding-left: 20px;
}

.error-code {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--brick);
}

.error-title {
  font-size: 32px;
  margin-bottom: 12px;
}

.error-text {
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.error-list {
  margin: 0 0 24px;
  padding-left: 1.15em;
  font-size: 14px;
  color: var(--ink-soft);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.error-button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 5px;
  background-color: var(--brick);
  color: #fff;
  border: 1px solid var(--brick);
  font-size: 15px;
}

.error-button:hover {
  background-color: #93392f;
  border-color: #93392f;
  color: #fff;
  text-decoration: none;
}

.error-link {
  font-size: 14px;
}

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

@media (max-width: 960px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 18px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    margin-left: 0;
    flex-basis: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-top: 1px solid var(--line);
    padding: 6px 0 4px;
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 0 4px;
    border-radius: 0;
  }

  .nav-link.is-current {
    box-shadow: inset 2px 0 0 var(--brick);
    padding-left: 10px;
  }

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

  .section-channels .channel-overview,
  .guide-overview {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .channel-overview-media img,
  .guide-overview-media img {
    aspect-ratio: 16 / 9;
  }

  .collection-grid,
  .next-links,
  .guide-field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fields-summary,
  .boundary-columns,
  .guide-outside-body,
  .field-note-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .index-grid,
  .guide-link-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-layout.layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .content-side {
    position: static;
  }

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

  .collection-figure img {
    aspect-ratio: 16 / 9;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .header-inner,
  .inner-main,
  .home-main,
  .footer-inner,
  .top-notice,
  .topbar-inner,
  .top-bar {
    padding-left: 14px;
    padding-right: 14px;
  }

  .brand-text {
    font-size: 16px;
    white-space: normal;
  }

  .page-title,
  .hero-title,
  .error-title {
    font-size: 24px;
  }

  .section-title,
  .guide-steps > h2,
  .guide-fields > h2,
  .guide-outside > h2,
  .guide-feedback > h2,
  .guide-links > h2 {
    font-size: 19px;
  }

  .subsection-title {
    font-size: 16px;
  }

  .page-header {
    padding-left: 12px;
    margin-bottom: 24px;
  }

  .section {
    margin-bottom: 34px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

  .collection-grid,
  .next-links,
  .index-grid,
  .guide-field-grid,
  .guide-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .channel-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 13px 0;
    border-top: 1px solid var(--line);
  }

  .channel-link {
    white-space: normal;
  }

  .guide-step,
  .guide-step-list .guide-step {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 4px 12px;
  }

  .guide-step-list .guide-step-desc {
    grid-column: 2;
  }

  .guide-step-link {
    grid-column: 2;
  }

  .mapping-row,
  .boundary-pair,
  .logic-detail {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .step-item {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 10px;
  }

  .data-table,
  .field-table {
    font-size: 13px;
  }

  .data-table th,
  .data-table td,
  .field-table th,
  .field-table td {
    padding: 9px 11px;
  }

  .footer-groups {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

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

  .error-main {
    padding: 40px 14px 60px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .next-link,
  .index-col,
  .collection-block,
  .guide-link-list a {
    transition: border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
  }

  .next-link:hover,
  .index-col:hover,
  .collection-block:hover {
    box-shadow: var(--shadow);
  }
}