/* ============================================================
   香蕉影视 · 全站样式表
   会议资料风 / 浅暖底色 / 模块编号 / 主题色条
   ============================================================ */

/* ============================================================
   Base —— 基础变量、重置、字体、通用元素
   ============================================================ */

:root {
  --paper: #f6f4ef;
  --ink: #1a2233;
  --accent: #e8590c;
  --accent-soft: #fdf0e7;
  --blue: #1b4965;
  --blue-soft: #e8f0f4;
  --line: #e9e4da;
  --card: #ffffff;
  --muted: #5d6472;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow: 0 1px 3px rgba(26, 34, 51, 0.06);
  --shadow-hover: 0 4px 12px rgba(26, 34, 51, 0.08);
  --container: 1160px;
  --content-max: 860px;
  --side-w: 300px;
  --header-h: 66px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul,
ol {
  list-style: none;
}

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

p {
  line-height: 1.7;
}

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

/* ============================================================
   Layout —— 全站骨架：页头、主容器、页脚、面包屑、页面标题
   ============================================================ */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
}

/* ---------- 页头 ---------- */

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 0;
  white-space: nowrap;
}

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

.brand-name {
  position: relative;
  padding-left: 14px;
}

.brand-name::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 22px;
  background: var(--accent);
  border-radius: 2px;
}

/* ---------- 导航 ---------- */

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list li a {
  display: inline-block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  border-radius: var(--radius);
  transition: background 0.2s ease, color 0.2s ease;
  min-height: 44px;
  line-height: 1.6;
}

.nav-list li a:hover {
  background: var(--paper);
  color: var(--accent);
}

.nav-list li a.is-current {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* ---------- 主容器 ---------- */

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

.home-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 72px;
}

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px 72px;
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 20px;
}

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

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

.breadcrumb-sep {
  color: var(--line);
  font-weight: 300;
}

.breadcrumb-current {
  color: var(--ink);
  font-weight: 500;
}

/* ---------- 页面标题区 ---------- */

.page-header {
  max-width: var(--content-max);
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.page-description {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.page-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 16px;
}

.page-summary {
  font-size: 16px;
  color: var(--muted);
}

.page-summary > p {
  margin-bottom: 12px;
}

.page-summary > p:last-child {
  margin-bottom: 0;
}

.summary-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 14px;
}

.summary-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.summary-item dt {
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

.summary-item dd {
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 页脚 ---------- */

.site-footer {
  background: var(--card);
  border-top: 1px solid var(--line);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
}

.footer-col h2 {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  display: inline-block;
  padding: 4px 0;
  min-height: 32px;
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px 28px;
  border-top: 1px solid var(--line);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

.footer-bottom p:first-child {
  margin-bottom: 4px;
}

/* ============================================================
   Components —— 通用组件
   ============================================================ */

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  line-height: 1.4;
}

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

.btn-primary:hover {
  background: #c94f0a;
  color: #fff;
}

.btn-secondary {
  background: var(--card);
  color: var(--blue);
  border-color: var(--line);
}

.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-soft);
}

/* ---------- 区块标题 ---------- */

.section-heading {
  margin-bottom: 28px;
}

.section-heading .section-index {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.section-heading h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
}

.section-heading p {
  font-size: 15px;
  color: var(--muted);
  max-width: 640px;
}

.section-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title .section-index,
.section-title .section-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
}

.section-lead {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 24px;
  max-width: 720px;
}

.section-intro {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 24px;
  max-width: 720px;
}

/* ---------- 更多链接 ---------- */

.section-more {
  margin-top: 24px;
  font-size: 14px;
}

.section-more a {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
  color: var(--blue);
  padding: 6px 0;
  min-height: 36px;
}

.section-more a + a {
  margin-left: 20px;
}

.section-more a:hover {
  color: var(--accent);
}

/* ---------- 底部相关链接 ---------- */

.related-links {
  max-width: var(--content-max);
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.related-links-item {
  font-size: 14px;
  color: var(--blue);
  padding: 4px 0;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

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

/* ============================================================
   Components —— 频道卡
   ============================================================ */

.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.channel-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.channel-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.channel-card .channel-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.channel-card .channel-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  margin-left: 8px;
  vertical-align: middle;
}

.channel-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.channel-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 12px;
}

.channel-card a {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  padding: 4px 0;
  min-height: 32px;
}

.channel-card a:hover {
  color: var(--accent);
}

/* 频道卡片带媒体图（内页版） */

.channel-card-media {
  width: 100%;
  height: 160px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
  margin-bottom: 16px;
}

.channel-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.channel-card-body .channel-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.channel-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.channel-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 10px;
}

.channel-audience {
  margin-top: 10px;
}

.audience-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 6px;
}

.audience-row strong {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}

.audience-channel {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.audience-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--blue);
  background: var(--blue-soft);
  padding: 2px 10px;
  border-radius: 999px;
}

.audience-detail {
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
}

.audience-reference {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

/* ============================================================
   Components —— 片单专辑卡（首页）
   ============================================================ */

.collections-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.collection-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.collection-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.collection-cover {
  width: 100%;
  aspect-ratio: 16 / 7;
  overflow: hidden;
  background: var(--paper);
}

.collection-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.collection-body {
  padding: 20px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.collection-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.collection-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 10px;
  border-radius: 999px;
  align-self: flex-start;
  margin-bottom: 14px;
}

.collection-tracklist {
  margin-bottom: 14px;
}

.collection-tracklist li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.65;
  margin-bottom: 6px;
}

.collection-tracklist li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
}

.collection-note {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 14px;
  padding: 10px 14px;
  background: var(--paper);
  border-radius: var(--radius-sm);
}

.collection-body > a {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  margin-top: auto;
  padding: 4px 0;
  min-height: 32px;
}

.collection-body > a:hover {
  color: var(--accent);
}

/* ============================================================
   Components —— 场景选择速查（首页）
   ============================================================ */

.quick-choice-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.scenario-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.scenario-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
  text-align: center;
  line-height: 1.4;
}

.scenario-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.scenario-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.suggestion-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 24px;
  min-height: 160px;
}

.suggestion-default {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
}

/* ============================================================
   Components —— 观看路径（首页）
   ============================================================ */

.path-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.path-step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.path-step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.path-step .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 15px;
  font-weight: 800;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
  margin-bottom: 12px;
}

.path-step h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.path-step p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 10px;
}

.path-step a {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  padding: 4px 0;
  min-height: 32px;
}

.path-step a:hover {
  color: var(--accent);
}

/* ============================================================
   Components —— 反馈预告（首页）
   ============================================================ */

.feedback-teaser {
  background: var(--blue);
  border-radius: var(--radius);
  padding: 36px 40px;
  margin-top: 24px;
}

.feedback-teaser-content {
  max-width: 720px;
}

.feedback-teaser-content h2 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}

.feedback-teaser-content p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 16px;
}

.feedback-teaser-content a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  background: #fff;
  border-radius: var(--radius);
  transition: background 0.2s ease;
}

.feedback-teaser-content a:hover {
  background: var(--paper);
  color: var(--blue);
}

/* ============================================================
   Components —— 内页双栏布局
   ============================================================ */

.page-layout {
  display: grid;
  grid-template-columns: 1fr var(--side-w);
  gap: 40px;
  align-items: start;
}

.page-layout .layout-main {
  min-width: 0;
}

.page-layout .layout-side,
.page-layout .side-col {
  min-width: 0;
}

/* 侧栏通用 */

.layout-side .side-section,
.side-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.layout-side .side-section h2,
.side-card .side-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.side-desc,
.side-intro {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
}

.side-link-list li {
  margin-bottom: 4px;
}

.side-link-list li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--ink);
  border-bottom: 1px solid var(--paper);
  min-height: 44px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.side-link-list li a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.side-link-list li a::after {
  content: "→";
  color: var(--line);
  font-size: 14px;
}

.side-tip-list {
  margin-top: 12px;
}

.side-tip-list li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 8px;
}

.side-tip-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* 场景一页纸（scenarios 侧栏） */

.quick-check-list {
  margin-bottom: 16px;
}

.quick-check-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--paper);
}

.quick-check-label {
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
  min-width: 72px;
}

.quick-check-value {
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.5;
}

.side-note {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

.side-note a {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  margin-top: 6px;
  padding: 4px 0;
  min-height: 32px;
}

.side-note a + a {
  margin-left: 12px;
}

/* ============================================================
   Components —— 下一步入口
   ============================================================ */

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

.next-step-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 20px;
}

.next-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.next-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.next-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-left-color: var(--accent);
}

.next-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.next-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* 横向 next-step-card（channels / scenarios） */

.next-step-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.next-step-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.next-step-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.next-step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.next-step-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* 纵向 next-link（guide / faq / feedback） */

.next-step-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.next-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.next-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.next-link-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.next-link-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ============================================================
   Pages —— 首页
   ============================================================ */

/* ---------- Hero ---------- */

.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 64px;
}

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

.hero-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.hero-title {
  font-size: 38px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 12px;
}

.hero-slogan {
  font-size: 18px;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 20px;
  max-width: 480px;
}

.hero-questions {
  margin-bottom: 28px;
}

.hero-questions li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  color: var(--ink);
  line-height: 1.6;
  margin-bottom: 8px;
}

.hero-questions li::before {
  content: "?";
  position: absolute;
  left: 0;
  top: 0;
  width: 18px;
  height: 18px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.hero-figure {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

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

/* ---------- 频道导视 ---------- */

.channel-overview {
  padding: 48px 0;
}

/* ---------- 片单专辑 ---------- */

.collections-section {
  padding: 48px 0;
}

/* ---------- 选择速查 ---------- */

.quick-choice {
  padding: 48px 0;
}

/* ---------- 观看路径 ---------- */

.path-section {
  padding: 48px 0;
}

/* ============================================================
   Pages —— 频道目录（channels）
   ============================================================ */

.page-channels .content-section {
  margin-bottom: 40px;
}

.page-channels .section-heading {
  margin-bottom: 20px;
}

.page-channels .section-heading .section-index {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.page-channels .section-heading h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
}

/* ============================================================
   Pages —— 题材对比（comparison）
   ============================================================ */

.object-selector {
  margin-bottom: 40px;
}

.object-selector .section-title {
  font-size: 22px;
}

.object-selector > p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
}

.selector-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.selector-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.selector-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.selector-tab.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.comparison-section {
  margin-bottom: 40px;
}

.comparison-figure {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
  background: var(--card);
  border: 1px solid var(--line);
}

.comparison-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

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

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

.comparison-table th,
.comparison-table td {
  padding: 14px 16px;
  text-align: left;
  font-size: 14px;
  line-height: 1.6;
  border-bottom: 1px solid var(--line);
}

.comparison-table thead th {
  background: var(--paper);
  font-weight: 700;
  color: var(--ink);
  font-size: 14px;
}

.comparison-table thead th:first-child {
  width: 140px;
}

.comparison-table tbody th {
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
  white-space: nowrap;
}

.comparison-table tbody tr:last-child th,
.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.conclusion-section {
  margin-bottom: 40px;
}

.conclusion-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.conclusion-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.conclusion-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.conclusion-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

.suggestion-section {
  margin-bottom: 40px;
}

.suggestion-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.suggestion-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.suggestion-item h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.suggestion-item p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.suggestion-item p a {
  display: inline-block;
  font-weight: 600;
  color: var(--blue);
  margin-top: 6px;
  padding: 4px 0;
  min-height: 32px;
}

.suggestion-item p a:hover {
  color: var(--accent);
}

/* ============================================================
   Pages —— 场景片单（scenarios）
   ============================================================ */

.page-scenarios .content-section {
  margin-bottom: 40px;
}

.content-media {
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
  background: var(--card);
  border: 1px solid var(--line);
}

.content-media img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.content-media figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--muted);
  background: var(--card);
}

.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.scenario-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.scenario-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.scenario-card-head {
  padding: 16px 24px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.scenario-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 12px;
  border-radius: 999px;
}

.scenario-time {
  font-size: 13px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.scenario-mood {
  font-size: 13px;
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.scenario-card-body {
  padding: 20px 24px;
}

.scenario-subtitle {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.scenario-list-items {
  margin-bottom: 12px;
}

.scenario-list-items li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.65;
  margin-bottom: 6px;
}

.scenario-list-items li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.scenario-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  padding: 4px 0;
  min-height: 32px;
}

.scenario-link:hover {
  color: var(--accent);
}

/* 场景×题材搭配表 */

.pairing-section {
  margin-top: 16px;
}

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

.pairing-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.pairing-table th,
.pairing-table td {
  padding: 14px 16px;
  text-align: left;
  font-size: 14px;
  line-height: 1.6;
  border-bottom: 1px solid var(--line);
}

.pairing-table thead th {
  background: var(--paper);
  font-weight: 700;
  color: var(--ink);
}

.pairing-table tbody tr:last-child td {
  border-bottom: none;
}

.pairing-table td:first-child {
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

.pairing-table a {
  display: inline-block;
  font-weight: 600;
  color: var(--blue);
  padding: 2px 0;
  min-height: 28px;
}

.pairing-table a:hover {
  color: var(--accent);
}

.table-note {
  font-size: 13px;
  color: var(--muted);
  margin-top: 12px;
}

.table-note a {
  color: var(--blue);
  font-weight: 600;
}

.table-note a:hover {
  color: var(--accent);
}

/* ============================================================
   Pages —— 观看指南（guide）
   ============================================================ */

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

.guide-section .section-heading {
  margin-bottom: 20px;
}

.guide-section .section-heading .section-index {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.guide-section .section-heading h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
}

/* 浏览路径（纵向步骤） */

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.step-item {
  display: flex;
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.step-item .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  font-size: 16px;
  font-weight: 800;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
}

.step-content {
  flex: 1;
  min-width: 0;
}

.step-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.step-content p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

.step-content p a {
  display: inline-block;
  font-weight: 600;
  color: var(--blue);
  margin-top: 4px;
  padding: 2px 0;
  min-height: 28px;
}

.step-content p a:hover {
  color: var(--accent);
}

.guide-figure {
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  margin-top: 8px;
}

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

.guide-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--muted);
}

/* 核验清单 */

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

.checklist-item {
  display: flex;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.check-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border: 2px solid var(--blue);
  border-radius: var(--radius-sm);
  margin-top: 2px;
  position: relative;
}

.check-icon::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 4px;
  width: 6px;
  height: 10px;
  border: solid var(--blue);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  opacity: 0;
}

.checklist-item.is-checked .check-icon::after {
  opacity: 1;
}

.check-content {
  flex: 1;
  min-width: 0;
}

.check-content h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.check-content p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* 安全原则 */

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.principle-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.principle-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.principle-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

/* ============================================================
   Pages —— 常见疑问（faq）
   ============================================================ */

.faq-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
}

.faq-intro-media {
  min-width: 0;
}

.faq-figure {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
}

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

.faq-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--muted);
}

.faq-intro-note {
  min-width: 0;
}

.faq-intro-note .section-title {
  font-size: 20px;
  margin-bottom: 14px;
}

.faq-intro-note p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 8px;
}

.faq-intro-note p strong {
  color: var(--ink);
  font-weight: 600;
}

.faq-group {
  margin-bottom: 40px;
}

.group-heading {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.group-heading .group-number {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.group-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 4px;
}

.group-desc {
  font-size: 14px;
  color: var(--muted);
}

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

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

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  min-height: 44px;
  transition: color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--muted);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item[open] summary {
  color: var(--accent);
  border-bottom: 1px solid var(--line);
}

.faq-answer {
  padding: 16px 20px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ============================================================
   Pages —— 问题反馈（feedback）
   ============================================================ */

.page-intro-figure {
  max-width: var(--content-max);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 40px;
  background: var(--card);
  border: 1px solid var(--line);
}

.page-intro-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-intro-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--muted);
}

.page-feedback .content-section {
  margin-bottom: 40px;
}

.page-feedback .content-section > h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.scope-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.scope-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.scope-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

.checklist-list,
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: feedback-step;
}

.checklist-list li,
.process-steps li {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px 18px 56px;
  counter-increment: feedback-step;
}

.checklist-list li::before,
.process-steps li::before {
  content: counter(feedback-step);
  position: absolute;
  left: 16px;
  top: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
}

.checklist-list h3,
.process-steps h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.checklist-list p,
.process-steps p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

/* ============================================================
   Pages —— 404
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

.error-panel {
  max-width: 560px;
  width: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: left;
}

.error-code {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.error-panel h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 24px;
}

.error-home-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.error-home-link:hover {
  background: #c94f0a;
  color: #fff;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.error-links a {
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  padding: 4px 0;
  min-height: 32px;
}

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

/* ============================================================
   Responsive —— 响应式断点
   ============================================================ */

/* ---------- 平板：768-959px ---------- */

@media (max-width: 959px) {
  .header-inner {
    padding: 0 20px;
  }

  .inner-main,
  .home-main {
    padding-left: 20px;
    padding-right: 20px;
  }

  /* 导航切换为汉堡 */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    z-index: 100;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    gap: 2px;
  }

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

  .nav-list li a {
    display: block;
    padding: 12px 16px;
    font-size: 15px;
    border-radius: var(--radius);
  }

  /* 首页 hero */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0 48px;
  }

  .hero-figure {
    max-width: 560px;
  }

  /* 频道网格 */
  .channel-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 内页双栏 */
  .page-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .page-layout .layout-side {
    order: 2;
  }

  /* 场景侧栏 */
  .page-scenarios .page-layout {
    grid-template-columns: 1fr;
  }

  .side-col {
    order: 2;
  }

  /* 结论卡 */
  .conclusion-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* FAQ 介绍区 */
  .faq-intro {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* ---------- 手机：≤767px ---------- */

@media (max-width: 767px) {
  :root {
    --header-h: 60px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .brand-link {
    font-size: 18px;
  }

  .inner-main,
  .home-main {
    padding: 24px 16px 56px;
  }

  .breadcrumb {
    font-size: 13px;
    margin-bottom: 16px;
  }

  .page-title {
    font-size: 26px;
  }

  .page-summary {
    font-size: 15px;
  }

  .summary-meta {
    flex-direction: column;
    gap: 8px;
  }

  /* 首页 hero */
  .hero-section {
    padding: 32px 0 40px;
    gap: 24px;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-slogan {
    font-size: 16px;
  }

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

  .hero-actions .btn {
    width: 100%;
  }

  /* 频道网格 */
  .channel-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* 片单专辑 */
  .collections-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 选择速查 */
  .quick-choice-wrapper {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .scenario-selector {
    grid-template-columns: 1fr 1fr;
  }

  /* 观看路径 */
  .path-steps {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* 反馈预告 */
  .feedback-teaser {
    padding: 28px 24px;
  }

  /* 内页区块标题 */
  .section-heading h2 {
    font-size: 22px;
  }

  .section-title {
    font-size: 20px;
  }

  /* 结论卡 */
  .conclusion-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* 建议列表 */
  .suggestion-list {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* 下一步入口 */
  .next-grid,
  .next-step-links {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* 场景卡头 */
  .scenario-card-head {
    padding: 14px 16px;
  }

  .scenario-card-body {
    padding: 16px;
  }

  /* 步骤条 */
  .step-item {
    padding: 16px;
    gap: 14px;
  }

  /* 安全原则 */
  .principles-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* 反馈范围 */
  .scope-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 16px 20px;
  }

  .footer-bottom {
    padding: 16px 16px 24px;
  }

  /* 相关链接 */
  .related-links {
    gap: 8px;
  }

  .related-links-item {
    font-size: 13px;
  }

  /* 404 */
  .error-panel {
    padding: 32px 24px;
  }

  .error-links {
    flex-direction: column;
    gap: 4px;
  }
}

/* ---------- 小屏手机：≤390px ---------- */

@media (max-width: 390px) {
  .hero-title {
    font-size: 26px;
  }

  .hero-questions li {
    font-size: 14px;
  }

  .scenario-selector {
    grid-template-columns: 1fr;
  }

  .scenario-btn {
    width: 100%;
  }

  .channel-card {
    padding: 20px;
  }

  .suggestion-card {
    padding: 20px;
  }

  .collection-body {
    padding: 16px 20px 20px;
  }

  .faq-item summary {
    padding: 14px 16px;
    font-size: 14px;
  }

  .faq-answer {
    padding: 14px 16px;
  }

  .checklist-item {
    padding: 16px;
    gap: 12px;
  }

  .check-icon {
    width: 20px;
    height: 20px;
  }

  .checklist-list li,
  .process-steps li {
    padding: 16px 16px 16px 48px;
  }

  .checklist-list li::before,
  .process-steps li::before {
    left: 12px;
    width: 24px;
    height: 24px;
    font-size: 13px;
  }
}