/* ==================================================
   杨帆云 · 航海日志系统 (现代网络知识出版物)
   Style Sheet · 2026 年刊
================================================== */

:root {
  /* 基础纸质出版物色彩系统 */
  --paper: #F3EEE3;
  --paper-light: #FBF8F1;
  --paper-white: #FFFDFC;
  --ink: #292C2A;
  --body: #65665F;
  --muted: #929087;
  --forest: #3E5046;
  --forest-dark: #304038;
  --navy: #425A6A;
  --navy-soft: #E8EDF0;
  --old-red: #9B5549;
  --old-red-soft: #F1E5E1;
  --old-gold: #AA8E5C;
  --old-gold-soft: #EDE5D5;
  --rule: #D8D0C2;
  --rule-dark: #BDB3A2;

  /* 版芯宽度 */
  --container-max: 1240px;
  --article-max: 820px;
  --header-h1: 38px;
  --header-h2: 54px;

  /* 字体家族 */
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", Consolas, Monaco, "Courier New", monospace;
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  background-color: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.88;
  color: var(--body);
  background-color: var(--paper);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 链接与排版基础 */
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

p {
  margin-bottom: 1.4em;
  color: var(--body);
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(34px, 4.2vw, 54px);
  margin-bottom: 0.6em;
}

h2 {
  font-size: clamp(26px, 3vw, 36px);
  margin-bottom: 0.8em;
}

h3 {
  font-size: clamp(20px, 2.2vw, 26px);
  margin-bottom: 0.6em;
}

h4 {
  font-size: 18px;
  margin-bottom: 0.5em;
}

/* 聚焦指示器 */
:focus-visible {
  outline: 2px solid var(--forest);
  outline-offset: 3px;
}

/* 容器与版芯 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
}

.article-container {
  width: 100%;
  max-width: var(--article-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 出版物细线标牌 */
.pub-rule-top {
  border-top: 1px solid var(--rule);
}
.pub-rule-bottom {
  border-bottom: 1px solid var(--rule);
}
.pub-rule-y {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

/* ==================================================
   LOGO
================================================== */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.05em;
}

.brand-logo-mark {
  display: inline-block;
  width: 2px;
  height: 20px;
  background-color: var(--forest);
  position: relative;
}

.brand-logo-mark::after {
  content: "";
  position: absolute;
  top: 0;
  left: 3px;
  width: 1px;
  height: 12px;
  background-color: var(--old-red);
}

.brand-logo-text {
  font-size: 19px;
  line-height: 1;
}

/* ==================================================
   HEADER (DESKTOP 2-LAYER)
================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background-color: var(--paper-light);
  border-bottom: 1px solid var(--rule-dark);
}

/* 第一层：状态与元信息栏 */
.header-topbar {
  height: var(--header-h1);
  border-bottom: 1px solid var(--rule);
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
}

.header-topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.header-topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-topbar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-topbar-right a {
  color: var(--body);
}
.header-topbar-right a:hover {
  color: var(--forest);
}

.edition-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--forest);
}

/* 第二层：目录式导航栏 */
.header-nav-bar {
  height: var(--header-h2);
  display: flex;
  align-items: center;
}

.header-nav-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-links a {
  font-size: 14.5px;
  color: var(--ink);
  font-weight: 500;
  padding: 6px 0;
  position: relative;
}

.nav-links a:hover {
  color: var(--forest);
}

.nav-links a.active {
  color: var(--forest-dark);
  font-weight: 600;
  border-bottom: 2px solid var(--forest);
}

/* Header 文字式下划线 CTA */
.header-cta-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--old-red);
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
  white-space: nowrap;
}

.header-cta-link:hover {
  color: var(--old-red);
  text-decoration-color: var(--ink);
}

/* 移动端汉堡按钮 (桌面端隐藏) */
.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--rule);
  padding: 6px 10px;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
  border-radius: 2px;
  font-family: var(--font-sans);
}

.mobile-nav-drawer {
  display: none;
}

/* ==================================================
   HERO 现代航海日志封面
================================================== */
.hero-logbook-cover {
  padding: 56px 0 60px;
  background-color: var(--paper);
  border-bottom: 1px solid var(--rule-dark);
  position: relative;
  overflow: hidden;
}

.cover-grid {
  display: grid;
  grid-template-columns: 180px 1px minmax(0, 1fr) 220px;
  gap: 36px;
  align-items: stretch;
}

/* 封面左侧：刊物头与卷号 */
.cover-meta-col {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cover-journal-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.25;
}

.cover-year {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

.cover-vol-box {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}

.cover-vol-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--forest);
  background-color: var(--paper-light);
  padding: 4px 10px;
  border: 1px solid var(--rule);
  margin-bottom: 12px;
}

.cover-theme-title {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--ink);
  line-height: 1.4;
}

/* 版芯竖线 */
.cover-v-rule {
  background-color: var(--rule-dark);
  width: 1px;
}

/* 封面中区：核心大字与正文 */
.cover-center-col {
  padding: 0 10px;
}

.cover-main-punch {
  font-family: var(--font-serif);
  font-size: clamp(34px, 3.8vw, 50px);
  color: var(--forest-dark);
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.cover-h1 {
  font-size: clamp(24px, 2.5vw, 34px);
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 22px;
  line-height: 1.4;
}

.cover-lead-text {
  font-size: 17.5px;
  line-height: 1.95;
  color: var(--body);
  max-width: 680px;
  margin-bottom: 32px;
}

.cover-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}

.btn-editorial-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper-white);
  background-color: var(--forest);
  padding: 10px 22px;
  border-radius: 2px;
  transition: background-color 0.15s ease;
}

.btn-editorial-primary:hover {
  background-color: var(--forest-dark);
  color: var(--paper-white);
}

.btn-editorial-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.btn-editorial-text:hover {
  color: var(--forest);
}

.btn-editorial-review {
  font-size: 14.5px;
  color: var(--old-red);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.btn-editorial-review:hover {
  color: var(--ink);
}

/* 封面右侧：大编号与本期目录提示 */
.cover-right-col {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-left: 1px solid var(--rule);
  padding-left: 32px;
}

.cover-big-number {
  font-family: var(--font-mono);
  font-size: clamp(68px, 6vw, 108px);
  line-height: 0.9;
  font-weight: 700;
  color: var(--old-gold);
  opacity: 0.75;
  user-select: none;
}

.cover-index-box {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}

.cover-index-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.cover-index-list {
  list-style: none;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ink);
}

.cover-index-list li {
  display: flex;
  gap: 8px;
}

.cover-index-list .idx {
  font-family: var(--font-mono);
  color: var(--forest);
  font-weight: 600;
}

/* ==================================================
   SECTION 通用版芯与大编号
================================================== */
.section-wrapper {
  padding: 68px 0;
  border-bottom: 1px solid var(--rule);
  position: relative;
}

.section-wrapper.bg-light {
  background-color: var(--paper-light);
}

.section-wrapper.bg-white {
  background-color: var(--paper-white);
}

.section-header-editorial {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--rule-dark);
  padding-bottom: 16px;
}

.section-num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--old-gold);
  line-height: 1;
}

.section-title {
  font-size: clamp(24px, 2.6vw, 34px);
  color: var(--ink);
  margin: 0;
}

.section-subtitle-tag {
  font-size: 13px;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  margin-left: auto;
}

/* ==================================================
   本期导读 (纵向目录式)
================================================== */
.editorial-guide-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: start;
}

.guide-intro-text {
  font-size: 18px;
  line-height: 2;
  color: var(--ink);
}

.guide-vertical-toc {
  list-style: none;
  border-top: 1px solid var(--rule);
}

.guide-vertical-toc li {
  border-bottom: 1px solid var(--rule);
  padding: 12px 4px;
}

.guide-vertical-toc a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

.guide-vertical-toc a:hover {
  color: var(--forest);
}

.guide-vertical-toc .toc-num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--forest);
  margin-right: 14px;
}

/* ==================================================
   01 套餐/流量/节点/线路 (四栏不等宽版芯)
================================================== */
.four-cols-unequal {
  display: grid;
  grid-template-columns: 24% 18% 34% 24%;
  gap: 0;
  border: 1px solid var(--rule-dark);
  background-color: var(--paper-light);
  margin-bottom: 40px;
}

.four-col-item {
  padding: 28px 22px;
  border-right: 1px solid var(--rule);
}

.four-col-item:last-child {
  border-right: none;
}

.four-col-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--forest);
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.four-col-heading {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--ink);
  margin-bottom: 14px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px;
}

.four-col-desc {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--body);
}

/* 出版物风格 HTML 表格 */
.pub-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin-top: 28px;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.pub-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 15px;
  line-height: 1.7;
}

.pub-table th {
  padding: 14px 16px;
  font-family: var(--font-serif);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--rule-dark);
  background-color: var(--paper-light);
  white-space: nowrap;
}

.pub-table td {
  padding: 14px 16px;
  color: var(--body);
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.pub-table tr:hover td {
  background-color: rgba(62, 80, 70, 0.03);
}

.pub-table strong {
  color: var(--ink);
  font-weight: 600;
}

/* ==================================================
   02 节点与服务器 (大字节点 / 小字服务器)
================================================== */
.node-server-editorial-box {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 36px;
  padding: 36px;
  background-color: var(--paper-white);
  border: 1px solid var(--rule-dark);
  align-items: center;
  margin-bottom: 28px;
}

.ns-left-col {
  text-align: left;
}

.ns-big-title {
  font-family: var(--font-serif);
  font-size: clamp(38px, 4.5vw, 60px);
  color: var(--forest-dark);
  line-height: 1.1;
  margin-bottom: 12px;
}

.ns-sub {
  font-size: 16px;
  color: var(--muted);
}

.ns-mid-rule {
  background-color: var(--rule-dark);
  width: 1px;
  height: 100%;
  min-height: 140px;
}

.ns-right-col {
  text-align: left;
}

.ns-mid-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 2.8vw, 34px);
  color: var(--navy);
  margin-bottom: 8px;
}

.ns-statement {
  font-family: var(--font-serif);
  font-size: 19px;
  color: var(--old-red);
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--rule-dark);
}

/* ==================================================
   03 & 04 节点地区与档案记录
================================================== */
.region-index-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 24px;
}

.region-archive-entry {
  background-color: var(--paper-light);
  border: 1px solid var(--rule-dark);
  padding: 24px 26px;
  position: relative;
}

.region-archive-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 12px;
  margin-bottom: 14px;
}

.region-archive-name {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--ink);
  font-weight: 600;
}

.region-archive-coord {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.region-archive-body {
  font-size: 15.5px;
  line-height: 1.85;
}

.region-archive-row {
  margin-bottom: 10px;
}

.region-archive-label {
  font-weight: 600;
  color: var(--ink);
  margin-right: 6px;
}

.region-archive-caveat {
  color: var(--old-red);
}

/* ==================================================
   06 客户端/订阅/配置/节点关系注释
================================================== */
.relation-flow-box {
  background-color: var(--paper-white);
  border: 1px solid var(--rule-dark);
  padding: 32px;
  margin-top: 24px;
}

.relation-step-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.relation-step-item {
  border-top: 2px solid var(--forest);
  padding-top: 14px;
}

.relation-step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--old-gold);
  margin-bottom: 6px;
}

.relation-step-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--ink);
  margin-bottom: 10px;
}

.relation-step-desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body);
}

/* ==================================================
   07 Clash 与 Clash Verge (双栏释义)
================================================== */
.term-duo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 24px;
}

.term-duo-card {
  background-color: var(--paper-light);
  border: 1px solid var(--rule-dark);
  padding: 30px;
}

.term-duo-title {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--forest-dark);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px;
}

/* ==================================================
   08 设备索引页 (D01 ~ D04)
================================================== */
.device-index-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.device-index-item {
  border: 1px solid var(--rule);
  background-color: var(--paper-white);
  padding: 24px 20px;
}

.device-code {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--old-gold);
  margin-bottom: 6px;
}

.device-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--ink);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 6px;
}

.device-desc {
  font-size: 14.5px;
  line-height: 1.75;
}

/* ==================================================
   09 DNS 与系统代理 (双页杂志感)
================================================== */
.double-page-spread {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background-color: var(--paper-light);
  border: 1px solid var(--rule-dark);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.02);
  margin-top: 24px;
}

.page-half {
  padding: 36px 32px;
}

.page-half:first-child {
  border-right: 1px solid var(--rule-dark);
}

.page-corner-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

/* ==================================================
   10 平台索引页 (AI vs 流媒体)
================================================== */
.platform-spread-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 24px;
}

.platform-column {
  background-color: var(--paper-white);
  border: 1px solid var(--rule-dark);
  padding: 30px;
}

.platform-col-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 10px;
  margin-bottom: 16px;
}

.platform-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.platform-pill {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 3px 9px;
  background-color: var(--paper);
  border: 1px solid var(--rule);
  color: var(--ink);
}

.platform-shared-banner {
  grid-column: 1 / -1;
  background-color: var(--old-gold-soft);
  border: 1px solid var(--old-gold);
  padding: 18px 24px;
  font-size: 15px;
  color: var(--ink);
}

/* ==================================================
   11 最容易混淆的概念 (杂志校对页)
================================================== */
.proofreading-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.proofreading-card {
  background-color: var(--paper-white);
  border: 1px solid var(--rule);
  padding: 20px 24px;
}

.proofreading-pair {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px;
}

.proofreading-not-eq {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--old-red);
  font-weight: 700;
}

.proofreading-note {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body);
}

/* ==================================================
   12 杨帆云知识型深度评测专题
================================================== */
.feature-review-box {
  background-color: var(--paper-white);
  border: 2px solid var(--forest);
  padding: 40px;
  margin-top: 24px;
  position: relative;
}

.feature-top-badge {
  display: inline-block;
  background-color: var(--forest);
  color: var(--paper-white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  margin-bottom: 16px;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
}

.feature-title {
  font-size: clamp(26px, 2.8vw, 36px);
  margin-bottom: 16px;
  color: var(--ink);
}

.feature-summary {
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--body);
  margin-bottom: 24px;
}

.feature-link-list {
  border-left: 1px solid var(--rule-dark);
  padding-left: 28px;
}

.feature-link-list h4 {
  font-size: 15px;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.feature-link-list ul {
  list-style: none;
  font-size: 14.5px;
  line-height: 2;
}

.feature-link-list a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.feature-link-list a:hover {
  color: var(--forest);
}

/* ==================================================
   13 舱单价目 / 出版价目页 (非卡片式)
================================================== */
.manifest-pricing-wrap {
  margin-top: 28px;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  background-color: var(--paper-light);
}

.manifest-row {
  display: grid;
  grid-template-columns: 80px 180px 180px 180px minmax(0, 1fr) 140px;
  gap: 16px;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--rule);
  transition: background-color 0.15s ease;
}

.manifest-row:last-child {
  border-bottom: none;
}

.manifest-row:hover {
  background-color: rgba(62, 80, 70, 0.03);
}

.manifest-row.recommended {
  background-color: var(--old-gold-soft);
  position: relative;
}

.manifest-code {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--old-gold);
}

.manifest-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-recommended {
  display: inline-block;
  background-color: var(--old-red);
  color: var(--paper-white);
  font-size: 11px;
  font-family: var(--font-sans);
  padding: 2px 6px;
  border-radius: 2px;
  font-weight: 500;
}

.manifest-data {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--forest-dark);
}

.manifest-price {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.manifest-scenario {
  font-size: 14px;
  color: var(--muted);
}

.manifest-action {
  text-align: right;
}

.manifest-cta-btn {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
  white-space: nowrap;
}

.manifest-cta-btn:hover {
  color: var(--old-red);
}

.manifest-recommended-btn {
  display: inline-block;
  background-color: var(--forest);
  color: var(--paper-white) !important;
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 2px;
}

.manifest-recommended-btn:hover {
  background-color: var(--forest-dark);
}

.manifest-notice {
  padding: 16px 24px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px dashed var(--rule-dark);
  background-color: var(--paper);
}

/* ==================================================
   14 出版目录式文章索引 (按组 I, II, III...)
================================================== */
.toc-group-list {
  display: flex;
  flex-direction: column;
  gap: 36px;
  margin-top: 28px;
}

.toc-group-block {
  display: grid;
  grid-template-columns: 80px 220px minmax(0, 1fr);
  gap: 28px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--rule-dark);
}

.toc-group-num {
  font-family: var(--font-serif);
  font-size: 42px;
  line-height: 1;
  font-weight: 700;
  color: var(--old-gold);
}

.toc-group-meta h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--ink);
}

.toc-group-meta p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.6;
}

.toc-group-articles {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.toc-article-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  border-bottom: 1px dashed var(--rule);
  padding: 10px 8px;
  border-radius: 2px;
  transition: background-color 0.15s ease;
}

.toc-article-item:hover {
  background-color: rgba(62, 80, 70, 0.05);
}

.toc-article-link {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.15s ease;
}

.toc-article-link:hover {
  color: var(--forest);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.toc-article-meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ==================================================
   15 常见问题 (问答页布局，无卡片墙)
================================================== */
.faq-pub-list {
  display: flex;
  flex-direction: column;
  margin-top: 24px;
  border-top: 1px solid var(--rule-dark);
}

.faq-pub-item {
  border-bottom: 1px solid var(--rule);
  padding: 22px 4px;
}

.faq-pub-header {
  display: flex;
  align-items: baseline;
  gap: 18px;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  padding: 0;
  color: inherit;
  font: inherit;
}

.faq-code {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--forest);
  min-width: 42px;
}

.faq-question {
  font-family: var(--font-serif);
  font-size: 18.5px;
  font-weight: 600;
  color: var(--ink);
  flex-grow: 1;
}

.faq-answer {
  padding-top: 14px;
  padding-left: 60px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--body);
}

/* ==================================================
   FOOTER (墨绿出版目录)
================================================== */
.site-footer {
  background-color: var(--forest-dark);
  color: #F6F2E9;
  padding: 56px 0 32px;
  margin-top: auto;
  position: relative;
  overflow: hidden;
  border-top: 3px solid var(--old-gold);
}

.footer-watermark {
  position: absolute;
  right: 20px;
  bottom: 10px;
  font-family: var(--font-mono);
  font-size: 140px;
  line-height: 1;
  font-weight: 900;
  color: #FFFFFF;
  opacity: 0.035;
  pointer-events: none;
  user-select: none;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(216, 208, 194, 0.2);
}

.footer-brand-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: #F6F2E9;
  margin-bottom: 10px;
}

.footer-brand-desc {
  font-size: 14px;
  color: #C9C9BE;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-col-title {
  font-family: var(--font-serif);
  font-size: 16px;
  color: #F6F2E9;
  font-weight: 600;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(216, 208, 194, 0.2);
  padding-bottom: 8px;
}

.footer-nav-list {
  list-style: none;
  font-size: 14px;
  line-height: 2;
}

.footer-nav-list a {
  color: #C9C9BE;
}

.footer-nav-list a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.footer-cta-box {
  margin-top: 14px;
}

.footer-cta-btn {
  display: inline-block;
  color: var(--old-gold-soft);
  font-size: 14px;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-cta-btn:hover {
  color: #FFFFFF;
}

/* 友情链接 */
.footer-friendly-links {
  padding: 24px 0;
  border-bottom: 1px solid rgba(216, 208, 194, 0.15);
  font-size: 13.5px;
  color: #C9C9BE;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
}

.footer-friendly-links span {
  color: #F6F2E9;
  font-weight: 600;
}

.footer-friendly-links a {
  color: #C9C9BE;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-friendly-links a:hover {
  color: #FFFFFF;
}

.footer-bottom-bar {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #929087;
}

/* ==================================================
   文章内页排版 (高级中文长文出版物)
================================================== */
.article-header {
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--rule-dark);
  margin-bottom: 40px;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 18px;
}

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

.article-num-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--old-gold);
  background-color: var(--paper-light);
  border: 1px solid var(--rule);
  padding: 3px 10px;
  margin-bottom: 16px;
}

.article-lead {
  font-size: 19px;
  line-height: 1.95;
  color: var(--ink);
  margin-top: 20px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--muted);
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
}

/* 快速结论盒子 */
.quick-conclusion-box {
  background-color: var(--old-gold-soft);
  border-top: 3px solid var(--old-gold);
  padding: 24px 28px;
  margin: 32px 0 40px;
}

.quick-conclusion-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.quick-conclusion-box p {
  color: var(--ink);
  font-size: 16.5px;
  line-height: 1.85;
}

/* 文章正文 */
.article-body-content {
  font-size: 17.5px;
  line-height: 1.95;
  color: var(--body);
}

.article-body-content h2 {
  font-size: 26px;
  color: var(--ink);
  margin-top: 48px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 10px;
}

.article-body-content h3 {
  font-size: 20px;
  color: var(--forest-dark);
  margin-top: 32px;
  margin-bottom: 14px;
}

.article-body-content blockquote {
  border-left: 3px solid var(--forest);
  padding: 14px 20px;
  background-color: var(--paper-light);
  margin: 24px 0;
  font-size: 16.5px;
  color: var(--ink);
}

.article-body-content ul, 
.article-body-content ol {
  margin: 20px 0;
  padding-left: 24px;
}

.article-body-content li {
  margin-bottom: 8px;
}

/* 文章目录 (TOC) */
.article-toc-box {
  background-color: var(--paper-light);
  border: 1px solid var(--rule);
  padding: 20px 24px;
  margin: 28px 0 36px;
}

.article-toc-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 6px;
}

.article-toc-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
}

.article-toc-box a {
  color: var(--ink);
}

.article-toc-box a:hover {
  color: var(--forest);
  text-decoration: underline;
}

/* 关联阅读区 */
.related-reads-section {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 2px solid var(--ink);
}

.related-reads-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.related-read-item {
  border: 1px solid var(--rule);
  background-color: var(--paper-light);
  padding: 18px 20px;
}

.related-read-item h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.related-read-item p {
  font-size: 13.5px;
  color: var(--muted);
}

/* ==================================================
   分类页扉页 HERO
================================================== */
.category-page-hero {
  padding: 56px 0 44px;
  border-bottom: 1px solid var(--rule-dark);
  background-color: var(--paper-light);
}

.category-hero-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.category-chap-num {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: var(--old-gold);
  line-height: 1;
  margin-bottom: 12px;
}

.category-hero-title {
  font-size: clamp(28px, 3.2vw, 42px);
  margin-bottom: 14px;
}

.category-hero-desc {
  font-size: 17px;
  line-height: 1.85;
  color: var(--body);
  max-width: 680px;
}

.category-count-badge {
  font-family: var(--font-mono);
  font-size: 13px;
  background-color: var(--paper-white);
  border: 1px solid var(--rule);
  padding: 6px 14px;
  color: var(--forest);
  white-space: nowrap;
}

/* ==================================================
   响应式断点适配
   375px, 390px, 430px, 768px, 1024px, 1440px
================================================== */
@media (max-width: 1024px) {
  .cover-grid {
    grid-template-columns: 140px 1px minmax(0, 1fr);
  }
  .cover-right-col {
    display: none;
  }
  .manifest-row {
    grid-template-columns: 60px 140px 140px 140px minmax(0, 1fr) 120px;
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .header-topbar {
    display: none;
  }
  .header-nav-bar {
    height: 52px;
  }
  .nav-links {
    display: none;
  }
  .mobile-menu-btn {
    display: inline-block;
  }
  .mobile-nav-drawer {
    display: block;
    position: fixed;
    top: 52px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--paper-light);
    border-top: 1px solid var(--rule);
    padding: 24px;
    overflow-y: auto;
    z-index: 899;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .mobile-nav-drawer.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .mobile-nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-size: 17px;
  }
  .mobile-nav-list a {
    color: var(--ink);
    font-weight: 500;
    display: block;
    padding: 6px 0;
    border-bottom: 1px solid var(--rule);
  }
  
  /* 封面在移动端单列排版 */
  .cover-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  .cover-v-rule {
    display: none;
  }
  .editorial-guide-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .four-cols-unequal {
    grid-template-columns: 1fr;
  }
  .four-col-item {
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }
  .four-col-item:last-child {
    border-bottom: none;
  }
  .node-server-editorial-box {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 24px;
  }
  .ns-mid-rule {
    display: none;
  }
  .region-index-grid,
  .term-duo-grid,
  .double-page-spread,
  .platform-spread-grid,
  .proofreading-grid,
  .device-index-grid,
  .related-reads-grid {
    grid-template-columns: 1fr;
  }
  .relation-step-list {
    grid-template-columns: 1fr;
  }
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .feature-link-list {
    border-left: none;
    border-top: 1px solid var(--rule-dark);
    padding-left: 0;
    padding-top: 20px;
  }
  
  /* 舱单价目移动端转化为单列卡片块阅读 */
  .manifest-row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 20px;
  }
  .manifest-action {
    width: 100%;
    text-align: left;
    margin-top: 8px;
    padding-top: 10px;
    border-top: 1px dashed var(--rule);
  }
  
  .toc-group-block {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .faq-answer {
    padding-left: 0;
  }
  .category-hero-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

/* 动效支持与无障碍要求 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}