/* ================================================
   J9九游会 · 共享站点样式 /assets/site.css
   设计语言：竞技指令舱 · 模块化Bento · 切角与斜线
   分区：变量 / 重置 / 排版 / 布局 / 页头 / 页脚 /
        组件 / 工具类 / 响应式 / 无障碍
================================================ */

/* ---------- 一、设计变量 ---------- */
:root {
  --color-primary: #0B3B4A;
  --color-primary-deep: #082D39;
  --color-primary-foreground: #F5F4F0;
  --color-gold: #D4AF37;
  --color-gold-light: #E8C857;
  --color-gold-dark: #B8962E;
  --color-red: #E04F3D;
  --color-red-dark: #C13B2B;
  --color-wine: #6D2B3B;
  --color-indigo: #47597A;
  --color-text-dark: #1F2A2E;
  --color-text-medium: #455A64;
  --color-text-light: #E8E8E8;
  --color-border: #D8D5CB;
  --color-border-strong: #C9A227;
  --color-bg: #F5F4F0;
  --color-bg-alt: #ECEAE2;
  --color-card: #FFFFFF;

  --font-heading: "Source Han Sans CN", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "WenQuanYi Micro Hei", sans-serif;
  --font-body: "Source Han Serif CN", "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --font-label: "Source Han Sans CN", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;

  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --container: 1200px;
  --container-narrow: 820px;
  --header-meta-height: 40px;
  --header-main-height: 84px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  --z-header: 100;
  --z-nav: 101;
  --z-progress: 210;
  --z-skip: 300;
  --z-backtop: 90;
}

/* ---------- 二、重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-dark);
  background: var(--color-bg);
  min-height: 100vh;
}

img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

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

[hidden] {
  display: none !important;
}

/* ---------- 三、排版基础 ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-text-dark);
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
}

h3 {
  font-size: 1.2rem;
}

p {
  margin-bottom: 1em;
}

.prose {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.9;
}

.prose > * + * {
  margin-top: 1rem;
}

.prose h2 {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 2px solid rgba(212, 175, 55, 0.4);
}

.prose h3 {
  margin-top: 1.5rem;
}

.prose a {
  color: var(--color-gold-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose ul {
  list-style: square;
  padding-left: 1.25rem;
}

.prose blockquote {
  border-left: 4px solid var(--color-gold);
  padding-left: 1.25rem;
  color: var(--color-text-medium);
  font-style: italic;
}

/* ---------- 四、布局容器 ---------- */
.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

.container--narrow {
  width: min(var(--container-narrow), calc(100% - 48px));
  margin-inline: auto;
}

.section {
  padding: var(--space-2xl) 0;
}

.section--dark {
  background: var(--color-primary);
  color: var(--color-text-light);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: #fff;
}

.section--wine {
  background: var(--color-wine);
  color: var(--color-text-light);
}

.section--wine h1,
.section--wine h2,
.section--wine h3 {
  color: #fff;
}

.section--gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-text-dark);
}

/* ---------- 五、无障碍与焦点 ---------- */
:focus-visible {
  outline: 3px solid var(--color-border-strong);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: var(--z-skip);
  background: var(--color-gold);
  color: var(--color-text-dark);
  font-family: var(--font-label);
  font-weight: 700;
  padding: 12px 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 12px;
}

/* ---------- 六、页头 ---------- */
.site-header {
  position: relative;
  z-index: var(--z-header);
  box-shadow: 0 2px 12px rgba(11, 59, 74, 0.08);
}

.header-meta {
  background: var(--color-primary);
  color: rgba(245, 244, 240, 0.85);
  font-family: var(--font-label);
  font-size: 0.8rem;
}

.header-meta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: var(--header-meta-height);
}

.header-meta__status {
  margin: 0;
  letter-spacing: 0.04em;
}

.header-meta__support {
  color: var(--color-gold);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.header-meta__support:hover {
  color: var(--color-gold-light);
}

.header-primary {
  background: var(--color-bg);
  border-bottom: 2px solid rgba(212, 175, 55, 0.35);
}

.header-primary__inner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  min-height: var(--header-main-height);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

/* ---------- 七、品牌 Logo ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text-dark);
  font-family: var(--font-heading);
  line-height: 1;
}

.brand__mark {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--color-primary);
  color: var(--color-gold);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}

.brand__mark::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 5px;
  right: 10px;
  bottom: 10px;
  border: 1px solid rgba(212, 175, 55, 0.4);
}

.brand__name {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: inherit;
}

.brand__tag {
  align-self: flex-end;
  margin-bottom: 4px;
  padding: 1px 5px;
  font-family: var(--font-label);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-red);
  border: 1px solid var(--color-red);
  letter-spacing: 0.08em;
}

/* ---------- 八、导航 ---------- */
.site-nav {
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
  counter-reset: nav-counter;
}

.site-nav__item {
  counter-increment: nav-counter;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  font-family: var(--font-label);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-dark);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-nav__link::before {
  content: "0" counter(nav-counter);
  display: inline-block;
  margin-right: 4px;
  font-size: 0.68em;
  color: var(--color-gold-dark);
  vertical-align: super;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: transparent;
  transition: background-color var(--transition-fast);
}

.site-nav__link:hover {
  background-color: rgba(212, 175, 55, 0.12);
  color: var(--color-primary);
}

.site-nav__link[aria-current="page"] {
  background-color: rgba(212, 175, 55, 0.18);
  color: var(--color-primary);
  font-weight: 700;
}

.site-nav__link[aria-current="page"]::after {
  background: var(--color-gold);
}

/* ---------- 九、CN徽章与汉堡 ---------- */
.cn-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 8px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-text-dark);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.cn-badge:hover {
  transform: translateY(-1px);
  filter: brightness(1.06);
}

.cn-badge__flag {
  background: var(--color-red);
  color: #fff;
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 6px;
  letter-spacing: 0.04em;
}

.cn-badge__text {
  font-family: var(--font-label);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--color-primary);
  border: 1px solid var(--color-gold);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
  background: var(--color-primary-deep);
}

.nav-toggle__line {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle--active .nav-toggle__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle--active .nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.nav-toggle--active .nav-toggle__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 十、页脚 ---------- */
.site-footer {
  background: var(--color-primary);
  color: var(--color-text-light);
  margin-top: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.site-footer__accent {
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-red) 35%, var(--color-wine) 68%, var(--color-primary) 100%);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.6fr;
  gap: var(--space-2xl);
  padding: var(--space-2xl) 0 var(--space-xl);
}

.site-footer__brand .brand__name {
  color: #fff;
}

.site-footer__brand .brand__mark {
  background: var(--color-gold);
  color: var(--color-primary);
}

.site-footer__brand .brand__mark::after {
  border-color: rgba(11, 59, 74, 0.35);
}

.site-footer__trust {
  margin-top: var(--space-md);
  max-width: 320px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(245, 244, 240, 0.75);
}

.site-footer__heading {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
  font-family: var(--font-label);
}

.site-footer__links a {
  display: inline-block;
  padding: 4px 0;
  font-family: var(--font-label);
  font-size: 0.9rem;
  color: rgba(245, 244, 240, 0.8);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.site-footer__links a:hover {
  color: var(--color-gold);
  transform: translateX(3px);
}

.site-footer__contact {
  display: grid;
  gap: 8px;
}

.site-footer__contact li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 8px;
  align-items: baseline;
}

.site-footer__label {
  font-family: var(--font-label);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--color-gold);
}

.site-footer__value {
  font-size: 0.92rem;
  color: rgba(245, 244, 240, 0.9);
}

.site-footer__support {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--color-red);
  font-size: 0.88rem;
  color: rgba(245, 244, 240, 0.72);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: var(--space-lg) 0;
  border-top: 1px solid rgba(245, 244, 240, 0.12);
  font-size: 0.85rem;
  color: rgba(245, 244, 240, 0.55);
  font-family: var(--font-label);
}

/* ---------- 十一、按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-label);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  position: relative;
}

.btn::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 14px;
  height: 14px;
  background: linear-gradient(135deg, transparent 50%, rgba(255, 255, 255, 0.25) 50%, rgba(255, 255, 255, 0.25) 100%);
}

.btn--gold {
  background: var(--color-gold);
  color: var(--color-text-dark);
}

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

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

.btn--red:hover {
  background: var(--color-red-dark);
}

.btn--outline {
  border-color: var(--color-gold);
  color: var(--color-gold-dark);
}

.btn--outline:hover {
  background: var(--color-gold);
  color: var(--color-text-dark);
  border-color: var(--color-gold);
}

.btn--small {
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* ---------- 十二、标签与状态 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-label);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.badge--gold {
  background: var(--color-gold);
  color: var(--color-text-dark);
}

.badge--red {
  background: var(--color-red);
  color: #fff;
}

.tag {
  display: inline-block;
  padding: 2px 10px;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text-medium);
  font-family: var(--font-label);
  font-size: 0.8rem;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.tag:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-dark);
}

/* ---------- 十三、章节标题 ---------- */
.section-heading {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.section-heading__cn {
  font-size: 1.75rem;
  font-weight: 900;
  white-space: nowrap;
}

.section-heading__en {
  font-family: var(--font-label);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  white-space: nowrap;
}

.section-heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-gold), transparent);
}

/* ---------- 十四、卡片与面板 ---------- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(11, 59, 74, 0.08);
}

.panel {
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-gold);
  padding: var(--space-xl);
}

.panel--dark {
  background: var(--color-primary);
  color: var(--color-text-light);
}

.panel--dark h2,
.panel--dark h3 {
  color: #fff;
}

/* ---------- 十五、Bento 网格 ---------- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

.bento-card {
  grid-column: span 4;
  min-height: 200px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  position: relative;
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.bento-card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(11, 59, 74, 0.1);
}

.bento-card--wide {
  grid-column: span 6;
}

.bento-card--full {
  grid-column: span 12;
}

.bento-card--tall {
  min-height: 340px;
}

.bento-card--accent {
  background: var(--color-primary);
  color: var(--color-text-light);
}

.bento-card--accent h3 {
  color: #fff;
}

.bento-card--gold {
  background: var(--color-gold);
  color: var(--color-text-dark);
}

.bento-card--wine {
  background: var(--color-wine);
  color: var(--color-text-light);
}

.bento-card--wine h3 {
  color: #fff;
}

.bento-card--indigo {
  background: var(--color-indigo);
  color: var(--color-text-light);
}

.bento-card--indigo h3 {
  color: #fff;
}

/* ---------- 十六、视觉容器 ---------- */
.visual-frame {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-alt);
  aspect-ratio: 16 / 9;
}

.visual-frame--portrait {
  aspect-ratio: 3 / 4;
}

.visual-frame--square {
  aspect-ratio: 1 / 1;
}

.visual-frame--wide {
  aspect-ratio: 21 / 9;
}

.visual-frame__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 十七、面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-lg);
  font-family: var(--font-label);
  font-size: 0.85rem;
  color: var(--color-text-medium);
}

.breadcrumbs a {
  transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
  color: var(--color-gold-dark);
}

.breadcrumbs__sep {
  color: var(--color-gold);
}

/* ---------- 十八、页面首屏 ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-indigo) 55%, var(--color-wine) 100%);
  color: var(--color-text-light);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(45deg, transparent, transparent 18px, rgba(255, 255, 255, 0.04) 18px, rgba(255, 255, 255, 0.04) 19px);
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border: 3px solid rgba(212, 175, 55, 0.25);
  transform: rotate(25deg);
  background: linear-gradient(90deg, transparent 48%, rgba(212, 175, 55, 0.28) 49%, rgba(212, 175, 55, 0.28) 51%, transparent 52%);
}

.page-hero__inner {
  position: relative;
  z-index: 1;
}

.page-hero__title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
  color: #fff;
}

.page-hero__sub {
  font-size: 1.15rem;
  max-width: 640px;
  color: rgba(245, 244, 240, 0.85);
}

.page-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: var(--space-lg);
}

/* ---------- 十九、数据表格 ---------- */
.table-wrap {
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-label);
  font-size: 0.95rem;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.data-table th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background: rgba(212, 175, 55, 0.08);
}

/* ---------- 二十、时间轴 ---------- */
.timeline {
  position: relative;
  padding-left: 32px;
  margin: var(--space-lg) 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold), var(--color-primary), var(--color-red));
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-xl);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border: 2px solid var(--color-gold);
  transform: rotate(45deg);
}

.timeline__date {
  display: block;
  font-family: var(--font-label);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-gold-dark);
  margin-bottom: 4px;
}

/* ---------- 二十一、提示框 ---------- */
.notice {
  padding: 16px 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-indigo);
  font-family: var(--font-label);
  font-size: 0.95rem;
  margin: var(--space-lg) 0;
}

.notice--success {
  border-left-color: #2E7D32;
}

.notice--warning {
  border-left-color: #F9A825;
  background: #FFF8E1;
}

.notice--error {
  border-left-color: var(--color-red);
  background: #FDECEA;
}

/* ---------- 二十二、折叠面板 ---------- */
.accordion__item {
  border: 1px solid var(--color-border);
  background: var(--color-card);
  margin-bottom: 10px;
  transition: border-color var(--transition-fast);
}

.accordion__item:hover {
  border-color: var(--color-border-strong);
}

.accordion__trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  font-family: var(--font-label);
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  color: var(--color-text-dark);
  transition: background-color var(--transition-fast);
}

.accordion__trigger:hover {
  background: rgba(212, 175, 55, 0.06);
}

.accordion__trigger::after {
  content: "+";
  flex-shrink: 0;
  font-size: 1.25rem;
  color: var(--color-gold-dark);
  line-height: 1;
}

.accordion__trigger[aria-expanded="true"]::after {
  content: "−";
}

.accordion__panel {
  padding: 0 20px 16px;
  border-top: 1px solid var(--color-border);
}

.accordion__panel > p {
  margin-top: 12px;
  margin-bottom: 0;
}

/* ---------- 二十三、筛选与分页 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
}

.filter-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  font-family: var(--font-label);
  font-size: 0.85rem;
  color: var(--color-text-medium);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-dark);
}

.filter-btn.is-active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  font-weight: 600;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--space-xl);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 10px;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  font-family: var(--font-label);
  font-size: 0.9rem;
  color: var(--color-text-dark);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.pagination a:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-dark);
}

.pagination .is-active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  font-weight: 700;
}

/* ---------- 二十四、工具类与装饰 ---------- */
.text-gold {
  color: var(--color-gold-dark);
}

.text-red {
  color: var(--color-red);
}

.text-muted {
  color: var(--color-text-medium);
}

.bg-primary {
  background: var(--color-primary);
  color: var(--color-text-light);
}

.bg-gold {
  background: var(--color-gold);
  color: var(--color-text-dark);
}

.bg-wine {
  background: var(--color-wine);
  color: var(--color-text-light);
}

.bg-indigo {
  background: var(--color-indigo);
  color: var(--color-text-light);
}

.slash-line {
  display: inline-block;
  width: 42px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-red));
  transform: skewX(-25deg);
}

.v-text {
  writing-mode: vertical-rl;
  font-family: var(--font-label);
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-medium);
}

.v-text--gold {
  color: var(--color-gold-dark);
}

.command-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 14px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-gold);
  font-family: var(--font-label);
}

.command-bar__item {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.85rem;
  color: var(--color-text-medium);
  border-left: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.command-bar__item:hover {
  color: var(--color-primary);
}

.command-bar__item.is-active,
.command-bar__item[aria-current="true"] {
  color: var(--color-primary);
  border-left-color: var(--color-gold);
  font-weight: 700;
  background: rgba(212, 175, 55, 0.08);
}

/* ---------- 二十五、联系信息块 ---------- */
.contact-block {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-gold);
  padding: var(--space-xl);
}

.contact-block__item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-block__item:last-child {
  border-bottom: none;
}

.contact-block__label {
  font-family: var(--font-label);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--color-gold-dark);
}

/* ---------- 二十六、返回顶部与滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-red));
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: var(--z-progress);
  pointer-events: none;
}

.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--color-primary);
  color: #fff;
  border: 1px solid var(--color-gold);
  font-family: var(--font-label);
  font-size: 0.85rem;
  z-index: var(--z-backtop);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility 0s linear var(--transition-base);
}

.back-top--visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility 0s linear 0s;
}

.back-top:hover {
  background: var(--color-gold);
  color: var(--color-text-dark);
}

/* ---------- 二十七、响应式：平板与手机 ---------- */
@media (max-width: 1023.98px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 2px);
    left: 0;
    right: 0;
    display: none;
    background: var(--color-primary);
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    border-top: 3px solid var(--color-gold);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.18);
  }

  .site-nav[data-open="true"] {
    display: block;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: block;
    width: 100%;
    padding: var(--space-md) 0;
    color: var(--color-text-light);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] {
    background: rgba(212, 175, 55, 0.14);
    color: var(--color-gold);
    padding-left: 10px;
  }

  .site-nav__link::after {
    display: none;
  }

  .brand__name {
    font-size: 1.5rem;
  }

  .brand__mark {
    width: 46px;
    height: 46px;
    font-size: 1.1rem;
  }

  .site-footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 767.98px) {
  .container {
    width: calc(100% - 32px);
  }

  .container--narrow {
    width: calc(100% - 32px);
  }

  .header-primary__inner {
    gap: var(--space-sm);
    min-height: 68px;
  }

  .brand__name {
    font-size: 1.25rem;
  }

  .brand__mark {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .brand__tag {
    display: none;
  }

  .cn-badge {
    padding: 5px 8px;
  }

  .cn-badge__text {
    display: none;
  }

  .header-meta {
    font-size: 0.75rem;
  }

  .header-meta__inner {
    min-height: 36px;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .bento-card,
  .bento-card--wide {
    grid-column: span 12;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .page-hero {
    padding: var(--space-2xl) 0;
  }

  .back-top {
    right: 16px;
    bottom: 16px;
  }
}

/* ---------- 二十八、减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .card,
  .bento-card,
  .site-nav__link,
  .btn,
  .back-top,
  .cn-badge {
    transition: none;
  }

  .scroll-progress {
    transition: none;
  }
}