/* ============================================================
   PG站台 共享样式 — /assets/site.css
   展览画册式布局 · 悬浮胶囊导航 · 仪表板数据语言
   ============================================================ */

/* 1. 设计变量 */
:root {
  --c-space: #0A1F3C;
  --c-green: #A8FF00;
  --c-gold: #D4AF37;
  --c-cream: #F5F6F8;
  --c-rock: #2E3A4A;
  --c-terra: #B85C3C;
  --c-moss: #4B6F44;
  --c-ink: #1A1F24;

  --font-head: "Noto Sans SC", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-data: "JetBrains Mono", "SF Mono", "SFMono-Regular", "Cascadia Mono", Consolas, monospace;

  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 40px;
  --sp-5: 72px;
  --sp-6: 120px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  --shadow-hard: 6px 6px 0 rgba(10, 31, 60, 0.22);
  --shadow-card: 6px 6px 0 rgba(10, 31, 60, 0.18);
  --shadow-float: 0 12px 32px rgba(10, 31, 60, 0.28);

  --container-w: 1200px;
  --header-h: 76px;
}

/* 2. Reset 与基础 */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 14px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-ink);
  background: var(--c-cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  display: block;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 14px);
  outline: none;
}

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.25;
  color: var(--c-space);
}

p {
  margin: 0 0 1.4em;
}

ul, ol {
  margin: 0 0 1.4em;
  padding-left: 1.4em;
}

a {
  color: var(--c-space);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--c-terra);
}

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

::selection {
  background: var(--c-green);
  color: var(--c-space);
}

:focus:not(:focus-visible) {
  outline: none;
}

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

/* 3. 可访问性 */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 1000;
  padding: 12px 20px;
  background: var(--c-space);
  color: var(--c-green);
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid var(--c-green);
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
  color: var(--c-green);
}

/* 4. 布局容器 */
.container {
  width: min(var(--container-w), 100%);
  margin-inline: auto;
  padding-inline: var(--sp-3);
}

.container--narrow {
  width: min(840px, 100%);
}

.section {
  padding-block: var(--sp-5);
}

.section--tight {
  padding-block: var(--sp-4);
}

.section--dark {
  background: var(--c-space);
  color: rgba(245, 246, 248, 0.82);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--c-cream);
}

.section--dark a:not(.btn) {
  color: var(--c-green);
}

.section--dark a:not(.btn):hover {
  color: var(--c-gold);
}

.section--rock {
  background: var(--c-rock);
  color: rgba(245, 246, 248, 0.82);
}

.section--cream {
  background: var(--c-cream);
}

.section--border-top {
  border-top: 4px solid var(--c-gold);
}

.grid {
  display: grid;
  gap: var(--sp-4);
}

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

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid--gap-lg {
  gap: var(--sp-5);
}

/* 5. 顶部滚动进度条 */
[data-progress] {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--c-green);
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 200;
  pointer-events: none;
}

/* 6. 头部与悬浮胶囊导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 246, 248, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 3px solid var(--c-gold);
  border-bottom: 1px solid rgba(10, 31, 60, 0.08);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  min-height: var(--header-h);
  padding-block: 10px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 6px 18px 6px 6px;
  background: var(--c-space);
  border: 2px solid var(--c-gold);
  border-radius: var(--radius-md);
  text-decoration: none;
  box-shadow: 3px 3px 0 rgba(10, 31, 60, 0.2);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-brand:hover {
  border-color: var(--c-green);
  box-shadow: 3px 3px 0 rgba(168, 255, 0, 0.4);
  text-decoration: none;
}

.site-brand__emblem {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--c-gold);
  color: var(--c-space);
  font-family: var(--font-data);
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1;
  transition: background-color 0.2s ease;
}

.site-brand:hover .site-brand__emblem {
  background: var(--c-green);
}

.site-brand__name {
  margin-left: 10px;
  font-family: var(--font-head);
  font-size: 1.22rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--c-gold);
  transition: color 0.2s ease;
}

.site-brand:hover .site-brand__name {
  color: var(--c-green);
}

.site-nav-capsule {
  padding: 6px;
  background: var(--c-space);
  border: 2px solid var(--c-green);
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 28px rgba(10, 31, 60, 0.35), 0 0 0 1px rgba(168, 255, 0, 0.12);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__link {
  display: block;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: rgba(245, 246, 248, 0.88);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.site-nav__link:hover {
  background: rgba(168, 255, 0, 0.14);
  color: var(--c-green);
  text-decoration: none;
}

.site-nav__link[aria-current="page"] {
  background: var(--c-green);
  color: var(--c-space);
  font-weight: 700;
}

.site-nav__link[aria-current="page"]:hover {
  background: var(--c-green);
  color: var(--c-space);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  padding: 12px;
  background: var(--c-space);
  border: 2px solid var(--c-green);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: box-shadow 0.2s ease;
}

.nav-toggle:hover {
  box-shadow: 0 0 0 4px rgba(168, 255, 0, 0.25);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--c-green);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

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

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

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

/* 7. 按钮体系 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: 2px solid var(--c-space);
  border-radius: var(--radius-sm);
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

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

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: none !important;
}

.btn--primary {
  background: var(--c-green);
  color: var(--c-space);
  box-shadow: 4px 4px 0 var(--c-space);
}

.btn--primary:hover {
  background: var(--c-space);
  border-color: var(--c-green);
  color: var(--c-green);
  box-shadow: 4px 4px 0 var(--c-green);
}

.btn--dark {
  background: var(--c-space);
  color: var(--c-green);
  border-color: var(--c-green);
  box-shadow: 4px 4px 0 var(--c-green);
}

.btn--dark:hover {
  background: var(--c-green);
  color: var(--c-space);
  border-color: var(--c-space);
  box-shadow: 4px 4px 0 var(--c-space);
}

.btn--ghost {
  background: transparent;
  color: var(--c-space);
  border-color: var(--c-space);
  box-shadow: none;
}

.btn--ghost:hover {
  background: rgba(168, 255, 0, 0.12);
  border-color: var(--c-space);
  color: var(--c-space);
  box-shadow: 4px 4px 0 rgba(10, 31, 60, 0.15);
}

.btn--sm {
  padding: 9px 18px;
  font-size: 0.82rem;
}

/* 8. 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 var(--sp-4);
  padding: 14px 0;
  list-style: none;
  font-family: var(--font-data);
  font-size: 0.82rem;
  border-bottom: 1px solid rgba(10, 31, 60, 0.1);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-inline: 6px;
  color: rgba(10, 31, 60, 0.35);
}

.breadcrumb a {
  color: var(--c-space);
  text-decoration: none;
}

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

.breadcrumb [aria-current="page"] {
  color: var(--c-terra);
}

/* 9. 章节标题体系 */
.section-head {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  margin-bottom: var(--sp-4);
}

.section-head__no {
  flex-shrink: 0;
  font-family: var(--font-data);
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--c-space);
  user-select: none;
}

.section-head__title {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 900;
  letter-spacing: 0.02em;
}

.section-head__note {
  align-self: stretch;
  margin-left: auto;
  padding-block: 2px;
  writing-mode: vertical-rl;
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(10, 31, 60, 0.42);
}

.section--dark .section-head__no {
  -webkit-text-stroke-color: var(--c-green);
}

.section--dark .section-head__title {
  color: var(--c-cream);
}

.section--dark .section-head__note {
  color: rgba(245, 246, 248, 0.4);
}

.eyebrow {
  display: inline-block;
  padding: 4px 12px;
  font-family: var(--font-data);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--c-gold);
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.5);
  border-radius: var(--radius-pill);
}

.eyebrow--green {
  color: var(--c-space);
  background: var(--c-green);
  border-color: var(--c-space);
}

.lead {
  font-family: var(--font-head);
  font-size: 1.12rem;
  font-weight: 500;
  line-height: 1.8;
  color: var(--c-space);
}

.section--dark .lead {
  color: rgba(245, 246, 248, 0.88);
}

.note-vertical {
  writing-mode: vertical-rl;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(10, 31, 60, 0.42);
}

.section--dark .note-vertical,
.note-vertical--light {
  color: rgba(245, 246, 248, 0.38);
}

/* 10. 框景与卡片 */
.view-window {
  position: relative;
  background: var(--c-cream);
  border: 3px solid var(--c-space);
  border-radius: 4px;
  box-shadow: 10px 10px 0 rgba(10, 31, 60, 0.18);
}

.view-window__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  background: var(--c-space);
  border-bottom: 2px solid var(--c-green);
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: rgba(245, 246, 248, 0.7);
}

.view-window__body {
  padding: var(--sp-4);
}

.frame {
  position: relative;
  padding: var(--sp-4);
  border: 2px solid var(--c-space);
  border-radius: 4px;
}

.frame::before,
.frame::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  border-style: solid;
  border-color: var(--c-gold);
  pointer-events: none;
}

.frame::before {
  top: -2px;
  left: -2px;
  border-width: 4px 0 0 4px;
}

.frame::after {
  bottom: -2px;
  right: -2px;
  border-width: 0 4px 4px 0;
}

.frame--dark {
  background: var(--c-space);
  border-color: rgba(168, 255, 0, 0.7);
  color: rgba(245, 246, 248, 0.85);
}

.frame--dark h2,
.frame--dark h3,
.frame--dark h4 {
  color: var(--c-cream);
}

.frame--dark::before,
.frame--dark::after {
  border-color: var(--c-green);
}

.card {
  padding: var(--sp-4);
  background: var(--c-cream);
  border: 2px solid var(--c-space);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
}

.card--dark {
  background: var(--c-space);
  border-color: var(--c-space);
  color: rgba(245, 246, 248, 0.85);
  box-shadow: 6px 6px 0 var(--c-green);
}

.card--dark h1,
.card--dark h2,
.card--dark h3,
.card--dark h4 {
  color: var(--c-cream);
}

.card--dark a:not(.btn) {
  color: var(--c-green);
}

.card--dark a:not(.btn):hover {
  color: var(--c-gold);
}

.card--rock {
  background: var(--c-rock);
  border-color: var(--c-rock);
  color: rgba(245, 246, 248, 0.85);
}

.card--rock h1,
.card--rock h2,
.card--rock h3,
.card--rock h4 {
  color: var(--c-cream);
}

.card--rock a:not(.btn) {
  color: var(--c-green);
}

.card--rock a:not(.btn):hover {
  color: var(--c-gold);
}

.card--flush {
  padding: 0;
}

.card--pad-lg {
  padding: var(--sp-5);
}

/* 11. 标签与状态点 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid var(--c-space);
  border-radius: var(--radius-pill);
  font-family: var(--font-head);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--c-space);
  background: transparent;
}

.tag--green {
  background: rgba(168, 255, 0, 0.2);
  border-color: rgba(10, 31, 60, 0.4);
}

.tag--terra {
  background: rgba(184, 92, 60, 0.12);
  border-color: rgba(184, 92, 60, 0.5);
  color: var(--c-terra);
}

.tag--moss {
  background: rgba(75, 111, 68, 0.12);
  border-color: rgba(75, 111, 68, 0.5);
  color: var(--c-moss);
}

.tag--gold {
  background: rgba(212, 175, 55, 0.12);
  border-color: rgba(212, 175, 55, 0.6);
  color: var(--c-gold);
}

.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-space);
}

.status-dot::before {
  content: "";
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-rock);
}

.status-dot--live::before {
  background: var(--c-green);
  box-shadow: 0 0 0 4px rgba(168, 255, 0, 0.28);
}

.status-dot--pending::before {
  background: var(--c-terra);
}

.status-dot--done::before {
  background: var(--c-moss);
}

.status-dot--off::before {
  background: var(--c-rock);
}

/* 12. 统计数字与记录表 */
.stat {
  font-family: var(--font-data);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--c-space);
}

.stat__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgba(10, 31, 60, 0.5);
}

.section--dark .stat,
.card--dark .stat {
  color: var(--c-green);
}

.section--dark .stat__label,
.card--dark .stat__label {
  color: rgba(245, 246, 248, 0.5);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-data);
  font-size: 0.86rem;
  color: var(--c-ink);
  background: var(--c-cream);
}

.data-table th {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-cream);
  background: var(--c-space);
  border-bottom: 2px solid var(--c-green);
}

.data-table td {
  padding: 14px;
  border-bottom: 1px solid rgba(10, 31, 60, 0.12);
}

.data-table tbody tr {
  transition: background-color 0.18s ease;
}

.data-table tbody tr:hover {
  background: rgba(168, 255, 0, 0.08);
}

/* 13. 分段装饰 */
.divider {
  height: 4px;
  margin: var(--sp-5) 0;
  border: 0;
  background: linear-gradient(90deg, var(--c-gold) 0, var(--c-gold) 64px, rgba(212, 175, 55, 0.22) 64px, rgba(212, 175, 55, 0.22) 100%);
}

/* 14. 图片占位框 */
.image-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 220px;
  background-color: var(--c-rock);
  background-image:
    linear-gradient(rgba(245, 246, 248, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 246, 248, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  border: 2px solid var(--c-space);
  border-radius: 4px;
  overflow: hidden;
}

.image-frame::after {
  content: "IMG";
  font-family: var(--font-data);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.4em;
  text-indent: 0.4em;
  color: rgba(245, 246, 248, 0.35);
  z-index: 0;
}

.image-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-frame--4x3 {
  aspect-ratio: 4 / 3;
}

.image-frame--3x2 {
  aspect-ratio: 3 / 2;
}

.image-frame--wide {
  aspect-ratio: 16 / 5;
}

.image-frame--tall {
  aspect-ratio: 3 / 4;
}

.image-frame--large {
  min-height: 320px;
}

/* 15. 滚动显现 */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* 16. 页脚 */
.site-footer {
  position: relative;
  background: var(--c-space);
  color: rgba(245, 246, 248, 0.78);
  border-top: 4px solid var(--c-gold);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(168, 255, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 255, 0, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.site-footer::after {
  content: "PG";
  position: absolute;
  right: -20px;
  bottom: 84px;
  font-family: var(--font-data);
  font-size: clamp(5rem, 18vw, 13rem);
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(212, 175, 55, 0.12);
  pointer-events: none;
  user-select: none;
}

.site-footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr;
  gap: var(--sp-5);
  padding-block: var(--sp-5) var(--sp-4);
}

.footer-brand {
  padding-right: var(--sp-3);
}

.site-brand--footer {
  background: rgba(168, 255, 0, 0.04);
  border-color: rgba(212, 175, 55, 0.7);
  box-shadow: none;
}

.site-brand--footer:hover {
  border-color: var(--c-green);
  box-shadow: 0 0 0 3px rgba(168, 255, 0, 0.12);
}

.footer-brand__desc {
  max-width: 40ch;
  margin-top: var(--sp-3);
  font-family: var(--font-body);
  font-size: 0.93rem;
  line-height: 1.9;
  color: rgba(245, 246, 248, 0.62);
}

.footer-col__title {
  margin: 0 0 var(--sp-3);
  padding-bottom: 8px;
  font-family: var(--font-data);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-gold);
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
}

.footer-links__list {
  columns: 2;
  column-gap: var(--sp-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links__list li {
  margin-bottom: 10px;
  break-inside: avoid;
}

.footer-links__list a {
  position: relative;
  display: inline-block;
  padding-left: 15px;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(245, 246, 248, 0.78);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-links__list a::before {
  content: "›";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--c-green);
  opacity: 0.65;
  transition: transform 0.2s ease;
}

.footer-links__list a:hover {
  padding-left: 19px;
  color: var(--c-green);
  text-decoration: none;
}

.footer-links__list a:hover::before {
  transform: translateX(3px);
}

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

.footer-contact__item {
  display: grid;
  grid-template-columns: 3.5em 1fr;
  gap: 12px;
  padding: 10px 0;
  font-family: var(--font-data);
  border-bottom: 1px dashed rgba(245, 246, 248, 0.14);
}

.footer-contact__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--c-gold);
}

.footer-contact__value {
  font-size: 0.86rem;
  line-height: 1.6;
  color: rgba(245, 246, 248, 0.84);
  word-break: break-word;
}

.footer-bottom {
  position: relative;
  z-index: 1;
  padding-block: 18px;
  border-top: 1px solid rgba(168, 255, 0, 0.16);
  text-align: center;
}

.footer-icp {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: rgba(245, 246, 248, 0.5);
}

/* 17. 响应式：平板与手机 */
@media (max-width: 980px) {
  .site-header__inner {
    gap: var(--sp-2);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav-capsule {
    position: absolute;
    top: calc(100% + 10px);
    left: var(--sp-2);
    right: var(--sp-2);
    display: none;
    padding: 12px;
    border-radius: var(--radius-lg);
  }

  .site-nav-capsule[data-open] {
    display: block;
  }

  .site-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__link {
    padding: 13px 18px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    text-align: center;
    white-space: normal;
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-4);
    padding-block: var(--sp-4);
  }

  .footer-brand {
    grid-column: 1 / -1;
    padding-right: 0;
  }
}

@media (max-width: 640px) {
  :root {
    --sp-4: 28px;
    --sp-5: 48px;
  }

  .container {
    padding-inline: var(--sp-2);
  }

  .section-head {
    flex-wrap: wrap;
    gap: 8px 14px;
  }

  .section-head__note {
    display: none;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-links__list {
    columns: 1;
  }

  .card,
  .frame,
  .view-window__body {
    padding: var(--sp-3);
  }

  .btn {
    width: 100%;
  }
}

/* 18. 减弱动效 */
@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;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  [data-progress] {
    display: none;
  }
}