:root {
  --color-surface: #fafbfb;
  --color-surface-alt: #f1f2f2;
  --color-surface-deep: #e4e6e7;
  --color-ink: #434851;
  --color-ink-soft: #69707c;
  --color-ink-muted: #767d89;
  --color-line: #d9dbdc;
  --color-primary: #386ec7;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #dfe7f4;
  --color-accent: #1c1fe3;
  --color-accent-ink: #ffffff;
  --color-highlight: #d2d3f7;
  --color-focus: #0f13f0;
  --color-contrast-surface: #12161e;
  --color-contrast-ink: #e4e5e7;
  --color-contrast-line: #40444a;
  --color-contrast-accent: #7274ee;
  --overlay-scrim: linear-gradient(180deg, rgba(18, 22, 30, 0.35) 0%, rgba(18, 22, 30, 0.72) 55%, rgba(18, 22, 30, 0.92) 100%);
  --font-heading: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 10.7px;
  --text-sm: 13.4px;
  --text-base: 15px;
  --text-lg: 18.8px;
  --text-xl: 23.4px;
  --text-2xl: 29.3px;
  --text-3xl: 36.6px;
  --text-4xl: 45.8px;
  --text-display: clamp(38px, 7.9vw, 101px);
  --text-figure: clamp(32px, 5.7vw, 73px);
  --weight-heading: 710;
  --weight-body: 400;
  --leading-body: 1.73;
  --leading-heading: 1.26;
  --tracking-heading: 0.004em;
  --radius-sm: 1px;
  --radius-md: 2px;
  --radius-lg: 2px;
  --radius-pill: 2px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: none;
  --shadow-2: none;
  --space-1: 7px;
  --space-2: 14px;
  --space-3: 21px;
  --space-4: 28px;
  --space-6: 42px;
  --space-8: 56px;
  --container: 1280px;
  --measure: 74ch;
  --gutter: 28px;
  --section-y: 72px;
  --section-y-lg: 101px;
}

/* ============================================================
   1号娱乐主站 · /assets/site.css
   工程蓝图气质：冷蓝网格底、坐标刻度、等宽标注、直角细线
   ============================================================ */

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

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

body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  font-weight: var(--weight-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 蓝图点线网格底 —— 全站结构底纹 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at center,
      color-mix(in srgb, var(--color-line) 92%, transparent) 0.9px,
      transparent 1.4px),
    linear-gradient(to right,
      color-mix(in srgb, var(--color-line) 34%, transparent) var(--border-thin),
      transparent var(--border-thin));
  background-size: 28px 28px, 28px 28px;
  opacity: 0.6;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

/* ---------- 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
h5 { font-size: var(--text-base); }
h6 { font-size: var(--text-sm); }

p { margin: 0 0 var(--space-3); }

ul, ol {
  margin: 0 0 var(--space-3);
  padding-left: var(--space-4);
}

li { margin: 0; }

a {
  color: var(--color-primary);
  text-decoration: none;
  text-underline-offset: 3px;
  transition: color 140ms linear;
}

a:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-style: dotted;
}

strong, b { font-weight: var(--weight-heading); }

code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
}

hr {
  border: 0;
  border-top: var(--border-thin) dotted var(--color-line);
  margin: var(--space-6) 0;
}

::selection {
  background: var(--color-highlight);
  color: var(--color-ink);
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---------- 层级：内容压在网格底纹之上 ---------- */
.site-header,
.site-footer,
main {
  position: relative;
  z-index: 1;
}

/* ---------- 布局工具 ---------- */
.wrap {
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-4);
}

.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-5  { grid-column: span 5; }
.col-6  { grid-column: span 6; }
.col-7  { grid-column: span 7; }
.col-8  { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.prose {
  max-width: var(--measure);
}

.prose h2,
.prose h3 {
  margin-top: var(--space-6);
}

.prose h2:first-child,
.prose h3:first-child {
  margin-top: 0;
}

/* ---------- 标注与结构语言 ---------- */
.mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
}

.coord {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.rule-dot {
  border: 0;
  border-top: var(--border-thin) dotted var(--color-line);
  margin: var(--space-6) 0;
}

.sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: end;
  gap: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-line);
  margin-bottom: var(--space-4);
}

.sec-head__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding-bottom: 5px;
}

.sec-head__title {
  margin: 0;
  font-size: var(--text-xl);
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.sec-head__note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
  text-align: right;
  padding-bottom: 5px;
}

/* ---------- 面板 ---------- */
.panel {
  position: relative;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
}

.panel__bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-deep);
  border-bottom: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-soft);
}

.panel__num {
  color: var(--color-primary);
}

.panel__title {
  color: var(--color-ink);
  letter-spacing: 0.12em;
}

.panel__body {
  padding: var(--space-3);
}

.panel--dark {
  background: var(--color-contrast-surface);
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.panel--dark .panel__bar {
  background: color-mix(in srgb, var(--color-contrast-surface) 86%, var(--color-contrast-ink) 14%);
  border-bottom-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.panel--dark .panel__num {
  color: var(--color-contrast-accent);
}

.panel--dark .panel__title {
  color: var(--color-contrast-ink);
}

.panel--dark a {
  color: var(--color-contrast-accent);
}

.panel--dark a:hover {
  color: var(--color-contrast-ink);
}

/* ---------- 标签与状态 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px var(--space-1);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.4;
}

.tag--accent {
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.status-dot {
  display: inline-block;
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-ink-muted);
}

.status-dot[data-state="on"] {
  background: var(--color-accent);
  animation: dot-pulse 2.4s ease-in-out infinite;
}

@keyframes dot-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.42; transform: scale(0.78); }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 10px var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 160ms linear, color 160ms linear, border-color 160ms linear;
}

.btn:hover {
  background: var(--color-highlight);
  border-color: var(--color-primary);
  color: var(--color-ink);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn--primary:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn--ghost {
  background: transparent;
}

.btn__idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  opacity: 0.85;
}

.copy-btn {
  padding: 2px 7px;
  border: var(--border-thin) dotted currentColor;
  border-radius: var(--radius-sm);
  background: transparent;
  color: inherit;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  line-height: 1.6;
  cursor: pointer;
  transition: background-color 160ms linear, color 160ms linear;
}

.copy-btn:hover {
  background: var(--color-highlight);
  color: var(--color-ink);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-4);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-line);
}

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

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

/* ---------- 字段对照 ---------- */
.kv {
  list-style: none;
  margin: 0;
  padding: 0;
}

.kv__row {
  display: grid;
  grid-template-columns: minmax(80px, auto) minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.kv__row:last-child {
  border-bottom: 0;
}

.kv__key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.kv__val {
  font-size: var(--text-sm);
  color: var(--color-ink);
}

/* ---------- 折叠面板 ---------- */
.fold {
  margin: 0 0 var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
}

.fold__sum {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  list-style: none;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink);
}

.fold__sum::-webkit-details-marker { display: none; }

.fold__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

.fold[open] .fold__sum::after {
  content: "–";
  color: var(--color-accent);
}

.fold[open] .fold__sum {
  background: var(--color-surface-alt);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.fold__body {
  padding: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ---------- 图片容器（页面阶段放置占位） ---------- */
.frame {
  position: relative;
  display: block;
  overflow: hidden;
  margin: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-deep);
}

.frame > img,
.frame > picture,
.frame > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.frame--dark {
  background: var(--color-contrast-surface);
  border-color: var(--color-contrast-line);
}

.frame__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: var(--overlay-scrim);
}

.frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: var(--space-3);
  background: var(--overlay-scrim);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
}

.frame__tag {
  position: absolute;
  left: var(--space-2);
  top: var(--space-2);
  z-index: 2;
  padding: 3px 7px;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-contrast-surface) 84%, transparent);
  color: var(--color-contrast-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
}

.ratio-21-9 { aspect-ratio: 21 / 9; }
.ratio-16-9 { aspect-ratio: 16 / 9; }
.ratio-4-3  { aspect-ratio: 4 / 3; }
.ratio-1-1  { aspect-ratio: 1 / 1; }

/* ============================================================
   页头
   ============================================================ */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -120px;
  z-index: 120;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  transition: top 140ms linear;
}

.skip-link:focus {
  top: var(--space-2);
  color: var(--color-contrast-ink);
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: transparent;
  border-bottom: var(--border-thin) solid transparent;
  transition: background-color 200ms linear, border-color 200ms linear;
}

.site-header[data-stuck],
.site-header[data-open] {
  background: var(--color-surface);
  border-bottom-color: var(--color-line);
}

.site-header__inner {
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
  min-height: 70px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-6);
}

/* 顶部坐标刻度轨道 */
.site-header__rail {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--border-thin);
  pointer-events: none;
  opacity: 0.4;
  background-image: repeating-linear-gradient(
    to right,
    var(--color-primary) 0 14px,
    transparent 14px 28px
  );
  transition: opacity 200ms linear;
}

.site-header[data-stuck] .site-header__rail {
  opacity: 0;
}

/* 滚动进度 */
.site-progress {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 3;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 90ms linear;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-ink);
  text-decoration: none;
}

.brand:hover,
.brand:focus {
  color: var(--color-ink);
  text-decoration: none;
}

.brand__mark {
  flex: none;
  padding: 5px 7px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  line-height: 1;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
  line-height: 1.15;
}

.brand__line {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
  line-height: 1.4;
}

/* 导航 */
.site-nav {
  justify-self: center;
  z-index: 5;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: var(--space-1) 2px;
  border-bottom: var(--border-thin) solid transparent;
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  white-space: nowrap;
  text-decoration: none;
  transition: color 140ms linear, border-color 140ms linear;
}

.site-nav__link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.nav-idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.site-nav__link[aria-current="page"] .nav-idx {
  color: var(--color-accent);
}

/* 页头右侧 */
.site-header__tools {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  justify-self: end;
}

.account-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 7px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 78%, transparent);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-decoration: none;
  transition: background-color 160ms linear, border-color 160ms linear, color 160ms linear;
}

.account-link:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

.account-link__label {
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  padding: 7px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  cursor: pointer;
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 14px;
}

.nav-toggle__bars span {
  display: block;
  height: var(--border-thin);
  background: currentColor;
}

.nav-toggle[aria-expanded="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  margin-top: var(--section-y-lg);
  padding: var(--space-8) 0 var(--space-6);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-4);
  align-items: start;
}

.footer-panel {
  grid-column: span 4;
}

.footer-panel .panel__body {
  padding: var(--space-3) var(--space-3) var(--space-4);
}

.footer-copy {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

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

.footer-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) dotted var(--color-contrast-line);
  font-size: var(--text-sm);
}

.footer-list li:last-child {
  border-bottom: 0;
}

.footer-key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.footer-val {
  color: var(--color-contrast-ink);
  text-align: right;
}

.contact-line {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) dotted var(--color-contrast-line);
  font-size: var(--text-sm);
}

.contact-line:last-child {
  border-bottom: 0;
}

.contact-line__key {
  flex: none;
  min-width: 38px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.contact-line__val {
  color: var(--color-contrast-ink);
  word-break: break-all;
}

.contact-line .copy-btn {
  margin-left: auto;
  color: var(--color-contrast-ink);
  flex: none;
}

.contact-line .copy-btn:hover {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

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

.policy-links li {
  border-bottom: var(--border-thin) dotted var(--color-contrast-line);
}

.policy-links li:last-child {
  border-bottom: 0;
}

.policy-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-decoration: none;
}

.policy-links a::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--color-contrast-accent);
}

.policy-links a:hover {
  color: var(--color-contrast-accent);
  text-decoration: none;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) dotted var(--color-contrast-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.footer-base p {
  margin: 0;
}

/* ---------- 进入视口淡入 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 320ms ease-out, transform 320ms ease-out;
}

.has-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .site-nav__list { gap: var(--space-2); }
  .site-header__inner { gap: var(--space-3); }

  .col-3,
  .col-4 { grid-column: span 6; }

  .col-5,
  .col-7 { grid-column: span 12; }

  .footer-panel { grid-column: span 6; }
}

@media (max-width: 980px) {
  .site-header__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-2);
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    justify-self: stretch;
    display: none;
    padding: var(--space-2) var(--space-4) var(--space-4);
    background: var(--color-surface);
    border-bottom: var(--border-thin) solid var(--color-line);
  }

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

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

  .site-nav__link {
    width: 100%;
    padding: var(--space-3) 0;
    border-bottom: var(--border-thin) dotted var(--color-line);
    border-top: 0;
    border-left: 0;
    border-right: 0;
    font-size: var(--text-base);
  }

  .site-nav__link[aria-current="page"] {
    border-bottom-color: var(--color-line);
    border-left: 2px solid var(--color-accent);
    padding-left: var(--space-2);
  }

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

@media (max-width: 760px) {
  .wrap,
  .site-header__inner {
    width: min(100% - var(--space-3) * 2, var(--container));
  }

  .grid { gap: var(--space-3); }

  .col-3,
  .col-4,
  .col-6,
  .col-8 { grid-column: span 12; }

  .sec-head {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .sec-head__note {
    grid-column: 1 / -1;
    text-align: left;
  }

  .site-footer {
    padding-top: var(--space-6);
  }

  .footer-grid { gap: var(--space-3); }
}

@media (max-width: 560px) {
  .brand__line { display: none; }
  .account-link__label { display: none; }
  .account-link { padding: 7px var(--space-1); }
  .nav-toggle__text { display: none; }
  .footer-panel { grid-column: span 12; }
  .footer-base { letter-spacing: 0.1em; }
}

/* ============================================================
   降低动效
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .has-js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .status-dot[data-state="on"] {
    opacity: 1;
    transform: none;
  }
}