/* ==========================================================================
   355娱乐掌上 · /assets/site.css
   共享外壳：reset / tokens / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================================== */

/* ---------- 1. reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--void);
  color: var(--ice);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; }
img, svg, video, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; border-spacing: 0; }
[hidden] { display: none !important; }

::selection {
  background: rgba(53, 230, 255, .28);
  color: var(--ice);
}

/* ---------- 2. tokens ---------- */
:root {
  --void: #050912;
  --deep: #0A1226;
  --slab: #121C38;
  --hairline: #2A3A5E;
  --hairline-soft: rgba(42, 58, 94, .55);

  --cyan: #35E6FF;
  --magenta: #FF3DAE;
  --lime: #C9FF45;
  --ice: #E8F1FF;
  --mist: #8FA3C4;
  --amber: #FFB259;
  --violet: #6E5BFF;

  --shell: 1280px;
  --gutter: clamp(18px, 4.2vw, 56px);
  --gap: clamp(16px, 2.2vw, 28px);
  --topbar-h: 74px;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-wide: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --ease: cubic-bezier(.4, .2, .2, 1);
}

/* ---------- 3. 背景层：深空 + 舱壁网格 + 三处辉光 ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(900px 620px at 10% -6%, rgba(53, 230, 255, .10), transparent 62%),
    radial-gradient(820px 680px at 102% 6%, rgba(110, 91, 255, .13), transparent 64%),
    radial-gradient(760px 540px at 72% 104%, rgba(255, 61, 174, .08), transparent 66%),
    var(--void);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .45;
  background-image:
    linear-gradient(rgba(42, 58, 94, .34) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 58, 94, .34) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(circle at 50% 18%, rgba(0, 0, 0, .75), transparent 76%);
  mask-image: radial-gradient(circle at 50% 18%, rgba(0, 0, 0, .75), transparent 76%);
}

/* ---------- 4. 中文排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-wide);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: .05em;
  color: var(--ice);
}

h1 { font-size: clamp(32px, 5.6vw, 68px); line-height: 1.1; letter-spacing: .06em; }
h2 { font-size: clamp(24px, 3.2vw, 34px); }
h3 { font-size: clamp(18px, 2.1vw, 22px); }
h4 { font-size: 17px; letter-spacing: .07em; }

p { line-height: 1.78; }

a { text-decoration: none; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mist);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.page-head {
  padding-top: calc(var(--topbar-h) + clamp(24px, 4.5vw, 64px));
  padding-bottom: clamp(18px, 3vw, 40px);
}

.page-title {
  margin: 0 0 14px;
  font-family: var(--font-wide);
  font-weight: 400;
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.12;
  letter-spacing: .05em;
  color: var(--ice);
}

/* ---------- 5. 布局骨架 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.shell--narrow { max-width: 920px; }

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

.grid__main  { grid-column: 1 / span 7; }
.grid__aside { grid-column: 9 / span 3; }
.grid__rail  { grid-column: 11 / span 2; }
.grid__full  { grid-column: 1 / -1; }

.section { padding: clamp(48px, 7vw, 110px) 0; }
.section--tight { padding: clamp(28px, 4vw, 56px) 0; }

.prose {
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(232, 241, 255, .86);
}

.prose p { margin: 0 0 1.15em; }
.prose h2 { margin: 1.8em 0 .7em; font-size: clamp(22px, 2.6vw, 28px); }
.prose h3 { margin: 1.6em 0 .6em; }
.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 1.2em; }
.prose li { margin-bottom: .5em; }
.prose li::marker { color: var(--cyan); }
.prose strong { color: var(--ice); font-weight: 600; }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(53, 230, 255, .4); }
.prose a:hover { border-bottom-color: var(--cyan); }
.prose code {
  font-family: var(--font-mono);
  font-size: .92em;
  color: var(--lime);
  background: rgba(18, 28, 56, .8);
  border: 1px solid var(--hairline-soft);
  padding: 1px 6px;
}

/* ---------- 6. skip link ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 18px;
  z-index: 200;
  padding: 10px 20px;
  background: var(--cyan);
  color: var(--void);
  font-size: 13px;
  letter-spacing: .1em;
  transition: top .22s var(--ease);
}

.skip-link:focus { top: 16px; }

/* ---------- 7. 头部 ---------- */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s var(--ease);
}

.topbar.is-solid {
  background: rgba(5, 9, 18, .86);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--hairline);
}

.topbar__rail {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 95;
  background: rgba(42, 58, 94, .42);
  pointer-events: none;
}

.topbar__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 52%, var(--magenta));
}

.topbar__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.6vw, 40px);
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: var(--topbar-h);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  margin-left: auto;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--ice);
}

.brand--stack { flex-direction: row; align-items: center; margin-bottom: 18px; }

.brand__mark {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
}

.brand__mark svg { width: 100%; height: 100%; }

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.2;
}

.brand__name {
  font-family: var(--font-wide);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .09em;
  color: var(--ice);
}

.brand__meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--mist);
}

/* 状态胶囊 */
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: rgba(18, 28, 56, .5);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
  white-space: nowrap;
}

.status-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 9px rgba(201, 255, 69, .9);
  animation: chipPulse 2.6s ease-in-out infinite;
}

@keyframes chipPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

/* 导航 */
.nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  flex: 1 1 auto;
  min-width: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.5vw, 22px);
  list-style: none;
}

.nav__item { position: relative; }

.nav__link {
  position: relative;
  display: inline-block;
  padding: 9px 2px;
  font-size: 14.5px;
  letter-spacing: .07em;
  color: var(--mist);
  transition: color .25s var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .3s var(--ease);
}

.nav__link:hover { color: var(--ice); }
.nav__link:hover::after { transform: scaleX(1); }

.nav__link[aria-current="page"] { color: var(--cyan); }
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

.nav__note {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
  opacity: .7;
  white-space: nowrap;
}

/* 折叠按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 13px;
  border: 1px solid var(--hairline);
  background: rgba(10, 18, 38, .75);
  color: var(--ice);
  font-size: 13px;
  letter-spacing: .1em;
  cursor: pointer;
  transition: border-color .25s var(--ease);
}

.nav-toggle:hover { border-color: var(--cyan); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--cyan);
  transition: transform .3s var(--ease);
}

.topbar[data-open] .nav-toggle__bars span:first-child { transform: translateY(3.25px) rotate(45deg); }
.topbar[data-open] .nav-toggle__bars span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: rgba(10, 18, 38, .4);
  color: var(--ice);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .1em;
  cursor: pointer;
  transition: border-color .25s var(--ease), color .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
}

.btn--cyan {
  background: linear-gradient(120deg, rgba(53, 230, 255, .18), rgba(110, 91, 255, .18));
  border-color: rgba(53, 230, 255, .5);
}

.btn--cyan:hover {
  border-color: var(--cyan);
  color: #ffffff;
  box-shadow: 0 0 0 1px rgba(53, 230, 255, .3), 0 14px 34px -22px rgba(53, 230, 255, .9);
}

.btn--ghost { background: transparent; color: var(--mist); }
.btn--ghost:hover { color: var(--ice); border-color: var(--cyan); }

.btn--sm { padding: 8px 15px; font-size: 13px; letter-spacing: .08em; }

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs { margin: 0 0 10px; }

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--mist);
}

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

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin: 0 10px;
  color: var(--hairline);
}

.breadcrumbs__link { color: var(--mist); transition: color .2s var(--ease); }
.breadcrumbs__link:hover { color: var(--cyan); }
.breadcrumbs__item[aria-current="page"] { color: var(--ice); }

/* ---------- 10. 面板 · 标签 · 指标 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: linear-gradient(160deg, rgba(18, 28, 56, .72), rgba(10, 18, 38, .92));
}

.panel--float {
  background: linear-gradient(160deg, rgba(20, 32, 64, .88), rgba(10, 18, 38, .94));
  box-shadow: 0 26px 70px -44px rgba(53, 230, 255, .75), inset 0 1px 0 rgba(232, 241, 255, .05);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.panel--float:hover {
  border-color: rgba(53, 230, 255, .55);
  box-shadow: 0 30px 80px -44px rgba(53, 230, 255, .95), inset 0 1px 0 rgba(232, 241, 255, .07);
}

.panel__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--hairline-soft);
}

.panel__title {
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--ice);
}

.panel__body { color: rgba(232, 241, 255, .82); font-size: 16px; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: rgba(18, 28, 56, .6);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
  white-space: nowrap;
}

.tag--cyan { color: var(--cyan); border-color: rgba(53, 230, 255, .42); }
.tag--magenta { color: var(--magenta); border-color: rgba(255, 61, 174, .42); }
.tag--lime { color: var(--lime); border-color: rgba(201, 255, 69, .42); }
.tag--amber { color: var(--amber); border-color: rgba(255, 178, 89, .42); }

.stat { display: flex; flex-direction: column; gap: 8px; }

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--lime);
}

.stat__unit {
  margin-left: .28em;
  font-size: .46em;
  letter-spacing: .12em;
  color: var(--mist);
}

.stat__label {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist);
}

.delta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--amber);
}

.delta--flat { color: var(--mist); }

/* 横向报数带 */
.band {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: linear-gradient(90deg, rgba(53, 230, 255, .07), rgba(110, 91, 255, .08) 44%, rgba(255, 61, 174, .07));
}

/* ---------- 11. 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: linear-gradient(140deg, rgba(53, 230, 255, .10), rgba(110, 91, 255, .10) 52%, rgba(255, 61, 174, .09));
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .35;
  background-image:
    linear-gradient(rgba(42, 58, 94, .5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 58, 94, .5) 1px, transparent 1px);
  background-size: 32px 32px;
}

.media-frame > img,
.media-frame > svg,
.media-frame > picture {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3  { aspect-ratio: 4 / 3; }
.media-frame--1x1  { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 12px 14px;
  background: linear-gradient(0deg, rgba(5, 9, 18, .92), transparent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

/* ---------- 12. 对照表格 ---------- */
.data-table {
  width: 100%;
  font-size: 15px;
  color: rgba(232, 241, 255, .9);
}

.data-table caption {
  caption-side: top;
  padding-bottom: 12px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mist);
}

.data-table th {
  padding: 10px 14px;
  text-align: left;
  font-weight: 500;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--mist);
  border-bottom: 1px solid var(--hairline);
  white-space: nowrap;
}

.data-table td {
  padding: 15px 14px;
  border-bottom: 1px solid var(--hairline-soft);
  vertical-align: middle;
}

.data-table tbody tr { transition: background .2s var(--ease); }
.data-table tbody tr:hover { background: var(--slab); }

.data-table__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.data-table__delta {
  display: inline-block;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity .25s var(--ease), transform .25s var(--ease);
}

.data-table tbody tr:hover .data-table__delta {
  opacity: 1;
  transform: translateX(0);
}

/* ---------- 13. 标签页 / 筛选 ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 20px;
}

.tab,
.filter-chip {
  appearance: none;
  padding: 8px 15px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: rgba(10, 18, 38, .6);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  cursor: pointer;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.tab:hover,
.filter-chip:hover {
  color: var(--ice);
  border-color: rgba(53, 230, 255, .45);
}

.tab[aria-selected="true"] {
  color: var(--void);
  border-color: transparent;
  background: linear-gradient(120deg, var(--cyan), #7BE9FF);
}

.filter-chip[aria-pressed="true"] {
  color: var(--void);
  border-color: transparent;
  background: linear-gradient(120deg, var(--lime), #E4FF9C);
}

.tab-panel { margin-top: 4px; }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
}

/* ---------- 14. 手风琴 ---------- */
.accordion { border-top: 1px solid var(--hairline); }

.accordion__item { border-bottom: 1px solid var(--hairline); }

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  padding: 18px 2px;
  border: 0;
  background: none;
  color: var(--ice);
  font-family: var(--font-sans);
  font-size: 16px;
  letter-spacing: .04em;
  text-align: left;
  cursor: pointer;
  transition: color .25s var(--ease);
}

.accordion__trigger:hover { color: var(--cyan); }

.accordion__icon {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
}

.accordion__icon::before { width: 14px; height: 1.5px; transform: translate(-50%, -50%); }
.accordion__icon::after { width: 1.5px; height: 14px; transform: translate(-50%, -50%); transition: transform .3s var(--ease); }

.accordion__item[data-open] .accordion__icon::after { transform: translate(-50%, -50%) scaleY(0); }

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .32s var(--ease);
}

.accordion__item[data-open] .accordion__panel { grid-template-rows: 1fr; }

.accordion__inner { overflow: hidden; }

.accordion__content {
  max-width: 70ch;
  padding: 0 2px 22px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(232, 241, 255, .8);
}

/* ---------- 15. 进场显现 ---------- */
.reveal { transition: opacity .55s var(--ease), transform .55s var(--ease); }

html.js-ready .reveal:not(.is-in) {
  opacity: 0;
  transform: translateY(12px);
}

html.js-ready .reveal.is-in { opacity: 1; transform: none; }

/* ---------- 16. 页脚 ---------- */
.footer {
  position: relative;
  margin-top: clamp(64px, 10vw, 140px);
  padding: clamp(42px, 6vw, 76px) 0 28px;
  border-top: 1px solid var(--hairline);
  background: linear-gradient(180deg, rgba(10, 18, 38, .55), rgba(5, 9, 18, .96));
}

.footer__inner {
  display: grid;
  grid-template-columns: minmax(260px, 1.15fr) minmax(0, 1.6fr);
  gap: clamp(28px, 4vw, 64px);
}

.footer__line {
  max-width: 34ch;
  margin-bottom: 20px;
  font-size: 14px;
  letter-spacing: .03em;
  color: var(--mist);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.copy-mail {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: rgba(10, 18, 38, .7);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--ice);
  cursor: pointer;
  transition: border-color .25s var(--ease);
}

.copy-mail:hover { border-color: var(--cyan); }

.copy-mail__key {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
}

.copy-mail__hint {
  padding: 2px 9px;
  border: 1px solid rgba(53, 230, 255, .42);
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.copy-mail.is-done .copy-mail__hint {
  color: var(--lime);
  border-color: rgba(201, 255, 69, .55);
}

.footer__tel {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
  transition: color .25s var(--ease);
}

.footer__tel:hover { color: var(--cyan); }

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 2.6vw, 40px);
}

.footer__col-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .22em;
  color: var(--cyan);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 11px;
  list-style: none;
}

.footer__link {
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--mist);
  transition: color .25s var(--ease);
}

.footer__link:hover { color: var(--ice); }

.footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 28px;
  margin-top: clamp(34px, 4vw, 58px);
  padding-top: 20px;
  border-top: 1px solid var(--hairline-soft);
}

.footer__legal,
.footer__note,
.footer__year {
  margin: 0;
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--mist);
}

.footer__note { max-width: 52ch; color: rgba(143, 163, 196, .84); }

.footer__year { font-family: var(--font-mono); }

/* 返回顶部 */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 34px);
  bottom: clamp(14px, 3vw, 34px);
  z-index: 70;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: rgba(10, 18, 38, .92);
  color: var(--cyan);
  font-size: 16px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s var(--ease), border-color .25s var(--ease);
}

.to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--cyan); }

/* ---------- 17. 焦点可见 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1180px) {
  .nav__note { display: none; }
  .status-chip { display: none; }
}

@media (max-width: 1024px) {
  .grid__main,
  .grid__aside,
  .grid__rail { grid-column: 1 / -1; }

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

@media (max-width: 960px) {
  :root { --topbar-h: 64px; }

  html { scroll-padding-top: 24px; }

  .topbar {
    top: auto;
    bottom: 0;
    border-top: 1px solid var(--hairline);
    border-bottom: 0;
    background: rgba(5, 9, 18, .94);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
  }

  .topbar__inner { gap: 12px; }

  .brand__meta { display: none; }

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

  .nav {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 72vh;
    overflow: auto;
    padding: 16px var(--gutter) 22px;
    border-top: 1px solid var(--hairline);
    background: rgba(8, 14, 30, .98);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transform: translateY(10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform .3s var(--ease), opacity .3s var(--ease), visibility .3s var(--ease);
  }

  .topbar[data-open] .nav {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .nav__item { border-bottom: 1px solid var(--hairline-soft); }

  .nav__link {
    display: block;
    padding: 15px 2px;
    font-size: 16px;
    letter-spacing: .09em;
  }

  .nav__link::after { display: none; }

  .nav__link[aria-current="page"]::before {
    content: "";
    display: inline-block;
    width: 16px;
    height: 1px;
    margin-right: 10px;
    vertical-align: middle;
    background: var(--cyan);
  }

  .nav__note {
    display: block;
    margin: 16px 0 0;
    white-space: normal;
  }

  .footer { padding-bottom: calc(var(--topbar-h) + 44px); }

  .to-top { bottom: calc(var(--topbar-h) + 18px); }

  .page-head { padding-top: clamp(28px, 6vw, 52px); }

  .footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
}

@media (max-width: 620px) {
  .topbar__actions .btn--sm { display: none; }

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

  .copy-mail { flex-wrap: wrap; row-gap: 6px; }

  .data-table { font-size: 14px; }
  .data-table th, .data-table td { padding: 11px 9px; }

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

/* ---------- 19. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  html.js-ready .reveal:not(.is-in),
  html.js-ready .reveal.is-in {
    opacity: 1;
    transform: none;
  }

  .to-top { transition: none; }
}