/* ==========================================================================
   电子游戏888 · PLAY888 DATA DECK — 共享 Site Kit 样式
   /assets/site.css
   ========================================================================== */

/* 1 · Reset ---------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, figcaption, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

button { font: inherit; color: inherit; }

/* 2 · Tokens --------------------------------------------------------------- */
:root {
  --bg: #07060F;
  --panel: #0F0B1E;
  --float: #171232;

  --cyan: #00E5FF;
  --magenta: #FF2FB4;
  --lime: #B4FF39;
  --violet: #8C7BFF;
  --fault: #FF3D6E;

  --ink: #E8E6F5;
  --ink-dim: #9A94B8;
  --line: #2A2350;

  --bar-h: 64px;
  --rail-w: 88px;
  --skew: -3.5deg;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-panel: "Archivo", "Archivo Expanded", "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shadow-hard: 6px 6px 0 rgba(23, 18, 50, 0.9);
  --shadow-cyan: 8px 8px 0 rgba(0, 229, 255, 0.22);
}

/* 3 · Base ---------------------------------------------------------------- */
body {
  min-height: 100vh;
  padding-top: var(--bar-h);
  background-color: var(--bg);
  background-image:
    radial-gradient(1100px 620px at 84% -12%, rgba(140, 123, 255, 0.14), transparent 62%),
    radial-gradient(820px 520px at -8% 108%, rgba(255, 47, 180, 0.12), transparent 62%);
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

/* 页面边缘故障细线 */
body::before,
body::after {
  content: "";
  position: fixed;
  top: 0;
  bottom: 0;
  width: 1px;
  z-index: 70;
  pointer-events: none;
}

body::before {
  left: 0;
  background: linear-gradient(180deg, var(--cyan), transparent 38%, var(--magenta));
  opacity: 0.4;
}

body::after {
  right: 0;
  background: linear-gradient(180deg, transparent, var(--fault) 16%, var(--cyan) 52%, var(--magenta) 82%, transparent);
  opacity: 0.55;
}

h1, h2 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.18;
}

h1 { font-size: clamp(30px, 6vw, 46px); }
h2 { font-size: clamp(24px, 4vw, 34px); }

h3, h4 {
  font-family: var(--font-panel);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.35;
}

h3 { font-size: 18px; }
h4 { font-size: 15px; }

p { color: var(--ink); }

a { color: var(--cyan); }

::selection {
  background: var(--cyan);
  color: var(--bg);
}

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

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* 4 · Skip link ----------------------------------------------------------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  transform: translateY(-180%);
  padding: 10px 14px;
  background: var(--lime);
  color: var(--bg);
  border: 2px solid var(--bg);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* 5 · Header / 侧轨 ------------------------------------------------------- */
.deck-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 12px;
  height: var(--bar-h);
  padding: 0 14px;
  background: linear-gradient(180deg, #0F0B1E 0%, #0A0716 100%);
  border-bottom: 2px solid var(--line);
  color: var(--ink);
}

.deck-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  color: var(--ink);
  text-decoration: none;
}

.brand-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  padding: 5px 8px;
  background: rgba(0, 229, 255, 0.08);
  border: 2px solid var(--cyan);
  box-shadow: 3px 3px 0 rgba(0, 229, 255, 0.2);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-chip-dot {
  display: block;
  width: 6px;
  height: 6px;
  background: var(--lime);
  box-shadow: 0 0 8px var(--lime);
}

.brand-words {
  display: block;
  min-width: 0;
}

.brand-name {
  display: block;
  font-family: var(--font-panel);
  font-weight: 800;
  font-size: 15px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  white-space: nowrap;
}

.brand-tag {
  display: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 8px 10px;
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: 3px 3px 0 rgba(255, 47, 180, 0.22);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: border-color 0.1s linear, color 0.1s linear;
}

.nav-toggle:hover {
  border-color: var(--magenta);
  color: #FFFFFF;
}

.nav-toggle-glyph {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle-glyph span {
  display: block;
  height: 2px;
  background: var(--cyan);
  transition: transform 0.12s linear, opacity 0.12s linear;
}

.nav-toggle-glyph span:nth-child(2) { width: 70%; }

.deck-header[data-open] .nav-toggle-glyph span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.deck-header[data-open] .nav-toggle-glyph span:nth-child(2) { opacity: 0; }

.deck-header[data-open] .nav-toggle-glyph span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* 移动端抽屉 */
.deck-header::after {
  content: "";
  position: fixed;
  inset: var(--bar-h) 0 0 0;
  z-index: 80;
  background: rgba(7, 6, 15, 0.74);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.16s linear, visibility 0.16s;
  pointer-events: none;
}

.deck-header[data-open]::after {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.deck-nav {
  position: fixed;
  top: var(--bar-h);
  left: 0;
  bottom: 0;
  z-index: 81;
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: min(84vw, 320px);
  padding: 20px 16px 28px;
  background: linear-gradient(165deg, #130D27 0%, #07060F 72%);
  border-right: 2px solid var(--line);
  transform: translateX(-102%);
  visibility: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  transition: transform 0.18s linear, visibility 0.18s;
}

.deck-header[data-open] .deck-nav {
  transform: translateX(0);
  visibility: visible;
}

.rail-note {
  padding-left: 9px;
  border-left: 2px solid var(--magenta);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-item { display: block; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border: 2px solid transparent;
  border-left: 2px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-panel);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.1s linear, background 0.1s linear, transform 0.1s linear, color 0.1s linear;
}

.nav-index {
  flex: 0 0 auto;
  width: 20px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
}

.nav-label { display: inline-block; }

.nav-link:hover,
.nav-link:focus-visible {
  border-color: var(--line);
  border-left-color: var(--cyan);
  background: var(--float);
  color: #FFFFFF;
  transform: translateX(2px);
}

.nav-link[aria-current="page"] {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.16), transparent 72%);
  color: var(--cyan);
}

.nav-link[aria-current="page"] .nav-index { color: var(--lime); }

.rail-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
  padding: 12px 14px;
  background: var(--cyan);
  border: 2px solid var(--cyan);
  box-shadow: 5px 5px 0 rgba(255, 47, 180, 0.42);
  color: var(--bg);
  font-family: var(--font-panel);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  transition: background 0.1s linear, border-color 0.1s linear, box-shadow 0.1s linear, transform 0.1s linear;
}

.rail-cta:hover,
.rail-cta:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: 5px 5px 0 rgba(0, 229, 255, 0.5);
  transform: translate(-1px, -1px);
}

.rail-cta-text { display: inline-block; }

.rail-cta-arrow {
  flex: 0 0 auto;
  font-family: var(--font-mono);
}

/* 阅读进度条 */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 95;
  height: 3px;
  background: rgba(42, 35, 80, 0.6);
  pointer-events: none;
}

.scroll-meter-bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--lime) 55%, var(--magenta));
}

/* 6 · Footer -------------------------------------------------------------- */
.site-footer {
  position: relative;
  margin-top: 56px;
  padding: 36px 0 24px;
  background: linear-gradient(180deg, #0B0818 0%, #07060F 64%);
  border-top: 2px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta) 42%, transparent 78%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.footer-col { min-width: 0; }

.footer-brand {
  font-family: var(--font-panel);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.footer-text {
  margin-top: 8px;
  max-width: 30ch;
  font-size: 13px;
  color: var(--ink-dim);
}

.footer-note {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

.footer-head {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.footer-head::before {
  content: "";
  display: block;
  width: 14px;
  height: 2px;
  background: var(--magenta);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-link {
  position: relative;
  display: inline-block;
  padding: 3px 0;
  color: var(--ink-dim);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.1s linear;
}

.footer-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width 0.12s linear;
}

.footer-link:hover,
.footer-link:focus-visible { color: var(--cyan); }

.footer-link:hover::after,
.footer-link:focus-visible::after { width: 100%; }

.footer-link--cta {
  margin-top: 12px;
  padding: 8px 12px;
  background: transparent;
  border: 2px solid var(--violet);
  color: var(--cyan);
  font-family: var(--font-panel);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.06em;
  box-shadow: 4px 4px 0 rgba(140, 123, 255, 0.22);
  transition: border-color 0.1s linear, color 0.1s linear, transform 0.1s linear;
}

.footer-link--cta::after { display: none; }

.footer-link--cta:hover,
.footer-link--cta:focus-visible {
  border-color: var(--cyan);
  color: #FFFFFF;
  transform: translate(-1px, -1px);
}

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

.contact-row {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 8px;
  align-items: baseline;
}

.contact-key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--violet);
}

.contact-value {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--ink);
  word-break: break-word;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}

.footer-stamp {
  padding: 3px 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}

/* 7 · Layout & base components ------------------------------------------- */
.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 44px 0; }

.section-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--magenta);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 30px);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-lede {
  max-width: 62ch;
  font-size: 14px;
  color: var(--ink-dim);
}

.rule-skew {
  height: 0;
  margin: 36px 0;
  border: 0;
  border-top: 2px solid var(--line);
  transform: skewY(var(--skew));
}

/* Bento */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

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

.panel {
  position: relative;
  padding: 20px;
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
  transition: border-color 0.1s linear, transform 0.1s linear, box-shadow 0.1s linear;
}

.panel:hover {
  border-color: var(--cyan);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-cyan);
}

.panel p + p { margin-top: 10px; }

/* 标签 / 状态 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.tag--cyan {
  color: var(--cyan);
  border-color: rgba(0, 229, 255, 0.5);
  background: rgba(0, 229, 255, 0.08);
}

.tag--magenta {
  color: var(--magenta);
  border-color: rgba(255, 47, 180, 0.5);
  background: rgba(255, 47, 180, 0.08);
}

.tag--lime {
  color: var(--lime);
  border-color: rgba(180, 255, 57, 0.45);
  background: rgba(180, 255, 57, 0.08);
}

/* 数字锚点 */
.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

/* 体积条 */
.volume-bar {
  position: relative;
  height: 10px;
  background: #0B0818;
  border: 1px solid var(--line);
  overflow: hidden;
}

.volume-bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: 4px 4px 0 rgba(7, 6, 15, 0.9);
  color: var(--ink);
  font-family: var(--font-panel);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.1s linear, border-color 0.1s linear, box-shadow 0.1s linear, background 0.1s linear, color 0.1s linear;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--cyan);
  box-shadow: 6px 6px 0 rgba(0, 229, 255, 0.35);
  transform: translate(-2px, -2px);
}

.btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--bg);
  box-shadow: 4px 4px 0 rgba(255, 47, 180, 0.45);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--bg);
  box-shadow: 6px 6px 0 rgba(0, 229, 255, 0.5);
}

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

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: #FFFFFF;
}

/* 筛选 chip */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  background: var(--panel);
  border: 2px solid var(--line);
  color: var(--ink-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color 0.1s linear, color 0.1s linear, background 0.1s linear;
}

.chip:hover {
  border-color: var(--violet);
  color: var(--ink);
}

.chip[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--bg);
}

/* 文字链接 */
.link-line {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
  color: var(--cyan);
  text-decoration: none;
}

.link-line::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--magenta);
  transition: width 0.12s linear;
}

.link-line:hover::after,
.link-line:focus-visible::after { width: 100%; }

/* 面包屑 */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.breadcrumb-link {
  color: var(--ink-dim);
  text-decoration: none;
}

.breadcrumb-link:hover,
.breadcrumb-link:focus-visible { color: var(--cyan); }

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

/* 图文容器（页面阶段放入图片占位） */
.figure-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(255, 47, 180, 0.12)),
    var(--float);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.figure-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.10), rgba(255, 47, 180, 0.10));
  mix-blend-mode: screen;
  pointer-events: none;
}

.figure-frame--wide { aspect-ratio: 16 / 9; }
.figure-frame--square { aspect-ratio: 1 / 1; }
.figure-frame--tall { aspect-ratio: 3 / 4; }

/* 8 · 响应式 -------------------------------------------------------------- */
@media (max-width: 400px) {
  .brand-sub { display: none; }
  .nav-toggle-text { display: none; }
}

@media (min-width: 720px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

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

  .section { padding: 56px 0; }
}

@media (min-width: 900px) {
  body {
    padding-top: 0;
    padding-left: var(--rail-w);
  }

  body::before { display: none; }

  .deck-header {
    inset: 0 auto 0 0;
    width: var(--rail-w);
    height: 100vh;
    height: 100dvh;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    padding: 18px 10px 20px;
    border-right: 2px solid var(--line);
    border-bottom: 0;
    overflow: hidden;
    transition: width 0.16s linear;
  }

  .deck-header:hover,
  .deck-header:focus-within {
    width: 240px;
    box-shadow: 14px 0 0 rgba(0, 229, 255, 0.08);
  }

  .deck-header::after { display: none; }

  .deck-brand {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .brand-lockup { width: 100%; }

  .brand-words {
    opacity: 0;
    transition: opacity 0.12s linear;
  }

  .deck-header:hover .brand-words,
  .deck-header:focus-within .brand-words { opacity: 1; }

  .brand-tag {
    display: block;
    opacity: 0;
    white-space: nowrap;
    transition: opacity 0.12s linear;
  }

  .deck-header:hover .brand-tag,
  .deck-header:focus-within .brand-tag { opacity: 1; }

  .nav-toggle { display: none; }

  .deck-nav {
    position: static;
    z-index: auto;
    flex: 1 1 auto;
    width: auto;
    padding: 0;
    background: transparent;
    border: 0;
    transform: none;
    visibility: visible;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .rail-note {
    opacity: 0;
    white-space: nowrap;
    transition: opacity 0.12s linear;
  }

  .deck-header:hover .rail-note,
  .deck-header:focus-within .rail-note { opacity: 1; }

  .nav-list { gap: 4px; }

  .nav-link { padding: 10px 8px; }

  .nav-label {
    opacity: 0;
    transition: opacity 0.12s linear;
  }

  .deck-header:hover .nav-label,
  .deck-header:focus-within .nav-label { opacity: 1; }

  .rail-cta { padding: 12px 10px; }

  .rail-cta-text {
    display: inline-block;
    max-width: 0;
    opacity: 0;
    overflow: hidden;
    white-space: nowrap;
    transition: max-width 0.16s linear, opacity 0.12s linear;
  }

  .deck-header:hover .rail-cta-text,
  .deck-header:focus-within .rail-cta-text {
    max-width: 180px;
    opacity: 1;
  }

  .site-footer { margin-top: 72px; }
}

@media (min-width: 1040px) {
  .span-3 { grid-column: span 3; }
  .span-4 { grid-column: span 4; }
  .span-6 { grid-column: span 6; }
  .span-8 { grid-column: span 8; }

  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1.4fr; }
}

/* 9 · 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;
  }

  .panel:hover,
  .btn:hover,
  .btn:focus-visible,
  .nav-link:hover,
  .nav-link:focus-visible,
  .footer-link--cta:hover,
  .footer-link--cta:focus-visible,
  .rail-cta:hover,
  .rail-cta:focus-visible {
    transform: none;
  }
}