/* ============================================================
   Site Kit · 上下分电玩城 · flash-dwc.com.cn
   共享外壳：悬浮胶囊导航 / 堆叠面板页脚 / 霓虹街机夜色彩系统
   ============================================================ */

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

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

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

ul, ol { padding: 0; list-style: none; }

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

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

a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #06080F;
  --ink-2: #080C16;
  --panel: #0C1220;
  --panel-2: #101828;
  --line: #22304D;
  --line-soft: rgba(34, 48, 77, 0.6);

  --cyan: #33E1D6;
  --violet: #7C5CFF;
  --amber: #FFAE57;
  --light: #E8F6F4;
  --ok: #4BE3A2;

  --text: #F2F6FF;
  --muted: #A9B6D0;

  --glow-cyan: 0 0 18px rgba(51, 225, 214, 0.28);
  --glow-violet: 0 0 22px rgba(124, 92, 255, 0.35);

  --radius-pill: 999px;
  --radius-panel: 20px;
  --wrap: 1200px;
  --narrow: 760px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --cut-lg: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));

  --font-heading: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-num: 'DIN Alternate', 'Barlow Semi Condensed', ui-monospace, SFMono-Regular, Menlo, monospace;

  --gutter: clamp(28px, 6vw, 64px);
}

/* ---------- 3. 中文排版与基础画布 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--ink);
  background-image:
    radial-gradient(920px 520px at 10% -10%, rgba(51, 225, 214, 0.13), transparent 62%),
    radial-gradient(780px 460px at 92% 2%, rgba(124, 92, 255, 0.17), transparent 64%),
    radial-gradient(620px 380px at 50% 108%, rgba(255, 174, 87, 0.07), transparent 70%),
    repeating-linear-gradient(to bottom, rgba(242, 246, 255, 0.02) 0 1px, transparent 1px 4px),
    linear-gradient(180deg, #06080F 0%, #070B14 46%, #06080F 100%);
  background-repeat: no-repeat, no-repeat, no-repeat, repeat, no-repeat;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text);
}

h1 {
  font-size: clamp(30px, 5vw, 52px);
  text-shadow: var(--glow-cyan);
}

h2 { font-size: clamp(22px, 3.4vw, 36px); }
h3 { font-size: clamp(18px, 2.2vw, 22px); }
h4 { font-size: 18px; }

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

strong, b { font-weight: 700; }

small { font-size: 12px; color: var(--muted); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. 布局容器与网格 ---------- */
.wrap {
  width: min(var(--wrap), 100% - var(--gutter));
  margin-inline: auto;
}

.wrap--narrow {
  width: min(var(--narrow), 100% - var(--gutter));
  margin-inline: auto;
}

.grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
}

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: clamp(18px, 3vw, 32px);
}

.section-title {
  margin: 0;
  color: var(--text);
  text-shadow: var(--glow-cyan);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.lede {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- 5. 面板 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border-radius: var(--radius-panel);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, var(--panel) 0%, var(--ink-2) 82%);
  box-shadow: 0 14px 36px -20px rgba(0, 0, 0, 0.95);
  transition: transform 0.16s ease-out, border-color 0.16s ease-out;
}

.panel:hover {
  transform: translateY(-4px);
  border-color: rgba(51, 225, 214, 0.34);
}

.panel--cut {
  border-radius: 0;
  border: 1px solid transparent;
  clip-path: var(--cut-lg);
  background:
    linear-gradient(160deg, var(--panel) 0%, var(--ink-2) 84%) padding-box,
    linear-gradient(150deg, rgba(51, 225, 214, 0.5), rgba(124, 92, 255, 0.28) 52%, rgba(34, 48, 77, 0.9)) border-box;
  box-shadow: none;
}

.panel--cut:hover {
  border-color: transparent;
  background:
    linear-gradient(160deg, #0E1727 0%, var(--ink-2) 84%) padding-box,
    linear-gradient(150deg, rgba(51, 225, 214, 0.85), rgba(124, 92, 255, 0.5) 52%, rgba(51, 225, 214, 0.4)) border-box;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.16s ease-out, box-shadow 0.16s ease-out, background-color 0.16s ease-out, border-color 0.16s ease-out;
}

.btn--primary {
  color: #1B0F02;
  background: linear-gradient(135deg, #FFC078, var(--amber) 46%, #FF8F3A);
  box-shadow: 0 10px 24px -12px rgba(255, 174, 87, 0.95);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px -12px rgba(255, 174, 87, 1);
}

.btn--ghost {
  color: var(--cyan);
  background: rgba(51, 225, 214, 0.08);
  border-color: rgba(51, 225, 214, 0.4);
}

.btn--ghost:hover {
  background: rgba(51, 225, 214, 0.17);
  transform: translateY(-2px);
}

.btn--line {
  color: var(--text);
  background: transparent;
  border-color: var(--line);
}

.btn--line:hover {
  border-color: rgba(124, 92, 255, 0.7);
  color: var(--violet);
  transform: translateY(-2px);
}

/* ---------- 7. 标签胶囊 / 面包屑 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-soft);
  background: rgba(34, 48, 77, 0.35);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.16s ease-out, background-color 0.16s ease-out, border-color 0.16s ease-out;
}

.chip:hover {
  color: var(--text);
  border-color: rgba(51, 225, 214, 0.45);
}

.chip--active,
.chip[aria-pressed="true"] {
  color: #04201C;
  font-weight: 700;
  background: linear-gradient(135deg, var(--cyan), #22C9C1);
  border-color: var(--cyan);
  box-shadow: 0 0 16px rgba(51, 225, 214, 0.4);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

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

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

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.16s ease-out;
}

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

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

/* ---------- 8. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(150deg, #0E1728 0%, #080D18 100%);
}

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 46%, rgba(51, 225, 214, 0.16) 100%);
  mix-blend-mode: screen;
}

.media-frame--cut {
  border-radius: 0;
  border: 0;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.media-frame--cut::after {
  background: linear-gradient(180deg, transparent 48%, rgba(124, 92, 255, 0.22) 100%);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame--empty {
  background-image:
    repeating-linear-gradient(135deg, rgba(51, 225, 214, 0.07) 0 2px, transparent 2px 14px),
    linear-gradient(150deg, #0E1728 0%, #080D18 100%);
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px rgba(75, 227, 162, 0.9);
}

/* ---------- 9. 头部：悬浮胶囊导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: clamp(12px, 2vw, 20px) 0 0;
  transition: padding 0.3s var(--ease);
}

.site-header[data-condensed="true"] {
  padding-top: 8px;
}

.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 130;
  background: rgba(34, 48, 77, 0.55);
  pointer-events: none;
}

.scroll-meter__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 58%, var(--amber));
  box-shadow: 0 0 14px rgba(51, 225, 214, 0.7);
  transition: width 0.1s linear;
}

.skip-link {
  position: absolute;
  left: clamp(14px, 4vw, 32px);
  top: 6px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--cyan);
  color: #04201C;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

.header-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  width: min(var(--wrap), 100% - var(--gutter));
  margin-inline: auto;
  padding: 10px 12px 10px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(34, 48, 77, 0.9);
  background: linear-gradient(118deg, rgba(12, 18, 32, 0.94) 0%, rgba(6, 8, 15, 0.9) 100%);
  box-shadow:
    0 14px 40px -22px rgba(0, 0, 0, 0.95),
    inset 0 1px 0 rgba(51, 225, 214, 0.14);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: padding 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-header[data-condensed="true"] .header-shell {
  padding-top: 6px;
  padding-bottom: 6px;
  box-shadow:
    0 18px 44px -20px rgba(0, 0, 0, 1),
    inset 0 1px 0 rgba(51, 225, 214, 0.2);
}

.site-header[data-condensed="true"] .brand-sub { display: none; }

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  background: linear-gradient(140deg, var(--cyan), var(--violet));
  clip-path: polygon(24% 0, 100% 0, 100% 76%, 76% 100%, 0 100%, 0 24%);
  filter: drop-shadow(0 0 10px rgba(51, 225, 214, 0.45));
}

.brand-mark__dot {
  width: 9px;
  height: 9px;
  background: #06080F;
  clip-path: polygon(24% 0, 100% 0, 100% 76%, 76% 100%, 0 100%, 0 24%);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-lockup {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.brand-sub {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 13px 5px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(51, 225, 214, 0.26);
  background: rgba(51, 225, 214, 0.08);
  color: #CFFAF6;
  font-size: 12px;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.16s ease-out, border-color 0.16s ease-out;
}

.status-chip:hover {
  background: rgba(51, 225, 214, 0.16);
  border-color: rgba(51, 225, 214, 0.5);
}

.status-chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 8px rgba(75, 227, 162, 0.95);
  animation: chipPulse 2.6s ease-in-out infinite;
}

@keyframes chipPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(124, 92, 255, 0.42);
  background: rgba(124, 92, 255, 0.14);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.16s ease-out, border-color 0.16s ease-out;
}

.nav-toggle:hover {
  background: rgba(124, 92, 255, 0.26);
  border-color: rgba(124, 92, 255, 0.7);
}

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

.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.22s var(--ease), opacity 0.16s ease-out;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.nav-toggle__label { white-space: nowrap; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

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

.nav-item { display: block; }

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s ease-out, background-color 0.16s ease-out;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(124, 92, 255, 0.16);
}

.nav-link[aria-current="page"] {
  color: #042220;
  font-weight: 700;
  background: linear-gradient(135deg, var(--cyan), #22C9C1);
  box-shadow: 0 0 18px rgba(51, 225, 214, 0.45);
}

.nav-link[aria-current="page"]:hover {
  color: #042220;
  background: linear-gradient(135deg, #5CF3E8, var(--cyan));
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  color: #1B0F02;
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  background: linear-gradient(135deg, #FFC078, var(--amber) 46%, #FF8F3A);
  box-shadow: 0 8px 20px -10px rgba(255, 174, 87, 0.95);
  transition: transform 0.16s ease-out, box-shadow 0.16s ease-out;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 26px -10px rgba(255, 174, 87, 1);
}

.nav-cta:active { transform: translateY(0); }

/* ---------- 10. 页脚：层叠画板 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 110px);
  overflow: hidden;
  border-top: 1px solid var(--line-soft);
  background:
    linear-gradient(180deg, rgba(12, 18, 32, 0.9) 0%, #080C16 62%, #06080F 100%);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(620px 280px at 12% 0%, rgba(51, 225, 214, 0.12), transparent 72%),
    radial-gradient(560px 260px at 88% 6%, rgba(124, 92, 255, 0.16), transparent 74%),
    linear-gradient(to right, rgba(34, 48, 77, 0.28) 1px, transparent 1px);
  background-size: auto, auto, 120px 100%;
}

.footer-beam {
  position: absolute;
  top: -1px;
  left: 50%;
  width: min(var(--wrap), 92vw);
  height: 2px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, var(--violet) 22%, var(--cyan) 52%, var(--amber) 84%, transparent);
  opacity: 0.6;
  pointer-events: none;
}

.footer-wrap {
  position: relative;
  z-index: 1;
  width: min(var(--wrap), 100% - var(--gutter));
  margin-inline: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.6fr);
  gap: clamp(28px, 5vw, 68px);
  padding-block: clamp(40px, 6vw, 68px) clamp(22px, 3vw, 34px);
}

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

.footer-brand__name {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  text-shadow: var(--glow-cyan);
}

.footer-tagline {
  margin-top: 12px;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: #CBD6EE;
}

.footer-note {
  position: relative;
  margin-top: 14px;
  padding-left: 14px;
  max-width: 42ch;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

.footer-note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), transparent);
}

.footer-brand__cta {
  display: inline-flex;
  align-items: center;
  margin-top: 20px;
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(51, 225, 214, 0.38);
  background: rgba(51, 225, 214, 0.08);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background-color 0.16s ease-out, border-color 0.16s ease-out, transform 0.16s ease-out;
}

.footer-brand__cta:hover {
  background: rgba(51, 225, 214, 0.18);
  border-color: rgba(51, 225, 214, 0.75);
  transform: translateY(-2px);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 44px);
}

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

.footer-col__heading {
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cyan);
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-link {
  display: inline-block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
  text-decoration: none;
  transition: color 0.16s ease-out, transform 0.16s ease-out;
}

.footer-link:hover {
  color: var(--cyan);
  transform: translateX(4px);
}

.footer-service {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 32px;
  padding-block: clamp(18px, 2.4vw, 24px);
  border-top: 1px dashed rgba(34, 48, 77, 0.95);
}

.footer-service__item {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-size: 13px;
  line-height: 1.7;
  min-width: 0;
}

.footer-service__label {
  color: var(--muted);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.footer-service__value {
  color: var(--text);
  word-break: break-word;
}

.footer-service__link {
  margin-left: auto;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(124, 92, 255, 0.5);
  color: #C6B8FF;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.16s ease-out, color 0.16s ease-out;
}

.footer-service__link:hover {
  background: rgba(124, 92, 255, 0.24);
  color: var(--text);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  padding-block: 18px 34px;
  border-top: 1px solid rgba(34, 48, 77, 0.7);
  font-size: 12px;
  color: var(--muted);
}

.footer-copy,
.footer-icp,
.footer-state {
  margin: 0;
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}

.footer-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--line);
}

/* ---------- 11. 滚动显现 ---------- */
@media (prefers-reduced-motion: no-preference) {
  html.js [data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.38s var(--ease), transform 0.38s var(--ease);
  }

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

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1080px) {
  .nav-link { padding: 8px 11px; font-size: 13.5px; }
  .nav-cta { padding: 9px 16px; font-size: 13px; }
  .footer-top { grid-template-columns: minmax(0, 1fr); gap: 32px; }
}

@media (max-width: 900px) {
  .header-shell { padding: 8px 10px 8px 14px; gap: 10px; }
  .nav-toggle { display: inline-flex; }
  .brand-cluster { gap: 10px; }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-left: 0;
    padding: 14px;
    border-radius: 24px;
    border: 1px solid var(--line);
    background: linear-gradient(160deg, rgba(12, 18, 32, 0.99) 0%, rgba(6, 8, 15, 1) 100%);
    box-shadow: 0 30px 60px -24px rgba(0, 0, 0, 0.95);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
    border-radius: 14px;
    font-size: 15px;
  }

  .nav-cta {
    padding: 12px 18px;
    font-size: 14px;
  }

  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-cols { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-service__link { margin-left: 0; }
}

@media (max-width: 780px) {
  .status-chip { display: none; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .brand-lockup { font-size: 14px; }
  .brand-mark { width: 24px; height: 24px; }
  .nav-toggle__label { display: none; }
  .nav-toggle { padding: 10px; }
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-service { gap: 10px 22px; }
  .footer-service__item { font-size: 12.5px; }
  .footer-sep { display: none; }
  .footer-meta { gap: 6px 14px; }
}

@media (max-width: 400px) {
  .footer-cols { grid-template-columns: minmax(0, 1fr); }
  .brand-lockup { font-size: 13px; }
}

/* ---------- 13. Reduced motion ---------- */
@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;
  }

  [data-reveal],
  html.js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: opacity 0.12s linear !important;
  }

  .status-chip__dot { animation: none !important; }
  .panel:hover { transform: none; }
  .footer-link:hover { transform: none; }
  .nav-cta:hover,
  .btn:hover { transform: none; }
}