/* =========================================================
   酷体育电竞 · 共享站点样式 / assets/site.css
   ========================================================= */

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

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

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

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

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

/* ---------- 2. 设计变量 ---------- */
:root {
  --void: #0B0E14;
  --void-deep: #080B11;
  --panel: #121823;
  --panel-2: #161D2A;
  --line: #2A3442;
  --line-soft: rgba(42, 52, 66, 0.55);

  --cyan: #00F0FF;
  --cyan-ink: #A6FCFF;
  --ember: #FF5A1F;
  --ember-ink: #FFB08A;
  --violet: #7B2BFF;
  --violet-ink: #C7A8FF;

  --text: #F2F7FF;
  --text-dim: #A9B8C9;

  --ok: #38F2A4;
  --warn: #FFC24B;
  --err: #FF4D6D;

  --font-display: "Barlow Condensed", "Arial Narrow", "Noto Sans SC", "PingFang SC", Impact, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell-max: 1440px;
  --gutter: 48px;

  --r-xs: 3px;
  --r-sm: 6px;
  --r: 12px;
  --r-lg: 20px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shadow-panel: 0 18px 48px -28px rgba(0, 0, 0, 0.9);
  --glow-cyan: 0 0 26px rgba(0, 240, 255, 0.32);
  --glow-ember: 0 0 26px rgba(255, 90, 31, 0.28);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background: var(--void);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#main-content {
  display: block;
  scroll-margin-top: 24px;
}

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

/* ---------- 4. 布局工具 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid {
  display: grid;
  gap: 24px;
}

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

@media (max-width: 1024px) {
  .grid-12 { grid-template-columns: repeat(8, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .grid-12 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--ember-ink);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.6vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--text);
}

/* ---------- 5. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 26px;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: transform 0.18s var(--ease),
              box-shadow 0.18s var(--ease),
              background-color 0.18s var(--ease),
              border-color 0.18s var(--ease),
              color 0.18s var(--ease);
}

.btn-ember {
  background: linear-gradient(120deg, #FF5A1F 0%, #FF8138 100%);
  color: #1A0800;
  box-shadow: var(--glow-ember);
}

.btn-ember:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(255, 90, 31, 0.45);
}

.btn-cyan {
  background: linear-gradient(120deg, #00F0FF 0%, #67F7FF 100%);
  color: #02181C;
  box-shadow: var(--glow-cyan);
}

.btn-cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(0, 240, 255, 0.45);
}

.btn-ghost {
  border: 1px solid var(--line);
  background: rgba(18, 24, 35, 0.6);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.42;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ---------- 6. 文档组件 ---------- */
.breadcrumb {
  padding-block: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.breadcrumb a {
  transition: color 0.18s var(--ease);
}

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

.prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--text);
}

.prose > * + * {
  margin-top: 18px;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  margin-top: 40px;
}

.prose h3 {
  font-size: 19px;
  font-weight: 700;
  margin-top: 32px;
}

.prose ul,
.prose ol {
  padding-left: 1.2em;
  list-style: disc;
}

.prose a {
  color: var(--cyan-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 7. 玻璃面板与图文容器 ---------- */
.panel {
  background: linear-gradient(155deg, rgba(22, 29, 42, 0.92), rgba(11, 14, 20, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-panel);
}

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(150deg, #161D2A 0%, #0B0E14 100%);
  box-shadow: var(--shadow-panel);
}

.media-frame[data-ratio="16:9"] { aspect-ratio: 16 / 9; }
.media-frame[data-ratio="4:3"]  { aspect-ratio: 4 / 3; }
.media-frame[data-ratio="1:1"]  { aspect-ratio: 1 / 1; }
.media-frame[data-ratio="3:4"]  { aspect-ratio: 3 / 4; }

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 14, 20, 0) 42%, rgba(11, 14, 20, 0.78) 100%);
  pointer-events: none;
}

/* ---------- 8. 标签页 ---------- */
.tabs {
  display: block;
  width: 100%;
}

.tablist {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: 1px solid var(--line);
}

.tablist::-webkit-scrollbar {
  display: none;
}

.tab {
  flex: 0 0 auto;
  min-height: 44px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.tab:hover {
  color: var(--text);
}

.tab[aria-selected="true"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  text-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
}

.tabpanel {
  padding-top: 24px;
}

.tabpanel[hidden] {
  display: none !important;
}

/* ---------- 9. 动效协议 ---------- */
[data-reveal-on] [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.42s var(--ease), transform 0.42s var(--ease);
}

[data-reveal-on] [data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

/* =========================================================
   10. 页头
   ========================================================= */
.site-header {
  position: relative;
  z-index: 60;
  background: linear-gradient(180deg, #0B0E14 0%, #0D1119 100%);
  border-bottom: 1px solid var(--line);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), var(--ember), transparent);
  opacity: 0.55;
  pointer-events: none;
}

/* 跳过导航 */
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 140;
  padding: 12px 20px;
  background: var(--cyan);
  color: #04141A;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--r-sm);
  transition: top 0.2s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 16px;
  outline: 2px solid var(--violet-ink);
  outline-offset: 3px;
}

/* 滚动进度 */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  z-index: 130;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--ember));
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.5);
  pointer-events: none;
}

/* 实用条 */
.utility-bar {
  background: var(--void-deep);
  border-bottom: 1px solid var(--line-soft);
}

.utility-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 40px;
  padding-block: 6px;
}

.utility-note {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--text-dim);
}

.dot-pulse {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--ok);
  animation: dotPulse 2.6s var(--ease) infinite;
}

@keyframes dotPulse {
  0%   { box-shadow: 0 0 0 0 rgba(56, 242, 164, 0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(56, 242, 164, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 242, 164, 0); }
}

.utility-links {
  display: flex;
  gap: 20px;
  font-size: 12.5px;
  color: var(--text-dim);
}

.utility-links a {
  transition: color 0.18s var(--ease);
}

.utility-links a:hover {
  color: var(--cyan-ink);
}

/* 刊头 */
.masthead {
  background: linear-gradient(180deg, rgba(123, 43, 255, 0.06), rgba(11, 14, 20, 0));
}

.masthead-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding-block: 22px;
}

.brand-lockup {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-glyph {
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  transform: skew(-6deg);
}

.brand-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.05;
}

.brand-wordmark {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.2vw, 44px);
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--text);
  transform: skewX(-4deg);
  text-shadow: 0 0 18px rgba(0, 240, 255, 0.25);
}

.brand-descriptor {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--cyan-ink);
  opacity: 0.85;
}

.masthead-cta {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: var(--r-sm);
  background: linear-gradient(120deg, #FF5A1F 0%, #FF7A3D 100%);
  color: #1A0800;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: var(--glow-ember);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.masthead-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 34px rgba(255, 90, 31, 0.45);
}

.masthead-cta-arrow {
  font-family: var(--font-mono);
  font-size: 14px;
}

/* 移动导航按钮 */
.nav-toggle {
  justify-self: start;
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(18, 24, 35, 0.7);
  color: var(--text);
  font-size: 13px;
  font-weight: 650;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

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

.nav-toggle-box {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle-box > span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.22s var(--ease), opacity 0.18s var(--ease);
}

.site-header[data-open] .nav-toggle-box > span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.site-header[data-open] .nav-toggle-box > span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-toggle-text {
  white-space: nowrap;
}

/* 主导航 */
.primary-nav {
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(18, 24, 35, 0.92), rgba(11, 14, 20, 0.92));
}

.nav-inner {
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 650;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
  transition: color 0.18s var(--ease),
              border-color 0.18s var(--ease),
              background-color 0.18s var(--ease);
}

.nav-list a:hover {
  color: var(--text);
  background: rgba(0, 240, 255, 0.06);
}

.nav-list a[aria-current="page"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  text-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  opacity: 0.55;
}

.nav-list a[aria-current="page"] .nav-index {
  opacity: 1;
}

/* 快捷胶囊条 */
.quick-strip {
  background: #0A0D13;
  border-top: 1px solid rgba(42, 52, 66, 0.5);
}

.quick-strip-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-block: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.quick-strip-inner::-webkit-scrollbar {
  display: none;
}

.quick-strip-title {
  flex: 0 0 auto;
  padding-right: 16px;
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--text-dim);
  white-space: nowrap;
}

.quick-list {
  display: flex;
  gap: 10px;
  flex: 1 1 auto;
}

.quick-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(18, 24, 35, 0.6);
  white-space: nowrap;
  transition: border-color 0.18s var(--ease),
              background-color 0.18s var(--ease),
              transform 0.18s var(--ease);
}

.quick-chip:hover {
  border-color: rgba(0, 240, 255, 0.5);
  background: rgba(0, 240, 255, 0.08);
  transform: translateY(-1px);
}

.quick-chip-index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ember);
}

.quick-chip-label {
  font-size: 13.5px;
  font-weight: 650;
  color: var(--text);
}

.quick-chip-desc {
  font-size: 12px;
  color: var(--text-dim);
}

/* =========================================================
   11. 页脚
   ========================================================= */
.site-footer {
  position: relative;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(123, 43, 255, 0.16), transparent 62%),
    var(--void-deep);
  border-top: 1px solid var(--line);
  color: var(--text-dim);
}

.footer-edge {
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--violet) 45%, var(--ember) 100%);
}

.footer-lead {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding-block: 56px 40px;
  border-bottom: 1px solid var(--line-soft);
}

.footer-brand {
  max-width: 640px;
}

.footer-eyebrow {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--ember-ink);
}

.footer-statement {
  font-family: var(--font-display);
  font-size: clamp(21px, 2.4vw, 32px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--text);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  padding-block: 44px;
}

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

.footer-col-title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-ink);
}

.footer-links {
  display: grid;
  gap: 8px;
  font-size: 14px;
}

.footer-links a {
  display: inline-block;
  padding-block: 4px;
  color: var(--text-dim);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.footer-links a:hover {
  color: var(--cyan);
  transform: translateX(3px);
}

.footer-contact {
  padding-block: 34px 32px;
  border-top: 1px solid var(--line-soft);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 24px;
}

.contact-cell {
  min-width: 0;
}

.contact-cell-wide {
  grid-column: span 1;
}

.contact-key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
  opacity: 0.72;
}

.contact-val {
  display: block;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  text-align: left;
  color: var(--text);
  font-size: 14px;
  line-height: 1.65;
  transition: color 0.18s var(--ease);
}

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

.copy-text {
  word-break: break-all;
}

.copy-hint {
  flex: 0 0 auto;
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.copy-btn[data-copied] .copy-hint {
  color: var(--ok);
  border-color: rgba(56, 242, 164, 0.55);
}

.contact-note {
  margin-top: 24px;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 194, 75, 0.55);
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-dim);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 24px 36px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  color: var(--text-dim);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.footer-base-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-mini-link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  transition: color 0.18s var(--ease);
}

.footer-mini-link:hover {
  color: var(--cyan-ink);
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(18, 24, 35, 0.72);
  color: var(--text);
  font-size: 13px;
  font-weight: 650;
  transition: border-color 0.18s var(--ease),
              color 0.18s var(--ease),
              transform 0.18s var(--ease);
}

.back-to-top:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

/* =========================================================
   12. 响应式
   ========================================================= */
@media (max-width: 1100px) {
  :root { --gutter: 32px; }

  .nav-list a { padding: 0 13px; }

  .footer-grid { gap: 24px; }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .masthead-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-block: 16px;
  }

  .nav-toggle { order: 1; }

  .brand-lockup {
    order: 2;
    flex: 1 1 auto;
    justify-content: center;
    gap: 10px;
  }

  .masthead-cta { order: 3; }

  .brand-wordmark { font-size: clamp(21px, 5vw, 30px); }

  .brand-descriptor {
    font-size: 9px;
    letter-spacing: 0.14em;
    margin-top: 5px;
  }

  .brand-glyph { display: none; }

  .primary-nav {
    display: none;
    border-top: 1px solid var(--line);
  }

  .site-header[data-open] .primary-nav {
    display: block;
    animation: navDrop 0.26s var(--ease);
  }

  @keyframes navDrop {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: none; }
  }

  .nav-inner { padding-block: 6px 10px; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-list a {
    min-height: 52px;
    padding: 0 12px;
    font-size: 15px;
    border-bottom: 1px solid var(--line-soft);
    border-left: 2px solid transparent;
    border-radius: 0;
  }

  .nav-list a:hover {
    background: rgba(0, 240, 255, 0.05);
  }

  .nav-list a[aria-current="page"] {
    border-bottom-color: var(--line-soft);
    border-left-color: var(--cyan);
    background: rgba(0, 240, 255, 0.07);
  }

  .quick-strip-title { display: none; }

  .quick-strip-inner {
    padding-block: 10px;
    padding-inline: var(--gutter);
    margin-inline: calc(var(--gutter) * -1);
  }

  .footer-lead {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    padding-block: 44px 32px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 24px;
    padding-block: 36px;
  }
}

@media (max-width: 720px) {
  .utility-inner {
    min-height: 36px;
    justify-content: center;
  }

  .utility-links { display: none; }

  .utility-note {
    font-size: 11px;
    letter-spacing: 0;
    text-align: center;
  }

  .quick-chip-desc { display: none; }

  .footer-statement { font-size: 20px; }

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-block: 22px 34px;
  }

  .footer-base-right {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 600px) {
  .masthead-cta { display: none; }

  .btn { width: 100%; }

  .footer-lead .btn { width: auto; }
}

@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }

  .footer-lead .btn { width: 100%; }
}

/* =========================================================
   13. 动效与可访问性收束
   ========================================================= */
@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-on] [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .dot-pulse { animation: none; }
}