/* ============================================================
   亚洲登录入口 · 共享样式 /assets/site.css
   夜间航站楼：墨蓝地、路标青、档案金
   ============================================================ */

/* ---------- 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;
  padding: 0;
}

ul, ol { list-style: none; }

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

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

button { background: none; border: 0; }

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

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #071426;
  --ink-800: #0B1F36;
  --ink-700: #12324D;
  --cyan: #37E6D0;
  --cyan-deep: #0E7F86;
  --amber: #F2B84B;
  --amber-soft: #FFD98A;
  --sage: #5E7A72;
  --mist: #EAF2F4;
  --slate: #8FA6B2;
  --warn: #E07A5F;
  --glass: rgba(55, 230, 208, 0.10);
  --line: rgba(94, 122, 114, 0.35);
  --line-soft: rgba(94, 122, 114, 0.20);

  --shell: 1200px;
  --radius-sm: 2px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --font-head: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC",
    system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system,
    "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular,
    Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 3. 中文排版与基础 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  color: var(--mist);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1000px 520px at 82% -8%, rgba(55, 230, 208, 0.07), transparent 68%),
    radial-gradient(760px 420px at -10% 6%, rgba(242, 184, 75, 0.05), transparent 70%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.06em;
  color: var(--mist);
}

h1 { font-size: clamp(30px, 4.6vw, 52px); line-height: 1.1; letter-spacing: 0.1em; }
h2 { font-size: clamp(24px, 3.4vw, 40px); line-height: 1.15; letter-spacing: 0.08em; }
h3 { font-size: clamp(19px, 2.2vw, 26px); letter-spacing: 0.06em; }
h4 { font-size: 18px; }

p { line-height: 1.8; }

strong { font-weight: 500; color: var(--mist); }

::selection {
  background: rgba(55, 230, 208, 0.30);
  color: #ffffff;
}

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

/* ---------- 4. 工具类 ---------- */
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background: var(--cyan);
  color: #04202a;
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: 0.12em;
  transform: translateY(-200%);
  transition: transform 0.24s var(--ease);
}

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

/* ---------- 5. 页头 ---------- */
.site-header {
  position: relative;
  z-index: 20;
  color: var(--mist);
  background-color: var(--ink-800);
  background-image:
    radial-gradient(120% 150% at 50% -40%, rgba(55, 230, 208, 0.12), transparent 62%);
  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, rgba(55, 230, 208, 0.6) 50%, transparent);
  pointer-events: none;
}

/* 顶部细条 */
.header-rule {
  border-bottom: 1px solid var(--line-soft);
  background: rgba(7, 20, 38, 0.55);
}

.header-rule__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 7px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--slate);
}

.header-rule__edition {
  color: var(--amber);
  letter-spacing: 0.2em;
  white-space: nowrap;
}

.header-rule__note {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* 刊头 */
.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: end;
  gap: 24px;
  padding-block: 26px 22px;
}

.masthead__brand {
  display: grid;
  justify-items: center;
  gap: 4px;
  padding-inline: 8px;
  text-align: center;
  transition: transform 0.3s var(--ease);
}

.masthead__mark {
  position: relative;
  display: block;
  width: 13px;
  height: 13px;
  margin-bottom: 10px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
  transition: border-color 0.3s var(--ease), transform 0.4s var(--ease);
}

.masthead__mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--amber);
  opacity: 0.85;
}

.masthead__brand:hover .masthead__mark,
.masthead__brand:focus-visible .masthead__mark {
  border-color: var(--amber);
  transform: rotate(135deg);
}

.masthead__name {
  font-family: var(--font-head);
  font-size: clamp(26px, 4.4vw, 44px);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: 0.14em;
  color: var(--mist);
  transition: color 0.28s var(--ease);
}

.masthead__brand:hover .masthead__name,
.masthead__brand:focus-visible .masthead__name {
  color: var(--cyan);
}

.masthead__tagline {
  font-size: 12px;
  letter-spacing: 0.34em;
  color: var(--slate);
}

.masthead__vertical {
  align-self: end;
  justify-self: start;
  padding-bottom: 4px;
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--sage);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.masthead__aside {
  display: grid;
  gap: 8px;
  justify-self: end;
  max-width: 220px;
  text-align: right;
}

.masthead__label {
  font-size: 10px;
  letter-spacing: 0.26em;
  color: var(--amber);
}

.masthead__hint {
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate);
}

/* 栏目带 */
.nav {
  border-top: 1px solid var(--line);
  background: rgba(7, 20, 38, 0.72);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.nav__item { flex: 0 0 auto; }

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 15px 16px;
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
  transition: color 0.25s var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 8px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--ease);
}

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

.nav__link:hover::after,
.nav__link:focus-visible::after {
  transform: scaleX(1);
}

.nav__index {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--amber);
  opacity: 0.9;
}

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

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

.nav__link[aria-current="page"] .nav__index {
  color: var(--amber-soft);
}

/* 移动端开关 */
.nav__toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 14px 4px;
  color: var(--mist);
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: 0.22em;
  cursor: pointer;
  transition: color 0.25s var(--ease);
}

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

.nav__toggle-text { padding-left: 4px; }

.nav__toggle-bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  margin-right: 4px;
}

.nav__toggle-bars::before,
.nav__toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--cyan);
  transition: transform 0.25s var(--ease), top 0.25s var(--ease);
}

.nav__toggle-bars::before { top: 2px; }
.nav__toggle-bars::after { top: 8px; }

.nav[data-open="true"] .nav__toggle-bars::before {
  top: 5px;
  transform: rotate(45deg);
}

.nav[data-open="true"] .nav__toggle-bars::after {
  top: 5px;
  transform: rotate(-45deg);
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(40px, 7vw, 88px);
  padding-block: clamp(40px, 6vw, 72px) 28px;
  color: var(--mist);
  background-image: linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--sage) 0 14px,
    transparent 14px 30px
  );
  opacity: 0.55;
  pointer-events: none;
}

.footer-shell {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

/* 联系锚点带 */
.footer-band {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid rgba(55, 230, 208, 0.28);
  border-radius: var(--radius-lg);
  background-image:
    linear-gradient(135deg, rgba(55, 230, 208, 0.10), rgba(18, 50, 77, 0.62) 70%);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.footer-band__head {
  display: grid;
  align-content: start;
  gap: 12px;
}

.footer-band__tag {
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--amber);
}

.footer-band__title {
  font-family: var(--font-head);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 500;
  line-height: 1.28;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.footer-band__text {
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.footer-band__cta {
  justify-self: start;
  margin-top: 4px;
}

.footer-band__list {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.footer-band__item {
  display: grid;
  align-content: start;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(7, 20, 38, 0.55);
}

.footer-band__key {
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--amber);
}

.footer-band__value {
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
  word-break: break-word;
}

.copy-btn {
  justify-self: start;
  margin-top: 4px;
  padding: 6px 12px;
  border: 1px solid rgba(55, 230, 208, 0.45);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: background-color 0.24s var(--ease), color 0.24s var(--ease),
    border-color 0.24s var(--ease);
}

.copy-btn:hover {
  background: rgba(55, 230, 208, 0.14);
  border-color: var(--amber);
  color: var(--amber-soft);
}

.copy-btn[data-copied="true"] {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(242, 184, 75, 0.12);
}

.copy-feedback {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.5;
  color: var(--cyan);
}

.copy-feedback:empty { display: none; }

/* 页脚信息区 */
.footer-grid {
  display: grid;
  gap: 26px;
  grid-template-columns: minmax(0, 1fr);
}

.footer-brand__name {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 22px;
  letter-spacing: 0.12em;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.footer-brand__name:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan-deep);
}

.footer-brand__desc {
  margin-top: 10px;
  max-width: 32ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate);
}

.footer-links__title {
  margin-bottom: 12px;
  font-size: 10px;
  letter-spacing: 0.26em;
  color: var(--sage);
}

.footer-links__list {
  display: grid;
  gap: 9px;
}

.footer-links__link {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.footer-links__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan-deep);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.footer-meta__icp {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.footer-meta__copy { margin: 0; }

.footer-meta__edition {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sage);
}

/* ---------- 7. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: 0.14em;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.24s var(--ease), color 0.24s var(--ease),
    border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04202a;
  font-weight: 500;
}

.btn--primary:hover {
  background: var(--amber-soft);
  border-color: var(--amber-soft);
  color: #1a1205;
}

.btn--ghost {
  background: transparent;
  border-color: rgba(55, 230, 208, 0.45);
  color: var(--cyan);
}

.btn--ghost:hover {
  background: rgba(55, 230, 208, 0.12);
  border-color: var(--amber);
  color: var(--amber-soft);
}

.btn:active { transform: translateY(1px); }

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

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

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

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--sage);
}

.breadcrumbs__link {
  color: var(--slate);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.breadcrumbs__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan-deep);
}

.breadcrumbs__current { color: var(--mist); }

/* ---------- 9. 布局容器与栅格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.section { padding-block: clamp(40px, 7vw, 88px); }
.section--tight { padding-block: clamp(28px, 4vw, 48px); }
.section--divided { border-top: 1px solid var(--line-soft); }

.grid {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

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

.grid--three {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

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

/* ---------- 10. 标题与标签组件 ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--amber);
  text-transform: uppercase;
}

.section__title {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.section__lead {
  margin-top: 12px;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate);
}

.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.prose p + p { margin-top: 1em; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(94, 122, 114, 0.12);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--slate);
}

.tag--amber {
  border-color: rgba(242, 184, 75, 0.45);
  background: rgba(242, 184, 75, 0.10);
  color: var(--amber);
}

.tag--cyan {
  border-color: rgba(55, 230, 208, 0.45);
  background: rgba(55, 230, 208, 0.10);
  color: var(--cyan);
}

.step-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.side-note {
  font-family: var(--font-body);
  font-size: 11px;
  line-height: 1.9;
  letter-spacing: 0.28em;
  color: var(--sage);
}

/* ---------- 11. 卡片与资料片 ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--ink-700);
  color: var(--mist);
  transition: border-color 0.28s var(--ease), transform 0.32s var(--ease),
    background-color 0.28s var(--ease);
}

.card--glass {
  border-color: rgba(55, 230, 208, 0.28);
  background: var(--glass);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.card--solid { background: var(--ink-700); }

.card--focus {
  border-color: rgba(55, 230, 208, 0.6);
  box-shadow: 0 0 0 1px rgba(55, 230, 208, 0.16),
    0 24px 50px -34px rgba(55, 230, 208, 0.85);
}

.card:hover {
  border-color: rgba(55, 230, 208, 0.5);
  transform: translateY(-2px);
}

.card__title {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.32;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.card__text {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background-image: linear-gradient(
    140deg,
    rgba(55, 230, 208, 0.14),
    rgba(11, 31, 54, 0.92) 55%,
    rgba(242, 184, 75, 0.12)
  );
}

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

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
  background-image: linear-gradient(180deg, transparent, rgba(7, 20, 38, 0.88));
}

/* ---------- 12. 滚动显现协议 ---------- */
.js-motion [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
  will-change: opacity, transform;
}

.js-motion [data-reveal].is-in {
  opacity: 1;
  transform: none;
  will-change: auto;
}

/* ---------- 13. 响应式 ---------- */
@media (min-width: 768px) {
  .span-3,
  .span-4,
  .span-5,
  .span-6 { grid-column: span 6; }

  .span-7 { grid-column: span 7; }
  .span-8 { grid-column: span 8; }

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

  .footer-brand { grid-column: 1 / -1; }
}

@media (min-width: 900px) {
  .footer-band {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 1fr));
  }

  .footer-brand { grid-column: auto; }
}

@media (min-width: 1080px) {
  .span-3 { grid-column: span 3; }
  .span-4 { grid-column: span 4; }
  .span-5 { grid-column: span 5; }
  .span-6 { grid-column: span 6; }
  .span-7 { grid-column: span 7; }
  .span-8 { grid-column: span 8; }
  .span-12 { grid-column: span 12; }
}

@media (max-width: 899px) {
  .masthead {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    padding-block: 18px 16px;
  }

  .masthead__vertical,
  .masthead__aside { display: none; }

  .header-rule__note { display: none; }

  .nav__inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
  }

  .nav__toggle { display: flex; }

  .nav__list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 4px 12px;
    overflow-x: visible;
  }

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

  .nav__link {
    justify-content: flex-start;
    padding: 14px 4px;
    border-bottom: 1px solid var(--line-soft);
  }

  .nav__link::after {
    left: 4px;
    right: 4px;
    bottom: 6px;
  }

  .nav__item:last-child .nav__link { border-bottom: 0; }
}

@media (max-width: 560px) {
  .footer-band__list { grid-template-columns: minmax(0, 1fr); }

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

  .btn { width: 100%; }

  .footer-band__cta { width: auto; }
}

/* ---------- 14. 减弱动效 ---------- */
@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;
  }

  .js-motion [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .card:hover { transform: none; }
  .btn:active { transform: none; }
}