/* ==========================================================================
   /assets/site.css — 亚星游戏CN站 共享外壳
   夜间球场指挥台：深墨绿底 + 荧光青状态 + 暖橙强调 + 纸张面板
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 18px);
}

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;
}

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

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

/* ---------- 2. Tokens ---------- */
:root {
  --pitch-950: #061411;
  --pitch-900: #0a201a;
  --pitch-800: #10352b;
  --mint-400: #6ef2c8;
  --mint-200: #b9ffe9;
  --amber-400: #ffb547;
  --amber-200: #ffd79a;
  --paper-100: #f3f1e7;
  --ink-700: #1b2a24;
  --slate-400: #8aa39a;
  --line-600: #2d4a40;
  --alert-500: #ff6b5e;

  --font-display: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: var(--font-display);
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Consolas",
    "Liberation Mono", "Courier New", monospace;
  --font-cond: "Barlow Condensed", "Oswald", "Noto Sans SC", "PingFang SC",
    sans-serif;

  --space-1: 0.35rem;
  --space-2: 0.6rem;
  --space-3: 0.9rem;
  --space-4: 1.35rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;

  --radius-s: 3px;
  --radius-m: 6px;
  --radius-l: 10px;

  --shadow-panel: 0 18px 44px rgba(0, 0, 0, 0.42);
  --shadow-lift: 0 14px 34px rgba(6, 20, 17, 0.62);
  --ease: cubic-bezier(0.22, 0.7, 0.3, 1);

  --wrap: 1280px;
  --header-h: 72px;

  color-scheme: dark;
}

/* ---------- 3. Base / 中文排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--paper-100);
  background-color: var(--pitch-950);
  background-image:
    radial-gradient(1100px 520px at 10% -12%, rgba(110, 242, 200, 0.11), transparent 62%),
    radial-gradient(900px 480px at 94% -4%, rgba(255, 181, 71, 0.08), transparent 64%),
    repeating-linear-gradient(
      90deg,
      rgba(243, 241, 231, 0.028) 0 2px,
      transparent 2px 84px
    );
  background-repeat: no-repeat, no-repeat, repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

::selection {
  background: var(--mint-400);
  color: var(--pitch-950);
}

:focus-visible {
  outline: 2px solid var(--mint-200);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 4. 通用布局 ---------- */
.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

.site-main {
  display: block;
}

.section {
  padding-block: var(--space-6);
}

.stack {
  display: grid;
  gap: var(--space-3);
}

.grid {
  display: grid;
  gap: var(--space-4);
}

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

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

/* ---------- 5. 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint-400);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  flex: 0 0 auto;
  background: var(--amber-400);
}

.page-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 1.2rem + 3vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.section-title {
  font-weight: 700;
  font-size: clamp(1.4rem, 1.05rem + 1vw, 2rem);
  line-height: 1.26;
}

.prose {
  max-width: 68ch;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #dde7e1;
}

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

.prose h2 {
  margin-top: 1.6em;
  margin-bottom: 0.5em;
}

/* ---------- 6. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--slate-400);
}

.breadcrumb a {
  color: var(--slate-400);
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.breadcrumb a:hover {
  color: var(--mint-200);
  border-bottom-color: var(--mint-400);
}

.breadcrumb [aria-current="page"] {
  color: var(--paper-100);
}

.breadcrumb__sep {
  color: var(--line-600);
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.62rem 1.05rem;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease), transform 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}

.btn--sm {
  padding: 0.42rem 0.8rem;
  font-size: 0.82rem;
}

.btn--primary {
  background: var(--mint-400);
  color: var(--pitch-950);
  box-shadow: 0 10px 24px rgba(110, 242, 200, 0.18);
}

.btn--primary:hover {
  background: var(--mint-200);
  transform: translateY(-1px);
}

.btn--accent {
  background: var(--amber-400);
  color: var(--pitch-950);
  box-shadow: 0 10px 24px rgba(255, 181, 71, 0.18);
}

.btn--accent:hover {
  background: var(--amber-200);
  transform: translateY(-1px);
}

.btn--ghost {
  background: rgba(16, 53, 43, 0.55);
  border-color: var(--line-600);
  color: var(--paper-100);
}

.btn--ghost:hover {
  border-color: var(--mint-400);
  color: var(--mint-200);
  transform: translateY(-1px);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
}

/* ---------- 8. 标签 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.22rem 0.55rem;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-s);
  background: rgba(16, 53, 43, 0.6);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--slate-400);
}

.chip--mint {
  border-color: rgba(110, 242, 200, 0.45);
  background: rgba(110, 242, 200, 0.1);
  color: var(--mint-200);
}

.chip--amber {
  border-color: rgba(255, 181, 71, 0.45);
  background: rgba(255, 181, 71, 0.12);
  color: var(--amber-200);
}

/* ---------- 9. 面板卡片 ---------- */
.card {
  position: relative;
  padding: var(--space-4);
  background: var(--pitch-800);
  border: 1px solid var(--line-600);
  border-radius: var(--radius-m);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}

.card--flat {
  background: rgba(10, 32, 26, 0.72);
}

.card--paper {
  background: linear-gradient(180deg, #fbf9f1, var(--paper-100));
  border-color: #dad5c4;
  color: var(--ink-700);
  box-shadow: var(--shadow-panel);
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--slate-400);
}

.card__note {
  font-size: 0.9rem;
  color: var(--slate-400);
}

.card--paper .card__meta,
.card--paper .card__note {
  color: #5c6b63;
}

/* ---------- 10. 图片容器基础规则 ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  isolation: isolate;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-m);
  background-color: var(--pitch-800);
  background-image:
    repeating-linear-gradient(
      90deg,
      rgba(243, 241, 231, 0.05) 0 8px,
      transparent 8px 22px
    ),
    radial-gradient(120% 90% at 18% 0%, rgba(110, 242, 200, 0.22), transparent 58%),
    radial-gradient(90% 80% at 92% 100%, rgba(255, 181, 71, 0.16), transparent 60%);
}

.media > img,
.media > picture > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--wide {
  aspect-ratio: 21 / 9;
}

.media--square {
  aspect-ratio: 1 / 1;
}

.media--tall {
  aspect-ratio: 3 / 4;
}

.media__tag {
  position: absolute;
  left: 0.6rem;
  bottom: 0.6rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
  padding: 0.2rem 0.5rem;
  border: 1px solid rgba(110, 242, 200, 0.35);
  border-radius: var(--radius-s);
  background: rgba(6, 20, 17, 0.82);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--mint-200);
}

/* ---------- 11. Skip link ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 1rem;
  z-index: 200;
  padding: 0.7rem 1.05rem;
  border-radius: 0 0 var(--radius-s) var(--radius-s);
  background: var(--mint-400);
  color: var(--pitch-950);
  font-weight: 700;
  transition: top 0.18s var(--ease);
}

.skip-link:focus-visible {
  top: 0;
  outline: 2px solid var(--paper-100);
  outline-offset: 2px;
}

/* ==========================================================================
   头部：紧凑命令栏
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  border-bottom: 1px solid var(--line-600);
  background: linear-gradient(
    180deg,
    rgba(6, 20, 17, 0.97) 0%,
    rgba(8, 26, 21, 0.93) 100%
  );
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  backdrop-filter: blur(12px) saturate(120%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2.5rem, var(--wrap));
  min-height: var(--header-h);
  margin-inline: auto;
  padding-block: 0.65rem;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  overflow: hidden;
  border-radius: var(--radius-s);
  background: linear-gradient(
    150deg,
    var(--mint-400) 0%,
    #1c8f74 55%,
    var(--pitch-800) 100%
  );
  color: var(--pitch-950);
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(6, 20, 17, 0.35),
    0 0 18px rgba(110, 242, 200, 0.28);
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    115deg,
    rgba(6, 20, 17, 0.18) 0 3px,
    transparent 3px 9px
  );
}

.brand__text {
  display: block;
  min-width: 0;
}

.brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--paper-100);
}

.brand__tagline {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.09em;
  color: var(--slate-400);
  white-space: nowrap;
}

.brand--footer .brand__mark {
  width: 38px;
  height: 38px;
  font-size: 1rem;
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.52rem 0.8rem;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-s);
  background: rgba(16, 53, 43, 0.7);
  color: var(--paper-100);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.nav-toggle:hover {
  border-color: var(--mint-400);
  color: var(--mint-200);
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--mint-400);
  transition: background-color 0.2s var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--mint-400);
  transition: transform 0.22s var(--ease), top 0.22s var(--ease);
}

.nav-toggle__bars::before {
  top: -6px;
}

.nav-toggle__bars::after {
  top: 6px;
}

.site-header[data-open] .nav-toggle__bars {
  background: transparent;
}

.site-header[data-open] .nav-toggle__bars::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header[data-open] .nav-toggle__bars::after {
  top: 0;
  transform: rotate(-45deg);
}

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  counter-reset: nav-item;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.5rem 0.6rem;
  border-radius: var(--radius-s);
  font-size: 0.93rem;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--paper-100);
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.site-nav__link::before {
  counter-increment: nav-item;
  content: counter(nav-item, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--slate-400);
  transition: color 0.18s var(--ease);
}

.site-nav__link:hover {
  background: rgba(110, 242, 200, 0.09);
  color: var(--mint-200);
}

.site-nav__link:hover::before {
  color: var(--mint-200);
}

.site-nav__link[aria-current="page"] {
  background: rgba(110, 242, 200, 0.12);
  color: var(--mint-400);
}

.site-nav__link[aria-current="page"]::before {
  color: var(--amber-400);
}

.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0.6rem;
  right: 0.6rem;
  bottom: 0.2rem;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--mint-400), var(--amber-400));
}

.site-nav__state {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.32rem 0.65rem 0.32rem 0.5rem;
  border: 1px solid var(--line-600);
  border-radius: 999px;
  background: rgba(16, 53, 43, 0.55);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--slate-400);
  white-space: nowrap;
}

.site-nav__dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint-400);
  box-shadow: 0 0 8px var(--mint-400);
}

/* 阅读进度轨 */
.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  overflow: hidden;
  background: rgba(45, 74, 64, 0.55);
}

.header-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--mint-400) 0%,
    var(--mint-200) 55%,
    var(--amber-400) 100%
  );
  box-shadow: 0 0 12px rgba(110, 242, 200, 0.6);
  transition: width 0.12s linear;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: var(--space-7);
  border-top: 1px solid var(--line-600);
  background-color: var(--pitch-900);
  background-image:
    radial-gradient(760px 300px at 88% 0%, rgba(255, 181, 71, 0.07), transparent 70%),
    linear-gradient(180deg, var(--pitch-900) 0%, var(--pitch-950) 72%);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--mint-400),
    var(--amber-400),
    transparent
  );
  opacity: 0.55;
}

.footer-inner {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
  padding-block: var(--space-6) var(--space-4);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 1.4fr;
  gap: var(--space-5) var(--space-4);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--line-600);
}

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

.footer-brand__text {
  max-width: 34ch;
  margin-top: var(--space-3);
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--slate-400);
}

.footer-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: var(--space-3);
}

.footer-chip {
  padding: 0.22rem 0.5rem;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-s);
  background: rgba(110, 242, 200, 0.08);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--mint-200);
}

.footer-title {
  margin-bottom: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--slate-400);
}

.footer-nav,
.footer-legal {
  min-width: 0;
}

.footer-nav__list {
  display: grid;
  gap: 0.1rem;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.32rem 0;
  font-size: 0.95rem;
  color: var(--paper-100);
  transition: color 0.16s var(--ease), transform 0.16s var(--ease);
}

.footer-link::before {
  content: "";
  width: 0;
  height: 1px;
  background: var(--mint-400);
  transition: width 0.2s var(--ease);
}

.footer-link:hover {
  color: var(--mint-200);
  transform: translateX(2px);
}

.footer-link:hover::before {
  width: 12px;
}

.footer-contact {
  display: grid;
  gap: 0.55rem;
  margin-top: var(--space-4);
}

.footer-contact__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-s);
  background: rgba(16, 53, 43, 0.5);
  font-size: 0.88rem;
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--slate-400);
  white-space: nowrap;
}

.footer-contact__value {
  min-width: 0;
  color: var(--paper-100);
  overflow-wrap: anywhere;
}

.copy-btn {
  padding: 0.18rem 0.45rem;
  border: 1px solid rgba(110, 242, 200, 0.35);
  border-radius: var(--radius-s);
  background: rgba(110, 242, 200, 0.1);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--mint-200);
  transition: background-color 0.16s var(--ease), color 0.16s var(--ease),
    border-color 0.16s var(--ease);
}

.copy-btn:hover {
  background: var(--mint-400);
  border-color: var(--mint-400);
  color: var(--pitch-950);
}

.copy-btn[data-copied="true"] {
  background: var(--amber-400);
  border-color: var(--amber-400);
  color: var(--pitch-950);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.4rem;
  padding-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--slate-400);
}

.footer-base__copy {
  color: var(--paper-100);
}

.footer-base__icp {
  padding: 0.16rem 0.5rem;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-s);
  color: var(--slate-400);
}

.footer-base__note {
  margin-left: auto;
}

/* ==========================================================================
   显现动画（仅在有脚本且未开启减弱动效时生效）
   ========================================================================== */
.js-motion [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

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

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1180px) and (min-width: 1001px) {
  .site-nav {
    gap: 0.6rem;
  }

  .site-nav__link {
    padding: 0.45rem 0.45rem;
    font-size: 0.86rem;
  }

  .site-nav__link::before {
    display: none;
  }

  .site-nav__state {
    display: none;
  }
}

@media (max-width: 1000px) {
  :root {
    --header-h: 64px;
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 90;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 0.75rem 1.25rem 1.35rem;
    border-bottom: 1px solid var(--line-600);
    background: linear-gradient(180deg, var(--pitch-900), var(--pitch-950));
    box-shadow: 0 26px 44px rgba(0, 0, 0, 0.55);
  }

  .site-header[data-open] .site-nav {
    display: flex;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.1rem;
  }

  .site-nav__link {
    justify-content: flex-start;
    padding: 0.8rem 0.55rem;
    border-bottom: 1px solid rgba(45, 74, 64, 0.55);
    border-radius: 0;
    font-size: 1rem;
  }

  .site-nav__link::before {
    font-size: 0.68rem;
  }

  .site-nav__link::after,
  .site-nav__link[aria-current="page"]::after {
    display: none;
  }

  .site-nav__link[aria-current="page"] {
    border-bottom-color: rgba(110, 242, 200, 0.45);
  }

  .site-nav__state {
    align-self: flex-start;
    margin-top: 0.15rem;
  }

  .site-nav .btn {
    width: 100%;
    margin-top: 0.2rem;
    justify-content: center;
  }

  .grid--halves,
  .grid--thirds {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 640px) {
  .header-inner,
  .footer-inner {
    width: min(100% - 1.6rem, var(--wrap));
  }

  .brand__mark {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .brand__name {
    font-size: 0.98rem;
  }

  .brand__tagline {
    font-size: 0.62rem;
    letter-spacing: 0.06em;
  }

  .section {
    padding-block: var(--space-5);
  }

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

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .footer-base__note {
    margin-left: 0;
  }

  .media--wide {
    aspect-ratio: 16 / 9;
  }
}

/* ==========================================================================
   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],
  .js-motion [data-reveal].is-in {
    opacity: 1;
    transform: none;
  }

  .btn:hover,
  .footer-link:hover {
    transform: none;
  }
}