/* ============================================================
   环球体育主站 — 共享样式 /assets/site.css
   1 重置 2 变量 3 基础 4 头部 5 页脚 6 通用组件 7 响应式 8 动效偏好
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background-color: #05080F;
}

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

ul, ol { margin: 0; padding: 0; }
ul[class], ol[class] { list-style: none; }

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

button { font: inherit; color: inherit; background: none; border: 0; }
input, textarea, select { font: inherit; }

a { text-decoration: none; }

[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --ink: #05080F;
  --night: #0B1628;
  --slate: #142238;
  --fog: #EAF2F5;
  --haze: #8FA3B8;
  --cyan: #39FFC4;
  --orange: #FF7A18;
  --magenta: #FF3D8D;
  --paper: #F1E7D8;
  --paper-ink: #0B1628;
  --glass: rgba(20, 40, 66, 0.55);
  --glass-deep: rgba(5, 8, 15, 0.96);
  --line: rgba(120, 160, 200, 0.18);
  --line-strong: rgba(120, 160, 200, 0.34);

  /* 字体 */
  --font-head: "Barlow Condensed", "PingFang SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 尺寸 */
  --shell: min(1240px, 100% - 2.5rem);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --head-h: 72px;
}

/* ---------- 3. 基础 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.78;
  letter-spacing: 0.01em;
  color: var(--fog);
  background-color: var(--ink);
  background-image:
    radial-gradient(120% 90% at 88% -10%, rgba(57, 255, 196, 0.13), transparent 55%),
    radial-gradient(90% 80% at -10% 72%, rgba(255, 122, 24, 0.11), transparent 55%),
    linear-gradient(118deg, transparent 49.6%, rgba(120, 160, 200, 0.07) 49.8%, transparent 50.2%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--fog);
}

h1 { font-size: clamp(2.3rem, 6vw, 4.3rem); margin-bottom: 0.42em; }
h2 { font-size: clamp(1.65rem, 3.4vw, 2.55rem); margin-bottom: 0.6em; }
h3 { font-size: clamp(1.16rem, 2.1vw, 1.55rem); margin-bottom: 0.7em; }
h4 { font-size: 1.02rem; margin-bottom: 0.7em; letter-spacing: 0.02em; }

p { margin-bottom: 1.1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--cyan); transition: color 0.18s var(--ease); }
a:hover { color: var(--fog); }

strong { font-weight: 700; }

#main-content { scroll-margin-top: 96px; display: block; }

/* 跳转链接 */
.skip-link {
  position: absolute;
  top: -120%;
  left: 1rem;
  z-index: 300;
  padding: 0.72rem 1.15rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 0 0 10px 10px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 0; color: var(--ink); }

/* ---------- 4. 头部 ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(5, 8, 15, 0.97), rgba(11, 22, 40, 0.86) 64%, rgba(11, 22, 40, 0.74));
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
}

.masthead__inner {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: var(--head-h);
  padding-block: 0.85rem;
}

.masthead__lead {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  min-width: 0;
  flex: 0 1 auto;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  flex: none;
  color: var(--fog);
  font-family: var(--font-head);
}
.brand:hover { color: var(--fog); }

.brand__mark {
  position: relative;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 9px;
  background: linear-gradient(148deg, var(--cyan) 0%, var(--orange) 62%, var(--magenta) 100%);
  box-shadow: inset 0 0 0 1px rgba(234, 242, 245, 0.22);
}
.brand__mark::after {
  content: "";
  position: absolute;
  inset: 9px 8px 9px 10px;
  background: var(--ink);
  clip-path: polygon(0 0, 100% 42%, 0 100%);
}

.brand__name {
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  white-space: nowrap;
}

/* 状态胶囊 */
.statusbar { position: relative; display: inline-flex; align-items: center; }

.statusbar__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.68rem 0.3rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  color: var(--fog);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}
.statusbar__toggle:hover { border-color: var(--line-strong); background: rgba(20, 40, 66, 0.78); }

.statusbar__dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(57, 255, 196, 0.55);
  animation: sb-pulse 2.8s var(--ease) infinite;
}

@keyframes sb-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(57, 255, 196, 0.5); }
  55% { box-shadow: 0 0 0 7px rgba(57, 255, 196, 0); }
}

.statusbar__short {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--haze);
}

.statusbar__detail {
  position: absolute;
  top: calc(100% + 0.62rem);
  left: 0;
  z-index: 40;
  width: max(250px, 21rem);
  max-width: 78vw;
  padding: 0.85rem 1rem;
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--haze);
  background: rgba(11, 22, 40, 0.97);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  box-shadow: 0 22px 46px rgba(0, 0, 0, 0.62);
}

/* 导航 + CTA 容器 */
.masthead__trail {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-width: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav__link {
  position: relative;
  display: block;
  padding: 0.5rem 0.68rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--haze);
  white-space: nowrap;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}
.nav__link:hover { color: var(--fog); background: rgba(143, 163, 184, 0.1); }
.nav__link[aria-current="page"] { color: var(--cyan); }
.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0.68rem;
  right: 0.68rem;
  bottom: 0.12rem;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.masthead__cta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: none;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.62rem 1.05rem;
  border: 1px solid transparent;
  border-radius: 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.88rem;
  letter-spacing: 0.07em;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.btn:hover { transform: translateY(-1px); }

.btn--primary {
  background: var(--orange);
  color: var(--ink);
  box-shadow: 0 10px 26px rgba(255, 122, 24, 0.26);
}
.btn--primary:hover { background: #FF9345; color: var(--ink); }

.btn--ghost {
  background: transparent;
  color: var(--fog);
  border-color: var(--line-strong);
}
.btn--ghost:hover { color: var(--cyan); border-color: var(--cyan); }

/* 移动菜单按钮 */
.navtoggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.78rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--glass);
  color: var(--fog);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  cursor: pointer;
}
.navtoggle:hover { border-color: var(--line-strong); }

.navtoggle__bars { display: grid; gap: 4px; width: 18px; flex: none; }
.navtoggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(2) { opacity: 0; }
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 5. 页脚 ---------- */
.sitefoot {
  position: relative;
  margin-top: clamp(4rem, 9vw, 7.5rem);
  background: linear-gradient(180deg, rgba(11, 22, 40, 0.62), rgba(5, 8, 15, 0.99) 42%);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.sitefoot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange) 46%, var(--magenta) 72%, transparent 100%);
  opacity: 0.75;
}
.sitefoot::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(57, 255, 196, 0.05) 0 1px, transparent 1px 84px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 62%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 62%);
}

.sitefoot__inner {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin-inline: auto;
  padding-block: clamp(2.6rem, 6vw, 4.5rem) 1.8rem;
}

.sitefoot__top {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.25fr);
  gap: clamp(1.5rem, 3.4vw, 3rem);
}

.sitefoot__brand { min-width: 0; }

.brand--foot { margin-bottom: 1rem; }

.sitefoot__note {
  font-size: 0.9rem;
  color: var(--fog);
  margin-bottom: 0.5rem;
}

.sitefoot__hint {
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--haze);
  max-width: 26ch;
  padding-left: 0.85rem;
  border-left: 2px solid rgba(57, 255, 196, 0.5);
}

.sitefoot__col { min-width: 0; }

.sitefoot__title {
  font-family: var(--font-head);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--haze);
  margin: 0 0 0.95rem;
}

.sitefoot__list {
  display: grid;
  gap: 0.6rem;
}

.sitefoot__link {
  position: relative;
  display: inline-block;
  font-size: 0.9rem;
  color: var(--fog);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}
.sitefoot__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width 0.22s var(--ease);
}
.sitefoot__link:hover { color: var(--cyan); transform: translateX(2px); }
.sitefoot__link:hover::after { width: 100%; }

.sitefoot__list--meta li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.75;
  color: var(--haze);
  word-break: break-word;
}
.sitefoot__list--meta li:first-child { color: var(--fog); }

.sitefoot__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem 1.75rem;
  margin-top: clamp(2rem, 5vw, 3.2rem);
  padding-top: 1.3rem;
  border-top: 1px solid var(--line);
}

.sitefoot__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 1.4rem;
}
.sitefoot__legal .sitefoot__link { font-size: 0.82rem; color: var(--haze); }
.sitefoot__legal .sitefoot__link:hover { color: var(--cyan); }

.sitefoot__copy {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  color: var(--haze);
  margin: 0;
}
.sitefoot__icp { color: rgba(143, 163, 184, 0.82); }

/* ---------- 6. 通用组件 ---------- */
.shell {
  width: var(--shell);
  margin-inline: auto;
}
.shell--narrow { max-width: 760px; }

.prose {
  max-width: 68ch;
  font-size: 1.03rem;
  line-height: 1.85;
  color: var(--fog);
}
.prose > p + p { margin-top: 1.05em; }
.prose ul, .prose ol { margin: 0 0 1.1em; padding-left: 1.35em; }
.prose li + li { margin-top: 0.45em; }
.prose a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--fog); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
}

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

/* 网格 */
.grid { display: grid; gap: clamp(1rem, 2.2vw, 1.6rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 232px), 1fr)); }
.grid--bento { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* 面板 */
.panel {
  position: relative;
  padding: clamp(1.15rem, 2.4vw, 1.9rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--glass);
  -webkit-backdrop-filter: blur(12px) saturate(130%);
  backdrop-filter: blur(12px) saturate(130%);
}
.panel--solid {
  background: var(--night);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.panel--paper {
  background: var(--paper);
  color: var(--paper-ink);
  border-color: rgba(11, 22, 40, 0.16);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.panel--paper h2, .panel--paper h3, .panel--paper h4, .panel--paper p, .panel--paper li { color: var(--paper-ink); }
.panel--paper a { color: #0E4E42; }
.panel--paper a:hover { color: var(--ink); }

/* 图片容器 */
.media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background-color: var(--slate);
  background-image:
    repeating-linear-gradient(115deg, rgba(57, 255, 196, 0.12) 0 1px, transparent 1px 18px),
    radial-gradient(120% 120% at 14% 8%, rgba(57, 255, 196, 0.2), transparent 55%),
    radial-gradient(120% 120% at 92% 92%, rgba(255, 122, 24, 0.2), transparent 55%),
    linear-gradient(160deg, var(--slate), var(--ink));
}
.media > img,
.media > video,
.media > picture,
.media > picture > img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(105deg, rgba(5, 8, 15, 0.55) 0%, transparent 46%, rgba(5, 8, 15, 0.3) 100%);
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.18rem 0.62rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.6;
}
.tag--cyan { color: var(--cyan); }
.tag--orange { color: var(--orange); }
.tag--magenta { color: var(--magenta); }

/* 数据牌 */
.stat { display: flex; flex-direction: column; gap: 0.3rem; }
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 4.2vw, 2.9rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--haze);
}

/* 面包屑 */
.breadcrumb { margin-bottom: clamp(1rem, 2vw, 1.6rem); }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--haze);
}
.breadcrumb__link { color: var(--haze); }
.breadcrumb__link:hover { color: var(--cyan); }
.breadcrumb__sep { color: rgba(143, 163, 184, 0.45); }
.breadcrumb__current { color: var(--fog); }

/* 折叠内容组 */
.disclosure {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(20, 40, 66, 0.4);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}
.disclosure + .disclosure { margin-top: 0.6rem; }
.disclosure[data-open="true"] {
  border-color: rgba(57, 255, 196, 0.45);
  background: rgba(20, 40, 66, 0.68);
}

.disclosure__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  text-align: left;
  color: var(--fog);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: color 0.18s var(--ease);
}
.disclosure__trigger:hover { color: var(--cyan); }

.disclosure__label { display: block; }

.disclosure__icon {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}
.disclosure__icon::before,
.disclosure__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transform: translateY(-50%);
  transition: transform 0.22s var(--ease);
}
.disclosure__icon::after { transform: translateY(-50%) rotate(90deg); }
.disclosure[data-open="true"] .disclosure__icon::after { transform: translateY(-50%) rotate(0deg); }

.disclosure__panel {
  padding: 0 1.15rem 1.15rem;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--haze);
}

/* 滚动进度条（JS 注入） */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  height: 3px;
  width: 0;
  pointer-events: none;
  background: linear-gradient(90deg, var(--cyan), var(--orange) 62%, var(--magenta));
  transition: width 0.15s linear;
}

/* 滚动锁 */
html[data-nav-lock="true"],
html[data-nav-lock="true"] body { overflow: hidden; }

/* ---------- 7. 响应式 ---------- */
@media (max-width: 1280px) {
  .nav__link { padding: 0.5rem 0.55rem; font-size: 0.86rem; }
  .masthead__cta .btn--ghost { display: none; }
}

@media (max-width: 1120px) {
  .statusbar__short { display: none; }
  .statusbar__toggle { padding: 0.34rem; }
  .statusbar__detail { left: auto; right: 0; }
}

@media (max-width: 1040px) {
  :root { --head-h: 62px; }

  .masthead__inner { gap: 0.8rem; padding-block: 0.65rem; }
  .masthead__lead { gap: 0.75rem; }

  .navtoggle { display: inline-flex; }

  .masthead__trail {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.5rem;
    max-height: calc(100vh - var(--head-h) - 1rem);
    overflow-y: auto;
    background: rgba(5, 8, 15, 0.985);
    border-bottom: 1px solid var(--line-strong);
    box-shadow: 0 26px 54px rgba(0, 0, 0, 0.65);
  }
  .masthead__trail[data-open="true"] { display: flex; }

  .nav__list { flex-direction: column; align-items: stretch; gap: 0.1rem; }
  .nav__item { width: 100%; }
  .nav__link {
    padding: 0.82rem 0.5rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(143, 163, 184, 0.12);
    border-radius: 0;
  }
  .nav__link[aria-current="page"]::after { display: none; }
  .nav__link[aria-current="page"] { background: rgba(57, 255, 196, 0.07); }

  .masthead__cta {
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
    margin-top: 1.1rem;
  }
  .masthead__cta .btn { width: 100%; }
  .masthead__cta .btn--ghost { display: inline-flex; }
}

@media (max-width: 900px) {
  .sitefoot__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sitefoot__brand { grid-column: 1 / -1; }
  .sitefoot__hint { max-width: none; }
}

@media (max-width: 620px) {
  :root { --shell: min(1240px, 100% - 1.6rem); }

  body { font-size: 15.5px; line-height: 1.75; }
  .brand__name { font-size: 1.08rem; letter-spacing: 0.06em; }
  .brand__mark { width: 30px; height: 30px; }

  .sitefoot__top { grid-template-columns: minmax(0, 1fr); gap: 1.6rem; }
  .sitefoot__bottom { flex-direction: column; align-items: flex-start; }
  .sitefoot__hint { max-width: none; }

  .disclosure__trigger { font-size: 0.94rem; padding: 0.9rem 0.95rem; }
  .disclosure__panel { padding: 0 0.95rem 1rem; }

  .statusbar__detail { width: min(78vw, 20rem); }
}

/* ---------- 8. 动效偏好 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .statusbar__dot { animation: none; box-shadow: 0 0 0 3px rgba(57, 255, 196, 0.22); }
  .btn:hover { transform: none; }
  .sitefoot__link:hover { transform: none; }
}