/* ============================================================
   威体育赛事 · 共享样式表 /assets/site.css
   深墨蓝基底 · 精密网格 · 青绿信号 · 暖橙标签
   ============================================================ */

/* ---------- 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, hr { margin: 0; }

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

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

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

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

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

i, em { font-style: normal; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  /* 色彩 */
  --ink: #080E1F;
  --ink-2: #0F1830;
  --grid: #1E2A46;
  --cyan: #1B87A6;
  --violet: #5A3B85;
  --signal: #35F0B4;
  --amber: #FF8B3D;
  --paper: #E9EFF8;
  --mute: #8DA0BE;
  --warn: #FFC94D;
  --body-text: #D5DEED;

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

  /* 尺度 */
  --head-h: 78px;
  --dock-h: 54px;
  --shell-max: 1480px;
  --gutter: clamp(16px, 3vw, 40px);
  --radius-pod: 999px;
  --radius-soft: 14px;

  /* 节奏 */
  --t-hover: 240ms;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

@media (min-width: 1081px) {
  :root { --head-h: 84px; }
}

/* ---------- 3. 全局版式与背景肌理 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  padding-top: var(--head-h);
  padding-bottom: var(--dock-h);
  overflow-x: hidden;
}

/* 精密网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(30, 42, 70, .9) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 42, 70, .9) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: .34;
}

/* 顶部与右侧的氛围光 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 460px at 10% -10%, rgba(27, 135, 166, .22), transparent 62%),
    radial-gradient(720px 420px at 94% 2%, rgba(90, 59, 133, .24), transparent 64%);
}

#main-content,
.site-footer {
  position: relative;
  z-index: 1;
}

/* 中文排版基调 */
h1, h2, h3, .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--paper);
}

h1 { font-size: clamp(40px, 6vw, 76px); line-height: 1.02; }
h2 { font-size: clamp(28px, 3.6vw, 44px); }
h3 { font-size: clamp(19px, 2vw, 24px); font-weight: 700; }

::selection {
  background: rgba(53, 240, 180, .28);
  color: var(--paper);
}

/* 焦点环 */
:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 3px;
}

.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. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  left: 18px;
  top: -72px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--radius-pod);
  background: var(--signal);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: 0 12px 28px rgba(0, 0, 0, .5);
  transition: top 180ms var(--ease);
}

.skip-link:focus {
  top: 14px;
}

/* ---------- 5. 悬浮页头 ---------- */
.masthead {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  padding: 10px var(--gutter);
  background: linear-gradient(180deg,
      rgba(8, 14, 31, .96) 0%,
      rgba(8, 14, 31, .74) 62%,
      rgba(8, 14, 31, 0) 100%);
  transition: padding var(--t-hover) var(--ease);
}

.masthead[data-condensed="true"] {
  padding-top: 6px;
  padding-bottom: 6px;
}

.masthead__inner {
  max-width: var(--shell-max);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

/* 浮岛胶囊 */
.pod {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.1vw, 16px);
  min-height: 50px;
  padding: 6px 10px 6px 16px;
  border: 1px solid var(--grid);
  border-radius: var(--radius-pod);
  background: linear-gradient(120deg, rgba(15, 24, 48, .88), rgba(8, 14, 31, .88));
  box-shadow: 0 12px 32px rgba(0, 0, 0, .45);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
  transition: border-color var(--t-hover) var(--ease), box-shadow var(--t-hover) var(--ease);
}

.pod:hover {
  border-color: rgba(27, 135, 166, .55);
  box-shadow: 0 16px 38px rgba(0, 0, 0, .55);
}

.pod--nav {
  position: relative;
  flex: 0 1 auto;
  min-width: 0;
}

.pod--telemetry {
  flex: 0 0 auto;
  gap: 12px;
  padding: 6px 8px 6px 14px;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex: 0 0 auto;
}

.brand__mark {
  position: relative;
  padding-bottom: 3px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: .01em;
  color: var(--paper);
  white-space: nowrap;
}

.brand__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--signal));
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--mute);
  white-space: nowrap;
}

/* 主导航 */
.capsule-nav {
  min-width: 0;
}

.capsule-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.capsule-nav__link {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-pod);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--mute);
  white-space: nowrap;
  transition: color var(--t-hover) var(--ease),
              background var(--t-hover) var(--ease),
              transform var(--t-hover) var(--ease);
}

.capsule-nav__link:hover {
  color: var(--paper);
  background: linear-gradient(120deg, rgba(27, 135, 166, .3), rgba(90, 59, 133, .34));
  transform: translateY(-1px);
}

.capsule-nav__link[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
  background: linear-gradient(120deg, var(--signal), #7CF0C9);
  box-shadow: 0 6px 18px rgba(53, 240, 180, .2);
}

/* 移动端栏目按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 14px 8px 13px;
  border: 1px solid var(--grid);
  border-radius: var(--radius-pod);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  transition: border-color var(--t-hover) var(--ease), background var(--t-hover) var(--ease);
}

.nav-toggle:hover {
  border-color: var(--cyan);
  background: rgba(27, 135, 166, .14);
}

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 16px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 1px;
  background: var(--signal);
  transition: transform var(--t-hover) var(--ease);
}

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

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

/* 遥测数据区 */
.telemetry__pulse {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  animation: telemetry-flow 6s var(--ease) infinite;
}

@keyframes telemetry-flow {
  0%, 70%, 100% { box-shadow: 0 0 0 0 rgba(53, 240, 180, .55); }
  80% { box-shadow: 0 0 0 8px rgba(53, 240, 180, 0); }
}

.telemetry__item {
  display: flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
}

.telemetry__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mute);
}

.telemetry__value {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--paper);
}

.telemetry__value--num {
  color: var(--amber);
  font-weight: 600;
}

/* 头像下拉 */
.account {
  position: relative;
  flex: 0 0 auto;
}

.account__trigger {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  list-style: none;
  cursor: pointer;
  border: 1px solid var(--grid);
  border-radius: 50%;
  background: linear-gradient(140deg, rgba(27, 135, 166, .3), rgba(90, 59, 133, .45));
  transition: border-color var(--t-hover) var(--ease), transform var(--t-hover) var(--ease);
}

.account__trigger::-webkit-details-marker { display: none; }

.account__trigger:hover {
  border-color: var(--cyan);
  transform: translateY(-1px);
}

.account[open] .account__trigger {
  border-color: var(--signal);
}

.account__avatar {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  color: var(--paper);
}

.account__menu {
  position: absolute;
  right: 0;
  top: calc(100% + 12px);
  z-index: 5;
  min-width: 196px;
  display: grid;
  gap: 2px;
  padding: 8px;
  border: 1px solid var(--grid);
  border-radius: var(--radius-soft);
  background: rgba(10, 17, 35, .98);
  box-shadow: 0 24px 48px rgba(0, 0, 0, .6);
}

.account__menu::before {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--signal), var(--violet));
}

.account__item {
  display: block;
  padding: 9px 12px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--paper);
  transition: background var(--t-hover) var(--ease), color var(--t-hover) var(--ease);
}

.account__item:hover {
  color: var(--signal);
  background: rgba(27, 135, 166, .2);
}

/* 滚动进度 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 95;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--signal) 55%, var(--amber));
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  margin-top: clamp(56px, 9vw, 120px);
  border-top: 1px solid var(--grid);
  background: linear-gradient(180deg,
      rgba(15, 24, 48, 0) 0%,
      rgba(15, 24, 48, .92) 22%,
      rgba(8, 14, 31, 1) 100%);
  padding: clamp(40px, 6vw, 76px) var(--gutter) clamp(24px, 4vw, 44px);
}

.footer__inner {
  max-width: var(--shell-max);
  margin-inline: auto;
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(240px, 1.5fr) repeat(3, minmax(140px, 1fr));
  gap: clamp(24px, 4vw, 64px);
  padding-bottom: clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--grid);
}

.footer__brandmark {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--paper);
}

.footer__tagline {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--signal);
}

.footer__note {
  margin-top: 18px;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute);
}

.footer__coltitle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber);
}

.footer__coltitle::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--grid);
}

.footer__list {
  display: grid;
  gap: 2px;
}

.footer__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 0;
  font-size: 14px;
  color: var(--mute);
  transition: color var(--t-hover) var(--ease), transform var(--t-hover) var(--ease);
}

.footer__link::before {
  content: "";
  width: 10px;
  height: 1px;
  background: var(--grid);
  transition: width var(--t-hover) var(--ease), background var(--t-hover) var(--ease);
}

.footer__link:hover {
  color: var(--paper);
  transform: translateX(4px);
}

.footer__link:hover::before {
  width: 20px;
  background: var(--signal);
}

.footer__baseline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 32px;
  padding-top: 22px;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mute);
}

.footer__sep {
  color: var(--grid);
}

.footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  font-size: 13px;
  color: var(--mute);
}

.footer__contactline {
  white-space: nowrap;
}

/* 固定新人入口条 */
.newcomer-dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  border-top: 1px solid var(--grid);
  background: linear-gradient(90deg,
      rgba(8, 14, 31, .97) 0%,
      rgba(15, 24, 48, .97) 48%,
      rgba(8, 14, 31, .97) 100%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.newcomer-dock__inner {
  max-width: var(--shell-max);
  margin-inline: auto;
  min-height: var(--dock-h);
  padding: 8px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.newcomer-dock__text {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 13px;
  color: var(--mute);
}

.newcomer-dock__tag {
  flex: 0 0 auto;
  padding: 2px 10px;
  border: 1px solid rgba(255, 139, 61, .42);
  border-radius: var(--radius-pod);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--amber);
  white-space: nowrap;
}

.newcomer-dock__copy {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 7. 通用组件 ---------- */
.shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.shell--narrow {
  max-width: 920px;
}

.section {
  padding-block: clamp(40px, 6vw, 88px);
}

.rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--cyan), var(--grid) 42%, transparent);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mute);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--signal);
}

/* 网格 */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 32px);
}

.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-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 22px;
  border: 1px solid var(--grid);
  border-radius: var(--radius-pod);
  background: rgba(15, 24, 48, .72);
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .03em;
  white-space: nowrap;
  transition: border-color var(--t-hover) var(--ease),
              transform var(--t-hover) var(--ease),
              box-shadow var(--t-hover) var(--ease),
              color var(--t-hover) var(--ease);
}

.btn:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, .45);
}

.btn--primary {
  border-color: transparent;
  background: linear-gradient(120deg, var(--amber), #FFB169);
  color: var(--ink);
  font-weight: 700;
}

.btn--primary:hover {
  box-shadow: 0 14px 30px rgba(255, 139, 61, .3);
}

.btn--ghost {
  background: transparent;
}

.btn--sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* 面包屑 */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mute);
}

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

.breadcrumb__link {
  transition: color var(--t-hover) var(--ease);
}

.breadcrumb__link:hover {
  color: var(--signal);
}

.breadcrumb__sep {
  color: var(--grid);
}

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

/* 正文 */
.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-text);
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 {
  margin-top: 2.2em;
  font-size: clamp(26px, 3vw, 38px);
  color: var(--paper);
}

.prose h3 {
  margin-top: 1.8em;
  color: var(--paper);
}

.prose a {
  color: var(--signal);
  border-bottom: 1px solid rgba(53, 240, 180, .38);
  transition: border-color var(--t-hover) var(--ease);
}

.prose a:hover {
  border-color: var(--signal);
}

.prose ul li {
  position: relative;
  padding-left: 20px;
  margin-top: .5em;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .8em;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

.prose strong { color: var(--paper); }

/* 数据数字 */
.kpi {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.kpi__value {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--signal);
}

.kpi__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mute);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 11px;
  border: 1px solid var(--grid);
  border-radius: var(--radius-pod);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mute);
  white-space: nowrap;
}

.tag--amber {
  color: var(--amber);
  border-color: rgba(255, 139, 61, .42);
  background: rgba(255, 139, 61, .1);
}

.tag--cyan {
  color: #6FD3EC;
  border-color: rgba(27, 135, 166, .5);
  background: rgba(27, 135, 166, .14);
}

.tag--violet {
  color: #B99CE4;
  border-color: rgba(90, 59, 133, .62);
  background: rgba(90, 59, 133, .22);
}

.tag--signal {
  color: var(--signal);
  border-color: rgba(53, 240, 180, .4);
  background: rgba(53, 240, 180, .1);
}

/* 横向滚动条带 */
.h-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--grid) transparent;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 20px, #000 calc(100% - 20px), transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 20px, #000 calc(100% - 20px), transparent 100%);
}

.h-scroll > * {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.h-scroll::-webkit-scrollbar { height: 4px; }
.h-scroll::-webkit-scrollbar-track { background: transparent; }
.h-scroll::-webkit-scrollbar-thumb {
  background: var(--grid);
  border-radius: 2px;
}

/* 表格 */
.data-table {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 14px;
}

.data-table th {
  padding: 10px 12px;
  text-align: left;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mute);
  border-bottom: 1px solid var(--grid);
  white-space: nowrap;
}

.data-table td {
  padding: 12px;
  color: var(--body-text);
  border-bottom: 1px solid rgba(30, 42, 70, .7);
}

.data-table tbody tr:nth-child(even) {
  background: rgba(15, 24, 48, .55);
}

.data-table tbody tr {
  transition: background var(--t-hover) var(--ease);
}

.data-table tbody tr:hover {
  background: rgba(27, 135, 166, .14);
}

.data-table .num {
  color: var(--signal);
  font-weight: 600;
}

/* 图片容器 */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--grid);
  background:
    linear-gradient(120deg, rgba(27, 135, 166, .16), rgba(90, 59, 133, .2)),
    var(--ink-2);
}

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

.media-frame--band { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--zoom { aspect-ratio: 16 / 7; }

.media-frame--zoom img {
  transform: scale(1.06);
  object-position: 62% 42%;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(233, 239, 248, .07) 1px, transparent 1px);
  background-size: calc(100% / 6) 100%;
}

.media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mute);
}

/* 提示条 */
.callout {
  padding: 14px 18px;
  border-left: 2px solid var(--warn);
  background: rgba(255, 201, 77, .07);
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-text);
}

/* 显现 */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 8. 响应式 ---------- */
@media (max-width: 1080px) {
  .nav-toggle { display: inline-flex; }

  .capsule-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    display: none;
    padding: 10px;
    border: 1px solid var(--grid);
    border-radius: 18px;
    background: rgba(9, 15, 32, .98);
    box-shadow: 0 26px 52px rgba(0, 0, 0, .6);
  }

  .capsule-nav[data-open] { display: block; }

  .capsule-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .capsule-nav__link {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 15px;
  }
}

@media (max-width: 900px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-3, .span-4, .span-5, .span-6, .span-7, .span-8, .span-9 {
    grid-column: 1 / -1;
  }

  .footer__top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 36px;
  }
}

@media (max-width: 760px) {
  .telemetry__item { display: none; }
  .telemetry__item--ver { display: flex; }
  .pod--telemetry { gap: 8px; }
  .telemetry__pulse { display: none; }
}

@media (max-width: 640px) {
  :root { --head-h: 76px; }

  .brand__tag { display: none; }
  .brand__mark { font-size: 20px; }

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

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

  .newcomer-dock__copy { display: none; }
  .newcomer-dock__inner { gap: 12px; }
}

@media (max-width: 400px) {
  .nav-toggle__label { display: none; }
  .nav-toggle { padding: 8px 12px; }
}

/* ---------- 9. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .js .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .scroll-progress { transition: none; }
}