/* ==========================================================================
   三亿体育 · 共享外壳样式 /assets/site.css
   深墨绿场底 · 荧光青信号 · 琥珀金行动
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { list-style: none; padding: 0; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }

:root {
  /* 场底与结构色 */
  --field: #071A14;
  --night: #0E2A21;
  --moss: #1E4A3A;
  --cyan: #43F5CF;
  --teal: #0E7F74;
  --amber: #F4B740;
  --cream: #F5F1E6;
  --stone: #8FA39B;
  --clay: #C66A4A;
  --mist: #C9D8D2;

  --ink: var(--cream);
  --ink-soft: rgba(245, 241, 230, 0.78);
  --ink-mute: var(--stone);
  --line: rgba(201, 216, 210, 0.16);
  --line-strong: rgba(201, 216, 210, 0.32);
  --line-cyan: rgba(67, 245, 207, 0.38);

  --font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "Source Han Sans SC", "HarmonyOS Sans SC", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: 1440px;
  --gutter: clamp(18px, 4vw, 56px);
  --header-h: 76px;

  --radius-s: 10px;
  --radius-m: 18px;
  --radius-l: 28px;
  --radius-pill: 999px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 220ms;
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: clamp(16px, 1.05vw, 17px);
  line-height: 1.75;
  color: var(--ink-soft);
  background-color: var(--field);
  background-image:
    radial-gradient(980px 520px at 82% -12%, rgba(67, 245, 207, 0.10), transparent 62%),
    radial-gradient(760px 460px at 4% 6%, rgba(30, 74, 58, 0.55), transparent 66%),
    linear-gradient(rgba(201, 216, 210, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 216, 210, 0.04) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.005em;
  color: var(--cream);
}

p { text-wrap: pretty; }
::selection { background: var(--cyan); color: var(--field); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}
main:focus { outline: none; }

/* ---------- 通用容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(44px, 7vw, 96px); }
.section--tight { padding-block: clamp(28px, 4vw, 56px); }

/* ---------- 文本层级 ---------- */
.t-display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 5.4vw, 72px);
  line-height: 1.02;
  color: var(--cream);
  text-wrap: balance;
}
.t-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.1;
  color: var(--cream);
}
.t-h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 1.8vw, 25px);
  line-height: 1.2;
  color: var(--cream);
}
.t-lead {
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 62ch;
}
.t-meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--stone);
}
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
  flex: 0 0 auto;
}

/* ---------- 按钮 ---------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--cream);
  --btn-bd: var(--line-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--btn-bd);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease),
    color var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--amber {
  --btn-bg: var(--amber);
  --btn-fg: #08180F;
  --btn-bd: transparent;
  box-shadow: 0 12px 26px -16px rgba(244, 183, 64, 0.95);
}
.btn--amber:hover { --btn-bg: #FFC95E; }
.btn--ghost {
  --btn-bg: rgba(67, 245, 207, 0.06);
  --btn-fg: var(--cyan);
  --btn-bd: var(--line-cyan);
}
.btn--ghost:hover { --btn-bg: rgba(67, 245, 207, 0.15); }
.btn--solid {
  --btn-bg: var(--teal);
  --btn-fg: var(--cream);
  --btn-bd: transparent;
}
.btn--solid:hover { --btn-bg: #12968A; }
.btn--sm { padding: 9px 16px; font-size: 13.5px; }
.btn--block { width: 100%; }

/* ---------- 标签 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(201, 216, 210, 0.06);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  line-height: 1.5;
}
.chip--cyan { border-color: var(--line-cyan); color: var(--cyan); background: rgba(67, 245, 207, 0.09); }
.chip--amber { border-color: rgba(244, 183, 64, 0.42); color: var(--amber); background: rgba(244, 183, 64, 0.10); }
.chip--clay { border-color: rgba(198, 106, 74, 0.48); color: #E5A68D; background: rgba(198, 106, 74, 0.13); }

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  transform: translateY(-180%);
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  background: var(--amber);
  color: var(--field);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); outline-color: var(--cream); }

/* ==========================================================================
   页头
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(7, 26, 20, 0.90), rgba(7, 26, 20, 0.58));
  border-bottom: 1px solid rgba(201, 216, 210, 0.14);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.site-header[data-scrolled="true"] {
  background: var(--night);
  border-bottom-color: rgba(201, 216, 210, 0.24);
  box-shadow: 0 22px 44px -34px #000;
}

.read-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
  background: rgba(201, 216, 210, 0.10);
  z-index: 2;
}
.read-progress__bar {
  display: block;
  height: 100%;
  width: var(--read, 0%);
  background: linear-gradient(90deg, var(--teal), var(--cyan));
  box-shadow: 0 0 12px rgba(67, 245, 207, 0.65);
  transition: width 0.12s linear;
}

.hd-shell { position: relative; }

.hd-top {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 32px);
  min-height: var(--header-h);
  padding-block: 10px;
}

/* 品牌 */
.hd-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--cream);
}
.hd-mark {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 3px;
  width: 46px;
  height: 46px;
  padding: 11px 9px;
  border-radius: 14px;
  background: linear-gradient(150deg, var(--moss), var(--night));
  border: 1px solid var(--line-cyan);
  overflow: hidden;
  flex: 0 0 auto;
}
.hd-mark::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 216, 210, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 216, 210, 0.14) 1px, transparent 1px);
  background-size: 9px 9px;
  opacity: 0.6;
}
.hd-mark i {
  position: relative;
  display: block;
  width: 3px;
  border-radius: 2px;
  background: var(--cyan);
}
.hd-mark i:nth-child(1) { height: 40%; opacity: 0.55; }
.hd-mark i:nth-child(2) { height: 78%; }
.hd-mark i:nth-child(3) { height: 56%; opacity: 0.75; }
.hd-mark i:nth-child(4) { height: 100%; opacity: 0.9; }
.hd-mark i:nth-child(2) { animation: hd-pulse 2.8s var(--ease) infinite; }

@keyframes hd-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hd-word { display: flex; flex-direction: column; line-height: 1.15; }
.hd-wordmark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 1.7vw, 23px);
  letter-spacing: 0.02em;
  color: var(--cream);
}
.hd-tagline {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

/* 导航 */
.nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
}
.nav-item { display: flex; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  padding: 9px 13px;
  border-radius: var(--radius-pill);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.nav-link:hover { color: var(--cyan); background: rgba(67, 245, 207, 0.09); }
.nav-link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(67, 245, 207, 0.12);
  box-shadow: inset 0 0 0 1px var(--line-cyan);
}
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transform: translateX(-50%);
}

.nav-cta { display: none; }

/* 页头行动 */
.hd-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 移动按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-cyan);
  background: rgba(67, 245, 207, 0.07);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  cursor: pointer;
}
.nav-toggle__bars { display: grid; gap: 4px; width: 18px; }
.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 110px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, #071A14 0%, #0A2119 58%, #071A14 100%);
  color: var(--ink-soft);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan) 18%, var(--teal) 58%, transparent);
}
.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background-image:
    linear-gradient(rgba(201, 216, 210, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 216, 210, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 74%);
  mask-image: linear-gradient(180deg, #000, transparent 74%);
}
.ft-shell {
  position: relative;
  z-index: 1;
  padding-block: clamp(40px, 6vw, 76px) clamp(24px, 3vw, 36px);
}

.ft-lede {
  display: grid;
  grid-template-columns: minmax(260px, 1.05fr) 2fr;
  gap: clamp(28px, 4vw, 64px);
}
.ft-brandcol { display: flex; flex-direction: column; align-items: flex-start; }
.ft-brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.1;
  color: var(--cream);
  letter-spacing: 0.02em;
}
.ft-brand-tail {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--stone);
  vertical-align: 2px;
}
.ft-desc {
  margin-block: 14px 22px;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
}

.ft-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 44px);
}
.ft-col__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.ft-col__title::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--cyan);
  opacity: 0.7;
}
.ft-links { display: grid; gap: 10px; }
.ft-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.ft-link:hover { color: var(--cyan); transform: translateX(3px); }
.ft-link--sm { font-size: 13px; color: var(--stone); }
.ft-link--sm:hover { color: var(--cream); transform: none; }

.ft-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
  margin-top: clamp(30px, 4.6vw, 56px);
  padding-block: 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.ft-fact { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.ft-fact__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--stone);
}
.ft-fact__v {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.ft-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 24px;
  font-size: 13px;
  color: var(--stone);
}
.ft-copy, .ft-icp { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.04em; }
.ft-icp { color: var(--mist); opacity: 0.75; }
.ft-legal { display: flex; flex-wrap: wrap; gap: 18px; }

/* ==========================================================================
   通用页面构件
   ========================================================================== */
.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(16px, 2.5vw, 28px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stone);
}
.crumb li { display: flex; align-items: center; gap: 8px; }
.crumb li + li::before { content: "/"; color: var(--line-strong); }
.crumb a { color: var(--stone); text-decoration: none; }
.crumb a:hover { color: var(--cyan); }
.crumb [aria-current="page"] { color: var(--cream); }

.prose {
  max-width: 72ch;
  font-size: clamp(16px, 1.05vw, 18px);
  line-height: 1.8;
  color: var(--ink-soft);
}
.prose > * + * { margin-top: 1.05em; }
.prose h2 {
  margin-top: 2em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.15;
  color: var(--cream);
}
.prose h3 {
  margin-top: 1.7em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 1.6vw, 22px);
  color: var(--cream);
}
.prose ul, .prose ol { display: grid; gap: 0.5em; padding-left: 1.25em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li::marker { color: var(--cyan); }
.prose a { color: var(--cyan); }
.prose strong { color: var(--cream); font-weight: 700; }
.prose blockquote {
  padding-left: 1em;
  border-left: 3px solid var(--cyan);
  color: var(--ink-soft);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(67, 245, 207, 0.10);
  color: var(--cyan);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-12 { grid-column: span 12; }

/* 图片容器 */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background-color: var(--moss);
  background-image:
    linear-gradient(145deg, rgba(30, 74, 58, 0.95), rgba(7, 26, 20, 0.95)),
    repeating-linear-gradient(90deg, rgba(201, 216, 210, 0.10) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(201, 216, 210, 0.10) 0 1px, transparent 1px 48px);
  aspect-ratio: 16 / 9;
  isolation: isolate;
}
.media-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--21x9 { aspect-ratio: 21 / 9; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--3x4 { aspect-ratio: 3 / 4; }
.media-frame--2x3 { aspect-ratio: 2 / 3; }
.media-frame--flat { border-radius: 0; }
.media-frame--ring { box-shadow: inset 0 0 0 1px rgba(67, 245, 207, 0.22); }

/* 章节高亮目录 */
[data-spy-link] {
  color: var(--stone);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
[data-spy-link]:hover { color: var(--cyan); }
[data-spy-link][aria-current="true"] {
  color: var(--cyan);
  font-weight: 700;
}

/* 显现动效 */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.34s var(--ease), transform 0.34s var(--ease);
}
.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1160px) {
  .nav-toggle { display: inline-flex; }
  .hd-actions { display: none; }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 14px var(--gutter) 22px;
    background: var(--night);
    border-top: 1px solid var(--line-cyan);
    border-radius: 0 0 var(--radius-l) var(--radius-l);
    box-shadow: 0 30px 60px -30px #000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
  }
  .nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-item { border-bottom: 1px solid var(--line); }
  .nav-item:last-child { border-bottom: 0; }
  .nav-link {
    width: 100%;
    padding: 14px 4px;
    border-radius: var(--radius-s);
    font-size: 16.5px;
    font-weight: 600;
  }
  .nav-link[aria-current="page"] { box-shadow: none; background: rgba(67, 245, 207, 0.08); padding-left: 12px; }
  .nav-link[aria-current="page"]::after { left: 0; bottom: auto; top: 50%; margin-top: -7px; width: 3px; height: 14px; transform: none; }
  .nav-cta {
    display: grid;
    gap: 10px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--line);
  }
}

@media (max-width: 900px) {
  :root { --header-h: 68px; }
  .ft-lede { grid-template-columns: 1fr; }
  .ft-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9 { grid-column: span 12; }
}

@media (max-width: 600px) {
  .hd-mark { width: 42px; height: 42px; padding: 10px 8px; }
  .ft-nav { grid-template-columns: 1fr; }
  .ft-brand-tail { display: block; margin-left: 0; margin-top: 6px; }
  .ft-base { justify-content: flex-start; }
  .media-frame { border-radius: var(--radius-s); }
}

@media (max-width: 480px) {
  .hd-tagline { display: none; }
  .nav-toggle__label { display: none; }
  .nav-toggle { padding: 10px 12px; }
}

@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 [data-reveal] { opacity: 1; transform: none; }
  .hd-mark i:nth-child(2) { animation: none; }
  .btn:hover, .ft-link:hover { transform: none; }
}