/* =========================================================
   a8棋牌局 — 共享样式 /assets/site.css
   夜间牌桌配色 + 堆叠画板结构
   ========================================================= */

:root {
  /* 品牌色 */
  --ink: #0B1F1A;
  --panel: #12302A;
  --panel-2: #143A31;
  --panel-3: #0F2721;
  --line: #1D4438;
  --amber: #F2A93B;
  --amber-soft: #FFD08A;
  --cyan: #38E1D6;
  --coral: #FF6B52;
  --paper: #F4F1E8;
  --mist: #9AA8A2;
  --ok: #7BD88F;

  /* 语义色 */
  --bg: var(--ink);
  --fg: var(--paper);
  --muted: var(--mist);
  --accent: var(--amber);

  /* 字号三档 */
  --fs-display: clamp(34px, 6vw, 76px);
  --fs-title: clamp(24px, 3.4vw, 40px);
  --fs-body: 17px;
  --fs-note: 14px;

  /* 尺度 */
  --wrap: 1180px;
  --gutter: 24px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --stack-gap: 88px;
  --header-h: 108px;

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;

  /* 动效 */
  --ease: cubic-bezier(.2, .7, .3, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 84% -10%, rgba(242, 169, 59, .07), transparent 62%),
    radial-gradient(900px 540px at 6% 12%, rgba(56, 225, 214, .05), transparent 66%);
  background-repeat: no-repeat;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-nav-open { overflow: hidden; }

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.15;
  text-wrap: balance;
}

p { margin: 0; }

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

a { color: inherit; }

ul, ol { margin: 0; padding: 0; }

button { font: inherit; color: inherit; }

hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

::selection { background: var(--amber); color: #0B1F1A; }

/* ---------------- 焦点可见 ---------------- */
:where(a, button, [tabindex], summary, input, select, textarea):focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------------- 排版工具 ---------------- */
.display {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.05;
  text-wrap: balance;
}

.display--sm {
  font-size: var(--fs-title);
  line-height: 1.1;
}

.lead {
  font-size: clamp(17px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--mist);
  max-width: 62ch;
}

.note {
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  line-height: 1.65;
  letter-spacing: .04em;
  color: var(--mist);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--amber);
}

.note-vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--mist);
}

.note-tilt {
  display: inline-block;
  transform: rotate(-6deg);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--mist);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------------- 布局 ---------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(56px, 8vw, var(--stack-gap)); }
.section--tight { padding-block: clamp(36px, 5vw, 56px); }

.flow > * + * { margin-top: 16px; }

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.wave-divider {
  height: 22px;
  background-image: radial-gradient(circle at 50% 100%, var(--line) 0 10px, transparent 10px);
  background-size: 26px 22px;
  background-repeat: repeat-x;
  opacity: .55;
  pointer-events: none;
}

/* ---------------- 画板 ---------------- */
.board {
  position: relative;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background-image: linear-gradient(165deg, var(--panel-2) 0%, var(--panel) 55%, var(--panel-3) 100%);
  box-shadow: 0 30px 64px -38px rgba(0, 0, 0, .95);
  z-index: 1;
}

.board--raised {
  margin-top: -8px;
  z-index: 2;
}

.board__marker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 5px 13px;
  border: 1px solid rgba(242, 169, 59, .32);
  border-radius: var(--radius-pill);
  background: rgba(242, 169, 59, .1);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--amber);
  line-height: 1.4;
}

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .01em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 200ms var(--ease), background-color 200ms var(--ease),
              color 200ms var(--ease), border-color 200ms var(--ease),
              box-shadow 200ms var(--ease);
}

.btn--accent {
  background: var(--amber);
  color: #0B1F1A;
  box-shadow: 0 12px 26px -12px rgba(242, 169, 59, .7);
}

.btn--accent:hover {
  background: var(--amber-soft);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--line);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn--small { padding: 8px 16px; font-size: 14px; }
.btn--block { width: 100%; }

/* ---------------- 分段控件 ---------------- */
.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(18, 48, 42, .85);
}

.segmented__btn {
  appearance: none;
  border: 0;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
  cursor: pointer;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.segmented__btn:hover { color: var(--fg); }

.segmented__btn[aria-selected="true"],
.segmented__btn[aria-pressed="true"] {
  background: var(--amber);
  color: #0B1F1A;
}

/* ---------------- 标签 ---------------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(29, 68, 56, .35);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  line-height: 1.45;
  color: var(--mist);
}

.tag--live {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #0B1F1A;
  font-weight: 700;
}

.tag--warn {
  background: rgba(255, 107, 82, .1);
  border-color: rgba(255, 107, 82, .45);
  color: var(--coral);
}

.tag--ok {
  background: rgba(123, 216, 143, .1);
  border-color: rgba(123, 216, 143, .4);
  color: var(--ok);
}

/* ---------------- 横向牌组 ---------------- */
.card-rail {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 8px var(--gutter) 22px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.card-rail--flush { padding-inline: 0; }

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

.card-rail::-webkit-scrollbar { height: 8px; }
.card-rail::-webkit-scrollbar-track { background: transparent; }
.card-rail::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: var(--radius-pill);
}

/* ---------------- 图片容器 ---------------- */
.media-frame {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background-image: linear-gradient(150deg, var(--panel-2) 0%, var(--ink) 62%, var(--panel) 100%);
}

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(120% 90% at 18% 0%, rgba(242, 169, 59, .14), transparent 58%),
    linear-gradient(180deg, transparent 52%, rgba(11, 31, 26, .72) 100%);
}

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

.media-frame__caption {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--paper);
}

/* ---------------- 面包屑 ---------------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--mist);
}

.breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.breadcrumb a:hover { color: var(--amber); }

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

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

/* ---------------- 滚动进度条 ---------------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left center;
  background-image: linear-gradient(90deg, var(--amber) 0%, var(--coral) 48%, var(--cyan) 100%);
  z-index: 200;
  pointer-events: none;
  transition: transform 120ms linear;
}

/* ---------------- 显现动画 ---------------- */
[data-reveal] {
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

html[data-anim="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
}

html[data-anim="on"] [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--ink);
  background-image: linear-gradient(180deg, #0C221C 0%, var(--ink) 70%);
  border-bottom: 1px solid var(--line);
  color: var(--paper);
}

/* --- 跳过链接 --- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -120px;
  z-index: 210;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  background: var(--amber);
  color: #0B1F1A;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: top 200ms var(--ease);
}

.skip-link:focus { top: 16px; }

/* --- 上层：品牌说明条 --- */
.header-top {
  overflow: hidden;
  max-height: 88px;
  border-bottom: 1px solid var(--line);
  background-image: linear-gradient(180deg, rgba(20, 58, 49, .92), rgba(11, 31, 26, .55));
  transition: max-height 320ms var(--ease), opacity 240ms var(--ease);
}

.header-top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 56px;
  padding-block: 12px;
}

.brand { min-width: 0; }

.brand__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 4px 12px 4px 4px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  color: inherit;
}

.brand__mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 13px;
  background-image: linear-gradient(145deg, var(--amber) 0%, #DE8A1C 100%);
  color: #0B1F1A;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: 0 8px 20px -8px rgba(242, 169, 59, .85);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  line-height: 1.2;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--paper);
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
  white-space: nowrap;
}

.header-top__meta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: none;
}

.header-mail {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--mist);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.header-mail:hover { color: var(--amber-soft); }

.header-rule-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(29, 68, 56, .4);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 200ms var(--ease), color 200ms var(--ease),
              background-color 200ms var(--ease);
}

.header-rule-link::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--amber);
  transition: transform 200ms var(--ease);
}

.header-rule-link:hover {
  border-color: var(--amber);
  color: var(--amber-soft);
  background: rgba(242, 169, 59, .1);
}

.header-rule-link:hover::after { transform: translateX(3px); }

/* --- 移动导航按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(29, 68, 56, .5);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.nav-toggle:hover { border-color: var(--amber); color: var(--amber-soft); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--amber);
  transition: transform 220ms var(--ease), opacity 180ms var(--ease);
}

.site-header[data-open="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(2) {
  opacity: 0;
}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* --- 下层：栏目层 --- */
.header-main { position: relative; }

.header-main__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 58px;
  padding-block: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  color: var(--paper);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: color 180ms var(--ease), background-color 180ms var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 3px;
  border-radius: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms var(--ease);
}

.nav-link:hover { color: var(--amber-soft); }
.nav-link:hover::after { transform: scaleX(.4); }

.nav-link[aria-current="page"] {
  color: var(--amber);
  font-weight: 700;
}

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

.nav-cta { flex: none; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  border-top: 1px solid var(--line);
  background-image: linear-gradient(180deg, var(--ink) 0%, #0E2620 42%, var(--panel) 100%);
  color: var(--paper);
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 3px;
  background-image: linear-gradient(90deg, var(--amber) 0%, var(--coral) 34%, var(--cyan) 68%, var(--amber) 100%);
  opacity: .9;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.05fr) minmax(0, 2fr);
  gap: 56px;
  padding-block: clamp(48px, 6vw, 76px) clamp(36px, 5vw, 56px);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--paper);
}

.footer-brand__line {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--amber-soft);
}

.footer-brand__note {
  margin: 18px 0 0;
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px 28px;
}

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

.footer-col__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--cyan);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
}

.footer-list a {
  display: inline-block;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.footer-list a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.footer-list--contact li {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .02em;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
}

.footer-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-base {
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, .2);
}

.footer-base__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-block: 22px;
}

.footer-record {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist);
}

.footer-copy {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* =========================================================
   响应式
   ========================================================= */

/* 桌面：滚动后收起品牌说明条 */
@media (min-width: 901px) {
  .site-header[data-scrolled="true"] .header-top {
    max-height: 0;
    opacity: 0;
  }
}

@media (max-width: 1040px) {
  :root { --gutter: 22px; }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

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

@media (max-width: 900px) {
  :root { --gutter: 20px; --header-h: 66px; }

  html { scroll-padding-top: 80px; }

  .header-top { max-height: none; }

  .header-top__inner {
    padding-block: 12px;
    gap: 12px;
  }

  .header-mail { display: none; }
  .header-rule-link { display: none; }

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

  .header-main { padding: 0; }

  .header-main__inner {
    padding-inline: 0;
    padding-block: 0;
    min-height: 0;
    gap: 0;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 90;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: calc(var(--header-h) + 22px) var(--gutter) 44px;
    overflow-y: auto;
    background-image: linear-gradient(180deg, #0B1F1A 0%, #102B24 62%, #12302A 100%);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 220ms var(--ease), transform 280ms var(--ease),
                visibility 0s linear 280ms;
  }

  .site-header[data-open="true"] .site-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    transition-delay: 0s, 0s, 0s;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
    gap: 6px;
    padding-top: 4px;
  }

  .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 900;
    letter-spacing: -.01em;
    color: var(--paper);
  }

  .nav-link::after { display: none; }

  .nav-link:hover { background: rgba(29, 68, 56, .55); }

  .nav-link[aria-current="page"] {
    background: rgba(242, 169, 59, .12);
    border-color: rgba(242, 169, 59, .35);
    color: var(--amber);
  }

  .nav-cta {
    width: 100%;
    margin-top: 20px;
    padding-block: 16px;
    font-size: 16px;
  }

  .board { padding: clamp(20px, 5vw, 32px); }

  .lead { font-size: 16.5px; }
}

@media (max-width: 560px) {
  :root { --fs-body: 17px; }

  .brand__tagline {
    max-width: 15ch;
    white-space: normal;
    line-height: 1.35;
  }

  .brand__name { font-size: 18px; }
  .brand__mark { width: 34px; height: 34px; border-radius: 11px; font-size: 13px; }

  .footer-cols { grid-template-columns: minmax(0, 1fr); gap: 28px; }

  .footer-base__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .card-rail { gap: 14px; }

  .breadcrumb { font-size: 12.5px; }
}

/* =========================================================
   Reduced Motion
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  html[data-anim="on"] [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .btn--accent:hover,
  .header-rule-link:hover::after { transform: none !important; }

  .scroll-progress { transition: none; }
}