/* ============================================================
   /assets/site.css — 买球指南 共享样式
   战术板索引系统：墨蓝底 / 青绿路径 / 暖橙版本 / 米白纸面
   ============================================================ */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, li, figure, figcaption, blockquote, dl, dd, address { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
address { font-style: normal; }

/* ---------- tokens ---------- */
:root {
  --ink-navy: #0B1E2D;
  --pitch-cyan: #19F5C0;
  --amber: #F28A2E;
  --amber-bright: #FFA253;
  --rock-gray: #6F7B80;
  --moss-green: #5F7F5A;
  --clay: #B86B4B;
  --paper-cream: #F1E9D8;
  --slate-blue: #29465B;
  --mist-cyan: #D7FFF4;
  --line-blue: #5E7F92;
  --deep-panel: #071522;

  --cream-90: rgba(241, 233, 216, 0.9);
  --cream-80: rgba(241, 233, 216, 0.8);
  --cream-70: rgba(241, 233, 216, 0.7);
  --cream-55: rgba(241, 233, 216, 0.55);
  --cyan-soft: rgba(25, 245, 192, 0.16);

  --font-display: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 1200px;
  --gut: clamp(18px, 4vw, 40px);
  --radius: 2px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shadow-paper: 12px 12px 0 rgba(11, 30, 45, 0.12), 18px 18px 0 rgba(11, 30, 45, 0.06);
  --breakpoint-nav: 940px;
}

/* ---------- base ---------- */
body {
  background-color: var(--paper-cream);
  color: var(--ink-navy);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, .h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 7.4vw, 96px);
  line-height: 1.02;
  letter-spacing: -0.03em;
}
h2, .h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}
h3, .h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.28;
  letter-spacing: -0.01em;
}
p { line-height: 1.65; }

:focus-visible {
  outline: 2px solid var(--pitch-cyan);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(11, 30, 45, 0.45);
}

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -120px;
  z-index: 400;
  display: inline-block;
  padding: 10px 18px;
  background: var(--pitch-cyan);
  color: var(--ink-navy);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background-color: var(--ink-navy);
  color: var(--cream-90);
  border-bottom: 1px solid rgba(94, 127, 146, 0.5);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.site-header a { color: inherit; }

/* 首屏叠加：页面阶段在 body 上写 data-header-overlay="true" */
body[data-header-overlay="true"] .site-header {
  background-color: transparent;
  border-bottom-color: transparent;
  box-shadow: none;
}
body[data-header-overlay="true"] .site-header[data-scrolled="true"] {
  background-color: var(--slate-blue);
  border-bottom-color: rgba(25, 245, 192, 0.35);
  box-shadow: 0 12px 26px rgba(7, 21, 34, 0.4);
}
.site-header[data-scrolled="true"] {
  background-color: var(--slate-blue);
  border-bottom-color: rgba(25, 245, 192, 0.3);
  box-shadow: 0 12px 26px rgba(7, 21, 34, 0.35);
}

.header-bar { position: relative; }

.header-inner {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 10px var(--gut);
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 28px);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
  min-width: 0;
}
.brand-mark {
  position: relative;
  flex: none;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(25, 245, 192, 0.5);
  background:
    linear-gradient(135deg, transparent calc(50% - 1px), rgba(25, 245, 192, 0.85) 50%, transparent calc(50% + 1px));
}
.brand-mark span { position: absolute; left: 5px; height: 2px; background: var(--pitch-cyan); }
.brand-mark span:nth-child(1) { top: 8px; width: 8px; }
.brand-mark span:nth-child(2) { top: 14px; width: 15px; }
.brand-mark span:nth-child(3) { top: 20px; width: 11px; }

.brand-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.brand-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper-cream);
  transition: color 0.18s var(--ease);
}
.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  line-height: 1.2;
  color: var(--cream-55);
  white-space: nowrap;
}
.brand:hover .brand-name { color: var(--pitch-cyan); }

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  min-width: 0;
}
.nav-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
}
.nav-link {
  position: relative;
  display: block;
  padding: 9px 11px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--cream-80);
  white-space: nowrap;
  transition: color 0.18s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 2px;
  background: var(--pitch-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}
.nav-link:hover { color: var(--paper-cream); }
.nav-link:hover::after,
.nav-link:focus-visible::after { transform: scaleX(1); }
.nav-link[aria-current="page"] {
  color: var(--pitch-cyan);
  font-weight: 700;
}
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  box-shadow: 0 0 8px rgba(25, 245, 192, 0.6);
}

.nav-cta {
  flex: none;
  margin-left: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  background: var(--amber);
  color: var(--ink-navy);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}
.nav-cta:hover { background: var(--amber-bright); color: var(--ink-navy); }

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  flex: none;
  padding: 9px 12px;
  background: rgba(41, 70, 91, 0.6);
  border: 1px solid rgba(25, 245, 192, 0.45);
  border-radius: var(--radius);
  color: var(--cream-90);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.nav-toggle:hover { background: rgba(25, 245, 192, 0.16); border-color: var(--pitch-cyan); }
.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 18px;
  height: 14px;
}
.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--pitch-cyan);
  transition: transform 0.2s var(--ease);
}
.site-header[data-nav-open="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
.site-header[data-nav-open="true"] .nav-toggle-bar:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }

/* 快速跳转索引条 */
.quick-strip {
  background: var(--deep-panel);
  border-top: 1px solid rgba(94, 127, 146, 0.35);
}
.quick-inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 7px var(--gut);
  display: flex;
  align-items: center;
  gap: 14px;
  overflow-x: auto;
  scrollbar-width: none;
}
.quick-inner::-webkit-scrollbar { display: none; }
.quick-label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--cream-55);
  white-space: nowrap;
}
.quick-list { display: flex; align-items: center; gap: 18px; flex: none; }
.quick-link {
  display: inline-block;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cream-70);
  border-bottom: 1px solid transparent;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.quick-link:hover { color: var(--pitch-cyan); border-bottom-color: var(--pitch-cyan); }

/* 阅读进度线 */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 2px;
  background: var(--pitch-cyan);
  box-shadow: 0 0 8px rgba(25, 245, 192, 0.7);
  pointer-events: none;
  transition: width 0.1s linear;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--ink-navy);
  color: var(--cream-90);
  padding-block: clamp(36px, 6vw, 68px) 26px;
  border-top: 2px solid var(--pitch-cyan);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.85;
  background-image:
    linear-gradient(115deg, transparent 0 63%, rgba(41, 70, 91, 0.55) 63% 63.6%, transparent 63.6%),
    repeating-linear-gradient(90deg, rgba(94, 127, 146, 0.16) 0 1px, transparent 1px 96px);
}

.footer-top {
  position: relative;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) repeat(3, minmax(0, 0.8fr));
  gap: clamp(22px, 4vw, 54px);
}

.footer-brand { min-width: 0; }
.footer-brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper-cream);
}
.footer-brand-sub {
  margin-top: 10px;
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.65;
  color: var(--cream-70);
}
.footer-brand-meta {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(25, 245, 192, 0.8);
}

.footer-col { min-width: 0; }
.footer-col-title {
  margin-bottom: 12px;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cream-55);
  border-bottom: 1px solid rgba(94, 127, 146, 0.45);
}
.footer-list { display: flex; flex-direction: column; gap: 9px; }
.footer-link {
  display: inline-block;
  padding-bottom: 1px;
  font-size: 15px;
  color: var(--cream-80);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-link:hover { color: var(--pitch-cyan); border-bottom-color: var(--pitch-cyan); }
.footer-link[aria-current="page"] { color: var(--pitch-cyan); border-bottom-color: rgba(25, 245, 192, 0.6); }

.footer-contact {
  position: relative;
  max-width: var(--wrap);
  margin: clamp(26px, 4vw, 44px) auto 0;
  padding: 18px var(--gut) 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 26px;
  border-top: 1px solid rgba(94, 127, 146, 0.45);
}
.footer-contact-title {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber);
}
.footer-contact-body {
  flex: 1 1 320px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cream-80);
}

.footer-bottom {
  position: relative;
  max-width: var(--wrap);
  margin: clamp(18px, 3vw, 28px) auto 0;
  padding: 16px var(--gut) 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  border-top: 1px dashed rgba(94, 127, 146, 0.4);
}
.footer-copy,
.footer-legal {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--cream-70);
}
.to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid rgba(242, 138, 46, 0.7);
  border-radius: var(--radius);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.to-top:hover { background: var(--amber); border-color: var(--amber); color: var(--ink-navy); }

/* ============================================================
   SHARED LAYOUT UTILITIES
   ============================================================ */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}
.section { position: relative; padding-block: clamp(44px, 7vw, 88px); }
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  margin-bottom: clamp(20px, 3vw, 34px);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--clay);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--clay);
}
.lede {
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.65;
  color: var(--slate-blue);
}
.mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}

/* 面板 */
.panel {
  position: relative;
  background: #F7F1E4;
  border: 1px solid rgba(94, 127, 146, 0.5);
  border-radius: var(--radius);
  padding: clamp(18px, 3vw, 34px);
  box-shadow: 12px 12px 0 rgba(11, 30, 45, 0.1);
}
.panel--dark {
  background: var(--slate-blue);
  color: var(--cream-90);
  border-color: rgba(25, 245, 192, 0.3);
  box-shadow: 12px 12px 0 rgba(7, 21, 34, 0.45);
}
.panel--dark .lede { color: var(--cream-80); }
.panel--dark .eyebrow { color: var(--pitch-cyan); }
.panel--dark .eyebrow::before { background: var(--pitch-cyan); }

/* 网格 */
.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--asym { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid--asym > * { grid-column: span 12; min-width: 0; }
@media (min-width: 820px) {
  .grid--asym > .col-3 { grid-column: span 3; }
  .grid--asym > .col-4 { grid-column: span 4; }
  .grid--asym > .col-5 { grid-column: span 5; }
  .grid--asym > .col-6 { grid-column: span 6; }
  .grid--asym > .col-7 { grid-column: span 7; }
  .grid--asym > .col-8 { grid-column: span 8; }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.btn--primary {
  background: var(--amber);
  color: var(--ink-navy);
  box-shadow: 4px 4px 0 rgba(11, 30, 45, 0.85);
}
.btn--primary:hover {
  background: var(--amber-bright);
  box-shadow: 6px 6px 0 rgba(11, 30, 45, 0.85);
}
.btn--ghost {
  background: transparent;
  border-color: rgba(25, 245, 192, 0.6);
  color: var(--pitch-cyan);
}
.btn--ghost:hover {
  background: var(--cyan-soft);
  border-color: var(--pitch-cyan);
}
.btn--outline {
  background: transparent;
  border-color: var(--slate-blue);
  color: var(--slate-blue);
}
.btn--outline:hover {
  background: var(--slate-blue);
  border-color: var(--slate-blue);
  color: var(--paper-cream);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: 0.12em;
  color: var(--slate-blue);
  background: rgba(215, 255, 244, 0.55);
  border: 1px solid var(--line-blue);
  border-radius: var(--radius);
  white-space: nowrap;
}
.tag--version {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-navy);
  font-weight: 700;
}
.tag--moss {
  background: var(--moss-green);
  border-color: var(--moss-green);
  color: var(--paper-cream);
}
.tag--cyan {
  background: rgba(25, 245, 192, 0.18);
  border-color: rgba(25, 245, 192, 0.75);
  color: var(--slate-blue);
}

/* 面包屑 */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate-blue);
}
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs li:not(:last-child)::after { content: "/"; color: var(--line-blue); }
.breadcrumbs a {
  color: var(--slate-blue);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.breadcrumbs a:hover { color: var(--clay); border-bottom-color: var(--clay); }
.breadcrumbs [aria-current="page"] { color: var(--clay); }

/* 图片容器基础规则（页面阶段放占位图） */
.media-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(94, 127, 146, 0.6);
  border-radius: var(--radius);
  background: var(--ink-navy);
  box-shadow: 12px 12px 0 rgba(11, 30, 45, 0.14);
}
.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(25, 245, 192, 0.16) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(25, 245, 192, 0.12) 0 1px, transparent 1px 44px),
    linear-gradient(150deg, rgba(41, 70, 91, 0.92), rgba(7, 21, 34, 0.96));
}
.media-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-caption {
  position: relative;
  z-index: 2;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cream-90);
  background: rgba(11, 30, 45, 0.86);
  border-top: 1px solid rgba(94, 127, 146, 0.5);
}
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--diagram {
  aspect-ratio: 3 / 2;
  background: var(--paper-cream);
  box-shadow: 8px 8px 0 rgba(11, 30, 45, 0.12);
}
.media-frame--diagram::before {
  background-image:
    repeating-linear-gradient(90deg, rgba(41, 70, 91, 0.16) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(0deg, rgba(41, 70, 91, 0.12) 0 1px, transparent 1px 40px),
    linear-gradient(150deg, #F7F1E4, #E7DCC6);
}
.media-frame--diagram .media-caption {
  color: var(--ink-navy);
  background: rgba(241, 233, 216, 0.94);
  border-top-color: rgba(94, 127, 146, 0.45);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1080px) {
  .nav-link { padding: 9px 8px; font-size: 14px; }
  .nav-link::after { left: 8px; right: 8px; }
  .nav-cta { padding: 10px 15px; font-size: 13px; }
}

@media (max-width: 940px) {
  .header-inner { flex-wrap: nowrap; gap: 12px; }
  .brand { margin-right: auto; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 12px var(--gut) 20px;
    max-height: min(74vh, 560px);
    overflow-y: auto;
    background: var(--slate-blue);
    border-top: 1px solid rgba(25, 245, 192, 0.35);
    border-bottom: 1px solid rgba(94, 127, 146, 0.55);
    box-shadow: 0 18px 30px rgba(7, 21, 34, 0.45);
  }
  .site-nav[data-open="true"] { display: flex; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-link {
    padding: 13px 2px;
    font-size: 16px;
    border-bottom: 1px dashed rgba(94, 127, 146, 0.45);
  }
  .nav-link::after { left: 2px; right: auto; width: 34px; bottom: 7px; }
  .nav-cta {
    margin: 16px 0 0;
    padding: 13px 18px;
    clip-path: none;
    font-size: 15px;
  }
  .quick-inner { gap: 10px; }
  .quick-list { gap: 14px; }
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .brand-sub { display: none; }
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .footer-contact { flex-direction: column; gap: 8px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .media-frame--wide { aspect-ratio: 4 / 3; }
  .panel { box-shadow: 8px 8px 0 rgba(11, 30, 45, 0.1); }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@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;
  }
  .scroll-progress { transition: none; }
}