/* ==========================================================================
   九游体育主站 · 共享样式 /assets/site.css
   01 重置与变量  02 基础排版  03 工具类  04 按钮  05 头部
   06 导航        07 页脚    08 版式组件  09 响应式与动效偏好
   ========================================================================== */

/* 01 重置与变量 ---------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

:root {
  --ink-950: #04101A;
  --ink-900: #06131F;
  --ink-800: #0C2740;
  --ink-700: #143A5C;
  --paper: #F4EEE3;
  --paper-line: #E2D8C6;
  --orange: #FF5B1E;
  --orange-soft: #FFB08A;
  --teal: #2BF0C4;
  --ink-text: #101B24;
  --fog: #6B7C8C;
  --fog-dark: #93A3B0;

  --line-dark: rgba(226, 216, 198, 0.18);
  --line-dark-strong: rgba(226, 216, 198, 0.34);
  --line-paper: rgba(16, 27, 36, 0.14);

  --font-display: "Oswald", "Barlow Condensed", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "IBM Plex Mono", Menlo, Consolas, monospace;

  --wrap: 1280px;
  --gutter: clamp(18px, 4vw, 48px);
  --rail-h: 34px;
  --bar-h: 74px;
  --header-h: 108px;

  --ease: cubic-bezier(0.22, 0.7, 0.2, 1);
}

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

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

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

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

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

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

/* 02 基础排版 ------------------------------------------------------------ */
body {
  min-height: 100%;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink-900);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0.01em;
}

strong, b { font-weight: 700; }

::selection {
  background: var(--orange);
  color: #140A05;
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

main[tabindex="-1"]:focus { outline: none; }

/* 03 工具类 -------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.visually-hidden {
  position: absolute !important;
  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;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #140A05;
  background: var(--orange);
  transition: top 0.2s var(--ease);
}

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

.num {
  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: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line-dark-strong);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fog-dark);
}

.tag--orange { border-color: rgba(255, 91, 30, 0.55); color: var(--orange); }
.tag--teal { border-color: rgba(43, 240, 196, 0.5); color: var(--teal); }

.rule {
  height: 1px;
  border: 0;
  background: var(--line-dark);
}

.rule--paper { background: var(--line-paper); }

.pulse-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse-breathe 2.4s ease-in-out infinite;
}

@keyframes pulse-breathe {
  0%, 100% { box-shadow: 0 0 0 0 rgba(43, 240, 196, 0.55); opacity: 1; }
  50% { box-shadow: 0 0 0 6px rgba(43, 240, 196, 0); opacity: 0.72; }
}

/* 04 按钮 ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: 0;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.btn--primary {
  background: var(--orange);
  color: #140A05;
}

.btn--primary:hover {
  background: #FF7A42;
  transform: translateY(-1px);
}

.btn--ghost {
  color: var(--paper);
  border-color: var(--line-dark-strong);
}

.btn--ghost:hover {
  border-color: var(--paper);
  background: rgba(244, 238, 227, 0.08);
}

.btn--paper {
  background: var(--paper);
  color: var(--ink-900);
}

.btn--paper:hover { background: #FFFFFF; }

.btn--ink {
  background: var(--ink-900);
  color: var(--paper);
}

.btn--ink:hover { background: var(--ink-700); }

.btn--sm { padding: 8px 14px; font-size: 12px; }

.btn--block { width: 100%; }

/* 05 头部 ---------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(6, 19, 31, 0.86) 0%, rgba(6, 19, 31, 0.52) 58%, rgba(6, 19, 31, 0) 100%);
  transition: background-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-header[data-scrolled="true"] {
  background: rgba(12, 39, 64, 0.97);
  border-bottom: 1px solid var(--ink-700);
  box-shadow: 0 18px 40px -26px rgba(0, 0, 0, 0.9);
}

.header-rail {
  height: var(--rail-h);
  overflow: hidden;
  border-bottom: 1px solid rgba(226, 216, 198, 0.14);
  transition: height 0.3s var(--ease), opacity 0.22s var(--ease), border-color 0.3s var(--ease);
}

.site-header[data-scrolled="true"] .header-rail {
  height: 0;
  opacity: 0;
  border-bottom-color: transparent;
}

.rail-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--rail-h);
  width: 100%;
  max-width: 1360px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.rail-signal {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.rail-text {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--fog-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rail-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--orange-soft);
  border-bottom: 1px solid transparent;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.rail-link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: var(--bar-h);
  width: 100%;
  max-width: 1360px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  transition: height 0.3s var(--ease);
}

.site-header[data-scrolled="true"] .header-inner { height: 60px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  line-height: 1;
  color: var(--orange);
  border: 1px solid var(--orange);
  background: rgba(255, 91, 30, 0.1);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.brand:hover .brand-mark {
  background: var(--orange);
  color: #140A05;
}

.brand-text { display: block; }

.brand-label {
  display: block;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.15;
  color: var(--paper);
}

.brand-sub {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--fog-dark);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.header-cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  position: relative;
  width: 46px;
  height: 40px;
  border: 1px solid var(--line-dark-strong);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.nav-toggle:hover {
  border-color: var(--paper);
  background: rgba(20, 58, 92, 0.8);
}

.nav-toggle-bar {
  position: absolute;
  left: 11px;
  right: 11px;
  height: 1.5px;
  background: var(--paper);
  transition: transform 0.22s var(--ease);
}

.nav-toggle-bar:nth-of-type(1) { top: 14px; }
.nav-toggle-bar:nth-of-type(2) { bottom: 14px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-of-type(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-of-type(2) {
  transform: translateY(-5.5px) rotate(-45deg);
}

.header-progress {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.12s linear;
  pointer-events: none;
}

/* 06 导航 ---------------------------------------------------------------- */
.site-nav {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item { display: flex; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 13px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: rgba(244, 238, 227, 0.8);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.nav-link:hover {
  color: var(--paper);
  background: var(--ink-700);
  border-color: var(--line-dark);
}

.nav-idx {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: rgba(255, 176, 138, 0.85);
  transform: translateY(-2px);
  transition: color 0.18s var(--ease);
}

.nav-link[aria-current="page"] {
  color: #FFFFFF;
  background: rgba(255, 91, 30, 0.16);
  border-color: rgba(255, 91, 30, 0.42);
}

.nav-link[aria-current="page"] .nav-idx { color: var(--orange); }

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 2px;
  background: var(--orange);
}

.nav-foot { display: none; }

/* 07 页脚 ---------------------------------------------------------------- */
.site-footer {
  position: relative;
  overflow: hidden;
  padding-bottom: 28px;
  color: var(--paper);
  background: var(--ink-950);
  border-top: 1px solid var(--ink-700);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, rgba(226, 216, 198, 0.3) 0 1px, transparent 1px 14px);
  opacity: 0.65;
}

.footer-top {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  grid-template-columns: minmax(0, 1fr);
  padding-top: clamp(48px, 6vw, 80px);
  padding-bottom: clamp(32px, 4vw, 48px);
  border-bottom: 1px solid var(--line-dark);
}

.footer-mark {
  font-family: var(--font-display);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.02em;
}

.footer-mark::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-left: 10px;
  background: var(--orange);
  vertical-align: super;
}

.footer-tagline {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--fog-dark);
}

.footer-coord {
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--fog);
}

.footer-grid {
  display: grid;
  gap: 26px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.footer-col-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

.footer-list li + li { margin-top: 10px; }

.footer-link {
  font-size: 14.5px;
  color: rgba(244, 238, 227, 0.78);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.footer-link:hover {
  color: var(--paper);
  border-bottom-color: var(--orange);
}

.footer-contact {
  display: grid;
  gap: 18px;
  padding-top: clamp(26px, 3vw, 36px);
  padding-bottom: clamp(26px, 3vw, 36px);
  border-bottom: 1px solid var(--line-dark);
}

.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog-dark);
}

.contact-body { min-width: 0; }

.contact-list {
  display: grid;
  gap: 12px;
}

.contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.contact-item--wide { grid-column: 1 / -1; }

.contact-key {
  flex: 0 0 auto;
  min-width: 66px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--fog);
}

.contact-value {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.01em;
  color: var(--paper);
  word-break: break-word;
}

.copy-btn {
  flex: 0 0 auto;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--orange-soft);
  border: 1px solid var(--line-dark-strong);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease),
    background-color 0.18s var(--ease);
}

.copy-btn:hover {
  color: var(--orange);
  border-color: var(--orange);
  background: rgba(255, 91, 30, 0.12);
}

.copy-btn[data-copied="true"] {
  color: var(--teal);
  border-color: rgba(43, 240, 196, 0.55);
  background: rgba(43, 240, 196, 0.08);
}

.copy-status {
  min-height: 1.4em;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.footer-bottom {
  display: grid;
  gap: 14px;
  padding-top: 22px;
}

.footer-note {
  max-width: 70ch;
  font-size: 12px;
  line-height: 1.7;
  color: var(--fog);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fog-dark);
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-legal-links a {
  color: rgba(244, 238, 227, 0.8);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.footer-legal-links a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fog);
}

/* 08 版式组件 ------------------------------------------------------------ */
.band {
  position: relative;
  padding-block: clamp(48px, 7vw, 96px);
}

.band--ink {
  background: var(--ink-900);
  color: var(--paper);
}

.band--ink-800 {
  background: var(--ink-800);
  color: var(--paper);
  border-block: 1px solid var(--ink-700);
}

.band--paper {
  background: var(--paper);
  color: var(--ink-text);
}

.band--paper .eyebrow { color: #B8431A; }
.band--paper .footer-link,
.band--paper .tag { color: #4A5A66; }
.band--paper .tag { border-color: rgba(16, 27, 36, 0.24); }

.section-head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.6vw, 58px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: 0.005em;
}

.section-sub {
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fog-dark);
}

.band--paper .section-sub { color: #51616D; }

.editorial {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
  grid-template-columns: minmax(0, 1fr);
}

.side-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--fog);
  writing-mode: vertical-rl;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fog-dark);
}

.breadcrumb ol,
.breadcrumb ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "/";
  color: rgba(107, 124, 140, 0.7);
}

.breadcrumb a {
  color: rgba(244, 238, 227, 0.78);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.breadcrumb a:hover {
  color: var(--paper);
  border-bottom-color: var(--orange);
}

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

.breadcrumb--paper { color: #5E6C77; }
.breadcrumb--paper a { color: #33424E; }
.breadcrumb--paper a:hover { color: var(--ink-text); }

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.8;
}

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

.prose h2 {
  margin-top: 2em;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.15;
}

.prose h3 {
  margin-top: 1.6em;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 23px);
  font-weight: 800;
  line-height: 1.25;
}

.prose ul li,
.prose ol li {
  position: relative;
  padding-left: 20px;
}

.prose ul li + li,
.prose ol li + li { margin-top: 0.5em; }

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 1px;
  background: var(--orange);
}

.prose ol { counter-reset: prose-ol; }

.prose ol li::before {
  counter-increment: prose-ol;
  content: counter(prose-ol, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.24em;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
}

.prose a {
  color: inherit;
  border-bottom: 1px solid var(--orange);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.prose--paper { color: var(--ink-text); }
.prose--paper .prose h2,
.prose--paper h2,
.prose--paper h3 { color: var(--ink-text); }

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--line-dark);
}

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

.media-frame::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 44px;
  height: 3px;
  background: var(--orange);
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--film { aspect-ratio: 4 / 5; }

.media-frame--empty {
  display: grid;
  place-items: center;
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fog);
  background-image: repeating-linear-gradient(135deg, rgba(226, 216, 198, 0.06) 0 1px, transparent 1px 12px);
}

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.1em;
  color: var(--fog);
}

.band--paper .media-caption { color: #5E6C77; }

/* 进场显现（由 JS 添加 reveal-on） */
html.reveal-on [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

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

/* 09 响应式与动效偏好 ---------------------------------------------------- */
@media (min-width: 640px) {
  .contact-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-item--wide { grid-column: 1 / -1; }
}

@media (min-width: 900px) {
  .footer-top { grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr); }
  .footer-contact { grid-template-columns: 180px minmax(0, 1fr); align-items: start; }
  .footer-bottom { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
  .footer-legal { justify-content: flex-end; }
}

@media (min-width: 960px) {
  .editorial { grid-template-columns: minmax(0, 7fr) minmax(0, 3fr); }
  .editorial--reverse { grid-template-columns: minmax(0, 3fr) minmax(0, 7fr); }
}

@media (max-width: 1100px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 80;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 28px;
    width: min(88vw, 420px);
    padding: calc(var(--bar-h) + 34px) 26px 34px;
    overflow-y: auto;
    background: var(--ink-900);
    border-left: 1px solid var(--ink-700);
    clip-path: polygon(7% 0, 100% 0, 100% 100%, 0 100%);
    transform: translateX(101%);
    visibility: hidden;
    transition: transform 0.34s var(--ease), visibility 0.34s var(--ease);
  }

  .site-nav[data-open="true"] {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .nav-item { border-bottom: 1px solid rgba(226, 216, 198, 0.12); }

  .nav-link {
    width: 100%;
    padding: 15px 4px;
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: rgba(244, 238, 227, 0.86);
    border: 0;
    background: none;
  }

  .nav-link:hover {
    color: var(--paper);
    background: rgba(20, 58, 92, 0.7);
    border-color: transparent;
  }

  .nav-link[aria-current="page"] {
    padding-left: 16px;
    color: var(--orange);
    background: none;
    border-color: transparent;
  }

  .nav-link[aria-current="page"]::after { display: none; }

  .nav-link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 16px;
    bottom: 16px;
    width: 3px;
    background: var(--orange);
  }

  .nav-idx { font-size: 11px; }

  .nav-foot { display: grid; gap: 12px; }

  .nav-foot-note {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.16em;
    color: var(--fog);
  }

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

  html.is-nav-open body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 75;
    background: rgba(4, 16, 26, 0.68);
  }
}

@media (max-width: 900px) {
  .site-header { --bar-h: 66px; }
  .brand-sub { display: none; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .rail-text { font-size: 10px; letter-spacing: 0.12em; }
  .rail-link { display: none; }
  .header-rail { --rail-h: 30px; }
  .header-inner { gap: 12px; }
  .brand-mark { width: 34px; height: 34px; font-size: 17px; }
  .brand-label { font-size: 14px; }
  .prose { font-size: 16px; }
}

@media (max-width: 620px) {
  .header-cta { display: none; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .footer-mark { font-size: 30px; }
  .contact-key { min-width: 100%; }
}

@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;
  }

  .pulse-dot { animation: none; box-shadow: none; }

  html.reveal-on [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}