/* ============================================================
   亚星赛场 / Site Kit 共享样式
   奶油纸白画布 + 墨绿档案块 + 荧光黄绿状态标记
   ============================================================ */

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

html { -webkit-text-size-adjust: 100%; }

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

ul, ol { list-style: none; }

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

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

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

:root {
  --ink-green: #0E2A22;
  --charcoal: #15171A;
  --cream: #F4EFE4;
  --warm-white: #FBF8F1;
  --cool-grey: #B9C0BD;
  --moss: #4A5F57;
  --lime: #C8F751;
  --lime-wash: #EAF3D2;
  --signal: #E4572E;
  --brown-black: #2B211C;
  --mist: #DDE3DC;

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

  --wrap: 1180px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 2px;
  --line-soft: rgba(14, 42, 34, .18);
  --line-dark: rgba(251, 248, 241, .18);
}

body {
  font-family: var(--font-text);
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--charcoal);
  background-color: var(--cream);
  background-image:
    repeating-linear-gradient(90deg, rgba(14, 42, 34, .05) 0 1px, transparent 1px calc(100% / 12)),
    linear-gradient(180deg, rgba(21, 23, 26, .05), rgba(21, 23, 26, 0) 320px);
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--charcoal);
  text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 5.2vw, 4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.05rem; font-weight: 700; letter-spacing: .01em; line-height: 1.4; }

p { text-wrap: pretty; }

strong { font-weight: 700; color: var(--ink-green); }

::selection { background: var(--lime); color: var(--ink-green); }

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgba(14, 42, 34, .3);
}

/* ---------- 工具层 ---------- */

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

.mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1;
  letter-spacing: .02em;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--moss);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--lime);
  flex: none;
}

.section { padding-block: clamp(48px, 7vw, 96px); }
.section--warm { background: var(--warm-white); }
.section--mist { background: var(--mist); }

.section--ink {
  background: var(--ink-green);
  color: var(--warm-white);
}

.section--ink h1,
.section--ink h2,
.section--ink h3,
.section--ink h4 { color: var(--warm-white); }

.section--ink .eyebrow { color: var(--cool-grey); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: clamp(20px, 3vw, 36px);
}

.hairline {
  height: 0;
  border: 0;
  border-top: 1px solid var(--line-soft);
}

.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;
}

/* ---------- 跳过链接 ---------- */

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--lime);
  color: var(--ink-green);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  border-radius: var(--radius);
  box-shadow: 0 6px 20px rgba(14, 42, 34, .3);
  transform: translateY(-160%);
  transition: transform .18s ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  min-height: 44px;
  padding: 10px 18px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.2;
  border: 1px solid var(--charcoal);
  border-radius: var(--radius);
  background: var(--warm-white);
  color: var(--charcoal);
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.btn:hover {
  background: var(--charcoal);
  border-color: var(--charcoal);
  color: var(--warm-white);
}

.btn--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--warm-white);
}

.btn--signal:hover {
  background: #c9461f;
  border-color: #c9461f;
  color: var(--warm-white);
}

.btn--lime {
  background: var(--lime);
  border-color: var(--ink-green);
  color: var(--ink-green);
}

.btn--lime:hover {
  background: var(--ink-green);
  border-color: var(--ink-green);
  color: var(--lime);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(251, 248, 241, .55);
  color: var(--warm-white);
}

.btn--ghost:hover {
  background: var(--warm-white);
  border-color: var(--warm-white);
  color: var(--ink-green);
}

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

/* ---------- 站点头部 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--cream);
  border-top: 3px solid var(--ink-green);
  border-bottom: 1px solid var(--ink-green);
  --header-pad: 16px;
  --scroll-progress: 0;
}

.site-header__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  z-index: 3;
  background: var(--lime);
  transform: scaleX(var(--scroll-progress));
  transform-origin: 0 50%;
  pointer-events: none;
}

.masthead { border-bottom: 1px solid var(--line-soft); }

.masthead__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding-block: var(--header-pad);
  transition: padding-block .2s ease;
}

.masthead__meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--moss);
  transition: opacity .2s ease, visibility .2s ease;
}

.masthead__meta--right {
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.masthead__kicker {
  color: var(--signal);
  font-weight: 600;
}

.masthead__desc { color: var(--moss); }

.masthead__brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding-inline: 12px;
  text-align: center;
}

.masthead__mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.05;
  letter-spacing: -.03em;
  color: var(--ink-green);
  transition: font-size .2s ease;
}

.masthead__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .42em;
  text-transform: uppercase;
  color: var(--moss);
  overflow: hidden;
  max-height: 16px;
  opacity: 1;
  transition: max-height .2s ease, opacity .2s ease;
}

.site-header[data-stuck] .masthead__inner { padding-block: 6px; }
.site-header[data-stuck] .masthead__meta--left { opacity: 0; visibility: hidden; }
.site-header[data-stuck] .masthead__mark { font-size: clamp(20px, 2.4vw, 26px); }
.site-header[data-stuck] .masthead__sub { max-height: 0; opacity: 0; }
.site-header[data-stuck] .masthead__cta { min-height: 36px; padding: 6px 14px; font-size: 13px; }

.nav-bar {
  position: relative;
  background: var(--cream);
  border-bottom: 1px solid var(--ink-green);
}

.nav-bar__inner { display: flex; justify-content: center; }

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(2px, 1.2vw, 16px);
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 10px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--moss);
  transition: color .18s ease, background-color .18s ease, min-height .2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 7px;
  height: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .18s ease;
}

.nav-link:hover { color: var(--charcoal); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link:focus-visible::after { transform: scaleX(1); }

.nav-link[aria-current="page"] {
  color: var(--ink-green);
  font-weight: 700;
  background: var(--lime-wash);
  box-shadow: inset 0 -2px 0 var(--lime);
}

.nav-link[aria-current="page"]::after { transform: scaleX(0); }

.site-header[data-stuck] .nav-link { min-height: 38px; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--ink-green);
  background: var(--warm-white);
  border: 1px solid var(--ink-green);
  border-radius: var(--radius);
  transition: background-color .16s ease, color .16s ease;
}

.nav-toggle:hover { background: var(--lime-wash); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink-green);
  transition: background-color .16s ease;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--ink-green);
  transition: transform .16s ease, top .16s ease;
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

.nav-drawer { display: none; }

/* ---------- 左侧档案索引 ---------- */

.index-rail {
  position: fixed;
  left: 16px;
  top: 50%;
  z-index: 90;
  width: 150px;
  padding: 12px 12px 14px;
  background: rgba(251, 248, 241, .96);
  border: 1px solid rgba(14, 42, 34, .22);
  border-left: 3px solid var(--lime);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(14, 42, 34, .12);
  opacity: 0;
  visibility: hidden;
  transform: translate(-18px, -50%);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
}

.index-rail[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translate(0, -50%);
}

.index-rail__title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 8px;
}

.index-rail__list { display: flex; flex-direction: column; }

.index-rail__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 4px;
  font-size: 13px;
  color: var(--charcoal);
  border-bottom: 1px solid rgba(14, 42, 34, .1);
  transition: background-color .16s ease, color .16s ease;
}

.index-rail__list li:last-child a { border-bottom: 0; }
.index-rail__list a:hover { background: var(--lime-wash); color: var(--ink-green); }

.index-rail__num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--moss);
}

/* ---------- 站点页脚 ---------- */

.site-footer {
  background: var(--ink-green);
  color: var(--warm-white);
  border-top: 3px solid var(--lime);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: clamp(24px, 3.4vw, 52px);
  padding-block: clamp(40px, 6vw, 72px) clamp(32px, 4vw, 48px);
}

.footer-brand__mark {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--warm-white);
}

.footer-brand__line {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--lime);
}

.footer-brand__stat {
  margin-top: 16px;
  font-size: 14px;
  color: var(--mist);
}

.footer-brand__stamp {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cool-grey);
}

.footer-brand__feedback {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--lime);
  border: 1px solid rgba(200, 247, 81, .6);
  border-radius: var(--radius);
  transition: background-color .18s ease, color .18s ease;
}

.footer-brand__feedback:hover {
  background: var(--lime);
  color: var(--ink-green);
}

.footer-brand__note {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--cool-grey);
  max-width: 26em;
}

.footer-col__title {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--lime);
}

.footer-col__title::before {
  content: "";
  width: 12px;
  height: 2px;
  background: var(--signal);
  flex: none;
}

.footer-list { display: flex; flex-direction: column; gap: 9px; }

.footer-link {
  position: relative;
  display: inline-block;
  font-size: 14px;
  color: var(--mist);
  transition: color .18s ease;
}

.footer-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .18s ease;
}

.footer-link:hover { color: var(--warm-white); }
.footer-link:hover::after { transform: scaleX(1); }
.footer-link:focus-visible::after { transform: scaleX(1); }

.footer-contact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 32px);
  padding-block: 22px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.footer-contact__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cool-grey);
}

.footer-contact__value {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--warm-white);
  word-break: break-all;
}

.footer-contact__note {
  grid-column: 1 / -1;
  font-size: 12px;
  line-height: 1.7;
  color: var(--cool-grey);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
  border: 1px solid rgba(251, 248, 241, .35);
  border-radius: var(--radius);
  transition: background-color .16s ease, color .16s ease, border-color .16s ease;
}

.copy-btn:hover {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-green);
}

.copy-btn[data-copied] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-green);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-block: 18px 30px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cool-grey);
}

.footer-legal__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.footer-legal__links a { transition: color .16s ease; }
.footer-legal__links a:hover { color: var(--lime); }

.to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 95;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--ink-green);
  background: var(--warm-white);
  border: 1px solid var(--ink-green);
  border-radius: 50%;
  box-shadow: 0 8px 22px rgba(14, 42, 34, .18);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s ease, background-color .16s ease;
}

.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover { background: var(--lime); }

/* ---------- 网格 ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 1.6vw, 24px);
}

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

/* ---------- 标签与筛选 ---------- */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 6px 13px;
  font-size: 13px;
  color: var(--charcoal);
  background: var(--warm-white);
  border: 1px solid rgba(14, 42, 34, .22);
  border-radius: 999px;
  transition: background-color .16s ease, border-color .16s ease, color .16s ease, box-shadow .16s ease;
}

.chip:hover {
  background: var(--lime-wash);
  border-color: var(--ink-green);
}

.chip[aria-pressed="true"] {
  background: var(--lime-wash);
  border-color: var(--ink-green);
  color: var(--ink-green);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--lime);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-green);
  background: var(--mist);
  border-radius: var(--radius);
}

.tag--lime { background: var(--lime); color: var(--ink-green); }
.tag--signal { background: var(--signal); color: var(--warm-white); }
.tag--ink { background: var(--ink-green); color: var(--lime); }

/* ---------- 图片容器（页面阶段放 <img>） ---------- */

.img-frame {
  position: relative;
  overflow: hidden;
  background-color: var(--mist);
  background-image: repeating-linear-gradient(135deg, rgba(14, 42, 34, .09) 0 1px, transparent 1px 9px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(160deg, rgba(14, 42, 34, .16), transparent 52%, rgba(228, 87, 46, .12));
  mix-blend-mode: multiply;
}

.img-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.04);
}

.img-frame--wide { aspect-ratio: 16 / 7; }
.img-frame--band { aspect-ratio: 21 / 6; }
.img-frame--tall { aspect-ratio: 4 / 5; }
.img-frame--square { aspect-ratio: 1 / 1; }

.section--ink .img-frame { border-color: rgba(251, 248, 241, .22); }

/* ---------- 正文容器 ---------- */

.prose {
  max-width: 64ch;
  font-size: 16.5px;
  line-height: 1.85;
}

.prose > * + * { margin-top: 1em; }

.prose h2 {
  margin-top: 1.9em;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
}

.prose h3 {
  margin-top: 1.7em;
  font-size: 1.2rem;
  letter-spacing: 0;
}

.prose ul { padding-left: 0; }

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

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 9px;
  height: 2px;
  background: var(--signal);
}

.prose a {
  color: var(--ink-green);
  text-decoration: underline;
  text-decoration-color: var(--lime);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

.prose blockquote {
  margin-top: 1.6em;
  padding: 18px 22px;
  font-size: 1.05rem;
  color: var(--brown-black);
  background: var(--warm-white);
  border-left: 3px solid var(--lime);
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  padding-block: 14px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--moss);
}

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

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--cool-grey);
}

.breadcrumb a:hover {
  color: var(--ink-green);
  text-decoration: underline;
  text-decoration-color: var(--lime);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

/* ---------- 响应式 ---------- */

@media (max-width: 1280px) {
  .index-rail { display: none; }
}

@media (max-width: 1100px) {
  .masthead__desc { display: none; }
}

@media (max-width: 900px) {
  .site-header { --header-pad: 12px; }

  .masthead__inner {
    grid-template-columns: 1fr auto;
    gap: 12px;
  }

  .masthead__meta--left { display: none; }

  .masthead__brand {
    align-items: flex-start;
    padding-inline: 0;
    text-align: left;
    grid-column: 1;
    grid-row: 1;
  }

  .masthead__meta--right {
    grid-column: 2;
    grid-row: 1;
  }

  .masthead__cta { display: none; }
  .nav-toggle { display: inline-flex; }

  .nav-bar {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    background: var(--ink-green);
    border-bottom: 1px solid var(--ink-green);
    max-height: calc(100vh - 72px);
    max-height: calc(100dvh - 72px);
    overflow-y: auto;
    box-shadow: 0 18px 40px rgba(14, 42, 34, .28);
  }

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

  .nav-bar__inner {
    display: block;
    padding-inline: 0;
    padding-block: 6px 0;
  }

  .nav-list { display: block; }

  .nav-link {
    display: flex;
    justify-content: space-between;
    min-height: 52px;
    padding: 0 var(--gutter);
    font-size: 15px;
    letter-spacing: .12em;
    color: var(--warm-white);
    border-bottom: 1px solid rgba(251, 248, 241, .14);
  }

  .nav-link::after { display: none; }
  .nav-link:hover { color: var(--lime); }

  .nav-link[aria-current="page"] {
    background: rgba(200, 247, 81, .14);
    color: var(--lime);
    box-shadow: inset 3px 0 0 var(--lime);
  }

  .site-header[data-stuck] .nav-link { min-height: 52px; }

  .nav-drawer {
    display: block;
    padding: 18px var(--gutter) 22px;
    border-top: 1px solid rgba(251, 248, 241, .18);
    color: var(--warm-white);
  }

  .nav-drawer__title {
    margin-bottom: 8px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--lime);
  }

  .nav-drawer__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 18px;
    margin-bottom: 16px;
  }

  .nav-drawer__list a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 0;
    font-size: 14px;
    color: var(--mist);
    border-bottom: 1px solid rgba(251, 248, 241, .16);
  }

  .nav-drawer__list a:hover { color: var(--lime); }

  .nav-drawer__list span {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--cool-grey);
  }

  .nav-drawer__cta { margin-bottom: 10px; }

  .nav-drawer__note {
    font-size: 12px;
    line-height: 1.7;
    color: var(--cool-grey);
  }

  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-contact { grid-template-columns: 1fr 1fr; }

  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: span 12; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }

  .masthead__mark { font-size: 26px; }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-contact { grid-template-columns: 1fr; }
  .footer-legal { font-size: 10px; }
  .to-top { right: 12px; bottom: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .index-rail { transition: none; transform: translate(0, -50%); }
  .to-top { transition: none; }
}