:root {
  --sea: #061826;
  --sea-2: #0B2438;
  --paper: #F2E6D0;
  --ink: #18120F;
  --ink-soft: #5C4A42;
  --cyan: #35E0CE;
  --coral: #FF6A4D;
  --amber: #FFC857;
  --mist: #9CB6C6;
  --glass: #1F5B68;
  --alert: #B64435;

  --edge: 2px;
  --edge-bold: 4px;
  --radius: 2px;
  --shadow-hard: 6px 6px 0 rgba(2, 10, 17, 0.72);
  --shadow-paper: 6px 6px 0 var(--ink);
  --shadow-soft: 0 14px 30px rgba(2, 10, 17, 0.4);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
  --font-body: var(--font-display);
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --shell: 1220px;
  --pad-x: clamp(1rem, 3vw, 2rem);
  --gap-1: 0.5rem;
  --gap-2: 0.75rem;
  --gap-3: 1rem;
  --gap-4: 1.5rem;
  --gap-5: 2.5rem;
  --gap-6: 4rem;
}

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

html {
  background: var(--sea);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--sea);
  background-image:
    radial-gradient(circle at 12% -8%, rgba(53, 224, 206, 0.13), transparent 45%),
    radial-gradient(circle at 92% 6%, rgba(255, 106, 77, 0.1), transparent 42%),
    repeating-linear-gradient(0deg, rgba(31, 91, 104, 0.16) 0 1px, transparent 1px 64px);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2.75rem, 6.4vw, 5.5rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.6rem); }
h4 { font-size: clamp(1.05rem, 1.4vw, 1.2rem); }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 1em; padding-left: 1.25em; }

a { color: var(--cyan); }

button { font: inherit; }

strong { font-weight: 800; }

small { font-size: 0.8125rem; }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--ink);
}

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

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

[data-hidden] { display: none !important; }

.skip-link {
  position: absolute;
  left: var(--pad-x);
  top: -4.5rem;
  z-index: 200;
  padding: 0.6rem 1.1rem;
  background: var(--amber);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 800;
  text-decoration: none;
  border: var(--edge) solid var(--ink);
  box-shadow: var(--shadow-paper);
  transition: top 0.15s ease;
}

.skip-link:focus { top: 0.6rem; }

.container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.container--narrow { max-width: 780px; }
.container--wide { max-width: 1440px; }

.section { padding-block: clamp(2.5rem, 6vw, 5rem); }

.section--paper {
  background: var(--paper);
  color: var(--ink);
  border-block: var(--edge-bold) solid var(--ink);
}

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

.section--paper a { color: var(--ink); }

.section--band {
  background: var(--coral);
  color: var(--ink);
  border-block: var(--edge-bold) solid var(--ink);
}

.section--band h2,
.section--band h3 { color: var(--ink); }

.section--deep {
  background: var(--sea-2);
  border-block: var(--edge) solid var(--glass);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section-label::before {
  content: "";
  width: 1.6rem;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
}

.section--paper .section-label { color: var(--alert); }
.section--band .section-label { color: var(--ink); }

.measure { max-width: 38em; }

.link-underline {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--coral);
  padding-bottom: 1px;
}

.link-underline:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-2);
  margin-top: var(--gap-4);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.62rem 1.1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9375rem;
  line-height: 1.2;
  color: var(--ink);
  background: var(--paper);
  border: var(--edge) solid var(--ink);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-paper);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 8px 8px 0 var(--ink);
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn--primary { background: var(--coral); }

.btn--primary:hover { background: var(--amber); }

.btn--quick {
  padding: 0.5rem 0.9rem;
  font-size: 0.875rem;
  background: var(--coral);
  box-shadow: 4px 4px 0 rgba(2, 10, 17, 0.78);
}

.btn--quick:hover { box-shadow: 6px 6px 0 rgba(2, 10, 17, 0.85); }

.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--cyan);
  box-shadow: none;
}

.btn--ghost:hover {
  background: rgba(53, 224, 206, 0.14);
  box-shadow: 4px 4px 0 rgba(2, 10, 17, 0.6);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(6, 24, 38, 0.94);
  border-bottom: var(--edge) solid var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.cmd-bar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas: "brand nav actions";
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.75rem);
  max-width: var(--shell);
  margin-inline: auto;
  padding: 0.7rem var(--pad-x);
}

.cmd-brand {
  grid-area: brand;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--paper);
  text-decoration: none;
}

.brand-mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border: var(--edge) solid var(--cyan);
  background: linear-gradient(135deg, rgba(53, 224, 206, 0.2), rgba(255, 106, 77, 0.22));
  box-shadow: 3px 3px 0 rgba(2, 10, 17, 0.7);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.brand-mark__dot {
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 2px var(--sea);
}

.brand-lockup:hover .brand-mark { border-color: var(--amber); }

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.12;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.0625rem;
  letter-spacing: 0.02em;
}

.brand-sub {
  margin-top: 0.22rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.brand-status {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  padding-left: 0.85rem;
  border-left: 1px solid var(--glass);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--mist);
  white-space: nowrap;
}

.status-dot {
  display: inline-block;
  flex: none;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--mist);
  box-shadow: 0 0 0 3px rgba(156, 182, 198, 0.14);
}

.status-dot[data-tone="live"] {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 224, 206, 0.18);
}

.status-dot[data-tone="rule"] {
  background: var(--amber);
  box-shadow: 0 0 0 3px rgba(255, 200, 87, 0.18);
}

.status-dot[data-tone="moved"] {
  background: var(--alert);
  box-shadow: 0 0 0 3px rgba(182, 68, 53, 0.22);
}

.primary-nav {
  grid-area: nav;
  justify-self: center;
  display: block;
  min-width: 0;
}

.primary-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav__item { display: block; }

.primary-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.48rem 0.6rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--mist);
  text-decoration: none;
  border: var(--edge) solid transparent;
  border-radius: var(--radius);
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.primary-nav__link:hover,
.primary-nav__link:focus-visible {
  color: var(--paper);
  background: rgba(53, 224, 206, 0.09);
  border-color: var(--glass);
}

.nav-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.primary-nav__link:hover .nav-num { color: var(--amber); }

.primary-nav__link[aria-current="page"] {
  color: var(--paper);
  border-color: var(--cyan);
  background: rgba(53, 224, 206, 0.12);
  box-shadow: inset 0 -2px 0 var(--coral);
}

.primary-nav__link[aria-current="page"] .nav-num { color: var(--amber); }

.nav-toggle {
  grid-area: toggle;
  display: none;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.7rem;
  color: var(--paper);
  background: transparent;
  border: var(--edge) solid var(--glass);
  border-radius: var(--radius);
  cursor: pointer;
}

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

.nav-toggle__glyph {
  display: grid;
  gap: 3px;
  width: 1.05rem;
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  background: var(--cyan);
}

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--coral);
  background: rgba(255, 106, 77, 0.14);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: var(--coral); }

.cmd-actions {
  grid-area: actions;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.cmd-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  overflow: hidden;
  background: rgba(31, 91, 104, 0.45);
  pointer-events: none;
}

.cmd-progress__fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
  transition: width 0.08s linear;
}

.site-footer {
  position: relative;
  background: linear-gradient(180deg, var(--sea-2), #04121d 88%);
  border-top: var(--edge-bold) solid var(--glass);
  color: var(--paper);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cyan), var(--coral), var(--amber));
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) repeat(2, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(2.25rem, 5vw, 3.5rem) var(--pad-x) clamp(1.5rem, 3vw, 2.25rem);
}

.footer-brand__mark {
  display: block;
  width: 2.6rem;
  height: 0.35rem;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
}

.footer-brand__name {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.footer-brand__note {
  max-width: 26em;
  margin: 0 0 1rem;
  color: var(--mist);
  font-size: 0.9375rem;
}

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

.footer-heading {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.footer-list {
  margin: 0 0 0.75rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.footer-list--contact { gap: 0.7rem; }

.footer-link {
  color: var(--mist);
  font-size: 0.9375rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

.footer-link--strong {
  display: inline-block;
  color: var(--paper);
  font-weight: 700;
  border-bottom: 2px solid var(--coral);
}

.contact-line {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.contact-line__label { color: var(--cyan); }

.footer-legal {
  max-width: var(--shell);
  margin-inline: auto;
  padding: 1.25rem var(--pad-x) 2rem;
  border-top: 1px solid rgba(31, 91, 104, 0.75);
  display: grid;
  gap: 0.5rem;
}

.footer-icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--paper);
}

.footer-region {
  margin: 0;
  max-width: 52em;
  font-size: 0.8125rem;
  color: var(--mist);
}

.footer-copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(156, 182, 198, 0.8);
}

.breadcrumbs {
  padding-block: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.section--paper .breadcrumbs { color: var(--ink-soft); }

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs__list li + li::before {
  content: "/";
  margin-right: 0.55rem;
  color: var(--glass);
}

.section--paper .breadcrumbs__list li + li::before { color: rgba(24, 18, 15, 0.35); }

.breadcrumbs__link {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.breadcrumbs__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--coral);
}

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

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

.grid {
  display: grid;
  gap: var(--gap-4);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  position: relative;
  padding: clamp(1rem, 2vw, 1.5rem);
  background: var(--sea-2);
  border: var(--edge) solid var(--glass);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.card:hover {
  border-color: var(--cyan);
  box-shadow: var(--shadow-hard);
}

.card--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: var(--shadow-paper);
}

.card--paper:hover {
  border-color: var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
}

.card--paper a { color: var(--ink); }

.card__meta {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.card--paper .card__meta { color: var(--ink-soft); }

.card-rail { margin-block: var(--gap-4); }

.card-rail__track {
  display: flex;
  gap: var(--gap-3);
  margin: 0;
  padding: 0 0 0.9rem;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-color: var(--glass) transparent;
  scrollbar-width: thin;
}

.card-rail__track::-webkit-scrollbar { height: 8px; }
.card-rail__track::-webkit-scrollbar-thumb { background: var(--glass); }

.card-rail__item {
  flex: 0 0 min(78vw, 20rem);
  scroll-snap-align: start;
}

.index-rail {
  margin: 0;
  padding: 0 0 0 var(--gap-2);
  list-style: none;
  display: grid;
  gap: 0.35rem;
  border-left: var(--edge) solid var(--glass);
}

.index-rail__link {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-left: -2px;
  padding: 0.5rem 0.7rem;
  color: var(--mist);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.index-rail__link:hover,
.index-rail__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--cyan);
  background: rgba(53, 224, 206, 0.08);
}

.index-rail__link[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--coral);
  background: rgba(255, 106, 77, 0.1);
}

.index-rail__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mist);
  background: rgba(31, 91, 104, 0.2);
  border: 1px solid var(--glass);
  border-radius: 999px;
  text-decoration: none;
  transition: transform 0.12s ease, opacity 0.12s ease, border-color 0.15s ease;
}

.tag:hover {
  transform: translateY(-2px);
  opacity: 0.95;
  border-color: var(--cyan);
}

.tag--cyan {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(53, 224, 206, 0.1);
}

.tag--coral {
  color: var(--coral);
  border-color: var(--coral);
  background: rgba(255, 106, 77, 0.1);
}

.tag--amber {
  color: var(--amber);
  border-color: var(--amber);
  background: rgba(255, 200, 87, 0.1);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--gap-4);
}

.filter-btn {
  padding: 0.42rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--mist);
  background: transparent;
  border: var(--edge) solid var(--glass);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

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

.filter-btn[aria-pressed="true"] {
  color: var(--sea);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.rule-block {
  margin-block: 0 var(--gap-3);
  padding: 1rem 1.15rem;
  background: rgba(11, 36, 56, 0.62);
  border: var(--edge) solid var(--glass);
  border-left: var(--edge-bold) solid var(--cyan);
  border-radius: var(--radius);
}

.section--paper .rule-block {
  background: rgba(24, 18, 15, 0.05);
  border-color: rgba(24, 18, 15, 0.35);
  border-left-color: var(--alert);
}

.rule-block__num {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.section--paper .rule-block__num { color: var(--alert); }

.rule-note {
  margin-block: var(--gap-3);
  padding-left: 0.85rem;
  border-left: 2px solid var(--glass);
  font-size: 0.875rem;
  color: var(--mist);
}

.section--paper .rule-note {
  border-left-color: rgba(24, 18, 15, 0.35);
  color: var(--ink-soft);
}

.media-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--sea-2);
  border: var(--edge) solid var(--glass);
  border-radius: var(--radius);
}

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(53, 224, 206, 0.22) 1px, transparent 1px);
  background-size: 6px 6px;
  opacity: 0.35;
  pointer-events: none;
  mix-blend-mode: screen;
}

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

.media-frame--paper {
  border-color: var(--ink);
  box-shadow: var(--shadow-paper);
}

.media-frame--paper::after { mix-blend-mode: multiply; opacity: 0.22; }

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  margin: 0;
  padding: 0.55rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--paper);
  background: rgba(6, 24, 38, 0.82);
  border-top: 1px solid var(--glass);
}

.media-frame--paper .media-frame__caption {
  color: var(--paper);
  background: rgba(24, 18, 15, 0.86);
  border-top-color: var(--ink);
}

@media (max-width: 1024px) {
  .brand-status { display: none; }
}

@media (max-width: 900px) {
  .cmd-bar {
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas:
      "brand toggle actions"
      "nav nav nav";
    row-gap: 0.5rem;
    padding-block: 0.65rem;
  }

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

  .primary-nav {
    display: none;
    justify-self: stretch;
    padding-top: 0.55rem;
    border-top: var(--edge) solid var(--glass);
    max-height: min(68vh, 26rem);
    overflow-y: auto;
  }

  .primary-nav[data-open] {
    display: block;
    animation: nav-drop 0.16s ease-out;
  }

  .primary-nav__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0.15rem;
  }

  .primary-nav__link {
    display: flex;
    width: 100%;
    padding: 0.7rem 0.6rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(31, 91, 104, 0.55);
  }

  .primary-nav__link[aria-current="page"] { box-shadow: inset 3px 0 0 var(--coral); }

  .btn--quick { padding: 0.45rem 0.7rem; font-size: 0.8125rem; }

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

  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 700px) {
  body { font-size: 1rem; }
  h1 { font-size: clamp(2.5rem, 11vw, 3.4rem); }
  .brand-sub { display: none; }
  .card-rail__item { flex-basis: min(84vw, 18rem); }
  .contact-line { grid-template-columns: 2.9rem minmax(0, 1fr); }
  .section { padding-block: clamp(2rem, 8vw, 3rem); }
}

@media (max-width: 420px) {
  .cmd-actions .btn--quick { padding: 0.4rem 0.6rem; }
  .footer-legal { padding-bottom: 1.5rem; }
}

@keyframes nav-drop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

@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;
  }
}