/* ===== 博鱼主页 · 共享外壳样式 /assets/site.css ===== */

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

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

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

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

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

button {
  font: inherit;
  color: inherit;
  border-radius: 0;
}

a {
  color: inherit;
}

/* ---- tokens ---- */
:root {
  --ink: #061826;
  --ink-2: #0C2A40;
  --ink-3: #173B52;
  --stone: #6F7F86;
  --cyan: #2DE2D0;
  --coral: #FF6B4A;
  --moss: #7FA37A;
  --clay: #C97A5A;
  --cream: #F4EFE4;
  --mist: #B7C8D2;
  --glow: #D6FFF9;
  --deep: #03101A;

  --line: rgba(111, 127, 134, 0.45);
  --line-soft: rgba(111, 127, 134, 0.22);
  --line-cyan: rgba(45, 226, 208, 0.45);

  --shell: 1180px;
  --gutter: clamp(1rem, 3vw, 2rem);
  --radius: 2px;

  --panel-shadow: 8px 8px 0 rgba(3, 16, 26, 0.72), 11px 11px 0 -2px rgba(45, 226, 208, 0.14);
  --panel-shadow-lift: 12px 12px 0 rgba(3, 16, 26, 0.8), 16px 16px 0 -2px rgba(45, 226, 208, 0.2);

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

/* ---- base typography ---- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.8;
  color: var(--cream);
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(45, 226, 208, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(45, 226, 208, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--glow);
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5.4rem);
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

h3 {
  font-size: clamp(1.15rem, 1.6vw, 1.375rem);
  letter-spacing: -0.01em;
}

h4 {
  font-size: 1rem;
  letter-spacing: 0;
}

p {
  max-width: 68ch;
}

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

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--glow);
}

::selection {
  background: var(--cyan);
  color: var(--deep);
}

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

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

.section {
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.section-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--coral);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 1.5px;
  background: var(--cyan);
}

.lede {
  font-size: clamp(1.0625rem, 0.85rem + 1.1vw, 1.25rem);
  line-height: 1.75;
  color: var(--mist);
  max-width: 62ch;
}

.rule {
  height: 1px;
  border: 0;
  margin-block: clamp(1.5rem, 3vw, 2.5rem);
  background: linear-gradient(90deg, var(--line-cyan), rgba(111, 127, 134, 0.18) 60%, transparent);
}

/* ---- buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.35rem;
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease-out, background-color 180ms ease-out,
    border-color 180ms ease-out, color 180ms ease-out, box-shadow 180ms ease-out;
}

.btn:hover {
  transform: translate(-1px, -1px);
}

.btn--primary {
  background: var(--coral);
  border-color: var(--coral);
  color: #1B0A04;
  box-shadow: 4px 4px 0 rgba(3, 16, 26, 0.75);
}

.btn--primary:hover {
  background: #FF8466;
  border-color: #FF8466;
  color: #1B0A04;
  box-shadow: 6px 6px 0 rgba(3, 16, 26, 0.8);
}

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

.btn--ghost:hover {
  background: rgba(45, 226, 208, 0.12);
  border-color: var(--cyan);
  color: var(--glow);
}

/* ---- chips ---- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.6rem;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  background: rgba(45, 226, 208, 0.08);
  color: var(--glow);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.chip--coral {
  border-color: rgba(255, 107, 74, 0.5);
  background: rgba(255, 107, 74, 0.13);
  color: #FFB7A4;
}

.chip--moss {
  border-color: rgba(127, 163, 122, 0.55);
  background: rgba(127, 163, 122, 0.15);
  color: #BFDAB8;
}

.chip--clay {
  border-color: rgba(201, 122, 90, 0.5);
  background: rgba(201, 122, 90, 0.15);
  color: #E9BBA4;
}

/* ---- panels ---- */
.panel {
  position: relative;
  padding: clamp(1.1rem, 2vw, 1.6rem);
  background: var(--ink-2);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--panel-shadow);
  transition: transform 200ms ease-out, box-shadow 200ms ease-out, border-color 200ms ease-out;
}

.panel:hover {
  transform: translate(-2px, -3px);
  border-color: var(--line-cyan);
  box-shadow: var(--panel-shadow-lift);
}

.panel--flat {
  background: var(--ink-3);
  box-shadow: none;
}

.panel--flat:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--line-cyan);
}

/* ---- grids ---- */
.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}

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

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

/* ---- media frames ---- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--ink-3), var(--ink-2));
}

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

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

.media-frame--tall {
  aspect-ratio: 4 / 5;
}

.media-frame--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(45, 226, 208, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(45, 226, 208, 0.16) 1px, transparent 1px);
  background-size: 32px 32px;
}

.media-caption {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--stone);
}

/* ---- breadcrumb ---- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-block: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--stone);
}

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

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

.breadcrumb-sep {
  color: var(--stone);
  opacity: 0.6;
}

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

/* ---- prose ---- */
.prose {
  max-width: 68ch;
}

.prose p {
  margin-bottom: 1.1em;
}

.prose h3 {
  margin: 1.8em 0 0.6em;
}

.prose ul,
.prose ol {
  margin-bottom: 1.1em;
  padding-left: 1.25rem;
}

.prose ul {
  list-style: square;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 0.4em;
}

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

/* ---- stats ---- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--cyan);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 2.4vw, 1.9rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--glow);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
}

/* ---- table ---- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 0.9rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.data-table thead th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(23, 59, 82, 0.6);
  border-bottom: 1.5px solid var(--line-cyan);
}

.data-table tbody tr:hover {
  background: rgba(45, 226, 208, 0.05);
}

/* ---- notice ---- */
.notice {
  display: flex;
  gap: 0.9rem;
  padding: 1rem 1.15rem;
  border: 1.5px solid var(--line-cyan);
  border-left-width: 4px;
  border-radius: var(--radius);
  background: rgba(45, 226, 208, 0.06);
  font-size: 0.9375rem;
  color: var(--mist);
}

.notice--coral {
  border-color: rgba(255, 107, 74, 0.45);
  border-left-color: var(--coral);
  background: rgba(255, 107, 74, 0.08);
}

/* ---- reveal hook ---- */
.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 220ms ease-out, transform 220ms ease-out;
}

.has-reveal [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ================= HEADER ================= */
.site-header {
  position: relative;
  z-index: 60;
  isolation: isolate;
  background: linear-gradient(180deg, var(--deep) 0%, var(--ink) 58%, var(--ink) 100%);
  border-bottom: 1.5px solid var(--line);
}

.skip-link {
  position: absolute;
  top: -120px;
  left: var(--gutter);
  z-index: 200;
  display: inline-block;
  padding: 0.75rem 1.25rem;
  background: var(--cyan);
  border: 1.5px solid var(--glow);
  color: var(--deep);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: top 160ms ease-out;
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 0.75rem;
  color: var(--deep);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 120;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
}

.header-rail {
  background: rgba(3, 16, 26, 0.92);
  border-bottom: 1px solid var(--line-soft);
}

.rail-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 0.55rem var(--gutter);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.rail-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--glow);
  font-weight: 700;
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(45, 226, 208, 0.16);
  animation: status-pulse 1.8s ease-out infinite;
}

@keyframes status-pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.8);
  }
}

.rail-meta {
  color: var(--stone);
}

.rail-meta--push {
  margin-left: auto;
}

.masthead {
  padding: clamp(1.5rem, 3vw, 2.4rem) var(--gutter) clamp(1.1rem, 2vw, 1.5rem);
}

.masthead-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  text-align: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
  color: var(--cream);
}

.brand:hover {
  color: var(--glow);
}

.brand-mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 2.6rem;
  height: 2.6rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1;
  color: var(--deep);
  background: linear-gradient(150deg, var(--glow), var(--cyan) 62%, #14A99B);
  border: 1.5px solid var(--glow);
  clip-path: polygon(0 0, 100% 0, 100% 62%, 62% 100%, 0 100%);
  transition: filter 180ms ease-out;
}

.brand:hover .brand-mark {
  filter: brightness(1.12);
}

.brand-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
}

.brand-name {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--glow);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.masthead-tagline {
  max-width: 52ch;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.8rem;
  background: rgba(23, 59, 82, 0.85);
  border: 1.5px solid var(--stone);
  border-radius: var(--radius);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 180ms ease-out, color 180ms ease-out, background-color 180ms ease-out;
}

.nav-toggle:hover {
  border-color: var(--cyan);
  color: var(--glow);
  background: rgba(45, 226, 208, 0.12);
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--coral);
  color: var(--glow);
  background: rgba(255, 107, 74, 0.16);
}

.nav-toggle-label {
  line-height: 1;
}

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 16px;
  height: 12px;
}

.nav-toggle-bars i {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform 180ms ease-out, opacity 180ms ease-out;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.main-nav {
  background: rgba(12, 42, 64, 0.72);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.15rem;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.nav-item {
  display: block;
}

.nav-link {
  position: relative;
  display: block;
  padding: 0.9rem 1.15rem;
  border-bottom: 2px solid transparent;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--mist);
  text-decoration: none;
  transition: color 180ms ease-out, background-color 180ms ease-out, border-color 180ms ease-out;
}

.nav-link:hover {
  color: var(--glow);
  background: rgba(45, 226, 208, 0.08);
  border-bottom-color: rgba(45, 226, 208, 0.55);
}

.nav-link[aria-current="page"] {
  color: var(--glow);
  background: linear-gradient(180deg, rgba(255, 107, 74, 0), rgba(255, 107, 74, 0.16));
  border-bottom-color: var(--coral);
}

/* ================= FOOTER ================= */
.site-footer {
  position: relative;
  margin-top: clamp(2.5rem, 5vw, 4rem);
  background: var(--deep);
  border-top: 1px solid rgba(45, 226, 208, 0.3);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(45, 226, 208, 0.18) 42%, var(--coral) 100%);
}

.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(2.5rem, 5vw, 4rem) var(--gutter) 1.5rem;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: 2.25rem;
  border-bottom: 1px solid var(--line-soft);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-mark {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 900;
  line-height: 1;
  color: var(--deep);
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% 65%, 65% 100%, 0 100%);
}

.footer-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--glow);
}

.footer-summary {
  max-width: 44ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mist);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.footer-link {
  display: inline-block;
  padding: 0.1rem 0;
  font-size: 0.9375rem;
  color: var(--mist);
  text-decoration: none;
  transition: color 180ms ease-out, transform 180ms ease-out;
}

.footer-link:hover {
  color: var(--glow);
  transform: translateX(3px);
}

.footer-contact {
  display: grid;
  gap: 0.9rem;
  padding-block: 2rem;
  border-bottom: 1px solid var(--line-soft);
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem 2rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--stone);
}

.contact-value {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.contact-note {
  max-width: 70ch;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--stone);
  margin-top: 0.25rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  padding-top: 1.4rem;
}

.footer-fine {
  max-width: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.footer-icp {
  max-width: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-left: auto;
  padding: 0.55rem 0.9rem;
  background: transparent;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 180ms ease-out, color 180ms ease-out, background-color 180ms ease-out;
}

.to-top:hover {
  border-color: var(--cyan);
  color: var(--glow);
  background: rgba(45, 226, 208, 0.1);
}

/* ================= RESPONSIVE ================= */
@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
    position: absolute;
    top: 0;
    right: 0;
  }

  .masthead-inner {
    align-items: flex-start;
    padding-right: 6.5rem;
    text-align: left;
  }

  .main-nav {
    display: none;
    border-top: 1px solid var(--line-soft);
  }

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

  .nav-list {
    flex-direction: column;
    justify-content: flex-start;
    gap: 0;
    padding-inline: 0;
  }

  .nav-link {
    padding: 0.95rem var(--gutter);
    font-size: 0.9375rem;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--line-soft);
  }

  .nav-link[aria-current="page"] {
    background: rgba(255, 107, 74, 0.1);
    border-bottom-color: var(--line-soft);
    box-shadow: inset 3px 0 0 var(--coral);
  }

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

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

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

@media (max-width: 640px) {
  .rail-meta--push {
    display: none;
  }

  .masthead-tagline {
    font-size: 0.6875rem;
  }

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

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

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .to-top {
    margin-left: 0;
  }

  .data-table thead {
    display: none;
  }

  .data-table tr {
    display: block;
    margin-bottom: 0.75rem;
    background: rgba(23, 59, 82, 0.55);
    border: 1.5px solid var(--line);
    border-radius: var(--radius);
  }

  .data-table td {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--line-soft);
  }

  .data-table td::before {
    content: attr(data-label);
    flex: none;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--cyan);
  }
}

/* ================= 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;
  }

  .status-dot {
    animation: none;
  }

  .has-reveal [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .panel:hover,
  .btn:hover,
  .footer-link:hover {
    transform: none;
  }
}