:root {
  color-scheme: dark;
  --navy: #def6ff;
  --cyan: #5eddf5;
  --text-dark: #eaf8ff;
  --text-mid: #a8cfe1;
  --text-dim: #78a7bf;
  --bg: #071a34;
  --bg-soft: #0b294a;
  --bg-alt: #09213f;
  --bg-footer: #020c20;
  --bg-cover: #04132b;
  --bg-stage: #082544;
  --card: #0d2d4e;
  --nav-bg: #05172f;
  --nav-border: rgba(112, 218, 244, 0.16);
  --nav-hover: rgba(94, 221, 245, 0.14);
  --card-border: rgba(112, 218, 244, 0.22);
  --card-hover: #123b62;
  --link: #88eafa;
  --warning: #f4c96c;
  --route-domestic: #54e3c2;
  --route-overseas: #8aa7ff;
  --prose: #d8eef7;
  --article-bg: #06172f;
  --article-dialog-bg: #101b2b;
  --tool-bg: #0b2949;
  --header-h: 58px;
  --divider: rgba(112, 218, 244, 0.2);
  --shadow: rgba(0, 7, 25, 0.62);
  --illus-sky-1: #0b3b69;
  --illus-sky-2: #061c3a;
  --illus-sea-1: #12658c;
  --illus-sea-2: #0a3867;
  --illus-bed-1: #0b2c51;
  --illus-bed-2: #04152f;
  --illus-line: var(--navy);
  --illus-glow: #2d93b5;
  --illus-ink: #020a1d;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: auto;
  scroll-snap-type: y proximity;
}

html,
body {
  background: var(--bg);
  color: var(--text-dark);
  font-family: Arial, 'Noto Sans TC', sans-serif;
}

html {
  overflow-x: clip;
}

body {
  overflow-x: visible;
}

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

p {
  line-height: 1.4;
}

a {
  color: inherit;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 200;
  background: var(--card);
  padding: 8px 14px;
  border-radius: 8px;
}

.skip-link:focus {
  left: 8px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ── Site navbar ── */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: var(--header-h);
  padding: 0 28px;
  background: color-mix(in srgb, var(--nav-bg) 92%, transparent);
  border-bottom: 1px solid var(--nav-border);
  backdrop-filter: blur(14px) saturate(1.2);
}

.site-nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--navy);
  text-decoration: none;
  white-space: nowrap;
}

.site-nav-brand-logo {
  display: block;
  height: 29px;
  width: auto;
  flex-shrink: 0;
}

.site-nav-brand:hover {
  color: var(--cyan);
}

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

.site-nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13px;
  letter-spacing: 0.2px;
  color: var(--text-mid);
  text-decoration: none;
  white-space: nowrap;
}

.site-nav-links a:hover,
.site-nav-links a.is-active {
  color: var(--cyan);
  background: var(--nav-hover);
}

.site-nav-links > a[data-nav="cover"] {
  display: none;
}

.site-nav-ext {
  font-size: 11px;
  opacity: 0.7;
}

.site-nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.site-nav-current {
  display: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--navy);
}

.site-nav-burger,
.site-nav-burger::before,
.site-nav-burger::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--navy);
  border-radius: 1px;
}

.site-nav-burger {
  position: relative;
}

.site-nav-burger::before,
.site-nav-burger::after {
  content: '';
  position: absolute;
  left: 0;
}

.site-nav-burger::before {
  top: -6px;
}

.site-nav-burger::after {
  top: 6px;
}

.site-nav.is-open .site-nav-burger {
  background: transparent;
}

.site-nav.is-open .site-nav-burger::before {
  top: 0;
  transform: rotate(45deg);
}

.site-nav.is-open .site-nav-burger::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ── Cover ── */
.cover {
  position: relative;
  height: 100dvh;
  min-height: 100dvh;
  scroll-snap-align: start;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--header-h) 24px 88px;
  background: var(--bg-cover);
  color: var(--navy);
  text-align: center;
  overflow: hidden;
}

.cover-map {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.cover-map .maplibregl-map,
.cover-map .maplibregl-canvas,
.cover-map .maplibregl-canvas-container {
  width: 100%;
  height: 100%;
}

.cover-map-readout {
  margin: 0;
  padding: 6px 10px;
  background: color-mix(in srgb, var(--tool-bg) 88%, transparent);
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  font-size: 11px;
  font-family: Arial, 'Noto Sans TC', sans-serif;
  letter-spacing: 0;
  color: var(--text-mid);
  white-space: nowrap;
}

.cover-map-zoom {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--nav-border);
  background: var(--tool-bg);
  box-shadow: 0 4px 14px var(--shadow);
}

.cover-map-zoom button {
  width: 36px;
  height: 36px;
  font-size: 20px;
  line-height: 1;
  color: var(--navy);
}

.cover-map-zoom button + button {
  border-top: 1px solid var(--nav-border);
}

.cover-map-zoom button:hover {
  background: var(--card-hover);
  color: var(--cyan);
}

.cover-map-veil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 38%, rgba(79, 211, 239, 0.14) 0%, rgba(15, 91, 145, 0.2) 32%, transparent 64%),
    linear-gradient(180deg, rgba(2, 39, 84, 0.3) 0%, rgba(2, 12, 36, 0.68) 72%, var(--illus-sky-2) 100%);
}

.cover-map-attrib {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 2;
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  pointer-events: auto;
}

.cover-map-attrib a {
  color: inherit;
  text-decoration: none;
}

.cover-map-attrib a:hover {
  text-decoration: underline;
}

.cover-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  pointer-events: auto;
  user-select: text;
}

.cover-title {
  font-size: clamp(28px, 4.2vw, 42px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.35;
  text-shadow: 0 0 28px rgba(94, 221, 245, 0.14);
}

.cover-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  height: 1.5em;
  margin: 10px 0 0;
  font-size: clamp(16.2px, 2.16vw, 21.6px);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.3;
  color: var(--navy);
}

.cover-brand-logo {
  display: block;
  height: 2.5em;
  width: auto;
}

.cover-rule {
  display: flex;
  align-items: center;
  gap: 16px;
  width: min(560px, 100%);
  margin: 28px auto 32px;
  color: var(--navy);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.cover-rule::before,
.cover-rule::after {
  content: '';
  flex: 1;
  min-width: 0;
  height: 1px;
  background: currentColor;
}

.cover-lead {
  display: grid;
  gap: 14px;
  max-width: 580px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.035em;
  text-align: left;
  color: var(--navy);
}

.cover-lead p {
  margin: 0;
}

.cover-continue {
  margin-top: 4px;
}

.cover-continue a {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--cyan);
  text-decoration: none;
  font-weight: 500;
}

.cover-continue a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cover-continue i {
  font-size: 0.9em;
}

html.is-cover-preview,
html.is-cover-preview body {
  height: 100%;
  overflow: hidden;
}

html.is-cover-preview main > :not(#cover) {
  display: none !important;
}

html.is-cover-preview #cover {
  height: 100dvh;
  min-height: 100dvh;
}

.signal-journey .intro-stage {
  overflow: hidden;
}

.signal-journey-foreground,
.signal-journey-landscape {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
}

.signal-journey-landscape {
  z-index: 1;
  opacity: 0;
  will-change: opacity, transform;
}

.signal-journey-foreground {
  z-index: 2;
}

.signal-journey-foreground .intro-background {
  will-change: opacity;
}

.signal-journey-foreground #iphone {
  will-change: opacity, transform;
}

.signal-journey-foreground #basestation {
  will-change: transform;
}

.signal-journey-foreground #iphone > text,
.signal-journey-foreground #iphone > line,
.signal-journey-foreground #iphone > circle {
  opacity: 0;
}

.station-outbound-flow {
  will-change: d;
}

#phone-base-pair,
.journey-world {
  will-change: transform;
}

.panel.signal-panel {
  will-change: opacity;
}

@media (min-width: 801px) {
  .panel.signal-panel {
    top: 132px;
    left: 5%;
    transform: none;
  }
}

.signal-panel--journey {
  opacity: 0;
  pointer-events: none;
}

.is-merged-journey-source {
  display: none;
}


/* ── Section title blocks ── */
.section-title-block {
  position: relative;
  z-index: 2;
  scroll-margin-top: var(--header-h);
  /* 短區塊若只 snap 上緣，上下捲動時容易跟鄰近不滿一屏內容互搶；
     改由上下緣各設一個 snap 點（::before / ::after）。 */
  scroll-snap-align: none;
}

.section-title-block::before,
.section-title-block::after {
  content: '';
  display: block;
  height: 1px;
  overflow: hidden;
  pointer-events: none;
}

.section-title-block::before {
  scroll-snap-align: start;
  scroll-margin-top: var(--header-h);
}

.section-title-block::after {
  scroll-snap-align: end;
}

.section-title-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 56px 24px 40px;
  background:
    linear-gradient(to bottom, transparent, color-mix(in srgb, var(--cyan) 8%, transparent)),
    var(--bg);
  border-top: 1px solid color-mix(in srgb, var(--navy) 18%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--navy) 18%, transparent);
}

.section-title {
  margin: 0;
  max-width: 16em;
  font-size: clamp(18px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.35;
  text-align: center;
  color: var(--navy);
}

.section-title-stage .portals-lead {
  margin: 0;
  max-width: 40em;
  text-align: center;
  line-height: 1.65;
}

/* ── Scenes ── */
.scene {
  height: calc(var(--scene-vh, 100) * 1vh);
  position: relative;
  scroll-snap-align: start;
}

.scene-sticky {
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow: hidden;
  --p: 0;
}

.scene-art {
  position: absolute;
  inset: 0;
}

.scene-art svg {
  width: 100%;
  height: 100%;
}

/* ── Info panels ── */
.panel {
  position: absolute;
  left: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: min(420px, calc(100vw - 48px));
  padding: 24px 20px 24px 24px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--card) 95%, var(--cyan)), var(--card) 46%);
  border-radius: 16px;
  box-shadow: 0 18px 48px var(--shadow), 0 0 30px rgba(49, 177, 218, 0.035);
  border: 1px solid var(--card-border);
  opacity: 1;
  pointer-events: auto;
  user-select: text;
  z-index: 5;
}

.panel h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.32;
  margin-bottom: 4px;
}

.panel p {
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 8px;
}

.panel p:last-of-type {
  margin-bottom: 0;
}

.panel strong {
  color: var(--text-dark);
  font-weight: 700;
}

.panel-rule {
  width: 32px;
  height: 2px;
  background: var(--cyan);
  opacity: 0.7;
  border-radius: 1px;
  margin: 12px 0 14px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 8px;
  margin-top: 16px;
}

.stat {
  padding: 10px 8px;
  background: color-mix(in srgb, var(--cyan) 7%, transparent);
  border: 1px solid color-mix(in srgb, var(--cyan) 16%, transparent);
  border-radius: 10px;
  text-align: center;
}

.stat-n {
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.15;
}

.stat-l {
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 4px;
  letter-spacing: 0.4px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11px;
  letter-spacing: 0.4px;
  border: 1px solid color-mix(in srgb, var(--cyan) 32%, transparent);
  border-radius: 999px;
  color: var(--cyan);
  background: var(--nav-hover);
}

.scroll-hint {
  display: none;
}

/* ── Depth gauge ── */
.depth-gauge {
  position: absolute;
  right: 30px;
  top: 50%;
  transform: translateY(-50%);
  height: 62vh;
  width: 150px;
  pointer-events: none;
  z-index: 6;
  opacity: 1;
}

.dg-track {
  position: absolute;
  right: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  border-radius: 1px;
  background: linear-gradient(to bottom, color-mix(in srgb, var(--cyan) 20%, transparent), color-mix(in srgb, var(--cyan) 52%, transparent));
}

.dg-mark {
  position: absolute;
  right: 14px;
  transform: translateY(-50%);
  text-align: right;
  white-space: nowrap;
  color: var(--text-mid);
  font-size: 11px;
}

.dg-mark::after {
  content: '';
  position: absolute;
  right: -11px;
  top: 50%;
  width: 9px;
  height: 1px;
  background: color-mix(in srgb, var(--cyan) 48%, transparent);
  transform: translateY(-50%);
}

.dg-mark b {
  display: block;
  font-weight: 700;
  color: var(--navy);
  font-size: 12.5px;
}

.dg-mark small {
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.dg-mark em {
  display: block;
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: 1px;
  color: var(--cyan);
  margin-top: 1px;
}

.dg-mark.is-boundary.is-lit b,
.dg-mark.is-boundary.is-lit em {
  color: var(--warning);
}

.dg-cursor {
  position: absolute;
  right: 3px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 9px color-mix(in srgb, var(--cyan) 82%, transparent);
  transform: translate(50%, -50%);
  top: var(--cursor, 8%);
}

.depth-gauge.is-dark .dg-track {
  background: linear-gradient(to bottom, color-mix(in srgb, var(--cyan) 28%, transparent), color-mix(in srgb, var(--cyan) 70%, transparent));
}
.depth-gauge.is-dark .dg-mark,
.depth-gauge.is-dark .dg-mark small {
  color: color-mix(in srgb, var(--text-mid) 72%, transparent);
}
.depth-gauge.is-dark .dg-mark b {
  color: var(--text-dark);
}
.depth-gauge.is-dark .dg-mark em {
  color: var(--link);
}
.depth-gauge.is-dark .dg-mark::after {
  background: color-mix(in srgb, var(--cyan) 58%, transparent);
}

/* ── Articles / portals / footer ── */
.end-block {
  position: relative;
  z-index: 30;
}

.articles {
  background:
    radial-gradient(circle at 78% 8%, rgba(30, 143, 187, 0.1), transparent 34%),
    var(--bg);
  padding: 120px 6% 100px;
  box-shadow: none;
}

.articles-intro {
  max-width: 720px;
  margin: 0 0 56px;
}

.articles-headline {
  font-size: 32px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.35;
  margin-bottom: 14px;
}

.articles-lead,
.portals-lead {
  font-size: 15px;
  color: var(--text-mid);
}

.articles-grid,
.portals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}

.article-card,
.portal-card {
  display: block;
  padding: 28px 28px 24px;
  background: linear-gradient(150deg, color-mix(in srgb, var(--card) 96%, var(--cyan)), var(--card) 58%);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  color: inherit;
  text-decoration: none;
  box-shadow: 0 8px 24px var(--shadow);
  transition: transform 0.2s ease;
}

.article-card {
  border-top: 3px solid color-mix(in srgb, var(--cyan) 68%, transparent);
}

.article-card:hover {
  background: var(--card-hover);
  border-color: var(--cyan);
}

.portal-card:hover {
  background: var(--card-hover);
  transform: translateY(-4px);
}

.portal-card-image {
  aspect-ratio: 1.756;
  overflow: hidden;
  border-radius: 10px;
  margin-bottom: 18px;
}

.portal-card-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.portals-grid-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.portal-card--social .portal-card-desc {
  margin-bottom: 12px;
}

.portal-card-social {
  font-size: 14px;
  color: var(--text-mid);
}

.portal-card-social a {
  display: inline-flex;
  align-items: center;
  color: var(--cyan);
  text-decoration: none;
}

.portal-card-social a i {
  margin-right: 0.3em;
}

.portal-card-social a:hover {
  text-decoration: underline;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.card-num {
  font-size: 11px;
  letter-spacing: 5px;
  color: var(--cyan);
  font-weight: 700;
}

.draft-tag {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-dim);
  padding: 3px 9px;
  border: 1px solid var(--card-border);
  border-radius: 20px;
}

.article-card h3,
.portal-card h3 {
  font-size: 20px;
  font-weight: 400;
  color: var(--navy);
  line-height: 1.4;
  margin-bottom: 8px;
}

.article-card-sub {
  font-size: 12.5px;
  color: var(--cyan);
  opacity: 0.75;
  margin-bottom: 22px;
}

.portal-card-desc {
  font-size: 13.5px;
  color: var(--text-mid);
}

.card-arrow {
  font-size: 18px;
  color: var(--cyan);
  display: inline-block;
}

.closing-screen {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  scroll-snap-align: none;
  scroll-margin-top: var(--header-h);
}

.closing-screen::before,
.closing-screen::after {
  content: '';
  display: block;
  flex: 0 0 auto;
  height: 1px;
  overflow: hidden;
  pointer-events: none;
}

.closing-screen::before {
  scroll-snap-align: start;
  scroll-margin-top: var(--header-h);
}

.closing-screen::after {
  scroll-snap-align: end;
}

.portals {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(circle at 18% 0%, rgba(40, 164, 203, 0.09), transparent 32%),
    var(--bg-alt);
  padding: 0 6% 80px;
  box-shadow: none;
}

.portals-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.site-footer {
  background: var(--bg-footer);
  padding: 22px 6%;
  color: var(--text-mid);
  box-shadow: none;
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
}

.footer-org {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-weight: 700;
  color: var(--navy);
  font-size: 15px;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.footer-org-logo {
  display: inline-flex;
  flex-shrink: 0;
  line-height: 0;
}

.footer-org-logo img {
  display: block;
  height: 32px;
  width: auto;
}

.footer-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 20px;
}

.footer-github {
  color: var(--cyan);
  text-decoration: none;
  font-size: 13.5px;
}

.footer-github:hover,
.footer-org:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-copy {
  margin: 0;
  font-size: 12.5px;
  color: var(--text-dim);
}

html.is-modal-open,
html.is-modal-open body {
  overflow: hidden;
}

/* ── Article modal ── */
.article-dialog {
  width: min(720px, calc(100vw - 32px));
  height: min(92dvh, 960px);
  max-height: min(92dvh, 960px);
  margin: auto;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--cyan) 24%, var(--divider));
  border-radius: 18px;
  background: var(--article-dialog-bg);
  color: var(--text-dark);
  box-shadow:
    0 0 0 1px rgba(222, 246, 255, 0.04) inset,
    0 0 34px rgba(94, 221, 245, 0.08),
    0 28px 80px var(--shadow);
  overflow: hidden;
  flex-direction: column;
}

dialog.article-dialog {
  display: none;
}

dialog.article-dialog[open] {
  display: flex;
}

dialog.article-dialog::backdrop {
  background: rgba(1, 8, 25, 0.72);
  backdrop-filter: blur(8px);
}

.article-dialog--page {
  display: flex;
  position: relative;
  z-index: 1;
  width: min(720px, calc(100vw - 32px));
  height: min(92dvh, 960px);
  max-height: min(92dvh, 960px);
}

.article-dialog-bar {
  flex-shrink: 0;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 10px 12px 0;
  background: var(--article-dialog-bg);
}

.article-dialog-close {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--navy);
  background: var(--bg-soft);
  text-decoration: none;
}

.article-dialog-close:hover,
.article-dialog-close:focus-visible {
  color: var(--cyan);
  background: var(--card-hover);
}

.article-dialog-close svg {
  width: 22px;
  height: 22px;
}

.article-dialog-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  overflow-anchor: none;
  overscroll-behavior: contain;
}

.article-wrap--modal {
  max-width: none;
  padding: 4px 32px 64px;
}

.article-standalone .site-nav {
  display: none;
}

.article-modal-page {
  position: relative;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 16px;
}

.article-modal-page-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(1, 8, 25, 0.72);
  backdrop-filter: blur(8px);
}

html:has(.article-modal-page),
html:has(.article-modal-page) body {
  background: var(--bg-cover);
}

.flourish-embed iframe {
  width: 100%;
  border: 0;
  display: block;
  border-radius: 8px;
  background: var(--bg-soft);
}

.flourish-chart iframe {
  height: min(560px, 70vh);
}

.flourish-table iframe {
  height: min(720px, 78vh);
}

@media (prefers-reduced-motion: no-preference) {
  dialog.article-dialog[open] {
    animation: article-dialog-in 0.22s ease-out;
  }

  dialog.article-dialog::backdrop {
    animation: article-backdrop-in 0.22s ease-out;
  }
}

@keyframes article-dialog-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes article-backdrop-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (max-width: 720px) {
  .article-dialog,
  .article-dialog--page {
    width: 100vw;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
  }

  .article-wrap,
  .article-wrap--modal {
    padding: 4px 20px 48px;
  }

  .article-modal-page {
    padding: 0;
  }
}

.article-wrap {
  max-width: none;
  margin: 0;
  padding: 4px 36px 64px;
}

.article-wrap.article-wrap--modal {
  padding-right: 32px;
  padding-left: 32px;
}

.article-wrap h1 {
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-desc {
  font-size: 17px;
  color: var(--text-mid);
  margin-bottom: 12px;
}

.article-meta {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 28px;
}

.article-toc {
  margin: 0 0 36px;
  padding: 18px 20px 16px;
  border: 1px solid var(--card-border);
  border-radius: 12px;
}

.article-toc-title {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--navy);
}

.article-toc-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.article-toc-list a {
  color: var(--text-mid);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.45;
}

.article-toc-list a:hover,
.article-toc-list a:focus-visible {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose {
  font-size: 17px;
  line-height: 1.9;
  color: var(--prose);
  overflow-x: auto;
}

.prose h2 {
  font-size: 22px;
  margin: 2em 0 0.6em;
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.prose h3 {
  font-size: 18px;
  margin: 1.6em 0 0.5em;
}

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

.prose ul,
.prose ol {
  padding-left: 1.3em;
}

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

.prose blockquote {
  border-left: 3px solid color-mix(in srgb, var(--cyan) 62%, transparent);
  padding: 4px 0 4px 16px;
  color: var(--text-mid);
  margin: 1.6em 0;
}

.article-page {
  background: var(--article-bg);
  min-height: 100dvh;
}

.back-home {
  display: inline-block;
  margin-bottom: 28px;
  font-size: 13px;
  color: var(--link);
  text-decoration: none;
}

.article-list {
  max-width: 800px;
  margin: 0 auto;
  padding: 120px 24px 96px;
}

.article-list h1 {
  font-size: 32px;
  margin-bottom: 32px;
}

.prose img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  margin: 1.4em 0;
  background: var(--bg-soft);
}

.prose table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.55;
  margin: 1.2em 0 1.6em;
}

.prose th,
.prose td {
  border: 1px solid var(--card-border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--bg-soft);
  font-weight: 700;
}

.prose .flourish-embed {
  margin: 1.4em 0 1.8em;
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--divider);
  margin: 2em 0;
}

@media (max-width: 640px) {
  .site-nav {
    padding: 0 14px 0 18px;
    gap: 10px;
    cursor: pointer;
  }

  .site-nav-brand {
    font-size: 0;
  }

  .site-nav-current {
    display: block;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    max-width: min(52vw, calc(100% - 120px));
    text-align: center;
    pointer-events: none;
  }

  .site-nav-toggle {
    display: flex;
    order: 2;
    margin-left: auto;
    flex-shrink: 0;
  }

  .site-nav-links {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 8px 12px 14px;
    background: color-mix(in srgb, var(--nav-bg) 96%, transparent);
    border-bottom: 1px solid var(--nav-border);
    box-shadow: 0 12px 24px var(--shadow);
  }

  .site-nav.is-open .site-nav-links {
    display: flex;
  }

  .site-nav-links a {
    padding: 12px 10px;
    font-size: 15px;
  }
}

@media (min-width: 641px) {
  .site-nav-links {
    order: 2;
    margin-left: auto;
  }
}

@media (max-width: 800px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .panel {
    left: 4%;
    right: 4%;
    width: auto;
    max-width: none;
    top: auto;
    bottom: 18px;
    transform: none;
    padding: 24px 20px 24px 24px;
  }

  .panel h2 {
    font-size: 18px;
  }

  .panel p {
    font-size: 13px;
  }

  .cover {
    padding-bottom: 72px;
  }

  .cover-title {
    font-size: 26px;
  }

  .cover-rule {
    gap: 16px;
    margin: 22px auto 24px;
    font-size: 20px;
    letter-spacing: 0.03em;
  }

  .cover-lead {
    gap: 10px;
    font-size: 13px;
    line-height: 1.65;
  }
}

.signal-flow {
  animation: signal-flow 0.85s linear infinite;
}

@keyframes signal-flow {
  to {
    stroke-dashoffset: -18;
  }
}

.radio-wave path {
  animation: radio-breathe 2.8s ease-in-out infinite;
}

.radio-wave path:nth-child(2),
.radio-wave path:nth-child(5) {
  animation-delay: 0.28s;
}

.radio-wave path:nth-child(3),
.radio-wave path:nth-child(6) {
  animation-delay: 0.56s;
}

@keyframes radio-breathe {
  0%,
  100% {
    opacity: 0.2;
  }
  50% {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-snap-type: none;
  }

  .scroll-hint,
  .article-card,
  .portal-card,
  .site-nav,
  .signal-flow,
  .radio-wave path,
  .land-pin-dot,
  .land-pin-dot::after {
    animation: none;
    transition: none;
  }

  .land-pin-dot::after {
    content: none;
  }
}

/* ── Scene stages (from Astro component styles) ── */
.intro-stage,
.journey-intro-stage,
.journey-stage,
.sea-intro-stage,
.sea-stage,
.land-stage,
.tw-stage,
.network-stage {
  position: absolute;
  inset: 0;
}

.intro-stage,
.journey-intro-stage,
.journey-stage,
.sea-intro-stage,
.sea-stage {
  background: var(--bg);
}

.journey-intro-stage,
.journey-stage,
.sea-intro-stage,
.sea-stage {
  background: var(--bg-stage);
  overflow: hidden;
}

.journey-intro-stage {
  background:
    radial-gradient(circle at 72% 44%, rgba(22, 116, 160, 0.16), transparent 34%),
    var(--illus-sky-2);
}

.journey-intro-panel {
  max-width: 430px;
}

.journey-stage {
  --journey-enter-opacity: 1;
  --journey-enter-shift: 0px;
  --journey-enter-scale: 1;
}

.journey-svg {
  opacity: var(--journey-enter-opacity);
  transform: translateY(var(--journey-enter-shift)) scale(var(--journey-enter-scale));
  transform-origin: center 58%;
  will-change: opacity, transform;
}

.journey-stage::after {
  content: '';
  position: absolute;
  z-index: 1;
  right: 0;
  bottom: 0;
  left: 0;
  height: 18%;
  background: linear-gradient(180deg, transparent, var(--illus-sea-2));
  pointer-events: none;
}

.sea-intro-panel {
  max-width: 430px;
}

@media (min-width: 801px) {
  .sea-intro-panel {
    top: 132px;
    transform: none;
  }
}

.sea-hazard-stage {
  padding-top: var(--header-h);
  background:
    linear-gradient(180deg, var(--illus-sky-2) 0 44.2%, var(--illus-sea-2) 44.2% 100%);
}

.sea-hazard-story {
  scroll-snap-align: none;
}

.sea-hazard-viewport {
  position: absolute;
  z-index: 2;
  inset: 0;
  overflow: hidden;
}

.sea-hazard-grid {
  display: flex;
  width: 264%;
  height: 100%;
  will-change: transform;
}

.sea-hazard-slide {
  position: relative;
  display: flex;
  flex: 0 0 calc(100% / 3);
  min-width: 0;
  height: 100%;
  justify-content: center;
}

.sea-hazard-margin {
  position: absolute;
  top: 0;
  z-index: 0;
  width: max(0px, calc((100% - 600px) / 2));
  height: 100%;
  max-width: none;
}

.sea-hazard-margin--left {
  left: 0;
  width: max(2px, calc((100% - 600px) / 2 + min(250px, 19vw) + 2px));
}

.sea-hazard-margin--right {
  right: 0;
  width: max(4px, calc((100% - 600px) / 2 - min(250px, 19vw) + 4px));
}

/* The shortened desktop slide spacing leaves 12vw beyond the final slide.
   Extend the last seabed strip into that space so the scene never exposes
   the water background at the end of the horizontal journey. */
.sea-hazard-slide:last-child .sea-hazard-margin--right {
  right: -12vw;
  width: max(calc(12vw + 4px), calc((100% - 600px) / 2 - min(250px, 19vw) + 12vw + 4px));
}

.sea-hazard-frame {
  position: relative;
  z-index: 1;
  display: flex;
  height: 100%;
  width: 600px;
  max-width: 100%;
  transform: translateX(min(250px, 19vw));
}

.sea-hazard-transition {
  position: relative;
  flex: 0 0 60px;
  width: 60px;
  height: 100%;
  max-width: none;
  margin-inline: -1px;
}

.sea-hazard {
  position: relative;
  flex: 0 0 auto;
  width: min(480px, 100%);
  height: 100%;
  min-width: 0;
  overflow: hidden;
}

.sea-hazard h2 {
  position: absolute;
  z-index: 5;
  top: clamp(100px, 14.8vh, 124px);
  left: 50%;
  width: max-content;
  max-width: calc(100% - 24px);
  transform: translateX(-50%);
  color: var(--text-dark);
  font-size: 20px;
  line-height: 1.3;
  white-space: nowrap;
}

.sea-hazard > p {
  position: absolute;
  z-index: 5;
  top: clamp(136px, 19.8vh, 166px);
  left: 50%;
  bottom: auto;
  width: max-content;
  max-width: none;
  transform: translateX(-50%);
  color: var(--text-mid);
  font-size: 16px;
  text-align: center;
  white-space: nowrap;
}

.sea-hazard-environment {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -2px;
  z-index: 1;
  width: calc(100% + 4px);
  height: 100%;
  max-width: none;
}

.sea-water-fill {
  fill: transparent;
}

.sea-bed-line {
  fill: none;
  stroke: var(--illus-line);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.sea-bed-fill {
  fill: var(--illus-bed-2);
}

.sea-bed-line {
  opacity: 0.76;
}

.sea-tool-line {
  fill: none;
  stroke: var(--illus-line);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-dasharray: 7 8;
  vector-effect: non-scaling-stroke;
  opacity: 0.82;
}

.sea-dredge-pipe-shell,
.sea-dredge-pipe-core {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.sea-dredge-pipe-shell {
  stroke: var(--illus-line);
  stroke-width: 14;
}

.sea-dredge-pipe-core {
  stroke: color-mix(in srgb, var(--cyan) 48%, var(--illus-sea-2));
  stroke-width: 8;
}

.sea-dredge-intake {
  fill: color-mix(in srgb, var(--cyan) 18%, var(--bg-stage));
  stroke: var(--illus-line);
  stroke-width: 3;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.sea-dredge-intake-mouth {
  fill: none;
  stroke: var(--illus-line);
  stroke-width: 5;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}

.sea-cable-glow,
.sea-cable-line,
.sea-cable-signal {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.sea-cable-glow,
.sea-cable-line {
  stroke: var(--warning);
}

.sea-cable-glow {
  stroke-width: 11;
  opacity: 0.2;
}

.sea-cable-line {
  stroke-width: 5;
}

.sea-cable-signal {
  stroke: var(--cyan);
  stroke-width: 2.2;
  stroke-dasharray: 10 8;
}

.sea-excavation-edge {
  fill: none;
  stroke: color-mix(in srgb, var(--warning) 58%, var(--illus-line));
  stroke-width: 3;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.sea-sand-flow {
  fill: var(--warning);
  opacity: 0.9;
}

.sea-vessel,
.sea-tool {
  position: absolute;
  z-index: 3;
  height: auto;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
}

.sea-vessel--fishing {
  top: 33.7%;
  left: 50%;
  width: min(48%, 220px);
  transform: translateX(-50%);
}

.sea-vessel--ship,
.sea-ship-stern-fix {
  top: 33.9%;
  left: 50%;
  width: min(70%, 330px);
  transform: translateX(-50%);
}

.sea-ship-stern-fix {
  position: absolute;
  z-index: 4;
  height: auto;
  overflow: visible;
  pointer-events: none;
}

.sea-ship-stern-fix path {
  fill: none;
  stroke: #e8faff;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.sea-vessel--dredger {
  top: 35%;
  left: 49%;
  width: min(72%, 340px);
  clip-path: inset(0 0 0 1%);
  transform: translateX(-50%);
}

.sea-tool--trawl {
  top: auto;
  bottom: 12.8%;
  left: 50%;
  width: min(66%, 310px);
  transform: translateX(-50%);
  animation: sea-trawl-drag 4.2s ease-in-out infinite;
}

.sea-hazard--trawl .sea-tool-line {
  animation: sea-trawl-link-drag 4.2s ease-in-out infinite;
}

.sea-hazard--anchor {
  --sea-anchor-motion-duration: 3s;
  --sea-anchor-motion-easing: cubic-bezier(0.42, 0, 0.58, 1);
}

.sea-hazard--anchor .sea-tool-line {
  animation: sea-anchor-link-lift var(--sea-anchor-motion-duration) var(--sea-anchor-motion-easing) infinite;
}

.sea-hazard--anchor .sea-cable-glow,
.sea-hazard--anchor .sea-cable-line,
.sea-hazard--anchor .sea-cable-signal {
  animation: sea-anchor-cable-lift var(--sea-anchor-motion-duration) var(--sea-anchor-motion-easing) infinite;
}

.sea-tool--anchor {
  top: 58.9%;
  left: 54%;
  width: min(23%, 108px);
  transform: translateX(-50%);
  animation: sea-anchor-lift var(--sea-anchor-motion-duration) var(--sea-anchor-motion-easing) infinite;
}

@keyframes sea-trawl-drag {
  0%,
  100% {
    transform: translateX(-56%);
  }
  50% {
    transform: translateX(-38%);
  }
}

@keyframes sea-trawl-link-drag {
  0%,
  100% {
    d: path("M192 342 C202 432 224 552 250 628");
  }
  50% {
    d: path("M192 342 C208 432 248 552 307 628");
  }
}

@keyframes sea-trawl-link-drag-mobile {
  0%,
  100% {
    d: path("M192 342 C202 432 224 552 250 628");
  }
  50% {
    d: path("M192 342 C210 432 254 552 322 628");
  }
}

@keyframes sea-anchor-lift {
  0%,
  100% {
    transform: translate(-50%, 0);
  }
  50% {
    transform: translate(-50%, -18px);
  }
}

@keyframes sea-anchor-link-lift {
  0%,
  100% {
    d: path("M318 340 C304 394 286 486 252 552");
  }
  50% {
    d: path("M318 340 C304 382 286 468 252 534");
  }
}

@keyframes sea-anchor-cable-lift {
  0%,
  100% {
    d: path("M0 580 C112 580 174 588 216 548 C232 530 238 490 250 472 C256 464 264 464 270 472 C282 490 278 530 292 554 C326 594 410 580 480 580");
  }
  50% {
    d: path("M0 580 C112 580 174 588 216 536 C232 512 238 472 250 454 C256 446 264 446 270 454 C282 472 278 512 292 542 C326 592 410 580 480 580");
  }
}

@keyframes sea-anchor-cable-lift-mobile {
  0%,
  100% {
    d: path("M0 580 C112 580 174 588 216 520 C232 480 238 440 250 424 C256 416 264 416 270 424 C282 440 278 480 292 526 C326 594 410 580 480 580");
  }
  50% {
    d: path("M0 580 C112 580 174 588 216 508 C232 462 238 422 250 406 C256 398 264 398 270 406 C282 422 278 462 292 514 C326 592 410 580 480 580");
  }
}

.land-stage {
  background: var(--bg-stage);
}

.tw-stage {
  background: var(--bg-stage);
}

.article-stage {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 76% 42%, rgba(31, 145, 187, 0.1), transparent 38%),
    var(--bg);
}

.article-scene {
  scroll-snap-align: none;
}

.article-scene#article-01,
.article-scene#article-03 {
  scroll-snap-align: start;
  scroll-margin-top: var(--header-h);
}

.article-visual {
  position: absolute;
  inset: 0;
}

.article-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
}

.article-visual--photo {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 10vh max(6%, 130px) 10vh 44%;
  background: radial-gradient(ellipse at 70% 45%, var(--bg-soft) 0%, var(--bg) 68%);
}

.article-visual--chart {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 10vh max(4%, 130px) 10vh 44%;
}

.article-visual--chart iframe {
  width: 100%;
  height: min(72vh, 640px);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  background: var(--card);
  box-shadow: 0 18px 48px var(--shadow);
}

.article-visual--photo img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 78vh;
  object-fit: contain;
  object-position: center;
  border-radius: 14px;
  box-shadow: 0 18px 48px var(--shadow);
  background: var(--card);
}

.article-visual--grid {
  display: grid;
  gap: 6px;
  padding: 6px;
}

.article-visual--grid[data-count='5'] {
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: 1fr 1fr;
}

.article-visual--grid[data-count='5'] img:nth-child(1) { grid-column: 1 / 3; }
.article-visual--grid[data-count='5'] img:nth-child(2) { grid-column: 3 / 5; }
.article-visual--grid[data-count='5'] img:nth-child(3) { grid-column: 5 / 7; }
.article-visual--grid[data-count='5'] img:nth-child(4) { grid-column: 2 / 4; }
.article-visual--grid[data-count='5'] img:nth-child(5) { grid-column: 4 / 6; }

.article-visual--quote {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 12vh max(8%, 130px) 12vh 46%;
}

.article-quote {
  margin: 0;
  max-width: 22em;
  font-size: clamp(22px, 3.1vw, 40px);
  font-weight: 700;
  color: var(--navy);
  pointer-events: auto;
  user-select: text;
  cursor: text;
}

.article-quote::before,
.article-quote::after {
  color: var(--cyan);
}

.article-quote::before {
  content: '「';
}

.article-quote::after {
  content: '」';
}

.article-visual-veil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: linear-gradient(90deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 48%, transparent) 28%, transparent 50%);
}

.article-panel {
  z-index: 6;
  pointer-events: auto;
  user-select: text;
}

.article-panel--stack {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.article-panel--stack .article-teaser + .article-teaser {
  padding-top: 28px;
  border-top: 1px solid color-mix(in srgb, var(--card-border) 85%, transparent);
}

.article-panel h2 {
  font-size: clamp(20px, 2.4vw, 26px);
}

.article-read {
  display: inline-flex;
  margin-top: 16px;
  pointer-events: auto;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.article-read:hover,
.article-read:focus-visible {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.landing-map {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.taiwan-map-tools {
  position: absolute;
  right: 16px;
  bottom: 24px;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  pointer-events: auto;
}

#taiwan-map .maplibregl-marker:has(.dest-pin.is-draggable) {
  pointer-events: auto;
}

#taiwan-map .dest-pin.is-draggable {
  pointer-events: auto;
  cursor: grab;
}

#taiwan-map .dest-pin.is-draggable:active,
#taiwan-map .dest-pin.is-dragging {
  cursor: grabbing;
}

#taiwan-map .dest-pin.is-draggable::before {
  content: '';
  position: absolute;
  inset: -16px;
  border-radius: 50%;
}

.taiwan-view-hint {
  margin: 0;
  max-width: 280px;
  padding: 6px 10px;
  background: color-mix(in srgb, var(--tool-bg) 92%, transparent);
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  font-size: 11px;
  letter-spacing: 0;
  color: var(--text-mid);
  text-align: right;
}

.taiwan-view-hint[data-state='saved'] {
  color: #4ade80;
}

.taiwan-view-hint[data-state='error'] {
  color: #f87171;
}

.landing-routes-svg {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.landing-map .maplibregl-marker {
  z-index: 2;
}

.landing-map .maplibregl-map,
.landing-map .maplibregl-canvas,
.landing-map .maplibregl-canvas-container {
  width: 100%;
  height: 100%;
}

.landing-map-veil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(3, 22, 52, 0.16), rgba(2, 13, 35, 0.4));
  z-index: 1;
}

.network-story {
  --landing-pin-opacity: 1;
  --domestic-pin-opacity: 0;
  --overseas-pin-opacity: 0;
  height: 300dvh;
  scroll-snap-align: none;
}

.network-story-anchor {
  position: absolute;
  top: 48%;
  left: 0;
  width: 1px;
  height: 1px;
  scroll-margin-top: var(--header-h);
  pointer-events: none;
}

.network-stage {
  background:
    radial-gradient(circle at 68% 44%, rgba(33, 142, 184, 0.12), transparent 40%),
    var(--bg-stage);
}

.network-stage::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(180deg, rgba(1, 11, 29, 0.08), transparent 34%, rgba(1, 10, 26, 0.1));
  pointer-events: none;
}

.network-panel {
  --network-shift: 0px;
  transform: translateY(calc(-50% + var(--network-shift)));
  will-change: opacity, transform;
}

.network-panel--global {
  top: auto;
  right: 5%;
  bottom: clamp(28px, 6vh, 64px);
  left: auto;
  transform: translateY(var(--network-shift));
  opacity: 0;
  pointer-events: none;
}

.network-stage .landing-routes-svg,
.network-stage .maplibregl-marker {
  will-change: opacity;
}

.network-stage .network-landing-pin .land-pin-dot,
.network-stage .network-landing-pin .land-pin-label {
  opacity: var(--landing-pin-opacity);
}

.network-stage .network-destination-pin--domestic .land-pin-dot,
.network-stage .network-destination-pin--domestic .land-pin-label {
  opacity: var(--domestic-pin-opacity);
}

.network-stage .network-destination-pin--overseas .land-pin-dot,
.network-stage .network-destination-pin--overseas .land-pin-label {
  opacity: var(--overseas-pin-opacity);
}

.network-destination-pin--domestic {
  --pin-color: var(--route-domestic);
}

.network-destination-pin--overseas {
  --pin-color: var(--route-overseas);
}

.network-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 16px;
  color: var(--text-mid);
  font-size: 12px;
  font-weight: 700;
}

.network-legend span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.network-legend-line {
  display: inline-block;
  width: 24px;
  height: 3px;
  border-radius: 999px;
  box-shadow: 0 0 9px currentColor;
}

.network-legend-line--domestic {
  color: var(--route-domestic);
  background: currentColor;
}

.network-legend-line--overseas {
  color: var(--route-overseas);
  background: currentColor;
}

.land-pin {
  --pin-color: var(--warning);
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
  overflow: visible;
}

.land-pin-dot {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--card);
  border: 3px solid var(--pin-color);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--pin-color) 22%, transparent);
  box-sizing: border-box;
  animation: land-pin-glow 3.2s ease-in-out infinite;
}

.land-pin-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--pin-color);
  animation: land-pin-ring 3.2s ease-in-out infinite;
}

@keyframes land-pin-glow {
  0%,
  100% {
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--pin-color) 12%, transparent);
  }
  50% {
    box-shadow: 0 0 0 10px color-mix(in srgb, var(--pin-color) 42%, transparent);
  }
}

@keyframes land-pin-ring {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.55;
  }
  50% {
    transform: scale(2.2);
    opacity: 0;
  }
}

.land-pin-label {
  position: absolute;
  top: 50%;
  left: 22px;
  transform: translateY(-50%);
  padding: 3px 8px 2px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-dark);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  white-space: nowrap;
  box-shadow: 0 2px 8px var(--shadow);
}

.land-pin--left .land-pin-label {
  left: auto;
  right: 22px;
}

.intro-svg,
.land-stage svg,
.tw-stage svg {
  width: 100%;
  height: 100%;
}

.journey-svg,
.sea-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
}

.journey-svg .signal-flow {
  animation-duration: 1.15s;
}

/* ── Small-breakpoint fixes ──
   These must stay last in the file: the unconditional rules above
   (added later, in the "Scene stages" section) share the same
   specificity as the max-width:800px block earlier in this file and
   would otherwise win the cascade by source order alone. */
@media (max-width: 800px) {
  .portals-grid {
    grid-template-columns: 1fr;
  }

  .portals-grid-row {
    grid-template-columns: 1fr;
  }

  .scene.article-scene {
    --scene-vh: 100 !important;
    scroll-snap-align: start;
    scroll-margin-top: var(--header-h);
  }

  .panel.signal-panel {
    top: auto;
    right: 4%;
    bottom: 18px;
    left: 4%;
    width: auto;
  }

  .signal-journey-foreground,
  .signal-journey-landscape {
    right: auto;
    left: calc(50% - var(--signal-canvas-width, 900px) / 2);
    width: var(--signal-canvas-width, 900px);
  }

  .network-story {
    height: 280dvh;
  }

  .network-panel {
    transform: translateY(var(--network-shift));
  }

  .network-panel--global {
    top: auto;
    right: 16px;
    bottom: 16px;
    left: 16px;
    width: auto;
  }

  .network-destination-pin[data-site-id='kinmen'] .land-pin-label {
    left: 22px;
    right: auto;
  }

  .network-destination-pin[data-site-id='matsu'] .land-pin-label {
    top: calc(50% + 24px);
  }

  .network-destination-pin[data-site-id='losangeles'] .land-pin-label {
    top: calc(50% + 20px);
    left: auto;
    right: 22px;
  }

  .sea-intro-panel {
    bottom: 24px;
  }

  .sea-hazard-viewport {
    inset: 0;
  }

  .sea-hazard-slide {
    align-items: stretch;
  }

  .sea-hazard-grid {
    width: 300%;
  }

  .sea-hazard-frame {
    width: 100%;
    transform: none;
  }

  .sea-hazard {
    width: 100%;
  }

  .sea-hazard-margin,
  .sea-hazard-transition {
    display: none;
  }

  .sea-hazard h2 {
    top: 80px;
    width: calc(100% - 12px);
    font-size: 20px;
    text-align: center;
    white-space: normal;
  }

  .sea-hazard > p {
    top: 116px;
    bottom: auto;
    width: 88%;
    max-width: 88%;
    font-size: 10px;
    white-space: normal;
  }

  .sea-hazard-stage {
    background:
      linear-gradient(180deg, var(--illus-sky-2) 0 30%, var(--illus-sea-2) 30% 100%);
  }

  .sea-vessel--fishing {
    top: 19%;
    width: 150px;
  }

  .sea-vessel--ship,
  .sea-ship-stern-fix {
    top: 20%;
    width: 210px;
  }

  .sea-vessel--dredger {
    top: 20%;
    width: 220px;
  }

  .sea-hazard-environment {
    transform-origin: 0 0;
    transform: translateY(-6.6px) scaleY(0.664);
  }

  .sea-tool--trawl {
    top: 50%;
    bottom: auto;
    width: 140px;
  }

  .sea-hazard--trawl .sea-tool-line {
    animation-name: sea-trawl-link-drag-mobile;
  }

  .sea-tool--anchor {
    top: 38%;
    left: 54%;
    width: 65px;
  }

  .sea-hazard--anchor .sea-cable-glow,
  .sea-hazard--anchor .sea-cable-line,
  .sea-hazard--anchor .sea-cable-signal {
    animation-name: sea-anchor-cable-lift-mobile;
  }

  .article-visual--photo,
  .article-visual--quote,
  .article-visual--chart {
    padding: 72px 20px 46%;
    justify-content: center;
  }

  .article-visual-veil {
    background: linear-gradient(180deg, transparent 35%, var(--bg) 92%);
  }

  .article-quote {
    font-size: 22px;
    text-align: center;
  }

  .article-visual--grid[data-count='5'] {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: 1fr 1fr;
    padding: 0 0 38%;
  }

  .article-visual--grid[data-count='5'] img:nth-child(1),
  .article-visual--grid[data-count='5'] img:nth-child(2),
  .article-visual--grid[data-count='5'] img:nth-child(3),
  .article-visual--grid[data-count='5'] img:nth-child(4),
  .article-visual--grid[data-count='5'] img:nth-child(5) {
    grid-column: auto;
  }
}

@media (max-height: 520px) {
  .sea-hazard h2 {
    top: 8px;
    font-size: 18px;
  }

  .sea-hazard > p {
    top: 36px;
    font-size: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .network-story {
    height: 200dvh;
  }

  .network-panel,
  .network-stage .landing-routes-svg,
  .network-stage .maplibregl-marker {
    transition: none;
  }

  .sea-tool--trawl,
  .sea-hazard--trawl .sea-tool-line,
  .sea-tool--anchor,
  .sea-sand-flow,
  .sea-hazard--anchor .sea-tool-line,
  .sea-hazard--anchor .sea-cable-glow,
  .sea-hazard--anchor .sea-cable-line,
  .sea-hazard--anchor .sea-cable-signal {
    animation: none;
  }
}