:root {
	--cold-white: #f2f5f4;
	--paper: #e7ebeb;
	--fog: #c9d0d2;
	--mist: #99a6ac;
	--sea: #0a3448;
	--deep-sea: #061f2b;
	--ink: #102832;
	--orange: #f16a32;
	--orange-dark: #b83f18;
	--white: #ffffff;
	--line: rgba(16, 40, 50, 0.18);
	--dark-line: rgba(255, 255, 255, 0.18);
	--container: 1480px;
	--page-gutter: clamp(24px, 4vw, 72px);
	--section-space: clamp(88px, 10vw, 156px);
	--small-radius: 6px;
	--font: "Noto Sans TC", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body { margin: 0; overflow-x: hidden; background: var(--cold-white); color: var(--ink); font-family: var(--font); font-size: 17px; line-height: 1.8; }
body.is-menu-open { overflow: hidden; }

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

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

button { color: inherit; font: inherit; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }

.skip-link { position: fixed; top: 12px; left: 12px; z-index: 1000; padding: 10px 16px; background: var(--white); color: var(--deep-sea); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

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

.section-shell { width: min(var(--container), calc(100% - (var(--page-gutter) * 2))); margin: 0 auto; }

.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 22px; color: var(--orange-dark); font-size: 14px; font-weight: 700; letter-spacing: 0.13em; }
.eyebrow::before { width: 36px; height: 2px; background: currentColor; content: ""; }

.section-heading { margin: 0; font-size: clamp(30px, 3.4vw, 48px); line-height: 1.28; letter-spacing: -0.025em; }
.section-lead { max-width: 660px; margin: 24px 0 0; color: #40565f; font-size: 18px; line-height: 1.9; }

.text-link { display: inline-flex; align-items: center; gap: 14px; padding: 10px 0 8px; border-bottom: 2px solid currentColor; font-size: 15px; font-weight: 700; letter-spacing: 0.04em; }
.text-link::after { content: "→"; font-size: 18px; transition: transform 0.25s ease; }
.text-link:hover::after { transform: translateX(5px); }
.primary-link { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 12px 22px; border: 1px solid var(--orange); background: var(--orange); color: var(--deep-sea); font-size: 15px; font-weight: 800; }
.secondary-link { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 12px 22px; border: 1px solid currentColor; font-size: 15px; font-weight: 700; }

.motion-block { opacity: 0; transform: translateX(28px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.65, 0.3, 1); }
.motion-block.is-visible { opacity: 1; transform: translateX(0); }

/* header */
header { position: relative; min-height: 100vh; padding-top: 84px; background: var(--cold-white); }
header .header-nav { position: fixed; top: 0; left: 0; z-index: 100; width: 100%; height: 84px; border-bottom: 1px solid var(--line); background: rgba(242, 245, 244, 0.94); transition: height 0.25s ease, background 0.25s ease, box-shadow 0.25s ease; }
header .header-nav.is-scrolled { height: 68px; background: rgba(242, 245, 244, 0.98); box-shadow: 0 12px 28px rgba(6, 31, 43, 0.08); }
header .header-nav-shell { display: grid; grid-template-columns: minmax(250px, 1fr) auto auto; align-items: center; gap: 36px; width: min(var(--container), calc(100% - (var(--page-gutter) * 2))); height: 100%; margin: 0 auto; }
header .header-brand { display: flex; align-items: center; gap: 15px; min-width: 0; }
header .header-brand-mark { display: grid; place-items: center; width: 39px; aspect-ratio: 1; }
header .header-brand-copy { display: flex; flex-direction: column; min-width: 0; line-height: 1.25; }
header .header-brand-copy strong { overflow: hidden; font-size: 16px; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
header .header-brand-copy span { margin-top: 3px; color: #5f7178; font-size: 11px; font-weight: 600; letter-spacing: 0.09em; }
header .header-nav-list { display: flex; align-items: center; gap: 30px; margin: 0; padding: 0; list-style: none; }
header .header-nav-list a { position: relative; display: block; padding: 10px 0; font-size: 14px; font-weight: 700; }
header .header-nav-list a::after { position: absolute; right: 0; bottom: 4px; left: 0; height: 2px; background: var(--orange); content: ""; transform: scaleX(0); transform-origin: left; transition: transform 0.25s ease; }
header .header-nav-list a:hover::after, header .header-nav-list a.is-current::after { transform: scaleX(1); }
header .header-nav-action { display: flex; align-items: center; gap: 14px; }
header .header-nav-action a { padding: 9px 0; border-bottom: 2px solid var(--orange); font-size: 14px; font-weight: 800; }
header .header-menu-toggle { display: none; min-height: 44px; padding: 8px 0 8px 26px; border: 0; background: transparent; cursor: pointer; font-size: 14px; font-weight: 800; }
header .header-menu-toggle::before, header .header-menu-toggle::after { position: absolute; width: 17px; height: 2px; background: var(--sea); content: ""; transition: transform 0.25s ease, top 0.25s ease; }
header .header-intro { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.65fr); gap: clamp(48px, 8vw, 128px); align-items: end; width: min(var(--container), calc(100% - (var(--page-gutter) * 2))); margin: 0 auto; padding: clamp(72px, 8vw, 122px) 0 clamp(54px, 6vw, 92px); }
header .header-kicker { display: flex; align-items: center; gap: 14px; margin: 0 0 26px; color: var(--orange-dark); font-size: 14px; font-weight: 800; letter-spacing: 0.12em; }
header .header-kicker::before { width: 52px; height: 2px; background: var(--orange); content: ""; }
header h1 { max-width: 930px; margin: 0; color: var(--deep-sea); font-size: clamp(38px, 5.2vw, 68px); line-height: 1.18; letter-spacing: -0.035em; }
header h1 span { display: block; margin-top: 10px; color: #536970; font-size: 0.4em; font-weight: 600; letter-spacing: 0.04em; }
header .header-description { max-width: 720px; margin: 30px 0 0; color: #405860; font-size: clamp(17px, 1.45vw, 21px); line-height: 1.9; }
header .header-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
header .header-summary { margin: 0; border-top: 2px solid var(--sea); }
header .header-summary-row { display: grid; grid-template-columns: 92px 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
header .header-summary dt { color: #6b7a80; font-size: 13px; font-weight: 700; letter-spacing: 0.08em; }
header .header-summary dd { margin: 0; color: var(--deep-sea); font-size: 15px; font-weight: 700; line-height: 1.6; }
header .header-media { position: relative; min-height: 570px; overflow: hidden; background: var(--deep-sea); }
header .header-media > img { height: clamp(570px, 62vw, 830px); object-fit: cover; object-position: center 44%; filter: saturate(0.72) contrast(1.08); }
header .header-media::after { position: absolute; inset: 0; background: rgba(4, 27, 38, 0.34); content: ""; }
header .header-media-layout { position: absolute; inset: 0; z-index: 2; display: grid; grid-template-columns: minmax(240px, 0.55fr) minmax(0, 1.45fr); align-items: end; gap: 8vw; width: min(var(--container), calc(100% - (var(--page-gutter) * 2))); margin: auto; padding: clamp(36px, 5vw, 76px) 0; color: var(--white); }
header .header-alert { max-width: 330px; padding: 24px 26px; border-left: 5px solid var(--orange); background: rgba(6, 31, 43, 0.88); }
header .header-alert-label { margin: 0 0 12px; color: #ffc1a7; font-size: 13px; font-weight: 800; letter-spacing: 0.12em; }
header .header-alert strong { display: block; font-size: clamp(23px, 2.2vw, 32px); line-height: 1.35; }
header .header-alert p { margin: 12px 0 0; color: #ced8dc; font-size: 15px; line-height: 1.8; }
header .header-radar-zone { position: relative; justify-self: end; width: min(46vw, 560px); aspect-ratio: 1; }
header .hero-radar { position: absolute; inset: 0; border: 1px solid rgba(255, 255, 255, 0.42); border-radius: 50%; background: repeating-radial-gradient( circle, transparent 0, transparent 19%, rgba(255, 255, 255, 0.24) 19.4%, transparent 20.1% ); }
header .hero-radar::before { position: absolute; top: 50%; left: 0; width: 100%; height: 1px; background: rgba(255, 255, 255, 0.36); content: ""; }
header .hero-radar::after { position: absolute; top: 0; left: 50%; width: 1px; height: 100%; background: rgba(255, 255, 255, 0.36); content: ""; }
header .hero-radar-scan { position: absolute; inset: 4%; overflow: hidden; border-radius: 50%; transform: rotate(-35deg); }
header .hero-radar-scan::before { position: absolute; top: 50%; left: 50%; width: 50%; height: 44%; background: rgba(241, 106, 50, 0.3); clip-path: polygon(0 0, 100% 0, 100% 100%); content: ""; transform-origin: 0 0; }
header.is-ready .hero-radar-scan::before { animation: radar-scan 1.5s cubic-bezier(0.4, 0, 0.2, 1) 1; }
header .hero-radar-point { position: absolute; top: 31%; left: 63%; width: 12px; aspect-ratio: 1; border: 3px solid var(--orange); border-radius: 50%; background: var(--deep-sea); box-shadow: 0 0 0 7px rgba(241, 106, 50, 0.25); }
header .header-radar-note { position: absolute; right: 0; bottom: -22px; display: grid; grid-template-columns: auto auto; gap: 5px 22px; padding: 16px 18px; border-top: 2px solid var(--orange); background: var(--cold-white); color: var(--deep-sea); }
header .header-radar-note span { color: #65757b; font-size: 12px; font-weight: 700; }
header .header-radar-note strong { font-size: 14px; }

/* bureau */
#bureau { padding: var(--section-space) 0; background: var(--cold-white); }
#bureau .bureau-layout { display: grid; grid-template-columns: 170px minmax(0, 0.8fr) minmax(420px, 1.25fr); gap: clamp(36px, 5vw, 82px); align-items: start; }
#bureau .bureau-rail { position: sticky; top: 106px; padding-top: 10px; border-top: 3px solid var(--orange); }
#bureau .bureau-rail strong { display: block; color: var(--sea); font-size: 15px; line-height: 1.5; }
#bureau .bureau-rail span { display: block; margin-top: 8px; color: #718087; font-size: 13px; line-height: 1.6; }
#bureau .bureau-copy { padding-top: 4px; }
#bureau .bureau-copy p:not(.eyebrow) { max-width: 590px; margin: 30px 0 0; color: #465c65; }
#bureau .bureau-principles { margin: 42px 0 0; padding: 0; list-style: none; }
#bureau .bureau-principles li { display: grid; grid-template-columns: 26px 1fr; gap: 15px; padding: 15px 0; border-top: 1px solid var(--line); font-weight: 700; }
#bureau .bureau-principles li::before { color: var(--orange-dark); content: "＋"; }
#bureau .bureau-visual { position: relative; padding-bottom: 54px; }
#bureau .bureau-visual img { aspect-ratio: 4/3; object-fit: cover; object-position: center; filter: saturate(0.7) contrast(1.04); }
#bureau .bureau-caption { position: absolute; right: -24px; bottom: 0; width: min(78%, 430px); padding: 22px 25px; border-top: 4px solid var(--orange); background: var(--deep-sea); color: var(--white); }
#bureau .bureau-caption strong { display: block; font-size: 18px; }
#bureau .bureau-caption span { display: block; margin-top: 7px; color: #bdcbd0; font-size: 14px; line-height: 1.7; }

/* events */
#events { padding: var(--section-space) 0; background: var(--deep-sea); color: var(--white); }
#events .events-heading-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, 0.65fr); gap: 70px; align-items: end; margin-bottom: 58px; }
#events .eyebrow { color: #ff9b70; }
#events .section-lead { color: #c4d0d4; }
#events .events-console { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(390px, 0.75fr); min-height: 690px; border-top: 1px solid var(--dark-line); border-bottom: 1px solid var(--dark-line); }
#events .events-visual { position: relative; overflow: hidden; }
#events .events-visual img { height: 100%; min-height: 690px; object-fit: cover; object-position: center; filter: saturate(0.65) contrast(1.12); transition: opacity 0.28s ease, transform 0.6s ease, filter 0.45s ease; }
#events .events-visual.is-changing img { opacity: 0.25; transform: scale(1.025); filter: saturate(0.2); }
#events .events-visual::after { position: absolute; inset: 0; background: rgba(6, 31, 43, 0.18); content: ""; }
#events .events-reading { position: absolute; z-index: 2; right: 0; bottom: 0; width: min(76%, 580px); padding: 32px 36px; background: rgba(242, 245, 244, 0.94); color: var(--deep-sea); }
#events .events-reading-tag { margin: 0; color: var(--orange-dark); font-size: 13px; font-weight: 800; letter-spacing: 0.12em; }
#events .events-reading h3 { margin: 9px 0 12px; font-size: clamp(25px, 2.4vw, 36px); line-height: 1.3; }
#events .events-reading p:last-child { margin: 0; color: #455c64; font-size: 15px; }
#events .events-list { display: flex; flex-direction: column; border-left: 1px solid var(--dark-line); }
#events .event-switch { position: relative; flex: 1; display: grid; grid-template-columns: 86px 1fr auto; align-items: center; gap: 20px; min-height: 132px; padding: 24px 30px; border: 0; border-bottom: 1px solid var(--dark-line); background: transparent; color: var(--white); text-align: left; cursor: pointer; transition: background 0.25s ease, color 0.25s ease; }
#events .event-switch:last-child { border-bottom: 0; }
#events .event-switch:hover { background: rgba(255, 255, 255, 0.05); }
#events .event-switch.is-active { background: var(--orange); color: var(--deep-sea); }
#events .event-code { font-size: 12px; font-weight: 800; letter-spacing: 0.12em; }
#events .event-name { font-size: 19px; font-weight: 800; line-height: 1.45; }
#events .event-status { font-size: 13px; font-weight: 700; }
#events .event-switch::after { content: "↗"; font-size: 20px; }
#events .event-switch.is-active::after { transform: rotate(45deg); }

/* operations */
#operations { padding: var(--section-space) 0; background: var(--paper); }
#operations .operations-layout { display: grid; grid-template-columns: minmax(320px, 0.7fr) minmax(0, 1.3fr); gap: clamp(58px, 8vw, 132px); align-items: center; }
#operations .operations-copy { max-width: 560px; }
#operations .operations-copy .section-lead { margin-bottom: 38px; }
#operations .operations-status-list { margin: 0; border-top: 2px solid var(--sea); }
#operations .operations-status-row { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 19px 0; border-bottom: 1px solid var(--line); }
#operations .operations-status-row dt { color: #6b7a80; font-size: 13px; font-weight: 800; }
#operations .operations-status-row dd { margin: 0; font-size: 15px; font-weight: 700; }
#operations .operations-map { position: relative; min-height: 690px; padding: 54px; background: var(--sea); color: var(--white); }
#operations .operations-map-head { display: flex; justify-content: space-between; gap: 30px; padding-bottom: 22px; border-bottom: 1px solid var(--dark-line); }
#operations .operations-map-head strong { font-size: 18px; }
#operations .operations-map-head span { color: #b9cbd2; font-size: 13px; font-weight: 700; }
#operations .operations-map svg { width: 100%; height: 460px; margin-top: 34px; }
#operations .map-zone { fill: rgba(255, 255, 255, 0.08); stroke: rgba(255, 255, 255, 0.52); stroke-width: 2; transition: fill 0.3s ease, stroke 0.3s ease; }
#operations .map-zone.is-alert { fill: rgba(241, 106, 50, 0.42); stroke: #ff9a6d; }
#operations .map-route { fill: none; stroke: rgba(255, 255, 255, 0.4); stroke-width: 3; stroke-dasharray: 8 9; }
#operations .map-station { fill: var(--cold-white); stroke: var(--orange); stroke-width: 5; }
#operations .operations-map-note { position: absolute; right: 38px; bottom: 32px; max-width: 290px; padding: 18px 20px; border-left: 4px solid var(--orange); background: var(--cold-white); color: var(--deep-sea); }
#operations .operations-map-note strong { display: block; font-size: 16px; }
#operations .operations-map-note span { display: block; margin-top: 5px; color: #61747b; font-size: 13px; line-height: 1.65; }

/* systems */
#systems { padding: var(--section-space) 0; background: var(--cold-white); }
#systems .systems-intro { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(300px, 0.5fr); justify-content: space-between; gap: 80px; align-items: end; margin-bottom: 70px; }
#systems .systems-intro .section-lead { margin: 0; }
#systems .systems-media { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr); min-height: 520px; margin-bottom: 70px; background: var(--fog); }
#systems .systems-media figure { position: relative; margin: 0; overflow: hidden; }
#systems .systems-media img { height: 100%; min-height: 520px; object-fit: cover; object-position: center 35%; filter: saturate(0.55) contrast(1.06); }
#systems .systems-media-copy { display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(34px, 5vw, 68px); background: var(--orange); color: var(--deep-sea); }
#systems .systems-media-copy span { font-size: 13px; font-weight: 800; letter-spacing: 0.12em; }
#systems .systems-media-copy h3 { margin: 14px 0 20px; font-size: clamp(27px, 3vw, 42px); line-height: 1.28; }
#systems .systems-media-copy p { margin: 0; font-size: 16px; line-height: 1.8; }
#systems .systems-list { margin: 0; padding: 0; border-top: 2px solid var(--sea); list-style: none; }
#systems .systems-row { display: grid; grid-template-columns: 180px minmax(200px, 0.55fr) minmax(300px, 1fr) 40px; gap: 30px; align-items: start; padding: 27px 4px; border-bottom: 1px solid var(--line); }
#systems .systems-row-label { color: var(--orange-dark); font-size: 13px; font-weight: 800; letter-spacing: 0.08em; }
#systems .systems-row strong { font-size: 20px; line-height: 1.5; }
#systems .systems-row p { max-width: 650px; margin: 0; color: #52676f; font-size: 15px; line-height: 1.8; }
#systems .systems-row::after { color: var(--sea); content: "＋"; font-size: 22px; font-weight: 500; }

/* decision */
#decision { position: relative; min-height: 760px; overflow: hidden; background: var(--deep-sea); color: var(--white); }
#decision .decision-image { position: absolute; inset: 0; }
#decision .decision-image img { height: 100%; object-fit: cover; object-position: center 42%; filter: saturate(0.5) contrast(1.15); }
#decision .decision-image::after { position: absolute; inset: 0; background: rgba(5, 26, 36, 0.61); content: ""; }
#decision .decision-shell { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 0.82fr) minmax(360px, 0.72fr); justify-content: space-between; gap: 10vw; align-items: center; min-height: 760px; padding-top: 90px; padding-bottom: 90px; }
#decision .eyebrow { color: #ff9b70; }
#decision .decision-copy { max-width: 650px; }
#decision .decision-copy p:not(.eyebrow) { max-width: 600px; margin: 28px 0 0; color: #d3dce0; }
#decision .decision-scenario { border-top: 4px solid var(--orange); background: rgba(242, 245, 244, 0.95); color: var(--deep-sea); }
#decision .decision-scenario-head { padding: 26px 30px; border-bottom: 1px solid var(--line); }
#decision .decision-scenario-head span { color: var(--orange-dark); font-size: 12px; font-weight: 800; letter-spacing: 0.12em; }
#decision .decision-scenario-head h3 { margin: 8px 0 0; font-size: 25px; line-height: 1.4; }
#decision .decision-option { display: grid; grid-template-columns: 32px 1fr; gap: 16px; padding: 24px 30px; border-bottom: 1px solid var(--line); }
#decision .decision-option:last-child { border-bottom: 0; }
#decision .decision-option strong { color: var(--orange-dark); font-size: 14px; }
#decision .decision-option span { font-size: 15px; font-weight: 700; line-height: 1.7; }

/* technology */
#technology { padding: var(--section-space) 0; background: var(--cold-white); }
#technology .technology-layout { display: grid; grid-template-columns: minmax(400px, 1.05fr) minmax(320px, 0.75fr); gap: clamp(56px, 8vw, 126px); align-items: center; }
#technology .technology-visual { position: relative; }
#technology .technology-visual img { aspect-ratio: 5/4; object-fit: cover; object-position: center; filter: saturate(0.58) contrast(1.05); }
#technology .technology-visual-note { position: absolute; top: 30px; left: -28px; width: 220px; padding: 18px 20px; background: var(--orange); color: var(--deep-sea); }
#technology .technology-visual-note strong { display: block; font-size: 16px; }
#technology .technology-visual-note span { display: block; margin-top: 5px; font-size: 12px; font-weight: 700; line-height: 1.6; }
#technology .technology-copy { max-width: 590px; }
#technology .technology-path { margin: 42px 0 0; padding: 0; border-left: 2px solid var(--fog); list-style: none; }
#technology .technology-path li { position: relative; padding: 0 0 30px 32px; }
#technology .technology-path li:last-child { padding-bottom: 0; }
#technology .technology-path li::before { position: absolute; top: 5px; left: -7px; width: 12px; aspect-ratio: 1; border: 3px solid var(--cold-white); border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 1px var(--orange); content: ""; }
#technology .technology-path strong { display: block; font-size: 18px; }
#technology .technology-path span { display: block; margin-top: 6px; color: #536970; font-size: 15px; line-height: 1.75; }

/* release */
#release { padding: clamp(88px, 9vw, 138px) 0; background: var(--orange); color: var(--deep-sea); }
#release .release-layout { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.55fr); gap: clamp(50px, 8vw, 130px); align-items: end; }
#release .release-label { margin: 0 0 20px; font-size: 14px; font-weight: 800; letter-spacing: 0.13em; }
#release h2 { max-width: 900px; margin: 0; font-size: clamp(32px, 4.5vw, 58px); line-height: 1.22; letter-spacing: -0.03em; }
#release .release-side { padding-top: 24px; border-top: 2px solid var(--deep-sea); }
#release .release-side p { margin: 0 0 28px; font-size: 16px; font-weight: 600; line-height: 1.85; }
#release .release-actions { display: flex; flex-wrap: wrap; gap: 12px; }
#release .primary-link { border-color: var(--deep-sea); background: var(--deep-sea); color: var(--white); }
#release .secondary-link { color: var(--deep-sea); }

/* footer */
footer { background: var(--deep-sea); color: var(--white); }
footer .footer-main { display: grid; grid-template-columns: minmax(300px, 1fr) minmax(400px, 0.8fr); gap: 90px; width: min(var(--container), calc(100% - (var(--page-gutter) * 2))); margin: 0 auto; padding: 76px 0 58px; }
footer .footer-brand { max-width: 660px; }
footer .footer-brand strong { display: block; font-size: clamp(27px, 3vw, 42px); line-height: 1.25; }
footer .footer-brand span { display: block; margin-top: 12px; color: #9fb1b8; font-size: 15px; }
footer .footer-nav-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px 32px; margin: 0; padding: 0; list-style: none; }
footer .footer-nav-list a { display: block; padding: 10px 0; border-bottom: 1px solid var(--dark-line); color: #d7e0e3; font-size: 14px; font-weight: 700; }
footer .footer-bottom { border-top: 1px solid var(--dark-line); }
footer .footer-bottom-shell { display: flex; justify-content: space-between; gap: 30px; width: min(var(--container), calc(100% - (var(--page-gutter) * 2))); margin: 0 auto; padding: 22px 0 26px; color: #91a4ac; font-size: 13px; }
footer .footer-bottom-shell p { margin: 0; }

@keyframes radar-scan { 0% { transform: rotate(-120deg); opacity: 0; } 20% { opacity: 1; } 100% { transform: rotate(240deg); opacity: 0.9; } }

@media (max-width: 1280px) {
	:root { --page-gutter: 42px; --section-space: 118px; }
	header .header-nav-shell { grid-template-columns: minmax(220px, 1fr) auto auto; gap: 24px; }
	header .header-nav-list { gap: 21px; }
	header .header-intro { grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr); gap: 70px; }
	header .header-media { min-height: 600px; }
	header .header-radar-zone { width: min(44vw, 480px); }
	#bureau .bureau-layout { grid-template-columns: 130px minmax(0, 0.82fr) minmax(380px, 1.18fr); gap: 44px; }
	#events .events-console { grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr); }
	#operations .operations-map { padding: 42px; }
	#systems .systems-row { grid-template-columns: 140px minmax(190px, 0.5fr) minmax( 280px, 1fr ) 30px; gap: 24px; }
	footer .footer-main { gap: 60px; }
}
@media (max-width: 960px) {
	:root { --page-gutter: 32px; --section-space: 100px; }
	header { padding-top: 72px; }
	header .header-nav { height: 72px; }
	header .header-nav.is-scrolled { height: 64px; }
	
	header .header-nav-shell { grid-template-columns: minmax(0, 1fr) auto; gap: 16px; }
	header .header-nav-action { display: none; }
	header .header-brand { min-width: 0; overflow: hidden; }
	header .header-brand-copy { min-width: 0; }
	header .header-brand-copy strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
	header .header-menu-toggle { position: relative; display: flex; align-items: center; justify-content: flex-end; flex: 0 0 auto; width: auto; min-width: 88px; min-height: 44px; margin: 0; padding: 8px 0 8px 30px; border: 0; background: transparent; color: var(--deep-sea); line-height: 1; white-space: nowrap; cursor: pointer; }
	header .header-menu-toggle::before, header .header-menu-toggle::after { position: absolute; left: 0; width: 20px; height: 2px; margin: 0; background: var(--sea); content: ""; transform-origin: center; transition: top .25s ease, transform .25s ease; }
	header .header-menu-toggle::before { top: 17px; transform: none; }
	header .header-menu-toggle::after { top: 25px; transform: none; }
	header .header-menu-toggle[aria-expanded="true"]::before { top: 21px; transform: rotate(45deg); }
	header .header-menu-toggle[aria-expanded="true"]::after { top: 21px; transform: rotate(-45deg); }
	header .header-nav-list { position: fixed; top: 72px; right: 0; bottom: 0; left: 0; z-index: 99; display: flex; flex-direction: column; align-items: stretch; gap: 0; width: 100%; height: calc(100dvh - 72px); margin: 0; padding: 20px var(--page-gutter) 40px; overflow-y: auto; background: var(--cold-white); transform: translateX(100%); visibility: hidden; transition: transform .35s cubic-bezier(.2, .7, .3, 1), visibility 0s linear .35s; }
	header .header-nav-list.is-open { transform: translateX(0); visibility: visible; transition-delay: 0s; }
	header .header-nav-list li { border-bottom: 1px solid var(--line); }
	header .header-nav-list a { padding: 20px 0; font-size: 18px; }
	header .header-intro { grid-template-columns: 1fr; gap: 52px; padding-top: 82px; }
	header .header-summary { display: grid; grid-template-columns: repeat(3, 1fr); }
	header .header-summary-row { display: block; padding: 17px 16px 17px 0; }
	header .header-summary-row + .header-summary-row { padding-left: 20px; border-left: 1px solid var(--line); }
	header .header-summary dd { margin-top: 7px; }
	header .header-media-layout { grid-template-columns: minmax(220px, 0.7fr) minmax(320px, 1fr); gap: 50px; }
	header .header-radar-zone { width: min(48vw, 430px); }
	#bureau .bureau-layout { grid-template-columns: 120px minmax(0, 1fr); }
	#bureau .bureau-visual { grid-column: 2; margin-top: 18px; }
	#events .events-heading-row { grid-template-columns: 1fr; gap: 18px; }
	#events .events-console { grid-template-columns: 1fr; }
	#events .events-visual img { min-height: 580px; }
	#events .events-list { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--dark-line); border-left: 0; }
	#events .event-switch { min-height: 130px; border-right: 1px solid var(--dark-line); }
	#events .event-switch:nth-child(even) { border-right: 0; }
	#operations .operations-layout { grid-template-columns: 1fr; }
	#operations .operations-copy { max-width: 700px; }
	#systems .systems-intro { grid-template-columns: 1fr; gap: 20px; }
	#systems .systems-media { grid-template-columns: 1fr 330px; }
	#systems .systems-row { grid-template-columns: 120px minmax(170px, 0.55fr) minmax( 250px, 1fr ) 28px; gap: 18px; }
	#decision .decision-shell { grid-template-columns: 1fr 430px; gap: 56px; }
	#technology .technology-layout { grid-template-columns: 1fr; }
	#technology .technology-visual { order: 2; width: min(82%, 760px); margin-left: auto; }
	#technology .technology-copy { max-width: 720px; }
	#release .release-layout { grid-template-columns: 1fr; }
	#release .release-side { max-width: 650px; }
	footer .footer-main { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 768px) {
	:root { --page-gutter: 24px; --section-space: 82px; }
	body { font-size: 16px; }
	.section-heading { font-size: clamp(29px, 7vw, 40px); }
	.section-lead { font-size: 17px; }
	header .header-brand-copy span { display: none; }
	header .header-intro { padding-top: 64px; padding-bottom: 56px; }
	header h1 { max-width: 620px; font-size: clamp(36px, 9vw, 52px); }
	header h1 span { font-size: 0.35em; line-height: 1.5; }
	header .header-description { font-size: 17px; }
	header .header-summary { grid-template-columns: 1fr; }
	header .header-summary-row { display: grid; grid-template-columns: 100px 1fr; padding: 16px 0; }
	header .header-summary-row + .header-summary-row { padding-left: 0; border-left: 0; }
	header .header-summary dd { margin-top: 0; }
	header .header-media { min-height: 680px; }
	header .header-media > img { height: 680px; object-position: 58% center; }
	header .header-media-layout { display: flex; flex-direction: column-reverse; justify-content: flex-start; align-items: stretch; gap: 52px; padding-top: 50px; padding-bottom: 42px; }
	header .header-radar-zone { align-self: flex-end; width: min(72vw, 410px); }
	header .header-alert { max-width: 390px; }
	#bureau .bureau-layout { grid-template-columns: 1fr; }
	#bureau .bureau-rail { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
	#bureau .bureau-visual { grid-column: auto; }
	#bureau .bureau-caption { right: -12px; }
	#events .events-visual img { min-height: 520px; }
	#events .events-reading { width: 88%; padding: 26px; }
	#events .events-list { grid-template-columns: 1fr; }
	#events .event-switch { min-height: 104px; border-right: 0; }
	#operations .operations-map { min-height: 570px; padding: 28px 24px 120px; }
	#operations .operations-map svg { height: 360px; }
	#operations .operations-map-note { right: 24px; bottom: 24px; left: 24px; max-width: none; }
	#systems .systems-media { grid-template-columns: 1fr; }
	#systems .systems-media img { min-height: 430px; }
	#systems .systems-media-copy { min-height: 290px; }
	#systems .systems-row { grid-template-columns: 100px 1fr 28px; }
	#systems .systems-row p { grid-column: 2/4; }
	#decision { min-height: auto; }
	#decision .decision-shell { grid-template-columns: 1fr; min-height: 820px; align-content: center; gap: 52px; }
	#decision .decision-scenario { max-width: 520px; }
	#technology .technology-visual { width: calc(100% - 24px); margin-left: 24px; }
	#technology .technology-visual-note { top: auto; bottom: -28px; left: -24px; }
	#release h2 { font-size: clamp(32px, 8vw, 46px); }
	footer .footer-nav-list { grid-template-columns: repeat(2, 1fr); }
	footer .footer-bottom-shell { flex-direction: column; gap: 5px; }
}
@media (max-width: 500px) {
	:root { --page-gutter: 18px; --section-space: 70px; }
	body { font-size: 16px; line-height: 1.75; }
	.eyebrow { margin-bottom: 17px; font-size: 12px; }
	.section-heading { font-size: 32px; line-height: 1.32; }
	.section-lead { margin-top: 18px; font-size: 16px; line-height: 1.8; }
	.primary-link, .secondary-link { width: 100%; min-height: 52px; }
	header { padding-top: 66px; }
	header .header-nav { height: 66px; }
	header .header-nav.is-scrolled { height: 60px; }
	header .header-nav-shell { gap: 10px; }
	header .header-brand { gap: 9px; }
	header .header-brand-mark { flex: 0 0 34px; width: 34px; }
	header .header-brand-copy strong { max-width: none; font-size: 13px; }
	header .header-menu-toggle { min-width: 68px; min-height: 44px; padding-left: 27px; font-size: 13px; }
	header .header-menu-toggle::before, header .header-menu-toggle::after { width: 18px; }
	header .header-nav-list { top: 66px; height: calc(100dvh - 66px); padding-right: 18px; padding-left: 18px; }
	header .header-intro { padding-top: 48px; padding-bottom: 44px; }
	header .header-kicker { margin-bottom: 20px; font-size: 12px; }
	header h1 { font-size: 36px; line-height: 1.22; }
	header h1 span { margin-top: 8px; font-size: 14px; }
	header .header-description { margin-top: 22px; font-size: 16px; line-height: 1.8; }
	header .header-actions { display: grid; grid-template-columns: 1fr; margin-top: 28px; }
	header .header-summary-row { grid-template-columns: 82px 1fr; gap: 12px; }
	header .header-media { min-height: 650px; }
	header .header-media > img { height: 650px; object-position: 62% center; }
	header .header-media-layout { gap: 40px; padding-top: 38px; }
	header .header-radar-zone { width: 82vw; }
	header .header-radar-note { right: -5px; bottom: -25px; padding: 12px 14px; }
	header .header-alert { padding: 20px; }
	#bureau .bureau-rail { grid-template-columns: 1fr; }
	#bureau .bureau-copy p:not(.eyebrow) { margin-top: 22px; }
	#bureau .bureau-principles { margin-top: 30px; }
	#bureau .bureau-caption { position: relative; right: auto; bottom: auto; width: calc(100% - 18px); margin: -26px 0 0 18px; }
	#events .events-heading-row { margin-bottom: 36px; }
	#events .events-visual img { min-height: 500px; object-position: 58% center; }
	#events .events-reading { right: auto; bottom: 0; left: 0; width: calc(100% - 18px); padding: 22px; }
	#events .event-switch { grid-template-columns: 64px 1fr auto; gap: 12px; padding: 20px 18px; }
	#events .event-name { font-size: 17px; }
	#events .event-status { display: none; }
	#operations .operations-status-row { grid-template-columns: 100px 1fr; gap: 14px; }
	#operations .operations-map { min-height: 520px; }
	#operations .operations-map-head { flex-direction: column; gap: 4px; }
	#operations .operations-map svg { height: 290px; margin-top: 18px; }
	#systems .systems-media img { min-height: 350px; object-position: center; }
	#systems .systems-media-copy { min-height: 260px; padding: 28px 22px; }
	#systems .systems-row { grid-template-columns: 1fr 24px; padding: 23px 0; }
	#systems .systems-row-label { grid-column: 1; }
	#systems .systems-row strong { grid-column: 1; font-size: 18px; }
	#systems .systems-row p { grid-column: 1/3; }
	#systems .systems-row::after { grid-column: 2; grid-row: 1/3; }
	#decision .decision-shell { min-height: 900px; padding-top: 74px; padding-bottom: 74px; }
	#decision .decision-scenario-head, #decision .decision-option { padding-right: 22px; padding-left: 22px; }
	#technology .technology-layout { gap: 66px; }
	#technology .technology-visual { width: calc(100% - 14px); margin-left: 14px; }
	#technology .technology-visual img { aspect-ratio: 4/5; }
	#technology .technology-visual-note { left: -14px; width: 205px; }
	#release .release-actions { display: grid; grid-template-columns: 1fr; }
	footer .footer-main { padding-top: 58px; }
	footer .footer-nav-list { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after { animation-duration: 0.01ms; animation-iteration-count: 1; scroll-behavior: auto; transition-duration: 0.01ms; }
	.motion-block { opacity: 1; transform: none; }
}