@font-face {
  font-family: "DM Sans";
  src: url("/assets/fonts/dmsans.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #071219;
  --ink-2: #0a1a22;
  --panel: #10242c;
  --paper: #eef1ec;
  --paper-2: #f4f6f1;
  --text: #16262e;
  --muted-dark: #a7bcbb;
  --muted-paper: #4c6167;
  --line-dark: rgba(255, 255, 255, 0.14);
  --line-paper: #d2dad4;
  --lime: #cdf39a;
  --lime-deep: #3f6a2d;
  --amber: #f6b985;
  --font: "DM Sans", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --gutter: 96px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open { overflow: hidden; }

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3, p, dl, dd, dt, ol, ul, address { margin: 0; }
ul, ol { padding: 0; list-style: none; }

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

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 100;
  padding: 12px 18px;
  background: var(--lime);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}
.skip-link:focus { top: 14px; }

.shell {
  width: min(100% - var(--gutter), 1360px);
  margin-inline: auto;
}

/* ---------- type ---------- */

h1, h2, h3 { font-weight: 600; text-wrap: balance; }

h1 {
  font-size: clamp(46px, 5.6vw, 92px);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(32px, 3.9vw, 60px);
  line-height: 1.24;
  letter-spacing: -0.012em;
}

.section-kicker,
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #6f8b86;
}

.eyebrow-line {
  width: 26px;
  height: 1px;
  background: var(--lime);
  flex: 0 0 auto;
}

.eyebrow.light { color: #c2d2cd; }

/* ---------- header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  background: linear-gradient(180deg, rgba(5, 13, 18, 0.8), rgba(5, 13, 18, 0));
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.site-header.scrolled,
.site-header:has(.mobile-nav:not([hidden])) {
  background: rgba(7, 18, 25, 0.94);
  border-color: var(--line-dark);
  backdrop-filter: blur(14px);
}

.header-inner {
  height: 84px;
  display: flex;
  align-items: center;
  gap: 44px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  position: relative;
  display: inline-block;
}
.brand-mark span:nth-child(1),
.brand-mark span:nth-child(2) {
  position: absolute;
  width: 30px;
  height: 14px;
  border: 1.6px solid var(--lime);
  border-radius: 50%;
  left: 2px;
  top: 10px;
  transform: rotate(-38deg);
}
.brand-mark span:nth-child(2) { border-color: #7ea9a6; transform: rotate(38deg); }
.brand-mark span:nth-child(3) {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  left: 14px;
  top: 14px;
  box-shadow: 0 0 12px var(--lime);
}

.brand-word { display: flex; flex-direction: column; line-height: 1.05; }
.brand-word b { font-size: 17px; font-weight: 700; letter-spacing: 0.06em; }
.brand-word small { font-size: 8.5px; font-weight: 700; letter-spacing: 0.24em; color: #94a9a6; margin-top: 5px; }

.desktop-nav { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.desktop-nav a { font-size: 13px; font-weight: 500; color: #c2cfcd; transition: color 0.2s; }
.desktop-nav a:hover { color: var(--lime); }

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 11px 16px;
  border: 1px solid rgba(205, 243, 154, 0.45);
  color: var(--lime);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background 0.2s, color 0.2s;
}
.header-cta:hover { background: var(--lime); color: var(--ink); }

.menu-toggle, .mobile-nav { display: none; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  height: min(880px, 100svh);
  min-height: 640px;
  overflow: hidden;
  background: #0b1c25;
}

.hero-image {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(3, 10, 14, 0.94) 0%, rgba(4, 12, 17, 0.8) 34%, rgba(5, 14, 19, 0.18) 72%, rgba(5, 14, 19, 0.06) 100%),
    linear-gradient(0deg, #071219 0%, rgba(7, 18, 25, 0.05) 32%),
    url("/assets/reactor-hall.webp");
  background-size: cover;
  background-position: center, center, center 46%;
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.14) 1px, transparent 1px);
  background-size: 120px 120px;
  mask-image: linear-gradient(90deg, #000, transparent 62%);
}

.hero-content {
  position: relative;
  z-index: 1;
  height: calc(100% - 92px);
  padding-top: 140px;
  display: flex;
  flex-direction: column;
}

.hero-spacer { flex: 1; }
.hero-copy { padding-bottom: 52px; max-width: 760px; }

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: #dbe8e3;
  margin-bottom: 22px;
}
.hero-status i { width: 3px; height: 3px; border-radius: 50%; background: #93a7a6; margin: 0 6px; }

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(205, 243, 154, 0.12), 0 0 12px var(--lime);
  flex: 0 0 auto;
}

.hero h1 { color: #f7faf6; }
.hero h1 em { font-style: normal; color: var(--lime); }

.hero-copy p {
  margin: 26px 0 34px;
  max-width: 580px;
  font-size: 16.5px;
  line-height: 1.9;
  color: #c4d3d0;
}

.hero-actions { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-height: 50px;
  padding: 0 20px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}
.button span { font-size: 17px; font-weight: 400; }
.button-primary { background: var(--lime); color: #0b2016; }
.button-primary:hover { background: #dcffae; transform: translateY(-1px); }
.button-outline { color: var(--paper); border: 1px solid rgba(255, 255, 255, 0.45); }
.button-outline:hover { background: rgba(255, 255, 255, 0.1); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: #e4eeea;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  padding-bottom: 3px;
  transition: color 0.2s, border-color 0.2s;
}
.text-link:hover { color: var(--lime); border-color: var(--lime); }

.hero-rail {
  position: relative;
  z-index: 1;
  height: 92px;
  display: grid;
  grid-template-columns: repeat(3, 1fr) auto;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.rail-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 26px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
  height: 42px;
}
.rail-item:first-child { padding-left: 0; }
.rail-item span { font-size: 9.5px; font-weight: 700; letter-spacing: 0.16em; color: #8fa5a4; }
.rail-item strong { font-size: 13px; font-weight: 500; letter-spacing: 0.01em; }

.hero-rail > a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-left: 26px;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #a8bcba;
}
.hero-rail > a span { font-size: 15px; color: var(--lime); }

/* ---------- records ---------- */

.records {
  background: var(--ink-2);
  border-top: 1px solid var(--line-dark);
  padding: 56px 0 60px;
}

.records-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #8ba1a0;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line-dark);
}

.records-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 0;
  background: var(--line-dark);
}
.records-grid > div {
  background: var(--ink-2);
  padding: 30px 26px 26px 0;
}
.records-grid dt { font-size: 12px; color: var(--muted-dark); margin-bottom: 14px; }
.records-grid dd {
  font-size: clamp(38px, 4.4vw, 62px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: #f2f7f3;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.records-grid dd small {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.records-note {
  margin-top: 22px;
  font-size: 12px;
  line-height: 1.8;
  color: #8ba1a0;
  max-width: 640px;
}

/* ---------- sections ---------- */

.section { padding: 116px 0; scroll-margin-top: 84px; }

.intro { background: var(--paper); color: var(--text); }

.intro-layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 56px;
}

.section-index {
  display: flex;
  gap: 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: #6b7f80;
  padding-top: 8px;
}
.index-no { color: var(--lime-deep); }

.intro-body { max-width: 860px; }
.intro h2 { margin: 22px 0 26px; }
.intro h2 span { color: var(--muted-paper); }
.lead {
  font-size: 17.5px;
  line-height: 1.95;
  color: var(--muted-paper);
  max-width: 720px;
}

.spec-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 42px;
  border-top: 1px solid var(--line-paper);
}
.spec-chips li {
  padding: 18px 40px 0 0;
  margin-right: 40px;
  border-right: 1px solid var(--line-paper);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.spec-chips li:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.spec-chips b { font-size: 22px; font-weight: 600; letter-spacing: -0.01em; color: var(--text); }
.spec-chips span { font-size: 11.5px; color: var(--muted-paper); }

/* ---------- platforms ---------- */

.platforms { background: var(--ink-2); }

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 60px;
  margin-bottom: 46px;
}
.section-heading h2 { margin-top: 20px; }
.section-heading > p {
  max-width: 330px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted-dark);
  margin-bottom: 6px;
}
.platforms .section-kicker,
.engineering .section-kicker,
.milestones .section-kicker,
.delivery .section-kicker { color: #7d9a8c; }

.platform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.platform-card {
  position: relative;
  min-height: 600px;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  background: #142733;
  display: flex;
  flex-direction: column;
}

.platform-photo,
.platform-art { position: absolute; inset: 0; }

.platform-photo {
  background:
    linear-gradient(180deg, rgba(6, 16, 22, 0.62) 0%, rgba(7, 18, 25, 0.22) 38%, rgba(8, 20, 27, 0.96) 78%, #08141b 100%),
    url("/assets/turbine-hall.webp") center 64% / cover;
}

.platform-card.compact { background: #14262b; }
.platform-art {
  position: absolute;
  inset: 0 0 40% 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 22px 26px 0;
  background: radial-gradient(circle at 50% 46%, #1a3038 0%, #12242b 55%, #0d1d24 100%);
}
.platform-art img { width: auto; max-width: 100%; max-height: 100%; }

.platform-body {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.platform-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 24px 26px;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #b9cac7;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--lime);
}
.status-badge span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(205, 243, 154, 0.12);
}
.status-badge.pilot { color: var(--amber); }
.status-badge.pilot span { background: var(--amber); box-shadow: 0 0 0 3px rgba(246, 185, 133, 0.12); }

.platform-content {
  padding: 64px 28px 28px;
  background: linear-gradient(0deg, #08141b 6%, rgba(8, 20, 27, 0.92) 62%, rgba(8, 20, 27, 0) 100%);
}

.platform-label { font-size: 11.5px; letter-spacing: 0.1em; color: var(--lime); }
.compact .platform-label { color: var(--amber); }

.platform-content h3 {
  font-size: clamp(36px, 3.5vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 6px 0 14px;
}
.platform-content p { font-size: 14.5px; line-height: 1.85; color: #bfd0cc; max-width: 460px; }

.platform-specs {
  display: flex;
  gap: 0;
  margin: 24px 0 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}
.platform-specs > div {
  padding: 14px 26px 0 0;
  margin-right: 26px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}
.platform-specs > div:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.platform-specs dt { font-size: 10px; letter-spacing: 0.1em; color: #93a8a5; margin-bottom: 5px; }
.platform-specs dd { font-size: 14px; font-weight: 600; color: #ecf4ef; }

.platform-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--lime);
  border-bottom: 1px solid rgba(205, 243, 154, 0.4);
  padding-bottom: 3px;
  transition: border-color 0.2s, color 0.2s;
}
.compact .platform-link { color: var(--amber); border-color: rgba(246, 185, 133, 0.4); }
.platform-link:hover { border-color: currentColor; }
.platform-link span { font-size: 13px; }

/* ---------- engineering ---------- */

.engineering { background: var(--paper); color: var(--text); }

.engineering-header {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 12px 80px;
  align-items: end;
}
.engineering-header .section-kicker { grid-column: 1 / -1; }
.engineering-header h2 { margin-top: 20px; }
.engineering-header h2 span { color: var(--muted-paper); }
.engineering-header > p { font-size: 15px; line-height: 1.9; color: var(--muted-paper); margin-bottom: 8px; }

.system-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  margin-top: 54px;
  border: 1px solid var(--line-paper);
  background: var(--paper-2);
}

.system-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: #0c1f26;
  border-right: 1px solid var(--line-paper);
}
.system-visual img,
.system-visual .tk { width: 100%; max-width: 620px; display: block; height: auto; }

.system-list { display: grid; grid-template-rows: repeat(4, 1fr); }
.system-list article {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 26px 28px;
  border-bottom: 1px solid var(--line-paper);
}
.system-list article:last-child { border-bottom: 0; }
.sys-no { font-size: 11px; font-weight: 700; color: #5f7767; letter-spacing: 0.08em; padding-top: 4px; }
.system-list h3 { font-size: 17px; margin-bottom: 7px; letter-spacing: -0.01em; }
.system-list p { font-size: 13px; line-height: 1.8; color: var(--muted-paper); }
.sys-val {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--lime-deep);
  letter-spacing: 0.02em;
  padding-top: 5px;
  white-space: nowrap;
}

/* ---------- milestones ---------- */

.milestones { background: var(--ink); }

.timeline {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-dark);
  margin-top: 8px;
}
.timeline li {
  position: relative;
  padding: 26px 18px 0 0;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.timeline li:last-child { border-right: 0; padding-right: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  top: -3.5px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4d6367;
}
.timeline li.is-now::before { background: var(--lime); box-shadow: 0 0 0 4px rgba(205, 243, 154, 0.14); }
.timeline time {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #8ea4a2;
  margin-bottom: 12px;
}
.timeline li.is-now time { color: var(--lime); }
.timeline h3 { font-size: 14.5px; font-weight: 600; margin-bottom: 8px; line-height: 1.5; }
.timeline p { font-size: 12px; line-height: 1.75; color: #93a8a6; }

/* ---------- manufacturing ---------- */

.manufacturing {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--ink);
  scroll-margin-top: 84px;
}
.manufacturing-image {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 12, 17, 0.96) 0%, rgba(4, 12, 17, 0.86) 32%, rgba(4, 12, 17, 0.28) 68%),
    linear-gradient(0deg, rgba(4, 12, 17, 0.5), transparent 34%),
    url("/assets/manufacturing-hall.webp") center / cover;
}
.manufacturing-content { position: relative; z-index: 1; padding: 108px 0; }
.manufacturing .section-kicker { color: #93b07f; }
.manufacturing h2 {
  font-size: clamp(38px, 5.2vw, 78px);
  line-height: 1.16;
  margin: 22px 0 24px;
  letter-spacing: -0.02em;
}
.manufacturing h2 em { font-style: normal; color: var(--lime); }
.manufacturing p { max-width: 520px; font-size: 15.5px; line-height: 1.9; color: #c2d1ce; margin-bottom: 30px; }

/* ---------- delivery ---------- */

.delivery { background: var(--paper); color: var(--text); }

.scale-heading { max-width: 640px; margin-bottom: 46px; }
.scale-heading h2 { margin-top: 20px; }

.delivery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-paper);
}
.delivery-grid > div {
  padding: 24px 26px 26px 0;
  margin-right: 26px;
  border-right: 1px solid var(--line-paper);
}
.delivery-grid > div:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.delivery-grid span { font-size: 10px; font-weight: 700; letter-spacing: 0.18em; color: var(--lime-deep); }
.delivery-grid h3 { font-size: 16px; margin: 42px 0 8px; letter-spacing: -0.01em; }
.delivery-grid h3 b { font-weight: 600; color: var(--lime-deep); }
.delivery-grid p { font-size: 12.5px; line-height: 1.8; color: var(--muted-paper); }

/* ---------- contact ---------- */

.contact { background: var(--ink-2); color: var(--paper); }

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: 80px;
}
.contact h2 { margin-top: 20px; }
.contact h2 em { font-style: normal; color: var(--lime); }

.contact-body > p { font-size: 15px; line-height: 1.9; color: var(--muted-dark); margin-bottom: 28px; max-width: 460px; }

.contact-list { border-top: 1px solid var(--line-dark); }
.contact-list a {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-dark);
  transition: color 0.2s, padding-left 0.2s;
}
.contact-list a:hover { color: var(--lime); padding-left: 8px; }
.contact-list span { font-size: 11.5px; letter-spacing: 0.08em; color: #8ea4a2; }
.contact-list b { font-size: 16px; font-weight: 500; letter-spacing: 0.01em; }
.contact-list i { font-style: normal; font-size: 15px; color: var(--lime); text-align: right; }

.contact-body address {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-style: normal;
  font-size: 12.5px;
  line-height: 1.8;
  color: #8ea4a2;
}

/* ---------- sources ---------- */

.sources { background: var(--paper); color: var(--text); padding: 74px 0 84px; }

.sources-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 70px;
}
.sources h2 { font-size: clamp(26px, 2.4vw, 34px); margin: 16px 0 14px; letter-spacing: -0.01em; }
.sources p { font-size: 13px; line-height: 1.9; color: var(--muted-paper); max-width: 400px; }

.source-list { border-top: 1px solid var(--line-paper); }
.source-list a {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) 20px;
  gap: 16px;
  align-items: center;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-paper);
  transition: color 0.2s, padding-left 0.2s;
}
.source-list a:hover { color: var(--lime-deep); padding-left: 6px; }
.source-list span { font-size: 10px; font-weight: 700; letter-spacing: 0.1em; color: #566a67; }
.source-list b { font-size: 13.5px; font-weight: 600; }
.source-list i { font-style: normal; font-size: 14px; color: #6f8a76; text-align: right; }

/* ---------- footer ---------- */

.site-footer { background: var(--ink); color: var(--paper); }

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr) minmax(0, 1.2fr);
  align-items: start;
  gap: 44px;
  padding: 52px 0 64px;
}
.footer-line { font-size: 12.5px; line-height: 1.9; color: #93a8a6; }
.footer-main nav { display: flex; flex-wrap: wrap; gap: 18px; justify-content: flex-end; }
.footer-main nav a { font-size: 12px; color: #a9bab9; transition: color 0.2s; }
.footer-main nav a:hover { color: var(--lime); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0 26px;
  border-top: 1px solid var(--line-dark);
  font-size: 10px;
  letter-spacing: 0.09em;
  color: #7e9395;
}

/* ---------- responsive ---------- */

@media (max-width: 1180px) {
  :root { --gutter: 64px; }
  .header-inner { gap: 28px; }
  .desktop-nav { gap: 22px; }
  .timeline { grid-template-columns: repeat(4, 1fr); row-gap: 30px; }
  .timeline li:nth-child(4n) { border-right: 0; }
  .timeline li:nth-child(n + 5) { padding-top: 26px; }
  .delivery-grid { grid-template-columns: repeat(2, 1fr); }
  .delivery-grid > div:nth-child(2n) { border-right: 0; margin-right: 0; padding-right: 0; }
  .delivery-grid > div:nth-child(n + 3) { border-top: 1px solid var(--line-paper); }
}

@media (max-width: 980px) {
  .platform-grid { grid-template-columns: 1fr; }
  .platform-card { min-height: 520px; }
  .engineering-header { grid-template-columns: 1fr; gap: 18px; }
  .engineering-header > p { margin-bottom: 0; }
  .system-stage { grid-template-columns: 1fr; }
  .system-visual { border-right: 0; border-bottom: 1px solid var(--line-paper); }
  .contact-layout { grid-template-columns: 1fr; gap: 36px; }
  .sources-layout { grid-template-columns: 1fr; gap: 32px; }
  .records-grid { grid-template-columns: repeat(2, 1fr); }
  .records-grid > div:nth-child(2n) { padding-right: 0; }
  .records-grid > div:nth-child(n + 3) { border-top: 1px solid var(--line-dark); }
}

@media (max-width: 760px) {
  :root { --gutter: 40px; }

  h1 { font-size: clamp(38px, 10.2vw, 56px); line-height: 1.2; letter-spacing: -0.015em; }
  h2 { font-size: clamp(29px, 8vw, 40px); line-height: 1.28; }

  .header-inner { height: 70px; }
  .desktop-nav, .header-cta { display: none; }
  .brand-mark { transform: scale(0.9); }
  .brand-word b { font-size: 15.5px; }
  .menu-toggle {
    display: flex;
    margin-left: auto;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 6px;
  }
  .menu-toggle span { width: 16px; height: 1px; background: #e8f1eb; transition: transform 0.2s; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .mobile-nav:not([hidden]) {
    display: flex;
    position: absolute;
    inset: 70px 0 auto;
    background: #071219;
    flex-direction: column;
    padding: 10px 20px 24px;
    border-top: 1px solid var(--line-dark);
  }
  .mobile-nav a { padding: 15px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.1); font-size: 15px; }

  .hero { height: auto; min-height: 0; }
  .hero-image {
    background-image:
      linear-gradient(180deg, rgba(5, 13, 18, 0.82) 0%, rgba(6, 15, 20, 0.42) 20%, rgba(7, 18, 25, 0.08) 44%),
      linear-gradient(0deg, #071219 6%, rgba(7, 18, 25, 0.9) 38%, rgba(7, 18, 25, 0.25) 74%, rgba(7, 18, 25, 0.18)),
      url("/assets/reactor-hall.webp");
    background-position: center, center, 62% top;
  }
  .hero-content { height: auto; padding-top: 104px; }
  .hero-spacer { min-height: 150px; }
  .hero-copy { padding-bottom: 36px; }
  .eyebrow { font-size: 9px; letter-spacing: 0.15em; }
  .hero-status { font-size: 11px; flex-wrap: wrap; line-height: 1.6; gap: 8px; }
  .hero-copy p { font-size: 14.5px; line-height: 1.85; margin: 20px 0 26px; }
  .hero-actions { gap: 18px; }
  .button { min-height: 46px; padding: 0 16px; gap: 20px; font-size: 12.5px; }
  .hero-rail { height: auto; grid-template-columns: repeat(3, 1fr); padding: 18px 0 22px; }
  .hero-rail > a { display: none; }
  .rail-item { height: auto; padding-left: 12px; gap: 4px; }
  .rail-item span { font-size: 8px; }
  .rail-item strong { font-size: 11px; line-height: 1.4; }

  .records { padding: 40px 0 44px; }
  .records-head { font-size: 9px; flex-direction: column; gap: 6px; }
  .records-grid { grid-template-columns: 1fr 1fr; }
  .records-grid > div { padding: 22px 16px 18px 0; }
  .records-grid dt { font-size: 11px; margin-bottom: 10px; }
  .records-grid dd { font-size: 34px; }
  .records-note { font-size: 11px; }

  .section { padding: 72px 0; scroll-margin-top: 70px; }
  .intro-layout { display: block; }
  .section-index { margin-bottom: 30px; }
  .intro h2 { margin: 16px 0 18px; }
  .lead { font-size: 15px; }
  .spec-chips { margin-top: 30px; }
  .spec-chips li { padding: 14px 22px 0 0; margin-right: 22px; }
  .spec-chips b { font-size: 17px; }
  .spec-chips span { font-size: 10.5px; }

  .section-heading { display: block; margin-bottom: 28px; }
  .section-heading h2 { margin-top: 16px; }
  .section-heading > p { margin-top: 16px; font-size: 13.5px; max-width: none; }

  .platform-card { min-height: 480px; }
  .platform-top { padding: 18px 20px; font-size: 8.5px; }
  .platform-content { padding: 52px 20px 22px; }
  .platform-content h3 { font-size: 40px; }
  .platform-content p { font-size: 13.5px; }
  .platform-specs { margin: 20px 0 18px; }
  .platform-specs > div { padding-right: 16px; margin-right: 16px; }
  .platform-specs dd { font-size: 13px; }
  .platform-art { padding: 18px 18px 0; }

  .engineering-header h2 { margin-top: 16px; }
  .system-stage { margin-top: 32px; }
  .system-visual { padding: 14px; }
  .system-visual .tk-labels,
  .system-visual .tk-axis { display: none; }
  .system-list article { grid-template-columns: 24px minmax(0, 1fr); gap: 14px; padding: 20px; }
  .sys-val { grid-column: 2; padding-top: 0; font-size: 12px; }
  .system-list h3 { font-size: 15.5px; }
  .system-list p { font-size: 12.5px; }

  .timeline { grid-template-columns: 1fr; border-top: 0; border-left: 1px solid var(--line-dark); margin-left: 3px; }
  .timeline li { border-right: 0; padding: 0 0 26px 22px; }
  .timeline li::before { left: -4px; top: 7px; }
  .timeline h3 { font-size: 14px; }

  .manufacturing { min-height: 520px; }
  .manufacturing-content { padding: 84px 0; }
  .manufacturing h2 { font-size: clamp(32px, 9vw, 46px); line-height: 1.2; }
  .manufacturing p { font-size: 14px; }

  .delivery-grid { grid-template-columns: 1fr 1fr; }
  .delivery-grid > div { padding: 20px 16px 20px 0; margin-right: 16px; }
  .delivery-grid h3 { margin-top: 26px; font-size: 15px; }
  .delivery-grid p { font-size: 11.5px; }

  .contact-list a { grid-template-columns: 76px minmax(0, 1fr) 18px; gap: 10px; padding: 15px 0; }
  .contact-list b { font-size: 14.5px; }
  .contact-body address { font-size: 11.5px; }

  .sources { padding: 56px 0 64px; }
  .source-list a { grid-template-columns: 76px minmax(0, 1fr) 16px; gap: 10px; }
  .source-list b { font-size: 12.5px; }

  .footer-main { grid-template-columns: 1fr; gap: 24px; padding: 40px 0 48px; }
  .footer-main nav { justify-content: flex-start; gap: 14px; }
  .footer-bottom { flex-direction: column; gap: 6px; font-size: 9px; }
}

@media (max-width: 420px) {
  .records-grid { grid-template-columns: 1fr 1fr; }
  .delivery-grid { grid-template-columns: 1fr; }
  .delivery-grid > div { border-right: 0; margin-right: 0; padding-right: 0; }
  .delivery-grid > div + div { border-top: 1px solid var(--line-paper); }
  .spec-chips li:nth-child(2n) { border-right: 0; margin-right: 0; padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}