:root {
  color-scheme: dark;
  --ink: #031219;
  --deep: #041c27;
  --panel: #082b38;
  --panel-soft: rgba(7, 42, 55, 0.72);
  --line: rgba(154, 226, 236, 0.18);
  --line-strong: rgba(154, 226, 236, 0.36);
  --paper: #e8f4f3;
  --muted: #8da9af;
  --cyan: #5de4dd;
  --cyan-bright: #9af7ec;
  --blue: #5c9dff;
  --green: #8ff0a6;
  --violet: #a991ff;
  --orange: #ffb269;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.32);
  --radius: 26px;
  --shell: min(1240px, calc(100vw - 80px));
  --header-height: 92px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--paper);
  background:
    radial-gradient(circle at 12% 32%, rgba(38, 158, 164, 0.07), transparent 28%),
    linear-gradient(180deg, #03131b 0%, #041923 52%, #031219 100%);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  color: #021216;
  background: var(--cyan);
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

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

.shell {
  width: var(--shell);
  margin-inline: auto;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 16px;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 8px;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.scroll-progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 150;
  height: 2px;
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  box-shadow: 0 0 16px var(--cyan);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-height);
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto minmax(150px, 1fr);
  align-items: center;
  gap: 28px;
  padding: 0 42px;
  border-bottom: 1px solid transparent;
  transition: background 280ms ease, border-color 280ms ease, height 280ms ease, backdrop-filter 280ms ease;
}

.site-header.scrolled {
  height: 72px;
  background: rgba(2, 18, 25, 0.82);
  border-bottom-color: var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  width: max-content;
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 45px;
  height: 45px;
  overflow: hidden;
  color: var(--cyan-bright);
  background: rgba(93, 228, 221, 0.08);
  border: 1px solid rgba(93, 228, 221, 0.36);
  border-radius: 50%;
}

.brand-mark::before,
.brand-mark::after,
.brand-mark i {
  content: "";
  position: absolute;
  border: 1px solid rgba(93, 228, 221, 0.22);
  border-radius: 50%;
}

.brand-mark::before {
  width: 68px;
  height: 20px;
}

.brand-mark::after {
  width: 20px;
  height: 68px;
}

.brand-mark i {
  width: 30px;
  height: 30px;
}

.brand-mark b {
  position: relative;
  z-index: 2;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-copy strong {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.06em;
}

.brand-copy small {
  color: #73949c;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 8px;
  letter-spacing: 0.14em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 38px);
}

.site-nav a {
  position: relative;
  padding: 9px 0;
  color: #a6bec2;
  font-size: 13px;
  transition: color 180ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--paper);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 11px 14px 11px 18px;
  color: var(--ink);
  background: var(--paper);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease;
}

.nav-cta span {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 50%;
}

.nav-cta:hover {
  background: var(--cyan-bright);
  transform: translateY(-2px);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  color: inherit;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.menu-button span:not(.sr-only) {
  display: block;
  width: 17px;
  height: 1px;
  margin: 5px auto;
  background: var(--paper);
}

.hero {
  position: relative;
  min-height: 760px;
  height: 100svh;
  overflow: hidden;
  background:
    radial-gradient(circle at 72% 46%, rgba(32, 191, 184, 0.15), transparent 26%),
    linear-gradient(125deg, #02121a 0%, #062a35 45%, #031720 100%);
}

#ocean-canvas,
.hero-grid,
.sonar-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#ocean-canvas {
  opacity: 0.8;
}

.hero-grid {
  background-image:
    linear-gradient(rgba(126, 223, 226, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 223, 226, 0.035) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, transparent 0%, black 22%, black 82%, transparent 100%);
}

.hero-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0, rgba(255, 255, 255, 0.018) 1px, transparent 1px, transparent 4px);
  mix-blend-mode: overlay;
  pointer-events: none;
}

.sonar-field {
  left: 52%;
  width: 48%;
  opacity: 0.72;
  mask-image: radial-gradient(circle at center, black, transparent 72%);
}

.sonar-ring,
.sonar-sweep {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.sonar-ring {
  border: 1px solid rgba(93, 228, 221, 0.15);
  box-shadow: inset 0 0 70px rgba(93, 228, 221, 0.018);
}

.ring-one { width: 230px; height: 230px; }
.ring-two { width: 440px; height: 440px; }
.ring-three { width: 680px; height: 680px; }

.sonar-sweep {
  width: 680px;
  height: 680px;
  background: conic-gradient(from -55deg, transparent 0deg 320deg, rgba(93, 228, 221, 0.16) 348deg, rgba(93, 228, 221, 0.02) 360deg);
  animation: sonar-rotate 7s linear infinite;
}

@keyframes sonar-rotate {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: grid;
  grid-template-columns: minmax(440px, 0.95fr) minmax(440px, 1.05fr);
  align-items: center;
  gap: 32px;
  padding-top: var(--header-height);
  padding-bottom: 60px;
}

.hero-copy {
  position: relative;
  z-index: 5;
  padding-top: 24px;
}

.eyebrow,
.section-kicker,
.section-index,
.cross-label,
.mentor-role,
.project-code,
.project-category,
.direction-number,
.direction-en,
.training-intro > span,
.final-cta-inner > div:first-child > span {
  font-family: "SFMono-Regular", Consolas, monospace;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  color: #a2c1c5;
  font-size: 11px;
}

.eyebrow > span {
  width: 7px;
  height: 7px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(93, 228, 221, 0.1), 0 0 18px var(--cyan);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  50% { opacity: 0.45; box-shadow: 0 0 0 10px rgba(93, 228, 221, 0); }
}

.hero h1 {
  margin: 0;
  font-family: "Arial Narrow", "PingFang SC", sans-serif;
  font-size: clamp(64px, 7.2vw, 116px);
  font-weight: 780;
  line-height: 0.9;
  letter-spacing: -0.07em;
}

.hero h1 span,
.hero h1 em {
  display: block;
}

.hero h1 em {
  margin-top: 14px;
  color: transparent;
  font-style: normal;
  -webkit-text-stroke: 1px rgba(154, 247, 236, 0.76);
  text-shadow: 0 0 32px rgba(93, 228, 221, 0.12);
}

.hero-copy > p {
  max-width: 640px;
  margin: 34px 0 0;
  color: #a6bdc1;
  font-size: clamp(15px, 1.25vw, 18px);
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 35px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-width: 190px;
  padding: 16px 18px 16px 21px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 650;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
}

.button-primary {
  color: var(--ink);
  background: var(--cyan);
}

.button-primary span {
  background: rgba(2, 18, 22, 0.12);
}

.button-ghost {
  color: var(--paper);
  background: rgba(255, 255, 255, 0.035);
  border-color: var(--line);
  backdrop-filter: blur(12px);
}

.button-ghost span {
  border: 1px solid var(--line);
}

.button:hover {
  transform: translateY(-3px);
}

.button-ghost:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.07);
}

.hero-note {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  margin-top: 28px;
  color: #6f939a;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.signal-bars {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
}

.signal-bars i {
  width: 2px;
  background: var(--cyan);
  border-radius: 1px;
}

.signal-bars i:nth-child(1) { height: 4px; opacity: 0.5; }
.signal-bars i:nth-child(2) { height: 7px; opacity: 0.7; }
.signal-bars i:nth-child(3) { height: 10px; }
.signal-bars i:nth-child(4) { height: 12px; }

.hero-visual {
  position: relative;
  height: min(66vh, 620px);
  min-height: 480px;
}

.vehicle-scene {
  position: absolute;
  inset: 4% 0 3%;
  filter: drop-shadow(0 28px 45px rgba(0, 0, 0, 0.38));
}

.submersible {
  position: absolute;
  top: 46%;
  left: 50%;
  width: min(440px, 76%);
  height: 220px;
  transform: translate(-50%, -50%) rotate(-4deg);
  animation: vehicle-float 5.2s ease-in-out infinite;
}

@keyframes vehicle-float {
  50% { transform: translate(-50%, calc(-50% - 12px)) rotate(-1deg); }
}

.vehicle-glow {
  position: absolute;
  inset: 24% 5% 8%;
  background: rgba(72, 235, 223, 0.25);
  border-radius: 50%;
  filter: blur(48px);
}

.vehicle-body {
  position: absolute;
  top: 45px;
  left: 50%;
  width: 300px;
  height: 124px;
  background:
    linear-gradient(180deg, rgba(207, 247, 241, 0.95), rgba(91, 183, 180, 0.82) 52%, rgba(16, 78, 88, 0.94) 53%, rgba(5, 43, 54, 0.98));
  border: 1px solid rgba(199, 255, 247, 0.5);
  border-radius: 52% 38% 42% 48% / 48% 46% 54% 52%;
  box-shadow: inset 0 -18px 28px rgba(1, 18, 26, 0.55), 0 12px 26px rgba(0, 0, 0, 0.32);
  transform: translateX(-50%);
}

.vehicle-body::before {
  content: "";
  position: absolute;
  top: 50%;
  right: -34px;
  width: 62px;
  height: 44px;
  background: linear-gradient(90deg, #194d58, #061f29);
  border: 1px solid rgba(154, 247, 236, 0.25);
  clip-path: polygon(0 15%, 100% 0, 78% 100%, 0 78%);
  transform: translateY(-50%);
}

.vehicle-body::after {
  content: "";
  position: absolute;
  right: 38px;
  bottom: -22px;
  width: 85px;
  height: 34px;
  background: #061c25;
  border: 1px solid rgba(154, 247, 236, 0.18);
  clip-path: polygon(0 0, 100% 45%, 80% 100%, 10% 70%);
}

.porthole {
  position: absolute;
  top: 25px;
  left: 46px;
  width: 54px;
  height: 54px;
  background: radial-gradient(circle at 38% 32%, #bdfdf3 0 4%, #2995a3 17%, #063544 64%);
  border: 6px solid #1a525b;
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(93, 228, 221, 0.34), inset 0 0 12px rgba(93, 228, 221, 0.55);
}

.body-line {
  position: absolute;
  top: 62px;
  right: 72px;
  width: 92px;
  height: 1px;
  background: rgba(214, 255, 250, 0.45);
  box-shadow: 0 8px 0 rgba(214, 255, 250, 0.18);
}

.vehicle-label {
  position: absolute;
  right: 80px;
  bottom: 22px;
  color: rgba(205, 255, 248, 0.65);
  font-family: Consolas, monospace;
  font-size: 7px;
  letter-spacing: 0.12em;
}

.thruster {
  position: absolute;
  top: 64px;
  width: 82px;
  height: 82px;
  padding: 9px;
  background: #061c25;
  border: 1px solid rgba(154, 247, 236, 0.26);
  border-radius: 50%;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.42);
}

.thruster-left { left: 8px; }
.thruster-right { right: 8px; }

.thruster::before,
.thruster::after,
.thruster i {
  content: "";
  position: absolute;
  inset: 17px;
  background: linear-gradient(90deg, transparent 46%, #54cfc9 47% 53%, transparent 54%);
  border-radius: 50%;
}

.thruster::after { transform: rotate(60deg); }
.thruster i { transform: rotate(120deg); }

.camera-eye {
  position: absolute;
  top: 86px;
  right: 48px;
  width: 24px;
  height: 24px;
  background: #54fff1;
  border: 7px solid #082c36;
  border-radius: 50%;
  box-shadow: 0 0 18px var(--cyan);
}

.robot-arm {
  position: absolute;
  left: 100px;
  bottom: 12px;
  width: 105px;
  height: 62px;
  border-bottom: 7px solid #123d47;
  border-left: 7px solid #123d47;
  transform: skewX(-18deg) rotate(-9deg);
}

.robot-arm i {
  position: absolute;
  bottom: -12px;
  left: -14px;
  width: 22px;
  height: 22px;
  background: #1f6971;
  border: 5px solid #07232d;
  border-radius: 50%;
}

.robot-arm b::before,
.robot-arm b::after {
  content: "";
  position: absolute;
  right: -18px;
  bottom: -11px;
  width: 30px;
  height: 5px;
  background: #48bbb7;
  transform-origin: left center;
}

.robot-arm b::before { transform: rotate(32deg); }
.robot-arm b::after { transform: rotate(-32deg); }

.bubble {
  position: absolute;
  border: 1px solid rgba(154, 247, 236, 0.58);
  border-radius: 50%;
  animation: bubble-rise 4s ease-in infinite;
}

.bubble-one { top: 18px; left: 95px; width: 9px; height: 9px; }
.bubble-two { top: -6px; left: 72px; width: 5px; height: 5px; animation-delay: -1s; }
.bubble-three { top: 28px; left: 58px; width: 4px; height: 4px; animation-delay: -2.2s; }

@keyframes bubble-rise {
  to { transform: translate(-18px, -90px) scale(1.35); opacity: 0; }
}

.seabed-line {
  position: absolute;
  right: 2%;
  bottom: 9%;
  left: 2%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(154, 247, 236, 0.24), transparent);
  transform: rotate(-2deg);
}

.target {
  position: absolute;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(93, 228, 221, 0.45);
  border-radius: 50%;
}

.target::before,
.target::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: rgba(93, 228, 221, 0.45);
  transform: translate(-50%, -50%);
}

.target::before { width: 46px; height: 1px; }
.target::after { width: 1px; height: 46px; }
.target-a { top: 23%; right: 10%; }
.target-b { bottom: 17%; left: 11%; transform: scale(0.6); }

.hud {
  position: absolute;
  z-index: 4;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 118px;
  padding: 11px 13px;
  background: rgba(3, 26, 35, 0.62);
  border: 1px solid rgba(154, 247, 236, 0.18);
  backdrop-filter: blur(10px);
}

.hud::before,
.hud::after {
  content: "";
  position: absolute;
  width: 7px;
  height: 7px;
  border-color: var(--cyan);
}

.hud::before { top: -1px; left: -1px; border-top: 1px solid; border-left: 1px solid; }
.hud::after { right: -1px; bottom: -1px; border-right: 1px solid; border-bottom: 1px solid; }
.hud small { color: #73939a; font-family: Consolas, monospace; font-size: 8px; letter-spacing: 0.16em; }
.hud strong { color: #d8faf5; font-family: Consolas, monospace; font-size: 11px; letter-spacing: 0.08em; }
.hud strong i { color: #6e959a; font-size: 8px; font-style: normal; }
.hud-top { top: 6%; right: 3%; }
.hud-depth { right: 1%; bottom: 21%; }
.hud-depth strong { font-size: 18px; }
.hud-link { bottom: 11%; left: 3%; padding-left: 30px; }
.hud-link > span { position: absolute; top: 50%; left: 12px; width: 7px; height: 7px; background: var(--green); border-radius: 50%; box-shadow: 0 0 12px var(--green); transform: translateY(-50%); }

.coordinates {
  position: absolute;
  top: 9%;
  left: 4%;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #64878f;
  font-family: Consolas, monospace;
  font-size: 9px;
  letter-spacing: 0.11em;
}

.coordinates i { width: 32px; height: 1px; background: rgba(154, 247, 236, 0.3); }

.hero-bottom {
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: 24px;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #66858c;
  font-family: Consolas, monospace;
  font-size: 9px;
  letter-spacing: 0.12em;
}

.scroll-cue { display: flex; align-items: center; gap: 12px; }
.scroll-cue > span { position: relative; width: 28px; height: 28px; border: 1px solid rgba(154, 247, 236, 0.22); border-radius: 50%; }
.scroll-cue > span::after { content: ""; position: absolute; top: 7px; left: 50%; width: 1px; height: 9px; background: var(--cyan); animation: scroll-down 1.8s ease-in-out infinite; }
@keyframes scroll-down { 50% { transform: translateY(6px); opacity: 0.2; } }
.telemetry { display: flex; gap: 24px; }
.telemetry b { color: #b8d7d8; font-weight: 500; }

.ticker {
  position: relative;
  z-index: 5;
  overflow: hidden;
  padding: 15px 0;
  color: #a1ffff;
  background: #0c5960;
  border-top: 1px solid rgba(170, 255, 246, 0.25);
  border-bottom: 1px solid rgba(170, 255, 246, 0.25);
  transform: rotate(-1deg) scale(1.02);
}

.ticker-track {
  display: flex;
  align-items: center;
  gap: 26px;
  width: max-content;
  animation: ticker 30s linear infinite;
}

.ticker-track span { font-family: Consolas, monospace; font-size: 11px; letter-spacing: 0.12em; white-space: nowrap; }
.ticker-track i { width: 5px; height: 5px; background: var(--cyan); border-radius: 50%; }
@keyframes ticker { to { transform: translateX(-50%); } }

.section {
  position: relative;
  padding: clamp(96px, 10vw, 158px) 0;
}

.section-heading {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 34px;
  margin-bottom: 72px;
}

.section-index {
  padding-top: 8px;
  color: #66868d;
  font-size: 10px;
}

.section-kicker {
  margin: 0 0 20px;
  color: var(--cyan);
  font-size: 11px;
}

.section h2 {
  margin: 0;
  font-size: clamp(42px, 5.3vw, 78px);
  font-weight: 650;
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.section h2 em {
  color: #78979d;
  font-style: normal;
  font-weight: 420;
}

.section-about {
  padding-top: 170px;
}

.about-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 80px;
  margin-left: 244px;
}

.about-copy > p {
  max-width: 650px;
  color: #8fa8ad;
  font-size: 15px;
  line-height: 1.9;
}

.about-copy > .lead {
  margin-top: 0;
  color: #d2e4e3;
  font-size: 22px;
  line-height: 1.65;
}

.principles {
  display: grid;
  gap: 0;
  margin-top: 48px;
  border-top: 1px solid var(--line);
}

.principles article {
  display: grid;
  grid-template-columns: 44px 120px 1fr;
  align-items: center;
  gap: 12px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
}

.principles span { color: var(--cyan); font-family: Consolas, monospace; font-size: 10px; }
.principles strong { font-size: 14px; }
.principles small { color: #66868d; font-size: 12px; }

.stats-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-self: start;
  background: linear-gradient(145deg, rgba(9, 51, 63, 0.65), rgba(4, 28, 38, 0.9));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.stat-card {
  min-height: 178px;
  padding: 25px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stat-card:nth-child(even) { border-right: 0; }
.stat-card:nth-last-child(-n+2) { border-bottom: 0; }
.stat-code { display: block; margin-bottom: 28px; color: #51747c; font-family: Consolas, monospace; font-size: 8px; letter-spacing: 0.14em; }
.stat-value { display: flex; align-items: baseline; color: var(--cyan-bright); font-size: 52px; font-weight: 620; letter-spacing: -0.05em; line-height: 1; }
.stat-value small { margin-left: 4px; font-size: 15px; }
.stat-label { display: block; margin-top: 11px; color: #91aaae; font-size: 12px; }

.section-organization {
  background:
    linear-gradient(180deg, rgba(8, 44, 56, 0.45), rgba(2, 18, 25, 0.75)),
    repeating-linear-gradient(90deg, transparent 0, transparent calc(20% - 1px), rgba(154, 226, 236, 0.04) 20%);
  border-top: 1px solid rgba(154, 226, 236, 0.08);
  border-bottom: 1px solid rgba(154, 226, 236, 0.08);
}

.org-chart {
  position: relative;
  max-width: 1010px;
  margin-left: auto;
  padding-top: 10px;
}

.org-node {
  position: relative;
  width: min(440px, 100%);
  margin: 0 auto;
  padding: 20px 24px;
  text-align: center;
  background: rgba(5, 38, 48, 0.9);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
}

.org-node small { display: block; margin-bottom: 7px; color: var(--cyan); font-family: Consolas, monospace; font-size: 8px; letter-spacing: 0.14em; }
.org-node strong { display: block; font-size: 20px; }
.org-node span { display: block; margin-top: 7px; color: #78979d; font-size: 11px; }
.org-guidance { width: 310px; }
.org-presidium { background: linear-gradient(135deg, rgba(33, 111, 118, 0.78), rgba(7, 52, 64, 0.94)); }
.org-line.vertical { width: 1px; height: 40px; margin: 0 auto; background: var(--line-strong); }

.org-branches {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 70px;
}

.org-branches::before {
  content: "";
  position: absolute;
  top: -35px;
  right: 25%;
  left: 25%;
  height: 35px;
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
  border-left: 1px solid var(--line-strong);
}

.org-branches::after {
  content: "";
  position: absolute;
  top: -70px;
  left: 50%;
  width: 1px;
  height: 36px;
  background: var(--line-strong);
}

.org-committee {
  padding: 28px;
  background: rgba(3, 28, 38, 0.78);
  border: 1px solid var(--line);
  border-radius: 20px;
}

.tech-committee { box-shadow: inset 0 3px 0 var(--cyan); }
.ops-committee { box-shadow: inset 0 3px 0 var(--blue); }
.committee-title > span { color: #6c8c92; font-family: Consolas, monospace; font-size: 9px; letter-spacing: 0.12em; }
.committee-title h3 { margin: 15px 0 10px; font-size: 25px; }
.committee-title p { min-height: 48px; margin: 0; color: #79969c; font-size: 12px; line-height: 1.7; }
.org-groups { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 26px; }
.org-groups span { padding: 12px 10px; color: #b8ced0; background: rgba(255, 255, 255, 0.025); border: 1px solid rgba(154, 226, 236, 0.1); border-radius: 8px; font-size: 11px; text-align: center; }
.org-footnote { max-width: 700px; margin: 26px auto 0; color: #63848b; font-size: 11px; line-height: 1.7; text-align: center; }

.direction-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.direction-card {
  --accent: var(--cyan);
  position: relative;
  min-height: 370px;
  padding: 30px;
  overflow: hidden;
  background: linear-gradient(145deg, rgba(8, 46, 58, 0.74), rgba(3, 24, 33, 0.92));
  border: 1px solid var(--line);
  border-radius: 24px;
  transition: transform 200ms ease, border-color 200ms ease;
  transform-style: preserve-3d;
}

.direction-card[data-accent="blue"] { --accent: var(--blue); }
.direction-card[data-accent="green"] { --accent: var(--green); }
.direction-card[data-accent="violet"] { --accent: var(--violet); }

.direction-card::before {
  content: "";
  position: absolute;
  top: -130px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 20%, transparent), transparent 68%);
  border-radius: 50%;
  transition: transform 400ms ease;
}

.direction-card::after {
  content: "";
  position: absolute;
  right: 30px;
  bottom: 30px;
  width: 130px;
  height: 130px;
  background: repeating-radial-gradient(circle, transparent 0 18px, color-mix(in srgb, var(--accent) 18%, transparent) 19px 20px);
  border-radius: 50%;
  opacity: 0.7;
}

.direction-card:hover { border-color: color-mix(in srgb, var(--accent) 48%, transparent); }
.direction-card:hover::before { transform: scale(1.3); }
.direction-number { color: #587982; font-size: 9px; }
.direction-code { margin: 50px 0 7px; color: var(--accent); font-size: clamp(52px, 6vw, 82px); font-weight: 750; letter-spacing: -0.06em; line-height: 0.9; }
.direction-card h3 { margin: 18px 0 7px; font-size: 21px; }
.direction-en { color: #57767e; font-size: 8px; }
.direction-card p { position: relative; z-index: 2; max-width: 72%; margin: 27px 0 0; color: #8ba5aa; font-size: 13px; line-height: 1.75; }
.direction-tags { position: absolute; z-index: 2; right: 28px; bottom: 27px; left: 28px; display: flex; flex-wrap: wrap; gap: 7px; }
.direction-tags span { padding: 6px 9px; color: #76969c; background: rgba(0, 0, 0, 0.14); border: 1px solid var(--line); border-radius: 999px; font-size: 9px; }

.cross-lab {
  display: grid;
  grid-template-columns: 130px 1fr 50px;
  align-items: center;
  gap: 30px;
  margin-top: 18px;
  padding: 30px 34px;
  background: rgba(93, 228, 221, 0.07);
  border: 1px solid rgba(93, 228, 221, 0.24);
  border-radius: 18px;
}

.cross-label { color: var(--cyan); font-size: 9px; }
.cross-lab p { margin: 0 0 7px; color: #678a91; font-size: 11px; }
.cross-lab h3 { margin: 0; font-size: 17px; font-weight: 520; }
.cross-arrow { display: grid; place-items: center; width: 40px; height: 40px; color: var(--ink); background: var(--cyan); border-radius: 50%; font-size: 18px; }

.section-projects {
  background: #e7f0ee;
  color: #09202a;
}

.section-projects .section-index { color: #789296; }
.section-projects .section-kicker { color: #177d83; }
.section-projects h2 em { color: #789296; }
.project-toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin: -28px 0 28px 244px; }
.filter-button { padding: 10px 17px; color: #557076; background: transparent; border: 1px solid rgba(9, 32, 42, 0.16); border-radius: 999px; cursor: pointer; font-size: 11px; transition: 180ms ease; }
.filter-button:hover,
.filter-button.active { color: #e7f0ee; background: #082d38; border-color: #082d38; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-left: 244px;
}

.project-card {
  position: relative;
  min-height: 340px;
  padding: 27px;
  background: rgba(255, 255, 255, 0.48);
  border: 1px solid rgba(9, 32, 42, 0.12);
  border-radius: 20px;
  transition: transform 220ms ease, box-shadow 220ms ease, opacity 220ms ease;
}

.project-card:hover { transform: translateY(-5px); box-shadow: 0 22px 55px rgba(5, 37, 47, 0.1); }
.project-card[hidden] { display: none; }
.project-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.project-code { color: #789296; font-size: 9px; }
.project-category { padding: 7px 9px; color: #176e74; background: rgba(28, 128, 132, 0.08); border-radius: 999px; font-size: 8px; }
.project-card h3 { max-width: 390px; margin: 55px 0 15px; font-size: 28px; line-height: 1.2; letter-spacing: -0.04em; }
.project-card > p { margin: 0; color: #647d82; font-size: 12px; line-height: 1.8; }
.project-meta { position: absolute; right: 27px; bottom: 27px; left: 27px; }
.project-meta-row { display: flex; justify-content: space-between; margin-bottom: 10px; color: #637b80; font-size: 9px; }
.project-meta-row strong { color: #0b4e57; }
.project-progress { height: 4px; overflow: hidden; background: rgba(10, 50, 59, 0.1); border-radius: 999px; }
.project-progress i { display: block; width: var(--progress); height: 100%; background: linear-gradient(90deg, #0d7b80, #48cfc5); border-radius: inherit; }
.project-team { display: flex; justify-content: space-between; margin-top: 12px; color: #82979b; font-family: Consolas, monospace; font-size: 8px; letter-spacing: 0.08em; }

.training-path {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 60px;
  margin-top: 100px;
  padding: 58px;
  color: var(--paper);
  background: #072b36;
  border-radius: 28px;
}

.training-intro > span { color: var(--cyan); font-size: 9px; }
.training-intro h3 { margin: 22px 0 0; font-size: 35px; line-height: 1.25; letter-spacing: -0.04em; }
.training-path ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.training-path li { display: grid; grid-template-columns: 40px 150px 1fr; gap: 18px; align-items: center; padding: 17px 0; border-bottom: 1px solid var(--line); }
.training-path li > span { color: var(--cyan); font-family: Consolas, monospace; font-size: 9px; }
.training-path li strong { font-size: 13px; }
.training-path li small { color: #76949a; font-size: 11px; }

.mentor-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-left: 244px; }
.mentor-card { display: grid; grid-template-columns: 120px 1fr; gap: 28px; min-height: 300px; padding: 32px; background: rgba(6, 42, 53, 0.72); border: 1px solid var(--line); border-radius: 22px; }
.mentor-avatar { position: relative; display: grid; place-items: center; width: 110px; height: 150px; overflow: hidden; background: linear-gradient(165deg, rgba(93, 228, 221, 0.28), rgba(5, 38, 48, 0.4)); border: 1px solid rgba(154, 247, 236, 0.23); border-radius: 50px 50px 18px 18px; }
.mentor-avatar::before { content: ""; position: absolute; width: 130px; height: 130px; border: 1px solid rgba(154, 247, 236, 0.15); border-radius: 50%; }
.mentor-avatar::after { content: ""; position: absolute; top: 0; width: 1px; height: 100%; background: rgba(154, 247, 236, 0.17); }
.mentor-avatar span { position: relative; z-index: 2; font-family: serif; font-size: 42px; }
.mentor-avatar i { position: absolute; right: 8px; bottom: 8px; width: 8px; height: 8px; background: var(--cyan); border-radius: 50%; box-shadow: 0 0 12px var(--cyan); }
.mentor-role { display: block; margin: 5px 0 22px; color: var(--cyan); font-size: 8px; }
.mentor-card h3 { margin: 0 0 22px; font-size: 28px; }
.mentor-card p { margin: 0; color: #829fa4; font-size: 12px; line-height: 1.9; }
.mentor-note { margin: 24px 0 0 244px; padding: 15px 20px; color: #66858c; border-left: 2px solid var(--cyan); font-size: 11px; line-height: 1.7; }

.section-life { padding-top: 90px; }
.gallery-grid { display: grid; grid-template-columns: 1.05fr 1.3fr 0.9fr; grid-template-rows: 260px 260px; gap: 14px; }
.gallery-item { position: relative; overflow: hidden; border-radius: 18px; background: #082a35; }
.gallery-item::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 42%, rgba(2, 16, 23, 0.86)); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.82) contrast(1.05); transition: transform 700ms cubic-bezier(.2,.8,.2,1), filter 300ms ease; }
.gallery-item:hover img { transform: scale(1.06); filter: saturate(1.1) contrast(1.02); }
.gallery-caption { position: absolute; z-index: 2; right: 20px; bottom: 18px; left: 20px; display: flex; align-items: flex-end; justify-content: space-between; }
.gallery-caption strong { font-size: 15px; }
.gallery-caption span { color: #a8c4c6; font-family: Consolas, monospace; font-size: 8px; letter-spacing: 0.12em; }
.gallery-tall { grid-row: span 2; }
.gallery-wide { grid-column: span 1; }
.gallery-last { grid-column: span 2; }

.section-faq { background: linear-gradient(180deg, rgba(5, 33, 43, 0.45), rgba(4, 23, 31, 0.7)); border-top: 1px solid rgba(154, 226, 236, 0.08); }
.faq-layout { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 80px; }
.faq-title { position: sticky; top: 120px; align-self: start; }
.faq-title .section-index { margin-bottom: 54px; }
.faq-title h2 { font-size: clamp(44px, 4.2vw, 65px); }
.faq-title > p:last-child { max-width: 340px; margin-top: 28px; color: #77959b; font-size: 13px; line-height: 1.8; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item button { display: grid; grid-template-columns: 54px 1fr 32px; align-items: center; width: 100%; padding: 26px 0; color: var(--paper); background: transparent; border: 0; cursor: pointer; text-align: left; }
.faq-item button > span:first-child { color: var(--cyan); font-family: Consolas, monospace; font-size: 9px; }
.faq-item button strong { font-size: 16px; font-weight: 520; }
.faq-toggle { position: relative; width: 28px; height: 28px; border: 1px solid var(--line); border-radius: 50%; }
.faq-toggle::before,
.faq-toggle::after { content: ""; position: absolute; top: 50%; left: 50%; width: 10px; height: 1px; background: #b6d2d3; transform: translate(-50%, -50%); transition: transform 180ms ease; }
.faq-toggle::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item.open .faq-toggle::after { transform: translate(-50%, -50%) rotate(0); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 280ms ease; }
.faq-answer > div { overflow: hidden; }
.faq-answer p { margin: 0; padding: 0 45px 26px 54px; color: #7f9da2; font-size: 13px; line-height: 1.85; }
.faq-item.open .faq-answer { grid-template-rows: 1fr; }

.final-cta { padding-top: 60px; }
.final-cta-inner { position: relative; display: grid; grid-template-columns: 1fr 0.65fr; gap: 80px; padding: 78px; overflow: hidden; color: #05202a; background: var(--cyan); border-radius: 32px; }
.final-cta-inner::after { content: ""; position: absolute; right: -80px; bottom: -230px; width: 520px; height: 520px; border: 1px solid rgba(5, 32, 42, 0.18); border-radius: 50%; box-shadow: 0 0 0 60px rgba(5, 32, 42, 0.04), 0 0 0 120px rgba(5, 32, 42, 0.03); }
.final-cta-inner > div { position: relative; z-index: 2; }
.final-cta-inner > div:first-child > span { color: #1b6d70; font-size: 9px; }
.final-cta h2 { margin-top: 24px; font-size: clamp(50px, 6vw, 82px); }
.cta-side { align-self: end; }
.cta-side p { margin: 0 0 26px; color: #205e62; font-size: 13px; line-height: 1.8; }
.button-light { width: max-content; min-width: 180px; color: var(--paper); background: #062731; }
.button-light span { background: rgba(255, 255, 255, 0.1); }

.site-footer { padding: 70px 0 34px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.55fr 0.75fr; gap: 60px; }
.footer-brand { margin-bottom: 20px; }
.footer-grid > div:first-child > p { max-width: 390px; color: #57767d; font-size: 11px; line-height: 1.8; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: #829da2; font-size: 11px; }
.footer-links a:hover { color: var(--cyan); }
.footer-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; color: #4d6d74; font-family: Consolas, monospace; font-size: 8px; letter-spacing: 0.11em; text-align: right; }

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.8,.2,1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  :root { --shell: min(100% - 48px, 1000px); }
  .site-header { grid-template-columns: 1fr auto; padding: 0 24px; }
  .site-nav { display: none; }
  .nav-cta { display: none; }
  .menu-button { display: block; justify-self: end; }
  .site-nav.open { position: fixed; inset: 72px 0 0; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 30px 24px; background: rgba(2, 18, 25, 0.98); backdrop-filter: blur(20px); }
  .site-nav.open a { padding: 20px 4px; border-bottom: 1px solid var(--line); font-size: 22px; }
  .hero-content { grid-template-columns: 0.92fr 1.08fr; gap: 0; }
  .hero h1 { font-size: clamp(62px, 9vw, 92px); }
  .about-layout,
  .project-grid,
  .mentor-grid { margin-left: 0; }
  .project-toolbar,
  .mentor-note { margin-left: 0; }
  .section-heading { grid-template-columns: 150px 1fr; }
  .org-chart { margin-inline: auto; }
}

@media (max-width: 820px) {
  :root { --shell: calc(100vw - 36px); --header-height: 76px; }
  .site-header { height: 76px; padding: 0 18px; }
  .brand-copy strong { font-size: 13px; }
  .brand-copy small { font-size: 7px; }
  .brand-mark { width: 40px; height: 40px; }
  .hero { height: auto; min-height: 980px; }
  .hero-content { grid-template-columns: 1fr; align-content: start; padding-top: 130px; }
  .hero-copy { padding-top: 0; }
  .hero h1 { font-size: clamp(58px, 18vw, 90px); }
  .hero-copy > p { font-size: 15px; }
  .hero-visual { min-height: 380px; height: 400px; margin-top: 25px; }
  .sonar-field { left: 0; width: 100%; top: 44%; height: 56%; }
  .submersible { width: min(420px, 92%); transform: translate(-50%, -50%) scale(0.82); }
  @keyframes vehicle-float { 50% { transform: translate(-50%, calc(-50% - 10px)) scale(0.82) rotate(1deg); } }
  .hud-top { right: 0; }
  .hud-depth { right: 0; bottom: 12%; }
  .hero-bottom { bottom: 18px; }
  .telemetry { display: none; }
  .section { padding: 90px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; margin-bottom: 46px; }
  .section h2 { font-size: clamp(39px, 11.5vw, 60px); }
  .about-layout { grid-template-columns: 1fr; gap: 45px; }
  .about-copy > .lead { font-size: 19px; }
  .org-branches { grid-template-columns: 1fr; margin-top: 50px; }
  .org-branches::before { top: -25px; right: 50%; left: 50%; height: 25px; border-right: 0; border-left: 1px solid var(--line-strong); }
  .org-branches::after { display: none; }
  .direction-grid,
  .project-grid,
  .mentor-grid { grid-template-columns: 1fr; }
  .direction-card { min-height: 360px; }
  .direction-card p { max-width: 86%; }
  .cross-lab { grid-template-columns: 1fr auto; gap: 12px; }
  .cross-label { grid-column: 1 / -1; }
  .project-toolbar { margin-top: 0; }
  .training-path { grid-template-columns: 1fr; gap: 40px; padding: 35px 24px; }
  .training-path li { grid-template-columns: 32px 1fr; }
  .training-path li small { grid-column: 2; }
  .mentor-card { grid-template-columns: 92px 1fr; padding: 24px; }
  .mentor-avatar { width: 84px; height: 120px; }
  .mentor-note { margin-left: 0; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(3, 220px); }
  .gallery-tall { grid-row: span 1; }
  .gallery-last { grid-column: span 2; }
  .faq-layout { grid-template-columns: 1fr; gap: 44px; }
  .faq-title { position: static; }
  .faq-title .section-index { margin-bottom: 30px; }
  .final-cta-inner { grid-template-columns: 1fr; gap: 45px; padding: 48px 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-meta { grid-column: 1 / -1; align-items: flex-start; text-align: left; }
}

@media (max-width: 520px) {
  .brand-copy small { display: none; }
  .hero { min-height: 940px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .hero-note { flex-wrap: wrap; line-height: 1.6; }
  .hero-visual { margin-top: 12px; }
  .submersible { transform: translate(-50%, -50%) scale(0.68); }
  @keyframes vehicle-float { 50% { transform: translate(-50%, calc(-50% - 8px)) scale(0.68) rotate(1deg); } }
  .hud { transform: scale(0.86); }
  .hud-top { transform-origin: top right; }
  .hud-link { left: 0; }
  .principles article { grid-template-columns: 32px 1fr; }
  .principles small { grid-column: 2; }
  .stats-panel { grid-template-columns: 1fr; }
  .stat-card { min-height: 145px; border-right: 0; border-bottom: 1px solid var(--line) !important; }
  .stat-card:last-child { border-bottom: 0 !important; }
  .org-presidium span { line-height: 1.7; }
  .org-committee { padding: 22px 18px; }
  .direction-card { padding: 23px; }
  .direction-card p { max-width: 100%; }
  .direction-tags { right: 22px; left: 22px; }
  .cross-lab { padding: 24px; }
  .project-card { min-height: 365px; }
  .mentor-card { grid-template-columns: 1fr; }
  .mentor-avatar { width: 100%; height: 170px; border-radius: 18px; }
  .gallery-grid { display: flex; flex-direction: column; }
  .gallery-item { height: 250px; }
  .faq-item button { grid-template-columns: 38px 1fr 30px; }
  .faq-answer p { padding-left: 38px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-meta { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* 2026.08 light-ocean revision: brighter editorial surfaces + real ROV hero */
body {
  color: #0a303a;
  background: #edf8f7;
}

.site-header.scrolled {
  background: rgba(238, 248, 247, 0.9);
  border-bottom-color: rgba(8, 57, 67, 0.12);
  box-shadow: 0 10px 34px rgba(4, 45, 55, 0.07);
}

.site-header.scrolled .brand-copy strong,
.site-header.scrolled .site-nav a {
  color: #133d46;
}

.site-header.scrolled .brand-copy small {
  color: #66888e;
}

.site-header.scrolled .brand-mark {
  color: #0b777a;
  background: rgba(18, 126, 130, 0.08);
  border-color: rgba(18, 126, 130, 0.28);
}

.site-header.scrolled .menu-button {
  border-color: rgba(8, 57, 67, 0.18);
}

.site-header.scrolled .menu-button span:not(.sr-only) {
  background: #153f48;
}

.hero {
  color: #efffff;
  background:
    linear-gradient(90deg, rgba(0, 25, 36, 0.88) 0%, rgba(0, 37, 50, 0.67) 36%, rgba(0, 49, 64, 0.24) 66%, rgba(0, 23, 34, 0.08) 100%),
    linear-gradient(180deg, rgba(6, 87, 100, 0.02), rgba(0, 21, 31, 0.24)),
    url("./assets/hero/deep-discoverer.jpg") center center / cover no-repeat;
}

#ocean-canvas {
  opacity: 0.46;
}

.hero-grid {
  opacity: 0.48;
}

.sonar-field {
  opacity: 0.36;
}

.hero h1 span {
  color: #f3ffff;
  text-shadow: 0 8px 30px rgba(0, 27, 38, 0.22);
}

.hero h1 em {
  -webkit-text-stroke-color: rgba(179, 255, 247, 0.92);
}

.hero-copy > p {
  color: #cae1e2;
  text-shadow: 0 2px 18px rgba(0, 20, 29, 0.45);
}

.hero .eyebrow,
.hero .hero-note,
.hero .coordinates,
.hero-bottom {
  color: #b6d1d3;
}

.hero .telemetry b {
  color: #e2f8f7;
}

.vehicle-scene {
  display: none;
}

.rov-spec-card {
  position: absolute;
  right: 1%;
  bottom: 14%;
  width: min(390px, 76%);
  padding: 25px;
  background: rgba(226, 250, 248, 0.83);
  border: 1px solid rgba(240, 255, 253, 0.72);
  border-radius: 22px;
  box-shadow: 0 26px 70px rgba(0, 25, 38, 0.24);
  color: #082f39;
  backdrop-filter: blur(18px);
}

.rov-spec-card > span {
  color: #34777e;
  font-family: Consolas, monospace;
  font-size: 8px;
  letter-spacing: 0.14em;
}

.rov-spec-card h3 {
  margin: 22px 0 27px;
  font-size: clamp(34px, 4.4vw, 62px);
  line-height: 0.88;
  letter-spacing: -0.065em;
}

.rov-spec-card > div {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 13px;
  padding-top: 17px;
  border-top: 1px solid rgba(8, 55, 65, 0.16);
}

.rov-spec-card p {
  margin: 0;
}

.rov-spec-card small,
.rov-spec-card strong {
  display: block;
}

.rov-spec-card small {
  min-height: 23px;
  color: #66898e;
  font-family: Consolas, monospace;
  font-size: 7px;
  letter-spacing: 0.08em;
}

.rov-spec-card strong {
  margin-top: 7px;
  font-size: 12px;
}

.hero-photo-credit {
  position: absolute;
  right: 1%;
  bottom: 5%;
  color: rgba(225, 247, 246, 0.68);
  font-size: 8px;
  letter-spacing: 0.04em;
}

.hero-photo-credit a {
  border-bottom: 1px solid rgba(225, 247, 246, 0.42);
}

.ticker {
  color: #07353f;
  background: #70e4dc;
  border-color: rgba(7, 53, 63, 0.14);
}

.ticker-track i {
  background: #0b7780;
}

.section-about {
  background: #edf8f7;
}

.section-organization {
  color: #0a303a;
  background:
    linear-gradient(180deg, rgba(214, 239, 240, 0.98), rgba(225, 244, 243, 0.98)),
    repeating-linear-gradient(90deg, transparent 0, transparent calc(20% - 1px), rgba(8, 62, 71, 0.05) 20%);
  border-color: rgba(8, 62, 71, 0.08);
}

.section-directions {
  background: #f8fcfb;
}

.section-mentors {
  background: #dcedee;
}

.section-life {
  background: #f5fbfa;
}

.section-faq {
  color: #0a303a;
  background: #d8ecee;
  border-color: rgba(8, 62, 71, 0.08);
}

.section-about .section-index,
.section-organization .section-index,
.section-directions .section-index,
.section-mentors .section-index,
.section-life .section-index,
.section-faq .section-index {
  color: #66888e;
}

.section-about .section-kicker,
.section-organization .section-kicker,
.section-directions .section-kicker,
.section-mentors .section-kicker,
.section-life .section-kicker,
.section-faq .section-kicker {
  color: #0c8588;
}

.section-about h2 em,
.section-organization h2 em,
.section-directions h2 em,
.section-mentors h2 em,
.section-life h2 em {
  color: #719097;
}

.about-copy > .lead {
  color: #123d46;
}

.about-copy > p,
.principles small {
  color: #607e84;
}

.principles,
.principles article {
  border-color: rgba(8, 62, 71, 0.13);
}

.principles span {
  color: #0b8588;
}

.stats-panel {
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(8, 62, 71, 0.12);
  box-shadow: 0 30px 80px rgba(14, 82, 90, 0.12);
}

.stat-card {
  border-color: rgba(8, 62, 71, 0.11);
}

.stat-code {
  color: #729096;
}

.stat-value {
  color: #087c80;
}

.stat-label {
  color: #58777d;
}

.org-node {
  color: #0c343d;
  background: rgba(255, 255, 255, 0.86);
  border-color: rgba(12, 117, 122, 0.26);
  box-shadow: 0 16px 44px rgba(24, 97, 104, 0.1);
}

.org-node span,
.committee-title p,
.org-footnote {
  color: #607f85;
}

.org-presidium {
  color: #efffff;
  background: linear-gradient(135deg, #158f91, #0c6872);
}

.org-presidium span {
  color: #c8eeee;
}

.org-line.vertical,
.org-branches::after {
  background: rgba(12, 117, 122, 0.3);
}

.org-branches::before {
  border-color: rgba(12, 117, 122, 0.3);
}

.org-committee {
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(8, 62, 71, 0.12);
  box-shadow: 0 20px 55px rgba(24, 97, 104, 0.08);
}

.committee-title > span {
  color: #538086;
}

.org-groups span {
  color: #315c64;
  background: rgba(8, 120, 126, 0.045);
  border-color: rgba(8, 62, 71, 0.1);
}

.direction-card {
  color: #0a303a;
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(8, 62, 71, 0.12);
  box-shadow: 0 22px 60px rgba(15, 79, 86, 0.08);
}

.direction-number,
.direction-en {
  color: #6b898f;
}

.direction-card p {
  color: #5e7b81;
}

.direction-tags span {
  color: #446b71;
  background: rgba(7, 97, 103, 0.045);
  border-color: rgba(8, 62, 71, 0.11);
}

.cross-lab {
  color: #0a303a;
  background: #cdeeea;
  border-color: rgba(10, 126, 128, 0.22);
}

.cross-lab p {
  color: #547b80;
}

.section-projects {
  background: #edf3f1;
}

.mentor-card {
  color: #0a303a;
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(8, 62, 71, 0.11);
  box-shadow: 0 22px 60px rgba(15, 79, 86, 0.08);
}

.mentor-avatar {
  background: linear-gradient(165deg, rgba(57, 203, 196, 0.35), rgba(218, 242, 240, 0.72));
  border-color: rgba(13, 126, 130, 0.2);
}

.mentor-avatar::before,
.mentor-avatar::after {
  border-color: rgba(13, 126, 130, 0.13);
}

.mentor-card p,
.mentor-note {
  color: #607f85;
}

.mentor-role {
  color: #0a8588;
}

.faq-list,
.faq-item {
  border-color: rgba(8, 62, 71, 0.14);
}

.faq-item button {
  color: #123c45;
}

.faq-toggle {
  border-color: rgba(8, 62, 71, 0.18);
}

.faq-toggle::before,
.faq-toggle::after {
  background: #285b63;
}

.faq-answer p,
.faq-title > p:last-child {
  color: #5f7e84;
}

.site-footer {
  color: #0a303a;
  background: #eaf6f5;
}

.footer-grid > div:first-child > p,
.footer-meta {
  color: #66858b;
}

.footer-links a {
  color: #496d73;
}

@media (max-width: 1100px) {
  .site-nav.open {
    color: #123d46;
    background: rgba(238, 248, 247, 0.98);
  }

  .site-nav.open a {
    color: #123d46;
    border-color: rgba(8, 62, 71, 0.12);
  }
}

@media (max-width: 820px) {
  .hero {
    background-position: 58% center;
  }

  .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 25, 36, 0.78) 0%, rgba(0, 37, 50, 0.48) 48%, rgba(0, 28, 40, 0.18) 100%);
  }

  .rov-spec-card {
    right: 0;
    bottom: 15%;
    width: min(360px, 92%);
    padding: 20px;
  }

  .hero-photo-credit {
    right: 0;
    bottom: 5%;
  }
}

@media (max-width: 520px) {
  .rov-spec-card {
    bottom: 18%;
  }

  .rov-spec-card h3 {
    margin: 16px 0 20px;
    font-size: 38px;
  }

  .rov-spec-card > div {
    gap: 8px;
  }
}