:root {
  --navy: #07131f;
  --navy2: #0b1e2e;
  --ink: #eaf7fb;
  --muted: #86a4b3;
  --cyan: #00d8ef;
  --mint: #68f1ce;
  --yellow: #ffc83d;
  --orange: #ff7452;
  --red: #ff455f;
  --line: rgba(162, 215, 229, .16);
  --panel: #0c2131;
  --sans: "Noto Sans JP", sans-serif;
  --cond: "Barlow Condensed", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--navy);
  color: var(--ink);
  font-family: var(--sans);
  overflow-x: hidden;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  opacity: .045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.75'/%3E%3C/svg%3E");
}

.site-header {
  height: 88px;
  padding: 0 clamp(24px, 5vw, 76px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: white;
  text-decoration: none;
}

.brand>span:last-child {
  display: flex;
  flex-direction: column;
}

.brand strong {
  font: 800 20px/1 var(--cond);
  letter-spacing: .16em;
}

.brand small {
  font-size: 10px;
  letter-spacing: .22em;
  color: #8fb1c0;
  margin-top: 6px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-content: center;
  position: relative;
}

.brand-mark:before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 50%;
}

.brand-mark i {
  display: block;
  width: 17px;
  height: 7px;
  background: var(--cyan);
  transform: skew(-25deg);
  margin: 2px;
}

.brand-mark i:last-child {
  margin-left: 8px;
  background: #3b81ff;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  margin-right: 38px;
  color: #6f93a5;
  font: 600 11px var(--cond);
  letter-spacing: .17em;
}

.pulse {
  width: 7px;
  height: 7px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(104, 241, 206, .09);
  animation: pulse 2s infinite;
}

.menu-button {
  display: none;
  background: transparent;
  border: 0;
  width: 42px;
  height: 42px;
}

.menu-button span {
  display: block;
  height: 2px;
  background: #fff;
  margin: 7px;
}

.hero {
  min-height: 780px;
  position: relative;
  display: grid;
  grid-template-columns: 55% 45%;
  align-items: center;
  padding: 130px clamp(24px, 8vw, 130px) 70px;
  overflow: hidden;
  background: radial-gradient(circle at 75% 45%, rgba(0, 216, 239, .09), transparent 31%), linear-gradient(135deg, #07131f 0%, #081a28 100%);
}

.hero:after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: .5;
}

.eyebrow {
  font: 700 12px var(--cond);
  letter-spacing: .22em;
  color: #7898a8;
}

.eyebrow span {
  color: var(--cyan);
  margin-right: 14px;
}

.hero h1 {
  font-size: clamp(56px, 7vw, 112px);
  line-height: 1.04;
  letter-spacing: -.065em;
  margin: 25px 0 30px;
  position: relative;
  z-index: 1;
}

.hero h1 em {
  font-style: normal;
  color: transparent;
  -webkit-text-stroke: 1px #87abb9;
  text-shadow: 0 0 35px rgba(0, 216, 239, .13);
}

.lead {
  color: #9db7c3;
  max-width: 570px;
  line-height: 2;
  font-size: 15px;
}

.primary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 245px;
  margin-top: 32px;
  padding: 18px 20px;
  color: #04121b;
  background: var(--cyan);
  text-decoration: none;
  font-weight: 800;
  font-size: 13px;
  transition: .25s;
}

.primary-cta:hover {
  background: white;
  transform: translateY(-3px);
}

.primary-cta span {
  font-size: 18px;
}

.hero-visual {
  height: min(42vw, 560px);
  aspect-ratio: 1;
  justify-self: center;
  position: relative;
  display: grid;
  place-items: center;
}

.radar {
  width: 72%;
  height: 72%;
  border: 1px solid rgba(0, 216, 239, .3);
  border-radius: 50%;
  position: relative;
  background: repeating-radial-gradient(circle, transparent 0 55px, rgba(0, 216, 239, .1) 56px 57px);
}

.radar:before, .radar:after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  height: 100%;
  width: 1px;
  background: rgba(0, 216, 239, .18);
}

.radar:after {
  transform: rotate(90deg);
}

.radar span {
  position: absolute;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 18px var(--cyan);
}

.radar span:nth-child(1) {
  top: 25%;
  left: 25%;
}

.radar span:nth-child(2) {
  top: 53%;
  right: 18%;
}

.radar span:nth-child(3) {
  bottom: 20%;
  left: 40%;
}

.radar i {
  position: absolute;
  width: 50%;
  height: 50%;
  left: 50%;
  top: 0;
  transform-origin: 0 100%;
  background: conic-gradient(from 90deg, rgba(0, 216, 239, .22), transparent 35deg);
  animation: scan 5s linear infinite;
}

.hero-visual>p {
  position: absolute;
  right: 0;
  bottom: 12%;
  font: 600 11px/1.6 var(--cond);
  letter-spacing: .14em;
  color: #517180;
}

.hero-visual>p b {
  color: var(--cyan);
}

.rain-lines {
  position: absolute;
  inset: -20%;
  background: repeating-linear-gradient(112deg, transparent 0 28px, rgba(87, 178, 227, .06) 29px 31px);
  transform: skewX(-8deg);
}

.scroll-cue {
  position: absolute;
  bottom: 45px;
  left: 5.2vw;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #55717e;
  font: 700 9px var(--cond);
  letter-spacing: .22em;
}

.scroll-cue span {
  display: block;
  width: 70px;
  height: 1px;
  background: #365466;
}

.weather, .flow {
  padding: 110px clamp(24px, 8vw, 130px);
}

.section-heading h2 {
  font-size: clamp(36px, 4vw, 58px);
  margin: 12px 0 18px;
  letter-spacing: -.04em;
}

.section-heading>p:last-child {
  color: var(--muted);
  font-size: 14px;
}

.weather {
  background: #091925;
}

.weather-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 45px;
}

.weather-card {
  position: relative;
  min-height: 145px;
  padding: 28px;
  display: flex;
  align-items: center;
  gap: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .015));
  color: white;
  text-decoration: none;
  overflow: hidden;
  transition: .3s;
}

.weather-card:before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: .3s;
}

.weather-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 216, 239, .4);
}

.weather-card:hover:before {
  transform: scaleX(1);
}

.weather-card>span:nth-child(2) {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.weather-card small {
  color: #63889a;
  font: 600 10px var(--cond);
  letter-spacing: .18em;
}

.weather-card strong {
  font-size: 18px;
}

.weather-card>b {
  font-size: 18px;
  margin-left: auto;
  color: #6b8b9a;
}

.weather-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(0, 216, 239, .4);
  border-radius: 50%;
  font: 500 25px var(--cond);
  color: var(--cyan);
}

.warning .weather-icon {
  border-color: rgba(255, 200, 61, .45);
  color: var(--yellow);
}

.warning:before {
  background: var(--yellow);
}

.radar-card .weather-icon {
  border-color: rgba(104, 241, 206, .4);
  color: var(--mint);
}

.radar-card:before {
  background: var(--mint);
}

.flow {
  background: var(--navy);
}

.flow-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.level-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.level-tabs button {
  border: 1px solid var(--line);
  background: transparent;
  color: #7794a2;
  padding: 11px 15px;
  font: 700 11px var(--cond);
  letter-spacing: .08em;
  cursor: pointer;
  transition: .2s;
}

.level-tabs button:hover, .level-tabs button.active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04131d;
}

.flow-layout {
  display: grid;
  grid-template-columns: 75px 1fr;
  gap: 25px;
  margin-top: 60px;
}

.flow-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #537383;
  font: 700 9px var(--cond);
  letter-spacing: .15em;
  padding: 20px 0;
}

.flow-rail i {
  width: 1px;
  flex: 1;
  background: linear-gradient(var(--cyan), var(--red));
  margin: 16px 0;
  position: relative;
}

.flow-rail i:before {
  content: "";
  position: absolute;
  top: 0;
  left: -3px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  border-radius: 50%;
}

.flow-rail b {
  color: var(--red);
  font-weight: 700;
}

.level-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.level-card {
  --accent: var(--cyan);
  position: relative;
  padding: 28px;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .012));
  min-height: 238px;
  display: flex;
  flex-direction: column;
  transition: .3s;
  overflow: hidden;
}

.level-card:before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
}

.level-card:after {
  content: attr(data-num);
  position: absolute;
  right: 15px;
  top: -28px;
  font: 800 116px var(--cond);
  color: rgba(255, 255, 255, .025);
  pointer-events: none;
}

.level-card[data-group="1"] {
  --accent: var(--mint);
}

.level-card[data-group="2"] {
  --accent: var(--yellow);
}

.level-card[data-group="3"] {
  --accent: var(--red);
}

.level-card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  transform: translateY(-3px);
  background: linear-gradient(120deg, rgba(255, 255, 255, .065), rgba(255, 255, 255, .018));
}

.level-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.level-name {
  font: 800 14px var(--cond);
  letter-spacing: .13em;
  color: var(--accent);
}

.level-flow {
  font: 700 10px var(--cond);
  letter-spacing: .12em;
  color: #567586;
}

.level-card h3 {
  font-size: 28px;
  margin: 14px 0 8px;
  letter-spacing: -.025em;
}

.level-card h3 b {
  font: 700 16px var(--cond);
  color: #7593a2;
}

.level-card>p {
  color: #91acb8;
  font-size: 13px;
  margin: 0;
  line-height: 1.7;
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: auto;
  padding-top: 24px;
}

.card-actions a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 13px;
  border: 1px solid var(--line);
  color: #c5d8df;
  text-decoration: none;
  font-size: 11px;
  font-weight: 700;
  transition: .2s;
}

.card-actions a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #07131f;
}

.card-actions a:first-child {
  background: rgba(255, 255, 255, .045);
}

.level-card.hidden {
  display: none;
}

.notice {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 35px;
  padding: 75px clamp(24px, 8vw, 130px);
  background: #0a2231;
  border-top: 1px solid var(--line);
}

.notice-mark {
  width: 70px;
  height: 70px;
  border: 1px solid var(--yellow);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--yellow);
  font: 700 30px var(--cond);
}

.notice h2 {
  font-size: 30px;
  margin: 5px 0 10px;
}

.notice p {
  color: #7898a7;
  font-size: 13px;
  margin: 0;
}

.notice a {
  color: var(--cyan);
  font: 700 11px var(--cond);
  letter-spacing: .1em;
  text-decoration: none;
}

footer {
  padding: 55px clamp(24px, 5vw, 76px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  border-top: 1px solid var(--line);
  color: #476675;
}

footer>p {
  font: 600 10px var(--cond);
  letter-spacing: .18em;
}

footer>small {
  justify-self: end;
  font: 500 9px var(--cond);
  letter-spacing: .12em;
}

.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 45px;
  height: 45px;
  border: 1px solid rgba(0, 216, 239, .4);
  background: rgba(7, 19, 31, .8);
  color: var(--cyan);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: .25s;
  backdrop-filter: blur(10px);
  z-index: 20;
}

.to-top.show {
  opacity: 1;
  pointer-events: auto;
}

@keyframes scan {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  50% {
    box-shadow: 0 0 0 10px rgba(104, 241, 206, 0);
  }
}

@media (max-width:900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 720px;
  }

  .hero-visual {
    position: absolute;
    width: 540px;
    height: 540px;
    right: -240px;
    opacity: .45;
  }

  .hero-copy {
    z-index: 2;
  }

  .weather-grid {
    grid-template-columns: 1fr;
  }

  .weather-card {
    min-height: 110px;
  }

  .flow-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .level-tabs {
    justify-content: flex-start;
  }

  .level-list {
    grid-template-columns: 1fr;
  }

  .flow-layout {
    grid-template-columns: 45px 1fr;
  }

  .notice {
    grid-template-columns: auto 1fr;
  }

  .notice a {
    display: none;
  }

  footer {
    grid-template-columns: 1fr auto;
  }

  footer>p {
    display: none;
  }
}

@media (max-width:600px) {
  .site-header {
    height: 72px;
  }

  .header-status {
    display: none;
  }

  .menu-button {
    display: block;
  }

  .hero {
    min-height: 680px;
    padding-top: 110px;
  }

  .hero-copy {
    min-width: 0;
    max-width: 100%;
  }

  .hero h1 {
    font-size: 46px;
  }

  .lead {
    font-size: 14px;
  }

  .hero-visual {
    right: -330px;
  }

  .weather, .flow {
    padding-top: 80px;
    padding-bottom: 80px;
  }

  .weather-card {
    padding: 22px;
  }

  .weather-icon {
    width: 45px;
    height: 45px;
  }

  .flow-layout {
    grid-template-columns: 1fr;
  }

  .flow-rail {
    display: none;
  }

  .level-tabs {
    overflow: auto;
    flex-wrap: nowrap;
    width: calc(100vw - 48px);
    padding-bottom: 8px;
  }

  .level-tabs button {
    white-space: nowrap;
  }

  .level-card {
    padding: 23px;
    min-height: 250px;
  }

  .level-card h3 {
    font-size: 24px;
  }

  .card-actions {
    flex-direction: column;
  }

  .notice {
    grid-template-columns: 1fr;
    padding-top: 60px;
  }

  .notice-mark {
    width: 52px;
    height: 52px;
  }

  footer {
    grid-template-columns: 1fr;
  }

  footer>small {
    justify-self: start;
    margin-top: 25px;
  }
}

@media (prefers-reduced-motion:reduce) {
  * {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}