:root {
  --bg: #050507;
  --ink: #f5f5f7;
  --muted: #a6a6ad;
  --line: rgba(255, 255, 255, 0.12);
  --panel: rgba(255, 255, 255, 0.07);
  --blue: #0a84ff;
  --cyan: #28d8ff;
  --green: #c91430;
  --navy: #061125;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 50% -10%, rgba(40, 216, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #050507 0%, #0a0b0f 42%, #050507 100%);
  color: var(--ink);
  font-family: "Inter", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 92px;
  padding: 0 42px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(0, 0, 0, 0.58);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(28px) saturate(140%);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
}

.brand-logo {
  display: block;
  width: 260px;
  height: 80px;
  object-fit: contain;
  object-position: center;
  border-radius: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 38px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
}

.nav-links a,
.nav-cta,
.text-link {
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.nav-links a:hover,
.text-link:hover {
  color: #fff;
}

.nav-cta {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 17px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: #09090b;
  font-size: 15px;
  font-weight: 800;
}


.instagram-icon {
  width: 21px;
  height: 21px;
  border-radius: 6px;
  background:
    radial-gradient(circle at 68% 28%, #fff 0 4%, transparent 5%),
    radial-gradient(circle at 50% 50%, transparent 0 27%, #fff 28% 36%, transparent 37%),
    linear-gradient(135deg, #ffd600 0%, #ff7a00 28%, #ff0069 54%, #d300c5 76%, #7638fa 100%);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.9);
}

.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: 128px clamp(24px, 6vw, 96px) 72px;
  color: #fff;
  isolation: isolate;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.82;
  filter: saturate(0.82) contrast(1.08) brightness(0.72);
  transform: scale(1.08);
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero-shade {
  z-index: -1;
  background:
    radial-gradient(circle at 68% 28%, rgba(255, 255, 255, 0.18), transparent 18%),
    linear-gradient(90deg, rgba(0, 0, 0, 0.96), rgba(0, 0, 0, 0.58) 42%, rgba(0, 0, 0, 0.26)),
    linear-gradient(0deg, #050507 0%, rgba(5, 5, 7, 0.8) 12%, transparent 54%);
}

.hero-content {
  width: min(980px, 100%);
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 1040px;
  font-size: clamp(54px, 7.2vw, 104px);
  line-height: 1.02;
  letter-spacing: 0;
  font-weight: 900;
}

.hero-copy {
  margin: 26px 0 0;
  max-width: 640px;
  color: rgba(255, 255, 255, 0.7);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.55;
  word-break: keep-all;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 800;
}

.button.primary {
  background: var(--blue);
  color: #fff;
}

.button.secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.button:hover,
.nav-cta:hover {
  transform: translateY(-1px);
}

.hero-spec {
  position: absolute;
  right: clamp(24px, 6vw, 96px);
  bottom: 72px;
  display: grid;
  gap: 6px;
  min-width: 230px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.05));
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(22px);
}

.hero-spec span {
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.hero-spec strong {
  font-size: 17px;
}

.section-pad {
  padding: 118px clamp(24px, 6vw, 96px);
}

.intro {
  text-align: center;
}

.intro h2,
.feature-copy h2,
.section-head h2,
.join h2 {
  margin: 0 auto;
  max-width: 920px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.04;
  letter-spacing: 0;
  font-weight: 900;
}

.intro > p,
.feature-copy p,
.join-copy p {
  max-width: 760px;
  margin: 24px auto 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.7;
  word-break: keep-all;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  max-width: 980px;
  margin: 56px auto 0;
}

.metrics article {
  min-height: 158px;
  padding: 28px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.075);
  border: 1px solid var(--line);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.24);
}

.metrics strong {
  display: block;
  font-size: 54px;
  line-height: 1;
}

.metrics span {
  display: block;
  margin-top: 14px;
  color: var(--muted);
  font-weight: 700;
}

.club-profile {
  display: grid;
  grid-template-columns: 1.35fr 0.75fr 0.75fr 0.9fr;
  gap: 10px;
  max-width: 1120px;
  margin: 14px auto 0;
}

.club-profile div {
  display: grid;
  gap: 8px;
  min-height: 96px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.065);
}

.club-profile span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.club-profile strong {
  font-size: 18px;
  line-height: 1.45;
  word-break: keep-all;
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(320px, 1.15fr);
  gap: 56px;
  align-items: center;
  padding: 120px clamp(24px, 6vw, 96px);
  background:
    radial-gradient(circle at 12% 18%, rgba(40, 216, 255, 0.12), transparent 28%),
    #050507;
  color: #fff;
}

.feature-copy h2 {
  margin-left: 0;
}

.feature-copy p {
  margin-left: 0;
  color: rgba(255, 255, 255, 0.62);
}

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

.feature-grid article {
  min-height: 230px;
  padding: 26px;
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.03)),
    #15171c;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-grid span {
  color: var(--green);
  font-weight: 800;
}

.feature-grid h3 {
  margin: 54px 0 12px;
  font-size: 26px;
}

.feature-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
  line-height: 1.6;
  word-break: keep-all;
}

.workflow {
  background: #0a0b0f;
}

.section-head.compact {
  display: block;
  margin-bottom: 24px;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.workflow-grid article {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035));
}

.workflow-grid span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.workflow-grid span b {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
  font-size: 17px;
  font-weight: 400;
}

.workflow-grid h3 {
  margin: auto 0 14px;
  font-size: 28px;
  line-height: 1.18;
}

.workflow-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.72;
  word-break: keep-all;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 32px;
}

.section-head h2 {
  margin-left: 0;
  max-width: 820px;
}

.text-link {
  flex: 0 0 auto;
  color: var(--blue);
  font-weight: 800;
}

.project-row {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 0.85fr;
  gap: 14px;
}

.project-card {
  display: flex;
  flex-direction: column;
  justify-content: end;
  min-height: 440px;
  padding: 30px;
  border-radius: var(--radius);
  overflow: hidden;
}

.project-card.dark {
  color: #fff;
  background:
    radial-gradient(circle at 70% 20%, rgba(0, 167, 200, 0.55), transparent 34%),
    linear-gradient(145deg, #151515, #050506);
}

.project-card.light {
  background:
    radial-gradient(circle at 70% 25%, rgba(108, 195, 106, 0.45), transparent 34%),
    #fff;
}

.project-card.silver {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(194, 201, 207, 0.8)),
    #d9dee3;
}

.project-card p {
  margin: 0 0 12px;
  color: var(--cyan);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 13px;
}

.project-card h3 {
  margin: 0;
  max-width: 470px;
  font-size: clamp(28px, 3vw, 44px);
  line-height: 1.08;
  letter-spacing: 0;
}

.project-card span {
  max-width: 470px;
  margin-top: 18px;
  color: color-mix(in srgb, currentColor 62%, transparent);
  line-height: 1.65;
  word-break: keep-all;
}

.history-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(360px, 1.08fr);
  gap: 14px;
  align-items: stretch;
}

.logo-showcase {
  min-height: 560px;
  display: grid;
  place-items: center;
  padding: 28px;
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 50% 40%, rgba(22, 185, 223, 0.14), transparent 34%),
    var(--navy);
  overflow: hidden;
}

.logo-showcase img {
  width: min(620px, 100%);
  border-radius: 4px;
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.28);
}

.history-list {
  counter-reset: history;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.history-list li {
  counter-increment: history;
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 18px;
  align-items: start;
  min-height: 58px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #07080b;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.045);
}

.history-list time {
  color: var(--green);
  font-weight: 900;
  white-space: nowrap;
}

.history-list span {
  color: rgba(255, 255, 255, 0.82);
  font-weight: 700;
  line-height: 1.55;
  word-break: keep-all;
}

.quote-band {
  min-height: 430px;
  display: grid;
  place-items: center;
  padding: 80px 24px;
  color: #fff;
  text-align: center;
  background:
    linear-gradient(rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.72)),
    url("./assets/suav-quote-bg.png") center / cover fixed;
}

.quote-band p {
  width: min(940px, 100%);
  margin: 0;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: 0;
  word-break: keep-all;
}

.join {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(320px, 460px);
  gap: 48px;
  align-items: start;
  background: #07080b;
}

.join-copy h2 {
  margin-left: 0;
}

.join-copy p {
  margin-left: 0;
}

.join-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.join-actions span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.07);
  font-size: 14px;
  font-weight: 800;
}

.join-panel {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
}

.join-panel dl {
  margin: 0;
}

.join-panel div {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.join-panel div:first-child {
  padding-top: 0;
}

.join-panel dt {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.join-panel dd {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.5;
  word-break: keep-all;
}

.wide {
  width: 100%;
  margin-top: 24px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 32px clamp(24px, 6vw, 96px);
  color: rgba(255, 255, 255, 0.62);
  background: #050507;
}

.site-footer strong {
  color: #fff;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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


@keyframes heroDrift {
  from {
    transform: scale(1.08) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.14) translate3d(-18px, -10px, 0);
  }
}

.hero-content > * {
  opacity: 0;
  transform: translateY(28px);
  animation: heroRise 900ms cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.hero-content > *:nth-child(2) {
  animation-delay: 120ms;
}

.hero-content > *:nth-child(3) {
  animation-delay: 240ms;
}

.hero-content > *:nth-child(4) {
  animation-delay: 360ms;
}

@keyframes heroRise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-header {
  animation: headerDrop 720ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

@keyframes headerDrop {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
    padding: 0 18px;
  }

  .nav-links {
    display: none;
  }

  .brand-logo {
    width: 190px;
    height: 58px;
  }

  .nav-cta span:last-child {
    display: none;
  }

  .hero {
    min-height: 840px;
    padding: 108px 22px 42px;
  }

  .hero-spec {
    position: static;
    margin-top: 36px;
    width: min(100%, 320px);
  }

  .metrics,
  .club-profile,
  .feature-band,
  .project-row,
  .workflow-grid,
  .history-layout,
  .join {
    grid-template-columns: 1fr;
  }

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

  .section-head {
    display: block;
  }

  .text-link {
    display: inline-flex;
    margin-top: 18px;
  }

  .project-card {
    min-height: 340px;
  }

  .logo-showcase {
    min-height: 360px;
  }
}

@media (max-width: 560px) {
  .hero h1 {
    font-size: 46px;
  }

  .section-pad,
  .feature-band {
    padding: 82px 20px;
  }

  .intro h2,
  .feature-copy h2,
  .section-head h2,
  .join h2 {
    font-size: 38px;
  }

  .intro > p,
  .feature-copy p,
  .join-copy p {
    font-size: 17px;
  }

  .workflow-grid p {
    font-size: 16px;
  }

  .metrics article,
  .club-profile div,
  .feature-grid article,
  .workflow-grid article,
  .project-card,
  .history-list li,
  .join-panel {
    padding: 22px;
  }

  .history-list li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .site-footer {
    display: grid;
  }
}