:root {
  --yellow: #FBB72C;
  --yellow-soft: #f5d377;
  --yellow-dark: #e9a315;
  --green: #22c55e;
  --bg: #0a0a0a;
  --bg-soft: #121212;
  --bg-alt: #161616;
  --surface: #1a1a1a;
  --border: rgba(255,255,255,.08);
  --border-strong: rgba(255,255,255,.18);
  --text: #f5f5f5;
  --text-dim: rgba(245,245,245,.72);
  --text-faint: rgba(245,245,245,.48);
  --radius: 14px;
  --radius-lg: 22px;
  --max: 1160px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Noto Sans KR", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
code {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: .92em;
  background: rgba(255,255,255,.08);
  color: var(--yellow);
  padding: 1px 7px;
  border-radius: 4px;
  letter-spacing: .01em;
}

::selection { background: var(--yellow); color: #000; }

/* ============ Nav ============ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  transition: padding .2s, background .2s, border-color .2s, backdrop-filter .2s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  padding: 12px 32px;
  background: rgba(10,10,10,.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--border);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-brand img {
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 0 18px rgba(251,183,44,.4));
}
.nav-title {
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 3px;
}
.nav-title-main {
  font-family: "Black Han Sans", "Pretendard", sans-serif;
  font-weight: 400;
  font-size: 20px;
  letter-spacing: .04em;
  color: #fff;
}
.nav-title-sub {
  font-size: 9px;
  font-weight: 700;
  color: var(--text-faint);
  letter-spacing: .22em;
}
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: .02em;
  transition: color .15s;
}
.nav-links a:hover { color: #fff; }
.nav-cta {
  background: var(--yellow);
  color: #0a0a0a !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 800 !important;
  transition: background .15s, transform .08s, box-shadow .2s;
  box-shadow: 0 6px 24px -6px rgba(251,183,44,.5);
}
.nav-cta:hover { background: #fff; color: #0a0a0a !important; }
.nav-cta:active { transform: translateY(1px); }

@media (max-width: 720px) {
  .nav { padding: 14px 18px; }
  .nav.scrolled { padding: 10px 18px; }
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 32px 100px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 20% 18%, rgba(251,183,44,.14), transparent 60%),
    radial-gradient(ellipse 70% 50% at 85% 85%, rgba(251,183,44,.08), transparent 60%),
    linear-gradient(180deg, #0b0b0b 0%, #0a0a0a 60%, #070707 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-bolt {
  position: absolute;
  top: 50%;
  right: -8%;
  transform: translateY(-50%) rotate(14deg);
  font-size: 880px;
  line-height: 1;
  color: var(--yellow);
  opacity: .06;
  font-family: -apple-system, sans-serif;
  user-select: none;
  filter: blur(1px);
}
.hero-inner {
  position: relative;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(255,255,255,.03);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--text-dim);
  margin-bottom: 32px;
}
.hero-eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .45; }
}

.hero-title {
  font-family: "Black Han Sans", "Pretendard", sans-serif;
  font-weight: 400;
  font-size: clamp(48px, 9vw, 112px);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: 0 0 32px;
  color: #fff;
}
.hero-title .line {
  display: block;
}
.hero-title .accent-line {
  color: var(--yellow);
  position: relative;
  display: inline-block;
}
.hero-title .accent-line::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: .1em;
  height: .12em;
  background: var(--yellow);
  opacity: .25;
  border-radius: 2px;
}

.hero-sub {
  font-size: clamp(15px, 1.5vw, 18px);
  color: var(--text-dim);
  margin: 0 0 36px;
  max-width: 560px;
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-faint);
}
.hero-meta .sep { opacity: .4; }
.hero-meta code {
  color: var(--yellow);
}

.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: .3em;
  color: var(--text-faint);
  font-weight: 700;
  animation: bounce 2.2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); opacity: .5; }
  50% { transform: translate(-50%, 6px); opacity: 1; }
}

@media (max-width: 720px) {
  .hero { padding: 120px 20px 80px; }
  .hero-bolt { font-size: 520px; right: -18%; opacity: .05; }
}

/* ============ Buttons ============ */
.btn-primary, .btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  padding: 14px 24px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform .08s, background .15s, color .15s, border-color .15s, box-shadow .2s;
  white-space: nowrap;
  letter-spacing: .01em;
}
.btn-primary {
  background: var(--yellow);
  color: #0a0a0a;
  border: 1px solid var(--yellow);
  box-shadow: 0 10px 30px -10px rgba(251,183,44,.6);
}
.btn-primary:hover { background: #fff; border-color: #fff; }
.btn-primary:active { transform: translateY(1px); }
.btn-primary.big {
  font-size: 17px;
  padding: 17px 32px;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.04); }
.btn-ghost.light { color: #fff; }

/* ============ Sections ============ */
.section {
  padding: 120px 32px;
  position: relative;
}
.section + .section { border-top: 1px solid var(--border); }
.section-alt { background: var(--bg-soft); }
.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}
.section-head {
  margin-bottom: 56px;
}
.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .22em;
  color: var(--yellow);
  background: rgba(251,183,44,.1);
  border: 1px solid rgba(251,183,44,.22);
  padding: 5px 12px;
  border-radius: 6px;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.tag.light { color: var(--yellow); background: rgba(251,183,44,.12); border-color: rgba(251,183,44,.25); }

.section h2 {
  font-family: "Black Han Sans", "Pretendard", sans-serif;
  font-weight: 400;
  font-size: clamp(32px, 4.6vw, 56px);
  margin: 0 0 18px;
  letter-spacing: -.02em;
  line-height: 1.08;
  color: #fff;
}
.section p {
  margin: 0 0 14px;
  color: var(--text-dim);
  max-width: 680px;
  font-size: clamp(14px, 1.3vw, 16px);
  line-height: 1.75;
}
.section-sub { color: var(--text-faint); margin-top: 8px; }

.two-col {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
}
@media (max-width: 860px) {
  .section { padding: 80px 20px; }
  .section-head { margin-bottom: 36px; }
  .two-col { grid-template-columns: 1fr; gap: 28px; }
}

/* ============ About ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
}
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
}
.about-text p {
  font-size: clamp(15px, 1.35vw, 17px);
  color: var(--text-dim);
}

.facts {
  list-style: none;
  margin: 0;
  padding: 4px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.facts li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.facts li:last-child { border-bottom: none; }
.facts .k {
  color: var(--text-faint);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.facts .v { font-weight: 700; color: #fff; text-align: right; }
.facts .v code { color: var(--yellow); }

/* ============ Schedule / Training ============ */
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}
@media (max-width: 720px) { .schedule-grid { grid-template-columns: 1fr; } }

.sched-card {
  position: relative;
  background: linear-gradient(180deg, #161616 0%, #0f0f0f 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px 28px;
  overflow: hidden;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.sched-card:hover {
  border-color: rgba(251,183,44,.45);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -20px rgba(251,183,44,.25);
}
.sched-card::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -20%;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(251,183,44,.35), transparent 65%);
  pointer-events: none;
  opacity: .55;
  transition: opacity .3s;
}
.sched-card:hover::before { opacity: 1; }
.sched-index {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .22em;
  color: var(--text-faint);
  margin-bottom: 18px;
}
.sched-day {
  font-family: "Black Han Sans", sans-serif;
  font-size: 34px;
  line-height: 1;
  color: var(--yellow);
  margin-bottom: 10px;
}
.sched-time {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.sched-time .dash {
  color: var(--text-faint);
  font-weight: 400;
}
.sched-label {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: .04em;
}

.training-place {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 24px;
}
.place-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.place-row:last-child { border-bottom: none; }
.place-k {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .22em;
  color: var(--text-faint);
  text-transform: uppercase;
  flex: 0 0 72px;
}
.place-v {
  color: var(--text);
  font-weight: 600;
}

/* ============ Coach ============ */
.coach-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  position: relative;
  overflow: hidden;
}
.coach-card::before {
  content: "";
  position: absolute;
  top: -40%;
  left: -10%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(251,183,44,.18), transparent 65%);
  pointer-events: none;
}
.coach-card-label {
  position: relative;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .22em;
  color: var(--text-faint);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.coach-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.coach-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.coach-list li:last-child { border-bottom: none; }
.coach-list li strong {
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -.01em;
}
.coach-list li span {
  color: var(--text-faint);
  font-size: 13px;
}

/* ============ CTA section ============ */
.section-cta {
  background:
    radial-gradient(ellipse 70% 80% at 50% 120%, rgba(251,183,44,.25), transparent 60%),
    linear-gradient(180deg, #0a0a0a 0%, #141414 100%);
  padding: 140px 32px;
  text-align: center;
  border-top: 1px solid var(--border);
  overflow: hidden;
  position: relative;
}
.section-cta::before {
  content: "⚡";
  position: absolute;
  font-size: 540px;
  top: -40px;
  left: -60px;
  color: var(--yellow);
  opacity: .04;
  transform: rotate(-12deg);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 { color: #fff; }
.cta-inner p {
  color: var(--text-dim);
  margin: 0 auto 32px;
  font-size: 16px;
}
.cta-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.cta-note {
  font-size: 13px;
  color: var(--text-faint);
}

/* ============ Inquiry form ============ */
.inquiry-form {
  position: relative;
  max-width: 560px;
  margin: 32px auto 0;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 520px) {
  .field-row { grid-template-columns: 1fr; }
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.field-label .req { color: var(--yellow); margin-left: 3px; }
.field-label .hint {
  color: var(--text-faint);
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: none;
  font-size: 11px;
}
.inquiry-form input,
.inquiry-form textarea {
  font: inherit;
  font-size: 15px;
  color: #fff;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 13px 14px;
  outline: none;
  transition: border-color .15s, background .15s, box-shadow .15s;
  resize: vertical;
  font-family: inherit;
}
.inquiry-form textarea { min-height: 84px; }
.inquiry-form input::placeholder,
.inquiry-form textarea::placeholder {
  color: var(--text-faint);
}
.inquiry-form input:focus,
.inquiry-form textarea:focus {
  border-color: var(--yellow);
  background: rgba(255,255,255,.06);
  box-shadow: 0 0 0 3px rgba(251,183,44,.15);
}
.form-err {
  min-height: 18px;
  font-size: 13px;
  color: #ff8480;
  margin-top: -4px;
}
.form-submit {
  width: 100%;
  margin-top: 4px;
}
.form-ok {
  margin-top: 14px;
  padding: 12px 14px;
  background: rgba(34,197,94,.1);
  border: 1px solid rgba(34,197,94,.28);
  border-radius: 10px;
  color: #86efac;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
}

/* ============ Footer ============ */
.foot {
  background: #050505;
  padding: 36px 32px;
  border-top: 1px solid var(--border);
}
.foot-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.foot-brand { display: flex; align-items: center; gap: 14px; }
.foot-brand img {
  width: 36px;
  height: 36px;
  filter: drop-shadow(0 0 12px rgba(251,183,44,.3));
}
.foot-name {
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
}
.foot-sub {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 2px;
}
.foot-links {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--text-faint);
  font-weight: 600;
}
.foot-links a { transition: color .15s; }
.foot-links a:hover { color: var(--yellow); }