*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: Georgia, 'Times New Roman', serif;
  background: #e8f4f8;
  color: #0d2a32;
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

:root {
  --ink: #0d2a32;
  --muted: #5a7a84;
  --pool: #e8f4f8;
  --deep: #0a3d4a;
  --aqua: #2eb8c9;
  --aqua-deep: #1a8a98;
  --coral: #e87a5d;
  --foam: #ffffff;
  --sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --line: rgba(13,42,50,0.1);
}

/* ——— POOL LANE-ROPE DISK NAV (unique) ——— */
.pooldeck {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--deep);
  padding: 16px 20px 20px;
}
.pooldeck .top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}
.pooldeck .brand {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}
.pooldeck .brand em {
  font-style: italic;
  color: var(--aqua);
}
.pooldeck .brand small {
  display: block;
  font-family: var(--sans);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-top: 2px;
}
.pooldeck .city {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
}

.ropes {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  position: relative;
}
/* lane rope line */
.ropes::before {
  content: '';
  position: absolute;
  left: 5%;
  right: 5%;
  top: 50%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--aqua) 0 12px,
    #fff 12px 20px,
    var(--coral) 20px 32px,
    #fff 32px 40px
  );
  border-radius: 2px;
  z-index: 0;
  opacity: 0.9;
}
.ropes a {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  color: rgba(255,255,255,0.55);
  transition: color 0.15s, transform 0.15s;
}
.ropes a .disk {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--aqua);
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  transition: border-color 0.15s, transform 0.15s;
}
.ropes a:nth-child(2) .disk { border-color: #f0c14b; }
.ropes a:nth-child(3) .disk { border-color: var(--coral); }
.ropes a:nth-child(4) .disk { border-color: #7ec8a3; }
.ropes a .lbl {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.ropes a:hover {
  color: #fff;
  transform: translateY(-2px);
}
.ropes a:hover .disk { transform: scale(1.08); }
.ropes a.active { color: #fff; }
.ropes a.active .disk {
  box-shadow: 0 0 0 3px rgba(46,184,201,0.35), 0 2px 8px rgba(0,0,0,0.25);
}

.mob {
  display: none;
  background: var(--aqua);
  color: #fff;
  border: none;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: 20px;
  cursor: pointer;
}

/* ——— LANE HERO ——— */
.lane {
  max-width: 1040px;
  margin: 0 auto;
  padding: 48px 24px 36px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
  align-items: center;
}
.lane .tag {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aqua-deep);
  margin-bottom: 12px;
}
.lane h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--deep);
  margin-bottom: 14px;
}
.lane h1 em {
  font-style: italic;
  color: var(--aqua-deep);
}
.lane p {
  font-family: var(--sans);
  color: var(--muted);
  max-width: 400px;
  margin-bottom: 26px;
  font-size: 1.05rem;
}
.lane .photo {
  border-radius: 50% 50% 4px 4px;
  overflow: hidden;
  border: 6px solid #fff;
  box-shadow: 0 12px 40px rgba(10,61,74,0.15);
}
.lane .photo img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 13px 24px;
  border: none;
  border-radius: 24px;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-aqua {
  background: var(--aqua);
  color: #fff;
}
.btn-aqua:hover { background: var(--aqua-deep); }
.btn-coral {
  background: var(--coral);
  color: #fff;
}
.btn-coral:hover { filter: brightness(1.05); }
.btn-ghost {
  background: transparent;
  color: var(--aqua-deep);
  box-shadow: inset 0 0 0 2px var(--aqua);
}
.btn-ghost:hover { background: rgba(46,184,201,0.1); }

/* ——— BUOYS ——— */
.buoys {
  max-width: 1040px;
  margin: 0 auto 44px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.buoy {
  background: var(--foam);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--line);
  box-shadow: 0 4px 16px rgba(10,61,74,0.05);
}
.buoy .n {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aqua-deep);
  margin-bottom: 8px;
}
.buoy h3 {
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 6px;
  color: var(--deep);
}
.buoy p {
  font-family: var(--sans);
  font-size: 0.9rem;
  color: var(--muted);
}

/* ——— STROKE ——— */
.section {
  max-width: 1040px;
  margin: 0 auto;
  padding: 28px 24px 56px;
}
.section .tag {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aqua-deep);
  margin-bottom: 8px;
}
.section h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 400;
  color: var(--deep);
  margin-bottom: 24px;
}

.stroke-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.stroke-card {
  background: var(--foam);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  transition: box-shadow 0.15s;
}
.stroke-card:hover { box-shadow: 0 8px 28px rgba(10,61,74,0.1); }
.stroke-card img {
  width: 100%;
  height: 170px;
  object-fit: cover;
}
.stroke-card .body { padding: 20px; }
.stroke-card .id {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 6px;
}
.stroke-card h3 {
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 6px;
}
.stroke-card p {
  font-family: var(--sans);
  font-size: 0.9rem;
  color: var(--muted);
}

/* ——— DEPTH ——— */
.depth-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 65vh;
}
.depth-split img {
  width: 100%;
  height: 100%;
  min-height: 380px;
  object-fit: cover;
}
.depth-split .txt {
  background: var(--deep);
  color: rgba(232,244,248,0.9);
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.depth-split .txt .tag {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: 12px;
}
.depth-split .txt h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 400;
  color: #fff;
  margin-bottom: 14px;
}
.depth-split .txt p {
  font-family: var(--sans);
  margin-bottom: 10px;
  color: rgba(232,244,248,0.75);
}

/* ——— DOCK ——— */
.dock-wrap {
  max-width: 1040px;
  margin: 24px auto 56px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 14px;
}
.dock-side {
  background: var(--deep);
  color: rgba(232,244,248,0.9);
  border-radius: 16px;
  padding: 32px;
}
.dock-side h2 {
  color: var(--aqua);
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: 20px;
}
.dk-row { margin-bottom: 14px; }
.dk-row .lbl {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 3px;
}
.dk-row p, .dk-row a {
  font-family: var(--sans);
  font-size: 0.95rem;
}
.dk-row a:hover { color: var(--aqua); }

.dock-form {
  background: var(--foam);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
}
.form-group { margin-bottom: 12px; }
.form-group label {
  display: block;
  font-family: var(--sans);
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 4px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--pool);
  font-family: var(--sans);
  font-size: 0.95rem;
  color: var(--ink);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--aqua);
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.ft {
  background: var(--deep);
  color: rgba(232,244,248,0.55);
  text-align: center;
  padding: 28px 20px;
  font-family: var(--sans);
  font-size: 0.85rem;
}
.ft strong { color: #fff; }

@media (max-width: 860px) {
  .ropes {
    display: none;
    flex-wrap: wrap;
    gap: 8px;
  }
  .ropes.open { display: flex; }
  .ropes::before { display: none; }
  .mob { display: inline-block; }
  .lane { grid-template-columns: 1fr; }
  .lane .photo { border-radius: 16px; }
  .lane .photo img { height: 240px; }
  .buoys { grid-template-columns: 1fr; }
  .stroke-grid { grid-template-columns: 1fr; }
  .depth-split { grid-template-columns: 1fr; }
  .depth-split img { min-height: 220px; }
  .dock-wrap { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}