* {
  box-sizing: border-box;
}

:root {
  --bg-1: #f4f1ea;
  --bg-2: #e3ebe1;
  --ink: #1f2a2d;
  --muted: #44555a;
  --line: #b7c5bb;
  --panel: rgba(255, 255, 255, 0.72);
  --shadow: 0 18px 45px rgba(27, 39, 37, 0.12);
}

body {
  margin: 0;
  font-family: "SUIT", "Noto Sans KR", sans-serif;
  line-height: 1.5;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, #f8f6ef 0%, transparent 30%),
    radial-gradient(circle at 82% 16%, #dde8de 0%, transparent 26%),
    linear-gradient(180deg, var(--bg-1), var(--bg-2));
}

header,
main,
footer {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

header {
  padding: 2rem 0 1rem;
}

header h1 {
  margin: 0;
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  letter-spacing: 0.04em;
}

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

main {
  padding: 1rem 0 3rem;
}

.interests p {
  margin-top: 0.4rem;
  color: var(--muted);
}

.orbit {
  --orbit-size: min(88vw, 760px);
  --logo-size: 16.8rem;
  --radius: calc(var(--orbit-size) / 2 - var(--logo-size) / 2 - 0.4rem);
  --orbit-duration: 24s;
  position: relative;
  width: var(--orbit-size);
  height: var(--orbit-size);
  margin: 1.5rem auto 2.2rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: inset 0 0 20px rgba(96, 123, 111, 0.2);
}

.orbit::before {
  content: "EXPLORE";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: clamp(0.8rem, 1.6vw, 0.95rem);
  letter-spacing: 0.24em;
  color: #5f7264;
}

.orbit-ring {
  position: absolute;
  inset: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  animation: orbit-spin var(--orbit-duration) linear infinite;
}

.orbit-item {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--logo-size);
  height: var(--logo-size);
  transform:
    translate(-50%, -50%)
    rotate(calc(var(--i) * 1turn / var(--count)))
    translateY(calc(-1 * var(--radius)))
    rotate(calc(-1 * var(--i) * 1turn / var(--count)));
}

.orbit-link {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  background: transparent;
  transition: transform 220ms ease;
  outline: none;
}

.orbit-logo-shell {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  transition: transform 220ms ease;
}

.orbit-logo-spin {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  animation: logo-counter-spin var(--orbit-duration) linear infinite reverse;
}

.orbit-logo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.orbit-link:hover .orbit-logo-shell,
.orbit-link:focus-visible .orbit-logo-shell {
  transform: scale(2);
}

.orbit.is-paused .orbit-ring,
.orbit.is-paused .orbit-logo-spin {
  animation-play-state: paused;
}

.recent-posts {
  margin-top: 2.8rem;
}

.recent-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.control-toolbar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.control-trigger,
.control-reset {
  border: 1px solid #93a59a;
  background: #f9fbf8;
  color: var(--ink);
  border-radius: 999px;
  padding: 0.48rem 0.95rem;
  font: inherit;
  cursor: pointer;
}

.control-trigger.is-active {
  background: #2d403a;
  border-color: #2d403a;
  color: #ffffff;
}

.controls {
  display: grid;
  gap: 0.75rem;
}

.controls-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.75rem;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--panel);
  box-shadow: 0 10px 30px rgba(25, 35, 32, 0.1);
  padding: 1rem;
}

.controls-panel[hidden] {
  display: none !important;
}

.controls-panel legend {
  padding: 0 0.3rem;
  font-size: 0.92rem;
}

.control-field {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
}

.control-field select,
.control-field input:not([type="range"]) {
  border: 1px solid #a5b5a9;
  border-radius: 0.65rem;
  padding: 0.5rem 0.58rem;
  font: inherit;
  color: var(--ink);
  background: #f9fbf8;
  width: 100%;
}

.range-pair {
  display: grid;
  gap: 0.35rem;
}

.range-track {
  --range-start: 0%;
  --range-end: 100%;
  position: relative;
  height: 1.5rem;
}

.range-track::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 0.35rem;
  transform: translateY(-50%);
  border-radius: 999px;
  background: #c8d4cc;
}

.range-track::after {
  content: "";
  position: absolute;
  top: 50%;
  left: var(--range-start);
  width: calc(var(--range-end) - var(--range-start));
  height: 0.35rem;
  transform: translateY(-50%);
  border-radius: 999px;
  background: #4f88ff;
  opacity: 0;
}

.range-track.is-custom-range::after {
  opacity: 1;
}

.range-track input[type="range"] {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  margin: 0;
  transform: translateY(-50%);
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  pointer-events: none;
  z-index: 2;
}

.range-track input[type="range"]::-webkit-slider-runnable-track {
  height: 0.35rem;
  border-radius: 999px;
  background: transparent;
}

.range-track input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 1px solid #ffffff;
  background: #2d403a;
  box-shadow: 0 1px 6px rgba(20, 26, 23, 0.25);
  margin-top: -0.325rem;
  pointer-events: auto;
  cursor: pointer;
}

.range-pair.is-awaiting-max .range-track input[data-range="min"]::-webkit-slider-thumb,
.range-track.is-custom-range input[type="range"]::-webkit-slider-thumb {
  background: #4f88ff;
}

.range-pair.is-awaiting-max .range-track input[data-range="max"]::-webkit-slider-thumb {
  background: #2d403a;
}

.range-track input[type="range"]::-moz-range-track {
  height: 0.35rem;
  border-radius: 999px;
  background: transparent;
}

.range-track input[data-range="min"] {
  z-index: 3;
}

.range-track input[data-range="max"] {
  z-index: 4;
}

.range-track input[type="range"]::-moz-range-thumb {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 1px solid #ffffff;
  background: #2d403a;
  box-shadow: 0 1px 6px rgba(20, 26, 23, 0.25);
  pointer-events: auto;
  cursor: pointer;
}

.range-pair.is-awaiting-max .range-track input[data-range="min"]::-moz-range-thumb,
.range-track.is-custom-range input[type="range"]::-moz-range-thumb {
  background: #4f88ff;
}

.range-pair.is-awaiting-max .range-track input[data-range="max"]::-moz-range-thumb {
  background: #2d403a;
}

.range-track input[type="range"]:focus-visible::-webkit-slider-thumb {
  outline: 2px solid #2d403a;
  outline-offset: 2px;
}

.range-track input[type="range"]:focus-visible::-moz-range-thumb {
  outline: 2px solid #2d403a;
  outline-offset: 2px;
}

.range-label {
  margin: 0;
  color: #4f6158;
  font-size: 0.84rem;
}

.range-ticks {
  display: flex;
  justify-content: space-between;
  gap: 0.2rem;
}

.range-tick-item {
  min-width: 0;
  display: grid;
  justify-items: center;
  gap: 0.15rem;
  color: #55675e;
  font-size: 0.66rem;
  cursor: pointer;
}

.range-tick-mark {
  width: 1px;
  height: 0.4rem;
  background: #8ea195;
}

.range-tick-label {
  white-space: nowrap;
}

.range-tick-item:hover .range-tick-label,
.range-tick-item:focus-visible .range-tick-label {
  color: #1f2a2d;
  font-weight: 700;
}

.orbit-tooltip {
  position: fixed;
  z-index: 40;
  pointer-events: none;
  padding: 0.35rem 0.55rem;
  border-radius: 0.45rem;
  background: rgba(20, 28, 31, 0.88);
  color: #ffffff;
  font-size: 0.78rem;
  line-height: 1;
  letter-spacing: 0.02em;
  transform: translate(0, 0);
}

.category-page {
  display: grid;
  gap: 1rem;
}

.post-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 1rem;
}

.post-group-heading {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-top: 0.4rem;
}

.post-group-heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(79, 97, 88, 0.45), rgba(79, 97, 88, 0.12));
}

.post-group-heading-text {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #2b3d36;
  white-space: nowrap;
}

.post-card {
  aspect-ratio: 1 / 1;
}

.post-card-link {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 1rem;
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--shadow);
  border: 1px solid #d7dfd8;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.post-card:hover .post-card-link,
.post-card:focus-within .post-card-link {
  transform: scale(1.04);
  box-shadow: 0 22px 55px rgba(27, 39, 37, 0.18);
}

.post-image-wrap {
  display: block;
  width: 100%;
  height: 100%;
  background: #d0ddd2;
}

.post-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-title {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  min-height: 0;
  padding: 0.65rem 0.75rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.15));
  color: #ffffff;
  font-weight: 700;
  line-height: 1.3;
  overflow: hidden;
  z-index: 1;
  visibility: visible;
  opacity: 1;
}

.post-meta-block {
  margin: 0 0 1.25rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--panel);
  box-shadow: 0 10px 30px rgba(25, 35, 32, 0.08);
}

.post-meta-heading {
  margin: 0 0 0.8rem;
  font-size: 1rem;
}

.post-meta-list {
  margin: 0;
  display: grid;
  gap: 0.7rem;
}

.post-meta-item {
  display: grid;
  gap: 0.2rem;
}

.post-meta-item dt {
  font-size: 0.82rem;
  font-weight: 700;
  color: #4f6158;
}

.post-meta-item dd {
  margin: 0;
  word-break: break-word;
}

.recent-posts ul {
  margin: 0;
  padding: 0;
}

footer {
  padding: 1rem 0 2rem;
  color: var(--muted);
}

.tilt {
  transform-style: preserve-3d;
  transition: transform 120ms ease-out;
}

@keyframes orbit-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes logo-counter-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 520px) {
  .orbit {
    --orbit-size: min(92vw, 420px);
    --logo-size: 7.2rem;
  }

  .controls-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .orbit-ring,
  .orbit-logo-spin {
    animation: none;
  }

  .tilt {
    transform: none !important;
  }
}