:root {
  --background: oklch(96% 0.035 230);
  --foreground: oklch(30% 0.05 240);
  --muted: oklch(93% 0.03 230);
  --muted-foreground: oklch(48% 0.04 240);
  --card: #fff;
  --card-foreground: oklch(30% 0.05 240);
  --border: oklch(88% 0.04 230);
  --primary: oklch(68% 0.14 230);
  --primary-foreground: oklch(99% 0.01 230);
  --accent: oklch(82% 0.1 210);
  --secondary: oklch(93% 0.04 230);
  --secondary-foreground: oklch(40% 0.06 240);
  --rose: oklch(70% 0.12 230);
  --shadow: oklch(68% 0.14 230 / 0.25);
  --radius: 1.25rem;
  --font: Inter, "PingFang SC", "Microsoft YaHei", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji";
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: var(--font);
  color: var(--foreground);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
}

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

button {
  font: inherit;
}

.page {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  padding: 32px 16px;
}

.blob {
  pointer-events: none;
  position: absolute;
  border-radius: 999px;
  filter: blur(64px);
}

.blob-a {
  top: -80px;
  left: -80px;
  width: 288px;
  height: 288px;
  background: oklch(68% 0.14 230 / 0.28);
}

.blob-b {
  top: 160px;
  right: 0;
  width: 384px;
  height: 384px;
  background: oklch(82% 0.1 210 / 0.22);
}

.blob-c {
  bottom: 0;
  left: 33%;
  width: 320px;
  height: 320px;
  background: oklch(88% 0.06 240 / 0.35);
}

.wrap {
  position: relative;
  z-index: 1;
  width: min(100%, 560px);
  margin: 0 auto;
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.mascot {
  width: 64px;
  height: 64px;
  object-fit: contain;
  filter: drop-shadow(0 10px 16px oklch(68% 0.14 230 / 0.28));
  animation: float-gentle 3.2s ease-in-out infinite;
}

.hero h1 {
  margin: 12px 0 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero-sub {
  margin: 6px 0 0;
  max-width: 28rem;
  font-size: 12px;
  color: var(--muted-foreground);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding: 6px 16px;
  border: 1px solid oklch(68% 0.14 230 / 0.22);
  border-radius: 999px;
  background: oklch(68% 0.14 230 / 0.12);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.badge:hover {
  background: oklch(68% 0.14 230 / 0.18);
}

.badge svg {
  width: 14px;
  height: 14px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 32px;
}

.card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px oklch(68% 0.14 230 / 0.16);
}

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.icon-box {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
}

.icon-box svg {
  width: 20px;
  height: 20px;
}

.icon-orange {
  background: #e0f2fe;
  color: #0284c7;
}

.icon-pink {
  background: #ecfeff;
  color: #0891b2;
}

.card h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.card p {
  margin: 4px 0 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted-foreground);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.tag {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--secondary);
  color: var(--secondary-foreground);
  font-size: 10px;
  font-weight: 500;
}

.card-foot {
  margin-top: auto;
  padding-top: 12px;
}

.card-foot hr {
  margin: 0 0 12px;
  border: 0;
  border-top: 1px solid var(--border);
}

.join-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 8px 16px;
  border-radius: 999px;
  background: linear-gradient(to right, var(--primary), var(--accent));
  color: var(--primary-foreground);
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 4px 6px -1px var(--shadow), 0 2px 4px -2px var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.join-btn svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.join-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 18px oklch(68% 0.14 230 / 0.35);
}

.join-btn:hover svg {
  transform: translateX(4px);
}

.join-btn:active {
  transform: translateY(0);
}

.site-footer {
  margin-top: 48px;
  text-align: center;
  font-size: 12px;
  color: var(--muted-foreground);
}

.site-footer p {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin: 0;
}

.site-footer svg {
  width: 14px;
  height: 14px;
  color: var(--rose);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 20;
  transform: translateX(-50%) translateY(16px);
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--foreground);
  color: #fff;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (min-width: 640px) {
  .page {
    padding: 40px 20px;
  }

  .mascot {
    width: 80px;
    height: 80px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .hero-sub {
    font-size: 14px;
  }

  .badge {
    margin-top: 16px;
    gap: 8px;
    padding: 8px 20px;
    font-size: 14px;
  }

  .badge svg {
    width: 16px;
    height: 16px;
  }

  .wrap {
    width: min(100%, 960px);
  }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 40px;
  }

  .card {
    padding: 16px;
  }

  .card-top {
    gap: 12px;
  }

  .icon-box {
    width: 44px;
    height: 44px;
  }

  .card h3 {
    font-size: 18px;
  }

  .card p {
    font-size: 14px;
  }

  .tag {
    font-size: 12px;
  }

  .card-foot {
    padding-top: 16px;
  }

  .card-foot hr {
    margin-bottom: 16px;
  }

  .join-btn {
    gap: 8px;
    padding: 10px 16px;
    font-size: 14px;
  }

  .join-btn svg {
    width: 16px;
    height: 16px;
  }

  .site-footer {
    font-size: 14px;
  }

  .site-footer svg {
    width: 16px;
    height: 16px;
  }
}

@media (min-width: 1024px) {
  .page {
    padding: 48px 24px;
  }

  .mascot {
    width: 112px;
    height: 112px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-sub {
    font-size: 16px;
  }

  .grid {
    margin-top: 48px;
  }

  .card {
    padding: 20px;
  }

  .card-top {
    gap: 16px;
  }

  .icon-box {
    width: 48px;
    height: 48px;
  }

  .icon-box svg {
    width: 24px;
    height: 24px;
  }

  .join-btn {
    padding: 12px 16px;
  }
}

@keyframes float-gentle {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 16px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
}

.back-link svg {
  width: 14px;
  height: 14px;
}

.gallery-wrap {
  width: min(100%, 1120px);
}

.gallery-status {
  margin: 28px 0 0;
  text-align: center;
  color: var(--muted-foreground);
  font-size: 14px;
}

.day {
  margin-top: 28px;
}

.day h2 {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
}

.falls {
  columns: 2;
  column-gap: 12px;
}

.shot {
  display: inline-block;
  width: 100%;
  margin: 0 0 12px;
  break-inside: avoid;
}

.shot-btn {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: 18px;
  background: var(--card);
  cursor: zoom-in;
  overflow: hidden;
}

.shot-btn img {
  display: block;
  width: 100%;
  height: auto;
}

.viewer {
  max-width: none;
  max-height: none;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: visible;
}

.viewer img {
  display: block;
  max-width: 92vw;
  max-height: 92vh;
  border-radius: 16px;
}

.viewer::backdrop {
  background: oklch(18% 0.04 240 / 0.78);
}

@media (min-width: 800px) {
  .falls {
    columns: 3;
  }
}

@media (min-width: 1100px) {
  .falls {
    columns: 4;
    column-gap: 16px;
  }

  .shot {
    margin-bottom: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mascot,
  .card,
  .join-btn,
  .join-btn svg,
  .toast {
    animation: none;
    transition: none;
  }
}