:root {
  --pink-50: #fff9f0;
  --pink-100: #ffeccc;
  --pink-200: #f5d076;
  --pink-300: #e8b923;
  --pink-400: #d4a012;
  --pink-500: #c8102e;
  --lavender: #fff4d6;
  --cream: #fffdf8;
  --text: #4a2424;
  --text-soft: #7a4a4a;
  --shadow: 0 12px 40px rgba(200, 16, 46, 0.18);
  --radius: 24px;
  --radius-sm: 14px;
  --font-display: "ZCOOL KuaiLe", "PingFang SC", sans-serif;
  --font-body: "Noto Serif SC", "Songti SC", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  background: linear-gradient(165deg, #fff5f0 0%, var(--cream) 30%, var(--lavender) 65%, #ffe8a8 100%);
  background-attachment: fixed;
  line-height: 1.7;
}

.sparkles {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.4;
  background-image:
    radial-gradient(circle at 10% 20%, var(--pink-200) 1px, transparent 1px),
    radial-gradient(circle at 80% 10%, var(--lavender) 2px, transparent 2px),
    radial-gradient(circle at 60% 80%, var(--pink-100) 1.5px, transparent 1.5px);
  background-size: 120px 120px, 180px 180px, 100px 100px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(255, 253, 248, 0.9);
  border-bottom: 1px solid rgba(212, 160, 18, 0.35);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--pink-500);
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.logo-icon {
  font-size: 1.5rem;
  animation: wiggle 3s ease-in-out infinite;
}

@keyframes wiggle {
  0%, 100% { transform: rotate(-5deg); }
  50% { transform: rotate(8deg); }
}

.nav {
  display: flex;
  gap: 0.35rem;
}

.nav-link {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--text-soft);
  font-size: 0.95rem;
  transition: background 0.2s, color 0.2s;
}

.nav-link:hover,
.nav-link.active {
  background: var(--pink-100);
  color: var(--pink-500);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  border: none;
  background: var(--pink-100);
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--pink-500);
  border-radius: 2px;
}

main {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  min-height: 70vh;
  padding: 2rem 0 3rem;
}

.hero-tag {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.25rem 0.85rem;
  background: var(--pink-100);
  color: var(--pink-500);
  border-radius: 999px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 400;
  margin: 0 0 1rem;
  line-height: 1.35;
  color: #5c2020;
}

.highlight {
  color: var(--pink-500);
  position: relative;
}

.highlight::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.1em;
  height: 0.35em;
  background: var(--pink-200);
  opacity: 0.6;
  z-index: -1;
  border-radius: 4px;
}

.hero-desc {
  margin: 0 0 1.75rem;
  color: var(--text-soft);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--pink-300), var(--pink-500));
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-ghost {
  background: #fff;
  color: var(--pink-500);
  border: 2px solid var(--pink-200);
}

.btn:hover {
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.photo-frame {
  background: #fff;
  padding: 12px 12px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transform: rotate(2deg);
  max-width: 100%;
}

.photo-frame img {
  display: block;
  width: 100%;
  max-width: 380px;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
  aspect-ratio: 3/4;
}

.floating-badge {
  position: absolute;
  background: #fff;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--pink-500);
  box-shadow: 0 8px 24px rgba(200, 16, 46, 0.22);
  animation: float 4s ease-in-out infinite;
}

.badge-1 { top: 8%; left: -5%; }
.badge-2 { bottom: 12%; right: -8%; animation-delay: 1s; }

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

.section {
  margin-top: 4rem;
}

.section-head {
  text-align: center;
  margin-bottom: 2rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 400;
  margin: 0 0 0.5rem;
  color: #5c2020;
}

.section-icon {
  color: var(--pink-400);
  margin-right: 0.25rem;
}

.section-head p {
  margin: 0;
  color: var(--text-soft);
}

.gallery-filters {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  border: none;
  background: #fff;
  color: var(--text-soft);
  padding: 0.45rem 1.1rem;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
  border: 2px solid transparent;
  transition: all 0.2s;
}

.filter-btn.active,
.filter-btn:hover {
  border-color: var(--pink-200);
  background: var(--pink-50);
  color: var(--pink-500);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

.gallery-item {
  border: none;
  padding: 0;
  background: #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(92, 74, 82, 0.08);
  transition: transform 0.25s, box-shadow 0.25s;
  text-align: left;
}

.gallery-item:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow);
}

.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.gallery-item span {
  display: block;
  padding: 0.65rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.diary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.diary-card {
  background: #fff;
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: 0 8px 28px rgba(200, 16, 46, 0.12);
  border: 1px solid var(--pink-100);
}

.diary-card time {
  font-size: 0.8rem;
  color: var(--pink-400);
}

.diary-card h3 {
  font-family: var(--font-display);
  margin: 0.5rem 0 0.75rem;
  font-weight: 400;
  font-size: 1.2rem;
}

.diary-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.diary-card--soft {
  background: linear-gradient(135deg, var(--pink-50), #fff);
}

.about-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
  background: rgba(255, 255, 255, 0.75);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--pink-100);
}

.about-text h2 {
  font-family: var(--font-display);
  font-weight: 400;
  margin-top: 0;
}

.about-list {
  padding-left: 1.2rem;
  color: var(--text-soft);
}

.about-note {
  font-size: 0.85rem;
  color: var(--text-soft);
}

.about-note code {
  background: var(--pink-100);
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  font-size: 0.8rem;
}

.about-sticker {
  width: 100%;
  max-width: 280px;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 12px 20px rgba(200, 16, 46, 0.28));
  animation: float 5s ease-in-out infinite;
}

.site-footer {
  text-align: center;
  padding: 2rem 1rem 2.5rem;
  color: var(--text-soft);
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
}

.footer-sub {
  margin: 0.35rem 0 0;
  font-size: 0.8rem;
  color: var(--pink-300);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(60, 40, 50, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.lightbox[hidden] {
  display: none !important;
}

.lightbox-inner {
  margin: 0;
  max-width: min(92vw, 900px);
  text-align: center;
}

.lightbox-inner img {
  max-width: 100%;
  max-height: 75vh;
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.lightbox-inner figcaption {
  margin-top: 1rem;
  color: #fff;
  font-size: 0.95rem;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  line-height: 1;
}

.lightbox-close { top: 1.5rem; right: 1.5rem; }
.lightbox-prev { left: 1rem; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 1rem; top: 50%; transform: translateY(-50%); }

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    min-height: auto;
  }

  .hero-visual { order: -1; }
  .hero-actions { justify-content: center; }
  .badge-1 { left: 5%; }
  .badge-2 { right: 5%; }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255, 245, 248, 0.98);
    padding: 1rem;
    border-bottom: 1px solid var(--pink-100);
  }

  .nav.open { display: flex; }

  .nav-toggle { display: flex; }

  .header-inner { position: relative; flex-wrap: wrap; }

  .about-layout { grid-template-columns: 1fr; }
}