:root {
  --love-primary: #ff6b81;
  --love-primary-dark: #e8455e;
  --love-primary-light: #ff8fa3;
  --love-secondary: #ffa07a;
  --love-accent: #ffc4d0;
  --love-rose: #f7a8b8;
  --love-bg: #fff5f7;
  --love-bg-alt: #ffffff;
  --love-surface: rgba(255, 255, 255, 0.72);
  --love-surface-solid: #ffffff;
  --love-text: #3d2c33;
  --love-text-secondary: #8a6e78;
  --love-text-light: #b8a0a8;
  --love-border: rgba(255, 107, 129, 0.15);
  --love-shadow: 0 8px 32px rgba(255, 107, 129, 0.12);
  --love-shadow-hover: 0 16px 48px rgba(255, 107, 129, 0.22);
  --love-glass: rgba(255, 255, 255, 0.55);
  --love-glass-border: rgba(255, 255, 255, 0.65);
  --love-gradient: linear-gradient(135deg, #ff6b81 0%, #ffa07a 50%, #ffc4d0 100%);
  --love-gradient-soft: linear-gradient(135deg, #fff0f3 0%, #fff5f0 50%, #fff0f5 100%);
  --love-radius-sm: 10px;
  --love-radius: 18px;
  --love-radius-lg: 28px;
  --love-radius-full: 999px;
  --love-transition: 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
  --love-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --love-bg: #1a1215;
    --love-bg-alt: #231a1e;
    --love-surface: rgba(45, 32, 38, 0.72);
    --love-surface-solid: #2d2026;
    --love-text: #f2e6ea;
    --love-text-secondary: #c4a8b2;
    --love-text-light: #8a6e78;
    --love-border: rgba(255, 107, 129, 0.2);
    --love-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --love-shadow-hover: 0 16px 48px rgba(255, 107, 129, 0.25);
    --love-glass: rgba(45, 32, 38, 0.55);
    --love-glass-border: rgba(255, 107, 129, 0.18);
    --love-gradient-soft: linear-gradient(135deg, #2a1a1f 0%, #2d2026 50%, #2a1a24 100%);
  }
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--love-font);
  background-color: var(--love-bg);
  background-image: var(--love-gradient-soft);
  background-attachment: fixed;
  color: var(--love-text);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--love-transition), color var(--love-transition);
}

::selection {
  background: var(--love-primary);
  color: #fff;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--love-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--love-primary-light);
  border-radius: var(--love-radius-full);
  border: 2px solid var(--love-bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--love-primary);
}

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--love-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--love-glass-border);
  box-shadow: 0 4px 24px rgba(255, 107, 129, 0.08);
  transition: background var(--love-transition), box-shadow var(--love-transition);
}

header nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  justify-content: center;
}

header nav a {
  position: relative;
  color: var(--love-text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: var(--love-radius-full);
  transition: color var(--love-transition), background var(--love-transition), transform var(--love-transition);
  white-space: nowrap;
}

header nav a::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--love-gradient);
  border-radius: var(--love-radius-full);
  transition: width var(--love-transition), left var(--love-transition);
}

header nav a:hover {
  color: var(--love-primary);
  background: rgba(255, 107, 129, 0.08);
  transform: translateY(-2px);
}

header nav a:hover::after {
  width: 60%;
  left: 20%;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

section {
  margin-bottom: 3rem;
  padding: 2.5rem 2.25rem;
  background: var(--love-surface);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--love-glass-border);
  border-radius: var(--love-radius-lg);
  box-shadow: var(--love-shadow);
  transition: box-shadow var(--love-transition), transform var(--love-transition), background var(--love-transition);
  opacity: 0;
  transform: translateY(30px);
  animation: loveFadeUp 0.7s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

section:nth-child(1) { animation-delay: 0.05s; }
section:nth-child(2) { animation-delay: 0.1s; }
section:nth-child(3) { animation-delay: 0.15s; }
section:nth-child(4) { animation-delay: 0.2s; }
section:nth-child(5) { animation-delay: 0.25s; }
section:nth-child(6) { animation-delay: 0.3s; }
section:nth-child(7) { animation-delay: 0.35s; }
section:nth-child(8) { animation-delay: 0.4s; }
section:nth-child(9) { animation-delay: 0.45s; }
section:nth-child(10) { animation-delay: 0.5s; }
section:nth-child(11) { animation-delay: 0.55s; }
section:nth-child(12) { animation-delay: 0.6s; }
section:nth-child(13) { animation-delay: 0.65s; }
section:nth-child(14) { animation-delay: 0.7s; }

section:hover {
  box-shadow: var(--love-shadow-hover);
  transform: translateY(-4px);
}

@keyframes loveFadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#home {
  position: relative;
  background: var(--love-gradient);
  border: none;
  color: #fff;
  text-align: center;
  padding: 4.5rem 2.25rem;
  overflow: hidden;
  border-radius: var(--love-radius-lg);
  box-shadow: 0 20px 60px rgba(255, 107, 129, 0.3);
}

#home::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.25) 0%, transparent 50%),
              radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
  animation: loveShine 12s linear infinite;
  pointer-events: none;
}

@keyframes loveShine {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#home h1 {
  position: relative;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.12);
  line-height: 1.3;
}

#home p {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.08);
}

h2 {
  position: relative;
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  font-weight: 700;
  color: var(--love-text);
  margin-bottom: 1.25rem;
  padding-left: 1rem;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 5px;
  background: var(--love-gradient);
  border-radius: var(--love-radius-full);
}

h3 {
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  font-weight: 600;
  color: var(--love-primary-dark);
  margin: 1.5rem 0 0.75rem;
  letter-spacing: -0.005em;
}

@media (prefers-color-scheme: dark) {
  h3 {
    color: var(--love-primary-light);
  }
}

p {
  color: var(--love-text-secondary);
  margin-bottom: 0.85rem;
  font-size: 0.98rem;
  line-height: 1.85;
}

section > p:last-child {
  margin-bottom: 0;
}

article {
  padding: 1.5rem 1.6rem;
  margin-bottom: 1.1rem;
  background: var(--love-bg-alt);
  border: 1px solid var(--love-border);
  border-radius: var(--love-radius);
  transition: transform var(--love-transition), box-shadow var(--love-transition), border-color var(--love-transition);
  position: relative;
  overflow: hidden;
}

article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--love-gradient);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--love-transition);
}

article:hover {
  transform: translateX(6px);
  box-shadow: var(--love-shadow);
  border-color: var(--love-primary-light);
}

article:hover::before {
  transform: scaleY(1);
}

article h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
  color: var(--love-text);
}

article p {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

article p:first-of-type {
  color: var(--love-text-light);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

article a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--love-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--love-radius-full);
  background: rgba(255, 107, 129, 0.08);
  transition: background var(--love-transition), color var(--love-transition), transform var(--love-transition), box-shadow var(--love-transition);
}

article a::after {
  content: "→";
  transition: transform var(--love-transition);
}

article a:hover {
  background: var(--love-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 129, 0.35);
}

article a:hover::after {
  transform: translateX(4px);
}

dl {
  display: grid;
  gap: 0.75rem;
}

dt {
  font-weight: 700;
  color: var(--love-text);
  font-size: 1rem;
  padding: 0.9rem 1.1rem 0.5rem;
  background: var(--love-bg-alt);
  border: 1px solid var(--love-border);
  border-bottom: none;
  border-radius: var(--love-radius) var(--love-radius) 0 0;
  position: relative;
  transition: color var(--love-transition), background var(--love-transition);
}

dt::before {
  content: "Q";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-right: 0.6rem;
  font-size: 0.72rem;
  font-weight: 800;
  color: #fff;
  background: var(--love-gradient);
  border-radius: 50%;
  vertical-align: middle;
  flex-shrink: 0;
}

dd {
  color: var(--love-text-secondary);
  font-size: 0.93rem;
  line-height: 1.85;
  padding: 0 1.1rem 0.9rem 1.1rem;
  background: var(--love-bg-alt);
  border: 1px solid var(--love-border);
  border-top: none;
  border-radius: 0 0 var(--love-radius) var(--love-radius);
  margin-bottom: 0.25rem;
  transition: background var(--love-transition), border-color var(--love-transition);
}

dt:hover {
  color: var(--love-primary);
}

dt:hover + dd {
  border-color: var(--love-primary-light);
}

#howto h3 {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  background: rgba(255, 107, 129, 0.1);
  border-radius: var(--love-radius-full);
  font-size: 0.95rem;
  margin-top: 1.25rem;
}

#howto p {
  padding-left: 0.5rem;
}

#news p {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
}

#news p::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  background: var(--love-gradient);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(255, 107, 129, 0.15);
}

#contact p {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.95rem;
}

#contact p::before {
  content: "◆";
  color: var(--love-primary-light);
  font-size: 0.7rem;
  line-height: 1.9;
  flex-shrink: 0;
}

#sitemap ul,
#links ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.6rem;
}

#sitemap li a {
  display: block;
  padding: 0.6rem 1rem;
  color: var(--love-text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  background: var(--love-bg-alt);
  border: 1px solid var(--love-border);
  border-radius: var(--love-radius);
  transition: all var(--love-transition);
}

#sitemap li a:hover {
  color: #fff;
  background: var(--love-gradient);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 107, 129, 0.3);
}

#links li {
  padding: 0.6rem 1rem;
  color: var(--love-text-secondary);
  font-size: 0.92rem;
  background: var(--love-bg-alt);
  border: 1px solid var(--love-border);
  border-radius: var(--love-radius);
  transition: all var(--love-transition);
  cursor: default;
}

#links li:hover {
  color: var(--love-primary);
  border-color: var(--love-primary-light);
  transform: translateY(-3px);
  box-shadow: var(--love-shadow);
}

#legal p {
  font-size: 0.88rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--love-border);
}

#legal p:last-child {
  border-bottom: none;
}

footer {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--love-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-top: 1px solid var(--love-glass-border);
  color: var(--love-text-light);
  font-size: 0.88rem;
  margin-top: 1rem;
}

footer p {
  color: var(--love-text-light);
  font-size: 0.88rem;
  margin: 0;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--love-primary);
  outline-offset: 3px;
  border-radius: var(--love-radius-sm);
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  header nav {
    padding: 0.7rem 1rem;
    gap: 0.15rem;
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  header nav::-webkit-scrollbar {
    display: none;
  }

  header nav a {
    font-size: 0.82rem;
    padding: 0.4rem 0.7rem;
    flex-shrink: 0;
  }

  main {
    padding: 0 1rem 3rem;
  }

  section {
    padding: 1.75rem 1.35rem;
    margin-bottom: 2rem;
    border-radius: var(--love-radius);
  }

  #home {
    padding: 3rem 1.35rem;
  }

  #home h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
    padding-left: 0.85rem;
  }

  article {
    padding: 1.2rem 1.15rem;
  }

  article:hover {
    transform: translateY(-3px);
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.5rem;
  }

  #sitemap li a,
  #links li {
    padding: 0.5rem 0.8rem;
    font-size: 0.85rem;
  }

  dt {
    font-size: 0.93rem;
    padding: 0.75rem 0.9rem 0.4rem;
  }

  dd {
    font-size: 0.87rem;
    padding: 0 0.9rem 0.75rem 0.9rem;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  header nav a {
    font-size: 0.78rem;
    padding: 0.35rem 0.6rem;
  }

  section {
    padding: 1.4rem 1.1rem;
    border-radius: var(--love-radius-sm);
  }

  #home {
    padding: 2.5rem 1.1rem;
    border-radius: var(--love-radius);
  }

  #home h1 {
    font-size: 1.3rem;
  }

  h2 {
    font-size: 1.15rem;
  }

  h3 {
    font-size: 1rem;
  }

  p {
    font-size: 0.92rem;
  }

  article {
    padding: 1rem;
  }

  article a {
    font-size: 0.85rem;
    padding: 0.3rem 0.75rem;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: 1fr 1fr;
  }

  footer {
    padding: 1.5rem 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  section {
    opacity: 1;
    transform: none;
  }
}

@media print {
  header,
  footer {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  section {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
    opacity: 1;
    transform: none;
  }

  #home {
    background: #f5f5f5;
    color: #000;
  }
}