/* 乐趣萌宠 — 柔和冒险风（贴合游戏晴空草地调性） */
:root {
  --ink: #243a4d;
  --ink-soft: #5a7185;
  --ink-mute: #8a9bab;
  --sky: #e8f6fd;
  --sky-mid: #d4eefb;
  --mint: #e8f7ef;
  --leaf: #4caf6e;
  --leaf-deep: #3a9458;
  --sun: #ffd54a;
  --sun-deep: #f0b820;
  --coral: #ff7a59;
  --blue: #3b9fd9;
  --blue-deep: #2a7eb3;
  --navy-soft: #2f5f7a;
  --white: #ffffff;
  --line: rgba(36, 58, 77, 0.1);
  --font-display: "ZCOOL XiaoWei", "Noto Sans SC", "PingFang SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 4.25rem;
  --max: 1100px;
  --radius: 1rem;
  --radius-sm: 0.65rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--ink);
  background: var(--sky);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

h1,
h2,
h3,
strong {
  font-weight: 700;
}

/* Soft atmosphere */
.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 10% 0%, rgba(59, 159, 217, 0.22), transparent 55%),
    radial-gradient(ellipse 60% 45% at 95% 15%, rgba(255, 213, 74, 0.2), transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(76, 175, 110, 0.14), transparent 55%),
    linear-gradient(180deg, #eaf7fd 0%, #eef9f4 50%, #e8f6fd 100%);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.35rem;
}

.wrap.narrow {
  max-width: 680px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(232, 246, 253, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.35rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.brand img {
  width: 2.65rem;
  height: 2.65rem;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--sun);
  box-shadow: 0 2px 10px rgba(59, 159, 217, 0.2);
}

.brand-text {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--blue-deep);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--blue-deep);
}

.nav-cta {
  padding: 0.45rem 1.05rem;
  background: linear-gradient(135deg, var(--sun) 0%, var(--sun-deep) 100%);
  color: var(--ink) !important;
  font-weight: 700 !important;
  border-radius: 999px;
  box-shadow: 0 2px 0 rgba(200, 150, 20, 0.35);
  transition: transform 0.2s var(--ease), box-shadow 0.2s !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 0 rgba(200, 150, 20, 0.4);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.nav-toggle span {
  display: block;
  width: 1.3rem;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(100vh, 860px);
  min-height: min(100dvh, 860px);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 28%;
  animation: heroDrift 26s ease-in-out infinite alternate;
}

@keyframes heroDrift {
  from { transform: scale(1.04); }
  to { transform: scale(1.1) translate(-1%, -0.5%); }
}

.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(30, 70, 100, 0.72) 0%, rgba(30, 70, 100, 0.4) 42%, rgba(30, 70, 100, 0.12) 70%, transparent 100%),
    linear-gradient(180deg, transparent 40%, rgba(30, 70, 100, 0.55) 100%);
}

.hero-frame {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 5.5rem 1.35rem 4.25rem;
}

.hero-copy {
  max-width: 34rem;
  color: var(--white);
}

.hero-brand {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.4rem);
  line-height: 1.1;
  letter-spacing: 0.06em;
  color: var(--sun);
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.15), 0 8px 24px rgba(0, 0, 0, 0.25);
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.4rem, 3.2vw, 1.95rem);
  font-weight: 700;
  line-height: 1.4;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.hero-lead {
  margin: 0 0 1.75rem;
  font-size: 1.02rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.25);
  max-width: 30em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  font-weight: 700;
  font-size: 0.975rem;
  border-radius: 999px;
  transition: transform 0.2s var(--ease), box-shadow 0.2s, background 0.2s, border-color 0.2s;
}

.btn-solid {
  background: linear-gradient(135deg, var(--sun) 0%, var(--sun-deep) 100%);
  color: var(--ink);
  box-shadow: 0 3px 0 rgba(180, 130, 10, 0.4);
}

.btn-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 0 rgba(180, 130, 10, 0.35);
}

.btn-line {
  background: rgba(255, 255, 255, 0.14);
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(8px);
}

.btn-line:hover {
  background: rgba(255, 255, 255, 0.24);
  transform: translateY(-2px);
}

.btn-line-light {
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.45);
}

.btn-line-light:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
}

/* Blocks */
.block {
  padding: 5rem 0;
}

.block-head {
  margin-bottom: 2.5rem;
}

.label {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue);
}

.label.light {
  color: rgba(255, 255, 255, 0.7);
}

.block h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  letter-spacing: 0.04em;
  line-height: 1.3;
  color: var(--blue-deep);
}

/* About */
.about {
  background: linear-gradient(180deg, transparent, var(--mint) 45%, transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3rem;
  align-items: center;
}

.about-aside img {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  filter: drop-shadow(0 16px 36px rgba(59, 159, 217, 0.28));
  animation: floatY 5.5s ease-in-out infinite;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.about-body h2 {
  margin-bottom: 1.2rem;
}

.about-body p:not(.label) {
  margin: 0 0 1.1rem;
  color: var(--ink-soft);
}

.about-body p:last-child {
  margin-bottom: 0;
}

/* Chapters */
.features {
  background: var(--white);
}

.chapters {
  display: grid;
  gap: 1.75rem;
}

.chapter {
  display: grid;
  grid-template-columns: 3.5rem 1.1fr 1fr;
  gap: 1.5rem;
  align-items: center;
  padding: 1.35rem;
  background: linear-gradient(135deg, var(--sky) 0%, var(--white) 60%);
  border-radius: var(--radius);
  border: 1px solid rgba(59, 159, 217, 0.12);
  transition: transform 0.25s var(--ease), box-shadow 0.25s;
}

.chapter:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(59, 159, 217, 0.12);
}

.chapter-no {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--sun-deep);
  line-height: 1;
  text-align: center;
}

.chapter-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.chapter-text h3 {
  margin: 0 0 0.6rem;
  font-size: 1.25rem;
  color: var(--ink);
}

.chapter-text p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.975rem;
}

/* Gameplay */
.gameplay {
  background: linear-gradient(165deg, #3a8fc4 0%, #4caf8a 100%);
  color: var(--white);
}

.gameplay .label {
  color: rgba(255, 255, 255, 0.75);
}

.gameplay h2 {
  color: var(--white);
}

.rail {
  display: grid;
  grid-template-columns: 11.5rem 1fr;
  gap: 2rem;
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.rail-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.rail-tab {
  text-align: left;
  padding: 0.85rem 1rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.65);
  border-radius: var(--radius-sm);
  transition: background 0.2s, color 0.2s;
}

.rail-tab:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.rail-tab.is-active {
  color: var(--ink);
  background: var(--sun);
}

.rail-panel {
  display: none;
  animation: fadeIn 0.35s var(--ease);
  padding: 0.25rem 0.5rem;
}

.rail-panel.is-active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.rail-panel h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.03em;
}

.rail-panel > p {
  margin: 0 0 1.2rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 38em;
}

.rail-panel ul {
  display: grid;
  gap: 0.6rem;
}

.rail-panel li {
  position: relative;
  padding-left: 1.2rem;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.975rem;
}

.rail-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--sun);
}

/* Welfare */
.welfare {
  background: var(--mint);
}

.days {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.85rem;
  margin-bottom: 2.25rem;
}

.day {
  background: var(--white);
  padding: 1.35rem 1rem;
  text-align: center;
  border-radius: var(--radius);
  border: 1px solid rgba(76, 175, 110, 0.15);
  transition: transform 0.2s, box-shadow 0.2s;
}

.day:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(76, 175, 110, 0.12);
}

.day em {
  display: block;
  margin-bottom: 0.65rem;
  font-style: normal;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--leaf-deep);
}

.day p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.codes {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 1.75rem;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 213, 74, 0.35);
}

.codes-info h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--blue-deep);
}

.codes-info p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.codes-list {
  display: grid;
  gap: 0.7rem;
}

.code-row {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
}

.code-row code {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1rem;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--sky);
  color: var(--coral);
  border-radius: var(--radius-sm);
  border: 1.5px dashed rgba(255, 122, 89, 0.4);
}

.btn-copy {
  padding: 0.8rem 1.15rem;
  background: var(--blue);
  color: var(--white);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s, transform 0.2s;
}

.btn-copy:hover {
  background: var(--blue-deep);
  transform: translateY(-1px);
}

.btn-copy.copied {
  background: var(--leaf);
}

/* Guide */
.guide {
  background: var(--white);
}

.tips {
  display: grid;
  gap: 0.85rem;
  max-width: 44em;
}

.tips li {
  padding: 1.15rem 1.25rem 1.15rem 1.35rem;
  background: var(--sky);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--sun-deep);
  color: var(--ink-soft);
}

.tips strong {
  color: var(--ink);
}

.tip-foot {
  margin: 1.75rem 0 0;
  max-width: 44em;
  font-size: 0.9rem;
  color: var(--ink-mute);
  padding: 0.85rem 1.15rem;
  background: var(--mint);
  border-radius: var(--radius-sm);
}

/* Gallery */
.gallery {
  background: linear-gradient(180deg, var(--sky-mid), var(--sky));
}

.film-stage {
  margin: 0 0 1.15rem;
}

.film-stage img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: 0 14px 40px rgba(42, 126, 179, 0.18);
  transition: opacity 0.18s ease;
}

.film-stage figcaption {
  margin-top: 0.9rem;
  font-size: 0.925rem;
  color: var(--ink-soft);
  text-align: center;
}

.film-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.65rem;
}

.film-shot {
  padding: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  opacity: 0.55;
  border: 2px solid transparent;
  transition: opacity 0.2s, border-color 0.2s, transform 0.2s;
}

.film-shot:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

.film-shot.is-active {
  opacity: 1;
  border-color: var(--sun-deep);
  box-shadow: 0 4px 14px rgba(240, 184, 32, 0.3);
}

.film-shot img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* Reviews */
.reviews {
  background: var(--mint);
}

.quotes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.quotes blockquote {
  margin: 0;
  padding: 1.35rem 1.5rem;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid rgba(76, 175, 110, 0.12);
}

.quotes p {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.quotes cite {
  font-style: normal;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blue);
}

/* FAQ */
.faq {
  background: var(--white);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  padding: 1.15rem 2rem 1.15rem 0;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
  transition: color 0.2s;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--blue);
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list summary:hover {
  color: var(--blue-deep);
}

.faq-list p {
  margin: 0 0 1.1rem;
  padding-right: 1.5rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Download */
.download {
  padding: 5rem 0;
  background: linear-gradient(145deg, #3b9fd9 0%, #4caf6e 55%, #f0b820 130%);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.15), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255, 213, 74, 0.2), transparent 40%);
  pointer-events: none;
}

.download-inner {
  position: relative;
}

.download h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  letter-spacing: 0.05em;
  color: var(--white);
}

.download-lead {
  margin: 0 0 1.85rem;
  color: rgba(255, 255, 255, 0.88);
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  margin-bottom: 1.15rem;
}

.download .btn-solid {
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.15);
}

.download-note {
  margin: 0;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

/* Footer */
.site-footer {
  padding: 2.5rem 0;
  background: #2a5a78;
  color: rgba(255, 255, 255, 0.65);
  text-align: center;
}

.footer-brand {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  color: var(--white);
}

.footer-copy {
  margin: 0 0 0.4rem;
  font-size: 0.875rem;
}

.footer-tip {
  margin: 0;
  font-size: 0.775rem;
  color: rgba(255, 255, 255, 0.4);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }

/* Responsive */
@media (max-width: 960px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about .about-aside {
    display: none !important;
  }

  .chapter {
    grid-template-columns: 3rem 1fr;
    gap: 0.85rem 1.1rem;
  }

  .chapter-no {
    grid-row: 1;
  }

  .chapter-text {
    grid-column: 2;
    grid-row: 1;
  }

  .chapter-media {
    grid-column: 1 / -1;
    grid-row: 2;
  }

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

  .rail-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

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

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

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

@media (max-width: 760px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.35rem 1.25rem;
    background: rgba(232, 246, 253, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-cta {
    margin-top: 0.75rem;
    text-align: center;
    border-bottom: 0 !important;
  }

  .hero {
    min-height: min(92vh, 720px);
    min-height: min(92dvh, 720px);
  }

  .hero-veil {
    background:
      linear-gradient(180deg, rgba(30, 70, 100, 0.25) 0%, rgba(30, 70, 100, 0.4) 45%, rgba(30, 70, 100, 0.82) 100%);
  }

  .hero-brand {
    font-size: clamp(2.4rem, 12vw, 3.3rem);
  }

  .block {
    padding: 3.75rem 0;
  }

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

  .days .day:last-child {
    grid-column: 1 / -1;
  }

  .film-strip {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 0.5rem;
  }

  .film-shot {
    flex: 0 0 30%;
    scroll-snap-align: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-media img,
  .about-aside img {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .rail-panel {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }
}