:root {
    --cream: #FFF8EE;
    --peach: #FFD9B3;
    --orange: #FF8C42;
    --orange-dark: #E05C10;
    --brown: #8B4A2F;
    --green: #5DBB63;
    --green-dark: #3A8C40;
    --green-pale: #D4EDD6;
    --sky: #A8D8EA;
    --yellow: #FFD166;
    --yellow-dark: #C99A00;
    --text-dark: #2D1B0E;
    --text-mid: #6B3D22;
    --shadow: rgba(139, 74, 47, 0.15);
    --radius-lg: 24px;
    --radius-xl: 40px;
  }

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

  body {
    font-family: 'Nunito', 'ZCOOL XiaoWei', sans-serif;
    background-color: var(--cream);
    color: var(--text-dark);
    overflow-x: hidden;
  }

  /* ── NAV ── */
  nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 248, 238, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 2px solid var(--peach);
    padding: 0 max(24px, 5vw);
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
  }

  .nav-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    overflow: hidden; /* 超出容器隐藏 */
  }

  .nav-logo-icon img {
    display: block;
    width: 100%;      /* 图片宽度填满容器 */
    height: 100%;     /* 图片高度填满容器 */
    object-fit: cover; /* 保持比例填充，裁剪多余部分 */
    object-position: center; /* 图片居中显示 */
  }

  .nav-logo-text {
    font-size: 20px;
    font-weight: 900;
    color: var(--orange-dark);
    letter-spacing: -0.3px;
  }

  .nav-links {
    display: flex;
    gap: 8px;
    list-style: none;
  }

  .nav-links a {
    text-decoration: none;
    color: var(--text-mid);
    font-weight: 700;
    font-size: 14px;
    padding: 6px 14px;
    border-radius: 20px;
    transition: background 0.2s, color 0.2s;
  }

  .nav-links a:hover {
    background: var(--peach);
    color: var(--brown);
  }

  .nav-cta {
    background: var(--orange) !important;
    color: white !important;
    box-shadow: 0 3px 0 var(--orange-dark);
    transition: transform 0.15s, box-shadow 0.15s !important;
  }

  .nav-cta:hover {
    background: var(--orange-dark) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 0 #b04400 !important;
  }

  .nav-cta:active {
    transform: translateY(1px);
    box-shadow: 0 2px 0 var(--orange-dark) !important;
  }

  /* ── HERO ── */
  .hero {
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    padding: 60px max(24px, 5vw);
    position: relative;
    overflow: hidden;
    gap: 48px;

  }

  .hero::before {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 120px;
    background: var(--green-pale);
    clip-path: ellipse(60% 100% at 50% 100%);
    z-index: 0;
  }

  /* Floating decorations */
  .hero-deco {
    position: absolute;
    pointer-events: none;
    z-index: 0;
    font-size: 32px;
    animation: float 4s ease-in-out infinite;
    opacity: 0.5;
  }

  .hero-deco:nth-child(1) { top: 12%; left: 8%;  animation-delay: 0s; }
  .hero-deco:nth-child(2) { top: 20%; right: 12%; animation-delay: 0.8s; font-size: 24px; }
  .hero-deco:nth-child(3) { bottom: 22%; left: 5%; animation-delay: 1.5s; font-size: 22px; }
  .hero-deco:nth-child(4) { bottom: 28%; right: 8%; animation-delay: 0.4s; font-size: 28px; }
  .hero-deco:nth-child(5) { top: 45%; left: 2%;  animation-delay: 2s; font-size: 18px; }

  @keyframes float {
    0%, 100% { transform: translateY(0px) rotate(-4deg); }
    50% { transform: translateY(-12px) rotate(4deg); }
  }

  .hero-content {
    flex: 1;
    position: relative;
    left: 300px;
    z-index: 1;
    max-width: 520px;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--yellow);
    color: var(--yellow-dark);
    font-weight: 800;
    font-size: 13px;
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 0 var(--yellow-dark);
    letter-spacing: 0.3px;
  }

  .hero-title {
    font-size: clamp(42px, 7vw, 72px);
    font-weight: 900;
    line-height: 1.05;
    color: var(--text-dark);
    margin-bottom: 16px;
    letter-spacing: -1px;
  }

  .hero-title .accent {
    color: var(--orange);
    display: block;
  }

  .hero-subtitle {
    font-size: clamp(15px, 2.2vw, 18px);
    line-height: 1.7;
    color: var(--text-mid);
    margin-bottom: 36px;
    max-width: 420px;
  }

  .hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--orange);
    color: white;
    font-family: inherit;
    font-weight: 800;
    font-size: 16px;
    padding: 14px 28px;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 5px 0 var(--orange-dark);
    transition: transform 0.15s, box-shadow 0.15s;
    cursor: pointer;
    border: none;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 0 var(--orange-dark);
  }

  .btn-primary:active {
    transform: translateY(3px);
    box-shadow: 0 2px 0 var(--orange-dark);
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    color: var(--text-mid);
    font-family: inherit;
    font-weight: 800;
    font-size: 16px;
    padding: 14px 28px;
    border-radius: 50px;
    text-decoration: none;
    border: 2.5px solid var(--peach);
    box-shadow: 0 4px 0 var(--peach);
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
    cursor: pointer;
  }

  .btn-secondary:hover {
    border-color: var(--orange);
    box-shadow: 0 4px 0 var(--orange);
    transform: translateY(-1px);
  }

  .hero-visual {
    flex: 1;
    position: relative;
    left: 300px;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 500px;
  }

  /* Promo banner (16:9 placeholder) */
  .promo-banner {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #5DBB63 0%, #A8D8EA 40%, #FFD166 100%);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 0 rgba(93,187,99,0.35), 0 24px 40px rgba(0,0,0,0.12);
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 12px;
  }

  .promo-banner .promo-inner {
    text-align: center;
  }

  .promo-title-big {
    font-size: 36px;
    font-weight: 900;
    color: white;
    text-shadow: 0 3px 0 rgba(0,0,0,0.2);
    letter-spacing: -0.5px;
  }

  .promo-sub {
    font-size: 14px;
    color: rgba(255,255,255,0.85);
    font-weight: 700;
    margin-top: 4px;
  }

  .promo-moles {
    display: flex;
    gap: 16px;
    margin-top: 8px;
    font-size: 40px;
    animation: wobble 1.8s ease-in-out infinite;
  }

  @keyframes wobble {
    0%, 100% { transform: rotate(-6deg); }
    50% { transform: rotate(6deg); }
  }

  .promo-label {
    position: absolute;
    bottom: 12px;
    right: 14px;
    background: rgba(255,255,255,0.25);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    backdrop-filter: blur(4px);
  }

  /* ── STATS STRIP ── */
  .stats-strip {
    background: var(--orange);
    padding: 20px max(24px, 5vw);
    display: flex;
    justify-content: center;
    gap: clamp(24px, 6vw, 80px);
    flex-wrap: wrap;
  }

  .stat-item {
    text-align: center;
    color: white;
  }

  .stat-num {
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 900;
    letter-spacing: -0.5px;
  }

  .stat-label {
    font-size: 13px;
    font-weight: 700;
    opacity: 0.85;
    margin-top: 2px;
  }

  /* ── SECTION COMMON ── */
  section {
    padding: 80px max(24px, 5vw);
  }

  .section-tag {
    display: inline-block;
    background: var(--green-pale);
    color: var(--green-dark);
    font-weight: 800;
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
  }

  .section-title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 900;
    letter-spacing: -0.5px;
    line-height: 1.15;
    margin-bottom: 12px;
  }

  .section-desc {
    font-size: 16px;
    color: var(--text-mid);
    line-height: 1.7;
    max-width: 520px;
  }

  /* ── FEATURES ── */
  .features {
    background: white;
  }

  .features-header {
    text-align: center;
    margin-bottom: 56px;
  }

  .features-header .section-desc {
    margin: 0 auto;
  }

  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
  }

  .feature-card {
    background: var(--cream);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    border: 2px solid var(--peach);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    cursor: default;
  }

  .feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--shadow);
    border-color: var(--orange);
  }

  .feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 16px;
    box-shadow: 0 4px 0 rgba(0,0,0,0.08);
  }

  .feature-icon.orange { background: #FFECDE; }
  .feature-icon.green  { background: var(--green-pale); }
  .feature-icon.sky    { background: #D6EEF5; }
  .feature-icon.yellow { background: #FFF3CC; }

  .feature-card h3 {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text-dark);
  }

  .feature-card p {
    font-size: 14px;
    color: var(--text-mid);
    line-height: 1.65;
  }

  /* ── SCREENSHOTS ── */
  .screenshots {
    background: var(--cream);
  }

  .screenshots-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
  }

  .screenshots-text {
    max-width: 440px;
  }

  .screenshots-text .section-title { margin-bottom: 16px; }

  .screenshots-text .section-desc { margin-bottom: 28px; }

  .highlight-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .highlight-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-mid);
  }

  .check-dot {
    width: 22px;
    height: 22px;
    background: var(--green);
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    margin-top: 1px;
    box-shadow: 0 2px 0 var(--green-dark);
  }

  .screenshots-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 16px;
  }

  .screenshot-item {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 6px 18px var(--shadow);
    aspect-ratio: 9/16;
    background: var(--peach);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 8px;
    border: 3px solid white;
    transition: transform 0.2s;
  }

  .screenshot-item:hover { transform: scale(1.03); }



  .screenshot-label {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255,255,255,0.85);
    color: var(--brown);
    font-size: 11px;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 20px;
    white-space: nowrap;
    backdrop-filter: blur(4px);
  }


  .screenshot-placeholder-text {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-light);
    opacity: 0.7;
  }

  /* ── PROMO SECTION ── */
  .promo-section {
    background: white;
    padding: 80px max(24px, 5vw);
  }

  .promo-section-inner {
    max-width: 1100px;
    margin: 0 auto;
  }

  .promo-section-header {
    text-align: center;
    margin-bottom: 40px;
  }

  .promo-big-banner {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #3A8C40 0%, #5DBB63 30%, #A8D8EA 65%, #FFD166 100%);
    border-radius: var(--radius-xl);
    box-shadow: 0 16px 0 rgba(58,140,64,0.25), 0 32px 60px rgba(0,0,0,0.1);
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    padding: 40px;
  }

  .promo-big-title {
    font-size: clamp(28px, 6vw, 64px);
    font-weight: 900;
    color: white;
    text-align: center;
    text-shadow: 0 4px 0 rgba(0,0,0,0.15);
    letter-spacing: -1px;
  }

  .promo-big-sub {
    font-size: clamp(14px, 2vw, 20px);
    color: rgba(255,255,255,0.88);
    font-weight: 700;
    text-align: center;
  }

  .promo-big-moles {
    display: flex;
    gap: 20px;
    margin-top: 8px;
  }

  .mole-char {
    font-size: clamp(32px, 5vw, 56px);
    animation: mole-pop 2s ease-in-out infinite;
    filter: drop-shadow(0 4px 4px rgba(0,0,0,0.2));
  }

  .mole-char:nth-child(2) { animation-delay: 0.3s; }
  .mole-char:nth-child(3) { animation-delay: 0.6s; }
  .mole-char:nth-child(4) { animation-delay: 0.9s; }

  @keyframes mole-pop {
    0%, 100% { transform: translateY(8px) scaleY(0.9); }
    40%, 60% { transform: translateY(-6px) scaleY(1.05); }
  }

  /* ── DOWNLOAD / CTA ── */
  .cta-section {
    background: var(--green);
    padding: 80px max(24px, 5vw);
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    top: -40px; left: 50%;
    transform: translateX(-50%);
    width: 120%;
    height: 80px;
    background: white;
    border-radius: 0 0 50% 50%;
  }

  .cta-section::after {
    content: '';
    position: absolute;
    bottom: -40px; left: 50%;
    transform: translateX(-50%);
    width: 120%;
    height: 80px;
    background: white;
    border-radius: 50% 50% 0 0;
  }

  .cta-inner {
    position: relative;
    z-index: 1;
  }

  .cta-emoji { font-size: 56px; margin-bottom: 16px; display: block; }

  .cta-title {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 900;
    color: white;
    text-shadow: 0 3px 0 rgba(0,0,0,0.15);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
  }

  .cta-desc {
    font-size: 17px;
    color: rgba(255,255,255,0.88);
    font-weight: 600;
    margin-bottom: 36px;
  }

  .cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
  }

  .btn-store {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: white;
    color: var(--text-dark);
    font-family: inherit;
    font-weight: 800;
    font-size: 15px;
    padding: 14px 24px;
    border-radius: 50px;
    text-decoration: none;
    border: none;
    box-shadow: 0 5px 0 rgba(0,0,0,0.15);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
  }

  .btn-store:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 0 rgba(0,0,0,0.15);
  }

  .btn-store:active {
    transform: translateY(2px);
    box-shadow: 0 3px 0 rgba(0,0,0,0.15);
  }

  .btn-store-icon { font-size: 22px; }

  .btn-store-text { text-align: left; }
  .btn-store-text span { display: block; font-size: 11px; font-weight: 600; opacity: 0.6; }

  /* ── FOOTER ── */
  footer {
    background: var(--text-dark);
    padding: 48px max(24px, 5vw) 32px;
    color: #b08878;
  }

  .footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 32px;
    flex-wrap: wrap;
    padding-bottom: 32px;
    border-bottom: 1px solid #3d2015;
    margin-bottom: 24px;
  }

  .footer-brand .nav-logo-text { color: #FFD9B3; }
  .footer-brand p {
    font-size: 13px;
    margin-top: 8px;
    line-height: 1.6;
    max-width: 240px;
  }

  .footer-links h4 {
    font-size: 12px;
    font-weight: 800;
    color: #FFD9B3;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
  }

  .footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .footer-links a {
    color: #b08878;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s;
  }

  .footer-links a:hover { color: #FFD9B3; }

  .footer-copy {
    font-size: 12px;
    text-align: center;
    opacity: 0.5;
  }

  /* ── MOBILE MENU ── */
  .menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    font-size: 22px;
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 900px) {
    .screenshots-inner {
      grid-template-columns: 1fr;
    }
    .screenshots-text { max-width: 100%; }
    .screenshots-gallery { max-width: 420px; margin: 0 auto; }
  }

  @media (max-width: 768px) {
    .hero {
      flex-direction: column;
      padding-top: 40px;
      padding-bottom: 60px;
      min-height: auto;
      text-align: center;
    }

    .hero-content { max-width: 100%; }
    .hero-subtitle { margin: 0 auto 32px; }
    .hero-buttons { justify-content: center; }
    .hero-visual { width: 100%; max-width: 380px; }

    .nav-links { display: none; }

    .menu-toggle { display: flex; }

    .nav-links.open {
      display: flex;
      flex-direction: column;
      position: absolute;
      top: 64px; left: 0; right: 0;
      background: rgba(255,248,238,0.97);
      backdrop-filter: blur(12px);
      padding: 16px 24px 24px;
      border-bottom: 2px solid var(--peach);
      gap: 4px;
      box-shadow: 0 8px 24px var(--shadow);
    }

    .nav-links.open a {
      padding: 10px 16px;
      border-radius: 12px;
    }

    .stats-strip { gap: 20px; padding: 16px 24px; }

    section { padding: 56px max(20px, 4vw); }
  }

  @media (max-width: 500px) {
    .promo-banner { border-radius: 18px; }
    .promo-big-banner { border-radius: 24px; padding: 24px 20px; }
    .promo-big-title { letter-spacing: -0.5px; }
    .cta-section::before, .cta-section::after { display: none; }
    .screenshots-gallery { grid-template-columns: 1fr 1fr; max-width: 100%; }
  }

  /* Scroll reveal */
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

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

  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }