@layer components {
  .guyu-quiz {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    padding: 1.5rem;
    min-block-size: 100dvh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background:
      radial-gradient(circle at 20% 12%, rgba(255, 255, 255, 0.42) 0%, rgba(255, 255, 255, 0) 18%),
      radial-gradient(circle at 80% 10%, rgba(255, 255, 255, 0.32) 0%, rgba(255, 255, 255, 0) 16%),
      linear-gradient(180deg, #d8efe3 0%, #bfdccc 42%, #98bda7 100%);
  }

  .guyu-quiz__rain {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
  }

  .guyu-quiz__rain::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 12% 14%, rgba(255, 255, 255, 0.85) 0 6%, rgba(255, 255, 255, 0) 7%),
      radial-gradient(circle at 32% 10%, rgba(255, 255, 255, 0.72) 0 7%, rgba(255, 255, 255, 0) 8%),
      radial-gradient(circle at 52% 15%, rgba(255, 255, 255, 0.82) 0 6%, rgba(255, 255, 255, 0) 7%),
      radial-gradient(circle at 74% 11%, rgba(255, 255, 255, 0.76) 0 7%, rgba(255, 255, 255, 0) 8%),
      radial-gradient(circle at 90% 16%, rgba(255, 255, 255, 0.72) 0 6%, rgba(255, 255, 255, 0) 7%),
      linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0));
    opacity: 0.6;
    filter: blur(18px);
    transform: translateY(-4%);
  }

  .guyu-quiz__raindrop {
    position: absolute;
    top: -8rem;
    width: 2px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(226, 245, 255, 0.9) 35%, rgba(190, 229, 243, 0.45) 100%);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.22);
    opacity: 0.72;
    transform: rotate(12deg);
    animation-name: guyu-raindrop-fall;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
  }

  @keyframes guyu-raindrop-fall {
    from {
      transform: translate3d(0, -8rem, 0) rotate(12deg);
    }
    to {
      transform: translate3d(-3rem, calc(100dvh + 10rem), 0) rotate(12deg);
    }
  }

  .guyu-quiz__phase {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 72rem;
  }

  .guyu-quiz:fullscreen {
    max-inline-size: none;
    block-size: 100dvb;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .guyu-quiz:fullscreen .guyu-quiz__phase {
    max-inline-size: 64rem;
    inline-size: 100%;
  }

  .guyu-quiz__phase:not([hidden]) {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .guyu-quiz__header {
    text-align: center;
    margin-block-end: 2rem;
  }

  .guyu-quiz__title {
    font-size: 4.5rem;
    font-weight: 900;
    color: #1B5E20;
    text-shadow:
      3px 3px 0 #FFD166,
      6px 6px 0 #06D6A0,
      9px 9px 0 rgba(0, 0, 0, 0.15);
    letter-spacing: 4px;
    margin-bottom: 0;
    transform: rotate(-2deg);
    animation: title-bounce 2s ease-in-out infinite;
  }

  @keyframes title-bounce {
    0%, 100% { transform: rotate(-2deg) translateY(0); }
    50% { transform: rotate(0deg) translateY(-8px); }
  }

  /* ===== QUIZ PHASE ===== */

  .guyu-quiz__stage {
    display: grid;
    gap: 2rem;
    justify-items: center;
    inline-size: 100%;
    max-inline-size: 64rem;
  }

  .guyu-quiz__question-card {
    inline-size: 100%;
    max-inline-size: 48rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 248, 225, 0.95) 100%);
    border: 6px solid #81C784;
    border-radius: 1.5rem;
    box-shadow:
      0 10px 0 #81C784,
      0 20px 40px rgba(0, 0, 0, 0.15);
    padding: 1.5rem 2rem;
    text-align: center;
    animation: card-enter 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

  @keyframes card-enter {
    0% { opacity: 0; transform: scale(0.9) translateY(20px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
  }

  .guyu-quiz__question-text {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .guyu-quiz__question-text .question-zh {
    font-size: 2rem;
    font-weight: 800;
    color: #1B5E20;
    line-height: 1.4;
  }

  /* Options Grid */
  .guyu-quiz__options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    inline-size: 100%;
    max-inline-size: 56rem;
  }

  /* For questions with 2 options (temperature quiz) */
  .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) {
    grid-template-columns: repeat(2, minmax(200px, 1fr));
    max-inline-size: 48rem;
  }

  .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) .guyu-quiz__option {
    min-height: 200px;
  }

  .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) .guyu-quiz__option-image {
    aspect-ratio: 4 / 3;
    min-height: 120px;
    max-height: 160px;
  }

  /* For questions with 3 options */
  .guyu-quiz__options:has(.guyu-quiz__option:nth-child(3):last-child) {
    grid-template-columns: repeat(3, minmax(240px, 1fr));
  }

  /* For questions with 4 options */
  .guyu-quiz__options:has(.guyu-quiz__option:nth-child(4):last-child) {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  /* ===== MULTI-SELECT OPTIONS (Q4) ===== */
  .guyu-quiz__options--multi .guyu-quiz__option {
    cursor: pointer;
  }

  .guyu-quiz__options--multi .guyu-quiz__option:hover:not(.guyu-quiz__option--selected):not(:disabled),
  .guyu-quiz__options--multi .guyu-quiz__option:focus-visible:not(.guyu-quiz__option--selected):not(:disabled) {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 14px 0 #388E3C, 0 0 20px rgba(56, 142, 60, 0.4), 0 0 0 4px #FFD166;
    outline: none;
  }

  /* Selected state for multi-select */
  .guyu-quiz__option--selected {
    border-color: #06D6A0;
    box-shadow: 0 8px 0 #06D6A0, 0 0 20px rgba(6, 214, 160, 0.3);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(200, 255, 230, 0.95) 100%);
  }

  .guyu-quiz__option--selected .guyu-quiz__option-label {
    border-top-color: #06D6A0;
    background: linear-gradient(135deg, rgba(200, 255, 230, 0.95) 0%, rgba(180, 255, 220, 0.95) 100%);
  }

  /* ===== NUMBER OPTIONS (Q1) - ONE ROW ===== */
  .guyu-quiz__options--numbers {
    grid-template-columns: repeat(6, 1fr) !important;
    gap: 1rem;
    max-inline-size: 100%;
  }

  .guyu-quiz__options--numbers .guyu-quiz__option {
    min-height: 180px;
    height: 180px;
    padding: 0;
    justify-content: center;
    align-items: center;
  }

  .guyu-quiz__options--numbers .option-number {
    font-size: 4.5rem;
    font-weight: 900;
    color: #1B5E20;
    line-height: 1;
    text-shadow: 3px 3px 0 #FFD166;
  }

  /* ===== OPTION CARD - BIRD QUIZ STYLE ===== */
  .guyu-quiz__option {
    position: relative;
    padding: 0;
    border: 5px solid #388E3C;
    border-radius: 1.25rem;
    background: rgba(255, 255, 255, 0.95);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow:
      0 8px 0 #388E3C,
      0 15px 30px rgba(0, 0, 0, 0.12);
    display: flex;
    flex-direction: column;
    min-height: 260px;
  }

  .guyu-quiz__option:hover:not(:disabled),
  .guyu-quiz__option:focus-visible:not(:disabled) {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 14px 0 #388E3C, 0 0 0 4px #FFD166;
    border-color: #81C784;
    outline: none;
  }

  .guyu-quiz__option:active:not(:disabled) {
    transform: translateY(6px);
    box-shadow: 0 2px 0 #388E3C;
  }

  .guyu-quiz__option:disabled,
  .guyu-quiz__option--disabled {
    cursor: default;
  }

  /* Big image at top - takes most space */
  .guyu-quiz__option-image {
    display: block;
    width: 100%;
    height: auto;
    min-height: 160px;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    object-position: center;
    padding: 0.5rem;
    background: linear-gradient(135deg, #FFF8E1 0%, #FFE5D9 100%);
    border-radius: 0.75rem 0.75rem 0 0;
    flex: 1 1 auto;
  }

  /* Label at bottom - separated from image */
  .guyu-quiz__option-label {
    padding: 1rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: #1B5E20;
    letter-spacing: 2px;
    line-height: 1.3;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 240, 245, 0.95) 100%);
    border-top: 4px solid #388E3C;
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Symbol overlay - centered on the card */
  .guyu-quiz__symbol {
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: white;
    border: 4px solid white;
    box-shadow: 0 6px 25px rgba(0,0,0,0.4);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 10;
  }

  .guyu-quiz__symbol--show {
    transform: translate(-50%, -50%) scale(1);
    animation: pop-in 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

  /* Correct option styling - green border and green label */
  .guyu-quiz__option--correct {
    border-color: #06D6A0;
    box-shadow: 0 8px 0 #06D6A0;
  }

  .guyu-quiz__option--correct .guyu-quiz__option-label {
    border-top-color: #06D6A0;
    background: linear-gradient(135deg, rgba(200, 255, 230, 0.95) 0%, rgba(180, 255, 220, 0.95) 100%);
  }

  .guyu-quiz__option--correct .guyu-quiz__symbol {
    background: linear-gradient(135deg, #06D6A0 0%, #04b88a 100%);
  }

  /* Wrong option styling - red border and red label */
  .guyu-quiz__option--wrong {
    border-color: #FF5A5F;
    box-shadow: 0 8px 0 #FF5A5F;
  }

  .guyu-quiz__option--wrong .guyu-quiz__option-label {
    border-top-color: #FF5A5F;
    background: linear-gradient(135deg, rgba(255, 220, 220, 0.95) 0%, rgba(255, 200, 200, 0.95) 100%);
  }

  .guyu-quiz__option--wrong .guyu-quiz__symbol {
    background: linear-gradient(135deg, #FF5A5F 0%, #e04a50 100%);
  }

  @keyframes pop-in {
    0% { transform: translate(-50%, -50%) scale(0); }
    60% { transform: translate(-50%, -50%) scale(1.2); }
    100% { transform: translate(-50%, -50%) scale(1); }
  }

  /* Confirm Button - Sky Blue for contrast */
  .guyu-quiz__confirm-btn {
    background: linear-gradient(135deg, #4FC3F7 0%, #039BE5 100%);
    color: white;
    font-size: 1.5rem;
    font-weight: 800;
    padding: 1.25rem 2.5rem;
    border: 4px solid white;
    border-radius: 3rem;
    box-shadow: 0 8px 0 #0277BD, 0 15px 30px rgba(3, 155, 229, 0.3);
    animation: fade-in-up 0.3s ease;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .guyu-quiz__confirm-btn:hover,
  .guyu-quiz__confirm-btn:focus-visible {
    transform: translateY(-4px);
    box-shadow: 0 12px 0 #0277BD, 0 20px 40px rgba(3, 155, 229, 0.4), 0 0 0 4px #FFD166;
    outline: none;
  }

  .guyu-quiz__confirm-btn:active {
    transform: translateY(6px);
    box-shadow: 0 2px 0 #0277BD;
  }

  /* Next Button - fun orange */
  .guyu-quiz__next-btn {
    background: linear-gradient(135deg, #FFB300 0%, #FF8F00 100%);
    color: white;
    font-size: 1.5rem;
    font-weight: 800;
    padding: 1.25rem 2.5rem;
    border: 4px solid white;
    border-radius: 3rem;
    box-shadow: 0 8px 0 #F57C00, 0 15px 30px rgba(255, 143, 0, 0.3);
    animation: fade-in-up 0.3s ease;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .guyu-quiz__next-btn:hover,
  .guyu-quiz__next-btn:focus-visible {
    transform: translateY(-4px);
    box-shadow: 0 12px 0 #F57C00, 0 20px 40px rgba(255, 143, 0, 0.4), 0 0 0 4px #FFD166;
    outline: none;
  }

  .guyu-quiz__next-btn:active {
    transform: translateY(6px);
    box-shadow: 0 2px 0 #F57C00;
  }

  @keyframes fade-in-up {
    from {
      opacity: 0;
      transform: translateY(10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Progress - fun styling */
  .guyu-quiz__progress {
    text-align: center;
    margin-block-start: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 248, 225, 0.9) 100%);
    padding: 0.75rem 1.5rem;
    border-radius: 3rem;
    border: 3px solid #FFD166;
    box-shadow: 0 4px 0 #FFD166;
  }

  .guyu-quiz__progress .progress-zh {
    font-size: 1rem;
    color: #1B5E20;
  }

  /* ===== COMPLETION PHASE ===== */
  .guyu-quiz__phase--complete {
    text-align: center;
  }

  .guyu-quiz__complete-content {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 248, 225, 0.95) 100%);
    border: 6px solid #FFD166;
    border-radius: 1.5rem;
    box-shadow:
      0 10px 0 #FFD166,
      0 20px 40px rgba(0, 0, 0, 0.15);
    padding: 3rem 4rem;
    animation: complete-appear 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

  @keyframes complete-appear {
    0% { opacity: 0; transform: scale(0.8) translateY(30px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
  }

  /* ===== RAINBOW ANIMATION ===== */
  .guyu-quiz__rainbow {
    position: relative;
    width: 240px;
    height: 120px;
    margin: 0 auto 1.5rem;
    overflow: visible;
    animation: rainbow-appear 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  }

  @keyframes rainbow-appear {
    0% {
      opacity: 0;
      transform: scale(0.5) translateY(30px);
    }
    100% {
      opacity: 1;
      transform: scale(1) translateY(0);
    }
  }

  .guyu-quiz__rainbow-arc {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 50% 50% 0 0;
    animation: rainbow-glow 2s ease-in-out infinite;
  }

  /* Half-circle rainbow with 30px thick bands */
  .guyu-quiz__rainbow-arc--red {
    width: 240px;
    height: 120px;
    background: linear-gradient(180deg, #FF5A5F 0%, #FF6B6B 100%);
    animation-delay: 0s;
    z-index: 1;
  }

  .guyu-quiz__rainbow-arc--orange {
    width: 210px;
    height: 105px;
    background: linear-gradient(180deg, #FF9F43 0%, #FFB347 100%);
    animation-delay: 0.1s;
    z-index: 2;
  }

  .guyu-quiz__rainbow-arc--yellow {
    width: 180px;
    height: 90px;
    background: linear-gradient(180deg, #FDCB6E 0%, #FFE66D 100%);
    animation-delay: 0.2s;
    z-index: 3;
  }

  .guyu-quiz__rainbow-arc--green {
    width: 150px;
    height: 75px;
    background: linear-gradient(180deg, #00B894 0%, #4ECDC4 100%);
    animation-delay: 0.3s;
    z-index: 4;
  }

  .guyu-quiz__rainbow-arc--blue {
    width: 120px;
    height: 60px;
    background: linear-gradient(180deg, #0984E3 0%, #74C7E3 100%);
    animation-delay: 0.4s;
    z-index: 5;
  }

  .guyu-quiz__rainbow-arc--purple {
    width: 90px;
    height: 45px;
    background: linear-gradient(180deg, #A29BFE 0%, #C7CEEA 100%);
    animation-delay: 0.5s;
    z-index: 6;
  }

  @keyframes rainbow-glow {
    0%, 100% {
      filter: brightness(1) drop-shadow(0 0 8px rgba(255, 255, 255, 0.6));
    }
    50% {
      filter: brightness(1.15) drop-shadow(0 0 16px rgba(255, 255, 255, 0.9));
    }
  }

  /* Inner white semicircle to complete rainbow */
  .guyu-quiz__rainbow::before {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 30px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 248, 225, 0.95) 100%);
    border-radius: 50% 50% 0 0;
    z-index: 7;
  }

  /* Clouds at rainbow base */
  .guyu-quiz__rainbow-clouds {
    position: absolute;
    bottom: -15px;
    left: -20px;
    right: -20px;
    display: flex;
    justify-content: space-between;
    z-index: 8;
    pointer-events: none;
  }

  .guyu-quiz__cloud {
    font-size: 2.25rem;
    animation: cloud-float 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.15));
  }

  .guyu-quiz__cloud--left {
    animation-delay: 0s;
  }

  .guyu-quiz__cloud--right {
    animation-delay: 1.5s;
  }

  @keyframes cloud-float {
    0%, 100% {
      transform: translateY(0) scale(1);
    }
    50% {
      transform: translateY(-8px) scale(1.1);
    }
  }

  .guyu-quiz__complete-title {
    font-size: 3rem;
    font-weight: 900;
    color: #1B5E20;
    text-shadow:
      2px 2px 0 #FFD166,
      4px 4px 0 #06D6A0;
    margin-bottom: 1rem;
  }

  .guyu-quiz__complete-message {
    font-size: 1.5rem;
    color: #1B5E20;
    margin-bottom: 2.5rem;
    font-weight: 700;
  }

  /* Restart button - fun teal */
  .guyu-quiz__restart-btn {
    background: linear-gradient(135deg, #06D6A0 0%, #04b88a 100%);
    color: white;
    font-size: 1.5rem;
    font-weight: 800;
    padding: 1.25rem 2.5rem;
    border: 4px solid white;
    border-radius: 3rem;
    box-shadow: 0 8px 0 #04b88a, 0 15px 30px rgba(6, 214, 160, 0.3);
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .guyu-quiz__restart-btn:hover,
  .guyu-quiz__restart-btn:focus-visible {
    transform: translateY(-4px);
    box-shadow: 0 12px 0 #04b88a, 0 20px 40px rgba(6, 214, 160, 0.4), 0 0 0 4px #FFD166;
    outline: none;
  }

  .guyu-quiz__restart-btn:active {
    transform: translateY(6px);
    box-shadow: 0 2px 0 #04b88a;
  }

  /* ===== FULLSCREEN OVERRIDES ===== */

  .guyu-quiz:fullscreen .guyu-quiz__title {
    font-size: 5.5rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__question-card {
    max-inline-size: 56rem;
    padding: 2rem 3rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__question-text .question-zh {
    font-size: 2.5rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__options {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    max-inline-size: 64rem;
  }

  /* Numbers in fullscreen */
  .guyu-quiz:fullscreen .guyu-quiz__options--numbers {
    gap: 1.5rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__options--numbers .guyu-quiz__option {
    min-height: 220px;
  }

  .guyu-quiz:fullscreen .guyu-quiz__options--numbers .option-number {
    font-size: 5.5rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) {
    grid-template-columns: repeat(2, minmax(240px, 1fr));
    max-inline-size: 56rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) .guyu-quiz__option {
    min-height: 240px;
  }

  .guyu-quiz:fullscreen .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) .guyu-quiz__option-image {
    aspect-ratio: 4 / 3;
    min-height: 140px;
    max-height: 180px;
  }

  .guyu-quiz:fullscreen .guyu-quiz__options:has(.guyu-quiz__option:nth-child(3):last-child) {
    grid-template-columns: repeat(3, minmax(300px, 1fr));
  }

  .guyu-quiz:fullscreen .guyu-quiz__options:has(.guyu-quiz__option:nth-child(4):last-child) {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .guyu-quiz:fullscreen .guyu-quiz__option {
    box-shadow: 0 10px 0 #388E3C;
    min-height: 320px;
  }

  .guyu-quiz:fullscreen .guyu-quiz__option:hover:not(:disabled) {
    box-shadow: 0 16px 0 #388E3C;
  }

  .guyu-quiz:fullscreen .guyu-quiz__option-image {
    aspect-ratio: 1 / 1;
    min-height: 220px;
    object-fit: contain;
    padding: 0.75rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__option-label {
    font-size: 1.75rem;
    padding: 1.25rem;
    line-height: 1.3;
  }

  .guyu-quiz:fullscreen .guyu-quiz__next-btn,
  .guyu-quiz:fullscreen .guyu-quiz__confirm-btn {
    font-size: 1.75rem;
    padding: 1.5rem 3rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__complete-title {
    font-size: 3.5rem;
  }

  .guyu-quiz:fullscreen .guyu-quiz__rainbow {
    width: 320px;
    height: 160px;
  }

  .guyu-quiz:fullscreen .guyu-quiz__rainbow-arc--red { width: 320px; height: 160px; }
  .guyu-quiz:fullscreen .guyu-quiz__rainbow-arc--orange { width: 280px; height: 140px; }
  .guyu-quiz:fullscreen .guyu-quiz__rainbow-arc--yellow { width: 240px; height: 120px; }
  .guyu-quiz:fullscreen .guyu-quiz__rainbow-arc--green { width: 200px; height: 100px; }
  .guyu-quiz:fullscreen .guyu-quiz__rainbow-arc--blue { width: 160px; height: 80px; }
  .guyu-quiz:fullscreen .guyu-quiz__rainbow-arc--purple { width: 120px; height: 60px; }

  .guyu-quiz:fullscreen .guyu-quiz__rainbow::before {
    width: 80px;
    height: 40px;
  }

  .guyu-quiz:fullscreen .guyu-quiz__cloud {
    font-size: 3rem;
  }

  /* ===== RESPONSIVE ===== */

  @media (max-width: 1024px) {
    /* Numbers on medium screens - 3x2 grid */
    .guyu-quiz__options--numbers {
      grid-template-columns: repeat(3, 1fr) !important;
    }

    .guyu-quiz__options--numbers .guyu-quiz__option {
      min-height: 140px;
      height: 140px;
    }

    .guyu-quiz__options--numbers .option-number {
      font-size: 3.5rem;
    }

    .guyu-quiz__option {
      min-height: 220px;
    }

    .guyu-quiz__option-image {
      min-height: 140px;
    }

    .guyu-quiz__option-label {
      font-size: 1.35rem;
      padding: 0.875rem;
    }

    /* 2-option temperature quiz on medium screens */
    .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) {
      grid-template-columns: repeat(2, minmax(180px, 1fr));
      max-inline-size: 48rem;
    }

    .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) .guyu-quiz__option {
      min-height: 180px;
    }

    .guyu-quiz__options:has(.guyu-quiz__option:nth-child(2):last-child) .guyu-quiz__option-image {
      min-height: 100px;
      max-height: 140px;
    }
  }

  @media (max-width: 42rem) {
    .guyu-quiz {
      padding: 1rem;
    }

    .guyu-quiz__rain::before {
      opacity: 0.45;
      filter: blur(14px);
    }

    .guyu-quiz__raindrop {
      width: 1.5px;
      opacity: 0.6;
    }

    .guyu-quiz__title {
      font-size: 2.75rem;
      text-shadow:
        2px 2px 0 #FFD166,
        4px 4px 0 #06D6A0;
    }

    .guyu-quiz__header {
      margin-block-end: 1.5rem;
    }

    .guyu-quiz__question-card {
      padding: 1.25rem 1.5rem;
      border-width: 4px;
      box-shadow: 0 6px 0 #81C784, 0 12px 24px rgba(0, 0, 0, 0.12);
    }

    .guyu-quiz__question-text .question-zh {
      font-size: 1.5rem;
    }

    .guyu-quiz__options {
      grid-template-columns: repeat(2, 1fr) !important;
      gap: 0.75rem;
    }

    /* Numbers on small screens - 3x2 grid */
    .guyu-quiz__options--numbers {
      grid-template-columns: repeat(3, 1fr) !important;
    }

    .guyu-quiz__options--numbers .guyu-quiz__option {
      min-height: 100px;
      height: 100px;
      padding: 0;
    }

    .guyu-quiz__options--numbers .option-number {
      font-size: 2.5rem;
      line-height: 1;
    }

    .guyu-quiz__option {
      border-width: 3px;
      box-shadow: 0 4px 0 #388E3C;
      border-radius: 1rem;
      min-height: 180px;
    }

    .guyu-quiz__option:hover:not(:disabled) {
      box-shadow: 0 6px 0 #388E3C;
    }

    .guyu-quiz__option-image {
      aspect-ratio: 1 / 1;
      min-height: 100px;
      object-fit: contain;
      padding: 0.375rem;
    }

    .guyu-quiz__option-label {
      padding: 0.75rem;
      font-size: 1.1rem;
      line-height: 1.2;
      letter-spacing: 1px;
      border-top-width: 2px;
    }

    .guyu-quiz__symbol {
      width: 3.5rem;
      height: 3.5rem;
      font-size: 1.75rem;
      border-width: 2px;
    }

    .guyu-quiz__next-btn,
    .guyu-quiz__confirm-btn {
      font-size: 1.1rem;
      padding: 0.875rem 1.75rem;
    }

    .guyu-quiz__progress {
      padding: 0.5rem 1rem;
    }

    .guyu-quiz__complete-content {
      padding: 1.5rem 2rem;
      border-width: 4px;
    }

    .guyu-quiz__rainbow {
      width: 180px;
      height: 90px;
    }

    .guyu-quiz__rainbow-arc--red { width: 180px; height: 90px; }
    .guyu-quiz__rainbow-arc--orange { width: 157px; height: 78px; }
    .guyu-quiz__rainbow-arc--yellow { width: 135px; height: 67px; }
    .guyu-quiz__rainbow-arc--green { width: 112px; height: 56px; }
    .guyu-quiz__rainbow-arc--blue { width: 90px; height: 45px; }
    .guyu-quiz__rainbow-arc--purple { width: 67px; height: 33px; }

    .guyu-quiz__rainbow::before {
      width: 45px;
      height: 22px;
    }

    .guyu-quiz__rainbow-clouds {
      left: -15px;
      right: -15px;
    }

    .guyu-quiz__cloud {
      font-size: 1.75rem;
    }

    .guyu-quiz__complete-title {
      font-size: 1.75rem;
    }

    .guyu-quiz__complete-message {
      font-size: 1.1rem;
    }

    .guyu-quiz__restart-btn {
      font-size: 1.1rem;
      padding: 0.875rem 1.75rem;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .guyu-quiz__raindrop,
    .guyu-quiz__title,
    .guyu-quiz__question-card,
    .guyu-quiz__complete-content,
    .guyu-quiz__rainbow,
    .guyu-quiz__rainbow-arc,
    .guyu-quiz__cloud {
      animation: none;
    }
  }
}