.ka-page {
    position: relative;
    touch-action: manipulation;
}

.ka-hero {
    border-radius: 16px;
    padding: 1.5rem;
    margin: 1.2rem 0 1.5rem;
    color: #fff;
    box-shadow: 0 12px 28px rgba(37, 53, 97, 0.22);
    overflow: hidden;
    position: relative;
}

.ka-theme-pilot .ka-hero {
    background: linear-gradient(135deg, #5b8bff, #4dc6ff);
}

.ka-theme-jump .ka-hero {
    background: linear-gradient(135deg, #ff7f50, #ffc356);
}

.ka-theme-treasure .ka-hero {
    background: linear-gradient(135deg, #00a6a6, #39d98a);
}

.ka-hero::before {
    content: "";
    position: absolute;
    top: -30px;
    right: -30px;
    width: 130px;
    height: 130px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.22);
}

.ka-hero-body {
    position: relative;
    z-index: 2;
}

.ka-tag {
    display: inline-block;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.22);
    font-weight: 700;
    font-size: 0.85rem;
}

.ka-hero h1 {
    color: #fff;
    margin-top: 0.8rem;
    margin-bottom: 0.6rem;
}

.ka-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.9rem 0 1rem;
}

.ka-tags span {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 0.35rem 0.7rem;
    font-weight: 600;
}

.ka-board {
    background: #fff;
    border-radius: 16px;
    border: 2px solid rgba(59, 129, 253, 0.14);
    padding: 1.1rem;
    box-shadow: 0 10px 28px rgba(32, 46, 81, 0.11);
}

.ka-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.6rem;
}

.ka-card {
    text-align: center;
    border-radius: 12px;
    padding: 0.65rem;
    background: #f4f8ff;
    border: 1px solid rgba(59, 129, 253, 0.18);
}

.ka-card small {
    display: block;
    color: #64739b;
    font-weight: 600;
}

.ka-card strong {
    color: #203663;
    font-size: 1.1rem;
}

.ka-stars {
    margin-top: 0.8rem;
    text-align: center;
}

.ka-stars i {
    color: #d4d7e4;
    margin: 0 0.2rem;
    font-size: 1.35rem;
    transition: transform 0.2s ease, color 0.2s ease;
}

.ka-stars i.is-on {
    color: #ffc74a;
    transform: scale(1.1);
}

.ka-progress {
    margin-top: 0.7rem;
    height: 11px;
    border-radius: 999px;
    background: #ecf2ff;
    overflow: hidden;
}

#kaProgressFill {
    width: 0;
    height: 100%;
    transition: width 0.35s ease;
}

.ka-theme-pilot #kaProgressFill {
    background: linear-gradient(90deg, #64d6ff, #4d83ff);
}

.ka-theme-jump #kaProgressFill {
    background: linear-gradient(90deg, #ffb36b, #ff7b4f);
}

.ka-theme-treasure #kaProgressFill {
    background: linear-gradient(90deg, #39d98a, #07a6b3);
}

.ka-round {
    text-align: center;
    color: #5f6f92;
    margin: 0.4rem 0 0.9rem;
    font-weight: 600;
}

.ka-track {
    position: relative;
    height: 56px;
    margin: 0.3rem 0 0.9rem;
    overflow: hidden;
}

.ka-track-line {
    position: absolute;
    left: 0;
    right: 0;
    top: 35px;
    height: 6px;
    border-radius: 999px;
    background: rgba(59, 129, 253, 0.25);
}

.ka-avatar {
    position: absolute;
    left: 8%;
    top: 8px;
    font-size: 1.8rem;
    transition: transform 0.25s ease;
}

.ka-obstacle {
    position: absolute;
    right: -20px;
    top: 20px;
    width: 18px;
    height: 18px;
    border-radius: 4px;
    animation: kaSlide 1.9s linear infinite;
}

.ka-theme-pilot .ka-obstacle {
    background: #dfe8ff;
    border-radius: 999px;
}

.ka-theme-jump .ka-obstacle {
    background: #8a5a44;
}

.ka-theme-treasure .ka-obstacle {
    background: #68d4ea;
    border-radius: 999px;
}

@keyframes kaSlide {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-120vw);
    }
}

.ka-avatar.jump {
    transform: translateY(-16px);
}

.ka-question {
    border-radius: 14px;
    border: 1px solid rgba(59, 129, 253, 0.2);
    background: #f9fbff;
    padding: 0.9rem;
    text-align: center;
}

.ka-question.good {
    animation: kaPop 0.45s ease;
}

.ka-question.bad {
    animation: kaShake 0.45s ease;
}

@keyframes kaPop {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes kaShake {
    0% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-6px);
    }
    50% {
        transform: translateX(6px);
    }
    100% {
        transform: translateX(0);
    }
}

#kaModeLabel {
    margin-bottom: 0.3rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: #2f67d0;
    text-transform: uppercase;
}

#kaPrompt {
    margin: 0;
    color: #223a6e;
    font-size: 1.25rem;
}

.ka-word {
    margin: 0.8rem auto 0.55rem;
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 2px solid rgba(59, 129, 253, 0.24);
    border-radius: 12px;
    min-width: 180px;
    background: #fff;
    color: #2d4477;
    font-size: 1.7rem;
    font-weight: 700;
}

#kaHint {
    color: #617194;
}

.ka-options {
    margin-top: 0.9rem;
    display: grid;
    gap: 0.65rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ka-option {
    border: 0;
    border-radius: 12px;
    padding: 0.7rem;
    font-size: 1rem;
    font-weight: 700;
    color: #22406f;
    background: #f1f6ff;
    cursor: pointer;
    box-shadow: 0 6px 14px rgba(39, 54, 92, 0.08);
    min-height: 56px;
    touch-action: manipulation;
}

.ka-option:hover:not(:disabled) {
    transform: translateY(-2px);
}

.ka-option:disabled {
    opacity: 0.9;
}

.ka-option.ok {
    background: #c9f4dd;
    color: #165b3c;
}

.ka-option.no {
    background: #ffd8de;
    color: #7f2234;
}

.ka-feedback {
    text-align: center;
    margin-top: 0.9rem;
    min-height: 1.7rem;
    font-weight: 700;
    color: #2d4477;
}

.ka-feedback.good {
    color: #1b7f4d;
}

.ka-feedback.bad {
    color: #ba334f;
}

.ka-summary {
    margin-top: 1rem;
    border: 2px solid rgba(59, 129, 253, 0.2);
}

.ka-summary h3 {
    margin-top: 0;
}

.ka-summary-stars {
    font-size: 1.5rem;
}

.ka-custom-words {
    margin-top: 1rem;
    border: 1px solid rgba(59, 129, 253, 0.2);
}

.ka-custom-status {
    min-height: 1.2rem;
    margin-top: 0.65rem;
    color: #244171;
    font-weight: 600;
}

.ka-seo-content {
    margin-top: 1rem;
    border: 1px solid rgba(59, 129, 253, 0.18);
}

.ka-settings-panel,
.ka-rewards-panel,
.ka-dashboard-panel {
    margin-top: 1rem;
    border: 1px solid rgba(59, 129, 253, 0.18);
}

.ka-touch-tip {
    color: #5f6e88;
    font-size: 0.95rem;
}

.ka-learner-status {
    margin-top: 0.45rem;
    color: #2a4080;
    font-size: 0.9rem;
    min-height: 1.2rem;
}

.ka-teacher-status {
    margin-top: 0.45rem;
    color: #2a4080;
    font-size: 0.9rem;
    min-height: 1.2rem;
}

.ka-skin-list,
.ka-badges-list,
.ka-level-map {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.ka-skin-btn {
    border: 2px solid rgba(59, 129, 253, 0.2);
    background: #f6faff;
    border-radius: 10px;
    padding: 0.45rem 0.6rem;
    font-size: 1.2rem;
    min-width: 52px;
    min-height: 52px;
    cursor: pointer;
    touch-action: manipulation;
}

.ka-skin-btn.is-selected {
    border-color: #3b81fd;
    box-shadow: 0 0 0 2px rgba(59, 129, 253, 0.15);
}

.ka-skin-btn.is-locked {
    opacity: 0.5;
    cursor: not-allowed;
}

.ka-badge-chip {
    border-radius: 999px;
    background: #eef4ff;
    border: 1px solid rgba(59, 129, 253, 0.2);
    padding: 0.35rem 0.65rem;
    font-size: 0.85rem;
    font-weight: 600;
}

.ka-badge-chip.is-new {
    background: #d5f8e6;
    border-color: #67e0a6;
}

.ka-level-node {
    border-radius: 10px;
    border: 1px solid rgba(59, 129, 253, 0.22);
    background: #f4f8ff;
    padding: 0.5rem 0.65rem;
    font-size: 0.82rem;
    font-weight: 700;
    color: #2a4080;
}

.ka-level-node.is-unlocked {
    background: #dff6ec;
    border-color: #67e0a6;
    color: #1d6a4a;
}

.ka-level-node.is-current {
    border-width: 2px;
    border-color: #3b81fd;
}

.ka-mini-stat {
    border: 1px solid rgba(59, 129, 253, 0.2);
    background: #f7fbff;
    border-radius: 12px;
    padding: 0.7rem;
    text-align: center;
}

.ka-mini-stat span {
    display: block;
    color: #61718f;
    font-size: 0.82rem;
    margin-bottom: 0.2rem;
}

.ka-mini-stat strong {
    color: #1f366d;
    font-size: 1.1rem;
}

.ka-other-games {
    margin-top: 1rem;
}

.ka-link-card {
    display: block;
    border-radius: 12px;
    padding: 0.8rem;
    font-weight: 700;
    background: #f4f8ff;
    border: 1px solid rgba(59, 129, 253, 0.16);
}

.ka-link-card:hover {
    text-decoration: none;
    background: #eaf2ff;
}

.ka-confetti {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.ka-confetti-piece {
    position: absolute;
    top: -15px;
    width: 8px;
    height: 12px;
    border-radius: 2px;
    animation: kaDrop linear forwards;
}

@keyframes kaDrop {
    from {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
    to {
        transform: translateY(480px) rotate(540deg);
        opacity: 0;
    }
}

@media (max-width: 768px) {
    .ka-options {
        grid-template-columns: 1fr;
    }
}