.razv-ai-page {
    /*--razv-bg: #fff8ec;*/
    --razv-card: rgba(255, 255, 255, 0.78);
    --razv-card-strong: rgba(255, 255, 255, 0.94);
    --razv-text: #28263f;
    --razv-muted: #6d6884;
    --razv-primary: #7c5cff;
    --razv-pink: #ff6bcb;
    --razv-yellow: #ffd76d;
    --razv-green: #34d399;
    --razv-red: #fb7185;
    --razv-border: rgba(124, 92, 255, 0.18);
    --razv-shadow: 0 24px 70px rgba(80, 64, 140, 0.16);

    color: var(--razv-text);
    background:
        radial-gradient(circle at 10% 10%, rgba(255, 215, 109, 0.36), transparent 28%),
        radial-gradient(circle at 90% 16%, rgba(255, 107, 203, 0.18), transparent 30%),
        radial-gradient(circle at 50% 95%, rgba(52, 211, 153, 0.18), transparent 30%),
        var(--razv-bg);
    overflow: hidden;
}

.razv-ai-container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.razv-ai-hero {
    padding: clamp(36px, 6vw, 84px) 0 34px;
}

.razv-ai-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 390px;
    gap: clamp(24px, 5vw, 58px);
    align-items: center;
}

.razv-ai-badge {
    display: inline-flex;
    padding: 9px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--razv-primary);
    border: 1px solid var(--razv-border);
    font-size: 15px;
    font-weight: 900;
    box-shadow: 0 12px 30px rgba(80, 64, 140, 0.08);
}

.razv-ai-hero h1 {
    margin: 20px 0 16px;
    font-size: clamp(40px, 7vw, 76px);
    line-height: 0.96;
    letter-spacing: -0.06em;
}

.razv-ai-hero p {
    max-width: 720px;
    margin: 0;
    color: var(--razv-muted);
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.55;
}

.razv-ai-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.razv-ai-btn,
.razv-ai-btn:visited {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border: 0;
    border-radius: 999px;
    background: #ffffff;
    color: var(--razv-text);
    font-size: 16px;
    font-weight: 900;
    text-decoration: none;
    cursor: pointer;
    box-shadow: 0 12px 30px rgba(80, 64, 140, 0.1);
}

.razv-ai-btn--main {
    background: linear-gradient(135deg, var(--razv-primary), var(--razv-pink));
    color: #ffffff !important;
}

.razv-ai-hero-card {
    border: 1px solid var(--razv-border);
    border-radius: 34px;
    background: var(--razv-card);
    padding: 26px;
    box-shadow: var(--razv-shadow);
    backdrop-filter: blur(18px);
}

.razv-ai-hero-card__icon {
    display: grid;
    place-items: center;
    width: 70px;
    height: 70px;
    border-radius: 24px;
    background: #ffffff;
    font-size: 34px;
    box-shadow: 0 12px 28px rgba(80, 64, 140, 0.12);
}

.razv-ai-hero-card h2 {
    margin: 18px 0 8px;
    font-size: 28px;
    letter-spacing: -0.04em;
}

.razv-ai-hero-card p {
    margin: 0;
    color: var(--razv-muted);
    font-size: 16px;
    line-height: 1.6;
}

.razv-ai-fast,
.razv-ai-work,
.razv-ai-info,
.razv-ai-faq {
    padding: 28px 0;
}

.razv-ai-fast h2,
.razv-ai-info h2,
.razv-ai-faq h2 {
    margin: 0 0 8px;
    font-size: clamp(28px, 4vw, 44px);
    letter-spacing: -0.05em;
}

.razv-ai-fast p {
    margin: 0 0 18px;
    color: var(--razv-muted);
    font-size: 17px;
}

.razv-ai-fast__grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
}

.razv-ai-fast__grid button {
    min-height: 58px;
    border: 1px solid var(--razv-border);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--razv-text);
    font-size: 16px;
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 12px 30px rgba(80, 64, 140, 0.08);
}

.razv-ai-work__grid {
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
}

.razv-ai-panel,
.razv-ai-empty,
.razv-ai-result,
.razv-ai-info article,
.razv-ai-faq details {
    border: 1px solid var(--razv-border);
    border-radius: 30px;
    background: var(--razv-card-strong);
    box-shadow: 0 18px 52px rgba(80, 64, 140, 0.12);
    backdrop-filter: blur(18px);
}

.razv-ai-panel {
    padding: 24px;
    position: sticky;
    top: 96px;
}

.razv-ai-panel h2 {
    margin: 0 0 8px;
    font-size: 28px;
    letter-spacing: -0.04em;
}

.razv-ai-panel__lead {
    margin: 0 0 18px;
    color: var(--razv-muted);
    font-size: 15px;
    line-height: 1.5;
}

.razv-ai-form {
    display: grid;
    gap: 14px;
}

.razv-ai-field {
    display: grid;
    gap: 7px;
}

.razv-ai-field span {
    color: var(--razv-text);
    font-size: 14px;
    font-weight: 900;
}

.razv-ai-field select {
    width: 100%;
    min-height: 50px;
    border: 1px solid rgba(124, 92, 255, 0.22);
    border-radius: 17px;
    background: #ffffff;
    color: var(--razv-text);
    font-size: 16px;
    font-weight: 800;
    padding: 0 14px;
    outline: none;
}

.razv-ai-submit {
    min-height: 56px;
    border: 0;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--razv-primary), var(--razv-pink));
    color: #ffffff;
    font-size: 17px;
    font-weight: 950;
    cursor: pointer;
    box-shadow: 0 16px 34px rgba(124, 92, 255, 0.28);
}

.razv-ai-submit:disabled {
    opacity: 0.75;
    cursor: wait;
}

.razv-ai-empty {
    padding: clamp(28px, 5vw, 56px);
    text-align: center;
}

.razv-ai-empty__icon {
    font-size: 58px;
}

.razv-ai-empty h2 {
    margin: 14px 0 8px;
    font-size: clamp(26px, 4vw, 40px);
    letter-spacing: -0.045em;
}

.razv-ai-empty p {
    margin: 0;
    color: var(--razv-muted);
    font-size: 17px;
}

.razv-ai-result {
    padding: 24px;
}

.razv-ai-result__head {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: flex-start;
    margin-bottom: 18px;
}

.razv-ai-result__label {
    color: var(--razv-primary);
    font-size: 13px;
    font-weight: 950;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.razv-ai-result h2 {
    margin: 6px 0 6px;
    font-size: clamp(26px, 4vw, 40px);
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.razv-ai-result p {
    margin: 0;
    color: var(--razv-muted);
    font-size: 16px;
    line-height: 1.55;
}

.razv-ai-result__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
    padding: 25px 0 0;
}

.razv-ai-result__actions button {
    min-height: 42px;
    border: 1px solid rgba(124, 92, 255, 0.2);
    border-radius: 999px;
    background: #ffffff;
    color: var(--razv-text);
    padding: 0 15px;
    font-size: 14px;
    font-weight: 900;
    cursor: pointer;
}

.razv-ai-score {
    margin: 0 0 16px;
    padding: 14px 16px;
    border-radius: 20px;
    background: rgba(255, 215, 109, 0.34);
    color: var(--razv-text);
    font-size: 18px;
    font-weight: 950;
}

.razv-ai-exercises {
    display: grid;
    gap: 14px;
}

.razv-ai-exercise {
    display: grid;
    grid-template-columns: 46px 1fr;
    gap: 14px;
    padding: 18px;
    border: 1px solid rgba(124, 92, 255, 0.14);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.68);
}

.razv-ai-exercise.is-right {
    border-color: rgba(52, 211, 153, 0.7);
    background: rgba(52, 211, 153, 0.12);
}

.razv-ai-exercise.is-wrong {
    border-color: rgba(251, 113, 133, 0.65);
    background: rgba(251, 113, 133, 0.1);
}

.razv-ai-exercise__num {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--razv-primary), var(--razv-pink));
    color: #ffffff;
    font-size: 20px;
    font-weight: 950;
}

.razv-ai-exercise__body h3 {
    margin: 0 0 12px;
    font-size: 20px;
    line-height: 1.35;
    letter-spacing: -0.02em;
}

.razv-ai-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.razv-ai-option {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 46px;
    padding: 10px 12px;
    border: 1px solid rgba(124, 92, 255, 0.16);
    border-radius: 16px;
    background: #ffffff;
    cursor: pointer;
    font-size: 16px;
    font-weight: 850;
}

.razv-ai-option input {
    width: 18px;
    height: 18px;
    accent-color: var(--razv-primary);
}

.razv-ai-hint {
    margin: 12px 0 0 !important;
    color: var(--razv-muted) !important;
    font-size: 14px !important;
}

.razv-ai-medal {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 16px;
    align-items: center;
    margin-top: 20px;
    padding: 20px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(255, 215, 109, 0.44), rgba(255, 107, 203, 0.16));
    border: 1px solid rgba(255, 215, 109, 0.62);
}

.razv-ai-medal__icon {
    display: grid;
    place-items: center;
    width: 62px;
    height: 62px;
    border-radius: 22px;
    background: #ffffff;
    font-size: 34px;
}

.razv-ai-medal h3 {
    margin: 0 0 5px;
    font-size: 22px;
}

.razv-ai-medal p {
    margin: 0;
}

.razv-ai-info__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.razv-ai-info article,
.razv-ai-faq details {
    padding: 22px;
}

.razv-ai-info h3 {
    margin: 0 0 8px;
    font-size: 20px;
}

.razv-ai-info p,
.razv-ai-faq p {
    margin: 0;
    color: var(--razv-muted);
    font-size: 15px;
    line-height: 1.6;
}

.razv-ai-faq details {
    margin-top: 12px;
}

.razv-ai-faq summary {
    cursor: pointer;
    font-size: 17px;
    font-weight: 950;
}

.razv-ai-faq details p {
    margin-top: 10px;
}

@media (max-width: 980px) {
    .razv-ai-hero__grid,
    .razv-ai-work__grid {
        grid-template-columns: 1fr;
    }

    .razv-ai-panel {
        position: static;
    }

    .razv-ai-fast__grid,
    .razv-ai-info__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 620px) {
    .razv-ai-container {
        width: min(100% - 22px, 1180px);
    }

    .razv-ai-hero {
        padding-top: 28px;
    }

    .razv-ai-fast__grid,
    .razv-ai-info__grid,
    .razv-ai-options {
        grid-template-columns: 1fr;
    }

    .razv-ai-result__head {
        display: grid;
    }

    .razv-ai-result__actions {
        justify-content: stretch;
    }

    .razv-ai-result__actions button {
        flex: 1 1 auto;
    }

    .razv-ai-exercise {
        grid-template-columns: 1fr;
    }
}

@media print {
    body * {
        visibility: hidden;
    }

    .razv-ai-result,
    .razv-ai-result * {
        visibility: visible;
    }

    .razv-ai-result {
        position: absolute;
        inset: 0;
        box-shadow: none;
        border: 0;
    }

    .razv-ai-result__actions {
        display: none;
    }
}

/* Stage 2 additions */
.razv-ai-fast__grid--stage2 {
    grid-template-columns: repeat(7, minmax(0, 1fr));
}

.razv-ai-info__grid--stage2 {
    grid-template-columns: repeat(3, 1fr);
}

.razv-ai-section-cards {
    padding: 28px 0;
}

.razv-ai-section-cards__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 18px;
}

.razv-ai-section-cards h2 {
    margin: 0 0 8px;
    font-size: clamp(28px, 4vw, 44px);
    letter-spacing: -0.05em;
}

.razv-ai-section-cards p {
    margin: 0;
    color: var(--razv-muted);
    font-size: 17px;
    line-height: 1.55;
}

.razv-ai-card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.razv-ai-card-link,
.razv-ai-card-link:visited {
    display: grid;
    gap: 10px;
    min-height: 190px;
    padding: 22px;
    border: 1px solid var(--razv-border);
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--razv-text);
    text-decoration: none;
    box-shadow: 0 18px 52px rgba(80, 64, 140, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.razv-ai-card-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 24px 60px rgba(80, 64, 140, 0.14);
}

.razv-ai-card-link__icon {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    border-radius: 20px;
    background: #ffffff;
    font-size: 30px;
}

.razv-ai-card-link h3 {
    margin: 0;
    font-size: 23px;
    letter-spacing: -0.035em;
}

.razv-ai-card-link p {
    margin: 0;
    color: var(--razv-muted);
    font-size: 15px;
    line-height: 1.55;
}

.razv-ai-card-link__more {
    align-self: end;
    color: var(--razv-primary);
    font-size: 15px;
    font-weight: 950;
}

.razv-ai-text-block {
    padding: 28px 0 44px;
}

.razv-ai-text-block__inner {
    border: 1px solid var(--razv-border);
    border-radius: 34px;
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 18px 52px rgba(80, 64, 140, 0.1);
    padding: clamp(24px, 4vw, 38px);
}

.razv-ai-text-block h2 {
    margin: 0 0 14px;
    font-size: clamp(26px, 4vw, 42px);
    letter-spacing: -0.05em;
}

.razv-ai-text-block p {
    margin: 0 0 14px;
    color: var(--razv-muted);
    font-size: 17px;
    line-height: 1.7;
}

.razv-ai-text-block p:last-child {
    margin-bottom: 0;
}

@media (max-width: 1100px) {
    .razv-ai-fast__grid--stage2 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 980px) {
    .razv-ai-info__grid--stage2,
    .razv-ai-card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .razv-ai-fast__grid--stage2,
    .razv-ai-info__grid--stage2,
    .razv-ai-card-grid {
        grid-template-columns: 1fr;
    }

    .razv-ai-section-cards__head {
        display: grid;
    }
}

/* Stage 3: mini-games */
.razv-ai-mini-stats {
    margin-top: 16px;
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    background: rgba(255,255,255,.82);
    color: var(--razv-primary);
    font-weight: 950;
    font-size: 14px;
}

.razv-ai-fast__grid--stage3 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.razv-ai-info__grid--stage3 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.razv-ai-progress-card {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 16px;
    align-items: center;
    margin: 0 0 16px;
    padding: 16px;
    border-radius: 22px;
    background: rgba(124, 92, 255, 0.08);
    border: 1px solid rgba(124, 92, 255, 0.14);
}

.razv-ai-progress-card strong {
    display: block;
    color: var(--razv-text);
    font-size: 22px;
    line-height: 1.1;
}

.razv-ai-progress-card span {
    display: block;
    color: var(--razv-muted);
    font-size: 13px;
    font-weight: 800;
}

.razv-ai-progress-line {
    height: 12px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(255,255,255,.9);
}

.razv-ai-progress-line i {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--razv-primary), var(--razv-pink));
    transition: width .25s ease;
}

.razv-ai-exercise--game {
    position: relative;
}

.razv-ai-game-label {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    min-height: 34px;
    margin: 0 0 12px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(124, 92, 255, 0.1);
    color: var(--razv-primary);
    font-size: 13px;
    font-weight: 950;
}

.razv-ai-visual {
    margin: 0 0 12px;
    padding: 18px;
    border-radius: 22px;
    background: #fff8ec;
    border: 1px dashed rgba(124, 92, 255, 0.22);
    color: var(--razv-text);
    font-size: clamp(28px, 5vw, 44px);
    line-height: 1.35;
    letter-spacing: 0.02em;
    text-align: center;
}

.razv-ai-options--cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.razv-ai-option--card {
    position: relative;
    min-height: 56px;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}

.razv-ai-option--card:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(80,64,140,.08);
}

.razv-ai-option--card.is-selected {
    border-color: rgba(124, 92, 255, .55);
    background: rgba(124, 92, 255, .08);
}

.razv-ai-option--card.is-correct {
    border-color: rgba(52, 211, 153, .75);
    background: rgba(52, 211, 153, .16);
}

.razv-ai-option--card.is-bad {
    border-color: rgba(251, 113, 133, .75);
    background: rgba(251, 113, 133, .14);
}

@media (max-width: 980px) {
    .razv-ai-fast__grid--stage3,
    .razv-ai-info__grid--stage3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .razv-ai-fast__grid--stage3,
    .razv-ai-info__grid--stage3,
    .razv-ai-options--cards,
    .razv-ai-progress-card {
        grid-template-columns: 1fr;
    }

    .razv-ai-visual {
        font-size: 30px;
        padding: 14px;
    }
}

@media print {
    body * {
        visibility: hidden;
    }

    .razv-ai-result,
    .razv-ai-result * {
        visibility: visible;
    }

    .razv-ai-result {
        position: absolute;
        inset: 0;
        box-shadow: none;
        border: 0;
    }

    .razv-ai-result__actions,
    .razv-ai-panel,
    .razv-ai-fast,
    .razv-ai-hero,
    .razv-ai-info,
    .razv-ai-faq {
        display: none !important;
    }
}