:root {
    color-scheme: dark;
    --welcome-bg: #2f2e2d;
    --welcome-text: #f5f4f1;
    --welcome-muted: rgba(245, 244, 241, .64);
    --welcome-line: rgba(255, 255, 255, .12);
    --welcome-card: rgba(255, 255, 255, .07);
    --welcome-card-active: rgba(255, 255, 255, .14);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }

body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    background:
        radial-gradient(circle at 18% 12%, rgba(102, 80, 255, .18), transparent 32rem),
        radial-gradient(circle at 82% 82%, rgba(55, 196, 231, .12), transparent 30rem),
        var(--welcome-bg);
    color: var(--welcome-text);
    font-family: var(--font-body, system-ui, sans-serif);
}

.welcome-shell {
    width: min(100%, 760px);
    min-height: 100vh;
    min-height: 100dvh;
    margin: 0 auto;
    padding: max(20px, env(safe-area-inset-top)) 20px max(20px, env(safe-area-inset-bottom));
    display: grid;
    align-items: center;
}

.welcome-card {
    padding: clamp(28px, 5vw, 44px);
    border: 1px solid var(--welcome-line);
    border-radius: 32px;
    background: rgba(24, 23, 23, .52);
    box-shadow: 0 28px 80px rgba(0, 0, 0, .2);
    backdrop-filter: blur(24px) saturate(130%);
    -webkit-backdrop-filter: blur(24px) saturate(130%);
}

.language-form { margin: 0; }

.language-fieldset {
    margin: 0 0 clamp(26px, 4vw, 34px);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    border: 0;
}

.language-fieldset legend {
    width: auto;
    margin: 0;
    padding: 0;
    color: var(--welcome-muted);
    font-family: var(--font-ui, system-ui, sans-serif);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.language-options {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.language-option {
    min-width: 48px;
    min-height: 34px;
    padding: 0 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--welcome-line);
    border-radius: 999px;
    background: rgba(255, 255, 255, .045);
    cursor: pointer;
    transition: border-color .18s ease, background .18s ease, transform .18s ease;
}

.language-option:has(input:checked) {
    border-color: rgba(255, 255, 255, .42);
    background: var(--welcome-card-active);
}

.language-option:active { transform: scale(.98); }
.language-option input { position: absolute; opacity: 0; pointer-events: none; }

.language-code {
    display: block;
    font-family: var(--font-ui, system-ui, sans-serif);
    font-size: 9px;
    font-weight: 750;
    letter-spacing: .08em;
}

.language-name { display: none; }

.welcome-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin: 0 auto clamp(30px, 5vw, 42px);
    font-family: var(--font-ui, system-ui, sans-serif);
    font-size: clamp(20px, 3.4vw, 26px);
    font-weight: 750;
    letter-spacing: .18em;
    text-align: center;
}

.welcome-brand img {
    display: block;
    width: clamp(48px, 8vw, 62px);
    height: clamp(48px, 8vw, 62px);
    object-fit: contain;
}

.welcome-copy { text-align: left; }

.welcome-kicker {
    margin: 0 0 10px;
    color: var(--welcome-muted);
    font-family: var(--font-ui, system-ui, sans-serif);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .16em;
}

.welcome-copy h1 {
    margin: 0 0 20px;
    font-family: var(--font-ui, system-ui, sans-serif);
    font-size: clamp(20px, 4vw, 30px);
    line-height: 1.08;
    letter-spacing: -.02em;
    white-space: nowrap;
    text-transform: uppercase;
}

.welcome-copy p:not(.welcome-kicker) {
    margin: 0 0 14px;
    max-width: 620px;
    color: rgba(245, 244, 241, .82);
    font-size: clamp(14px, 2.2vw, 17px);
    line-height: 1.58;
}

.welcome-copy p:last-child { margin-bottom: 0; }

.language-hint {
    margin: clamp(22px, 4vw, 30px) 2px 14px;
    color: var(--welcome-muted);
    font-size: 11px;
    line-height: 1.5;
}

.continue-button {
    width: 100%;
    min-height: 52px;
    border: 1px solid rgba(255, 255, 255, .24);
    border-radius: 16px;
    background: rgba(255, 255, 255, .92);
    color: #292827;
    font-family: var(--font-ui, system-ui, sans-serif);
    font-size: 12px;
    font-weight: 750;
    letter-spacing: .04em;
    cursor: pointer;
}

.continue-button:focus-visible,
.language-option:focus-within {
    outline: 2px solid rgba(255, 255, 255, .86);
    outline-offset: 3px;
}

.welcome-disclaimer {
    margin: 22px 0 0;
    padding-top: 16px;
    border-top: 1px solid var(--welcome-line);
    color: var(--welcome-muted);
    font-size: 11px;
    line-height: 1.5;
}

@media (max-width: 560px) {
    .welcome-shell {
        align-items: start;
        padding: max(22px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom));
    }

    .welcome-card {
        width: 100%;
        padding: 24px 18px 22px;
        border-radius: 24px;
    }

    .language-fieldset {
        margin-bottom: 24px;
        gap: 8px;
    }

    .language-fieldset legend { font-size: 7.5px; }

    .language-option {
        min-width: 44px;
        min-height: 32px;
        padding: 0 10px;
    }

    .language-code { font-size: 8px; }

    .welcome-brand {
        gap: 11px;
        margin-bottom: 26px;
        font-size: 19px;
    }

    .welcome-brand img {
        width: 44px;
        height: 44px;
    }

    .welcome-kicker {
        margin-bottom: 8px;
        font-size: 8px;
    }

    .welcome-copy h1 {
        margin-bottom: 18px;
        font-size: clamp(15px, 4.45vw, 19px);
        line-height: 1.1;
        letter-spacing: -.01em;
    }

    .welcome-copy p:not(.welcome-kicker) {
        margin-bottom: 13px;
        font-size: 12.5px;
        line-height: 1.52;
    }

    .language-hint {
        margin: 20px 2px 12px;
        font-size: 9.5px;
        line-height: 1.45;
    }

    .continue-button {
        min-height: 48px;
        border-radius: 14px;
        font-size: 10px;
    }

    .welcome-disclaimer {
        margin-top: 18px;
        padding-top: 13px;
        font-size: 9px;
    }
}

@media (max-width: 390px) and (max-height: 760px) {
    .welcome-shell { padding-top: max(12px, env(safe-area-inset-top)); }
    .welcome-card { padding: 16px; }
    .language-fieldset { margin-bottom: 14px; }
    .language-option { min-height: 30px; }
    .welcome-brand { margin-bottom: 16px; font-size: 16px; }
    .welcome-brand img { width: 36px; height: 36px; }
    .welcome-copy h1 { margin-bottom: 12px; }
    .welcome-copy p:not(.welcome-kicker) { margin-bottom: 8px; font-size: 11.5px; line-height: 1.36; }
    .language-hint { margin: 12px 2px 8px; }
    .continue-button { min-height: 44px; }
    .welcome-disclaimer { margin-top: 10px; padding-top: 10px; }
}