:root {
    --bg: #121212;
    --panel: #1b1b1b;
    --border: #2a2a2a;
    --divider: #262626;
    --text: #e0e0e0;
    --text-strong: #ffffff;
    --dim: #8a8a8a;
    --accent: #4dabf7;
    --bad: #ff6b6b;
    --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
    --font-mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text);
    max-width: 560px;
    margin: 0 auto;
    padding: 48px 20px;
    font-size: 16px;
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

.page-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-strong);
    margin-bottom: 28px;
}

.section-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-strong);
    margin: 24px 0 10px;
}

.card + .section-title {
    margin-top: 36px;
}

.note {
    font-size: 0.8rem;
    color: var(--dim);
    margin-top: 20px;
    line-height: 1.7;
    text-align: center;
}

.hero-label {
    text-align: center;
    font-size: 0.85rem;
    color: var(--dim);
    margin-bottom: 8px;
}

.hero {
    text-align: center;
    font-family: var(--font-mono);
    font-size: clamp(1.6rem, 6vw, 2.6rem);
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1.2;
    overflow-wrap: anywhere;
    margin-bottom: 28px;
}

.hero-unit {
    font-size: 0.45em;
    font-weight: 500;
    color: var(--dim);
    margin-left: 10px;
    letter-spacing: 0.03em;
}

.progress {
    height: 6px;
    background-color: var(--divider);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 28px;
}

.progress-fill {
    display: block;
    height: 100%;
    width: 0;
    background-color: var(--accent);
    border-radius: inherit;
    transition: width 300ms ease-out;
}

.card {
    background-color: var(--panel);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 4px 18px;
}

.row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--divider);
}

.row:last-child {
    border-bottom: none;
}

.row .label {
    font-size: 0.85rem;
    color: var(--dim);
    flex: none;
}

.row .value {
    font-size: 0.95rem;
    color: var(--text);
    text-align: right;
    overflow-wrap: anywhere;
}

.mono {
    font-family: var(--font-mono);
}

.row .value.mono {
    font-size: 0.9rem;
}

.row .value.primary {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-strong);
}

.loading {
    color: #666;
}

.row .value.native {
    color: var(--accent);
}

.row .value.non-native {
    color: var(--bad);
}

.actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.btn {
    display: inline-block;
    border: 1px solid #3a3a3a;
    border-radius: 8px;
    padding: 10px 22px;
    background-color: transparent;
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    cursor: pointer;
}

.btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: default;
}

.btn:disabled:hover {
    border-color: #3a3a3a;
    color: var(--text);
}

.back-link {
    display: block;
    text-align: center;
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--dim);
}

.back-link:hover {
    color: var(--accent);
    text-decoration: none;
}

#error {
    font-size: 0.85rem;
    color: var(--bad);
    text-align: center;
    margin-top: 16px;
}

#error:empty {
    display: none;
}

footer {
    font-size: 0.8rem;
    color: var(--dim);
    text-align: center;
    margin-top: 40px;
}

@media (max-width: 420px) {
    body {
        padding: 32px 16px;
    }
    .row {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    .row .value {
        text-align: left;
    }
}