:root {
    --bg: #0f0f10;
    --bg-elevated: #18181a;
    --bg-card: #1f1f22;
    --border: #2a2a2e;
    --text: #f5f5f5;
    --text-muted: #9a9a9a;
    --text-dim: #666;
    --accent: #4ade80;
    --accent-strong: #22c55e;
    --warning: #f59e0b;
    --critical: #ef4444;
    --info: #3b82f6;
    --radius: 8px;
    --radius-lg: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}
.header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header__brand {
    display: flex;
    align-items: baseline;
    gap: 8px;
    text-decoration: none;
    color: var(--text);
}
.header__brand-mark {
    font-weight: 700;
    letter-spacing: 1px;
}
.header__brand-tool {
    color: var(--accent);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 2px;
}
.header__back {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.15s;
}
.header__back:hover {
    color: var(--text);
}

/* Hero */
.hero {
    padding: 80px 0 60px;
    text-align: center;
}
.hero__tag {
    display: inline-block;
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 32px;
}
.hero__title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}
.hero__title-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero__subtitle {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 48px;
}
.audit-form {
    display: flex;
    gap: 12px;
    max-width: 560px;
    margin: 0 auto 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px;
    transition: border-color 0.2s;
}
.audit-form:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.1);
}
.audit-form__input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 0 14px;
}
.audit-form__prefix {
    color: var(--text-dim);
    font-size: 15px;
    margin-right: 4px;
    user-select: none;
}
.audit-form__input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text);
    font-size: 16px;
    padding: 14px 0;
    font-family: inherit;
}
.audit-form__input::placeholder {
    color: var(--text-dim);
}
.audit-form__btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    background: var(--accent);
    color: #0a0a0a;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    font-family: inherit;
}
.audit-form__btn:hover:not(:disabled) {
    background: var(--accent-strong);
}
.audit-form__btn:active:not(:disabled) {
    transform: scale(0.98);
}
.audit-form__btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.audit-form__btn svg {
    width: 16px;
    height: 16px;
}
.hero__trust {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    color: var(--text-dim);
    font-size: 13px;
}

@media (max-width: 600px) {
    .audit-form {
        flex-direction: column;
        gap: 6px;
    }
    .audit-form__input-wrapper { padding: 4px 14px; }
    .hero { padding: 48px 0 40px; }
    .hero__subtitle { font-size: 16px; margin-bottom: 32px; }
}

/* Loading */
.loading {
    padding: 80px 0;
}
.loading__inner {
    max-width: 520px;
    margin: 0 auto;
    text-align: center;
}
.loading__spinner {
    width: 64px;
    height: 64px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    margin: 0 auto 32px;
    animation: spin 0.9s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.loading__title {
    font-size: 24px;
    margin-bottom: 32px;
    font-weight: 600;
}
.loading__title span {
    color: var(--accent);
}
.loading__steps {
    list-style: none;
    text-align: left;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
}
.loading__step {
    padding: 12px 16px;
    color: var(--text-dim);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: color 0.3s;
}
.loading__step::before {
    content: '○';
    font-size: 18px;
    color: var(--text-dim);
}
.loading__step.is-active {
    color: var(--text);
}
.loading__step.is-active::before {
    content: '◉';
    color: var(--accent);
    animation: pulse 1.2s ease-in-out infinite;
}
.loading__step.is-done {
    color: var(--text-muted);
}
.loading__step.is-done::before {
    content: '●';
    color: var(--accent-strong);
    animation: none;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
.loading__hint {
    margin-top: 24px;
    color: var(--text-dim);
    font-size: 13px;
}

/* Result */
.result {
    padding: 60px 0;
}
.result__header {
    text-align: center;
    margin-bottom: 40px;
}
.result__tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(74, 222, 128, 0.15);
    color: var(--accent);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-radius: 999px;
    margin-bottom: 12px;
}
.result__hostname {
    font-size: 28px;
    font-weight: 600;
    word-break: break-all;
}
.result__score-card {
    background: linear-gradient(180deg, var(--bg-elevated) 0%, var(--bg-card) 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-bottom: 32px;
}
.result__score-main {
    text-align: center;
    margin-bottom: 32px;
}
.result__score-number {
    font-size: 96px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.04em;
    color: var(--accent);
}
.result__score-number.is-warning { color: var(--warning); }
.result__score-number.is-critical { color: var(--critical); }
.result__score-label {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 4px;
}
.result__score-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.subscore {
    text-align: center;
    padding: 16px 8px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius);
}
.subscore__value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1;
}
.subscore__label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-top: 6px;
}
.subscore__value.is-good { color: var(--accent); }
.subscore__value.is-mid { color: var(--warning); }
.subscore__value.is-bad { color: var(--critical); }
.subscore__value.is-na { color: var(--text-dim); }

@media (max-width: 600px) {
    .result__score-grid { grid-template-columns: repeat(2, 1fr); }
    .result__score-number { font-size: 72px; }
}

.result__quickwins {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-left: 4px solid var(--warning);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin-bottom: 32px;
}
.result__quickwins h3 {
    font-size: 18px;
    margin-bottom: 16px;
}
.quickwin {
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}
.quickwin:last-child { border-bottom: none; }
.quickwin__title {
    font-weight: 600;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.quickwin__badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}
.quickwin__badge.is-critical { background: var(--critical); color: #fff; }
.quickwin__badge.is-warning { background: var(--warning); color: #000; }
.quickwin__badge.is-info { background: var(--info); color: #fff; }
.quickwin__detail {
    font-size: 14px;
    color: var(--text-muted);
}

.result__lead-gate {
    background: linear-gradient(135deg, var(--bg-elevated), var(--bg-card));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-bottom: 32px;
}
.result__lead-title {
    font-size: 22px;
    margin-bottom: 12px;
}
.result__lead-text {
    color: var(--text-muted);
    margin-bottom: 24px;
}
.result__lead-text strong {
    color: var(--text);
}
.lead-form__row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}
@media (max-width: 600px) {
    .lead-form__row { grid-template-columns: 1fr; }
    .result__lead-gate { padding: 24px; }
}
.lead-form__field { display: flex; flex-direction: column; }
.lead-form__label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.lead-form__input {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 14px;
    color: var(--text);
    font-size: 15px;
    font-family: inherit;
    transition: border-color 0.15s;
}
.lead-form__input:focus {
    outline: none;
    border-color: var(--accent);
}
.lead-form__consent {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    margin: 16px 0;
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}
.lead-form__consent input {
    margin-top: 3px;
    accent-color: var(--accent);
}
.lead-form__consent a { color: var(--accent); }
.lead-form__btn {
    width: 100%;
    padding: 14px;
    background: var(--accent);
    color: #0a0a0a;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.15s;
    font-family: inherit;
}
.lead-form__btn:hover:not(:disabled) { background: var(--accent-strong); }
.lead-form__btn:disabled { opacity: 0.5; cursor: not-allowed; }
.lead-form__status {
    margin-top: 12px;
    text-align: center;
    font-size: 14px;
    min-height: 1em;
}
.lead-form__status.is-success { color: var(--accent); }
.lead-form__status.is-error { color: var(--critical); }

.result__cta {
    text-align: center;
    padding: 32px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}
.result__cta h3 { font-size: 22px; margin-bottom: 8px; }
.result__cta p { color: var(--text-muted); margin-bottom: 20px; }

.btn-primary {
    display: inline-block;
    padding: 12px 28px;
    background: var(--accent);
    color: #0a0a0a;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background 0.15s;
    border: none;
    cursor: pointer;
    font-size: 15px;
    font-family: inherit;
}
.btn-primary:hover { background: var(--accent-strong); }
.btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: border-color 0.15s, color 0.15s;
    font-family: inherit;
}
.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--text);
}

/* Error */
.error { padding: 80px 0; text-align: center; }
.error__inner { max-width: 480px; margin: 0 auto; }
.error h2 { font-size: 28px; margin-bottom: 12px; color: var(--critical); }
.error p { color: var(--text-muted); margin-bottom: 24px; }

/* Why */
.why {
    padding: 80px 0;
    border-top: 1px solid var(--border);
}
.section-title {
    font-size: 32px;
    text-align: center;
    margin-bottom: 48px;
    font-weight: 700;
}
.why__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}
.why__item {
    padding: 28px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.why__item h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--accent);
}
.why__item p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Footer */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-dim);
    font-size: 14px;
}
.footer a {
    color: var(--text-muted);
    text-decoration: none;
}
.footer a:hover { color: var(--text); }
.footer__legal { margin-top: 8px; font-size: 13px; }
.footer__legal a { margin: 0 8px; }