/* Hero */
.hero {
    padding: 40px 0 36px;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(37, 99, 235, 0.08), transparent),
        var(--bg);
}
.hero__grid {
    display: grid;
    grid-template-columns: 1fr minmax(300px, 420px);
    gap: 32px;
    align-items: start;
}
.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    margin-bottom: 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-soft);
    border-radius: 999px;
}
.hero__badge-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.hero h1 {
    margin: 0 0 12px;
    font-size: clamp(2rem, 4.5vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--text);
}
.hero__subtitle {
    margin: 0 0 16px;
    font-size: 1.125rem;
    font-weight: 600;
    color: #334155;
}
.hero__lead {
    margin: 0 0 28px;
    font-size: 1rem;
    color: var(--muted);
    line-height: 1.7;
    max-width: 36em;
}
.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

/* 查询可用地址 */
.mx-card {
    scroll-margin-top: calc(var(--header-h) + 16px);
    min-width: 0;
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.mx-card__head {
    margin-bottom: 14px;
}
.mx-card__title {
    margin: 0 0 6px;
    font-size: 1.0625rem;
    font-weight: 700;
    line-height: 1.45;
    letter-spacing: -0.01em;
    color: var(--text);
    word-break: keep-all;
}
.mx-card__desc {
    margin: 0;
    font-size: 13px;
    line-height: 1.5;
    color: var(--muted);
}
.mx-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.mx-row {
    display: flex;
    align-items: stretch;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.mx-row:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.mx-row input,
.mx-row select {
    border: 0;
    background: transparent;
    font-size: 14px;
    padding: 10px 12px;
    color: var(--text);
    outline: none;
}
.mx-row input { flex: 1; min-width: 0; }
.mx-row__at {
    display: flex;
    align-items: center;
    padding: 0 2px;
    font-size: 15px;
    font-weight: 600;
    color: #94a3b8;
    user-select: none;
    flex-shrink: 0;
}
.mx-row select {
    border-left: 1px solid var(--border);
    max-width: 48%;
    cursor: pointer;
    color: #334155;
}
.btn--block { width: 100%; }
.mx-hint {
    margin: 0;
    min-height: 1.2em;
    font-size: 12px;
    line-height: 1.4;
    color: var(--muted);
}
.mx-hint:empty { display: none; }
.mx-hint.ok { color: var(--ok); }
.mx-hint.err { color: var(--bad); }
.mx-empty {
    margin: 0;
    padding: 14px;
    text-align: center;
    font-size: 13px;
    color: var(--muted);
    border-radius: 8px;
    background: #f8fafc;
    border: 1px dashed var(--border);
}

/* Status bar */
.status-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px 24px;
    padding: 16px 20px;
    margin-bottom: 40px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.status-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}
.status-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.status-dot--ok { background: var(--ok); box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.2); }
.status-dot--bad { background: var(--bad); box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15); }
.status-label { font-weight: 600; color: var(--text); }
.status-meta { color: var(--muted); font-size: 13px; }
.status-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    flex-shrink: 0;
}
.status-domains {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    flex: 1;
    min-width: 0;
}
.domain-tag {
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    color: #334155;
    background: #f1f5f9;
    border-radius: 6px;
}
.status-link {
    margin-left: auto;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
}

/* Features */
.section-head {
    text-align: center;
    max-width: 32em;
    margin: 0 auto 40px;
}
.section-head h2 {
    margin: 0 0 10px;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}
.section-head p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
}
.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}
.feature {
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color .2s, box-shadow .2s;
}
.feature:hover {
    border-color: #cbd5e1;
    box-shadow: var(--shadow);
}
.feature__icon {
    width: 40px; height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    border-radius: 10px;
    background: var(--accent-soft);
    color: var(--accent);
}
.feature__icon svg { width: 20px; height: 20px; }
.feature h3 {
    margin: 0 0 8px;
    font-size: 1rem;
    font-weight: 700;
}
.feature p {
    margin: 0;
    font-size: 14px;
    color: var(--muted);
    line-height: 1.6;
}
.feature a {
    display: inline-block;
    margin-top: 12px;
    font-size: 13px;
    font-weight: 600;
}

/* 开始使用 */
.cta-strip {
    margin-bottom: 48px;
    padding: 20px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.cta-strip__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px 24px;
    flex-wrap: wrap;
}
.cta-strip__text {
    flex: 1;
    min-width: min(100%, 220px);
}
.cta-strip h2 {
    margin: 0 0 4px;
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}
.cta-strip__lead {
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--muted);
}
.cta-strip__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
@media (max-width: 640px) {
    .cta-strip__inner {
        flex-direction: column;
        align-items: stretch;
    }
    .cta-strip__actions .btn { flex: 1; min-width: 0; }
}


@media (max-width: 768px) {
    .hero__grid > .mx-card {
        display: none;
    }
}
@media (max-width: 900px) {
    .hero__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .features { grid-template-columns: repeat(2, 1fr); }
    .status-divider { display: none; }
    .status-link { margin-left: 0; width: 100%; }
}
@media (max-width: 600px) {
    .hero { padding: 40px 0 32px; }
    .features { grid-template-columns: 1fr; }
    .status-bar { flex-direction: column; align-items: flex-start; }
}