/* aiweb3 首页 — 双栏 Hero + 四条服务线 */
.hero {
    position: relative;
    padding: clamp(2.5rem, 8vw, 4rem) 0 3rem;
    overflow: hidden;
    background: linear-gradient(135deg, #0f172a 0%, #134e4a 55%, #0f766e 100%);
    color: #f8fafc;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 100% 0%, rgba(94, 234, 212, 0.15), transparent 55%),
        radial-gradient(ellipse 40% 40% at 0% 100%, rgba(8, 145, 178, 0.2), transparent 50%);
    pointer-events: none;
}

.hero__inner {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 900px) {
    .hero__inner { grid-template-columns: 1.2fr 0.8fr; }
}

.hero__slide { position: relative; }

.hero__image {
    width: 100%;
    max-height: 280px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.hero__kicker {
    margin: 0 0 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #5eead4;
}

.hero__title {
    margin: 0 0 1rem;
    font-size: clamp(1.85rem, 4.5vw, 2.65rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    max-width: 20ch;
    color: #fff;
}

.hero__lead {
    margin: 0 0 1.75rem;
    max-width: 36rem;
    font-size: 1.0625rem;
    color: #cbd5e1;
    line-height: 1.65;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.hero__panel {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    backdrop-filter: blur(8px);
}

.hero__panel-title {
    margin: 0 0 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #94a3b8;
}

.hero__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.hero__stat strong {
    display: block;
    font-size: 1.35rem;
    color: #5eead4;
    font-weight: 700;
}

.hero__stat span {
    font-size: 0.8125rem;
    color: #94a3b8;
}

.features-section--services { padding: 2.5rem 0 1rem; }

.service-lines {
    display: grid;
    gap: 1rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

@media (min-width: 768px) {
    .service-lines { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .service-lines { grid-template-columns: repeat(4, 1fr); }
}

.service-line-card {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.25rem 1.35rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.service-line-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.service-line-card__num {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.service-line-card__title {
    margin: 0 0 0.5rem;
    font-size: 1.05rem;
    font-weight: 700;
}

.service-line-card__text {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.55;
}

.plans-section { padding: 1rem 0 3rem; }

.cta-band {
    padding: 3.5rem 0;
    background: linear-gradient(135deg, #ccfbf1 0%, #f0fdfa 50%, #f0f4f8 100%);
    border-block: 1px solid var(--line);
}

.cta-band__inner { text-align: center; }

.cta-band__title {
    margin: 0 0 0.75rem;
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--text);
    font-weight: 700;
}

.cta-band__text { margin: 0 auto 1.5rem; max-width: 36rem; color: var(--text-muted); }
.news-section { padding: 0 0 4rem; }