/* ===== Gemini Banner ===== */
.gemini-banner {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: #0a0a0f;
    overflow: hidden;
    padding-top: 70px;
}

.gemini-banner-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(66, 133, 244, 0.25) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 80%, rgba(162, 107, 255, 0.2) 0%, transparent 55%),
        radial-gradient(ellipse 50% 40% at 10% 70%, rgba(52, 168, 83, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.gemini-banner .container {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
}

.banner-content {
    text-align: center;
    max-width: 780px;
    color: #fff;
}

.gemini-logo-wrap {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50px;
    padding: 6px 20px;
    margin-bottom: 28px;
    backdrop-filter: blur(8px);
}

.gemini-icon {
    font-size: 1.4rem;
    background: linear-gradient(135deg, #4285f4, #a26bff, #34a853);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: geminiSpin 4s linear infinite;
}

@keyframes geminiSpin {
    0% { filter: hue-rotate(0deg); }
    100% { filter: hue-rotate(360deg); }
}

.gemini-brand {
    font-size: 1.1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 0.05em;
}

.gemini-banner h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #fff;
}

.gradient-text {
    background: linear-gradient(90deg, #4285f4, #a26bff, #34a853, #fbbc04);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientShift 4s linear infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.banner-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.8;
    margin-bottom: 36px;
}

.banner-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

.btn-primary {
    display: inline-block;
    padding: 14px 32px;
    background: linear-gradient(135deg, #4285f4, #a26bff);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(66, 133, 244, 0.4);
}

.btn-secondary {
    display: inline-block;
    padding: 14px 32px;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.3);
}

.banner-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-num {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, #4285f4, #a26bff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
}

/* ===== 模型系列 ===== */
.section-models {
    padding: 80px 0;
    background: #f2f5fa;
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.model-card {
    background: #fff;
    border-radius: 16px;
    padding: 28px;
    border: 1px solid #e8eaf0;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.card-pro { border-top: 3px solid #4285f4; }
.card-flash { border-top: 3px solid #fbbc04; }
.card-vertex { border-top: 3px solid #34a853; }
.card-nano { border-top: 3px solid #ea4335; }

.model-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}

.model-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1), rgba(162, 107, 255, 0.1));
    flex-shrink: 0;
}

.model-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 4px;
}

.model-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
}

.tag-flagship { background: rgba(66, 133, 244, 0.12); color: #4285f4; }
.tag-fast { background: rgba(251, 188, 4, 0.15); color: #b8860b; }
.tag-enterprise { background: rgba(52, 168, 83, 0.12); color: #34a853; }
.tag-image { background: rgba(234, 67, 53, 0.12); color: #ea4335; }

.model-desc {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.model-features {
    list-style: none;
    margin-bottom: 24px;
    flex: 1;
}

.model-features li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.875rem;
    color: #444;
    padding: 5px 0;
    border-bottom: 1px solid #f5f5f5;
}

.model-features li:last-child { border-bottom: none; }

.check {
    color: #4285f4;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

.model-btn {
    display: block;
    text-align: center;
    padding: 12px;
    background: linear-gradient(135deg, #4285f4, #a26bff);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: auto;
}

.model-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(66, 133, 244, 0.35);
}

/* ===== 核心能力 ===== */
.section-capabilities {
    padding: 80px 0;
    background: #fff;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.cap-card {
    padding: 28px 24px;
    background: #f8f9ff;
    border-radius: 14px;
    border: 1px solid #eef0f8;
    transition: all 0.3s ease;
}

.cap-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(66, 133, 244, 0.1);
    border-color: rgba(66, 133, 244, 0.2);
}

.cap-icon {
    font-size: 2rem;
    margin-bottom: 14px;
}

.cap-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.cap-card p {
    font-size: 0.875rem;
    color: #666;
    line-height: 1.65;
}

/* ===== 对比表格 ===== */
.section-compare {
    padding: 80px 0;
    background: #f2f5fa;
}

.compare-table-wrap {
    margin-top: 40px;
    overflow-x: auto;
    border-radius: 14px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    font-size: 0.9rem;
}

.compare-table thead tr {
    background: linear-gradient(135deg, #1a1a2e, #2d2d4e);
    color: #fff;
}

.compare-table th {
    padding: 18px 20px;
    text-align: center;
    font-weight: 600;
    font-size: 0.95rem;
}

.compare-table th:first-child {
    text-align: left;
}

.th-icon {
    margin-right: 6px;
}

.compare-table td {
    padding: 14px 20px;
    text-align: center;
    border-bottom: 1px solid #f0f2f8;
    color: #444;
}

.compare-table td:first-child {
    text-align: left;
    font-weight: 600;
    color: #1a1a2e;
}

.compare-table tbody tr:hover {
    background: #f8f9ff;
}

.compare-table tbody tr:last-child td {
    border-bottom: none;
}

.highlight-cell {
    color: #4285f4 !important;
    font-weight: 700 !important;
}

/* ===== 为什么选择我们 ===== */
.section-why {
    padding: 80px 0;
    background: #fff;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.why-card {
    padding: 28px 24px;
    background: #f8f9ff;
    border-radius: 14px;
    border: 1px solid #eef0f8;
    transition: all 0.3s ease;
}

.why-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(66, 133, 244, 0.1);
    border-color: rgba(66, 133, 244, 0.25);
}

.why-icon {
    font-size: 2rem;
    margin-bottom: 14px;
}

.why-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.why-card p {
    font-size: 0.875rem;
    color: #666;
    line-height: 1.65;
}

/* ===== 开通流程 ===== */
.section-steps {
    padding: 80px 0;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 100%);
}

.section-steps .title,
.section-steps .title-desc {
    color: #fff;
}

.section-steps .title-desc {
    color: rgba(255, 255, 255, 0.6);
}

.steps-wrap {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    margin-top: 50px;
    flex-wrap: wrap;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 200px;
    flex: 1;
    min-width: 160px;
}

.step-num {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4285f4, #a26bff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
}

.step-arrow {
    font-size: 1.8rem;
    color: rgba(66, 133, 244, 0.5);
    padding: 0 8px;
    margin-top: 18px;
    flex-shrink: 0;
}

/* ===== 使用场景 ===== */
.section-usecases {
    padding: 80px 0;
    background: #f2f5fa;
}

.usecase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.usecase-card {
    padding: 28px 24px;
    background: #fff;
    border-radius: 14px;
    border: 1px solid #e8eaf0;
    transition: all 0.3s ease;
}

.usecase-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
    border-color: rgba(66, 133, 244, 0.2);
}

.usecase-icon {
    font-size: 2rem;
    margin-bottom: 14px;
}

.usecase-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.usecase-card p {
    font-size: 0.875rem;
    color: #666;
    line-height: 1.65;
}

/* ===== CTA ===== */
.section-cta {
    padding: 80px 0;
    background: #fff;
}

.cta-box {
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0d1b3e 100%);
    border-radius: 24px;
    padding: 60px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 60% at 50% 0%, rgba(66, 133, 244, 0.2) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 80% 100%, rgba(162, 107, 255, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.cta-gemini-icon {
    font-size: 3rem;
    background: linear-gradient(135deg, #4285f4, #a26bff, #34a853);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    animation: geminiSpin 4s linear infinite;
}

.cta-box h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    position: relative;
}

.cta-box p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    margin-bottom: 36px;
    position: relative;
}

.cta-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

.cta-btn-primary {
    display: inline-block;
    padding: 14px 36px;
    background: linear-gradient(135deg, #4285f4, #a26bff);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(66, 133, 244, 0.45);
}

.cta-btn-secondary {
    display: inline-block;
    padding: 14px 36px;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.cta-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.14);
}

/* ===== 底部服务保障 ===== */
.section-service {
    display: flex;
    background: linear-gradient(135deg, #1a1a2e, #0d1b3e);
}

.section-service .box {
    flex: 1;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    transition: background 0.3s ease;
}

.section-service .box:last-child {
    border-right: none;
}

.section-service .box:hover {
    background: rgba(66, 133, 244, 0.1);
}

.section-service .box a {
    display: block;
    padding: 36px 24px;
    text-align: center;
    text-decoration: none;
}

.section-service .box h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.section-service .box p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.5;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .gemini-banner {
        padding-top: 60px;
        min-height: auto;
        padding-bottom: 60px;
    }

    .banner-stats {
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

    .steps-wrap {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }

    .step-arrow {
        transform: rotate(90deg);
        margin: 0;
    }

    .step-item {
        max-width: 100%;
    }

    .section-service {
        flex-direction: column;
    }

    .section-service .box {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .section-service .box:last-child {
        border-bottom: none;
    }

    .compare-table th,
    .compare-table td {
        padding: 12px 10px;
        font-size: 0.8rem;
    }

    .cta-box {
        padding: 40px 20px;
    }

    .models-grid,
    .capabilities-grid,
    .why-grid,
    .usecase-grid {
        grid-template-columns: 1fr;
    }
}