/* --- qz 前置页样式 (公用部分见 landing.css) --- */
/* Premium variables */
.qz-page {
    --qz-accent: #3b82f6;
    --qz-accent-dark: #2563eb;
    --qz-dark: #0f172a;
    --qz-muted: #64748b;
    --qz-light: #f8fafc;
    --qz-card-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    --qz-card-shadow-hover: 0 12px 40px rgba(15, 23, 42, 0.12);
}

.qz-page .hero {
    background: linear-gradient(to bottom, rgba(2, 6, 23, 0.7) 0%, rgba(2, 6, 23, 0.95) 100%),
                url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?q=80&w=1920');
}

.qz-page .hero h1 {
    max-width: 900px;
}

.qz-page .hero-label {
    background: var(--landing-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.qz-page .hero .hero-desc {
    color: var(--landing-text-muted);
}

.qz-page .start-btn {
    padding: 20px 60px;
    font-size: 22px;
    font-weight: 900;
    box-shadow: 0 0 20px var(--landing-primary-glow);
}

.qz-page .start-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px var(--landing-primary);
}

.qz-page .hero .ad-box {
    width: 700px;
    max-width: 95%;
    font-size: 12px;
}

.qz-page .section {
    padding: 80px 0;
}


.qz-page .feat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.qz-page .feat-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 24px;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    background: white;
    box-shadow: var(--qz-card-shadow);
}

.qz-page .feat-card:hover {
    border-color: var(--qz-accent);
    box-shadow: var(--qz-card-shadow-hover);
    transform: translateY(-2px);
}

.qz-page .feat-icon {
    font-size: 28px;
    min-width: 50px;
    height: 50px;
}

.qz-page .feat-info h3 {
    font-size: 16px;
    margin-bottom: 4px;
    color: var(--landing-text-dark);
}

.qz-page .feat-info p {
    font-size: 13px;
    color: var(--landing-text-muted);
    line-height: 1.4;
}

/* How it Works */
.qz-page .how-flex {
    display: flex;
    gap: 40px;
    align-items: center;
}

.qz-page .how-img {
    flex: 1;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.qz-page .how-img img {
    width: 100%;
    display: block;
}

.qz-page .how-content {
    flex: 1;
}

.qz-page .how-content h2 {
    margin-bottom: 32px;
    font-size: 28px;
    font-weight: 800;
    color: var(--qz-dark);
    letter-spacing: -0.02em;
}

.qz-page .how-step {
    margin-bottom: 30px;
    display: flex;
    gap: 20px;
}

.qz-page .step-num {
    min-width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--qz-accent) 0%, var(--qz-accent-dark) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
}

.qz-page .how-step h4 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--landing-text-dark);
}

.qz-page .how-step p {
    font-size: 15px;
    color: var(--landing-text-muted);
    line-height: 1.6;
}

/* SEO 内容 - 多模块结构 */
.qz-page .intro-article {
    max-width: 850px;
    margin: 0 auto;
    padding: 0 20px;
}

.qz-page .intro-article h2 {
    font-size: 28px;
    color: #0f172a;
    margin: 40px 0 20px;
    font-weight: 800;
}

.qz-page .intro-article .writing_ft {
    font-weight: 700;
    color: var(--landing-text-dark);
    font-size: 18px;
    margin-top: 2em;
}

.qz-page .intro-article .writing_ft:first-child {
    margin-top: 0;
}

.qz-page .intro-article .writing_h {
    color: var(--landing-text-dark);
    margin: 2.5em 0 1em;
    font-size: 22px;
    font-weight: 800;
    padding-left: 16px;
    border-left: 4px solid var(--landing-primary);
    line-height: 1.3;
}

.qz-page .intro-article .writing_h:first-of-type {
    margin-top: 1.5em;
}

.qz-page .intro-article ul,
.qz-page .intro-article ol {
    margin: 1em 0 1.5em;
    padding-left: 1.5em;
}

.qz-page .intro-article ul {
    list-style: none;
    padding-left: 0;
}

.qz-page .intro-article ul li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
}

.qz-page .intro-article ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--landing-primary);
    border-radius: 50%;
}

.qz-page .intro-article ol li {
    margin-bottom: 10px;
}

.qz-page .intro-article .formula-block {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(59, 130, 246, 0.04) 100%);
    padding: 20px 24px;
    border-radius: 12px;
    border: 1px solid rgba(59, 130, 246, 0.15);
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 18px;
    letter-spacing: 0.02em;
    margin: 1.5em 0;
    font-weight: 600;
    color: var(--landing-primary);
}

.qz-page .intro-article .record-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 14px 20px;
    border-radius: 8px;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--landing-text-dark);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.qz-page .intro-article .record-name {
    font-weight: 400;
    color: var(--landing-text-muted);
    font-size: 0.95em;
}

/* === New premium modules === */
.qz-page .section {
    padding: 100px 0;
}

.qz-page .section--intro .intro-article--lead {
    max-width: 720px;
    margin: 0 auto;
}

.qz-page .intro-article--lead .writing_ft {
    font-size: 20px;
    line-height: 1.5;
}

.qz-page .intro-article--lead p {
    font-size: 17px;
    line-height: 1.75;
    color: var(--qz-muted);
}

/* Why block - split layout */
.qz-page .block-why {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 60px;
    align-items: center;
}

.qz-page .block-why__title {
    font-size: 26px;
    font-weight: 800;
    color: var(--qz-dark);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.qz-page .block-why__text {
    font-size: 17px;
    line-height: 1.75;
    color: var(--qz-muted);
}

.qz-page .stat-card {
    background: linear-gradient(135deg, var(--qz-accent) 0%, var(--qz-accent-dark) 100%);
    color: white;
    padding: 32px;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.25);
}

.qz-page .stat-card__label {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    opacity: 0.9;
    margin-bottom: 8px;
}

.qz-page .stat-card__value {
    font-size: 24px;
    font-weight: 800;
}

/* Tips block - 3-column cards */
.qz-page .section-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--qz-dark);
    text-align: center;
    margin-bottom: 48px;
    letter-spacing: -0.02em;
}

.qz-page .tips-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.qz-page .tip-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 28px;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: var(--qz-card-shadow);
}

.qz-page .tip-card:hover {
    border-color: var(--qz-accent);
    box-shadow: var(--qz-card-shadow-hover);
    transform: translateY(-4px);
}

.qz-page .tip-card--1 { border-top: 4px solid var(--qz-accent); }
.qz-page .tip-card--2 { border-top: 4px solid #8b5cf6; }
.qz-page .tip-card--3 { border-top: 4px solid #06b6d4; }

.qz-page .tip-card__num {
    display: block;
    font-size: 14px;
    font-weight: 800;
    color: var(--qz-muted);
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}

.qz-page .tip-card p {
    font-size: 15px;
    line-height: 1.65;
    color: var(--qz-dark);
}

/* Benchmark block - dark section */
.qz-page .section--benchmark.bg-dark {
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
}

.qz-page .benchmark-block {
    max-width: 680px;
    margin: 0 auto;
}

.qz-page .benchmark-block__title {
    font-size: 26px;
    font-weight: 800;
    color: white;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.qz-page .benchmark-block__text {
    font-size: 17px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
}

.qz-page .benchmark-visual {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.qz-page .benchmark-bar {
    display: flex;
    align-items: center;
    gap: 16px;
}

.qz-page .benchmark-bar__fill {
    height: 8px;
    border-radius: 4px;
    min-width: 60px;
}

.qz-page .benchmark-bar__fill--1 { width: 25%; background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.qz-page .benchmark-bar__fill--2 { width: 50%; background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.qz-page .benchmark-bar__fill--3 { width: 85%; background: linear-gradient(90deg, #06b6d4, #22d3ee); }

.qz-page .benchmark-bar__label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    min-width: 80px;
}

/* FAQ block */
.qz-page .section--faq .section-title {
    margin-bottom: 40px;
}

.qz-page .faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.qz-page .faq-item {
    border-bottom: 1px solid #e2e8f0;
    padding: 24px 0;
}

.qz-page .faq-item:first-child {
    padding-top: 0;
}

.qz-page .faq-item__q {
    font-size: 18px;
    font-weight: 700;
    color: var(--qz-dark);
    margin-bottom: 12px;
}

.qz-page .faq-item__a {
    font-size: 16px;
    line-height: 1.65;
    color: var(--qz-muted);
}

/* CTA block */
.qz-page .cta-block {
    text-align: center;
    padding: 48px 24px;
}

.qz-page .cta-block__text {
    font-size: 20px;
    font-weight: 700;
    color: var(--qz-dark);
    margin-bottom: 28px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.qz-page .start-btn--cta {
    display: inline-block;
    padding: 18px 48px;
    font-size: 18px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .qz-page .feat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .qz-page .block-why {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .qz-page .stat-card {
        max-width: 320px;
        margin: 0 auto;
    }

    .qz-page .tips-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .qz-page .section {
        padding: 20px 0;
    }
    .qz-page .hero h1{
        font-size: 26px;
    }
    .qz-page .hero .hero-desc{
        font-size: 12px;
        opacity: .78;
        line-height: 16px;
        margin-bottom: 15px;
        padding: 0 20px;
        color: #fff;
    }

    .qz-page .how-flex {
        flex-direction: column;
    }

    .qz-page .block-why__title,
    .qz-page .section-title,
    .qz-page .benchmark-block__title {
        font-size: 22px;
    }

    .qz-page .intro-article--lead .writing_ft {
        font-size: 18px;
    }

    .qz-page .intro-article--lead p {
        font-size: 16px;
    }

    .qz-page .cta-block__text {
        font-size: 18px;
    }
    .qz-page .start-btn{
        padding: 12px 60px;
        font-size: 18px;
    }
}