/* ===================================
   方法论页专用样式
   =================================== */

/* [2] Hero区 */
.method-hero {
    height: 50vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-primary);
    padding-top: 72px;
}

.method-hero-content {
    text-align: center;
}

.method-title {
    font-size: 56px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.method-title-en {
    font-family: var(--font-serif-en);
    font-size: 18px;
    font-style: italic;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.method-subtitle {
    font-size: 20px;
    color: var(--color-text-tertiary);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

/* [3] 核心引言区 */
.core-quote {
    background-color: var(--color-bg-white);
    padding: var(--spacing-3xl) 0;
}

.quote-box {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-2xl) var(--spacing-3xl);
    border-radius: 4px;
    text-align: center;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.quote-box.animate {
    opacity: 1;
    transform: translateY(0);
}

.quote-box::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 40px;
    font-size: 120px;
    font-family: var(--font-serif-en);
    color: rgba(201, 74, 74, 0.1);
    line-height: 1;
}

.quote-text {
    font-size: 24px;
    line-height: 2.2;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.quote-author {
    font-size: 16px;
    font-style: normal;
    color: var(--color-accent);
}

/* [4] 艺术透镜区 */
.art-lens {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-4xl) 0;
}

.lens-intro {
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    text-align: center;
    font-size: 18px;
    line-height: 1.9;
    color: var(--color-text-secondary);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.lens-intro.animate {
    opacity: 1;
    transform: translateY(0);
}

.lens-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.lens-card {
    background-color: var(--color-bg-white);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s ease;
}

.lens-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.lens-card:hover {
    box-shadow: var(--shadow-md);
}

.lens-header {
    background-color: var(--color-bg-dark);
    padding: var(--spacing-md) var(--spacing-lg);
}

.lens-label {
    display: inline-block;
    font-size: 12px;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
}

.lens-title {
    font-size: 24px;
    font-weight: 500;
    color: var(--color-text-inverse);
}

.lens-content {
    padding: var(--spacing-lg);
}

.lens-explain {
    font-size: 16px;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.lens-example {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-md);
    border-radius: 4px;
    border-left: 3px solid var(--color-accent);
}

.example-label {
    display: inline-block;
    font-size: 12px;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.lens-example p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* [5] 框架详解区 */
.framework-detail {
    background-color: var(--color-bg-white);
    padding: var(--spacing-4xl) 0;
}

.framework-intro {
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    text-align: center;
    font-size: 18px;
    line-height: 1.9;
    color: var(--color-text-secondary);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.framework-intro.animate {
    opacity: 1;
    transform: translateY(0);
}

.framework-flow {
    max-width: 700px;
    margin: 0 auto;
}

.flow-step {
    background-color: var(--color-bg-primary);
    border-radius: 4px;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.flow-step.animate {
    opacity: 1;
    transform: translateY(0);
}

.flow-step-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-bg-white);
    border-bottom: 1px solid #eee;
}

.flow-label {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-text-primary);
    color: var(--color-text-inverse);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
}

.flow-label.highlight {
    background-color: var(--color-accent);
}

.flow-title-group {
    flex: 1;
}

.flow-title {
    font-size: 20px;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.flow-subtitle {
    font-family: var(--font-serif-en);
    font-size: 14px;
    font-style: italic;
    color: var(--color-text-tertiary);
}

.flow-step-content {
    padding: var(--spacing-lg);
}

.flow-action {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.flow-case {
    background-color: var(--color-bg-white);
    padding: var(--spacing-md);
    border-radius: 4px;
    border-left: 3px solid var(--color-accent);
}

.case-label {
    display: inline-block;
    font-size: 12px;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.flow-case p {
    font-size: 15px;
    color: var(--color-text-primary);
    line-height: 1.7;
}

.flow-connector {
    display: flex;
    justify-content: center;
    padding: var(--spacing-sm) 0;
}

.connector-arrow {
    font-size: 24px;
    color: var(--color-text-light);
}

/* 框架总结 */
.framework-summary {
    margin-top: var(--spacing-2xl);
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--color-bg-primary);
    border-radius: 4px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.framework-summary.animate {
    opacity: 1;
    transform: translateY(0);
}

.summary-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 20px;
    font-weight: 500;
}

.summary-start,
.summary-end {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-accent);
    color: var(--color-text-inverse);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.summary-arrow {
    color: var(--color-text-light);
}

.summary-middle {
    color: var(--color-text-primary);
}

.summary-text {
    font-size: 18px;
    color: var(--color-text-secondary);
    font-style: italic;
}

/* [6] 迭代日志区 */
.iteration-log {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-4xl) 0;
}

.log-intro {
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    text-align: center;
    font-size: 18px;
    line-height: 1.9;
    color: var(--color-text-secondary);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.log-intro.animate {
    opacity: 1;
    transform: translateY(0);
}

.log-template {
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    background-color: var(--color-bg-white);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.log-template.animate {
    opacity: 1;
    transform: translateY(0);
}

.log-header {
    background-color: var(--color-bg-dark);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.log-number {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-inverse);
}

.log-date {
    font-size: 14px;
    color: var(--color-text-light);
}

.log-body {
    padding: var(--spacing-lg);
}

.log-item {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid #eee;
}

.log-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.log-item:first-child {
    padding-top: 0;
}

.log-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.log-prompt {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-style: italic;
}

.log-note {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-tertiary);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.log-note.animate {
    opacity: 1;
    transform: translateY(0);
}

/* [7] 行动召唤区 */
.method-cta {
    background-color: var(--color-bg-dark);
    color: var(--color-text-inverse);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.method-cta .cta-title {
    font-size: 32px;
    font-weight: 500;
    color: var(--color-text-inverse);
    margin-bottom: var(--spacing-sm);
}

.method-cta .cta-subtitle {
    font-size: 16px;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.method-cta .btn-primary {
    background-color: var(--color-accent);
}

.method-cta .btn-primary:hover {
    background-color: var(--color-accent-hover);
}

.method-cta .btn-secondary {
    border-color: var(--color-text-inverse);
    color: var(--color-text-inverse);
}

.method-cta .btn-secondary:hover {
    background-color: var(--color-text-inverse);
    color: var(--color-bg-dark);
}

/* ===================================
   响应式设计
   =================================== */

/* 平板 */
@media (max-width: 1199px) {
    .lens-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }

    .quote-box {
        padding: var(--spacing-xl) var(--spacing-lg);
    }

    .quote-box::before {
        font-size: 80px;
        left: 20px;
    }
}

/* 移动端 */
@media (max-width: 767px) {
    .method-title {
        font-size: 40px;
    }

    .method-subtitle {
        font-size: 16px;
    }

    .quote-text {
        font-size: 20px;
        line-height: 2.0;
    }

    .quote-box::before {
        font-size: 60px;
        top: 10px;
        left: 10px;
    }

    .lens-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .lens-title {
        font-size: 20px;
    }

    .lens-content {
        padding: var(--spacing-md);
    }

    .flow-step-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .flow-label {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .flow-title {
        font-size: 18px;
    }

    .flow-step-content {
        padding: var(--spacing-md);
    }

    .summary-visual {
        flex-wrap: wrap;
        font-size: 16px;
    }

    .summary-start,
    .summary-end {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .log-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .log-body {
        padding: var(--spacing-md);
    }

    .method-cta .cta-title {
        font-size: 28px;
    }

    .cta-buttons {
        flex-direction: column;
    }
}