/* 使用说明页面全新设计样式 */

/* ===== 英雄区域 ===== */
.instructions-hero {
    position: relative;
    min-height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #D97A5E 0%, #C06449 50%, #f093fb 100%);
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.3);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: rgba(192, 100, 73, 0.4);
    bottom: -50px;
    left: -50px;
    animation: float 10s ease-in-out infinite reverse;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: rgba(240, 147, 251, 0.3);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse-glow 6s ease-in-out infinite;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(5deg); }
    66% { transform: translate(-20px, 20px) rotate(-5deg); }
}

@keyframes pulse-glow {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.5; }
}

.instructions-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 3rem 2rem;
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge-icon {
    font-size: 1.2rem;
}

.badge-text {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    background: linear-gradient(to right, #ffffff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
}

/* ===== 通用区块样式 ===== */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 5rem 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-header.light {
    color: white;
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-header.light .section-title {
    color: white;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-header.light .section-desc {
    color: rgba(255, 255, 255, 0.8);
}

/* ===== 使用指南主容器 ===== */
.guide-section {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: 4rem 0;
}

.guide-main-card {
    background: white;
    border-radius: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

/* 头部概览 */
.guide-header {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    padding: 3rem;
    background: linear-gradient(135deg, rgba(217, 122, 94, 0.03) 0%, rgba(192, 100, 73, 0.03) 100%);
    border-bottom: 1px solid var(--border-color);
}

.guide-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 1.5rem;
}

.tag-dot {
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.guide-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.guide-intro {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.guide-highlights {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.highlight-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.highlight-text {
    display: flex;
    flex-direction: column;
}

.highlight-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.highlight-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* 可视化预览 */
.guide-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.process-preview {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    margin-bottom: 1rem;
}

.preview-step {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-muted);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.preview-step.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 12px rgba(217, 122, 94, 0.4);
}

.preview-connector {
    position: absolute;
    top: 50%;
    left: 1.25rem;
    right: 1.25rem;
    height: 2px;
    background: var(--border-color);
    transform: translateY(-50%);
    z-index: 0;
}

.progress-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* 6个步骤网格 */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding: 2rem 3rem;
    position: relative;
}

.step-item {
    position: relative;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.step-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color);
}

.step-item.active {
    background: linear-gradient(135deg, rgba(217, 122, 94, 0.05), rgba(192, 100, 73, 0.05));
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(217, 122, 94, 0.15);
}

.step-item.completed {
    background: linear-gradient(135deg, rgba(72, 187, 120, 0.05), rgba(56, 161, 105, 0.05));
    border-color: var(--success-color);
}

.step-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.step-number-badge {
    position: relative;
    width: 2rem;
    height: 2rem;
}

.step-num {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.step-check {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--success-color);
    color: white;
    font-size: 1rem;
    border-radius: 50%;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
}

.step-item.completed .step-num {
    opacity: 0;
    transform: scale(0.8);
}

.step-item.completed .step-check {
    opacity: 1;
    transform: scale(1);
}

.step-icon {
    font-size: 1.5rem;
    opacity: 0.8;
}

.step-item-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.step-item-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.step-arrow {
    position: absolute;
    right: -1.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1.5rem;
    height: 1.5rem;
    color: var(--border-color);
    z-index: 1;
}

.step-item:nth-child(3n) .step-arrow,
.step-item:last-child .step-arrow {
    display: none;
}

/* 底部操作栏 */
.guide-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.step-indicator {
    display: flex;
    gap: 0.5rem;
}

.indicator-dot {
    width: 8px;
    height: 8px;
    background: var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator-dot.active {
    background: var(--primary-color);
    width: 24px;
    border-radius: 4px;
}

.start-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(217, 122, 94, 0.3);
}

.start-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(217, 122, 94, 0.4);
}

.start-btn svg {
    transition: transform 0.3s ease;
}

.start-btn:hover svg {
    transform: translateX(4px);
}

/* ===== 功能特色区块 ===== */
.features-section {
    background: linear-gradient(135deg, #1a1c2e 0%, #2d3748 50%, #1a202c 100%);
    position: relative;
    overflow: hidden;
}

.features-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(217, 122, 94, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(192, 100, 73, 0.15) 0%, transparent 50%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    position: relative;
    z-index: 1;
}

.feature-card-large {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card-large::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(217, 122, 94, 0.2), rgba(192, 100, 73, 0.2));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card-large:hover,
.feature-card-large.active {
    transform: translateY(-8px);
    border-color: rgba(217, 122, 94, 0.5);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-card-large:hover::before,
.feature-card-large.active::before {
    opacity: 1;
}

.feature-icon-large {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.feature-title-large {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.75rem;
    position: relative;
    z-index: 1;
}

.feature-desc-large {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    font-size: 0.95rem;
    position: relative;
    z-index: 1;
}

.feature-hover-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.4s ease, margin-top 0.4s ease;
    opacity: 0;
    position: relative;
    z-index: 1;
}

.feature-card-large:hover .feature-hover-content,
.feature-card-large.active .feature-hover-content {
    max-height: 200px;
    opacity: 1;
    margin-top: 1rem;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    padding: 0.375rem 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature-list li::before {
    content: '→';
    color: var(--primary-color);
    font-weight: bold;
}

/* ===== 格式展示区块 ===== */
.formats-section {
    background: var(--bg-primary);
}

.formats-showcase {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.format-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    max-width: 400px;
}

.format-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.dwg-card:hover {
    border-color: var(--primary-color);
}

.dxf-card:hover {
    border-color: var(--success-color);
}

.format-icon {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
}

.format-icon svg {
    width: 100%;
    height: 100%;
}

.format-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.format-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.format-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge {
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 50px;
}

.dwg-card .badge {
    background: rgba(217, 122, 94, 0.1);
    color: var(--primary-color);
}

.dxf-card .badge {
    background: rgba(72, 187, 120, 0.1);
    color: var(--success-color);
}

.format-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.connector-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--border-color), var(--primary-color), var(--border-color));
}

.connector-text {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ===== 信息卡片区块 ===== */
.info-cards-section {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.info-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.info-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.info-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.info-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(217, 122, 94, 0.3);
}

.info-card-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.info-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.info-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.info-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.feature-check {
    width: 20px;
    height: 20px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
}

.info-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.info-card-link:hover {
    gap: 0.75rem;
    color: var(--primary-dark);
}

.info-card-link svg {
    transition: transform 0.3s ease;
}

.info-card-link:hover svg {
    transform: translateX(4px);
}

.privacy-notice {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: var(--radius-md);
    color: var(--warning-color);
    font-size: 0.875rem;
    font-weight: 500;
}

.notice-icon {
    font-size: 1rem;
}

/* ===== 提示卡片区块 ===== */
.tips-section-new {
    background: linear-gradient(135deg, #D97A5E 0%, #C06449 100%);
    position: relative;
    overflow: hidden;
}

.tips-section-new::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.tips-grid-new {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    position: relative;
    z-index: 1;
}

.tip-card-new {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tip-card-new:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.tip-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.3);
    line-height: 1;
}

.tip-content {
    flex: 1;
}

.tip-content p {
    color: white;
    line-height: 1.6;
    margin: 0;
}

.tip-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
    border-radius: 0 var(--radius-xl) 0 100%;
}

/* ===== CTA区块 ===== */
.cta-section {
    position: relative;
    padding: 6rem 2rem;
    background: var(--bg-primary);
    overflow: hidden;
}

.cta-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.cta-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.cta-orb.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--primary-color);
    top: -200px;
    left: -100px;
}

.cta-orb.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary-color);
    bottom: -150px;
    right: -100px;
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(217, 122, 94, 0.4);
    transition: all 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(217, 122, 94, 0.5);
}

.cta-button svg {
    transition: transform 0.3s ease;
}

.cta-button:hover svg {
    transform: translateX(4px);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .info-cards-grid {
        grid-template-columns: 1fr;
    }
    
    /* 使用指南容器响应式 */
    .guide-header {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .step-arrow {
        display: none;
    }
    
    .step-item:nth-child(2n) .step-arrow {
        display: none;
    }
}

@media (max-width: 768px) {
    .instructions-hero {
        min-height: 400px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-container {
        padding: 3rem 1.5rem;
    }
    
    /* 使用指南容器响应式 */
    .guide-header {
        padding: 2rem;
    }
    
    .guide-title {
        font-size: 1.5rem;
    }
    
    .guide-highlights {
        flex-direction: column;
        gap: 1rem;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
        padding: 1.5rem 2rem;
    }
    
    .step-item {
        padding: 1.25rem;
    }
    
    .guide-footer {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem 2rem;
    }
    
    .guide-visual {
        order: -1;
        padding: 1rem;
    }
    
    .process-preview {
        gap: 0.375rem;
    }
    
    .preview-step {
        width: 2rem;
        height: 2rem;
        font-size: 0.75rem;
    }
    
    .formats-showcase {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .format-connector {
        flex-direction: row;
    }
    
    .connector-line {
        width: 60px;
        height: 2px;
    }
    
    .format-card {
        flex-direction: column;
        text-align: center;
        max-width: 100%;
    }
    
    .format-badges {
        justify-content: center;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .hero-badge {
        padding: 0.375rem 0.75rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tips-grid-new {
        grid-template-columns: 1fr;
    }
    
    .info-cards-grid {
        grid-template-columns: 1fr;
    }
    
    .info-card {
        padding: 1.5rem;
    }
    
    .cta-button {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* ===== 动画效果 ===== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 打印样式 */
@media print {
    .instructions-hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .hero-background,
    .cta-background {
        display: none;
    }
    
    .step-card:hover {
        transform: none;
    }
    
    .feature-card-large {
        break-inside: avoid;
    }
}