* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(180deg, #f0f2f5 0%, #e8ecf1 100%);
    min-height: 100vh;
}

.page {
    max-width: 480px;
    margin: 0 auto;
    padding: 40px 20px 60px;
}

.header {
    text-align: center;
    margin-bottom: 36px;
    animation: fadeInDown 0.6s ease-out;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.logo {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 18px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.35);
}

h1 {
    color: #2d3748;
    font-size: 1.6em;
    font-weight: 700;
    margin-bottom: 4px;
}

.subtitle {
    color: #718096;
    font-size: 0.95em;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.step {
    display: flex;
    gap: 16px;
    animation: fadeInUp 0.5s ease-out both;
}

.step:nth-child(1) { animation-delay: 0.1s; }
.step:nth-child(3) { animation-delay: 0.25s; }
.step:nth-child(5) { animation-delay: 0.4s; }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-number {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9em;
    font-weight: 700;
    margin-top: 2px;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.step-content {
    flex: 1;
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid #edf2f7;
}

.step-title {
    color: #2d3748;
    font-size: 1.05em;
    font-weight: 600;
    margin-bottom: 6px;
}

.step-desc {
    color: #718096;
    font-size: 0.85em;
    line-height: 1.5;
    margin-bottom: 16px;
}

.step-connector {
    width: 2px;
    height: 20px;
    background: linear-gradient(180deg, #667eea, #764ba2);
    margin-left: 15px;
    border-radius: 1px;
    opacity: 0.4;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-size: 0.95em;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.download-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.download-btn:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 1.1em;
}

.highlight {
    color: #667eea;
    font-weight: 700;
    font-size: 1.1em;
}

.highlight-circle {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: white !important;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.flow-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 0 4px;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.flow-step span {
    color: #718096;
    font-size: 0.78em;
    font-weight: 500;
}

.flow-icon {
    width: 44px;
    height: 44px;
    background: #f0f2f5;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3em;
    border: 1px solid #e2e8f0;
}

.flow-arrow {
    color: #cbd5e0;
    font-size: 1.4em;
    font-weight: 300;
    margin: 0 2px;
    padding-bottom: 18px;
}

.preview-card {
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 0.85em;
    font-weight: 600;
}

.preview-dot {
    width: 8px;
    height: 8px;
    background: #48bb78;
    border-radius: 50%;
    box-shadow: 0 0 6px rgba(72, 187, 120, 0.5);
}

.preview-body {
    padding: 4px 0;
}

.preview-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    color: #4a5568;
    font-size: 0.85em;
}

.preview-item:not(:last-child) {
    border-bottom: 1px solid #edf2f7;
}

.preview-toggle {
    width: 36px;
    height: 20px;
    background: #48bb78;
    border-radius: 10px;
    position: relative;
}

.preview-toggle::after {
    content: '';
    position: absolute;
    right: 2px;
    top: 2px;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.preview-arrow {
    color: #cbd5e0;
    font-size: 1.2em;
    font-weight: 300;
}

.tip {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-top: 28px;
    padding: 14px 16px;
    background: #fffbeb;
    border: 1px solid #fef3c7;
    border-radius: 12px;
    color: #92400e;
    font-size: 0.82em;
    line-height: 1.5;
    animation: fadeInUp 0.5s ease-out 0.55s both;
}

.tip-icon {
    flex-shrink: 0;
    font-size: 1.1em;
}