/* ========================================
   RGV设备专题网站 - 设备选型样式表
   基于Bootstrap 5 定制
   ======================================== */
:root {
    --primary-blue: #0f2744;
    --secondary-blue: #1a4a7a;
    --accent-blue: #2563a8;
    --light-blue: #e8f1f8;
    --dark-bg: #0a1628;
    --industrial-gray: #64748b;
    --card-bg: rgba(255,255,255,0.97);
    --glass-bg: rgba(255,255,255,0.08);
    --glass-border: rgba(255,255,255,0.15);
    --success-green: #059669;
    --warning-orange: #d97706;
    --danger-red: #dc2626;
    --gradient-primary: linear-gradient(135deg, #0f2744 0%, #1a4a7a 100%);
    --gradient-accent: linear-gradient(135deg, #2563a8 0%, #3b82c4 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.14);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.18);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    /* font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif; */
    background: #f1f5f9;
    color: #334155;
    overflow-x: hidden;
    line-height: 1.6;
}
/* Banner */
.hero-banner {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 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");
}

.hero-banner h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-banner .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}
/* SVG Track Display */
.hero-banner .track-display {
    background: #f8fafc;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-banner .track-svg {
    max-width: 100%;
    height: auto;
}
/* Buttons */
.btn-rgv {
    background: var(--accent-blue);
    color: var(--white);
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    transition: all 0.3s;
}

.btn-rgv:hover {
    background: var(--secondary-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 82, 130, 0.3);
}

.btn-outline-rgv {
    border: 2px solid var(--accent-blue);
    color: var(--accent-blue);
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    background: transparent;
    transition: all 0.3s;
}

.btn-outline-rgv:hover {
    background: var(--accent-blue);
    color: var(--white);
}
/* ===== Hero Content ===== */
.hero-content {
    position: relative; z-index: 2;
    text-align: center; color: white;
    padding: 0 20px; max-width: 900px;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 8px 22px;
    border-radius: 50px;
    font-size: 0.88rem;
    margin-bottom: 28px;
    animation: fadeInDown 0.8s ease;
}
.hero-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease 0.2s both;
}
.hero-subtitle {
    font-size: clamp(0.95rem, 2.2vw, 1.15rem);
    font-weight: 300;
    opacity: 0.85;
    margin-bottom: 36px;
    animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-cta-group {
    display: flex; gap: 16px; justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s both;
}
.hero-cta {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--gradient-accent);
    color: white; padding: 14px 36px;
    border-radius: 50px; font-size: 1.05rem;
    font-weight: 500; text-decoration: none;
    border: none; cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(37,99,168,0.35);
}
.hero-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(37,99,168,0.5); color: white; }
.hero-cta-outline {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.35);
    box-shadow: none;
}
.hero-cta-outline:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.6); color: white; }
.hero-stats {
    display: flex; justify-content: center; gap: 50px;
    margin-top: 50px;
    animation: fadeInUp 0.8s ease 0.8s both;
}
.hero-stat { text-align: center; }
.hero-stat-value { font-size: 1.9rem; font-weight: 700; color: #7eb8e8; }
.hero-stat-label { font-size: 0.8rem; opacity: 0.65; margin-top: 4px; }

/* ===== 步骤导航 ===== */
.steps-nav {
    background: white; padding: 18px 0;
    box-shadow: var(--shadow-sm);
    position: sticky; top: 0; z-index: 1000;
}
.steps-container {
    display: flex; justify-content: space-between; align-items: center;
    max-width: 1200px; margin: 0 auto; padding: 20px 20px 0;
    position: relative;
}
.step-progress-bar {
    position: absolute; top: 50%; left: 45px; right: 45px;
    height: 3px; background: #e2e8f0;
    transform: translateY(-50%); z-index: 0; border-radius: 2px;
}
.step-progress-fill {
    height: 100%; background: var(--gradient-primary);
    border-radius: 2px; transition: width 0.5s ease;
}
.step-item {
    display: flex; flex-direction: column; align-items: center; gap: 6px;
    cursor: pointer; position: relative; z-index: 1;
    transition: all 0.3s ease;
}
.step-circle {
    width: 36px; height: 36px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: white; border: 2px solid #e2e8f0;
    font-weight: 600; font-size: 0.85rem;
    transition: all 0.3s ease;
}
.step-item.active .step-circle {
    background: var(--gradient-primary);
    border-color: var(--secondary-blue); color: white;
    box-shadow: 0 0 0 4px rgba(26,74,122,0.15);
}
.step-item.completed .step-circle {
    background: var(--success-green);
    border-color: var(--success-green); color: white;
}
.step-label {
    font-size: 0.7rem; font-weight: 500; color: #94a3b8;
    white-space: nowrap; transition: all 0.3s ease;
}
.step-item.active .step-label { color: var(--primary-blue); font-weight: 600; }
.step-item.completed .step-label { color: var(--success-green); }

/* ===== 主内容区 ===== */
.main-container {
    max-width: 1400px; margin: 0 auto;
    padding: 35px 20px;
    display: grid; grid-template-columns: 1fr 360px; gap: 28px;
}
@media (max-width: 1200px) { .main-container { grid-template-columns: 1fr; } }

.selection-area { min-height: 600px; }
.step-content { display: none; animation: fadeIn 0.4s ease; }
.step-content.active { display: block; }
.step-header { margin-bottom: 26px; }
.step-header h2 {
    font-size: 1.35rem; font-weight: 700;
    color: var(--primary-blue); margin-bottom: 6px;
}
.step-header p { color: #94a3b8; font-size: 0.9rem; }

/* ===== 卡片 ===== */
.industry-card {
    background: var(--card-bg); border-radius: var(--radius-lg);
    padding: 26px; text-align: center; cursor: pointer;
    transition: all 0.3s ease; border: 2px solid transparent;
    box-shadow: var(--shadow-sm); height: 100%;
}
.industry-card:hover {
    transform: translateY(-4px); box-shadow: var(--shadow-lg);
    border-color: var(--accent-blue);
}
.industry-card.selected {
    border-color: var(--secondary-blue);
    background: var(--light-blue);
    box-shadow: 0 0 0 3px rgba(26,74,122,0.08);
}
.industry-icon {
    width: 54px; height: 54px; margin: 0 auto 12px;
    background: var(--gradient-primary); border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 1.4rem;
}
.industry-name { font-weight: 600; font-size: 1rem; margin-bottom: 6px; color: var(--primary-blue); }
.industry-desc { font-size: 0.8rem; color: #94a3b8; line-height: 1.5; }

.config-card {
    background: var(--card-bg); border-radius: var(--radius-lg);
    padding: 22px; margin-bottom: 18px;
    box-shadow: var(--shadow-sm); border: 1px solid #e2e8f0;
}
.config-card-title {
    font-weight: 600; font-size: 1rem;
    color: var(--primary-blue); margin-bottom: 16px;
    display: flex; align-items: center; gap: 8px;
}

/* ===== 滑块 ===== */
.form-range::-webkit-slider-thumb {
    background: var(--secondary-blue); width: 18px; height: 18px;
    border-radius: 50%; cursor: pointer; -webkit-appearance: none;
    margin-top: -7px; box-shadow: 0 2px 5px rgba(0,0,0,0.18);
}
.form-range::-webkit-slider-runnable-track {
    height: 4px; background: #e2e8f0; border-radius: 2px;
}
.range-value {
    display: inline-block; background: var(--light-blue);
    color: var(--secondary-blue); padding: 3px 10px;
    border-radius: 20px; font-weight: 600; font-size: 0.85rem; margin-left: 8px;
}
.form-switch .form-check-input {
    width: 2.6em; height: 1.3em; cursor: pointer;
}
.form-switch .form-check-input:checked {
    background-color: var(--secondary-blue); border-color: var(--secondary-blue);
}

/* ===== 轨道选择 ===== */
.track-option {
    background: var(--card-bg); border-radius: var(--radius-lg);
    padding: 22px; text-align: center; cursor: pointer;
    transition: all 0.3s ease; border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
}
.track-option:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.track-option.selected {
    border-color: var(--secondary-blue); background: var(--light-blue);
}
.track-svg { width: 100%; height: 110px; margin-bottom: 12px; }

/* ===== 功能项 ===== */
.feature-item {
    display: flex; align-items: center; gap: 14px;
    padding: 14px; background: var(--card-bg);
    border-radius: var(--radius-md); margin-bottom: 10px;
    cursor: pointer; transition: all 0.3s ease;
    border: 2px solid transparent;
}
.feature-item:hover { border-color: var(--accent-blue); box-shadow: var(--shadow-sm); }
.feature-item.selected { border-color: var(--secondary-blue); background: var(--light-blue); }
.feature-icon {
    width: 42px; height: 42px; background: var(--gradient-primary);
    border-radius: var(--radius-sm); display: flex;
    align-items: center; justify-content: center;
    color: white; font-size: 1.1rem; flex-shrink: 0;
}
.feature-info { flex: 1; }
.feature-name { font-weight: 600; color: var(--primary-blue); margin-bottom: 2px; }
.feature-desc { font-size: 0.78rem; color: #94a3b8; }
.feature-price { font-weight: 600; color: var(--warning-orange); font-size: 0.88rem; }

/* ===== 安全等级 ===== */
.safety-level {
    padding: 18px; border-radius: var(--radius-md);
    margin-bottom: 12px; cursor: pointer;
    transition: all 0.3s ease; border: 2px solid transparent;
}
.safety-level:hover { transform: translateX(4px); }
.safety-level.selected { border-color: var(--secondary-blue); box-shadow: var(--shadow-md); }
.safety-basic { background: #f0fdf4; border-left: 4px solid var(--success-green); }
.safety-standard { background: #fffbeb; border-left: 4px solid var(--warning-orange); }
.safety-advanced { background: #fef2f2; border-left: 4px solid var(--danger-red); }

/* ===== 结果面板 ===== */
.result-panel {
    position: sticky; top: 95px;
    background: var(--card-bg); border-radius: var(--radius-xl);
    padding: 26px; box-shadow: var(--shadow-xl);
    border: 1px solid #e2e8f0;
    height: fit-content;
}
.result-header {
    text-align: center; margin-bottom: 20px;
    padding-bottom: 16px; border-bottom: 2px solid #e2e8f0;
}
.result-title { font-size: 1.1rem; font-weight: 700; color: var(--primary-blue); margin-bottom: 4px; }
.result-subtitle { font-size: 0.8rem; color: #94a3b8; }
.result-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 0; border-bottom: 1px solid #f1f5f9;
}
.result-item:last-child { border-bottom: none; }
.result-label { font-size: 0.85rem; color: #94a3b8; display: flex; align-items: center; gap: 7px; }
.result-value { font-weight: 600; color: var(--primary-blue); font-size: 0.9rem; }
.result-value.highlight { color: var(--secondary-blue); font-size: 1rem; }

.price-section {
    background: var(--gradient-primary); color: white;
    border-radius: var(--radius-lg); padding: 22px;
    margin-top: 18px; text-align: center;
}
.price-label { font-size: 0.85rem; opacity: 0.9; margin-bottom: 8px; }
.price-value { font-size: 1.8rem; font-weight: 700; margin-bottom: 4px; }
.price-range { font-size: 0.8rem; opacity: 0.75; }
.price-note { font-size: 0.72rem; opacity: 0.55; margin-top: 8px; }

.recommend-score {
    display: flex; align-items: center; justify-content: center;
    gap: 10px; margin-top: 14px;
}
.score-circle {
    width: 54px; height: 54px; border-radius: 50%;
    background: var(--gradient-accent); display: flex;
    align-items: center; justify-content: center;
    color: white; font-weight: 700; font-size: 1.1rem;
    box-shadow: 0 4px 14px rgba(37,99,168,0.28);
}
.score-text { font-size: 0.85rem; color: #94a3b8; }

/* ===== 按钮 ===== */
.btn-step {
    padding: 11px 28px; border-radius: 50px;
    font-weight: 500; transition: all 0.3s ease;
    display: inline-flex; align-items: center; gap: 7px;
}
.btn-primary-custom {
    background: var(--gradient-primary); border: none; color: white;
    box-shadow: 0 4px 14px rgba(15,39,68,0.28);
}
.btn-primary-custom:hover {
    transform: translateY(-2px); box-shadow: 0 6px 18px rgba(15,39,68,0.38); color: white;
}
.btn-outline-custom {
    background: transparent; border: 2px solid var(--secondary-blue);
    color: var(--secondary-blue);
}
.btn-outline-custom:hover { background: var(--secondary-blue); color: white; }

/* ===== 方案输出 ===== */
.solution-page {
    background: var(--card-bg); border-radius: var(--radius-xl);
    padding: 35px; box-shadow: var(--shadow-lg);
}
.solution-header {
    text-align: center; margin-bottom: 35px;
    padding-bottom: 25px; border-bottom: 2px solid #e2e8f0;
}
.solution-title { font-size: 1.7rem; font-weight: 700; color: var(--primary-blue); margin-bottom: 8px; }
.solution-section { margin-bottom: 26px; }
.solution-section-title {
    font-size: 1.1rem; font-weight: 600; color: var(--primary-blue);
    margin-bottom: 12px; display: flex; align-items: center; gap: 8px;
}
.solution-content { background: #f8fafc; border-radius: var(--radius-md); padding: 18px; }

/* ===== 询盘表单 ===== */
.inquiry-form {
    background: var(--card-bg); border-radius: var(--radius-xl);
    padding: 35px; box-shadow: var(--shadow-lg);
}
.form-floating-custom { position: relative; margin-bottom: 18px; }
.form-floating-custom input,
.form-floating-custom textarea,
.form-floating-custom select {
    width: 100%; padding: 15px 15px 7px;
    border: 2px solid #e2e8f0; border-radius: var(--radius-md);
    font-size: 0.95rem; transition: all 0.3s ease; background: white;
}
.form-floating-custom input:focus,
.form-floating-custom textarea:focus,
.form-floating-custom select:focus {
    outline: none; border-color: var(--secondary-blue);
    box-shadow: 0 0 0 3px rgba(26,74,122,0.08);
}
.form-floating-custom label {
    position: absolute; left: 15px; top: 50%;
    transform: translateY(-50%); color: #a0aec0;
    font-size: 0.95rem; transition: all 0.3s ease;
    pointer-events: none; background: white; padding: 0 4px;
}
.form-floating-custom input:focus + label,
.form-floating-custom input:not(:placeholder-shown) + label,
.form-floating-custom textarea:focus + label,
.form-floating-custom textarea:not(:placeholder-shown) + label,
.form-floating-custom select:focus + label,
.form-floating-custom select:not([value=""]) + label {
    top: 0; font-size: 0.75rem; color: var(--secondary-blue);
}
.form-floating-custom textarea { min-height: 100px; resize: vertical; }
.form-floating-custom textarea + label { top: 18px; }
.form-floating-custom textarea:focus + label,
.form-floating-custom textarea:not(:placeholder-shown) + label { top: 0; }

.upload-area {
    border: 2px dashed #cbd5e0; border-radius: var(--radius-md);
    padding: 35px; text-align: center; cursor: pointer;
    transition: all 0.3s ease;
}
.upload-area:hover { border-color: var(--secondary-blue); background: var(--light-blue); }
.upload-area i { font-size: 2.5rem; color: #a0aec0; margin-bottom: 12px; }
.upload-preview { max-width: 180px; max-height: 180px; border-radius: var(--radius-md); margin-top: 12px; }

/* ===== 动画 ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(25px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-25px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
    from { transform: scale(0); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* ===== 警告提示 ===== */
.alert-custom {
    border-radius: var(--radius-md); padding: 13px 18px;
    margin-bottom: 18px; display: flex; align-items: center; gap: 11px;
}
.alert-warning-custom { background: #fffbeb; border-left: 4px solid var(--warning-orange); color: #b45309; }
.alert-danger-custom { background: #fef2f2; border-left: 4px solid var(--danger-red); color: #b91c1c; }
.alert-info-custom { background: #eff6ff; border-left: 4px solid var(--accent-blue); color: var(--secondary-blue); }

/* ===== 加载 ===== */
.loading-spinner {
    display: inline-block; width: 18px; height: 18px;
    border: 2px solid #e2e8f0; border-top-color: var(--secondary-blue);
    border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 成功动画 ===== */
.success-checkmark {
    width: 72px; height: 72px; border-radius: 50%;
    background: var(--success-green); display: flex;
    align-items: center; justify-content: center;
    color: white; font-size: 2.2rem; margin: 0 auto 18px;
    animation: scaleIn 0.5s ease;
}

/* ===== 悬浮按钮 ===== */
.fab-button {
    position: fixed; bottom: 26px; right: 26px;
    width: 56px; height: 56px; border-radius: 50%;
    background: var(--gradient-primary); color: white;
    border: none; box-shadow: var(--shadow-lg);
    cursor: pointer; display: flex;
    align-items: center; justify-content: center;
    font-size: 1.4rem; transition: all 0.3s ease; z-index: 99;
}
.fab-button:hover { transform: scale(1.08); box-shadow: var(--shadow-xl); }

/* ===== 标签 ===== */
.badge-custom {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 5px 11px; border-radius: 50px;
    font-size: 0.75rem; font-weight: 500;
}
.badge-blue { background: var(--light-blue); color: var(--secondary-blue); }
.badge-green { background: #f0fdf4; color: var(--success-green); }
.badge-orange { background: #fffbeb; color: var(--warning-orange); }

/* ===== 拓扑图 ===== */
.topology-container {
    background: #f8fafc; border-radius: var(--radius-lg);
    padding: 26px; text-align: center;
}
.topology-node {
    display: inline-flex; flex-direction: column;
    align-items: center; justify-content: center;
    width: 90px; height: 90px; background: white;
    border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
    margin: 8px; font-size: 1.7rem; color: var(--secondary-blue);
    position: relative;
}
.topology-node::after {
    content: ''; position: absolute; right: -26px; top: 50%;
    width: 26px; height: 2px; background: #e2e8f0;
}
.topology-node:last-child::after { display: none; }
.topology-node small { font-size: 0.7rem; color: #94a3b8; margin-top: 4px; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .hero-title { font-size: 1.8rem; }
    .hero-stats { flex-direction: column; gap: 18px; }
    .steps-container { overflow-x: auto; padding-bottom: 8px; }
    .step-label { display: none; }
    .main-container { padding: 18px 12px; }
    .result-panel { position: relative; top: 0; margin-top: 26px; }
    .solution-page, .inquiry-form { padding: 22px; }
}

/* ===== 打印 ===== */
@media print {
    .steps-nav, .result-panel, .fab-button, .hero-banner { display: none !important; }
    .main-container { grid-template-columns: 1fr; }
    .step-content { display: block !important; }
}

/* 尺寸输入组 */
.size-input-group { display: flex; gap: 10px; align-items: center; }
.size-input-group input { flex: 1; }
.size-input-group span { color: #94a3b8; font-size: 0.85rem; white-space: nowrap; }

/* 轨道示意图说明 */
.track-desc-box {
    background: #f8fafc; border-radius: var(--radius-md);
    padding: 14px 18px; margin-top: 14px;
    border-left: 3px solid var(--accent-blue);
}
.track-desc-box h6 { font-size: 0.9rem; font-weight: 600; color: var(--primary-blue); margin-bottom: 6px; }
.track-desc-box p { font-size: 0.82rem; color: #64748b; margin: 0; }

/* 节拍参数卡片 */
.beat-param-card {
    background: #f8fafc; border-radius: var(--radius-md);
    padding: 16px; margin-bottom: 12px;
}
.beat-param-card .param-label { font-size: 0.85rem; color: #64748b; margin-bottom: 8px; }
.beat-param-card .param-value { font-size: 1.1rem; font-weight: 600; color: var(--primary-blue); }

/* 多车协同 */
.multi-rgv-badge {
    display: inline-flex; align-items: center; gap: 6px;
    background: #fef3c7; color: #92400e;
    padding: 6px 14px; border-radius: 50px;
    font-size: 0.82rem; font-weight: 500;
}
.print-area, .page-header,.page-footer {
    display: none;
}
/* 打印专用样式 */
@media print {
    @page {
        size: A4;          /* 可选值: A4, A5, letter, landscape(横向) */
        /* margin-top: 2cm; */
        /* margin-bottom: 1.5cm; */
    }
    body{
        background:transparent;
    }
    .page-header {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        text-align: center;
        font-size: 12pt;
    }
    .page-footer {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        text-align: center;
        font-size: 10pt;
    }
    /* 隐藏不需要打印的元素 */
    .no-print, .hero-banner, .steps-nav, .result-panel, #successModal, footer, .step-content:not(.active), .back-to-top{
        display: none !important;
        page-break-before: auto !important;
        page-break-after: auto !important;
        break-before: auto !important;
        break-after: auto !important;
    }
    /* 让打印区域占满可用空间，去除多余边距 */
    .print-area {
        display: block;
        margin: 0;
        padding: 0;
        border: none;
        width: 100%;
    }
    .solution-page {
        background: transparent;
        padding: 0 !important;
        box-shadow:none;
    }
    .solution-content p{
        margin-bottom: 5px;
    }
    @media (min-width: 576px) {
        .col-sm-12 {
            width: 25%;
        }
    }
    .table>:not(caption)>*>* {
        padding: .25rem .5rem;
    }
    /* 可选：强制打印背景颜色和图片（部分浏览器默认不打印背景） */
    * {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}