/* ===== 全局变量 ===== */
:root {
    --primary: #1a1a2e;
    --primary-light: #16213e;
    --primary-lighter: #0f3460;
    --accent: #e8432a;
    --accent-hover: #c73520;
    --accent-light: rgba(232,67,42,0.1);
    --text-white: #ffffff;
    --text-light: #f0f0f0;
    --text-muted: #8a8a9a;
    --border-color: #2a2a4a;
    --bg-body: #0f0f1a;
    --bg-card: #1a1a2e;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-body);
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
}
a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; }

/* ===== 通用容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 2rem;
    color: var(--text-white);
    margin-bottom: 12px;
}
.section-title p { color: var(--text-muted); font-size: 1rem; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-light);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-blue {
    background: var(--accent);
    color: #fff;
}
.btn-blue:hover { background: var(--accent-hover); }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-block { display: block; width: 100%; justify-content: center; }

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(15,15,26,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s;
}
.navbar.scrolled {
    background: rgba(15,15,26,0.98);
    border-bottom-color: var(--border-color);
}
.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}
.navbar-brand {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
}
.navbar-brand span { color: var(--accent); }
.navbar-nav { display: flex; gap: 30px; align-items: center; }
.navbar-nav a {
    color: var(--text-muted);
    font-size: 0.95rem;
    position: relative;
}
.navbar-nav a:hover, .navbar-nav a.active { color: var(--text-white); }
.navbar-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0; right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}
.navbar-actions { display: flex; gap: 12px; align-items: center; }
.navbar-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-weight: 600;
}
.navbar-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-weight: 600;
}

/* 手机端菜单 */

@media (max-width: 768px) {
    .navbar-inner { padding: 10px 0; }
    .navbar-brand { font-size: 1rem; }
    .navbar-nav { display: none; }
    .navbar-phone { display: none; }
    
    .navbar-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: rgba(15,15,26,0.98);
        padding: 16px 20px;
        gap: 12px;
        border-bottom: 1px solid var(--border-color);
        z-index: 999;
    }
    .navbar-nav.open a { font-size: 1rem; padding: 8px 0; }
    .navbar-actions { gap: 8px; }
    .navbar-actions .btn-sm { padding: 6px 10px; font-size: 0.8rem; }
}

/* ===== Banner ===== */
.hero-banner {
    position: relative;
    height: 600px;
    overflow: hidden;
    margin-top: 70px;
}
.hero-banner-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
}
.hero-banner-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15,15,26,0.85) 0%, rgba(22,33,62,0.6) 100%);
}
.hero-banner-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}
.hero-banner-content h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.2;
    margin-bottom: 16px;
}
.hero-banner-content p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}
.hero-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}
.hero-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: all 0.3s;
}
.hero-dot.active { background: var(--accent); width: 30px; border-radius: 5px; }
@media (max-width: 768px) {
    .hero-banner { height: 400px; }
    .hero-banner-content h1 { font-size: 1.8rem; }
}

/* ===== 优势卡片 ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.advantage-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s;
}
.advantage-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.advantage-card .icon {
    width: 60px; height: 60px;
    background: var(--accent-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.5rem;
    color: var(--accent);
}
.advantage-card h3 { font-size: 1.1rem; margin-bottom: 8px; color: var(--text-white); }
.advantage-card p { font-size: 0.85rem; color: var(--text-muted); }
@media (max-width: 768px) {
    .advantages-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== 服务卡片 ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s;
}
.service-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.service-card-img {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-lighter));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--accent);
}
.service-card-body { padding: 24px; }
.service-card-body h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--text-white); }
.service-card-body p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px; }
.service-card-body .specs {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
    margin-top: 12px;
}
.service-card-body .specs span::before {
    content: '• ';
    color: var(--accent);
}
@media (max-width: 768px) {
    .services-grid { grid-template-columns: 1fr; }
}

/* ===== 关于我们 ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-text h2 { font-size: 2rem; margin-bottom: 20px; color: var(--text-white); }
.about-text p { color: var(--text-muted); margin-bottom: 16px; line-height: 1.8; }
.about-split {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 50px;
    align-items: center;
}
.about-img-item {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.about-img-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}
.about-img-item:hover img {
    transform: scale(1.02);
}
@media (max-width: 768px) {
    .about-split {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}
.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.stat-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
}
.stat-box .num {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent);
    display: block;
    margin-bottom: 6px;
}
.stat-box .label { font-size: 0.85rem; color: var(--text-muted); }
@media (max-width: 768px) {
    .about-content { grid-template-columns: 1fr; gap: 30px; }
    .about-split .about-images { margin-top: 0; }
}

/* ===== 联系信息 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
}
.contact-info-card h3 { font-size: 1.2rem; margin-bottom: 20px; color: var(--text-white); }
.contact-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 18px;
    font-size: 0.95rem;
}
.contact-item i { color: var(--accent); margin-top: 3px; font-size: 1.1rem; width: 20px; }
.contact-item .label { color: var(--text-muted); font-size: 0.82rem; margin-bottom: 2px; }
.contact-item .value { color: var(--text-white); }
.contact-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
}
.contact-form-card h3 { font-size: 1.2rem; margin-bottom: 20px; color: var(--text-white); }
@media (max-width: 768px) {
    .contact-grid { grid-template-columns: 1fr; }
}

/* ===== 通用表单 ===== */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-white);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}
.form-control:focus {
    outline: none;
    border-color: var(--accent);
}
.form-control::placeholder { color: var(--text-muted); }
textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238a8a9a' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}
select.form-control option { background: var(--primary); color: var(--text-white); }

/* ===== 提示框 ===== */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}
.alert-success { background: rgba(40,167,69,0.15); border: 1px solid var(--success); color: var(--success); }
.alert-error { background: rgba(220,53,69,0.15); border: 1px solid var(--danger); color: var(--danger); }
.alert-info { background: rgba(0,123,255,0.15); border: 1px solid #007bff; color: #5aaaff; }

/* ===== 卡片 ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}
.card-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--text-white);
}
.card-body { padding: 24px; }

/* ===== 页面大标题 ===== */
.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 120px 0 60px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}
.page-header h1 { font-size: 2.2rem; color: var(--text-white); margin-bottom: 10px; }
.page-header p { color: var(--text-muted); font-size: 1rem; }

/* ===== 服务详情页 ===== */
.service-detail {
    max-width: 900px;
    margin: 0 auto;
}
.service-detail-icon {
    text-align: center;
    font-size: 4rem;
    color: var(--accent);
    margin-bottom: 30px;
}
.service-detail h2 { text-align: center; font-size: 2rem; margin-bottom: 30px; color: var(--text-white); }
.service-detail-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px;
}
.service-detail-content p { color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; font-size: 1rem; }
.service-specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 30px;
}
.service-spec-item {
    background: var(--primary-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}
.service-spec-item .label { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 4px; }
.service-spec-item .value { font-size: 1rem; color: var(--accent); font-weight: 600; }
@media (max-width: 768px) {
    .service-specs-grid { grid-template-columns: 1fr; }
    .service-detail-content { padding: 24px; }
}

/* ===== 底部 ===== */
.footer {
    background: var(--primary);
    border-top: 1px solid var(--border-color);
    padding: 40px 0 20px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
}
.footer h4 { font-size: 1rem; margin-bottom: 16px; color: var(--text-white); }
.footer p, .footer a { font-size: 0.85rem; color: var(--text-muted); line-height: 1.8; }
.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-muted);
}
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr; gap: 20px; }
}

/* ===== 返回顶部 ===== */
.float-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px; height: 44px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(232,67,42,0.4);
}
.float-top.visible { opacity: 1; visibility: visible; }
.float-top:hover { background: var(--accent-hover); color: #fff; transform: translateY(-2px); }

/* ===== 动画 ===== */
.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 会员登录 ===== */
.member-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--bg-body) 100%);
}
.member-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}
.member-box h2 { text-align: center; margin-bottom: 8px; color: var(--text-white); }
.member-box .sub { text-align: center; color: var(--text-muted); margin-bottom: 30px; font-size: 0.9rem; }
.member-box .form-group { margin-bottom: 18px; }
.member-box .btn { width: 100%; justify-content: center; padding: 12px; font-size: 1rem; }
.member-box .links {
    text-align: center;
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.member-box .links a { color: var(--accent); }
.member-box .links a:hover { text-decoration: underline; }

/* ===== 报价页 ===== */
.quote-page { padding-top: 70px; min-height: 100vh; }
.quote-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}
.quote-header { text-align: center; margin-bottom: 40px; }
.quote-header h1 { font-size: 2rem; color: var(--text-white); margin-bottom: 10px; }
.quote-header p { color: var(--text-muted); font-size: 1rem; margin-bottom: 6px; }
.quote-header .notice { background: var(--accent-light); border: 1px solid var(--accent); color: var(--accent); padding: 8px 16px; border-radius: 8px; font-size: 0.85rem; display: inline-block; margin-top: 10px; }

/* 报价表格 */
.quote-input-table { width: 100%; border-collapse: collapse; }
.quote-input-table thead th {
    background: var(--primary-light);
    color: var(--text-muted);
    padding: 10px 8px;
    text-align: center;
    font-weight: 600;
    font-size: 0.82rem;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}
.quote-input-table tbody tr { border-bottom: 1px solid var(--border-color); }
.quote-input-table tbody td {
    padding: 8px 6px;
    text-align: center;
    vertical-align: middle;
}
.quote-input-table .td-num {
    color: var(--accent);
    font-weight: 600;
    width: 40px;
}
.quote-input-table input[type="number"],
.quote-input-table input[type="text"] {
    width: 100%;
    min-width: 60px;
    padding: 7px 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--primary);
    color: var(--text-white);
    font-size: 0.85rem;
    text-align: center;
}
.quote-input-table input:focus { outline: none; border-color: var(--accent); }
.quote-input-table select {
    width: 100%;
    min-width: 80px;
    padding: 7px 28px 7px 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--primary);
    color: var(--text-white);
    font-size: 0.85rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' fill='%238a8a9a' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
}
.quote-input-table select option { background: var(--primary); }
.checkbox-cell { width: 50px; }
.checkbox-cell input[type="checkbox"] {
    width: 18px; height: 18px;
    cursor: pointer;
    accent-color: var(--accent);
}
.action-cell { width: 50px; }
.btn-remove-row {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.2s;
}
.btn-remove-row:hover { background: rgba(220,53,69,0.15); }
.btn-add-row {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 12px;
}
.btn-add-row:hover { background: var(--accent-hover); }
.quote-actions { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; }
.quote-actions .btn { padding: 12px 28px; font-size: 1rem; }

/* 报价结果 */
.quote-result-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    margin-top: 30px;
}
.quote-result-panel h3 { font-size: 1.1rem; margin-bottom: 20px; color: var(--text-white); border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }
.quote-result-empty { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.quote-result-empty i { font-size: 3rem; display: block; margin-bottom: 16px; opacity: 0.3; }
.quote-result-empty p { font-size: 0.95rem; }

/* ===== 报价提示条 ===== */
.quote-tip { background: #fff3cd; border: 1px solid #ffc107; border-radius: 8px; padding: 10px 16px; font-size: 0.88rem; color: #856404; margin-bottom: 20px; line-height: 1.8; }
.quote-result-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}
.quote-result-header {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    padding: 14px 16px;
    cursor: pointer;
    gap: 12px;
    background: var(--primary-light);
    transition: background 0.2s;
}
.quote-result-header:hover { background: var(--primary-lighter); }
.quote-result-header .res-num { color: var(--accent); font-weight: 700; min-width: 40px; }
.quote-result-header .res-info { flex: 1; font-size: 0.9rem; color: var(--text-muted); }
.quote-result-header .res-info strong { color: var(--text-white); }
.quote-result-header .res-price { text-align: right; }
.quote-result-header .res-price .unit { font-size: 0.78rem; color: var(--text-muted); }
.quote-result-header .res-price .total { font-size: 1.15rem; font-weight: 700; color: var(--accent); }
.quote-result-header .res-toggle { color: var(--text-muted); transition: transform 0.3s; }
.quote-result-header.expanded .res-toggle { transform: rotate(180deg); }
.quote-result-detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding: 0 14px;
    transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
    background: #0d1117;
    border-top: 0 solid #21262d;
}
.quote-result-detail.expanded {
    max-height: 500px;
    opacity: 1;
    padding: 14px;
    border-top: 1px solid #21262d;
}
.quote-result-detail.expanded .detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px;
}
}
.quote-result-detail .detail-item { display: flex; justify-content: space-between; font-size: 0.82rem; padding: 4px 0; }
.quote-result-detail .detail-item .label { color: var(--text-muted); }
.quote-result-detail .detail-item .value { color: var(--text-light); font-weight: 500; }
.quote-result-detail .detail-item.highlight .value { color: var(--accent); }
.quote-total-box {
    text-align: center;
    padding: 20px;
    border-top: 2px solid var(--border-color);
    margin-top: 10px;
}
.quote-total-box .total-label { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 6px; }
.quote-total-box .total-price { font-size: 2.5rem; font-weight: 800; color: var(--accent); }
.quote-total-box .min-note { color: var(--danger); font-size: 0.82rem; margin-top: 6px; }
.quote-total-box .remark { color: var(--text-muted); font-size: 0.78rem; margin-top: 8px; }
.quote-btn-row { display: flex; gap: 12px; justify-content: center; margin-top: 16px; flex-wrap: wrap; }
.quote-download-btn, .quote-print-btn {
    padding: 10px 24px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--primary-light);
    color: var(--text-light);
    font-size: 0.9rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}
.quote-download-btn:hover, .quote-print-btn:hover { border-color: var(--accent); color: var(--accent); }

/* 会员标识 */
.member-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
}
.member-badge.vip0 { background: rgba(138,138,154,0.15); color: var(--text-muted); }
.member-badge.vip1 { background: rgba(0,123,255,0.15); color: #5aaaff; }
.member-badge.vip2 { background: rgba(192,192,192,0.15); color: #c0c0c0; }
.member-badge.vip3 { background: rgba(255,215,0,0.15); color: #ffd700; }

/* 钢材计算器 */
.steel-calc-btn {
    background: var(--primary-light);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
}
.steel-calc-btn:hover { border-color: var(--accent); color: var(--accent); }

/* 响应式 */
@media (max-width: 768px) {
    .quote-input-table { font-size: 0.78rem; }
    .quote-input-table input[type="number"],
    .quote-input-table input[type="text"] {
        padding: 6px 4px;
        font-size: 16px;
        min-width: 50px;
    }
    .quote-input-table select {
        padding: 6px 24px 6px 4px;
        font-size: 16px;
        min-width: 70px;
    }
    .quote-input-table thead th { padding: 8px 4px; font-size: 0.75rem; }
    .quote-input-table tbody td { padding: 6px 4px; }
    .quote-input-table .td-num { font-size: 0.78rem; width: 32px; }
    .checkbox-cell input[type="checkbox"] { width: 16px; height: 16px; }
    .quote-actions { flex-direction: column; }
    .quote-actions .btn { width: 100%; }
    .form-group { margin-bottom: 12px; }
    .form-group label { font-size: 0.8rem; margin-bottom: 4px; }
    .form-control { font-size: 16px; padding: 8px 12px; }
    .custom-mat-inputs input { font-size: 15px; padding: 6px 8px; }
    .custom-mat-inputs .cm-label { font-size: 0.72rem; }
} */
.floating-buttons {
    position: fixed;
    right: 20px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 998;
}
.float-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #fff;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    transition: all 0.25s;
    cursor: pointer;
    border: none;
}
.float-btn:hover { transform: scale(1.1); color: #fff; }
.float-phone { background: linear-gradient(135deg,#165DFF,#2563EB); }
.float-wechat { background: linear-gradient(135deg,#07c160,#059669); }
.float-top2 { background: var(--accent); }
.float-top2:hover { background: var(--accent-hover); }

/* ===== 微信二维码弹窗 ===== */
.wechat-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}
.wechat-modal.show { display: flex; }
.wechat-modal-content {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    max-width: 340px;
    width: 90%;
    position: relative;
    animation: fadeInUp 0.3s ease;
}
.wechat-modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 1.5rem;
    color: #999;
    cursor: pointer;
    background: none;
    border: none;
    line-height: 1;
}
.wechat-modal-close:hover { color: #333; }
.wechat-modal-content h3 { margin: 0 0 12px; color: #1f2937; font-size: 1.2rem; }
.wechat-modal-content p { color: #666; margin: 0 0 20px; }
.wechat-placeholder {
    border: 2px dashed #07c160;
    border-radius: 12px;
    padding: 24px;
    color: #07c160;
}
.wechat-placeholder i { font-size: 64px; color: #07c160; }
.wechat-placeholder p { color: #444; font-size: 1rem; margin: 8px 0 0; font-weight: 600; }
.wechat-tip { font-size: 0.8rem; color: #999; margin-top: 12px; }

/* ===== 钢材重量计算器弹窗 ===== */
.steel-weight-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}
.steel-weight-modal.show { display: flex; }
.steel-weight-modal-content {
    background: #fff;
    border-radius: 16px;
    padding: 28px;
    max-width: 420px;
    width: 90%;
    position: relative;
    animation: fadeInUp 0.3s ease;
}
.steel-weight-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.steel-weight-modal-header h3 { margin: 0; font-size: 1.1rem; color: #1f2937; }
.steel-weight-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #999;
    cursor: pointer;
    line-height: 1;
}
.steel-weight-modal-close:hover { color: #333; }
.steel-weight-modal-body label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #374151;
    font-size: 0.9rem;
}
.steel-weight-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}
.steel-weight-form-row.full { grid-template-columns: 1fr; }
.steel-weight-form-row input, .steel-weight-form-row select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 0.9rem;
    box-sizing: border-box;
}
.steel-weight-calc-btn {
    width: 100%;
    padding: 10px;
    background: linear-gradient(135deg,#165DFF,#2563EB);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    margin-top: 4px;
}
.steel-weight-calc-btn:hover { opacity: 0.9; }
.steel-weight-result {
    margin-top: 16px;
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 10px;
    padding: 14px;
}
.weight-values { display: flex; gap: 20px; }
.weight-item { text-align: center; flex: 1; }
.weight-value { display: block; font-size: 1.5rem; font-weight: 700; color: #0369a1; }
.weight-unit { font-size: 0.8rem; color: #64748b; }
.weight-item + .weight-item { border-left: 1px solid #bae6fd; }

/* ===== 钢材类型选择器 ===== */
.steel-type-selector { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.steel-type-btn { flex: 1; min-width: 70px; padding: 8px 6px; background: #f3f4f6; border: 1px solid #d1d5db; border-radius: 8px; font-size: 0.82rem; cursor: pointer; transition: all 0.2s; color: #374151; font-weight: 500; text-align: center; }
.steel-type-btn:hover { background: #eff6ff; border-color: #165dff; color: #165dff; }
.steel-type-btn.active { background: linear-gradient(135deg,#165dff,#2563eb); border-color: #165dff; color: #fff; }

/* ===== 材质密度预设 ===== */
.density-presets { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.density-preset-btn { flex: 1; min-width: 70px; padding: 6px 4px; background: #f9fafb; border: 1px solid #e5e7eb; border-radius: 6px; font-size: 0.75rem; cursor: pointer; transition: all 0.2s; color: #374151; text-align: center; }
.density-preset-btn:hover { background: #eff6ff; border-color: #165dff; color: #165dff; }
.density-preset-btn.active { background: linear-gradient(135deg,#165dff,#2563eb); border-color: #165dff; color: #fff; }
.density-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; }
.density-row .form-group { margin-bottom: 0; }

/* ===== 钢材计算器弹窗内的表单行 ===== */
.steel-weight-modal-body .form-group { margin-bottom: 14px; }
.steel-weight-modal-body .form-group label { display: block; font-weight: 600; margin-bottom: 6px; color: #374151; font-size: 0.88rem; }
.steel-weight-modal-body .form-group input { width: 100%; padding: 8px 10px; border: 1px solid #d1d5db; border-radius: 8px; font-size: 0.9rem; box-sizing: border-box; background: #fff; }
.steel-weight-modal-body .form-group input:disabled { background: #f3f4f6; color: #9ca3af; }

/* 重量计算器浮动按钮 */
#weight-calc-toggle {
    position: fixed;
    right: 20px;
    bottom: 190px;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: linear-gradient(135deg,#165DFF,#2563EB);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(22,93,255,0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 2px;
    transition: all 0.25s;
    z-index: 998;
    color: #fff;
}
#weight-calc-toggle:hover { transform: scale(1.12); box-shadow: 0 6px 24px rgba(22,93,255,0.55); }
#weight-calc-toggle span { font-size: 9px; font-weight: 600; letter-spacing: 0.5px; line-height: 1.2; }

/* ===== 报价预览弹窗 ===== */
.quote-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.65);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}
.quote-modal.show { display: flex; }
.quote-modal-content {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    max-width: 800px;
    width: 95%;
    max-height: 95vh;
    overflow-y: auto;
    position: relative;
    animation: fadeInUp 0.3s ease;
}
.quote-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.quote-modal-header h3 { margin: 0; font-size: 1rem; color: #1f2937; }
.quote-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #999;
    cursor: pointer;
    line-height: 1;
}
.quote-modal-close:hover { color: #ef4444; }
#quotePreviewCanvas { border-radius: 8px; max-width: 100%; }
.quote-modal-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 14px;
    flex-wrap: wrap;
}
.quote-modal-actions .btn { padding: 8px 20px; font-size: 0.9rem; }

/* ===== 报价预览图片样式（print-optimized）===== */
.quote-preview-wrap {
    padding: 28px 32px;
    background: #fff;
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    color: #1a1a1a;
    font-size: 13px;
    line-height: 1.6;
}
.quote-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 2px solid #c0392b;
    padding-bottom: 14px;
    margin-bottom: 18px;
}
.quote-preview-title { font-size: 22px; font-weight: 700; color: #c0392b; margin: 0; }
.quote-preview-sub { color: #666; margin: 4px 0 0; font-size: 12px; }
.quote-preview-meta { text-align: right; font-size: 12px; color: #555; }
.quote-preview-meta p { margin: 2px 0; }
.quote-preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    margin-bottom: 16px;
}
.quote-preview-table th {
    background: #c0392b;
    color: #fff;
    padding: 8px 6px;
    text-align: center;
    font-weight: 600;
}
.quote-preview-table td {
    padding: 7px 6px;
    text-align: center;
    border-bottom: 1px solid #eee;
}
.quote-preview-table tr:nth-child(even) td { background: #fdf2f2; }
.quote-preview-total {
    text-align: right;
    font-size: 15px;
    font-weight: 700;
    color: #c0392b;
    margin: 12px 0;
    padding: 8px 0;
    border-top: 2px solid #c0392b;
}
.quote-preview-footer {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: #888;
    border-top: 1px solid #eee;
    padding-top: 12px;
    margin-top: 8px;
}
.quote-preview-footer p { margin: 3px 0; }

/* ===== 打印样式 ===== */
@media print {
    body * { visibility: hidden; }
    .quote-preview-wrap, .quote-preview-wrap * { visibility: visible; }
    .quote-preview-wrap {
        position: fixed;
        left: 0;
        top: 0;
        width: 100%;
        padding: 16px 20px;
        box-sizing: border-box;
    }
    .quote-preview-table { font-size: 11px; }
    .quote-preview-table th, .quote-preview-table td { padding: 5px 4px; white-space: nowrap; }
    .quote-preview-header { flex-wrap: wrap; gap: 8px; }
    .quote-preview-meta { text-align: left; }
    .quote-modal-actions, .quote-modal-close, #weight-calc-toggle, .floating-buttons, .wechat-modal { display: none !important; }
}

/* ===== 自定义材质行 ===== */
.custom-mat-row { display: none; }
.custom-mat-row.show { display: table-row; background: #fff7ed; }
.custom-mat-row td { padding: 6px 8px !important; }
.custom-mat-inputs { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.custom-mat-inputs input {
    width: 80px;
    padding: 4px 8px;
    border: 1px solid #f97316;
    border-radius: 6px;
    font-size: 0.8rem;
}
.custom-mat-inputs input::placeholder { color: #aaa; }
.custom-mat-inputs .cm-label { font-size: 0.75rem; color: #666; white-space: nowrap; }
.material-tag.custom { background: #fed7aa !important; color: #c2410c !important; border: 1px dashed #f97316; }

/* ===== 响应式增强 ===== */
@media (max-width: 768px) {
    .mobile-bottom-nav { display: flex !important; z-index: 1002 !important; }
    body { padding-bottom: 70px; }
    .floating-buttons { display: flex !important; bottom: 90px !important; }
    .float-btn { width: 42px; height: 42px; font-size: 1rem; }
    #weight-calc-toggle { display: none !important; }
    .steel-weight-form-row { grid-template-columns: 1fr; }
    .quote-preview-table { font-size: 11px; }
    .quote-preview-table th, .quote-preview-table td { padding: 5px 3px; }
}

/* ===== 手机端底部固定图标导航栏 ===== */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(255,255,255,0.98);
    border-top: 1px solid #e8e8e8;
    z-index: 1002;
    padding-bottom: env(safe-area-inset-bottom, 0);
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
}
.mobile-bottom-nav .mob-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: #999;
    text-decoration: none;
    font-size: 0.6rem;
    padding: 6px 2px;
    flex: 1;
    transition: color 0.2s;
}
.mobile-bottom-nav .mob-nav-item i {
    font-size: 1.15rem;
    line-height: 1;
}
.mobile-bottom-nav .mob-nav-item.active,
.mobile-bottom-nav .mob-nav-item:hover {
    color: #ff6b35;
}

/* ===== 订单页返回链接 ===== */
.back-link {
    display: inline-block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    margin-bottom: 16px;
    padding: 4px 0;
}
.back-link:hover { color: var(--accent); }