/* global.css - 页头与页尾共用样式 */
/* ===== CSS 变量（与内页保持一致） ===== */
:root {
    --primary: #1A73E8;
    --primary-dark: #1557B0;
    --primary-light: #E8F0FE;
    --primary-gradient: linear-gradient(135deg, #1A73E8 0%, #1557B0 100%);
    --red: #C41230;
    --red-dark: #9E0D26;
    --red-light: #FDF0F2;
    --red-gradient: linear-gradient(135deg, #C41230 0%, #9E0D26 100%);
    --gray-50: #F8FAFC;
    --gray-100: #F1F4F8;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.08);
    --shadow-xl: 0 24px 64px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.35s cubic-bezier(0.2, 0.95, 0.4, 1);
}
.container {
    max-width: 1680px;
    margin: 0 auto;
    padding: 0 60px;
}

/* ===== 页头样式 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 10px 60px;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}
.header.scrolled {
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 2px 24px rgba(0,0,0,0.04);
}
.header .logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}
.header .logo img {
    height: 36px;
    width: auto;
}
.header .logo .tag {
    font-size: 10px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 2px 14px;
    border-radius: 40px;
    border: 1px solid rgba(26,115,232,0.12);
    white-space: nowrap;
}
.nav {
    display: flex;
    gap: 28px;
    align-items: center;
}
.nav a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
}
.nav a:hover,
.nav a.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}
.nav .phone {
    font-weight: 600;
    color: var(--primary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav .btn-nav {
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    padding: 9px 24px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}
.nav .btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(26,115,232,0.30);
}
.menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--gray-700);
    cursor: pointer;
}
@media (max-width: 1200px) {
    .header { padding: 10px 32px; }
    .nav { gap: 18px; }
    .nav a { font-size: 13px; }
}
@media (max-width: 820px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px 28px;
        gap: 12px;
        box-shadow: 0 20px 48px rgba(0,0,0,0.08);
        border-top: 1px solid var(--gray-200);
    }
    .nav.open { display: flex; }
    .nav a {
        font-size: 15px;
        border-bottom: none;
        padding: 6px 0;
    }
    .nav a:hover { border-bottom: none; }
    .menu-btn { display: block; }
    .nav .phone { display: none; }
    .nav .btn-nav {
        width: 100%;
        text-align: center;
        padding: 10px;
        font-size: 14px;
    }
}
@media (max-width: 480px) {
    .header { padding: 8px 16px; }
    .header .logo img { height: 28px; }
    .header .logo .tag { font-size: 8px; padding: 1px 8px; }
}

/* ===== 页尾样式（联系表单 + 版权） ===== */
.contact-section {
    background: #fff;
    padding: 80px 0;
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 52px;
    align-items: start;
}
.contact-info h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 6px;
}
.contact-info .sub {
    font-size: 15px;
    color: var(--gray-500);
    margin-bottom: 18px;
}
.contact-promises {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
    margin: 16px 0 20px;
}
.contact-promises .promise {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    padding: 14px 10px;
    text-align: center;
    transition: var(--transition);
}
.contact-promises .promise:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
.contact-promises .promise i {
    font-size: 22px;
    color: var(--primary);
    display: block;
    margin-bottom: 4px;
    opacity: 0.6;
}
.contact-promises .promise span {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-700);
    display: block;
}
.contact-promises .promise small {
    font-size: 13px;
    color: var(--gray-400);
    display: block;
    margin-top: 1px;
}
.contact-info .contact-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 8px;
}
.contact-info .contact-details .ci {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: var(--gray-600);
}
.contact-info .contact-details .ci i {
    width: 32px;
    height: 32px;
    background: var(--red-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--red);
    font-size: 14px;
    flex-shrink: 0;
}
.contact-info .contact-details .ci a {
    color: var(--red);
    font-weight: 500;
    transition: color 0.2s;
}
.contact-info .contact-details .ci a:hover {
    color: var(--red-dark);
    text-decoration: underline;
}
.contact-form {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    border: 1px solid var(--gray-200);
}
.contact-form h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--gray-800);
}
.contact-form h3 i { color: var(--red); }
.contact-form .form-group { margin-bottom: 14px; }
.contact-form .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 3px;
}
.contact-form .form-group label .req { color: var(--red); margin-left: 2px; }
.contact-form .form-group input,
.contact-form .form-group textarea,
.contact-form .form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    transition: var(--transition);
}
.contact-form .form-group input:focus,
.contact-form .form-group textarea:focus,
.contact-form .form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26,115,232,0.06);
}
.contact-form .form-group textarea { min-height: 82px; resize: vertical; }
.contact-form .btn-submit {
    background: var(--red-gradient);
    color: #fff;
    border: none;
    padding: 13px 28px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    box-shadow: 0 4px 16px rgba(196,18,48,0.15);
}
.contact-form .btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(196,18,48,0.25);
}
.contact-form .hint {
    font-size: 12px;
    color: var(--gray-400);
    text-align: center;
    margin-top: 10px;
}
.contact-form .hint i { margin-right: 4px; }

.footer {
    background: var(--gray-900);
    color: rgba(255,255,255,0.55);
    padding: 44px 0 28px;
}
.footer .container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 10px;
}
.footer a {
    color: rgba(255,255,255,0.45);
    text-decoration: none;
    font-size: 13px;
    line-height: 2.2;
    display: block;
    transition: color 0.2s;
}
.footer a:hover { color: #fff; }
.footer .brand {
    font-size: 19px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 4px;
}
.footer .brand .blue { color: var(--primary); }
.footer .brand-desc {
    font-size: 13px;
    max-width: 280px;
    line-height: 1.7;
}
.footer .brand-contact {
    font-size: 13px;
    margin-top: 6px;
}
.footer .brand-contact i {
    color: var(--red);
    margin-right: 6px;
}
.footer .bottom {
    grid-column: 1 / -1;
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 20px;
    margin-top: 8px;
    text-align: center;
    font-size: 12px;
    color: rgba(255,255,255,0.28);
}
.footer .bottom a {
    display: inline;
    color: rgba(255,255,255,0.28);
    font-size: 12px;
    margin: 0 6px;
}
.footer .bottom a:hover { color: #fff; }

@media (max-width: 992px) {
    .contact-grid { grid-template-columns: 1fr; gap: 36px; }
    .contact-info h2 { font-size: 1.8rem; }
    .contact-form { padding: 28px 20px; }
    .contact-promises { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 820px) {
    .footer .container { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 640px) {
    .contact-promises { grid-template-columns: 1fr; gap: 8px; }
    .contact-promises .promise {
        padding: 12px 10px;
        display: flex;
        align-items: center;
        gap: 12px;
        text-align: left;
    }
    .contact-promises .promise i { margin-bottom: 0; font-size: 18px; }
    .contact-promises .promise small { display: inline; margin-left: 4px; }
    .footer .container { grid-template-columns: 1fr; gap: 20px; }
}

/* ===== 浮动按钮 & 模态框 ===== */
.float-bar {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
}
.float-bar .btn {
    background: var(--red-gradient);
    color: #fff;
    border: none;
    padding: 12px 26px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    box-shadow: 0 8px 28px rgba(196,18,48,0.25);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}
.float-bar .btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 40px rgba(196,18,48,0.35);
}
.float-bar .btn.wx {
    background: #07c160;
    box-shadow: 0 8px 28px rgba(7,193,96,0.25);
}
.float-bar .btn.wx:hover {
    box-shadow: 0 12px 40px rgba(7,193,96,0.35);
}
@media (max-width: 640px) {
    .float-bar .btn {
        padding: 8px 14px;
        font-size: 12px;
    }
    .float-bar .btn span { display: none; }
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
    display: none;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.modal.active { display: flex; }
.modal-box {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 28px 32px 36px;
    max-width: 360px;
    width: 90%;
    text-align: center;
    position: relative;
    animation: modalIn 0.3s ease;
    box-shadow: var(--shadow-xl);
}
@keyframes modalIn {
    from { transform: scale(0.92) translateY(12px); opacity: 0; }
    to { transform: scale(1) translateY(0); opacity: 1; }
}
.modal-box .close {
    position: absolute;
    top: 10px;
    right: 14px;
    font-size: 22px;
    color: var(--gray-400);
    cursor: pointer;
    background: none;
    border: none;
    transition: color 0.2s;
}
.modal-box .close:hover { color: var(--gray-800); }
.modal-box h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 12px;
}
.modal-box img {
    max-width: 200px;
    margin: 0 auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
}
.modal-box .hint {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 10px;
}