/*
Theme Name: 博理光伏检测
Theme URI: https://www.bljc-china.com
Description: 武汉博理建筑工程质量检测有限公司 - 光伏检测专题网站主题，支持SEO/GEO优化、搜索流量转化模型、单页式设计、后台可视化配置面板
Version: 1.0.0
Author: 武汉博理
Author URI: https://www.bljc-china.com
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: boli-solar
Domain Path: /languages
Tags: one-column, custom-menu, featured-images, theme-options, translation-ready
*/

/* ========== CSS Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: #333;
    background: #fff;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }

/* ========== Color Variables ========== */
:root {
    --primary: #0d7c3e;
    --primary-dark: #095a2c;
    --primary-light: #12a352;
    --accent: #f0b429;
    --accent-dark: #d49b1f;
    --dark: #1a1a2e;
    --dark-light: #2d2d44;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-500: #6c757d;
    --gray-700: #495057;
    --gray-900: #212529;
    --white: #ffffff;
    --shadow: 0 2px 15px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --radius: 8px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
    --max-width: 1200px;
}

/* ========== Container ========== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== Header / Navbar ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: var(--transition);
}
.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}
.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary);
}
.site-logo .logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
}
.site-logo .logo-img {
    max-height: 42px;
    width: auto;
    display: block;
}
.site-logo .logo-text {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary);
    white-space: nowrap;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-menu a {
    padding: 8px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: 6px;
    transition: var(--transition);
}
.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
    background: rgba(13,124,62,0.06);
}
.nav-cta {
    display: flex;
    align-items: center;
    gap: 12px;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(13,124,62,0.35);
}
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    background: transparent;
    color: var(--primary);
    font-size: 0.95rem;
    font-weight: 600;
    border: 2px solid var(--primary);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}
.nav-phone {
    display: none;
}
/* Mobile hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== Hero Section ========== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(160deg, #f0fdf4 0%, #fff 40%, #fefce8 100%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(13,124,62,0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(240,180,41,0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-text h1 {
    font-size: 2.8rem;
    color: var(--dark);
    margin-bottom: 20px;
    line-height: 1.2;
}
.hero-text h1 span {
    color: var(--primary);
}
.hero-text p {
    font-size: 1.15rem;
    color: var(--gray-700);
    margin-bottom: 32px;
    line-height: 1.8;
}
.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-badges {
    display: flex;
    gap: 20px;
    margin-top: 28px;
}
.hero-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--white);
    border-radius: 50px;
    box-shadow: var(--shadow);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
}
.hero-badge .badge-icon {
    color: var(--accent);
    font-size: 1.1rem;
}
.hero-image {
    position: relative;
}
.hero-image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 4rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.hero-image-placeholder span {
    font-size: 1rem;
    margin-top: 12px;
    opacity: 0.9;
}
.hero-img-real {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--radius-lg);
    display: block;
}
.hero-float-card {
    position: absolute;
    background: var(--white);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: floatY 3s ease-in-out infinite;
}
.hero-float-card:nth-child(2) {
    top: -20px;
    right: -30px;
}
.hero-float-card:nth-child(3) {
    bottom: 40px;
    left: -30px;
    animation-delay: 1.5s;
}
.hero-float-card .float-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}
.hero-float-card .float-icon.green {
    background: rgba(13,124,62,0.1);
    color: var(--primary);
}
.hero-float-card .float-icon.gold {
    background: rgba(240,180,41,0.15);
    color: var(--accent-dark);
}
.hero-float-card .float-text strong {
    display: block;
    font-size: 1.1rem;
    color: var(--dark);
}
.hero-float-card .float-text small {
    font-size: 0.8rem;
    color: var(--gray-500);
}
@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ========== Stats Trust Bar ========== */
.stats-bar {
    padding: 48px 0;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
    position: relative;
}
.stats-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.stat-item {
    text-align: center;
    color: #fff;
}
.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), #fcd34d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}
.stat-number .unit {
    font-size: 1.2rem;
    -webkit-text-fill-color: var(--accent);
}
.stat-label {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.7);
    margin-top: 8px;
}

/* ========== Section Common ========== */
.section {
    padding: 100px 0;
}
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 60px;
}
.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(13,124,62,0.08);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.section-header h2 {
    font-size: 2.2rem;
    color: var(--dark);
    margin-bottom: 16px;
}
.section-header p {
    font-size: 1.05rem;
    color: var(--gray-500);
}
.section-alt {
    background: var(--gray-100);
}

/* ========== Services Section ========== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-200);
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}
.service-card:hover::before {
    transform: scaleX(1);
}
.service-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 20px;
}
.service-icon.green { background: rgba(13,124,62,0.1); color: var(--primary); }
.service-icon.gold { background: rgba(240,180,41,0.12); color: var(--accent-dark); }
.service-icon.teal { background: rgba(20,184,166,0.1); color: #0d9488; }
.service-icon.blue { background: rgba(37,99,235,0.1); color: #2563eb; }
.service-icon.purple { background: rgba(124,58,237,0.1); color: #7c3aed; }
.service-icon.rose { background: rgba(225,29,72,0.1); color: #e11d48; }
.service-card h3 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: 12px;
}
.service-card p {
    font-size: 0.92rem;
    color: var(--gray-500);
    line-height: 1.7;
}
.service-card .service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition);
}
.service-card:hover .service-link {
    gap: 10px;
}

/* ========== About Section ========== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-image {
    position: relative;
}
.about-image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--gray-200), var(--gray-300));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--gray-500);
}
.about-img-real {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--radius-lg);
    display: block;
}
.about-experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--primary);
    color: #fff;
    padding: 20px 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
}
.about-experience-badge .exp-number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}
.about-experience-badge .exp-text {
    font-size: 0.85rem;
    opacity: 0.9;
    margin-top: 4px;
}
.about-text h2 {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 20px;
}
.about-text p {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: 16px;
    line-height: 1.8;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 24px;
}
.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--gray-100);
    border-radius: var(--radius);
}
.about-feature .feature-check {
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
}
.about-feature span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-700);
}

/* ========== Advantages Section ========== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.advantage-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}
.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.advantage-num {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-size: 1.3rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.advantage-card h3 {
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 10px;
}
.advantage-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ========== Qualifications Section ========== */
.qual-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.qual-card {
    text-align: center;
    padding: 32px 20px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-top: 3px solid var(--accent);
    transition: var(--transition);
}
.qual-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.qual-icon {
    font-size: 2.4rem;
    margin-bottom: 14px;
}
.qual-card h4 {
    font-size: 0.95rem;
    color: var(--dark);
    margin-bottom: 6px;
}
.qual-card p {
    font-size: 0.82rem;
    color: var(--gray-500);
}

/* ========== Cases Section ========== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}
.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.case-image {
    width: 100%;
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--gray-200), var(--gray-300));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--gray-500);
}
.case-body {
    padding: 24px;
}
.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(13,124,62,0.08);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 4px;
    margin-bottom: 10px;
}
.case-body h3 {
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 8px;
}
.case-body p {
    font-size: 0.88rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ========== FAQ Piano Section ========== */
.faq-piano {
    max-width: 800px;
    margin: 0 auto;
}
.faq-piano-item {
    border-radius: 8px;
    margin-bottom: 6px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.faq-piano-item:nth-child(odd) {
    background: var(--white);
    border: 1px solid var(--gray-200);
}
.faq-piano-item:nth-child(even) {
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
}
.faq-piano-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    transition: var(--transition);
    user-select: none;
}
.faq-piano-question:hover {
    color: var(--primary);
}
.faq-piano-item:nth-child(even) .faq-piano-question {
    background: rgba(0,0,0,0.02);
}
.faq-piano-toggle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 300;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}
.faq-piano-item.active .faq-piano-toggle {
    transform: rotate(45deg);
    background: var(--accent-dark);
}
.faq-piano-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 24px;
}
.faq-piano-item.active .faq-piano-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}
.faq-piano-answer p {
    font-size: 0.95rem;
    color: var(--gray-700);
    line-height: 1.8;
}

/* ========== Contact Section ========== */
.contact-section {
    background: linear-gradient(160deg, var(--dark) 0%, var(--dark-light) 100%);
    color: #fff;
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}
.contact-info > p {
    font-size: 1.05rem;
    opacity: 0.8;
    margin-bottom: 32px;
}
.contact-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}
.contact-item-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}
.contact-item-text strong {
    display: block;
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 4px;
}
.contact-item-text span {
    font-size: 1rem;
    line-height: 1.5;
}
.contact-item-text a {
    color: #fff;
    transition: opacity 0.2s;
}
.contact-item-text a:hover {
    opacity: 0.8;
}
.contact-form {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 40px;
    border: 1px solid rgba(255,255,255,0.1);
}
.contact-form h3 {
    font-size: 1.3rem;
    margin-bottom: 24px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 6px;
    opacity: 0.8;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius);
    color: #fff;
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,0.4);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    background: rgba(255,255,255,0.12);
}
.form-group select option {
    color: #333;
    background: #fff;
}
.form-group textarea {
    resize: vertical;
    min-height: 100px;
}
.form-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--dark);
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}
.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(240,180,41,0.4);
}
.form-message {
    margin-top: 12px;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    display: none;
}
.form-message.success {
    display: block;
    background: rgba(13,124,62,0.2);
    color: #4ade80;
    border: 1px solid rgba(13,124,62,0.3);
}
.form-message.error {
    display: block;
    background: rgba(239,68,68,0.2);
    color: #fca5a5;
    border: 1px solid rgba(239,68,68,0.3);
}

/* ========== Footer ========== */
.site-footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 48px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-about .footer-logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.footer-about p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 16px;
}
.footer-social {
    display: flex;
    gap: 10px;
}
.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: var(--transition);
    font-size: 0.9rem;
}
.footer-social a:hover {
    background: var(--primary);
}
.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    font-size: 0.88rem;
    transition: var(--transition);
}
.footer-col ul li a:hover {
    color: var(--primary-light);
}
.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 0.82rem;
    opacity: 0.6;
}

/* ========== Floating Phone Button ========== */
.float-phone {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}
.float-phone a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(13,124,62,0.4);
    transition: var(--transition);
    text-decoration: none;
}
.float-phone a:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(13,124,62,0.5);
}
.float-phone .phone-icon {
    animation: phoneRing 2s ease-in-out infinite;
    font-size: 1.2rem;
}
@keyframes phoneRing {
    0%, 100% { transform: rotate(0); }
    10% { transform: rotate(15deg); }
    20% { transform: rotate(-10deg); }
    30% { transform: rotate(10deg); }
    40% { transform: rotate(-5deg); }
    50%, 100% { transform: rotate(0); }
}

/* ========== Back to Top ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 180px;
    width: 44px;
    height: 44px;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--gray-700);
    box-shadow: var(--shadow);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 998;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-text h1 { font-size: 2.2rem; }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .qual-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    html { font-size: 15px; }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 30px 30px;
        box-shadow: -5px 0 30px rgba(0,0,0,0.15);
        transition: right 0.3s ease;
        z-index: 999;
    }
    .nav-menu.active {
        right: 0;
    }
    .nav-menu a {
        width: 100%;
        padding: 12px 0;
        font-size: 1.05rem;
        border-bottom: 1px solid var(--gray-200);
    }
    .hamburger { display: flex; }
    .nav-cta .btn-primary { display: none; }
    .nav-phone { display: block; }
    .hero { padding: 120px 0 60px; }
    .hero-text h1 { font-size: 1.8rem; }
    .hero-btns { flex-direction: column; }
    .hero-btns .btn-primary,
    .hero-btns .btn-outline { justify-content: center; }
    .hero-badges { flex-wrap: wrap; }
    .hero-float-card { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .stat-number { font-size: 2rem; }
    .section { padding: 70px 0; }
    .section-header h2 { font-size: 1.7rem; }
    .services-grid { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .qual-grid { grid-template-columns: 1fr 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form { padding: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .float-phone a { padding: 12px 18px; font-size: 0.9rem; }
    .back-to-top { right: 140px; bottom: 24px; }
}
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-text h1 { font-size: 1.6rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .qual-grid { grid-template-columns: 1fr; }
}

/* ========== Utility ========== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
}
.text-center { text-align: center; }