/* ============================================
   特防科技广州站 - GPS检测与拆除服务
   暗色专业风 + 暖金色点缀 - 差异化设计
   ============================================ */

:root {
    /* 主背景色系 - 深藏青 */
    --primary-bg: #0f1923;
    --primary-bg-alt: #0b1420;
    --card-bg: #1a2332;
    --card-bg-hover: #1e2a3a;
    --card-bg-elevated: #222f3f;

    /* 暖金色强调 */
    --accent-color: #e8a838;
    --accent-hover: #f0b848;
    --accent-dark: #c78d20;
    --accent-glow: rgba(232, 168, 56, 0.25);
    --accent-subtle: rgba(232, 168, 56, 0.08);

    /* 次强调 - 冷蓝灰 */
    --secondary-accent: #4a8ec9;
    --secondary-glow: rgba(74, 142, 201, 0.15);

    /* 文字颜色 - 浅色系 */
    --text-primary: #e0e6ed;
    --text-secondary: #c0c8d2;
    --text-muted: #8899aa;
    --text-dim: #5a6a7a;

    /* 边框 */
    --border-color: #2a3a4a;
    --border-light: #23333f;
    --border-accent: rgba(232, 168, 56, 0.3);

    /* 渐变 */
    --gradient-hero: linear-gradient(160deg, #0b1420 0%, #0f1923 40%, #131f2e 100%);
    --gradient-accent: linear-gradient(135deg, #e8a838, #f0b848);
    --gradient-card: linear-gradient(180deg, #1a2332 0%, #162030 100%);
    --gradient-section: linear-gradient(180deg, #0f1923 0%, #111d29 50%, #0f1923 100%);
    --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(232, 168, 56, 0.06) 0%, transparent 60%);

    /* 阴影 */
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
    --shadow-accent: 0 4px 20px rgba(232, 168, 56, 0.2);
    --shadow-accent-lg: 0 8px 30px rgba(232, 168, 56, 0.3);

    /* 过渡 */
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

/* ========== Reset ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; }
button { cursor: pointer; border: none; outline: none; font-family: inherit; }

/* ========== Container ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.section {
    padding: 100px 0;
    position: relative;
    background: var(--primary-bg);
}
.section-alt { background: var(--primary-bg-alt); }

.section-title { text-align: center; margin-bottom: 60px; position: relative; }
.section-title h2 {
    font-size: 2.5rem; font-weight: 700; margin-bottom: 15px;
    color: var(--text-primary);
}
.section-title h2 .highlight {
    background: var(--gradient-accent);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.section-title p { color: var(--text-muted); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* 区域顶部微光分隔线 */
.section::after {
    content: ''; position: absolute; top: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

/* ========== Header ========== */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(15, 25, 35, 0.92);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}
.header.scrolled {
    background: rgba(11, 20, 32, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon {
    width: 42px; height: 42px;
    background: var(--gradient-accent); border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-accent);
}
.logo-icon svg { width: 22px; height: 22px; stroke: #0f1923; stroke-width: 2.5; }
.logo-text-wrap { display: flex; flex-direction: column; }
.logo-text-wrap .brand { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); letter-spacing: 1px; }
.logo-text-wrap .sub { font-size: 0.7rem; color: var(--text-dim); letter-spacing: 2px; }

.nav-menu { display: flex; gap: 28px; }
.nav-menu a { color: var(--text-secondary); font-size: 0.95rem; padding: 8px 0; position: relative; }
.nav-menu a::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
    background: var(--gradient-accent); transition: var(--transition);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--accent-color); }
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }

.nav-phone { display: flex; align-items: center; gap: 10px; color: var(--accent-color); font-weight: 600; }
.nav-phone svg { width: 18px; height: 18px; stroke: var(--accent-color); }

.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; padding: 5px; }
.menu-toggle span { width: 24px; height: 2px; background: var(--text-primary); transition: var(--transition); }

/* ========== Buttons ========== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 32px; border-radius: 8px; font-size: 1rem; font-weight: 600;
    transition: var(--transition); position: relative; overflow: hidden;
}
.btn-primary {
    background: var(--gradient-accent); color: #0f1923;
    box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
    transform: translateY(-2px); box-shadow: var(--shadow-accent-lg);
    background: linear-gradient(135deg, #f0b848, #f5c55a);
}

.btn-secondary {
    background: transparent; border: 1px solid var(--border-color);
    color: var(--text-secondary);
}
.btn-secondary:hover { border-color: var(--accent-color); color: var(--accent-color); }

.btn-outline {
    border: 1px solid var(--border-color); color: var(--text-secondary);
    background: transparent;
}
.btn-outline:hover { border-color: var(--accent-color); color: var(--accent-color); }

/* ========== Hero ========== */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; overflow: hidden; padding-top: 80px;
    background: var(--gradient-hero);
}
/* 微网格背景 */
.hero::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(232, 168, 56, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(232, 168, 56, 0.03) 1px, transparent 1px);
    background-size: 60px 60px; pointer-events: none;
}
/* 暖色光晕 */
.hero::after {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 25% 35%, rgba(232, 168, 56, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 75% 65%, rgba(74, 142, 201, 0.06) 0%, transparent 45%);
    pointer-events: none;
}

.hero-content { position: relative; z-index: 1; max-width: 800px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(232, 168, 56, 0.1); border: 1px solid rgba(232, 168, 56, 0.25);
    padding: 8px 18px; border-radius: 50px; font-size: 0.9rem;
    color: var(--accent-color); margin-bottom: 30px;
}
.hero-badge svg { width: 16px; height: 16px; stroke: var(--accent-color); }

.hero h1 {
    font-size: 3.2rem; font-weight: 800; line-height: 1.25;
    margin-bottom: 24px; color: #fff;
}
.hero h1 span {
    background: var(--gradient-accent);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero .hero-desc { font-size: 1.15rem; color: var(--text-muted); margin-bottom: 40px; line-height: 1.9; }
.hero-buttons { display: flex; gap: 15px; flex-wrap: wrap; }

.hero-stats {
    display: flex; gap: 50px; margin-top: 60px; padding-top: 40px;
    border-top: 1px solid var(--border-color);
}
.stat-item h3 { font-size: 2.5rem; font-weight: 700; color: var(--accent-color); margin-bottom: 5px; }
.stat-item p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 0; }

/* 右侧装饰光斑 */
.hero-decoration {
    position: absolute; right: -120px; top: 50%; transform: translateY(-50%);
    width: 550px; height: 550px;
    background: radial-gradient(circle, rgba(232, 168, 56, 0.07) 0%, transparent 70%);
    border-radius: 50%; pointer-events: none;
    animation: decorPulse 5s ease-in-out infinite;
}
@keyframes decorPulse { 0%,100% { opacity: 1; transform: translateY(-50%) scale(1); } 50% { opacity: 0.6; transform: translateY(-50%) scale(1.05); } }

/* ========== Trust Bar ========== */
.trust-bar {
    background: var(--card-bg); padding: 50px 0;
    border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color);
    position: relative;
}
.trust-bar::before {
    content: ''; position: absolute; inset: 0;
    background: var(--gradient-glow); pointer-events: none;
}
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; position: relative; }
.trust-item { text-align: center; }
.trust-number {
    font-size: 2.8rem; font-weight: 700; color: var(--accent-color); margin-bottom: 8px;
}
.trust-label { color: var(--text-muted); font-size: 1rem; }

/* ========== Service Cards ========== */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.service-card {
    background: var(--gradient-card); border: 1px solid var(--border-color);
    border-radius: 16px; padding: 32px; transition: var(--transition);
    box-shadow: var(--shadow-card); position: relative; overflow: hidden;
}
.service-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--gradient-accent); transform: scaleX(0); transform-origin: left;
    transition: var(--transition);
}
.service-card:hover {
    transform: translateY(-6px); border-color: var(--border-accent);
    box-shadow: var(--shadow-card-hover);
    background: var(--card-bg-hover);
}
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
    width: 56px; height: 56px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
    background: var(--accent-subtle); border: 1px solid rgba(232, 168, 56, 0.15);
}
.service-icon svg { width: 28px; height: 28px; stroke: var(--accent-color); stroke-width: 1.8; }

.service-card h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 12px; color: var(--text-primary); }
.service-card p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; margin-bottom: 16px; }
.service-price {
    font-size: 1.25rem; color: var(--accent-color); font-weight: 700;
    padding-top: 16px; border-top: 1px solid var(--border-color);
}

/* ========== News Cards ========== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.news-card {
    background: var(--gradient-card); border: 1px solid var(--border-color);
    border-radius: 16px; overflow: hidden; transition: var(--transition);
    box-shadow: var(--shadow-card);
}
.news-card:hover {
    transform: translateY(-5px); border-color: var(--border-accent);
    box-shadow: var(--shadow-card-hover);
}
.news-image { height: 180px; overflow: hidden; }
.news-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.news-card:hover .news-image img { transform: scale(1.05); }

.news-content { padding: 24px; }
.news-tag {
    display: inline-block; background: var(--accent-subtle); color: var(--accent-color);
    padding: 4px 12px; border-radius: 5px; font-size: 0.8rem; margin-bottom: 12px;
    border: 1px solid rgba(232, 168, 56, 0.15);
}
.news-content h3 {
    font-size: 1.05rem; font-weight: 600; margin-bottom: 10px; line-height: 1.5;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-content h3 a { color: var(--text-primary); transition: var(--transition); }
.news-content h3 a:hover { color: var(--accent-color); }
.news-meta { color: var(--text-dim); font-size: 0.85rem; }

/* ========== Case Cards ========== */
.cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.case-card {
    background: var(--gradient-card); border: 1px solid var(--border-color);
    border-radius: 16px; padding: 30px; transition: var(--transition);
    box-shadow: var(--shadow-card); position: relative; overflow: hidden;
}
.case-card::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
    background: var(--gradient-accent); transform: scaleX(0); transition: var(--transition);
}
.case-card:hover {
    transform: translateY(-5px); border-color: var(--border-accent);
    box-shadow: var(--shadow-card-hover);
}
.case-card:hover::after { transform: scaleX(1); }

.case-type {
    display: inline-block; background: var(--accent-subtle); color: var(--accent-color);
    padding: 4px 12px; border-radius: 5px; font-size: 0.8rem; margin-bottom: 14px;
    border: 1px solid rgba(232, 168, 56, 0.15);
}
.case-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; line-height: 1.5; }
.case-card h3 a { color: var(--text-primary); transition: var(--transition); }
.case-card h3 a:hover { color: var(--accent-color); }
.case-card > p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; line-height: 1.7; }
.case-tag {
    display: inline-block; padding: 4px 10px; border: 1px solid var(--border-color);
    border-radius: 4px; font-size: 0.8rem; color: var(--text-dim);
}

/* ========== Knowledge List ========== */
.knowledge-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }

.knowledge-card {
    background: var(--gradient-card); border: 1px solid var(--border-color);
    border-radius: 12px; padding: 22px 24px; display: flex; gap: 18px;
    align-items: flex-start; transition: var(--transition);
    box-shadow: var(--shadow-card); position: relative; overflow: hidden;
}
.knowledge-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 100%;
    background: var(--gradient-accent); opacity: 0; transition: var(--transition);
}
.knowledge-card:hover { border-color: var(--border-accent); background: var(--card-bg-hover); }
.knowledge-card:hover::before { opacity: 1; }

.knowledge-icon {
    width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    background: var(--accent-subtle); border: 1px solid rgba(232, 168, 56, 0.12);
}
.knowledge-icon svg { width: 22px; height: 22px; stroke: var(--accent-color); }

.knowledge-info h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.knowledge-info h3 a { color: var(--text-primary); transition: var(--transition); }
.knowledge-info h3 a:hover { color: var(--accent-color); }
.knowledge-info p { color: var(--text-muted); font-size: 0.88rem; }

/* ========== Advantages ========== */
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.advantage-card {
    background: var(--gradient-card); border: 1px solid var(--border-color);
    border-radius: 16px; padding: 32px; transition: var(--transition);
    box-shadow: var(--shadow-card); position: relative;
}
.advantage-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(232, 168, 56, 0.2), transparent);
    opacity: 0; transition: var(--transition);
}
.advantage-card:hover {
    border-color: var(--border-accent); transform: translateY(-5px);
    box-shadow: var(--shadow-card-hover);
}
.advantage-card:hover::before { opacity: 1; }

.advantage-icon {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
    background: var(--accent-subtle); border: 1px solid rgba(232, 168, 56, 0.15);
}
.advantage-icon svg { width: 28px; height: 28px; stroke: var(--accent-color); }

.advantage-card h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 12px; color: var(--text-primary); }
.advantage-card p { color: var(--text-muted); line-height: 1.7; font-size: 0.92rem; }

/* ========== Booking ========== */
.booking-section { background: var(--primary-bg-alt); }

.booking-wrapper {
    max-width: 700px; margin: 0 auto;
    background: var(--gradient-card); border: 1px solid var(--border-color);
    border-radius: 20px; padding: 40px;
    box-shadow: var(--shadow-card);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.form-group { margin-bottom: 20px; }
.form-group:last-child { margin-bottom: 0; }

.form-group label { display: block; margin-bottom: 8px; font-size: 0.95rem; color: var(--text-secondary); }
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%; padding: 14px 18px;
    background: var(--primary-bg); border: 1px solid var(--border-color);
    border-radius: 10px; color: var(--text-primary); font-size: 1rem;
    font-family: inherit; transition: var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-color); outline: none;
    box-shadow: 0 0 0 3px rgba(232, 168, 56, 0.1);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group select option { background: var(--card-bg); color: var(--text-primary); }

.form-note { text-align: center; margin-top: 20px; font-size: 0.9rem; color: var(--text-muted); }

/* ========== CTA ========== */
.cta-component {
    padding: 30px 35px; background: var(--gradient-card);
    border: 1px solid var(--border-color); border-radius: 14px;
    display: flex; align-items: center; justify-content: space-between;
    gap: 20px; flex-wrap: wrap;
    box-shadow: var(--shadow-card);
}
.cta-text { flex: 1; min-width: 200px; }
.cta-text h4 { font-size: 1.1rem; color: var(--text-primary); margin-bottom: 5px; }
.cta-text p { font-size: 0.9rem; color: var(--text-muted); }
.cta-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
.cta-buttons .btn {
    padding: 10px 20px; font-size: 0.9rem;
    display: flex; align-items: center; gap: 8px;
}
.cta-buttons .btn svg { width: 16px; height: 16px; }

/* ========== Footer ========== */
.footer {
    background: var(--primary-bg-alt);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px; position: relative;
}
.footer::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(232, 168, 56, 0.15), transparent);
}

.footer-content {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 50px; margin-bottom: 40px;
}
.footer-brand p { color: var(--text-muted); margin-top: 15px; line-height: 1.7; font-size: 0.92rem; }
.footer-brand .logo { margin-bottom: 15px; }
.footer-brand .logo-text-wrap .brand { color: var(--text-primary); }

.footer-column h3 { font-size: 1rem; margin-bottom: 20px; color: var(--text-primary); }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: var(--text-muted); font-size: 0.92rem; }
.footer-links a:hover { color: var(--accent-color); }

.footer-contact li {
    display: flex; align-items: flex-start; gap: 10px; margin-bottom: 15px;
    color: var(--text-muted); font-size: 0.92rem;
}
.footer-contact svg { flex-shrink: 0; margin-top: 3px; color: var(--accent-color); }

.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 30px; border-top: 1px solid var(--border-color);
    color: var(--text-dim); font-size: 0.85rem;
}
.footer-bottom a { color: var(--text-dim); }
.footer-bottom a:hover { color: var(--accent-color); }

/* ========== Floating Buttons ========== */
.floating-buttons {
    position: fixed; right: 20px; bottom: 30px;
    display: flex; flex-direction: column; gap: 12px; z-index: 999;
}
.float-btn {
    width: 52px; height: 52px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #0f1923; transition: var(--transition);
    background: var(--gradient-accent);
    box-shadow: var(--shadow-accent);
}
.float-btn:hover { transform: scale(1.1); box-shadow: var(--shadow-accent-lg); }
.float-btn svg { width: 22px; height: 22px; stroke: #0f1923; }

/* ========== Helpers ========== */
.text-center { text-align: center; }
.mt-4 { margin-top: 40px; }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .services-grid, .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .knowledge-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none; position: absolute; top: 100%; left: 0; right: 0;
        background: rgba(15, 25, 35, 0.98); flex-direction: column;
        padding: 20px; gap: 15px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    }
    .nav-menu.active { display: flex; }
    .menu-toggle { display: flex; }
    .nav-phone { display: none; }

    .hero { min-height: auto; padding: 140px 0 80px; }
    .hero h1 { font-size: 2rem; }
    .hero .hero-desc { font-size: 1rem; }
    .hero-stats { flex-direction: column; gap: 20px; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; }
    .hero-decoration { display: none; }

    .section { padding: 60px 0; }
    .section-title h2 { font-size: 1.8rem; }

    .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .trust-number { font-size: 2.2rem; }
    .services-grid, .advantages-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .knowledge-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }

    .footer-content { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.7rem; }
    .trust-number { font-size: 1.8rem; }
    .floating-buttons { right: 15px; bottom: 20px; }
    .float-btn { width: 46px; height: 46px; }
    .booking-wrapper { padding: 24px; }
}