/* ============================================
   天安保安 - 公司官网样式表
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --navy: #0d2740;
    --navy-light: #1a3a5c;
    --navy-dark: #081a2e;
    --gold: #d4a017;
    --gold-light: #e6b53c;
    --gold-dark: #b8870e;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --red: #c0392b;
    --shadow-sm: 0 2px 8px rgba(0,0,0,.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,.12);
    --radius: 8px;
    --radius-lg: 16px;
    --transition: all .3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    color: var(--gray-800);
    line-height: 1.7;
    background: var(--white);
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

/* --- Top Bar --- */
.top-bar {
    background: var(--navy-dark);
    color: rgba(255,255,255,.8);
    font-size: 13px;
    padding: 8px 0;
}
.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.top-bar-left span::before {
    content: "★";
    color: var(--gold);
    margin-right: 6px;
}
.top-bar-right { display: flex; align-items: center; gap: 4px; }
.top-bar-divider { color: rgba(255,255,255,.3); margin: 0 8px; }
.top-bar-login {
    color: rgba(255,255,255,.6);
    text-decoration: none;
    font-size: 13px;
    transition: color .2s;
}
.top-bar-login:hover { color: #d4a017; }

/* --- Header --- */
.header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}
.logo-link { display: flex; align-items: center; gap: 12px; }
.logo-badge { display: flex; }
.logo-text { display: flex; flex-direction: column; }
.logo-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: 2px;
}
.logo-sub {
    font-size: 11px;
    color: var(--gold);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.nav-list { display: flex; gap: 8px; }
.nav-link {
    display: block;
    padding: 10px 18px;
    font-size: 16px;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}
.nav-link:hover { color: var(--navy); background: var(--gray-100); }
.nav-link.active {
    color: var(--navy);
    font-weight: 600;
}
.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--gold);
    border-radius: 2px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.mobile-toggle span {
    width: 26px;
    height: 3px;
    background: var(--navy);
    border-radius: 2px;
    transition: var(--transition);
}
.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* --- Hero Section --- */
.hero {
    position: relative;
    height: 560px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-light) 100%);
}
.hero::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(212,160,23,.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(212,160,23,.1) 0%, transparent 50%);
}
.hero-pattern {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    opacity: .06;
    background-image: repeating-linear-gradient(45deg, var(--gold) 0, var(--gold) 1px, transparent 1px, transparent 30px);
}
.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    max-width: 680px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(212,160,23,.15);
    border: 1px solid rgba(212,160,23,.4);
    color: var(--gold-light);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}
.hero-badge .dot {
    width: 8px; height: 8px;
    background: var(--gold);
    border-radius: 50%;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .4; }
}
.hero h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.hero h1 .highlight { color: var(--gold); }
.hero-desc {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255,255,255,.8);
    margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    font-size: 16px;
    font-weight: 700;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    letter-spacing: .5px;
}
/* 主按钮：金色渐变 + 深色文字 */
.btn-primary {
    background: linear-gradient(135deg, #e6b53c 0%, #d4a017 50%, #b8870e 100%);
    color: #081a2e;
    border-color: #d4a017;
    box-shadow: 0 4px 16px rgba(212,160,23,.45);
}
.btn-primary:hover {
    background: linear-gradient(135deg, #f0c248 0%, #e6b53c 50%, #d4a017 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(212,160,23,.6);
}
/* 描边按钮：白色实底 + 深色文字，与金色按钮形成强对比 */
.btn-outline {
    background: rgba(255,255,255,.95);
    color: #0d2740;
    border-color: rgba(255,255,255,.95);
    backdrop-filter: blur(4px);
}
.btn-outline:hover {
    background: #ffffff;
    border-color: #ffffff;
    color: #0d2740;
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(255,255,255,.25);
}

.hero-shield {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    opacity: .12;
    z-index: 1;
}

/* --- Section Common --- */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
    display: inline-block;
    color: var(--gold-dark);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
}
.section-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 16px;
}
.section-subtitle {
    font-size: 16px;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}
.section-divider {
    width: 60px;
    height: 4px;
    background: var(--gold);
    border-radius: 2px;
    margin: 16px auto 0;
}

/* --- Stats Section --- */
.stats {
    background: var(--navy);
    padding: 60px 0;
    position: relative;
}
.stats::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: repeating-linear-gradient(90deg, transparent, transparent 80px, rgba(255,255,255,.02) 80px, rgba(255,255,255,.02) 81px);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}
.stat-item { text-align: center; color: var(--white); }
.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--gold);
    line-height: 1.2;
    font-family: "Georgia", serif;
}
.stat-suffix { font-size: 20px; color: var(--gold-light); }
.stat-label {
    font-size: 15px;
    color: rgba(255,255,255,.7);
    margin-top: 8px;
}

/* --- About Brief --- */
.about-brief { background: var(--gray-50); }
.about-brief-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.about-brief-img {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}
.about-brief-img::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 70%, rgba(212,160,23,.2) 0%, transparent 60%),
        radial-gradient(circle at 70% 30%, rgba(255,255,255,.05) 0%, transparent 50%);
}
.brief-shield {
    position: relative;
    z-index: 1;
    text-align: center;
}
.brief-shield svg { width: 140px; height: 140px; }
.brief-shield-text {
    color: var(--gold);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 4px;
    margin-top: 12px;
}
.about-brief-content h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 20px;
}
.about-brief-content > p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.9;
    margin-bottom: 16px;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 28px;
}
.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.about-feature-icon {
    width: 40px; height: 40px;
    background: var(--navy);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.about-feature-text { font-size: 14px; font-weight: 600; color: var(--navy); }

/* --- Services Overview --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}
.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gold);
}
.service-card-top {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.service-card-top.bg-navy { background: linear-gradient(135deg, var(--navy), var(--navy-light)); }
.service-card-top.bg-gold { background: linear-gradient(135deg, var(--gold-dark), var(--gold)); }
.service-card-top.bg-dark { background: linear-gradient(135deg, var(--navy-dark), var(--navy)); }
.service-card-top::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .08;
    background-image: repeating-linear-gradient(45deg, var(--white) 0, var(--white) 1px, transparent 1px, transparent 20px);
}
.service-card-icon {
    position: relative;
    z-index: 1;
    color: var(--white);
    text-align: center;
}
.service-card-icon svg { width: 64px; height: 64px; }
.service-card-icon .num {
    display: block;
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    margin-top: 4px;
}
.service-card-body { padding: 28px 24px; }
.service-card-body h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 12px;
}
.service-card-body p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 16px;
}
.service-card-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-card-tags span {
    font-size: 12px;
    padding: 4px 10px;
    background: var(--gray-100);
    color: var(--gray-600);
    border-radius: 4px;
}

/* --- Advantages --- */
.advantages {
    background: var(--navy);
    color: var(--white);
    position: relative;
}
.advantages .section-title { color: var(--white); }
.advantages .section-subtitle { color: rgba(255,255,255,.6); }
.adv-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.adv-card {
    text-align: center;
    padding: 36px 20px;
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}
.adv-card:hover {
    background: rgba(212,160,23,.1);
    border-color: rgba(212,160,23,.3);
    transform: translateY(-4px);
}
.adv-icon {
    width: 70px; height: 70px;
    margin: 0 auto 20px;
    background: rgba(212,160,23,.15);
    border: 2px solid var(--gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}
.adv-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gold-light);
    margin-bottom: 12px;
}
.adv-card p {
    font-size: 14px;
    color: rgba(255,255,255,.6);
    line-height: 1.7;
}

/* --- Partners --- */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}
.partner-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 90px;
}
.partner-item:hover {
    border-color: var(--gold);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}
.partner-icon { font-size: 24px; margin-bottom: 6px; }
.partner-name { font-size: 14px; font-weight: 500; color: var(--gray-700); }

/* --- CTA --- */
.cta-section {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
    padding: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(212,160,23,.1) 0%, transparent 70%);
}
.cta-content { position: relative; z-index: 1; }
.cta-content h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}
.cta-content p {
    font-size: 16px;
    color: rgba(255,255,255,.7);
    margin-bottom: 28px;
}
.cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--gold);
    color: var(--navy-dark);
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 24px;
    font-weight: 700;
    transition: var(--transition);
}
.cta-phone:hover {
    background: var(--gold-light);
    transform: scale(1.03);
    box-shadow: 0 8px 30px rgba(212,160,23,.4);
}

/* --- Page Banner --- */
.page-banner {
    height: 280px;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 70%, rgba(212,160,23,.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(212,160,23,.08) 0%, transparent 50%);
}
.page-banner::after {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .04;
    background-image: repeating-linear-gradient(45deg, var(--gold) 0, var(--gold) 1px, transparent 1px, transparent 30px);
}
.page-banner-content { position: relative; z-index: 1; color: var(--white); }
.page-banner h1 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: 2px;
}
.page-banner .breadcrumb {
    font-size: 14px;
    color: rgba(255,255,255,.6);
}
.page-banner .breadcrumb a:hover { color: var(--gold); }
.page-banner .breadcrumb span { margin: 0 8px; }

/* --- About Page --- */
.about-content { background: var(--white); }
.about-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
    margin-bottom: 60px;
}
.about-text h2 {
    font-size: 26px;
    color: var(--navy);
    margin-bottom: 20px;
    font-weight: 700;
}
.about-text p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 2;
    margin-bottom: 16px;
    text-indent: 2em;
}
.about-text .company-principle {
    margin-top: 24px;
    padding: 20px 28px;
    background: var(--navy);
    color: var(--white);
    border-radius: var(--radius-lg);
    text-align: center;
}
.about-text .company-principle .label {
    font-size: 14px;
    color: var(--gold-light);
    margin-bottom: 8px;
}
.about-text .company-principle .text {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 2px;
}

.about-highlights {
    display: grid;
    gap: 20px;
}
.highlight-card {
    background: var(--gray-50);
    border-left: 4px solid var(--gold);
    padding: 24px 28px;
    border-radius: 0 var(--radius) var(--radius) 0;
    transition: var(--transition);
}
.highlight-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}
.highlight-card .year {
    font-size: 32px;
    font-weight: 800;
    color: var(--gold);
    font-family: "Georgia", serif;
}
.highlight-card h4 {
    font-size: 17px;
    color: var(--navy);
    margin: 8px 0;
    font-weight: 600;
}
.highlight-card p { font-size: 14px; color: var(--gray-500); }

/* Timeline */
.timeline-section { background: var(--gray-50); }
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}
.timeline::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--gold), var(--gray-200));
}
.timeline-item {
    position: relative;
    padding-bottom: 40px;
}
.timeline-item::before {
    content: "";
    position: absolute;
    left: -36px;
    top: 4px;
    width: 14px; height: 14px;
    background: var(--gold);
    border: 3px solid var(--white);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--gold);
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-date {
    font-size: 14px;
    color: var(--gold-dark);
    font-weight: 600;
    margin-bottom: 6px;
}
.timeline-title {
    font-size: 18px;
    color: var(--navy);
    font-weight: 600;
    margin-bottom: 8px;
}
.timeline-desc { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

/* Qualifications */
.qual-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.qual-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}
.qual-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--gold);
}
.qual-badge {
    width: 80px; height: 80px;
    margin: 0 auto 20px;
    background: var(--navy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}
.qual-card h4 {
    font-size: 18px;
    color: var(--navy);
    margin-bottom: 12px;
    font-weight: 600;
}
.qual-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

/* --- Services Page --- */
.service-detail {
    padding: 80px 0;
}
.service-detail:nth-child(even) { background: var(--gray-50); }
.service-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.service-detail-grid.reverse { direction: rtl; }
.service-detail-grid.reverse > * { direction: ltr; }
.service-detail-visual {
    aspect-ratio: 4/3;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.sdv-navy { background: linear-gradient(135deg, var(--navy), var(--navy-light)); }
.sd-v-gold { background: linear-gradient(135deg, var(--gold-dark), var(--gold)); }
.sd-v-dark { background: linear-gradient(135deg, var(--navy-dark), var(--navy)); }
.service-detail-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .08;
    background-image: repeating-linear-gradient(45deg, var(--white) 0, var(--white) 1px, transparent 1px, transparent 20px);
}
.service-detail-visual .big-icon {
    position: relative;
    z-index: 1;
    font-size: 100px;
    color: rgba(255,255,255,.9);
}
.service-detail-text .sd-tag {
    display: inline-block;
    color: var(--gold-dark);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 12px;
}
.service-detail-text h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 20px;
}
.service-detail-text > p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.9;
    margin-bottom: 24px;
}
.service-features-list { display: grid; gap: 14px; }
.service-features-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--gray-700);
}
.service-features-list li .check {
    width: 24px; height: 24px;
    background: var(--navy);
    color: var(--gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
    margin-top: 2px;
}
.service-stats {
    display: flex;
    gap: 32px;
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--gray-200);
}
.service-stat .num {
    font-size: 32px;
    font-weight: 800;
    color: var(--gold);
    font-family: "Georgia", serif;
}
.service-stat .label { font-size: 13px; color: var(--gray-500); }

/* --- Cases Page --- */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}
.case-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}
.case-card-top {
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.case-card-top .icon { font-size: 48px; position: relative; z-index: 1; }
.case-card-top::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .1;
    background-image: repeating-linear-gradient(45deg, var(--white) 0, var(--white) 1px, transparent 1px, transparent 15px);
}
.case-card-body { padding: 20px; }
.case-card-body h4 {
    font-size: 17px;
    color: var(--navy);
    margin-bottom: 8px;
    font-weight: 600;
}
.case-card-body .case-tag {
    font-size: 12px;
    color: var(--gold-dark);
    font-weight: 600;
    margin-bottom: 8px;
}
.case-card-body p { font-size: 13px; color: var(--gray-500); }

.case-category { margin-bottom: 48px; }
.case-category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-200);
}
.case-category-icon {
    width: 50px; height: 50px;
    background: var(--navy);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}
.case-category-header h3 {
    font-size: 22px;
    color: var(--navy);
    font-weight: 700;
}
.case-category-header .count {
    margin-left: auto;
    font-size: 14px;
    color: var(--gold-dark);
    font-weight: 600;
}

/* --- News Page --- */
.news-list {
    display: grid;
    gap: 20px;
}
.news-item {
    display: flex;
    gap: 24px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}
.news-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--gold);
}
.news-date {
    flex-shrink: 0;
    text-align: center;
    width: 80px;
}
.news-date .day {
    font-size: 36px;
    font-weight: 800;
    color: var(--navy);
    font-family: "Georgia", serif;
    line-height: 1;
}
.news-date .month {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 4px;
}
.news-content h4 {
    font-size: 18px;
    color: var(--navy);
    margin-bottom: 10px;
    font-weight: 600;
}
.news-content p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}
.news-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--gold-dark);
    background: rgba(212,160,23,.1);
    padding: 2px 10px;
    border-radius: 4px;
    margin-top: 10px;
}

/* --- Contact Page --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.contact-info-list { display: grid; gap: 24px; }
.contact-info-item {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    border-left: 4px solid var(--gold);
}
.contact-info-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
}
.contact-info-icon {
    width: 56px; height: 56px;
    background: var(--navy);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    flex-shrink: 0;
}
.contact-info-item h4 {
    font-size: 16px;
    color: var(--gray-500);
    margin-bottom: 6px;
    font-weight: 500;
}
.contact-info-item .value {
    font-size: 22px;
    color: var(--navy);
    font-weight: 700;
}
.contact-info-item .sub { font-size: 14px; color: var(--gray-600); margin-top: 4px; }

.contact-form-wrap {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-sm);
}
.contact-form-wrap h3 {
    font-size: 22px;
    color: var(--navy);
    margin-bottom: 24px;
    font-weight: 700;
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 14px;
    color: var(--gray-700);
    margin-bottom: 8px;
    font-weight: 500;
}
.form-group label .req { color: var(--red); }
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-family: inherit;
    transition: var(--transition);
    background: var(--gray-50);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--gold);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(212,160,23,.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-submit {
    width: 100%;
    padding: 14px;
    background: var(--navy);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.form-submit:hover { background: var(--navy-light); }
.form-message {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
    display: none;
}
.form-message.success { background: #d4edda; color: #155724; display: block; }
.form-message.error { background: #f8d7da; color: #721c24; display: block; }

/* --- Map --- */
.map-section {
    background: var(--gray-50);
    padding: 60px 0;
}
.map-container {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--white);
}
.baidu-map-canvas {
    width: 100%;
    height: 400px;
    display: none;
}
.map-fallback {
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #e8f0fe 0%, #d4e3fc 50%, #c2dbfb 100%);
    text-align: center;
    padding: 40px;
}
.map-pin-large {
    font-size: 56px;
    margin-bottom: 16px;
    animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
.map-fallback h3 {
    font-size: 22px;
    color: var(--navy);
    margin-bottom: 8px;
}
.map-fallback p {
    font-size: 16px;
    color: var(--gray-600);
    margin-bottom: 16px;
}
.map-view-link {
    display: inline-block;
    padding: 8px 24px;
    background: var(--navy);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all .3s;
}
.map-view-link:hover {
    background: var(--navy-light);
    transform: translateY(-2px);
}
.map-nav-buttons {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--white);
    flex-wrap: wrap;
}
.btn-nav {
    flex: 1;
    min-width: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    transition: all .3s;
}
.btn-nav-icon { font-size: 20px; }
.btn-nav-baidu {
    background: #3385ff;
    color: #fff;
}
.btn-nav-baidu:hover {
    background: #2a75ed;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(51, 133, 255, .35);
}
.btn-nav-amap {
    background: #00bf6c;
    color: #fff;
}
.btn-nav-amap:hover {
    background: #00a85f;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 191, 108, .35);
}
@media (max-width: 600px) {
    .map-nav-buttons { flex-direction: column; }
    .btn-nav { width: 100%; }
}

/* --- Footer --- */
.footer {
    background: var(--navy-dark);
    color: rgba(255,255,255,.7);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.footer-logo span {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 2px;
}
.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}
.footer-qualifications { display: flex; flex-wrap: wrap; gap: 8px; }
.q-badge {
    font-size: 12px;
    padding: 4px 12px;
    background: rgba(212,160,23,.15);
    color: var(--gold-light);
    border: 1px solid rgba(212,160,23,.3);
    border-radius: 50px;
}
.footer-title {
    font-size: 16px;
    color: var(--white);
    margin-bottom: 20px;
    font-weight: 600;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,.6);
    transition: var(--transition);
}
.footer-links a:hover { color: var(--gold-light); padding-left: 4px; }
.footer-contact li {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}
.footer-contact .fc-icon { font-size: 20px; }
.footer-contact strong {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,.5);
    font-weight: 400;
}
.footer-contact span {
    font-size: 15px;
    color: var(--white);
    font-weight: 500;
}
.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,.4);
}

.footer-bottom .icp {
    margin-top: 6px;
}

.footer-bottom .icp a {
    color: rgba(255,255,255,.4);
    text-decoration: none;
    transition: color .2s;
}

.footer-bottom .icp a:hover {
    color: #d4a017;
}

/* --- Back to Top --- */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 48px; height: 48px;
    background: var(--navy);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-md);
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--gold); color: var(--navy-dark); transform: translateY(-4px); }

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 992px) {
    .nav { display: none; position: absolute; top: 80px; left: 0; right: 0; background: var(--white); box-shadow: var(--shadow-lg); padding: 16px; }
    .nav.active { display: block; }
    .nav-list { flex-direction: column; }
    .nav-link { padding: 14px 18px; }
    .nav-link.active::after { display: none; }
    .mobile-toggle { display: flex; }
    .hero h1 { font-size: 36px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .about-brief-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .adv-grid { grid-template-columns: repeat(2, 1fr); }
    .about-main { grid-template-columns: 1fr; }
    .service-detail-grid { grid-template-columns: 1fr; }
    .service-detail-grid.reverse { direction: ltr; }
    .cases-grid { grid-template-columns: 1fr 1fr; }
    .qual-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .about-features { grid-template-columns: 1fr; }
}
@media (max-width: 576px) {
    .top-bar { display: none; }
    .hero h1 { font-size: 28px; }
    .hero-desc { font-size: 15px; }
    .section-title { font-size: 26px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-number { font-size: 36px; }
    .services-grid { grid-template-columns: 1fr; }
    .adv-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .page-banner h1 { font-size: 28px; }
    .cta-phone { font-size: 18px; padding: 14px 28px; }
}