/* ===== 全局重置与变量 ===== */
:root {
    --primary: #c8102e;          /* 中国红 - 喜庆大气 */
    --primary-dark: #8b0a1f;
    --primary-light: #e63946;
    --gold: #d4af37;             /* 金色 - 高端 */
    --gold-light: #f1c93b;
    --dark: #1a1a2e;
    --dark-soft: #2c2c44;
    --gray: #666;
    --gray-light: #999;
    --bg-gray: #f6f7fb;
    --white: #ffffff;
    --border: #e8e8e8;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 60px rgba(200, 16, 46, 0.15);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 4px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: #333;
    line-height: 1.7;
    background: #fff;
    overflow-x: hidden;
    font-size: 15px;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; outline: none; }

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

.section {
    padding: 90px 0;
    position: relative;
}

.section-gray { background: var(--bg-gray); }

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    text-align: center;
    position: relative;
    margin-bottom: 18px;
    letter-spacing: 2px;
}

.section-title span {
    color: var(--primary);
    position: relative;
}

.section-title span::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--gold));
}

.section-title.left { text-align: left; }

.section-lead {
    color: var(--gray);
    font-size: 16px;
    text-align: center;
    margin-bottom: 30px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 14px 38px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 8px 24px rgba(200, 16, 46, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 30px rgba(200, 16, 46, 0.4);
    color: #fff;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    background: #fff;
    color: var(--dark);
    transform: translateY(-3px);
}

.btn-block { display: block; width: 100%; }

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--gold));
    color: #fff;
    font-weight: 800;
    font-size: 20px;
    border-radius: var(--radius);
    letter-spacing: 1px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-text strong {
    font-size: 18px;
    color: var(--dark);
    font-weight: 800;
    letter-spacing: 2px;
}

.logo-text em {
    font-size: 10px;
    color: var(--gray-light);
    font-style: normal;
    letter-spacing: 1px;
    margin-top: 2px;
}

.nav ul {
    display: flex;
    gap: 6px;
}

.nav a {
    display: block;
    padding: 10px 18px;
    font-size: 15px;
    color: var(--dark);
    font-weight: 500;
    position: relative;
}

.nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 4px;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav a:hover, .nav a.active {
    color: var(--primary);
}

.nav a:hover::after, .nav a.active::after {
    width: 24px;
}

.header-tel {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: var(--radius);
}

.tel-icon {
    font-size: 22px;
    color: var(--gold-light);
}

.header-tel em {
    display: block;
    font-size: 11px;
    font-style: normal;
    opacity: 0.85;
}

.header-tel strong {
    display: block;
    font-size: 18px;
    letter-spacing: 1px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.menu-toggle span {
    width: 26px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero 首屏 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    overflow: hidden;
    margin-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #2c2c44 50%, #0f0f1e 100%);
    z-index: 1;
}

.hero-bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(200, 16, 46, 0.35), transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(212, 175, 55, 0.25), transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.04), transparent 60%);
}

.hero-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Cpath fill='%23ffffff' fill-opacity='0.04' d='M30 0l30 30-30 30L0 30z'/%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3), rgba(0,0,0,0.5));
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    padding: 40px 20px;
}

.hero-title {
    font-size: 56px;
    font-weight: 900;
    letter-spacing: 6px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff, var(--gold-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 22px;
    letter-spacing: 8px;
    margin-bottom: 20px;
    color: #fff;
    font-weight: 300;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 1s ease 0.6s backwards;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    width: 26px;
    height: 44px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 14px;
}

.hero-scroll span {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: #fff;
    border-radius: 2px;
    animation: scrollDown 1.6s infinite;
}

@keyframes scrollDown {
    0% { opacity: 0; top: 8px; }
    50% { opacity: 1; }
    100% { opacity: 0; top: 24px; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 数据统计 ===== */
.stats {
    background: linear-gradient(135deg, var(--dark), var(--dark-soft));
    color: #fff;
    padding: 50px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -15px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
}

.stat-num {
    font-size: 44px;
    font-weight: 800;
    color: var(--gold-light);
    font-family: "Georgia", serif;
}

.stat-item span {
    font-size: 22px;
    color: var(--gold-light);
    margin-left: 2px;
}

.stat-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
    margin-top: 8px;
    letter-spacing: 1px;
}

/* ===== 关于我们 ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 60px;
    align-items: center;
}

.about-image-box {
    height: 460px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image-box::before {
    content: "";
    position: absolute;
    inset: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.about-image-box::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 30% 20%, rgba(212, 175, 55, 0.3), transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(255, 255, 255, 0.1), transparent 50%);
}

.about-tag {
    font-size: 14px;
    letter-spacing: 6px;
    color: var(--gold-light);
    margin-bottom: 16px;
    z-index: 1;
}

.about-image-box p {
    font-size: 24px;
    letter-spacing: 4px;
    font-weight: 600;
    z-index: 1;
}

.about-text .section-title { text-align: left; }

.about-text > p {
    color: var(--gray);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-list {
    margin: 24px 0 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 20px;
}

.about-list li {
    position: relative;
    padding-left: 26px;
    color: var(--dark);
    font-weight: 500;
}

.about-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    width: 18px;
    height: 18px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    text-align: center;
    line-height: 18px;
    font-size: 11px;
    margin-top: 4px;
}

/* ===== 主营业务 ===== */
.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.business-card {
    background: #fff;
    padding: 40px 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.business-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.business-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.business-card:hover::before { transform: scaleX(1); }

.business-icon {
    font-size: 52px;
    margin-bottom: 20px;
    line-height: 1;
}

.business-card h3 {
    font-size: 22px;
    color: var(--dark);
    margin-bottom: 14px;
    font-weight: 700;
}

.business-card > p {
    color: var(--gray);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 18px;
}

.business-card ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
}

.business-card ul li {
    padding: 4px 12px;
    background: var(--bg-gray);
    color: var(--dark);
    font-size: 12px;
    border-radius: 20px;
}

/* ===== 核心优势 ===== */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-item {
    padding: 36px 30px;
    background: #fff;
    border-radius: var(--radius);
    position: relative;
    transition: var(--transition);
    border-left: 4px solid var(--primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.advantage-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.advantage-num {
    font-size: 56px;
    font-weight: 900;
    color: var(--bg-gray);
    font-family: "Georgia", serif;
    position: absolute;
    top: 16px;
    right: 24px;
    line-height: 1;
    transition: var(--transition);
}

.advantage-item:hover .advantage-num {
    color: rgba(200, 16, 46, 0.15);
}

.advantage-item h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 12px;
    font-weight: 700;
    position: relative;
}

.advantage-item p {
    color: var(--gray);
    font-size: 14px;
    line-height: 1.8;
    position: relative;
}

/* ===== 成功案例 ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.case-item {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.case-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.case-image {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.case-bg-1 { background: linear-gradient(135deg, #c8102e, #8b0a1f); }
.case-bg-2 { background: linear-gradient(135deg, #d4af37, #b8941f); }
.case-bg-3 { background: linear-gradient(135deg, #2c2c44, #1a1a2e); }
.case-bg-4 { background: linear-gradient(135deg, #6a4c93, #4a3568); }

.case-image::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.2), transparent 50%);
}

.case-cat {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary);
    font-size: 12px;
    border-radius: 20px;
    font-weight: 600;
}

.case-info {
    padding: 20px 22px;
}

.case-info h3 {
    font-size: 17px;
    color: var(--dark);
    margin-bottom: 8px;
    font-weight: 700;
}

.case-info p {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.7;
}

/* ===== 合作流程 ===== */
.process-flow {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
}

.process-flow::before {
    content: "";
    position: absolute;
    top: 32px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--gold));
    z-index: 0;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.process-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 24px;
    font-weight: 800;
    border-radius: 50%;
    border: 4px solid #fff;
    box-shadow: 0 6px 20px rgba(200, 16, 46, 0.25);
    margin-bottom: 18px;
    transition: var(--transition);
}

.process-step:hover .process-num {
    transform: scale(1.1) rotate(8deg);
    background: linear-gradient(135deg, var(--gold), var(--primary));
}

.process-step h3 {
    font-size: 17px;
    color: var(--dark);
    margin-bottom: 8px;
    font-weight: 700;
}

.process-step p {
    font-size: 13px;
    color: var(--gray);
    padding: 0 8px;
}

/* ===== 联系我们 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info .section-title { text-align: left; }
.contact-info .section-lead { text-align: left; }

.contact-list {
    margin-top: 30px;
}

.contact-list li {
    display: flex;
    align-items: baseline;
    padding: 16px 0;
    border-bottom: 1px dashed var(--border);
}

.contact-label {
    width: 90px;
    color: var(--gray);
    font-size: 14px;
    flex-shrink: 0;
}

.contact-list strong {
    color: var(--dark);
    font-size: 16px;
}

.contact-list li:first-child strong {
    color: var(--primary);
    font-size: 22px;
    font-weight: 800;
}

.contact-form {
    background: #fff;
    padding: 36px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.contact-form h3 {
    font-size: 22px;
    color: var(--dark);
    margin-bottom: 6px;
}

.form-tip {
    color: var(--gray);
    font-size: 13px;
    margin-bottom: 22px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 14px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    background: var(--bg-gray);
    transition: var(--transition);
    margin-bottom: 14px;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}

.contact-form textarea {
    resize: vertical;
}

.form-success {
    margin-top: 12px;
    padding: 12px;
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
    border-radius: var(--radius);
    text-align: center;
    font-size: 14px;
    display: none;
}

.form-success.show { display: block; }

/* ===== 页脚 ===== */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 50px;
}

.footer-about .logo-text strong { color: #fff; }
.footer-about p {
    margin-top: 20px;
    font-size: 14px;
    line-height: 1.8;
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background: var(--primary);
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
}

.footer-col ul li a:hover {
    color: var(--gold-light);
    padding-left: 6px;
}

.footer-contact p {
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-contact strong {
    color: rgba(255, 255, 255, 0.85);
}

.footer-tel {
    color: var(--gold-light) !important;
    font-size: 22px !important;
    font-weight: 700 !important;
    margin: 8px 0 16px !important;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 22px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== 悬浮按钮 ===== */
.float-actions {
    position: fixed;
    right: 20px;
    bottom: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.float-tel, .float-msg, .float-top {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
    transition: var(--transition);
    position: relative;
}

.float-msg { background: var(--gold); }

.float-top {
    background: var(--dark);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.float-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.float-tel span, .float-msg span { font-size: 22px; line-height: 1; }
.float-top span { font-size: 24px; line-height: 1; }

.float-tel em, .float-msg em {
    position: absolute;
    right: 70px;
    background: var(--dark);
    color: #fff;
    padding: 6px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    font-style: normal;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: var(--transition);
}

.float-tel:hover em, .float-msg:hover em {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.float-tel:hover, .float-msg:hover, .float-top:hover {
    transform: translateY(-4px);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .nav { display: none; }
    .header-tel { display: none; }
    .menu-toggle { display: flex; }

    .nav.open {
        display: block;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .nav.open ul {
        flex-direction: column;
        gap: 0;
    }

    .nav.open a {
        padding: 14px 0;
        border-bottom: 1px solid var(--border);
    }

    .hero-title { font-size: 38px; letter-spacing: 4px; }
    .hero-subtitle { font-size: 16px; letter-spacing: 4px; }

    .business-grid,
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }

    .cases-grid { grid-template-columns: repeat(2, 1fr); }

    .about-grid,
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }

    .about-text .section-title,
    .contact-info .section-title { text-align: center; }
    .about-text .section-lead,
    .contact-info .section-lead { text-align: center; }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 768px) {
    .section { padding: 60px 0; }
    .section-title { font-size: 28px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
    .stat-item:nth-child(2)::after { display: none; }
    .stat-num { font-size: 34px; }

    .business-grid,
    .advantage-grid { grid-template-columns: 1fr; }

    .cases-grid { grid-template-columns: 1fr; }

    .process-flow {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px 20px;
    }
    .process-flow::before { display: none; }

    .form-row { grid-template-columns: 1fr; }

    .about-list { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom p { font-size: 12px; line-height: 1.8; }

    .float-actions { right: 12px; bottom: 20px; }
    .float-tel, .float-msg, .float-top { width: 48px; height: 48px; }

    .hero-actions { flex-direction: column; align-items: center; }
    .hero-actions .btn { width: 80%; }
}

/* ===== 滚动显现动画 ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 首页最新动态 ===== */
.news-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.news-item {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.news-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.news-item a {
    display: flex;
    align-items: center;
    padding: 24px;
    gap: 20px;
}

.news-date {
    flex-shrink: 0;
    width: 70px;
    text-align: center;
    border-right: 1px dashed var(--border);
    padding-right: 20px;
}

.news-date strong {
    display: block;
    font-size: 34px;
    color: var(--primary);
    font-weight: 800;
    line-height: 1;
    font-family: "Georgia", serif;
}

.news-date span {
    display: block;
    font-size: 12px;
    color: var(--gray-light);
    margin-top: 6px;
}

.news-info h3 {
    font-size: 17px;
    color: var(--dark);
    margin-bottom: 8px;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-info p {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-item:hover h3 { color: var(--primary); }

/* ===== 内页 Banner ===== */
.page-banner {
    position: relative;
    padding: 120px 0 60px;
    background: linear-gradient(135deg, var(--dark), var(--dark-soft));
    color: #fff;
    text-align: center;
    overflow: hidden;
    margin-top: 80px;
}

.page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(200, 16, 46, 0.3), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(212, 175, 55, 0.25), transparent 50%);
}

.page-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.4));
}

.page-banner .container {
    position: relative;
    z-index: 1;
}

.page-banner h1 {
    font-size: 38px;
    font-weight: 800;
    letter-spacing: 3px;
    margin-bottom: 14px;
    background: linear-gradient(135deg, #fff, var(--gold-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.breadcrumb {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.breadcrumb a { color: rgba(255, 255, 255, 0.9); }
.breadcrumb a:hover { color: var(--gold-light); }
.breadcrumb span { color: rgba(255, 255, 255, 0.5); }

/* ===== 列表页 ===== */
.list-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.list-item {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.list-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.list-image {
    height: 200px;
    overflow: hidden;
    background: var(--bg-gray);
    position: relative;
}

.list-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.list-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-gray), #e0e2ea);
    position: relative;
}

.list-image-placeholder::after {
    content: "NX";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 50px;
    font-weight: 900;
    color: #d4d7de;
}

.list-item:hover .list-image img { transform: scale(1.08); }

.list-info {
    padding: 20px 22px;
}

.list-info h3 {
    font-size: 17px;
    color: var(--dark);
    margin-bottom: 10px;
    font-weight: 700;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.list-info p {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.list-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px dashed var(--border);
    font-size: 13px;
}

.list-date { color: var(--gray-light); }
.list-more { color: var(--primary); font-weight: 500; }
.list-item:hover .list-more { padding-right: 4px; }

/* ===== 分页 ===== */
.pagination {
    margin-top: 50px;
    text-align: center;
}

.pagination ul {
    display: inline-flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
}

.pagination li {
    list-style: none;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--gray);
    font-size: 14px;
    transition: var(--transition);
}

.pagination a:hover,
.pagination .thisclass {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ===== 文章详情页 ===== */
.article-section .container {
    max-width: 900px;
}

.article-header {
    text-align: center;
    padding-bottom: 30px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border);
}

.article-title {
    font-size: 30px;
    color: var(--dark);
    font-weight: 800;
    margin-bottom: 18px;
    line-height: 1.4;
}

.article-meta {
    font-size: 13px;
    color: var(--gray-light);
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 18px;
}

.article-meta span:not(:last-child)::after {
    content: "|";
    margin-left: 18px;
    color: var(--border);
}

.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: #444;
}

.article-body p {
    margin-bottom: 18px;
}

.article-body img {
    max-width: 100%;
    height: auto;
    margin: 20px auto;
    border-radius: var(--radius);
}

.article-body h2,
.article-body h3 {
    color: var(--dark);
    margin: 28px 0 14px;
    font-weight: 700;
}

.article-body h2 { font-size: 22px; }
.article-body h3 { font-size: 18px; }

.article-pagebreak {
    text-align: center;
    margin: 30px 0;
    padding: 16px;
    background: var(--bg-gray);
    border-radius: var(--radius);
}

.article-pagebreak a,
.article-pagebreak span {
    display: inline-block;
    padding: 6px 14px;
    margin: 0 4px;
    border-radius: var(--radius);
    color: var(--gray);
    font-size: 14px;
}

.article-pagebreak .pagecur,
.article-pagebreak a:hover {
    background: var(--primary);
    color: #fff;
}

.article-tags {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px dashed var(--border);
    font-size: 14px;
}

.article-tags strong {
    color: var(--dark);
    margin-right: 8px;
}

.article-tags a {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-gray);
    color: var(--gray);
    margin: 4px 4px 4px 0;
    border-radius: 20px;
    font-size: 13px;
}

.article-tags a:hover {
    background: var(--primary);
    color: #fff;
}

/* 上下篇 */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.article-nav .prev,
.article-nav .next {
    padding: 18px 22px;
    background: var(--bg-gray);
    border-radius: var(--radius);
    font-size: 14px;
}

.article-nav .next { text-align: right; }

.article-nav strong {
    display: block;
    color: var(--gray);
    font-size: 12px;
    margin-bottom: 6px;
}

.article-nav a {
    color: var(--dark);
    font-weight: 500;
}

.article-nav a:hover { color: var(--primary); }

/* 相关推荐 */
.related-posts {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.block-title {
    font-size: 22px;
    color: var(--dark);
    margin-bottom: 24px;
    font-weight: 700;
    position: relative;
    padding-left: 14px;
}

.block-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 22px;
    background: linear-gradient(180deg, var(--primary), var(--gold));
    border-radius: 2px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.related-item {
    background: var(--bg-gray);
    padding: 20px 22px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.related-item:hover {
    background: #fff;
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.related-item h4 {
    font-size: 16px;
    color: var(--dark);
    margin-bottom: 8px;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-item p {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-date {
    font-size: 12px;
    color: var(--gray-light);
}

.related-item:hover h4 { color: var(--primary); }

/* ===== 关于单页 ===== */
.about-page-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    align-items: start;
}

.sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-block {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    margin-bottom: 20px;
}

.sidebar-title {
    padding: 14px 22px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 16px;
    font-weight: 700;
}

.sidebar-nav li a {
    display: block;
    padding: 13px 22px;
    color: var(--dark);
    font-size: 14px;
    border-bottom: 1px dashed var(--border);
    position: relative;
    transition: var(--transition);
}

.sidebar-nav li a::before {
    content: "›";
    margin-right: 8px;
    color: var(--gray-light);
}

.sidebar-nav li a:hover {
    background: var(--bg-gray);
    color: var(--primary);
    padding-left: 28px;
}

.sidebar-nav li:last-child a { border-bottom: none; }

.sidebar-contact {
    padding: 20px 22px;
    font-size: 14px;
}

.sidebar-contact p {
    margin-bottom: 8px;
    color: var(--gray);
}

.sidebar-contact strong {
    color: var(--dark);
    display: block;
    margin-bottom: 4px;
}

.sidebar-tel {
    color: var(--primary) !important;
    font-size: 22px !important;
    font-weight: 800 !important;
    margin: 6px 0 12px !important;
}

.about-content {
    background: #fff;
    padding: 40px 45px;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.content-title {
    font-size: 28px;
    color: var(--dark);
    font-weight: 800;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--primary);
    position: relative;
}

.content-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 60px;
    height: 2px;
    background: var(--gold);
}

.content-body {
    font-size: 15px;
    line-height: 1.9;
    color: #444;
}

.content-body p { margin-bottom: 16px; }
.content-body img {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 16px 0;
}
.content-body h2, .content-body h3 {
    color: var(--dark);
    margin: 24px 0 12px;
    font-weight: 700;
}
.content-body h2 { font-size: 22px; }
.content-body h3 { font-size: 18px; }

/* ===== 响应式(新增页面) ===== */
@media (max-width: 1024px) {
    .list-grid { grid-template-columns: repeat(2, 1fr); }
    .news-list { grid-template-columns: 1fr; }
    .about-page-grid { grid-template-columns: 1fr; }
    .sidebar { position: static; }
}

@media (max-width: 768px) {
    .list-grid { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    .article-nav { grid-template-columns: 1fr; }
    .article-nav .next { text-align: left; }
    .article-title { font-size: 22px; }
    .page-banner { padding: 100px 0 40px; }
    .page-banner h1 { font-size: 26px; }
    .about-content { padding: 24px 20px; }
    .content-title { font-size: 22px; }
    .news-item a { flex-direction: column; align-items: flex-start; }
    .news-date {
        border-right: none;
        border-bottom: 1px dashed var(--border);
        padding-right: 0;
        padding-bottom: 12px;
        display: flex;
        align-items: baseline;
        gap: 8px;
    }
    .news-date strong { font-size: 24px; }
}