/* ============================================================
   本老头建站 - 全站样式表
   风格：影视娱乐风 | 黑 + 暗红 + 银灰
   纯原生CSS3，零框架零依赖
   ============================================================ */

/* ---------- CSS变量 ---------- */
:root {
    --black-deep: #080808;
    --black-dark: #0f0f0f;
    --black-base: #141414;
    --black-light: #1c1c1c;
    --black-lighter: #242424;
    --red-deep: #5c0a0a;
    --red-dark: #7a1010;
    --red-base: #a01818;
    --red-accent: #c41e3a;
    --red-light: #dc3545;
    --silver-deep: #6a6a6a;
    --silver-base: #9a9a9a;
    --silver-light: #c0c0c0;
    --silver-lighter: #dcdcdc;
    --white: #f5f5f5;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a0;
    --text-muted: #707070;
    --border-color: rgba(160, 160, 160, 0.15);
    --border-red: rgba(160, 24, 24, 0.4);
    --gradient-dark: linear-gradient(135deg, #080808 0%, #1a0a0a 50%, #0f0f0f 100%);
    --gradient-red: linear-gradient(135deg, #5c0a0a 0%, #a01818 100%);
    --gradient-silver: linear-gradient(135deg, #3a3a3a 0%, #6a6a6a 100%);
    --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-red: 0 4px 20px rgba(160, 24, 24, 0.3);
    --transition-base: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    --font-mono: "Consolas", "Courier New", monospace;
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--black-deep);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 15px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border: 0;
}

a {
    color: var(--silver-light);
    text-decoration: none;
    transition: var(--transition-base);
}

a:hover {
    color: var(--red-accent);
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--white);
}

p {
    margin-bottom: 1em;
}

/* ---------- 通用容器 ---------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-wide {
    max-width: 1440px;
}

.container-narrow {
    max-width: 960px;
}

/* ---------- 滚动渐入动画 ---------- */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ---------- 顶部导航 ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(8, 8, 8, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-base);
}

.site-header.scrolled {
    background: rgba(8, 8, 8, 0.97);
    border-bottom-color: var(--border-red);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    padding: 0 24px;
    max-width: 1440px;
    margin: 0 auto;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.site-logo img {
    height: 44px;
    width: auto;
}

.site-logo span {
    font-size: 20px;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 1px;
}

.site-logo span em {
    font-style: normal;
    color: var(--red-accent);
}

/* 主导航 */
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.main-nav > li {
    position: relative;
}

.main-nav > li > a {
    display: block;
    padding: 10px 16px;
    color: var(--silver-light);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    border-radius: 4px;
    transition: var(--transition-base);
}

.main-nav > li > a:hover,
.main-nav > li.active > a {
    color: var(--white);
    background: rgba(160, 24, 24, 0.2);
}

.main-nav > li > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--red-accent);
    transition: var(--transition-base);
    transform: translateX(-50%);
}

.main-nav > li > a:hover::after,
.main-nav > li.active > a::after {
    width: 60%;
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: rgba(15, 15, 15, 0.98);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-top: 2px solid var(--red-accent);
    border-radius: 0 0 6px 6px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-base);
    box-shadow: var(--shadow-dark);
}

.main-nav > li:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 9px 20px;
    color: var(--text-secondary);
    font-size: 13px;
    transition: var(--transition-base);
}

.dropdown-menu li a:hover {
    color: var(--white);
    background: rgba(160, 24, 24, 0.15);
    padding-left: 26px;
}

/* 头部右侧操作 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--silver-light);
    font-size: 14px;
}

.header-phone strong {
    color: var(--red-accent);
    font-size: 16px;
}

.btn-header-cta {
    padding: 8px 20px;
    background: var(--gradient-red);
    color: var(--white);
    font-size: 13px;
    font-weight: 600;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-header-cta:hover {
    box-shadow: var(--shadow-red);
    transform: translateY(-1px);
    color: var(--white);
}

/* 移动端汉堡按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--silver-light);
    transition: var(--transition-base);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- 通用按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 32px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    text-align: center;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--gradient-red);
    color: var(--white);
}

.btn-primary:hover {
    box-shadow: var(--shadow-red);
    transform: translateY(-2px);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--silver-light);
    border: 1px solid var(--silver-deep);
}

.btn-outline:hover {
    border-color: var(--red-accent);
    color: var(--red-accent);
    background: rgba(160, 24, 24, 0.08);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    background: rgba(160, 24, 24, 0.15);
    border-color: var(--red-accent);
    color: var(--white);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 16px;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 12px;
}

/* ---------- 通用区块标题 ---------- */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-header .label {
    display: inline-block;
    font-size: 12px;
    color: var(--red-accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
    font-weight: 600;
}

.section-header h2 {
    font-size: 36px;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--gradient-red);
    margin: 16px auto 0;
    border-radius: 2px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 640px;
    margin: 0 auto;
}

/* 左对齐标题 */
.section-header-left {
    text-align: left;
    margin-bottom: 40px;
}

.section-header-left h2 {
    font-size: 32px;
    margin-bottom: 12px;
}

.section-header-left h2::after {
    margin: 12px 0 0;
}

/* ---------- Hero Banner ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--black-deep);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: brightness(0.35) contrast(1.1);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        rgba(8, 8, 8, 0.92) 0%,
        rgba(40, 8, 8, 0.7) 45%,
        rgba(8, 8, 8, 0.6) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.hero-text {
    max-width: 680px;
}

.hero-text .hero-label {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(160, 24, 24, 0.25);
    border: 1px solid var(--border-red);
    border-radius: 30px;
    color: var(--red-light);
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 24px;
    font-weight: 600;
}

.hero-text h1 {
    font-size: 52px;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--white);
}

.hero-text h1 em {
    font-style: normal;
    color: var(--red-accent);
}

.hero-text p {
    font-size: 17px;
    color: var(--silver-light);
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero 底部装饰条 */
.hero-bottom-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2;
    background: rgba(8, 8, 8, 0.7);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--border-color);
}

.hero-stats {
    display: flex;
    justify-content: space-around;
    padding: 24px 0;
    max-width: 1280px;
    margin: 0 auto;
}

.hero-stat {
    text-align: center;
}

.hero-stat .num {
    font-size: 32px;
    font-weight: 800;
    color: var(--red-accent);
    display: block;
}

.hero-stat .label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ---------- 左右渐变融合布局模块 ---------- */
.split-section {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.split-section::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 50%;
    background: linear-gradient(135deg, var(--black-dark) 0%, rgba(60, 10, 10, 0.4) 100%);
    z-index: 0;
}

.split-section::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    width: 50%;
    background: linear-gradient(225deg, var(--black-base) 0%, rgba(30, 30, 30, 0.6) 100%);
    z-index: 0;
}

.split-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.split-grid.reverse .split-image {
    order: 2;
}

.split-image {
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: var(--shadow-dark);
}

.split-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.split-image:hover img {
    transform: scale(1.04);
}

.split-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 50%, rgba(160, 24, 24, 0.15) 100%);
    pointer-events: none;
}

.split-text .label {
    color: var(--red-accent);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 16px;
    display: block;
}

.split-text h2 {
    font-size: 34px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.split-text p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 16px;
}

.split-text .feature-list {
    margin: 24px 0;
}

.split-text .feature-list li {
    padding: 8px 0 8px 28px;
    position: relative;
    color: var(--silver-light);
    font-size: 14px;
}

.split-text .feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 16px;
    height: 2px;
    background: var(--red-accent);
}

/* ---------- 卡片网格 ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

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

.card-grid.col-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* 基础卡片 */
.card {
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-base);
    position: relative;
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--border-red);
    box-shadow: var(--shadow-dark);
}

.card-img {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-img img {
    transform: scale(1.08);
}

.card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(8,8,8,0.6) 0%, transparent 50%);
}

.card-body {
    padding: 24px;
}

.card-body h3 {
    font-size: 18px;
    margin-bottom: 10px;
    transition: var(--transition-base);
}

.card:hover .card-body h3 {
    color: var(--red-accent);
}

.card-body p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.7;
    margin-bottom: 0;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 12px;
    color: var(--text-muted);
}

.card-meta .date {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 图标卡片 */
.icon-card {
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.icon-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-red);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.icon-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-red);
    box-shadow: var(--shadow-dark);
}

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

.icon-card .card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(160, 24, 24, 0.12);
    border-radius: 50%;
    border: 1px solid var(--border-red);
    transition: var(--transition-base);
}

.icon-card:hover .card-icon {
    background: var(--gradient-red);
    transform: rotateY(180deg);
}

.icon-card .card-icon svg {
    width: 28px;
    height: 28px;
    fill: var(--red-accent);
    transition: var(--transition-base);
}

.icon-card:hover .card-icon svg {
    fill: var(--white);
}

.icon-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.icon-card p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 0;
}

/* 数字卡片 */
.number-card {
    background: linear-gradient(135deg, var(--black-light) 0%, rgba(60, 10, 10, 0.3) 100%);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 32px;
    text-align: center;
    transition: var(--transition-base);
}

.number-card:hover {
    border-color: var(--border-red);
    transform: translateY(-4px);
}

.number-card .num {
    font-size: 48px;
    font-weight: 800;
    color: var(--red-accent);
    line-height: 1;
    margin-bottom: 8px;
}

.number-card .label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ---------- 页脚 ---------- */
.site-footer {
    background: var(--black-dark);
    border-top: 1px solid var(--border-color);
    padding-top: 70px;
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-red);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px 50px;
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 24px;
    color: var(--white);
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 36px;
    height: 2px;
    background: var(--red-accent);
}

.footer-col p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.8;
}

.footer-about .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-about .footer-logo img {
    height: 36px;
}

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

.footer-links li a {
    color: var(--text-secondary);
    font-size: 13px;
    transition: var(--transition-base);
    display: inline-block;
}

.footer-links li a:hover {
    color: var(--red-accent);
    padding-left: 6px;
}

.footer-contact li {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 13px;
    align-items: flex-start;
}

.footer-contact li svg {
    width: 16px;
    height: 16px;
    fill: var(--red-accent);
    flex-shrink: 0;
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 0;
}

.footer-bottom a {
    color: var(--text-muted);
}

.footer-bottom a:hover {
    color: var(--red-accent);
}

.footer-beian {
    margin-left: 12px;
}

/* ---------- 内页通用 ---------- */
.page-hero {
    position: relative;
    padding: 160px 0 80px;
    text-align: center;
    overflow: hidden;
    background: var(--black-dark);
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: brightness(0.25);
}

.page-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(8,8,8,0.7) 0%, rgba(8,8,8,0.95) 100%);
}

.page-hero-content {
    position: relative;
    z-index: 2;
}

.page-hero h1 {
    font-size: 42px;
    margin-bottom: 16px;
}

.page-hero .breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.page-hero .breadcrumb a {
    color: var(--text-secondary);
}

.page-hero .breadcrumb a:hover {
    color: var(--red-accent);
}

.page-hero .breadcrumb span {
    color: var(--red-accent);
}

.page-section {
    padding: 80px 0;
}

.page-section.alt-bg {
    background: var(--black-dark);
}

/* ---------- 新闻列表样式 ---------- */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.news-item {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 28px;
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-base);
}

.news-item:hover {
    border-color: var(--border-red);
    box-shadow: var(--shadow-dark);
    transform: translateX(4px);
}

.news-item-img {
    height: 100%;
    min-height: 180px;
    overflow: hidden;
}

.news-item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-item:hover .news-item-img img {
    transform: scale(1.06);
}

.news-item-body {
    padding: 24px 28px 24px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-item-body .news-date {
    font-size: 12px;
    color: var(--red-accent);
    margin-bottom: 8px;
    font-weight: 600;
    letter-spacing: 1px;
}

.news-item-body h3 {
    font-size: 20px;
    margin-bottom: 10px;
    transition: var(--transition-base);
}

.news-item:hover .news-item-body h3 {
    color: var(--red-accent);
}

.news-item-body p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 新闻卡片网格（首页用） */
.news-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-base);
}

.news-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-red);
    box-shadow: var(--shadow-dark);
}

.news-card-img {
    height: 180px;
    overflow: hidden;
    position: relative;
}

.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-card-img img {
    transform: scale(1.08);
}

.news-card-body {
    padding: 20px;
}

.news-card-body .news-date {
    font-size: 11px;
    color: var(--red-accent);
    margin-bottom: 8px;
    font-weight: 600;
}

.news-card-body h3 {
    font-size: 16px;
    margin-bottom: 8px;
    line-height: 1.4;
    transition: var(--transition-base);
}

.news-card:hover .news-card-body h3 {
    color: var(--red-accent);
}

.news-card-body p {
    color: var(--text-secondary);
    font-size: 12px;
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- 文章详情页 ---------- */
.article-detail {
    max-width: 860px;
    margin: 0 auto;
}

.article-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.article-header h1 {
    font-size: 34px;
    margin-bottom: 16px;
    line-height: 1.4;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 13px;
    color: var(--text-muted);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-content {
    font-size: 16px;
    line-height: 2;
    color: var(--text-primary);
}

.article-content p {
    margin-bottom: 1.5em;
}

.article-content img {
    width: 100%;
    border-radius: 6px;
    margin: 24px 0;
}

.article-content h2,
.article-content h3 {
    margin: 32px 0 16px;
}

/* 相关新闻 */
.related-news {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.related-news h3 {
    font-size: 22px;
    margin-bottom: 24px;
}

.related-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-item {
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 18px;
    transition: var(--transition-base);
}

.related-item:hover {
    border-color: var(--border-red);
    transform: translateY(-3px);
}

.related-item .date {
    font-size: 11px;
    color: var(--red-accent);
    margin-bottom: 8px;
}

.related-item h4 {
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 0;
    transition: var(--transition-base);
}

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

/* ---------- 表单 ---------- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--black-base);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--red-accent);
    box-shadow: 0 0 0 3px rgba(160, 24, 24, 0.15);
}

.form-control::placeholder {
    color: var(--text-muted);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ---------- 价格表 ---------- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: stretch;
}

.pricing-card {
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition-base);
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.featured {
    border-color: var(--red-accent);
    background: linear-gradient(180deg, rgba(60, 10, 10, 0.3) 0%, var(--black-light) 100%);
    transform: scale(1.04);
}

.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-red);
    color: var(--white);
    font-size: 12px;
    padding: 4px 20px;
    border-radius: 0 0 6px 6px;
    font-weight: 600;
}

.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-dark);
}

.pricing-card.featured:hover {
    transform: scale(1.04) translateY(-6px);
}

.pricing-card .plan-name {
    font-size: 18px;
    color: var(--silver-light);
    margin-bottom: 12px;
    font-weight: 600;
}

.pricing-card .price {
    font-size: 48px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 4px;
}

.pricing-card .price span {
    font-size: 16px;
    color: var(--text-muted);
    font-weight: 400;
}

.pricing-card .price-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 28px;
}

.pricing-features {
    text-align: left;
    margin-bottom: 32px;
    flex-grow: 1;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-features li::before {
    content: '';
    width: 14px;
    height: 14px;
    background: var(--red-accent);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center/contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center/contain no-repeat;
    flex-shrink: 0;
}

/* ---------- 时间线 ---------- */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--red-accent), var(--border-color));
}

.timeline-item {
    position: relative;
    margin-bottom: 36px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 6px;
    width: 12px;
    height: 12px;
    background: var(--red-accent);
    border-radius: 50%;
    border: 3px solid var(--black-deep);
}

.timeline-item .time {
    font-size: 13px;
    color: var(--red-accent);
    font-weight: 600;
    margin-bottom: 6px;
}

.timeline-item h4 {
    font-size: 17px;
    margin-bottom: 8px;
}

.timeline-item p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 0;
}

/* ---------- 标签云 ---------- */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    padding: 6px 16px;
    background: var(--black-base);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-secondary);
    transition: var(--transition-base);
}

.tag:hover {
    border-color: var(--red-accent);
    color: var(--red-accent);
    background: rgba(160, 24, 24, 0.1);
}

/* ---------- 进度条 ---------- */
.progress-bar {
    margin-bottom: 20px;
}

.progress-bar .label {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.progress-bar .label .percent {
    color: var(--red-accent);
    font-weight: 600;
}

.progress-track {
    height: 6px;
    background: var(--black-base);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-red);
    border-radius: 3px;
    transition: width 1s ease;
}

/* ---------- 手风琴 ---------- */
.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--black-light);
}

.accordion-header {
    padding: 18px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-base);
}

.accordion-header:hover {
    background: rgba(160, 24, 24, 0.08);
}

.accordion-header h4 {
    font-size: 15px;
    margin-bottom: 0;
}

.accordion-header .icon {
    width: 20px;
    height: 20px;
    position: relative;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.accordion-header .icon::before,
.accordion-header .icon::after {
    content: '';
    position: absolute;
    background: var(--red-accent);
}

.accordion-header .icon::before {
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    transform: translateY(-50%);
}

.accordion-header .icon::after {
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-header .icon::after {
    transform: translateX(-50%) scaleY(0);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.accordion-item.active .accordion-body {
    max-height: 500px;
}

.accordion-body-inner {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

/* ---------- CTA区块 ---------- */
.cta-section {
    position: relative;
    padding: 80px 0;
    text-align: center;
    overflow: hidden;
}

.cta-section .cta-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: brightness(0.2);
}

.cta-section .cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(40, 8, 8, 0.85) 0%, rgba(8, 8, 8, 0.9) 100%);
}

.cta-section .cta-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 24px;
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--silver-light);
    font-size: 16px;
    margin-bottom: 32px;
}

/* ---------- 步骤流程 ---------- */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
}

.step-item {
    text-align: center;
    padding: 32px 20px;
    position: relative;
}

.step-item .step-num {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-red);
    color: var(--white);
    font-size: 24px;
    font-weight: 800;
    border-radius: 50%;
    position: relative;
    z-index: 2;
}

.step-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 60px;
    right: -50%;
    width: 100%;
    height: 2px;
    background: var(--border-color);
    z-index: 1;
}

.step-item h4 {
    font-size: 17px;
    margin-bottom: 8px;
}

.step-item p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 0;
}

/* ---------- 客户评价 ---------- */
.testimonial-card {
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 32px;
    position: relative;
    transition: var(--transition-base);
}

.testimonial-card:hover {
    border-color: var(--border-red);
    transform: translateY(-4px);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 10px;
    right: 24px;
    font-size: 80px;
    color: rgba(160, 24, 24, 0.2);
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

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

.testimonial-author .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-red);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 16px;
}

.testimonial-author .info .name {
    font-size: 14px;
    color: var(--white);
    font-weight: 600;
}

.testimonial-author .info .role {
    font-size: 12px;
    color: var(--text-muted);
}

/* ---------- Logo墙 ---------- */
.logo-wall {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
    align-items: center;
}

.logo-wall-item {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 70px;
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition-base);
    padding: 0 12px;
    text-align: center;
}

.logo-wall-item:hover {
    border-color: var(--border-red);
    color: var(--silver-light);
}

/* ---------- 联系信息卡片 ---------- */
.contact-info-card {
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 28px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: var(--transition-base);
}

.contact-info-card:hover {
    border-color: var(--border-red);
    transform: translateY(-3px);
}

.contact-info-card .icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: rgba(160, 24, 24, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-info-card .icon svg {
    width: 22px;
    height: 22px;
    fill: var(--red-accent);
}

.contact-info-card h4 {
    font-size: 15px;
    margin-bottom: 6px;
}

.contact-info-card p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 0;
}

/* ---------- 资料下载卡片 ---------- */
.download-card {
    background: var(--black-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: center;
    transition: var(--transition-base);
}

.download-card:hover {
    border-color: var(--border-red);
    transform: translateX(4px);
}

.download-card .file-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    background: var(--gradient-red);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
}

.download-card .file-info {
    flex-grow: 1;
}

.download-card .file-info h4 {
    font-size: 15px;
    margin-bottom: 4px;
}

.download-card .file-info .meta {
    font-size: 12px;
    color: var(--text-muted);
}

.download-card .download-btn {
    padding: 8px 16px;
    background: rgba(160, 24, 24, 0.15);
    border: 1px solid var(--border-red);
    border-radius: 4px;
    color: var(--red-accent);
    font-size: 12px;
    font-weight: 600;
    transition: var(--transition-base);
    flex-shrink: 0;
}

.download-card .download-btn:hover {
    background: var(--gradient-red);
    color: var(--white);
}

/* ---------- 特性对比表 ---------- */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--black-light);
    border-radius: 8px;
    overflow: hidden;
}

.compare-table th,
.compare-table td {
    padding: 14px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.compare-table th {
    background: var(--black-base);
    color: var(--white);
    font-weight: 600;
    font-size: 14px;
}

.compare-table th:first-child {
    text-align: left;
}

.compare-table td:first-child {
    text-align: left;
    color: var(--text-secondary);
    font-weight: 500;
}

.compare-table .highlight {
    color: var(--red-accent);
    font-weight: 600;
}

.compare-table .yes {
    color: #4caf50;
}

.compare-table .no {
    color: var(--text-muted);
}

/* ---------- 回到顶部 ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--gradient-red);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-red);
}

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

.back-to-top:hover {
    transform: translateY(-3px);
}

.back-to-top svg {
    width: 18px;
    height: 18px;
    fill: var(--white);
}

/* ---------- 移动端侧边导航 ---------- */
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    height: 100vh;
    background: var(--black-dark);
    border-left: 1px solid var(--border-color);
    z-index: 999;
    transition: right 0.35s ease;
    overflow-y: auto;
    padding: 80px 0 30px;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav > li > a {
    display: block;
    padding: 14px 24px;
    color: var(--silver-light);
    font-size: 15px;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.mobile-nav > li > a:hover {
    color: var(--red-accent);
    background: rgba(160, 24, 24, 0.1);
    padding-left: 30px;
}

.mobile-nav .mobile-dropdown {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobile-nav .mobile-dropdown.active {
    max-height: 500px;
}

.mobile-nav .mobile-dropdown li a {
    display: block;
    padding: 10px 24px 10px 40px;
    color: var(--text-secondary);
    font-size: 13px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

.mobile-nav .mobile-dropdown li a:hover {
    color: var(--red-accent);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .card-grid.col-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .step-item:not(:last-child)::after {
        display: none;
    }
    .logo-wall {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
}

@media (max-width: 768px) {
    .main-nav, .header-phone, .btn-header-cta {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
    .hero-text h1 {
        font-size: 32px;
    }
    .hero-text p {
        font-size: 15px;
    }
    .hero-stats {
        flex-wrap: wrap;
        gap: 16px;
    }
    .hero-stat .num {
        font-size: 24px;
    }
    .split-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .split-grid.reverse .split-image {
        order: 0;
    }
    .split-image img {
        height: 280px;
    }
    .split-text h2 {
        font-size: 26px;
    }
    .card-grid,
    .card-grid.col-2,
    .card-grid.col-4,
    .news-card-grid,
    .pricing-grid,
    .related-list {
        grid-template-columns: 1fr;
    }
    .pricing-card.featured {
        transform: none;
    }
    .pricing-card.featured:hover {
        transform: translateY(-6px);
    }
    .section-header h2 {
        font-size: 26px;
    }
    .page-hero h1 {
        font-size: 28px;
    }
    .page-hero {
        padding: 130px 0 60px;
    }
    .news-item {
        grid-template-columns: 1fr;
    }
    .news-item-img {
        height: 200px;
    }
    .news-item-body {
        padding: 20px;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .cta-section h2 {
        font-size: 26px;
    }
    .article-header h1 {
        font-size: 24px;
    }
    .steps-grid {
        grid-template-columns: 1fr;
    }
    .logo-wall {
        grid-template-columns: repeat(2, 1fr);
    }
    .split-section {
        padding: 60px 0;
    }
    .page-section {
        padding: 50px 0;
    }
    .compare-table {
        display: block;
        overflow-x: auto;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .header-inner {
        height: 60px;
    }
    .site-logo img {
        height: 36px;
    }
}