/* ============================================================
   1. CSS 变量（设计令牌 / Design Tokens）
   统一管理全局颜色、阴影、渐变，方便后续换肤和维护
   ============================================================ */
:root {
    --primary-blue: #103878;
    --primary-blue-dark: #0a2858;
    --primary-blue-light: rgba(16, 56, 120, 0.08);
    --tech-cyan: #62afc3;
    --tech-cyan-light: rgba(34, 184, 201, 0.12);
    --bg-gray: #0e2a47be;
    --card-white: #FFFFFF;
    --text-dark: #2D3748;
    --text-medium: #4A5568;
    --text-light: #718096;
    --border-light: rgba(148, 196, 255, 0.15);
    --border-medium: rgba(148, 196, 255, 0.3);
    --img-placeholder: #dbeafe;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(16, 56, 120, 0.08);
    --shadow-lg: 0 12px 32px rgba(16, 56, 120, 0.12);
    --gradient-hero: linear-gradient(135deg, #0f2a4d 0%, #0a2540 50%, #0f2a4d 100%);
    --gradient-blue: linear-gradient(135deg, #103878 0%, #1a4a9c 100%);
    --gradient-cyan: linear-gradient(135deg, #55d2e0 0%, #53bcc5 100%);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    min-width: 940px;
    overflow-x: hidden;
    overflow-y: scroll;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-gray);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    min-width: 940px;
}

/* ============================================================
   2. 全局重置与基础样式
   统一盒模型、滚动行为、字体栈与文本防溢出策略
   ============================================================ */
h1,
h2,
h3,
h4,
h5,
h6,
p,
span,
a,
li,
div {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* ---- 滚动条美化：适配深色背景主题 ---- */
section,
footer,
.container,
.navbar {
    overflow: hidden;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--tech-cyan);
}

/* ---- 图片占位符：在真实图片加载前展示斜纹背景 + 文字 ---- */
.img-placeholder {
    background: var(--img-placeholder);
    border: 1px dashed var(--border-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
    overflow: hidden;
    position: relative;
}

.img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(45deg,
            transparent,
            transparent 10px,
            rgba(148, 196, 255, 0.08) 10px,
            rgba(148, 196, 255, 0.08) 20px);
}

.img-placeholder span {
    position: relative;
    z-index: 1;
    padding: 0 1rem;
}

/* ============================================================
   4. 视频占位符（Video Placeholder）
   深色背景 + 播放按钮圆圈，hover 时变亮
   ============================================================ */
/* Video Placeholder */
.video-placeholder {
    background: #2a2a2a;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
    width: 100%;
    height: 100%;
    position: relative;
    cursor: pointer;
    transition: background 0.3s;
}

.video-placeholder:hover {
    background: #333;
}

.video-placeholder .play-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
    transition: background 0.3s;
}

.video-placeholder:hover .play-btn {
    background: rgba(255, 255, 255, 0.25);
}

.video-placeholder .play-btn::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 12px 0 12px 20px;
    border-color: transparent transparent transparent rgba(255, 255, 255, 0.8);
    margin-left: 4px;
}

.video-placeholder .video-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.35);
    margin-top: 0.35rem;
    letter-spacing: 1px;
}

/* ============================================================
   3. 导航栏（Navbar）
   固定顶部，毛玻璃效果，滚动时加阴影；含移动端适配
   ============================================================ */
/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0 5%;
    height: 72px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary-blue);
    text-decoration: none;
    letter-spacing: 1px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 36px;
    width: auto;
    display: block;
}

.logo span {
    color: var(--tech-cyan);
}

.nav-links {
    display: flex;
    flex-wrap: nowrap;
    gap: 2.5rem;
    align-items: center;
    list-style: none;
    flex-shrink: 0;
}

.nav-links a {
    color: var(--text-medium);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
    white-space: nowrap;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--tech-cyan);
    transition: width 0.3s;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links .nav-cta {
    background: var(--gradient-blue);
    color: #ffffff;
    padding: 0.6rem 1.4rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #2e65be 0%, #103878 100%);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--primary-blue);
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 1001;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
}

/* 移动端导航菜单 */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s;
}

.mobile-nav-overlay.active {
    display: block;
    opacity: 1;
}

.mobile-nav-panel {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    max-width: 80vw;
    height: 100vh;
    background: #fff;
    z-index: 1000;
    padding: 80px 2rem 2rem;
    transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
}

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

.mobile-nav-panel a {
    display: block;
    padding: 0.85rem 0;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    border-bottom: 1px solid var(--border-light);
    transition: color 0.3s;
}

.mobile-nav-panel a:hover {
    color: var(--primary-blue);
}

.mobile-nav-panel .nav-cta {
    display: block;
    margin-top: 1rem;
    background: var(--gradient-blue);
    color: #fff !important;
    padding: 0.85rem 1.5rem;
    border-radius: 6px;
    text-align: center;
    border-bottom: none;
}

/* ============================================================
   5. 通用布局（Container / Section Header / Fade-Up）
   ============================================================ */
/* Common */
section {
    width: 100%;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.section-header h2::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 28px;
    background: var(--tech-cyan);
    border-radius: 2px;
}

.section-header p {
    color: var(--text-light);
    font-size: 1rem;
}

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, opacity;
}

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

/* ============================================================
   6. Hero 头部区域
   全屏渐变背景 + 左右两栏布局（文案 / 图片），含徽章和 CTA 按钮
   ============================================================ */
/* Hero */
.hero {
    min-height: 100vh;
    padding-top: 72px;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: radial-gradient(circle at 80% 50%, rgba(34, 184, 201, 0.08) 0%, transparent 60%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 0.75fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
    padding: 2rem 0;
}

.hero-text h1 {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    line-height: 1.25;
    color: #ffffff;
    margin-bottom: 1.25rem;
}

.hero-text h1 .highlight {
    color: var(--tech-cyan);
}

.hero-sub {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2rem;
    max-width: 520px;
    line-height: 1.7;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
    justify-content: flex-start;
}

.hero-badge {
    padding: 0.4rem 1rem;
    background: var(--tech-cyan-light);
    color: var(--tech-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    border: 1px solid rgba(34, 184, 201, 0.2);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.9rem 2rem;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient-blue);
    color: #fff;
    border: none;
    box-shadow: 0 4px 12px rgba(16, 56, 120, 0.25);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 1.5px solid var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue-light);
}

.hero .btn-outline {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.6);
}

.hero .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
}

.hero-visual {
    height: 480px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-visual .img-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 20px;
    font-size: 1rem;
}

/* ========== About 关于我们 ========== */
/* About */
.about {
    padding: 6rem 0;
    background: #fff;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-medium);
    line-height: 1.8;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.about-text strong {
    color: var(--primary-blue);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.about-stat {
    text-align: center;
    padding: 1rem;
    background: #e6f0ff;
    border-radius: 12px;
}

.about-stat h4 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.about-stat span {
    font-size: 0.85rem;
    color: var(--text-light);
}

.about-visual {
    height: 400px;
    border-radius: 16px;
    overflow: hidden;
}

.about-visual .img-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 16px;
}

/* ========== Certificates 资质荣誉 ========== */
/* Certificates */
.certificates {
    margin-top: 4rem;
}

.cert-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.cert-header h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.cert-header p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.cert-card {
    background: #f0f7ff;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-align: center;
    padding: 1.25rem;
}

.cert-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.cert-img {
    width: 100%;
    aspect-ratio: 3/4;
    background: var(--img-placeholder);
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.cert-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 8px;
}

.cert-card h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.25rem;
}

.cert-card span {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* ========== Business 业务范围 ========== */
/* Business */
.business {
    padding: 6rem 0;
    background: var(--bg-gray);
}

.biz-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.biz-card {
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    display: flex;
    flex-direction: column;
}

.biz-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--tech-cyan));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
}

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

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

.biz-img {
    height: 160px;
}

.biz-img .img-placeholder {
    width: 100%;
    height: 100%;
    border: none;
    border-bottom: 1px solid var(--border-light);
}

.biz-info {
    padding: 1.75rem;
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.biz-icon {
    width: 56px;
    height: 56px;
    margin: -28px auto 1rem;
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    font-size: 1.5rem;
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-sm);
}

.biz-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    min-height: 1.6em;
}

.biz-info p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* Solutions (Horizontal Carousel) */
.solutions {
    padding: 6rem 0;
    background: #fff;
}

.solution-carousel {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0;
}

.solution-carousel-viewport {
    flex: 1;
    overflow: hidden;
    cursor: grab;
}

.solution-carousel-viewport:active {
    cursor: grabbing;
}

.solution-carousel-viewport.dragging {
    cursor: grabbing;
    user-select: none;
}

.solution-carousel-track {
    display: flex;
    gap: 0;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.solution-slide {
    flex: 0 0 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 0 2px;
}

.solution-card {
    display: flex;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s, transform 0.3s;
    min-height: 160px;
}

.solution-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.solution-card.reverse {
    flex-direction: row-reverse;
}

.solution-card-img {
    flex: 0 0 280px;
    overflow: hidden;
    background: #f0f4fa;
}

.solution-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s;
}

.solution-card:hover .solution-card-img img {
    transform: scale(1.05);
}

.solution-card-body {
    flex: 1;
    padding: 1.25rem 1.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.solution-card-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.solution-card-body h3::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 20px;
    background: var(--tech-cyan);
    border-radius: 2px;
    flex-shrink: 0;
}

.solution-card-body p {
    color: var(--text-medium);
    line-height: 1.7;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.solution-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.solution-tag {
    padding: 0.25rem 0.65rem;
    background: var(--primary-blue-light);
    color: var(--primary-blue);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    white-space: nowrap;
}

/* Carousel Arrows */
.solution-carousel-arrow {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--primary-blue);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s, box-shadow 0.25s, opacity 0.3s;
    z-index: 2;
    box-shadow: 0 2px 12px rgba(16, 56, 120, 0.25);
}

.solution-carousel-arrow:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(16, 56, 120, 0.35);
}

.solution-carousel-arrow:active {
    transform: scale(0.95);
}

.solution-carousel-arrow.disabled {
    opacity: 0.3;
    pointer-events: none;
    cursor: default;
}

/* Carousel Dots */
.solution-carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 2rem;
}

.solution-carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-medium);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    padding: 0;
}

.solution-carousel-dot.active {
    background: var(--primary-blue);
    width: 28px;
    border-radius: 5px;
}

/* ========== Advantages 核心优势 ========== */
/* Advantages */
.advantages {
    padding: 6rem 0;
    background: var(--bg-gray);
}

.adv-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.adv-item {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.adv-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--tech-cyan));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
}

.adv-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.adv-item:hover::before {
    transform: scaleX(1);
}

.adv-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 1rem;
    background: var(--gradient-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 16px rgba(34, 184, 201, 0.25);
}

.adv-icon svg * {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    transition: stroke-dashoffset 1.5s ease;
}

.adv-item.visible .adv-icon svg * {
    stroke-dashoffset: 0;
}

.adv-data {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin: 0.75rem 0 0.25rem;
    line-height: 1.2;
}

.adv-data span {
    display: inline-block;
    min-width: 1ch;
}

.adv-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.adv-item p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========== Products 产品中心 ========== */
/* Products */
.products {
    padding: 6rem 0;
    background: #fff;
}

.prod-scroll-outer {
    position: relative;
}

.prod-scroll-wrapper {
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 1rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--border-medium) transparent;
}

.prod-scroll-wrapper::-webkit-scrollbar {
    height: 6px;
}

.prod-scroll-wrapper::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 3px;
}

.prod-scroll-wrapper::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 3px;
}

.prod-scroll-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--tech-cyan);
}

/* 产品滚动指示器 */
.prod-scroll-indicator {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 80px;
    pointer-events: none;
    display: flex;
    align-items: center;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    z-index: 5;
}

.prod-scroll-indicator.hidden {
    opacity: 0;
    visibility: hidden;
}

.prod-scroll-indicator-right {
    right: 0;
    justify-content: flex-end;
    background: linear-gradient(to right, transparent 0%, rgba(255, 255, 255, 0.85) 60%, #fff 100%);
}

.prod-scroll-indicator-left {
    left: 0;
    justify-content: flex-start;
    background: linear-gradient(to left, transparent 0%, rgba(255, 255, 255, 0.85) 60%, #fff 100%);
}

.prod-scroll-indicator-inner {
    width: 36px;
    height: 36px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 12px rgba(16, 56, 120, 0.25);
    pointer-events: auto;
    cursor: pointer;
    transition: transform 0.25s, box-shadow 0.25s;
    flex-shrink: 0;
}

.prod-scroll-indicator-inner:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(16, 56, 120, 0.35);
}

.prod-scroll-indicator-inner:active {
    transform: scale(0.95);
}

.prod-scroll-indicator-right .prod-scroll-indicator-inner {
    margin-right: 8px;
}

.prod-scroll-indicator-left .prod-scroll-indicator-inner {
    margin-left: 8px;
}

.prod-scroll-indicator-inner svg {
    width: 18px;
    height: 18px;
    color: #fff;
    animation: prod-indicator-bounce 1.6s ease-in-out infinite;
}

.prod-scroll-indicator-left .prod-scroll-indicator-inner svg {
    animation-name: prod-indicator-bounce-left;
}

@keyframes prod-indicator-bounce {

    0%,
    100% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(4px);
    }
}

@keyframes prod-indicator-bounce-left {

    0%,
    100% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(-4px);
    }
}

.prod-grid {
    display: grid;
    grid-auto-flow: column;
    grid-template-rows: 1fr 1fr;
    grid-auto-columns: 330px;
    gap: 1.5rem;
    width: max-content;
    min-width: 100%;
}

.prod-card {
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s;
    display: flex;
    flex-direction: column;
}

.prod-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.prod-img {
    height: 180px;
    position: relative;
    flex-shrink: 0;
}

.prod-img .img-placeholder {
    width: 100%;
    height: 100%;
    border: none;
    border-bottom: 1px solid var(--border-light);
}

.prod-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.3rem 0.8rem;
    background: var(--gradient-blue);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    z-index: 2;
}

.prod-info {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.prod-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.prod-info p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 0.75rem;
    flex: 1;
}

.prod-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
}

.prod-spec {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    background: var(--primary-blue-light);
    color: var(--primary-blue);
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: 6px;
    white-space: nowrap;
}

.prod-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--tech-cyan);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: gap 0.3s;
}

.prod-link:hover {
    gap: 0.75rem;
}

/* ========== Cases 成功案例 / 合作伙伴 ========== */
/* Cases */
.cases {
    padding: 6rem 0;
    background: var(--bg-gray);
}

.logo-wall-wrapper {
    overflow: hidden;
    margin-bottom: 3rem;
    mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
}

.logo-track {
    display: flex;
    width: max-content;
    animation: scroll-logos 25s linear infinite;
    contain: layout paint;
}

.logo-track:hover {
    animation-play-state: paused;
}

.logo-group {
    display: flex;
    gap: 1.5rem;
    padding-right: 1.5rem;
    flex-shrink: 0;
}

.logo-item {
    width: 180px;
    aspect-ratio: 3/2;
    background: var(--card-white);
    border: 2px solid var(--border-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-medium);
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.3s;
    filter: grayscale(100%);
    opacity: 0.7;
    flex-shrink: 0;
}

.logo-item:hover {
    filter: grayscale(0%);
    opacity: 1;
    border-color: var(--tech-cyan);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.logo-item.image-item {
    width: auto;
    height: 280px;
    aspect-ratio: 3/4;
    padding: 0;
    filter: none;
    opacity: 1;
    background: #fff;
    cursor: pointer;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-item.image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 6px;
    display: block;
}

.logo-item.image-item.landscape {
    aspect-ratio: auto;
    width: auto;
}

.logo-item.image-item.landscape img {
    height: 80%;
    width: auto;
    object-fit: contain;
}

.logo-item.image-item:hover {
    filter: none;
    opacity: 1;
    transform: translateY(-3px);
}

@keyframes scroll-logos {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.case-card {
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
}

.case-card:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
    transform: translateY(-4px);
}

.case-img {
    height: 200px;
}

.case-img .img-placeholder {
    width: 100%;
    height: 100%;
    border: none;
    border-bottom: 1px solid var(--border-light);
}

.case-info {
    padding: 1.5rem;
}

.case-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--tech-cyan-light);
    color: var(--tech-cyan);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}

.case-info h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.case-info p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========== Contact 联系我们 ========== */
/* Contact */
.contact {
    padding: 6rem 0;
    background: var(--gradient-hero);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, rgba(34, 184, 201, 0.06) 0%, transparent 50%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 640px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.contact-info h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1rem;
}

.contact-info>p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item .icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tech-cyan);
    font-size: 1.25rem;
}

.contact-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.25rem;
}

.contact-item span {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ---- 深色背景上的区域标题覆盖（白色文字 + 青色装饰线） ---- */
/* Section headers on dark backgrounds */
.business .section-header h2,
.advantages .section-header h2,
.cases .section-header h2,
.news .section-header h2 {
    color: #ffffff;
}

.business .section-header p,
.advantages .section-header p,
.cases .section-header p,
.news .section-header p {
    color: rgba(255, 255, 255, 0.75);
}

/* ========== Footer 页脚 ========== */
/* Footer */
footer {
    background: var(--primary-blue);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 1rem;
    display: inline-block;
}

.footer-brand .logo span {
    color: var(--tech-cyan);
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    opacity: 0.8;
    max-width: 300px;
}

.footer-col h4 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: var(--tech-cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ========== Video Carousel 视频轮播 ========== */
/* Video Carousel */
.video-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.video-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.video-slide {
    width: 100%;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
}

.video-card {
    border-radius: 16px;
    overflow: hidden;
    background: #1a1a1a;
    cursor: pointer;
    position: relative;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    flex-shrink: 0;
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.video-card.landscape {
    height: 480px;
    width: calc(480px * 16 / 9);
}

.video-card.portrait {
    width: 300px;
    height: 600px;
}

.video-card.portrait-53 {
    height: 480px;
    width: calc(480px * 5 / 3);
}

.video-card .video-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.video-card .video-placeholder {
    width: 100%;
    height: 100%;
    position: relative;
}

.video-card .video-cover {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    z-index: 1;
}

.video-card .play-btn,
.video-card .video-placeholder span {
    position: relative;
    z-index: 2;
}

.video-card video {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

.video-card.portrait video {
    object-fit: cover;
}

/* ---- 轮播箭头 ---- */
/* Carousel Arrows */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border-light);
    color: var(--primary-blue);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    z-index: 10;
    box-shadow: var(--shadow-md);
    padding-bottom: 2px;
}

.carousel-arrow:hover {
    background: #fff;
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-lg);
}

.carousel-arrow.prev {
    left: 8px;
}

.carousel-arrow.next {
    right: 8px;
}

.carousel-arrow:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: translateY(-50%) scale(1);
}

/* ---- 轮播圆点指示器 ---- */
/* Carousel Dots */
.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2rem;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-medium);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    padding: 0;
}

.carousel-dot.active {
    background: var(--tech-cyan);
    transform: scale(1.3);
}

.carousel-dot:hover {
    background: var(--primary-blue);
}

/* ========== Video Modal 视频弹窗 ========== */
/* Video Modal */
.video-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.video-modal.active {
    display: flex;
}

.video-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    backdrop-filter: blur(10px);
}

.video-modal-content {
    position: relative;
    z-index: 2;
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
}

.video-modal-content video {
    max-width: 90vw;
    max-height: 90vh;
    width: auto;
    height: auto;
    display: block;
}

.video-modal-close {
    position: absolute;
    top: -52px;
    right: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    padding-bottom: 4px;
}

.video-modal-close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: rotate(90deg);
}

/* ========== Image Modal 图片灯箱 ========== */
/* Image Modal */
.image-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-modal.active {
    display: flex;
    opacity: 1;
}

.image-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.image-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.image-modal-content img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

.image-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 1.5rem;
    line-height: 36px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.image-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

/* ========== Company History Timeline 发展历程时间线 ========== */
.company-history {
    margin-top: 4rem;
    padding-top: 2rem;
    position: relative;
}

.timeline {
    position: relative;
    padding: 2rem 0;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--tech-cyan), var(--primary-blue));
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2.5rem;
    position: relative;
    width: 100%;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item .tl-year {
    width: 150px;
    text-align: right;
    padding-right: 2rem;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--tech-cyan);
    flex-shrink: 0;
    line-height: 1.4;
}

.timeline-item .tl-dot {
    position: absolute;
    left: 50%;
    top: 0.4rem;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--tech-cyan);
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px var(--tech-cyan), var(--shadow-sm);
    transform: translateX(-50%);
    z-index: 2;
    transition: all 0.4s;
}

.timeline-item.visible .tl-dot {
    background: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--primary-blue), 0 0 20px rgba(16, 56, 120, 0.25);
}

.timeline-item .tl-content {
    width: calc(50% - 80px);
    margin-left: auto;
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    transition: all 0.4s;
    position: relative;
}

.timeline-item .tl-content::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0.7rem;
    width: 12px;
    height: 12px;
    background: var(--card-white);
    border-left: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    transform: rotate(45deg);
}

.timeline-item:nth-child(odd) .tl-content {
    margin-left: 0;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 2rem;
}

.timeline-item:nth-child(odd) .tl-year {
    margin-left: auto;
    text-align: left;
    padding-right: 0;
    padding-left: 2rem;
    order: 2;
}

.timeline-item:nth-child(odd) .tl-content {
    order: 1;
}

.timeline-item:nth-child(odd) .tl-content::before {
    left: auto;
    right: -6px;
    border-left: none;
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.timeline-item .tl-content:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.timeline-item .tl-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.35rem;
}

.timeline-item .tl-content p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.timeline-item.fade-up {
    opacity: 0;
    transform: translateY(20px);
}

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

/* ========== Policy Benefits 政策红利 ========== */
.policy {
    padding: 6rem 0;
    background: var(--bg-gray);
}

.policy-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.policy-stat {
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.4s;
}

.policy-stat:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.policy-stat .stat-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    background: var(--gradient-cyan);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    box-shadow: 0 4px 16px rgba(34, 184, 201, 0.25);
}

.policy-stat h3 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 0.25rem;
}

.policy-stat p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.5;
}

.policy-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.policy-card {
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 1.75rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s;
}

.policy-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--tech-cyan));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
}

.policy-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.policy-card .policy-year {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--tech-cyan);
    margin-bottom: 0.5rem;
}

.policy-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.policy-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.policy-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.policy-highlight {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-medium);
    border-radius: 12px;
    transition: all 0.3s;
}

.policy-highlight:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.policy-highlight .hl-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.policy-highlight h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.35rem;
}

.policy-highlight p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
    margin: 0;
}

/* ========== Government Report 政府工作报告 ========== */
.gov-report {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1.5rem;
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    margin-bottom: 3rem;
    align-items: center;
    transition: all 0.4s;
}

.gov-report:hover {
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.gov-report-img {
    width: 100%;
    max-width: 240px;
    margin: 0 auto;
    aspect-ratio: 3/4;
    border-radius: 12px;
    overflow: hidden;
    background: var(--img-placeholder);
}

.gov-report-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gov-report-body {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.gov-report-label {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background: var(--gradient-blue);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    width: fit-content;
}

.gov-report-body h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1.4;
}

.gov-report-quote {
    padding: 0.85rem 1.25rem;
    background: var(--primary-blue-light);
    border-left: 4px solid var(--tech-cyan);
    border-radius: 0 8px 8px 0;
    margin: 0.25rem 0;
}

.gov-report-quote p {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-blue);
    line-height: 1.7;
    margin: 0;
}

.gov-report-quote .quote-source {
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 400;
    margin-top: 0.5rem;
}

.gov-report-desc {
    font-size: 0.85rem;
    color: var(--text-medium);
    line-height: 1.7;
}

.gov-report-desc strong {
    color: var(--primary-blue);
}

.gov-report-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 0.25rem;
    color: var(--tech-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    width: fit-content;
}

.gov-report-link:hover {
    color: var(--primary-blue);
    gap: 0.5rem;
}

/* ========== Technology & Services ========== */
.tech-service {
    padding: 6rem 0;
    background: #fff;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.tech-card {
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--tech-cyan));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
}

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

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

.tech-card .tech-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: var(--primary-blue-light);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    font-size: 1.5rem;
    transition: all 0.3s;
}

.tech-card:hover .tech-icon {
    background: var(--gradient-blue);
    color: #fff;
    box-shadow: 0 4px 16px rgba(16, 56, 120, 0.25);
}

.tech-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.tech-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
    margin: 0;
}

/* Service Process Flow */
.service-process {
    margin-bottom: 3rem;
}

.service-process h3 {
    text-align: center;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 2rem;
}

.process-flow {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    flex-wrap: nowrap;
}

.process-step {
    flex: 1;
    text-align: center;
    position: relative;
    padding: 1.5rem 1rem;
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    transition: all 0.3s;
    max-width: 200px;
}

.process-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--tech-cyan);
}

.process-step .step-num {
    width: 36px;
    height: 36px;
    margin: 0 auto 0.75rem;
    background: var(--gradient-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.9rem;
    font-weight: 700;
}

.process-step h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.25rem;
}

.process-step p {
    font-size: 0.8rem;
    color: var(--text-light);
    margin: 0;
}

.process-arrow {
    flex-shrink: 0;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tech-cyan);
    font-size: 1.5rem;
    font-weight: 300;
}

/* Service Support Cards */
.service-support {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.4s;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card .svc-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    background: var(--tech-cyan-light);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tech-cyan);
    font-size: 1.5rem;
}

.service-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
    margin: 0;
}

/* Drone Training Feature Block */
.drone-training {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f4fd 100%);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 3rem;
    align-items: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s;
}

.drone-training::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--tech-cyan));
}

.drone-training:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: transparent;
}

.drone-training-img {
    height: 240px;
    border-radius: 12px;
    overflow: hidden;
    background: var(--img-placeholder);
    border: 1px solid var(--border-light);
}

.drone-training-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.drone-training-info h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.drone-training-info h3::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 24px;
    background: var(--tech-cyan);
    border-radius: 2px;
}

.drone-training-info>p {
    font-size: 0.95rem;
    color: var(--text-medium);
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.drone-training-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.drone-training-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--text-dark);
    font-weight: 500;
}

.drone-training-feature .dt-check {
    width: 22px;
    height: 22px;
    min-width: 22px;
    background: var(--gradient-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.7rem;
}

.drone-training-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.drone-training-tag {
    padding: 0.35rem 0.9rem;
    background: var(--card-white);
    border: 1px solid var(--border-medium);
    color: var(--primary-blue);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
    transition: all 0.3s;
}

.drone-training-tag:hover {
    background: var(--primary-blue);
    color: #fff;
    border-color: var(--primary-blue);
}

.tech-cta {
    text-align: center;
    margin-top: 3rem;
}

/* ========== News Media ========== */
.news {
    padding: 6rem 0;
    background: var(--bg-gray);
}

.news-filter {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.news-filter-btn {
    padding: 0.5rem 1.25rem;
    background: transparent;
    border: 1.5px solid var(--border-medium);
    border-radius: 20px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.news-filter-btn:hover {
    border-color: var(--tech-cyan);
    color: var(--tech-cyan);
}

.news-filter-btn.active {
    background: var(--gradient-blue);
    border-color: transparent;
    color: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.news-card {
    background: var(--card-white);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.news-img .img-placeholder {
    width: 100%;
    height: 100%;
    border: none;
    border-bottom: 1px solid var(--border-light);
}

.news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ---- 新闻卡片多图网格 ---- */
.news-img-multiple {
    display: grid;
    gap: 2px;
    background: var(--border-light);
}

.news-img-multiple.grid-2x2 {
    grid-template-columns: repeat(2, 1fr);
    height: auto;
}

.news-img-multiple.grid-multi {
    grid-template-columns: repeat(2, 1fr);
    height: auto;
}

.news-img-multiple.grid-multi img {
    height: 85px;
}

.news-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.3rem 0.8rem;
    background: var(--gradient-blue);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    z-index: 2;
}

.news-date {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 0, 0, 0.55);
    color: #fff;
    font-size: 0.75rem;
    border-radius: 4px;
    z-index: 2;
}

.news-info {
    padding: 1.5rem;
}

.news-info h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.news-info p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--tech-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: gap 0.3s;
}

.news-link:hover {
    gap: 0.75rem;
}

/* ---- 新闻子模块（发展历程 / 政策红利 / 公司新闻 / 行业动态 等分类内容区） ---- */
/* News Sub Sections */
.news-sub-section {
    margin-bottom: 3.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-light);
}

.news-sub-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.news-sub-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.4rem;
    text-align: center;
}

.news-sub-desc {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.95rem;
    text-align: center;
    margin-bottom: 2rem;
}

.news .policy-stats {
    margin-bottom: 2.5rem;
}

.news .policy-timeline {
    margin-bottom: 2.5rem;
}

.news .policy-highlight {
    background: rgba(255, 255, 255, 0.08);
}

/* ========== Hero Carousel 头部轮播图 ========== */
.hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 20px;
    overflow: hidden;
}

.hero-carousel-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.hero-carousel-slide {
    flex: 0 0 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(90deg, #e8eaed 25%, #f4f5f6 50%, #e8eaed 75%);
    background-size: 200% 100%;
    animation: carousel-shimmer 1.8s infinite ease-in-out;
}

.hero-carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    opacity: 0;
    transition: opacity 0.35s ease;
    position: relative;
    z-index: 1;
}

.hero-carousel-slide.loaded {
    background: transparent;
    animation: none;
}

.hero-carousel-slide.loaded img {
    opacity: 1;
}

@keyframes carousel-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.hero-carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.85);
    border: none;
    color: var(--primary-blue);
    font-size: 1.8rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    opacity: 0;
    padding-bottom: 3px;
}

.hero-carousel:hover .hero-carousel-arrow {
    opacity: 1;
}

.hero-carousel-arrow:hover {
    background: #ffffff;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.hero-carousel-prev {
    left: 12px;
}

.hero-carousel-next {
    right: 12px;
}

.hero-carousel-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 5;
}

.hero-carousel-dots .hero-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
}

.hero-carousel-dots .hero-dot.active {
    background: #ffffff;
    width: 24px;
    border-radius: 4px;
}

.hero-carousel-dots .hero-dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

/* ============================================================
   响应式设计
   断点策略：1024px(平板横) → 768px(平板竖) → 480px(手机)
   移动端优先调整：网格列数 → 字号 → 间距 → 导航折叠
   ============================================================ */
/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-badges {
        justify-content: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        height: 360px;
        order: -1;
    }

    .hero-carousel-arrow {
        width: 34px;
        height: 34px;
        font-size: 1.4rem;
        opacity: 0.7;
    }

    .hero-carousel-prev {
        left: 8px;
    }

    .hero-carousel-next {
        right: 8px;
    }

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

    .about-visual {
        height: 300px;
    }

    .video-slide {
        gap: 1rem;
    }

    .video-card.landscape {
        height: 400px;
        width: calc(400px * 16 / 9);
    }

    .video-card.portrait {
        width: 250px;
        height: 500px;
    }

    .video-card.portrait-53 {
        height: 400px;
        width: calc(400px * 5 / 3);
    }

    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }

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

    .solution-carousel-arrow {
        width: 32px;
        height: 32px;
    }

    .solution-card-img {
        flex: 0 0 200px;
    }

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

    .prod-grid {
        grid-auto-columns: 300px;
        gap: 1.25rem;
    }

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

    .logo-item {
        width: 160px;
    }

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

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

    .logo-item.image-item {
        height: 220px;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        flex-direction: column;
        padding-left: 60px;
    }

    .timeline-item .tl-year {
        width: auto;
        text-align: left;
        padding-right: 0;
        font-size: 1.2rem;
        margin-bottom: 0.5rem;
    }

    .timeline-item .tl-dot {
        left: 30px;
        top: 0.6rem;
    }

    .timeline-item .tl-content {
        width: 100%;
        margin-left: 0;
        padding-left: 1.25rem;
    }

    .timeline-item:nth-child(odd) .tl-content {
        margin-left: 0;
        margin-right: 0;
        padding-left: 1.25rem;
        padding-right: 1.25rem;
        order: 1;
    }

    .timeline-item:nth-child(odd) .tl-year {
        margin-left: 0;
        text-align: left;
        padding-left: 0;
        order: 0;
    }

    .timeline-item:nth-child(odd) .tl-content::before,
    .timeline-item .tl-content::before {
        left: -6px;
        right: auto;
        border-left: 1px solid var(--border-light);
        border-right: none;
        border-bottom: 1px solid var(--border-light);
    }

    /* 服务流程改为纵向/换行 */
    .process-flow {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .process-step {
        flex: 0 0 calc(33.33% - 1rem);
        max-width: none;
        min-width: 100px;
    }

    .process-arrow {
        width: 24px;
        font-size: 1.2rem;
    }

    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .drone-training {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }

    .drone-training-img {
        height: 180px;
    }

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

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

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

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

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

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

@media (max-width: 768px) {
    html {
        min-width: 0;
    }

    body {
        min-width: 0;
        width: 100%;
        max-width: 100%;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    /* 页头缩进 */
    .section-header h2 {
        font-size: 1.5rem;
    }

    .section-header p {
        font-size: 0.9rem;
    }

    .section-header {
        margin-bottom: 2rem;
    }

    /* 所有 section 内边距缩小 */
    section {
        padding: 3rem 0 !important;
    }

    .hero {
        min-height: auto;
        padding-top: 90px;
        padding-bottom: 3rem;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
        padding: 2rem 0 1rem;
    }

    .hero-text h1 {
        font-size: 1.6rem;
        line-height: 1.35;
    }

    .hero-sub {
        font-size: 0.9rem;
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-badges {
        justify-content: center;
        gap: 0.5rem;
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 0.3rem 0.75rem;
    }

    .hero-buttons {
        justify-content: center;
        gap: 0.75rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.85rem;
    }

    .hero-visual {
        height: 240px;
        order: -1;
    }

    .hero-carousel-arrow {
        width: 28px;
        height: 28px;
        font-size: 1.1rem;
        opacity: 0.5;
    }

    .hero-carousel-dots {
        bottom: 8px;
        gap: 5px;
    }

    .hero-carousel-dots .hero-dot {
        width: 6px;
        height: 6px;
    }

    .hero-carousel-dots .hero-dot.active {
        width: 16px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-visual {
        height: 240px;
    }

    .about-text p {
        font-size: 0.9rem;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }

    .about-stat {
        padding: 0.75rem 0.5rem;
    }

    .about-stat h4 {
        font-size: 1.2rem;
    }

    .about-stat span {
        font-size: 0.7rem;
    }

    .biz-grid {
        display: flex;
        overflow-x: auto;
        gap: 1rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        scroll-snap-type: x mandatory;
        padding-bottom: 0.5rem;
    }

    .biz-grid::-webkit-scrollbar {
        display: none;
    }

    .biz-card {
        flex: 0 0 64vw;
        scroll-snap-align: start;
    }

    .biz-img {
        height: 200px;
    }

    .biz-info h3 {
        font-size: 1rem;
    }

    .biz-info p {
        font-size: 0.85rem;
    }

    .solution-card {
        flex-direction: column;
        min-height: auto;
    }

    .solution-card.reverse {
        flex-direction: column;
    }

    .solution-card-img {
        flex: 0 0 160px;
    }

    .solution-card-body {
        padding: 1rem;
    }

    .solution-card-body h3 {
        font-size: 1rem;
    }

    .solution-card-body p {
        font-size: 0.82rem;
    }

    .solution-tag {
        font-size: 0.7rem;
        padding: 0.2rem 0.5rem;
    }

    .solution-carousel-arrow {
        width: 28px;
        height: 28px;
    }

    .adv-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .adv-item {
        padding: 1.25rem 1rem;
    }

    .adv-item p {
        display: none;
    }

    .adv-data {
        font-size: 1.4rem;
    }

    .tech-grid {
        display: flex;
        overflow-x: auto;
        gap: 0.6rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 0.5rem;
    }

    .tech-grid::-webkit-scrollbar {
        display: none;
    }

    .tech-card {
        flex: 0 0 115px;
        padding: 0.9rem 0.5rem;
    }

    .tech-card .tech-icon {
        width: 44px;
        height: 44px;
        margin: 0 auto 0.5rem;
        border-radius: 12px;
    }

    .tech-card .tech-icon svg {
        width: 22px;
        height: 22px;
    }

    .tech-card h4 {
        font-size: 0.75rem;
        margin-bottom: 0;
    }

    .tech-card p {
        display: none;
    }

    .drone-training {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1.25rem;
    }

    .drone-training-img {
        height: 160px;
    }

    .drone-training-features {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .drone-training-info h3 {
        font-size: 1.15rem;
    }

    .drone-training-info>p {
        font-size: 0.85rem;
    }

    .drone-training-tag {
        font-size: 0.72rem;
        padding: 0.25rem 0.65rem;
    }

    .process-flow {
        overflow-x: auto;
        flex-wrap: nowrap;
        gap: 0;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 0.5rem;
    }

    .process-flow::-webkit-scrollbar {
        display: none;
    }

    .process-step {
        flex: 0 0 90px;
        max-width: none;
        min-width: 0;
        padding: 0.6rem 0.35rem;
    }

    .process-step .step-num {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
        margin: 0 auto 0.35rem;
    }

    .process-step h4 {
        font-size: 0.7rem;
        margin-bottom: 0;
    }

    .process-step p {
        display: none;
    }

    .process-arrow {
        width: 16px;
        font-size: 0.8rem;
        display: flex;
        flex-shrink: 0;
    }

    .service-support {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .service-card {
        padding: 1.25rem 0.75rem;
    }

    .service-card p {
        display: none;
    }

    .prod-grid {
        grid-auto-columns: 240px;
        gap: 1rem;
    }

    .prod-img {
        height: 150px;
    }

    .prod-info h3 {
        font-size: 1rem;
    }

    .prod-info p {
        font-size: 0.8rem;
    }

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

    .cert-card {
        padding: 1rem;
    }

    .logo-item {
        width: 130px;
        font-size: 0.75rem;
    }

    .logo-item.image-item {
        height: 200px;
    }

    .case-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .case-img {
        height: 180px;
    }

    .news-grid {
        display: flex;
        overflow-x: auto;
        gap: 1rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        scroll-snap-type: x mandatory;
        padding-bottom: 0.5rem;
    }

    .news-grid::-webkit-scrollbar {
        display: none;
    }

    .news-card {
        flex: 0 0 64vw;
        scroll-snap-align: start;
    }

    .news-img {
        height: 200px;
    }

    .news-filter {
        gap: 0.4rem;
    }

    .news-filter-btn {
        padding: 0.4rem 0.9rem;
        font-size: 0.78rem;
    }

    .policy-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .policy-stat {
        padding: 1.25rem 1rem;
    }

    .policy-stat h3 {
        font-size: 1.4rem;
    }

    .policy-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .policy-highlights {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    /* 时间线 */
    .timeline::before {
        left: 24px;
    }

    .timeline-item {
        padding-left: 50px;
        margin-bottom: 1.5rem;
    }

    .timeline-item .tl-year {
        font-size: 1.1rem;
    }

    .timeline-item .tl-dot {
        left: 24px;
        width: 12px;
        height: 12px;
    }

    .timeline-item .tl-content {
        padding: 1rem;
    }

    .timeline-item .tl-content h4 {
        font-size: 0.9rem;
    }

    .timeline-item .tl-content p {
        font-size: 0.8rem;
    }

    .video-card.landscape {
        height: 220px;
        width: calc(220px * 16 / 9);
    }

    .video-card.portrait {
        width: 150px;
        height: 300px;
    }

    .video-card.portrait-53 {
        height: 220px;
        width: calc(220px * 5 / 3);
    }

    .carousel-arrow {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }

    .carousel-dots {
        margin-top: 1rem;
        gap: 0.5rem;
    }

    .carousel-dot {
        width: 8px;
        height: 8px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-brand p {
        max-width: 100%;
    }

    footer {
        padding: 2.5rem 0 1.5rem;
    }

    .footer-col h4 {
        margin-bottom: 0.75rem;
    }

    /* 手机端只显示快捷入口 */
    .footer-col:not(:last-child) {
        display: none;
    }

    /* 快捷入口 — 移动端横向快速跳转按钮 */
    .footer-col:last-child ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.6rem;
    }

    .footer-col:last-child ul li {
        margin-bottom: 0;
    }

    .footer-col:last-child ul li a {
        display: inline-block;
        padding: 0.5rem 1.2rem;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 20px;
        color: #fff;
        font-size: 0.85rem;
        transition: all 0.3s;
    }

    .footer-col:last-child ul li a:hover {
        background: var(--tech-cyan);
        border-color: var(--tech-cyan);
        color: #fff;
    }

    .contact-grid {
        max-width: 100%;
        padding: 0 1rem;
    }

    .contact-info h2 {
        font-size: 1.5rem;
    }

    .company-history {
        margin-top: 2rem;
    }

    .cert-header h3 {
        font-size: 1.1rem;
    }

    .cert-header p {
        font-size: 0.85rem;
    }

    .news-sub-title {
        font-size: 1.2rem;
    }

    .news-sub-desc {
        font-size: 0.85rem;
    }

    .prod-scroll-indicator {
        width: 40px;
    }

    .solution-carousel-dots {
        margin-top: 1.25rem;
        gap: 8px;
    }

    .solution-carousel-dot {
        width: 8px;
        height: 8px;
    }

    .solution-carousel-dot.active {
        width: 22px;
    }

    /* 滚动产品指示器缩小 */
    .prod-scroll-indicator-inner {
        width: 28px;
        height: 28px;
    }

    .prod-scroll-indicator-inner svg {
        width: 14px;
        height: 14px;
    }
}

/* ========== 小屏手机 (<480px)：进一步缩小间距与字号 ========== */
@media (max-width: 480px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 4%;
    }

    .navbar {
        padding: 0 4%;
        height: 60px;
    }

    .logo {
        font-size: 1.2rem;
    }

    .logo img {
        height: 28px;
    }

    .hero {
        padding-top: 70px;
    }

    .hero-visual {
        height: 200px;
    }

    .hero-text h1 {
        font-size: 1.35rem;
    }

    .hero-text h1 br {
        display: none;
    }

    .hero-sub {
        font-size: 0.82rem;
    }

    .hero-badges {
        gap: 0.35rem;
    }

    .hero-badge {
        font-size: 0.7rem;
        padding: 0.25rem 0.6rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.6rem;
    }

    .btn {
        width: 100%;
        max-width: 260px;
        text-align: center;
        padding: 0.7rem 1.25rem;
        font-size: 0.82rem;
    }

    .section-header h2 {
        font-size: 1.3rem;
    }

    .section-header h2::before {
        height: 22px;
        width: 3px;
    }

    .about-visual {
        height: 200px;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
    }

    .about-stat {
        padding: 0.6rem 0.3rem;
    }

    .about-stat h4 {
        font-size: 1.1rem;
    }

    .about-stat span {
        font-size: 0.65rem;
    }

    .biz-card {
        flex: 0 0 64vw;
        scroll-snap-align: start;
    }

    .biz-img {
        height: 180px;
    }

    .solution-card-img {
        flex: 0 0 140px;
    }

    .solution-card-body h3 {
        font-size: 0.9rem;
    }

    .solution-card-body p {
        font-size: 0.78rem;
    }

    .solution-tags {
        gap: 0.3rem;
    }

    .solution-tag {
        font-size: 0.65rem;
        padding: 0.18rem 0.45rem;
    }

    .tech-grid {
        display: flex;
        overflow-x: auto;
        gap: 0.5rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 0.4rem;
    }

    .tech-grid::-webkit-scrollbar {
        display: none;
    }

    .tech-card {
        flex: 0 0 100px;
        padding: 0.7rem 0.4rem;
    }

    .tech-card .tech-icon {
        width: 38px;
        height: 38px;
        margin: 0 auto 0.4rem;
        border-radius: 10px;
    }

    .tech-card .tech-icon svg {
        width: 18px;
        height: 18px;
    }

    .tech-card h4 {
        font-size: 0.7rem;
    }

    .tech-card p {
        display: none;
    }

    .process-flow {
        overflow-x: auto;
        flex-wrap: nowrap;
        gap: 0;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 0.4rem;
    }

    .process-flow::-webkit-scrollbar {
        display: none;
    }

    .process-step {
        flex: 0 0 78px;
        min-width: 0;
        padding: 0.5rem 0.25rem;
    }

    .process-step .step-num {
        width: 28px;
        height: 28px;
        font-size: 0.85rem;
        margin: 0 auto 0.3rem;
    }

    .process-step h4 {
        font-size: 0.65rem;
    }

    .process-step p {
        display: none;
    }

    .process-arrow {
        width: 14px;
        font-size: 0.7rem;
        flex-shrink: 0;
    }

    .prod-grid {
        grid-auto-columns: 200px;
        gap: 0.75rem;
    }

    .prod-img {
        height: 130px;
    }

    .prod-info {
        padding: 1rem;
    }

    .prod-info h3 {
        font-size: 0.9rem;
    }

    .prod-info p {
        font-size: 0.75rem;
    }

    .prod-spec {
        font-size: 0.65rem;
        padding: 0.2rem 0.45rem;
    }

    .cert-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .logo-item {
        width: 110px;
        font-size: 0.7rem;
    }

    .logo-item.image-item {
        height: 180px;
    }

    .logo-wall-wrapper {
        mask-image: linear-gradient(to right, transparent, black 2%, black 98%, transparent);
        -webkit-mask-image: linear-gradient(to right, transparent, black 2%, black 98%, transparent);
    }

    .case-img {
        height: 160px;
    }

    .news-card {
        flex: 0 0 64vw;
        scroll-snap-align: start;
    }

    .news-img {
        height: 180px;
    }

    .news-filter-btn {
        padding: 0.35rem 0.7rem;
        font-size: 0.72rem;
    }

    .policy-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .policy-stat {
        padding: 1rem 0.75rem;
    }

    .policy-stat h3 {
        font-size: 1.25rem;
    }

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

    .timeline-item {
        padding-left: 42px;
    }

    .timeline::before {
        left: 18px;
    }

    .timeline-item .tl-dot {
        left: 18px;
        width: 10px;
        height: 10px;
    }

    .timeline-item .tl-year {
        font-size: 1rem;
    }

    .video-card.landscape {
        height: 180px;
        width: calc(180px * 16 / 9);
    }

    .video-card.portrait {
        width: 130px;
        height: 260px;
    }

    .video-card.portrait-53 {
        height: 180px;
        width: calc(180px * 5 / 3);
    }

    .carousel-arrow {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }

    .carousel-arrow.prev {
        left: 2px;
    }

    .carousel-arrow.next {
        right: 2px;
    }

    .contact-info h2 {
        font-size: 1.3rem;
    }

    .contact-item {
        gap: 0.75rem;
    }

    .contact-item .icon {
        width: 40px;
        height: 40px;
        min-width: 40px;
        font-size: 1rem;
    }

    .contact-item h4 {
        font-size: 0.9rem;
    }

    .contact-item span {
        font-size: 0.8rem;
    }

    .footer-grid {
        gap: 1.5rem;
    }

    .footer-brand p {
        font-size: 0.8rem;
    }

    .footer-col h4 {
        font-size: 0.9rem;
    }

    /* 手机端只显示快捷入口 */
    .footer-col:not(:last-child) {
        display: none;
    }

    .footer-col ul li a {
        font-size: 0.8rem;
    }

    /* 快捷入口 — 移动端横向快速跳转按钮 */
    .footer-col:last-child ul li a {
        padding: 0.4rem 1rem;
        font-size: 0.78rem;
    }

    /* 图片弹窗 */
    .image-modal-content img {
        max-width: 95vw;
        max-height: 80vh;
    }

    /* 视频弹窗 */
    .video-modal-content video {
        max-width: 95vw;
        max-height: 70vh;
    }

    .prod-scroll-indicator {
        width: 32px;
    }

    .prod-scroll-indicator-inner {
        width: 26px;
        height: 26px;
    }

    .service-card {
        padding: 1rem 0.5rem;
    }

    .service-card h4 {
        font-size: 0.85rem;
    }

    .service-card .svc-icon {
        width: 44px;
        height: 44px;
        margin-bottom: 0.6rem;
    }

    .service-card .svc-icon svg {
        width: 22px;
        height: 22px;
    }

    .adv-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .adv-item {
        padding: 1rem 0.75rem;
    }

    .adv-item .adv-icon {
        width: 52px;
        height: 52px;
    }

    .adv-item .adv-icon svg {
        width: 24px;
        height: 24px;
    }

    .adv-item h4 {
        font-size: 0.85rem;
    }
}
/* ============================================================
   7. 侧边理念标语（Side Philosophy Slogan）
   固定在页面右侧，竖排中文 + 渐变装饰线，桌面端可见
   ============================================================ */
.side-philosophy {
    position: fixed;
    left: 1.4rem;
    top: 36%;
    transform: translateY(-50%);
    z-index: 500;
    display: flex;
    align-items: center;
    gap: 1rem;
    pointer-events: none;
    user-select: none;
}

.side-philosophy .philo-line {
    width: 1.5px;
    height: 320px;
    background: linear-gradient(to bottom,
            transparent 0%,
            var(--tech-cyan) 15%,
            var(--tech-cyan) 85%,
            transparent 100%);
    border-radius: 1px;
    opacity: 0.5;
    flex-shrink: 0;
    transition: opacity 0.6s;
}

.side-philosophy .philo-text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: 0.6em;
    color: #5b9eae;
    font-family: 'PingFang SC', 'Noto Serif SC', 'STSong', 'SimSun', 'Microsoft YaHei', serif;
    line-height: 2;
    text-shadow:
        0 0 10px rgba(98, 175, 195, 0.5),
        0 0 2px rgba(255, 255, 255, 0.4);
    transition: color 0.6s, text-shadow 0.6s;
}

.side-philosophy:hover .philo-text {
    color: #6dbcca;
    text-shadow:
        0 0 16px rgba(98, 175, 195, 0.7),
        0 0 4px rgba(255, 255, 255, 0.6);
}

.side-philosophy:hover .philo-line {
    opacity: 0.75;
}

/* 移动端隐藏 */
@media (max-width: 768px) {
    .side-philosophy {
        display: none;
    }
}