/* ===== 全局重置与基础设置 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1a1a2e;
    --primary-light: #2a2a4e;
    --accent: #e94560;
    --accent-hover: #ff6b81;
    --text: #ffffff;
    --text-secondary: #b0b0c0;
    --card-bg: rgba(255, 255, 255, 0.08);
    --card-border: rgba(255, 255, 255, 0.12);
    --glass-bg: rgba(26, 26, 46, 0.75);
    --glass-border: rgba(255, 255, 255, 0.18);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background: var(--primary);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== 暗色模式（默认即暗色，额外支持系统偏好） ===== */
@media (prefers-color-scheme: light) {
    :root {
        --primary: #0f0f23;
        --primary-light: #1e1e3a;
        --text: #f0f0f5;
        --text-secondary: #a0a0b8;
        --card-bg: rgba(255, 255, 255, 0.06);
        --card-border: rgba(255, 255, 255, 0.1);
        --glass-bg: rgba(15, 15, 35, 0.8);
        --glass-border: rgba(255, 255, 255, 0.15);
    }
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--primary);
}
::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

/* ===== 滚动动画基类 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 通用链接与按钮 ===== */
a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover, a:focus {
    color: var(--accent-hover);
    outline: none;
}

button, [role="button"], a[role="button"] {
    display: inline-block;
    padding: 12px 28px;
    background: var(--accent);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    text-align: center;
    letter-spacing: 0.5px;
}
button:hover, [role="button"]:hover, a[role="button"]:hover {
    background: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(233, 69, 96, 0.35);
}
button:active, [role="button"]:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

/* ===== Header / 导航 ===== */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    transition: background var(--transition);
}

header nav[aria-label="主导航"] ul {
    list-style: none;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

header nav[aria-label="主导航"] a {
    padding: 8px 16px;
    border-radius: 30px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: background var(--transition), color var(--transition);
    white-space: nowrap;
}
header nav[aria-label="主导航"] a:hover,
header nav[aria-label="主导航"] a[aria-current="page"] {
    background: rgba(233, 69, 96, 0.15);
    color: var(--accent);
}
header nav[aria-label="主导航"] a[aria-current="page"] {
    font-weight: 600;
}

header > div a {
    display: flex;
    align-items: center;
}

/* ===== Hero区域（渐变Banner） ===== */
section[aria-labelledby="hero-title"] {
    position: relative;
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 60px 24px;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a3e 30%, #2a1a3a 60%, #1a1a2e 100%);
    overflow: hidden;
}

section[aria-labelledby="hero-title"]::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(233, 69, 96, 0.12) 0%, transparent 60%),
                radial-gradient(circle at 70% 80%, rgba(100, 150, 255, 0.08) 0%, transparent 50%);
    animation: heroGlow 12s ease-in-out infinite alternate;
    z-index: 0;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 5%) scale(1.1); }
}

section[aria-labelledby="hero-title"] > * {
    position: relative;
    z-index: 1;
}

section[aria-labelledby="hero-title"] h1 {
    font-size: clamp(2.2rem, 6vw, 4rem);
    font-weight: 800;
    background: linear-gradient(to right, #ffffff, #e94560, #ffb3c1);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 40px rgba(233, 69, 96, 0.2);
}

section[aria-labelledby="hero-title"] p {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 600px;
}

section[aria-labelledby="hero-title"] div {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

/* ===== 通用section卡片样式（圆角卡片 + 毛玻璃效果） ===== */
section {
    padding: 60px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

section[aria-labelledby]:not([aria-labelledby="hero-title"]) {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    margin-top: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

section[aria-labelledby]:not([aria-labelledby="hero-title"]):hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
    display: inline-block;
    color: var(--text);
}

h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent);
    border-radius: 2px;
    margin-top: 8px;
    transition: width var(--transition);
}

section:hover h2::after {
    width: 100px;
}

h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent);
}

p {
    margin-bottom: 16px;
    color: var(--text-secondary);
    max-width: 800px;
}

ul, ol {
    padding-left: 24px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

li {
    margin-bottom: 8px;
}

/* ===== 文章卡片（产品、解决方案、洞察等） ===== */
article {
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: background var(--transition), transform var(--transition), border-color var(--transition);
}

article:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
    border-color: var(--accent);
}

article a {
    font-weight: 600;
    display: inline-block;
    margin-top: 8px;
}

/* ===== 引用块（用户评价） ===== */
blockquote {
    background: rgba(233, 69, 96, 0.06);
    border-left: 4px solid var(--accent);
    padding: 20px 24px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-bottom: 20px;
    font-style: italic;
    transition: background var(--transition);
}

blockquote:hover {
    background: rgba(233, 69, 96, 0.1);
}

blockquote p {
    margin-bottom: 8px;
    color: var(--text);
    font-size: 1.05rem;
}

blockquote cite {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== details / summary（FAQ） ===== */
details {
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: background var(--transition), border-color var(--transition);
    cursor: pointer;
}

details:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--accent);
}

details[open] {
    background: rgba(233, 69, 96, 0.06);
    border-color: var(--accent);
}

summary {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text);
    outline: none;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    font-size: 1.4rem;
    color: var(--accent);
    transition: transform var(--transition);
}

details[open] summary::after {
    content: '−';
    transform: rotate(180deg);
}

details p {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* ===== address（联系信息） ===== */
address {
    font-style: normal;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    padding: 24px;
    line-height: 2;
}

address p {
    margin-bottom: 4px;
}

/* ===== 面包屑导航 ===== */
nav[aria-label="面包屑导航"] {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
}

nav[aria-label="面包屑导航"] ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0;
    font-size: 0.9rem;
}

nav[aria-label="面包屑导航"] li::after {
    content: '/';
    margin-left: 8px;
    color: var(--text-secondary);
}

nav[aria-label="面包屑导航"] li:last-child::after {
    content: '';
}

nav[aria-label="面包屑导航"] a {
    color: var(--text-secondary);
}

nav[aria-label="面包屑导航"] a:hover {
    color: var(--accent);
}

nav[aria-label="面包屑导航"] [aria-current="page"] {
    color: var(--accent);
    font-weight: 600;
}

/* ===== Footer ===== */
footer {
    background: var(--glass-bg);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-top: 1px solid var(--glass-border);
    padding: 40px 24px 24px;
    text-align: center;
    margin-top: 40px;
}

footer nav[aria-label="底部导航"] ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
    padding: 0;
    margin-bottom: 24px;
}

footer nav[aria-label="底部导航"] a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

footer nav[aria-label="底部导航"] a:hover {
    color: var(--accent);
}

footer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

/* ===== 响应式布局 ===== */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        height: auto;
        padding: 12px 16px;
        gap: 10px;
    }

    header nav[aria-label="主导航"] ul {
        justify-content: center;
        gap: 4px;
    }

    header nav[aria-label="主导航"] a {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    section[aria-labelledby="hero-title"] {
        min-height: 60vh;
        padding: 40px 16px;
    }

    section {
        padding: 32px 16px;
    }

    section[aria-labelledby]:not([aria-labelledby="hero-title"]) {
        margin-left: 12px;
        margin-right: 12px;
        padding: 24px 16px;
    }

    h2::after {
        width: 40px;
    }

    section:hover h2::after {
        width: 70px;
    }

    article {
        padding: 16px;
    }

    blockquote {
        padding: 16px;
    }

    footer nav[aria-label="底部导航"] ul {
        gap: 12px 16px;
    }
}

@media (max-width: 480px) {
    section[aria-labelledby="hero-title"] h1 {
        font-size: 1.8rem;
    }

    section[aria-labelledby="hero-title"] div {
        flex-direction: column;
        align-items: center;
    }

    button, [role="button"], a[role="button"] {
        padding: 10px 24px;
        font-size: 0.95rem;
        width: 100%;
        max-width: 260px;
    }

    header nav[aria-label="主导航"] a {
        font-size: 0.8rem;
        padding: 4px 10px;
    }
}

/* ===== 动画辅助（滚动触发需配合JS，但样式已就绪） ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== 时间标签样式 ===== */
time {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.06);
    padding: 4px 12px;
    border-radius: 20px;
    margin-top: 8px;
}

/* ===== 列表内strong（团队） ===== */
li strong {
    color: var(--text);
}

/* ===== 图片/Logo占位（SVG内联已处理） ===== */
svg {
    display: block;
}

/* ===== 通用间距微调 ===== */
section[aria-labelledby="hero-title"] + section {
    margin-top: 0;
}

/* ===== 知识中心链接列表 ===== */
section[aria-labelledby="knowledge-title"] ul {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 0;
    list-style: none;
}

section[aria-labelledby="knowledge-title"] li {
    margin: 0;
}

section[aria-labelledby="knowledge-title"] a {
    display: inline-block;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

section[aria-labelledby="knowledge-title"] a:hover {
    background: rgba(233, 69, 96, 0.12);
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* ===== 操作指南有序列表 ===== */
ol {
    counter-reset: step;
    list-style: none;
    padding: 0;
}

ol li {
    counter-increment: step;
    padding: 10px 16px 10px 44px;
    position: relative;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    transition: background var(--transition);
}

ol li::before {
    content: counter(step);
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

ol li:hover {
    background: rgba(233, 69, 96, 0.08);
}

/* ===== 服务项目列表 ===== */
section[aria-labelledby="services-title"] ul,
section[aria-labelledby="features-title"] ul,
section[aria-labelledby="advantages-title"] ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

section[aria-labelledby="services-title"] li,
section[aria-labelledby="features-title"] li,
section[aria-labelledby="advantages-title"] li {
    background: rgba(255, 255, 255, 0.04);
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.06);
    margin: 0;
    transition: background var(--transition), transform var(--transition), border-color var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}

section[aria-labelledby="services-title"] li::before,
section[aria-labelledby="features-title"] li::before,
section[aria-labelledby="advantages-title"] li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
    font-size: 1.2rem;
}

section[aria-labelledby="services-title"] li:hover,
section[aria-labelledby="features-title"] li:hover,
section[aria-labelledby="advantages-title"] li:hover {
    background: rgba(233, 69, 96, 0.08);
    transform: translateY(-2px);
    border-color: var(--accent);
}

/* ===== 核心团队列表 ===== */
section[aria-labelledby="team-title"] ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

section[aria-labelledby="team-title"] li {
    background: rgba(255, 255, 255, 0.04);
    padding: 20px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.06);
    margin: 0;
    transition: background var(--transition), transform var(--transition);
}

section[aria-labelledby="team-title"] li:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

/* ===== 成功案例 ===== */
section[aria-labelledby="case-studies-title"] article {
    border-left: 4px solid var(--accent);
}

/* ===== 最新洞察时间标签 ===== */
section[aria-labelledby="insights-title"] article time {
    display: inline-block;
    margin-top: 8px;
}

/* ===== 联系信息卡片 ===== */
section[aria-labelledby="contact-title"] address {
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    padding: 24px;
}

/* ===== 所有section标题统一动画 ===== */
section[aria-labelledby]:not([aria-labelledby="hero-title"]) h2 {
    transition: color var(--transition);
}

/* ===== 小屏幕下网格调整为单列 ===== */
@media (max-width: 600px) {
    section[aria-labelledby="services-title"] ul,
    section[aria-labelledby="features-title"] ul,
    section[aria-labelledby="advantages-title"] ul,
    section[aria-labelledby="team-title"] ul {
        grid-template-columns: 1fr;
    }
}

/* ===== 高对比度/可访问性优化 ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* ===== 暗色模式微调（系统偏好light时依然保持深色） ===== */
@media (prefers-color-scheme: light) {
    body {
        background: var(--primary);
        color: var(--text);
    }
    section[aria-labelledby]:not([aria-labelledby="hero-title"]) {
        background: var(--card-bg);
    }
}