/* ===== 全局样式 ===== */
:root {
    --canvas: #fcfcfc;
    --sky-tint: #f0f4fe;
    --midnight: #020520;
    --graphite: #14141e;
    --slate: #374151;
    --fog: #696a72;
    --fog-deep: #95959b;
    --steel: #6b7280;
    --signal-blue: #145aff;
    --action: #0f1f3d;
    --emerald: #16ca2e;
    --coral: #f26052;
    --sky-info: #0099ff;
    --amber: #ffa64d;
    --hero-gradient: linear-gradient(rgb(59, 130, 246) 0%, rgb(20, 90, 255) 100%);
    --primary-cta: linear-gradient(rgb(59, 130, 246) 0%, rgb(20, 90, 255) 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--graphite);
    background: var(--canvas);
    line-height: 1.5;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

img {
    max-width: 100%;
    display: block;
}

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===== 容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--sky-tint);
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: var(--signal-blue);
    background: rgba(20, 90, 255, 0.08);
    padding: 4px 12px;
    border-radius: 100px;
    margin-bottom: 16px;
    letter-spacing: 0.13px;
}

.section-title {
    font-size: 40px;
    font-weight: 600;
    line-height: 1.08;
    color: var(--midnight);
    letter-spacing: -0.76px;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--fog);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(252, 252, 252, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(20, 20, 30, 0.06);
    z-index: 1000;
    transition: all 0.3s;
}

.navbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
    color: var(--midnight);
    letter-spacing: -0.16px;
}

.logo-mark {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--hero-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 2px 8px rgba(20, 90, 255, 0.25);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--slate);
    border-radius: 100px;
    transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
    background: var(--sky-tint);
    color: var(--graphite);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    cursor: pointer;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--midnight);
    transition: all 0.2s;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    border: 1px solid transparent;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.8);
    color: var(--action);
    border-color: var(--action);
}

.btn-outline:hover {
    background: var(--action);
    color: #fff;
}

.btn-primary {
    background: var(--primary-cta);
    color: #fff;
    font-weight: 600;
}

.btn-primary:hover {
    box-shadow: 0 8px 20px rgba(20, 90, 255, 0.3);
    transform: translateY(-1px);
}

.btn-ghost-pill {
    background: #fcfcfc;
    color: var(--signal-blue);
    border: 1px solid rgba(20, 90, 255, 0.3);
    border-radius: 50px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
}

.btn-ghost-pill:hover {
    border-color: var(--signal-blue);
    background: #fff;
}

.btn-text {
    color: var(--action);
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.btn-text:hover {
    color: var(--signal-blue);
}

.btn-text::after {
    content: '→';
    transition: transform 0.2s;
}

.btn-text:hover::after {
    transform: translateX(4px);
}

/* ===== Hero Banner ===== */
.hero {
    position: relative;
    padding: 160px 0 120px;
    text-align: center;
    overflow: hidden;
    background: radial-gradient(97.8% 181.6% at 53.7% 50%, rgba(182, 203, 253, 0.4) 0%, rgba(240, 244, 254, 0.6) 60%, var(--canvas) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(20, 90, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(20, 20, 30, 0.08);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
    color: var(--slate);
    margin-bottom: 32px;
    position: relative;
}

.hero-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--emerald);
    box-shadow: 0 0 8px var(--emerald);
}

.hero-title {
    font-size: 64px;
    font-weight: 600;
    line-height: 1.05;
    color: var(--midnight);
    letter-spacing: -1.51px;
    margin-bottom: 24px;
    position: relative;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-title .highlight {
    background: var(--hero-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--fog);
    line-height: 1.6;
    max-width: 640px;
    margin: 0 auto 40px;
    position: relative;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

/* ===== 核心优势 ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 24px;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: rgba(0, 0, 0, 0.082) 0px 4px 16px -2px, rgba(0, 0, 0, 0.07) 0px 8px 24px -4px, rgba(0, 0, 0, 0.016) 0px 12px 40px -8px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--sky-tint);
    color: var(--signal-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 8px;
    letter-spacing: -0.16px;
}

.feature-desc {
    font-size: 14px;
    color: var(--fog);
    line-height: 1.6;
}

/* ===== 关于我们 ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    border-radius: 40px;
    background: linear-gradient(135deg, #f0f4fe 0%, #b6cbfd 100%);
    padding: 60px 40px;
    text-align: center;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--action);
    font-size: 80px;
    font-weight: 600;
    letter-spacing: -2.96px;
    position: relative;
    overflow: hidden;
}

.about-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 30%, rgba(20, 90, 255, 0.1), transparent 60%);
}

.about-content .section-eyebrow {
    margin-bottom: 16px;
}

.about-content h2 {
    font-size: 40px;
    font-weight: 600;
    line-height: 1.08;
    color: var(--midnight);
    letter-spacing: -0.76px;
    margin-bottom: 24px;
}

.about-content p {
    font-size: 15px;
    color: var(--slate);
    line-height: 1.7;
    margin-bottom: 16px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(20, 20, 30, 0.08);
}

.stat-number {
    font-family: 'Roboto Mono', monospace;
    font-size: 40px;
    font-weight: 600;
    color: var(--midnight);
    letter-spacing: -0.76px;
    margin-bottom: 4px;
}

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

/* ===== 产品展示 ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-4px);
}

.product-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--sky-tint);
    color: var(--signal-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 24px;
}

.product-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 8px;
    letter-spacing: -0.22px;
}

.product-desc {
    font-size: 14px;
    color: var(--fog);
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.product-tag {
    font-size: 11px;
    font-weight: 500;
    color: var(--signal-blue);
    background: rgba(20, 90, 255, 0.08);
    padding: 3px 8px;
    border-radius: 4px;
}

.product-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--action);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: auto;
}

.product-link::after {
    content: '→';
    transition: transform 0.2s;
}

.product-card:hover .product-link::after {
    transform: translateX(4px);
}

/* ===== 客户案例 ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    transform: translateY(-4px);
}

.case-cover {
    height: 180px;
    background: linear-gradient(135deg, #f0f4fe 0%, #b6cbfd 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--action);
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.22px;
    position: relative;
}

.case-cover.cover-2 { background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%); }
.case-cover.cover-3 { background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%); }
.case-cover.cover-4 { background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%); }
.case-cover.cover-5 { background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%); }
.case-cover.cover-6 { background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%); }

.case-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-meta {
    font-size: 12px;
    color: var(--fog);
    margin-bottom: 8px;
}

.case-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 8px;
    letter-spacing: -0.16px;
}

.case-desc {
    font-size: 14px;
    color: var(--fog);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}

/* ===== 新闻动态 ===== */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 880px;
    margin: 0 auto;
}

.news-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px;
    background: #fff;
    border-radius: 16px;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    transition: all 0.3s;
}

.news-item:hover {
    transform: translateX(4px);
}

.news-date {
    flex-shrink: 0;
    width: 80px;
    text-align: center;
    padding: 12px 0;
    background: var(--sky-tint);
    border-radius: 12px;
}

.news-day {
    font-size: 28px;
    font-weight: 600;
    color: var(--midnight);
    line-height: 1;
    letter-spacing: -0.22px;
}

.news-month {
    font-size: 12px;
    color: var(--fog);
    margin-top: 4px;
}

.news-content {
    flex: 1;
}

.news-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 500;
    color: var(--signal-blue);
    background: rgba(20, 90, 255, 0.08);
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 8px;
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 4px;
    letter-spacing: -0.16px;
}

.news-summary {
    font-size: 14px;
    color: var(--fog);
    line-height: 1.5;
}

/* ===== 联系我们 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: start;
}

.contact-info h3 {
    font-size: 28px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 16px;
    letter-spacing: -0.22px;
}

.contact-info > p {
    font-size: 15px;
    color: var(--fog);
    line-height: 1.6;
    margin-bottom: 32px;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--sky-tint);
    color: var(--signal-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.contact-detail-label {
    font-size: 12px;
    color: var(--fog);
    margin-bottom: 2px;
}

.contact-detail-value {
    font-size: 15px;
    color: var(--graphite);
    font-weight: 500;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--sky-tint);
    color: var(--signal-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all 0.2s;
}

.social-link:hover {
    background: var(--signal-blue);
    color: #fff;
}

/* 表单 */
.contact-form {
    background: #fff;
    border-radius: 24px;
    padding: 40px;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--slate);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    background: #fff;
    border: 1px solid #cfcfcf;
    border-radius: 12px;
    font-size: 14px;
    color: var(--graphite);
    font-family: inherit;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--sky-info);
    box-shadow: rgba(0, 153, 255, 0.15) 0px 0px 0px 3px;
}

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

.form-submit {
    width: 100%;
    margin-top: 8px;
}

/* 地图 */
.map {
    width: 100%;
    height: 280px;
    border-radius: 24px;
    overflow: hidden;
    background: var(--sky-tint);
    margin-top: 32px;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--fog);
    background: linear-gradient(135deg, #eef2ff 0%, #dbeafe 50%, #c7d2fe 100%);
}

.map-overlay {
    background: rgba(255,255,255,0.85);
    padding: 16px 24px;
    border-radius: 12px;
    backdrop-filter: blur(8px);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.map-overlay strong {
    display: block;
    font-size: 14px;
    color: var(--midnight);
    margin-bottom: 4px;
}

.map-overlay span {
    font-size: 12px;
    color: var(--fog);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--midnight);
    color: #fff;
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand {
    max-width: 320px;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-title {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: 0.13px;
    text-transform: uppercase;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-link {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.2s;
}

.footer-link:hover {
    color: #fff;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
    margin: 0 8px;
}

/* ===== 页面标题（内页） ===== */
.page-hero {
    padding: 160px 0 80px;
    text-align: center;
    background: radial-gradient(97.8% 181.6% at 53.7% 50%, rgba(182, 203, 253, 0.3) 0%, rgba(240, 244, 254, 0.4) 60%, var(--canvas) 100%);
    position: relative;
}

.page-breadcrumb {
    font-size: 13px;
    color: var(--fog);
    margin-bottom: 16px;
}

.page-breadcrumb a {
    color: var(--signal-blue);
}

.page-title {
    font-size: 56px;
    font-weight: 600;
    line-height: 1.05;
    color: var(--midnight);
    letter-spacing: -1.51px;
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 18px;
    color: var(--fog);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== 详情页 ===== */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 48px;
    margin-top: 48px;
}

.detail-content {
    background: #fff;
    border-radius: 16px;
    padding: 48px;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
}

.detail-content h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--midnight);
    margin: 32px 0 16px;
    letter-spacing: -0.22px;
}

.detail-content h2:first-child {
    margin-top: 0;
}

.detail-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--graphite);
    margin: 24px 0 12px;
    letter-spacing: -0.22px;
}

.detail-content p {
    font-size: 15px;
    color: var(--slate);
    line-height: 1.8;
    margin-bottom: 16px;
}

.detail-content ul, .detail-content ol {
    margin: 16px 0 16px 24px;
    color: var(--slate);
    line-height: 1.8;
}

.detail-content li {
    list-style: disc;
    margin-bottom: 8px;
}

.detail-content ol li {
    list-style: decimal;
}

.detail-sidebar {
    position: sticky;
    top: 96px;
    align-self: start;
}

.sidebar-block {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    margin-bottom: 16px;
}

.sidebar-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.13px;
}

.sidebar-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-link {
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 14px;
    color: var(--slate);
    transition: all 0.2s;
}

.sidebar-link:hover, .sidebar-link.active {
    background: var(--sky-tint);
    color: var(--graphite);
}

.cta-card {
    background: var(--hero-gradient);
    color: #fff;
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
}

.cta-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.cta-card p {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 20px;
    line-height: 1.5;
}

.cta-card .btn {
    background: #fff;
    color: var(--action);
    width: 100%;
}

/* 时间线 */
.timeline {
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--sky-tint);
}

.timeline-item {
    position: relative;
    padding-bottom: 32px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -32px;
    top: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--signal-blue);
}

.timeline-year {
    font-family: 'Roboto Mono', monospace;
    font-size: 18px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 4px;
    letter-spacing: -0.16px;
}

.timeline-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 4px;
}

.timeline-desc {
    font-size: 14px;
    color: var(--fog);
    line-height: 1.6;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.team-card {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
}

.team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 16px;
    background: var(--sky-tint);
    color: var(--signal-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 600;
}

.team-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 4px;
}

.team-role {
    font-size: 13px;
    color: var(--fog);
    margin-bottom: 8px;
}

.team-bio {
    font-size: 13px;
    color: var(--steel);
    line-height: 1.5;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.value-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 24px;
    box-shadow: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
}

.value-num {
    font-family: 'Roboto Mono', monospace;
    font-size: 32px;
    font-weight: 600;
    color: var(--signal-blue);
    margin-bottom: 12px;
    letter-spacing: -0.22px;
}

.value-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--midnight);
    margin-bottom: 8px;
    letter-spacing: -0.16px;
}

.value-desc {
    font-size: 14px;
    color: var(--fog);
    line-height: 1.6;
}

/* ===== 响应式 ===== */
@media (max-width: 960px) {
    .features-grid,
    .products-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid,
    .contact-grid,
    .detail-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

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

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

    .hero-title {
        font-size: 44px;
    }

    .page-title {
        font-size: 40px;
    }

    .section-title {
        font-size: 32px;
    }
}

@media (max-width: 720px) {
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links.mobile-open {
        display: flex;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    }

    .nav-links.mobile-open .nav-link {
        width: 100%;
        text-align: left;
    }

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

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

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

    .hero {
        padding: 120px 0 80px;
    }

    .hero-title {
        font-size: 36px;
        letter-spacing: -0.76px;
    }

    .section {
        padding: 56px 0;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .news-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .news-date {
        width: 64px;
    }
}

/* 动画 */
@keyframes fadeUp {
    from {
        opacity: 0.01;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-up {
    animation: fadeUp 0.6s ease-out forwards;
}

.no-animation,
.no-animation * {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #9ca3af;
}