/* ========================================
   诸葛低空 (zgdk.cc) 全站样式
   设计语言: 深邃科技蓝 + 精致专业感
   ======================================== */

/* --- 设计令牌 --- */
:root {
    --bg: #0a1628;
    --bg-alt: #0e1f35;
    --surface: rgba(14, 31, 53, 0.7);
    --surface-hover: rgba(20, 42, 68, 0.85);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(100, 180, 255, 0.35);
    --text: #e8f0fa;
    --text-secondary: #8fa8c8;
    --accent: #00d4aa;
    --accent-2: #3b8cff;
    --highlight: #f4b23f;
    --radius: 16px;
    --radius-sm: 10px;
    --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-display: "ZCOOL XiaoWei", serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

/* --- 容器 --- */
.container {
    width: min(1200px, calc(100% - 48px));
    margin: 0 auto;
}

/* --- 背景光斑 --- */
.bg-orb {
    pointer-events: none;
    position: fixed;
    z-index: -1;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
}

.bg-orb-1 {
    width: 500px;
    height: 500px;
    background: #1e6cff;
    top: -100px;
    left: -150px;
}

.bg-orb-2 {
    width: 400px;
    height: 400px;
    background: #00d4aa;
    top: 50%;
    right: -120px;
}

.bg-orb-3 {
    width: 350px;
    height: 350px;
    background: #6c3bff;
    bottom: 10%;
    left: 20%;
}

/* ========== 顶部导航 ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(16px) saturate(1.4);
    background: rgba(10, 22, 40, 0.75);
    border-bottom: 1px solid var(--border);
}

.nav-wrap {
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
    line-height: 1;
}

.brand-cn {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: #fff;
    letter-spacing: 0.05em;
}

.brand-sub {
    font-size: 0.78rem;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
}

.brand-parent {
    font-size: 0.68rem;
    color: rgba(180, 210, 240, 0.85);
    letter-spacing: 0.06em;
    padding: 3px 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    white-space: nowrap;
    align-self: center;
}

.main-nav {
    display: flex;
    gap: 28px;
}

.main-nav a {
    font-size: 0.92rem;
    color: #b0c8e0;
    transition: color 0.2s;
    position: relative;
}

.main-nav a:hover {
    color: #fff;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform 0.25s;
}

.main-nav a:hover::after {
    transform: scaleX(1);
}

/* --- 汉堡按钮（桌面端隐藏） --- */
.nav-toggle {
    display: none;
}

/* --- 按钮 --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    height: 46px;
    padding: 0 28px;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #021018;
    box-shadow: 0 8px 30px rgba(0, 212, 170, 0.2);
}

.btn-primary:hover {
    box-shadow: 0 12px 40px rgba(0, 212, 170, 0.35);
}

.btn-outline {
    border-color: rgba(255, 255, 255, 0.25);
    color: #dde8f5;
}

.btn-outline:hover {
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.04);
}

.btn-cta {
    border-color: rgba(255, 255, 255, 0.3);
    color: #e0edff;
    height: 40px;
    padding: 0 20px;
    font-size: 0.88rem;
}

.btn-cta:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ========== HERO 区域 ========== */
.hero {
    padding: 100px 0 60px;
    text-align: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 22, 40, 0.88) 0%, rgba(10, 22, 40, 0.72) 50%, rgba(10, 22, 40, 0.92) 100%);
    z-index: 0;
}

.hero>.container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    border-radius: 999px;
    border: 1px solid rgba(244, 178, 63, 0.35);
    background: rgba(244, 178, 63, 0.08);
    color: var(--highlight);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    margin-bottom: 24px;
}

.hero-parent {
    display: block;
    font-size: 0.9rem;
    font-weight: 400;
    color: rgba(180, 210, 240, 0.7);
    letter-spacing: 0.1em;
    margin-bottom: 6px;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 20px;
    color: #fff;
}

.hero-highlight {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.08rem;
    color: var(--text-secondary);
    max-width: 720px;
    margin: 0 auto 32px;
    line-height: 1.85;
}

.hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

/* --- Hero 双服务卡片 --- */
.hero-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.hero-card {
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    text-align: left;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.hero-card--gov::before {
    background: linear-gradient(180deg, var(--accent), transparent);
}

.hero-card--biz::before {
    background: linear-gradient(180deg, var(--accent-2), transparent);
}

.hero-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.hero-card-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.hero-card-icon {
    font-size: 1.5rem;
}

.hero-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
}

.hero-card>p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 14px;
}

.flow-steps {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.flow-steps span {
    font-size: 0.78rem;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #c0d4e8;
    white-space: nowrap;
}

.hero-card--gov .flow-steps span {
    border-color: rgba(0, 212, 170, 0.2);
}

.hero-card--biz .flow-steps span {
    border-color: rgba(59, 140, 255, 0.2);
}

/* ========== 信任指标条 ========== */
.trust-strip {
    padding: 24px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, rgba(14, 31, 53, 0.6), rgba(10, 22, 40, 0.8));
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.trust-item {
    text-align: center;
    padding: 12px;
}

.trust-item strong {
    display: block;
    font-size: 1rem;
    color: #fff;
    margin-bottom: 4px;
}

.trust-item span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ========== 通用 Section ========== */
.section {
    padding: 80px 0;
}

.section-alt {
    background: linear-gradient(135deg, rgba(14, 31, 53, 0.5), rgba(10, 22, 40, 0.7));
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-head {
    text-align: center;
    margin-bottom: 44px;
}

.label {
    color: var(--highlight);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.78rem;
    margin-bottom: 10px;
}

.section-head h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 8px;
}

.section-desc {
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ========== 核心能力 ========== */
.cap-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.cap-card {
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    transition: border-color 0.3s, transform 0.3s;
}

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

.cap-num {
    display: inline-flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-weight: 800;
    font-size: 0.9rem;
    color: var(--bg);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    margin-bottom: 16px;
}

.cap-card h3 {
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 8px;
}

.cap-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 专业栏目 ========== */
.col-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.col-card {
    display: flex;
    flex-direction: column;
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    transition: all 0.3s;
    position: relative;
}

.col-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.col-tag {
    font-size: 0.75rem;
    color: var(--highlight);
    letter-spacing: 0.08em;
    margin-bottom: 10px;
}

.col-card h3 {
    font-size: 1.15rem;
    color: #fff;
    margin-bottom: 8px;
}

.col-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
    flex: 1;
}

.col-arrow {
    font-size: 1.3rem;
    color: var(--accent);
    margin-top: 12px;
    transition: transform 0.3s;
}

.col-card:hover .col-arrow {
    transform: translateX(6px);
}

/* ========== 产业链路 ========== */
.industry-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.industry-layout h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    color: #fff;
    margin-bottom: 12px;
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.tag-row span {
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 7px 16px;
    font-size: 0.88rem;
    color: #bdd0e4;
    background: rgba(255, 255, 255, 0.03);
    transition: border-color 0.2s;
}

.tag-row span:hover {
    border-color: var(--accent);
}

.industry-img img {
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    aspect-ratio: 16 / 9;
    object-fit: cover;
    max-height: 320px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

/* ========== 应用场景 ========== */
.scene-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.scene-card {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--surface);
    transition: all 0.3s;
}

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

.scene-card img {
    height: 200px;
    width: 100%;
    object-fit: cover;
}

.scene-body {
    padding: 20px;
}

.scene-body h3 {
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 6px;
}

.scene-body p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 实施路径 ========== */
.method-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.method-step {
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    transition: all 0.3s;
    text-align: center;
}

.method-step:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.step-num {
    display: inline-flex;
    width: 48px;
    height: 48px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 800;
    font-size: 1rem;
    color: var(--bg);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    margin-bottom: 16px;
}

.method-step h3 {
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 8px;
}

.method-step p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 行业洞察 ========== */
.insight-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.insight-card {
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    transition: all 0.3s;
}

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

.insight-tag {
    font-size: 0.78rem;
    color: var(--highlight);
    letter-spacing: 0.1em;
}

.insight-card h3 {
    font-size: 1.05rem;
    color: #fff;
    margin: 10px 0 8px;
    line-height: 1.4;
}

.insight-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ========== 常见问题 ========== */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.faq-card {
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    transition: all 0.3s;
}

.faq-card:hover {
    border-color: var(--border-hover);
}

.faq-card h3 {
    font-size: 1.05rem;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.4;
}

.faq-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ========== 友情链接 ========== */
.link-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
}

.link-card {
    padding: 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface);
    text-align: center;
    transition: all 0.3s;
}

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

.link-card h3 {
    font-size: 1rem;
    color: #fff;
    margin-bottom: 4px;
}

.link-card p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ========== CTA ========== */
.cta-section {
    padding: 80px 0;
}

.cta-box {
    padding: 0;
    border-radius: 24px;
    border: 1px solid var(--border);
    background: linear-gradient(135deg, rgba(14, 38, 62, 0.9), rgba(10, 22, 40, 0.95));
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.cta-content {
    display: grid;
    grid-template-columns: 0.45fr 0.55fr;
    align-items: center;
}

.cta-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 280px;
}

.cta-text {
    padding: 40px;
}

.cta-text h2 {
    font-size: clamp(1.4rem, 3vw, 2rem);
    color: #fff;
    margin-bottom: 12px;
}

.cta-text>p {
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 0 28px;
    line-height: 1.7;
}

.cta-actions {
    margin-bottom: 20px;
}

.cta-qr {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 20px 0;
}

.cta-qr img {
    width: 120px;
    height: 120px;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    background: #fff;
    padding: 4px;
}

.cta-qr span {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.cta-domain {
    font-size: 0.85rem;
    color: var(--text-secondary);
    letter-spacing: 0.12em;
}

/* --- 子页面 Hero 背景图 --- */
.page-hero--bg {
    padding-top: 82px;
    padding-bottom: 48px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.page-hero--bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 22, 40, 0.9) 0%, rgba(10, 22, 40, 0.78) 50%, rgba(10, 22, 40, 0.95) 100%);
    z-index: 0;
}

.page-hero--bg>.container {
    position: relative;
    z-index: 1;
}

/* --- 通用 contact-box（子页面底部 CTA） --- */
.contact-box {
    border: 1px solid var(--border);
    border-radius: 20px;
    background: linear-gradient(120deg, rgba(17, 46, 63, 0.95), rgba(11, 24, 38, 0.95));
    padding: 36px;
    text-align: center;
}

.contact-box h2 {
    margin-bottom: 10px;
    color: #fff;
}

.contact-box p {
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.contact-box a {
    color: var(--accent);
}

/* --- 紧凑友情链接 --- */
.friend-links {
    padding: 16px 0;
    border-top: 1px solid var(--border);
}

.friend-links .container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 4px;
}

.friend-links-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.friend-links a {
    font-size: 0.82rem;
    color: #7a95b0;
    transition: color 0.2s;
    white-space: nowrap;
}

.friend-links a:hover {
    color: var(--accent);
}

.friend-links a+a::before {
    content: '·';
    margin-right: 4px;
    color: rgba(255, 255, 255, 0.15);
}

/* ========== 页脚 ========== */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 24px 0 32px;
}

.footer-inner {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.88rem;
}

/* ========== 进入动画 ========== */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========== 子页面通用样式（保留兼容性） ========== */
.page-hero {
    padding-top: 82px;
    padding-bottom: 48px;
}

.breadcrumb {
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.breadcrumb a {
    color: #cfe2f3;
}

.page-intro {
    max-width: 820px;
    color: var(--text-secondary);
    line-height: 1.85;
}

.eyebrow {
    color: var(--highlight);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.8rem;
    margin: 0 0 12px;
}

h1,
h2,
h3 {
    margin: 0;
    line-height: 1.22;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 24px;
}

.kpi-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    background: var(--surface);
}

.kpi-card strong {
    display: block;
    font-size: 1.25rem;
}

.kpi-card span {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.list-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    background: var(--surface);
}

.list-card ul {
    margin: 10px 0 0;
    padding-left: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
}

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    vertical-align: top;
}

.data-table th {
    color: #f0f7ff;
    background: rgba(255, 255, 255, 0.04);
}

.data-table td {
    color: var(--text-secondary);
    line-height: 1.75;
}

.timeline {
    display: grid;
    gap: 14px;
}

.timeline-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    padding: 18px;
}

.timeline-item .date {
    color: var(--highlight);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
}

.timeline-item p {
    margin: 8px 0 0;
    color: var(--text-secondary);
    line-height: 1.8;
}

.lead {
    color: var(--text-secondary);
    line-height: 1.85;
    margin: 18px 0 24px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    background: var(--surface);
}

.card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 12px 0 0;
}

.matrix-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.matrix-card {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 22px;
    background: var(--surface);
}

.matrix-card p {
    margin: 10px 0 0;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========== 响应式 ========== */
@media (max-width: 1100px) {
    .hero-cards {
        grid-template-columns: 1fr;
        max-width: 480px;
    }

    .industry-layout {
        grid-template-columns: 1fr;
    }

    .cap-grid,
    .col-grid,
    .method-grid {
        grid-template-columns: 1fr 1fr;
    }

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

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

    .kpi-grid,
    .card-grid,
    .list-grid,
    .matrix-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 800px) {

    /* --- 汉堡按钮 --- */
    .nav-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 6px;
        z-index: 110;
    }

    .nav-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background: #cfe2f3;
        border-radius: 2px;
        transition: transform 0.3s, opacity 0.3s;
    }

    .nav-toggle.open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* --- 移动端导航 --- */
    .main-nav {
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(10, 22, 40, 0.97);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
    }

    .main-nav.open {
        max-height: 320px;
    }

    .main-nav a {
        padding: 14px 24px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .btn-cta {
        display: none;
    }

    .hero {
        padding: 72px 0 48px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-desc br {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 320px;
    }

    .hero-cards {
        grid-template-columns: 1fr;
    }

    .cap-grid,
    .col-grid,
    .method-grid,
    .insight-grid,
    .scene-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .trust-grid {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .trust-item {
        padding: 8px 12px;
        text-align: left;
        display: flex;
        gap: 8px;
        align-items: baseline;
    }

    .trust-item strong {
        margin-bottom: 0;
    }

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

    .section {
        padding: 60px 0;
    }

    .cta-content {
        grid-template-columns: 1fr;
    }

    .cta-img {
        min-height: 200px;
        max-height: 240px;
    }

    .cta-text {
        padding: 28px 20px;
        text-align: center;
    }

    .kpi-grid,
    .card-grid,
    .list-grid,
    .scene-grid,
    .matrix-grid,
    .link-grid {
        grid-template-columns: 1fr;
    }
}