/* ============================================================
   Novatech 诺瓦科技 — 全局样式表
   极简风格 · 淡色调 · 克制的高级感
   ============================================================ */

/* -------------------- CSS 变量（主题配置） -------------------- */
:root {
    /* 主色 */
    --color-bg:          #FAFAFA;   /* 页面背景 */
    --color-surface:     #FFFFFF;   /* 卡片/区块背景 */
    --color-surface-alt: #F4F5F7;   /* 交替区块背景 */
    --color-text:        #1A1A1A;   /* 主文本 */
    --color-text-secondary: #6B7280; /* 次要文本 */
    --color-text-tertiary:  #9CA3AF; /* 辅助文本 */

    /* 强调色 — 低饱和度灰蓝 */
    --color-accent:      #5B7FA4;   /* 主强调色 */
    --color-accent-hover:#4A6B8A;   /* 强调色 hover */
    --color-accent-light:#EBF0F5;   /* 强调色浅底 */

    /* 边框 */
    --color-border:      #E5E7EB;
    --color-border-light:#F0F0F0;

    /* 阴影 */
    --shadow-sm:   0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md:   0 4px 12px rgba(0,0,0,.06), 0 2px 4px rgba(0,0,0,.04);
    --shadow-lg:   0 12px 32px rgba(0,0,0,.08), 0 4px 8px rgba(0,0,0,.04);
    --shadow-xl:   0 20px 48px rgba(0,0,0,.10);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* 过渡 */
    --transition-fast:   .2s cubic-bezier(.4,0,.2,1);
    --transition-normal: .35s cubic-bezier(.4,0,.2,1);
    --transition-slow:   .5s cubic-bezier(.4,0,.2,1);

    /* 排版 */
    --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
                 "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
                 "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;

    /* 容器 */
    --container-max: 1200px;
    --header-height: 64px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

input, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* -------------------- 工具类 -------------------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

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

.section {
    padding: 100px 0;
}

.section-alt {
    background-color: var(--color-surface-alt);
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    margin-bottom: 3rem;
}

/* 页面头部（内页标题区） */
.page-header {
    padding: 140px 0 60px;
    text-align: center;
    background: linear-gradient(180deg, var(--color-accent-light) 0%, var(--color-bg) 100%);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: .5rem;
}

.page-header p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

/* -------------------- 按钮 -------------------- */
.btn {
    display: inline-block;
    padding: 14px 36px;
    font-size: .95rem;
    font-weight: 500;
    border-radius: 50px;
    transition: all var(--transition-fast);
    letter-spacing: .02em;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background-color: var(--color-accent);
    color: #fff;
    transform: translateY(-1px);
}

/* -------------------- 顶部导航 -------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    background: rgba(250,250,250,.82);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0,0,0,.04);
    transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.header.scrolled {
    background: rgba(255,255,255,.92);
    box-shadow: 0 0 0 1px rgba(0,0,0,.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
}

.logo-icon {
    font-size: 1.3rem;
    color: var(--color-accent);
}

/* 桌面导航 */
.nav-desktop {
    display: flex;
    gap: 36px;
}

.nav-link {
    font-size: .9rem;
    font-weight: 450;
    color: var(--color-text-secondary);
    position: relative;
    transition: color var(--transition-fast);
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 汉堡菜单 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-text);
    transition: all var(--transition-fast);
    transform-origin: center;
}

.menu-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 5px);
}

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

.menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -5px);
}

/* 移动端导航 */
.nav-mobile {
    display: none;
    flex-direction: column;
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--color-border);
}

.nav-mobile.open {
    display: flex;
}

.nav-mobile .nav-link {
    padding: 14px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border-light);
}

.nav-mobile .nav-link:last-child {
    border-bottom: none;
}

/* -------------------- 主内容区 -------------------- */
.main-content {
    min-height: 100vh;
    padding-top: var(--header-height);
}

/* 页面切换 */
.page {
    display: none;
}

.page.active {
    display: block;
    animation: pageFadeIn .45s ease forwards;
}

@keyframes pageFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* -------------------- Hero 区域 -------------------- */
.hero {
    position: relative;
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    /* 替换为真实图片时修改此处 */
    background: linear-gradient(145deg, #E8EEF4 0%, #D5DDE6 30%, #C8D3DE 60%, #B8C6D4 100%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(91,127,164,.08) 0%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 60px 24px;
}

.hero-eyebrow {
    font-size: .8rem;
    font-weight: 500;
    letter-spacing: .2em;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}

/* -------------------- 公司简介 -------------------- */
.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.9;
    margin-bottom: 1.2rem;
}

.intro-text p:first-child {
    font-size: 1.05rem;
    color: var(--color-text);
}

/* 占位图（CSS 渐变背景 + 文字） */
.placeholder-img {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    overflow: hidden;
    min-height: 280px;
    background: linear-gradient(135deg, #E0E7EF 0%, #D0D8E3 50%, #C5CED9 100%);
    color: var(--color-accent);
    font-size: .9rem;
    font-weight: 500;
    letter-spacing: .05em;
}

.placeholder-img--tall {
    min-height: 400px;
}

.placeholder-img--wide {
    min-height: 320px;
}

/* 产品占位图 — 根据产品色调变化 */
.product-placeholder {
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: .85rem;
    font-weight: 500;
    letter-spacing: .03em;
    color: #fff;
    text-shadow: 0 1px 3px rgba(0,0,0,.15);
}

/* 不同产品的渐变色 */
.product-placeholder[data-color="blue"]    { background: linear-gradient(135deg, #5B7FA4, #7A9BB8); }
.product-placeholder[data-color="slate"]   { background: linear-gradient(135deg, #64748B, #8494A7); }
.product-placeholder[data-color="teal"]    { background: linear-gradient(135deg, #5F9EA0, #7DB8BA); }
.product-placeholder[data-color="indigo"]  { background: linear-gradient(135deg, #6366A0, #8184B8); }
.product-placeholder[data-color="sand"]    { background: linear-gradient(135deg, #A09070, #B8A88A); }
.product-placeholder[data-color="sage"]    { background: linear-gradient(135deg, #7A9A7E, #94B498); }
.product-placeholder[data-color="mauve"]   { background: linear-gradient(135deg, #9A7FA0, #B498B8); }
.product-placeholder[data-color="steel"]   { background: linear-gradient(135deg, #6B7F8E, #8A9DAE); }

/* 详情页大图占位 */
.detail-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 500;
    color: #fff;
    text-shadow: 0 1px 4px rgba(0,0,0,.15);
    letter-spacing: .05em;
}

/* -------------------- 特色卡片 -------------------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 36px 28px;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-normal);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    color: var(--color-accent);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: .9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* -------------------- 产品卡片 -------------------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
}

.products-highlight {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.product-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-normal);
    cursor: pointer;
}

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

.product-card:hover .product-placeholder {
    transform: scale(1.03);
}

.product-card-img {
    overflow: hidden;
    padding: 20px;
    background: var(--color-surface-alt);
}

.product-card-body {
    padding: 20px 24px 24px;
}

.product-card-name {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.product-card-desc {
    font-size: .85rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.product-card-btn {
    font-size: .85rem;
    font-weight: 500;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition-fast);
}

.product-card:hover .product-card-btn {
    gap: 8px;
}

/* -------------------- 产品详情 -------------------- */
.back-link {
    display: inline-flex;
    align-items: center;
    font-size: .9rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-accent);
}

.detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.detail-image {
    position: sticky;
    top: calc(var(--header-height) + 24px);
}

.detail-info h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: .5rem;
}

.detail-info .detail-tagline {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.detail-features {
    margin-bottom: 2.5rem;
}

.detail-features h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.detail-features ul {
    list-style: none;
}

.detail-features li {
    padding: 10px 0;
    font-size: .92rem;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.6;
}

.detail-features li::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    margin-top: 8px;
    flex-shrink: 0;
}

/* 规格表 */
.detail-specs h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--color-border-light);
}

.specs-table td {
    padding: 12px 0;
    font-size: .9rem;
}

.specs-table td:first-child {
    color: var(--color-text-secondary);
    width: 140px;
    font-weight: 450;
}

.specs-table td:last-child {
    color: var(--color-text);
}

/* -------------------- 底部 CTA -------------------- */
.section-cta {
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-accent-light) 100%);
    padding: 100px 0;
}

.section-cta h2 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: .75rem;
}

.section-cta p {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

/* -------------------- 关于我们 -------------------- */
.about-story {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.about-text p {
    font-size: .98rem;
    color: var(--color-text-secondary);
    line-height: 1.9;
    margin-bottom: 1.2rem;
}

/* 愿景/使命/价值观 */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.value-item {
    text-align: center;
    padding: 40px 24px;
}

.value-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-accent);
}

.value-item p {
    font-size: .95rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* 数据展示 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item {
    padding: 32px 16px;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}

.stat-label {
    font-size: .9rem;
    color: var(--color-text-secondary);
}

/* -------------------- 联系我们 -------------------- */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2,
.contact-form h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    color: var(--color-accent);
    padding: 8px;
    background: var(--color-accent-light);
    border-radius: var(--radius-sm);
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-item h4 {
    font-size: .9rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: .88rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

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

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

.form-group label {
    display: block;
    font-size: .85rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: .92rem;
    color: var(--color-text);
    background: var(--color-surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(91,127,164,.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-tertiary);
}

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

/* -------------------- 页脚 -------------------- */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border-light);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    font-size: .88rem;
    color: var(--color-text-secondary);
    margin-top: 12px;
}

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

.footer-links h4 {
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
}

.footer-links a {
    font-size: .85rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--color-border-light);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: .8rem;
    color: var(--color-text-tertiary);
}

/* -------------------- 淡入动画 -------------------- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* Hero 区域的延迟动画 */
.hero-content .fade-in:nth-child(1) { transition-delay: .1s; }
.hero-content .fade-in:nth-child(2) { transition-delay: .25s; }
.hero-content .fade-in:nth-child(3) { transition-delay: .4s; }
.hero-content .fade-in:nth-child(4) { transition-delay: .55s; }

/* -------------------- 响应式 -------------------- */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .detail-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .detail-image {
        position: static;
    }

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

@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .section {
        padding: 64px 0;
    }

    .section-title {
        font-size: 1.6rem;
    }

    /* 导航 */
    .nav-desktop {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    /* Hero */
    .hero {
        min-height: 80vh;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    /* 公司简介 */
    .intro-grid,
    .about-story {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .intro-visual {
        order: -1;
    }

    /* 特色 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card {
        padding: 28px 24px;
    }

    /* 产品 */
    .products-highlight,
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    /* 详情 */
    .detail-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    /* 关于 */
    .values-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .stat-number {
        font-size: 2rem;
    }

    /* 联系 */
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

    .page-header {
        padding: 100px 0 40px;
    }

    .page-header h1 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .hero-title {
        font-size: 1.9rem;
    }

    .btn {
        padding: 12px 28px;
        font-size: .9rem;
    }
}

/* -------------------- 滚动条美化 -------------------- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-tertiary);
}

/* -------------------- 选中文字颜色 -------------------- */
::selection {
    background: var(--color-accent-light);
    color: var(--color-accent);
}