style.css

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Arial', 'Microsoft YaHei', sans-serif;
}

:root {
    --primary: #44b3d3;    /* 主色-改为用户指定的颜色 */
    --accent: #f97316;     /* 强调色-橙 */
    --light: #f8fafc;      /* 浅背景 */
    --dark: #0f1724;       /* 文字主色 */
    --muted: #64748b;      /* 次要文字 */
    --card: #ffffff;
    --shadow: 0 8px 30px rgba(8,15,30,0.06);
    --glass: rgba(255,255,255,0.6);
}

html, body {
    height: 100%;
}

body {
    color: var(--dark);
    line-height: 1.6;
    background: linear-gradient(180deg, #fbfdff 0%, #ffffff 100%);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

.container {
    width: 92%;
    max-width: 1100px;
    margin: 0 auto;
}

.visually-hidden { position: absolute !important; height: 1px; width: 1px; overflow: hidden; clip: rect(1px,1px,1px,1px); white-space: nowrap; }

/* 导航栏 */
.navbar {
    position: fixed;
    top: 16px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(6px);
    padding: 0.6rem 0;
    z-index: 999;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.nav-wrap { display: flex; justify-content: space-between; align-items: center; }

.logo { display: flex; gap: 0.6rem; align-items: center; color: var(--primary); font-weight: 700; }
.logo i { color: var(--accent); font-size: 1.45rem; }
.logo-text { font-size: 1.15rem; }

.nav-right { display: flex; gap: 1rem; align-items: center; }
.nav-links { list-style: none; display: flex; gap: 1rem; align-items: center; }
.nav-links a { padding: 0.5rem 0.6rem; color: var(--muted); border-radius: 6px; font-weight: 500; }
.nav-links a:hover, .nav-links a:focus { color: var(--dark); background: rgba(68,179,211,0.06); }

.github-btn { background: var(--primary); color: #fff; padding: 0.45rem 0.9rem; border-radius: 8px; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.5rem; transition: transform 0.18s ease, box-shadow 0.18s; }
.github-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(68,179,211,0.12); }

.nav-toggle { display: none; background: transparent; border: none; cursor: pointer; padding: 0.4rem; border-radius: 8px; color: var(--muted); }
.nav-toggle:focus { outline: 2px solid rgba(37,99,235,0.18); }

/* 核心介绍区 */
.hero { margin-top: 86px; padding: 5rem 0; }
.hero-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 2.2rem; align-items: center; }

.hero-text h1 { font-size: 2.6rem; margin-bottom: 1rem; line-height: 1.05; }
.hero-text h1 span { color: var(--primary) !important; }

.hero-text p { font-size: 1.05rem; color: var(--muted); margin-bottom: 1.6rem; max-width: 520px; }

.hero-ctas { display: flex; gap: 0.8rem; align-items: center; margin-bottom: 1rem; }
.btn { display: inline-block; background: linear-gradient(90deg, var(--primary), #3aa3c1); color: #fff; padding: 0.72rem 1.6rem; border-radius: 10px; font-weight: 700; box-shadow: 0 6px 20px rgba(68,179,211,0.12); transition: transform 0.18s ease, box-shadow 0.18s; }
.btn:hover { transform: translateY(-4px); }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid rgba(68,179,211,0.12); padding: 0.6rem 1.2rem; box-shadow: none; }
.hero-ctas .btn:first-child { background: linear-gradient(90deg, var(--primary), #3aa3c1) !important; color: #fff !important; box-shadow: 0 6px 20px rgba(68,179,211,0.12) !important; }

.badges { display: flex; gap: 0.6rem; margin-top: 0.6rem; }
.badge { background: rgba(15,23,36,0.05); color: var(--muted); padding: 0.3rem 0.6rem; border-radius: 999px; font-size: 0.85rem; }

.hero-img img { width: 100%; height: auto; border-radius: 14px; box-shadow: var(--shadow); transform-origin: center; transition: transform 0.6s cubic-bezier(.2,.9,.2,1); }
.hero-img img:hover { transform: translateY(-6px) rotate(-0.5deg); }

/* 核心功能区 */
.feature { padding: 5rem 0; }
.section-title { font-size: 1.6rem; margin-bottom: 2rem; color: var(--dark); position: relative; text-align: center; }
.section-title::after { content: ''; width: 64px; height: 4px; background: linear-gradient(90deg,var(--accent),var(--primary)); position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%); border-radius: 4px; }

.feature-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; margin-top: 1.2rem; }
.feature-card { background: var(--card); padding: 2rem; border-radius: 12px; box-shadow: 0 10px 30px rgba(8,15,30,0.04); transition: transform 0.28s ease, box-shadow 0.28s ease; text-align: left; }
.feature-card i { font-size: 2rem; color: var(--primary); margin-bottom: 0.8rem; display: inline-block; }
.feature-card h3 { font-size: 1.15rem; margin-bottom: 0.6rem; color: var(--dark); }
.feature-card p { color: var(--muted); font-size: 0.95rem; }
.feature-card:hover, .feature-card:focus-within { transform: translateY(-8px); box-shadow: 0 18px 40px rgba(8,15,30,0.08); }

/* 使用步骤 */
.usage { padding: 3.2rem 0 5rem; background: transparent; }
.steps-wrap { max-width: 760px; margin: 0 auto; }
.step-item { display: flex; gap: 1.2rem; margin-bottom: 1.6rem; align-items: flex-start; }
.step-num { width: 42px; height: 42px; background: linear-gradient(180deg,var(--primary),#1d4ed8); color: #fff; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-weight: 800; flex-shrink: 0; }
.step-content h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.step-content p { color: var(--muted); }
.step-content code { background: #eef2ff; padding: 0.22rem 0.48rem; border-radius: 6px; font-family: 'Consolas', monospace; font-size: 0.9rem; }

/* 联系 CTA */
.contact-cta { padding: 3.2rem 0; background: linear-gradient(180deg, rgba(68,179,211,0.05), transparent); border-top: 1px solid rgba(15,23,36,0.02); }
.cta-wrap { text-align: center; padding: 2rem; border-radius: 12px; }
.cta-wrap h2 { font-size: 1.4rem; margin-bottom: 0.6rem; }
.cta-wrap p { color: var(--muted); margin-bottom: 1rem; }

/* 页脚 */
.footer { background: linear-gradient(90deg,#0b1220,#08101a); color: #e6eef8; padding: 2.2rem 0; text-align: center; margin-top: 2rem; }
.footer p { margin-bottom: 0.8rem; font-size: 0.92rem; color: #cbd7ea; }
.footer .socials a { color: #cbd7ea; font-size: 1.25rem; margin-left: 0.6rem; }
.footer .socials a:hover { color: var(--accent); }

/* 动画 */
.fade-up { opacity: 0; transform: translateY(12px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.in-view { opacity: 1; transform: translateY(0); }

/* 动画关键帧 */
@keyframes navFadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes popIn {
    0% { opacity: 0; transform: translateY(12px) scale(.98); }
    60% { opacity: 1; transform: translateY(-6px) scale(1.02); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes floatUp {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes ripple {
    to { transform: scale(6); opacity: 0; }
}

/* 强制覆盖：确保关键元素使用主题色，优先级较高以覆盖第三方样式或内联覆盖 */
.hero-text h1 span { color: var(--primary) !important; }
.hero-ctas .btn:first-child { background: linear-gradient(90deg, var(--primary), #3aa3c1) !important; color: #fff !important; box-shadow: 0 6px 20px rgba(68,179,211,0.12) !important; }

/* 强制让 Font Awesome 的伪元素继承颜色（修复 ::before 显示不对的问题） */
.fa::before, .fas::before, .fab::before, .far::before, .fal::before { color: inherit !important; }

/* 移动菜单入场：使用动画而非瞬间出现 */
.nav-links {
    /* ...existing properties... */
}
.nav-links.show {
    display: flex; /* 已存在，但保持 */
    animation: navFadeIn 260ms ease forwards;
}

/* 切换按钮旋转效果 */
.nav-toggle.open i { transform: rotate(90deg); transition: transform 260ms ease; }

/* 卡片及 hero-img 的入场动画（结合 .in-view） */
.feature-card.in-view { animation: popIn 560ms cubic-bezier(.2,.9,.2,1) both; }
.hero-img.in-view { animation: floatUp 700ms cubic-bezier(.2,.9,.2,1) both; }

/* 按钮波纹效果准备 */
.btn { position: relative; overflow: hidden; }
.btn .ripple { position: absolute; width: 12px; height: 12px; background: rgba(255,255,255,0.38); border-radius: 50%; pointer-events: none; transform: scale(0); opacity: 1; animation: ripple 600ms ease-out; }

/* 微交互增强 */
.github-btn, .bili-btn { transition: transform 160ms cubic-bezier(.2,.9,.2,1), box-shadow 160ms; }
.github-btn:active, .bili-btn:active { transform: translateY(1px) scale(.996); }

/* 小细节：让 Font Awesome 图标过渡颜色更平滑 */
.fa, .fas, .fab, .far, .fal { transition: color 180ms ease; }

/* 响应式设计 */
@media (max-width: 1024px) {
    .container { max-width: 940px; }
    .hero-text h1 { font-size: 2.3rem; }
    .feature-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-toggle { display: inline-flex; }
    .nav-links { position: absolute; top: 72px; right: 16px; background: rgba(255,255,255,0.98); padding: 0.8rem; border-radius: 10px; box-shadow: var(--shadow); display: none; flex-direction: column; min-width: 160px; }
    .nav-links.show { display: flex; }
    .nav-links a { padding: 0.6rem 0.8rem; }

n    .hero-wrap { grid-template-columns: 1fr; text-align: center; }
    .hero-img { order: 2; }
    .hero-text { order: 1; }
    .hero-text h1 { font-size: 2rem; }
    .feature-cards { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .navbar { top: 10px; }
    .hero { margin-top: 80px; padding: 2rem 0; }
    .hero-text h1 { font-size: 1.6rem; }
    .btn { padding: 0.6rem 1rem; }
    .step-item { flex-direction: column; gap: 0.6rem; }
}

/* 无动画偏好支持：当用户选择减少动画时，禁用大量 CSS 动画和过渡 */
@media (prefers-reduced-motion: reduce) {
    :root {
        /* 可根据需要微调体验 */
    }

    * {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }

    .nav-links.show {
        animation: none !important;
    }

    .feature-card.in-view, .hero-img.in-view, .fade-up.in-view {
        opacity: 1 !important;
        transform: none !important;
    }

    /* 按钮波纹与伪元素隐藏/取消 */
    .btn .ripple { display: none !important; }

    /* 禁用导航切换旋转动画 */
    .nav-toggle.open i { transform: none !important; transition: none !important; }

    /* 减少阴影/浮动效果为静态样式 */
    .feature-card:hover, .feature-card:focus-within { transform: none !important; box-shadow: 0 8px 18px rgba(8,15,30,0.06) !important; }
    .btn:hover { transform: none !important; }
}