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<!DOCTYPE html>
<html class="light" lang="zh-CN"><head>
<meta charset="utf-8"/>
<meta content="width=device-width, initial-scale=1.0" name="viewport"/>
<title>知习 AI - 更懂你,更会学</title>
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</head>
<body class="bg-[#F6F8FC] text-on-surface font-body-base antialiased relative min-h-screen selection:bg-primary-container selection:text-on-primary-container dot-grid">
<!-- TopNavBar -->
<nav class="fixed top-0 w-full z-50 border-b border-white/20 bg-white/70 dark:bg-slate-900/70 backdrop-blur-xl shadow-[0px_20px_40px_rgba(18,26,43,0.04)]">
<div class="flex justify-between items-center max-w-7xl mx-auto px-8 h-20">
<div class="text-xl font-bold tracking-tighter text-slate-900 dark:text-white flex items-center gap-2">
<span class="material-symbols-outlined text-primary" style="font-variation-settings: 'FILL' 1;">auto_awesome</span>
知习 AI
</div>
<div class="hidden md:flex items-center gap-8 font-['Manrope'] text-sm tracking-tight font-medium">
<a class="text-blue-600 dark:text-blue-400 font-semibold hover:text-blue-600 dark:hover:text-blue-400 transition-colors duration-300 scale-95 active:scale-90 transition-transform" href="#">产品</a>
<a class="text-slate-600 dark:text-slate-400 hover:text-blue-600 dark:hover:text-blue-400 transition-colors duration-300 scale-95 active:scale-90 transition-transform" href="#">功能</a>
<a class="text-slate-600 dark:text-slate-400 hover:text-blue-600 dark:hover:text-blue-400 transition-colors duration-300 scale-95 active:scale-90 transition-transform" href="#">理念</a>
<a class="text-slate-600 dark:text-slate-400 hover:text-blue-600 dark:hover:text-blue-400 transition-colors duration-300 scale-95 active:scale-90 transition-transform" href="#">等待名单</a>
</div>
<div class="flex items-center">
<button class="bg-gradient-primary text-on-primary font-label-sm text-label-sm px-6 py-2.5 rounded-full hover:shadow-lg transition-all duration-300 hover:-translate-y-0.5">
加入等待名单
</button>
</div>
</div>
</nav>
<!-- Hero Section -->
<header class="pt-40 pb-section-padding px-gutter relative overflow-hidden">
<div class="max-w-container-max mx-auto text-center relative z-10">
<h1 class="font-display-xl text-display-xl text-on-surface mb-6 max-w-4xl mx-auto leading-tight">
更懂你,<span class="text-gradient">更会学</span>
</h1>
<p class="font-body-lg text-body-lg text-on-surface-variant max-w-2xl mx-auto mb-10 leading-relaxed">
AI 驱动的系统化学习助手把知识库、主动回忆、AI 分析和复习计划结合起来,帮你从"看过"变成"真正学会"。
</p>
<div class="flex flex-col sm:flex-row items-center justify-center gap-4 mb-20">
<button class="w-full sm:w-auto bg-gradient-primary text-on-primary font-label-sm text-label-sm px-8 py-4 rounded-full hover:shadow-xl transition-all duration-300 hover:-translate-y-1">
加入等待名单
</button>
<button class="w-full sm:w-auto bg-white/50 backdrop-blur-md text-on-surface font-label-sm text-label-sm px-8 py-4 rounded-full border border-outline-variant hover:bg-white/80 transition-all duration-300">
了解产品理念
</button>
</div>
<div class="relative max-w-5xl mx-auto">
<div class="absolute inset-0 bg-primary/10 blur-[100px] rounded-full"></div>
<div class="relative glass-card rounded-[2rem] p-4 mx-auto overflow-hidden border border-white/60 shadow-2xl">
<img alt="Product Interface Mockup" class="w-full h-auto rounded-xl shadow-sm object-cover max-h-[600px]" data-alt="A clean, highly realistic 3D mockup of a modern iOS application interface floating over a serene, light blue background. The app features layered glassmorphism cards showing learning tasks and AI feedback. The design is Apple-inspired, minimalist, with soft shadows and glowing accents in primary blue and purple. The overall mood is calm, focused, and intellectually rigorous." src="https://lh3.googleusercontent.com/aida-public/AB6AXuABIO0hqNMx47nzGMCqnM20f-oy378eGOwyO-sbkL1uPU_mUzuMkDEg6TdI_iMb_JQ57EF53skumy8ss29x8QXVx5TzCU-3_t2SIBN_5FyQQbA6H_7W26jP4NVZ5ro3VY4C-i4CfiaxEsjRgIoYsT7pAVwJB9FWNAEZV2nrtYiIlhNGobVsxQIxLK1cHC90tJ2M9O7fP5jaPHnY9gv9WRKGYtzXKZn-PAzxI34O5xZcrd9t4PB2qXfxJva3ouyeBpb_lmanIT6TNXu6"/>
<!-- Floating UI Elements -->
<div class="absolute top-10 -left-8 glass-card p-4 rounded-2xl shadow-xl hidden md:flex items-center gap-3 animate-[bounce_5s_infinite]">
<div class="w-10 h-10 rounded-full bg-primary-container text-on-primary-container flex items-center justify-center">
<span class="material-symbols-outlined">calendar_today</span>
</div>
<div class="text-left">
<div class="font-label-sm text-label-sm text-on-surface">今日学习任务</div>
<div class="text-xs text-on-surface-variant">3 个待复习</div>
</div>
</div>
<div class="absolute bottom-20 -right-8 glass-card p-4 rounded-2xl shadow-xl hidden md:flex items-center gap-3 animate-[bounce_6s_infinite_reverse]">
<div class="w-10 h-10 rounded-full bg-secondary-container text-on-secondary-container flex items-center justify-center">
<span class="material-symbols-outlined">analytics</span>
</div>
<div class="text-left">
<div class="font-label-sm text-label-sm text-on-surface">AI 分析反馈</div>
<div class="text-xs text-on-surface-variant">掌握度提升 15%</div>
</div>
</div>
</div>
</div>
</div>
</header>
<!-- Pain Points -->
<section class="py-section-padding px-gutter bg-surface-container-low">
<div class="max-w-container-max mx-auto">
<div class="text-center mb-16">
<h2 class="font-headline-lg text-headline-lg text-on-surface mb-4">很多学习,其实只是<span class="text-gradient">"看过"</span></h2>
<p class="font-body-base text-body-base text-on-surface-variant">传统学习方式面临的挑战</p>
</div>
<div class="grid grid-cols-1 md:grid-cols-2 gap-8">
<div class="glass-card rounded-2xl p-card-padding hover:-translate-y-1 transition-transform duration-300">
<div class="w-12 h-12 rounded-xl bg-error-container text-on-error-container flex items-center justify-center mb-6">
<span class="material-symbols-outlined">library_books</span>
</div>
<h3 class="font-headline-md text-headline-md text-on-surface mb-3">资料很多,但不知道先学什么</h3>
<p class="font-body-base text-body-base text-on-surface-variant">信息过载导致无从下手,缺乏系统性的指引。</p>
</div>
<div class="glass-card rounded-2xl p-card-padding hover:-translate-y-1 transition-transform duration-300">
<div class="w-12 h-12 rounded-xl bg-surface-variant text-on-surface-variant flex items-center justify-center mb-6">
<span class="material-symbols-outlined">edit_note</span>
</div>
<h3 class="font-headline-md text-headline-md text-on-surface mb-3">笔记写了,却很少真正复习</h3>
<p class="font-body-base text-body-base text-on-surface-variant">收藏即学习的错觉,遗忘曲线无人对抗。</p>
</div>
<div class="glass-card rounded-2xl p-card-padding hover:-translate-y-1 transition-transform duration-300">
<div class="w-12 h-12 rounded-xl bg-primary-container text-on-primary-container flex items-center justify-center mb-6">
<span class="material-symbols-outlined">record_voice_over</span>
</div>
<h3 class="font-headline-md text-headline-md text-on-surface mb-3">看懂了内容,却说不出来</h3>
<p class="font-body-base text-body-base text-on-surface-variant">缺乏输出环节,知识停留在浅层认知。</p>
</div>
<div class="glass-card rounded-2xl p-card-padding hover:-translate-y-1 transition-transform duration-300">
<div class="w-12 h-12 rounded-xl bg-secondary-container text-on-secondary-container flex items-center justify-center mb-6">
<span class="material-symbols-outlined">feedback</span>
</div>
<h3 class="font-headline-md text-headline-md text-on-surface mb-3">没有及时反馈,不知道自己哪里薄弱</h3>
<p class="font-body-base text-body-base text-on-surface-variant">盲目学习,无法进行针对性的强化训练。</p>
</div>
</div>
</div>
</section>
<!-- Footer -->
<footer class="w-full py-20 border-t border-slate-200 dark:border-slate-800 bg-[#F6F8FC] dark:bg-slate-950">
<div class="max-w-7xl mx-auto px-8 grid grid-cols-1 md:grid-cols-2 items-center gap-8">
<div>
<div class="text-lg font-bold text-slate-900 dark:text-white mb-2 flex items-center gap-2">
<span class="material-symbols-outlined text-primary" style="font-variation-settings: 'FILL' 1;">auto_awesome</span>
知习 AI
</div>
<div class="font-['Manrope'] text-sm text-slate-500 dark:text-slate-400">
© 2024 Longde Technology. Intellectual Serenity for Lifelong Learners.
</div>
</div>
<div class="flex flex-wrap gap-6 md:justify-end font-['Manrope'] text-sm">
<a class="text-slate-500 dark:text-slate-400 hover:text-blue-600 dark:hover:text-blue-400 underline-offset-4 hover:underline transition-colors" href="#">隐私政策</a>
<a class="text-slate-500 dark:text-slate-400 hover:text-blue-600 dark:hover:text-blue-400 underline-offset-4 hover:underline transition-colors" href="#">服务条款</a>
<a class="text-slate-500 dark:text-slate-400 hover:text-blue-600 dark:hover:text-blue-400 underline-offset-4 hover:underline transition-colors" href="#">关于我们</a>
<a class="text-slate-500 dark:text-slate-400 hover:text-blue-600 dark:hover:text-blue-400 underline-offset-4 hover:underline transition-colors" href="#">联系支持</a>
</div>
</div>
</footer>
</body></html>