/* 年轻潮流风 - Neo-Brutalism (新粗野主义) 设计 */
:root {
    --bg-main: #FFF4EA;
    --color-black: #111111;
    --color-yellow: #FFD919;
    --color-pink: #FF477E;
    --color-cyan: #00F5D4;
    --color-green: #1DD1A1;
    --color-purple: #9D4EDD;
    --color-white: #FFFFFF;
    --border-thick: 4px solid #111111;
    --shadow-hard: 8px 8px 0px #111111;
    --shadow-hard-hover: 12px 12px 0px #111111;
    --radius-round: 20px;
    --radius-box: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif; background-color: var(--bg-main); color: var(--color-black); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; border-radius: var(--radius-box); }

/* 导航 */
.header { background: var(--color-white); border-bottom: var(--border-thick); position: sticky; top: 0; z-index: 1000; }
.nav-wrap { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; height: 80px; padding: 0 20px; }
.logo { font-size: 26px; font-weight: 900; text-transform: uppercase; display: flex; align-items: center; gap: 10px; }
.logo img { width: 36px; height: 36px; border-radius: 8px; border: 2px solid var(--color-black); }
.nav-links { display: flex; gap: 20px; }
.nav-links a { font-weight: 800; font-size: 16px; padding: 8px 16px; border-radius: 8px; border: 2px solid transparent; transition: 0.2s; }
.nav-links a:hover, .nav-links a.active { background: var(--color-yellow); border: 2px solid var(--color-black); box-shadow: 4px 4px 0px var(--color-black); transform: translate(-2px, -2px); }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 16px 36px; font-size: 20px; font-weight: 900; border: var(--border-thick); border-radius: var(--radius-round); cursor: pointer; transition: 0.2s ease-in-out; box-shadow: var(--shadow-hard); text-transform: uppercase; color: var(--color-black); }
.btn-primary { background: var(--color-cyan); }
.btn-outline { background: var(--color-pink); color: var(--color-white); }
.btn:hover { transform: translate(-4px, -4px); box-shadow: var(--shadow-hard-hover); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0px 0px 0px var(--color-black); }

/* 通用容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 100px 20px; }
.sec-title { text-align: center; font-size: 48px; font-weight: 900; margin-bottom: 20px; text-transform: uppercase; text-shadow: 4px 4px 0px var(--color-yellow); }
.sec-subtitle { text-align: center; font-size: 20px; font-weight: 700; margin-bottom: 60px; background: var(--color-black); color: var(--color-white); display: inline-block; padding: 8px 24px; border-radius: 20px; transform: rotate(-2deg); margin-left: 50%; transform: translateX(-50%) rotate(-2deg); }

/* Hero */
.hero { text-align: center; padding: 80px 20px 60px; background-image: radial-gradient(var(--color-yellow) 2px, transparent 2px); background-size: 30px 30px; border-bottom: var(--border-thick); }
.hero-badge { display: inline-block; background: var(--color-pink); color: var(--color-white); font-weight: 900; padding: 8px 24px; border-radius: 20px; border: 2px solid var(--color-black); box-shadow: 4px 4px 0px var(--color-black); margin-bottom: 30px; font-size: 18px; transform: rotate(2deg); }
.hero h1 { font-size: 70px; font-weight: 900; margin-bottom: 20px; text-shadow: 6px 6px 0px var(--color-white), 8px 8px 0px var(--color-black); line-height: 1.1; }
.hero .subtitle { font-size: 26px; font-weight: 800; margin-bottom: 40px; background: var(--color-cyan); display: inline-block; padding: 5px 15px; border: 2px solid var(--color-black); }
.hero-btns { display: flex; justify-content: center; gap: 30px; margin-bottom: 60px; }
.hero-visual { max-width: 1000px; margin: 0 auto; border: var(--border-thick); border-radius: var(--radius-box); box-shadow: var(--shadow-hard); background: var(--color-white); padding: 10px; }
.hero-visual img { border: 2px solid var(--color-black); }

/* 核心卖点 */
.feature-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.f-box { background: var(--color-white); border: var(--border-thick); border-radius: var(--radius-box); padding: 30px 15px; text-align: center; box-shadow: var(--shadow-hard); transition: 0.2s; }
.f-box:hover { transform: translate(-4px, -4px); box-shadow: var(--shadow-hard-hover); }
.f-box:nth-child(1) { background: var(--color-yellow); }
.f-box:nth-child(2) { background: var(--color-cyan); }
.f-box:nth-child(3) { background: var(--color-pink); color: #FFF; }
.f-box:nth-child(4) { background: var(--color-green); }
.f-box:nth-child(5) { background: var(--color-purple); color: #FFF; }
.f-box img { width: 60px; height: 60px; margin: 0 auto 15px; background: rgba(255,255,255,0.8); border-radius: 50%; padding: 10px; border: 2px solid var(--color-black); }
.f-box h3 { font-size: 20px; font-weight: 900; margin-bottom: 10px; }
.f-box p { font-size: 14px; font-weight: 700; opacity: 0.9; }

/* 功能详情 */
.detail-item { display: flex; align-items: center; gap: 60px; margin-bottom: 80px; background: var(--color-white); border: var(--border-thick); border-radius: var(--radius-box); padding: 40px; box-shadow: var(--shadow-hard); }
.detail-item:nth-child(even) { flex-direction: row-reverse; background: #EFFFFD; }
.d-text { flex: 1; }
.d-text h3 { font-size: 36px; font-weight: 900; margin-bottom: 20px; text-shadow: 2px 2px 0px var(--color-cyan); }
.d-text p { font-size: 18px; font-weight: 600; margin-bottom: 30px; line-height: 1.8; }
.d-data { display: inline-block; font-size: 24px; font-weight: 900; background: var(--color-yellow); padding: 10px 20px; border: 2px solid var(--color-black); border-radius: 12px; box-shadow: 4px 4px 0px var(--color-black); transform: rotate(-1deg); }
.d-visual { flex: 1.2; }
.d-visual img { border: var(--border-thick); box-shadow: 8px 8px 0px rgba(0,0,0,0.1); }

/* 浏览器对比 */
.compare-wrap { background: var(--color-white); border: var(--border-thick); border-radius: var(--radius-box); box-shadow: var(--shadow-hard); overflow: hidden; margin-top: 40px; }
.compare-table { width: 100%; border-collapse: collapse; text-align: center; }
.compare-table th, .compare-table td { padding: 20px; border-bottom: 2px solid var(--color-black); border-right: 2px solid var(--color-black); }
.compare-table th { background: var(--color-purple); color: #FFF; font-size: 18px; font-weight: 900; }
.compare-table th:last-child, .compare-table td:last-child { border-right: none; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table td { font-weight: 600; font-size: 16px; }
.compare-table td.hl { background: var(--color-yellow); font-weight: 900; font-size: 18px; }

/* 数据背书 */
.data-panel { background: var(--color-green); border-top: var(--border-thick); border-bottom: var(--border-thick); padding: 80px 0; margin: 60px 0; }
.data-inner { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-around; text-align: center; }
.data-item { background: var(--color-white); border: var(--border-thick); border-radius: var(--radius-box); padding: 30px 40px; box-shadow: var(--shadow-hard); transform: rotate(1deg); }
.data-item:nth-child(even) { transform: rotate(-2deg); background: var(--color-cyan); }
.data-item h4 { font-size: 48px; font-weight: 900; margin-bottom: 10px; }
.data-item p { font-size: 18px; font-weight: 800; text-transform: uppercase; }

/* 下载卡片 */
.dl-wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.dl-card { background: var(--color-white); border: var(--border-thick); border-radius: var(--radius-box); padding: 40px 30px; text-align: center; box-shadow: var(--shadow-hard); transition: 0.2s; }
.dl-card:hover { transform: translate(-4px, -4px); box-shadow: var(--shadow-hard-hover); }
.dl-card.pro { background: var(--color-cyan); }
.dl-card h3 { font-size: 28px; font-weight: 900; margin-bottom: 15px; }
.dl-card p { font-size: 16px; font-weight: 600; margin-bottom: 30px; height: 50px; }
.dl-card .btn { width: 100%; font-size: 18px; padding: 14px; }

/* FAQ */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.faq-box { background: var(--color-white); border: var(--border-thick); border-radius: var(--radius-box); padding: 30px; box-shadow: 4px 4px 0px var(--color-black); }
.faq-box h4 { font-size: 20px; font-weight: 900; margin-bottom: 15px; display: flex; gap: 10px; }
.faq-box h4::before { content: "Q."; color: var(--color-pink); font-size: 24px; }
.faq-box p { font-size: 16px; font-weight: 600; line-height: 1.6; }

/* Footer */
.footer { background: var(--color-black); color: var(--color-white); text-align: center; padding: 60px 20px; border-top: var(--border-thick); font-weight: 700; }