/* ============================================================
   JMC漫画 · 官网样式
   风格：暖橙 / 产品官网
   ============================================================ */

:root {
    --bg: #FFF7ED;
    --line: #FED7AA;
    --text: #431407;
    --text-soft: #57534E;
    --text-faint: #A8A29E;
    --accent: #EA580C;
    --accent-bright: #F97316;
    --accent-deep: #C2410C;
    --gradient: linear-gradient(135deg, #EA580C 0%, #F97316 100%);
    --radius: 14px;
    --shadow: 0 4px 20px rgba(234, 88, 12, 0.12);
    --shadow-lg: 0 24px 60px rgba(234, 88, 12, 0.25);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    padding-bottom: 70px;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ============ 导航 ============ */
.navbar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { height: 38px; width: 38px; border-radius: 10px; object-fit: cover; }
.brand-name { font-size: 18px; font-weight: 700; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: 14px; color: var(--text-soft); transition: color .2s; }
.nav-links a:hover { color: var(--accent-deep); }

/* ============ 按钮 ============ */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 26px; border-radius: 10px;
    font-size: 14px; font-weight: 600; transition: all .25s;
}
.btn-small { padding: 8px 18px; font-size: 13px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 4px 14px rgba(234,88,12,0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(234,88,12,0.45); }

/* ============ Hero ============ */
.hero {
    padding: 70px 0;
    background:
        radial-gradient(circle at 85% 15%, rgba(249,115,22,0.12), transparent 50%),
        var(--bg);
}
.hero-inner {
    display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 50px; align-items: center;
}
.hero-tag {
    display: inline-block; padding: 6px 16px;
    background: rgba(234,88,12,0.1); color: var(--accent-deep);
    border-radius: 20px; font-size: 13px; font-weight: 500; margin-bottom: 22px;
}
.hero-text h1 { font-size: 44px; font-weight: 800; line-height: 1.25; margin-bottom: 20px; }
.hero-desc { font-size: 16px; color: var(--text-soft); line-height: 1.9; margin-bottom: 32px; max-width: 480px; }
.hero-actions { margin-bottom: 28px; }
.hero-badges { display: flex; gap: 12px; flex-wrap: wrap; }
.badge {
    padding: 6px 16px; background: #fff; color: var(--accent-deep);
    border-radius: 20px; font-size: 13px; font-weight: 500;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.hero-art { display: flex; justify-content: center; }
.hero-img {
    max-width: 260px; border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

/* ============ Section ============ */
section { padding: 70px 0; }
.section-title { font-size: 30px; font-weight: 800; text-align: center; margin-bottom: 44px; }

/* ============ 功能特色 ============ */
.features { background: #fff; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card {
    padding: 30px 24px; background: var(--bg); border-radius: var(--radius);
    transition: all .3s; border: 1px solid transparent; text-align: center;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--accent-bright); box-shadow: var(--shadow); }
.feature-icon { font-size: 36px; margin-bottom: 14px; }
.feature-card h3 { font-size: 17px; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-soft); line-height: 1.8; }

/* ============ 截图展示 ============ */
.showcase-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.show-card { text-align: center; }
.show-card img {
    width: 100%; max-width: 200px; margin: 0 auto 14px;
    border-radius: 14px; box-shadow: var(--shadow); transition: transform .3s;
}
.show-card:hover img { transform: translateY(-6px); }
.show-label {
    display: inline-block; padding: 6px 16px; background: #fff; border-radius: 20px;
    font-size: 13px; font-weight: 600; color: var(--accent-deep);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* ============ FAQ ============ */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-list details {
    border: 1px solid var(--line); border-radius: 12px;
    padding: 18px 24px; margin-bottom: 10px; background: #fff;
}
.faq-list details[open] { border-color: var(--accent-bright); }
.faq-list summary {
    font-size: 15px; font-weight: 600; cursor: pointer;
    list-style: none; position: relative; padding-right: 28px;
}
.faq-list summary::after {
    content: "+"; position: absolute; right: 0; top: 50%;
    transform: translateY(-50%); font-size: 20px; color: var(--accent);
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { font-size: 14px; color: var(--text-soft); padding-top: 10px; }

/* ============ 页脚 ============ */
.footer {
    background: #431407; color: rgba(255,255,255,0.5); padding: 32px 0;
}
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.footer-logo { height: 36px; width: 36px; border-radius: 8px; object-fit: cover; }
.footer-copy { font-size: 13px; }

/* ============ 底部悬浮下载栏 ============ */
.sticky-bar {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 99;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(12px);
    border-top: 1px solid var(--line); padding: 10px 0;
}
.sticky-inner { display: flex; align-items: center; gap: 12px; }
.sticky-logo { height: 36px; width: 36px; border-radius: 8px; object-fit: cover; }
.sticky-text { flex: 1; display: flex; flex-direction: column; }
.sticky-text strong { font-size: 14px; }
.sticky-text span { font-size: 12px; color: var(--text-soft); }

/* ============ 滚动渐入 ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s, transform .7s; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
    .nav-links { display: none; }
    .hero-inner { grid-template-columns: 1fr; gap: 36px; }
    .hero-text h1 { font-size: 32px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .showcase-row { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { flex-direction: column; text-align: center; }
}