/* ===== 易歪歪官网（复刻参考站 Bootstrap 老式下载站模板 · 深色hero+蓝色按钮+功能格子）===== */
:root {
    --primary: #366bb3;
    --primary-dark: #0047a6;
    --primary-light: #4d6faf;
    --nav-border: #587ab9;
    --hero-bg: #2b333a;
    --sky: #12c0ff;
    --red: #df0000;
    --orange: #ff5558;
    --bg: #F7F7F7;
    --card-border: #DAE2EC;
    --card-border-hover: #ADBED4;
    --title: #131313;
    --muted: #8492a2;
    --footer-bg: #2b333b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    background: var(--bg);
    color: var(--title);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, h4, h5 { color: var(--title); line-height: 1.3; }

/* ===== 导航栏（白底 + 底部蓝色粗边框）===== */
.navbar {
    background: #fff;
    border-bottom: 5px solid var(--nav-border);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: sticky; top: 0; z-index: 1000;
}
.navbar .container { max-width: 1140px; margin: 0 auto; padding: 10px 20px; display: flex; align-items: center; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-size: 20px; }
.brand img.logo-full { width: auto; height: 40px; border-radius: 0; }
.brand strong { color: var(--primary-light); }
.nav-links { display: flex; gap: 20px; list-style: none; margin-left: 20px; }
.nav-links a { color: #333; font-size: 15px; padding: 6px 8px; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-contact { margin-left: auto; }
.btn-green { background: #28a745; color: #fff; border: 0; padding: 8px 16px; border-radius: 4px; font-size: 14px; cursor: pointer; }
.btn-green:hover { background: #218838; }
.nav-toggle { display: none; background: none; border: 1px solid #ddd; border-radius: 4px; padding: 6px 10px; font-size: 1.3rem; cursor: pointer; }

/* ===== Hero（深色 jumbotron）===== */
.hero {
    background: var(--hero-bg);
    overflow: hidden;
    padding: 60px 0 40px;
    text-align: center;
}
.hero .container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.hero h1 {
    color: #fff;
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    margin-bottom: 14px;
}
.hero h1 .brand-name { color: var(--sky); }
.hero .badge-free {
    display: inline-block;
    background: var(--red);
    color: #fff;
    font-size: 14px;
    padding: 4px 12px;
    border-radius: 4px;
    margin-left: 10px;
    vertical-align: middle;
}
.hero .lead { color: #fff; font-size: 18px; margin-bottom: 8px; }
.hero .lead .hot { color: var(--orange); font-weight: 700; }

/* 下载按钮区 */
.download-buttons {
    display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
    margin: 26px 0 16px;
}
.btn-download {
    display: flex; align-items: center; gap: 10px;
    width: 150px; height: 50px;
    background: var(--primary);
    border: 1px solid #3f60a1;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-download:hover { background: var(--primary-dark); }
.btn-download .ico {
    width: 50px; height: 100%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 24px; font-weight: 700;
}
.btn-download .val { color: #fff; font-size: 18px; font-weight: 700; }

.hero-arrow { margin-top: 10px; }
.chevron {
    display: inline-block; width: 24px; height: 24px;
    border-right: 3px solid #8492a2; border-bottom: 3px solid #8492a2;
    transform: rotate(45deg);
    margin: 0 4px;
    animation: bounce 1.5s infinite;
}
@keyframes bounce {
    0%, 100% { transform: rotate(45deg) translate(0,0); }
    50% { transform: rotate(45deg) translate(4px,4px); }
}

/* ===== 三列特性 ===== */
.features3 { max-width: 1140px; margin: 40px auto; padding: 0 20px; }
.features3 .row { display: flex; flex-wrap: wrap; gap: 20px; text-align: center; }
.features3 .col { flex: 1; min-width: 240px; padding: 20px; }
.features3 .col img { margin: 0 auto 14px; width: 90px; height: 90px; }
.features3 h2 { font-size: 22px; margin-bottom: 8px; }
.features3 p { font-size: 14px; color: #555; }
.features3 hr { border: 0; border-top: 1px solid #e0e0e0; margin-top: 20px; }

/* ===== 版本预览 ===== */
.preview { max-width: 1140px; margin: 0 auto 40px; padding: 0 20px; text-align: center; }
.preview h5 { font-size: 18px; color: var(--title); margin-bottom: 12px; }
.preview img { border-top: 3px solid var(--primary); margin: 0 auto; border-radius: 0 0 8px 8px; }

/* ===== 功能格子矩阵（g-card 150x150）===== */
.feature-grid { max-width: 1140px; margin: 40px auto; padding: 0 20px; }
.feature-grid h2 { font-size: 26px; margin-bottom: 20px; }
.g-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.g-card {
    min-width: 150px; height: 150px; margin: 5px;
    border: 1px solid var(--card-border);
    border-radius: 15px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 8px; font-size: 15px; color: #333;
    background: #fff;
    transition: border 0.2s;
}
.g-card:hover { border: 1px solid var(--card-border-hover); }
.g-card .ico { font-size: 40px; line-height: 1; }

/* ===== 内容页（下载/订阅/FAQ 内页 hero）===== */
.inner-hero {
    background: var(--hero-bg);
    padding: 60px 0;
    text-align: center;
}
.inner-hero h1 { color: #fff; font-size: clamp(30px, 4.5vw, 44px); }
.inner-hero h1 .hl { color: var(--sky); }
.inner-hero h1 .brand-name { color: var(--sky); }
.inner-hero p { color: #ccc; font-size: 17px; margin-top: 10px; }
.inner-hero .download-buttons { margin-top: 24px; }

/* 内容区 */
.content { max-width: 1140px; margin: 40px auto; padding: 0 20px; }
.article { max-width: 900px; margin: 0 auto; }
.article h1 { font-size: 30px; margin-bottom: 12px; }
.article .meta { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.article h2 { font-size: 22px; margin: 32px 0 12px; }
.article p { margin-bottom: 16px; font-size: 16px; color: #333; }
.article img { border-radius: 8px; margin: 16px 0; }
.article strong { color: var(--title); }
.article ul, .article ol { margin: 0 0 16px 22px; }
.article li { margin-bottom: 8px; }
.callout { background: #eef4ff; border-left: 4px solid var(--primary); padding: 14px 18px; border-radius: 6px; margin: 16px 0; }

/* 下载矩阵 */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.dl-card { background: #fff; border: 1px solid var(--card-border); border-radius: 15px; padding: 26px; text-align: center; }
.dl-card:hover { border-color: var(--card-border-hover); }
.dl-card img { width: 80px; height: 80px; margin: 0 auto 14px; border-radius: 18px; }
.dl-card h3 { margin-bottom: 8px; font-size: 18px; }
.dl-card p { color: #666; font-size: 14px; margin-bottom: 16px; }
.btn { display: inline-block; padding: 10px 22px; border-radius: 5px; font-weight: 700; cursor: pointer; text-align: center; }
.btn-primary { background: var(--primary); color: #fff; border: 1px solid #3f60a1; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-ghost:hover { background: #eef4ff; }

/* 套餐 */
.pricing { max-width: 860px; margin: 0 auto; }
.pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.plan { background: #fff; border: 1px solid var(--card-border); border-radius: 15px; padding: 30px; position: relative; }
.plan.featured { border: 2px solid var(--primary); }
.plan .tag { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--red); color: #fff; font-size: 13px; padding: 3px 14px; border-radius: 20px; }
.plan h3 { font-size: 20px; margin-bottom: 6px; }
.plan .price { font-size: 40px; font-weight: 800; color: var(--title); }
.plan .price small { font-size: 16px; color: var(--muted); font-weight: 500; }
.plan ul { list-style: none; margin: 18px 0 22px; }
.plan li { padding: 6px 0; font-size: 15px; }
.plan li::before { content: "✓"; color: var(--primary); font-weight: 700; margin-right: 8px; }
.plan li.no::before { content: "✗"; color: var(--muted); }

/* FAQ */
.faq-list { max-width: 900px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 30px 50px; }
.faq-item h3 { font-size: 19px; margin-bottom: 8px; }
.faq-item p { color: #555; }

/* ===== 页脚（Bootstrap 多列）===== */
.footer { max-width: 1140px; margin: 40px auto 0; padding: 40px 20px 20px; border-top: 1px solid #e0e0e0; }
.footer-grid { display: flex; flex-wrap: wrap; gap: 30px; margin-bottom: 24px; }
.footer-brand { flex: 1; min-width: 200px; }
.footer-brand img.logo-full { width: auto; height: 34px; border-radius: 0; margin-bottom: 8px; }
.footer-brand small { color: var(--muted); }
.footer-col { flex: 1; min-width: 140px; }
.footer-col h5 { font-size: 16px; margin-bottom: 12px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: var(--muted); font-size: 14px; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
    background: var(--footer-bg);
    border-radius: 8px;
    color: #848993;
    padding: 10px;
    text-align: center;
    font-size: 12px;
    margin-bottom: 12px;
}
.footer-disclaimer { text-align: center; font-size: 13px; color: #2B333B; }

/* 404 */
.error { text-align: center; padding: 100px 20px; }
.error h1 { font-size: 80px; color: var(--primary); }
.error p { font-size: 18px; color: #555; margin: 16px 0 24px; }

/* 响应式 */
@media (max-width: 900px) {
    .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px; gap: 12px; box-shadow: 0 4px 8px rgba(0,0,0,0.1); }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .navbar .container { position: relative; }
    .dl-grid, .pricing-grid, .faq-list { grid-template-columns: 1fr; }
    .features3 .row { flex-direction: column; }
}
@media (max-width: 560px) {
    .hero h1 { font-size: 30px; }
    .btn-download { width: 130px; }
    .g-card { min-width: 120px; height: 120px; }
}