/* 英文站通用/内容页样式（品牌配色，配合复用的 -2 系列 header/footer） */

:root {
    --navy: #0e2a5c;
    --navy-dark: #06142e;
    --blue: #1565c0;
    --orange: #ff7a1a;
    --gold: #f5a623;
    --bg: #eef4fb;
    --text: #40516b;
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: #24324a;
    margin: 0;
    background: #fff;
}

/* Hero（深蓝渐变 + ECG 感） */
.hero {
    position: relative;
    background: linear-gradient(135deg, #06142e 0%, #0e2a5c 55%, #102a5c 100%);
    color: #fff;
    padding: 96px 24px 80px;
    text-align: center;
    overflow: hidden;
}
.hero h1 {
    font-size: 52px;
    font-weight: 800;
    letter-spacing: 1px;
    margin: 0 0 10px;
}
.hero .sub {
    font-size: 22px;
    color: #cfe0f6;
    margin: 0 0 6px;
}
.hero .lead {
    font-size: 16px;
    color: #a9c3e8;
    max-width: 760px;
    margin: 14px auto 0;
}

/* 通用容器 */
.container-en { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.section { padding: 64px 0; }
.blk-title {
    font-size: 30px;
    font-weight: 800;
    color: var(--navy);
    text-align: center;
    margin-bottom: 8px;
}
.blk-sub { text-align: center; color: #8a97ab; margin-bottom: 40px; }

/* 特性网格 */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.cell {
    background: #fff;
    border: 1px solid #e6eaf1;
    border-radius: 12px;
    padding: 28px 22px;
    text-align: center;
}
.cell .num { font-size: 40px; font-weight: 800; color: var(--orange); }
.cell .lbl { font-size: 13px; color: var(--text); margin-top: 6px; letter-spacing: .5px; }

/* 卡片/图文 */
.panel {
    background: var(--bg);
    border-radius: 14px;
    padding: 40px;
    margin-top: 24px;
}
.panel h2 { color: var(--navy); font-size: 24px; margin: 0 0 16px; }
.panel p { color: #40516b; line-height: 1.8; font-size: 15px; }

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 26px;
    background: var(--orange);
    color: #fff;
    border-radius: 30px;
    font-weight: 700;
    letter-spacing: .5px;
    border: none;
    text-decoration: none;
    cursor: pointer;
}
.btn:hover { background: #e66a0d; color: #fff; }
.btn.ghost { background: transparent; border: 1px solid #cbd5e1; color: var(--navy); }

/* 新闻列表 */
.news-list a { text-decoration: none; color: inherit; display: block; }
.news-item {
    display: flex;
    gap: 20px;
    background: #fff;
    border: 1px solid #e6eaf1;
    border-radius: 12px;
    padding: 18px;
    margin-bottom: 16px;
    align-items: center;
}
.news-item img { width: 220px; height: 140px; object-fit: cover; border-radius: 8px; }
.news-item .t { font-size: 17px; font-weight: 700; color: var(--navy); }
.news-item .d { color: #9aa7b8; font-size: 13px; margin-top: 6px; }

/* 表格 */
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th, table.data td { border: 1px solid #dbe4f0; padding: 10px 12px; text-align: center; }
table.data th { background: var(--navy); color: #fff; font-weight: 600; }
table.data tr:nth-child(even) td { background: #f6f9fd; }

/* 表单 */
.form label { display: block; font-size: 13px; color: var(--text); margin: 14px 0 5px; }
.form label .req { color: #e74c3c; }
.form input, .form textarea, .form select {
    width: 100%; padding: 11px 13px; border: 1px solid #cbd5e1; border-radius: 8px; font-size: 15px; font-family: inherit;
}
.form .row { display: flex; gap: 16px; }
.form .row > div { flex: 1; }

/* 联系三列 */
.contact-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.contact-cols .col { background: #fff; border: 1px solid #e6eaf1; border-radius: 12px; padding: 26px; text-align: center; }
.contact-cols .col .k { font-size: 13px; color: #8a97ab; letter-spacing: 1px; }
.contact-cols .col .v { font-size: 15px; color: var(--navy); margin-top: 10px; line-height: 1.6; }

/* 图片自适应 */
.img-fluid { max-width: 100%; height: auto; }
.text-center { text-align: center; }
.mt-2 { margin-top: 16px; }
.mt-4 { margin-top: 32px; }
.muted { color: #9aa7b8; font-size: 13px; }

/* ---- 首页 hero 背景图（复用中文站 home.jpg，加遮罩淡化中文占位文案） ---- */
.hero-home {
    background: linear-gradient(135deg, rgba(6,20,46,.88), rgba(14,42,92,.76) 55%, rgba(16,42,92,.80)), url('../../images/home.jpg') center/cover no-repeat;
}

/* ---- 首页特性区产品图分栏 ---- */
.feature-split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: center; }
.feature-text .grid-4, .feature-text .grid-3 { grid-template-columns: repeat(2, 1fr); }
.feature-img { text-align: center; }
.feature-img img { max-width: 100%; height: auto; }

/* ---- 下载页浅色 hero ---- */
.hero-light {
    background: linear-gradient(120deg, #eef6ff 0%, #f8fcff 45%, #e3f0fc 100%);
    color: var(--navy);
    text-align: left;
    padding: 72px 24px;
}
.hero-light-body { max-width: 1180px; margin: 0 auto; }
.hero-light h1 { color: var(--navy); font-size: 44px; line-height: 1.1; }

/* ---- 下载页资源分栏 + 简洁列表 ---- */
.resource-split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.resource-img { text-align: center; }
.resource-img img { max-width: 100%; height: auto; }
.resource-item { display: flex; align-items: center; justify-content: space-between; padding: 16px 4px; border-bottom: 1px dashed #c9d6e8; }
.resource-name { color: var(--navy); font-size: 16px; font-weight: 700; line-height: 1.4; }
.resource-meta { color: #8696ac; font-size: 13px; margin-top: 6px; }
.resource-dl { flex: 0 0 auto; margin-left: 20px; }
.resource-dl img { width: 28px; height: 28px; }

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .news-item { flex-direction: column; }
    .news-item img { width: 100%; height: auto; }
    .form .row { flex-direction: column; }
    .contact-cols { grid-template-columns: 1fr; }
    .hero h1 { font-size: 36px; }
    .feature-split { grid-template-columns: 1fr; }
    .hero-light { text-align: center; }
    .hero-light h1 { font-size: 32px; }
    .resource-split { grid-template-columns: 1fr; }
}