/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: #404040;
    background: #ffffff;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
ul, ol { list-style: none; }
button { border: none; background: transparent; cursor: pointer; font: inherit; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 变量：科技蓝 + 管家婆橙 ===== */
:root {
    --brand: #0070f0;
    --brand-2: #286fdb;
    --brand-light: #e0edf9;
    --orange: #FF8311;
    --orange-2: #FD6500;
    --orange-light: #fff8ea;
    --text: #404040;
    --text-dark: #1a1a1a;
    --text-muted: #7a828e;
    --bg-alt: #f5f8fc;
    --border: #e6ecf5;
}

/* ===== 顶部信息条 ===== */
.top-bar {
    background: #1f2937;
    color: #cbd5e1;
    font-size: 13px;
    padding: 8px 0;
}
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.top-phone { display: inline-flex; align-items: center; gap: 6px; }
.top-phone svg { fill: #cbd5e1; }

/* ===== 导航 ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-mark {
    padding: 8px 14px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--orange), var(--orange-2));
    color: #fff;
    font-weight: 800;
    font-size: 16px;
    letter-spacing: .5px;
    box-shadow: 0 4px 12px rgba(255,131,17,.32);
    white-space: nowrap;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-text strong { color: var(--text-dark); font-size: 17px; }
.logo-text span { color: var(--text-muted); font-size: 12px; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
    padding: 10px 16px;
    font-size: 15px;
    color: var(--text);
    border-radius: 8px;
    transition: all .2s ease;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 3px;
    white-space: nowrap;
}
.nav-link:hover { color: var(--brand); background: var(--brand-light); }
.nav-link.active { color: var(--brand); font-weight: 600; }
.nav-cta {
    background: linear-gradient(135deg, var(--orange), var(--orange-2));
    color: #fff !important;
    margin-left: 6px;
    box-shadow: 0 4px 12px rgba(255,131,17,.3);
}
.nav-cta:hover { background: linear-gradient(135deg, var(--orange-2), var(--orange)); color: #fff !important; transform: translateY(-1px); }

/* 下拉菜单 */
.nav-drop { position: relative; }
.drop-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 16px 44px rgba(15,23,42,.14);
    border: 1px solid var(--border);
    display: flex;
    gap: 8px;
    padding: 22px 24px;
    opacity: 0;
    visibility: hidden;
    transition: all .25s ease;
    z-index: 101;
    min-width: 620px;
}
.nav-drop:hover .drop-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.drop-menu::before { content: ''; position: absolute; top: -8px; left: 0; right: 0; height: 8px; }
.drop-col { min-width: 170px; }
.drop-col h5 {
    font-size: 13px;
    color: var(--brand);
    font-weight: 700;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}
.drop-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: var(--text);
}
.drop-col a:hover { color: var(--orange); padding-left: 4px; }

.nav-toggle { display: none; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text-dark); margin: 5px 0; border-radius: 2px; transition: .3s; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 26px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    transition: all .25s ease;
    border: 1px solid transparent;
    cursor: pointer;
}
.btn-primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: #fff;
    box-shadow: 0 8px 20px rgba(0,112,240,.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,112,240,.38); }
.btn-ghost { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.55); backdrop-filter: blur(4px); }
.btn-ghost:hover { background: rgba(255,255,255,.26); }
.btn-outline { border: 1.5px solid var(--brand); color: var(--brand); background: transparent; }
.btn-outline:hover { background: var(--brand); color: #fff; }
.btn-text { color: var(--orange); padding: 12px 16px; }
.btn-text:hover { color: var(--orange-2); text-decoration: underline; }
.btn-block { width: 100%; }

/* ===== Banner ===== */
.banner {
    position: relative;
    color: #fff;
    overflow: hidden;
    min-height: 660px;
    display: flex;
    align-items: center;
    padding: 60px 0;
}
.banner-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 82% 18%, rgba(255,131,17,.16), transparent 46%),
        radial-gradient(circle at 12% 82%, rgba(49,183,246,.20), transparent 46%),
        linear-gradient(135deg, #04306b 0%, #0a4ba8 42%, #0070f0 100%);
}
.banner-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(transparent 95%, rgba(255,255,255,.05) 95%),
        linear-gradient(90deg, transparent 95%, rgba(255,255,255,.05) 95%);
    background-size: 58px 58px;
}
.banner-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: 56px;
    align-items: center;
}
.banner-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255,131,17,.22);
    border: 1px solid rgba(255,171,7,.5);
    border-radius: 100px;
    font-size: 13.5px;
    color: #ffd8a8;
    margin-bottom: 22px;
    font-weight: 600;
}
.banner h1 {
    font-size: clamp(30px, 4.6vw, 50px);
    line-height: 1.28;
    font-weight: 800;
    letter-spacing: -.5px;
    margin-bottom: 18px;
}
.banner h1 em { font-style: normal; color: #ffc247; padding: 0 2px; }
.banner-sub { font-size: 18px; color: #cfe4fb; margin-bottom: 14px; font-weight: 500; }
.banner-desc { font-size: 15px; color: #c3d9f2; line-height: 1.85; margin-bottom: 34px; max-width: 640px; }
.banner-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.banner-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.bcard {
    background: rgba(255,255,255,.10);
    border: 1px solid rgba(255,255,255,.20);
    border-radius: 12px;
    padding: 20px 18px;
    display: flex;
    gap: 12px;
    align-items: center;
    backdrop-filter: blur(6px);
    transition: all .3s ease;
}
.bcard:hover { background: rgba(255,255,255,.18); transform: translateY(-3px); }
.bcard-ico { font-size: 26px; line-height: 1; }
.bcard h4 { font-size: 16px; margin-bottom: 2px; font-weight: 700; }
.bcard p { font-size: 12.5px; color: #cfe0f5; line-height: 1.45; }

/* ===== 数据条 ===== */
.stats { background: #fff; border-bottom: 1px solid var(--border); }
.stats-inner { display: grid; grid-template-columns: repeat(4, 1fr); padding: 34px 0; }
.stat { text-align: center; border-right: 1px solid var(--border); padding: 8px 16px; }
.stat:last-child { border-right: none; }
.stat strong { display: block; font-size: 36px; color: var(--brand); font-weight: 800; line-height: 1.1; margin-bottom: 6px; }
.stat sup { font-size: 17px; color: var(--orange); margin-left: 2px; }
.stat span { color: var(--text-muted); font-size: 14.5px; }

/* ===== Section 通用 ===== */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.section-en {
    display: inline-block;
    font-size: 12.5px;
    letter-spacing: 4px;
    color: var(--orange);
    font-weight: 700;
    margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(28px, 4vw, 38px); color: var(--text-dark); font-weight: 700; margin-bottom: 14px; letter-spacing: -.5px; }
.section-head p { color: var(--text-muted); font-size: 16px; }

/* ===== 产品分类 Tab ===== */
.cat-tabs { display: flex; justify-content: center; gap: 10px; margin-bottom: 28px; flex-wrap: wrap; }
.cat-tab {
    padding: 10px 26px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    background: #fff;
    border: 1.5px solid var(--border);
    transition: all .25s ease;
}
.cat-tab:hover { border-color: var(--brand); color: var(--brand); }
.cat-tab.active { background: var(--brand); border-color: var(--brand); color: #fff; box-shadow: 0 6px 16px rgba(0,112,240,.25); }

.cat-desc { text-align: center; max-width: 860px; margin: 0 auto 40px; min-height: 76px; }
.cat-desc-item { display: none; }
.cat-desc-item.active { display: block; animation: fadeIn .35s ease; }
.cat-desc-item h3 { font-size: 22px; color: var(--text-dark); margin-bottom: 10px; font-weight: 700; }
.cat-desc-item p { color: var(--text-muted); font-size: 15px; line-height: 1.75; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ===== 产品列表 ===== */
.product-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 30px 26px 24px;
    display: flex;
    flex-direction: column;
    transition: all .3s ease;
    position: relative;
    overflow: hidden;
}
.product-item::before {
    content: '';
    position: absolute; top: 0; left: 0; width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--brand), var(--orange));
    transform: scaleX(0); transform-origin: left; transition: transform .4s ease;
}
.product-item:hover { transform: translateY(-5px); box-shadow: 0 18px 40px rgba(15,23,42,.10); border-color: rgba(0,112,240,.3); }
.product-item:hover::before { transform: scaleX(1); }
.product-item.hide { display: none; }

.p-logo {
    width: 74px; height: 74px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--brand), #31b7f6);
    color: #fff;
    display: grid; place-items: center;
    font-size: 16px; font-weight: 800;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(0,112,240,.26);
    letter-spacing: -.5px;
}
.product-item[data-cat="mfg"] .p-logo { background: linear-gradient(135deg, #12a67a, #3ddc97); box-shadow: 0 8px 20px rgba(18,166,122,.26); }
.product-item[data-cat="mobile"] .p-logo { background: linear-gradient(135deg, var(--orange), var(--orange-2)); box-shadow: 0 8px 20px rgba(255,131,17,.26); }

.p-body { flex: 1; }
.p-body h3 { font-size: 21px; color: var(--text-dark); font-weight: 700; margin-bottom: 4px; }
.p-sub { display: block; font-size: 13.5px; color: var(--orange); font-weight: 600; margin-bottom: 12px; }
.p-body > p { font-size: 14px; color: var(--text-muted); line-height: 1.75; margin-bottom: 14px; }
.p-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px; }
.p-tags span {
    font-size: 12px;
    color: var(--brand);
    background: var(--brand-light);
    padding: 4px 11px;
    border-radius: 4px;
    font-weight: 600;
}
.p-action { display: flex; align-items: center; gap: 6px; padding-top: 16px; border-top: 1px dashed var(--border); }
.p-action .btn { padding: 10px 20px; font-size: 14px; }

/* ===== 核心能力 ===== */
.ability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.ability-card {
    background: #fff;
    border-radius: 14px;
    padding: 32px 26px;
    border: 1px solid var(--border);
    transition: all .3s ease;
}
.ability-card:hover { transform: translateY(-5px); box-shadow: 0 16px 36px rgba(15,23,42,.09); }
.ab-ico {
    width: 58px; height: 58px;
    border-radius: 14px;
    display: grid; place-items: center;
    font-size: 28px;
    margin-bottom: 18px;
    box-shadow: 0 8px 18px rgba(15,23,42,.12);
}
.ability-card h3 { font-size: 20px; color: var(--text-dark); font-weight: 700; margin-bottom: 8px; }
.ab-desc { font-size: 13.5px; color: var(--text-muted); line-height: 1.65; margin-bottom: 16px; min-height: 46px; }
.ability-card ul { display: flex; flex-wrap: wrap; gap: 7px; }
.ability-card ul li {
    font-size: 12.5px;
    color: var(--text);
    background: #f2f6fb;
    padding: 5px 11px;
    border-radius: 4px;
    font-weight: 500;
}

/* ===== 行业解决方案 ===== */
.industry-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-bottom: 56px; }
.industry-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 26px 12px;
    text-align: center;
    transition: all .3s ease;
    cursor: pointer;
}
.industry-item:hover {
    border-color: var(--brand);
    background: var(--brand-light);
    transform: translateY(-4px);
    box-shadow: 0 12px 26px rgba(0,112,240,.14);
}
.ind-ico { font-size: 30px; display: block; margin-bottom: 10px; }
.industry-item h4 { font-size: 14.5px; color: var(--text-dark); font-weight: 600; }

/* ===== 行业案例 ===== */
.case-title { text-align: center; font-size: 22px; color: var(--text-dark); font-weight: 700; margin-bottom: 30px; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
    background: var(--bg-alt);
    border-radius: 12px;
    padding: 28px 24px;
    border-left: 3px solid var(--orange);
    transition: all .3s ease;
}
.case-card:hover { background: #fff; box-shadow: 0 12px 28px rgba(15,23,42,.08); transform: translateY(-3px); }
.case-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    color: var(--orange);
    margin-bottom: 12px;
}
.case-card p { font-size: 14px; color: var(--text-muted); line-height: 1.78; }

/* ===== 授权资质 ===== */
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.honor-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all .3s ease;
    display: flex;
    flex-direction: column;
}
.honor-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(15,23,42,.10); border-color: rgba(0,112,240,.3); }
.honor-img { aspect-ratio: 3/4; background: #eef2f8; overflow: hidden; }
.honor-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.honor-card:hover .honor-img img { transform: scale(1.04); }
.honor-info { padding: 18px 20px 22px; flex: 1; display: flex; flex-direction: column; }
.honor-info h3 { font-size: 16px; color: var(--text-dark); font-weight: 700; margin-bottom: 10px; line-height: 1.45; }
.honor-info p { font-size: 13.5px; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; flex: 1; }
.honor-tag {
    display: inline-block;
    align-self: flex-start;
    font-size: 12px;
    color: var(--orange-2);
    background: var(--orange-light);
    padding: 4px 12px;
    border-radius: 4px;
    font-weight: 600;
}

/* ===== 免费试用 ===== */
.section-trial { background: linear-gradient(135deg, #04306b 0%, #0a4ba8 55%, #0070f0 100%); color: #fff; position: relative; overflow: hidden; }
.section-trial::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(circle at 85% 15%, rgba(255,131,17,.18), transparent 45%);
}
.trial-wrap {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
}
.trial-left .section-en { color: #ffc247; }
.trial-left h2 { font-size: clamp(26px, 3.6vw, 36px); font-weight: 700; margin-bottom: 14px; letter-spacing: -.5px; }
.trial-left > p { color: #cfe0f5; font-size: 15.5px; line-height: 1.8; margin-bottom: 32px; }
.trial-contact { display: flex; flex-direction: column; gap: 20px; }
.tc-item { display: flex; gap: 14px; align-items: flex-start; }
.tc-ico {
    flex-shrink: 0;
    width: 44px; height: 44px;
    border-radius: 10px;
    background: rgba(255,255,255,.12);
    display: grid; place-items: center;
    font-size: 21px;
}
.tc-item h5 { font-size: 14px; color: #b9d3f2; font-weight: 500; margin-bottom: 4px; }
.tc-item a { font-size: 19px; font-weight: 800; color: #fff; display: inline-block; }
.tc-item a:hover { color: #ffc247; }
.tc-phone2 { margin-left: 14px; }
.tc-item p { font-size: 15px; color: #e2edfa; }
.tc-qr { display: flex; gap: 12px; margin-top: 8px; }
.tc-qr img { width: 92px; height: 92px; border-radius: 8px; background: #fff; padding: 3px; }

.trial-form {
    background: #fff;
    border-radius: 16px;
    padding: 36px 32px;
    box-shadow: 0 24px 56px rgba(0,0,0,.22);
    color: var(--text);
}
.trial-form h3 { font-size: 22px; color: var(--text-dark); font-weight: 700; margin-bottom: 22px; text-align: center; }
.form-row { margin-bottom: 14px; }
.form-row input, .form-row select, .form-row textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    background: #fafcfe;
    transition: all .2s ease;
    outline: none;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
    border-color: var(--brand);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0,112,240,.10);
}
.form-row textarea { resize: vertical; font-family: inherit; }
.form-tip { font-size: 12.5px; color: var(--text-muted); text-align: center; margin-top: 12px; line-height: 1.6; }

/* ===== 新闻中心 ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-col { background: var(--bg-alt); border-radius: 12px; padding: 28px 24px; }
.news-col-title {
    font-size: 18px;
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--brand);
    display: inline-block;
}
.news-col ul li {
    padding: 11px 0;
    border-bottom: 1px dashed #dde5ef;
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.news-col ul li:last-child { border-bottom: none; }
.news-col ul li a { font-size: 14.5px; color: var(--text); line-height: 1.6; }
.news-col ul li a:hover { color: var(--brand); }
.news-col ul li span { font-size: 12px; color: #9aa5b3; }

/* ===== 关于 ===== */
.about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: start; }
.about-text p { margin-bottom: 18px; color: var(--text); line-height: 1.85; }
.about-text strong { color: var(--text-dark); font-weight: 600; }
.about-points { margin-top: 22px; }
.about-points li { display: flex; align-items: flex-start; gap: 10px; padding: 8px 0; }
.about-points li i {
    flex-shrink: 0;
    display: inline-grid; place-items: center;
    width: 22px; height: 22px;
    border-radius: 50%;
    background: var(--brand-light);
    color: var(--brand);
    font-style: normal; font-size: 12px; font-weight: 700;
    margin-top: 3px;
}
.about-visual { position: sticky; top: 110px; }
.about-card {
    background: #fff;
    border-radius: 16px;
    padding: 34px 30px;
    box-shadow: 0 20px 50px rgba(15,23,42,.08);
    border: 1px solid var(--border);
}
.about-card h3 { font-size: 21px; color: var(--text-dark); margin-bottom: 22px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.about-card-item { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; border-bottom: 1px dashed var(--border); }
.about-card-item:last-child { border-bottom: none; }
.about-card-item span { font-weight: 700; color: var(--text-dark); font-size: 16.5px; }
.about-card-item em {
    color: var(--orange);
    font-style: normal; font-size: 13px;
    background: var(--orange-light);
    padding: 4px 12px; border-radius: 100px; font-weight: 600;
}

/* ===== 页脚 ===== */
.footer { background: #1a2332; color: #a8b5c6; padding: 58px 0 26px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 36px; }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer-logo strong { color: #fff; font-size: 17px; }
.footer-col p { font-size: 14px; line-height: 1.75; }
.footer-col h4 { color: #fff; font-size: 16.5px; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--orange); }
.footer-col ul li { padding: 5px 0; }
.footer-col ul li a { font-size: 14px; }
.footer-col ul li a:hover { color: #fff; }
.footer-contact li { font-size: 14px; padding: 6px 0; }
.footer-qr { display: flex; gap: 12px; margin-top: 14px; }
.footer-qr img { width: 86px; height: 86px; border-radius: 8px; background: #fff; padding: 3px; }

.footer-links { border-top: 1px solid rgba(255,255,255,.08); padding-top: 20px; margin-bottom: 22px; font-size: 13.5px; }
.fl-title { color: #7d8a9c; margin-right: 6px; }
.footer-links a { display: inline-block; margin: 4px 14px 4px 0; }
.footer-links a:hover { color: #fff; }

.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 20px; text-align: center; }
.footer-bottom p { font-size: 13px; color: #6f7d90; }
.footer-beian { margin-top: 5px; font-size: 12.5px !important; }
.footer-beian a:hover { color: var(--orange); }

/* ===== 浮动客服 ===== */
.floating { position: fixed; right: 24px; bottom: 32px; z-index: 90; display: flex; flex-direction: column; gap: 10px; }
.float-btn {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 8px 22px rgba(15,23,42,.16);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--brand);
    transition: all .3s ease;
    border: 1px solid var(--border);
}
.float-btn span { font-size: 11px; margin-top: 2px; }
.float-btn:hover { transform: translateY(-3px); color: var(--orange); }
.float-trial { background: linear-gradient(135deg, var(--orange), var(--orange-2)); color: #fff; border: none; }
.float-trial:hover { color: #fff; opacity: .92; }
.float-btn.top { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; border: none; }
.float-btn.top:hover { color: #fff; opacity: .9; }

/* ===== 弹窗 ===== */
.modal {
    position: fixed; inset: 0;
    z-index: 200;
    display: none;
    align-items: center; justify-content: center;
    padding: 24px;
}
.modal.open { display: flex; }
.modal-mask { position: absolute; inset: 0; background: rgba(10,20,35,.55); backdrop-filter: blur(3px); }
.modal-box {
    position: relative;
    background: #fff;
    border-radius: 16px;
    padding: 38px 34px;
    max-width: 540px;
    width: 100%;
    box-shadow: 0 30px 70px rgba(0,0,0,.28);
    animation: modalIn .3s ease;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(20px) scale(.97); } to { opacity: 1; transform: none; } }
.modal-close {
    position: absolute; top: 12px; right: 16px;
    font-size: 28px; color: #9aa5b3; line-height: 1;
    width: 34px; height: 34px;
    border-radius: 50%;
    transition: all .2s;
}
.modal-close:hover { background: #f0f4f9; color: var(--text-dark); }
.modal-box h3 { font-size: 22px; color: var(--text-dark); margin-bottom: 14px; font-weight: 700; padding-right: 30px; }
.modal-box p { font-size: 15px; color: var(--text-muted); line-height: 1.85; margin-bottom: 26px; }
.modal-actions { display: flex; gap: 12px; }
.modal-actions .btn { flex: 1; }

/* ===== 滚动淡入动画（已禁用，元素默认全可见）=====
   说明：原版用 IntersectionObserver 给元素加 .is-visible 实现淡入，但会导致
   headless 截图、爬虫、慢 JS 加载等场景出现"全部 opacity:0"。
   改为静态站无需动画，元素默认全可见。
   如需重新启用，去掉本注释、恢复下方规则，并在 script.js 启用 IO 逻辑。 */

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
    .nav-link { padding: 9px 11px; font-size: 14px; }
    .ability-grid { grid-template-columns: repeat(2, 1fr); }
    .industry-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1024px) {
    .nav { display: none; }
    .banner-inner { grid-template-columns: 1fr; gap: 40px; }
    .banner-cards { grid-template-columns: repeat(4, 1fr); }
    .product-list { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .honor-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: 1fr; }
    .about-grid, .trial-wrap { grid-template-columns: 1fr; gap: 36px; }
    .about-visual { position: static; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-toggle { display: block; }
    .nav.open {
        display: flex;
        position: fixed;
        top: 76px; left: 0; right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 8px 0;
        box-shadow: 0 10px 24px rgba(0,0,0,.10);
        border-bottom: 2px solid var(--brand);
        max-height: calc(100vh - 76px);
        overflow-y: auto;
    }
    .nav-link { padding: 14px 24px; border-radius: 0; }
    .nav-cta { margin: 8px 24px; text-align: center; justify-content: center; }
    .drop-menu {
        position: static;
        transform: none;
        opacity: 1; visibility: visible;
        box-shadow: none; border: none;
        flex-direction: column;
        min-width: auto;
        padding: 4px 24px 12px;
        display: none;
    }
    .nav-drop:hover .drop-menu { transform: none; }
    .nav-drop.open .drop-menu { display: flex; }
    .drop-col { min-width: auto; }
}

@media (max-width: 768px) {
    .top-bar-inner { justify-content: center; font-size: 12px; }
    .top-bar-inner > span:first-child { display: none; }
    .header-inner { height: 64px; }
    .logo-text span { display: none; }
    .logo-mark { padding: 6px 12px; font-size: 15px; }
    .nav.open { top: 64px; max-height: calc(100vh - 64px); }
    .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
    .nav-toggle.open span:nth-child(2) { opacity: 0; }
    .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(6px,-6px); }

    .section { padding: 54px 0; }
    .section-head { margin-bottom: 34px; }
    .banner { min-height: auto; padding: 44px 0 60px; }
    .banner h1 { font-size: 29px; }
    .banner-desc { font-size: 14.5px; }
    .banner-cards { grid-template-columns: repeat(2, 1fr); }

    .stats-inner { grid-template-columns: repeat(2, 1fr); padding: 22px 0; gap: 14px; }
    .stat { border-right: none; border-bottom: 1px solid var(--border); padding: 12px 8px; }
    .stat:nth-child(odd) { border-right: 1px solid var(--border); }
    .stat:nth-child(3), .stat:nth-child(4) { border-bottom: none; }
    .stat strong { font-size: 29px; }

    .product-list { grid-template-columns: 1fr; gap: 16px; }
    .ability-grid { grid-template-columns: 1fr; }
    .industry-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .industry-item { padding: 18px 8px; }
    .ind-ico { font-size: 24px; }
    .industry-item h4 { font-size: 13px; }
    .case-grid { grid-template-columns: 1fr; }
    .honor-grid { grid-template-columns: 1fr; gap: 16px; }
    .honor-card { flex-direction: row; }
    .honor-img { flex-shrink: 0; width: 130px; aspect-ratio: auto; }

    .trial-form { padding: 26px 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 26px; }
    .floating { right: 14px; bottom: 20px; }
    .float-btn { width: 48px; height: 48px; }
    .modal-box { padding: 30px 22px; }
}

@media (max-width: 420px) {
    .container { padding: 0 16px; }
    .banner-cta { flex-direction: column; align-items: stretch; }
    .cat-tab { padding: 9px 18px; font-size: 14px; }
    .industry-grid { grid-template-columns: repeat(2, 1fr); }
    .p-action { flex-direction: column; align-items: stretch; }
    .p-action .btn { width: 100%; }
    .modal-actions { flex-direction: column; }
}