/* 高德鹰眼IoT H5 —— 深蓝收口 + 浅底内容，单一强调色 #1D6FE8 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
    background: #F5F8FC;
    color: #3E5372;
    font-size: 15px;
    line-height: 1.7;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

#app { max-width: 640px; margin: 0 auto; padding-bottom: 72px; min-height: 100vh; background: #F5F8FC; }

/* ===== 深蓝首屏 ===== */
.hero {
    background: linear-gradient(160deg, #0A1F3E 0%, #0E2A52 100%);
    padding: 34px 22px 30px;
}
.hero-brand { color: #fff; font-size: 26px; font-weight: 600; letter-spacing: 1px; }
.hero-slogan { margin-top: 10px; color: #8FB8F2; font-size: 15px; font-weight: 600; letter-spacing: 1px; }
.hero-banner { width: 100%; margin-top: 20px; border-radius: 10px; }
.hero-caps { margin-top: 22px; display: flex; }
.cap { flex: 1; padding: 0 10px; border-left: 1px solid rgba(143,184,242,.35); }
.cap:first-child { border-left: none; padding-left: 0; }
.cap-title { display: block; color: #fff; font-size: 13px; font-weight: 600; }
.cap-desc { display: block; margin-top: 4px; color: #8A9AB4; font-size: 11px; line-height: 1.5; }

/* ===== 通用 ===== */
.section-title {
    margin: 28px 18px 12px;
    color: #0A1F3E;
    font-size: 19px;
    font-weight: 600;
}
.section-title::before {
    content: "";
    display: inline-block;
    width: 4px; height: 16px;
    background: #1D6FE8;
    border-radius: 2px;
    margin-right: 8px;
    vertical-align: -2px;
}
.card {
    margin: 0 18px 14px;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(14,42,82,.05);
}
.divider { height: 1px; background: #E7ECF3; margin: 16px 0; }
.footnote { margin: 20px 18px 32px; color: #8A9AB4; font-size: 12px; line-height: 1.7; }
.footer { padding: 28px 0 8px; text-align: center; color: #8A9AB4; font-size: 12px; }

/* ===== 首页产品介绍 ===== */
.intro-headline { display: block; color: #0A1F3E; font-size: 17px; font-weight: 600; line-height: 1.5; }
.intro-plain { display: block; margin-top: 10px; font-size: 14px; line-height: 1.8; }
.intro-block { margin-top: 14px; }
.intro-block-title { display: flex; align-items: center; }
.intro-block-dot { width: 6px; height: 6px; border-radius: 50%; background: #1D6FE8; margin-right: 8px; }
.intro-block-name { color: #0A1F3E; font-size: 15px; font-weight: 600; }
.intro-block-desc { display: block; margin-top: 6px; font-size: 13px; line-height: 1.7; }
.scene-chips { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.scene-chip { padding: 4px 12px; background: #F0F5FD; border-radius: 6px; color: #1D6FE8; font-size: 12px; }

/* ===== 首页产品卡 ===== */
.product-card { display: block; cursor: pointer; border-top: 1px solid #E7ECF3; }
.product-card:first-of-type { border-top: none; }
.product-head { display: flex; align-items: baseline; justify-content: space-between; }
.product-name { color: #0A1F3E; font-size: 17px; font-weight: 600; }
.product-model { color: #8A9AB4; font-size: 12px; }
.product-tagline { display: block; margin-top: 8px; font-size: 14px; line-height: 1.6; }
.product-go {
    margin-top: 12px; padding-top: 12px;
    border-top: 1px solid #E7ECF3;
    display: flex; align-items: center; justify-content: space-between;
    color: #1D6FE8; font-size: 13px;
}
.product-go .arrow { font-size: 18px; line-height: 1; }
.more-link { display: block; margin: 0 18px 8px; padding: 12px 0; text-align: center; color: #1D6FE8; font-size: 14px; }

/* ===== 首页服务速览 ===== */
.service-item { display: flex; align-items: center; padding: 12px 0; border-top: 1px solid #E7ECF3; cursor: pointer; }
.service-item:first-child { border-top: none; padding-top: 0; }
.service-key { width: 30px; color: #8A9AB4; font-size: 13px; flex-shrink: 0; }
.service-body { flex: 1; display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.service-name { color: #0A1F3E; font-size: 15px; font-weight: 600; }
.service-need { color: #8A9AB4; font-size: 12px; text-align: right; }
.service-arrow { color: #8A9AB4; font-size: 18px; line-height: 1; margin-left: 6px; }

/* ===== 页头（内页） ===== */
.page-intro { padding: 26px 18px 4px; }
.page-intro .intro-title { color: #0A1F3E; font-size: 22px; font-weight: 600; }
.page-intro .intro-desc { display: block; margin-top: 8px; color: #8A9AB4; font-size: 13px; line-height: 1.7; }

/* ===== 硬件列表 ===== */
.series-card { display: block; cursor: pointer; }
.series-image { width: 100%; max-height: 240px; object-fit: contain; background: #F5F8FC; border-radius: 10px; }
.series-head { margin-top: 14px; display: flex; align-items: baseline; justify-content: space-between; }
.series-name { color: #0A1F3E; font-size: 18px; font-weight: 600; }
.series-model { color: #8A9AB4; font-size: 12px; }
.series-sub { display: block; margin-top: 2px; color: #8A9AB4; font-size: 12px; }
.series-tagline { display: block; margin-top: 8px; font-size: 14px; line-height: 1.6; }
.applies { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.apply-chip { padding: 4px 12px; background: #F0F5FD; border-radius: 6px; color: #1D6FE8; font-size: 12px; }
.series-more {
    margin-top: 12px; padding-top: 12px;
    border-top: 1px solid #E7ECF3;
    display: flex; align-items: center; justify-content: space-between;
    color: #1D6FE8; font-size: 13px;
}
.series-more .arrow { font-size: 18px; line-height: 1; }

/* ===== 产品详情 ===== */
.detail-hero { background: linear-gradient(160deg, #0A1F3E 0%, #0E2A52 100%); padding: 28px 22px; }
.detail-name { color: #fff; font-size: 23px; font-weight: 600; }
.detail-series { display: block; margin-top: 6px; color: #8FB8F2; font-size: 13px; }
.detail-tagline { display: block; margin-top: 14px; color: #E7ECF3; font-size: 15px; line-height: 1.6; }
.intro-text { font-size: 14px; line-height: 1.8; }
.image-card { padding: 10px; }
.image-card img { width: 100%; border-radius: 8px; background: #F5F8FC; }
.image-caption { display: block; margin-top: 10px; margin-bottom: 4px; text-align: center; color: #8A9AB4; font-size: 12px; line-height: 1.6; padding: 0 6px; }
.func-item { display: flex; align-items: flex-start; padding: 8px 0; }
.func-dot { width: 6px; height: 6px; margin-top: 9px; margin-right: 10px; border-radius: 50%; background: #1D6FE8; flex-shrink: 0; }
.func-text { flex: 1; font-size: 14px; line-height: 1.7; }
.org-item { display: flex; align-items: flex-start; padding: 7px 0; }
.org-dot { width: 6px; height: 6px; margin-top: 9px; margin-right: 10px; border-radius: 50%; background: #1D6FE8; flex-shrink: 0; }
.org-text { flex: 1; font-size: 14px; line-height: 1.7; }
.spec-row { display: flex; padding: 12px 0; border-top: 1px solid #E7ECF3; }
.spec-row:first-child { border-top: none; padding-top: 0; }
.spec-label { width: 118px; flex-shrink: 0; color: #8A9AB4; font-size: 13px; }
.spec-value { flex: 1; font-size: 13px; line-height: 1.6; }
.back-bar { padding: 14px 18px 0; }
.back-link { color: #1D6FE8; font-size: 14px; }

/* ===== 数据服务页：四层递进 ===== */
.layer-card { scroll-margin-top: 12px; border: 1px solid transparent; transition: border-color .3s, box-shadow .3s; }
.svc-active { border-color: #1D6FE8; box-shadow: 0 4px 18px rgba(29,111,232,.16); }
.layer-head { display: flex; align-items: center; }
.layer-step {
    width: 26px; height: 26px; margin-right: 10px; flex-shrink: 0;
    background: #1D6FE8; color: #fff; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 600;
}
.layer-name { color: #0A1F3E; font-size: 18px; font-weight: 600; }
.layer-plain { display: block; margin-top: 10px; font-size: 14px; line-height: 1.7; }
.layer-item { margin-top: 14px; padding: 12px 14px; background: #F5F8FC; border-radius: 10px; }
.layer-item-name { color: #0A1F3E; font-size: 15px; font-weight: 600; }
.layer-item-desc { margin-top: 4px; font-size: 13px; line-height: 1.7; }
.layer-apps { margin-top: 14px; display: flex; flex-direction: column; gap: 12px; }
.layer-apps .svc-card { background: #F5F8FC; border-radius: 10px; padding: 14px 16px; margin: 0; }
.svc-head { display: flex; align-items: baseline; }
.svc-index { color: #1D6FE8; font-size: 14px; font-weight: 600; margin-right: 8px; }
.svc-name { color: #0A1F3E; font-size: 17px; font-weight: 600; line-height: 1.5; }
.svc-meta { display: flex; align-items: flex-start; margin-top: 12px; }
.meta-label {
    width: 82px; flex-shrink: 0;
    color: #0A1F3E; font-size: 15px; font-weight: 600;
    letter-spacing: .5px; line-height: 1.7;
}
.meta-value { flex: 1; font-size: 14px; line-height: 1.75; }
.foot-item { display: block; color: #8A9AB4; font-size: 12px; line-height: 1.7; }
.platform-card { background: #0E2A52; }
.platform-badge {
    display: inline-block;
    padding: 3px 12px;
    background: #1D6FE8;
    border-radius: 6px;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
}
.platform-name { color: #fff; font-size: 17px; font-weight: 600; }
.platform-desc { display: block; margin-top: 8px; color: #8FB8F2; font-size: 13px; line-height: 1.7; }
.platform-point { margin-top: 10px; display: flex; align-items: flex-start; }
.platform-dot { width: 5px; height: 5px; margin-top: 8px; margin-right: 8px; border-radius: 50%; background: #8FB8F2; flex-shrink: 0; }
.platform-point-text { flex: 1; color: #E7ECF3; font-size: 13px; line-height: 1.7; }

/* ===== 欢迎合作语（低调小字） ===== */
.welcome-box {
    margin: 20px 18px 28px;
    text-align: center;
    color: #8A9AB4;
    font-size: 13px;
    line-height: 1.7;
}

/* ===== 应用视频 ===== */
.detail-video {
    width: 100%;
    border-radius: 8px;
    background: #0A1F3E;
    display: block;
}

/* ===== 关于页 ===== */
.about-hero { background: linear-gradient(160deg, #0A1F3E 0%, #0E2A52 100%); padding: 36px 22px; text-align: center; }
.about-title { color: #fff; font-size: 23px; font-weight: 600; letter-spacing: 1px; }
.about-sub { display: block; margin-top: 10px; color: #8FB8F2; font-size: 14px; }
.about-co { display: block; margin-top: 24px; color: #8A9AB4; font-size: 13px; }
.company-name { display: block; color: #0A1F3E; font-size: 18px; font-weight: 600; }
.company-desc { display: block; margin-top: 10px; font-size: 14px; line-height: 1.8; }
.contact-text { font-size: 14px; line-height: 1.8; }
.account-box { margin-top: 14px; padding: 14px 16px; background: #F5F8FC; border-radius: 10px; display: flex; align-items: center; }
.account-icon { width: 48px; height: 48px; border-radius: 8px; margin-right: 12px; flex-shrink: 0; }
.account-label-text { display: block; color: #8A9AB4; font-size: 11px; }
.account-name { display: block; margin-top: 2px; color: #0A1F3E; font-size: 16px; font-weight: 600; }
.copy-btn {
    margin-top: 14px; width: 100%;
    padding: 11px 0; border: none; border-radius: 8px;
    background: #1D6FE8; color: #fff; font-size: 15px;
    cursor: pointer;
}
.contact-tip { display: block; margin-top: 8px; color: #8A9AB4; font-size: 12px; }
.kf-outline-btn {
    margin-top: 10px; width: 100%;
    padding: 10px 0; border: 1px solid #1D6FE8; border-radius: 8px;
    background: #fff; color: #1D6FE8; font-size: 15px; font-weight: 500;
    cursor: pointer;
}
.kf-outline-btn:active { background: #F0F5FD; }
.comp-item { display: flex; align-items: flex-start; padding: 6px 0; }
.comp-dot { width: 5px; height: 5px; margin-top: 8px; margin-right: 10px; border-radius: 50%; background: #8A9AB4; flex-shrink: 0; }
.comp-text { flex: 1; color: #8A9AB4; font-size: 12px; line-height: 1.7; }

/* ===== 底部导航 ===== */
.tabbar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 99;
    max-width: 640px; margin: 0 auto;
    display: flex; background: #fff;
    border-top: 1px solid #E7ECF3;
    padding-bottom: env(safe-area-inset-bottom);
}
.tab {
    flex: 1; display: flex; flex-direction: column; align-items: center;
    padding: 7px 0 5px;
    color: #8A9AB4; font-size: 11px;
}
.tab-icon { width: 22px; height: 22px; margin-bottom: 2px; }
.tab.active { color: #1D6FE8; }

/* 分享引导浮层提示（可选） */
.toast {
    position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%);
    background: rgba(10,31,62,.9); color: #fff;
    padding: 8px 18px; border-radius: 20px; font-size: 13px;
    opacity: 0; transition: opacity .3s; pointer-events: none; z-index: 100;
}
.toast.show { opacity: 1; }

/* ===== 在线客服：悬浮按钮 ===== */
.kf-fab {
    position: fixed;
    right: 16px;
    bottom: calc(76px + env(safe-area-inset-bottom));
    z-index: 120;
    width: 52px; height: 52px;
    border: none; border-radius: 50%;
    background: #1D6FE8;
    color: #fff;
    box-shadow: 0 6px 18px rgba(29,111,232,.34);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    cursor: pointer;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}
.kf-fab:active { background: #1660D0; }
.kf-fab::before {
    content: "";
    position: absolute; top: 4px; right: 6px;
    width: 8px; height: 8px; border-radius: 50%;
    background: #2BB673;
    box-shadow: 0 0 0 2px #1D6FE8;
}
.kf-fab-icon { width: 21px; height: 21px; display: block; }
.kf-fab-text { font-size: 11px; line-height: 1.2; letter-spacing: .5px; }
@media (min-width: 680px) {
    .kf-fab { right: calc(50% - 304px); }
}

/* ===== 在线客服：邀请浮层 ===== */
.kf-mask {
    position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 200;
    background: rgba(10,31,62,.48);
    display: none;
    align-items: center; justify-content: center;
    padding: 0 30px;
}
.kf-mask.show { display: flex; }
.kf-panel {
    width: 100%; max-width: 330px;
    background: #fff; border-radius: 14px;
    padding: 22px 20px 16px;
    box-sizing: border-box;
    display: flex; flex-direction: column; align-items: center;
    animation: kfUp .22s ease-out;
}
@keyframes kfUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}
.kf-badge {
    padding: 3px 10px; border-radius: 4px;
    background: #F0F5FD; color: #1D6FE8;
    font-size: 11px; font-weight: 600; letter-spacing: 1px;
}
.kf-title {
    margin-top: 10px; color: #0A1F3E;
    font-size: 17px; font-weight: 600; line-height: 1.4; text-align: center;
}
.kf-desc {
    margin-top: 6px; color: #3E5372;
    font-size: 13px; line-height: 1.7; text-align: center;
}
.kf-points {
    width: 100%; margin-top: 12px;
    padding: 10px 12px; box-sizing: border-box;
    background: #F5F8FC; border-radius: 8px;
}
.kf-point {
    display: flex; align-items: flex-start;
    padding: 3px 0;
    font-size: 12px; line-height: 1.6; color: #3E5372;
}
.kf-point::before {
    content: "";
    width: 4px; height: 4px; margin-top: 8px; margin-right: 8px;
    border-radius: 50%; background: #1D6FE8; flex-shrink: 0;
}
.kf-qr { width: 150px; height: 150px; margin-top: 14px; border-radius: 8px; background: #F5F8FC; object-fit: contain; }
.kf-qr-tip { margin-top: 6px; color: #8A9AB4; font-size: 11px; }
.kf-primary {
    width: 100%; margin-top: 14px;
    padding: 12px 0; border: none; border-radius: 8px;
    background: #1D6FE8; color: #fff;
    font-size: 15px; font-weight: 600; font-family: inherit;
    cursor: pointer;
}
.kf-primary:active { background: #1660D0; }
.kf-secondary {
    margin-top: 9px; padding: 6px 0;
    border: none; background: none;
    color: #8A9AB4; font-size: 13px; font-family: inherit;
    cursor: pointer;
}
.kf-alt {
    margin-top: 2px; padding: 6px 0;
    border: none; background: none;
    color: #8A9AB4; font-size: 11px; font-family: inherit;
    text-decoration: underline;
    cursor: pointer;
}