* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #f5f7fb;
    color: #172033;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
}

a {
    color: #1d4ed8;
    text-decoration: none;
}

.article-image {
    margin: 28px 0;
}

.article-image img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.header-inner {
    width: min(1380px, calc(100% - 32px));
    margin: 0 auto;
}

.top-strip {
    background: #f0f0f0;
    color: #8a8f99;
    font-size: 13px;
}

.top-strip .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 34px;
    gap: 20px;
}

.top-strip nav {
    display: flex;
    gap: 16px;
    white-space: nowrap;
}

.top-strip a {
    color: #7b808a;
}

.brand-bar {
    display: grid;
    grid-template-columns: 340px minmax(360px, 1fr) 250px 116px;
    align-items: center;
    gap: 28px;
    min-height: 190px;
    background: #fff;
}

.brand-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 110px;
    border-right: 1px solid #cfd4dc;
}

.brand-logo img {
    max-width: 260px;
    max-height: 92px;
}

.brand-logo span {
    display: none;
    color: #1e66ad;
    font-size: 68px;
    font-weight: 800;
    letter-spacing: 1px;
    line-height: 1;
}

.brand-title strong {
    display: block;
    color: #050505;
    font-size: 38px;
    font-weight: 800;
    line-height: 1.2;
}

.brand-title p {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    margin: 16px 0 0;
    color: #666;
    font-size: 22px;
}

.brand-title p span::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 8px;
    border-radius: 999px;
    background: #f00;
    vertical-align: middle;
}

.brand-contact span {
    color: #8a8f99;
    font-size: 14px;
}

.brand-contact strong {
    display: block;
    color: #f10f0f;
    font-size: 26px;
    font-style: italic;
    line-height: 1.3;
}

.brand-contact form {
    display: flex;
    margin-top: 12px;
}

.brand-contact input {
    width: 180px;
    border: 1px solid #4d8bf7;
    border-right: 0;
    padding: 8px 10px;
}

.brand-contact button {
    border: 1px solid #4d8bf7;
    background: #4d8bf7;
    color: #fff;
    padding: 0 15px;
}

.brand-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: #8a8f99;
    font-size: 12px;
}

.brand-qr img,
.footer-qr img {
    width: 112px;
    height: 112px;
    object-fit: cover;
    border: 1px solid #d6e7ff;
    background:
        linear-gradient(90deg, #0ea5e9 50%, transparent 0) 0 0/10px 10px,
        linear-gradient(#0ea5e9 50%, transparent 0) 0 0/10px 10px,
        #fff;
}

.main-nav {
    background: #2f7fb9;
}

.main-nav .header-inner {
    display: flex;
    justify-content: center;
    gap: clamp(20px, 4vw, 58px);
}

.main-nav a {
    color: #fff;
    font-size: 26px;
    font-weight: 600;
    line-height: 80px;
    white-space: nowrap;
}

.geo-site-banner {
    width: 100%;
    overflow: hidden;
    background: #eaf6ff;
}

.geo-site-banner img {
    display: block;
    width: 100%;
    max-width: 1920px;
    height: auto;
    margin: 0 auto;
}

.douyin-banner {
    min-height: 560px;
    background:
        radial-gradient(circle at 50% 18%, rgba(255,255,255,0.95), rgba(255,255,255,0.24) 40%, rgba(255,255,255,0) 66%),
        linear-gradient(180deg, rgba(218,238,255,0.92), rgba(236,248,255,0.78)),
        url("https://www.zjkqson.com/Templates/templates/style/banner.jpg") center/cover no-repeat;
    overflow: hidden;
}

.douyin-inner {
    width: min(1280px, calc(100% - 32px));
    margin: 0 auto;
    padding: 108px 0 96px;
    text-align: center;
}

.douyin-inner h2 {
    margin: 0 0 58px;
    color: #050505;
    font-size: 40px;
    font-weight: 800;
    line-height: 1.25;
}

.douyin-cards {
    display: grid;
    grid-template-columns: repeat(5, minmax(150px, 1fr));
    gap: 38px;
    align-items: center;
}

.douyin-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    min-height: 210px;
    padding: 20px 16px 22px;
    border-radius: 9px;
    color: #fff;
    box-shadow: 0 18px 36px rgba(41, 80, 140, 0.18);
    overflow: hidden;
}

.douyin-card::before {
    content: "DOU";
    position: absolute;
    inset: 20px auto auto 22px;
    color: rgba(255,255,255,0.08);
    font-size: 68px;
    font-weight: 900;
    line-height: 1;
}

.douyin-mark {
    position: absolute;
    left: 16px;
    top: 12px;
    font-size: 15px;
    font-weight: 700;
}

.douyin-code {
    display: grid;
    place-items: center;
    width: 116px;
    height: 116px;
    margin-bottom: 18px;
    border-radius: 999px;
    background: #fff;
}

.douyin-code span {
    width: 86px;
    height: 86px;
    border-radius: 999px;
    background:
        radial-gradient(circle, transparent 0 22px, currentColor 23px 25px, transparent 26px),
        repeating-conic-gradient(currentColor 0 4deg, transparent 4deg 8deg);
    color: rgba(119, 78, 42, 0.72);
}

.douyin-card strong,
.douyin-card em {
    position: relative;
    z-index: 1;
}

.douyin-card strong {
    font-size: 13px;
    line-height: 1.5;
}

.douyin-card em {
    font-style: normal;
    font-size: 11px;
    opacity: 0.9;
}

.douyin-card-1 {
    background: #8b6639;
}

.douyin-card-2 {
    background: #b8796f;
}

.douyin-card-3 {
    background: #bd7687;
}

.douyin-card-4 {
    background: #6f675d;
}

.douyin-card-5 {
    background: linear-gradient(135deg, #a23bd8, #2258f5);
}

.hero,
.list,
.article {
    width: min(960px, calc(100% - 32px));
    margin: 0 auto;
}

.hero {
    padding: 56px 0 24px;
}

.hero h1,
.article h1 {
    margin: 0 0 12px;
    font-size: 32px;
    line-height: 1.25;
}

.hero p {
    max-width: 720px;
    margin: 0;
    color: #526071;
}

.card,
.article {
    background: #fff;
    border: 1px solid #e3e8ef;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

.card {
    margin: 16px 0;
    padding: 22px 24px;
}

.card h2 {
    margin: 0 0 8px;
    font-size: 20px;
}

.card p {
    margin: 0 0 12px;
    color: #526071;
}

.article {
    margin-top: 32px;
    padding: 36px;
}

.back {
    display: inline-block;
    margin-bottom: 16px;
    color: #526071;
}

.meta {
    color: #728096;
    font-size: 14px;
}

.content {
    margin-top: 28px;
    font-size: 17px;
}

.content h2,
.content h3 {
    margin-top: 30px;
}

.content p {
    margin: 14px 0;
}

.content strong {
    font-weight: 700;
}

.content code {
    border-radius: 4px;
    background: #f1f5f9;
    color: #0f172a;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.92em;
    padding: 2px 5px;
}

.content ol.dimension-list {
    margin: 14px 0 22px;
    padding-left: 24px;
}

.content ol.dimension-list li {
    margin: 9px 0;
    padding-left: 4px;
}

.table-wrap {
    margin: 22px 0;
    overflow-x: auto;
    border: 1px solid #dbe4f0;
    border-radius: 8px;
    background: #fff;
}

.content table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
    font-size: 15px;
}

.content th,
.content td {
    border-bottom: 1px solid #e5eaf2;
    padding: 12px 14px;
    text-align: left;
    vertical-align: top;
}

.content th {
    background: #f1f5f9;
    color: #0f172a;
    font-weight: 700;
    white-space: nowrap;
}

.content tr:last-child td {
    border-bottom: 0;
}

.empty {
    padding: 32px 0;
    color: #728096;
}

.site-footer {
    margin-top: 54px;
    background: #282d43;
    color: #fff;
}

.footer-main {
    display: grid;
    grid-template-columns: 180px 180px 180px 220px 220px;
    gap: 20px;
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 30px 0;
}

.footer-col {
    border-right: 1px solid rgba(255,255,255,0.09);
}

.footer-col h3 {
    margin: 0 0 12px;
    font-size: 16px;
}

.footer-col a {
    display: block;
    color: #fff;
    margin: 8px 0;
}

.footer-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: #b8c0d8;
    border-right: 1px solid rgba(255,255,255,0.09);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
}

.footer-contact strong {
    color: #ff4b2f;
    font-size: 24px;
}

.footer-contact b {
    margin-top: 18px;
    font-size: 24px;
}

.footer-contact span {
    color: #fff;
    font-weight: 600;
}

.footer-copy {
    background: #464d68;
    padding: 12px 16px;
    text-align: center;
    color: #fff;
    font-size: 14px;
    line-height: 1.65;
}

@media (max-width: 1100px) {
    .brand-bar {
        grid-template-columns: 220px 1fr;
        min-height: auto;
        padding: 24px 0;
    }

    .brand-title strong {
        font-size: 28px;
    }

    .brand-contact,
    .brand-qr {
        display: none;
    }

    .main-nav .header-inner {
        justify-content: flex-start;
        gap: 24px;
        overflow-x: auto;
    }

    .main-nav a {
        font-size: 20px;
        line-height: 58px;
    }

    .footer-main {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .douyin-banner {
        min-height: auto;
    }

    .douyin-inner {
        padding: 58px 0 64px;
    }

    .douyin-inner h2 {
        margin-bottom: 32px;
        font-size: 30px;
    }

    .douyin-cards {
        grid-template-columns: repeat(3, minmax(150px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 640px) {
    .top-strip {
        display: none;
    }

    .brand-bar {
        grid-template-columns: 1fr;
        gap: 12px;
        text-align: center;
    }

    .brand-logo {
        border-right: 0;
        min-height: auto;
    }

    .brand-logo span {
        font-size: 46px;
    }

    .brand-title strong {
        font-size: 24px;
    }

    .brand-title p {
        justify-content: center;
        font-size: 15px;
        gap: 10px;
    }

    .hero h1,
    .article h1 {
        font-size: 26px;
    }

    .article {
        padding: 24px 18px;
    }

    .footer-main {
        grid-template-columns: 1fr;
    }

    .footer-col,
    .footer-qr {
        border-right: 0;
    }

    .douyin-inner {
        padding: 38px 0 42px;
    }

    .douyin-inner h2 {
        font-size: 24px;
    }

    .douyin-cards {
        grid-template-columns: 1fr;
    }

    .douyin-card {
        min-height: 176px;
    }
}

/* zjkqson.com original-style header/footer compatibility */
.container,
.container_top {
    width: min(1380px, calc(100% - 32px));
    margin: 0 auto;
}

.row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.w100 {
    width: 100%;
}

.text-center {
    text-align: center;
}

.hidden-sm,
.hidden-xs {
    display: block;
}

.visible-sm,
.visible-xs {
    display: none;
}

.logo {
    flex: 1 1 68%;
    padding: 28px 0;
}

.logo img,
.m-logo img {
    max-width: 100%;
    height: auto;
}

.right-top {
    justify-content: flex-end;
    width: 100%;
}

.contact {
    margin-bottom: 12px;
}

.contact p {
    margin: 0;
    color: #777;
    line-height: 1.35;
}

.contact p:first-child {
    font-size: 14px;
}

.contact span {
    color: #f10f0f;
    font-size: 26px;
    font-style: italic;
    font-weight: 700;
}

.right-top form {
    display: flex;
    width: 250px;
}

.right-top .inputBox {
    min-width: 0;
    flex: 1;
    border: 1px solid #4d8bf7;
    border-right: 0;
    padding: 8px 10px;
}

.right-top .submit {
    border: 1px solid #4d8bf7;
    background: #4d8bf7;
    color: #fff;
    cursor: pointer;
    padding: 0 15px;
}

.top_ewm {
    margin-left: 22px;
}

.top_ewm img {
    width: 118px;
    height: 118px;
    object-fit: cover;
}

.container_top_bg {
    background: #2f7fb9;
}

.navbar,
.navbar-default,
.my-nav {
    margin: 0;
    border: 0;
    background: transparent;
}

.container-fluid {
    width: 100%;
}

.navbar-header {
    display: none;
}

.navbar-nav {
    display: flex;
    justify-content: center;
    gap: clamp(18px, 4vw, 56px);
    margin: 0;
    padding: 0;
    list-style: none;
}

.navbar-nav > li {
    position: relative;
}

.navbar-nav > li > a {
    display: block;
    color: #fff;
    font-size: 26px;
    font-weight: 600;
    line-height: 80px;
}

.navbar-nav > li:hover > a {
    color: #e8f4ff;
}

.dropdown-menu {
    position: absolute;
    left: 50%;
    top: 100%;
    z-index: 20;
    display: none;
    min-width: 150px;
    margin: 0;
    padding: 8px 0;
    list-style: none;
    transform: translateX(-50%);
    background: #fff;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.16);
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu a {
    display: block;
    padding: 8px 18px;
    color: #1f2937;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background: #f1f5f9;
    color: #2f7fb9;
}

footer {
    margin-top: 54px;
}

.footer-top {
    background: #282d43;
    color: #fff;
    padding: 30px 0;
}

.footer-top .container > .row {
    align-items: flex-start;
}

.footer-top .left {
    flex: 1 1 52%;
}

.footer-top .right {
    flex: 1 1 42%;
}

.footer-top ul {
    flex: 1 1 33.333%;
    margin: 0;
    padding: 0 20px;
    list-style: none;
    border-right: 1px solid rgba(255,255,255,0.09);
}

.footer-top li {
    margin: 8px 0;
}

.footer-top li:first-child a {
    font-weight: 700;
}

.footer-top a {
    color: #fff;
}

.footer-top .right .row {
    justify-content: center;
}

.right-one,
.right-two {
    flex: 1 1 50%;
}

.right-one img {
    width: 164px;
    height: 164px;
    object-fit: cover;
}

.right-one p {
    margin: 8px 0 0;
    color: #b8c0d8;
}

.right-two {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.right-two .cell p {
    margin: 0;
}

.right-two .cell p:first-child span {
    color: #ff4b2f;
    font-size: 24px;
    font-weight: 700;
}

.right-two .cell:nth-child(2) p:first-child span {
    color: #fff;
}

.footer-bottom {
    background: #464d68;
    color: #fff;
    padding: 10px 16px;
    line-height: 1.65;
}

.footer-bottom a {
    color: #fff;
}

.footer-bottom p {
    margin: 0;
}

@media (max-width: 900px) {
    .hidden-sm,
    .hidden-xs,
    .top_ewm,
    .right-top.hidden-xs {
        display: none;
    }

    .visible-sm,
    .visible-xs {
        display: block;
    }

    .m-logo {
        padding: 18px 0;
    }

    .navbar-header {
        display: block;
        padding: 10px 0;
    }

    .navbar-toggle {
        border: 1px solid rgba(255,255,255,0.65);
        background: transparent;
        padding: 8px;
    }

    .icon-bar {
        display: block;
        width: 22px;
        height: 2px;
        margin: 4px 0;
        background: #fff;
    }

    .navbar-nav {
        justify-content: flex-start;
        gap: 22px;
        overflow-x: auto;
    }

    .navbar-nav > li > a {
        font-size: 18px;
        line-height: 52px;
    }

    .footer-top .left,
    .footer-top .right,
    .right-one,
    .right-two {
        flex-basis: 100%;
    }
}

@media (max-width: 640px) {
    .footer-top ul {
        flex-basis: 100%;
        margin-bottom: 18px;
        border-right: 0;
        padding: 0;
    }
}