:root {
    --city-blue: #0867f2;
    --city-blue-dark: #052f72;
    --city-ink: #102a4c;
    --city-muted: #6d7f96;
    --city-line: #dfe7f2;
    --city-soft: #f4f8fd;
}

body {
    color: var(--city-ink);
    background: #fff;
}

.city-page .header .scroll-open,
.city-page .header .scroll-fixed,
.city-page .header .menu-open {
    background-color: rgb(0, 93, 255) !important;
    box-shadow: 0 6px 20px rgba(4, 45, 110, 0.14);
    backdrop-filter: blur(14px);
}

.city-page .header .header-bg {
    transition: background-color 0.22s ease, box-shadow 0.22s ease;
}

.city-page .footer {
    margin-top: 0;
}

.city-hero {
    position: relative;
    min-height: 480px;
    overflow: hidden;
    background-color: #0867f2;
    background-image: url('../images/banner.png');
    background-position: center;
    background-size: cover;
    color: #fff;
}

.city-hero::after {
    position: absolute;
    right: -9%;
    bottom: -42%;
    width: 560px;
    height: 560px;
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 50%;
    content: '';
}

.city-hero-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    min-height: 480px;
    padding-top: 140px;
    padding-bottom: 72px;
}

.city-hero-copy {
    max-width: 770px;
    animation: city-rise 0.65s ease-out both;
}

.city-eyebrow,
.city-kicker {
    display: inline-block;
    margin-bottom: 16px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.city-eyebrow {
    color: rgba(255, 255, 255, 0.72);
}

.city-kicker {
    color: var(--city-blue);
}

.city-hero h1 {
    max-width: 820px;
    margin: 0;
    font-size: clamp(36px, 3.2vw, 54px);
    font-weight: 750;
    line-height: 1.16;
    letter-spacing: -0.03em;
    text-shadow: 0 2px 10px rgba(0, 55, 145, 0.14);
}

.city-hub-hero h1 {
    max-width: 720px;
    font-size: clamp(34px, 2.65vw, 46px);
    line-height: 1.18;
}

.city-detail-hero h1 {
    max-width: 760px;
    font-size: clamp(34px, 2.7vw, 46px);
    line-height: 1.18;
}

.city-hero-copy > p {
    max-width: 720px;
    margin: 24px 0 0;
    color: rgba(255, 255, 255, 0.84);
    font-size: 17px;
    line-height: 1.9;
}

.city-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.city-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 24px;
    border: 1px solid transparent;
    border-radius: 5px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.city-btn:hover {
    transform: translateY(-2px);
}

.city-btn-primary {
    border-color: #fff;
    background: #fff;
    color: var(--city-blue);
}

.city-btn-primary:hover {
    background: #eef5ff;
    color: #0358cf;
}

.city-btn-ghost {
    border-color: rgba(255, 255, 255, 0.44);
    color: #fff;
}

.city-btn-ghost:hover {
    border-color: #fff;
    color: #fff;
}

.city-hero-tip {
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 720px;
    margin-top: 20px;
}

.city-hero-tip-label {
    flex: 0 0 auto;
    padding: 5px 10px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.city-hero-tip p {
    display: flex;
    align-items: baseline;
    gap: 9px;
    margin: 0;
    min-width: 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 13px;
    line-height: 1.65;
}

.city-hero-tip strong {
    flex: 0 0 auto;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
}

.city-hero-tip p span {
    min-width: 0;
}

.city-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    line-height: 1;
}

.city-breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.city-breadcrumb a:hover,
.city-breadcrumb [aria-current="page"] {
    color: #fff;
}

.city-section {
    padding: 88px 0;
}

.city-directory-section,
.city-products-section,
.city-related-section {
    background: var(--city-soft);
}

.city-section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 42px;
}

.city-section-heading h2,
.city-faq-heading h2,
.city-final-cta h2 {
    margin: 0;
    color: var(--city-ink);
    font-size: 28px;
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: 0;
}

.city-section-heading > p {
    max-width: 500px;
    margin: 0;
    color: var(--city-muted);
    line-height: 1.75;
}

.city-directory {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid #bfcde0;
}

.city-directory-item {
    position: relative;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 38px;
    grid-template-rows: auto 1fr;
    column-gap: 16px;
    min-height: 168px;
    padding: 28px 28px 26px 0;
    border-bottom: 1px solid var(--city-line);
    color: var(--city-ink);
    text-decoration: none;
    transition: background-color 0.22s ease, color 0.22s ease;
}

.city-directory-item:nth-child(even) {
    padding-right: 0;
    padding-left: 32px;
    border-left: 1px solid var(--city-line);
}

.city-directory-item:hover {
    background: linear-gradient(90deg, rgba(8, 103, 242, 0.045), rgba(8, 103, 242, 0));
    color: var(--city-ink);
}

.city-directory-number {
    grid-row: 1 / 3;
    padding-top: 4px;
    color: #8fa1b9;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.city-directory-main {
    grid-column: 2;
}

.city-directory-main strong,
.city-directory-main small {
    display: block;
}

.city-directory-main strong {
    font-size: 22px;
    font-weight: 600;
    line-height: 1.15;
    transition: color 0.22s ease;
}

.city-directory-main small {
    margin-top: 6px;
    color: var(--city-muted);
    font-size: 13px;
}

.city-directory-summary {
    grid-column: 2;
    align-self: end;
    margin-top: 18px;
    color: var(--city-muted);
    font-size: 14px;
    line-height: 1.7;
}

.city-directory-arrow {
    display: inline-flex;
    grid-column: 3;
    grid-row: 1 / 3;
    align-items: center;
    align-self: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--city-blue);
    font-size: 17px;
    transition: color 0.22s ease, transform 0.22s ease;
}

.city-directory-item:hover .city-directory-main strong {
    color: var(--city-blue);
}

.city-directory-item:hover .city-directory-arrow {
    transform: translate(2px, -2px);
}

.city-method-section {
    background: #fff;
}

.city-method-heading {
    max-width: 920px;
    margin-bottom: 64px;
}

.city-method-heading .city-kicker {
    margin-bottom: 20px;
}

.city-method-heading h2 {
    max-width: 900px;
    margin: 0;
    color: var(--city-ink);
    font-size: 28px;
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: 0;
}

.city-method-heading p {
    max-width: 760px;
    margin: 26px 0 0;
    color: var(--city-muted);
    font-size: 17px;
    line-height: 1.9;
}

.city-method-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    position: relative;
    border-top: 2px solid #a9c9f9;
}

.city-method-grid article {
    position: relative;
    min-height: 238px;
    padding: 44px 42px 18px 0;
}

.city-method-grid article::before {
    position: absolute;
    top: -6px;
    left: 0;
    width: 10px;
    height: 10px;
    border: 2px solid #fff;
    border-radius: 50%;
    background: var(--city-blue);
    box-shadow: 0 0 0 2px var(--city-blue);
    content: '';
}

.city-method-grid article + article {
    padding-left: 42px;
    border-left: 1px solid var(--city-line);
}

.city-method-grid article + article::before {
    left: 42px;
}

.city-method-grid span {
    display: inline-block;
    color: var(--city-blue);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.16em;
}

.city-method-grid h3 {
    margin: 24px 0 16px;
    color: var(--city-ink);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.35;
}

.city-method-grid p {
    max-width: 340px;
    margin: 0;
    color: var(--city-muted);
    font-size: 15px;
    line-height: 1.9;
}

.city-final-cta {
    padding: 64px 0;
    background: var(--city-soft);
}

.city-final-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.city-final-cta .city-btn-primary {
    border-color: var(--city-blue);
    background: var(--city-blue);
    color: #fff;
}

.city-reading-label {
    display: block;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--city-line);
}

.city-reading-label span,
.city-reading-label strong {
    display: block;
}

.city-reading-label span {
    color: var(--city-blue);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.16em;
    margin-bottom: 12px;
}

.city-reading-label strong {
    margin-top: 0;
    color: var(--city-ink);
    font-size: 28px;
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: 0;
}

.city-lead {
    max-width: none;
    margin: 0 0 32px;
    padding: 0;
    border: 0;
    color: #344d69;
    font-size: 18px;
    line-height: 1.85;
}

.city-editor-content {
    max-width: none;
}

.city-editor-content h2 {
    margin: 34px 0 12px;
    color: var(--city-ink);
    font-size: 22px;
    font-weight: 600;
    line-height: 1.45;
    letter-spacing: 0;
}

.city-editor-content h2:first-child {
    margin-top: 0;
}

.city-editor-content h3 {
    margin: 28px 0 10px;
    color: var(--city-ink);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
}

.city-editor-content p,
.city-editor-content li {
    color: #51677f;
    font-size: 16px;
    line-height: 1.9;
}

.city-product-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.city-product-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 570px;
    padding: 28px 10px 0;
    overflow: hidden;
    border: 1px solid #fff;
    border-radius: 5px;
    background: #f2f8fd url('../images/product-bg.png') no-repeat right top / 100% auto;
    box-shadow: 1px 1px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.city-product-card:hover {
    transform: translateY(-4px);
    border-color: #fff;
    box-shadow: 0 0 10px 4px #cdd1d8;
}

.city-product-topline {
    display: flex;
    align-items: center;
    min-height: 34px;
    color: #6f8299;
    font-size: 12px;
    font-weight: 600;
}

.city-product-sale {
    position: absolute;
    top: 0;
    right: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 110px;
    height: 34px;
    padding-left: 15px;
    background: url('../images/product-sale.png') no-repeat center / 100% 100%;
    color: #fff;
    font-size: 14px;
    font-style: normal;
    text-align: center;
}

.city-product-card h3 {
    margin: 10px 0 0;
    font-size: 20px;
    font-weight: 700;
}

.city-product-remark {
    min-height: 40px;
    margin: 10px 0 0;
    color: #8090a3;
    font-size: 14px;
    line-height: 1.65;
}

.city-product-card dl {
    margin: 0;
    padding: 15px 0;
    border-top: 1px solid var(--city-line);
    border-bottom: 1px solid var(--city-line);
}

.city-product-card dl div {
    display: flex;
    padding: 10px 0;
}

.city-product-card dt {
    color: #8a99aa;
    font-size: 16px;
    font-weight: 400;
    flex: 0 0 40%;
    white-space: nowrap;
}

.city-product-card dd {
    margin: 0;
    color: #213c5d;
    font-size: 16px;
    font-weight: 600;
    flex: 0 0 60%;
    overflow: hidden;
    text-align: left;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.city-product-tags {
    display: flex;
    align-items: center;
    min-height: 31px;
    margin: 20px 0;
}

.city-product-tags span {
    margin: 0 6px;
    padding: 5px 10px;
    border-radius: 5px;
    background: #f9f2ed;
    color: #e91b1b;
    font-size: 14px;
    white-space: nowrap;
}

.city-product-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 10px 0 8px;
    flex-wrap: wrap;
}

.city-product-price strong {
    color: #f12626;
    font-size: 32px;
}

.city-product-price span {
    color: #8291a3;
    font-size: 14px;
}

.city-product-price del {
    flex-basis: 100%;
    color: #9aa7b6;
    font-size: 14px;
}

.city-product-periods {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: auto;
    padding: 10px 0 18px;
    color: #8291a3;
    font-size: 14px;
}

.city-product-periods strong {
    color: #213c5d;
    font-size: 16px;
}

.city-product-buy {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 50px;
    margin: 0 -10px;
    padding: 14px 20px;
    background: linear-gradient(135deg, #0096ff, #005dff);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
}

.city-product-buy:hover {
    background: linear-gradient(135deg, #25a5ff, #197bff);
    color: #fff;
}

.city-faq-layout {
    display: grid;
    grid-template-columns: minmax(260px, 0.9fr) minmax(0, 1.6fr);
    gap: 88px;
}

.city-faq-heading p {
    margin-top: 22px;
    color: var(--city-muted);
    line-height: 1.8;
}

.city-faq .accordion-item {
    border: 0;
    border-bottom: 1px solid var(--city-line);
    border-radius: 0;
}

.city-faq .accordion-button {
    padding: 24px 4px;
    color: var(--city-ink);
    font-size: 17px;
    font-weight: 600;
    box-shadow: none;
}

.city-faq .accordion-button:not(.collapsed) {
    background: #fff;
    color: var(--city-blue);
}

.city-faq .accordion-body {
    padding: 0 44px 26px 4px;
    color: #5c7189;
    line-height: 1.85;
}

.city-related-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid #c6d2e1;
    border-left: 1px solid var(--city-line);
}

.city-related-list a {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 24px;
    grid-template-rows: auto 1fr;
    align-content: start;
    gap: 18px 12px;
    min-height: 166px;
    padding: 26px 24px 24px;
    border-right: 1px solid var(--city-line);
    border-bottom: 1px solid var(--city-line);
    background: rgb(255 255 255 / 48%);
    color: var(--city-ink);
    text-decoration: none;
    transition: background-color 180ms ease, transform 180ms ease;
}

.city-related-list a:hover {
    background: #fff;
    transform: translateY(-3px);
}

.city-related-list strong {
    font-size: 22px;
    line-height: 1.3;
}

.city-related-list span {
    grid-column: 1 / -1;
    color: var(--city-muted);
    font-size: 15px;
    line-height: 1.75;
}

.city-related-list i {
    grid-row: 1;
    grid-column: 2;
    justify-self: end;
    font-size: 17px;
    transition: transform 180ms ease;
}

.city-related-list a:hover i {
    transform: translate(3px, -3px);
}

.city-related-list i,
.city-text-link {
    color: var(--city-blue);
}

.city-text-link {
    text-decoration: none;
}

.city-empty {
    padding: 54px;
    border: 1px dashed #b9c8da;
    color: var(--city-muted);
    text-align: center;
}

@keyframes city-rise {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (min-width: 1200px) and (max-width: 1399.98px) {
    .header .header-bg .navbar-brand {
        margin-right: 12px;
    }

    .header .header-bg .navbar-brand img {
        width: 130px;
    }

    .header .header-bg .navbar-nav .nav-item {
        padding-right: 7px;
        padding-left: 7px;
        white-space: nowrap;
    }

    .header .header-bg .navbar-nav .nav-item .nav-link {
        font-size: 14px;
    }

}

.city-reading-label small {
    display: block;
    margin-top: 12px;
    color: var(--city-muted);
    font-size: 12px;
    line-height: 1.6;
}

.city-topic-section {
    background: #fff;
}

.city-detail-topic-section {
    padding-top: 16px;
}

.city-topic-directory {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 1px solid var(--city-line);
    border-bottom: 1px solid var(--city-line);
}

.city-topic-directory a {
    position: relative;
    display: flex;
    min-height: 142px;
    padding: 30px 50px 30px 26px;
    color: var(--city-ink);
    flex-direction: column;
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.city-topic-directory a + a {
    border-left: 1px solid var(--city-line);
}

.city-topic-directory a:hover {
    background: var(--city-soft);
}

.city-topic-directory strong {
    font-size: 19px;
    font-weight: 700;
}

.city-topic-directory span {
    margin-top: 10px;
    color: var(--city-muted);
    font-size: 13px;
    line-height: 1.7;
}

.city-topic-directory i {
    position: absolute;
    top: 33px;
    right: 24px;
    color: var(--city-blue);
    transition: transform 0.2s ease;
}

.city-topic-directory a:hover i {
    transform: translate(3px, -3px);
}

@media (max-width: 1199px) {
    .city-product-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .city-related-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

}

@media (max-width: 991px) {
    .city-topic-directory {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .city-topic-directory a:nth-child(3),
    .city-topic-directory a:nth-child(4) {
        border-top: 1px solid var(--city-line);
    }

    .city-topic-directory a:nth-child(3) {
        border-left: 0;
    }

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

    .city-hero,
    .city-hero-inner {
        min-height: 540px;
    }

    .city-hero-inner {
        display: block;
        padding-top: 150px;
    }

    .city-faq-layout {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .city-method-grid {
        grid-template-columns: 1fr;
        border-top: 0;
        border-left: 2px solid #a9c9f9;
    }

    .city-method-grid article,
    .city-method-grid article + article {
        min-height: 0;
        padding: 0 0 36px 34px;
        border-left: 0;
        border-right: 0;
        border-bottom: 0;
    }

    .city-method-grid article + article {
        padding-top: 8px;
    }

    .city-method-grid article::before,
    .city-method-grid article + article::before {
        top: 4px;
        left: -6px;
    }

    .city-method-grid article + article::before {
        top: 12px;
    }

    .city-method-grid h3 {
        margin-top: 16px;
    }
}

@media (max-width: 767px) {
    .city-section {
        padding: 62px 0;
    }

    .city-method-heading {
        margin-bottom: 46px;
    }

    .city-method-heading h2 {
        font-size: 28px;
    }

    .city-method-heading p {
        font-size: 15px;
    }

    .city-hero h1 {
        font-size: 36px;
    }

    .city-hero-copy > p {
        font-size: 15px;
    }

    .city-section-heading,
    .city-final-cta-inner {
        display: block;
    }

    .city-section-heading > p {
        margin-top: 18px;
    }

    .city-directory {
        grid-template-columns: 1fr;
    }

    .city-directory-item,
    .city-directory-item:nth-child(even) {
        grid-template-columns: 38px minmax(0, 1fr) 32px;
        min-height: 148px;
        padding: 24px 0;
        border-left: 0;
    }

    .city-directory-summary {
        margin-top: 14px;
    }

    .city-related-list {
        grid-template-columns: 1fr;
    }

    .city-related-list a {
        min-height: 0;
        padding: 22px 20px;
    }

    .city-final-cta .city-btn {
        margin-top: 26px;
    }
}

@media (max-width: 575px) {
    .city-topic-directory {
        grid-template-columns: 1fr;
    }

    .city-topic-directory a + a,
    .city-topic-directory a:nth-child(3),
    .city-topic-directory a:nth-child(4) {
        min-height: 120px;
        border-top: 1px solid var(--city-line);
        border-left: 0;
    }

    .city-product-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 479px) {
    .city-hero-actions .city-btn {
        width: 100%;
    }

}

@media (prefers-reduced-motion: reduce) {
    .city-hero-copy,
    .city-product-card,
    .city-directory-item,
    .city-btn {
        animation: none;
        transition: none;
    }
}