* {
    box-sizing: border-box;
}

:root {
    --red: #C90000;
    --red-dark: #A80000;
    --red-light: rgba(201, 0, 0, 0.08);
    --text: #1F2329;
    --muted: #5D6673;
    --soft: #8A93A0;
    --line: rgba(201, 0, 0, 0.12);
    --gray: #F6F7F9;
    --gray-2: #F1F3F6;
    --white: #FFFFFF;
    --footer: #11151C;
    --shadow: 0 12px 30px rgba(18, 28, 45, 0.08);
    --radius: 18px;
}

html {
    scroll-behavior: smooth;
    background: #FFFFFF;
}

body {
    margin: 0;
    min-width: 320px;
    background: #FFFFFF;
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.72;
    overflow-x: hidden;
}

body.drawer-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(201, 0, 0, 0.08);
}

.header-inner {
    width: min(1480px, calc(100% - 40px));
    min-height: 74px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(150px, 1fr) auto minmax(150px, 1fr);
    align-items: center;
    gap: 24px;
}

.logo {
    justify-self: start;
    display: inline-flex;
    align-items: center;
}

.logo img {
    width: auto;
    max-width: 168px;
    max-height: 52px;
}

.nav-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.nav-core a {
    color: #1F2329;
    background: #F6F7F9;
    border-radius: 999px;
    padding: 9px 15px;
    font-size: 15px;
    font-weight: 700;
    transition: .2s ease;
}

.nav-core a:hover,
.nav-core a.active {
    color: #C90000;
    background: rgba(201, 0, 0, 0.08);
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 22px;
    border-radius: 999px;
    background: linear-gradient(180deg, #F12B2B 0%, #C90000 55%, #A80000 100%);
    color: #FFFFFF;
    font-weight: 800;
    box-shadow: 0 8px 18px rgba(201, 0, 0, 0.2);
    transition: transform .2s ease, box-shadow .2s ease;
}

.main-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(201, 0, 0, 0.25);
}

.header-register {
    justify-self: end;
    white-space: nowrap;
}

.mobile-menu-button {
    display: none;
    width: 42px;
    height: 42px;
    padding: 10px;
    border: 0;
    border-radius: 12px;
    background: #F6F7F9;
    cursor: pointer;
}

.mobile-menu-button span {
    display: block;
    height: 2px;
    margin: 4px 0;
    background: #1F2329;
    border-radius: 2px;
}

.site-layout {
    width: min(1480px, calc(100% - 40px));
    margin: 0 auto;
    padding-top: 98px;
    display: grid;
    grid-template-columns: 218px minmax(0, 1fr);
    align-items: start;
    gap: 26px;
}

.site-main {
    width: 100%;
    min-width: 0;
    max-width: 1180px;
    margin: 0 auto;
}

.side-category {
    position: sticky;
    top: 96px;
    max-height: calc(100vh - 116px);
    overflow-y: auto;
    background: #FFFFFF;
    border: 1px solid rgba(201, 0, 0, 0.10);
    border-radius: 18px;
    box-shadow: 0 12px 30px rgba(18, 28, 45, 0.08);
    padding: 14px;
    scrollbar-width: thin;
}

.side-category-title {
    padding: 5px 10px 12px;
    color: #C90000;
    font-size: 14px;
    font-weight: 800;
}

.side-category nav {
    display: grid;
    gap: 4px;
}

.side-category a {
    color: #1F2329;
    border-radius: 12px;
    padding: 8px 10px;
    font-size: 14px;
    line-height: 1.35;
}

.side-category a:hover,
.side-category a.active {
    color: #C90000;
    background: rgba(201, 0, 0, 0.08);
    font-weight: 700;
}

.banner-slider {
    width: 100%;
    height: clamp(260px, 28vw, 360px);
    margin: 0 auto 34px;
    border-radius: 22px;
    background: #F7F8FA;
    box-shadow: 0 12px 30px rgba(18, 28, 45, 0.08);
    overflow: hidden;
    position: relative;
}

.banner-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.banner-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity .45s ease;
}

.banner-slide.active {
    opacity: 1;
    visibility: visible;
}

.banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #F7F8FA;
}

.banner-caption,
.banner-text,
.slide-title,
.slide-desc,
.slide-content,
.slide-card,
.banner-card {
    display: none !important;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 42px;
    height: 42px;
    transform: translateY(-50%);
    border: 0;
    border-radius: 50%;
    color: #FFFFFF;
    background: rgba(17, 21, 28, 0.55);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.slider-arrow.prev { left: 16px; }
.slider-arrow.next { right: 16px; }

.slider-dots {
    position: absolute;
    left: 50%;
    bottom: 14px;
    z-index: 3;
    display: flex;
    gap: 8px;
    transform: translateX(-50%);
}

.slider-dot {
    width: 9px;
    height: 9px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, .65);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, .15);
    cursor: pointer;
}

.slider-dot.active {
    width: 24px;
    border-radius: 99px;
    background: #C90000;
}

.section {
    margin: 0 0 34px;
}

.section-muted {
    padding: 30px;
    border-radius: 24px;
    background: #F6F7F9;
}

.section-head {
    margin-bottom: 20px;
}

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: #C90000;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}

.section-kicker::before {
    content: "";
    width: 24px;
    height: 3px;
    border-radius: 99px;
    background: #C90000;
}

h1,
h2,
h3,
.section-title {
    color: #C90000;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 18px;
    font-size: clamp(30px, 4vw, 50px);
    line-height: 1.18;
}

h2 {
    margin-bottom: 10px;
    font-size: clamp(24px, 3vw, 34px);
    line-height: 1.25;
}

h3 {
    margin-bottom: 8px;
    font-size: 20px;
    line-height: 1.35;
}

p {
    color: #5D6673;
}

.page-hero {
    min-height: 340px;
    margin-bottom: 34px;
    padding: 36px;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(300px, .92fr);
    align-items: center;
    gap: 34px;
    border: 1px solid rgba(201, 0, 0, 0.10);
    border-radius: 26px;
    background: linear-gradient(135deg, #FFFFFF 0%, #F7F8FA 100%);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.page-hero.no-image {
    grid-template-columns: 1fr;
    min-height: auto;
}

.page-hero p {
    max-width: 720px;
    font-size: 17px;
}

.page-hero figure {
    margin: 0;
    min-height: 240px;
    display: grid;
    place-items: center;
    border-radius: 20px;
    background: #F1F3F6;
    overflow: hidden;
}

.page-hero figure img {
    width: 100%;
    height: 280px;
    object-fit: contain;
}

.hero-actions,
.action-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.text-link {
    color: #C90000;
    font-weight: 800;
}

.intro-grid,
.feature-grid,
.card-grid,
.review-grid,
.quick-grid,
.product-grid,
.combination-grid {
    display: grid;
    gap: 18px;
}

.intro-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.quick-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.product-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.combination-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card,
.zone-card,
.info-card,
.review-card,
.quick-item,
.article-card,
.notice-card,
.faq-item,
.product-card {
    background: #FFFFFF;
    border: 1px solid rgba(201, 0, 0, 0.10);
    box-shadow: 0 12px 30px rgba(18, 28, 45, 0.08);
    border-radius: 18px;
}

.card,
.info-card,
.review-card,
.quick-item,
.article-card,
.notice-card,
.faq-item {
    padding: 22px;
}

.card p:last-child,
.info-card p:last-child,
.review-card p:last-child,
.quick-item p:last-child,
.article-card p:last-child,
.notice-card p:last-child,
.faq-item p:last-child {
    margin-bottom: 0;
}

.quick-item {
    box-shadow: none;
    transition: .2s ease;
}

.quick-item:hover {
    transform: translateY(-2px);
    border-color: rgba(201, 0, 0, .24);
    box-shadow: var(--shadow);
}

.quick-item h3 {
    font-size: 18px;
}

.quick-item a {
    color: #C90000;
    font-size: 14px;
    font-weight: 800;
}

.service-summary {
    margin-bottom: 34px;
    padding: 24px;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    border-radius: 22px;
    background: linear-gradient(135deg, #C90000, #A80000);
    color: #FFFFFF;
}

.service-summary article {
    padding: 10px 14px;
    border-left: 1px solid rgba(255, 255, 255, .25);
}

.service-summary article:first-child {
    border-left: 0;
}

.service-summary h2 {
    color: #FFFFFF;
    font-size: 18px;
}

.service-summary p {
    margin-bottom: 0;
    color: rgba(255, 255, 255, .84);
    font-size: 14px;
}

.media-split {
    display: grid;
    grid-template-columns: minmax(300px, .9fr) minmax(0, 1.1fr);
    align-items: center;
    gap: 28px;
}

.media-split.reverse {
    grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr);
}

.media-split.reverse .media-frame {
    order: 2;
}

.media-frame {
    min-height: 230px;
    display: grid;
    place-items: center;
    border-radius: 20px;
    background: #F1F3F6;
    overflow: hidden;
}

.media-frame img,
.zone-card img,
.info-card img,
.content-img {
    width: 100%;
    height: auto;
    max-height: 230px;
    object-fit: contain;
}

.media-frame img {
    height: 260px;
    max-height: 260px;
}

.product-card {
    overflow: hidden;
}

.product-card img {
    width: 100%;
    height: 170px;
    object-fit: contain;
    background: #F7F8FA;
}

.product-card-body {
    padding: 18px;
}

.product-card-body p {
    font-size: 14px;
}

.horizontal-products {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(220px, 1fr);
    gap: 16px;
    padding: 4px 2px 16px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
}

.horizontal-products .product-card {
    scroll-snap-align: start;
}

.number-list,
.check-list,
.link-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.number-list {
    counter-reset: guide;
    display: grid;
    gap: 14px;
}

.number-list li {
    position: relative;
    padding: 16px 18px 16px 58px;
    border: 1px solid rgba(201, 0, 0, .1);
    border-radius: 16px;
    background: #FFFFFF;
    color: #5D6673;
}

.number-list li::before {
    counter-increment: guide;
    content: counter(guide, decimal-leading-zero);
    position: absolute;
    left: 16px;
    top: 15px;
    color: #C90000;
    font-weight: 900;
}

.check-list {
    display: grid;
    gap: 10px;
}

.check-list li {
    position: relative;
    padding-left: 26px;
    color: #5D6673;
}

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #C90000;
    font-weight: 900;
}

.two-column-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
    gap: 20px;
}

.notice-card {
    background: linear-gradient(160deg, #FFFFFF, #F6F7F9);
}

.tag {
    display: inline-flex;
    margin-bottom: 12px;
    padding: 5px 10px;
    border-radius: 999px;
    color: #C90000;
    background: rgba(201, 0, 0, .08);
    font-size: 13px;
    font-weight: 800;
}

.review-card::before {
    content: "“";
    display: block;
    height: 30px;
    color: rgba(201, 0, 0, .25);
    font: 700 48px/1 Georgia, serif;
}

.review-card footer {
    margin-top: 14px;
    color: #8A93A0;
    font-size: 13px;
}

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-item h3 {
    font-size: 18px;
}

.compliance-box {
    margin-bottom: 34px;
    padding: 24px 26px;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 18px;
    align-items: start;
    border: 1px solid rgba(201, 0, 0, .15);
    border-radius: 20px;
    background: #FFF8F8;
}

.compliance-mark {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #FFFFFF;
    background: #C90000;
    font-weight: 900;
}

.compliance-box h2 {
    font-size: 22px;
}

.global-reminder {
    width: min(1480px, calc(100% - 40px));
    margin: 18px auto 0;
    padding: 22px 26px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    border-radius: 18px 18px 0 0;
    background: #F1F3F6;
}

.global-reminder strong {
    display: block;
    margin-bottom: 4px;
    color: #C90000;
}

.global-reminder p {
    margin: 0;
    font-size: 14px;
}

.global-reminder a {
    flex: 0 0 auto;
    color: #C90000;
    font-weight: 800;
}

.site-footer {
    margin-top: 0;
    padding: 48px max(20px, calc((100vw - 1480px) / 2 + 20px)) 24px;
    background: #11151C;
    color: #E7ECF3;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 34px;
}

.footer-brand p {
    max-width: 420px;
    color: #AEB8C7;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    min-height: 58px;
    padding: 4px 10px;
    border-radius: 12px;
    background: #FFFFFF;
}

.footer-logo img {
    width: auto;
    max-width: 150px;
    max-height: 46px;
}

.site-footer h2 {
    margin-bottom: 14px;
    color: #FFFFFF;
    font-size: 17px;
}

.site-footer a:not(.footer-logo) {
    display: block;
    margin: 8px 0;
    color: #C6CED9;
    font-size: 14px;
}

.site-footer a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    margin-top: 34px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    border-top: 1px solid rgba(255, 255, 255, .1);
    color: #8E99A8;
    font-size: 13px;
}

.drawer-overlay,
.mobile-drawer,
.mobile-bottom-nav {
    display: none;
}

@media (max-width: 1280px) {
    .header-inner,
    .site-layout,
    .global-reminder {
        width: min(1180px, calc(100% - 32px));
    }

    .site-layout {
        grid-template-columns: 200px minmax(0, 1fr);
        gap: 20px;
    }

    .nav-core a {
        padding: 8px 12px;
        font-size: 14px;
    }
}

@media (max-width: 1100px) {
    .site-layout {
        display: block;
    }

    .side-category {
        display: none;
    }

    .site-main {
        max-width: 100%;
    }

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

@media (max-width: 860px) {
    .header-inner {
        grid-template-columns: 42px minmax(0, 1fr) auto;
        min-height: 66px;
        gap: 12px;
    }

    .mobile-menu-button {
        display: block;
    }

    .logo {
        justify-self: center;
    }

    .logo img {
        max-width: 132px;
        max-height: 44px;
    }

    .nav-core {
        display: none;
    }

    .header-register {
        min-height: 38px;
        padding: 8px 16px;
        font-size: 14px;
    }

    .site-layout {
        padding-top: 84px;
    }

    .page-hero,
    .media-split,
    .media-split.reverse,
    .two-column-panel {
        grid-template-columns: 1fr;
    }

    .media-split.reverse .media-frame {
        order: 0;
    }

    .page-hero {
        padding: 28px;
    }

    .page-hero figure img {
        height: 230px;
    }

    .feature-grid,
    .card-grid,
    .quick-grid,
    .combination-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .service-summary article:nth-child(3) {
        border-left: 0;
    }

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

    .drawer-overlay {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 1100;
        background: rgba(17, 21, 28, .46);
        opacity: 0;
        visibility: hidden;
        transition: .25s ease;
    }

    .mobile-drawer {
        display: flex;
        position: fixed;
        inset: 0 auto 0 0;
        z-index: 1200;
        width: min(84vw, 320px);
        flex-direction: column;
        background: #FFFFFF;
        transform: translateX(-102%);
        transition: transform .25s ease;
        box-shadow: 20px 0 45px rgba(17, 21, 28, .16);
    }

    .drawer-open .drawer-overlay {
        opacity: 1;
        visibility: visible;
    }

    .drawer-open .mobile-drawer {
        transform: translateX(0);
    }

    .drawer-head {
        min-height: 72px;
        padding: 10px 14px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-bottom: 1px solid #ECEFF3;
    }

    .drawer-logo img {
        width: auto;
        max-width: 138px;
        max-height: 46px;
    }

    .drawer-close {
        width: 40px;
        height: 40px;
        border: 0;
        border-radius: 12px;
        color: #1F2329;
        background: #F6F7F9;
        font-size: 28px;
        cursor: pointer;
    }

    .drawer-nav {
        padding: 12px;
        display: grid;
        gap: 4px;
        overflow-y: auto;
    }

    .drawer-nav a {
        padding: 11px 13px;
        border-radius: 12px;
        color: #1F2329;
        font-size: 15px;
    }

    .drawer-nav a.active,
    .drawer-nav a:hover {
        color: #C90000;
        background: rgba(201, 0, 0, .08);
        font-weight: 800;
    }
}

@media (max-width: 640px) {
    body {
        padding-bottom: 68px;
    }

    .header-inner,
    .site-layout,
    .global-reminder {
        width: min(100% - 24px, 1180px);
    }

    .banner-slider {
        height: clamp(150px, 49vw, 210px);
        margin-bottom: 24px;
        border-radius: 16px;
    }

    .slider-arrow {
        width: 34px;
        height: 34px;
        font-size: 23px;
    }

    .slider-arrow.prev { left: 8px; }
    .slider-arrow.next { right: 8px; }

    .slider-dots {
        bottom: 9px;
    }

    .page-hero {
        min-height: auto;
        margin-bottom: 24px;
        padding: 22px;
        border-radius: 20px;
    }

    h1 {
        font-size: 30px;
    }

    h2 {
        font-size: 24px;
    }

    .page-hero p {
        font-size: 15px;
    }

    .page-hero figure {
        min-height: 170px;
    }

    .page-hero figure img {
        height: 190px;
    }

    .section {
        margin-bottom: 26px;
    }

    .section-muted {
        padding: 20px;
        border-radius: 20px;
    }

    .intro-grid,
    .feature-grid,
    .card-grid,
    .review-grid,
    .quick-grid,
    .product-grid,
    .combination-grid,
    .service-summary,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .service-summary article,
    .service-summary article:nth-child(3) {
        border-left: 0;
        border-top: 1px solid rgba(255, 255, 255, .22);
    }

    .service-summary article:first-child {
        border-top: 0;
    }

    .media-frame {
        min-height: 170px;
    }

    .media-frame img,
    .zone-card img,
    .info-card img,
    .content-img {
        max-height: 190px;
    }

    .media-frame img {
        height: 190px;
    }

    .product-card img {
        height: 145px;
    }

    .horizontal-products {
        grid-auto-columns: minmax(190px, 78vw);
    }

    .card,
    .info-card,
    .review-card,
    .quick-item,
    .article-card,
    .notice-card,
    .faq-item {
        padding: 18px;
    }

    .compliance-box {
        grid-template-columns: 1fr;
    }

    .global-reminder {
        flex-direction: column;
        align-items: flex-start;
        border-radius: 16px 16px 0 0;
    }

    .site-footer {
        padding-bottom: 86px;
    }

    .footer-bottom {
        flex-direction: column;
    }

    .mobile-bottom-nav {
        position: fixed;
        inset: auto 0 0 0;
        z-index: 1050;
        height: 64px;
        padding: 5px max(10px, env(safe-area-inset-right)) max(5px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        background: rgba(255, 255, 255, .98);
        border-top: 1px solid #E5E8ED;
        box-shadow: 0 -8px 24px rgba(18, 28, 45, .08);
    }

    .mobile-bottom-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 1px;
        color: #6F7885;
        font-size: 12px;
        line-height: 1.2;
    }

    .mobile-bottom-nav a span {
        font-size: 18px;
        line-height: 1;
    }

    .mobile-bottom-nav a.active {
        color: #C90000;
        font-weight: 800;
    }
}