* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #FFFFFF;
    color: #1F2329;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    padding-top: 82px;
    overflow-x: hidden;
}

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

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

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 2000;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(201,0,0,0.08);
}

.header-inner {
    max-width: 1380px;
    margin: 0 auto;
    min-height: 74px;
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

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

.nav-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    white-space: nowrap;
    flex-wrap: nowrap;
    min-width: 0;
}

.nav-core a {
    color: #1F2329;
    background: #F6F7F9;
    border-radius: 999px;
    padding: 10px 16px;
    font-size: 15px;
    transition: all .2s ease;
}

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

.register-btn,
.main-btn {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 22px;
    border-radius: 999px;
    background: linear-gradient(180deg, #F12B2B 0%, #C90000 55%, #A80000 100%);
    color: #FFFFFF;
    font-weight: 700;
    box-shadow: 0 10px 22px rgba(201,0,0,0.20);
    border: 0;
}

.ghost-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 20px;
    border-radius: 999px;
    color: #C90000;
    border: 1px solid rgba(201,0,0,0.20);
    background: rgba(201,0,0,0.04);
    font-weight: 700;
}

.menu-toggle {
    display: none;
    border: 0;
    background: #F6F7F9;
    color: #C90000;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    font-size: 24px;
    line-height: 1;
}

.layout-shell {
    width: min(1440px, calc(100% - 36px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 220px minmax(0, 1180px);
    gap: 28px;
    align-items: start;
}

.site-main {
    min-width: 0;
}

.side-category {
    position: sticky;
    top: 96px;
    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: 12px;
    max-height: calc(100vh - 118px);
    overflow: auto;
}

.side-category a {
    display: block;
    color: #1F2329;
    border-radius: 12px;
    padding: 9px 12px;
    margin: 2px 0;
    font-size: 14px;
    transition: all .2s ease;
}

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

.banner-slider {
    max-width: 1180px;
    margin: 24px auto 34px;
    border-radius: 22px;
    background: #F7F8FA;
    box-shadow: 0 12px 30px rgba(18,28,45,0.08);
    overflow: hidden;
    position: relative;
    height: clamp(260px, 30vw, 360px);
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity .45s ease;
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

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

.slider-prev,
.slider-next {
    position: absolute;
    top: 50%;
    z-index: 3;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.85);
    background: rgba(31,35,41,0.34);
    color: #FFFFFF;
    font-size: 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-prev {
    left: 14px;
}

.slider-next {
    right: 14px;
}

.slider-dots {
    position: absolute;
    bottom: 14px;
    left: 0;
    right: 0;
    z-index: 3;
    display: flex;
    justify-content: center;
    gap: 8px;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 99px;
    border: 0;
    background: rgba(255,255,255,0.74);
    cursor: pointer;
    padding: 0;
}

.slider-dot.active {
    width: 26px;
    background: #C90000;
}

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

.section {
    margin: 28px 0;
}

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #C90000;
    background: rgba(201,0,0,0.07);
    border-radius: 999px;
    padding: 6px 12px;
    font-weight: 700;
    font-size: 14px;
}

h1,
h2,
h3,
.section-title {
    color: #C90000;
    line-height: 1.28;
    margin: 0;
}

h1 {
    font-size: clamp(30px, 4vw, 52px);
    letter-spacing: -1px;
}

h2,
.section-title {
    font-size: clamp(24px, 2.6vw, 34px);
}

h3 {
    font-size: 20px;
}

p {
    margin: 0 0 12px;
    color: #5D6673;
}

.lead {
    color: #1F2329;
    font-size: 18px;
}

.muted {
    color: #8A93A0;
    font-size: 14px;
}

.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.notice-card,
.hero-panel {
    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,
.zone-card,
.info-card,
.review-card,
.faq-item,
.notice-card {
    padding: 20px;
}

.hero-panel {
    padding: clamp(24px, 4vw, 46px);
    overflow: hidden;
}

.hero-grid,
.split-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(280px, .95fr);
    gap: 28px;
    align-items: center;
}

.hero-actions,
.btn-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.stat-band {
    background: linear-gradient(135deg, #C90000 0%, #A80000 100%);
    border-radius: 22px;
    padding: 22px;
    color: #FFFFFF;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    box-shadow: 0 16px 34px rgba(201,0,0,0.20);
}

.stat-card {
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 16px;
    padding: 16px;
}

.stat-card strong {
    display: block;
    font-size: 20px;
    margin-bottom: 8px;
}

.stat-card p {
    color: rgba(255,255,255,0.88);
    font-size: 14px;
}

.zone-card,
.product-card {
    overflow: hidden;
}

.zone-card img,
.info-card img,
.content-img {
    width: 100%;
    max-height: 230px;
    object-fit: contain;
    background: #F7F8FA;
    border-radius: 14px;
    margin-bottom: 14px;
}

.hero-panel .content-img,
.split-grid .content-img {
    max-height: 285px;
}

.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;
    overflow: hidden;
}

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

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

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-list a,
.text-tag {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0 14px;
    border-radius: 999px;
    background: rgba(201,0,0,0.06);
    color: #C90000;
    border: 1px solid rgba(201,0,0,0.12);
    font-weight: 700;
}

.inline-list {
    padding-left: 18px;
    margin: 8px 0 0;
    color: #5D6673;
}

.inline-list li {
    margin: 6px 0;
}

.review-card p {
    color: #1F2329;
}

.review-card strong {
    color: #C90000;
}

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

.faq-item h3 {
    margin-bottom: 8px;
}

.notice-card {
    background: #F6F7F9;
}

.dark-reminder {
    background: #11151C;
    color: #E7ECF3;
    border-radius: 22px;
    padding: 26px;
    display: grid;
    gap: 10px;
}

.dark-reminder h2,
.dark-reminder h3 {
    color: #FFFFFF;
}

.dark-reminder p {
    color: #D7DEE8;
}

.site-footer {
    margin-top: 46px;
    background: #11151C;
    color: #E7ECF3;
}

.footer-inner {
    width: min(1180px, calc(100% - 36px));
    margin: 0 auto;
    padding: 42px 0;
    display: grid;
    grid-template-columns: 1.2fr .8fr 1fr;
    gap: 28px;
}

.footer-brand img {
    max-height: 52px;
    width: auto;
    margin-bottom: 14px;
}

.footer-inner p {
    color: #D7DEE8;
}

.footer-links {
    display: grid;
    gap: 10px;
    align-content: start;
}

.footer-links a {
    color: #E7ECF3;
    background: rgba(255,255,255,0.06);
    border-radius: 12px;
    padding: 10px 12px;
}

.drawer-mask {
    display: none;
}

.mobile-drawer {
    display: none;
}

.mobile-bottom-nav {
    display: none;
}

.drawer-open {
    overflow: hidden;
}

@media (max-width: 1180px) {
    .layout-shell {
        display: block;
        width: min(1180px, calc(100% - 32px));
    }

    .side-category {
        display: none;
    }

    .nav-core a {
        padding: 9px 13px;
    }
}

@media (max-width: 860px) {
    body {
        padding-top: 70px;
        padding-bottom: 72px;
    }

    .header-inner {
        min-height: 64px;
        padding: 0 14px;
        display: grid;
        grid-template-columns: 58px 1fr 78px;
        gap: 8px;
    }

    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-core {
        display: none;
    }

    .logo {
        justify-self: center;
    }

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

    .register-btn {
        justify-self: end;
        min-height: 38px;
        padding: 0 16px;
    }

    .layout-shell {
        width: min(100% - 24px, 760px);
    }

    .banner-slider {
        margin: 16px auto 24px;
        border-radius: 16px;
        height: clamp(150px, 48vw, 210px);
        min-height: 150px;
    }

    .slider-prev,
    .slider-next {
        width: 34px;
        height: 34px;
        font-size: 24px;
    }

    .section {
        margin: 22px 0;
    }

    .section-head {
        display: block;
    }

    .section-head .ghost-btn {
        margin-top: 12px;
    }

    .hero-panel {
        padding: 22px;
    }

    .hero-grid,
    .split-grid,
    .grid-2,
    .grid-3,
    .grid-4,
    .stat-band,
    .footer-inner {
        grid-template-columns: 1fr;
    }

    .zone-card img,
    .info-card img,
    .content-img {
        max-height: 210px;
    }

    .hero-panel .content-img,
    .split-grid .content-img {
        max-height: 230px;
    }

    .product-card img {
        height: 150px;
    }

    .drawer-mask {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(17,21,28,0.42);
        opacity: 0;
        visibility: hidden;
        z-index: 2400;
        transition: all .2s ease;
    }

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

    .mobile-drawer {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 84vw;
        max-width: 320px;
        height: 100vh;
        background: #FFFFFF;
        z-index: 2500;
        transform: translateX(-105%);
        transition: transform .25s ease;
        box-shadow: 16px 0 34px rgba(18,28,45,0.16);
        overflow-y: auto;
    }

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

    .drawer-head {
        min-height: 72px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 18px;
        border-bottom: 1px solid rgba(201,0,0,0.10);
    }

    .drawer-head img {
        max-height: 44px;
        width: auto;
    }

    .drawer-close {
        width: 40px;
        height: 40px;
        border: 0;
        border-radius: 12px;
        background: #F6F7F9;
        color: #C90000;
        font-size: 28px;
    }

    .drawer-nav {
        padding: 12px;
    }

    .drawer-nav a {
        display: block;
        border-radius: 12px;
        padding: 12px 14px;
        color: #1F2329;
    }

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

    .mobile-bottom-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 2100;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        background: #FFFFFF;
        border-top: 1px solid #E6E9EE;
        padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
    }

    .mobile-bottom-nav a {
        display: grid;
        place-items: center;
        gap: 2px;
        color: #5D6673;
        font-size: 12px;
    }

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

    .mobile-bottom-nav a.active {
        color: #C90000;
        font-weight: 700;
    }
}

@media (max-width: 520px) {
    h1 {
        font-size: 28px;
    }

    h2,
    .section-title {
        font-size: 22px;
    }

    .card,
    .zone-card,
    .info-card,
    .review-card,
    .faq-item,
    .notice-card {
        padding: 16px;
    }

    .stat-band {
        padding: 16px;
    }

    .tag-list a,
    .text-tag {
        width: 100%;
        justify-content: center;
    }
}