* {
    box-sizing: border-box;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--page);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}

body.drawer-open {
    overflow: hidden;
}

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

img {
    max-width: 100%;
}

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

.container {
    width: min(1240px, calc(100% - 40px));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    top: 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 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 74px;
}

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

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

.nav-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    white-space: nowrap;
    flex-wrap: nowrap;
    min-width: 0;
}

.nav-core a {
    color: var(--text);
    padding: 10px 4px;
    position: relative;
    font-weight: 700;
    font-size: 15px;
}

.nav-core a:hover,
.nav-core a.active {
    color: var(--red);
}

.nav-core a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -10px;
    height: 3px;
    border-radius: 999px;
    background: var(--red);
}

.main-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 800;
    transition: transform .2s ease, box-shadow .2s ease;
}

.main-btn {
    background: linear-gradient(180deg, #F12B2B 0%, #C90000 55%, #A80000 100%);
    color: #FFFFFF;
    box-shadow: 0 8px 18px rgba(201, 0, 0, 0.22);
}

.main-btn:hover,
.secondary-btn:hover {
    transform: translateY(-2px);
}

.secondary-btn {
    color: var(--red);
    border: 1px solid var(--line);
    background: #FFFFFF;
}

.header-register {
    flex: 0 0 auto;
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: 12px;
    background: var(--soft);
    padding: 9px;
}

.menu-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    border-radius: 9px;
    background: var(--text);
}

.page-shell {
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 30px;
    align-items: start;
    padding-top: 26px;
    padding-bottom: 60px;
}

.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: var(--shadow);
    padding: 14px;
}

.side-title {
    margin: 4px 8px 10px;
    color: var(--red);
    font-size: 14px;
    font-weight: 800;
}

.side-category a {
    display: block;
    color: var(--text);
    border-radius: 12px;
    padding: 9px 12px;
    margin: 2px 0;
    font-size: 14px;
}

.side-category a:hover,
.side-category a.active {
    color: var(--red);
    background: var(--red-soft);
    font-weight: 800;
}

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

.page-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(280px, .88fr);
    gap: 28px;
    align-items: center;
    padding: 38px;
    border-radius: 26px;
    background: linear-gradient(135deg, #FFFFFF 0%, #F8F9FB 65%, #FCEEEE 100%);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    margin-bottom: 34px;
}

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

.eyebrow {
    display: inline-flex;
    margin-bottom: 10px;
    color: var(--red);
    font-weight: 900;
    letter-spacing: .08em;
}

.page-hero h1,
.section-title,
.card h2,
.card h3,
.zone-card h2,
.zone-card h3,
.info-card h2,
.info-card h3,
.review-card h3,
.faq-item h3 {
    color: var(--red);
}

.page-hero h1 {
    margin: 0 0 14px;
    font-size: clamp(30px, 4vw, 50px);
    line-height: 1.22;
}

.page-hero p {
    margin: 0 0 20px;
    color: var(--muted);
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-media {
    background: #FFFFFF;
    border-radius: 20px;
    padding: 14px;
    border: 1px solid rgba(201, 0, 0, .08);
}

.hero-media img,
.content-img {
    width: 100%;
    max-height: 280px;
    object-fit: contain;
    display: block;
    border-radius: 15px;
    background: #F7F8FA;
}

.banner-slider {
    max-width: 100%;
    margin: 0 0 34px;
    border-radius: 22px;
    background: #F7F8FA;
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
    min-height: 260px;
    height: clamp(260px, 30vw, 360px);
}

.banner-track,
.banner-slide {
    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-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #F7F8FA;
    display: block;
}

.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;
    border: 0;
    border-radius: 50%;
    background: rgba(17, 21, 28, .64);
    color: #FFFFFF;
    font-size: 25px;
    line-height: 1;
    transform: translateY(-50%);
    cursor: pointer;
}

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

.slider-dots {
    position: absolute;
    z-index: 4;
    left: 50%;
    bottom: 14px;
    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,.58);
    box-shadow: 0 0 0 1px rgba(0,0,0,.12);
    cursor: pointer;
}

.slider-dot.active {
    width: 24px;
    border-radius: 999px;
    background: #FFFFFF;
}

.section {
    margin: 34px 0;
}

.section-head {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: end;
    margin-bottom: 18px;
}

.section-title {
    margin: 0;
    font-size: clamp(24px, 3vw, 34px);
    line-height: 1.3;
}

.section-head p,
.section-intro {
    margin: 0;
    color: var(--muted);
    max-width: 720px;
}

.grid-2,
.grid-3,
.grid-4,
.quick-grid,
.info-grid,
.review-grid,
.faq-grid {
    display: grid;
    gap: 20px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.quick-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.info-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card,
.zone-card,
.info-card,
.review-card,
.faq-item {
    background: #FFFFFF;
    border: 1px solid rgba(201, 0, 0, 0.10);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}

.card,
.info-card,
.review-card,
.faq-item {
    padding: 24px;
}

.zone-card {
    overflow: hidden;
}

.zone-card .card-body {
    padding: 22px;
}

.card h2,
.card h3,
.zone-card h2,
.zone-card h3,
.info-card h2,
.info-card h3,
.review-card h3,
.faq-item h3 {
    margin-top: 0;
    margin-bottom: 10px;
    line-height: 1.4;
}

.card p,
.zone-card p,
.info-card p,
.review-card p,
.faq-item p {
    color: var(--muted);
    margin: 0 0 12px;
}

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

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

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--red);
    font-weight: 800;
}

.text-link::after {
    content: "→";
}

.notice-band {
    background: linear-gradient(135deg, #C90000 0%, #A80000 100%);
    color: #FFFFFF;
    border-radius: 22px;
    padding: 26px;
    box-shadow: 0 14px 34px rgba(201, 0, 0, .2);
}

.notice-band h2,
.notice-band h3,
.notice-band p {
    color: #FFFFFF;
}

.notice-band .info-card {
    box-shadow: none;
    border-color: rgba(255,255,255,.25);
    background: rgba(255,255,255,.10);
}

.split-section {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, .8fr);
    gap: 26px;
    align-items: center;
    padding: 30px;
    border-radius: 22px;
    background: var(--soft);
}

.check-list,
.plain-list {
    margin: 18px 0;
    padding: 0;
    list-style: none;
}

.check-list li,
.plain-list li {
    position: relative;
    padding: 8px 0 8px 28px;
    color: var(--muted);
}

.check-list li::before,
.plain-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: #FFFFFF;
    background: var(--red);
    font-size: 12px;
    font-weight: 900;
}

.tag-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.tag {
    display: inline-flex;
    padding: 6px 11px;
    border-radius: 999px;
    color: var(--red);
    background: var(--red-soft);
    font-size: 13px;
    font-weight: 800;
}

.steps {
    counter-reset: step;
}

.step {
    position: relative;
    padding-left: 58px;
}

.step::before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 20px;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    color: #FFFFFF;
    background: var(--red);
    font-weight: 900;
}

.review-card strong {
    display: block;
    margin-top: 14px;
    color: var(--text);
}

.faq-item {
    border-left: 4px solid var(--red);
}

.compliance-bar {
    background: var(--section);
    border-top: 1px solid rgba(201,0,0,.08);
    padding: 28px 0;
}

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

.compliance-grid div {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.compliance-grid strong {
    color: var(--red);
}

.compliance-grid span {
    color: var(--muted);
    font-size: 14px;
}

.site-footer {
    background: #11151C;
    color: #E7ECF3;
    padding: 44px 0 18px;
}

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

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

.site-footer h2 {
    margin: 0 0 14px;
    color: #FFFFFF;
    font-size: 17px;
}

.site-footer p,
.site-footer a {
    color: #BFC7D2;
    font-size: 14px;
}

.site-footer a {
    display: block;
    padding: 5px 0;
}

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

.footer-bottom {
    margin-top: 30px;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,.1);
}

.footer-bottom p {
    margin: 0;
}

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

@media (max-width: 1080px) {
    .container {
        width: min(100% - 28px, 1100px);
    }

    .page-shell {
        grid-template-columns: 180px minmax(0, 1fr);
        gap: 22px;
    }

    .nav-core {
        gap: 12px;
    }

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

    .grid-4,
    .info-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .nav-core,
    .side-category {
        display: none;
    }

    .menu-toggle {
        display: block;
        flex: 0 0 auto;
    }

    .header-inner {
        display: grid;
        grid-template-columns: 44px 1fr auto;
        gap: 12px;
        min-height: 66px;
    }

    .logo {
        justify-self: center;
    }

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

    .header-register {
        min-height: 38px;
        padding-inline: 18px;
    }

    .page-shell {
        display: block;
        padding-top: 18px;
    }

    .mobile-drawer {
        display: block;
        position: fixed;
        z-index: 1200;
        inset: 0 auto 0 0;
        width: min(84vw, 320px);
        background: #FFFFFF;
        transform: translateX(-104%);
        transition: transform .28s ease;
        box-shadow: 18px 0 40px rgba(17,21,28,.18);
        overflow-y: auto;
    }

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

    .drawer-overlay {
        position: fixed;
        display: block;
        z-index: 1150;
        inset: 0;
        opacity: 0;
        background: rgba(17,21,28,.45);
        transition: opacity .22s ease;
    }

    .drawer-overlay.show {
        opacity: 1;
    }

    .drawer-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 72px;
        padding: 12px 16px;
        border-bottom: 1px solid var(--line);
    }

    .drawer-logo img {
        max-height: 44px;
        width: auto;
        display: block;
    }

    .drawer-close {
        width: 38px;
        height: 38px;
        border: 0;
        border-radius: 50%;
        background: var(--soft);
        color: var(--text);
        font-size: 28px;
        line-height: 1;
    }

    .drawer-nav {
        padding: 12px;
    }

    .drawer-nav a {
        display: block;
        padding: 11px 14px;
        margin: 2px 0;
        border-radius: 11px;
        color: var(--text);
    }

    .drawer-nav a.active,
    .drawer-nav a:hover {
        color: var(--red);
        background: var(--red-soft);
        font-weight: 800;
    }

    .mobile-bottom-nav {
        position: fixed;
        z-index: 1050;
        left: 0;
        right: 0;
        bottom: 0;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        min-height: 62px;
        padding-bottom: env(safe-area-inset-bottom);
        background: rgba(255,255,255,.97);
        border-top: 1px solid rgba(201,0,0,.12);
        box-shadow: 0 -8px 24px rgba(18,28,45,.09);
    }

    .mobile-bottom-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        color: var(--muted);
        font-size: 12px;
    }

    .mobile-bottom-nav a span {
        font-size: 19px;
        line-height: 1;
    }

    .mobile-bottom-nav a.active {
        color: var(--red);
        font-weight: 800;
    }

    body {
        padding-bottom: calc(64px + env(safe-area-inset-bottom));
    }

    .page-hero,
    .split-section {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 680px) {
    .container {
        width: min(100% - 22px, 680px);
    }

    .page-shell {
        padding-bottom: 34px;
    }

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

    .slider-arrow {
        width: 36px;
        height: 36px;
        font-size: 22px;
    }

    .slider-arrow.prev { left: 9px; }
    .slider-arrow.next { right: 9px; }

    .page-hero {
        padding: 24px;
        border-radius: 20px;
    }

    .page-hero h1 {
        font-size: 31px;
    }

    .hero-media img,
    .content-img {
        max-height: 220px;
    }

    .grid-2,
    .grid-3,
    .grid-4,
    .quick-grid,
    .info-grid,
    .review-grid,
    .faq-grid,
    .footer-grid,
    .compliance-grid {
        grid-template-columns: 1fr;
    }

    .section {
        margin: 28px 0;
    }

    .section-head {
        align-items: start;
        flex-direction: column;
        gap: 8px;
    }

    .card,
    .info-card,
    .review-card,
    .faq-item {
        padding: 20px;
    }

    .split-section {
        padding: 22px;
    }

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

    .site-footer {
        padding-bottom: 26px;
    }
}

.drawer-overlay[hidden] {
    display: none !important;
}