* {
    box-sizing: border-box;
}
html {
    -webkit-text-size-adjust: 100%;
}
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    color: #222;
    background: #f6f6f6;
    line-height: 1.75;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    display: block;
}
.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}
.site-header {
    position: relative;
    z-index: 20;
}
.mobile-header {
    height: 64px;
    display: grid;
    grid-template-columns: 64px 1fr 86px;
    align-items: center;
    background: #fff;
    border-bottom: 3px solid rgb(180, 4, 4);
    padding: 0 10px;
}
.menu-button {
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    padding: 10px;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
}
.menu-button span {
    height: 2px;
    width: 24px;
    border-radius: 4px;
    background: #161616;
    transition: transform .25s ease, opacity .25s ease;
}
.menu-button.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-button.is-open span:nth-child(2) {
    opacity: 0;
}
.menu-button.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
.mobile-logo {
    justify-self: center;
}
.mobile-logo img,
.desktop-logo img {
    height: 38px;
    width: auto;
    object-fit: contain;
}
.top-action,
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgb(213, 5, 5);
    color: #fff;
    border-radius: 999px;
    font-weight: 700;
    border: 0;
    min-height: 40px;
    padding: 0 18px;
    box-shadow: 0 8px 18px rgba(213, 5, 5, .18);
    transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.top-action:hover,
.main-btn:hover {
    background: rgb(180, 4, 4);
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(180, 4, 4, .22);
}
.mobile-nav {
    display: none;
    background: #fff;
    border-bottom: 1px solid #eee;
    box-shadow: 0 12px 22px rgba(0,0,0,.06);
}
.mobile-nav.open {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    padding: 12px 16px 16px;
}
.mobile-nav a {
    padding: 12px;
    border-radius: 12px;
    background: #f8f8f8;
    font-size: 14px;
    color: #333;
}
.mobile-nav a.active {
    color: rgb(213, 5, 5);
    background: #fff1f1;
    font-weight: 700;
}
.desktop-header {
    display: none;
}
main {
    overflow: hidden;
}
.section {
    padding: 54px 0;
}
.section-light {
    background: #fff;
}
.section-gray {
    background: #f4f4f4;
}
.section-title {
    margin: 0 0 14px;
    font-size: clamp(26px, 4vw, 38px);
    line-height: 1.25;
    color: #101010;
}
.section-lead {
    margin: 0 0 28px;
    color: #555;
    max-width: 760px;
}
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgb(213, 5, 5);
    background: #fff1f1;
    border-radius: 999px;
    padding: 6px 12px;
    font-weight: 700;
    font-size: 13px;
    margin-bottom: 16px;
}
.hero {
    background: linear-gradient(180deg, #fff 0%, #f7f7f7 100%);
    padding: 34px 0 46px;
}
.hero-grid {
    display: grid;
    gap: 28px;
    align-items: center;
}
.hero h1 {
    font-size: clamp(32px, 7vw, 58px);
    line-height: 1.12;
    margin: 0 0 18px;
    letter-spacing: -.5px;
}
.hero p {
    color: #4a4a4a;
    margin: 0 0 24px;
    font-size: 16px;
}
.hero-visual {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 26px;
    padding: 12px;
    box-shadow: 0 18px 38px rgba(0,0,0,.08);
    position: relative;
}
.hero-visual:before {
    content: "";
    position: absolute;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: rgba(213,5,5,.12);
    right: -34px;
    top: -34px;
    z-index: 0;
}
.hero-visual img {
    position: relative;
    z-index: 1;
    border-radius: 20px;
    width: 100%;
    min-height: 260px;
    object-fit: cover;
}
.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}
.hero-tags span {
    background: #fff;
    color: #343434;
    border: 1px solid #e9e9e9;
    border-radius: 999px;
    padding: 7px 12px;
    font-size: 13px;
}
.category-section {
    background: #fff;
}
.category-main-grid,
.category-sub-grid,
.focus-grid,
.help-grid,
.data-cards,
.page-card-grid {
    display: grid;
    gap: 18px;
}
.category-main-card,
.category-sub-card,
.focus-card,
.info-card,
.security-card,
.faq-item,
.page-card,
.data-card {
    background: #fff;
    border: 1px solid #ececec;
    border-radius: 20px;
    padding: 22px;
    box-shadow: 0 12px 28px rgba(0,0,0,.045);
}
.category-main-card {
    min-height: 240px;
    border-top: 4px solid rgb(213, 5, 5);
}
.category-sub-card {
    background: #fafafa;
}
.category-main-card h3,
.category-sub-card h3,
.focus-card h3,
.info-card h3,
.security-card h3,
.page-card h3,
.data-card h3 {
    margin: 0 0 10px;
    font-size: 21px;
}
.category-main-card p,
.category-sub-card p,
.focus-card p,
.info-card p,
.security-card p,
.page-card p,
.data-card p {
    margin: 0 0 16px;
    color: #555;
}
.text-link {
    color: rgb(213, 5, 5);
    font-weight: 700;
}
.text-link:after {
    content: "›";
    margin-left: 4px;
}
.focus-card {
    position: relative;
    overflow: hidden;
}
.focus-card:before {
    content: attr(data-label);
    display: inline-flex;
    color: #fff;
    background: rgb(213, 5, 5);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 14px;
}
.info-split,
.showcase,
.data-section,
.app-showcase {
    display: grid;
    gap: 24px;
    align-items: center;
}
.info-panel {
    background: #fff;
    border: 1px solid #ececec;
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 14px 30px rgba(0,0,0,.05);
}
.info-list {
    display: grid;
    gap: 14px;
}
.info-item {
    background: #fafafa;
    border: 1px solid #ededed;
    border-radius: 16px;
    padding: 16px;
}
.info-item h3 {
    margin: 0 0 6px;
    color: #111;
    font-size: 18px;
}
.info-item p {
    margin: 0;
    color: #555;
}
.image-card {
    background: #fff;
    border: 1px solid #ececec;
    border-radius: 24px;
    padding: 12px;
    box-shadow: 0 16px 34px rgba(0,0,0,.07);
}
.image-card img {
    border-radius: 18px;
    width: 100%;
    object-fit: cover;
}
.check-list,
.note-list {
    padding: 0;
    margin: 20px 0 0;
    display: grid;
    gap: 10px;
    list-style: none;
}
.check-list li,
.note-list li {
    position: relative;
    padding-left: 24px;
    color: #4f4f4f;
}
.check-list li:before,
.note-list li:before {
    content: "";
    position: absolute;
    left: 0;
    top: .75em;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: rgb(213, 5, 5);
}
.data-board {
    background: #fff;
    border: 1px solid #ececec;
    border-radius: 24px;
    padding: 22px;
    box-shadow: 0 14px 30px rgba(0,0,0,.05);
}
.data-card {
    padding: 18px;
    background: #fafafa;
    box-shadow: none;
}
.status-pill {
    display: inline-flex;
    align-items: center;
    background: #fff1f1;
    color: rgb(213, 5, 5);
    border-radius: 999px;
    padding: 5px 10px;
    font-weight: 700;
    font-size: 12px;
    margin-bottom: 10px;
}
.security-help-section {
    background: #fff;
}
.responsible-box {
    background: #fff;
    border-left: 6px solid rgb(213, 5, 5);
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 14px 30px rgba(0,0,0,.05);
}
.responsible-box p {
    margin: 0 0 12px;
    color: #4b4b4b;
}
.faq-list {
    display: grid;
    gap: 14px;
}
.faq-item h3 {
    margin: 0 0 8px;
    font-size: 18px;
}
.faq-item p {
    margin: 0;
    color: #555;
}
.cta {
    background: #fff;
    text-align: center;
    border-top: 1px solid #eee;
}
.cta-card {
    background: linear-gradient(135deg, #fff 0%, #fff5f5 100%);
    border: 1px solid #f0dada;
    border-radius: 28px;
    padding: 32px 20px;
}
.cta-card h2 {
    margin: 0 0 10px;
    font-size: clamp(26px, 5vw, 38px);
}
.cta-card p {
    max-width: 700px;
    margin: 0 auto 22px;
    color: #555;
}
.page-hero {
    background: #fff;
    padding: 44px 0 38px;
    border-bottom: 1px solid #eee;
}
.page-hero h1 {
    margin: 0 0 16px;
    font-size: clamp(30px, 6vw, 48px);
    line-height: 1.18;
}
.page-hero p {
    margin: 0;
    color: #4f4f4f;
    max-width: 820px;
}
.content-grid {
    display: grid;
    gap: 22px;
}
.content-main {
    background: #fff;
    border: 1px solid #ececec;
    border-radius: 24px;
    padding: 24px;
}
.content-main h2 {
    margin: 0 0 14px;
    font-size: 26px;
}
.content-main p {
    color: #4d4d4d;
    margin: 0 0 16px;
}
.sidebar-card {
    background: #fff;
    border: 1px solid #ececec;
    border-radius: 24px;
    padding: 22px;
}
.related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}
.related-links a {
    border: 1px solid #eee;
    background: #fff;
    color: #333;
    border-radius: 999px;
    padding: 8px 12px;
}
.related-links a:hover {
    color: rgb(213, 5, 5);
    border-color: #ffd1d1;
}
.steps {
    counter-reset: step;
    display: grid;
    gap: 14px;
}
.step {
    counter-increment: step;
    display: grid;
    grid-template-columns: 42px 1fr;
    gap: 14px;
    background: #fff;
    border: 1px solid #ececec;
    border-radius: 18px;
    padding: 16px;
}
.step:before {
    content: counter(step);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: rgb(213, 5, 5);
    font-weight: 800;
}
.site-footer {
    background: #191919;
    color: #ddd;
}
.footer-grid {
    display: grid;
    gap: 24px;
    padding: 42px 0;
}
.footer-logo {
    height: 42px;
    width: auto;
    margin-bottom: 14px;
}
.site-footer h3 {
    color: #fff;
    margin: 0 0 12px;
}
.site-footer p {
    margin: 0;
    color: #c8c8c8;
}
.site-footer a {
    display: block;
    color: #c8c8c8;
    margin: 7px 0;
}
.site-footer a:hover {
    color: #fff;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 16px 0;
    font-size: 13px;
}
.footer-bottom .container {
    display: grid;
    gap: 8px;
}

@media (min-width: 720px) {
    .category-main-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .category-sub-grid,
    .focus-grid,
    .help-grid,
    .data-cards,
    .page-card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .footer-grid {
        grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    }
    .footer-bottom .container {
        display: flex;
        justify-content: space-between;
        gap: 20px;
    }
}
@media (min-width: 980px) {
    .mobile-header,
    .mobile-nav {
        display: none !important;
    }
    .desktop-header {
        display: block;
    }
    .top-strip {
        background: rgb(180, 4, 4);
        color: #fff;
        font-size: 13px;
    }
    .top-strip-inner {
        min-height: 38px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 24px;
    }
    .desktop-nav-wrap {
        background: #fff;
        border-bottom: 1px solid #e8e8e8;
        box-shadow: 0 10px 18px rgba(0,0,0,.04);
    }
    .desktop-nav {
        height: 78px;
        display: flex;
        align-items: center;
        gap: 24px;
    }
    .desktop-logo img {
        height: 48px;
    }
    .main-nav {
        flex: 1;
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 22px;
        white-space: nowrap;
    }
    .main-nav a {
        font-weight: 700;
        color: #303030;
        padding: 26px 0;
        position: relative;
    }
    .main-nav a.active,
    .main-nav a:hover {
        color: rgb(213, 5, 5);
    }
    .main-nav a.active:after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: 16px;
        height: 3px;
        border-radius: 3px;
        background: rgb(213, 5, 5);
    }
    .search-icon {
        width: 28px;
        height: 28px;
        display: inline-block;
        position: relative;
        border: 2px solid #333;
        border-radius: 50%;
        flex: 0 0 auto;
    }
    .search-icon:after {
        content: "";
        position: absolute;
        width: 10px;
        height: 2px;
        background: #333;
        transform: rotate(45deg);
        right: -7px;
        bottom: 1px;
        border-radius: 4px;
    }
    .hero {
        padding: 62px 0 70px;
    }
    .hero-grid,
    .info-split,
    .showcase,
    .data-section,
    .app-showcase,
    .content-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .category-main-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .category-sub-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .category-main-card:nth-child(1),
    .category-main-card:nth-child(4) {
        transform: translateY(18px);
    }
    .focus-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .help-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .page-card-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .data-cards {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .content-main {
        padding: 32px;
    }
    .sidebar-card {
        align-self: start;
    }
}