* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #171A22;
    color: #F2F5FA;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}

body.no-scroll {
    overflow: hidden;
}

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

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

button {
    font: inherit;
}

[hidden] {
    display: none !important;
}

.container {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10020;
    background: rgba(23,26,34,0.94);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,90,24,0.14);
}

.header-inner {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 76px;
}

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

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

.mobile-logo,
.mobile-menu-btn {
    display: none;
}

.nav-core {
    flex: 1 1 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 22px;
    white-space: nowrap;
    flex-wrap: nowrap;
    min-width: 0;
}

.nav-core a {
    color: #F2F5FA;
    font-weight: 700;
    letter-spacing: 0.02em;
    transition: color .2s ease;
}

.nav-core a:hover,
.nav-core a.active {
    color: #d50505;
}

.header-action {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
}

.all-menu-btn {
    border: 1px solid rgba(255,90,24,0.28);
    background: rgba(255,255,255,0.06);
    color: #d50505;
    border-radius: 999px;
    padding: 10px 16px;
    cursor: pointer;
    font-weight: 800;
}

.main-btn,
.ghost-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    border-radius: 999px;
    padding: 10px 20px;
    font-weight: 900;
    letter-spacing: 0.02em;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.main-btn {
    background: linear-gradient(180deg, #FF7A22 0%, #d50505 45%, #E94710 100%);
    color: #FFFFFF;
    box-shadow: 0 12px 26px rgba(255,90,24,0.28);
}

.ghost-btn {
    color: #F2F5FA;
    border: 1px solid rgba(255,90,24,0.22);
    background: rgba(255,255,255,0.05);
}

.main-btn:hover,
.ghost-btn:hover,
.all-menu-btn:hover {
    transform: translateY(-1px);
}

.site-main {
    padding-top: 76px;
}

.menu-mask {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.48);
    z-index: 9990;
}

.mega-panel {
    position: fixed;
    top: 86px;
    left: 50%;
    transform: translateX(-50%);
    width: min(1120px, calc(100% - 32px));
    background: rgba(31,37,48,0.96);
    border: 1px solid rgba(255,90,24,0.16);
    border-radius: 24px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.36);
    z-index: 10000;
    padding: 22px;
}

.mega-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.mega-head strong {
    color: #d50505;
    font-size: 20px;
}

.mega-head button,
.drawer-head button {
    width: 36px;
    height: 36px;
    border: 1px solid rgba(255,90,24,0.26);
    border-radius: 50%;
    background: #242A35;
    color: #F2F5FA;
    cursor: pointer;
    font-size: 22px;
    line-height: 1;
}

.mega-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}

.mega-group {
    background: rgba(16,19,26,0.55);
    border: 1px solid rgba(255,90,24,0.12);
    border-radius: 18px;
    padding: 16px;
}

.mega-group h3 {
    margin: 0 0 12px;
    color: #d50505;
    font-size: 16px;
}

.mega-link {
    display: block;
    padding: 10px 0;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.mega-link span {
    display: block;
    color: #F2F5FA;
    font-weight: 800;
    transition: color .2s ease;
}

.mega-link em {
    display: block;
    color: #8F98A6;
    font-size: 13px;
    font-style: normal;
    line-height: 1.5;
}

.mega-link:hover span,
.mega-link.active span {
    color: #d50505;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: min(84vw, 320px);
    background: #1F2530;
    z-index: 10030;
    box-shadow: 20px 0 60px rgba(0,0,0,0.38);
    transform: translateX(-102%);
    transition: transform .24s ease;
    overflow-y: auto;
}

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

.drawer-head {
    min-height: 76px;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255,90,24,0.14);
}

.drawer-nav {
    padding: 12px 16px 24px;
    display: grid;
    gap: 8px;
}

.drawer-nav a {
    color: #F2F5FA;
    border-radius: 14px;
    padding: 12px 14px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.04);
    font-weight: 750;
}

.drawer-nav a.active,
.drawer-nav a:hover {
    color: #d50505;
    border-color: rgba(255,90,24,0.18);
    background: rgba(255,90,24,0.08);
}

.banner-slider {
    max-width: 1200px;
    margin: 28px auto 36px;
    border-radius: 22px;
    background: #10131A;
    box-shadow: 0 18px 42px rgba(0,0,0,0.34);
    overflow: hidden;
    position: relative;
    aspect-ratio: 1200 / 430;
    border: 1px solid rgba(255,90,24,0.14);
}

.banner-track,
.slide {
    width: 100%;
    height: 100%;
}

.slide {
    display: none;
    align-items: center;
    justify-content: center;
    background: #10131A;
}

.slide.active {
    display: flex;
}

.banner-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #10131A;
}

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

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border: 1px solid rgba(255,90,24,0.24);
    border-radius: 50%;
    background: rgba(16,19,26,0.72);
    color: #FFFFFF;
    cursor: pointer;
    font-size: 30px;
    line-height: 1;
    z-index: 5;
}

.slider-arrow.prev {
    left: 14px;
}

.slider-arrow.next {
    right: 14px;
}

.slider-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 14px;
    display: flex;
    justify-content: center;
    gap: 10px;
    z-index: 5;
}

.slider-dots button {
    width: 10px;
    height: 10px;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.45);
    cursor: pointer;
    padding: 0;
}

.slider-dots button.active {
    width: 26px;
    border-radius: 999px;
    background: #d50505;
}

.content-section {
    padding: 58px 0;
}

.muted-section {
    background: linear-gradient(180deg, rgba(16,19,26,0.55), rgba(29,34,44,0.35));
}

.section-head {
    max-width: 820px;
    margin: 0 0 28px;
}

.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.eyebrow {
    color: #d50505;
    margin: 0 0 8px;
    font-weight: 900;
    letter-spacing: 0.08em;
}

h1,
h2,
h3,
.section-title {
    color: #d50505;
    line-height: 1.22;
}

h1 {
    margin: 0 0 18px;
    font-size: clamp(32px, 5vw, 58px);
}

h2 {
    margin: 0 0 16px;
    font-size: clamp(26px, 3.2vw, 40px);
}

h3 {
    margin: 0 0 10px;
    font-size: 20px;
}

p {
    color: #B9C0CC;
    margin: 0 0 14px;
}

.lead-text {
    font-size: 18px;
    color: #DCE3EF;
}

.card,
.zone-card,
.info-card,
.review-card,
.step-card,
.notice-card,
.faq-list details,
.page-hero-media,
.quick-panel {
    background: #1F2530;
    border: 1px solid rgba(255,90,24,0.16);
    box-shadow: 0 18px 42px rgba(0,0,0,0.28);
    border-radius: 24px;
}

.home-intro {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 24px;
    align-items: stretch;
}

.quick-panel {
    padding: 22px;
}

.quick-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.quick-links a {
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,90,24,0.12);
    color: #F2F5FA;
    font-weight: 800;
}

.quick-links a:hover {
    color: #d50505;
}

.card-grid,
.service-grid,
.review-grid,
.steps-grid,
.product-matrix {
    display: grid;
    gap: 18px;
}

.service-grid {
    grid-template-columns: repeat(5, 1fr);
}

.card-grid {
    grid-template-columns: repeat(3, 1fr);
}

.media-grid {
    grid-template-columns: repeat(3, 1fr);
}

.product-matrix {
    grid-template-columns: repeat(4, 1fr);
}

.review-grid {
    grid-template-columns: repeat(3, 1fr);
}

.steps-grid {
    grid-template-columns: repeat(4, 1fr);
}

.info-card,
.review-card,
.step-card,
.notice-card,
.quick-panel,
.home-copy-card {
    padding: 24px;
}

.small-card {
    padding: 18px;
}

.info-card p,
.step-card p,
.zone-card p,
.review-card p {
    color: #B9C0CC;
}

.info-card strong,
.step-card span,
.highlight-number {
    color: #d50505;
}

.zone-card {
    overflow: hidden;
}

.zone-card img,
.content-img,
.app-section img {
    width: 100%;
    height: auto;
    object-fit: contain;
    background: #10131A;
}

.zone-card > div {
    padding: 20px;
}

.horizontal-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    align-items: center;
    padding: 18px;
}

.horizontal-card img {
    border-radius: 18px;
}

.home-copy-card {
    border-radius: 24px;
    background: #1F2530;
    border: 1px solid rgba(255,90,24,0.16);
    box-shadow: 0 18px 42px rgba(0,0,0,0.28);
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 18px 0 22px;
}

.tag-row span {
    border: 1px solid rgba(255,90,24,0.18);
    background: rgba(255,90,24,0.08);
    color: #d50505;
    border-radius: 999px;
    padding: 6px 12px;
    font-weight: 800;
}

.page-hero {
    padding: 58px 0 42px;
    background: radial-gradient(circle at top right, rgba(255,90,24,0.16), transparent 32%), linear-gradient(180deg, #171A22, #10131A);
}

.page-hero-grid {
    display: grid;
    grid-template-columns: 1.04fr .96fr;
    gap: 32px;
    align-items: center;
}

.page-hero-copy p {
    font-size: 17px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.page-hero-media {
    margin: 0;
    padding: 16px;
    overflow: hidden;
}

.page-hero-media img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 18px;
    background: #10131A;
}

.split-layout {
    display: grid;
    grid-template-columns: .95fr 1.05fr;
    gap: 28px;
    align-items: start;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.step-card span {
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,90,24,0.1);
    border: 1px solid rgba(255,90,24,0.18);
    font-weight: 900;
    margin-bottom: 18px;
}

.notice-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 28px;
}

.notice-card h2 {
    margin-bottom: 8px;
}

.notice-card p {
    margin: 0;
    max-width: 800px;
}

.faq-list {
    display: grid;
    gap: 12px;
}

.faq-list details {
    padding: 18px 22px;
}

.faq-list summary {
    cursor: pointer;
    color: #F2F5FA;
    font-weight: 850;
}

.faq-list details[open] summary {
    color: #d50505;
}

.faq-list p {
    margin-top: 12px;
}

.review-card strong {
    display: block;
    margin-top: 16px;
    color: #F2F5FA;
}

.site-footer {
    background: #0D1017;
    color: #DCE3EF;
    padding: 52px 0 26px;
    border-top: 1px solid rgba(255,90,24,0.12);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 28px;
}

.footer-brand p,
.footer-note p {
    color: #DCE3EF;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .main-btn {
    margin-top: 8px;
}

.footer-links {
    display: grid;
    gap: 8px;
    align-content: start;
}

.footer-links h3 {
    font-size: 18px;
}

.footer-links a {
    color: #DCE3EF;
}

.footer-links a:hover {
    color: #d50505;
}

.footer-note {
    margin-top: 32px;
    padding-top: 22px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

@media (max-width: 1100px) {
    .mega-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .service-grid,
    .product-matrix {
        grid-template-columns: repeat(2, 1fr);
    }
    .steps-grid,
    .card-grid,
    .media-grid,
    .review-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .nav-core {
        gap: 14px;
    }
}

@media (max-width: 820px) {
    .header-inner {
        min-height: 68px;
        display: grid;
        grid-template-columns: 48px 1fr auto;
        gap: 12px;
    }
    .desktop-logo,
    .nav-core,
    .all-menu-btn {
        display: none;
    }
    .mobile-logo {
        display: flex;
        justify-content: center;
    }
    .mobile-logo img,
    .drawer-head .logo img {
        max-height: 44px;
    }
    .mobile-menu-btn {
        display: inline-flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 44px;
        height: 44px;
        border: 1px solid rgba(255,90,24,0.22);
        border-radius: 14px;
        background: rgba(255,255,255,0.05);
        padding: 0 11px;
        cursor: pointer;
    }
    .mobile-menu-btn span {
        width: 20px;
        height: 2px;
        background: #F2F5FA;
        border-radius: 999px;
    }
    .header-action {
        justify-content: end;
    }
    .register-btn {
        min-height: 40px;
        padding: 8px 16px;
    }
    .site-main {
        padding-top: 68px;
    }
    .banner-slider {
        width: calc(100% - 24px);
        margin-top: 18px;
        border-radius: 16px;
        aspect-ratio: 16 / 7;
    }
    .slider-arrow {
        width: 36px;
        height: 36px;
        font-size: 25px;
    }
    .content-section {
        padding: 42px 0;
    }
    .home-intro,
    .page-hero-grid,
    .split-layout,
    .horizontal-card,
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .quick-links,
    .service-grid,
    .product-matrix,
    .steps-grid,
    .card-grid,
    .media-grid,
    .review-grid,
    .feature-list {
        grid-template-columns: 1fr;
    }
    .page-hero {
        padding: 42px 0 30px;
    }
    .notice-card {
        display: block;
    }
    .notice-card .main-btn {
        margin-top: 18px;
    }
    .mega-panel {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .container,
    .header-inner {
        width: calc(100% - 24px);
    }
    .main-btn,
    .ghost-btn {
        padding: 9px 15px;
    }
    .info-card,
    .review-card,
    .step-card,
    .notice-card,
    .quick-panel,
    .home-copy-card {
        padding: 18px;
    }
    .zone-card > div {
        padding: 16px;
    }
    .slider-dots {
        bottom: 9px;
    }
}