* {
    box-sizing: border-box;
}

:root {
    --bg: #080808;
    --bg-deep: #101010;
    --bg-soft: #151010;
    --card: #141414;
    --red: #ff3b3b;
    --red-light: #ff4a4a;
    --text: #f6f6f6;
    --muted: #c8c8c8;
    --subtle: #999999;
    --border: rgba(255, 59, 59, 0.18);
    --shadow: 0 18px 42px rgba(0, 0, 0, 0.46);
    --glow: 0 0 24px rgba(255, 59, 59, 0.26);
    --header-h: 72px;
    --channel-h: 52px;
}

html {
    scroll-behavior: smooth;
    background: var(--bg);
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 50% -10%, rgba(178, 0, 0, 0.18), transparent 32%),
        var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

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

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

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

button {
    font: inherit;
}

.container {
    width: min(1180px, calc(100% - 40px));
    margin-inline: auto;
}

.site-main {
    min-height: 70vh;
    padding-top: calc(var(--header-h) + var(--channel-h));
}

.site-header {
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    background: rgba(8, 8, 8, 0.94);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 59, 59, 0.16);
}

.header-inner {
    width: min(1240px, calc(100% - 36px));
    height: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
}

.logo-text {
    display: inline-block;
    white-space: nowrap;
    font-size: 30px;
    font-weight: 900;
    line-height: 1;
    letter-spacing: 2px;
    color: #fff;
    background: linear-gradient(180deg, #fff 0%, #ff4a4a 45%, #c40000 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 12px rgba(255, 35, 35, 0.58), 0 0 30px rgba(196, 0, 0, 0.42);
}

.nav-core {
    display: flex;
    min-width: 0;
    align-items: center;
    justify-content: center;
    gap: clamp(4px, 1.2vw, 18px);
    white-space: nowrap;
    flex-wrap: nowrap;
    overflow: hidden;
}

.nav-core a {
    color: var(--text);
    padding: 9px 11px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 700;
    transition: 0.25s ease;
}

.nav-core a:hover,
.nav-core a.active {
    color: var(--red);
    background: rgba(255, 59, 59, 0.1);
    box-shadow: 0 0 18px rgba(255, 59, 59, 0.16);
}

.main-btn,
.ghost-btn {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 800;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.main-btn {
    flex: 0 0 auto;
    color: #fff;
    background: linear-gradient(180deg, #ff5a5a 0%, #d60000 55%, #8f0000 100%);
    box-shadow: 0 12px 28px rgba(255, 59, 59, 0.24);
}

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

.main-btn:hover {
    box-shadow: 0 15px 34px rgba(255, 59, 59, 0.34);
}

.ghost-btn {
    color: var(--text);
    border: 1px solid rgba(255, 59, 59, 0.38);
    background: rgba(255, 59, 59, 0.06);
}

.header-register {
    min-width: 86px;
    padding-inline: 22px;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #121212;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 4px 0;
    border-radius: 2px;
    background: var(--text);
}

.channel-nav-wrap {
    position: fixed;
    z-index: 990;
    top: var(--header-h);
    left: 0;
    width: 100%;
    height: var(--channel-h);
    background: rgba(16, 16, 16, 0.94);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 59, 59, 0.12);
}

.channel-nav {
    width: 100%;
    height: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 59, 59, 0.35) transparent;
}

.channel-nav-inner {
    width: max-content;
    min-width: 100%;
    height: 100%;
    padding: 8px max(20px, calc((100vw - 1180px) / 2));
    display: flex;
    align-items: center;
    gap: 8px;
}

.channel-nav a {
    display: inline-flex;
    height: 34px;
    align-items: center;
    padding: 0 14px;
    color: var(--muted);
    border: 1px solid rgba(255, 59, 59, 0.14);
    border-radius: 999px;
    font-size: 13px;
    transition: 0.2s ease;
}

.channel-nav a:hover,
.channel-nav a.active {
    color: var(--red);
    border-color: rgba(255, 59, 59, 0.45);
    background: rgba(255, 59, 59, 0.08);
}

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

.hero-home {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.hero-home::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, #080808 0%, rgba(8, 8, 8, 0.82) 44%, rgba(8, 8, 8, 0.25) 100%);
    z-index: 1;
    pointer-events: none;
}

.hero-home-grid {
    position: relative;
    min-height: 520px;
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
    align-items: center;
    gap: 40px;
}

.hero-copy {
    position: relative;
    z-index: 2;
    padding: 72px 0;
}

.hero-copy h1,
.inner-hero h1 {
    margin: 12px 0 20px;
    color: var(--red);
    font-size: clamp(38px, 5vw, 72px);
    line-height: 1.12;
    letter-spacing: -1px;
    text-shadow: 0 0 28px rgba(255, 59, 59, 0.25);
}

.hero-copy p,
.inner-hero-copy .lead {
    max-width: 680px;
    margin: 0;
    color: var(--muted);
    font-size: clamp(16px, 2vw, 19px);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.hero-banner {
    position: relative;
    z-index: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 420px;
    padding: 36px 0;
}

.hero-banner img {
    width: 100%;
    max-height: 380px;
    object-fit: contain;
    filter: none;
}

.eyebrow,
.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--red-light);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.section-block {
    padding: 84px 0;
}

.section-muted {
    background: linear-gradient(180deg, rgba(21, 16, 16, 0.76), rgba(13, 13, 13, 0.8));
    border-top: 1px solid rgba(255, 59, 59, 0.08);
    border-bottom: 1px solid rgba(255, 59, 59, 0.08);
}

.section-block h2,
.compliance-band h2,
.site-footer h2 {
    margin: 8px 0 18px;
    color: var(--red);
    font-size: clamp(27px, 3.3vw, 42px);
    line-height: 1.25;
    text-shadow: 0 0 20px rgba(255, 59, 59, 0.2);
}

.section-block h3 {
    margin: 0 0 10px;
    color: var(--text);
    font-size: 20px;
}

.section-block p,
.site-footer p {
    margin: 0 0 14px;
    color: var(--muted);
}

.intro-grid,
.split-content {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
    align-items: center;
    gap: 58px;
}

.split-content.single {
    grid-template-columns: minmax(0, 820px);
    justify-content: center;
}

.content-media,
.inner-hero-media {
    margin: 0;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 22px;
    background: radial-gradient(circle at 50% 20%, rgba(255, 59, 59, 0.09), transparent 55%), #111;
    box-shadow: var(--shadow);
}

.content-img,
.inner-hero-media img {
    width: 100%;
    height: auto;
    max-height: 310px;
    object-fit: contain;
}

.summary-grid,
.feature-grid,
.quick-grid,
.zone-grid,
.review-grid {
    display: grid;
    gap: 18px;
}

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

.feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quick-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

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

.review-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.zone-card,
.info-card,
.review-card,
.summary-card,
.quick-card,
.notice-panel,
.brand-summary,
.step-item {
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: 18px;
}

.summary-card,
.info-card,
.quick-card,
.review-card {
    padding: 24px;
}

.summary-card h3,
.quick-card h3 {
    color: var(--text);
}

.summary-card p,
.quick-card p {
    color: var(--muted);
    font-size: 14px;
}

.quick-card {
    display: flex;
    min-height: 190px;
    flex-direction: column;
}

.quick-card .text-link {
    margin-top: auto;
}

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

.text-link::after {
    content: "→";
    margin-left: 7px;
    transition: transform 0.2s ease;
}

.text-link:hover::after {
    transform: translateX(4px);
}

.card-index {
    display: inline-flex;
    margin-bottom: 16px;
    color: var(--red-light);
    font-weight: 900;
    letter-spacing: 0.08em;
}

.zone-card {
    overflow: hidden;
}

.zone-card figure {
    display: flex;
    height: 190px;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 16px;
    background: #0e0e0e;
    border-bottom: 1px solid rgba(255, 59, 59, 0.12);
}

.zone-card img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

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

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

.dual-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.service-panel {
    padding: 32px;
    background: linear-gradient(145deg, #161111, #111);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

.service-panel ul {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.service-panel li {
    position: relative;
    margin: 12px 0;
    padding-left: 20px;
    color: var(--muted);
}

.service-panel li::before {
    content: "";
    position: absolute;
    top: 0.72em;
    left: 0;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--red);
    box-shadow: var(--glow);
}

.inner-hero {
    position: relative;
    overflow: hidden;
    padding: 70px 0;
    background:
        radial-gradient(circle at 70% 20%, rgba(255, 45, 45, 0.15), transparent 34%),
        linear-gradient(145deg, #0a0a0a, #130d0d);
    border-bottom: 1px solid var(--border);
}

.inner-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr);
    align-items: center;
    gap: 54px;
}

.inner-hero-grid.no-image {
    grid-template-columns: minmax(0, 860px);
}

.inner-hero-copy h1 {
    font-size: clamp(38px, 5vw, 62px);
}

.inner-hero-media img {
    max-height: 300px;
}

.steps-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.step-item {
    display: grid;
    grid-template-columns: 46px 1fr;
    gap: 18px;
    align-items: flex-start;
    padding: 24px;
}

.step-item > span {
    display: inline-flex;
    width: 46px;
    height: 46px;
    align-items: center;
    justify-content: center;
    color: #fff;
    border-radius: 14px;
    background: linear-gradient(180deg, #ff5151, #990000);
    font-weight: 900;
    box-shadow: 0 10px 24px rgba(255, 59, 59, 0.2);
}

.notice-panel {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 50px;
    padding: 38px;
}

.notice-list p {
    position: relative;
    padding-left: 22px;
}

.notice-list p::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.75em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--red);
}

.review-card {
    margin: 0;
}

.review-card p {
    color: var(--text);
}

.review-card footer {
    margin-top: 20px;
    color: var(--red-light);
    font-size: 14px;
    font-weight: 800;
}

.faq-wrap {
    max-width: 930px;
}

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

.faq-list details {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #131313;
}

.faq-list summary {
    position: relative;
    padding: 19px 54px 19px 22px;
    color: var(--text);
    cursor: pointer;
    font-weight: 800;
    list-style: none;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary::after {
    content: "+";
    position: absolute;
    right: 22px;
    color: var(--red);
    font-size: 22px;
}

.faq-list details[open] summary::after {
    content: "−";
}

.faq-list details p {
    margin: 0;
    padding: 0 22px 22px;
}

.brand-summary {
    display: grid;
    grid-template-columns: 0.8fr 1.4fr auto;
    align-items: center;
    gap: 34px;
    padding: 38px;
}

.brand-summary h2 {
    margin-bottom: 0;
}

.compliance-band {
    padding: 52px 0;
    background: #0c0909;
    border-top: 1px solid rgba(255, 59, 59, 0.2);
}

.compliance-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 48px;
    align-items: center;
}

.compliance-band h2 {
    margin-bottom: 0;
    font-size: clamp(25px, 3vw, 36px);
}

.compliance-band p {
    margin: 0;
    color: var(--muted);
}

.site-footer {
    padding: 68px 0 30px;
    background: #050505;
    color: var(--muted);
    border-top: 1px solid rgba(255, 59, 59, 0.14);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr;
    gap: 52px;
}

.footer-logo {
    margin-bottom: 22px;
}

.site-footer h2 {
    margin-top: 0;
    font-size: 18px;
}

.site-footer a:not(.logo-text) {
    display: block;
    margin: 8px 0;
    color: var(--muted);
}

.site-footer a:hover {
    color: var(--red);
}

.footer-notice {
    margin-top: 40px;
    padding-top: 26px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 13px;
}

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

@media (max-width: 1060px) {
    .header-inner {
        gap: 14px;
    }

    .nav-core {
        gap: 2px;
    }

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

    .hero-home-grid {
        grid-template-columns: 1fr 0.9fr;
    }

    .quick-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

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

@media (max-width: 820px) {
    :root {
        --header-h: 66px;
        --channel-h: 0px;
    }

    body {
        padding-bottom: 74px;
    }

    .site-main {
        padding-top: var(--header-h);
    }

    .header-inner {
        width: calc(100% - 20px);
        grid-template-columns: 42px minmax(0, 1fr) auto;
        gap: 10px;
    }

    .menu-toggle {
        display: block;
    }

    .header-inner > .logo-text {
        justify-self: center;
        font-size: 25px;
    }

    .nav-core,
    .channel-nav-wrap {
        display: none;
    }

    .header-register {
        min-width: 72px;
        min-height: 40px;
        padding-inline: 17px;
        font-size: 14px;
    }

    .drawer-overlay {
        display: block;
        position: fixed;
        z-index: 1090;
        inset: 0;
        background: rgba(0, 0, 0, 0.72);
        opacity: 0;
        visibility: hidden;
        transition: 0.25s ease;
    }

    .mobile-drawer {
        display: block;
        position: fixed;
        z-index: 1100;
        top: 0;
        bottom: 0;
        left: 0;
        width: min(84vw, 320px);
        overflow-y: auto;
        background: #101010;
        border-right: 1px solid rgba(255, 59, 59, 0.24);
        transform: translateX(-102%);
        transition: transform 0.28s ease;
        box-shadow: 26px 0 60px rgba(0, 0, 0, 0.54);
    }

    .drawer-open {
        overflow: hidden;
    }

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

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

    .drawer-head {
        position: sticky;
        top: 0;
        z-index: 2;
        display: flex;
        height: 70px;
        align-items: center;
        justify-content: space-between;
        padding: 0 18px;
        background: rgba(16, 16, 16, 0.98);
        border-bottom: 1px solid var(--border);
    }

    .drawer-logo {
        font-size: 25px;
    }

    .drawer-close {
        width: 40px;
        height: 40px;
        color: var(--text);
        border: 1px solid var(--border);
        border-radius: 12px;
        background: #181818;
        font-size: 27px;
        line-height: 1;
        cursor: pointer;
    }

    .drawer-nav {
        padding: 12px 14px 30px;
    }

    .drawer-nav a {
        display: block;
        padding: 13px 12px;
        color: var(--muted);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .drawer-nav a:hover {
        color: var(--red);
        background: rgba(255, 59, 59, 0.07);
    }

    .mobile-bottom-nav {
        position: fixed;
        z-index: 980;
        right: 0;
        bottom: 0;
        left: 0;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        min-height: 62px;
        padding-bottom: env(safe-area-inset-bottom);
        background: rgba(8, 8, 8, 0.97);
        border-top: 1px solid rgba(255, 59, 59, 0.22);
        backdrop-filter: blur(12px);
    }

    .mobile-bottom-nav a {
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--muted);
        font-size: 13px;
        font-weight: 800;
    }

    .mobile-bottom-nav a:hover {
        color: var(--red);
    }

    .hero-home-grid,
    .intro-grid,
    .split-content,
    .inner-hero-grid,
    .compliance-grid,
    .notice-panel,
    .brand-summary {
        grid-template-columns: 1fr;
    }

    .hero-home::before {
        background: linear-gradient(180deg, rgba(8, 8, 8, 0.93) 0%, rgba(8, 8, 8, 0.7) 55%, #080808 100%);
    }

    .hero-home-grid {
        min-height: auto;
        gap: 0;
    }

    .hero-copy {
        padding: 54px 0 24px;
    }

    .hero-banner {
        min-height: auto;
        padding: 10px 0 42px;
    }

    .hero-banner img {
        max-height: 250px;
    }

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

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

    .inner-hero {
        padding: 52px 0;
    }

    .inner-hero-media img,
    .content-img {
        max-height: 240px;
    }

    .brand-summary {
        gap: 12px;
    }

    .dual-panel,
    .steps-list {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-grid > div:first-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 560px) {
    .container {
        width: min(100% - 28px, 1180px);
    }

    .logo-text {
        letter-spacing: 1px;
    }

    .section-block {
        padding: 60px 0;
    }

    .hero-copy h1,
    .inner-hero-copy h1 {
        font-size: 38px;
    }

    .hero-copy p,
    .inner-hero-copy .lead {
        font-size: 16px;
    }

    .summary-grid,
    .feature-grid,
    .quick-grid,
    .zone-grid,
    .review-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .quick-card {
        min-height: auto;
    }

    .zone-card figure {
        height: 160px;
    }

    .content-media,
    .inner-hero-media {
        padding: 12px;
    }

    .content-img,
    .inner-hero-media img {
        max-height: 210px;
    }

    .notice-panel,
    .brand-summary,
    .service-panel {
        padding: 24px;
    }

    .step-item {
        grid-template-columns: 40px 1fr;
        padding: 20px;
    }

    .step-item > span {
        width: 40px;
        height: 40px;
    }

    .footer-grid > div:first-child {
        grid-column: auto;
    }
}