* {
    box-sizing: border-box;
}

:root {
    --bg: #F5F7FF;
    --nav: rgba(12, 18, 40, 0.94);
    --title: #131A35;
    --primary: #5B6CFF;
    --deep: #16213E;
    --cyan: #00D4FF;
    --gold: #FFC857;
    --rose: #D94F70;
    --lavender: #7A5CFF;
    --text: #1F2740;
    --muted: #66708A;
    --soft: #9AA4BA;
    --card: #FFFFFF;
    --border: rgba(91, 108, 255, 0.18);
    --shadow: 0 20px 46px rgba(25, 43, 91, 0.14);
    --gradient: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 48%, #00D4FF 100%);
}

html {
    scroll-behavior: smooth;
}

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

body.drawer-open {
    overflow: hidden;
}

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

a {
    color: inherit;
}

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

.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 9999;
    background: var(--nav);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 26px rgba(25, 43, 91, 0.16);
}

.header-inner {
    width: min(1280px, calc(100% - 32px));
    min-height: 72px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #FFFFFF;
    text-decoration: none;
    white-space: nowrap;
}

.site-logo img {
    width: 42px;
    height: 42px;
    object-fit: contain;
    display: block;
}

.site-logo strong {
    font-size: 18px;
    letter-spacing: .03em;
}

.nav-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.nav-core a {
    color: #EEF2FF;
    text-decoration: none;
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 15px;
    transition: .2s ease;
    white-space: nowrap;
}

.nav-core a:hover,
.nav-core a.active {
    color: #FFFFFF;
    background: rgba(0, 212, 255, 0.16);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.main-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 22px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    transition: transform .2s ease, box-shadow .2s ease;
}

.main-btn {
    color: #FFFFFF;
    background: var(--gradient);
    box-shadow: 0 14px 32px rgba(91, 108, 255, 0.22);
}

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

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

.menu-toggle,
.drawer-close {
    border: 0;
    cursor: pointer;
}

.menu-toggle {
    width: 44px;
    height: 44px;
    padding: 11px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.1);
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    border-radius: 99px;
    background: #FFFFFF;
}

.menu-toggle-mobile {
    display: none;
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(4, 9, 24, .58);
    opacity: 0;
    transition: opacity .22s ease;
}

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

.site-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 10001;
    width: min(390px, 90vw);
    height: 100dvh;
    padding: 24px;
    background: #FFFFFF;
    box-shadow: -24px 0 70px rgba(13, 21, 51, .22);
    transform: translateX(105%);
    transition: transform .24s ease;
    overflow-y: auto;
}

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

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
}

.drawer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--title);
    text-decoration: none;
    font-weight: 800;
}

.drawer-brand img {
    width: 44px;
    height: 44px;
    object-fit: contain;
}

.drawer-close {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #EFF2FF;
    color: var(--title);
    font-size: 28px;
    line-height: 1;
}

.drawer-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.drawer-nav a {
    display: block;
    padding: 11px 13px;
    color: var(--text);
    background: #F6F8FF;
    border: 1px solid rgba(91, 108, 255, .12);
    border-radius: 14px;
    text-decoration: none;
}

.drawer-nav a:hover {
    color: var(--primary);
    background: #EDF0FF;
}

.drawer-note {
    margin-top: 20px;
    padding: 18px;
    color: #EAF0FF;
    background: var(--deep);
    border-radius: 18px;
}

.drawer-note p {
    margin: 7px 0 0;
    color: #C6D0EE;
    font-size: 14px;
}

main {
    min-height: 60vh;
}

.container {
    width: min(1180px, calc(100% - 36px));
    margin: 0 auto;
}

.section {
    padding: 78px 0;
}

.section-sm {
    padding: 50px 0;
}

.section-title-wrap {
    max-width: 760px;
    margin-bottom: 30px;
}

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

.section-kicker {
    display: inline-flex;
    margin-bottom: 10px;
    color: #8B5D00;
    background: #FFF4D6;
    border-radius: 999px;
    padding: 5px 12px;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}

h1,
h2,
h3,
.section-title {
    color: var(--title);
    line-height: 1.25;
}

h1 {
    margin: 0;
    font-size: clamp(42px, 7vw, 76px);
    letter-spacing: -.04em;
}

h2 {
    margin: 0 0 14px;
    font-size: clamp(28px, 4vw, 42px);
}

h3 {
    margin: 0 0 10px;
    font-size: 21px;
}

p {
    margin: 0 0 16px;
}

.lead {
    color: var(--muted);
    font-size: 18px;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: 86px 0 70px;
    background:
        radial-gradient(circle at 10% 15%, rgba(122, 92, 255, .24), transparent 30%),
        radial-gradient(circle at 90% 22%, rgba(0, 212, 255, .20), transparent 28%),
        linear-gradient(145deg, #F7F4FF 0%, #EAF7FF 53%, #FFF2FA 100%);
}

.hero::before,
.hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(2px);
    pointer-events: none;
}

.hero::before {
    width: 220px;
    height: 220px;
    left: -80px;
    bottom: -80px;
    background: rgba(255, 200, 87, .18);
}

.hero::after {
    width: 300px;
    height: 300px;
    right: -110px;
    bottom: -130px;
    background: rgba(217, 79, 112, .12);
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.02fr .98fr;
    gap: 54px;
    align-items: center;
}

.hero-copy {
    max-width: 640px;
}

.hero-copy .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--primary);
    font-weight: 800;
}

.hero-subtitle {
    margin: 14px 0 18px;
    color: var(--deep);
    font-size: clamp(23px, 3vw, 34px);
    font-weight: 800;
}

.hero-description {
    color: var(--muted);
    font-size: 17px;
}

.hero-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin: 28px 0 24px;
}

.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-points span,
.pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 7px 12px;
    color: var(--deep);
    background: rgba(255, 255, 255, .76);
    border: 1px solid rgba(91, 108, 255, .15);
    font-size: 14px;
}

.hero-visual {
    position: relative;
    padding: 18px;
}

.hero-visual::before {
    content: "";
    position: absolute;
    inset: 4% 7% 3%;
    border-radius: 36px;
    background: var(--gradient);
    opacity: .18;
    transform: rotate(4deg);
}

.hero-visual img,
.content-img,
.zone-card img,
.app-section img {
    position: relative;
    width: 100%;
    max-width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
    border-radius: 28px;
}

.hero-visual img {
    filter: drop-shadow(0 28px 40px rgba(30, 44, 99, .2));
}

.highlight-strip {
    position: relative;
    z-index: 2;
    margin-top: -20px;
}

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.highlight-item {
    padding: 22px;
    background: rgba(255, 255, 255, .96);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: 0 14px 34px rgba(25, 43, 91, .09);
}

.highlight-item strong {
    display: block;
    margin-bottom: 5px;
    color: var(--title);
}

.highlight-item p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.channel-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.channel-pill {
    flex: 1 1 190px;
    min-height: 104px;
    padding: 16px 18px;
    color: var(--text);
    text-decoration: none;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 10px 24px rgba(25, 43, 91, .06);
}

.channel-pill strong {
    display: block;
    margin-bottom: 5px;
    color: var(--primary);
}

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

.card,
.zone-card,
.info-card,
.review-card,
.faq-item {
    background: #FFFFFF;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: 22px;
}

.split-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    align-items: stretch;
}

.split-card {
    overflow: hidden;
}

.split-card .content-img {
    aspect-ratio: 16 / 9;
    padding: 18px;
    background: linear-gradient(145deg, #EFF8FF, #F7F2FF);
}

.card-body {
    padding: 28px;
}

.card-body p,
.info-card p,
.zone-card p {
    color: var(--muted);
}

.feature-list {
    display: grid;
    gap: 11px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.feature-list li {
    position: relative;
    padding-left: 20px;
    color: var(--text);
}

.feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .75em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gradient);
}

.text-link {
    display: inline-flex;
    margin-top: 12px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 800;
}

.text-link:hover {
    text-decoration: underline;
}

.media-grid {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 34px;
    align-items: center;
}

.media-grid.reverse {
    grid-template-columns: .95fr 1.05fr;
}

.media-copy {
    padding: 10px 0;
}

.media-frame {
    padding: 20px;
    background: linear-gradient(145deg, #FFFFFF, #EDF7FF);
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: var(--shadow);
}

.three-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.info-card {
    overflow: hidden;
}

.info-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: contain;
    padding: 14px;
    background: #F6F8FF;
}

.info-card .card-body {
    padding: 24px;
}

.safety-band {
    color: #EDF2FF;
    background:
        radial-gradient(circle at 10% 20%, rgba(0, 212, 255, .18), transparent 25%),
        linear-gradient(135deg, #101933 0%, #16213E 58%, #1B2450 100%);
}

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

.safety-band p,
.safety-band li {
    color: #C8D2EE;
}

.safety-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 26px;
    align-items: center;
}

.safety-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.safety-images img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 20px;
    background: rgba(255, 255, 255, .08);
}

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

.review-card {
    padding: 24px;
}

.review-card .quote {
    color: var(--muted);
}

.review-card .reviewer {
    margin-top: 16px;
    color: var(--title);
    font-weight: 800;
}

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

.faq-item {
    padding: 23px 25px;
}

.faq-item h3 {
    font-size: 18px;
}

.faq-item p {
    margin: 0;
    color: var(--muted);
}

.notice-box {
    padding: 28px;
    color: #5A4320;
    background: #FFF8E8;
    border: 1px solid rgba(255, 200, 87, .5);
    border-radius: 22px;
}

.notice-box h2,
.notice-box h3 {
    color: #4D3612;
}

.inner-hero {
    position: relative;
    overflow: hidden;
    padding: 66px 0;
    background:
        radial-gradient(circle at 82% 14%, rgba(0, 212, 255, .18), transparent 24%),
        radial-gradient(circle at 12% 82%, rgba(122, 92, 255, .18), transparent 28%),
        linear-gradient(145deg, #F7F4FF 0%, #EAF7FF 100%);
}

.inner-hero-grid {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 42px;
    align-items: center;
}

.inner-hero h1 {
    font-size: clamp(38px, 5vw, 60px);
}

.inner-hero img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 28px;
    filter: drop-shadow(0 22px 32px rgba(30, 44, 99, .16));
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
    color: var(--muted);
    font-size: 14px;
}

.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr);
    gap: 28px;
    align-items: start;
}

.article-card {
    padding: 34px;
}

.article-card h2:not(:first-child) {
    margin-top: 32px;
}

.article-card p {
    color: var(--muted);
}

.side-stack {
    display: grid;
    gap: 18px;
    position: sticky;
    top: 98px;
}

.side-card {
    padding: 23px;
}

.side-card.dark {
    color: #DCE5FF;
    background: var(--deep);
}

.side-card.dark h3 {
    color: #FFFFFF;
}

.side-card.dark p {
    color: #C3CEE9;
}

.service-points {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.service-point {
    padding: 22px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 18px;
}

.service-point span {
    display: inline-flex;
    margin-bottom: 9px;
    padding: 4px 9px;
    color: var(--primary);
    background: #EEF0FF;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
}

.service-point p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.cta-band {
    padding: 34px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    color: #FFFFFF;
    background: var(--gradient);
    border-radius: 28px;
    box-shadow: 0 20px 44px rgba(91, 108, 255, .23);
}

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

.cta-band p {
    margin: 8px 0 0;
    opacity: .9;
}

.cta-band .secondary-btn {
    flex: 0 0 auto;
}

.site-footer {
    margin-top: 70px;
    color: #EEF2FF;
    background: #0B1024;
}

.footer-inner {
    width: min(1180px, calc(100% - 36px));
    margin: 0 auto;
    padding: 58px 0 40px;
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 60px;
}

.footer-brand p {
    max-width: 410px;
    margin-top: 18px;
    color: #AEB9D7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
}

.footer-links h3 {
    color: #FFFFFF;
    font-size: 16px;
}

.footer-links a {
    display: block;
    margin: 8px 0;
    color: #AEB9D7;
    text-decoration: none;
    font-size: 14px;
}

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

.footer-bottom {
    padding: 20px 18px;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, .08);
}

.footer-bottom p {
    margin: 0;
    color: #8F9BB9;
    font-size: 13px;
}

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

@media (max-width: 1080px) {
    .nav-core a:nth-child(4) {
        display: none;
    }

    .hero-grid,
    .media-grid,
    .media-grid.reverse,
    .inner-hero-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

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

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

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 34px;
    }
}

@media (max-width: 820px) {
    body {
        padding-bottom: 66px;
    }

    .header-inner {
        width: min(100% - 22px, 760px);
        min-height: 64px;
        gap: 8px;
    }

    .nav-core,
    .menu-toggle-desktop {
        display: none;
    }

    .menu-toggle-mobile {
        display: inline-flex;
    }

    .site-logo strong {
        display: none;
    }

    .site-logo img {
        width: 40px;
        height: 40px;
    }

    .header-cta {
        min-height: 40px;
        padding: 8px 15px;
        font-size: 13px;
    }

    .hero {
        padding: 58px 0 48px;
    }

    .hero-grid,
    .inner-hero-grid,
    .media-grid,
    .media-grid.reverse,
    .safety-grid,
    .content-grid {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        max-width: none;
    }

    .hero-visual {
        max-width: 620px;
        margin: 0 auto;
    }

    .split-grid,
    .three-grid,
    .service-points {
        grid-template-columns: 1fr;
    }

    .side-stack {
        position: static;
    }

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

    .mobile-bottom-nav {
        position: fixed;
        left: 12px;
        right: 12px;
        bottom: 10px;
        z-index: 9500;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        padding: 8px;
        background: rgba(11, 16, 36, .94);
        backdrop-filter: blur(12px);
        border: 1px solid rgba(255, 255, 255, .1);
        border-radius: 18px;
        box-shadow: 0 18px 38px rgba(11, 16, 36, .28);
    }

    .mobile-bottom-nav a {
        padding: 8px 5px;
        color: #EEF2FF;
        text-align: center;
        text-decoration: none;
        border-radius: 12px;
        font-size: 13px;
    }

    .mobile-bottom-nav a:hover {
        background: rgba(0, 212, 255, .13);
    }
}

@media (max-width: 620px) {
    .container {
        width: min(100% - 24px, 560px);
    }

    .section {
        padding: 58px 0;
    }

    .section-sm {
        padding: 38px 0;
    }

    h1 {
        font-size: 42px;
    }

    h2 {
        font-size: 29px;
    }

    .hero-description,
    .lead {
        font-size: 16px;
    }

    .highlight-grid,
    .review-grid,
    .safety-images {
        grid-template-columns: 1fr;
    }

    .highlight-strip {
        margin-top: 16px;
    }

    .hero-actions,
    .cta-band {
        align-items: stretch;
        flex-direction: column;
    }

    .hero-actions .main-btn,
    .hero-actions .secondary-btn,
    .cta-band .secondary-btn {
        width: 100%;
    }

    .article-card,
    .card-body {
        padding: 24px;
    }

    .drawer-nav {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        width: min(100% - 28px, 560px);
        padding-top: 44px;
    }

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