* {
    box-sizing: border-box;
}

:root {
    --bg: #F5F7FF;
    --nav: rgba(12,18,40,0.94);
    --title: #131A35;
    --primary: #5B6CFF;
    --deep: #16213E;
    --cyan: #00D4FF;
    --gold: #FFC857;
    --red: #D94F70;
    --light-blue: #EAF7FF;
    --light-gold: #FFF4D6;
    --highlight: #7A5CFF;
    --text: #1F2740;
    --muted: #66708A;
    --soft: #9AA4BA;
    --card: #FFFFFF;
    --dark-card: #11182F;
    --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;
    overflow-x: hidden;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.8;
    overflow-x: hidden;
}

body.drawer-open {
    overflow: hidden;
}

a {
    color: inherit;
}

img {
    max-width: 100%;
}

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% - 40px));
    min-height: 72px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #FFFFFF;
    font-weight: 800;
    font-size: 19px;
    text-decoration: none;
    white-space: nowrap;
}

.site-logo img {
    width: auto;
    max-width: 48px;
    max-height: 44px;
    display: block;
    object-fit: contain;
}

.nav-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    flex: 1;
}

.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 {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 22px;
    background: var(--gradient);
    color: #FFFFFF;
    border: 0;
    border-radius: 999px;
    box-shadow: 0 14px 32px rgba(91,108,255,0.22);
    text-decoration: none;
    font-weight: 700;
    transition: transform .2s ease, box-shadow .2s ease;
}

.main-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 36px rgba(91,108,255,0.3);
}

.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 22px;
    color: var(--primary);
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
}

.menu-button {
    width: 44px;
    height: 44px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 14px;
    cursor: pointer;
}

.menu-button span {
    width: 19px;
    height: 2px;
    background: #FFFFFF;
    border-radius: 999px;
}

.mobile-header {
    display: none;
}

.site-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 10002;
    width: min(390px, 88vw);
    height: 100dvh;
    padding: 24px;
    background: #0B1024;
    color: #EEF2FF;
    transform: translateX(104%);
    transition: transform .24s ease;
    overflow-y: auto;
}

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

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: rgba(5,9,24,.58);
    opacity: 0;
    transition: opacity .22s ease;
}

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

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,.12);
}

.drawer-close {
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 14px;
    color: #FFFFFF;
    background: rgba(255,255,255,.1);
    font-size: 27px;
    cursor: pointer;
}

.drawer-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 22px 0;
}

.drawer-nav a {
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(255,255,255,.06);
    text-decoration: none;
    color: #EEF2FF;
}

.drawer-nav a:hover {
    background: rgba(0,212,255,.16);
}

.drawer-note {
    padding: 18px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(91,108,255,.22), rgba(0,212,255,.12));
}

.drawer-note p {
    margin: 8px 0 0;
    color: #C7D0EC;
    font-size: 14px;
}

.site-main {
    min-height: 70vh;
}

.container {
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
}

.narrow {
    width: min(860px, calc(100% - 40px));
    margin: 0 auto;
}

.section {
    padding: 84px 0;
}

.section-tight {
    padding: 52px 0;
}

.section-soft {
    background: linear-gradient(180deg, rgba(234,247,255,.72), rgba(245,247,255,.3));
}

.section-dark {
    background: #11182F;
    color: #EEF2FF;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 30px;
}

.section-heading > div:first-child {
    max-width: 760px;
}

.section-kicker,
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    color: #B78300;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .12em;
}

.section-kicker::before,
.eyebrow::before {
    content: "";
    width: 26px;
    height: 3px;
    border-radius: 999px;
    background: var(--gradient);
}

h1,
h2,
h3,
h4,
.section-title {
    margin-top: 0;
    color: var(--title);
    line-height: 1.28;
}

h1 {
    font-size: clamp(42px, 7vw, 76px);
    margin-bottom: 20px;
}

h2 {
    font-size: clamp(28px, 4vw, 44px);
    margin-bottom: 14px;
}

h3 {
    font-size: 22px;
    margin-bottom: 10px;
}

p {
    margin-top: 0;
}

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

.muted {
    color: var(--muted);
}

.text-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
}

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

.hero {
    position: relative;
    overflow: hidden;
    padding: 88px 0 76px;
    background:
        radial-gradient(circle at 16% 12%, rgba(255,200,87,.28), transparent 25%),
        radial-gradient(circle at 83% 22%, rgba(0,212,255,.22), transparent 28%),
        linear-gradient(135deg, #F3EEFF 0%, #EDF8FF 48%, #FFF1F7 100%);
}

.hero::after {
    content: "";
    position: absolute;
    width: 380px;
    height: 380px;
    right: -180px;
    bottom: -200px;
    border-radius: 50%;
    background: rgba(122,92,255,.12);
}

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

.hero-copy p {
    max-width: 660px;
    color: #4F5B78;
    font-size: 17px;
}

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

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

.hero-points span,
.tag,
.badge,
.pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
}

.hero-points span {
    padding: 8px 13px;
    color: #33405F;
    background: rgba(255,255,255,.75);
    border: 1px solid rgba(91,108,255,.14);
    font-size: 14px;
}

.hero-visual {
    position: relative;
}

.hero-visual::before {
    content: "";
    position: absolute;
    inset: 8% -5% -4% 8%;
    border-radius: 36px;
    background: linear-gradient(135deg, rgba(91,108,255,.24), rgba(0,212,255,.17));
    transform: rotate(4deg);
}

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

.hero-visual img {
    border-radius: 34px;
    box-shadow: 0 34px 70px rgba(43,54,105,.2);
}

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

.highlight-strip {
    position: relative;
    z-index: 3;
    margin-top: -28px;
}

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    overflow: hidden;
}

.highlight-item {
    padding: 24px;
    background: #FFFFFF;
    border-right: 1px solid var(--border);
}

.highlight-item:last-child {
    border-right: 0;
}

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

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

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

.channel-pill {
    padding: 18px;
    background: rgba(255,255,255,.82);
    border: 1px solid var(--border);
    border-radius: 20px;
}

.channel-pill strong {
    display: block;
    color: var(--title);
}

.channel-pill span {
    display: block;
    min-height: 54px;
    margin: 6px 0;
    color: var(--muted);
    font-size: 13px;
}

.split,
.split-reverse {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 52px;
}

.split-reverse .media {
    order: 2;
}

.media {
    position: relative;
}

.media img {
    border-radius: 28px;
    box-shadow: var(--shadow);
    background: #FFFFFF;
}

.content-box {
    padding: 34px;
    border-radius: 28px;
    background: rgba(255,255,255,.9);
    border: 1px solid var(--border);
}

.feature-list {
    display: grid;
    gap: 13px;
    margin: 22px 0;
}

.feature-list div {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.feature-list span {
    flex: 0 0 30px;
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    color: #FFFFFF;
    background: var(--gradient);
    font-weight: 800;
}

.two-col,
.three-col,
.four-col,
.review-grid,
.faq-grid {
    display: grid;
    gap: 24px;
}

.two-col { grid-template-columns: repeat(2, 1fr); }
.three-col { grid-template-columns: repeat(3, 1fr); }
.four-col { grid-template-columns: repeat(4, 1fr); }
.review-grid { grid-template-columns: repeat(3, 1fr); }
.faq-grid { grid-template-columns: repeat(2, 1fr); }

.zone-card,
.service-card,
.feature-card,
.article-card {
    overflow: hidden;
}

.zone-card img,
.service-card img,
.article-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: contain;
    background: linear-gradient(135deg, #F1EEFF, #ECFAFF);
}

.zone-card-body,
.service-card-body,
.article-card-body {
    padding: 26px;
}

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

.inline-list {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin: 18px 0;
}

.inline-list span,
.tag,
.badge {
    padding: 6px 11px;
    color: #42506F;
    background: var(--light-blue);
    font-size: 13px;
}

.service-card:nth-child(2) .inline-list span,
.zone-card:nth-child(2) .inline-list span {
    background: #F2EEFF;
}

.service-card:nth-child(3) .inline-list span,
.zone-card:nth-child(3) .inline-list span {
    background: var(--light-gold);
}

.safety-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.safety-card {
    display: grid;
    grid-template-columns: .8fr 1.2fr;
    align-items: center;
    gap: 24px;
    padding: 26px;
    border-radius: 28px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.safety-card img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 20px;
}

.review-card {
    padding: 26px;
}

.review-card p {
    color: #4F5B78;
}

.review-meta {
    display: flex;
    justify-content: space-between;
    color: var(--soft);
    font-size: 13px;
}

.faq-item {
    padding: 24px;
    box-shadow: 0 14px 34px rgba(25,43,91,.1);
}

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

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

.notice {
    padding: 30px;
    border-radius: 26px;
    color: #4F3A00;
    background: linear-gradient(135deg, #FFF4D6, #FFF9EB);
    border: 1px solid rgba(255,200,87,.45);
}

.notice h2,
.notice h3 {
    color: #4F3A00;
}

.cta-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    padding: 42px;
    color: #FFFFFF;
    background: linear-gradient(135deg, #16213E, #3C3477 56%, #13566A);
    border-radius: 32px;
    overflow: hidden;
}

.cta-panel h2,
.cta-panel h3 {
    color: #FFFFFF;
}

.cta-panel p {
    max-width: 760px;
    margin-bottom: 0;
    color: #D6DDF2;
}

.page-hero {
    position: relative;
    padding: 72px 0 58px;
    background:
        radial-gradient(circle at 15% 20%, rgba(255,200,87,.2), transparent 24%),
        radial-gradient(circle at 85% 12%, rgba(0,212,255,.18), transparent 25%),
        linear-gradient(135deg, #F4EFFF, #EEF9FF 55%, #FFF2F7);
}

.page-hero-grid {
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    align-items: center;
    gap: 50px;
}

.page-hero h1 {
    font-size: clamp(38px, 6vw, 62px);
}

.page-hero img {
    width: 100%;
    max-height: 460px;
    object-fit: contain;
    border-radius: 28px;
    background: rgba(255,255,255,.55);
    box-shadow: var(--shadow);
}

.page-hero p {
    color: #4E5A76;
    font-size: 17px;
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 32px;
    align-items: start;
}

.prose {
    padding: 36px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: var(--shadow);
}

.prose h2 {
    margin-top: 34px;
    font-size: 28px;
}

.prose h2:first-child {
    margin-top: 0;
}

.prose h3 {
    margin-top: 26px;
    font-size: 21px;
}

.prose p,
.prose li {
    color: #4F5B78;
}

.prose ul {
    padding-left: 22px;
}

.side-stack {
    display: grid;
    gap: 20px;
    position: sticky;
    top: 96px;
}

.side-card {
    padding: 24px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: 0 14px 34px rgba(25,43,91,.1);
}

.side-card h3 {
    font-size: 19px;
}

.side-card a {
    display: block;
    padding: 8px 0;
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px dashed rgba(91,108,255,.18);
}

.side-card a:last-child {
    border-bottom: 0;
}

.steps {
    counter-reset: step;
    display: grid;
    gap: 16px;
}

.step {
    position: relative;
    padding: 22px 22px 22px 72px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 20px;
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 20px;
    top: 20px;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    background: var(--gradient);
    border-radius: 13px;
    font-weight: 800;
}

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

.contact-card {
    padding: 26px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

.site-footer {
    padding: 68px 0 0;
    color: #EEF2FF;
    background: #0B1024;
}

.footer-inner {
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.05fr 1.95fr;
    gap: 70px;
}

.footer-logo {
    margin-bottom: 18px;
}

.footer-brand p {
    max-width: 420px;
    color: #AEB8D3;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

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

.footer-links a {
    display: block;
    margin: 9px 0;
    color: #AEB8D3;
    text-decoration: none;
    font-size: 14px;
}

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

.footer-bottom {
    margin-top: 48px;
    padding: 20px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,.09);
}

.footer-bottom p {
    margin: 0;
    color: #8F9AB7;
    font-size: 13px;
}

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

@media (max-width: 1080px) {
    .nav-core {
        gap: 0;
    }
    .nav-core a {
        padding: 8px 9px;
        font-size: 14px;
    }
    .hero-grid,
    .page-hero-grid {
        gap: 34px;
    }
    .channel-pills {
        grid-template-columns: repeat(3, 1fr);
    }
    .highlight-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .highlight-item:nth-child(2) {
        border-right: 0;
    }
    .highlight-item:nth-child(-n+2) {
        border-bottom: 1px solid var(--border);
    }
    .review-grid,
    .three-col,
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .safety-panel {
        grid-template-columns: 1fr;
    }
    .article-layout {
        grid-template-columns: 1fr;
    }
    .side-stack {
        position: static;
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .desktop-header {
        display: none;
    }
    .mobile-header {
        display: flex;
        min-height: 66px;
    }
    .mobile-logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }
    .mobile-logo img {
        max-width: 38px;
        max-height: 38px;
    }
    .mobile-logo span {
        display: none;
    }
    .mobile-cta {
        min-height: 40px;
        padding: 0 16px;
        font-size: 13px;
    }
    .hero,
    .page-hero {
        padding-top: 58px;
    }
    .hero-grid,
    .page-hero-grid,
    .split,
    .split-reverse {
        grid-template-columns: 1fr;
    }
    .split-reverse .media {
        order: initial;
    }
    .hero-copy {
        text-align: center;
    }
    .hero-copy p,
    .hero-copy .lead {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-actions,
    .hero-points {
        justify-content: center;
    }
    .hero-visual,
    .page-hero img {
        max-width: 680px;
        margin: 0 auto;
    }
    .two-col,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    .four-col {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    .cta-panel {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    body {
        padding-bottom: calc(70px + env(safe-area-inset-bottom));
    }
    .container,
    .narrow,
    .header-inner,
    .footer-inner {
        width: min(100% - 28px, 1200px);
    }
    .section {
        padding: 60px 0;
    }
    .section-tight {
        padding: 42px 0;
    }
    h1 {
        font-size: 42px;
    }
    h2 {
        font-size: 30px;
    }
    .hero {
        padding: 46px 0 58px;
    }
    .hero-copy p,
    .page-hero p {
        font-size: 15px;
    }
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-actions a {
        width: 100%;
    }
    .highlight-strip {
        margin-top: -18px;
    }
    .highlight-grid,
    .channel-pills,
    .review-grid,
    .three-col,
    .four-col,
    .contact-grid,
    .side-stack {
        grid-template-columns: 1fr;
    }
    .highlight-item {
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }
    .highlight-item:last-child {
        border-bottom: 0;
    }
    .channel-pill span {
        min-height: auto;
    }
    .section-heading {
        align-items: flex-start;
        flex-direction: column;
    }
    .content-box,
    .prose {
        padding: 24px;
    }
    .safety-card {
        grid-template-columns: 1fr;
    }
    .cta-panel {
        padding: 30px 24px;
    }
    .drawer-nav {
        grid-template-columns: 1fr;
    }
    .site-drawer {
        width: 88vw;
        right: auto;
        left: 0;
        transform: translateX(-104%);
    }
    .site-drawer.is-open {
        transform: translateX(0);
    }
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
    .mobile-bottom-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 9998;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
        background: rgba(11,16,36,.96);
        border-top: 1px solid rgba(255,255,255,.1);
        backdrop-filter: blur(12px);
    }
    .mobile-bottom-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2px;
        color: #EEF2FF;
        text-decoration: none;
        font-size: 12px;
    }
    .mobile-bottom-nav span {
        color: var(--cyan);
        font-size: 18px;
        line-height: 1;
    }
}