* {
    box-sizing: border-box;
}

:root {
    --bg: #F5F7FF;
    --ink: #1F2740;
    --muted: #66708A;
    --soft: #9AA4BA;
    --title: #131A35;
    --primary: #5B6CFF;
    --primary-2: #7A5CFF;
    --neon: #00D4FF;
    --navy: #16213E;
    --gold: #FFC857;
    --rose: #D94F70;
    --card: #FFFFFF;
    --dark-card: #11182F;
    --border: rgba(91,108,255,0.18);
    --shadow: 0 20px 46px rgba(25,43,91,0.14);
    --radius: 22px;
    --max: 1240px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    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;
}

a {
    color: inherit;
}

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

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

.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 9999;
    background: rgba(12,18,40,0.94);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 26px rgba(25,43,91,0.16);
}

.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    min-height: 72px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #FFFFFF;
    flex: 0 0 auto;
}

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

.site-logo strong {
    font-size: 19px;
    letter-spacing: .02em;
    white-space: nowrap;
}

.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;
    white-space: nowrap;
    transition: .2s ease;
}

.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: 12px;
    flex: 0 0 auto;
}

.main-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease;
}

.main-btn {
    background: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 48%, #00D4FF 100%);
    color: #FFFFFF;
    box-shadow: 0 14px 32px rgba(91,108,255,0.22);
}

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

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

.compact-btn {
    min-height: 42px;
    padding: 9px 18px;
    font-size: 14px;
}

.menu-toggle,
.drawer-close {
    border: 0;
    background: transparent;
    color: #FFFFFF;
    cursor: pointer;
}

.menu-toggle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    display: grid;
    place-content: center;
    gap: 4px;
}

.menu-toggle span {
    width: 18px;
    height: 2px;
    background: currentColor;
    border-radius: 999px;
    display: block;
}

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

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(5,9,24,.6);
    opacity: 0;
    transition: opacity .22s ease;
}

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

.site-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: min(390px, 92vw);
    height: 100vh;
    z-index: 10001;
    background: #0E1530;
    color: #EEF2FF;
    transform: translateX(102%);
    transition: transform .24s ease;
    padding: 24px;
    overflow-y: auto;
}

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

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

.drawer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #FFFFFF;
    font-weight: 800;
    text-decoration: none;
}

.drawer-brand img {
    width: 42px;
    height: 42px;
    object-fit: contain;
}

.drawer-close {
    width: 42px;
    height: 42px;
    font-size: 30px;
    line-height: 1;
}

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

.drawer-nav a {
    text-decoration: none;
    color: #EEF2FF;
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 14px;
    padding: 11px 12px;
    background: rgba(255,255,255,.035);
}

.drawer-nav a:hover {
    border-color: rgba(0,212,255,.46);
    background: rgba(0,212,255,.1);
}

.drawer-note {
    padding: 18px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(91,108,255,.18), rgba(0,212,255,.12));
    border: 1px solid rgba(0,212,255,.2);
}

.drawer-note p {
    margin: 6px 0 0;
    color: #BDC8E5;
    font-size: 14px;
}

.page-main,
.home-main {
    min-height: 60vh;
}

.section,
.page-section {
    padding: 78px 24px;
}

.section-inner,
.page-container {
    width: min(var(--max), 100%);
    margin: 0 auto;
}

.section-kicker {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

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

.section-title {
    margin: 0;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.2;
}

.section-lead {
    max-width: 780px;
    margin: 18px 0 0;
    color: var(--muted);
    font-size: 17px;
}

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

.hero {
    padding: 72px 24px 58px;
    background:
        radial-gradient(circle at 15% 10%, rgba(122,92,255,.18), transparent 34%),
        radial-gradient(circle at 86% 18%, rgba(0,212,255,.2), transparent 28%),
        linear-gradient(135deg, #F3EFFF 0%, #EEF9FF 52%, #FFF2F8 100%);
    overflow: hidden;
}

.hero-inner {
    width: min(var(--max), 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.02fr .98fr;
    gap: 56px;
    align-items: center;
}

.hero-copy h1 {
    margin: 0;
    font-size: clamp(48px, 8vw, 88px);
    line-height: 1;
    letter-spacing: -.04em;
}

.hero-subtitle {
    margin: 20px 0 10px;
    color: var(--primary-2);
    font-size: clamp(22px, 3vw, 34px);
    font-weight: 800;
}

.hero-copy p {
    margin: 0;
    color: #4F5B78;
    font-size: 17px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.hero-points {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 26px;
}

.hero-points span,
.pill {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255,255,255,.74);
    border: 1px solid rgba(91,108,255,.16);
    color: #44506C;
    font-size: 14px;
}

.hero-visual {
    position: relative;
    min-height: 500px;
    display: grid;
    place-items: center;
}

.hero-visual::before,
.hero-visual::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(2px);
}

.hero-visual::before {
    width: 250px;
    height: 250px;
    background: rgba(91,108,255,.2);
    top: 10px;
    right: 15px;
}

.hero-visual::after {
    width: 180px;
    height: 180px;
    background: rgba(0,212,255,.2);
    bottom: 20px;
    left: 15px;
}

.hero-visual img {
    position: relative;
    z-index: 2;
    max-width: 100%;
    max-height: 520px;
    object-fit: contain;
    filter: drop-shadow(0 26px 50px rgba(42,54,112,.24));
}

.highlight-strip {
    margin-top: -12px;
    padding: 0 24px 30px;
    position: relative;
    z-index: 3;
}

.highlight-grid {
    width: min(var(--max), 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.highlight-item {
    padding: 22px;
    background: rgba(255,255,255,.94);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: 0 14px 30px rgba(25,43,91,.1);
}

.highlight-item strong {
    display: block;
    color: var(--title);
    font-size: 18px;
}

.highlight-item p {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.channel-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.channel-chip {
    flex: 1 1 210px;
    min-width: 0;
    padding: 18px;
    border-radius: 18px;
    background: #FFFFFF;
    border: 1px solid var(--border);
}

.channel-chip strong {
    color: var(--title);
}

.channel-chip p {
    margin: 6px 0;
    color: var(--muted);
    font-size: 14px;
}

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

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

.split-layout,
.page-hero,
.security-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 34px;
    align-items: center;
}

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

.media-frame {
    padding: 18px;
    border-radius: 28px;
    background: linear-gradient(145deg, rgba(91,108,255,.12), rgba(0,212,255,.12));
    border: 1px solid rgba(91,108,255,.16);
}

.media-frame img {
    width: 100%;
    max-height: 480px;
    object-fit: contain;
}

.copy-panel h2 {
    margin: 0 0 18px;
    font-size: clamp(28px, 3vw, 42px);
    line-height: 1.25;
}

.copy-panel p {
    color: var(--muted);
}

.feature-list {
    display: grid;
    gap: 12px;
    margin: 22px 0;
}

.feature-item {
    display: grid;
    grid-template-columns: 36px 1fr;
    gap: 12px;
    align-items: start;
}

.feature-item span {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: #EEF0FF;
    color: var(--primary);
    font-weight: 800;
}

.feature-item strong {
    display: block;
    color: var(--title);
}

.feature-item p {
    margin: 2px 0 0;
    font-size: 14px;
}

.card-grid-2,
.card-grid-3,
.card-grid-4,
.review-grid {
    display: grid;
    gap: 22px;
}

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

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

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

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

.zone-card,
.info-card,
.review-card,
.page-card {
    padding: 24px;
}

.zone-card img,
.info-card img,
.page-card img {
    width: 100%;
    height: 230px;
    object-fit: contain;
    margin-bottom: 18px;
    border-radius: 18px;
    background: linear-gradient(135deg, #F0F2FF, #EAFBFF);
}

.zone-card h3,
.info-card h3,
.page-card h3 {
    margin: 0 0 10px;
    font-size: 23px;
}

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

.link-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 16px;
}

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

.dark-section {
    background: #101832;
    color: #EEF2FF;
}

.dark-section .section-title,
.dark-section h2,
.dark-section h3 {
    color: #FFFFFF;
}

.dark-section .section-lead,
.dark-section p {
    color: #BCC7E1;
}

.security-grid .content-panel {
    padding: 30px;
}

.security-grid .content-panel.dark {
    background: linear-gradient(145deg, #11182F, #1B2850);
    color: #EEF2FF;
    border-color: rgba(255,255,255,.08);
}

.security-grid .content-panel.dark h2,
.security-grid .content-panel.dark h3 {
    color: #FFFFFF;
}

.review-card {
    position: relative;
}

.review-card::before {
    content: "“";
    position: absolute;
    right: 20px;
    top: 8px;
    font-size: 70px;
    line-height: 1;
    color: rgba(91,108,255,.12);
    font-family: Georgia, serif;
}

.review-meta {
    margin-top: 16px;
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
}

.faq-list {
    display: grid;
    gap: 14px;
    margin-top: 28px;
}

.faq-item {
    padding: 0;
    overflow: hidden;
}

.faq-item summary {
    cursor: pointer;
    list-style: none;
    padding: 20px 56px 20px 22px;
    position: relative;
    font-weight: 800;
    color: var(--title);
}

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

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 22px;
    top: 15px;
    color: var(--primary);
    font-size: 28px;
}

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

.faq-item p {
    margin: 0;
    padding: 0 22px 22px;
    color: var(--muted);
}

.notice-band {
    padding: 26px;
    border-radius: 24px;
    background: linear-gradient(135deg, #FFF4D6, #F1F0FF);
    border: 1px solid rgba(255,200,87,.42);
}

.notice-band h2,
.notice-band h3 {
    margin-top: 0;
}

.notice-band p {
    margin-bottom: 0;
    color: #59627A;
}

.page-hero-wrap {
    padding: 62px 24px;
    background:
        radial-gradient(circle at 88% 16%, rgba(0,212,255,.18), transparent 26%),
        linear-gradient(135deg, #F0EDFF 0%, #EEF9FF 54%, #FFF3F8 100%);
}

.page-hero {
    width: min(var(--max), 100%);
    margin: 0 auto;
}

.page-hero-copy h1 {
    margin: 0;
    font-size: clamp(38px, 6vw, 64px);
    line-height: 1.1;
}

.page-hero-copy .lead {
    color: var(--muted);
    font-size: 18px;
    margin: 18px 0 0;
}

.page-hero img {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
}

.page-content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(260px, .6fr);
    gap: 30px;
    align-items: start;
}

.article-card {
    padding: 34px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}

.article-card h2 {
    font-size: 30px;
    margin: 0 0 18px;
}

.article-card h3 {
    margin-top: 28px;
}

.article-card p {
    color: #4F5972;
}

.article-card ul {
    padding-left: 1.2em;
    color: #4F5972;
}

.article-card li + li {
    margin-top: 8px;
}

.side-stack {
    display: grid;
    gap: 20px;
}

.side-card {
    padding: 22px;
    border-radius: 20px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    box-shadow: 0 16px 34px rgba(25,43,91,.1);
}

.side-card h2,
.side-card h3 {
    margin-top: 0;
    font-size: 21px;
}

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

.side-card ul {
    padding-left: 1.15em;
}

.step-list {
    counter-reset: steps;
    display: grid;
    gap: 14px;
    margin: 22px 0;
}

.step-item {
    counter-increment: steps;
    position: relative;
    padding: 18px 18px 18px 64px;
    border-radius: 18px;
    background: #F7F8FF;
    border: 1px solid rgba(91,108,255,.12);
}

.step-item::before {
    content: counter(steps);
    position: absolute;
    left: 18px;
    top: 17px;
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 800;
}

.page-review {
    margin-top: 20px;
    padding: 22px;
    border-left: 4px solid var(--primary);
    background: #F7F8FF;
    border-radius: 0 16px 16px 0;
    color: #59627A;
}

.cta-panel {
    margin-top: 30px;
    padding: 28px;
    border-radius: 24px;
    background: linear-gradient(135deg, #161F44, #263B70);
    color: #EEF2FF;
}

.cta-panel h2,
.cta-panel h3 {
    color: #FFFFFF;
    margin-top: 0;
}

.cta-panel p {
    color: #C7D1E9;
}

.site-footer {
    background: #0B1024;
    color: #EEF2FF;
    padding: 62px 24px 0;
}

.footer-inner {
    width: min(var(--max), 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 2fr;
    gap: 52px;
}

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

.footer-brand p {
    color: #AEB9D4;
    max-width: 420px;
}

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

.footer-links h2 {
    color: #FFFFFF;
    font-size: 16px;
    margin: 0 0 14px;
}

.footer-links a {
    display: block;
    color: #B9C4DF;
    text-decoration: none;
    margin: 8px 0;
    font-size: 14px;
}

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

.footer-bottom {
    width: min(var(--max), 100%);
    margin: 42px auto 0;
    padding: 22px 0;
    border-top: 1px solid rgba(255,255,255,.1);
    color: #96A3C2;
    font-size: 13px;
}

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

@media (max-width: 1040px) {
    .nav-core a:nth-child(3),
    .nav-core a:nth-child(4) {
        display: none;
    }

    .hero-inner,
    .split-layout,
    .page-hero,
    .security-grid {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 380px;
    }

    .highlight-grid,
    .card-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-grid-3,
    .review-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-content-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 760px) {
    body {
        padding-bottom: 72px;
    }

    .header-inner {
        min-height: 64px;
        padding: 0 14px;
        gap: 10px;
    }

    .mobile-menu-toggle {
        display: grid;
        order: 1;
    }

    .site-logo {
        order: 2;
        margin: 0 auto;
    }

    .site-logo strong {
        font-size: 16px;
    }

    .site-logo img {
        width: 38px;
        max-height: 38px;
    }

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

    .header-actions {
        order: 3;
    }

    .compact-btn {
        min-height: 38px;
        padding: 8px 13px;
        font-size: 13px;
    }

    .hero {
        padding: 48px 18px 38px;
    }

    .hero-copy h1 {
        font-size: clamp(48px, 16vw, 72px);
    }

    .hero-subtitle {
        font-size: 24px;
    }

    .hero-visual {
        min-height: 320px;
    }

    .section,
    .page-section {
        padding: 56px 18px;
    }

    .section-title {
        font-size: 32px;
    }

    .highlight-strip {
        padding: 0 18px 24px;
    }

    .highlight-grid,
    .card-grid-2,
    .card-grid-3,
    .card-grid-4,
    .review-grid {
        grid-template-columns: 1fr;
    }

    .page-hero-wrap {
        padding: 46px 18px;
    }

    .page-hero-copy h1 {
        font-size: 42px;
    }

    .article-card {
        padding: 24px;
    }

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

    .mobile-bottom-nav {
        position: fixed;
        left: 10px;
        right: 10px;
        bottom: 10px;
        z-index: 9998;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        padding: 8px;
        border-radius: 20px;
        background: rgba(11,16,36,.95);
        backdrop-filter: blur(12px);
        box-shadow: 0 16px 40px rgba(11,16,36,.28);
    }

    .mobile-bottom-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2px;
        padding: 6px 2px;
        border-radius: 14px;
        color: #B9C4DF;
        text-decoration: none;
        font-size: 12px;
    }

    .mobile-bottom-nav a span {
        font-size: 18px;
    }

    .mobile-bottom-nav a.active {
        color: #FFFFFF;
        background: rgba(91,108,255,.28);
    }

    .site-drawer {
        left: 0;
        right: auto;
        transform: translateX(-102%);
    }

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

@media (max-width: 420px) {
    .site-logo strong {
        display: none;
    }

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

    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
}