:root {
    --page-bg: #EAF2FB;
    --surface: #FFFFFF;
    --soft: #F4F8FF;
    --soft-blue: #EDF5FF;
    --muted-blue: #E1ECF8;
    --blue: #2FA8F7;
    --bright-blue: #45C7FF;
    --deep-blue: #137CD8;
    --title: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --border: rgba(47,168,247,0.14);
    --footer: #102B46;
    --footer-text: #EAF6FF;
    --shadow: 0 20px 52px rgba(33, 93, 142, 0.12);
    --small-shadow: 0 12px 28px rgba(33, 93, 142, 0.09);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--page-bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow-y: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; touch-action: manipulation; }
button { font: inherit; touch-action: manipulation; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; color: var(--title); line-height: 1.28; }
ul { margin: 0; padding-left: 1.15em; }

.skip-link {
    position: fixed;
    left: 16px;
    top: -80px;
    z-index: 12000;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--deep-blue);
    color: #fff;
}
.skip-link:focus { top: 12px; }

.main-btn {
    display: inline-flex;
    min-width: 88px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%);
    color: #FFFFFF;
    font-weight: 700;
    box-shadow: 0 12px 26px rgba(19,124,216,0.18);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(19,124,216,0.24); }
.text-link { color: var(--deep-blue); font-weight: 700; }
.text-link:hover { text-decoration: underline; }

.site-header { width: 100%; }
.desktop-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 9000;
    height: 76px;
    background: rgba(255,255,255,.9);
    border-bottom: 1px solid rgba(47,168,247,.08);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}
.header-shell {
    width: min(calc(100% - 40px), var(--container));
    height: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 210px 1fr 120px;
    align-items: center;
    gap: 24px;
}
.brand-logo, .mobile-logo, .drawer-logo, .footer-logo { display: inline-flex; align-items: center; }
.brand-logo img { width: 150px; height: 48px; object-fit: contain; }
.core-nav { display: flex; align-items: stretch; justify-content: center; height: 100%; gap: 12px; white-space: nowrap; }
.core-nav__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 0 14px;
    color: var(--muted);
    font-weight: 650;
}
.core-nav__link::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 12px;
    height: 3px;
    border-radius: 999px;
    background: var(--blue);
    transition: left .2s ease, right .2s ease;
}
.core-nav__link:hover, .core-nav__link.is-active { color: var(--deep-blue); }
.core-nav__link:hover::after, .core-nav__link.is-active::after { left: 22%; right: 22%; }
.header-shell > .main-btn { justify-self: end; }

.channel-bar {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    z-index: 8900;
    height: 52px;
    display: flex;
    align-items: center;
    background: rgba(244,248,255,.92);
    border-bottom: 1px solid rgba(47,168,247,.08);
    backdrop-filter: blur(12px);
}
.channel-scroll {
    width: min(calc(100% - 40px), var(--container));
    margin: 0 auto;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
}
.channel-scroll::-webkit-scrollbar { display: none; }
.channel-link {
    flex: 0 0 auto;
    padding: 7px 13px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.3;
}
.channel-link:hover, .channel-link.is-active { background: #fff; color: var(--deep-blue); box-shadow: 0 6px 18px rgba(33,93,142,.08); }

.mobile-header, .drawer-mask, .mobile-drawer, .mobile-bottom-nav { display: none; }
.site-main { padding-top: 128px; }

.section { padding: 74px 20px; }
.section--compact { padding-top: 42px; padding-bottom: 42px; }
.section--soft { background: var(--soft); }
.section--white { background: var(--surface); }
.container { width: min(100%, var(--container)); margin: 0 auto; }
.section-heading { max-width: 760px; margin-bottom: 30px; }
.section-heading.centered { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
    display: inline-flex;
    margin-bottom: 12px;
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--soft-blue);
    color: var(--deep-blue);
    font-size: 13px;
    font-weight: 750;
    letter-spacing: .08em;
}
.section-heading h2 { margin-bottom: 12px; font-size: clamp(28px, 4vw, 42px); }
.section-heading p { color: var(--muted); font-size: 17px; }

.banner-wrap { padding: 34px 20px 52px; background: linear-gradient(180deg, #EAF2FB 0%, #F4F8FF 100%); }
.banner-slider {
    position: relative;
    z-index: 1;
    width: min(100%, var(--container));
    min-height: 360px;
    margin: 0 auto;
    overflow: hidden;
    border: 12px solid #fff;
    border-radius: 34px;
    background: #fff;
    box-shadow: var(--shadow);
}
.slider-track { position: relative; width: 100%; aspect-ratio: 2.3 / 1; min-height: 336px; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease; }
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: #EDF5FF; }
.slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 3;
    width: 48px;
    height: 48px;
    margin-top: -24px;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,.9);
    color: var(--deep-blue);
    box-shadow: 0 10px 24px rgba(16,43,70,.15);
    cursor: pointer;
}
.slider-arrow--prev { left: 22px; }
.slider-arrow--next { right: 22px; }
.slider-dots {
    position: absolute;
    left: 50%;
    bottom: 20px;
    z-index: 3;
    display: flex;
    gap: 9px;
    transform: translateX(-50%);
}
.slider-dot { width: 11px; height: 11px; padding: 0; border: 2px solid #fff; border-radius: 50%; background: rgba(19,124,216,.35); cursor: pointer; }
.slider-dot.is-active { width: 28px; border-radius: 999px; background: var(--deep-blue); }

.hero-grid, .feature-split, .dual-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 34px; align-items: center; }
.hero-copy, .surface-card, .info-card, .content-card, .faq-item, .review-card, .stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--small-shadow);
}
.hero-copy { padding: clamp(28px, 5vw, 58px); border-radius: var(--radius-xl); }
.hero-copy h1 { margin-bottom: 18px; font-size: clamp(34px, 6vw, 58px); }
.hero-copy .lead { color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }
.secondary-btn {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: 1px solid rgba(47,168,247,.3);
    border-radius: 999px;
    color: var(--deep-blue);
    background: var(--soft);
    font-weight: 700;
}
.hero-visual { min-height: 360px; padding: 24px; border-radius: var(--radius-xl); background: linear-gradient(145deg, #fff, #EAF4FF); box-shadow: var(--shadow); }
.hero-visual img { width: 100%; height: 100%; max-height: 480px; object-fit: contain; border-radius: 24px; }

.quick-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.quick-card { min-height: 190px; padding: 25px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--border); box-shadow: var(--small-shadow); }
.quick-card h3 { margin-bottom: 10px; font-size: 21px; }
.quick-card p { color: var(--muted); }

.notice-strip {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 24px;
    align-items: center;
    padding: 26px 30px;
    border-radius: var(--radius-lg);
    background: linear-gradient(115deg, #137CD8, #2FA8F7 58%, #45C7FF);
    color: #fff;
    box-shadow: 0 18px 36px rgba(19,124,216,.2);
}
.notice-strip strong { font-size: 20px; }
.notice-strip p { margin: 0; opacity: .94; }

.dashboard-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.stat-card { padding: 26px; border-radius: var(--radius-lg); }
.stat-card h3 { margin-bottom: 10px; font-size: 19px; }
.stat-card p { margin: 0; color: var(--muted); }

.content-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.content-grid.two { grid-template-columns: repeat(2, minmax(0,1fr)); }
.content-grid.four { grid-template-columns: repeat(4, minmax(0,1fr)); }
.content-card { overflow: hidden; border-radius: var(--radius-lg); }
.content-card__media { height: 210px; padding: 14px; background: linear-gradient(145deg, #EDF5FF, #fff); }
.content-card__media img { width: 100%; height: 100%; object-fit: contain; border-radius: 16px; }
.content-card__body { padding: 26px; }
.content-card h3 { margin-bottom: 10px; font-size: 22px; }
.content-card p { color: var(--muted); }
.content-card ul { color: var(--muted); margin-bottom: 18px; }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.review-card { padding: 26px; border-radius: var(--radius-lg); }
.review-card p { color: var(--text); }
.review-card strong { color: var(--deep-blue); font-size: 14px; }

.faq-list { display: grid; gap: 14px; }
.faq-item { overflow: hidden; border-radius: 18px; }
.faq-question {
    width: 100%;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 22px;
    border: 0;
    background: #fff;
    color: var(--text);
    text-align: left;
    font-weight: 750;
    cursor: pointer;
}
.faq-question::after { content: "+"; color: var(--blue); font-size: 25px; line-height: 1; }
.faq-item.is-open .faq-question::after { content: "−"; }
.faq-answer { display: none; padding: 0 22px 22px; color: var(--muted); }
.faq-item.is-open .faq-answer { display: block; }
.faq-answer p:last-child { margin-bottom: 0; }

.inner-hero { padding: 50px 20px 60px; background: linear-gradient(180deg, #EAF2FB, #F4F8FF); }
.inner-hero .hero-grid { width: min(100%, var(--container)); margin: 0 auto; }
.inner-hero--no-image .hero-grid { grid-template-columns: 1fr; }
.inner-hero--no-image .hero-copy { max-width: 900px; margin: 0 auto; text-align: center; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--deep-blue); }

.surface-card { padding: 30px; border-radius: var(--radius-lg); }
.surface-card h2, .surface-card h3 { margin-bottom: 12px; }
.surface-card p, .surface-card li { color: var(--muted); }
.feature-list { display: grid; gap: 14px; margin-top: 20px; }
.feature-item { padding: 18px 20px; border-radius: 16px; background: var(--soft); }
.feature-item strong { display: block; margin-bottom: 4px; color: var(--deep-blue); }
.steps { counter-reset: step; display: grid; gap: 16px; }
.step { position: relative; padding: 22px 22px 22px 78px; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 22px; top: 22px; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--deep-blue); font-weight: 800; }
.step h3 { margin-bottom: 6px; font-size: 19px; }
.step p { margin: 0; color: var(--muted); }

.responsible-note { padding: 28px 30px; border-radius: var(--radius-lg); background: #102B46; color: #EAF6FF; }
.responsible-note h2 { margin-bottom: 10px; color: #fff; }
.responsible-note p { margin: 0; color: #DCEEFF; }

.site-footer { background: var(--footer); color: var(--footer-text); }
.footer-shell { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; padding: 62px 0 42px; display: grid; grid-template-columns: 2fr repeat(3,1fr); gap: 40px; }
.footer-logo img { width: 154px; height: 50px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 440px; margin-top: 18px; color: #CDE0F2; }
.footer-column { display: grid; align-content: start; gap: 8px; }
.footer-column h2 { margin-bottom: 8px; color: #fff; font-size: 17px; }
.footer-column a { color: #CDE0F2; }
.footer-column a:hover { color: #fff; }
.footer-reminder { border-top: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-reminder p { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; padding: 20px 0; color: #CDE0F2; text-align: center; font-size: 14px; }
.footer-bottom { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; padding: 20px 0; display: flex; justify-content: space-between; gap: 20px; color: #9DB7CE; font-size: 13px; }

.floating-service { position: fixed; right: 18px; top: 50%; z-index: 8000; display: grid; gap: 7px; width: 112px; padding: 12px; border: 1px solid var(--border); border-radius: 20px; background: rgba(255,255,255,.94); box-shadow: var(--small-shadow); transform: translateY(-50%); }
.floating-service > a:not(.main-btn), .floating-service button { min-height: 38px; display: grid; place-items: center; padding: 6px; border: 0; border-radius: 12px; background: var(--soft); color: var(--deep-blue); font-size: 13px; font-weight: 700; cursor: pointer; }
.floating-service > .main-btn { min-width: 0; padding: 8px; }

@media (max-width: 1100px) {
    .header-shell { grid-template-columns: 170px 1fr 100px; gap: 12px; }
    .core-nav { gap: 4px; }
    .core-nav__link { padding: 0 9px; font-size: 14px; }
    .floating-service { display: none; }
    .content-grid.four { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 820px) {
    .desktop-header, .channel-bar, .floating-service { display: none; }
    .mobile-header {
        position: fixed;
        inset: 0 0 auto 0;
        z-index: 9000;
        height: 68px;
        display: grid;
        grid-template-columns: 54px 1fr 88px;
        align-items: center;
        gap: 10px;
        padding: 0 14px;
        background: rgba(255,255,255,.95);
        border-bottom: 1px solid var(--border);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
    }
    .menu-button { width: 44px; height: 44px; display: grid; place-content: center; gap: 5px; padding: 0; border: 0; border-radius: 13px; background: var(--soft); cursor: pointer; }
    .menu-button span { width: 22px; height: 2px; border-radius: 2px; background: var(--deep-blue); }
    .mobile-logo { justify-self: center; }
    .mobile-logo img { width: 128px; height: 42px; object-fit: contain; }
    .mobile-header > .main-btn { position: relative; z-index: 2; min-width: 76px; min-height: 44px; padding: 9px 14px; }
    .drawer-mask { display: none; position: fixed; inset: 0; z-index: 9990; background: rgba(16,43,70,.48); pointer-events: none; }
    .drawer-mask.is-open { display: block; pointer-events: auto; }
    .mobile-drawer { position: fixed; inset: 0 auto 0 0; z-index: 10000; display: block; width: min(86vw, 360px); overflow-y: auto; overscroll-behavior: contain; background: #fff; box-shadow: 24px 0 60px rgba(16,43,70,.22); transform: translateX(-105%); transition: transform .25s ease; visibility: hidden; }
    .mobile-drawer.is-open { transform: translateX(0); visibility: visible; }
    .drawer-head { position: sticky; top: 0; z-index: 2; height: 72px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; background: #fff; border-bottom: 1px solid var(--border); }
    .drawer-logo img { width: 130px; height: 44px; object-fit: contain; }
    .drawer-close { width: 44px; height: 44px; border: 0; border-radius: 14px; background: var(--soft); color: var(--deep-blue); font-size: 30px; line-height: 1; cursor: pointer; }
    .drawer-nav { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; padding: 18px; }
    .drawer-link { min-height: 46px; display: flex; align-items: center; justify-content: center; padding: 10px 8px; border-radius: 14px; background: var(--soft); color: var(--muted); font-size: 14px; }
    .drawer-link.is-active { background: var(--soft-blue); color: var(--deep-blue); font-weight: 750; }
    .drawer-note { margin: 0 18px 26px; padding: 16px; border-radius: 16px; background: #102B46; color: #EAF6FF; font-size: 13px; }
    .site-main { padding-top: 68px; }
    .mobile-bottom-nav { position: fixed; inset: auto 0 0 0; z-index: 8500; height: calc(62px + env(safe-area-inset-bottom)); display: grid; grid-template-columns: repeat(4,1fr); padding: 6px 12px calc(6px + env(safe-area-inset-bottom)); background: rgba(255,255,255,.96); border-top: 1px solid var(--border); backdrop-filter: blur(16px); }
    .mobile-bottom-nav a { min-width: 44px; min-height: 44px; display: grid; place-items: center; border-radius: 12px; color: var(--muted); font-size: 13px; font-weight: 700; }
    .mobile-bottom-nav a.is-active { background: var(--soft-blue); color: var(--deep-blue); }
    .site-footer { padding-bottom: calc(62px + env(safe-area-inset-bottom)); }
    .section { padding: 54px 16px; }
    .banner-wrap { padding: 20px 14px 36px; }
    .banner-slider { min-height: 0; border-width: 7px; border-radius: 24px; }
    .slider-track { min-height: 0; aspect-ratio: 1.75 / 1; }
    .slider-arrow { width: 44px; height: 44px; margin-top: -22px; }
    .slider-arrow--prev { left: 10px; }
    .slider-arrow--next { right: 10px; }
    .slider-dots { bottom: 12px; }
    .hero-grid, .feature-split, .dual-grid { grid-template-columns: 1fr; }
    .hero-visual { min-height: 260px; order: -1; }
    .quick-grid, .content-grid, .content-grid.two, .content-grid.four, .review-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .dashboard-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .notice-strip { grid-template-columns: 1fr; gap: 8px; }
    .footer-shell { grid-template-columns: repeat(2,1fr); }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
    .section-heading p, .hero-copy .lead { font-size: 16px; }
    .hero-copy { padding: 28px 22px; border-radius: 24px; }
    .hero-copy h1 { font-size: 36px; }
    .hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
    .hero-actions a { width: 100%; }
    .quick-grid, .content-grid, .content-grid.two, .content-grid.four, .review-grid, .dashboard-grid { grid-template-columns: 1fr; }
    .content-card__media { height: 190px; }
    .footer-shell { grid-template-columns: 1fr; gap: 28px; }
    .footer-brand { grid-column: auto; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
}