@charset "UTF-8";
:root {
    --nav: clamp(218px,16vw,274px);
    --mint:#78d8cc;
    --purple:#8e7cda;
    --ink:#2d2b42;
    --muted:#6f6d80;
    --paper:#f8f7fc;
    --line:#deddf0;
    --night:#302e4a;
    --white:#fff;
}
* {
    box-sizing:border-box;
}
html {
    scroll-behavior:smooth;
    scroll-padding-top:80px;
}
body {
    margin:0;
    color:var(--ink);
    background:var(--paper);
    font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
    -webkit-tap-highlight-color:transparent;
}
a,button,summary {
    color:inherit;
    -webkit-tap-highlight-color:transparent;
}
a {
    text-decoration:none;
}
img {
    display:block;
    max-width:100%;
}
.topbar {
    position:fixed;
    z-index:30;
    top:0;
    right:0;
    left:0;
    height:64px;
    display:flex;
    align-items:center;
    padding:0 18px;
    color:var(--white);
    background:var(--purple)
}
.brand,.footer-brand {
    display:flex;
    align-items:center;
    gap:10px
}
.brand img,.footer-brand img {
    width:38px;
    height:38px;
    object-fit:cover;
    border-radius:9px;
    background:var(--white)
}
.brand span,.footer-brand span {
    display:grid;
    gap:3px
}
.brand b,.footer-brand b {
    font-size:17px;
    line-height:1
}
.brand small,.footer-brand small {
    font-size:11px;
    line-height:1;
    opacity:.8
}
.top-download {
    margin-left:auto;
    padding:11px 16px;
    color:var(--ink);
    font-size:13px;
    font-weight:900;
    background:var(--mint);
    border-radius:5px
}
.menu-toggle {
    display:none;
    width:40px;
    height:38px;
    margin-left:10px;
    padding:8px;
    background:transparent;
    border:1px solid var(--white);
    border-radius:5px
}
.menu-toggle span {
    display:block;
    height:2px;
    margin:3px 0;
    background:var(--white)
}
.channel-nav {
    position:fixed;
    z-index:20;
    top:64px;
    bottom:0;
    left:0;
    width:var(--nav);
    display:flex;
    flex-direction:column;
    padding:18px 10px 25px;
    background:var(--white);
    border-right:1px solid var(--line)
}
.channel-nav ul {
    display:grid;
    gap:10px;
    margin:0;
    padding:0;
    list-style:none
}
.channel-nav a {
    display:flex;
    align-items:center;
    min-height:52px;
    padding:0 14px;
    font-size:16px;
    font-weight:900;
    border:2px solid var(--ink)
}
.channel-nav a:hover,.channel-nav .is-active {
    color:var(--white);
    background:var(--purple);
    border-color:var(--purple)
}
.channel-nav em {
    margin-left:auto;
    font-size:11px;
    font-style:normal
}
.channel-nav>p {
    margin:auto 14px 0;
    padding-top:28px;
    color:var(--muted);
    font-size:13px;
    font-style:italic;
    line-height:1.8;
    border-top:1px solid var(--line)
}
.site-main {
    margin-left:var(--nav);
    padding-top:64px;
    overflow:hidden
}
.hero {
    position:relative;
    min-height:min(760px,calc(100vh - 64px));
    display:flex;
    align-items:center;
    padding:80px clamp(42px,8vw,145px);
    color:var(--white);
    background:url("../images/bjt.jpg") center/cover no-repeat
}
.hero:after {
    position:absolute;
    inset:0;
    content:"";
    background:linear-gradient(90deg,rgba(39,37,61,.9),rgba(39,37,61,.72) 45%,rgba(39,37,61,.12))
}
.hero-copy {
    position:relative;
    z-index:1;
    width:min(640px,100%);
    padding:clamp(25px,4vw,52px);
    background:rgba(42,39,65,.68);
    border-left:7px solid var(--mint)
}
.eyebrow,.section-kicker {
    margin:0 0 12px;
    color:var(--mint);
    font-size:12px;
    font-weight:900;
    letter-spacing:1.5px
}
.hero h1 {
    margin:0;
    font-size:clamp(58px,8vw,118px);
    line-height:.88;
    letter-spacing:-5px
}
.hero-slogan {
    display:inline-block;
    margin:25px 0 17px;
    padding:7px 12px 9px;
    color:var(--ink);
    font-size:clamp(29px,3.6vw,52px);
    font-weight:900;
    line-height:1.08;
    background:var(--mint)
}
.hero-text {
    margin:0;
    font-size:16px;
    font-weight:600;
    line-height:1.8
}
.hero-tags {
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin:19px 0
}
.hero-tags span {
    padding:6px 10px;
    font-size:12px;
    font-weight:700;
    border:1px solid rgba(255,255,255,.8);
    border-radius:5px
}
.hero-download {
    display:inline-flex;
    gap:18px;
    align-items:center;
    padding:15px 20px;
    color:var(--ink);
    font-weight:900;
    background:var(--white);
    border-radius:5px
}
.age-label {
    display:block;
    margin-top:15px;
    color:rgba(255,255,255,.76);
    font-size:12px
}
.section {
    width:min(100%,1200px);
    margin:0 auto;
    padding:100px 34px
}
.section h2,.download-cta h2 {
    margin:0;
    font-size:clamp(32px,4vw,52px);
    line-height:1.08;
    letter-spacing:-2px
}
.heading {
    max-width:720px;
    margin-bottom:34px
}
.heading>p:last-child {
    color:var(--muted);
    font-size:14px;
    line-height:1.85
}
.calendar {
    display:grid;
    grid-template-columns:.72fr 1.28fr;
    border:2px solid var(--ink)
}
.calendar aside {
    padding:27px;
    color:var(--white);
    background:var(--night)
}
.calendar aside span {
    color:var(--mint);
    font-size:11px;
    font-weight:900
}
.calendar aside b {
    display:block;
    margin-top:55px;
    font-size:27px;
    line-height:1.25
}
.calendar aside p {
    color:rgba(255,255,255,.7);
    font-size:13px;
    line-height:1.75
}
.calendar article {
    display:grid;
    grid-template-columns:74px 1fr;
    gap:17px;
    padding:20px;
    border-bottom:1px solid var(--ink)
}
.calendar article:last-child {
    border:0
}
.calendar time {
    color:var(--purple);
    font-weight:900
}
.calendar b,.calendar span {
    display:block
}
.calendar b {
    margin-bottom:6px;
    font-size:16px
}
.calendar span {
    color:var(--muted);
    font-size:13px
}
.cover-rail {
    display:flex;
    gap:10px;
    margin-top:22px;
    overflow-x:auto;
    padding-bottom:4px
}
.cover-rail article {
    display:grid;
    grid-template-columns:66px 1fr;
    column-gap:8px;
    flex:1 0 180px;
    min-height:79px;
    padding:6px;
    background:var(--white);
    border:1px solid var(--line)
}
.cover-rail img {
    grid-row:span 2;
    width:66px;
    height:66px;
    object-fit:contain;
    background:#eeeefa
}
.cover-rail b {
    align-self:end;
    font-size:13px
}
.cover-rail span {
    align-self:start;
    color:var(--muted);
    font-size:11px
}
.discover {
    display:grid;
    grid-template-columns:.7fr 1.3fr;
    gap:68px;
    align-items:start;
    background:#eeecf8
}
.discover-grid {
    display:grid;
    grid-template-columns:1.12fr .88fr;
    grid-template-rows:repeat(3,190px);
    gap:10px
}
.discover-grid article {
    display:flex;
    flex-direction:column;
    min-height:0;
    min-width:0;
    padding:22px;
    background:var(--white);
    border:1px solid var(--line)
}
.discover-grid .feature {
    position:relative;
    grid-row:span 3;
    overflow:hidden;
    padding:0;
    color:var(--white);
    background:var(--night)
}
.feature img {
    width:100%;
    height:100%;
    object-fit:cover
}
.feature:after {
    position:absolute;
    right:0;
    bottom:0;
    left:0;
    height:55%;
    content:"";
    background:linear-gradient(transparent,rgba(25,24,40,.86))
}
.feature div {
    position:absolute;
    z-index:1;
    right:20px;
    bottom:20px;
    left:20px
}
.feature span {
    color:var(--mint);
    font-size:11px;
    font-weight:900
}
.feature b {
    display:block;
    margin-top:7px;
    font-size:21px;
    line-height:1.25
}
.discover-grid i {
    color:var(--purple);
    font-size:13px;
    font-style:normal;
    font-weight:900
}
.discover-grid article:not(.feature) b {
    display:block;
    margin-top:auto;
    font-size:19px
}
.discover-grid p {
    margin:8px 0 0;
    color:var(--muted);
    font-size:13px;
    line-height:1.7
}
.discover-grid .accent {
    color:var(--white);
    background:var(--purple);
    border-color:var(--purple)
}
.accent i,.accent p {
    color:var(--white)
}
.route {
    display:grid;
    grid-template-columns:.8fr .8fr 1.4fr;
    gap:42px;
    align-items:start
}
.route-copy {
    color:var(--muted);
    font-size:14px;
    line-height:1.9
}
.route-copy p {
    margin:0
}
.route-copy a {
    display:inline-flex;
    gap:15px;
    margin-top:17px;
    padding-bottom:6px;
    color:var(--ink);
    font-weight:900;
    border-bottom:2px solid var(--mint)
}
.route ol {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    margin:0;
    padding:0;
    list-style:none;
    border-top:2px solid var(--ink)
}
.route li {
    min-height:180px;
    padding:19px 14px;
    border-right:1px solid var(--line)
}
.route li:last-child {
    border:0
}
.route li span {
    color:var(--purple);
    font-size:12px;
    font-weight:900
}
.route li b {
    display:block;
    margin-top:45px;
    font-size:18px
}
.route li p {
    margin:7px 0;
    color:var(--muted);
    font-size:12px;
    line-height:1.6
}
.faq {
    display:grid;
    grid-template-columns:.5fr 1.5fr;
    gap:70px;
    background:#eeecf8
}
.faq>div>p:last-child {
    color:var(--muted);
    font-size:14px;
    line-height:1.8
}
.faq-list {
    display:grid;
    gap:9px
}
.faq-list details {
    background:var(--white);
    border:1px solid var(--line);
    border-radius:5px
}
.faq-list summary {
    display:flex;
    align-items:center;
    min-height:60px;
    padding:0 18px;
    font-size:14px;
    font-weight:900;
    cursor:pointer;
    list-style:none
}
.faq-list summary::-webkit-details-marker {
    display:none
}
.faq-list i {
    margin-left:auto;
    color:var(--purple);
    font-size:21px;
    font-style:normal
}
.faq-list details[open] i {
    transform:rotate(45deg)
}
.faq-list p {
    margin:-2px 18px 18px;
    color:var(--muted);
    font-size:13px;
    line-height:1.8
}
.faq-list p a {
    color:var(--purple);
    font-weight:800
}
.gallery {
    padding-top:25px
}
.gallery-grid {
    display:grid;
    grid-template-columns:1.15fr .85fr;
    grid-template-rows:145px 145px;
    grid-template-areas:"main top" "main wide";
    gap:10px
}
.gallery-grid figure {
    position:relative;
    min-height:0;
    margin:0;
    overflow:hidden;
    background:#e8e6f2
}
.main-pic {
    grid-area:main
}
.top-pic {
    grid-area:top
}
.wide-pic {
    grid-area:wide
}
.gallery-grid img {
    width:100%;
    height:100%;
    object-fit:cover
}
.gallery-grid figure:after {
    position:absolute;
    right:0;
    bottom:0;
    left:0;
    height:48%;
    content:"";
    background:linear-gradient(transparent,rgba(25,24,40,.8))
}
.gallery-grid figcaption {
    position:absolute;
    z-index:1;
    right:13px;
    bottom:12px;
    left:13px;
    color:var(--white);
    font-size:13px;
    font-weight:800
}
.voices-band {
    color:var(--white);
    background:var(--night)
}
.voices-band .section-kicker {
    color:var(--mint)
}
.review-grid {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:15px
}
.review {
    position:relative;
    min-height:275px;
    padding:21px 21px 45px;
    color:var(--ink);
    background:var(--white);
    border-radius:5px
}
.review header {
    display:flex;
    gap:9px;
    align-items:center
}
.review header span {
    display:grid;
    width:34px;
    height:34px;
    place-items:center;
    color:var(--ink);
    font-size:13px;
    font-weight:900;
    background:var(--mint);
    border-radius:50%
}
.review header b {
    font-size:14px
}
.review em {
    margin-left:auto;
    color:#f0a31f;
    font-size:11px;
    font-style:normal
}
.review>p {
    margin:16px 0 0;
    color:#5d5b6d;
    font-size:13px;
    line-height:1.75
}
.review time {
    position:absolute;
    right:21px;
    bottom:18px;
    color:#a29fad;
    font-size:12px
}
.download-cta {
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:35px;
    width:min(100%,1200px);
    margin:0 auto;
    padding:72px 34px
}
.download-cta .section-kicker {
    color:var(--purple)
}
.download-cta a {
    padding:17px 22px;
    color:var(--ink);
    font-weight:900;
    background:var(--mint);
    border-radius:5px
}
.site-footer {
    min-height:210px;
    display:grid;
    grid-template-columns:var(--nav) 1fr;
    color:var(--white);
    background:#28263d
}
.footer-brand {
    justify-content:center;
    padding:30px;
    background:#363350
}
.footer-center {
    display:grid;
    place-content:center;
    gap:28px;
    text-align:center
}
.footer-center nav {
    display:flex;
    flex-wrap:wrap;
    justify-content:center
}
.footer-center nav a {
    padding:0 14px;
    font-size:13px;
    font-weight:700;
    border-right:1px solid rgba(255,255,255,.35)
}
.footer-center nav a:last-child {
    border:0
}
.footer-center p {
    margin:0;
    color:rgba(255,255,255,.72);
    font-size:12px
}
.back-top {
    position:fixed;
    z-index:10;
    right:22px;
    bottom:22px;
    display:grid;
    width:42px;
    height:42px;
    place-items:center;
    color:var(--ink);
    font-size:21px;
    font-weight:900;
    background:var(--mint);
    border:1px solid var(--white);
    border-radius:50%
}
@media(max-width:900px) {
    :root {
        --nav:clamp(210px,25vw,240px)
    }
    .section,.download-cta {
        padding-right:25px;
        padding-left:25px
    }
    .discover {
        grid-template-columns:1fr
    }
    .route {
        grid-template-columns:1fr 1fr
    }
    .route ol {
        grid-column:span 2
    }
    .review-grid {
        grid-template-columns:1fr 1fr
    }
}
@media(max-width:680px) {
    :root {
        --nav:0px
    }
    .topbar {
        padding:0 13px
    }
    .brand img {
        width:35px;
        height:35px
    }
    .brand b {
        font-size:15px
    }
    .brand small {
        font-size:10px
    }
    .top-download {
        padding:10px 11px;
        font-size:12px
    }
    .menu-toggle {
        display:block
    }
    .channel-nav {
        z-index:25;
        width:min(82vw,300px);
        transform:translateX(-105%);
        transition:transform .22s ease;
        box-shadow:10px 0 28px rgba(25,24,40,.18)
    }
    .channel-nav.is-open {
        transform:translateX(0)
    }
    .channel-nav a {
        min-height:48px;
        font-size:14px
    }
    .site-main {
        margin-left:0
    }
    .hero {
        min-height:650px;
        align-items:flex-end;
        padding:90px 20px 54px;
        background-position:59% center
    }
    .hero:after {
        background:linear-gradient(180deg,rgba(39,37,61,.25),rgba(39,37,61,.94) 75%)
    }
    .hero-copy {
        padding:25px 18px;
        border-left-width:5px
    }
    .hero h1 {
        font-size:63px;
        letter-spacing:-3px
    }
    .hero-slogan {
        margin-top:19px;
        font-size:30px
    }
    .hero-text {
        font-size:14px;
        line-height:1.75
    }
    .section,.download-cta {
        padding:68px 15px
    }
    .section h2,.download-cta h2 {
        font-size:34px;
        letter-spacing:-1px
    }
    .calendar {
        grid-template-columns:1fr
    }
    .calendar aside b {
        margin-top:25px
    }
    .cover-rail {
        margin-right:-15px;
        padding-right:15px;
        padding-left:15px
    }
    .discover-grid,.faq,.route {
        grid-template-columns:1fr;
        grid-template-rows:none;
        gap:20px
    }
    .discover-grid .feature {
        grid-row:auto;
        min-height:265px
    }
    .discover-grid article:not(.feature) {
        min-height:156px
    }
    .route ol {
        grid-column:auto
    }
    .route li {
        min-height:160px;
        padding:15px 9px
    }
    .route li b {
        margin-top:35px;
        font-size:16px
    }
    .gallery-grid {
        grid-template-columns:1fr 1fr;
        grid-template-rows:130px 130px 130px;
        grid-template-areas:"main main" "top top" "wide wide";
        gap:7px
    }
    .review-grid {
        grid-template-columns:1fr;
        gap:10px
    }
    .review {
        min-height:0;
        padding:18px 17px 44px
    }
    .review time {
        right:17px;
        bottom:17px
    }
    .download-cta {
        display:grid;
        gap:28px
    }
    .download-cta a {
        position:relative;
        left:50%;
        width:220px;
        margin:0;
        transform:translateX(-50%);
        text-align:center
    }
    .site-footer {
        grid-template-columns:1fr;
        min-height:0
    }
    .footer-brand {
        justify-content:center;
        padding:28px 15px 20px
    }
    .footer-center {
        gap:20px;
        padding:10px 15px 30px
    }
    .footer-center nav a {
        margin-bottom:8px;
        padding:0 9px
    }
    .back-top {
        right:15px;
        bottom:15px
    }
}