@charset "UTF-8";

:root {
    --nav-width: clamp(220px, 17vw, 278px);
    --ink: #263126;
    --muted: #657064;
    --paper: #f6f7f1;
    --paper-deep: #e8ece2;
    --line: #d4dbce;
    --green: #a7e651;
    --green-deep: #6aa92d;
    --night: #233128;
    --night-soft: #314438;
    --white: #ffffff;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 78px;
}

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;
}

button {
    font: inherit;
}

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;
    background: var(--night);
    border-bottom: 1px solid rgba(255, 255, 255, .15);
}

.brand,
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand {
    color: var(--white);
}

.brand img,
.footer-brand img {
    width: 38px;
    height: 38px;
    object-fit: cover;
    background: #e3f0d6;
    border-radius: 50%;
}

.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: .72;
}

.top-download,
.hero-download,
.download-cta a {
    font-weight: 900;
    border-radius: 5px;
}

.top-download {
    margin-left: auto;
    padding: 11px 16px;
    color: #243026;
    font-size: 13px;
    background: var(--green);
}

.top-download i {
    margin-left: 6px;
    font-style: normal;
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 38px;
    margin-left: 10px;
    padding: 8px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .7);
    border-radius: 5px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 3px 0;
    background: var(--white);
}

.channel-nav {
    position: fixed;
    z-index: 20;
    top: 64px;
    bottom: 0;
    left: 0;
    width: var(--nav-width);
    display: flex;
    flex-direction: column;
    padding: 18px 10px 26px;
    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 li {
    margin: 0;
}

.channel-nav a {
    display: flex;
    align-items: center;
    min-height: 54px;
    padding: 0 14px;
    font-size: 16px;
    font-weight: 900;
    border: 2px solid var(--ink);
}

.channel-nav a:hover,
.channel-nav a.is-active {
    background: var(--green);
}

.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: 1.75;
    border-top: 1px solid var(--line);
}

.site-main {
    margin-left: var(--nav-width);
    padding-top: 64px;
    overflow: hidden;
}

.hero {
    position: relative;
    min-height: min(770px, calc(100vh - 64px));
    display: flex;
    align-items: center;
    padding: 80px clamp(42px, 8vw, 150px);
    color: var(--white);
    background: url("../images/bjt.jpg") center / cover no-repeat;
}

.hero::after {
    position: absolute;
    inset: 0;
    content: "";
    background: linear-gradient(90deg, rgba(27, 37, 30, .92) 0%, rgba(27, 37, 30, .76) 44%, rgba(27, 37, 30, .15) 100%);
}

.hero-shade {
    position: absolute;
    z-index: 1;
    top: 14%;
    bottom: 14%;
    left: clamp(22px, 5vw, 82px);
    width: min(48vw, 600px);
    background: rgba(25, 35, 28, .38);
    border-left: 7px solid var(--green);
}

.hero-copy {
    position: relative;
    z-index: 2;
    width: min(650px, 100%);
}

.eyebrow,
.section-kicker {
    margin: 0 0 12px;
    color: var(--green);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 1.5px;
}

.hero h1 {
    margin: 0;
    font-size: clamp(62px, 8vw, 120px);
    line-height: .88;
    letter-spacing: -5px;
}

.hero-slogan {
    display: inline-block;
    margin: 26px 0 18px;
    padding: 7px 13px 9px;
    color: #213026;
    font-size: clamp(29px, 3.8vw, 54px);
    font-weight: 900;
    line-height: 1.08;
    background: var(--green);
}

.hero-text {
    max-width: 570px;
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.85;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0;
}

.hero-tags span {
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 700;
    border: 1px solid rgba(255, 255, 255, .78);
    border-radius: 5px;
}

.hero-download {
    display: inline-flex;
    align-items: center;
    gap: 18px;
    padding: 15px 20px;
    color: #253127;
    background: var(--white);
}

.hero-download b {
    font-size: 20px;
}

.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: 104px 34px;
}

.section-heading {
    max-width: 740px;
    margin-bottom: 34px;
}

.section h2,
.download-cta h2 {
    margin: 0;
    font-size: clamp(32px, 4vw, 52px);
    line-height: 1.08;
    letter-spacing: -2px;
}

.heading-note {
    margin: 16px 0 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.85;
}

.table-wrap {
    overflow-x: auto;
    background: var(--white);
    border: 2px solid var(--ink);
}

table {
    width: 100%;
    min-width: 680px;
    border-spacing: 0;
    border-collapse: collapse;
}

th,
td {
    padding: 17px 18px;
    text-align: left;
    border-right: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
}

th:last-child,
td:last-child {
    border-right: 0;
}

tbody tr:last-child td {
    border-bottom: 0;
}

th {
    color: var(--white);
    font-size: 14px;
    background: var(--night);
}

td {
    font-size: 14px;
    line-height: 1.65;
}

td:first-child {
    width: 18%;
    font-weight: 900;
}

td:nth-child(2) {
    width: 23%;
    font-weight: 800;
}

.cover-rail {
    display: flex;
    gap: 10px;
    margin-top: 22px;
    overflow-x: auto;
    padding-bottom: 4px;
    scroll-snap-type: x proximity;
}

.cover-rail article {
    position: relative;
    flex: 1 0 154px;
    height: 138px;
    overflow: hidden;
    background: var(--paper-deep);
    border: 1px solid var(--ink);
    scroll-snap-align: start;
}

.cover-rail img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #e9ede4;
}

.cover-rail div {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 10px;
    color: var(--white);
    background: rgba(26, 35, 29, .76);
}

.cover-rail b,
.cover-rail span {
    display: block;
}

.cover-rail b {
    font-size: 13px;
}

.cover-rail span {
    margin-top: 3px;
    font-size: 11px;
    opacity: .84;
}

.tracker {
    padding-top: 30px;
}

.channel-heading {
    max-width: none;
    display: grid;
    grid-template-columns: minmax(300px, .9fr) minmax(280px, .6fr);
    gap: 48px;
    align-items: end;
}

.channel-heading > p {
    margin: 0 0 5px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.85;
}

.channel-map {
    display: grid;
    grid-template-columns: .76fr 1.24fr;
    gap: 12px;
}

.channel-map article {
    min-height: 220px;
    padding: 25px;
    border: 1px solid var(--line);
}

.map-intro {
    background: var(--white);
}

.map-intro span,
.map-wide span {
    color: var(--green-deep);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 1px;
}

.map-intro h3 {
    margin: 54px 0 9px;
    font-size: 23px;
}

.map-intro p,
.map-wide p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.8;
}

.map-focus {
    position: relative;
    overflow: hidden;
    color: var(--white);
    background: var(--night);
}

.map-focus img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-focus::after {
    position: absolute;
    inset: 0;
    content: "";
    background: linear-gradient(90deg, rgba(26, 37, 29, .86), rgba(26, 37, 29, .08));
}

.map-focus div {
    position: relative;
    z-index: 1;
    max-width: 290px;
}

.map-focus span {
    color: var(--green);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 1px;
}

.map-focus h3 {
    margin: 44px 0 9px;
    font-size: 27px;
    line-height: 1.16;
}

.map-focus p {
    margin: 0;
    font-size: 13px;
    line-height: 1.75;
}

.map-dark {
    color: var(--white);
    background: var(--night);
    border-color: var(--night) !important;
}

.map-dark p {
    color: rgba(255, 255, 255, .72);
}

.map-wide {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: var(--green);
    border-color: var(--green) !important;
}

.map-wide p {
    max-width: 430px;
    color: #263529;
    font-size: 16px;
    font-weight: 700;
}

.method {
    display: grid;
    grid-template-columns: minmax(275px, .8fr) minmax(390px, 1.2fr);
    gap: 74px;
    align-items: start;
}

.method-copy > p:not(.section-kicker) {
    max-width: 400px;
    margin: 18px 0 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.9;
}

.text-download {
    display: inline-flex;
    gap: 17px;
    margin-top: 24px;
    padding-bottom: 7px;
    font-size: 14px;
    font-weight: 900;
    border-bottom: 2px solid var(--green-deep);
}

.method-list {
    border-top: 2px solid var(--ink);
}

.method-list article {
    display: grid;
    grid-template-columns: 70px 1fr;
    gap: 15px;
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
}

.method-list i {
    color: var(--green-deep);
    font-size: 14px;
    font-style: normal;
    font-weight: 900;
}

.method-list b {
    font-size: 19px;
}

.method-list p {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.75;
}

.faq {
    display: grid;
    grid-template-columns: minmax(240px, .5fr) minmax(430px, 1.5fr);
    gap: 70px;
    align-items: start;
    background: var(--paper-deep);
}

.faq-title > 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 #cbd4c5;
    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 summary i {
    margin-left: auto;
    color: var(--green-deep);
    font-size: 21px;
    font-style: normal;
    font-weight: 400;
}

.faq-list details[open] summary i {
    transform: rotate(45deg);
}

.faq-list details p {
    margin: -2px 18px 18px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.8;
}

.faq-list details p a {
    color: var(--green-deep);
    font-weight: 800;
}

.gallery-heading {
    max-width: none;
    display: flex;
    justify-content: space-between;
    gap: 40px;
    align-items: end;
}

.gallery-heading > p {
    max-width: 350px;
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.8;
}

.gallery-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr .85fr;
    grid-template-areas: "main tall square" "main wide wide";
    gap: 10px;
}

.gallery-grid figure {
    position: relative;
    min-height: 205px;
    margin: 0;
    overflow: hidden;
    background: #e1e7dc;
}

.gallery-main {
    grid-area: main;
    min-height: 430px !important;
}

.gallery-tall {
    grid-area: tall;
}

.gallery-square {
    grid-area: square;
}

.gallery-wide {
    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(20, 29, 23, .8));
}

.gallery-grid figcaption {
    position: absolute;
    z-index: 1;
    right: 14px;
    bottom: 13px;
    left: 14px;
    color: var(--white);
}

.gallery-grid b,
.gallery-grid span {
    display: block;
}

.gallery-grid b {
    font-size: 14px;
}

.gallery-grid span {
    margin-top: 4px;
    font-size: 11px;
    opacity: .88;
}

.editorial {
    display: grid;
    grid-template-columns: 110px minmax(250px, .8fr) minmax(320px, 1fr);
    gap: 40px;
    align-items: start;
    border-top: 1px solid var(--line);
}

.editorial-mark {
    display: grid;
    width: 92px;
    height: 92px;
    place-items: center;
    color: var(--night);
    font-size: 53px;
    font-weight: 900;
    background: var(--green);
}

.editorial-text {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.9;
}

.editorial-text p {
    margin: 0 0 17px;
}

.voices-band {
    color: var(--white);
    background: var(--night);
}

.voices-band .section-kicker {
    color: var(--green);
}

.voices-band .channel-heading > p {
    color: rgba(255, 255, 255, .72);
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.review-card {
    position: relative;
    min-height: 274px;
    padding: 21px 21px 45px;
    color: var(--ink);
    background: var(--white);
    border-radius: 5px;
}

.review-card header {
    display: flex;
    gap: 9px;
    align-items: center;
}

.avatar {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    color: var(--night);
    font-size: 13px;
    font-weight: 900;
    background: var(--green);
    border-radius: 50%;
}

.review-card header b {
    font-size: 14px;
}

.review-card header em {
    margin-left: auto;
    color: #f2a51d;
    font-size: 11px;
    font-style: normal;
    letter-spacing: 1px;
}

.review-card > p {
    margin: 16px 0 0;
    color: #526052;
    font-size: 13px;
    line-height: 1.75;
}

.review-card time {
    position: absolute;
    right: 21px;
    bottom: 18px;
    color: #9aa69a;
    font-size: 12px;
}

.download-cta {
    display: flex;
    justify-content: space-between;
    gap: 35px;
    align-items: center;
    width: min(100%, 1200px);
    margin: 0 auto;
    padding: 72px 34px;
}

.download-cta .section-kicker {
    color: var(--green-deep);
}

.download-cta a {
    display: inline-flex;
    gap: 22px;
    align-items: center;
    padding: 17px 22px;
    color: var(--night);
    white-space: nowrap;
    background: var(--green);
}

.download-cta b {
    font-size: 21px;
}

.site-footer {
    min-height: 210px;
    display: grid;
    grid-template-columns: var(--nav-width) 1fr;
    color: #f7faef;
    background: #1c251e;
}

.footer-brand {
    justify-content: center;
    padding: 30px;
    background: #273229;
}

.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-right: 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(--night);
    font-size: 21px;
    font-weight: 900;
    background: var(--green);
    border: 1px solid var(--night);
    border-radius: 50%;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 3px solid var(--green);
    outline-offset: 3px;
}

@media (max-width: 900px) {
    :root {
        --nav-width: clamp(210px, 25vw, 240px);
    }

    .section,
    .download-cta {
        padding-right: 25px;
        padding-left: 25px;
    }

    .channel-map {
        grid-template-columns: 1fr 1fr;
    }

    .map-focus,
    .map-wide {
        grid-column: span 2;
    }

    .review-grid {
        grid-template-columns: 1fr 1fr;
    }

    .editorial {
        grid-template-columns: 80px .9fr 1fr;
        gap: 25px;
    }

    .editorial-mark {
        width: 70px;
        height: 70px;
        font-size: 40px;
    }
}

@media (max-width: 680px) {
    :root {
        --nav-width: 0px;
    }

    html {
        scroll-padding-top: 64px;
    }

    .topbar {
        height: 64px;
        padding: 0 13px;
    }

    .brand {
        gap: 7px;
    }

    .brand img {
        width: 35px;
        height: 35px;
    }

    .brand b {
        font-size: 15px;
    }

    .brand small {
        font-size: 10px;
    }

    .top-download {
        padding: 10px 11px;
        font-size: 12px;
        white-space: nowrap;
    }

    .top-download i {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .channel-nav {
        z-index: 25;
        top: 64px;
        width: min(82vw, 300px);
        padding: 15px 11px 22px;
        transform: translateX(-105%);
        box-shadow: 10px 0 28px rgba(24, 35, 27, .15);
        transition: transform .22s ease;
    }

    .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(27, 37, 30, .28), rgba(27, 37, 30, .94) 73%);
    }

    .hero-shade {
        top: auto;
        right: 13px;
        bottom: 34px;
        left: 13px;
        width: auto;
        height: 72%;
        border-left-width: 5px;
    }

    .hero h1 {
        font-size: 65px;
        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;
    }

    .table-wrap {
        margin-right: -15px;
        margin-left: -15px;
    }

    th,
    td {
        padding: 15px 14px;
        font-size: 13px;
    }

    .cover-rail {
        margin-right: -15px;
        padding-right: 15px;
        padding-left: 15px;
    }

    .cover-rail article {
        flex-basis: 148px;
        height: 145px;
    }

    .channel-heading,
    .faq,
    .method {
        grid-template-columns: 1fr;
        gap: 22px;
    }

    .channel-heading > p {
        margin: 0;
    }

    .channel-map {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .channel-map article,
    .map-focus,
    .map-wide {
        grid-column: auto;
        min-height: 200px;
        padding: 20px;
    }

    .map-focus h3,
    .map-intro h3 {
        margin-top: 36px;
    }

    .method-list article {
        grid-template-columns: 48px 1fr;
    }

    .gallery-heading {
        display: grid;
        gap: 16px;
    }

    .gallery-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-areas: "main main" "tall square" "wide wide";
        gap: 7px;
    }

    .gallery-grid figure {
        min-height: 160px;
    }

    .gallery-main {
        min-height: 265px !important;
    }

    .gallery-wide {
        min-height: 185px !important;
    }

    .gallery-grid figcaption {
        right: 10px;
        bottom: 10px;
        left: 10px;
    }

    .editorial {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .editorial-mark {
        width: 60px;
        height: 60px;
    }

    .review-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .review-card {
        min-height: 0;
        padding: 18px 17px 44px;
    }

    .review-card time {
        right: 17px;
        bottom: 17px;
    }

    .download-cta {
        display: grid;
        gap: 28px;
    }

    .download-cta a {
        justify-content: 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;
    }
}