:root {
    color-scheme: light;
    --paper: #f7f5ed;
    --paper-deep: #efeee3;
    --cream: #f6ead0;
    --green: #2b563e;
    --green-dark: #234731;
    --ink: #29392e;
    --muted: #697260;
    --line: #dcded1;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 105px;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font);
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: #dce5ce;
    color: var(--green-dark);
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    color: inherit;
    cursor: pointer;
}

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

svg {
    flex-shrink: 0;
}

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

a:focus-visible, button:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
    outline: 3px solid #8da174;
    outline-offset: 5px;
}

h1, h2, h3, p, figure {
    margin: 0;
}

.container {
    width: min(1160px, calc(100% - 96px));
    margin-inline: auto;
}

.icon-library {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

.icon {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.skip-link {
    position: fixed;
    z-index: 20;
    top: 12px;
    left: 12px;
    padding: 14px 20px;
    background: var(--green);
    color: white;
    border-radius: 8px;
    transform: translateY(-150%);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid #29392e0d;
    background: #f7f5edf2;
    backdrop-filter: blur(16px);
}

.header-inner {
    height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    gap: 12px;
    align-items: center;
    flex-shrink: 0;
}

.brand > img {
    border-radius: 12px;
}

.brand > span {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -1px;
}

.brand-chinese {
    margin-left: 12px;
    padding-left: 12px;
    border-left: 1px solid #c8cec1;
    color: var(--muted);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 2px;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    font-size: 14px;
}

.site-nav > a {
    transition: color 160ms ease;
}

.site-nav > a:hover {
    color: #628257;
}

.site-nav .nav-download {
    margin-left: 8px;
    padding: 11px 17px;
    border: 1px solid #a6b29c;
    border-radius: 7px;
    color: var(--green);
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.nav-download .icon {
    width: 17px;
    height: 17px;
}

.menu-toggle {
    display: none;
}

.hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 32px;
    min-height: 620px;
    padding-block: 76px 64px;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--green);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1.8px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #7e8b64;
    box-shadow: 0 0 0 4px #7e8b6414;
}

.hero h1 {
    margin-top: 28px;
    font-size: clamp(44px, 5.3vw, 70px);
    line-height: 1.29;
    font-weight: 650;
    letter-spacing: -3px;
}

.hero h1 > span {
    color: var(--green);
}

.hero-description {
    margin-top: 26px;
    color: #6c7466;
    font-size: 16px;
    line-height: 1.95;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 26px;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 17px 23px;
    border-radius: 8px;
    min-height: 54px;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.3;
    transition: background 160ms ease, transform 160ms ease;
}

.button-primary {
    background: var(--green);
    color: #fffdf5;
    box-shadow: 0 4px 9px #2347310e;
}

.button-primary:hover {
    background: #37664a;
    transform: translateY(-2px);
}

.button-primary:active {
    transform: translateY(0);
}

.button > .icon:last-child {
    width: 16px;
    height: 16px;
    margin-left: 6px;
    opacity: .75;
}

.apple-icon {
    width: 17px;
    height: 19px;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--green);
    font-size: 13px;
    white-space: nowrap;
}

.text-link .icon {
    width: 18px;
    height: 18px;
    transition: transform 160ms ease;
}

.text-link:hover .icon {
    transform: translateX(3px);
}

.download-note {
    margin-top: 17px;
    color: var(--muted);
    font-size: 11px;
    line-height: 1.8;
}

.download-note > span {
    padding-inline: 6px;
}

.hero-art {
    position: relative;
    width: 100%;
    height: 450px;
    isolation: isolate;
}

.art-disc {
    position: absolute;
    z-index: -2;
    width: 364px;
    height: 364px;
    left: 50%;
    top: 48%;
    transform: translate(-50%, -50%);
    background: #e7eadb;
    border-radius: 50%;
}

.art-orbit {
    position: absolute;
    z-index: -1;
    left: 50%;
    top: 48%;
    max-width: calc(100% - 32px);
    border: 1px solid #cbd1b980;
    border-radius: 50%;
}

.orbit-one {
    width: 436px;
    height: 436px;
    transform: translate(-50%, -50%);
}

.orbit-two {
    width: 464px;
    height: 332px;
    transform: translate(-50%, -50%) rotate(-15deg);
}

.mascot-card {
    position: absolute;
    width: 294px;
    left: 50%;
    top: 49%;
    transform: translate(-50%, -50%) rotate(-7deg);
    border-radius: 36px;
    background: #fdfaf1;
    padding: 13px 13px 0;
    box-shadow: 0 24px 40px -20px #35492742, 0 3px 5px #3549270a;
}

.mascot-card img {
    border-radius: 27px;
    width: 268px;
    height: 268px;
}

.mascot-caption {
    display: block;
    padding: 17px 0 18px;
    text-align: center;
    font-family: Georgia, serif;
    font-size: 14px;
    font-style: italic;
    color: #75805f;
}

.floating-note {
    position: absolute;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fffdf7;
    border: 1px solid #e5e5d7;
    box-shadow: 0 8px 25px #3a512615;
    border-radius: 11px;
    padding: 17px 20px;
    font-size: 13px;
    color: #4e6147;
    white-space: nowrap;
}

.note-understand {
    right: -6px;
    top: 37px;
    transform: rotate(5deg);
}

.note-dot {
    width: 8px;
    height: 8px;
    border: 1.5px solid #8b9974;
    border-radius: 50%;
}

.note-express {
    bottom: 55px;
    left: -10px;
    transform: rotate(-4deg);
}

.note-express .icon {
    width: 19px;
    height: 19px;
    color: var(--green);
}

.art-star {
    position: absolute;
    font-size: 40px;
    color: #8a9872;
    line-height: 1;
}

.star-one {
    top: 35px;
    left: 36px;
    transform: rotate(-12deg);
}

.star-two {
    bottom: 65px;
    right: 19px;
    font-size: 27px;
}

.art-label {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    color: #8b927e;
    font-size: 11px;
    letter-spacing: 5px;
    white-space: nowrap;
}

.intro-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    border-block: 1px solid var(--line);
    padding-block: 26px;
}

.intro-strip > span {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    color: #60704f;
    font-size: 13px;
}

.intro-strip > span + span {
    border-left: 1px solid var(--line);
}

.intro-strip .icon {
    color: #839477;
    width: 20px;
    height: 20px;
}

.section {
    padding-block: 100px;
}

.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 44px;
}

.section-label {
    font-size: 11px;
    color: #60704f;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

h2 {
    font-size: 39px;
    line-height: 1.45;
    font-weight: 600;
    letter-spacing: -1.4px;
}

.section-description {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.95;
    max-width: 440px;
    padding-bottom: 7px;
}

.product-figure {
    background: #fff;
    border: 1px solid #d6ddd0;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 15px 40px -15px #3a51261c;
}

.window-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 43px;
    background: #f0f2eb;
    border-bottom: 1px solid #dfe5dc;
    padding: 0 20px;
    color: #7f897a;
    font-size: 11px;
}

.window-dots {
    display: flex;
    gap: 6px;
    width: 110px;
}

.window-dots i {
    display: block;
    height: 8px;
    width: 8px;
    border-radius: 50%;
    background: #d7a79a;
}

.window-dots i:nth-child(2) {
    background: #dccc99;
}

.window-dots i:nth-child(3) {
    background: #adbd95;
}

.window-meta {
    font-size: 10px;
    width: 110px;
    text-align: right;
}

.product-image-link {
    display: block;
    position: relative;
}

.product-image-link > img {
    width: 100%;
}

.zoom-label {
    position: absolute;
    bottom: 16px;
    right: 16px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 7px 10px;
    border-radius: 5px;
    background: #fffef5f0;
    border: 1px solid #d6ddd0;
    color: var(--green);
    font-size: 10px;
    opacity: 0;
    transition: opacity 160ms ease;
}

.zoom-label .icon {
    width: 14px;
    height: 14px;
}

.product-image-link:hover .zoom-label, .product-image-link:focus-visible .zoom-label {
    opacity: 1;
}

figcaption {
    padding: 14px 20px;
    font-size: 10px;
    line-height: 1.7;
    color: #60704f;
    border-top: 1px solid #e9eee7;
    text-align: center;
    background: #fafbf7;
}

.product-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 33px;
}

.product-points article {
    display: flex;
    gap: 15px;
}

.point-index {
    color: #60704f;
    font-family: Georgia, serif;
    font-style: italic;
    font-size: 15px;
    padding-top: 2px;
}

h3 {
    font-size: 15px;
    font-weight: 550;
    line-height: 1.5;
}

.product-points p {
    font-size: 11px;
    line-height: 1.8;
    color: var(--muted);
    margin-top: 9px;
}

.expression-section {
    background: var(--paper-deep);
    border-top: 1px solid #e3e3d6;
}

.expression-layout {
    display: grid;
    grid-template-columns: 1fr 1.18fr;
    align-items: center;
    gap: 100px;
}

.serif-text {
    font-family: 'Songti SC', 'STSong', 'Noto Serif CJK SC', serif;
    font-weight: 500;
    color: var(--green);
}

.body-copy {
    margin-top: 25px;
    font-size: 14px;
    color: var(--muted);
    line-height: 2;
}

.scenario-tabs {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.scenario-tab {
    padding: 11px 15px;
    border: 1px solid transparent;
    background: transparent;
    border-radius: 6px;
    color: #60704f;
    font-size: 12px;
    transition: background 160ms ease, color 160ms ease;
}

.scenario-tab:hover {
    color: var(--green);
    background: #dce1d5;
}

.scenario-tab[aria-selected='true'] {
    color: var(--green);
    border-color: #bcc8ae;
    background: #e2e7d9;
}

.expression-demo {
    padding: 29px;
    background: #fcfcf7;
    border: 1px solid #d9dfd0;
    border-radius: 16px;
    box-shadow: 0 20px 36px -28px #3a51263b;
}

.demo-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 10px;
    color: #60704f;
    padding-bottom: 20px;
    border-bottom: 1px solid #e2e6db;
}

.demo-dot {
    width: 5px;
    height: 5px;
    background: #8b9e77;
    border-radius: 50%;
}

.demo-number {
    margin-left: auto;
    font: italic 18px Georgia, serif;
    color: #a4af97;
}

.demo-message, .demo-thought {
    margin-top: 21px;
    font-size: 13px;
    line-height: 1.8;
}

.message-label {
    display: flex;
    gap: 7px;
    align-items: center;
    font-size: 10px;
    color: #60704f;
    margin-bottom: 7px;
}

.message-label .icon {
    width: 14px;
    height: 14px;
}

.demo-thought {
    padding: 16px 18px;
    border-radius: 8px;
    background: #edf0e6;
}

.demo-response {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px dashed #d5ddca;
}

.response-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--green);
    font-size: 11px;
}

.response-label img {
    border-radius: 6px;
}

.tone-label {
    margin-left: auto;
    color: #60704f;
    font-size: 10px;
}

#demo-response {
    font-family: Georgia, 'Songti SC', serif;
    font-size: 21px;
    line-height: 1.6;
    margin-top: 15px;
    color: var(--green);
    min-height: 68px;
}

.response-reason {
    margin-top: 14px;
    font-size: 10px;
    line-height: 1.8;
    color: #60704f;
}

.demo-disclaimer {
    margin-top: 22px;
    text-align: right;
    font-size: 9px;
    color: #60704f;
}

.principles-section {
    background: var(--green-dark);
    color: #f2efdb;
    padding-block: 85px;
}

.principles-layout {
    display: grid;
    grid-template-columns: 1fr 1.12fr;
    gap: 100px;
}

.principles-section .section-label {
    color: #afbd98;
}

.principles-copy h2 {
    font-size: 35px;
    line-height: 1.5;
}

.principles-copy > p:not(.eyebrow) {
    margin-top: 23px;
    color: #b5c0a5;
    font-size: 14px;
    line-height: 1.9;
}

.principles-mark {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 39px;
    color: #95a681;
}

.principles-mark .icon {
    width: 42px;
    height: 42px;
    stroke-width: .9;
}

.principles-mark span {
    font-size: 9px;
    line-height: 1.8;
    letter-spacing: 2px;
}

.principles-list article {
    display: flex;
    align-items: flex-start;
    gap: 23px;
    padding-block: 24px;
    border-bottom: 1px solid #a7b99533;
}

.principles-list article:first-child {
    padding-top: 0;
}

.principles-list article:last-child {
    border: 0;
    padding-bottom: 0;
}

.principle-icon {
    width: 23px;
    height: 23px;
    color: #b5c697;
    margin-top: 1px;
}

.principles-list h3 {
    font-size: 16px;
    font-weight: 450;
}

.principles-list p {
    margin-top: 11px;
    color: #b8c3ac;
    font-size: 12px;
    line-height: 1.95;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 38px;
    margin-top: 50px;
}

.steps article {
    border-top: 1px solid #cbd3be;
    padding-top: 23px;
}

.step-number {
    font-family: Georgia, serif;
    font-style: italic;
    font-size: 34px;
    color: var(--green);
}

.step-number > span {
    font-family: var(--font);
    font-style: normal;
    font-size: 11px;
    color: #60704f;
    margin-left: 10px;
    letter-spacing: 1px;
}

.steps h3 {
    margin-top: 22px;
    font-size: 17px;
}

.steps p {
    margin-top: 12px;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.95;
}

.faq-section {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 80px;
    border-top: 1px solid var(--line);
    padding-block: 75px 95px;
}

.faq-heading h2 {
    font-size: 30px;
}

.faq-list details {
    border-bottom: 1px solid var(--line);
}

.faq-list details:first-child {
    border-top: 1px solid var(--line);
}

.faq-list summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 68px;
    padding-block: 19px;
    font-size: 13px;
    font-weight: 450;
    list-style: none;
    cursor: pointer;
}

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

.faq-list summary .icon {
    width: 17px;
    height: 17px;
    color: #60704f;
    transition: transform 160ms ease;
}

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

.faq-list details > p {
    padding: 0 38px 24px 0;
    font-size: 12px;
    color: var(--muted);
    line-height: 1.95;
}

.download-section {
    position: relative;
    text-align: center;
    padding: 57px 30px 62px;
    background: #e9edde;
    border: 1px solid #dde2d1;
    border-radius: 18px;
}

.download-art {
    position: relative;
    display: inline-block;
    margin-bottom: 25px;
}

.download-art img {
    width: 78px;
    height: 78px;
    border-radius: 22px;
    box-shadow: 0 10px 15px -8px #25462e3d;
    transform: rotate(-7deg);
}

.download-art > span {
    position: absolute;
    color: #93a078;
    font-size: 24px;
    right: -42px;
    top: -5px;
    transform: rotate(12deg);
}

.download-section > .eyebrow {
    justify-content: center;
    font-size: 10px;
    color: #60704f;
    letter-spacing: 3px;
}

.download-section h2 {
    font-size: 39px;
    line-height: 1.5;
    margin-top: 17px;
}

.download-section > p:not(.eyebrow, .download-note) {
    margin-top: 20px;
    font-size: 13px;
    line-height: 1.8;
    color: #60704f;
}

.download-section .button {
    margin-top: 27px;
}

.download-section .download-note {
    font-size: 10px;
    color: #60704f;
}

.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 127px;
    color: #60704f;
}

.footer-brand > img {
    border-radius: 9px;
}

.footer-brand > span {
    font-size: 20px;
    color: var(--green);
}

.footer-brand .brand-chinese {
    font-size: 11px;
}

.footer-tagline {
    font-size: 11px;
    letter-spacing: 2px;
}

.site-footer > a:last-child {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
}

.site-footer > a:last-child .icon {
    width: 14px;
    height: 14px;
}

@media (min-width: 1440px) {
    .hero {
        min-height: 660px;
    }
}

@media (max-width: 1100px) {
    .container {
        width: calc(100% - 64px);
    }
    .hero {
        gap: 12px;
        min-height: 590px;
    }
    .hero h1 {
        font-size: 55px;
    }
    .hero-actions {
        gap: 18px;
    }
    .hero-art {
        height: 405px;
    }
    .art-disc {
        width: 310px;
        height: 310px;
    }
    .orbit-one {
        width: 368px;
        height: 368px;
    }
    .orbit-two {
        width: 386px;
        height: 292px;
    }
    .mascot-card {
        width: 255px;
        border-radius: 30px;
        padding: 11px 11px 0;
    }
    .mascot-card img {
        width: 233px;
        height: 233px;
        border-radius: 24px;
    }
    .mascot-caption {
        font-size: 12px;
    }
    .floating-note {
        padding: 14px 16px;
        font-size: 11px;
    }
    .note-understand {
        top: 36px;
        right: 0;
    }
    .note-express {
        bottom: 48px;
        left: 0;
    }
    .star-one {
        left: 9px;
    }
    .star-two {
        right: 0;
    }
    .expression-layout, .principles-layout {
        gap: 60px;
    }
    .principles-copy h2 {
        font-size: 30px;
    }
    h2 {
        font-size: 35px;
    }
    .faq-section {
        gap: 50px;
    }
}

@media (max-width: 850px) {
    .container {
        width: calc(100% - 48px);
    }
    .site-nav {
        gap: 20px;
        font-size: 12px;
    }
    .brand-chinese {
        margin-left: 8px;
        padding-left: 8px;
    }
    .hero {
        grid-template-columns: 1.2fr 1fr;
        min-height: 515px;
        padding-block: 55px;
    }
    .hero h1 {
        font-size: 46px;
        letter-spacing: -2px;
    }
    .hero-description {
        font-size: 13px;
    }
    .hero-actions {
        flex-wrap: wrap;
        gap: 18px;
        margin-top: 25px;
    }
    .hero-art {
        height: 350px;
    }
    .art-disc {
        width: 254px;
        height: 254px;
    }
    .orbit-one {
        width: 308px;
        height: 308px;
    }
    .orbit-two {
        width: 323px;
        height: 238px;
    }
    .mascot-card {
        width: 217px;
        border-radius: 25px;
        padding: 10px 10px 0;
    }
    .mascot-card img {
        width: 197px;
        height: 197px;
        border-radius: 19px;
    }
    .mascot-caption {
        padding-block: 14px;
        font-size: 10px;
    }
    .floating-note {
        padding: 12px;
        font-size: 10px;
        gap: 7px;
    }
    .note-understand {
        top: 17px;
        right: -5px;
    }
    .note-express {
        bottom: 44px;
        left: -8px;
    }
    .star-one {
        font-size: 28px;
        top: 15px;
        left: 5px;
    }
    .star-two {
        font-size: 20px;
        right: -5px;
    }
    .art-label {
        letter-spacing: 3px;
        font-size: 9px;
    }
    .intro-strip {
        gap: 12px;
        padding-block: 22px;
    }
    .intro-strip > span {
        font-size: 10px;
        gap: 6px;
    }
    .intro-strip .icon {
        width: 17px;
        height: 17px;
    }
    .section {
        padding-block: 70px;
    }
    .section-heading {
        gap: 30px;
    }
    h2 {
        font-size: 31px;
    }
    .section-description {
        font-size: 12px;
        max-width: 340px;
    }
    .product-points {
        gap: 18px;
    }
    .product-points article {
        gap: 9px;
    }
    .product-points h3 {
        font-size: 12px;
    }
    .product-points p {
        font-size: 10px;
    }
    .expression-layout {
        gap: 30px;
    }
    .expression-copy h2 {
        font-size: 29px;
    }
    .body-copy {
        font-size: 12px;
    }
    .scenario-tab {
        padding: 9px 10px;
        font-size: 11px;
    }
    .expression-demo {
        padding: 22px;
    }
    .demo-header {
        font-size: 9px;
    }
    #demo-response {
        font-size: 19px;
    }
    .principles-layout {
        gap: 40px;
    }
    .principles-copy h2 {
        font-size: 27px;
    }
    .principles-list article {
        gap: 17px;
    }
    .principles-list h3 {
        font-size: 14px;
    }
    .principles-list p {
        font-size: 11px;
    }
    .steps {
        gap: 25px;
    }
    .steps h3 {
        font-size: 14px;
    }
    .steps p {
        font-size: 11px;
    }
    .faq-section {
        gap: 40px;
        grid-template-columns: 1fr 1.6fr;
    }
    .faq-heading h2 {
        font-size: 25px;
    }
    .faq-list summary {
        font-size: 12px;
    }
}

@media (max-width: 650px) {
    html {
        scroll-padding-top: 86px;
    }
    .container {
        width: calc(100% - 40px);
    }
    .header-inner {
        min-height: 72px;
        height: auto;
        flex-wrap: wrap;
        padding-block: 16px;
        gap: 14px;
    }
    .brand > img {
        width: 36px;
        height: 36px;
        border-radius: 10px;
    }
    .brand > span {
        font-size: 24px;
    }
    .brand-chinese {
        font-size: 12px;
    }
    .site-nav {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
        font-size: 12px;
        gap: 12px;
        padding-block: 12px 3px;
    }
    .site-nav .nav-download {
        margin: 0;
        padding: 8px 12px;
    }
    .has-js .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        gap: 6px;
        width: 40px;
        height: 40px;
        border: 1px solid var(--line);
        border-radius: 8px;
        background: transparent;
    }
    .menu-toggle > span {
        display: block;
        width: 16px;
        height: 1px;
        background: var(--green);
        transition: transform 160ms ease;
    }
    .menu-toggle[aria-expanded='true'] > span:first-child {
        transform: translateY(3.5px) rotate(45deg);
    }
    .menu-toggle[aria-expanded='true'] > span:last-child {
        transform: translateY(-3.5px) rotate(-45deg);
    }
    .has-js .site-nav {
        display: none;
    }
    .has-js .site-nav.is-open {
        display: flex;
    }
    .hero {
        grid-template-columns: 1fr;
        gap: 25px;
        padding-block: 51px 32px;
    }
    .hero-copy {
        text-align: center;
    }
    .hero-copy .eyebrow {
        justify-content: center;
        font-size: 11px;
    }
    .hero h1 {
        margin-top: 25px;
        font-size: clamp(40px, 9.8vw, 56px);
        letter-spacing: -2px;
    }
    .hero-description {
        margin-top: 22px;
        font-size: 13px;
        line-height: 1.9;
    }
    .hero-actions {
        justify-content: center;
        gap: 18px;
        margin-top: 27px;
    }
    .button {
        padding: 15px 18px;
        min-height: 50px;
        font-size: 12px;
    }
    .hero-actions .text-link {
        font-size: 11px;
    }
    .download-note {
        font-size: 9px;
        margin-top: 15px;
    }
    .hero-art {
        height: 345px;
        max-width: 345px;
        margin-inline: auto;
    }
    .art-disc {
        width: 272px;
        height: 272px;
    }
    .orbit-one {
        width: 316px;
        height: 316px;
    }
    .orbit-two {
        width: 340px;
        height: 238px;
    }
    .mascot-card {
        width: 230px;
    }
    .mascot-card img {
        width: 210px;
        height: 210px;
    }
    .note-understand {
        right: 0;
        top: 20px;
    }
    .note-express {
        left: 0;
        bottom: 40px;
    }
    .star-one {
        left: 8px;
        top: 32px;
    }
    .star-two {
        right: 9px;
        bottom: 50px;
    }
    .intro-strip {
        gap: 8px;
        padding-block: 20px;
    }
    .intro-strip > span {
        flex-direction: column;
        text-align: center;
        gap: 9px;
        font-size: 9px;
        line-height: 1.7;
    }
    .intro-strip .icon {
        width: 18px;
        height: 18px;
    }
    .section {
        padding-block: 58px;
    }
    .section-heading {
        display: block;
        margin-bottom: 28px;
    }
    .section-label {
        font-size: 10px;
        margin-bottom: 16px;
    }
    h2 {
        font-size: 30px;
        line-height: 1.45;
    }
    .section-description {
        margin-top: 22px;
        font-size: 12px;
        max-width: none;
    }
    .desktop-break {
        display: none;
    }
    .product-figure {
        border-radius: 9px;
    }
    .window-bar {
        min-height: 31px;
        padding-inline: 11px;
        font-size: 8px;
    }
    .window-dots {
        width: 45px;
        gap: 4px;
    }
    .window-dots i {
        width: 5px;
        height: 5px;
    }
    .window-meta {
        width: 45px;
        font-size: 7px;
    }
    .zoom-label {
        opacity: 1;
        font-size: 8px;
        padding: 4px 7px;
        bottom: 8px;
        right: 8px;
    }
    .zoom-label .icon {
        width: 11px;
        height: 11px;
    }
    figcaption {
        font-size: 8px;
        padding: 9px 12px;
    }
    .product-points {
        grid-template-columns: 1fr;
        gap: 19px;
        margin-top: 26px;
    }
    .product-points article {
        gap: 14px;
    }
    .point-index {
        font-size: 15px;
    }
    .product-points h3 {
        font-size: 13px;
    }
    .product-points p {
        font-size: 11px;
        margin-top: 5px;
    }
    .expression-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .expression-copy h2 {
        font-size: 31px;
    }
    .body-copy {
        font-size: 13px;
        margin-top: 20px;
    }
    .scenario-tabs {
        margin-top: 23px;
    }
    .scenario-tab {
        font-size: 12px;
        padding: 10px 15px;
    }
    .expression-demo {
        padding: 22px;
    }
    .demo-message, .demo-thought {
        font-size: 12px;
    }
    #demo-response {
        font-size: 21px;
    }
    .principles-section {
        padding-block: 57px;
    }
    .principles-layout {
        grid-template-columns: 1fr;
        gap: 35px;
    }
    .principles-copy h2 {
        font-size: 30px;
    }
    .principles-copy > p:not(.eyebrow) {
        font-size: 12px;
        margin-top: 20px;
    }
    .principles-mark {
        display: none;
    }
    .principles-list article {
        padding-block: 24px;
        gap: 18px;
    }
    .principles-list h3 {
        font-size: 15px;
    }
    .principles-list p {
        font-size: 12px;
    }
    .steps {
        grid-template-columns: 1fr;
        gap: 28px;
        margin-top: 30px;
    }
    .steps article {
        padding-top: 19px;
    }
    .step-number {
        font-size: 29px;
    }
    .steps h3 {
        margin-top: 14px;
        font-size: 16px;
    }
    .steps p {
        font-size: 12px;
        margin-top: 9px;
    }
    .faq-section {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    .faq-heading h2 {
        font-size: 28px;
    }
    .faq-list summary {
        font-size: 12px;
        min-height: 65px;
    }
    .faq-list details > p {
        padding-right: 15px;
    }
    .download-section {
        padding: 40px 20px;
        border-radius: 13px;
    }
    .download-section h2 {
        font-size: 29px;
    }
    .download-section > p:not(.eyebrow, .download-note) {
        font-size: 11px;
    }
    .download-section .download-note {
        font-size: 8px;
    }
    .site-footer {
        min-height: 135px;
        gap: 15px;
        flex-wrap: wrap;
        padding-block: 30px;
    }
    .footer-brand > img {
        width: 30px;
        height: 30px;
    }
    .footer-brand > span {
        font-size: 20px;
    }
    .footer-tagline {
        order: 3;
        width: 100%;
        font-size: 10px;
        letter-spacing: 1px;
    }
}

@media (max-width: 360px) {
    .container {
        width: calc(100% - 32px);
    }
    .hero-actions {
        flex-direction: column;
        gap: 16px;
    }
    .hero-art {
        height: 315px;
    }
    .orbit-one {
        width: 282px;
        height: 282px;
    }
    .orbit-two {
        width: 287px;
        height: 226px;
    }
    .art-disc {
        width: 248px;
        height: 248px;
    }
    .mascot-card {
        width: 212px;
    }
    .mascot-card img {
        width: 192px;
        height: 192px;
    }
    .floating-note {
        font-size: 9px;
        padding: 11px;
    }
    .note-understand {
        right: 0;
        top: 10px;
    }
    .note-express {
        bottom: 35px;
    }
    .star-one {
        font-size: 22px;
        left: 0;
        top: 25px;
    }
    .star-two {
        font-size: 16px;
        right: 3px;
    }
    .scenario-tab {
        padding: 9px 11px;
        font-size: 11px;
    }
    .expression-demo {
        padding: 18px;
    }
    .demo-header {
        font-size: 8px;
    }
    #demo-response {
        font-size: 19px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *, *::before, *::after {
        transition: none !important;
    }
}

@media (hover: none) {
    .zoom-label {
        opacity: 1;
    }
    .button-primary:hover {
        transform: none;
    }
}