:root {
  --ink: #242a20;
  --muted: #6c7267;
  --paper: #f8f8f2;
  --green: #456239;
  --accent: #d8ec83;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
.page { margin: 0; background: var(--paper); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
.sectionShell { width: min(74rem, calc(100% - 5rem)); margin-inline: auto; }
.header { position: sticky; top: 0; z-index: 10; background: rgb(248 248 242 / 95%); border-bottom: 1px solid #e8e9de; backdrop-filter: blur(1rem); }
.navShell { display: flex; align-items: center; justify-content: space-between; width: min(82rem, calc(100% - 5rem)); min-height: 5.5rem; margin-inline: auto; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--ink); font-size: 1.15rem; font-weight: var(--font-weight-semibold); text-decoration: none; white-space: nowrap; }
.brandIcon { object-fit: contain; border-radius: .8rem; }
.nav, .navActions { display: flex; align-items: center; gap: 2.2rem; }
.navActions { gap: 1.2rem; }
.navLink, .navWeb, .languageButton { color: var(--ink); font: inherit; font-size: .88rem; text-decoration: none; }
.navLink:hover, .textLink:hover { color: var(--green); text-decoration: underline; text-underline-offset: .3rem; }
.languageButton { border: 0; padding: .6rem; cursor: pointer; background: transparent; }
.navWeb { border: 1px solid #bcc3b3; padding: .7rem 1.1rem; border-radius: 2rem; }
.hero { display: grid; grid-template-columns: 1.08fr 1fr; align-items: center; min-height: 43rem; gap: 3rem; padding-block: 3rem; }
.eyebrow { display: flex; align-items: center; gap: .65rem; margin: 0 0 1.8rem; font-size: .83rem; letter-spacing: .08rem; color: var(--green); }
.statusDot { width: .45rem; height: .45rem; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 .3rem #e8edda; }
.heroTitle { margin: 0; font-size: clamp(2.7rem, 4.8vw, 4.3rem); line-height: 1.28; letter-spacing: -.13rem; font-weight: var(--font-weight-semibold); }
.heroAccent { display: block; color: var(--green); }
.heroBody { max-width: 29rem; margin-block: 1.65rem 2.2rem; font-size: 1.02rem; color: var(--muted); line-height: 1.95; }
.heroActions { display: flex; align-items: center; gap: 1.8rem; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 1.5rem; min-height: 3.4rem; padding: .9rem 1.5rem; font-size: .92rem; font-weight: var(--font-weight-medium); text-decoration: none; border-radius: .8rem; transition: background .18s, transform .18s; }
.button:hover { transform: translateY(-.15rem); }
.buttonDark { color: white; background: var(--ink); }
.buttonDark:hover { background: var(--green); }
.textLink { display: inline-flex; gap: .7rem; color: var(--ink); font-size: .9rem; text-decoration: none; }
.heroNote { margin-top: 1.25rem; font-size: .74rem; color: #878c80; letter-spacing: .03rem; }
.heroArt { position: relative; display: flex; justify-content: center; align-items: center; height: 36rem; border-radius: 48% 48% 45% 45%; background: #e9edda; }
.orbit { position: absolute; border: 1px solid #d4dcca; border-radius: 50%; width: 115%; height: 66%; transform: rotate(-25deg); }
.orbitTwo { width: 96%; height: 105%; transform: rotate(32deg); }
.star { position: absolute; color: var(--green); font-size: 3rem; }
.starOne { top: 5rem; right: 1.5rem; }
.starTwo { bottom: 3.5rem; left: 2rem; font-size: 3.5rem; }
.floatingLeaf { position: absolute; top: 2rem; left: 1.5rem; color: #849c62; font-size: 5rem; transform: rotate(-20deg); }
.phone { position: relative; width: 17rem; height: 32.5rem; border: .45rem solid #343b30; border-radius: 2.4rem; background: #f3f3e9; transform: rotate(7deg); box-shadow: 1.2rem 1.5rem 3rem #384b3026; overflow: hidden; }
.phoneTop { display: flex; justify-content: space-between; padding: .8rem 1.25rem .65rem; font-size: .65rem; background: #fffef9; }
.phoneClock { font-weight: var(--font-weight-semibold); }
.phoneHeader { display: flex; align-items: center; gap: .5rem; padding: .6rem .75rem 1rem; background: #fffef9; border-bottom: 1px solid #e7e7dc; }
.phoneBack { color: var(--green); font-size: 1.7rem; }
.chatAvatar { width: 2.2rem; height: 2.2rem; border-radius: 50%; }
.chatTitle { display: block; font-size: .8rem; font-weight: var(--font-weight-semibold); }
.chatSubtitle { display: block; margin-top: .2rem; font-size: .55rem; color: var(--muted); }
.chatMenu { margin-left: auto; font-size: 1.4rem; }
.chatBody { padding: 1rem .75rem; }
.chatDay { display: block; width: fit-content; margin: 0 auto 1rem; border-radius: 1rem; padding: .25rem .7rem; background: #d7ddca; font-size: .6rem; color: #6a735d; }
.bubble { position: relative; padding: .7rem; margin-bottom: .9rem; border-radius: .9rem; box-shadow: 0 .15rem .2rem #42502f08; }
.bubbleIncoming { width: 12rem; background: white; border-bottom-left-radius: .2rem; }
.bubbleName { color: var(--green); font-size: .62rem; font-weight: var(--font-weight-semibold); }
.bubbleText { margin: .3rem 0 .5rem; font-size: .7rem; line-height: 1.6; }
.postcard { position: relative; height: 7.2rem; background: #e7ebd7; overflow: hidden; border-radius: .5rem; }
.postcardSun { position: absolute; top: .8rem; right: 1.5rem; width: 2.4rem; height: 2.4rem; border-radius: 50%; background: #f3bb72; }
.postcardHill { position: absolute; width: 14rem; height: 7rem; bottom: -3.5rem; border-radius: 50%; }
.hillBack { background: #adb98c; left: -4rem; transform: rotate(15deg); }
.hillFront { background: #647b4e; right: -4rem; transform: rotate(-20deg); }
.postcardFlower { position: absolute; font-size: 4rem; color: #f1deb2; left: 2rem; bottom: -.5rem; transform: rotate(15deg); }
.bubbleTime { display: block; margin-top: .2rem; font-size: .48rem; text-align: right; color: #89917f; }
.bubbleOutgoing { width: 11.2rem; margin-left: auto; background: #d9e7bb; border-bottom-right-radius: .2rem; }
.bubbleFile { display: flex; align-items: center; gap: .5rem; width: 12rem; background: white; }
.fileIcon { display: grid; place-items: center; background: #e8eddb; color: var(--green); width: 2rem; height: 2.5rem; border-radius: .4rem; font-size: 1.3rem; }
.fileName { display: block; font-size: .65rem; font-weight: var(--font-weight-medium); }
.fileMeta { display: block; margin-top: .3rem; font-size: .48rem; color: var(--muted); }
.chatComposer { position: absolute; bottom: 0; width: 100%; display: flex; align-items: center; gap: .5rem; padding: .7rem .7rem 1rem; background: #fffef9; color: #86917c; }
.composerHint { font-size: .65rem; }
.sendButton { margin-left: auto; background: var(--green); color: white; border-radius: 50%; width: 1.6rem; height: 1.6rem; display: grid; place-items: center; }
.floatingCard { position: absolute; bottom: 4.5rem; left: -1.5rem; display: flex; gap: .8rem; align-items: center; padding: 1.1rem 1.2rem; border: 1px solid #f8f9f0; background: #ffffffed; border-radius: 1rem; box-shadow: 0 .7rem 2rem #34432912; transform: rotate(-5deg); }
.floatingIcon { display: grid; place-items: center; width: 2.5rem; height: 2.5rem; background: #e5edcf; color: var(--green); border-radius: .7rem; font-size: 1.5rem; }
.floatingTitle { display: block; font-size: .8rem; font-weight: var(--font-weight-semibold); }
.floatingBody { display: block; font-size: .65rem; color: var(--muted); margin-top: .3rem; }
.illustrationLabel { position: absolute; bottom: -1.2rem; right: 1rem; color: #959d88; font-size: .6rem; }
.platformStrip { display: flex; gap: 2rem; justify-content: space-between; align-items: center; padding-block: 1.8rem 2.8rem; border-bottom: 1px solid #dfe3d6; }
.platformCaption { color: var(--muted); font-size: .8rem; }
.platformNames { display: flex; gap: 3rem; }
.platformName { font-size: .95rem; color: #5d6851; font-weight: var(--font-weight-medium); }
.features { padding-block: 6rem; }
.sectionIntro { max-width: 44rem; margin-bottom: 2.5rem; }
.sectionEyebrow { margin: 0 0 1rem; font-size: .72rem; letter-spacing: .13rem; color: var(--green); font-weight: var(--font-weight-medium); }
.sectionTitle { margin: 0; font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: var(--font-weight-semibold); line-height: 1.4; letter-spacing: -.06rem; }
.sectionBody { color: var(--muted); font-size: .92rem; line-height: 1.9; margin: 1rem 0 0; }
.featureGrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.featureCard { position: relative; background: #fffefa; border: 1px solid #e6e8de; padding: 1.6rem 1.4rem 2.8rem; border-radius: 1rem; }
.featureIcon { display: grid; place-items: center; width: 3rem; height: 3rem; font-size: 1.8rem; border-radius: 1rem; color: #536842; background: #ebefdc; }
.featureIcon2 { background: #f4e8d6; color: #99774a; }
.featureIcon3 { background: #e5eae7; color: #608073; }
.featureIcon4 { background: #edebf3; color: #827198; }
.featureTitle { font-size: 1.05rem; font-weight: var(--font-weight-semibold); margin: 1.3rem 0 .75rem; }
.featureBody { font-size: .8rem; color: var(--muted); line-height: 1.9; margin: 0; }
.featureIndex { position: absolute; bottom: 1rem; right: 1.3rem; font-size: .65rem; color: #a9ae9d; }
.downloads { padding-block: 5.5rem; background: #edf0e5; }
.downloadStatus { min-height: 1.3rem; color: #8d5338; font-size: .8rem; }
.downloadGrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.downloadCard { padding: 1.6rem; background: #fffefa; border: 1px solid #dde3d1; border-radius: 1rem; }
.downloadCardTop { display: flex; justify-content: space-between; align-items: center; }
.deviceIcon { font-size: 2.2rem; line-height: 1; }
.packageType { font-size: .65rem; padding: .35rem .55rem; border: 1px solid #e2e6d9; border-radius: .4rem; color: var(--muted); }
.downloadTitle { font-size: 1.3rem; font-weight: var(--font-weight-semibold); margin: 1.2rem 0 .65rem; }
.downloadNote { min-height: 3.7rem; font-size: .78rem; line-height: 1.75; color: var(--muted); margin: 0; }
.packageMeta { display: block; font-size: .7rem; color: #7d8771; margin: 1rem 0; min-height: 2rem; line-height: 1.6; }
.downloadButton { display: flex; width: 100%; border: 1px solid #bdc8af; color: var(--green); background: transparent; }
.downloadButton:hover { background: #e7efd8; }
.downloadButton[aria-disabled="true"] { cursor: not-allowed; color: #9a9f92; border-color: #e1e4d9; }
.checksumDetails { margin-top: 1rem; }
.checksumSummary { cursor: pointer; font-size: .65rem; color: #8b9380; }
.checksum { display: block; margin-top: .5rem; font-size: .65rem; overflow-wrap: anywhere; line-height: 1.6; }
.webBanner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; margin-top: 1.3rem; padding: 2rem; border-radius: 1rem; background: #34452c; color: #f5f7ed; }
.webBadge { color: #d4e6a4; font-size: .62rem; letter-spacing: .15rem; }
.webTitle { font-size: 1.4rem; font-weight: var(--font-weight-medium); margin: .65rem 0; }
.webBody { color: #c1cbb8; font-size: .8rem; line-height: 1.8; margin: 0; }
.buttonLight { background: #e0edb3; color: #34452c; white-space: nowrap; }
.macNote { margin: 1.4rem 0 0; color: #7a856e; font-size: .75rem; text-align: center; }
.releaseSection { display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem; padding-block: 5rem; border-bottom: 1px solid #dfe3d6; }
.releaseTitle { font-size: 1.6rem; line-height: 1.6; font-weight: var(--font-weight-semibold); margin: 0 0 1rem; }
.releaseDate { color: #939a88; font-size: .75rem; }
.releaseList { margin: 0; padding-left: 1.2rem; }
.releaseItem { padding-left: .4rem; margin-bottom: .8rem; color: #5f6a54; font-size: .85rem; line-height: 1.9; }
.releaseNote { color: #8a927f; font-size: .7rem; line-height: 1.8; }
.faqSection { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; padding-block: 5rem 6rem; }
.faqItem { border-bottom: 1px solid #dfe3d6; }
.faqQuestion { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.3rem 0; font-size: .9rem; cursor: pointer; list-style: none; }
.faqQuestion::-webkit-details-marker { display: none; }
.faqPlus { color: var(--green); font-size: 1.2rem; transition: transform .2s; }
.faqItem[open] .faqPlus { transform: rotate(45deg); }
.faqAnswer { color: var(--muted); font-size: .82rem; line-height: 1.9; margin: 0 1.5rem 1.4rem 0; }
.footer { display: flex; justify-content: space-between; gap: 2rem; padding-block: 2.5rem; border-top: 1px solid #dfe3d6; }
.footerTag { color: #8a927f; font-size: .75rem; margin: .8rem 0 0; }
.footerLinks { display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: 1.6rem; }
.copyright { width: 100%; text-align: right; font-size: .68rem; color: #9bA18f; }
:focus-visible { outline: 2px solid #456239; outline-offset: .3rem; }
[hidden] { display: none !important; }
@media (max-width: 64rem) {
 .hero { gap: 2rem; min-height: 39rem; }
 .heroTitle { font-size: 3rem; }
 .heroArt { height: 32rem; }
 .orbitOne { transform: rotate(-25deg) scale(.7); }
 .orbitTwo { transform: rotate(32deg) scale(.65); }
 .phone { transform: rotate(5deg) scale(.88); }
 .floatingCard { left: -2rem; bottom: 3.5rem; padding: .9rem; }
 .featureGrid { grid-template-columns: repeat(2, 1fr); }
 .platformNames { gap: 1.5rem; }
 .downloadCard { padding: 1.2rem; }
}
@media (max-width: 46rem) {
 .sectionShell, .navShell { width: calc(100% - 2.5rem); }
 .navShell { min-height: 4.5rem; gap: .5rem; }
 .brand { font-size: 1rem; gap: .4rem; }
 .brandIcon { width: 2rem; height: 2rem; }
 .nav { display: none; }
 .navActions { gap: .3rem; }
 .navWeb { font-size: .72rem; padding: .6rem .75rem; }
 .languageButton { font-size: .72rem; }
 .hero { grid-template-columns: 1fr; padding-block: 3.3rem 2rem; gap: 2rem; }
 .heroTitle { font-size: 2.9rem; letter-spacing: -.1rem; }
 .heroBody { font-size: .9rem; margin-block: 1.3rem 1.6rem; }
 .heroActions { gap: 1.3rem; }
 .button { font-size: .82rem; min-height: 3.1rem; padding: .85rem 1.1rem; }
 .heroArt { width: min(23rem, 92%); height: 30rem; margin-inline: auto; }
 .orbitOne { transform: rotate(-25deg) scale(.65); }
 .orbitTwo { transform: rotate(32deg) scale(.58); }
 .phone { transform: rotate(5deg) scale(.84); }
 .floatingCard { bottom: 3rem; left: -1rem; }
 .floatingTitle { font-size: .72rem; }
 .floatingBody { font-size: .6rem; }
 .starOne { right: 0; }
 .platformStrip { flex-direction: column; gap: 1.1rem; padding-block: 1rem 2rem; }
 .platformNames { gap: 1.8rem; }
 .platformName { font-size: .85rem; }
 .features, .downloads { padding-block: 3.5rem; }
 .featureGrid { gap: .8rem; }
 .featureCard { padding: 1.2rem 1rem 2.5rem; }
 .featureTitle { font-size: .92rem; }
 .featureBody { font-size: .75rem; }
 .downloadGrid { grid-template-columns: 1fr; }
 .downloadNote { min-height: unset; }
 .packageMeta { min-height: unset; }
 .downloadCard { padding: 1.5rem; }
 .webBanner { align-items: flex-start; flex-direction: column; padding: 1.5rem; gap: 1.5rem; }
 .webTitle { font-size: 1.2rem; }
 .releaseSection, .faqSection { grid-template-columns: 1fr; gap: 1.6rem; padding-block: 3rem; }
 .footer { flex-direction: column; padding-block: 2rem; }
 .footerLinks { justify-content: flex-start; gap: 1.2rem; }
 .copyright { text-align: left; }
}
@media (max-width: 23rem) {
 .heroTitle { font-size: 2.5rem; }
 .brand { font-size: .86rem; }
 .navWeb { padding-inline: .55rem; }
 .heroArt { height: 27rem; }
 .phone { transform: rotate(5deg) scale(.76); }
 .floatingCard { left: -.5rem; }
 .floatingBody { max-width: 9rem; }
 .platformNames { gap: 1rem; }
 .featureGrid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
 html { scroll-behavior: auto; }
 .button, .faqPlus { transition: none; }
}

.deviceImage { display: block; width: 2rem; height: 2.2rem; object-fit: contain; }