:root {
  color-scheme: light;
  --paper: #fbfbfa;
  --ink: #242824;
  --pine: #155e4f;
  --pine-deep: #10483d;
  --muted: #555f57;
  --line: #dce6dc;
  --sage: #ebf2e9;
  --mint: #b8dfcf;
  font-family: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { min-width: 320px; margin: 0; background: var(--paper); color: var(--ink); }
a { color: inherit; text-decoration: none; }
button, summary { font: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid #72bfa1; outline-offset: 5px; }
img { display: block; max-width: 100%; }
h1, h2, h3, p, figure { margin: 0; }
.shell { width: min(1240px, calc(100% - 76px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 40; top: -90px; left: 16px; padding: 10px 14px; border-radius: 8px; background: white; white-space: nowrap; }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(32,55,47,.09); background: rgba(247,248,242,.94); backdrop-filter: blur(14px); }
.header-inner { display: flex; align-items: center; gap: 42px; min-height: 82px; }
.brand { display: block; flex: none; }
.brand img { width: 132px; height: auto; }
.site-nav { display: flex; justify-content: center; flex: 1; gap: clamp(18px, 2.2vw, 34px); }
.site-nav a, .login-link { color: #3d4940; font-size: 14px; font-weight: 650; transition: color .2s ease; }
.site-nav a:hover, .login-link:hover, .text-action:hover, .footer-inner a:hover { color: var(--pine); }
.header-actions { display: flex; align-items: center; gap: 24px; flex: none; }
.header-cta, .button { display: inline-flex; justify-content: center; align-items: center; gap: 24px; font-weight: 700; transition: transform .22s ease, background .22s ease, box-shadow .22s ease; }
.header-cta { min-height: 42px; padding: 0 18px; border-radius: 9px; background: var(--pine); color: #fff; font-size: 14px; }
.header-cta:hover, .button-primary:hover { color: #fff; background: var(--pine-deep); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(21,94,79,.17); }
.header-cta:active, .button:active { transform: translateY(0); }
.button { min-height: 56px; padding: 0 26px; border-radius: 10px; font-size: 15px; }
.button-primary { background: var(--pine); color: #fff; }
.text-action { display: inline-flex; align-items: center; gap: 13px; color: #3e6758; font-size: 15px; font-weight: 700; transition: color .2s ease; }

.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--pine); font-size: 13px; font-weight: 750; letter-spacing: .06em; }
.eyebrow-mark { width: 16px; height: 16px; border: 5px solid var(--mint); border-left-color: var(--pine); border-radius: 50%; transform: rotate(-25deg); }
.hero { display: grid; grid-template-columns: minmax(0,.88fr) minmax(0,1.12fr); align-items: center; gap: clamp(36px, 5vw, 70px); padding-block: 94px 113px; }
.hero-copy { position: relative; z-index: 2; padding-bottom: 22px; }
.hero h1 { margin: 27px 0 24px; font-size: clamp(50px, 5.5vw, 78px); font-weight: 740; line-height: 1.13; letter-spacing: -.078em; text-wrap: balance; }
.hero h1 span { color: var(--pine); }
.hero-lead { max-width: 470px; color: #53675b; font-size: 16px; line-height: 1.9; text-wrap: pretty; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px 29px; margin-top: 32px; }
.demo-note { margin-top: 19px; color: #58645a; font-size: 13px; line-height: 1.6; }
.hero-scene { position: relative; min-width: 0; height: 530px; }
.scene-orbit { position: absolute; pointer-events: none; border: 1px solid rgba(88,165,131,.19); border-radius: 50%; transform: rotate(-22deg); }
.scene-orbit-one { width: 720px; height: 340px; top: 80px; left: -88px; }
.scene-orbit-two { width: 570px; height: 450px; top: -10px; left: 50px; border-color: rgba(88,165,131,.13); }
.product-frame { position: absolute; z-index: 1; top: 25px; right: 0; width: min(100%, 650px); overflow: hidden; border: 1px solid #dce8dc; border-radius: 18px; background: #fff; box-shadow: 0 40px 80px rgba(27,77,52,.14), 0 8px 22px rgba(27,77,52,.05); transform: rotate(-1.4deg); }
.frame-topbar { display: flex; align-items: center; justify-content: space-between; height: 48px; padding: 0 19px; border-bottom: 1px solid #e6ece5; background: #fff; color: #59665d; font-size: 12px; }
.frame-topbar-left, .frame-topbar-right { display: inline-flex; align-items: center; gap: 6px; }
.frame-topbar-left i { width: 6px; height: 6px; border-radius: 50%; background: #cad6cb; }
.frame-topbar-left b { margin-left: 9px; font-weight: 700; }
.frame-topbar-right { color: #3d826c; }
.live-dot { display: inline-block; width: 7px; height: 7px; flex: none; border-radius: 50%; background: #69ae91; box-shadow: 0 0 0 3px #e0f1e7; }
.frame-body { display: grid; grid-template-columns: 57% 43%; min-height: 371px; }
.slide-panel { min-width: 0; padding: 16px 16px 0; background: #f3f6f1; }
.slide-page { position: relative; height: 320px; overflow: hidden; padding: 34px 29px; background: #f7f4ed; box-shadow: 0 1px 4px rgba(64,64,42,.12); }
.slide-kicker { display: block; color: #5f6a5e; font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.slide-rule { display: block; width: 100%; height: 1px; margin-top: 12px; background: #d6d7ce; }
.slide-page strong { display: block; margin-top: 39px; color: #263f34; font-family: Georgia, "Times New Roman", serif; font-size: clamp(29px, 3vw, 42px); font-weight: 700; line-height: 1.06; letter-spacing: -.04em; }
.slide-subtitle { display: block; max-width: 210px; margin-top: 14px; color: #5c685d; font-size: 11px; line-height: 1.5; }
.slide-highlight { position: absolute; width: 138px; height: 10px; top: 179px; left: 29px; border-bottom: 5px solid #dbab81; border-radius: 50%; transform: rotate(-4deg); }
.slide-sticker { position: absolute; right: 19px; bottom: 23px; padding: 9px 12px; border: 1px solid #e5d1b4; border-radius: 8px; background: #fff7e9; color: #865a39; font-size: 11px; font-weight: 750; transform: rotate(3deg); }
.slide-pagination { display: flex; justify-content: space-between; padding: 10px 2px; color: #5e7164; font-size: 11px; }
.caption-panel { min-width: 0; padding: 24px 18px; border-left: 1px solid #e7ede5; background: #fcfdfa; }
.caption-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; font-size: 12px; }
.caption-head b { color: #264638; font-size: 13px; }
.caption-head span { color: #7d9586; }
.caption-item { display: grid; grid-template-columns: 24px 1fr; gap: 8px; padding: 12px 0; border-top: 1px solid #ebefea; }
.caption-language { color: #557f66; font-size: 11px; font-weight: 800; }
.caption-item p { color: #314b3c; font-size: 13px; line-height: 1.6; }
.caption-item-cn { margin-inline: -7px; padding-inline: 7px; border-radius: 7px; border-top: 0; background: #e9f3eb; }
.caption-item-cn p { color: #245b49; font-weight: 650; }
.floating-note { position: absolute; z-index: 2; bottom: 55px; left: -28px; display: flex; align-items: center; gap: 12px; min-width: 214px; padding: 13px 18px 13px 12px; border: 1px solid #e2eade; border-radius: 12px; background: #fff; box-shadow: 0 18px 35px rgba(31,82,54,.12); transform: rotate(3deg); }
.floating-note-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 8px; background: #e6f2e9; color: var(--pine); font-size: 20px; }
.floating-note b { display: block; }
.floating-note b { color: #315648; font-size: 13px; }
.hero-scene figcaption { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }

.journey-section { border-block: 1px solid #e0e9df; background: #eaf2e9; }
.journey-inner { display: grid; grid-template-columns: minmax(0,.82fr) minmax(0,1.18fr); gap: clamp(55px, 9vw, 130px); padding-block: 97px 105px; }
.journey-heading h2, .feature-copy h2, .review-head h2, .questions-heading h2, .closing-inner h2 { font-weight: 710; letter-spacing: -.065em; text-wrap: balance; }
.journey-heading h2 { margin: 19px 0 18px; font-size: clamp(36px, 3.4vw, 44px); line-height: 1.28; }
.journey-heading > p:last-child { max-width: 390px; color: var(--muted); font-size: 16px; line-height: 1.8; }
.journey-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid #c9dacb; }
.journey-list li { display: grid; grid-template-columns: 96px 1fr 20px; gap: 18px; align-items: start; min-height: 134px; padding: 23px 0; border-bottom: 1px solid #c9dacb; }
.journey-index { display: flex; align-items: center; gap: 8px; padding-top: 4px; color: #44705b; font-size: 13px; font-weight: 750; white-space: nowrap; }
.journey-index i { width: 15px; height: 1px; background: currentColor; }
.journey-list h3 { margin-bottom: 7px; font-size: 21px; letter-spacing: -.04em; }
.journey-list p { max-width: 390px; color: #4c5d50; font-size: 15px; line-height: 1.75; }
.journey-arrow { color: #659f83; font-size: 18px; }

.feature-section { display: grid; grid-template-columns: minmax(0,.84fr) minmax(0,1.16fr); gap: clamp(50px, 8vw, 120px); align-items: center; padding-block: 145px; }
.feature-copy h2 { margin: 20px 0 23px; font-size: clamp(36px, 3.5vw, 46px); line-height: 1.24; }
.feature-copy > p:not(.eyebrow) { max-width: 450px; color: var(--muted); font-size: 16px; line-height: 1.8; }
.feature-detail { display: flex; align-items: flex-start; gap: 14px; max-width: 400px; margin-top: 30px; color: #456b52; font-size: 14px; line-height: 1.65; font-weight: 650; }
.detail-line { width: 27px; height: 1px; flex: none; margin-top: 10px; background: #71aa8d; }
.feature-art { position: relative; min-width: 0; height: 520px; overflow: hidden; border-radius: 26px; }
.caption-art { background: radial-gradient(circle at 80% 15%, #d9eddf 0, transparent 45%), #e7efe5; }
.caption-art-paper { position: absolute; left: 11%; top: 65px; width: 55%; height: 395px; padding: 38px 35px; background: #f9f7ef; box-shadow: 0 22px 40px rgba(34,72,51,.15); transform: rotate(-6deg); }
.caption-art-paper span { color: #627568; font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.caption-art-paper strong { display: block; margin: 43px 0 33px; color: #314638; font-family: Georgia, serif; font-size: clamp(28px, 3vw, 43px); line-height: 1.08; }
.caption-art-paper i { display: block; width: 78%; height: 6px; margin-top: 11px; border-radius: 3px; background: #d9ded2; }
.caption-art-paper i:nth-of-type(2) { width: 66%; }
.caption-art-paper i:nth-of-type(3) { width: 72%; }
.caption-art-paper em { display: inline-block; margin-top: 35px; padding: 7px 10px; border-radius: 6px; background: #f6e6d5; color: #865d3d; font-size: 12px; font-style: normal; font-weight: 700; }
.caption-art-card { position: absolute; right: 5%; top: 142px; width: 55%; min-height: 246px; padding: 24px; border: 1px solid #d9e5d8; border-radius: 16px; background: #fff; box-shadow: 0 26px 50px rgba(24,78,52,.2); transform: rotate(2deg); }
.art-card-label { display: flex; align-items: center; gap: 10px; color: #3f7958; font-size: 12px; font-weight: 750; }
.caption-art-card > p { margin-top: 27px; color: #244136; font-size: 16px; font-weight: 650; line-height: 1.6; }
.art-card-translation { margin-top: 14px; padding: 13px 12px; border-radius: 8px; background: #e9f3eb; color: #236049; font-size: 14px; line-height: 1.6; }
.art-card-time { display: block; margin-top: 15px; color: #607667; font-size: 12px; text-align: right; }
.art-caption { position: absolute; right: 24px; bottom: 18px; color: #596e5e; font-size: 12px; }

.annotation-section { background: #f1f0e9; }
.annotation-inner { display: grid; grid-template-columns: minmax(0,1.13fr) minmax(0,.87fr); gap: clamp(50px, 9vw, 125px); align-items: center; padding-block: 133px; }
.annotation-art { position: relative; min-width: 0; height: 520px; overflow: hidden; border: 1px solid #e2e0d6; border-radius: 26px; background: radial-gradient(circle at 12% 90%, #e0e6d9 0, transparent 43%), #e9e9df; }
.annotation-page { position: absolute; top: 36px; left: 12%; width: 66%; height: 492px; padding: 37px 35px; background: #faf9f3; box-shadow: 0 18px 37px rgba(65,66,41,.14); transform: rotate(-3deg); }
.annotation-page > span { color: #59685a; font-size: 11px; font-weight: 800; letter-spacing: .1em; }
.annotation-page strong { display: block; margin-top: 50px; color: #354638; font-family: Georgia, serif; font-size: clamp(24px, 3.1vw, 40px); line-height: 1.13; }
.annotation-page p { max-width: 295px; margin-top: 33px; color: #788277; font-family: Georgia, serif; font-size: 13px; line-height: 1.8; }
.annotation-page mark { display: inline-block; margin-top: 12px; padding: 3px 5px; background: #f7e2ab; color: #4f584b; font-family: Georgia, serif; font-size: 12px; }
.annotation-page i { display: block; width: 72px; height: 18px; margin: 8px 0 0 3px; border-bottom: 3px solid #b98b66; border-radius: 50%; transform: rotate(-5deg); }
.annotation-comment { position: absolute; right: 4%; bottom: 57px; width: 47%; min-height: 167px; padding: 20px 22px; border: 1px solid #e0e5d9; border-radius: 12px; background: #fff; box-shadow: 0 19px 36px rgba(55,73,46,.16); transform: rotate(3deg); }
.annotation-comment span { color: #307257; font-size: 12px; font-weight: 800; }
.annotation-comment p { margin-top: 14px; color: #355144; font-size: 14px; line-height: 1.6; font-weight: 650; }
.annotation-comment small { display: block; margin-top: 10px; color: #617764; font-size: 11px; }
.annotation-page-count { position: absolute; left: 24px; bottom: 18px; color: #5f7963; font-size: 12px; font-weight: 800; }
.annotation-page-count i { color: #adc0ad; font-style: normal; }
.annotation-copy { padding-left: 5px; }

.review-section { padding-block: 139px 152px; }
.review-head { display: flex; justify-content: space-between; align-items: end; gap: 70px; margin-bottom: 43px; }
.review-head h2 { margin-top: 19px; font-size: clamp(36px, 3.5vw, 46px); line-height: 1.23; }
.review-head > p { max-width: 420px; padding-bottom: 5px; color: var(--muted); font-size: 16px; line-height: 1.8; }
.review-art { position: relative; display: grid; grid-template-columns: 270px 1fr; min-height: 430px; overflow: hidden; border: 1px solid #dce7db; border-radius: 25px; background: #fcfdfa; box-shadow: 0 22px 55px rgba(26,78,45,.07); }
.review-sidebar { display: flex; flex-direction: column; gap: 10px; padding: 34px 23px; border-right: 1px solid #dce8da; background: #e9f1e8; }
.review-sidebar-label { margin-bottom: 15px; color: #557b60; font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.review-sidebar b { margin-bottom: 7px; color: #245343; font-size: 17px; }
.review-sidebar > span:not(.review-sidebar-label) { padding: 11px 12px; border-radius: 8px; color: #5a705f; font-size: 13px; }
.review-sidebar > span.review-sidebar-active { display: flex; justify-content: space-between; color: #235c47; background: #d6e9d7; font-weight: 750; }
.review-sidebar-active i { font-style: normal; }
.review-content { padding: 41px 55px 65px; }
.review-content-top { display: flex; justify-content: space-between; color: #5e7563; font-size: 13px; }
.review-content-top i { margin-inline: 7px; font-style: normal; }
.review-content h3 { margin-top: 48px; font-size: 30px; letter-spacing: -.05em; }
.review-content > p { margin-top: 10px; color: #526756; font-size: 14px; }
.review-records { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-top: 37px; }
.review-records > div { min-height: 125px; padding: 18px; border: 1px solid #e3ece0; border-radius: 13px; background: #f5f8f2; }
.record-icon { display: grid; place-items: center; width: 31px; height: 31px; margin-bottom: 14px; border-radius: 7px; font-size: 16px; }
.record-caption { background: #e2eee5; color: #376b54; }
.record-pen { background: #f3e5d5; color: #a4714d; }
.record-note { background: #e3eee8; color: #4a7966; }
.review-records b, .review-records small { display: block; }
.review-records b { color: #315044; font-size: 14px; }
.review-records small { margin-top: 5px; color: #526756; font-size: 12px; }
.review-art-caption { position: absolute; right: 24px; bottom: 18px; color: #667b69; font-size: 12px; }

.questions-section { border-block: 1px solid #e1e9df; background: #edf3ea; }
.questions-inner { display: grid; grid-template-columns: minmax(0,.75fr) minmax(0,1.25fr); gap: clamp(60px, 9vw, 130px); padding-block: 104px 113px; }
.questions-heading h2 { margin: 19px 0 14px; font-size: clamp(32px, 3.3vw, 43px); line-height: 1.24; }
.questions-heading > p:not(.eyebrow) { margin-bottom: 23px; color: #56695a; font-size: 16px; line-height: 1.75; }
.question-list { border-top: 1px solid #cbdacb; }
.question-list details { border-bottom: 1px solid #cbdacb; }
.question-list summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 23px 3px; color: #2d4a3c; font-size: 16px; font-weight: 700; cursor: pointer; list-style: none; }
.question-list summary::-webkit-details-marker { display: none; }
.question-list summary span { color: #5a9575; font-size: 22px; font-weight: 400; transition: transform .2s ease; }
.question-list details[open] summary span { transform: rotate(45deg); }
.question-list details p { max-width: 550px; padding: 0 35px 25px 3px; color: #4e6152; font-size: 15px; line-height: 1.8; }

.closing-section { overflow: hidden; background: #175e50; color: #fff; }
.closing-inner { position: relative; display: flex; align-items: end; justify-content: space-between; gap: 35px; min-height: 387px; padding-block: 83px 88px; }
.closing-inner > div { position: relative; z-index: 1; }
.closing-inner .eyebrow { color: #a8dcc1; }
.closing-inner h2 { margin-top: 20px; font-size: clamp(36px, 3.7vw, 48px); line-height: 1.22; }
.closing-inner p:not(.eyebrow) { margin-top: 15px; color: #d4e8da; font-size: 16px; line-height: 1.7; }
.closing-orbit { position: absolute; z-index: 0; top: -190px; right: -140px; width: 760px; height: 760px; border: 1px solid rgba(221,255,233,.18); border-radius: 50%; box-shadow: 0 0 0 95px rgba(221,255,233,.025), 0 0 0 185px rgba(221,255,233,.025); pointer-events: none; }
.button-light { position: relative; z-index: 1; flex: none; background: #f5f9f1; color: #165743; }
.button-light:hover { background: #dff1e6; color: #145744; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(8,48,35,.18); }
.site-footer { background: #f7f8f2; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 42px; align-items: start; padding-block: 48px 33px; }
.footer-brand img { width: 104px; height: auto; }
.footer-inner p { margin-top: 15px; color: #596d5f; font-size: 14px; }
.footer-inner nav { display: flex; gap: 28px; color: #4c6151; font-size: 14px; font-weight: 650; }
.footer-bottom { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 16px 28px; padding-top: 28px; border-top: 1px solid #e2e9df; }
.footer-bottom small { color: #5f7266; font-size: 12px; }
.footer-bottom nav { flex-wrap: wrap; gap: 12px 23px; font-size: 12px; font-weight: 600; }

@media (max-width: 1100px) {
  .header-inner { gap: 25px; }
  .site-nav { gap: 16px; }
  .site-nav a { font-size: 14px; }
  .hero { gap: 26px; }
  .hero h1 { font-size: clamp(48px, 5vw, 64px); }
  .product-frame { top: 49px; }
}
@media (max-width: 900px) {
  .shell { width: min(100% - 48px, 1240px); }
  .site-nav { display: none; }
  .header-actions { margin-left: auto; }
  .hero { grid-template-columns: 1fr; gap: 36px; padding-block: 76px 80px; }
  .hero-copy { max-width: 660px; }
  .hero-scene { width: min(100%, 710px); margin-inline: auto; }
  .journey-inner, .feature-section, .annotation-inner, .questions-inner { gap: 50px; }
  .annotation-art { height: 470px; }
  .annotation-page { height: 450px; }
  .annotation-comment { width: 56%; }
  .review-art { grid-template-columns: 220px 1fr; }
  .review-content { padding-inline: 30px; }
}
@media (max-width: 700px) {
  html { scroll-padding-top: 72px; }
  .site-header { position: static; }
  .header-inner { min-height: 70px; }
  .brand img { width: 110px; }
  .header-actions { gap: 12px; }
  .header-cta { min-height: 38px; padding-inline: 14px; font-size: 13px; }
  .login-link { font-size: 13px; }
  .hero { padding-block: 66px 72px; }
  .hero h1 { font-size: clamp(45px, 8vw, 61px); }
  .hero-lead { font-size: 16px; }
  .hero-scene { height: 470px; }
  .product-frame { top: 15px; }
  .floating-note { left: 0; bottom: 39px; }
  .journey-inner, .feature-section, .annotation-inner, .questions-inner { grid-template-columns: 1fr; }
  .journey-inner { padding-block: 73px 79px; }
  .journey-heading > p:last-child { max-width: 580px; }
  .feature-section { padding-block: 93px; }
  .annotation-inner { padding-block: 87px; }
  .annotation-copy { grid-row: 1; padding-left: 0; }
  .review-section { padding-block: 93px; }
  .review-head { display: block; }
  .review-head > p { max-width: 560px; margin-top: 21px; }
  .questions-inner { padding-block: 82px 91px; }
  .closing-inner { min-height: 0; align-items: start; flex-direction: column; padding-block: 74px 80px; }
}
@media (max-width: 520px) {
  .shell { width: min(100% - 36px, 1240px); }
  .header-cta { gap: 5px; }
  .hero { padding-block: 54px 63px; }
  .hero h1 { margin-top: 22px; font-size: clamp(42px, 11vw, 54px); }
  .hero-actions { gap: 21px; }
  .button { min-height: 51px; padding-inline: 20px; }
  .hero-scene { height: 354px; }
  .scene-orbit { display: none; }
  .product-frame { top: 10px; left: 0; width: 100%; transform: none; }
  .frame-topbar { height: 35px; padding-inline: 10px; font-size: 10px; }
  .frame-body { min-height: 258px; grid-template-columns: 58% 42%; }
  .slide-panel { padding: 8px 8px 0; }
  .slide-page { height: 225px; padding: 19px 15px; }
  .slide-kicker, .slide-rule { display: none; }
  .slide-page strong { margin-top: 29px; font-size: clamp(22px, 6vw, 31px); }
  .slide-subtitle { margin-top: 9px; font-size: 10px; }
  .slide-highlight { top: 122px; left: 15px; width: 92px; }
  .slide-sticker { right: 5px; bottom: 11px; padding: 5px; font-size: 11px; }
  .slide-pagination { padding-block: 7px; font-size: 11px; }
  .caption-panel { padding: 13px 8px; }
  .caption-head b { font-size: 11px; }
  .caption-head span, .caption-language { font-size: 10px; }
  .caption-item { grid-template-columns: 17px 1fr; gap: 3px; padding-block: 8px; }
  .caption-item p { font-size: 11px; line-height: 1.5; }
  .caption-item-cn { margin-inline: -3px; padding-inline: 3px; }
  .floating-note { bottom: 14px; min-width: 160px; padding: 7px; gap: 7px; }
  .floating-note-icon { width: 27px; height: 27px; font-size: 15px; }
  .floating-note b { font-size: 11px; }
  .journey-heading h2, .feature-copy h2, .review-head h2, .questions-heading h2 { font-size: clamp(32px, 8vw, 39px); }
  .journey-list li { grid-template-columns: 66px 1fr 12px; gap: 10px; min-height: 119px; }
  .journey-list h3 { font-size: 18px; }
  .journey-list p { font-size: 14px; }
  .feature-art, .annotation-art { height: 390px; }
  .caption-art-paper { left: 6%; top: 45px; width: 63%; height: 315px; padding: 26px 19px; }
  .caption-art-paper strong { margin-top: 34px; font-size: 26px; }
  .caption-art-paper i { margin-top: 9px; }
  .caption-art-card { right: 3%; top: 110px; width: 60%; min-height: 220px; padding: 15px; }
  .caption-art-card > p { margin-top: 20px; font-size: 14px; }
  .art-card-translation { font-size: 12px; }
  .annotation-page { top: 25px; left: 7%; width: 76%; height: 383px; padding: 24px; }
  .annotation-page strong { margin-top: 35px; font-size: 26px; }
  .annotation-page p { margin-top: 24px; font-size: 12px; }
  .annotation-page mark { font-size: 11px; }
  .annotation-comment { right: 3%; bottom: 39px; width: 62%; min-height: 130px; padding: 14px; }
  .annotation-comment p { margin-top: 9px; font-size: 12px; }
  .review-art { grid-template-columns: 1fr; min-height: 410px; }
  .review-sidebar { display: block; padding: 16px 18px; border-right: 0; border-bottom: 1px solid #dce8da; }
  .review-sidebar-label, .review-sidebar > span:not(.review-sidebar-active) { display: none; }
  .review-sidebar b { display: inline; margin-right: 15px; font-size: 14px; }
  .review-sidebar > span.review-sidebar-active { display: inline-flex; padding: 5px 8px; font-size: 12px; }
  .review-sidebar-active i { display: none; }
  .review-content { padding: 24px 17px 50px; }
  .review-content h3 { margin-top: 35px; font-size: 25px; }
  .review-content > p { font-size: 13px; }
  .review-records { gap: 5px; margin-top: 26px; }
  .review-records > div { min-height: 104px; padding: 9px; }
  .record-icon { margin-bottom: 9px; }
  .review-records b { font-size: 12px; }
  .review-records small { font-size: 11px; }
  .footer-inner { grid-template-columns: 1fr; gap: 22px; }
  .footer-inner nav { flex-wrap: wrap; gap: 13px 22px; }
  .footer-bottom { grid-column: auto; flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* Public-site navigation and centered showcase */
.icon-defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.site-header { z-index: 30; background: rgba(251,251,250,.97); border-bottom-color: #e9ece8; }
.header-inner { min-height: 64px; gap: 30px; }
.brand img { width: 122px; }
.site-nav { align-self: stretch; justify-content: center; gap: 5px; }
.nav-dropdown { position: relative; display: flex; align-items: stretch; }
.nav-dropdown summary, .nav-direct { display: flex; align-items: center; gap: 7px; padding: 0 14px; border-radius: 8px; color: #303630; font-size: 15px; font-weight: 650; cursor: pointer; list-style: none; transition: background .18s ease, color .18s ease; }
.nav-dropdown summary::-webkit-details-marker { display: none; }
.nav-dropdown summary:hover, .nav-dropdown[open] summary, .nav-dropdown:focus-within summary, .nav-direct:hover { background: #f0f2ef; color: #17251d; }
@media (min-width: 1201px) {
  /* Keep dropdown wrappers full-height so the inset trigger still meets its panel. */
  .site-nav > .nav-dropdown { align-items: center; }
  .site-nav > .nav-dropdown > summary, .site-nav > .nav-direct { align-self: center; min-height: 40px; }
}
.nav-chevron { width: 6px; height: 6px; margin-top: -3px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); transition: transform .18s ease; }
.nav-dropdown[open] .nav-chevron { transform: translateY(3px) rotate(225deg); }
.mega-panel { position: absolute; z-index: 32; top: calc(100% - 1px); left: 50%; display: block; width: 370px; max-height: min(78vh, 690px); overflow-y: auto; padding: 15px; border: 1px solid #ecefec; border-radius: 17px; background: #fff; box-shadow: 0 24px 70px rgba(29,46,36,.16); opacity: 0; visibility: hidden; pointer-events: none; transform: translate(-50%, -7px); transition: opacity .18s ease, transform .18s ease, visibility .18s ease; }
.nav-dropdown[open] .mega-panel { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0); }
.mega-heading { display: block; padding: 5px 11px 12px; color: #637166; font-size: 13px; font-weight: 750; letter-spacing: .04em; }
.mega-item { display: flex; align-items: center; gap: 12px; min-height: 65px; padding: 9px; border-radius: 11px; transition: background .17s ease; }
.mega-item:hover, .mega-item:focus-visible { background: #f3f6f3; }
.mega-icon { display: grid; place-items: center; width: 40px; height: 40px; flex: none; border-radius: 10px; background: #f6f6f5; color: #262b27; }
.mega-icon svg { width: 33px; height: 33px; fill: none; overflow: visible; }
@media (forced-colors: active) {
  .mega-icon { --bc-icon-ink: CanvasText; --bc-icon-pine: LinkText; --bc-icon-mint: Canvas; --bc-icon-paper: Canvas; }
}
.mega-item strong, .mega-item small { display: block; }
.mega-item strong { color: #242b25; font-size: 15px; font-weight: 700; }
.mega-item small { margin-top: 4px; color: #5c6b60; font-size: 13px; line-height: 1.45; }
.mega-foot { display: block; margin-top: 7px; padding: 12px 10px 2px; border-top: 1px solid #edf1ed; color: #57695b; font-size: 12px; line-height: 1.5; }
.header-actions { gap: 19px; }
.language-menu { position: relative; flex: none; }
.language-menu summary { display: flex; align-items: center; gap: 8px; min-height: 38px; padding: 0 10px; border-radius: 8px; color: #303630; font-size: 14px; font-weight: 650; cursor: pointer; list-style: none; white-space: nowrap; }
.language-menu summary::-webkit-details-marker { display: none; }
.language-menu summary:hover, .language-menu[open] summary { background: #f0f2ef; }
.language-menu summary svg { width: 18px; height: 18px; fill: none; }
.language-menu[open] .nav-chevron { transform: translateY(3px) rotate(225deg); }
.language-panel { position: absolute; z-index: 35; top: calc(100% + 10px); right: 0; width: 162px; padding: 7px; border: 1px solid #ecefec; border-radius: 14px; background: #fff; box-shadow: 0 22px 55px rgba(29,46,36,.14); }
.language-panel button, .mobile-language button { border: 0; background: transparent; color: #283029; font: inherit; cursor: pointer; }
.language-panel button { display: block; width: 100%; min-height: 40px; padding: 8px 11px; border-radius: 8px; font-size: 14px; text-align: left; }
.language-panel button:hover, .language-panel button:focus-visible, .language-panel button[aria-pressed="true"] { background: #f1f3f0; }
.language-panel button[aria-pressed="true"] { font-weight: 750; }
.mobile-language { display: none; }
.header-cta { min-height: 38px; padding: 0 20px; border-radius: 999px; background: #202622; font-size: 15px; }
.header-cta:hover { background: #35483e; }
.menu-toggle { display: none; width: 37px; height: 37px; border: 1px solid #dce5dc; border-radius: 9px; background: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 16px; height: 1.5px; margin: 4px auto; background: #263c30; }
.announcement { min-height: 40px; background: #f2f3f1; }
.announcement a { display: flex; align-items: center; justify-content: center; gap: 9px; min-height: 40px; padding: 7px 18px; color: #3f4d42; font-size: 13px; }
.announcement strong { color: #283d30; font-weight: 750; }
.announcement a:hover { color: #176452; }

.hero.hero-centered { display: block; padding-block: 78px 80px; }
.hero-centered .hero-copy { max-width: 900px; margin-inline: auto; padding: 0; text-align: center; }
.hero-centered h1 { margin: 0 0 18px; color: #202320; font-family: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif; font-size: clamp(46px, 4.5vw, 62px); font-weight: 700; line-height: 1.25; letter-spacing: -.035em; }
.hero-centered h1 span { color: #202320; white-space: nowrap; }
.hero-centered h1 .hero-title-line { display: block; white-space: normal; }
.hero-centered .hero-lead-line { display: block; }
.hero-centered .hero-lead { max-width: 740px; margin-inline: auto; color: #4f5951; font-size: 17px; line-height: 1.75; }
.hero-centered .hero-actions { justify-content: center; margin-top: 23px; }
.hero-centered .button-primary { min-height: 45px; padding: 0 25px; border-radius: 999px; background: #202622; font-size: 14px; }
.hero-centered .button-primary:hover { background: #355043; }
.hero-centered .demo-note { margin-top: 15px; color: #59665c; font-size: 13px; }
.hero-centered .hero-scene { width: min(100%, 1080px); max-width: none; height: 590px; margin: 38px auto 0; }
.hero-collage .scene-orbit { display: none; }
.hero-collage .product-frame { top: 58px; left: 50%; right: auto; width: min(650px, 72%); transform: translateX(-50%) rotate(-2deg); }
.collage-card { position: absolute; z-index: 2; display: flex; flex-direction: column; border: 1px solid #e7ebe4; border-radius: 13px; box-shadow: 0 19px 43px rgba(38,61,43,.13); }
.collage-card span { color: #486d54; font-size: 12px; font-weight: 750; }
.collage-card strong { margin-top: 27px; color: #293b2e; font-size: 21px; font-weight: 670; line-height: 1.28; letter-spacing: -.04em; }
.collage-card small { margin-top: auto; color: #526c57; font-size: 12px; line-height: 1.45; }
.collage-card-question { top: 208px; left: 4%; width: 246px; min-height: 213px; padding: 24px; background: #f4f3dc; transform: rotate(-7deg); }
.collage-card-note { top: 153px; right: 2%; width: 233px; min-height: 206px; padding: 23px; background: #e2f0e8; transform: rotate(6deg); }
.collage-card-note strong { font-size: 19px; }
.hero-collage .floating-note { bottom: 64px; left: auto; right: 15%; min-width: 245px; transform: rotate(4deg); }
.journey-section { background: #f2f5f0; }
.annotation-section { background: #f6f5f0; }

@media (max-width: 1050px) {
  .hero-collage .product-frame { width: 68%; }
  .collage-card-question { left: 0; }
  .collage-card-note { right: 0; }
  .hero-collage .floating-note { right: 8%; }
}
@media (min-width: 1201px) and (max-width: 1300px) {
  .header-inner { gap: 16px; }
  .site-nav { gap: 0; }
  .nav-dropdown summary, .nav-direct { padding-inline: 10px; font-size: 14px; }
  .header-actions { gap: 11px; }
  .language-menu summary { font-size: 13px; }
  .header-cta { padding-inline: 15px; font-size: 14px; }
}
@media (max-width: 1200px) {
  .site-header { position: sticky; }
  .header-inner { position: relative; min-height: 66px; }
  .site-nav { position: absolute; top: calc(100% + 1px); left: -24px; right: -24px; display: none; flex-direction: column; align-items: stretch; gap: 0; max-height: calc(100dvh - 66px); overflow-y: auto; padding: 10px 24px 20px; border-bottom: 1px solid #e3e9e2; background: #fbfbfa; box-shadow: 0 18px 30px rgba(26,48,32,.1); }
  .site-nav.is-open { display: flex; }
  .nav-dropdown { display: block; border-bottom: 1px solid #e7ece5; }
  .nav-dropdown summary, .nav-direct { min-height: 48px; padding: 0 5px; font-size: 15px; }
  .nav-direct { border-bottom: 1px solid #e7ece5; }
  .mega-panel { position: static; display: none; width: 100%; max-height: none; overflow: visible; padding: 4px 0 15px; border: 0; border-radius: 0; box-shadow: none; opacity: 1; visibility: visible; pointer-events: auto; transform: none; transition: none; }
  .nav-dropdown[open] .mega-panel { display: block; transform: none; }
  .menu-toggle { display: block; }
  .hero.hero-centered { padding-block: 68px 65px; }
  .hero-centered .hero-scene { height: 530px; }
  .hero-collage .product-frame { top: 62px; width: 74%; }
  .collage-card-question { top: 215px; width: 210px; min-height: 178px; padding: 17px; }
  .collage-card-note { top: 145px; width: 192px; min-height: 170px; padding: 17px; }
  .collage-card strong { margin-top: 20px; font-size: 16px; }
  .collage-card-note strong { font-size: 15px; }
  .hero-collage .floating-note { bottom: 48px; }
}
@media (max-width: 700px) {
  .header-cta { min-height: 36px; }
  .site-nav { left: -24px; right: -24px; }
  .hero.hero-centered { padding-block: 56px 62px; }
  .hero-centered h1 { font-size: clamp(42px, 7vw, 52px); }
  .hero-centered .hero-scene { height: 435px; margin-top: 34px; }
  .hero-collage .product-frame { top: 20px; width: 83%; }
  .collage-card { display: none; }
  .hero-collage .floating-note { right: 0; bottom: 18px; }
  html[lang="en"] .hero-centered h1 span { white-space: normal; }
}
@media (max-width: 520px) {
  .site-nav { left: -18px; right: -18px; padding-inline: 18px; }
  .header-actions { gap: 9px; }
  .language-menu { display: none; }
  .login-link { display: none; }
  .mobile-language { display: block; padding: 16px 5px 4px; }
  .mobile-language > span { display: block; margin-bottom: 12px; color: #5b695e; font-size: 13px; font-weight: 700; }
  .mobile-language > div { display: flex; flex-wrap: wrap; gap: 8px; }
  .mobile-language button { min-height: 36px; padding: 6px 12px; border: 1px solid #e3e8e1; border-radius: 8px; font-size: 13px; }
  .mobile-language button[aria-pressed="true"] { border-color: #b7c8b9; background: #eef2ed; font-weight: 700; }
  .hero.hero-centered { padding-block: 48px 55px; }
  .hero-centered h1 { margin-top: 0; font-size: clamp(38px, 9vw, 46px); }
  .hero-centered .hero-lead { font-size: 15px; }
  .hero-centered .hero-scene { height: 342px; }
  .hero-collage .product-frame { top: 4px; left: 0; width: 100%; transform: none; }
  .hero-collage .floating-note { display: none; }
  .announcement a { gap: 7px; font-size: 13px; }
  .announcement strong { white-space: nowrap; }
  .slide-subtitle { display: none; }
}