:root {
  color-scheme: light;
  --paper: #f3f4f7;
  --surface: #ffffff;
  --band: #e9edf0;
  --ink: #20252b;
  --muted: #626a74;
  --line: #d5dce2;
  --accent: #355f50;
  --blue: #355f7e;
  --error: #9a403b;
  --glass: rgba(255, 255, 255, .8);
  --motion: 240ms linear;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; letter-spacing: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.75 var(--sans); -webkit-font-smoothing: antialiased; overflow-wrap: break-word; }
body:has(dialog[open]) { overflow: hidden; }
main { min-height: 55svh; }
::selection { background: #d1e2d9; color: #172b22; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button, summary, a { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .5; }
button, input, textarea { min-width: 0; }
button { border: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
h1, h2, h3, p, figure, ol, ul, dl, dd { margin: 0; }
h1, h2, h3 { font-weight: 650; text-wrap: balance; }
h1 { font-size: 56px; line-height: 1.2; }
h2 { font-size: 36px; line-height: 1.35; }
h3 { font-size: 20px; line-height: 1.5; }
p { color: var(--muted); }
.icon { display: inline-block; width: 20px; height: 20px; flex: 0 0 20px; vertical-align: middle; }
.wrap { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.section { padding-block: 96px; }
.band { width: 100%; background: var(--band); }
.band:not(:has(> .section)) { padding-block: 96px; }
.section-heading { max-width: 740px; margin-bottom: 44px; }
.section-heading h2 { margin-top: 12px; }
.section-heading > p:not(.eyebrow) { margin-top: 18px; max-width: 650px; }
.eyebrow { color: var(--accent); font: 11px/1.6 var(--mono); }
.lead { font-size: 18px; line-height: 1.85; }
.muted, .caption, figcaption { color: var(--muted); }
.caption, figcaption { margin-top: 16px; font-size: 11px; text-align: center; }
.text-link { display: inline-flex; align-items: center; justify-content: flex-start; gap: 10px; min-height: 44px; color: var(--accent); font-size: 14px; font-weight: 550; }
.text-link .icon { width: 17px; height: 17px; flex-basis: 17px; }
.text-link:hover { color: var(--ink); }
.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 48px; max-width: 100%; padding: 12px 21px; border: 1px solid transparent; border-radius: 6px; font-size: 14px; font-weight: 550; line-height: 1.5; text-align: center; transition: background var(--motion), color var(--motion), border-color var(--motion), box-shadow var(--motion), transform var(--motion); }
.button.primary { background: var(--ink); color: #fff; }
.button.primary:hover { background: #36453d; box-shadow: 0 4px 14px #20252b1a; }
.button.secondary { background: transparent; border-color: #bfc8cf; color: var(--ink); }
.button.secondary:hover { background: #ffffffa6; border-color: #85968b; }
.button:active { transform: translateY(1px); }
.icon-button { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 42px; width: 42px; height: 42px; border-radius: 6px; background: transparent; transition: background var(--motion), color var(--motion), transform var(--motion); }
.icon-button:hover { background: #e7ece9; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 20px; top: 14px; z-index: 200; padding: 12px 18px; border-radius: 6px; background: var(--ink); color: #fff; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }

/* The glass material is limited to navigation and modal surfaces. */
.site-nav { position: sticky; z-index: 100; top: 12px; width: min(1280px, calc(100% - 48px)); margin: 12px auto 0; border: 1px solid #ffffffdb; border-radius: 40px; background: var(--glass); box-shadow: 0 2px 8px #2b354608, 0 12px 32px #2b354606; -webkit-backdrop-filter: blur(18px) saturate(1.12); backdrop-filter: blur(18px) saturate(1.12); transition: background var(--motion), box-shadow var(--motion), border-color var(--motion); }
.is-scrolled .site-nav { background: rgba(255, 255, 255, .92); border-color: #dce2e7; box-shadow: 0 8px 28px #2b354611; }
.nav-inner { display: flex; align-items: center; min-height: 64px; padding: 8px 16px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; min-width: 0; font-size: 16px; font-weight: 650; line-height: 1.4; }
.brand img { width: 30px; height: 30px; flex: 0 0 30px; object-fit: contain; }
.brand span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.desktop-nav { display: flex; align-items: center; justify-content: center; gap: 22px; margin-inline: auto; white-space: nowrap; }
.desktop-nav > a { position: relative; display: inline-flex; align-items: center; min-height: 44px; font-size: 13px; color: #535b65; transition: color var(--motion); }
.desktop-nav > a:hover, .desktop-nav > a[aria-current="page"] { color: var(--ink); }
.desktop-nav > a::after { position: absolute; content: ""; left: 0; right: 0; bottom: 4px; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform var(--motion); }
.desktop-nav > a[aria-current="page"]::after { transform: scaleX(1); }
.nav-tools { display: flex; align-items: center; justify-content: flex-end; gap: 10px; min-width: 0; }
.nav-tools > [data-balance-wrap] { max-width: 90px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font-size: 11px; }
.nav-tools > [data-balance-wrap] b { color: var(--accent); font-variant-numeric: tabular-nums; }
.user-id-chip { max-width: 92px; min-height: 36px; padding: 6px 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); background: #edf0f2; border-radius: 4px; font: 10px/1.5 var(--mono); transition: background var(--motion), color var(--motion); }
.user-id-chip:hover, .user-id-chip.copied { background: #dce9e1; color: var(--accent); }
.login-button { min-height: 40px; padding: 7px 11px; border-radius: 5px; background: transparent; font-size: 13px; line-height: 1.4; white-space: nowrap; transition: background var(--motion); }
.login-button:hover { background: #e6ece8; }
.language-switch, .nav-download { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 40px; border-radius: 6px; padding: 7px 10px; font-size: 12px; line-height: 1.4; white-space: nowrap; transition: background var(--motion), color var(--motion); }
.language-switch .icon, .nav-download .icon { width: 16px; height: 16px; flex-basis: 16px; }
.language-switch { color: #535b65; }
.language-switch:hover { background: #e6ece8; }
.nav-download { background: var(--ink); color: #fff; }
.nav-download:hover { background: #365245; }
.mobile-menu-toggle, .mobile-nav { display: none; }
.auth-status { position: absolute; top: calc(100% + 8px); right: 8px; max-width: min(420px, calc(100% - 16px)); padding: 12px 16px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--ink); font-size: 12px; box-shadow: 0 10px 24px #20252b14; }
.auth-status:empty { display: none; }
.menu-open .auth-status { display: none; }

/* The original product image remains an uncropped, full-width composition. */
.hero { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; position: relative; isolation: isolate; height: calc(100svh - 128px); min-height: 600px; max-height: 880px; padding-top: 30px; overflow: hidden; background: #eef0f3; }
.hero-copy { position: relative; z-index: 2; display: grid; justify-items: center; gap: 13px; width: min(800px, calc(100% - 40px)); margin-inline: auto; text-align: center; }
.hero h1 { color: #252b31; font-size: 98px; font-weight: 650; line-height: 1.08; }
.hero-tagline { color: var(--ink); font-size: 28px; font-weight: 550; line-height: 1.5; text-wrap: balance; }
.hero-lede { max-width: 560px; font-size: 15px; line-height: 1.8; }
.hero .actions { margin-top: 5px; }
.hero-art { display: flex; align-items: flex-end; justify-content: center; min-width: 0; min-height: 0; width: 100%; margin-top: 12px; }
.hero-art picture { display: flex; align-items: flex-end; justify-content: center; width: 100%; height: 100%; min-height: 0; }
.hero-art img { width: min(1600px, 100%); height: 100%; min-height: 0; object-fit: contain; object-position: center bottom; }
.hero-caption { color: var(--muted); text-align: center; font-size: 10px; padding: 6px 18px 10px; }
.hero + .section { padding-top: 24px; }
.page-head { padding-top: 88px; padding-bottom: 28px; }
.page-head h1 { max-width: 870px; margin-top: 16px; }
.page-head .lead { max-width: 720px; margin-top: 22px; }
.page-head .lead:empty { display: none; }
.page-head + .section { padding-top: 40px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 44px; }
.feature { min-width: 0; padding-top: 25px; border-top: 1px solid var(--line); }
.feature > .icon { width: 25px; height: 25px; color: var(--accent); }
.feature:nth-child(2) > .icon { color: var(--blue); }
.feature:nth-child(3) > .icon { color: #7a5b62; }
.feature h3 { margin: 22px 0 12px; }
.feature p { font-size: 14px; }
.editorial { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); align-items: center; gap: 100px; }
.editorial h2 { margin-top: 16px; max-width: 500px; }
.editorial .lead { margin-top: 22px; }
.check-list { display: grid; gap: 13px; list-style: none; padding: 0; margin: 28px 0; }
.check-list li { display: flex; align-items: flex-start; gap: 11px; color: #515c65; font-size: 14px; }
.check-list .icon { width: 17px; height: 17px; flex-basis: 17px; margin-top: 4px; color: var(--accent); }
.single-screen { justify-self: center; width: min(100%, 260px); }
.single-screen img { width: 100%; height: auto; aspect-ratio: 390 / 844; object-fit: contain; border-radius: 8px; box-shadow: 0 18px 44px #2634431c; }
.roadmap { background: #edf0ef; }
.roadmap .section-heading { max-width: 760px; }
.roadmap-list, .workflow-list, .principles { list-style: none; padding: 0; }
.roadmap-list li { display: grid; grid-template-columns: 60px minmax(0, 1fr) auto; align-items: start; gap: 20px; padding: 28px 0; border-top: 1px solid #ced8d2; }
.roadmap-list p { margin-top: 8px; font-size: 14px; }
.step-number { color: #53675b; font: 12px/1.8 var(--mono); }
.status, .original-badge { display: inline-flex; align-items: center; min-height: 24px; padding: 3px 7px; background: #e0e7e3; border-radius: 3px; color: #4d6657; font-size: 10px; line-height: 1.6; }
.roadmap-list .status { margin-top: 2px; }
.section-title-row { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 30px; }
.section-title-row h2 { margin-top: 12px; }
.section-title-row .text-link { flex-shrink: 0; }
.product-showcase { padding-top: 24px; }
.screen-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 260px)); justify-content: center; align-items: start; gap: 38px; padding-block: 20px; }
.screen-strip img { width: 100%; height: auto; aspect-ratio: 390 / 844; object-fit: contain; border: 1px solid #d9dfe4; border-radius: 8px; box-shadow: 0 14px 32px #26344312; }
.workflow-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 38px; }
.workflow-list li { min-width: 0; padding-top: 23px; border-top: 1px solid var(--line); }
.workflow-list h3 { margin: 17px 0 12px; }
.workflow-list p { font-size: 14px; }
.detail-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 50px; }
.detail-list > div { display: grid; grid-template-columns: 135px minmax(0, 1fr); gap: 18px; padding: 25px 0; border-top: 1px solid #cfd6dd; }
.detail-list dt { font-size: 15px; font-weight: 600; }
.detail-list dd { color: var(--muted); font-size: 14px; }
.notice { display: flex; align-items: flex-start; gap: 12px; margin-block: 28px; padding: 16px 20px; border-left: 2px solid #819786; background: #ffffff80; color: #626d65; font-size: 13px; line-height: 1.85; }
.notice > .icon { width: 18px; height: 18px; flex-basis: 18px; margin-top: 3px; }
.end-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; text-align: center; }
.end-cta h2 { width: 100%; margin-bottom: 20px; }
.philosophy-mark { display: flex; justify-content: center; padding-top: 52px; padding-bottom: 8px; }
.philosophy-mark img { width: 190px; height: auto; aspect-ratio: 1253 / 1222; object-fit: contain; }
.principles { display: grid; gap: 64px; }
.principles li { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 30px; padding-top: 36px; border-top: 1px solid var(--line); }
.principles li > div { max-width: 720px; }
.principles .lead { margin-top: 20px; }
.download-section { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 38px; max-width: 880px; }
.download-symbol { display: grid; place-items: center; width: 78px; height: 78px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.download-symbol .icon { width: 34px; height: 34px; color: var(--accent); }
.download-section h2 { margin-top: 14px; }
.download-section .lead { margin-top: 20px; }
.download-section .actions { justify-content: flex-start; margin-top: 28px; }
.download-section code { padding: 3px 6px; background: #e3e9e5; border-radius: 3px; font-family: var(--mono); }
.platform-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; }
.platform-list > div { min-width: 0; border-top: 1px solid #cfd6dd; padding-top: 26px; }
.platform-list > div > .icon { color: var(--accent); width: 24px; height: 24px; }
.platform-list h3 { margin: 18px 0 10px; font-size: 18px; }
.platform-list p { font-size: 13px; }
.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 44px 60px; }
.guide-grid article { padding-top: 24px; border-top: 1px solid var(--line); }
.guide-grid h3 { margin: 14px 0 12px; }
.guide-grid p { font-size: 14px; }
.faq { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 72px; align-items: start; }
.faq details { border-bottom: 1px solid #cbd4dc; }
.faq details:first-child { border-top: 1px solid #cbd4dc; }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; list-style: none; cursor: pointer; padding: 22px 0; font-size: 15px; font-weight: 550; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .icon { width: 17px; height: 17px; flex-basis: 17px; color: var(--muted); transition: transform var(--motion); }
.faq details[open] summary .icon { transform: rotate(45deg); }
.faq details > p { padding: 0 26px 24px 0; font-size: 14px; animation: content-enter var(--motion); }

.chat-shell { width: min(100%, 800px); margin-inline: auto; border: 1px solid #d3dbe0; border-radius: 8px; background: var(--surface); box-shadow: 0 6px 26px #26344308; overflow: hidden; }
.chat-head { display: flex; align-items: center; gap: 10px; padding: 19px 24px; border-bottom: 1px solid #e8ecef; }
.chat-head .icon { color: var(--accent); }
.chat-head strong { font-size: 14px; font-weight: 600; }
.chat-log { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; height: 324px; overflow-y: auto; overscroll-behavior: contain; padding: 24px; scrollbar-gutter: stable; }
.message { max-width: 86%; border-radius: 7px; padding: 13px 16px; color: #424c55; font-size: 14px; line-height: 1.85; white-space: pre-wrap; overflow-wrap: anywhere; animation: content-enter var(--motion); }
.message.assistant { background: #f0f3f5; }
.message.user { align-self: flex-end; background: #e2ece6; color: #365346; }
.message.is-error { background: #f6e8e6; color: var(--error); }
#chatForm { display: grid; grid-template-columns: minmax(0, 1fr) 42px; align-items: center; gap: 12px; padding: 12px 16px; border-top: 1px solid #e2e7eb; }
#chatInput { width: 100%; height: 44px; border: 0; background: transparent; font-size: 14px; padding: 8px; outline-offset: 0; }
#chatForm .icon-button { background: var(--ink); color: #fff; }
#chatForm .icon-button:hover { background: #365245; }
.ai-page { max-width: 850px; padding-bottom: 96px; }
.ai-page .notice { margin-top: 12px; margin-bottom: 30px; background: #e9efeb; }
.ai-page .chat-log { height: min(48svh, 480px); min-height: 250px; }
.contact-section { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: start; gap: 80px; }
.contact-section .section-heading { margin-bottom: 0; }
.contact-section .section-heading .text-link { margin-top: 22px; overflow-wrap: anywhere; }
.message-form { display: grid; gap: 12px; min-width: 0; }
.message-form label { color: #515b65; font-size: 13px; font-weight: 550; }
.message-form textarea, .message-form input { width: 100%; border: 1px solid #c5cfd8; border-radius: 6px; background: #ffffffb3; padding: 13px 15px; font-size: 14px; line-height: 1.75; transition: border-color var(--motion), background var(--motion), box-shadow var(--motion); }
.message-form textarea { min-height: 172px; resize: vertical; }
.message-form input { min-height: 48px; }
.message-form textarea:focus, .message-form input:focus { background: #fff; border-color: #6c8c7a; box-shadow: 0 0 0 3px #6c8c7a12; outline: none; }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 1; }
.message-form .button { justify-self: start; margin-top: 6px; min-width: 140px; }
.form-note { font-size: 11px; line-height: 1.85; color: var(--muted); }
.form-status { min-height: 26px; color: var(--accent); font-size: 13px; }
.form-status.is-error, .auth-status.is-error { color: var(--error); }
.journal-list { min-height: 120px; }
.journal-item { display: grid; grid-template-columns: 130px minmax(0, 1fr) auto; align-items: start; gap: 30px; padding: 30px 0; border-top: 1px solid var(--line); }
.journal-item time { color: var(--muted); font: 11px/1.8 var(--mono); padding-top: 5px; }
.journal-copy { min-width: 0; }
.journal-copy h3 { font-size: 19px; }
.journal-copy p { margin-top: 11px; max-width: 640px; font-size: 13px; line-height: 1.85; }
.journal-copy .original-badge { margin-top: 12px; }
.journal-read { min-height: 42px; padding: 7px 0 7px 14px; background: transparent; color: var(--accent); font-size: 12px; font-weight: 550; white-space: nowrap; transition: color var(--motion); }
.journal-read:hover { color: var(--ink); }
.load-state { display: grid; justify-items: start; gap: 8px; padding-block: 24px; }
.load-state p { font-size: 14px; }
.retry-button { padding: 0; border: 0; background: transparent; }
.content-language-note { display: block; color: var(--muted); font-size: 11px; line-height: 1.85; margin-bottom: 20px; }
.message .content-language-note { margin: 10px 0 0; }
.original-badge { color: #586d7e; background: #e5edf3; font-weight: 400; }

dialog { width: min(820px, calc(100% - 40px)); max-width: none; max-height: min(86svh, 1000px); margin: auto; padding: 24px 44px 44px; border: 1px solid #ffffffd9; border-radius: 8px; background: rgba(255, 255, 255, .94); color: var(--ink); box-shadow: 0 24px 90px #26344333; -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); overscroll-behavior: contain; }
dialog::backdrop { background: rgba(36, 46, 56, .24); }
dialog[open] { animation: modal-enter var(--motion); }
dialog[open]::backdrop { animation: backdrop-enter var(--motion); }
.dialog-close { display: flex; position: sticky; top: 0; margin: 0 0 6px auto; background: #eef1f3; z-index: 1; }
.article-body .eyebrow { margin-bottom: 14px; }
.article-body h1 { font-size: 32px; line-height: 1.5; font-weight: 650; }
.article-date { margin: 20px 0 28px; color: var(--muted); font: 11px/1.8 var(--mono); }
.article-cover { width: 100%; height: auto; max-height: 420px; object-fit: contain; margin-bottom: 26px; }
.article-content { white-space: pre-wrap; overflow-wrap: anywhere; color: #505b65; font-size: 15px; line-height: 1.95; }
.plan-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-bottom: 24px; }
.plan { min-width: 0; min-height: 220px; padding: 24px; background: #fff; border: 1px solid #dce2e8; border-radius: 8px; }
.plan:nth-child(3n + 2) { border-top: 3px solid #b5c9da; padding-top: 22px; }
.plan:nth-child(3n) { border-top: 3px solid #c8c2d2; padding-top: 22px; }
.plan:nth-child(3n + 1) { border-top: 3px solid #b8ccbf; padding-top: 22px; }
.plan h2 { margin: 28px 0 12px; font-size: 23px; line-height: 1.45; }
.plan p { font-size: 13px; }
.thanks-wall { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.thanks-wall > .content-language-note, .thanks-wall > .load-state, .thanks-wall > .muted { grid-column: 1 / -1; }
.thanks-entry { display: flex; flex-direction: column; justify-content: flex-end; min-width: 0; min-height: 180px; border-radius: 8px; padding: 24px; background: #e1ebe3; transition: transform var(--motion), box-shadow var(--motion); }
.thanks-entry:nth-of-type(3n + 2) { background: #dce8f0; }
.thanks-entry:nth-of-type(3n) { background: #eae2ed; }
.thanks-entry:nth-of-type(4n) { background: #f1e6df; }
.thanks-entry h2 { font-size: 23px; line-height: 1.5; }
.thanks-entry p { font-size: 12px; margin-top: 10px; color: #53675b; }
.thanks-entry:hover { transform: translateY(-3px); box-shadow: 0 9px 20px #2634430c; }
.legal { max-width: 840px; padding-top: 28px; padding-bottom: 100px; font-size: 15px; }
.legal-meta { border-bottom: 1px solid var(--line); padding-bottom: 26px; color: var(--muted); font-size: 12px; }
.legal h2 { margin: 44px 0 16px; font-size: 23px; line-height: 1.6; }
.legal h3 { margin: 26px 0 12px; color: #52635b; font-size: 17px; }
.legal p { margin-top: 15px; line-height: 1.95; }
.legal a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; overflow-wrap: anywhere; }
.legal table { width: 100%; border-collapse: collapse; table-layout: fixed; margin: 20px 0 28px; color: #626b74; font-size: 12px; line-height: 1.9; }
.legal th, .legal td { text-align: left; vertical-align: top; padding: 13px 12px; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.legal th { color: #34483d; background: #e9eeeb; font-weight: 550; }
.legal blockquote { margin: 22px 0; padding: 15px 18px; border-left: 2px solid #8aa08f; background: #e9efeb; color: #52665b; font-size: 14px; }
.translation-note { border-left: 2px solid #b5c9da; padding-left: 15px; color: var(--muted); font-size: 12px; }
.site-footer { display: grid; grid-template-columns: 1fr 1.3fr; column-gap: 90px; padding-top: 48px; padding-bottom: 28px; border-top: 1px solid var(--line); }
.footer-brand .brand { font-size: 19px; }
.footer-brand p { max-width: 270px; margin-top: 16px; font-size: 12px; }
.site-footer > nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px 24px; align-content: start; }
.site-footer nav a { color: var(--muted); font-size: 12px; transition: color var(--motion); }
.site-footer nav a:hover { color: var(--accent); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; grid-column: 1 / -1; margin-top: 48px; padding-top: 22px; border-top: 1px solid #e0e5e9; color: var(--muted); font-size: 10px; }
.noscript { margin-top: 20px; margin-bottom: 28px; font-size: 12px; }
[data-reveal], [data-scene] { opacity: 1; }
@keyframes content-enter { from { transform: translateY(8px); } to { transform: translateY(0); } }
@keyframes modal-enter { from { opacity: 0; transform: translateY(14px) scale(.99); } to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes backdrop-enter { from { opacity: 0; } to { opacity: 1; } }

@media (min-width: 1600px) {
  .hero { max-height: none; }
}
@media (max-width: 1240px) {
  .nav-inner { gap: 16px; }
  .desktop-nav { gap: 16px; }
  .nav-tools { gap: 5px; }
  .nav-download span { display: none; }
  .nav-download { width: 38px; padding: 8px; }
}
@media (max-width: 1160px) {
  .site-nav { width: calc(100% - 36px); }
  .nav-inner { display: grid; grid-template-columns: minmax(0, 1fr) auto 42px; gap: 10px; }
  .desktop-nav { display: none; }
  .mobile-menu-toggle { display: inline-flex; }
  .mobile-menu-toggle[aria-expanded="true"] { background: #dfe9e2; color: var(--accent); }
  .mobile-nav { display: grid; position: absolute; top: calc(100% + 10px); left: 0; right: 0; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; max-height: min(72svh, 540px); padding: 15px; overflow-y: auto; border: 1px solid #fff; border-radius: 16px; background: rgba(255, 255, 255, .97); box-shadow: 0 18px 36px #2634431c; -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-8px); transition: opacity var(--motion), transform var(--motion), visibility 0s linear 240ms; }
  .menu-open .mobile-nav { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); transition-delay: 0s; }
  .mobile-nav a { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-width: 0; min-height: 48px; padding: 10px 14px; border-radius: 6px; font-size: 13px; transition: background var(--motion), color var(--motion); }
  .mobile-nav a > .icon { width: 15px; height: 15px; flex-basis: 15px; color: #8c9a92; }
  .mobile-nav a:hover, .mobile-nav a[aria-current="page"] { background: #eaf0ec; color: var(--accent); }
  .editorial { gap: 64px; }
}
@media (max-width: 900px) {
  h1 { font-size: 46px; }
  h2 { font-size: 30px; }
  .section, .band:not(:has(> .section)) { padding-block: 72px; }
  .hero h1 { font-size: 86px; }
  .hero-tagline { font-size: 25px; }
  .feature-grid { gap: 24px; }
  .editorial { gap: 44px; grid-template-columns: minmax(0, 1fr) minmax(0, .72fr); }
  .editorial h2 { font-size: 28px; }
  .editorial .lead { font-size: 15px; }
  .single-screen { width: min(100%, 230px); }
  .contact-section { gap: 40px; }
  .contact-section h2 { font-size: 29px; }
  .screen-strip { gap: 22px; }
  .detail-list { gap: 0 30px; }
  .detail-list > div { grid-template-columns: 1fr; gap: 8px; }
  .faq { gap: 40px; }
  .journal-item { grid-template-columns: 100px minmax(0, 1fr) auto; gap: 20px; }
  .site-footer { column-gap: 44px; }
}
@media (max-width: 640px) {
  html { scroll-padding-top: 130px; }
  body:has(.nav-tools > [data-balance-wrap]:not([hidden])), body:has(.nav-tools > .user-id-chip:not([hidden])) { --mobile-auth-height: 28px; }
  body { font-size: 15px; }
  h1 { font-size: 34px; line-height: 1.35; }
  h2 { font-size: 27px; line-height: 1.5; }
  h3 { font-size: 18px; }
  .wrap { width: calc(100% - 36px); }
  .section, .band:not(:has(> .section)) { padding-block: 58px; }
  .section-heading { margin-bottom: 30px; }
  .section-heading > p:not(.eyebrow) { margin-top: 15px; font-size: 14px; }
  .lead { font-size: 15px; }
  .site-nav { width: calc(100% - 24px); top: 8px; margin-top: 8px; border-radius: 27px; }
  .nav-inner { grid-template-columns: minmax(0, 1fr) auto 40px 38px; gap: 0 5px; min-height: 58px; padding: 8px 10px; }
  .brand { gap: 7px; font-size: 13px; }
  .brand img { width: 25px; height: 25px; flex-basis: 25px; }
  .nav-inner > .brand { grid-column: 1; grid-row: 1; }
  .nav-tools { display: contents; }
  .login-button { grid-column: 2; grid-row: 1; padding: 7px; font-size: 12px; }
  .language-switch { grid-column: 3; grid-row: 1; gap: 3px; padding: 7px; font-size: 10px; }
  .language-switch .icon { width: 14px; height: 14px; flex-basis: 14px; }
  .nav-inner > .mobile-menu-toggle { grid-column: 4; grid-row: 1; width: 38px; height: 38px; }
  .nav-download { display: none; }
  .nav-tools > [data-balance-wrap] { grid-column: 1; grid-row: 2; max-width: none; padding: 5px 0 0 4px; font-size: 10px; }
  .user-id-chip { grid-column: 2 / 5; grid-row: 2; justify-self: end; width: 100%; max-width: 170px; min-height: 24px; margin-top: 4px; padding: 4px 6px; font-size: 9px; }
  .mobile-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 10px; border-radius: 14px; }
  .mobile-nav a { font-size: 12px; min-height: 46px; padding: 9px 10px; }
  .hero { height: calc(100svh - 112px - var(--mobile-auth-height, 0px)); min-height: 0; max-height: 780px; padding-top: 28px; }
  .hero-copy { width: calc(100% - 36px); gap: 13px; }
  .hero .eyebrow { font-size: 9px; }
  .hero h1 { font-size: 76px; line-height: 1.12; }
  .hero-tagline { max-width: 350px; font-size: 22px; line-height: 1.6; }
  .hero-lede { max-width: 350px; font-size: 13px; line-height: 1.8; }
  .hero .actions { gap: 9px; margin-top: 3px; }
  .hero .button { min-height: 44px; padding: 10px 15px; font-size: 12px; gap: 8px; }
  .hero .button .icon { width: 17px; height: 17px; flex-basis: 17px; }
  .hero-art { margin-top: 18px; }
  .hero-art img { width: 100%; }
  .hero-caption { font-size: 9px; }
  .hero + .section { padding-top: 22px; }
  .page-head { padding-top: 58px; padding-bottom: 18px; }
  .page-head h1 { margin-top: 12px; }
  .page-head .lead { margin-top: 18px; }
  .page-head + .section { padding-top: 28px; }
  .feature-grid, .workflow-list, .platform-list, .guide-grid { grid-template-columns: 1fr; gap: 30px; }
  .feature { padding-top: 22px; }
  .feature h3 { margin: 15px 0 9px; }
  .feature p { font-size: 13px; }
  .editorial { grid-template-columns: 1fr; gap: 40px; }
  .editorial h2 { font-size: 27px; }
  .single-screen { width: 230px; }
  .check-list { margin-block: 24px; gap: 11px; }
  .check-list li { font-size: 13px; }
  .roadmap-list li { grid-template-columns: 28px minmax(0, 1fr); gap: 15px; padding-block: 24px; }
  .roadmap-list .status { grid-column: 2; justify-self: start; margin-top: -4px; }
  .roadmap-list h3 { font-size: 18px; }
  .roadmap-list p { font-size: 13px; }
  .section-title-row { gap: 15px; }
  .section-title-row .text-link { font-size: 12px; }
  .product-showcase { padding-top: 12px; }
  .screen-strip { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: min(72%, 250px); justify-content: start; gap: 18px; overflow-x: auto; padding: 14px 0 26px; scroll-snap-type: x mandatory; scrollbar-width: thin; }
  .screen-strip img { scroll-snap-align: start; }
  .detail-list { grid-template-columns: 1fr; }
  .detail-list > div { grid-template-columns: 96px minmax(0, 1fr); gap: 18px; padding-block: 22px; }
  .detail-list dt { font-size: 14px; }
  .detail-list dd { font-size: 13px; }
  .notice { padding: 14px 13px; gap: 9px; font-size: 12px; }
  .end-cta h2 { margin-bottom: 12px; }
  .philosophy-mark { padding-top: 30px; }
  .philosophy-mark img { width: 150px; }
  .principles { gap: 40px; }
  .principles li { grid-template-columns: 28px minmax(0, 1fr); gap: 16px; padding-top: 26px; }
  .principles h2 { font-size: 24px; }
  .principles .lead { margin-top: 14px; font-size: 14px; }
  .download-section { grid-template-columns: 1fr; gap: 24px; }
  .download-symbol { width: 64px; height: 64px; }
  .download-section h2 { font-size: 26px; }
  .platform-list h3 { margin-top: 12px; }
  .faq { grid-template-columns: 1fr; gap: 28px; }
  .faq summary { font-size: 14px; }
  .faq details > p { font-size: 13px; }
  .chat-head { padding: 16px 18px; }
  .chat-log { height: 310px; padding: 18px 14px; gap: 13px; }
  .message { padding: 12px; max-width: 93%; font-size: 13px; }
  #chatForm { padding: 10px; gap: 5px; }
  #chatInput { font-size: 13px; padding-inline: 4px; }
  .ai-page { padding-bottom: 64px; }
  .ai-page .chat-log { min-height: 260px; }
  .contact-section { grid-template-columns: 1fr; gap: 32px; }
  .contact-section h2 { font-size: 27px; }
  .message-form { gap: 10px; }
  .message-form input, .message-form textarea { font-size: 14px; padding: 12px 13px; }
  .message-form .button { width: 100%; }
  .journal-item { grid-template-columns: minmax(0, 1fr) auto; gap: 9px 15px; padding: 24px 0; }
  .journal-item time { grid-column: 1 / -1; padding-top: 0; font-size: 10px; }
  .journal-copy h3 { font-size: 17px; line-height: 1.65; }
  .journal-copy p { font-size: 12px; }
  .journal-read { font-size: 11px; padding-left: 0; }
  dialog { width: calc(100% - 24px); max-height: calc(100svh - 40px); padding: 14px 20px 28px; }
  .article-body h1 { font-size: 24px; line-height: 1.65; }
  .article-content { font-size: 14px; }
  .article-date { margin-block: 16px 22px; }
  .dialog-close { margin-bottom: 10px; }
  .plan-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .plan { min-height: 215px; padding: 18px 15px; }
  .plan:nth-child(n) { padding-top: 16px; }
  .plan h2 { font-size: 20px; margin-top: 25px; }
  .plan p { font-size: 12px; }
  .thanks-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .thanks-entry { padding: 18px 15px; min-height: 155px; }
  .thanks-entry h2 { font-size: 19px; }
  .thanks-entry p { font-size: 11px; }
  .legal { padding-top: 22px; padding-bottom: 64px; font-size: 14px; }
  .legal h2 { font-size: 20px; margin-top: 34px; }
  .legal h3 { font-size: 16px; }
  .legal-meta { font-size: 10px; }
  .legal table { font-size: 11px; }
  .legal td, .legal th { padding: 10px 6px; }
  .legal blockquote { font-size: 13px; padding: 13px; }
  .site-footer { grid-template-columns: 1fr; row-gap: 30px; padding-top: 38px; }
  .footer-brand .brand img { width: 30px; height: 30px; flex-basis: 30px; }
  .footer-brand p { max-width: none; margin-top: 12px; }
  .site-footer > nav { gap: 15px 12px; }
  .site-footer nav a { font-size: 11px; }
  .footer-bottom { grid-column: 1; margin-top: 0; font-size: 9px; }
}
@media (max-height: 760px) {
  .hero { min-height: 0; padding-top: 18px; }
  .hero-copy { gap: 10px; }
  .hero h1 { font-size: 76px; }
  .hero-tagline { font-size: 23px; }
  .hero-lede { font-size: 13px; }
}
@media (max-width: 640px) and (max-height: 680px) {
  .hero { height: calc(100svh - 108px - var(--mobile-auth-height, 0px)); padding-top: 15px; }
  .hero-copy { gap: 8px; }
  .hero h1 { font-size: 58px; line-height: 1.08; }
  .hero-tagline { font-size: 19px; line-height: 1.5; }
  .hero-lede { font-size: 12px; line-height: 1.75; }
  .hero .button { min-height: 40px; padding-block: 8px; }
  .hero-art { margin-top: 8px; }
  .hero-caption { padding-block: 4px 6px; font-size: 8px; }
}
@media (max-width: 359px) {
  .nav-inner { padding-inline: 8px; gap: 0 2px; }
  .brand { font-size: 12px; gap: 5px; }
  .brand img { width: 23px; height: 23px; flex-basis: 23px; }
  .login-button { font-size: 11px; padding-inline: 5px; }
  .language-switch { padding-inline: 4px; }
  .hero .button { padding-inline: 11px; font-size: 11px; }
  .hero .actions { gap: 8px; }
  .plan-grid { grid-template-columns: 1fr; }
  .plan { min-height: 180px; }
  .detail-list > div { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-height: 500px) and (min-width: 641px) {
  .hero { height: calc(100svh - 108px); min-height: 0; padding-top: 6px; }
  .hero-copy { width: calc(100% - 36px); gap: 5px; }
  .hero .eyebrow { font-size: 8px; }
  .hero h1 { font-size: 42px; line-height: 1.1; }
  .hero-tagline { font-size: 17px; line-height: 1.4; }
  .hero-lede { max-width: 720px; font-size: 11px; line-height: 1.5; }
  .hero .actions { gap: 8px; margin-top: 0; }
  .hero .button { min-height: 34px; padding: 6px 12px; font-size: 11px; }
  .hero .button .icon { width: 15px; height: 15px; flex-basis: 15px; }
  .hero-art { margin-top: 5px; }
  .hero-caption { padding-block: 3px; font-size: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  [data-reveal], [data-scene] { opacity: 1; transform: none; }
}
@media (prefers-contrast: more) {
  :root { --muted: #424a53; --line: #9da8b2; }
  .site-nav, .mobile-nav, dialog { background: #fff; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .button.secondary { border-color: #57645b; }
}
@media (forced-colors: active) {
  .site-nav, .mobile-nav, dialog { background: Canvas; border: 1px solid CanvasText; box-shadow: none; }
  .button, .icon-button, .status { border: 1px solid ButtonText; }
}