:root {
  --ink: #213a32;
  --muted: #5f7168;
  --green: #165e52;
  --green-dark: #104b41;
  --paper: #f4f6f2;
  --surface: #ffffff;
  --line: #dce5dd;
  --soft: #eaf1eb;
  --sprout: #c6e79b;
  --amber: #795c32;
  --amber-bg: #f8f2e8;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  scroll-behavior: smooth;
  scroll-padding-top: 108px;
}
* { box-sizing: border-box; }
body { margin: 0; font-size: 16px; line-height: 1.75; }
a { color: inherit; text-underline-offset: 5px; }
button { font: inherit; color: inherit; cursor: pointer; }
button[hidden] { display: none; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { line-height: 1.35; font-weight: 650; }
p { color: var(--muted); }
button, a, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--green); outline-offset: 5px; }
::selection { background: var(--sprout); color: var(--ink); }
.shell { width: min(1120px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 20; background: white; padding: 12px 20px; }
.skip-link:focus { top: 10px; }
.site-header { position: sticky; top: 0; z-index: 10; background: var(--paper); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 24px; min-height: 84px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; white-space: nowrap; font-weight: 650; font-size: 20px; letter-spacing: -.5px; }
.brand img { flex-shrink: 0; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 29px; font-size: 14px; }
.site-nav a { text-decoration: none; color: var(--muted); padding-block: 12px; white-space: nowrap; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--green); }
.site-nav a[aria-current="page"] { text-decoration: underline; }
.header-contact { font-size: 14px; padding-left: 23px; border-left: 1px solid #c6d3c8; margin-left: 9px; text-decoration: none; white-space: nowrap; }
.header-contact span { margin-left: 7px; }
.menu-toggle { display: none; }
.hero { display: grid; grid-template-columns: 1.08fr 1fr; gap: 40px; align-items: center; padding-top: 66px; padding-bottom: 56px; }
.hero > * { min-width: 0; }
.platform-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--green); background: var(--soft); border: 1px solid var(--line); border-radius: 7px; padding: 5px 11px; }
.platform-tag svg { width: 17px; height: 17px; }
h1 { font-size: clamp(42px, 4.4vw, 60px); line-height: 1.24; letter-spacing: -2px; margin: 24px 0; }
.hero-description { font-size: 17px; line-height: 1.95; }
.hero-actions { display: flex; align-items: center; gap: 25px; margin-top: 30px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 22px; min-height: 52px; padding: 12px 22px; border-radius: 12px; text-decoration: none; font-size: 15px; font-weight: 600; }
.primary { color: white; background: var(--green); }
.primary:hover { background: var(--green-dark); }
.text-link { font-size: 14px; color: var(--green); font-weight: 550; text-decoration-thickness: 1px; }
.text-link span { margin-left: 10px; }
.release-note { display: flex; align-items: center; gap: 8px; margin-top: 23px; font-size: 12px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: #8a794b; flex-shrink: 0; }
.product-figure { position: relative; padding: 12px 30px 0; display: flex; align-items: center; flex-direction: column; isolation: isolate; }
.space-outline { position: absolute; z-index: -1; width: 225px; height: 270px; border: 22px solid #e3ebdf; border-radius: 46px; }
.outline-one { left: 0; top: 50px; border-right-color: transparent; }
.outline-two { right: 0; bottom: 60px; border-color: #d3e1cb; border-left-color: transparent; }
.phone-preview { position: relative; width: 302px; max-width: 100%; background: var(--paper); border: 6px solid #294b40; border-radius: 38px; padding: 10px 16px 15px; box-shadow: 0 18px 32px -22px #254a3b55; }
.phone-status { display: flex; justify-content: space-between; align-items: center; font-size: 10px; font-weight: 650; padding: 0 5px 18px; }
.phone-status span:last-child { letter-spacing: 2px; font-size: 8px; }
.phone-heading { display: flex; justify-content: space-between; align-items: center; margin: 0 0 20px; }
.phone-greeting { display: block; font-size: 10px; color: var(--muted); margin-bottom: 3px; }
.phone-heading strong { font-size: 25px; letter-spacing: -1px; }
.settings-glyph { font-size: 23px; color: var(--green); }
.preview-clone { border: 1px solid var(--line); border-radius: 19px; padding: 15px 13px 12px; background: white; margin-bottom: 12px; }
.clone-title { display: flex; align-items: center; gap: 10px; }
.sample-app { width: 40px; height: 40px; border-radius: 12px; padding: 9px; background: var(--soft); }
.sample-app svg { fill: none; stroke: var(--green); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.sample-app.work { background: #f1eddf; }
.sample-app.work svg { stroke: #806b44; }
.clone-title strong { display: block; font-size: 15px; line-height: 1.4; }
.clone-title div > span { display: block; font-size: 10px; color: var(--muted); margin-top: 4px; }
.clone-more { margin-left: auto; font-size: 20px; color: var(--muted); }
.preview-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 16px; font-size: 11px; text-align: center; }
.preview-actions > span { border: 1px solid var(--line); border-radius: 8px; padding: 7px 0; color: var(--green); }
.preview-actions .preview-open { background: var(--green); color: white; border-color: var(--green); }
.preview-add { margin: 27px 0 18px; border-radius: 11px; padding: 11px 5px; text-align: center; color: var(--green); background: #e0ebda; font-size: 12px; font-weight: 550; }
.preview-add span { margin-right: 6px; }
.phone-home { width: 78px; height: 3px; margin: 0 auto; background: #334b41; border-radius: 5px; }
.product-figure figcaption { font-size: 11px; color: var(--muted); margin-top: 18px; text-align: center; }
.principles-strip { background: var(--soft); border-block: 1px solid var(--line); }
.principles-inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; min-height: 76px; font-size: 14px; }
.principles-inner > span { display: flex; align-items: center; gap: 12px; }
.principles-inner > span > span { color: var(--green); font-size: 22px; }
.section { padding-top: 88px; padding-bottom: 88px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; margin-bottom: 48px; }
h2 { font-size: 34px; letter-spacing: -.8px; }
.section-heading p { font-size: 15px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 37px; }
.feature { border-top: 1px solid #bccdc1; padding-top: 25px; }
.feature-symbol { display: inline-flex; margin-bottom: 21px; }
.feature-symbol svg { width: 32px; height: 32px; fill: none; stroke: var(--green); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.feature h3 { font-size: 19px; margin-bottom: 12px; }
.feature p { font-size: 14px; line-height: 1.95; }
.local-data-note { display: flex; align-items: center; gap: 19px; margin-top: 48px; padding: 25px 28px; background: #e9efE5; border-radius: 16px; }
.note-mark { width: 35px; flex-shrink: 0; }
.note-mark svg { width: 35px; fill: none; stroke: var(--green); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.local-data-note h3 { font-size: 17px; margin-bottom: 5px; }
.local-data-note p { font-size: 13px; max-width: 580px; }
.local-data-note a { margin-left: auto; flex-shrink: 0; }
.guide-section { background: white; border-block: 1px solid var(--line); padding-block: 80px; }
.guide-layout { display: grid; grid-template-columns: 1fr 1.13fr; gap: 100px; }
.section-kicker { font-size: 13px; color: var(--green); margin-bottom: 16px; }
.guide-intro { margin-top: 22px; margin-bottom: 22px; font-size: 15px; }
.steps { list-style: none; counter-reset: steps; padding: 0; margin: 0; }
.steps li { counter-increment: steps; position: relative; display: flex; align-items: flex-start; gap: 23px; padding-bottom: 36px; }
.steps li::before { content: counter(steps); display: grid; place-items: center; background: var(--soft); color: var(--green); width: 38px; height: 38px; flex-shrink: 0; border-radius: 12px; font-size: 15px; font-weight: 650; z-index: 1; }
.steps li::after { content: ""; position: absolute; left: 19px; top: 38px; bottom: 0; width: 1px; background: var(--line); }
.steps li:last-child { padding-bottom: 0; }
.steps li:last-child::after { content: none; }
.steps h3 { font-size: 18px; margin: 4px 0 10px; }
.steps p { font-size: 14px; }
.compatibility { display: grid; grid-template-columns: 1fr 1.15fr; gap: 100px; }
.experiment-tag { color: var(--amber); background: var(--amber-bg); border-color: #e6dcc8; }
.compatibility h2 { margin: 20px 0; }
.compatibility-copy > p { font-size: 15px; }
.compatibility-details dl { margin: 0; }
.compatibility-details dl > div { padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.compatibility-details dt { font-size: 15px; font-weight: 650; margin-bottom: 7px; }
.compatibility-details dd { margin: 0; color: var(--muted); font-size: 14px; }
.compatibility-warning { color: var(--amber); font-size: 13px; line-height: 1.8; }
.faq-section { border-top: 1px solid var(--line); }
.faq-section .section-heading { margin-bottom: 32px; }
.faq-list { max-width: 900px; margin-left: auto; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; cursor: pointer; list-style: none; padding: 24px 38px 24px 0; font-weight: 550; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 2px; color: var(--green); font-size: 23px; top: 17px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { padding: 0 35px 25px 0; font-size: 14px; max-width: 740px; }
.faq-list a { color: var(--green); overflow-wrap: anywhere; }
.contact-section { display: flex; align-items: center; justify-content: space-between; gap: 30px; border-top: 1px solid var(--line); padding-block: 43px 58px; }
.contact-section h2 { font-size: 25px; margin-bottom: 10px; }
.contact-section p { font-size: 14px; }
.contact-section .button { flex-shrink: 0; }
.site-footer { background: var(--soft); border-top: 1px solid var(--line); padding: 32px 0 20px; }
.footer-main { display: flex; align-items: center; gap: 26px; padding-bottom: 27px; }
.footer-main .brand { font-size: 17px; }
.footer-main p { margin-right: auto; font-size: 12px; }
.footer-main > a:not(.brand) { font-size: 12px; text-decoration: none; color: var(--muted); overflow-wrap: anywhere; }
.footer-bottom { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); border-top: 1px solid #d4dfd3; padding-top: 18px; }

/* Policy: quiet reading surface with a persistent, independently usable contents list. */
.policy-heading { padding-top: 38px; padding-bottom: 44px; }
.back-link { font-size: 13px; text-decoration: none; color: var(--muted); }
.policy-heading h1 { font-size: 46px; margin: 28px 0 12px; letter-spacing: -1.5px; }
.policy-heading > p { font-size: 16px; }
.policy-meta { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 24px; font-size: 12px; color: var(--muted); }
.policy-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); align-items: start; gap: 57px; padding-bottom: 80px; }
.policy-sidebar { position: sticky; top: 116px; }
.policy-sidebar summary { font-size: 13px; font-weight: 650; cursor: pointer; padding: 0 0 13px; }
.policy-sidebar nav { display: grid; gap: 3px; border-left: 1px solid #becfc1; }
.policy-sidebar nav a { font-size: 12px; color: var(--muted); text-decoration: none; padding: 6px 0 6px 15px; }
.policy-sidebar nav a:hover { color: var(--green); text-decoration: underline; }
.print-button { border: 1px solid #bdcec1; background: transparent; font-size: 12px; margin-top: 24px; padding: 10px 13px; border-radius: 8px; }
.print-button span { margin-left: 10px; }
.policy-content { background: white; padding: 35px 38px 0; border: 1px solid var(--line); border-radius: 18px; min-width: 0; font-size: 14px; line-height: 1.95; }
.policy-content p { margin: 12px 0; color: #4f6258; overflow-wrap: anywhere; }
.policy-content a { color: var(--green); overflow-wrap: anywhere; }
.policy-content ul { padding-left: 1.4em; color: #4f6258; }
.policy-content li + li { margin-top: 9px; }
.policy-content strong { color: var(--ink); font-weight: 650; }
.policy-content h2 { font-size: 22px; letter-spacing: -.3px; margin-bottom: 18px; }
.policy-content h3 { font-size: 16px; margin-top: 25px; }
.policy-content section { border-top: 1px solid var(--line); padding-top: 32px; margin-top: 32px; scroll-margin-top: 105px; }
.policy-draft { background: var(--amber-bg); border-left: 3px solid #9b7f4c; padding: 14px 18px; font-size: 12px; border-radius: 0 8px 8px 0; }
.policy-draft strong { color: var(--amber); }
.policy-draft p { margin: 4px 0 0; color: #745e3c; }
.policy-summary { margin-top: 32px; }
.policy-summary h2 { font-size: 18px; }
.policy-content code { font-size: 11px; background: var(--soft); border-radius: 4px; padding: 2px 4px; overflow-wrap: anywhere; }
.data-list { display: grid; gap: 0; }
.data-list > div { border-bottom: 1px dashed var(--line); padding: 0 0 16px; }
.data-list > div:last-child { border-bottom: 0; padding-bottom: 0; }
.data-list h3 { margin-top: 17px; }
.data-list p { margin: 7px 0; }
.permission-table-wrap { overflow-x: auto; margin-block: 24px; border: 1px solid var(--line); border-radius: 9px; }
.permission-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 12px; line-height: 1.8; }
.permission-table caption { padding: 12px; font-weight: 550; background: #f7f9f5; text-align: left; caption-side: top; }
.permission-table thead { background: var(--soft); }
.permission-table th, .permission-table td { padding: 13px; border-top: 1px solid var(--line); vertical-align: top; }
.permission-table thead th { font-weight: 650; }
.permission-table tbody th { font-weight: 550; width: 27%; }
.permission-table td { color: #4f6258; width: 36.5%; }
.permission-table code { background: transparent; padding: 0; font-size: 10px; }
.policy-callout { background: var(--soft); border-radius: 10px; padding: 18px 20px; }
.policy-callout p { margin-bottom: 0; }
.policy-contact dl { margin: 20px 0; }
.policy-contact dl > div { display: grid; grid-template-columns: 90px 1fr; gap: 12px; margin-bottom: 8px; }
.policy-contact dt { color: var(--muted); }
.policy-contact dd { margin: 0; }
.policy-end { display: flex; justify-content: space-between; gap: 20px; padding: 28px 0; border-top: 1px solid var(--line); margin-top: 32px; font-size: 12px; }
@media (min-width: 1500px) {
  .hero { padding-block: 88px 70px; }
}
@media (max-width: 1040px) {
  .shell { width: calc(100% - 64px); }
  .site-nav { gap: 20px; }
  .header-contact { display: none; }
  .hero { gap: 20px; }
  h1 { font-size: 46px; }
  .hero-description { font-size: 15px; }
  .product-figure { padding-inline: 14px; }
  .space-outline { width: 150px; }
  .feature-grid { gap: 24px; }
  .guide-layout, .compatibility { gap: 55px; }
  .local-data-note { flex-wrap: wrap; }
  .local-data-note > div:nth-child(2) { flex: 1; }
  .local-data-note > a { margin-left: 54px; }
  .footer-main { flex-wrap: wrap; gap: 16px 25px; }
  .footer-main p { width: calc(100% - 180px); margin: 0; }
  .policy-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 28px; }
  .policy-content { padding-inline: 27px; }
}
@media (max-width: 760px) {
  :root { scroll-padding-top: 88px; }
  .shell { width: calc(100% - 40px); }
  .header-inner { min-height: 72px; flex-wrap: wrap; gap: 0; }
  .brand { font-size: 18px; }
  .brand img { width: 34px; height: 34px; }
  .site-nav { margin: 0; width: 100%; flex-wrap: wrap; justify-content: space-between; gap: 0 16px; padding: 8px 0 12px; }
  .nav-enhanced .site-nav { display: none; }
  .nav-enhanced .menu-toggle { display: inline-flex; gap: 8px; align-items: center; background: transparent; border: 1px solid #c2d1c5; border-radius: 8px; padding: 8px 12px; margin-left: auto; font-size: 13px; min-height: 42px; }
  .menu-toggle[aria-expanded="true"] + .site-nav { display: flex; }
  .site-nav a { font-size: 13px; }
  .hero { grid-template-columns: minmax(0, 1fr); padding-top: 43px; padding-bottom: 36px; gap: 40px; }
  .hero-copy { max-width: 480px; }
  h1 { font-size: clamp(37px, 8.5vw, 54px); line-height: 1.3; letter-spacing: -1.6px; margin: 20px 0; }
  .hero-description { font-size: 15px; }
  .hero-actions { gap: 22px; margin-top: 25px; }
  .button { font-size: 14px; padding-inline: 19px; gap: 16px; }
  .release-note { font-size: 11px; margin-top: 19px; }
  .product-figure { width: min(430px, 100%); justify-self: center; padding-inline: 20px; }
  .outline-one { left: 0; }
  .outline-two { right: 0; }
  .space-outline { width: 180px; }
  .principles-inner { min-height: 70px; gap: 10px; font-size: 11px; align-items: start; padding-block: 17px; }
  .principles-inner > span { flex: 1; flex-direction: column; gap: 4px; text-align: center; }
  .principles-inner > span > span { font-size: 20px; line-height: 1.3; }
  .section { padding-block: 53px; }
  h2 { font-size: 29px; }
  .section-heading { display: block; margin-bottom: 32px; }
  .section-heading p { margin-top: 17px; font-size: 14px; }
  .feature-grid { grid-template-columns: 1fr; gap: 25px; }
  .feature { padding-top: 22px; }
  .feature-symbol { margin-bottom: 12px; }
  .feature h3 { font-size: 19px; }
  .feature p { font-size: 14px; }
  .local-data-note { gap: 15px; padding: 23px 20px; margin-top: 32px; }
  .local-data-note > div:nth-child(2) { flex-basis: calc(100% - 50px); }
  .local-data-note h3 { font-size: 16px; }
  .local-data-note a { margin-left: 50px; }
  .local-data-note .text-link { font-size: 13px; }
  .guide-section { padding-block: 48px; }
  .guide-layout { grid-template-columns: 1fr; gap: 40px; }
  .guide-intro { font-size: 14px; margin-top: 18px; }
  .steps li { gap: 18px; }
  .compatibility { grid-template-columns: 1fr; gap: 32px; }
  .compatibility-copy p { font-size: 14px; }
  .faq-list summary { font-size: 15px; padding-block: 21px; }
  .faq-list details p { padding-right: 15px; }
  .contact-section { flex-direction: column; align-items: flex-start; padding-block: 32px 40px; gap: 22px; }
  .contact-section h2 { font-size: 24px; }
  .footer-main { align-items: flex-start; gap: 16px 25px; }
  .footer-main .brand { width: 100%; }
  .footer-main p { width: 100%; }
  .footer-bottom { gap: 15px; flex-wrap: wrap; }
  .policy-heading { padding-block: 25px 30px; }
  .policy-heading h1 { font-size: 36px; margin-top: 24px; }
  .policy-heading > p { font-size: 14px; }
  .policy-meta { gap: 5px; flex-direction: column; margin-top: 18px; font-size: 11px; }
  .policy-layout { grid-template-columns: 1fr; gap: 22px; padding-bottom: 40px; }
  .policy-sidebar { position: static; border-block: 1px solid var(--line); padding-block: 16px; }
  .policy-sidebar summary { padding-bottom: 4px; }
  .policy-sidebar nav { margin-top: 12px; grid-template-columns: 1fr 1fr; gap: 0; }
  .policy-sidebar nav a { padding: 7px 10px; }
  .print-button { margin-top: 16px; }
  .policy-content { padding: 23px 20px 0; font-size: 14px; border-radius: 14px; }
  .policy-content h2 { font-size: 20px; }
  .policy-content h3 { font-size: 16px; }
  .policy-content section { padding-top: 25px; margin-top: 25px; scroll-margin-top: 90px; }
  .policy-draft { padding: 12px; font-size: 12px; }
  .permission-table { min-width: 550px; }
  .policy-callout { padding: 16px; }
  .policy-contact dl > div { grid-template-columns: 65px minmax(0, 1fr); gap: 10px; }
  .policy-end { flex-wrap: wrap; gap: 16px; }
}
@media (max-width: 360px) {
  .hero-actions { gap: 16px; }
  .hero-actions .text-link { font-size: 12px; }
  .hero-actions .button { padding-inline: 15px; gap: 10px; }
  .desktop-break { display: none; }
  .product-figure { padding-inline: 0; }
  .phone-preview { padding-inline: 13px; }
  .policy-content { padding-inline: 15px; }
  .policy-sidebar nav { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
}
@media print {
  :root { color: black; background: white; scroll-behavior: auto; }
  .site-header, .site-footer, .policy-sidebar, .policy-end, .back-link, .skip-link { display: none; }
  .shell { width: 100%; }
  .policy-heading { padding: 0 0 20px; }
  .policy-heading h1 { margin-top: 0; }
  .policy-layout { display: block; padding: 0; }
  .policy-content { padding: 0; border: 0; }
  .policy-content section { scroll-margin: 0; }
  .policy-content h2, .policy-content h3 { break-after: avoid; }
  .permission-table-wrap { overflow: visible; }
  .permission-table { min-width: 0; }
  .permission-table tr { break-inside: avoid; }
  a { text-decoration: none; }
}