:root {
  --bg: #F5F9FC;
  --bg-panel: #FFFFFF;
  --bg-panel-2: #EDF3F7;
  --border: #DCE5EC;
  --accent: #45A35A;
  --accent-dark: #1C7A6E;
  --text: #2B3A4A;
  --text-muted: #66788A;
  --success: #3E9B55;
  --warn: #C98A1B;
  --error: #C8463D;
  --accent-tint: #E7F4EA;
  --accent-dark-tint: #E0EFED;
  --accent-hover: #3B9150;
  --accent-dark-hover: #16675D;
  --text-hover: #1F2C39;
  --line-soft: #BCCAD6;
  --ink-soft: #C9D6E0;
  --on-accent: #FFFFFF;
  --link: #16675D;
  --success-text: #246735;
  --warn-text: #79510B;
  --error-text: #9C3029;
  --warn-tint: #FBF2DF;
  --error-tint: #FBECEA;
  --veil: rgba(43, 58, 74, .25);
  --transparent: transparent;
  --font-display: "Inter","Noto Sans SC","PingFang SC","Hiragino Sans","Malgun Gothic","Microsoft YaHei",system-ui,sans-serif;
  --font-body: "Inter","Noto Sans SC","PingFang SC","Hiragino Sans","Malgun Gothic","Microsoft YaHei",system-ui,sans-serif;
  --font-mono: "JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --weight-normal: 400;
  --weight-medium: 500;
  --radius: 8px;
  --radius-sm: 6px;
  --radius-code: 4px;
  --radius-pill: 999px;
  --radius-round: 50%;
  --shadow-card: 0 1px 2px rgba(43,58,74,.05),0 12px 32px -10px rgba(43,58,74,.10);
  --shadow-card-hover: 0 1px 2px rgba(43,58,74,.06),0 18px 40px -12px rgba(43,58,74,.14);
  --shadow-nav: 0 1px 0 rgba(43,58,74,.04),0 4px 14px -8px rgba(43,58,74,.10);
  --shadow-btn: 0 1px 2px rgba(43,58,74,.10),0 6px 14px -6px rgba(69,163,90,.45);
  --nav-h: 64px;
  --wrap: 1180px;
  --reading: 820px;
  --gutter: 32px;
  --ease: 200ms ease;
  --reveal-time: 550ms;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 24px; }
html.nav-open { overflow: hidden; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font-body); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: .2em; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button, a { -webkit-tap-highlight-color: var(--transparent); }
img, svg, video { max-width: 100%; }
img { display: block; height: auto; }
svg { vertical-align: middle; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: var(--weight-normal); text-wrap: balance; overflow-wrap: break-word; }
h1 { font-size: clamp(34px, 1.2rem + 2.2vw, 48px); line-height: 1.18; letter-spacing: .01em; }
h2 { font-size: clamp(24px, 1rem + 1.2vw, 34px); line-height: 1.3; }
h3 { font-size: 26px; line-height: 1.35; }
strong, b { font-weight: var(--weight-medium); }
ul, ol { padding-inline-start: 1.5em; }
pre, code, kbd { font-family: var(--font-mono); }
code { font-size: .88em; overflow-wrap: anywhere; padding: 1px 6px; border-radius: var(--radius-code); background: var(--bg-panel-2); color: var(--text); }
pre { margin: 24px 0; padding: 24px; max-width: 100%; min-width: 0; overflow-x: auto; background: var(--bg-panel-2); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); font-size: 14px; line-height: 1.8; }
pre code { padding: 0; font-size: inherit; white-space: pre; overflow-wrap: normal; word-break: normal; background: var(--transparent); color: inherit; }
:focus-visible { outline: 2px solid var(--accent-dark); outline-offset: 3px; border-radius: var(--radius-sm); }
[hidden] { display: none !important; }
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.reading { max-width: var(--reading); }
.section { padding-top: 80px; padding-bottom: 80px; }
.section-head { margin-bottom: 40px; }
.section-head p { margin-top: 14px; color: var(--text-muted); }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.muted { color: var(--text-muted); }
.eyebrow { display: inline-block; font-size: 13px; letter-spacing: .12em; color: var(--accent-dark); margin-bottom: 12px; }
.vh { 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; top: 8px; left: var(--gutter); z-index: 100; transform: translateY(-160%); padding: 10px 18px; background: var(--bg-panel); color: var(--link); border-radius: var(--radius-sm); }
.skip-link:focus { transform: none; }
.grid-two { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.grid-two > *, .strip > *, .footer-grid > *, .device > *, .window-body > *, .point > * { min-width: 0; }
.card, .panel { min-width: 0; padding: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-card); }
.card h3, .panel h3 { margin-bottom: 12px; }
.card p, .panel p { color: var(--text-muted); }
.card > * + *, .panel > * + * { margin-top: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid var(--transparent); border-radius: var(--radius-sm); font-family: var(--font-body); font-weight: var(--weight-medium); line-height: 1.4; text-align: center; text-decoration: none; transition: background-color var(--ease),color var(--ease),transform var(--ease); }
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn-lg { min-height: 48px; padding: 10px 28px; font-size: 16px; }
.btn-md { min-height: 42px; min-width: 216px; padding: 9px 24px; font-size: 15px; }
.btn-primary { background: var(--accent); color: var(--on-accent); box-shadow: var(--shadow-btn); }
.btn-primary:hover, .btn-primary.is-hover { background: var(--accent-hover); color: var(--on-accent); }
.btn-ghost { background: var(--bg-panel); color: var(--accent-dark); border-color: var(--accent-dark); }
.btn-ghost:hover { background: var(--accent-dark-tint); color: var(--accent-dark); }
.btn-teal { background: var(--accent-dark); color: var(--on-accent); }
.btn-teal:hover { background: var(--accent-dark-hover); color: var(--on-accent); }
.btn-ink { background: var(--text); color: var(--on-accent); }
.btn-ink:hover { background: var(--text-hover); color: var(--on-accent); }
.btn:disabled, .btn[aria-disabled="true"] { background: var(--bg-panel-2); color: var(--text-muted); border-color: var(--border); box-shadow: none; cursor: not-allowed; transform: none; }
.btn:active, .btn.is-active { transform: translateY(1px); }
.btn.is-focus { outline: 2px solid var(--accent-dark); outline-offset: 3px; }
.btn-ico { width: 18px; height: 18px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.cta-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-bottom: 22px; }
.topbar { position: relative; z-index: 30; height: var(--nav-h); background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-nav); }
.header-shell { height: 100%; max-width: min(100%,calc(1280px + var(--gutter) * 2)); padding-inline: var(--gutter); margin-inline: auto; display: flex; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; margin-right: auto; color: var(--text); text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 32px; height: 32px; flex-shrink: 0; }
.brand-name { font-family: var(--font-display); font-size: 18px; font-weight: var(--weight-medium); letter-spacing: .01em; }
.brand-name b { color: var(--accent); }
.mainnav { min-width: 0; }
.mainnav ul { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 2px; }
.mainnav a { display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 8px 12px; border-radius: var(--radius-sm); font-size: 15px; color: var(--text-muted); white-space: nowrap; }
.mainnav a:hover { color: var(--accent-dark); text-decoration: none; }
.mainnav a[aria-current="page"] { color: var(--link); background: var(--accent-tint); }
.nav-ico { width: 16px; height: 16px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.dotfill { fill: currentColor; stroke: none; }
.header-tools { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.lang { position: relative; display: flex; align-items: center; padding-left: 20px; border-left: 1px solid var(--border); min-height: 28px; }
.lang-btn, .menu-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 6px 10px; border: 0; border-radius: var(--radius-sm); background: var(--transparent); color: var(--text-muted); font-size: 14px; }
.lang-btn:hover, .menu-toggle:hover { color: var(--accent-dark); }
.lang-short { display: none; }
.lang-menu { position: absolute; right: 0; top: calc(100% + 8px); min-width: 180px; padding: 8px; margin: 0; list-style: none; background: var(--bg-panel); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.lang-menu a { display: flex; align-items: center; min-height: 44px; padding: 8px 12px; color: var(--text); border-radius: var(--radius-sm); }
.lang-menu a:hover, .lang-menu [aria-current="true"] { background: var(--accent-tint); color: var(--link); text-decoration: none; }
.menu-toggle { display: none; min-width: 44px; }
.menu-toggle svg { width: 22px; height: 22px; }
.mobile-drawer { position: absolute; top: var(--nav-h); left: 0; right: 0; z-index: 32; max-height: calc(100dvh - var(--nav-h)); overflow-y: auto; overscroll-behavior: contain; padding: 16px var(--gutter) 24px; border-top: 1px solid var(--border); background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-card); }
.mobile-drawer ul { list-style: none; padding: 0; margin: 0; }
.mobile-drawer a { display: flex; align-items: center; gap: 12px; width: 100%; min-height: 46px; padding: 10px 14px; color: var(--text); border-radius: var(--radius-sm); }
.mobile-drawer a[aria-current], .mobile-drawer a:hover { background: var(--accent-tint); color: var(--link); text-decoration: none; }
.drawer-languages { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
.nav-veil { position: fixed; inset: var(--nav-h) 0 0; z-index: 20; padding: 0; border: 0; background: var(--veil); color: var(--text); }
.hero { min-height: calc(100vh - var(--nav-h) - 60px); min-height: calc(100svh - var(--nav-h) - 60px); display: grid; align-content: center; padding-top: 28px; padding-bottom: 36px; overflow-x: clip; }
.hero-inner { display: grid; justify-items: center; text-align: center; }
.badge { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 5px 14px 5px 12px; background: var(--bg-panel); color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--radius-pill); font-size: 13px; letter-spacing: .02em; margin-bottom: 20px; max-width: 100%; }
.badge-dot { width: 8px; height: 8px; flex-shrink: 0; border-radius: var(--radius-round); background: var(--accent); color: var(--text); box-shadow: 0 0 0 4px var(--accent-tint); }
.badge-sep { color: var(--line-soft); }
.hero h1 { margin-bottom: 14px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.h1-sep { color: var(--line-soft); padding-inline: .12em; }
.lede { max-width: 40em; font-size: 17px; line-height: 1.7; color: var(--text-muted); margin-bottom: 24px; }
.lede strong { color: var(--text); }
.platforms { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 26px; margin: 0 0 32px; padding: 0; list-style: none; }
.platforms a { display: inline-flex; align-items: center; gap: 7px; padding: 4px 2px; font-size: 14px; color: var(--text-muted); }
.platforms a:hover { color: var(--accent-dark); text-decoration: none; }
.platforms svg { width: 16px; height: 16px; flex-shrink: 0; }
.device { position: relative; isolation: isolate; width: 100%; max-width: 1080px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 32px; }
.device::before { content: ""; position: absolute; z-index: -1; inset: -140px -220px -120px; background: radial-gradient(closest-side,var(--bg-panel) 0%,var(--bg-panel) 22%,var(--bg) 100%); pointer-events: none; }
.route-card { display: flex; flex-direction: column; align-items: center; padding: 22px 32px 24px; background: linear-gradient(180deg,var(--bg-panel) 0%,var(--bg-panel) 48%,var(--bg-panel-2) 140%); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.route-card h2 { font-size: 22px; line-height: 1.2; margin-bottom: 8px; }
.route-card p { font-size: 14px; line-height: 1.6; color: var(--text-muted); margin-bottom: 18px; }
.route-art { display: block; width: 100%; max-width: 400px; height: auto; margin: 14px 0 12px; }
.pill { display: inline-block; max-width: 100%; padding: 3px 14px; border-radius: var(--radius-pill); font-size: 12px; font-weight: var(--weight-medium); letter-spacing: .08em; line-height: 18px; overflow-wrap: anywhere; }
.pill-green { background: var(--accent-tint); color: var(--link); }
.pill-gray { background: var(--bg-panel-2); color: var(--text); }
.text-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 12px; font-size: 14px; color: var(--text-muted); }
.text-link:hover { color: var(--link); }
.f-accent-tint { fill: var(--accent-tint); }
.f-neutral { fill: var(--bg-panel-2); }
.f-teal { fill: var(--accent-dark); }
.f-accent { fill: var(--accent); }
.f-panel { fill: var(--bg-panel); }
.f-ink-soft { fill: var(--ink-soft); }
.s-accent, .s-teal, .s-white { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.s-accent { stroke: var(--accent); }
.s-teal { stroke: var(--accent-dark); }
.s-white { stroke: var(--on-accent); stroke-width: 2.4; }
.dash-accent { fill: none; stroke: var(--accent); stroke-width: 2; stroke-dasharray: 4 6; stroke-linecap: round; }
.dash-gray { fill: none; stroke: var(--line-soft); stroke-width: 1.6; stroke-dasharray: 4 6; stroke-linecap: round; }
.svg-label { fill: var(--text-muted); font-family: var(--font-body); font-size: 13px; text-anchor: middle; }
.cat-line, .cat-open { stroke: var(--accent); stroke-linejoin: round; stroke-linecap: round; stroke-width: 2; }
.cat-line { fill: var(--bg-panel); }
.cat-open { fill: none; }
.cat-eye { fill: var(--accent-dark); stroke: none; }
.cat-nose { fill: var(--accent); stroke: none; }
.cat-whisk { fill: none; stroke: var(--text-muted); stroke-width: 1.4; stroke-linecap: round; opacity: .55; }
.flow-dot { fill: var(--accent); }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.prose { min-width: 0; }
.prose h2 { margin-top: 56px; margin-bottom: 20px; }
.prose h3 { margin-top: 32px; margin-bottom: 16px; }
.prose p, .prose ul, .prose ol { margin-top: 16px; margin-bottom: 16px; }
.prose p, .prose li { line-height: 1.85; }
.prose a { text-decoration: underline; text-underline-offset: .2em; overflow-wrap: anywhere; }
.prose li + li { margin-top: 8px; }
.prose :is(div,section,article) { min-width: 0; max-width: 100%; }
.site-footer { padding-top: 64px; padding-bottom: 28px; border-top: 1px solid var(--border); background: var(--bg-panel-2); color: var(--text); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr 1.2fr .7fr; gap: 40px; }
.footer-brand p { max-width: 26em; margin-top: 18px; font-size: 14px; color: var(--text-muted); }
.footer-heading { font-size: 15px; font-weight: var(--weight-medium); margin-bottom: 14px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li + li { margin-top: 8px; }
.footer-links a { color: var(--text-muted); font-size: 14px; overflow-wrap: anywhere; }
.footer-links a:hover { color: var(--link); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 13px; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-legal a { color: inherit; }
.reveal { opacity: 1; transform: none; }
.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(16px); }
.reveal-ready .reveal { transition: opacity var(--reveal-time) ease,transform var(--reveal-time) ease; }
@media (max-width: 1279px) {
  .mainnav { display: none; }
  .header-tools { margin-left: auto; }
  .menu-toggle { display: inline-flex; }
}
@media (min-width: 1280px) {
  .mobile-drawer, .nav-veil { display: none !important; }
}
@media (max-width: 900px) {
  .device { grid-template-columns: minmax(0,1fr); max-width: 560px; gap: 20px; }
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 768px) {
  h1, .hero h1 { font-size: clamp(24px,4.5vw,30px); }
  .grid-two { grid-template-columns: minmax(0,1fr); }
}
@media (max-width: 640px) {
  :root { --gutter: 18px; }
  .header-shell { gap: 8px; }
  .brand-name { font-size: 16px; }
  .lang { padding-left: 8px; }
  .lang-full { display: none; }
  .lang-short { display: inline; }
  .lang-btn { padding-inline: 6px; }
  .header-tools { gap: 2px; margin-left: auto; }
  .hero { padding-top: 28px; padding-bottom: 40px; }
  .lede { font-size: 15px; }
  .badge { gap: 7px; font-size: 11px; padding-inline: 10px; }
  .btn-lg { min-height: 46px; padding-inline: 22px; font-size: 15px; }
  .route-card { padding: 20px 18px 22px; }
  .route-card .btn-md { min-width: 0; width: 100%; }
  .platforms { gap: 6px 18px; }
  .section { padding-top: 48px; padding-bottom: 48px; }
  .card, .panel { padding: 22px; }
  .footer-grid { grid-template-columns: minmax(0,1fr); gap: 28px; }
  .tilt, [data-tilt] { transform: none !important; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
}
@media print {
  .header-tools, .mobile-drawer, .nav-veil { display: none !important; }
  .reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
}