/* aixx Inc. — design system (tokens first; every component below uses only tokens). */
:root{
  /* colour */
  --color-bg:#FFFFFF;--color-surface:#F9FAFB;--color-text:#1F2937;--color-text-2:#4B5563;--color-text-muted:#6B7280;
  --color-line:#E5E7EB;--color-accent:#2563EB;--color-accent-hover:#1D4ED8;--color-accent-soft:#EFF6FF;--color-on-accent:#FFFFFF;
  /* type */
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue","Segoe UI",Roboto,Inter,"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --fs-display:clamp(2.875rem,7.5vw,5.25rem);--fs-h1:clamp(2.25rem,5vw,3.25rem);--fs-h2:clamp(1.5rem,2.6vw,2rem);--fs-h2-prose:1.375rem;
  --fs-h3:1.125rem;--fs-lede:1.1875rem;--fs-body:17px;--fs-ui:.9375rem;--fs-small:.875rem;--fs-eyebrow:.8125rem;
  --lh-body:1.6;--lh-tight:1.15;--track-tight:-.02em;--track-eyebrow:.08em;
  /* space */
  --space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;
  --section-y:clamp(48px,7vw,80px);--hero-top:clamp(72px,12vw,128px);--gutter:20px;--max:1120px;
  /* shape & size */
  --radius-sm:8px;--radius-md:12px;--radius-lg:22px;--radius-pill:999px;
  --btn-h:44px;--control-h:36px;--tap:44px;--header-h:60px;--icon-product:88px;--icon-hero:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font);font-size:var(--fs-body);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
html[lang^="zh"] body{line-height:1.75;letter-spacing:.01em}
html[lang="ja"] body{font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic UI","Yu Gothic",Meiryo,sans-serif;line-height:1.8;letter-spacing:.01em;line-break:strict}
img{display:block;max-width:100%;height:auto}
a{color:var(--color-accent);text-decoration:none;text-underline-offset:.15em}
a:hover{color:var(--color-accent-hover);text-decoration:underline}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:var(--radius-sm)}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:var(--track-tight);line-height:var(--lh-tight);color:var(--color-text)}
h1{font-size:var(--fs-h1)}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1.25em;padding-left:1.25em}
li{margin:.3em 0}
strong{font-weight:600}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.skip{position:absolute;left:-999px;top:var(--space-2);z-index:100;background:var(--color-text);color:#fff;padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm)}
.skip:focus{left:var(--space-2)}
.eyebrow{font-size:var(--fs-eyebrow);font-weight:600;letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--color-text-muted);margin:0 0 .75em}
html[lang^="zh"] .eyebrow{letter-spacing:.12em}
.lede{font-size:var(--fs-lede);color:var(--color-text-2);max-width:40rem}
.section-lede{color:var(--color-text-2);max-width:40rem;margin-bottom:var(--space-10)}
.badge{display:inline-block;font-size:var(--fs-eyebrow);font-weight:600;color:var(--color-accent);background:var(--color-accent-soft);padding:.2em .7em;border-radius:var(--radius-pill);vertical-align:middle}
/* Buttons: one height everywhere */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:var(--btn-h);padding:0 var(--space-5);border-radius:var(--radius-sm);font-weight:600;font-size:1rem;line-height:1.2;border:1px solid transparent;transition:background-color .15s ease,color .15s ease,border-color .15s ease}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--color-accent);color:var(--color-on-accent)}
.btn-primary:hover{background:var(--color-accent-hover);color:var(--color-on-accent)}
.btn-secondary{background:var(--color-bg);color:var(--color-text);border-color:var(--color-line)}
.btn-secondary:hover{border-color:var(--color-text-2);color:var(--color-text)}
.more{font-weight:600;display:inline-flex;align-items:center;min-height:var(--tap)}
.more span[aria-hidden],.links a span[aria-hidden]{margin-left:.3em}
/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--color-line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:var(--header-h);gap:var(--space-4)}
/* Brand as text on the left (no logo image); navigation and language selector on the right. */
.brand{font-weight:600;font-size:1.0625rem;letter-spacing:-.01em;color:var(--color-text);display:inline-flex;align-items:center;min-height:var(--tap);white-space:nowrap}
.brand:hover{color:var(--color-text);text-decoration:none}
.site-nav{display:flex;align-items:center;gap:var(--space-8)}
.site-nav ul{display:flex;gap:var(--space-8);margin:0;padding:0;list-style:none}
.site-nav li{margin:0}
.site-nav a{color:var(--color-text-2);font-size:var(--fs-ui);font-weight:500;display:inline-flex;align-items:center;min-height:var(--tap)}
.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--color-text);text-decoration:none}
/* Language selector */
.lang{display:inline-flex;align-items:center;gap:6px;font-size:var(--fs-small);font-weight:600;border:1px solid var(--color-line);border-radius:var(--radius-pill);padding:0 var(--space-3);min-height:var(--control-h)}
.lang .lang-current{color:var(--color-text)}
.lang .lang-switch{color:var(--color-text-muted);min-height:var(--control-h);display:inline-flex;align-items:center}
.lang .lang-switch:hover{color:var(--color-accent);text-decoration:none}
.lang-sep{color:var(--color-line)}
.menu-btn{display:none;appearance:none;background:none;border:1px solid var(--color-line);border-radius:var(--radius-sm);min-height:var(--tap);min-width:var(--tap);padding:0 var(--space-3);font:inherit;font-size:var(--fs-small);font-weight:600;color:var(--color-text);align-items:center;gap:var(--space-2);cursor:pointer}
.menu-icon{position:relative;width:18px;height:2px;background:var(--color-text);display:inline-block}
.menu-icon::before,.menu-icon::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--color-text)}
.menu-icon::before{top:-6px}.menu-icon::after{top:6px}
/* Hero */
.hero{padding:clamp(64px,10vw,112px) 0 var(--section-y)}
/* Home: the brand statement is the visual core — large type, generous whitespace, one language per page. */
/* Home hero: content-sized, ~40% shorter than before; balanced above and below the statement. */
.page-home .hero{padding:clamp(44px,6.5vw,72px) 0 clamp(24px,3.5vw,38px)}
.page-home .hero h1{font-size:var(--fs-display);max-width:12ch;letter-spacing:-.03em;line-height:1.05}
html[lang="ja"] .page-home .hero h1{font-size:clamp(2rem,6vw,4rem);letter-spacing:0;line-height:1.25;max-width:none}
.nobr{white-space:nowrap}
html[lang^="zh"] .page-home .hero h1{font-size:clamp(2.25rem,10.5vw,5.25rem);letter-spacing:.01em;line-height:1.2;max-width:none;white-space:nowrap}
.page-home .hero .lede{margin-top:var(--space-4);font-size:1.0625rem;line-height:1.5;color:var(--color-text-muted);max-width:36rem}
.hero .lede{margin-top:var(--space-4)}
.ctas{display:flex;flex-wrap:wrap;gap:var(--space-3);margin-top:var(--space-8)}
/* Products (home) */
/* Products: very light grey band, no rules; cards are equal columns with aligned rows. */
.products{padding:clamp(40px,6vw,64px) 0;background:var(--color-surface)}
.products h2{margin-bottom:var(--space-6)}
/* Two equal columns: XX left, HOWHY right; every row (icon, heading, text, badge, link) aligned via subgrid. Stacked on narrow screens, XX first. No product numbering. */
.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--space-12);row-gap:0}
.product{display:grid;grid-template-rows:subgrid;grid-row:span 5;align-content:start;min-width:0}
.product>*{margin:0;align-self:start}
.product .product-media{margin-bottom:var(--space-4)}
.product-media img{border-radius:var(--radius-lg);width:var(--icon-hero);height:var(--icon-hero);box-shadow:0 0 0 1px var(--color-line)}
.product h3{font-size:1.75rem;letter-spacing:var(--track-tight);margin-bottom:var(--space-2)}
.product h3 a{color:var(--color-text)}
.product .statement{margin-bottom:var(--space-6)}
.product .store{align-self:end;margin-bottom:var(--space-1)}
/* One real store entry per product: App Store only. */
.product .store{margin-bottom:var(--space-2)}
.product .store .btn{min-width:15rem}
.brand-concept{font-weight:500;color:var(--color-text-muted)}
.brand-zh{font-weight:500;color:var(--color-text-muted);margin-left:.1em;white-space:nowrap}
.product-head h1 .brand-zh,.product h3 .brand-zh{font-size:.85em}
.statement{font-size:1.25rem;font-weight:600;color:var(--color-text);margin:0 0 .5em}
.category{font-size:var(--fs-small);color:var(--color-text-muted);margin:0 0 1em}
/* Company (minimal): one headline, one muted line; ~30% less vertical space than a standard section */
.company{padding:clamp(40px,6vw,64px) 0}
.company h2{margin-bottom:.4em}
.company-line{color:var(--color-text-muted);font-size:var(--fs-ui);margin:0;letter-spacing:.02em}
/* Product page */
.product-hero{padding-bottom:var(--section-y)}
.product-head{display:flex;align-items:center;gap:var(--space-5);margin-bottom:var(--space-5)}
.product-head img{width:var(--icon-hero);height:var(--icon-hero);border-radius:var(--radius-lg);box-shadow:0 0 0 1px var(--color-line);flex:none}
.product-hero .statement{font-size:clamp(1.25rem,2.4vw,1.625rem);margin-top:.5rem}
.product-hero .status{margin-top:var(--space-6);color:var(--color-text-2);max-width:40rem}
.product-hero .ctas{margin-top:var(--space-5)}
.product-hero .ctas .btn{min-width:15rem}
.sublinks ul{display:flex;flex-wrap:wrap;gap:var(--space-2) var(--space-6);list-style:none;padding:0;margin:var(--space-6) 0 0}
.sublinks a{font-weight:600;font-size:var(--fs-ui);display:inline-flex;min-height:var(--tap);align-items:center}
.features{padding:var(--section-y) 0;background:var(--color-surface)}
.features h2{margin-bottom:var(--space-6)}
.feature-grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-6)}
.feature-grid li{margin:0;background:var(--color-bg);border:1px solid var(--color-line);border-radius:var(--radius-md);padding:var(--space-5) var(--space-6)}
.feature-grid h3{font-size:1.0625rem;margin-bottom:.35em}
.feature-grid p{color:var(--color-text-2);margin:0;font-size:var(--fs-ui)}
.product-sections{padding:var(--space-10) 0 var(--section-y)}
.narrow{max-width:46rem}
.narrow p,.narrow li{color:var(--color-text-2)}
.narrow strong{color:var(--color-text)}
/* Prose pages */
.prose{max-width:46rem;padding-top:var(--section-y);padding-bottom:var(--section-y)}
.page-head{margin-bottom:var(--space-10)}
.page-head .meta{color:var(--color-text-muted);font-size:var(--fs-ui);margin:.75rem 0 0}
.page-head .lede{margin-top:var(--space-4)}
.block{margin-top:var(--space-10)}
.block h2{font-size:var(--fs-h2-prose);margin-bottom:.6em}
.block h3{margin:1.25em 0 .4em}
.prose p,.prose li{color:var(--color-text-2)}
.prose strong{color:var(--color-text)}
.notice{border:1px solid var(--color-line);border-radius:var(--radius-md);padding:var(--space-4) var(--space-5);margin:0 0 var(--space-8);color:var(--color-text-2);font-size:var(--fs-ui)}
.notice p{margin:0}
.callout{border-left:3px solid var(--color-accent);background:var(--color-accent-soft);padding:var(--space-4) var(--space-5);border-radius:0 var(--radius-md) var(--radius-md) 0;margin:1em 0 1.25em}
.callout p{margin:0;color:var(--color-text)}
.steps{list-style:none;padding:0;margin:0 0 1.5em;counter-reset:step}
.steps li{position:relative;padding:0 0 1.5em 3.25rem;margin:0;counter-increment:step}
.steps li::before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:.1em;font-weight:600;font-size:var(--fs-eyebrow);letter-spacing:.06em;color:var(--color-accent);width:2.25rem;height:2.25rem;border:1px solid var(--color-line);border-radius:var(--radius-pill);display:flex;align-items:center;justify-content:center;background:var(--color-bg)}
.steps li::after{content:"";position:absolute;left:calc(1.125rem - .5px);top:2.5rem;bottom:0;width:1px;background:var(--color-line)}
.steps li:last-child::after{display:none}
.steps h3{margin:0 0 .25em;font-size:1.0625rem}
.steps p{margin:0}
.links{list-style:none;padding:0;margin:0 0 1.25em}
.links li{margin:0;border-top:1px solid var(--color-line)}
.links li:last-child{border-bottom:1px solid var(--color-line)}
.links a{display:flex;justify-content:space-between;min-height:48px;align-items:center;font-weight:600}
.contact a{font-weight:600;font-size:1.125rem}
.toc{margin-top:var(--space-6)}
.toc a{font-weight:500;min-height:44px}
.legacy-zh{border-top:1px solid var(--color-line);padding-top:var(--section-y)}
.legacy-zh .page-head h2{font-size:clamp(1.75rem,4vw,2.5rem)}
/* Footer (white, so the supplied logo sits on its own background) */
.site-footer{border-top:1px solid var(--color-line);padding:var(--space-10) 0 var(--space-8);background:var(--color-bg);font-size:var(--fs-ui)}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-6) var(--space-8);margin-bottom:var(--space-8)}
.footer-grid h2{font-size:var(--fs-eyebrow);letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--color-text-muted);margin-bottom:.75em}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin:.25em 0}
.footer-grid a{color:var(--color-text-2);display:inline-flex;min-height:32px;align-items:center}
.footer-grid a:hover{color:var(--color-text)}
.copyright{color:var(--color-text-muted);margin:0;font-size:var(--fs-small);padding-top:var(--space-6);border-top:1px solid var(--color-line)}
/* Responsive */
@media (max-width:900px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  body{font-size:16px}
  .menu-btn{display:inline-flex}
  .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--color-bg);border-bottom:1px solid var(--color-line);padding:var(--space-2) var(--gutter) var(--space-4);flex-direction:column;align-items:stretch;gap:var(--space-2)}
  .site-nav.open,html.no-js .site-nav{display:flex}
  .site-nav ul{flex-direction:column;gap:0}
  .site-nav a{min-height:48px;font-size:1.0625rem}
  .lang{align-self:flex-start;margin-top:var(--space-1)}
  .brand{font-size:1rem}
  .product-grid{grid-template-columns:1fr;column-gap:0}
  .product{padding:0}
  .product+.product{margin-top:var(--space-10)}
  .product .store .btn,.product-hero .ctas .btn{width:100%}
  .product .product-media{margin-bottom:var(--space-3)}
  .product-media img,.product-head img{width:72px;height:72px;border-radius:17px}
  .feature-grid{grid-template-columns:1fr}
  .product-head{align-items:center}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}
@media print{.site-header,.site-footer,.skip{display:none}body{font-size:12pt}.prose{max-width:none}}