:root { --emerald: #12a675; --pine: #123c32; --amber: #f5a623; --mist: #f7faf8; --paper: #ffffff; --muted: #68736f; --line: #dce7e2; --content: 72rem; color-scheme: light; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--pine); background: var(--paper); font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; line-height: 1.65; }
a { color: inherit; text-underline-offset: .18em; }
a:hover { color: var(--emerald); }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; }
.skip-link { position: fixed; left: 1rem; top: -4rem; z-index: 9; padding: .5rem .75rem; color: var(--pine); background: var(--amber); }
.skip-link:focus { top: 1rem; }
.wrap { width: min(calc(100% - 2rem), var(--content)); margin-inline: auto; }
.site-header { position: relative; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.header-inner { min-height: 4.75rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .55rem; text-decoration: none; font-weight: 760; letter-spacing: -.03em; }
.brand img { width: 2.4rem; height: 1.6rem; }
.nav-toggle { border: 1px solid var(--line); border-radius: .4rem; padding: .45rem .7rem; color: var(--pine); background: var(--paper); font: inherit; }
.site-nav { position: absolute; left: 1rem; right: 1rem; top: 4.25rem; display: grid; gap: .25rem; padding: .8rem; border: 1px solid var(--line); background: var(--paper); box-shadow: 0 .7rem 1.5rem rgba(18,60,50,.09); }.site-nav[hidden] { display: none; }
.site-nav a { padding: .4rem; text-decoration: none; }
.hero { overflow: hidden; padding: 4.5rem 0 3rem; background: var(--mist); }
.hero-grid { display: grid; gap: 2.5rem; align-items: center; }
.eyebrow, .status { display: inline-flex; width: fit-content; padding: .28rem .65rem; border-radius: 999px; font-size: .9rem; font-weight: 650; }
.status { color: var(--pine); background: #fff3d8; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.045em; }
h1 { max-width: 10ch; margin: .7rem 0; font-size: clamp(2.8rem, 9vw, 5.8rem); }
h2 { margin-top: 0; font-size: clamp(1.75rem, 5vw, 3rem); }
.lede { max-width: 34rem; margin: 0 0 1.25rem; color: var(--muted); font-size: 1.14rem; }
.ledger-mark { position: relative; min-height: 18rem; display: grid; place-items: center; }
.bill-card { position: absolute; width: min(17rem, 78vw); padding: 1.2rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--paper); box-shadow: 0 1rem 2rem rgba(18,60,50,.1); }
.bill-card:first-child { transform: translate(-1.6rem,-1.5rem) rotate(-5deg); }
.bill-card:last-child { transform: translate(1.6rem,1.6rem) rotate(5deg); }
.bill-line { height: .55rem; margin: .7rem 0; border-radius: 999px; background: var(--line); }.bill-line.short { width: 58%; }.bill-line.green { width: 76%; background: var(--emerald); }
.section { padding: 4.5rem 0; }.section-copy { max-width: 44rem; }.section-copy h2 { text-wrap: balance; }.section-copy p, .legal-copy { max-width: 72ch; color: var(--muted); }
.scene-strip { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.5rem; padding: 1rem; border-block: 1px solid var(--line); }.scene-strip span { padding: .45rem .7rem; border-radius: .45rem; background: var(--mist); }
.flow { display: grid; gap: .6rem; margin-top: 1.5rem; }.flow-step { display: flex; align-items: center; gap: .75rem; padding: .85rem 0; border-bottom: 1px solid var(--line); font-weight: 650; }.flow-step b { color: var(--emerald); font-size: 1.25rem; }
.feature-ledger { display: grid; gap: 0; margin-top: 1.5rem; border-top: 1px solid var(--line); }.feature-ledger article { padding: 1.2rem 0; border-bottom: 1px solid var(--line); }.feature-ledger h3 { margin: 0 0 .25rem; }.feature-ledger p { margin: 0; color: var(--muted); }
.trust { background: var(--pine); color: var(--paper); }.trust p { max-width: 72ch; color: #d7e4df; }.status-area { padding: 3.5rem 0; text-align: center; background: #e8f5ef; }.status-area h2 { margin-bottom: .5rem; }
.legal-layout { display: grid; gap: 2rem; padding: 3rem 0 4.5rem; }.legal-nav { padding: 1rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--mist); }.legal-nav ol { margin: .4rem 0 0; padding-left: 1.3rem; }.legal-nav a { color: var(--pine); }.legal-copy h2 { margin-top: 2.5rem; font-size: 1.45rem; }.legal-copy p { color: var(--muted); }.legal-meta { color: var(--muted); }
.not-found { min-height: 72vh; display: grid; place-items: center; text-align: center; background: var(--mist); }.not-found h1 { max-width: none; }.not-found p { color: var(--muted); }.link-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
.invite { min-height: 72vh; display: grid; place-items: center; padding: 3.5rem 0; text-align: center; background: var(--mist); }.invite .wrap { display: grid; justify-items: center; gap: .4rem; }.invite h1 { max-width: none; margin: .6rem 0; font-size: clamp(2rem, 6vw, 3.2rem); }.invite p { max-width: 34rem; color: var(--muted); }.invite-code-line { margin: .4rem 0 1rem; }.invite-code-line code { display: inline-block; padding: .55rem 1.05rem; border: 1px solid var(--line); border-radius: .6rem; background: var(--paper); box-shadow: 0 .6rem 1.4rem rgba(18,60,50,.08); color: var(--pine); font-size: clamp(1.9rem, 8vw, 2.7rem); font-weight: 760; letter-spacing: .32em; }.invite-list { display: grid; gap: .5rem; margin: 1.1rem 0 0; padding: 0; list-style: none; }.invite-list li { max-width: 34rem; color: var(--muted); }
.site-footer { padding: 2.25rem 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .92rem; }.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }.footer-links { display: flex; gap: 1rem; }
@media (min-width: 48rem) { .nav-toggle { display: none; }.site-nav { position: static; display: flex !important; gap: 1.1rem; padding: 0; border: 0; box-shadow: none; }.site-nav a { padding: 0; }.hero { padding: 6.5rem 0 5rem; }.hero-grid { grid-template-columns: 1.1fr .9fr; }.flow { grid-template-columns: repeat(5, 1fr); }.flow-step { display: block; border-bottom: 0; border-left: 1px solid var(--line); padding: 0 1rem; }.flow-step:first-child { border-left: 0; padding-left: 0; }.feature-ledger { grid-template-columns: repeat(2, 1fr); column-gap: 2.5rem; }.legal-layout { grid-template-columns: 15rem minmax(0, 1fr); }.legal-nav { align-self: start; position: sticky; top: 1rem; } }
@media (prefers-reduced-motion: no-preference) { .bill-card { animation: settle .75s cubic-bezier(.2,.8,.2,1) both; }.bill-card:last-child { animation-delay: .12s; } @keyframes settle { from { opacity: 0; } to { opacity: 1; } } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }