:root {
  --ink: #151719;
  --muted: #69717c;
  --soft: #f0f2f5;
  --paper: #fbfcff;
  --line: #e4e7ec;
  --blue: #1769e8;
  --blue-dark: #1057ca;
  --font: "Avenir Next", "PingFang SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font); -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; z-index: 5; inset: 0; opacity: .028; pointer-events: none; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
a, button { font: inherit; }
a { color: inherit; }
button { cursor: pointer; }
.page-shell { min-height: 100dvh; display: grid; grid-template-rows: auto 1fr auto; }
.skip-link { position: fixed; z-index: 10; top: -64px; left: 18px; padding: 10px 14px; background: var(--blue); color: #f8fbff; text-decoration: none; transition: top .2s ease; }
.skip-link:focus { top: 14px; }

.site-header { height: 74px; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(22px, 4.4vw, 58px); }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-size: 18px; font-weight: 700; letter-spacing: -.045em; text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 7px; object-fit: cover; }
.brand small { margin-left: 5px; color: var(--muted); font-size: 10px; font-weight: 500; letter-spacing: .06em; vertical-align: middle; }
.header-link { min-height: 38px; display: inline-flex; align-items: center; gap: 7px; padding: 0 15px; border-radius: 999px; background: var(--blue); color: #f8fbff; font-size: 13px; font-weight: 650; text-decoration: none; transition: background .2s ease, transform .2s ease; }
.header-link:hover, .primary-action:hover { background: var(--blue-dark); transform: translateY(-1px); }

.invite-hero { --pointer-x: 50%; --pointer-y: 50%; position: relative; display: grid; min-height: calc(100dvh - 142px); place-items: center; overflow: hidden; padding: 58px 24px 70px; isolation: isolate; }
.invite-hero::before { content: ""; position: absolute; z-index: -4; inset: 0; background: radial-gradient(470px circle at var(--pointer-x) var(--pointer-y), rgba(23, 105, 232, .12), transparent 63%), radial-gradient(560px circle at 50% 47%, rgba(23, 105, 232, .055), transparent 68%); transition: background .16s linear; }
.invite-hero::after { content: ""; position: absolute; z-index: -3; inset: 0; background: linear-gradient(90deg, rgba(251,252,255,.78), transparent 26%, transparent 74%, rgba(251,252,255,.78)); pointer-events: none; }
.ambient-field { position: absolute; z-index: -2; width: min(72vw, 850px); min-width: 460px; aspect-ratio: 1; left: 50%; top: 50%; transform: translate(-50%, -50%); pointer-events: none; }
.ambient-orbit { position: absolute; display: block; border: 1px solid rgba(23,105,232,.12); border-radius: 50%; }
.orbit-a { inset: 3%; animation: orbit-turn 24s linear infinite; }
.orbit-b { inset: 18%; border-color: rgba(23,105,232,.18); transform: rotateX(66deg) rotateZ(25deg); animation: orbit-tilt 18s linear infinite; }
.orbit-c { inset: 34%; border-color: rgba(23,105,232,.13); transform: rotateX(66deg) rotateZ(108deg); animation: orbit-turn 14s linear infinite reverse; }
.ambient-dot { position: absolute; display: block; width: 9px; height: 9px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 7px rgba(23,105,232,.1); }
.dot-a { top: 17%; right: 23%; animation: dot-pulse 2.8s ease-in-out infinite; }
.dot-b { bottom: 18%; left: 24%; width: 6px; height: 6px; opacity: .62; animation: dot-pulse 2.8s 1.2s ease-in-out infinite; }
@keyframes orbit-turn { to { transform: rotate(360deg); } }
@keyframes orbit-tilt { to { transform: rotateX(66deg) rotateZ(385deg); } }
@keyframes dot-pulse { 50% { transform: scale(1.48); opacity: .45; } }
.hero-watermark { position: absolute; z-index: -1; width: min(64vw, 700px); min-width: 330px; opacity: .075; mix-blend-mode: multiply; transform: translate(34%, 5%) rotate(-11deg); pointer-events: none; animation: watermark-float 8s ease-in-out infinite; }
@keyframes watermark-float { 50% { transform: translate(34%, 1%) rotate(-7deg) scale(1.02); } }
.hero-content { width: min(100%, 475px); text-align: center; animation: enter .82s cubic-bezier(.16, 1, .3, 1) both; }
@keyframes enter { from { opacity: 0; transform: translateY(22px) scale(.985); } to { opacity: 1; transform: none; } }
.hero-logo { width: 74px; height: 74px; margin-bottom: 23px; border-radius: 21px; box-shadow: 0 14px 34px rgba(31, 75, 145, .16); object-fit: cover; animation: logo-float 5.5s ease-in-out infinite; }
@keyframes logo-float { 50% { transform: translateY(-8px) rotate(1.5deg); } }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1 { margin-bottom: 12px; font-size: clamp(44px, 5.1vw, 65px); font-weight: 720; letter-spacing: -.065em; line-height: 1; }
.hero-copy { max-width: 340px; margin: 0 auto 28px; color: var(--muted); font-size: 16px; line-height: 1.55; }

.invite-card { padding: 23px; border: 1px solid rgba(23,105,232,.11); border-radius: 22px; background: rgba(252,254,255,.94); box-shadow: 0 20px 48px rgba(35, 63, 106, .11), inset 0 1px 0 rgba(252,254,255,.8); text-align: left; animation: card-settle .92s .12s cubic-bezier(.16, 1, .3, 1) both; }
@keyframes card-settle { from { opacity: 0; transform: translateY(20px) scale(.97); } to { opacity: 1; transform: none; } }
.invite-card > p:first-child { margin-bottom: 9px; color: #545d68; font-size: 13px; font-weight: 650; }
.code-field { width: 100%; min-height: 62px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 17px; border: 0; border-radius: 15px; background: var(--soft); color: var(--ink); transition: background .2s ease, box-shadow .2s ease; }
.code-field:hover { background: #e8edf5; }
.code-field span { font-family: var(--mono); font-size: clamp(24px, 6vw, 32px); font-weight: 800; letter-spacing: -.08em; }
.code-field svg { width: 20px; height: 20px; flex: 0 0 20px; fill: none; stroke: var(--blue); stroke-width: 1.7; }
.card-helper { margin: 12px 4px 17px; color: var(--muted); font-size: 12px; line-height: 1.52; }
.primary-action { --magnet-x: 0px; --magnet-y: 0px; width: 100%; min-height: 51px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border-radius: 999px; background: var(--blue); color: #f8fbff; font-size: 15px; font-weight: 700; text-decoration: none; transform: translate(var(--magnet-x), var(--magnet-y)); transition: background .2s ease, transform .42s cubic-bezier(.16, 1, .3, 1), box-shadow .2s ease; }
.primary-action:hover { box-shadow: 0 10px 22px rgba(23,105,232,.24); }
.copy-link { display: block; width: fit-content; margin: 13px auto 0; border: 0; padding: 2px; background: transparent; color: #556170; font-size: 12px; text-decoration: underline; text-underline-offset: 3px; }
.hero-note { max-width: 390px; margin: 18px auto 0; color: #7d858e; font-size: 11px; line-height: 1.6; }

.how-it-works, .details-grid, .faq { padding: clamp(65px, 9vw, 120px) clamp(24px, 9vw, 132px); }
.motion-ready .reveal-section { opacity: 0; transform: translateY(24px); transition: opacity .75s cubic-bezier(.16, 1, .3, 1), transform .75s cubic-bezier(.16, 1, .3, 1); }
.motion-ready .reveal-section.is-visible { opacity: 1; transform: none; }
.how-it-works { border-top: 1px solid var(--line); background: #fcfdff; }
.section-heading p, .details-grid > div:first-child > p { margin-bottom: 12px; color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: .075em; }
.section-heading h2, .details-grid h2 { margin-bottom: 44px; font-size: clamp(31px, 4.5vw, 52px); letter-spacing: -.06em; line-height: 1.02; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 1120px; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.steps li { min-height: 215px; padding: 28px 28px 20px 0; border-right: 1px solid var(--line); }
.steps li + li { padding-left: 28px; }
.steps li:last-child { border-right: 0; }
.steps span { display: grid; width: 28px; height: 28px; place-items: center; margin-bottom: 35px; border-radius: 50%; background: #e9f0ff; color: var(--blue); font-family: var(--mono); font-size: 12px; font-weight: 700; }
.steps h3 { margin-bottom: 9px; font-size: 20px; letter-spacing: -.04em; }
.steps p { color: var(--muted); font-size: 14px; line-height: 1.6; }

.details-grid { display: grid; grid-template-columns: .94fr .68fr; gap: clamp(44px, 13vw, 180px); align-items: end; background: #f2f6fd; }
.details-grid h2 { margin-bottom: 0; }
.details-copy { max-width: 470px; }
.details-copy p { color: #414a56; font-size: 17px; line-height: 1.7; }
.details-copy a { color: var(--blue); font-size: 14px; font-weight: 700; text-underline-offset: 4px; }

.faq { max-width: 1240px; margin: 0 auto; width: 100%; }
.faq-list { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { min-height: 77px; display: flex; align-items: center; justify-content: space-between; gap: 24px; cursor: pointer; font-size: 18px; font-weight: 700; letter-spacing: -.035em; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary span { color: var(--blue); font-size: 25px; font-weight: 400; transition: transform .2s ease; }
.faq details[open] summary span { transform: rotate(45deg); }
.faq details p { max-width: 750px; margin: -3px 0 25px; color: var(--muted); font-size: 15px; line-height: 1.7; }

.site-footer { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; padding: 30px clamp(24px, 4.4vw, 58px); border-top: 1px solid var(--line); color: #6b727b; font-size: 12px; }
.site-footer p { margin: 0; }
.disclaimer { text-align: center; }
.site-footer nav { display: flex; justify-content: flex-end; gap: 17px; }
.site-footer a { text-underline-offset: 4px; }

.toast { position: fixed; z-index: 10; right: 22px; bottom: 22px; transform: translateY(100px); padding: 12px 16px; border-radius: 12px; background: #171a20; color: #f8fbff; box-shadow: 0 8px 22px rgba(20, 32, 51, .16); font-size: 13px; transition: transform .28s cubic-bezier(.16,1,.3,1); }
.toast.show { transform: translateY(0); }
.header-link:focus-visible, .primary-action:focus-visible, .code-field:focus-visible, .copy-link:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid rgba(23,105,232,.45); outline-offset: 3px; }

.legal-page { min-height: 100dvh; background: var(--paper); color: var(--ink); }
.legal-content { width: min(760px, calc(100% - 48px)); padding: clamp(70px, 13vw, 140px) 0; margin: 0 auto; }
.legal-content .text-link { color: var(--blue); }
.legal-content h1 { margin: 45px 0 30px; }
.legal-content > p:not(.section-index) { max-width: 680px; color: #4d5661; font-size: 17px; line-height: 1.75; }
.legal-content .section-index { margin-top: 48px; color: var(--blue); font-size: 12px; font-weight: 700; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 12px 19px; border-radius: 999px; background: var(--blue); color: #f8fbff; font-weight: 700; text-decoration: none; }

@media (max-width: 700px) {
  .site-header { height: 66px; padding-inline: 22px; }
  .header-link { min-height: 35px; padding-inline: 13px; font-size: 12px; }
  .invite-hero { min-height: calc(100dvh - 66px); padding: 42px 22px 55px; }
  .hero-watermark { width: 510px; transform: translate(17%, -1%) rotate(-11deg); }
  .ambient-field { min-width: 430px; }
  .hero-logo { width: 67px; height: 67px; margin-bottom: 20px; border-radius: 19px; }
  .invite-card { padding: 20px; border-radius: 19px; }
  .steps { grid-template-columns: 1fr; }
  .steps li, .steps li + li { min-height: auto; padding: 25px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .steps li:last-child { border-bottom: 0; }
  .steps span { margin-bottom: 20px; }
  .details-grid { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; gap: 13px; text-align: center; }
  .disclaimer, .site-footer nav { text-align: center; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .motion-ready .reveal-section { opacity: 1; transform: none; }
}