:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-synthesis: none;
  background: #f5f7fb;
  color: #18243b;
  --ink: #18243b;
  --muted: #66738b;
  --quiet: #8591a4;
  --line: #e3e8f0;
  --accent: #3156ca;
  --accent-dark: #2445b0;
  --accent-soft: #e8efff;
}
* { box-sizing: border-box; }
html { min-width: 320px; }
body { margin: 0; min-height: 100dvh; overflow-x: hidden; background: #f5f7fb; }
body::before { content: ""; position: fixed; width: 720px; height: 720px; top: -510px; right: -240px; border: 1px solid #e4e9f2; border-radius: 50%; pointer-events: none; }
a { color: inherit; }
button { font: inherit; }
.page-shell { position: relative; max-width: 1180px; min-height: 100dvh; margin: 0 auto; padding: 0 36px; display: flex; flex-direction: column; }
.site-header { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-size: 22px; font-weight: 760; letter-spacing: -.045em; color: #1c2842; }
.brand img { width: 38px; height: 38px; border-radius: 10px; }
.header-label { color: #75829a; font-size: 12px; font-weight: 600; letter-spacing: .04em; }
.content { flex: 1; display: flex; align-items: center; justify-content: center; padding: 36px 0 72px; }
.invitation-card { width: 100%; max-width: 1050px; min-height: 620px; display: grid; grid-template-columns: minmax(0, .84fr) minmax(0, 1.16fr); overflow: hidden; background: #fff; border: 1px solid #e7ebf2; border-radius: 28px; box-shadow: 0 28px 64px rgba(42, 59, 100, .10), 0 3px 10px rgba(42, 59, 100, .04); }
.card-visual { position: relative; min-width: 0; min-height: 620px; display: flex; flex-direction: column; overflow: hidden; padding: 42px 42px 30px; background: #edf2fa; border-right: 1px dashed #cbd5e5; }
.card-visual::after { content: ""; position: absolute; width: 370px; height: 370px; left: -240px; bottom: -205px; border: 1px solid #d5deed; border-radius: 50%; pointer-events: none; }
.visual-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; position: relative; z-index: 1; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--accent); font-size: 12px; font-weight: 720; letter-spacing: .1em; }
.eyebrow-line { width: 22px; height: 2px; background: var(--accent); border-radius: 2px; }
.visual-brand { color: #92a0b8; font-size: 10px; font-weight: 730; letter-spacing: .16em; }
.visual-copy { position: relative; z-index: 1; margin-top: 80px; }
h1 { max-width: 395px; margin: 0; color: var(--ink); font-size: clamp(35px, 3.7vw, 51px); font-weight: 780; letter-spacing: -.055em; line-height: 1.17; text-wrap: balance; overflow-wrap: anywhere; }
.visual-rule { display: block; width: 38px; height: 3px; margin: 26px 0 17px; border-radius: 3px; background: var(--accent); }
.visual-copy p { margin: 0; color: #72819c; font-size: 14px; font-weight: 520; text-wrap: pretty; }
.visual-art { position: relative; width: 285px; height: 210px; margin: auto 0 0 auto; flex: 0 0 auto; }
.art-orbit { position: absolute; left: 50%; top: 50%; border: 1px solid #c5d3ea; border-radius: 50%; transform: translate(-50%,-50%) rotate(-23deg); }
.art-orbit-one { width: 270px; height: 145px; }
.art-orbit-two { width: 230px; height: 128px; transform: translate(-50%,-50%) rotate(29deg); }
.art-halo { position: absolute; width: 132px; height: 132px; left: 50%; top: 50%; transform: translate(-50%,-50%); border-radius: 50%; background: #e2eaf8; }
.art-center { position: absolute; width: 82px; height: 82px; left: 50%; top: 50%; transform: translate(-50%,-50%); display: grid; place-items: center; padding: 8px; border: 1px solid #d8e2f3; border-radius: 23px; background: #f8faff; box-shadow: 0 12px 25px rgba(44, 73, 130, .13); }
.art-center img { width: 100%; height: 100%; display: block; border-radius: 16px; }
.art-star { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.art-star-one { left: 19px; top: 83px; }
.art-star-two { right: 19px; bottom: 42px; }
.card-body { min-width: 0; display: flex; flex-direction: column; padding: 43px 46px 36px; }
.card-top { display: flex; align-items: center; gap: 12px; min-width: 0; }
.host-avatar { position: relative; flex: 0 0 48px; height: 48px; display: grid; place-items: center; overflow: hidden; border-radius: 14px; background: #dce6fa; }
.host-avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.avatar-fallback { color: var(--accent); font-weight: 760; font-size: 19px; }
.host-copy { min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.host-kicker { color: var(--quiet); font-size: 11px; font-weight: 590; }
.host-copy strong { color: var(--ink); font-size: 15px; font-weight: 680; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.status-pill { display: inline-flex; align-items: center; gap: 6px; flex: 0 0 auto; max-width: 128px; margin-left: auto; padding: 8px 10px; border-radius: 8px; background: var(--accent-soft); color: var(--accent-dark); font-size: 11px; font-weight: 690; text-align: center; }
.status-dot { width: 5px; height: 5px; flex: 0 0 auto; border-radius: 50%; background: var(--accent); }
.invite-line { margin: 19px 0 0; color: #718099; font-size: 14px; line-height: 1.6; text-wrap: pretty; overflow-wrap: anywhere; }
.organizer-name { color: #3b4963; font-weight: 650; }
.card-rule { height: 1px; margin: 28px 0 30px; background: var(--line); }
.details { padding: 2px 17px; border: 1px solid var(--line); border-radius: 15px; background: #f8fafd; }
.detail-row { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); }
.detail-row:last-child { border-bottom: 0; }
.detail-row > div:first-child { min-width: 0; display: flex; flex-direction: column; gap: 5px; padding: 12px 0; }
.detail-label { color: var(--muted); font-size: 12px; font-weight: 570; }
.detail-value { color: var(--ink); font-size: 16px; font-weight: 650; overflow-wrap: anywhere; }
.meeting-number { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: 24px; font-weight: 720; letter-spacing: .025em; font-variant-numeric: tabular-nums; }
.schedule-value { font-size: 13px; font-weight: 570; }
.detail-actions { display: flex; flex: 0 0 auto; gap: 6px; }
.mini-button { flex: 0 0 auto; min-width: 44px; min-height: 44px; padding: 0 11px; border: 1px solid #dbe2ec; border-radius: 9px; background: #fff; color: #455573; font-size: 12px; font-weight: 650; cursor: pointer; transition: transform .16s ease-out, border-color .16s ease-out, background-color .16s ease-out; }
.mini-button:hover, .mini-button:focus-visible { border-color: #aabce5; background: #f0f4fd; }
.mini-button:active { transform: scale(.97); }
.actions { display: flex; flex-direction: column; align-items: center; gap: 16px; margin-top: 29px; }
.primary-action { width: 100%; min-height: 56px; display: inline-flex; align-items: center; justify-content: center; gap: 14px; padding: 12px 17px; border: 0; border-radius: 11px; background: var(--accent); color: #fff; text-align: center; text-decoration: none; font-size: 15px; font-weight: 730; cursor: pointer; transition: transform .16s ease-out, background-color .16s ease-out, box-shadow .16s ease-out; box-shadow: 0 8px 18px rgba(49, 86, 202, .18); }
.primary-action:hover, .primary-action:focus-visible { background: var(--accent-dark); box-shadow: 0 11px 23px rgba(49, 86, 202, .22); }
.primary-action:active { transform: scale(.99); }
.primary-action.disabled { background: #dfe4ed; color: #69768c; box-shadow: none; cursor: default; }
.download-link { color: var(--accent); font-size: 13px; font-weight: 650; text-decoration: none; text-align: center; }
.download-link:hover, .download-link:focus-visible { text-decoration: underline; text-underline-offset: 4px; }
.help-block { margin-top: auto; padding-top: 22px; }
.help-block p { margin: 0; color: var(--quiet); font-size: 11px; line-height: 1.55; text-wrap: pretty; }
.help-block p + p { margin-top: 6px; }
.help-block .status-note { color: #68768e; }
.site-footer { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-top: 1px solid #e6eaf1; color: #8a95a7; font-size: 11px; }
.site-footer nav { display: flex; gap: 20px; }
.site-footer a { color: #68768e; text-decoration: none; }
.site-footer a:hover, .site-footer a:focus-visible { color: var(--accent); text-decoration: underline; }
.toast { position: fixed; z-index: 10; bottom: max(24px, env(safe-area-inset-bottom)); left: 50%; transform: translateX(-50%); max-width: calc(100vw - 32px); padding: 11px 18px; border-radius: 10px; background: #22365c; color: #fff; box-shadow: 0 12px 28px rgba(38, 56, 97, .2); font-size: 12px; font-weight: 650; text-align: center; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
@media (max-width: 850px) {
  .page-shell { padding: 0 24px; }
  .content { padding: 22px 0 56px; }
  .invitation-card { max-width: 610px; grid-template-columns: 1fr; }
  .card-visual { min-height: 238px; padding: 28px 31px; border-right: 0; border-bottom: 1px dashed #cbd5e5; }
  .visual-copy { margin-top: 40px; }
  h1 { max-width: 485px; font-size: clamp(31px, 6vw, 43px); }
  .visual-rule { margin: 16px 0 10px; }
  .visual-art { display: none; }
  .card-body { padding: 31px 34px 32px; }
  .help-block { margin-top: 24px; }
}
@media (max-width: 520px) {
  body::before { display: none; }
  .page-shell { padding: 0 16px; }
  .site-header { min-height: 74px; }
  .brand { font-size: 19px; }
  .brand img { width: 34px; height: 34px; }
  .header-label { font-size: 11px; }
  .content { padding: 11px 0 43px; }
  .invitation-card { border-radius: 20px; }
  .card-visual { min-height: 190px; padding: 24px 23px 22px; }
  .visual-brand { display: none; }
  .visual-copy { margin-top: 27px; }
  h1 { font-size: clamp(28px, 8vw, 36px); line-height: 1.2; }
  .visual-copy p { font-size: 12px; }
  .visual-art { display: none; }
  .card-body { padding: 26px 22px 28px; }
  .host-avatar { flex-basis: 43px; height: 43px; border-radius: 12px; }
  .status-pill { padding: 7px 8px; font-size: 10px; }
  .invite-line { font-size: 13px; }
  .card-rule { margin: 23px 0; }
  .details { padding: 1px 12px; }
  .meeting-number { font-size: 21px; }
  .detail-actions { gap: 4px; }
  .mini-button { min-width: 42px; min-height: 42px; padding: 0 9px; }
  .site-footer { min-height: 106px; padding: 19px 0; align-items: flex-start; justify-content: center; flex-direction: column; gap: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}