:root{--blue:#153e75;--blue-2:#245f9d;--ink:#17212d;--muted:#667085;--line:#d9e1ea;--paper:#fff;--wash:#f4f7fb;--red:#a63832;--shadow:0 22px 60px rgba(22,49,82,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;line-height:1.75}a{color:inherit}.site-header{height:76px;padding:0 max(24px,calc((100vw - 1180px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(255,255,255,.96);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700;color:var(--blue)}.brand-logo{width:52px;height:52px;display:block;object-fit:contain}.header-action{font-size:14px;text-decoration:none;color:white;background:var(--blue);padding:10px 18px;border-radius:4px}.section-shell{width:min(1180px,calc(100% - 48px));margin:0 auto}.hero{min-height:680px;display:grid;grid-template-columns:1.45fr .75fr;gap:80px;align-items:center;padding-top:86px;padding-bottom:86px}.date-line{font-weight:700;color:var(--red);letter-spacing:.08em}.hero h1{font-family:"Noto Serif TC","Songti TC",serif;font-size:clamp(44px,5vw,76px);line-height:1.18;letter-spacing:-.02em;color:var(--blue);margin:18px 0 24px}.lead{font-size:20px;max-width:680px;color:#405066}.hero-actions{display:flex;gap:12px;margin-top:34px}.button{display:inline-flex;align-items:center;justify-content:center;padding:13px 22px;text-decoration:none;border:1px solid var(--blue);border-radius:4px;font-weight:700}.button.primary{background:var(--blue);color:white}.button.secondary{color:var(--blue)}.event-card{background:var(--blue);color:white;padding:38px;box-shadow:var(--shadow)}.event-card div{padding:20px 0;border-bottom:1px solid rgba(255,255,255,.18)}.event-card div:first-child{padding-top:0}.event-card span{display:block;font-size:13px;opacity:.7;margin-bottom:4px}.event-card strong{font-size:18px;line-height:1.6}.event-card>a{display:inline-block;margin-top:24px;color:white;text-underline-offset:4px}.invitation{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:110px 0;display:grid;grid-template-columns:120px 1fr;gap:60px}.section-number{font-family:Georgia,serif;font-size:22px;color:var(--red);letter-spacing:.08em}.invitation-body{max-width:800px}.invitation h2,.section-heading h2,.rsvp-intro h2{font-family:"Noto Serif TC","Songti TC",serif;color:var(--blue);font-size:40px;line-height:1.3;margin:0 0 38px}.invitation-body>p{font-size:18px;margin:0 0 20px}.signature{margin-top:52px;text-align:right;color:#35445a}.agenda{padding:110px 0}.section-heading{display:grid;grid-template-columns:120px 1fr;gap:60px;margin-bottom:56px}.section-heading h2{margin-bottom:10px}.section-heading p{margin:0;color:var(--muted)}.agenda-grid{margin-left:180px;border-top:2px solid var(--blue)}.agenda-item{display:grid;grid-template-columns:190px 1fr;min-height:74px;align-items:center;border-bottom:1px solid var(--line)}.agenda-item time{font-variant-numeric:tabular-nums;color:var(--blue);font-weight:700}.agenda-item p{margin:0;font-size:17px}.agenda-item.featured p{font-weight:700}.agenda-item.break{color:var(--muted)}.agenda-item.afternoon{background:var(--wash);padding-inline:18px;margin-inline:-18px}.location-links{margin:54px 0 0 180px;display:grid;grid-template-columns:1fr 1fr;gap:18px}.location-links a{display:flex;flex-direction:column;text-decoration:none;border-top:1px solid var(--blue);padding:18px 4px}.location-links strong{color:var(--blue);margin-bottom:4px}.location-links span{color:var(--muted)}.rsvp-section{background:var(--wash);padding:110px 24px}.rsvp-wrap{width:min(1180px,100%);margin:auto;display:grid;grid-template-columns:.75fr 1.25fr;gap:90px;align-items:start}.rsvp-intro h2{margin:16px 0 22px}.rsvp-intro p{font-size:18px}.privacy-note{font-size:14px!important;color:var(--muted)}form{display:grid;grid-template-columns:1fr 1fr;gap:24px 18px;background:white;padding:42px;box-shadow:var(--shadow)}.field{display:flex;flex-direction:column;gap:8px}.field label{font-weight:700;font-size:14px;color:#344054}.field input{width:100%;height:48px;border:1px solid #bfc9d6;border-radius:3px;padding:0 13px;font:inherit;background:white}.field input:focus{outline:3px solid rgba(36,95,157,.16);border-color:var(--blue-2)}.submit-button{grid-column:1/-1;margin-top:8px;height:52px;border:0;border-radius:3px;background:var(--blue);color:white;font:700 16px inherit;cursor:pointer}.submit-button:disabled{opacity:.6;cursor:wait}.form-message{grid-column:1/-1;margin:0;color:var(--red);font-size:14px}.honeypot{position:absolute;left:-9999px}.success-panel{background:white;padding:60px;text-align:center;box-shadow:var(--shadow)}.success-mark{margin:auto;width:62px;height:62px;border-radius:50%;display:grid;place-items:center;background:#e8f5ee;color:#237a4b;font-size:30px}.success-panel h3{color:var(--blue);font:700 30px "Noto Serif TC","Songti TC",serif}footer{height:110px;padding:0 max(24px,calc((100vw - 1180px)/2));display:flex;align-items:center;justify-content:space-between;background:#0f2d55;color:white}footer a{color:white}.button,.header-action,.submit-button,.location-links a{transition:transform .2s ease,background .2s ease}.button:hover,.header-action:hover,.submit-button:hover,.location-links a:hover{transform:translateY(-2px)}
@media(max-width:800px){.site-header{height:66px}.brand span:last-child{display:none}.section-shell{width:min(100% - 32px,1180px)}.hero{grid-template-columns:1fr;gap:42px;min-height:auto;padding:64px 0}.hero h1{font-size:44px}.lead{font-size:18px}.event-card{padding:28px}.invitation{padding:72px 0;grid-template-columns:1fr;gap:18px}.invitation h2,.section-heading h2,.rsvp-intro h2{font-size:32px}.section-heading{grid-template-columns:1fr;gap:12px}.agenda{padding:72px 0}.agenda-grid,.location-links{margin-left:0}.agenda-item{grid-template-columns:1fr;gap:2px;padding:14px 0}.agenda-item.afternoon{padding-inline:14px;margin-inline:-14px}.location-links{grid-template-columns:1fr}.rsvp-section{padding:72px 16px}.rsvp-wrap{grid-template-columns:1fr;gap:36px}form{grid-template-columns:1fr;padding:24px}.field{grid-column:1/-1}.hero-actions{flex-direction:column}.button{width:100%}footer{height:auto;padding:30px 24px;flex-direction:column;align-items:flex-start}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.event-card h2{margin:0 0 14px;font:700 21px "Noto Serif TC","Songti TC",serif}.event-card div:first-of-type{padding-top:0}.invitation-body .subject-line{padding:16px 18px;border-left:3px solid var(--red);background:var(--wash);color:#29384c}
.deadline-note{margin-top:28px;padding:16px 18px;border-left:3px solid var(--red);background:rgba(255,255,255,.72);color:var(--blue)}.deadline-note strong{color:var(--red)}.required-mark{margin-left:3px;color:var(--red)}.footer-contact{display:flex;align-items:center;gap:24px}.footer-contact a{text-underline-offset:4px}@media(max-width:800px){.footer-contact{align-items:flex-start;flex-direction:column;gap:6px}}
@media(max-width:480px){.site-header{padding-inline:14px}.brand-logo{width:46px;height:46px}.header-action{padding:9px 12px;font-size:13px}.section-shell{width:min(100% - 24px,1180px)}.hero{padding:44px 0;gap:28px}.hero h1{font-size:clamp(32px,11vw,40px)}.event-card{padding:22px}.invitation,.agenda{padding-top:56px;padding-bottom:56px}.agenda-item.afternoon{margin-inline:0;padding-inline:12px}.rsvp-section{padding:56px 12px}.rsvp-wrap{gap:28px}form{padding:20px 16px;gap:20px 16px}footer{padding:24px 16px}}
.attendance-field{grid-column:1/-1;border:0;padding:0;margin:0}.attendance-field legend{margin-bottom:9px;font-weight:700;font-size:14px;color:#344054}.attendance-options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.attendance-options label{display:flex;align-items:center;gap:10px;min-height:52px;padding:10px 14px;border:1px solid #bfc9d6;background:white;cursor:pointer}.attendance-options label:has(input:checked){border-color:var(--blue);background:var(--wash);color:var(--blue);font-weight:700}.attendance-options input{width:18px;height:18px;margin:0;accent-color:var(--blue);flex:0 0 auto}.attendance-detail[hidden]{display:none}@media(max-width:600px){.attendance-options{grid-template-columns:1fr}}