:root{--purple:#856097;--ink:#4e3d56;--light:#eee4f4;--paper:#fffcf6;--line:#dfd0e6}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#eee7f1;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}main{max-width:520px;margin:auto;background:var(--paper);box-shadow:0 8px 60px #4930560d}.invitation-title{margin:0;padding:27px 16px 20px;text-align:center;font-family:"Kaiti SC","KaiTi","STKaiti",serif;font-size:28px;font-weight:400;letter-spacing:6px;color:var(--purple)}.poster{position:relative}.poster img{display:block;width:100%;height:auto}.poster-hint{text-align:center;color:#8c7e92;font-size:11px;margin:0;padding:14px 16px 4px;letter-spacing:1px}.rsvp{padding:33px 28px 110px;scroll-margin-top:16px}.eyebrow{color:#a588b5;font:italic 24px Georgia,serif;text-align:center;margin:0 0 8px}h1{font-family:"Kaiti SC","KaiTi","STKaiti",serif;font-size:29px;letter-spacing:4px;text-align:center;font-weight:400;margin:0 0 14px}.intro{font-size:13px;line-height:1.9;text-align:center;color:#8b7a92;margin:0 0 25px}.event{margin:0 0 30px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:12px;line-height:1.9}.event p{margin:0 0 6px}.event p:last-child{margin:0}form{display:grid;gap:24px}label,.legend{display:block;font-size:15px;font-weight:500;margin-bottom:11px}input[type=text],input[type=number]{font:16px inherit;color:var(--ink);font-family:inherit;font-size:16px;min-height:50px;border:1px solid var(--line);border-radius:8px;background:#fffefd;padding:13px 14px;width:100%;outline:none}input:focus{border-color:var(--purple);box-shadow:0 0 0 3px #a78cba20}input::placeholder{color:#b3a6b9}fieldset{border:0;padding:0;margin:0;min-width:0}legend{padding:0;margin-bottom:12px;font-size:15px;font-weight:500}.choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}.choice{position:relative;margin:0;font-size:14px;font-weight:400;cursor:pointer}.choice input{position:absolute;opacity:0;width:1px;height:1px}.choice span{display:block;text-align:center;padding:15px 8px;border:1px solid var(--line);border-radius:8px;background:#fffefd;transition:background .2s}.choice input:checked+span{background:#eee1f5;border-color:#a47bb5;color:#704b84}.choice input:focus-visible+span{outline:2px solid var(--purple);outline-offset:3px}.counter{display:flex;align-items:center;gap:12px}.counter input{text-align:center;max-width:88px}.counter button{font-size:22px;width:48px;min-height:48px;padding:0;background:#f6eff8;border:1px solid var(--line);color:var(--purple);border-radius:8px}.hint{font-size:12px;color:#99869f;line-height:1.7;margin:10px 0 0}.total{font-size:13px;color:#795787;margin:12px 0 0}.submit,.edit{width:100%;border:0;border-radius:9px;background:var(--purple);color:white;font-size:15px;padding:16px;font-family:inherit;cursor:pointer}.submit:disabled{opacity:.6;cursor:wait}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline:2px solid var(--purple);outline-offset:4px}button{font-family:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.45}.privacy{text-align:center;color:#a18fa7;font-size:11px;line-height:1.8;margin:15px 0 0}.error{color:#a04456;background:#fff0f0;border-radius:7px;font-size:13px;line-height:1.8;padding:12px;margin:0 0 18px}.success{text-align:center;padding:24px 0}.success .heart{font-size:36px;color:#b691c7}.success h2{font-size:23px;font-weight:400;letter-spacing:2px;margin:12px 0}.success p{font-size:14px;line-height:1.9}.success .edit{margin-top:20px}.withdraw{margin-top:14px;border:0;background:transparent;color:#9a879f;text-decoration:underline;padding:10px;font-size:12px}/* 圆形操作：紫色线稿与缓慢流动的香槟金边。 */
.bar{position:fixed;z-index:10;bottom:calc(104px + env(safe-area-inset-bottom,0px));left:50%;transform:translateX(-50%);display:flex;justify-content:space-between;width:100%;max-width:520px;padding:0 10px;pointer-events:none;transition:bottom .7s ease,width .7s ease,padding .7s ease}
.autoplay[data-scene="0"] .bar{bottom:var(--cover-actions-bottom,30vh);padding:0 4px}
.autoplay[data-scene="3"] .bar{bottom:var(--ending-actions-bottom,30vh);width:var(--ending-actions-width,188px);padding:0}
.bar a{--action-surface:#fffdf8;position:relative;isolation:isolate;flex:none;width:80px;height:80px;border:0;border-radius:50%;background:#be9349;color:var(--purple);font-family:inherit;font-size:13px;line-height:1.2;text-decoration:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;box-shadow:0 5px 20px #92703b24,0 0 0 1px #e6cb902e;pointer-events:auto;touch-action:manipulation;transition:transform .18s ease}
.bar a::before{content:"";position:absolute;inset:0;border-radius:inherit;z-index:-2;background:conic-gradient(from 20deg,#a57531 0deg,#d5b16a 65deg,#fff1bd 100deg,#b28238 150deg,#dfbe7a 215deg,#fff7d8 255deg,#ae7b31 310deg,#a57531 360deg);animation:gold-border-flow 7s linear infinite;pointer-events:none}
.bar a::after{content:"";position:absolute;inset:2px;border-radius:inherit;z-index:-1;background:var(--action-surface);box-shadow:inset 0 0 0 1px #ebd7ac85;pointer-events:none}
.bar #rsvp-open{--action-surface:#f3eaf7}
.bar #rsvp-open::before{animation-delay:-3.5s}
.bar a:active{transform:scale(.95)}
.bar[aria-hidden=true]{visibility:hidden}
.action-icon{display:block;object-fit:contain;flex:none;pointer-events:none}
.bar .action-icon{width:34px;height:34px}
.bar span{letter-spacing:2px;padding-left:2px}
@keyframes gold-border-flow{to{transform:rotate(360deg)}}
@media(max-width:350px){.bar{padding:0 6px}.bar a{width:74px;height:74px}.bar .action-icon{width:32px;height:32px}}
@media(max-height:650px){.bar{bottom:calc(78px + env(safe-area-inset-bottom,0px));padding:0 8px}.bar a{width:72px;height:72px;gap:4px;font-size:12px}.bar .action-icon{width:32px;height:32px}}
@media(prefers-reduced-motion:reduce){.bar,.bar a{transition:none}.bar a::before{animation:none}}
[hidden]{display:none!important}.petal{position:absolute;top:15%;left:86%;width:9px;height:15px;background:#c4a0d755;border-radius:90% 0 90% 0;pointer-events:none;animation:drift 12s ease-in-out 2}.petal.second{left:9%;top:38%;animation-delay:2s;width:7px;height:12px}@keyframes drift{0%,100%{transform:translate(0,0) rotate(10deg);opacity:.1}50%{transform:translate(-18px,60px) rotate(100deg);opacity:.6}}@media(min-width:650px){main{margin:24px auto 0;border-radius:8px;overflow:hidden}.rsvp{padding-left:42px;padding-right:42px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.petal{animation:none;display:none}.choice span{transition:none}}