@font-face {
  font-family:"Birthday STXingkai";
  src:url("./assets/STXINGKA.TTF") format("truetype");
  font-style:normal;
  font-weight:400;
  font-display:swap;
}

:root {
  --cream: #fff6e8;
  --paper: #fffaf2;
  --pink: #f4b9c4;
  --pink-deep: #df8799;
  --brown: #815640;
  --ink: #3d302b;
  --gold: #f4bd4b;
  --green: #8ca381;
  --shadow: 0 18px 45px rgba(105, 72, 51, 0.14);
}

* { box-sizing: border-box; }

html, body { margin: 0; width: 100%; min-height: 100%; background: #ead8c8; }

body {
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  overflow: hidden;
}

button { font: inherit; }

.story {
  position: relative;
  width: min(100%, 480px);
  height: 100vh;
  height: 100svh;
  margin: 0 auto;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 12%, rgba(255,255,255,.92) 0 2px, transparent 3px),
    radial-gradient(circle at 82% 30%, rgba(244,185,196,.32) 0 3px, transparent 4px),
    linear-gradient(155deg, #fffaf1 0%, #fff1df 100%);
  box-shadow: 0 0 80px rgba(79, 47, 31, .18);
  isolation: isolate;
}

.story::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .2;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.17'/%3E%3C/svg%3E");
  z-index: 20;
  mix-blend-mode: multiply;
}

.festival-splash {
  position: absolute;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: radial-gradient(circle at 50% 43%, #fff 0 25%, #fffaf2 72%, #ffece5 100%);
  opacity: 1;
  visibility: visible;
}
.festival-splash.hidden {
  opacity: 0 !important;
  visibility: hidden;
  pointer-events: none;
}
.festival-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.1s ease-in-out;
}
.festival-splash.is-ready .festival-image { opacity: 1; }
.festival-loader {
  position: absolute;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 10px;
  color: #815640;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .12em;
  visibility: visible;
  transition: opacity .7s ease .15s, visibility 0s linear .85s;
}
.festival-loader-image { display: block; width: 112px; height: 112px; object-fit: contain; }
.festival-splash.is-ready .festival-loader { opacity: 0; visibility: hidden; }
body.festival-open { background: #fffaf2; }
.festival-skip {
  --festival-progress: 0%;
  position: absolute;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 1;
  width: 50px;
  height: 50px;
  padding: 2px;
  border: 0;
  border-radius: 50%;
  color: #815640;
  background: conic-gradient(rgba(129,86,64,.56) var(--festival-progress), rgba(129,86,64,.18) 0);
  box-shadow: 0 2px 9px rgba(66, 44, 33, .12);
  cursor: pointer;
  visibility: hidden;
}
.festival-splash.is-ready .festival-skip {
  visibility: visible;
  color: #fff;
  background: conic-gradient(rgba(255,255,255,.7) var(--festival-progress), rgba(255,255,255,.25) 0);
  box-shadow: 0 2px 10px rgba(30, 40, 60, .14);
}
.festival-skip span {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(255, 250, 242, .72);
  backdrop-filter: blur(4px);
  font-size: 11px;
  font-weight: 500;
}
.festival-splash.is-ready .festival-skip span { background: rgba(31, 39, 54, .42); }
.festival-skip:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }
.festival-open .story > :not(.festival-splash) { visibility: hidden; }

/* 可配置的双入口首页 */
.entry-portal {
  position:absolute;
  inset:0;
  z-index:210;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:max(30px, env(safe-area-inset-top)) 22px max(30px, env(safe-area-inset-bottom));
  overflow:hidden;
  background:
    radial-gradient(circle at 12% 13%, rgba(255,255,255,.9) 0 2px, transparent 3px),
    radial-gradient(circle at 88% 22%, rgba(223,135,153,.32) 0 3px, transparent 4px),
    radial-gradient(circle at 18% 86%, rgba(244,189,75,.2) 0 4px, transparent 5px),
    linear-gradient(155deg,#fffaf2 0%,#ffe9dd 55%,#f8dce2 100%);
  opacity:1;
  visibility:visible;
  transition:opacity .45s ease, visibility .45s ease, transform .55s cubic-bezier(.2,.8,.2,1);
}
.entry-portal::before,
.entry-portal::after {
  content:"";
  position:absolute;
  border-radius:50%;
  pointer-events:none;
  filter:blur(2px);
}
.entry-portal::before { width:230px; height:230px; left:-112px; top:-82px; background:rgba(255,255,255,.42); }
.entry-portal::after { width:270px; height:270px; right:-145px; bottom:-100px; background:rgba(196,119,144,.12); }
.entry-portal.hidden { opacity:0 !important; visibility:hidden; transform:scale(1.025) !important; }
.entry-portal:not(.hidden) { transition-property:opacity,transform; }
.entry-portal-card {
  position:relative;
  z-index:1;
  width:100%;
  max-width:390px;
  padding:38px 20px 23px;
  border:1px solid rgba(255,255,255,.78);
  border-radius:34px;
  text-align:center;
  background:rgba(255,250,243,.73);
  box-shadow:0 24px 70px rgba(105,61,52,.16), inset 0 1px 0 rgba(255,255,255,.72);
  backdrop-filter:blur(16px);
  animation:entryPortalArrive .8s cubic-bezier(.18,.85,.22,1) both;
}
.entry-portal-kicker { display:block; margin-bottom:16px; color:#b56f7f; font:700 10px/1.2 ui-monospace,SFMono-Regular,monospace; letter-spacing:.2em; }
.entry-portal-badge {
  width:86px;
  height:86px;
  margin:0 auto 17px;
  padding:4px;
  overflow:hidden;
  border-radius:50%;
  background:#fff8ed;
  box-shadow:0 11px 25px rgba(104,62,48,.17), 0 0 0 7px rgba(255,255,255,.36);
}
.entry-portal-badge img { display:block; width:100%; height:100%; border-radius:50%; object-fit:cover; }
.entry-portal h1 { margin-bottom:8px; font-size:clamp(27px,7.5vw,35px); }
.entry-portal-card > p { margin-bottom:24px; color:rgba(61,48,43,.64); font-size:14px; }
.entry-portal-actions { display:grid; gap:12px; }
.entry-choice {
  position:relative;
  display:grid;
  grid-template-columns:46px 1fr 26px;
  align-items:center;
  gap:12px;
  width:100%;
  min-height:78px;
  padding:12px 14px;
  border:1px solid rgba(129,86,64,.11);
  border-radius:22px;
  text-align:left;
  color:var(--ink);
  background:rgba(255,255,255,.76);
  box-shadow:0 9px 24px rgba(104,62,48,.08);
  cursor:pointer;
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.entry-choice:hover { transform:translateY(-2px); box-shadow:0 13px 29px rgba(104,62,48,.14); }
.entry-choice:active { transform:translateY(0) scale(.985); }
.entry-choice-birthday:focus-visible { outline:3px solid rgba(223,135,153,.38); outline-offset:3px; }
.entry-choice-icon { display:grid; place-items:center; width:46px; height:46px; border-radius:16px; color:#fff; background:linear-gradient(145deg,#efafbc,#d8798e); font-size:25px; box-shadow:0 7px 17px rgba(185,91,112,.22); }
.entry-choice-icon svg { display:block; width:28px; height:28px; }
.entry-choice-birthday .entry-choice-icon svg { width:24px; height:24px; }
.entry-choice-secret .entry-choice-icon { background:linear-gradient(145deg,#777aa3,#4a4f79); box-shadow:0 7px 18px rgba(74,79,121,.22); }
.entry-choice-rainy .entry-choice-icon { background:linear-gradient(145deg,#718cb7,#526e9c); box-shadow:0 7px 18px rgba(55,78,116,.2); }
.entry-choice-copy { display:grid; gap:5px; min-width:0; }
.entry-choice-copy b { font:700 20px/1.15 "STKaiti","KaiTi","Microsoft YaHei",sans-serif; }
.entry-choice-copy small { color:rgba(61,48,43,.58); font-size:12px; line-height:1.35; }
.entry-choice-arrow { color:#b87a88; font-size:21px; transition:transform .22s ease; }
.entry-choice:hover .entry-choice-arrow { transform:translateX(3px); }
.entry-portal { overflow-y:auto; }
@media (max-height:680px) {
  .entry-portal { padding-top:16px; padding-bottom:16px; }
  .entry-portal-card { padding:20px 16px 18px; }
  .entry-portal-kicker { margin-bottom:10px; }
  .entry-portal-badge { width:60px; height:60px; margin-bottom:12px; }
  .entry-portal-card > p { margin-bottom:14px; }
  .entry-choice { min-height:66px; padding:9px 12px; }
}

/* 雨夜：图像和玻璃遮罩共用居中 cover 坐标。 */
.rainy-scene { position:absolute; inset:0; z-index:260; overflow:hidden; background:#102035; color:#eef4ff; visibility:visible; touch-action:none; }
.rainy-scene.hidden { visibility:hidden; pointer-events:none; }
.rainy-background { position:absolute; inset:0; width:100%; height:auto; object-fit:contain; object-position:center top; user-select:none; -webkit-user-select:none; -webkit-touch-callout:none; }
.rainy-light-blend { opacity:0; pointer-events:none; }
.rainy-bed-breath { position:absolute; pointer-events:none; mask-image:radial-gradient(ellipse at 50% 50%,#000 8%,rgba(0,0,0,.9) 35%,transparent 70%); -webkit-mask-image:radial-gradient(ellipse at 50% 50%,#000 8%,rgba(0,0,0,.9) 35%,transparent 70%); }
.rainy-bed-breath i { position:absolute; inset:0; background-image:var(--room-image); background-size:var(--room-image-width) var(--room-image-height); background-position:var(--bed-image-x) var(--bed-image-y); background-repeat:no-repeat; }
.rainy-bed-breath .rainy-bed-next { background-image:var(--room-next-image); opacity:0; }
.rainy-room-details { position:absolute; pointer-events:none; }
.rainy-room-details svg { display:block; width:100%; height:100%; }
.rainy-object-contact { opacity:.33; transition:opacity .9s ease-in-out; }
.rainy-sill-reflection { opacity:.10; transition:opacity .9s ease-in-out; }
.rainy-vase-matte { opacity:.08; transition:opacity .9s ease-in-out; }
.rainy-bed-contact { opacity:.20; transition:opacity .9s ease-in-out; }
.rainy-scene[data-light-target="1"] .rainy-object-contact { opacity:.42; }
.rainy-scene[data-light-target="1"] .rainy-sill-reflection { opacity:0; }
.rainy-scene[data-light-target="1"] .rainy-vase-matte { opacity:.11; }
.rainy-scene[data-light-target="1"] .rainy-bed-contact { opacity:.27; }
.rainy-scene[data-light-target="2"] .rainy-sill-reflection { opacity:.16; }
.rainy-scene[data-light-target="2"] .rainy-vase-matte { opacity:.06; }
.rainy-weather { position:absolute; inset:0; width:100%; height:100%; pointer-events:none; }
.rainy-photo-glass { position:absolute; pointer-events:none; clip-path:polygon(8.33% 0,100% 3.7%,93.75% 100%,0 95.06%); }
.rainy-photo-glass::before { content:""; position:absolute; inset:0; background:#73665b var(--photo-image) center / cover no-repeat; filter:brightness(.40) saturate(.7); transition:opacity .65s ease,filter .9s ease-in-out; }
.rainy-scene[data-photo-revealed="true"] .rainy-photo-glass::before { opacity:0; }
.rainy-scene[data-light-target="1"] .rainy-photo-glass::before { filter:brightness(.30) saturate(.55); }
.rainy-scene[data-light-target="2"] .rainy-photo-glass::before { filter:brightness(.51) saturate(.7); }
.rainy-scene.hidden .rainy-photo-glass::before { transition:none; }
.rainy-photo { position:absolute; padding:0; border:0; background:transparent; box-shadow:none; outline:none; appearance:none; -webkit-appearance:none; -webkit-tap-highlight-color:transparent; cursor:pointer; touch-action:manipulation; }
.rainy-photo[data-keyboard-focus="true"]:focus-visible { outline:2px solid #d7e9ff; outline-offset:2px; }
.rainy-lily { position:absolute; display:grid; place-items:center; padding:0; border:0; border-radius:12px; background:transparent; cursor:pointer; touch-action:manipulation; -webkit-tap-highlight-color:transparent; }
.rainy-lily[hidden] { display:none; }
.rainy-lily:focus-visible { outline:2px solid #e5c99e; outline-offset:3px; }
.rainy-lily-hint { position:absolute; bottom:calc(100% + 7px); right:0; padding:7px 10px; border:1px solid rgba(241,215,177,.18); border-radius:12px; color:#f4dfbf; background:rgba(29,27,34,.82); font-family:inherit; font-size:12px; line-height:1.5; white-space:nowrap; pointer-events:none; opacity:0; transition:opacity .5s; }
.rainy-lily.show-hint .rainy-lily-hint { opacity:1; }
@media (prefers-reduced-motion:reduce) { .rainy-lily-hint { transition:none; } }
.rainy-wish-panel { width:min(410px,calc(100% - 32px)); max-height:calc(100dvh - 32px); padding:30px 24px 20px; overflow:auto; overscroll-behavior:contain; box-sizing:border-box; border:1px solid rgba(230,199,158,.28); border-radius:24px; background:linear-gradient(155deg,#302d38,#191e2c); color:#f1dfc7; box-shadow:0 20px 70px rgba(0,0,0,.45); text-align:left; touch-action:auto; }
.rainy-wish-panel::backdrop { background:rgba(4,9,19,.68); backdrop-filter:blur(5px); }
.rainy-wish-close { position:absolute; top:10px; right:10px; width:44px; height:44px; padding:0; border:0; background:transparent; color:#d6c2ad; font-size:27px; cursor:pointer; }
.rainy-wish-kicker { margin:0 0 12px; color:#c6af90; font:10px/1.4 ui-monospace,monospace; letter-spacing:.16em; text-align:center; }
.rainy-wish-panel h2 { margin:0; font:400 27px/1.5 "STKaiti","KaiTi",serif; letter-spacing:.12em; text-align:center; }
.rainy-wish-intro { margin:10px 0 24px; font-size:12px; line-height:1.8; color:#c2b8b1; }
.rainy-wish-panel h2 + form { margin-top:28px; }
.rainy-wish-label { display:block; margin-bottom:10px; font-size:13px; }
.rainy-wish-panel textarea { display:block; width:100%; box-sizing:border-box; resize:vertical; min-height:130px; padding:13px; border:1px solid rgba(229,202,167,.25); border-radius:13px; color:#f1e2d0; background:rgba(7,12,23,.35); font-family:inherit; font-size:16px; line-height:1.8; touch-action:auto; }
.rainy-wish-panel textarea::placeholder { color:#999294; font-size:13px; }
.rainy-wish-count { margin:8px 0 16px; text-align:right; color:#a99d92; font-size:11px; }
.rainy-wish-submit { width:100%; min-height:48px; padding:12px; border:1px solid rgba(237,207,164,.32); border-radius:14px; background:#d7ba91; color:#302b32; font:inherit; cursor:pointer; }
.rainy-wish-submit:disabled { opacity:.6; cursor:wait; }
.rainy-wish-status { min-height:20px; margin:12px 0 0; color:#decdba; font-size:12px; line-height:1.7; }
.rainy-wish-status.error { color:#efb3ac; }
.rainy-wish-panel :focus-visible { outline:2px solid #e5c99e; outline-offset:3px; }
.rainy-lamp { position:absolute; padding:0; border:0; border-radius:12px; background:transparent; box-shadow:none; outline:none; appearance:none; -webkit-appearance:none; -webkit-tap-highlight-color:transparent; cursor:pointer; touch-action:manipulation; }
.rainy-lamp[data-keyboard-focus="true"]:focus-visible { outline:2px solid #d7e9ff; outline-offset:2px; }
.rainy-head { position:absolute; padding:0; border:0; background:transparent; outline:none; box-shadow:none; appearance:none; -webkit-appearance:none; -webkit-tap-highlight-color:transparent; clip-path:ellipse(50% 50% at 50% 50%); cursor:pointer; touch-action:manipulation; user-select:none; }
.rainy-head::after { content:""; position:absolute; inset:7%; border:2px solid transparent; border-radius:50%; pointer-events:none; }
.rainy-head[data-keyboard-focus="true"]:focus-visible::after { border-color:rgba(215,233,255,.8); }
.rainy-head-note { position:absolute; padding:5px 0; color:#fff; text-shadow:0 2px 6px rgba(18,13,20,.65); font:500 15px/1.25 Georgia,serif; letter-spacing:.08em; white-space:nowrap; transform:translate(-50%,-100%); pointer-events:none; }
.rainy-head-dialogue { padding:9px 13px; border:1px solid rgba(255,255,255,.12); border-radius:14px; background:rgba(41,33,40,.72); box-shadow:0 3px 14px rgba(18,13,20,.12); font-family:inherit; letter-spacing:.03em; }
.rainy-head-dialogue::after { content:""; position:absolute; bottom:-6px; left:50%; width:10px; height:10px; background:rgba(41,33,40,.72); border-right:1px solid rgba(255,255,255,.12); border-bottom:1px solid rgba(255,255,255,.12); transform:translateX(-50%) rotate(45deg); }
.rainy-vignette { position:absolute; inset:0; pointer-events:none; background:linear-gradient(180deg,rgba(4,12,25,.45),transparent 26%,transparent 74%,rgba(5,12,25,.24)); }
.rainy-controls { position:absolute; inset:0; transition:opacity 1.4s ease-in-out; pointer-events:none; }
.rainy-controls button,.rainy-controls input { pointer-events:auto; }
.rainy-heading { position:absolute; top:max(32px,env(safe-area-inset-top)); left:26px; right:26px; text-align:center; text-shadow:0 2px 15px rgba(0,0,0,.4); pointer-events:none; }
.rainy-heading > span { font:500 9px/1.2 ui-monospace,monospace; letter-spacing:.3em; color:rgba(221,235,255,.7); }
.rainy-heading h2 { margin:10px 0 5px; font:400 28px/1.4 "STKaiti","KaiTi",serif; letter-spacing:.16em; }
.rainy-heading p { margin:0; font-size:12px; letter-spacing:.08em; color:rgba(233,240,253,.76); }
.rainy-controls button { min-height:42px; padding:9px 14px; border:1px solid rgba(224,237,255,.2); border-radius:22px; background:rgba(15,30,47,.58); color:#e7f0ff; font-size:12px; backdrop-filter:blur(12px); cursor:pointer; }
.rainy-status { position:absolute; bottom:max(24px,calc(env(safe-area-inset-bottom) + 12px)); left:20px; right:20px; margin:0; text-align:center; font-size:12px; color:#eef4ff; text-shadow:0 2px 8px #15273d; pointer-events:none; }
.rainy-controls :focus-visible { outline:2px solid #d7e9ff; outline-offset:4px; }
.rainy-scene.is-idle .rainy-controls { opacity:0; }
.rainy-scene.is-idle .rainy-controls button,.rainy-scene.is-idle .rainy-controls input { pointer-events:none; }
.rainy-scene.is-idle .rainy-controls:has(:focus-visible) { opacity:1; }
.rainy-scene.is-idle .rainy-controls:has(:focus-visible) button,.rainy-scene.is-idle .rainy-controls:has(:focus-visible) input { pointer-events:auto; }
.rainy-open .story > :not(.rainy-scene) { visibility:hidden; }
.rainy-open { background:#102035; }
.rainy-open .story { width:100%; overflow:clip; }
.rainy-open .story::before { display:none; }
@media (orientation:landscape) {
  .rainy-background { height:100%; object-position:center; }
  .rainy-heading { left:100px; right:100px; }
}
@media (prefers-reduced-motion:reduce) {
  .rainy-controls { transition:none; }
  .rainy-photo-glass::before { transition:none; }
  .rainy-object-contact,.rainy-sill-reflection,.rainy-vase-matte,.rainy-bed-contact { transition:none; }
}
.portal-home-open .topbar,
.portal-secret-entry .topbar { opacity:0; visibility:hidden; pointer-events:none; }
.portal-secret-entry .final-scene,.rainy-unlock-screen { background:radial-gradient(circle at 50% 24%,#555477 0%,#252943 55%,#15192d 100%); }
.portal-secret-entry .final-scene > img,
.portal-secret-entry .final-overlay,
.portal-secret-entry .final-letter,
.portal-secret-entry .confetti { display:none; }
.portal-secret-entry .secret-close { display:none; }
.portal-secret-entry .secret-backdrop { background:rgba(13,16,31,.48); }

@keyframes entryPortalArrive {
  from { opacity:0; transform:translateY(22px) scale(.97); }
  to { opacity:1; transform:translateY(0) scale(1); }
}

.topbar {
  position: absolute;
  z-index: 80;
  top: max(18px, env(safe-area-inset-top));
  left: 22px;
  right: 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition:opacity .5s ease, visibility .5s ease;
}
.unlock-open .topbar { opacity:0; visibility:hidden; pointer-events:none; }

.progress { position:relative; flex:1; height:4px; overflow:hidden; border-radius:999px; background:rgba(84,56,43,.12); }
.progress > i { position:absolute; inset:0 auto 0 0; display:block; width:8%; height:100%; border-radius:inherit; background:var(--pink-deep); transition:width .65s cubic-bezier(.2,.8,.2,1); }
.progress-steps { display:none; }
.debug-scene-navigation .topbar { gap:12px; }
.progress.debug-navigation {
  height:24px;
  overflow:visible;
  border:1px solid rgba(129,86,64,.18);
  border-radius:999px;
  background:rgba(255,250,242,.78);
  box-shadow:0 5px 18px rgba(62,39,29,.12);
  backdrop-filter:blur(10px);
}
.progress.debug-navigation > i { z-index:0; background:linear-gradient(90deg,#e8a1b0,var(--pink-deep)); opacity:.9; }
.progress.debug-navigation .progress-steps { position:absolute; z-index:1; inset:0; display:grid; grid-template-columns:repeat(var(--scene-count),1fr); }
.progress-step {
  position:relative;
  display:grid;
  place-items:center;
  min-width:0;
  padding:0;
  border:0;
  border-right:1px solid rgba(91,59,44,.14);
  color:rgba(82,53,41,.58);
  background:transparent;
  font:700 10px/1 ui-monospace,SFMono-Regular,monospace;
  cursor:pointer;
  transition:color .2s ease,background .2s ease,transform .2s ease;
}
.progress-step:first-child { border-radius:999px 0 0 999px; }
.progress-step:last-child { border-right:0; border-radius:0 999px 999px 0; }
.progress-step:hover { background:rgba(255,255,255,.35); transform:translateY(-1px); }
.progress-step.is-passed { color:rgba(255,255,255,.88); text-shadow:0 1px 3px rgba(105,52,65,.3); }
.progress-step[aria-current="step"] { color:#fff; background:rgba(255,255,255,.18); box-shadow:inset 0 0 0 2px rgba(255,255,255,.7); text-shadow:0 1px 4px rgba(94,45,57,.4); }
.progress-step:focus-visible { z-index:2; outline:3px solid rgba(223,135,153,.38); outline-offset:3px; border-radius:999px; }

.sound-button {
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid rgba(83, 55, 42, .13);
  background: rgba(255, 250, 242, .78); color: var(--brown); box-shadow: 0 5px 20px rgba(87, 54, 38, .08);
  cursor: pointer; backdrop-filter: blur(8px);
}
.sound-button.playing { animation:musicSpin 3s linear infinite; background:var(--pink); color:#fff; }

.ambient { position: absolute; inset: 0; z-index: 1; pointer-events: none; color: rgba(218, 127, 146, .45); }
.ambient span { position: absolute; animation: float 4s ease-in-out infinite; }
.ambient span:nth-child(1) { left: 8%; top: 18%; font-size: 24px; }
.ambient span:nth-child(2) { right: 9%; top: 15%; font-size: 26px; animation-delay: -.8s; }
.ambient span:nth-child(3) { right: 14%; bottom: 20%; font-size: 20px; animation-delay: -1.7s; }
.ambient span:nth-child(4) { left: 8%; bottom: 28%; font-size: 45px; animation-delay: -2.2s; }
.ambient span:nth-child(5) { left: 20%; top: 53%; font-size: 18px; animation-delay: -1.2s; }

.scene {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: max(78px, calc(env(safe-area-inset-top) + 60px)) 28px max(28px, env(safe-area-inset-bottom));
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(28px) scale(.98);
  transition: opacity .55s ease, transform .7s cubic-bezier(.2,.8,.2,1), visibility .55s;
}
.scene.active { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.scene.leaving { opacity: 0; transform: translateY(-22px) scale(1.015); }

.eyebrow { margin-bottom: 20px; color: var(--pink-deep); font: 700 11px/1.2 ui-monospace, SFMono-Regular, monospace; letter-spacing: .18em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: "STKaiti", "KaiTi", "Microsoft YaHei", sans-serif; }
h1 { margin-bottom: 18px; font-size: clamp(30px, 8vw, 42px); line-height: 1.28; font-weight: 700; }
h2 { margin-bottom: 14px; font-size: clamp(28px, 7.5vw, 38px); line-height: 1.32; }
.hint { color: rgba(61,48,43,.66); font-size: 15px; line-height: 1.7; }

.parcel {
  position: relative;
  width: min(76vw, 310px);
  aspect-ratio: 1.28;
  border: 2px solid rgba(129, 86, 64, .34);
  border-radius: 9px;
  background: #f4dcc0;
  box-shadow: var(--shadow), inset 0 0 0 8px rgba(255,255,255,.25);
  transform: rotate(-3deg);
  animation: parcelIn 1s cubic-bezier(.2,.85,.2,1) both, hover 3.2s 1s ease-in-out infinite;
}
.parcel::before, .parcel::after { content:""; position:absolute; top:0; bottom:0; left:50%; width:26px; transform:translateX(-50%); background:#e9a2ae; opacity:.9; }
.parcel::after { top:50%; left:0; right:0; bottom:auto; width:auto; height:26px; transform:translateY(-50%); }
.parcel-stamp { position:absolute; z-index:2; left:50%; top:50%; display:grid; place-items:center; width:64px; height:64px; transform:translate(-50%,-50%); border-radius:50%; background:#c76f7f; color:white; font-size:34px; box-shadow:0 6px 15px rgba(120,60,72,.24); }
.parcel-label { position:absolute; z-index:2; right:16px; bottom:14px; padding:7px 12px; border:1px dashed rgba(90,62,45,.35); background:#fff9ec; font-family:"KaiTi", serif; transform:rotate(2deg); }
.cover-copy { margin-top: 38px; }
.cover-copy p { font-size: 17px; letter-spacing: .03em; }

.primary-button, .ghost-button {
  min-width: 166px;
  min-height: 48px;
  padding: 13px 24px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  color: #fff;
  background: var(--brown);
  box-shadow: 0 10px 24px rgba(101, 64, 46, .2);
  transition: transform .2s ease, opacity .3s ease, box-shadow .2s ease;
}
.primary-button:active, .ghost-button:active { transform: scale(.96); box-shadow: 0 4px 12px rgba(101,64,46,.16); }
.hidden { opacity: 0 !important; pointer-events: none !important; transform: translateY(8px) !important; }

.scene-illustration, .final-scene { padding: 0; justify-content: flex-end; overflow: hidden; }
.scene-illustration > img, .final-scene > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.scene-illustration::after { content:""; position:absolute; inset:0; background:linear-gradient(to bottom, rgba(255,246,232,.02) 34%, rgba(53,35,27,.05) 50%, rgba(36,24,20,.72) 100%); }
.story-card { position: relative; z-index: 3; width: calc(100% - 36px); margin-bottom: max(18px, env(safe-area-inset-bottom)); padding: 25px 20px; border: 1px solid rgba(255,255,255,.48); border-radius: 22px; text-align: left; color: #fff; background: rgba(74, 48, 37, .5); backdrop-filter: blur(10px); box-shadow: 0 14px 38px rgba(37,23,17,.2); }
.story-card p { margin-bottom: 6px; color: rgba(255,255,255,.84); font-size: 13px; }
.story-card h1,
.story-card h2 { margin-bottom: 14px; }
.story-card h2 { font-size: clamp(20px, 5.4vw, 26px); line-height: 1.22; }
.story-card .primary-button { min-width: 132px; min-height: 42px; padding: 10px 18px; background: #fff5e8; color: var(--brown); box-shadow: none; font-size: 13px; }
.story-number { float:right; padding-top:4px; font:700 12px ui-monospace, monospace; color:var(--pink); }

.collect-grid { width: 100%; display: grid; gap: 12px; margin: 16px 0 18px; }
.collect-item { position:relative; display:grid; grid-template-columns:58px 1fr; grid-template-rows:auto auto; column-gap:13px; align-items:center; width:100%; padding:15px 17px; border:1px solid rgba(129,86,64,.12); border-radius:20px; color:var(--ink); text-align:left; background:rgba(255,255,255,.66); box-shadow:0 8px 24px rgba(100,67,47,.07); cursor:pointer; transition:transform .24s ease, background .24s ease, border-color .24s ease; }
.collect-item span { grid-row:1 / 3; display:grid; place-items:center; width:54px; height:54px; border-radius:17px; background:#fff3df; font-size:31px; }
.collect-item b { align-self:end; font-size:16px; }
.collect-item small { align-self:start; margin-top:3px; color:rgba(61,48,43,.57); font-size:12px; }
.collect-item.collected { transform:scale(.98); background:#fff; border-color:var(--pink); }
.collect-item.collected::after { content:"✓"; position:absolute; right:17px; top:17px; display:grid; place-items:center; width:24px; height:24px; border-radius:50%; color:white; background:var(--pink-deep); font-weight:800; }
.collect-status { margin-bottom:16px; color:var(--pink-deep); font-weight:700; font-size:14px; }

.memory-stack { position:relative; width:100%; height:300px; margin:18px 0 8px; perspective:1000px; }
.memory-reveal { position:absolute; z-index:0; inset:0; display:block; width:100%; height:100%; object-fit:cover; border:1px solid rgba(255,255,255,.7); border-radius:28px; box-shadow:var(--shadow); opacity:0; filter:blur(8px); transform:scale(.94); }
.memory-reveal.revealed { animation:memoryLandscapeReveal 1.25s cubic-bezier(.2,.8,.2,1) .18s both; }
.memory-mist { position:absolute; z-index:4; inset:0; overflow:hidden; border-radius:28px; opacity:0; visibility:hidden; pointer-events:none; }
.memory-mist::after { content:""; position:absolute; inset:-15%; background:radial-gradient(circle at 50% 52%,rgba(255,255,255,.96),rgba(244,250,244,.7) 42%,rgba(239,247,241,.2) 72%,transparent); filter:blur(8px); }
.memory-mist i { position:absolute; z-index:1; top:-18%; bottom:-18%; width:72%; filter:blur(2px) drop-shadow(0 8px 16px rgba(91,122,92,.12)); }
.memory-mist i::before,
.memory-mist i::after { content:""; position:absolute; border-radius:50%; background:rgba(255,255,255,.94); box-shadow:0 0 24px rgba(255,255,255,.72); }
.memory-mist i:first-child { left:-15%; background:radial-gradient(circle at 28% 28%,#fff 0 24%,transparent 25%),radial-gradient(circle at 60% 45%,rgba(255,255,255,.96) 0 32%,transparent 33%),radial-gradient(circle at 22% 76%,rgba(247,251,246,.96) 0 31%,transparent 32%); }
.memory-mist i:first-child::before { left:14%; top:29%; width:68%; height:43%; }
.memory-mist i:first-child::after { left:2%; top:54%; width:73%; height:38%; }
.memory-mist i:last-child { right:-15%; background:radial-gradient(circle at 72% 27%,#fff 0 25%,transparent 26%),radial-gradient(circle at 40% 46%,rgba(255,255,255,.96) 0 33%,transparent 34%),radial-gradient(circle at 78% 77%,rgba(247,251,246,.96) 0 31%,transparent 32%); }
.memory-mist i:last-child::before { right:13%; top:28%; width:69%; height:44%; }
.memory-mist i:last-child::after { right:1%; top:54%; width:74%; height:38%; }
.memory-stack.revealing .memory-mist { visibility:visible; animation:memoryMistFade 1.4s ease both; }
.memory-stack.revealing .memory-mist i:first-child { animation:memoryMistPartLeft 1.28s cubic-bezier(.3,.02,.2,1) .12s both; }
.memory-stack.revealing .memory-mist i:last-child { animation:memoryMistPartRight 1.28s cubic-bezier(.3,.02,.2,1) .12s both; }
.memory-card { position:absolute; inset:0; display:flex; flex-direction:column; justify-content:center; padding:27px; border:1px solid rgba(255,255,255,.64); border-radius:28px; text-align:center; color:white; box-shadow:var(--shadow); cursor:grab; touch-action:pan-y; user-select:none; transition:transform .45s cubic-bezier(.2,.8,.2,1), opacity .35s ease; }
.memory-card:active { cursor:grabbing; }
.memory-card span { position:absolute; left:50%; top:25px; transform:translateX(-50%); font:700 12px ui-monospace, monospace; letter-spacing:.18em; opacity:.7; }
.memory-card h3 { margin-bottom:9px; font:700 27px/1.2 "KaiTi", serif; }
.memory-card p { margin:0; font-size:15px; line-height:1.75; color:rgba(255,255,255,.86); }
.card-one { background:linear-gradient(145deg,#cdbce0,#9f87bb); transform:rotate(-2deg); z-index:3; }
.card-two { background:linear-gradient(145deg,#9aae8e,#73866b); transform:rotate(3deg) translateY(7px); z-index:2; }
.card-three { background:linear-gradient(145deg,#e4a4b5,#bd7188); transform:rotate(-1deg) translateY(14px); z-index:1; }
.memory-card.dismissed-left { transform:translateX(-125%) rotate(-14deg); opacity:0; }
.memory-card.dismissed-right { transform:translateX(125%) rotate(14deg); opacity:0; }
.swipe-tip { position:relative; z-index:4; margin-top:12px; color:rgba(61,48,43,.54); font-size:13px; }

@keyframes memoryLandscapeReveal {
  0% { opacity:0; filter:blur(8px); transform:scale(.94); }
  35% { opacity:.78; }
  100% { opacity:1; filter:blur(0); transform:scale(1); }
}
@keyframes memoryMistFade {
  0% { opacity:0; visibility:visible; }
  13%, 68% { opacity:1; visibility:visible; }
  100% { opacity:0; visibility:hidden; }
}
@keyframes memoryMistPartLeft {
  0%, 18% { transform:translateX(0) scale(1.06); }
  100% { transform:translateX(-112%) scale(.94); }
}
@keyframes memoryMistPartRight {
  0%, 18% { transform:translateX(0) scale(1.06); }
  100% { transform:translateX(112%) scale(.94); }
}
.cake-wrap { position:relative; display:grid; place-items:center; width:100%; height:300px; margin:4px 0 8px; }
.cake-glow { position:absolute; z-index:2; width:230px; height:230px; border-radius:50%; background:radial-gradient(circle, rgba(255,211,103,.45), rgba(255,211,103,0) 70%); opacity:.15; pointer-events:none; transform:scale(.7); transition:opacity 1.3s ease,transform 1.6s cubic-bezier(.2,.8,.2,1); }
.cake-wrap.lit .cake-glow { opacity:1; transform:scale(1.5); }
.cake-emoji { font-size:116px; filter:drop-shadow(0 18px 22px rgba(99,60,40,.18)); transform:translateY(20px); }
.wish-lights { position:absolute; z-index:6; inset:0; pointer-events:none; }
.wish-lights button { position:absolute; width:52px; height:52px; border:0; color:#c5ac78; background:transparent; font-size:40px; cursor:pointer; pointer-events:auto; transition:color .3s ease,opacity .3s ease,text-shadow .3s ease; }
.wish-lights button:nth-child(1) { right:3%; top:calc(33% - 10px); }
.wish-lights button:nth-child(2) { left:7%; top:max(76px, calc(env(safe-area-inset-top) + 62px)); }
.wish-lights button:nth-child(3) { left:3%; top:73%; }
.wish-lights button:disabled:not(.on) { opacity:.38; cursor:default; }
.wish-lights button.is-ready { color:#d5b56f; animation:wishStarHint 1.55s ease-in-out infinite; }
.wish-lights button.on { color:var(--gold); transform:scale(1.2) rotate(12deg); text-shadow:0 0 18px rgba(244,189,75,.75); }
.candle-scene.lighting .wish-lights button {
  pointer-events:none;
  animation:wishStarFall 1.35s cubic-bezier(.45,.02,.32,1) both;
}
.candle-scene.lighting .wish-lights button:nth-child(1) { animation-delay:0s; }
.candle-scene.lighting .wish-lights button:nth-child(2) { animation-delay:.22s; }
.candle-scene.lighting .wish-lights button:nth-child(3) { animation-delay:.44s; }

.wish-scene { color:white; background:radial-gradient(circle at 50% 48%, #664235 0%, #392820 48%, #211712 100%); }
.light-text { color:#fff6df; }
.wish-scene .eyebrow { color:#f3c982; }
.big-candle { position:relative; display:flex; flex-direction:column; align-items:center; justify-content:flex-end; width:190px; height:260px; margin:20px 0; cursor:pointer; outline:none; user-select:none; -webkit-user-select:none; -webkit-touch-callout:none; touch-action:none; }
.big-candle * { user-select:none; -webkit-user-select:none; -webkit-user-drag:none; -webkit-touch-callout:none; pointer-events:none; }
.flame { position:absolute; top:16px; z-index:2; font-size:72px; filter:drop-shadow(0 0 24px rgba(255,191,73,.75)); animation:flicker .85s ease-in-out infinite alternate; transition:.45s ease; }
.candle-stick { width:52px; height:130px; border-radius:14px 14px 9px 9px; background:repeating-linear-gradient(45deg,#f8d9dd 0 12px,#fff8ed 12px 24px); box-shadow:inset -9px 0 12px rgba(117,67,64,.09),0 15px 30px rgba(0,0,0,.2); }
.hold-ring { position:absolute; inset:0; border:3px solid rgba(255,226,165,.24); border-radius:50%; transform:scale(.84); opacity:0; }
.big-candle.holding .hold-ring { opacity:1; animation:hold 1.4s linear forwards; }
.big-candle.out .flame { opacity:0; transform:translateY(-15px) scale(.3); }
.hold-tip { min-height:26px; color:rgba(255,246,223,.75); font-size:14px; }
.wish-scene .primary-button { background:#fff0cf; color:#5b3b2d; }
.card-unseal {
  position:absolute;
  inset:0;
  z-index:20;
  display:grid;
  place-items:center;
  overflow:hidden;
  pointer-events:none;
  visibility:hidden;
  opacity:0;
  background:radial-gradient(circle at 50% 52%,rgba(255,226,179,.16),rgba(9,6,5,.48) 78%);
  backdrop-filter:blur(2px);
  transition:opacity .36s ease,visibility .36s ease;
}
.card-unseal.active { visibility:visible; opacity:1; }
.card-envelope {
  position:relative;
  isolation:isolate;
  width:min(76vw,292px);
  height:330px;
  perspective:1100px;
  opacity:0;
  transform:translateY(25px) scale(.94);
}
.card-unseal.active .card-envelope { animation:cardEnvelopeIn .46s cubic-bezier(.2,.8,.2,1) both; }
.card-envelope-back {
  position:absolute;
  z-index:1;
  left:0;
  right:0;
  bottom:26px;
  height:170px;
  border:1px solid rgba(116,75,51,.16);
  border-radius:9px 9px 14px 14px;
  background:linear-gradient(145deg,#f9ead6,#e8c7a5);
  box-shadow:0 22px 48px rgba(0,0,0,.25);
}
.card-envelope-letter {
  position:absolute;
  z-index:2;
  left:6%;
  bottom:43px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  width:88%;
  height:206px;
  padding:22px 17px 16px;
  border:1px solid rgba(186,119,129,.24);
  border-radius:17px;
  color:#765044;
  background:rgba(255,249,238,.98);
  box-shadow:0 15px 34px rgba(76,43,31,.2);
  opacity:0;
  transform:translateY(17px) scale(.94);
}
.card-envelope-letter::before {
  content:"";
  position:absolute;
  inset:10px;
  border:1px solid rgba(218,150,164,.22);
  border-radius:12px;
}
.card-envelope-badge { position:relative; width:54px; height:54px; margin-bottom:9px; overflow:hidden; border:3px solid #fff; border-radius:50%; box-shadow:0 5px 14px rgba(99,60,40,.16); }
.card-envelope-badge img { width:100%; height:100%; object-fit:cover; transform:scale(1.28); }
.card-envelope-letter span { position:relative; color:#80665b; font-size:11px; line-height:1.3; }
.card-envelope-letter b { position:relative; margin-top:5px; color:#5b4035; font:700 27px/1.2 "STKaiti","KaiTi",serif; }
.card-envelope-letter small { position:relative; margin-top:7px; color:#9a8175; font:11px/1.3 "KaiTi",serif; }
.card-unseal.active .card-envelope-letter { animation:cardLetterRise 1.35s cubic-bezier(.18,.78,.2,1) .88s both; }
.card-envelope-flap {
  position:absolute;
  z-index:5;
  left:0;
  right:0;
  bottom:106px;
  height:91px;
  background:linear-gradient(155deg,#f7e3ca,#e7c29e);
  clip-path:polygon(0 0,100% 0,50% 100%);
  transform:rotateX(0deg);
  transform-origin:top center;
  backface-visibility:visible;
}
.card-envelope-flap::after { content:"♡"; position:absolute; left:50%; top:20px; color:#c87888; font-size:24px; transform:translateX(-50%); }
.card-unseal.active .card-envelope-flap { animation:cardFlapOpen .62s cubic-bezier(.4,0,.2,1) .25s both,cardEnvelopeFade .32s ease 1.82s forwards; }
.card-envelope-front {
  position:absolute;
  z-index:4;
  left:0;
  right:0;
  bottom:26px;
  height:170px;
  border-radius:0 0 12px 12px;
  background:linear-gradient(150deg,#f4dcc0,#e5bd96);
  clip-path:polygon(0 0,50% 47%,100% 0,100% 100%,0 100%);
}
.card-unseal.active .card-envelope-back,
.card-unseal.active .card-envelope-front { animation:cardEnvelopeAway .32s ease 1.9s forwards; }
.card-envelope-front::after {
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(35deg,rgba(255,255,255,.24),transparent 43%,rgba(126,76,48,.06));
  clip-path:inherit;
}

.final-scene { justify-content:center; }
.final-scene > .final-scene-base { opacity:0; transform:scale(1.1); }
.final-scene.active > .final-scene-base { animation:finalBackdropReveal 4.2s cubic-bezier(.2,.72,.2,1) both; }
.final-lyrics {
  position:absolute;
  z-index:2;
  top:7.2%;
  left:calc(48% + 3em);
  width:46%;
  color:#936247;
  font:400 clamp(13px,3.7vw,18px)/1.55 "Birthday STXingkai","STXingkai","FZShuTi","STKaiti","KaiTi",serif;
  letter-spacing:.06em;
  text-align:left;
  text-shadow:0 1px 1px rgba(255,255,255,.32);
  pointer-events:none;
}
.final-lyrics span {
  display:block;
  width:max-content;
  max-width:100%;
  overflow:hidden;
  white-space:nowrap;
  opacity:0;
  clip-path:inset(0 100% 0 0);
  filter:blur(1.8px);
}
.final-scene.active .final-lyrics span {
  animation:finalLyricWrite 1.05s steps(var(--chars),end) both;
}
.final-scene.active .final-lyrics span:nth-child(1) { animation-delay:.35s; }
.final-scene.active .final-lyrics span:nth-child(2) { animation-delay:1.17s; }
.final-scene.active .final-lyrics span:nth-child(3) { animation-delay:1.99s; }
.final-scene.active .final-lyrics span:nth-child(4) { animation-delay:2.81s; }
.final-scene.active .final-lyrics span:nth-child(5) { animation-delay:3.63s; }
.final-scene.active .final-lyrics span:nth-child(6) { animation-delay:4.45s; }
.final-scene.active .final-lyrics span:nth-child(7) { animation-delay:5.27s; }
.final-scene.active .final-lyrics span:nth-child(8) { animation-delay:6.09s; }
.final-overlay { position:absolute; inset:0; background:linear-gradient(rgba(48,30,22,.14),rgba(48,30,22,.5)); }
.final-letter { position:relative; z-index:4; width:calc(100% - 40px); padding:33px 25px 27px; border:1px solid rgba(255,255,255,.62); border-radius:30px; background:rgba(255,249,238,.88); box-shadow:0 25px 60px rgba(38,24,18,.26); backdrop-filter:blur(14px); opacity:0; transform:scale(.96); }
.final-scene.active .final-letter { animation:finalCardArrive .72s cubic-bezier(.18,.8,.2,1) both; }
.tiny-heart { margin-bottom:15px; color:var(--pink-deep); font-size:31px; }
.final-letter p { margin-bottom:22px; font-size:16px; line-height:1.9; color:#695249; }
.final-letter h2 { margin-bottom:18px; font-size:clamp(31px,8.5vw,43px); }
.final-letter em { color:var(--pink-deep); font-style:normal; }
.signature { display:block; margin-bottom:24px; color:#8a7166; font:14px/1.6 "KaiTi",serif; }
.ghost-button { min-width:130px; min-height:43px; padding:10px 20px; color:var(--brown); background:transparent; border:1px solid rgba(129,86,64,.26); box-shadow:none; }
.confetti { position:absolute; inset:0; overflow:hidden; pointer-events:none; z-index:3; }
.confetti i { position:absolute; top:-20px; width:9px; height:14px; border-radius:3px; animation:confettiFall var(--d) linear var(--delay) infinite; }

@keyframes parcelIn { from { opacity:0; transform:translateY(70px) rotate(-8deg) scale(.78); } to { opacity:1; transform:translateY(0) rotate(-3deg) scale(1); } }
@keyframes hover { 50% { transform:translateY(-7px) rotate(-1deg); } }
@keyframes float { 50% { transform:translateY(-9px) rotate(10deg); } }
@keyframes musicSpin { to { transform:rotate(360deg); } }
@keyframes flicker { from { transform:rotate(-3deg) scale(.96); } to { transform:rotate(4deg) scale(1.05); } }
@keyframes hold { from { transform:scale(.84); border-color:rgba(255,226,165,.28); } to { transform:scale(.56); border-color:#ffd671; } }
@keyframes confettiFall { to { transform:translate3d(var(--x),110vh,0) rotate(560deg); } }
@keyframes finalBackdropReveal {
  0% { opacity:0; transform:scale(1.1); filter:brightness(.88) saturate(.9); }
  30% { opacity:1; }
  100% { opacity:1; transform:scale(1.06); filter:brightness(1) saturate(1); }
}
@keyframes finalLyricWrite {
  0% { opacity:0; clip-path:inset(0 100% 0 0); filter:blur(1.8px); }
  8% { opacity:1; }
  82% { filter:blur(.35px); }
  100% { opacity:1; clip-path:inset(0 0 0 0); filter:blur(0); }
}
@keyframes cardEnvelopeIn { to { opacity:1; transform:translateY(0) scale(1); } }
@keyframes cardFlapOpen {
  0%, 18% { z-index:5; transform:rotateX(0deg); }
  49% { z-index:5; transform:rotateX(-89deg); }
  50% { z-index:1; transform:rotateX(-91deg); }
  100% { z-index:1; transform:rotateX(-180deg); }
}
@keyframes cardLetterRise {
  0% { opacity:0; transform:translateY(17px) scale(.94); }
  10% { opacity:1; transform:translateY(17px) scale(.94); }
  70% { opacity:1; transform:translateY(-78px) scale(1); }
  100% { opacity:1; transform:translateY(-68px) scale(1.12); }
}
@keyframes cardEnvelopeAway { to { opacity:0; transform:translateY(18px) scale(.96); } }
@keyframes cardEnvelopeFade { to { opacity:0; } }
@keyframes finalCardArrive {
  from { opacity:0; transform:scale(.96); }
  to { opacity:1; transform:translateY(0) scale(1); }
}

@media (max-height: 720px) {
  .scene { padding-top: 64px; padding-bottom: 18px; }
  h2 { font-size: 27px; }
  .story-card { margin-bottom:max(12px, env(safe-area-inset-bottom)); padding:22px 18px 21px; }
  .story-card p { margin-bottom:5px; font-size:12px; }
  .story-card h2 { margin-bottom:11px; font-size:19px; line-height:1.18; }
  .story-card .primary-button { min-height:38px; padding:8px 17px; font-size:12px; }
  .collect-grid { gap:8px; margin:8px 0 10px; }
  .collect-item { padding:10px 14px; }
  .collect-item span { width:47px; height:47px; font-size:27px; }
  .memory-stack { height:250px; margin-top:8px; }
  .swipe-tip { margin-top:8px; }
  .cake-wrap { height:250px; margin:-4px 0; }
  .wish-lights button:nth-child(1) { top:calc(35% - 10px); }
  .wish-lights button:nth-child(3) { top:72%; }
  .big-candle { height:220px; margin:5px 0; transform:scale(.85); }
  .final-letter { padding:25px 22px 21px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}

/* 一二布布角色元素 */
.parcel-stamp {
  overflow: hidden;
  padding: 0;
  border: 4px solid #fff8ed;
  background: #fff8ed;
}
.parcel-stamp img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.35); }

.mascot-peek {
  position: absolute;
  top: 82px;
  z-index: 0;
  width: 78px;
  height: 78px;
  overflow: hidden;
  border: 4px solid rgba(255,255,255,.88);
  border-radius: 50%;
  background: var(--cream);
  box-shadow: 0 9px 24px rgba(105,72,51,.13);
  pointer-events: none;
}
.mascot-peek img { position: absolute; top: 0; width: 205%; max-width: none; }
.mascot-bubu { left: -21px; transform: rotate(-10deg); }
.mascot-bubu img { left: -8%; }
.mascot-yier { right: -21px; transform: rotate(10deg); }
.mascot-yier img { left: -99%; }

.birthday-art-frame {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 28px;
  background: #fffdf4;
  box-shadow: 0 18px 32px rgba(100,67,47,.16);
}
.birthday-art-frame img {
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  transition:opacity .75s ease,transform 1s cubic-bezier(.2,.8,.2,1),filter .85s ease;
}
.birthday-art-unlit { opacity:1; transform:scale(1); }
.birthday-art-lit { opacity:0; transform:scale(.965); filter:brightness(1.35) saturate(1.12); }
.cake-wrap.lit .birthday-art-unlit { opacity:0; transform:scale(1.035); }
.cake-wrap.lit .birthday-art-lit {
  opacity:1;
  transform:scale(1);
  filter:brightness(1) saturate(1);
  animation:birthdayArtLightUp 1.6s cubic-bezier(.2,.8,.2,1) both;
}
.birthday-art-frame::after {
  content:"";
  position:absolute;
  z-index:2;
  inset:-25%;
  pointer-events:none;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,247,190,.94) 0%,rgba(255,214,94,.42) 24%,rgba(255,211,103,0) 65%);
  opacity:0;
  transform:scale(.25);
}
.cake-wrap.lit .birthday-art-frame::after { animation:candleIgnitionFlash 1.35s ease-out both; }
.candle-sparkles { position:absolute; z-index:3; inset:0; pointer-events:none; }
.candle-sparkles i {
  --spark-x:0px;
  --spark-y:-52px;
  position:absolute;
  left:50%;
  top:46%;
  width:7px;
  height:7px;
  border-radius:50%;
  background:#fff6a8;
  box-shadow:0 0 8px 2px rgba(255,193,51,.8);
  opacity:0;
}
.candle-sparkles i:nth-child(1) { --spark-x:-58px; --spark-y:-44px; }
.candle-sparkles i:nth-child(2) { --spark-x:-31px; --spark-y:-72px; animation-delay:.06s; }
.candle-sparkles i:nth-child(3) { --spark-x:3px; --spark-y:-82px; animation-delay:.12s; }
.candle-sparkles i:nth-child(4) { --spark-x:39px; --spark-y:-66px; animation-delay:.09s; }
.candle-sparkles i:nth-child(5) { --spark-x:62px; --spark-y:-34px; animation-delay:.16s; }
.candle-sparkles i:nth-child(6) { --spark-x:18px; --spark-y:-42px; animation-delay:.2s; }
.cake-wrap.lit .candle-sparkles i { animation:candleSparkleBurst 1.25s cubic-bezier(.12,.72,.2,1) both; }

@keyframes wishStarFall {
  0% { opacity:1; transform:translate(0,0) scale(1.2) rotate(12deg); filter:brightness(1); }
  18% { opacity:1; transform:translate(0,-18px) scale(1.35) rotate(-8deg); filter:brightness(1.15); }
  72% { opacity:1; transform:translate(var(--star-drop-x),calc(var(--star-drop-y) - 7px)) scale(.82) rotate(210deg); filter:brightness(1.35); }
  88% { opacity:1; transform:translate(var(--star-drop-x),var(--star-drop-y)) scale(.58) rotate(260deg); filter:brightness(1.8); }
  100% { opacity:0; transform:translate(var(--star-drop-x),var(--star-drop-y)) scale(.05) rotate(290deg); filter:brightness(2); }
}
@keyframes wishStarHint {
  0%, 100% { transform:scale(1) rotate(-5deg); text-shadow:0 0 5px rgba(244,189,75,.22); }
  50% { transform:scale(1.13) rotate(7deg); text-shadow:0 0 16px rgba(244,189,75,.62); }
}

@keyframes birthdayArtLightUp {
  0% { opacity:0; transform:scale(.965); filter:brightness(1.45) saturate(1.15); }
  42% { opacity:1; transform:scale(1.025); filter:brightness(1.22) saturate(1.08); }
  100% { opacity:1; transform:scale(1); filter:brightness(1) saturate(1); }
}
@keyframes candleIgnitionFlash {
  0% { opacity:0; transform:scale(.25); }
  28% { opacity:.95; }
  100% { opacity:0; transform:scale(1.18); }
}
@keyframes candleSparkleBurst {
  0% { opacity:0; transform:translate(-50%,-50%) scale(.2); }
  22% { opacity:1; }
  100% { opacity:0; transform:translate(calc(-50% + var(--spark-x)),calc(-50% + var(--spark-y))) scale(.05); }
}

.final-character-badge {
  width: 82px;
  height: 82px;
  margin: -76px auto 16px;
  overflow: hidden;
  border: 5px solid #fff8ed;
  border-radius: 50%;
  background: #fff8ed;
  box-shadow: 0 9px 22px rgba(85,52,38,.2);
}
.final-character-badge img { width:100%; height:100%; object-fit:cover; }
.final-actions { display:flex; justify-content:center; flex-wrap:wrap; gap:10px; }
.secret-button {
  min-height:43px;
  padding:10px 18px;
  border:0;
  border-radius:999px;
  color:#fff;
  background:var(--pink-deep);
  box-shadow:0 8px 20px rgba(176,90,109,.22);
  cursor:pointer;
}

/* 暗号与秘密录音 */
.secret-backdrop {
  position:absolute;
  inset:0;
  z-index:100;
  background:rgba(38,24,18,.5);
  backdrop-filter:blur(5px);
  transition:opacity .5s ease, visibility .5s ease;
}
.secret-panel {
  position:absolute;
  z-index:101;
  left:16px;
  right:16px;
  bottom:max(14px, env(safe-area-inset-bottom));
  padding:27px 22px 22px;
  border:1px solid rgba(255,255,255,.72);
  border-radius:30px;
  color:var(--ink);
  background:rgba(255,250,241,.97);
  box-shadow:0 24px 70px rgba(35,21,16,.35);
  backdrop-filter:blur(18px);
  transition:transform .38s cubic-bezier(.2,.8,.2,1), opacity .3s ease, visibility .3s ease;
}
.secret-backdrop.hidden { visibility:hidden; opacity:0 !important; }
.secret-panel.hidden { visibility:hidden; opacity:0 !important; transform:translateY(110%) !important; }
.rainy-unlock-screen { position:fixed; inset:0; width:min(100%,480px); height:100svh; margin-inline:auto; z-index:400; text-align:center; overflow:hidden; }
.rainy-unlock-screen.hidden { visibility:hidden; pointer-events:none; }
.rainy-unlock-backdrop { background:rgba(13,16,31,.48); }
.rainy-unlock-panel .secret-close { display:none; }
.unlock-transition.rainy-transition { position:fixed; inset:0; z-index:500; background:#000; outline:none; visibility:visible; opacity:1; pointer-events:auto; }
.unlock-transition.rainy-transition.active { animation:rainyUnlockBackdrop 4.6s ease-in-out both; }
.rainy-transition[data-phase="switching"] > * { visibility:hidden; }
.unlock-transition.rainy-transition.clock-jump { background:radial-gradient(ellipse at 50% 44%,#302b3b 0%,#171b2e 52%,#0b1020 100%); }
.rainy-transition[data-phase="switching"] > .clock-jump-canvas { position:absolute; inset:0; width:100%; height:100%; visibility:visible; pointer-events:none; }
@keyframes rainyUnlockBackdrop {
  0%,100% { opacity:1; }
}
.secret-close {
  position:absolute;
  top:10px;
  right:12px;
  width:38px;
  height:38px;
  border:0;
  border-radius:50%;
  color:#82685e;
  background:transparent;
  font-size:28px;
  cursor:pointer;
}
.secret-icon { margin-bottom:7px; font-size:32px; }
.secret-panel h3 { margin:0 28px 8px; font:700 23px/1.35 "KaiTi",serif; }
.secret-panel > p { margin-bottom:16px; color:#79635a; font-size:14px; }
.secret-panel form { display:flex; justify-content:center; gap:10px; }
.secret-code-field {
  position:relative;
  flex:0 1 156px;
  width:156px;
  max-width:calc(100% - 122px);
}
.secret-panel input {
  width:100%;
  height:48px;
  padding:0 14px;
  border:2px solid rgba(129,86,64,.2);
  border-radius:16px;
  outline:none;
  color:var(--ink);
  background:#fff;
  text-align:center;
  font-size:24px;
  font-weight:800;
  letter-spacing:.24em;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.secret-code-placeholder {
  position:absolute;
  top:50%;
  left:0;
  width:100%;
  transform:translateY(-50%);
  color:#757575;
  font-size:13px;
  font-weight:500;
  line-height:normal;
  letter-spacing:0;
  text-align:center;
  pointer-events:none;
}
.secret-panel input:not(:placeholder-shown) + .secret-code-placeholder {
  opacity:0;
}
.secret-panel input:focus { border-color:var(--pink-deep); box-shadow:0 0 0 4px rgba(223,135,153,.15); }
.secret-panel form .primary-button { min-width:112px; padding-inline:16px; }
.secret-message { min-height:23px; margin:12px 0 0 !important; color:var(--pink-deep) !important; font-weight:700; }
.secret-panel.shake { animation:panelShake .38s ease; }
.secret-panel.unlocking { opacity:0; transform:translateY(12px) scale(.96); pointer-events:none; }

/* 验证成功后的开锁转场 */
.unlock-transition {
  position:fixed;
  inset:0;
  z-index:350;
  overflow:hidden;
  visibility:hidden;
  opacity:0;
  pointer-events:none;
}
.unlock-transition.active {
  visibility:visible;
  opacity:1;
  animation:unlockBackdrop 4.6s ease-in-out both;
}
.unlock-transition.complete { opacity:0; transition:opacity 1.8s ease-in-out; }
.unlock-lock {
  position:absolute;
  z-index:3;
  left:50%;
  top:50%;
  width:96px;
  height:116px;
  margin:-58px 0 0 -48px;
  filter:drop-shadow(0 0 12px rgba(255,222,126,.45));
  opacity:0;
}
.unlock-transition.active .unlock-lock { animation:lockShakeOpen 4.4s cubic-bezier(.2,.75,.2,1) both; }
.unlock-shackle {
  position:absolute;
  left:21px;
  top:0;
  width:54px;
  height:57px;
  border:10px solid #ffe7a0;
  border-bottom:0;
  border-radius:32px 32px 0 0;
  box-shadow:inset 0 0 8px rgba(255,255,255,.4),0 0 14px rgba(255,214,92,.3);
  transform-origin:47px 52px;
}
.unlock-transition.active .unlock-shackle { animation:shackleOpen 4.4s ease both; }
.unlock-lock-body {
  position:absolute;
  left:7px;
  top:44px;
  display:block;
  width:82px;
  height:68px;
  border:2px solid rgba(255,246,198,.72);
  border-radius:17px;
  background:linear-gradient(145deg,#ffe99d,#dcae38 72%,#b77b1d);
  box-shadow:inset 0 3px 5px rgba(255,255,255,.5),inset 0 -7px 12px rgba(116,67,5,.2),0 0 24px rgba(255,208,75,.38);
}
.unlock-lock-body i {
  position:absolute;
  left:50%;
  top:22px;
  width:13px;
  height:13px;
  border-radius:50%;
  background:#76501c;
  box-shadow:0 0 9px rgba(255,248,203,.58);
  transform:translateX(-50%);
}
.unlock-lock-body i::after {
  content:"";
  position:absolute;
  left:4px;
  top:9px;
  width:5px;
  height:16px;
  border-radius:0 0 4px 4px;
  background:#76501c;
}
.unlock-burst {
  position:absolute;
  z-index:2;
  left:50%;
  top:50%;
  width:1px;
  height:1px;
}
.unlock-burst::before,
.unlock-burst::after {
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:76px;
  height:76px;
  border:2px solid rgba(255,239,164,.72);
  border-radius:50%;
  box-shadow:0 0 22px rgba(255,220,103,.55),inset 0 0 18px rgba(255,220,103,.3);
  opacity:0;
  transform:translate(-50%,-50%) scale(.35);
}
.unlock-transition.active .unlock-burst::before { animation:unlockRing 4.2s ease-out .15s both; }
.unlock-transition.active .unlock-burst::after { animation:unlockRing 4.2s ease-out .42s both; }
.unlock-burst i {
  position:absolute;
  left:0;
  top:-1px;
  width:clamp(95px,32vw,155px);
  height:2px;
  border-radius:999px;
  background:linear-gradient(to right,rgba(255,248,205,.98),rgba(255,218,93,.55),transparent);
  box-shadow:0 0 9px rgba(255,225,119,.72);
  opacity:0;
  transform:rotate(var(--angle)) scaleX(0);
  transform-origin:left center;
}
.unlock-transition.active .unlock-burst i { animation:unlockRay 4.15s ease-out both; }

/* 暗号解锁后的全屏星空 */
/* Keep focus changes from scrolling the transformed stage behind the dialog. */
body.unlock-open .story,
body.unlock-open .final-scene { overflow:clip; }
.unlock-experience {
  position:fixed;
  inset:0;
  z-index:300;
  overflow:hidden;
  color:#fff;
  background:#061b47 url("./assets/sky-source/sky.png") center center / cover no-repeat;
  opacity:0;
  visibility:hidden;
  transform:scale(1.055);
  transition:opacity 1.15s ease, transform 1.8s cubic-bezier(.2,.8,.2,1), visibility 1.15s ease;
}
.unlock-experience.active { opacity:1; visibility:visible; transform:scale(1); }
.sky-background,
.sky-background-base,
.sky-background-incoming { position:absolute; inset:0; pointer-events:none; }
.sky-background { z-index:0; }
.sky-background-incoming { opacity:0; will-change:opacity; }
.sky-background img { display:block; width:100%; height:100%; object-fit:cover; object-position:center; }
.sky-cycle-button {
  position:absolute;
  z-index:7;
  top:calc(max(17px, env(safe-area-inset-top)) + 216px);
  right:17px;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid rgba(255,255,255,.38);
  border-radius:50%;
  color:#fff;
  background:rgba(4,27,72,.52);
  box-shadow:0 8px 25px rgba(0,8,37,.3),inset 0 0 12px rgba(255,255,255,.08);
  backdrop-filter:blur(12px);
  cursor:pointer;
  transition:opacity .32s ease,visibility .32s ease,transform .2s ease,background .25s ease,border-color .35s ease,box-shadow .35s ease;
}
.sky-cycle-button::before {
  content:"";
  position:absolute;
  inset:-5px;
  border:1px solid rgba(218,244,255,.65);
  border-radius:50%;
  box-shadow:0 0 12px rgba(175,226,255,.25);
  opacity:0;
  transform:scale(.9);
  pointer-events:none;
  transition:opacity .35s ease,transform .35s ease;
}
.sky-cycle-button svg { width:22px; height:22px; transition:filter .35s ease; }
.sky-cycle-button .sky-cycle-moon { fill:#fff; stroke:none; }
.sky-cycle-button.is-playing {
  border-color:rgba(255,255,255,.95);
  background:rgba(37,88,137,.8);
  box-shadow:0 0 22px rgba(174,224,255,.48),inset 0 0 14px rgba(226,246,255,.18);
}
.sky-cycle-button.is-playing::before { animation:skyCycleHalo 2.8s ease-in-out infinite; }
.sky-cycle-button.is-playing svg { filter:drop-shadow(0 0 5px rgba(235,250,255,.85)); animation:skyCycleMoon 2.8s ease-in-out infinite; }
.sky-cycle-button:hover { transform:scale(1.06); background:rgba(14,54,112,.68); }
.sky-cycle-button.is-playing:hover { background:rgba(48,104,153,.85); }
.sky-cycle-button:active { transform:scale(.92); }
.sky-cycle-button:focus-visible { outline:3px solid rgba(190,234,255,.52); outline-offset:3px; }
@keyframes skyCycleHalo {
  0%,100% { opacity:.3; transform:scale(.96); }
  50% { opacity:.85; transform:scale(1.07); }
}
@keyframes skyCycleMoon {
  0%,100% { transform:scale(1); }
  50% { transform:scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  .sky-cycle-button.is-playing::before { animation:none; opacity:.65; transform:scale(1); }
  .sky-cycle-button.is-playing svg { animation:none; }
}
.unlock-sound-button {
  touch-action:manipulation;
  position:absolute;
  z-index:7;
  top:max(17px, env(safe-area-inset-top));
  right:17px;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid rgba(255,255,255,.38);
  border-radius:50%;
  color:#fff;
  background:rgba(4,27,72,.52);
  box-shadow:0 8px 25px rgba(0,8,37,.3),inset 0 0 12px rgba(255,255,255,.08);
  backdrop-filter:blur(12px);
  font-size:13px;
  cursor:pointer;
  transition:opacity .32s ease,visibility .32s ease,transform .2s ease,background .25s ease,box-shadow .25s ease;
}
.unlock-sound-button:hover { transform:scale(1.06); background:rgba(14,54,112,.68); }
.unlock-sound-button:focus-visible { outline:3px solid rgba(190,234,255,.52); outline-offset:3px; }
.unlock-sound-icon { position:relative; display:block; width:20px; height:20px; color:#fff; filter:drop-shadow(0 0 4px rgba(204,240,255,.42)); animation:musicSpin 3s linear infinite; animation-play-state:paused; }
.unlock-sound-icon svg { display:block; width:100%; height:100%; overflow:visible; }
.unlock-sound-icon path { fill:none; stroke:currentColor; stroke-width:2.2; stroke-linecap:round; stroke-linejoin:round; }
.unlock-sound-icon ellipse { fill:currentColor; }
.unlock-sound-button.playing { padding-left:0; color:#fff; box-shadow:0 8px 25px rgba(0,8,37,.3),0 0 18px rgba(118,211,255,.34); }
.unlock-sound-button.playing .unlock-sound-icon { animation-play-state:running; }
.sky-letter-button {
  position:absolute;
  z-index:7;
  top:calc(max(17px, env(safe-area-inset-top)) + 54px);
  right:17px;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid rgba(255,255,255,.38);
  border-radius:50%;
  color:#fff;
  background:rgba(4,27,72,.52);
  box-shadow:0 8px 25px rgba(0,8,37,.3),inset 0 0 12px rgba(255,255,255,.08);
  backdrop-filter:blur(12px);
  font-size:18px;
  cursor:pointer;
  transition:opacity .32s ease,visibility .32s ease,transform .2s ease,background .25s ease,box-shadow .25s ease;
}
.sky-letter-button:hover { transform:scale(1.06); background:rgba(14,54,112,.68); box-shadow:0 8px 25px rgba(0,8,37,.3),0 0 18px rgba(255,226,137,.24); }
.sky-letter-button:focus-visible { outline:3px solid rgba(255,235,174,.56); outline-offset:3px; }
.sky-letter-icon {
  position:relative;
  display:block;
  width:20px;
  height:15px;
  border:2px solid currentColor;
  border-radius:3px;
  color:#fff;
  filter:drop-shadow(0 0 4px rgba(204,240,255,.42));
}
.sky-letter-icon::before,
.sky-letter-icon::after {
  content:"";
  position:absolute;
  top:1px;
  width:11px;
  height:2px;
  border-radius:999px;
  background:currentColor;
}
.sky-letter-icon::before { left:0; transform-origin:left center; transform:rotate(35deg); }
.sky-letter-icon::after { right:0; transform-origin:right center; transform:rotate(-35deg); }
.sky-wish-button {
  position:absolute;
  z-index:7;
  top:calc(max(17px, env(safe-area-inset-top)) + 108px);
  right:17px;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid rgba(255,255,255,.38);
  border-radius:50%;
  color:#fff;
  background:rgba(4,27,72,.52);
  box-shadow:0 8px 25px rgba(0,8,37,.3),inset 0 0 12px rgba(255,255,255,.08);
  backdrop-filter:blur(12px);
  font-size:21px;
  cursor:pointer;
  transition:opacity .32s ease,visibility .32s ease,transform .2s ease,background .25s ease,box-shadow .25s ease;
}
.sky-wish-button:hover { transform:scale(1.06); background:rgba(14,54,112,.68); box-shadow:0 8px 25px rgba(0,8,37,.3),0 0 20px rgba(255,222,111,.32); }
.sky-wish-button:focus-visible { outline:3px solid rgba(255,229,145,.58); outline-offset:3px; }
.sky-rainy-button { top:calc(max(17px, env(safe-area-inset-top)) + 270px); }
.sky-wish-icon {
  display:block;
  width:20px;
  height:20px;
  color:#fff;
  background:currentColor;
  clip-path:polygon(50% 0,61% 37%,100% 50%,61% 63%,50% 100%,39% 63%,0 50%,39% 37%);
  filter:drop-shadow(0 0 5px rgba(220,245,255,.65));
}
.sky-immersive-button {
  position:absolute;
  z-index:7;
  top:calc(max(17px, env(safe-area-inset-top)) + 162px);
  right:17px;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid rgba(255,255,255,.38);
  border-radius:50%;
  color:#fff;
  background:rgba(4,27,72,.52);
  box-shadow:0 8px 25px rgba(0,8,37,.3),inset 0 0 12px rgba(255,255,255,.08);
  backdrop-filter:blur(12px);
  font-size:19px;
  cursor:pointer;
  transition:opacity .32s ease,transform .2s ease,background .25s ease,box-shadow .25s ease;
}
.sky-immersive-button:hover { transform:scale(1.06); background:rgba(14,54,112,.68); box-shadow:0 8px 25px rgba(0,8,37,.3),0 0 18px rgba(153,220,255,.28); }
.sky-immersive-button:focus-visible { outline:3px solid rgba(190,234,255,.52); outline-offset:3px; }
.sky-immersive-icon { position:relative; display:block; width:20px; height:20px; color:#fff; filter:drop-shadow(0 0 4px rgba(204,240,255,.48)); }
.sky-immersive-icon::after { content:""; position:absolute; left:8px; top:8px; width:4px; height:4px; border-radius:50%; background:currentColor; box-shadow:0 0 7px 2px rgba(204,240,255,.5); }
.sky-immersive-icon i { position:absolute; width:8px; height:8px; border-color:currentColor; border-style:solid; }
.sky-immersive-icon i:nth-child(1) { left:0; top:0; border-width:2px 0 0 2px; }
.sky-immersive-icon i:nth-child(2) { right:0; top:0; border-width:2px 2px 0 0; }
.sky-immersive-icon i:nth-child(3) { right:0; bottom:0; border-width:0 2px 2px 0; }
.sky-immersive-icon i:nth-child(4) { left:0; bottom:0; border-width:0 0 2px 2px; }
.unlock-experience.immersive .unlock-sound-button,
.unlock-experience.immersive .sky-letter-button,
.unlock-experience.immersive .sky-wish-button,
.unlock-experience.immersive .sky-rainy-button,
.unlock-experience.immersive .sky-cycle-button,
.unlock-experience.immersive .date-ribbon:not(.triggered) {
  opacity:0;
  visibility:hidden;
  pointer-events:none;
}
.unlock-experience.immersive .sky-immersive-button {
  opacity:0;
  visibility:visible;
  pointer-events:auto;
  transform:none;
}
.sky-letter-backdrop {
  position:absolute;
  inset:0;
  z-index:20;
  background:rgba(0,9,35,.68);
  backdrop-filter:blur(5px);
  opacity:1;
  transition:opacity .3s ease,visibility .3s ease;
}
.sky-letter-backdrop.hidden { visibility:hidden; opacity:0 !important; transform:none !important; }
.sky-letter-panel {
  position:absolute;
  z-index:21;
  left:50%;
  top:50%;
  display:flex;
  flex-direction:column;
  width:min(calc(100% - 32px),440px);
  height:min(740px,85svh);
  height:min(740px,85dvh);
  max-height:calc(100svh - 40px);
  max-height:calc(100dvh - 40px);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.72);
  border-radius:26px;
  color:#5b4438;
  background:
    linear-gradient(rgba(255,250,239,.96),rgba(255,246,228,.96)),
    repeating-linear-gradient(0deg,transparent 0 31px,rgba(154,112,76,.08) 32px);
  box-shadow:0 28px 70px rgba(0,7,30,.52),inset 0 0 30px rgba(197,137,90,.08);
  opacity:1;
  transform:translate(-50%,-50%) scale(1);
  transition:opacity .3s ease,transform .38s cubic-bezier(.2,.8,.2,1),visibility .3s ease;
}
.sky-letter-panel.hidden { visibility:hidden; opacity:0 !important; transform:translate(-50%,calc(-50% + 18px)) scale(.96) !important; }
.sky-letter-heading { position:relative; flex:none; padding:25px 54px 17px 24px; border-bottom:1px solid rgba(129,86,64,.12); }
.sky-letter-kicker { display:block; margin-bottom:6px; color:#ad7b62; font:700 10px/1.2 ui-monospace,SFMono-Regular,monospace; letter-spacing:.2em; }
.sky-letter-heading h2 { margin:0; color:#694938; font:700 24px/1.35 "KaiTi","STKaiti",serif; }
.sky-letter-subtitle { margin:7px 0 0; color:#a0806b; font-size:12px; letter-spacing:.06em; }
.sky-letter-close {
  position:absolute;
  top:17px;
  right:17px;
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  padding:0 0 2px;
  border:0;
  border-radius:50%;
  color:#815640;
  background:rgba(129,86,64,.09);
  font-size:24px;
  cursor:pointer;
}
.sky-letter-close:hover { background:rgba(129,86,64,.16); }
.sky-letter-close:focus-visible { outline:3px solid rgba(223,135,153,.35); outline-offset:2px; }
.sky-letter-content {
  flex:1;
  min-height:0;
  padding:25px;
  overflow-y:auto;
  overscroll-behavior:contain;
  -webkit-overflow-scrolling:touch;
  font:16px/2 "KaiTi","STKaiti","PingFang SC",serif;
  letter-spacing:.035em;
  scrollbar-width:thin;
  scrollbar-color:rgba(129,86,64,.3) transparent;
}
.sky-letter-content:focus-visible { outline:2px solid rgba(173,123,98,.5); outline-offset:-5px; }
.sky-letter-content p { margin:0; }
.sky-letter-salutation { margin-bottom:1.25em !important; font-size:17px; font-weight:700; text-indent:0; }
.sky-letter-paragraph { margin-bottom:.9em !important; text-align:justify; text-indent:2em; text-justify:inter-ideograph; }
.sky-letter-paragraph:last-child { margin-bottom:0 !important; }
.sky-letter-postscript {
  margin-top:1.45em !important;
  padding-top:1.15em;
  border-top:1px dashed rgba(129,86,64,.24);
  color:#76594a;
  font-size:14px;
  line-height:1.85;
  text-align:justify;
  text-indent:0;
  text-justify:inter-ideograph;
}
.sky-wish-backdrop {
  position:absolute;
  inset:0;
  z-index:22;
  background:rgba(0,8,34,.72);
  backdrop-filter:blur(6px);
  opacity:1;
  transition:opacity .3s ease,visibility .3s ease;
}
.sky-wish-backdrop.hidden { visibility:hidden; opacity:0 !important; transform:none !important; }
.sky-wish-panel {
  position:absolute;
  z-index:23;
  left:50%;
  top:50%;
  width:min(calc(100% - 32px),410px);
  max-height:calc(100dvh - 32px);
  padding:28px 22px 22px;
  overflow-x:hidden;
  overflow-y:auto;
  border:1px solid rgba(190,232,255,.46);
  border-radius:27px;
  color:#effaff;
  background:linear-gradient(155deg,rgba(10,45,100,.96),rgba(4,22,64,.97));
  box-shadow:0 26px 70px rgba(0,5,27,.55),inset 0 0 32px rgba(139,216,255,.08);
  backdrop-filter:blur(16px);
  opacity:1;
  transform:translate(-50%,-50%) scale(1);
  transition:opacity .3s ease,transform .38s cubic-bezier(.2,.8,.2,1),visibility .3s ease;
}
.sky-wish-panel::before {
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:radial-gradient(circle at 18% 14%,rgba(255,235,159,.2) 0 2px,transparent 3px),radial-gradient(circle at 82% 25%,rgba(170,228,255,.24) 0 1px,transparent 2px);
}
.sky-wish-panel.hidden { visibility:hidden; opacity:0 !important; transform:translate(-50%,calc(-50% + 18px)) scale(.96) !important; }
.sky-wish-close {
  position:absolute;
  z-index:2;
  top:15px;
  right:15px;
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  padding:0 0 2px;
  border:1px solid rgba(255,255,255,.16);
  border-radius:50%;
  color:#dff5ff;
  background:rgba(255,255,255,.08);
  font-size:24px;
  cursor:pointer;
}
.sky-wish-close:hover { background:rgba(255,255,255,.15); }
.sky-wish-close:focus-visible { outline:3px solid rgba(190,234,255,.48); outline-offset:2px; }
.sky-wish-star { position:relative; display:block; margin-bottom:4px; color:#ffe28a; font-size:28px; text-shadow:0 0 18px rgba(255,215,87,.7); }
.sky-wish-kicker { position:relative; display:block; color:#addfff; font:700 9px/1.2 ui-monospace,SFMono-Regular,monospace; letter-spacing:.2em; }
.sky-wish-panel h2 { position:relative; margin:7px 0 8px; color:#fff; font-size:30px; }
.sky-wish-panel > p { position:relative; margin:0 0 17px; color:rgba(225,244,255,.74); font-size:13px; line-height:1.6; }
.sky-wish-panel form { position:relative; }
.sky-wish-panel textarea {
  display:block;
  width:100%;
  min-height:128px;
  resize:none;
  padding:15px 16px;
  border:1px solid rgba(199,235,255,.28);
  border-radius:17px;
  outline:0;
  color:#f7fcff;
  background:rgba(0,15,52,.4);
  box-shadow:inset 0 3px 12px rgba(0,5,28,.18);
  font:15px/1.7 "PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  caret-color:#ffe28a;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sky-wish-panel textarea::placeholder { color:rgba(211,236,250,.4); }
.sky-wish-panel textarea:focus { border-color:rgba(255,226,138,.68); box-shadow:0 0 0 3px rgba(255,217,99,.1),inset 0 3px 12px rgba(0,5,28,.18); }
.sky-wish-meta { display:flex; justify-content:flex-end; min-height:23px; padding:5px 3px 2px; color:rgba(210,237,250,.52); font-size:11px; }
.sky-wish-submit {
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  width:100%;
  min-height:48px;
  padding:11px 18px;
  border:1px solid rgba(255,239,179,.46);
  border-radius:16px;
  color:#173662;
  background:linear-gradient(135deg,#fff5c9,#ffd76d);
  box-shadow:0 9px 24px rgba(0,5,28,.25),0 0 16px rgba(255,215,98,.14);
  font-weight:800;
  cursor:pointer;
  transition:transform .2s ease,filter .2s ease,opacity .2s ease;
}
.sky-wish-submit:hover { transform:translateY(-1px); filter:brightness(1.04); }
.sky-wish-submit:disabled { opacity:.58; cursor:wait; transform:none; }
.sky-wish-submit:focus-visible { outline:3px solid rgba(255,229,145,.4); outline-offset:3px; }
.sky-wish-panel .sky-wish-status { min-height:20px; margin:10px 0 0; color:#ffe79c; font-size:12px; text-align:center; }
.sky-wish-panel .sky-wish-status.error { color:#ffc4cb; }
.wish-fireworks { position:absolute; inset:0; z-index:3; overflow:hidden; pointer-events:none; }
.wish-firework { position:absolute; left:var(--firework-x); top:var(--firework-y); width:1px; height:1px; mix-blend-mode:screen; filter:saturate(1.18); }
.wish-firework::before {
  content:"";
  position:absolute;
  left:-42px;
  top:-42px;
  width:84px;
  height:84px;
  background:linear-gradient(90deg,transparent 47%,rgba(255,255,255,.96) 50%,transparent 53%),linear-gradient(0deg,transparent 47%,rgba(255,255,255,.96) 50%,transparent 53%);
  opacity:0;
  filter:drop-shadow(0 0 8px var(--firework-color));
  animation:wishFireworkGlint .62s ease-out var(--burst-delay) both;
}
.wish-firework-rocket {
  position:absolute;
  left:-2px;
  top:-7px;
  width:4px;
  height:14px;
  border-radius:999px;
  background:#fff8d7;
  box-shadow:0 0 7px 2px rgba(255,224,114,.9),0 9px 14px 1px rgba(255,126,78,.5);
  animation:wishRocketRise var(--rocket-duration) cubic-bezier(.24,.45,.3,1) both;
}
.wish-firework-rocket::after {
  content:"";
  position:absolute;
  left:1px;
  top:9px;
  width:2px;
  height:76px;
  border-radius:999px;
  background:linear-gradient(to bottom,rgba(255,248,211,.96),rgba(255,185,82,.56) 32%,rgba(255,100,63,.2) 65%,transparent);
  box-shadow:0 7px 12px rgba(255,165,69,.38);
  filter:blur(.35px);
}
.wish-firework-flash {
  position:absolute;
  left:-5px;
  top:-5px;
  width:10px;
  height:10px;
  border-radius:50%;
  background:#fff;
  box-shadow:0 0 20px 8px var(--firework-color);
  opacity:0;
  animation:wishFireworkFlash .42s ease-out var(--burst-delay) both;
}
.wish-firework-ring {
  position:absolute;
  left:-7px;
  top:-7px;
  width:14px;
  height:14px;
  border:2px solid var(--firework-color);
  border-radius:50%;
  filter:drop-shadow(0 0 5px var(--firework-color));
  opacity:0;
  animation:wishFireworkRing .7s ease-out var(--burst-delay) both;
}
.wish-firework-ring.ring-2 { animation-delay:calc(var(--burst-delay) + .12s); }
.wish-firework-particle {
  position:absolute;
  left:-2px;
  top:-2px;
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--particle-color);
  box-shadow:0 0 8px 2px var(--particle-color);
  opacity:0;
  animation-name:wishFireworkBloom;
  animation-duration:var(--particle-duration);
  animation-timing-function:cubic-bezier(.12,.7,.2,1);
  animation-delay:calc(var(--burst-delay) + var(--particle-delay));
  animation-fill-mode:both;
}
.wish-firework-particle.is-core { width:6px; height:6px; left:-3px; top:-3px; box-shadow:0 0 12px 3px var(--particle-color); }
.wish-firework--heart .wish-firework-particle { width:5px; height:5px; left:-2.5px; top:-2.5px; }
.wish-firework--heart .wish-firework-ring { border-color:#ff91b2; }
.wish-firework--willow .wish-firework-particle {
  width:3px;
  height:9px;
  left:-1.5px;
  top:-4px;
  border-radius:999px;
  animation-name:wishFireworkWillow;
}
.wish-firework--willow .wish-firework-ring { border-color:#ffe68a; }
.unlock-experience::after {
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:linear-gradient(to bottom,rgba(1,11,38,.48),transparent 24%,transparent 61%,rgba(1,12,34,.58) 100%);
}
.sky-light {
  position:absolute;
  inset:0;
  z-index:6;
  pointer-events:none;
  background:radial-gradient(circle at 50% 48%,rgba(255,255,236,.96),rgba(255,247,197,.68) 30%,rgba(255,255,255,0) 72%);
  opacity:0;
}
.unlock-experience.active .sky-light { animation:skyReveal 1.75s ease both; }
.meteor-shower {
  position:absolute;
  inset:0;
  z-index:3;
  overflow:hidden;
  pointer-events:none;
}
.meteor-shower i {
  position:absolute;
  top:0;
  left:0;
  width:var(--size);
  height:4px;
  border-radius:999px;
  opacity:0;
  background:linear-gradient(90deg,transparent 0%,rgba(116,199,255,.04) 22%,rgba(164,220,255,.2) 58%,rgba(218,244,255,.72) 88%,#fff 100%);
  box-shadow:0 0 9px rgba(139,211,255,.45),0 0 18px rgba(99,180,255,.18);
  filter:drop-shadow(0 0 6px rgba(190,232,255,.58));
  transform-origin:right center;
  will-change:transform,opacity;
}
.meteor-shower i::before {
  content:"";
  position:absolute;
  left:14%;
  right:0;
  top:50%;
  height:1px;
  border-radius:999px;
  background:linear-gradient(90deg,transparent,rgba(235,249,255,.52) 62%,#fff);
  box-shadow:0 0 4px rgba(225,247,255,.72);
  transform:translateY(-50%);
}
.meteor-shower i::after {
  content:"";
  position:absolute;
  right:-3px;
  top:50%;
  width:7px;
  height:7px;
  border-radius:50%;
  background:#fff;
  box-shadow:0 0 8px 2px rgba(225,248,255,.96),0 0 20px 6px rgba(116,199,255,.38);
  transform:translateY(-50%);
}
.unlock-experience.meteors-active .meteor-shower i {
  animation:meteorFlight var(--duration) linear var(--delay) infinite both;
}
.date-ribbon {
  --drag-y:0px;
  position:absolute;
  z-index:8;
  top:0;
  left:max(14px, env(safe-area-inset-left));
  width:76px;
  height:calc(122px + var(--drag-y));
  padding:0;
  border:0;
  color:#fff8ec;
  background:transparent;
  cursor:grab;
  touch-action:none;
  user-select:none;
  transition:height .42s cubic-bezier(.2,.8,.2,1),opacity .38s ease,visibility .38s ease;
}
.date-ribbon:focus-visible { outline:2px solid rgba(230,246,255,.9); outline-offset:4px; border-radius:12px; }
.date-ribbon.dragging { cursor:grabbing; transition:none; }
.date-ribbon.triggered {
  opacity:0;
  pointer-events:none;
}
.date-ribbon.hidden { visibility:hidden; }
.date-pull-cord {
  position:absolute;
  inset:0;
  display:block;
}
.date-cord-line {
  position:absolute;
  top:-3px;
  left:30px;
  width:3px;
  height:calc(57px + var(--drag-y));
  border-radius:0 0 999px 999px;
  background:linear-gradient(90deg,#5f2d18 0%,#f2ad38 28%,#77361b 57%,#ffd56b 79%,#572714 100%);
  box-shadow:0 0 5px rgba(255,185,65,.5),0 0 12px rgba(255,155,32,.24);
  transition:height .42s cubic-bezier(.2,.8,.2,1);
}
.date-cord-line::before {
  content:"";
  position:absolute;
  left:50%;
  top:3px;
  width:5px;
  height:10px;
  border-radius:50%;
  background:rgba(255,236,157,.98);
  box-shadow:0 0 6px 2px rgba(255,190,61,.75);
  transform:translateX(-50%);
  animation:cordLightTravel 2.2s ease-in-out infinite;
}
.date-cord-line::after {
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:repeating-linear-gradient(0deg,transparent 0 5px,rgba(255,255,255,.34) 6px,transparent 8px);
}
.date-cord-art {
  position:absolute;
  top:-31px;
  left:-17px;
  width:96px;
  height:144px;
  object-fit:contain;
  pointer-events:none;
  filter:drop-shadow(0 5px 8px rgba(0,6,28,.34));
  transform:translateY(var(--drag-y));
  transition:transform .42s cubic-bezier(.2,.8,.2,1);
}
.date-cord-hint {
  position:absolute;
  top:101px;
  left:22px;
  width:19px;
  height:28px;
  opacity:.9;
  transform:translateY(var(--drag-y));
  transition:transform .42s cubic-bezier(.2,.8,.2,1);
}
.date-cord-hint i {
  position:absolute;
  left:5px;
  width:9px;
  height:9px;
  border-right:2px solid rgba(255,231,142,.94);
  border-bottom:2px solid rgba(255,231,142,.94);
  filter:drop-shadow(0 0 4px rgba(255,176,54,.88));
  opacity:0;
  transform:rotate(45deg);
  animation:cordHintDown 1.6s ease-in-out infinite;
}
.date-cord-hint i:nth-child(2) { animation-delay:.38s; }
.date-ribbon.dragging .date-cord-line,
.date-ribbon.dragging .date-cord-art,
.date-ribbon.dragging .date-cord-hint { transition:none; }
.date-ribbon:not(.dragging):not(.triggered) .date-cord-art { animation:cordHandleHint 1.7s ease-in-out infinite; }
.sky-character-layer {
  position:absolute;
  z-index:5;
  left:50%;
  top:50%;
  width:max(100%,calc(100vh * 941 / 1672));
  height:auto;
  aspect-ratio:941 / 1672;
  pointer-events:none;
  transform:translate(-50%,-50%);
}
.sky-character {
  position:absolute;
  padding:0;
  border:0;
  border-radius:44%;
  background:transparent;
  cursor:pointer;
  pointer-events:auto;
  touch-action:manipulation;
  -webkit-tap-highlight-color:transparent;
}
.sky-character-yier { left:27.5%; top:55.5%; width:var(--yier-width,25%); height:17.5%; }
.sky-character-bubu { left:var(--bubu-left,51.5%); top:55.8%; width:var(--bubu-width,23%); height:17.5%; }
.sky-character:focus-visible { outline:2px dashed rgba(224,247,255,.92); outline-offset:3px; }
.sky-character.just-tapped::after {
  content:"♥";
  position:absolute;
  left:50%;
  top:5%;
  color:#ffb5c8;
  font-size:18px;
  text-shadow:0 0 8px rgba(255,128,170,.85);
  pointer-events:none;
  animation:characterTapHeart .75s ease-out both;
}
.love-dialogue {
  position:absolute;
  z-index:1;
  left:50%;
  top:-58px;
  width:max-content;
  min-width:82px;
  padding:9px 15px 10px;
  border:1px solid rgba(255,255,255,.78);
  border-radius:19px;
  color:#65364c;
  background:rgba(255,250,246,.94);
  box-shadow:0 7px 20px rgba(0,9,39,.3),0 0 14px rgba(168,224,255,.22);
  backdrop-filter:blur(8px);
  font-size:15px;
  font-weight:800;
  letter-spacing:.05em;
  opacity:0;
  pointer-events:none;
  transform:translate(-50%,9px) scale(.88);
  transform-origin:50% 100%;
  transition:opacity .9s ease,transform .9s ease;
}
.love-dialogue::after {
  content:"";
  position:absolute;
  left:50%;
  bottom:-7px;
  width:13px;
  height:13px;
  border-right:1px solid rgba(255,255,255,.78);
  border-bottom:1px solid rgba(255,255,255,.78);
  background:rgba(255,250,246,.94);
  transform:translateX(-50%) rotate(45deg);
}
.love-dialogue.visible { opacity:1; transform:translate(-50%,0) scale(1); }
.love-dialogue.fading { opacity:0; transform:translate(-50%,-9px) scale(.96); }
.unlock-copy {
  position:absolute;
  z-index:4;
  top:max(28px, env(safe-area-inset-top));
  left:24px;
  right:24px;
  text-align:center;
  text-shadow:0 3px 20px rgba(0,8,34,.75);
  pointer-events:none;
}
.unlock-copy span { display:block; margin-bottom:9px; color:#ccecff; font:700 10px/1.2 ui-monospace,SFMono-Regular,monospace; letter-spacing:.22em; }
.unlock-copy h2 { margin:0; color:#fff; font-size:clamp(25px,7vw,36px); line-height:1.35; }
.date-rain { position:absolute; inset:0; z-index:2; overflow:hidden; pointer-events:none; }
.date-card {
  position:absolute;
  top:0;
  left:var(--left);
  width:max-content;
  padding:4px 8px 5px;
  border:1px solid rgba(204,238,255,.34);
  border-radius:999px;
  color:#fff;
  background:rgba(5,30,79,.34);
  box-shadow:0 0 12px rgba(113,211,255,.28),inset 0 0 8px rgba(255,255,255,.07);
  backdrop-filter:blur(3px);
  filter:blur(var(--blur));
  text-align:center;
  opacity:0;
  transform:translate3d(-50%,-60px,0) scale(var(--scale));
}
.date-card::before {
  content:"✦";
  position:absolute;
  right:calc(100% + 4px);
  top:50%;
  color:#d9f5ff;
  font-size:8px;
  text-shadow:0 0 8px rgba(137,218,255,.9);
  transform:translateY(-50%);
}
.unlock-experience.dates-active .date-card { animation:dateSnow 78s linear var(--delay) infinite both; }
.unlock-experience.dates-active .date-card.subtle-date { animation-name:dateSnowSubtle; animation-duration:156s; }
.date-card time { position:relative; z-index:1; display:block; font:700 14px/1.2 ui-monospace,SFMono-Regular,monospace; letter-spacing:.04em; text-shadow:0 1px 5px rgba(0,7,32,.8); }
/* The recording stays in the letter footer while the text scrolls. */
.recording-box {
  flex:none;
  padding:17px 24px max(18px, env(safe-area-inset-bottom));
  border-top:1px solid rgba(129,86,64,.14);
  background:linear-gradient(135deg,#fbf0df,#fff8ec);
}
.recording-label { display:block; color:#876552; font-size:12px; letter-spacing:.035em; }
.recording-unlock-form { margin-top:12px; color:#876552; font-size:13px; }
.recording-unlock-form.hidden { display:none; }
.recording-unlock-controls { display:flex; gap:8px; margin:8px 0; }
.recording-unlock-controls input { min-width:0; width:100%; padding:8px; border:1px solid #cbb29e; border-radius:8px; background:#fffaf1; font-size:16px; }
.recording-unlock-controls button { flex:none; padding:8px 12px; border:0; border-radius:8px; color:#fffaf1; background:#9b7159; cursor:pointer; }
.recording-controls { display:flex; align-items:center; gap:15px; margin-top:10px; }
.recording-play-button {
  display:grid;
  place-items:center;
  flex:none;
  width:46px;
  height:46px;
  padding:0;
  border:1px solid rgba(129,86,64,.15);
  border-radius:50%;
  color:#fffaf1;
  background:#9b7159;
  box-shadow:0 4px 12px rgba(129,86,64,.15);
  cursor:pointer;
  transition:background .2s ease;
}
.recording-play-button:hover { background:#805a45; }
.recording-play-button:focus-visible,
.recording-progress:focus-visible { outline:3px solid rgba(173,123,98,.5); outline-offset:3px; }
.recording-play-button:disabled { opacity:.45; cursor:wait; }
.recording-play-icon { padding-left:2px; font-size:15px; }
.recording-box.is-playing .recording-play-icon { padding-left:0; font-size:12px; letter-spacing:-2px; }
.recording-timeline { flex:1; min-width:0; }
.recording-progress {
  --recording-progress:0%;
  display:block;
  width:100%;
  height:28px;
  margin:0;
  padding:0;
  border:0;
  border-radius:4px;
  appearance:none;
  -webkit-appearance:none;
  background:transparent;
  cursor:pointer;
  accent-color:#9b7159;
}
.recording-progress::-webkit-slider-runnable-track { height:4px; border-radius:4px; background:linear-gradient(to right,#9b7159 var(--recording-progress),#dfcebb var(--recording-progress)); }
.recording-progress::-webkit-slider-thumb { appearance:none; -webkit-appearance:none; width:14px; height:14px; margin-top:-5px; border:2px solid #fff7ea; border-radius:50%; background:#9b7159; box-shadow:0 1px 4px rgba(129,86,64,.25); }
.recording-progress::-moz-range-track { height:4px; border-radius:4px; background:#dfcebb; }
.recording-progress::-moz-range-progress { height:4px; border-radius:4px; background:#9b7159; }
.recording-progress::-moz-range-thumb { width:10px; height:10px; border:2px solid #fff7ea; border-radius:50%; background:#9b7159; }
.recording-progress:disabled { opacity:.45; cursor:default; }
.recording-times { display:flex; justify-content:space-between; color:#8c7361; font:11px/1.4 ui-monospace,SFMono-Regular,monospace; font-variant-numeric:tabular-nums; }
.recording-box audio { display:none; }
.recording-status:empty { display:none; }
.recording-status { margin:8px 0 0 !important; color:#9c503c !important; font-size:12px; line-height:1.5; }
@media (max-width:600px) {
  .sky-letter-panel {
    top:auto;
    bottom:0;
    left:0;
    width:100%;
    height:75svh;
    height:75dvh;
    max-height:calc(100dvh - 16px);
    border-radius:26px 26px 0 0;
    border-bottom:0;
    transform:none;
  }
  .sky-letter-panel.hidden { transform:translateY(100%) !important; }
}
@media (max-height:500px) {
  .sky-letter-panel { height:calc(100dvh - 16px); max-height:calc(100dvh - 16px); }
  .sky-letter-heading { padding:14px 54px 12px 20px; }
  .sky-letter-kicker { display:none; }
  .sky-letter-subtitle { margin-top:3px; }
  .sky-letter-content { padding:16px 20px; }
  .recording-box { padding:10px 20px max(10px, env(safe-area-inset-bottom)); }
  .recording-controls { margin-top:4px; }
}
.toast {
  position:fixed;
  z-index:999;
  left:50%;
  bottom:max(24px, env(safe-area-inset-bottom));
  width:max-content;
  max-width:calc(100vw - 40px);
  padding:11px 17px;
  border-radius:999px;
  color:#fff;
  background:rgba(54,39,33,.9);
  box-shadow:0 10px 30px rgba(0,0,0,.22);
  transform:translateX(-50%);
  transition:opacity .25s ease;
  font-size:14px;
}
.toast.hidden { transform:translateX(-50%) translateY(8px) !important; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
#backgroundMusic { display:none; }

@keyframes panelShake { 25% { transform:translateX(-8px); } 50% { transform:translateX(7px); } 75% { transform:translateX(-4px); } }
@keyframes playAttention { 50% { transform:translateY(-2px) scale(1.015); box-shadow:0 14px 30px rgba(176,90,109,.4); } }
@keyframes unlockBackdrop {
  0% { background:rgba(1,5,16,0); }
  13% { background:rgba(1,5,16,.92); }
  67% { background:rgba(1,5,16,.96); }
  82% { background:rgba(255,251,232,.97); }
  100% { background:#fff; }
}
@keyframes lockShakeOpen {
  0%, 7% { opacity:0; transform:scale(.68); }
  12% { opacity:1; transform:scale(1); }
  22% { transform:translateX(-7px) rotate(-6deg); }
  27% { transform:translateX(8px) rotate(6deg); }
  32% { transform:translateX(-6px) rotate(-5deg); }
  37% { transform:translateX(7px) rotate(5deg); }
  42% { transform:translateX(-4px) rotate(-3deg); }
  47% { transform:translateX(4px) rotate(3deg); }
  53% { transform:translateX(0) rotate(0); }
  66% { opacity:1; transform:scale(1.08); filter:drop-shadow(0 0 34px rgba(255,229,131,.95)) brightness(1.35); }
  84% { opacity:1; transform:scale(1.13); filter:drop-shadow(0 0 48px rgba(255,244,193,1)) brightness(1.8); }
  100% { opacity:0; transform:scale(1.28); filter:drop-shadow(0 0 64px #fff) brightness(2.5) blur(1px); }
}
@keyframes shackleOpen {
  0%, 57% { transform:translate(0,0) rotate(0); }
  68%, 88% { transform:translate(10px,-12px) rotate(38deg); }
  100% { opacity:0; transform:translate(12px,-16px) rotate(42deg); }
}
@keyframes unlockRay {
  0%, 29% { opacity:0; transform:rotate(var(--angle)) scaleX(0); }
  35% { opacity:.95; transform:rotate(var(--angle)) scaleX(.14); }
  59% { opacity:.8; transform:rotate(var(--angle)) scaleX(1); }
  74%, 100% { opacity:0; transform:rotate(var(--angle)) scaleX(1.65); }
}
@keyframes unlockRing {
  0%, 27% { opacity:0; transform:translate(-50%,-50%) scale(.35); }
  38% { opacity:.9; }
  66% { opacity:.28; transform:translate(-50%,-50%) scale(2.3); }
  80%, 100% { opacity:0; transform:translate(-50%,-50%) scale(3.2); }
}
@keyframes skyReveal {
  0% { opacity:0; }
  28% { opacity:1; }
  100% { opacity:0; }
}
@keyframes meteorFlight {
  0% { opacity:0; transform:translate3d(var(--start-x),var(--start-y),0) rotate(var(--angle)) scaleX(.42); }
  3% { opacity:0; }
  7% { opacity:.9; }
  29% { opacity:.9; }
  36%, 100% { opacity:0; transform:translate3d(var(--travel-x),var(--travel-y),0) rotate(var(--angle)) scaleX(1); }
}
@keyframes cordHandleHint {
  0%, 100% { transform:translateY(var(--drag-y)); }
  50% { transform:translateY(calc(var(--drag-y) + 6px)); }
}
@keyframes cordLightTravel {
  0% { opacity:0; transform:translate(-50%,-5px) scale(.55); }
  22% { opacity:1; }
  76% { opacity:.9; }
  100% { opacity:0; transform:translate(-50%,calc(48px + var(--drag-y))) scale(.9); }
}
@keyframes cordHintDown {
  0% { opacity:0; transform:translateY(-5px) rotate(45deg); }
  32% { opacity:1; }
  78% { opacity:.75; }
  100% { opacity:0; transform:translateY(15px) rotate(45deg); }
}
@keyframes characterTapHeart {
  0% { opacity:0; transform:translate(-50%,8px) scale(.55); }
  35% { opacity:1; }
  100% { opacity:0; transform:translate(-50%,-24px) scale(1.15); }
}
@keyframes dateSnow {
  0% { opacity:0; transform:translate3d(-50%,-60px,0) scale(var(--scale)); }
  2% { opacity:var(--alpha); }
  20% { opacity:var(--alpha); transform:translate3d(calc(-50% + var(--sway)),44vh,0) scale(var(--scale)) rotate(2deg); }
  30% { opacity:var(--alpha); transform:translate3d(-50%,var(--fade-start-y),0) scale(var(--scale)); }
  42% { opacity:0; transform:translate3d(calc(-50% + var(--sway-back)),var(--fade-end-y),0) scale(var(--scale)) rotate(-2deg); }
  46%, 100% { opacity:0; transform:translate3d(calc(-50% + var(--sway-back)),var(--fade-end-y),0) scale(var(--scale)); }
}
@keyframes dateSnowSubtle {
  0% { opacity:0; transform:translate3d(-50%,-60px,0) scale(var(--scale)); }
  1% { opacity:var(--alpha); }
  10% { opacity:var(--alpha); transform:translate3d(calc(-50% + var(--sway)),44vh,0) scale(var(--scale)) rotate(2deg); }
  15% { opacity:var(--alpha); transform:translate3d(-50%,var(--fade-start-y),0) scale(var(--scale)); }
  21% { opacity:0; transform:translate3d(calc(-50% + var(--sway-back)),var(--fade-end-y),0) scale(var(--scale)) rotate(-2deg); }
  23%, 100% { opacity:0; transform:translate3d(calc(-50% + var(--sway-back)),var(--fade-end-y),0) scale(var(--scale)); }
}
@keyframes wishRocketRise {
  0% { opacity:0; transform:translate(var(--rocket-start-x),var(--rocket-rise)) scale(.55); }
  5% { opacity:1; }
  88% { opacity:1; }
  100% { opacity:0; transform:translate(0,0) scale(1); }
}
@keyframes wishFireworkGlint {
  0% { opacity:0; transform:scale(.18) rotate(0); }
  28% { opacity:.95; transform:scale(1) rotate(10deg); }
  100% { opacity:0; transform:scale(1.7) rotate(24deg); }
}
@keyframes wishFireworkFlash {
  0% { opacity:0; transform:scale(.25); }
  32% { opacity:1; transform:scale(1.35); }
  100% { opacity:0; transform:scale(2.2); }
}
@keyframes wishFireworkRing {
  0% { opacity:.9; transform:scale(.1); }
  100% { opacity:0; transform:scale(9); }
}
@keyframes wishFireworkBloom {
  0% { opacity:0; transform:translate(0,0) rotate(var(--particle-rotation)) scale(.35); }
  12% { opacity:1; }
  70% { opacity:.95; }
  100% { opacity:0; transform:translate(var(--particle-x),var(--particle-y)) rotate(var(--particle-rotation)) scale(.16); }
}
@keyframes wishFireworkWillow {
  0% { opacity:0; transform:translate(0,0) rotate(var(--particle-rotation)) scale(.45); }
  10% { opacity:1; }
  58% { opacity:.95; transform:translate(var(--particle-mid-x),var(--particle-mid-y)) rotate(var(--particle-rotation)) scale(.78); }
  100% { opacity:0; transform:translate(var(--particle-x),var(--particle-y)) rotate(var(--particle-rotation)) scale(.12); }
}

@media (max-height: 720px) {
  .final-character-badge { width:68px; height:68px; margin-top:-58px; margin-bottom:9px; }
  .final-letter p { margin-bottom:13px; line-height:1.65; }
  .final-letter h2 { margin-bottom:11px; }
  .signature { margin-bottom:15px; }
  .secret-panel { padding:22px 18px 17px; }
  .unlock-copy { top:max(17px, env(safe-area-inset-top)); }
  .unlock-copy h2 { font-size:23px; }
  .sky-wish-panel { padding-top:21px; padding-bottom:16px; }
  .sky-wish-panel textarea { min-height:105px; }
}