:root{
  --ink:#0c0a10;
  --ink-2:#151019;
  --ink-3:#1d1622;
  --paper:#f6efe6;
  --paper-dim:rgba(246,239,230,.62);
  --paper-faint:rgba(246,239,230,.34);
  --amber:#eaa063;
  --rose:#d9778f;
  --line:rgba(246,239,230,.13);
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --pad:clamp(20px,6vw,56px);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,video{display:block;max-width:100%}
button{font-family:inherit;color:inherit;cursor:pointer}

/* 胶片颗粒 */
.grain{
  position:fixed;inset:0;z-index:60;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}

/* ---------- 口令门 ---------- */
.gate{
  position:fixed;inset:0;z-index:50;display:grid;place-items:center;
  padding:var(--pad);
  background:
    radial-gradient(120% 80% at 50% 0%,rgba(217,119,143,.18),transparent 60%),
    radial-gradient(90% 70% at 80% 100%,rgba(234,160,99,.14),transparent 60%),
    var(--ink);
  transition:opacity .7s ease,visibility .7s;
}
.gate.gone{opacity:0;visibility:hidden}
.gate-inner{width:100%;max-width:340px;text-align:center}
.gate-kicker{
  margin:0 0 18px;font-size:11px;letter-spacing:.42em;
  color:var(--paper-faint);text-transform:uppercase;
}
.gate-title{
  margin:0 0 10px;font-family:var(--serif);font-weight:400;
  font-size:clamp(22px,6.4vw,27px);line-height:1.45;
}
.gate-hint{margin:0 0 26px;font-size:13px;color:var(--paper-faint)}

.pin{display:flex;justify-content:center;gap:14px;margin-bottom:30px;height:20px}
.pin i{
  width:11px;height:11px;border-radius:50%;
  border:1px solid var(--paper-faint);transition:.25s;
}
.pin i.on{background:var(--amber);border-color:var(--amber);box-shadow:0 0 14px rgba(234,160,99,.55)}
.pin.shake{animation:shake .42s}
@keyframes shake{
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-8px)}
  40%{transform:translateX(7px)}
  60%{transform:translateX(-5px)}
  80%{transform:translateX(3px)}
}

.keys{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.keys button{
  height:56px;border-radius:16px;background:rgba(246,239,230,.045);
  border:1px solid var(--line);font-size:19px;font-variant-numeric:tabular-nums;
  transition:transform .12s,background .18s;
}
.keys button:active{transform:scale(.94);background:rgba(246,239,230,.12)}
.keys button.wide{font-size:13px;letter-spacing:.1em;color:var(--paper-dim)}
.gate-err{margin:18px 0 0;min-height:20px;font-size:13px;color:var(--rose)}

/* ---------- 通用 ---------- */
.app{padding-bottom:env(safe-area-inset-bottom)}
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:40;background:transparent}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--amber),var(--rose))}

section{padding:clamp(72px,14vh,130px) var(--pad);position:relative}
.sec-head{margin:0 auto 44px;max-width:620px}
.sec-kicker{
  margin:0 0 14px;font-size:10.5px;letter-spacing:.4em;color:var(--amber);
  text-transform:uppercase;
}
.sec-title{
  margin:0;font-family:var(--serif);font-weight:400;
  font-size:clamp(26px,7.2vw,40px);line-height:1.35;letter-spacing:.01em;
}
.sec-sub{margin:12px 0 0;font-size:13px;color:var(--paper-faint)}

.btn{
  border:1px solid var(--line);background:transparent;border-radius:999px;
  padding:11px 22px;font-size:13px;letter-spacing:.06em;color:var(--paper-dim);
  transition:.22s;
}
.btn:active{transform:scale(.96)}
.btn.ghost:hover{color:var(--paper);border-color:var(--paper-faint)}

/* 滚动淡入 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0ms)}
.reveal.in{opacity:1;transform:none}

/* ---------- 1 开场 ---------- */
.hero{
  min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding-top:calc(var(--pad) + 40px);overflow:hidden;
}
.hero-glow{
  position:absolute;width:min(560px,120vw);aspect-ratio:1;left:50%;top:38%;
  transform:translate(-50%,-50%);border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(217,119,143,.22),rgba(234,160,99,.10) 45%,transparent 70%);
  filter:blur(24px);animation:breathe 9s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:.75;transform:translate(-50%,-50%) scale(1)}50%{opacity:1;transform:translate(-50%,-50%) scale(1.08)}}
.hero-kicker{
  position:relative;margin:0 0 26px;font-size:11px;letter-spacing:.5em;color:var(--paper-faint);
}
.hero-title{
  position:relative;margin:0;font-family:var(--serif);font-weight:400;
  font-size:clamp(38px,12.5vw,86px);line-height:1.18;letter-spacing:.015em;
}
.hero-title em{
  font-style:normal;
  background:linear-gradient(100deg,var(--paper) 10%,var(--amber) 52%,var(--rose) 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  position:relative;margin:34px 0 0;max-width:30ch;
  font-size:clamp(14px,3.9vw,16px);color:var(--paper-dim);line-height:2;
}
.scroll-cue{
  position:absolute;left:50%;bottom:calc(34px + env(safe-area-inset-bottom));
  transform:translateX(-50%);width:1px;height:58px;background:linear-gradient(180deg,transparent,var(--paper-faint));
}
.scroll-cue span{
  position:absolute;left:-2px;top:0;width:5px;height:5px;border-radius:50%;
  background:var(--amber);animation:drop 2.4s ease-in-out infinite;
}
@keyframes drop{0%{top:0;opacity:0}30%{opacity:1}100%{top:100%;opacity:0}}

/* ---------- 2 二十七 ---------- */
.deck{max-width:620px;margin:0 auto}
.card{
  position:relative;min-height:clamp(230px,36vh,300px);
  padding:clamp(26px,7vw,42px);border-radius:24px;
  background:linear-gradient(160deg,rgba(246,239,230,.07),rgba(246,239,230,.02));
  border:1px solid var(--line);
  display:flex;flex-direction:column;justify-content:space-between;
  transition:transform .45s cubic-bezier(.2,.7,.2,1),opacity .45s;
  overflow:hidden;
}
.card::after{
  content:"";position:absolute;right:-40px;bottom:-70px;width:200px;height:200px;
  background:radial-gradient(circle,rgba(234,160,99,.14),transparent 70%);
}
.card.out{opacity:0;transform:translateY(-14px) scale(.98)}
.card.no{opacity:0;transform:translateY(14px) scale(.98)}
.card-no{
  font-family:var(--serif);font-size:clamp(52px,15vw,88px);line-height:1;
  color:rgba(246,239,230,.10);font-weight:400;letter-spacing:-.03em;
}
.card-text{
  position:relative;margin:0;font-family:var(--serif);
  font-size:clamp(19px,5.4vw,25px);line-height:1.85;letter-spacing:.01em;
}
.deck-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:20px;font-size:12px;color:var(--paper-faint);letter-spacing:.12em;
}
.reason-all{display:grid;gap:14px;margin-top:6px}
.reason-all p{
  margin:0;padding:18px 20px;border-radius:16px;font-family:var(--serif);
  font-size:16px;line-height:1.8;background:rgba(246,239,230,.035);
  border:1px solid rgba(246,239,230,.07);
}
.reason-all p b{color:var(--amber);font-weight:400;margin-right:12px;font-size:13px}

/* ---------- 3 时间轴 ---------- */
.tl{list-style:none;margin:0 auto;padding:0;max-width:560px;position:relative}
.tl::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,transparent,var(--line) 12%,var(--line) 88%,transparent);
}
.tl li{position:relative;padding:0 0 42px 38px}
.tl li:last-child{padding-bottom:0}
.tl li::before{
  content:"";position:absolute;left:2px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--ink);border:1px solid var(--amber);box-shadow:0 0 0 5px rgba(234,160,99,.07);
}
.tl time{display:block;font-size:11.5px;letter-spacing:.24em;color:var(--amber);margin-bottom:8px}
.tl h3{margin:0 0 6px;font-family:var(--serif);font-weight:400;font-size:19px}
.tl p{margin:0;font-size:14px;color:var(--paper-dim);line-height:1.9}

/* ---------- 4 相册 ---------- */
.rail{
  display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px var(--pad) 22px;margin:0 calc(var(--pad) * -1);
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 auto;width:min(76vw,400px);scroll-snap-align:center;
  border-radius:20px;overflow:hidden;position:relative;
  background:rgba(246,239,230,.04);border:1px solid rgba(246,239,230,.08);
}
.shot img,.shot video{
  width:100%;aspect-ratio:3/4;object-fit:cover;background:var(--ink-3);
}
.shot figcaption{
  position:absolute;left:0;right:0;bottom:0;margin:0;padding:26px 18px 16px;
  font-size:13px;line-height:1.7;color:var(--paper);
  background:linear-gradient(180deg,transparent,rgba(8,6,11,.88));
}
.shot .ph{
  aspect-ratio:3/4;display:grid;place-items:center;
  background:linear-gradient(150deg,#221826,#151019 55%,#241a1c);
  color:var(--paper-faint);font-size:12px;letter-spacing:.2em;
}

/* ---------- 5 拼图 ---------- */
.pz-wrap{display:flex;gap:clamp(16px,4vw,32px);align-items:flex-start;flex-wrap:wrap;max-width:680px;margin:0 auto}
.pz{
  display:grid;grid-template-columns:repeat(3,1fr);gap:3px;
  width:min(72vw,330px);aspect-ratio:1;border-radius:18px;overflow:hidden;
  background:rgba(246,239,230,.06);padding:3px;
}
.pz b{
  background-size:300% 300%;border-radius:6px;transition:transform .18s,opacity .18s,outline-color .18s;
  outline:2px solid transparent;outline-offset:-2px;
}
.pz b.sel{outline-color:var(--amber);transform:scale(.93)}
.pz b.ok{opacity:.55}
.pz-side{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.pz-ref{width:104px;aspect-ratio:1;object-fit:cover;border-radius:10px;opacity:.5}
.pz-stat{margin:0;font-size:12px;letter-spacing:.18em;color:var(--paper-faint)}
.pz-done{
  margin:26px auto 0;max-width:520px;text-align:center;font-family:var(--serif);
  font-size:clamp(17px,4.6vw,21px);color:var(--amber);line-height:1.9;
}

/* ---------- 6 信 ---------- */
.letter-body{max-width:600px;margin:0 auto}
.letter-body p{
  margin:0 0 22px;font-family:var(--serif);
  font-size:clamp(16px,4.4vw,18.5px);line-height:2.15;letter-spacing:.01em;
  color:rgba(246,239,230,.88);
}
.letter-body p:last-child{margin-bottom:0;text-align:right;color:var(--paper-dim)}

/* ---------- 7 尾声 ---------- */
.finale{text-align:center;max-width:620px;margin:0 auto;padding-bottom:clamp(80px,16vh,140px)}
.aud{margin:0 0 34px}
.aud button{
  display:inline-flex;align-items:center;gap:12px;
  padding:14px 26px;border-radius:999px;
  background:linear-gradient(120deg,rgba(234,160,99,.16),rgba(217,119,143,.14));
  border:1px solid rgba(234,160,99,.35);color:var(--paper);font-size:14px;
  letter-spacing:.04em;transition:.22s;
}
.aud button:active{transform:scale(.96)}
.aud .dot{
  width:9px;height:9px;border-radius:50%;background:var(--amber);
  box-shadow:0 0 0 0 rgba(234,160,99,.5);
}
.aud.playing .dot{animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(234,160,99,.55)}70%{box-shadow:0 0 0 14px rgba(234,160,99,0)}100%{box-shadow:0 0 0 0 rgba(234,160,99,0)}}
.qr{margin:0 0 30px}
.qr img{width:150px;margin:0 auto;border-radius:12px;background:#fff;padding:8px}
.qr p{margin:12px 0 0;font-size:12.5px;color:var(--paper-faint)}
.finale-text{
  margin:0 0 26px;font-family:var(--serif);font-size:clamp(19px,5.2vw,26px);line-height:1.9;
}
.sign{margin:0;font-size:12.5px;letter-spacing:.28em;color:var(--paper-faint)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{transition:none;opacity:1;transform:none}
  .hero-glow,.scroll-cue span,.aud.playing .dot{animation:none}
}
@media (max-width:600px){
  .pz-side{flex-direction:row;align-items:center;gap:16px;width:100%}
  .pz-ref{width:64px}
  .pz-stat{margin-left:auto}
  .pz-side .btn{padding:9px 16px;font-size:12px}
}
@media (min-width:760px){
  /* 桌面首屏与正文用同一条左基线，否则左边贴边、正文居中，看着散 */
  .hero > *:not(.hero-glow):not(.scroll-cue){
    width:100%;max-width:620px;margin-left:auto;margin-right:auto;
  }
  .rail{padding-left:0;padding-right:0;margin:0}
}

/* ================= 追加：导航 / 天数 / 收束 / 游戏 / 蜡烛 / 大图 ================= */

/* 章节导航 */
.dots{
  position:fixed;right:14px;top:50%;transform:translateY(-50%);z-index:45;
  display:none;flex-direction:column;gap:14px;align-items:flex-end;
}
.dots.show{display:flex}
.dots button{
  display:flex;align-items:center;gap:8px;background:none;border:0;padding:4px;
  color:var(--paper-faint);font-size:11px;letter-spacing:.1em;transition:color .25s;
}
.dots button i{
  width:5px;height:5px;border-radius:50%;background:rgba(246,239,230,.28);
  transition:.3s;display:block;
}
.dots button span{
  opacity:0;transform:translateX(6px);transition:.25s;white-space:nowrap;
}
.dots button:hover span,.dots button:focus-visible span{opacity:1;transform:none}
.dots button.on{color:var(--paper)}
.dots button.on i{background:var(--amber);box-shadow:0 0 0 4px rgba(234,160,99,.16)}
@media (max-width:899px){
  .dots{gap:12px;right:9px}
  .dots button span{display:none}
  .dots button.on i{transform:scale(1.25)}
}

/* 开场逐字 */
.unlocked #hero-word{
  opacity:0;transform:translateY(16px);
  animation:charIn 1.05s cubic-bezier(.2,.7,.2,1) .22s forwards;
}
.unlocked #hero-name span{
  display:inline-block;opacity:0;transform:translateY(16px);
  animation:charIn .9s cubic-bezier(.2,.7,.2,1) forwards;
}
@keyframes charIn{to{opacity:1;transform:none}}

/* 在一起天数 */
.hero-days{
  position:relative;margin:26px 0 0;font-size:12px;letter-spacing:.26em;
  color:var(--amber);opacity:.85;
}

/* 27 条收束 */
.deck-end{margin-top:34px;text-align:center;animation:charIn .8s cubic-bezier(.2,.7,.2,1) both}
.deck-end b{
  display:block;font-family:var(--serif);font-weight:400;
  font-size:clamp(64px,20vw,120px);line-height:1;
  background:linear-gradient(120deg,var(--amber),var(--rose));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.deck-end p{margin:14px 0 0;font-family:var(--serif);font-size:clamp(16px,4.4vw,19px);color:var(--paper-dim)}

/* 游戏区 */
.game-block{
  max-width:680px;margin:0 auto 64px;padding-top:6px;
  border-top:1px solid rgba(246,239,230,.08);
}
.game-block:first-of-type{border-top:0}
.game-block + .game-block{margin-top:8px}
.gb-head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  margin:0 0 20px;
}
.gb-head h3{
  margin:0;font-family:var(--serif);font-weight:400;font-size:clamp(18px,4.8vw,22px);
}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.seg button{
  background:none;border:0;padding:7px 14px;font-size:12px;color:var(--paper-faint);
  transition:.2s;letter-spacing:.04em;
}
.seg button.on{background:rgba(234,160,99,.16);color:var(--amber)}

.game-done{
  margin:22px auto 0;max-width:560px;text-align:center;font-family:var(--serif);
  font-size:clamp(16px,4.4vw,20px);color:var(--amber);line-height:1.9;
  animation:charIn .7s ease both;
}

/* 翻牌 */
.mem{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;max-width:420px}
.mc{
  aspect-ratio:1;border-radius:12px;border:1px solid rgba(246,239,230,.09);
  background:linear-gradient(150deg,rgba(246,239,230,.06),rgba(246,239,230,.02));
  color:var(--paper);font-size:13px;line-height:1.3;padding:4px;
  transition:transform .2s,background .3s,opacity .3s;
  display:grid;place-items:center;text-align:center;
}
.mc:active{transform:scale(.95)}
.mc.up{background:rgba(234,160,99,.12);border-color:rgba(234,160,99,.3)}
.mc.pair{opacity:.45;background:rgba(217,119,143,.12);border-color:rgba(217,119,143,.28)}

/* 蜡烛 */
.cake{width:200px;margin:8px auto 0;cursor:pointer;-webkit-tap-highlight-color:transparent}
.candle{
  width:9px;height:54px;margin:0 auto;position:relative;border-radius:4px;
  background:linear-gradient(#f6efe6,#ddd0be);
}
.flame{
  position:absolute;left:50%;top:-22px;transform:translateX(-50%);
  width:13px;height:21px;border-radius:50% 50% 46% 46%;
  background:radial-gradient(circle at 50% 72%,#fff6cf,#eaa063 58%,#d9778f 100%);
  box-shadow:0 0 18px rgba(234,160,99,.55);
  animation:flick 1.5s ease-in-out infinite;transform-origin:50% 100%;
}
@keyframes flick{
  0%,100%{transform:translateX(-50%) scale(1) rotate(-1deg)}
  50%{transform:translateX(-50%) scale(1.08,.94) rotate(1.5deg)}
}
.smoke{
  position:absolute;left:50%;top:-18px;width:5px;height:20px;opacity:0;
  transform:translateX(-50%);border-radius:50%;
  background:linear-gradient(rgba(246,239,230,.5),transparent);
}
.cake.blown .flame{opacity:0;transform:translateX(-50%) scale(.2);transition:.4s}
.cake.blown .smoke{animation:smokeUp 2s ease-out forwards}
@keyframes smokeUp{
  0%{opacity:.7;transform:translate(-50%,0) scale(1)}
  100%{opacity:0;transform:translate(-50%,-46px) scale(1.7)}
}
.cake-top{height:16px;margin:0 6px;border-radius:9px 9px 3px 3px;background:linear-gradient(#f2cda8,#e0a97c)}
.cake-body{
  height:88px;border-radius:5px;background:linear-gradient(#c98a5a,#8f5a3c);
  display:grid;place-items:center;font-family:var(--serif);font-size:36px;
  color:rgba(255,246,236,.35);letter-spacing:.1em;
}
.cake-plate{height:9px;margin:7px -14px 0;border-radius:50%;background:rgba(246,239,230,.10)}
.wish-done{
  margin:30px auto 0;max-width:520px;text-align:center;font-family:var(--serif);
  font-size:clamp(16px,4.6vw,20px);color:var(--amber);line-height:1.9;
  animation:charIn .8s ease both;
}

/* 大图 */
.lb{
  position:fixed;inset:0;z-index:80;display:grid;place-items:center;
  background:rgba(7,5,10,.95);backdrop-filter:blur(6px);
  animation:charIn .25s ease both;
}
.lb[hidden]{display:none}
.lb img{max-width:92vw;max-height:86vh;border-radius:8px;object-fit:contain}
.lb-close{
  position:absolute;top:calc(14px + env(safe-area-inset-top));right:18px;
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);
  background:rgba(246,239,230,.06);color:var(--paper);font-size:22px;line-height:1;
}

/* 撒花画布 */
.fx{position:fixed;inset:0;z-index:70;pointer-events:none;display:block}