@font-face{
  font-family:"PSY Serif";
  src:url("fonts/serif-400.woff2") format("woff2");
  font-weight:400;font-style:normal;font-display:block;
}
@font-face{
  font-family:"PSY Serif";
  src:url("fonts/serif-600.woff2") format("woff2");
  font-weight:500 700;font-style:normal;font-display:block;
}
:root{
  --bg:#05070d;
  --ink:#e9e6df;
  --ink-dim:rgba(233,230,223,.62);
  --ink-faint:rgba(233,230,223,.55);
  --hair:rgba(233,230,223,.16);
  --warm:#d9a05b;
  --serif:"PSY Serif","Songti SC","Source Han Serif SC","Noto Serif SC","STSong","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,.68,.16,1);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{overflow-x:clip}
html{background:var(--bg);-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--serif);
  font-size:16px;line-height:1.9;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  overscroll-behavior-y:none;
}
body.locked{overflow:hidden;height:100svh}

#sky{
  position:fixed;inset:0;width:100%;height:100%;
  display:block;z-index:0;touch-action:pan-y;
  opacity:0;transition:opacity 3s var(--ease);
}
#sky.ready{opacity:1}

.vignette{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(120% 80% at 50% 12%, rgba(5,7,13,0) 0%, rgba(5,7,13,.42) 58%, rgba(5,7,13,.9) 100%),
    radial-gradient(90% 60% at 50% 105%, rgba(5,7,13,.95) 0%, rgba(5,7,13,0) 60%);
}

/* ---------- 叙事层 ---------- */
#story{position:relative;z-index:2;transition:opacity 1.6s var(--ease)}
body.locked #story{opacity:0;pointer-events:none}

.act::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(62% 54% at 42% 50%, rgba(5,7,13,.74) 0%, rgba(5,7,13,.38) 46%, rgba(5,7,13,0) 74%);
}
.act--cinema::before{content:none}
.act--open::before{background:radial-gradient(48% 40% at 50% 50%, rgba(5,7,13,.62) 0%, rgba(5,7,13,.22) 56%, rgba(5,7,13,0) 78%)}
.act{
  position:relative;
  min-height:100svh;
  padding:22vh 7vw;
  max-width:42rem;margin:0 auto;
  display:flex;flex-direction:column;justify-content:center;
  gap:1.1rem;
}
.act--center{align-items:center;text-align:center;gap:1.4rem}
.act--open{justify-content:center;align-items:center;text-align:center;gap:2.2rem}
.act--letter{padding-top:20vh;padding-bottom:22vh;gap:1.9rem}
.act--keep{align-items:center;text-align:center;padding-top:14vh;gap:1.6rem}
.act--cinema{padding:0;max-width:none;min-height:130svh;justify-content:flex-end}
.act--cinema .act__body{max-width:42rem;padding:0 7vw 16vh;margin:0 auto;width:100%;display:flex;flex-direction:column;gap:1.1rem}

h1,h2{
  font-weight:500;margin:0;
  letter-spacing:.06em;line-height:1.55;
  text-wrap:balance;
}
h1{font-size:clamp(1.62rem,5.4vw,2.5rem)}
h2{font-size:clamp(1.34rem,4.2vw,1.9rem);letter-spacing:.08em}

.eyebrow{
  margin:0;font-family:var(--sans);
  font-size:.72rem;letter-spacing:.34em;color:var(--ink-faint);
  text-transform:uppercase;
}
.line{margin:0;font-size:clamp(1.28rem,4.4vw,1.9rem);letter-spacing:.1em;line-height:1.8}
.line--soft{color:var(--ink-dim);font-size:clamp(1.06rem,3.4vw,1.4rem)}

.say{margin:0;font-size:1.03rem;line-height:2.05;letter-spacing:.05em;color:var(--ink);max-width:31rem;text-wrap:pretty}
.say--soft{color:var(--ink-dim)}
.aside{margin:0;font-size:.82rem;line-height:1.9;letter-spacing:.12em;color:var(--ink-faint)}
.hint{margin-top:.6rem;font-family:var(--sans);font-size:.72rem;letter-spacing:.18em;color:rgba(233,230,223,.52)}

/* 观测注记 */
.obs{margin:.4rem 0 1rem;padding:0;border-top:1px solid var(--hair)}
.obs>div{display:grid;grid-template-columns:3.2rem 1fr;gap:.85rem;padding:.95rem 0;border-bottom:1px solid var(--hair)}
@media (min-width:600px){.obs>div{grid-template-columns:4.2rem 1fr;gap:1rem}}
.obs dt{font-family:var(--sans);font-size:.7rem;letter-spacing:.28em;color:var(--warm);opacity:.85;padding-top:.18rem}
.obs dd{margin:0;font-size:.94rem;line-height:1.95;color:var(--ink-dim);letter-spacing:.04em}

/* 三个坐标 */
.facts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}
.facts li{font-size:clamp(1.7rem,7vw,2.9rem);letter-spacing:.14em;line-height:1.5;font-weight:400}

/* 十一月十一日 */
.daylist{list-style:none;margin:1.4rem 0 1.8rem;padding:0;border-top:1px solid var(--hair)}
.daylist li{display:grid;grid-template-columns:3.4rem 1fr;gap:1.1rem;padding:.85rem 0;border-bottom:1px solid var(--hair);align-items:baseline}
.daylist .y{font-family:var(--sans);font-size:.7rem;letter-spacing:.16em;color:var(--warm);opacity:.8}
.daylist .t{font-size:.96rem;line-height:1.9;color:var(--ink-dim);letter-spacing:.03em}
.daylist em{font-style:normal;color:var(--ink);border-bottom:1px solid rgba(217,160,91,.45);padding-bottom:1px}

/* 计数 */
.counter{margin:0 0 .4rem;display:flex;align-items:baseline;gap:.5rem;font-variant-numeric:tabular-nums}
#days{font-size:clamp(3.2rem,15vw,6.4rem);letter-spacing:.02em;line-height:1;font-weight:300}
.unit{font-size:1rem;letter-spacing:.3em;color:var(--ink-faint)}

/* 二十一年 */
.act--years{padding-top:16vh;padding-bottom:16vh}
.yearlist{
  list-style:none;margin:1.2rem 0 1.6rem;padding:0;
  border-top:1px solid var(--hair);
  display:grid;grid-template-columns:1fr;column-gap:2.4rem;
}
@media (min-width:720px){.yearlist{grid-template-columns:1fr 1fr}}
.yearlist li{
  display:grid;grid-template-columns:2.9rem 1fr;gap:.9rem;align-items:baseline;
  padding:.62rem 0;border-bottom:1px solid var(--hair);
}
.yearlist .y{font-family:var(--sans);font-size:.68rem;letter-spacing:.12em;color:var(--warm);opacity:.8}
.yearlist .t{font-size:.95rem;line-height:1.8;color:var(--ink-dim);letter-spacing:.02em}

/* 这一年：地面（底边对齐成一条地平线，高度参差成地形） */
.ground{
  display:grid;grid-template-columns:repeat(3,1fr);
  align-items:end;gap:.42rem;
  margin:1.8rem 0 2.6rem;position:relative;
}
@media (min-width:600px){.ground{grid-template-columns:repeat(5,1fr);gap:.5rem}}
.ground::after{
  content:"";position:absolute;left:-7vw;right:-7vw;bottom:-1.15rem;height:1px;
  background:linear-gradient(90deg,transparent,rgba(233,230,223,.20) 22%,rgba(233,230,223,.20) 78%,transparent);
}
.shard{
  position:relative;overflow:hidden;border-radius:1px;
  height:var(--h,150px);
  background:rgba(255,255,255,.035);
  opacity:0;transform:translateY(16px);
  transition:opacity 1.6s var(--ease),transform 1.6s var(--ease);
  filter:brightness(.62) saturate(.82) contrast(1.06);
}
.shard img{width:100%;height:100%;object-fit:cover;display:block}
.shard.on{opacity:1;transform:none}
.shard::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(233,230,223,.06)}

/* 她自己拍下的句子 */
.act--bless{gap:1.8rem}
.bless{display:flex;gap:.5rem;justify-content:center;width:100%;margin:.4rem 0}
.bless picture{display:block;width:clamp(92px,28vw,176px)}
.bless img{
  width:100%;height:auto;display:block;border-radius:1px;
  filter:brightness(.62) saturate(.82) contrast(1.06);
  box-shadow:0 0 0 1px rgba(233,230,223,.07);
}

/* 大图 */
.plate{position:sticky;top:0;margin:0;height:100svh;width:100%;overflow:hidden;z-index:-1}
.plate img{width:100%;height:100%;object-fit:cover;display:block;filter:brightness(.62) saturate(.82) contrast(1.06)}
.plate::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,13,.75) 0%,rgba(5,7,13,.18) 38%,rgba(5,7,13,.92) 100%)}

/* 信 */
.act--letter .say{max-width:29rem}
.sign{font-size:clamp(1.4rem,5vw,2rem);letter-spacing:.14em;color:var(--ink)}
.date{font-family:var(--sans);font-size:.74rem;letter-spacing:.26em;color:var(--ink-faint)}

/* 证书 */
.cert{margin:0;display:flex;flex-direction:column;align-items:center;gap:.9rem;width:min(78vw,20rem)}
.cert canvas{width:100%;height:auto;display:block;border-radius:1px;background:#070a11;box-shadow:0 20px 60px -30px rgba(0,0,0,.9)}
.cert figcaption{font-size:.7rem;letter-spacing:.2em;color:var(--ink-faint);font-family:var(--sans)}

#save{
  appearance:none;background:transparent;color:var(--ink);
  border:1px solid rgba(233,230,223,.32);border-radius:999px;
  padding:.72rem 2.1rem;font-family:var(--serif);font-size:.92rem;letter-spacing:.3em;
  cursor:pointer;transition:border-color .5s var(--ease),background .5s var(--ease);
}
#save:hover,#save:focus-visible{border-color:rgba(233,230,223,.6);background:rgba(233,230,223,.04);outline:none}
#save[disabled]{opacity:.4;cursor:default}

.end{height:34vh}

/* ---------- 入场动画 ---------- */
[data-r]{opacity:0;transform:translateY(14px);transition:opacity 1.4s var(--ease),transform 1.4s var(--ease);transition-delay:var(--d,0s)}
[data-r].on{opacity:1;transform:none}

.cue{
  width:1px;height:4.2rem;display:block;
  background:linear-gradient(180deg,transparent,rgba(233,230,223,.5),transparent);
  animation:cue 3.4s var(--ease) infinite;
}
@keyframes cue{0%,100%{opacity:.15;transform:scaleY(.7)}50%{opacity:.7;transform:scaleY(1)}}

/* ---------- 门禁 ---------- */
.gate{
  position:fixed;inset:0;z-index:20;
  display:flex;align-items:center;justify-content:center;
  background:radial-gradient(58% 46% at 50% 45%, rgba(5,7,13,.62) 0%, rgba(5,7,13,.90) 60%, rgba(5,7,13,.97) 100%);
  transition:opacity 1.6s var(--ease),visibility 1.6s;
}
.gate.gone{opacity:0;visibility:hidden;pointer-events:none}
.gate__form{display:flex;flex-direction:column;align-items:center;gap:1.5rem;width:min(84vw,22rem)}
.gate label{
  font-family:var(--serif);font-size:.72rem;letter-spacing:.62em;
  color:rgba(233,230,223,.40);text-indent:.62em;
}
.gate input{
  appearance:none;background:transparent;border:0;border-bottom:1px solid rgba(233,230,223,.24);
  color:var(--ink);width:100%;text-align:center;
  font-family:var(--sans);font-size:1.16rem;letter-spacing:.28em;
  padding:.7rem 0 .8rem;outline:none;
  transition:border-color .5s var(--ease);
}
.gate input:focus{border-color:rgba(233,230,223,.62)}
.gate__msg{
  margin:0;height:1.4rem;font-size:.78rem;letter-spacing:.16em;color:var(--ink-faint);
}
.gate.shake .gate__form{animation:shake .5s var(--ease)}
@keyframes shake{10%,90%{transform:translateX(-2px)}30%,70%{transform:translateX(4px)}50%{transform:translateX(-6px)}}

/* ---------- 全屏 ---------- */
#fs{
  position:fixed;right:max(10px,env(safe-area-inset-right));bottom:max(10px,env(safe-area-inset-bottom));
  z-index:15;appearance:none;background:transparent;
  width:44px;height:44px;display:grid;place-items:center;
  border:1px solid rgba(233,230,223,.20);border-radius:50%;
  color:rgba(233,230,223,.66);line-height:0;
  cursor:pointer;opacity:0;transition:opacity 1s var(--ease),color .4s,border-color .4s;
}
#fs svg{width:16px;height:16px;display:block}
#fs:hover,#fs:focus-visible{color:#e9e6df;border-color:rgba(233,230,223,.5);outline:none}
body:not(.locked) #fs{opacity:1}
#fs:hover{color:rgba(233,230,223,.7)}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  [data-r]{opacity:1;transform:none}
}


/* 保存浮层（iOS / 微信内不能靠 download，改成让用户长按） */
.saveover{
  position:fixed;inset:0;z-index:30;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.2rem;
  padding:6vh 6vw;background:rgba(5,7,13,.97);
  animation:fadein .3s var(--ease);
}
.saveover[hidden]{display:none}
.saveover img{max-width:100%;max-height:72vh;display:block;border-radius:1px;box-shadow:0 20px 70px -30px #000}
.saveover__hint{margin:0;font-family:var(--sans);font-size:.78rem;letter-spacing:.22em;color:rgba(233,230,223,.62)}
@keyframes fadein{from{opacity:0}to{opacity:1}}