/* ===========================================================
   电子请帖 H5 · 样式（深色画册版）
   深墨底衬托亮色照片：纸白文字 / 哑金线条 / 暗房氛围
   =========================================================== */

:root{
  --bg:        #12100e;   /* 主背景：深墨 */
  --bg-deep:   #0b0a09;   /* 更深的照片墙底 */
  --bg-soft:   #17130f;   /* 卡片/单元格 */
  --paper:     #f4ece0;   /* 主文字：暖白 */
  --paper-dim: rgba(244,236,224,.70);
  --paper-faint: rgba(244,236,224,.44);
  --gold:      #c9ad80;
  --gold-soft: rgba(201,173,128,.45);
  --line:      rgba(244,236,224,.13);
  --line-soft: rgba(244,236,224,.07);
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

*,*::before,*::after{ box-sizing: border-box; }

html,body{
  margin:0; padding:0;
  background:var(--bg);
  color:var(--paper);
  font-family:var(--sans);
  -webkit-text-size-adjust:100%;
  -webkit-tap-highlight-color:transparent;
}

body{ overflow:hidden; }

img{ display:block; max-width:100%; }
button{ font:inherit; color:inherit; }

/* ---------- 滚动容器 ---------- */
.deck{
  position:relative;
  height:100vh;
  height:100dvh;
  overflow-y:auto;
  overflow-x:hidden;
  scroll-snap-type:y proximity;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior-y:contain;
  scrollbar-width:none;
}
.deck::-webkit-scrollbar{ display:none; }

.page{
  position:relative;
  min-height:100vh;
  min-height:100dvh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  scroll-snap-align:start;
  scroll-snap-stop:always;
  overflow:hidden;
  background:var(--bg);
}

/* ---------- 全屏照片 ---------- */
.media{ position:absolute; inset:0; z-index:0; }
.media img{ width:100%; height:100%; object-fit:cover; object-position:center 32%; }
.media::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg,
      rgba(8,7,6,.66) 0%,
      rgba(8,7,6,.20) 30%,
      rgba(8,7,6,.38) 62%,
      rgba(10,9,8,.92) 100%);
}

/* ---------- 通用排版 ---------- */
.eyebrow{
  margin:0 0 18px;
  font-size:10px;
  letter-spacing:.44em;
  text-indent:.44em;
  color:rgba(244,236,224,.72);
  text-transform:uppercase;
}
.eyebrow.dark{ color:var(--gold); }

.serif{ font-family:var(--serif); font-weight:400; }

.rule{
  width:46px; height:1px; margin:22px auto;
  background:var(--gold-soft);
  border:0;
}
.rule-light{ background:rgba(244,236,224,.42); }

.reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .95s cubic-bezier(.22,.68,.28,1),
             transform .95s cubic-bezier(.22,.68,.28,1);
  will-change:opacity, transform;
}
.reveal.in{ opacity:1; transform:none; }

/* ---------- 1. 封面 ---------- */
.cover{ background:var(--bg); }

/* 纯 CSS 暖光底：不额外解码图片，也不吃 GPU 模糊 */
.cover-glow{
  position:absolute;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(58% 42% at 50% 34%, rgba(201,173,128,.20), rgba(201,173,128,0) 72%),
    radial-gradient(90% 55% at 50% 102%, rgba(126,84,52,.18), rgba(126,84,52,0) 72%),
    radial-gradient(70% 50% at 8% 8%, rgba(244,236,224,.05), rgba(244,236,224,0) 70%);
}
.cover-inner{
  position:relative; z-index:1;
  width:100%;
  padding:0 26px;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  color:var(--paper);
}
.cover-inner .eyebrow{ margin-bottom:16px; }
.names{
  margin:0;
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(25px,8.4vw,38px);
  letter-spacing:.1em;
  text-indent:.1em;
  line-height:1.35;
  white-space:nowrap;
}
.names .amp{
  font-style:normal;
  font-size:.44em;
  margin:0 .28em;
  vertical-align:.16em;
  color:var(--gold);
}
.cover-photo{
  flex:0 0 auto;
  margin:0 0 4px;
  height:clamp(216px, 42vh, 366px);
  aspect-ratio:3 / 4;
  overflow:hidden;
  border-radius:2px;
  border:1px solid rgba(244,236,224,.14);
  box-shadow:
    0 0 0 6px rgba(244,236,224,.03),
    0 26px 56px -16px rgba(0,0,0,.9);
}
.cover-photo img{
  width:100%; height:100%;
  object-fit:cover;
  object-position:center 30%;
}
.cover-date{
  margin:26px 0 0;
  font-size:clamp(13px,3.7vw,15px);
  letter-spacing:.3em;
  text-indent:.3em;
  color:rgba(244,236,224,.95);
}
.cover-date span{
  display:inline-block;
  margin-left:.4em;
  padding-left:.7em;
  border-left:1px solid rgba(244,236,224,.35);
  font-size:.86em;
  letter-spacing:.18em;
  color:rgba(244,236,224,.7);
}
.cover-venue{
  margin:12px 0 0;
  font-size:12px;
  letter-spacing:.18em;
  color:rgba(244,236,224,.6);
}

.scroll-hint{
  position:absolute; left:0; right:0; bottom:calc(26px + env(safe-area-inset-bottom));
  z-index:1;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-size:10px; letter-spacing:.3em; text-indent:.3em;
  color:rgba(244,236,224,.6);
}
.scroll-hint i{
  width:1px; height:26px;
  background:linear-gradient(180deg, rgba(244,236,224,.7), rgba(244,236,224,0));
  animation:drop 2.1s ease-in-out infinite;
}
@keyframes drop{
  0%,100%{ transform:translateY(-4px); opacity:.25; }
  45%{ transform:translateY(2px); opacity:1; }
}

/* ---------- 2. 邀请函 ---------- */
.letter-page{
  background:
    radial-gradient(120% 70% at 50% 0%, rgba(201,173,128,.07), transparent 62%),
    var(--bg);
}
.letter-page::before{
  content:"";
  position:absolute; inset:15px;
  border:1px solid rgba(201,173,128,.24);
  pointer-events:none;
}
.letter{
  position:relative; z-index:1;
  width:100%;
  max-width:360px;
  padding:34px 26px;
  text-align:center;
}
.letter h2{
  margin:0;
  font-size:26px;
  letter-spacing:.4em;
  text-indent:.4em;
  color:var(--paper);
}
.letter-body{
  margin:0 0 16px;
  font-size:14px;
  line-height:2.05;
  letter-spacing:.06em;
  color:var(--paper-dim);
}
.invite-word{
  margin:22px 0 20px;
  font-size:13px;
  line-height:2;
  letter-spacing:.05em;
  color:var(--paper-dim);
}
.letter-body.strong{
  margin-top:22px;
  font-size:15px;
  letter-spacing:.22em;
  color:var(--gold);
}
.sign{
  margin:0;
  font-size:14px;
  letter-spacing:.2em;
  color:var(--paper);
}

/* ---------- 3. 倒计时 ---------- */
.count-page{
  background:
    radial-gradient(90% 60% at 50% 100%, rgba(201,173,128,.06), transparent 60%),
    var(--bg-soft);
}
.count-inner{
  width:100%; max-width:380px;
  padding:0 24px;
  text-align:center;
}
.big-date{
  margin:0;
  font-size:clamp(30px,9.6vw,42px);
  letter-spacing:.06em;
  color:var(--paper);
  font-variant-numeric:tabular-nums;
}
.big-date em{ font-style:normal; color:var(--gold); }
.weekday{
  margin:12px 0 0;
  padding:0 22px;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--paper-faint);
}
.banquet{
  margin:9px 0 0;
  padding:0 22px;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--paper-faint);
}
.countdown{
  display:flex; justify-content:center; gap:10px;
  margin:28px 0 16px;
}
.cd-cell{
  flex:1 1 0; max-width:78px;
  padding:12px 4px 9px;
  border:1px solid var(--line);
  border-radius:2px;
  background:rgba(244,236,224,.035);
}
.cd-cell b{
  display:block;
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(21px,6.4vw,27px);
  line-height:1;
  font-variant-numeric:tabular-nums;
  color:var(--paper);
}
.cd-cell span{
  display:block;
  margin-top:8px;
  font-size:10px;
  letter-spacing:.2em;
  text-indent:.2em;
  color:var(--paper-faint);
}
.count-note{
  margin:0;
  font-size:11px;
  letter-spacing:.22em;
  color:var(--paper-faint);
}

/* ---------- 4. 照片墙 ---------- */
.gallery-page{
  background:var(--bg-deep);
  justify-content:center;
  gap:26px;
}
.gallery-head{ text-align:center; }
.gallery-head .eyebrow{ color:var(--gold); }
.gallery-head h2{
  margin:0;
  font-size:22px;
  letter-spacing:.3em;
  text-indent:.3em;
  color:var(--paper);
}
.gallery-tip{
  margin:12px 0 0;
  font-size:10.5px;
  letter-spacing:.24em;
  color:rgba(244,236,224,.4);
}
.gallery{
  display:flex;
  align-items:center;          /* 让不同高度的卡片各自居中，不被拉满 */
  gap:14px;
  width:100%;
  padding:0 34px 6px;
  overflow-x:auto;
  overflow-y:hidden;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.gallery::-webkit-scrollbar{ display:none; }
.shot{
  position:relative;
  flex:0 0 74%;               /* 统一宽度，老内核也稳定 */
  margin:0;
  height:min(52vh, 430px);
  scroll-snap-align:center;
  overflow:hidden;
  border-radius:2px;
  border:1px solid rgba(244,236,224,.10);
  background:#1a1613;
  box-shadow:0 22px 46px -12px rgba(0,0,0,.85);
}
.shot img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center 38%;
}
/* 横构图照片：整条铺满一屏宽，避免被竖框裁掉人，也保证章节标不被切 */
.shot.wide{
  flex:0 0 100%;
  height:auto;
  aspect-ratio:5 / 4;
}
.shot.wide img{ object-position:center 45%; }

/* 章节小标：把照片串成一条时间线 */
.shot figcaption{
  position:absolute;
  left:0; right:0; bottom:0;
  display:flex;
  align-items:baseline;
  gap:9px;
  padding:38px 14px 13px;
  background:linear-gradient(180deg, rgba(8,7,6,0) 0%, rgba(8,7,6,.72) 62%, rgba(8,7,6,.86) 100%);
  font-size:11.5px;
  letter-spacing:.2em;
  text-indent:.2em;
  color:rgba(244,236,224,.94);
  text-align:left;
  pointer-events:none;
}
.shot figcaption span{
  font-family:var(--serif);
  font-size:10px;
  letter-spacing:.06em;
  text-indent:0;
  color:var(--gold);
  opacity:.95;
}

/* ---------- 5. 时间地点 ---------- */
.venue-page{ background:var(--bg); }
.venue-inner{
  width:100%; max-width:380px;
  padding:40px 26px;
  text-align:center;
}
.venue-inner h2{
  margin:0;
  font-size:24px;
  letter-spacing:.28em;
  text-indent:.28em;
  color:var(--paper);
}
.info{
  margin:8px 0 0;
  text-align:left;
  border-top:1px solid var(--line);
}
.info-row{
  display:flex;
  gap:16px;
  padding:16px 2px;
  border-bottom:1px solid var(--line);
}
.info-row dt{
  flex:0 0 44px;
  font-size:11px;
  letter-spacing:.22em;
  color:var(--gold);
  padding-top:3px;
}
.info-row dd{
  margin:0;
  flex:1;
  font-size:14.5px;
  line-height:1.75;
  letter-spacing:.03em;
  color:var(--paper);
}
.info-row dd small{
  font-size:11.5px;
  color:var(--paper-faint);
  letter-spacing:.04em;
}

.venue-actions{
  display:flex;
  flex-wrap:wrap;
  gap:9px;
  margin:26px 0 0;
}
.btn{
  flex:1 1 0;
  min-width:96px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:12px 14px;
  border:1px solid var(--gold-soft);
  border-radius:1px;
  background:transparent;
  color:var(--paper);
  font-size:13px;
  letter-spacing:.14em;
  text-decoration:none;
  cursor:pointer;
  transition:background .25s, color .25s, border-color .25s;
}
.btn:active{ background:var(--gold); border-color:var(--gold); color:#17130f; }
.btn.ghost{ border-color:var(--line); color:var(--paper-dim); }
.venue-note{
  margin:20px auto 0;
  max-width:290px;
  font-size:11px;
  letter-spacing:.06em;
  color:var(--paper-faint);
  line-height:1.9;
}

/* ---------- 6. 结尾 ---------- */
.closing{
  justify-content:flex-end;
  padding-bottom:calc(72px + env(safe-area-inset-bottom));
  background:var(--bg-deep);
}
.closing .media img{ object-position:center 24%; }
.closing .media::after{
  background:linear-gradient(180deg,
      rgba(10,8,7,.62) 0%,
      rgba(10,8,7,.14) 26%,
      rgba(10,8,7,.58) 66%,
      rgba(10,8,7,.94) 92%,
      rgba(10,8,7,.99) 100%);
}
.closing-inner{
  position:relative; z-index:1;
  text-align:center;
  color:var(--paper);
  padding:0 30px;
}
.closing-line{
  margin:14px 0 0;
  font-size:clamp(23px,7.2vw,30px);
  line-height:1.82;
  letter-spacing:.16em;
  text-indent:.16em;
  text-shadow:0 2px 24px rgba(0,0,0,.5);
}
.closing-sign{
  margin:30px 0 0;
  font-family:var(--serif);
  font-size:15px;
  letter-spacing:.3em;
  text-indent:.3em;
}
.closing-date{
  margin:10px 0 0;
  font-size:10.5px;
  letter-spacing:.22em;
  color:rgba(244,236,224,.58);
}

/* ---------- 音乐按钮 ---------- */
.music{
  position:fixed;
  top:calc(14px + env(safe-area-inset-top));
  right:14px;
  z-index:40;
  width:38px; height:38px;
  display:none;              /* 有音乐文件时才显示 */
  align-items:center;
  justify-content:center;
  padding:0;
  border:1px solid rgba(244,236,224,.26);
  border-radius:50%;
  background:rgba(18,16,14,.42);
  color:var(--paper);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  cursor:pointer;
}
.music.on{ display:flex; }
.music svg{ width:19px; height:19px; }
.music.playing svg{ animation:spin 6s linear infinite; }
@keyframes spin{ to{ transform:rotate(360deg); } }

/* ---------- 分页圆点 ---------- */
.dots{
  position:fixed;
  right:7px; top:50%;
  transform:translateY(-50%);
  z-index:30;
  display:flex;
  flex-direction:column;
  gap:9px;
  padding:2px;
}
.dots button{
  width:5px; height:5px;
  padding:0;
  border:0;
  border-radius:50%;
  background:rgba(244,236,224,.24);
  cursor:pointer;
  transition:background .3s, transform .3s;
}
.dots button.active{ background:var(--gold); transform:scale(1.5); }

/* ---------- 微信转发提示 ---------- */
.share-tip{
  position:fixed;
  left:50%; bottom:calc(22px + env(safe-area-inset-bottom));
  transform:translateX(-50%);
  z-index:45;
  padding:9px 16px;
  border-radius:999px;
  background:rgba(244,236,224,.94);
  color:#17130f;
  font-size:11.5px;
  letter-spacing:.05em;
  white-space:nowrap;
  box-shadow:0 10px 26px rgba(0,0,0,.4);
  animation:tipIn .5s ease both;
}
.share-tip b{ color:#8a6a3c; font-weight:600; }
@keyframes tipIn{ from{ opacity:0; transform:translate(-50%,8px); } }

/* ---------- 开场遮罩 ---------- */
.gate{
  position:fixed; inset:0;
  z-index:90;
  display:flex;
  align-items:center;
  justify-content:center;
  background:#0d0b09;
  color:var(--paper);
  transition:opacity .7s ease, visibility .7s;
}
.gate.hide{ opacity:0; visibility:hidden; pointer-events:none; }
.gate-inner{ text-align:center; padding:0 30px; }
.gate-eyebrow{
  margin:0 0 22px;
  font-size:9px;
  letter-spacing:.4em;
  text-indent:.4em;
  color:rgba(201,173,128,.8);
}
.gate-names{
  margin:0;
  font-family:var(--serif);
  font-size:clamp(30px,9.4vw,38px);
  letter-spacing:.12em;
  text-indent:.12em;
  color:var(--paper);
}
.gate-names i{ font-style:normal; font-size:.5em; margin:0 .3em; color:var(--gold); }
.gate-date{
  margin:14px 0 0;
  font-size:12px;
  letter-spacing:.34em;
  text-indent:.34em;
  color:rgba(244,236,224,.55);
}
.gate-open{
  margin:44px 0 0;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 26px;
  border:1px solid rgba(201,173,128,.6);
  border-radius:999px;
  background:transparent;
  color:var(--paper);
  font-size:13px;
  letter-spacing:.24em;
  text-indent:.24em;
  cursor:pointer;
  transition:background .3s, color .3s;
}
.gate-open svg{ width:15px; height:15px; animation:bob 1.9s ease-in-out infinite; }
.gate-open:active{ background:var(--gold); border-color:var(--gold); color:#17130f; }
@keyframes bob{
  0%,100%{ transform:translateY(-2px); }
  50%{ transform:translateY(2px); }
}
.gate-tip{
  margin:26px 0 0;
  font-size:10px;
  letter-spacing:.08em;
  color:rgba(244,236,224,.32);
  line-height:1.9;
}

/* ---------- 小屏 / 矮屏适配 ---------- */
@media (max-height:640px){
  .countdown{ margin:22px 0 12px; }
  .letter{ padding:20px 22px; }
  .letter-body{ margin-bottom:12px; line-height:1.9; }
  .invite-word{ margin:16px 0 14px; }
  .gate-open{ margin-top:30px; }
}
@media (max-width:360px){
  .dots{ display:none; }
  .venue-inner{ padding-left:20px; padding-right:20px; }
}
/* 超小屏（320 宽）避免邀请语出现单字孤行 */
@media (max-width:340px){
  .invite-word{ font-size:12px; letter-spacing:0; }
  .letter{ padding-left:14px; padding-right:14px; }
  .letter-body{ font-size:13px; }
}
/* 横屏手机：避免内容被裁切 */
@media (orientation:landscape) and (max-height:520px){
  .page{ min-height:120vh; }
}

@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  .scroll-hint i, .gate-open svg, .music.playing svg{ animation:none; }
}