/* ==========================================================================
   BoBo & Zoya · 订婚邀请函
   assets/css/style.css
   —— 结构：0 变量 / 1 基础 / 2 氛围层 / 3 开场 / 4 音乐 / 5 导航
             6 通用排版 / 7 封面 / 8 序章 / 9 故事 / 10 邀请 / 11 回执
             12 动效 / 13 宽屏（≥900px）
   ========================================================================== */

/* ── 0 · 变量 ───────────────────────────────────────────────────────────── */
:root{
  --paper:#faf7f2;
  --paper-2:#f3ece3;
  --ink:#2b2320;
  --ink-2:#6b5c55;
  --ink-3:#9d8f88;
  --wine:#5a1f26;
  --vinyl:#2a1216;
  --red:#d4362a;
  --red-soft:#e8776b;
  --blue:#7ba4d6;
  --gold:#c2a05e;
  --line:rgba(43,35,32,.12);
  --shadow-s:0 4px 16px rgba(70,40,35,.08);
  --shadow-m:0 14px 40px rgba(70,40,35,.13);
  --shadow-l:0 30px 80px rgba(70,40,35,.20);
  --pad:clamp(20px,5vw,40px);

  --f-serif:"Songti SC","STSong","Source Han Serif SC","Noto Serif CJK SC","Noto Serif SC","Source Han Serif CN",serif;
  --f-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-lat:"Optima","Palatino Linotype","Book Antiqua",Georgia,serif;

  --spin:7.5s;
}

/* ── 1 · 基础 ───────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--f-sans);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow:hidden;
}
img{max-width:100%;display:block}
button{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
svg{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

.deck{
  height:100svh;
  overflow-y:auto;
  overflow-x:hidden;
  scroll-snap-type:y proximity;
  scroll-behavior:smooth;
  -webkit-overflow-scrolling:touch;
}
.scene{
  position:relative;
  min-height:100svh;
  scroll-snap-align:start;
  display:flex;
  align-items:center;
  padding:clamp(52px,7svh,92px) var(--pad) calc(clamp(52px,7svh,92px) + 44px + env(safe-area-inset-bottom,0px));
}
.wrap{position:relative;z-index:3;width:100%;max-width:1180px;margin:0 auto}

/* 背景基调 */
.scene::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:
    radial-gradient(120% 80% at 50% -10%,#fffdfa 0%,var(--paper) 46%,var(--paper-2) 100%);
}
.scene--story::before{background:radial-gradient(120% 80% at 50% 0%,#fffdfa,var(--paper) 60%,#f0e7dd)}
.scene--rsvp::before{background:linear-gradient(180deg,var(--paper) 0%,#f4ebe1 100%)}

/* ── 2 · 氛围层 ─────────────────────────────────────────────────────────── */
.grain{
  position:fixed;inset:0;z-index:70;pointer-events:none;opacity:.30;
  mix-blend-mode:multiply;
  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='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.42'/%3E%3C/svg%3E");
  animation:grainShift 1.1s steps(3) infinite;
}
@keyframes grainShift{
  0%{transform:translate(0,0)}33%{transform:translate(-3px,2px)}66%{transform:translate(2px,-3px)}100%{transform:translate(0,0)}
}
.petals{position:fixed;inset:0;z-index:2;pointer-events:none;overflow:hidden;opacity:.55}
.petals i{
  position:absolute;top:-8vh;width:9px;height:9px;opacity:0;
  color:var(--red-soft);
  animation:petalFall linear infinite;
}
.petals i::before{
  content:"";display:block;width:100%;height:100%;
  background:currentColor;
  clip-path:path("M4.5 9C1.8 6.6 0 5 0 3.1 0 1.6 1.2.4 2.7.4c.8 0 1.5.4 1.8.9.3-.5 1-.9 1.8-.9C7.8.4 9 1.6 9 3.1 9 5 7.2 6.6 4.5 9Z");
  border-radius:2px;
}
.petals i:nth-child(3n){color:var(--blue);opacity:.5}
.petals i:nth-child(4n){color:var(--gold)}
@keyframes petalFall{
  0%{opacity:0;transform:translate3d(0,0,0) rotate(0deg)}
  8%{opacity:.75}
  92%{opacity:.5}
  100%{opacity:0;transform:translate3d(var(--dx,30px),112svh,0) rotate(560deg)}
}

/* ── 3 · 开场遮罩 ───────────────────────────────────────────────────────── */
.opening{
  position:fixed;inset:0;z-index:120;
  display:flex;align-items:center;justify-content:center;
  padding:var(--pad);
  background:radial-gradient(90% 70% at 50% 34%,#fffdf9,var(--paper) 55%,#efe5da);
  transition:opacity .9s ease,visibility .9s;
}
.opening.is-gone{opacity:0;visibility:hidden;pointer-events:none}
.opening-inner{text-align:center;max-width:560px}
.opening-disc{
  width:clamp(120px,34vw,168px);aspect-ratio:1;margin:0 auto clamp(24px,5vh,38px);
  border-radius:50%;padding:14px;
  background:
    repeating-radial-gradient(circle at 50% 50%,rgba(255,255,255,.07) 0 1px,rgba(0,0,0,0) 1px 3.2px),
    radial-gradient(circle at 38% 32%,#5b2932,#2a1216 62%);
  box-shadow:var(--shadow-m),inset 0 0 30px rgba(0,0,0,.5);
  animation:spin 14s linear infinite;
}
.opening-disc img{border-radius:50%}
.opening-kicker{
  margin:0 0 12px;font-family:var(--f-lat);letter-spacing:.34em;
  font-size:11px;color:var(--ink-3);text-transform:uppercase;
}
.opening-title{
  margin:0 0 clamp(26px,5vh,40px);
  font-family:var(--f-serif);font-weight:600;
  font-size:clamp(21px,5.6vw,30px);line-height:1.75;letter-spacing:.06em;
  color:var(--wine);
}
.opening-btn{
  display:inline-flex;align-items:center;gap:11px;
  padding:14px 26px;border:0;border-radius:999px;cursor:pointer;
  background:var(--wine);color:#fff;
  font-size:15px;letter-spacing:.08em;
  box-shadow:0 12px 30px rgba(90,31,38,.30);
  transition:transform .25s,box-shadow .25s;
  animation:btnPulse 2.6s ease-in-out infinite;
}
.opening-btn:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(90,31,38,.38)}
.opening-btn-ico{
  width:9px;height:11px;background:currentColor;flex:none;
  clip-path:polygon(0 0,100% 50%,0 100%);
}
@keyframes btnPulse{0%,100%{box-shadow:0 12px 30px rgba(90,31,38,.28)}50%{box-shadow:0 12px 30px rgba(90,31,38,.28),0 0 0 12px rgba(90,31,38,.06)}}
.opening-note{margin:16px 0 0;font-size:12px;color:var(--ink-3);letter-spacing:.12em}

/* ── 4 · 音乐控制 ───────────────────────────────────────────────────────── */
.music-pill{
  position:fixed;z-index:80;
  right:clamp(14px,3vw,26px);
  bottom:calc(clamp(14px,3vh,26px) + env(safe-area-inset-bottom,0px));
  display:flex;align-items:center;gap:10px;
  padding:7px 14px 7px 7px;
  border:1px solid var(--line);border-radius:999px;cursor:pointer;
  background:rgba(255,253,250,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-s);
  transition:transform .25s,box-shadow .25s,opacity .4s;
}
.music-pill:hover{transform:translateY(-2px);box-shadow:var(--shadow-m)}
.music-disc{
  width:32px;height:32px;flex:none;border-radius:50%;overflow:hidden;
  background:radial-gradient(circle at 38% 32%,#5b2932,#2a1216 62%);
  padding:7px;animation:spin 4.5s linear infinite;animation-play-state:paused;
}
.music-pill.is-playing .music-disc{animation-play-state:running}
.music-disc img{border-radius:50%}
.music-meta{display:flex;flex-direction:column;line-height:1.2;text-align:left}
.music-meta b{font-size:12px;font-weight:600;letter-spacing:.04em}
.music-meta i{font-size:10px;font-style:normal;color:var(--ink-3);letter-spacing:.06em}
.eq{display:flex;align-items:flex-end;gap:2px;height:14px;margin-left:2px}
.eq i{width:2px;height:4px;background:var(--red);border-radius:1px;opacity:.3}
.music-pill.is-playing .eq i{opacity:1;animation:eq .9s ease-in-out infinite}
.music-pill.is-playing .eq i:nth-child(2){animation-duration:.62s}
.music-pill.is-playing .eq i:nth-child(3){animation-duration:1.1s}
.music-pill.is-playing .eq i:nth-child(4){animation-duration:.78s}
@keyframes eq{0%,100%{height:4px}50%{height:14px}}

/* ── 5 · 章节导航 ───────────────────────────────────────────────────────── */
.dots{
  position:fixed;z-index:80;
  left:50%;transform:translateX(-50%);
  bottom:calc(clamp(14px,3vh,26px) + env(safe-area-inset-bottom,0px));
  display:flex;gap:9px;padding:8px 12px;border-radius:999px;
  background:rgba(255,253,250,.8);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.dots a{display:block;padding:4px}
.dots span{display:block;width:7px;height:7px;border-radius:50%;background:rgba(43,35,32,.22);transition:.35s}
.dots a.is-on span{background:var(--wine);transform:scale(1.35)}

/* ── 6 · 通用排版 ───────────────────────────────────────────────────────── */
.kicker{
  margin:0 0 14px;font-family:var(--f-lat);
  font-size:11px;letter-spacing:.32em;text-transform:uppercase;color:var(--ink-3);
}
.scene-title{
  margin:0 0 18px;font-family:var(--f-serif);font-weight:600;
  font-size:clamp(26px,6.6vw,42px);line-height:1.5;letter-spacing:.05em;color:var(--wine);
}
.lede{margin:0 0 22px;font-size:clamp(13.5px,3.5vw,15.5px);line-height:2.05;color:var(--ink-2);letter-spacing:.03em}
.scene-head{text-align:center;margin-bottom:clamp(26px,5vh,44px)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border:1px solid var(--line);border-radius:999px;cursor:pointer;
  background:rgba(255,255,255,.7);color:var(--ink);
  font-size:13.5px;letter-spacing:.06em;
  transition:transform .22s,box-shadow .22s,background .22s;
}
.btn svg{width:16px;height:16px;stroke-width:1.5}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-s);background:#fff}
.btn--primary{background:var(--wine);border-color:var(--wine);color:#fff}
.btn--primary:hover{background:#6d2730;box-shadow:0 12px 28px rgba(90,31,38,.28)}
.btn--wide{width:100%;padding:15px 20px;font-size:15px}
.btn--wide i{font-style:normal;transition:transform .25s}
.btn--wide:hover i{transform:translateX(4px)}

.toast{
  position:fixed;left:50%;bottom:96px;transform:translate(-50%,14px);
  z-index:130;padding:10px 20px;border-radius:999px;
  background:rgba(43,35,32,.92);color:#fff;font-size:13px;letter-spacing:.05em;
  opacity:0;pointer-events:none;transition:.3s;
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ── 7 · 封面 ───────────────────────────────────────────────────────────── */
.cover-grid{display:flex;flex-direction:column;align-items:center;gap:clamp(16px,3svh,32px)}

.cover-stage{
  width:100%;display:flex;justify-content:center;
  transform:translate3d(calc(var(--px,0px)*.6),calc(var(--py,0px)*.6),0);
  transition:transform .5s cubic-bezier(.2,.7,.3,1);
}
/* 整张心形唱片：不拆图层，电话线保持相连 */
.turntable{
  position:relative;
  width:min(90vw,440px);
  aspect-ratio:50/43;
  animation:heartFloat 8s ease-in-out infinite;
}
.heart-art{
  width:100%;
  filter:drop-shadow(0 22px 40px rgba(70,40,35,.16));
}
/* 中心贴纸——真正在转的部分 */
.label-hub{
  position:absolute;left:50.95%;top:57.7%;width:20.4%;aspect-ratio:1;
  transform:translate(-50%,-50%);
}
.label-hub img{
  width:100%;border-radius:50%;
  animation:spin var(--spin) linear infinite;
  animation-play-state:paused;
  will-change:transform;
}
/* 贴纸外一圈随之转动的纹路光泽 */
.groove-hub{
  position:absolute;left:50.95%;top:57.7%;width:29.6%;aspect-ratio:1;
  transform:translate(-50%,-50%);pointer-events:none;
}
.groove{
  display:block;width:100%;height:100%;border-radius:50%;
  background:conic-gradient(from 0deg,
    rgba(255,255,255,0) 0deg,
    rgba(255,238,232,.42) 26deg,
    rgba(255,255,255,0) 66deg,
    rgba(255,255,255,0) 176deg,
    rgba(255,232,224,.30) 204deg,
    rgba(255,255,255,0) 244deg,
    rgba(255,255,255,0) 360deg);
  -webkit-mask:radial-gradient(circle,transparent 0 35%,#000 40% 88%,transparent 100%);
  mask:radial-gradient(circle,transparent 0 35%,#000 40% 88%,transparent 100%);
  mix-blend-mode:screen;
  animation:spin var(--spin) linear infinite;
  animation-play-state:paused;
}
.is-playing .label-hub img,
.is-playing .groove{animation-play-state:running}
@keyframes heartFloat{
  0%,100%{transform:translateY(0) rotate(-.9deg)}
  50%{transform:translateY(-14px) rotate(.9deg)}
}

.cover-copy{text-align:center;max-width:520px}
.cover-date{
  margin-bottom:18px;
  font-family:var(--f-serif);
  font-size:clamp(17px,4.5vw,22px);
  font-weight:600;
  letter-spacing:.16em;
  color:var(--wine);
}
.cover-title{margin:0 0 14px;font-family:var(--f-serif);font-weight:600;color:var(--wine)}
.cover-title span{display:block;font-size:clamp(18px,4.6vw,24px);letter-spacing:.22em;opacity:.72}
.cover-title em{
  display:block;margin-top:6px;font-style:normal;
  font-size:clamp(23px,6vw,34px);letter-spacing:.07em;line-height:1.55;
}
.cover-names{
  margin:0 0 18px;font-family:var(--f-serif);
  font-size:clamp(15px,4vw,19px);letter-spacing:.14em;color:var(--ink);
}
.cover-names span{font-family:var(--f-lat);letter-spacing:.08em;color:var(--ink-2)}
.cover-names b{margin:0 8px;color:var(--red);font-weight:400}

.countdown{display:flex;justify-content:center;gap:clamp(10px,3vw,20px)}
.countdown div{
  min-width:56px;padding:9px 6px 7px;border-radius:12px;
  background:rgba(255,255,255,.66);border:1px solid var(--line);
}
.countdown b{display:block;font-family:var(--f-lat);font-size:clamp(19px,5vw,25px);line-height:1.1;color:var(--wine);font-variant-numeric:tabular-nums}
.countdown i{display:block;margin-top:3px;font-style:normal;font-size:10px;letter-spacing:.2em;color:var(--ink-3)}
.countdown-note{margin:10px 0 0;font-size:11.5px;letter-spacing:.2em;color:var(--ink-3)}

.scroll-cue{
  display:inline-flex;flex-direction:column;align-items:center;gap:6px;
  margin-top:clamp(16px,3svh,28px);
  font-size:11.5px;letter-spacing:.2em;color:var(--ink-3);
}
.scroll-cue i{
  width:1px;height:26px;background:linear-gradient(var(--ink-3),transparent);
  animation:cue 1.9s ease-in-out infinite;
}
@keyframes cue{0%,100%{transform:scaleY(.5);opacity:.4}50%{transform:scaleY(1);opacity:1}}

/* ── 8 · 序章 ───────────────────────────────────────────────────────────── */
.prologue-grid{display:flex;flex-direction:column;gap:clamp(20px,4svh,36px);align-items:center}
.prologue-copy{text-align:center;max-width:520px}
.films{
  position:relative;display:flex;justify-content:center;align-items:flex-start;
  gap:clamp(6px,2vw,22px);
  width:100%;max-width:520px;height:clamp(260px,42svh,470px);
  transform:translate3d(calc(var(--px,0px)*.4),calc(var(--py,0px)*.4),0);
  transition:transform .5s cubic-bezier(.2,.7,.3,1);
}
.film{margin:0;height:100%;filter:drop-shadow(0 16px 30px rgba(70,40,35,.20))}
.film img{height:100%;width:auto}
.film--l{animation:filmSway 7s ease-in-out infinite;transform-origin:50% 0}
.film--r{animation:filmSway 8.4s ease-in-out infinite reverse;transform-origin:50% 0}
@keyframes filmSway{0%,100%{transform:rotate(-1.6deg) translateY(0)}50%{transform:rotate(1.6deg) translateY(-8px)}}
.film-beam{
  position:absolute;inset:-6% -12%;pointer-events:none;z-index:2;
  background:linear-gradient(104deg,rgba(255,255,255,0) 42%,rgba(255,255,255,.55) 50%,rgba(255,255,255,0) 58%);
  animation:beam 6.5s ease-in-out infinite;
}
@keyframes beam{0%,100%{transform:translateX(-40%);opacity:0}45%{opacity:.9}55%{opacity:.9}100%{transform:translateX(40%)}}

/* ── 9 · 故事线 ─────────────────────────────────────────────────────────── */
.timeline{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:clamp(16px,3svh,28px);position:relative}
.timeline::before{
  content:"";position:absolute;left:calc(clamp(76px,22vw,96px) / 2);top:12px;bottom:12px;width:1px;
  background:repeating-linear-gradient(var(--line) 0 5px,transparent 5px 11px);
}
.tl-card{display:flex;gap:clamp(14px,4vw,22px);align-items:center;position:relative}
.tl-photo{position:relative;flex:none;width:clamp(76px,22vw,96px);aspect-ratio:1}
.tl-photo img{width:100%;height:100%;object-fit:cover;border-radius:50%;box-shadow:var(--shadow-s)}
.tl-frame{
  position:absolute;inset:-6px;border-radius:50%;
  border:1px solid var(--line);
  background:conic-gradient(from 0deg,transparent 0 82%,rgba(212,54,42,.55) 90%,transparent 100%);
  -webkit-mask:radial-gradient(circle,transparent 0 calc(50% - 2px),#000 calc(50% - 1px));
  mask:radial-gradient(circle,transparent 0 calc(50% - 2px),#000 calc(50% - 1px));
  animation:spin 16s linear infinite;
}
.tl-text{flex:1}
.tl-year{
  margin:0 0 6px;display:flex;align-items:baseline;gap:10px;
  font-family:var(--f-lat);font-size:clamp(20px,5.4vw,26px);color:var(--wine);letter-spacing:.06em;
}
.tl-year i{
  font-style:normal;font-family:var(--f-serif);font-size:14px;letter-spacing:.24em;color:var(--ink);
  padding-left:10px;border-left:1px solid var(--line);
}
.tl-text p:last-child{margin:0;font-size:13.5px;line-height:1.95;color:var(--ink-2);letter-spacing:.02em}
.story-foot{
  margin:clamp(24px,5svh,40px) 0 0;text-align:center;
  font-family:var(--f-serif);font-size:clamp(14px,3.8vw,17px);line-height:2;letter-spacing:.08em;color:var(--ink-2);
}
.story-foot b{display:block;margin-top:4px;color:var(--wine);font-weight:600}

/* ── 10 · 邀请函 ────────────────────────────────────────────────────────── */
.invite-grid{display:flex;flex-direction:column;gap:clamp(18px,3svh,36px);align-items:center}
.poster{
  margin:0;position:relative;display:flex;flex-direction:column;align-items:center;gap:10px;
  transform:translate3d(calc(var(--px,0px)*.5),calc(var(--py,0px)*.5),0);
  transition:transform .5s cubic-bezier(.2,.7,.3,1);
}
.poster-btn{
  position:relative;display:block;padding:0;border:1px solid rgba(43,35,32,.08);cursor:zoom-in;
  border-radius:8px;overflow:hidden;background:#fff;
  box-shadow:var(--shadow-l);
  transition:transform .3s,box-shadow .3s;
}
.poster-btn:focus-visible{outline:2px solid var(--wine);outline-offset:3px}
.poster-btn:hover{transform:translateY(-3px)}
.poster img{width:auto;max-height:min(46svh,430px);object-fit:contain}
.poster figcaption{font-size:11px;letter-spacing:.18em;color:var(--ink-3)}
.poster-glow{
  position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(116deg,rgba(255,255,255,0) 40%,rgba(255,255,255,.42) 50%,rgba(255,255,255,0) 60%);
  transform:translateX(-60%);
  animation:beam 7.5s ease-in-out infinite;
}
.invite-copy{text-align:center;max-width:520px;width:100%}
.scene--invite .scene-title{font-size:clamp(24px,5.8vw,40px);margin-bottom:12px}
.scene--invite .lede{margin-bottom:16px;line-height:1.9}
.facts{margin:0 0 18px;display:flex;flex-direction:column;gap:10px;text-align:left}
.facts > div{
  display:flex;gap:16px;align-items:flex-start;
  padding:12px 16px;border-radius:14px;
  background:rgba(255,255,255,.6);border:1px solid var(--line);
}
.facts dt{
  flex:none;width:34px;font-family:var(--f-serif);font-size:12.5px;letter-spacing:.16em;
  color:var(--wine);padding-top:3px;
}
.facts dd{margin:0}
.facts dd b{display:block;font-family:var(--f-serif);font-size:clamp(15px,4vw,17px);letter-spacing:.06em;font-weight:600}
.facts dd span{display:block;margin-top:4px;font-size:12px;letter-spacing:.04em;color:var(--ink-3)}
.invite-days{
  display:flex;align-items:baseline;justify-content:center;gap:12px;
  margin:0 0 clamp(20px,3.5svh,32px);
}
.invite-days span{
  font-family:var(--f-lat);font-size:clamp(56px,15vw,86px);line-height:.9;
  color:var(--wine);font-variant-numeric:tabular-nums;
}
.invite-days i{
  font-style:normal;font-family:var(--f-serif);
  font-size:clamp(14px,3.6vw,17px);line-height:1.6;letter-spacing:.16em;color:var(--ink-2);
  text-align:left;
}
.invite-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}

/* ── 11 · 宾客回执 ──────────────────────────────────────────────────────── */
.scene--rsvp{flex-direction:column;justify-content:center}
.rsvp-grid{display:flex;flex-direction:column;gap:clamp(20px,4svh,36px)}
.rsvp-aside{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:14px 16px;justify-content:center;text-align:center}
.rsvp-photo{margin:0;width:clamp(120px,32vw,160px)}
.rsvp-photo .poster-btn{border-radius:10px}
.rsvp-photo img{width:100%}
.rsvp-datecard{
  display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:14px;
  background:rgba(255,255,255,.7);border:1px solid var(--line);
}
.rsvp-datecard b{font-family:var(--f-serif);font-size:26px;line-height:1;color:var(--wine);letter-spacing:.08em}
.rsvp-datecard span{font-family:var(--f-serif);font-size:12px;letter-spacing:.16em;color:var(--ink-3)}
.rsvp-datecard i{display:block;font-style:normal;margin-top:3px}
.rsvp-quote{
  flex:0 0 100%;margin:0;font-family:var(--f-serif);font-size:13px;line-height:1.95;
  letter-spacing:.06em;color:var(--ink-2);
}

.rsvp-main{max-width:620px;margin:0 auto;width:100%;text-align:center}
.form{text-align:left;display:flex;flex-direction:column;gap:14px;margin-top:6px}
.form[hidden],.form-done[hidden]{display:none}
.grid2{display:flex;flex-direction:column;gap:14px}
.field{display:block;margin:0;padding:0;border:0}
.field > span,.field legend{
  display:block;margin:0 0 7px;padding:0;
  font-size:12px;letter-spacing:.14em;color:var(--ink-2);
}
.field i{color:var(--red);font-style:normal}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.78);
  font:inherit;font-size:15px;color:var(--ink);
  transition:border-color .2s,box-shadow .2s,background .2s;
  -webkit-appearance:none;appearance:none;
}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--ink-3) 50%),linear-gradient(135deg,var(--ink-3) 50%,transparent 50%);background-position:calc(100% - 19px) 22px,calc(100% - 14px) 22px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field textarea{resize:vertical;min-height:84px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(90,31,38,.45);background:#fff;
  box-shadow:0 0 0 4px rgba(90,31,38,.07);
}
.segment{display:flex;gap:8px}
.segment button{
  flex:1;padding:12px 6px;border-radius:12px;cursor:pointer;
  border:1px solid var(--line);background:rgba(255,255,255,.6);
  font-size:13.5px;letter-spacing:.04em;color:var(--ink-2);
  transition:.22s;
}
.segment button.is-on{background:var(--wine);border-color:var(--wine);color:#fff;box-shadow:0 8px 20px rgba(90,31,38,.22)}
.honey{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-msg{margin:0;padding:11px 14px;border-radius:10px;background:rgba(212,54,42,.08);color:#9b2b22;font-size:13px}

.form-done{padding:clamp(26px,5vh,44px) 20px;text-align:center;position:relative}
.form-done h3{margin:6px 0 10px;font-family:var(--f-serif);font-size:24px;color:var(--wine);letter-spacing:.08em}
.form-done p{margin:0;font-size:13.5px;line-height:1.9;color:var(--ink-2)}
.rings{position:relative;display:block;width:56px;height:56px;margin:0 auto 18px}
.rings i{position:absolute;inset:0;border-radius:50%;border:1px solid rgba(90,31,38,.4);animation:ring 2.6s ease-out infinite}
.rings i:nth-child(2){animation-delay:.7s}
.rings i:nth-child(3){animation-delay:1.4s}
@keyframes ring{0%{transform:scale(.4);opacity:0}25%{opacity:.9}100%{transform:scale(1.5);opacity:0}}
.done-actions{display:flex;gap:10px;justify-content:center;margin-top:22px;flex-wrap:wrap}

.foot{
  position:relative;z-index:3;width:100%;margin-top:clamp(28px,5svh,48px);
  display:flex;flex-direction:column;align-items:center;gap:6px;
  pointer-events:none;
}
.foot img{width:40px;border-radius:50%;opacity:.55}
.foot p{margin:0;font-size:10.5px;letter-spacing:.16em;color:var(--ink-3)}

/* ── 12 · 动效 ──────────────────────────────────────────────────────────── */
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes bob{
  0%,100%{transform:translateY(0) rotate(-2deg)}
  50%{transform:translateY(-11px) rotate(2deg)}
}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .95s cubic-bezier(.2,.7,.3,1),transform .95s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}
.tl-card.reveal:nth-child(2){transition-delay:.12s}
.tl-card.reveal:nth-child(3){transition-delay:.24s}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  .deck{scroll-behavior:auto}
}

/* ── 13 · 宽屏 ──────────────────────────────────────────────────────────── */
@media (min-width:900px){
  :root{--pad:clamp(40px,5vw,72px)}

  .dots{
    left:auto;right:26px;top:50%;bottom:auto;
    transform:translateY(-50%);flex-direction:column;gap:14px;
    padding:14px 10px;
  }
  .dots a{position:relative}
  .dots a::after{
    content:attr(data-label);
    position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%);
    padding:3px 9px;border-radius:6px;white-space:nowrap;
    background:rgba(43,35,32,.9);color:#fff;font-size:11px;letter-spacing:.1em;
    opacity:0;pointer-events:none;transition:.25s;
  }
  .dots a:hover::after{opacity:1}
  .music-pill{right:74px}

  /* 封面：左唱机 右文案 */
  .cover-grid{
    flex-direction:row;align-items:center;justify-content:space-between;
    gap:clamp(40px,6vw,90px);
  }
  .cover-stage{flex:0 0 46%;justify-content:flex-start}
  .turntable{width:min(43vw,570px)}
  .cover-copy{flex:1;text-align:left;max-width:560px}
  .cover-title span{letter-spacing:.3em}
  .cover-title em{font-size:clamp(32px,3.2vw,46px)}
  .cover-title span{font-size:clamp(20px,1.5vw,24px)}
  .countdown{justify-content:flex-start}
  .countdown div{min-width:72px;padding:12px 10px 10px}
  .countdown-note{letter-spacing:.24em}
  .scroll-cue{align-items:flex-start}

  /* 序章：左文案 右胶片 */
  .prologue-grid{flex-direction:row;align-items:center;gap:clamp(40px,6vw,90px)}
  .prologue-copy{flex:1;text-align:left;max-width:460px}
  .films{flex:0 0 48%;max-width:none;gap:clamp(14px,2.5vw,34px);height:clamp(340px,64svh,620px);justify-content:center}

  /* 故事：三列 */
  .timeline{flex-direction:row;gap:clamp(20px,3vw,38px)}
  .timeline::before{left:6%;right:6%;top:50%;bottom:auto;width:auto;height:1px;transform:translateY(-40px);
    background:repeating-linear-gradient(90deg,var(--line) 0 5px,transparent 5px 11px)}
  .tl-card{
    flex-direction:column;text-align:center;flex:1;gap:16px;align-items:center;
    padding:clamp(24px,2.4vw,34px) clamp(18px,2vw,28px);border-radius:20px;
    background:rgba(255,255,255,.55);border:1px solid var(--line);
    box-shadow:var(--shadow-s);
    transition:transform .4s cubic-bezier(.2,.7,.3,1),box-shadow .4s,opacity .95s;
  }
  .tl-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m)}
  .tl-text{max-width:280px}
  .tl-photo{width:clamp(104px,9vw,124px)}
  .tl-photo img{border:5px solid var(--paper)}
  .tl-year{justify-content:center}
  .tl-text p:last-child{font-size:14px}

  /* 邀请：左海报 右信息 */
  .invite-grid{flex-direction:row;align-items:center;justify-content:center;gap:clamp(46px,7vw,110px)}
  .poster{flex:0 0 44%}
  .poster img{max-height:min(78svh,680px)}
  .invite-copy{flex:0 1 340px;text-align:left}
  .invite-actions{justify-content:flex-start;flex-direction:column;align-items:stretch;max-width:280px}
  .invite-days{justify-content:flex-start}
  .facts > div{padding:18px 22px}

  /* 回执：左侧图卡 右表单 */
  .rsvp-grid{flex-direction:row;align-items:center;gap:clamp(46px,6vw,80px)}
  .rsvp-aside{flex:0 0 32%;flex-direction:column;align-items:flex-start;gap:22px;text-align:left}
  .rsvp-photo{width:100%;max-width:290px}
  .rsvp-quote{font-size:14px}
  .rsvp-main{flex:1;text-align:left;margin:0}
  .grid2{flex-direction:row;gap:16px}
  .grid2 > *{flex:1}
  .foot{flex-direction:row;gap:14px;margin-top:38px}
  .scene{padding-bottom:clamp(52px,7svh,92px)}
}

@media (min-width:1400px){
  .wrap{max-width:1300px}
  .turntable{width:min(42vw,600px)}
  .cover-copy{max-width:600px}
}
@media (min-width:1700px){
  .wrap{max-width:1440px}
  .turntable{width:min(38vw,680px)}
  .cover-title em{font-size:52px}
  .cover-title span{font-size:26px}
  .cover-names{font-size:21px}
  .lede{font-size:16.5px}
}

/* 矮屏（横屏手机 / 小笔记本）收紧一点 */
@media (max-height:680px) and (min-width:900px){
  .turntable{width:min(36vw,400px)}
  .scene{padding-block:48px}
}

/* ── 14 · 请柬放大 ─────────────────────────────────────────────────────── */
.lightbox{
  position:fixed;inset:0;z-index:140;display:flex;align-items:center;justify-content:center;
  padding:clamp(20px,5vw,52px);
  background:rgba(30,20,18,.86);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  animation:fadeIn .3s ease;
  cursor:zoom-out;
}
.lightbox[hidden]{display:none}
.lightbox img{
  max-width:100%;max-height:100%;border-radius:6px;
  box-shadow:0 30px 90px rgba(0,0,0,.5);
  animation:popIn .42s cubic-bezier(.2,.8,.3,1);
}
.lightbox-close{
  position:absolute;top:clamp(14px,3vh,28px);right:clamp(14px,3vw,28px);
  width:40px;height:40px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.16);color:#fff;font-size:24px;line-height:1;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes popIn{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:none}}