/* =========================================================
   千早愛音 非公式応援サイト — Demo stylesheet
   ========================================================= */

:root{
  /* --coral 使用官方成员色 #FF8899 */
  --coral:#ff8899;
  --coral-deep:#e0496f;
  --coral-soft:#ffd3de;
  --sky:#7fd8e8;
  --sky-soft:#d8f3f9;
  --ink:#221d2c;
  --ink-soft:#635b70;
  --bg:#fff7f9;
  --bg-alt:#ffeff5;
  --card:#ffffff;
  --line:rgba(34,29,44,.10);
  --shadow-sm:0 8px 22px -14px rgba(227,76,120,.55);
  --shadow-lg:0 28px 60px -34px rgba(150,52,90,.55);
  --radius:22px;
  --radius-sm:14px;
  --max:1120px;
  --font:"Hiragino Maru Gothic ProN","Yu Gothic","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

[data-theme="night"]{
  --ink:#f7eef3;
  --ink-soft:#bfb2c4;
  --bg:#121020;
  --bg-alt:#1a1630;
  --card:#1e1934;
  --line:rgba(255,255,255,.12);
  --coral-soft:#5b2f45;
  --sky-soft:#1f3d4a;
  --shadow-sm:0 10px 26px -16px rgba(0,0,0,.9);
  --shadow-lg:0 30px 70px -40px rgba(0,0,0,.95);
}

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

html{scroll-behavior:smooth}

/* 锚点跳转时给吸顶导航留出空间 */
[id]{scroll-margin-top:92px}

body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  transition:background .35s ease,color .35s ease;
}

img,svg{max-width:100%;display:block}

a{color:inherit;text-decoration:none}

h1,h2,h3{line-height:1.3;margin:0}

.wrap{width:min(100% - 2.5rem,var(--max));margin-inline:auto}

.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;
}

.skip-link{
  position:absolute;left:1rem;top:-4rem;z-index:200;
  background:var(--coral);color:#fff;padding:.6rem 1rem;border-radius:10px;
  transition:top .2s ease;
}
.skip-link:focus{top:1rem}

/* ---------------- Header ---------------- */
.site-header{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(14px);
  background:color-mix(in srgb,var(--bg) 82%,transparent);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,box-shadow .3s ease,background .3s ease;
}
.site-header.is-scrolled{
  border-color:var(--line);
  box-shadow:0 12px 30px -26px rgba(0,0,0,.6);
}
.header-inner{
  display:flex;align-items:center;gap:1rem;
  min-height:70px;
}

.brand{display:flex;align-items:center;gap:.7rem;margin-right:auto}
.brand-mark{
  display:grid;place-items:center;
  width:42px;height:42px;border-radius:14px;
  background:linear-gradient(140deg,var(--coral),#ff9fbb 60%,var(--sky));
  color:#fff;font-size:1.15rem;font-weight:700;
  box-shadow:var(--shadow-sm);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:.95rem;letter-spacing:.12em}
.brand-text small{font-size:.68rem;color:var(--ink-soft);letter-spacing:.04em}

.nav{display:flex;gap:.35rem}
.nav a{
  padding:.45rem .75rem;border-radius:999px;
  font-size:.9rem;color:var(--ink-soft);
  transition:color .2s ease,background .2s ease;
}
.nav a:hover{color:var(--ink);background:var(--coral-soft)}
.nav a.is-active{color:#fff;background:var(--coral)}

.header-actions{display:flex;gap:.4rem}
.icon-btn{
  width:40px;height:40px;border-radius:12px;cursor:pointer;
  border:1px solid var(--line);background:var(--card);color:var(--ink);
  font-size:1rem;display:grid;place-items:center;
  transition:transform .2s ease,border-color .2s ease;
}
.icon-btn:hover{transform:translateY(-2px);border-color:var(--coral)}
.nav-toggle{display:none}

/* ---------------- Hero ---------------- */
.hero{position:relative;overflow:hidden;padding:clamp(2.5rem,6vw,5rem) 0 clamp(3rem,7vw,6rem)}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.75}
.blob-1{width:520px;height:520px;left:-130px;top:-160px;background:radial-gradient(circle at 30% 30%,#ffb6cf,#ff8fb4 45%,transparent 70%)}
.blob-2{width:460px;height:460px;right:-120px;top:60px;background:radial-gradient(circle at 60% 40%,#a9e8f5,#7fd8e8 45%,transparent 72%)}
.strings{
  position:absolute;inset:auto -10% 8% -10%;height:180px;opacity:.28;
  background:repeating-linear-gradient(180deg,var(--coral) 0 1px,transparent 1px 26px);
  transform:rotate(-6deg);
  mask-image:linear-gradient(90deg,transparent,#000 25%,#000 75%,transparent);
}
.note{
  position:absolute;font-size:2rem;color:var(--coral);opacity:.5;
  animation:float 7s ease-in-out infinite;
}
.note-1{left:8%;top:22%}
.note-2{right:14%;top:14%;color:var(--sky);animation-delay:1.4s;font-size:2.6rem}
.note-3{left:46%;bottom:12%;animation-delay:2.6s}
@keyframes float{
  0%,100%{transform:translateY(0) rotate(-4deg)}
  50%{transform:translateY(-18px) rotate(6deg)}
}

.hero-inner{
  position:relative;display:grid;gap:clamp(2rem,5vw,4rem);
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  align-items:center;
}

.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  margin:0 0 1.1rem;padding:.35rem .9rem;
  border-radius:999px;border:1px solid var(--line);
  background:var(--card);
  font-size:.8rem;letter-spacing:.08em;color:var(--ink-soft);
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--coral);animation:pulse 2s infinite}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(255,111,145,.6)}
  50%{box-shadow:0 0 0 8px rgba(255,111,145,0)}
}

.hero h1{display:flex;flex-direction:column;gap:.35rem;margin-bottom:1.1rem}
.hero h1 .jp{
  font-size:clamp(2.9rem,7.5vw,4.6rem);font-weight:800;letter-spacing:.06em;
  background:linear-gradient(120deg,var(--coral-deep),var(--coral) 45%,#ff9ec4 70%,var(--sky));
  background-clip:text;-webkit-background-clip:text;color:transparent;
}
.hero h1 .romaji{
  font-size:clamp(.85rem,2vw,1.05rem);letter-spacing:.42em;
  color:var(--ink-soft);text-transform:uppercase;
}

.lead{max-width:34em;color:var(--ink-soft);font-size:1.02rem;margin:0 0 1.8rem}

.cta{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:2.2rem}
.btn{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.8rem 1.5rem;border-radius:999px;border:1px solid transparent;
  font-size:.95rem;font-weight:600;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--coral),var(--coral-deep));color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px -18px var(--coral-deep)}
.btn-ghost{border-color:var(--line);background:var(--card);color:var(--ink)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--coral);color:var(--coral-deep)}

.quick-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;
  margin:0;padding:0;list-style:none;
}
.quick-stats li{
  padding:.85rem .6rem;border-radius:var(--radius-sm);
  background:var(--card);border:1px solid var(--line);text-align:center;
}
.quick-stats b{display:block;font-size:1.15rem;color:var(--coral-deep)}
.quick-stats b small{font-size:.7rem}
.quick-stats span{font-size:.75rem;color:var(--ink-soft)}

.hero-art{position:relative;display:grid;justify-items:center;gap:1rem}
.art-card{
  position:relative;
  width:min(100%,460px);
  aspect-ratio:1/1;
  display:grid;place-items:center;
  transition:transform .5s cubic-bezier(.22,.8,.28,1);
}
.art-card:hover{transform:translateY(-6px) scale(1.015)}
.art-halo{
  position:absolute;inset:-6% -4% 4%;
  border-radius:50%;
  background:
    radial-gradient(circle at 50% 45%,rgba(255,255,255,.92),rgba(255,255,255,0) 62%),
    radial-gradient(circle at 50% 55%,rgba(255,173,196,.75),rgba(127,216,232,.35) 55%,transparent 72%);
  filter:blur(6px);
}
.art-standing{
  position:relative;z-index:1;
  width:100%;height:100%;object-fit:contain;
  filter:drop-shadow(0 26px 38px rgba(224,73,111,.32));
  animation:breathe 6s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}
.art-badge{
  position:absolute;top:1rem;right:1rem;
  padding:.3rem .8rem;border-radius:999px;
  background:var(--coral);color:#fff;font-weight:700;font-size:.85rem;letter-spacing:.1em;
  box-shadow:var(--shadow-sm);
}
.art-flag{
  position:absolute;top:1rem;left:1rem;
  padding:.28rem .7rem;border-radius:999px;
  background:color-mix(in srgb,var(--card) 78%,transparent);
  border:1px dashed var(--coral);
  color:var(--coral-deep);font-size:.7rem;letter-spacing:.08em;
  backdrop-filter:blur(6px);
}
.art-plate{
  position:absolute;z-index:2;left:.4rem;bottom:.4rem;
  display:flex;flex-direction:column;
  padding:.6rem 1rem;border-radius:16px;
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.art-plate strong{font-size:1.05rem;letter-spacing:.08em}
.art-plate span{font-size:.72rem;color:var(--ink-soft)}

.eq{display:flex;align-items:flex-end;gap:4px;height:44px}
.eq i{
  display:block;width:6px;border-radius:99px;
  background:linear-gradient(180deg,var(--coral),var(--sky));
  animation:bar 1.1s ease-in-out infinite;
}
.eq i:nth-child(1){animation-delay:.00s}.eq i:nth-child(2){animation-delay:.08s}
.eq i:nth-child(3){animation-delay:.16s}.eq i:nth-child(4){animation-delay:.24s}
.eq i:nth-child(5){animation-delay:.32s}.eq i:nth-child(6){animation-delay:.40s}
.eq i:nth-child(7){animation-delay:.48s}.eq i:nth-child(8){animation-delay:.56s}
.eq i:nth-child(9){animation-delay:.64s}.eq i:nth-child(10){animation-delay:.72s}
.eq i:nth-child(11){animation-delay:.80s}.eq i:nth-child(12){animation-delay:.88s}
@keyframes bar{
  0%,100%{height:12px;opacity:.6}
  50%{height:40px;opacity:1}
}

/* ---------------- Sections ---------------- */
.section{padding:clamp(3.2rem,7vw,5.5rem) 0}
.section-alt{
  background:linear-gradient(180deg,transparent,var(--bg-alt) 12%,var(--bg-alt) 88%,transparent);
}
.section-head{margin-bottom:2.4rem;max-width:44rem}
.section-head h2{
  display:flex;align-items:baseline;gap:.7rem;flex-wrap:wrap;
  font-size:clamp(1.6rem,3.6vw,2.1rem);
}
.section-head h2::before{
  content:"";width:8px;height:26px;border-radius:99px;
  background:linear-gradient(180deg,var(--coral),var(--sky));
}
.section-head .en{
  font-size:.72rem;letter-spacing:.3em;text-transform:uppercase;
  color:var(--ink-soft);font-weight:500;
}
.section-sub{margin:.5rem 0 0;color:var(--ink-soft);font-size:.95rem}

.source-note{
  margin:1.8rem 0 0;padding-left:.9rem;
  border-left:3px solid var(--coral-soft);
  font-size:.8rem;color:var(--ink-soft);
}

/* reveal animation */
.reveal{opacity:0;transform:translateY(22px)}
.reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .6s ease,transform .6s cubic-bezier(.22,.8,.28,1);
}

/* ---------------- Profile ---------------- */
.profile-grid{
  display:grid;gap:1rem;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
}
.stat-card{
  padding:1.2rem 1.3rem;border-radius:var(--radius-sm);
  background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,border-color .25s ease;
}
.stat-card:hover{transform:translateY(-4px);border-color:var(--coral)}
.stat-label{
  display:inline-block;font-size:.7rem;letter-spacing:.16em;
  color:var(--coral-deep);text-transform:uppercase;margin-bottom:.4rem;
}
.stat-card strong{display:block;font-size:1.2rem;letter-spacing:.02em}
.stat-card em{display:block;font-style:normal;font-size:.78rem;color:var(--ink-soft);margin-top:.25rem}
.swatch{
  display:inline-block;width:14px;height:14px;border-radius:50%;
  background:#ff8899;margin-right:.4rem;vertical-align:-2px;
  box-shadow:0 0 0 3px rgba(255,136,153,.28);
}

/* ---------------- About ---------------- */
.about-grid{display:grid;gap:1.6rem;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.quote-card{
  margin:0;padding:1.8rem;border-radius:var(--radius);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-sm);
  position:relative;overflow:hidden;
}
.quote-card::before{
  content:"“";position:absolute;right:.6rem;top:-1.4rem;
  font-size:7rem;color:var(--coral-soft);line-height:1;
}
.quote-jp{position:relative;margin:0 0 1rem;font-size:.98rem;line-height:2}
.quote-card footer{font-size:.78rem;color:var(--ink-soft)}
.about-text p{margin:0 0 1rem}
.about-text .trans{
  padding:.9rem 1.1rem;border-radius:var(--radius-sm);
  background:var(--card);border:1px dashed var(--coral-soft);
  font-size:.92rem;color:var(--ink-soft);
}
.about-text b{color:var(--coral-deep)}

/* ---------------- Traits ---------------- */
.trait-grid{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.trait-card{
  position:relative;padding:1.5rem 1.4rem 1.2rem;
  border-radius:var(--radius);background:var(--card);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.trait-card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(140deg,rgba(255,111,145,.10),transparent 55%);
}
.trait-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.trait-icon{font-size:1.6rem;display:block;margin-bottom:.6rem}
.trait-card h3{font-size:1.05rem;margin-bottom:.45rem}
.trait-card p{margin:0 0 .9rem;font-size:.88rem;color:var(--ink-soft)}
.trait-tag{
  display:inline-block;padding:.15rem .65rem;border-radius:999px;
  font-size:.68rem;letter-spacing:.08em;
  background:var(--coral-soft);color:var(--coral-deep);
}

/* ---------------- Timeline ---------------- */
.timeline{list-style:none;margin:0;padding:0 0 0 1.6rem;position:relative}
.timeline::before{
  content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--coral),var(--sky));
  border-radius:99px;
}
.timeline li{position:relative;padding:0 0 1.8rem .4rem}
.timeline li::before{
  content:"";position:absolute;left:-1.6rem;top:.55rem;
  width:12px;height:12px;border-radius:50%;
  background:var(--card);border:3px solid var(--coral);
}
.tl-date{
  display:inline-block;margin-bottom:.3rem;
  font-size:.72rem;letter-spacing:.14em;color:var(--coral-deep);
}
.tl-body h3{font-size:1.02rem;margin-bottom:.3rem}
.tl-body p{margin:0;font-size:.9rem;color:var(--ink-soft);max-width:52rem}

/* ---------------- Music ---------------- */
.filters{display:flex;gap:.5rem;margin-bottom:1.4rem;flex-wrap:wrap}
.chip{
  padding:.5rem 1.1rem;border-radius:999px;cursor:pointer;
  border:1px solid var(--line);background:var(--card);color:var(--ink-soft);
  font-family:inherit;font-size:.85rem;
  transition:all .2s ease;
}
.chip:hover{border-color:var(--coral);color:var(--ink)}
.chip.is-active{background:var(--coral);border-color:var(--coral);color:#fff}

.music-grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(215px,1fr))}
.music-card{
  padding:1.15rem 1.2rem;border-radius:var(--radius-sm);
  background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,border-color .25s ease;
}
.music-card:hover{transform:translateY(-4px);border-color:var(--coral)}
.music-card.is-hidden{display:none}
.music-no{
  display:block;font-size:.68rem;letter-spacing:.16em;
  color:var(--ink-soft);text-transform:uppercase;margin-bottom:.4rem;
}
.music-card h3{font-size:1.15rem;letter-spacing:.06em;margin-bottom:.2rem}
.reading{margin:0;font-size:.78rem;color:var(--coral-deep)}
.music-card time{
  display:block;margin-top:.7rem;padding-top:.6rem;
  border-top:1px dashed var(--line);
  font-size:.75rem;color:var(--ink-soft);letter-spacing:.06em;
}

.fun-fact{
  margin-top:2rem;padding:1.5rem 1.6rem;border-radius:var(--radius);
  background:linear-gradient(130deg,var(--coral-soft),var(--sky-soft));
  border:1px solid var(--line);
}
.fun-fact h3{font-size:1rem;margin-bottom:.5rem}
.fun-fact p{margin:0;font-size:.9rem;color:var(--ink)}
.fun-fact b{color:var(--coral-deep)}

/* ---------------- Cards ---------------- */
.filter-count{
  margin-left:auto;align-self:center;
  font-size:.78rem;color:var(--ink-soft);
}

.card-grid{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fill,minmax(290px,1fr))}

.card{
  display:block;padding:0;border:1px solid var(--line);cursor:pointer;
  font-family:inherit;color:inherit;text-align:left;
  border-radius:var(--radius);overflow:hidden;background:var(--card);
  box-shadow:var(--shadow-sm);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--coral)}
.card.is-hidden{display:none}

.card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.card:hover .card-media img{transform:scale(1.06)}

.card-rarity,
.card-attr,
.card-variant{
  position:absolute;z-index:1;
  padding:.22rem .6rem;border-radius:999px;
  font-size:.68rem;letter-spacing:.06em;
  backdrop-filter:blur(6px);
}
.card-rarity{top:.7rem;left:.7rem;background:rgba(24,14,26,.55);color:#ffd76b;font-weight:700}
.card-attr{top:.7rem;right:.7rem;color:#fff;font-weight:600}
.card-variant{bottom:.7rem;left:.7rem;background:rgba(24,14,26,.5);color:#fff}

.card-body{padding:.95rem 1.05rem 1.1rem}
.card-body h3{font-size:.98rem;margin-bottom:.3rem;letter-spacing:.02em}
.card-sub{
  display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;
  font-size:.72rem;color:var(--ink-soft);
}
.card-ja{color:var(--coral-deep)}

.notice{
  margin-top:1.6rem;padding:1rem 1.2rem;border-radius:var(--radius-sm);
  background:var(--card);border:1px solid var(--line);
  font-size:.83rem;color:var(--ink-soft);
}
.notice strong{color:var(--coral-deep)}

/* ---------------- Live2D ---------------- */
.l2d-layout{
  display:grid;gap:1.6rem;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  align-items:start;
}

.l2d-stage{
  position:relative;
  width:100%;
  aspect-ratio:1/1;
  max-height:560px;
  margin-inline:auto;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:
    radial-gradient(circle at 50% 78%,rgba(255,255,255,.75),transparent 55%),
    linear-gradient(165deg,#ffeef4 0%,#eaf7fb 55%,#e2f1ff 100%);
  box-shadow:var(--shadow-lg);
}
[data-theme="night"] .l2d-stage{
  background:
    radial-gradient(circle at 50% 78%,rgba(140,120,200,.35),transparent 55%),
    linear-gradient(165deg,#241a33 0%,#1c2036 55%,#16192b 100%);
}
.l2d-stage canvas{display:block;width:100%;height:100%}

.l2d-status{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  margin:0;padding:.6rem 1.1rem;border-radius:999px;
  max-width:80%;text-align:center;
  background:color-mix(in srgb,var(--card) 86%,transparent);
  border:1px solid var(--line);
  font-size:.82rem;color:var(--ink-soft);
  backdrop-filter:blur(6px);
}

.l2d-fallback{
  position:absolute;inset:0;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.8rem;
  padding:1.4rem;text-align:center;
  background:var(--bg-alt);
}
/* 作者样式会盖过浏览器默认的 [hidden]{display:none}，必须显式处理 */
.l2d-fallback[hidden]{display:none}
.l2d-fallback img{width:auto;max-height:62%}
.l2d-fallback p{margin:0;max-width:28rem;font-size:.82rem;color:var(--ink-soft)}

.l2d-controls{
  padding:1.3rem 1.4rem;border-radius:var(--radius);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.l2d-group{margin-bottom:1.15rem}
.l2d-group:last-of-type{margin-bottom:.6rem}
.l2d-label{
  display:block;margin-bottom:.5rem;
  font-size:.72rem;letter-spacing:.16em;color:var(--coral-deep);text-transform:uppercase;
}
.l2d-chips{display:flex;flex-wrap:wrap;gap:.4rem}
.l2d-chips .chip{padding:.35rem .8rem;font-size:.78rem}
.l2d-hint{margin:.9rem 0 0;font-size:.74rem;color:var(--ink-soft)}

@media (max-width:960px){
  .l2d-layout{grid-template-columns:1fr}
}

/* ---------------- Letters ---------------- */
.letters-grid{display:grid;gap:1.6rem;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}
.letter-form{
  padding:1.6rem;border-radius:var(--radius);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.letter-form label{display:block;margin-bottom:1rem}
.letter-form label span{
  display:block;font-size:.78rem;letter-spacing:.1em;
  color:var(--ink-soft);margin-bottom:.4rem;
}
.letter-form input,.letter-form textarea{
  width:100%;padding:.7rem .9rem;font-family:inherit;font-size:.92rem;
  color:var(--ink);background:var(--bg);
  border:1px solid var(--line);border-radius:12px;resize:vertical;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.letter-form input:focus,.letter-form textarea:focus{
  outline:none;border-color:var(--coral);
  box-shadow:0 0 0 4px rgba(255,111,145,.16);
}
.letter-form-foot{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.letter-form-foot small{font-size:.72rem;color:var(--ink-soft)}

.letter-wall{
  padding:1.4rem;border-radius:var(--radius);
  background:var(--bg-alt);border:1px solid var(--line);
}
.letter-wall-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:.9rem}
.letter-wall-head h3{font-size:1rem}
.link-btn{
  border:0;background:none;cursor:pointer;font-family:inherit;
  font-size:.78rem;color:var(--ink-soft);text-decoration:underline;
}
.link-btn:hover{color:var(--coral-deep)}
.letter-list{list-style:none;margin:0;padding:0;display:grid;gap:.7rem}
.letter-list li{
  padding:.85rem 1rem;border-radius:14px;
  background:var(--card);border:1px solid var(--line);
  animation:pop .35s ease;
}
@keyframes pop{
  from{opacity:0;transform:translateY(8px) scale(.99)}
  to{opacity:1;transform:none}
}
.letter-list .who{
  display:flex;align-items:center;gap:.5rem;margin-bottom:.25rem;
  font-size:.78rem;color:var(--coral-deep);font-weight:600;
}
.letter-list .who time{margin-left:auto;color:var(--ink-soft);font-weight:400;font-size:.7rem}
.letter-list p{margin:0;font-size:.88rem}
.letter-list .empty{color:var(--ink-soft);font-size:.85rem;text-align:center}

/* ---------------- Links ---------------- */
.link-grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.link-card{
  display:flex;flex-direction:column;gap:.25rem;
  padding:1.3rem 1.4rem;border-radius:var(--radius-sm);
  background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,border-color .25s ease;
}
.link-card:hover{transform:translateY(-4px);border-color:var(--sky)}
.link-card strong{font-size:.98rem}
.link-card span{font-size:.76rem;color:var(--ink-soft);word-break:break-all}

/* ---------------- Footer ---------------- */
.site-footer{
  margin-top:2rem;padding:2.4rem 0;
  border-top:1px solid var(--line);
  background:var(--bg-alt);
}
.footer-inner{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:flex-end}
.footer-inner strong{font-size:.95rem;letter-spacing:.06em}
.footer-inner p{margin:.35rem 0 0;font-size:.78rem;color:var(--ink-soft);max-width:38rem}
.copyright span{color:var(--coral-deep)}

/* ---------------- Lightbox ---------------- */
.lightbox{
  position:fixed;inset:0;z-index:300;
  display:grid;place-items:center;padding:1.5rem;
  background:rgba(20,12,22,.72);backdrop-filter:blur(6px);
  animation:fade .25s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lightbox[hidden]{display:none}
.lightbox-content{
  width:min(100%,760px);max-height:92vh;overflow:auto;
  padding:1.2rem;border-radius:var(--radius);
  background:var(--card);box-shadow:var(--shadow-lg);
}
.lightbox-img{
  width:100%;height:auto;display:block;
  border-radius:var(--radius-sm);background:var(--bg-alt);
}
.lightbox-body{padding-top:.9rem}
.lightbox-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.7rem}
.lightbox-head strong{font-size:1.02rem}
.lightbox-meta{font-size:.75rem;color:var(--ink-soft)}
.lightbox-variants{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.8rem}
.lightbox-note{margin:.9rem 0 0;font-size:.72rem;color:var(--ink-soft)}
.lightbox-close{
  position:absolute;top:1.2rem;right:1.4rem;
  width:42px;height:42px;border-radius:50%;cursor:pointer;
  border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.14);
  color:#fff;font-size:1.4rem;line-height:1;
}

/* ---------------- Responsive ---------------- */
@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr}
  .hero-art{order:-1}
  .about-grid,.letters-grid{grid-template-columns:1fr}
}

@media (max-width:760px){
  .wrap{width:min(100% - 1.8rem,var(--max))}
  .nav-toggle{display:grid}
  .nav{
    position:absolute;left:1rem;right:1rem;top:calc(100% + .5rem);
    flex-direction:column;gap:.15rem;
    padding:.6rem;border-radius:var(--radius-sm);
    background:var(--card);border:1px solid var(--line);
    box-shadow:var(--shadow-lg);
    display:none;
  }
  .nav.is-open{display:flex}
  .nav a{padding:.6rem .8rem}
  .quick-stats{grid-template-columns:repeat(2,1fr)}
  .header-inner{position:relative}
  .timeline{padding-left:1.2rem}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}