/* RIOKO · adult visual archive  —  v2 */
:root{
  --bg:#0a0510; --bg-2:#120718; --card:#170d1c; --line:#43203a; --line-2:#5e2b4d;
  --pink:#ff4d8d; --pink-2:#ff7bad; --gold:#f3c169; --text:#f8ecf2; --dim:#b291a5;
  --serif:"Playfair Display","Songti SC","Noto Serif SC",Georgia,serif;
  --sans:"Inter Tight","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --r:16px; --ease:cubic-bezier(.22,.68,.24,1);
  --shadow:0 24px 70px -20px #000;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;min-height:100vh;color:var(--text);
  font-family:var(--sans);line-height:1.65;
  font-feature-settings:"kern" 1,"liga" 1;
  background:
    radial-gradient(1100px 620px at 12% -8%,#41112c 0%,transparent 58%),
    radial-gradient(880px 560px at 96% 4%,#2b1033 0%,transparent 52%),
    radial-gradient(700px 500px at 50% 120%,#2a0f26 0%,transparent 60%),
    linear-gradient(#0a0510,#0f0714 55%,#0a0510);
  background-attachment:fixed;
}
a{color:var(--gold);text-decoration:none}
img{max-width:100%}
:focus-visible{outline:2px solid var(--pink);outline-offset:3px;border-radius:6px}

.wrap{max-width:1240px;margin:0 auto;padding:38px 24px 80px}

/* ── 顶栏 ───────────────────────────────── */
.top{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:22px;flex-wrap:wrap;position:relative;
  padding-bottom:20px;margin-bottom:38px;border-bottom:1px solid var(--line);
}
.top::after{
  content:"";position:absolute;left:0;bottom:-1px;width:132px;height:1px;
  background:linear-gradient(90deg,var(--pink),transparent);
}
.brand{
  margin:0;font-family:var(--serif);font-weight:600;
  font-size:clamp(24px,4.4vw,34px);letter-spacing:.32em;color:var(--gold);
  text-shadow:0 0 42px rgba(243,193,105,.22);
}
.brand small{
  display:block;margin-top:7px;font-family:var(--sans);font-weight:500;
  font-size:10.5px;letter-spacing:.3em;color:var(--dim);text-transform:uppercase;
}
.headmeta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:var(--dim);font-size:13px}
.badge{
  display:inline-block;padding:3px 11px;border:1px solid var(--pink);border-radius:999px;
  color:var(--pink);font-size:10.5px;letter-spacing:.22em;white-space:nowrap;
}
.back{font-size:13px;letter-spacing:.04em;transition:color .25s}
.back:hover{color:var(--pink)}

/* ── 首页图集墙 ─────────────────────────── */
.sets{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));gap:20px}
.setcard{
  position:relative;display:block;aspect-ratio:3/4;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r);background:var(--card);
  box-shadow:0 10px 34px -18px #000;
  transition:border-color .4s var(--ease),transform .5s var(--ease),box-shadow .5s var(--ease);
}
.setcard img{
  width:100%;height:100%;object-fit:cover;display:block;
  filter:saturate(.9) brightness(.94);
  transition:transform .85s var(--ease),filter .5s var(--ease);
}
.setcard::before{                     /* 载入前的丝绒底 */
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(135deg,#241127,#150b1c 60%,#2a1330);
}
.setcard img{position:relative;z-index:1}
.setcard:hover,.setcard:focus-visible{
  border-color:var(--line-2);transform:translateY(-5px);box-shadow:var(--shadow);
}
.setcard:hover img,.setcard:focus-visible img{transform:scale(1.06);filter:saturate(1.06) brightness(1)}
.setcard .ov{
  position:absolute;inset:auto 0 0 0;z-index:2;padding:34px 17px 16px;
  background:linear-gradient(transparent,rgba(9,4,12,.55) 32%,rgba(9,4,12,.95));
}
.setcard .ov h3{
  margin:0 0 5px;font-family:var(--serif);font-size:17px;font-weight:600;
  line-height:1.35;color:#fff;letter-spacing:.01em;
}
.setcard .ov .more{
  font-size:11.5px;letter-spacing:.18em;color:var(--pink);
  display:inline-flex;align-items:center;gap:6px;
}
.setcard .ov .more::after{content:"→";transition:transform .35s var(--ease)}
.setcard:hover .ov .more::after{transform:translateX(4px)}
.setcard .n{
  position:absolute;top:12px;right:12px;z-index:2;padding:3px 10px;
  border:1px solid var(--line-2);border-radius:999px;background:rgba(9,4,12,.66);
  backdrop-filter:blur(6px);color:var(--gold);font-size:11px;font-variant-numeric:tabular-nums;
}

/* ── 图集内页 ───────────────────────────── */
.crumb{display:flex;align-items:center;gap:13px;flex-wrap:wrap;margin-bottom:26px}
.crumb h1{
  margin:0;font-family:var(--serif);font-size:clamp(20px,3.2vw,27px);
  font-weight:600;letter-spacing:.03em;color:var(--gold);
}
.crumb .cnt{color:var(--dim);font-size:13px;font-variant-numeric:tabular-nums}

.grid{columns:4 210px;column-gap:13px}
.grid figure{
  position:relative;margin:0 0 13px;break-inside:avoid;
  border:1px solid #361830;border-radius:11px;overflow:hidden;
  background:linear-gradient(135deg,#211026,#150b1c);
  cursor:zoom-in;
  transition:border-color .38s var(--ease),transform .38s var(--ease);
}
.grid figure:hover,.grid figure:focus-visible{border-color:var(--line-2);transform:translateY(-2px)}
.grid figure:focus-visible{outline:2px solid var(--pink);outline-offset:2px}
.grid img{
  width:100%;height:auto;display:block;
  transition:opacity .5s var(--ease),transform .6s var(--ease);
}
.grid img.pending{opacity:0}
.grid figure:hover img{transform:scale(1.035)}
.grid figure::after{                  /* 放大镜提示 */
  content:"＋";position:absolute;top:9px;right:11px;z-index:2;
  color:#fff;font-size:15px;line-height:1;opacity:0;
  text-shadow:0 1px 6px #000;transition:opacity .28s var(--ease);
}
@media(hover:hover){.grid figure:hover::after{opacity:.9}}

/* 图片加载失败占位 */
.grid figure.err::after{content:"⊘";opacity:.5;top:50%;right:50%;transform:translate(50%,-50%);font-size:22px}

/* ── 灯箱 ───────────────────────────────── */
#lb{
  position:fixed;inset:0;z-index:120;display:none;
  flex-direction:column;align-items:center;justify-content:center;
  padding:16px;background:rgba(6,2,9,.965);
  backdrop-filter:blur(14px);
}
#lb.on{display:flex;animation:lbIn .28s var(--ease)}
@keyframes lbIn{from{opacity:0}to{opacity:1}}
#lb .stage{
  position:relative;display:flex;align-items:center;justify-content:center;
  max-width:100%;max-height:100%;
}
#lb img{
  max-width:min(96vw,1500px);max-height:84vh;width:auto;height:auto;
  object-fit:contain;border-radius:9px;box-shadow:0 34px 100px -12px #000;
  opacity:0;transition:opacity .25s var(--ease);
}
#lb img.ready{opacity:1}
#lb .spinner{
  position:absolute;width:30px;height:30px;border-radius:50%;
  border:2px solid rgba(255,77,141,.25);border-top-color:var(--pink);
  animation:spin .8s linear infinite;opacity:0;pointer-events:none;
  transition:opacity .2s;
}
#lb.loading .spinner{opacity:1}
@keyframes spin{to{transform:rotate(360deg)}}
#lb .bar{
  display:flex;align-items:center;gap:14px;margin-top:16px;
  color:var(--dim);font-size:13px;
}
#lb .cnt{font-variant-numeric:tabular-nums;letter-spacing:.1em;min-width:70px;text-align:center}
#lb button{
  display:grid;place-items:center;width:44px;height:44px;
  border:1px solid var(--line);border-radius:50%;background:#231226;
  color:var(--text);font-size:18px;line-height:1;cursor:pointer;
  transition:border-color .25s,color .25s,background .25s,transform .25s;
}
#lb button:hover{border-color:var(--pink);color:var(--pink);background:#2d1630}
#lb button:active{transform:scale(.92)}
#lb .hint{
  position:absolute;top:18px;right:20px;color:var(--dim);
  font-size:11.5px;letter-spacing:.06em;opacity:.72;
}
/* 左右大热区（桌面） */
#lb .hot{position:absolute;top:0;bottom:0;width:26%;cursor:pointer;z-index:1}
#lb .hot.l{left:0} #lb .hot.r{right:0}

/* ── 年龄门 ─────────────────────────────── */
#gate{
  position:fixed;inset:0;z-index:300;display:flex;
  align-items:center;justify-content:center;padding:20px;
  background:
    radial-gradient(760px 520px at 50% 0%,#3a1028 0%,transparent 62%),
    linear-gradient(#0a0510,#07030b);
}
#gate.gone{display:none}
#gate .box{
  position:relative;width:100%;max-width:560px;padding:clamp(30px,6vw,46px);
  border:1px solid var(--line);border-radius:20px;
  background:rgba(23,13,28,.92);box-shadow:var(--shadow);text-align:center;
  animation:boxIn .55s var(--ease) both;
}
@keyframes boxIn{from{opacity:0;transform:translateY(16px) scale(.985)}}
#gate h1{
  margin:15px 0 12px;font-family:var(--serif);font-weight:600;
  font-size:clamp(30px,7vw,40px);letter-spacing:.3em;color:var(--gold);
  text-indent:.3em;
}
#gate p{margin:0;color:#e9d2dd;font-size:14.5px;line-height:1.85}
#gate .note{margin-top:16px;color:var(--dim);font-size:12px;line-height:1.7}
.btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.btn{
  padding:13px 26px;border:0;border-radius:999px;cursor:pointer;
  font-family:var(--sans);font-size:14px;font-weight:700;letter-spacing:.03em;
  transition:transform .25s var(--ease),box-shadow .3s,filter .3s;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.go{background:linear-gradient(135deg,var(--pink),#e8397a);color:#fff;
  box-shadow:0 12px 34px -12px rgba(255,77,141,.62)}
.go:hover{box-shadow:0 16px 42px -12px rgba(255,77,141,.8)}
.no{background:#2a1d2e;color:#b9a4b3}

/* ── 页脚 ───────────────────────────────── */
.foot{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:64px;padding-top:22px;border-top:1px solid var(--line);
  color:var(--dim);font-size:12px;
}
.foot span:last-child{color:#8d6f80}

/* 返回顶部 */
#up{
  position:fixed;right:22px;bottom:22px;z-index:90;
  display:grid;place-items:center;width:42px;height:42px;
  border:1px solid var(--line);border-radius:50%;background:rgba(23,13,28,.9);
  backdrop-filter:blur(8px);color:var(--gold);cursor:pointer;
  opacity:0;pointer-events:none;transition:opacity .3s,transform .3s,border-color .3s;
}
#up.on{opacity:1;pointer-events:auto}
#up:hover{border-color:var(--pink);color:var(--pink);transform:translateY(-3px)}

/* ── 响应式 ─────────────────────────────── */
@media(max-width:900px){ .grid{columns:3 170px} }
@media(max-width:640px){
  .wrap{padding:24px 15px 60px}
  .top{gap:14px;margin-bottom:26px}
  .sets{grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:12px}
  .setcard .ov{padding:26px 12px 12px}
  .setcard .ov h3{font-size:14px}
  .setcard .ov .more{font-size:10px;letter-spacing:.12em}
  .setcard .n{top:9px;right:9px;font-size:10px;padding:2px 8px}
  .grid{columns:2 140px;column-gap:9px}
  .grid figure{margin-bottom:9px}
  .grid figure::after{display:none}
  #lb .hot{display:none}
  #lb img{max-height:78vh}
  #lb .hint{display:none}
  #up{right:14px;bottom:14px}
  .foot{font-size:11px}
}

/* ── 无障碍 / 省电 ──────────────────────── */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
}
@media print{
  #gate,#lb,#up,.top::after{display:none!important}
  body{background:#fff;color:#000}
}