/* =========================================================
   Article reading screen — 記事 index and long-form detail
   Mockup: assets/mockups/article-reading-screen-concept-v1.png
   ========================================================= */

/* ---------- back / action bar above the headline ---------- */
.artbar{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  margin:clamp(16px,1.8vw,24px) 0 clamp(14px,1.6vw,20px);
}
.artbar__back{
  display:inline-flex;align-items:center;gap:12px;
  font-size:13.5px;letter-spacing:.12em;color:var(--gold);
  transition:gap .4s var(--e-out),color .3s var(--e);
}
.artbar__back:hover{gap:18px;color:var(--gold-bright)}
.artbar__back svg{flex:none}

/* ---------- bookmark / share / read-later ---------- */
.artacts{display:flex;align-items:center;gap:12px;margin-left:auto}
.artacts--wide{margin-left:0;width:100%}
.iconbtn{
  display:grid;place-items:center;flex:none;
  width:38px;height:38px;border-radius:var(--r);
  border:1px solid var(--line-2);color:var(--text-2);
  transition:color .3s var(--e),border-color .3s var(--e),background .3s var(--e),transform .3s var(--e-out);
}
.iconbtn:hover{color:var(--text);border-color:var(--line-gold);background:rgba(21,25,35,.7);transform:translateY(-1px)}
.iconbtn[aria-pressed="true"]{color:var(--gold-bright);border-color:rgba(201,169,106,.6);background:rgba(201,169,106,.10)}
.btn--later{
  height:38px;padding:0 20px;border-radius:var(--r);
  border:1px solid var(--line-gold);background:transparent;color:var(--gold);
  font-size:13px;letter-spacing:.1em;
}
.btn--later:hover{border-color:var(--gold);color:var(--gold-bright);background:rgba(201,169,106,.08);transform:translateY(-1px)}
.btn--later[aria-pressed="true"]{
  background:rgba(201,169,106,.14);border-color:var(--gold);color:var(--gold-bright);
}
.artacts--wide .iconbtn{width:68px;height:50px}
.artacts--wide .btn--later{flex:1;height:50px;justify-content:center;font-size:14px}

/* toast used by 共有 / 保存 feedback */
.atoast{
  position:fixed;left:50%;bottom:34px;z-index:88;transform:translate(-50%,14px);
  padding:12px 22px;border-radius:var(--r);
  background:rgba(13,16,23,.94);border:1px solid var(--line-gold);
  color:var(--text);font-size:12.5px;letter-spacing:.1em;
  opacity:0;pointer-events:none;transition:opacity .35s var(--e),transform .45s var(--e-out);
  backdrop-filter:blur(10px);
}
.atoast.is-on{opacity:1;transform:translate(-50%,0)}

/* =========================================================
   Detail layout
   ========================================================= */
.artgrid{display:grid;grid-template-columns:minmax(0,1fr) 388px;gap:clamp(28px,3.4vw,46px);align-items:start}

/* ---------- headline block ---------- */
.arthead{max-width:none}
.arthead .eyebrow{display:block;margin-bottom:12px}
.arttitle{
  font-family:var(--f-min);font-weight:400;
  font-size:clamp(29px,3.5vw,50px);line-height:1.28;letter-spacing:.02em;
  margin:0;
}
.artdeck{
  margin:12px 0 0;max-width:34em;
  font-size:clamp(15px,1.25vw,18px);line-height:1.85;
  letter-spacing:.07em;color:var(--text-2);
}
.artmeta{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;
  margin-top:18px;font-size:13px;letter-spacing:.1em;color:var(--text-3);
}
.artmeta__sep{color:var(--text-4)}
.artmeta__lock{display:inline-flex;align-items:center;gap:8px;color:var(--gold)}
.artmeta__lock svg{flex:none}
.artby{display:flex;align-items:center;gap:14px;margin-top:20px}
.artby__mark{
  width:38px;height:38px;border-radius:50%;flex:none;position:relative;
  border:1px solid rgba(201,169,106,.55);
  background:
    repeating-conic-gradient(from 0deg,rgba(201,169,106,.55) 0deg 3deg,transparent 3deg 15deg),
    radial-gradient(circle at 50% 50%,rgba(201,169,106,.30) 0%,rgba(201,169,106,0) 62%);
}
.artby__mark::before{
  content:"";position:absolute;inset:3px;border-radius:50%;
  border:1px solid rgba(201,169,106,.45);
}
.artby__mark::after{
  content:"";position:absolute;inset:10px;border-radius:50%;
  border:1px solid rgba(235,215,170,.85);
  background:radial-gradient(circle,rgba(235,215,170,.35),transparent 70%);
}
.artby__name{font-size:16px;letter-spacing:.09em;color:var(--text)}
.artby__role{font-size:11.5px;letter-spacing:.16em;color:var(--text-3)}

/* ---------- hero artwork ---------- */
.arthero{
  margin:clamp(22px,2.4vw,32px) 0 0;position:relative;
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
}
.arthero .art{position:relative;aspect-ratio:33/8}
.arthero figcaption{
  padding:12px 2px 0;font-size:11.5px;line-height:1.8;letter-spacing:.08em;color:var(--text-4);
}

/* =========================================================
   Body: reading gutter + long-form flow
   ========================================================= */
.artbody{position:relative;padding-left:56px;margin-top:clamp(26px,2.8vw,38px)}

/* 読了進捗 — hairline track with a gold viewport thumb and a % label */
/* --aprog-p is the unitless 0-1 read ratio; the marker rides the track and
   therefore always stays inside the viewport as the reader scrolls. */
.aprog{position:absolute;left:6px;top:6px;bottom:6px;width:2px;--aprog-p:0;--aprog-mark:34px}
/* the track is punched out behind the label so the % never sits on the line */
.aprog__track{
  position:absolute;left:0;top:0;bottom:0;width:1px;background:rgba(237,239,243,.16);
  --gap-a:calc((100% - var(--aprog-mark)) * var(--aprog-p) + var(--aprog-mark) + 3px);
  --gap-b:calc((100% - var(--aprog-mark)) * var(--aprog-p) + var(--aprog-mark) + 29px);
  -webkit-mask-image:linear-gradient(180deg,#000 0,#000 var(--gap-a),transparent var(--gap-a),transparent var(--gap-b),#000 var(--gap-b));
  mask-image:linear-gradient(180deg,#000 0,#000 var(--gap-a),transparent var(--gap-a),transparent var(--gap-b),#000 var(--gap-b));
}
.aprog__thumb{
  position:absolute;left:0;width:1px;height:var(--aprog-mark);
  top:calc((100% - var(--aprog-mark)) * var(--aprog-p));
  background:linear-gradient(180deg,var(--gold-bright),var(--gold));
  box-shadow:0 0 8px rgba(201,169,106,.55);
  transition:top .14s linear;
}
.aprog__label{
  position:absolute;left:50%;
  top:calc((100% - var(--aprog-mark)) * var(--aprog-p) + var(--aprog-mark));
  transform:translate(-50%,4px);
  padding:2px 0;
  font-size:12.5px;letter-spacing:.08em;color:var(--gold);
  font-variant-numeric:tabular-nums;font-feature-settings:"tnum";
  transition:top .14s linear;
}

.artflow{max-width:56em}
.artflow > * + *,
.artflow .artsec > * + *{margin-top:22px}
.artflow p{margin:0;font-size:15px;line-height:2.15;letter-spacing:.05em;color:var(--text-2)}

.artsec{scroll-margin-top:34px}
.artsec + .artsec{margin-top:clamp(42px,4.4vw,64px)}
.artflow .artsec > .artsec__h + *{margin-top:0}
.artsec__h{
  font-family:var(--f-min);font-weight:400;
  font-size:clamp(21px,2.2vw,28px);line-height:1.6;letter-spacing:.08em;
  margin:0 0 20px;color:var(--text);
}
.artsec__no{color:var(--gold);margin-right:.5em}

.artflow ul{margin:0;padding:0;list-style:none}
.artflow ul li{position:relative;padding-left:24px;font-size:14.5px;line-height:2.05;color:var(--text-2)}
.artflow ul li + li{margin-top:10px}
.artflow ul li::before{
  content:"";position:absolute;left:2px;top:14px;width:6px;height:6px;border-radius:50%;
  background:radial-gradient(circle,var(--gold-bright),rgba(201,169,106,.3));
}

.artquote{
  margin:0;padding:4px 0 4px 24px;border-left:2px solid var(--line-gold);
}
.artquote p{
  font-family:var(--f-min);font-size:clamp(16px,1.4vw,19px);line-height:1.95;
  letter-spacing:.07em;color:var(--text);
}
.artquote cite{
  display:block;margin-top:12px;font-style:normal;
  font-size:11.5px;letter-spacing:.16em;color:var(--text-3);
}

/* dense data block — 投資情報ポータルらしい密度 */
.artdata{
  border:1px solid var(--line);border-radius:var(--r);
  background:rgba(21,25,35,.5);overflow:hidden;
}
.artdata__cap{
  padding:14px 20px;border-bottom:1px solid var(--line);
  font-size:11.5px;letter-spacing:.2em;color:var(--gold);
}
.artdata__row{
  display:grid;grid-template-columns:minmax(0,.44fr) minmax(0,1fr);gap:8px 22px;
  padding:15px 20px;
}
.artdata__row + .artdata__row{border-top:1px solid var(--line)}
.artdata__row dt{font-size:13px;letter-spacing:.09em;color:var(--text);line-height:1.9}
.artdata__row dd{margin:0;font-size:13px;line-height:1.95;color:var(--text-3)}

.artnote{
  display:flex;gap:14px;padding:16px 18px;border-radius:var(--r);
  border:1px solid var(--line);background:rgba(21,25,35,.55);
  font-size:13px;line-height:1.95;color:var(--text-3);
}
.artnote__ico{flex:none;color:var(--gold);margin-top:3px}

/* 動画の続き（会員限定記事）の部品：小見出し・図・動画・表・番号つき・リンク */
.artsec__h3{
  font-family:var(--f-min);font-weight:400;font-size:clamp(17px,1.6vw,20px);
  line-height:1.7;letter-spacing:.07em;margin:8px 0 0;color:var(--text);
}
.artflow ol{margin:0;padding-left:1.6em;color:var(--text-2)}
.artflow ol li{font-size:14.5px;line-height:2.05;padding-left:4px}
.artflow ol li + li{margin-top:10px}
.artflow ol li::marker{color:var(--gold)}
.artflow a{color:var(--gold-bright);text-decoration:underline;text-underline-offset:3px;word-break:break-all}
.artflow strong{color:var(--text);font-weight:600}
.artfig{margin:0}
.artfig img{
  display:block;width:100%;height:auto;border-radius:var(--r);
  border:1px solid var(--line);background:rgba(21,25,35,.5);
}
.artfig figcaption{margin-top:10px;font-size:12.5px;line-height:1.85;letter-spacing:.04em;color:var(--text-3)}
.artvideo{
  position:relative;aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;
  border:1px solid var(--line-gold);background:radial-gradient(120% 120% at 30% 20%,rgba(201,169,106,.16),rgba(12,15,22,.95));
}
.artvideo iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.artvideo__play{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  width:100%;border:0;background:transparent;color:var(--text);cursor:pointer;padding:20px;text-align:center;
}
.artvideo__icon{
  display:grid;place-items:center;width:64px;height:64px;border-radius:50%;
  border:1px solid var(--line-gold);color:var(--gold-bright);font-size:22px;padding-left:4px;
}
.artvideo__title{font-family:var(--f-min);font-size:clamp(15px,1.5vw,18px);letter-spacing:.07em}
.artvideo__hint{font-size:11.5px;letter-spacing:.16em;color:var(--text-3)}
.artvideo__play:disabled{cursor:progress;opacity:.7}
.arttable{max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:rgba(21,25,35,.5)}
.arttable table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.8}
.arttable th,.arttable td{padding:12px 16px;text-align:left;vertical-align:top;white-space:nowrap}
.arttable th{font-weight:400;letter-spacing:.12em;color:var(--gold);border-bottom:1px solid var(--line)}
.arttable td{color:var(--text-2);border-top:1px solid var(--line)}
.arttable tr:first-child td{border-top:0}
.artlinks{display:flex;flex-wrap:wrap;gap:8px 18px;margin:14px 0 0;font-size:12.5px;letter-spacing:.06em}
.artlinks a{color:var(--gold-bright);text-decoration:underline;text-underline-offset:3px}

.artdivider{
  display:flex;align-items:center;gap:14px;margin-top:clamp(40px,4.4vw,60px);
  font-size:11.5px;letter-spacing:.2em;color:var(--gold);
}
.artdivider::before,.artdivider::after{content:"";flex:1;height:1px;background:var(--line-gold)}
.artlock--inline{margin-top:22px}

.artend{
  margin-top:clamp(40px,4.4vw,60px);padding-top:26px;border-top:1px solid var(--line);
}

/* =========================================================
   Side rail — 要点 / 目次 / 関連ティッカー / actions
   ========================================================= */
.artside{position:sticky;top:26px;display:flex;flex-direction:column;gap:22px}
.spanel{padding:24px 26px 26px}
.spanel__h{
  font-family:var(--f-sans);font-weight:400;
  font-size:16px;letter-spacing:.13em;color:var(--gold);margin:0 0 16px;
}
.spanel__rule{display:block;height:1px;background:var(--line);margin-bottom:18px}

.skeys{margin:0;padding:0;list-style:none}
.skeys li{position:relative;padding-left:26px;font-size:14.5px;line-height:1.85;color:var(--text)}
.skeys li + li{margin-top:18px}
.skeys li::before{
  content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--gold);
}

.toc{margin:0;padding:0;list-style:none}
.toc__link{
  display:flex;align-items:center;gap:12px;width:100%;text-align:left;
  padding:14px 0;font-size:14.5px;line-height:1.7;letter-spacing:.05em;color:var(--text-2);
  transition:color .3s var(--e),padding-left .4s var(--e-out);
}
.toc li + li .toc__link{border-top:1px solid var(--line)}
.toc__no{flex:none;color:inherit;font-variant-numeric:tabular-nums}
.toc__t{flex:1;min-width:0}
.toc__chev{flex:none;margin-left:auto;color:var(--text-3);transition:transform .45s var(--e-out),color .3s var(--e)}
.toc__link:hover{color:var(--text);padding-left:5px}
.toc__link:hover .toc__chev{transform:translateX(4px);color:var(--gold)}
.toc__link[aria-current="true"]{color:var(--gold)}
.toc__link[aria-current="true"] .toc__chev{color:var(--gold)}

.stickers{display:flex;flex-wrap:wrap;gap:12px}
.stickers .chip{height:34px;padding:0 16px;font-size:12.5px;letter-spacing:.14em}
.stickers .chip[data-plain]{cursor:default}
.stickers .chip[data-plain]:hover{transform:none;color:var(--text-2);border-color:var(--line)}

/* =========================================================
   関連する記事 — full width under both columns
   ========================================================= */
.artrel{margin-top:clamp(44px,5vw,72px);padding-top:clamp(26px,3vw,40px);border-top:1px solid var(--line)}
.artrel__h{
  font-family:var(--f-sans);font-weight:400;
  font-size:clamp(17px,1.6vw,20px);letter-spacing:.13em;color:var(--gold);margin:0 0 22px;
}
.artrel__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}

/* =========================================================
   Article cards (index + related)
   ========================================================= */
.ncard__eyebrow{
  position:absolute;left:12px;top:12px;z-index:3;
  padding:3px 9px;border-radius:2px;background:rgba(7,9,13,.8);
  font-size:9.5px;letter-spacing:.22em;color:var(--gold);text-transform:uppercase;
}
.ncard__read{
  position:absolute;right:12px;bottom:12px;z-index:3;
  padding:3px 8px;border-radius:2px;background:rgba(7,9,13,.78);
  font-size:10.5px;letter-spacing:.1em;color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
.ncard .card__media{aspect-ratio:16/9}
.ncard__deck{margin-top:10px;font-size:12.5px;line-height:1.85;color:var(--text-3)}
.ncard__foot{display:flex;align-items:center;gap:12px;padding:14px 20px;border-top:1px solid var(--line)}
.ncard__cat{font-size:12px;letter-spacing:.14em;color:var(--text-2)}
.ncard__saved{color:var(--gold);display:inline-flex}
.ncard__chev{margin-left:auto;color:var(--text-3);transition:transform .45s var(--e-out),color .3s var(--e)}
.ncard:hover .ncard__chev{transform:translateX(5px);color:var(--gold)}
.ncard__bar{position:absolute;left:0;right:0;bottom:0;z-index:4;height:2px;background:rgba(255,255,255,.10)}
.ncard__bar span{display:block;height:2px;background:linear-gradient(90deg,var(--gold-deep),var(--gold-bright))}

.ngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}

/* keep the foot rows aligned when decks wrap to different heights */
.ngrid .ncard,.artrel__grid .ncard{display:flex;flex-direction:column}
.ngrid .ncard .card__body,.artrel__grid .ncard .card__body{flex:1}

/* =========================================================
   Generative hero artwork — power grid over midnight navy
   No binary assets: the banner is layered gradients only.
   Layers, back to front: sky -> dot map -> skyline -> pylons
   -> ground grid -> light trails -> network arcs -> haze.
   ========================================================= */
.art--power{
  background:
    radial-gradient(ellipse 20% 40% at 12% 88%,rgba(255,206,132,.34),transparent 70%),
    radial-gradient(ellipse 34% 46% at 32% 96%,rgba(255,214,148,.38),transparent 66%),
    radial-gradient(ellipse 80% 26% at 52% 74%,rgba(236,196,128,.24),transparent 76%),
    radial-gradient(ellipse 46% 70% at 88% 16%,rgba(120,168,232,.20),transparent 72%),
    linear-gradient(180deg,#070A11 0%,#0A0F1A 34%,#0E1523 66%,#080B13 100%);
}
/* dot-matrix world map across the right third */
.art--power::before{
  content:"";position:absolute;inset:0;z-index:1;
  background-image:radial-gradient(rgba(176,210,252,.95) 1px,transparent 1.1px);
  background-size:6px 6px;
  -webkit-mask-image:radial-gradient(ellipse 28% 46% at 79% 32%,#000 0%,rgba(0,0,0,.85) 46%,transparent 84%);
  mask-image:radial-gradient(ellipse 28% 46% at 79% 32%,#000 0%,rgba(0,0,0,.85) 46%,transparent 84%);
}
/* data-centre skyline: each layer is one tower, lit floor by floor */
.apower__city{
  position:absolute;left:0;right:0;top:0;bottom:38%;z-index:2;
  background-repeat:no-repeat;
  background-image:
    repeating-linear-gradient(180deg,rgba(244,210,150,.50) 0 1px,rgba(7,10,17,.98) 1px 5px),
    repeating-linear-gradient(180deg,rgba(232,196,132,.34) 0 1px,rgba(8,11,19,.98) 1px 6px),
    repeating-linear-gradient(180deg,rgba(244,210,150,.56) 0 1px,rgba(7,10,16,.98) 1px 4px),
    repeating-linear-gradient(180deg,rgba(226,188,124,.28) 0 1px,rgba(9,13,21,.97) 1px 7px),
    repeating-linear-gradient(180deg,rgba(240,204,142,.42) 0 1px,rgba(7,10,17,.98) 1px 5px),
    repeating-linear-gradient(180deg,rgba(220,182,120,.24) 0 1px,rgba(10,14,22,.96) 1px 6px),
    repeating-linear-gradient(180deg,rgba(232,196,132,.34) 0 1px,rgba(8,11,19,.97) 1px 5px),
    repeating-linear-gradient(180deg,rgba(214,176,114,.20) 0 1px,rgba(10,14,22,.95) 1px 7px);
  background-size:
    4.0% 76%, 2.6% 100%, 3.4% 58%, 2.2% 88%,
    3.0% 46%, 2.0% 70%, 2.6% 34%, 1.8% 56%;
  background-position:
    0.5% 100%, 3.6% 100%, 6.4% 100%, 9.2% 100%,
    12.0% 100%, 15.2% 100%, 18.0% 100%, 21.0% 100%;
  -webkit-mask-image:linear-gradient(90deg,#000 0%,#000 56%,transparent 88%);
  mask-image:linear-gradient(90deg,#000 0%,#000 56%,transparent 88%);
}
/* transmission pylons standing along the horizon */
.art--power .art__fx::before{
  content:"";position:absolute;left:0;right:0;bottom:30%;height:34%;z-index:6;
  background:
    repeating-linear-gradient(90deg,rgba(238,202,138,.70) 0 1px,transparent 1px 108px),
    repeating-linear-gradient(90deg,transparent 0 26px,rgba(238,202,138,.42) 26px 27px,transparent 27px 108px),
    repeating-linear-gradient(180deg,transparent 0 14px,rgba(238,202,138,.22) 14px 15px,transparent 15px 40px);
  -webkit-mask-image:linear-gradient(180deg,transparent 0%,#000 40%,#000 88%,transparent 100%);
  mask-image:linear-gradient(180deg,transparent 0%,#000 40%,#000 88%,transparent 100%);
}
/* ground plane: lines converging toward the horizon */
.apower__grid{
  position:absolute;left:-18%;right:-18%;bottom:-16%;height:70%;z-index:4;
  background:
    repeating-linear-gradient(90deg,rgba(212,164,94,.20) 0 1px,transparent 1px 26px),
    repeating-linear-gradient(180deg,rgba(212,164,94,.12) 0 1px,transparent 1px 34px);
  transform:perspective(300px) rotateX(70deg);
  transform-origin:50% 0%;
  -webkit-mask-image:linear-gradient(180deg,transparent 0%,#000 26%);
  mask-image:linear-gradient(180deg,transparent 0%,#000 26%);
}
/* bright light trails running along that ground plane */
.apower__trails{
  position:absolute;left:-18%;right:-18%;bottom:-16%;height:70%;z-index:5;
  background:repeating-linear-gradient(90deg,
    rgba(255,206,124,.86) 0 1.5px,transparent 1.5px 15px,
    rgba(236,178,92,.46) 15px 16px,transparent 16px 37px,
    rgba(214,158,80,.26) 37px 38px,transparent 38px 66px);
  transform:perspective(300px) rotateX(70deg) rotate(-1.5deg);
  transform-origin:50% 0%;
  filter:blur(.4px) saturate(1.1);
  -webkit-mask-image:linear-gradient(180deg,transparent 1%,rgba(0,0,0,.42) 16%,#000 46%,rgba(0,0,0,.72) 100%);
  mask-image:linear-gradient(180deg,transparent 1%,rgba(0,0,0,.42) 16%,#000 46%,rgba(0,0,0,.72) 100%);
}
/* long network arcs sweeping over the frame */
.art--power .art__fx::after{
  content:"";position:absolute;left:52%;top:230%;width:210%;height:440%;z-index:6;
  transform:translate(-50%,-50%);border-radius:50%;
  background:repeating-radial-gradient(circle at 50% 50%,
    rgba(240,206,142,.30) 0 1px,transparent 1px 96px);
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.5) 17%,transparent 30%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.5) 17%,transparent 30%);
}
/* warm bloom where the trails meet the horizon, plus the base vignette */
.apower__haze{
  position:absolute;inset:0;z-index:7;pointer-events:none;
  background:
    radial-gradient(ellipse 22% 26% at 42% 72%,rgba(255,236,190,.34),transparent 72%),
    radial-gradient(ellipse 58% 10% at 48% 69%,rgba(255,224,168,.20),transparent 78%),
    radial-gradient(ellipse 78% 88% at 50% 52%,transparent 40%,rgba(5,7,11,.62) 100%),
    linear-gradient(180deg,rgba(6,8,12,.5) 0%,transparent 24%,transparent 72%,rgba(6,8,12,.58) 100%);
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width:1180px){
  .artgrid{grid-template-columns:minmax(0,1fr)}
  .artside{position:static}
  .artrel__grid{grid-template-columns:repeat(2,1fr)}
  .ngrid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .artbody{padding-left:26px}
  .aprog{left:0}
  .aprog__label{left:0;transform:translate(0,4px)}
  .arthero .art{aspect-ratio:16/9}
  .artacts{width:100%;margin-left:0}
  .artacts .btn--later{flex:1;justify-content:center}
  .artdata__row{grid-template-columns:1fr;gap:4px}
  .artrel__grid,.ngrid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  .aprog__thumb,.aprog__label{transition:none}
}


/* =========================================================
   Free tier — ロックされた記事の見え方
   ========================================================= */
.ncard--locked .card__media > .art{filter:blur(2.6px) saturate(.75) brightness(.8)}
.ncard--locked .card__title{color:var(--text-2)}
.ncard__tag{margin-bottom:10px}
.ncard__deck--locked{margin-top:10px;color:var(--gold);letter-spacing:.06em}

/* 側柱が消えるため、本文列を全幅に戻す */
.artgrid--locked{grid-template-columns:minmax(0,1fr)}

.artlock{
  display:flex;flex-direction:column;align-items:center;text-align:center;gap:16px;
  margin-top:30px;padding:clamp(40px,5vw,66px) 24px;
  border:1px dashed var(--line);border-radius:var(--r-lg);
  background:radial-gradient(ellipse 70% 90% at 50% 0%,rgba(201,169,106,.07),transparent 70%);
}
.artlock__ring{
  display:flex;align-items:center;justify-content:center;width:64px;height:64px;border-radius:50%;
  border:1px solid rgba(201,169,106,.42);background:rgba(201,169,106,.08);color:var(--gold);
}
.artlock__h{font-family:var(--f-min);font-weight:400;font-size:clamp(19px,2.2vw,26px);letter-spacing:.1em;margin:0}
.artlock__p{max-width:40em;margin:0;font-size:13.5px;line-height:2;color:var(--text-2)}
.artlock__meta{margin:0;font-variant-numeric:tabular-nums;letter-spacing:.1em}

/* 読了進捗を狂わせないよう、本文の外側に置く案内 */
.artupsell{margin-top:34px}

/* =========================================================
   シリーズ（企業ごとの会員限定シリーズ）— 2026-10-07
   ========================================================= */
/* 節の見出しの時刻（押すと動画のその位置から） */
.artsec__time{
  display:inline-flex;align-items:center;gap:6px;vertical-align:middle;
  margin-left:14px;padding:3px 10px;border-radius:999px;
  border:1px solid var(--line-gold);background:rgba(201,169,106,.06);
  font-family:var(--f-sans);font-size:12px;letter-spacing:.08em;color:var(--gold);
  font-variant-numeric:tabular-nums;cursor:pointer;
  transition:background .3s var(--e),color .3s var(--e),border-color .3s var(--e);
}
.artsec__time:hover{background:rgba(201,169,106,.16);color:var(--gold-bright);border-color:var(--gold)}
.artsec__tplay{font-size:9px}
/* 見出しの下：シリーズ名と連続再生 */
.artseries{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin:16px 0 0;font-size:13px;letter-spacing:.06em}
.artseries__tag{padding:2px 10px;border-radius:var(--r);background:var(--gold-soft);color:var(--gold);font-size:11.5px;letter-spacing:.16em}
.artseries__name{color:var(--text);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-gold)}
.artseries__play{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r);
  border:1px solid var(--line-gold);color:var(--gold-bright);
}
.artseries__play:hover{background:rgba(201,169,106,.10);border-color:var(--gold)}
/* 側柱：シリーズの回 */
.sser__h{margin:0;font-family:var(--f-min);font-size:17px;line-height:1.6;letter-spacing:.06em;color:var(--text)}
.sser__meta{margin:4px 0 14px;font-size:12px;letter-spacing:.1em;color:var(--text-3)}
.sser__list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:4px}
.sepi{display:flex;align-items:flex-start;gap:12px;padding:9px 10px;border-radius:var(--r);font-size:13px;line-height:1.7;color:var(--text-2);transition:background .3s var(--e),color .3s var(--e)}
.sepi:hover{background:rgba(255,255,255,.04);color:var(--text)}
.sepi.is-current{background:var(--gold-soft);color:var(--text)}
.sepi__no{flex:none;width:22px;height:22px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--line-gold);color:var(--gold);font-size:11.5px;font-variant-numeric:tabular-nums}
.sepi.is-current .sepi__no{background:var(--gold);color:var(--bg);border-color:var(--gold)}
.sepi__t{flex:1;min-width:0}
.sepi__lock{flex:none;color:var(--text-3)}
.sser__play{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;margin-top:16px}
/* 本文の最後：次の回 */
.artnext{display:flex;flex-direction:column;gap:12px;margin-top:clamp(40px,4.4vw,60px)}
.artnext__card{
  display:flex;flex-direction:column;gap:6px;padding:22px 24px;border-radius:var(--r-lg);
  border:1px solid var(--line-gold);background:radial-gradient(ellipse 80% 120% at 0% 0%,rgba(201,169,106,.10),transparent 70%);
  transition:border-color .3s var(--e),transform .4s var(--e-out);
}
.artnext__card:hover{border-color:var(--gold);transform:translateY(-2px)}
.artnext__k{font-size:11.5px;letter-spacing:.18em;color:var(--gold)}
.artnext__t{font-family:var(--f-min);font-size:clamp(17px,1.7vw,21px);line-height:1.6;letter-spacing:.05em;color:var(--text)}
.artnext__d{font-size:13px;line-height:1.9;color:var(--text-3)}
.artflow .artnext__play,.artnext__play{
  align-self:flex-start;display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--r);
  border:1px solid var(--line-gold);color:var(--gold-bright);text-decoration:none;font-size:13px;letter-spacing:.08em;
}
.artnext__play:hover{background:rgba(201,169,106,.10)}
.artflow .artnext__card{text-decoration:none;word-break:normal}
/* 記事一覧：シリーズの棚 */
.sshelf{margin-top:30px}
.sshelf__h{margin:0 0 14px;font-size:12px;letter-spacing:.2em;color:var(--gold)}
.sshelf__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.scard{
  display:flex;flex-direction:column;gap:8px;padding:20px 22px;border-radius:var(--r-lg);
  border:1px solid var(--line-gold);background:linear-gradient(135deg,rgba(201,169,106,.09),rgba(21,25,35,.6) 60%);
}
.scard__co{font-size:11.5px;letter-spacing:.16em;color:var(--gold)}
.scard__t{font-family:var(--f-min);font-size:19px;line-height:1.5;letter-spacing:.05em;color:var(--text);margin:0}
.scard__m{font-size:12.5px;letter-spacing:.08em;color:var(--text-3)}
.scard__acts{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.scard__btn{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r);border:1px solid var(--line-gold);color:var(--gold-bright);font-size:12.5px;letter-spacing:.08em}
.scard__btn:hover{background:rgba(201,169,106,.10);border-color:var(--gold)}
.scard__btn--sub{border-color:var(--line-2);color:var(--text-2)}
.ncard__co{color:var(--gold)}
@media (max-width:860px){
  .artsec__time{margin-left:8px}
}

/* 表：長い文のセルは折り返す（横にはみ出さない）。2026-10-07 */
.arttable td.arttable__wrap{white-space:normal;min-width:14em;line-height:1.85}
.arttable{scrollbar-color:var(--line-2) transparent;scrollbar-width:thin}
.arttable::-webkit-scrollbar{height:8px}
.arttable::-webkit-scrollbar-track{background:transparent}
.arttable::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:4px}
@media (max-width:860px){
  /* 狭い画面では、表を行ごとのカードにする（見出しを各セルの前に出す） */
  .arttable{overflow:visible}
  .arttable table,.arttable tbody,.arttable tr,.arttable td{display:block;width:100%}
  .arttable thead{display:none}
  .arttable tr{padding:12px 16px}
  .arttable tr + tr{border-top:1px solid var(--line)}
  .arttable td,.arttable tr:first-child td{border-top:0;padding:3px 0;white-space:normal;min-width:0}
  .arttable td[data-label]:not([data-label=""])::before{
    content:attr(data-label);display:inline-block;min-width:5.5em;margin-right:10px;
    font-size:11.5px;letter-spacing:.1em;color:var(--gold);vertical-align:top
  }
  .arttable td.arttable__wrap::before{display:block !important;margin:0 0 2px}
}

/* 図の拡大（押すとポップアップ）2026-10-07 */
.artfig img{cursor:zoom-in}
.artfig img:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.artzoom{
  position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;
  padding:clamp(16px,4vw,48px);background:rgba(5,7,10,.92);backdrop-filter:blur(6px);cursor:zoom-out;
  animation:artzoomIn .25s var(--e-out);
}
.artzoom[hidden]{display:none}
.artzoom__fig{margin:0;max-width:min(1600px,100%);max-height:100%;display:flex;flex-direction:column;gap:12px;cursor:default}
.artzoom__fig img{display:block;max-width:100%;max-height:calc(100vh - 120px);object-fit:contain;border-radius:var(--r);border:1px solid var(--line-gold);background:var(--bg)}
.artzoom__fig figcaption{font-size:13px;line-height:1.8;color:var(--text-2);text-align:center}
.artzoom__close{
  position:absolute;top:14px;right:16px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line-gold);background:rgba(13,16,23,.9);color:var(--text);font-size:26px;line-height:1;cursor:pointer
}
.artzoom__close:hover{border-color:var(--gold);color:var(--gold-bright)}
html.artzoom-open{overflow:hidden}
@keyframes artzoomIn{from{opacity:0}to{opacity:1}}
@media (prefers-reduced-motion:reduce){.artzoom{animation:none}}

/* 右下の「上へ戻る」2026-10-07 */
.arttop{
  position:fixed;right:clamp(16px,2.4vw,32px);bottom:calc(clamp(16px,2.4vw,32px) + env(safe-area-inset-bottom,0px));z-index:80;
  display:grid;place-items:center;width:48px;height:48px;border-radius:50%;
  border:1px solid var(--line-gold);background:rgba(13,16,23,.88);color:var(--gold-bright);
  backdrop-filter:blur(8px);cursor:pointer;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .35s var(--e),transform .45s var(--e-out),border-color .3s var(--e),background .3s var(--e);
}
.arttop.is-on{opacity:1;transform:none;pointer-events:auto}
.arttop:hover{border-color:var(--gold);background:rgba(201,169,106,.14)}
.arttop:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
html.artzoom-open .arttop{display:none}
@media (prefers-reduced-motion:reduce){.arttop{transition:none}}