/* しくみ早見 ── 2026-08-31 作り直し。箱を作らない・影ゼロ・巨大な文字・全画面の絵。 */
:root{
  --ink-100:#DCE2EA; --ink-200:#AFB8C4; --ink-300:#7E8895; --ink-400:#434C58; --ink-500:#151A21;
  --paper:#F4F2ED; --paper-2:#FAF9F6; --paper-3:#E8E5DE; --paper-4:#1A1F27;
  --nushi:#17486E; --nushi-2:#3C86BE;
  --uke:#C77A1E;   --uke-2:#E8AE58;
  --chui:#B3382C;
  --ease-deru:cubic-bezier(.16,1,.30,1);
  --ease-modoru:cubic-bezier(.7,0,.84,0);
  --ease-men:cubic-bezier(.83,0,.17,1);
  --ease-yure:cubic-bezier(.34,1.26,.42,1);
  --t-iro:.2s; --t-idou:.5s; --t-men:1.05s;
  --stable-lvh:1vh;
  --s1:4px; --s2:8px; --s3:12px; --s4:20px; --s5:32px; --s6:52px; --s7:84px; --s8:136px; --s9:220px;
  --gut:clamp(20px,4.6vw,88px);
  --col:62ch;
  color-scheme:light dark;
}
@supports(height:1svh){:root{--stable-lvh:1svh}}
@media (prefers-color-scheme:dark){:root{
  --ink-100:#262D37; --ink-200:#39434F; --ink-300:#7A8593; --ink-400:#AEB8C4; --ink-500:#EDF1F6;
  --paper:#12161C; --paper-2:#181D24; --paper-3:#0D1116; --paper-4:#F4F2ED;
  --nushi:#6FAEDD; --nushi-2:#9BCBEC; --uke:#E5AC55; --uke-2:#F2CC8C; --chui:#E2786A;
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:auto}
body{margin:0;background:var(--paper);color:var(--ink-500);
  font-family:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN",system-ui,sans-serif;
  font-size:17px;line-height:1.92;letter-spacing:.022em;overflow-x:hidden}
.num,.fn,time,.mono{font-family:"Roboto Mono",ui-monospace,monospace;font-feature-settings:"tnum" 1;letter-spacing:-.02em}
h1,h2,h3,.mi{font-family:"Shippori Mincho","Hiragino Mincho ProN",serif;font-weight:600}
h1,h2,h3{line-height:1.1;margin:0}
h2{font-size:clamp(26px,3.6vw,52px);letter-spacing:-.028em;line-height:1.14}
h3{font-size:clamp(18px,1.8vw,23px);letter-spacing:-.012em;line-height:1.34}
p{margin:0 0 var(--s4)}
a{color:var(--nushi);text-underline-offset:4px;text-decoration-thickness:1px}
.wr{display:inline-block}
img{max-width:100%;height:auto;display:block}
.en{font-family:"Roboto Mono",monospace;letter-spacing:.22em;font-size:11.5px;text-transform:uppercase}

/* ── 骨格：全幅が既定。読む段だけ細くする（箱を作らない） */
.full{width:100%;position:relative}
.hold{width:min(1320px,calc(100% - var(--gut)*2));margin-inline:auto}
.read{max-width:var(--col);margin-left:clamp(0px,10vw,190px)}
.duo{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:clamp(28px,6vw,110px);align-items:start}
@media(max-width:940px){.duo{grid-template-columns:minmax(0,1fr)} .read{margin-left:0}}

/* ── 地の絵（D-17）。全画面に敷く */
.art{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.art + *{position:relative;z-index:1}

/* ── ヘッダー：線だけ。箱にしない */
.hd{position:fixed;top:0;left:0;right:0;z-index:60;color:var(--ink-500)}
.hd::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,var(--paper) 8%,color-mix(in srgb,var(--paper) 72%,transparent) 58%,transparent);
  backdrop-filter:blur(5px)}
.hd__in{display:flex;justify-content:space-between;align-items:center;
  width:min(1320px,calc(100% - var(--gut)*2));margin-inline:auto;height:64px}
.hd a{color:inherit;text-decoration:none}
.hd__lg{font-family:"Shippori Mincho",serif;font-weight:600;font-size:16px;letter-spacing:.06em}
.hd__nv{display:flex;gap:clamp(14px,2vw,30px);font-family:"Roboto Mono",monospace;font-size:11.5px;letter-spacing:.16em}
.hd__nv a{position:relative}
.hd__nv a::after{content:"";position:absolute;left:0;right:100%;bottom:-4px;height:1px;background:currentColor;
  transition:right var(--t-idou) var(--ease-deru)}
.hd__nv a:hover::after,.hd__nv a[aria-current]::after{right:0}

/* ── 表紙：全画面。巨大な数字と、重なる文字 */
.hero{min-height:calc(100 * var(--stable-lvh));display:grid;align-items:end;
  position:relative;overflow:hidden;background:var(--paper-3);padding-bottom:clamp(28px,7vh,80px)}
.hero__in{position:relative;z-index:1;width:min(1320px,calc(100% - var(--gut)*2));margin-inline:auto}
.hero__k{color:var(--uke)}
.hero__big{font-family:"Roboto Mono",monospace;font-weight:700;
  font-size:clamp(96px,22vw,340px);line-height:.82;letter-spacing:-.055em;color:var(--nushi);
  margin:.06em 0 0 -.04em;display:block;mix-blend-mode:multiply}
@media (prefers-color-scheme:dark){.hero__big{mix-blend-mode:screen}}
.hero__u{font-family:"Shippori Mincho",serif;font-size:clamp(20px,3vw,44px);letter-spacing:-.02em;
  color:var(--ink-500);margin-left:.15em}
.hero__t{font-family:"Shippori Mincho",serif;font-weight:600;
  font-size:clamp(26px,4.4vw,66px);line-height:1.14;letter-spacing:-.03em;
  margin:clamp(-42px,-3.4vw,-16px) 0 0 clamp(60px,17vw,320px);position:relative;z-index:2}
.hero__lede{max-width:44ch;color:var(--ink-400);font-size:15.5px;margin-top:var(--s5);
  margin-left:clamp(60px,17vw,320px)}
.hero__cue{position:absolute;right:var(--gut);bottom:clamp(24px,6vh,64px);z-index:2;
  font-family:"Roboto Mono",monospace;font-size:11px;letter-spacing:.2em;color:var(--ink-300);
  writing-mode:vertical-rl}
.hero__cue::after{content:"";display:block;width:1px;height:58px;background:var(--ink-300);margin:12px auto 0;
  transform-origin:top;animation:nagare 2.4s var(--ease-men) infinite}

/* 1字ずつ出る（D-18） */
.ch{display:inline-block;opacity:0;transform:translateY(.5em) rotate(2deg)}
html.rv-ready .ch{transition:opacity .7s var(--ease-deru),transform .7s var(--ease-deru)}
html:not(.rv-ready) .ch{opacity:1;transform:none}
.ch.on{opacity:1;transform:none}

/* ── 横に流れる帯（D-18） */
.mq{overflow:hidden;padding:var(--s4) 0;border-top:1px solid var(--ink-100);border-bottom:1px solid var(--ink-100);
  background:var(--paper)}
.mq__i{display:flex;gap:clamp(30px,5vw,72px);width:max-content;animation:nagaru 46s linear infinite}
.mq__c{display:inline-flex;align-items:baseline;gap:10px;white-space:nowrap;font-size:14px;color:var(--ink-400)}
.mq__c b{font-family:"Roboto Mono",monospace;font-size:clamp(20px,2.4vw,34px);color:var(--nushi);font-weight:700;
  letter-spacing:-.03em}
.mq__c:nth-child(3n) b{color:var(--uke)} .mq__c:nth-child(3n+2) b{color:var(--chui)}

/* ── 写真の置き方 5種類（D-16） */
.ph--bleed{width:100vw;margin-left:calc(50% - 50vw)}
.ph--bleed img{width:100%;height:clamp(280px,54vw,720px);object-fit:cover}
.ph--over{width:min(58vw,760px);margin-left:auto;margin-right:calc(-1 * var(--gut) - 4vw)}
.ph--over img{width:100%;height:clamp(240px,38vw,520px);object-fit:cover}
.ph--arc{width:min(42vw,470px)}
/* 弧は border-radius で作る（clip-path の固定座標だと画像の上が切れる） */
.ph--arc img{width:100%;height:clamp(320px,44vw,600px);object-fit:cover;
  border-radius:50% 50% 2px 2px / 34% 34% 2px 2px}
.ph--circ{width:min(34vw,360px)}
.ph--circ img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:50%}
.ph--slim{width:min(30vw,320px)}
.ph--slim img{width:100%;height:200px;object-fit:cover}
.cap{font-size:11.5px;color:var(--ink-300);line-height:1.6;margin-top:8px}

/* 文字と重ねる */
.lay{position:relative}
.lay__t{position:absolute;left:clamp(-8px,-1vw,0px);bottom:clamp(-18px,-2.4vw,-6px);z-index:2;
  font-family:"Shippori Mincho",serif;font-weight:600;
  font-size:clamp(40px,10vw,150px);line-height:.9;letter-spacing:-.04em;color:var(--paper-2);
  text-shadow:0 0 1px rgba(0,0,0,.18);pointer-events:none}

/* ── 章：固定して数字が変わる（D-18） */
.stick{position:relative}
.stick__n{position:sticky;top:0;height:calc(100 * var(--stable-lvh));display:grid;align-content:center;
  font-family:"Roboto Mono",monospace;font-weight:700;font-size:clamp(70px,16vw,240px);line-height:.85;
  letter-spacing:-.06em;color:var(--ink-100);pointer-events:none}
.stick__b{margin-top:calc(-100 * var(--stable-lvh))}

/* ── 一覧：カードではなく、罫線1本の行 */
.rows{border-top:1px solid var(--ink-200)}
.row{display:grid;grid-template-columns:74px minmax(0,1fr) auto;gap:clamp(14px,3vw,44px);align-items:center;
  padding:clamp(18px,2.6vw,34px) 0;border-bottom:1px solid var(--ink-100);
  text-decoration:none;color:inherit;position:relative;overflow:hidden;
  transition:padding-left var(--t-idou) var(--ease-deru),color var(--t-iro) var(--ease-deru)}
.row:hover{padding-left:22px;color:var(--nushi)}
.row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--uke);
  transform:scaleY(0);transform-origin:bottom;transition:transform var(--t-idou) var(--ease-deru)}
.row:hover::before{transform:scaleY(1);transform-origin:top}
.row__n{font-family:"Roboto Mono",monospace;font-size:clamp(22px,2.4vw,34px);color:var(--ink-200);font-weight:700;
  letter-spacing:-.04em;transition:color var(--t-iro) var(--ease-deru)}
.row:hover .row__n{color:var(--uke)}
.row__t{font-family:"Shippori Mincho",serif;font-weight:600;font-size:clamp(17px,1.9vw,25px);line-height:1.34;
  letter-spacing:-.014em}
.row__c{font-family:"Roboto Mono",monospace;font-size:11px;letter-spacing:.16em;color:var(--ink-300)}
@media(max-width:600px){.row{grid-template-columns:52px minmax(0,1fr)}.row__c{display:none}}

/* ── 数字の見せ場（全画面・写真の上に巨大な数字） */
.stat{position:relative;min-height:calc(88 * var(--stable-lvh));display:grid;align-items:center;
  overflow:hidden;padding:clamp(80px,12vh,140px) 0}
.stat__bg{position:absolute;inset:-9% 0;z-index:0;will-change:transform}
.stat::after{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:linear-gradient(100deg,var(--paper) 4%,color-mix(in srgb,var(--paper) 62%,transparent) 44%,transparent 78%)}
.stat__bg img{width:100%;height:118%;object-fit:cover;opacity:.42}
@media (prefers-color-scheme:dark){.stat__bg img{opacity:.22}}
.stat__in{position:relative;z-index:2;width:min(1320px,calc(100% - var(--gut)*2));margin-inline:auto}
.stat__v{font-family:"Roboto Mono",monospace;font-weight:700;font-size:clamp(72px,17vw,260px);line-height:.84;
  letter-spacing:-.055em;color:var(--nushi)}
.stat__u{font-family:"Shippori Mincho",serif;font-size:clamp(18px,2.4vw,38px);margin-left:.16em;color:var(--ink-500)}
.stat__t{max-width:36ch;margin-top:var(--s4);font-size:16px;color:var(--ink-400)}
.stat__s{font-family:"Roboto Mono",monospace;font-size:11.5px;color:var(--ink-300);margin-top:var(--s3);letter-spacing:.04em}

/* ── 開示：線1本。箱にしない */
.ad{border-left:2px solid var(--uke);padding:var(--s3) var(--s4);
  background:color-mix(in srgb,var(--paper-2) 76%,transparent);backdrop-filter:blur(3px);
  font-size:13.5px;line-height:1.7;color:var(--ink-400);margin:0 0 var(--s5);max-width:60ch}
.ad b{color:var(--uke);display:block;font-family:"Roboto Mono",monospace;font-size:10.5px;letter-spacing:.18em;margin-bottom:3px}
.adbox{border-top:1px solid var(--ink-200);border-bottom:1px solid var(--ink-200);padding:var(--s4) 0;margin:var(--s6) 0;max-width:var(--col)}
.adbox__t{font-family:"Roboto Mono",monospace;font-size:10.5px;letter-spacing:.18em;color:var(--uke);margin:0 0 var(--s2)}
.adbox__b{min-height:64px;display:grid;place-items:center;color:var(--ink-300);font-size:13px;
  background:repeating-linear-gradient(46deg,transparent 0 9px,var(--ink-100) 9px 10px)}

/* ── 表：罫線だけ */
.tw{overflow-x:auto;margin:var(--s5) 0 var(--s6)}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:min(100%,420px)}
thead th{border-bottom:2px solid var(--ink-500);padding:10px 14px 8px 0;text-align:left;
  font-family:"Roboto Mono",monospace;font-size:11.5px;letter-spacing:.14em;color:var(--ink-400);font-weight:400}
tbody td{padding:14px 14px 14px 0;border-bottom:1px solid var(--ink-100);line-height:1.7;vertical-align:top}
tbody td:first-child{font-weight:600}
tbody tr{transition:background var(--t-iro) var(--ease-deru)}
tbody tr:hover{background:color-mix(in srgb,var(--nushi) 6%,transparent)}

.src{font-size:12.5px;line-height:1.7;color:var(--ink-300);margin:0 0 var(--s6);max-width:58ch;
  padding-top:var(--s2);border-top:1px solid var(--ink-100)}
.src::before{content:"出どころ";display:block;font-family:"Roboto Mono",monospace;font-size:10px;
  letter-spacing:.2em;color:var(--nushi);margin-bottom:4px}
.note{font-size:14px;line-height:1.78;color:var(--ink-400);border-left:2px solid var(--chui);
  padding-left:var(--s4);margin:0 0 var(--s6);max-width:58ch}

figure{margin:var(--s6) 0}
.fig svg{width:100%;height:auto;overflow:visible}
.fl{font-size:12.5px;fill:var(--ink-400);font-family:"Zen Kaku Gothic New",sans-serif}
.fh{font-size:11.5px;fill:var(--paper-2);font-family:"Zen Kaku Gothic New",sans-serif}
.fs{font-size:11px;fill:var(--ink-300);font-family:"Zen Kaku Gothic New",sans-serif}
.fs2{font-size:11.5px;fill:var(--ink-400);font-family:"Zen Kaku Gothic New",sans-serif}
.fn{font-size:15px;fill:var(--ink-500);font-family:"Roboto Mono",monospace}
.fn.fw{fill:var(--paper-2);font-weight:700}
.fn.fw2{fill:var(--ink-500);font-weight:700;font-size:20px}
figcaption{font-size:12.5px;color:var(--ink-300);margin-top:var(--s3);line-height:1.6;max-width:56ch}

.lab{display:inline-flex;align-items:center;gap:var(--s3);font-family:"Roboto Mono",monospace;
  font-size:11px;letter-spacing:.22em;color:var(--uke);margin-bottom:var(--s4)}
.lab::before{content:"";width:clamp(22px,4vw,58px);height:1px;background:var(--uke)}
.meta{display:flex;gap:var(--s5);flex-wrap:wrap;font-size:12px;color:var(--ink-300);
  margin:var(--s4) 0 var(--s5);font-family:"Roboto Mono",monospace;letter-spacing:.06em}
.lede{font-size:19px;line-height:1.8;color:var(--ink-400);margin-bottom:var(--s6);max-width:46ch}
.bc{font-family:"Roboto Mono",monospace;font-size:11px;letter-spacing:.14em;color:var(--ink-300);padding:var(--s5) 0 0}
.bc a{color:var(--ink-400);text-decoration:none}
.bc span{margin:0 8px;color:var(--ink-200)}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:var(--s5);margin-top:var(--s8);
  border-top:1px solid var(--ink-200);padding-top:var(--s5)}
.pn a{text-decoration:none;color:inherit}
.pn .en{color:var(--uke);display:block;margin-bottom:var(--s2)}
.pn h3{font-size:clamp(16px,1.7vw,21px)}
@media(max-width:600px){.pn{grid-template-columns:1fr}}

/* ── フッター：暗い面で締める */
.ft{background:var(--paper-4);color:var(--paper);padding:var(--s8) 0 var(--s6);position:relative;overflow:hidden}
@media (prefers-color-scheme:dark){.ft{color:var(--paper-3)}}
.ft__big{font-family:"Shippori Mincho",serif;font-weight:600;
  font-size:clamp(38px,11vw,168px);line-height:.9;letter-spacing:-.04em;opacity:.16;margin-bottom:var(--s6)}
.ft__g{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:var(--s6);position:relative;z-index:1}
@media(max-width:760px){.ft__g{grid-template-columns:1fr}}
.ft h3{font-family:"Roboto Mono",monospace;font-size:10.5px;letter-spacing:.2em;
  color:currentColor;opacity:.6;margin-bottom:var(--s3);font-weight:400}
.ft ul{list-style:none;margin:0;padding:0;font-size:14px;line-height:2.1}
.ft a{color:currentColor;text-decoration:none;opacity:.86}
.ft a:hover{opacity:1;text-decoration:underline}
.ft__c{font-size:12px;opacity:.6;margin-top:var(--s6);line-height:1.9;position:relative;z-index:1}

/* 出る仕掛け：JSが動いたときだけ隠す */
.rv{opacity:1;transform:none}
html.rv-ready .rv{opacity:0;transform:translateY(20px)}
html.rv-ready .rv[data-rv="in"]{opacity:1;transform:none;
  transition:opacity var(--t-men) var(--ease-deru),transform var(--t-men) var(--ease-deru)}
/* 画像は四角以外の形で開く（D-13） */
html.rv-ready .wipe{clip-path:inset(0 0 0 100%)}
html.rv-ready .wipe[data-rv="in"]{clip-path:inset(0 0 0 0);
  transition:clip-path 1.15s var(--ease-men)}

/* ★数値の図を動かす（D-19）。図が画面に入ったら、棒が伸び、円が描かれる */
.bar{transform:scaleX(0);transition:transform 1.1s var(--ease-men)}
[data-rv="in"] .bar{transform:scaleX(1)}
.bar--d1{transition-delay:.16s} .bar--d2{transition-delay:.3s}
.ring{stroke-dasharray:var(--len);stroke-dashoffset:var(--len);
  transition:stroke-dashoffset 1.4s var(--ease-men) .2s}
[data-rv="in"] .ring{stroke-dashoffset:calc(var(--len) * (1 - var(--ratio)))}
@media (prefers-reduced-motion:reduce){
  .bar{transform:scaleX(1)!important}
  .ring{stroke-dashoffset:calc(var(--len) * (1 - var(--ratio)))!important}
}

@keyframes nagaru{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@keyframes nagare{0%{transform:scaleY(0);opacity:0}40%{opacity:1}100%{transform:scaleY(1);opacity:0}}
@keyframes ukabu{from{transform:translateY(24px);opacity:0}to{transform:none;opacity:1}}
@keyframes hiraku{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
@keyframes mawaru{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes noboru{from{transform:translateY(.5em);opacity:0}to{transform:none;opacity:1}}
@keyframes usureru{from{opacity:0}to{opacity:1}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important}
  html.rv-ready .rv,html.rv-ready .wipe{opacity:1!important;transform:none!important;clip-path:none!important}
  .ch{opacity:1!important;transform:none!important}
}
@media print{.hd,.mq{display:none}body{background:#fff}}