/* =========================================================
   Aidle Core — site.css (v6 / 2026-10-02)
   Mobile-first. Monochrome only: black / white / gray / silver.
   Breakpoints: base (phone) → 768px (tablet) → 1024px (desktop)
   ========================================================= */
:root{
  --black:#060607;
  --ink:#0c0c0e;
  --ink-2:#141518;
  --paper:#ebebed;
  --paper-2:#e1e1e5;
  --white:#f7f7f8;
  --d-mute:#9a9da5;      /* dark bg, body-small text (≈7:1) */
  --d-text-3:#7f838c;    /* dark bg, small text (≈5:1) */
  --d-mute-2:#4a4d55;    /* decoration only */
  --l-mute:#55585f;      /* light bg, small text (≈6:1) */
  --d-line:rgba(255,255,255,.13);
  --l-line:rgba(12,12,14,.15);
  --silver:linear-gradient(115deg,#fdfdfe 0%,#b9bdc5 30%,#6f747d 48%,#d9dce1 66%,#ffffff 82%,#9a9ea7 100%);
  --display:"Inter Tight","Helvetica Neue",Arial,sans-serif;
  --ja:"Noto Sans JP","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  --serif:"Noto Serif JP","Hiragino Mincho ProN","Yu Mincho",serif;
  --mono:"JetBrains Mono","Noto Sans JP",ui-monospace,"SF Mono",Menlo,"Hiragino Sans","Yu Gothic",Meiryo,monospace;
  --fs-xs:.78125rem;--fs-s:.875rem;--fs-m:1rem;--fs-l:1.0625rem;
  --ease:cubic-bezier(.16,1,.3,1);
  --ease-io:cubic-bezier(.76,0,.24,1);
  --sa-t:env(safe-area-inset-top,0px);
  --sa-b:env(safe-area-inset-bottom,0px);
  --sa-l:env(safe-area-inset-left,0px);
  --sa-r:env(safe-area-inset-right,0px);
  --header:56px;
  --dock:60px;
  --act-head:44px;
  --micro:12px;
  --pad:max(20px, calc(var(--sa-l) + 16px));
}
@media (min-width:1024px){ :root{ --header:72px; --pad:clamp(24px,4vw,56px) } }

*,*::before,*::after{box-sizing:border-box}
html{
  color-scheme:dark;
  -webkit-text-size-adjust:100%;text-size-adjust:100%;
  scroll-padding-top:calc(var(--sa-t) + var(--header) + 12px);
  scroll-padding-bottom:calc(var(--dock) + var(--sa-b) + 32px);
  scroll-behavior:smooth;scrollbar-gutter:stable;
}
html.motion-off{scroll-behavior:auto}
html[data-base="light"]{color-scheme:only light}
.sheet,.dock{color-scheme:dark}
html.sheet-open{overflow:hidden}
@media (min-width:1024px){ html{scroll-padding-bottom:24px} }
body{
  margin:0;background:var(--black);color:var(--white);
  font-family:var(--ja);font-size:var(--fs-m);line-height:1.95;letter-spacing:.04em;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  line-break:strict;overflow-x:hidden;overflow-x:clip;
}
body.home{padding-bottom:calc(var(--dock) + var(--sa-b) + 24px)}
@media (min-width:1024px){ body.home{padding-bottom:0} }
h1,h2,h3,h4,.mono,.ui,button{font-feature-settings:"palt"}
@supports (word-break:auto-phrase){ h1,h2,h3,h4,.beat,.serif,.item-lead,.pcard-one{word-break:auto-phrase} }
@supports not (word-break:auto-phrase){ .item-lead{word-break:keep-all;overflow-wrap:anywhere} }
img,svg,canvas{display:block;max-width:100%}
p,li,dd{text-wrap:pretty}
h1,h2,h3,h4{text-wrap:balance}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;-webkit-tap-highlight-color:transparent}
a{-webkit-tap-highlight-color:transparent}
::selection{background:#fff;color:#000}
.light::selection,.light ::selection,.act::selection,.act ::selection,.card-core::selection,.card-core ::selection,.mock-human::selection,.mock-human ::selection,.page-body::selection,.page-body ::selection{background:#060607;color:#f7f7f8}
.mock-btn::selection,.mock-btn ::selection,.mock-confirm-act span:last-child::selection{background:#fff;color:#000}
.seg label:has(input:checked)::selection,.seg label:has(input:checked) ::selection{background:#060607;color:#f7f7f8}
@media (max-width:1023.98px){ .principles-list li:nth-child(3)::selection,.principles-list li:nth-child(3) ::selection{background:#fff;color:#000} }
:focus-visible{outline:2px solid #060607;outline-offset:2px;box-shadow:0 0 0 4px #f7f7f8;border-radius:3px}
[tabindex="-1"]:focus{outline:none;box-shadow:none}
.mono{font-family:var(--mono);font-size:max(12px,.75rem);letter-spacing:.12em;text-transform:uppercase;line-height:1.6}
.serif{font-family:var(--serif);font-weight:500;letter-spacing:.06em}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;margin:-1px;padding:0;border:0}
.nw{display:inline-block}
.no-js .js-only{display:none!important}
.js .no-js-only{display:none!important}
.skip-link{position:fixed;top:calc(var(--sa-t) + 8px);left:8px;z-index:400;background:#fff;color:#000;padding:10px 16px;border-radius:8px;transform:translateY(-300%)}
.skip-link:focus{transform:none}
.wrap{padding-inline:var(--pad);max-width:1600px;margin-inline:auto}

/* ---------- reveal (line mask) ---------- */
.line{display:block;overflow:hidden;padding-bottom:.1em;margin-bottom:-.1em}
.line>span{display:inline-block}
.js [data-reveal] .line>span{transform:translate3d(0,108%,0);transition:transform 1.2s var(--ease)}
.js [data-reveal].in .line>span{transform:none}
.js [data-reveal].in .line:nth-child(2)>span{transition-delay:.08s}
.js .fade{opacity:0;transform:translate3d(0,24px,0);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.js .fade.in{opacity:1;transform:none}
.motion-off [data-reveal] .line>span,.motion-off .fade{transform:none!important;opacity:1!important;transition:none!important}
@keyframes ldLine{from{transform:translate3d(0,108%,0)}}
@keyframes ldFade{from{opacity:0;transform:translate3d(0,24px,0)}}
.js [data-reveal="load"] .line>span{transform:none;animation:ldLine 1.2s var(--ease) .05s backwards}
.js [data-reveal="load"] .line:nth-child(2)>span{animation-delay:.13s}
.js .fade.fade--load{opacity:1;transform:none;animation:ldFade 1s var(--ease) .1s backwards}
.motion-off [data-reveal="load"] .line>span,.motion-off .fade--load{animation:none}

/* ---------- loader (desktop only, first visit) ---------- */
.loader{display:none}
@media (min-width:1024px){
  .js:not(.motion-off) .loader{
    display:grid;place-items:center;position:fixed;inset:0;z-index:300;background:var(--black);color:var(--white);
    clip-path:inset(0 0 0 0);transition:clip-path 1s var(--ease-io);animation:loaderSafety .01s 5s forwards;
  }
  .is-loaded .loader{clip-path:inset(0 0 100% 0);pointer-events:none}
}
@keyframes loaderSafety{to{clip-path:inset(0 0 100% 0);pointer-events:none;visibility:hidden}}
.loader-inner{width:min(420px,100% - 48px)}
.loader-brand{margin:0 0 28px;color:var(--d-mute)}
.loader-log{list-style:none;margin:0 0 40px;padding:0}
.loader-log li{display:flex;align-items:center;gap:12px;opacity:0;transform:translateY(6px);transition:opacity .35s,transform .35s var(--ease)}
.loader-log li.on{opacity:1;transform:none}
.loader-log li span{color:var(--d-mute)}
.loader-log li i{flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--d-mute-2) 0 2px,transparent 2px 6px)}
.loader-log li b{font-weight:500}
.loader-count{font-family:var(--display);font-weight:200;font-size:clamp(4rem,14vw,8rem);line-height:.9;letter-spacing:-.04em;display:flex;align-items:flex-start;gap:6px}
.loader-count small{font-size:.22em;letter-spacing:0;margin-top:.5em;color:var(--d-mute)}
.loader-bar{height:1px;background:var(--d-line);margin-top:22px;overflow:hidden}
.loader-bar i{display:block;height:100%;background:#fff;transform-origin:left;transform:scaleX(0)}

/* ---------- grain / cursor / hud ---------- */
.grain{
  position:fixed;inset:0;z-index:150;pointer-events:none;opacity:.05;
  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='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
@media (pointer:fine){
  html:not(.motion-off) .grain{inset:-120px;animation:grain 1.2s steps(6) infinite}
}
@keyframes grain{0%,100%{transform:translate(0,0)}20%{transform:translate(-90px,40px)}40%{transform:translate(60px,-70px)}60%{transform:translate(-100px,-20px)}80%{transform:translate(80px,60px)}}
.cursor{display:none}
@media (pointer:fine) and (min-width:1024px){
  .js:not(.motion-off) .cursor{display:block;position:fixed;left:0;top:0;z-index:180;pointer-events:none;mix-blend-mode:difference}
  .cursor i{position:fixed;left:0;top:0;border-radius:50%;background:#fff;will-change:transform}
  .cursor-dot{width:6px;height:6px;margin:-3px 0 0 -3px}
  .cursor-ring{width:40px;height:40px;margin:-20px 0 0 -20px;background:transparent!important;border:1px solid #fff;opacity:.6;transition:width .45s var(--ease),height .45s var(--ease),margin .45s var(--ease)}
  .cursor.hover .cursor-ring{width:84px;height:84px;margin:-42px 0 0 -42px;background:#fff!important;opacity:1}
  .cursor.hidden{opacity:0}
  .cursor{transition:opacity .2s}
  html.sheet-open .cursor{opacity:0}
}
.hud{display:none}
@media (min-width:1024px){
  .hud{display:block;position:fixed;left:0;right:0;top:0;z-index:125;height:2px;pointer-events:none;mix-blend-mode:difference}
  .hud-bar{display:block;height:100%}
  .hud-bar i{display:block;height:100%;background:#fff;transform-origin:left;transform:scaleX(0)}
}

/* ---------- status dot ---------- */
.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:currentColor;flex:none;animation:idlePulse 3.2s ease-in-out infinite}
.motion-off .status-dot{animation:none}
@keyframes idlePulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:120;
  height:calc(var(--header) + var(--sa-t));padding:var(--sa-t) var(--pad) 0;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  color:#fff;mix-blend-mode:difference;transition:transform .6s var(--ease);
}
.site-header.away{transform:translateY(-110%)}
.header-scrim{position:fixed;inset:0 0 auto;z-index:119;height:calc(var(--header) + var(--sa-t));background:rgba(6,6,7,.94);opacity:0;pointer-events:none;transform:translateY(-110%);transition:transform .6s var(--ease),opacity .3s,background-color .3s}
html.header-in .header-scrim{transform:none}
html[data-surf="light"] .header-scrim{background:rgba(235,235,237,.96)}
html.past-hero:not(.act-stuck) .header-scrim{opacity:1}
.motion-off .header-scrim{transition:none}
@media (prefers-reduced-transparency:reduce),(prefers-contrast:more){ .header-scrim{background:#060607;backdrop-filter:none;-webkit-backdrop-filter:none} html[data-surf="light"] .header-scrim{background:#ebebed} }
html[data-surf="light"] body[data-page="build"] .header-scrim{background:rgba(225,225,229,.96)}
@media (prefers-reduced-transparency:reduce),(prefers-contrast:more){ html[data-surf="light"] body[data-page="build"] .header-scrim{background:#e1e1e5} }
.site-header:has(:focus-visible){transform:none}
.motion-off .site-header{transition:none}
.wordmark{display:inline-flex;align-items:baseline;gap:.34em;font-family:var(--display);font-size:1.22rem;letter-spacing:-.01em;line-height:1;white-space:nowrap;min-height:44px;align-items:center}
.wordmark b{font-weight:600}
.wordmark span{font-weight:300}
.site-nav,.header-side{display:none}
body:not(.home) .header-side{display:flex}
body:not(.home) .header-status .prep{display:none}
@media (max-width:1023.98px){
  body.home .header-side{display:flex;gap:0}
  body.home .header-side .header-status{display:none}
  .site-header .motion-switch.mono .ms-en{display:none}
  body:not(.home) .header-side .motion-switch{display:none}
}
.header-side{align-items:center;gap:18px}
.header-status{display:flex;align-items:center;gap:10px;margin:0}
.header-status .prep{margin-right:8px;color:#a3a3a6}
.header-status.mono:not([lang="en"]){font-family:var(--ja);letter-spacing:.06em}
.motion-switch.mono{min-height:44px;display:inline-flex;align-items:center;gap:8px}
.motion-switch.mono .ms-ja{font-family:var(--ja);text-transform:none;letter-spacing:.06em}
.motion-switch.mono .ms-en{color:var(--d-text-3)}
.site-header .motion-switch.mono .ms-en{color:#a3a3a6}
.header-status,.motion-switch.mono{white-space:nowrap}
.motion-switch.mono::before{content:"";width:22px;height:12px;border-radius:999px;border:1px solid currentColor;background:linear-gradient(currentColor,currentColor) 2px 50%/6px 6px no-repeat;transition:background-position .3s var(--ease)}
.motion-switch.mono[aria-checked="true"]::before{background-position:calc(100% - 2px) 50%}
@media (min-width:1024px){
  .site-nav{display:block}
  .header-side{display:flex}
  .site-nav ul{list-style:none;display:flex;gap:clamp(16px,2.2vw,36px);margin:0;padding:0;align-items:center}
  .site-nav a,.site-nav button{position:relative;display:inline-flex;gap:8px;align-items:baseline;font-family:var(--display);font-size:.9rem;letter-spacing:.01em;min-height:44px;align-items:center}
  .site-nav small{font-family:var(--mono);font-size:var(--micro);opacity:.65}
  .site-nav a::after{content:"";position:absolute;left:0;right:0;bottom:8px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .6s var(--ease)}
  .site-nav a:hover::after,.site-nav a:focus-visible::after{transform:scaleX(1);transform-origin:left}
  .site-nav a[aria-current]::after{transform:scaleX(1);transform-origin:left}
  .site-nav a:not([aria-current]){opacity:.78}
  .site-nav a:not([aria-current]):hover,.site-nav a:not([aria-current]):focus-visible{opacity:1}
  .site-nav .nav-toc{border:1px solid currentColor;border-radius:999px;padding:0 14px;min-height:34px}
}

@media (min-width:1024px) and (max-width:1199.98px){
  .site-header .motion-switch .ms-en{display:none}
  .site-nav ul{gap:clamp(12px,1.6vw,22px)}
}

/* ---------- dock (phone / tablet) ---------- */
.dock{
  position:fixed;left:50%;bottom:calc(var(--sa-b) + 10px);z-index:130;
  width:min(100% - 24px,420px);height:var(--dock);translate:-50% calc(100% + 30px + var(--sa-b));pointer-events:none;
  display:flex;align-items:center;gap:4px;padding:6px 6px 6px 14px;border-radius:999px;
  background:rgba(14,14,16,.92);border:1px solid rgba(255,255,255,.14);color:var(--white);
  box-shadow:0 18px 40px -18px rgba(0,0,0,.6);
  transition:translate .6s var(--ease),width .5s var(--ease);overflow:hidden;
}
@supports ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .dock{background:rgba(14,14,16,.86);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%)}
}
@media (prefers-reduced-transparency:reduce),(prefers-contrast:more){
  .dock{background:#0c0c0e;backdrop-filter:none;-webkit-backdrop-filter:none;border-width:2px}
}
.dock.is-shown{translate:-50% 0;pointer-events:auto}
@media (max-width:1023.98px){.no-js .dock{translate:-50% 0;pointer-events:auto}}
.dock:has(:focus-visible){translate:-50% 0;pointer-events:auto}
.motion-off .dock{transition:none}
.dock-status{display:flex;align-items:center;gap:7px;font-family:var(--mono);font-size:var(--micro);letter-spacing:.08em;text-transform:uppercase;color:var(--white);min-width:62px;flex:none}
.dock-tabs{list-style:none;margin:auto 0;padding:0;display:flex;gap:2px;position:absolute;right:6px;inset-block:0;height:48px;z-index:1;transition:opacity .22s var(--ease) .08s,translate .45s var(--ease)}
.dock-tabs a,.dock-tabs button{position:relative;display:grid;place-items:center;min-width:56px;min-height:48px;padding:0 10px;border-radius:999px;font-size:13px;font-weight:500;letter-spacing:.04em;color:var(--white)}
.dock-tabs a[aria-current]{font-weight:700}
.dock-ind{position:absolute;top:6px;left:0;z-index:-1;height:36px;width:var(--w,56px);border-radius:999px;background:rgba(255,255,255,.14);transform:translateX(var(--x,0));transition:transform .5s var(--ease),width .5s var(--ease),opacity .3s;opacity:0}
.dock-ind.on{opacity:1}
.dock-ind::after{content:"";position:absolute;left:50%;bottom:5px;width:14px;height:2px;margin-left:-7px;border-radius:1px;background:var(--white)}
.motion-off .dock-ind{transition:none}
.dock-now{display:block;position:absolute;right:14px;inset-block:0;margin:auto 0;height:48px;max-width:calc(100% - 96px);padding:0 14px;font-family:var(--mono);font-size:var(--micro);letter-spacing:.08em;text-transform:uppercase;color:var(--white);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;opacity:0;translate:0 8px;pointer-events:none;transition:opacity .2s var(--ease),translate .45s var(--ease)}
.dock::before{content:"";position:absolute;left:18px;right:18px;bottom:4px;height:1px;background:rgba(255,255,255,.14);pointer-events:none}
.dock-progress{position:absolute;left:18px;right:18px;bottom:4px;height:1px;background:rgba(255,255,255,.9);transform-origin:left;transform:scaleX(var(--p,0));opacity:.9}
.dock.is-compact{width:min(76%,280px)}
.dock.is-compact .dock-status b{display:none}
.dock.is-compact .dock-status{min-width:18px}
.dock.is-compact .dock-now{max-width:calc(100% - 44px)}
.dock.is-compact .dock-tabs{opacity:0;translate:0 -8px;pointer-events:none;transition:opacity .18s var(--ease),translate .45s var(--ease)}
.dock.is-compact .dock-ind{opacity:0}
.dock.is-compact .dock-now{opacity:1;translate:0 0;pointer-events:auto;transition-delay:.16s}
.dock.is-compact:has(:focus-visible){width:min(100% - 24px,420px)}
.dock.is-compact:has(:focus-visible) .dock-tabs{opacity:1;translate:0 0;pointer-events:auto}
.dock.is-compact:has(:focus-visible) .dock-now{opacity:0;translate:0 8px;pointer-events:none;transition-delay:0s}
.dock.is-compact:has(:focus-visible) .dock-ind.on{opacity:1}
@supports not selector(:has(a)){ .dock:focus-within{translate:-50% 0;pointer-events:auto} .dock.is-compact:focus-within{width:min(100% - 24px,420px)} .dock.is-compact:focus-within .dock-tabs{opacity:1;pointer-events:auto} .dock.is-compact:focus-within .dock-now{opacity:0} }
.motion-off .dock-tabs,.motion-off .dock-now{transition:none}
@media (max-width:359px){ .dock-status b{display:none} .dock-status{min-width:18px} .dock-tabs a,.dock-tabs button{min-width:46px;padding:0 6px} }
@media (min-width:1024px){ .dock{display:none} }

/* ---------- bottom sheet ---------- */
.sheet{
  position:fixed;inset:auto 0 0 0;margin:0 auto;width:100%;max-width:640px;
  max-height:min(86svh,760px);border:0;padding:0;border-radius:26px 26px 0 0;
  background:#111214;color:var(--white);overflow:hidden;display:none;
  translate:0 0;transition:translate .38s var(--ease);
  box-shadow:0 -20px 60px -20px rgba(0,0,0,.7);
}
.sheet[open]{display:flex;flex-direction:column}
@starting-style{.sheet[open]{translate:0 calc(100% + 40px)} .sheet[open]::backdrop{opacity:0}}
.sheet.is-closing{translate:0 calc(100% + 40px)}
.sheet::backdrop{background:rgba(0,0,0,.55);transition:opacity .32s var(--ease)}
.sheet.is-closing::backdrop{opacity:0}
.motion-off .sheet::backdrop{transition:none}
.motion-off .sheet{transition:none}
.sheet-head{touch-action:pinch-zoom;padding:10px 22px 8px;cursor:grab}
.sheet-grip{display:block;width:40px;height:4px;border-radius:2px;background:rgba(255,255,255,.3);margin:0 auto 14px}
.sheet-head h2{margin:0;font-size:1.05rem;font-weight:700;letter-spacing:.06em}
.sheet-kicker{margin:0 0 6px;color:var(--d-text-3)}
.sheet-now{margin:4px 0 0;color:var(--d-text-3)}
.sheet-body{overflow:auto;overscroll-behavior:contain;padding:6px 22px 18px;-webkit-overflow-scrolling:touch}
.sheet-foot{padding:12px 22px calc(16px + var(--sa-b));border-top:1px solid var(--d-line)}
.sheet-close{min-height:50px;width:100%;border-radius:999px;border:1px solid rgba(255,255,255,.22);font-weight:500;letter-spacing:.08em}
.toc-list{list-style:none;margin:0;padding:0}
.toc-list>li>a{display:flex;justify-content:space-between;align-items:baseline;min-height:56px;padding:12px 0;border-bottom:1px solid var(--d-line);font-size:clamp(1.25rem,6vw,1.6rem);font-weight:500;letter-spacing:.04em}
.toc-list small{color:var(--d-text-3)}
.toc-list a[aria-current]>span::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:#d9dce1;margin-right:10px;vertical-align:middle}
.toc-sub a{position:relative}
.toc-sub a[aria-current]::before{content:"";position:absolute;left:-14px;top:50%;width:7px;height:7px;margin-top:-3.5px;border-radius:50%;background:#d9dce1}
.toc-sub{list-style:none;margin:0;padding:4px 0 8px 18px;border-bottom:1px solid var(--d-line)}
.toc-sub a{display:flex;justify-content:space-between;align-items:center;min-height:44px;font-size:1rem;color:#d6d8dc}
.toc-sub .toc-sub{border-bottom:0;padding:0 0 4px 14px}
.toc-items a{font-size:.95rem}
.sheet-setting{margin-top:22px;padding:16px;border-radius:18px;background:rgba(255,255,255,.05)}
.sheet-setting .motion-switch{display:flex;width:100%;justify-content:space-between;align-items:center;min-height:48px;font-weight:500}
.sheet-setting .motion-switch small{display:flex;align-items:center;gap:10px;color:var(--d-mute)}
.sheet-setting .motion-switch small::after{content:"";width:40px;height:22px;border-radius:999px;border:1px solid currentColor;background:radial-gradient(circle,currentColor 0 6px,transparent 6.5px) 2px 50%/18px 18px no-repeat;transition:background-position .3s var(--ease)}
.sheet-setting .motion-switch[aria-checked="true"] small::after{background-position:calc(100% - 2px) 50%;background-color:rgba(255,255,255,.15)}
.sheet-setting p{margin:6px 0 0;font-size:.85rem;color:var(--d-mute);line-height:1.7}
.sheet-link{margin:18px 0 0}
.sheet-link a{display:inline-flex;min-height:44px;align-items:center;text-decoration:underline;text-underline-offset:4px}
.sheet--term .sheet-head h2{font-size:clamp(1.6rem,7.5vw,2.1rem);line-height:1.35;letter-spacing:.02em;margin-top:2px}
.sheet--term .term-text{margin:0;font-size:var(--fs-l);line-height:1.9}
.sheet--term .term-more{display:inline-flex;align-items:center;min-height:44px;margin-top:14px;color:var(--d-mute);text-decoration:underline;text-underline-offset:4px}
@media (min-width:1024px){ .sheet{border-radius:24px;bottom:24px;max-height:min(80vh,760px,calc(100svh - 48px))} .sheet.is-closing{translate:0 calc(100% + 72px)} @starting-style{.sheet[open]{translate:0 calc(100% + 72px)}} }

/* ---------- hero ---------- */
.hero{
  position:relative;isolation:isolate;overflow:hidden;background:var(--black);
  min-height:100vh;min-height:100svh;display:grid;grid-template-rows:1fr auto;
  padding:calc(var(--sa-t) + var(--header)) 0 calc(24px + var(--sa-b));
}
.hero-canvas{position:absolute;left:0;top:0;width:100%;height:var(--canvas-h,62%);z-index:-1}
.hero-veil{position:absolute;left:0;right:0;top:calc(var(--canvas-h,62%) * .7);height:calc(var(--canvas-h,62%) * .3 + 2px);z-index:-1;background:linear-gradient(to bottom,rgba(6,6,7,0),#060607);pointer-events:none}
.hero-fallback{
  position:absolute;z-index:-2;left:var(--orb-x,50%);top:var(--orb-y,30%);width:var(--orb-d,64vw);aspect-ratio:1;translate:-50% -50%;border-radius:50%;
  background:radial-gradient(circle at 34% 28%,#fff 0%,#c9ccd2 14%,#5c6069 42%,#15161a 70%,#060607 100%);box-shadow:0 0 120px rgba(255,255,255,.08);
}
.core-hit{position:absolute;z-index:0;left:var(--orb-x,50%);top:var(--orb-y,30%);width:calc(var(--orb-d,64vw) * 1.2);aspect-ratio:1;translate:-50% -50%;border-radius:50%;touch-action:manipulation;-webkit-touch-callout:none;user-select:none;-webkit-user-select:none}
.hero-inner{position:relative;align-self:end;padding:0 var(--pad);pointer-events:none}
.hero-kicker{margin:0 0 14px;color:#cfd1d5}
.hero-title{margin:0;font-weight:inherit}
.h-en{display:block;font-family:var(--display);color:#fff;mix-blend-mode:difference;margin-left:-.04em}
.hrow{display:contents}
.hl{display:block;white-space:nowrap;line-height:.86;letter-spacing:-.045em;font-size:var(--fs);font-weight:var(--w,250);transform:skewX(calc(var(--a,0) * -5deg));transform-origin:0 100%;padding-right:.08em}
.h-en b.hl{font-weight:var(--w,250)}
.h-ja{margin:18px 0 0;font-size:clamp(1rem,4.6vw,1.35rem);font-weight:500;letter-spacing:.12em;line-height:1.6;color:#fff}
.hero-meta{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:12px 16px;align-items:end;margin:22px var(--pad) 0;padding-top:16px;border-top:1px solid var(--d-line)}
.hero-meta p{margin:0}
.lede{font-size:var(--fs-s);line-height:1.8;letter-spacing:.06em;color:var(--white)}
.hero-ctrl{display:flex;align-items:center;gap:12px;grid-row:span 2}
.hero-status{display:flex;align-items:center;gap:8px;color:var(--d-mute);white-space:nowrap}
@media (max-width:1023.98px){
  .hero-ctrl{position:relative}
  .hero-status{position:absolute;right:0;bottom:calc(100% + 10px);pointer-events:none}
}
@media (max-width:359.98px){ .hero-status [data-boot]{display:none} }
@media (min-width:1024px){ .hero-status [data-boot]{display:inline-block;min-width:12ch} }
.wake{position:relative;width:56px;height:56px;border-radius:50%;display:grid;place-items:center;font-family:var(--mono);font-size:var(--micro);letter-spacing:.1em;text-transform:uppercase;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.2)}
.wake-ring{position:absolute;inset:4px;width:calc(100% - 8px);height:calc(100% - 8px);transform:rotate(-90deg)}
.wake-ring circle{fill:none;stroke:#fff;stroke-width:1.5;stroke-dasharray:126;stroke-dashoffset:126;transition:stroke-dashoffset .3s}
.wake.is-charging .wake-ring circle{stroke-dashoffset:0;transition:stroke-dashoffset .45s linear}
.wake.is-on{background:#fff;color:#000}
.wake:focus-visible{outline-color:#f7f7f8;box-shadow:0 0 0 4px #060607}
.hint{color:var(--d-text-3)}
.clock{display:none}
/* hero intro */
.js .hero-kicker,.js .h-en,.js .h-ja,.js .hero-meta{opacity:0;translate:0 14px;transition:opacity 1s .1s,translate 1.2s .1s var(--ease)}
.is-loaded .hero-kicker,.is-loaded .h-en,.is-loaded .h-ja,.is-loaded .hero-meta{opacity:1;translate:0 0}
.js .hero-canvas{opacity:0;transition:opacity .8s}
.gl-in .hero-canvas{opacity:1}
.hero-fallback{transition:opacity .4s .8s}
.gl-in .hero-fallback{opacity:0}
.motion-off .hero-kicker,.motion-off .h-en,.motion-off .h-ja,.motion-off .hero-meta{opacity:1!important;translate:none!important;transition:none!important}
.js:not(.hf) .h-en{opacity:0}
@media (max-width:1023.98px){ .js .h-en{transition:opacity .6s,translate .9s var(--ease)} }
.hf-fb .h-en{font-family:"Helvetica Neue",Arial,sans-serif}
.motion-off:not(.hf) .h-en{opacity:0!important}
@keyframes heroShow{to{opacity:1;translate:0 0}}
.js:not(.is-loaded) .hero-kicker,.js:not(.is-loaded) .h-ja,.js:not(.is-loaded) .hero-meta{animation:heroShow .8s 1.2s var(--ease) forwards}
@media (min-width:1024px){ .js:not(.motion-off):not(.is-loaded) .hero-kicker,.js:not(.motion-off):not(.is-loaded) .h-ja,.js:not(.motion-off):not(.is-loaded) .hero-meta{animation-delay:5s} }
.motion-off .hero-canvas,.motion-off .hero-fallback{transition:none!important}
@media (orientation:landscape) and (max-height:500px){
  .hrow{display:block}
  .hl{display:inline-block;font-size:clamp(2.6rem,9vw,4rem)!important}
  .hero-canvas{height:100%}
  .hero-veil{display:none}
}
@media (min-width:1024px){
  .hero{grid-template-rows:1fr auto;padding:calc(var(--header) + 40px) 0 0}
  .hero-canvas{height:100%}
  .hero-veil{display:none}
  .core-hit{display:none}
  .hero-inner{align-self:end}
  .hero-kicker{margin-bottom:clamp(18px,3vh,36px)}
  .hrow{display:block}
  .hl{display:inline-block;font-size:clamp(3.3rem,10.4vw,12rem)!important;line-height:.9;letter-spacing:-.055em}
  .h-ja{margin-top:clamp(20px,3.4vh,40px);font-size:clamp(1.05rem,1.8vw,1.5rem)}
  .hero-meta{grid-template-columns:1.4fr auto 1fr 1fr;gap:24px;margin-top:clamp(28px,6vh,64px);padding:20px 0 48px}
  .hero-ctrl{grid-row:auto}
  .clock{display:block;color:var(--d-mute)}
  .motion-off .clock{visibility:hidden}
}

/* ---------- marquee ---------- */
.marquee{overflow:hidden;border-block:1px solid var(--d-line);padding:14px 0;background:var(--black)}
.marquee-track{display:flex;width:max-content;will-change:transform}
.marquee-track span{font-family:var(--display);font-weight:300;font-size:clamp(2.2rem,12vw,3.4rem);line-height:1;letter-spacing:-.04em;padding-right:.5em;white-space:nowrap}
.marquee-track span::after{content:"—";padding-left:.5em;color:var(--d-mute-2)}
.marquee-track .o{color:var(--black);-webkit-text-stroke:2.2px rgba(255,255,255,.55);paint-order:stroke fill}
.marquee-track .o::after{-webkit-text-stroke:0;color:var(--d-mute-2)}
@media (min-width:1024px){ .marquee{padding:22px 0} .marquee-track span{font-size:clamp(3rem,8vw,7rem)} }

/* ---------- section basics ---------- */
.sec{position:relative;padding:clamp(80px,14vh,180px) 0}
.eyebrow{display:flex;align-items:center;gap:12px;margin:0 0 24px;color:var(--d-text-3)}
.eyebrow::before{content:"";width:24px;height:1px;background:currentColor;opacity:.6}
.light .eyebrow{color:var(--l-mute)}
.sec-title{margin:0;font-size:clamp(1.85rem,8.2vw,4.6rem);line-height:1.22;font-weight:700;letter-spacing:.01em}
.sec-head{display:grid;gap:22px;margin-bottom:clamp(40px,7vh,96px)}
.note{margin:0;max-width:32em;color:var(--d-mute);font-size:.95rem}
.light{background:var(--paper);color:var(--ink)}
.light .note{color:var(--l-mute)}
@media (min-width:1024px){
  .sec-head{grid-template-columns:1fr 1fr;align-items:end;gap:40px}
  .sec-head .note{justify-self:end}
}

/* ---------- contents ---------- */
.contents{padding:64px 0 24px;background:var(--black)}
.contents .eyebrow{font-size:max(12px,.75rem);font-weight:400}
.contents-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--d-line)}
.contents-list a{display:grid;grid-template-columns:2.6em 1fr;grid-template-rows:auto auto;column-gap:10px;align-items:baseline;padding:14px 0;border-bottom:1px solid var(--d-line);min-height:56px}
.contents-list small{grid-row:span 2;color:var(--d-text-3)}
.contents-list b{font-size:1.2rem;font-weight:500;letter-spacing:.06em}
.contents-list span{font-size:.85rem;color:var(--d-mute)}
@media (hover:hover){ .contents-list a{transition:padding .5s var(--ease)} .contents-list a:hover{padding-left:10px} }
@media (min-width:768px){
  .contents-list{display:grid;grid-template-columns:1fr 1fr;column-gap:40px;border-top:0}
  .contents-list li{border-top:1px solid var(--d-line)}
  .contents-list a{border-bottom:0}
}

/* ---------- 01 concept ---------- */
.concept{position:relative;background:var(--black);padding-top:clamp(72px,12vh,160px)}
.concept .sec-title{font-size:clamp(1.4rem,5.4vw,2.2rem);margin-bottom:36px}
.dict{margin:0 0 24px;padding:22px 0;border-block:1px solid var(--d-line)}
.dict dt{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px}
.dict-word{font-family:var(--display);font-weight:200;font-size:clamp(4.6rem,26vw,10rem);line-height:.9;letter-spacing:-.05em}
.dict-read{color:var(--d-mute);font-size:.95rem}
.dict-tag{border:1px solid var(--d-line);border-radius:999px;padding:2px 10px;color:var(--d-mute)}
.dict dd{margin:16px 0 0;font-size:1.05rem;color:#dedfe2}
.beats{display:grid}
.beat{min-width:0;min-height:56svh;display:grid;grid-template-columns:minmax(0,1fr);align-content:center;margin:0;font-size:clamp(1.55rem,7.2vw,3rem);font-weight:300;line-height:1.6;letter-spacing:.04em;opacity:.42;transition:opacity 1s var(--ease),font-weight 1.2s var(--ease)}
.beat .nw{min-width:0;max-width:100%;overflow-wrap:anywhere}
.beat.in,.no-js .beat,.motion-off .beat{opacity:1;font-weight:600}
.motion-off .beat{transition:none}
.beat:first-child{min-height:auto;align-content:start;padding:clamp(48px,9svh,88px) 0 18svh}
.beat em{font-style:normal;font-family:var(--display);font-weight:500;letter-spacing:-.01em}
.formula-wrap{position:relative;height:170svh}
.formula-pin{position:sticky;top:0;height:100svh;display:grid;place-content:center;overflow:hidden;--p:0}
.formula{--m:clamp(0, (var(--p) - .35) / .2, 1);display:grid;justify-items:center;gap:clamp(36px,8vw,56px);font-family:var(--display)}
.f-row{display:flex;align-items:baseline;gap:calc(clamp(12px,4vw,36px) * (1 - var(--m)));opacity:calc(1 - clamp(0, (var(--p) - .5) / .3, 1) * .6)}
.f-term{position:relative;display:flex;flex-direction:column;align-items:center;gap:8px;font-weight:300;font-size:clamp(2.6rem,13vw,6rem);line-height:1;letter-spacing:-.04em}
.f-term small{position:absolute;top:100%;left:50%;translate:-50% 8px;white-space:nowrap;color:var(--d-text-3);letter-spacing:.14em;opacity:calc(1 - clamp(0, (var(--p) - .35) / .12, 1))}
.f-op{font-weight:200;font-size:clamp(2rem,9vw,4rem);line-height:1.3;color:var(--d-text-3);max-width:calc(1em * (1 - var(--m)));overflow:hidden;opacity:calc(1 - clamp(0, (var(--p) - .35) / .1, 1))}
.f-a{transform:translateX(calc((1 - min(1, var(--p) / .35)) * -30vw))}
.f-idle{transform:translateX(calc((1 - min(1, var(--p) / .35)) * 30vw))}
.f-result{display:flex;align-items:baseline;gap:.28em;font-size:clamp(3rem,15vw,8rem);line-height:1;letter-spacing:-.05em;opacity:clamp(0, (var(--p) - .42) / .2, 1)}
.f-aidle{padding-right:.04em;margin-right:-.04em;font-weight:600;background:var(--silver);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:sheen 7s ease-in-out infinite}
.f-core{font-weight:200;display:inline-block;opacity:clamp(0, (var(--p) - .72) / .2, 1);transform:translateY(calc((1 - clamp(0, (var(--p) - .72) / .25, 1)) * 40px))}
@media screen{
  .js:not(.motion-off) .formula{grid-template-areas:"f";gap:0;--k:clamp(0, (var(--p) - .72) / .2, 1)}
  .js:not(.motion-off) .f-row,.js:not(.motion-off) .f-result{grid-area:f}
  .js:not(.motion-off) .f-term{font-size:clamp(3rem,17vw,8rem);font-weight:calc(300 + 300 * var(--m));letter-spacing:calc(-.04em - .01em * var(--m))}
  .js:not(.motion-off) .f-result{font-size:clamp(3rem,17vw,8rem);gap:calc(.28em * var(--k));opacity:clamp(0, (var(--p) - .55) / .08, 1)}
  .js:not(.motion-off) .f-row{opacity:calc(1 - clamp(0, (var(--p) - .55) / .08, 1))}
  .js:not(.motion-off) .f-core{min-width:0;white-space:nowrap;max-width:calc(2.6em * var(--k))}
}
@keyframes sheen{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.concept-close{margin:0;padding:24px 0 clamp(90px,14vh,180px);font-size:clamp(1.3rem,5.6vw,2.4rem);font-weight:600;line-height:1.7}
.motion-off .formula,.no-js .formula{--m:0}
.motion-off .formula-wrap,.no-js .formula-wrap{height:auto}
.motion-off .formula-pin,.no-js .formula-pin{position:relative;height:auto;padding:80px 0;--p:1}
.motion-off .f-row,.no-js .f-row,.motion-off .f-op,.no-js .f-op,.motion-off .f-term small,.no-js .f-term small{opacity:1}
.motion-off .f-aidle{animation:none}
@media (min-width:1024px){
  .formula-wrap{height:200vh}
  .beats{max-width:1100px}
}

/* ---------- 02 principles ---------- */
.principles-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.principles-list li{
  position:sticky;top:calc(var(--sa-t) + var(--header) + var(--i) * 14px);
  min-height:56svh;background:var(--paper);border-radius:22px;border:1px solid var(--l-line);
  padding:24px 22px 28px;box-shadow:0 -12px 30px -24px rgba(0,0,0,.35);
}
.p-key{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:clamp(36px,10vh,80px);color:var(--l-mute)}
.p-word{display:block;font-family:var(--display);font-weight:300;font-size:clamp(3.4rem,17vw,7rem);line-height:.9;letter-spacing:-.05em;color:var(--ink);margin-bottom:22px}
.principles-list h3{margin:0 0 10px;font-size:clamp(1.2rem,5vw,1.45rem);line-height:1.5}
.principles-list p{margin:0;color:var(--l-mute)}
.p-icon{position:absolute;right:22px;top:66px;width:40px;height:40px;color:var(--ink)}
.p-icon *{fill:none;stroke:currentColor;stroke-width:1.2}
.p-icon .fill{fill:currentColor}
.motion-off .principles-list li{position:relative;top:auto}
@media (max-height:600px){ .principles-list li{position:relative;top:auto;min-height:0} }
@media (max-width:1023.98px){
  .principles-list li{background:var(--white);box-shadow:0 -18px 40px -28px rgba(0,0,0,.45)}
  .principles-list li:nth-child(2){background:var(--paper-2)}
  .principles-list li:nth-child(3){background:var(--ink);color:var(--white);border-color:var(--d-line)}
  .principles-list li:nth-child(3) .p-key,.principles-list li:nth-child(3) p{color:var(--d-mute)}
  .principles-list li:nth-child(3) .p-word,.principles-list li:nth-child(3) .p-icon,.principles-list li:nth-child(3) h3{color:var(--white)}
}
@media (min-width:1024px){
  .principles-list{grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--l-line)}
  .principles-list li{position:relative;top:auto;min-height:0;border:0;border-radius:0;background:none;box-shadow:none;padding:36px clamp(16px,2.4vw,40px) 44px 0}
  .principles-list li+li{padding-left:clamp(16px,2.4vw,40px);border-left:1px solid var(--l-line)}
  .p-icon{width:56px;height:56px;top:84px;right:clamp(16px,2.4vw,40px)}
}

@media screen and (min-width:1024px){
  .js:not(.motion-off) .f-term,.js:not(.motion-off) .f-result{font-size:clamp(8rem,13.5vw,15rem)}
  .js:not(.motion-off) .f-op{font-size:clamp(4rem,5.5vw,7.5rem)}
  .js:not(.motion-off) .f-row{gap:calc(clamp(36px,3.4vw,64px) * (1 - var(--m)))}
}

/* ---------- deck (horizontal swipe) ---------- */
.deck{position:relative}
.deck-track{
  position:relative;display:grid;grid-auto-flow:column;grid-auto-columns:86%;gap:12px;overflow-x:auto;overscroll-behavior-x:contain;
  scroll-snap-type:x mandatory;scroll-padding-inline:var(--pad);padding:4px var(--pad) 10px;scrollbar-width:none;list-style:none;margin:0;
}
.deck-track::-webkit-scrollbar{display:none}
.deck-card{scroll-snap-align:start;scroll-snap-stop:always;border-radius:24px;transition:scale .5s var(--ease)}
.js .deck-card:not(.is-current){scale:.96}
.js .deck-card:not(.is-current) .card-art{opacity:.45}
.js .deck--process .deck-card:not(.is-current) .pcard-title{opacity:.6}
.card-art{transition:opacity .5s}
.motion-off .deck-card{transition:none}
.deck-ctrl{display:flex;align-items:center;justify-content:flex-end;gap:8px;padding:0 var(--pad) 12px}
.deck-ctrl button{min-width:48px;min-height:48px;border-radius:50%;border:1px solid var(--d-line);font-size:1.1rem}
.deck-ctrl button[aria-disabled="true"]{opacity:.3;cursor:default}
.deck-count{color:var(--d-mute);margin-right:auto}
.no-js .deck-ctrl{display:none}
@media (min-width:768px){ .deck-track{grid-auto-columns:62%} }

/* ---------- 03 business ---------- */
.business{background:var(--black);padding-bottom:clamp(60px,10vh,140px)}
.card{display:grid;grid-template-rows:auto 1fr auto;min-height:min(74svh,640px);padding:22px 20px 20px;overflow:hidden}
.card-core{background:var(--paper);color:var(--ink)}
.card-aidle{background:#0f1012;color:var(--white);box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
.card-top{margin:0;padding-bottom:14px;border-bottom:1px solid var(--l-line);color:var(--l-mute)}
.card-aidle .card-top{border-color:var(--d-line);color:var(--d-mute)}
.card-mid{display:grid;gap:14px;align-content:start;padding:16px 0}
.card-main{display:grid;gap:14px}
.card-name{margin:0;font-family:var(--display);font-weight:300;font-size:clamp(3.6rem,19vw,7rem);line-height:.86;letter-spacing:-.06em;margin-left:-.04em}
.card-aidle .card-name{background:var(--silver);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:sheen 9s ease-in-out infinite}
.motion-off .card-aidle .card-name{animation:none}
.card-copy h4{margin:0 0 8px;font-size:clamp(1.05rem,4.6vw,1.6rem);line-height:1.5}
.card-copy p{margin:0;font-size:var(--fs-s);line-height:1.85;color:var(--l-mute)}
.card-aidle .card-copy p{color:var(--d-mute)}
.card-art{width:100%;max-width:260px;justify-self:center;aspect-ratio:1.18;order:-1;margin-top:4px}
.card-art svg{width:100%;height:100%;overflow:visible}
.net-legend{display:block;margin:6px 0 0;text-align:center;color:var(--d-text-3);font-family:var(--ja);font-size:max(12px,.75rem);letter-spacing:.08em}
.net-legend .mono{font-size:inherit}
.card-bottom{display:grid;gap:12px}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--l-line)}
.card-aidle .steps{border-color:var(--d-line)}
.steps a{display:flex;flex-direction:column;gap:2px;padding:10px 6px 4px 0;min-height:48px}
.steps li+li a{padding-left:10px;border-left:1px solid var(--l-line)}
.card-aidle .steps li+li a{border-color:var(--d-line)}
.steps .mono{color:var(--l-mute)}
.card-aidle .steps .mono{color:var(--d-text-3)}
.steps b{font-size:.95rem;font-weight:600}
.card-more{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-size:var(--fs-s);font-weight:500}
.card-more .u,.pcard-link .u{text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
@media (hover:hover){ .card-more>[aria-hidden],.pcard-link>[aria-hidden]{transition:translate .4s var(--ease)} .card-more:hover>[aria-hidden],.pcard-link:hover>[aria-hidden]{translate:4px 0} }
.motion-off .card-more>[aria-hidden],.motion-off .pcard-link>[aria-hidden]{transition:none;translate:none}
@media (max-width:1023.98px){
  .card-mid{grid-template-columns:minmax(0,1fr) 40%;grid-template-areas:"name art" "copy copy";column-gap:10px;align-items:end}
  .card-main{display:contents}
  .card-name{grid-area:name}
  .card-copy{grid-area:copy}
  .card-art{grid-area:art;order:0;position:relative;width:100%;max-width:none;aspect-ratio:auto;margin:0;align-self:center}
  .card-art svg{display:block;width:100%;height:auto}
  .card-core .plate text{display:none}
  .net-legend{position:absolute;right:0;bottom:-2px;margin:0;line-height:1.4;white-space:nowrap}
  .net-legend .mono{display:none}
}
@media (min-width:768px) and (max-width:1023.98px){ .deck--business .deck-track{grid-auto-columns:74%} }
@media (max-width:767px){
  .card{min-height:0;padding:16px 18px 12px}
  .card-top{padding-bottom:10px}
  .card-mid{padding:12px 0 8px;gap:10px}
  .card-main{gap:10px}
  .card-mid{grid-template-columns:minmax(0,1fr) 42%;grid-template-areas:"name art" "copy copy";column-gap:10px;align-items:end}
  .card-main{display:contents}
  .card-name{grid-area:name}
  .card-copy{grid-area:copy}
  .card-art{grid-area:art;order:0;position:relative;width:100%;max-width:none;aspect-ratio:auto;margin:0;align-self:center}
  .card-art svg{display:block;width:100%;height:auto}
  .card-core .plate text{display:none}
  .net-legend{position:absolute;right:0;bottom:-2px;margin:0;line-height:1.4;white-space:nowrap}
  .net-legend .mono{display:none}
  .card-aidle .steps{grid-template-columns:repeat(3,auto)}
  .card-name{font-size:clamp(3rem,15vw,3.75rem)}
  .card-copy h4{margin-bottom:6px}
  .card-copy p{font-size:var(--fs-s);line-height:1.75}
  .card-bottom{gap:0}
  .steps a{padding-top:8px;min-height:44px}
  .card-art :is(path,line,circle):not(.net-pulse){vector-effect:non-scaling-stroke}
  .card-art .plate path{stroke-width:1.2}
  .card-art .plate-link{stroke-dasharray:2 3}
  .card-art .net-line{stroke:rgba(255,255,255,.36)}
  .card-art .net-node{stroke:rgba(255,255,255,.75)}
  .card-art .net-pulse{stroke-width:4.5}
}
@media (max-width:767px) and (max-height:700px){ .card-copy p{line-height:1.7} }
/* core art: layers */
.plate{transition:transform 1s var(--ease)}
.plate path{fill:var(--paper);stroke:var(--ink);stroke-width:1.2}
.plate text{font-family:var(--mono);font-size:18px;letter-spacing:.12em;fill:var(--ink)}
.plate-link{stroke:var(--ink);stroke-width:1;stroke-dasharray:2 4;opacity:.5}
.card-core.is-current .p1,.card-core.in .p1{transform:translateY(-14px)}
.card-core.is-current .p3,.card-core.in .p3{transform:translateY(14px)}
/* process art: plates light up with the deck */
.process-art{padding:0}
.deck--process .deck-ctrl .process-art{flex:none;width:clamp(120px,36vw,150px);margin:0 auto 0 0}
.deck--process .deck-ctrl .deck-count{margin-right:0}
.deck--process .process-art .plate text,.deck--process .process-art .plate-link{display:none}
.deck--process .process-art .plate path{vector-effect:non-scaling-stroke;stroke-width:1px}
.process-art svg{width:100%;overflow:visible}
.process-art .plate path{fill:#0f1012;stroke:rgba(255,255,255,.4);transition:fill .5s var(--ease),stroke .5s}
.process-art .plate text{fill:var(--d-text-3);transition:fill .5s}
.process-art .plate-link{stroke:rgba(255,255,255,.35)}
.process-art[data-phase="1"] .p1 path,.process-art[data-phase="2"] .p2 path,.process-art[data-phase="3"] .p3 path{fill:#e9eaec;stroke:#fff}
.process-art[data-phase="1"] .p1 text,.process-art[data-phase="2"] .p2 text,.process-art[data-phase="3"] .p3 text{fill:#060607}
.process-art[data-phase="1"] .p1,.process-art[data-phase="2"] .p1,.process-art[data-phase="3"] .p1,.process-art[data-phase="3"] .p2{transform:translateY(-16px)}
.motion-off .plate,.motion-off .process-art .plate path,.motion-off .process-art .plate text{transition:none}
/* aidle art: network */
.net-line{stroke:rgba(255,255,255,.24);stroke-width:1}
.net-pulse{stroke:#fff;stroke-width:1.4;stroke-dasharray:6 160;stroke-linecap:round;animation:pulse 3.6s linear infinite}
.net-node{fill:#0f1012;stroke:rgba(255,255,255,.6)}
.net-core{fill:#fff}
.net-label{display:none;font-family:var(--mono);font-size:12px;letter-spacing:.16em;fill:var(--d-mute)}
.net-ring{fill:none;stroke:rgba(255,255,255,.35);transform-origin:200px 170px;animation:ringOut 3.2s ease-out infinite}
.motion-off .net-pulse,.motion-off .net-ring{animation:none}
.motion-off .net-ring{opacity:0}
@keyframes pulse{from{stroke-dashoffset:166}to{stroke-dashoffset:0}}
@keyframes ringOut{from{transform:scale(.6);opacity:.8}to{transform:scale(2.2);opacity:0}}
@media (min-width:768px){
  .plate text{font-size:14px}
  .card{padding:28px 28px 24px}
}
@media (min-width:1024px){
  .deck--business .deck-track{grid-auto-flow:row;grid-auto-columns:auto;overflow:visible;scroll-snap-type:none;gap:clamp(20px,3vh,32px);padding:0 var(--pad)}
  .deck--business .deck-ctrl{display:none}
  .deck--business .deck-card,.deck--business .deck-card:not(.is-current){scale:1;transition:none}
  .deck--business .deck-card:not(.is-current) .card-art{opacity:1}
  .card{position:sticky;top:calc(var(--header) + 3vh);height:auto;min-height:min(860px, calc(100vh - var(--header) - 6vh - 24px));padding:clamp(24px,3.2vw,48px);border-radius:clamp(14px,1.6vw,24px);transform-origin:50% 0}
  .deck--business .card:has(:focus-visible){z-index:2;transform:none!important;filter:none!important}
  .js .card{will-change:transform,filter}
  .motion-off .card{will-change:auto}
  .plate text{font-size:13px}
  .process-art{display:none}
  .card+.card{top:calc(var(--header) + 3vh + 24px)}
  .motion-off .card{position:relative;top:auto;height:auto}
  .card-mid{grid-template-columns:1.15fr 1fr;align-items:center;gap:clamp(24px,4vw,72px);padding-block:clamp(20px,3vh,40px)}
  .card-main{gap:clamp(20px,3.6vh,44px)}
  .card-name{font-size:clamp(4.4rem,min(12vw,22vh),13rem);line-height:.8}
  .card-copy h4{font-size:clamp(1.3rem,2.2vw,2rem)}
  .card-copy p{font-size:var(--fs-m)}
  .card-art{order:0;max-width:min(520px,52vh)}
  .net-label{display:block}
  .net-legend .mono{display:none}
  .steps a{padding:18px 18px 4px 0}
  .steps li+li a{padding-left:18px}
  .steps b{font-size:1.05rem}
  .card-bottom{grid-template-columns:1fr auto;align-items:end;gap:24px}
}

/* ---------- 04 core chapter ---------- */
.core-chapter{background:var(--black)}
.chapter-door{position:relative;padding-top:clamp(90px,14vh,180px);padding-bottom:48px}
.numeral{position:relative;text-align:right;margin:0 0 .04em;font-family:var(--display);font-weight:200;font-size:clamp(6rem,34vw,20rem);line-height:.8;letter-spacing:-.06em;color:transparent;pointer-events:none;
  background:linear-gradient(to top,#d9dce1 50%,#1b1c20 50%) 0 0/100% 200%;-webkit-background-clip:text;background-clip:text;transition:background-position 1.4s var(--ease)}
.numeral.in{background-position:0 100%}
.light .numeral{background:none;-webkit-text-stroke:1px rgba(12,12,14,.22);transition:none}
.motion-off .numeral{background-position:0 100%;transition:none}
.chapter-door .sec-title{position:relative;font-size:clamp(1.75rem,7.6vw,4.2rem)}
.door-lead{position:relative;margin:28px 0 0;max-width:36em;font-size:var(--fs-m);color:#dcdde0}
.door-note{margin:18px 0 0;max-width:40em;font-size:var(--fs-s);line-height:1.85;color:var(--d-mute);padding-left:14px;border-left:1px solid var(--d-line)}
.deck--process{padding-bottom:56px}
.pcard{display:flex;flex-direction:column;gap:12px;padding:24px 22px 22px;background:#101113;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);min-height:340px}
.pcard-num{margin:0;color:var(--d-text-3)}
.pcard-title{margin:0;font-size:clamp(3rem,16vw,4.4rem);font-weight:300;line-height:1;letter-spacing:.02em}
.pcard-one{margin:0;font-size:var(--fs-l);font-weight:600;line-height:1.6}
.pcard-toc{margin:0;color:var(--d-mute);font-family:var(--ja);font-size:12.5px;letter-spacing:.06em;text-transform:none;line-height:1.9}
.pcard-out{margin:auto 0 0;font-size:var(--fs-s);color:var(--d-mute);line-height:1.8}
.pcard-out .mono{display:block;color:var(--d-text-3);margin-bottom:2px}
.pcard-link{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-weight:500}
@media (min-width:1024px){
  .deck--process .deck-track{grid-auto-flow:row;grid-template-columns:repeat(3,1fr);overflow:visible;scroll-snap-type:none}
  .deck--process .deck-ctrl{display:none}
  .deck--process .deck-card,.deck--process .deck-card:not(.is-current){scale:1}
  .deck--process .deck-card:not(.is-current) .pcard-title{opacity:1}
  .pcard{min-height:420px;padding:32px}
  .deck--process .deck-track{grid-template-rows:auto auto auto minmax(4.5rem,1fr) auto auto}
  .deck--process .pcard{display:grid;grid-row:span 6;grid-template-rows:subgrid;row-gap:12px}
  .deck--process .pcard-out{margin:0}
}

/* acts */
.act{position:relative;z-index:1;margin-top:-28px;border-radius:28px 28px 0 0;background:var(--paper);color:var(--ink);padding:0 0 72px}
.act--build{background:var(--paper-2)}
.act-head{
  position:sticky;top:var(--sa-t);z-index:5;height:var(--act-head);margin:0 0 0;padding:0 var(--pad);
  display:flex;justify-content:space-between;align-items:center;background:inherit;border-radius:28px 28px 0 0;
  border-bottom:1px solid var(--l-line);color:var(--l-mute);letter-spacing:.08em;transition:top .6s var(--ease)
}
.header-in .act-head{top:calc(var(--sa-t) + var(--header))}
.motion-off .act-head{transition:none}
.act-head.is-stuck{border-radius:0}
@media screen and (max-width:1023.98px) and (min-height:500.02px){
  .act-head::before{content:"";position:absolute;left:0;right:0;bottom:100%;height:calc(var(--sa-t) + var(--header));background:inherit;opacity:0;pointer-events:none;transition:opacity .25s}
  .act-head.is-stuck::before{opacity:1}
  .act-head>span{transition:opacity .35s var(--ease),translate .35s var(--ease)}
  .js .act:not(.title-past) .act-head>span{opacity:0;translate:0 6px}
  .motion-off .act-head>span{transition:none}
  .motion-off .act-head::before{transition:none}
}
.act-bar{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--ink);transform-origin:left;transform:scaleX(var(--p,0))}
@media (max-width:1023px){ .act :is(a[href],button,[tabindex]){scroll-margin-top:calc(var(--act-head) + 8px)} }
@media (max-height:500px){ .act-head{position:static} }
.act-grid{padding:0 var(--pad)}
.act-aside{position:relative;padding:40px 0 8px}
.act-num{position:absolute;right:0;top:20px;margin:0;font-family:var(--display);font-weight:200;font-size:clamp(5rem,28vw,9rem);line-height:.8;letter-spacing:-.06em;color:transparent;-webkit-text-stroke:1px rgba(12,12,14,.3);pointer-events:none}
.act-title{margin:0;display:flex;flex-direction:column;gap:clamp(10px,1.1vw + 6px,18px)}
@media (max-width:1023.98px){
  .act-title{position:relative;z-index:1}
  .act-num{top:2px;right:auto;left:calc(1.5 * var(--act-ja-size));font-size:clamp(7rem,40vw,12rem);-webkit-text-stroke:1px rgba(12,12,14,.22)}
}
.act-aside{--act-ja-size:clamp(5rem,30vw,12rem)}
.act-ja{font-family:var(--ja);font-weight:300;font-size:var(--act-ja-size);line-height:1;letter-spacing:.02em;transition:font-weight 1.1s var(--ease)}
html:not(.motion-off).is-active .act-ja.in-view{font-weight:800}
.motion-off .act-ja{font-weight:700;transition:none}
.act-en{color:var(--l-mute);padding-left:.4em}
.act-line{margin:20px 0 0;font-size:1.3rem;line-height:1.6}
.act-map a{color:inherit}
.act-map a span{letter-spacing:.08em}
@media (max-width:1023.98px){
  .act-map{display:grid;grid-template-columns:1fr 1fr;column-gap:16px;list-style:none;margin:28px 0 0;padding:0;border-top:1px solid var(--l-line)}
  .act-map a{display:grid;grid-template-columns:auto 1fr auto;align-items:center;column-gap:10px;min-height:44px;border-bottom:1px solid var(--l-line);color:var(--ink);letter-spacing:.04em}
  .act-map a span{color:var(--l-mute)}
  .act-map a::after{content:"↓";content:"↓" / "";color:var(--l-mute)}
}
.act-items{position:relative;padding:12px 0 0 36px}
@media (min-width:768px) and (max-width:1023.98px){ .act-items{max-width:calc(36em + 36px)} }
.act-items::before{content:"";position:absolute;left:12px;top:16px;bottom:0;width:1px;background:var(--l-line)}
.act-rail{position:absolute;left:12px;top:16px;bottom:0;width:1px;background:var(--ink);transform-origin:top;transform:scaleY(var(--p,0))}
.act-intro{margin:0 0 48px;font-size:var(--fs-m);line-height:1.95}
.item{position:relative;padding-bottom:56px;scroll-margin-top:calc(var(--act-head) + 8px)}
.item::before{content:"";position:absolute;left:-28px;top:8px;width:9px;height:9px;border-radius:50%;border:1px solid var(--ink);background:var(--paper)}
.act--build .item::before{background:var(--paper-2)}
.item.is-past::before,.item.is-current::before{background:var(--ink)}
.item.is-current::after{content:"";position:absolute;left:-28px;top:8px;width:9px;height:9px;border-radius:50%;background:rgba(12,12,14,.35);pointer-events:none;animation:itemRing 2.4s ease-out infinite}
.motion-off .item.is-current::after{display:none}
@keyframes itemRing{from{transform:scale(1);opacity:1}to{transform:scale(2.4);opacity:0}}
.item-meta{display:flex;align-items:center;gap:10px;margin:0 0 10px;color:var(--l-mute)}
.item-meta i{flex:1;height:1px;background:repeating-linear-gradient(90deg,currentColor 0 1px,transparent 1px 5px);opacity:.5}
.item-h{margin:0 0 10px;font-size:1.3rem;font-weight:700;line-height:1.5;letter-spacing:.04em}
.item-h small{display:block;margin-top:2px;font-size:13px;font-weight:500;color:var(--l-mute);letter-spacing:.08em}
.item-lead{margin:0 0 12px;font-size:var(--fs-l);font-weight:500;line-height:1.8}
.item-body{margin:0;font-size:var(--fs-m);line-height:1.95;color:#2c2e33}
.item-body+.item-body,.item-ref+.item-body,.item-body+.item-ref,.item-ref+.item-ref{margin-top:14px}
.act-sources{margin-top:8px}
.act-sources a,.aidle-sources a,.u-link,.g-used a{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.aidle-sources{font-size:var(--fs-s)}
.item-ref{margin:14px 0 0;padding-left:14px;border-left:2px solid var(--ink);font-size:var(--fs-s);line-height:1.85;color:#3a3c41}
@media (max-width:1023.98px){
  .item-ref{border-left:0;padding:12px 14px;border-radius:12px;background:rgba(12,12,14,.045);outline:1px solid transparent;outline-offset:-1px}
  .act--build .item-ref{background:rgba(12,12,14,.06)}
}
.tags{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.tags li{font:500 12px/1 var(--ja);letter-spacing:.06em;border:1px solid var(--l-line);border-radius:999px;padding:7px 11px;color:#34363b}
.term{text-decoration:underline dotted;text-underline-offset:4px;text-decoration-thickness:1.5px;padding-block:4px;margin-block:-4px;cursor:help}
.term:hover{text-decoration-style:solid}
@media (min-width:1024px){
  .act{margin-top:-36px;border-radius:36px 36px 0 0;padding-bottom:120px}
  .act-head{display:none}
  .act-grid{display:grid;grid-template-columns:minmax(280px,1fr) 2fr;gap:clamp(40px,6vw,96px);padding-top:80px}
  .act-aside{position:sticky;top:calc(var(--header) + 32px);align-self:start;padding:0}
  .act-num{position:static;font-size:clamp(5rem,9vw,9rem);margin-bottom:18px}
  .act-aside{--act-ja-size:clamp(5rem,9vw,9rem)}
  .act-map{display:block;list-style:none;margin:36px 0 0;padding:0;border-top:1px solid var(--l-line)}
  .act-map li{border-bottom:1px solid var(--l-line);color:var(--l-mute);transition:color .4s,padding .4s var(--ease)}
  .act-map a{display:block;padding:9px 0}
  @media (hover:hover){ .act-map a:hover{color:var(--ink)} }
  .act-map li.is-current{color:var(--ink);padding-left:10px}
  .act-items{padding:0;max-width:36em}
  .act-items::before,.act-rail,.item::before,.item::after{display:none}
  .item{padding-bottom:72px;scroll-margin-top:12px}
  .item-h{font-size:1.55rem}
}
@media (min-width:1024px) and (max-height:759.98px){ .act-aside{position:relative;top:auto} }
@media (max-width:1023.98px){ .act .aside-note{scroll-margin-top:calc(var(--act-head) + 8px)} }

/* interlude */
.interlude{min-height:72svh;background:var(--black);display:grid;place-items:center;padding:96px var(--pad) 120px;text-align:center}
.interlude p{margin:0;font-size:clamp(1.9rem,8.4vw,3.6rem);line-height:1.5}

/* cycle */
.cycle{margin:8px 0 40px;display:grid;justify-items:center;gap:14px}
.cycle svg{width:min(78vw,320px);overflow:visible}
.cycle-ring{fill:none;stroke:var(--ink);stroke-width:1.2;stroke-dasharray:704;stroke-dashoffset:704;transition:stroke-dashoffset 1.6s var(--ease)}
.cycle.in .cycle-ring,.motion-off .cycle-ring,.no-js .cycle-ring{stroke-dashoffset:0}
.cycle-dot{fill:var(--ink)}
.cycle-arrow{fill:none;stroke:var(--ink);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.cycle-runner{fill:var(--paper);stroke:var(--ink);stroke-width:1.5}
.cycle-run{transform-box:view-box;transform-origin:160px 160px;animation:cycleRun 14s linear infinite;animation-play-state:paused;opacity:0;transition:opacity .4s}
.is-active .cycle-run{animation-play-state:running;opacity:1}
.motion-off .cycle-run{animation:none;display:none}
@keyframes cycleRun{to{transform:rotate(360deg)}}
.cycle-label text{font-family:var(--ja);font-size:15px;font-weight:700;fill:var(--ink);letter-spacing:.08em}
.cycle figcaption{max-width:28em;text-align:center;font-size:var(--fs-s);color:var(--l-mute)}
.aside-note{padding:20px;border-radius:18px;background:rgba(12,12,14,.05);border:1px solid var(--l-line)}
.aside-note p{margin:0;font-size:var(--fs-s);line-height:1.9}
.aside-note .mono{margin-bottom:6px;color:var(--l-mute)}

/* chapter close */
.chapter-close{background:var(--black);padding:clamp(100px,16vh,200px) 0}
.close-line{margin:0 0 48px;font-size:clamp(1.8rem,8vw,3.6rem);line-height:1.5}
.close-body{max-width:40em}
.close-h{margin:0 0 14px;font-size:1.1rem;letter-spacing:.06em}
.close-body p{margin:0 0 16px;color:#d4d5d9;font-size:var(--fs-m)}
.close-motto{margin-top:28px!important;padding-top:20px;border-top:1px solid var(--d-line);color:var(--white)!important;font-weight:500}

/* ---------- 05 aidle ---------- */
.aidle-chapter{background:var(--black);padding-bottom:clamp(80px,12vh,160px)}
.aidle-body{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(64px,10vh,120px)}
.aidle-h{margin:0 0 18px;font-size:clamp(1.3rem,5.6vw,2rem);line-height:1.5;letter-spacing:.04em}
.aidle-why p,.bridge p{margin:0 0 14px;color:#d6d7db;max-width:40em}
.aidle-note{margin:-6px 0 22px;color:var(--d-mute);font-size:.9rem}
.seg{display:grid;grid-template-columns:1fr 1fr;border:0;margin:0 0 16px;padding:4px;border-radius:999px;background:rgba(255,255,255,.07);max-width:420px}
.seg label{position:relative;min-height:46px;display:grid;place-items:center;border-radius:999px;font-weight:500;font-size:.95rem;cursor:pointer;transition:background .3s,color .3s}
.seg input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.seg label:has(input:checked){background:var(--white);color:var(--black)}
.seg label:has(input:focus-visible){outline:2px solid var(--white);outline-offset:2px;box-shadow:none}
.mock{display:grid;grid-template-columns:minmax(0,1fr);margin:0}
.mock>.mock-human,.mock>.mock-ai{grid-area:1/1;transition:opacity .5s,filter .5s,translate .5s var(--ease)}
.mock[data-view="human"] .mock-ai,.mock[data-view="ai"] .mock-human{opacity:0;filter:blur(6px);translate:0 8px;pointer-events:none}
.motion-off .mock>*{transition:none}
.mock-human{padding:22px;border-radius:20px;background:var(--paper);color:var(--ink);display:grid;gap:10px;grid-template-rows:auto auto auto auto 1fr auto}
.mock-title{margin:0 0 4px;font-weight:700}
.mock .mono{text-transform:none;letter-spacing:.04em}
.mock-row{margin:0;display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--l-line)}
.mock-state{display:inline-flex;align-items:center;gap:8px}
.mock-state i{width:8px;height:8px;border-radius:50%;background:var(--ink)}
.mock-btn{position:relative;justify-self:start;align-self:start;margin-top:8px;padding:10px 18px;border-radius:999px;background:var(--ink);color:var(--white);font-size:.9rem}
.mock-confirm{align-self:end;margin:0;padding:12px 14px;border:1px solid var(--l-line);border-radius:14px;background:var(--white);box-shadow:0 6px 18px rgba(12,12,14,.08)}
.mock-confirm-q{margin:0 0 8px;font-size:var(--fs-s);line-height:1.6;font-weight:600}
.mock-confirm-act{margin:0;display:flex;justify-content:flex-end;gap:8px;font-size:.8125rem;line-height:1.6}
.mock-confirm-act span{padding:4px 12px;border-radius:999px;border:1px solid var(--l-line)}
.mock-confirm-act span:last-child{background:var(--ink);color:var(--white);border-color:var(--ink)}
.mock-hint{margin:0;font-size:.8125rem;line-height:1.7;color:var(--l-mute)}
.mock-ai{margin:0;padding:18px;border-radius:20px;background:#0f1012;box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);overflow:auto;font:400 12.5px/1.75 var(--mono);color:#e6e7ea;white-space:pre;letter-spacing:0}
.mock-ai code{font:inherit}
@media (max-width:359px){ .mock-ai{white-space:pre-wrap} }
.no-js .mock{gap:16px}
.no-js .mock>.mock-human,.no-js .mock>.mock-ai,.no-js .mock figcaption{grid-area:auto}
.mock figcaption{grid-area:2/1;margin-top:14px;font-size:var(--fs-s);line-height:1.85;color:var(--d-mute)}
.spec{margin:0;border-top:1px solid var(--d-line)}
.spec>div{display:grid;gap:6px;align-content:start;padding:20px 0;border-bottom:1px solid var(--d-line)}
.spec dt{display:grid;gap:6px}
.spec code{justify-self:start;font-family:var(--display);font-size:clamp(2.1rem,10.6vw,3.4rem);font-weight:250;line-height:1;letter-spacing:-.035em}
.spec dt span{font-weight:700;font-size:1.05rem}
.spec dd{margin:0;color:#cfd0d4;font-size:var(--fs-m);line-height:1.9}
.js .spec code{clip-path:inset(0 100% 0 0);transition:clip-path .6s steps(12),font-weight 1.1s var(--ease)}
.js .spec>div.in code{clip-path:inset(0 -.15em 0 0)}
html:not(.motion-off).is-active .conditions.in-view .spec>div.in code{font-weight:650}
.motion-off .spec code{font-weight:500}
@media (min-width:1024px){ .spec code{font-size:clamp(2rem,2.6vw,2.6rem)} }
.motion-off .spec code{clip-path:none!important;transition:none}
.map{width:100%;border-collapse:collapse;margin:8px 0 22px}
.map-head{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.map tbody tr{display:grid;grid-template-columns:6em 24px minmax(0,1fr);align-items:center;padding:14px 0;border-bottom:1px solid var(--d-line)}
.map th{text-align:left;font-weight:700;font-size:.95rem}
.map tbody th{grid-column:1}
.map tbody td{grid-column:3;color:#d6d7db;font-size:.95rem;text-wrap:balance}
.map tbody tr::before{content:"→";content:"→" / "";grid-column:2;grid-row:1;text-align:center;color:var(--d-text-3)}
@supports (word-break:auto-phrase){ .map td{word-break:auto-phrase} }
.work-list{list-style:none;margin:0 0 28px;padding:0;display:grid;gap:12px}
.work-list li{padding:20px;border-radius:20px;background:rgba(255,255,255,.04);border:1px solid var(--d-line)}
.work-list .mono{margin:0 0 6px;color:var(--d-text-3)}
.work-list :is(h3,h4){margin:0 0 8px;font-size:1.1rem;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.work-list li>p:last-child{margin:0;color:#cfd0d4;font-size:var(--fs-m)}
.state{font:500 12.5px/1 var(--ja);letter-spacing:.1em;padding:5px 9px;border-radius:999px;border:1px dashed rgba(255,255,255,.55)}
.state[data-state="prep"]{border-style:solid}
.now-panel{padding:22px;border-radius:20px;border:1px solid rgba(255,255,255,.2);margin-bottom:28px}
.now-panel .mono{display:flex;align-items:center;gap:10px;margin:0 0 8px}
.now-panel .status-dot,.is-active .now-panel .status-dot{animation-duration:3.2s}
.now-panel p:last-child{margin:0;color:#d6d7db;font-size:var(--fs-m)}
.aidle-close{margin:clamp(56px,9vh,112px) 0 20px;font-size:clamp(1.6rem,7vw,3rem);line-height:1.5}
.aidle-close-body{margin:0;max-width:34em;color:#d6d7db;font-size:var(--fs-m)}
@media (min-width:1024px){
  .aidle-body{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:clamp(40px,6vw,96px)}
  .aidle-why,.lens{grid-column:span 1}
  .conditions,.bridge,.work{grid-column:span 2}
  .spec{display:grid;grid-template-columns:repeat(3,1fr);column-gap:32px}
  .work-list{grid-template-columns:repeat(3,1fr)}
  .work-list li{scroll-margin-top:calc(var(--header) + 72px)}
  .bridge{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:clamp(40px,6vw,96px);align-items:start}
  .bridge>.aidle-h{grid-column:1/-1}
  .bridge>p:first-of-type{grid-column:1;grid-row:2}
  .bridge>p:last-of-type{grid-column:1;grid-row:3}
  .bridge>.map{grid-column:2;grid-row:2/span 2;margin:0;border-top:1px solid var(--d-line)}
}

/* ---------- 06 glossary ---------- */
.glossary{margin:0;display:grid;border-top:1px solid var(--l-line)}
.glossary>div{display:grid;gap:4px;align-content:start;padding:16px 0;border-bottom:1px solid var(--l-line)}
.glossary dt{font-weight:700}
.glossary dd{margin:0;color:var(--l-mute);font-size:var(--fs-s);line-height:1.85}
.g-used{display:block;margin-top:4px;font-size:12px;color:var(--l-mute)}
.g-used a{display:inline-flex;align-items:center;min-height:32px;color:var(--ink)}
.glossary>div.is-target,html:not(.js) .glossary>div:target{background:rgba(12,12,14,.06);margin-inline:-12px;padding-inline:12px;border-radius:12px}
.sources{margin-top:56px}
.sources-h{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:4px 16px;margin:0;padding-bottom:14px;border-bottom:1px solid var(--ink);font-size:clamp(1.4rem,5.6vw,2rem);font-weight:700;line-height:1.35;letter-spacing:.04em}
.sources-h small{font:400 var(--micro)/1 var(--mono);letter-spacing:.12em;color:var(--l-mute)}
.glossary{border-top:0}
.g-jump{margin:calc(-1 * clamp(20px,4vh,64px)) 0 clamp(28px,5vh,56px);font-size:var(--fs-s)}
.g-jump a{display:inline-flex;align-items:center;gap:8px;min-height:44px;color:var(--ink);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.sources-sub{margin:26px 0 6px;font-size:.82rem;font-weight:700;letter-spacing:.06em;color:var(--l-mute)}
.source-list{margin:0;padding-left:1.1em;display:grid;gap:4px}
.source-list>li>a{display:block;padding:6px 0;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;font-size:.92rem}
.source-note{margin:16px 0 0;font-size:var(--fs-s);color:var(--l-mute);line-height:1.85}
.source-list .ext{font-family:var(--mono);font-size:.85em;color:var(--l-mute)}
@media (min-width:1024px){
  .glossary{grid-template-columns:1fr 1fr;column-gap:48px;border-top:0}
  .glossary>div{border-top:1px solid var(--l-line);border-bottom:0}
  .glossary>div:nth-child(-n+2){border-top:0}
}

/* ---------- 07 company ---------- */
.info{margin:0;border-radius:20px;background:var(--paper-2);overflow:hidden}
.info>div{display:grid;grid-template-columns:6.5em 1fr;gap:12px;padding:14px 16px;border-bottom:1px solid var(--l-line)}
.info>div:last-child{border-bottom:0}
.info>div.wide{grid-template-columns:1fr;gap:4px}
.info dt{color:var(--l-mute);font-size:.9rem}
.info dd{margin:0;font-weight:500}
.info .tbd{font-weight:400;color:var(--l-mute)}
.info .tbd::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;border:1px solid currentColor;margin-right:10px;vertical-align:middle}
.info a{display:inline-flex;min-height:28px;align-items:center;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
@media (min-width:1024px){
  .info{border-radius:0;background:none;border-top:1px solid var(--ink)}
  .info>div,.info>div.wide{grid-template-columns:minmax(120px,1fr) 3fr;gap:24px;padding:22px 0}
  .info>div:last-child{border-bottom:1px solid var(--l-line)}
}
@media (hover:hover) and (min-width:1024px){ .info>div{transition:padding .6s var(--ease)} .info>div:hover{padding-left:12px} }

/* ---------- 08 contact ---------- */
.contact{background:var(--black)}
.contact-big{margin:0;font-family:var(--display);font-weight:200;font-size:clamp(4.2rem,26vw,19rem);line-height:.84;letter-spacing:-.065em;margin-left:-.05em}
.contact-big .o{color:var(--black);-webkit-text-stroke:2.4px rgba(255,255,255,.6);paint-order:stroke fill}
.contact-big{margin-bottom:.12em}
.contact-big .line{padding-bottom:.2em;margin-bottom:-.2em}
.js .contact-big[data-reveal] .line>span{transform:translate3d(0,128%,0)}
.js .contact-big[data-reveal].in .line>span{transform:none}
.contact-row{display:grid;gap:24px;margin-top:clamp(36px,6vh,80px);padding-top:24px;border-top:1px solid var(--d-line)}
.contact-row h2{margin:0 0 8px;font-size:clamp(1.25rem,5vw,1.8rem)}
.contact-row p{margin:0;color:var(--d-mute)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:60px;padding:0 30px;border-radius:999px;border:1px solid var(--d-line);font-family:var(--ja);font-size:.95rem;justify-self:start;color:var(--d-mute)}
.btn i{width:7px;height:7px;border-radius:50%;border:1px solid currentColor}
@media (min-width:1024px){ .contact-row{grid-template-columns:1fr 1fr;align-items:end} .btn{justify-self:end} }

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--black);overflow:hidden;padding-top:40px;padding-bottom:2vw}
.footer-row{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 28px;padding-block:16px;border-top:1px solid var(--d-line);color:var(--d-mute)}
.footer-row ul{list-style:none;display:flex;flex-wrap:wrap;gap:4px 22px;margin:0;padding:0;align-items:center}
.footer-row a{display:inline-flex;min-height:44px;align-items:center}
.footer-row a:hover{color:#fff}
.giant{
  --mx:28%;--my:40%;
  display:block;font-family:var(--display);font-weight:500;white-space:nowrap;width:max-content;padding-right:.04em!important;
  font-size:18vw;line-height:.74;letter-spacing:-.075em;margin:12px 0 -.06em;padding:.04em 0 0;
  background:radial-gradient(circle at var(--mx) var(--my),#ffffff 0%,#d6d9de 16%,#7d818a 34%,#2a2c31 58%,#17181b 80%);
  -webkit-background-clip:text;background-clip:text;color:transparent;user-select:none;-webkit-user-select:none;pointer-events:none
}
.giant span{font-weight:200}
@media (min-width:768px){ .giant span{margin-left:.12em} }
@media (max-width:767px){
  .giant{line-height:.8;margin-top:28px}
  .giant span{display:block}
  .footer-row{display:grid;grid-template-columns:1fr auto;gap:4px 16px}
  .footer-row ul{grid-column:1/-1;grid-row:2;justify-content:space-between;gap:4px 12px}
}

@media (max-width:1023.98px){ body.home .footer-motion{display:none} }

/* ---------- sub pages ---------- */
.back-link{display:inline-flex;align-items:center;min-height:44px}
.page-head{padding:calc(var(--sa-t) + max(calc(var(--header) + 8px), clamp(90px,14vh,180px))) 0 clamp(40px,8vh,96px)}
.page-head .eyebrow{color:var(--d-mute)}
.page-head h1{margin:0;font-size:clamp(2.4rem,10vw,6rem);line-height:1.1;font-weight:700;letter-spacing:.01em}
.page-head p{margin:18px 0 0;color:var(--d-mute)}
.page-body{background:var(--paper);color:var(--ink);padding:clamp(48px,10vh,120px) 0 clamp(80px,14vh,160px)}
.table{width:100%;border-collapse:collapse;border-top:1px solid var(--ink)}
.table th,.table td{text-align:left;padding:18px 12px 18px 0;border-bottom:1px solid var(--l-line);vertical-align:top}
.table th{color:var(--l-mute);font-weight:400}
.table .empty{color:var(--l-mute);text-align:center;padding:64px 12px}
.nf{min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding:calc(var(--sa-t) + var(--header)) var(--pad) calc(80px + var(--sa-b))}
.nf .code{font-family:var(--display);font-weight:200;font-size:clamp(7rem,40vw,26rem);line-height:.8;letter-spacing:-.07em;margin:0 0 0 -.05em;background:var(--silver);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:sheen 8s ease-in-out infinite}
.motion-off .nf .code{animation:none}
.nf h1{margin:32px 0 8px;font-size:clamp(1.4rem,5vw,2.2rem)}
.nf p{margin:0 0 32px;color:var(--d-mute)}
.link-arrow{display:inline-flex;align-items:center;gap:14px;min-height:48px;font-size:1.05rem;border-bottom:1px solid currentColor;align-self:flex-start}
.link-arrow span{transition:transform .5s var(--ease)}
.link-arrow:hover span{transform:translateX(6px)}

/* ---------- pause infinite animations off-screen ---------- */
.js .f-aidle,.js .card-aidle .card-name,.js .net-pulse,.js .net-ring,.js .item.is-current::after,.js .hero-status .status-dot,.js .now-panel .status-dot{animation-play-state:paused}
.js .hero.in-view .hero-status .status-dot,.js .now-panel.in-view .status-dot{animation-play-state:running}
.js .formula-pin.in-view .f-aidle,.js .card-aidle.in-view .card-name,.js .card-aidle.in-view .net-pulse,.js .card-aidle.in-view .net-ring,.js .act.in-view .item.is-current::after{animation-play-state:running}

/* ---------- global motion-off ---------- */
.motion-off *,.motion-off *::before,.motion-off *::after{animation-duration:.001ms!important;animation-iteration-count:1!important}
.motion-off .status-dot,.motion-off .grain,.motion-off .f-aidle,.motion-off .net-pulse{animation:none!important}
.no-js *,.no-js *::before,.no-js *::after{animation:none!important}
.no-js .net-ring{opacity:0}
@media (prefers-reduced-motion:reduce){ html.no-js{scroll-behavior:auto} .no-js *,.no-js *::before,.no-js *::after{transition:none!important} }

/* ---------- surfaces stack like sheets ---------- */
@media screen and (max-width:1023.98px){
  .principles,.business,.interlude,.chapter-close,.glossary-sec,.contact{position:relative;z-index:1;margin-top:-28px;border-radius:28px 28px 0 0}
}
@media screen and (min-width:1024px){
  .principles,.business,.interlude,.chapter-close,.glossary-sec,.contact{position:relative;z-index:1;margin-top:-36px;border-radius:36px 36px 0 0}
}

@media screen{ main>:first-child,.act--page{margin-top:0;border-radius:0} }

/* ---------- pages (v7) ---------- */
@media (prefers-reduced-motion:no-preference){ @view-transition{navigation:auto} }
.dock{view-transition-name:dock}
::view-transition-old(root){animation:.3s ease both vt-out}
::view-transition-new(root){animation:.3s ease both vt-in}
@keyframes vt-out{to{opacity:0}}
@keyframes vt-in{from{opacity:0}}
html.sheet-open .dock{view-transition-name:none}
html.at-sec .dock{translate:-50% 0;pointer-events:auto}
.next-title,.act-ja,.pcard-title{width:fit-content}
::view-transition-group(page-title){animation-duration:.6s;animation-timing-function:cubic-bezier(.16,1,.3,1)}
.crumbs{position:relative;z-index:2;margin:0 0 28px;font-size:var(--micro);letter-spacing:.1em}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;margin:0;padding:0}
.crumbs li{display:flex;align-items:center}
.crumbs li+li::before{content:"/";content:"/" / "";margin:0 10px;opacity:.45}
.crumbs a{display:inline-flex;align-items:center;min-height:32px;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.chapter-door .crumbs,.page-head .crumbs{color:var(--d-mute)}
.light .crumbs,.act .crumbs{color:var(--l-mute)}
.act--page{padding-top:calc(var(--sa-t) + var(--header))}
.act--page>.crumbs{margin:0;padding:max(8px,calc(clamp(90px,14vh,180px) - var(--header))) var(--pad) 10px}
.core-chapter--act{background:var(--paper)}
.contents-go{display:inline-block;font-style:normal;margin-left:8px;color:var(--d-text-3)}
@media (hover:hover){ .contents-go{transition:translate .4s var(--ease)} .contents-list a:hover .contents-go{translate:4px 0} }
.motion-off .contents-go{transition:none;translate:none}
.next-chapter{position:relative;z-index:1;margin-top:-28px;border-radius:28px 28px 0 0;background:var(--black);color:var(--white);padding:clamp(80px,13vh,160px) 0 clamp(64px,10vh,120px)}
.next-chapter:not(:has(.next-line)){padding-top:clamp(64px,9vh,112px)}
.next-inline{margin-top:clamp(56px,9vh,96px)}
.next-line{margin:0 0 clamp(36px,6vh,64px);font-size:clamp(1.9rem,8.4vw,3.6rem);line-height:1.5}
.next-cards{display:grid;gap:12px}
.next-card{display:grid;grid-template-columns:1fr auto;align-items:end;gap:6px 16px;padding:22px 22px 24px;border-radius:24px;background:#101113;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
.next-kicker{grid-column:1/-1;color:var(--d-text-3)}
.next-title{grid-column:1;font-family:"Inter Tight","Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;font-size:clamp(2.8rem,14vw,4.6rem);font-weight:300;line-height:1;letter-spacing:-.02em}
.next-title--long{font-size:clamp(2.2rem,10vw,4.2rem)}
.next-one{grid-column:1;color:var(--d-mute);font-size:var(--fs-m);line-height:1.7}
.next-arrow{grid-column:2;grid-row:2/span 2;align-self:center;display:grid;place-items:center;width:56px;height:56px;border-radius:50%;border:1px solid var(--d-line);font-size:1.3rem;transition:translate .4s var(--ease),background .3s}
@media (hover:hover){ .next-card{transition:background .4s} .next-card:hover{background:#16171a} .next-card:hover .next-arrow{translate:4px 0;background:rgba(255,255,255,.06)} }
.motion-off .next-arrow,.motion-off .next-card{transition:none}
.next-card:focus-visible{outline:2px solid var(--white);outline-offset:3px;background:#16171a}
.next-card:focus-visible .next-arrow{background:rgba(255,255,255,.06)}
.next-card--back{padding:16px 22px 18px;background:transparent}
.next-card--back .next-title{font-size:clamp(1.8rem,8vw,2.6rem)}
.next-card--back .next-arrow{width:44px;height:44px}
@media (hover:hover){ .next-card--back:hover{background:rgba(255,255,255,.04)} .next-card--back:hover .next-arrow{translate:-4px 0} }
.motion-off .next-card--back:hover .next-arrow{translate:none}
.footer-nav ul{list-style:none;margin:0;padding:4px 0 18px;display:flex;flex-wrap:wrap;gap:0 22px}
.footer-nav a{display:inline-flex;align-items:center;min-height:44px;color:var(--d-mute);font-size:.92rem}
.footer-nav a[aria-current="page"]{color:var(--white);text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:1px}
@media (hover:hover){ .footer-nav a:hover{color:var(--white)} }
@media (min-width:1024px){
  .next-chapter{margin-top:-36px;border-radius:36px 36px 0 0}
  .next-cards{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
  .next-card{padding:32px}
  .next-card--back{padding:22px 32px}
  .next-chapter .wrap:has(.next-line){display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:end;column-gap:clamp(40px,6vw,96px)}
  .next-chapter .wrap:has(.next-line) .next-cards{grid-template-columns:minmax(0,1fr)}
  .next-chapter .next-line{margin:0}
  .next-cards:has(> .next-card:only-child){grid-template-columns:minmax(0,760px)}
  .next-inline .next-cards{grid-template-columns:repeat(auto-fit,minmax(320px,40em))}
  .next-cards:has(> .next-card--back){grid-template-columns:minmax(0,760px) minmax(0,380px);align-items:end}
}

/* ---------- touch feedback ---------- */
@media (hover:none){
  .dock-tabs a,.dock-tabs button,.deck-ctrl button,.sheet-close,.wake{transition:scale .16s var(--ease)}
  html:not(.motion-off) :is(.dock-tabs a,.dock-tabs button,.deck-ctrl button:not([aria-disabled="true"]),.sheet-close,.wake):active{scale:.94;transition-duration:.08s}
  .toc-list a:active,.toc-sub a:active,.contents-list a:active,.card-aidle a:active,.pcard-link:active{background:rgba(255,255,255,.07);border-radius:10px}
  .light a:active,.act a:active,.card-core a:active{background:rgba(12,12,14,.07);border-radius:6px}
  .next-card{transition:background .2s,scale .16s var(--ease)}
  html:not(.motion-off) .next-card:active{scale:.985;transition-duration:.08s}
  .next-card:active{background:#1a1b1e}
  .next-card--back:active{background:rgba(255,255,255,.06)}
  .next-card:active .next-arrow{background:rgba(255,255,255,.1);transition-duration:.08s}
  .footer-nav a:active,.chapter-door .crumbs a:active,.page-head .crumbs a:active,.contact .u-link:active,.nf .link-arrow:active{background:rgba(255,255,255,.07);border-radius:6px}
  .motion-off .dock-tabs a,.motion-off .dock-tabs button,.motion-off .deck-ctrl button,.motion-off .sheet-close,.motion-off .wake{transition:none}
}

/* ---------- short screens (landscape phones, 400% zoom) ---------- */
@media (max-width:1023.98px) and (max-height:500px){
  :root{--dock:48px}
  .dock{bottom:calc(var(--sa-b) + 6px);padding:4px 4px 4px 12px}
  .dock-tabs{height:40px;right:4px}
  .dock-tabs a,.dock-tabs button,.dock-now{min-height:40px;height:40px}
  .dock-ind{top:4px;height:32px}
  .sheet{max-height:calc(100svh - 8px - var(--sa-t))}
  .sheet-grip,.sheet-now,.sheet-kicker{display:none}
  .sheet-head{padding:12px 22px 6px}
  .sheet--term .sheet-head h2{font-size:1.35rem}
  .sheet-foot{padding:6px 22px calc(6px + var(--sa-b))}
  .sheet-close{min-height:44px}
  html:not(.header-in) .dock.is-shown:not(:has(:focus-visible)){translate:-50% calc(100% + 30px + var(--sa-b));pointer-events:none}
}

/* ---------- print ---------- */
@media print{
  html{color-scheme:light}
  .dock,.sheet,.hero-canvas,.marquee,.grain,.cursor,.hud,.loader,.site-header,.header-scrim,.wake,.deck-ctrl,.giant{display:none!important}
  .beat{font-weight:600!important}
  body,.light,.act,.hero,.concept,.business,.core-chapter,.aidle-chapter,.contact,.chapter-close,.interlude{background:#fff!important;color:#000!important}
  .fade,.beat,[data-reveal] .line>span{opacity:1!important;transform:none!important}
  .formula-wrap{height:auto}.formula-pin{position:static;height:auto;--p:1!important}
  .f-row,.f-op,.f-term small,.f-result,.f-core{opacity:1!important;transform:none!important}
  .principles-list li,.card,.act-head{position:static!important}
  *,*::before,*::after{color:#000!important;-webkit-text-fill-color:#000!important;text-shadow:none!important;box-shadow:none!important}
  .h-en{mix-blend-mode:normal!important}
  .contents,.site-footer,.card,.pcard,.mock-human,.mock-ai,.mock-btn,.principles-list li,.work-list li,.now-panel,.aside-note,.info,.dict,.spec,.map{background:none!important}
  .card,.pcard,.mock-human,.mock-ai,.mock-btn,.principles-list li,.work-list li,.now-panel,.aside-note,.info{border:1px solid #bbb!important}
  .contents-list,.contents-list a,.contents-list li,.footer-row,.close-motto{border-color:#ccc!important}
  .mock-ai{white-space:pre-wrap!important;overflow:visible!important}
  .hero-fallback,.hero-veil,.core-hit,.numeral,.act-num,.contact-big,.process-art,.card-art,.mock-confirm{display:none!important}
  .formula{--m:0!important}
}

/* ---------- forced colors ---------- */
@media (forced-colors:active){
  .act-map a[aria-current]{text-decoration:underline;text-underline-offset:6px}
  .motion-switch.mono::before,.sheet-setting .motion-switch small::after{forced-color-adjust:none}
  .sheet-setting .motion-switch[aria-checked="true"] small::after{background-color:Highlight;background-image:radial-gradient(circle,HighlightText 0 6px,transparent 6.5px);border-color:Highlight}
  .seg label:has(input:checked){forced-color-adjust:none;background:Highlight;color:HighlightText}
  .toc-list a[aria-current]>span::before,.toc-sub a[aria-current]::before{forced-color-adjust:none;background:Highlight}
  .dock-tabs a[aria-current]{text-decoration:underline}
  .site-nav a[aria-current],.site-nav a:hover,.site-nav a:focus-visible{text-decoration:underline;text-underline-offset:6px;opacity:1}
  .site-header,.h-en,.hud,.cursor{mix-blend-mode:normal}
  .wake.is-on{forced-color-adjust:none;background:Highlight;color:HighlightText;border-color:HighlightText}
  .wake.is-on .wake-ring circle{stroke:HighlightText}
}

/* ---------- public-information AI guide ---------- */
.chat-launch{position:fixed;right:max(16px,var(--sa-r));bottom:calc(88px + var(--sa-b));z-index:95;display:flex;align-items:center;gap:8px;min-height:48px;padding:10px 17px;border:1px solid #666970;border-radius:999px;background:#17181b;color:#f7f7f8;box-shadow:0 6px 24px #0005;font-size:.875rem;letter-spacing:.02em;line-height:1.5}
.chat-launch[hidden]{display:none!important}
.chat-launch>span{font-size:1.25rem}
.sheet--chat{max-width:520px;height:min(88dvh,760px);max-height:calc(100dvh - var(--sa-t) - 8px);color-scheme:dark}
.chat-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px 4px;flex-shrink:0}
.chat-eyebrow{margin:0 0 4px;color:#aeb0b7;font-size:10px;letter-spacing:.12em}
.chat-head h2{margin:0;font-size:1.2rem;line-height:1.6;letter-spacing:.02em}
.chat-close{width:44px;height:44px;flex-shrink:0;border:1px solid #5d6069;border-radius:50%;font:26px/1 var(--ja)}
.chat-description{margin:4px 20px 10px;font-size:.8rem;line-height:1.7;color:#b7bac2;flex-shrink:0}
.chat-modes{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin:0 20px 12px;flex-shrink:0}
.chat-modes button{min-height:44px;border:1px solid #656873;border-radius:10px;font-size:.85rem;letter-spacing:0;line-height:1.4;padding:6px}
.chat-modes button[aria-pressed="true"]{background:#ebebed;color:#0c0c0e;border-color:#ebebed;font-weight:700}
.chat-scroll{min-height:0;flex:1;overflow:auto;overscroll-behavior:contain;padding:0 20px 16px}
.chat-intro{font-size:.875rem;line-height:1.85;margin:0 0 12px;color:#d3d5da}
.chat-starters{display:flex;flex-direction:column;align-items:flex-start;gap:8px;margin-bottom:18px}
.chat-starters button{font-size:.8rem;line-height:1.65;text-align:left;border:1px solid #4c5059;border-radius:12px;padding:10px 12px;min-height:44px;max-width:100%;overflow-wrap:anywhere}
.chat-message{margin:14px 0;padding:12px 14px;border-radius:14px;background:#23252b;overflow-wrap:anywhere;font-family:"Hiragino Sans","Yu Gothic",Meiryo,system-ui,sans-serif;font-size:.9rem;line-height:1.85;letter-spacing:.02em}
.chat-message--user{margin-left:26px;background:#e1e1e5;color:#0c0c0e}
.chat-message--assistant{margin-right:12px;border:1px solid #424650}
.chat-message-label{display:block;font-size:.7rem;font-weight:700;opacity:.8}
.chat-message p{margin:4px 0 0;white-space:pre-wrap;text-wrap:wrap}
.chat-status{font-size:.85rem;line-height:1.8;color:#f1f2f5;overflow-wrap:anywhere}
.chat-status:empty{display:none}
.chat-reference{display:flex;flex-wrap:wrap;gap:2px 14px;margin-top:12px;font-size:.75rem;line-height:1.6}
.chat-reference span{width:100%;color:#aeb0b7}
.chat-reference a{display:inline-flex;align-items:center;min-height:36px;text-decoration:underline;text-underline-offset:4px}
.chat-notice{font-size:.72rem;line-height:1.8;color:#afb2bb;margin:6px 0 0}
.chat-form{flex-shrink:0;padding:10px 20px calc(12px + var(--sa-b));border-top:1px solid #424650;background:#17181b}
.chat-label-row{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px;font-size:.75rem;line-height:1.5}
.chat-label-row button{min-height:32px;text-decoration:underline;text-underline-offset:3px;color:#b7bac2}
.chat-input-row{display:flex;align-items:stretch;gap:8px}
.chat-input-row textarea{display:block;flex:1;min-width:0;max-height:130px;resize:vertical;padding:10px;border:1px solid #777b85;border-radius:10px;background:#0c0c0e;color:#f7f7f8;font:16px/1.5 "Hiragino Sans","Yu Gothic",Meiryo,system-ui,sans-serif;letter-spacing:0}
.chat-input-row textarea::placeholder{color:#9a9da5;font-size:.8rem}
.chat-send{width:54px;flex-shrink:0;border-radius:10px;background:#ebebed;color:#0c0c0e;font-size:.8rem;line-height:1.5}
.chat-send span{display:block;font-size:1.5rem;line-height:1.2}
.sheet--chat button:disabled{opacity:.5;cursor:wait}
#chat-privacy{font-size:.65rem;line-height:1.7;color:#b7bac2;margin:8px 0 0;letter-spacing:.015em}
@media(min-width:1024px){.chat-launch{right:24px;bottom:24px}.sheet--chat{left:auto;right:24px;bottom:24px;max-height:calc(100dvh - 48px);border-radius:22px}}
@media(max-width:359px){.chat-head{padding-inline:14px}.chat-description{margin-inline:14px}.chat-modes{margin-inline:14px}.chat-scroll,.chat-form{padding-inline:14px}}
@media(max-height:550px){.sheet--chat{height:calc(100dvh - 8px);max-height:calc(100dvh - 8px)}.chat-head{padding-top:8px}.chat-eyebrow,.chat-description{display:none}.chat-modes{margin-bottom:6px}.chat-form{padding-top:4px}.chat-input-row textarea{max-height:65px;padding:6px}.chat-label-row{margin:0}#chat-privacy{font-size:.6rem;margin-top:4px}}
@media(max-width:1023.98px){
  .sheet--chat{inset:0;margin:0;width:100%;max-width:none;height:100vh;height:100dvh;max-height:100vh;max-height:100dvh;border-radius:0;box-shadow:none}
  .sheet--chat .chat-head{padding-top:calc(10px + var(--sa-t));padding-bottom:2px}
  .sheet--chat .chat-head,.sheet--chat .chat-scroll,.sheet--chat .chat-form{padding-left:max(14px,var(--sa-l));padding-right:max(14px,var(--sa-r))}
  .sheet--chat .chat-description,.sheet--chat .chat-modes{margin-left:max(14px,var(--sa-l));margin-right:max(14px,var(--sa-r))}
}
@media print{.chat-launch,.sheet--chat{display:none!important}}

/* ---------- right-side page menu ---------- */
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:6px 0 6px 12px;white-space:nowrap;font-size:.8rem;letter-spacing:.04em}
.menu-toggle-icon{display:block;width:22px;height:14px;border-top:1.5px solid currentColor;border-bottom:1.5px solid currentColor;position:relative}
.menu-toggle-icon::after{content:"";position:absolute;top:50%;left:0;width:100%;border-top:1.5px solid currentColor;transform:translateY(-50%)}
.sheet--menu{inset:0 0 0 auto;margin:0;width:min(88vw,420px);max-width:none;height:100vh;height:100dvh;max-height:100vh;max-height:100dvh;border-radius:0;box-shadow:-20px 0 60px #0005;transition:translate .32s var(--ease)}
.sheet--menu[open]{translate:0 0}
.sheet--menu.is-closing{translate:calc(100% + 40px) 0}
@starting-style{.sheet--menu[open]{translate:calc(100% + 40px) 0}}
.menu-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:calc(20px + var(--sa-t)) max(22px,var(--sa-r)) 18px 22px;flex-shrink:0;border-bottom:1px solid var(--d-line)}
.menu-kicker{margin:0 0 6px;font-size:10px;color:var(--d-text-3);letter-spacing:.14em}
.menu-head h2{margin:0;font-size:1.4rem;line-height:1.5;font-weight:500}
.menu-close{display:grid;place-items:center;flex-shrink:0;width:44px;height:44px;border:1px solid #5d6069;border-radius:50%;font:28px/1 var(--ja)}
.menu-body{min-height:0;flex:1;padding:6px max(22px,var(--sa-r)) 20px 22px}
.menu-links{list-style:none;counter-reset:menu-item;margin:0;padding:0}
.menu-links a{counter-increment:menu-item;display:flex;align-items:center;gap:16px;min-height:58px;padding:12px 0;border-bottom:1px solid var(--d-line);font-size:1.05rem;line-height:1.5;letter-spacing:.03em}
.menu-links a::before{content:counter(menu-item,decimal-leading-zero);font-family:var(--mono);font-size:10px;letter-spacing:0;color:var(--d-text-3)}
.menu-links a::after{content:"→";margin-left:auto;font-size:1.1rem;color:var(--d-text-3)}
.menu-links a[aria-current="page"]{font-weight:700}
.menu-links a[aria-current="page"]::after{content:"●";font-size:8px;color:currentColor}
.menu-links a:hover,.menu-links a:focus-visible{background:rgba(255,255,255,.05)}
.menu-foot{flex-shrink:0;margin:0;padding:14px max(22px,var(--sa-r)) calc(18px + var(--sa-b)) 22px;border-top:1px solid var(--d-line);font-family:var(--display);font-size:.8rem;color:var(--d-text-3);letter-spacing:.02em}