/* ALETHIUM brand site — shared stylesheet
   Palette: night (#0F0D2A) / indigo (#1E1B4B) / ivory (#F4EFE6) / paper, with the logo gradient (#BD4BC2 → #7D6BDF → #3BC1EB) used only as light.
   One metaphor: the two time axes (valid time × recorded time). Facts are added, never erased. */
@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500&family=Cormorant+Garamond:ital,wght@0,400;0,500;1,400&family=Noto+Serif+JP:wght@400;600&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root{
  --night:#0F0D2A;--night-2:#16133A;--indigo:#1E1B4B;--ivory:#F4EFE6;--ivory-2:#d9d3e8;--ivory-muted:#a9a3c8;
  --paper:#faf9f7;--paper-2:#f2f0ec;--ink:#1a1a1a;--body:#3d3b38;--muted:#73716e;--line:#e3e0dc;--line-2:#d4d0ca;
  --dline:rgba(244,239,230,.14);--dline-2:rgba(244,239,230,.24);
  --magenta:#BD4BC2;--violet:#7D6BDF;--cyan:#3BC1EB;--accent:#5b45d6;
  --grad:linear-gradient(100deg,var(--magenta),var(--violet) 50%,var(--cyan));
  --cap:"Cinzel","Cormorant Garamond",Georgia,serif;
  --latin:"Cormorant Garamond",Georgia,"Times New Roman",serif;
  --serif:"Cormorant Garamond","Noto Serif JP","Hiragino Mincho ProN","Yu Mincho",serif;
  --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-serif;
  --nav-h:68px;--gutter:clamp(20px,6vw,96px);--max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 12px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.9;font-feature-settings:"palt" 1;overflow-x:clip}
img,svg{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:400;margin:0;color:var(--indigo);word-break:keep-all;overflow-wrap:anywhere}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:var(--indigo);color:var(--ivory)}
:focus-visible{outline:2px solid var(--violet);outline-offset:3px}

/* Typography */
.eyebrow{font-family:var(--cap);font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted);font-weight:500}
.latin{font-family:var(--latin)}
.lead{font-size:clamp(17px,1.35vw,19px);line-height:2.05;color:var(--body);letter-spacing:.01em}
.body p{font-size:clamp(16px,1.2vw,17.5px);line-height:2.05;color:var(--body);letter-spacing:.012em}
.body p + p{margin-top:1.2em}
.pull{font-family:var(--serif);font-size:clamp(24px,2.6vw,34px);line-height:1.7;color:var(--indigo);letter-spacing:.01em}
.glow{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.tag{display:inline-block;font-family:var(--sans);font-size:11.5px;letter-spacing:.08em;padding:2px 10px;border:1px solid currentColor;border-radius:999px;line-height:1.7;white-space:nowrap}
.tag.live{color:#2f7d5b}.tag.part{color:#8a6a1f}.tag.vision{color:var(--accent)}
.meter{display:inline-flex;gap:3px;margin-left:8px;vertical-align:middle;color:#8a6a1f}
.meter i{display:block;width:12px;height:6px;border-radius:2px;background:currentColor;opacity:.2}
.meter i.on{opacity:1}
.dark .meter{color:#e6c779}
.dark .tag.live{color:#7fd6ae}.dark .tag.part{color:#e6c779}.dark .tag.vision{color:#b9adff}

/* Nav */
.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:20;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 var(--gutter);background:rgba(15,13,42,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--dline)}
.nav .logo img{display:block;width:170px;height:auto}
.nav-links{display:flex;align-items:center;gap:clamp(16px,2.4vw,38px);font-family:var(--cap);font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ivory)}
.nav-links a{padding:8px 0;border-bottom:1px solid transparent;transition:border-color .2s;white-space:nowrap}
.nav-links a:hover{border-color:var(--ivory)}
.nav-links a.is-current{border-color:var(--cyan)}

/* Sections */
.section{padding:clamp(96px,11vw,160px) var(--gutter);position:relative}
.section.alt{background:var(--paper-2)}
.wrap{max-width:var(--max);margin:0 auto}
.narrow{max-width:820px;margin:0 auto}
.section-head{display:flex;align-items:center;gap:20px;margin-bottom:clamp(44px,5vw,72px)}
.section-head .rule{flex:1;height:1px;background:var(--line-2)}
.section-head .num{font-family:var(--cap);font-size:12.5px;letter-spacing:.22em;color:var(--indigo)}
.h2{font-size:clamp(32px,4.4vw,58px);line-height:1.4;letter-spacing:-.005em}
.d{font-family:"Noto Serif JP",serif}
.h3{font-size:clamp(22px,2.2vw,29px);line-height:1.6}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(40px,6vw,96px);align-items:center}
.split > *{min-width:0}

/* Dark sections */
.dark{background:var(--night);color:var(--ivory)}
.dark h1,.dark h2,.dark h3,.dark .pull{color:var(--ivory)}
.dark .eyebrow{color:var(--ivory-muted)}
.dark .lead,.dark .body p{color:var(--ivory-2)}
.dark .section-head .rule{background:var(--dline-2)}
.dark .section-head .num{color:var(--ivory)}

/* Links */
.textlink{display:inline-flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid currentColor;font-size:14.5px;letter-spacing:.06em;transition:gap .2s}
.textlink .arr{font-family:var(--latin);font-size:17px;line-height:1}
.textlink:hover{gap:18px}
.links{display:flex;flex-wrap:wrap;gap:16px 36px;margin-top:36px}
.note{font-size:13px;color:var(--muted);line-height:1.8}
.dark .note{color:var(--ivory-muted)}

/* Cards */
.cards{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.cards.c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cards.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:var(--paper);padding:clamp(26px,3vw,40px);display:flex;flex-direction:column;gap:14px;min-width:0}
.alt .card{background:var(--paper)}
.card .k{font-family:var(--cap);font-size:11.5px;letter-spacing:.2em;color:var(--violet);text-transform:uppercase}
.card h3{font-size:clamp(20px,1.9vw,25px);line-height:1.55}
.card p{font-size:15px;line-height:1.95;color:var(--body)}
.card .foot{margin-top:auto;padding-top:8px}
.dark .cards{background:var(--dline);border-color:var(--dline)}
.dark .card{background:var(--night)}
.dark .card p{color:var(--ivory-2)}
.dark .card .k{color:#9d8ff0}

/* The time plane — the one visual unit */
.plane{position:relative;width:100%}
.plane svg{display:block;width:100%;height:auto}

/* Footer */
.footer{background:var(--night);color:var(--ivory-muted);padding:48px var(--gutter);border-top:1px solid var(--dline);font-size:13px}
.footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px 32px;align-items:center}
.footer img{width:150px;display:block}
.tm{font-family:var(--sans);font-size:.62em;font-weight:400;letter-spacing:0;vertical-align:super;line-height:0;margin-left:1px}
.logo{display:inline-flex;align-items:flex-start}.logo .tm,.fl .tm{font-size:10px;color:var(--ivory-muted);margin:2px 0 0 3px;vertical-align:baseline;line-height:1}
.fl{display:inline-flex;align-items:flex-start}
.tmnote{flex-basis:100%;margin:0;font-size:12px;line-height:1.8;color:var(--ivory-muted)}

/* Reveal on scroll (content stays visible without JS) */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .8s ease,transform .8s ease}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .rv{opacity:1;transform:none;transition:none}}

@media (max-width:960px){
  .split,.cards.c3{grid-template-columns:minmax(0,1fr)}
  .cards.c2{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:760px){
  .nav-links .hide-sm{display:none}
  .nav .logo img{width:132px}
  .nav-links{gap:14px;font-size:11.5px;letter-spacing:.12em}
}