/* 編元公社 homepage — consolidated stylesheet (2026-10-23 redesign).
   Replaces styles.css, motion.css, skill-posters.css, research.css,
   course-film.css, /learn/home-section.css and the inline <style> blocks.
   Rhythm: ink sections alternate with paper sections; orange marks the one
   primary action and active states only. */

:root{
  color-scheme:dark;
  --ink-0:#0c0e0d;--ink-1:#131614;--ink-2:#1a1e1b;--ink-3:#232823;
  --line:#2b312c;--line-strong:#3d453e;
  --text:#f2efe6;--text-2:#c9cbc1;--muted:#9da396;
  --paper:#efebe1;--paper-2:#f7f4ec;--paper-ink:#1c201b;--paper-muted:#5b6156;--paper-line:#d3ccbc;
  --accent:#ef7a3a;--accent-hover:#ff9152;--accent-ink:#1d0f06;--accent-deep:#a9481a;--accent-soft:#ef7a3a1f;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
  --display:"Avenir Next Condensed","DIN Condensed","Bahnschrift Condensed","Bahnschrift","Roboto Condensed","Arial Narrow",sans-serif;
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",serif;
  --latin-serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --gap:clamp(16px,4.6vw,80px);
  --header-h:68px;
  /* Names kept for course-enrollment-20260922.css and five-rooms css. */
  --bg:var(--ink-0);--ink:var(--text);--surface:var(--ink-1);
}

/* ---------- Base ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{margin:0;background:var(--ink-0);color:var(--text);font:16px/1.7 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body:has(dialog[open]){overflow:hidden}
h1,h2,h3,p{margin:0}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;padding:0}
button:disabled{cursor:default}
a,button{-webkit-tap-highlight-color:transparent}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
::selection{background:var(--accent);color:var(--accent-ink)}
.wrap{width:calc(100% - var(--gap)*2);max-width:1440px;margin-inline:auto}
.mono{font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.muted{color:var(--muted)}
.skip{position:fixed;top:-100px;left:16px;z-index:200;background:var(--accent);color:var(--accent-ink);padding:12px 16px}
.skip:focus{top:12px}

/* ---------- Buttons ---------- */
.button{display:inline-flex;align-items:center;justify-content:space-between;gap:18px;min-height:48px;padding:0 20px;font-size:16px;font-weight:600;line-height:1.3;white-space:nowrap;transition:background-color .2s,color .2s,border-color .2s,transform .2s}
.button>span{font-size:18px;transition:transform .2s}
.button:hover>span,.button:focus-visible>span{transform:translate(2px,-2px)}
.mint,.button.is-primary{background:var(--accent);color:var(--accent-ink)}
.mint:hover,.button.is-primary:hover{background:var(--accent-hover)}
.button.is-ghost{border:1px solid var(--line-strong);color:var(--text)}
.button.is-ghost:hover{border-color:var(--text)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;height:var(--header-h);padding:0 var(--gap);display:flex;align-items:center;justify-content:space-between;gap:16px;background:#0c0e0dd9;border-bottom:1px solid #ffffff12;-webkit-backdrop-filter:saturate(1.4) blur(14px);backdrop-filter:saturate(1.4) blur(14px)}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.official-logo{width:150px;height:auto;aspect-ratio:1604/275}
.brand-chinese{font-size:15px;font-weight:500;letter-spacing:.32em;color:var(--text-2);padding-left:12px;border-left:1px solid var(--line-strong);line-height:1.2}
.site-header nav{display:none}
.site-header nav.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;padding:8px var(--gap) 20px;background:var(--ink-0);border-bottom:1px solid var(--line)}
.site-header nav.open>a,.site-header nav.open>button{min-height:52px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:17px;color:var(--text);text-align:left}
.nav-actions{display:flex;align-items:center;gap:8px}
.site-header .account-entry{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border:1px solid var(--line-strong);font-size:14px;color:var(--text);white-space:nowrap;transition:border-color .2s,color .2s}
.site-header .account-entry:hover{border-color:var(--accent);color:var(--accent)}
.menu-toggle{width:44px;height:44px;font-size:20px;color:var(--text)}
@media(min-width:1024px){
  .site-header{display:grid;grid-template-columns:1fr auto 1fr}
  .site-header nav{display:flex;align-items:center;gap:30px}
  .site-header nav>a,.site-header nav>button{position:relative;display:inline-flex;align-items:center;min-height:44px;font-size:15px;color:var(--text-2);white-space:nowrap;transition:color .2s}
  .site-header nav>a::after,.site-header nav>button::after{content:"";position:absolute;left:0;right:0;bottom:8px;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:right;transition:transform .24s ease}
  .site-header nav>a:hover,.site-header nav>button:hover{color:var(--text)}
  .site-header nav>a:hover::after,.site-header nav>button:hover::after,.site-header nav>a:focus-visible::after,.site-header nav>button:focus-visible::after{transform:scaleX(1);transform-origin:left}
  .nav-actions{justify-self:end}
  .menu-toggle{display:none}
  .official-logo{width:172px}
}
@media(max-width:420px){.brand-chinese{display:none}.official-logo{width:140px}}
@media(max-width:360px){.site-header{gap:8px}.official-logo{width:112px}.site-header .account-entry{padding-inline:10px}.nav-actions,.menu-toggle{flex-shrink:0}}

/* ---------- Hero ---------- */
/* --night matches the artwork's own black so the picture has no visible frame. */
.hero{--night:#050406;position:relative;display:flex;flex-direction:column;background:var(--night);color:var(--text);overflow:hidden;isolation:isolate}
.hero-inner{position:relative;z-index:2;order:1;padding-top:48px}
.hero-art{position:relative;order:2;height:clamp(260px,72vw,440px);margin-top:12px;z-index:0}
.hero-art picture{position:absolute;inset:0}
.hero-art img,.zone-stage{width:100%;height:100%;mask-image:linear-gradient(180deg,transparent,#000 16%,#000 84%,transparent);-webkit-mask-image:linear-gradient(180deg,transparent,#000 16%,#000 84%,transparent)}
.hero-art img{object-fit:cover;object-position:70% 100%}
.zone-stage{position:absolute;inset:0;pointer-events:none}
.zone-stage svg{display:block;width:100%;height:100%;overflow:hidden}
.hero.world-sequenced .hero-art picture{display:none}
.hw-world,.hw-lqip{transition:opacity 1s ease}
.art-vignette{position:absolute;inset:0;pointer-events:none;background:linear-gradient(0deg,var(--night),#05040600 30%)}
.art-coordinate{display:none}
.motion-controls{position:relative;order:3;z-index:3;align-self:flex-end;margin:-56px var(--gap) 0 0}
.motion-controls button{width:40px;height:40px;display:grid;place-items:center;border:1px solid #ffffff2b;border-radius:50%;background:#05040699;color:var(--text-2);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:border-color .2s,color .2s}
.motion-controls button:hover{border-color:var(--accent);color:var(--accent)}
.motion-icon{font-size:13px;letter-spacing:-.12em}
.hero-bottom{position:relative;order:4;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:16px;padding-block:20px 28px;font-size:14px;color:var(--muted);border-top:1px solid #ffffff14;margin-top:16px}
.scroll-hint{display:inline-flex;align-items:center;gap:12px;transition:color .2s}
.scroll-hint:hover{color:var(--text)}
.scroll-hint span{width:28px;height:28px;border:1px solid var(--line-strong);border-radius:50%;display:grid;place-items:center;animation:hint-bob 2.4s ease-in-out infinite}

.eyebrow{display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;font-size:15px;color:var(--text-2);letter-spacing:.06em}
.eyebrow>i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.eyebrow .mono{color:var(--muted);font-size:12px}
.hero h1{margin-top:28px;font-size:clamp(46px,12.4vw,148px);font-weight:600;line-height:1.02;letter-spacing:-.055em;white-space:nowrap;animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
.world-word{position:relative;color:var(--accent);white-space:nowrap}
.world-word svg{position:absolute;left:0;bottom:-.14em;width:100%;height:.24em;overflow:visible;fill:none;stroke:var(--accent);stroke-width:1.6;stroke-linecap:round;stroke-dasharray:600;stroke-dashoffset:600;animation:draw 1.4s .5s ease-out forwards}
.brand-slogan{margin-top:26px;font:italic 400 clamp(20px,2.1vw,28px)/1.3 var(--latin-serif);color:#e9c4a8;letter-spacing:.005em;animation:rise .9s .08s cubic-bezier(.2,.7,.2,1) both}
.hero-description{margin-top:14px;font-size:17px;line-height:1.7;color:var(--text-2);animation:rise .9s .12s cubic-bezier(.2,.7,.2,1) both}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;animation:rise .9s .16s cubic-bezier(.2,.7,.2,1) both}
.hero-entry{display:inline-flex;align-items:center;justify-content:space-between;gap:22px;min-height:54px;padding:0 22px;font-size:16px;font-weight:600;border:1px solid #ffffff38;color:var(--text);background:#0c0e0d66;transition:background-color .2s,border-color .2s,color .2s,transform .2s}
.hero-entry>span{font-size:18px;transition:transform .2s}
.hero-entry:hover,.hero-entry:focus-visible{border-color:var(--text);transform:translateY(-2px)}
.hero-entry:hover>span,.hero-entry:focus-visible>span{transform:translate(3px,-3px)}
.hero-entry.is-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.hero-entry.is-primary:hover,.hero-entry.is-primary:focus-visible{background:var(--accent-hover);border-color:var(--accent-hover)}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:40px 0 0;padding:0;max-width:560px;animation:rise .9s .24s cubic-bezier(.2,.7,.2,1) both}
.hero-tags li{font-size:14px;color:var(--text-2);padding:6px 12px;border:1px solid var(--line-strong);border-radius:999px;background:#0c0e0d80}

@media(min-width:960px){
  .hero{display:block;height:calc(100svh - var(--header-h));min-height:660px;max-height:900px}
  .hero-inner{position:relative;padding-top:clamp(72px,14vh,150px)}
  .hero-art{position:absolute;inset:0 0 0 30%;height:auto;margin:0}
  .hero-art img,.zone-stage{mask-image:linear-gradient(90deg,transparent,#000 34%),linear-gradient(180deg,transparent,#000 14%);-webkit-mask-image:linear-gradient(90deg,transparent,#000 34%),linear-gradient(180deg,transparent,#000 14%);mask-composite:intersect;-webkit-mask-composite:source-in}
  /* Title scrim: keeps 一念，一世界 crisp where the paper ribbons reach under it. */
  .art-vignette{background:radial-gradient(ellipse 46% 40% at 2% 44%,#050406d9,#05040600 100%),linear-gradient(90deg,var(--night) 0,#05040600 30%),linear-gradient(0deg,var(--night),#05040600 24%)}
  .art-coordinate{display:block;position:absolute;right:4%;top:9%;color:#ffffff73;font-size:12px}
  .motion-controls{position:absolute;margin:0;right:var(--gap);bottom:88px}
  .hero-bottom{position:absolute;left:0;right:0;bottom:0;margin:0 auto;padding-block:22px 26px}
  .hero h1{font-size:clamp(84px,8.6vw,148px)}
}
/* The title's orange waits for the world to light up (hero-world-20261023.js adds .world-lit). */
.world-word{transition:color 1s ease,text-shadow 1.6s ease}
.hero.world-sequenced:not(.world-lit) .world-word{color:#6e4b37}
.hero.world-sequenced .world-word svg{animation:none}
.hero.world-lit .world-word{text-shadow:0 0 42px #ef7a3a40}
.hero.world-sequenced.world-lit .world-word svg{animation:draw 1.3s .15s ease-out forwards}

/* ---------- Section scaffold ---------- */
.section{padding-block:clamp(72px,9vw,128px)}
.section-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px 24px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.kicker{display:inline-flex;align-items:baseline;gap:14px;font-size:15px;font-weight:500;letter-spacing:.04em}
.kicker>span{font:500 13px var(--mono);color:var(--accent);letter-spacing:.06em}
.section-top>.mono{display:none;color:var(--muted)}
@media(min-width:720px){.section-top>.mono{display:block}}
.section-heading{display:flex;flex-direction:column;gap:24px;margin:clamp(36px,5vw,64px) 0 clamp(32px,4vw,52px)}
.section-heading h2,.research-intro h2,.community-copy h2,.academy-top h2{font-size:clamp(32px,4.2vw,60px);line-height:1.22;font-weight:600;letter-spacing:-.04em}
@media(min-width:900px){.section-heading{flex-direction:row;justify-content:space-between;align-items:flex-end}}
.section-note{margin-top:28px;font-size:15px;color:var(--muted)}
.section-note>span{color:var(--accent);margin-right:10px}

/* Paper sections */
.academy-section,.research-section{background:var(--paper);color:var(--paper-ink);--line:var(--paper-line);--line-strong:#bdb5a3;--muted:var(--paper-muted)}
.academy-section .kicker>span,.research-section .kicker>span{color:var(--accent-deep)}
.academy-section a:focus-visible,.academy-section button:focus-visible,.research-section button:focus-visible{outline-color:var(--accent-deep)}

/* ---------- 01 Skills ---------- */
.skills-section{background:var(--ink-1);border-top:1px solid var(--line)}
.skills-top-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px 14px}
.skills-guide-link{font-size:15px;color:var(--muted);text-underline-offset:5px;margin-right:6px}
.skills-guide-link:hover{color:var(--text);text-decoration:underline}
.trial-main-cta{min-height:44px;padding:0 18px;font-size:15px;gap:16px}
.usage-main-cta{border:1px solid var(--line-strong);color:var(--text)}
.usage-main-cta:hover{border-color:var(--text)}
.trial-primary-cta{background:var(--accent);color:var(--accent-ink)}
.trial-primary-cta:hover{background:var(--accent-hover)}
.product-wordmark{font:800 clamp(52px,7.4vw,112px)/.95 var(--display);font-stretch:condensed;letter-spacing:-.02em}
.product-wordmark>span{font:400 20px var(--sans);color:var(--accent);vertical-align:top;margin-left:6px}
.skills-subtitle{font-size:clamp(20px,1.8vw,24px)!important;font-weight:500!important;letter-spacing:0!important;line-height:1.5!important;margin-top:22px;color:var(--text)}
.skills-intro{max-width:560px;margin-top:10px;font-size:16px;line-height:1.8;color:var(--muted)}
.skills-promise{max-width:300px;padding-left:20px;border-left:2px solid var(--accent)}
.skills-promise p{font-size:clamp(20px,1.8vw,26px);line-height:1.5;font-weight:600}
.skills-promise span{display:block;margin-top:10px;font:italic 16px var(--latin-serif);color:var(--muted)}

.skills-browser{display:grid;border:1px solid var(--line);background:var(--ink-0)}
.skill-tabs{display:flex;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--line)}
.skill-tabs::-webkit-scrollbar{display:none}
.skill-tabs button{position:relative;display:flex;align-items:center;gap:12px;flex:0 0 auto;min-height:56px;padding:0 18px;font-size:15px;color:var(--text-2);white-space:nowrap;text-align:left;transition:background-color .2s,color .2s}
.skill-tabs button>span{font:12px var(--mono);color:var(--muted);letter-spacing:.04em}
.skill-tabs button>i{display:none;margin-left:auto;font-style:normal;color:var(--accent)}
.skill-tabs button::before{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transition:transform .25s}
.skill-tabs button:hover{color:var(--text);background:var(--ink-2)}
.skill-tabs button[aria-selected=true]{color:var(--text);background:var(--ink-2)}
.skill-tabs button[aria-selected=true]>span{color:var(--accent)}
.skill-tabs button[aria-selected=true]::before{transform:none}

.skill-panel{position:relative;display:grid;grid-template-columns:minmax(0,1fr);background:var(--ink-2);overflow:hidden;isolation:isolate;min-width:0}
.skill-poster-art{position:relative;height:260px;overflow:hidden;pointer-events:none}
.skill-poster-art img{width:100%;height:100%;object-fit:cover;object-position:center 40%;filter:saturate(.75) brightness(.9)}
.skill-poster-art::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,var(--ink-2),#1a1e1b00 55%)}
#skill-art-title{position:absolute;z-index:1;right:20px;bottom:16px;font:800 clamp(30px,4vw,56px)/.92 var(--display);font-stretch:condensed;letter-spacing:-.01em;text-align:right;color:var(--text);text-shadow:0 2px 24px #000a}
.skill-poster-edition{position:absolute;z-index:2;right:20px;top:18px;font:12px var(--mono);letter-spacing:.14em;color:#ffffffb3}
.skill-code{display:block;margin:24px 22px 0;font:12px var(--mono);letter-spacing:.1em;color:var(--muted)}
.skill-panel-content{padding:14px 22px 26px}
.panel-overline{display:block;font-size:14px;color:var(--accent)}
.skill-panel h3{margin-top:12px;font-size:clamp(26px,2.6vw,40px);font-weight:600;line-height:1.3;letter-spacing:-.035em}
.skill-panel p{margin-top:16px;max-width:480px;font-size:16px;line-height:1.8;color:var(--text-2)}
.skill-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.skill-tags span{font-size:13px;padding:5px 12px;border:1px solid var(--line-strong);border-radius:999px;color:var(--text-2)}
.skill-poster-bottom{display:flex;flex-direction:column;gap:14px;margin:0 22px;padding:18px 0 22px;border-top:1px solid var(--line)}
.skill-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px 20px}
.skill-actions .button{min-height:46px}
.copy-button{display:inline-flex;align-items:center;gap:10px;min-height:44px;font-size:15px;color:var(--text-2);transition:color .2s}
.copy-button:hover:not(:disabled){color:var(--accent)}
.copy-button:disabled{opacity:.55}
.skill-meta{display:flex;flex-wrap:wrap;gap:6px 20px;font:13px var(--mono);color:var(--muted)}
.skill-meta a{border-bottom:1px solid var(--line-strong)}
.skill-meta a[href]:hover{color:var(--text);border-color:var(--text)}
.skill-meta a[aria-disabled=true]{opacity:.55}
.tool-utilities{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px 24px;margin-top:20px;font-size:14px;color:var(--muted)}
.tool-utilities>span{display:inline-flex;align-items:center;gap:10px}
.tool-utilities>div{display:flex;gap:24px}
.tool-utilities a:hover{color:var(--text)}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
@media(min-width:960px){
  .skills-browser{grid-template-columns:260px minmax(0,1fr)}
  .skill-tabs{flex-direction:column;border-bottom:0;border-right:1px solid var(--line);overflow:visible}
  .skill-tabs button{flex:1;min-height:60px;padding:0 22px;border-bottom:1px solid var(--line);font-size:16px}
  .skill-tabs button:last-child{border-bottom:0}
  .skill-tabs button::before{top:0;bottom:0;right:auto;width:3px;height:auto;transform:scaleY(0)}
  .skill-tabs button[aria-selected=true]::before{transform:none}
  .skill-tabs button[aria-selected=true]>i{display:block}
  .skill-panel{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);grid-template-rows:auto 1fr auto;min-height:540px}
  .skill-poster-art{grid-column:2;grid-row:1/3;height:auto;min-height:100%}
  .skill-poster-art img{mask-image:linear-gradient(90deg,transparent,#000 22%);-webkit-mask-image:linear-gradient(90deg,transparent,#000 22%)}
  .skill-poster-art::after{background:linear-gradient(0deg,var(--ink-2),#1a1e1b00 30%)}
  .skill-code{grid-column:1;grid-row:1;margin:34px 40px 0}
  .skill-panel-content{grid-column:1;grid-row:2;padding:18px 40px 32px}
  .skill-poster-bottom{grid-column:1/-1;grid-row:3;flex-direction:row;justify-content:space-between;align-items:center;margin:0 40px;padding:20px 0 24px}
  .skill-meta{flex-direction:column;align-items:flex-end;text-align:right}
}
@media(min-width:1280px){.skills-browser{grid-template-columns:300px minmax(0,1fr)}}
.skill-panel[data-poster=fiction] h3{font-family:var(--serif);letter-spacing:0}
.skill-panel[data-poster=fiction] #skill-art-title{font:italic 400 clamp(28px,3.2vw,46px)/1 var(--latin-serif)}
.skill-panel[data-poster=talkshow] #skill-art-title{color:#f3a172;transform:rotate(4deg)}
@media(prefers-reduced-motion:no-preference){.skill-poster-art img{animation:poster-in .5s ease-out both}}

/* ---------- 02 Academy (paper) ---------- */
.academy-section{padding-block:clamp(72px,9vw,128px)}
.academy-label{display:none}
.academy-top{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:24px;margin:clamp(36px,5vw,64px) 0 clamp(28px,4vw,48px)}
.academy-top p{margin-top:16px;max-width:560px;font-size:17px;line-height:1.85;color:var(--paper-muted)}
.academy-enter{display:inline-flex;align-items:center;gap:18px;min-height:48px;padding:0 20px;border:1px solid var(--paper-ink);font-size:15px;font-weight:600;white-space:nowrap;transition:background-color .2s,color .2s}
.academy-enter:hover{background:var(--paper-ink);color:var(--paper)}
.academy-courses{display:grid;gap:20px}
.academy-course{display:flex;flex-direction:column;min-width:0;background:var(--paper-2);border:1px solid var(--paper-line);transition:transform .3s,box-shadow .3s}
.academy-course:hover{transform:translateY(-4px);box-shadow:0 18px 40px #4a3a2418}
.academy-course img{width:100%;height:auto;aspect-ratio:2.4;object-fit:cover}
.academy-course-body{display:flex;flex-direction:column;flex:1;padding:24px}
.academy-course-meta{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font:12px var(--mono);letter-spacing:.06em;color:var(--paper-muted)}
.academy-course-meta span:first-child{color:var(--accent-deep)}
.academy-course h3{margin:18px 0 10px;font-size:clamp(22px,2vw,28px);font-weight:600;line-height:1.4;letter-spacing:-.02em}
.academy-course p{margin:0 0 24px;font-size:16px;line-height:1.85;color:var(--paper-muted)}
.academy-course-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;margin-top:auto;padding-top:18px;border-top:1px solid var(--paper-line)}
.academy-progress{font-size:14px;color:var(--paper-muted)}
.academy-course-bottom a{display:inline-flex;align-items:center;gap:16px;min-height:46px;padding:0 18px;background:var(--paper-ink);color:var(--paper);font-size:15px;font-weight:600;transition:background-color .2s}
.academy-course-bottom a:hover{background:var(--accent-deep)}
.academy-note{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px 24px;margin-top:28px;font-size:14px;line-height:1.8;color:var(--paper-muted)}
.academy-note a{color:var(--accent-deep);text-decoration:underline;text-underline-offset:4px}
@media(min-width:760px){.academy-courses{grid-template-columns:repeat(2,minmax(0,1fr))}.academy-course-body{padding:30px}}

/* ---------- 03 Learn (ink, posters) ---------- */
.learn{background:var(--ink-0)}
.course-grid{display:grid;gap:20px}
@media(min-width:900px){.course-grid{grid-template-columns:1fr 1fr;gap:24px}}
.course-card{position:relative;overflow:hidden;background:#b7afa3;color:#272823}
.course-poster{container-type:inline-size;transition:transform .35s}
.course-poster:hover{transform:translateY(-4px)}
.poster-sheet{position:relative;aspect-ratio:3/4;overflow:hidden}
.poster-artwork{width:100%;height:100%;object-fit:cover;transition:transform 1.2s cubic-bezier(.2,.7,.2,1)}
.course-poster:hover .poster-artwork{transform:scale(1.03)}
.poster-layout{position:absolute;inset:0;padding:6.2%;color:#242820}
.poster-brand-row{display:flex;justify-content:flex-end;min-height:32px}
.poster-edition{text-align:right;font-size:12px;line-height:1.6}
.poster-discipline{font-size:12px;letter-spacing:.06em;color:#535044}
.poster-title-block h3{margin-top:1.5%;font-size:clamp(36px,9.2cqi,72px);font-weight:650;line-height:1.13;letter-spacing:-.07em}
.poster-title-block h3>span{color:#a94820}
.poster-title-block p{margin-top:2%;max-width:96%;font-size:clamp(15px,2.1cqi,17px);line-height:1.6;color:#474237}
.poster-side-note{position:absolute;left:2%;top:48%;writing-mode:vertical-rl;padding:8px 5px;background:#b7afa3e8;font-size:12px;letter-spacing:.06em;color:#393a32}
.poster-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;padding:22px 6.2%;border-top:1px solid #898274;background:#b7afa3;color:#292922}
.poster-footer>div{display:flex;flex-direction:column;gap:6px}
.poster-footer strong{font-size:17px;font-weight:600}
.poster-status{display:inline-block;margin-left:8px;padding:1px 8px;border:1px solid #6f6a5c;border-radius:999px;font-size:12px;font-style:normal;font-weight:500;vertical-align:2px;color:#3d3c33}
.poster-footer>div>span{font-size:14px;color:#4c4c43}
.poster-cta{display:inline-flex;align-items:center;gap:16px;min-height:46px;padding:0 18px;background:#242820;color:#efebe1;font-size:15px;font-weight:600;white-space:nowrap;transition:background-color .2s}
.poster-cta:hover{background:var(--accent-deep)}
.poster-cta>span{font-size:18px;transition:transform .2s}
.poster-cta:hover>span{transform:translate(3px,-3px)}
.film-concept .poster-brand-row{justify-content:space-between;align-items:flex-start;padding-bottom:3%;border-bottom:1px solid #42453a70}
.film-concept .poster-brand-row::before{content:"↗";font-size:36px;line-height:1;color:#242820}
.film-concept .poster-title-block{margin-top:4.5%}
.film-concept .poster-title-block h3{margin-top:2.5%;font-size:clamp(38px,9cqi,72px);letter-spacing:-.065em}
.film-concept .poster-title-block h3>span{display:block;color:#242820}
.film-concept .film-title-second{margin-left:14%;font-size:1.13em;white-space:nowrap}
.film-concept .film-title-second strong{position:relative;font-weight:650}
.film-concept .film-title-second strong::after{content:"";position:absolute;left:0;right:.2em;bottom:-.04em;height:3px;background:var(--accent)}
.film-concept .poster-title-block p{margin-top:4%;color:#35392f}
.film-concept .poster-side-note{writing-mode:horizontal-tb;left:6.2%;top:auto;bottom:4%;padding:7px 10px;border-left:2px solid var(--accent);color:#242820}
@media(max-width:599px){.film-concept .poster-title-block h3{font-size:clamp(32px,9cqi,54px)}.film-concept .poster-brand-row::before{font-size:28px}}

/* ---------- 04 Research (paper) ---------- */
.research-layout{display:grid;gap:44px;margin-top:clamp(36px,5vw,64px);align-items:start}
@media(min-width:960px){.research-layout{grid-template-columns:.85fr 1.15fr;gap:72px}}
.research-intro{min-width:0}
.theory-badge{display:inline-flex;align-items:center;gap:10px;font-size:12px;color:var(--accent-deep)}
.theory-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent-deep)}
.research-intro h2{margin-top:22px}
.research-intro h2 em{font-style:normal;color:var(--accent-deep)}
.research-thesis{margin-top:24px;display:grid;gap:20px}
.research-thesis p{max-width:460px;font-size:17px;line-height:1.85;color:var(--paper-muted)}
.research-theories{display:grid;gap:0;list-style:none;margin:0;padding:0;border-top:1px solid var(--paper-line)}
.research-theories li{display:grid;grid-template-columns:72px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid var(--paper-line);font-size:16px;line-height:1.6;color:#3b4037}
.research-theories b{font:500 14px/1.6 var(--mono);color:var(--accent-deep);padding-top:2px}
.research-monogram{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:32px}
.tesc-word{font:800 clamp(72px,8vw,120px)/.86 var(--display);font-stretch:condensed;letter-spacing:-.02em;color:var(--paper-ink)}
.research-monogram-note{color:var(--paper-muted);font-size:12px}
.theory-caption{margin-top:12px;font-size:15px;color:var(--paper-muted)}
.underlined-link{display:inline-flex;align-items:center;gap:28px;min-height:46px;margin-top:20px;padding:0 18px;border:1px solid var(--paper-ink);font-size:15px;font-weight:600;transition:background-color .2s,color .2s}
.underlined-link:hover{background:var(--paper-ink);color:var(--paper)}

.research-demo{position:relative;min-width:0;background:var(--paper-2);border:1px solid var(--paper-line);box-shadow:0 24px 60px #4a3a241a}
.research-demo::before{content:"";position:absolute;top:-1px;left:-1px;width:64px;height:3px;background:var(--accent)}
.demo-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;padding:18px 24px;border-bottom:1px solid var(--paper-line)}
.demo-top .mono{font-size:12px;color:var(--paper-muted)}
.demo-tag{font-size:13px;padding:3px 10px;border:1px solid var(--paper-line);border-radius:999px;color:var(--paper-muted)}
.scene-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:26px 24px 18px}
.scene-title{font-size:18px;font-weight:600;line-height:1.6}
.scene-title>.mono{display:block;margin-bottom:6px;font-size:12px;font-weight:400;color:var(--paper-muted)}
.scene-mark{font-size:40px;line-height:1;font-weight:300;color:var(--accent-deep)}
.scene-text{margin:0 24px 24px;font:18px/2.05 var(--serif);color:#5a5f53;counter-reset:line}
.scene-text p{position:relative;margin:8px 0;padding-left:34px;counter-increment:line}
.scene-text p::before{content:"0" counter(line);position:absolute;left:0;top:3px;font:12px/2.4 var(--mono);color:#a29a88}
.text-evidence{font:inherit;line-height:1.9;text-align:left;color:#2c3128;border-bottom:1px dashed #a39b88;transition:background-color .2s,color .2s}
.text-evidence:hover{background:#ef7a3a14}
.text-evidence[aria-pressed=true]{color:var(--accent-deep);background:#ef7a3a1f;border-color:var(--accent-deep);box-shadow:-4px 0 0 #ef7a3a1f,4px 0 0 #ef7a3a1f}
.evidence-tabs{display:flex;gap:16px;padding:0 24px;border-top:1px solid var(--paper-line);overflow-x:auto}
.evidence-tabs button{flex:1;min-height:52px;font-size:14px;white-space:nowrap;color:var(--paper-muted);border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.evidence-tabs button:hover{color:var(--paper-ink)}
.evidence-tabs button[aria-pressed=true]{color:var(--accent-deep);border-color:var(--accent-deep)}
.evidence-result{display:flex;gap:16px;min-height:140px;padding:22px 24px;background:#ebe3d3;border-top:1px solid var(--paper-line)}
.evidence-symbol{font-size:24px;color:var(--accent-deep)}
.evidence-result strong{font-size:16px;font-weight:600;color:var(--paper-ink)}
.evidence-result p{margin-top:6px;font-size:16px;line-height:1.85;color:var(--paper-muted)}
.demo-footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:14px 24px;font-size:14px;color:var(--paper-muted);border-top:1px solid var(--paper-line)}
.demo-footer .mono{display:none;font-size:12px}
@media(min-width:600px){.demo-footer .mono{display:inline}}
@media(min-width:960px){.demo-top{padding:20px 30px}.scene-heading{margin:30px 30px 20px}.scene-text{margin-inline:30px}.evidence-tabs{padding-inline:30px}.evidence-result{padding:24px 30px}.demo-footer{padding:16px 30px}}

/* ---------- 05 Community ---------- */
.community-section{background:var(--ink-0);overflow:hidden}
.community-layout{display:flex;flex-direction:column;align-items:center;gap:48px;margin-top:clamp(40px,6vw,80px)}
.community-emblem{position:relative;flex-shrink:0;width:280px;height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center}
.orbit{position:absolute;border:1px solid var(--line-strong);border-radius:50%}
.orbit-one{inset:10px -15px;animation:orbit 40s linear infinite}
.orbit-two{inset:48px -27px;border-color:#ef7a3a40;transform:rotate(-32deg)}
.community-logo{position:relative;z-index:1;width:94%;height:auto}
.community-brand-name{margin-top:22px;padding-left:.35em;font-size:22px;letter-spacing:.35em;color:var(--accent)}
.emblem-top,.emblem-bottom{position:absolute;max-width:100%;font-size:11px;text-align:center;color:var(--muted)}
.emblem-top{top:36px}.emblem-bottom{bottom:36px}
.community-copy{text-align:center}
.community-copy h2 .muted{color:var(--muted)}
.community-copy>p{margin-top:22px;font-size:17px;line-height:1.9;color:var(--text-2)}
.community-copy .button{margin-top:30px}
@media(min-width:900px){
  .community-layout{flex-direction:row;justify-content:center;gap:clamp(80px,10vw,160px)}
  .community-copy{text-align:left}
  .community-emblem{width:360px;height:360px}
  .community-logo{width:110%}
  .community-brand-name{font-size:26px}
  .orbit-one{inset:10px -30px}.orbit-two{inset:55px -48px}
}

/* ---------- Footer ---------- */
footer{background:var(--ink-0);border-top:1px solid var(--line)}
.footer-bottom{display:flex;flex-direction:column;gap:16px;padding-block:24px;font-size:14px;color:var(--muted)}
.footer-bottom>div{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.footer-bottom a:hover{color:var(--text)}
.back-top{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line-strong);border-radius:50%;font-size:18px}
@media(min-width:720px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center}}

/* ---------- Dialog & toast ---------- */
dialog{width:min(560px,calc(100% - 32px));max-height:85vh;overflow:auto;padding:36px;border:0;background:var(--paper);color:var(--paper-ink);box-shadow:0 30px 120px #000a}
dialog::backdrop{background:#0c0e0dcc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.dialog-close{position:absolute;right:12px;top:10px;width:44px;height:44px;font-size:28px;color:var(--paper-muted)}
.dialog-eyebrow{display:block;margin:6px 0 18px;font-size:12px;color:var(--accent-deep)}
dialog h2{margin-bottom:20px;font-size:28px;font-weight:600;line-height:1.4}
#dialog-content{font-size:16px;line-height:1.9;color:var(--paper-muted)}
#dialog-content p+p{margin-top:14px}
#dialog-content ul{padding-left:20px}
#dialog-content .notice{margin-top:22px;padding:12px 16px;font-size:14px;background:#ebe1cf}
dialog .button{margin-top:28px}
dialog button:focus-visible,dialog a:focus-visible{outline-color:var(--accent-deep)}
#toast{position:fixed;left:50%;bottom:28px;z-index:100;width:max-content;max-width:calc(100% - 32px);padding:14px 22px;font-size:14px;line-height:1.6;background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 30px #0005;opacity:0;transform:translate(-50%,16px);transition:opacity .2s,transform .2s;pointer-events:none}
#toast.visible{opacity:1;transform:translate(-50%,0)}

/* ---------- Motion ---------- */
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes hint-bob{0%,100%{transform:none}50%{transform:translateY(3px)}}
@keyframes poster-in{from{opacity:.35;transform:scale(1.03)}to{opacity:1;transform:none}}
@keyframes orbit{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .world-word svg{stroke-dashoffset:0}
}