/* =====================================================================
   PARTICIPATORY CREATION STUDIES — 参与式创作研究
   Swiss International Typographic Style
   Müller-Brockmann grid · ink / paper / signal-red · grotesque type
   ===================================================================== */

/* ----------  TOKENS  ---------- */
:root{
  --paper:#F2EEE3;
  --paper-2:#E8E2D2;
  --ink:#14110C;
  --ink-70:rgba(20,17,12,.70);
  --ink-45:rgba(20,17,12,.45);
  --ink-12:rgba(20,17,12,.12);
  --ink-06:rgba(20,17,12,.06);
  --red:#E0291B;
  --red-dim:#B71F13;
  --paper-rgb:242,238,227;

  --gutter:clamp(16px,3.2vw,40px);
  --col:minmax(0,1fr);
  --rule:1px solid var(--ink);
  --hair:1px solid var(--ink-12);

  --f-grotesk:'Archivo','Noto Sans SC',system-ui,sans-serif;
  --f-mono:'Space Mono','Noto Sans SC',ui-monospace,monospace;
  --f-cjk:'Noto Sans SC','Archivo',sans-serif;

  --step:clamp(.78rem,.55vw + .68rem,.95rem);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-grotesk);
  font-size:var(--step);
  line-height:1.5;
  font-feature-settings:"ss01","cv01";
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* faint baseline-grid texture over the whole page */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    repeating-linear-gradient(to bottom,transparent 0 39px,var(--ink-06) 39px 40px);
  mix-blend-mode:multiply;opacity:.5;
}
/* grain */
body::after{
  content:"";position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection{background:var(--red);color:var(--paper)}

a{color:inherit;text-decoration:none}

/* ----------  LAYOUT PRIMITIVES  ---------- */
.shell{position:relative;z-index:2;max-width:1500px;margin:0 auto;padding:0 var(--gutter)}
.grid12{display:grid;grid-template-columns:repeat(12,var(--col));gap:0 var(--gutter)}

.kicker{
  font-family:var(--f-mono);
  font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;
  font-weight:700;
}
.num-tag{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.1em}

/* ----------  TOP BAR  ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(var(--paper-rgb),.86);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:var(--rule);
}
.topbar .shell{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;
  height:46px;gap:var(--gutter);
}
.brandmark{display:flex;align-items:baseline;gap:.6ch;font-weight:800;letter-spacing:-.01em}
.brandmark .sq{width:11px;height:11px;background:var(--red);display:inline-block;translate:0 -1px}
.brandmark b{font-size:.92rem}
.brandmark span{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;color:var(--ink-45);text-transform:uppercase}
.topnav{justify-self:end;display:flex;gap:1.6ch;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase}
.topnav a{position:relative;padding:.2em 0;color:var(--ink-70);transition:color .25s}
.topnav a:hover{color:var(--ink)}
.topnav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--red);transition:width .28s cubic-bezier(.2,.7,.2,1)}
.topnav a:hover::after{width:100%}
.topclock{justify-self:center;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;color:var(--ink-45)}
@media(max-width:720px){.topnav{display:none}.topclock{display:none}.topbar .shell{grid-template-columns:1fr auto}}

/* ----------  HERO  ---------- */
.hero{padding-top:46px;border-bottom:var(--rule)}
.hero-meta{
  display:grid;grid-template-columns:repeat(12,var(--col));gap:0 var(--gutter);
  border-bottom:var(--hair);padding:10px 0;
  font-family:var(--f-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-70);
}
.hero-meta>div{grid-column:span 3}
.hero-meta>div:last-child{text-align:right}
@media(max-width:720px){.hero-meta>div{grid-column:span 6}.hero-meta>div:nth-child(3),.hero-meta>div:nth-child(2){display:none}}

.hero-main{padding:clamp(28px,5vw,70px) 0 clamp(24px,3vw,40px)}
.display{
  font-family:var(--f-grotesk);
  font-weight:900;
  line-height:.86;
  letter-spacing:-.025em;
  text-transform:uppercase;
  font-size:clamp(3.1rem,13.2vw,12.5rem);
}
.display .ln{display:block;overflow:hidden}
.display .ln>span{display:block;transform:translateY(110%);will-change:transform}
.display .red{color:var(--red)}
.display .outline{
  color:transparent;-webkit-text-stroke:clamp(1px,.18vw,2.5px) var(--ink);
}
/* CJK masthead variant — squarer metrics, looser tracking, taller line */
.display.cjk{font-family:var(--f-cjk);line-height:.94;letter-spacing:.04em;font-weight:900}
.display.cjk .ln>span{padding-bottom:.04em}
.hero-en{
  margin-top:clamp(14px,1.6vw,22px);
  font-family:var(--f-cjk);font-weight:500;font-size:clamp(.82rem,1.1vw,1.05rem);
  letter-spacing:.14em;color:var(--ink-70);
}
.hero-en b{color:var(--red);font-weight:700}

.hero-sub{
  margin-top:clamp(22px,3vw,40px);
  display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter);align-items:end;
}
.hero-cn{grid-column:1 / 7;font-family:var(--f-cjk);font-weight:700;font-size:clamp(1.4rem,3vw,2.5rem);letter-spacing:.04em;line-height:1.15}
.hero-cn em{font-style:normal;color:var(--red)}
.hero-lede{grid-column:8 / 13;font-size:clamp(.95rem,1vw,1.08rem);line-height:1.55;color:var(--ink-70);max-width:42ch;border-left:var(--rule);padding-left:18px}
@media(max-width:860px){.hero-cn{grid-column:1/13}.hero-lede{grid-column:1/13;border-left:none;border-top:var(--rule);padding-left:0;padding-top:14px;max-width:none}}

.hero-tagline{
  margin-top:clamp(26px,3.4vw,46px);
  border-top:var(--rule);border-bottom:var(--rule);
  display:flex;align-items:stretch;
}
.hero-tagline .cell{padding:14px var(--gutter) 14px 0;border-right:var(--hair)}
.hero-tagline .cell:last-child{border-right:none;padding-right:0;margin-left:auto;text-align:right}
.hero-tagline .big{font-weight:800;font-size:clamp(1rem,1.6vw,1.5rem);letter-spacing:-.01em}
.hero-tagline .lab{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-45);display:block;margin-bottom:4px}
.marq-mini{overflow:hidden;white-space:nowrap;flex:1;align-self:center;padding:0 var(--gutter)}
.marq-mini span{display:inline-block;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;color:var(--red);animation:slide 22s linear infinite}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media(max-width:720px){.hero-tagline{flex-direction:column}.hero-tagline .cell{border-right:none;border-bottom:var(--hair);padding-right:0}.hero-tagline .cell:last-child{text-align:left;margin-left:0}.marq-mini{display:none}}

/* ----------  SECTION SCAFFOLD  ---------- */
.section{border-bottom:var(--rule);padding:clamp(46px,6vw,96px) 0}
.sec-head{
  display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter);
  align-items:baseline;margin-bottom:clamp(30px,4vw,56px);
}
.sec-idx{grid-column:span 2;font-family:var(--f-mono);font-weight:700;color:var(--red);font-size:.8rem;letter-spacing:.06em}
.sec-title{grid-column:3 / 9;font-weight:900;font-size:clamp(1.7rem,3.4vw,3rem);line-height:1;letter-spacing:-.02em;text-transform:uppercase}
.sec-title .cn{display:block;font-family:var(--f-cjk);font-weight:500;font-size:.42em;letter-spacing:.06em;color:var(--ink-70);margin-top:.5em;text-transform:none}
.sec-note{grid-column:9 / 13;font-size:.92rem;color:var(--ink-70);line-height:1.55;align-self:end}
@media(max-width:860px){.sec-idx{grid-column:1/13;margin-bottom:8px}.sec-title{grid-column:1/13}.sec-note{grid-column:1/13;margin-top:14px}}

/* ----------  MANIFESTO / BELIEFS  ---------- */
.beliefs{display:grid;grid-template-columns:repeat(12,var(--col));gap:0 var(--gutter);border-top:var(--rule)}
.belief{
  grid-column:span 6;padding:clamp(26px,3vw,44px) 0;
  border-bottom:var(--hair);position:relative;
  display:grid;grid-template-columns:1.4fr 1fr;gap:var(--gutter);
}
.belief:nth-child(odd){padding-right:var(--gutter);border-right:var(--rule)}
.belief:nth-child(even){padding-left:var(--gutter)}
.belief .b-no{font-family:var(--f-mono);font-size:.72rem;color:var(--red);letter-spacing:.1em}
.belief h3{font-weight:900;font-size:clamp(1.3rem,2.1vw,2rem);line-height:1.02;letter-spacing:-.015em;margin:.3em 0 .1em;text-transform:uppercase}
.belief h3 .cn{display:block;font-family:var(--f-cjk);font-weight:700;font-size:.5em;letter-spacing:.04em;color:var(--ink);margin-top:.55em;text-transform:none}
.belief p{font-size:.93rem;line-height:1.62;color:var(--ink-70)}
.belief .b-body{align-self:center}
@media(max-width:860px){
  .belief,.belief:nth-child(odd){grid-column:1/13;grid-template-columns:1fr;border-right:none;padding-left:0;padding-right:0}
}

/* ----------  RIGHT (FEATURE SPREAD)  ---------- */
.rtp{background:var(--ink);color:var(--paper);border-bottom:var(--rule)}
.rtp::selection,.rtp ::selection{background:var(--paper);color:var(--ink)}
.rtp .shell{padding:clamp(50px,6vw,110px) var(--gutter)}
.rtp-grid{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter)}
.rtp-lead{grid-column:1 / 8}
.rtp-tag{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--red)}
.rtp-lead h2{font-weight:900;font-size:clamp(2rem,5vw,4.6rem);line-height:.92;letter-spacing:-.025em;margin:.35em 0;text-transform:uppercase}
.rtp-lead .cn{font-family:var(--f-cjk);font-weight:700;font-size:clamp(1.1rem,1.8vw,1.6rem);color:rgba(242,238,227,.8);letter-spacing:.05em}
.rtp-claims{grid-column:8 / 13;border-left:1px solid rgba(242,238,227,.25);padding-left:24px;align-self:center}
.rtp-claims li{list-style:none;padding:14px 0;border-bottom:1px solid rgba(242,238,227,.16);display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:baseline;font-size:.96rem;line-height:1.45}
.rtp-claims li:last-child{border-bottom:none}
.rtp-claims .ci{font-family:var(--f-mono);color:var(--red);font-size:.78rem}
.rtp-foot{grid-column:1/13;margin-top:34px;border-top:1px solid rgba(242,238,227,.25);padding-top:18px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:.88rem;color:rgba(242,238,227,.7);font-family:var(--f-mono);letter-spacing:.04em}
@media(max-width:860px){.rtp-lead,.rtp-claims{grid-column:1/13}.rtp-claims{border-left:none;padding-left:0;border-top:1px solid rgba(242,238,227,.25);padding-top:20px;margin-top:8px}}

/* ----------  LIBRARY  ---------- */
.lib-docs{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter);margin-bottom:clamp(40px,5vw,72px)}
.doc-card{
  grid-column:span 6;border:var(--rule);background:var(--paper);
  display:flex;flex-direction:column;min-height:300px;
  transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s;
  cursor:pointer;position:relative;overflow:hidden;
}
.doc-card:hover{transform:translate(-4px,-4px);box-shadow:8px 8px 0 var(--ink)}
.doc-card .dc-top{display:flex;justify-content:space-between;align-items:flex-start;padding:18px 20px;border-bottom:var(--rule)}
.doc-card .dc-type{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--red);font-weight:700}
.doc-card .dc-fmt{font-family:var(--f-mono);font-size:.66rem;color:var(--ink-45);letter-spacing:.08em}
.doc-card .dc-body{padding:20px;flex:1;display:flex;flex-direction:column}
.doc-card h3{font-weight:900;font-size:clamp(1.5rem,2.4vw,2.2rem);line-height:.98;letter-spacing:-.02em}
.doc-card .dc-en{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;color:var(--ink-45);margin-top:8px;text-transform:uppercase}
.doc-card .dc-desc{margin-top:auto;padding-top:18px;font-size:.9rem;color:var(--ink-70);line-height:1.55}
.doc-card .dc-cta{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-top:var(--rule);font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;font-weight:700}
.doc-card .dc-cta .arrow{transition:transform .3s}
.doc-card:hover .dc-cta .arrow{transform:translateX(6px)}
.doc-card .dc-stat{display:flex;gap:18px;padding:0 20px 18px;font-family:var(--f-mono);font-size:.68rem;color:var(--ink-45);letter-spacing:.06em}
.doc-card .dc-stat b{color:var(--ink);font-weight:700}
@media(max-width:760px){.doc-card{grid-column:1/13;min-height:0}}
/* coming-soon card — muted, no lift, dashed frame */
.doc-card.is-soon{cursor:default;border-style:dashed;background:repeating-linear-gradient(135deg,var(--paper) 0 9px,var(--paper-2) 9px 10px)}
.doc-card.is-soon:hover{transform:none;box-shadow:none}
.doc-card.is-soon h3,.doc-card.is-soon .dc-desc,.doc-card.is-soon .dc-stat,.doc-card.is-soon .dc-en{color:var(--ink-45)}
.doc-card.is-soon .dc-stat b{color:var(--ink-45)}
.doc-card.is-soon .dc-cta{color:var(--ink-45)}
.doc-card.is-soon .dc-cta .arrow{animation:spin 4.5s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.soon-tag{color:var(--red)!important;font-weight:700;border:1px solid var(--red);padding:2px 7px;border-radius:0}

.toc-head{display:flex;justify-content:space-between;align-items:baseline;border-top:var(--rule);border-bottom:var(--hair);padding:10px 0;margin-bottom:0}
.toc-head .kicker{color:var(--ink-70)}
.toc-list{border-bottom:var(--rule)}
.chap{
  display:grid;grid-template-columns:64px 1fr 1fr auto;gap:var(--gutter);align-items:center;
  padding:18px 0;border-bottom:var(--hair);cursor:pointer;
  transition:background .25s,padding-left .3s;position:relative;
}
.chap::before{content:"";position:absolute;left:0;top:0;bottom:0;width:0;background:var(--red);transition:width .28s cubic-bezier(.2,.7,.2,1)}
.chap:hover{background:var(--ink);color:var(--paper);padding-left:16px}
.chap:hover::before{width:6px}
.chap:hover .ch-q,.chap:hover .ch-pg{color:rgba(242,238,227,.65)}
.chap:hover .ch-no{color:var(--paper)}
.ch-no{font-family:var(--f-mono);font-weight:700;font-size:1.1rem;color:var(--red);letter-spacing:.02em}
.ch-title{font-weight:800;font-size:clamp(1rem,1.5vw,1.3rem);letter-spacing:-.01em;font-family:var(--f-cjk)}
.ch-q{font-size:.86rem;color:var(--ink-70);line-height:1.4}
.ch-pg{font-family:var(--f-mono);font-size:.74rem;color:var(--ink-45);letter-spacing:.06em;white-space:nowrap;text-align:right}
@media(max-width:860px){
  .chap{grid-template-columns:46px 1fr auto;gap:14px}
  .ch-q{display:none}
}

/* ----------  METHOD  ---------- */
.method-grid{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter)}
.method-lead{grid-column:1 / 6;font-weight:800;font-size:clamp(1.3rem,2vw,1.9rem);line-height:1.18;letter-spacing:-.01em}
.method-lead em{font-style:normal;color:var(--red)}
.method-cols{grid-column:6 / 13;display:grid;grid-template-columns:1fr 1fr;gap:var(--gutter)}
.method-cols .mcol h4{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--red);border-bottom:var(--rule);padding-bottom:8px;margin-bottom:12px}
.method-cols .mcol p{font-size:.9rem;color:var(--ink-70);line-height:1.6;margin-bottom:12px}
.method-cols .mcol .neg{color:var(--ink);font-weight:600}
@media(max-width:860px){.method-lead{grid-column:1/13;margin-bottom:24px}.method-cols{grid-column:1/13}}
@media(max-width:560px){.method-cols{grid-template-columns:1fr}}

/* ----------  ALGORITHM / GATEKEEPING  ---------- */
.algo-grid{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter)}
.algo-lead{grid-column:1 / 6}
.algo-big{font-weight:800;font-size:clamp(1.35rem,2.1vw,2rem);line-height:1.22;letter-spacing:-.01em}
.algo-big em{font-style:normal;color:var(--red)}
.algo-sub{margin-top:18px;font-size:.95rem;line-height:1.62;color:var(--ink-70);max-width:42ch}
.algo-list{grid-column:7 / 13;border-top:var(--rule)}
.algo-list li{
  list-style:none;display:grid;grid-template-columns:auto 1fr;gap:var(--gutter);align-items:start;
  padding:20px 0;border-bottom:var(--hair);
}
.algo-list .ai{font-family:var(--f-mono);font-weight:700;font-size:1.05rem;color:var(--red);letter-spacing:.02em}
.algo-list li>div{display:flex;flex-direction:column;gap:6px}
.algo-list b{font-size:clamp(1rem,1.4vw,1.25rem);font-weight:800;letter-spacing:-.01em;font-family:var(--f-cjk)}
.algo-list span:not(.ai){font-size:.92rem;line-height:1.55;color:var(--ink-70)}
@media(max-width:860px){.algo-lead{grid-column:1/13}.algo-list{grid-column:1/13;margin-top:30px}}

.algo-foot{
  margin-top:clamp(34px,4vw,56px);border-top:var(--rule);padding-top:24px;
  display:grid;grid-template-columns:auto 1fr;gap:var(--gutter);align-items:baseline;
}
.algo-foot .af-mark{font-weight:900;font-size:clamp(2rem,5vw,4rem);color:var(--red);line-height:.8}
.algo-foot p{font-weight:700;font-size:clamp(1.1rem,1.9vw,1.75rem);line-height:1.25;letter-spacing:-.01em;max-width:24ch}
@media(max-width:560px){.algo-foot{grid-template-columns:1fr}.algo-foot .af-mark{display:none}}

/* ----------  ABM / EVOLUTIONARY MODEL  ---------- */
.abm-top{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter);margin-bottom:clamp(32px,4vw,52px)}
.abm-lead{grid-column:1/7;font-weight:800;font-size:clamp(1.3rem,2vw,1.9rem);line-height:1.3;letter-spacing:-.01em}
.abm-lead em{font-style:normal;color:var(--red)}
.abm-sub{margin-top:18px;font-size:.95rem;line-height:1.6;color:var(--ink-70);font-weight:400;max-width:46ch}
.abm-spec{grid-column:8/13;border:var(--rule);align-self:start}
.abm-spec .sp-h{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:var(--rule);font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;font-weight:700}
.abm-spec .sp-h .dot{width:8px;height:8px;background:var(--red);border-radius:50%}
.sp-row{display:grid;grid-template-columns:auto 1fr;gap:14px;padding:11px 16px;border-bottom:var(--hair);font-family:var(--f-mono);font-size:.73rem;align-items:baseline}
.sp-row:last-child{border-bottom:none}
.sp-row .k{color:var(--red);letter-spacing:.04em;white-space:nowrap}
.sp-row .v{color:var(--ink-70);text-align:right;line-height:1.4}
@media(max-width:860px){.abm-lead{grid-column:1/13}.abm-spec{grid-column:1/13;margin-top:24px}}

.abm-agents{display:grid;grid-template-columns:repeat(4,1fr);border-top:var(--rule);border-bottom:var(--rule)}
.abm-agent{padding:22px var(--gutter) 22px 0;border-right:var(--hair)}
.abm-agent:last-child{border-right:none;padding-right:0}
.abm-agent .ag-no{font-family:var(--f-mono);font-size:.7rem;color:var(--red);letter-spacing:.08em}
.abm-agent h4{font-weight:900;font-size:clamp(1.05rem,1.5vw,1.4rem);margin:.5em 0 .15em;letter-spacing:-.01em}
.abm-agent .ag-en{font-family:var(--f-mono);font-size:.6rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-45)}
.abm-agent p{margin-top:12px;font-size:.85rem;line-height:1.5;color:var(--ink-70)}
@media(max-width:760px){.abm-agents{grid-template-columns:1fr 1fr}.abm-agent{border-right:none;border-bottom:var(--hair);padding:18px 0}.abm-agent:nth-child(odd){border-right:var(--hair);padding-right:var(--gutter)}}
@media(max-width:460px){.abm-agents{grid-template-columns:1fr}.abm-agent:nth-child(odd){border-right:none;padding-right:0}}

.abm-foot{margin-top:clamp(32px,4vw,52px);display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter);align-items:stretch}
.abm-repo{grid-column:1/8;display:flex;align-items:center;gap:18px;border:var(--rule);background:var(--ink);color:var(--paper);padding:18px 22px;transition:transform .3s cubic-bezier(.2,.7,.2,1),box-shadow .3s}
.abm-repo:hover{transform:translate(-3px,-3px);box-shadow:6px 6px 0 var(--red)}
.abm-repo .rp-mark{font-family:var(--f-mono);font-weight:700;font-size:.66rem;letter-spacing:.12em;color:var(--red);white-space:nowrap}
.abm-repo .rp-name{font-weight:800;font-size:clamp(1rem,1.5vw,1.3rem);letter-spacing:-.01em;flex:1}
.abm-repo .rp-arrow{font-size:1.2rem}
.abm-run{grid-column:8/13;font-family:var(--f-mono);font-size:.82rem;color:var(--ink-70);border:var(--rule);padding:18px 20px;line-height:1.5;background:var(--paper-2);display:flex;flex-direction:column;justify-content:center}
.abm-run .rn-k{color:var(--ink-45);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:8px}
.abm-run code{color:var(--ink);font-weight:700;word-break:break-all}
@media(max-width:860px){.abm-repo,.abm-run{grid-column:1/13}.abm-run{margin-top:14px}}

/* ----------  PROTOCOL STACK (Protocol, Not Platform)  ---------- */
.proto-top{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter);margin-bottom:clamp(30px,3.5vw,48px)}
.proto-lead{grid-column:1/8;font-weight:800;font-size:clamp(1.3rem,2vw,1.9rem);line-height:1.3;letter-spacing:-.01em}
.proto-lead em{font-style:normal;color:var(--red)}
.proto-tags{grid-column:9/13;align-self:end;display:flex;flex-direction:column;gap:8px;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.04em;color:var(--ink-70)}
.proto-tags b{color:var(--red);font-weight:700}
@media(max-width:860px){.proto-lead{grid-column:1/13}.proto-tags{grid-column:1/13;margin-top:18px;flex-direction:row;flex-wrap:wrap;gap:8px 18px}}

.stack{border:var(--rule)}
.stack-row{display:grid;grid-template-columns:128px 1fr;border-bottom:var(--rule)}
.stack-row:last-child{border-bottom:none}
.sr-tag{background:var(--ink);color:var(--paper);display:flex;flex-direction:column;justify-content:center;gap:4px;padding:22px 18px;border-right:var(--rule)}
.stack-row.key .sr-tag{background:var(--red)}
.sr-tag .l{font-family:var(--f-mono);font-weight:700;font-size:1.5rem;letter-spacing:.04em;line-height:1}
.sr-tag .ll{font-family:var(--f-mono);font-size:.58rem;letter-spacing:.12em;text-transform:uppercase;opacity:.75}
.sr-body{padding:22px;display:grid;grid-template-columns:minmax(150px,1fr) 2fr;gap:var(--gutter);align-items:baseline}
.sr-h{font-weight:900;font-size:clamp(1.15rem,1.7vw,1.55rem);letter-spacing:-.01em;line-height:1.05}
.sr-h .en{display:block;font-family:var(--f-mono);font-weight:400;font-size:.62rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-45);margin-top:8px}
.sr-d{font-size:.95rem;line-height:1.6;color:var(--ink-70)}
@media(max-width:760px){
  .stack-row{grid-template-columns:84px 1fr}
  .sr-tag{padding:16px 12px}.sr-tag .l{font-size:1.2rem}
  .sr-body{grid-template-columns:1fr;gap:10px;padding:18px}
}

.proto-foot{margin-top:clamp(32px,4vw,52px);border-top:var(--rule);padding-top:24px;
  display:grid;grid-template-columns:auto 1fr;gap:var(--gutter);align-items:baseline}
.proto-foot .af-mark{font-weight:900;font-size:clamp(2rem,5vw,4rem);color:var(--red);line-height:.8}
.proto-foot p{font-weight:700;font-size:clamp(1.1rem,1.9vw,1.6rem);line-height:1.3;letter-spacing:-.01em;max-width:42ch}
.proto-foot em{font-style:normal;color:var(--red)}
@media(max-width:560px){.proto-foot{grid-template-columns:1fr}.proto-foot .af-mark{display:none}}

/* ----------  THEORY VIDEOS (Bilibili facade)  ---------- */
.vids{display:grid;grid-template-columns:1fr 1fr;gap:var(--gutter);border-top:var(--rule);padding-top:clamp(28px,3vw,42px)}
.vid-card{border:var(--rule);background:var(--paper);display:flex;flex-direction:column;
  transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s}
.vid-card:hover{transform:translate(-3px,-3px);box-shadow:7px 7px 0 var(--ink)}
.vid-top{display:flex;justify-content:space-between;align-items:center;padding:11px 16px;border-bottom:var(--rule);
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase}
.vid-top .ep{color:var(--red);font-weight:700}
.vid-top .ch{color:var(--ink-45)}
.vid-media{position:relative;aspect-ratio:16/9;background:var(--ink);overflow:hidden;cursor:pointer;outline-offset:-3px}
.vid-media iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}
.vid-facade{position:absolute;inset:0;display:flex;align-items:flex-end;padding:16px;color:var(--paper);
  background:radial-gradient(130% 90% at 72% 18%,rgba(224,41,27,.20),transparent 58%),linear-gradient(0deg,rgba(20,17,12,.5),rgba(20,17,12,.12));
  transition:background .3s}
.vid-media:hover .vid-facade{background:radial-gradient(130% 90% at 72% 18%,rgba(224,41,27,.32),transparent 58%),linear-gradient(0deg,rgba(20,17,12,.58),rgba(20,17,12,.18))}
.vf-hint{font-family:var(--f-mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;opacity:.85}
.vid-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:58px;height:58px;border-radius:50%;
  background:var(--red);display:flex;align-items:center;justify-content:center;transition:transform .3s,box-shadow .3s}
.vid-media:hover .vid-play{transform:translate(-50%,-50%) scale(1.09);box-shadow:0 0 0 6px rgba(224,41,27,.18)}
.vid-play::after{content:"";border-left:17px solid var(--paper);border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.vid-meta{padding:15px 16px;display:flex;flex-direction:column;gap:5px}
.vid-meta .vm-plat{font-family:var(--f-mono);font-size:.62rem;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-45)}
.vid-meta h4{font-weight:800;font-size:clamp(1rem,1.4vw,1.22rem);letter-spacing:-.01em;line-height:1.28}
@media(max-width:760px){.vids{grid-template-columns:1fr}.vid-card:hover{transform:none;box-shadow:none}}

/* ----------  ABM NETWORK VISUALIZATION  ---------- */
.abm-viz{border:var(--rule);margin-bottom:clamp(32px,4vw,52px);background:var(--paper)}
.viz-bar{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:12px 16px;border-bottom:var(--rule)}
.viz-title{font-weight:800;font-size:.95rem;letter-spacing:-.01em}
.viz-title small{font-family:var(--f-mono);font-weight:400;font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-45);margin-left:10px}
.viz-step{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.12em;color:var(--red);white-space:nowrap}
.viz-stage{position:relative;
  background-image:radial-gradient(var(--ink-12) 1px,transparent 1.4px);
  background-size:22px 22px;background-position:11px 11px}
.viz-stage svg{display:block;width:100%;height:auto}
.viz-legend{display:flex;flex-wrap:wrap;gap:14px 18px;padding:12px 16px;border-top:var(--rule);
  font-family:var(--f-mono);font-size:.62rem;letter-spacing:.04em;color:var(--ink-70);text-transform:uppercase}
.viz-legend span{display:inline-flex;align-items:center;gap:7px}
.viz-legend .lg{display:inline-block;flex:0 0 auto}
.lg.dot-c{width:7px;height:7px;border-radius:50%;background:var(--ink)}
.lg.dot-cr{width:11px;height:11px;border-radius:50%;background:var(--ink)}
.lg.dot-or{width:9px;height:9px;background:var(--ink)}
.lg.dot-of{width:12px;height:12px;border-radius:50%;border:2px solid var(--ink);background:transparent}
.lg.line{width:16px;height:1px;background:var(--ink-45)}
.lg.pulse{width:11px;height:11px;border-radius:50%;background:var(--red);box-shadow:0 0 0 3px rgba(224,41,27,.22)}
@media(max-width:560px){.viz-title small{display:none}.viz-legend{font-size:.56rem;gap:10px 14px}}

/* ----------  AI ERA (dark capstone)  ---------- */
.aiera{background:var(--ink);color:var(--paper)}
.aiera ::selection{background:var(--paper);color:var(--ink)}
.aiera .shell{padding:clamp(50px,6vw,104px) var(--gutter)}
.ai-head{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter);align-items:baseline;margin-bottom:clamp(32px,4vw,56px)}
.ai-tag{grid-column:1/3;font-family:var(--f-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--red)}
.ai-title{grid-column:3/9;font-weight:900;font-size:clamp(1.9rem,4.2vw,3.6rem);line-height:.96;letter-spacing:-.025em}
.ai-en{display:block;font-family:var(--f-mono);font-weight:400;font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(242,238,227,.45);margin-top:14px}
.ai-note{grid-column:9/13;font-size:.95rem;line-height:1.55;color:rgba(242,238,227,.6);align-self:end}
@media(max-width:860px){.ai-tag,.ai-title,.ai-note{grid-column:1/13}.ai-tag{margin-bottom:8px}.ai-note{margin-top:16px}}

.ai-body{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter)}
.ai-lead{grid-column:1/7;font-weight:800;font-size:clamp(1.3rem,2vw,1.9rem);line-height:1.32;letter-spacing:-.01em}
.ai-lead em{font-style:normal;color:var(--red)}
.ai-ledger{grid-column:7/13;display:flex;flex-direction:column;justify-content:center}
.ai-row{padding:22px 0;border-bottom:1px solid rgba(242,238,227,.18);display:grid;grid-template-columns:96px 1fr;gap:18px;align-items:baseline}
.ai-row:first-child{border-top:1px solid rgba(242,238,227,.18)}
.ai-k{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;white-space:nowrap}
.ai-row.down .ai-k,.ai-row.down .ai-v{color:rgba(242,238,227,.42)}
.ai-row.down .ai-v{font-size:1rem;line-height:1.5}
.ai-row.up .ai-k{color:var(--red)}
.ai-row.up .ai-v{color:var(--paper);font-weight:700;font-size:clamp(1.05rem,1.5vw,1.3rem);line-height:1.42}
@media(max-width:860px){.ai-lead,.ai-ledger{grid-column:1/13}.ai-ledger{margin-top:20px}}
@media(max-width:480px){.ai-row{grid-template-columns:1fr;gap:6px}}

.ai-foot{margin-top:clamp(38px,4vw,64px);border-top:1px solid rgba(242,238,227,.3);padding-top:26px;
  display:grid;grid-template-columns:auto 1fr;gap:var(--gutter);align-items:baseline}
.ai-foot .af-mark{font-weight:900;font-size:clamp(2rem,5vw,4rem);color:var(--red);line-height:.8}
.ai-foot p{font-weight:700;font-size:clamp(1.15rem,2vw,1.75rem);line-height:1.3;letter-spacing:-.01em;max-width:48ch}
.ai-foot em{font-style:normal;color:var(--red)}
@media(max-width:560px){.ai-foot{grid-template-columns:1fr}.ai-foot .af-mark{display:none}}

/* ----------  MYTH DEBUNK (Profit Is Not a Sin)  ---------- */
.myth-list{border-top:var(--rule)}
.myth-item{display:grid;grid-template-columns:64px 1fr;gap:var(--gutter);padding:24px 0;border-bottom:var(--hair)}
.m-no{font-family:var(--f-mono);font-weight:700;font-size:1.1rem;color:var(--red);letter-spacing:.02em}
.m-body{display:flex;flex-direction:column;gap:12px;max-width:66ch}
.m-claim{color:var(--ink-45);font-size:1rem;line-height:1.5}
.m-tag{display:inline-block;font-family:var(--f-mono);font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;
  background:var(--ink-12);color:var(--ink-70);padding:2px 8px;margin-right:10px;vertical-align:2px}
.m-ans{font-weight:700;font-size:clamp(1.05rem,1.5vw,1.35rem);line-height:1.42;letter-spacing:-.01em;
  border-left:2px solid var(--red);padding-left:16px}
@media(max-width:640px){
  .myth-item{grid-template-columns:40px 1fr;gap:14px;padding:20px 0}
  .m-ans{padding-left:12px}
}
.myth-foot{margin-top:clamp(34px,4vw,56px);border-top:var(--rule);padding-top:24px;
  display:grid;grid-template-columns:auto 1fr;gap:var(--gutter);align-items:baseline}
.myth-foot .af-mark{font-weight:900;font-size:clamp(2rem,5vw,4rem);color:var(--red);line-height:.8}
.myth-foot p{font-weight:700;font-size:clamp(1.1rem,1.9vw,1.6rem);line-height:1.3;letter-spacing:-.01em;max-width:40ch}
.myth-foot em{font-style:normal;color:var(--red)}
@media(max-width:560px){.myth-foot{grid-template-columns:1fr}.myth-foot .af-mark{display:none}}

/* ----------  VS COMPARISON (Doujin vs ACG Business)  ---------- */
.vs{border-top:var(--rule)}
.vs-row{display:grid;grid-template-columns:minmax(92px,1.5fr) 3fr 3fr;gap:var(--gutter);
  padding:18px 0;border-bottom:var(--hair);align-items:start}
.vs-label{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;color:var(--ink-45);text-transform:uppercase;padding-top:.15em}
.vs-a,.vs-b{font-size:.96rem;line-height:1.5}
.vs-a{padding-left:16px;border-left:2px solid var(--red);font-weight:500}
.vs-b{color:var(--ink-70)}
.vs-tag{display:none}
/* header row */
.vs-head{border-bottom:var(--rule);padding-bottom:16px;align-items:baseline}
.vs-head .vs-label{align-self:end}
.vs-head .vs-a,.vs-head .vs-b{font-family:var(--f-cjk);font-weight:900;font-size:clamp(1.25rem,2.3vw,2rem);letter-spacing:-.01em;line-height:1;color:var(--ink)}
.vs-head .vs-a{padding-left:16px;border-left:2px solid var(--red)}
.vs-head small{display:block;font-family:var(--f-mono);font-weight:400;font-size:.64rem;letter-spacing:.1em;color:var(--ink-45);text-transform:uppercase;margin-top:9px}
.vs-head .vs-b em{font-style:normal;color:var(--red);margin-right:.28em;font-size:1.05em}
/* foot */
.vs-foot{margin-top:clamp(34px,4vw,56px);border-top:var(--rule);padding-top:24px;
  display:grid;grid-template-columns:auto 1fr;gap:var(--gutter);align-items:baseline}
.vs-foot .af-mark{font-weight:900;font-size:clamp(2rem,5vw,4rem);color:var(--red);line-height:.8}
.vs-foot p{font-weight:700;font-size:clamp(1.1rem,1.9vw,1.75rem);line-height:1.25;letter-spacing:-.01em;max-width:30ch}
@media(max-width:760px){
  .vs-row{grid-template-columns:1fr;gap:6px;padding:16px 0}
  .vs-label{font-size:.66rem;color:var(--red);padding-top:0;margin-bottom:3px}
  .vs-a{border-left:none;padding-left:0}
  .vs-tag{display:inline-block;font-family:var(--f-mono);font-size:.6rem;letter-spacing:.06em;
    background:var(--ink);color:var(--paper);padding:1px 6px;margin-right:8px;vertical-align:2px}
  .vs-a .vs-tag{background:var(--red)}
  .vs-head{padding-bottom:10px}
  .vs-head .vs-a,.vs-head .vs-b{font-size:1.5rem;padding-left:0;border-left:none}
  .vs-head .vs-label{display:none}
  .vs-foot{grid-template-columns:1fr}
  .vs-foot .af-mark{display:none}
}

/* ----------  BANNER STRIP  ---------- */
.strip{background:var(--red);color:var(--paper);border-bottom:var(--rule);overflow:hidden}
.strip-track{display:flex;white-space:nowrap;animation:slide 28s linear infinite}
.strip-track span{font-weight:900;font-size:clamp(1.6rem,4vw,3.4rem);text-transform:uppercase;letter-spacing:-.01em;padding:18px 0}
.strip-track .dot{padding:0 .5em;color:var(--ink)}

/* ----------  FOOTER / COLOPHON  ---------- */
.foot{background:var(--ink);color:var(--paper)}
.foot .shell{padding:clamp(50px,6vw,90px) var(--gutter) 30px}
/* contact CTA */
.foot-contact{display:grid;grid-template-columns:1fr auto;gap:var(--gutter);align-items:center;
  padding-bottom:clamp(34px,4vw,52px);margin-bottom:clamp(34px,4vw,52px);border-bottom:1px solid rgba(242,238,227,.25)}
.fc-kicker{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--red)}
.fc-h{font-weight:900;font-size:clamp(1.6rem,3vw,2.6rem);line-height:1.04;letter-spacing:-.02em;margin:.45em 0 .4em}
.fc-d{font-size:.95rem;line-height:1.6;color:rgba(242,238,227,.7);max-width:46ch}
.fc-mail{display:flex;flex-direction:column;gap:8px;border:2px solid rgba(242,238,227,.5);padding:22px 28px;
  transition:background .3s,border-color .3s,transform .3s,box-shadow .3s;white-space:nowrap}
.fc-mail:hover{background:var(--red);border-color:var(--red);transform:translate(-3px,-3px);box-shadow:6px 6px 0 rgba(242,238,227,.25)}
.fc-mail .fc-mail-k{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--red)}
.fc-mail:hover .fc-mail-k{color:var(--paper)}
.fc-mail .fc-mail-addr{font-weight:800;font-size:clamp(1.05rem,1.6vw,1.45rem);letter-spacing:-.01em}
@media(max-width:760px){.foot-contact{grid-template-columns:1fr}.fc-mail{align-items:flex-start;margin-top:6px}}
.foot-top{display:grid;grid-template-columns:repeat(12,var(--col));gap:var(--gutter)}
.foot-brand{grid-column:1 / 6}
.foot-brand .big{font-weight:900;font-size:clamp(1.8rem,3vw,3rem);line-height:.95;letter-spacing:-.02em;text-transform:uppercase}
.foot-brand .cn{font-family:var(--f-cjk);color:rgba(242,238,227,.7);margin-top:10px;letter-spacing:.06em}
.foot-cols{grid-column:7 / 13;display:grid;grid-template-columns:1fr 1fr 1fr;gap:var(--gutter)}
.foot-cols h5{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--red);margin-bottom:14px}
.foot-cols a,.foot-cols p{display:block;color:rgba(242,238,227,.72);font-size:.9rem;padding:5px 0;transition:color .2s}
.foot-cols a:hover{color:var(--paper)}
.foot-rule{height:1px;background:rgba(242,238,227,.25);margin:40px 0 18px}
.foot-meta{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.06em;color:rgba(242,238,227,.5);text-transform:uppercase}
@media(max-width:860px){.foot-brand{grid-column:1/13}.foot-cols{grid-column:1/13;margin-top:30px}}
@media(max-width:560px){.foot-cols{grid-template-columns:1fr 1fr}}

/* ----------  PDF READER OVERLAY  ---------- */
.reader{position:fixed;inset:0;z-index:100;background:var(--paper);display:flex;flex-direction:column;
  animation:readerIn .4s cubic-bezier(.2,.7,.2,1)}
@keyframes readerIn{from{opacity:0;transform:translateY(2%)}to{opacity:1;transform:none}}
.reader[hidden]{display:none}
.reader-bar{display:flex;justify-content:space-between;align-items:center;gap:var(--gutter);
  height:54px;padding:0 var(--gutter);border-bottom:var(--rule);background:var(--paper);flex:0 0 auto}
.reader-bar .rb-left{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em;font-size:1rem;min-width:0}
.reader-bar .rb-left .sq{width:11px;height:11px;background:var(--red);flex:0 0 auto}
.reader-bar .rb-left span{font-family:var(--f-cjk);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.reader-bar .rb-right{display:flex;gap:8px;flex:0 0 auto}
.rb-btn{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;
  border:var(--rule);background:var(--paper);color:var(--ink);padding:8px 12px;cursor:pointer;
  transition:background .2s,color .2s}
.rb-btn:hover{background:var(--ink);color:var(--paper)}
.rb-close{border-color:var(--red);color:var(--red)}
.rb-close:hover{background:var(--red);color:var(--paper)}
#readerFrame{flex:1 1 auto;width:100%;border:none;background:var(--paper-2)}
@media(max-width:640px){
  .rb-btn{padding:7px 9px;font-size:.62rem}
  .reader-bar .rb-left span{max-width:38vw}
}

/* ----------  CONTACT MODAL  ---------- */
.modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:20px;
  background:rgba(20,17,12,.62);backdrop-filter:blur(3px);animation:mFade .25s ease}
.modal[hidden]{display:none}
@keyframes mFade{from{opacity:0}to{opacity:1}}
.modal-card{position:relative;width:min(560px,100%);max-height:92vh;overflow:auto;background:var(--paper);
  border:var(--rule);box-shadow:10px 10px 0 var(--red);animation:mPop .32s cubic-bezier(.2,.7,.2,1)}
@keyframes mPop{from{transform:translateY(14px) scale(.98);opacity:0}to{transform:none;opacity:1}}
.modal-bar{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:var(--rule);
  position:sticky;top:0;background:var(--paper);z-index:1}
.modal-bar span{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em}
.modal-bar .sq{width:11px;height:11px;background:var(--red);flex:0 0 auto}
.modal-x{border:var(--rule);background:var(--paper);font-family:var(--f-mono);font-size:.8rem;cursor:pointer;
  width:30px;height:30px;line-height:1;transition:background .2s,color .2s,border-color .2s}
.modal-x:hover{background:var(--red);color:var(--paper);border-color:var(--red)}
.cform{padding:22px 20px 24px;display:flex;flex-direction:column;gap:15px}
.cform-intro{font-size:.9rem;line-height:1.55;color:var(--ink-70)}
.cform label{display:flex;flex-direction:column;gap:7px;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-70)}
.cform input,.cform textarea{font-family:var(--f-grotesk);font-size:1rem;color:var(--ink);background:var(--paper-2);
  border:1px solid var(--ink-12);border-bottom:2px solid var(--ink);padding:11px 12px;width:100%;transition:border-color .2s}
.cform input:focus,.cform textarea:focus{outline:none;border-bottom-color:var(--red)}
.cform textarea{resize:vertical;min-height:112px;line-height:1.5}
.cf-hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0;pointer-events:none}
.cform-submit{margin-top:4px;align-self:flex-start;font-family:var(--f-mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;font-weight:700;
  background:var(--ink);color:var(--paper);border:none;padding:13px 26px;cursor:pointer;transition:background .25s,transform .25s}
.cform-submit:hover{background:var(--red);transform:translateX(3px)}
.cform-submit:disabled{opacity:.5;cursor:default;transform:none}
.cform-status{font-size:.88rem;line-height:1.5;min-height:1.2em;margin:0}
.cform-status.ok{color:var(--ink);font-weight:700}
.cform-status.err{color:var(--red);font-weight:700}

/* =====================================================================
   DADA / CONSTRUCTIVIST DECOR
   geometric planes · lines · halftone dots · bullseyes
   layered over the Swiss grid for energy. purely decorative.
   ===================================================================== */
.hero,.rtp,.aiera,.foot{position:relative;overflow:hidden}
.section.has-deco{position:relative;overflow:hidden}
.deco{position:absolute;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.hero>.shell,.rtp>.shell,.aiera>.shell,.foot>.shell,.section.has-deco>.shell{position:relative;z-index:2}

.d{position:absolute;display:block;will-change:transform}
/* concentric target / bullseye */
.d-target{border-radius:50%;background:repeating-radial-gradient(var(--ink) 0 1.5px,transparent 1.5px 8px);opacity:.5}
.d-target.red{background:repeating-radial-gradient(var(--red) 0 1.5px,transparent 1.5px 8px)}
.d-target.light{background:repeating-radial-gradient(rgba(242,238,227,.6) 0 1.5px,transparent 1.5px 8px)}
/* solid disc (geometric plane) */
.d-disc{border-radius:50%;background:var(--red)}
.d-disc.ink{background:var(--ink)}
/* ring */
.d-ring{border-radius:50%;border:2.5px solid var(--ink)}
.d-ring.red{border-color:var(--red)}
.d-ring.light{border-color:rgba(242,238,227,.5)}
/* triangle plane */
.d-tri{width:0;height:0;border-style:solid}
/* bar */
.d-bar{background:var(--red)}
.d-bar.ink{background:var(--ink)}
.d-bar.light{background:rgba(242,238,227,.55)}
/* halftone dot field (网点), clipped to circle by default */
.d-dots{border-radius:50%;background-image:radial-gradient(var(--ink) 1.7px,transparent 2px);background-size:12px 12px;opacity:.6}
.d-dots.red{background-image:radial-gradient(var(--red) 1.7px,transparent 2px)}
.d-dots.light{background-image:radial-gradient(rgba(242,238,227,.5) 1.7px,transparent 2px)}
.d-dots.sq{border-radius:0}
/* diagonal line */
.d-line{height:2px;background:var(--ink);transform-origin:left center}
.d-line.red{background:var(--red)}
.d-line.light{background:rgba(242,238,227,.5)}

@keyframes d-spin{to{transform:rotate(360deg)}}
@keyframes d-spin-r{to{transform:rotate(-360deg)}}
@keyframes d-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
@keyframes d-floatx{0%,100%{transform:translateX(0)}50%{transform:translateX(13px)}}
.spin{animation:d-spin 40s linear infinite}
.spin-r{animation:d-spin-r 52s linear infinite}
.float{animation:d-float 10s ease-in-out infinite}
.floatx{animation:d-floatx 13s ease-in-out infinite}

/* section index — constructivist red plus marker */
.sec-idx{position:relative;padding-left:24px}
.sec-idx::before{content:"";position:absolute;left:0;top:.28em;width:12px;height:12px;
  background:linear-gradient(var(--red),var(--red)) center/100% 2.6px no-repeat,
             linear-gradient(var(--red),var(--red)) center/2.6px 100% no-repeat}

@media(max-width:640px){.d-target,.d-dots,.d-ring{transform:scale(.7)}}

/* ----------  REVEAL ANIM  ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.08s}
.reveal[data-d="2"]{transition-delay:.16s}
.reveal[data-d="3"]{transition-delay:.24s}
.reveal[data-d="4"]{transition-delay:.32s}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .display .ln>span{transform:none}
}