/* ============================================================
   craftagent — REDESIGN system  ·  "Operator's Field Manual"
   styles.css = tokens · themes · nav · ambient · transitions
                · home (hero/radar/facets/gateband/clusters/manifesto/pathway)
                · read (spine/TOC thread/focus/masthead/endmatter)
                · blocks (StartHere/AuthorCard/NextPrev)
   Baked default: Daylight Blueprint + Vermilion + mid motion.
   Theme:  data-theme="light|dark"  (toggle in nav)
   Ported from Claude Design handoff (GARDEN-042). Serif = Lora (VN-safe).
   ============================================================ */

@font-face{font-family:'Be Vietnam Pro';src:url('/fonts/BeVietnamPro-Regular.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:'Be Vietnam Pro';src:url('/fonts/BeVietnamPro-SemiBold.ttf') format('truetype');font-weight:600;font-display:swap}
@font-face{font-family:'Be Vietnam Pro';src:url('/fonts/BeVietnamPro-Bold.ttf') format('truetype');font-weight:700;font-display:swap}

:root{
  --serif:'Lora','Be Vietnam Pro',serif;
  --sans:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --maxw:1400px;
  --read:740px;
  --rail:268px;
  --gap:64px;
  --mo:1;            /* motion multiplier */
  --ease:cubic-bezier(.2,.7,.2,1);
  --spring:cubic-bezier(.2,1.5,.4,1);
  --accent-h:155;    /* baked default hue (Forest green) */
}

/* ---------- THEME: LIGHT ---------- */
:root,[data-theme="light"]{
  --paper:oklch(0.992 0.003 var(--accent-h)); --paper-2:oklch(0.978 0.006 var(--accent-h)); --raise:oklch(0.999 0.0015 var(--accent-h)); --raise-2:oklch(0.987 0.004 var(--accent-h));
  --ink:oklch(0.25 0.02 var(--accent-h)); --ink-soft:oklch(0.44 0.026 var(--accent-h)); --ink-mute:oklch(0.64 0.026 var(--accent-h));
  --line:oklch(0.922 0.009 var(--accent-h)); --line-2:oklch(0.864 0.014 var(--accent-h));
  --accent:oklch(.58 .19 var(--accent-h)); --accent-ink:oklch(.5 .17 var(--accent-h));
  --wash:oklch(.94 .035 var(--accent-h));
  --good:#157F5B; --good-bg:#E6F2EB; --good-line:#BFE0CE;
  --alert:#C0382B; --alert-bg:#FBEAE7; --alert-line:#F0CFC9;
  --shadow:0 1px 2px rgba(40,28,12,.05),0 12px 34px rgba(60,40,16,.07);
  --shadow-sm:0 1px 2px rgba(40,28,12,.05),0 4px 14px rgba(60,40,16,.06);
  --shadow-lg:0 2px 6px rgba(40,28,12,.06),0 30px 64px rgba(60,40,16,.13);
  --grid:rgba(110,90,60,.10);
  --grain:.04;
}
/* ---------- THEME: DARK ---------- */
[data-theme="dark"]{
  --paper:oklch(0.16 0.014 var(--accent-h)); --paper-2:oklch(0.2 0.018 var(--accent-h)); --raise:oklch(0.233 0.02 var(--accent-h)); --raise-2:oklch(0.268 0.022 var(--accent-h));
  --ink:oklch(0.93 0.015 var(--accent-h)); --ink-soft:oklch(0.8 0.022 var(--accent-h)); --ink-mute:oklch(0.62 0.024 var(--accent-h));
  --line:oklch(0.31 0.018 var(--accent-h)); --line-2:oklch(0.41 0.024 var(--accent-h));
  --accent:oklch(.7 .18 var(--accent-h)); --accent-ink:oklch(.78 .16 var(--accent-h));
  --wash:oklch(.28 .06 var(--accent-h));
  --good:#3CC98A; --good-bg:#16241D; --good-line:#27402F;
  --alert:#FF6B5A; --alert-bg:#2A1815; --alert-line:#43241F;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 40px rgba(0,0,0,.45);
  --shadow-sm:0 1px 2px rgba(0,0,0,.4),0 6px 18px rgba(0,0,0,.4);
  --shadow-lg:0 2px 8px rgba(0,0,0,.5),0 36px 74px rgba(0,0,0,.62);
  --grid:rgba(190,170,130,.07);
  --grain:.055;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font:400 18px/1.7 var(--serif);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  transition:background .5s var(--ease),color .5s var(--ease);
  overflow-x:hidden;
}
/* paper grain */
body::after{
  content:"";position:fixed;inset:0;z-index:9998;pointer-events:none;
  opacity:var(--grain);mix-blend-mode:multiply;
  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='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
[data-theme="dark"] body::after{mix-blend-mode:screen}
::selection{background:var(--accent);color:#fff}
a{color:var(--accent);text-decoration:none}
.mono{font-family:var(--mono)}.sans{font-family:var(--sans)}
h1,h2,h3,h4{text-wrap:balance}
p{text-wrap:pretty}

/* ===== shared kicker / eyebrow ===== */
.kick{font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:.7em}
.kick::before{content:"";width:18px;height:1.5px;background:var(--accent)}
.kick.nofold::before{display:none}

/* ===== buttons ===== */
.btn{font-family:var(--sans);font-weight:700;font-size:15px;padding:13px 24px;border-radius:999px;cursor:pointer;border:1px solid transparent;display:inline-flex;align-items:center;gap:9px;text-decoration:none;transition:transform .2s var(--ease),background .2s,box-shadow .25s,border-color .2s,color .2s}
.btn .arr{transition:transform .25s var(--spring)}
.btn:hover .arr{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 22px -10px var(--accent)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 14px 30px -10px var(--accent)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* ============================================================
   NAV  — sticky, with compact 10-cluster locator
   ============================================================ */
.nav{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--paper) 84%,transparent);backdrop-filter:saturate(1.5) blur(14px);border-bottom:1px solid var(--line)}
.nav-accent{position:absolute;left:0;bottom:-1px;height:2px;width:100%;overflow:hidden;background:linear-gradient(90deg,transparent,color-mix(in srgb,var(--accent) 26%,transparent),transparent)}
.nav-accent::after{content:"";position:absolute;top:0;left:0;height:100%;width:34%;background:linear-gradient(90deg,transparent,var(--accent),var(--accent-ink),transparent);transform:translateX(-130%);animation:navsweep calc(5.5s / var(--mo)) linear infinite}
@keyframes navsweep{to{transform:translateX(395%)}}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:13px 30px;display:flex;align-items:center;gap:24px}
.brand{font-family:var(--sans);font-weight:800;font-size:19px;letter-spacing:-.04em;color:var(--ink);display:inline-flex;align-items:center;gap:10px;cursor:pointer;background:none;border:0;padding:0;text-decoration:none}
.brand .logo{flex:0 0 auto;border-radius:8px;box-shadow:0 4px 10px -4px var(--accent);transition:transform .3s var(--spring)}
.brand:hover .logo{transform:rotate(-6deg) scale(1.06)}
.brand-word{line-height:1}
.brand b{color:var(--accent);font-weight:800}

/* compact locator: 10 pips — the system at a glance */
.loc{display:flex;align-items:center;gap:0;margin-left:8px}
.loc-pip{position:relative;width:20px;height:20px;display:grid;place-items:center;cursor:pointer;background:none;border:0;padding:0;text-decoration:none}
.loc-pip i{width:8px;height:8px;border-radius:2px;background:var(--line-2);transform:rotate(45deg);transition:.25s var(--spring)}
.loc-pip:hover i,.loc-pip.on i{background:var(--accent);transform:rotate(45deg) scale(1.5)}
.loc-pip.soon i{background:var(--line-2)}
.loc-pip.here i{background:var(--accent);box-shadow:0 0 0 3px var(--wash);transform:rotate(45deg) scale(1.4)}
.loc-pip .tip{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(-4px);white-space:nowrap;background:var(--ink);color:var(--paper);font-family:var(--sans);font-size:11.5px;font-weight:600;padding:5px 9px;border-radius:7px;opacity:0;pointer-events:none;transition:.18s;z-index:5}
.loc-pip .tip b{color:var(--accent);font-family:var(--mono);margin-right:6px}
.loc-pip:hover .tip{opacity:1;transform:translateX(-50%)}
.nav-spacer{flex:1}
.nlink{font-family:var(--sans);font-size:14px;font-weight:600;color:var(--ink-mute);cursor:pointer;background:none;border:0;text-decoration:none;transition:color .2s}
.nlink:hover,.nlink.on{color:var(--ink)}
.nav-r{display:flex;align-items:center;gap:12px}
.seg{display:inline-flex;align-items:center;background:var(--paper-2);border:1px solid var(--line);border-radius:999px;padding:3px}
.seg a,.seg button{font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.05em;border:0;background:transparent;color:var(--ink-mute);padding:5px 11px;border-radius:999px;cursor:pointer;transition:color .2s;text-decoration:none}
.seg a.on,.seg button.on{background:var(--accent);color:#fff}
.iconbtn{width:36px;height:36px;border-radius:999px;border:1px solid var(--line);background:var(--paper-2);color:var(--ink);display:grid;place-items:center;cursor:pointer;transition:transform .3s var(--spring),border-color .2s}
.iconbtn:hover{border-color:var(--accent);transform:rotate(16deg)}
.iconbtn svg{width:17px;height:17px}

/* reading progress bar */
.progress{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-ink));z-index:70;width:0;transition:width .1s linear;box-shadow:0 0 10px var(--accent)}

/* ============================================================
   AMBIENT — cursor-reactive blueprint field + glow
   ============================================================ */
.ambient{position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden}
.ambient .field{position:absolute;inset:-2px;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:38px 38px;
  -webkit-mask-image:radial-gradient(120% 80% at var(--mx,50%) var(--my,0%),#000 0,transparent 70%);
          mask-image:radial-gradient(120% 80% at var(--mx,50%) var(--my,0%),#000 0,transparent 70%);
  transition:-webkit-mask-image .3s linear;opacity:.9;animation:fieldBreath calc(11s / var(--mo)) ease-in-out infinite}
@keyframes fieldBreath{0%,100%{opacity:.72}50%{opacity:1}}
.ambient .glow{position:absolute;width:60vw;height:60vw;max-width:780px;max-height:780px;border-radius:50%;
  background:radial-gradient(circle,color-mix(in srgb,var(--accent) 16%,transparent),transparent 62%);
  filter:blur(30px);top:-18%;right:-10%;
  animation:glowdrift calc(16s / var(--mo)) ease-in-out infinite alternate, glowBreath calc(8s / var(--mo)) ease-in-out infinite;opacity:.5}
@keyframes glowBreath{0%,100%{opacity:.4}50%{opacity:.7}}
[data-theme="dark"] .ambient .glow{opacity:.7}
@keyframes glowdrift{from{transform:translate(0,0) scale(1)}to{transform:translate(-60px,40px) scale(1.15)}}

/* ============================================================
   PAGE ENTRANCE — rise only (no opacity in keyframe so a frozen/idle
   animation never strands content hidden — handoff lesson)
   ============================================================ */
.view{animation:viewIn .45s var(--ease)}
@keyframes viewIn{from{transform:translateY(12px)}to{transform:none}}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal{opacity:0;transform:translateY(18px);filter:blur(6px);transition:opacity .7s var(--ease),transform .7s var(--ease),filter .7s var(--ease)}
.reveal.in{opacity:1;transform:none;filter:none}
.reveal.d1{transition-delay:.07s}.reveal.d2{transition-delay:.14s}.reveal.d3{transition-delay:.21s}
.reveal.d4{transition-delay:.28s}.reveal.d5{transition-delay:.35s}

/* Honor reduced-motion: tame perpetual decorative loops only. Reveals,
   diagram draw-ons and hover feedback carry meaning and stay. */
@media (prefers-reduced-motion: reduce){
  .sm-tag .live::before,.cg-rip .ring,.gates .gate .gb,
  .nav-accent::after,.ambient .field,.ambient .glow{animation:none!important}
  .reveal:not(.in){opacity:1;transform:none;filter:none}
}

/* ============================================================
   FOOTER
   ============================================================ */
.foot{border-top:1px solid var(--line);margin-top:90px;background:var(--paper-2);position:relative;z-index:1;overflow:hidden}
.foot::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:36px 36px;opacity:.5;-webkit-mask-image:radial-gradient(90% 140% at 0% 100%,#000,transparent 60%);mask-image:radial-gradient(90% 140% at 0% 100%,#000,transparent 60%)}
.foot::after{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,color-mix(in srgb,var(--accent) 40%,transparent) 50%,transparent);opacity:.7}
.foot-grid{position:relative;max-width:var(--maxw);margin:0 auto;padding:54px 30px 58px;display:block}
.foot-brand .fb-mark{display:inline-flex;align-items:center;gap:13px}
.foot-brand .fb-word{font-family:var(--sans);font-weight:800;font-size:26px;letter-spacing:-.04em;color:var(--ink)}
.foot-brand .fb-word b{color:var(--accent)}
.foot-brand p{font-family:var(--sans);font-size:14px;color:var(--ink-soft);margin:18px 0 0;max-width:46ch;line-height:1.65}
.fb-tags{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap;align-items:center}
.fb-tags span{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-mute);border:1px solid var(--line);border-radius:999px;padding:5px 12px}
.fb-tags a{font-family:var(--sans);font-size:12.5px;color:var(--ink-mute);text-decoration:none;border-bottom:1px solid transparent}
.fb-tags a:hover{color:var(--accent);border-bottom-color:var(--accent)}

@media(max-width:1080px){ .loc{display:none} }
@media(max-width:720px){
  .nav-in{padding:12px 18px;gap:14px}
  .nlink.hide-sm{display:none}
  body{font-size:17px}
}

/* ===================== HERO ===================== */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 30px}
.hero{max-width:var(--maxw);margin:0 auto;padding:64px 30px 40px;position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:.92fr 1.16fr;gap:40px;align-items:center}
.hero h1{font-family:var(--serif);font-weight:500;font-size:clamp(40px,5.4vw,72px);line-height:1.02;letter-spacing:-.028em;margin:18px 0 0;color:var(--ink)}
.hero h1 em{font-style:italic;color:var(--accent)}
.hero .lede{font-family:var(--serif);font-size:21px;line-height:1.55;color:var(--ink-soft);max-width:44ch;margin:24px 0 0}
.hero-cta{display:flex;align-items:center;gap:14px;margin-top:32px;flex-wrap:wrap}

/* ---- hero facets ---- */
.facets{display:flex;gap:30px;margin-top:38px;border-top:1px solid var(--line)}
.facet{flex:1;padding:22px 0 4px;display:flex;flex-direction:column}
.facet .fv{font-family:var(--serif);font-style:italic;font-weight:500;font-size:clamp(34px,3.6vw,46px);color:var(--accent);line-height:.95;font-variant-numeric:tabular-nums}
.facet .fl{font-family:var(--sans);font-size:13px;font-weight:600;color:var(--ink);margin-top:9px;line-height:1.2}
.facet .fs{font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-mute);margin-top:3px}
.facet .fviz{margin-top:14px;height:20px;display:flex;align-items:flex-end;gap:3px}
.fviz.bars i{width:5px;background:color-mix(in srgb,var(--accent) 32%,transparent);border-radius:2px;height:30%;transform-origin:bottom;transform:scaleY(0);transition:transform .6s var(--ease)}
.facet.in .fviz.bars i{transform:scaleY(1)}
.facet.in .fviz.bars i:nth-child(1){transition-delay:.05s}.facet.in .fviz.bars i:nth-child(2){transition-delay:.1s}.facet.in .fviz.bars i:nth-child(3){transition-delay:.15s}.facet.in .fviz.bars i:nth-child(4){transition-delay:.2s}.facet.in .fviz.bars i:nth-child(5){transition-delay:.25s}.facet.in .fviz.bars i:nth-child(6){transition-delay:.3s}.facet.in .fviz.bars i:nth-child(7){transition-delay:.35s}.facet.in .fviz.bars i:nth-child(8){transition-delay:.4s}
.fviz.bars i.hot{background:var(--accent)}
.fviz.gatev{position:relative;gap:0;justify-content:space-between;width:88px;align-items:center}
.fviz.gatev::before{content:"";position:absolute;left:5px;right:5px;top:50%;height:2px;background:var(--line-2)}
.fviz.gatev::after{content:"";position:absolute;left:5px;top:50%;height:2px;background:var(--accent);width:0;transform:translateY(-50%);transition:width .9s var(--ease)}
.facet.in .fviz.gatev::after{width:calc(100% - 10px)}
.fviz.gatev i{position:relative;z-index:1;width:11px;height:11px;border-radius:50%;background:var(--raise);border:2px solid var(--accent);transform:scale(0);transition:transform .4s var(--spring)}
.facet.in .fviz.gatev i{transform:scale(1)}
.facet.in .fviz.gatev i:nth-child(1){transition-delay:.15s}.facet.in .fviz.gatev i:nth-child(2){transition-delay:.35s}.facet.in .fviz.gatev i:nth-child(3){transition-delay:.55s}.facet.in .fviz.gatev i:nth-child(4){transition-delay:.75s}
.fviz.tiers{align-items:center}
.fviz.tiers .ring{width:6px;height:6px;border-radius:50%;border:1.5px solid var(--accent);opacity:.4}
.fviz.tiers .ring.r2{width:12px;height:12px;opacity:.7}
.fviz.tiers .ring.r3{width:18px;height:18px;opacity:1}
.fviz.steps{align-items:flex-end;gap:4px;height:22px}
.fviz.steps i{width:8px;border-radius:2px;background:var(--accent)}
.fviz.steps i:nth-child(1){height:42%;opacity:.45}
.fviz.steps i:nth-child(2){height:70%;opacity:.72}
.fviz.steps i:nth-child(3){height:100%}

/* ---- floating System Radar (hero right, no card) ---- */
.sysmap{position:relative;padding:0;overflow:visible;margin-right:-14px}
.sysmap::before{content:"";position:absolute;left:50%;top:48%;width:118%;height:118%;transform:translate(-50%,-50%);pointer-events:none;z-index:-1;
  background:radial-gradient(circle,color-mix(in srgb,var(--accent) 13%,transparent),transparent 60%);filter:blur(12px);opacity:.85}
.sm-tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-mute);display:flex;justify-content:space-between;align-items:center;position:relative;padding:0 4px}
.sm-tag .live{color:var(--accent);display:inline-flex;align-items:center;gap:6px}
.sm-tag .live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);animation:pulse calc(1.9s / var(--mo)) infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--accent) 60%,transparent)}70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}
.radar{position:relative;width:100%;aspect-ratio:430/336;margin:14px 0 2px}
.radar svg{width:100%;height:100%;display:block;overflow:visible}
.radar .gridring{fill:none;stroke:var(--line-2);stroke-width:1;opacity:.55}
.radar .cross{stroke:var(--line);stroke-width:1;opacity:.45}
.radar .spoke{stroke:var(--line);stroke-width:1;opacity:.32}
.radar .sweep{transform-box:view-box;transform-origin:215px 168px;animation:radarSpin calc(9s / var(--mo)) linear infinite}
@keyframes radarSpin{to{transform:rotate(360deg)}}
.radar .hub{fill:var(--accent)}
.radar .hubring{fill:none;stroke:var(--accent);stroke-width:1;opacity:.5}
.rnode{cursor:pointer}
.rnode .ping{fill:none;stroke:var(--accent);stroke-width:2;transform-box:fill-box;transform-origin:center;opacity:0;animation:radarPing calc(9s / var(--mo)) linear infinite;animation-delay:var(--pd,0s)}
@keyframes radarPing{0%{transform:scale(.55);opacity:0}3%{opacity:.9}17%{transform:scale(2.3);opacity:0}100%{opacity:0}}
.rnode .dot{fill:var(--raise);stroke:var(--line-2);stroke-width:1.5;transform-box:fill-box;transform-origin:center;transition:fill .25s var(--ease),stroke .25s;animation:dotPop calc(9s / var(--mo)) linear infinite;animation-delay:var(--pd,0s)}
@keyframes dotPop{0%,100%{transform:scale(1)}3%{transform:scale(1.24)}15%{transform:scale(1)}}
.rnode .halo{fill:var(--accent);opacity:0;animation:nodeGlow calc(9s / var(--mo)) linear infinite;animation-delay:var(--pd,0s)}
@keyframes nodeGlow{0%,100%{opacity:0}3%{opacity:.26}16%{opacity:0}}
.rnode .num{fill:var(--ink-mute);font-family:var(--mono);font-size:11px;font-weight:600;text-anchor:middle;dominant-baseline:central;transition:fill .2s;pointer-events:none}
.rnode.soon .dot{stroke-dasharray:3 3;opacity:.7}
.rnode:hover .dot,.rnode.on .dot{fill:var(--wash);stroke:var(--accent);stroke-width:2.6}
.rnode:hover .num,.rnode.on .num{fill:var(--accent)}
.rnode:hover .halo,.rnode.on .halo{opacity:.14;animation:none}
.sm-cap{position:relative;font-family:var(--sans);font-size:12.5px;line-height:1.4;color:var(--ink-soft);min-height:70px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;margin-top:10px;padding-top:13px;border-top:1px solid var(--line);transition:color .2s}
.sm-cap b{color:var(--accent);font-weight:600}
.sm-foot{position:relative;display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-mute)}

/* ===================== NEWCOMER WELCOME BAND (TOFU funnel entry, home only) ===================== */
/* A prominent soft rail right under the hero: invites people who have never handed
   work to an AI into the "Cửa vào" hub. Operator content below stays untouched. */
.nband{position:relative;z-index:1;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(100deg,color-mix(in srgb,var(--wash) 90%,var(--paper-2)),var(--paper-2));overflow:hidden}
.nband::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:linear-gradient(var(--accent),var(--accent-ink))}
.nband::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(70% 120% at 100% 0,var(--wash),transparent 60%);opacity:.6}
.nband-in{position:relative;max-width:var(--maxw);margin:0 auto;padding:42px 30px;display:flex;align-items:center;gap:34px;flex-wrap:wrap}
.nband .nb-ic{flex:0 0 auto;width:58px;height:58px;border-radius:15px;background:var(--accent);border:1px solid var(--accent);display:grid;place-items:center;color:#fff;box-shadow:0 12px 28px -12px var(--accent)}
.nband .nb-ic svg{width:28px;height:28px}
.nband .nb-tx{flex:1;min-width:240px;display:flex;flex-direction:column;align-items:flex-start}
.nband .nb-k{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);font-weight:600;display:block;margin-bottom:6px}
.nband .nb-h{font-family:var(--serif);font-weight:500;font-size:clamp(24px,3vw,34px);line-height:1.12;letter-spacing:-.025em;color:var(--ink);margin:0 0 9px;max-width:30ch}
.nband .nb-h em{font-style:italic;color:var(--accent)}
.nband .nb-sub{font-family:var(--sans);font-size:15px;color:var(--ink-soft);margin:0;max-width:52ch;line-height:1.55}
.nband .nb-chips{display:flex;gap:8px;margin-top:15px;flex-wrap:wrap}
.nband .nb-chip{font-family:var(--mono);font-size:10.5px;letter-spacing:.03em;color:var(--ink-soft);background:var(--raise);border:1px solid var(--line);border-radius:999px;padding:6px 12px;display:inline-flex;align-items:center;gap:7px}
.nband .nb-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.nband .nb-cta{flex:0 0 auto}
.nband .nb-cta .btn{font-size:16px;padding:15px 28px}
@media(max-width:640px){.nband-in{padding:22px 18px;gap:16px}.nband .nb-ic{display:none}}

/* ===================== GATE BAND (signature, interactive) ===================== */
.gateband{position:relative;z-index:1;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2);margin-top:30px}
.gateband-in{max-width:var(--maxw);margin:0 auto;padding:54px 30px 60px}
.gb-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px}
.gb-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(28px,3.4vw,42px);letter-spacing:-.02em;margin:10px 0 0;max-width:20ch;line-height:1.06}
.gb-head .side{font-family:var(--sans);font-size:14px;line-height:1.6;color:var(--ink-soft);max-width:32ch}
.gates{display:flex;align-items:flex-start;gap:0;position:relative}
.gates .rail{position:absolute;top:31px;left:6%;right:6%;height:2px;background:var(--line-2)}
.gates .rail .fill{position:absolute;inset:0;background:linear-gradient(90deg,var(--accent),var(--accent-ink));transform:scaleX(var(--gp,0));transform-origin:left;transition:transform .5s var(--ease);box-shadow:0 0 8px var(--accent)}
.gate{flex:1;display:flex;flex-direction:column;align-items:center;position:relative;cursor:pointer;padding:0 6px;text-align:center;border:0;background:none;font-family:inherit;color:inherit;appearance:none;-webkit-appearance:none}
.gate .gb{position:relative;z-index:1;width:62px;height:62px;border-radius:50%;border:2px solid var(--accent);background:var(--raise);color:var(--accent);display:grid;place-items:center;font-family:var(--sans);font-weight:800;font-size:20px;transition:transform .3s var(--spring),background .25s,color .25s,box-shadow .25s}
.gate .gb svg{width:24px;height:24px}
.gate.fill .gb,.gate:hover .gb{background:var(--accent);color:#fff;box-shadow:0 10px 24px -8px var(--accent);transform:translateY(-2px) scale(1.05)}
.gate .gl{font-family:var(--sans);font-size:14px;font-weight:700;color:var(--ink);margin-top:15px}
.gate .gs{font-family:var(--sans);font-size:11.5px;color:var(--ink-mute);margin-top:4px;line-height:1.35;max-width:18ch}
.gate-detail{max-width:var(--maxw);margin:28px auto 0;background:var(--raise);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:0 14px 14px 0;padding:20px 24px;display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center;box-shadow:var(--shadow-sm)}
.gate-detail .gd-n{font-family:var(--serif);font-style:italic;font-size:46px;color:var(--accent);line-height:1}
.gate-detail .gd-b b{font-family:var(--sans);font-size:15px;color:var(--ink);display:block;margin-bottom:6px}
.gate-detail .gd-b p{margin:0;font-family:var(--mono);font-size:13px;line-height:1.6;color:var(--ink-soft);background:var(--paper-2);border-radius:8px;padding:10px 13px}
.gate-detail[hidden]{display:none}

/* ===================== CLUSTERS INDEX ===================== */
.cidx{max-width:var(--maxw);margin:0 auto;padding:70px 30px 30px;position:relative;z-index:1}
.cidx-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;border-bottom:2px solid var(--ink);padding-bottom:16px;margin-bottom:8px}
.cidx-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(28px,3.4vw,40px);letter-spacing:-.02em;margin:8px 0 0}
.cidx-head .meta{font-family:var(--mono);font-size:12px;color:var(--ink-mute);letter-spacing:.06em;white-space:nowrap}
.cgrid{display:grid;grid-template-columns:1fr 1fr;gap:0}
.crow{display:grid;grid-template-columns:84px 1fr auto;gap:22px;align-items:center;padding:22px 18px;border-bottom:1px solid var(--line);cursor:pointer;text-align:left;background:none;border-left:0;border-right:0;border-top:0;position:relative;transition:background .2s;font-family:inherit;color:inherit;overflow:hidden;text-decoration:none}
.crow::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .28s var(--ease)}
.crow:hover{background:color-mix(in srgb,var(--accent) 5%,transparent)}
.crow:hover::before{transform:scaleY(1)}
.crow .c-no{font-family:var(--serif);font-style:italic;font-weight:500;font-size:58px;line-height:.8;color:var(--line-2);letter-spacing:-.04em;transition:color .25s,transform .25s var(--spring)}
.crow:hover .c-no{color:var(--accent);transform:translateX(3px)}
.crow .c-mid h3{font-family:var(--serif);font-weight:500;font-size:21px;letter-spacing:-.015em;margin:0;line-height:1.14;color:var(--ink)}
.crow .c-mid p{font-family:var(--sans);font-size:13px;line-height:1.5;color:var(--ink-soft);margin:6px 0 0;max-width:46ch}
.crow .c-right{display:flex;flex-direction:column;align-items:flex-end;gap:9px;min-width:96px}
.chip{font-family:var(--mono);font-size:10px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;padding:5px 10px;border-radius:999px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;background:var(--accent);color:#fff}
.chip::before{content:"";width:5px;height:5px;border-radius:50%;background:#fff}
.chip.soon{background:var(--paper-2);color:var(--ink-mute);border:1px solid var(--line)}
.chip.soon::before{background:var(--ink-mute)}
.crow.soon{cursor:default}
.crow.soon .c-mid h3{color:var(--ink-soft)}
.crow .c-go{font-family:var(--sans);font-size:12.5px;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:5px;opacity:0;transform:translateX(-6px);transition:.22s}
.crow:hover .c-go{opacity:1;transform:none}
.crow.soon .c-go{display:none}
.crow .c-go .arr{transition:transform .2s}.crow:hover .c-go .arr{transform:translateX(3px)}

/* ===================== MANIFESTO ===================== */
.manifesto{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:60px;background:var(--paper-2);position:relative;z-index:1}
.manifesto-in{max-width:var(--maxw);margin:0 auto;padding:58px 30px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px}
.manifesto .m-lead{grid-column:1/-1;font-family:var(--serif);font-size:clamp(26px,3.3vw,40px);line-height:1.28;letter-spacing:-.02em;max-width:26ch;margin:0 0 16px}
.manifesto .m-lead b{color:var(--accent);font-weight:500;font-style:italic}
.m-col h4{font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin:0 0 10px;font-weight:600}
.m-col p{font-family:var(--sans);font-size:14.5px;line-height:1.65;color:var(--ink-soft);margin:0}

/* ===================== PATHWAY ===================== */
.pathway{max-width:var(--maxw);margin:0 auto;padding:70px 30px 20px;position:relative;z-index:1}
.path-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px}
.path-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(26px,3vw,36px);letter-spacing:-.02em;margin:8px 0 0}
.path-head .meta{font-family:var(--mono);font-size:12px;color:var(--ink-mute)}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.card{position:relative;background:var(--raise);border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;cursor:pointer;overflow:hidden;transition:transform .25s var(--ease),border-color .2s,box-shadow .25s;text-align:left;font-family:inherit;color:inherit;text-decoration:none}
.card::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .28s var(--ease)}
.card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow)}
.card:hover::after{transform:scaleY(1)}
.card.feat{grid-column:1/-1;display:grid;grid-template-columns:1.25fr .75fr;gap:30px;align-items:center;padding:30px}
.card .c-kick{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-mute);font-weight:600;margin-bottom:13px;display:flex;align-items:center;gap:8px}
.card .c-kick .num{color:var(--accent)}
.card.feat .c-kick{color:var(--accent)}
.card h3{font-family:var(--serif);font-weight:500;font-size:22px;line-height:1.2;letter-spacing:-.015em;margin:0 0 9px}
.card.feat h3{font-size:clamp(26px,3vw,38px);line-height:1.08}
.card p{font-family:var(--sans);font-size:13.5px;line-height:1.6;color:var(--ink-soft);margin:0 0 18px;flex:1}
.card .c-foot{display:flex;align-items:center;gap:12px;font-family:var(--sans);font-size:13px;font-weight:600;color:var(--ink-mute)}
.card .c-foot .go{color:var(--accent);display:inline-flex;align-items:center;gap:5px}
.card .c-foot .go .arr{transition:transform .2s}.card:hover .c-foot .go .arr{transform:translateX(3px)}
.feat-art{align-self:stretch;display:flex;align-items:center;justify-content:center}

/* mini-gates (hero/pathway feat art + map cluster 4 diagram) */
.mini-gates{display:flex;width:100%;align-items:flex-start}
.mini-gate{flex:1;display:flex;flex-direction:column;align-items:center;position:relative}
.mini-gate .track{position:absolute;top:21px;left:0;right:0;height:2px;background:var(--line-2);transition:.4s}
.mini-gate:first-child .track{left:50%}.mini-gate:last-child .track{right:50%}
.mini-gate.fill .track{background:var(--accent)}
.mini-gate .mb{position:relative;z-index:1;width:44px;height:44px;border-radius:50%;border:2px solid var(--accent);background:var(--raise);color:var(--accent);display:grid;place-items:center;font-family:var(--sans);font-weight:800;transition:.4s}
.mini-gate.fill .mb{background:var(--accent);color:#fff}
.mini-gate .ml{font-family:var(--sans);font-size:11px;color:var(--ink-soft);margin-top:10px;font-weight:600;text-align:center}

@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .manifesto-in{grid-template-columns:1fr;gap:22px}
  .cgrid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .card.feat{grid-template-columns:1fr;gap:20px}
  .feat-art{display:none}
}
@media(max-width:560px){
  .hero,.cidx,.pathway,.gateband-in,.manifesto-in{padding-left:18px;padding-right:18px}
  .crow{grid-template-columns:48px 1fr;gap:14px;padding:18px 2px}
  .crow .c-no{font-size:34px}
  .crow .c-right{grid-column:2;flex-direction:row;align-items:center;min-width:0;margin-top:8px}
  .crow .c-go{display:none}
  .gates{flex-wrap:wrap;gap:18px}
  .gate{flex:1 1 40%}
  .gates .rail{display:none}
}

/* ============================================================
   MAP PAGE — the 10 clusters as a knowledge terrain
   ============================================================ */
.maphero{max-width:var(--maxw);margin:0 auto;padding:64px 30px 26px;position:relative;z-index:1}
.maphero h1{font-family:var(--serif);font-weight:500;font-size:clamp(42px,5.6vw,78px);line-height:1.0;letter-spacing:-.03em;margin:16px 0 0}
.maphero h1 em{font-style:italic;color:var(--accent)}
.maphero .lede{font-family:var(--serif);font-size:21px;line-height:1.55;color:var(--ink-soft);max-width:58ch;margin:24px 0 0}
.maphero .lede b{color:var(--ink);font-weight:600;font-style:italic}
.map-facets{display:flex;gap:36px;margin-top:32px;max-width:640px;border-top:1px solid var(--line)}
.mapclusters{max-width:var(--maxw);margin:24px auto 0;padding:20px 30px 30px;position:relative;z-index:1}
.mcl{position:relative;display:grid;grid-template-columns:150px 1fr;gap:34px;padding:38px 0;border-top:1px solid var(--line)}
.mcl:first-child{border-top:0}
.mcl-num{position:relative}
.mcl-num .big{font-family:var(--serif);font-weight:500;font-style:italic;font-size:118px;line-height:.8;letter-spacing:-.04em;color:var(--line-2);transition:color .3s}
.mcl:hover .mcl-num .big{color:var(--accent)}
.mcl-num .fig{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute);margin-top:8px;display:block}
.mcl-body{min-width:0}
.mcl-top{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex-wrap:wrap}
.mcl-top h2{font-family:var(--serif);font-weight:500;font-size:clamp(24px,2.8vw,34px);letter-spacing:-.02em;margin:0;line-height:1.08;max-width:22ch}
.mcl-kick{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:10px;display:block}
.mcl-idea{font-family:var(--serif);font-style:italic;font-size:18px;line-height:1.5;color:var(--ink-soft);margin:14px 0 0;max-width:60ch}
.mcl-idea b{font-style:normal;color:var(--accent);font-weight:500}
.mcl-arts{margin-top:24px;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mart{display:flex;gap:13px;align-items:flex-start;background:var(--raise);border:1px solid var(--line);border-radius:13px;padding:14px 16px;cursor:pointer;transition:transform .2s var(--ease),border-color .2s,box-shadow .2s;position:relative;overflow:hidden;text-align:left;font-family:inherit;color:inherit;text-decoration:none}
.mart::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .26s}
.mart:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-sm)}
.mart:hover::after{transform:scaleY(1)}
.mart.pillar{grid-column:1/-1;background:var(--wash);border-color:var(--accent-ink)}
.mart.soon{cursor:default;opacity:.62}
.mart.soon:hover{transform:none;border-color:var(--line);box-shadow:none}
.mart.soon:hover::after{transform:scaleY(0)}
.mart .a-no{flex:0 0 auto;width:28px;height:28px;border-radius:8px;background:var(--paper-2);border:1px solid var(--line);display:grid;place-items:center;font-family:var(--mono);font-size:12px;color:var(--ink-mute);font-weight:600}
.mart.pillar .a-no{background:var(--accent);border-color:var(--accent);color:#fff}
.mart .a-tx b{font-family:var(--serif);font-weight:500;font-size:15.5px;line-height:1.22;letter-spacing:-.01em;color:var(--ink);display:block}
.mart .a-tx span{font-family:var(--mono);font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-mute);margin-top:5px;display:block}
.mcl-soon-box{margin-top:22px;display:flex;gap:14px;align-items:flex-start;background:var(--paper-2);border:1px solid var(--line);border-radius:13px;padding:16px 18px;max-width:640px}
.mcl-soon-box .si{flex:0 0 auto;width:26px;height:26px;color:var(--ink-mute)}
.mcl-soon-box .si svg{width:26px;height:26px}
.mcl-soon-box p{margin:0;font-family:var(--sans);font-size:13px;line-height:1.6;color:var(--ink-soft)}
.mcl-soon-box p b{color:var(--ink);font-weight:600}

@media(max-width:980px){
  .mcl{grid-template-columns:80px 1fr;gap:18px}
  .mcl-num .big{font-size:64px}
  .mcl-arts{grid-template-columns:1fr}
  .map-facets{flex-wrap:wrap;gap:24px}
}
@media(max-width:560px){
  .maphero,.mapclusters{padding-left:18px;padding-right:18px}
}

/* ============================================================
   READING PAGE — shell · navigator spine · focus · masthead · endmatter
   ============================================================ */
.shell{max-width:var(--maxw);margin:0 auto;padding:0 30px;display:grid;grid-template-columns:var(--rail) minmax(0,1fr);gap:0 var(--gap);align-items:start;position:relative;z-index:1}

/* ---------- navigator spine (left) ---------- */
.spine{position:sticky;top:74px;align-self:start;padding-top:48px;max-height:calc(100vh - 74px);overflow:auto;scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
.spine::-webkit-scrollbar{width:6px}
.spine::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:6px}
.sp-cluster .badge{display:inline-flex;align-items:baseline;gap:10px}
.sp-cluster .badge .n{font-family:var(--serif);font-style:italic;font-weight:500;font-size:40px;line-height:.8;color:var(--accent);letter-spacing:-.03em}
.sp-cluster .badge .of{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute)}
.sp-cluster h2{font-family:var(--serif);font-weight:500;font-size:19px;line-height:1.15;letter-spacing:-.015em;margin:9px 0 0;color:var(--ink)}
.sp-cluster .meta{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-mute);margin-top:5px}
.sp-div{display:flex;align-items:center;gap:10px;margin:22px 0 12px}
.sp-div .ln{flex:1;height:1px;background:var(--line)}
.sp-div .lbl{font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-mute)}
.sp-toc{position:relative;display:flex;flex-direction:column;padding-left:18px}
.sp-toc::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--line)}
.sp-toc::after{content:"";position:absolute;left:0;top:6px;width:2px;height:var(--toc-h,0px);background:linear-gradient(180deg,var(--accent),var(--accent-ink));transition:height .2s linear;border-radius:2px}
.sp-toc a{position:relative;display:block;font-family:var(--sans);font-size:13px;line-height:1.4;color:var(--ink-mute);padding:8px 0;text-decoration:none;transition:color .2s,padding .2s}
.sp-toc a .dot{position:absolute;left:-19px;top:13px;width:7px;height:7px;border-radius:50%;background:var(--line-2);transform:scale(.7);transition:.25s var(--spring)}
.sp-toc a:hover{color:var(--ink)}
.sp-toc a.active{color:var(--accent);font-weight:600;padding-left:4px}
.sp-toc a.active .dot{background:var(--accent);transform:scale(1.3);box-shadow:0 0 0 4px var(--wash)}
.sp-toc a.done{color:var(--ink-soft)}
.sp-toc a.done .dot{background:var(--accent)}
.sp-pieces{display:flex;flex-direction:column;border-left:2px solid var(--line)}
.sp-piece{display:flex;gap:11px;align-items:baseline;padding:8px 0 8px 15px;margin-left:-2px;border-left:2px solid transparent;text-decoration:none;cursor:pointer;transition:border-color .2s;background:none;border-top:0;border-right:0;border-bottom:0;text-align:left;font-family:inherit}
.sp-piece .pno{flex:0 0 auto;font-family:var(--mono);font-size:13px;color:var(--ink-mute);transition:color .2s}
.sp-piece .ptx{font-family:var(--sans);font-size:12px;line-height:1.4;color:var(--ink-mute);transition:color .2s}
.sp-piece:hover .pno,.sp-piece:hover .ptx{color:var(--ink)}
.sp-piece.on{border-left-color:var(--accent)}
.sp-piece.on .pno{color:var(--accent)}
.sp-piece.on .ptx{color:var(--accent);font-weight:600}
.sp-back{display:inline-flex;align-items:center;gap:7px;margin-top:24px;font-family:var(--sans);font-size:12.5px;font-weight:600;color:var(--ink-mute);text-decoration:none;cursor:pointer;background:none;border:0}
.sp-back:hover{color:var(--accent)}
.sp-back svg{width:14px;height:14px}

/* ---------- article column ---------- */
.col{justify-self:center;width:100%;min-width:0;max-width:var(--read);position:relative}
.head{padding:48px 0 0}
.idstrip{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:16px;margin-bottom:22px;border-bottom:1px solid var(--line)}
.idstrip .left{display:inline-flex;align-items:center;gap:11px}
.idstrip .cpip{width:25px;height:25px;border-radius:7px;background:var(--accent);color:#fff;font-family:var(--mono);font-size:12px;font-weight:600;display:grid;place-items:center}
.idstrip .ctitle{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft);font-weight:500;cursor:pointer}
.idstrip .ctitle a{color:inherit;text-decoration:none}
.idstrip .ctitle:hover,.idstrip .ctitle a:hover{color:var(--accent)}
.idstrip .role{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:600}
.head h1{font-family:var(--serif);font-weight:500;font-size:clamp(32px,4.4vw,50px);line-height:1.05;letter-spacing:-.025em;margin:0;color:var(--ink)}
.head .dek{font-family:var(--serif);font-style:italic;font-size:21px;line-height:1.45;color:var(--ink-soft);margin:16px 0 0;max-width:40ch}
.metabar{display:flex;align-items:center;margin:22px 0 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);flex-wrap:wrap}
.metabar .cell{padding:11px 22px;display:flex;flex-direction:column;gap:3px;border-right:1px solid var(--line)}
.metabar .cell:first-child{padding-left:0}
.metabar .cell .k{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute)}
.metabar .cell .v{font-family:var(--sans);font-size:13.5px;font-weight:600;color:var(--ink)}
.metabar .cell .v a{color:var(--accent)}
.abstract{margin:24px 0 0;background:var(--wash);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:0 14px 14px 0;padding:20px 24px}
.abstract .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:600;display:block;margin-bottom:9px}
.abstract p{font-family:var(--serif);font-style:italic;font-size:18px;line-height:1.55;color:var(--ink-soft);margin:0}
.abstract b{font-style:normal;font-weight:600;color:var(--ink)}

/* ---------- end matter ---------- */
.endmatter{margin:58px 0 0;border-top:2px solid var(--ink);padding-top:14px}
.endmatter .tagrow{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:24px;font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase}
.endmatter .tagrow .lbl{color:var(--accent)}
.endmatter .tagrow .pos{color:var(--ink-mute)}

/* in-article ad slot */
.adslot{max-width:var(--read);margin:30px auto;min-height:90px;border:1px dashed var(--line-2);border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--paper-2)}
.adslot ins{width:100%}

/* ---------- article body (markdown) + FOCUS highlight ---------- */
article{counter-reset:sec}
article .sec{transition:opacity .5s var(--ease)}
article.focus .sec{opacity:.42;filter:saturate(.7)}
article.focus .sec.active{opacity:1;filter:none}
article p{margin:0 0 24px;font-size:19px;line-height:1.78}
article h2{counter-increment:sec;font-family:var(--serif);font-weight:500;font-size:28px;line-height:1.18;letter-spacing:-.02em;margin:52px 0 16px;scroll-margin-top:96px;position:relative;color:var(--ink)}
article h2 .h2n{font-family:var(--mono);font-style:normal;font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--accent);display:block;margin-bottom:8px}
article h2::before{content:"";position:absolute;left:-26px;top:.5em;width:9px;height:9px;background:var(--accent);border-radius:2px;transform:rotate(45deg) scale(0);transition:transform .4s var(--spring)}
.sec.active h2::before{transform:rotate(45deg) scale(1)}
article h3{font-family:var(--serif);font-weight:600;font-size:21px;line-height:1.3;letter-spacing:-.01em;margin:34px 0 12px;color:var(--ink)}
article strong{font-weight:600;color:var(--ink)}
[data-theme="dark"] article strong{color:#fff}
article em{font-style:italic}
article a{border-bottom:1px solid var(--accent-ink)}
article a:hover{background:var(--wash)}
article blockquote{margin:32px 0;padding:4px 0 4px 26px;border-left:3px solid var(--accent);font-family:var(--serif);font-style:italic;font-size:22px;line-height:1.45;color:var(--ink)}
article ul,article ol{margin:0 0 24px;padding-left:24px}
article li{margin:0 0 11px;line-height:1.6}article li::marker{color:var(--accent)}
article code{font-family:var(--mono);font-size:.82em;background:var(--paper-2);border:1px solid var(--line);padding:1px 6px;border-radius:5px;color:var(--accent-ink)}
article pre.code{font-family:var(--mono);font-size:13.5px;line-height:1.6;background:var(--paper-2);border:1px solid var(--line);border-radius:12px;padding:16px 18px;overflow-x:auto;margin:0 0 24px}
article pre.code code{background:none;border:0;padding:0;color:var(--ink-soft);font-size:1em}
article hr{border:0;height:1px;background:var(--line);margin:44px 0}
.diagram + .cap,.cap{font-family:var(--sans);font-style:normal;text-align:left;font-size:14px;line-height:1.7;color:var(--ink-mute);margin:14px 0 30px}
.cap em{font-style:italic}

@media(max-width:1080px){
  .shell{display:block;padding:0 26px}
  .spine{position:static;max-height:none;overflow:visible;padding:22px;max-width:var(--read);margin:22px auto 0;border:1px solid var(--line);border-radius:16px;background:var(--paper-2)}
  .spine .sp-toc{display:none}
  .spine .sp-div.toc-div{display:none}
  .col{margin:0 auto}
  article.focus .sec{opacity:1;filter:none}
}
@media(max-width:560px){
  .shell{padding:0 18px}
  .head h1{font-size:31px}
  article p{font-size:17px}
  .metabar{flex-wrap:wrap}
  .metabar .cell{flex:1 1 45%;border-right:0}
}

/* ============================================================
   BLOCKS — StartHere · AuthorCard · NextPrev
   ============================================================ */
.starthere{position:relative;z-index:1;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2);margin-top:70px;overflow:hidden}
.starthere::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(80% 120% at 100% 0,var(--wash),transparent 55%);opacity:.7}
.sh-in{position:relative;max-width:var(--maxw);margin:0 auto;padding:60px 30px 64px}
.sh-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(28px,3.6vw,44px);letter-spacing:-.025em;line-height:1.05;margin:12px 0 34px;max-width:20ch}
.sh-paths{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.sh-card{position:relative;display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:18px;align-items:start;text-align:left;background:var(--raise);border:1px solid var(--line);border-radius:18px;padding:26px 26px 24px;cursor:pointer;font-family:inherit;color:inherit;overflow:hidden;transition:transform .28s var(--ease),border-color .2s,box-shadow .28s;text-decoration:none}
.sh-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--line-2)}
.sh-card.primary{border-color:var(--accent-ink);background:linear-gradient(165deg,var(--raise),color-mix(in srgb,var(--wash) 60%,var(--raise)))}
.sh-no{grid-row:1/3;align-self:start;font-family:var(--serif);font-style:italic;font-weight:500;font-size:46px;line-height:.8;color:var(--line-2);transition:color .25s}
.sh-card:hover .sh-no{color:var(--accent)}
.sh-card.primary .sh-no{color:var(--accent)}
.sh-ic{position:absolute;top:24px;right:24px;width:30px;height:30px;color:var(--accent);opacity:.55}
.sh-ic svg{width:30px;height:30px}
.sh-tx{grid-column:2}
.sh-k{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute);display:block;margin-bottom:8px}
.sh-tx b{font-family:var(--serif);font-weight:500;font-size:22px;letter-spacing:-.015em;color:var(--ink);display:block;line-height:1.15}
.sh-d{font-family:var(--sans);font-size:13.5px;line-height:1.55;color:var(--ink-soft);display:block;margin-top:8px;max-width:34ch}
.sh-go{grid-column:2;justify-self:start;margin-top:16px;font-family:var(--sans);font-size:13.5px;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:7px}
.sh-go .arr{transition:transform .25s var(--spring)}
.sh-card:hover .sh-go .arr{transform:translateX(5px)}

.authorcard{max-width:var(--maxw);margin:54px auto 0;padding:0 30px;position:relative;z-index:1}
.au-in{position:relative;display:grid;grid-template-columns:auto 1fr auto;gap:28px;align-items:center;background:var(--raise);border:1px solid var(--line);border-radius:20px;padding:30px 34px;box-shadow:var(--shadow-sm);overflow:hidden}
.au-in::before{content:"\201C";position:absolute;top:-22px;right:30px;font-family:var(--serif);font-size:160px;line-height:1;color:var(--accent);opacity:.07;pointer-events:none}
.au-badge{position:relative;flex:0 0 auto;width:62px;height:62px}
.au-badge span{position:absolute;inset:0;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-family:var(--sans);font-weight:800;font-size:28px}
.au-ring{position:absolute;inset:-6px;border-radius:50%;border:1.5px solid var(--accent);opacity:.4;animation:auRing calc(3s / var(--mo)) ease-in-out infinite}
@keyframes auRing{0%,100%{transform:scale(1);opacity:.4}50%{transform:scale(1.12);opacity:.1}}
.au-k{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:8px}
.au-quote{font-family:var(--serif);font-size:clamp(18px,2.1vw,24px);line-height:1.4;letter-spacing:-.01em;color:var(--ink);margin:0;max-width:40ch}
.au-quote em{font-style:italic;color:var(--accent)}
.au-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-family:var(--sans);font-size:13.5px;color:var(--ink-soft)}
.au-meta b{color:var(--ink);font-weight:700}
.au-dot{width:4px;height:4px;border-radius:50%;background:var(--line-2)}
.au-side{display:flex;gap:24px;border-left:1px solid var(--line);padding-left:28px}
.au-stat{display:flex;flex-direction:column;font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-mute)}
.au-stat b{font-family:var(--serif);font-style:italic;font-weight:500;font-size:26px;color:var(--accent);line-height:1;margin-bottom:5px;text-transform:none}

.nextprev{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.np{position:relative;background:var(--raise);border:1px solid var(--line);border-radius:16px;padding:20px 22px;cursor:pointer;text-decoration:none;display:flex;flex-direction:column;gap:8px;text-align:left;font-family:inherit;transition:border-color .2s,transform .25s var(--ease),box-shadow .25s;overflow:hidden}
.np:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line-2)}
.np-dir{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-mute);display:inline-flex;align-items:center;gap:7px}
.np-dir .arr{width:1em;height:1em}
.np h5{font-family:var(--serif);font-weight:500;font-size:19px;line-height:1.18;letter-spacing:-.015em;margin:0;color:var(--ink)}
.np-cl{font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-mute);margin-top:2px}
.np.next{text-align:right;border-color:var(--accent-ink);background:linear-gradient(200deg,var(--raise),color-mix(in srgb,var(--wash) 55%,var(--raise)))}
.np.next .np-dir{justify-content:flex-end;color:var(--accent)}
.np.next:hover .np-dir .arr{transform:translateX(4px);transition:transform .25s var(--spring)}
.np.next h5{color:var(--ink)}
.np.disabled{opacity:.5;pointer-events:none}

@media(max-width:760px){
  .sh-paths,.nextprev{grid-template-columns:1fr}
  .au-in{grid-template-columns:auto 1fr;gap:20px;padding:24px}
  .au-side{grid-column:1/-1;border-left:0;border-top:1px solid var(--line);padding:18px 0 0}
}