/* =========================================================================
   SEBLOCK — Sebastian Block · B2B SaaS & HealthTech Marketing
   Design system: Swiss editorial grid · neo-brutalist confidence ·
   working-document annotations · modular block system.
   ========================================================================= */

/* ---------- Tokens ---------- */
:root {
  --paper:      #F1EADA;   /* warm paper white */
  --paper-2:    #E8DFCB;   /* slightly deeper panel */
  --paper-line: #D8CDB4;   /* hairline on paper */
  --ink:        #16181F;   /* near-black graphite */
  --ink-soft:   #4A4D57;   /* muted body ink */
  --ink-faint:  #8A8577;   /* captions, meta */
  --cobalt:     #1E33CE;   /* primary ultramarine */
  --cobalt-deep:#141F73;   /* deep panels */
  --cobalt-ink: #0C1240;   /* near-black blue */
  --amber:      #F6B12C;   /* warm signal amber */
  --amber-mark: #FFC94D;   /* marker highlight */
  --teal:       #2F8C82;   /* muted healthcare teal (sparingly) */
  --paper-on-blue: #EDE8DC;

  --maxw: 1240px;
  --gut: clamp(20px, 5vw, 72px);
  --radius: 3px;

  --font-display: "Bricolage Grotesque", "Arial Narrow", sans-serif;
  --font-body: "Hanken Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --ease: cubic-bezier(.2, .7, .2, 1);
  --dur: .7s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  font-size: clamp(16px, 1.05vw, 18px);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; padding: 0; }

/* Paper grain overlay — fixed, non-interactive */
.grain {
  position: fixed; inset: 0; z-index: 1;
  pointer-events: none; opacity: .05; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
section { position: relative; z-index: 2; }

.section-pad { padding-block: clamp(72px, 11vw, 150px); }

/* ---------- Focus ---------- */
:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
  border-radius: 1px;
}
.on-blue :focus-visible { outline-color: var(--amber-mark); }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--ink); color: var(--paper);
  padding: 10px 16px; font-family: var(--font-mono); font-size: .8rem;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- Typographic primitives ---------- */
.label {
  font-family: var(--font-mono);
  font-size: .72rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-faint); font-weight: 500;
}
.on-blue .label { color: rgba(237,232,220,.6); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .6em;
  font-family: var(--font-mono); font-size: .76rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--cobalt);
  font-weight: 500;
}
.eyebrow::before {
  content: ""; width: 26px; height: 2px; background: var(--cobalt);
}
.on-blue .eyebrow { color: var(--amber); }
.on-blue .eyebrow::before { background: var(--amber); }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800; line-height: .98;
  letter-spacing: -.02em; color: var(--ink);
}
.on-blue h1, .on-blue h2, .on-blue h3, .on-blue p { color: var(--paper-on-blue); }

.h-sec {
  font-size: clamp(2.1rem, 6vw, 4.3rem);
  max-width: 16ch;
}
.lede {
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  color: var(--ink-soft); max-width: 54ch; line-height: 1.5;
}
.on-blue .lede { color: rgba(237,232,220,.82); }

/* marker highlight */
.mark {
  background: linear-gradient(transparent 58%, var(--amber-mark) 58% 94%, transparent 94%);
  padding-inline: .06em;
  box-decoration-break: clone; -webkit-box-decoration-break: clone;
}
.mark--teal { background: linear-gradient(transparent 58%, rgba(47,140,130,.42) 58% 94%, transparent 94%); }

/* hand-drawn underline */
.uline { position: relative; white-space: nowrap; }
.uline::after {
  content: ""; position: absolute; left: -2%; right: -2%; bottom: -.16em; height: .28em;
  background: no-repeat center/100% 100%
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 12' preserveAspectRatio='none'%3E%3Cpath d='M2 8 C40 3 70 10 100 6 S170 2 198 7' fill='none' stroke='%23F6B12C' stroke-width='3.4' stroke-linecap='round'/%3E%3C/svg%3E");
}

.dual {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-faint);
}
.dual b { color: var(--cobalt); font-weight: 600; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .6em;
  font-family: var(--font-mono); font-size: .82rem; letter-spacing: .04em;
  font-weight: 500; padding: .9em 1.35em;
  border: 2px solid var(--ink); background: var(--ink); color: var(--paper);
  border-radius: var(--radius);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), background .18s;
  box-shadow: 4px 4px 0 rgba(22,24,31,.16);
}
.btn:hover { transform: translate(-2px,-2px); box-shadow: 6px 6px 0 rgba(22,24,31,.22); }
.btn:active { transform: translate(0,0); box-shadow: 2px 2px 0 rgba(22,24,31,.2); }
.btn .arw { transition: transform .2s var(--ease); }
.btn:hover .arw { transform: translateX(3px); }

.btn--primary { background: var(--cobalt); border-color: var(--cobalt); color: #fff; box-shadow: 4px 4px 0 var(--cobalt-ink); }
.btn--primary:hover { box-shadow: 6px 6px 0 var(--cobalt-ink); }

.btn--ghost { background: transparent; color: var(--ink); box-shadow: none; }
.btn--ghost:hover { background: var(--ink); color: var(--paper); box-shadow: 4px 4px 0 rgba(22,24,31,.2); }

.on-blue .btn--amber { background: var(--amber); border-color: var(--amber); color: var(--cobalt-ink); box-shadow: 4px 4px 0 rgba(0,0,0,.28); }
.on-blue .btn--ghost { color: var(--paper-on-blue); border-color: var(--paper-on-blue); }
.on-blue .btn--ghost:hover { background: var(--paper-on-blue); color: var(--cobalt-ink); }

/* =========================================================================
   HEADER
   ========================================================================= */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(241,234,218,.82);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1.5px solid var(--ink);
  transition: box-shadow .3s;
}
.header.scrolled { box-shadow: 0 6px 0 -3px rgba(22,24,31,.12); }
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; height: 66px;
}
/* Wordmark */
.wordmark {
  font-family: var(--font-display); font-weight: 800; font-size: 1.5rem;
  letter-spacing: -.03em; display: inline-flex; align-items: center;
  line-height: 1;
}
.wordmark .se { color: var(--ink); }
.wordmark .block { color: var(--cobalt); }
.wordmark .dot { color: var(--amber); }
.wordmark--split .se { animation: seShift 2.4s var(--ease) 1s both; }
.wordmark--split .block { animation: blockShift 2.4s var(--ease) 1s both; }
@keyframes seShift {
  0%,100% { transform: translateX(0); } 22% { transform: translateX(-7px); } 55% { transform: translateX(-7px); }
}
@keyframes blockShift {
  0%,100% { transform: translateX(0); } 22% { transform: translateX(7px); } 55% { transform: translateX(7px); }
}

.nav { display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.nav__links { display: flex; gap: clamp(14px, 1.8vw, 28px); }
.nav__links a {
  font-family: var(--font-mono); font-size: .82rem; letter-spacing: .01em;
  color: var(--ink-soft); position: relative; padding-block: 4px;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--amber); transition: width .25s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { width: 100%; }

.nav__cta { padding: .62em 1.05em; font-size: .8rem; }

.menu-btn { display: none; }

/* Mobile menu */
.mobile-nav {
  position: fixed; inset: 66px 0 auto 0; z-index: 99;
  background: var(--cobalt); color: var(--paper-on-blue);
  transform: translateY(-115%); transition: transform .4s var(--ease);
  border-bottom: 2px solid var(--ink); padding: 8px var(--gut) 28px;
}
.mobile-nav.open { transform: translateY(0); }
.mobile-nav a {
  display: block; font-family: var(--font-display); font-weight: 700;
  font-size: 1.7rem; padding: 12px 0; border-bottom: 1px solid rgba(237,232,220,.2);
  color: var(--paper-on-blue);
}
.mobile-nav a .idx { font-family: var(--font-mono); font-size: .8rem; color: var(--amber); margin-right: .8em; font-weight: 500; }
.mobile-nav .btn { margin-top: 22px; width: 100%; justify-content: center; }

/* =========================================================================
   HERO
   ========================================================================= */
.hero { padding-top: clamp(40px, 7vw, 80px); padding-bottom: clamp(48px, 8vw, 96px); overflow: hidden; }
.hero__grid {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(28px, 4vw, 64px);
  align-items: center;
}
.hero__brandline {
  display: flex; align-items: center; gap: .8em; margin-bottom: clamp(20px, 3vw, 34px);
  flex-wrap: wrap;
}
.hero__brandline .tag {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-soft);
  border: 1.5px solid var(--ink); padding: .35em .7em; border-radius: 40px;
}
.hero h1 {
  font-size: clamp(2.6rem, 8.2vw, 6rem);
  line-height: .93; letter-spacing: -.035em;
}
.hero h1 .l2 { color: var(--cobalt); }
.hero h1 .l3 { position: relative; }
.hero__copy { margin-top: clamp(22px, 3vw, 32px); max-width: 50ch; }
.hero__direct {
  margin-top: 22px; font-family: var(--font-mono); font-size: .84rem;
  letter-spacing: .01em; color: var(--ink); line-height: 1.5;
  border-left: 3px solid var(--amber); padding-left: 14px;
}
.hero__ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-top: clamp(26px, 3.5vw, 38px); }
.hero__meta {
  margin-top: clamp(28px, 4vw, 44px); display: flex; gap: 26px; flex-wrap: wrap;
  border-top: 1.5px solid var(--paper-line); padding-top: 18px;
}
.hero__meta .item { font-family: var(--font-mono); font-size: .76rem; color: var(--ink-soft); line-height: 1.45; }
.hero__meta .item b { color: var(--ink); font-weight: 600; display: block; }

/* Hero visual — portrait + block system */
.hero__visual { position: relative; }
.rig {
  position: relative; aspect-ratio: 4/4.6; width: 100%;
  border: 2px solid var(--ink); background: var(--paper-2);
  border-radius: var(--radius);
  box-shadow: 10px 10px 0 var(--cobalt);
}
.rig::before { /* grid coordinates corner */
  content: "R1 · C1"; position: absolute; top: 8px; left: 10px;
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: .12em;
  color: var(--ink-faint);
}
.rig__portrait {
  position: absolute; inset: 12% 8% 8% 10%;
  background:
    linear-gradient(150deg, rgba(30,51,206,.14), rgba(47,140,130,.1)),
    var(--paper);
  border: 1.5px solid var(--ink); overflow: hidden; border-radius: 2px;
}
.rig__portrait img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05); mix-blend-mode: multiply; }
.hero .rig__portrait img { object-position: 50% 34%; filter: none; mix-blend-mode: normal; }
.rig__portrait figcaption {
  position: absolute; left: 0; bottom: 0; right: 0;
  font-family: var(--font-mono); font-size: .64rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--paper);
  background: var(--cobalt); padding: 5px 9px;
}
/* floating labelled blocks */
.chip {
  position: absolute; z-index: 4;
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .06em;
  text-transform: uppercase; font-weight: 500;
  background: var(--paper); border: 1.5px solid var(--ink); color: var(--ink);
  padding: .5em .7em; border-radius: 2px; box-shadow: 3px 3px 0 rgba(22,24,31,.18);
  white-space: nowrap;
}
.chip--amber { background: var(--amber); }
.chip--cobalt { background: var(--cobalt); color: #fff; border-color: var(--cobalt-ink); }
.chip--teal { background: var(--teal); color: #fff; }
.chip.c1 { top: 5%;  right: -6%; }
.chip.c2 { top: 30%; right: -12%; }
.chip.c3 { bottom: 26%; right: -8%; }
.chip.c4 { bottom: 4%; left: -8%; }
.chip.c5 { top: 46%; left: -12%; }

/* assemble-in animation */
.hero__visual .chip { opacity: 0; transform: translate(var(--dx,0), var(--dy,0)) scale(.9); }
.hero__visual.in-view .chip { opacity: 1; transform: translate(0,0) scale(1); transition: transform .8s var(--ease), opacity .6s ease; }
.chip.c1 { --dx: -30px; --dy: 20px; transition-delay: .15s !important; }
.chip.c2 { --dx: -34px; --dy: -8px; transition-delay: .28s !important; }
.chip.c3 { --dx: -24px; --dy: -20px; transition-delay: .41s !important; }
.chip.c4 { --dx: 30px; --dy: -14px; transition-delay: .54s !important; }
.chip.c5 { --dx: 28px; --dy: 10px; transition-delay: .67s !important; }

/* =========================================================================
   SECTION HEAD (shared)
   ========================================================================= */
.sec-head { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,.9fr); gap: clamp(20px,3vw,60px); align-items: end; margin-bottom: clamp(40px,6vw,72px); }
.sec-head .lede { align-self: end; }
@media (max-width: 820px){ .sec-head { grid-template-columns: 1fr; gap: 18px; } }

/* section index tag */
.sec-tag { display: block; margin-bottom: 18px; }

/* =========================================================================
   SECTION 1 — MARKETING SYSTEM (connected blocks)
   ========================================================================= */
.system { background: var(--paper-2); border-block: 2px solid var(--ink); }
.system__diagram {
  position: relative; display: grid;
  grid-template-columns: repeat(5, 1fr); gap: clamp(10px, 1.4vw, 20px);
  margin-top: 8px;
}
.sysblock {
  background: var(--paper); border: 1.5px solid var(--ink); border-radius: var(--radius);
  padding: 20px 16px 22px; position: relative; z-index: 2;
  box-shadow: 5px 5px 0 rgba(22,24,31,.1);
  opacity: 0; transform: translateY(26px);
}
.in-view .sysblock { opacity: 1; transform: translateY(0); transition: opacity .5s ease, transform .6s var(--ease); }
.sysblock:nth-child(1){ transition-delay:.05s } .sysblock:nth-child(2){ transition-delay:.16s }
.sysblock:nth-child(3){ transition-delay:.27s } .sysblock:nth-child(4){ transition-delay:.38s }
.sysblock:nth-child(5){ transition-delay:.49s }
.sysblock .n { font-family: var(--font-mono); font-size: .68rem; color: var(--ink-faint); }
.sysblock h3 { font-size: 1.35rem; margin: 10px 0 8px; letter-spacing: -.01em; }
.sysblock:nth-child(odd) h3 { color: var(--cobalt); }
.sysblock p { font-size: .9rem; color: var(--ink-soft); line-height: 1.45; }
.sysblock .dotmark { position: absolute; top: 16px; right: 14px; width: 9px; height: 9px; border-radius: 50%; background: var(--amber); }
/* connective line behind blocks */
.system__line { position: absolute; left: 0; right: 0; top: 34px; height: 3px; z-index: 1; overflow: visible; }
.system__line svg { width: 100%; height: 100%; overflow: visible; }
.system__line path { stroke: var(--cobalt); stroke-width: 2.5; fill: none; stroke-dasharray: 1400; stroke-dashoffset: 1400; }
.in-view .system__line path { animation: draw 1.6s var(--ease) .3s forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.system__foot { margin-top: 26px; }

/* =========================================================================
   SECTION 2 — WO ICH INS SPIEL KOMME (assembled modular composition)
   ========================================================================= */
.help__grid {
  display: grid; grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: minmax(0, auto); gap: 0;
  border: 2px solid var(--ink); border-radius: var(--radius); overflow: hidden;
  background: var(--ink);
}
.helpmod {
  background: var(--paper); padding: clamp(22px,2.6vw,34px);
  border: .75px solid var(--ink);
  display: flex; flex-direction: column; gap: 12px; position: relative;
  transition: background .25s var(--ease);
}
.helpmod:hover { background: var(--paper-2); }
.helpmod .num { font-family: var(--font-mono); font-size: .72rem; color: var(--cobalt); font-weight: 600; }
.helpmod h3 { font-size: clamp(1.25rem,2vw,1.7rem); }
.helpmod p { color: var(--ink-soft); font-size: .95rem; }
.helpmod .bracket { margin-top: auto; font-family: var(--font-mono); font-size: .7rem; color: var(--ink-faint); }
/* deliberate asymmetric spans */
.helpmod.m1 { grid-column: span 3; }
.helpmod.m2 { grid-column: span 3; }
.helpmod.m3 { grid-column: span 2; }
.helpmod.m4 { grid-column: span 2; background: var(--cobalt); }
.helpmod.m4 h3, .helpmod.m4 p { color: var(--paper-on-blue); }
.helpmod.m4 .num { color: var(--amber); }
.helpmod.m4 .bracket { color: rgba(237,232,220,.5); }
.helpmod.m4:hover { background: var(--cobalt-deep); }
.helpmod.m5 { grid-column: span 2; }
.helpmod.m6 { grid-column: span 6; }
.helpmod.m6 { flex-direction: row; align-items: baseline; gap: 24px; flex-wrap: wrap; }
.helpmod.m6 h3 { flex: 0 0 auto; }
.helpmod.m6 p { flex: 1 1 260px; }

/* =========================================================================
   SECTION 3 — ROOMS (expandable spaces)
   ========================================================================= */
.rooms { background: var(--cobalt); color: var(--paper-on-blue); border-block: 2px solid var(--ink); }
.rooms__list { display: grid; gap: 0; border-top: 1.5px solid rgba(237,232,220,.3); }
.room { border-bottom: 1.5px solid rgba(237,232,220,.3); }
.room summary {
  list-style: none; cursor: pointer; padding: clamp(20px,2.6vw,32px) 0;
  display: grid; grid-template-columns: auto 1fr auto; gap: clamp(14px,2.5vw,40px);
  align-items: center;
}
.room summary::-webkit-details-marker { display: none; }
.room .rnum { font-family: var(--font-mono); font-size: .8rem; color: var(--amber); font-weight: 600; }
.room .rname { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem,3.6vw,2.6rem); letter-spacing: -.02em; }
.room .rname small { display: block; font-family: var(--font-mono); font-size: .7rem; font-weight: 500; letter-spacing: .12em; color: rgba(237,232,220,.6); margin-top: 4px; }
.room .plus { width: 30px; height: 30px; position: relative; flex: 0 0 auto; border: 1.5px solid rgba(237,232,220,.5); border-radius: 3px; transition: background .2s, transform .3s var(--ease); }
.room .plus::before, .room .plus::after { content: ""; position: absolute; background: var(--paper-on-blue); left: 50%; top: 50%; }
.room .plus::before { width: 12px; height: 2px; transform: translate(-50%,-50%); }
.room .plus::after { width: 2px; height: 12px; transform: translate(-50%,-50%); transition: transform .3s var(--ease); }
.room[open] .plus { background: var(--amber); }
.room[open] .plus::before, .room[open] .plus::after { background: var(--cobalt-ink); }
.room[open] .plus::after { transform: translate(-50%,-50%) scaleY(0); }
.room[open] .plus { transform: rotate(90deg); }
.room__body { padding: 0 0 clamp(22px,2.6vw,34px) 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(170px,1fr)); gap: 10px; }
.room__body .d {
  font-family: var(--font-mono); font-size: .78rem; letter-spacing: .02em;
  border: 1px solid rgba(237,232,220,.3); border-radius: 3px; padding: 10px 12px;
  color: var(--paper-on-blue);
}
.room__body .d::before { content: "→ "; color: var(--amber); }

/* =========================================================================
   SECTION 4 — HOW I WORK (process blocks)
   ========================================================================= */
.process__grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(12px,1.6vw,20px); }
.step {
  border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--paper);
  padding: clamp(20px,2.2vw,28px); position: relative;
  box-shadow: 5px 5px 0 rgba(22,24,31,.1);
  opacity: 0; transform: translateY(24px);
}
.in-view .step { opacity: 1; transform: translateY(0); transition: opacity .5s, transform .6s var(--ease); }
.step:nth-child(1){transition-delay:.05s}.step:nth-child(2){transition-delay:.14s}
.step:nth-child(3){transition-delay:.23s}.step:nth-child(4){transition-delay:.32s}
.step:nth-child(5){transition-delay:.41s}
.step .s-num { font-family: var(--font-mono); font-weight: 700; font-size: 1.1rem; color: var(--cobalt); }
.step h3 { font-size: 1.25rem; margin: 8px 0 10px; }
.step p { font-size: .92rem; color: var(--ink-soft); }
.step .flag {
  margin-top: 14px; display: inline-block; font-family: var(--font-mono); font-size: .68rem;
  letter-spacing: .04em; background: var(--amber); color: var(--cobalt-ink);
  padding: .4em .6em; border-radius: 2px; font-weight: 500;
}
.step.st1{grid-column:span 4}.step.st2{grid-column:span 8}
.step.st3{grid-column:span 4}.step.st4{grid-column:span 4}.step.st5{grid-column:span 4}
.process__note {
  grid-column: 1 / -1; margin-top: 4px; padding: 22px 26px;
  background: var(--ink); color: var(--paper); border-radius: var(--radius);
  font-size: 1rem; display: flex; gap: 16px; align-items: baseline;
}
.process__note .k { font-family: var(--font-mono); font-size: .72rem; color: var(--amber); letter-spacing: .1em; flex: 0 0 auto; }

/* =========================================================================
   SECTION 5 — CAPABILITIES (hover / expand reveal)
   ========================================================================= */
.caps__grid { display: grid; grid-template-columns: repeat(5, 1fr); border: 2px solid var(--ink); border-radius: var(--radius); overflow: hidden; }
.cap { border-right: 1.5px solid var(--ink); background: var(--paper); }
.cap:last-child { border-right: none; }
.cap > summary {
  list-style: none; cursor: pointer; padding: clamp(20px,2vw,28px);
  display: flex; flex-direction: column; gap: 8px; min-height: 150px;
  transition: background .25s var(--ease), color .25s;
}
.cap > summary::-webkit-details-marker { display: none; }
.cap .c-num { font-family: var(--font-mono); font-size: .7rem; color: var(--ink-faint); }
.cap .c-name { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.4rem,2.3vw,1.95rem); letter-spacing: -.02em; }
.cap .c-hint { margin-top: auto; font-family: var(--font-mono); font-size: .68rem; color: var(--cobalt); }
.cap[open] > summary, .cap > summary:hover { background: var(--cobalt); }
.cap[open] > summary .c-name, .cap > summary:hover .c-name { color: #fff; }
.cap[open] > summary .c-num, .cap > summary:hover .c-num { color: rgba(255,255,255,.6); }
.cap[open] > summary .c-hint, .cap > summary:hover .c-hint { color: var(--amber); }
.cap__body { padding: 0 clamp(20px,2vw,28px) 24px; }
.cap__body p { font-size: .9rem; color: var(--ink-soft); }
.caps__foot { margin-top: 26px; font-size: 1.05rem; max-width: 60ch; }
.caps__foot .mono { font-family: var(--font-mono); font-size: .8rem; color: var(--cobalt); display: block; margin-bottom: 8px; letter-spacing: .06em; }

/* =========================================================================
   SECTION 6 — EXPERIENCE (editorial cases)
   ========================================================================= */
.cases { background: var(--paper-2); border-block: 2px solid var(--ink); }
.case {
  display: grid; grid-template-columns: auto 1fr auto; gap: clamp(18px,3vw,52px);
  padding: clamp(26px,3.4vw,44px) 0; border-bottom: 1.5px solid var(--paper-line);
  align-items: start;
}
.cases .case:last-of-type { border-bottom: none; }
.case .c-idx { font-family: var(--font-mono); font-size: .8rem; color: var(--cobalt); font-weight: 600; }
.case__main { max-width: 62ch; }
.case__main h3 { font-size: clamp(1.5rem,2.8vw,2.3rem); margin-bottom: 12px; }
.case__main p { color: var(--ink-soft); }
.case__slots { display: flex; flex-direction: column; gap: 8px; min-width: 190px; }
.case__slots .slot {
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .04em;
  color: var(--ink-faint); border: 1px dashed var(--paper-line);
  border-radius: 3px; padding: 8px 10px; text-transform: uppercase;
}
.case__slots .slot b { display: block; color: var(--ink); text-transform: none; font-family: var(--font-body); font-size: .82rem; letter-spacing: 0; margin-top: 2px; font-weight: 400; }
.cases__disclaimer { margin-top: 26px; font-family: var(--font-mono); font-size: .72rem; color: var(--ink-faint); }

/* =========================================================================
   SECTION 7 — WHY SEBASTIAN (editorial profile)
   ========================================================================= */
.why__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px,4vw,64px); align-items: start; }
.why h2 { font-size: clamp(1.9rem,4.4vw,3.2rem); line-height: 1.02; }
.why__quote {
  margin: 24px 0; font-size: clamp(1.1rem,1.6vw,1.32rem); line-height: 1.5;
  border-left: 3px solid var(--cobalt); padding-left: 18px; color: var(--ink);
}
.why__facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--paper-line); border: 1px solid var(--paper-line); margin-top: 22px; }
.why__facts li { background: var(--paper); padding: 12px 14px; font-size: .84rem; color: var(--ink-soft); }
.why__facts li b { color: var(--ink); font-family: var(--font-mono); font-size: .72rem; display: block; color: var(--cobalt); margin-bottom: 3px; letter-spacing: .04em; }
.why__portrait { position: relative; }
.why__portrait .rig { aspect-ratio: 4/5; box-shadow: 10px 10px 0 var(--amber); }
.why__portrait .rig::before { content: "FIG. 02 · WORKING"; }
.why__sig {
  position: absolute; right: -6px; bottom: -18px; z-index: 5;
  font-family: var(--font-display); font-weight: 800; font-size: 1.1rem;
  background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 3px;
  transform: rotate(-2deg);
}
.why__reveal { margin-top: 30px; font-family: var(--font-mono); font-size: .9rem; letter-spacing: .04em; color: var(--ink-soft); }
.why__reveal .be { color: var(--ink-faint); }

/* =========================================================================
   SECTION 8 — ENGAGEMENT MODELS
   ========================================================================= */
.models__grid { display: grid; grid-template-columns: repeat(3,1fr); gap: clamp(14px,1.8vw,22px); }
.model {
  border: 2px solid var(--ink); border-radius: var(--radius); background: var(--paper);
  padding: clamp(24px,2.6vw,34px); display: flex; flex-direction: column; gap: 14px;
  box-shadow: 6px 6px 0 rgba(22,24,31,.1); transition: transform .2s var(--ease), box-shadow .2s;
}
.model:hover { transform: translate(-3px,-3px); box-shadow: 9px 9px 0 var(--cobalt); }
.model .m-tag { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; color: var(--ink-faint); }
.model h3 { font-size: clamp(1.3rem,2vw,1.7rem); }
.model.feature { background: var(--cobalt); }
.model.feature h3, .model.feature p { color: var(--paper-on-blue); }
.model.feature .m-tag { color: var(--amber); }
.model.feature:hover { box-shadow: 9px 9px 0 var(--cobalt-ink); }
.model p { color: var(--ink-soft); font-size: .95rem; }
.model .m-idx { font-family: var(--font-mono); font-size: 2rem; font-weight: 700; color: var(--paper-line); line-height: 1; }
.model.feature .m-idx { color: rgba(237,232,220,.35); }

/* =========================================================================
   SECTION 9 — FINAL CTA
   ========================================================================= */
.final { background: var(--cobalt-ink); color: var(--paper-on-blue); border-top: 2px solid var(--ink); overflow: hidden; }
.final__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(30px,5vw,72px); align-items: center; }
.final h2 { font-size: clamp(2.2rem,6vw,4.6rem); line-height: .98; }
.final h2 .mark { color: var(--cobalt-ink); }
.final .lede { margin-top: 22px; }
.final__cta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.final__contact { display: flex; flex-direction: column; gap: 14px; }
.final__contact a, .final__contact span {
  font-family: var(--font-mono); font-size: .92rem; letter-spacing: .02em;
  display: flex; align-items: center; gap: 12px; padding: 14px 18px;
  border: 1.5px solid rgba(237,232,220,.25); border-radius: var(--radius);
  transition: border-color .2s, background .2s, transform .2s var(--ease);
}
.final__contact a:hover { border-color: var(--amber); transform: translateX(4px); }
.final__contact .ic { color: var(--amber); flex: 0 0 auto; }

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer { background: var(--ink); color: var(--paper); padding-block: clamp(48px,6vw,80px) 30px; border-top: 2px solid var(--cobalt); }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; margin-bottom: 40px; }
.footer .wordmark { font-size: 2.2rem; }
.footer .wordmark .se { color: var(--paper); }
.footer .wordmark .block { color: var(--amber); }
.footer__tag { margin-top: 12px; color: rgba(241,234,218,.6); font-family: var(--font-mono); font-size: .8rem; max-width: 34ch; line-height: 1.5; }
.footer h4 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--amber); margin-bottom: 14px; font-weight: 500; }
.footer__col a, .footer__col span { display: block; color: rgba(241,234,218,.8); font-size: .9rem; padding: 5px 0; }
.footer__col a:hover { color: var(--paper); }
.footer__bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 22px; border-top: 1px solid rgba(241,234,218,.15); font-family: var(--font-mono); font-size: .72rem; color: rgba(241,234,218,.5); }

/* =========================================================================
   RESPONSIVE
   ========================================================================= */
@media (max-width: 1000px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { order: -1; max-width: 420px; margin-inline: auto; }
  .why__grid { grid-template-columns: 1fr; }
  .why__portrait { max-width: 400px; }
  .final__grid { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .nav__links, .nav__cta { display: none; }
  .menu-btn { display: flex; flex-direction: column; gap: 5px; padding: 10px; }
  .menu-btn span { width: 24px; height: 2.5px; background: var(--ink); transition: transform .3s var(--ease), opacity .2s; }
  .menu-btn.open span:nth-child(1){ transform: translateY(7.5px) rotate(45deg); }
  .menu-btn.open span:nth-child(2){ opacity: 0; }
  .menu-btn.open span:nth-child(3){ transform: translateY(-7.5px) rotate(-45deg); }

  .system__diagram { grid-template-columns: 1fr 1fr; }
  .system__line { display: none; }
  .help__grid { grid-template-columns: 1fr; }
  .helpmod, .helpmod.m1,.helpmod.m2,.helpmod.m3,.helpmod.m4,.helpmod.m5,.helpmod.m6 { grid-column: 1 / -1; }
  .helpmod.m6 { flex-direction: column; }
  .caps__grid { grid-template-columns: 1fr; }
  .cap { border-right: none; border-bottom: 1.5px solid var(--ink); }
  .cap:last-child { border-bottom: none; }
  .process__grid { grid-template-columns: 1fr; }
  .step, .step.st1,.step.st2,.step.st3,.step.st4,.step.st5 { grid-column: 1 / -1; }
  .models__grid { grid-template-columns: 1fr; }
  .case { grid-template-columns: 1fr; gap: 14px; }
  .case__slots { flex-direction: row; flex-wrap: wrap; }
  .case__slots .slot { flex: 1 1 130px; }
  .why__facts { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .system__diagram { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .hero__meta { flex-direction: column; gap: 14px; }
  .btn { width: 100%; justify-content: center; }
  .hero__ctas .btn { width: auto; }
}

/* =========================================================================
   REDUCED MOTION
   ========================================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .hero__visual .chip { opacity: 1; transform: none; }
  .sysblock, .step { opacity: 1; transform: none; }
  .system__line path { stroke-dashoffset: 0; }
}