/* ==========================================================================
   ADNAN SYUKUR — PORTFOLIO STYLESHEET · v3.0
   Art direction: "Case File" — paper, ink, hard frames, mono annotations.
   Every value flows from the tokens below; there are no second palettes.
   Sections:
     01 Tokens (light + dark)    16 Timeline
     02 Reset & base             17 Notes
     03 Typography               18 Case studies & code
     04 Layout utilities         19 Tables
     05 Header & navigation      20 FAQ
     06 Theme toggle             21 Forms
     07 Hero (editorial frame)   22 Contact panel
     08 Marquee                  23 Footer
     09 Sections & headings      24 UI chrome (back-top, marker, chapters)
     10 Content layouts          25 Cursor & grain
     11 Rule list                26 Reveal & entrance
     12 Cards & grids            27 View transitions
     13 Stats band               28 Error pages
     14 Skills matrix            29 Reduced motion · Responsive · Print
     15 Tags
   ========================================================================== */

/* --------------------------------------------------------------------------
   01 · TOKENS
   -------------------------------------------------------------------------- */
:root {
  --ink: #0F1A26;            /* primary text / hard borders */
  --ink-soft: #33404B;       /* secondary text */
  --muted: #52606A;          /* tertiary / meta text */
  --paper: #EDE7D6;          /* page ground */
  --white: #F7F2E5;          /* card ground */
  --line: #B9B5A7;           /* soft borders */
  --blue: #2F6F5E;           /* primary accent (case-file green) */
  --blue-dark: #245747;
  --orange: #A23B2E;         /* secondary accent (rust) */
  --green: #2F6F5E;
  --yellow: #D4B85A;         /* focus ring */
  --navy: #0F1A26;           /* footer / dark panels */

  --sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --max: 1240px;
  --header: 76px;
  --shadow: 8px 8px 0 rgba(15, 26, 38, .14);
  --shadow-soft: 5px 5px 0 rgba(15, 26, 38, .12);
  --shadow-hard: 15px 16px 0 rgba(15, 26, 38, .12);

  --wash: rgba(15, 26, 38, .05);        /* hover tint on paper */
  --wash-strong: rgba(15, 26, 38, .10);
  --paper-glass: rgba(237, 231, 214, .9); /* header backdrop */
  --glow: rgba(212, 184, 90, .5);

  --on-ink: #F7F2E5;        /* text on ink/navy */
  --on-accent: #F7F2E5;     /* text on blue/orange */
}

:root[data-theme='dark'] {
  --ink: #F0F4EE;
  --ink-soft: #B7C4BE;
  --muted: #84939A;
  --paper: #080C12;
  --white: #111923;
  --line: #293544;
  --blue: #8BD7B3;
  --blue-dark: #72B996;
  --orange: #FF9A76;
  --green: #8BD7B3;
  --yellow: #F0D579;
  --navy: #05080D;

  --shadow: 8px 8px 0 rgba(0, 0, 0, .42);
  --shadow-soft: 5px 5px 0 rgba(0, 0, 0, .34);
  --shadow-hard: 15px 16px 0 rgba(0, 0, 0, .45);
  --wash: rgba(240, 244, 238, .055);
  --wash-strong: rgba(240, 244, 238, .10);
  --paper-glass: rgba(8, 12, 18, .88);
  --glow: rgba(240, 213, 121, .45);

  --on-ink: #F0F4EE;
  --on-accent: #07100D;
}

/* --------------------------------------------------------------------------
   02 · RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font: 16px/1.7 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .35s ease, color .35s ease;
}

/* page grid: fine drafting lines behind everything */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .22;
  background-image:
    linear-gradient(90deg, rgba(37, 38, 34, .055) 1px, transparent 1px),
    linear-gradient(rgba(37, 38, 34, .055) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(to bottom, #000, transparent 76%);
}
:root[data-theme='dark'] body::before { background-image: linear-gradient(90deg, rgba(231,225,208,.04) 1px, transparent 1px), linear-gradient(rgba(231,225,208,.04) 1px, transparent 1px); }

/* film grain: subtle paper texture, pointer-safe, above content */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  opacity: .055;
  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='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
:root[data-theme='dark'] body::after { opacity: .09; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }
::selection { color: var(--on-accent); background: var(--blue); }
:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }

/* --------------------------------------------------------------------------
   03 · TYPOGRAPHY
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 { margin: 0; color: var(--ink); font-family: var(--display); font-weight: 700; line-height: 1.08; letter-spacing: -.03em; }
h1 { max-width: 850px; font-size: clamp(3.2rem, 7vw, 6.4rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: 1.35rem; }
h4 { font-size: 1rem; }

.kicker, .section-label, .meta-label, .card-kicker, .case-study-label, .hero-index {
  color: var(--orange);
  font: 500 12px var(--mono);
  letter-spacing: .11em;
  text-transform: uppercase;
}
.kicker { margin: 0 0 22px; }
.lead { color: var(--ink); font-size: 1.4rem; line-height: 1.5; font-weight: 700; }
.prose p, .section-heading p, .page-hero p, .hero-copy { color: var(--ink-soft); }
.prose p:last-child { margin-bottom: 0; }
.muted-meta { color: var(--muted); font: 12px var(--mono); margin: 0 0 12px; }

/* --------------------------------------------------------------------------
   04 · LAYOUT UTILITIES
   -------------------------------------------------------------------------- */
.container { width: min(var(--max), calc(100% - 64px)); margin: 0 auto; }
.section { position: relative; padding: 118px 0; border-bottom: 1px solid var(--line); }
.section-last { border-bottom: 0; }
.section::before {
  content: '';
  position: absolute;
  left: max(16px, calc((100vw - var(--max)) / 2 - 28px));
  top: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, color-mix(in srgb, var(--ink) 20%, transparent) 12%, color-mix(in srgb, var(--ink) 20%, transparent) 88%, transparent);
  pointer-events: none;
}
.section > .container { position: relative; }
.section > .container::before {
  content: '';
  position: absolute;
  top: 0;
  left: -17px;
  width: 8px;
  height: 8px;
  background: var(--orange);
  transform: translateY(-4px);
}
.section-heading { position: relative; display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 32px; border-top: 1px solid var(--ink); padding-top: 16px; margin-bottom: 54px; }
.section-heading::after { content: ''; position: absolute; right: 0; top: -1px; width: 44px; height: 7px; background: var(--orange); transform: translateY(-3px); }
.section-heading h2 { max-width: 850px; }
.section-heading p { max-width: 760px; margin: 18px 0 0; font-size: .98rem; }
.section-heading > .section-label { margin: 0; padding-top: 8px; }

/* --------------------------------------------------------------------------
   05 · HEADER & NAVIGATION
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header);
  background: var(--paper-glass);
  border-bottom: 1px solid var(--ink);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow .3s ease, background .3s ease;
}
.site-header.is-scrolled { box-shadow: 0 14px 34px color-mix(in srgb, var(--ink) 10%, transparent); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 12px; }

.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; min-width: 0; font: 500 15px var(--mono); letter-spacing: .04em; }
.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: var(--on-accent);
  background: var(--blue);
  border: 1px solid var(--ink);
  font-size: 11px;
  flex-shrink: 0;
  transition: transform .35s ease, background .35s ease, color .35s ease;
}
.brand:hover .brand-mark { transform: rotate(-8deg) scale(1.08); background: var(--ink); color: var(--on-ink); }
.brand-label { color: var(--ink); font-weight: 700; white-space: nowrap; }

.site-nav { position: relative; display: flex; align-items: center; justify-content: center; gap: 1px; margin-left: auto; flex-wrap: nowrap; }
.site-nav::before {
  content: '';
  position: absolute;
  left: var(--dock-left, 0px);
  top: var(--dock-top, 0px);
  width: var(--dock-width, 0px);
  height: var(--dock-height, 0px);
  z-index: 0;
  opacity: var(--dock-opacity, 0);
  border: 1px solid color-mix(in srgb, var(--blue) 55%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--blue) 13%, transparent);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--blue) 14%, transparent);
  pointer-events: none;
  transform: scale(.96);
  transition: left .48s cubic-bezier(.16, 1, .3, 1), top .48s cubic-bezier(.16, 1, .3, 1), width .48s cubic-bezier(.16, 1, .3, 1), height .48s cubic-bezier(.16, 1, .3, 1), opacity .25s ease;
}
.site-nav a {
  position: relative;
  z-index: 1;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  padding: 10px 9px;
  white-space: nowrap;
  transition: color .2s, background .2s;
}
.site-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  left: 9px;
  right: 9px;
  bottom: 5px;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}
.site-nav a:hover, .site-nav a[aria-current='page'] { color: var(--ink); background: var(--wash); }
.site-nav a:hover::after, .site-nav a[aria-current='page']::after { transform: scaleX(1); transform-origin: left; }
.site-nav .nav-cta {
  color: var(--on-ink);
  background: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  padding: 11px 14px;
  margin-left: 6px;
  border: 1px solid var(--ink);
}
.site-nav .nav-cta:hover { color: var(--on-accent); background: var(--blue); border-color: var(--blue); }

.nav-meta { display: flex; align-items: center; gap: 10px; margin-left: 10px; }
.nav-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  color: var(--on-accent);
  background: var(--orange);
  border: 1px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  font: 700 10px var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
}
.nav-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--on-accent); box-shadow: 0 0 0 0 color-mix(in srgb, var(--on-accent) 55%, transparent); animation: pulse 2.2s infinite; }

.nav-toggle { display: none; border: 0; background: transparent; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--ink); transition: transform .25s, opacity .25s; }
.nav-toggle[aria-expanded='true'] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded='true'] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded='true'] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   06 · THEME TOGGLE
   -------------------------------------------------------------------------- */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  cursor: pointer;
  flex-shrink: 0;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.theme-toggle:hover { color: var(--on-accent); background: var(--ink); transform: rotate(-8deg); }
.theme-toggle:active { transform: rotate(-8deg) scale(.94); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme='dark'] .theme-toggle .icon-sun { display: block; }
:root[data-theme='dark'] .theme-toggle .icon-moon { display: none; }

/* --------------------------------------------------------------------------
   07 · HERO — EDITORIAL FRAME
   -------------------------------------------------------------------------- */
.hero, .page-hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--ink); background: var(--paper); }
.hero { padding: 88px 0 112px; }
.hero-editorial { min-height: min(820px, calc(100vh - var(--header))); display: flex; align-items: center; }
.hero-spread { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, .82fr); gap: 48px; align-items: center; }
@media (min-width: 1101px) {
  .hero-spread { grid-template-columns: minmax(0, 1fr) minmax(430px, .78fr); gap: 82px; }
  .hero-intro h1 { font-size: clamp(5.2rem, 10.5vw, 10rem); }
  .frame-backdrop { inset: 38px -12px -22px 34px; }
}
@media (max-width: 1100px) and (min-width: 821px) {
  .hero-spread { grid-template-columns: minmax(0, 1fr) minmax(300px, .78fr); gap: 32px; }
  .hero-intro h1 { font-size: clamp(4.8rem, 10vw, 8.4rem); }
}

.hero-intro { position: relative; z-index: 2; padding: 34px 0; min-width: 0; }
.hero-intro .kicker { display: block; color: var(--orange); margin-bottom: 52px; }
.hero-index { margin: 0 0 15px; color: var(--muted); }
.hero-intro h1 { max-width: none; color: var(--ink); font-size: clamp(5.8rem, 13vw, 12rem); line-height: .76; letter-spacing: -.08em; text-transform: uppercase; }
.hero-intro h1 span { display: block; }
.hero-intro h1 span:last-child { color: var(--blue); margin-left: 13%; }
.hero-copy { max-width: 510px; margin: 48px 0 0; font-size: 1.05rem; }
.hero-intro::after {
  content: '';
  position: absolute;
  left: -32px;
  top: 16%;
  width: 1px;
  height: 118px;
  background: var(--orange);
  transform: scaleY(.7);
  transform-origin: top;
}

.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border: 1px solid var(--ink);
  font: 500 12px var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.button:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-soft); }
.button:active { transform: translate(0, 0); box-shadow: none; }
.button-primary { color: var(--on-accent); background: var(--blue); border-color: var(--blue); }
.button-primary:hover { color: var(--on-ink); background: var(--ink); border-color: var(--ink); }
.button-secondary { color: var(--ink); background: var(--white); }
.button-secondary:hover { color: var(--on-accent); background: var(--ink); }

.hero-frame { position: relative; min-height: 610px; min-width: 0; transform: translate(var(--frame-x, 0), var(--frame-y, 0)) rotate(var(--frame-rotate, 1.5deg)); transition: transform .35s cubic-bezier(.2, .7, .2, 1); }
.hero-frame::before, .hero-frame::after { content: ''; position: absolute; pointer-events: none; z-index: 5; }
.hero-frame::before { inset: -16px 8px 16px -16px; border: 1px solid color-mix(in srgb, var(--ink) 45%, transparent); transform: rotate(-2deg); animation: register-float 8s ease-in-out infinite alternate; }
.hero-frame::after { inset: 15px -6px 48px 14px; border: 1px dashed color-mix(in srgb, var(--orange) 60%, transparent); transform: rotate(3deg); animation: register-pulse 5s ease-in-out infinite; }

.frame-backdrop { position: absolute; inset: 38px -22px -22px 24px; background: var(--blue); border: 1px solid var(--ink); transform: rotate(-4deg); animation: frame-shift 7s ease-in-out infinite alternate; }
.frame-paper {
  position: absolute;
  inset: 0 24px 32px 0;
  padding: 25px;
  background: var(--white);
  border: 1px solid var(--ink);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  isolation: isolate;
}
.frame-paper::before { content: ''; position: absolute; inset: 45% -15% -25% 30%; background: var(--blue); transform: rotate(-12deg); opacity: .13; z-index: 0; }
.frame-paper::after {
  content: '';
  position: absolute;
  inset: 74px 0 0;
  z-index: 0;
  pointer-events: none;
  opacity: .32;
  background-image:
    linear-gradient(90deg, transparent 49.8%, color-mix(in srgb, var(--ink) 20%, transparent) 50%, transparent 50.2%),
    linear-gradient(transparent 49.8%, color-mix(in srgb, var(--ink) 20%, transparent) 50%, transparent 50.2%);
  background-size: 112px 112px;
  mask-image: linear-gradient(to bottom, transparent, #000 35%, #000 75%, transparent);
}
.frame-paper > * { z-index: 1; position: relative; }

.frame-topline { position: relative; display: flex; justify-content: space-between; color: var(--ink); border-bottom: 1px solid color-mix(in srgb, var(--ink) 35%, transparent); padding-bottom: 12px; font: 10px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.frame-topline::before, .frame-topline::after { content: ''; position: absolute; top: -8px; width: 16px; height: 16px; border-top: 1px solid var(--orange); }
.frame-topline::before { left: -9px; border-left: 1px solid var(--orange); }
.frame-topline::after { right: -9px; border-right: 1px solid var(--orange); }

.frame-art { position: absolute; inset: 92px 32px 62px; overflow: hidden; z-index: 1; }
.art-letter {
  position: absolute;
  left: -12%;
  bottom: -14%;
  color: var(--blue);
  font: 800 27rem/.65 var(--display);
  letter-spacing: -.18em;
  opacity: .9;
  text-shadow: 10px 10px 0 color-mix(in srgb, var(--ink) 8%, transparent);
  animation: art-breathe 6s ease-in-out infinite alternate;
}
.art-line { position: absolute; left: 21%; top: 12%; width: 1px; height: 92%; background: var(--ink); transform: rotate(25deg); }
.art-orbit { position: absolute; left: 17%; top: 20%; width: 66%; aspect-ratio: 1; border: 1px solid var(--orange); border-radius: 50%; transform: rotate(-24deg) scaleY(.36); animation: orbit-drift 9s ease-in-out infinite alternate; }
.art-dot { position: absolute; left: 64%; top: 31%; width: 18px; height: 18px; background: var(--orange); border: 1px solid var(--ink); border-radius: 50%; }

.frame-caption { position: absolute; right: 24px; bottom: 24px; display: grid; gap: 4px; color: var(--ink); border-top: 1px solid var(--ink); padding-top: 10px; font: 11px var(--mono); text-align: right; text-transform: uppercase; }
.frame-caption strong { font: 800 16px var(--display); text-transform: none; letter-spacing: 0; }
.frame-note { position: absolute; left: -54px; bottom: 8px; padding: 13px 15px; color: var(--on-ink); background: var(--ink); box-shadow: 6px 6px 0 var(--orange); font: 11px/1.5 var(--mono); transform: rotate(-4deg); z-index: 6; }
.frame-note .meta-label { color: var(--orange); }
.frame-stamp {
  position: absolute;
  right: -13px;
  top: 60px;
  z-index: 6;
  display: grid;
  place-items: center;
  width: 86px;
  height: 86px;
  color: var(--on-accent);
  background: var(--orange);
  border: 1px solid var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  border-radius: 50%;
  font: 700 10px/1.2 var(--mono);
  text-align: center;
  text-transform: uppercase;
  transform: rotate(11deg);
  animation: availability-pulse 3s ease-in-out infinite;
}

/* inner pages */
.page-hero { padding: 106px 0 78px; }
.page-hero::before { content: ''; position: absolute; left: 0; top: 28%; width: 18%; height: 1px; background: var(--orange); box-shadow: 0 8px 0 color-mix(in srgb, var(--orange) 35%, transparent), 0 16px 0 color-mix(in srgb, var(--orange) 16%, transparent); }
.page-hero .container { position: relative; }
.page-hero .container::after { content: 'ARCHIVE / FIELD NOTES'; position: absolute; right: 0; top: 0; color: var(--muted); font: 10px var(--mono); letter-spacing: .12em; }
.page-hero h1 { max-width: 1000px; font-size: clamp(2.8rem, 6vw, 5.6rem); }
.page-hero p { max-width: 680px; margin: 22px 0 0; font-size: 1.15rem; }
.page-hero .kicker { margin-bottom: 18px; }

/* --------------------------------------------------------------------------
   08 · MARQUEE
   -------------------------------------------------------------------------- */
.marquee { overflow: hidden; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); background: var(--white); }
.marquee-track { display: flex; width: max-content; animation: marquee 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-group { display: flex; align-items: center; padding: 15px 0; }
.marquee-group span { padding: 0 24px; color: var(--ink-soft); font: 600 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; white-space: nowrap; }
.marquee-group i { font-style: normal; color: var(--orange); font-size: 11px; }

/* --------------------------------------------------------------------------
   09 · CONTENT LAYOUTS
   -------------------------------------------------------------------------- */
.intro-grid, .split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.intro-grid .lead { margin-top: 0; padding-right: 18px; font-size: clamp(1.35rem, 2.4vw, 2rem); line-height: 1.35; }
.prose { max-width: 620px; }
.prose h3 { margin-bottom: 12px; }
.prose p { margin: 0 0 16px; }

/* --------------------------------------------------------------------------
   10 · RULE LIST
   -------------------------------------------------------------------------- */
.rule-list { margin: 0; padding: 0; list-style: none; border-top: 2px solid var(--ink); }
.rule-list li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 22px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left .35s ease, background-color .35s ease;
}
.rule-list li:hover { padding-left: 12px; background: var(--wash); }
.rule-list strong { color: var(--blue-dark); font: 700 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.rule-list span { color: var(--ink-soft); font-size: 14px; }

/* --------------------------------------------------------------------------
   11 · CARDS & GRIDS
   -------------------------------------------------------------------------- */
.feature-grid, .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.feature-card, .card {
  position: relative;
  padding: 25px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--ink);
  transition: transform .45s cubic-bezier(.2, .7, .2, 1), box-shadow .45s ease, border-color .3s ease;
}
.feature-card::before, .card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s cubic-bezier(.2, .7, .2, 1);
}
.feature-card:hover::before, .card:hover::before { transform: scaleX(1); }
.feature-card:hover, .card:hover { transform: translate(-4px, -4px); border-color: var(--blue); box-shadow: var(--shadow); }
.feature-card > *, .card > * { position: relative; z-index: 1; }
.feature-card { min-height: 280px; display: flex; flex-direction: column; justify-content: space-between; }
.feature-card h3 { margin: 38px 0 12px; }
.feature-card p, .card p { max-width: 48ch; margin: 0; color: var(--ink-soft); font-size: 14px; }
.feature-card h3, .card h3 { text-wrap: balance; }

.card-top { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.card-kicker { margin: 0 0 12px; transition: letter-spacing .35s ease; }
.card:hover .card-kicker { letter-spacing: .16em; }
.card h3 { margin-bottom: 10px; }
.card-link {
  display: inline-block;
  margin-top: 26px;
  color: var(--blue-dark);
  font: 500 12px var(--mono);
  position: relative;
  padding-bottom: 5px;
  transition: color .2s ease, transform .2s ease;
}
.card-link::after { content: ''; position: absolute; left: 0; bottom: 0; width: 24px; height: 1px; background: var(--orange); transition: width .35s ease; }
.card-link:hover { color: var(--orange); transform: translateX(4px); }
.card:hover .card-link::after { width: 100%; }
.project-link { margin-top: 18px; }
.card-footer { display: flex; flex-direction: column; margin-top: auto; }
.project-card { min-height: 330px; display: flex; flex-direction: column; }
.project-card .card-footer { margin-top: auto; }
.github-card { min-height: 310px; }
.github-card .card-footer { gap: 4px; }
.github-actions { margin-top: 30px; }

.project-index {
  position: relative;
  padding: 58px 0 32px;
  background: var(--navy);
  color: var(--on-ink);
  border-bottom: 1px solid var(--orange);
  overflow: hidden;
}
.project-index::before { content: 'ARCHIVE / 11'; position: absolute; right: 32px; top: 20px; color: color-mix(in srgb, var(--on-ink) 35%, transparent); font: 10px var(--mono); letter-spacing: .14em; }
.project-index::after { content: ''; position: absolute; right: 9%; bottom: -110px; width: 300px; height: 220px; border: 1px solid color-mix(in srgb, var(--blue) 22%, transparent); border-radius: 50%; transform: rotate(-18deg); pointer-events: none; }
.project-index-top { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .8fr); gap: 48px; align-items: end; }
.project-index h2 { max-width: 620px; margin-top: 12px; color: var(--on-ink); font-size: clamp(2rem, 4vw, 3.6rem); }
.project-index-top > p { max-width: 510px; margin: 0 0 5px; color: color-mix(in srgb, var(--on-ink) 70%, transparent); font-size: .95rem; }
.project-filters { position: relative; z-index: 1; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }
.project-filter { display: inline-flex; align-items: center; gap: 8px; padding: 10px 13px; color: color-mix(in srgb, var(--on-ink) 72%, transparent); background: transparent; border: 1px solid color-mix(in srgb, var(--on-ink) 22%, transparent); cursor: pointer; font: 500 11px var(--mono); letter-spacing: .03em; transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease; }
.project-filter span { color: var(--orange); font-size: 10px; }
.project-filter:hover { color: var(--on-ink); border-color: var(--blue); transform: translateY(-2px); }
.project-filter.is-active { color: var(--on-accent); background: var(--blue); border-color: var(--blue); }
.project-filter.is-active span { color: var(--on-accent); }
.project-filter-status { position: relative; z-index: 1; margin: 14px 0 0; color: color-mix(in srgb, var(--on-ink) 48%, transparent); font: 11px var(--mono); }
.portfolio-project.is-filtered-out { display: none; }
.portfolio-project.is-filtered-in { animation: filter-in .35s ease both; }

.card-grid.two .card:nth-child(2n) { transform: translateY(24px); }
.card-grid.two .card:nth-child(2n):hover { transform: translate(-4px, 20px); }
.card-grid.two .card:first-child { border-top: 5px solid var(--blue); }
.card-grid.two .card:nth-child(2) { border-top: 5px solid var(--orange); }
.card-grid.two .card:first-child .status { color: var(--blue-dark); border-color: var(--blue); }
.card-grid.two .card:nth-child(2) .status { color: var(--orange); border-color: var(--orange); }

.status {
  flex: 0 0 auto;
  width: fit-content;
  padding: 4px 9px;
  color: var(--blue-dark);
  border: 1px solid var(--blue);
  background: transparent;
  font: 500 10px var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.status.progress { color: var(--orange); border-color: var(--orange); }

/* --------------------------------------------------------------------------
   12 · STATS BAND
   -------------------------------------------------------------------------- */
.stats-band { background: var(--paper); border-bottom: 1px solid var(--line); }
.stats-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; border-top: 1px solid var(--ink); padding-top: 14px; margin-bottom: 34px; }
.stats-head .section-label { margin: 0; padding-top: 8px; }
.stats-head p:last-child { max-width: 560px; margin: 0 0 4px; color: var(--ink-soft); font-size: .95rem; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--ink); background: var(--white); box-shadow: var(--shadow-soft); }
.stat { display: grid; gap: 10px; align-content: start; padding: 34px 28px; border-right: 1px solid var(--ink); }
.stat:last-child { border-right: 0; }
.stat-value { color: var(--ink); font: 800 clamp(2.8rem, 6vw, 4.6rem)/1 var(--display); letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.stat-label { color: var(--blue-dark); font: 700 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.stat-note { margin: 0; color: var(--muted); font: 12px/1.5 var(--mono); }

/* --------------------------------------------------------------------------
   13 · SKILLS MATRIX
   -------------------------------------------------------------------------- */
.skill-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.skill-group { padding: 26px 24px 22px; background: var(--white); border: 1px solid var(--ink); transition: box-shadow .3s ease, transform .3s ease; }
.skill-group:hover { box-shadow: var(--shadow-soft); transform: translate(-2px, -2px); }
.skill-group h3 { margin: 0 0 20px; padding-bottom: 10px; border-bottom: 1px solid var(--ink); color: var(--blue-dark); font: 700 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.skill { margin-bottom: 16px; }
.skill:last-child { margin-bottom: 0; }
.skill-head { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 7px; font: 500 12px var(--mono); }
.skill-head span:first-child { color: var(--ink); }
.skill-level { color: var(--orange); text-transform: uppercase; font-size: 10px; letter-spacing: .06em; }
.skill-track { position: relative; height: 6px; background: var(--paper); border: 1px solid var(--ink); }
.skill-fill { display: block; height: 100%; width: 0; background: var(--blue); transition: width 1.1s cubic-bezier(.2, .7, .2, 1); }
.skill-legend { margin: 22px 0 0; color: var(--muted); font: 11px var(--mono); letter-spacing: .04em; }

/* --------------------------------------------------------------------------
   14 · TAGS
   -------------------------------------------------------------------------- */
.stack-group { padding-top: 20px; border-top: 2px solid var(--ink); }
.stack-group h3 { margin-bottom: 18px; font-size: 1rem; letter-spacing: 0; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { padding: 7px 10px; color: var(--ink-soft); background: var(--paper); border: 1px solid var(--ink); font: 400 12px var(--mono); }

/* --------------------------------------------------------------------------
   15 · TIMELINE
   -------------------------------------------------------------------------- */
.timeline { position: relative; margin-left: 18px; border-left: 1px solid var(--line); }
.timeline-item { position: relative; padding: 0 0 54px 44px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 4px;
  width: 11px;
  height: 11px;
  background: var(--orange);
  border: 3px solid var(--paper);
  outline: 1px solid var(--orange);
  border-radius: 50%;
}
.timeline-meta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 12px; color: var(--muted); font: 400 12px var(--mono); }
.timeline-item h3 { margin-bottom: 5px; }
.organization { margin: 0 0 18px; color: var(--blue); font-weight: 700; }
.timeline-item ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 14px; }
.timeline-item li { padding-left: 5px; margin-bottom: 8px; }

/* --------------------------------------------------------------------------
   16 · NOTES
   -------------------------------------------------------------------------- */
.note { margin: 20px 0 0; padding: 16px 18px; color: var(--ink-soft); background: var(--wash); border-left: 4px solid var(--blue); font-size: 14px; }

/* --------------------------------------------------------------------------
   17 · CASE STUDIES & CODE
   -------------------------------------------------------------------------- */
.case-study { display: grid; grid-template-columns: 230px 1fr; gap: 48px; padding: 32px 0; border-top: 1px solid var(--line); }
.case-study:last-child { border-bottom: 1px solid var(--line); }
.case-study-label { color: var(--orange); font: 500 12px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.case-study h3 { margin-bottom: 14px; }
.case-study p { max-width: 720px; margin: 0; color: var(--ink-soft); }
.case-study .rule-list li { grid-template-columns: 110px 1fr; }
.code, .architecture { margin: 0; padding: 24px; overflow-x: auto; font: 12px/1.65 var(--mono); }
.code { color: var(--on-ink); background: var(--navy); border: 1px solid color-mix(in srgb, var(--blue) 40%, transparent); }
.architecture { color: var(--ink); background: var(--white); border: 1px solid var(--ink); }

/* --------------------------------------------------------------------------
   18 · TABLES
   -------------------------------------------------------------------------- */
.table-wrap { overflow-x: auto; border-top: 2px solid var(--ink); }
table { width: 100%; min-width: 650px; border-collapse: collapse; }
th, td { padding: 16px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { color: var(--ink); background: var(--wash); font: 700 11px var(--mono); letter-spacing: .07em; text-transform: uppercase; }
td { color: var(--ink-soft); font-size: 14px; }
td:first-child { color: var(--ink); font-weight: 700; }

/* --------------------------------------------------------------------------
   19 · FAQ
   -------------------------------------------------------------------------- */
.faq { max-width: 850px; }
details { border-top: 1px solid var(--line); }
details:last-child { border-bottom: 1px solid var(--line); }
summary { display: flex; justify-content: space-between; gap: 20px; padding: 21px 0; cursor: pointer; color: var(--ink); font-weight: 800; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; color: var(--blue); font: 500 20px var(--mono); }
details[open] summary::after { content: '−'; }
details p { max-width: 720px; margin: -4px 0 22px; color: var(--ink-soft); font-size: 14px; }

/* --------------------------------------------------------------------------
   20 · FORMS
   -------------------------------------------------------------------------- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; max-width: 820px; }
.form-field { display: grid; gap: 8px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { color: var(--ink); font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.form-field input, .form-field textarea {
  width: 100%;
  padding: 13px 14px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--ink);
  font: 15px/1.5 var(--sans);
}
.form-field textarea { min-height: 150px; resize: vertical; }
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--muted); }
.form-field input:focus-visible, .form-field textarea:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }
.form-note { margin: 14px 0 0; color: var(--muted); font: 11px/1.5 var(--mono); }

/* --------------------------------------------------------------------------
   21 · CONTACT PANEL
   -------------------------------------------------------------------------- */
.contact-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
  padding: 42px;
  color: var(--on-ink);
  background: var(--ink);
  border: 1px solid var(--ink);
  box-shadow: 12px 12px 0 var(--blue);
  overflow: hidden;
}
.contact-panel::before { content: ''; position: absolute; width: 260px; height: 260px; right: -90px; top: -130px; border: 1px solid color-mix(in srgb, var(--on-ink) 12%, transparent); border-radius: 50%; box-shadow: 0 0 0 25px color-mix(in srgb, var(--on-ink) 3%, transparent), 0 0 0 50px color-mix(in srgb, var(--on-ink) 2%, transparent); transform: rotate(20deg); }
.contact-panel::after { content: 'LET’S MAKE SOMETHING USEFUL'; position: absolute; right: 34px; bottom: 18px; color: color-mix(in srgb, var(--on-ink) 35%, transparent); font: 10px var(--mono); letter-spacing: .14em; transform: rotate(-90deg); transform-origin: right bottom; }
.contact-panel > * { position: relative; z-index: 1; }
.contact-panel h2, .contact-panel p { color: var(--on-ink); }
.contact-panel h2 { max-width: 680px; font-size: clamp(2.5rem, 5vw, 4.5rem); }
.contact-panel p { max-width: 600px; opacity: .82; margin: 12px 0 0; }
.contact-panel .button-primary { color: var(--on-ink); background: var(--blue); border-color: var(--blue); }
.contact-panel .button-primary:hover { color: var(--on-accent); background: var(--orange); border-color: var(--orange); }
.contact-panel .button-secondary { color: var(--on-ink); border-color: color-mix(in srgb, var(--on-ink) 25%, transparent); background: transparent; }
.contact-panel .button-secondary:hover { background: var(--on-ink); color: var(--navy); }

/* --------------------------------------------------------------------------
   22 · FOOTER
   -------------------------------------------------------------------------- */
.site-footer { position: relative; padding: 54px 0 26px; background: var(--navy); color: color-mix(in srgb, var(--on-ink) 78%, transparent); border-top: 1px solid var(--orange); overflow: hidden; }
.site-footer::before { content: 'AS / 2026'; position: absolute; right: 32px; top: 18px; color: color-mix(in srgb, var(--on-ink) 28%, transparent); font: 10px var(--mono); letter-spacing: .12em; }
.site-footer::after { content: ''; position: absolute; left: 45%; bottom: -94px; width: 260px; height: 180px; border: 1px solid color-mix(in srgb, var(--on-ink) 13%, transparent); transform: rotate(-18deg); pointer-events: none; }
.footer-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-brand p { max-width: 340px; margin: 18px 0; font: 12px/1.6 var(--mono); }
.footer-brand .brand-mark { border-color: color-mix(in srgb, var(--on-ink) 20%, transparent); }
.footer-col { display: grid; gap: 10px; align-content: start; }
.footer-col h4 { margin-bottom: 8px; color: var(--on-ink); font: 700 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.footer-col a { color: inherit; font: 400 13px var(--mono); transition: color .2s ease, padding-left .2s ease; }
.footer-col a:hover { color: var(--orange); padding-left: 6px; }
.footer-col span { color: color-mix(in srgb, var(--on-ink) 55%, transparent); font: 400 12px var(--mono); }
.footer-grid .nav-status { box-shadow: 4px 4px 0 color-mix(in srgb, var(--on-ink) 18%, transparent); }
.footer-inner { position: relative; z-index: 1; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid color-mix(in srgb, var(--on-ink) 16%, transparent); padding-top: 20px; }
.footer-inner p { margin: 0; font: 400 11px var(--mono); color: color-mix(in srgb, var(--on-ink) 55%, transparent); }

/* --------------------------------------------------------------------------
   23 · UI CHROME — back-to-top, scroll marker, chapter nav
   -------------------------------------------------------------------------- */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--on-ink);
  background: var(--ink);
  border: 1px solid var(--ink);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s, background .2s ease, color .2s ease;
  z-index: 10;
}
.back-top:hover { color: var(--on-accent); background: var(--blue); border-color: var(--blue); }
.back-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

.scroll-marker { position: fixed; z-index: 10000; top: 0; left: 0; width: 100%; height: 3px; pointer-events: none; background: linear-gradient(90deg, var(--blue), var(--orange)); transform-origin: left center; box-shadow: 0 1px 10px var(--glow); }

.chapter-nav { position: fixed; right: 28px; top: 50%; transform: translateY(-50%); z-index: 40; display: grid; gap: 4px; }
.chapter-nav-item {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 7px 0;
  background: none;
  border: 0;
  cursor: pointer;
  color: var(--muted);
  font: 500 10px var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.chapter-nav-item::before { content: ''; width: 9px; height: 9px; border: 1px solid var(--ink); background: var(--paper); transition: background .2s ease, border-color .2s ease, transform .2s ease; }
.chapter-nav-item:hover::before, .chapter-nav-item.is-active::before { background: var(--orange); border-color: var(--orange); transform: scale(1.2); }
.chapter-nav-item span { max-width: 0; overflow: hidden; white-space: nowrap; opacity: 0; transition: opacity .25s ease, max-width .25s ease; }
.chapter-nav:hover .chapter-nav-item span { max-width: 150px; opacity: 1; }
.chapter-nav-item.is-active { color: var(--ink); }
.chapter-nav-item.is-active span { max-width: 150px; opacity: 1; }
@media (max-width: 1380px) {
  .chapter-nav-item span { display: none; }
  .chapter-nav-item.is-active span { display: none; }
  .chapter-nav { gap: 10px; }
}

/* --------------------------------------------------------------------------
   24 · CURSOR
   -------------------------------------------------------------------------- */
.cursor-dot { position: fixed; top: 0; left: 0; pointer-events: none; border-radius: 50%; z-index: 10001; opacity: 0; }
html.has-cursor, html.has-cursor a, html.has-cursor button, html.has-cursor summary, html.has-cursor label { cursor: none; }
html.has-cursor input, html.has-cursor textarea { cursor: auto; }
html.has-cursor .cursor-dot { width: 6px; height: 6px; background: var(--orange); transition: transform .18s ease, background-color .18s ease; }
html.has-cursor .cursor-dot.is-hover { transform: scale(1.6); background: var(--blue); }

/* --------------------------------------------------------------------------
   25 · REVEAL & ENTRANCE
   -------------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity .65s ease, transform .65s cubic-bezier(.2, .7, .2, 1); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal:nth-child(2) { transition-delay: .08s; }
.reveal:nth-child(3) { transition-delay: .16s; }
.reveal:nth-child(4) { transition-delay: .24s; }

/* staged page-load entrance (only when JS ran — html.js.is-ready) */
html.js.is-ready .hero-intro > * {
  opacity: 0;
  animation: rise .7s cubic-bezier(.2, .7, .2, 1) forwards;
}
html.js.is-ready .hero-intro > *:nth-child(1) { animation-delay: .08s; }
html.js.is-ready .hero-intro > *:nth-child(2) { animation-delay: .16s; }
html.js.is-ready .hero-intro > *:nth-child(3) { animation-delay: .24s; }
html.js.is-ready .hero-intro > *:nth-child(4) { animation-delay: .34s; }
html.js.is-ready .hero-intro > *:nth-child(5) { animation-delay: .44s; }
html.js.is-ready .hero-intro > *:nth-child(6) { animation-delay: .54s; }
/* the hero frame keeps its pointer-tilt transform, so it enters via the page fade */
html.js.is-ready .page-hero .container > * { opacity: 0; animation: rise .7s cubic-bezier(.2, .7, .2, 1) forwards; }
html.js.is-ready .page-hero .container > *:nth-child(1) { animation-delay: .1s; }
html.js.is-ready .page-hero .container > *:nth-child(2) { animation-delay: .2s; }
html.js.is-ready .page-hero .container > *:nth-child(3) { animation-delay: .3s; }
html.js.is-ready .page-hero .container > *:nth-child(4) { animation-delay: .4s; }

/* page-load slide (class toggled by JS) */
body.page-loading main, body.page-loading .site-footer { opacity: 0; transform: translateX(28px); }
body main, body .site-footer { will-change: opacity, transform; transition: opacity .72s ease, transform .72s cubic-bezier(.16, 1, .3, 1); }
body.page-leaving main, body.page-leaving .site-footer { opacity: 0; transform: translateX(-28px); }

/* --------------------------------------------------------------------------
   26 · VIEW TRANSITIONS
   -------------------------------------------------------------------------- */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: vt-out .38s cubic-bezier(.4, 0, .2, 1) both; }
::view-transition-new(root) { animation: vt-in .5s cubic-bezier(.2, .7, .2, 1) both; }

/* --------------------------------------------------------------------------
   27 · ERROR PAGES
   -------------------------------------------------------------------------- */
.error-page .error-hero { overflow: hidden; padding: 116px 0 94px; border-bottom: 1px solid var(--ink); }
.error-page .page-hero .container::after { display: none; }
.error-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .72fr); gap: 72px; align-items: center; }
.error-hero-copy { position: relative; z-index: 1; }
.error-hero-copy h1 { max-width: 720px; font-size: clamp(4.5rem, 9vw, 8.5rem); line-height: .84; }
.error-hero-copy p:last-child { max-width: 580px; margin: 30px 0 0; color: var(--ink-soft); font-size: 1.1rem; }
.error-display {
  position: relative;
  min-height: 310px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--ink);
  box-shadow: 14px 14px 0 var(--blue);
  transform: rotate(2deg);
  isolation: isolate;
}
.error-display::before { content: ''; position: absolute; inset: 16px -12px -12px 16px; z-index: -1; border: 1px dashed var(--orange); transform: rotate(-5deg); }
.error-display::after {
  content: '';
  position: absolute;
  inset: 58px 0 0;
  z-index: -1;
  opacity: .32;
  background-image:
    linear-gradient(90deg, transparent 49.7%, color-mix(in srgb, var(--ink) 18%, transparent) 50%, transparent 50.3%),
    linear-gradient(transparent 49.7%, color-mix(in srgb, var(--ink) 18%, transparent) 50%, transparent 50.3%);
  background-size: 88px 88px;
  mask-image: linear-gradient(to bottom, transparent, #000 35%, transparent);
}
.error-display-index { color: var(--orange); font: 11px var(--mono); letter-spacing: .12em; }
.error-display strong { margin-left: -10px; color: var(--blue); font: 800 clamp(8rem, 17vw, 15rem)/.7 var(--display); letter-spacing: -.12em; text-shadow: 9px 9px 0 color-mix(in srgb, var(--ink) 8%, transparent); }
.error-display-caption { align-self: flex-end; padding-top: 12px; border-top: 1px solid var(--ink); color: var(--ink-soft); font: 11px/1.5 var(--mono); text-align: right; text-transform: uppercase; }
.error-page .error-content { align-items: start; }
.error-page .error-message h2 { font-size: clamp(2rem, 4vw, 3rem); }
.error-page .error-details { position: relative; border: 1px solid var(--ink); background: var(--white); padding: 24px; box-shadow: 7px 7px 0 color-mix(in srgb, var(--blue) 50%, transparent); }
.error-page .error-details::before { content: 'STATUS REPORT'; position: absolute; top: -10px; right: 18px; padding: 0 8px; color: var(--orange); background: var(--paper); font: 10px var(--mono); letter-spacing: .1em; }
.error-page .error-details h3 { margin-bottom: 18px; font-size: 1.1rem; }
.error-page .error-details dl { margin: 0; }
.error-page .error-details dt { margin: 12px 0 4px; color: var(--ink); font-size: 14px; font-weight: 700; }
.error-page .error-details dd { margin: 0 0 12px; padding-left: 12px; color: var(--ink-soft); font-size: 14px; }
.error-page .error-details dd ul { margin: 8px 0; padding-left: 18px; }
.error-page .error-suggestions { list-style: none; margin: 24px 0; padding: 0; }
.error-page .error-suggestions li { padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 15px; transition: padding-left .3s ease, background-color .3s ease; }
.error-page .error-suggestions li:hover { padding-left: 10px; background: var(--wash); }
.error-page .error-suggestions a, .error-page .error-note a { color: var(--blue-dark); font-weight: 600; text-decoration: underline; text-decoration-color: var(--orange); text-underline-offset: 4px; }
.error-page .error-note { margin: 28px 0 0; padding: 20px; background: var(--wash); border-left: 4px solid var(--blue); font-size: 14px; }
.error-page-500 .error-display strong { color: var(--orange); }
.error-page-500 .error-display { box-shadow: 14px 14px 0 var(--orange); }
.error-page-500 .error-display::before { border-color: var(--blue); }

/* --------------------------------------------------------------------------
   28 · KEYFRAMES
   -------------------------------------------------------------------------- */
@keyframes rise { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--on-accent) 40%, transparent); } 50% { box-shadow: 0 0 0 6px transparent; } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes frame-shift { from { transform: rotate(-4deg) translate(0, 0); } to { transform: rotate(-1deg) translate(10px, 7px); } }
@keyframes art-breathe { from { transform: translateY(0) scale(1); } to { transform: translateY(-12px) scale(1.03); } }
@keyframes orbit-drift { from { transform: rotate(-24deg) scaleY(.36) translateX(0); } to { transform: rotate(-12deg) scaleY(.36) translateX(22px); } }
@keyframes register-float { from { transform: rotate(-2deg) translate(0, 0); } to { transform: rotate(-1deg) translate(8px, 5px); } }
@keyframes register-pulse { 0%, 100% { opacity: .55; transform: rotate(3deg) scale(1); } 50% { opacity: 1; transform: rotate(2deg) scale(1.012); } }
@keyframes availability-pulse { 0%, 100% { transform: rotate(11deg) scale(1); } 50% { transform: rotate(11deg) scale(1.045); } }
@keyframes vt-out { to { opacity: 0; transform: translateX(-3vw); } }
@keyframes vt-in { from { opacity: 0; transform: translateX(3vw); } }

/* --------------------------------------------------------------------------
   29 · REDUCED MOTION · RESPONSIVE · PRINT
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal, html.js.is-ready .hero-intro > *, html.js.is-ready .page-hero .container > * { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
  body main, body .site-footer { transition: none; }
}

@media (max-width: 1180px) {
  .feature-grid, .card-grid { grid-template-columns: repeat(2, 1fr); }
  .skill-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 940px) and (min-width: 641px) {
  .brand-label { display: none; }
}

@media (max-width: 900px) {
  .chapter-nav { display: none; }
}

@media (max-width: 820px) {
  .container { width: min(var(--max), calc(100% - 48px)); }
  .hero-spread { grid-template-columns: 1fr; gap: 48px; }
  .hero-editorial { display: block; }
  .hero-frame { width: min(100%, 620px); min-height: 520px; margin: 0 auto; }
  .nav-status { display: none; }
  .intro-grid, .split { grid-template-columns: 1fr; gap: 34px; }
  .section-heading { grid-template-columns: 1fr; gap: 8px; margin-bottom: 34px; }
  .section-heading > .section-label { padding-top: 0; }
  .card-grid, .card-grid.two { grid-template-columns: repeat(2, 1fr); }
  .card-grid.two .card:nth-child(2n) { transform: none; }
  .card-grid.two .card:nth-child(2n):hover { transform: translate(-4px, -4px); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(n + 3) { border-top: 1px solid var(--ink); }
  .case-study { grid-template-columns: 1fr; gap: 14px; }
  .contact-panel { grid-template-columns: 1fr; gap: 28px; padding: 30px 24px; box-shadow: 8px 8px 0 var(--blue); }
  .contact-panel::after { display: none; }
  .error-hero-grid { grid-template-columns: 1fr; gap: 54px; }
  .error-display { max-width: 560px; width: 100%; margin: 0 auto; }
  .section::before { left: 14px; }
  .section > .container::before { left: -7px; }
  .page-hero .container::after { position: static; display: block; margin-top: 26px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  :root { --header: 68px; }
  .container { width: min(var(--max), calc(100% - 32px)); }
  .site-header { height: auto; }
  .header-inner { position: relative; padding: 12px 0; flex-wrap: wrap; }
  .brand { flex: 1 1 auto; }
  .site-nav {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 18px 16px 22px;
    background: var(--white);
    border: 1px solid var(--ink);
    box-shadow: var(--shadow);
    z-index: 30;
  }
  .site-nav.is-open { display: flex; animation: menu-in .2s ease both; }
  .site-nav a { text-align: center; padding: 12px 9px; }
  .site-nav .nav-cta { margin: 8px 0 0; }
  .nav-meta { display: none; }
  .theme-toggle { margin-left: auto; }
  .nav-toggle { display: block; }
  .hero { padding: 62px 0 82px; }
  .hero-intro .kicker { margin-bottom: 36px; }
  .hero-intro h1 { font-size: clamp(4.3rem, 21vw, 7rem); }
  .hero-copy { margin-top: 38px; }
  .hero-frame { min-height: 420px; }
  .frame-paper { padding: 18px; }
  .frame-art { inset: 70px 20px 46px; }
  .art-letter { font-size: 18rem; }
  .frame-note { left: -4px; bottom: -12px; }
  .frame-stamp { right: -3px; top: 30px; width: 68px; height: 68px; font-size: 8px; }
  .hero-frame::before { inset: -8px 3px 8px -8px; }
  .hero-frame::after { inset: 8px -3px 36px 8px; }
  .frame-paper::after { background-size: 78px 78px; }
  .page-hero { padding: 66px 0 52px; }
  .page-hero::before { width: 28%; }
  .section { padding: 82px 0; }
  .section-heading::after { width: 30px; }
  .section::before, .section > .container::before { display: none; }
  .intro-grid .lead { padding-right: 0; }
  .feature-grid, .card-grid, .card-grid.two { grid-template-columns: 1fr; }
  .skill-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--ink); }
  .stat:last-child { border-bottom: 0; }
  .stats-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .rule-list li { grid-template-columns: 1fr; gap: 5px; }
  .timeline-item { padding-left: 28px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-field.full { grid-column: auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-inner { flex-direction: column; gap: 8px; }
  .site-footer::before { right: 16px; }
  .site-footer::after { left: 58%; }
  .back-top { right: 16px; bottom: 16px; }
  .marquee-group span { padding: 0 18px; font-size: 10px; }
}

@media print {
  .site-header, .back-top, .actions, .marquee, .theme-toggle, .chapter-nav, .cursor-dot, .scroll-marker { display: none !important; }
  body::before, body::after { display: none; }
  body, .site-footer { background: #fff; color: #111; }
  .feature-card, .card, .frame-paper, .skill-group, .error-display { box-shadow: none; break-inside: avoid; }
  .reveal { opacity: 1; transform: none; }
  .section, .case-study { border-color: #ddd; }
}

@keyframes menu-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

.skip-to-main { position: absolute; left: 16px; top: -60px; z-index: 50; padding: 10px 14px; color: var(--on-ink); background: var(--ink); border: 1px solid var(--ink); }
.skip-to-main:focus { top: 16px; }

@keyframes filter-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

@media (max-width: 640px) {
  .project-index { padding: 48px 0 26px; }
  .project-index::before { right: 16px; top: 16px; }
  .project-index-top { grid-template-columns: 1fr; gap: 18px; }
  .project-index h2 { font-size: clamp(2rem, 10vw, 3rem); }
  .project-index-top > p { font-size: .9rem; }
  .project-filters { gap: 6px; margin-top: 26px; }
  .project-filter { flex: 1 1 auto; justify-content: center; padding: 10px 8px; font-size: 10px; }
}

/* --------------------------------------------------------------------------
   30 · DARK ART DIRECTION POLISH
   -------------------------------------------------------------------------- */
:root[data-theme='dark'] body {
  background-image:
    radial-gradient(circle at 78% 8%, rgba(139, 215, 179, .075), transparent 27rem),
    radial-gradient(circle at 8% 44%, rgba(255, 154, 118, .035), transparent 24rem);
}
:root[data-theme='dark'] .site-header {
  border-bottom-color: color-mix(in srgb, var(--blue) 32%, var(--line));
  box-shadow: 0 1px 0 rgba(255,255,255,.025);
}
:root[data-theme='dark'] .site-header.is-scrolled {
  box-shadow: 0 16px 40px rgba(0,0,0,.28), 0 1px 0 rgba(139,215,179,.12);
}
:root[data-theme='dark'] .site-nav .nav-cta {
  color: var(--on-accent);
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 4px 4px 0 rgba(0,0,0,.35);
}
:root[data-theme='dark'] .site-nav .nav-cta:hover {
  color: var(--on-accent);
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 2px 2px 0 rgba(0,0,0,.35);
}
:root[data-theme='dark'] .frame-note {
  color: var(--navy);
  background: var(--blue);
}
:root[data-theme='dark'] .back-top,
:root[data-theme='dark'] .skip-to-main {
  color: var(--on-accent);
  background: var(--blue);
  border-color: var(--blue);
}
:root[data-theme='dark'] .button-primary:hover {
  color: var(--on-accent);
  background: var(--ink);
  border-color: var(--ink);
}
:root[data-theme='dark'] .brand:hover .brand-mark {
  color: var(--on-accent);
  background: var(--blue);
}
:root[data-theme='dark'] .hero,
:root[data-theme='dark'] .page-hero {
  background:
    linear-gradient(135deg, rgba(139,215,179,.035), transparent 42%),
    var(--paper);
}
:root[data-theme='dark'] .frame-paper,
:root[data-theme='dark'] .feature-card,
:root[data-theme='dark'] .card,
:root[data-theme='dark'] .skill-group,
:root[data-theme='dark'] .stats-grid,
:root[data-theme='dark'] .architecture,
:root[data-theme='dark'] .error-display,
:root[data-theme='dark'] .site-nav,
:root[data-theme='dark'] .form-field input,
:root[data-theme='dark'] .form-field textarea {
  background-image: linear-gradient(145deg, rgba(255,255,255,.035), transparent 45%);
}
:root[data-theme='dark'] .feature-card:hover,
:root[data-theme='dark'] .card:hover,
:root[data-theme='dark'] .skill-group:hover {
  box-shadow: 0 18px 38px rgba(0,0,0,.24), 0 0 0 1px color-mix(in srgb, var(--blue) 24%, transparent);
}
:root[data-theme='dark'] .marquee,
:root[data-theme='dark'] .stats-band {
  background: color-mix(in srgb, var(--paper) 88%, var(--blue));
}
:root[data-theme='dark'] .tag {
  color: var(--ink-soft);
  background: rgba(139,215,179,.045);
  border-color: color-mix(in srgb, var(--line) 82%, var(--blue));
}
:root[data-theme='dark'] .tag:hover {
  color: var(--ink);
  border-color: var(--blue);
  background: rgba(139,215,179,.10);
}
:root[data-theme='dark'] .code {
  background: #060B11;
  box-shadow: inset 0 0 0 1px rgba(139,215,179,.05);
}
:root[data-theme='dark'] .contact-panel {
  background: linear-gradient(135deg, #18252D, #0B1118 72%);
  box-shadow: 12px 12px 0 color-mix(in srgb, var(--blue) 78%, var(--navy));
}
:root[data-theme='dark'] .nav-status {
  box-shadow: 4px 4px 0 rgba(0,0,0,.45);
}
:root[data-theme='dark'] ::selection {
  color: #06110C;
  background: var(--blue);
}

@media (max-width: 640px) {
  .hero-intro h1 { letter-spacing: -.07em; }
  .section-heading p { max-width: none; }
  .contact-panel { margin-right: 8px; }
  .actions .button { flex: 1 1 190px; }
}

/* --------------------------------------------------------------------------
   31 · PREMIUM MOTION & HOVER POLISH
   -------------------------------------------------------------------------- */
:root {
  --ease-smooth: cubic-bezier(.16, 1, .3, 1);
  --ease-spring: cubic-bezier(.2, .8, .2, 1.2);
  --surface-glow: rgba(47, 111, 94, .14);
}

body {
  background-image:
    radial-gradient(circle at 88% 4%, color-mix(in srgb, var(--blue) 10%, transparent), transparent 26rem),
    radial-gradient(circle at 4% 58%, color-mix(in srgb, var(--orange) 5%, transparent), transparent 22rem);
}

::view-transition-old(root), ::view-transition-new(root) { mix-blend-mode: normal; }
.site-header { transition: height .35s var(--ease-smooth), box-shadow .35s ease, background .35s ease; }
.site-header.is-scrolled { box-shadow: 0 18px 44px color-mix(in srgb, var(--ink) 15%, transparent); }
.site-nav a, .button, .theme-toggle, .project-filter, .back-top { transition-timing-function: var(--ease-smooth); }

.site-nav a:not(.nav-cta) { border-radius: 999px; }
.site-nav a:not(.nav-cta)::after { bottom: 3px; left: 14px; right: 14px; border-radius: 99px; }
.site-nav a:hover, .site-nav a[aria-current='page'] { background: color-mix(in srgb, var(--blue) 12%, transparent); }
.site-nav .nav-cta { border-radius: 999px; box-shadow: 4px 4px 0 color-mix(in srgb, var(--ink) 18%, transparent); }
.site-nav .nav-cta:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 color-mix(in srgb, var(--ink) 18%, transparent); }

.hero, .page-hero { isolation: isolate; }
.hero::after, .page-hero::after {
  content: '';
  position: absolute;
  width: 28rem;
  height: 28rem;
  right: -12rem;
  top: -14rem;
  z-index: -1;
  border: 1px solid color-mix(in srgb, var(--blue) 22%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 2rem color-mix(in srgb, var(--blue) 4%, transparent), 0 0 0 5rem color-mix(in srgb, var(--blue) 2%, transparent);
  animation: slow-orbit 18s linear infinite;
  pointer-events: none;
}
.page-hero::after { width: 20rem; height: 20rem; right: 7%; top: 12%; opacity: .55; }

.button { position: relative; overflow: hidden; border-radius: 999px; }
.button.magnetic, .site-nav .nav-cta.magnetic { will-change: transform; }
.button.magnetic:hover {
  border-radius: 16px 999px 999px 16px;
  transform: translate3d(calc(var(--mag-x, 0px) - 2px), calc(var(--mag-y, 0px) - 2px), 0);
}
.site-nav .nav-cta.magnetic:hover {
  transform: translate3d(calc(var(--mag-x, 0px) - 2px), calc(var(--mag-y, 0px) - 2px), 0);
}
.button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 25%, rgba(255,255,255,.28) 48%, transparent 70%);
  transform: translateX(-130%);
  transition: transform .7s var(--ease-smooth);
}
.button:hover::before { transform: translateX(130%); }
.button > * { position: relative; }

.feature-card, .card, .skill-group, .stats-grid, .frame-paper, .error-display {
  box-shadow: 0 1px 0 color-mix(in srgb, var(--on-ink) 12%, transparent), var(--shadow-soft);
}
.feature-card, .card, .skill-group { transform: translateZ(0); }
.feature-card::after, .card::after, .skill-group::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(320px circle at var(--pointer-x, 50%) var(--pointer-y, 0%), var(--surface-glow), transparent 68%);
  transition: opacity .35s ease;
}
.feature-card:hover::after, .card:hover::after, .skill-group:hover::after { opacity: 1; }
.feature-card:hover, .card:hover { transform: translate(-5px, -6px) rotate(-.25deg); box-shadow: 0 20px 40px color-mix(in srgb, var(--ink) 17%, transparent), var(--shadow-soft); }
.card-grid.two .card:nth-child(2n):hover { transform: translate(-5px, 18px) rotate(.25deg); }
.card-grid.two .card:nth-child(2n) { transform: translateY(24px); }
.tag { transition: color .25s ease, border-color .25s ease, background .25s ease, transform .25s var(--ease-spring); }
.tag:hover { color: var(--ink); border-color: var(--blue); background: color-mix(in srgb, var(--blue) 12%, var(--paper)); transform: translateY(-2px); }

.frame-paper { transition: box-shadow .5s var(--ease-smooth), transform .5s var(--ease-smooth); }
.hero-frame:hover .frame-paper { box-shadow: 18px 20px 0 color-mix(in srgb, var(--ink) 18%, transparent); }
.frame-stamp:hover { animation-play-state: paused; transform: rotate(5deg) scale(1.08); }

.timeline-item::before { transition: transform .35s var(--ease-spring), background .25s ease; }
.timeline-item:hover::before { transform: scale(1.35); background: var(--blue); }
.rule-list li:hover { padding-left: 16px; box-shadow: inset 4px 0 0 var(--blue); }
details summary { transition: padding-left .3s var(--ease-smooth), color .25s ease; }
details summary:hover { padding-left: 10px; color: var(--blue-dark); }
.form-field input, .form-field textarea { transition: border-color .25s ease, box-shadow .25s ease, background .25s ease; }
.form-field input:hover, .form-field textarea:hover { border-color: var(--blue); }
.form-field input:focus, .form-field textarea:focus { border-color: var(--blue); box-shadow: 0 8px 22px color-mix(in srgb, var(--blue) 12%, transparent); outline: none; }

.page-transition-curtain {
  position: fixed;
  inset: 0;
  z-index: 10002;
  display: grid;
  place-items: center;
  color: var(--on-ink);
  background: var(--ink);
  pointer-events: none;
  transform: translateX(100%);
  transition: transform .72s var(--ease-smooth);
}
.page-transition-curtain::before { content: 'LOADING / NEXT PAGE'; color: var(--orange); font: 11px var(--mono); letter-spacing: .16em; }
.page-transition-curtain.is-active { transform: translateX(0); }

@keyframes slow-orbit { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  .hero::after, .page-hero::after { animation: none; }
  .page-transition-curtain { transition: none; }
  .button::before { display: none; }
  .site-nav::before { transition: none; }
}

@media (max-width: 820px) {
  .site-nav::before { display: none; }
  .site-nav .nav-cta { box-shadow: none; }
  .feature-card:hover, .card:hover { transform: translate(-3px, -3px); }
  .card-grid.two .card:nth-child(2n):hover { transform: translate(-3px, -3px); }
}