/* ============================================================
   刘俊 · 简历  —  Design System
   极致中性黑白灰 + 单一电光绿信号色
   ============================================================ */

:root {
  /* neutrals (zero chroma) */
  --bg:        #0a0a0b;
  --bg-2:      #101012;
  --surface:   #141416;
  --surface-2: #1a1a1d;
  --line:      rgba(255,255,255,0.10);
  --line-2:    rgba(255,255,255,0.06);
  --text:      #f4f4f3;
  --text-2:    #b7b7b5;
  --text-3:    #6e6e6c;

  /* single signal accent — electric lime */
  --accent:    oklch(0.90 0.20 128);   /* ≈ #c7f53d */
  --accent-dim:oklch(0.90 0.20 128 / 0.14);
  --accent-line:oklch(0.90 0.20 128 / 0.4);

  --font-display: 'Space Grotesk', 'Noto Sans SC', system-ui, sans-serif;
  --font-sans:    'Noto Sans SC', 'Space Grotesk', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 64px);

  --shadow-a: rgba(0,0,0,.4);
  --shadow-b: rgba(0,0,0,.5);
  --shadow-c: rgba(0,0,0,.6);
  --shadow-d: rgba(0,0,0,.65);
  --texture-dot: rgba(255,255,255,0.035);
  --hairline-tint: rgba(255,255,255,0.015);

  /* fixed dark code-terminal palette — code blocks stay dark in both themes */
  --code-bg: #0c0c0e;
  --code-line: rgba(255,255,255,0.10);
  --code-text: #d7d7da;
  --code-text-dim: #74748a;
  --code-accent: oklch(0.90 0.20 128);
  --code-keyword: #8ab4ff;
}

/* ============================================================
   LIGHT THEME — same neutral/lime system, inverted surfaces
   ============================================================ */
[data-theme="light"] {
  --bg:        #fbfbfa;
  --bg-2:      #f3f3f1;
  --surface:   #ffffff;
  --surface-2: #eeeeec;
  --line:      rgba(10,10,11,0.12);
  --line-2:    rgba(10,10,11,0.07);
  --text:      #101012;
  --text-2:    #4d4d4a;
  --text-3:    #8c8c88;

  --accent:    oklch(0.58 0.17 135);
  --accent-dim:oklch(0.58 0.17 135 / 0.12);
  --accent-line:oklch(0.58 0.17 135 / 0.38);

  --shadow-a: rgba(20,20,15,.10);
  --shadow-b: rgba(20,20,15,.14);
  --shadow-c: rgba(20,20,15,.16);
  --shadow-d: rgba(20,20,15,.18);
  --texture-dot: rgba(10,10,11,0.05);
  --hairline-tint: rgba(10,10,11,0.02);

  /* code panel adapts too — light, legible editor palette */
  --code-bg: #f3f3f0;
  --code-line: rgba(10,10,11,0.10);
  --code-text: #17171a;
  --code-text-dim: #5c5c58;
  --code-accent: oklch(0.50 0.16 135);
  --code-keyword: #1f5fbf;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background .35s ease, color .35s ease;
}

/* faint dotted grid texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(var(--texture-dot) 1px, transparent 1px);
  background-size: 38px 38px;
  pointer-events: none;
  z-index: 0;
}

::selection { background: var(--accent); color: #0a0a0b; }

/* ---------- ambient aurora ---------- */
.aurora { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; filter: blur(70px) saturate(1.15); opacity: .5; }
.aurora i {
  position: absolute; display: block; border-radius: 50%;
  mix-blend-mode: screen;
}
.aurora i:nth-child(1) { width: 52vw; height: 52vw; left: -14vw; top: -18vw; background: radial-gradient(circle, oklch(0.55 0.14 128 / .55), transparent 65%); animation: drift1 26s ease-in-out infinite alternate; }
.aurora i:nth-child(2) { width: 44vw; height: 44vw; right: -16vw; top: 12vh; background: radial-gradient(circle, oklch(0.45 0.10 230 / .5), transparent 65%); animation: drift2 32s ease-in-out infinite alternate; }
.aurora i:nth-child(3) { width: 40vw; height: 40vw; left: 28vw; bottom: -22vw; background: radial-gradient(circle, oklch(0.42 0.12 165 / .45), transparent 65%); animation: drift3 38s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(9vw, 7vh) scale(1.15); } }
@keyframes drift2 { to { transform: translate(-8vw, 14vh) scale(0.92); } }
@keyframes drift3 { to { transform: translate(-10vw, -8vh) scale(1.18); } }
@media (prefers-reduced-motion: reduce) { .aurora i { animation: none; } }
[data-theme="light"] .aurora { opacity: .22; filter: blur(70px) saturate(1.05); mix-blend-mode: normal; }
[data-theme="light"] .aurora i { mix-blend-mode: multiply; }

/* ---------- scroll progress ---------- */
.progress { position: fixed; top: 0; left: 0; height: 2px; width: 0; z-index: 60; background: linear-gradient(90deg, var(--accent), oklch(0.85 0.16 165)); box-shadow: 0 0 12px var(--accent-line); }

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

/* ---------- shared layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); position: relative; z-index: 1; }

.section { padding-block: clamp(72px, 11vw, 160px); position: relative; z-index: 1; }
.section + .section { border-top: 1px solid var(--line-2); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}
.eyebrow .num { color: var(--accent); }
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--accent);
  display: inline-block;
}

.s-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}
.s-sub { color: var(--text-2); font-size: clamp(15px, 1.4vw, 18px); max-width: 60ch; }

/* reveal animation */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.2,.6,.2,1), transform .7s cubic-bezier(.2,.6,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1 !important; transform: none !important; } }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px var(--pad);
  backdrop-filter: blur(14px);
  background: rgba(10,10,11,0.6);
  border-bottom: 1px solid var(--line-2);
}
.brand {
  font-family: var(--font-mono);
  font-size: 14px; letter-spacing: 0.04em;
  display: flex; align-items: center; gap: 9px;
}
.brand b { font-weight: 700; }
.brand .tag { color: var(--accent); }
.nav-links { display: flex; gap: 26px; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-3); transition: color .2s;
}
.nav-links a:hover { color: var(--text); }
@media (max-width: 880px){ .nav-links { display: none; } }

.lang-toggle {
  display: inline-flex; border: 1px solid var(--line); border-radius: 100px; overflow: hidden;
  font-family: var(--font-mono); font-size: 12px;
}
.lang-toggle button {
  background: none; border: none; color: var(--text-3); cursor: pointer;
  padding: 6px 13px; letter-spacing: 0.08em; transition: all .2s;
}
.lang-toggle button.active { background: var(--accent); color: #0a0a0b; font-weight: 700; }

.nav-right { display: flex; align-items: center; gap: 10px; }
.theme-toggle {
  display: inline-flex; border: 1px solid var(--line); border-radius: 100px; overflow: hidden;
}
.theme-toggle button {
  background: none; border: none; color: var(--text-3); cursor: pointer;
  padding: 6px 12px; font-size: 14px; line-height: 1; transition: all .2s;
}
.theme-toggle button.active { background: var(--accent); color: #0a0a0b; }

/* ============================================================
   HERO
   ============================================================ */
.hero { min-height: 100svh; display: flex; flex-direction: column; justify-content: center; padding-top: 90px; }
.status {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-2);
  border: 1px solid var(--line); border-radius: 100px; padding: 7px 15px;
  margin-bottom: 38px; width: fit-content;
}
.status .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-line);
  animation: pulse 2.4s infinite;
}
@keyframes pulse { 0%{box-shadow:0 0 0 0 var(--accent-line);} 70%{box-shadow:0 0 0 10px transparent;} 100%{box-shadow:0 0 0 0 transparent;} }

.hero-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(86px, 21vw, 320px);
  line-height: 0.84;
  letter-spacing: -0.04em;
  margin-bottom: 26px;
  position: relative;
}
.hero-name .en { letter-spacing: -0.05em; }
/* shine sweep across the giant name */
.hero-name span {
  background: linear-gradient(110deg, var(--text) 0%, var(--text) 38%, var(--accent) 50%, var(--text) 66%, var(--text) 100%);
  background-size: 250% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: shine 7s cubic-bezier(.6,.05,.3,1) infinite;
}
@keyframes shine { 0%, 55% { background-position: 115% 0; } 90%, 100% { background-position: -35% 0; } }
@media (prefers-reduced-motion: reduce) { .hero-name span { animation: none; background-position: 50% 0; } }
.hero-role {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(20px, 3.4vw, 40px);
  letter-spacing: -0.01em;
  margin-bottom: 30px;
}
.hero-role .x { color: var(--accent); font-weight: 700; padding: 0 .12em; }
.hero-lead {
  color: var(--text-2);
  font-size: clamp(15px, 1.5vw, 19px);
  max-width: 62ch;
  line-height: 1.75;
}

/* stat strip */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); margin-top: 56px;
}
.stat { padding: 26px 22px 26px 0; border-right: 1px solid var(--line-2); }
.stat:last-child { border-right: none; }
.stat .v {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(38px, 5vw, 64px); line-height: 1; letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.stat .v em { color: var(--accent); font-style: normal; text-shadow: 0 0 28px var(--accent-line); }
.stat .k { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3); margin-top: 10px; }
@media (max-width: 720px){ .stats { grid-template-columns: repeat(2,1fr); } .stat:nth-child(2n){border-right:none;} }

/* ---------- keyword marquee ---------- */
.marquee { border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); overflow: hidden; background: var(--hairline-tint); position: relative; z-index: 1; }
.mq-track {
  display: flex; align-items: center; gap: 34px; width: max-content;
  padding: 16px 0; font-family: var(--font-display); font-weight: 600;
  font-size: 15px; letter-spacing: 0.14em; color: var(--text-3);
  animation: mq 30s linear infinite;
}
.mq-track span { white-space: nowrap; }
.mq-track span:nth-child(4n+1) { color: var(--accent); }
.mq-track i { font-style: normal; font-size: 8px; color: var(--text-3); }
@keyframes mq { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .mq-track { animation: none; } }

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(28px, 5vw, 80px); }
@media (max-width: 860px){ .about-grid { grid-template-columns: 1fr; } }

.info-card { border: 1px solid var(--line); background: var(--surface); padding: 30px; }
.info-card h4 { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); margin-bottom: 22px; }
.info-row { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px solid var(--line-2); font-size: 15px; }
.info-row:last-child { border-bottom: none; }
.info-row .label { color: var(--text-3); }
.info-row .val { color: var(--text); font-weight: 500; }

.certs { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.cert {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.05em;
  border: 1px solid var(--line); padding: 8px 13px; color: var(--text-2);
  display: inline-flex; align-items: center; gap: 7px;
}
.cert b { color: var(--accent); font-weight: 700; }

.bio p { color: var(--text-2); font-size: clamp(15px,1.5vw,18px); line-height: 1.85; margin-bottom: 22px; }
.bio p strong { color: var(--text); font-weight: 600; }
.bio .lead { color: var(--text); font-size: clamp(18px,2vw,24px); font-weight: 500; line-height: 1.6; margin-bottom: 30px; font-family: var(--font-display); }

/* ============================================================
   SUPER-INDIVIDUAL  (manifesto / thesis)
   ============================================================ */
.super { background: var(--bg-2); position: relative; overflow: hidden; }
.super::after {
  content: "∞";
  position: absolute; right: -4vw; bottom: -8vw;
  font-family: var(--font-display); font-weight: 700;
  font-size: 44vw; line-height: 1; color: var(--surface-2);
  opacity: 0.5; pointer-events: none; z-index: 0;
}
.super .wrap { position: relative; z-index: 1; }
.super .eyebrow .pill {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em;
  color: #0a0a0b; background: var(--accent); padding: 3px 10px; border-radius: 3px; font-weight: 700;
}

/* the equation */
.equation {
  display: flex; align-items: center; flex-wrap: wrap; gap: clamp(12px, 2.4vw, 30px);
  margin: 8px 0 14px;
}
.eq-term {
  font-family: var(--font-display); font-weight: 700; line-height: 0.98; letter-spacing: -0.02em;
  font-size: clamp(30px, 5.4vw, 68px);
}
.eq-term small { display: block; font-family: var(--font-mono); font-weight: 400; font-size: 12px; letter-spacing: 0.12em; color: var(--text-3); margin-top: 12px; text-transform: uppercase; }
.eq-op { font-family: var(--font-display); font-weight: 400; font-size: clamp(26px, 4vw, 52px); color: var(--accent); }
.eq-term.result { color: var(--accent); }
.eq-term.result em { font-style: normal; -webkit-text-stroke: 1.5px var(--accent); color: transparent; }

.super-lead { font-family: var(--font-display); font-weight: 500; font-size: clamp(18px, 2.2vw, 27px); line-height: 1.5; max-width: 30ch; color: var(--text); margin: 40px 0 0; }
.super-lead .hl { color: var(--accent); }

/* ---------- solo-flow: one person + AI wired through the full pipeline ---------- */
.solo-flow {
  margin-top: 48px; border: 1px solid var(--line); background: var(--surface);
  padding: clamp(28px,4vw,44px); position: relative; overflow: hidden;
}
.solo-merge { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.merge-roles { display: flex; gap: 10px; flex-wrap: wrap; }
.role-node {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; color: var(--text-3);
  border: 1px solid var(--line); padding: 8px 14px; background: var(--bg);
  animation: mergeFlow 3.2s ease-in-out infinite;
  animation-delay: calc(var(--i) * 0.22s);
}
@keyframes mergeFlow {
  0%   { transform: translateX(0); opacity: .85; }
  55%  { transform: translateX(14px); opacity: .25; }
  56%  { transform: translateX(-14px); opacity: 0; }
  70%  { transform: translateX(0); opacity: .85; }
  100% { transform: translateX(0); opacity: .85; }
}
.merge-arrow { font-family: var(--font-display); font-size: 22px; color: var(--text-3); }
.you-node {
  font-family: var(--font-mono); font-weight: 700; font-size: 14px; letter-spacing: 0.04em;
  color: #0a0a0b; background: var(--accent); padding: 11px 20px;
  box-shadow: 0 0 0 0 var(--accent-line); animation: youPulse 2.4s infinite;
}
@keyframes youPulse { 0%{ box-shadow: 0 0 0 0 var(--accent-line); } 70%{ box-shadow: 0 0 0 14px transparent; } 100%{ box-shadow: 0 0 0 0 transparent; } }
.solo-caption { margin-top: 18px; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; color: var(--text-3); }
.solo-pipeline { margin-top: 30px; }
@media (prefers-reduced-motion: reduce) { .role-node { animation: none; } .you-node { animation: none; } }
@media (max-width: 620px) { .solo-merge { gap: 14px; } .merge-arrow { display: none; } }

/* three pillars */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-2); border: 1px solid var(--line-2); margin-top: 56px; }
@media (max-width: 820px){ .pillars { grid-template-columns: 1fr; } }
.pillar { background: var(--bg-2); padding: 34px 30px; position: relative; }
.pillar .pix { font-family: var(--font-mono); font-size: 12px; color: var(--accent); letter-spacing: 0.1em; }
.pillar h3 { font-family: var(--font-display); font-weight: 600; font-size: 22px; margin: 14px 0 6px; letter-spacing: -0.01em; }
.pillar .role { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); margin-bottom: 16px; }
.pillar p { color: var(--text-2); font-size: 14.5px; line-height: 1.75; }
.pillar p + p { margin-top: 12px; }
.pillar p strong { color: var(--text); font-weight: 600; }

/* proof row */
.proof { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 48px; }
@media (max-width: 700px){ .proof { grid-template-columns: 1fr; } }
.proof .pr { border-left: 2px solid var(--accent); padding-left: 18px; }
.proof .pr .h { font-family: var(--font-display); font-weight: 600; font-size: 17px; margin-bottom: 7px; }
.proof .pr p { color: var(--text-2); font-size: 13.5px; line-height: 1.65; }

/* ============================================================
   AI CAPABILITIES
   ============================================================ */
.cap-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--line-2); border: 1px solid var(--line-2); }
@media (max-width: 920px){ .cap-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px){ .cap-grid { grid-template-columns: 1fr; } }
.cap {
  background: var(--bg); padding: 32px 28px; transition: background .3s, box-shadow .3s;
  position: relative; cursor: pointer;
}
.cap:hover, .cap:focus-visible { background: var(--surface); box-shadow: inset 0 0 0 1px var(--accent-line), 0 14px 44px var(--shadow-a); outline: none; }
.cap:hover h3, .cap:focus-visible h3 { color: var(--accent); }
.cap h3 { transition: color .25s; }
.cap .ix { font-family: var(--font-mono); font-size: 12px; color: var(--accent); letter-spacing: 0.1em; }
.cap h3 { font-family: var(--font-display); font-weight: 600; font-size: 21px; margin: 16px 0 12px; letter-spacing: -0.01em; }
.cap p { color: var(--text-2); font-size: 14.5px; line-height: 1.75; }
.cap .chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.chip { font-family: var(--font-mono); font-size: 11px; color: var(--text-3); border: 1px solid var(--line); padding: 4px 9px; letter-spacing: 0.03em; }
.cap:hover .chip { border-color: var(--line); color: var(--text-2); }

.cap-cta {
  margin-top: 20px; display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.06em; color: var(--text-3);
  transition: color .25s, gap .25s;
}
.cap:hover .cap-cta, .cap:focus-visible .cap-cta { color: var(--accent); gap: 12px; }
.cap-cta .arrow { transition: transform .25s; }
.cap:hover .cap-cta .arrow, .cap:focus-visible .cap-cta .arrow { transform: translateX(3px); }

/* ---------- capability detail overlay ---------- */
.cap-overlay {
  position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center;
  padding: 24px; opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s;
}
.cap-overlay.open { opacity: 1; visibility: visible; }
.cap-overlay-bg { position: absolute; inset: 0; background: rgba(6,6,7,0.82); backdrop-filter: blur(10px); }
.cap-modal {
  position: relative; width: min(760px, 100%); max-height: 88vh; overflow-y: auto;
  background: var(--surface); border: 1px solid var(--accent-line);
  box-shadow: 0 40px 120px var(--shadow-c), 0 0 60px var(--accent-line);
  padding: 40px clamp(22px,4vw,48px) 44px;
  transform: translateY(24px) scale(.97); transition: transform .35s cubic-bezier(.2,.7,.2,1);
}
.cap-overlay.open .cap-modal { transform: none; }
.cap-modal::-webkit-scrollbar { width: 9px; }
.cap-modal::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 8px; }
.cap-close {
  position: absolute; top: 20px; right: 20px; width: 34px; height: 34px;
  border: 1px solid var(--line); background: var(--surface-2); color: var(--text-2);
  font-size: 15px; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.cap-close:hover { border-color: var(--accent); color: var(--accent); }
.cap-modal-head { display: flex; align-items: flex-start; gap: 20px; margin-bottom: 8px; }
.cap-modal-ix {
  font-family: var(--font-mono); font-weight: 700; font-size: 15px; color: #0a0a0b;
  background: var(--accent); width: 42px; height: 42px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.cap-modal-head h3 { font-family: var(--font-display); font-weight: 700; font-size: clamp(22px,3vw,30px); letter-spacing: -0.01em; margin-bottom: 8px; }
.cap-modal-tag { color: var(--text-2); font-size: 14.5px; line-height: 1.6; max-width: 56ch; }

/* pipeline */
.cap-pipeline {
  display: flex; align-items: stretch; gap: 0; margin: 36px 0 8px; overflow-x: auto; padding-bottom: 6px;
}
.cp-step { flex: 1; min-width: 108px; display: flex; flex-direction: column; align-items: center; text-align: center; position: relative; padding: 0 6px; }
.cp-node {
  width: 46px; height: 46px; border-radius: 50%; border: 1.5px solid var(--line);
  background: var(--bg); display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 15px; color: var(--text-3); position: relative; z-index: 2;
  transition: border-color .4s, color .4s, box-shadow .4s, background .4s;
}
.cp-step.on .cp-node { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); box-shadow: 0 0 18px var(--accent-line); }
.cp-line { position: absolute; top: 23px; left: -50%; width: 100%; height: 2px; background: var(--line); z-index: 1; }
.cp-step:first-child .cp-line { display: none; }
.cp-line-fill { position: absolute; inset: 0; background: var(--accent); width: 0%; transition: width .5s ease; }
.cp-label { margin-top: 12px; font-size: 12px; color: var(--text-2); line-height: 1.4; transition: color .4s; }
.cp-step.on .cp-label { color: var(--text); font-weight: 600; }
@media (max-width: 620px) { .cp-step { min-width: 84px; } .cp-label { font-size: 11px; } }

/* meters (circular gauges) */
.cap-meters { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 20px; margin: 32px 0 6px; }
.cm-item { display: flex; align-items: center; gap: 14px; }
.cm-ring { position: relative; width: 58px; height: 58px; flex-shrink: 0; }
.cm-ring svg { transform: rotate(-90deg); }
.cm-ring circle.track { stroke: var(--line); fill: none; stroke-width: 5; }
.cm-ring circle.fill { stroke: var(--accent); fill: none; stroke-width: 5; stroke-linecap: round; stroke-dasharray: 151; stroke-dashoffset: 151; transition: stroke-dashoffset 1.1s cubic-bezier(.2,.7,.2,1); }
.cm-ring .cm-pct { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 12px; color: var(--accent); font-weight: 700; }
.cm-name { font-size: 13px; color: var(--text-2); line-height: 1.4; max-width: 14ch; }

.cap-proof { margin-top: 30px; font-size: 14px; line-height: 1.75; color: var(--text-2); border-left: 2px solid var(--accent-line); padding-left: 16px; }
.cap-proof strong { color: var(--text); font-weight: 600; }
.cap-modal-cta {
  display: inline-flex; align-items: center; gap: 9px; margin-top: 26px;
  font-family: var(--font-mono); font-size: 12.5px; color: var(--accent); border: 1px solid var(--accent-line);
  padding: 11px 18px; transition: all .2s;
}
.cap-modal-cta:hover { background: var(--accent-dim); border-color: var(--accent); }
.cap-modal-cta:empty { display: none; }
@media (prefers-reduced-motion: reduce) {
  .cap-modal, .cap-overlay { transition: none; }
  .cp-node, .cp-label, .cm-ring circle.fill { transition: none; }
}

/* skill bars */
.bars { margin-top: 64px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 64px; }
@media (max-width: 720px){ .bars { grid-template-columns: 1fr; } }
.bar .bar-top { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 13px; margin-bottom: 11px; }
.bar .bar-top .pct { color: var(--accent); }
.bar .track { height: 2px; background: var(--line); position: relative; overflow: hidden; }
.bar .fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--accent); transition: width 1.2s cubic-bezier(.2,.7,.2,1); }

/* ============================================================
   SHOWCASE  (Vibe Coding)
   ============================================================ */
.showcase-head { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; font-family: var(--font-mono); font-size: 12.5px; color: var(--text-2); flex-wrap: wrap; }
.live { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); }
.live .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse 2.4s infinite; }

.case-tag { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); display: flex; align-items: center; gap: 11px; margin-bottom: 16px; }
.case-tag::before { content: ""; width: 24px; height: 2px; background: var(--accent); display: inline-block; }

.proj-hero { border: 1px solid var(--line); background: linear-gradient(180deg, var(--surface), var(--bg)); padding: clamp(28px,4vw,48px); position: relative; overflow: hidden; }
.proj-hero::before { content: ""; position: absolute; inset: -1px; background: linear-gradient(120deg, transparent 30%, var(--accent-line) 50%, transparent 70%); background-size: 260% 100%; animation: borderSweep 6s linear infinite; opacity: .35; pointer-events: none; }
@keyframes borderSweep { to { background-position: -260% 0; } }
@media (prefers-reduced-motion: reduce) { .proj-hero::before { animation: none; opacity: 0; } }
.proj-hero > * { position: relative; }
.proj-hero h3 { font-family: var(--font-display); font-weight: 700; font-size: clamp(26px,3.4vw,42px); letter-spacing: -0.02em; margin-bottom: 18px; }
.proj-hero p { color: var(--text-2); font-size: clamp(15px,1.5vw,17px); line-height: 1.8; max-width: 75ch; }
.tech-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.tech-row .chip.solid { background: var(--accent-dim); border-color: var(--accent-line); color: var(--accent); }

.demo-btn {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 26px;
  background: var(--accent); color: #0a0a0b; border: none; cursor: pointer;
  font-family: var(--font-mono); font-size: 13px; font-weight: 700; letter-spacing: 0.04em;
  padding: 13px 22px; transition: transform .2s, box-shadow .2s; text-decoration: none;
}
.demo-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px oklch(0.90 0.20 128 / 0.25); }
.demo-btn .play { font-size: 11px; }
.demo-btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent-line); }
.demo-btn.ghost:hover { box-shadow: none; border-color: var(--accent); }

/* hover floating live preview */
.demo-wrap { position: relative; display: inline-block; }
.demo-pop {
  position: absolute; bottom: calc(100% + 16px); left: 0; z-index: 30;
  width: 720px; background: var(--bg-2); border: 1px solid var(--accent-line);
  box-shadow: 0 30px 90px var(--shadow-d), 0 0 40px var(--accent-line);
  opacity: 0; visibility: hidden; transform: translateY(10px) scale(.985);
  transition: opacity .28s cubic-bezier(.2,.6,.2,1), transform .28s cubic-bezier(.2,.6,.2,1), visibility .28s;
  pointer-events: none;
}
.demo-wrap:hover .demo-pop, .demo-wrap:focus-within .demo-pop {
  opacity: 1; visibility: visible; transform: none;
}
.demo-pop .pop-head {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 14px; border-bottom: 1px solid var(--line-2);
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3);
}
.demo-pop .pop-head .d { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse 2.4s infinite; }
.demo-pop .pop-body { width: 720px; height: 480px; overflow: hidden; position: relative; }
.demo-pop iframe {
  width: 1080px; height: 720px; border: 0;
  transform: scale(0.6667); transform-origin: top left;
  pointer-events: none; background: var(--bg);
}
@media (max-width: 900px), (hover: none) { .demo-pop { display: none; } }

.proj-stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line-2); border: 1px solid var(--line-2); margin-top: 32px; }
.proj-stats .ps { background: var(--bg); padding: 24px 20px; }
.proj-stats .v { font-family: var(--font-display); font-weight: 700; font-size: clamp(30px,4vw,48px); letter-spacing: -0.02em; color: var(--accent); }
.proj-stats .k { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); margin-top: 8px; }
@media (max-width: 640px){ .proj-stats { grid-template-columns: repeat(2,1fr); } }

.code-wrap { margin-top: 32px; border: 1px solid var(--code-line); background: var(--code-bg); transition: background .35s ease, border-color .35s ease; }
.code-head { display: flex; align-items: center; gap: 9px; padding: 12px 16px; border-bottom: 1px solid var(--code-line); font-family: var(--font-mono); font-size: 12px; color: var(--code-text-dim); }
.code-head .dots { display: flex; gap: 6px; }
.code-head .dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--code-line); display: inline-block; }
.code-wrap pre { padding: 22px; overflow-x: auto; font-family: var(--font-mono); font-size: 13px; line-height: 1.7; color: var(--code-text-dim); }
.code-wrap pre .c { color: var(--code-accent); }
.code-wrap pre .k { color: var(--code-keyword); }
.code-wrap pre .s { color: var(--code-text); }

.feat-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-top: 24px; }
@media (max-width: 900px){ .feat-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 520px){ .feat-grid { grid-template-columns: 1fr; } }
.feat { border: 1px solid var(--line); padding: 22px; background: var(--surface); }
.feat .ix { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }
.feat h5 { font-family: var(--font-display); font-weight: 600; font-size: 16px; margin: 12px 0 8px; }
.feat p { color: var(--text-3); font-size: 13.5px; line-height: 1.65; }

/* ============================================================
   EXPERIENCE  (timeline)
   ============================================================ */
.timeline { border-left: 1px solid var(--line); margin-left: 6px; }
.tl-item { position: relative; padding: 0 0 56px 38px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -5px; top: 7px;
  width: 9px; height: 9px; border-radius: 50%; background: var(--bg); border: 1px solid var(--text-3);
}
.tl-item.now::before { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 14px var(--accent-line); }
.tl-top { display: flex; justify-content: space-between; align-items: baseline; gap: 18px; flex-wrap: wrap; }
.tl-role { font-family: var(--font-display); font-weight: 600; font-size: clamp(19px,2.2vw,26px); letter-spacing: -0.01em; }
.tl-date { font-family: var(--font-mono); font-size: 12.5px; color: var(--accent); white-space: nowrap; letter-spacing: 0.04em; }
.tl-org { color: var(--text-2); font-size: 14px; margin: 8px 0 16px; font-family: var(--font-mono); }
.tl-list { list-style: none; display: grid; gap: 9px; }
.tl-list li { color: var(--text-2); font-size: 14.5px; line-height: 1.6; padding-left: 18px; position: relative; }
.tl-list li::before { content: ""; position: absolute; left: 0; top: 11px; width: 6px; height: 1px; background: var(--text-3); }

/* ============================================================
   PROJECTS
   ============================================================ */
.proj-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--line-2); border: 1px solid var(--line-2); }
@media (max-width: 760px){ .proj-grid { grid-template-columns: 1fr; } }
.pcard.wide { grid-column: 1 / -1; }
.pcard.wide h3 { max-width: none; }
.pcard { background: var(--bg); padding: 34px 30px; transition: background .3s, box-shadow .3s; }
.pcard:hover { background: var(--surface); box-shadow: inset 0 0 0 1px var(--accent-line), 0 14px 44px var(--shadow-a); }
.pcard:hover h3 { color: var(--accent); }
.pcard h3 { transition: color .25s; }
.pcard .ptop { display: flex; justify-content: space-between; align-items: baseline; gap: 14px; }
.pcard h3 { font-family: var(--font-display); font-weight: 600; font-size: clamp(18px,2vw,23px); letter-spacing: -0.01em; max-width: 22ch; }
.pcard .pdate { font-family: var(--font-mono); font-size: 11.5px; color: var(--accent); white-space: nowrap; }
.pcard .porg { font-family: var(--font-mono); font-size: 12px; color: var(--text-3); margin: 9px 0 16px; }
.pcard p { color: var(--text-2); font-size: 14px; line-height: 1.7; }
.pcard .chips { margin-top: 18px; }

/* ============================================================
   SKILLS MATRIX
   ============================================================ */
.skill-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--line-2); border: 1px solid var(--line-2); }
@media (max-width: 860px){ .skill-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px){ .skill-grid { grid-template-columns: 1fr; } }
.skill-col { background: var(--bg); padding: 28px 26px; }
.skill-col h4 { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 18px; }
.skill-col ul { list-style: none; display: grid; gap: 12px; }
.skill-col li { font-size: 14.5px; color: var(--text-2); display: flex; align-items: center; gap: 10px; }
.skill-col li::before { content: ""; width: 5px; height: 5px; background: var(--accent); flex-shrink: 0; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact { text-align: left; }
.contact .big {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(40px, 9vw, 130px); line-height: 0.9; letter-spacing: -0.03em;
  margin-bottom: 44px;
}
.contact-links { display: flex; flex-wrap: wrap; gap: 14px; }
.clink {
  display: inline-flex; align-items: center; gap: 12px;
  border: 1px solid var(--line); padding: 16px 22px;
  font-family: var(--font-mono); font-size: 14px; color: var(--text);
  transition: all .25s;
}
.clink:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.clink .ic { color: var(--accent); }
.loc { font-family: var(--font-mono); font-size: 13px; color: var(--text-3); margin-top: 28px; }

.footer { border-top: 1px solid var(--line-2); padding: 30px var(--pad); text-align: center; font-family: var(--font-mono); font-size: 12px; color: var(--text-3); letter-spacing: 0.04em; }

/* print button (web only) */
.print-fab {
  position: fixed; right: 22px; bottom: 22px; z-index: 60;
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--accent); color: #0a0a0b; border: none; cursor: pointer;
  font-family: var(--font-mono); font-size: 12px; font-weight: 700; letter-spacing: 0.08em;
  padding: 12px 18px; border-radius: 100px; text-transform: uppercase;
  box-shadow: 0 8px 30px var(--shadow-b);
  transition: transform .2s;
}
.print-fab:hover { transform: translateY(-2px); }