:root {
      color-scheme: dark;
      --bg: hsl(0 18% 7%);
      --bg-deep: hsl(0 20% 5%);
      --bg-section: hsl(0 13% 9%);
      --bg-soft: hsl(0 12% 11%);
      --panel: hsl(0 10% 13%);
      --panel-raised: hsl(0 9% 16%);
      --panel-sunken: hsl(0 14% 8%);
      --ink: hsl(38 24% 93%);
      --ink-strong: hsl(38 30% 98%);
      --muted: hsl(32 9% 67%);
      --quiet: hsl(30 7% 49%);
      --line: hsl(0 8% 24%);
      --line-strong: hsl(358 51% 36%);
      --accent: hsl(358 73% 45%);
      --accent-bright: hsl(1 79% 60%);
      --accent-deep: hsl(357 77% 31%);
      --accent-soft: hsl(358 73% 45% / .12);
      --accent-haze: hsl(358 73% 45% / .07);
      --focus: hsl(8 90% 65%);
      --radius: 2px;
      --max-width: 1180px;
      --nav-height: 74px;
      --gutter: clamp(1rem, 3vw, 1.5rem);
      --section-y: clamp(4.2rem, 7vw, 6.2rem);
      --shadow-hard: 0 24px 70px hsl(0 0% 0% / .36);
      --shadow-red: 0 0 32px hsl(358 73% 45% / .13);
      --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
      --fast: 160ms cubic-bezier(.2, .8, .2, 1);
      --medium: 280ms cubic-bezier(.2, .8, .2, 1);
      --slow: 720ms cubic-bezier(.16, 1, .3, 1);
      --ambient-opacity: 1;
    }

    * { box-sizing: border-box; }

    html {
      min-width: 320px;
      scroll-behavior: smooth;
      scroll-padding-top: calc(var(--nav-height) + 22px);
      background: var(--bg);
    }

    body {
      min-height: 100vh;
      margin: 0;
      overflow-x: hidden;
      color: var(--ink);
      background: var(--bg);
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.72;
      text-rendering: optimizeLegibility;
    }

    body.menu-open { overflow: hidden; }
    body.page-paused * { animation-play-state: paused !important; }
    [hidden] { display: none !important; }
    img, svg { display: block; }
    figure { margin: 0; }
    img { max-width: 100%; height: auto; }
    a { color: inherit; text-decoration: none; }
    button, input, textarea { font: inherit; }
    button { color: inherit; }
    ::selection { color: var(--ink-strong); background: hsl(358 73% 45% / .48); }

    .sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }

    .skip-link {
      position: fixed;
      top: .85rem;
      left: 1rem;
      z-index: 1200;
      transform: translateY(-150%);
      border: 1px solid var(--accent-bright);
      background: var(--accent);
      color: var(--ink-strong);
      padding: .78rem 1rem;
      font-weight: 900;
      transition: transform var(--fast);
    }

    .skip-link:focus { transform: translateY(0); }

    .progress-bar {
      position: fixed;
      top: 0;
      left: 0;
      z-index: 1300;
      width: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--accent-deep), var(--accent-bright));
    }

    .ambient-background {
      position: fixed;
      inset: 0;
      z-index: -2;
      overflow: hidden;
      pointer-events: none;
      opacity: var(--ambient-opacity);
      background:
        linear-gradient(hsl(0 0% 100% / .018) 1px, transparent 1px),
        linear-gradient(90deg, hsl(0 0% 100% / .014) 1px, transparent 1px),
        radial-gradient(circle at 82% 7%, hsl(358 73% 45% / .12), transparent 34rem),
        radial-gradient(circle at 12% 24%, hsl(358 73% 45% / .055), transparent 24rem),
        var(--bg);
      background-size: 44px 44px, 44px 44px, auto, auto, auto;
    }

    .ambient-background::before,
    .ambient-background::after {
      content: "";
      position: absolute;
      inset: -20% -10%;
      opacity: .42;
      background: linear-gradient(100deg, transparent 0 42%, hsl(358 73% 45% / .16) 48%, transparent 54% 100%);
      transform: translate3d(-18%, 0, 0) rotate(-4deg);
      animation: redSweep 18s cubic-bezier(.4, 0, .2, 1) infinite;
    }

    .ambient-background::after {
      opacity: .22;
      transform: translate3d(20%, 0, 0) rotate(5deg);
      animation-duration: 26s;
      animation-delay: -9s;
    }

    .bg-fragment {
      position: absolute;
      display: block;
      width: var(--w, 54px);
      height: var(--h, 1px);
      border: 1px solid hsl(358 73% 45% / .22);
      opacity: var(--o, .18);
      transform: translate3d(var(--x, 0), var(--y, 0), 0) rotate(var(--r, 0deg));
      animation: fragmentDrift var(--d, 22s) ease-in-out infinite alternate;
      animation-delay: var(--delay, 0s);
      will-change: transform, opacity;
    }

    .bg-fragment-1 { --x: 8vw; --y: 12vh; --w: 42px; --h: 12px; --r: 0deg; --d: 23s; --delay: -3s; }
    .bg-fragment-2 { --x: 78vw; --y: 16vh; --w: 70px; --h: 1px; --r: 0deg; --d: 19s; --delay: -7s; }
    .bg-fragment-3 { --x: 88vw; --y: 38vh; --w: 28px; --h: 28px; --r: 0deg; --d: 27s; --delay: -2s; }
    .bg-fragment-4 { --x: 18vw; --y: 50vh; --w: 90px; --h: 1px; --r: 90deg; --d: 28s; --delay: -11s; }
    .bg-fragment-5 { --x: 62vw; --y: 70vh; --w: 54px; --h: 16px; --r: 0deg; --d: 24s; --delay: -5s; }
    .bg-fragment-6 { --x: 32vw; --y: 82vh; --w: 46px; --h: 1px; --r: -8deg; --d: 21s; --delay: -8s; }
    .bg-fragment-7 { --x: 52vw; --y: 10vh; --w: 18px; --h: 18px; --r: 0deg; --d: 30s; --delay: -4s; }
    .bg-fragment-8 { --x: 5vw; --y: 76vh; --w: 72px; --h: 1px; --r: 2deg; --d: 26s; --delay: -14s; }
    .bg-fragment-9 { --x: 91vw; --y: 84vh; --w: 38px; --h: 10px; --r: 0deg; --d: 25s; --delay: -10s; }
    .bg-fragment-10 { --x: 41vw; --y: 30vh; --w: 58px; --h: 1px; --r: -90deg; --d: 29s; --delay: -6s; }
    .bg-fragment-11 { --x: 70vw; --y: 56vh; --w: 22px; --h: 22px; --r: 0deg; --d: 24s; --delay: -1s; }
    .bg-fragment-12 { --x: 22vw; --y: 25vh; --w: 64px; --h: 1px; --r: 0deg; --d: 20s; --delay: -12s; }
    .bg-fragment-13 { --x: 12vw; --y: 92vh; --w: 26px; --h: 26px; --r: 0deg; --d: 31s; --delay: -9s; }
    .bg-fragment-14 { --x: 96vw; --y: 18vh; --w: 86px; --h: 1px; --r: 90deg; --d: 28s; --delay: -16s; }
    .bg-fragment-15 { --x: 47vw; --y: 64vh; --w: 34px; --h: 12px; --r: 0deg; --d: 23s; --delay: -13s; }
    .bg-fragment-16 { --x: 64vw; --y: 36vh; --w: 48px; --h: 1px; --r: 6deg; --d: 22s; --delay: -15s; }
    .bg-fragment-17 { --x: 28vw; --y: 8vh; --w: 18px; --h: 18px; --r: 0deg; --d: 26s; --delay: -17s; }
    .bg-fragment-18 { --x: 84vw; --y: 66vh; --w: 74px; --h: 1px; --r: -4deg; --d: 32s; --delay: -18s; }

    @keyframes redSweep {
      0%, 100% { transform: translate3d(-22%, 0, 0) rotate(-4deg); opacity: .1; }
      45% { opacity: .34; }
      60% { transform: translate3d(22%, 0, 0) rotate(-4deg); opacity: .2; }
    }

    @keyframes fragmentDrift {
      0% { transform: translate3d(var(--x), var(--y), 0) rotate(var(--r)); opacity: calc(var(--o, .18) * .45); }
      100% { transform: translate3d(calc(var(--x) + 16px), calc(var(--y) - 22px), 0) rotate(calc(var(--r) + 3deg)); opacity: var(--o, .18); }
    }

    .site-header {
      position: fixed;
      top: 0;
      right: 0;
      left: 0;
      z-index: 1100;
      height: var(--nav-height);
      border-bottom: 1px solid hsl(0 8% 24% / .45);
      transition: background var(--medium), border-color var(--medium), backdrop-filter var(--medium), box-shadow var(--medium);
    }

    .site-header.scrolled {
      background: hsl(0 18% 7% / .84);
      border-color: hsl(358 73% 45% / .34);
      backdrop-filter: blur(15px);
      box-shadow: 0 14px 36px hsl(0 0% 0% / .24);
    }

    .nav-shell {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      width: min(100%, var(--max-width));
      height: 100%;
      margin: 0 auto;
      padding: 0 var(--gutter);
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: .78rem;
      min-height: 44px;
      font-weight: 900;
      letter-spacing: .015em;
    }

    .brand-mark { width: 36px; height: 36px; flex: 0 0 auto; color: var(--accent); }
    .brand-name { color: var(--ink-strong); }

    .nav-links {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: .16rem;
    }

    .nav-links a {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      border: 1px solid transparent;
      padding: .62rem .82rem;
      color: var(--muted);
      font-size: .92rem;
      font-weight: 750;
      letter-spacing: .01em;
      transition: color var(--fast), background var(--fast), border-color var(--fast);
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--ink-strong);
      background: hsl(0 0% 100% / .028);
    }

    .nav-indicator {
      position: absolute;
      bottom: 3px;
      left: 0;
      width: var(--nav-indicator-width, 0px);
      height: 2px;
      background: var(--accent-bright);
      transform: translate3d(var(--nav-indicator-x, 0px), 0, 0);
      transition: transform var(--medium), width var(--medium), opacity var(--medium);
      opacity: var(--nav-indicator-opacity, 0);
      pointer-events: none;
    }

    .menu-toggle {
      display: none;
      width: 46px;
      height: 42px;
      border: 1px solid var(--line);
      background: hsl(0 10% 11% / .62);
      color: var(--ink-strong);
      cursor: pointer;
    }

    .menu-toggle span {
      display: block;
      width: 21px;
      height: 2px;
      margin: 5px auto;
      background: currentColor;
      transition: transform var(--fast), opacity var(--fast);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    main { padding-top: var(--nav-height); }
    section { scroll-margin-top: calc(var(--nav-height) + 22px); }

    .section {
      position: relative;
      isolation: isolate;
      padding: var(--section-y) var(--gutter);
      overflow: hidden;
    }

    .section.alt {
      background: linear-gradient(180deg, hsl(0 12% 10% / .86), hsl(0 12% 9% / .94));
      border-top: 1px solid hsl(0 8% 24% / .58);
      border-bottom: 1px solid hsl(0 8% 24% / .52);
    }

    .container {
      position: relative;
      z-index: 2;
      width: min(100%, var(--max-width));
      margin: 0 auto;
    }

    .section-head {
      max-width: 800px;
      margin-bottom: clamp(2rem, 4vw, 3rem);
    }

    .kicker,
    .label,
    .status,
    .tag,
    .credential-type {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: fit-content;
      border: 1px solid hsl(358 73% 45% / .48);
      background: hsl(358 73% 45% / .09);
      color: var(--accent-bright);
      text-transform: uppercase;
      letter-spacing: .07em;
      font-size: .72rem;
      font-weight: 900;
      line-height: 1;
    }

    .kicker,
    .label,
    .status,
    .credential-type { padding: .5rem .64rem; }

    .status {
      color: var(--ink-strong);
      text-transform: none;
      letter-spacing: .045em;
      border-color: hsl(358 73% 45% / .58);
    }

    h1,
    h2,
    h3,
    h4 {
      margin: 0;
      color: var(--ink-strong);
      line-height: 1.05;
      letter-spacing: -.055em;
      text-wrap: balance;
    }

    h1 { max-width: 920px; font-size: clamp(2.9rem, 7vw, 6.1rem); line-height: .98; }
    h2 { font-size: clamp(2rem, 4.4vw, 3.85rem); }
    h3 { font-size: clamp(1.2rem, 2.1vw, 1.55rem); }
    h4 { font-size: 1rem; letter-spacing: -.018em; }
    p { margin: 0; color: var(--muted); text-wrap: pretty; }
    .lead { max-width: 70ch; font-size: clamp(1rem, 1.65vw, 1.18rem); }
    .section-head h2 + .lead { margin-top: .82rem; }
    .section-head .label + h2, .section-head .kicker + h2 { margin-top: .95rem; }

    .button-row {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: .8rem;
      margin-top: .5rem;
    }

    .btn {
      position: relative;
      overflow: hidden;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: .55rem;
      min-height: 46px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
      color: var(--ink-strong);
      padding: .82rem 1.05rem;
      font-weight: 900;
      letter-spacing: .015em;
      cursor: pointer;
      transition: transform var(--fast), border-color var(--fast), background var(--fast), color var(--fast);
    }

    .btn::after {
      content: "";
      position: absolute;
      right: 0;
      bottom: 0;
      left: 0;
      height: 2px;
      background: var(--accent-bright);
      transform: translateX(-105%);
      transition: transform var(--medium);
    }

    .btn.primary { background: var(--accent); border-color: var(--accent-bright); color: var(--ink-strong); }
    .btn:hover { transform: translateY(-2px); border-color: var(--accent); background: var(--accent-deep); color: var(--ink-strong); }
    .btn:hover::after { transform: translateX(0); }
    .btn svg { width: 18px; height: 18px; flex: 0 0 auto; transition: transform var(--fast); }
    .btn:hover svg { transform: translateX(3px); }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--focus);
      outline-offset: 3px;
    }

    .scroll-route {
      display: none;
      position: fixed;
      top: calc(var(--nav-height) + 2rem);
      bottom: 3rem;
      left: max(1rem, calc((100vw - var(--max-width)) / 2 + .15rem));
      z-index: 0;
      width: 24px;
      pointer-events: none;
      opacity: .62;
    }

    .scroll-route-track,
    .scroll-route-fill {
      position: absolute;
      top: 0;
      bottom: 0;
      left: 11px;
      width: 1px;
      background: hsl(0 8% 24% / .45);
    }

    .scroll-route-fill {
      background: linear-gradient(180deg, var(--accent-bright), var(--accent), var(--accent-deep));
      transform: scaleY(0);
      transform-origin: top;
      box-shadow: 0 0 18px hsl(358 73% 45% / .34);
    }

    .scroll-route-node {
      position: absolute;
      top: var(--node-y);
      left: 6px;
      width: 11px;
      height: 11px;
      border: 1px solid hsl(358 73% 45% / .58);
      background: var(--bg-deep);
      transform: rotate(45deg) scale(.82);
      transition: transform var(--medium), background var(--medium), border-color var(--medium), box-shadow var(--medium);
    }

    .scroll-route-node.active {
      background: var(--accent);
      border-color: var(--accent-bright);
      transform: rotate(45deg) scale(1);
      box-shadow: 0 0 18px hsl(358 73% 45% / .34);
    }

    .hero-name-gradient {
      width: fit-content;
      max-width: 100%;
      background: linear-gradient(100deg, var(--ink-strong), var(--accent-bright), var(--accent), var(--ink-strong));
      background-size: 220% 100%;
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      -webkit-text-fill-color: transparent;
      animation: heroNameReveal 860ms cubic-bezier(.16, 1, .3, 1) var(--hero-delay, 260ms) both, heroNameGradient 4.8s cubic-bezier(.45, 0, .25, 1) 1.2s infinite alternate;
    }

    .hero-enter {
      opacity: 0;
      transform: translateY(16px);
      filter: blur(7px);
      clip-path: inset(0 0 100% 0);
      animation: heroContentReveal 680ms cubic-bezier(.16, 1, .3, 1) var(--hero-delay, 0ms) both;
    }

    .hero-enter--soft {
      clip-path: inset(0 0 16% 0);
    }

    @keyframes heroContentReveal {
      0% { opacity: 0; transform: translateY(16px); filter: blur(7px); clip-path: inset(0 0 100% 0); letter-spacing: .035em; }
      100% { opacity: 1; transform: translateY(0); filter: blur(0); clip-path: inset(0 0 0 0); letter-spacing: inherit; }
    }

    @keyframes heroNameReveal {
      0% { opacity: 0; transform: translateY(18px); filter: blur(8px); clip-path: inset(0 0 100% 0); letter-spacing: -.025em; }
      100% { opacity: 1; transform: translateY(0); filter: blur(0); clip-path: inset(0 0 0 0); letter-spacing: -.055em; }
    }

    @keyframes heroNameGradient {
      0% { background-position: 0% 50%; }
      100% { background-position: 100% 50%; }
    }

    @keyframes portraitRailEntrance {
      0% { opacity: 0; transform: translate3d(var(--portrait-x, 0px), calc(-50% + 18px + var(--portrait-y, 0px)), 90px); filter: blur(8px); }
      100% { opacity: 1; transform: translate3d(var(--portrait-x, 0px), calc(-50% + var(--portrait-y, 0px)), 90px); filter: blur(0); }
    }

    @keyframes portraitClipReveal {
      0% { clip-path: polygon(0 0, 100% 0, 100% 0, 0 0); }
      100% { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
    }

    @keyframes portraitLightSweep {
      0% { transform: translateX(-120%); opacity: 0; }
      18% { opacity: 1; }
      100% { transform: translateX(120%); opacity: 0; }
    }

    @keyframes portraitEdgeTrace {
      0% { opacity: 0; transform: scaleX(.05); }
      100% { opacity: .9; transform: scaleX(1); }
    }

    .hero {
      display: grid;
      align-items: center;
      min-height: calc(100vh - var(--nav-height));
      padding: clamp(4.8rem, 9vw, 7rem) var(--gutter) clamp(3rem, 6vw, 5rem);
      perspective: 1200px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(420px, .95fr);
      gap: clamp(2rem, 5vw, 4.8rem);
      align-items: center;
    }

    .hero-copy { display: grid; gap: 1.16rem; }
    .hero-status-row { display: flex; align-items: center; flex-wrap: wrap; gap: .65rem; margin-bottom: .35rem; }
    .hero-role { color: var(--accent-bright); font-size: .84rem; font-weight: 900; letter-spacing: .035em; text-transform: uppercase; }

    .hero-visual {
      position: relative;
      min-height: clamp(500px, 58vw, 690px);
      perspective: 1200px;
      transform-style: preserve-3d;
    }

    .portrait-rail {
      position: absolute;
      right: clamp(.25rem, 2.5vw, 1.6rem);
      top: 50%;
      z-index: 5;
      width: min(96%, 500px);
      transform: translate3d(var(--portrait-x, 0px), calc(-50% + var(--portrait-y, 0px)), 90px);
      padding-left: .82rem;
      transition: transform 520ms cubic-bezier(.16, 1, .3, 1), filter var(--medium);
      will-change: transform;
      animation: portraitRailEntrance 940ms cubic-bezier(.16, 1, .3, 1) 760ms both;
    }

    .portrait-rail::before {
      content: "";
      position: absolute;
      top: 1rem;
      bottom: 1rem;
      left: 0;
      width: 4px;
      background: linear-gradient(180deg, var(--accent-bright), var(--accent-deep));
      box-shadow: 0 0 28px hsl(358 73% 45% / .45);
    }

    .portrait-frame {
      position: relative;
      aspect-ratio: 4 / 5;
      overflow: hidden;
      border: 1px solid hsl(358 73% 45% / .5);
      border-radius: var(--radius);
      background: var(--panel);
      box-shadow: var(--shadow-hard);
      clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
      animation: portraitClipReveal 980ms cubic-bezier(.16, 1, .3, 1) 720ms both;
    }

    .portrait-frame::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: 2;
      background: linear-gradient(110deg, transparent 0 34%, hsl(358 100% 70% / .24) 48%, transparent 63% 100%);
      transform: translateX(-120%);
      animation: portraitLightSweep 980ms cubic-bezier(.16, 1, .3, 1) 1180ms both;
      pointer-events: none;
    }

    .portrait-frame::after {
      content: "";
      position: absolute;
      inset: 0;
      z-index: 3;
      border-top: 2px solid var(--accent-bright);
      border-left: 1px solid hsl(358 73% 45% / .55);
      opacity: .9;
      pointer-events: none;
      transform-origin: left top;
      animation: portraitEdgeTrace 900ms cubic-bezier(.16, 1, .3, 1) 900ms both;
    }

    .portrait-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center 20%;
      filter: contrast(1.02) saturate(.98);
      transition: transform var(--medium), filter var(--medium);
    }

    .portrait-rail:hover { filter: drop-shadow(0 18px 30px hsl(358 73% 45% / .12)); }
    .portrait-frame:hover img { transform: translateY(-4px) scale(1.018); filter: contrast(1.08) saturate(1.02); }


    .hero-note-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .7rem; margin-top: 1rem; }
    .note-card { border: 1px solid var(--line); border-left: 3px solid var(--accent); background: hsl(0 10% 13% / .72); padding: .85rem; }
    .note-card span { display: block; color: var(--accent-bright); font-family: var(--mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .065em; }
    .note-card strong { display: block; margin-top: .35rem; color: var(--ink-strong); font-size: .95rem; }

    .skills-grid,
    .project-grid,
    .certificate-grid {
      display: grid;
      gap: 1rem;
    }

    .skills-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .certificate-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); perspective: 1200px; }

    .panel,
    .project-card,
    .certificate-card,
    .timeline-content,
    .contact-card {
      position: relative;
      border: 1px solid var(--line);
      border-left: 3px solid hsl(358 73% 45% / .72);
      border-radius: var(--radius);
      background: linear-gradient(180deg, hsl(0 10% 14% / .95), hsl(0 10% 12% / .98));
      transition: transform var(--fast), border-color var(--fast), background var(--fast), box-shadow var(--fast);
    }

    .panel:hover,
    .timeline-content:hover { transform: translateY(-3px); border-color: hsl(358 73% 45% / .56); box-shadow: var(--shadow-red); }
    .panel, .contact-card { padding: 1.25rem; }
    .panel p { margin-top: .62rem; }

    .tag-list { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1rem; }
    .tag { border-color: hsl(0 8% 26%); background: hsl(0 0% 100% / .035); color: hsl(29 15% 83%); padding: .42rem .52rem; text-transform: none; letter-spacing: .035em; font-size: .78rem; }

    .filter-row { display: flex; align-items: center; flex-wrap: wrap; gap: .55rem; margin-bottom: 1.35rem; }
    .filter-button { min-height: 38px; padding: .55rem .7rem; cursor: pointer; border-color: var(--line); color: var(--muted); background: hsl(0 0% 100% / .025); }
    .filter-button.active, .filter-button:hover { border-color: var(--accent); color: var(--ink-strong); background: var(--accent-soft); }

    .timeline { position: relative; display: grid; gap: 1rem; max-width: 980px; margin-left: .25rem; }
    .timeline::before { content: ""; position: absolute; top: 0; bottom: 0; left: 16px; width: 1px; background: linear-gradient(180deg, var(--accent), var(--line), var(--accent-deep)); }
    .timeline-item { position: relative; padding-left: 3.25rem; }
    .timeline-marker { position: absolute; top: 50%; left: 7px; width: 18px; height: 18px; transform: translateY(-50%); border: 2px solid var(--accent-bright); background: var(--accent); box-shadow: 0 0 0 5px hsl(358 73% 45% / .09); }
    .timeline-content { padding: 1.25rem 1.35rem; }
    .timeline-content p { margin-top: .62rem; }

    .project-card { display: flex; flex-direction: column; min-height: 290px; padding: 1.32rem; gap: .9rem; }
    .project-card.hidden-by-filter { pointer-events: none; }
    .project-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
    .project-image {
        position: relative;
        display: grid;
        place-items: center;
        width: 100%;
        aspect-ratio: 16 / 9;
        overflow: hidden;
        border: 1px solid var(--line);
        background: hsl(0 12% 8%);
        padding: .35rem;
    }
    
    .project-image img {
        width: 100%;
        height: 100%;
        object-fit: contain;
        object-position: center;
        transition:
            transform var(--medium),
            filter var(--medium);
    }
    
    .project-card:hover .project-image img {
        transform: scale(1.015);
        filter: contrast(1.04);
    }
    .project-icon, .cert-icon { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid hsl(358 73% 45% / .48); background: hsl(358 73% 45% / .09); color: var(--accent-bright); }
    .project-icon svg, .cert-icon svg { width: 24px; height: 24px; }
    .project-card .button-row { margin-top: auto; }
    .project-card .btn { min-height: 40px; padding: .64rem .82rem; font-size: .9rem; }

    .certificates-section {
      perspective: 1400px;
    }


    .certificate-card {
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transform-style: preserve-3d;
      will-change: transform;
      transition: transform 520ms cubic-bezier(.16, 1, .3, 1), border-color var(--medium), box-shadow var(--medium);
    }

    .certificate-card[data-cert="gemini"] { transform: translate3d(44px, -34px, 0) rotateZ(2deg); opacity: 0; }
    .certificate-card[data-cert="linux"] { transform: translate3d(0, 42px, 0); opacity: 0; }
    .certificate-card[data-cert="claude"] { transform: translate3d(-44px, -32px, 0) rotateZ(-2deg); opacity: 0; }
    .certificate-card.cert-visible { transform: translate3d(0, 0, 0) rotateZ(0deg); opacity: 1; }
    .certificate-card.cert-visible:nth-child(1) { transition-delay: 80ms; }
    .certificate-card.cert-visible:nth-child(2) { transition-delay: 180ms; }
    .certificate-card.cert-visible:nth-child(3) { transition-delay: 280ms; }

    .certificate-card:hover { border-color: hsl(358 73% 45% / .72); box-shadow: 0 28px 70px hsl(0 0% 0% / .36), 0 0 36px hsl(358 73% 45% / .16); }
    .certificate-preview { display: block; border-bottom: 1px solid var(--line); background: hsl(42 18% 86%); padding: .75rem; transform: translateZ(22px); transition: transform var(--medium), filter var(--medium); }
    .certificate-card:hover .certificate-preview { transform: translateZ(34px) scale(1.018); filter: contrast(1.03); }
    .certificate-preview img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: hsl(42 18% 86%); }
    .certificate-body { display: grid; flex: 1; gap: .82rem; padding: 1.2rem; transform: translateZ(12px); }
    .certificate-title-row { display: flex; align-items: flex-start; gap: .78rem; }
    .certificate-title-row h3 + p { margin-top: .35rem; }
    .certificate-card .btn { margin-top: auto; }
    .credential-details { display: grid; gap: .25rem; color: var(--quiet); font-size: .88rem; }

    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 1.2rem; align-items: start; }
    .social-list { display: grid; gap: .62rem; margin-top: 1.1rem; }
    .social-link { display: flex; align-items: center; justify-content: space-between; gap: 1rem; border: 1px solid var(--line); background: hsl(0 0% 100% / .025); padding: .85rem; color: var(--ink-strong); transition: transform var(--fast), border-color var(--fast), background var(--fast); }
    .social-link:hover { transform: translateX(3px); border-color: var(--accent); background: var(--accent-haze); }
    .social-link span:last-child { color: var(--muted); font-size: .9rem; }
    .contact-form { display: grid; gap: 1rem; }
    .contact-honeypot {
        position: absolute !important;
        left: -10000px !important;
        top: auto !important;
        width: 1px !important;
        height: 1px !important;
        overflow: hidden !important;
    }
    
    .form-status[data-state="success"] {
        color: hsl(140 55% 65%);
    }
    
    .form-status[data-state="error"] {
        color: hsl(8 90% 70%);
    }
    
    .contact-form button:disabled {
        opacity: .62;
        cursor: wait;
        pointer-events: none;
    }
    .field { display: grid; gap: .42rem; }
    label { color: var(--ink-strong); font-weight: 850; }
    input, textarea { width: 100%; border: 1px solid var(--line); border-radius: var(--radius); background: hsl(0 12% 8%); color: var(--ink-strong); padding: .9rem; transition: border-color var(--fast), background var(--fast); }
    textarea { min-height: 155px; resize: vertical; }
    input:hover, textarea:hover { border-color: hsl(0 8% 32%); }
    input[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: var(--accent-bright); background: hsl(358 73% 45% / .06); }
    .error { min-height: 1.1rem; color: hsl(8 90% 70%); font-size: .88rem; }
    .form-status { min-height: 1.35rem; color: var(--accent-bright); font-weight: 800; }

    .site-footer { border-top: 1px solid var(--line); background: hsl(0 18% 5%); padding: 1.5rem var(--gutter); }
    .footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; width: min(100%, var(--max-width)); margin: 0 auto; color: var(--muted); font-size: .92rem; }
    .back-to-top { position: fixed; right: 1rem; bottom: 1rem; z-index: 900; display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--accent); background: hsl(0 14% 10% / .92); color: var(--ink-strong); cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity var(--fast), transform var(--fast), background var(--fast); }
    .back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

    .reveal { opacity: 0; transform: translateY(18px); transition: opacity var(--slow), transform var(--slow), letter-spacing var(--slow); }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    .section-head.reveal { letter-spacing: .01em; }
    .section-head.reveal.visible { letter-spacing: 0; }
    .skill-reveal-left { transform: translateX(-22px); }
    .skill-reveal-right { transform: translateX(22px); }
    .skill-reveal-left.visible, .skill-reveal-right.visible { transform: translateX(0); }
    .project-card.reveal { transition-delay: var(--stagger, 0ms); }
    .timeline-item.reveal { transition-delay: var(--stagger, 0ms); }
    .project-card {
      overflow: hidden;
      --pointer-x: 50%;
      --pointer-y: 50%;
      --card-rx: 0deg;
      --card-ry: 0deg;
    }

    .project-card::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: 0;
      opacity: 0;
      background: radial-gradient(440px 220px at var(--pointer-x) var(--pointer-y), hsl(358 73% 45% / .16), transparent 68%);
      transition: opacity var(--medium);
      pointer-events: none;
    }

    .project-card::after {
      content: "";
      position: absolute;
      right: 1rem;
      bottom: 0;
      left: 1rem;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--accent-bright), transparent);
      transform: scaleX(0);
      transform-origin: center;
      transition: transform var(--medium);
      pointer-events: none;
    }

    .project-card > * { position: relative; z-index: 1; }
    .project-card:hover::before { opacity: 1; }
    .project-card:hover::after { transform: scaleX(1); }
    .project-card:hover .project-icon { transform: translate3d(3px, -3px, 0); }
    .project-card .project-icon { transition: transform var(--medium), border-color var(--medium), background var(--medium); }
    .project-card:hover .tag { transform: translateY(-1px); border-color: hsl(358 73% 45% / .38); }
    .project-card .tag { transition: transform var(--fast), border-color var(--fast), background var(--fast); }
    .project-card .tag:nth-child(2) { transition-delay: 24ms; }
    .project-card .tag:nth-child(3) { transition-delay: 48ms; }
    .project-card .tag:nth-child(4) { transition-delay: 72ms; }
    .project-card .tag:nth-child(5) { transition-delay: 96ms; }
    .project-card.filter-fading { opacity: 0; transform: translateY(12px) scale(.985); pointer-events: none; }
    .project-card.visible:hover { transform: translateY(-6px) rotateX(var(--card-rx)) rotateY(var(--card-ry)); border-color: hsl(358 73% 45% / .68); }

    .certificate-preview {
      position: relative;
      overflow: hidden;
    }

    .certificate-preview::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(110deg, transparent 0 36%, hsl(0 0% 100% / .22) 50%, transparent 64% 100%);
      transform: translateX(-120%);
      transition: transform 680ms cubic-bezier(.16, 1, .3, 1);
      pointer-events: none;
    }

    .certificate-card.cert-visible:hover {
      transform: translateY(-7px);
      border-color: hsl(358 73% 45% / .72);
    }

    .certificate-card:hover .certificate-preview::after { transform: translateX(120%); }

    .btn {
      --magnet-x: 0px;
      --magnet-y: 0px;
      transform: translate3d(var(--magnet-x), var(--magnet-y), 0);
    }

    .btn:hover { transform: translate3d(var(--magnet-x), calc(var(--magnet-y) - 2px), 0); }

    .timeline::before {
      transform: scaleY(0);
      transform-origin: top;
      transition: transform 1100ms cubic-bezier(.16, 1, .3, 1);
    }

    .timeline.timeline-visible::before { transform: scaleY(1); }
    .timeline-marker { opacity: .45; transition: opacity var(--medium), transform var(--medium), box-shadow var(--medium), background var(--medium); }
    .timeline-item.visible .timeline-marker { opacity: 1; animation: markerPulse 760ms cubic-bezier(.16, 1, .3, 1) 1; }

    @keyframes markerPulse {
      0% { box-shadow: 0 0 0 0 hsl(358 73% 45% / .28); }
      55% { box-shadow: 0 0 0 9px hsl(358 73% 45% / .14); }
      100% { box-shadow: 0 0 0 5px hsl(358 73% 45% / .09); }
    }

    @media (max-width: 1040px) {
      .certificate-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }

    @media (max-width: 900px) {
      :root { --nav-height: 68px; --section-y: clamp(3.7rem, 8vw, 5rem); }
      .menu-toggle { display: block; }
      .nav-links {
        position: fixed;
        top: var(--nav-height);
        right: var(--gutter);
        left: var(--gutter);
    
        display: grid;
        grid-template-columns: 1fr;
    
        width: auto;
        max-height: calc(100dvh - var(--nav-height) - 1rem);
    
        gap: .35rem;
        padding: .75rem;
    
        justify-content: stretch;
        align-items: stretch;
    
        overflow-y: auto;
    
        border: 1px solid hsl(358 73% 45% / .34);
    
        background: hsl(0 16% 7% / .98);
    
        box-shadow:
          0 22px 60px hsl(0 0% 0% / .5);
    
        opacity: 0;
        pointer-events: none;
    
        transform: translateY(-12px);
    
        transition:
          opacity var(--fast),
          transform var(--fast);
    
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
      }
    
      .nav-links.open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
      }
    
      .nav-links a {
        width: 100%;
      
        justify-content: flex-start;
    
        border: 1px solid var(--line);
    
        padding: .95rem;
      }
      .nav-indicator { display: none; }
      .hero-grid, .contact-grid { grid-template-columns: 1fr; }
      .hero-visual {
        min-height: 0;
    
        margin-top: 1.5rem;
      }
    
      .portrait-rail {
        position: relative;
    
        top: auto;
        right: auto;
        left: auto;
    
        width: min(100%, 420px);
    
        margin: 0 auto;
    
        transform: none !important;
    
        animation: none;
    
        padding-left: .82rem;
      }
      .project-grid { grid-template-columns: 1fr; }
      .scroll-route { display: none; }
    }

    @media (max-width: 700px) {
      .section { padding: 4.4rem var(--gutter); }
      .hero { padding-top: 3.8rem; }
      .hero-visual { min-height: 0; margin-top: 1rem; }
      .portrait-rail { width: min(100%, 380px); }
      .skills-grid, .certificate-grid { grid-template-columns: 1fr; }
      .button-row, .btn { width: 100%; }
      .hero-note-grid { grid-template-columns: 1fr; }
      .timeline-item { padding-left: 2.8rem; }
      .footer-inner { display: grid; }
      .certificate-card[data-cert] { transform: translate3d(0, 24px, 0); }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .001ms !important; }
      .reveal, .skill-reveal-left, .skill-reveal-right, .certificate-card[data-cert] { opacity: 1 !important; transform: none !important; }
      .hero-name-gradient { animation: none !important; background-position: 0 50% !important; }
      .hero-enter, .portrait-rail, .portrait-frame { animation: none !important; opacity: 1 !important; filter: none !important; clip-path: none !important; }
      .scroll-route-fill { transform: scaleY(1) !important; }
      .ambient-background::before, .ambient-background::after, .bg-fragment { animation: none !important; }
      .project-card.filter-fading { opacity: 1 !important; transform: none !important; }
    }
    /* =========================================================
       Project Case Study Modal
       ========================================================= */
    
    body.project-modal-open {
      overflow: hidden;
    }
    
    .project-modal {
      position: fixed;
      inset: 0;
      z-index: 2000;
    
      display: grid;
      place-items: center;
    
      padding: clamp(1rem, 3vw, 2rem);
    
      background: hsl(0 20% 4% / .84);
    
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    
      opacity: 0;
      visibility: hidden;
    
      transition:
        opacity var(--medium),
        visibility var(--medium);
    }
    
    .project-modal.is-open {
      opacity: 1;
      visibility: visible;
    }
    
    .project-modal-dialog {
      position: relative;
    
      width: min(100%, 980px);
      max-height: calc(100vh - 4rem);
    
      overflow-y: auto;
      overscroll-behavior: contain;
    
      border: 1px solid var(--line);
      border-left: 3px solid var(--accent);
    
      border-radius: var(--radius);
    
      background:
        linear-gradient(
          180deg,
          hsl(0 10% 14%),
          hsl(0 13% 9%)
        );
    
      box-shadow:
        0 32px 90px hsl(0 0% 0% / .6),
        0 0 50px hsl(358 73% 45% / .1);
    
      opacity: 0;
    
      transform:
        translateY(22px)
        scale(.985);
    
      transition:
        opacity var(--medium),
        transform var(--medium),
        border-color var(--medium);
    }
    
    .project-modal.is-open .project-modal-dialog {
      opacity: 1;
    
      transform:
        translateY(0)
        scale(1);
    }
    
    .project-modal-dialog:focus {
      outline: none;
    }
    
    .project-modal-dialog::-webkit-scrollbar {
      width: 8px;
    }
    
    .project-modal-dialog::-webkit-scrollbar-track {
      background: var(--panel-sunken);
    }
    
    .project-modal-dialog::-webkit-scrollbar-thumb {
      background: var(--line-strong);
    }
    
    .project-modal-dialog::-webkit-scrollbar-thumb:hover {
      background: var(--accent);
    }
    
    
    /* Close button */
    
    .project-modal-close {
      position: absolute;
      top: 1rem;
      right: 1rem;
      z-index: 5;
    
      display: grid;
      place-items: center;
    
      width: 44px;
      height: 44px;
    
      border: 1px solid var(--line);
      border-radius: var(--radius);
    
      background: hsl(0 12% 10% / .94);
    
      color: var(--ink-strong);
    
      font-size: 1.65rem;
      line-height: 1;
    
      cursor: pointer;
    
      transition:
        background var(--fast),
        border-color var(--fast),
        color var(--fast),
        transform var(--fast);
    }
    
    .project-modal-close:hover {
      border-color: var(--accent-bright);
      background: var(--accent-deep);
      color: var(--ink-strong);
    
      transform: scale(1.04);
    }
    
    
    /* Content */
    
    .project-modal-content {
      padding:
        clamp(1.5rem, 4vw, 3.2rem);
    }
    
    .project-modal-label {
      display: inline-flex;
    
      margin-bottom: 1rem;
    
      border: 1px solid hsl(358 73% 45% / .48);
    
      background: var(--accent-soft);
    
      color: var(--accent-bright);
    
      padding: .5rem .65rem;
    
      font-size: .72rem;
      font-weight: 900;
    
      line-height: 1;
    
      letter-spacing: .08em;
    
      text-transform: uppercase;
    }
    
    .project-modal-content h2 {
      max-width: 800px;
    
      padding-right: 3rem;
    
      font-size:
        clamp(2.2rem, 5vw, 4rem);
    }
    
    .project-modal-intro {
      max-width: 760px;
    
      margin-top: 1rem;
    
      font-size:
        clamp(1rem, 1.7vw, 1.15rem);
    
      line-height: 1.75;
    }
    
    
    /* Main project image */
    
    .project-modal-image {
      display: block;
    
      width: 100%;
    
      aspect-ratio: 16 / 9;
    
      margin-top: 2rem;
    
      border: 1px solid var(--line);
    
      background: var(--panel-sunken);
    
      object-fit: contain;
      object-position: center;
    
      padding: .4rem;
    }
    
    
    /* Technology tags */
    
    .project-modal-tags {
      display: flex;
      flex-wrap: wrap;
    
      gap: .45rem;
    
      margin-top: 1.2rem;
    }
    
    .project-modal-tags .tag {
      border-color: hsl(358 73% 45% / .32);
    
      background:
        hsl(358 73% 45% / .07);
    }
    
    
    /* Case study content */
    
    .project-modal-body {
      display: grid;
    
      gap: 2.4rem;
    
      margin-top: 3rem;
    }
    
    .project-modal-body section {
      position: relative;
    
      max-width: 820px;
    
      padding-left: 1.1rem;
    
      border-left:
        2px solid
        hsl(358 73% 45% / .38);
    }
    
    .project-modal-body h3 {
      margin-bottom: .7rem;
    
      color: var(--ink-strong);
    
      letter-spacing: -.035em;
    }
    
    .project-modal-body p {
      line-height: 1.8;
    }
    
    .project-modal-body ul {
      display: grid;
    
      gap: .55rem;
    
      margin:
        .85rem
        0
        0;
    
      padding-left: 1.25rem;
    
      color: var(--muted);
    }
    
    .project-modal-body li {
      padding-left: .25rem;
    }
    
    .project-modal-body strong {
      color: var(--ink-strong);
    }
    
    
    /* Bottom back button */
    
    .project-modal-footer {
      display: flex;
      justify-content: center;
    
      margin-top: 3.5rem;
    
      padding-top: 2rem;
    
      border-top:
        1px solid
        var(--line);
    }
    
    .project-modal-footer .btn {
      min-width: 190px;
    }
    
    
    /* Mobile */
    
    @media (max-width: 700px) {
      .project-modal {
        align-items: end;
    
        padding:
          3rem
          0
          0;
      }
    
      .project-modal-dialog {
        width: 100%;
        max-height: 94vh;
    
        border-right: 0;
        border-bottom: 0;
        border-left-width: 3px;
      }
    
      .project-modal-content {
        padding:
          1.4rem
          1rem
          2rem;
      }
    
      .project-modal-content h2 {
        padding-right: 3.2rem;
    
        font-size:
          clamp(2rem, 10vw, 3rem);
      }
    
      .project-modal-image {
        margin-top: 1.5rem;
      }
    
      .project-modal-body {
        gap: 2rem;
    
        margin-top: 2.4rem;
      }
    
      .project-modal-footer .btn {
        width: 100%;
      }
    }
    
    
    /* Accessibility */
    
    @media (prefers-reduced-motion: reduce) {
      .project-modal,
      .project-modal-dialog {
        transition: none !important;
      }
    }