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

    :root {
      --bg:        #0a0a0b;
      --surface:   #111113;
      --card:      #16161a;
      --border:    #242428;
      --green:     #22c55e;
      --green-dim: #16a34a;
      --green-glow:#22c55e33;
      --text:      #f0f0f2;
      --muted:     #8888a0;
      --accent:    #34d399;
    }

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: 'DM Sans', sans-serif;
      font-weight: 300;
      line-height: 1.7;
      overflow-x: hidden;
    }

    /* ─── NOISE TEXTURE OVERLAY ─── */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
      pointer-events: none;
      z-index: 9999;
      opacity: .5;
    }

    /* ─── HEADER / NAV ─── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.2rem 5vw;
      background: rgba(10,10,11,.82);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
    }

    .logo {
      display: flex;
      align-items: center;
      gap: .65rem;
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: 1.15rem;
      letter-spacing: -.02em;
      color: var(--text);
      text-decoration: none;
    }

    .logo-icon {
      width: 32px; height: 32px;
      background: var(--green);
      border-radius: 8px;
      display: grid;
      place-items: center;
      font-size: 1rem;
    }

    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
    }

    .nav-links a {
      color: var(--muted);
      text-decoration: none;
      font-size: .85rem;
      font-weight: 400;
      letter-spacing: .04em;
      text-transform: uppercase;
      transition: color .2s;
    }
    .nav-links a:hover { color: var(--green); }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: .5rem;
      padding: .55rem 1.2rem;
      background: var(--green);
      color: #000 !important;
      border-radius: 6px;
      font-weight: 500 !important;
      text-transform: none !important;
      font-size: .85rem !important;
      letter-spacing: 0 !important;
      transition: background .2s, transform .15s !important;
    }
    .nav-cta:hover { background: var(--accent) !important; transform: translateY(-1px); color: #000 !important; }

    /* ─── HERO ─── */
    .hero {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 8rem 5vw 5rem;
      position: relative;
      overflow: hidden;
    }

    .hero-glow {
      position: absolute;
      top: 20%;
      left: 50%;
      transform: translateX(-50%);
      width: 600px;
      height: 600px;
      background: radial-gradient(ellipse, rgba(34,197,94,.12) 0%, transparent 70%);
      pointer-events: none;
    }

    .hero-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
      background-size: 60px 60px;
      mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
      opacity: .4;
      pointer-events: none;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: .45rem;
      padding: .35rem .9rem;
      background: rgba(34,197,94,.1);
      border: 1px solid rgba(34,197,94,.25);
      border-radius: 100px;
      font-size: .75rem;
      font-weight: 500;
      color: var(--green);
      letter-spacing: .06em;
      text-transform: uppercase;
      margin-bottom: 1.8rem;
      animation: fadeUp .6s ease both;
    }

    .badge-dot {
      width: 6px; height: 6px;
      background: var(--green);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%,100% { opacity: 1; transform: scale(1); }
      50% { opacity: .5; transform: scale(.8); }
    }

    h1 {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: clamp(3rem, 7vw, 5.5rem);
      line-height: 1.0;
      letter-spacing: -.04em;
      margin-bottom: 1.5rem;
      animation: fadeUp .6s .1s ease both;
    }

    h1 span { color: var(--green); }

    .hero-sub {
      max-width: 52ch;
      color: var(--muted);
      font-size: 1.05rem;
      font-weight: 400;
      margin-bottom: 2.5rem;
      animation: fadeUp .6s .2s ease both;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      justify-content: center;
      animation: fadeUp .6s .3s ease both;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      padding: .8rem 1.8rem;
      background: var(--green);
      color: #000;
      border-radius: 8px;
      font-weight: 500;
      font-size: .95rem;
      text-decoration: none;
      transition: background .2s, transform .15s, box-shadow .2s;
      box-shadow: 0 0 0 0 var(--green-glow);
    }
    .btn-primary:hover {
      background: var(--accent);
      transform: translateY(-2px);
      box-shadow: 0 8px 30px var(--green-glow);
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      padding: .8rem 1.8rem;
      background: transparent;
      color: var(--text);
      border: 1px solid var(--border);
      border-radius: 8px;
      font-weight: 400;
      font-size: .95rem;
      text-decoration: none;
      transition: border-color .2s, transform .15s;
    }
    .btn-secondary:hover { border-color: var(--green); color: var(--green); transform: translateY(-2px); }

    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(20px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    /* ─── PROGRESS STRIP ─── */
    .progress-strip {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 2.5rem 5vw;
    }

    .progress-inner {
      max-width: 1100px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr auto;
      align-items: center;
      gap: 3rem;
    }

    .progress-label {
      font-family: 'Syne', sans-serif;
      font-size: .8rem;
      font-weight: 700;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--green);
      margin-bottom: .5rem;
    }

    .progress-title {
      font-family: 'Syne', sans-serif;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    .progress-bar-wrap {
      background: var(--border);
      border-radius: 100px;
      height: 8px;
      overflow: hidden;
      max-width: 600px;
    }

    .progress-bar {
      height: 100%;
      width: 48%;
      background: linear-gradient(90deg, var(--green-dim), var(--green));
      border-radius: 100px;
      position: relative;
      animation: growBar 1.2s .5s cubic-bezier(.22,1,.36,1) both;
    }

    @keyframes growBar {
      from { width: 0; }
      to   { width: 48%; }
    }

    .progress-bar::after {
      content: '';
      position: absolute;
      right: 0; top: 50%;
      transform: translateY(-50%);
      width: 12px; height: 12px;
      background: var(--green);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--green);
    }

    .progress-stats {
      display: flex;
      gap: 2.5rem;
    }

    .stat {
      text-align: center;
    }
    .stat-num {
      font-family: 'Syne', sans-serif;
      font-size: 2rem;
      font-weight: 800;
      color: var(--green);
      line-height: 1;
    }
    .stat-lbl {
      font-size: .75rem;
      color: var(--muted);
      margin-top: .2rem;
    }

    /* ─── SECTION BASE ─── */
    section { padding: 6rem 5vw; }

    .section-inner { max-width: 1100px; margin: 0 auto; }

    .section-tag {
      display: inline-block;
      font-size: .7rem;
      font-weight: 700;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: var(--green);
      margin-bottom: .8rem;
    }

    .section-title {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: clamp(1.8rem, 3.5vw, 2.6rem);
      letter-spacing: -.03em;
      line-height: 1.1;
      margin-bottom: 1rem;
    }

    .section-body {
      color: var(--muted);
      max-width: 55ch;
      font-size: .95rem;
      margin-bottom: 3rem;
    }

    /* ─── TIMELINE ─── */
    .timeline {
      display: flex;
      flex-direction: column;
      gap: 0;
      position: relative;
    }

    .timeline::before {
      content: '';
      position: absolute;
      left: 110px;
      top: 0; bottom: 0;
      width: 1px;
      background: var(--border);
    }

    .tl-item {
      display: grid;
      grid-template-columns: 110px 1fr;
      gap: 2rem;
      padding: 1.5rem 0;
      position: relative;
    }

    .tl-week {
      font-family: 'Syne', sans-serif;
      font-size: .8rem;
      font-weight: 700;
      color: var(--muted);
      letter-spacing: .06em;
      text-align: right;
      padding-top: .1rem;
    }

    .tl-dot {
      position: absolute;
      left: 104px;
      top: 1.85rem;
      width: 13px; height: 13px;
      border-radius: 50%;
      background: var(--border);
      border: 2px solid var(--border);
      z-index: 1;
    }

    .tl-item.done .tl-dot {
      background: var(--green);
      border-color: var(--green);
      box-shadow: 0 0 10px var(--green-glow);
    }

    .tl-item.active .tl-dot {
      background: var(--bg);
      border-color: var(--green);
      box-shadow: 0 0 14px var(--green);
      animation: dotPulse 2s infinite;
    }

    @keyframes dotPulse {
      0%,100% { box-shadow: 0 0 6px var(--green); }
      50% { box-shadow: 0 0 18px var(--green), 0 0 30px var(--green-glow); }
    }

    .tl-content {
      padding-left: 1.5rem;
    }

    .tl-phase {
      font-size: .7rem;
      font-weight: 700;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--green);
      margin-bottom: .3rem;
    }

    .tl-name {
      font-family: 'Syne', sans-serif;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: .4rem;
    }

    .tl-desc {
      font-size: .85rem;
      color: var(--muted);
      max-width: 50ch;
    }

    .tl-pills {
      display: flex;
      flex-wrap: wrap;
      gap: .4rem;
      margin-top: .6rem;
    }

    .pill {
      padding: .2rem .6rem;
      background: rgba(34,197,94,.08);
      border: 1px solid rgba(34,197,94,.2);
      border-radius: 4px;
      font-size: .7rem;
      font-weight: 500;
      color: var(--green);
    }

    .pill.gray {
      background: rgba(136,136,160,.08);
      border-color: rgba(136,136,160,.2);
      color: var(--muted);
    }

    /* ─── SCREENS SECTION ─── */
    .screens-section {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .screens-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      margin-top: 3rem;
    }

    .screen-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 16px;
      overflow: hidden;
      transition: border-color .25s, transform .25s;
    }
    .screen-card:hover {
      border-color: rgba(34,197,94,.35);
      transform: translateY(-4px);
    }

    .screen-img-wrap {
      width: 100%;
      aspect-ratio: 9/19;
      overflow: hidden;
      background: #0d0d10;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .screen-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: top;
    }

    .screen-info {
      padding: 1rem 1.1rem 1.2rem;
    }

    .screen-label {
      font-size: .65rem;
      font-weight: 700;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--green);
      margin-bottom: .3rem;
    }

    .screen-name {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: .9rem;
      line-height: 1.2;
      margin-bottom: .3rem;
    }

    .screen-desc {
      font-size: .75rem;
      color: var(--muted);
      line-height: 1.5;
    }

    /* ─── TECH STACK ─── */
    .tech-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 1px;
      background: var(--border);
      border: 1px solid var(--border);
      border-radius: 12px;
      overflow: hidden;
      margin-top: 3rem;
    }

    .tech-item {
      background: var(--card);
      padding: 1.5rem;
      display: flex;
      align-items: flex-start;
      gap: 1rem;
    }

    .tech-icon {
      width: 40px; height: 40px;
      background: rgba(34,197,94,.1);
      border-radius: 8px;
      display: grid;
      place-items: center;
      font-size: 1.2rem;
      flex-shrink: 0;
    }

    .tech-name {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: .9rem;
      margin-bottom: .2rem;
    }

    .tech-role {
      font-size: .75rem;
      color: var(--muted);
    }

    /* ─── CONTEXT SECTION ─── */
    .context-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
      margin-top: 3rem;
    }

    .context-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 1.8rem;
    }

    .context-card-title {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: .8rem;
      display: flex;
      align-items: center;
      gap: .6rem;
    }

    .context-card-title span {
      font-size: 1.2rem;
    }

    .context-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: .5rem;
    }

    .context-list li {
      display: flex;
      gap: .6rem;
      font-size: .85rem;
      color: var(--muted);
      align-items: flex-start;
    }

    .context-list li::before {
      content: '→';
      color: var(--green);
      flex-shrink: 0;
      margin-top: .05rem;
    }

    /* ─── TEAM ─── */
    .team-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 1.5rem;
      margin-top: 3rem;
    }

    .team-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 1.8rem;
      transition: border-color .25s;
    }
    .team-card:hover { border-color: rgba(34,197,94,.35); }

    .team-avatar {
      width: 48px; height: 48px;
      background: linear-gradient(135deg, var(--green-dim), var(--green));
      border-radius: 12px;
      display: grid;
      place-items: center;
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: 1.1rem;
      color: #000;
      margin-bottom: 1rem;
    }

    .team-name {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: .2rem;
    }

    .team-role {
      font-size: .8rem;
      color: var(--green);
      margin-bottom: .6rem;
    }

    .team-email {
      font-size: .78rem;
      color: var(--muted);
    }

    /* ─── FOOTER ─── */
    footer {
      background: var(--surface);
      border-top: 1px solid var(--border);
      padding: 3rem 5vw;
      text-align: center;
    }

    .footer-logo {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: 1.3rem;
      letter-spacing: -.03em;
      margin-bottom: .5rem;
    }
    .footer-logo span { color: var(--green); }

    .footer-sub {
      font-size: .8rem;
      color: var(--muted);
      margin-bottom: 1.5rem;
    }

    .footer-links {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
      flex-wrap: wrap;
    }

    .footer-links a {
      font-size: .8rem;
      color: var(--muted);
      text-decoration: none;
      transition: color .2s;
    }
    .footer-links a:hover { color: var(--green); }

    /* ─── MODELOS BIOPSICOSOCIALES ─── */
    .bpsc-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      margin-top: 3rem;
    }

    .bpsc-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 16px;
      overflow: hidden;
      transition: border-color .25s, transform .25s;
    }
    .bpsc-card:hover {
      border-color: rgba(34,197,94,.35);
      transform: translateY(-4px);
    }

    .bpsc-img-wrap {
      width: 100%;
      aspect-ratio: 4/3;
      overflow: hidden;
      background: #0d0d10;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .bpsc-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      padding: .5rem;
    }

    .bpsc-info {
      padding: 1rem 1.1rem 1.2rem;
    }

    .bpsc-label {
      font-size: .65rem;
      font-weight: 700;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--green);
      margin-bottom: .3rem;
    }

    .bpsc-name {
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: .9rem;
      line-height: 1.2;
      margin-bottom: .3rem;
    }

    .bpsc-desc {
      font-size: .75rem;
      color: var(--muted);
      line-height: 1.5;
    }

    /* ─── RESPONSIVE ─── */
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .progress-inner { grid-template-columns: 1fr; }
      .progress-stats { justify-content: center; }
      .screens-grid { grid-template-columns: repeat(2, 1fr); }
      .bpsc-grid { grid-template-columns: repeat(2, 1fr); }
      .context-grid { grid-template-columns: 1fr; }
      .timeline::before { left: 70px; }
      .tl-item { grid-template-columns: 70px 1fr; gap: 1rem; }
      .tl-dot { left: 64px; }
    }

    @media (max-width: 480px) {
      .screens-grid { grid-template-columns: 1fr 1fr; }
      .bpsc-grid { grid-template-columns: 1fr; }
    }

    /* ─── SCROLL REVEAL ─── */
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity .65s ease, transform .65s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: none;
    }

/* ─── LIGHTBOX ─── */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0,0,0,.92);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 2rem;
  cursor: zoom-out;
}

#lightbox.active {
  display: flex;
}

#lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 0 60px rgba(0,0,0,.8);
  animation: lbIn .2s ease;
}

@keyframes lbIn {
  from { opacity: 0; transform: scale(.92); }
  to   { opacity: 1; transform: scale(1); }
}

#lightbox-close {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background .2s;
  z-index: 10001;
}
#lightbox-close:hover { background: rgba(255,255,255,.2); }