/* ============================================================
       DESIGN TOKENS
    ============================================================ */
    :root {
      --navy:       #0B1740;
      --navy-mid:   #152255;
      --navy-light: #1E2F6E;
      --steel:      #7A9ABF;
      --steel-light:#B8CDE0;
      --gold:       #C9A84C;
      --gold-light: #E8C97A;
      --white:      #F4F6FA;
      --white-pure: #FFFFFF;
      --grey:       #8A94A6;
      --text-dim:   #C2CCE0;

      --font-display: 'IBM Plex Sans', sans-serif;
      --font-body:    'IBM Plex Sans', sans-serif;
      --font-mono:    'IBM Plex Mono', monospace;

      --section-h: 100vh;
      --nav-h: 72px;
      --max-w: 1200px;
      --transition: 0.35s cubic-bezier(0.4,0,0.2,1);

      /* Readable panels over lightened photo sections */
      --photo-read-panel:       rgba(11, 23, 64, 0.78);
      --photo-read-panel-hover: rgba(11, 23, 64, 0.9);
      --photo-read-panel-border: rgba(255, 255, 255, 0.1);
      --photo-read-inset:       rgba(255, 255, 255, 0.06);
      --photo-read-inset-hover: rgba(201, 168, 76, 0.08);
    }

    /* ============================================================
       RESET & BASE
    ============================================================ */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    html {
      scroll-snap-type: y proximity;
      overflow-y: scroll;
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-body);
      background: var(--navy);
      color: var(--white);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }

    /* ============================================================
       NOISE TEXTURE OVERLAY
    ============================================================ */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 1000;
      opacity: 0.025;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
      background-size: 200px;
    }

    /* ============================================================
       NAVIGATION
    ============================================================ */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 900;
      height: var(--nav-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 3rem;
      transition:
        background var(--transition),
        backdrop-filter var(--transition),
        opacity var(--transition),
        transform var(--transition),
        visibility var(--transition);
    }

    /* Hidden on hero: nav appears only after scrolling past landing */
    #mainNav {
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transform: translateY(-12px);
    }

    #mainNav.nav-visible {
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      transform: translateY(0);
    }

    nav.scrolled {
      background: rgba(11,23,64,0.92);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(201,168,76,0.15);
    }

    .nav-logo {
      display: flex;
      align-items: center;
      gap: 0.9rem;
    }

    .nav-logo img {
      height: 42px;
      width: auto;
      filter: brightness(0) invert(1);
    }

    .nav-logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.1;
    }

    .nav-logo-text .name {
      font-family: var(--font-display);
      font-size: 1.15rem;
      font-weight: 600;
      letter-spacing: 0.04em;
      color: var(--white-pure);
    }

    .nav-logo-text .sub {
      font-size: 0.65rem;
      font-weight: 400;
      letter-spacing: 0.12em;
      color: var(--gold);
      text-transform: uppercase;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2.2rem;
      list-style: none;
    }

    .nav-links a {
      font-size: 0.78rem;
      font-weight: 500;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--steel-light);
      transition: color var(--transition);
    }

    .nav-links a:hover { color: var(--gold); }

    .nav-cta {
      background: var(--gold);
      color: var(--navy) !important;
      padding: 0.55rem 1.4rem;
      border-radius: 2px;
      font-weight: 600 !important;
      letter-spacing: 0.08em !important;
      transition: background var(--transition) !important;
    }

    .nav-cta:hover { background: var(--gold-light) !important; color: var(--navy) !important; }

    /* Hamburger */
    .nav-burger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
      padding: 4px;
    }

    .nav-burger span {
      display: block;
      width: 26px;
      height: 2px;
      background: var(--white);
      transition: var(--transition);
    }

    /* ============================================================
       SECTION BASE
    ============================================================ */
    section {
      position: relative;
      min-height: var(--section-h);
      scroll-snap-align: start;
      display: flex;
      flex-direction: column;
      justify-content: center;
      overflow: hidden;
    }

    .container {
      width: 100%;
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 3rem;
    }

    /* ============================================================
       SECTION 01 — HERO
    ============================================================ */
    #hero {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('../images/hero.png') center/cover no-repeat;
      justify-content: flex-end;
      /* flex-end + larger bottom padding lifts hero content upward within the snap section */
      padding-bottom: clamp(14vh, 18vw, 26vh);
    }

    .hero-content {
      /* Nav is hidden on first paint in hero — avoid reserving full nav height */
      padding-top: 1.25rem;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: end;
    }

    .hero-left {}

    .hero-logo-mark {
      margin-bottom: 1.8rem;
      animation: fadeUp 0.8s 0.2s both;
    }

    .hero-logo-mark img {
      display: block;
      width: var(--hero-logo-w, auto);
      height: auto;
      max-width: 100%;
      filter: brightness(0) invert(1);
    }

    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(3.2rem, 6vw, 5.5rem);
      font-weight: 300;
      line-height: 1.0;
      letter-spacing: -0.01em;
      color: var(--white-pure);
      margin-bottom: 0.5rem;
      white-space: nowrap;
      animation: fadeUp 0.8s 0.35s both;
    }

    .hero-title em {
      font-style: italic;
      color: var(--gold);
    }

    .hero-subtitle {
      font-family: var(--font-display);
      font-size: clamp(1rem, 1.8vw, 1.4rem);
      font-weight: 300;
      color: var(--steel-light);
      letter-spacing: 0.04em;
      margin-bottom: 2.5rem;
      animation: fadeUp 0.8s 0.5s both;
    }

    .hero-tagline {
      font-size: 0.85rem;
      font-weight: 400;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 2.8rem;
      animation: fadeUp 0.8s 0.65s both;
    }

    .hero-actions {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      animation: fadeUp 0.8s 0.8s both;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: var(--gold);
      color: var(--navy);
      font-family: var(--font-body);
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      padding: 0.95rem 2.2rem;
      border-radius: 2px;
      border: none;
      cursor: pointer;
      transition: background var(--transition), transform var(--transition);
    }

    .btn-primary:hover { background: var(--gold-light); transform: translateY(-1px); }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: transparent;
      color: var(--white);
      font-family: var(--font-body);
      font-size: 0.8rem;
      font-weight: 500;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      padding: 0.95rem 2.2rem;
      border-radius: 2px;
      border: 1px solid rgba(244,246,250,0.3);
      cursor: pointer;
      transition: border-color var(--transition), color var(--transition);
    }

    .btn-outline:hover { border-color: var(--gold); color: var(--gold); }

    .hero-right {
      display: flex;
      flex-direction: column;
      gap: 1rem;
      animation: fadeUp 0.8s 0.6s both;
    }

    .hero-stat-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1px;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.08);
    }

    .hero-stat {
      background: rgba(11,23,64,0.6);
      backdrop-filter: blur(8px);
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 0.3rem;
    }

    .hero-stat .val {
      font-family: var(--font-display);
      font-size: 2.2rem;
      font-weight: 600;
      color: var(--gold);
      line-height: 1;
    }

    .hero-stat .lbl {
      font-size: 0.72rem;
      font-weight: 400;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--steel-light);
    }

    .hero-location {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 0.78rem;
      color: var(--grey);
      letter-spacing: 0.06em;
    }

    .scroll-hint {
      position: absolute;
      bottom: 2.5rem;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.65rem;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--grey);
      animation: fadeUp 1s 1.2s both;
    }

    .scroll-line {
      width: 1px;
      height: 40px;
      background: linear-gradient(to bottom, var(--gold), transparent);
      animation: scrollPulse 2s infinite;
    }

    @keyframes scrollPulse {
      0% { transform: scaleY(0); transform-origin: top; }
      50% { transform: scaleY(1); transform-origin: top; }
      51% { transform-origin: bottom; }
      100% { transform: scaleY(0); transform-origin: bottom; }
    }

    /* ============================================================
       SECTION 02 — ABOUT / VISION
    ============================================================ */
    #about {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('../images/about.png') center/cover no-repeat;
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 6rem;
      align-items: center;
      padding: 6rem 0;
    }

    .section-label {
      font-size: 0.68rem;
      font-weight: 500;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 1.2rem;
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }

    .section-label::before {
      content: '';
      width: 30px;
      height: 1px;
      background: var(--gold);
    }

    .section-title {
      font-family: var(--font-display);
      font-size: clamp(2.4rem, 4vw, 3.8rem);
      font-weight: 300;
      line-height: 1.1;
      letter-spacing: -0.01em;
      color: var(--white-pure);
      margin-bottom: 1.8rem;
    }

    .section-title em {
      font-style: italic;
      color: var(--gold);
    }

    .section-body {
      font-size: 0.95rem;
      font-weight: 300;
      color: var(--text-dim);
      line-height: 1.85;
    }

    .section-body p + p { margin-top: 1.1rem; }

    #about .about-left {
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .vision-pillars {
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      margin-top: 2.5rem;
      padding-left: 1rem;
      border-left: 2px solid rgba(201,168,76,0.28);
    }

    .pillar {
      padding: 1.35rem 1.5rem;
      background: var(--photo-read-inset);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 2px;
      position: relative;
      transition: background var(--transition), border-color var(--transition);
      cursor: default;
    }

    .pillar:hover {
      background: var(--photo-read-inset-hover);
      border-color: rgba(201,168,76,0.25);
    }

    .pillar::before {
      content: '';
      position: absolute;
      left: 0; top: 0; bottom: 0;
      width: 2px;
      background: var(--gold);
      transform: scaleY(0);
      transition: transform var(--transition);
      transform-origin: top;
      border-radius: 2px 0 0 2px;
    }

    .pillar:hover::before { transform: scaleY(1); }

    .pillar-num {
      font-family: var(--font-display);
      font-size: 0.7rem;
      letter-spacing: 0.15em;
      color: var(--gold);
      margin-bottom: 0.3rem;
    }

    .pillar-title {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--white);
      margin-bottom: 0.3rem;
    }

    .pillar-desc {
      font-size: 0.8rem;
      color: var(--grey);
      line-height: 1.55;
    }

    .about-right {
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .quote-block {
      border-left: 3px solid var(--gold);
      padding: 1.8rem 2rem;
      background: rgba(201,168,76,0.04);
      margin-top: 2rem;
    }

    .quote-text {
      font-family: var(--font-display);
      font-size: 1.3rem;
      font-weight: 400;
      font-style: italic;
      color: var(--white);
      line-height: 1.5;
    }

    .learn-more-link {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.78rem;
      font-weight: 500;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--gold);
      margin-top: 2rem;
      transition: gap var(--transition);
    }

    .learn-more-link:hover { gap: 0.9rem; }
    .learn-more-link svg { transition: transform var(--transition); }
    .learn-more-link:hover svg { transform: translateX(4px); }

    /* ============================================================
       SECTION 03 — ACADEMIC CONTENT
    ============================================================ */
    #academic {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('../images/programme.png') center/cover no-repeat;
    }

    .academic-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 5rem;
      align-items: start;
      padding: 6rem 0;
    }

    #academic .academic-grid > .reveal {
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .track-list {
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      margin-top: 2.5rem;
    }

    .track-item {
      display: flex;
      align-items: center;
      gap: 1rem;
      padding: 1rem 1.2rem;
      border: 1px solid rgba(255,255,255,0.08);
      background: var(--photo-read-inset);
      transition: border-color var(--transition), background var(--transition);
      cursor: default;
      border-radius: 2px;
    }

    .track-item:hover {
      border-color: rgba(201,168,76,0.3);
      background: var(--photo-read-inset-hover);
    }

    .track-icon {
      width: 36px; height: 36px;
      background: rgba(201,168,76,0.1);
      border-radius: 2px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .track-name {
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--white);
    }

    .schedule-overview {
      margin-top: 2.5rem;
    }

    .schedule-day {
      margin-bottom: 1.5rem;
    }

    .schedule-day-header {
      font-size: 0.7rem;
      font-weight: 600;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 0.8rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid rgba(201,168,76,0.2);
    }

    .schedule-slot {
      display: grid;
      grid-template-columns: 80px 1fr;
      gap: 1rem;
      padding: 0.6rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.04);
    }

    .slot-time {
      font-size: 0.72rem;
      color: var(--steel);
      font-weight: 400;
      letter-spacing: 0.04em;
      padding-top: 0.1rem;
    }

    .slot-content {}
    .slot-title {
      font-size: 0.82rem;
      font-weight: 500;
      color: var(--white);
    }
    .slot-desc {
      font-size: 0.72rem;
      color: var(--grey);
      margin-top: 0.15rem;
    }

    .slot-type {
      display: inline-block;
      font-size: 0.6rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      padding: 0.2rem 0.5rem;
      border-radius: 2px;
      margin-top: 0.3rem;
    }

    .slot-type.keynote { background: rgba(201,168,76,0.15); color: var(--gold); }
    .slot-type.workshop { background: rgba(122,154,191,0.15); color: var(--steel); }
    .slot-type.recreation { background: rgba(46,160,67,0.15); color: #6BCB77; }
    .slot-type.social { background: rgba(180,100,200,0.15); color: #CC88EE; }

    /* ============================================================
       SECTION 04 — FACULTY / SPEAKERS
    ============================================================ */
    #faculty {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('../images/faculty.png') center/cover no-repeat;
      min-height: 100vh;
    }

    .faculty-header {
      text-align: center;
      max-width: 640px;
      margin: 0 auto 4rem;
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .faculty-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      padding-bottom: 2rem;
    }

    .faculty-card {
      position: relative;
      aspect-ratio: 3/4;
      overflow: hidden;
      background: var(--navy-mid);
      border: 1px solid rgba(255,255,255,0.07);
      cursor: default;
      transition: border-color var(--transition);
    }

    .faculty-card:hover { border-color: rgba(201,168,76,0.4); }

    .faculty-card-bg {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, var(--navy-light) 0%, var(--navy-mid) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .faculty-avatar {
      width: 70px; height: 70px;
      border-radius: 50%;
      background: rgba(201,168,76,0.12);
      border: 2px solid rgba(201,168,76,0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 1.8rem;
      color: var(--gold);
      opacity: 0.5;
    }

    .faculty-card-overlay {
      position: absolute;
      bottom: 0; left: 0; right: 0;
      background: linear-gradient(transparent, rgba(11,23,64,0.95));
      padding: 2rem 1.2rem 1.2rem;
    }

    .faculty-tba {
      font-size: 0.68rem;
      font-weight: 500;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 0.25rem;
      opacity: 0.7;
    }

    .faculty-role {
      font-size: 0.72rem;
      color: var(--grey);
    }

    .faculty-specialty-tag {
      display: inline-block;
      margin-top: 0.5rem;
      font-size: 0.6rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      padding: 0.2rem 0.5rem;
      border: 1px solid rgba(201,168,76,0.25);
      color: var(--gold);
      opacity: 0.7;
    }

    .faculty-note {
      text-align: center;
      margin-top: 2.5rem;
      margin-left: auto;
      margin-right: auto;
      max-width: 520px;
      padding: 1.2rem 1.5rem;
      font-size: 0.82rem;
      color: var(--grey);
      font-style: italic;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    /* ============================================================
       SECTION 05 — ANDORRA / SETTING
    ============================================================ */
    #setting {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('https://images.unsplash.com/photo-1605540436563-5bca919ae766?auto=format&fit=crop&w=1800&q=80') center/cover no-repeat;
      min-height: 100vh;
    }

    .setting-content {
      padding: 6rem 0;
    }

    .setting-intro {
      max-width: 700px;
      margin-bottom: 4rem;
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .setting-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .setting-card {
      background: rgba(11, 23, 64, 0.72);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--photo-read-panel-border);
      padding: 2rem;
      position: relative;
      overflow: hidden;
      transition: border-color var(--transition), background var(--transition);
    }

    .setting-card:hover { border-color: rgba(201,168,76,0.35); }

    .setting-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--gold), transparent);
      opacity: 0;
      transition: opacity var(--transition);
    }

    .setting-card:hover::before { opacity: 1; }

    .setting-card-icon {
      font-size: 1.8rem;
      margin-bottom: 1rem;
    }

    .setting-card-title {
      font-family: var(--font-display);
      font-size: 1.3rem;
      font-weight: 500;
      color: var(--white-pure);
      margin-bottom: 0.8rem;
    }

    .setting-card-desc {
      font-size: 0.83rem;
      color: var(--text-dim);
      line-height: 1.75;
    }

    /* ============================================================
       SECTION 06 — EXTRACURRICULAR / SOCIAL
    ============================================================ */
    #social {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('../images/social.png') center/cover no-repeat;
    }

    .social-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 6rem;
      align-items: center;
      padding: 6rem 0;
    }

    #social .social-grid > .reveal {
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .social-activities {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      margin-top: 2.5rem;
    }

    .activity-card {
      padding: 1.5rem;
      background: var(--photo-read-inset);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 2px;
      transition: background var(--transition), border-color var(--transition);
    }

    .activity-card:hover {
      background: var(--photo-read-inset-hover);
      border-color: rgba(201,168,76,0.25);
    }

    .activity-emoji { font-size: 1.6rem; margin-bottom: 0.7rem; }
    .activity-name {
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--white);
      margin-bottom: 0.3rem;
    }
    .activity-desc { font-size: 0.76rem; color: var(--grey); line-height: 1.6; }

    .social-right {}

    .event-timeline {
      display: flex;
      flex-direction: column;
      gap: 0;
      margin-top: 1.5rem;
      position: relative;
    }

    .event-timeline::before {
      content: '';
      position: absolute;
      left: 11px; top: 0; bottom: 0;
      width: 1px;
      background: linear-gradient(to bottom, var(--gold), transparent);
    }

    .event-item {
      display: grid;
      grid-template-columns: 24px 1fr;
      gap: 1rem;
      padding: 0 0 1.5rem;
      align-items: start;
    }

    .event-dot {
      width: 24px; height: 24px;
      border-radius: 50%;
      background: var(--navy);
      border: 2px solid var(--gold);
      margin-top: 0.2rem;
      flex-shrink: 0;
    }

    .event-content {}
    .event-day {
      font-size: 0.65rem;
      font-weight: 600;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 0.2rem;
    }
    .event-name { font-size: 0.88rem; font-weight: 500; color: var(--white); }
    .event-desc { font-size: 0.76rem; color: var(--grey); margin-top: 0.2rem; }

    /* ============================================================
       SECTION 07 — WORKSHOPS
    ============================================================ */
    #workshops {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('../images/workshops.png') center/cover no-repeat;
    }

    .workshops-content {
      padding: 6rem 0;
    }

    .workshops-header {
      max-width: 560px;
      margin-bottom: 4rem;
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .workshop-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .workshop-card {
      background: rgba(11, 23, 64, 0.72);
      border: 1px solid var(--photo-read-panel-border);
      padding: 2.5rem 2rem;
      position: relative;
      overflow: hidden;
      transition: border-color var(--transition), transform var(--transition), background var(--transition);
    }

    .workshop-card:hover {
      border-color: rgba(201,168,76,0.4);
      background: var(--photo-read-panel-hover);
      transform: translateY(-3px);
    }

    #workshops .workshops-content > .section-body {
      padding: 1.25rem 1.75rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .workshop-num {
      position: absolute;
      top: 1.5rem; right: 1.5rem;
      font-family: var(--font-display);
      font-size: 3.5rem;
      font-weight: 700;
      color: rgba(201,168,76,0.07);
      line-height: 1;
    }

    .workshop-icon {
      font-size: 1.8rem;
      margin-bottom: 1.2rem;
    }

    .workshop-title {
      font-family: var(--font-display);
      font-size: 1.3rem;
      font-weight: 500;
      color: var(--white-pure);
      margin-bottom: 0.8rem;
      line-height: 1.2;
    }

    .workshop-desc {
      font-size: 0.82rem;
      color: var(--text-dim);
      line-height: 1.75;
      margin-bottom: 1.5rem;
    }

    .workshop-tag {
      display: inline-block;
      font-size: 0.65rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      padding: 0.3rem 0.8rem;
      border: 1px solid rgba(201,168,76,0.3);
      color: var(--gold);
      border-radius: 2px;
    }

    /* ============================================================
       SECTION 08 — REGISTRATION
    ============================================================ */
    #registration {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('../images/registration.png') center/cover no-repeat;
    }

    .reg-content {
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 6rem;
      padding: 6rem 0;
      align-items: start;
    }

    .reg-left {
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .reg-form-wrap {
      background: rgba(11, 23, 64, 0.82);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      padding: 2.5rem;
      border-radius: 3px;
    }

    .reg-form-title {
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 500;
      color: var(--white-pure);
      margin-bottom: 0.5rem;
    }

    .reg-form-sub {
      font-size: 0.8rem;
      color: var(--grey);
      margin-bottom: 2rem;
      padding-bottom: 1.5rem;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
      margin-bottom: 1.1rem;
    }

    .form-group.full { grid-column: 1 / -1; }

    label {
      font-size: 0.7rem;
      font-weight: 500;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--steel-light);
    }

    label .optional {
      font-weight: 400;
      color: var(--grey);
      text-transform: none;
      letter-spacing: 0;
      font-size: 0.65rem;
    }

    input[type="text"],
    input[type="email"],
    input[type="tel"],
    input[type="url"],
    select {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.1);
      color: var(--white);
      font-family: var(--font-body);
      font-size: 0.85rem;
      padding: 0.75rem 1rem;
      border-radius: 2px;
      width: 100%;
      transition: border-color var(--transition), background var(--transition);
      outline: none;
      appearance: none;
    }

    input::placeholder { color: rgba(138,148,166,0.6); }

    input:focus, select:focus {
      border-color: rgba(201,168,76,0.5);
      background: rgba(255,255,255,0.07);
    }

    select option { background: var(--navy-mid); color: var(--white); }

    .select-wrap {
      position: relative;
    }

    .select-wrap::after {
      content: '▾';
      position: absolute;
      right: 1rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--grey);
      pointer-events: none;
      font-size: 0.8rem;
    }

    .phone-input-row {
      display: grid;
      grid-template-columns: 200px 1fr;
      gap: 0.6rem;
      align-items: center;
    }

    .phone-code-wrap select {
      padding-right: 2rem;
    }

    .checkbox-section {
      margin: 1.5rem 0;
    }

    .checkbox-section-title {
      font-size: 0.7rem;
      font-weight: 500;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--steel-light);
      margin-bottom: 0.8rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .checkbox-group {
      display: flex;
      flex-direction: column;
      gap: 0.55rem;
    }

    .checkbox-item {
      display: flex;
      align-items: flex-start;
      gap: 0.8rem;
      cursor: pointer;
    }

    .checkbox-item input[type="checkbox"] {
      appearance: none;
      -webkit-appearance: none;
      width: 16px; height: 16px;
      border: 1px solid rgba(255,255,255,0.2);
      background: rgba(255,255,255,0.05);
      border-radius: 2px;
      flex-shrink: 0;
      margin-top: 0.15rem;
      cursor: pointer;
      position: relative;
      transition: border-color var(--transition), background var(--transition);
    }

    .checkbox-item input[type="checkbox"]:checked {
      background: var(--gold);
      border-color: var(--gold);
    }

    .checkbox-item input[type="checkbox"]:checked::after {
      content: '✓';
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      font-size: 0.65rem;
      color: var(--navy);
      font-weight: 700;
    }

    .checkbox-label {
      font-size: 0.82rem;
      color: var(--text-dim);
      line-height: 1.4;
    }

    .checkbox-label strong { color: var(--white); font-weight: 500; }

    .consent-block {
      margin: 1.5rem 0;
      padding: 1.2rem;
      background: rgba(201,168,76,0.04);
      border: 1px solid rgba(201,168,76,0.15);
      border-radius: 2px;
    }

    .consent-text {
      font-size: 0.75rem;
      color: var(--grey);
      line-height: 1.6;
    }

    .btn-submit {
      width: 100%;
      padding: 1.1rem;
      background: var(--gold);
      color: var(--navy);
      font-family: var(--font-body);
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      border: none;
      border-radius: 2px;
      cursor: pointer;
      transition: background var(--transition), transform var(--transition);
      margin-top: 0.5rem;
    }

    .btn-submit:hover { background: var(--gold-light); transform: translateY(-1px); }
    .btn-submit:active { transform: translateY(0); }

    .form-success {
      display: none;
      text-align: center;
      padding: 3rem 2rem;
    }

    .form-success .success-icon {
      font-size: 3rem;
      margin-bottom: 1rem;
    }

    .form-success h3 {
      font-family: var(--font-display);
      font-size: 1.8rem;
      font-weight: 500;
      color: var(--white-pure);
      margin-bottom: 0.5rem;
    }

    .form-success p {
      font-size: 0.85rem;
      color: var(--grey);
    }

    .pricing-note {
      margin-top: 3rem;
    }

    .pricing-note-title {
      font-size: 0.7rem;
      font-weight: 600;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 1rem;
    }

    .pricing-tier {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.8rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    .tier-name { font-size: 0.85rem; color: var(--text-dim); }
    .tier-price {
      font-family: var(--font-display);
      font-size: 1.1rem;
      font-weight: 500;
      color: var(--gold);
    }

    .tier-price.tba { font-size: 0.8rem; color: var(--grey); font-family: var(--font-body); }

    /* ============================================================
       SECTION 09 — SPONSORS
    ============================================================ */
    #sponsors {
      background:
        linear-gradient(180deg, rgba(11,23,64,0.92) 0%, rgba(11,23,64,0.5) 40%, rgba(11,23,64,0.92) 100%),
        url('../images/sponsors.png') center/cover no-repeat;
    }

    .sponsors-content {
      padding: 6rem 0;
      display: grid;
      grid-template-columns: 1fr 1.5fr;
      gap: 6rem;
      align-items: start;
    }

    #sponsors .sponsors-content > .reveal {
      padding: 2rem 2.25rem;
      background: var(--photo-read-panel);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--photo-read-panel-border);
      border-radius: 3px;
    }

    .sponsor-tiers {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
      margin-top: 2rem;
    }

    .sponsor-tier {
      padding: 1.8rem;
      border: 1px solid rgba(255,255,255,0.1);
      background: var(--photo-read-inset);
      border-radius: 2px;
      position: relative;
      overflow: hidden;
      transition: border-color var(--transition), background var(--transition);
    }

    .sponsor-tier:hover { border-color: rgba(201,168,76,0.3); }

    .sponsor-tier.featured {
      border-color: rgba(201,168,76,0.35);
      background: rgba(201,168,76,0.08);
    }

    .tier-badge {
      position: absolute;
      top: 1.2rem; right: 1.2rem;
      font-size: 0.6rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      padding: 0.25rem 0.6rem;
      border-radius: 2px;
    }

    .tier-badge.gold-badge { background: rgba(201,168,76,0.2); color: var(--gold); }
    .tier-badge.silver-badge { background: rgba(180,185,200,0.2); color: #C8CDD8; }
    .tier-badge.bronze-badge { background: rgba(150,100,60,0.2); color: #CC9966; }

    .tier-name-big {
      font-family: var(--font-display);
      font-size: 1.4rem;
      font-weight: 500;
      color: var(--white-pure);
      margin-bottom: 0.8rem;
    }

    .tier-benefits {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
      margin-bottom: 1.2rem;
    }

    .tier-benefits li {
      font-size: 0.8rem;
      color: var(--text-dim);
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }

    .tier-benefits li::before {
      content: '—';
      color: var(--gold);
      opacity: 0.7;
      flex-shrink: 0;
    }

    .sponsors-cta-block {
      margin-top: 2rem;
      padding: 2rem;
      background: rgba(201,168,76,0.06);
      border: 1px solid rgba(201,168,76,0.2);
      text-align: center;
    }

    .sponsors-cta-block p {
      font-size: 0.85rem;
      color: var(--text-dim);
      margin-bottom: 1.2rem;
    }

    /* ============================================================
       FOOTER
    ============================================================ */
    footer {
      background: rgba(8,15,45,1);
      border-top: 1px solid rgba(201,168,76,0.1);
      padding: 3rem;
      scroll-snap-align: none;
    }

    .footer-inner {
      max-width: var(--max-w);
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 3rem;
      padding-bottom: 2.5rem;
      border-bottom: 1px solid rgba(255,255,255,0.04);
    }

    .footer-brand {}
    .footer-logo { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 1rem; }
    .footer-logo img { height: 32px; filter: brightness(0) invert(1); opacity: 0.7; }
    .footer-logo-name {
      font-family: var(--font-display);
      font-size: 1rem;
      font-weight: 500;
      color: var(--white);
    }
    .footer-tagline {
      font-size: 0.76rem;
      color: var(--grey);
      line-height: 1.65;
      max-width: 260px;
    }

    .footer-col-title {
      font-size: 0.65rem;
      font-weight: 600;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 1.2rem;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.6rem;
    }

    .footer-links a {
      font-size: 0.8rem;
      color: var(--grey);
      transition: color var(--transition);
    }

    .footer-links a:hover { color: var(--steel-light); }

    .footer-bottom {
      max-width: var(--max-w);
      margin: 2rem auto 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.72rem;
      color: rgba(138,148,166,0.5);
    }

    /* ============================================================
       ANIMATIONS
    ============================================================ */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    .reveal {
      opacity: 0;
      transform: translateY(32px);
      transition: opacity 1.1s ease, transform 1.1s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ============================================================
       TYPOGRAPHY VARIANT C — IBM PLEX (PRODUCTION)
    ============================================================ */
    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(2.8rem, 5vw, 4.8rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 0.98;
      font-style: normal;
      text-transform: uppercase;
    }

    .section-title {
      font-family: var(--font-display);
      font-size: clamp(1.9rem, 3vw, 2.8rem);
      font-weight: 600;
      letter-spacing: -0.015em;
      line-height: 1.1;
      text-transform: none;
    }

    .nav-logo-text .name {
      font-family: var(--font-display);
      font-size: 0.95rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .hero-subtitle {
      font-family: var(--font-body);
      font-size: clamp(1.05rem, 1.85vw, 1.35rem);
      font-weight: 700;
      letter-spacing: 0.03em;
      font-style: normal;
      text-transform: uppercase;
      display: block;
      width: min(100%, var(--hero-subtitle-w, 100%));
      white-space: nowrap;
    }

    .hero-tagline {
      font-family: var(--font-mono);
      font-size: 0.9rem;
      font-weight: 600;
      letter-spacing: 0.1em;
    }

    .hero-tagline-date {
      display: block;
      margin-top: 0.35rem;
      white-space: nowrap;
    }

    .slot-time {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      font-weight: 400;
      letter-spacing: 0.06em;
    }

    .hero-stat .val {
      font-family: var(--font-display);
      font-size: 2.2rem;
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    .quote-text {
      font-family: var(--font-display);
      font-size: 1.1rem;
      font-weight: 400;
      font-style: normal;
      letter-spacing: 0.01em;
      line-height: 1.6;
    }

    .section-label {
      font-family: var(--font-mono);
      font-size: 0.65rem;
      font-weight: 500;
      letter-spacing: 0.2em;
    }

    .workshop-title,
    .setting-card-title {
      font-family: var(--font-display);
      font-size: 1.1rem;
      font-weight: 600;
      letter-spacing: -0.01em;
    }

    .reg-form-title {
      font-family: var(--font-display);
      font-size: 1.3rem;
      font-weight: 600;
      letter-spacing: -0.01em;
    }

    .slot-type,
    .workshop-tag,
    .faculty-specialty-tag,
    .faculty-tba {
      font-family: var(--font-mono);
      font-size: 0.6rem;
      letter-spacing: 0.08em;
    }

    .tier-name-big {
      font-family: var(--font-display);
      font-size: 1.25rem;
      font-weight: 600;
      letter-spacing: -0.01em;
    }

    /* ECG Line decoration */
    .ecg-line {
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, transparent 0%, var(--gold) 20%, var(--gold) 80%, transparent 100%);
      opacity: 0.2;
      margin: 1.5rem 0;
    }

    /* ============================================================
       RESPONSIVE
    ============================================================ */
    @media (max-width: 1024px) {
      .faculty-grid { grid-template-columns: repeat(3, 1fr); }
      .hero-content { grid-template-columns: 1fr; }
      .hero-right { display: none; }
    }

    @media (max-width: 768px) {
      nav { padding: 0 1.5rem; }
      .nav-links { display: none; }
      .nav-burger { display: flex; }
      .container { padding: 0 1.5rem; }
      section { scroll-snap-align: none; }
      html { scroll-snap-type: none; }

      .about-grid,
      .academic-grid,
      .social-grid,
      .reg-content,
      .sponsors-content { grid-template-columns: 1fr; gap: 3rem; }

      .faculty-grid { grid-template-columns: repeat(2, 1fr); }
      .setting-cards,
      .workshop-cards { grid-template-columns: 1fr; }
      .social-activities { grid-template-columns: 1fr; }
      .form-row { grid-template-columns: 1fr; }
      .phone-input-row { grid-template-columns: 1fr; }
      .footer-inner { grid-template-columns: 1fr 1fr; }

      .hero-title { font-size: clamp(2.2rem, 9vw, 3.6rem); }
    }

    /* Mobile menu overlay */
    .mobile-menu {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(11,23,64,0.98);
      z-index: 800;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 2rem;
    }

    .mobile-menu.open { display: flex; }
    .mobile-menu a {
      font-size: 1.5rem;
      font-family: var(--font-display);
      color: var(--white);
      letter-spacing: 0.04em;
      transition: color var(--transition);
    }
    .mobile-menu a:hover { color: var(--gold); }
    .mobile-menu-close {
      position: absolute;
      top: 1.5rem; right: 1.5rem;
      background: none;
      border: none;
      color: var(--grey);
      font-size: 1.5rem;
      cursor: pointer;
    }