:root {
    --burgundy: #592335;
    --burgundy-deep: #3e1822;
    --burgundy-soft: #7a3550;
    --gold: #b3a28e;
    --gold-light: #d6c8b6;
    --gold-deep: #8a7a68;
    --ink: #1a1014;
    --ink-soft: #4a3a40;
    --paper: #faf6f0;
    --paper-warm: #f3ebde;
    --line: rgba(89, 35, 53, 0.18);
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: 'Inter', 'Noto Sans TC', system-ui, sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

  .serif { font-family: 'Cormorant Garamond', 'Noto Serif TC', Georgia, serif; }
  .zh { font-family: 'Noto Sans TC', 'Inter', system-ui, sans-serif; }

  img { max-width: 100%; display: block; }

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

  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 3rem);
  }

  /* ---------- Navigation ---------- */
  .nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250, 246, 240, 0.85);
    backdrop-filter: saturate(140%) blur(10px);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
  }
  .brand-cis img { height: 42px; width: auto; }
  .brand-text { display: flex; flex-direction: column; line-height: 1.1; }
  .brand-text .name {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--burgundy);
    letter-spacing: 0.02em;
  }
  .brand-text .sub {
    font-size: 0.7rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--gold-deep);
  }
  .nav-links {
    display: flex;
    gap: 2.2rem;
    list-style: none;
  }
  .nav-links a {
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-soft);
    position: relative;
    padding: 0.25rem 0;
    transition: color 0.2s ease;
  }
  .nav-links a::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -4px;
    height: 1px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
  }
  .nav-links a:hover { color: var(--burgundy); }
  .nav-links a:hover::after { transform: scaleX(1); }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    background: var(--burgundy);
    color: var(--paper);
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    border: 1px solid var(--burgundy);
    transition: all 0.25s ease;
  }
  .nav-cta:hover { background: var(--burgundy-deep); border-color: var(--burgundy-deep); }

  @media (max-width: 880px) {
    .nav-links { display: none; }
  }

  /* ---------- Hero ---------- */
  .hero {
    position: relative;
    background: var(--burgundy);
    color: var(--paper);
    overflow: hidden;
  }
  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      radial-gradient(ellipse at 80% 20%, rgba(179, 162, 142, 0.18), transparent 50%),
      radial-gradient(ellipse at 10% 90%, rgba(0, 0, 0, 0.25), transparent 60%);
    pointer-events: none;
  }
  .hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
    padding: clamp(2rem, 5vw, 4rem) 0 clamp(2rem, 5vw, 3.5rem);
  }
  .hero-icon {
    display: flex;
    justify-content: center;
  }
  .hero-icon img {
    width: 100%;
    max-width: 200px;
    filter: drop-shadow(0 18px 40px rgba(0,0,0,0.35));
    animation: float 6s ease-in-out infinite;
  }
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
  }
  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.7rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1rem;
  }
  .eyebrow::before {
    content: '';
    width: 36px; height: 1px;
    background: var(--gold);
  }
  h1.hero-title {
    font-family: 'Cormorant Garamond', 'Noto Serif TC', serif;
    font-weight: 500;
    font-size: clamp(1.9rem, 4.2vw, 3.2rem);
    line-height: 1.08;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
  }
  h1.hero-title .zh {
    display: block;
    font-family: 'Noto Serif TC', serif;
    font-size: 0.62em;
    font-weight: 500;
    color: var(--gold-light);
    margin-top: 0.6rem;
    letter-spacing: 0.02em;
  }
  .hero-lead {
    font-size: clamp(0.95rem, 1.1vw, 1.05rem);
    max-width: 620px;
    color: rgba(250, 246, 240, 0.85);
    margin-bottom: 1.6rem;
  }
  .hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.95rem 1.7rem;
    font-size: 0.78rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.25s ease;
  }
  .btn-primary { background: var(--gold); color: var(--burgundy); border-color: var(--gold); }
  .btn-primary:hover { background: var(--gold-light); border-color: var(--gold-light); }
  .btn-ghost { background: transparent; color: var(--paper); border-color: rgba(250, 246, 240, 0.4); }
  .btn-ghost:hover { background: rgba(250, 246, 240, 0.1); border-color: var(--gold); }

  .hero-meta {
    display: flex;
    gap: 2.4rem;
    margin-top: 1.8rem;
    padding-top: 1.4rem;
    border-top: 1px solid rgba(179, 162, 142, 0.3);
    flex-wrap: wrap;
  }
  .meta-item { display: flex; flex-direction: column; }
  .meta-item .k { font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); }
  .meta-item .v { font-family: 'Cormorant Garamond', serif; font-size: 1.5rem; color: var(--paper); }
  .meta-item-tracks .v {
    font-size: 1.1rem;
    line-height: 1.35;
    font-family: 'Cormorant Garamond', serif;
  }
  .meta-item-tracks .v br + * { display: block; margin-top: 0.2rem; }

  @media (max-width: 720px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-icon { order: -1; }
    .hero-icon img { max-width: 140px; }
    .eyebrow::before { display: none; }
    .hero-meta { justify-content: center; }
  }

  /* ---------- Section base ---------- */
  section { padding: clamp(4rem, 8vw, 7rem) 0; }
  .section-head {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 3rem;
    margin-bottom: 2.4rem;
    align-items: end;
  }
  .section-head h2 {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 500;
    font-size: clamp(2rem, 3.6vw, 3.2rem);
    line-height: 1.05;
    color: var(--burgundy);
    letter-spacing: -0.01em;
  }
  .section-head h2 .zh {
    display: block;
    font-family: 'Noto Serif TC', serif;
    font-size: 0.55em;
    color: var(--gold-deep);
    margin-top: 0.4rem;
  }
  .section-head p { color: var(--ink-soft); font-size: 1.02rem; max-width: 60ch; }
  @media (max-width: 720px) {
    .section-head { grid-template-columns: 1fr; }
  }

  /* ---------- Showcase (carousel) ---------- */
  .showcase {
    background: var(--paper);
    padding: clamp(2.5rem, 5vw, 4.5rem) 0 clamp(4rem, 8vw, 6rem);
    overflow: hidden;
  }
  .carousel {
    position: relative;
    overflow: hidden;
  }
  .carousel-arrow {
    position: absolute;
    top: 110px; /* aligns over the upper-middle of the product visual */
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--paper);
    color: var(--burgundy);
    border: 1px solid var(--line);
    box-shadow: 0 8px 22px -10px rgba(89, 35, 53, 0.4);
    display: grid;
    place-items: center;
    cursor: pointer;
    z-index: 10;
    transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
    font-family: inherit;
  }
  .carousel-arrow svg { width: 18px; height: 18px; display: block; }
  .carousel-arrow-prev { left: 8px; }
  .carousel-arrow-next { right: 8px; }
  .carousel-arrow:hover {
    background: var(--burgundy);
    color: var(--paper);
    border-color: var(--burgundy);
    transform: scale(1.06);
  }
  .carousel-arrow:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
  }
  @media (max-width: 760px) {
    .carousel-arrow { top: 90px; width: 38px; height: 38px; }
    .carousel-arrow svg { width: 16px; height: 16px; }
  }
  .carousel-track {
    display: flex;
    width: max-content;
    transition: transform 0.75s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
  }
  .carousel:hover .carousel-track { /* no pause for step mode — bullets take over */ }

  .carousel-bullets {
    display: flex;
    justify-content: center;
    gap: 0.55rem;
    margin-top: 2.4rem;
  }
  .bullet {
    width: 8px; height: 8px;
    border-radius: 999px;
    background: var(--line);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: width 0.35s ease, background 0.35s ease;
  }
  .bullet:hover { background: var(--gold-deep); }
  .bullet.active {
    background: var(--burgundy);
    width: 26px;
  }
  .product-card {
    flex: 0 0 auto;
    width: min(560px, 70%);
    margin-right: 1.5rem;
    display: flex;
    flex-direction: column;
    background: white;
    border: 1px solid var(--line);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.4s ease, opacity 0.4s ease;
    color: var(--ink);
    text-decoration: none;
  }
  .product-card.is-side {
    filter: blur(4px);
    opacity: 0.65;
    pointer-events: none;
  }
  .product-card.is-active:hover {
    transform: translateY(-5px);
    box-shadow: 0 26px 50px -22px rgba(89, 35, 53, 0.4);
  }
  .product-visual {
    position: relative;
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }
  .product-visual.simlife {
    background:
      radial-gradient(ellipse at 70% 30%, rgba(94, 234, 212, 0.16), transparent 55%),
      radial-gradient(ellipse at 25% 80%, rgba(37, 149, 83, 0.18), transparent 55%),
      linear-gradient(135deg, #0a1628 0%, #1a2942 100%);
    color: #f0fdf4;
  }
  .product-visual.ecoscan {
    background:
      radial-gradient(ellipse at 30% 30%, rgba(52, 168, 71, 0.12), transparent 55%),
      radial-gradient(ellipse at 75% 80%, rgba(17, 62, 131, 0.10), transparent 55%),
      linear-gradient(135deg, #fafffe 0%, #f0fdf4 100%);
    color: #113e83;
  }
  .product-visual.ecoscan .logo { max-width: 85%; }
  .product-visual.blindcab {
    background:
      radial-gradient(ellipse at 75% 25%, rgba(244, 104, 88, 0.35), transparent 55%),
      radial-gradient(ellipse at 25% 85%, rgba(45, 170, 170, 0.30), transparent 55%),
      linear-gradient(135deg, #0a0a14 0%, #14101a 100%);
    color: #f0fdf4;
  }
  .product-visual.pharmedic {
    background:
      radial-gradient(ellipse at 75% 25%, rgba(20, 184, 166, 0.22), transparent 55%),
      radial-gradient(ellipse at 25% 85%, rgba(13, 148, 136, 0.18), transparent 55%),
      linear-gradient(135deg, #042f2e 0%, #0a4444 100%);
    color: #ccfbf1;
  }
  .product-visual.pharmedic .logo { max-width: 85%; }
  .product-visual.planeats {
    background:
      radial-gradient(ellipse at 22% 70%, rgba(123, 160, 84, 0.85), transparent 65%),
      radial-gradient(ellipse at 80% 18%, rgba(123, 160, 84, 0.55), transparent 60%),
      radial-gradient(ellipse at 70% 85%, rgba(170, 127, 82, 0.35), transparent 60%),
      linear-gradient(135deg, #14240e 0%, #1f2a14 55%, #2a3a18 100%);
    color: #f5ebd9;
  }
  .product-visual.planeats .logo { max-width: 60%; }
  .product-visual.reneweearth {
    background:
      radial-gradient(ellipse at 25% 30%, rgba(132, 204, 22, 0.22), transparent 55%),
      radial-gradient(ellipse at 75% 80%, rgba(101, 163, 13, 0.18), transparent 55%),
      linear-gradient(135deg, #0f2f0f 0%, #1a4a1a 100%);
    color: #d9f99d;
  }
  .product-visual.replate {
    background:
      radial-gradient(ellipse at 70% 30%, rgba(129, 183, 34, 0.38), transparent 55%),
      radial-gradient(ellipse at 30% 80%, rgba(129, 183, 34, 0.22), transparent 55%),
      linear-gradient(135deg, #0f2f0a 0%, #1a4a12 100%);
    color: #f0fdf4;
  }
  .product-visual.replate .logo { max-width: 85%; }
  .product-visual .logo {
    max-width: 60%;
    max-height: 75%;
    object-fit: contain;
    z-index: 1;
    position: relative;
    filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.35));
  }
  .product-visual .name {
    font-family: 'Cormorant Garamond', 'Noto Serif TC', serif;
    font-size: clamp(2.4rem, 3.8vw, 3.2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    z-index: 1;
    line-height: 1;
  }
  .product-visual .deco {
    position: absolute;
    width: 220px; height: 220px;
    border-radius: 50%;
    border: 1px solid currentColor;
    opacity: 0.12;
    top: -90px; right: -70px;
  }
  .product-visual .deco.b {
    top: auto; right: auto;
    bottom: -100px; left: -60px;
    width: 160px; height: 160px;
  }
  .product-visual .badge {
    position: absolute;
    top: 1rem; left: 1rem;
    font-size: 0.62rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: currentColor;
    opacity: 0.7;
    z-index: 2;
  }
  .product-visual .award {
    position: absolute;
    top: 0.9rem;
    right: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.75rem 0.45rem 0.55rem;
    background: linear-gradient(135deg, #d6c8b6 0%, #b3a28e 55%, #8a7a68 100%);
    color: var(--burgundy-deep);
    border: 1px solid var(--gold-deep);
    border-radius: 999px;
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
    z-index: 3;
    box-shadow: 0 8px 20px -10px rgba(89, 35, 53, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  }
  .product-visual .award svg { width: 14px; height: 14px; flex-shrink: 0; }
  .product-visual .award .ribbon-text { line-height: 1; }
  .product-visual .award em {
    font-style: normal;
    color: var(--burgundy-deep);
    font-weight: 600;
    margin-left: 0.15rem;
    opacity: 0.85;
  }
  .product-visual .launch {
    position: absolute;
    bottom: 1rem; right: 1rem;
    width: 38px; height: 38px;
    border: 1px solid currentColor;
    border-radius: 50%;
    display: grid; place-items: center;
    opacity: 0.6;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 2;
    font-size: 1.1rem;
  }
  .product-card:hover .product-visual .launch {
    opacity: 1;
    transform: translate(3px, -3px);
  }
  .product-body {
    padding: 1.8rem 1.6rem 1.6rem;
  }
  .product-tags {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 0.8rem;
    flex-wrap: wrap;
  }
  .product-tags .tag {
    font-size: 0.62rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--gold-deep);
    background: var(--paper-warm);
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    font-weight: 500;
  }
  .product-card h3 {
    font-family: 'Cormorant Garamond', 'Noto Serif TC', serif;
    font-size: 1.6rem;
    color: var(--burgundy);
    margin-bottom: 0.4rem;
    font-weight: 600;
    line-height: 1.1;
  }
  .product-card .product-zh {
    font-family: 'Noto Sans TC', sans-serif;
    font-size: 0.85rem;
    color: var(--gold-deep);
    margin-bottom: 0.6rem;
  }
  .product-card p {
    color: var(--ink-soft);
    font-size: 0.92rem;
    margin-bottom: 1.1rem;
    line-height: 1.55;
  }
  .product-link {
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--burgundy);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
  }
  .product-link::after {
    content: '→';
    transition: transform 0.3s ease;
    display: inline-block;
  }
  .product-card:hover .product-link::after {
    transform: translateX(4px);
  }
  @media (max-width: 760px) {
    .product-card { width: 78vw; max-width: 360px; margin-right: 1rem; }
  }

  .product-actions {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    flex-wrap: wrap;
  }
  .product-deck {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.5rem 0.9rem 0.5rem 0.85rem;
    font-size: 0.7rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-soft);
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.25s ease;
    font-family: 'Inter', 'Noto Sans TC', sans-serif;
    font-weight: 600;
  }
  .product-deck svg { width: 12px; height: 12px; }
  .product-deck:hover {
    color: var(--burgundy);
    border-color: var(--burgundy);
    background: var(--paper-warm);
  }

  .pdf-modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(20, 16, 20, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }
  .pdf-modal.open {
    opacity: 1;
    pointer-events: auto;
  }
  .pdf-modal-frame {
    width: 100%;
    height: 100%;
    max-width: 1400px;
    background: white;
    border: 1px solid var(--line);
    box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.5);
  }
  .pdf-modal-close {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--paper);
    border: 1px solid var(--line);
    color: var(--ink);
    font-size: 1.1rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all 0.25s ease;
    z-index: 201;
    font-family: inherit;
  }
  .pdf-modal-close:hover {
    background: var(--burgundy);
    color: var(--paper);
    border-color: var(--burgundy);
    transform: rotate(90deg);
  }
  @media (max-width: 720px) {
    .pdf-modal { padding: 0.5rem; }
    .pdf-modal-close { top: 0.7rem; right: 0.7rem; width: 38px; height: 38px; }
  }

  /* ---------- About ---------- */
  .about { background: var(--paper); }
  .about-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: start;
  }
  .about-copy p { color: var(--ink-soft); margin-bottom: 1.2rem; font-size: 1.02rem; }
  .about-copy p strong { color: var(--burgundy); font-weight: 600; }
  .pillars {
    display: grid;
    gap: 1.4rem;
  }
  .pillar {
    background: white;
    border: 1px solid var(--line);
    border-left: 3px solid var(--gold);
    padding: 1.4rem 1.5rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }
  .pillar:hover { transform: translateX(4px); box-shadow: 0 14px 30px -18px rgba(89, 35, 53, 0.4); }
  .pillar h4 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.35rem;
    color: var(--burgundy);
    margin-bottom: 0.3rem;
  }
  .pillar h4 .zh { font-family: 'Noto Serif TC', serif; font-size: 0.85rem; color: var(--gold-deep); display: block; font-weight: 500; }
  .pillar p { color: var(--ink-soft); font-size: 0.92rem; }
  @media (max-width: 880px) { .about-grid { grid-template-columns: 1fr; gap: 2.5rem; } }

  /* ---------- AI Tools ---------- */
  .tools { background: linear-gradient(180deg, var(--paper) 0%, var(--paper-warm) 100%); }
  .tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.4rem;
  }
  .tool-card {
    background: white;
    border: 1px solid var(--line);
    padding: 1.8rem 1.6rem;
    position: relative;
    transition: all 0.3s ease;
    overflow: hidden;
  }
  .tool-card::after {
    content: '';
    position: absolute;
    inset: auto 0 0 0;
    height: 3px;
    background: var(--burgundy);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s ease;
  }
  .tool-card:hover { transform: translateY(-4px); box-shadow: 0 22px 40px -22px rgba(89, 35, 53, 0.4); }
  .tool-card:hover::after { transform: scaleX(1); }
  .tool-card .badge {
    display: inline-block;
    font-size: 0.65rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--gold-deep);
    margin-bottom: 0.8rem;
  }
  .tool-card h3 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.6rem;
    color: var(--burgundy);
    margin-bottom: 0.4rem;
  }
  .tool-card p { color: var(--ink-soft); font-size: 0.92rem; }
  .tool-icon {
    width: 44px; height: 44px;
    border-radius: 50%;
    background: var(--paper-warm);
    color: var(--burgundy);
    display: grid; place-items: center;
    font-family: 'Cormorant Garamond', serif;
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
    border: 1px solid var(--line);
  }

  /* ---------- SDGs ---------- */
  .sdgs {
    background: var(--burgundy);
    color: var(--paper);
    position: relative;
  }
  .sdgs::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      radial-gradient(ellipse at 20% 0%, rgba(179, 162, 142, 0.18), transparent 50%),
      radial-gradient(ellipse at 90% 100%, rgba(0, 0, 0, 0.2), transparent 60%);
    pointer-events: none;
  }
  .sdgs .container { position: relative; }
  .sdgs .section-head h2 { color: var(--paper); }
  .sdgs .section-head h2 .zh { color: var(--gold-light); }
  .sdgs .section-head p { color: rgba(250, 246, 240, 0.78); }
  .sdg-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.2rem;
  }
  .sdg {
    padding: 1.4rem 1.2rem;
    background: rgba(250, 246, 240, 0.04);
    border: 1px solid rgba(179, 162, 142, 0.25);
    transition: all 0.3s ease;
  }
  .sdg:hover { background: rgba(179, 162, 142, 0.1); border-color: var(--gold); transform: translateY(-3px); }
  .sdg .num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.4rem;
    color: var(--gold);
    line-height: 1;
    font-weight: 600;
  }
  .sdg h4 {
    font-size: 0.95rem;
    color: var(--paper);
    margin-top: 0.6rem;
    margin-bottom: 0.3rem;
    font-weight: 600;
  }
  .sdg p { font-size: 0.8rem; color: rgba(250, 246, 240, 0.65); }

  /* ---------- Schedule ---------- */
  .schedule { background: var(--paper); }
  .day-tabs {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--line);
  }
  .day-tab {
    background: transparent;
    border: none;
    padding: 1rem 1.4rem 1.1rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.78rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-soft);
    cursor: pointer;
    position: relative;
    transition: color 0.2s ease;
  }
  .day-tab .num { font-family: 'Cormorant Garamond', serif; font-size: 1.4rem; letter-spacing: 0; text-transform: none; color: var(--burgundy); margin-right: 0.5rem; font-weight: 600; }
  .day-tab em { font-style: normal; color: var(--gold-deep); font-weight: 400; margin-left: 0.15rem; }
  .day-tab.active em { color: var(--burgundy-soft); }
  .day-tab::after {
    content: '';
    position: absolute;
    left: 1.4rem; right: 1.4rem; bottom: -1px;
    height: 2px;
    background: var(--burgundy);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
  }
  .day-tab.active { color: var(--burgundy); }
  .day-tab.active::after { transform: scaleX(1); }
  .day-tab:hover { color: var(--burgundy); }

  .day-panel { display: none; animation: fade 0.4s ease; }
  .day-panel.active { display: grid; gap: 1rem; }
  @keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

  .session {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.2rem 2rem;
    align-items: start;
    padding: 1.4rem 1.6rem;
    background: white;
    border: 1px solid var(--line);
    border-left: 3px solid var(--gold);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .session:hover { transform: translateX(4px); box-shadow: 0 12px 28px -18px rgba(89, 35, 53, 0.4); }
  .session h4 {
    font-size: 1.05rem;
    color: var(--burgundy);
    margin-bottom: 0.35rem;
    font-weight: 600;
    grid-column: 1;
  }
  .session p { color: var(--ink-soft); font-size: 0.92rem; grid-column: 1; }
  .session .mat {
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--gold-deep);
    font-style: normal;
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
    text-align: right;
    white-space: nowrap;
    max-width: 220px;
  }
  .session .mat:empty { display: none; }
  .session.break { display: none; }
  @media (max-width: 640px) {
    .session { grid-template-columns: 1fr; }
    .session .mat { grid-column: 1; grid-row: auto; text-align: left; white-space: normal; }
  }

  /* ---------- Mentors ---------- */
  .mentors {
    background: linear-gradient(180deg, var(--paper-warm) 0%, var(--paper) 100%);
  }
  .mentors-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }
  .mentor-side { text-align: center; }
  .mentor-logo {
    height: 64px;
    margin: 0 auto 1.5rem;
    display: block;
  }
  .mentor-side.cis .mentor-logo { height: 88px; }
  .mentor-list { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; }
  .mentor {
    text-align: center;
  }
  .mentor-avatar {
    width: 130px; height: 130px;
    border-radius: 24px;
    margin: 0 auto 0.8rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px -12px rgba(89, 35, 53, 0.3);
    background: var(--paper);
  }
  .mentor-avatar img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
  }
  .mentor h4 { color: var(--burgundy); font-size: 1.05rem; margin-bottom: 0.15rem; }
  .mentor .zh-name { color: var(--gold-deep); font-size: 0.92rem; margin-bottom: 0.3rem; }
  .mentor .role { color: var(--ink-soft); font-size: 0.82rem; letter-spacing: 0.05em; }
  .mentor-divider {
    width: 1px;
    align-self: stretch;
    background: repeating-linear-gradient(180deg, var(--gold) 0 6px, transparent 6px 14px);
  }

  /* Featured Program Director */
  .program-lead {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem 2.4rem;
    background: white;
    border: 1px solid var(--line);
    border-left: 4px solid var(--burgundy);
    margin-bottom: 3rem;
    position: relative;
    box-shadow: 0 20px 50px -28px rgba(89, 35, 53, 0.35);
  }
  .program-lead::before {
    content: 'PROGRAM DIRECTOR';
    position: absolute;
    top: -10px; left: 1.6rem;
    background: white;
    padding: 0 0.7rem;
    font-size: 0.62rem;
    letter-spacing: 0.28em;
    color: var(--burgundy);
  }
  .program-lead .mentor-avatar {
    width: 110px; height: 110px;
    border-radius: 50%;
    flex-shrink: 0;
    margin: 0;
    box-shadow: 0 12px 30px -12px rgba(89, 35, 53, 0.4);
  }
  .program-lead .lead-text { flex: 1; }
  .program-lead h3 {
    font-family: 'Cormorant Garamond', 'Noto Serif TC', serif;
    font-size: 1.85rem;
    color: var(--burgundy);
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 0.2rem;
  }
  .program-lead .zh {
    font-family: 'Noto Serif TC', serif;
    font-size: 1.05rem;
    color: var(--gold-deep);
    margin-bottom: 0.5rem;
  }
  .program-lead .lead-role {
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--burgundy);
    margin-bottom: 0.6rem;
  }
  .program-lead p {
    color: var(--ink-soft);
    font-size: 0.95rem;
    max-width: 60ch;
  }
  @media (max-width: 720px) {
    .program-lead { flex-direction: column; text-align: center; padding: 2rem 1.4rem 1.6rem; }
    .program-lead::before { left: 50%; transform: translateX(-50%); }
    .program-lead .mentor-avatar { width: 100px; height: 100px; }
  }
  @media (max-width: 720px) {
    .mentors-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .mentor-divider { display: none; }
  }

  /* ---------- CTA ---------- */
  .cta {
    background: var(--burgundy);
    color: var(--paper);
    text-align: center;
    padding: clamp(4rem, 8vw, 6rem) 0;
    position: relative;
    overflow: hidden;
  }
  .cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 50%, rgba(179, 162, 142, 0.18), transparent 60%);
  }
  .cta .container { position: relative; }
  .cta h2 {
    font-family: 'Cormorant Garamond', 'Noto Serif TC', serif;
    font-weight: 500;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.1;
    margin-bottom: 1rem;
  }
  .cta h2 .zh { display: block; font-size: 0.55em; color: var(--gold-light); margin-top: 0.4rem; }
  .cta p { color: rgba(250, 246, 240, 0.8); max-width: 540px; margin: 0 auto 2rem; }

  /* ---------- Footer ---------- */
  footer {
    background: var(--burgundy-deep);
    color: var(--paper);
    padding: 3rem 0 2rem;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 2rem;
  }
  .footer-grid h5 {
    font-size: 0.72rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1rem;
  }
  .footer-grid p, .footer-grid a { font-size: 0.9rem; color: rgba(250, 246, 240, 0.7); line-height: 1.7; }
  .footer-grid a:hover { color: var(--gold-light); }
  .footer-grid .zh-address { color: rgba(250, 246, 240, 0.55); font-size: 0.85rem; margin-top: 0.4rem; }
  .footer-brand { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 1rem; }
  .footer-brand img { height: 38px; }
  .footer-brand .name { font-family: 'Cormorant Garamond', serif; font-size: 1.2rem; color: var(--paper); font-weight: 600; }
  .footer-bottom {
    border-top: 1px solid rgba(179, 162, 142, 0.2);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.78rem;
    color: rgba(250, 246, 240, 0.5);
  }
  @media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: 2rem; } }

  /* ---------- Reveal animation ---------- */
  .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .reveal.visible { opacity: 1; transform: translateY(0); }