/* ── HERO ── */
    .hero {
      background: var(--ink);
      padding: 9rem 2rem 6rem;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .hero-bg {
      position: absolute; inset: 0;
      background:
        radial-gradient(ellipse 70% 55% at 50% 85%, rgba(196,149,106,0.12) 0%, transparent 65%),
        radial-gradient(ellipse 40% 30% at 20% 20%, rgba(122,140,114,0.06) 0%, transparent 60%),
        linear-gradient(160deg, #1c1a17 0%, #252018 60%, #1e1b14 100%);
    }
    .hero-lines {
      position: absolute; inset: 0; pointer-events: none;
    }
    .hero-lines svg { width: 100%; height: 100%; }
    .hero-inner {
      position: relative; z-index: 2;
      max-width: 680px;
      margin: 0 auto;
    }
    .hero-label {
      font-family: 'EB Garamond', serif;
      font-style: italic;
      font-size: 0.88rem;
      color: var(--accent3);
      letter-spacing: 0.28em;
      margin-bottom: 1.6rem;
      opacity: 0;
      animation: fadeUp 0.9s 0.2s ease forwards;
    }
    .hero-title {
      font-family: 'Noto Serif TC', serif;
      font-size: clamp(2rem, 5.5vw, 3.2rem);
      font-weight: 600;
      color: var(--paper);
      letter-spacing: 0.1em;
      line-height: 1.3;
      margin-bottom: 1.4rem;
      opacity: 0;
      animation: fadeUp 0.9s 0.4s ease forwards;
    }
    .hero-divider {
      width: 40px; height: 1px;
      background: linear-gradient(90deg, transparent, var(--accent3), transparent);
      margin: 0 auto 1.8rem;
      opacity: 0;
      animation: fadeIn 0.9s 0.6s ease forwards;
    }
    .hero-desc {
      font-size: 0.87rem;
      color: rgba(250,247,242,0.48);
      letter-spacing: 0.06em;
      line-height: 2.1;
      max-width: 500px;
      margin: 0 auto;
      opacity: 0;
      animation: fadeUp 0.9s 0.75s ease forwards;
    }

    /* ── INTRO SECTION ── */
    .intro-section {
      padding: 5rem 2rem 3rem;
      max-width: 720px;
      margin: 0 auto;
      text-align: center;
    }
    .intro-eyebrow {
      font-family: 'EB Garamond', serif;
      font-style: italic;
      font-size: 0.8rem;
      letter-spacing: 0.28em;
      color: var(--accent2);
      margin-bottom: 1.2rem;
    }
    .intro-heading {
      font-family: 'Noto Serif TC', serif;
      font-size: clamp(1.2rem, 3vw, 1.55rem);
      font-weight: 600;
      color: var(--text-main);
      letter-spacing: 0.06em;
      line-height: 1.6;
      margin-bottom: 1.6rem;
    }
    .intro-
    .intro-body strong {
      color: var(--accent1);
      font-weight: 500;
    }
    .intro-divider {
      width: 1px;
      height: 48px;
      background: linear-gradient(to bottom, transparent, var(--paper-mid), transparent);
      margin: 3rem auto 0;
    }

    /* ── TOOLS GRID ── */
    .tools-section {
      padding: 3rem 2rem 7rem;
      max-width: 900px;
      margin: 0 auto;
    }

    .tools-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5px;
      background: rgba(0,0,0,0.07);
      border: 1px solid rgba(0,0,0,0.07);
    }

    .tool-card {
      background: var(--paper);
      padding: 2.8rem 2.4rem;
      position: relative;
      overflow: hidden;
      transition: background 0.3s, transform 0.3s;
      text-decoration: none;
      display: block;
      color: inherit;
    }
    .tool-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0;
      width: 0; height: 3px;
      background: linear-gradient(90deg, var(--accent3), var(--accent2));
      transition: width 0.4s ease;
    }
    .tool-card:hover {
      background: var(--paper-warm);
      transform: translateY(-2px);
    }
    .tool-card:hover::before {
      width: 100%;
    }

    /* 工具裝飾數字 */
    .tool-number {
      position: absolute;
      top: 1.6rem; right: 2rem;
      font-family: 'EB Garamond', serif;
      font-size: 3.5rem;
      color: rgba(0,0,0,0.04);
      line-height: 1;
      font-weight: 400;
      pointer-events: none;
      user-select: none;
    }

    .tool-category {
      font-family: 'EB Garamond', serif;
      font-style: italic;
      font-size: 0.72rem;
      letter-spacing: 0.22em;
      color: var(--accent2);
      margin-bottom: 0.6rem;
    }
    .tool-name {
      font-family: 'Noto Serif TC', serif;
      font-size: 1.15rem;
      font-weight: 600;
      color: var(--text-main);
      letter-spacing: 0.06em;
      margin-bottom: 0.4rem;
      line-height: 1.4;
    }
    .tool-subtitle {
      font-family: 'Noto Serif TC', serif;
      font-size: 0.78rem;
      font-weight: 400;
      color: var(--text-soft);
      letter-spacing: 0.08em;
      margin-bottom: 1rem;
    }
    .tool-tag {
      display: inline-block;
      font-size: 0.62rem;
      letter-spacing: 0.12em;
      padding: 0.22rem 0.65rem;
      background: var(--paper-mid);
      color: var(--text-soft);
      border-radius: 2px;
      margin-bottom: 1.2rem;
    }
    .tool-desc {
      font-size: 0.79rem;
      color: var(--text-soft);
      line-height: 2;
      margin-bottom: 1.8rem;
    }

    /* 小亮點列表 */
    .tool-highlights {
      list-style: none;
      margin-bottom: 1.8rem;
    }
    .tool-highlights li {
      font-size: 0.74rem;
      color: var(--text-mid);
      line-height: 1.8;
      padding-left: 1.1rem;
      position: relative;
      margin-bottom: 0.3rem;
    }
    .tool-highlights li::before {
      content: '·';
      position: absolute;
      left: 0;
      color: var(--accent3);
      font-size: 1rem;
      line-height: 1.5;
    }

    .tool-arrow {
      font-size: 0.75rem;
      color: var(--accent3);
      letter-spacing: 0.18em;
      font-family: 'EB Garamond', serif;
      display: flex;
      align-items: center;
      gap: 0.4rem;
      transition: gap 0.2s;
    }
    .tool-card:hover .tool-arrow {
      gap: 0.7rem;
    }

    /* ── ABOUT STRIP ── */
    .about-strip {
      background: var(--paper-warm);
      border-top: 1px solid var(--paper-mid);
      border-bottom: 1px solid var(--paper-mid);
      padding: 4rem 2rem;
    }
    .about-inner {
      max-width: 680px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 3rem;
      align-items: center;
    }
    .about-portrait {
      width: 96px; height: 96px;
      border-radius: 50%;
      border: 2px solid var(--accent2);
      overflow: hidden;
      flex-shrink: 0;
    }
    .about-portrait img {
      width: 100%; height: 100%;
      object-fit: cover;
      object-position: center top;
      display: block;
    }
    .about-eyebrow {
      font-family: 'EB Garamond', serif;
      font-style: italic;
      font-size: 0.75rem;
      letter-spacing: 0.25em;
      color: var(--accent2);
      margin-bottom: 0.6rem;
    }
    .about-name {
      font-family: 'Noto Serif TC', serif;
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--text-main);
      letter-spacing: 0.08em;
      margin-bottom: 0.8rem;
    }
    .about-bio {
      font-size: 0.79rem;
      color: var(--text-soft);
      line-height: 2;
      letter-spacing: 0.03em;
    }
    .about-link {
      display: inline-block;
      margin-top: 1rem;
      font-family: 'EB Garamond', serif;
      font-style: italic;
      font-size: 0.8rem;
      letter-spacing: 0.18em;
      color: var(--accent2);
      text-decoration: none;
      border-bottom: 1px solid rgba(196,149,106,0.3);
      transition: color 0.2s, border-color 0.2s;
    }
    .about-link:hover {
      color: var(--accent1);
      border-color: var(--accent1);
    }

    /* ── BACK CTA ── */
    .back-cta {
      text-align: center;
      padding: 5rem 2rem 6rem;
      background: var(--ink);
      position: relative;
      overflow: hidden;
    }
    .back-cta::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse 50% 60% at 50% 100%, rgba(196,149,106,0.08) 0%, transparent 65%);
      pointer-events: none;
    }
    .back-cta-label {
      font-family: 'EB Garamond', serif;
      font-style: italic;
      font-size: 0.82rem;
      letter-spacing: 0.25em;
      color: rgba(250,247,242,0.3);
      margin-bottom: 1.2rem;
    }
    .back-cta-text {
      font-family: 'Noto Serif TC', serif;
      font-size: 1rem;
      color: rgba(250,247,242,0.7);
      letter-spacing: 0.06em;
      margin-bottom: 2rem;
    }
    .btn-back {
      display: inline-block;
      padding: 0.85rem 2.2rem;
      background: transparent;
      border: 1px solid rgba(250,247,242,0.25);
      color: rgba(250,247,242,0.6);
      font-family: 'Noto Serif TC', serif;
      font-size: 0.82rem;
      letter-spacing: 0.18em;
      text-decoration: none;
      transition: border-color 0.3s, color 0.3s;
    }
    .btn-back:hover {
      border-color: var(--accent3);
      color: var(--accent3);
    }

    /* ── FOOTER ── */
    footer {
      background: var(--ink);
      color: rgba(250,247,242,0.55);
      padding: 2.5rem 2rem;
      text-align: center;
      border-top: 1px solid rgba(250,247,242,0.06);
      font-size: 0.78rem;
      line-height: 2;
      letter-spacing: 0.04em;
    }
    footer .inner { max-width: 600px; margin: 0 auto; }
    footer .footer-links {
      display: flex;
      justify-content: center;
      gap: 2rem;
      margin-bottom: 1rem;
      flex-wrap: wrap;
    }
    footer .footer-links a {
      font-family: 'EB Garamond', serif;
      font-style: italic;
      font-size: 0.78rem;
      color: rgba(250,247,242,0.4);
      text-decoration: none;
      letter-spacing: 0.1em;
      transition: color 0.2s;
    }
    footer .footer-links a:hover { color: var(--accent3); }
    .footer-copy {
      font-size: 0.68rem;
      color: rgba(250,247,242,0.3);
      letter-spacing: 0.06em;
    }

    /* ── ANIMATIONS ── */

    /* ── RESPONSIVE ── */
    @media (max-width: 900px) {
      .tools-grid { grid-template-columns: 1fr; }
      .nav-title { display: none; }
      .about-inner { grid-template-columns: 1fr; text-align: center; gap: 1.5rem; }
      .about-portrait { margin: 0 auto; }
    }