:root {
        --ink: #444;
        --paper: #f5f2ed;
        --accent: #c8501a;
        --sub-accent: #5f8fa8;
        --sub-accent-bg: rgba(95, 143, 168, 0.2);
        --muted: #8a8580;
        --line: #d8d4ce;
      }

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

      html {
        scroll-behavior: smooth;
      }

      body {
        color: #555;
        font-family: "Noto Sans JP", sans-serif;
        font-weight: 300;
        line-height: 1.8;
        overflow-x: hidden;
      }

      .layout {
        min-height: 100vh;
      }

      .sidebar-nav {
        position: fixed;
        top: 0;
        left: 0;
        z-index: 100;
        width: 210px;
        height: 100vh;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: space-between;
        padding: 2rem 1.2rem;
        background: rgba(245, 242, 237, 0.92);
        backdrop-filter: blur(8px);
        border-right: 1px solid var(--line);
      }

      .nav-logo {
        img {
          width: 30px;
          height: auto;
          vertical-align: bottom;
        }
      }

      .page-content {
        margin-left: 210px;
      }

      .nav-links {
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: 1rem;
        list-style: none;
      }

      .nav-links a {
        display: inline-flex;
        align-items: center;
        font-size: 0.72rem;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--muted);
        text-decoration: none;
        transition: color 0.2s;
        width: 100%;
      }

      .nav-links a:hover,
      .nav-links a.is-active {
        color: var(--accent);
      }

      .hero {
        min-height: 100vh;
        display: grid;
        grid-template-columns: 1fr 1fr;
      }

      .hero-left {
        position: relative;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        justify-content: center;
        padding: 30px;
        border-right: 1px solid var(--line);

        >* {
          position: relative;
          z-index: 1;
        }

        &::after {
          content: "";
          position: absolute;
          top: 0;
          left: 0;
          right: 0;
          bottom: 0;
          background-image: url("../img/bg_flower.jpg");
          background-repeat: no-repeat;
          background-position: left bottom;
          background-size: cover;
          opacity: 0.5;
          /* -webkit-mask-image: radial-gradient(
            ellipse at center,
            #000 62%,
            rgba(0, 0, 0, 0.82) 76%,
            rgba(0, 0, 0, 0.45) 88%,
            transparent 100%
          );
          mask-image: radial-gradient(
            ellipse at center,
            #000 62%,
            rgba(0, 0, 0, 0.82) 76%,
            rgba(0, 0, 0, 0.45) 88%,
            transparent 100%
          ); */
          z-index: 0;
          pointer-events: none;
        }

        .hero-left_inner {
          background: #fff;
          padding: 50px 30px;
          opacity: .6;
          border-radius: 20px;
        }
      }

      .hero-label {
        font-family: "Space Mono", monospace;
        font-size: 0.7rem;
        color: var(--accent);
        letter-spacing: 0.2em;
        text-transform: uppercase;
        margin-bottom: 2rem;
      }

      .hero-name {
        font-family: "Cormorant Garamond", serif;
        font-size: clamp(3.5rem, 7vw, 6rem);
        font-weight: 300;
        line-height: 1.05;
        letter-spacing: -0.02em;
        margin-bottom: 1.5rem;
      }

      .hero-name em {
        font-style: italic;
        color: var(--accent);
      }

      .hero-desc {
        font-size: 0.95rem;
        color: var(--muted);
        max-width: 420px;
        line-height: 1.9;
        margin-bottom: 3rem;
      }

      .hero-cta {
        display: inline-flex;
        align-items: center;
        gap: 0.8rem;
        background: var(--ink);
        color: var(--paper);
        padding: 0.9rem 2rem;
        font-size: 0.8rem;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        text-decoration: none;
        transition: background 0.2s;
        width: fit-content;
      }

      .hero-cta:hover {
        background: var(--accent);
      }

      .hero-right {
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        padding: 6rem 3rem 4rem 4rem;
      }

      .hero-stats {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2px;
        margin-bottom: 3rem;
      }

      .stat {
        background: white;
        padding: 2rem 1.5rem;
        border: 1px solid var(--line);
      }

      .stat-num {
        font-family: "Cormorant Garamond", serif;
        font-size: 2.8rem;
        font-weight: 300;
        line-height: 1;
        margin-bottom: 0.4rem;
      }

      .stat-num span {
        font-size: 1.2rem;
        color: var(--accent);
      }

      .stat-label {
        font-size: 0.72rem;
        color: var(--muted);
        letter-spacing: 0.08em;
      }

      .hero-stack {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
      }

      .tag {
        font-family: "Space Mono", monospace;
        font-size: 0.65rem;
        padding: 0.35rem 0.8rem;
        border: 1px solid var(--line);
        color: var(--muted);
        border: 1px solid var(--sub-accent);
        color: var(--sub-accent);
      }

      .tag.accent {
        border-color: var(--accent);
        color: var(--accent);
      }

      section {
        padding: 7rem 3rem;
      }

      .section-header {
        display: flex;
        align-items: baseline;
        gap: 1.5rem;
        margin-bottom: 4rem;
        padding-bottom: 1.5rem;
        border-bottom: 1px solid var(--line);
      }

      .section-num {
        font-family: "Space Mono", monospace;
        font-size: 0.7rem;
        color: var(--accent);
        letter-spacing: 0.15em;
      }

      .section-title {
        font-family: "Cormorant Garamond", serif;
        font-size: clamp(2rem, 4vw, 3rem);
        font-weight: 300;
      }

      .services {
        background: white;
      }

      .services-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2px;
      }

      .service-card {
        padding: 3rem 2.5rem;
        border: 1px solid var(--line);
        background: var(--paper);
        transition: background 0.2s;
      }

      .service-card:hover {
        background: white;
      }

      .service-icon {
        font-family: "Space Mono", monospace;
        font-size: 0.65rem;
        color: var(--accent);
        letter-spacing: 0.15em;
        margin-bottom: 1.5rem;
      }

      .service-name {
        font-family: "Cormorant Garamond", serif;
        font-size: 1.6rem;
        font-weight: 400;
        margin-bottom: 1rem;
      }

      .service-desc {
        font-size: 0.85rem;
        color: var(--muted);
        line-height: 1.9;
      }

      .service-items {
        margin-top: 1.5rem;
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 0.4rem;
      }

      .service-items li {
        font-size: 0.78rem;
        color: var(--muted);
        padding-left: 1rem;
        position: relative;
      }

      .service-items li::before {
        content: "—";
        position: absolute;
        left: 0;
        color: var(--accent);
      }

      .works-list {
        display: flex;
        flex-direction: column;
      }

      .work-item {
        display: grid;
        grid-template-columns: 180px 1fr auto;
        align-items: start;
        gap: 3rem;
        padding: 2.5rem 0;
        border-bottom: 1px solid var(--line);
      }

      .work-period {
        font-family: "Space Mono", monospace;
        font-size: 0.65rem;
        color: var(--muted);
        letter-spacing: 0.08em;
        margin-bottom: 0.5rem;
      }

      .work-company {
        font-size: 0.85rem;
        font-weight: 500;
      }

      .work-title {
        font-family: "Cormorant Garamond", serif;
        font-size: 1.5rem;
        font-weight: 400;
        margin-bottom: 0.8rem;
      }

      .work-desc {
        font-size: 0.85rem;
        color: var(--muted);
        line-height: 1.9;
        max-width: 600px;
      }

      .work-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.4rem;
        margin-top: 1rem;
      }

      .work-badge {
        font-family: "Space Mono", monospace;
        font-size: 0.6rem;
        padding: 0.25rem 0.6rem;
        background: #6f6f6f;
        color: var(--paper);
        letter-spacing: 0.05em;
      }

      .work-badge.light {
        background: #fff;
        border: 1px solid var(--line);
        color: var(--muted);
      }

      .work-arrow {
        font-size: 1.2rem;
        color: var(--line);
        align-self: center;
        transition: color 0.2s;
      }

      .work-item:hover .work-arrow {
        color: var(--accent);
      }

      .site-gallery {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.8rem;
        margin-top: 1.2rem;
      }

      .site-shot {
        border: 1px solid var(--line);
        background: white;
        overflow: hidden;
      }

      .site-shot img {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: cover;
      }

      .skills {
        background: var(--ink);
        color: var(--paper);
      }

      .skills .section-title {
        color: var(--paper);
      }

      .skills .section-header {
        border-color: rgba(255, 255, 255, 0.1);
      }

      .skills-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
      }

      .skill-group-label {
        font-family: "Space Mono", monospace;
        font-size: 0.65rem;
        color: var(--accent);
        letter-spacing: 0.15em;
        text-transform: uppercase;
        margin-bottom: 1rem;
        padding-bottom: 0.8rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      }

      .skill-items {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
      }

      .skill-chip {
        font-size: 0.8rem;
        padding: 0.4rem 1rem;
        border: 1px solid var(--sub-accent);
        color: #d8edf7;
        background: var(--sub-accent-bg);
      }

      .skill-chip.main {
        border-color: var(--accent);
        color: var(--paper);
        background: rgba(200, 80, 26, 0.15);
      }

      .contact {
        text-align: center;
        padding: 8rem 3rem;
      }

      .contact-pre {
        font-family: "Space Mono", monospace;
        font-size: 0.7rem;
        color: var(--accent);
        letter-spacing: 0.2em;
        margin-bottom: 2rem;
      }

      .contact-heading {
        font-family: "Cormorant Garamond", serif;
        font-size: clamp(1.2rem, 3vw, 2.5rem);
        font-weight: 300;
        line-height: 1.1;
        margin-bottom: 1.5rem;
      }

      .contact-heading em {
        font-style: italic;
        color: var(--accent);
      }

      .contact-sub {
        font-size: 0.9rem;
        color: var(--muted);
        max-width: 480px;
        margin: 0 auto 3rem;
      }

      .contact-btn {
        display: inline-flex;
        align-items: center;
        gap: 1rem;
        background: var(--ink);
        color: var(--paper);
        padding: 1.1rem 2.8rem;
        font-size: 0.8rem;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        text-decoration: none;
        transition: background 0.2s;
      }

      .contact-btn:hover {
        background: var(--accent);
      }

      footer {
        border-top: 1px solid var(--line);
        padding: 2rem 3rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
      }

      .footer-copy {
        font-family: "Space Mono", monospace;
        font-size: 0.65rem;
        color: var(--muted);
        letter-spacing: 0.08em;
      }

      .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition:
          opacity 0.7s ease,
          transform 0.7s ease;
      }

      .reveal.visible {
        opacity: 1;
        transform: none;
      }

      @media (max-width: 900px) {
        .layout {
          display: block;
        }

        .sidebar-nav {
          position: sticky;
          top: 0;
          width: 100%;
          height: auto;
          flex-direction: row;
          align-items: center;
          padding: 1.2rem 1.5rem;
          border-right: none;
          border-bottom: 1px solid var(--line);
        }

        .nav-links {
          display: none;
        }

        .page-content {
          margin-left: 0;
        }

        .hero {
          grid-template-columns: 1fr;
        }

        .hero-left {
          padding: 5rem 1.5rem 3rem;
          border-right: none;
          border-bottom: 1px solid var(--line);
        }

        .hero-right {
          padding: 3rem 1.5rem;
        }

        .services-grid {
          grid-template-columns: 1fr;
        }

        .work-item {
          grid-template-columns: 1fr;
          gap: 1rem;
        }

        .work-arrow {
          display: none;
        }

        .site-gallery {
          grid-template-columns: 1fr;
          gap: 0.7rem;
        }

        .skills-grid {
          grid-template-columns: 1fr;
        }

        section {
          padding: 5rem 1.5rem;
        }

        footer {
          flex-direction: column;
          gap: 1rem;
          text-align: center;
        }
      }