:root {
        --bg: #000000;
        --bg-soft: #000000;
        --panel: transparent;
        --panel-strong: transparent;
        --text: #ffffff;
        --muted: #ffffff;
        --line: #ffffff;
        --accent: #ffffff;
        --accent-2: #ffffff;
        --accent-3: #ffffff;
        --shadow: none;
        --glass-bg: rgba(255, 255, 255, 0.06);
        --glass-bg-soft: rgba(255, 255, 255, 0.04);
        --glass-border: rgba(255, 255, 255, 0.28);
        --glass-blur: 14px;
      }

      * {
        box-sizing: border-box;
      }

      html {
        scroll-behavior: smooth;
        scroll-padding-top: 110px;
        color-scheme: dark light;
      }

      body {
        margin: 0;
        min-height: 100vh;
        color: var(--text);
        background: var(--bg);
        font-family: "Aptos", "Segoe UI", system-ui, sans-serif;
      }

      body::before {
        content: none;
      }

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

      .shell {
        width: min(1120px, calc(100% - 32px));
        margin: 0 auto;
        padding: 24px 0 56px;
      }

      .topbar {
        position: sticky;
        top: 12px;
        z-index: 20;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        margin-bottom: 24px;
        padding: 14px 18px;
        border: none;
        border-radius: 20px;
        background: rgba(0, 0, 0, 0.24);
        backdrop-filter: blur(24px) saturate(145%);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
        opacity: 0;
        transform: translateY(-18px);
        pointer-events: none;
        transition:
          opacity 0.35s ease,
          transform 0.35s ease;
      }

      .topbar.is-visible {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
      }

      .brand {
        display: flex;
        align-items: center;
        gap: 12px;
        min-width: 0;
      }

      .brand-mark {
        display: grid;
        place-items: center;
        width: 52px;
        height: 52px;
        border-radius: 14px;
        background: #000000;
        border: none;
        font-weight: 700;
        letter-spacing: 0.08em;
        overflow: hidden;
      }

      .brand-mark img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
        transform: rotate(0deg);
        transform-origin: center;
      }

      .brand-copy {
        min-width: 0;
      }

      .brand-copy strong {
        display: block;
        font-size: 1rem;
      }

      .brand-copy span {
        color: #ffffff;
        font-size: 0.92rem;
      }

      .nav {
        display: flex;
        align-items: center;
        justify-content: flex-end;
      }

      .nav-links {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: flex-end;
      }

      .nav-links a {
        padding: 9px 12px;
        border-radius: 999px;
        color: #ffffff;
        border: none;
        background: rgba(255, 255, 255, 0.12);
        transition: 0.2s ease;
      }

      .nav-links a:hover,
      .nav-links a.active {
        color: #ffffff;
        background: rgba(255, 255, 255, 0.18);
      }

      .nav-mobile-mark {
        display: none;
      }

      .hero {
        display: grid;
        grid-template-columns: 1fr;
        gap: 64px;
        align-items: stretch;
        justify-items: center;
      }

      [id] {
        scroll-margin-top: 110px;
      }

      .reveal-section {
        opacity: 0;
        transform: translateY(28px);
        transition:
          opacity 0.75s ease,
          transform 0.75s ease;
        will-change: opacity, transform;
      }

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

      .panel {
        border: none;
        border-radius: 28px;
        background: transparent;
        box-shadow: var(--shadow);
      }

      .hero-main {
        width: min(100%, 760px);
        margin: 0 auto;
        min-height: 100vh;
        padding: 56px 28px 110px;
        position: relative;
        overflow: hidden;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
      }

      .hero-main::after {
        content: none;
      }

      h1,
      h2,
      h3,
      p {
        margin: 0;
      }

      .hero h1 {
        font-size: clamp(2.6rem, 7vw, 5.2rem);
        line-height: 0.95;
        letter-spacing: -0.05em;
        max-width: 11ch;
        margin: 0 auto;
      }

      .hero-name {
        margin-top: 14px;
        font-size: clamp(0.95rem, 1.4vw, 1.08rem);
        letter-spacing: 0.02em;
        color: rgba(255, 255, 255, 0.9);
        font-weight: 500;
      }

      .hero-name.is-hidden {
        display: none;
      }

      .hero-lead {
        max-width: 64ch;
        margin-top: 20px;
        margin-left: auto;
        margin-right: auto;
        color: #ffffff;
        font-size: 1.05rem;
        line-height: 1.75;
      }

      .tag-row {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        margin-top: 24px;
      }

      .tag {
        padding: 10px 14px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.12);
        border: none;
        color: #ffffff;
      }

      .cta-row {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
        margin-top: 28px;
      }

      .button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        padding: 12px 18px;
        border-radius: 14px;
        font-weight: 600;
        transition: 0.2s ease;
      }

      .button-primary {
        background: var(--glass-bg);
        color: #ffffff;
        border: 1px solid var(--glass-border);
      }

      .button-secondary {
        color: #ffffff;
        border: 1px solid var(--glass-border);
        background: var(--glass-bg-soft);
      }

      .button:hover {
        transform: translateY(-1px);
      }

      .hero-side {
        display: grid;
        gap: 18px;
        padding: 0 20px 20px;
        width: min(100%, 760px);
        margin-top: 96px;
      }

      .stat-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
      }

      .stat,
      .mini-card {
        border: 1px solid var(--glass-border);
        border-radius: 22px;
        background: var(--glass-bg);
        backdrop-filter: blur(var(--glass-blur));
      }

      .stat {
        padding: 18px;
      }

      .stat strong {
        display: block;
        font-size: 1.65rem;
        letter-spacing: -0.04em;
      }

      .stat span {
        color: #ffffff;
        font-size: 0.95rem;
      }

      .mini-card {
        padding: 18px;
      }

      .mini-card h3,
      .section-title h2 {
        font-size: 1.05rem;
        letter-spacing: 0.02em;
        margin-bottom: 10px;
      }

      .mini-card p,
      .section-copy,
      .contact-item,
      .timeline p,
      .project p,
      .skill-group li,
      .cert-list li,
      .award-list li,
      .edu-item p {
        color: #ffffff;
        line-height: 1.65;
      }

      .contact-stack {
        display: grid;
        gap: 10px;
      }

      .contact-item {
        display: flex;
        justify-content: space-between;
        gap: 14px;
        padding: 12px 0;
        border-top: 1px solid #ffffff;
      }

      .contact-item:first-child {
        border-top: 0;
        padding-top: 0;
      }

      .contact-item span:last-child {
        text-align: right;
        color: #ffffff;
      }

      .sections {
        display: grid;
        gap: 20px;
        margin-top: 36px;
      }

      .sections > section {
        border-top: 1px solid rgba(255, 255, 255, 0.7);
        padding-top: 24px;
      }

      .section-card {
        padding: 28px;
        border: none;
        border-radius: 0;
        background: transparent;
        backdrop-filter: none;
        box-shadow: none;
      }

      .section-title {
        display: flex;
        justify-content: space-between;
        gap: 20px;
        align-items: baseline;
        margin-bottom: 18px;
      }

      .section-title p {
        max-width: 62ch;
      }

      .section-copy {
        max-width: 72ch;
        margin-top: 10px;
      }

      .timeline,
      .project-grid,
      .award-grid,
      .edu-grid,
      .cert-grid,
      .skills-grid,
      .volunteer-grid {
        display: grid;
        gap: 16px;
      }

      .timeline-item,
      .project,
      .award,
      .edu-item,
      .cert-item,
      .skill-group,
      .volunteer-item {
        padding: 18px;
        border-radius: 18px;
        background: rgba(255, 255, 255, 0.05);
        border: none;
        backdrop-filter: blur(calc(var(--glass-blur) - 2px));
      }

      .timeline-item header,
      .project header,
      .award header,
      .edu-item header,
      .cert-item header,
      .volunteer-item header {
        display: flex;
        justify-content: space-between;
        gap: 12px;
        flex-wrap: wrap;
        margin-bottom: 10px;
      }

      .timeline-item h3,
      .project h3,
      .award h3,
      .edu-item h3,
      .cert-item h3,
      .volunteer-item h3 {
        font-size: 1.08rem;
        margin: 0;
      }

      .meta {
        color: #ffffff;
        font-weight: 600;
      }

      .chips {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 12px;
      }

      .chip {
        padding: 7px 11px;
        border-radius: 999px;
        background: var(--glass-bg-soft);
        border: 1px solid var(--glass-border);
        color: #ffffff;
        font-size: 0.92rem;
      }

      .project-grid,
      .award-grid,
      .edu-grid,
      .volunteer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

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

      .skills-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }

      .skill-group h3 {
        margin-bottom: 12px;
      }

      .skill-group ul,
      .cert-list,
      .award-list {
        margin: 0;
        padding-left: 18px;
      }

      .skill-group li,
      .cert-list li,
      .award-list li {
        margin: 8px 0;
      }

      .footer {
        padding: 20px 0 0;
        color: #ffffff;
        text-align: center;
        font-size: 0.95rem;
      }

      .fade-up {
        animation: fadeUp 0.7s ease both;
      }

      .delay-1 {
        animation-delay: 0.08s;
      }

      .delay-2 {
        animation-delay: 0.16s;
      }

      .delay-3 {
        animation-delay: 0.24s;
      }

      .delay-4 {
        animation-delay: 0.32s;
      }

      .delay-5 {
        animation-delay: 0.4s;
      }

      @keyframes fadeUp {
        from {
          opacity: 0;
          transform: translateY(18px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      @media (max-width: 960px) {
        .hero,
        .project-grid,
        .award-grid,
        .edu-grid,
        .cert-grid,
        .volunteer-grid,
        .skills-grid {
          grid-template-columns: 1fr;
        }

        .topbar,
        .section-title {
          flex-direction: column;
          align-items: flex-start;
        }

        .nav-links {
          justify-content: flex-start;
        }
      }

      @media (max-width: 720px) {
        .shell {
          width: 100%;
          padding: 10px 12px 56px;
        }

        .topbar {
          top: 8px;
          padding: 10px 12px;
          gap: 10px;
          border-radius: 16px;
          flex-direction: row;
          align-items: center;
        }

        .brand-copy {
          display: block;
        }

        .brand-copy strong {
          font-size: 0.88rem;
          line-height: 1.1;
        }

        .brand-copy span {
          font-size: 0.78rem;
          line-height: 1.1;
        }

        .brand-mark {
          width: 42px;
          height: 42px;
          border-radius: 10px;
        }

        .nav {
          width: auto;
          overflow: visible;
          justify-content: flex-end;
          position: relative;
        }

        .nav-links {
          display: none;
        }

        .topbar.menu-open .nav-links {
          display: grid;
          gap: 8px;
          position: absolute;
          right: 0;
          top: 38px;
          min-width: 180px;
          padding: 10px;
          border-radius: 14px;
          border: none;
          background: rgba(0, 0, 0, 0.34);
          backdrop-filter: blur(20px) saturate(135%);
          z-index: 30;
        }

        .topbar.menu-open .nav-links a {
          display: block;
          white-space: nowrap;
          padding: 8px 10px;
          font-size: 0.88rem;
        }

        .nav-mobile-mark {
          display: inline-flex;
          align-items: center;
          justify-content: center;
          width: 42px;
          height: 30px;
          border-radius: 999px;
          border: 1px solid var(--glass-border);
          background: var(--glass-bg-soft);
          position: relative;
          cursor: pointer;
        }

        .nav-mobile-mark::before,
        .nav-mobile-mark::after {
          content: "";
          position: absolute;
          left: 11px;
          width: 18px;
          height: 2px;
          border-radius: 999px;
          background: #ffffff;
        }

        .nav-mobile-mark::before {
          top: 9px;
          box-shadow: 0 5px 0 #ffffff;
        }

        .nav-mobile-mark::after {
          top: 19px;
        }

        .hero-main,
        .section-card,
        .hero-side {
          padding: 20px;
        }

        .hero-main {
          min-height: 100vh;
          padding: 20px;
          text-align: left;
          align-items: flex-start;
        }

        .hero-main#about {
          min-height: calc(100svh - 48px);
          padding: 72px 18px 44px;
          border: 0;
          border-radius: 0;
          background: transparent;
          box-shadow: none;
          gap: 0;
          position: relative;
        }

        .hero-main#about::before {
          content: "";
          position: absolute;
          top: 18px;
          left: 18px;
          font-size: 0.72rem;
          letter-spacing: 0.24em;
          color: #ffffff;
        }

        .hero-main#about h1 {
          max-width: 13ch;
          margin: 0;
          font-size: clamp(2.35rem, 12vw, 3.45rem);
          line-height: 1.07;
          letter-spacing: -0.025em;
          text-wrap: balance;
          text-shadow: 0 0 24px rgba(255, 255, 255, 0.2);
          order: 1;
        }

        .hero-main#about .hero-lead,
        .hero-main#about .section-copy {
          max-width: 34ch;
          margin-left: 0;
          margin-right: 0;
        }

        .hero-main#about .hero-lead {
          margin-top: 14px;
          max-width: 34ch;
          font-size: 0.99rem;
          line-height: 1.74;
          color: #ffffff;
          order: 2;
        }

        .hero-main#about .hero-name {
          margin-top: 26px;
          margin-bottom: 10px;
          padding: 0;
          border-radius: 0;
          border: 0;
          background: transparent;
          font-size: 0.84rem;
          color: #ffffff;
          position: static;
          align-self: flex-start;
          text-align: left;
          order: 4;
        }

        .hero-main#about .tag-row {
          width: 100%;
          display: flex;
          flex-wrap: wrap;
          margin-top: 22px;
          margin-bottom: 0;
          padding-top: 0;
          gap: 6px 12px;
          order: 5;
        }

        .hero-main#about .tag {
          width: auto;
          text-align: left;
          padding: 7px 11px;
          border-radius: 999px;
          border: none;
          background: rgba(255, 255, 255, 0.12);
          color: #ffffff;
          font-size: 0.84rem;
          line-height: 1.15;
          font-weight: 600;
          opacity: 0.95;
        }

        .hero-main#about .tag::before {
          content: none;
        }

        .hero-main#about .section-copy {
          margin-top: 18px;
          font-size: 0.93rem;
          line-height: 1.68;
          color: #ffffff;
          order: 3;
          text-align: left;
        }

        .section-title h2 {
          font-size: 1.18rem;
          margin-bottom: 8px;
        }

        .section-copy {
          font-size: 0.95rem;
          line-height: 1.65;
        }

        .reveal-section {
          opacity: 0;
          transform: translateY(34px) scale(0.985);
          transition:
            opacity 0.7s ease,
            transform 0.7s cubic-bezier(0.2, 0.75, 0.2, 1);
        }

        .reveal-section.is-visible {
          opacity: 1;
          transform: translateY(0) scale(1);
        }

        body.about-animated .hero-main#about h1 {
          animation: mobileTitleRise 0.85s cubic-bezier(0.2, 0.8, 0.2, 1) both;
        }

        body.about-animated .hero-main#about .hero-lead {
          animation: mobileContentRise 0.85s cubic-bezier(0.2, 0.8, 0.2, 1) both;
          animation-delay: 0.12s;
        }

        body.about-animated .hero-main#about .hero-name {
          animation: mobileContentRise 0.8s ease both;
          animation-delay: 0.2s;
        }

        body.about-animated .hero-main#about .tag {
          animation: mobileChipRise 0.6s ease both;
        }

        body.about-animated .hero-main#about .tag:nth-child(1) { animation-delay: 0.24s; }
        body.about-animated .hero-main#about .tag:nth-child(2) { animation-delay: 0.3s; }
        body.about-animated .hero-main#about .tag:nth-child(3) { animation-delay: 0.36s; }
        body.about-animated .hero-main#about .tag:nth-child(4) { animation-delay: 0.42s; }
        body.about-animated .hero-main#about .tag:nth-child(5) { animation-delay: 0.48s; }
        body.about-animated .hero-main#about .tag:nth-child(6) { animation-delay: 0.54s; }

        body.about-animated .hero-main#about .section-copy {
          animation: mobileContentRise 0.85s ease both;
          animation-delay: 0.62s;
        }

        @keyframes mobileTitleRise {
          from {
            opacity: 0.2;
            transform: translateY(16px);
          }
          to {
            opacity: 1;
            transform: translateY(0);
          }
        }

        @keyframes mobileContentRise {
          from {
            opacity: 0;
            transform: translateY(14px);
          }
          to {
            opacity: 1;
            transform: translateY(0);
          }
        }

        @keyframes mobileChipRise {
          from {
            opacity: 0;
            transform: translateY(10px) scale(0.98);
          }
          to {
            opacity: 1;
            transform: translateY(0) scale(1);
          }
        }

        .hero-side {
          padding: 0 20px 20px;
          margin-top: 72px;
        }

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

        .contact-item {
          flex-direction: column;
          align-items: flex-start;
        }

        .contact-item span:last-child {
          text-align: left;
        }
      }

      @media (prefers-color-scheme: light) {
        :root {
          --bg: #f5f7fb;
          --bg-soft: #ffffff;
          --panel: rgba(255, 255, 255, 0.9);
          --panel-strong: rgba(255, 255, 255, 0.96);
          --text: #121821;
          --muted: #2b3441;
          --line: rgba(18, 24, 33, 0.2);
          --accent: #121821;
          --accent-2: #121821;
          --accent-3: #121821;
          --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
          --glass-bg: rgba(255, 255, 255, 0.72);
          --glass-bg-soft: rgba(255, 255, 255, 0.62);
          --glass-border: rgba(18, 24, 33, 0.14);
        }

        body {
          background: var(--bg);
          color: var(--text);
        }

        .topbar {
          background: rgba(255, 255, 255, 0.32);
          box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
        }

        .hero-main#about {
          background: transparent;
          border: none;
          box-shadow: none;
        }

        .brand-mark {
          background: rgba(255, 255, 255, 0.95);
        }

        .brand-copy span,
        .hero-name,
        .hero-lead,
        .stat span,
        .mini-card p,
        .section-copy,
        .contact-item,
        .timeline p,
        .project p,
        .skill-group li,
        .cert-list li,
        .award-list li,
        .edu-item p,
        .meta,
        .footer,
        .contact-item span:last-child {
          color: #121821;
        }

        .sections > section,
        .contact-item {
          border-color: rgba(18, 24, 33, 0.18);
        }

        .timeline-item,
        .project,
        .award,
        .edu-item,
        .cert-item,
        .skill-group,
        .volunteer-item {
          background: rgba(18, 24, 33, 0.06);
        }

        .nav-links a {
          color: #121821;
          background: rgba(18, 24, 33, 0.08);
        }

        .nav-links a:hover,
        .nav-links a.active {
          color: #121821;
          background: rgba(18, 24, 33, 0.14);
        }

        .topbar.menu-open .nav-links {
          background: rgba(255, 255, 255, 0.6);
          box-shadow: 0 10px 22px rgba(15, 23, 42, 0.08);
        }

        .nav-mobile-mark {
          border-color: rgba(18, 24, 33, 0.2);
          background: rgba(18, 24, 33, 0.06);
        }

        .nav-mobile-mark::before,
        .nav-mobile-mark::after {
          background: #121821;
        }

        .nav-mobile-mark::before {
          box-shadow: 0 5px 0 #121821;
        }

        .tag,
        .chip,
        .hero-main#about .tag {
          color: #121821;
          background: rgba(18, 24, 33, 0.1);
        }

        .hero-main#about .section-copy,
        .hero-main#about .hero-lead,
        .hero-main#about .hero-name,
        .hero-main#about h1 {
          color: #121821;
        }
      }