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

      :root {
        --bg-color: #ffffff;
        --bg-color-rgb: 255, 255, 255;
        --text-color: #000000;
        --secondary-text: #9ca3af;
        --accent-color: #3b82f6;
        --border-color: #e5e5e5;
        --card-bg: #f5f5f5;
        --hover-bg: #f0f0f0;
        --card-category-bg: #eef3fc;
        --card-category-text: #4f7d9b;
        --card-title: #1e293b;
        --card-description: #475569;
        --tech-tag-bg: #e9eef3;
        --card-image-bg: linear-gradient(135deg, #f8fafc, #eef2f6);
      }

      .dark {
        --bg-color: #000000;
        --bg-color-rgb: 0, 0, 0;
        --text-color: #ffffff;
        --secondary-text: #9ca3af;
        --accent-color: #60a5fa;
        --border-color: #333333;
        --card-bg: #1a1a1a;
        --hover-bg: #2a2a2a;
        --card-category-bg: #1e293b;
        --card-category-text: #60a5fa;
        --card-title: #ffffff;
        --card-description: #9ca3af;
        --tech-tag-bg: #1e293b;
        --card-image-bg: linear-gradient(135deg, #1e293b, #0f172a);
      }

      /* 暗色模式阴影反转 - 黑色阴影适配深色背景 */
      html.dark .hero-image-main {
        box-shadow: 0 20px 60px rgba(255, 255, 255, 0.05);
      }

      html.dark .hero-image-wrapper:hover .hero-image-main {
        box-shadow: 0 30px 80px rgba(255, 255, 255, 0.08);
      }

      html {
        scroll-behavior: smooth;
      }

      body {
        background-color: var(--bg-color);
        color: var(--text-color);
        font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        transition: background-color 0.3s ease, color 0.3s ease;
        min-height: 100vh;
        line-height: 1.6;
        position: relative;
        padding-bottom: 0;
      }

      .fade-in-up {
        opacity: 0;
        filter: blur(12px);
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                    filter 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                    transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
      }

      .fade-in-up.visible {
        opacity: 1;
        filter: blur(0);
        transform: translateY(0);
      }

      .stagger-1 { transition-delay: 0.1s; }
      .stagger-2 { transition-delay: 0.2s; }
      .stagger-3 { transition-delay: 0.3s; }
      .stagger-4 { transition-delay: 0.4s; }
      .stagger-5 { transition-delay: 0.5s; }
      .stagger-6 { transition-delay: 0.6s; }

      .navbar-container {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        display: flex;
        justify-content: center;
        padding-top: 4px;
        transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1), padding 0.7s cubic-bezier(0.25, 0.1, 0.25, 1);
        animation: navbarSlideDown 0.8s cubic-bezier(0.25, 0.1, 0.25, 1) both;
      }

      @keyframes navbarSlideDown {
        0% { opacity: 0; transform: translateY(-100%); }
        100% { opacity: 1; transform: translateY(0); }
      }

      .navbar-container::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(
          to bottom,
          rgba(var(--bg-color-rgb, 255, 255, 255), 1) 0%,
          rgba(var(--bg-color-rgb, 255, 255, 255), 0.95) 10%,
          rgba(var(--bg-color-rgb, 255, 255, 255), 0.8) 25%,
          rgba(var(--bg-color-rgb, 255, 255, 255), 0.55) 45%,
          rgba(var(--bg-color-rgb, 255, 255, 255), 0.25) 65%,
          rgba(var(--bg-color-rgb, 255, 255, 255), 0.08) 82%,
          rgba(var(--bg-color-rgb, 255, 255, 255), 0) 100%
        );
        backdrop-filter: blur(0px);
        -webkit-backdrop-filter: blur(0px);
        pointer-events: none;
        z-index: -1;
      }

      .navbar-container::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 100%;
        background: var(--bg-color);
        opacity: 0;
        pointer-events: none;
        z-index: -2;
      }

      .blur-layer {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 150%;
        pointer-events: none;
        z-index: -3;
      }

      .blur-layer-1 {
        background: transparent;
        backdrop-filter: blur(40px);
        -webkit-backdrop-filter: blur(40px);
        mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.6) 20%, rgba(0,0,0,0.1) 50%, transparent 70%);
        -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.6) 20%, rgba(0,0,0,0.1) 50%, transparent 70%);
      }

      .dark .navbar-container::before {
        background: linear-gradient(
          to bottom,
          rgba(0, 0, 0, 1) 0%,
          rgba(0, 0, 0, 0.95) 10%,
          rgba(0, 0, 0, 0.8) 25%,
          rgba(0, 0, 0, 0.55) 45%,
          rgba(0, 0, 0, 0.25) 65%,
          rgba(0, 0, 0, 0.08) 82%,
          rgba(0, 0, 0, 0) 100%
        );
      }

      .dark .blur-layer-1 {
        mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.6) 20%, rgba(0,0,0,0.1) 50%, transparent 70%);
        -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.6) 20%, rgba(0,0,0,0.1) 50%, transparent 70%);
      }

      .navbar-container.scrolled {
        padding-top: 6px;
      }

      .navbar-container.hidden {
        transform: translateY(-100%);
      }

      .navbar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        transition: all 0.7s cubic-bezier(0.25, 0.1, 0.25, 1);
        background: transparent;
        border: transparent;
        box-shadow: none;
        border-radius: 0;
        padding: 2px 0;
        width: 96vw;
      }

      .navbar-container.scrolled .navbar {
        width: 92vw;
        max-width: none;
        background: rgba(255, 255, 255, 0.75);
        backdrop-filter: saturate(180%) blur(20px);
        -webkit-backdrop-filter: saturate(180%) blur(20px);
        border: 1px solid rgba(0, 0, 0, 0.1);
        box-shadow:
          0 4px 30px rgba(0, 0, 0, 0.1),
          0 0 40px rgba(255, 255, 255, 0.1) inset;
        border-radius: 16px;
        padding: 6px 20px;
        gap: 6px;
      }

      .dark .navbar-container.scrolled .navbar {
        background: rgba(0, 0, 0, 0.75);
        border-color: rgba(255, 255, 255, 0.1);
        box-shadow:
          0 4px 30px rgba(0, 0, 0, 0.3),
          0 0 40px rgba(0, 0, 0, 0.2) inset;
      }

      @media (min-width: 768px) {
        .navbar-container.scrolled .navbar {
          width: auto;
          gap: 36px;
          border-radius: 9999px;
          padding: 10px 36px;
        }
      }

      .logo {
        font-weight: 900;
        text-transform: uppercase;
        letter-spacing: -0.02em;
        color: var(--text-color);
        cursor: pointer;
        transition: all 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
        line-height: 1;
        white-space: nowrap;
        text-shadow: 0 0 20px rgba(0, 0, 0, 0);
        display: flex;
        align-items: center;
        gap: 6px;
      }

      .logo-svg {
        width: 24px;
        height: 24px;
        flex-shrink: 0;
      }

      .navbar-container:not(.scrolled) .logo {
        font-size: clamp(1rem, 2.5vw, 2.5rem);
        text-shadow: 0 0 30px rgba(0, 0, 0, 0.1);
      }

      .navbar-container.scrolled .logo {
        font-size: 16px;
        text-shadow: none;
      }

      .nav-logo-img {
        height: 44px;
        width: auto;
        cursor: pointer;
        transition: height 0.3s ease;
        margin-left: -12px;
      }

      .navbar-container:not(.scrolled) .nav-logo-img {
        height: clamp(36px, 4.5vw, 48px);
        margin-left: -14px;
      }

      .navbar-container.scrolled .nav-logo-img {
        height: 36px;
        margin-left: -8px;
      }

      @media (min-width: 768px) {
        .navbar-container.scrolled .logo {
          font-size: 24px;
        }
        .navbar-container.scrolled .nav-logo-img {
          height: 40px;
        }
      }

      /* 主题 LOGO 切换 - 默认亮色模式显示暗色 LOGO */
      .light-logo { display: none; }
      .dark-logo { display: block; }

      /* 暗色模式下显示亮色 LOGO */
      html.dark .light-logo { display: block; }
      html.dark .dark-logo { display: none; }

      .logo span {
        display: none;
      }

      @media (min-width: 640px) {
        .logo span {
          display: inline;
        }
      }

      .nav-links {
        display: flex;
        align-items: center;
        transition: all 0.7s;
        overflow-x: auto;
        -ms-overflow-style: none;
        scrollbar-width: none;
      }

      .nav-links::-webkit-scrollbar {
        display: none;
      }

      .navbar-container:not(.scrolled) .nav-links {
        gap: 8px;
      }

      @media (min-width: 768px) {
        .navbar-container:not(.scrolled) .nav-links {
          gap: 36px;
        }
      }

      .navbar-container:not(.scrolled) .nav-link {
        font-size: 16px;
      }

      @media (min-width: 768px) {
        .navbar-container:not(.scrolled) .nav-link {
          font-size: 17px;
        }
      }

      .navbar-container:not(.scrolled) .control-btn {
        width: 34px;
        height: 34px;
      }

      @media (min-width: 768px) {
        .navbar-container:not(.scrolled) .control-btn {
          width: 38px;
          height: 38px;
        }
      }

      .navbar-container:not(.scrolled) .control-btn svg {
        width: 19px;
        height: 19px;
      }

      @media (min-width: 768px) {
        .navbar-container:not(.scrolled) .control-btn svg {
          width: 21px;
          height: 21px;
        }
      }

      .navbar-container:not(.scrolled) .control-btn span {
        font-size: 16px;
      }

      @media (min-width: 768px) {
        .navbar-container:not(.scrolled) .control-btn span {
          font-size: 20px;
        }
      }

      .navbar-container.scrolled .nav-links {
        gap: 4px;
      }

      @media (min-width: 768px) {
        .navbar-container.scrolled .nav-links {
          gap: 24px;
        }
      }

      .mask-gradient {
        -webkit-mask-image: linear-gradient(to right, transparent, black 10px, black calc(100% - 20px), transparent);
        mask-image: linear-gradient(to right, transparent, black 10px, black calc(100% - 20px), transparent);
      }

      .nav-link {
        position: relative;
        font-size: 14px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: #9ca3af;
        background: none;
        border: none;
        cursor: pointer;
        padding: 2px 0;
        white-space: nowrap;
        transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
        transform: translateY(0);
      }

      .nav-link:hover {
        color: var(--text-color);
        transform: translateY(-2px);
      }

      .nav-link.active {
        color: var(--text-color);
        transform: translateY(-2px);
      }

      .nav-link::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(90deg, var(--text-color), var(--text-color));
        transform: scaleX(0);
        transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
      }

      @media (min-width: 768px) {
        .nav-link::after {
          height: 2px;
          bottom: -4px;
        }
      }

      .nav-link:hover::after,
      .nav-link.active::after {
        transform: scaleX(1);
      }

      .nav-divider {
        width: 1px;
        height: 18px;
        background-color: var(--border-color);
        margin: 0 4px;
        flex-shrink: 0;
      }

      @media (min-width: 768px) {
        .nav-divider {
          height: 24px;
          margin: 0 6px;
        }
      }

      .nav-controls {
        display: flex;
        align-items: center;
        gap: 4px;
        flex-shrink: 0;
      }

      @media (min-width: 768px) {
        .nav-controls {
          gap: 8px;
        }
      }

      .control-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
        border: none;
        background: transparent;
        color: var(--text-color);
        border-radius: 9999px;
        cursor: pointer;
        transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
        padding: 2px;
      }

      @media (min-width: 768px) {
        .control-btn {
          width: 32px;
          height: 32px;
          padding: 4px;
        }
      }

      .control-btn:hover {
        background-color: rgba(0, 0, 0, 0.05);
        transform: scale(1.1);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      }

      .dark .control-btn:hover {
        background-color: rgba(255, 255, 255, 0.1);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      }

      .control-btn svg {
        width: 16px;
        height: 16px;
        transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
      }

      @media (min-width: 768px) {
        .control-btn svg {
          width: 18px;
          height: 18px;
        }
      }

      .control-btn:hover svg {
        transform: rotate(15deg);
      }

      .control-btn span {
        font-size: 13px;
        font-weight: 700;
      }

      @media (min-width: 768px) {
        .control-btn span {
          font-size: 18px;
        }
      }

      .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 100px 24px 260px;
      }

      .hero {
        position: relative;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 100vh;
        padding: 0 6vw 0 8vw;
        max-width: 1400px;
        margin: 0 auto;
      }

      /* Hero 入场动画 */
      @keyframes heroTitleIn {
        0% { opacity: 0; transform: translateY(40px); filter: blur(15px); }
        100% { opacity: 1; transform: translateY(0); filter: blur(0); }
      }
      @keyframes heroDescIn {
        0% { opacity: 0; transform: translateY(25px); filter: blur(8px); }
        100% { opacity: 1; transform: translateY(0); filter: blur(0); }
      }
      @keyframes cursorBlink {
        0%, 49% { opacity: 1; }
        50%, 100% { opacity: 0; }
      }
      .typewriter-tilt {
        display: inline;
      }
      .typewriter-cursor {
        display: inline-block !important;
        width: 3px;
        height: 1em;
        background: currentColor;
        margin-left: 8px;
        animation: cursorBlink 0.8s step-end infinite;
        transform: none !important;
        transform-style: preserve-3d;
        vertical-align: middle;
        position: relative;
        top: -0.05em;
      }
      @keyframes heroParticlesIn {
        0% { opacity: 0; transform: translate(-50%, -50%) scale(0.82); filter: blur(24px); }
        100% { opacity: 0.62; transform: translate(-50%, -50%) scale(1); filter: blur(0); }
      }

      .hero h1 {
        font-size: clamp(3rem, 7vw, 5.5rem);
        font-weight: 900;
        margin-bottom: 20px;
        letter-spacing: -0.03em;
        line-height: 1.1;
        position: relative;
        display: inline-flex;
        align-items: baseline;
        transition: transform 0.15s ease-out;
        will-change: transform;
        text-shadow: 0 2px 40px rgba(0, 0, 0, 0.12);
      }
      .hero p {
        animation: heroDescIn 0.9s cubic-bezier(0.25, 0.1, 0.25, 1) 0.5s both;
      }
      .hero-content {
        position: relative;
        z-index: 2;
        max-width: 500px;
        display: flex;
        flex-direction: column;
        gap: 20px;
      }

      @keyframes globeEntry {
        0% { opacity: 0; transform: translateY(-50%) scale(0.75); }
        60% { opacity: 1; }
        100% { opacity: 1; transform: translateY(-50%) scale(1); }
      }
      @keyframes globeEntryMobile {
        0% { opacity: 0; transform: scale(0.75); }
        60% { opacity: 1; }
        100% { opacity: 1; transform: scale(1); }
      }
      .hero-globe {
        position: absolute;
        right: 2vw;
        top: 50%;
        transform: translateY(-50%) scale(0.75);
        width: 46rem;
        max-width: 55vw;
        aspect-ratio: 1;
        z-index: 1;
        pointer-events: none;
        opacity: 0;
        animation: globeEntry 1.6s cubic-bezier(0.22, 1, 0.36, 1) 0.3s forwards;
        -webkit-mask-image: linear-gradient(to right, transparent 0%, transparent 10%, rgba(0,0,0,0.3) 22%, rgba(0,0,0,0.7) 35%, black 50%);
        mask-image: linear-gradient(to right, transparent 0%, transparent 10%, rgba(0,0,0,0.3) 22%, rgba(0,0,0,0.7) 35%, black 50%);
      }
      .hero-globe canvas {
        display: block;
        width: 100%;
        height: 100%;
      }

      .hero h1 {
        font-size: clamp(3rem, 7vw, 5.5rem);
        font-weight: 900;
        margin-bottom: 20px;
        letter-spacing: -0.03em;
        line-height: 1.1;
        position: relative;
        transition: transform 0.15s ease-out;
        will-change: transform;
        text-shadow: 0 2px 40px rgba(0, 0, 0, 0.12);
      }

      .online-dot {
        display: inline-block;
        width: 8px;
        height: 8px;
        background: #22c55e;
        border-radius: 50%;
        vertical-align: middle;
        margin-left: 8px;
        box-shadow: 0 0 6px #22c55e;
      }

      /* 文字 + 按钮内联嵌合 — 按钮自然流入第二行末尾留白 */
      .hero-pair {
        font-size: clamp(1.05rem, 1.6vw, 1.25rem);
        color: var(--secondary-text);
        line-height: 2.4;
        margin: 0;
        max-width: 560px;
        text-align: left;
        font-style: normal;
        opacity: 0.88;
        animation: heroDescIn 0.9s cubic-bezier(0.25, 0.1, 0.25, 1) 0.5s both;
        transform: rotate(-0.6deg);
        transition: opacity 0.4s;
      }
      .hero-pair:hover {
        opacity: 1;
      }

      /* 胶囊按钮 — inline-flow 嵌入文字末尾 */
      .hero-btn {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 20px;
        border-radius: 9999px;
        font-size: 0.8em;
        font-weight: 600;
        letter-spacing: 0.3px;
        text-decoration: none;
        color: var(--text-color);
        background: transparent;
        border: 1px solid var(--text-color);
        transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        white-space: nowrap;
        vertical-align: middle;
        margin-left: 6px;
        line-height: 1.4;
        will-change: transform;
        transform-origin: center;
      }
      .hero-btn svg {
        transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
      }
      .hero-btn:hover {
        background: var(--text-color);
        color: var(--bg-color);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
      }
      .hero-btn:hover svg {
        transform: translateX(3px);
      }

      .hero-image {
        flex: 1;
        max-width: 500px;
        display: flex;
        justify-content: center;
        align-items: center;
      }

      .hero-image-wrapper {
        position: relative;
        width: 400px;
        height: 400px;
      }

      .hero-image-main {
        width: 100%;
        height: 100%;
        border-radius: 24px;
        object-fit: cover;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
        transition: all 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
      }

      .hero-image-wrapper:hover .hero-image-main {
        transform: scale(1.02);
        box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
      }

      .hero-image-decoration {
        position: absolute;
        width: 120px;
        height: 120px;
        border-radius: 16px;
        background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        top: -20px;
        right: -20px;
        z-index: -1;
      }

      .hero-image-decoration-2 {
        position: absolute;
        width: 80px;
        height: 80px;
        border-radius: 50%;
        background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(16, 185, 129, 0.15));
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        bottom: 20px;
        left: -30px;
        z-index: -1;
      }

      .hero-logo {
        flex: 1;
        display: flex;
        justify-content: center;
        align-items: center;
        align-self: center;
      }

      .hero-logo img {
        max-width: 350px;
        width: 100%;
        height: auto;
      }

      .section {
        margin-bottom: 60px;
      }

      .portfolio-section {
        position: relative;
      }

      .portfolio-wrapper {
        position: relative;
      }

      .showcase-item {
        min-height: 100vh;
        display: flex;
        align-items: center;
        gap: 80px;
        max-width: 1400px;
        margin: 0 auto;
        padding: 100px 60px;
        perspective: 800px;
      }

      .showcase-item:nth-child(even) {
        flex-direction: row-reverse;
      }

      .showcase-content {
        flex: 1;
        max-width: 580px;
      }

      .showcase-image {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
      }

      .showcase-image img {
        width: 100%;
        max-width: 520px;
        height: auto;
        border-radius: 2rem;
        display: block;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
        transition: transform 0.15s ease-out, box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
      }

      .showcase-item:hover .showcase-image img {
        transform: translateY(-8px);
        box-shadow: 0 30px 80px rgba(0, 0, 0, 0.18);
      }

      .portfolio-wrapper .card-category {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        font-size: 0.75rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 1.5px;
        color: var(--card-category-text, #4f7d9b);
        background: var(--card-category-bg, #eef3fc);
        padding: 0.3rem 0.9rem;
        border-radius: 30px;
        margin-bottom: 1.2rem;
      }

      .portfolio-wrapper .card-title {
        font-size: 2.4rem;
        font-weight: 800;
        color: var(--card-title, #1e293b);
        letter-spacing: -0.5px;
        margin-bottom: 1rem;
        line-height: 1.2;
      }

      .portfolio-wrapper .card-description {
        color: var(--card-description, #475569);
        line-height: 1.7;
        margin-bottom: 1.5rem;
        font-size: 1.05rem;
      }

      .portfolio-wrapper .tech-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.6rem;
        margin-bottom: 1.5rem;
      }

      .portfolio-wrapper .tech-tags span {
        background: var(--tech-tag-bg, #e9eef3);
        padding: 0.25rem 0.9rem;
        border-radius: 30px;
        font-size: 0.75rem;
        font-weight: 500;
        color: #2c3e66;
      }

      .portfolio-wrapper .card-link {
        text-decoration: none;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        color: #2c7da0;
        border-bottom: 2px solid transparent;
        transition: 0.2s;
        font-size: 1rem;
      }

      .portfolio-wrapper .card-link:hover {
        border-bottom-color: #2c7da0;
        gap: 0.7rem;
      }

      .portfolio-wrapper .card-link.disabled {
        color: #999;
        cursor: not-allowed;
        pointer-events: none;
      }

      @media (max-width: 900px) {
        .showcase-item {
          flex-direction: column !important;
          gap: 40px;
          padding: 60px 24px;
          min-height: auto;
        }
        .showcase-content {
          max-width: 100%;
          text-align: center;
        }
        .showcase-image img {
          max-width: 350px;
        }
        .portfolio-wrapper .card-title {
          font-size: 1.8rem;
        }
        .portfolio-wrapper .tech-tags {
          justify-content: center;
        }
      }

      .section-title {
        font-size: 14px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.1em;
        color: var(--secondary-text);
        margin-bottom: 24px;
        padding-bottom: 12px;
        border-bottom: 1px solid var(--border-color);
      }

      #education {
        padding-bottom: 200px;
        margin-top: 100px;
      }

      .card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 20px;
      }

      .card {
        background-color: var(--card-bg);
        border-radius: 16px;
        padding: 24px;
        transition: all 0.2s ease;
      }

      .card:hover {
        background-color: var(--hover-bg);
        transform: translateY(-2px);
      }

      .card h3 {
        font-size: 18px;
        font-weight: 600;
        margin-bottom: 8px;
      }

      .card p {
        font-size: 14px;
        color: var(--secondary-text);
      }

      .card .tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 16px;
      }

      .tag {
        font-size: 12px;
        padding: 4px 10px;
        background-color: var(--border-color);
        border-radius: 6px;
        color: var(--secondary-text);
      }

      .about-list {
        list-style: none;
      }

      .about-list li {
        display: flex;
        align-items: flex-start;
        padding: 16px 0;
        border-bottom: 1px solid var(--border-color);
      }

      .about-list li:last-child {
        border-bottom: none;
      }

      .about-list .label {
        font-weight: 600;
        min-width: 120px;
        color: var(--secondary-text);
        font-size: 14px;
        text-transform: uppercase;
        letter-spacing: 0.05em;
      }

      .about-list .value {
        flex: 1;
        font-size: 16px;
      }

      .friend-link {
        color: var(--text-color);
        text-decoration: none;
        border-bottom: 1px solid var(--border-color);
        transition: border-color 0.2s, color 0.2s;
      }

      .friend-link:hover {
        color: var(--accent-color);
        border-bottom-color: var(--accent-color);
      }

      .friend-link svg {
        vertical-align: middle;
        margin-left: 2px;
        opacity: 0.5;
        transition: opacity 0.2s;
      }

      .friend-link:hover svg {
        opacity: 1;
      }

      .social-links {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 16px;
      }

      .social-link {
        display: flex;
        align-items: center;
        padding: 16px 20px;
        background-color: var(--card-bg);
        border-radius: 12px;
        text-decoration: none;
        color: var(--text-color);
        transition: all 0.2s ease;
      }

      .social-link:hover {
        background-color: var(--hover-bg);
        transform: translateX(4px);
      }

      .social-link .icon {
        margin-right: 12px;
        color: var(--secondary-text);
      }

      .social-link:hover .icon {
        color: var(--accent-color);
      }

      .bullet-point {
        display: inline-block;
        width: 8px;
        height: 8px;
        background-color: var(--accent-color);
        border-radius: 50%;
        margin-right: 12px;
      }

      .link-item {
        display: flex;
        align-items: center;
        padding: 16px 20px;
        margin: 8px 0;
        background-color: var(--card-bg);
        border-radius: 12px;
        text-decoration: none;
        color: var(--text-color);
        transition: all 0.2s ease;
      }

      .link-item:hover {
        background-color: var(--hover-bg);
        transform: translateX(4px);
      }

      .link-item .arrow {
        margin-left: auto;
        color: var(--secondary-text);
        opacity: 0;
        transition: opacity 0.2s;
      }

      .link-item:hover .arrow {
        opacity: 1;
      }

      .footer {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        background: #000;
        color: #999;
        font-size: 14px;
      }

      .footer-top {
        display: flex;
        justify-content: space-between;
        max-width: 1200px;
        margin: 0 auto;
        padding: 60px 40px 40px;
        gap: 60px;
      }

      .footer-column h4 {
        color: #fff;
        font-size: 20px;
        font-weight: 700;
        margin: 0 0 12px;
        letter-spacing: 1px;
      }

      .footer-column h5 {
        color: #fff;
        font-size: 13px;
        font-weight: 600;
        margin: 0 0 16px;
        text-transform: uppercase;
        letter-spacing: 1px;
      }

      .footer-tagline {
        color: var(--secondary-text);
        font-size: 13px;
        margin: 0;
      }

      .footer-brand-image {
        width: 100px;
        margin-top: 16px;
        margin-left: auto;
        margin-right: auto;
        display: block;
        opacity: 0.7;
      }

      .footer-column a {
        display: block;
        color: #999;
        text-decoration: none;
        font-size: 14px;
        line-height: 2;
        transition: color 0.2s ease;
      }

      .footer-column a:hover {
        color: #fff;
      }

      .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
        padding: 24px 40px;
        border-top: 1px solid #000000;
        background: transparent;
      }

      html.dark .footer-bottom {
        border-top: 1px solid #000000;
      }

      .footer-copyright {
        color: var(--secondary-text);
        font-size: 13px;
        margin: 0;
      }

      .footer-social {
        display: flex;
        gap: 20px;
      }

      .footer-social a {
        color: var(--secondary-text);
        transition: color 0.2s ease;
      }

      .footer-social a:hover {
        color: #fff;
      }

      @media (max-width: 768px) {
        .footer-top {
          flex-direction: column;
          padding: 40px 24px 24px;
          gap: 32px;
        }

        .footer-bottom {
          flex-direction: column;
          gap: 16px;
          padding: 24px;
          text-align: center;
        }
      }

      .back-to-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 56px;
        height: 56px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        opacity: 0;
        visibility: hidden;
        transform: scale(0.8);
        transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
        z-index: 999;
      }

      .back-to-top.visible {
        opacity: 1;
        visibility: visible;
        transform: scale(1);
      }

      .back-to-top.hidden {
        opacity: 0;
        visibility: hidden;
        transform: scale(0.8);
      }

      .back-to-top:hover {
        transform: scale(1.1);
      }

      .back-to-top-circle {
        position: absolute;
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.8);
        backdrop-filter: saturate(180%) blur(20px);
        -webkit-backdrop-filter: saturate(180%) blur(20px);
        box-shadow:
          0 4px 30px rgba(0, 0, 0, 0.1),
          0 0 40px rgba(255, 255, 255, 0.5) inset;
        border: 1px solid rgba(0, 0, 0, 0.1);
        transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
      }

      .dark .back-to-top-circle {
        background: rgba(0, 0, 0, 0.8);
        border-color: rgba(255, 255, 255, 0.1);
        box-shadow:
          0 4px 30px rgba(0, 0, 0, 0.3),
          0 0 40px rgba(0, 0, 0, 0.2) inset;
      }

      .back-to-top:hover .back-to-top-circle {
        box-shadow:
          0 6px 35px rgba(0, 0, 0, 0.2),
          0 0 50px rgba(255, 255, 255, 0.6) inset;
      }

      .dark .back-to-top:hover .back-to-top-circle {
        box-shadow:
          0 6px 35px rgba(0, 0, 0, 0.4),
          0 0 50px rgba(0, 0, 0, 0.3) inset;
      }

      .back-to-top-progress {
        position: absolute;
        width: 100%;
        height: 100%;
        border-radius: 50%;
      }

      .back-to-top-progress svg {
        width: 100%;
        height: 100%;
        transform: rotate(-90deg);
      }

      .back-to-top-progress circle {
        fill: none;
        stroke-width: 2.5;
        stroke-linecap: round;
      }

      .back-to-top-progress .progress-bg {
        stroke: transparent;
      }

      .back-to-top-progress .progress-bar {
        stroke: var(--text-color);
        stroke-dasharray: 138.23;
        stroke-dashoffset: 138.23;
        transition: stroke-dashoffset 0.1s linear;
      }

      .back-to-top-arrow {
        position: relative;
        z-index: 1;
        color: var(--text-color);
        transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
      }

      .back-to-top:hover .back-to-top-arrow {
        transform: translateY(-2px);
      }

      @media (max-width: 768px) {
        .nav-links {
          display: none;
        }

        .hero {
          flex-direction: column;
          min-height: 100vh;
          text-align: center;
          padding-top: 60px;
          padding-bottom: 40px;
        }

        .hero-content {
          max-width: 100%;
          padding: 0 24px;
          margin-left: 0;
          margin-right: 0;
        }

        .hero-globe {
          position: relative;
          right: auto;
          top: auto;
          transform: none;
          width: 80vw;
          max-width: 320px;
          margin: 40px auto 0;
          animation: globeEntryMobile 1.6s cubic-bezier(0.22, 1, 0.36, 1) 0.3s forwards;
        }

        .hero h1 {
          font-size: 42px;
          justify-content: center;
        }

        .hero-pair {
          font-size: 14px;
          text-align: center;
          max-width: 100%;
          line-height: 2;
          transform: rotate(0);
        }

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

        .social-links {
          grid-template-columns: 1fr;
        }

        .about-list .label {
          min-width: 100px;
        }
      }

      @media (max-width: 640px) {
        .container {
          padding: 80px 16px 300px;
        }

        .hero {
          padding-top: 70px;
          min-height: 100vh;
        }

        .hero h1 {
          font-size: 32px;
        }

        .hero-pair {
          font-size: 13px;
          line-height: 1.9;
        }

        .hero-globe {
          width: 90vw;
          max-width: 280px;
        }
      }
      .donate-modal {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.8);
        z-index: 9999;
        justify-content: center;
        align-items: center;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
      }

      .donate-content {
        background: #1a1a1a;
        border-radius: 20px;
        padding: 40px;
        max-width: 400px;
        width: 90%;
        text-align: center;
        position: relative;
        border: 1px solid #333;
      }

      .donate-close {
        position: absolute;
        top: 15px;
        right: 20px;
        background: none;
        border: none;
        color: #666;
        font-size: 30px;
        cursor: pointer;
        line-height: 1;
      }

      .donate-close:hover {
        color: #fff;
      }

      .donate-content h3 {
        color: #fff;
        font-size: 20px;
        margin-bottom: 10px;
      }

      .donate-content p {
        color: #888;
        font-size: 14px;
        margin-bottom: 24px;
      }

      .donate-content img {
        width: 250px;
        height: 250px;
        border-radius: 12px;
        object-fit: cover;
      }

      .donate-options {
        display: flex;
        flex-direction: column;
        gap: 12px;
        margin-top: 8px;
      }

      .donate-option {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        padding: 14px 20px;
        background: #2a2a2a;
        border: 1px solid #444;
        border-radius: 12px;
        color: #fff;
        font-size: 15px;
        cursor: pointer;
        text-decoration: none;
        transition: background 0.2s, border-color 0.2s;
        font-family: inherit;
      }

      .donate-option:hover {
        background: #333;
        border-color: #666;
      }

      .donate-option-label {
        font-weight: 500;
      }

      .donate-badge {
        font-size: 11px;
        font-weight: 600;
        padding: 2px 8px;
        border-radius: 999px;
        background: #e26a3a;
        color: #fff;
        line-height: 1.5;
      }

      .donate-option-arrow {
        opacity: 0.5;
      }

      .donate-back-btn {
        display: inline-block;
        background: none;
        border: none;
        color: #888;
        font-size: 14px;
        cursor: pointer;
        padding: 0;
        margin-bottom: 16px;
        font-family: inherit;
        transition: color 0.2s;
      }

      .donate-back-btn:hover {
        color: #fff;
      }

      .donate-qr-label {
        color: #666 !important;
        font-size: 13px !important;
        margin-top: 12px !important;
        margin-bottom: 0 !important;
      }

      .copy-toast {
        position: fixed;
        left: 50%;
        bottom: 40px;
        transform: translate(-50%, 16px);
        max-width: calc(100% - 40px);
        padding: 12px 22px;
        border-radius: 999px;
        background: rgba(var(--bg-color-rgb), 0.82);
        border: 1px solid var(--border-color);
        color: var(--text-color);
        font-size: 14px;
        line-height: 1.5;
        text-align: center;
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        box-shadow: 0 10px 34px rgba(0, 0, 0, 0.14);
        opacity: 0;
        pointer-events: none;
        z-index: 10000;
        transition: opacity 0.28s ease, transform 0.28s ease;
      }

      .copy-toast.visible {
        opacity: 1;
        transform: translate(-50%, 0);
      }