:root {
            --bg: #faf7f4;
            --bg-warm: #f5efe8;
            --card-bg: #ffffff;
            --text-primary: #2c2419;
            --text-secondary: #5c5348;
            --text-tertiary: #8a7e6f;
            --accent: #c4946c;
            --accent-deep: #a0754f;
            --accent-light: #e8d5c4;
            --accent-glow: #f0dfcf;
            --gold: #b8936e;
            --gold-light: #d4b896;
            --border: #e8e0d8;
            --border-light: #f0ebe3;
            --shadow-sm: 0 1px 3px rgba(44, 36, 25, 0.06), 0 1px 2px rgba(44, 36, 25, 0.04);
            --shadow-md: 0 4px 16px rgba(44, 36, 25, 0.07), 0 2px 6px rgba(44, 36, 25, 0.04);
            --shadow-lg: 0 12px 32px rgba(44, 36, 25, 0.09), 0 4px 12px rgba(44, 36, 25, 0.05);
            --shadow-xl: 0 20px 48px rgba(44, 36, 25, 0.11), 0 8px 20px rgba(44, 36, 25, 0.06);
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --font-serif: 'Georgia', 'Noto Serif SC', 'STSong', 'Songti SC', 'SimSun', 'KaiTi', serif;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1080px;
            --about-card-max: 780px;
            --side-nav-right: 26px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            background-image:
                radial-gradient(ellipse at 15% 8%, rgba(196, 148, 108, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 78% 12%, rgba(180, 150, 120, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 60%, rgba(196, 148, 108, 0.03) 0%, transparent 60%),
                radial-gradient(ellipse at 25% 85%, rgba(180, 140, 110, 0.04) 0%, transparent 50%);
            background-attachment: fixed;
        }

        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: transparent;
        }
        ::-webkit-scrollbar-thumb {
            background: var(--accent-light);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

        /* ===== 右侧点状导航 ===== */
        .side-dot-nav {
            position: fixed;
            right: var(--side-nav-right);
            top: 50%;
            transform: translateY(-50%);
            z-index: 900;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0;
            padding: 10px 6px;
            background: rgba(250, 247, 244, 0.55);
            backdrop-filter: blur(12px) saturate(110%);
            -webkit-backdrop-filter: blur(12px) saturate(110%);
            border-radius: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .side-dot-nav:hover {
            background: rgba(250, 247, 244, 0.82);
            box-shadow: var(--shadow-lg);
        }
        .side-dot-nav .dot-link {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition);
            z-index: 1;
        }
        .side-dot-nav .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--border);
            border: 2px solid transparent;
            transition: var(--transition);
            position: relative;
            flex-shrink: 0;
        }
        .side-dot-nav .dot-link:hover .dot {
            background: var(--accent-light);
            border-color: var(--accent-light);
            transform: scale(1.5);
            box-shadow: 0 0 0 6px rgba(196, 148, 108, 0.15);
        }
        .side-dot-nav .dot-link.active .dot {
            background: var(--accent);
            border-color: var(--accent-deep);
            width: 12px;
            height: 12px;
            box-shadow: 0 0 0 8px rgba(196, 148, 108, 0.18);
            animation: dotPulse 2s ease-in-out infinite;
        }
        @keyframes dotPulse {
            0%,
            100% {
                box-shadow: 0 0 0 8px rgba(196, 148, 108, 0.18);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(196, 148, 108, 0.08);
            }
        }
        .side-dot-nav .dot-label {
            position: absolute;
            right: 46px;
            top: 50%;
            transform: translateY(-50%);
            white-space: nowrap;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--accent-deep);
            background: var(--card-bg);
            padding: 6px 14px;
            border-radius: 16px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
            transform: translateY(-50%) translateX(8px);
        }
        .side-dot-nav .dot-link:hover .dot-label {
            opacity: 1;
            transform: translateY(-50%) translateX(0);
        }
        .side-dot-nav .dot-link.active .dot-label {
            color: var(--accent-deep);
            background: var(--accent-glow);
            border-color: var(--accent-light);
        }
        /* 连接线 */
        .side-dot-nav::before {
            content: '';
            position: absolute;
            top: 18px;
            bottom: 18px;
            left: 50%;
            transform: translateX(-50%);
            width: 1px;
            background: linear-gradient(to bottom,
                    transparent 0%,
                    var(--border) 10%,
                    var(--border) 90%,
                    transparent 100%);
            border-radius: 1px;
            z-index: 0;
            pointer-events: none;
        }

        @media (max-width: 768px) {
            .side-dot-nav {
                right: 8px;
                padding: 8px 4px;
                border-radius: 22px;
                gap: 0;
            }
            .side-dot-nav .dot-link {
                width: 30px;
                height: 30px;
            }
            .side-dot-nav .dot {
                width: 7px;
                height: 7px;
            }
            .side-dot-nav .dot-link.active .dot {
                width: 9px;
                height: 9px;
                box-shadow: 0 0 0 5px rgba(196, 148, 108, 0.15);
            }
            .side-dot-nav .dot-label {
                display: none;
            }
            .side-dot-nav::before {
                top: 10px;
                bottom: 10px;
            }
            :root {
                --side-nav-right: 6px;
            }
        }
        @media (max-width: 480px) {
            .side-dot-nav {
                right: 2px;
                padding: 6px 2px;
                border-radius: 18px;
                background: rgba(250, 247, 244, 0.4);
                backdrop-filter: blur(8px) saturate(100%);
                -webkit-backdrop-filter: blur(8px) saturate(100%);
                border-color: transparent;
                box-shadow: var(--shadow-sm);
            }
            .side-dot-nav .dot-link {
                width: 26px;
                height: 26px;
            }
            .side-dot-nav .dot {
                width: 6px;
                height: 6px;
            }
            .side-dot-nav .dot-link.active .dot {
                width: 8px;
                height: 8px;
                box-shadow: 0 0 0 4px rgba(196, 148, 108, 0.12);
            }
            :root {
                --side-nav-right: 2px;
            }
        }

        /* ===== Navbar ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(250, 247, 244, 0.78);
            backdrop-filter: blur(18px) saturate(120%);
            -webkit-backdrop-filter: blur(18px) saturate(120%);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
            padding: 0 24px;
        }
        .navbar.scrolled {
            background: rgba(250, 247, 244, 0.92);
            box-shadow: var(--shadow-sm);
            border-bottom-color: var(--border);
        }
        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
        }
        .nav-brand {
            font-family: var(--font-serif);
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-brand .brand-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: brandPulse 2.5s ease-in-out infinite;
        }
        @keyframes brandPulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(196, 148, 108, 0.45);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(196, 148, 108, 0);
            }
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            text-decoration: none;
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 15px;
            border-radius: 20px;
            transition: var(--transition);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-deep);
            background: var(--accent-glow);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--text-primary);
            font-size: 1.5rem;
            line-height: 1;
        }

        .main-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 100px 20px 60px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 22%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(196, 148, 108, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            animation: heroGlow 6s ease-in-out infinite;
        }
        @keyframes heroGlow {
            0%,
            100% {
                transform: translate(-50%, -50%) scale(1);
                opacity: 0.7;
            }
            50% {
                transform: translate(-50%, -50%) scale(1.25);
                opacity: 1;
            }
        }
        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 680px;
        }
        .hero-avatar {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent-glow) 50%, #f5ece3 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 28px;
            font-size: 2.6rem;
            color: var(--accent-deep);
            box-shadow: var(--shadow-lg), 0 0 0 8px rgba(196, 148, 108, 0.08);
            transition: var(--transition-slow);
            user-select: none;
            position: relative;
            animation: fireflyGlow 3s ease-in-out infinite;
        }
        @keyframes fireflyGlow {
            0%,
            100% {
                box-shadow: var(--shadow-lg), 0 0 0 8px rgba(196, 148, 108, 0.08), 0 0 30px rgba(196, 148, 108, 0.15);
            }
            50% {
                box-shadow: var(--shadow-xl), 0 0 0 14px rgba(196, 148, 108, 0.12), 0 0 50px rgba(196, 148, 108, 0.28);
            }
        }
        .hero-avatar::after {
            content: '';
            position: absolute;
            inset: -10px;
            border-radius: 50%;
            border: 2px dashed var(--accent-light);
            opacity: 0.5;
            animation: avatarSpin 20s linear infinite;
        }
        @keyframes avatarSpin {
            from {
                transform: rotate(0deg);
            }
            to {
                transform: rotate(360deg);
            }
        }
        .hero-avatar:hover {
            transform: scale(1.04);
        }
        .hero-greeting {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 8px;
            display: inline-block;
            background: var(--accent-glow);
            padding: 5px 14px;
            border-radius: 14px;
        }
        .hero-title {
            font-family: var(--font-serif);
            font-size: clamp(2.4rem, 5.5vw, 3.6rem);
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--text-primary);
            margin-bottom: 14px;
            line-height: 1.2;
        }
        .hero-title .accent {
            color: var(--accent);
        }
        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            font-weight: 400;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
            line-height: 1.65;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-quote {
            display: inline-block;
            font-size: 0.9rem;
            color: var(--text-tertiary);
            font-style: italic;
            letter-spacing: 0.04em;
            margin-bottom: 28px;
            line-height: 1.6;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-btn {
            display: inline-block;
            text-decoration: none;
            color: var(--accent-deep);
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 12px 28px;
            border: 2px solid var(--accent-light);
            border-radius: 28px;
            background: transparent;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            z-index: 1;
        }
        .hero-btn:hover {
            background: var(--accent-glow);
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            color: var(--text-tertiary);
            font-size: 0.8rem;
            letter-spacing: 0.05em;
            animation: bounceDown 2s ease-in-out infinite;
            cursor: pointer;
        }
        @keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }
        .hero-scroll .scroll-line {
            width: 1px;
            height: 28px;
            background: linear-gradient(to bottom, var(--accent-light), transparent);
            border-radius: 1px;
        }

        .section {
            padding: 40px 0 70px;
            scroll-margin-top: 80px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 8px;
            background: var(--accent-glow);
            padding: 5px 14px;
            border-radius: 14px;
        }
        .section-title {
            font-family: var(--font-serif);
            font-size: clamp(1.6rem, 3vw, 2.1rem);
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-tertiary);
            letter-spacing: 0.03em;
            margin-top: 8px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.55;
        }
        .section-divider {
            width: 50px;
            height: 3px;
            background: var(--accent-light);
            border-radius: 2px;
            margin: 14px auto 0;
            border: none;
        }

        .card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
            transform: translateY(-2px);
        }
        .card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-light), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .card:hover::after {
            opacity: 1;
        }

        .about-wrapper {
            max-width: var(--about-card-max);
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .about-intro-card {
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            padding: 0;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .about-intro-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
            transform: translateY(-2px);
        }
        .about-intro-card .card-accent-bar {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light), transparent);
            opacity: 0.8;
            z-index: 1;
        }
        .about-intro-card .card-body {
            padding: 32px 34px 28px;
            position: relative;
            z-index: 2;
        }
        .about-intro-card .card-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
        }
        .about-highlight {
            color: var(--accent-deep);
            font-weight: 700;
            background: linear-gradient(120deg, var(--accent-glow) 0%, var(--accent-glow) 70%);
            background-size: 100% 40%;
            background-repeat: no-repeat;
            background-position: bottom;
            padding: 0 4px;
            transition: var(--transition);
        }
        .about-highlight:hover {
            background-size: 100% 70%;
            color: #8b5e3c;
        }
        .about-intro-card .card-signature {
            margin-top: 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 16px;
            border-top: 1px dashed var(--border-light);
        }
        .about-intro-card .signature-line {
            width: 32px;
            height: 1px;
            background: var(--accent-light);
            border-radius: 1px;
        }
        .about-intro-card .signature-text {
            font-family: var(--font-serif);
            font-size: 1rem;
            font-style: italic;
            color: var(--accent);
            letter-spacing: 0.04em;
            font-weight: 600;
        }

        .about-pills-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        @media (max-width: 768px) {
            .about-pills-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
        }
        .about-pill {
            text-align: center;
            padding: 28px 22px 24px;
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            cursor: default;
        }
        .about-pill::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 3px;
            border-radius: 0 0 4px 4px;
            background: var(--accent-light);
            opacity: 0;
            transition: var(--transition);
        }
        .about-pill:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-light);
            transform: translateY(-4px);
        }
        .about-pill:hover::before {
            opacity: 1;
            width: 60px;
            background: var(--accent);
        }
        .about-pill .pill-icon-wrapper {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #fdf6f0, #f9ede2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 1.5rem;
            color: var(--accent-deep);
            transition: var(--transition);
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 12px rgba(196, 148, 108, 0.12);
        }
        .about-pill:hover .pill-icon-wrapper {
            background: linear-gradient(135deg, var(--accent-glow), var(--accent-light));
            transform: scale(1.08);
            box-shadow: 0 8px 20px rgba(196, 148, 108, 0.22);
            color: #8b5e3c;
        }
        .about-pill h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.04em;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .about-pill:hover h4 {
            color: var(--accent-deep);
        }
        .about-pill p {
            font-size: 0.84rem;
            color: var(--text-tertiary);
            line-height: 1.55;
            letter-spacing: 0.03em;
            position: relative;
            z-index: 1;
            max-width: 180px;
            margin: 0 auto;
        }
        .about-pill .pill-divider {
            width: 24px;
            height: 2px;
            background: var(--border-light);
            border-radius: 1px;
            margin: 10px auto 0;
            transition: var(--transition);
        }
        .about-pill:hover .pill-divider {
            width: 36px;
            background: var(--accent-light);
        }

        /* 学习与实践 */
        .practice-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            max-width: 960px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .practice-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
            }
        }
        .practice-card {
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            padding: 28px 26px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .practice-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
            transform: translateY(-3px);
        }
        .practice-card .card-top-bar {
            height: 4px;
            width: 100%;
            position: absolute;
            top: 0;
            left: 0;
        }
        .practice-card.notes .card-top-bar {
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
        }
        .practice-card.projects .card-top-bar {
            background: linear-gradient(90deg, #b8a590, #d4c4b2);
        }
        .practice-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .practice-card h4 .icon-circle {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .practice-card.notes h4 .icon-circle {
            background: #fdf3ea;
            color: var(--accent-deep);
        }
        .practice-card.projects h4 .icon-circle {
            background: #f6f1eb;
            color: #8b7355;
        }
        .practice-list {
            list-style: none;
            padding: 0;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .practice-list li {
            padding: 16px 18px;
            background: #fdfaf8;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: default;
        }
        .practice-list li:hover {
            background: #fff;
            border-color: var(--accent-light);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .practice-list li .item-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }
        .practice-list li .item-desc {
            font-size: 0.82rem;
            color: var(--text-tertiary);
            letter-spacing: 0.02em;
            line-height: 1.5;
        }

        /* 时间线 */
        .timeline-container {
            max-width: 660px;
            margin: 0 auto;
            position: relative;
            padding-left: 32px;
            border-left: 2px solid var(--accent-light);
        }
        @media (max-width: 600px) {
            .timeline-container {
                padding-left: 20px;
            }
        }
        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 28px;
            transition: var(--transition);
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -42px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--card-bg);
            border: 3px solid var(--accent);
            box-shadow: 0 0 0 6px rgba(196, 148, 108, 0.1);
            transition: var(--transition);
            z-index: 1;
        }
        .timeline-item:hover::before {
            background: var(--accent);
            box-shadow: 0 0 0 10px rgba(196, 148, 108, 0.18);
            border-color: var(--accent-deep);
        }
        .timeline-year {
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 700;
            letter-spacing: 0.06em;
            margin-bottom: 6px;
        }
        .timeline-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .timeline-desc {
            font-size: 0.86rem;
            color: var(--text-tertiary);
            margin-top: 4px;
            line-height: 1.55;
            letter-spacing: 0.02em;
        }

        /* 技能 */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            max-width: 960px;
            margin: 0 auto;
        }
        @media (max-width: 900px) {
            .skills-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .skills-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
            }
        }
        .skill-category-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .skill-category-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
            transform: translateY(-3px);
        }
        .skill-category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
        }
        .skill-category-card.cat-finance::before {
            background: var(--accent);
        }
        .skill-category-card.cat-data::before {
            background: #b8a590;
        }
        .skill-category-card.cat-tech::before {
            background: #c4b89e;
        }
        .skill-cat-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .skill-category-card.cat-finance .skill-cat-icon {
            background: #fdf3ea;
            color: var(--accent-deep);
        }
        .skill-category-card.cat-data .skill-cat-icon {
            background: #f6f1eb;
            color: #8b7355;
        }
        .skill-category-card.cat-tech .skill-cat-icon {
            background: #f8f4ee;
            color: #9b8a72;
        }
        .skill-category-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            margin-bottom: 14px;
        }
        .skill-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }
        .skill-tag {
            display: inline-block;
            font-size: 0.8rem;
            color: var(--text-secondary);
            background: #faf7f4;
            border: 1px solid var(--border-light);
            padding: 7px 14px;
            border-radius: 18px;
            letter-spacing: 0.03em;
            transition: var(--transition);
            white-space: nowrap;
        }
        .skill-tag:hover {
            background: var(--accent-glow);
            border-color: var(--accent-light);
            color: var(--accent-deep);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        /* 社交 */
        .social-links {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 10px;
            flex-wrap: wrap;
        }
        .social-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--card-bg);
            border: 1px solid var(--border);
            color: var(--text-tertiary);
            font-size: 1.2rem;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .social-link:hover {
            background: var(--accent-glow);
            border-color: var(--accent-light);
            color: var(--accent-deep);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* 页脚 */
        .footer {
            text-align: center;
            padding: 36px 20px 30px;
            border-top: 1px solid var(--border-light);
            margin-top: 20px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .footer-brand {
            font-family: var(--font-serif);
            font-size: 1.1rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .footer-tagline {
            font-size: 0.8rem;
            color: var(--text-tertiary);
            letter-spacing: 0.03em;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .footer-contact {
            font-size: 0.82rem;
            color: var(--text-secondary);
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }
        .footer-contact a {
            color: var(--accent-deep);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }
        .footer-contact a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .footer-contact .contact-note {
            color: var(--text-tertiary);
            font-size: 0.78rem;
            margin-left: 6px;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 18px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }
        .footer-links a {
            text-decoration: none;
            color: var(--text-tertiary);
            font-size: 0.82rem;
            letter-spacing: 0.03em;
            transition: var(--transition);
            padding: 4px 8px;
            border-radius: 10px;
        }
        .footer-links a:hover {
            color: var(--accent-deep);
            background: var(--accent-glow);
        }
        .footer-divider {
            width: 30px;
            height: 1px;
            background: var(--border);
            margin: 12px auto;
            border: none;
        }
        .footer-icp {
            font-size: 0.78rem;
            color: var(--text-tertiary);
            letter-spacing: 0.03em;
            margin-bottom: 4px;
        }
        .footer-icp a {
            color: var(--text-tertiary);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-icp a:hover {
            color: var(--accent-deep);
        }
        .footer-copy {
            font-size: 0.72rem;
            color: var(--text-tertiary);
            letter-spacing: 0.03em;
        }

        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .fade-in-delay-1 {
            transition-delay: 0.1s;
        }
        .fade-in-delay-2 {
            transition-delay: 0.2s;
        }
        .fade-in-delay-3 {
            transition-delay: 0.3s;
        }
        .fade-in-delay-4 {
            transition-delay: 0.4s;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(250, 247, 244, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 20px 20px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 10px 16px;
                font-size: 0.95rem;
                border-radius: 12px;
            }
            .nav-toggle {
                display: block;
            }
            .hero-avatar {
                width: 80px;
                height: 80px;
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 0.92rem;
            }
            .hero-quote {
                font-size: 0.82rem;
            }
            .card {
                padding: 20px 18px;
            }
            .about-intro-card .card-body {
                padding: 24px 20px 20px;
            }
            .about-intro-card .card-body p {
                font-size: 0.88rem;
            }
            .about-pills-grid {
                grid-template-columns: 1fr;
                max-width: 380px;
                margin: 0 auto;
            }
            .about-pill {
                padding: 22px 18px 20px;
            }
            .skills-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
            .skill-category-card {
                padding: 22px 18px;
            }
            .about-wrapper {
                gap: 18px;
            }
            .practice-grid {
                grid-template-columns: 1fr;
                max-width: 450px;
            }
            .timeline-container {
                padding-left: 20px;
            }
            .timeline-item {
                padding-left: 18px;
            }
            .timeline-item::before {
                left: -31px;
                width: 11px;
                height: 11px;
            }
            .practice-list li {
                padding: 14px 12px;
            }
            .social-link {
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .hero-title {
                font-size: 2rem;
            }
            .section {
                padding: 24px 0 50px;
            }
            .main-container {
                padding: 0 14px;
            }
            .card {
                border-radius: var(--radius);
                padding: 16px 14px;
            }
            .about-intro-card {
                border-radius: var(--radius-lg);
            }
            .about-intro-card .card-body {
                padding: 20px 16px 18px;
            }
            .about-pill {
                border-radius: var(--radius-lg);
                padding: 18px 14px 16px;
            }
            .skill-category-card {
                border-radius: var(--radius);
                padding: 18px 14px;
            }
            .nav-inner {
                height: 52px;
            }
            .nav-brand {
                font-size: 1.15rem;
            }
            .hero-btn {
                padding: 10px 22px;
                font-size: 0.82rem;
            }
            .footer-links {
                gap: 10px;
            }
        }

        /* ===== 留言板 ===== */
        .message-wrapper {
            max-width: 680px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .message-form-card {
            position: relative;
            overflow: visible;
        }
        .message-form-card .card-accent-bar {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light), transparent);
            opacity: 0.8;
            z-index: 1;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .message-form {
            padding: 8px 4px 0;
            position: relative;
            z-index: 2;
        }
        .hp-field {
            position: absolute;
            left: -9999px;
            top: -9999px;
            opacity: 0;
            pointer-events: none;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 7px;
            letter-spacing: 0.02em;
        }
        .required-mark {
            color: var(--accent-deep);
        }
        .form-optional {
            font-weight: 400;
            font-size: 0.78rem;
            color: var(--text-tertiary);
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 11px 15px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            font-family: var(--font-sans);
            font-size: 0.9rem;
            color: var(--text-primary);
            background: var(--bg);
            transition: var(--transition);
            resize: vertical;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-tertiary);
            opacity: 0.7;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(196, 148, 108, 0.12);
            background: var(--card-bg);
        }
        .form-group input.invalid,
        .form-group textarea.invalid {
            border-color: #d97757;
            box-shadow: 0 0 0 3px rgba(217, 119, 87, 0.1);
        }
        .form-error {
            display: block;
            font-size: 0.78rem;
            color: #d97757;
            margin-top: 4px;
            min-height: 1em;
            transition: var(--transition);
        }
        .form-meta-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 4px;
        }
        .char-count {
            font-size: 0.75rem;
            color: var(--text-tertiary);
            font-variant-numeric: tabular-nums;
        }
        .message-submit-btn {
            width: 100%;
            padding: 13px 24px;
            border: none;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent), var(--accent-deep));
            color: #fff;
            font-size: 0.92rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .message-submit-btn:hover:not(:disabled) {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(160, 117, 79, 0.3);
        }
        .message-submit-btn:active:not(:disabled) {
            transform: translateY(0);
        }
        .message-submit-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        .message-submit-btn .btn-loading {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .form-toast {
            margin-top: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 500;
            text-align: center;
            animation: toastSlide 0.3s ease;
        }
        @keyframes toastSlide {
            from { opacity: 0; transform: translateY(-8px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .form-toast.success {
            background: #edf7ed;
            color: #2e7d32;
            border: 1px solid #c8e6c9;
        }
        .form-toast.error {
            background: #fdecea;
            color: #c62828;
            border: 1px solid #f5c6cb;
        }
        .message-list-section {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 24px 26px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .message-list-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border-light);
        }
        .message-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .message-loading {
            text-align: center;
            color: var(--text-tertiary);
            font-size: 0.85rem;
            padding: 20px 0;
        }
        .message-empty {
            text-align: center;
            color: var(--text-tertiary);
            font-size: 0.85rem;
            padding: 20px 0;
        }
        .message-item {
            padding: 14px 16px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            animation: msgAppear 0.3s ease;
        }
        @keyframes msgAppear {
            from { opacity: 0; transform: translateY(8px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .message-item-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 6px;
        }
        .message-item-name {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .message-item-time {
            font-size: 0.72rem;
            color: var(--text-tertiary);
            font-variant-numeric: tabular-nums;
        }
        .message-item-content {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            word-break: break-word;
        }
        @media (max-width: 768px) {
            .message-wrapper {
                gap: 20px;
            }
            .message-list-section {
                padding: 18px 16px;
            }
        }