/* 全局重置 + 浅蓝白高端基调 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: #f4f9ff;
            color: #1a2e4a;
            line-height: 1.5;
            scroll-behavior: smooth;
        }

        :root {
            --deep-blue: #1b4f8a;
            --sky-blue: #6bb8e8;
            --pale-blue: #d9eafb;
            --ice-blue: #eef6fe;
            --accent-blue: #3a8fd4;
            --white: #ffffff;
            --shadow-soft: 0 20px 40px -12px rgba(30, 80, 140, 0.12);
            --glass-border: rgba(107, 184, 232, 0.25);
        }

        /* ---------- 头部 ---------- */
        .header {
            background: linear-gradient(145deg, #ffffff 0%, #f0f8ff 100%);
            padding: 0 8%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 8px 28px rgba(30, 80, 140, 0.08);
            border-bottom: 1px solid rgba(107, 184, 232, 0.3);
            backdrop-filter: blur(8px);
            min-height: 90px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .logo-mark {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            border-radius: 16px 4px 16px 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 18px rgba(58, 143, 212, 0.3);
            transition: transform 0.2s ease;
        }

        .logo-mark i {
            font-size: 30px;
            color: #ffffff;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .logo-mark:hover {
            transform: scale(1.02) rotate(1deg);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
        }

        .logo-text .chinese {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 2px;
            color: #1a2e4a;
        }

        .logo-text .english {
            font-size: 12px;
            font-weight: 400;
            letter-spacing: 3px;
            color: #3a8fd4;
            text-transform: uppercase;
            margin-top: -2px;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 42px;
        }

        .nav a {
            text-decoration: none;
            color: #1e3b5c;
            font-weight: 500;
            font-size: 16px;
            letter-spacing: 0.3px;
            transition: all 0.25s ease;
            position: relative;
            padding: 8px 0;
            opacity: 0.85;
        }

        .nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #6bb8e8, #3a8fd4);
            transition: width 0.3s ease;
            border-radius: 2px;
        }

        .nav a:hover {
            opacity: 1;
            color: #1b4f8a;
        }

        .nav a:hover::after {
            width: 100%;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .header-cta .btn-outline {
            padding: 10px 24px;
            border: 1.5px solid #6bb8e8;
            border-radius: 40px;
            color: #1b4f8a;
            font-weight: 500;
            font-size: 15px;
            background: transparent;
            transition: all 0.3s ease;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
        }

        .header-cta .btn-outline i {
            font-size: 14px;
            color: #3a8fd4;
        }

        .header-cta .btn-outline:hover {
            background: #eef6fe;
            border-color: #3a8fd4;
            color: #0e2e4a;
            box-shadow: 0 8px 18px -6px rgba(58, 143, 212, 0.3);
            transform: translateY(-1px);
        }

        /* 用户状态区域 */
        .user-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .user-logged-in {
            display: none;
            align-items: center;
            gap: 12px;
        }

        .user-logged-in.show {
            display: flex;
        }

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 6px 14px -4px rgba(58, 143, 212, 0.4);
        }

        .user-name {
            font-weight: 600;
            font-size: 14px;
            color: #1a2e4a;
        }

        .btn-logout {
            padding: 8px 18px;
            border-radius: 30px;
            border: 1px solid rgba(107, 184, 232, 0.5);
            background: #ffffff;
            color: #1b4f8a;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.25s;
            display: flex;
            align-items: center;
            gap: 6px;
            font-family: inherit;
        }

        .btn-logout:hover {
            background: #fef2f2;
            border-color: #e88;
            color: #c0392b;
        }

        .btn-logout i {
            font-size: 12px;
        }

        /* ---------- 汉堡菜单图标（三横变叉动画） ---------- */
        .mobile-menu-icon {
            display: none;
            width: 44px;
            height: 44px;
            cursor: pointer;
            padding: 10px;
            border-radius: 12px;
            transition: background 0.25s ease;
            position: relative;
            flex-direction: column;
            justify-content: space-between;
            align-items: stretch;
            box-sizing: border-box;
        }

        .mobile-menu-icon:hover {
            background: rgba(107, 184, 232, 0.15);
        }

        .mobile-menu-icon .bar {
            display: block;
            width: 100%;
            height: 2.5px;
            background: #1b4f8a;
            border-radius: 3px;
            transition: all 0.35s cubic-bezier(0.68, -0.55, 0.27, 1.55);
            transform-origin: center;
            box-shadow: 0 1px 2px rgba(58, 143, 212, 0.15);
        }

        .mobile-menu-icon .bar1 {
            transform: translateY(0) rotate(0);
        }

        .mobile-menu-icon .bar2 {
            opacity: 1;
            transform: scaleX(1);
        }

        .mobile-menu-icon .bar3 {
            transform: translateY(0) rotate(0);
        }

        .mobile-menu-icon.active .bar1 {
            transform: translateY(9px) rotate(45deg);
            background: #e8437a;
        }

        .mobile-menu-icon.active .bar2 {
            opacity: 0;
            transform: scaleX(0);
        }

        .mobile-menu-icon.active .bar3 {
            transform: translateY(-9px) rotate(-45deg);
            background: #e8437a;
        }

        /* ---------- 移动端导航菜单 ---------- */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 90px;
            left: 0;
            width: 100%;
            background: linear-gradient(145deg, #ffffff 0%, #f0f8ff 100%);
            box-shadow: 0 20px 40px -12px rgba(30, 80, 140, 0.25);
            border-bottom: 1px solid rgba(107, 184, 232, 0.3);
            z-index: 999;
            padding: 20px 8% 30px;
            flex-direction: column;
            gap: 4px;
            transform: translateY(-10px);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            max-height: calc(100vh - 90px);
            overflow-y: auto;
        }

        .mobile-nav.active {
            display: flex;
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }

        .mobile-nav a {
            text-decoration: none;
            color: #1e3b5c;
            font-weight: 500;
            font-size: 17px;
            padding: 16px 8px;
            border-bottom: 1px solid rgba(107, 184, 232, 0.2);
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-nav a:last-child {
            border-bottom: none;
        }

        .mobile-nav a i {
            color: #6bb8e8;
            font-size: 14px;
            transition: transform 0.2s;
        }

        .mobile-nav a:hover,
        .mobile-nav a:active {
            color: #1b4f8a;
            background: rgba(107, 184, 232, 0.08);
            padding-left: 16px;
        }

        .mobile-nav a:hover i {
            transform: translateX(4px);
        }

        .mobile-nav .mobile-cta {
            margin-top: 20px;
            justify-content: center;
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            color: #ffffff !important;
            border-radius: 40px;
            border-bottom: none !important;
            padding: 16px 24px !important;
            font-weight: 600;
            box-shadow: 0 8px 20px -6px rgba(58, 143, 212, 0.4);
        }

        .mobile-nav .mobile-cta i {
            color: #ffffff !important;
        }

        /* ---------- 主容器 ---------- */
        .main-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 8%;
        }

        .section {
            padding: 90px 0;
        }

        .section-title {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #1a2e4a;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .section-sub {
            color: #4a6e8c;
            font-size: 1.1rem;
            max-width: 700px;
            margin-bottom: 60px;
            font-weight: 400;
            border-left: 4px solid #6bb8e8;
            padding-left: 24px;
        }

        /* ---------- 快速导航链接区 ---------- */
        .quick-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 50px;
            padding: 28px 32px;
            background: linear-gradient(135deg, #ffffff 0%, #eef6fe 100%);
            border-radius: 28px;
            border: 1px solid rgba(107, 184, 232, 0.35);
            box-shadow: 0 12px 28px -16px rgba(30, 80, 140, 0.15);
        }

        .quick-nav-label {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            color: #1b4f8a;
            font-size: 1.05rem;
            margin-right: 12px;
        }

        .quick-nav-label i {
            color: #3a8fd4;
            font-size: 18px;
        }

        .quick-nav a {
            text-decoration: none;
            color: #1e3b5c;
            background: #ffffff;
            padding: 10px 22px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.95rem;
            border: 1px solid rgba(107, 184, 232, 0.4);
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .quick-nav a i {
            color: #6bb8e8;
            font-size: 13px;
        }

        .quick-nav a:hover {
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            color: #ffffff;
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: 0 10px 20px -8px rgba(58, 143, 212, 0.5);
        }

        .quick-nav a:hover i {
            color: #ffffff;
        }

        /* ---------- 服务卡片 ---------- */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 30px;
        }

        .service-card {
            background: #ffffff;
            border-radius: 32px;
            padding: 40px 32px;
            box-shadow: 0 6px 24px rgba(30, 80, 140, 0.04), 0 2px 6px rgba(0, 0, 0, 0.02);
            transition: all 0.4s cubic-bezier(0.2, 0.9, 0.4, 1);
            border: 1px solid rgba(107, 184, 232, 0.2);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #6bb8e8, #b0d8f5);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 28px 48px -16px rgba(30, 80, 140, 0.18);
            border-color: rgba(58, 143, 212, 0.5);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .card-icon {
            width: 68px;
            height: 68px;
            background: linear-gradient(135deg, #eef6fe, #d9eafb);
            border-radius: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 30px;
            color: #1b4f8a;
            font-size: 30px;
            transition: all 0.3s ease;
            border: 1px solid rgba(107, 184, 232, 0.4);
        }

        .service-card:hover .card-icon {
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            color: #ffffff;
            border-color: transparent;
        }

        .service-card h3 {
            font-size: 1.7rem;
            font-weight: 600;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            color: #1a2e4a;
        }

        .service-card p {
            color: #4a6e8c;
            margin-bottom: 28px;
            font-size: 1rem;
            line-height: 1.6;
            flex: 1;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: #3a8fd4;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
            border-bottom: 1.5px solid rgba(58, 143, 212, 0.4);
            padding-bottom: 6px;
            width: fit-content;
            transition: all 0.2s;
            text-decoration: none;
        }

        .service-card:hover .card-tag {
            color: #1b4f8a;
            border-bottom-color: #1b4f8a;
        }

        /* ============================================================
           应用中心
           ============================================================ */
        .apps-section {
            margin: 80px 0 40px;
        }

        .apps-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .apps-header h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1a2e4a;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .apps-header h3 i {
            color: #3a8fd4;
            font-size: 24px;
        }

        .apps-header .more-link {
            color: #3a8fd4;
            font-weight: 600;
            text-decoration: none;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.25s;
        }

        .apps-header .more-link:hover {
            color: #1b4f8a;
            gap: 12px;
        }

        .apps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 22px;
        }

        .app-card {
            background: #ffffff;
            border-radius: 24px;
            padding: 28px 24px;
            border: 1px solid rgba(107, 184, 232, 0.25);
            box-shadow: 0 8px 22px -14px rgba(30, 80, 140, 0.12);
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 14px;
            position: relative;
            overflow: hidden;
        }

        .app-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, #6bb8e8, #3a8fd4);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.35s ease;
        }

        .app-card:hover {
            transform: translateY(-6px);
            border-color: rgba(58, 143, 212, 0.5);
            box-shadow: 0 24px 40px -16px rgba(30, 80, 140, 0.22);
        }

        .app-card:hover::after {
            transform: scaleX(1);
        }

        .app-icon {
            width: 56px;
            height: 56px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #ffffff;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .app-card:hover .app-icon {
            transform: scale(1.08) rotate(-3deg);
        }

        .app-icon.blue {
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            box-shadow: 0 8px 18px -6px rgba(58, 143, 212, 0.5);
        }

        .app-icon.pink {
            background: linear-gradient(135deg, #f78ca0, #e8437a);
            box-shadow: 0 8px 18px -6px rgba(232, 67, 122, 0.45);
        }

        .app-icon.orange {
            background: linear-gradient(135deg, #f6b26b, #e8853a);
            box-shadow: 0 8px 18px -6px rgba(232, 133, 58, 0.45);
        }

        .app-icon.purple {
            background: linear-gradient(135deg, #a78bfa, #7c5ce0);
            box-shadow: 0 8px 18px -6px rgba(124, 92, 224, 0.45);
        }

        .app-icon.teal {
            background: linear-gradient(135deg, #4fd1c5, #2ba89c);
            box-shadow: 0 8px 18px -6px rgba(43, 168, 156, 0.45);
        }

        .app-icon.green {
            background: linear-gradient(135deg, #7dd87d, #3faf3f);
            box-shadow: 0 8px 18px -6px rgba(63, 175, 63, 0.45);
        }

        .app-icon.indigo {
            background: linear-gradient(135deg, #6b8ce8, #3a5fd4);
            box-shadow: 0 8px 18px -6px rgba(58, 95, 212, 0.45);
        }

        .app-info h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #1a2e4a;
            margin-bottom: 6px;
        }

        .app-info p {
            font-size: 0.88rem;
            color: #5a7a9a;
            line-height: 1.5;
        }

        .app-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #3a8fd4;
            background: rgba(107, 184, 232, 0.12);
            padding: 4px 12px;
            border-radius: 20px;
            margin-top: 4px;
            width: fit-content;
        }

        .app-badge i {
            font-size: 10px;
        }

        /* ============================================================
           登录/注册弹窗
           ============================================================ */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(10, 30, 60, 0.5);
            backdrop-filter: blur(6px);
            z-index: 2000;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .modal-overlay.show {
            display: flex;
            opacity: 1;
        }

        .modal-box {
            background: #ffffff;
            border-radius: 32px;
            width: 100%;
            max-width: 440px;
            padding: 44px 40px;
            box-shadow: 0 40px 80px -20px rgba(10, 30, 60, 0.4);
            border: 1px solid rgba(107, 184, 232, 0.3);
            position: relative;
            transform: translateY(20px) scale(0.97);
            transition: transform 0.35s cubic-bezier(0.2, 0.9, 0.4, 1);
        }

        .modal-overlay.show .modal-box {
            transform: translateY(0) scale(1);
        }

        .modal-close {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            border: none;
            background: rgba(107, 184, 232, 0.1);
            color: #3a8fd4;
            font-size: 18px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }

        .modal-close:hover {
            background: rgba(107, 184, 232, 0.25);
            color: #1b4f8a;
        }

        .modal-header {
            text-align: center;
            margin-bottom: 32px;
        }

        .modal-header .modal-icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: #ffffff;
            font-size: 26px;
            box-shadow: 0 12px 24px -8px rgba(58, 143, 212, 0.5);
        }

        .modal-header h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #1a2e4a;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }

        .modal-header p {
            color: #6a8aa8;
            font-size: 0.95rem;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: #1e3b5c;
            margin-bottom: 8px;
        }

        .form-input-wrap {
            position: relative;
            display: flex;
            align-items: center;
        }

        .form-input-wrap i {
            position: absolute;
            left: 18px;
            color: #8aa8c2;
            font-size: 15px;
            pointer-events: none;
            transition: color 0.2s;
        }

        .form-input-wrap input {
            width: 100%;
            padding: 15px 18px 15px 48px;
            border-radius: 16px;
            border: 1.5px solid rgba(107, 184, 232, 0.4);
            background: #f8fbff;
            font-size: 0.98rem;
            color: #1a2e4a;
            outline: none;
            transition: all 0.25s ease;
            font-family: inherit;
        }

        .form-input-wrap input::placeholder {
            color: #a8c0d8;
        }

        .form-input-wrap input:focus {
            border-color: #3a8fd4;
            background: #ffffff;
            box-shadow: 0 0 0 4px rgba(58, 143, 212, 0.1);
        }

        .form-input-wrap:focus-within i {
            color: #3a8fd4;
        }

        .form-btn {
            width: 100%;
            padding: 16px;
            border-radius: 16px;
            border: none;
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            font-family: inherit;
            box-shadow: 0 12px 24px -8px rgba(58, 143, 212, 0.5);
            margin-top: 8px;
        }

        .form-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 18px 32px -8px rgba(58, 143, 212, 0.65);
        }

        .form-btn:active {
            transform: translateY(0);
        }

        .form-footer {
            text-align: center;
            margin-top: 20px;
            color: #6a8aa8;
            font-size: 0.9rem;
        }

        .form-footer a {
            color: #3a8fd4;
            font-weight: 600;
            text-decoration: none;
            transition: color 0.2s;
        }

        .form-footer a:hover {
            color: #1b4f8a;
            text-decoration: underline;
        }

        /* 消息提示 toast */
        .toast {
            position: fixed;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%) translateY(100px);
            background: #1a2e4a;
            color: #ffffff;
            padding: 14px 28px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            box-shadow: 0 20px 40px -12px rgba(10, 30, 60, 0.5);
            z-index: 3000;
            opacity: 0;
            transition: all 0.4s cubic-bezier(0.2, 0.9, 0.4, 1);
            display: flex;
            align-items: center;
            gap: 10px;
            pointer-events: none;
        }

        .toast.show {
            transform: translateX(-50%) translateY(0);
            opacity: 1;
        }

        .toast i {
            color: #6bb8e8;
        }

        /* ---------- 网址导航 ---------- */
        .link-nav-section {
            margin: 70px 0 40px;
        }

        .link-nav-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }

        .link-nav-header h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #1a2e4a;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .link-nav-header h3 i {
            color: #3a8fd4;
            font-size: 22px;
        }

        .link-nav-header .more-link {
            color: #3a8fd4;
            font-weight: 600;
            text-decoration: none;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.25s;
        }

        .link-nav-header .more-link:hover {
            color: #1b4f8a;
            gap: 12px;
        }

        .link-nav-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 14px;
        }

        .link-nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 18px;
            background: #ffffff;
            border: 1px solid rgba(107, 184, 232, 0.3);
            border-radius: 16px;
            text-decoration: none;
            color: #1e3b5c;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            box-shadow: 0 4px 10px -6px rgba(30, 80, 140, 0.08);
        }

        .link-nav-item i {
            color: #6bb8e8;
            font-size: 16px;
            width: 20px;
            text-align: center;
            transition: all 0.25s ease;
            flex-shrink: 0;
        }

        .link-nav-item span {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .link-nav-item:hover {
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            color: #ffffff;
            border-color: transparent;
            transform: translateY(-3px);
            box-shadow: 0 12px 22px -10px rgba(58, 143, 212, 0.55);
        }

        .link-nav-item:hover i {
            color: #ffffff;
        }

        /* ---------- 简洁文章列表 ---------- */
        .simple-article-section {
            margin: 50px 0 60px;
        }

        .simple-article-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 24px;
        }

        .simple-article-header h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #1a2e4a;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .simple-article-header h3 i {
            color: #3a8fd4;
            font-size: 22px;
        }

        .simple-article-header .more-link {
            color: #3a8fd4;
            font-weight: 600;
            text-decoration: none;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.25s;
        }

        .simple-article-header .more-link:hover {
            color: #1b4f8a;
            gap: 12px;
        }

        .simple-article-list {
            list-style: none;
            background: #ffffff;
            border-radius: 24px;
            padding: 8px 0;
            border: 1px solid rgba(107, 184, 232, 0.3);
            box-shadow: 0 8px 22px -14px rgba(30, 80, 140, 0.12);
            overflow: hidden;
        }

        .simple-article-list li {
            border-bottom: 1px solid rgba(107, 184, 232, 0.18);
        }

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

        .simple-article-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 28px;
            text-decoration: none;
            color: #1e3b5c;
            font-weight: 500;
            font-size: 1rem;
            transition: all 0.22s ease;
        }

        .simple-article-list a .title-wrap {
            display: flex;
            align-items: center;
            gap: 14px;
            min-width: 0;
        }

        .simple-article-list a .title-wrap i {
            color: #6bb8e8;
            font-size: 12px;
            flex-shrink: 0;
            transition: all 0.22s ease;
        }

        .simple-article-list a .title-text {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .simple-article-list a .article-date {
            color: #8aa8c2;
            font-size: 0.85rem;
            font-weight: 400;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .simple-article-list a .article-date i {
            font-size: 11px;
            color: #b0d0e8;
        }

        .simple-article-list a:hover {
            background: linear-gradient(90deg, rgba(107, 184, 232, 0.1), rgba(58, 143, 212, 0.05));
            color: #1b4f8a;
            padding-left: 36px;
        }

        .simple-article-list a:hover .title-wrap i {
            color: #3a8fd4;
            transform: translateX(2px);
        }

        /* ---------- 搜索区 ---------- */
        .search-section {
            margin: 70px 0 50px;
            background: linear-gradient(135deg, #ffffff 0%, #eef6fe 100%);
            border-radius: 36px;
            padding: 48px 6%;
            border: 1px solid rgba(107, 184, 232, 0.4);
            box-shadow: 0 20px 40px -16px rgba(30, 80, 140, 0.12);
        }

        .search-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 24px;
        }

        .search-header i {
            font-size: 26px;
            color: #3a8fd4;
        }

        .search-header h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #1a2e4a;
            letter-spacing: -0.02em;
        }

        .search-bar {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: stretch;
        }

        .search-input-wrap {
            flex: 1 1 320px;
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-input-wrap i {
            position: absolute;
            left: 22px;
            color: #6bb8e8;
            font-size: 17px;
            pointer-events: none;
        }

        .search-input-wrap input {
            width: 100%;
            padding: 18px 24px 18px 56px;
            border-radius: 40px;
            border: 1.5px solid rgba(107, 184, 232, 0.5);
            background: #ffffff;
            font-size: 1rem;
            color: #1a2e4a;
            outline: none;
            transition: all 0.25s ease;
            font-family: inherit;
        }

        .search-input-wrap input::placeholder {
            color: #8aa8c2;
        }

        .search-input-wrap input:focus {
            border-color: #3a8fd4;
            box-shadow: 0 0 0 4px rgba(58, 143, 212, 0.12);
        }

        .search-btn {
            padding: 18px 44px;
            border-radius: 40px;
            border: none;
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: inherit;
            box-shadow: 0 10px 24px -8px rgba(58, 143, 212, 0.5);
            white-space: nowrap;
        }

        .search-btn i {
            font-size: 15px;
        }

        .search-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 30px -8px rgba(58, 143, 212, 0.65);
        }

        .search-hint {
            margin-top: 18px;
            color: #6a8aa8;
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .search-hint i {
            color: #6bb8e8;
            font-size: 13px;
        }

        .search-hint span {
            color: #3a8fd4;
            cursor: pointer;
            font-weight: 500;
            transition: color 0.2s;
        }

        .search-hint span:hover {
            color: #1b4f8a;
            text-decoration: underline;
        }

        /* ---------- 文章卡片列表 ---------- */
        .article-section {
            margin: 60px 0;
        }

        .article-section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .article-section-header h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1a2e4a;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .article-section-header h3 i {
            color: #3a8fd4;
            font-size: 24px;
        }

        .article-more {
            color: #3a8fd4;
            font-weight: 600;
            text-decoration: none;
            font-size: 0.98rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.25s;
        }

        .article-more:hover {
            color: #1b4f8a;
            gap: 12px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }

        .article-card {
            display: flex;
            gap: 20px;
            background: #ffffff;
            border-radius: 24px;
            padding: 24px;
            border: 1px solid rgba(107, 184, 232, 0.25);
            box-shadow: 0 8px 20px -12px rgba(30, 80, 140, 0.1);
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
            align-items: flex-start;
        }

        .article-card:hover {
            transform: translateY(-5px);
            border-color: rgba(58, 143, 212, 0.5);
            box-shadow: 0 22px 36px -16px rgba(30, 80, 140, 0.2);
        }

        .article-thumb {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, #eef6fe, #d9eafb);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: #3a8fd4;
            font-size: 26px;
            border: 1px solid rgba(107, 184, 232, 0.4);
            transition: all 0.3s ease;
        }

        .article-card:hover .article-thumb {
            background: linear-gradient(135deg, #6bb8e8, #3a8fd4);
            color: #ffffff;
            border-color: transparent;
        }

        .article-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .article-cat {
            font-size: 0.78rem;
            font-weight: 600;
            color: #3a8fd4;
            text-transform: uppercase;
            letter-spacing: 1.5px;
        }

        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #1a2e4a;
            line-height: 1.4;
            transition: color 0.2s;
        }

        .article-card:hover .article-body h4 {
            color: #1b4f8a;
        }

        .article-body p {
            color: #5a7a9a;
            font-size: 0.92rem;
            line-height: 1.6;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            color: #8aa8c2;
            font-size: 0.82rem;
            margin-top: 4px;
        }

        .article-meta i {
            color: #6bb8e8;
            font-size: 11px;
            margin-right: 4px;
        }

        /* ---------- 统计展示栏 ---------- */
        .stats-showcase {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
            background: linear-gradient(135deg, #ffffff 0%, #eef6fe 100%);
            border-radius: 48px;
            padding: 64px 8%;
            margin: 60px 0 30px;
            box-shadow: 0 20px 40px -12px rgba(30, 80, 140, 0.1);
            border: 1px solid rgba(107, 184, 232, 0.4);
        }

        .stat-item {
            text-align: center;
            color: #1a2e4a;
            flex: 1;
            min-width: 150px;
        }

        .stat-number {
            font-size: 3.2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #1b4f8a, #3a8fd4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 1rem;
            color: #5a7a9a;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-top: 8px;
            font-weight: 400;
        }

        /* ---------- 混合内容区 ---------- */
        .feature-split {
            display: flex;
            gap: 48px;
            margin: 70px 0 30px;
            align-items: center;
            flex-wrap: wrap;
        }

        .feature-text {
            flex: 1 1 380px;
        }

        .feature-text .eyebrow {
            color: #3a8fd4;
            text-transform: uppercase;
            font-weight: 600;
            letter-spacing: 3px;
            font-size: 0.85rem;
            margin-bottom: 12px;
        }

        .feature-text h2 {
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #1a2e4a;
            margin-bottom: 24px;
            line-height: 1.2;
        }

        .feature-text p {
            color: #4a6e8c;
            font-size: 1.1rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .feature-badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .badge-item {
            background: #ffffff;
            border-radius: 40px;
            padding: 12px 24px;
            font-weight: 500;
            color: #1a2e4a;
            box-shadow: 0 4px 10px rgba(30, 80, 140, 0.04);
            border: 1px solid rgba(107, 184, 232, 0.4);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
        }

        .badge-item i {
            color: #3a8fd4;
            font-size: 16px;
        }

        .feature-visual {
            flex: 1 1 320px;
            background: linear-gradient(145deg, #ffffff, #eef6fe);
            border-radius: 40px;
            padding: 24px;
            box-shadow: 0 20px 35px -12px rgba(30, 80, 140, 0.1);
            border: 1px solid rgba(107, 184, 232, 0.3);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
            min-height: 300px;
        }

        .visual-tile {
            background: #ffffff;
            width: 120px;
            height: 120px;
            border-radius: 28px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 20px -8px rgba(30, 80, 140, 0.1);
            border: 1px solid rgba(107, 184, 232, 0.3);
            transition: all 0.25s;
            color: #1a2e4a;
            font-weight: 600;
        }

        .visual-tile i {
            font-size: 36px;
            color: #3a8fd4;
            margin-bottom: 8px;
        }

        .visual-tile span {
            font-size: 0.85rem;
            letter-spacing: 0.5px;
        }

        .visual-tile:hover {
            transform: scale(1.04);
            border-color: #6bb8e8;
            box-shadow: 0 14px 24px -8px rgba(58, 143, 212, 0.25);
        }

        /* ---------- 资讯三卡片 ---------- */
        .news-cards {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 70px;
        }

        .news-card {
            flex: 1 1 280px;
            background: #ffffff;
            border-radius: 28px;
            padding: 32px;
            border: 1px solid rgba(107, 184, 232, 0.3);
            box-shadow: 0 8px 20px -10px rgba(30, 80, 140, 0.08);
            transition: all 0.3s ease;
            text-decoration: none;
            color: inherit;
            display: block;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 22px 38px -16px rgba(30, 80, 140, 0.18);
            border-color: rgba(58, 143, 212, 0.45);
        }

        .news-card i.news-icon {
            font-size: 28px;
            color: #3a8fd4;
            margin-bottom: 20px;
            display: block;
        }

        .news-card h4 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: #1a2e4a;
        }

        .news-card p {
            color: #4a6e8c;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .news-card span {
            color: #3a8fd4;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: gap 0.2s;
        }

        .news-card:hover span {
            gap: 12px;
        }

        /* ---------- 底部 ---------- */
        .footer {
            background: linear-gradient(135deg, #ffffff 0%, #e6f0fa 100%);
            color: #1a2e4a;
            padding: 80px 8% 30px;
            margin-top: 60px;
            border-top: 1px solid rgba(107, 184, 232, 0.4);
            box-shadow: 0 -10px 30px rgba(30, 80, 140, 0.06);
            position: relative;
        }

        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 8%;
            width: 120px;
            height: 4px;
            background: linear-gradient(90deg, #6bb8e8, #b0d8f5);
            border-radius: 0 0 4px 4px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 48px;
            margin-bottom: 60px;
        }

        .footer-brand {
            max-width: 280px;
        }

        .footer-brand .logo-area {
            margin-bottom: 20px;
        }

        .footer-brand .logo-text .chinese {
            font-size: 24px;
        }

        .footer-brand p {
            color: #4a6e8c;
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 16px 0 24px;
        }

        .footer-social {
            display: flex;
            gap: 18px;
        }

        .footer-social a {
            color: #3a8fd4;
            background: rgba(107, 184, 232, 0.12);
            width: 44px;
            height: 44px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            transition: all 0.25s ease;
            border: 1px solid rgba(107, 184, 232, 0.25);
            text-decoration: none;
        }

        .footer-social a:hover {
            background: #3a8fd4;
            color: #ffffff;
            border-color: #3a8fd4;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px -8px rgba(58, 143, 212, 0.5);
        }

        .footer-heading {
            font-size: 1.1rem;
            font-weight: 600;
            letter-spacing: 1px;
            color: #1a2e4a;
            margin-bottom: 28px;
            position: relative;
            display: inline-block;
        }

        .footer-heading::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 32px;
            height: 2px;
            background: #6bb8e8;
            border-radius: 2px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 16px;
        }

        .footer-links a {
            color: #3e6280;
            text-decoration: none;
            font-size: 0.98rem;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a i {
            font-size: 12px;
            color: #6bb8e8;
            opacity: 0.8;
        }

        .footer-links a:hover {
            color: #1b4f8a;
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(107, 184, 232, 0.3);
            padding-top: 36px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            color: #5a7a9a;
            font-size: 0.9rem;
        }

        .footer-bottom-links {
            display: flex;
            gap: 32px;
        }

        .footer-bottom-links a {
            color: #5a7a9a;
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-bottom-links a:hover {
            color: #3a8fd4;
        }

        .blue-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: #6bb8e8;
            border-radius: 50%;
            margin: 0 8px;
            opacity: 0.8;
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 1024px) {
            .header {
                padding: 0 5%;
            }
            .nav {
                gap: 28px;
            }
            .section-title {
                font-size: 2rem;
            }
        }

        @media (max-width: 820px) {
            .nav {
                display: none;
            }
            .mobile-menu-icon {
                display: flex;
            }
            .header-cta .btn-outline span {
                display: none;
            }
            .header-cta .btn-outline {
                padding: 10px 16px;
            }
            .stats-showcase {
                padding: 48px 6%;
                gap: 40px;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .search-btn {
                flex: 1;
                justify-content: center;
            }
            .quick-nav {
                padding: 22px 24px;
            }
            .link-nav-grid {
                grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
            }
            .user-name {
                display: none;
            }
        }

        @media (min-width: 821px) {
            .mobile-nav {
                display: none !important;
            }
        }

        @media (max-width: 580px) {
            .header {
                min-height: 75px;
            }
            .mobile-nav {
                top: 75px;
                max-height: calc(100vh - 75px);
            }
            .logo-text .chinese {
                font-size: 20px;
            }
            .logo-mark {
                width: 44px;
                height: 44px;
            }
            .logo-mark i {
                font-size: 24px;
            }
            .section {
                padding: 60px 0;
            }
            .feature-text h2 {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .search-section {
                padding: 36px 6%;
            }
            .search-btn {
                width: 100%;
            }
            .article-section-header h3 {
                font-size: 1.5rem;
            }
            .link-nav-grid {
                grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
                gap: 10px;
            }
            .link-nav-item {
                padding: 12px 14px;
                font-size: 0.9rem;
            }
            .simple-article-list a {
                padding: 14px 20px;
                font-size: 0.95rem;
            }
            .simple-article-list a .article-date {
                display: none;
            }
            .apps-grid {
                grid-template-columns: 1fr;
            }
            .modal-box {
                padding: 32px 24px;
            }
        }