/* ============================================================
   全局样式重置 & 新视觉体系（#008489 · #73c2c7 · #cbe4e9）
   底部：浅色背景 | 按钮：全新渐变光效
   ============================================================ */

:root {
    --primary: #008489;
    --primary-dark: #00676b;
    --secondary: #73c2c7;
    --secondary-light: #a0d6da;
    --light-bg: #cbe4e9;
    --white: #ffffff;
    --off-white: #f4f9fb;
    --gray-100: #eef3f5;
    --gray-300: #c8d6da;
    --gray-600: #5c7a7f;
    --gray-700: #3d5a5f;
    --gray-900: #1a2f33;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --shadow-card: 0 16px 48px -8px rgba(0, 132, 137, 0.12);
    --shadow-hover: 0 24px 64px -12px rgba(0, 132, 137, 0.20);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--off-white);
    color: var(--gray-900);
    line-height: 1.6;
    padding-top: 80px;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ---------- 标题装饰 ---------- */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    color: var(--primary);
}
.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 3rem;
    border-left: 4px solid var(--secondary);
    padding-left: 1rem;
}

/* ============================================================
   头部（Header）
   ============================================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.90);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid rgba(0, 132, 137, 0.08);
    height: 80px;
    display: flex;
    align-items: center;
    transition: var(--transition);
    box-shadow: 0 1px 4px rgba(0, 132, 137, 0.04);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

/* Logo */
.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.logo-area img {
    height: 42px;
    width: auto;
    transition: var(--transition);
}
.logo-text-fallback {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 2px;
}
.logo-text-fallback span {
    color: var(--secondary);
}

/* 导航菜单 */
.main-nav ul {
    display: flex;
    align-items: center;
    gap: 6px;
}
.main-nav ul li a {
    display: block;
    padding: 8px 20px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: 40px;
    transition: var(--transition);
    letter-spacing: 0.3px;
}
.main-nav ul li a:hover {
    color: var(--primary);
    background: rgba(0, 132, 137, 0.06);
}
.main-nav ul li a.active {
    color: var(--white);
    background: var(--primary);
    box-shadow: 0 4px 12px rgba(0, 132, 137, 0.25);
}

/* 头部右侧 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 6px 16px;
    border-radius: 40px;
    border: 1px solid var(--secondary-light);
    transition: var(--transition);
    background: transparent;
    white-space: nowrap;
}
.header-phone:hover {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
    transform: scale(1.02);
}
.header-phone i {
    color: var(--secondary);
    transition: var(--transition);
}
.header-phone:hover i {
    color: white;
}

/* ============================================================
   ✨ 全新精美渐变按钮（登录 & 注册）
   ============================================================ */
.btn-login,
.btn-register {
    padding: 9px 24px;
    border-radius: 40px;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

/* ---- 登录按钮：微渐变边框 + 细腻悬停 ---- */
.btn-login {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid transparent;
    background-image: linear-gradient(var(--off-white), var(--off-white)), 
                      linear-gradient(135deg, #008489, #73c2c7, #cbe4e9);
    background-origin: padding-box, border-box;
    background-clip: padding-box, border-box;
    box-shadow: 0 2px 8px rgba(0, 132, 137, 0.08);
}
.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(115, 194, 199, 0.35);
    background-image: linear-gradient(135deg, #008489, #73c2c7, #cbe4e9), 
                      linear-gradient(135deg, #008489, #73c2c7, #cbe4e9);
    background-origin: padding-box, border-box;
    background-clip: padding-box, border-box;
    color: white;
}

/* ---- 注册按钮：三层渐变 + 光晕扫过动效 ---- */
.btn-register {
    background: linear-gradient(145deg, #008489 0%, #4aafb5 35%, #73c2c7 65%, #cbe4e9 100%);
    background-size: 200% 200%;
    color: white;
    box-shadow: 0 4px 18px rgba(0, 132, 137, 0.30);
    border: none;
    /* 光晕表层 */
    z-index: 1;
}
/* 注册按钮悬停：增强渐变位移 + 上浮 */
.btn-register:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 36px rgba(0, 132, 137, 0.40);
    background-position: 100% 100%;
}
/* 注册按钮的“微光扫过”动效（左侧高光） */
.btn-register::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 50%;
    height: 200%;
    background: rgba(255, 255, 255, 0.20);
    transform: rotate(25deg);
    transition: all 0.6s ease;
    z-index: -1;
    border-radius: 40px;
}
.btn-register:hover::before {
    left: 120%;
}
/* 注册按钮点击反馈 */
.btn-register:active {
    transform: scale(0.96);
    box-shadow: 0 2px 8px rgba(0, 132, 137, 0.20);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}
.hamburger span {
    display: block;
    width: 28px;
    height: 2.5px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================================
   底部（Footer）- 全新浅色背景设计
   ============================================================ */
.site-footer {
    background: linear-gradient(135deg, #f4f9fb 0%, #e8f0f3 50%, #dce8ec 100%);
    color: var(--gray-700);
    padding: 60px 0 0 0;
    margin-top: 80px;
    border-top: 3px solid var(--secondary);
    box-shadow: inset 0 4px 20px rgba(0, 132, 137, 0.03);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;  /* 品牌占 2 份，其余各 1 份 */
    gap: 40px;  /* 稍微缩小间距以适应四列 */
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(0, 132, 137, 0.08);
}

.footer-brand h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.footer-brand h3 span {
    color: var(--secondary);
}
/* 优化后的平台描述文案（加长，更充实） */
.footer-brand .brand-desc {
    font-size: 0.98rem;
    line-height: 1.9;
    max-width: 440px;
    color: var(--gray-600);
    margin-bottom: 24px;
    background: rgba(255, 255, 255, 0.6);
    padding: 18px 24px;
    border-radius: 16px;
    border-left: 4px solid var(--secondary);
    backdrop-filter: blur(4px);
}

.footer-social {
    display: flex;
    gap: 14px;
}
.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.7);
    color: var(--gray-600);
    font-size: 1.2rem;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 132, 137, 0.06);
}
.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 24px rgba(0, 132, 137, 0.20);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    position: relative;
}
.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    display: block;
    width: 28px;
    height: 3px;
    background: var(--secondary);
    border-radius: 2px;
    margin-top: 6px;
}

.footer-links ul li {
    margin-bottom: 12px;
}
.footer-links ul li a {
    color: var(--gray-600);
    transition: var(--transition);
    font-size: 0.95rem;
}
.footer-links ul li a:hover {
    color: var(--primary);
    padding-left: 6px;
}

.footer-contact ul li {
    display: flex;
    gap: 14px;
    margin-bottom: 16px;
    font-size: 0.95rem;
    color: var(--gray-600);
}
.footer-contact ul li i {
    width: 20px;
    color: var(--secondary);
    margin-top: 4px;
    font-size: 1.1rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 0;
    font-size: 0.9rem;
    color: var(--gray-600);
    flex-wrap: wrap;
    gap: 12px;
    border-top: 1px solid rgba(0, 132, 137, 0.06);
    margin-top: 4px;
}
.footer-bottom a {
    color: var(--gray-600);
    transition: var(--transition);
}
.footer-bottom a:hover {
    color: var(--primary);
}
.footer-bottom .icp-link {
    font-weight: 500;
    color: var(--gray-600);
}
.footer-bottom .icp-link:hover {
    color: var(--primary);
}

/* ============================================================
   响应式设计
   ============================================================ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }
    .container {
        padding: 0 20px;
    }

    .hamburger {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        display: none;
        border-bottom: 1px solid rgba(0, 132, 137, 0.1);
        max-height: 80vh;
        overflow-y: auto;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.04);
    }
    .main-nav.open {
        display: block;
    }
    .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }
    .main-nav ul li a {
        padding: 14px 20px;
        border-radius: 12px;
        text-align: center;
        color: var(--gray-900);
    }
    .main-nav ul li a.active {
        background: var(--primary);
        color: white;
    }

    .header-phone .phone-text {
        display: none;
    }
    .header-phone {
        padding: 6px 12px;
        border: none;
        background: transparent;
    }
    .header-phone:hover {
        background: transparent;
        transform: none;
        color: var(--primary);
    }
    .header-phone i {
        font-size: 1.3rem;
        color: var(--primary);
    }

    .btn-login,
    .btn-register {
        padding: 6px 14px;
        font-size: 0.78rem;
    }
    .btn-login {
        border-width: 1px;
    }

    .header-actions {
        gap: 6px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    .footer-brand .brand-desc {
        max-width: 100%;
        padding: 14px 18px;
    }
}

@media (max-width: 480px) {
    .logo-area img {
        height: 32px;
    }
    .site-header {
        height: 70px;
    }
    .main-nav {
        top: 70px;
    }
    .btn-login,
    .btn-register {
        padding: 4px 10px;
        font-size: 0.7rem;
    }
}
        /* ============================================================
           服务大厅 — 精美入口卡片
           ============================================================ */
        .section-hall {
            padding: 60px 0 70px 0;
            background: white;
        }

        .hall-card {
            position: relative;
            background: linear-gradient(145deg, #0a2f33 0%, #008489 45%, #4aafb5 100%);
            border-radius: 32px;
            padding: 50px 56px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0,132,137,0.12);
            transition: all 0.4s ease;
        }
        .hall-card:hover {
            box-shadow: 0 32px 80px rgba(0,132,137,0.18);
            transform: translateY(-4px);
        }

        /* ---- 背景装饰 ----
        .hall-bg-decoration {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            pointer-events: none;
            overflow: hidden;
            border-radius: 32px;
        }
        .hall-bg-decoration .orb {
            position: absolute;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            animation: floatOrb 12s ease-in-out infinite alternate;
        }
        .hall-bg-decoration .orb-1 {
            width: 400px;
            height: 400px;
            top: -150px;
            right: -80px;
            animation-duration: 14s;
        }
        .hall-bg-decoration .orb-2 {
            width: 280px;
            height: 280px;
            bottom: -100px;
            left: -60px;
            animation-duration: 18s;
            animation-delay: 2s;
            background: rgba(255,255,255,0.02);
        }
        .hall-bg-decoration .orb-3 {
            width: 160px;
            height: 160px;
            top: 40%;
            right: 30%;
            animation-duration: 10s;
            animation-delay: 4s;
            background: rgba(255,215,0,0.03);
        }
        @keyframes floatOrb {
            0% { transform: translate(0, 0) scale(1); }
            100% { transform: translate(30px, -20px) scale(1.05); }
        }

        /* ---- 内容布局 ---- */
        .hall-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 40px;
            align-items: center;
        }

        /* ---- 左侧 ---- */
        .hall-left .hall-badge {
            display: inline-block;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            color: rgba(255,255,255,0.85);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 40px;
            letter-spacing: 0.5px;
            border: 1px solid rgba(255,255,255,0.06);
            margin-bottom: 16px;
        }
        .hall-left .hall-badge i { margin-right: 6px; }

        .hall-title {
            font-size: 2.6rem;
            font-weight: 900;
            color: white;
            line-height: 1.15;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .hall-title .highlight {
            background: linear-gradient(135deg, #ffd700, #ffeaa7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hall-desc {
            font-size: 1rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .hall-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .hall-tags .hall-tag {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.8);
            font-size: 0.8rem;
            padding: 6px 16px;
            border-radius: 40px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
        }
        .hall-tags .hall-tag:hover {
            background: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .hall-tags .hall-tag i { font-size: 0.75rem; opacity: 0.7; }

        .hall-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 16px 44px;
            border-radius: 60px;
            border: none;
            background: white;
            color: #0a2f33;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            font-family: var(--font);
            box-shadow: 0 8px 32px rgba(0,0,0,0.08);
        }
        .hall-btn:hover {
            transform: translateY(-4px) scale(1.01);
            box-shadow: 0 16px 48px rgba(0,0,0,0.12);
        }
        .hall-btn i {
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }
        .hall-btn:hover i {
            transform: translateX(6px);
        }

        /* ---- 右侧 ---- */
        .hall-right {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 32px;
        }

        .hall-stats {
            display: flex;
            flex-direction: column;
            gap: 8px;
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(8px);
            border-radius: 20px;
            padding: 24px 28px;
            border: 1px solid rgba(255,255,255,0.04);
            min-width: 140px;
        }
        .hall-stat-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 6px 0;
        }
        .hall-stat-item .hall-stat-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: white;
            line-height: 1;
        }
        .hall-stat-item .hall-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            font-weight: 400;
        }
        .hall-stat-divider {
            height: 1px;
            background: rgba(255,255,255,0.06);
            margin: 2px 0;
        }

        .hall-icon-decoration {
            position: relative;
            width: 72px;
            height: 72px;
            border-radius: 24px;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.2rem;
            color: rgba(255,255,255,0.3);
            flex-shrink: 0;
        }
        .hall-icon-decoration .hall-icon-pulse {
            position: absolute;
            inset: -4px;
            border-radius: 28px;
            border: 1px solid rgba(255,255,255,0.04);
            animation: pulseRing 2.8s ease-in-out infinite;
        }
        @keyframes pulseRing {
            0% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.08); opacity: 0.3; }
            100% { transform: scale(1); opacity: 1; }
        }

        /* ---- 响应式 ---- */
        @media (max-width: 1024px) {
            .hall-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hall-right {
                justify-content: flex-start;
                flex-wrap: wrap;
                gap: 20px;
            }
            .hall-stats {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 12px 20px;
                padding: 18px 24px;
            }
            .hall-stat-item {
                gap: 8px;
            }
            .hall-stat-divider {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .hall-card { padding: 32px 24px; }
            .hall-title { font-size: 2rem; }
            .hall-tags { gap: 6px; }
            .hall-tags .hall-tag { font-size: 0.75rem; padding: 4px 12px; }
            .hall-btn { padding: 14px 32px; font-size: 0.9rem; width: 100%; justify-content: center; }
            .hall-stats { flex-direction: column; width: 100%; }
            .hall-icon-decoration { display: none; }
        }
        @media (max-width: 480px) {
            .hall-title { font-size: 1.6rem; }
            .hall-card { padding: 24px 16px; border-radius: 24px; }
            .hall-stat-item .hall-stat-num { font-size: 1.2rem; }
        }