/* ===== 共用样式 - common.css ===== */
/* 所有页面共享的变量、基础样式、导航栏、页脚、悬浮按钮等 */

:root {
    /* 主色系 - 深蓝 + 亮橙 */
    --primary-900: #0d1b2a;
    --primary-700: #1b3a4b;
    --primary-500: #2d5f7a;
    --primary-300: #6ba3be;
    --accent-500: #ff6b35;
    --accent-600: #e55a28;
    --accent-400: #ff8c5a;
    --accent-300: #ffb088;

    /* 中性色 */
    --neutral-950: #0a0a0a;
    --neutral-800: #262626;
    --neutral-600: #525252;
    --neutral-400: #a3a3a3;
    --neutral-200: #e5e5e5;
    --neutral-100: #f5f5f5;
    --neutral-50: #fafafa;

    /* 功能色 */
    --success: #22c55e;
    --warning: #eab308;
    --wechat-green: #07C160;
    --wechat-green-light: #38d97a;
    --wechat-green-dark: #06ae56;

    /* 字体 */
    --font-display: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

    /* 间距 */
    --section-gap: 4rem;
    --section-gap-mobile: 3rem;

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--neutral-800);
    background: var(--neutral-50);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ===== 导航栏 ===== */
.navbar-hw {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--neutral-200);
    transition: all 0.3s ease;
    padding: 0.75rem 0;
}

.navbar-hw.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.navbar-brand img {
    height: 36px;
    width: auto;
}

.navbar-brand .brand-text {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-900);
    letter-spacing: -0.5px;
}

.navbar-brand .brand-sub {
    font-size: 0.65rem;
    color: var(--neutral-400);
    font-weight: 400;
    letter-spacing: 1px;
    display: block;
    margin-top: -2px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--neutral-600);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-700);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-500);
    transition: width 0.3s ease;
}

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

.nav-links a.active {
    color: var(--primary-900);
    font-weight: 600;
}

.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--accent-500) !important;
    color: white !important;
    padding: 0.6rem 1.5rem !important;
    border-radius: var(--radius-sm) !important;
    font-weight: 600 !important;
    transition: all 0.2s ease !important;
    border: none;
}

.nav-cta:hover {
    background: var(--accent-600) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.nav-cta::after {
    display: none !important;
}

/* ===== 移动端底部导航栏 ===== */
.mobile-tab-bar {
    display: none;
    position: fixed;
    bottom: 12px;
    left: 12px;
    right: 12px;
    background: rgba(13, 27, 42, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.06);
    z-index: 999;
    padding: 0 env(safe-area-inset-bottom, 0);
    justify-content: space-around;
    align-items: center;
    height: 56px;
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 16px;
    text-decoration: none;
    color: rgba(255,255,255,0.4);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    -webkit-tap-highlight-color: transparent;
    position: relative;
    border-radius: 12px;
}

.tab-item i {
    font-size: 1.2rem;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tab-item.active {
    background: var(--accent-500);
    color: #1a1a1a;
    box-shadow: 0 2px 12px rgba(255, 107, 53, 0.35);
}

.tab-item.active i {
    color: #1a1a1a;
    transform: scale(1.05);
}

.tab-item::after {
    display: none;
}

/* 点击波纹效果 */
.tab-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.4s ease, opacity 0.4s ease;
    opacity: 0;
}

.tab-item:active::before {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

/* PC/移动端切换 */
@media (max-width: 991px) {
    .desktop-nav {
        display: none;
    }

    .mobile-tab-bar {
        display: flex;
    }

    body {
        padding-bottom: 60px;
    }

    /* 吸顶元素的 top 值需要调整 */
    .filter-section {
        top: 0 !important;
    }
}

/* ===== 区块通用样式 ===== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary-900);
    color: var(--accent-400);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--primary-900);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.section-desc {
    color: var(--neutral-600);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 服务卡片通用样式 ===== */
.service-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--neutral-200);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
    border-color: var(--accent-300);
}

.service-card-image {
    height: 180px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.service-card-image.ai-gradient-1 {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.service-card-image.ai-gradient-2 {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.service-card-image.ai-gradient-3 {
    background: linear-gradient(135deg, #a78bfa, #6366f1);
}

.service-card-image.general-gradient-1 {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

.service-card-image.general-gradient-2 {
    background: linear-gradient(135deg, #43e97b, #38f9d7);
}

.service-card-image i {
    font-size: 3.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.service-card-image .card-tag {
    position: absolute;
    top: 12px;
    left: -5px;
    background: linear-gradient(135deg, var(--accent-500), #ff8c5a);
    color: white;
    padding: 0.35rem 0.9rem 0.35rem 0.7rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
    clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
}

.service-card-image .category-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    background: white;
    color: var(--primary-900);
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.service-card-image .category-tag i {
    font-size: 0.85rem;
}

.service-card-image .category-tag.tag-ai {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.service-card-image .category-tag.tag-website {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: white;
}

.service-card-image .category-tag.tag-app {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: white;
}

.service-card-image .category-tag.tag-mini {
    background: linear-gradient(135deg, #11998e, #057576);
    color: white;
}

.service-card-image .category-tag.tag-system {
    background: linear-gradient(135deg, #ffecd2, #fcb69f);
    color: #0d1b2a;
}

.service-card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-card-title {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--primary-900);
    margin-bottom: 0.5rem;
}

.service-card-desc {
    color: var(--neutral-600);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
    flex: 1;
}

.service-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--neutral-100);
}

.service-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.service-price .currency {
    font-size: 0.85rem;
    color: var(--accent-500);
    font-weight: 600;
}

.service-price .amount {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--accent-500);
}

.service-price .unit {
    font-size: 0.75rem;
    color: var(--neutral-400);
}

.service-card-btn {
    background: var(--primary-900);
    color: white;
    border: none;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
}

.service-card-btn:hover {
    background: var(--accent-500);
    color: white;
    transform: translateY(-1px);
}

.service-card.featured {
    border: 2px solid var(--accent-500);
    position: relative;
}

.service-card.featured::before {
    content: '主推';
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--accent-500);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    z-index: 10;
    letter-spacing: 1px;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--neutral-950);
    color: var(--neutral-400);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-brand img {
    height: 32px;
}

.footer-brand .text {
    font-weight: 600;
    color: white;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--neutral-400);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    font-size: 0.8rem;
}

/* ===== 悬浮咨询按钮 ===== */
.float-consult {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
}

.float-consult .tooltip-text {
    background: white;
    color: var(--primary-900);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    white-space: nowrap;
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.float-consult:hover .tooltip-text {
    opacity: 1;
    transform: translateX(0);
}

.float-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--wechat-green);
    color: white;
    border: none;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(7, 193, 96, 0.4);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(7, 193, 96, 0.5);
}

.float-btn .pulse-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid var(--wechat-green);
    animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* ===== 滚动动画 ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== 底部转化区通用 ===== */
.cta-section {
    padding: var(--section-gap) 0;
    background: linear-gradient(165deg, var(--primary-900), var(--primary-700));
    color: white;
    text-align: center;
}

.cta-section .section-title {
    color: white;
    margin-bottom: 1rem;
}

.cta-section .section-desc {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
}

.cta-section .contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.cta-section .contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.cta-section .contact-item i {
    font-size: 1.5rem;
    color: var(--accent-400);
}

.cta-section .contact-item .info {
    text-align: left;
}

.cta-section .contact-item .info .label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2px;
}

.cta-section .contact-item .info .value {
    font-weight: 600;
    font-size: 0.95rem;
}

.qr-code-section {
    margin-top: 2rem;
}

.qr-code-box {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    display: inline-block;
    margin-bottom: 1rem;
}

.qr-code-box img {
    width: 150px;
    height: 150px;
}

.qr-code-text {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.btn-contact-page {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--wechat-green);
    color: white;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-contact-page:hover {
    background: var(--wechat-green-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(7, 193, 96, 0.3);
}

/* ===== 响应式调整 ===== */
@media (max-width: 767px) {
    :root {
        --section-gap: 3rem;
    }

    .cta-section .contact-info {
        flex-direction: column;
        align-items: center;
    }

    .cta-section .contact-item {
        width: 100%;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

/* ===== 页面通用间距 ===== */
.page-content {
    padding-top: 80px;
}

/* ===== 筛选标签通用 ===== */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-tab {
    background: white;
    border: 1px solid var(--neutral-200);
    padding: 0.6rem 1.25rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--neutral-600);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-tab:hover,
.filter-tab.active {
    background: var(--primary-900);
    color: white;
    border-color: var(--primary-900);
}

/* ===== 面包屑 ===== */
.breadcrumb-section {
    background: var(--neutral-100);
    padding: 1rem 0;
    border-bottom: 1px solid var(--neutral-200);
}

.breadcrumb-section .breadcrumb {
    margin: 0;
    font-size: 0.85rem;
}

.breadcrumb-section .breadcrumb a {
    color: var(--neutral-600);
    text-decoration: none;
}

.breadcrumb-section .breadcrumb a:hover {
    color: var(--accent-500);
}

.breadcrumb-section .breadcrumb .active {
    color: var(--primary-900);
    font-weight: 500;
}