/* ============================================
   SearsInfo — Magento 电商开发公司官网
   全站样式
   ============================================ */

/* CSS 变量 */
:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #c9a96e;
    --color-accent-light: #e0c89e;
    --color-bg: #ffffff;
    --color-bg-alt: #f7f7f9;
    --color-text: #2d2d3a;
    --color-text-light: #6b6b80;
    --color-border: #e8e8ed;
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', 'Noto Sans SC', serif;
    --container-max: 1200px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 8px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}

ul {
    list-style: none;
}

/* ============================================
   布局容器
   ============================================ */
.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   导航栏
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    gap: 8px;
}

.nav-menu a {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-accent);
    background: rgba(201, 169, 110, 0.08);
}

/* 语言切换 */
.nav-lang {
    display: flex;
    align-items: center;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.lang-switcher-label {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.lang-switcher select {
    border: none;
    background: transparent;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    padding: 2px;
}

.lang-switcher select:focus {
    outline: 1px solid var(--color-accent);
}

/* 汉堡菜单 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
    position: relative;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(201, 169, 110, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(201, 169, 110, 0.08) 0%, transparent 50%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.hero-eyebrow {
    color: var(--color-accent);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    color: #ffffff;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.75);
    max-width: 600px;
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 64px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(201, 169, 110, 0.35);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-accent {
    background: var(--color-accent);
    color: var(--color-primary);
    font-weight: 700;
}

.btn-accent:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(201, 169, 110, 0.35);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============================================
   通用 Section 标题
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-eyebrow {
    color: var(--color-accent);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
}

.section-subtitle {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 16px auto 0;
}

/* ============================================
   服务区域
   ============================================ */
.services {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--color-bg);
    padding: 40px 32px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.service-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 169, 110, 0.1);
    border-radius: 12px;
    color: var(--color-accent);
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ============================================
   客户案例网格
   ============================================ */
.cases {
    padding: 100px 0;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
}

.case-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
}

.case-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

/* 浏览器窗口缩略图 */
.case-thumbnail {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--brand-color, #1a1a2e);
}

.browser-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.browser-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
}

.browser-dot:nth-child(1) { background: #ff5f57; }
.browser-dot:nth-child(2) { background: #febc2e; }
.browser-dot:nth-child(3) { background: #28c840; }

.browser-url {
    flex: 1;
    margin-left: 12px;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.5);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: monospace;
}

.browser-content {
    height: calc(100% - 34px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* 品牌网页模拟 */
.brand-mockup {
    width: 100%;
    max-width: 320px;
}

.mockup-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.mockup-logo {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 2px;
}

.mockup-menu-lines {
    display: flex;
    gap: 4px;
}

.mockup-menu-lines span {
    width: 20px;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 1px;
}

.mockup-hero {
    text-align: center;
    margin-bottom: 24px;
}

.mockup-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 4px;
}

.mockup-sub {
    font-size: 0.7rem;
    color: var(--accent-color, #c9a96e);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.mockup-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.mockup-card {
    aspect-ratio: 3 / 4;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* 悬停遮罩 */
.case-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    opacity: 0;
    transition: opacity var(--transition);
    color: #fff;
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.overlay-text {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.overlay-arrow {
    width: 32px;
    height: 32px;
    transition: transform var(--transition);
}

.case-card:hover .overlay-arrow {
    transform: translateX(6px);
}

/* 案例信息 */
.case-info {
    padding: 24px;
}

.case-industry {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.case-name {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.case-desc {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   CTA 区域
   ============================================ */
.cta {
    padding: 100px 24px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: #fff;
    margin-bottom: 16px;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
}

/* ============================================
   详情页
   ============================================ */
.detail-page {
    padding-top: 72px;
}

.detail-back {
    padding: 24px 0;
    background: var(--color-bg-alt);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--color-text-light);
    transition: color var(--transition);
}

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

/* 详情页 Hero */
.detail-hero {
    background: var(--brand-color, #1a1a2e);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.detail-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 60%);
}

.detail-hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.detail-industry {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--accent-color, #c9a96e);
    letter-spacing: 2px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.detail-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    line-height: 1.2;
}

.detail-brand-en {
    font-size: 0.5em;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.4);
    display: block;
    margin-top: 4px;
}

.detail-short {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
    line-height: 1.8;
}

/* 大号浏览器窗口 */
.browser-window-large {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.browser-content-large {
    height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    background: var(--brand-color, #1a1a2e);
}

.brand-mockup-large {
    max-width: 420px;
}

.brand-mockup-large .mockup-logo {
    font-size: 1.4rem;
}

.brand-mockup-large .mockup-title {
    font-size: 2rem;
}

.brand-mockup-large .mockup-grid {
    grid-template-columns: repeat(4, 1fr);
}

/* 详情页主体 */
.detail-body {
    padding: 80px 0;
}

.detail-content-grid {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 64px;
    align-items: start;
}

.detail-section {
    margin-bottom: 48px;
}

.detail-section-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-border);
}

.detail-description {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-text);
}

/* 特点列表 */
.features-list {
    display: grid;
    gap: 16px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.8;
}

.feature-bullet {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 10px;
    flex-shrink: 0;
}

/* 侧栏 */
.detail-sidebar {
    position: sticky;
    top: 96px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.tech-card,
.info-card {
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--color-border);
}

.tech-card-title,
.info-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.tech-list {
    display: grid;
    gap: 14px;
}

.tech-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--color-text);
    line-height: 1.6;
}

.tech-dot {
    width: 8px;
    height: 8px;
    border: 2px solid var(--color-accent);
    border-radius: 2px;
    transform: rotate(45deg);
    margin-top: 6px;
    flex-shrink: 0;
}

.info-list {
    display: grid;
    gap: 16px;
}

.info-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-row dt {
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-row dd {
    font-size: 0.95rem;
    color: var(--color-text);
}

.info-row dd a {
    color: var(--color-accent);
}

.info-row dd a:hover {
    text-decoration: underline;
}

/* 相关案例 */
.related-cases {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.related-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.related-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.related-thumb {
    aspect-ratio: 16 / 10;
    background: var(--brand-color, #1a1a2e);
    overflow: hidden;
}

.browser-bar-sm {
    padding: 6px 12px;
}

.browser-content-sm {
    height: calc(100% - 26px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
}

.mockup-title-sm {
    font-size: 1rem;
}

.related-info {
    padding: 20px;
}

.related-info h4 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.related-info p {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* ============================================
   通用页面 Hero
   ============================================ */
.page-hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    text-align: center;
}

.page-hero .section-eyebrow {
    color: var(--color-accent);
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.page-subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   关于我们
   ============================================ */
.about-intro {
    padding: 80px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-text h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 24px;
}

.about-text p {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 2;
    margin-bottom: 16px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.about-stat-card {
    text-align: center;
    padding: 32px 16px;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.about-stat-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-sm);
}

.about-stat-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    display: block;
    margin-bottom: 4px;
}

.about-stat-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.about-expertise {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.expertise-item {
    background: var(--color-bg);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.expertise-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-sm);
}

.expertise-item h3 {
    font-size: 1.15rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.expertise-item p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ============================================
   联系页面
   ============================================ */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: start;
}

.contact-info h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 169, 110, 0.1);
    border-radius: 12px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 1rem;
    color: var(--color-text);
}

/* 表单 */
.contact-form-wrap {
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    padding: 40px;
    border: 1px solid var(--color-border);
}

.contact-form {
    display: grid;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text);
}

.required {
    color: #e74c3c;
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 蜜罐字段：移出可视区域，真人看不到，自动填表工具会照填 */
.hp-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* 算术验证码 */
.captcha-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.captcha-question {
    font-size: 1.05rem;
    font-weight: 600;
    white-space: nowrap;
}

.captcha-row input {
    width: 120px;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* 消息提示 */
.messages-area {
    margin-top: 32px;
}

.message {
    padding: 16px 24px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.message.success {
    background: rgba(40, 200, 64, 0.1);
    color: #1a7a32;
    border: 1px solid rgba(40, 200, 64, 0.3);
}

.message.error {
    background: rgba(255, 95, 87, 0.1);
    color: #c0392b;
    border: 1px solid rgba(255, 95, 87, 0.3);
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
    background: var(--color-primary);
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 0;
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a,
.footer-col ul li {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom .footer-icp {
    margin-top: 8px;
}

.footer-icp a {
    color: inherit;
    transition: color var(--transition);
}

.footer-icp a:hover {
    color: var(--color-accent);
}

/* ============================================
   响应式 — 平板
   ============================================ */
@media (max-width: 1024px) {
    .detail-hero-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .detail-content-grid {
        grid-template-columns: 1fr;
    }

    .detail-sidebar {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
    }

    .tech-card,
    .info-card {
        flex: 1;
        min-width: 280px;
    }

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

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

    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

/* ============================================
   响应式 — 手机
   ============================================ */
@media (max-width: 768px) {
    /* 导航栏 */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        gap: 0;
        padding: 16px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        transform: translateY(-200%);
        transition: transform var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-menu a {
        display: block;
        padding: 16px;
        border-radius: 0;
        border-bottom: 1px solid var(--color-border);
    }

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

    /* Hero */
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        gap: 32px;
        justify-content: space-between;
        width: 100%;
    }

    .stat-num {
        font-size: 2rem;
    }

    /* 案例 */
    .cases-grid {
        grid-template-columns: 1fr;
    }

    /* 详情页 */
    .browser-content-large {
        height: 280px;
    }

    /* 关于 */
    .about-stats {
        grid-template-columns: 1fr 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    /* Section padding */
    .services,
    .cases,
    .detail-body,
    .about-intro,
    .about-expertise,
    .contact-section,
    .related-cases {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .section-container {
        padding: 0 16px;
    }

    .nav-container {
        padding: 0 16px;
    }

    .cta {
        padding: 60px 16px;
    }
}

/* ============================================
   动画
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    animation: fadeInUp 0.8s ease-out backwards;
}

.hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content > *:nth-child(2) { animation-delay: 0.2s; }
.hero-content > *:nth-child(3) { animation-delay: 0.3s; }
.hero-content > *:nth-child(4) { animation-delay: 0.4s; }
.hero-content > *:nth-child(5) { animation-delay: 0.5s; }

/* 滚动揭示 */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}