/* ===== Voicebridge 技术支持网站 · 全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --brand-blue: #0EA5E9;      /* 主色：天空蓝 */
    --brand-cyan: #06B6D4;      /* 青 */
    --brand-green: #34D399;     /* 绿 */
    --brand-deep: #0F172A;      /* 深文字 */
    --text-dark: #0F172A;
    --text-medium: #475569;
    --text-light: #94A3B8;
    --bg-white: #FFFFFF;
    --bg-soft: #F6FAFF;
    --bg-soft-2: #EFF6FF;
    --border-light: #E2ECF5;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 10px 30px rgba(14, 165, 233, 0.10);
    --shadow-lg: 0 20px 50px rgba(14, 165, 233, 0.16);
    --radius: 18px;
    --gradient-brand: linear-gradient(135deg, #38BDF8 0%, #06B6D4 48%, #34D399 100%);
    --gradient-soft: linear-gradient(135deg, rgba(56,189,248,0.10) 0%, rgba(52,211,153,0.10) 100%);
}

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.7;
    background-color: var(--bg-soft);
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ===== 导航栏 ===== */
.navbar {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    text-decoration: none;
    color: var(--text-dark);
}

.nav-logo img {
    height: 42px;
    width: 42px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    object-fit: cover;
}

.nav-logo-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.1;
}

.nav-logo-text p {
    font-size: 0.72rem;
    color: var(--text-light);
    letter-spacing: 0.02em;
}

.nav-links {
    display: flex;
    gap: 1.75rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-medium);
    font-weight: 500;
    font-size: 0.92rem;
    transition: color 0.2s ease;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--brand-cyan);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -6px;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient-brand);
}

/* ===== Hero 区域 ===== */
.hero {
    position: relative;
    overflow: hidden;
    background: var(--gradient-brand);
    color: #fff;
    padding: 5rem 2rem 4.5rem;
    text-align: center;
}

.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(8px);
    opacity: 0.5;
}

.hero::before {
    width: 360px; height: 360px;
    background: rgba(255,255,255,0.18);
    top: -140px; right: -80px;
}

.hero::after {
    width: 260px; height: 260px;
    background: rgba(255,255,255,0.14);
    bottom: -120px; left: -60px;
}

.hero-content {
    position: relative;
    max-width: 760px;
    margin: 0 auto;
}

.hero-logo {
    width: 112px;
    height: 112px;
    margin: 0 auto 1.6rem;
    border-radius: 26px;
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.25);
    background: #fff;
}

.hero-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-badge {
    display: inline-block;
    padding: 0.35rem 0.95rem;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 999px;
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    margin-bottom: 1.1rem;
    background: rgba(255,255,255,0.12);
}

.hero h2 {
    font-size: 2.6rem;
    margin-bottom: 0.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.hero-tagline {
    font-size: 1.15rem;
    font-weight: 500;
    margin-bottom: 1.1rem;
    opacity: 0.97;
}

.hero p.hero-desc {
    font-size: 1rem;
    color: rgba(255,255,255,0.92);
    line-height: 1.85;
    margin: 0 auto 2rem;
    max-width: 620px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.7rem;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: #fff;
    color: var(--brand-cyan);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.18);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(15,23,42,0.24); }

.btn-ghost {
    background: rgba(255,255,255,0.16);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.55);
}

.btn-ghost:hover { background: rgba(255,255,255,0.26); transform: translateY(-2px); }

/* ===== 内容容器 ===== */
.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 3.5rem 2rem;
}

.section-head {
    text-align: center;
    margin-bottom: 2.5rem;
}

.section-head .eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--brand-cyan);
    background: var(--bg-soft-2);
    padding: 0.3rem 0.9rem;
    border-radius: 999px;
    margin-bottom: 0.9rem;
}

.section-head h2 {
    font-size: 1.85rem;
    font-weight: 750;
    color: var(--text-dark);
    letter-spacing: -0.01em;
}

.section-head p {
    color: var(--text-medium);
    margin-top: 0.6rem;
    font-size: 1rem;
}

/* ===== 功能亮点卡片 ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.4rem;
}

.card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 1.9rem 1.8rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.22s ease, box-shadow 0.22s ease;
    border: 1px solid var(--border-light);
}

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

.card-icon {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 1.2rem;
    box-shadow: var(--shadow-sm);
}

.card h3 {
    font-size: 1.18rem;
    margin-bottom: 0.55rem;
    font-weight: 650;
    color: var(--text-dark);
}

.card p {
    color: var(--text-medium);
    line-height: 1.75;
    font-size: 0.94rem;
}

/* ===== 功能预览 · 截图墙 ===== */
.gallery {
    background: var(--bg-white);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    padding: 2.2rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.6rem;
}

.shot {
    background: var(--bg-soft);
    border-radius: 16px;
    padding: 0.9rem 0.9rem 1rem;
    border: 1px solid var(--border-light);
    text-align: center;
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

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

.shot-frame {
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 6px 18px rgba(15,23,42,0.08);
    aspect-ratio: 9 / 19.5;
}

.shot-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.shot-cap {
    margin-top: 0.8rem;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-dark);
}

.shot-sub {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.15rem;
}

/* ===== 公司信息区块 ===== */
.company-info {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 2.4rem;
    margin-top: 2.2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.company-info h2 {
    font-size: 1.5rem;
    margin-bottom: 1.6rem;
    text-align: center;
    font-weight: 700;
    color: var(--text-dark);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.2rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
    padding: 1.3rem;
    background: var(--bg-soft);
    border-radius: 14px;
    transition: background 0.2s ease;
}

.info-item:hover {
    background: var(--bg-soft-2);
}

.info-icon {
    font-size: 1.5rem;
    min-width: 40px;
    text-align: center;
}

.info-content h4 {
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
    font-weight: 650;
    color: var(--text-dark);
}

.info-content p {
    color: var(--text-medium);
    word-break: break-all;
    font-size: 0.9rem;
}

.info-content a {
    color: var(--brand-cyan);
    text-decoration: none;
    font-weight: 600;
}

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

/* ===== 承诺区块 ===== */
.promise {
    margin-top: 2.2rem;
}
.promise .card-icon { background: var(--bg-soft-2); }

/* ===== 页脚 ===== */
.footer {
    background: var(--brand-deep);
    color: #fff;
    padding: 3rem 2rem 1.8rem;
    margin-top: 3.5rem;
}

.footer-content {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    font-size: 1.05rem;
    margin-bottom: 0.9rem;
    color: #fff;
    font-weight: 600;
}

.footer-section ul { list-style: none; }

.footer-section ul li { margin-bottom: 0.45rem; }

.footer-section a {
    color: rgba(255, 255, 255, 0.68);
    text-decoration: none;
    font-size: 0.88rem;
    transition: color 0.2s ease;
}

.footer-section a:hover { color: #fff; }

.footer-bottom {
    max-width: 1120px;
    margin: 2rem auto 0;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.10);
    text-align: center;
    color: rgba(255, 255, 255, 0.45);
    font-size: 0.82rem;
}

/* ===== 页面标题（内页） ===== */
.page-header {
    background: var(--gradient-soft);
    color: var(--text-dark);
    padding: 3rem 2rem 2.4rem;
    text-align: center;
    border-bottom: 1px solid var(--border-light);
}

.page-header h1 {
    font-size: 2rem;
    margin-bottom: 0.35rem;
    font-weight: 750;
}

.page-header p {
    color: var(--text-medium);
    font-size: 0.98rem;
}

/* ===== 内容页面（法律/支持） ===== */
.content-page {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 2.4rem;
    margin-top: 1.6rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.content-page h2 {
    font-size: 1.4rem;
    margin: 1.75rem 0 0.85rem;
    color: var(--text-dark);
    font-weight: 700;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-light);
}

.content-page h3 {
    font-size: 1.12rem;
    margin: 1.35rem 0 0.55rem;
    color: var(--text-dark);
    font-weight: 650;
}

.content-page p {
    color: var(--text-medium);
    line-height: 1.85;
    margin-bottom: 0.85rem;
    font-size: 0.94rem;
}

.content-page ul {
    margin-left: 1.75rem;
    margin-bottom: 0.85rem;
    color: var(--text-medium);
}

.content-page ul li {
    margin-bottom: 0.45rem;
    line-height: 1.75;
    font-size: 0.94rem;
}

.content-page a { color: var(--brand-cyan); text-decoration: none; font-weight: 500; }
.content-page a:hover { text-decoration: underline; }

.highlight-box {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--gradient-soft);
    border-radius: 12px;
    border-left: 4px solid var(--brand-cyan);
}

.highlight-box strong { color: var(--text-dark); }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 0.7rem;
        padding: 0.7rem 1.25rem;
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    .hero { padding: 3.5rem 1.25rem 3rem; }
    .hero h2 { font-size: 1.95rem; }
    .hero-tagline { font-size: 1rem; }
    .container { padding: 2.4rem 1.25rem; }
    .gallery { padding: 1.4rem; }
    .gallery-grid { grid-template-columns: 1fr; }
    .company-info, .content-page { padding: 1.6rem; }
    .card-grid { grid-template-columns: 1fr; }
}