/* ============================================
   智能语音官网 - 全局样式
   设计风格：现代企业级 / 克制无表情 / 弱渐变
   ============================================ */

/* --------- 变量 --------- */
:root {
    --color-primary: #1f3a5f;
    --color-primary-dark: #152a45;
    --color-primary-light: #2c4e7a;
    --color-accent: #e87a3b;
    --color-accent-dark: #cf6327;
    --color-text: #1f2937;
    --color-text-light: #5c6470;
    --color-text-muted: #8b93a1;
    --color-bg: #ffffff;
    --color-bg-soft: #f7f9fc;
    --color-bg-alt: #eef2f7;
    --color-border: #e5e9f0;
    --color-border-dark: #d3d9e3;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
    --shadow-md: 0 4px 12px rgba(16, 24, 40, 0.08);
    --shadow-lg: 0 10px 30px rgba(16, 24, 40, 0.12);
    --transition: 0.2s ease;
}

/* --------- 基础重置 --------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 { margin: 0 0 16px; line-height: 1.35; font-weight: 600; color: var(--color-primary-dark); }
h1 { font-size: 40px; }
h2 { font-size: 30px; }
h3 { font-size: 22px; }
h4 { font-size: 18px; }
p { margin: 0 0 14px; color: var(--color-text-light); }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-fluid { width: 100%; padding: 0 24px; }
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }

/* --------- 按钮 --------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-size: 15px; font-weight: 500;
    line-height: 1.4;
    transition: all var(--transition);
    white-space: nowrap;
    border: 1px solid transparent;
    cursor: pointer;
}
.btn-primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 2px 8px rgba(232, 122, 59, 0.28);
}
.btn-primary:hover { background: var(--color-accent-dark); color: #fff; transform: translateY(-1px); }
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-border-dark);
}
.btn-outline:hover {
    background: var(--color-bg-soft);
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.btn-dark {
    background: var(--color-primary);
    color: #fff;
}
.btn-dark:hover { background: var(--color-primary-dark); color: #fff; }
.btn-block { width: 100%; display: flex; }
.btn-sm { padding: 6px 14px; font-size: 13px; }

/* --------- 顶部栏 --------- */
.top-bar {
    background: var(--color-primary-dark);
    color: #c6d2e3;
    font-size: 13px;
    line-height: 38px;
    height: 38px;
    overflow: hidden;
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; height: 100%; }
.top-bar-left { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.top-bar-left span { display: inline-flex; align-items: center; gap: 6px; }
.top-bar-right a {
    color: #c6d2e3;
    margin-left: 18px;
    font-size: 13px;
}
.top-bar-right a:hover { color: var(--color-accent); }

/* 导航栏（无 top-bar 时作为最顶部，下方 banner 需要 padding-top 抵消 fixed 高度） */
.navbar {
    position: fixed;
    top: 0;
    z-index: 90;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 1px 3px rgba(15, 30, 50, 0.05);
    width: 100%;
    box-sizing: border-box;
    left: 0;
    right: 0;
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 0.5px;
    text-decoration: none;
}
.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0;
}
.brand-logo {
    height: 42px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    display: block;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}
.nav-menu a {
    position: relative;
    color: var(--color-text);
    font-size: 15px;
    font-weight: 500;
    padding: 6px 0;
    display: inline-block;
    text-decoration: none;
}
.nav-menu a.active,
.nav-menu a:hover { color: var(--color-accent); }
.nav-menu a.active::after {
    content: '';
    position: absolute; left: 0; right: 0; bottom: -2px;
    height: 2px; background: var(--color-accent); border-radius: 2px;
}
.nav-cta {
    display: flex;
    align-items: center;
    gap: 14px;
}
.nav-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary-dark);
    font-weight: 600;
    font-size: 16px;
}
.nav-phone svg { width: 18px; height: 18px; color: var(--color-accent); }

/* 移动端导航按钮 */
.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 6px; align-items: center; justify-content: center; }
.nav-toggle span {
    display: block; width: 22px; height: 2px; background: var(--color-primary-dark);
    position: relative; transition: all .25s;
}
.nav-toggle span::before,
.nav-toggle span::after {
    content: ''; position: absolute; left: 0; width: 22px; height: 2px; background: var(--color-primary-dark);
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span::after  { transform: translateY(-7px) rotate(-45deg); }

/* --------- Banner 轮播 - 撑满全屏 --------- */
.banner {
    position: relative;
    background: var(--color-primary-dark);
    overflow: hidden;
    padding-top: 72px; /* 抵消 fixed 导航栏高度 */
}
.banner-slide {
    position: relative;
    min-height: calc(100vh - 72px); /* 其余区域撑满视口 */
    height: auto;
    display: flex; align-items: center;
    background-size: cover;
    background-position: center;
    color: #fff;
}
.banner-slide::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(21, 42, 69, 0.86) 0%, rgba(21, 42, 69, 0.58) 55%, rgba(21, 42, 69, 0.28) 100%);
}
.banner-content { position: relative; z-index: 2; max-width: 640px; padding: 0 24px; }
.banner-subtitle {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    background: rgba(232, 122, 59, 0.18);
    border: 1px solid rgba(232, 122, 59, 0.35);
    color: #ffd1b5;
    font-size: 13px;
    margin-bottom: 18px;
    letter-spacing: 1px;
}
.banner-title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.18;
    margin-bottom: 20px;
    color: #fff;
    letter-spacing: 0.3px;
}
.banner-desc {
    font-size: 17px;
    color: #d5e0ef;
    margin-bottom: 32px;
    max-width: 540px;
}
.banner-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Banner 里的 outline 按钮：hover 不变白色底框，只微微提亮边框 */
.banner-btn-outline {
    color: #fff !important;
    border-color: rgba(255,255,255,0.4);
}
.banner-btn-outline:hover {
    background: transparent;
    border-color: rgba(255,255,255,0.7);
    color: #fff !important;
}

/* Banner 指示点 */
.banner-dots {
    position: absolute; left: 50%; bottom: 28px;
    transform: translateX(-50%);
    display: flex; gap: 10px; z-index: 3;
}
.banner-dot {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(255,255,255,0.35);
    cursor: pointer;
    transition: all var(--transition);
}
.banner-dot.active { width: 30px; border-radius: 5px; background: var(--color-accent); }

/* --------- 通用 section --------- */
.section { padding: 96px 0; }
.section-soft { background: var(--color-bg-soft); }
.section-alt { background: var(--color-bg-alt); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-kicker {
    display: inline-block;
    color: var(--color-accent);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 12px;
    text-transform: uppercase;
}
.section-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}
.section-desc {
    color: var(--color-text-muted);
    max-width: 620px;
    margin: 0 auto;
    font-size: 15px;
}

/* --------- 产品特点 --------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.feature-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all var(--transition);
    position: relative;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.feature-index {
    position: absolute; top: 20px; right: 24px;
    font-size: 52px;
    font-weight: 800;
    color: var(--color-bg-alt);
    line-height: 1;
    font-family: "Helvetica Neue", Arial, sans-serif;
}
.feature-icon {
    width: 56px; height: 56px;
    border-radius: 12px;
    background: var(--color-bg-soft);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
    color: var(--color-primary);
}
.feature-icon svg { width: 28px; height: 28px; }
.feature-card:hover .feature-icon {
    background: var(--color-accent);
    color: #fff;
}
.feature-title {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}
.feature-desc {
    color: var(--color-text-light);
    font-size: 14px;
    line-height: 1.75;
    margin: 0;
    position: relative;
    z-index: 1;
}

/* --------- 对比区 --------- */
.compare-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.compare-col { padding: 48px 40px; }
.compare-col.left { background: #fff; }
.compare-col.right { background: var(--color-primary); color: #fff; }
.compare-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 14px;
    margin-bottom: 16px;
}
.compare-col.left .compare-tag {
    background: var(--color-bg-alt);
    color: var(--color-text-light);
}
.compare-col.right .compare-tag {
    background: rgba(255,255,255,0.14);
    color: #ffd1b5;
}
.compare-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
}
.compare-col.right .compare-title { color: #fff; }
.compare-list { display: flex; flex-direction: column; gap: 18px; }
.compare-item { display: flex; gap: 12px; align-items: flex-start; }
.compare-ic {
    flex: 0 0 22px;
    width: 22px; height: 22px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin-top: 2px;
    font-size: 13px; font-weight: 700;
}
.compare-col.left .compare-ic {
    background: #fde6e1;
    color: #c24b3a;
}
.compare-col.right .compare-ic {
    background: rgba(232,122,59,0.85);
    color: #fff;
}
.compare-item h5 {
    font-size: 15px;
    margin: 0 0 4px;
    font-weight: 600;
}
.compare-col.right .compare-item h5 { color: #fff; }
.compare-item p { margin: 0; font-size: 13px; color: var(--color-text-muted); line-height: 1.6; }
.compare-col.right .compare-item p { color: #bac9de; }

/* --------- 功能介绍 --------- */
.func-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.func-card {
    padding: 40px 28px;
    border-right: 1px solid var(--color-border);
    position: relative;
    transition: all var(--transition);
}
.func-card:last-child { border-right: 0; }
.func-card:hover {
    background: var(--color-bg-soft);
}
.func-num {
    font-size: 14px;
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 14px;
}
.func-card h4 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 12px;
}
.func-card p {
    font-size: 14px;
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.75;
}
.func-card::after {
    content: '';
    position: absolute; left: 28px; right: 28px; bottom: 0;
    height: 2px; background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}
.func-card:hover::after { transform: scaleX(1); }

/* --------- 客户案例 (音频) --------- */
.cases-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 36px;
}
.case-tab {
    padding: 8px 22px;
    border-radius: 22px;
    font-size: 14px;
    color: var(--color-text-light);
    background: #fff;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
}
.case-tab:hover { color: var(--color-primary); border-color: var(--color-border-dark); }
.case-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.case-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}
.case-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}
.case-cover {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    color: #fff;
}
.case-cover img { width: 100%; height: 100%; object-fit: cover; }
.case-play {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    background: rgba(21, 42, 69, 0.35);
    opacity: 0;
    transition: opacity var(--transition);
}
.case-card:hover .case-play { opacity: 1; }
.case-play-btn {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: #fff;
    color: var(--color-accent);
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
    cursor: pointer;
    transition: transform var(--transition);
}
.case-play-btn:hover { transform: scale(1.08); }
.case-play-btn svg {
    width: 26px; height: 26px;
    display: block;
    margin: 0 !important;         /* 取消对 ▶ 图标单独向右的补偿，让 flex 真正居中 */
}
.case-play-btn.playing { background: var(--color-accent); color: #fff; }
.case-cover.has-img .case-play-btn svg { /* 删除 margin-left 补偿 */ }

.case-info { padding: 22px 24px; }
.case-industry {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    background: var(--color-bg-alt);
    color: var(--color-primary);
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 10px;
}
.case-title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-primary-dark);
}
.case-scene {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 14px;
}
.case-desc {
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.7;
    border-top: 1px dashed var(--color-border);
    padding-top: 12px;
    margin: 0;
}
.case-duration {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 12px;
    color: var(--color-accent);
    font-weight: 500;
    margin-left: 8px;
}

/* --------- 音频播放条（底部） --------- */
.audio-bar {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    background: var(--color-primary-dark);
    color: #fff;
    padding: 14px 24px;
    z-index: 100;
    transform: translateY(120%);
    transition: transform 0.35s ease;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
}
.audio-bar.show { transform: translateY(0); }
.audio-inner {
    max-width: 1200px; margin: 0 auto;
    display: flex; align-items: center; gap: 20px;
}
.audio-title {
    flex: 0 0 220px;
    font-size: 14px;
    font-weight: 500;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.audio-controls { display: flex; align-items: center; gap: 14px; }
.audio-ctrl-btn {
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    transition: all var(--transition);
}
.audio-ctrl-btn:hover { background: var(--color-accent); }
.audio-ctrl-btn.play {
    width: 44px; height: 44px;
    background: var(--color-accent);
}
.audio-ctrl-btn.play:hover { background: var(--color-accent-dark); }
.audio-ctrl-btn svg {
    width: 16px; height: 16px;
    display: block;               /* 去掉 inline 默认的下方留白 */
    margin: 0 !important;         /* 取消任何硬编码的 margin 偏移，让 flex 真正居中 */
}
.audio-ctrl-btn.play svg { width: 20px; height: 20px; }
.audio-progress {
    flex: 1;
    display: flex; align-items: center; gap: 12px;
}
.audio-time { font-size: 12px; color: #a9b8ce; min-width: 40px; }
.progress-track {
    flex: 1; height: 4px;
    background: rgba(255,255,255,0.14);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}
.progress-fill {
    position: absolute; left: 0; top: 0; bottom: 0;
    background: var(--color-accent);
    border-radius: 4px;
    width: 0;
}
.audio-close {
    color: #a9b8ce;
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
}
.audio-close:hover { background: rgba(255,255,255,0.08); color: #fff; }

/* --------- 核心优势 --------- */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.adv-item {
    display: flex;
    gap: 22px;
    padding: 32px 28px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}
.adv-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}
.adv-ic {
    flex: 0 0 56px;
    width: 56px; height: 56px;
    border-radius: 14px;
    background: var(--color-primary);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
}
.adv-ic svg { width: 28px; height: 28px; }
.adv-item:hover .adv-ic { background: var(--color-accent); }
.adv-text h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
}
.adv-text p {
    font-size: 14px;
    margin: 0;
    color: var(--color-text-light);
    line-height: 1.75;
}

/* --------- Logo 墙 --------- */
.logo-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.logo-item {
    background: #fff;
    height: 110px;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.logo-item:hover { background: var(--color-bg-soft); }
.logo-item::after {
    content: attr(data-name);
    position: absolute; inset: 0;
    background: var(--color-primary);
    color: #fff;
    font-size: 14px; font-weight: 500;
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
}
.logo-item:hover::after { opacity: 1; }
.logo-placeholder {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

/* --------- 最新动态/文章 --------- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.news-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.news-cover {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary-dark) 100%);
    overflow: hidden;
}
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-card:hover .news-cover img { transform: scale(1.05); }
.news-cover-tag {
    position: absolute; top: 14px; left: 14px;
    background: var(--color-accent);
    color: #fff;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}
.news-body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.news-meta {
    display: flex; align-items: center; gap: 14px;
    font-size: 12px; color: var(--color-text-muted);
    margin-bottom: 10px;
}
.news-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 10px;
    color: var(--color-primary-dark);
    transition: color var(--transition);
}
.news-card:hover .news-title { color: var(--color-accent); }
.news-summary {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.7;
    flex: 1;
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-more {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
}
.news-more svg { width: 14px; height: 14px; transition: transform var(--transition); }
.news-card:hover .news-more { color: var(--color-accent); }
.news-card:hover .news-more svg { transform: translateX(3px); }
.news-top-badge {
    position: absolute; top: 14px; right: 14px;
    padding: 3px 10px;
    border-radius: 4px;
    background: #fff;
    color: var(--color-accent);
    font-size: 12px;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.section-cta-more {
    text-align: center;
    margin-top: 48px;
}

/* --------- 服务流程 --------- */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    position: relative;
    transition: all var(--transition);
}
.service-item:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}
.service-ic {
    width: 52px; height: 52px;
    border-radius: 12px;
    background: var(--color-bg-alt);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
    color: var(--color-primary);
}
.service-item:hover .service-ic {
    background: var(--color-accent);
    color: #fff;
}
.service-ic svg { width: 26px; height: 26px; }
.service-item h4 {
    font-size: 17px; font-weight: 600;
    margin-bottom: 8px;
}
.service-item p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.75;
    margin: 0;
}

/* --------- CTA 联系区 --------- */
.cta-section {
    background: var(--color-primary-dark);
    color: #fff;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 500px; height: 500px;
    background: radial-gradient(circle at 30% 30%, rgba(232,122,59,0.18) 0%, transparent 60%);
    pointer-events: none;
}
.cta-inner {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}
.cta-text h2 {
    color: #fff;
    font-size: 32px;
    margin-bottom: 14px;
}
.cta-text p {
    color: #c6d2e3;
    font-size: 15px;
    margin-bottom: 30px;
    max-width: 520px;
}
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta-actions .btn-outline {
    color: #fff;
    border-color: rgba(255,255,255,0.28);
}
.cta-actions .btn-outline:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.5);
    color: #fff;
}
.cta-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 32px;
}
.cta-card h5 {
    font-size: 15px;
    color: #a9b8ce;
    margin-bottom: 18px;
    font-weight: 500;
}
.cta-phone {
    font-size: 30px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}
.cta-phone-label {
    font-size: 13px;
    color: var(--color-accent);
    margin-bottom: 20px;
    font-weight: 500;
}
.cta-list { display: flex; flex-direction: column; gap: 12px; }
.cta-list-item {
    display: flex; gap: 10px; align-items: flex-start;
    font-size: 14px; color: #c6d2e3;
}
.cta-list-item svg {
    width: 16px; height: 16px;
    flex: 0 0 16px;
    margin-top: 4px;
    color: var(--color-accent);
}

/* --------- 页脚 --------- */
.footer {
    background: #0f1e32;
    color: #95a6be;
    padding-top: 64px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}
.footer-brand .brand {
    color: #fff;
    margin-bottom: 18px;
}
.footer-brand .brand-mark {
    background: var(--color-accent);
}
.footer-desc {
    font-size: 13px;
    line-height: 1.8;
    color: #8a9cb5;
    margin-bottom: 18px;
}
.footer-qr {
    width: 120px; height: 120px;
    background: #fff;
    padding: 8px;
    border-radius: 8px;
}
.footer-qr-placeholder {
    width: 100%; height: 100%;
    background:
        linear-gradient(45deg, #0f1e32 25%, transparent 25%),
        linear-gradient(-45deg, #0f1e32 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #0f1e32 75%),
        linear-gradient(-45deg, transparent 75%, #0f1e32 75%);
    background-size: 10px 10px;
    background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
    background-color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 11px;
    color: #0f1e32;
    font-weight: 600;
}
.footer-col h5 {
    font-size: 15px;
    color: #fff;
    margin-bottom: 18px;
    font-weight: 600;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
    font-size: 13px;
    color: #8a9cb5;
    transition: all var(--transition);
}
.footer-links a:hover { color: var(--color-accent); padding-left: 3px; }
.footer-contact-list { display: flex; flex-direction: column; gap: 12px; }
.footer-contact-item {
    display: flex; gap: 10px; align-items: flex-start;
    font-size: 13px; color: #8a9cb5;
    line-height: 1.7;
}
.footer-contact-item svg {
    width: 15px; height: 15px;
    flex: 0 0 15px;
    margin-top: 3px;
    color: var(--color-accent);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 18px 0;
    font-size: 12px;
    color: #6c7e97;
}
.footer-bottom .container {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 10px;
}
.footer-bottom a { color: #6c7e97; }
.footer-bottom a:hover { color: var(--color-accent); }

/* --------- 文章列表页 --------- */
.page-header {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: #fff;
    /* 顶部 = 内边距 80px + fixed 导航高度 72px（抵消 fixed 后才是真正留白）
       底部 = 80px（与顶部内边距相同，保证对称） */
    padding: 152px 0 80px 0;
    text-align: center;
}
.page-header h1 { color: #fff; margin-bottom: 12px; }
.page-header p { color: #c6d2e3; margin: 0; }
.breadcrumb {
    padding: 18px 0;
    font-size: 13px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}
.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb .sep { margin: 0 8px; }

.news-list-wrap {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    padding: 56px 0;
}
.news-list-main .news-card-row {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 24px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    transition: all var(--transition);
}
.news-card-row:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.news-card-row .news-cover {
    border-radius: var(--radius-md);
    aspect-ratio: 16/10;
}
.news-card-row .news-body { padding: 0; }

.sidebar-box {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}
.sidebar-box h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}
.sidebar-cat-list a {
    display: flex; justify-content: space-between; align-items: center;
    padding: 8px 0;
    font-size: 14px;
    color: var(--color-text-light);
    border-bottom: 1px dashed var(--color-border);
}
.sidebar-cat-list a:last-child { border-bottom: 0; }
.sidebar-cat-list a:hover { color: var(--color-accent); }
.sidebar-cat-list .count {
    font-size: 12px;
    color: var(--color-text-muted);
    background: var(--color-bg-alt);
    padding: 1px 8px;
    border-radius: 10px;
}
.sidebar-hot-item {
    display: flex; gap: 12px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--color-border);
    cursor: pointer;
}
.sidebar-hot-item:last-child { border-bottom: 0; }
.sidebar-hot-rank {
    flex: 0 0 22px;
    width: 22px; height: 22px;
    border-radius: 4px;
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    font-size: 12px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.sidebar-hot-item:nth-child(1) .sidebar-hot-rank,
.sidebar-hot-item:nth-child(2) .sidebar-hot-rank,
.sidebar-hot-item:nth-child(3) .sidebar-hot-rank {
    background: var(--color-accent);
    color: #fff;
}
.sidebar-hot-title {
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.sidebar-hot-item:hover .sidebar-hot-title { color: var(--color-accent); }

/* --------- 文章详情 --------- */
.article-wrap {
    max-width: 860px;
    margin: 0 auto;
    padding: 56px 0;
}
.article-head { margin-bottom: 32px; text-align: center; }
.article-head .cat-tag {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 12px;
    background: var(--color-bg-alt);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 14px;
}
.article-head h1 {
    font-size: 30px;
    line-height: 1.4;
    margin-bottom: 14px;
}
.article-meta {
    display: flex; justify-content: center; gap: 20px;
    font-size: 13px;
    color: var(--color-text-muted);
}
.article-cover {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 16/8;
    background: var(--color-bg-alt);
    margin-bottom: 36px;
}
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-content {
    font-size: 15px;
    line-height: 1.9;
    color: #333a48;
}
.article-content p { margin: 0 0 18px; color: #333a48; }
.article-content h2, .article-content h3 { margin-top: 32px; }
.article-content img { border-radius: var(--radius-md); margin: 16px auto; }
.article-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding: 10px 20px;
    background: var(--color-bg-soft);
    margin: 20px 0;
    color: var(--color-text-light);
}
.article-footer {
    margin-top: 48px;
    padding: 24px 0;
    border-top: 1px solid var(--color-border);
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 14px;
}
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
    padding: 4px 12px;
    background: var(--color-bg-alt);
    color: var(--color-text-light);
    font-size: 12px;
    border-radius: 12px;
}

/* --------- 案例列表页 --------- */
.case-list-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    padding: 56px 0;
}

/* --------- 分页 --------- */
.pagination-wrap { text-align: center; margin-top: 32px; }
.pagination {
    display: inline-flex;
    gap: 6px;
    padding: 0;
}
.pagination li { display: inline; }
.pagination a, .pagination span {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 38px; height: 38px;
    padding: 0 12px;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all var(--transition);
}
.pagination a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.pagination .active span {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.pagination .page-ellipsis span { border: 0; padding: 0 6px; background: transparent; }

/* --------- 返回顶部 --------- */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: #fff;
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    z-index: 80;
}
.back-to-top.show { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background: var(--color-primary); color: #fff; }
.back-to-top svg { width: 18px; height: 18px; }

/* --------- 响应式 --------- */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .func-grid { grid-template-columns: repeat(2, 1fr); }
    .func-card { border-bottom: 1px solid var(--color-border); border-right: 1px solid var(--color-border); }
    .func-card:nth-child(2n) { border-right: 0; }
    .logo-grid { grid-template-columns: repeat(4, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .case-list-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .news-list-wrap { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    h1 { font-size: 28px; }
    h2 { font-size: 24px; }
    .section { padding: 56px 0; }
    .section-header { margin-bottom: 36px; }
    .section-title { font-size: 24px; }

    .top-bar { display: none; }
    .nav-inner { height: 60px; }
    .brand { font-size: 18px; }
    .brand-mark { width: 32px; height: 32px; font-size: 15px; }
    .brand-logo { height: 34px; max-width: 160px; }
    .nav-menu {
        position: fixed;
        top: 60px; left: 0; right: 0;
        flex-direction: column;
        gap: 0;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow-md);
    }
    .nav-menu.open { transform: translateY(0); }
    .nav-menu a {
        width: 100%;
        padding: 14px 24px;
        border-bottom: 1px solid var(--color-border);
    }
    .nav-menu a.active::after { display: none; }
    .nav-phone { display: none; }
    .nav-toggle { display: inline-flex; }

    .banner { padding-top: 60px; }
    .banner-slide { min-height: 82vh; height: auto; }
    .banner-title { font-size: 28px; }
    .banner-desc { font-size: 15px; }
    .page-header { padding: 108px 0 48px 0; }

    .features-grid { grid-template-columns: 1fr; }
    .compare-wrap { grid-template-columns: 1fr; }
    .compare-col { padding: 32px 24px; }
    .func-grid { grid-template-columns: 1fr; }
    .func-card { border-right: 0; border-bottom: 1px solid var(--color-border); }
    .adv-grid { grid-template-columns: 1fr; }
    .service-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: 1fr; }
    .case-list-grid { grid-template-columns: 1fr; }
    .logo-grid { grid-template-columns: repeat(3, 1fr); }
    .logo-item { height: 80px; }

    .cta-section { padding: 56px 0; }
    .cta-inner { grid-template-columns: 1fr; gap: 32px; }
    .cta-text h2 { font-size: 24px; }
    .cta-phone { font-size: 24px; }

    .footer { padding-top: 48px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-col h5 { margin-bottom: 12px; }
    .footer-links {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 8px 14px;
    }
    .footer-links a {
        font-size: 12.5px;
        white-space: nowrap;
    }
    .footer-bottom .container { justify-content: center; text-align: center; }

    .news-list-main .news-card-row {
        grid-template-columns: 1fr;
    }

    .article-head h1 { font-size: 22px; }
    .article-meta {
        flex-wrap: nowrap;
        gap: 10px;
        font-size: 11px;
        justify-content: center;
    }
    .article-meta > span { white-space: nowrap; }

    .audio-inner { flex-wrap: wrap; gap: 12px; }
    .audio-title { flex: 1 1 100%; }
    .audio-progress { order: 3; flex: 1 1 100%; }
}

@media (max-width: 480px) {
    .logo-grid { grid-template-columns: repeat(2, 1fr); }
    .banner { padding-top: 60px; }
    .banner-slide { min-height: 78vh; height: auto; }
    .banner-title { font-size: 22px; }
    .section-title { font-size: 22px; }
}