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

:root {
    --primary: #0066cc;
    --primary-light: #e6f0ff;
    --primary-dark: #004a99;
    --secondary: #00a8e8;
    --accent: #00a8e8;
    --bg-light: #f8fafd;
    --bg-card: #ffffff;
    --text-primary: #1a2332;
    --text-secondary: #5a6478;
    --border-color: #e2e8f4;
    --shadow: 0 4px 24px rgba(0,102,204,0.08);
    --shadow-hover: 0 12px 40px rgba(0,102,204,0.18);
    --gradient: linear-gradient(135deg, #0066cc 0%, #004a99 100%);
}


body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-light);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* 背景 */
.background-animation {
    display: none;
}

/* 粒子效果 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* 粒子隐藏 */
.particles {
    display: none;
}

/* 头部 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 0.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    height: 50px;
    width: auto;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.3));
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--text-primary);
}

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

/* 主内容 */
.main-content {
    padding-top: 88px;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
    overflow: visible;
}

/* Hero区域 */
.hero {
    text-align: center;
    padding: 4rem 0 6rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.title-word {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: title-glow 3s ease-in-out infinite;
    background-size: 200% 200%;
}

.title-word:nth-child(2) { animation-delay: 0.2s; }
.title-word:nth-child(3) { animation-delay: 0.4s; }

@keyframes title-glow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    animation: fadeInUp 1s ease 0.5s both;
}

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

/* 分区 */
.section {
    margin-bottom: 5rem;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.title-icon {
    font-size: 1.5rem;
}

/* 卡片网格 */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* 高端卡片效果 */
.card {
    position: relative;
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform-style: preserve-3d;
    perspective: 1000px;
    box-shadow: 0 4px 24px rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.15);
}

.card-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.card-border {
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(236, 72, 153, 0.1));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    transition: all 0.5s ease;
}

.card-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: skewX(-25deg);
    transition: left 0.7s ease;
    pointer-events: none;
}

.card-content {
    position: relative;
    z-index: 1;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: inline-block;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

/* 卡片悬浮效果 */
.card:hover {
    transform: translateY(-10px) rotateX(5deg) rotateY(-5deg);
    box-shadow: 
        0 25px 50px -12px rgba(99, 102, 241, 0.3),
        0 0 40px rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.4);
}

.card:hover .card-glow {
    opacity: 1;
}

.card:hover .card-border {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.card:hover .card-shine {
    left: 150%;
}

.card:hover .card-icon {
    transform: scale(1.2) rotate(-10deg);
}

.card:hover .card-title {
    color: var(--primary-light);
}

/* 卡片点击效果 */
.card:active {
    transform: translateY(-5px) scale(0.98);
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        padding: 1rem 1.5rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .main-content {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

/* 动画入场效果 */
.card {
    opacity: 0;
    animation: cardFadeIn 0.6s ease forwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 玻璃态效果增强 */
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 50%);
    border-radius: 20px;
    pointer-events: none;
}

/* 鼠标跟随光效 */
.card.mouse-over::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

/* 业务卡片网格 */
.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* 业务卡片样式 */
.business-card {
    position: relative;
    background: var(--bg-card);
    border-radius: 16px;
    padding: 1.8rem;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.12);
    display: flex;
    gap: 1.2rem;
    align-items: flex-start;
}

.business-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, transparent 50%);
    border-radius: 16px;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.business-card:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 20px 40px -12px rgba(99, 102, 241, 0.25),
        0 0 30px rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
}

.business-card:hover::before {
    opacity: 1;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
}

/* 业务编号 */
.business-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    flex-shrink: 0;
    transition: all 0.4s ease;
    opacity: 0.6;
}

.business-card:hover .business-number {
    opacity: 1;
    transform: scale(1.1);
}

/* 业务内容 */
.business-content {
    flex: 1;
}

.business-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.business-card:hover .business-title {
    color: var(--primary-light);
}

.business-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* 业务卡片动画 */
.business-card {
    opacity: 0;
    animation: businessCardFadeIn 0.6s ease forwards;
}

.business-card:nth-child(1) { animation-delay: 0.05s; }
.business-card:nth-child(2) { animation-delay: 0.1s; }
.business-card:nth-child(3) { animation-delay: 0.15s; }
.business-card:nth-child(4) { animation-delay: 0.2s; }
.business-card:nth-child(5) { animation-delay: 0.25s; }
.business-card:nth-child(6) { animation-delay: 0.3s; }
.business-card:nth-child(7) { animation-delay: 0.35s; }
.business-card:nth-child(8) { animation-delay: 0.4s; }
.business-card:nth-child(9) { animation-delay: 0.45s; }
.business-card:nth-child(10) { animation-delay: 0.5s; }
.business-card:nth-child(11) { animation-delay: 0.55s; }
.business-card:nth-child(12) { animation-delay: 0.6s; }
.business-card:nth-child(13) { animation-delay: 0.65s; }
.business-card:nth-child(14) { animation-delay: 0.7s; }
.business-card:nth-child(15) { animation-delay: 0.75s; }

@keyframes businessCardFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .business-grid {
        grid-template-columns: 1fr;
    }
    
    .business-number {
        font-size: 2rem;
    }
    
    .business-title {
        font-size: 1.05rem;
    }
}

/* ==========================================================
 * 公共业务页样式补丁（crypto 三级页专用）
 * 2026-07-13 为补齐 .business-hero / .business-nav /
 * .business-detail-card / .feature-* / .gradient-orb 等
 * HTML 已使用的 class 名而添加。
 * ========================================================== */

/* ----- 全局容器与背景 ----- */
.main-content {
    padding-top: 88px;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
    overflow: visible;
}

.background-animation {
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    overflow: hidden;
}

.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.55;
    animation: orbFloat 12s ease-in-out infinite;
}
.orb-1 { width: 480px; height: 480px; top: -120px; left: -120px;
         background: radial-gradient(circle, rgba(0,102,204,0.45), transparent 70%);
         animation-delay: 0s; }
.orb-2 { width: 420px; height: 420px; bottom: -140px; right: -100px;
         background: radial-gradient(circle, rgba(0,168,232,0.40), transparent 70%);
         animation-delay: -4s; }
.orb-3 { width: 380px; height: 380px; top: 40%; right: 25%;
         background: radial-gradient(circle, rgba(99,102,241,0.30), transparent 70%);
         animation-delay: -8s; }
@keyframes orbFloat {
    0%, 100% { transform: translate(0,0) scale(1); }
    50%      { transform: translate(40px,-30px) scale(1.08); }
}

/* ----- Hero 区 ----- */
.business-hero {
    position: relative;
    overflow: hidden;
    border-radius: 0;
    margin: 0;
    box-shadow: none;
    color: #fff;
    isolation: isolate;
}
.business-hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    transform: scale(1.02);
}
.business-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,74,153,0.65) 0%, rgba(0,102,204,0.50) 50%, rgba(0,168,232,0.45) 100%);
    z-index: 1;
}
.business-hero-content {
    position: relative;
    z-index: 2;
    padding: 88px 56px;
    max-width: 880px;
}
.business-hero-title {
    font-size: 44px;
    font-weight: 800;
    letter-spacing: 1px;
    margin: 0 0 16px;
    line-height: 1.2;
    color: #fff;
    text-shadow: 0 2px 18px rgba(0,0,0,0.25);
}
.business-hero-subtitle {
    font-size: 18px;
    color: rgba(255,255,255,0.92);
    margin: 0;
    line-height: 1.7;
    max-width: 720px;
}

/* ----- 业务导航 businessNav ----- */
.business-nav {
    position: sticky;
    top: 68px;
    z-index: 50;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,102,204,0.10);
    padding: 14px 20px;
    margin-bottom: 36px;
    border: 1px solid rgba(0,102,204,0.08);
}
.business-nav.stuck {
    box-shadow: 0 12px 40px rgba(0,102,204,0.18);
}
.business-nav-container {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}
.business-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    background: #f8fafd;
    border: 2px solid transparent;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    min-width: 100px;
}
.business-nav-item:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,102,204,0.15);
}
.business-nav-item.active {
    background: var(--primary);
    border-color: var(--primary);
}
.business-nav-item.active .nav-icon svg { color: #fff; }
.nav-icon { font-size: 2rem; line-height: 1; display: inline-flex; }
.nav-icon svg { color: var(--primary); transition: all 0.3s; }
.nav-text { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); white-space: nowrap; }
.business-nav-item.active .nav-text { color: #fff; }

/* ----- 业务列表 ----- */
/* ----- 业务卡片 business-detail-card ----- */
.business-list { margin-top: 2rem; }
.business-detail-card {
    background: #fff;
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}
.business-detail-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient);
    opacity: 1;
}
.business-detail-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}
.business-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}
.business-number-large {
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    min-width: 80px;
}
.business-title-large {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}
.business-category {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--primary-light);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 700;
}
.business-body {
    margin-left: 95px;
}
.business-desc-large {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}
.business-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 1rem;
    background: #f8fafd;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}
.feature-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
}
.feature-icon svg { color: var(--primary); }
.feature-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}
.feature-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.business-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.tag {
    padding: 0.4rem 0.9rem;
    background: var(--primary-light);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--primary);
    border: 1px solid rgba(0,102,204,0.15);
    text-decoration: none;
    display: inline-block;
    transition: all 0.25s;
}
.tag:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-1px);
}
@media (max-width: 768px) {
    .business-header { flex-direction: column; align-items: flex-start; }
    .business-body { margin-left: 0; }
    .business-number-large { font-size: 2.5rem; }
    .business-title-large { font-size: 1.3rem; }
    .business-detail-card { padding: 1.2rem; }
    .business-hero-title { font-size: 28px; letter-spacing: 3px; }
    .business-hero-subtitle { font-size: 14px; letter-spacing: 2px; }
    .business-hero {
      height: 200px;
      min-height: 0;
      margin: 0 0 1.5rem;
      margin-left: calc(50% - 50vw);
      border-radius: 0;
    }
}

/* ==========================================================================
 *  统一补丁（2026-07-14）：让 banner 与 DEMO 一致
 *  - .business-hero / .business-hero-bg / .business-hero-content / title/subtitle
 *    与 6 个 DEMO 子页完全一致的 400px 居中艺术字风格
 *  - ::before 蒙板（脉动）+ ::after 扫光（动画），与 DEMO 一致
 *  - .content-section / .section-title / .section-subtitle 与 DEMO 一致
 *  - .standards-grid / .standard-card / .card-* 与 DEMO 一致
 *  - 不动本文件原有的其他样式（如已有 .business-card / .business-features 等）
 *  - 不动其他模块
 *  - 2026-07-14 补：解除 .content-section max-width 限制，让 standards-grid 能放 3 列
 * ========================================================================== */

.business-hero {
  position: relative;
  height: 400px;
  margin: 0 0 3rem;
  margin-left: calc(50% - 50vw);
  border-radius: 0;
  overflow: hidden;
  width: 100vw;
  max-width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
}
.business-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center bottom;
  z-index: 1;
  transform: none;
}
.business-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(0, 26, 51, 0.45) 0%,
    rgba(0, 51, 102, 0.35) 50%,
    rgba(0, 26, 51, 0.45) 100%);
  z-index: 2;
  animation: maskFlow 10s ease-in-out infinite;
}
.business-hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(0, 168, 232, 0.2) 25%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(0, 168, 232, 0.2) 75%,
    transparent 100%);
  animation: scanLine 8s linear infinite;
  pointer-events: none;
  z-index: 3;
}
@keyframes maskFlow {
  0%, 100% { opacity: 0.45; }
  50%      { opacity: 0.35; }
}
@keyframes scanLine {
  0%   { left: -100%; }
  100% { left: 100%; }
}
.business-hero-content {
  position: relative;
  z-index: 4;
  text-align: center;
}
.business-hero-title {
  font-size: 64px;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: 12px;
  color: #ffffff;
  font-family: 'Microsoft YaHei', 'PingFang SC', 'STHeiti', 'SimHei', sans-serif;
  text-shadow:
    0 2px 4px rgba(0, 0, 0, 0.3),
    0 4px 8px rgba(0, 0, 0, 0.2),
    0 0 30px rgba(0, 212, 255, 0.4),
    0 0 50px rgba(0, 168, 232, 0.3);
  animation: titleFloat 3s ease-in-out infinite;
  position: relative;
}
.business-hero-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #00d4ff, transparent);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.8);
}
@keyframes titleFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}
.business-hero-subtitle {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 8px;
  color: #ffffff;
  font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
  text-shadow:
    0 2px 4px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(0, 212, 255, 0.5);
  opacity: 0.95;
  animation: subtitleGlow 3s ease-in-out infinite alternate;
}
@keyframes subtitleGlow {
  from {
    text-shadow:
      0 2px 4px rgba(0, 0, 0, 0.4),
      0 0 20px rgba(0, 212, 255, 0.5);
  }
  to {
    text-shadow:
      0 2px 4px rgba(0, 0, 0, 0.4),
      0 0 30px rgba(0, 212, 255, 0.8),
      0 0 40px rgba(0, 168, 232, 0.6);
  }
}
@media (max-width: 1024px) {
  .business-hero {
    height: 320px;
    min-height: 0;
  }
  .business-hero-title { font-size: 46px; letter-spacing: 6px; }
  .business-hero-subtitle { font-size: 20px; letter-spacing: 4px; }
}
@media (max-width: 768px) {
  .business-hero {
    height: 200px;
    min-height: 0;
    margin: 0 0 1.5rem;
    margin-left: calc(50% - 50vw);
    border-radius: 0;
  }
  .business-hero-bg {
    object-fit: cover;
    object-position: center 70%;
  }
  .business-hero-title { font-size: 28px; letter-spacing: 3px; }
  .business-hero-subtitle {
    font-size: 14px;
    letter-spacing: 2px;
    white-space: normal;
    padding: 0 16px;
  }
}
@media (max-width: 480px) {
  .business-hero {
    height: 180px;
    min-height: 0;
  }
  .business-hero-title { font-size: 24px; letter-spacing: 2px; }
  .business-hero-subtitle { font-size: 13px; letter-spacing: 1px; }
}

/* ===== 内容区（与 DEMO 03-相关标准 一致）===== */
.content-section {
  max-width: none !important;
  margin: 3rem 0 4rem !important;
  padding: 0 !important;
  background: transparent !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  border: none !important;
}
main.main-content > .content-section:first-of-type {
  margin-top: 3rem !important;
}
.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-left: 1rem;
  border-left: 5px solid var(--primary);
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  padding-left: 1rem;
}

/* ===== 标准卡片网格（与 DEMO 03-相关标准 一致）===== */
.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.5rem;
}
.standard-card {
  background: #fff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.standard-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s;
}
.standard-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.standard-card:hover::before { opacity: 1; }
.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.card-icon {
  width: 48px; height: 48px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.card-icon svg {
  color: var(--primary);
  width: 28px; height: 28px;
}
.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin: 0;
}
.card-badge {
  display: inline-block;
  position: static !important;
  top: auto !important;
  right: auto !important;
  padding: 0.25rem 0.75rem;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.5rem;
}
.card-description {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-top: 1rem;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}
.card-tag {
  padding: 0.3rem 0.7rem;
  background: #f8fafd;
  color: var(--primary);
  border-radius: 6px;
  font-size: 0.8rem;
  border: 1px solid var(--border-color);
}
@media (max-width: 1024px) {
  .standards-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
}
@media (max-width: 768px) {
  .standards-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 1.5rem; }
}