/* ============================================================
   爱迪厚德（北京）管理咨询有限公司 — 官网样式表
   风格：商务稳重 · 正式大气 · 政企适配
   主色：藏青 #1a2a3a / 深蓝 #0d1b2a / 浅金 #c9a96e / 米白 #f5f0e8
   ============================================================ */

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

:root {
    /* 主色系 */
    --primary: #0d1b2a;
    --primary-light: #1a2a3a;
    --primary-mid: #243447;
    --accent: #c9a96e;
    --accent-light: #dfc488;
    --accent-dim: #a8874a;
    /* 背景 */
    --bg: #f8f6f3;
    --bg-alt: #f0ece6;
    --bg-card: #ffffff;
    --bg-dark: #0d1b2a;
    /* 文字 */
    --text: #2d2d2d;
    --text-dim: #6b6b6b;
    --text-light: #999999;
    --text-white: #f0ece6;
    --text-muted: #b8b0a0;
    /* 边框 */
    --border: #e0d8d0;
    --border-light: #f0ece6;
    /* 其他 */
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 12px rgba(13, 27, 42, 0.06);
    --shadow-hover: 0 8px 24px rgba(13, 27, 42, 0.1);
    --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-dim); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }

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

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== Header ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(13, 27, 42, 0.08);
}

.header-inner {
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon { font-size: 1.6rem; }

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 2px;
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 400;
    letter-spacing: 1px;
    padding-left: 10px;
    border-left: 1px solid var(--border);
    margin-left: 4px;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav a {
    padding: 6px 14px;
    font-size: 0.9rem;
    color: var(--text-dim);
    font-weight: 500;
    border-radius: 6px;
    transition: var(--transition);
    white-space: nowrap;
}

.nav a:hover,
.nav a.active {
    color: var(--primary);
    background: rgba(13, 27, 42, 0.04);
}

.nav-cta {
    background: var(--primary) !important;
    color: var(--text-white) !important;
    padding: 8px 20px !important;
    border-radius: 6px !important;
    font-weight: 600 !important;
    margin-left: 8px;
}

.nav-cta:hover {
    background: var(--primary-light) !important;
    color: white !important;
}

/* Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==================== Hero ==================== */
.hero {
    min-height: 90vh;
    padding: 100px 0 80px;
    background: var(--primary);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('assets/images/banners/hero-bg.jpg') center/cover no-repeat;
    z-index: 0;
    animation: heroZoom 20s ease-in-out infinite alternate;
}

/* Dark gradient overlay — elegant navy brand feel */
.hero-bg::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(135deg,
        rgba(13,27,42,0.82) 0%,
        rgba(13,27,42,0.6) 35%,
        rgba(13,27,42,0.65) 65%,
        rgba(13,27,42,0.85) 100%);
    z-index: 1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 700px;
    height: 700px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 169, 110, 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

@keyframes heroZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.06); }
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 20px;
    background: rgba(201, 169, 110, 0.15);
    color: var(--accent-light);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 24px;
    border: 1px solid rgba(201, 169, 110, 0.2);
    text-transform: uppercase;
}

.hero-text h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.25;
    color: white;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.hero-text .highlight {
    color: var(--accent-light);
    position: relative;
}

.hero-text .highlight::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    width: 100%;
    height: 6px;
    background: rgba(201,169,110,0.18);
    border-radius: 4px;
    z-index: -1;
}

.hero-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.9;
    margin-bottom: 36px;
    max-width: 540px;
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 36px 32px;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
}

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

.hero-stat-num {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--accent-light);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.hero-stat-label {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.6);
    font-weight: 500;
    letter-spacing: 2px;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-decoration: none;
}

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

.btn.primary:hover {
    background: var(--accent-light);
    color: var(--primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(201, 169, 110, 0.3);
}

.btn.outline {
    background: transparent;
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn.outline:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    background: rgba(201, 169, 110, 0.08);
}

.btn.full {
    width: 100%;
}

/* ==================== Sections ==================== */
.section {
    padding: 88px 0;
}

.section.alt {
    background: var(--bg-alt);
    position: relative;
}

.section.alt::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(ellipse at 70% 30%, rgba(201,169,110,0.03) 0%, transparent 70%),
                radial-gradient(ellipse at 20% 70%, rgba(13,27,42,0.02) 0%, transparent 60%);
    pointer-events: none;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header.left {
    text-align: left;
    margin-left: 0;
}

.section-tag {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 4px;
    background: rgba(201, 169, 110, 0.1);
    color: var(--accent-dim);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

/* Gold accent line below section titles */
.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--accent);
    margin: 16px auto 0;
    border-radius: 2px;
}

.section-header.left .section-title::after {
    margin-left: 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.section-desc {
    margin-top: 12px;
    font-size: 1rem;
    color: var(--text-dim);
    line-height: 1.7;
}

/* ==================== Services ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-card {
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.service-icon {
    font-size: 2rem;
    margin-bottom: 16px;
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(201,169,110,0.12) 0%, rgba(201,169,110,0.04) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}

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

/* ==================== Why Us ==================== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.why-item {
    padding: 28px 20px;
    text-align: center;
}

.why-num {
    font-size: 2.2rem;
    font-weight: 900;
    color: rgba(201, 169, 110, 0.15);
    margin-bottom: 12px;
    line-height: 1;
}

.why-item h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.why-item p {
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.7;
}

/* ==================== Cases ==================== */
.case-filters {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
}

.filter-btn {
    padding: 8px 22px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-dim);
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.filter-btn:hover:not(.active) {
    border-color: var(--accent);
    color: var(--primary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.case-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin: 20px 0 0 20px;
    border-radius: 4px;
}

.tag-private {
    background: rgba(13, 27, 42, 0.06);
    color: var(--primary);
}

.tag-state {
    background: rgba(201, 169, 110, 0.1);
    color: var(--accent-dim);
}

.case-body {
    padding: 12px 20px 24px;
}

.case-body h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
}

.case-meta {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 10px;
}

.case-desc {
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 14px;
}

.case-result {
    font-size: 0.85rem;
    color: var(--accent-dim);
    font-weight: 600;
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
}

.case-result span {
    font-weight: 400;
    color: var(--text-dim);
}

/* ==================== Team ==================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.team-card {
    background: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.team-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.team-avatar {
    font-size: 3rem;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    overflow: hidden;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    border-radius: 50%;
}

.team-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.team-title {
    display: block;
    font-size: 0.8rem;
    color: var(--accent-dim);
    font-weight: 500;
    margin-bottom: 12px;
}

.team-card p {
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.7;
}

/* ==================== Process ==================== */
.process-steps {
    max-width: 800px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 0;
}

.step-num {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 0 0 4px rgba(201,169,110,0.12);
    border: 2px solid rgba(201,169,110,0.25);
}

.step-content h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--text-dim);
}

.process-connector {
    width: 2px;
    height: 24px;
    background: var(--border);
    margin-left: 23px;
}

/* ==================== About ==================== */
.about-content {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-intro p {
    font-size: 1rem;
    color: var(--text-dim);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
}

.af-icon {
    font-size: 1.2rem;
}

.af-text {
    font-size: 0.88rem;
    color: var(--text);
    font-weight: 500;
}

/* ==================== Insights ==================== */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.insight-card {
    background: var(--bg-card);
    padding: 28px 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.insight-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.insight-date {
    font-size: 0.78rem;
    color: var(--text-light);
    margin-bottom: 8px;
    font-weight: 500;
}

.insight-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    line-height: 1.5;
}

.insight-card p {
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 14px;
}

.insight-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-dim);
}

/* ==================== Contact ==================== */
.contact-section {
    background: var(--primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: url('assets/images/banners/hero-bg.jpg') center/cover no-repeat;
    opacity: 0.08;
    z-index: 0;
}

.contact-section .container {
    position: relative;
    z-index: 1;
}

.contact-section .section-tag {
    background: rgba(201, 169, 110, 0.15);
}

.contact-section .section-title {
    color: white;
}

.contact-section .section-desc {
    color: var(--text-muted);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 28px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.ci-icon {
    font-size: 1.2rem;
    margin-top: 2px;
}

.ci-label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.ci-value {
    display: block;
    font-size: 0.95rem;
    color: var(--text-white);
    font-weight: 500;
}

/* Form */
.contact-form {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--radius-lg);
}

.contact-form h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--text);
    background: var(--bg);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.contact-form .btn.primary.full {
    margin-top: 4px;
}

/* ==================== Footer ==================== */
.footer {
    background: var(--bg-dark);
    color: var(--text-muted);
    padding: 50px 0 0;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.3fr 2fr;
    gap: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-logo {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: 2px;
}

.footer-brand p {
    font-size: 0.85rem;
    margin-top: 8px;
}

.footer-idea {
    color: var(--accent-dim) !important;
    font-style: italic;
    font-size: 0.8rem !important;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 12px;
}

.footer-col a {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

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

.footer-bottom {
    padding: 16px 0;
    font-size: 0.8rem;
    text-align: center;
}

.footer-bottom a {
    color: var(--accent-dim);
}

/* ==================== Shimmer Animation ==================== */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.shimmer-text {
    background: linear-gradient(90deg, var(--accent-dim) 25%, var(--accent-light) 50%, var(--accent-dim) 75%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 3s linear infinite;
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    .services-grid,
    .cases-grid,
    .team-grid,
    .insights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner { height: 60px; }
    .logo-sub { display: none; }

    .nav {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: var(--shadow-hover);
    }

    .nav.open { display: flex; }
    .nav a { padding: 12px 14px; width: 100%; }
    .nav-cta { margin-left: 0; margin-top: 8px; text-align: center; }

    .menu-toggle { display: flex; }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .hero-text h1 { font-size: 2rem; }
    .hero-stats { flex-direction: row; padding: 24px; justify-content: space-around; }
    .hero-stat-num { font-size: 1.8rem; }

    .section { padding: 60px 0; }
    .section-title { font-size: 1.6rem; }

    .services-grid,
    .cases-grid,
    .team-grid,
    .insights-grid {
        grid-template-columns: 1fr;
    }

    .why-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .why-item { padding: 20px 16px; }
    .why-num { font-size: 1.8rem; }

    .about-content {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .about-features {
        grid-template-columns: 1fr 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .case-filters {
        flex-wrap: wrap;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    .process-step {
        gap: 14px;
    }

    .page-section {
        padding: 60px 0;
    }

    .page-banner .section-title {
        font-size: 1.8rem;
    }

    .stats-bar .stat-num {
        font-size: 2.2rem;
    }

    .stats-bar .stat-item + .stat-item {
        border-left: none;
    }
}

@media (max-width: 480px) {
    .hero-text h1 { font-size: 1.6rem; }
    .hero-stats { flex-wrap: wrap; gap: 16px; }
    .hero-stat { width: calc(50% - 8px); }
    .hero-stat-num { font-size: 1.4rem; }
    .why-grid { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; }
    .stats-bar { gap: 24px; padding: 32px 20px; }
    .stats-bar .stat-num { font-size: 1.8rem; }
    .results-highlight { gap: 20px; }
    .results-highlight .rh-num { font-size: 1.6rem; }
    .page-banner .section-title { font-size: 1.5rem; }
}

/* ============================================================
   新增组件样式 — 多页扩展
   ============================================================ */

/* ==================== Page Banner（内页通用Hero） ==================== */
.page-banner {
    padding: 120px 0 60px;
    background: var(--primary);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(135deg,
        rgba(13,27,42,0.78) 0%,
        rgba(13,27,42,0.55) 40%,
        rgba(13,27,42,0.68) 100%);
    z-index: 0;
}

.page-banner::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 169, 110, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.page-banner.banner-cases {
    background: var(--primary) url('assets/images/banners/digital.png') center/cover no-repeat;
}

.page-banner.banner-team {
    background: var(--primary) url('assets/images/banners/company-photo.jpg') center/cover no-repeat;
}

.page-banner.banner-about {
    background: var(--primary) url('assets/images/banners/about-banner.png') center/cover no-repeat;
}

.page-banner.banner-process {
    background: var(--primary) url('assets/images/banners/culture.png') center/cover no-repeat;
}

.page-banner.banner-services {
    background: var(--primary) url('assets/images/banners/digital.png') center/cover no-repeat;
}

.page-banner .section-tag,
.page-banner .section-title,
.page-banner .section-desc,
.page-banner .banner-breadcrumb {
    position: relative;
    z-index: 1;
}

.page-banner .section-tag {
    background: rgba(201, 169, 110, 0.12);
    color: var(--accent-light);
}

.page-banner .section-title {
    color: white;
    font-size: 2.4rem;
    text-shadow: 0 2px 16px rgba(0,0,0,0.4);
}

.page-banner .section-desc {
    color: rgba(255,255,255,0.7);
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.page-banner .banner-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.page-banner .banner-breadcrumb a {
    color: var(--accent-light);
}

.page-banner .banner-breadcrumb .sep {
    color: rgba(255,255,255,0.2);
}

/* ==================== Back to Top ==================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--accent-light);
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 16px rgba(13, 27, 42, 0.2);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

/* ==================== Mobile CTA Bar ==================== */
.mobile-cta-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: white;
    border-top: 1px solid var(--border-light);
    padding: 10px 16px;
    z-index: 998;
    gap: 10px;
    box-shadow: 0 -2px 12px rgba(13, 27, 42, 0.06);
}

.mobile-cta-bar .btn {
    flex: 1;
    text-align: center;
    font-size: 0.88rem;
    padding: 10px 16px;
}

@media (max-width: 768px) {
    .mobile-cta-bar {
        display: flex;
    }
    .back-to-top {
        bottom: 80px;
        right: 16px;
    }
    body {
        padding-bottom: 70px;
    }
}

/* ==================== Client Logo Strip ==================== */
.client-strip {
    padding: 40px 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-light);
    overflow: hidden;
}

.client-strip-title {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-light);
    letter-spacing: 2px;
    margin-bottom: 24px;
    font-weight: 500;
}

.client-marquee {
    display: flex;
    gap: 48px;
    animation: marquee 30s linear infinite;
    width: max-content;
}

.client-marquee:hover {
    animation-play-state: paused;
}

.client-logo-item {
    flex-shrink: 0;
    padding: 8px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dim);
    white-space: nowrap;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg);
    letter-spacing: 1px;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ==================== Enhanced Case Cards ==================== */
.case-card-full {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition);
}

.case-card-full:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.case-card-full .case-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.case-card-full .case-header h3 {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--primary);
    flex: 1;
    min-width: 200px;
}

.case-card-full .case-section {
    margin-bottom: 14px;
}

.case-card-full .case-section h4 {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--accent-dim);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.case-card-full .case-section p,
.case-card-full .case-section li {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.8;
}

.case-card-full .case-section ul {
    list-style: none;
    padding: 0;
}

.case-card-full .case-section ul li::before {
    content: '· ';
    color: var(--accent);
    font-weight: 700;
}

.case-card-full .case-result-bar {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border-light);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.case-result-item {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent-dim);
}

.case-result-item span {
    font-weight: 400;
    color: var(--text-dim);
}

/* ==================== Filter Bar ==================== */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-bottom: 16px;
}

.filter-bar + .filter-bar {
    margin-bottom: 32px;
}

.filter-label {
    font-size: 0.78rem;
    color: var(--text-light);
    font-weight: 600;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    margin-right: 4px;
}

/* ==================== Stats Bar ==================== */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 48px;
    padding: 48px 32px;
    background: linear-gradient(135deg, var(--primary) 0%, #152535 50%, var(--primary-light) 100%);
    border-radius: var(--radius-lg);
    margin-bottom: 48px;
    flex-wrap: wrap;
    position: relative;
    overflow: hidden;
}

.stats-bar::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: url('assets/images/banners/digital.png') center/cover no-repeat;
    opacity: 0.08;
    z-index: 0;
}

.stats-bar .stat-item {
    text-align: center;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

.stats-bar .stat-item + .stat-item {
    border-left: 1px solid rgba(255,255,255,0.08);
}

.stats-bar .stat-num {
    display: block;
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent-light);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.stats-bar .stat-lbl {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 8px;
    letter-spacing: 1px;
}

/* ==================== Image + Text Section ==================== */
.img-text-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.img-text-section .img-block {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-hover);
}

.img-text-section .img-block img {
    width: 100%;
    height: auto;
    display: block;
}

.img-text-section.reverse {
    direction: rtl;
}

.img-text-section.reverse .text-block {
    direction: ltr;
}

@media (max-width: 768px) {
    .img-text-section {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .img-text-section.reverse {
        direction: ltr;
    }
}

/* ==================== CTA Section with Background ==================== */
.cta-section-bg {
    padding: 80px 0;
    background: linear-gradient(rgba(13,27,42,0.82), rgba(13,27,42,0.78)),
                url('assets/images/banners/cta-bg.png') center/cover no-repeat;
    text-align: center;
    color: white;
}

.cta-section-bg .section-title {
    color: white;
}

.cta-section-bg p {
    color: var(--text-muted);
}

/* ==================== Results Highlight Banner ==================== */
.results-highlight {
    background: linear-gradient(135deg, rgba(201,169,110,0.1) 0%, rgba(201,169,110,0.04) 100%);
    border: 1px solid rgba(201,169,110,0.15);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    margin-bottom: 48px;
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    text-align: center;
}

.results-highlight .rh-item {
    flex: 1;
    min-width: 150px;
}

.results-highlight .rh-num {
    display: block;
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--accent-dim);
    line-height: 1.2;
}

.results-highlight .rh-desc {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 6px;
}

/* ==================== Enhanced Team Cards ==================== */
.team-card-full {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.team-card-full:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.team-card-full .team-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--accent-dim);
    flex-shrink: 0;
    border: 2px solid var(--border-light);
    overflow: hidden;
}

.team-card-full .team-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    border-radius: 50%;
}

.team-card-full .team-photo .photo-initial {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--accent-dim);
}

.team-card-full .team-info {
    flex: 1;
}

.team-card-full .team-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 2px;
}

.team-card-full .team-role {
    display: block;
    font-size: 0.82rem;
    color: var(--accent-dim);
    font-weight: 500;
    margin-bottom: 8px;
}

.team-card-full .team-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.team-tag {
    display: inline-block;
    padding: 2px 10px;
    font-size: 0.72rem;
    font-weight: 500;
    border-radius: 4px;
    background: rgba(13, 27, 42, 0.04);
    color: var(--text-dim);
    letter-spacing: 0.5px;
}

.team-card-full .team-bio {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.8;
}

.team-card-full .team-bio-more {
    display: none;
    margin-top: 8px;
}

.team-card-full .team-bio-toggle {
    display: inline-block;
    margin-top: 8px;
    font-size: 0.82rem;
    color: var(--accent-dim);
    cursor: pointer;
    font-weight: 600;
    background: none;
    border: none;
    padding: 0;
}

.team-card-full .team-bio-toggle:hover {
    color: var(--accent);
}

/* ==================== Team Showcase (Home Page) ==================== */
.team-showcase {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 16px;
}

.showcase-item {
    text-align: center;
    padding: 24px 16px 20px;
    transition: var(--transition);
}

.showcase-item:hover {
    transform: translateY(-6px);
}

.showcase-photo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 16px;
    border: 3px solid var(--accent);
    box-shadow: 0 0 0 8px rgba(201,169,110,0.08), 0 8px 24px rgba(13,27,42,0.12);
}

.showcase-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    border-radius: 50%;
}

.showcase-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.showcase-item span {
    display: block;
    font-size: 0.82rem;
    color: var(--accent-dim);
    font-weight: 500;
    margin-bottom: 8px;
}

.showcase-item p {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.5;
}

@media (max-width: 768px) {
    .team-showcase {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .showcase-photo {
        width: 110px;
        height: 110px;
    }
}

@media (max-width: 480px) {
    .team-showcase {
        grid-template-columns: 1fr 1fr;
    }
    .showcase-photo {
        width: 96px;
        height: 96px;
    }
}

/* Team section grouping */
.team-group-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin: 32px 0 16px;
    padding-left: 16px;
    border-left: 3px solid var(--accent);
}

.team-group-title:first-child {
    margin-top: 0;
}

@media (max-width: 600px) {
    .team-card-full {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .team-card-full .team-tags {
        justify-content: center;
    }
}

/* ==================== Accordion (FAQ / Expandable) ==================== */
.accordion-item {
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    margin-bottom: 8px;
    overflow: hidden;
    background: var(--bg-card);
}

.accordion-trigger {
    width: 100%;
    padding: 16px 20px;
    text-align: left;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-trigger:hover {
    background: rgba(13, 27, 42, 0.02);
}

.accordion-trigger .arrow {
    transition: transform 0.3s ease;
    font-size: 0.7rem;
    color: var(--text-light);
}

.accordion-item.open .accordion-trigger .arrow {
    transform: rotate(180deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.accordion-item.open .accordion-body {
    max-height: 2000px;
}

.accordion-body-inner {
    padding: 0 20px 20px;
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.8;
}

/* ==================== Tab Component ==================== */
.tab-nav {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: 32px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-btn {
    padding: 12px 24px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dim);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--accent);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* ==================== Timeline ==================== */
.timeline {
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 4px;
    bottom: 4px;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-bottom: 32px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -28px;
    top: 2px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--accent);
}

.timeline-year {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--accent-dim);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.timeline-content h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.timeline-content p {
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.7;
}

/* Horizontal timeline */
.h-timeline {
    display: flex;
    gap: 0;
    position: relative;
    padding: 20px 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.h-timeline::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 60px;
    right: 60px;
    height: 2px;
    background: var(--border);
}

.h-timeline-item {
    flex: 1;
    min-width: 160px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.h-timeline-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    margin: 0 auto 16px;
    position: relative;
    z-index: 2;
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--accent);
}

.h-timeline-phase {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent-dim);
    letter-spacing: 1px;
}

.h-timeline-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin: 6px 0;
}

.h-timeline-desc {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .h-timeline {
        flex-direction: column;
        gap: 24px;
    }
    .h-timeline::before {
        display: none;
    }
    .h-timeline-item {
        display: flex;
        gap: 16px;
        text-align: left;
        align-items: flex-start;
    }
    .h-timeline-dot {
        margin: 6px 0 0;
        flex-shrink: 0;
    }
}

/* ==================== Card Grid Variants ==================== */
.cases-grid-wide {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.team-grid-wide {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .cases-grid-wide {
        grid-template-columns: 1fr;
    }
}

/* ==================== Insight Cards Enhanced ==================== */
.insight-card-wide {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    gap: 0;
}

.insight-card-wide:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.insight-card-wide .insight-img {
    width: 200px;
    min-height: 160px;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    flex-shrink: 0;
}

.insight-card-wide .insight-body {
    padding: 24px;
    flex: 1;
}

.insight-card-wide .insight-date {
    font-size: 0.78rem;
    color: var(--text-light);
    margin-bottom: 8px;
    font-weight: 500;
}

.insight-card-wide h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    line-height: 1.5;
}

.insight-card-wide p {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 12px;
}

@media (max-width: 600px) {
    .insight-card-wide {
        flex-direction: column;
    }
    .insight-card-wide .insight-img {
        width: 100%;
        min-height: 120px;
    }
}

/* ==================== Form Enhancements ==================== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-check-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.form-check-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-dim);
    cursor: pointer;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: var(--transition);
    background: var(--bg);
}

.form-check-group input:checked + span {
    color: var(--accent-dim);
    font-weight: 600;
}

.form-check-group label:has(input:checked) {
    border-color: var(--accent);
    background: rgba(201, 169, 110, 0.06);
}

.form-radio-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.form-radio-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-dim);
    cursor: pointer;
}

.form-group label.field-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: #d32f2f;
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.08);
}

.field-error {
    font-size: 0.78rem;
    color: #d32f2f;
    margin-top: 4px;
    display: none;
}

.field-error.show {
    display: block;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ==================== Impact Banner (Home Page) ==================== */
.impact-banner {
    padding: 64px 0;
    background: linear-gradient(rgba(13,27,42,0.8), rgba(13,27,42,0.75)),
                url('assets/images/banners/digital.png') center/cover no-repeat;
    position: relative;
}

.impact-banner::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(ellipse at 30% 50%, rgba(201,169,110,0.05) 0%, transparent 70%);
    pointer-events: none;
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
    z-index: 1;
    text-align: center;
}

.impact-item {
    padding: 20px;
}

.impact-num {
    font-size: 3.6rem;
    font-weight: 900;
    color: var(--accent-light);
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.impact-num span {
    font-size: 2rem;
    font-weight: 600;
}

.impact-lbl {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.55);
    margin-top: 8px;
    letter-spacing: 1px;
    font-weight: 500;
}

@media (max-width: 768px) {
    .impact-banner {
        padding: 48px 0;
    }
    .impact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .impact-num {
        font-size: 2.6rem;
    }
}

@media (max-width: 480px) {
    .impact-num {
        font-size: 2.2rem;
    }
}

/* ==================== Empty State ==================== */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-light);
}

.empty-state .empty-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.empty-state p {
    font-size: 0.95rem;
}

/* ==================== Page Section Spacing ==================== */
.page-section {
    padding: 88px 0;
}

.page-section.alt {
    background: var(--bg-alt);
}

/* ==================== Service Detail Sections ==================== */
.service-detail-block {
    padding: 48px 0;
    border-bottom: 1px solid var(--border-light);
}

.service-detail-block:last-child {
    border-bottom: none;
}

.service-detail-block .service-header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 24px;
}

.service-detail-block .service-detail-icon {
    font-size: 2.5rem;
    width: 64px;
    height: 64px;
    border-radius: 12px;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.service-detail-block h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.service-detail-block .service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.service-detail-block .service-intro {
    font-size: 1rem;
    color: var(--text-dim);
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-sub-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.service-sub-item {
    padding: 14px 16px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.6;
}

.service-sub-item strong {
    display: block;
    color: var(--primary);
    margin-bottom: 4px;
}

@media (max-width: 600px) {
    .service-sub-items {
        grid-template-columns: 1fr;
    }
    .service-detail-block .service-header {
        flex-direction: column;
    }
}

/* ==================== Model Diagram (CSS-only) ==================== */
.model-diagram {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 32px 0;
}

.model-center {
    grid-column: 2;
    grid-row: 1 / 3;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-lg);
    padding: 32px 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.model-center .model-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.model-center .model-sub {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.model-node {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

.model-node:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-hover);
}

.model-node .node-icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.model-node .node-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.model-node .node-desc {
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.5;
}

@media (max-width: 768px) {
    .model-diagram {
        grid-template-columns: 1fr 1fr;
    }
    .model-center {
        grid-column: 1 / -1;
        grid-row: auto;
        order: -1;
    }
}

@media (max-width: 480px) {
    .model-diagram {
        grid-template-columns: 1fr;
    }
}