/* ============================================
   集团风设计体系 — 大气 · 简洁 · 克制
   ============================================ */
:root {
    --color-primary: #b71c1c;
    --color-primary-dark: #961818;
    --color-primary-light: #fdf2f2;
    --color-primary-muted: rgba(183, 28, 28, 0.08);
    --color-primary-border: rgba(183, 28, 28, 0.2);
    --color-brand: var(--color-primary);
    --color-ink: #111827;
    --color-ink-light: #374151;
    --color-muted: #6b7280;
    --color-line: #e5e7eb;
    --color-line-dark: #d1d5db;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fb;
    --color-bg-dark: #0f172a;
    --color-bg-dark-2: #1e293b;
    --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --container: 1280px;
    --section-pad: 100px;
    --radius: 2px;
    --transition: 0.25s ease;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-ink-light);
    line-height: 1.7;
    background: var(--color-bg);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--color-primary-muted);
    color: var(--color-ink);
}

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

ul, ol { list-style: none; }

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

/* 布局 */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 32px;
}

.section {
    padding: var(--section-pad) 0;
    background: var(--color-bg);
}

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

.section--dark {
    background: var(--color-bg-dark);
    color: rgba(255,255,255,0.75);
}

.bg-white { background: var(--color-bg); }
.bg-gray { background: var(--color-bg-alt); }
.bg-dark { background: var(--color-bg-dark); color: #fff; }
.text-center { text-align: center; }

/* 区块标题 */
.section-header {
    margin-bottom: 56px;
    text-align: center;
}

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

.section-header--light .section-title,
.section-header--light .section-desc {
    color: rgba(255,255,255,0.85);
}

.section-header--light .section-label {
    color: rgba(255,255,255,0.5);
}

.section-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 3.5vw, 40px);
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: 0.02em;
    line-height: 1.3;
    margin-bottom: 16px;
}

.section--dark .section-title {
    color: #fff;
}

.section-title::after {
    display: none;
}

.section-desc {
    font-size: 16px;
    color: var(--color-muted);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.8;
    font-weight: 400;
    margin-bottom:20px;
}

.section-desc--left {
    margin: 0;
    max-width: 480px;
}

.section-cta {
    text-align: center;
    margin-top: 56px;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 36px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.btn-ghost {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.4);
}

.btn-ghost:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.08);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-line-dark);
    color: var(--color-ink);
}

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

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary);
    margin-top: 20px;
    letter-spacing: 0.02em;
}

.card-link:hover {
    gap: 12px;
}

.card-link i {
    font-size: 11px;
}

/* 无障碍 */
.skip-link {
    position: absolute;
    top: -100px;
    left: 20px;
    z-index: 10000;
    padding: 10px 16px;
    background: var(--color-primary);
    color: #fff;
    font-size: 14px;
}

.skip-link:focus { top: 10px; }

.visually-hidden {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* 顶栏 */
.top-bar {
    background: var(--color-bg-dark);
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
}

.top-bar-phone {
    color: rgba(255,255,255,0.85);
    font-weight: 500;
}

.top-bar-phone:hover { color: #fff; }

.top-bar-phone i {
    margin-right: 6px;
    font-size: 11px;
    color: var(--color-primary);
}

/* 导航 */
.navbar {
    background: #fff;
    border-bottom: 1px solid var(--color-line);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-inner {
    display: flex;
    align-items: center;
    height: 72px;
    position: relative;
    gap: 32px;
}

.logo img {
    height: 48px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    margin-left: auto;
}

.nav-links a {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-ink-light);
    letter-spacing: 0.02em;
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition);
}

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

.nav-links a.active::after,
.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    flex-shrink: 0;
    padding: 10px 24px;
    font-size: 13px;
    font-weight: 500;
    color: #fff;
    background: var(--color-primary);
    border-radius: var(--radius);
    letter-spacing: 0.04em;
    transition: background var(--transition);
}

.nav-cta:hover {
    background: var(--color-primary-dark);
}

.nav-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-ink);
    transition: all var(--transition);
}

.nav-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-btn.active span:nth-child(2) { opacity: 0; }
.nav-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* Hero */
.hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    align-items: flex-end;
    color: #fff;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(105deg, rgba(15,23,42,0.92) 0%, rgba(15,23,42,0.7) 45%, rgba(15,23,42,0.4) 100%);
}

.hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 120px 32px 80px;
}

.hero-content {
    max-width: 720px;
}

.hero-eyebrow {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.65);
    margin-bottom: 28px;
}

.hero-eyebrow::before {
    content: '';
    display: inline-block;
    width: 28px;
    height: 2px;
    background: var(--color-primary);
    margin-right: 14px;
    vertical-align: middle;
}

.hero h1 {
    font-size: clamp(36px, 5.5vw, 56px);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: 0.02em;
    margin-bottom: 28px;
    color: #fff;
}

.hero-desc {
    font-size: 17px;
    line-height: 1.9;
    color: rgba(255,255,255,0.72);
    margin-bottom: 40px;
    max-width: 560px;
    font-weight: 400;
}

.hero-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    list-style: none;
}

.hero-metric-item {
    position: relative;
    padding: 28px 24px 24px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-top: 3px solid var(--color-primary);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.65s ease, transform 0.65s ease, background 0.25s ease, border-color 0.25s ease;
}

.hero-metrics.is-visible .hero-metric-item {
    opacity: 1;
    transform: translateY(0);
}

.hero-metrics.is-visible .hero-metric-item:nth-child(1) { transition-delay: 0.08s; }
.hero-metrics.is-visible .hero-metric-item:nth-child(2) { transition-delay: 0.18s; }
.hero-metrics.is-visible .hero-metric-item:nth-child(3) { transition-delay: 0.28s; }
.hero-metrics.is-visible .hero-metric-item:nth-child(4) { transition-delay: 0.38s; }

.hero-metric-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(183, 28, 28, 0.35);
}

.metric-num {
    display: block;
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 600;
    color: #fff;
    line-height: 1;
    margin-bottom: 12px;
    font-variant-numeric: tabular-nums;
    min-height: 1em;
}

.metric-num sup {
    font-size: 0.42em;
    font-weight: 500;
    margin-left: 2px;
    color: var(--color-primary);
    vertical-align: super;
}

.metric-num--text {
    color: #fff;
}

.metric-label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.92);
    letter-spacing: 0.04em;
    margin-bottom: 6px;
}

.metric-desc {
    display: block;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.45);
    line-height: 1.5;
    letter-spacing: 0.02em;
}

/* 信任条 */
.trust-strip {
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, #0a1020 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
}

.trust-strip-inner {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
}

.trust-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-left: 3px solid var(--color-primary);
    color: rgba(255, 255, 255, 0.88);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.04em;
    white-space: nowrap;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.55s ease, transform 0.55s ease, background 0.25s ease, border-color 0.25s ease;
}

.trust-strip.is-visible .trust-item {
    opacity: 1;
    transform: translateY(0);
}

.trust-strip.is-visible .trust-item:nth-child(1) { transition-delay: 0.05s; }
.trust-strip.is-visible .trust-item:nth-child(2) { transition-delay: 0.12s; }
.trust-strip.is-visible .trust-item:nth-child(3) { transition-delay: 0.19s; }
.trust-strip.is-visible .trust-item:nth-child(4) { transition-delay: 0.26s; }
.trust-strip.is-visible .trust-item:nth-child(5) { transition-delay: 0.33s; }

.trust-item i {
    color: var(--color-primary);
    font-size: 15px;
    flex-shrink: 0;
}

.trust-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(183, 28, 28, 0.35);
    color: #fff;
}

/* 服务卡片 — 集团风 */
.section-services {
    background: var(--color-bg-alt);
}

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

.service-grid--corp {
    background: transparent;
    border: none;
}

.service-grid--corp .service-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    padding: 40px 36px 32px;
    text-align: left;
    border: 1px solid var(--color-line);
    transition: border-color var(--transition), box-shadow var(--transition);
    overflow: hidden;
}

.service-grid--corp .service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s ease;
}

.service-grid--corp .service-card:hover {
    border-color: var(--color-line-dark);
    box-shadow: 0 12px 40px rgba(15, 23, 42, 0.06);
}

.service-grid--corp .service-card:hover::before {
    transform: scaleX(1);
}

.service-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 28px;
}

.service-index {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.12em;
}

.service-grid--corp .service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    font-size: 16px;
    color: var(--color-muted);
    border: 1px solid var(--color-line);
    background: var(--color-bg-alt);
    transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.service-grid--corp .service-card:hover .service-icon {
    color: var(--color-primary);
    border-color: var(--color-primary-border);
    background: var(--color-primary-muted);
}

.service-grid--corp .service-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 14px;
    letter-spacing: 0.02em;
    line-height: 1.4;
}

.service-summary {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.85;
    margin-bottom: 24px;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
    flex: 1;
}

.service-features li {
    position: relative;
    padding: 10px 0 10px 18px;
    font-size: 13px;
    color: var(--color-ink-light);
    border-bottom: 1px solid var(--color-line);
    letter-spacing: 0.02em;
}

.service-features li:last-child {
    border-bottom: none;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 1px;
    background: var(--color-primary);
    transform: translateY(-50%);
}

.service-card-foot {
    padding-top: 20px;
    border-top: 1px solid var(--color-line);
    margin-top: auto;
}

.service-grid--corp .card-link {
    margin-top: 0;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.service-card p {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.85;
}

/* 类型列表 */
.type-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 960px;
    margin: 0 auto;
}

.type-item {
    display: flex;
    gap: 24px;
    padding: 32px;
    border: 1px solid var(--color-line);
    background: var(--color-bg);
    align-items: flex-start;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.type-item:hover {
    border-color: rgba(15, 23, 42, 0.2);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.type-num {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    flex-shrink: 0;
    width: 28px;
}

.type-item h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 8px;
}

.type-item p {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.8;
}

/* 案例 — 编辑风网格 */
.case-grid--corp {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.case-card {
    border: 1px solid var(--color-line);
    background: var(--color-bg);
    transition: border-color var(--transition);
}

.case-card:hover {
    border-color: var(--color-line-dark);
}

.case-card-img {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.case-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.case-card:hover .case-card-img img {
    transform: scale(1.03);
}

.case-card-body {
    padding: 28px 28px 32px;
}

.case-card-body .case-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    margin-bottom: 12px;
    text-transform: uppercase;
}

.case-card-body h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 8px;
    line-height: 1.4;
}

.case-card-body p {
    font-size: 14px;
    color: var(--color-muted);
}

/* 流程时间线 */
.process-timeline {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
    position: relative;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 48px;
}

.process-timeline-item {
    padding: 0 24px;
    border-right: 1px solid rgba(255,255,255,0.08);
}

.process-timeline-item:last-child { border-right: none; }
.process-timeline-item:first-child { padding-left: 0; }

.process-timeline-num {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.process-timeline-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
}

.process-timeline-item p {
    font-size: 13px;
    color: rgba(255,255,255,0.45);
    line-height: 1.7;
}

/* 优势网格 */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--color-line);
    border: 1px solid var(--color-line);
}

.advantage-item {
    background: var(--color-bg);
    padding: 40px 36px;
}

.advantage-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

.advantage-item p {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.8;
}

/* FAQ */
.faq-list {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--color-line);
    background: var(--color-bg);
    padding: 0 32px;
}

.faq-details {
    border-bottom: 1px solid var(--color-line);
}

.faq-details:last-child {
    border-bottom: none;
}

.faq-details summary {
    padding: 24px 0;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-ink);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.faq-details summary::-webkit-details-marker { display: none; }

.faq-details summary::after {
    content: '+';
    font-size: 18px;
    font-weight: 300;
    color: var(--color-muted);
    flex-shrink: 0;
}

.faq-details[open] summary::after { content: '−'; }

.faq-answer {
    padding: 0 0 24px;
}

.faq-answer p {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.85;
}

/* 新闻 */
.news-grid--corp {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.news-grid--corp .news-card {
    padding: 32px 0;
    border-top: 2px solid var(--color-ink);
    background: transparent;
    box-shadow: none;
    border-radius: 0;
}

.news-grid--corp .news-card:hover {
    transform: none;
    box-shadow: none;
}

.news-date {
    font-size: 12px;
    color: var(--color-muted);
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    display: block;
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 12px;
    line-height: 1.5;
    white-space: normal;
}

.news-title a:hover { color: var(--color-primary); }

.news-desc {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.8;
    display: block;
    -webkit-line-clamp: unset;
}

/* 内页 Banner */
.page-header {
    min-height: 320px;
    background: linear-gradient(105deg, rgba(15,23,42,0.88), rgba(15,23,42,0.6)),
        url('../images/hero-bg.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
}

.page-header h1 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: 0.02em;
}

.page-header p {
    font-size: 16px;
    color: rgba(255,255,255,0.65);
}

/* 内页通用 — 保留兼容 */
.promo-layout {
    display: flex;
    align-items: center;
    gap: 50px;
}

.promo-content { flex: 1; }

.promo-image {
    flex: 1;
    overflow: hidden;
    border: 1px solid var(--color-line);
}

.promo-item {
    display: flex;
    margin-bottom: 24px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-line);
}

.promo-item-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--color-primary);
    margin-right: 20px;
    flex-shrink: 0;
    border: 1px solid var(--color-primary-border);
    background: var(--color-primary-muted);
}

.promo-item-text h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-ink);
}

.promo-item-text p {
    font-size: 14px;
    color: var(--color-muted);
}

/* 旧版案例/服务兼容 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.case-item {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--color-line);
    aspect-ratio: 9/16;
    max-width: 300px;
    background: #000;
}

.case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85), transparent 60%);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    text-align: left;
}

.case-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.case-tag {
    font-size: 11px;
    color: var(--color-primary);
    margin-top: 8px;
    display: inline-block;
    letter-spacing: 0.05em;
}

.service-icon {
    font-size: 28px;
    color: var(--color-primary);
    margin-bottom: 20px;
    display: inline-block;
}

.service-card {
    background: var(--color-bg);
    padding: 40px 30px;
    border: 1px solid var(--color-line);
    text-align: center;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1px;
    background: var(--color-line);
    border: 1px solid var(--color-line);
}

.step-item {
    background: var(--color-bg);
    padding: 32px 20px;
    text-align: center;
}

.step-num {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 16px;
    letter-spacing: 0.1em;
}

.step-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 8px;
}

/* 新闻通用 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.news-card {
    border: 1px solid var(--color-line);
    background: var(--color-bg);
}

.news-img {
    height: 200px;
    width: 100%;
    object-fit: cover;
}

.news-body { padding: 24px; }

.news-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: rgba(255,255,255,0.5);
    padding: 80px 0 32px;
}

.footer-cols {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    margin-bottom: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-col h4 {
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.08em;
    margin-bottom: 24px;
    text-transform: uppercase;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

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

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
}

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

.footer-contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 14px;
    font-size: 14px;
}

.footer-contact-item i {
    width: 24px;
    color: var(--color-primary);
    font-size: 13px;
}

.copyright {
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.35);
}

.footer-qrcode {
    margin-top: 16px;
}

.footer-qrcode img {
    width: 96px;
    height: 96px;
    border: 1px solid rgba(255,255,255,0.1);
    padding: 4px;
    background: #fff;
}

/* 固定表单 */
.fixed-form-wrapper {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 9999;
}

.fixed-form-panel {
    width: 300px;
    background: #fff;
    border: 1px solid var(--color-line);
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.fixed-form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--color-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.04em;
}

.fixed-form-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: var(--radius);
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
    flex-shrink: 0;
}

.fixed-form-close:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

.fixed-form-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    letter-spacing: 0.04em;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(183, 28, 28, 0.25);
    transition: background var(--transition);
}

.fixed-form-trigger:hover {
    background: var(--color-primary-dark);
}

.fixed-form-trigger i {
    font-size: 16px;
}

.fixed-form-wrapper.hidden .fixed-form-panel {
    display: none;
}

.fixed-form-wrapper.hidden .fixed-form-trigger {
    display: flex !important;
}

.fixed-form { padding: 20px; }

.fixed-form-item { margin-bottom: 12px; }

.fixed-form-item input,
.fixed-form-item textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    transition: border-color var(--transition);
}

.fixed-form-item input:focus,
.fixed-form-item textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.fixed-form-submit {
    width: 100%;
    padding: 12px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    letter-spacing: 0.04em;
    transition: background var(--transition);
}

.fixed-form-submit:hover { background: var(--color-primary-dark); }

/* 联系页 */
.contact-form {
    background: var(--color-bg);
    padding: 40px;
    border: 1px solid var(--color-line);
}

.form-group { margin-bottom: 20px; }

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
}

.contact-info-box {
    background: var(--color-bg-alt);
    padding: 40px;
    border: 1px solid var(--color-line);
    height: 100%;
}

.info-item {
    display: flex;
    margin-bottom: 28px;
}

.info-icon {
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    margin-right: 16px;
    flex-shrink: 0;
}

.info-text h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 4px;
}

.info-text p {
    font-size: 14px;
    color: var(--color-muted);
}

/* 文章页 */
.article-content {
    background: var(--color-bg);
    padding: 48px;
    border: 1px solid var(--color-line);
}

.article-header {
    margin-bottom: 40px;
    text-align: center;
    border-bottom: 1px solid var(--color-line);
    padding-bottom: 32px;
}

.article-title {
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 16px;
}

.article-meta {
    font-size: 13px;
    color: var(--color-muted);
}

.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: var(--color-ink-light);
}

.article-body h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 32px 0 16px;
    color: var(--color-ink);
    border-left: 3px solid var(--color-primary);
    padding-left: 12px;
}

.article-nav {
    margin-top: 48px;
    display: flex;
    justify-content: space-between;
    padding-top: 32px;
    border-top: 1px solid var(--color-line);
    font-size: 14px;
}

.article-nav a { color: var(--color-muted); }
.article-nav a:hover { color: var(--color-primary); }

.breadcrumb {
    background: var(--color-bg-alt);
    padding: 16px 0;
    font-size: 13px;
    color: var(--color-muted);
    border-bottom: 1px solid var(--color-line);
}

.breadcrumb a { color: var(--color-ink); }

/* 响应式 */
@media (max-width: 1024px) {
    :root { --section-pad: 72px; }

    .service-grid,
    .service-grid--corp,
    .case-grid--corp,
    .advantage-grid,
    .news-grid--corp {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-timeline {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }

    .process-timeline-item {
        border-right: none;
        padding: 0;
    }
}

@media (max-width: 768px) {
    :root { --section-pad: 56px; }
    .container { padding: 0 20px; }

    .top-bar { display: none; }

    .navbar-inner { height: 64px; }

    .nav-cta { display: none; }

    .nav-btn {
        display: flex;
        margin-left: auto;
        flex-shrink: 0;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 20px 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-line);
        box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    }

    .nav-links.active { display: flex; }

    .nav-links a {
        padding: 14px 0;
        border-bottom: 1px solid var(--color-line);
        width: 100%;
    }

    .hero {
        min-height: auto;
        align-items: center;
    }

    .hero-inner { padding: 80px 20px 48px; }

    .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .hero-metric-item {
        padding: 22px 18px 20px;
    }

    .metric-num {
        font-size: 32px;
        margin-bottom: 10px;
    }

    .metric-label { font-size: 14px; }

    .trust-strip {
        padding: 20px 0;
    }

    .trust-strip-inner {
        gap: 10px;
        justify-content: center;
    }

    .trust-item {
        padding: 10px 16px;
        font-size: 13px;
    }

    .service-grid,
    .service-grid--corp,
    .case-grid--corp,
    .advantage-grid,
    .news-grid,
    .news-grid--corp,
    .process-timeline,
    .process-steps,
    .type-list {
        grid-template-columns: 1fr;
    }

    .type-list { max-width: none; }

    .faq-list {
        max-width: none;
        padding: 0 20px;
    }

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

    .promo-layout { flex-direction: column; }

    .hero-btns .btn { width: 100%; }

    .article-content { padding: 24px; }
    .article-nav { flex-direction: column; gap: 12px; }

    .fixed-form-wrapper {
        display: none !important;
    }
}

/* WOW.js 滚动动画 */
.wow {
    visibility: hidden;
}

.animated.wow {
    visibility: visible;
}

@media (prefers-reduced-motion: reduce) {
    .wow {
        visibility: visible !important;
        animation: none !important;
        transition: none !important;
    }

    .hero-metric-item {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    .trust-item {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
}