/*
 * 江苏恒毅船务有限公司
 * 风格：钢铁巨轮 · 工程先锋
 * 说明：全站通用样式与板块组件
 */

:root {
    --color-primary: #1565C0;        /* 工程蓝 */
    --color-secondary: #37474F;      /* 钢铁灰 */
    --color-accent: #FFA000;         /* 安全黄 */
    --color-surface: #FFFFFF;
    --color-bg: #ECEFF1;
    --color-muted: #607D8B;
    --color-line: rgba(21, 101, 192, 0.15);
    --color-deep: #0D1B2A;

    --font-display: 'DIN Alternate', 'Segoe UI', 'Microsoft YaHei', sans-serif;
    --font-body: 'PingFang SC', 'Microsoft YaHei', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 32px;

    --shadow-soft: 0 15px 40px rgba(13, 27, 42, 0.12);
    --shadow-card: 0 25px 60px rgba(13, 27, 42, 0.18);

    --max-width: 1200px;
}

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

body {
    font-family: var(--font-body);
    margin: 0;
    color: var(--color-secondary);
    background-color: var(--color-bg);
    line-height: 1.7;
    font-size: 16px;
}

img {
    max-width: 100%;
    display: block;
    border-radius: var(--radius-sm);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-accent);
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.container {
    width: min(100%, var(--max-width));
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-xl) 0;
}

.text-center {
    text-align: center;
}

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

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

.section-title {
    font-size: 2.5rem;
    font-family: var(--font-display);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    color: var(--color-muted);
    font-size: 1.05rem;
    margin-bottom: var(--spacing-lg);
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    padding: 0.2rem 0.9rem;
    border-radius: 999px;
    background-color: rgba(21, 101, 192, 0.12);
    color: var(--color-primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.85rem 1.8rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #0D47A1, var(--color-primary));
    color: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.btn-outline {
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: var(--color-surface);
    background: transparent;
}

.btn-muted {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-line);
}

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

.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-xs);
    color: var(--color-secondary);
}

.icon-badge {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: rgba(21, 101, 192, 0.1);
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.list-dense {
    list-style: disc;
    padding-left: 1.1rem;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.list-dense li {
    margin-bottom: 0.35rem;
}

.list-ticks {
    list-style: none;
    margin: 0;
    padding: 0;
}

.list-ticks li {
    position: relative;
    padding-left: 1.4rem;
    margin-bottom: 0.5rem;
    color: inherit;
}

.list-ticks li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0.1rem;
    color: var(--color-accent);
    font-weight: 600;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(13, 27, 42, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo a {
    color: var(--color-surface);
    font-size: 1.6rem;
    letter-spacing: 0.08em;
    font-weight: 700;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    gap: 1rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85);
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0.75rem;
    bottom: 0;
    width: calc(100% - 1.5rem);
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.nav-link:hover::after {
    opacity: 1;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 110%;
    left: 0;
    min-width: 190px;
    background: rgba(6, 20, 36, 0.95);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0;
    box-shadow: var(--shadow-soft);
}

.nav-item:hover > .dropdown-menu {
    display: block;
}

.dropdown-item a {
    color: rgba(255, 255, 255, 0.85);
    padding: 0.75rem 1.1rem;
    display: block;
}

.dropdown-item a:hover {
    background-color: rgba(21, 101, 192, 0.25);
}

.dropdown-submenu {
    position: relative;
}

.dropdown-submenu > .dropdown-menu {
    left: 100%;
    top: 0;
}

/* Hero */
.hero {
    margin-top: 72px;
    min-height: 70vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    color: var(--color-surface);
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(13, 27, 42, 0.5);
}

.hero-blueprint {
    background: linear-gradient(135deg, #0f1f36 0%, #112b4d 50%, #13437a 100%);
}

.hero-blueprint::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.4;
    mix-blend-mode: screen;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.8rem);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.hero-text {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-md);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: var(--spacing-sm);
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.hero-stat {
    flex: 1;
    min-width: 160px;
    padding: 1rem;
    border-radius: var(--radius-md);
    background: rgba(15, 31, 54, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat strong {
    font-size: 1.8rem;
    display: block;
    color: var(--color-accent);
}

.hero-visual {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.35;
}

.hero-certifications {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: var(--spacing-sm);
}

.hero-certifications span {
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.9);
}

.hero-trust {
    position: relative;
    z-index: 2;
    margin-top: var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-sm);
    background: rgba(15, 31, 54, 0.55);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-trust small {
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 0.2rem;
}

.hero-trust-compact p {
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
}

/* Feature blocks */
.service-card {
    position: relative;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-line);
}

.service-card h3 {
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.service-card p {
    color: var(--color-muted);
}

.section-solutions {
    background-color: var(--color-surface);
}

.section-solutions .section-title {
    color: var(--color-secondary);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.solution-card {
    background: #f7f9fc;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid rgba(13, 27, 42, 0.08);
    box-shadow: var(--shadow-soft);
}

.solution-head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.65rem;
}

.solution-head span {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: rgba(21, 101, 192, 0.15);
    color: var(--color-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.solution-card p {
    color: var(--color-muted);
}

.section-methodology {
    background: #f1f5fb;
}

.process-timeline {
    position: relative;
    padding-left: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.process-timeline::before {
    content: "";
    position: absolute;
    left: 0.7rem;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 2px;
    background: linear-gradient(180deg, rgba(21, 101, 192, 0.15), rgba(21, 101, 192, 0.6));
}

.process-step {
    display: flex;
    gap: 1rem;
    position: relative;
}

.process-step span {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    flex: 0 0 42px;
    box-shadow: var(--shadow-soft);
}

.process-step strong {
    display: block;
    font-size: 1.1rem;
    color: var(--color-secondary);
}

.process-step p {
    margin: 0.35rem 0 0;
    color: var(--color-muted);
}

.section-command {
    background: var(--color-deep);
    color: var(--color-surface);
}

.section-command .section-title {
    color: var(--color-surface);
}

.section-command .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.command-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.command-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-soft);
}

.command-card h3 {
    margin-top: 0;
    color: var(--color-surface);
}

.command-card p {
    color: rgba(255, 255, 255, 0.82);
}

.section-command .list-dense {
    color: rgba(255, 255, 255, 0.75);
}

.data-panels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.data-panel {
    background: linear-gradient(135deg, rgba(21, 101, 192, 0.18), rgba(255, 160, 0, 0.22));
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    color: var(--color-secondary);
}

.data-panel strong {
    font-size: 2rem;
    color: var(--color-primary);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.gallery-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.gallery-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 0;
}

.gallery-card .caption {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.7));
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-sm);
}

.partners-wrap {
    background: #0b1a2f;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.85);
}

.partner-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.partner-logos span {
    border: 1px dashed rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    text-align: center;
    font-size: 0.95rem;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.advantage-card {
    background: rgba(255, 255, 255, 0.96);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-soft);
}

/* Page hero */
.page-hero {
    min-height: 320px;
    background: linear-gradient(120deg, rgba(13, 27, 42, 0.95), rgba(21, 101, 192, 0.7));
    color: #fff;
}

.page-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 70px 70px;
    opacity: 0.4;
}

.page-hero .hero-content {
    max-width: 640px;
}

.pillars-grid,
.pillar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.timeline {
    display: grid;
    gap: var(--spacing-sm);
    position: relative;
    padding-left: 1.5rem;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-line);
}

.timeline-item {
    position: relative;
    padding-left: var(--spacing-sm);
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -21px;
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 0 6px rgba(255, 160, 0, 0.15);
}

.spec-table,
.data-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.spec-table th,
.spec-table td,
.data-table th,
.data-table td {
    padding: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    text-align: left;
}

.spec-table th,
.data-table th {
    background: rgba(21, 101, 192, 0.08);
    color: var(--color-secondary);
}

.case-summary {
    display: grid;
    gap: var(--spacing-sm);
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.case-highlight {
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: rgba(21, 101, 192, 0.07);
}

.news-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: var(--shadow-soft);
}

.news-meta {
    font-size: 0.9rem;
    color: var(--color-muted);
}

.article-hero {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.article-meta {
    display: flex;
    gap: var(--spacing-sm);
    color: var(--color-muted);
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.article-content {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-soft);
}

.job-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.job-card ul {
    list-style: disc;
    padding-left: 1.2rem;
    color: var(--color-muted);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.info-card {
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
}

.map-panel {
    background: rgba(21, 101, 192, 0.08);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    min-height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-muted);
    border: 1px dashed rgba(21, 101, 192, 0.4);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-sm);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-group label {
    font-weight: 600;
    color: var(--color-secondary);
}

.form-group input,
.form-group textarea {
    border: 1px solid rgba(21, 101, 192, 0.2);
    border-radius: var(--radius-sm);
    padding: 0.85rem;
    font-family: var(--font-body);
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.95);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.footer {
    background: #050c15;
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-col h4 {
    color: #fff;
    margin-bottom: 0.75rem;
}

.footer-col ul li {
    margin-bottom: 0.35rem;
}

.footer a {
    color: rgba(255, 255, 255, 0.8);
}

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

.copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-sm);
    text-align: center;
    font-size: 0.9rem;
}

@media (max-width: 992px) {
    .hero {
        padding: 4rem 0;
    }
    .nav-menu {
        display: none;
    }
}

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-lg) 0;
    }
    .hero {
        min-height: 480px;
    }
    .hero-meta {
        flex-direction: column;
    }
    .partner-logos span {
        font-size: 0.85rem;
    }
}