/* --------------------------------------------------
 * 四川鼎富贸易有限公司 2025 重构主题样式
 * 设计主题：产业融合・价值共创
 * -------------------------------------------------- */

/* 1. Design Tokens */
:root {
    --color-primary: #0D4F3C;
    --color-primary-dark: #052C1F;
    --color-secondary: #FFD700;
    --color-accent: #21D4A7;
    --color-emerald: #1B8756;
    --color-forest: #063526;
    --color-mist: #F4FBF8;
    --color-cloud: #E6F3EC;
    --color-text-dark: #142423;
    --color-text-light: #F4FFF8;
    --color-border: rgba(255, 255, 255, 0.15);

    --gradient-primary: linear-gradient(125deg, #0D4F3C 0%, #1B8756 55%, #33C694 100%);
    --gradient-secondary: linear-gradient(135deg, #FFD700 0%, #FFB347 100%);
    --gradient-panel: linear-gradient(145deg, rgba(13, 79, 60, 0.85), rgba(3, 31, 24, 0.92));

    --font-family-main: 'Microsoft YaHei', 'Source Han Sans SC', 'PingFang SC', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.7;

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

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

    --shadow-soft: 0 10px 30px rgba(8, 29, 21, 0.2);
    --shadow-card: 0 20px 45px rgba(6, 53, 38, 0.22);
}

/* 2. Global Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-main);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text-dark);
    background: radial-gradient(circle at 10% 20%, rgba(33, 198, 148, 0.08), transparent 40%),
                radial-gradient(circle at 80% 0%, rgba(255, 215, 0, 0.12), transparent 50%),
                #F8FFFA;
    min-height: 100vh;
}

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

ul { list-style: none; }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

p { margin-bottom: var(--spacing-sm); }

/* 3. Layout */
.container {
    width: min(1200px, 90vw);
    margin: 0 auto;
}

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

.section.dark {
    background: #031F18;
    color: var(--color-text-light);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header span {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 999px;
    background: rgba(255, 215, 0, 0.15);
    color: var(--color-forest);
    font-size: 0.85rem;
    letter-spacing: 2px;
}

.section-header h2 {
    font-size: 2.4rem;
    margin: var(--spacing-sm) 0;
    color: var(--color-primary);
}

.section.dark .section-header h2,
.section.dark .section-header span,
.section.dark .section-header p {
    color: var(--color-text-light);
}

.section-header p {
    max-width: 720px;
    margin: 0 auto;
    color: rgba(20, 36, 35, 0.8);
}

/* 4. Reusable Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.8rem;
    border-radius: 999px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-text-light);
    box-shadow: var(--shadow-soft);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: #3E2800;
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: var(--color-text-light);
}

.btn:hover {
    transform: translateY(-3px);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(33, 198, 148, 0.1);
    color: var(--color-primary);
    font-size: 0.85rem;
}

.card {
    background: #FFFFFF;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.card.glass {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text-light);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
}

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

.section.dark .card h3 { color: var(--color-text-light); }

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

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(13, 79, 60, 0.08);
    text-align: center;
}

.stat-card strong {
    display: block;
    font-size: 2rem;
    color: var(--color-primary);
}

/* 5. Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(5, 33, 25, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar {
    height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.logo a {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

.menu-toggle {
    display: none;
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: var(--color-text-light);
    padding: 0.45rem 0.9rem;
    border-radius: 12px;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
}

.nav-item { position: relative; }

.nav-item > a {
    color: var(--color-text-light);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0.5rem 0;
}

.nav-item > a::after {
    content: '';
    display: block;
    width: 0%;
    height: 2px;
    margin-top: 4px;
    background: var(--color-secondary);
    transition: width 0.3s ease;
}

.nav-item > a:hover::after { width: 100%; }

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: #FFFFFF;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-soft);
    padding: var(--spacing-xs) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1.25rem;
    color: var(--color-primary);
}

.dropdown-menu a:hover {
    background: rgba(13, 79, 60, 0.08);
}

.nav-item.active .dropdown-menu,
.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

main { padding-top: 88px; }

/* 6. Hero */
.hero {
    position: relative;
    padding: var(--spacing-xl) 0;
    background: var(--gradient-primary);
    color: var(--color-text-light);
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    inset: -150px;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.15), transparent 50%);
    opacity: 0.6;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-highlight {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
}

.hero-panels {
    display: grid;
    gap: var(--spacing-sm);
}

.hero-panel {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    background: rgba(3, 31, 24, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-panel strong {
    display: block;
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xs);
}

/* 7. Honeycomb Product Matrix */
.honeycomb-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    justify-items: center;
}

.hex-card {
    width: 210px;
    aspect-ratio: 1 / 1.05;
    background: #FFFFFF;
    position: relative;
    padding: 1.5rem 1rem;
    text-align: center;
    color: var(--color-primary);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    box-shadow: var(--shadow-soft);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.hex-card::after {
    content: '';
    position: absolute;
    inset: 6px;
    border: 1px solid rgba(13, 79, 60, 0.12);
    border-radius: 24px;
    clip-path: inherit;
}

.hex-card span {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.hex-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card);
}

/* 8. Supply Chain Panorama */
.flow-map {
    background: #041F16;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    color: var(--color-text-light);
    position: relative;
    overflow: hidden;
}

.flow-map::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('../images/abstract_global_trade_3.png') center/cover;
    opacity: 0.15;
}

.flow-map .flow-steps {
    position: relative;
    z-index: 2;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: space-between;
}

.flow-step {
    flex: 1;
    min-width: 220px;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.flow-step h3 { color: var(--color-secondary); }

/* 9. AI Assistant */
.ai-assistant-floating {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1200;
}

.ai-assistant-floating button {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: none;
    background: var(--gradient-primary);
    color: var(--color-text-light);
    font-size: 1.5rem;
    box-shadow: var(--shadow-card);
    cursor: pointer;
}

.ai-panel {
    position: fixed;
    bottom: 110px;
    right: 30px;
    width: 320px;
    border-radius: var(--border-radius-md);
    background: #FFFFFF;
    box-shadow: var(--shadow-card);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.ai-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.ai-panel textarea {
    width: 100%;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(13, 79, 60, 0.2);
    padding: 0.5rem;
    resize: none;
    min-height: 100px;
}

/* 10. Page Hero */
.page-hero {
    background: var(--gradient-panel);
    color: var(--color-text-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url('../images/abstract_trade_6.jpg') center/cover;
    opacity: 0.08;
    mix-blend-mode: screen;
}

.page-hero > * {
    position: relative;
    z-index: 2;
}

/* 11. Tables & Lists */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-md);
}

thead {
    background: rgba(13, 79, 60, 0.08);
}

th, td {
    padding: 1rem;
    border-bottom: 1px solid rgba(13, 79, 60, 0.1);
    text-align: left;
}

/* 12. Cards for content pages */
.case-card, .news-card, .job-card, .document-card {
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(13, 79, 60, 0.08);
    padding: var(--spacing-md);
    background: #FFFFFF;
    box-shadow: var(--shadow-soft);
}

.case-card img,
.news-card img {
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-sm);
    height: 220px;
    object-fit: cover;
    width: 100%;
}

.news-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: rgba(20, 36, 35, 0.7);
    margin-bottom: 0.5rem;
}

.document-card ul {
    margin: 0;
    padding-left: 1.2rem;
}

/* 13. Contact */
.contact-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.contact-panel .card {
    height: 100%;
}

/* 14. Footer */
.footer {
    background: #03160F;
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-lg) 0;
}

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

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

/* 15. Animations */
@keyframes floatPulse {
    0% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
    100% { transform: translateY(0); }
}

.float { animation: floatPulse 4s ease-in-out infinite; }
/* 16. Timeline */
.timeline {
    display: grid;
    gap: var(--spacing-md);
    border-left: 2px solid rgba(13, 79, 60, 0.2);
    padding-left: var(--spacing-md);
}

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: -32px;
    top: 8px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gradient-secondary);
}

/* 17. Tabs */
.tab-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: var(--spacing-md);
}

.tab-nav button {
    border: 1px solid rgba(13, 79, 60, 0.2);
    background: #FFFFFF;
    padding: 0.65rem 1.5rem;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 600;
    color: var(--color-primary);
    transition: all 0.25s ease;
}

.tab-nav button.active {
    background: var(--gradient-primary);
    color: var(--color-text-light);
    border-color: transparent;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* 18. Process Steps */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.process-step {
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(13, 79, 60, 0.08);
}

.process-step strong {
    font-size: 2rem;
    color: var(--color-accent);
}

/* 19. Knowledge Grid */
.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.knowledge-card {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(13, 79, 60, 0.1);
    background: #FFFFFF;
}

/* 20. Partner Logos */
.partner-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-md);
    align-items: center;
}

.partner-logos img {
    filter: grayscale(1);
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.partner-logos img:hover {
    filter: grayscale(0);
    opacity: 1;
}

/* 21. Detail Banner */
.detail-banner {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    position: relative;
}

.detail-banner img {
    width: 100%;
    height: 320px;
    object-fit: cover;
}

.detail-banner .detail-meta {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.7));
    color: var(--color-text-light);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
}

/* 22. Media blocks */
.media-block {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    align-items: center;
}

.media-block img {
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-soft);
}

/* 23. Utility */
.pill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.pill-list span {
    padding: 0.4rem 1rem;
    border-radius: 999px;
    background: rgba(13, 79, 60, 0.1);
    color: var(--color-primary);
    font-size: 0.9rem;
}

blockquote {
    padding: var(--spacing-sm) var(--spacing-md);
    border-left: 4px solid var(--color-secondary);
    background: rgba(255, 215, 0, 0.08);
    margin-bottom: var(--spacing-md);
}
.ai-log {
    max-height: 240px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: var(--spacing-sm);
}

.ai-bubble {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    line-height: 1.5;
}

.ai-bubble.user {
    align-self: flex-end;
    background: rgba(33, 198, 167, 0.15);
    color: var(--color-forest);
}

.ai-bubble.assistant {
    background: rgba(13, 79, 60, 0.08);
    color: var(--color-primary);
}
input, select, textarea {
    font-family: var(--font-family-main);
    border: 1px solid rgba(13, 79, 60, 0.2);
    outline: none;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(33, 198, 167, 0.2);
}