:root {
    --brand: #f7b731;
    --brand-dark: #e09d1f;
    --brand-light: #ffd166;
    --brand-glow: rgba(247, 183, 49, 0.35);
    --text: #2d2a26;
    --text-light: #6b6560;
    --bg: #fdfaf5;
    --bg-alt: #f5efe6;
    --card: #ffffff;
    --card-glass: rgba(255, 255, 255, 0.72);
    --border: #e8dfd3;
    --border-glass: rgba(255, 255, 255, 0.5);
    --shadow: 0 4px 20px rgba(45, 42, 38, 0.08);
    --shadow-lg: 0 12px 40px rgba(45, 42, 38, 0.12);
    --shadow-glow: 0 8px 32px rgba(247, 183, 49, 0.28);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --header-h: 68px;
    --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    --gradient-brand: linear-gradient(135deg, #f7b731 0%, #e09d1f 50%, #d48f1a 100%);
    --gradient-hero: linear-gradient(135deg, rgba(247, 183, 49, 0.14) 0%, rgba(224, 157, 31, 0.06) 40%, rgba(253, 250, 245, 0) 100%);
    --gradient-banner: linear-gradient(120deg, #f7b731 0%, #f9c74f 35%, #e09d1f 100%);
    --gradient-card: linear-gradient(160deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.65) 100%);
    --glass-blur: blur(16px) saturate(160%);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color var(--transition), color var(--transition);
    background-image:
        radial-gradient(circle at 12% 8%, rgba(247, 183, 49, 0.07) 0%, transparent 42%),
        radial-gradient(circle at 88% 92%, rgba(224, 157, 31, 0.06) 0%, transparent 46%);
    background-attachment: fixed;
}

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

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

button {
    font-family: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ 顶部通告条 ============ */
.top-bar {
    background: var(--gradient-brand);
    color: #2d2a26;
    font-size: 13px;
    padding: 7px 0;
    text-align: center;
    letter-spacing: 0.4px;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.top-bar::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
    transform: translateX(-100%);
    animation: shimmer 4.5s ease-in-out infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    60%, 100% { transform: translateX(100%); }
}

/* ============ 站点头部 ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--card-glass);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border);
    transition: box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 4px 24px rgba(45, 42, 38, 0.1);
    border-bottom-color: transparent;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 0;
    gap: 20px;
    min-height: var(--header-h);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
    color: var(--text);
    flex-shrink: 0;
    letter-spacing: -0.3px;
}

.logo svg {
    width: 36px;
    height: 36px;
    transition: transform var(--transition);
}

.logo:hover svg {
    transform: rotate(-8deg) scale(1.06);
}

.logo span em {
    font-style: normal;
    color: var(--brand-dark);
}

.main-nav {
    display: flex;
    gap: 28px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
}

.main-nav a {
    position: relative;
    padding: 4px 0;
    transition: color var(--transition);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-brand);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--transition);
}

.main-nav a:hover {
    color: var(--brand-dark);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    transform: scaleX(1);
}

.main-nav a.active {
    color: var(--brand-dark);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-alt);
    border-radius: 24px;
    padding: 6px 14px;
    border: 1px solid var(--border);
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.search-box:focus-within {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px var(--brand-glow);
    background: var(--card);
}

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 14px;
    width: 130px;
    color: var(--text);
    transition: width var(--transition);
    font-family: inherit;
}

.search-box input:focus {
    width: 170px;
}

.search-box input::placeholder {
    color: #b0a89e;
}

.search-box button {
    border: none;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    color: var(--text-light);
    transition: color var(--transition), transform var(--transition);
    padding: 0;
}

.search-box button:hover {
    color: var(--brand-dark);
    transform: scale(1.12);
}

.dark-toggle {
    border: 1px solid var(--border);
    background: var(--card);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    color: var(--text);
    flex-shrink: 0;
}

.dark-toggle:hover {
    border-color: var(--brand);
    color: var(--brand-dark);
    transform: rotate(18deg) scale(1.06);
    box-shadow: 0 0 0 3px var(--brand-glow);
}

.mobile-menu-btn {
    display: none;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text);
    padding: 4px;
    transition: color var(--transition), transform var(--transition);
}

.mobile-menu-btn:hover {
    color: var(--brand-dark);
    transform: scale(1.08);
}

/* ============ 移动端导航 ============ */
.mobile-nav {
    display: none;
    flex-direction: column;
    gap: 0;
    background: var(--card-glass);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--border);
    padding: 8px 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.mobile-nav.open {
    display: flex;
    max-height: 420px;
}

.mobile-nav a {
    padding: 13px 24px;
    font-size: 15px;
    color: var(--text-light);
    border-bottom: 1px solid var(--border);
    transition: color var(--transition), background var(--transition), padding-left var(--transition);
}

.mobile-nav a:hover {
    color: var(--brand-dark);
    background: rgba(247, 183, 49, 0.07);
    padding-left: 30px;
}

.mobile-nav a:last-child {
    border-bottom: none;
}

/* ============ 面包屑 ============ */
.breadcrumb {
    padding: 16px 0 0;
    font-size: 13px;
    color: var(--text-light);
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.breadcrumb a {
    color: var(--text-light);
    transition: color var(--transition);
}

.breadcrumb a:hover {
    color: var(--brand-dark);
}

.breadcrumb span.sep {
    color: #c9c0b6;
}

/* ============ Hero 首屏 ============ */
.hero {
    padding: 36px 0 52px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    border-radius: var(--radius-lg);
    pointer-events: none;
    z-index: -1;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-content h1 {
    font-size: 40px;
    line-height: 1.24;
    font-weight: 800;
    letter-spacing: -0.6px;
    margin-bottom: 18px;
}

.hero-content h1 em {
    font-style: normal;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero-content .lead {
    font-size: 17px;
    color: var(--text-light);
    margin-bottom: 28px;
    max-width: 520px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn svg {
    transition: transform var(--transition);
}

.btn-primary {
    background: var(--gradient-brand);
    color: #2d2a26;
    box-shadow: 0 4px 18px var(--brand-glow);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 20%, rgba(255, 255, 255, 0.5) 50%, transparent 80%);
    transform: translateX(-120%);
    transition: transform 0.6s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px var(--brand-glow);
}

.btn-primary:hover::before {
    transform: translateX(120%);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--text);
}

.btn-outline:hover {
    border-color: var(--brand);
    color: var(--brand-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(247, 183, 49, 0.18);
    background: rgba(247, 183, 49, 0.05);
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 36px;
}

.stat-item {
    position: relative;
}

.stat-item .num {
    font-size: 28px;
    font-weight: 800;
    color: var(--brand-dark);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
}

.stat-item .label {
    font-size: 13px;
    color: var(--text-light);
}

.hero-visual {
    position: relative;
}

.hero-visual::after {
    content: '';
    position: absolute;
    inset: -18px;
    background: radial-gradient(circle at 60% 40%, var(--brand-glow) 0%, transparent 68%);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.75;
    animation: pulseGlow 6s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.55; transform: scale(1); }
    50% { opacity: 0.85; transform: scale(1.04); }
}

.hero-visual svg {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-slow);
}

.hero-visual:hover svg {
    transform: translateY(-6px) scale(1.01);
}

/* ============ Banner 轮播 ============ */
.banner-carousel {
    margin: 8px 0 52px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    background: var(--gradient-banner);
    box-shadow: var(--shadow-lg);
}

.banner-carousel::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.18) 0%, transparent 55%);
    pointer-events: none;
    z-index: 1;
}

.carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.carousel-slide {
    min-width: 100%;
    padding: 42px 48px;
    display: flex;
    align-items: center;
    gap: 32px;
    color: #2d2a26;
    position: relative;
    z-index: 2;
}

.carousel-slide svg {
    width: 120px;
    height: 120px;
    flex-shrink: 0;
    filter: drop-shadow(0 6px 16px rgba(45, 42, 38, 0.16));
    transition: transform var(--transition-slow);
}

.carousel-slide:hover svg {
    transform: scale(1.06) rotate(-3deg);
}

.carousel-text h3 {
    font-size: 23px;
    margin-bottom: 8px;
    font-weight: 800;
    letter-spacing: -0.3px;
}

.carousel-text p {
    color: rgba(45, 42, 38, 0.78);
    font-size: 15px;
    max-width: 560px;
}

.carousel-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 3;
}

.carousel-dots button {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: none;
    background: rgba(45, 42, 38, 0.25);
    cursor: pointer;
    transition: all var(--transition);
    padding: 0;
}

.carousel-dots button:hover {
    background: rgba(45, 42, 38, 0.45);
}

.carousel-dots button.active {
    background: #2d2a26;
    width: 26px;
    border-radius: 4px;
}

/* ============ 通用区块 ============ */
.section {
    padding: 60px 0;
    position: relative;
}

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

.section-alt::before,
.section-alt::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.section-alt::before { top: 0; }
.section-alt::after { bottom: 0; }

.section-header {
    margin-bottom: 42px;
    max-width: 760px;
}

.section-header .kicker {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2.5px;
    color: var(--brand-dark);
    text-transform: uppercase;
    margin-bottom: 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.section-header .kicker::before {
    content: '';
    width: 22px;
    height: 2px;
    background: var(--gradient-brand);
    border-radius: 2px;
}

.section-header h2 {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.4px;
    margin-bottom: 14px;
    line-height: 1.3;
}

.section-header p {
    color: var(--text-light);
    font-size: 16px;
}

/* ============ 卡片网格 ============ */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    background: var(--gradient-card);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
    box-shadow: 0 2px 10px rgba(45, 42, 38, 0.04);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-brand);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--transition);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(247, 183, 49, 0.55);
}

.card:hover::before {
    transform: scaleX(1);
}

.card .icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(247, 183, 49, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    color: var(--brand-dark);
    transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}

.card:hover .icon {
    transform: scale(1.1) rotate(-5deg);
    background: rgba(247, 183, 49, 0.24);
    box-shadow: 0 6px 18px var(--brand-glow);
}

.card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    letter-spacing: -0.2px;
}

.card p {
    font-size: 14.5px;
    color: var(--text-light);
}

.card ul li a {
    transition: color var(--transition), padding-left var(--transition);
    display: inline-block;
}

.card ul li a:hover {
    color: var(--brand-dark) !important;
    padding-left: 5px;
}

/* ============ 文章列表 ============ */
.article-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.article-item {
    background: var(--gradient-card);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    padding: 26px;
    border: 1px solid var(--border);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.article-item::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-brand);
    transform: scaleY(0);
    transform-origin: top center;
    transition: transform var(--transition);
}

.article-item:hover {
    border-color: rgba(247, 183, 49, 0.55);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.article-item:hover::after {
    transform: scaleY(1);
}

.article-item .meta {
    font-size: 12.5px;
    color: var(--text-light);
    margin-bottom: 10px;
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.article-item .meta span:last-child {
    color: var(--brand-dark);
    font-weight: 600;
}

.article-item h3 {
    font-size: 17px;
    margin-bottom: 10px;
    line-height: 1.5;
    transition: color var(--transition);
}

.article-item:hover h3 {
    color: var(--brand-dark);
}

.article-item .excerpt {
    font-size: 14px;
    color: var(--text-light);
    flex: 1;
    margin-bottom: 16px;
}

.article-item .read-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--brand-dark);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition), color var(--transition);
    align-self: flex-start;
}

.article-item .read-more:hover {
    gap: 9px;
    color: var(--brand);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--brand) 0%, var(--brand-dark) 60%, transparent 100%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-bottom: 32px;
    transition: transform var(--transition);
}

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: -30px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--brand);
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--brand);
    transition: transform var(--transition), box-shadow var(--transition);
}

.timeline-item:hover::before {
    transform: scale(1.3);
    box-shadow: 0 0 0 2px var(--brand), 0 0 0 8px var(--brand-glow);
}

.timeline-item:hover {
    transform: translateX(4px);
}

.timeline-item .year {
    font-size: 14px;
    font-weight: 700;
    color: var(--brand-dark);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.timeline-item h4 {
    font-size: 16px;
    margin-bottom: 6px;
}

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

/* ============ FAQ ============ */
.faq-list {
    max-width: 860px;
}

.faq-item {
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.faq-item:hover {
    background: rgba(247, 183, 49, 0.04);
}

.faq-question {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    padding: 20px 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    color: var(--text);
    font-family: inherit;
    transition: color var(--transition);
    line-height: 1.6;
}

.faq-question:hover {
    color: var(--brand-dark);
}

.faq-question .chevron {
    flex-shrink: 0;
    transition: transform var(--transition), color var(--transition);
    color: var(--text-light);
}

.faq-item.open .faq-question {
    color: var(--brand-dark);
}

.faq-item.open .faq-question .chevron {
    transform: rotate(180deg);
    color: var(--brand-dark);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition), opacity var(--transition);
    opacity: 0;
    padding: 0 8px;
}

.faq-item.open .faq-answer {
    max-height: 600px;
    padding-bottom: 22px;
    opacity: 1;
}

.faq-answer p {
    font-size: 14.5px;
    color: var(--text-light);
    line-height: 1.9;
}

/* ============ HowTo 步骤 ============ */
.howto-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    counter-reset: step;
}

.howto-step {
    background: var(--gradient-card);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    padding: 26px 24px;
    border: 1px solid var(--border);
    position: relative;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    overflow: hidden;
}

.howto-step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(247, 183, 49, 0.5);
}

.howto-step::before {
    counter-increment: step;
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: #2d2a26;
    font-weight: 800;
    font-size: 16px;
    margin-bottom: 16px;
    box-shadow: 0 4px 14px var(--brand-glow);
    transition: transform var(--transition);
}

.howto-step:hover::before {
    transform: scale(1.1) rotate(-6deg);
}

.howto-step h4 {
    font-size: 16px;
    margin-bottom: 8px;
}

.howto-step p {
    font-size: 14px;
    color: var(--text-light);
}

/* ============ 团队 ============ */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-member {
    text-align: center;
    background: var(--gradient-card);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    padding: 30px 20px;
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.team-member:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(247, 183, 49, 0.5);
}

.team-member svg {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    border-radius: 50%;
    transition: transform var(--transition-slow), box-shadow var(--transition);
}

.team-member:hover svg {
    transform: scale(1.08) rotate(4deg);
    box-shadow: 0 8px 24px var(--brand-glow);
}

.team-member h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.team-member .role {
    font-size: 13px;
    color: var(--brand-dark);
    font-weight: 600;
    margin-bottom: 8px;
}

.team-member p {
    font-size: 13px;
    color: var(--text-light);
}

/* ============ 联系 ============ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: transform var(--transition);
}

.contact-info-item:hover {
    transform: translateX(5px);
}

.contact-info-item .icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(247, 183, 49, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--brand-dark);
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.contact-info-item:hover .icon {
    background: rgba(247, 183, 49, 0.26);
    transform: scale(1.08);
    box-shadow: 0 6px 18px var(--brand-glow);
}

.contact-info-item h4 {
    font-size: 15px;
    margin-bottom: 3px;
}

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

.contact-form {
    background: var(--gradient-card);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    padding: 34px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition), border-color var(--transition);
}

.contact-form:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(247, 183, 49, 0.4);
}

.contact-form h3 {
    font-size: 20px;
    margin-bottom: 22px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13.5px;
    font-weight: 600;
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px var(--brand-glow);
    background: var(--card);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #b0a89e;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ============ 页脚 ============ */
.site-footer {
    background: #2d2a26;
    color: #d8d2ca;
    padding: 60px 0 0;
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-brand);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 44px;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: #a9a29a;
    margin-bottom: 20px;
    max-width: 320px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    color: #d8d2ca;
}

.footer-social a:hover {
    background: var(--gradient-brand);
    color: #2d2a26;
    transform: translateY(-3px) scale(1.06);
    box-shadow: 0 6px 18px var(--brand-glow);
}

.footer-col h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--gradient-brand);
    border-radius: 2px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul li a,
.footer-col ul li {
    font-size: 14px;
    color: #a9a29a;
    transition: color var(--transition), padding-left var(--transition);
    display: inline-block;
}

.footer-col ul li a:hover {
    color: var(--brand);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: #a9a29a;
}

.footer-bottom a {
    color: #a9a29a;
    transition: color var(--transition);
}

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

/* ============ 返回顶部 ============ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: #2d2a26;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px var(--brand-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px) scale(0.9);
    transition: all var(--transition);
    z-index: 900;
}

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

.back-to-top:hover {
    transform: translateY(-4px) scale(1.08);
    box-shadow: 0 10px 28px var(--brand-glow);
}

.back-to-top:active {
    transform: translateY(-1px) scale(1.02);
}

/* ============ 暗黑模式 ============ */
body.dark {
    --brand: #f7b731;
    --brand-dark: #f9c74f;
    --brand-light: #ffd166;
    --brand-glow: rgba(247, 183, 49, 0.28);
    --text: #f0ebe4;
    --text-light: #b0a89e;
    --bg: #1a1816;
    --bg-alt: #24211e;
    --card: #2a2724;
    --card-glass: rgba(42, 39, 36, 0.78);
    --border: #3a3632;
    --border-glass: rgba(255, 255, 255, 0.08);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.34);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.46);
    --shadow-glow: 0 8px 32px rgba(247, 183, 49, 0.22);
    --gradient-hero: linear-gradient(135deg, rgba(247, 183, 49, 0.1) 0%, rgba(224, 157, 31, 0.04) 40%, rgba(26, 24, 22, 0) 100%);
    --gradient-card: linear-gradient(160deg, rgba(42, 39, 36, 0.92) 0%, rgba(42, 39, 36, 0.7) 100%);
}

body.dark .site-header {
    background: var(--card-glass);
}

body.dark .top-bar {
    color: #2d2a26;
}

body.dark .timeline-item::before {
    border-color: var(--bg);
}

body.dark .carousel-slide {
    color: #2d2a26;
}

body.dark .carousel-text p {
    color: rgba(45, 42, 38, 0.78);
}

body.dark .search-box input::placeholder,
body.dark .form-group input::placeholder,
body.dark .form-group textarea::placeholder {
    color: #7a736b;
}

body.dark .card ul li a,
body.dark .card ul li a[style] {
    color: var(--text-light) !important;
}

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

body.dark .site-footer {
    background: #141210;
}

body.dark .card,
body.dark .article-item,
body.dark .howto-step,
body.dark .team-member,
body.dark .contact-form {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.24);
}

/* ============ 滚动动画 ============ */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.card.reveal:nth-child(2),
.article-item.reveal:nth-child(2),
.team-member.reveal:nth-child(2) {
    transition-delay: 0.08s;
}

.card.reveal:nth-child(3),
.article-item.reveal:nth-child(3),
.team-member.reveal:nth-child(3) {
    transition-delay: 0.16s;
}

.card.reveal:nth-child(4),
.article-item.reveal:nth-child(4),
.team-member.reveal:nth-child(4) {
    transition-delay: 0.24s;
}

.card.reveal:nth-child(5),
.article-item.reveal:nth-child(5) {
    transition-delay: 0.32s;
}

.card.reveal:nth-child(6),
.article-item.reveal:nth-child(6) {
    transition-delay: 0.4s;
}

/* ============ 无障碍 ============ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ============ 选中文字 ============ */
::selection {
    background: var(--brand);
    color: #2d2a26;
}

/* ============ 滚动条 ============ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-alt);
}

::-webkit-scrollbar-thumb {
    background: var(--brand);
    border-radius: 6px;
    border: 2px solid var(--bg-alt);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--brand-dark);
}

/* ============ 响应式：平板 ============ */
@media (max-width: 960px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .hero-content h1 {
        font-size: 34px;
    }

    .hero-visual {
        max-width: 560px;
        margin: 0 auto;
    }

    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .main-nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .search-box {
        display: none;
    }

    .section {
        padding: 52px 0;
    }

    .section-header h2 {
        font-size: 26px;
    }

    .carousel-slide {
        padding: 36px 36px;
    }

    .carousel-slide svg {
        width: 100px;
        height: 100px;
    }
}

/* ============ 响应式：手机 ============ */
@media (max-width: 640px) {
    .container {
        padding: 0 18px;
    }

    .top-bar {
        font-size: 11.5px;
        padding: 6px 12px;
        line-height: 1.6;
    }

    .hero {
        padding: 24px 0 40px;
    }

    .hero-content h1 {
        font-size: 28px;
        letter-spacing: -0.4px;
    }

    .hero-content .lead {
        font-size: 15.5px;
    }

    .hero-actions {
        gap: 10px;
    }

    .btn {
        padding: 11px 22px;
        font-size: 14px;
        flex: 1;
        justify-content: center;
    }

    .hero-stats {
        gap: 20px;
        margin-top: 28px;
    }

    .stat-item .num {
        font-size: 23px;
    }

    .stat-item .label {
        font-size: 12px;
    }

    .banner-carousel {
        margin: 8px 0 40px;
        border-radius: var(--radius);
    }

    .carousel-slide {
        flex-direction: column;
        text-align: center;
        padding: 32px 22px 44px;
        gap: 20px;
    }

    .carousel-slide svg {
        width: 84px;
        height: 84px;
    }

    .carousel-text h3 {
        font-size: 19px;
    }

    .carousel-text p {
        font-size: 14px;
    }

    .section {
        padding: 44px 0;
    }

    .section-header {
        margin-bottom: 32px;
    }

    .section-header h2 {
        font-size: 22px;
    }

    .section-header p {
        font-size: 15px;
    }

    .card-grid,
    .article-list,
    .team-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .card,
    .article-item,
    .howto-step,
    .team-member {
        padding: 22px;
    }

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

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .footer-bottom > div:last-child {
        justify-content: center;
    }

    .timeline {
        padding-left: 26px;
    }

    .timeline-item::before {
        left: -24px;
        width: 10px;
        height: 10px;
    }

    .faq-question {
        font-size: 15px;
        padding: 18px 4px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }

    .contact-form {
        padding: 24px;
    }

    .header-inner {
        padding: 10px 0;
        min-height: 60px;
    }

    .logo {
        font-size: 18px;
    }

    .logo svg {
        width: 32px;
        height: 32px;
    }

    .card ul {
        gap: 6px;
    }

    .card ul li a {
        font-size: 14px;
    }
}

/* ============ 超小屏 ============ */
@media (max-width: 380px) {
    .hero-content h1 {
        font-size: 24px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 16px;
    }

    .btn {
        font-size: 13px;
        padding: 10px 18px;
    }
}

/* ============ 减少动画偏好 ============ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ============ 打印样式 ============ */
@media print {
    .site-header,
    .top-bar,
    .back-to-top,
    .mobile-nav,
    .banner-carousel,
    .hero-actions,
    .contact-form,
    .footer-social {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .card,
    .article-item {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}