/* ================================================================
   亚太国际人民事业发展共同体 - 全站样式表
   设计系统 v3.0：政府正式感 + 现代科技风
   主色 #0a2540  科技蓝 #2563eb  点青 #06b6d4  琥珀 #f59e0b
   日期：2026-06
================================================================ */

/* ----------------------------------------------------------------
   1. 设计令牌（CSS Variables）
---------------------------------------------------------------- */
:root {
    /* 主色：深海军蓝（权威、稳重、国际化） */
    --clr-primary:        #0a2540;
    --clr-primary-light:  #1e3a8a;
    --clr-primary-dark:   #061629;
    --clr-primary-alpha:  rgba(10, 37, 64, 0.08);

    /* 科技蓝（CTA、链接） */
    --clr-tech:           #2563eb;
    --clr-tech-light:     #3b82f6;
    --clr-tech-dark:      #1d4ed8;

    /* 点睛青（数字、数据、图表） */
    --clr-cyan:           #06b6d4;
    --clr-cyan-light:     #67e8f9;

    /* 琥珀强调（高亮 CTA、徽章） */
    --clr-amber:          #f59e0b;
    --clr-amber-dark:     #d97706;
    --clr-amber-light:    #fcd34d;

    /* 语义色 */
    --clr-success:        #16a34a;
    --clr-danger:         #dc2626;
    --clr-warning:        #f59e0b;
    --clr-info:           #06b6d4;

    /* 中性色 */
    --clr-dark:           #0f172a;
    --clr-text:           #1c2536;
    --clr-text-muted:     #64748b;
    --clr-text-soft:      #94a3b8;
    --clr-border:         #e2e8f0;
    --clr-border-soft:    #f1f5f9;
    --clr-bg-light:       #f7f9fc;
    --clr-bg-cool:        #eef2f7;
    --clr-white:          #ffffff;

    /* 渐变 */
    --grad-primary:       linear-gradient(135deg, #0a2540 0%, #1e3a8a 100%);
    --grad-tech:          linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
    --grad-amber:         linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --grad-hero:          linear-gradient(135deg, #061629 0%, #0a2540 35%, #1e3a8a 75%, #06b6d4 130%);

    /* 字体 */
    --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;

    /* 尺寸 */
    --navbar-h:    72px;
    --radius-xs:   4px;
    --radius-sm:   6px;
    --radius-md:   10px;
    --radius-lg:   16px;
    --radius-xl:   24px;
    --radius-full: 9999px;

    /* 阴影 */
    --shadow-xs:  0 1px 3px rgba(10,37,64,.06), 0 1px 2px rgba(10,37,64,.04);
    --shadow-sm:  0 4px 6px -1px rgba(10,37,64,.07), 0 2px 4px -1px rgba(10,37,64,.04);
    --shadow-md:  0 10px 25px -5px rgba(10,37,64,.08), 0 4px 6px -2px rgba(10,37,64,.04);
    --shadow-lg:  0 20px 35px -5px rgba(10,37,64,.10), 0 10px 15px -5px rgba(10,37,64,.04);
    --shadow-glow: 0 0 0 3px rgba(37,99,235,.15);

    /* 过渡 */
    --tr-fast:    150ms ease;
    --tr-base:    250ms ease;
    --tr-slow:    400ms ease;

    /* 区块间距 */
    --section-py: 5rem;

    /* 最大宽度 */
    --container-max: 1320px;
}

/* ----------------------------------------------------------------
   2. 全局基础
---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-base);
    color: var(--clr-text);
    line-height: 1.7;
    background: var(--clr-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a { color: var(--clr-tech); text-decoration: none; transition: color var(--tr-fast); }
a:hover { color: var(--clr-tech-dark); }

::focus-visible {
    outline: 2px solid var(--clr-tech);
    outline-offset: 3px;
    border-radius: var(--radius-xs);
}

/* 容器最大宽度限制（超宽屏） */
.container, .container-fluid { max-width: var(--container-max); }
.container-fluid.pe-0 { max-width: 100%; }  /* 部分区段允许 100% */

/* 通用区块上下内边距 */
.py-section { padding-top: var(--section-py); padding-bottom: var(--section-py); }

/* ----------------------------------------------------------------
   3. 通用 Section 标题组
---------------------------------------------------------------- */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--clr-tech);
    margin-bottom: 0.6rem;
}
.section-label::before {
    content: '';
    width: 24px; height: 2px;
    background: var(--clr-tech);
    border-radius: 2px;
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--clr-primary);
    margin-bottom: 0.6rem;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.section-sub {
    font-size: 1rem;
    color: var(--clr-text-muted);
    margin-bottom: 0;
}

/* ----------------------------------------------------------------
   4. 导航栏
---------------------------------------------------------------- */
#mainNavbar {
    height: var(--navbar-h);
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    border-bottom: 1px solid transparent;
    transition: border-color var(--tr-base), box-shadow var(--tr-base), background var(--tr-base);
    z-index: 1050;
}

#mainNavbar.scrolled {
    background: rgba(255,255,255,0.98);
    border-bottom-color: var(--clr-border);
    box-shadow: 0 2px 20px rgba(10,37,64,.06);
}

/* 品牌 */
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 800;
    color: var(--clr-primary) !important;
    font-size: 1.05rem;
    letter-spacing: 0.01em;
    transition: opacity var(--tr-fast);
}
.navbar-brand:hover { opacity: 0.85; }

.brand-icon {
    width: 38px;
    height: 38px;
    background: var(--grad-tech);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(37,99,235,.25);
}

/* 导航链接 */
.navbar-nav .nav-link {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--clr-text) !important;
    padding: 0.45rem 0.75rem !important;
    border-radius: var(--radius-sm);
    transition: color var(--tr-fast), background var(--tr-fast);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--clr-tech) !important;
    background: rgba(37,99,235,.08);
}
.navbar-nav .nav-link i { font-size: 0.8rem; margin-right: 0.35rem; color: var(--clr-text-soft); transition: color var(--tr-fast); }
.navbar-nav .nav-link:hover i,
.navbar-nav .nav-link.active i { color: var(--clr-tech); }

/* 下拉菜单 */
.dropdown-menu {
    border: 1px solid var(--clr-border);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    min-width: 220px;
    animation: dropIn 0.2s ease;
    border-top: 3px solid var(--clr-tech);
}

@keyframes dropIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.dropdown-item {
    font-size: 0.875rem;
    color: var(--clr-text);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: background var(--tr-fast), color var(--tr-fast), padding-left var(--tr-fast);
    display: flex;
    align-items: center;
}
.dropdown-item i { color: var(--clr-text-soft); transition: color var(--tr-fast); }
.dropdown-item:hover {
    background: rgba(37,99,235,.08);
    color: var(--clr-tech);
    padding-left: 1rem;
}
.dropdown-item:hover i { color: var(--clr-tech); }
.dropdown-item.active, .dropdown-item:active {
    background: var(--clr-tech);
    color: #fff;
}
.dropdown-item.active i, .dropdown-item:active i { color: #fff; }
.dropdown-divider { border-color: var(--clr-border-soft); margin: 0.35rem 0; }

/* 加入我们按钮 - 琥珀高亮 */
.btn-join {
    background: var(--grad-amber);
    color: #fff !important;
    font-size: 0.875rem;
    font-weight: 700;
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-full);
    border: none;
    transition: transform var(--tr-fast), box-shadow var(--tr-fast);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    box-shadow: 0 4px 12px rgba(245,158,11,.25);
}
.btn-join:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245,158,11,.35);
    color: #fff !important;
}

/* ----------------------------------------------------------------
   5. 移动端 Offcanvas 菜单
---------------------------------------------------------------- */
.offcanvas { max-width: 320px; }
.offcanvas-header { padding: 1rem 1.25rem; }

.mobile-nav-accordion .accordion-button {
    font-size: 0.95rem;
    font-weight: 500;
    background: none;
    color: var(--clr-text);
    padding: 0.85rem 1.25rem;
    box-shadow: none;
}
.mobile-nav-accordion .accordion-button:not(.collapsed) {
    color: var(--clr-tech);
    background: rgba(37,99,235,.06);
    box-shadow: none;
}
.mobile-nav-accordion .accordion-button::after { color: var(--clr-text-muted); }

.accordion-nav-link {
    display: flex;
    align-items: center;
    padding: 0.85rem 1.25rem;
    font-size: 0.95rem;
    color: var(--clr-text);
    border-bottom: 1px solid var(--clr-border-soft);
    transition: background var(--tr-fast), color var(--tr-fast);
}
.accordion-nav-link:hover {
    background: rgba(37,99,235,.06);
    color: var(--clr-tech);
}

.mobile-sub-link {
    display: block;
    padding: 0.5rem 1.25rem 0.5rem 2.5rem;
    font-size: 0.875rem;
    color: var(--clr-text-muted);
    border-bottom: 1px solid var(--clr-border-soft);
    transition: color var(--tr-fast), background var(--tr-fast);
}
.mobile-sub-link:hover {
    color: var(--clr-tech);
    background: rgba(37,99,235,.04);
}

/* ----------------------------------------------------------------
   6. Hero 区域
---------------------------------------------------------------- */
.hero-section {
    position: relative;
    min-height: 100vh;
    min-height: 680px;
    overflow: hidden;
    padding-top: var(--navbar-h);
    background: var(--grad-hero);
    display: flex;
    align-items: center;
}

/* 视频背景层 */
.hero-video-wrap {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}
.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    opacity: 0.55;
}
.hero-fallback {
    position: absolute;
    inset: 0;
    z-index: 0;
}

/* SVG 科技网格点阵 */
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(103,232,249,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(103,232,249,0.06) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    z-index: 1;
    animation: gridDrift 20s linear infinite;
}
@keyframes gridDrift {
    from { background-position: 0 0, 0 0; }
    to   { background-position: 48px 48px, 48px 48px; }
}

/* 粒子装饰 */
.hero-particles span {
    position: absolute;
    border-radius: 50%;
    background: rgba(103,232,249,.18);
    animation: floatBubble 8s ease-in-out infinite;
    filter: blur(2px);
}
.hero-particles span:nth-child(1)  { width:300px; height:300px; top:-10%; left:-5%;   animation-delay:0s;   }
.hero-particles span:nth-child(2)  { width:200px; height:200px; top:60%;  left:5%;    animation-delay:2s;   }
.hero-particles span:nth-child(3)  { width:400px; height:400px; top:-20%; left:40%;   animation-delay:1s;   background:rgba(37,99,235,.12); }
.hero-particles span:nth-child(4)  { width:250px; height:250px; top:30%;  left:70%;   animation-delay:3s;   }
.hero-particles span:nth-child(5)  { width:150px; height:150px; top:70%;  left:80%;   animation-delay:0.5s; }
.hero-particles span:nth-child(6)  { width:180px; height:180px; top:10%;  left:85%;   animation-delay:4s;   background:rgba(103,232,249,.10); }
.hero-particles span:nth-child(7)  { width:100px; height:100px; top:80%;  left:40%;   animation-delay:1.5s; }
.hero-particles span:nth-child(8)  { width:350px; height:350px; top:50%;  left:-10%;  animation-delay:2.5s; background:rgba(255,255,255,.04); }

@keyframes floatBubble {
    0%, 100% { transform: translateY(0)   scale(1); }
    50%       { transform: translateY(-20px) scale(1.05); }
}

/* 装饰光弧 */
.hero-arc {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(103,232,249,.15);
    z-index: 1;
    pointer-events: none;
}
.hero-arc-1 { width: 600px; height: 600px; top: -200px; right: -200px; animation: arcSpin 30s linear infinite; }
.hero-arc-2 { width: 400px; height: 400px; bottom: -100px; left: -100px; animation: arcSpin 20s linear infinite reverse; }
@keyframes arcSpin {
    to { transform: rotate(360deg); }
}

/* 遮罩层 */
.hero-overlay {
    position: relative;
    z-index: 2;
    width: 100%;
    background: linear-gradient(to bottom, rgba(6,22,41,.55) 0%, rgba(6,22,41,.35) 60%, rgba(6,22,41,.75) 100%);
    padding: 4rem 0 5rem;
}

/* 角标徽章 */
.hero-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(103,232,249,.10);
    border: 1px solid rgba(103,232,249,.35);
    color: var(--clr-cyan-light);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    letter-spacing: 0.05em;
    backdrop-filter: blur(8px);
}
.hero-badge i { margin-right: .4rem; }

/* 主标题 */
.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 900;
    color: #fff;
    line-height: 1.15;
    text-shadow: 0 2px 20px rgba(0,0,0,.45);
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}
.hero-title .accent {
    background: linear-gradient(90deg, #67e8f9 0%, #2563eb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.35rem);
    color: rgba(255,255,255,.9);
    font-weight: 400;
    text-shadow: 0 1px 6px rgba(0,0,0,.3);
    margin-bottom: 0.4rem;
}

.hero-desc {
    font-size: 0.95rem;
    color: rgba(255,255,255,.7);
    letter-spacing: 0.03em;
}

/* CTA 按钮组 */
.hero-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.btn-hero-primary {
    background: var(--grad-tech);
    color: #fff;
    font-weight: 700;
    padding: 0.85rem 1.85rem;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    border: none;
    transition: transform var(--tr-fast), box-shadow var(--tr-fast);
    display: inline-flex;
    align-items: center;
    box-shadow: 0 8px 24px rgba(37,99,235,.35);
}
.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(37,99,235,.5);
    color: #fff;
}

.btn-hero-outline {
    background: rgba(255,255,255,.08);
    color: #fff;
    font-weight: 600;
    padding: 0.85rem 1.85rem;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    border: 1.5px solid rgba(255,255,255,.5);
    backdrop-filter: blur(8px);
    transition: background var(--tr-fast), border-color var(--tr-fast), transform var(--tr-fast);
    display: inline-flex;
    align-items: center;
}
.btn-hero-outline:hover {
    background: rgba(255,255,255,.18);
    border-color: #fff;
    color: #fff;
    transform: translateY(-3px);
}

.btn-hero-amber {
    background: var(--grad-amber);
    color: #fff;
    font-weight: 700;
    padding: 0.85rem 1.85rem;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    border: none;
    transition: transform var(--tr-fast), box-shadow var(--tr-fast);
    display: inline-flex;
    align-items: center;
    box-shadow: 0 8px 24px rgba(245,158,11,.4);
}
.btn-hero-amber:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(245,158,11,.55);
    color: #fff;
}

/* Hero 底部统计行 */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
    padding: 1.5rem 2rem;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    width: fit-content;
    margin: 0 auto;
}

.hero-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 1.75rem;
    min-width: 100px;
}
.hero-stat-item strong {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--clr-cyan-light);
    line-height: 1;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}
.hero-stat-item span {
    font-size: 0.78rem;
    color: rgba(255,255,255,.7);
    margin-top: 0.35rem;
    letter-spacing: 0.05em;
}

.hero-stat-divider {
    width: 1px;
    height: 36px;
    background: rgba(255,255,255,.2);
    flex-shrink: 0;
}

/* 滚动提示 */
.scroll-indicator {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    text-align: center;
    color: rgba(255,255,255,.65);
    font-size: 0.72rem;
    animation: scrollBounce 2s ease-in-out infinite;
}
.mouse {
    width: 26px;
    height: 42px;
    border: 2px solid rgba(255,255,255,.55);
    border-radius: 13px;
    margin: 0 auto 6px;
    position: relative;
}
.wheel {
    width: 5px;
    height: 8px;
    background: rgba(255,255,255,.85);
    border-radius: 3px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: wheelScroll 1.5s ease-in-out infinite;
}

@keyframes wheelScroll {
    0%   { opacity:1; transform: translateX(-50%) translateY(0); }
    100% { opacity:0; transform: translateX(-50%) translateY(16px); }
}
@keyframes scrollBounce {
    0%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40%           { transform: translateX(-50%) translateY(-8px); }
}

/* ----------------------------------------------------------------
   7. 实时动态滚动条
---------------------------------------------------------------- */
.ticker-bar {
    background: var(--clr-primary);
    color: #fff;
    height: 44px;
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.ticker-bar .d-flex { height: 44px; }

.ticker-label {
    background: var(--clr-tech);
    height: 100%;
    padding: 0 1.25rem;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    white-space: nowrap;
    position: relative;
}
.ticker-label::after {
    content: '';
    position: absolute;
    right: -10px; top: 0;
    width: 0; height: 0;
    border-left: 10px solid var(--clr-tech);
    border-top: 22px solid transparent;
    border-bottom: 22px solid transparent;
}

.ticker-wrapper { position: relative; }

.ticker-content {
    display: inline-block;
    white-space: nowrap;
    animation: ticker 35s linear infinite;
    padding-left: 100%;
    will-change: transform;
}
.ticker-content:hover { animation-play-state: paused; }

.ticker-item {
    display: inline-block;
    padding: 0 1.5rem;
    font-size: 0.88rem;
}

.ticker-sep {
    color: rgba(255,255,255,.35);
    margin: 0 0.5rem;
}

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

/* ----------------------------------------------------------------
   8. 价值主张三栏
---------------------------------------------------------------- */
.section-value-prop { background: var(--clr-white); position: relative; }

.vp-card {
    background: var(--clr-white);
    border-radius: var(--radius-lg);
    padding: 2.25rem 1.85rem 1.85rem;
    border: 1px solid var(--clr-border);
    box-shadow: var(--shadow-xs);
    position: relative;
    overflow: hidden;
    transition: transform var(--tr-base), box-shadow var(--tr-base), border-color var(--tr-base);
    display: flex;
    flex-direction: column;
    height: 100%;
}
.vp-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
}
.vp-problem::before  { background: linear-gradient(90deg, var(--clr-danger), #ef4444); }
.vp-answer::before   { background: var(--grad-tech); }
.vp-difference::before { background: var(--grad-amber); }

.vp-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.vp-featured {
    background: linear-gradient(160deg, rgba(37,99,235,.04) 0%, #fff 100%);
    border-color: rgba(37,99,235,.2);
}

.vp-icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    flex-shrink: 0;
}
.vp-problem  .vp-icon-wrap { background: rgba(220,38,38,.1);   color: var(--clr-danger); }
.vp-answer   .vp-icon-wrap { background: rgba(37,99,235,.1);   color: var(--clr-tech); }
.vp-difference .vp-icon-wrap { background: rgba(245,158,11,.12); color: var(--clr-amber-dark); }

.vp-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin-bottom: 1rem;
}

.vp-list {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
}
.vp-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--clr-border-soft);
    font-size: 0.925rem;
    line-height: 1.6;
}
.vp-list li:last-child { border-bottom: none; }

.vp-bullet {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 0.5rem;
}
.vp-bullet.danger  { background: var(--clr-danger); }
.vp-bullet.success { background: var(--clr-success); }
.vp-bullet.primary { background: var(--clr-tech); }

.vp-list em { color: var(--clr-text-soft); font-style: normal; font-size: 0.8rem; padding: 0 .25rem; }

.vp-cta-btn {
    display: inline-flex;
    align-items: center;
    background: var(--clr-tech);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.65rem 1.35rem;
    border-radius: var(--radius-full);
    transition: background var(--tr-fast), transform var(--tr-fast), box-shadow var(--tr-fast);
    align-self: flex-start;
    margin-top: 0.25rem;
}
.vp-cta-btn:hover {
    background: var(--clr-tech-dark);
    color: #fff;
    transform: translateX(3px);
    box-shadow: 0 4px 14px rgba(37,99,235,.3);
}

/* ----------------------------------------------------------------
   9. 全球足迹（真实地图 - d3-geo 渲染）
---------------------------------------------------------------- */
.section-global-footprint { background: var(--clr-bg-light); position: relative; }

.world-map-container {
    background: var(--clr-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--clr-border);
}

.world-map-stage {
    position: relative;
    width: 100%;
    aspect-ratio: 2 / 1;
    background:
        radial-gradient(ellipse at center, #e0eaf5 0%, #c5d6e8 50%, #b1c6dc 100%);
    overflow: hidden;
}
@media (max-width: 575.98px) {
    .world-map-stage { aspect-ratio: 2 / 1; }
    .map-legend { display: flex; font-size: 0.62rem; padding: 0.4rem 0.55rem; right: 6px; bottom: 6px; flex-direction: column; gap: 3px; }
    .map-legend .legend-item { gap: 0.3rem; margin-bottom: 0; }
    .map-legend .legend-dot { width: 7px; height: 7px; }
    .map-legend-text { display: none; }   /* 移动端只显示色点，文字隐藏 */
    .footprint-marker .marker-label { display: none; }  /* 移动端隐藏国家名 label，避免重叠 */
    .footprint-marker .marker-pulse { transform: scale(0.7); }
    .footprint-marker .marker-dot { transform: scale(0.85); }
}

/* SVG 通用 */
.world-map-svg { position: absolute; inset: 0; width: 100%; height: 100%; }

/* 地图国家 */
.map-country {
    fill: #ffffff;
    fill-opacity: 0.82;
    stroke: #7a9bbf;
    stroke-width: 0.7;
    stroke-opacity: 0.75;
    vector-effect: non-scaling-stroke;
    transition: fill-opacity 0.2s, stroke 0.2s;
}
.map-country:hover { fill-opacity: 0.95; }
.map-country.has-marker {
    fill: #2563eb;
    fill-opacity: 0.18;
    stroke: #2563eb;
    stroke-width: 1.2;
    stroke-opacity: 0.75;
}
.map-country.has-marker-major { fill: #1e3a8a; fill-opacity: 0.22; }
.map-country.has-marker-core  { fill: #f59e0b; fill-opacity: 0.30; stroke: #d97706; stroke-width: 1.4; }

/* 边缘羽化：让裁断处（极地/极南）自然淡入背景 */
.world-map-stage::before,
.world-map-stage::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    height: 80px;
    z-index: 5;
    pointer-events: none;
}
.world-map-stage::before {
    top: 0;
    background: linear-gradient(to bottom, rgba(214,229,243,1) 0%, rgba(214,229,243,0) 100%);
}
.world-map-stage::after {
    bottom: 0;
    background: linear-gradient(to top, rgba(214,229,243,1) 0%, rgba(214,229,243,0) 100%);
}

/* 地图标记 */
.footprint-marker {
    position: absolute;
    transform: translate(-50%, -50%);
    cursor: pointer;
    z-index: 10;
    transition: transform var(--tr-base);
}
.footprint-marker:hover {
    transform: translate(-50%, -50%) scale(1.3);
    z-index: 20;
}

.marker-pulse {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 36px; height: 36px;
    border-radius: 50%;
    animation: pulseRing 2.2s cubic-bezier(.215,.61,.355,1) infinite;
}
.footprint-marker.core  .marker-pulse { background: rgba(245,158,11,.30); }
.footprint-marker.major .marker-pulse { background: rgba(37,99,235,.25); }
.footprint-marker.normal .marker-pulse{ background: rgba(6,182,212,.30); }

@keyframes pulseRing {
    0%   { transform: translate(-50%,-50%) scale(.5); opacity:1; }
    100% { transform: translate(-50%,-50%) scale(1.8); opacity:0; }
}

.marker-dot {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,.3);
}
.footprint-marker.core   .marker-dot { width:20px; height:20px; background:var(--clr-amber); border-width:3px; box-shadow: 0 2px 10px rgba(245,158,11,.5); }
.footprint-marker.major  .marker-dot { width:15px; height:15px; background:var(--clr-tech); border-width:3px; }
.footprint-marker.normal .marker-dot { width:11px; height:11px; background:var(--clr-cyan); border-width:2px; }

.marker-label {
    position: absolute;
    top: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10,37,64,.92);
    color: #fff;
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-xs);
    font-size: 0.78rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--tr-fast), transform var(--tr-fast), visibility var(--tr-fast);
    pointer-events: none;
}
.footprint-marker:hover .marker-label {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-2px);
}

/* 地图 Tooltip */
.map-tooltip {
    position: absolute;
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-top: 3px solid var(--clr-tech);
    border-radius: var(--radius-md);
    padding: 0.85rem 1rem;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    max-width: 280px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--tr-fast), transform var(--tr-fast), visibility var(--tr-fast);
    pointer-events: none;
}
.map-tooltip.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(-6px);
}
.tooltip-title   { font-size: 0.95rem; font-weight: 700; color: var(--clr-primary); margin-bottom: 4px; }
.tooltip-desc    { font-size: 0.8rem;  color: var(--clr-text-muted); margin-bottom: 6px; line-height: 1.5; }
.tooltip-members { font-size: 0.85rem; font-weight: 700; color: var(--clr-cyan); font-variant-numeric: tabular-nums; }

/* 图例 */
.map-legend {
    position: absolute;
    bottom: 16px; right: 16px;
    background: rgba(255,255,255,.96);
    padding: 0.75rem 0.95rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    z-index: 5;
    backdrop-filter: blur(6px);
    border: 1px solid var(--clr-border-soft);
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 0.78rem;
    color: var(--clr-text-muted);
    margin-bottom: 6px;
}
.legend-item:last-child { margin-bottom: 0; }
.legend-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,.2);
    flex-shrink: 0;
}
.legend-dot.core   { width:14px; height:14px; background:var(--clr-amber); border-width:3px; box-shadow: 0 1px 5px rgba(245,158,11,.4); }
.legend-dot.major  { background: var(--clr-tech); }
.legend-dot.normal { background: var(--clr-cyan); }

/* 统计行 */
.stats-row {
    background: var(--clr-white);
    border-top: 1px solid var(--clr-border);
}
.stat-item {
    padding: 1.75rem 1rem;
    border-right: 1px solid var(--clr-border-soft);
    transition: background var(--tr-fast);
}
.stat-item:last-child { border-right: none; }
.stat-item:hover { background: var(--clr-bg-light); }

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--clr-tech);
    line-height: 1;
    margin-bottom: 0.4rem;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
}
.stat-label {
    font-size: 0.85rem;
    color: var(--clr-text-muted);
    font-weight: 500;
}

/* ----------------------------------------------------------------
   10. 战略工程卡片
---------------------------------------------------------------- */
.section-projects { background: var(--clr-white); }

.project-card {
    display: flex;
    flex-direction: column;
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem 1.5rem;
    color: var(--clr-text);
    height: 100%;
    transition: transform var(--tr-base), box-shadow var(--tr-base), border-color var(--tr-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}
.project-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 4px; height: 0;
    background: var(--grad-tech);
    transition: height var(--tr-base);
}
.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(37,99,235,.3);
    color: var(--clr-text);
}
.project-card:hover::before { height: 100%; }

.project-card-icon {
    width: 60px; height: 60px;
    background: var(--grad-tech);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
    transition: transform var(--tr-base);
    box-shadow: 0 6px 18px rgba(37,99,235,.25);
}
.project-card:hover .project-card-icon { transform: scale(1.1) rotate(-5deg); }

.project-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin-bottom: 0.6rem;
}
.project-card p {
    font-size: 0.875rem;
    color: var(--clr-text-muted);
    flex: 1;
    line-height: 1.65;
}
.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 1rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--clr-tech);
    transition: gap var(--tr-fast);
}
.project-card:hover .project-link { gap: 0.6rem; }

/* ----------------------------------------------------------------
   11. CTA 横幅
---------------------------------------------------------------- */
.section-cta { background: var(--clr-white); }

.cta-card {
    background: var(--grad-primary);
    border-radius: var(--radius-xl);
    padding: 3rem 3.5rem;
    position: relative;
    overflow: hidden;
    color: #fff;
}
.cta-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6,182,212,.18) 0%, transparent 70%);
    pointer-events: none;
}
.cta-card::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: 20%;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
    pointer-events: none;
}

/* ----------------------------------------------------------------
   12. 新闻卡片
---------------------------------------------------------------- */
.section-news { background: var(--clr-bg-light); }

.news-card {
    background: var(--clr-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--clr-border);
    box-shadow: var(--shadow-xs);
    display: flex;
    flex-direction: column;
    transition: transform var(--tr-base), box-shadow var(--tr-base);
    height: 100%;
}
.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.news-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.85rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.news-tag {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.25rem 0.7rem;
    border-radius: var(--radius-full);
    background: rgba(37,99,235,.10);
    color: var(--clr-tech);
    letter-spacing: 0.03em;
}
.news-tag.tag-project { background: rgba(22,163,74,.10); color: var(--clr-success); }
.news-tag.tag-edu     { background: rgba(245,158,11,.12); color: var(--clr-amber-dark); }
.news-tag.tag-system  { background: rgba(6,182,212,.12); color: var(--clr-cyan); }

.news-date {
    font-size: 0.78rem;
    color: var(--clr-text-muted);
    font-variant-numeric: tabular-nums;
}
.news-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin-bottom: 0.65rem;
    line-height: 1.5;
}
.news-excerpt {
    font-size: 0.875rem;
    color: var(--clr-text-muted);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-read-more {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--clr-tech);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: gap var(--tr-fast), color var(--tr-fast);
}
.news-read-more:hover { gap: 0.6rem; color: var(--clr-tech-dark); }

/* ----------------------------------------------------------------
   13. 联系我们
---------------------------------------------------------------- */
.section-contact { background: var(--clr-white); }

.contact-info-card,
.contact-form-card {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-xs);
    height: 100%;
}

.contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--clr-border-soft);
}
.contact-list li:last-child { border-bottom: none; }

.contact-icon {
    width: 38px; height: 38px;
    background: rgba(37,99,235,.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-tech);
    font-size: 0.9rem;
    flex-shrink: 0;
}
.contact-key  { font-size: 0.75rem; color: var(--clr-text-muted); margin-bottom: 2px; }
.contact-val  { font-size: 0.925rem; font-weight: 600; color: var(--clr-text); }

/* 社交按钮 */
.social-links { display: flex; gap: 0.5rem; }
.social-btn {
    width: 38px; height: 38px;
    border-radius: var(--radius-sm);
    background: rgba(37,99,235,.08);
    color: var(--clr-tech);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    transition: background var(--tr-fast), color var(--tr-fast), transform var(--tr-fast);
}
.social-btn:hover {
    background: var(--clr-tech);
    color: #fff;
    transform: translateY(-3px);
}

/* 表单 */
.form-control, .form-select {
    border-radius: var(--radius-sm);
    border: 1px solid var(--clr-border);
    padding: 0.65rem 0.85rem;
    font-size: 0.9rem;
    transition: border-color var(--tr-fast), box-shadow var(--tr-fast);
    color: var(--clr-text);
    background: var(--clr-white);
}
.form-control:focus, .form-select:focus {
    border-color: var(--clr-tech);
    box-shadow: var(--shadow-glow);
    outline: none;
}
.form-label { font-size: 0.875rem; color: var(--clr-text); margin-bottom: 0.35rem; font-weight: 500; }

/* ----------------------------------------------------------------
   14. 按钮通用覆盖
---------------------------------------------------------------- */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: transform var(--tr-fast), box-shadow var(--tr-fast), background var(--tr-fast), color var(--tr-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.btn:focus-visible {
    outline: 2px solid var(--clr-tech);
    outline-offset: 3px;
}
.btn-primary {
    background: var(--clr-tech);
    border: 1px solid var(--clr-tech);
    color: #fff;
}
.btn-primary:hover {
    background: var(--clr-tech-dark);
    border-color: var(--clr-tech-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(37,99,235,.3);
    color: #fff;
}
.btn-outline-primary {
    border-color: var(--clr-tech);
    color: var(--clr-tech);
    background: transparent;
}
.btn-outline-primary:hover {
    background: var(--clr-tech);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(37,99,235,.25);
}
.btn-amber {
    background: var(--grad-amber);
    border: none;
    color: #fff;
    font-weight: 600;
}
.btn-amber:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(245,158,11,.4);
    filter: brightness(1.05);
}
.btn-success { background: var(--clr-success); border: none; }
.btn-success:hover { background: #15803d; transform: translateY(-2px); }

/* ----------------------------------------------------------------
   15. 页脚
---------------------------------------------------------------- */
.site-footer { background: var(--clr-primary); color: rgba(255,255,255,.7); }

.footer-main { border-bottom: 1px solid rgba(255,255,255,.08); }

.footer-brand {
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}
.footer-brand i {
    margin-right: .5rem;
    background: var(--grad-tech);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    font-size: 1.4rem;
}

.footer-desc {
    font-size: 0.875rem;
    color: rgba(255,255,255,.6);
    line-height: 1.75;
    margin-bottom: 0;
}

.footer-social { display: flex; gap: 0.5rem; margin-top: 1.25rem; }
.footer-social a {
    width: 36px; height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,.06);
    color: rgba(255,255,255,.7);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: background var(--tr-fast), color var(--tr-fast), transform var(--tr-fast);
}
.footer-social a:hover {
    background: var(--clr-cyan);
    color: var(--clr-primary);
    transform: translateY(-3px);
}

.footer-heading {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,.9);
    margin-bottom: 1.1rem;
    position: relative;
    padding-bottom: 0.5rem;
}
.footer-heading::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    width: 24px; height: 2px;
    background: var(--clr-cyan);
    border-radius: 1px;
}

.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.55rem; }
.footer-links a {
    font-size: 0.875rem;
    color: rgba(255,255,255,.6);
    transition: color var(--tr-fast), padding-left var(--tr-fast);
    display: inline-flex;
    align-items: center;
}
.footer-links a:hover {
    color: var(--clr-cyan-light);
    padding-left: 4px;
}
.footer-links a::before {
    content: '\f0da';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.6rem;
    margin-right: 0.4rem;
    opacity: 0;
    transition: opacity var(--tr-fast);
    color: var(--clr-cyan);
}
.footer-links a:hover::before { opacity: 1; }

.footer-contact-list { list-style: none; padding: 0; margin: 0; }
.footer-contact-list li {
    font-size: 0.85rem;
    color: rgba(255,255,255,.6);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    line-height: 1.5;
}
.footer-contact-list i {
    color: var(--clr-cyan);
    font-size: 0.82rem;
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.footer-bottom {
    padding: 1.1rem 0;
    background: rgba(0,0,0,.2);
}
.footer-bottom p { color: rgba(255,255,255,.45); margin: 0; }
.footer-legal-link {
    font-size: 0.82rem;
    color: rgba(255,255,255,.5);
    transition: color var(--tr-fast);
}
.footer-legal-link:hover { color: var(--clr-cyan-light); }

/* ----------------------------------------------------------------
   16. 回到顶部按钮
---------------------------------------------------------------- */
.back-to-top-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--grad-tech);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: 0 8px 24px rgba(37,99,235,.35);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--tr-base), transform var(--tr-base), visibility var(--tr-base), box-shadow var(--tr-fast);
}
.back-to-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top-btn:hover {
    box-shadow: 0 12px 28px rgba(37,99,235,.5);
    transform: translateY(-3px);
}

/* ----------------------------------------------------------------
   16.5 滚动进度条
---------------------------------------------------------------- */
.scroll-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: 0;
    background: var(--grad-tech);
    z-index: 1100;
    transition: width 80ms linear;
    box-shadow: 0 0 8px rgba(37,99,235,.4);
}

/* 标记点容器：作为 overlay 叠在 SVG 之上 */
.markers-host {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.markers-host .footprint-marker { pointer-events: auto; }

/* ----------------------------------------------------------------
   17. 入场动画
---------------------------------------------------------------- */
.anim-ready {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}
.anim-in {
    opacity: 1;
    transform: translateY(0);
}

/* ----------------------------------------------------------------
   18. 子页面通用 Page Header
---------------------------------------------------------------- */
.page-header {
    position: relative;
    padding: calc(var(--navbar-h) + 4rem) 0 4rem;
    background: var(--grad-primary);
    color: #fff;
    overflow: hidden;
}
.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(103,232,249,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(103,232,249,0.06) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.page-header::after {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6,182,212,.18) 0%, transparent 70%);
    pointer-events: none;
}
.page-header > .container { position: relative; z-index: 2; }

.page-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: 1rem;
    color: #fff;
    letter-spacing: -0.01em;
}
.page-header h1 .accent { color: var(--clr-cyan-light); }
.page-header .lead {
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    color: rgba(255,255,255,.85);
    font-weight: 400;
    margin-bottom: 0;
}
.page-header .breadcrumb {
    background: none;
    padding: 0;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    justify-content: center;
}
.page-header .breadcrumb-item, .page-header .breadcrumb-item a { color: rgba(255,255,255,.7); }
.page-header .breadcrumb-item.active { color: var(--clr-cyan-light); }
.page-header .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,.4); }

/* ----------------------------------------------------------------
   19. 内页内容区通用组件
---------------------------------------------------------------- */
.section-block { background: var(--clr-white); }
.section-block.alt { background: var(--clr-bg-light); }

.block-title {
    font-size: clamp(1.3rem, 2.5vw, 1.7rem);
    font-weight: 800;
    color: var(--clr-primary);
    margin-bottom: 0.6rem;
    position: relative;
    padding-left: 1rem;
}
.block-title::before {
    content: '';
    position: absolute;
    left: 0; top: 0.45em;
    width: 4px; height: 1.1em;
    background: var(--grad-tech);
    border-radius: 2px;
}

.block-sub {
    color: var(--clr-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    transition: background var(--tr-fast);
}
.feature-item:hover { background: var(--clr-bg-light); }
.feature-item i {
    color: var(--clr-success);
    font-size: 1.3rem;
    margin-top: 2px;
    flex-shrink: 0;
}
.feature-item h6 { font-weight: 700; color: var(--clr-primary); margin-bottom: 2px; }

.timeline { position: relative; padding: 1rem 0; }
.timeline::before {
    content: '';
    position: absolute;
    left: 110px; top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--clr-border) 10%, var(--clr-border) 90%, transparent);
}
.timeline-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem 0;
    align-items: flex-start;
}
.timeline-year {
    flex-shrink: 0;
    width: 90px;
    font-weight: 800;
    color: var(--clr-tech);
    font-size: 1.1rem;
    font-variant-numeric: tabular-nums;
}
.timeline-dot {
    width: 12px; height: 12px;
    border-radius: 50%;
    background: var(--clr-tech);
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px var(--clr-tech);
    margin-top: 6px;
    flex-shrink: 0;
}
.timeline-content { flex: 1; }
.timeline-content h5 { font-size: 1rem; font-weight: 700; color: var(--clr-primary); margin-bottom: 4px; }
.timeline-content p  { font-size: 0.875rem; color: var(--clr-text-muted); margin-bottom: 0; line-height: 1.6; }

/* 组织架构 */
.org-chart {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}
.org-box {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    padding: 1.25rem 1rem;
    text-align: center;
    transition: transform var(--tr-base), box-shadow var(--tr-base), border-color var(--tr-base);
}
.org-box:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--clr-tech); }
.org-box h6 { font-weight: 700; color: var(--clr-primary); margin-bottom: 6px; font-size: 0.95rem; }
.org-box h6 i { color: var(--clr-tech); margin-right: 0.3rem; }
.org-box p  { font-size: 0.78rem; color: var(--clr-text-muted); margin-bottom: 0; }
.org-box.system-box { background: linear-gradient(160deg, rgba(37,99,235,.04), #fff 80%); }

/* CTA 段 */
.cta-section {
    background: var(--grad-primary);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(103,232,249,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(103,232,249,0.04) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* 通用页脚（子页面用的简化版） */
.footer-simple {
    background: var(--clr-primary);
    color: rgba(255,255,255,.6);
    padding: 1.5rem 0;
    font-size: 0.85rem;
}
.footer-simple p { margin: 0; }
.footer-simple a { color: rgba(255,255,255,.5); margin: 0 .25rem; }
.footer-simple a:hover { color: var(--clr-cyan-light); }

/* ----------------------------------------------------------------
   20. 响应式布局
---------------------------------------------------------------- */

/* 超宽屏 */
@media (min-width: 1600px) {
    .container, .container-fluid { max-width: 1480px; }
}

/* 大屏 */
@media (min-width: 1400px) {
    :root { --navbar-h: 76px; }
    .hero-title { font-size: 4.2rem; }
}

/* 中屏（笔记本） */
@media (max-width: 1199.98px) {
    :root { --section-py: 4rem; }
    .hero-stats { padding: 1.1rem 1.5rem; }
    .hero-stat-item { padding: 0 1.25rem; min-width: 90px; }
}

/* 平板 */
@media (max-width: 991.98px) {
    :root { --section-py: 3.5rem; --navbar-h: 64px; }

    .hero-stats { gap: 0.25rem; }
    .hero-stat-item { padding: 0 0.85rem; min-width: 75px; }
    .hero-stat-item strong { font-size: 1.3rem; }

    .world-map-stage { aspect-ratio: 2 / 1; }
    .stat-item { padding: 1.25rem 0.75rem; }
    .stat-number { font-size: 1.65rem; }

    .map-legend { bottom: 8px; right: 8px; padding: 0.55rem 0.7rem; }
    .legend-item { font-size: 0.72rem; }
    .cta-card { padding: 2.5rem 2rem; }

    .page-header { padding: calc(var(--navbar-h) + 3rem) 0 3rem; }

    .footer-main .row > [class*="col-"] { margin-bottom: 1.5rem; }
    .footer-main .row > [class*="col-"]:last-child { margin-bottom: 0; }
}

/* 手机横屏 */
@media (max-width: 767.98px) {
    :root { --section-py: 3rem; }

    .hero-section { min-height: 600px; }
    .hero-stats {
        flex-wrap: wrap;
        gap: 0.5rem;
        padding: 1rem 1.25rem;
    }
    .hero-stat-item { padding: 0.5rem 0.85rem; min-width: 70px; }
    .hero-stat-divider { display: none; }
    .hero-cta-group { flex-direction: column; align-items: stretch; gap: 0.6rem; }
    .btn-hero-primary, .btn-hero-outline, .btn-hero-amber {
        justify-content: center;
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
    }

    .ticker-label { padding: 0 0.85rem; font-size: 0.78rem; }
    .ticker-label::after { display: none; }
    .ticker-item  { font-size: 0.82rem; }

    .world-map-stage { aspect-ratio: 2 / 1; }
    .map-legend { display: none; }
    .stat-item { padding: 1rem 0.5rem; }
    .stat-number { font-size: 1.4rem; }
    .stat-label  { font-size: 0.78rem; }

    .cta-card { padding: 2rem 1.5rem; border-radius: var(--radius-lg); }

    .contact-info-card,
    .contact-form-card { padding: 1.5rem; }

    .footer-main { padding-top: 3rem !important; padding-bottom: 2rem !important; }
    .footer-main .row > [class*="col-"] { text-align: center; }
    .footer-social { justify-content: center; }
    .footer-contact-list li { justify-content: center; }
    .footer-heading::after { left: 50%; transform: translateX(-50%); }

    .back-to-top-btn { bottom: 16px; right: 16px; width: 40px; height: 40px; font-size: 0.875rem; }

    .timeline::before { left: 60px; }
    .timeline-year { width: 50px; font-size: 0.95rem; }
    .timeline-item { gap: 0.85rem; }
}

/* 手机竖屏 */
@media (max-width: 575.98px) {
    :root { --section-py: 2.5rem; }

    .hero-section { min-height: 560px; }
    .hero-badge { font-size: 0.72rem; padding: 0.32rem 0.85rem; }
    .hero-cta-group .btn { font-size: 0.85rem; padding: 0.7rem 0.9rem; }

    .container { padding-left: 1rem; padding-right: 1rem; }
    .vp-card { padding: 1.5rem 1.25rem; }

    .stats-row .stat-item { border-right: none; border-bottom: 1px solid var(--clr-border-soft); }
    .stats-row .stat-item:last-child { border-bottom: none; }

    .cta-card { padding: 1.75rem 1.25rem; border-radius: var(--radius-md); }
    .cta-card::before, .cta-card::after { display: none; }

    .page-header { padding: calc(var(--navbar-h) + 2rem) 0 2.5rem; }
    .page-header .breadcrumb { justify-content: flex-start; }

    .footer-bottom { text-align: center; }
    .footer-bottom .row > [class*="col-"] { text-align: center !important; margin-top: .5rem; }
    .footer-bottom .row > [class*="col-"]:first-child { margin-top: 0; }
}

/* 打印 */
@media print {
    #mainNavbar,
    .hero-section,
    .ticker-bar,
    .scroll-indicator,
    .back-to-top-btn,
    .section-cta,
    .hero-particles,
    .hero-grid,
    .hero-arc { display: none !important; }
    body { font-size: 12pt; }
    .world-map-container { page-break-inside: avoid; }
}

/* ----------------------------------------------------------------
   21. 可访问性
---------------------------------------------------------------- */
@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;
    }
    .hero-particles, .hero-arc, .hero-grid { display: none; }
}

/* 屏幕阅读器专用 */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}