/* ==================================================================
   南京新苏盟智慧科技有限公司 - 企业官网样式表 (优化版)
   1. 设计令牌(CSS变量)  2. 全局基础  3. 导航栏  4. 首页各板块
   5. 内页通用  6. 各内页专属  7. 登录页  8. 滚动动画  9. 响应式
   ================================================================== */

/* ========== 1. 设计令牌 ========== */
:root {
    /* 主色系 - 深蓝由深到浅 */
    --c-navy:      #0A2463;
    --c-navy-1:    #0F2F6B;
    --c-navy-2:    #1E3A8A;
    --c-blue:      #1D4ED8;
    --c-blue-1:    #2563EB;
    --c-blue-2:    #3B82F6;
    --c-blue-3:    #60A5FA;
    --c-blue-4:    #93C5FD;
    --c-steel:     #3E92CC;

    /* 强调色 */
    --c-red:       #DC2626;
    --c-red-dark:  #B91C1C;
    --c-green:     #22C55E;
    --c-amber:     #F59E0B;
    --c-orange:    #F97316;

    /* 文字色 */
    --c-text-1:    #0F172A;
    --c-text-2:    #1E293B;
    --c-text-3:    #334155;
    --c-text-4:    #475569;
    --c-text-5:    #64748B;
    --c-text-6:    #94A3B8;

    /* 背景色 */
    --c-bg-1:      #F8FAFC;
    --c-bg-2:      #F1F5F9;
    --c-bg-3:      #EFF6FF;
    --c-white:     #FFFFFF;

    /* 阴影系统 */
    --sh-sm:   0 2px 8px rgba(0,0,0,0.04);
    --sh-md:   0 4px 16px rgba(0,0,0,0.06);
    --sh-lg:   0 8px 30px rgba(0,0,0,0.08);
    --sh-xl:   0 20px 48px rgba(10,36,99,0.12);
    --sh-blue: 0 8px 24px rgba(37,99,235,0.25);

    /* 圆角 */
    --r-sm: 6px;
    --r-md: 10px;
    --r-lg: 14px;
    --r-xl: 20px;
    --r-full: 9999px;

    /* 过渡 */
    --t-fast: 0.2s ease;
    --t-norm: 0.3s ease;
    --t-slow: 0.5s ease;

    /* 布局 */
    --container-w: 1280px;
    --nav-h: 72px;
}

/* ========== 2. 全局基础 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    color: var(--c-text-2);
    line-height: 1.7;
    background: var(--c-bg-1);
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color var(--t-norm); }
ul { list-style: none; }
img { max-width: 100%; height: auto; }
.container { max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }

/* ========== 3. 导航栏(全站统一) ========== */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 9999;
    transition: all var(--t-norm);
    background: rgba(10, 36, 99, 0.88);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.navbar.scrolled {
    background: rgba(10, 36, 99, 0.97);
    box-shadow: 0 4px 24px rgba(0,0,0,0.18);
}
.nav-wrap { display: flex; justify-content: space-between; align-items: center; height: var(--nav-h); }
.logo-box { display: flex; align-items: center; gap: 12px; color: #fff; }
.logo-box img { height: 80px; width: auto; object-fit: contain; display: block; }
.logo-img {
    height: 40px; width: auto;
    background: linear-gradient(135deg, var(--c-steel), #fff);
    border-radius: var(--r-sm); padding: 0 10px;
    color: var(--c-navy); font-weight: bold; font-size: 18px;
    display: flex; align-items: center; justify-content: center;
}
.logo-text { font-size: 16px; font-weight: 600; color: #fff; line-height: 1.2; height: 48px; display: flex; align-items: center; }
.logo-text h1 {
    font-size: 20px; font-weight: 700; line-height: 1.3;
    background: linear-gradient(135deg, var(--c-blue-4), var(--c-blue-2), var(--c-blue-3));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    letter-spacing: 1px;
}
.logo-text p { font-size: 11px; opacity: 0.8; letter-spacing: 1px; }

/* Logo滚动文字 */
.logo-scroll-wrap { width: 180px; height: 48px; overflow: hidden; position: relative; display: flex; align-items: center; }
.logo-scroll-track { display: flex; flex-direction: column; animation: logoScroll 12s linear infinite; }
.logo-scroll-track span {
    height: 48px; line-height: 48px; font-size: 10px; font-weight: 400;
    letter-spacing: 1px; white-space: nowrap; color: transparent;
    background: linear-gradient(135deg, var(--c-blue-4), var(--c-blue-2), var(--c-blue-3));
    -webkit-background-clip: text; background-clip: text;
}
@keyframes logoScroll { 0%{transform:translateY(0)} 100%{transform:translateY(-192px)} }

/* 菜单 */
.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-menu li a { color: rgba(255,255,255,0.88); font-size: 15px; transition: color var(--t-norm); }
.nav-menu li a:hover { color: var(--c-blue-4); }
.login-btn {
    background: linear-gradient(135deg, var(--c-steel), var(--c-blue-1));
    color: #fff; padding: 8px 20px; border-radius: var(--r-sm);
    font-size: 14px; font-weight: 500; transition: all var(--t-norm);
    box-shadow: 0 4px 12px rgba(62,146,204,0.3);
}
.login-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(62,146,204,0.45); color: #fff !important; }

/* 下拉菜单 */
.dropdown { position: relative; }
.dropdown-toggle { position: relative; display: inline-block; }
.dropdown-toggle::after {
    content: '\f107'; font-family: "Font Awesome 6 Free"; font-weight: 900;
    font-size: 10px; margin-left: 6px; transition: transform var(--t-norm);
}
.dropdown:hover .dropdown-toggle::after { transform: rotate(180deg); }
.dropdown-menu {
    position: absolute; top: 100%; left: 0;
    background: rgba(10, 36, 99, 0.98);
    min-width: 220px; border-radius: var(--r-md); padding: 12px 0;
    box-shadow: 0 12px 32px rgba(0,0,0,0.2);
    opacity: 0; visibility: hidden; transform: translateY(10px);
    transition: all var(--t-norm); z-index: 9999;
    border: 1px solid rgba(255,255,255,0.06);
}
.dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu li { padding: 0 16px; }
.dropdown-menu li a {
    display: block; padding: 8px 16px; color: rgba(255,255,255,0.88);
    font-size: 14px; border-radius: var(--r-sm); transition: all var(--t-norm);
}
.dropdown-menu li a:hover { background: rgba(147,197,253,0.15); color: var(--c-blue-4) !important; }

/* 汉堡菜单 */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 26px; height: 2px; background: #fff; transition: all var(--t-norm); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }

/* 旧版导航(兼容) */
.header { background: var(--c-white); box-shadow: var(--sh-sm); position: sticky; top: 0; z-index: 1000; }
.header-inner { display: flex; justify-content: space-between; align-items: center; height: 80px; }
.nav-list { display: flex; gap: 10px; }
.nav-list > li { position: relative; }
.nav-list > li > a { display: block; padding: 10px 18px; font-size: 15px; color: var(--c-text-3); border-radius: var(--r-sm); }
.nav-list > li > a:hover { color: var(--c-blue-1); background: var(--c-bg-3); }
.nav-list > li > a.active { color: var(--c-blue-1); font-weight: 600; }
.nav-item-dropdown .fa-chevron-down { font-size: 12px; margin-left: 4px; transition: transform var(--t-norm); }
.nav-item-dropdown:hover .fa-chevron-down { transform: rotate(180deg); }
.mobile-menu-btn { display: none; font-size: 24px; cursor: pointer; color: var(--c-text-3); }

/* ========== 4. 首页 - Hero首屏 ========== */
.hero {
    min-height: 100vh; padding-top: var(--nav-h);
    background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-2) 50%, #0F172A 100%);
    position: relative; display: flex; align-items: center; justify-content: center;
    color: #fff; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; width: 100%; height: 100%;
    background-image:
        linear-gradient(rgba(62,146,204,0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(62,146,204,0.08) 1px, transparent 1px);
    background-size: 44px 44px;
}
.hero::after {
    content: ''; position: absolute; width: 900px; height: 900px; border-radius: 50%;
    background: radial-gradient(circle, rgba(62,146,204,0.18) 0%, transparent 65%);
    top: -250px; right: -250px;
}
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 900px; padding: 60px 24px; }
.hero-tag {
    display: inline-block; padding: 6px 20px;
    border: 1px solid rgba(62,146,204,0.4); border-radius: var(--c-full, 9999px);
    font-size: 14px; color: var(--c-blue-4); margin-bottom: 24px;
    background: rgba(62,146,204,0.1); backdrop-filter: blur(6px);
}
.hero h1 {
    font-size: 52px; font-weight: 700; line-height: 1.25; margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, var(--c-blue-4) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    text-shadow: 0 0 60px rgba(147,197,253,0.15);
}
.hero p { font-size: 20px; color: rgba(255,255,255,0.75); margin-bottom: 48px; line-height: 1.8; }
.hero-btns { display: flex; gap: 20px; justify-content: center; }
.btn-primary {
    background: linear-gradient(135deg, var(--c-steel), var(--c-blue-1));
    color: #fff; padding: 14px 36px; border-radius: var(--r-md);
    font-size: 16px; font-weight: 500; transition: all var(--t-norm);
    box-shadow: 0 8px 24px rgba(37,99,235,0.3);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(37,99,235,0.45); }
.btn-outline {
    border: 1.5px solid rgba(255,255,255,0.3); color: #fff; padding: 14px 36px;
    border-radius: var(--r-md); font-size: 16px; font-weight: 500; transition: all var(--t-norm);
    backdrop-filter: blur(6px);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.5); transform: translateY(-3px); }
.scroll-down { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,0.5); font-size: 13px; z-index: 2; }

/* ========== 首页 - 通用板块 ========== */
.section { padding: 100px 0; }
.section-head { text-align: center; margin-bottom: 70px; }
.section-head h2 {
    font-size: 38px; color: var(--c-text-1); font-weight: 700; margin-bottom: 16px;
    position: relative; display: inline-block;
}
.section-head h2::after {
    content: ''; position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%);
    width: 60px; height: 3px; border-radius: 2px;
    background: linear-gradient(90deg, var(--c-steel), var(--c-blue-2));
}
.section-head p { color: var(--c-text-5); font-size: 17px; max-width: 600px; margin: 0 auto; }

/* ========== 首页 - 公司概览 ========== */
.overview-section { background: var(--c-white); }
.dev-timeline { display: flex; align-items: stretch; gap: 0; margin-bottom: 40px; position: relative; }
.timeline-card {
    flex: 1; background: var(--c-bg-1); border-radius: var(--r-md);
    padding: 30px 20px; text-align: center; position: relative; margin: 0 12px;
    transition: all var(--t-norm);
}
.timeline-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.timeline-card:not(:last-child)::after {
    content: '→'; position: absolute; right: -20px; top: 50%; transform: translateY(-50%);
    color: var(--c-red); font-size: 24px; font-weight: bold; z-index: 2;
}
.timeline-year { font-size: 28px; font-weight: 700; color: var(--c-red); margin-bottom: 12px; }
.timeline-title { font-size: 20px; font-weight: 600; color: var(--c-text-2); margin-bottom: 12px; }
.timeline-desc { font-size: 14px; color: var(--c-text-5); line-height: 1.7; }
.timeline-card.active { background: var(--c-red); color: #fff; box-shadow: 0 8px 24px rgba(220,38,38,0.25); }
.timeline-card.active .timeline-year,
.timeline-card.active .timeline-title { color: #fff; }
.timeline-card.active .timeline-desc { color: rgba(255,255,255,0.9); }

.overview-banner {
    background: var(--c-red); color: #fff; font-size: 26px; font-weight: 600;
    text-align: center; padding: 30px 40px; border-radius: var(--r-sm);
    line-height: 1.6; margin-bottom: 40px;
    box-shadow: 0 8px 24px rgba(220,38,38,0.2);
}
.core-ability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.ability-card {
    background: var(--c-bg-1); border-radius: var(--r-md); padding: 30px 24px;
    text-align: left; transition: all var(--t-norm);
    border-top: 3px solid transparent;
}
.ability-card:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); border-top-color: var(--c-steel); }
.ability-icon { color: var(--c-red); font-size: 32px; margin-bottom: 16px; display: inline-flex; }
.ability-card h4 { font-size: 22px; color: var(--c-text-2); margin-bottom: 12px; font-weight: 600; }
.ability-card p { color: var(--c-text-5); font-size: 15px; line-height: 1.7; }

/* ========== 首页 - 关于我们 ========== */
.about-wrap { display: grid; grid-template-columns: 1fr 1.2fr; gap: 70px; align-items: center; }
.about-img {
    width: 100%; height: 450px; background: linear-gradient(135deg, #E0F2FE, #BAE6FD);
    border-radius: var(--r-lg); display: flex; align-items: center; justify-content: center;
    color: #0369A1; font-size: 16px; box-shadow: 0 20px 40px rgba(14,116,144,0.1);
}
.about-text h3 { font-size: 30px; color: var(--c-text-1); margin-bottom: 20px; line-height: 1.3; }
.about-text > p { color: var(--c-text-4); font-size: 16px; margin-bottom: 35px; line-height: 1.9; }
.culture-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.culture-card {
    padding: 20px; background: var(--c-white); border-radius: var(--r-md);
    border-left: 4px solid var(--c-steel); box-shadow: var(--sh-sm); transition: all var(--t-norm);
}
.culture-card:hover { transform: translateX(5px); box-shadow: var(--sh-md); }
.culture-card h4 { color: var(--c-navy); margin-bottom: 6px; font-size: 17px; }
.culture-card p { color: var(--c-text-5); font-size: 14px; margin: 0; }

/* ========== 首页 - 产品中心 ========== */
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.product-card {
    background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-2) 100%);
    border-radius: var(--r-lg); padding: 50px 40px; color: #fff;
    position: relative; overflow: hidden; transition: all var(--t-slow);
}
.product-card::before {
    content: ''; position: absolute; top: -50%; right: -30%; width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(62,146,204,0.2) 0%, transparent 70%); transition: all var(--t-slow);
}
.product-card:hover { transform: translateY(-8px); box-shadow: 0 25px 50px rgba(10,36,99,0.25); }
.product-card:hover::before { transform: scale(1.2); }
.product-card h3 { font-size: 26px; margin-bottom: 16px; position: relative; z-index: 1; }
.product-card p { color: #CBD5E1; line-height: 1.8; position: relative; z-index: 1; margin-bottom: 24px; }
.product-link { color: var(--c-steel); font-size: 15px; font-weight: 500; position: relative; z-index: 1; transition: color var(--t-norm); }
.product-link:hover { color: #fff; }

/* ========== 首页 - 核心业务 ========== */
.business-section { background: linear-gradient(180deg, var(--c-bg-1) 0%, var(--c-bg-2) 100%) !important; }
.business-section .section-head h2 {
    background: linear-gradient(135deg, var(--c-navy-2) 0%, var(--c-blue-1) 50%, var(--c-blue-2) 100%) !important;
    -webkit-background-clip: text !important; -webkit-text-fill-color: transparent !important;
    background-clip: text !important; color: transparent !important;
}
.business-section .section-head p { color: var(--c-text-4) !important; }
.business-arch { display: flex; justify-content: center; gap: 16px; margin-bottom: 48px; flex-wrap: wrap; }
.arch-pill {
    display: flex; align-items: center; gap: 10px; padding: 14px 28px; border-radius: 9999px;
    font-size: 15px; font-weight: 600; color: #fff; box-shadow: 0 4px 14px rgba(10,36,99,0.15);
}
.arch-pill i { font-size: 18px; }
.arch-core { background: linear-gradient(135deg, var(--c-navy), var(--c-navy-2)); }
.arch-pillar { background: linear-gradient(135deg, var(--c-blue), var(--c-blue-2)); }
.arch-support { background: linear-gradient(135deg, var(--c-blue-2), var(--c-blue-3)); }

.business-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.b-card {
    background: var(--c-white); border-radius: var(--r-lg); overflow: hidden;
    box-shadow: var(--sh-md); transition: transform var(--t-norm), box-shadow var(--t-norm);
    display: flex; flex-direction: column;
}
.b-card:hover { transform: translateY(-8px); box-shadow: var(--sh-xl); }
.b-card-head { padding: 24px 24px 20px; position: relative; display: flex; align-items: center; gap: 16px; }
.b-card-head::after {
    content: ''; position: absolute; right: -20px; top: -20px; width: 90px; height: 90px;
    border-radius: 50%; background: rgba(255,255,255,0.12);
}
.b-icon {
    width: 52px; height: 52px; border-radius: var(--r-md);
    background: rgba(255,255,255,0.25); display: flex; align-items: center; justify-content: center;
    font-size: 24px; color: #fff; flex-shrink: 0; z-index: 1;
}
.b-num { font-size: 32px; font-weight: 800; color: rgba(255,255,255,0.4); line-height: 1; z-index: 1; }
.b-card-head h3 {
    font-size: 17px; line-height: 1.35; font-weight: 700; z-index: 1; flex: 1;
    background: linear-gradient(135deg, #FFFFFF 0%, #BFDBFE 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; color: transparent;
}
.b-theme-1 .b-card-head { background: linear-gradient(135deg, var(--c-navy), var(--c-navy-2)); }
.b-theme-2 .b-card-head { background: linear-gradient(135deg, var(--c-navy-2), var(--c-blue)); }
.b-theme-3 .b-card-head { background: linear-gradient(135deg, var(--c-blue), var(--c-blue-1)); }
.b-theme-4 .b-card-head { background: linear-gradient(135deg, var(--c-blue-1), var(--c-blue-2)); }
.b-theme-5 .b-card-head { background: linear-gradient(135deg, var(--c-blue-2), var(--c-blue-3)); }
.b-theme-6 .b-card-head { background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-4)); }
.b-card-body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.b-card-body > p { color: var(--c-text-4); font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.b-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.b-tag { padding: 5px 12px; border-radius: var(--r-sm); font-size: 12px; font-weight: 600; }
.b-theme-1 .b-tag { background: #DBEAFE; color: var(--c-navy); }
.b-theme-2 .b-tag { background: #DBEAFE; color: var(--c-navy-2); }
.b-theme-3 .b-tag { background: #E0EBFF; color: var(--c-blue); }
.b-theme-4 .b-tag { background: #E0EBFF; color: var(--c-blue-1); }
.b-theme-5 .b-tag { background: #EBF3FF; color: var(--c-blue-2); }
.b-theme-6 .b-tag { background: #EFF6FF; color: var(--c-blue-1); }
.b-stat { margin-top: auto; }
.b-stat-row { display: flex; justify-content: space-between; font-size: 12px; font-weight: 600; color: var(--c-text-5); margin-bottom: 5px; }
.b-bar { height: 6px; border-radius: 3px; background: #E2E8F0; overflow: hidden; margin-bottom: 12px; }
.b-bar-fill { height: 100%; border-radius: 3px; transition: width 0.6s ease; }
.b-theme-1 .b-bar-fill { background: var(--c-navy-2); }
.b-theme-2 .b-bar-fill { background: var(--c-blue); }
.b-theme-3 .b-bar-fill { background: var(--c-blue-1); }
.b-theme-4 .b-bar-fill { background: var(--c-blue-2); }
.b-theme-5 .b-bar-fill { background: var(--c-blue-3); }
.b-theme-6 .b-bar-fill { background: var(--c-blue-4); }

/* ========== 首页 - AI技术中台 ========== */
.ai-section { background: var(--c-white); }
.ai-arch-wrap { display: grid; grid-template-columns: 62% 36%; gap: 2%; align-items: stretch; }
.ai-left-stack { display: flex; flex-direction: column; gap: 18px; }
.ai-layer-card { padding: 24px 30px; border-radius: var(--r-md); position: relative; }
.layer-sense-box { background: var(--c-bg-1); border: 1px solid #e4e9f2; }
.layer-sense-box h4 { font-size: 24px; color: #1a1a1a; display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.layer-sense-box h4 i { color: var(--c-red); font-size: 26px; }
.layer-sense-box p { color: #555; font-size: 16px; }
.layer-core-box {
    background: var(--c-red); color: #fff; padding: 30px; border-radius: var(--r-md);
    box-shadow: 0 8px 24px rgba(220,38,38,0.2);
}
.layer-core-box h4 { font-size: 26px; display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.layer-core-box h4 i { font-size: 28px; }
.core-engine-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.engine-item { background: #fff; color: #113b3b; padding: 20px; border-radius: var(--r-sm); transition: transform var(--t-norm); }
.engine-item:hover { transform: scale(1.03); }
.engine-item h5 { font-size: 19px; margin-bottom: 6px; }
.engine-item p { font-size: 14px; color: #333; }
.layer-bottom-scene { background: var(--c-bg-1); border: 1px solid #e4e9f2; padding: 16px 30px; display: flex; align-items: center; gap: 12px; }
.layer-bottom-scene h4 { font-size: 22px; display: flex; align-items: center; gap: 8px; color: #1a1a1a; }
.layer-bottom-scene h4 i { color: var(--c-red); }
.scene-tag-list { display: flex; gap: 10px; }
.scene-tag { padding: 4px 14px; background: var(--c-bg-3); border-radius: 20px; font-size: 14px; color: var(--c-navy-2); }
.ai-right-col { display: flex; flex-direction: column; gap: 30px; }
.right-panel h3 { font-size: 24px; margin-bottom: 18px; color: #1a1a1a; }
.panel-list-box { background: var(--c-bg-1); border-radius: var(--r-md); padding: 24px; }
.panel-list-item { display: flex; align-items: center; gap: 12px; font-size: 18px; margin-bottom: 16px; color: #222; }
.panel-list-item i { color: var(--c-red); font-size: 20px; width: 24px; text-align: center; }
.scene-card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.scene-card {
    background: #ffe9d6; padding: 10px 6px; border-radius: var(--r-sm); text-align: center;
    font-size: 15px; color: #783207; display: flex; align-items: center; justify-content: center; gap: 6px;
    transition: all var(--t-norm);
}
.scene-card:hover { background: #FFD8B5; }
.scene-card i { font-size: 16px; }

/* ========== 首页 - 全周期服务 ========== */
.service-section { background: var(--c-bg-2); }
.service-flow { display: flex; justify-content: space-between; align-items: center; margin-bottom: 60px; position: relative; }
.flow-item { text-align: center; flex: 1; position: relative; }
.flow-step {
    width: 70px; height: 70px; background: linear-gradient(135deg, var(--c-steel), var(--c-navy));
    border-radius: 50%; color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: 600; margin: 0 auto 16px; box-shadow: 0 8px 20px rgba(10,36,99,0.2);
    transition: all var(--t-norm);
}
.flow-item:hover .flow-step { transform: scale(1.1); box-shadow: 0 12px 28px rgba(10,36,99,0.3); }
.flow-item h5 { font-size: 16px; color: var(--c-text-1); margin-bottom: 4px; }
.flow-item p { font-size: 13px; color: var(--c-text-5); }
.flow-line { position: absolute; top: 35px; left: 10%; right: 10%; height: 2px; background: #CBD5E1; z-index: 0; }
.service-adv { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.adv-card { background: var(--c-white); padding: 30px; border-radius: var(--r-md); text-align: center; box-shadow: var(--sh-sm); transition: all var(--t-norm); }
.adv-card:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); }
.adv-card h4 { font-size: 20px; color: var(--c-navy); margin-bottom: 10px; }
.adv-card p { color: var(--c-text-5); font-size: 14px; }

/* ========== 首页 - 经典案例 ========== */
.case-section { background: var(--c-bg-2); }
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.case-card { background: var(--c-white); border-radius: var(--r-md); overflow: hidden; box-shadow: var(--sh-sm); transition: all var(--t-slow); }
.case-card:hover { transform: translateY(-8px); box-shadow: var(--sh-lg); }
.case-banner { height: 180px; padding: 24px 28px; display: flex; align-items: center; gap: 16px; position: relative; overflow: hidden; }
.case-banner::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 30px 30px;
}
.case-banner-1 { background: linear-gradient(135deg, var(--c-navy), var(--c-blue)); }
.case-banner-2 { background: linear-gradient(135deg, var(--c-navy-2), var(--c-blue-2)); }
.case-banner-icon {
    width: 56px; height: 56px; border-radius: var(--r-md); background: rgba(255,255,255,0.15);
    display: flex; align-items: center; justify-content: center; font-size: 26px; color: #fff; flex-shrink: 0; z-index: 1;
}
.case-banner-text { z-index: 1; flex: 1; }
.case-banner-title { color: #fff; font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.case-banner-sub { color: rgba(255,255,255,0.75); font-size: 13px; }
.case-banner-stats { display: flex; gap: 20px; z-index: 1; flex-shrink: 0; }
.case-stat { text-align: center; }
.case-stat-num { display: block; font-size: 24px; font-weight: 700; color: #fff; }
.case-stat-label { display: block; font-size: 11px; color: rgba(255,255,255,0.65); margin-top: 2px; }
.case-info { padding: 28px; }
.case-info h3 { font-size: 20px; color: var(--c-text-1); margin-bottom: 12px; }
.case-tag { display: inline-block; padding: 4px 12px; background: #E0F2FE; color: #0369A1; border-radius: var(--r-sm); font-size: 13px; margin-right: 8px; margin-bottom: 12px; }
.case-info p { color: var(--c-text-5); font-size: 14px; line-height: 1.7; }

/* ========== 首页 - 合作伙伴 ========== */
.partner-group { margin-bottom: 48px; }
.partner-group:last-child { margin-bottom: 0; }
.partner-group h4 { font-size: 18px; color: var(--c-text-2); margin-bottom: 28px; padding-left: 12px; border-left: 4px solid var(--c-blue-2); }
.partner-logos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.partner-logo {
    width: 100%; height: 110px; background: var(--c-white); border-radius: var(--r-md);
    display: flex; align-items: center; justify-content: center; color: var(--c-text-3);
    font-weight: 500; font-size: 16px; box-shadow: var(--sh-sm);
    transition: all var(--t-norm); padding: 20px;
}
.partner-logo img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; }
.partner-logo:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }

/* ========== 首页 - 联系我们 ========== */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.5fr; gap: 50px; align-items: center; }
.contact-info h3 { font-size: 28px; color: var(--c-text-1); margin-bottom: 30px; }
.contact-item { display: flex; gap: 16px; margin-bottom: 28px; align-items: flex-start; }
.contact-icon {
    width: 48px; height: 48px; background: linear-gradient(135deg, #E0F2FE, #BAE6FD);
    border-radius: var(--r-md); display: flex; align-items: center; justify-content: center;
    color: #0369A1; flex-shrink: 0; font-weight: bold; font-size: 16px;
}
.contact-text h4 { font-size: 17px; color: var(--c-text-1); margin-bottom: 6px; }
.contact-text p { color: var(--c-text-5); line-height: 1.6; }
#baidu-map { width: 100%; height: 380px; border-radius: var(--r-md); box-shadow: var(--sh-md); overflow: hidden; background: #E2E8F0; }

/* 导航弹窗 */
.nav-guide-icon { color: var(--c-blue-2); cursor: pointer; margin-left: 6px; font-size: 0.82em; transition: all var(--t-norm); vertical-align: middle; }
.nav-guide-icon:hover { color: var(--c-blue-1); transform: scale(1.25); }
.nav-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.45); z-index: 10000; animation: navFadeIn 0.25s ease; }
.nav-overlay.active { display: block; }
.nav-popup {
    display: none; position: fixed; top: 50%; left: 50%; transform: translate(-50%, -46%);
    background: var(--c-white); border-radius: var(--r-xl); box-shadow: 0 16px 48px rgba(0,0,0,0.25);
    padding: 24px; z-index: 10001; width: 320px; max-width: 90vw; animation: navPopIn 0.3s ease;
}
.nav-popup.active { display: block; }
.nav-popup-title { text-align: center; font-size: 17px; font-weight: 700; color: var(--c-navy); margin-bottom: 18px; }
.nav-popup-option {
    display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: var(--r-md);
    color: var(--c-text-3); font-size: 15px; font-weight: 600; transition: all var(--t-fast);
    margin-bottom: 8px; background: var(--c-bg-1);
}
.nav-popup-option:last-of-type { margin-bottom: 0; }
.nav-popup-option:hover { background: var(--c-bg-3); color: var(--c-blue-1); transform: translateX(4px); }
.nav-popup-option i { width: 24px; text-align: center; font-size: 18px; }
.nav-popup-close {
    display: block; width: 100%; margin-top: 14px; padding: 11px; border: none;
    border-radius: var(--r-sm); background: var(--c-bg-2); color: var(--c-text-5);
    font-size: 14px; font-weight: 600; cursor: pointer; transition: background var(--t-fast);
}
.nav-popup-close:hover { background: #E2E8F0; }
@keyframes navFadeIn { from{opacity:0} to{opacity:1} }
@keyframes navPopIn { from{opacity:0;transform:translate(-50%,-42%) scale(0.95)} to{opacity:1;transform:translate(-50%,-46%) scale(1)} }

/* ========== 页脚(全站统一) ========== */
.footer { background: var(--c-navy); color: #CBD5E1; padding: 60px 0 20px; }
.footer-main { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; margin-bottom: 40px; }
.footer-brand h3 { color: var(--c-white); font-size: 22px; margin-bottom: 10px; }
.footer-brand p { font-size: 14px; margin-bottom: 12px; opacity: 0.8; }
.footer-brand .icp { color: var(--c-blue-4); font-size: 13px; }
.footer-contact h4 { color: var(--c-white); font-size: 17px; margin-bottom: 16px; }
.footer-contact-item { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; font-size: 14px; opacity: 0.85; }
.footer-contact-item i { color: var(--c-blue-4); width: 16px; flex-shrink: 0; margin-top: 4px; }
.footer-contact-item span { line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; font-size: 13px; opacity: 0.6; }

/* 旧版页脚(兼容) */
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 35px; padding-bottom: 40px; border-bottom: 1px solid #374151; }
.footer-col h4 { font-size: 17px; color: var(--c-white); margin-bottom: 20px; font-weight: 600; }
.footer-col p { font-size: 14px; line-height: 1.8; color: #9ca3af; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: #9ca3af; }
.footer-col ul li a:hover { color: var(--c-blue-2); padding-left: 4px; }
.contact-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: #9ca3af; margin-bottom: 12px; }
.contact-list li i { color: var(--c-blue-2); margin-top: 4px; font-size: 14px; }
.qrcode-area { display: flex; flex-direction: column; align-items: center; }
.qrcode-placeholder { width: 110px; height: 110px; background-color: #374151; border-radius: var(--r-sm); display: flex; flex-direction: column; align-items: center; justify-content: center; color: #9ca3af; font-size: 12px; }
.qrcode-placeholder i { font-size: 40px; margin-bottom: 8px; }
.qrcode-placeholder p { font-size: 12px; color: #9ca3af; }

/* ========== 5. 内页通用样式 ========== */
.page-header {
    padding-top: 140px; padding-bottom: 80px;
    background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-2) 50%, #0F172A 100%);
    color: var(--c-white); position: relative; overflow: hidden;
}
.page-header::before {
    content: ''; position: absolute; width: 100%; height: 100%; top: 0; left: 0;
    background-image:
        linear-gradient(rgba(62,146,204,0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(62,146,204,0.08) 1px, transparent 1px);
    background-size: 44px 44px;
}
.page-header .container { position: relative; z-index: 2; }
.page-header h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; }
.page-header p { font-size: 18px; color: rgba(255,255,255,0.75); max-width: 700px; }

/* 旧版横幅(兼容) */
.page-banner { position: relative; height: 320px; background: linear-gradient(135deg, var(--c-blue-1) 0%, var(--c-steel) 50%, var(--c-blue-2) 100%); overflow: hidden; }
.banner-overlay { position: absolute; top:0; left:0; right:0; bottom:0; opacity: 0.5; }
.banner-content { position: relative; z-index: 1; height: 320px; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; color: var(--c-white); }
.banner-title { font-size: 42px; font-weight: 700; margin-bottom: 16px; text-shadow: 0 2px 10px rgba(0,0,0,0.2); }
.banner-subtitle { font-size: 18px; opacity: 0.92; max-width: 700px; line-height: 1.8; }

.main-content { padding: 60px 0; }
.section-header { text-align: center; margin-bottom: 45px; }
.section-title { font-size: 32px; font-weight: 700; color: #222; margin-bottom: 12px; position: relative; display: inline-block; }
.section-title::after { content: ""; position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%); width: 50px; height: 3px; background: linear-gradient(90deg, var(--c-blue-1), var(--c-blue-2)); border-radius: 2px; }
.section-desc { font-size: 15px; color: #777; margin-top: 18px; }

/* 三栏布局 */
.three-column-layout { display: grid; grid-template-columns: 1fr 1.2fr 1fr; gap: 25px; margin-bottom: 60px; }
.intro-card, .grid-card, .equipment-card {
    background-color: var(--c-white); border-radius: var(--r-md); padding: 28px;
    box-shadow: var(--sh-sm); transition: transform var(--t-norm), box-shadow var(--t-norm);
}
.intro-card:hover, .grid-card:hover, .equipment-card:hover { transform: translateY(-3px); box-shadow: var(--sh-md); }
.intro-card h3, .grid-card h3, .equipment-card h3 {
    font-size: 20px; color: #222; margin-bottom: 18px; padding-bottom: 12px;
    border-bottom: 2px solid #eef2f7; display: flex; align-items: center; gap: 10px;
}
.intro-card h3 i, .grid-card h3 i, .equipment-card h3 i { color: var(--c-blue-1); }
.intro-card p { font-size: 14px; color: #555; line-height: 1.8; margin-bottom: 14px; text-align: justify; }
.feature-list { margin-top: 18px; }
.feature-list li { padding: 8px 0; font-size: 14px; color: #444; display: flex; align-items: center; gap: 8px; }
.feature-list li i { color: var(--c-green); font-size: 15px; }

/* 九宫格 */
.nine-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; margin-top: 10px; }
.grid-item {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 20px 10px; background: linear-gradient(135deg, var(--c-bg-1) 0%, var(--c-bg-3) 100%);
    border-radius: var(--r-sm); transition: all var(--t-norm); cursor: pointer; text-align: center;
}
.grid-item:hover { background: linear-gradient(135deg, var(--c-blue-1) 0%, var(--c-blue-2) 100%); color: var(--c-white); transform: translateY(-3px); }
.grid-item:hover .grid-icon { background-color: rgba(255,255,255,0.2); color: var(--c-white); }
.grid-icon { width: 50px; height: 50px; border-radius: 50%; background-color: #e8f0fe; color: var(--c-blue-1); display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 10px; transition: all var(--t-norm); }
.grid-item span { font-size: 13px; font-weight: 500; }

/* 设备列表 */
.equipment-list li { display: flex; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px dashed #eef2f7; transition: all var(--t-norm); }
.equipment-list li:last-child { border-bottom: none; }
.equipment-list li:hover { padding-left: 6px; }
.eq-icon { width: 42px; height: 42px; border-radius: var(--r-sm); background: linear-gradient(135deg, #e8f0fe 0%, #d4e3ff 100%); color: var(--c-blue-1); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.eq-info h4 { font-size: 15px; color: #222; margin-bottom: 3px; font-weight: 600; }
.eq-info p { font-size: 12px; color: #888; line-height: 1.4; }

/* 核心价值 */
.core-values { padding-top: 20px; }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.value-item {
    background-color: var(--c-white); border-radius: var(--r-md); padding: 35px 25px;
    text-align: center; box-shadow: var(--sh-sm); transition: all var(--t-norm);
    border-top: 3px solid transparent;
}
.value-item:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); border-top-color: var(--c-blue-1); }
.value-icon { width: 70px; height: 70px; margin: 0 auto 20px; border-radius: 50%; background: linear-gradient(135deg, var(--c-blue-1) 0%, var(--c-blue-2) 100%); color: var(--c-white); display: flex; align-items: center; justify-content: center; font-size: 30px; transition: all var(--t-norm); }
.value-item:hover .value-icon { transform: scale(1.1); }
.value-item h3 { font-size: 20px; color: #222; margin-bottom: 12px; font-weight: 600; }
.value-item p { font-size: 14px; color: #666; line-height: 1.8; }

/* ========== 6. 内页 - 智慧安消(anxiao) ========== */
.safety-section { padding: 80px 0; background: var(--c-bg-1); }
.safety-main { display: flex; gap: 32px; align-items: flex-start; }
.safety-intro { width: 26%; background: var(--c-white); border-radius: var(--r-md); padding: 32px 28px; box-shadow: var(--sh-sm); border-left: 4px solid var(--c-steel); flex-shrink: 0; }
.safety-intro p { color: var(--c-text-4); font-size: 15px; line-height: 2; }
.safety-arch { flex: 1; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.role-list { display: flex; flex-direction: column; gap: 36px; width: 240px; flex-shrink: 0; }
.role-item { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.role-info { display: flex; align-items: center; gap: 12px; }
.role-icon { width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
.role-icon.user { background: #DBEAFE; color: var(--c-blue-1); }
.role-icon.supervise { background: #DCFCE7; color: #16A34A; }
.role-icon.service { background: #FEF3C7; color: #D97706; }
.role-text h4 { font-size: 16px; color: var(--c-text-1); font-weight: 600; margin-bottom: 4px; }
.role-text p { font-size: 13px; color: var(--c-text-5); line-height: 1.5; }
.arrow-right { width: 40px; height: 3px; position: relative; flex-shrink: 0; }
.arrow-right::after { content: ''; position: absolute; top: -5px; right: -7px; border: 6px solid transparent; }
.arrow-blue { background: var(--c-blue-4); }
.arrow-blue::after { border-left-color: var(--c-blue-4); }
.arrow-green { background: #86EFAC; }
.arrow-green::after { border-left-color: #86EFAC; }
.arrow-yellow { background: #FDE047; }
.arrow-yellow::after { border-left-color: #FDE047; }

/* 安消平台九宫格 */
.platform-box { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }
.platform-title { width: 100%; background: var(--c-blue-1); color: var(--c-white); text-align: center; padding: 10px 20px; border-radius: var(--r-md) var(--r-md) 0 0; font-size: 16px; font-weight: 500; }
.platform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: #E2E8F0; padding: 2px; border: 1px solid #E2E8F0; }
.platform-item { width: 100px; padding: 20px 8px; color: var(--c-white); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; font-size: 14px; font-weight: 500; }
.platform-item i { font-size: 22px; }
.item-1 { background: var(--c-blue-2); }
.item-2 { background: #10B981; }
.item-3 { background: var(--c-amber); }
.item-4 { background: var(--c-orange); }
.item-5 { background: #0EA5E9; }
.item-6 { background: #6366F1; }
.item-7 { background: #14B8A6; }
.item-8 { background: var(--c-red); }
.item-9 { background: #EAB308; }
.platform-bottom { width: 100%; background: #E2E8F0; color: var(--c-text-3); text-align: center; padding: 10px 20px; border-radius: 0 0 var(--r-md) var(--r-md); font-size: 15px; font-weight: 500; margin-top: 2px; }

.type-list { display: flex; flex-direction: column; gap: 36px; width: 100px; flex-shrink: 0; }
.type-item { display: flex; align-items: center; justify-content: flex-end; gap: 10px; }
.type-item span { font-size: 14px; color: var(--c-text-5); white-space: nowrap; }
.arrow-left { width: 40px; height: 3px; position: relative; flex-shrink: 0; background: #9CA3AF; }
.arrow-left::after { content: ''; position: absolute; top: -5px; left: -7px; border: 6px solid transparent; border-right-color: #9CA3AF; }

.device-list { width: 20%; display: flex; flex-direction: column; gap: 12px; flex-shrink: 0; }
.device-item { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--c-white); border-radius: var(--r-sm); border: 1px solid #E2E8F0; transition: all var(--t-norm); }
.device-item:hover { box-shadow: var(--sh-sm); border-color: var(--c-steel); }
.device-item i { font-size: 18px; color: var(--c-blue-1); width: 24px; text-align: center; flex-shrink: 0; }
.device-item span { font-size: 14px; color: var(--c-text-3); }

/* 核心价值卡片 */
.core-value { margin-top: 60px; background: var(--c-white); border-radius: var(--r-md); padding: 32px; box-shadow: var(--sh-sm); display: flex; align-items: flex-start; gap: 20px; border-left: 4px solid var(--c-red); }
.core-value-icon { font-size: 32px; color: var(--c-red); flex-shrink: 0; margin-top: 2px; }
.core-value-text h3 { font-size: 20px; color: var(--c-text-1); margin-bottom: 8px; }
.core-value-text p { font-size: 15px; color: var(--c-text-4); line-height: 1.8; }

/* ========== 内页 - 智慧校园平台(xiaoyuan) ========== */
.platform-section { padding: 80px 0; background: var(--c-bg-1); }
.platform-title-bar { display: flex; align-items: center; gap: 12px; margin-bottom: 40px; }
.platform-title-bar .red-bar { width: 8px; height: 36px; background: var(--c-red); border-radius: 2px; }
.platform-title-bar h2 { font-size: 32px; font-weight: 700; color: #333; position: relative; }
.platform-title-bar h2::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 60px; height: 3px; background: var(--c-red); border-radius: 2px; }

/* 演示按钮 */
.demo-btn {
    margin-left: auto; display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 24px; background: linear-gradient(135deg, var(--c-navy), var(--c-blue-1));
    color: var(--c-white); text-decoration: none; border-radius: 9999px;
    font-size: 15px; font-weight: 600; position: relative; overflow: hidden;
    box-shadow: 0 4px 15px rgba(37,99,235,0.35);
    transition: transform var(--t-norm), box-shadow var(--t-norm);
    animation: demoPulse 2.5s ease-in-out infinite;
}
.demo-btn:hover { transform: translateY(-3px) scale(1.03); box-shadow: 0 8px 30px rgba(37,99,235,0.5); }
.demo-btn:active { transform: translateY(-1px) scale(0.98); }
.demo-btn-icon { font-size: 18px; display: flex; align-items: center; animation: demoIconSpin 3s ease-in-out infinite; }
.demo-btn-text { letter-spacing: 1px; }
.demo-btn-arrow { font-size: 13px; transition: transform var(--t-norm); }
.demo-btn:hover .demo-btn-arrow { transform: translateX(6px); }
.demo-btn-glow { position: absolute; top: 0; left: -100%; width: 60%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent); animation: demoShine 3s ease-in-out infinite; }
@keyframes demoPulse { 0%,100%{box-shadow:0 4px 15px rgba(37,99,235,0.35)} 50%{box-shadow:0 4px 25px rgba(37,99,235,0.6),0 0 0 4px rgba(37,99,235,0.1)} }
@keyframes demoShine { 0%{left:-100%} 50%,100%{left:200%} }
@keyframes demoIconSpin { 0%,100%{transform:scale(1)} 50%{transform:scale(1.15)} }

/* 架构图 */
.platform-arch { background: var(--c-white); border-radius: var(--r-md); overflow: hidden; box-shadow: var(--sh-md); }
.arch-row { display: flex; width: 100%; }
.row-label { width: 70px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: var(--c-white); font-size: 18px; font-weight: 600; writing-mode: vertical-rl; letter-spacing: 4px; }
.row-content { flex: 1; padding: 20px 24px; }
.label-user { background: #5BA8E0; }
.layer-user { background: #7DD3FC; }
.user-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.user-item { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--c-white); }
.user-item i { font-size: 36px; }
.user-item span { font-size: 18px; font-weight: 500; }
.label-biz { background: #4A90C9; }
.layer-biz { background: #BFDBFE; }
.biz-grid { display: grid; grid-template-columns: 5fr 2.5fr 2fr 3fr; gap: 16px; position: relative; }
.biz-block { display: flex; flex-direction: column; gap: 12px; position: relative; padding-bottom: 36px; }
.biz-block-title { position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); background: #7D8FA3; color: var(--c-red); padding: 4px 20px; font-size: 20px; font-weight: 700; white-space: nowrap; clip-path: polygon(10% 0%, 90% 0%, 100% 100%, 0% 100%); }
.biz-modules { display: grid; gap: 10px; }
.block-manage .biz-modules { grid-template-columns: repeat(5, 1fr); grid-template-rows: repeat(2, auto); }
.block-service .biz-modules { grid-template-columns: 1fr 1fr; grid-template-rows: auto auto auto; }
.block-service .biz-module:nth-child(3) { grid-column: 1 / -1; text-align: center; }
.block-env .biz-modules { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, auto); }
.block-teach .biz-modules { grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(2, auto); }
.biz-module { background: rgba(255,255,255,0.85); border-radius: var(--r-sm); padding: 10px 8px; }
.biz-module h4 { color: #D97706; font-size: 15px; font-weight: 700; margin-bottom: 6px; text-align: center; border-bottom: 1px solid rgba(217,119,6,0.2); padding-bottom: 4px; }
.biz-module ul { display: flex; flex-direction: column; gap: 2px; }
.biz-module li { font-size: 12px; color: var(--c-text-3); line-height: 1.5; text-align: center; }
.label-ability { background: #3B82B8; }
.layer-ability { background: var(--c-blue-4); }
.ability-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-bottom: 12px; }
.ability-item { background: rgba(255,255,255,0.2); border-radius: var(--r-sm); padding: 16px 12px; text-align: center; border: 1px solid rgba(255,255,255,0.3); }
.ability-item h4 { color: #FBBF24; font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.ability-item p { font-size: 13px; color: var(--c-white); line-height: 1.6; }
.ability-centers { display: grid; grid-template-columns: 3fr 2fr; gap: 16px; }
.center-tag { background: #64748B; color: var(--c-red); text-align: center; padding: 8px; font-size: 18px; font-weight: 700; clip-path: polygon(5% 0%, 95% 0%, 100% 100%, 0% 100%); }
.label-iot { background: #334155; }
.layer-iot { background: #64748B; }
.iot-list { display: grid; grid-template-columns: repeat(15, 1fr); gap: 10px; }
.iot-item { display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--c-white); }
.iot-item i { font-size: 28px; }
.iot-item span { font-size: 13px; white-space: nowrap; }

/* ========== 内页 - AI/软件定制(ai-dev) ========== */
.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ai-card { background: var(--c-white); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-md); transition: transform var(--t-norm), box-shadow var(--t-norm); }
.ai-card:hover { transform: translateY(-6px); box-shadow: var(--sh-xl); }
.ai-card-top { padding: 28px 28px 20px; display: flex; align-items: center; gap: 16px; }
.ai-card-icon { width: 56px; height: 56px; border-radius: var(--r-md); display: flex; align-items: center; justify-content: center; font-size: 24px; color: var(--c-white); flex-shrink: 0; }
.ai-card-top h3 { font-size: 20px; color: var(--c-text-1); font-weight: 700; }
.ai-card-body { padding: 0 28px 24px; }
.ai-card-body p { font-size: 14px; color: var(--c-text-4); line-height: 1.8; margin-bottom: 16px; }
.ai-card-body .feature-list { margin-top: 12px; }
.ai-card-body .feature-list li { font-size: 13px; color: var(--c-text-4); }
.ai-card-body .feature-list li i { color: var(--c-green); font-size: 14px; }
.ai-theme-1 .ai-card-icon { background: linear-gradient(135deg, var(--c-navy), var(--c-navy-2)); }
.ai-theme-2 .ai-card-icon { background: linear-gradient(135deg, var(--c-navy-2), var(--c-blue)); }
.ai-theme-3 .ai-card-icon { background: linear-gradient(135deg, var(--c-blue), var(--c-blue-1)); }
.ai-theme-4 .ai-card-icon { background: linear-gradient(135deg, var(--c-blue-1), var(--c-blue-2)); }
.ai-theme-5 .ai-card-icon { background: linear-gradient(135deg, var(--c-blue-2), var(--c-blue-3)); }
.ai-theme-6 .ai-card-icon { background: linear-gradient(135deg, var(--c-blue-3), var(--c-blue-4)); }

/* AI卡片标签列表 */
.ai-tags { display: flex; flex-direction: column; gap: 8px; }
.ai-tags li { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--c-text-4); }
.ai-tags li i { width: 18px; height: 18px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 9px; flex-shrink: 0; }
.ai-theme-1 .ai-tags li i { background: #DBEAFE; color: var(--c-navy); }
.ai-theme-2 .ai-tags li i { background: #DBEAFE; color: var(--c-navy-2); }
.ai-theme-3 .ai-tags li i { background: #E0EBFF; color: var(--c-blue); }
.ai-theme-4 .ai-tags li i { background: #E0EBFF; color: var(--c-blue-1); }
.ai-theme-5 .ai-tags li i { background: #EBF3FF; color: var(--c-blue-2); }
.ai-theme-6 .ai-tags li i { background: #EFF6FF; color: var(--c-blue-1); }

/* 技术栈标签 */
.tech-badge {
    display: inline-block; padding: 8px 20px;
    background: rgba(255,255,255,0.12); color: #fff;
    border: 1px solid rgba(255,255,255,0.2); border-radius: 9999px;
    font-size: 14px; font-weight: 500; transition: all var(--t-norm);
}
.tech-badge:hover { background: rgba(255,255,255,0.25); transform: translateY(-2px); }

/* 服务流程（AI开发页面专用，加 .flow-steps 前缀避免与首页 .flow-step 冲突） */
.flow-steps { display: flex; align-items: flex-start; justify-content: center; gap: 8px; flex-wrap: wrap; }
.flow-steps .flow-step {
    flex: 1; min-width: 180px; max-width: 240px; text-align: center;
    padding: 32px 20px; background: var(--c-bg-1); border-radius: var(--r-lg);
    transition: all var(--t-norm);
}
.flow-steps .flow-step:hover { background: var(--c-bg-3); transform: translateY(-4px); }
.flow-num {
    width: 48px; height: 48px; margin: 0 auto 16px; border-radius: 50%;
    background: linear-gradient(135deg, var(--c-navy), var(--c-blue-1));
    color: #fff; font-size: 18px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.flow-steps .flow-step h4 { font-size: 17px; color: var(--c-navy); margin-bottom: 8px; }
.flow-steps .flow-step p { font-size: 13px; color: var(--c-text-5); line-height: 1.6; }
.flow-arrow { display: flex; align-items: center; padding-top: 48px; color: var(--c-blue-4); font-size: 20px; }

/* ========== 7. 登录页(buy) ========== */
.login-main { min-height: calc(100vh - var(--nav-h) - 260px); padding: 120px 24px 80px; background: linear-gradient(135deg, var(--c-bg-1) 0%, var(--c-bg-3) 100%); display: flex; align-items: center; justify-content: center; }
.login-card { width: 100%; max-width: 440px; background: var(--c-white); border-radius: var(--r-lg); padding: 48px 40px; box-shadow: 0 10px 40px rgba(10,36,99,0.08); border: 1px solid rgba(62,146,204,0.1); }
.login-title { text-align: center; margin-bottom: 32px; }
.login-title h2 { font-size: 24px; color: var(--c-navy); font-weight: 700; margin-bottom: 8px; line-height: 1.3; }
.login-title p { color: var(--c-text-5); font-size: 14px; }
.login-tabs { display: flex; border-bottom: 1px solid #E2E8F0; margin-bottom: 28px; }
.tab-item { flex: 1; text-align: center; padding: 12px 0; font-size: 15px; color: var(--c-text-5); cursor: pointer; position: relative; transition: color var(--t-norm); }
.tab-item.active { color: var(--c-navy); font-weight: 600; }
.tab-item.active::after { content: ''; position: absolute; bottom: -1px; left: 50%; transform: translateX(-50%); width: 40px; height: 2px; background: linear-gradient(135deg, var(--c-steel), var(--c-navy)); border-radius: 2px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 14px; color: var(--c-text-3); font-weight: 500; }
.form-group input { width: 100%; height: 48px; padding: 0 16px; border: 1px solid #E2E8F0; border-radius: var(--r-sm); font-size: 15px; color: var(--c-text-2); background: var(--c-bg-1); transition: border-color var(--t-norm), box-shadow var(--t-norm); }
.form-group input:focus { outline: none; border-color: var(--c-steel); box-shadow: 0 0 0 4px rgba(62,146,204,0.1); background: var(--c-white); }
.form-group input::placeholder { color: var(--c-text-6); }
.captcha-group { display: flex; gap: 12px; align-items: center; }
.captcha-group input { flex: 1; }
.captcha-img { width: 120px; height: 48px; border: 1px solid #E2E8F0; border-radius: var(--r-sm); background: var(--c-bg-2); cursor: pointer; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-weight: bold; font-size: 18px; letter-spacing: 3px; color: var(--c-navy); user-select: none; transition: border-color var(--t-norm); }
.captcha-img:hover { border-color: var(--c-steel); }
.sms-group { display: flex; gap: 12px; align-items: center; }
.sms-group input { flex: 1; }
.sms-btn { width: 120px; height: 48px; border: none; border-radius: var(--r-sm); background: linear-gradient(135deg, var(--c-steel), var(--c-blue-1)); color: var(--c-white); font-size: 13px; cursor: pointer; flex-shrink: 0; transition: all var(--t-norm); }
.sms-btn:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(62,146,204,0.3); }
.sms-btn:disabled { background: #CBD5E1; cursor: not-allowed; box-shadow: none; }
.login-submit { width: 100%; height: 50px; background: linear-gradient(135deg, var(--c-steel), var(--c-navy)); color: var(--c-white); border: none; border-radius: var(--r-sm); font-size: 16px; font-weight: 500; cursor: pointer; transition: all var(--t-norm); box-shadow: 0 4px 12px rgba(62,146,204,0.2); margin-top: 8px; }
.login-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(62,146,204,0.3); }
.login-tips { margin-top: 24px; text-align: center; }
.login-tips a { color: var(--c-steel); font-size: 14px; transition: color var(--t-norm); }
.login-tips a:hover { color: var(--c-navy); text-decoration: underline; }
.login-divider { margin: 24px 0; text-align: center; position: relative; }
.login-divider::before { content: ''; position: absolute; top: 50%; left: 0; width: 100%; height: 1px; background: #E2E8F0; z-index: 0; }
.login-divider span { background: var(--c-white); padding: 0 16px; color: var(--c-text-6); font-size: 13px; position: relative; z-index: 1; }
.wechat-login { text-align: center; padding: 20px 0; }
.wechat-qrcode { width: 200px; height: 200px; margin: 0 auto 20px; border: 1px solid #E2E8F0; border-radius: var(--r-md); display: flex; align-items: center; justify-content: center; background: var(--c-bg-1); color: #07C160; font-size: 14px; position: relative; }
.wechat-qrcode::before { content: ''; width: 140px; height: 140px; background-image: linear-gradient(#07C160 1px, transparent 1px), linear-gradient(90deg, #07C160 1px, transparent 1px); background-size: 8px 8px; opacity: 0.6; }
.wechat-tip { color: var(--c-text-5); font-size: 14px; }
.wechat-tip strong { color: #07C160; font-weight: 500; }

/* ========== 8. 滚动揭示动画 ========== */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-left.active { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-right.active { opacity: 1; transform: translateX(0); }
.reveal-scale { opacity: 0; transform: scale(0.92); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-scale.active { opacity: 1; transform: scale(1); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ========== 9. 响应式适配 ========== */
@media (max-width: 1200px) {
    .biz-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .iot-list { grid-template-columns: repeat(8, 1fr); }
    .ability-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1024px) {
    .three-column-layout { grid-template-columns: 1fr 1fr; }
    .column-center { grid-column: span 2; order: -1; }
    .values-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 992px) {
    .hero h1 { font-size: 40px; }
    .about-wrap { grid-template-columns: 1fr; gap: 40px; }
    .business-grid { grid-template-columns: repeat(2, 1fr); }
    .b-card-head h3 { font-size: 16px; }
    .product-grid, .case-grid { grid-template-columns: 1fr; }
    .contact-wrap { grid-template-columns: 1fr; }
    .dev-timeline { flex-wrap: wrap; gap: 20px; }
    .timeline-card { flex: 0 0 45%; margin: 0; }
    .timeline-card:not(:last-child)::after { display: none; }
    .core-ability-grid { grid-template-columns: repeat(2, 1fr); }
    .overview-banner { font-size: 20px; padding: 20px; }
    .ai-arch-wrap { grid-template-columns: 1fr; gap: 40px; }
    .page-header h1 { font-size: 36px; }
    .user-list { grid-template-columns: repeat(3, 1fr); }
    .biz-grid { grid-template-columns: 1fr; }
    .block-manage .biz-modules { grid-template-columns: repeat(3, 1fr); }
    .block-teach .biz-modules { grid-template-columns: repeat(2, 1fr); }
    .ability-grid { grid-template-columns: repeat(2, 1fr); }
    .ability-centers { grid-template-columns: 1fr; }
    .ai-grid { grid-template-columns: repeat(2, 1fr); }
    .flow-arrow { display: none; }
    .flow-steps { gap: 16px; }
    .login-card { padding: 40px 32px; }
}
@media (max-width: 768px) {
    .nav-menu {
        position: fixed; top: var(--nav-h); left: -100%; width: 100%; height: calc(100vh - var(--nav-h));
        background: rgba(10, 36, 99, 0.98); flex-direction: column; padding: 50px 0; gap: 25px;
        transition: left var(--t-norm);
    }
    .nav-menu.active { left: 0; }
    .hamburger { display: flex; }
    .dropdown-menu {
        position: static; opacity: 1; visibility: visible; transform: none;
        background: rgba(15, 47, 107, 0.8); box-shadow: none; padding: 0; margin-top: 8px; display: none;
    }
    .dropdown.active .dropdown-menu { display: block; }
    .dropdown-toggle::after { transform: rotate(0); }
    .dropdown.active .dropdown-toggle::after { transform: rotate(180deg); }
    .dropdown-menu li { padding: 0; }
    .dropdown-menu li a { padding: 10px 20px; font-size: 14px; }

    .hero h1 { font-size: 32px; }
    .hero p { font-size: 16px; }
    .hero-btns { flex-direction: column; align-items: center; }
    .section { padding: 70px 0; }
    .section-head h2 { font-size: 30px; }
    .business-grid { grid-template-columns: 1fr; }
    .b-card-head { padding: 18px 20px 16px; }
    .b-card-body { padding: 18px 20px 20px; }
    .b-icon { width: 44px; height: 44px; font-size: 20px; }
    .b-num { font-size: 26px; }
    .culture-grid { grid-template-columns: 1fr; }
    .service-adv { grid-template-columns: 1fr; }
    .about-img { height: 280px; }
    .timeline-card { flex: 0 0 100%; }
    .core-ability-grid { grid-template-columns: 1fr; }
    .overview-banner { font-size: 18px; padding: 18px; }
    .timeline-year { font-size: 24px; }
    .timeline-title { font-size: 18px; }
    .core-engine-grid { grid-template-columns: 1fr; }
    .scene-card-grid { grid-template-columns: repeat(2,1fr); }
    .layer-bottom-scene { flex-direction: column; align-items: flex-start; }
    .partner-logos { grid-template-columns: repeat(2, 1fr); }

    /* 内页适配 */
    .mobile-menu-btn { display: block; }
    .nav { display: none; position: absolute; top: 80px; left: 0; right: 0; background-color: var(--c-white); box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
    .nav.active { display: block; }
    .nav-list { flex-direction: column; gap: 0; }
    .nav-list > li { border-bottom: 1px solid #f0f0f0; }
    .nav-list > li > a { padding: 14px 20px; border-radius: 0; }
    .banner-title { font-size: 30px; }
    .banner-subtitle { font-size: 15px; padding: 0 20px; }
    .page-banner, .banner-content { height: 240px; }
    .three-column-layout { grid-template-columns: 1fr; }
    .column-center { grid-column: span 1; order: 0; }
    .nine-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .grid-item { padding: 15px 8px; }
    .grid-icon { width: 42px; height: 42px; font-size: 18px; }
    .grid-item span { font-size: 12px; }
    .values-grid { grid-template-columns: 1fr 1fr; gap: 15px; }
    .value-item { padding: 25px 18px; }
    .value-icon { width: 56px; height: 56px; font-size: 24px; }
    .value-item h3 { font-size: 17px; }
    .value-item p { font-size: 13px; }
    .footer-top { grid-template-columns: 1fr; gap: 30px; }
    .section-title { font-size: 26px; }
    .main-content { padding: 40px 0; }

    .page-header { padding-top: 120px; padding-bottom: 60px; }
    .page-header h1 { font-size: 30px; }
    .page-header p { font-size: 16px; }
    .platform-section { padding: 60px 0; }
    .safety-section { padding: 60px 0; }
    .safety-main { flex-wrap: wrap; }
    .safety-intro { width: 100%; }
    .safety-arch { width: 100%; justify-content: space-around; flex: none; flex-direction: column; gap: 40px; }
    .row-label { width: 50px; font-size: 15px; letter-spacing: 2px; }
    .row-content { padding: 16px; }
    .user-list { grid-template-columns: repeat(2, 1fr); }
    .block-manage .biz-modules { grid-template-columns: repeat(2, 1fr); }
    .block-env .biz-modules { grid-template-columns: 1fr; }
    .block-service .biz-modules { grid-template-columns: 1fr; }
    .block-teach .biz-modules { grid-template-columns: 1fr; }
    .ability-grid { grid-template-columns: 1fr; }
    .iot-list { grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .ai-grid { grid-template-columns: 1fr; }
    .ai-card-top { padding: 20px; }
    .ai-card-body { padding: 0 20px 20px; }
    .flow-steps .flow-step { min-width: 100%; }
    .demo-btn { margin-left: 0; margin-top: 12px; padding: 8px 18px; font-size: 13px; }

    .login-main { padding: 100px 24px 60px; min-height: calc(100vh - var(--nav-h) - 320px); }
    .login-card { padding: 36px 24px; }
    .login-title h2 { font-size: 22px; }
    .captcha-img, .sms-btn { width: 100px; font-size: 12px; }
}
@media (max-width: 480px) {
    .partner-logos { grid-template-columns: 1fr; }
    .banner-title { font-size: 24px; }
    .banner-subtitle { font-size: 14px; }
    .page-banner, .banner-content { height: 200px; }
    .values-grid { grid-template-columns: 1fr; }
    .section-title { font-size: 22px; }
    .intro-card, .grid-card, .equipment-card { padding: 20px; }
}