/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: #0b1220;
    background: #fff;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    font-feature-settings: "tnum" 1, "ss01" 1;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* SEO 友好的视觉隐藏:搜索引擎可读,屏幕阅读器可读,但视觉上不可见 */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* 数字专用字体栈 - 等宽对齐更精致 */
.num, .stat-num, .hero-card .num, .about-row .about-value, .doctor-value {
    font-family: "DIN Alternate", "Roboto", "SF Pro Display", -apple-system, "PingFang SC", sans-serif;
    font-feature-settings: "tnum" 1, "lnum" 1;
    letter-spacing: -.3px;
}

/* ===== 颜色变量 ===== */
:root {
    --primary: #1769ff;
    --primary-dark: #0a4ed6;
    --primary-darker: #0838a8;
    --primary-light: #e8f1ff;
    --primary-lighter: #f4f8ff;
    --primary-50: #f5f9ff;
    --primary-100: #e8f1ff;
    --primary-200: #d1e2ff;
    --primary-300: #a3c4ff;
    --primary-400: #6b97ff;
    --primary-500: #1769ff;
    --primary-600: #0a4ed6;
    --purple: #7b61ff;
    --purple-light: #f0ecff;
    --cyan: #00b8d9;
    --cyan-light: #e0f7fb;
    --orange: #ff8a3d;
    --orange-light: #fff1e6;
    --green: #22c55e;
    --text: #0b1220;
    --text-2: #475569;
    --text-3: #64748b;
    --text-4: #94a3b8;
    --text-5: #cbd5e1;
    --bg-gray: #f7f8fc;
    --bg-dark: #0b1220;
    --bg-dark-2: #060b16;
    --bg-dark-3: #111a2e;
    --border: #eef1f5;
    --border-2: #e2e6ed;
    --border-3: #d6dbe5;
    /* 五级阴影系统 - 大厂标配 */
    --shadow-xs: 0 1px 2px rgba(15,23,42,.04);
    --shadow-sm: 0 2px 8px rgba(15,23,42,.05), 0 1px 2px rgba(15,23,42,.04);
    --shadow-md: 0 8px 24px rgba(15,23,42,.06), 0 2px 6px rgba(15,23,42,.04);
    --shadow-lg: 0 20px 50px rgba(15,23,42,.10), 0 6px 16px rgba(15,23,42,.05);
    --shadow-xl: 0 32px 80px rgba(15,23,42,.14), 0 12px 32px rgba(15,23,42,.06);
    --shadow-primary: 0 16px 40px rgba(23,105,255,.22), 0 4px 12px rgba(23,105,255,.12);
    --shadow-primary-lg: 0 24px 60px rgba(23,105,255,.28);
    /* 大厂动效曲线 */
    --ease-out: cubic-bezier(.16, 1, .3, 1);
    --ease-in-out: cubic-bezier(.65, 0, .35, 1);
    --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
}

/* ===== 通用按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all .25s cubic-bezier(.4,0,.2,1);
    border: 1px solid transparent;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}
.btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(255,255,255,.3), transparent 70%);
    opacity: 0;
    transition: opacity .3s ease;
}
.btn:hover::after { opacity: 1; }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #4d8dff);
    color: #fff;
    box-shadow: 0 4px 14px rgba(23,105,255,.32);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(23,105,255,.42);
}
.btn-ghost { background: #fff; color: var(--primary); border-color: var(--border-2); box-shadow: var(--shadow-sm); }
.btn-ghost:hover { background: var(--primary-lighter); border-color: var(--primary); transform: translateY(-2px); }
.btn-text { color: var(--text-2); padding: 10px 12px; background: transparent; box-shadow: none; }
.btn-text::after { display: none; }
.btn-text:hover { color: var(--primary); background: var(--primary-light); }
.btn-link {
    color: var(--primary);
    padding: 0;
    background: transparent;
    box-shadow: none;
}
.btn-link::after { display: none; }
.btn-link:hover { gap: 12px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(0,0,0,.18); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn-outline-light:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-text-link { color: var(--primary); font-size: 14px; padding: 8px 0; background: transparent; box-shadow: none; }
.btn-text-link::after { display: none; }
.btn-text-link:hover { gap: 12px; }

/* ===== 顶部公告条 ===== */
.topbar {
    background: linear-gradient(90deg, #0b1220 0%, #142244 50%, #0b1220 100%);
    background-size: 200% 100%;
    color: #fff;
    font-size: 13px;
    padding: 9px 0;
    position: relative;
    overflow: hidden;
    animation: topbarShimmer 8s linear infinite;
    border-bottom: 1px solid rgba(255,255,255,.05);
}
@keyframes topbarShimmer {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}
.topbar-inner { display: flex; justify-content: center; align-items: center; gap: 16px; }
.topbar-text { opacity: .92; letter-spacing: .2px; }
.topbar-link { color: #7daeff; font-weight: 600; position: relative; }
.topbar-link::after {
    content: "";
    position: absolute;
    left: 0; bottom: -2px;
    width: 0; height: 1px;
    background: #7daeff;
    transition: width .3s var(--ease-out);
}
.topbar-link:hover::after { width: 100%; }
.topbar-link:hover { color: #a3c4ff; }
.topbar-divider { color: rgba(255,255,255,.3); margin: 0 4px; }
.topbar-phone {
    color: #ffd700;
    font-weight: 600;
    letter-spacing: .3px;
    transition: color .2s ease;
}
.topbar-phone:hover { color: #ffe44d; }

/* ===== 顶部导航 ===== */
.header {
    position: sticky;
    top: 0;
    background: rgba(255,255,255,.78);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: all .35s var(--ease-out);
}
.header.scrolled {
    box-shadow: 0 4px 24px rgba(15,23,42,.06), 0 1px 0 rgba(15,23,42,.04);
    background: rgba(255,255,255,.92);
    border-bottom-color: var(--border);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; transition: height .35s var(--ease-out); }
.header.scrolled .nav-wrap { height: 60px; }
.logo { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 20px; color: var(--text); letter-spacing: -.3px; }
.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    display: block;
    transition: transform .4s var(--ease-spring);
    border-radius: 8px;
}
.logo:hover .logo-img { transform: scale(1.06); }
.logo-icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, #4d8dff 60%, var(--purple) 100%);
    color: #fff;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 700;
    box-shadow: 0 6px 16px rgba(23,105,255,.35), inset 0 1px 0 rgba(255,255,255,.4);
    position: relative;
    transition: transform .4s var(--ease-spring);
}
.logo:hover .logo-icon { transform: rotate(-8deg) scale(1.06); }
.logo-icon::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(255,255,255,.3), transparent 50%);
    pointer-events: none;
}
.logo-badge {
    font-size: 11px;
    background: linear-gradient(135deg, var(--purple), var(--primary));
    background-size: 200% 100%;
    color: #fff;
    padding: 3px 9px;
    border-radius: 6px;
    font-weight: 600;
    letter-spacing: .3px;
    transition: background-position .6s ease;
    box-shadow: 0 2px 6px rgba(123,97,255,.25);
}
.logo:hover .logo-badge { background-position: 100% 0%; }
.nav { display: flex; gap: 2px; }
.nav-group { position: relative; }
.nav-link {
    padding: 8px 16px;
    color: var(--text-2);
    font-size: 15px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color .2s ease, background .2s ease;
    position: relative;
}
.nav-link .caret { font-size: 10px; opacity: .5; transition: transform .25s var(--ease-out); }
.nav-group:hover .nav-link .caret { transform: rotate(180deg); }
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link:hover { background: var(--primary-50); }
.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px; height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--purple));
    border-radius: 2px;
}

/* 下拉菜单 */
.nav-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(8px) scale(.96);
    background: #fff;
    border-radius: 16px;
    padding: 10px;
    min-width: 280px;
    box-shadow: 0 32px 80px rgba(15,23,42,.16), 0 0 0 1px rgba(15,23,42,.04);
    border: 1px solid var(--border);
    opacity: 0;
    visibility: hidden;
    transition: all .3s var(--ease-out);
    z-index: 100;
    transform-origin: top center;
}
.nav-dropdown::before {
    content: "";
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px; height: 12px;
    background: #fff;
    border-left: 1px solid var(--border);
    border-top: 1px solid var(--border);
}
.nav-group:hover .nav-dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0) scale(1); }
.nav-dropdown a {
    display: flex;
    flex-direction: column;
    padding: 12px 14px;
    border-radius: 10px;
    transition: background .2s ease, transform .2s var(--ease-out);
}
.nav-dropdown a:hover { background: var(--primary-50); transform: translateX(2px); }
.nav-dropdown a strong { color: var(--text); font-size: 14px; font-weight: 600; }
.nav-dropdown a span { color: var(--text-3); font-size: 12px; margin-top: 3px; }

.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-cta-mobile { display: none; }

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none; border: none; cursor: pointer; padding: 8px;
}
.menu-toggle span {
    width: 22px; height: 2px; background: var(--text); border-radius: 2px;
    transition: all .3s ease;
}

/* ===== Hero ===== */
.hero {
    padding: 80px 0 110px;
    background:
        radial-gradient(ellipse at top right, rgba(23,105,255,.08), transparent 60%),
        radial-gradient(ellipse at bottom left, rgba(123,97,255,.06), transparent 60%),
        linear-gradient(180deg, #f5f9ff 0%, #fff 70%);
    position: relative;
    overflow: hidden;
}
/* 噪点纹理 - 大厂质感细节 */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.45'/%3E%3C/svg%3E");
    opacity: .025;
    pointer-events: none;
    z-index: 1;
}
.hero-bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.hero-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: .55;
}
.blob-1 {
    width: 560px; height: 560px;
    background: radial-gradient(circle, rgba(23,105,255,.5), transparent 70%);
    top: -180px; right: -120px;
    animation: float 10s ease-in-out infinite;
}
.blob-2 {
    width: 440px; height: 440px;
    background: radial-gradient(circle, rgba(123,97,255,.4), transparent 70%);
    bottom: -120px; left: -120px;
    animation: float 10s ease-in-out infinite reverse;
}
/* 装饰圆环 - 大厂视觉锚点 */
.hero-rings {
    position: absolute;
    top: 50%; right: -200px;
    transform: translateY(-50%);
    width: 600px; height: 600px;
    pointer-events: none;
    opacity: .5;
}
.hero-ring {
    position: absolute;
    inset: 0;
    border: 1px solid rgba(23,105,255,.15);
    border-radius: 50%;
    animation: ringRotate 30s linear infinite;
}
.hero-ring:nth-child(2) { inset: 60px; border-color: rgba(123,97,255,.12); animation-duration: 40s; animation-direction: reverse; }
.hero-ring:nth-child(3) { inset: 120px; border-color: rgba(0,184,217,.1); animation-duration: 50s; }
@keyframes ringRotate { to { transform: rotate(360deg); } }
.hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(23,105,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(23,105,255,.04) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 25%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 25%, transparent 75%);
}
@keyframes float {
    0%,100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

.hero-inner { display: flex; align-items: center; gap: 60px; position: relative; z-index: 2; }
.hero-text { flex: 1; }
.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, rgba(23,105,255,.08), rgba(123,97,255,.08));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(23,105,255,.2);
    padding: 9px 22px 9px 16px;
    border-radius: 100px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 28px;
    box-shadow: 0 4px 14px rgba(23,105,255,.1);
    animation: pillIn .8s var(--ease-out) both;
}
@keyframes pillIn { from { opacity: 0; transform: translateY(-8px); } }
.pulse-dot {
    width: 8px; height: 8px;
    background: var(--green);
    border-radius: 50%;
    position: relative;
    box-shadow: 0 0 0 3px rgba(34,197,94,.2);
}
.pulse-dot::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--green);
    animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(3); opacity: 0; }
}
.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.15;
    color: var(--text);
    margin-bottom: 24px;
    letter-spacing: -1.5px;
    animation: titleIn 1s var(--ease-out) .1s both;
}
@keyframes titleIn { from { opacity: 0; transform: translateY(20px); } }
.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 50%, var(--primary) 100%);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    animation: gradientFlow 6s ease infinite;
}
@keyframes gradientFlow {
    0%,100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
.hero-desc {
    font-size: 17px;
    color: var(--text-2);
    max-width: 560px;
    margin-bottom: 36px;
    line-height: 1.8;
    animation: titleIn 1s var(--ease-out) .25s both;
}
.hero-btns { display: flex; gap: 16px; margin-bottom: 56px; flex-wrap: wrap; animation: titleIn 1s var(--ease-out) .4s both; }
.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    animation: titleIn 1s var(--ease-out) .55s both;
}
.stat-item { position: relative; }
.stat-num {
    font-size: 38px;
    font-weight: 800;
    color: var(--text);
    line-height: 1;
    letter-spacing: -.5px;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-label { font-size: 13px; color: var(--text-3); margin-top: 10px; letter-spacing: .2px; }
.stat-divider { width: 1px; height: 40px; background: linear-gradient(180deg, transparent, var(--border-2), transparent); }

/* Hero 视觉区 */
.hero-visual {
    flex: 0 0 480px;
    height: 600px;
    position: relative;
    perspective: 1200px;
    animation: titleIn 1.1s var(--ease-out) .35s both;
}
/* 产品图光晕背景 */
.hero-visual::before {
    content: "";
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 110%; height: 110%;
    background: radial-gradient(ellipse at center, rgba(23,105,255,.18), transparent 60%);
    filter: blur(30px);
    pointer-events: none;
    z-index: 0;
}
/* 产品图容器 */
.hero-img-wrap {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: 28px;
    overflow: hidden;
    box-shadow: none;
    border: none;
    background: transparent;
    transform-style: preserve-3d;
    transition: transform .5s var(--ease-out);
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-product-img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    transition: transform .8s var(--ease-out);
}
.hero-img-wrap:hover .hero-product-img { transform: scale(1.06); }
.hero-img-badge {
    position: absolute;
    top: 18px; right: 18px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: rgba(255,255,255,.9);
    backdrop-filter: blur(10px);
    color: var(--text);
    font-size: 12px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 100px;
    box-shadow: 0 4px 12px rgba(15,23,42,.12);
}
.hero-img-tags {
    position: absolute;
    left: 18px; right: 18px; bottom: 18px;
    z-index: 2;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.hero-img-tags .tag-chip {
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    color: var(--primary);
    font-size: 12px;
    padding: 5px 11px;
    border-radius: 100px;
    font-weight: 600;
    border: 1px solid rgba(255,255,255,.5);
    box-shadow: 0 2px 6px rgba(15,23,42,.08);
}
.hero-card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.hero-card-icon {
    width: 52px; height: 52px;
    background: linear-gradient(135deg, var(--primary), var(--purple));
    background-size: 150% 150%;
    color: #fff;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; font-weight: 700;
    box-shadow: 0 8px 20px rgba(123,97,255,.35), inset 0 1px 0 rgba(255,255,255,.3);
    position: relative;
    overflow: hidden;
    animation: gradientFlow 6s ease infinite;
}
.hero-card-icon::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,.4), transparent 60%);
}
.hero-card-title { font-size: 17px; font-weight: 700; color: var(--text); letter-spacing: -.2px; }
.hero-card-status { font-size: 12px; color: var(--text-3); display: flex; align-items: center; gap: 6px; margin-top: 4px; }
.status-dot {
    width: 6px; height: 6px;
    background: var(--green);
    border-radius: 50%;
    animation: blink 1.5s ease-in-out infinite;
    box-shadow: 0 0 0 3px rgba(34,197,94,.2);
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: .4; } }
.hero-card-body { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.mini-chat { display: flex; gap: 8px; align-items: flex-start; animation: chatIn .5s var(--ease-out) both; }
.mini-chat:nth-child(1) { animation-delay: .6s; }
.mini-chat:nth-child(2) { animation-delay: .8s; }
.mini-chat:nth-child(3) { animation-delay: 1s; }
@keyframes chatIn { from { opacity: 0; transform: translateY(8px); } }
.mini-chat.user { flex-direction: row-reverse; }
.mini-avatar {
    width: 28px; height: 28px;
    background: linear-gradient(135deg, var(--primary), var(--purple));
    color: #fff;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 11px; font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(23,105,255,.25);
}
.mini-bubble {
    background: rgba(255,255,255,.6);
    color: var(--text);
    padding: 9px 13px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.55;
    max-width: 80%;
    border: 1px solid rgba(255,255,255,.5);
    backdrop-filter: blur(6px);
}
.mini-chat.user .mini-bubble { background: linear-gradient(135deg, var(--primary), #4d8dff); color: #fff; border-color: transparent; box-shadow: 0 4px 12px rgba(23,105,255,.25); }
.hero-card-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag-chip {
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    padding: 5px 11px;
    border-radius: 100px;
    font-weight: 600;
    border: 1px solid rgba(23,105,255,.15);
}

/* Hero 浮动卡片 */
.hero-float {
    position: absolute;
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 14px 18px;
    box-shadow: 0 20px 50px rgba(15,23,42,.12), 0 4px 10px rgba(15,23,42,.04);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 3;
    border: 1px solid var(--border);
    transform-style: preserve-3d;
}
.float-1 { top: 0; right: -10px; animation: float 6s ease-in-out infinite; }
.float-2 { bottom: 30px; left: -20px; animation: float 6s ease-in-out infinite 1.2s; }
.float-icon {
    width: 38px; height: 38px;
    background: linear-gradient(135deg, var(--primary-light), var(--purple-light));
    border-radius: 11px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    border: 1px solid rgba(23,105,255,.1);
}
.float-text strong { display: block; font-size: 13px; color: var(--text); font-weight: 700; }
.float-text span { font-size: 11px; color: var(--text-3); }

/* 滚动提示 */
.scroll-hint {
    position: absolute;
    bottom: 24px; left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-3);
    font-size: 12px;
}
.scroll-mouse {
    width: 22px; height: 36px;
    border: 2px solid var(--text-4);
    border-radius: 12px;
    position: relative;
}
.scroll-mouse span {
    position: absolute;
    top: 6px; left: 50%;
    transform: translateX(-50%);
    width: 4px; height: 8px;
    background: var(--text-3);
    border-radius: 2px;
    animation: scrollDown 1.8s ease-in-out infinite;
}
@keyframes scrollDown {
    0% { opacity: 1; transform: translate(-50%, 0); }
    100% { opacity: 0; transform: translate(-50%, 14px); }
}

/* ===== 战略合作单位 ===== */
.partners {
    padding: 110px 0;
    background:
        radial-gradient(ellipse at top, rgba(23,105,255,.04), transparent 60%),
        linear-gradient(180deg, #f8fbff 0%, #fff 100%);
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}
.partners-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 16px;
    align-items: stretch;
    position: relative;
    z-index: 2;
}
.partner-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 0;
    padding: 24px 12px;
    background: #fff;
    border: 1px solid var(--border-2);
    border-radius: 18px;
    transition: all .4s var(--ease-out);
    position: relative;
    overflow: hidden;
    height: 100%;
}
/* 顶部渐变光晕装饰 */
.partner-card::after {
    content: "";
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px; height: 90px;
    background: radial-gradient(ellipse at center, rgba(23,105,255,.10), transparent 70%);
    pointer-events: none;
    transition: opacity .4s ease;
    opacity: .6;
}
.partner-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--purple));
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .4s var(--ease-out);
}
.partner-card:hover {
    border-color: rgba(23,105,255,.35);
    box-shadow: 0 24px 60px rgba(23,105,255,.12), 0 8px 20px rgba(15,23,42,.06);
    transform: translateY(-6px);
}
.partner-card:hover::before { transform: scaleX(1); }
.partner-card:hover::after { opacity: 1; }
.partner-logo {
    width: 120px; height: 120px;
    flex-shrink: 0;
    background: #fff;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: none;
    box-shadow: none;
    position: relative;
    z-index: 1;
}
.partner-logo img {
    max-width: 92%;
    max-height: 92%;
    object-fit: contain;
    display: block;
    transition: transform .4s var(--ease-out);
}
.partner-card:hover .partner-logo img { transform: scale(1.10); }
.partner-fallback {
    display: none;
    align-items: center;
    justify-content: center;
    width: 100%; height: 100%;
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    line-height: 1.2;
}
.partner-info { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; min-width: 0; flex: 1; }
.partner-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0;
    line-height: 1.4;
    text-align: center;
    word-break: break-word;
}
.partner-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-50);
    padding: 3px 10px;
    border-radius: 10px;
    letter-spacing: .3px;
    line-height: 1.4;
}

/* ===== 通用 Section ===== */
.section { padding: 110px 0; position: relative; }
.section-gray { background: var(--bg-gray); }
.section-dark { background: var(--bg-dark); color: #fff; position: relative; overflow: hidden; }
.section-dark::before {
    content: "";
    position: absolute;
    top: -200px; right: -200px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(23,105,255,.2), transparent 70%);
    pointer-events: none;
}
.section-dark::after {
    content: "";
    position: absolute;
    bottom: -150px; left: -150px;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(123,97,255,.15), transparent 70%);
    pointer-events: none;
}
.section-head { text-align: center; margin-bottom: 72px; max-width: 760px; margin-left: auto; margin-right: auto; }
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px 5px 10px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 20px;
    letter-spacing: .4px;
    border: 1px solid rgba(23,105,255,.15);
}
.section-eyebrow::before {
    content: "";
    width: 6px; height: 6px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(23,105,255,.2);
}
.section-eyebrow.light { background: rgba(23,105,255,.15); border-color: rgba(23,105,255,.25); }
.section-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -1px;
    line-height: 1.2;
}
.section-title.light { color: #fff; }
.section-sub { font-size: 16px; color: var(--text-3); margin-top: 18px; line-height: 1.7; }
.section-sub.light { color: rgba(255,255,255,.6); }

/* ===== 核心功能 ===== */
.feature-list { display: flex; flex-direction: column; gap: 110px; }
.feature-item {
    display: flex;
    align-items: center;
    gap: 80px;
}
.feature-item.reverse { direction: rtl; }
.feature-item.reverse > * { direction: ltr; }
.feature-text { flex: 1; }
.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    border-radius: 100px;
    margin-bottom: 20px;
    font-weight: 500;
}
.tag-dot {
    width: 6px; height: 6px;
    background: var(--primary);
    border-radius: 50%;
}
.tag-purple { background: var(--purple-light); color: var(--purple); }
.tag-purple .tag-dot { background: var(--purple); }
.tag-cyan { background: var(--cyan-light); color: var(--cyan); }
.tag-cyan .tag-dot { background: var(--cyan); }
.tag-orange { background: var(--orange-light); color: var(--orange); }
.tag-orange .tag-dot { background: var(--orange); }
.feature-title { font-size: 32px; font-weight: 700; margin-bottom: 16px; letter-spacing: -.5px; }
.feature-intro { color: var(--text-2); font-size: 16px; margin-bottom: 24px; line-height: 1.7; }
.feature-points { margin-bottom: 32px; }
.feature-points li {
    padding: 12px 0 12px 32px;
    color: var(--text-2);
    position: relative;
    font-size: 15px;
    border-bottom: 1px dashed var(--border);
}
.feature-points li:last-child { border-bottom: none; }
.feature-points li::before {
    content: "";
    position: absolute;
    left: 0; top: 20px;
    width: 20px; height: 20px;
    background: var(--primary-light);
    border-radius: 50%;
}
.feature-points li::after {
    content: "";
    position: absolute;
    left: 7px; top: 26px;
    width: 6px; height: 3px;
    border-left: 2px solid var(--primary);
    border-bottom: 2px solid var(--primary);
    transform: rotate(-45deg);
}
.feature-points li strong { color: var(--text); font-weight: 600; }

.feature-visual { flex: 0 0 460px; }

/* 三色调色板:每张卡片绑定一种主色,所有内部元素引用对应变量,形成统一色调 */
.visual-blue {
    --accent:        #1769ff;
    --accent-strong: #0a4ed6;
    --accent-soft:   #f3f8ff;
    --accent-tag-bg: #e3eeff;
}
.visual-cyan {
    --accent:        #00b8d9;
    --accent-strong: #0096b3;
    --accent-soft:   #ecfbfd;
    --accent-tag-bg: #d6f5fb;
}
.visual-purple {
    --accent:        #7b61ff;
    --accent-strong: #5b3fff;
    --accent-soft:   #f3f0ff;
    --accent-tag-bg: #e8e2ff;
}
.visual-orange {
    --accent:        #ff8a3d;
    --accent-strong: #d96b1f;
    --accent-soft:   #fff6ee;
    --accent-tag-bg: #ffe6cf;
}

.visual-card {
    border-radius: 20px;
    padding: 24px 20px;
    color: var(--text);
    background: linear-gradient(180deg, var(--accent-soft) 0%, #ffffff 40%);
    min-height: 320px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    transition: transform .4s ease, box-shadow .4s ease;
    border: 1px solid var(--accent-tag-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}
.visual-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 28px 60px rgba(15,23,42,.14), 0 8px 20px rgba(15,23,42,.07);
}
.visual-card-glow {
    position: absolute;
    top: -55%; right: -28%;
    width: 78%; height: 78%;
    background: radial-gradient(circle, var(--accent) 0%, transparent 62%);
    opacity: .08;
    pointer-events: none;
}
/* 顶部彩色条 */
.visual-blue::before, .visual-cyan::before, .visual-purple::before, .visual-orange::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    z-index: 3;
}
.visual-blue::before   { background: linear-gradient(90deg, #1769ff, #4d8dff); }
.visual-cyan::before   { background: linear-gradient(90deg, #00b8d9, #4dd4ed); }
.visual-purple::before { background: linear-gradient(90deg, #7b61ff, #a586ff); }
.visual-orange::before { background: linear-gradient(90deg, #ff8a3d, #ffb066); }

/* 主视觉配图容器:正方形,匹配方图比例 */
.visual-hero {
    position: relative;
    z-index: 1;
    width: 100%;
    aspect-ratio: 1;
    max-width: 380px;
    margin: 0 auto;
    border-radius: 16px;
    background:
        radial-gradient(circle at 50% 40%, var(--accent-soft) 0%, #ffffff 75%);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--accent-tag-bg);
}
.visual-hero img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform .8s var(--ease-out);
    filter: drop-shadow(0 14px 32px rgba(15,23,42,.22));
}
.visual-card:hover .visual-hero img { transform: scale(1.05); }

/* 配图下方标题 + 小标签 */
.visual-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}
.visual-title > span:first-child {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: .2px;
    color: var(--accent-strong);
}
.visual-mini-tag {
    font-size: 11px;
    font-weight: 600;
    background: var(--accent-tag-bg);
    color: var(--accent-strong);
    padding: 4px 10px;
    border-radius: 20px;
    letter-spacing: .3px;
}
.visual-content { display: flex; flex-direction: column; gap: 12px; position: relative; z-index: 1; }
.chat-bubble {
    max-width: 85%;
    padding: 14px 18px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.5;
}
.chat-bubble.bot {
    background: rgba(255,255,255,.22);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    backdrop-filter: blur(4px);
}
.chat-bubble.user {
    background: #fff;
    color: var(--text);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
    box-shadow: 0 4px 14px rgba(0,0,0,.1);
}

.visual-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    position: relative;
    z-index: 1;
}
.grid-item {
    background: #f7f8fc;
    padding: 24px 16px;
    border-radius: 12px;
    text-align: center;
    font-size: 15px;
    font-weight: 500;
    border: 1px solid var(--accent-tag-bg);
    transition: background .25s ease, border-color .25s ease;
}
.grid-item:hover { background: var(--accent-soft); border-color: var(--accent); }
.grid-icon { display: block; font-size: 28px; margin-bottom: 8px; }

.visual-list { display: flex; flex-direction: column; gap: 10px; position: relative; z-index: 1; }
.list-item {
    display: flex; justify-content: space-between; align-items: center;
    background: #f7f8fc;
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 15px;
    color: var(--text);
    border: 1px solid var(--border);
    transition: background .25s ease, border-color .25s ease;
}
.list-item:hover { background: var(--accent-soft); border-color: var(--accent-tag-bg); }
.list-item .tag {
    font-size: 12px;
    font-weight: 600;
    background: var(--accent-tag-bg);
    color: var(--accent-strong);
    padding: 3px 10px;
    border-radius: 100px;
}

.visual-doctor { display: flex; flex-direction: column; gap: 16px; position: relative; z-index: 1; }
.doctor-row {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-2);
}
.doctor-row:last-child { border-bottom: none; padding-bottom: 0; }
.doctor-label { font-size: 14px; color: var(--text-3); }
.doctor-value { font-size: 17px; font-weight: 700; color: var(--accent-strong); }

/* ===== 应用场景 ===== */
.scene-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.scene-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
    transition: all .3s cubic-bezier(.4,0,.2,1);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}
.scene-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .3s ease;
}
.scene-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,.1);
    border-color: transparent;
}
.scene-card:hover::before { transform: scaleX(1); }
.scene-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
    transition: transform .3s ease;
}
.scene-card:hover .scene-icon { transform: scale(1.08); }
.scene-icon svg { width: 28px; height: 28px; }
.icon-blue { background: var(--primary-light); color: var(--primary); }
.icon-purple { background: var(--purple-light); color: var(--purple); }
.icon-cyan { background: var(--cyan-light); color: var(--cyan); }
.icon-orange { background: var(--orange-light); color: var(--orange); }
.scene-title { font-size: 19px; font-weight: 600; margin-bottom: 10px; }
.scene-desc { font-size: 14px; color: var(--text-2); line-height: 1.75; margin-bottom: 16px; }
.scene-link { color: var(--primary); font-size: 14px; font-weight: 500; }
.scene-link:hover { gap: 4px; }

/* ===== 部署方案 ===== */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.solution-card {
    position: relative;
    background: #fff;
    border-radius: 18px;
    padding: 40px 32px;
    border: 1px solid var(--border);
    transition: all .3s cubic-bezier(.4,0,.2,1);
}
.solution-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-primary);
    transform: translateY(-8px);
}
.solution-hot {
    border-color: var(--primary);
    border-width: 2px;
    background: linear-gradient(180deg, var(--primary-lighter), #fff 40%);
}
.hot-badge {
    position: absolute;
    top: -12px; right: 24px;
    background: linear-gradient(135deg, var(--primary), #4d8dff);
    color: #fff;
    font-size: 12px;
    padding: 5px 14px;
    border-radius: 100px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(23,105,255,.4);
}
.solution-icon {
    width: 64px; height: 64px;
    background: linear-gradient(135deg, var(--primary-light), #d4e4ff);
    color: var(--primary);
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 24px;
    transition: transform .3s ease;
}
.solution-card:hover .solution-icon { transform: rotate(-5deg) scale(1.05); }
.solution-icon svg { width: 32px; height: 32px; }
.solution-title { font-size: 22px; font-weight: 700; margin-bottom: 18px; }
.solution-list { margin-bottom: 24px; }
.solution-list li {
    padding: 10px 0 10px 28px;
    color: var(--text-2);
    position: relative;
    font-size: 15px;
}
.solution-list li::before {
    content: "";
    position: absolute;
    left: 0; top: 16px;
    width: 18px; height: 18px;
    background: var(--primary-light);
    border-radius: 50%;
}
.solution-list li::after {
    content: "";
    position: absolute;
    left: 6px; top: 22px;
    width: 6px; height: 3px;
    border-left: 2px solid var(--primary);
    border-bottom: 2px solid var(--primary);
    transform: rotate(-45deg);
}

/* ===== 资质认证 ===== */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}
.cert-item {
    background: #fff;
    border-radius: 14px;
    padding: 32px 16px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all .3s ease;
}
.cert-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}
.cert-icon {
    width: 56px; height: 56px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px;
}
.cert-icon svg { width: 28px; height: 28px; }
.cert-name { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.cert-level { font-size: 13px; color: var(--text-3); }

/* ===== 产品矩阵 ===== */
.product-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}
.product-card {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 22px;
    padding: 32px 28px 36px;
    transition: all .35s var(--ease-out);
    backdrop-filter: blur(8px);
    position: relative;
    overflow: hidden;
}
.product-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform: scaleX(0);
    transition: transform .4s ease;
}
.product-card:hover { background: rgba(255,255,255,.1); transform: translateY(-8px); border-color: rgba(23,105,255,.3); }
/* 产品图片 */
.product-img {
    width: 100%;
    height: 280px;
    margin-bottom: 24px;
    border-radius: 16px;
    overflow: hidden;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.product-img img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    transition: transform .6s var(--ease-out);
    filter: drop-shadow(0 16px 32px rgba(0,0,0,.35));
}
.product-card:hover .product-img img { transform: scale(1.08); }
.product-card:hover .product-img { border-color: rgba(23,105,255,.35); }
.product-card:hover::before { transform: scaleX(1); }
.product-card-hot { border-color: rgba(23,105,255,.4); }
.product-badge {
    display: inline-block;
    background: rgba(255,255,255,.15);
    color: #fff;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 100px;
    margin-bottom: 16px;
    font-weight: 500;
}
.product-badge.hot { background: linear-gradient(135deg, var(--primary), #4d8dff); }
.product-name { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.product-desc { font-size: 14px; color: rgba(255,255,255,.65); margin-bottom: 24px; min-height: 42px; line-height: 1.7; }
.product-link { color: #4d8dff; font-size: 15px; font-weight: 500; }
.product-link:hover { color: #7daeff; }

/* ===== CTA 区 ===== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1769ff, #4d8dff, #7b61ff);
    background-size: 200% 200%;
    animation: gradient 8s ease infinite;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: "";
    position: absolute;
    top: -100px; left: -100px;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,.2), transparent 70%);
    pointer-events: none;
}
@keyframes gradient {
    0%,100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
.cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}
.cta-title { font-size: 32px; font-weight: 700; color: #fff; margin-bottom: 10px; letter-spacing: -.5px; }
.cta-desc { font-size: 16px; color: rgba(255,255,255,.9); }
.cta-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 公司风采轮播 ===== */
.gallery-carousel {
    position: relative;
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
}
.carousel-track {
    display: flex;
    transition: transform .6s cubic-bezier(.4, 0, .2, 1);
    will-change: transform;
}
.carousel-slide {
    flex: 0 0 var(--slide-w, 320px);
    width: var(--slide-w, 320px);
    margin-right: var(--slide-gap, 20px);
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: #f1f5f9;
    box-shadow: 0 4px 16px rgba(15,23,42,.08);
}
.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.gallery-caption {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    padding: 18px 18px 14px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,.65) 100%);
}
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,.95);
    color: #1e293b;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,.15);
    transition: all .2s ease;
    z-index: 5;
}
.carousel-btn:hover { background: #fff; }
.carousel-btn.prev { left: 8px; }
.carousel-btn.next { right: 8px; }
.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 16px;
}
.carousel-dots .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #cbd5e1;
    cursor: pointer;
    transition: all .3s ease;
}
.carousel-dots .dot.active {
    background: var(--primary);
    width: 18px;
    border-radius: 3px;
}

/* 响应式 */
@media (max-width: 768px) {
    .carousel-btn { width: 36px; height: 36px; }
    .gallery-caption { font-size: 14px; padding: 14px 14px 10px; }
}
@media (max-width: 480px) {
    .carousel-btn { width: 32px; height: 32px; }
    .gallery-caption { font-size: 13px; padding: 12px 12px 8px; }
}

/* ===== 页脚 ===== */
.footer { background: var(--bg-dark-2); color: rgba(255,255,255,.7); padding-top: 70px; }
.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    padding-bottom: 50px;
    flex-wrap: wrap;
}
.footer-brand { max-width: 320px; }
.footer .logo { color: #fff; margin-bottom: 16px; }
.footer .logo-img {
    height: 40px;
    filter: brightness(0) invert(1);
    opacity: .95;
}
.footer .logo:hover .logo-img { filter: brightness(0) invert(1); opacity: 1; }
.footer-desc { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,.5); margin-bottom: 20px; }
.footer-contact { display: flex; flex-direction: column; gap: 10px; }
.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,.7);
}
.contact-item:hover { color: #fff; }
.footer-links { display: flex; gap: 60px; flex-wrap: wrap; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 600; }
.footer-col a {
    display: block;
    color: rgba(255,255,255,.5);
    font-size: 14px;
    padding: 7px 0;
    transition: color .2s ease;
}
.footer-col a:hover { color: #fff; transform: translateX(2px); }
.qrcode { text-align: center; }
.qrcode .qr-img {
    width: 110px;
    height: 110px;
    object-fit: contain;
    background: #fff;
    border-radius: 12px;
    padding: 6px;
    margin-bottom: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,.15);
    transition: transform .3s var(--ease-out);
}
.qrcode:hover .qr-img { transform: scale(1.05); }
.qrcode span { font-size: 12px; color: rgba(255,255,255,.5); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 22px 0;
    font-size: 13px;
    color: rgba(255,255,255,.4);
}
.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom-links { display: flex; align-items: center; gap: 8px; }
.footer-bottom-links a { color: rgba(255,255,255,.4); transition: color .2s ease; }
.footer-bottom-links a:hover { color: #fff; }
.divider { color: rgba(255,255,255,.2); }

/* ===== 返回顶部 ===== */
.back-top {
    position: fixed;
    right: 32px; bottom: 32px;
    width: 48px; height: 48px;
    background: linear-gradient(135deg, var(--primary), #4d8dff);
    color: #fff;
    border: none;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all .3s cubic-bezier(.4,0,.2,1);
    box-shadow: 0 8px 20px rgba(23,105,255,.4);
    z-index: 999;
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(23,105,255,.5); }
.back-top svg { width: 22px; height: 22px; }

/* ===== 滚动渐入动画 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .8s ease, transform .8s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== 关于我们 ===== */
.about-wrap {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: start;
}
.about-text { padding-top: 8px; }
.about-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 20px;
    letter-spacing: -.3px;
}
.about-desc {
    font-size: 15px;
    color: var(--text-2);
    line-height: 1.85;
    margin-bottom: 36px;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}
.value-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px 20px;
    text-align: center;
    transition: all .3s ease;
    box-shadow: var(--shadow-sm);
}
.value-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--shadow-primary);
}
.value-icon {
    width: 52px; height: 52px;
    background: linear-gradient(135deg, var(--primary-light), #d4e4ff);
    color: var(--primary);
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px;
    transition: transform .3s ease;
}
.value-card:hover .value-icon { transform: rotate(-6deg) scale(1.05); }
.value-icon svg { width: 26px; height: 26px; }
.value-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}
.value-desc {
    font-size: 13px;
    color: var(--text-3);
    line-height: 1.6;
}

.about-pillars {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    padding: 20px 24px;
    background: var(--primary-lighter);
    border-radius: 14px;
    border-left: 3px solid var(--primary);
}
.pillar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
}
.pillar-check {
    width: 22px; height: 22px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px;
    font-weight: 700;
}

/* 右侧信息卡 */
.about-visual { position: sticky; top: 88px; }
.about-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.about-card-header {
    background: linear-gradient(135deg, var(--primary), #4d8dff);
    color: #fff;
    padding: 22px 28px;
    position: relative;
    overflow: hidden;
}
.about-card-header::before {
    content: "";
    position: absolute;
    top: -30px; right: -30px;
    width: 120px; height: 120px;
    background: radial-gradient(circle, rgba(255,255,255,.2), transparent 70%);
}
.about-card-badge {
    display: inline-block;
    background: rgba(255,255,255,.22);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 10px;
    backdrop-filter: blur(4px);
}
.about-card-title { font-size: 20px; font-weight: 700; }
.about-card-body { padding: 8px 28px 22px; }
.about-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px dashed var(--border);
}
.about-row:last-child { border-bottom: none; }
.about-label {
    font-size: 13px;
    color: var(--text-3);
    flex-shrink: 0;
    min-width: 70px;
}
.about-value {
    font-size: 14px;
    color: var(--text);
    font-weight: 500;
    text-align: right;
    line-height: 1.6;
}

/* ===== 服务覆盖 ===== */
.coverage-wrap {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 32px;
    align-items: stretch;
}
.coverage-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.cov-stat-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px 22px;
    box-shadow: var(--shadow-sm);
    transition: all .3s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.cov-stat-card:hover {
    transform: translateX(4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-primary);
}
.cov-stat-card .cov-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    letter-spacing: -.5px;
}
.cov-stat-card .cov-label {
    font-size: 14px;
    color: var(--text-2);
    font-weight: 500;
}

.cov-region {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 22px;
    box-shadow: var(--shadow-sm);
    margin-top: 8px;
    flex: 1;
}
.cov-region-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.cov-region-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.cov-region-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    transition: background .2s ease;
    cursor: default;
}
.cov-region-item:hover { background: var(--primary-lighter); }
.region-dot {
    width: 8px; height: 8px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 0 4px rgba(23,105,255,.15);
}
.region-dot.branch {
    background: var(--orange);
    box-shadow: 0 0 0 4px rgba(255,138,61,.18);
}
.region-dot.hq {
    background: var(--orange);
    box-shadow: 0 0 0 4px rgba(255,138,61,.25);
    width: 10px; height: 10px;
}
.region-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    min-width: 50px;
}
.region-tag {
    font-size: 11px;
    color: var(--text-3);
    background: var(--bg-gray);
    padding: 2px 9px;
    border-radius: 100px;
    margin-left: auto;
    font-weight: 500;
}
.region-tag-hq {
    background: var(--orange-light);
    color: var(--orange);
    font-weight: 700;
}

/* 部署省份 TOP 柱状条 */
.cov-province-bars {
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.bar-row {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
}
.bar-name {
    width: 32px;
    color: var(--text-2);
    font-weight: 600;
    flex-shrink: 0;
}
.bar-track {
    flex: 1;
    height: 8px;
    background: var(--bg-gray);
    border-radius: 100px;
    overflow: hidden;
    position: relative;
}
.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--purple));
    border-radius: 100px;
    transform-origin: left;
    animation: barGrow 1.4s var(--ease-out) both;
}
@keyframes barGrow {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}
.bar-val {
    width: 18px;
    text-align: right;
    color: var(--text);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* 地图区 */
.coverage-map {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.map-container {
    width: 100%;
    height: 680px;
    background: #ffffff;
    position: relative;
}
#mapChart {
    width: 100%;
    height: 100%;
    min-height: 680px;
}
/* ECharts tooltip 已经在 JS 里配,这里只是备用 */


/* 图例 */
.map-legend {
    position: absolute;
    top: 16px; left: 16px;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 10px 14px;
    box-shadow: 0 8px 24px rgba(15,23,42,.08);
    z-index: 5;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    border: 1px solid rgba(255,255,255,.6);
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-2);
    font-weight: 500;
}
.legend-marker {
    width: 14px; height: 14px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,.15);
}
.legend-marker.marker-hq {
    background: #e11d48;
    border-radius: 0;
    transform: rotate(45deg);
    box-shadow: 0 1px 4px rgba(225,29,72,.4);
}
.legend-marker.marker-branch {
    background: var(--orange);
    box-shadow: 0 1px 4px rgba(255,138,61,.4);
}
.legend-marker.marker-deploy {
    background: var(--primary);
    width: 10px; height: 10px;
    box-shadow: 0 1px 4px rgba(23,105,255,.4);
}
.legend-tip {
    margin-left: auto;
    color: var(--text-4);
    font-size: 11px;
}
.legend-stats {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--text-3);
    padding-left: 14px;
    margin-left: 4px;
    border-left: 1px solid var(--border-2);
}
.legend-stats b {
    color: var(--primary);
    font-weight: 800;
    font-size: 14px;
    font-variant-numeric: tabular-nums;
}
.legend-stats .sep {
    width: 1px;
    height: 10px;
    background: var(--border-3);
}
.legend-tip-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 0 3px rgba(0,184,217,.2);
    animation: legendPulse 1.6s ease-in-out infinite;
}
@keyframes legendPulse {
    0%, 100% { opacity: .6; }
    50% { opacity: 1; }
}

/* ===== 响应式 ===== */
@media (max-width: 960px) {
    .hero-inner { flex-direction: column; gap: 50px; }
    .hero-visual { flex: none; width: 100%; max-width: 420px; height: 440px; margin: 0 auto; }
    .hero-title { font-size: 36px; }
    .hero-stats { gap: 20px; }
    .stat-num { font-size: 28px; }
    .stat-divider { display: none; }

    .feature-item, .feature-item.reverse { flex-direction: column; direction: ltr; gap: 40px; }
    .feature-visual { flex: none; width: 100%; max-width: 460px; margin: 0 auto; }
    .feature-title { font-size: 26px; }

    .scene-grid { grid-template-columns: repeat(2, 1fr); }
    .cert-grid { grid-template-columns: repeat(3, 1fr); }
    .solution-grid, .product-list { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: repeat(4, 1fr); }
    .partner-card { padding: 20px 10px; }
    .partner-logo { width: 110px; height: 110px; }

    .coverage-wrap { grid-template-columns: 1fr; }
    .map-container { height: 420px; }
    .map-legend { padding: 8px 12px; }

    .about-wrap { grid-template-columns: 1fr; gap: 40px; }
    .about-visual { position: static; }
    .about-values { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}

/* ===== 大厂级精细化 v2 ===== */

/* 按钮:光泽流动 + 波纹 */
.btn-primary {
    position: relative;
    overflow: hidden;
    isolation: isolate;
}
.btn-primary::before {
    content: "";
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.4), transparent);
    transition: left .6s var(--ease-out);
    z-index: -1;
}
.btn-primary:hover::before { left: 100%; }
.btn-primary::after {
    background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,.35), transparent 60%);
    transition: opacity .25s ease;
}

/* 应用场景卡片:光边 + 顶部装饰条 */
.scene-card {
    position: relative;
    overflow: hidden;
}
.scene-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--purple), var(--primary));
    background-size: 200% 100%;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .4s var(--ease-out);
}
.scene-card:hover::before { transform: scaleX(1); }
.scene-card::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: 17px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(23,105,255,.4), transparent 60%);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity .3s ease;
    pointer-events: none;
}
.scene-card:hover::after { opacity: 1; }

/* 产品卡片 */
.product-card {
    position: relative;
    overflow: hidden;
}
.product-card::after {
    content: "";
    position: absolute;
    top: -50%; right: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at center, rgba(23,105,255,.08), transparent 60%);
    opacity: 0;
    transition: opacity .4s ease;
    pointer-events: none;
}
.product-card:hover::after { opacity: 1; }

/* visual-card 增强:白底卡用对应色淡描边作为悬停高亮 */
.visual-card {
    position: relative;
    overflow: hidden;
}
.visual-card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 20px;
    border: 1px solid var(--accent);
    pointer-events: none;
    opacity: 0;
    transition: opacity .3s ease;
    z-index: 2;
}
.visual-card:hover::after { opacity: .35; }
.visual-glow-rotate {
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--accent), transparent 30%);
    animation: rotateGlow 8s linear infinite;
    opacity: .08;
    pointer-events: none;
}
@keyframes rotateGlow { to { transform: rotate(360deg); } }

/* 通用卡片悬停光效 */
.scene-icon, .product-card .product-badge {
    transition: transform .3s var(--ease-spring);
}
.scene-card:hover .scene-icon { transform: scale(1.08) rotate(-4deg); }
.product-card:hover .product-badge { transform: scale(1.05); }

/* 链接箭头微动效 */
.btn-link, .product-link {
    transition: gap .25s var(--ease-out);
}

/* 数字滚动渐变 */
.stat-num.is-counting {
    background: linear-gradient(135deg, var(--primary), var(--purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* CTA 区按钮发光 */
.cta-box .btn-light {
    box-shadow: 0 8px 24px rgba(255,255,255,.3);
    transition: all .3s var(--ease-out);
}
.cta-box .btn-light:hover {
    box-shadow: 0 12px 32px rgba(255,255,255,.45);
    transform: translateY(-3px);
}

/* 渐入动画 v2 - 更流畅 */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
    will-change: opacity, transform;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in.delay-1 { transition-delay: .1s; }
.fade-in.delay-2 { transition-delay: .2s; }
.fade-in.delay-3 { transition-delay: .3s; }
.fade-in.delay-4 { transition-delay: .4s; }

/* 链接下划线动效 */
.btn-link {
    position: relative;
}
.btn-link::after {
    content: "";
    position: absolute;
    left: 0; bottom: -2px;
    width: 0; height: 1px;
    background: currentColor;
    transition: width .3s var(--ease-out);
}
.btn-link:hover::after { width: 100%; }

/* 滚动条样式 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-gray); }
::-webkit-scrollbar-thumb {
    background: var(--border-3);
    border-radius: 10px;
    border: 2px solid var(--bg-gray);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-4); }

/* 选中文字样式 */
::selection {
    background: rgba(23,105,255,.2);
    color: var(--primary-dark);
}

/* 加载进入动画 */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================= */
/* ===== 全设备响应式适配 ===== */
/* ============================= */

/* === 平板横屏 / 小笔记本(1024px 及以下)=== */
@media (max-width: 1024px) {
    .container { padding: 0 32px; }
    .hero-title { font-size: 40px; }
    .hero-visual { flex: 0 0 380px; height: 420px; }
    .logo-img { height: 36px; }
    .section { padding: 90px 0; }
    .section-title { font-size: 34px; }
    .map-container { height: 580px; }
}

/* === 平板竖屏 / 大手机(900px 及以下)=== */
@media (max-width: 900px) {
    .hero-inner { flex-direction: column-reverse; gap: 40px; text-align: center; }
    .hero-text { max-width: 100%; }
    .hero-pills { justify-content: center; }
    .hero-cta { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { flex: none; width: 100%; max-width: 440px; height: 380px; margin: 0 auto; }

    .feature-item, .feature-item.reverse { flex-direction: column; direction: ltr; gap: 36px; }
    .feature-visual { flex: none; width: 100%; max-width: 480px; margin: 0 auto; }
    .feature-text { text-align: center; }
    .feature-list { text-align: left; }

    .scene-grid { grid-template-columns: repeat(2, 1fr); }
    .cert-grid { grid-template-columns: repeat(3, 1fr); }
    .solution-grid { grid-template-columns: 1fr; }
    .product-list { grid-template-columns: 1fr; }

    .about-wrap { grid-template-columns: 1fr; gap: 40px; }
    .about-visual { position: static; }
    .about-values { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}

/* === 大手机 / 小平板(768px 及以下)=== */
@media (max-width: 768px) {
    /* 隐藏导航,显示汉堡按钮 */
    .nav, .nav-cta { display: none; }
    .menu-toggle { display: flex; }

    /* 汉堡菜单展开样式 */
    .nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        padding: 16px 24px;
        box-shadow: 0 16px 40px rgba(15,23,42,.12);
        border-top: 1px solid var(--border);
        gap: 4px;
        max-height: calc(100vh - 60px);
        overflow-y: auto;
        z-index: 999;
    }
    .nav.open .nav-group { width: 100%; }
    .nav.open .nav-link {
        width: 100%;
        padding: 12px 14px;
        justify-content: space-between;
        font-size: 15px;
    }
    .nav.open .nav-dropdown {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        background: var(--bg-gray);
        padding: 6px;
        margin: 4px 0 8px 14px;
        min-width: 0;
        max-width: 100%;
    }
    .nav.open .nav-dropdown::before { display: none; }
    .nav.open .nav-dropdown a {
        padding: 10px 12px;
    }
    .nav.open .nav-cta-mobile { display: flex; margin-top: 12px; }
    .nav.open .nav-cta-mobile .btn { width: 100%; justify-content: center; }

    /* 顶部公告条 */
    .topbar { padding: 8px 0; }
    .topbar-text { font-size: 12px; }

    /* Logo 缩小 */
    .logo { gap: 8px; font-size: 17px; }
    .logo-img { height: 32px; }
    .logo-badge { font-size: 10px; padding: 2px 7px; }

    /* 合作单位 4 列 */
    .partners-grid { grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .partners { padding: 80px 0; }
    .partner-card { padding: 18px 10px; }
    .partner-logo { width: 100px; height: 100px; }
    .hero-rings { display: none; }

    /* Hero 区 */
    .hero { padding: 40px 0 70px; }
    .hero-title { font-size: 30px; }
    .hero-desc { font-size: 15px; }
    .hero-pills { gap: 8px; }
    .hero-pill { font-size: 12px; padding: 5px 12px; }
    .hero-stats { gap: 16px; flex-wrap: wrap; justify-content: center; }
    .stat-num { font-size: 24px; }
    .stat-divider { display: none; }
    .hero-visual { height: 340px; max-width: 360px; }
    .hero-img-wrap { top: 15px; left: 15px; right: 15px; bottom: 15px; }

    /* Section */
    .section { padding: 70px 0; }
    .section-title { font-size: 26px; }
    .section-sub { font-size: 14px; }
    .section-eyebrow { font-size: 12px; }

    /* 核心功能 */
    .feature-title { font-size: 22px; }
    .feature-desc { font-size: 14px; }
    .feature-item { gap: 30px; }

    /* 应用场景 */
    .scene-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .scene-card { padding: 20px 16px; }
    .scene-title { font-size: 16px; }
    .scene-desc { font-size: 13px; }

    /* 资质认证 */
    .cert-grid { grid-template-columns: repeat(2, 1fr); }

    /* 核心功能配图 */
    .visual-hero { max-width: 320px; }
    .visual-card { padding: 20px 18px; }

    /* 地图 */
    .map-container { height: 480px; }
    #mapChart { min-height: 480px; }
    .map-legend {
        top: 12px; left: 12px;
        padding: 8px 12px;
        gap: 10px;
        flex-wrap: wrap;
        max-width: calc(100% - 24px);
    }
    .legend-stats {
        flex-wrap: wrap;
        gap: 8px;
        padding-left: 0;
        margin-left: 0;
        border-left: none;
        width: 100%;
        padding-top: 8px;
        border-top: 1px solid var(--border-2);
    }
    .legend-stats .sep { display: none; }

    /* 关于我们 */
    .about-values { grid-template-columns: 1fr; }
    .about-pillars { flex-direction: column; gap: 8px; }
    .about-visual { position: static; }

    /* CTA */
    .cta-box { flex-direction: column; text-align: center; gap: 20px; padding: 36px 24px; }
    .cta-box .cta-text { text-align: center; }
    .cta-title { font-size: 22px; }

    /* 页脚 */
    .footer { padding: 50px 0 24px; }
    .footer-inner { grid-template-columns: 1fr; gap: 32px; }
    .footer-brand { max-width: 100%; }
    .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-bottom-inner { flex-direction: column; text-align: center; gap: 10px; }
    .footer-bottom-links { justify-content: center; flex-wrap: wrap; }

    /* 合作单位:768px 以下 2 列 */
    .partners-grid { grid-template-columns: repeat(2, 1fr); }

    /* 返回顶部 */
    .back-top { right: 16px; bottom: 16px; width: 40px; height: 40px; }
}

/* === 手机(480px 及以下)=== */
@media (max-width: 480px) {
    .container { padding: 0 16px; }

    /* 顶部 */
    .topbar-text { font-size: 11px; letter-spacing: 0; }

    /* Logo 简化:隐藏"智慧中医"徽章 */
    .logo-badge { display: none; }
    .logo-text { font-size: 16px; }

    /* Hero */
    .hero { padding: 30px 0 60px; }
    .hero-title { font-size: 26px; line-height: 1.3; }
    .hero-desc { font-size: 14px; line-height: 1.6; }
    .hero-cta { flex-direction: column; gap: 12px; width: 100%; }
    .hero-cta .btn-primary, .hero-cta .btn-link { width: 100%; justify-content: center; }
    .hero-stats { gap: 12px; }
    .stat-num { font-size: 20px; }
    .stat-label { font-size: 11px; }
    .hero-visual { height: 280px; max-width: 300px; }
    .hero-img-wrap { top: 10px; left: 10px; right: 10px; bottom: 10px; }
    .hero-float { display: none; }

    /* Section */
    .section { padding: 56px 0; }
    .section-title { font-size: 22px; line-height: 1.4; }
    .section-sub { font-size: 13px; }
    .section-head { margin-bottom: 36px; }

    /* 合作单位 */
    .partners { padding: 64px 0; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .partner-card { padding: 16px 8px; }
    .partner-logo { width: 88px; height: 88px; }

    /* 核心功能 */
    .feature-title { font-size: 20px; }
    .feature-list-item { padding: 12px 0; }
    .feature-list-item .list-num { font-size: 13px; }
    .feature-list-item .list-title { font-size: 14px; }
    .feature-list-item .list-desc { font-size: 12px; }

    /* 应用场景卡片 */
    .scene-card { padding: 20px 16px; }
    .scene-icon { width: 40px; height: 40px; }
    .scene-title { font-size: 16px; }
    .scene-desc { font-size: 12px; }

    /* 资质认证 */
    .cert-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .cert-item { padding: 14px 12px; }
    .cert-name { font-size: 12px; }
    .cert-level { font-size: 11px; }

    /* 核心功能配图 */
    .visual-hero { max-width: 260px; }
    .visual-card { padding: 16px 14px; }

    /* 产品描述(差异化长文本)换行优化 */
    .product-desc { font-size: 13px; line-height: 1.5; min-height: 0; }
    .product-img { height: 220px; }
    .product-name { font-size: 20px; }

    /* 部署方案 */
    .solution-card { padding: 24px 20px; }

    /* 产品矩阵(暗色区) */
    .product-card { padding: 24px 20px; }
    .product-title { font-size: 18px; }

    /* 地图 */
    .map-container { height: 400px; }
    #mapChart { min-height: 400px; }
    .map-legend { padding: 6px 10px; gap: 8px; }
    .legend-item { font-size: 11px; }
    .legend-marker { width: 10px; height: 10px; }
    .legend-marker.marker-deploy { width: 8px; height: 8px; }
    .legend-stats { font-size: 11px; gap: 6px; }
    .legend-stats b { font-size: 13px; }

    /* 关于我们 */
    .about-title { font-size: 20px; }
    .about-desc { font-size: 14px; line-height: 1.7; }
    .about-value-card { padding: 20px; }
    .about-info { padding: 20px; }

    /* CTA */
    .cta-title { font-size: 20px; }
    .cta-desc { font-size: 13px; }

    /* 页脚 */
    .footer-links { grid-template-columns: 1fr; gap: 20px; }
    .footer-title { font-size: 14px; }
    .footer-desc { font-size: 13px; }
    .footer-bottom { padding: 18px 0; }
    .footer-bottom-inner { font-size: 12px; gap: 8px; }
    .footer-bottom-links a { font-size: 12px; }

    /* 二维码 */
    .qrcode .qr-img { width: 96px; height: 96px; }

    /* 返回顶部 */
    .back-top { right: 12px; bottom: 12px; width: 36px; height: 36px; }
}

/* === 超小屏(375px 及以下)=== */
@media (max-width: 375px) {
    .hero-title { font-size: 23px; }
    .section-title { font-size: 20px; }
    .hero-visual { height: 240px; max-width: 260px; }
    .hero-img-tags { gap: 4px; }
    .hero-img-tags .tag-chip { font-size: 10px; padding: 3px 8px; }
    .hero-img-badge { font-size: 10px; padding: 4px 8px; }
    .map-container { height: 360px; }
    #mapChart { min-height: 360px; }

    /* 应用场景在超小屏回到单列 */
    .scene-grid { grid-template-columns: 1fr; }

    /* 配图最小化 */
    .visual-hero { max-width: 220px; }
    .visual-card { padding: 14px 12px; }
}

/* === 触摸设备:禁用 hover 3D 倾斜(性能)=== */
@media (hover: none) and (pointer: coarse) {
    .hero-img-wrap { transform: none !important; }
    .btn-primary::before { display: none; }
}

/* === 高分屏适配 === */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-img, .qr-img, .partner-logo img {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* === 打印样式 === */
@media print {
    .header, .topbar, .back-top, .menu-toggle, .cta-section, .map-legend { display: none; }
    .section { padding: 20px 0; }
}