/* ============================================
   GEO AI 搜索优化 - 前端样式
   AI / 高端 / 科技感 / 深空蓝紫渐变
============================================ */

:root {
    --bg-deep: #050816;
    --bg-darker: #0a0e27;
    --bg-card: rgba(15, 23, 42, 0.6);
    --border: rgba(99, 102, 241, 0.2);
    --border-strong: rgba(99, 102, 241, 0.4);
    --primary: #6366f1;
    --primary-light: #818cf8;
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    --pink: #ec4899;
    --text: #e2e8f0;
    --text-dim: #94a3b8;
    --text-soft: #cbd5e1;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
    --gradient-2: linear-gradient(135deg, #ec4899 0%, #6366f1 50%, #06b6d4 100%);
    --gradient-soft: linear-gradient(135deg, rgba(99,102,241,0.15) 0%, rgba(6,182,212,0.15) 100%);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.3);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    background: var(--bg-deep);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s; }
a:hover { color: var(--accent); }

.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* ============ 背景层 ============ */
#particleCanvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}
.grid-bg {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.06) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 1;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.7) 0%, transparent 80%);
}

/* ============ Header ============ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    background: rgba(5, 8, 22, 0.65);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; }

.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; flex-wrap: nowrap; min-width: 0; flex-shrink: 0; }.logo-icon {
    width: 36px; height: 36px;
    display: grid; place-items: center;
    background: var(--gradient-1);
    border-radius: 10px;
    font-weight: 800;
    color: #fff;
    box-shadow: var(--shadow-glow);
}
.logo-text { font-size: 18px; background: var(--gradient-1); -webkit-background-clip: text; background-clip: text; color: transparent; white-space: nowrap; }
.logo-img { height: 40px; width: auto; max-width: 190px; object-fit: contain; display: block; filter: drop-shadow(0 0 8px rgba(99,102,241,.35)); }
.logo-img-footer { height: 38px; }
.logo-city { font-size: 18px; font-weight: 700; color: #2563eb; white-space: nowrap; }
.logo-city-dot { color: #ef4444; margin-right: 1px; }

.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-menu a { color: var(--text-soft); font-size: 14px; font-weight: 500; white-space: nowrap; }
.nav-menu a:hover { color: #fff; }
.nav-menu .nav-cta {
    padding: 8px 18px;
    background: var(--gradient-1);
    border-radius: 8px;
    color: #fff !important;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}
.nav-toggle { display: none; background: none; border: 0; color: #fff; font-size: 24px; cursor: pointer; }
.nav-admin {
    opacity: .55;
    font-size: 13px !important;
    transition: opacity .2s;
}
.nav-admin:hover { opacity: 1; color: #fff !important; }

/* ============ Hero ============ */
.hero {
    position: relative;
    min-height: 100vh;
    padding: 140px 0 80px;
    display: flex;
    align-items: center;
    z-index: 2;
    overflow: hidden; /* 裁剪装饰性渐变层，避免移动端横向溢出 */
}
.hero-bg-gradient {
    position: absolute;
    top: -20%;
    left: 50%;
    width: 1400px;
    height: 1400px;
    transform: translateX(-50%);
    background:
        radial-gradient(circle at 30% 30%, rgba(99, 102, 241, 0.35) 0%, transparent 40%),
        radial-gradient(circle at 70% 60%, rgba(6, 182, 212, 0.25) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(236, 72, 153, 0.18) 0%, transparent 40%);
    filter: blur(60px);
    z-index: -1;
    animation: heroGradient 20s ease-in-out infinite;
}
@keyframes heroGradient {
    0%, 100% { transform: translateX(-50%) rotate(0); }
    50%      { transform: translateX(-50%) rotate(180deg) scale(1.1); }
}

.hero-content { text-align: center; position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid var(--border-strong);
    border-radius: 100px;
    font-size: 13px;
    color: var(--text-soft);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}
.hero-badge .dot {
    width: 8px; height: 8px; background: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 8px #22c55e;
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(36px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}
.gradient-text {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    background-size: 200% 200%;
    animation: gradientMove 6s ease infinite;
}
@keyframes gradientMove {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: clamp(15px, 1.6vw, 18px);
    color: var(--text-dim);
    max-width: 820px;
    margin: 0 auto 40px;
    line-height: 1.8;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 80px;
    flex-wrap: wrap;
}

/* ---- 城市分站 Hero 样式 ---- */
.hero-tag {
    display: inline-block;
    background: rgba(99,102,241,.12);
    border: 1px solid rgba(99,102,241,.35);
    color: #818cf8;
    font-size: 14px;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 20px;
}
.hero-business {
    color: var(--text-dim);
    font-size: clamp(16px, 2.2vw, 22px);
    margin-top: 12px;
    letter-spacing: 2px;
}
.hero-call {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: rgba(255,255,255,.06);
    border: 1px solid var(--border-strong);
    border-radius: 50px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all .3s;
    cursor: pointer;
    backdrop-filter: blur(8px);
    margin-top: 24px;
}
.hero-call:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    background: rgba(99,102,241,.1);
    box-shadow: 0 8px 24px rgba(99,102,241,.25);
}
.hero-call-icon { font-size: 20px; }
.hero-call-name { font-size: 16px; font-weight: 700; }
.hero-call-phone { font-size: 18px; color: #ef4444; font-weight: 800; letter-spacing: 1px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    transition: all .3s;
    cursor: pointer;
    border: 0;
}
.btn-primary {
    background: var(--gradient-1);
    color: #fff;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(99, 102, 241, 0.6); }
.btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border: 1px solid var(--border-strong);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--primary-light); }

/* Platforms */
.platforms { margin-top: 60px; }
.platforms-label {
    color: var(--text-dim);
    font-size: 14px;
    margin-bottom: 24px;
    text-align: center;
    letter-spacing: 0.05em;
}
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.platform-card {
    padding: 24px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    text-align: center;
    transition: all .3s;
    cursor: default;
}
.platform-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-light);
    box-shadow: 0 12px 30px rgba(99, 102, 241, 0.3);
    background: rgba(99, 102, 241, 0.1);
}
.platform-icon {
    width: 50px; height: 50px;
    margin: 0 auto 12px;
    background: var(--gradient-1);
    border-radius: 12px;
    display: grid; place-items: center;
    color: #fff; font-weight: 700; font-size: 14px;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}
.platform-logo {
    width: 50px; height: 50px;
    margin: 0 auto 12px;
    border-radius: 12px;
    overflow: hidden;
    display: grid; place-items: center;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.platform-logo img {
    width: 100%; height: 100%;
    object-fit: contain;
    transition: transform .3s;
}
.platform-card:hover .platform-logo img { transform: scale(1.1); }
.platform-name { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.platform-desc { font-size: 12px; color: var(--text-dim); line-height: 1.5; }

.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-dim);
    font-size: 12px;
    letter-spacing: 0.2em;
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(8px); }
}

/* ============ Section 通用 ============ */
.section { padding: 100px 0; position: relative; z-index: 2; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px; height: 3px;
    background: var(--gradient-1);
    border-radius: 100px;
}
.section-subtitle {
    color: var(--text-dim);
    font-size: 16px;
    margin-top: 24px;
}

/* ============ Advantage ============ */
.advantage { background: linear-gradient(180deg, transparent 0%, rgba(99, 102, 241, 0.03) 100%); }
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.adv-card {
    position: relative;
    padding: 36px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: all .4s;
    overflow: hidden;
}
.adv-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-light);
}
.adv-card:hover .adv-glow { opacity: 1; }
.adv-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.25), transparent 60%);
    opacity: 0;
    transition: opacity .4s;
    pointer-events: none;
}
.adv-num {
    font-size: 32px;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 16px;
}
.adv-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.adv-card p { color: var(--text-dim); font-size: 14px; line-height: 1.7; }

/* ============ Showcase（三列并排 · 垂直滚动展示） ============ */
.showcase-grid-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
    align-items: start;
}
.showcase-col .section-header { margin-bottom: 22px; }
.showcase-col .section-title { font-size: 23px; margin-bottom: 8px; }
.showcase-col .section-subtitle { font-size: 13px; }
.col-marquee {
    overflow: hidden;
    height: 560px;
    padding: 6px 0 10px;
    -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 7%, #000 93%, transparent 100%);
    mask-image: linear-gradient(180deg, transparent 0, #000 7%, #000 93%, transparent 100%);
}
.col-track {
    display: flex;
    flex-direction: column;
    width: 100%;
    animation: marqueeScrollY var(--scroll-dur, 40s) linear infinite;
    will-change: transform;
}
.col-marquee:hover .col-track { animation-play-state: paused; }
@keyframes marqueeScrollY {
    from { transform: translateY(0); }
    to   { transform: translateY(-50%); }
}
.showcase-col .case-card,
.showcase-col .agent-card,
.showcase-col .news-card {
    width: 100%;
    height: 250px;
    margin-right: 0;
    margin-bottom: 20px;
    flex-shrink: 0;
}
.showcase-col .agent-card { overflow: hidden; }
.showcase-col .news-card { height: 230px; }
@media (max-width: 992px) {
    .showcase-grid-inner { grid-template-columns: 1fr; gap: 42px; }
    .col-marquee { height: 500px; }
}

/* ============ Cases ============ */
/* ============ Cases（单行无缝滚动跑马灯） ============ */
.cases-marquee, .agents-marquee {
    overflow: hidden;
    padding: 6px 0 10px;
    -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%);
}
.cases-track, .agents-track {
    display: flex;
    width: max-content;
    animation: marqueeScroll var(--scroll-dur, 40s) linear infinite;
    will-change: transform;
}
.cases-marquee:hover .cases-track,
.agents-marquee:hover .agents-track { animation-play-state: paused; }
@keyframes marqueeScroll {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}
.case-card {
    position: relative;
    width: 380px;
    flex-shrink: 0;
    margin-right: 24px;
    padding: 30px 26px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: border-color .3s, box-shadow .3s;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.case-card:hover {
    border-color: var(--accent-light);
    box-shadow: 0 12px 30px rgba(6, 182, 212, 0.3);
}
.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient-soft);
    color: var(--accent-light);
    font-size: 12px;
    border-radius: 100px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
    align-self: flex-start;
}
.case-card h3 { font-size: 18px; margin-bottom: 12px; }
.case-summary { color: var(--text-soft); font-size: 14px; margin-bottom: 12px; }
.case-detail { color: var(--text-dim); font-size: 13px; line-height: 1.7; margin-bottom: 16px; flex: 1; }
.case-arrow {
    color: var(--accent);
    font-size: 18px;
    font-weight: 700;
    transition: transform .3s;
}
.case-card:hover .case-arrow { transform: translateX(8px); }

/* ============ Agents（单行无缝滚动跑马灯） ============ */
.agents { background: linear-gradient(180deg, rgba(236, 72, 153, 0.03) 0%, transparent 100%); }
.agent-card {
    width: 380px;
    flex-shrink: 0;
    margin-right: 24px;
    padding: 30px 26px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: border-color .3s, box-shadow .3s;
    position: relative;
}
.agent-card:hover {
    border-color: var(--pink);
    box-shadow: 0 12px 30px rgba(236, 72, 153, 0.2);
}
.agent-region {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(236, 72, 153, 0.15);
    color: var(--pink);
    font-size: 12px;
    border-radius: 100px;
    margin-bottom: 16px;
}
.agent-card h3 { font-size: 20px; margin-bottom: 12px; }
.agent-summary { color: var(--accent-light); font-size: 14px; font-weight: 600; margin-bottom: 10px; }
.agent-detail { color: var(--text-dim); font-size: 13px; line-height: 1.7; }
.agents-cta { text-align: center; margin-top: 40px; }
.agents-cta p { color: var(--text-dim); margin-bottom: 20px; font-size: 16px; }

/* ============ News（单行无缝滚动跑马灯） ============ */
.news-marquee {
    overflow: hidden;
    padding: 6px 0 10px;
    -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0, #000 4%, #000 96%, transparent 100%);
}
.news-track {
    display: flex;
    width: max-content;
    animation: marqueeScroll var(--scroll-dur, 40s) linear infinite;
    will-change: transform;
}
.news-marquee:hover .news-track { animation-play-state: paused; }
.news-card {
    width: 380px;
    flex-shrink: 0;
    margin-right: 24px;
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: border-color .3s, box-shadow .3s;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    border-color: var(--primary-light);
    box-shadow: 0 12px 30px rgba(99, 102, 241, 0.2);
}
.news-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 12px;
}
.news-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card p {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
    flex: 1;
}
.news-link { color: var(--accent-light); font-size: 14px; font-weight: 600; }

/* ============ FAQ ============ */
.faq { background: linear-gradient(180deg, transparent 0%, rgba(6, 182, 212, 0.03) 100%); }
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 12px;
    backdrop-filter: blur(10px);
    overflow: hidden;
    transition: border-color .3s;
}
.faq-item[open] { border-color: var(--primary-light); }
.faq-item summary {
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
    user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-q { font-size: 16px; font-weight: 600; flex: 1; }
.faq-toggle {
    width: 28px; height: 28px;
    background: var(--gradient-soft);
    border-radius: 8px;
    display: grid; place-items: center;
    color: var(--primary-light);
    font-size: 18px;
    transition: transform .3s;
}
.faq-item[open] .faq-toggle { transform: rotate(45deg); }
.faq-a {
    padding: 0 24px 20px;
    color: var(--text-dim);
    font-size: 15px;
    line-height: 1.8;
}

/* ============ About ============ */
.about-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-info .section-title { text-align: left; display: block; margin-bottom: 30px; }
.about-info .section-title::after { left: 0; transform: none; }
.about-info p {
    color: var(--text-soft);
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 40px;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.stat {
    text-align: center;
    padding: 20px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    backdrop-filter: blur(10px);
}
.stat-num {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 6px;
}
.stat-label {
    font-size: 12px;
    color: var(--text-dim);
}

.about-visual {
    position: relative;
    height: 400px;
    overflow: hidden; /* 裁剪 orb 装饰圆，避免移动端横向溢出 */
}
.orb {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    background:
        radial-gradient(circle at 30% 30%, #818cf8 0%, transparent 40%),
        radial-gradient(circle at 70% 60%, #06b6d4 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, #ec4899 0%, transparent 40%);
    filter: blur(20px);
    animation: orbRotate 20s linear infinite;
}
.orb::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: radial-gradient(circle, transparent 40%, rgba(99, 102, 241, 0.1) 60%, transparent 80%);
}
@keyframes orbRotate {
    from { transform: translate(-50%, -50%) rotate(0); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ============ Contact ============ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 50px;
}
.contact-card {
    padding: 28px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    text-align: center;
    transition: all .3s;
    cursor: pointer;
}
.contact-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-light);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}
.contact-icon {
    font-size: 32px;
    margin-bottom: 12px;
}
.contact-label {
    color: var(--text-dim);
    font-size: 13px;
    margin-bottom: 8px;
}
.contact-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
}
.contact-value.small { font-size: 13px; }

.qr-wrap {
    display: flex;
    justify-content: center;
}
.qr-card {
    padding: 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    text-align: center;
    box-shadow: var(--shadow-glow);
}
.qr-box {
    width: 200px;
    height: 200px;
    background: #fff;
    border-radius: 12px;
    padding: 12px;
    margin: 0 auto 16px;
    display: grid; place-items: center;
}
.qr-box img { width: 100%; height: 100%; }
.qr-tip {
    color: var(--text-soft);
    font-size: 14px;
    margin-top: 4px;
}
.qr-tip.small {
    font-size: 12px;
    color: var(--text-dim);
}

/* ============ Footer ============ */
.footer {
    background: rgba(5, 8, 22, 0.5);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
    margin-top: 60px;
    position: relative; z-index: 2;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-desc {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.7;
    margin-top: 16px;
    max-width: 320px;
}
.footer h4 {
    font-size: 15px;
    margin-bottom: 16px;
    color: #fff;
}
.footer a, .footer p {
    display: block;
    color: var(--text-dim);
    font-size: 13px;
    margin-bottom: 8px;
    transition: color .25s;
}
.footer a:hover { color: var(--accent-light); }
.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    color: var(--text-dim);
    font-size: 12px;
}
.footer-bottom a.footer-icp {
    color: var(--text-dim);
    text-decoration: none;
    transition: color .25s;
}
.footer-bottom a.footer-icp:hover { color: var(--accent-light); }

/* ============ Floating CTA ============ */
.floating-cta {
    position: fixed;
    right: 24px;
    bottom: 30px;
    z-index: 99;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.float-btn {
    position: relative;
    width: 50px; height: 50px;
    border-radius: 50%;
    background: var(--gradient-1);
    color: #fff;
    border: 0;
    font-size: 22px;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.5);
    transition: transform .3s, box-shadow .3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}
.float-btn:hover { transform: scale(1.1); box-shadow: 0 10px 26px rgba(99, 102, 241, .65); }
.float-btn svg { width: 22px; height: 22px; stroke: currentColor; }
.float-btn .float-label { font-size: 10px; line-height: 1; font-weight: 600; letter-spacing: .3px; }

/* 悬浮按钮统一 tooltip */
.float-btn[title]::after {
    content: attr(title);
    position: absolute;
    right: 58px;
    top: 50%;
    transform: translateY(-50%) scale(.9);
    padding: 5px 10px;
    background: rgba(15, 23, 42, .92);
    color: #fff;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, transform .2s;
    border: 1px solid rgba(129, 140, 248, .35);
    box-shadow: 0 4px 12px rgba(0, 0, 0, .3);
}
.float-btn[title]:hover::after { opacity: 1; transform: translateY(-50%) scale(1); }

/* 在线留言按钮（已集成到 floating-cta 容器，避免与电话/微信按钮重合） */
.float-btn-inquiry {
    background: linear-gradient(135deg, rgba(99, 102, 241, .92), rgba(6, 182, 212, .92));
    border: 1px solid rgba(129, 140, 248, .6);
    box-shadow: 0 0 20px rgba(99, 102, 241, .55), 0 8px 24px rgba(0, 0, 0, .35);
    flex-direction: column;
    gap: 1px;
    animation: floatPulse 2.6s ease-in-out infinite;
}
.float-btn-inquiry:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 0 34px rgba(34, 211, 238, .7), 0 12px 30px rgba(0, 0, 0, .4);
}

.qr-modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
}
.qr-modal.show { display: flex; animation: fadeIn .25s; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.qr-modal-inner {
    position: relative;
    padding: 30px;
    background: var(--bg-darker);
    border: 1px solid var(--border-strong);
    border-radius: 16px;
    text-align: center;
    max-width: 280px;
}
.qr-modal-inner img { width: 200px; height: 200px; background: #fff; padding: 12px; border-radius: 12px; }
.qr-modal-inner p { color: var(--text-soft); margin-top: 12px; }
.qr-modal-inner .small { font-size: 12px; color: var(--text-dim); }
.qr-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: 0;
    color: #fff;
    font-size: 32px;
    cursor: pointer;
}

/* -------- 电话咨询弹窗 -------- */
.phone-modal-inner { padding: 36px 30px 30px; }
.phone-big-icon {
    font-size: 42px;
    line-height: 1;
    margin-bottom: 14px;
    animation: phoneShake 2.4s ease-in-out infinite;
}
@keyframes phoneShake {
    0%, 60%, 100% { transform: rotate(0); }
    65% { transform: rotate(-14deg); }
    70% { transform: rotate(10deg); }
    75% { transform: rotate(-8deg); }
    80% { transform: rotate(6deg); }
    85% { transform: rotate(0); }
}
.phone-number {
    display: block;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 1px;
    color: #fff;
    text-decoration: none;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    padding: 4px 0;
}
.phone-call-btn {
    display: inline-block;
    margin-top: 18px;
    padding: 11px 34px;
    border-radius: 999px;
    background: var(--gradient-1);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 8px 22px rgba(99, 102, 241, .45);
    transition: transform .2s, box-shadow .2s;
}
.phone-call-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(99, 102, 241, .6);
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
    .platforms-grid { grid-template-columns: repeat(4, 1fr); }
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .about-wrap { grid-template-columns: 1fr; }
    .about-visual { height: 300px; }

    /* 中等宽度桌面端：防止导航菜单项与 logo 文字被压成单字换行 */
    .nav { gap: 14px; }
    .nav-menu { gap: 16px; flex-wrap: wrap; justify-content: flex-end; }
    .nav-menu a { font-size: 13px; }
    .logo-text { font-size: 16px; max-width: 170px; overflow: hidden; text-overflow: ellipsis; }
    .logo-city { font-size: 16px; }
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .logo { gap: 8px; }
    .logo-img { max-width: 120px; height: 32px; }
    .logo-img-footer { height: 32px; }
    .logo-text { font-size: 15px; }
    .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--bg-darker); padding: 20px; gap: 16px; }
    .nav-menu.open { display: flex; }
    .nav-toggle { display: block; }
    .platforms-grid { grid-template-columns: repeat(2, 1fr); }
    .advantage-grid { grid-template-columns: 1fr; }
    /* 案例跑马灯：移动端卡片收窄 */
    .case-card, .agent-card, .news-card { width: 290px; margin-right: 16px; padding: 22px 20px; }
    .case-card h3 { font-size: 16px; }
    .agent-card h3 { font-size: 17px; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }
    .hero { padding-top: 120px; }
    .section { padding: 70px 0; }
}

/* ==================== 文章详情页（AI 高端科技风） ==================== */
.article-page {
    position: relative;
    z-index: 2;
    padding: 140px 0 80px;
    min-height: 70vh;
}
.article-wrap { max-width: 900px; }

/* ---- 阅读进度条 ---- */
.article-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: 0;
    background: var(--gradient-1);
    box-shadow: 0 0 14px rgba(99, 102, 241, 0.7);
    z-index: 999;
    border-radius: 0 3px 3px 0;
}

/* ---- 玻璃拟态主容器 ---- */
.article-card {
    position: relative;
    background: linear-gradient(165deg, rgba(17, 25, 49, 0.78) 0%, rgba(8, 12, 32, 0.92) 100%);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border: 1px solid rgba(99, 102, 241, 0.24);
    border-radius: 24px;
    padding: 52px 56px;
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    overflow: hidden;
}
/* 顶部流光线条 */
.article-card::before {
    content: '';
    position: absolute;
    top: 0; left: 8%; right: 8%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #818cf8 30%, #22d3ee 60%, #ec4899 85%, transparent);
    border-radius: 2px;
}
/* 角落光晕装饰 */
.article-glow {
    position: absolute;
    top: -150px; right: -150px;
    width: 380px; height: 380px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.22), transparent 65%);
    pointer-events: none;
}
.article-glow::after {
    content: '';
    position: absolute;
    left: -220px; top: 170px;
    width: 340px; height: 340px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.14), transparent 65%);
    pointer-events: none;
}

/* ---- 面包屑 ---- */
.article-breadcrumb {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    color: var(--text-dim);
    font-size: 13px;
    margin-bottom: 22px;
}
.article-breadcrumb a {
    color: var(--text-dim);
    text-decoration: none;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.18);
    transition: all .3s ease;
}
.article-breadcrumb a:hover {
    color: #fff;
    border-color: var(--primary-light);
    background: rgba(99, 102, 241, 0.2);
}
.article-breadcrumb .crumb-sep { color: var(--primary-light); opacity: .6; }
.article-breadcrumb .crumb-now { color: var(--text-soft); }

/* ---- 标题 ---- */
.article-title {
    position: relative;
    font-size: clamp(24px, 3.4vw, 40px);
    line-height: 1.35;
    font-weight: 800;
    background: linear-gradient(120deg, #fff 20%, #c7d2fe 55%, #67e8f9 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
    text-shadow: 0 8px 40px rgba(99, 102, 241, 0.15);
}

/* ---- 元信息徽章 ---- */
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-bottom: 26px;
    border-bottom: 1px solid rgba(99, 102, 241, 0.16);
    margin-bottom: 30px;
}
.meta-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 15px;
    border-radius: 999px;
    font-size: 12.5px;
    color: var(--text-soft);
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.25);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.meta-tag {
    color: #67e8f9;
    border-color: rgba(34, 211, 238, 0.35);
    background: rgba(6, 182, 212, 0.12);
}

/* ---- 封面图（渐变描边） ---- */
.article-cover {
    position: relative;
    border-radius: 18px;
    padding: 3px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.65), rgba(6, 182, 212, 0.5) 50%, rgba(236, 72, 153, 0.4));
    margin: 0 0 34px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.4);
}
.article-cover img {
    width: 100%;
    max-height: 440px;
    object-fit: cover;
    display: block;
    border-radius: 15px;
}

/* ---- 正文 ---- */
.article-content {
    position: relative;
    font-size: 16px;
    line-height: 2;
    color: #dbe2f0;
}
.article-content p { margin-bottom: 20px; }
.article-content strong { color: #fff; }
.article-content h2 {
    font-size: 23px;
    line-height: 1.5;
    margin: 40px 0 18px;
    padding: 12px 16px;
    color: #fff;
    border-left: 3px solid;
    border-image: linear-gradient(180deg, #818cf8, #22d3ee) 1;
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.16), transparent 80%);
    border-radius: 0 10px 10px 0;
}
.article-content h3 {
    font-size: 18px;
    color: #fff;
    margin: 32px 0 14px;
    line-height: 1.5;
}
.article-content ul, .article-content ol { margin: 0 0 20px 24px; }
.article-content li { margin-bottom: 10px; }
.article-content li::marker { color: var(--accent); }
.article-content blockquote {
    position: relative;
    margin: 0 0 24px;
    padding: 18px 24px 18px 28px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.14), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    color: var(--text-soft);
}
.article-content blockquote::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--gradient-1);
    border-radius: 3px 0 0 3px;
}
.article-content img {
    max-width: 100%;
    border-radius: 12px;
    margin: 14px 0;
    border: 1px solid rgba(99, 102, 241, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}
.article-content a {
    color: var(--accent-light);
    border-bottom: 1px dashed rgba(34, 211, 238, 0.5);
}
.article-content code {
    background: rgba(255, 255, 255, 0.08);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--accent-light);
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.article-empty { color: var(--text-dim); }

/* ---- 上一篇 / 下一篇（玻璃卡片 + 悬浮光效） ---- */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 44px 0 22px;
}
.article-nav a {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 20px 22px;
    border-radius: 16px;
    overflow: hidden;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(99, 102, 241, 0.18);
    transition: all .35s ease;
}
.article-nav a::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity .35s;
    background: radial-gradient(140px 60px at 50% 0%, rgba(99, 102, 241, 0.25), transparent 70%);
    pointer-events: none;
}
.article-nav a:hover {
    border-color: rgba(99, 102, 241, 0.6);
    transform: translateY(-3px);
    box-shadow: 0 16px 44px rgba(0, 0, 0, 0.4), 0 0 24px rgba(99, 102, 241, 0.15);
}
.article-nav a:hover::before { opacity: 1; }
.article-nav-prev { text-align: left; }
.article-nav-next { text-align: right; align-items: flex-end; }
.article-nav .nav-label { font-size: 12px; color: var(--text-dim); letter-spacing: .5px; }
.article-nav .nav-title {
    font-size: 14.5px;
    color: #fff;
    font-weight: 500;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-back { text-align: center; margin-top: 10px; }

/* ---- 文章不存在（404） ---- */
.article-notfound { position: relative; text-align: center; padding: 50px 0; }
.notfound-code {
    display: block;
    font-size: 96px;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, #818cf8, #22d3ee 60%, #ec4899);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 10px 30px rgba(99, 102, 241, 0.35));
    margin-bottom: 16px;
}
.article-notfound h1 { font-size: 24px; color: #fff; margin-bottom: 12px; }
.article-notfound p { color: var(--text-dim); margin-bottom: 30px; }

@media (max-width: 768px) {
    .article-card { padding: 34px 24px; border-radius: 18px; }
    .article-nav { grid-template-columns: 1fr; }
    .article-page { padding-top: 112px; }
}

/* ==================== 在线留言弹窗（右侧大弹窗 · 赛博科技风） ==================== */
.inquiry-float-btn {
    position: fixed; right: 20px; bottom: 24px; z-index: 98;
    display: flex; align-items: center; gap: 8px;
    padding: 12px 18px;
    background: linear-gradient(135deg, rgba(99,102,241,.92), rgba(6,182,212,.92));
    color: #fff; border-radius: 50px; font-size: 14px; font-weight: 700;
    letter-spacing: .5px;
    border: 1px solid rgba(129,140,248,.6);
    box-shadow: 0 0 20px rgba(99,102,241,.55), 0 8px 24px rgba(0,0,0,.35);
    cursor: pointer;
    transition: all .3s ease; animation: floatPulse 2.6s ease-in-out infinite;
}
.inquiry-float-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 34px rgba(34,211,238,.7), 0 12px 30px rgba(0,0,0,.4);
}
@keyframes floatPulse {
    0%,100% { box-shadow: 0 0 16px rgba(99,102,241,.45), 0 8px 24px rgba(0,0,0,.35); }
    50%     { box-shadow: 0 0 32px rgba(34,211,238,.75), 0 8px 24px rgba(0,0,0,.35); }
}

.inquiry-float-modal {
    position: fixed; right: 28px; top: 50%; z-index: 99;
    width: 410px; max-width: calc(100vw - 40px);
    max-height: 0; overflow: hidden; opacity: 0;
    transform: translateY(-46%) scale(.92);
    transition: all .45s cubic-bezier(.25,.8,.25,1); pointer-events: none;
}
.inquiry-float-modal.open {
    max-height: 94vh; opacity: 1; transform: translateY(-50%) scale(1); pointer-events: auto;
}
.inquiry-float-box {
    position: relative;
    background:
        radial-gradient(420px 200px at 85% -10%, rgba(99,102,241,.24), transparent 65%),
        radial-gradient(320px 180px at -10% 110%, rgba(6,182,212,.18), transparent 60%),
        radial-gradient(260px 150px at 50% 110%, rgba(236,72,153,.1), transparent 70%),
        linear-gradient(160deg, rgba(15,23,42,.94) 0%, rgba(7,11,31,.97) 100%);
    border: 1px solid rgba(129,140,248,.38);
    border-radius: 18px;
    box-shadow:
        0 0 0 1px rgba(6,182,212,.08),
        0 0 48px rgba(99,102,241,.3),
        0 24px 70px rgba(0,0,0,.55),
        inset 0 1px 0 rgba(255,255,255,.08);
    overflow: hidden;
    display: flex; flex-direction: column;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
/* 网格底纹（中心淡出） */
.inquiry-float-box::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(99,102,241,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,.08) 1px, transparent 1px);
    background-size: 26px 26px;
    -webkit-mask-image: radial-gradient(560px 320px at 50% 28%, rgba(0,0,0,.9), transparent 78%);
    mask-image: radial-gradient(560px 320px at 50% 28%, rgba(0,0,0,.9), transparent 78%);
}
/* 顶部霓虹扫描光带 */
.inquiry-float-box::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; z-index: 3;
    background: linear-gradient(90deg, transparent, rgba(236,72,153,.95), rgba(99,102,241,.95), rgba(6,182,212,.95), transparent);
    background-size: 220% 100%;
    animation: scanMove 3.4s linear infinite;
    pointer-events: none;
}
@keyframes scanMove { 0% { background-position: -220% 0; } 100% { background-position: 220% 0; } }

.inquiry-close {
    position: absolute; top: 12px; right: 14px; z-index: 2;
    background: rgba(255,255,255,.07); border: 1px solid rgba(129,140,248,.35);
    color: rgba(226,232,240,.9);
    width: 32px; height: 32px; border-radius: 50%; font-size: 20px;
    cursor: pointer; line-height: 1; transition: all .2s;
    display: flex; align-items: center; justify-content: center;
}
.inquiry-close:hover { background: rgba(99,102,241,.35); color: #fff; transform: rotate(90deg); box-shadow: 0 0 14px rgba(99,102,241,.6); }
.inquiry-float-body { position: relative; z-index: 1; padding: 30px 26px 24px; color: var(--text); overflow-y: auto; max-height: 90vh; }

.inquiry-badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 5px 12px; margin-bottom: 12px;
    background: linear-gradient(135deg, rgba(236,72,153,.2), rgba(99,102,241,.14));
    border: 1px solid rgba(236,72,153,.5);
    border-radius: 999px; color: #f9a8d4;
    font-size: 12px; font-weight: 600; letter-spacing: 1px;
    box-shadow: 0 0 14px rgba(236,72,153,.18), inset 0 0 8px rgba(236,72,153,.1);
}
.inquiry-badge::before {
    content: ''; width: 6px; height: 6px; border-radius: 50%;
    background: #22d3ee; box-shadow: 0 0 8px #22d3ee;
    animation: blinkDot 1.6s ease-in-out infinite;
}
.inquiry-popup-title {
    margin: 0 0 8px; font-size: 26px; font-weight: 900; line-height: 1.35; letter-spacing: 1px;
    background: linear-gradient(120deg, #ec4899 0%, #818cf8 45%, #22d3ee 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: #818cf8;
    text-shadow: 0 0 30px rgba(129,140,248,.25);
}
.inquiry-popup-sub { margin: 0 0 14px; font-size: 13.5px; line-height: 1.75; color: var(--text-dim); }
.inquiry-city-line {
    display: flex; align-items: center; flex-wrap: wrap; gap: 4px;
    font-size: 12.5px; color: var(--accent-light);
    background: rgba(6,182,212,.09); border: 1px solid rgba(6,182,212,.3);
    border-radius: 10px; padding: 7px 12px; margin-bottom: 14px;
    box-shadow: inset 0 0 12px rgba(6,182,212,.06);
}
.inquiry-city-line .dot { color: #4ade80; animation: blinkDot 1.6s ease-in-out infinite; }
@keyframes blinkDot { 0%,100%{opacity:.35} 50%{opacity:1} }

.inquiry-input, .inquiry-textarea {
    width: 100%; padding: 13px 15px; margin-bottom: 11px;
    border: 1px solid rgba(99,102,241,.32); border-radius: 11px; font-size: 14px;
    background: rgba(99,102,241,.08); color: var(--text); outline: none;
    transition: all .25s; font-family: inherit;
}
.inquiry-input::placeholder, .inquiry-textarea::placeholder { color: rgba(148,163,184,.55); }
.inquiry-input:focus, .inquiry-textarea:focus {
    border-color: var(--accent-light);
    background: rgba(6,182,212,.08);
    box-shadow: 0 0 0 3px rgba(6,182,212,.16), 0 0 18px rgba(6,182,212,.2);
}
.inquiry-textarea { resize: vertical; min-height: 74px; }
.inquiry-submit {
    width: 100%; padding: 14px; margin-top: 3px; border: none; border-radius: 11px;
    background: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
    color: #fff;
    font-size: 16px; font-weight: 800; letter-spacing: 3px; cursor: pointer;
    box-shadow: 0 8px 24px rgba(99,102,241,.45), 0 0 18px rgba(6,182,212,.25);
    transition: all .3s;
}
.inquiry-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(99,102,241,.6), 0 0 30px rgba(34,211,238,.45);
}
.inquiry-submit:active { transform: translateY(0); }
.inquiry-result { margin-top: 8px; font-size: 13px; text-align: center; min-height: 20px; }
.inquiry-result.ok  { color: #4ade80; text-shadow: 0 0 10px rgba(74,222,128,.4); }
.inquiry-result.err { color: #fb7185; text-shadow: 0 0 10px rgba(251,113,133,.4); }

.inquiry-hotline {
    margin-top: 14px; padding-top: 14px;
    border-top: 1px dashed rgba(129,140,248,.35);
    display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 8px;
}
.hotline-label { font-size: 13px; color: var(--text-dim); }
.hotline-num {
    font-size: 21px; font-weight: 900; letter-spacing: 1px;
    background: linear-gradient(120deg, #22d3ee, #818cf8);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: #22d3ee;
    text-decoration: none; transition: opacity .2s;
}
.hotline-num:hover { opacity: .82; }
.inquiry-privacy { margin-top: 10px; font-size: 11.5px; line-height: 1.6; color: rgba(148,163,184,.55); text-align: center; }

@media (max-width: 768px) {
    .floating-cta { right: 12px; bottom: 16px; gap: 10px; }
    .float-btn { width: 44px; height: 44px; font-size: 19px; }
    .float-btn svg { width: 19px; height: 19px; }
    .float-btn .float-label { font-size: 9px; }
    .float-btn[title]::after { display: none; }
    .inquiry-float-btn { right: 12px; bottom: 16px; padding: 9px 13px; font-size: 13px; }
    .inquiry-float-btn svg { width: 18px; height: 18px; }
    .inquiry-float-modal { right: 12px; left: 12px; top: 50%; width: auto; }
    .inquiry-float-body { padding: 24px 18px 18px; }
    .inquiry-popup-title { font-size: 22px; }
    .hotline-num { font-size: 19px; }
}

/* ============ 城市分站 - 前端切换组件 ============ */

/* 导航栏城市下拉选择器 */
.city-switch {
    display: flex; align-items: center; gap: 4px;
    padding: 5px 10px;
    background: rgba(99, 102, 241, .08);
    border: 1px solid rgba(99, 102, 241, .3);
    border-radius: 8px;
    transition: all .25s;
}
.city-switch:hover { border-color: rgba(99, 102, 241, .6); background: rgba(99, 102, 241, .14); }
.city-switch-icon { font-size: 13px; }
.city-switch select {
    appearance: none; -webkit-appearance: none;
    background: transparent; border: none; outline: none;
    color: #fff; font-size: 13px; font-weight: 600;
    cursor: pointer; padding-right: 14px;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' stroke='%23818cf8' stroke-width='1.6' fill='none' stroke-linecap='round'/></svg>");
    background-repeat: no-repeat; background-position: right center;
}
.city-switch select option { color: #111; background: #fff; }

/* Hero 区城市快捷切换条 */
.city-pills {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
    gap: 8px; margin: 22px auto 0; max-width: 900px;
}
.city-pills-label {
    font-size: 13px; color: rgba(255,255,255,.55); letter-spacing: 2px;
    margin-right: 4px;
}
.city-pill {
    padding: 5px 14px; border-radius: 999px;
    font-size: 13px; color: rgba(255,255,255,.78);
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.14);
    backdrop-filter: blur(6px);
    transition: all .25s;
}
.city-pill:hover {
    color: #fff; border-color: rgba(129,140,248,.7);
    background: rgba(99,102,241,.18);
    transform: translateY(-2px);
}
.city-pill.active {
    color: #fff; font-weight: 700;
    background: linear-gradient(135deg, #6366f1, #06b6d4);
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(99,102,241,.4);
}

/* 页脚全国分站 - 省份收纳 · 点击展开（深度精简） */
.footer-cities {
    margin-top: 32px; padding-top: 26px;
    border-top: 1px solid rgba(99,102,241,.15);
}
.footer-cities-head {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 10px; margin-bottom: 16px;
}
.footer-cities-title {
    font-size: 16px; font-weight: 900; letter-spacing: 3px;
    background: linear-gradient(120deg, #ec4899 0%, #818cf8 50%, #22d3ee 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 24px rgba(129,140,248,.2);
}
.footer-expand-all {
    padding: 5px 14px; font-size: 12px; letter-spacing: 1px;
    color: var(--accent-light); background: rgba(6,182,212,.08);
    border: 1px solid rgba(6,182,212,.35); border-radius: 999px;
    cursor: pointer; transition: all .2s; font-family: inherit;
}
.footer-expand-all:hover {
    color: #fff; background: rgba(6,182,212,.22);
    box-shadow: 0 0 14px rgba(6,182,212,.35);
}
.footer-expand-all.expanded { background: rgba(99,102,241,.25); border-color: rgba(129,140,248,.5); color: #fff; }

/* 省份标签栏 */
.footer-province-bar {
    display: flex; flex-wrap: wrap; gap: 8px;
}
.footer-province-chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 14px; border-radius: 9px;
    background: rgba(15,23,42,.55);
    border: 1px solid rgba(99,102,241,.22);
    color: rgba(226,232,240,.75); font-size: 13px; font-weight: 600;
    cursor: pointer; transition: all .22s; font-family: inherit; letter-spacing: .5px;
}
.footer-province-chip:hover {
    color: #fff; border-color: rgba(129,140,248,.55);
    box-shadow: 0 0 14px rgba(99,102,241,.3);
}
.footer-province-chip.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(99,102,241,.3), rgba(6,182,212,.2));
    border-color: rgba(129,140,248,.65);
    box-shadow: 0 0 18px rgba(99,102,241,.35);
}
.footer-province-chip .chip-count {
    font-size: 11px; font-weight: 600; color: var(--accent-light);
    background: rgba(6,182,212,.12); border: 1px solid rgba(6,182,212,.28);
    padding: 1px 7px; border-radius: 999px; line-height: 1.5;
}
.footer-province-chip.active .chip-count { color: #fff; background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.3); }

/* 城市收纳容器（默认收起） */
.footer-prov-cities {
    max-height: 0; overflow: hidden; opacity: 0;
    margin-top: 0;
    transition: max-height .45s cubic-bezier(.25,.8,.25,1), opacity .3s, margin .3s;
    background: rgba(15,23,42,.5);
    border: 1px solid transparent; border-radius: 13px;
}
.footer-prov-cities.open {
    max-height: 560px; opacity: 1; margin-top: 12px;
    border-color: rgba(99,102,241,.28);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.05), 0 0 22px rgba(99,102,241,.1);
}
.footer-prov-head {
    display: flex; align-items: center; gap: 8px;
    padding: 13px 18px 0;
}
.footer-province-line {
    width: 3px; height: 16px; border-radius: 2px;
    background: linear-gradient(180deg, #ec4899, #6366f1);
    box-shadow: 0 0 10px rgba(236,72,153,.55);
}
.footer-province-name {
    font-size: 13.5px; font-weight: 800; color: #fff; letter-spacing: 1.5px;
}
.footer-province-count {
    font-size: 11px; font-weight: 500;
    color: var(--text-dim);
    background: rgba(99,102,241,.12);
    padding: 2px 9px; border-radius: 999px;
    border: 1px solid rgba(99,102,241,.22);
}
.footer-city-pills {
    display: flex; flex-wrap: wrap; gap: 7px;
    padding: 12px 18px 15px;
}
.footer-city-pills a {
    font-size: 12.5px; color: rgba(226,232,240,.6);
    padding: 4px 11px; border-radius: 7px;
    background: rgba(99,102,241,.08);
    border: 1px solid rgba(99,102,241,.14);
    transition: all .2s;
}
.footer-city-pills a:hover {
    color: #fff;
    background: rgba(99,102,241,.26);
    border-color: rgba(99,102,241,.5);
    box-shadow: 0 0 14px rgba(99,102,241,.28);
}

@media (max-width: 768px) {
    .city-switch { padding: 4px 8px; }
    .city-switch select { font-size: 12px; }
    .city-pills { gap: 6px; margin-top: 16px; }
    .city-pill { padding: 4px 10px; font-size: 12px; }
    .footer-province-bar { gap: 7px; }
    .footer-province-chip { padding: 6px 12px; font-size: 12.5px; }
    .footer-prov-cities.open { max-height: 640px; }
    .footer-city-pills { padding: 10px 14px 13px; }
    .footer-city-pills a { font-size: 11.5px; padding: 3px 9px; }
}


/* ============ 城市站专属内容区（GEO 地区化内容） ============ */
.city-content { padding: 72px 0; }
.city-intro {
    max-width: 860px; margin: 0 auto 40px; text-align: center;
    background: linear-gradient(135deg, rgba(99,102,241,.06), rgba(6,182,212,.05));
    border: 1px solid rgba(99,102,241,.18);
    border-radius: 16px; padding: 28px 32px;
}
.city-intro-lead { font-size: 17px; font-weight: 600; color: #c7d2fe; line-height: 1.9; margin-bottom: 10px; }
.city-intro-body { font-size: 14.5px; color: rgba(226,232,240,.72); line-height: 1.95; }
.city-svc-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px; margin: 36px 0 44px;
}
.city-svc-card {
    position: relative; padding: 24px 22px 22px; overflow: hidden;
    background: linear-gradient(160deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
    border: 1px solid rgba(148,163,184,.16); border-radius: 14px;
    transition: all .3s;
}
.city-svc-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99,102,241,.45);
    box-shadow: 0 12px 32px rgba(99,102,241,.14);
}
.city-svc-num {
    position: absolute; top: 10px; right: 16px;
    font-size: 42px; font-weight: 800; line-height: 1;
    color: rgba(99,102,241,.16); font-family: 'Courier New', monospace;
}
.city-svc-card h3 { font-size: 16.5px; font-weight: 700; color: #e2e8f0; margin-bottom: 8px; }
.city-svc-card p { font-size: 13.5px; color: rgba(226,232,240,.66); line-height: 1.8; }
.city-block-title {
    font-size: 20px; font-weight: 700; color: #e2e8f0;
    margin: 0 0 20px; padding-left: 14px; position: relative;
}
.city-block-title::before {
    content: ''; position: absolute; left: 0; top: 4px; bottom: 4px;
    width: 4px; border-radius: 4px;
    background: linear-gradient(180deg, #6366f1, #06b6d4);
}
.city-case-block, .city-faq-block, .city-neighbor-block, .city-article-block { margin-bottom: 44px; }

/* 城市 AI 独家深度长文 */
.city-article-block {
    padding: 30px 32px; border-radius: 16px;
    background: linear-gradient(160deg, rgba(99,102,241,.06), rgba(6,182,212,.03));
    border: 1px solid rgba(99,102,241,.2);
}
.city-article-body h3 {
    font-size: 19px; margin: 26px 0 12px; color: #e2e8f0;
    padding-left: 12px; position: relative;
}
.city-article-body h3::before {
    content: ''; position: absolute; left: 0; top: 5px; bottom: 5px;
    width: 3px; border-radius: 3px;
    background: linear-gradient(180deg, #22d3ee, #6366f1);
}
.city-article-body h4 { font-size: 16.5px; margin: 20px 0 10px; color: #cbd5e1; }
.city-article-body p { margin: 0 0 14px; line-height: 1.95; color: #a9b4c6; font-size: 15px; }
.city-article-body ul, .city-article-body ol { margin: 0 0 16px; padding-left: 22px; }
.city-article-body li { margin-bottom: 8px; line-height: 1.85; color: #a9b4c6; font-size: 15px; }
.city-article-body strong { color: #7dd3fc; font-weight: 600; }
.city-article-meta {
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
    margin-top: 24px; padding-top: 18px;
    border-top: 1px dashed rgba(148,163,184,.25);
    font-size: 13px; color: #64748b;
}
.city-article-cta {
    padding: 8px 18px; border-radius: 20px; font-size: 13.5px; text-decoration: none;
    background: linear-gradient(135deg, #6366f1, #06b6d4); color: #fff;
    transition: transform .25s, box-shadow .25s;
}
.city-article-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(99,102,241,.35); color: #fff; }
@media (max-width: 768px) {
    .city-article-block { padding: 20px 18px; }
    .city-article-body p, .city-article-body li { font-size: 14.5px; }
}
.city-case-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.city-case-card {
    padding: 22px; border-radius: 14px;
    background: linear-gradient(160deg, rgba(255,255,255,.04), rgba(255,255,255,.01));
    border: 1px solid rgba(148,163,184,.16);
    transition: all .3s;
}
.city-case-card:hover { border-color: rgba(6,182,212,.4); transform: translateY(-3px); }
.city-case-tag {
    display: inline-block; font-size: 11px; font-weight: 700;
    padding: 3px 10px; border-radius: 999px; margin-bottom: 12px;
    color: #67e8f9; background: rgba(6,182,212,.1); border: 1px solid rgba(6,182,212,.3);
}
.city-case-card h4 { font-size: 15.5px; font-weight: 700; color: #e2e8f0; margin-bottom: 10px; }
.city-case-summary { font-size: 13.5px; color: rgba(226,232,240,.72); line-height: 1.8; margin-bottom: 8px; }
.city-case-detail { font-size: 13px; color: rgba(226,232,240,.55); line-height: 1.8; }
.city-faq-list { display: flex; flex-direction: column; gap: 12px; }
.city-faq-item {
    border: 1px solid rgba(148,163,184,.16); border-radius: 12px;
    background: rgba(255,255,255,.02); overflow: hidden;
    transition: all .3s;
}
.city-faq-item[open] { border-color: rgba(99,102,241,.4); background: rgba(99,102,241,.04); }
.city-faq-item summary {
    display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 16px 20px; cursor: pointer; list-style: none;
}
.city-faq-item summary::-webkit-details-marker { display: none; }
.city-faq-q { font-size: 14.5px; font-weight: 600; color: #e2e8f0; }
.city-faq-toggle {
    flex: none; width: 26px; height: 26px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; color: #a5b4fc;
    background: rgba(99,102,241,.12); border: 1px solid rgba(99,102,241,.3);
    transition: transform .25s;
}
.city-faq-item[open] .city-faq-toggle { transform: rotate(45deg); }
.city-faq-a { padding: 0 20px 18px; font-size: 13.5px; color: rgba(226,232,240,.66); line-height: 1.9; }
.city-neighbor-links {
    display: flex; flex-wrap: wrap; gap: 8px;
    padding: 18px 20px; border-radius: 12px;
    background: rgba(255,255,255,.02); border: 1px dashed rgba(148,163,184,.22);
}
.city-neighbor-links a {
    font-size: 13px; color: rgba(226,232,240,.7);
    padding: 5px 14px; border-radius: 999px;
    background: rgba(99,102,241,.08); border: 1px solid rgba(99,102,241,.22);
    transition: all .25s;
}
.city-neighbor-links a:hover { color: #fff; background: rgba(99,102,241,.2); border-color: rgba(99,102,241,.5); transform: translateY(-2px); }
.city-content-cta { text-align: center; margin-top: 8px; }
@media (max-width: 768px) {
    .city-content { padding: 48px 0; }
    .city-intro { padding: 20px; }
    .city-svc-grid, .city-case-grid { grid-template-columns: 1fr; }
}

/* ============ 文章页城市站相关内容块 ============ */
.article-city-box {
    margin: 36px 0 8px; padding: 26px 28px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(99,102,241,.07), rgba(6,182,212,.05));
    border: 1px solid rgba(99,102,241,.22);
}
.article-city-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.article-city-badge {
    flex: none; font-size: 12px; font-weight: 700;
    padding: 4px 12px; border-radius: 999px;
    color: #67e8f9; background: rgba(6,182,212,.12); border: 1px solid rgba(6,182,212,.35);
}
.article-city-head h3 { font-size: 18px; font-weight: 700; color: #e2e8f0; margin: 0; }
.article-city-lead { font-size: 14.5px; font-weight: 600; color: #c7d2fe; line-height: 1.85; margin-bottom: 8px; }
.article-city-body { font-size: 13.5px; color: rgba(226,232,240,.68); line-height: 1.9; margin-bottom: 12px; }
.article-city-svc { list-style: none; padding: 0; margin: 0 0 16px; }
.article-city-svc li {
    position: relative; padding-left: 16px; margin-bottom: 6px;
    font-size: 13px; color: rgba(226,232,240,.66); line-height: 1.75;
}
.article-city-svc li::before {
    content: ''; position: absolute; left: 0; top: 9px;
    width: 6px; height: 6px; border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #06b6d4);
}
.article-city-svc b { color: #a5b4fc; font-weight: 600; }
.article-city-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.article-city-cta a {
    font-size: 13.5px; font-weight: 600; color: #e2e8f0;
    padding: 8px 18px; border-radius: 8px;
    background: rgba(99,102,241,.14); border: 1px solid rgba(99,102,241,.35);
    transition: all .25s;
}
.article-city-cta a:hover { background: rgba(99,102,241,.28); transform: translateY(-2px); }
@media (max-width: 768px) {
    .article-city-box { padding: 20px 18px; }
}

/* ============================================================
   AI 可信度诊断 / 诊断报告 / 企业知识库（2026-09-01 新增）
============================================================ */
.diag-hero { padding: 130px 0 30px; text-align: center; position: relative; z-index: 1; }
.diag-hero-title { font-size: 44px; margin: 18px 0 14px; letter-spacing: 1px; }
.diag-hero-sub { color: var(--text-dim); font-size: 16px; line-height: 1.9; }
.diag-main { position: relative; z-index: 1; padding-top: 20px; }

.diag-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 22px;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-card);
}

.diag-steps { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }
.diag-step {
    font-size: 13px; color: var(--text-dim);
    padding: 6px 14px; border-radius: 20px;
    background: rgba(99,102,241,.08); border: 1px solid var(--border);
}
.diag-step.active { color: #fff; background: var(--gradient-1); border-color: transparent; }
.diag-step-arrow { color: var(--text-dim); }

.diag-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.diag-field { display: flex; flex-direction: column; gap: 8px; }
.diag-field > span { font-size: 13.5px; color: var(--text-soft); }
.diag-field > span em { color: #f87171; font-style: normal; }
.diag-field input, .diag-field select {
    background: rgba(2, 6, 23, .6);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 12px 14px; border-radius: 10px; font-size: 14px;
    outline: none; transition: border .25s;
}
.diag-field input:focus, .diag-field select:focus { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(99,102,241,.15); }
.diag-form-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 6px; }
.btn-diag-start { padding: 14px 34px; font-size: 16px; }
.diag-form-tip { font-size: 12.5px; color: var(--text-dim); }
.diag-form-tip b { color: var(--accent-light); }

.diag-platform-preview { margin-top: 24px; padding-top: 20px; border-top: 1px dashed var(--border); display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.diag-preview-label { font-size: 13px; color: var(--text-dim); }
.diag-preview-grid { display: flex; gap: 10px; flex-wrap: wrap; }
.diag-preview-item {
    width: 42px; height: 42px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(99,102,241,.1); border: 1px solid var(--border);
    font-size: 13px; font-weight: 700; color: var(--text-soft);
}
.diag-preview-item img { width: 26px; height: 26px; object-fit: contain; }

/* 扫描动画 */
.diag-scan-head { display: flex; align-items: center; gap: 18px; margin-bottom: 26px; }
.diag-scan-title { font-size: 17px; }
.diag-scan-title b { color: var(--accent-light); }
.diag-scan-status { font-size: 13px; color: var(--text-dim); margin-top: 4px; min-height: 20px; }
.ai-spinner {
    width: 38px; height: 38px; flex: none;
    border: 3px solid rgba(99,102,241,.2);
    border-top-color: var(--primary-light);
    border-radius: 50%;
    animation: aiSpin 0.9s linear infinite;
}
@keyframes aiSpin { to { transform: rotate(360deg); } }
.diag-scan-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.diag-scan-item {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 14px; border-radius: 12px;
    background: rgba(2, 6, 23, .5); border: 1px solid var(--border);
    transition: all .35s;
}
.diag-scan-item.scanning { border-color: var(--primary-light); box-shadow: 0 0 18px rgba(99,102,241,.25); }
.diag-scan-item.scanning .diag-scan-state { color: var(--primary-light); }
.diag-scan-item.done { border-color: rgba(34,197,94,.45); background: rgba(34,197,94,.06); }
.diag-scan-item.done .diag-scan-state { color: #4ade80; font-weight: 700; }
.diag-scan-icon {
    width: 30px; height: 30px; border-radius: 8px; flex: none;
    display: flex; align-items: center; justify-content: center;
    background: rgba(99,102,241,.12); font-size: 12px; font-weight: 700; color: var(--text-soft);
}
.diag-scan-icon img { width: 20px; height: 20px; object-fit: contain; }
.diag-scan-name { font-size: 13.5px; flex: 1; }
.diag-scan-state { font-size: 12px; color: var(--text-dim); }
.diag-progress { height: 6px; border-radius: 6px; background: rgba(2, 6, 23, .6); overflow: hidden; margin-bottom: 12px; }
.diag-progress-bar { height: 100%; width: 0; background: var(--gradient-1); border-radius: 6px; transition: width .6s ease; }
.diag-scan-tip { font-size: 12.5px; color: var(--text-dim); text-align: center; }

/* 结果概览 */
.diag-result-head { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.diag-result-head h2 { font-size: 21px; }
.diag-result-head h2 b { color: var(--accent-light); }
.diag-result-time { font-size: 12.5px; color: var(--text-dim); }
.diag-result-grid { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; margin-bottom: 26px; }
.diag-score-ring { position: relative; width: 150px; height: 150px; flex: none; }
.diag-score-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: rgba(99,102,241,.15); stroke-width: 10; }
.ring-fg { fill: none; stroke: #6366f1; stroke-width: 10; stroke-linecap: round; transition: stroke-dashoffset 1s ease; }
.diag-score-num {
    position: absolute; inset: 0; display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 2px;
}
.diag-score-num b { font-size: 40px; font-weight: 800; background: var(--gradient-1); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.diag-score-num span { font-size: 11.5px; color: var(--text-dim); }
.diag-score-ring.big { width: 190px; height: 190px; }
.diag-score-ring.big .diag-score-num b { font-size: 52px; }
.diag-result-stats { display: flex; gap: 16px; flex-wrap: wrap; }
.diag-stat {
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    min-width: 108px; padding: 16px 18px; border-radius: 12px;
    background: rgba(99,102,241,.08); border: 1px solid var(--border);
}
.diag-stat b { font-size: 24px; color: var(--accent-light); }
.diag-stat span { font-size: 12px; color: var(--text-dim); }
.diag-stat.warn b { color: #f87171; }
.diag-chart-title { font-size: 16px; margin-bottom: 16px; color: var(--text-soft); }
.diag-bar-chart { display: flex; align-items: flex-end; gap: 12px; height: 200px; padding: 0 6px; margin-bottom: 24px; }
.diag-bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; height: 100%; gap: 6px; }
.diag-bar-val { font-size: 12px; color: var(--text-soft); font-weight: 600; }
.diag-bar-wrap { flex: 1; width: 100%; max-width: 46px; display: flex; align-items: flex-end; background: rgba(2, 6, 23, .5); border-radius: 8px; overflow: hidden; }
.diag-bar { width: 100%; height: 0; background: rgba(99,102,241,.45); border-radius: 8px; transition: height .8s cubic-bezier(.22,1,.36,1); }
.diag-bar.cited { background: var(--gradient-1); box-shadow: 0 0 16px rgba(99,102,241,.4); }
.diag-bar-name { font-size: 12px; color: var(--text-dim); white-space: nowrap; }
.diag-bar-state { font-size: 11px; color: var(--text-dim); }
.diag-bar-state.on { color: #4ade80; }
.diag-result-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* 咨询区 */
.contact-section { position: relative; z-index: 1; text-align: center; }
.section-sub { color: var(--text-dim); font-size: 15px; margin-bottom: 26px; }
.contact-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.footer-tip { font-size: 12px; color: var(--text-dim); margin-top: 6px; }

/* ===== 诊断报告页 ===== */
.diag-report { padding: 130px 0 60px; position: relative; z-index: 1; }
.diag-rpt-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.diag-rpt-tag {
    display: inline-block; font-size: 12px; letter-spacing: 2px;
    color: var(--accent-light); border: 1px solid rgba(6,182,212,.4);
    padding: 4px 12px; border-radius: 20px; margin-bottom: 12px;
}
.diag-rpt-brand { font-size: 34px; margin-bottom: 8px; }
.diag-rpt-meta { font-size: 13px; color: var(--text-dim); }
.btn-rpt-new { white-space: nowrap; }
.diag-rpt-score { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; }
.diag-rpt-grade { flex: 1; min-width: 260px; }
.diag-rpt-grade h2 { font-size: 22px; margin-bottom: 8px; }
.diag-rpt-grade > p { color: var(--text-dim); font-size: 14px; margin-bottom: 18px; }
.diag-rpt-stats { display: flex; gap: 14px; flex-wrap: wrap; }
.diag-sec-title { font-size: 17px; margin-bottom: 20px; color: var(--text-soft); }
.diag-rpt-charts { display: grid; grid-template-columns: 300px 1fr; gap: 30px; align-items: center; }
.diag-radar svg { width: 100%; height: auto; }
.radar-grid { fill: none; stroke: rgba(99,102,241,.18); stroke-width: 1; }
.radar-axis { stroke: rgba(99,102,241,.14); stroke-width: 1; }
.radar-poly { fill: rgba(99,102,241,.25); stroke: #818cf8; stroke-width: 2; stroke-linejoin: round; }
.radar-label { fill: var(--text-dim); font-size: 11px; }
.diag-bars { display: flex; flex-direction: column; gap: 10px; }
.diag-bar-row { display: grid; grid-template-columns: 76px 1fr 44px 64px; align-items: center; gap: 10px; }
.diag-bar-row .diag-bar-name { font-size: 13px; color: var(--text-soft); white-space: nowrap; }
.diag-bar-track { height: 10px; border-radius: 6px; background: rgba(2, 6, 23, .6); overflow: hidden; }
.diag-bar-fill { height: 100%; background: rgba(99,102,241,.45); border-radius: 6px; }
.diag-bar-fill.cited { background: var(--gradient-1); }
.diag-bar-row .diag-bar-num { font-size: 13px; color: var(--text-soft); text-align: right; font-weight: 600; }
.diag-bar-row .diag-bar-state { font-size: 11.5px; color: var(--text-dim); }
.diag-bar-row .diag-bar-state.on { color: #4ade80; }
.diag-p-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.diag-p-item { padding: 16px 18px; border-radius: 12px; background: rgba(2, 6, 23, .45); border: 1px solid var(--border); }
.diag-p-item.cited { border-color: rgba(34,197,94,.3); }
.diag-p-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.diag-p-icon {
    width: 34px; height: 34px; border-radius: 9px; flex: none;
    display: flex; align-items: center; justify-content: center;
    background: rgba(99,102,241,.12); font-size: 13px; font-weight: 700; color: var(--text-soft);
}
.diag-p-icon img { width: 22px; height: 22px; object-fit: contain; }
.diag-p-head b { font-size: 15px; flex: 1; }
.diag-p-score { font-size: 14px; color: var(--accent-light); font-weight: 700; }
.diag-p-state { font-size: 12px; color: var(--text-dim); }
.diag-p-item.cited .diag-p-state { color: #4ade80; }
.diag-p-note { font-size: 13px; color: var(--text-dim); line-height: 1.7; }
.diag-kb-warn { border-color: rgba(250,204,21,.35); background: rgba(250,204,21,.05); }
.diag-kb-warn p { color: var(--text-soft); font-size: 14px; line-height: 1.8; margin-bottom: 16px; }
.diag-kb-warn .red { color: #f87171; font-weight: 700; }

/* 建议列表 */
.advice-list { list-style: none; counter-reset: adv; display: flex; flex-direction: column; gap: 14px; }
.advice-list li {
    counter-increment: adv; position: relative;
    padding: 18px 20px 18px 56px; border-radius: 12px;
    background: rgba(2, 6, 23, .45); border: 1px solid var(--border);
}
.advice-list li::before {
    content: counter(adv); position: absolute; left: 18px; top: 18px;
    width: 26px; height: 26px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    background: var(--gradient-1); color: #fff; font-size: 13px; font-weight: 700;
}
.advice-list b { display: block; font-size: 15px; margin-bottom: 6px; }
.advice-list p { font-size: 13.5px; color: var(--text-dim); line-height: 1.8; }
.advice-level {
    display: inline-block; font-size: 11px; padding: 1px 8px; border-radius: 10px;
    border: 1px solid; margin-left: 8px; vertical-align: 2px;
}
.advice-level.level-高 { color: #f87171; border-color: rgba(239,68,68,.5); }
.advice-level.level-中 { color: #fbbf24; border-color: rgba(250,204,21,.5); }
.advice-level.level-低 { color: #4ade80; border-color: rgba(34,197,94,.5); }
.diag-cta-box {
    margin-top: 22px; padding: 20px 24px; border-radius: 12px; text-align: center;
    background: var(--gradient-soft); border: 1px solid var(--border-strong);
}
.diag-cta-box p { color: var(--text-soft); font-size: 14px; margin-bottom: 14px; }
.diag-cta-box .btn { margin: 0 6px; }

/* 解锁留资 */
.diag-unlock { position: relative; }
.diag-unlock-blur { filter: blur(5px); opacity: .5; pointer-events: none; user-select: none; }
.diag-unlock-form {
    position: absolute; inset: 0; z-index: 2;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: rgba(5, 8, 22, .55); border-radius: 12px; padding: 20px;
}
.diag-unlock-tip { font-size: 15px; color: var(--text-soft); margin-bottom: 16px; }
.diag-unlock-tip b { color: var(--accent-light); }
.diag-unlock-err { font-size: 13px; color: #f87171; margin-bottom: 10px; }
.diag-unlock-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.diag-unlock-row input {
    background: rgba(2, 6, 23, .7); border: 1px solid var(--border);
    color: var(--text); padding: 11px 14px; border-radius: 10px; font-size: 14px; outline: none; min-width: 150px;
}
.diag-unlock-row input:focus { border-color: var(--primary-light); }
.diag-unlock-sub { font-size: 12px; color: var(--text-dim); margin-top: 12px; }
.diag-rpt-foot { text-align: center; font-size: 12.5px; color: var(--text-dim); line-height: 2; margin: 30px 0; }
.diag-rpt-foot a { color: var(--accent-light); }

/* ===== 首页诊断入口区块 ===== */
.diag-entry { position: relative; z-index: 1; padding: 46px 0; }
.diag-entry-card {
    display: flex; align-items: center; gap: 40px; justify-content: space-between;
    background: var(--bg-card); border: 1px solid var(--border-strong);
    border-radius: 20px; padding: 40px 44px;
    backdrop-filter: blur(12px); box-shadow: var(--shadow-glow);
    position: relative; overflow: hidden;
}
.diag-entry-card::before {
    content: ''; position: absolute; top: -60px; right: -60px;
    width: 240px; height: 240px; border-radius: 50%;
    background: radial-gradient(circle, rgba(99,102,241,.25), transparent 70%);
}
.diag-entry-info { position: relative; z-index: 1; }
.diag-entry-title { font-size: 32px; margin: 12px 0 10px; }
.diag-entry-sub { color: var(--text-dim); font-size: 14.5px; line-height: 1.9; margin-bottom: 22px; }
.diag-entry-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.diag-entry-demo { display: flex; align-items: center; gap: 26px; position: relative; z-index: 1; }
.diag-demo-ring {
    width: 96px; height: 96px; border-radius: 50%; flex: none;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: conic-gradient(#6366f1 0 68%, rgba(99,102,241,.12) 68% 100%);
    position: relative;
}
.diag-demo-ring::before { content: ''; position: absolute; inset: 9px; border-radius: 50%; background: var(--bg-darker); }
.diag-demo-ring b { position: relative; font-size: 26px; color: var(--accent-light); }
.diag-demo-ring span { position: relative; font-size: 10px; color: var(--text-dim); }
.diag-demo-bars { display: flex; align-items: flex-end; gap: 7px; height: 90px; }
.diag-demo-bars span {
    width: 14px; border-radius: 4px 4px 0 0;
    background: linear-gradient(to top, rgba(99,102,241,.35), rgba(6,182,212,.75));
    animation: demoBar 2.4s ease-in-out infinite alternate;
}
.diag-demo-bars span:nth-child(2n) { animation-delay: .3s; }
.diag-demo-bars span:nth-child(3n) { animation-delay: .6s; }
@keyframes demoBar { from { transform: scaleY(.75); } to { transform: scaleY(1); } }
.diag-demo-bars span { transform-origin: bottom; }

/* ===== 企业知识库 ===== */
.kb-hero { padding-bottom: 10px; }
.kb-main { position: relative; z-index: 1; padding-top: 26px; }
.kb-tools { display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin-bottom: 22px; }
.kb-cats { display: flex; gap: 8px; flex-wrap: wrap; }
.kb-cat {
    font-size: 13.5px; color: var(--text-soft);
    padding: 8px 16px; border-radius: 20px;
    background: rgba(99,102,241,.08); border: 1px solid var(--border);
    transition: all .25s;
}
.kb-cat span { font-size: 11.5px; color: var(--text-dim); margin-left: 4px; }
.kb-cat:hover { border-color: var(--primary-light); color: var(--accent-light); }
.kb-cat.active { background: var(--gradient-1); color: #fff; border-color: transparent; }
.kb-cat.active span { color: rgba(255,255,255,.8); }
.kb-search { display: flex; gap: 8px; }
.kb-search input {
    background: rgba(2, 6, 23, .6); border: 1px solid var(--border);
    color: var(--text); padding: 10px 14px; border-radius: 10px; font-size: 14px; outline: none; min-width: 200px;
}
.kb-search input:focus { border-color: var(--primary-light); }
.kb-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 26px; }
.kb-card {
    display: flex; flex-direction: column; gap: 10px;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 14px; padding: 22px; transition: all .3s;
}
.kb-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow-glow); }
.kb-cat-badge {
    align-self: flex-start; font-size: 11.5px; color: var(--accent-light);
    border: 1px solid rgba(6,182,212,.35); padding: 2px 10px; border-radius: 12px;
}
.kb-card-title { font-size: 16.5px; line-height: 1.5; }
.kb-card-summary { font-size: 13px; color: var(--text-dim); line-height: 1.8; flex: 1; }
.kb-card-more { font-size: 13px; color: var(--accent-light); }
.kb-empty { text-align: center; color: var(--text-dim); padding: 40px; }
.kb-empty p { margin-bottom: 16px; }
.kb-intro-box { border-color: var(--border-strong); }
.kb-intro-box h3 { font-size: 19px; margin-bottom: 22px; }
.kb-intro-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 24px; }
.kb-intro-item { padding: 20px; border-radius: 12px; background: rgba(2, 6, 23, .45); border: 1px solid var(--border); }
.kb-intro-item b { display: block; font-size: 15px; margin-bottom: 8px; color: var(--accent-light); }
.kb-intro-item p { font-size: 13px; color: var(--text-dim); line-height: 1.8; }
.kb-intro-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.kb-detail { padding-top: 130px; position: relative; z-index: 1; }
.kb-back { display: inline-block; font-size: 13.5px; color: var(--text-dim); margin-bottom: 16px; }
.kb-back:hover { color: var(--accent-light); }
.kb-article .kb-cat-badge { margin-bottom: 14px; }
.kb-title { font-size: 28px; margin-bottom: 10px; line-height: 1.4; }
.kb-meta { font-size: 13px; color: var(--text-dim); margin-bottom: 22px; padding-bottom: 18px; border-bottom: 1px dashed var(--border); }
.kb-content { font-size: 15px; line-height: 2; color: var(--text-soft); }
.kb-cta { text-align: center; }
.kb-cta h3 { font-size: 19px; margin-bottom: 10px; }
.kb-cta p { color: var(--text-dim); font-size: 14px; margin-bottom: 18px; }
.kb-cta .btn { margin: 0 6px; }

/* 响应式 */
@media (max-width: 900px) {
    .diag-form-row { grid-template-columns: 1fr; }
    .diag-scan-grid { grid-template-columns: repeat(2, 1fr); }
    .diag-rpt-charts { grid-template-columns: 1fr; }
    .diag-p-detail { grid-template-columns: 1fr; }
    .kb-grid { grid-template-columns: repeat(2, 1fr); }
    .kb-intro-cols { grid-template-columns: 1fr; }
    .diag-entry-card { flex-direction: column; text-align: center; padding: 30px 24px; }
    .diag-entry-actions { justify-content: center; }
    .diag-bar-chart { gap: 6px; height: 160px; }
    .diag-bar-col { min-width: 0; }
    .diag-bar-name { font-size: 10px; }
}
@media (max-width: 600px) {
    .diag-hero-title { font-size: 32px; }
    .diag-rpt-brand { font-size: 26px; }
    .kb-grid { grid-template-columns: 1fr; }
    .diag-scan-grid { grid-template-columns: 1fr; }
    .diag-result-grid { gap: 20px; justify-content: center; }
    .diag-rpt-score { justify-content: center; text-align: center; }
    .diag-bar-row { grid-template-columns: 62px 1fr 38px 56px; gap: 6px; }
    .diag-bar-row .diag-bar-state { font-size: 10px; }
    .diag-bar-chart { overflow-x: auto; }

    /* —— 600px 强化：诊断入口 demo 收窄 —— */
    .diag-entry-card { gap: 22px; }
    .diag-entry-title { font-size: 26px; }
    .diag-entry-sub { font-size: 13.5px; }
    .diag-demo-ring { width: 72px; height: 72px; }
    .diag-demo-ring::before { inset: 7px; }
    .diag-demo-ring b { font-size: 20px; }
    .diag-demo-bars { height: 62px; gap: 5px; }
    .diag-demo-bars span { width: 10px; }
    .diag-entry-demo { gap: 16px; }

    /* —— 600px 强化：诊断表单按钮整行 —— */
    .diag-form-actions { flex-direction: column; align-items: stretch; }
    .btn-diag-start { width: 100%; text-align: center; }
    .diag-form-tip { text-align: center; }

    /* —— 600px 强化：知识库搜索占满 —— */
    .kb-tools { flex-direction: column; align-items: stretch; }
    .kb-search { width: 100%; }
    .kb-search input { flex: 1; min-width: 0; width: 100%; }
}

/* ============================================================
   超窄屏深度适配 v20260828a
   （≤480px：导航紧凑单行、诊断入口隐藏 demo 防重叠）
   ============================================================ */
@media (max-width: 480px) {
    /* ===== 顶部导航：紧凑单行 ===== */
    .header { padding: 10px 0; }
    .nav { gap: 8px; }
    .logo { gap: 6px; min-width: 0; }
    .logo-icon { width: 28px; height: 28px; font-size: 13px; border-radius: 8px; flex: none; }
    .logo-img { max-width: 96px; height: 26px; }
    .logo-text { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 110px; min-width: 0; }
    .logo-city { font-size: 12px; }
    .city-switch { padding: 3px 6px; gap: 2px; min-width: 0; }
    .city-switch select { font-size: 11px; max-width: 74px; padding: 2px; }
    .city-switch-icon { display: none; }
    .nav-toggle { font-size: 20px; flex: none; margin-left: auto; }
    .nav-menu { padding: 16px 20px; gap: 14px; }
    .nav-menu a { font-size: 14px; }
    .nav-cta { width: 100%; text-align: center; }

    /* ===== 诊断入口卡片：隐藏 demo 防重叠 ===== */
    .diag-entry { padding: 34px 0; }
    .diag-entry-card { padding: 22px 16px; gap: 16px; }
    .diag-entry-card::before { display: none; }
    .diag-entry-title { font-size: 22px; }
    .diag-entry-sub br { display: none; }
    .diag-entry-sub { font-size: 13px; line-height: 1.8; margin-bottom: 16px; }
    .diag-entry-actions { flex-direction: column; align-items: stretch; }
    .diag-entry-actions .btn { width: 100%; text-align: center; padding: 12px 16px; font-size: 14px; }
    .diag-entry-demo { display: none; }

    /* ===== 诊断工具页 ===== */
    .diag-hero { padding-top: 116px; }
    .diag-hero-title { font-size: 26px; }
    .diag-hero-sub { font-size: 13.5px; }
    .diag-card { padding: 20px 14px; }
    .diag-form-row { gap: 12px; }
    .diag-form label { font-size: 13.5px; }
    .diag-form input, .diag-form select { font-size: 14px; padding: 10px 12px; }
    .diag-scan-head { flex-direction: column; align-items: flex-start; gap: 8px; }
    .diag-scan-grid { gap: 8px; }
    .diag-scan-item { padding: 10px; }
    .diag-scan-icon img { width: 16px; height: 16px; }
    .diag-scan-name { font-size: 12px; }
    .diag-scan-state { font-size: 10px; }
    .diag-result-grid { justify-content: center; }
    .diag-result-stats { justify-content: center; }
    .diag-rpt-head { flex-direction: column; }
    .diag-rpt-brand { font-size: 22px; }
    .diag-rpt-charts { gap: 12px; }
    .diag-p-detail { gap: 12px; }

    /* ===== 留资解锁：纵向堆叠 ===== */
    .diag-unlock-row { flex-direction: column; align-items: stretch; }
    .diag-unlock-row input { min-width: 0; width: 100%; }
    .diag-unlock-row .btn { width: 100%; text-align: center; }

    /* ===== 知识库 ===== */
    .kb-cats { gap: 6px; }
    .kb-cat { font-size: 12px; padding: 6px 12px; }
    .kb-title { font-size: 21px; }
    .kb-content { font-size: 14px; }
}

/* ===== 极端窄屏 ≤360px：再压缩 ===== */
@media (max-width: 360px) {
    .nav { gap: 6px; }
    .logo-text { max-width: 72px; font-size: 12px; }
    .logo-city { display: none; }
    .city-switch select { max-width: 56px; font-size: 10px; }
    .diag-entry-title { font-size: 20px; }
    .diag-rpt-brand { font-size: 20px; }
    .diag-bar-row { grid-template-columns: 46px 1fr 32px 44px; gap: 4px; }
    .diag-bar-name { font-size: 9px; }
    .diag-rpt-foot { font-size: 11px; }
    .kb-title { font-size: 19px; }
}