/* ==========================================================================
   铭赞网络 | GEO优化与全域网络营销服务商
   公共样式表 - 设计系统与组件库
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
    /* 主色调 - 科技蓝 */
    --c-primary: #2563EB;
    --c-primary-dark: #1D4ED8;
    --c-primary-light: #3B82F6;
    --c-accent: #06B6D4;
    --c-accent-light: #22D3EE;

    /* 深色系 */
    --c-dark: #0B1120;
    --c-dark-2: #111827;
    --c-dark-3: #1E293B;

    /* 中性色 */
    --c-text: #0F172A;
    --c-text-2: #334155;
    --c-text-3: #64748B;
    --c-text-4: #94A3B8;
    --c-border: #E2E8F0;
    --c-bg: #FFFFFF;
    --c-bg-soft: #F8FAFC;
    --c-bg-gray: #F1F5F9;

    /* 渐变 */
    --g-brand: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);
    --g-brand-soft: linear-gradient(135deg, rgba(37,99,235,.08) 0%, rgba(6,182,212,.08) 100%);
    --g-dark: linear-gradient(135deg, #0B1120 0%, #1E293B 100%);
    --g-hero: linear-gradient(135deg, rgba(11,17,32,.88) 0%, rgba(37,99,235,.72) 100%);

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(15,23,42,.06);
    --shadow: 0 4px 16px rgba(15,23,42,.08);
    --shadow-md: 0 8px 30px rgba(15,23,42,.10);
    --shadow-lg: 0 20px 50px rgba(15,23,42,.14);
    --shadow-blue: 0 12px 30px rgba(37,99,235,.25);

    /* 圆角 */
    --r-sm: 6px;
    --r: 10px;
    --r-md: 14px;
    --r-lg: 20px;
    --r-full: 999px;

    /* 尺寸 */
    --container: 1240px;
    --nav-h: 72px;

    /* 过渡 */
    --t: .3s cubic-bezier(.4,0,.2,1);
    --t-slow: .5s cubic-bezier(.4,0,.2,1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color var(--t); }
a:hover { color: var(--c-primary); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font: inherit; }

/* ---------- 通用容器 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 90px 0; }
.section-sm { padding: 60px 0; }
.section-dark { background: var(--c-dark); color: #E2E8F0; }
.section-soft { background: var(--c-bg-soft); }
.text-center { text-align: center; }
.gradient-text {
    background: var(--g-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ---------- 标题 ---------- */
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-head .eyebrow {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .08em;
    color: var(--c-primary);
    background: rgba(37,99,235,.08);
    padding: 6px 16px;
    border-radius: var(--r-full);
    margin-bottom: 18px;
}
.section-head h2 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -.01em;
    margin-bottom: 16px;
}
.section-head p {
    font-size: 17px;
    color: var(--c-text-3);
    line-height: 1.8;
}
.section-dark .section-head h2,
.section-dark .section-head p { color: #fff; }
.section-dark .section-head p { color: #94A3B8; }
.section-dark .section-head .eyebrow { background: rgba(37,99,235,.18); }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--r-full);
    transition: all var(--t);
    white-space: nowrap;
    line-height: 1;
}
.btn-primary {
    background: var(--g-brand);
    color: #fff;
    box-shadow: var(--shadow-blue);
}
.btn-primary:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 16px 36px rgba(37,99,235,.35);
}
.btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255,255,255,.4);
}
.btn-outline:hover {
    color: #fff;
    border-color: #fff;
    background: rgba(255,255,255,.1);
}
.btn-dark {
    background: var(--c-dark);
    color: #fff;
}
.btn-dark:hover { color: #fff; background: var(--c-primary); }
.btn-lg { padding: 17px 40px; font-size: 17px; }
.btn-arrow::after { content: "→"; transition: transform var(--t); }
.btn-arrow:hover::after { transform: translateX(4px); }

/* ---------- 顶部导航 ---------- */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    z-index: 1000;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: all var(--t);
}
.nav.scrolled {
    background: rgba(255,255,255,.95);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    box-shadow: var(--shadow-sm);
    border-bottom-color: rgba(226,232,240,.6);
}
.nav .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -.01em;
    flex-shrink: 0;
    transition: color var(--t);
}
.nav.scrolled .nav-logo { color: var(--c-text); }
.nav-logo .logo-mark {
    width: 38px; height: 38px;
    background: var(--g-brand);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px; font-weight: 800;
    box-shadow: var(--shadow-blue);
}
.nav-logo > span:last-child {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.25;
}
.nav-logo .logo-sub {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: rgba(255,255,255,.7);
    letter-spacing: .02em;
    transition: color var(--t);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 3px;
}
.nav.scrolled .nav-logo .logo-sub { color: var(--c-text-3); }
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-wrap: nowrap;
    white-space: nowrap;
    margin-left: 24px;
    padding-left: 24px;
    border-left: 1px solid rgba(255,255,255,.2);
}
.nav-menu > li { flex-shrink: 0; }
.nav-menu > li > a {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 14px;
    font-size: 15px;
    font-weight: 500;
    color: rgba(255,255,255,.85);
    border-radius: var(--r-sm);
    transition: all var(--t);
    white-space: nowrap;
}
.nav-menu > li > a:hover { color: #fff; background: rgba(255,255,255,.1); }
.nav.scrolled .nav-menu > li > a { color: var(--c-text-2); }
.nav.scrolled .nav-menu > li > a:hover { color: var(--c-primary); background: rgba(37,99,235,.06); }
.nav-menu > li > a::after { content: ""; }
.nav-menu .has-drop > a::after {
    content: "";
    width: 6px; height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg);
    margin-left: 2px;
    margin-top: -3px;
    transition: transform var(--t);
}
.nav-menu .has-drop:hover > a::after { transform: rotate(225deg); margin-top: 0; }

/* 下拉菜单 */
.nav-drop {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 220px;
    background: #fff;
    border-radius: var(--r-md);
    box-shadow: var(--shadow-lg);
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--t);
    border: 1px solid var(--c-border);
}
.nav-menu .has-drop { position: relative; }
.nav-menu .has-drop:hover .nav-drop {
    opacity: 1; visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.nav-drop a {
    display: block;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--c-text-2);
    border-radius: var(--r-sm);
    transition: all var(--t);
}
.nav-drop a:hover { background: var(--c-bg-gray); color: var(--c-primary); }

.nav-cta { margin-left: 12px; flex-shrink: 0; white-space: nowrap; }
.nav:not(.scrolled) .nav-cta {
    background: #fff;
    color: var(--c-primary);
    border-color: #fff;
}
.nav:not(.scrolled) .nav-cta:hover {
    background: rgba(255,255,255,.9);
    color: var(--c-primary-dark);
}
.nav-toggle {
    display: none;
    width: 40px; height: 40px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}
.nav-toggle span {
    width: 22px; height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all var(--t);
}
.nav.scrolled .nav-toggle span { background: var(--c-text); }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero 通用 ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--nav-h) + 60px) 0 80px;
    overflow: hidden;
    background: #050D1F;
    color: #fff;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 30%, rgba(37,99,235,.35) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 70%, rgba(6,182,212,.25) 0%, transparent 55%),
        radial-gradient(ellipse 40% 40% at 50% 50%, rgba(99,102,241,.15) 0%, transparent 70%),
        linear-gradient(180deg, #050D1F 0%, #0B1A3A 50%, #0A1530 100%);
    z-index: 0;
}
.hero-grid {
    position: absolute;
    inset: 0;
    z-index: 1;
    background-image:
        linear-gradient(rgba(59,130,246,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,.08) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 0%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 0%, transparent 80%);
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 50% at 30% 40%, rgba(11,17,32,0) 0%, rgba(11,17,32,.4) 70%);
    z-index: 2;
}
.hero .container { position: relative; z-index: 3; }
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.2);
    padding: 8px 18px;
    border-radius: var(--r-full);
    margin-bottom: 28px;
    backdrop-filter: blur(10px);
}
.hero-eyebrow .dot {
    width: 8px; height: 8px;
    background: var(--c-accent-light);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--c-accent-light);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .4; }
}
.hero h1 {
    font-size: clamp(34px, 5.5vw, 60px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -.02em;
    margin-bottom: 24px;
    max-width: 900px;
}
.hero .lead {
    font-size: clamp(16px, 1.6vw, 19px);
    color: #CBD5E1;
    line-height: 1.8;
    max-width: 680px;
    margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 64px;
    flex-wrap: wrap;
}
.hero-stat .num {
    font-size: 36px;
    font-weight: 800;
    line-height: 1;
    background: var(--g-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-stat .label { font-size: 14px; color: #94A3B8; margin-top: 8px; }

/* 装饰光斑 */
.hero::before, .hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 1;
    opacity: .5;
}
.hero::before {
    width: 480px; height: 480px;
    background: var(--c-primary);
    top: -120px; right: -80px;
}
.hero::after {
    width: 380px; height: 380px;
    background: var(--c-accent);
    bottom: -100px; left: -60px;
    opacity: .35;
}

/* ---------- 网格卡片 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-md);
    padding: 32px;
    transition: all var(--t);
    position: relative;
    overflow: hidden;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}
.card-icon {
    width: 56px; height: 56px;
    border-radius: var(--r);
    background: var(--g-brand-soft);
    display: flex; align-items: center; justify-content: center;
    font-size: 26px;
    margin-bottom: 20px;
    color: var(--c-primary);
}
.card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}
.card p { font-size: 15px; color: var(--c-text-3); line-height: 1.8; }
.card .card-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary);
}
.card .card-more::after { content: "→"; transition: transform var(--t); }
.card:hover .card-more::after { transform: translateX(4px); }

/* 编号卡片 */
.card-numbered .num {
    font-size: 40px;
    font-weight: 800;
    line-height: 1;
    background: var(--g-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: .9;
    margin-bottom: 16px;
}

/* ---------- 服务流程 ---------- */
.flow {
    display: flex;
    align-items: stretch;
    gap: 0;
    flex-wrap: wrap;
}
.flow-step {
    flex: 1;
    min-width: 180px;
    padding: 28px 24px;
    position: relative;
    text-align: center;
}
.flow-step::after {
    content: "→";
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--c-text-4);
    font-size: 20px;
    z-index: 2;
}
.flow-step:last-child::after { display: none; }
.flow-step .step-num {
    width: 44px; height: 44px;
    margin: 0 auto 16px;
    background: var(--g-brand);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700;
    box-shadow: var(--shadow-blue);
}
.flow-step h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.flow-step p { font-size: 13px; color: var(--c-text-3); }

/* ---------- 对比块 ---------- */
.compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.compare-col {
    border-radius: var(--r-md);
    padding: 36px;
    border: 1px solid var(--c-border);
}
.compare-col.old { background: var(--c-bg-gray); }
.compare-col.new {
    background: var(--g-brand);
    color: #fff;
    border: none;
}
.compare-col h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.compare-col ul li {
    padding: 10px 0;
    font-size: 15px;
    border-bottom: 1px dashed rgba(148,163,184,.3);
}
.compare-col.old ul li { color: var(--c-text-3); }
.compare-col.new ul li { color: rgba(255,255,255,.9); }
.compare-col ul li:last-child { border: none; }

/* ---------- 时间线 ---------- */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 40px;
}
.timeline::before {
    content: "";
    position: absolute;
    left: 11px;
    top: 8px; bottom: 8px;
    width: 2px;
    background: linear-gradient(var(--c-primary), var(--c-accent));
}
.timeline-item {
    position: relative;
    padding: 0 0 40px 40px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
    content: "";
    position: absolute;
    left: -35px;
    top: 4px;
    width: 24px; height: 24px;
    background: #fff;
    border: 3px solid var(--c-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 6px rgba(37,99,235,.12);
}
.timeline-item .year {
    font-size: 24px;
    font-weight: 800;
    color: var(--c-primary);
    margin-bottom: 6px;
}
.timeline-item h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.timeline-item p { font-size: 15px; color: var(--c-text-3); }

/* ---------- 案例网格 ---------- */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.case-card {
    border-radius: var(--r-md);
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--c-border);
    transition: all var(--t);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.case-thumb {
    aspect-ratio: 16/10;
    background: var(--g-brand);
    position: relative;
    overflow: hidden;
}
/* 案例缩略图装饰 - 替代空白渐变 */
.case-thumb::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
    background-size: 32px 32px;
}
.case-thumb::after {
    content: "";
    position: absolute;
    width: 70%; height: 70%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,.25) 0%, transparent 70%);
    filter: blur(30px);
    top: 15%; left: 15%;
    animation: float-glow 8s ease-in-out infinite;
}
.case-thumb .case-tag {
    position: absolute;
    top: 14px; left: 14px;
    background: rgba(255,255,255,.95);
    color: var(--c-primary);
    font-size: 12px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: var(--r-full);
}
.case-thumb[data-url] {
    cursor: pointer;
}
.case-thumb[data-url] .case-visit {
    position: absolute;
    top: 14px; right: 14px;
    background: rgba(255,255,255,.18);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: var(--r-full);
    border: 1px solid rgba(255,255,255,.3);
    transition: all var(--t);
}
.case-thumb[data-url]:hover .case-visit {
    background: #fff;
    color: var(--c-primary);
}
.case-body { padding: 22px; }
.case-body h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.case-body p { font-size: 14px; color: var(--c-text-3); line-height: 1.7; }
.case-meta {
    display: flex; gap: 12px;
    margin-top: 14px;
    flex-wrap: wrap;
}
.case-meta span {
    font-size: 12px;
    color: var(--c-text-3);
    background: var(--c-bg-gray);
    padding: 4px 10px;
    border-radius: var(--r-sm);
}

/* ---------- 筛选标签 ---------- */
.filter-tabs {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}
.filter-tabs button {
    padding: 10px 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--c-text-2);
    border-radius: var(--r-full);
    border: 1px solid var(--c-border);
    transition: all var(--t);
}
.filter-tabs button.active,
.filter-tabs button:hover {
    background: var(--g-brand);
    color: #fff;
    border-color: transparent;
}

/* ---------- 知识/文章列表 ---------- */
.knowledge-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
}
.knowledge-side {
    position: sticky;
    top: calc(var(--nav-h) + 30px);
    align-self: start;
}
.knowledge-side h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-primary);
}
.knowledge-side ul li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    font-size: 14px;
    color: var(--c-text-2);
    border-radius: var(--r-sm);
    transition: all var(--t);
}
.knowledge-side ul li a:hover,
.knowledge-side ul li a.active {
    background: var(--g-brand-soft);
    color: var(--c-primary);
    font-weight: 600;
}
.knowledge-side ul li a .count { font-size: 12px; color: var(--c-text-4); }

.article-list { display: grid; gap: 20px; }
.article-item {
    display: flex;
    gap: 24px;
    padding: 24px;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-md);
    transition: all var(--t);
}
.article-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: transparent; }
.article-thumb {
    width: 200px;
    flex-shrink: 0;
    aspect-ratio: 4/3;
    border-radius: var(--r);
    background: var(--g-brand);
    overflow: hidden;
    position: relative;
}
/* 文章缩略图装饰 - 替代空白渐变 */
.article-thumb::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.1) 1px, transparent 1px);
    background-size: 28px 28px;
}
.article-thumb::after {
    content: "";
    position: absolute;
    width: 60%; height: 60%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,.3) 0%, transparent 70%);
    filter: blur(25px);
    top: 20%; left: 20%;
}
.article-info { flex: 1; }
.article-info .cat {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--c-primary);
    background: rgba(37,99,235,.08);
    padding: 4px 10px;
    border-radius: var(--r-sm);
    margin-bottom: 10px;
}
.article-info h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.article-info p { font-size: 14px; color: var(--c-text-3); line-height: 1.7; margin-bottom: 12px; }
.article-info .meta { font-size: 13px; color: var(--c-text-4); display: flex; gap: 16px; }

/* ---------- 文章正文 ---------- */
.article-body {
    max-width: 820px;
    margin: 0 auto;
}
.article-body h1 { font-size: 34px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.article-body .article-meta { font-size: 14px; color: var(--c-text-4); margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--c-border); }
.article-body h2 { font-size: 26px; font-weight: 700; margin: 40px 0 18px; }
.article-body h3 { font-size: 20px; font-weight: 700; margin: 30px 0 14px; }
.article-body p { font-size: 16px; line-height: 1.9; color: var(--c-text-2); margin-bottom: 18px; }
.article-body ul, .article-body ol { margin: 0 0 20px 22px; }
.article-body li { font-size: 16px; line-height: 1.9; color: var(--c-text-2); margin-bottom: 8px; }
.article-body blockquote {
    border-left: 4px solid var(--c-primary);
    background: var(--c-bg-soft);
    padding: 20px 24px;
    border-radius: 0 var(--r) var(--r) 0;
    margin: 24px 0;
    color: var(--c-text-2);
}
.article-body img { border-radius: var(--r-md); margin: 24px 0; }

/* ---------- 特性横排 ---------- */
.feature-row {
    display: flex;
    align-items: center;
    gap: 60px;
}
.feature-row.reverse { flex-direction: row-reverse; }
.feature-text { flex: 1; }
.feature-text h2 { font-size: 32px; font-weight: 800; margin-bottom: 18px; line-height: 1.3; }
.feature-text p { font-size: 16px; color: var(--c-text-3); line-height: 1.9; margin-bottom: 16px; }
.feature-text ul { margin: 20px 0; }
.feature-text ul li {
    padding: 8px 0 8px 28px;
    position: relative;
    color: var(--c-text-2);
    font-size: 15px;
}
.feature-text ul li::before {
    content: "✓";
    position: absolute;
    left: 0; top: 8px;
    color: var(--c-primary);
    font-weight: 700;
}
.feature-visual {
    flex: 1;
    aspect-ratio: 5/4;
    background: var(--g-dark);
    border-radius: var(--r-lg);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}
/* 视觉块装饰 - 让空荡的渐变块有内容感 */
.feature-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59,130,246,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,.08) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 0%, transparent 85%);
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 0%, transparent 85%);
}
.feature-visual::after {
    content: "";
    position: absolute;
    width: 60%; height: 60%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37,99,235,.5) 0%, transparent 70%);
    filter: blur(40px);
    top: 20%; left: 20%;
    animation: float-glow 6s ease-in-out infinite;
}
@keyframes float-glow {
    0%, 100% { transform: translate(0, 0); opacity: .6; }
    50% { transform: translate(10%, -10%); opacity: 1; }
}

/* ---------- CTA 条 ---------- */
.cta-band {
    background: var(--g-dark);
    color: #fff;
    padding: 70px 0;
    position: relative;
    overflow: hidden;
}
.cta-band::before {
    content: "";
    position: absolute;
    width: 500px; height: 500px;
    background: var(--c-primary);
    border-radius: 50%;
    filter: blur(100px);
    opacity: .3;
    top: -200px; right: -100px;
}
.cta-band .container { position: relative; z-index: 1; }
.cta-band-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.cta-band h2 { font-size: 32px; font-weight: 800; margin-bottom: 10px; }
.cta-band p { color: #94A3B8; font-size: 16px; }

/* ---------- 数据统计条 ---------- */
.stat-band {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat-band .item .num {
    font-size: 44px;
    font-weight: 800;
    line-height: 1;
    background: var(--g-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-band .item .label { font-size: 15px; color: var(--c-text-3); margin-top: 10px; }

/* ---------- FAQ ---------- */
.faq-item {
    border: 1px solid var(--c-border);
    border-radius: var(--r);
    margin-bottom: 14px;
    overflow: hidden;
    transition: all var(--t);
}
.faq-item.active { box-shadow: var(--shadow); border-color: var(--c-primary); }
.faq-q {
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--c-text);
}
.faq-q::after {
    content: "+";
    font-size: 22px;
    color: var(--c-primary);
    transition: transform var(--t);
}
.faq-item.active .faq-q::after { transform: rotate(45deg); }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--t-slow);
}
.faq-item.active .faq-a { max-height: 400px; }
.faq-a-inner { padding: 0 24px 22px; color: var(--c-text-3); font-size: 15px; line-height: 1.8; }

/* ---------- 面包屑 ---------- */
.breadcrumb {
    padding: calc(var(--nav-h) + 40px) 0 0;
    background: #050D1F;
    background-image:
        linear-gradient(rgba(59,130,246,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,.06) 1px, transparent 1px),
        radial-gradient(ellipse 80% 60% at 20% 30%, rgba(37,99,235,.2) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 70%, rgba(6,182,212,.15) 0%, transparent 55%),
        linear-gradient(180deg, #050D1F 0%, #0B1A3A 100%);
    background-size: 60px 60px, 60px 60px, auto, auto, auto;
}
.breadcrumb .container { padding-top: 20px; padding-bottom: 20px; }
.breadcrumb ol { display: flex; gap: 8px; font-size: 14px; color: rgba(255,255,255,.6); flex-wrap: wrap; }
.breadcrumb ol li::after { content: "/"; margin-left: 8px; color: rgba(255,255,255,.3); }
.breadcrumb ol li:last-child::after { display: none; }
.breadcrumb ol li:last-child { color: var(--c-accent-light); }
.breadcrumb ol li a { color: rgba(255,255,255,.7); }
.breadcrumb ol li a:hover { color: #fff; }

/* ---------- 页面通用头部(内页Hero) ---------- */
.page-hero {
    background: #050D1F;
    background-image:
        linear-gradient(rgba(59,130,246,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,.06) 1px, transparent 1px),
        radial-gradient(ellipse 80% 60% at 20% 30%, rgba(37,99,235,.2) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 70%, rgba(6,182,212,.15) 0%, transparent 55%),
        linear-gradient(180deg, #0B1A3A 0%, #0A1530 100%);
    background-size: 60px 60px, 60px 60px, auto, auto, auto;
    color: #fff;
    padding: calc(var(--nav-h) + 120px) 0 70px;
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(37,99,235,.4) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: .5;
    top: -180px; right: -100px;
}
.page-hero::after {
    content: "";
    position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(6,182,212,.35) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    opacity: .4;
    bottom: -150px; left: -80px;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .eyebrow {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-accent-light);
    letter-spacing: .08em;
    margin-bottom: 16px;
}
.page-hero h1 {
    font-size: clamp(30px, 4.5vw, 48px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    max-width: 800px;
}
.page-hero p {
    font-size: 17px;
    color: #CBD5E1;
    max-width: 680px;
    line-height: 1.8;
}

/* ---------- 通用页面内容 ---------- */
.page-content { padding: 70px 0; }
.prose { max-width: 820px; }
.prose h2 { font-size: 28px; font-weight: 800; margin: 40px 0 16px; }
.prose h3 { font-size: 21px; font-weight: 700; margin: 28px 0 12px; color: var(--c-text); }
.prose p { font-size: 16px; line-height: 1.9; color: var(--c-text-2); margin-bottom: 16px; }
.prose ul, .prose ol { margin: 0 0 18px 22px; }
.prose li { font-size: 16px; line-height: 1.9; color: var(--c-text-2); margin-bottom: 6px; }

/* ---------- 底部 ---------- */
.footer {
    background: var(--c-dark);
    color: #94A3B8;
    padding: 70px 0 0;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr 1.4fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(148,163,184,.15);
}
.footer-brand .nav-logo { color: #fff; margin-bottom: 18px; }
.footer-brand .nav-logo .logo-sub { color: #64748B; }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-bottom: 18px; }
.footer-brand .contact-line { font-size: 14px; margin-bottom: 8px; display: flex; gap: 8px; }
.footer-brand .contact-line strong { color: #fff; font-size: 22px; }
.footer-col h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: #94A3B8; transition: all var(--t); }
.footer-col ul li a:hover { color: #fff; padding-left: 4px; }

.footer-regions {
    padding: 30px 0;
    border-bottom: 1px solid rgba(148,163,184,.15);
}
.footer-regions h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-regions .regions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
}
.footer-regions .regions a {
    font-size: 13px;
    color: #64748B;
    transition: all var(--t);
}
.footer-regions .regions a:hover { color: var(--c-accent-light); }

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
}
.footer-bottom .links { display: flex; gap: 16px; }
.footer-bottom .links a:hover { color: #fff; }

/* ---------- 浮动咨询 ---------- */
.float-bar {
    position: fixed;
    right: 20px;
    bottom: 30px;
    z-index: 900;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.float-btn {
    width: 54px; height: 54px;
    border-radius: 50%;
    background: #fff;
    box-shadow: var(--shadow-md);
    display: flex; align-items: center; justify-content: center;
    color: var(--c-text-2);
    transition: all var(--t);
    position: relative;
}
.float-btn:hover { transform: translateY(-3px); color: var(--c-primary); }
.float-btn.primary { background: var(--g-brand); color: #fff; }
.float-btn .tip {
    position: absolute;
    right: 64px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--c-dark);
    color: #fff;
    font-size: 13px;
    padding: 6px 14px;
    border-radius: var(--r-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--t);
}
.float-btn:hover .tip { opacity: 1; visibility: visible; }

/* ---------- 滚动入场动画 ---------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .7s ease, transform .7s ease;
}
.reveal.in {
    opacity: 1;
    transform: none;
}
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }

/* ---------- 移动端菜单遮罩 ---------- */
.nav-mask {
    position: fixed;
    inset: 0;
    background: rgba(11,17,32,.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--t);
}
.nav-mask.active { opacity: 1; visibility: visible; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
    .nav-menu { gap: 0; }
    .nav-menu > li > a { padding: 8px 10px; font-size: 14px; }
    .nav-cta { margin-left: 8px; font-size: 14px; padding: 8px 16px; }
    .nav-logo { font-size: 18px; }
    .nav-logo .logo-mark { width: 34px; height: 34px; font-size: 16px; }
    .nav-logo .logo-sub { display: none; }
    .footer-top { grid-template-columns: 1fr 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-row, .feature-row.reverse { flex-direction: column; gap: 30px; }
    .knowledge-layout { grid-template-columns: 1fr; }
    .knowledge-side { position: static; }
    .compare { grid-template-columns: 1fr; }
    .stat-band { grid-template-columns: repeat(2, 1fr); gap: 36px; }
    .cta-band-inner { flex-direction: column; text-align: center; align-items: center; }
    .nav-menu, .nav-cta { display: none; }
    .nav-toggle { display: flex; }
    /* 移动端展开菜单 */
    .nav-menu.mobile-open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--nav-h);
        right: 0;
        width: 80%;
        max-width: 320px;
        height: calc(100vh - var(--nav-h));
        background: #fff;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        overflow-y: auto;
        align-items: stretch;
        gap: 4px;
        z-index: 999;
    }
    .nav-menu.mobile-open > li { width: 100%; }
    .nav-menu.mobile-open > li > a { padding: 14px 16px; font-size: 16px; }
    .nav-drop {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--c-bg-gray);
        margin-top: 4px;
        display: none;
    }
    .nav-menu.mobile-open .has-drop.open .nav-drop { display: block; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: 1fr; }
    .stat-band { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .article-item { flex-direction: column; }
    .article-thumb { width: 100%; }
    .hero-stats { gap: 30px; }
    .hero { min-height: auto; padding: calc(var(--nav-h) + 50px) 0 60px; }
    .flow { flex-direction: column; }
    .flow-step::after { display: none; }
    .float-bar { right: 12px; bottom: 20px; }
}
@media (max-width: 768px) {
    .section { padding: 60px 0; }
}
@media (max-width: 480px) {
    .footer-top { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .container { padding: 0 16px; }
    .btn { padding: 12px 24px; font-size: 15px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
}

/* ==========================================================================
   资质荣誉卡片
   ========================================================================== */
.honor-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-lg);
    overflow: hidden;
    transition: all var(--t);
    display: flex;
    flex-direction: column;
}
.honor-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.honor-img {
    aspect-ratio: 4/5;
    background: var(--c-bg-gray);
    overflow: hidden;
    position: relative;
}
.honor-img::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(37,99,235,.06), rgba(6,182,212,.06));
    z-index: 0;
}
.honor-img img {
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: contain;
    z-index: 1;
    transition: transform var(--t-slow);
    padding: 16px;
    background: #fff;
}
.honor-card:hover .honor-img img { transform: scale(1.04); }
.honor-body {
    padding: 24px;
    text-align: center;
}
.honor-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--c-primary);
    background: rgba(37,99,235,.08);
    padding: 4px 12px;
    border-radius: var(--r-full);
    margin-bottom: 12px;
    letter-spacing: .04em;
}
.honor-body h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
    color: var(--c-text);
}
.honor-body p {
    font-size: 14px;
    color: var(--c-text-3);
    line-height: 1.7;
}

/* ==========================================================================
   品牌展示卡片（关于页 Logo）
   ========================================================================== */
.feature-visual.brand-showcase {
    background: linear-gradient(160deg, #F8FAFC 0%, #EFF6FF 40%, #ECFEFF 100%);
    border-radius: 24px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 40px 44px;
    position: relative;
    box-shadow:
        0 24px 60px rgba(15,23,42,.10),
        0 4px 16px rgba(15,23,42,.04),
        inset 0 0 0 1px rgba(255,255,255,.8);
}
.brand-showcase-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}
.brand-showcase-ring {
    position: absolute;
    width: 280px; height: 280px;
    border-radius: 50%;
    border: 1.5px solid rgba(37,99,235,.18);
    top: -60px; right: -60px;
    animation: ring-rotate 20s linear infinite;
}
.brand-showcase-ring.ring-2 {
    width: 180px; height: 180px;
    border: 1px dashed rgba(6,182,212,.25);
    top: auto; bottom: -40px; right: 40px;
    animation-duration: 30s;
    animation-direction: reverse;
}
@keyframes ring-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.brand-showcase img {
    position: relative;
    z-index: 2;
    max-width: 100%;
    max-height: 260px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 12px 32px rgba(37,99,235,.18)) drop-shadow(0 4px 8px rgba(15,23,42,.06));
    transition: transform var(--t-slow);
}
.feature-visual.brand-showcase:hover img {
    transform: scale(1.03);
}
.brand-showcase-accent {
    position: absolute;
    bottom: 20px;
    left: 32px;
    z-index: 3;
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--r-full);
    border: 1px solid rgba(37,99,235,.12);
}
.brand-showcase-accent span {
    font-size: 22px;
    font-weight: 800;
    background: var(--g-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}
.brand-showcase-accent em {
    font-size: 13px;
    font-weight: 500;
    font-style: normal;
    color: var(--c-text-3);
    letter-spacing: .02em;
}

/* ==========================================================================
   案例图片放大灯箱
   ========================================================================== */
.case-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(11,17,32,.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t), visibility var(--t);
}
.case-lightbox.active {
    opacity: 1;
    visibility: visible;
}
.case-lightbox img {
    max-width: 95%;
    max-height: 90vh;
    border-radius: var(--r-md);
    box-shadow: 0 20px 60px rgba(0,0,0,.5);
    transform: scale(.95);
    transition: transform var(--t-slow);
}
.case-lightbox.active img {
    transform: scale(1);
}
.case-lightbox-close {
    position: absolute;
    top: 24px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255,255,255,.12);
    color: #fff;
    font-size: 32px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--t);
    user-select: none;
}
.case-lightbox-close:hover {
    background: rgba(255,255,255,.25);
    transform: rotate(90deg);
}
@media (max-width: 768px) {
    .case-lightbox { padding: 20px; }
    .case-lightbox img { max-width: 100%; max-height: 80vh; }
    .case-lightbox-close { top: 16px; right: 16px; width: 40px; height: 40px; font-size: 26px; }
}

/* ==========================================================================
   闫宝龙专家实体模块（首页）
   ========================================================================== */
.expert-band {
    padding: 80px 0;
}
.expert-card {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 56px;
    align-items: center;
    background: linear-gradient(135deg, #fff 0%, #F8FAFC 50%, #EFF6FF 100%);
    border-radius: var(--r-lg);
    padding: 48px;
    box-shadow: 0 20px 60px -20px rgba(15,23,42,.12);
    border: 1px solid rgba(37,99,235,.08);
    position: relative;
    overflow: hidden;
}
.expert-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37,99,235,.08) 0%, transparent 60%);
    pointer-events: none;
}
.expert-photo {
    position: relative;
    width: 100%;
    aspect-ratio: 4/5;
    border-radius: var(--r-md);
    overflow: hidden;
    background: linear-gradient(135deg, #1E293B, #0F172A);
    box-shadow: 0 20px 40px -10px rgba(15,23,42,.3);
}
.expert-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--t-slow);
}
.expert-card:hover .expert-photo img {
    transform: scale(1.04);
}
.expert-photo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11,17,32,.5) 0%, transparent 50%);
}
.expert-badge {
    position: absolute;
    bottom: 18px;
    left: 18px;
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--c-primary);
    font-size: 13px;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: var(--r-full);
    z-index: 2;
}
.expert-info {
    position: relative;
    z-index: 1;
}
.expert-info .eyebrow {
    display: inline-block;
    margin-bottom: 12px;
}
.expert-info h2 {
    font-size: var(--f-3xl);
    font-weight: 800;
    color: var(--c-text);
    line-height: 1.2;
    margin-bottom: 18px;
    background: linear-gradient(135deg, var(--c-text) 0%, var(--c-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.expert-info > p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--c-text-2);
    margin-bottom: 24px;
}
.expert-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 32px;
}
.expert-tags span {
    display: inline-block;
    background: rgba(37,99,235,.08);
    color: var(--c-primary);
    font-size: 13px;
    font-weight: 500;
    padding: 7px 16px;
    border-radius: var(--r-full);
    border: 1px solid rgba(37,99,235,.15);
}
.expert-info .btn-outline {
    color: var(--c-primary);
    border: 1.5px solid rgba(37,99,235,.35);
    background: transparent;
}
.expert-info .btn-outline:hover {
    color: #fff;
    border-color: var(--c-primary);
    background: var(--c-primary);
}
.expert-info .btn {
    margin-right: 12px;
}
@media (max-width: 900px) {
    .expert-band { padding: 60px 0; }
    .expert-card {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 32px;
    }
    .expert-photo {
        max-width: 320px;
        margin: 0 auto;
    }
}
@media (max-width: 600px) {
    .expert-band { padding: 48px 0; }
    .expert-card { padding: 24px; }
    .expert-info h2 { font-size: var(--f-2xl); }
    .expert-info > p { font-size: 15px; }
}

/* ==========================================================================
   铭赞GEO三层模型
   ========================================================================== */
.geo-model-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}
.geo-model-step {
    display: flex;
    align-items: center;
    gap: 28px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: var(--r-md);
    padding: 32px 36px;
    transition: all var(--t);
    position: relative;
    overflow: hidden;
}
.geo-model-step::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--c-accent), var(--c-primary));
    opacity: 0;
    transition: opacity var(--t);
}
.geo-model-step:hover {
    background: rgba(255,255,255,.06);
    border-color: rgba(37,99,235,.3);
    transform: translateX(4px);
}
.geo-model-step:hover::before {
    opacity: 1;
}
.step-num {
    font-size: 48px;
    font-weight: 800;
    color: rgba(37,99,235,.3);
    line-height: 1;
    flex-shrink: 0;
    min-width: 64px;
}
.step-body {
    flex: 1;
}
.step-body h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.step-body p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--c-text-3);
}
.step-key {
    display: inline-block;
    background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: var(--r-full);
    flex-shrink: 0;
    white-space: nowrap;
}
@media (max-width: 768px) {
    .geo-model-step {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 24px;
    }
    .step-num { font-size: 36px; }
    .step-body h3 { font-size: 18px; }
}

/* ==========================================================================
   铭赞GEO方法论（6步流程）
   ========================================================================== */
.geo-method-flow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    max-width: 760px;
    margin: 0 auto;
}
.method-step {
    display: flex;
    align-items: center;
    gap: 24px;
    width: 100%;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-md);
    padding: 22px 28px;
    transition: all var(--t);
    box-shadow: 0 4px 12px -6px rgba(15,23,42,.06);
}
.method-step:hover {
    border-color: rgba(37,99,235,.4);
    box-shadow: 0 12px 28px -10px rgba(37,99,235,.18);
    transform: translateY(-2px);
}
.method-num {
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    flex-shrink: 0;
    min-width: 48px;
}
.method-body {
    flex: 1;
}
.method-body h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 4px;
}
.method-body p {
    font-size: 14px;
    color: var(--c-text-3);
    line-height: 1.6;
}
.method-arrow {
    font-size: 22px;
    color: var(--c-primary);
    opacity: .5;
    line-height: 1;
}
@media (max-width: 768px) {
    .method-step {
        gap: 16px;
        padding: 18px 20px;
    }
    .method-num { font-size: 22px; min-width: 36px; }
    .method-body h4 { font-size: 16px; }
    .method-body p { font-size: 13px; }
    .method-arrow { font-size: 18px; }
}

/* ==========================================================================
   GEO诊断页面
   ========================================================================== */
.diagnosis-wrap {
    max-width: 1100px;
}
.diagnosis-intro {
    margin-bottom: 64px;
}
.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
}
.intro-col h2 {
    font-size: var(--f-2xl);
    font-weight: 700;
    color: var(--c-text);
    margin: 12px 0 18px;
    line-height: 1.3;
}
.intro-col h3 {
    font-size: var(--f-xl);
    font-weight: 700;
    color: var(--c-text);
    margin: 12px 0 20px;
}
.intro-col p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--c-text-2);
    margin-bottom: 16px;
}
.intro-col ul {
    list-style: none;
    padding: 0;
    margin: 0 0 18px;
}
.intro-col ul li {
    padding: 8px 0 8px 26px;
    position: relative;
    font-size: 15px;
    color: var(--c-text-2);
    line-height: 1.7;
}
.intro-col ul li::before {
    content: '';
    position: absolute;
    left: 0; top: 16px;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
    opacity: .25;
}
.intro-col ul li::after {
    content: '';
    position: absolute;
    left: 4px; top: 20px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--c-primary);
}
.intro-aside {
    background: linear-gradient(135deg, #fff, #F8FAFC);
    border: 1px solid var(--c-border);
    border-radius: var(--r-md);
    padding: 32px;
    box-shadow: 0 12px 32px -16px rgba(15,23,42,.08);
}
.dim-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.dim-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.dim-num {
    font-size: 18px;
    font-weight: 800;
    color: var(--c-primary);
    flex-shrink: 0;
    min-width: 32px;
    line-height: 1.4;
}
.dim-item strong {
    display: block;
    font-size: 15px;
    color: var(--c-text);
    margin-bottom: 4px;
}
.dim-item p {
    font-size: 13px;
    color: var(--c-text-3);
    line-height: 1.6;
    margin: 0;
}

.diagnosis-form-wrap {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-lg);
    padding: 48px;
    box-shadow: 0 20px 60px -24px rgba(15,23,42,.12);
    margin-bottom: 64px;
}
.form-head {
    text-align: center;
    margin-bottom: 36px;
}
.form-head h2 {
    font-size: var(--f-2xl);
    font-weight: 700;
    color: var(--c-text);
    margin: 12px 0 12px;
}
.form-head p {
    font-size: 15px;
    color: var(--c-text-3);
}
.diagnosis-form {
    max-width: 640px;
    margin: 0 auto;
}
.form-row {
    margin-bottom: 22px;
}
.form-row label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 8px;
}
.form-row .req {
    color: #DC2626;
}
.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1.5px solid var(--c-border);
    border-radius: var(--r-sm);
    font-size: 15px;
    font-family: inherit;
    background: #fff;
    color: var(--c-text);
    transition: all var(--t);
    box-sizing: border-box;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-row textarea {
    resize: vertical;
    min-height: 96px;
}
.form-privacy {
    margin: 24px 0 28px;
}
.form-privacy .checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: 13px;
    color: var(--c-text-3);
    line-height: 1.6;
}
.form-privacy .checkbox input {
    width: 16px;
    height: 16px;
    margin-top: 2px;
    flex-shrink: 0;
    accent-color: var(--c-primary);
    cursor: pointer;
}
.btn-block {
    width: 100%;
    display: block;
    text-align: center;
}

.diagnosis-faq {
    margin-bottom: 24px;
}
.diagnosis-faq .section-head {
    text-align: center;
    margin-bottom: 40px;
}

@media (max-width: 900px) {
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
}
@media (max-width: 600px) {
    .diagnosis-form-wrap {
        padding: 28px 20px;
    }
    .form-head h2,
    .intro-col h2 {
        font-size: var(--f-xl);
    }
}
@media (max-width: 600px) {
    .feature-visual.brand-showcase {
        padding: 36px 28px 36px;
    }
    .brand-showcase img {
        max-height: 200px;
    }
    .brand-showcase-ring {
        width: 200px; height: 200px;
    }
    .brand-showcase-ring.ring-2 {
        width: 140px; height: 140px;
    }
    .brand-showcase-accent {
        left: 50%;
        transform: translateX(-50%);
        bottom: 16px;
    }
}

/* ==========================================================================
   安康等区域站通用样式
   ========================================================================== */

/* 卡片标签 */
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}
.card-tags span {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--c-primary);
    background: rgba(37,99,235,.06);
    border-radius: var(--r-full);
    line-height: 1.6;
}

/* 服务卡片编号 */
.card-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--c-primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

/* 步骤标签 */
.step-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: var(--r-full);
    margin-bottom: 10px;
}

/* 浅色版 geo-model-step */
.geo-model-step.light {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-md);
    padding: 28px 32px;
    transition: all var(--t);
    position: relative;
    overflow: hidden;
}
.geo-model-step.light:hover {
    border-color: var(--c-primary);
    box-shadow: 0 12px 32px -16px rgba(37,99,235,.15);
    transform: translateY(-2px);
}
.geo-model-step.light .step-num {
    color: rgba(37,99,235,.25);
    font-size: 36px;
    min-width: 52px;
}
.geo-model-step.light .step-body h3 {
    color: var(--c-text);
}
.geo-model-step.light .step-body p {
    color: var(--c-text-2);
}

/* CTA section */
.section-cta {
    padding: 80px 0;
}
.cta-box {
    max-width: 900px;
    margin: 0 auto;
    background: linear-gradient(135deg, #0B1A3A 0%, #111F44 50%, #0F2A5C 100%);
    border-radius: var(--r-lg);
    padding: 64px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 24px 60px -20px rgba(11,26,58,.35);
}
.cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(37,99,235,.15), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(6,182,212,.12), transparent 50%);
}
.cta-box > * {
    position: relative;
    z-index: 1;
}
.cta-box h2 {
    font-size: var(--f-2xl);
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    line-height: 1.3;
}
.cta-box p {
    font-size: 16px;
    color: rgba(255,255,255,.7);
    margin-bottom: 32px;
    line-height: 1.7;
}
.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.cta-actions .btn {
    margin: 0;
}

/* 返回顶部按钮 */
.float-btn.float-totop {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

@media (max-width: 600px) {
    .cta-box {
        padding: 40px 24px;
    }
    .cta-box h2 {
        font-size: var(--f-xl);
    }
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    .cta-actions .btn {
        width: 100%;
        max-width: 280px;
    }
}