/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #1B3A5F;
    --primary-dark: #122A45;
    --primary-light: #EEF2F7;
    --primary-accent: #2E547F;
    --text-main: #1D2129;
    --text-secondary: #4E5969;
    --text-tertiary: #86909C;
    --bg-gray: #F7F8FA;
    --border: #EDEFF2;
    --white: #FFFFFF;
    --shadow: 0 2px 16px rgba(27, 58, 95, 0.06);
    --shadow-hover: 0 8px 32px rgba(27, 58, 95, 0.12);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    color: var(--text-main);
    line-height: 1.65;
    background-color: var(--white);
    overflow-x: hidden;
}

html { scroll-behavior: smooth; }

/* ===== 导航栏 ===== */
.nav {
    position: fixed; top: 0; width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    z-index: 999; transition: all 0.3s ease;
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 32px; height: 68px;
    display: flex; justify-content: space-between; align-items: center;
}
.nav-logo { font-size: 17px; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; }
.nav-menu { display: flex; gap: 32px; list-style: none; }
.nav-menu a { text-decoration: none; color: var(--text-secondary); font-size: 14px; transition: color 0.3s; font-weight: 500; }
.nav-menu a:hover { color: var(--primary); }

/* 汉堡按钮（默认隐藏，移动端显示） */
.nav-toggle {
    display: none; flex-direction: column; justify-content: center; gap: 5px;
    width: 40px; height: 40px; background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span { display: block; height: 2px; width: 24px; background: var(--primary); border-radius: 2px; transition: all 0.3s; }
.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); }

/* ===== 通用容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.section { padding: 64px 0; }
.section-gray { background-color: var(--bg-gray); }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title .section-num {
    display: inline-block; padding: 4px 16px; background: var(--primary); color: var(--white);
    font-size: 13px; border-radius: 4px; margin-bottom: 16px; font-weight: 500;
}
.section-title h2 { font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 12px; letter-spacing: 0.5px; }
.section-title p { font-size: 16px; color: var(--text-secondary); font-weight: 400; text-wrap: balance; max-width: 900px; margin: 0 auto; line-height: 1.7; }
.title-line { width: 40px; height: 3px; background: var(--primary); border-radius: 2px; margin: 18px auto 0; }

/* 区块内子标题（统一间距，避免忽大忽小） */
.sub-title { text-align: center; font-size: 22px; font-weight: 700; color: var(--primary); margin: 48px 0 28px; }
.sub-desc { text-align: center; color: var(--text-secondary); font-size: 15px; margin-bottom: 28px; }

/* ===== 首屏 Hero ===== */
.hero {
    min-height: 100vh; padding-top: 68px;
    background: linear-gradient(135deg, #122A45 0%, #1B3A5F 50%, #2E547F 100%);
    display: flex; align-items: center; position: relative; overflow: hidden; color: var(--white);
}
.hero::before { content: ""; position: absolute; right: -150px; top: 10%; width: 600px; height: 600px; background: rgba(255, 255, 255, 0.04); border-radius: 50%; }
.hero::after { content: ""; position: absolute; left: -100px; bottom: -150px; width: 400px; height: 400px; background: rgba(255, 255, 255, 0.05); border-radius: 50%; }
.hero-wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1.2fr 1fr; gap: 80px; align-items: center; }
.hero-tag { display: inline-block; padding: 8px 20px; background: rgba(255, 255, 255, 0.15); border-radius: 4px; font-size: 14px; margin-bottom: 28px; backdrop-filter: blur(10px); font-weight: 500; letter-spacing: 1px; }
.hero h1 { font-size: 52px; font-weight: 700; line-height: 1.2; margin-bottom: 16px; letter-spacing: 2px; }
.hero h1 span { font-size: 32px; font-weight: 400; opacity: 0.88; margin-left: 8px; }
.hero-slogan { font-size: 26px; font-weight: 500; margin-bottom: 32px; opacity: 0.95; letter-spacing: 1px; }
.hero-desc { font-size: 15px; line-height: 1.75; opacity: 0.85; margin-bottom: 32px; max-width: 540px; }
.hero-hook { font-size: 17px; line-height: 1.6; font-weight: 500; margin: 0 0 24px; max-width: 560px; color: #fff; opacity: 0.96; border-left: 3px solid rgba(255, 255, 255, 0.7); padding-left: 16px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 36px; margin-bottom: 40px; }
.hero-stats .stat { display: flex; flex-direction: column; }
.hero-stats .stat strong { font-size: 30px; font-weight: 700; line-height: 1.1; }
.hero-stats .stat strong small { font-size: 15px; font-weight: 500; margin-left: 2px; opacity: 0.85; }
.hero-stats .stat span { font-size: 13px; opacity: 0.8; margin-top: 6px; letter-spacing: 0.5px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary { padding: 14px 36px; background: var(--white); color: var(--primary); text-decoration: none; border-radius: 4px; font-weight: 600; transition: all 0.3s; font-size: 15px; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15); }
.btn-outline { padding: 14px 36px; border: 1.5px solid rgba(255, 255, 255, 0.6); color: var(--white); text-decoration: none; border-radius: 4px; font-weight: 500; transition: all 0.3s; font-size: 15px; }
.btn-outline:hover { background: rgba(255, 255, 255, 0.12); }
.hero-photo-wrap { display: flex; justify-content: center; }
.hero-photo {
    width: 310px; height: 420px; border-radius: 8px; background: var(--white);
    border: 4px solid rgba(255, 255, 255, 0.5); overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25); display: flex; align-items: center; justify-content: center;
}
.hero-photo img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }

/* ===== 01 顾问简介 ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.about-card { background: var(--white); padding: 40px 36px; border-radius: 8px; box-shadow: var(--shadow); border-top: 4px solid var(--primary); }
.about-card h3 { font-size: 22px; margin-bottom: 20px; color: var(--primary); font-weight: 700; }
.about-card p { color: var(--text-secondary); margin-bottom: 14px; line-height: 1.7; font-size: 15px; }
.qualification-list { list-style: none; }
.qualification-list li { padding: 7px 0; border-bottom: 1px solid var(--border); color: var(--text-secondary); font-size: 15px; line-height: 1.6; padding-left: 16px; position: relative; }
.qualification-list li:last-child { border-bottom: none; }
.qualification-list li::before { content: "•"; color: var(--primary); font-weight: 700; position: absolute; left: 0; font-size: 16px; }
.position-highlight { background: var(--primary); color: var(--white); padding: 14px 20px; border-radius: 4px; font-size: 16px; font-weight: 600; text-align: center; margin-bottom: 24px; letter-spacing: 1px; }
.position-list { list-style: none; }
.position-list li { padding: 7px 0; color: var(--text-secondary); font-size: 14px; line-height: 1.65; padding-left: 16px; position: relative; border-bottom: 1px dashed var(--border); }
.position-list li:last-child { border-bottom: none; }
.position-list li::before { content: "•"; color: var(--primary); font-weight: 700; position: absolute; left: 0; font-size: 16px; }
.position-list li strong { color: var(--primary); font-weight: 600; }

/* ===== 行业交流（上下结构：文字上、图片下） ===== */
.industry-grid { display: flex; flex-direction: column; gap: 24px; align-items: center; }
.industry-text p { font-size: 15px; line-height: 1.85; color: var(--text-secondary); margin: 0; text-align: center; text-wrap: balance; }
.industry-figure { border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); background: var(--bg-gray); width: 100%; }
.industry-figure img { width: 100%; height: auto; display: block; }

.service-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 0; }
.service-card { background: var(--white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); transition: all 0.35s; }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.service-header { padding: 28px 24px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: var(--white); }
.service-header h3 { font-size: 20px; margin-bottom: 6px; font-weight: 600; }
.service-header p { font-size: 13px; opacity: 0.85; }
.service-body { padding: 28px 24px; }
.service-body ul { list-style: none; }
.service-body li { padding: 8px 0; color: var(--text-secondary); font-size: 14px; display: flex; align-items: center; gap: 10px; }
.service-body li::before { content: "•"; color: var(--primary); font-weight: 700; font-size: 16px; }

.testimonials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 0; }
.testimonial-card { background: var(--white); padding: 32px 28px 28px; border-radius: 8px; box-shadow: var(--shadow); position: relative; }
.testimonial-card::before { content: '"'; position: absolute; top: 8px; left: 20px; font-size: 64px; color: var(--primary-light); font-family: serif; line-height: 1; }
.testimonial-text { position: relative; z-index: 2; font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.testimonial-author { font-size: 13px; color: var(--text-tertiary); text-align: right; font-weight: 500; }

/* ===== 02 企业文化洞察 ===== */
.insight-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 56px; }
.insight-card { background: var(--white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); transition: all 0.3s; }
.insight-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.insight-title { background: var(--primary); color: var(--white); padding: 18px 24px; font-size: 16px; font-weight: 600; line-height: 1.6; }
.insight-card p { padding: 18px 24px; color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin: 0; }

.four-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 56px; }
.step-card { text-align: center; padding: 36px 24px; background: var(--white); border-radius: 8px; box-shadow: var(--shadow); transition: all 0.3s; }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-icon { width: 80px; height: 80px; background: var(--primary); border-radius: 50% 50% 50% 0; transform: rotate(-45deg); margin: 0 auto 24px; display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 32px; font-weight: 700; }
.step-icon span { transform: rotate(45deg); }
.step-card h4 { font-size: 18px; color: var(--primary); margin-bottom: 8px; font-weight: 600; }
.step-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

.landscape { background: var(--white); padding: 48px; border-radius: 8px; box-shadow: var(--shadow); margin-bottom: 56px; }
.landscape h3 { font-size: 22px; margin-bottom: 36px; text-align: center; font-weight: 700; color: var(--primary); }
.landscape h3 span { color: var(--primary); }
.landscape-layer { margin-bottom: 24px; }
.landscape-content { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-left: 0; }
.landscape-item { padding: 16px 20px; background: var(--bg-gray); border-radius: 6px; border-left: 3px solid var(--primary); }
.landscape-item h5 { font-size: 15px; color: var(--primary); margin-bottom: 8px; font-weight: 600; }
.landscape-item ul { list-style: none; }
.landscape-item li { font-size: 13px; color: var(--text-secondary); padding: 3px 0; padding-left: 12px; position: relative; }
.landscape-item li::before { content: "·"; color: var(--primary); position: absolute; left: 0; font-weight: 700; }
.landscape-full { margin-left: 0; padding: 16px 24px; background: var(--primary); color: var(--white); border-radius: 6px; text-align: center; font-weight: 500; font-size: 15px; }

/* ===== 03 服务项目概况 ===== */
.client-logos { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; margin-bottom: 56px; }
.logo-item { position: relative; background: var(--white); height: 72px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-weight: 600; color: var(--text-secondary); box-shadow: var(--shadow); font-size: 13px; transition: all 0.3s; padding: 0 12px; text-align: center; overflow: hidden; }
.logo-item:hover { color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.logo-item img { max-height: 44px; max-width: 100%; object-fit: contain; }
.logo-item .ph { display: none; }
.logo-item.show-ph .ph { display: block; }
.logo-item.show-ph img { display: none; }

.client-logos-img { text-align: center; margin: 0 auto 48px; }
.client-logos-img img { width: 100%; height: auto; border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,0.08); background: var(--white); padding: 20px 24px; }

.cases-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 32px; }
.case-detail { background: var(--white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); margin-bottom: 36px; transition: all 0.3s; display: flex; flex-direction: column; }
.cases-grid .case-detail { margin-bottom: 0; }
.case-detail:hover { box-shadow: var(--shadow-hover); }

/* 案例：先文字后配图（图片在下） */
.case-content { order: 1; }
.case-image { order: 2; }

/* 统一案例图尺寸：单栏卡片限高，网格卡用固定比例+限高 */
.case-image { position: relative; width: 100%; background: var(--bg-gray); overflow: hidden; display: flex; align-items: center; justify-content: center; }
/* 单栏案例（01/02，不在grid内）限高 */
.case-detail:not(.cases-grid .case-detail) .case-image {
    max-height: 320px;
}
/* 网格内案例（03~08）：固定比例+限高，与单栏视觉等宽 */
.cases-grid .case-image {
    aspect-ratio: 16 / 9;
    max-height: 220px;
}
.case-image .ph { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; color: var(--text-tertiary); font-size: 13px; padding: 16px; line-height: 1.6; }
.case-image img { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.case-content { padding: 28px 36px; flex: 1; }
.cases-grid .case-content { padding: 22px 26px; }
.case-tag { display: inline-block; padding: 3px 10px; background: var(--primary-light); color: var(--primary); font-size: 12px; border-radius: 4px; margin-bottom: 10px; font-weight: 500; }
.case-content h3 { font-size: 20px; color: var(--primary); margin-bottom: 12px; font-weight: 700; }
.cases-grid .case-content h3 { font-size: 17px; }
.case-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; }
.cases-grid .case-content p { font-size: 13px; }
.case-output { background: var(--bg-gray); padding: 16px 20px; border-radius: 6px; margin-top: 16px; }
.case-output h5 { font-size: 13px; color: var(--primary); margin-bottom: 8px; font-weight: 600; }
.case-result { font-size: 13.5px; line-height: 1.7; color: var(--primary); font-weight: 500; margin-bottom: 10px; padding-left: 10px; border-left: 3px solid var(--primary); }
.case-output ul { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 16px; }
.case-output li { font-size: 13px; color: var(--text-secondary); padding-left: 12px; position: relative; }
.case-output li::before { content: "✓"; color: var(--primary); position: absolute; left: 0; font-size: 12px; }

.process-section { margin-top: 0; margin-bottom: 56px; }
.process-steps { display: flex; justify-content: space-between; position: relative; max-width: 1000px; margin: 0 auto; }
.process-steps::before { content: ""; position: absolute; top: 36px; left: 10%; right: 10%; height: 2px; background: var(--border); z-index: 1; }
.process-step { position: relative; z-index: 2; text-align: center; width: 22%; }
.process-step-num { width: 72px; height: 72px; background: var(--primary); border: none; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; color: var(--white); font-weight: 700; font-size: 22px; box-shadow: 0 4px 16px rgba(27,58,95,0.25); }
.process-step h4 { font-size: 16px; margin-bottom: 10px; color: var(--primary); font-weight: 600; }
.process-step ul { list-style: none; text-align: left; display: inline-block; }
.process-step li { font-size: 13px; color: var(--text-secondary); padding: 3px 0; padding-left: 12px; position: relative; }
.process-step li::before { content: "·"; color: var(--primary); position: absolute; left: 0; font-weight: 700; }

/* ===== CTA 结尾 ===== */
.cta-section { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); color: var(--white); text-align: center; padding: 52px 32px; border-radius: 8px; margin-top: 36px; }
.cta-qrs { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.cta-qr-item { display: flex; flex-direction: column; align-items: center; }
.cta-qr-label { font-size: 13px; opacity: 0.9; margin-top: 12px; font-weight: 500; letter-spacing: 0.5px; }
.cta-qrcode { display: inline-block; text-align: center; position: relative; }
.cta-qrcode .qr-ph { width: 120px; height: 120px; border-radius: 8px; background: rgba(255,255,255,0.15); display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 12px; padding: 10px; line-height: 1.5; }
.cta-qrcode img { width: 120px; height: 120px; border-radius: 8px; background: var(--white); padding: 8px; position: relative; z-index: 1; }
.cta-slogan { font-size: 14px; font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif; margin-top: 16px; font-weight: 400; letter-spacing: 1px; opacity: 0.96; }
.cta-contact { font-size: 14px; opacity: 0.95; margin-top: 16px; font-weight: 500; }
.cta-sub { font-size: 13px; opacity: 0.85; margin-top: 4px; font-weight: 400; }
.cta-hook { font-size: 13px; opacity: 0.8; margin-top: 14px; letter-spacing: 0.5px; }
.cta-contact a { color: #fff; text-decoration: underline; }

.footer { background: #1D2129; color: var(--text-tertiary); padding: 32px 0; text-align: center; font-size: 13px; }

/* ===== 首页自诊区 ===== */
.diagnosis-zone { padding: 56px 0 64px; background: var(--white); }

/* 信任墙 */
.trust-wall { text-align: center; margin-bottom: 48px; }
.trust-label { font-size: 16px; color: var(--text-secondary); margin-bottom: 20px; }
.trust-label strong { color: var(--primary); font-size: 22px; }
.trust-logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.trust-chip { padding: 8px 20px; background: var(--primary-light); color: var(--primary); font-size: 14px; font-weight: 600; border-radius: 4px; letter-spacing: 0.5px; }

/* 痛点卡片 */
.pain-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.pain-card { background: var(--white); border-radius: 8px; padding: 32px 28px; box-shadow: var(--shadow); text-decoration: none; color: inherit; transition: all 0.35s; border-top: 4px solid var(--primary); display: flex; flex-direction: column; }
.pain-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.pain-card-strategy { border-top-color: #1B3A5F; }
.pain-card-mechanism { border-top-color: #2E547F; }
.pain-card-perception { border-top-color: #4A7BA8; }
.pain-card-head { margin-bottom: 20px; }
.pain-layer-tag { display: inline-block; padding: 4px 12px; background: var(--primary-light); color: var(--primary); font-size: 12px; font-weight: 600; border-radius: 4px; margin-bottom: 12px; letter-spacing: 1px; }
.pain-card-head h3 { font-size: 22px; color: var(--primary); font-weight: 700; }
.pain-symptoms { list-style: none; margin-bottom: 20px; flex: 1; }
.pain-symptoms li { padding: 6px 0; font-size: 14px; color: var(--text-secondary); padding-left: 16px; position: relative; line-height: 1.6; }
.pain-symptoms li::before { content: "·"; color: var(--primary); font-weight: 700; position: absolute; left: 0; font-size: 18px; line-height: 1; }
.pain-card-link { font-size: 14px; color: var(--primary); font-weight: 600; margin-top: auto; }

/* 行动入口 */
.hero-action { text-align: center; display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.hero-action-hint { font-size: 16px; color: var(--text-secondary); }
.btn-diagnosis { display: inline-block; padding: 16px 40px; background: var(--primary); color: var(--white); text-decoration: none; border-radius: 4px; font-weight: 600; font-size: 16px; transition: all 0.3s; box-shadow: 0 4px 16px rgba(27,58,95,0.2); }
.btn-diagnosis:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(27,58,95,0.3); background: var(--primary-dark); }

/* ===== 02 服务内容：三层架构 ===== */
.services-intro { text-align: center; font-size: 16px; color: var(--text-secondary); margin-bottom: 48px; line-height: 1.7; }

.service-layer { background: var(--white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); margin-bottom: 20px; }
.service-layer-header { display: flex; align-items: center; gap: 20px; padding: 22px 28px; color: var(--white); }
.service-layer-strategy .service-layer-header { background: linear-gradient(135deg, #122A45 0%, #1B3A5F 100%); }
.service-layer-mechanism .service-layer-header { background: linear-gradient(135deg, #1B3A5F 0%, #2E547F 100%); }
.service-layer-perception .service-layer-header { background: linear-gradient(135deg, #2E547F 0%, #4A7BA8 100%); }

.layer-tag { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; background: rgba(255,255,255,0.2); border-radius: 8px; font-size: 24px; font-weight: 700; flex-shrink: 0; }
.layer-title-block h3 { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.layer-title-block p { font-size: 14px; opacity: 0.85; }

.service-layer-body { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; padding: 20px 28px; }
.layer-content-block h4 { font-size: 15px; color: var(--primary); font-weight: 600; margin-bottom: 14px; }
.layer-service-list { list-style: none; }
.layer-service-list li { padding: 7px 0; font-size: 14px; color: var(--text-secondary); padding-left: 16px; position: relative; line-height: 1.6; }
.layer-service-list li::before { content: "•"; color: var(--primary); font-weight: 700; position: absolute; left: 0; font-size: 16px; }
.layer-case-links { list-style: none; }
.layer-case-links li { padding: 7px 0; font-size: 14px; color: var(--text-secondary); line-height: 1.6; padding-left: 16px; position: relative; }
.layer-case-links li::before { content: "•"; color: var(--primary); font-weight: 700; position: absolute; left: 0; font-size: 16px; }
.layer-case-links li a { color: var(--primary); text-decoration: none; border-bottom: 1px dashed var(--primary-accent); padding-bottom: 2px; transition: all 0.3s; }
.layer-case-links li a:hover { color: var(--primary-dark); border-bottom-style: solid; }
.layer-case-note { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

.service-layer-cta { display: flex; align-items: center; justify-content: space-between; padding: 20px 32px; background: var(--primary-light); border-top: 1px solid var(--border); gap: 16px; flex-wrap: wrap; }
.service-layer-cta span { font-size: 14px; color: var(--text-secondary); }
.btn-mini-cta { display: inline-block; padding: 10px 24px; background: var(--primary); color: var(--white); text-decoration: none; border-radius: 4px; font-size: 14px; font-weight: 600; transition: all 0.3s; white-space: nowrap; }
.btn-mini-cta:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* 方法论附录 */
.method-appendix { background: var(--white); border-radius: 8px; padding: 44px 36px; text-align: center; box-shadow: var(--shadow); }
.method-appendix h4 { font-size: 18px; color: var(--primary); font-weight: 700; margin-bottom: 36px; letter-spacing: 1px; }

/* 方法论附录各部分 */
.method-part { margin-bottom: 36px; }
.method-part-title {
    font-size: 15px; color: var(--primary); font-weight: 700; letter-spacing: 0.5px;
    margin-bottom: 20px; text-align: center;
}
.method-steps {
    display: flex; justify-content: center; align-items: stretch; gap: 0; flex-wrap: wrap;
}
.method-step {
    flex: 1; min-width: 150px; max-width: 200px; padding: 24px 16px; background: var(--primary-light); border-radius: 8px; margin: 6px;
    display: flex; flex-direction: column; align-items: center; transition: all 0.3s;
}
.method-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.method-step-num {
    width: 44px; height: 44px; background: var(--primary); color: var(--white);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: 700; margin-bottom: 12px;
}
.method-step-label { font-size: 15px; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
.method-step p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; text-align: center; }
.method-step-arrow {
    display: flex; align-items: center; font-size: 22px; color: var(--primary-accent); font-weight: 700; padding: 0 4px;
}

/* 落地阵地 */
.method-pillars {
    display: flex; justify-content: center; align-items: stretch; gap: 12px; flex-wrap: wrap;
}
.method-pillar {
    flex: 1; min-width: 200px; max-width: 300px; padding: 20px; background: var(--bg-gray); border-radius: 8px;
    border-top: 3px solid var(--primary); text-align: left;
}
.method-pillar-title { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.method-pillar p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin: 0; }
.method-multiply { font-size: 22px; color: var(--text-tertiary); font-weight: 700; display: flex; align-items: center; }

/* 落地保障 */
.method-guarantees {
    display: flex; justify-content: center; align-items: center; gap: 12px; flex-wrap: wrap;
}
.method-guarantee {
    padding: 10px 24px; background: var(--primary); color: var(--white); border-radius: 4px;
    font-size: 14px; font-weight: 600; letter-spacing: 0.5px;
}
.method-guarantee-divider { font-size: 24px; color: var(--text-tertiary); font-weight: 700; }

/* 独孤九剑 */
.method-nine {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; max-width: 760px; margin: 0 auto;
}
.method-nine-item {
    padding: 16px 20px; background: var(--bg-gray); border-radius: 8px; border-left: 3px solid var(--primary);
    font-size: 15px; font-weight: 600; color: var(--primary); display: flex; align-items: center; gap: 10px;
}
.method-nine-num {
    display: flex; align-items: center; justify-content: center; width: 28px; height: 28px;
    background: var(--primary); color: var(--white); border-radius: 50%; font-size: 13px; font-weight: 700; flex-shrink: 0;
}

/* 验证场景 */
.method-exp { font-size: 14px; color: var(--text-secondary); line-height: 1.7; text-align: center; margin-bottom: 20px; }
.method-scenarios { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.method-scenario-card { padding: 20px 16px; background: var(--primary-light); border-radius: 8px; border-left: 3px solid var(--primary); text-align: left; }
.method-scenario-name { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.method-scenario-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin: 0; }

/* 底层逻辑金句 */
.method-logic {
    font-size: 17px; font-weight: 700; color: var(--primary); text-align: center;
    padding: 24px 32px; background: var(--primary-light); border-radius: 8px;
    margin: 32px 0 20px; line-height: 1.7; letter-spacing: 0.5px;
}
.method-cta-text { font-size: 15px; color: var(--text-secondary); text-align: center; margin-top: 8px; }

/* ===== 03 案例筛选标签 ===== */
.case-filters { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-bottom: 40px; }
.case-filter-tag { padding: 8px 20px; background: var(--white); border: 1.5px solid var(--border); color: var(--text-secondary); font-size: 14px; font-weight: 500; border-radius: 4px; cursor: pointer; transition: all 0.3s; user-select: none; }
.case-filter-tag:hover { border-color: var(--primary); color: var(--primary); }
.case-filter-tag.active { background: var(--primary); color: var(--white); border-color: var(--primary); }

.case-tags-row { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
.case-filter-chip { padding: 2px 8px; background: var(--primary-light); color: var(--primary-accent); font-size: 11px; font-weight: 500; border-radius: 3px; }

/* ===== 04 联系合作 ===== */
.cooperation-methods { margin-bottom: 40px; }
.coop-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.coop-card { background: var(--white); border-radius: 8px; padding: 36px 28px; text-align: center; box-shadow: var(--shadow); transition: all 0.3s; border-bottom: 4px solid var(--primary); }
.coop-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.coop-icon { font-size: 14px; color: var(--primary); letter-spacing: 4px; margin-bottom: 16px; font-weight: 700; }
.coop-card h4 { font-size: 20px; color: var(--primary); font-weight: 700; margin-bottom: 10px; }
.coop-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* 问诊入口 */
.diagnosis-cta-box { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); border-radius: 8px; padding: 48px 32px; text-align: center; color: var(--white); }
.diagnosis-cta-content h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.diagnosis-cta-content p { font-size: 15px; opacity: 0.9; margin-bottom: 8px; }
.diagnosis-promise { font-size: 14px !important; opacity: 0.8; }
.diagnosis-cta-box .cta-qrs { margin-top: 32px; }

/* 客户证言入口 */
.testimonial-entry { text-align: center; margin-bottom: 40px; }
.testimonial-entry a { display: inline-block; padding: 12px 28px; background: var(--primary-light); color: var(--primary); font-size: 15px; font-weight: 600; text-decoration: none; border-radius: 4px; transition: all 0.3s; border: 1px solid transparent; }
.testimonial-entry a:hover { background: var(--primary); color: var(--white); }

/* 服务层核心目的 + 典型场景 */
.layer-purpose { padding: 18px 28px 6px; }
.layer-purpose-inline { display: flex; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.layer-purpose-label { display: inline-block; font-size: 13px; color: var(--primary); font-weight: 700; white-space: nowrap; padding: 4px 12px; background: var(--primary-light); border-radius: 4px; flex-shrink: 0; }
.layer-purpose-text { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }
.layer-scenarios-inline { display: flex; align-items: flex-start; gap: 12px; margin-top: 4px; flex-wrap: wrap; }
.layer-scenarios { display: flex; align-items: center; gap: 12px; padding: 16px 32px; background: var(--bg-gray); border-top: 1px solid var(--border); flex-wrap: wrap; }
.layer-scenarios-label { font-size: 13px; color: var(--primary); font-weight: 700; white-space: nowrap; padding: 4px 12px; background: var(--primary-light); border-radius: 4px; }
.layer-scenarios-text { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* 联系页决策引导 */
.contact-decision { text-align: center; margin-bottom: 48px; }
.decision-list { max-width: 640px; margin: 0 auto 20px; text-align: left; }
.decision-item { padding: 10px 0; font-size: 15px; color: var(--text-secondary); line-height: 1.7; display: flex; gap: 10px; align-items: flex-start; }
.decision-arrow { color: var(--primary); font-weight: 700; flex-shrink: 0; }
.decision-note { font-size: 15px; color: var(--primary); font-weight: 600; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        display: flex; flex-direction: column; gap: 0;
        position: absolute; top: 68px; left: 0; right: 0;
        background: var(--white); border-bottom: 1px solid var(--border);
        max-height: 0; overflow: hidden; transition: max-height 0.35s ease; box-shadow: var(--shadow);
    }
    .nav-menu.open { max-height: 360px; }
    .nav-menu li { border-top: 1px solid var(--border); }
    .nav-menu a { display: block; padding: 16px 32px; }

    .hero-wrap { grid-template-columns: 1fr; gap: 48px; text-align: center; }
    .hero-desc { margin: 0 auto 40px; }
    .hero-hook { margin: 0 auto 24px; border-left: none; border-top: 3px solid rgba(255, 255, 255, 0.7); padding: 14px 0 0; }
    .hero-stats { justify-content: center; gap: 24px 32px; margin-bottom: 36px; }
    .hero-stats .stat { align-items: center; }
    .hero-btns { justify-content: center; }
    .hero-photo { width: 260px; height: 355px; }
    .hero h1 { font-size: 36px; }
    .hero h1 span { font-size: 24px; }
    .hero-slogan { font-size: 18px; }
    .about-grid, .service-cards, .testimonials, .four-steps, .cases-grid, .insight-cards { grid-template-columns: 1fr; }
    .industry-grid { gap: 20px; }
    .sub-title { margin: 48px 0 24px; }
    .sub-desc { margin-bottom: 24px; }
    .landscape-content { grid-template-columns: 1fr; }
    .client-logos { grid-template-columns: repeat(3, 1fr); }
    .process-steps { flex-direction: column; gap: 40px; align-items: center; }
    .process-steps::before { display: none; }
    .process-step { width: 100%; max-width: 300px; }
    .cta-slogan { font-size: 14px; }
    .cta-qrs { gap: 28px; }
    .cta-qrcode img, .cta-qrcode .qr-ph { width: 100px; height: 100px; }
    .section-title h2 { font-size: 24px; }
    .container { padding: 0 20px; }
    .section { padding: 64px 0; }
    .landscape { padding: 32px 24px; }
    .case-content { padding: 24px 20px; }
    .cases-grid .case-image {
        aspect-ratio: 16 / 9;
        max-height: 180px;
    }

    /* 新组件响应式 */
    .pain-cards { grid-template-columns: 1fr; }
    .pain-card { padding: 24px 20px; }
    .trust-logos { gap: 8px; }
    .trust-chip { padding: 6px 14px; font-size: 13px; }
    .btn-diagnosis { padding: 14px 28px; font-size: 14px; }

    .service-layer-header { padding: 20px 24px; gap: 14px; }
    .layer-tag { width: 40px; height: 40px; font-size: 20px; }
    .layer-title-block h3 { font-size: 18px; }
    .service-layer-body { grid-template-columns: 1fr; gap: 24px; padding: 24px; }
    .service-layer-cta { flex-direction: column; text-align: center; gap: 12px; padding: 20px 24px; }
    .method-grid { gap: 24px; }
    .method-appendix { padding: 28px 20px; }
    .method-steps { flex-direction: column; align-items: center; gap: 8px; }
    .method-step { width: 100%; max-width: 320px; min-width: auto; margin: 0; }
    .method-step-arrow { transform: rotate(90deg); padding: 0; }
    .method-pillars { flex-direction: column; align-items: center; }
    .method-pillar { width: 100%; max-width: 320px; }
    .method-multiply { display: none; }
    .method-guarantees { flex-direction: column; }
    .method-guarantee-divider { display: none; }
    .method-nine { grid-template-columns: repeat(2, 1fr); }
    .layer-purpose { padding: 16px 20px 4px; }
    .layer-purpose-inline { flex-direction: column; gap: 8px; }
    .layer-scenarios-inline { flex-direction: column; gap: 8px; }
    .method-scenarios { grid-template-columns: 1fr; }
    .method-logic { font-size: 15px; padding: 20px 16px; }
    .layer-scenarios { padding: 14px 20px; flex-direction: column; align-items: flex-start; gap: 8px; }
    .contact-decision { margin-bottom: 36px; }

    .coop-cards { grid-template-columns: 1fr; }
    .coop-card { padding: 28px 20px; }
    .diagnosis-cta-box { padding: 32px 20px; }
    .diagnosis-cta-content h3 { font-size: 20px; }
}