:root {
  --primary-blue: #0044ff;
  --accent-purple: #cfc0f7;
  --bg-dark: #030305;
  --bg-darker: #0a0a0f;
  --bg-light: #ffffff;
  --bg-gray: #f7f8fa;
  --text-dark: #111111;
  --text-gray: #555555;
  --text-light: #ffffff;
  --geo-cyan: #00E5FF;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
  font-family: var(--font-sans);
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.service-main { overflow: hidden; }
.container { max-width: 1440px; margin: 0 auto; padding: 0 20px; }

.service-section { padding: 80px 0; position: relative; z-index: 2; } 

.overlap-top {
  border-bottom-left-radius: 48px;
  border-bottom-right-radius: 48px;
  position: relative;
  padding-bottom: 128px;
  margin-bottom: -48px;
}
.overlap-bottom {
  padding-top: 128px;
  position: relative;
}

.bg-light { background-color: var(--bg-light); }
.bg-gray { background-color: var(--bg-gray); }
.bg-dark { background-color: var(--bg-dark); }
.bg-darker { background-color: var(--bg-darker); }

.section-title { font-size: 38px; font-weight: 400; text-align: center; margin-bottom: 60px; color: var(--text-dark); }
.theme-dark .section-title, .bg-dark .section-title, .bg-darker .section-title { color: var(--text-light); }
.section-subtitle { text-align: center; color: #666; font-size: 16px; margin-bottom: 60px; max-width: 800px; margin-left: auto; margin-right: auto; line-height: 1.6; font-weight: 400; }
.theme-dark .section-subtitle, .bg-dark .section-subtitle, .bg-darker .section-subtitle { color: #a0a0a0; }

.hero-section { background-color: var(--bg-dark); color: #fff; padding: 180px 0 60px; background-image: radial-gradient(circle at top right, rgba(0, 68, 255, 0.15) 0%, transparent 50%); }
.hero-split-layout { display: flex; justify-content: space-between; align-items: flex-start; gap: 80px; margin-bottom: 40px; }
.hero-left { flex: 0 0 40%; position: sticky; top: 120px; }
.hero-left h1 { font-size: 48px; font-weight: 400; line-height: 1.3; margin: 0; background: linear-gradient(135deg, #fff 0%, #cfc0f7 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-right { flex: 1; display: flex; flex-direction: column; gap: 30px; }
.hero-right p { font-size: 18px; line-height: 1.8; color: #a0a0a0; margin: 0; }
.hero-actions { display: flex; flex-direction: column; gap: 20px; }

.btn-creative { display: inline-flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 32px; background-color: var(--primary-blue); border-radius: 99px; color: #fff; text-decoration: none; font-size: 16px; font-weight: 400; border: 1px solid var(--primary-blue); overflow: hidden; transition: all 0.4s ease; width: fit-content; }
.btn-creative:hover { box-shadow: 0 10px 20px rgba(0, 68, 255, 0.3); transform: translateY(-2px); color: #fff;}
.btn-text { position: relative; display: inline-block; overflow: hidden; }
.btn-text span { display: inline-block; transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.btn-text::after { content: attr(data-text); position: absolute; top: 150%; left: 0; width: 100%; text-align: center; transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.btn-creative:hover .btn-text span { transform: translateY(-150%); }
.btn-creative:hover .btn-text::after { transform: translateY(-150%); }
.btn-icon { position: relative; display: inline-flex; width: 20px; height: 20px; overflow: hidden; }
.btn-icon svg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.05s; }
.arrow-out { transform: translate(0, 0); }
.arrow-in { transform: translate(-150%, 150%); }
.btn-creative:hover .arrow-out { transform: translate(150%, -150%); }
.btn-creative:hover .arrow-in { transform: translate(0, 0); }

.trust-badges { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; color: #888; }
.trust-badges span { display: flex; align-items: center; gap: 6px; }
.trust-badges span::before { content: '•'; color: var(--primary-blue); font-size: 18px; font-weight: bold; }
.trust-badges.cyan span::before { color: var(--geo-cyan); }

/* ================== Web 专属模块 ================== */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.pain-card { background: #fff; border: 1px solid #eaeaea; border-radius: 12px; padding: 40px; box-shadow: 0 10px 30px rgba(0,0,0,0.03); display: flex; flex-direction: column; transition: box-shadow 0.3s ease; }
.pain-card:hover { box-shadow: 0 20px 40px rgba(0,0,0,0.08); }
.pain-pill { align-self: flex-start; background: var(--primary-blue); color: #fff; font-size: 14px; padding: 4px 12px; border-radius: 50px; margin-bottom: 24px; font-weight: 400; }
.pain-prob { font-size: 24px; color: #999; line-height: 1.5; margin-bottom: 30px; font-weight: 400; }
.pain-prob strong { color: #333; font-weight: 400; }
.pain-transition { font-size: 14px; color: #666; margin-bottom: 16px; }
.pain-sol { font-size: 22px; color: #111; line-height: 1.5; margin-bottom: 40px; flex: 1; font-weight: 400; }
.pain-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid #f0f0f0; padding-top: 20px; font-size: 15px; color: var(--primary-blue); }
.pain-footer-icon { width: 24px; height: 24px; background: var(--primary-blue); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; }

.srv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.srv-card-v2 { background: #fff; border-radius: 12px; padding: 40px; box-shadow: 0 10px 30px rgba(0,0,0,0.02); transition: transform 0.3s ease; overflow: hidden; }
.srv-card-v2:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0,0,0,0.06); }
.srv-card-v2.highlight { background: var(--primary-blue); color: #fff; }
.srv-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; }
.srv-cat { font-size: 12px; letter-spacing: 1px; color: #888; font-weight: 400; }
.srv-card-v2.highlight .srv-cat { color: rgba(255,255,255,0.8); }
.srv-arrow { color: var(--primary-blue); display: flex; align-items: center; }
.srv-card-v2.highlight .srv-arrow { color: #fff; }
.srv-icon { margin-bottom: 30px; }
.srv-icon svg { width: 60px; height: 60px; stroke: var(--primary-blue); fill: none; stroke-width: 1.5; }
.srv-card-v2.highlight .srv-icon svg { stroke: #fff; }
.srv-card-v2 h3 { font-size: 22px; color: #111; margin-bottom: 16px; line-height: 1.4; font-weight: 400; }
.srv-card-v2.highlight h3 { color: #fff; }
.srv-card-v2 p { font-size: 15px; color: #666; line-height: 1.6; }
.srv-card-v2.highlight p { color: rgba(255,255,255,0.9); }

.process-nav-wrapper { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 60px; }
.nav-arrow { background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; opacity: 0.5; transition: opacity 0.3s; padding: 0 10px; margin-bottom: 20px;}
.nav-arrow:hover { opacity: 1; }
.process-tabs { position: relative; display: flex; gap: 40px; overflow-x: auto; scrollbar-width: none; flex: 1; justify-content: center; padding-bottom: 20px; }
.process-tabs::-webkit-scrollbar { display: none; }
.ptab { font-size: 16px; color: #666; cursor: pointer; transition: color 0.3s; white-space: nowrap; font-weight: 400; }
.ptab:hover { color: #ccc; }
.ptab.active { color: #fff; }
.tab-slider { position: absolute; bottom: 0; left: 0; height: 3px; background: linear-gradient(90deg, #cfc0f7, var(--primary-blue)); border-radius: 3px; transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), width 0.4s cubic-bezier(0.25, 1, 0.5, 1); }
.process-panel { display: none; gap: 60px; align-items: center; animation: fadeIn 0.5s ease forwards; }
.process-panel.active { display: flex; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.p-panel-img { flex: 1; height: 360px; background: rgba(255,255,255,0.05); border-radius: 16px; overflow: hidden; position: relative; display: flex; align-items: center; justify-content: center; }
.p-panel-img::after { content: ''; position: absolute; width: 200px; height: 200px; background: var(--primary-blue); filter: blur(80px); opacity: 0.3; }
.p-panel-text { flex: 1; }
.p-panel-text h2 { font-size: 36px; margin-bottom: 24px; color: #fff; font-weight: 400; }
.p-panel-text p { font-size: 16px; color: #a0a0a0; line-height: 1.8; }

.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; background: var(--bg-darker); border: 2px solid rgba(255,255,255,0.15); border-radius: 36px; overflow: hidden; }
.pricing-card { padding: 60px 40px; border-right: 2px solid rgba(255,255,255,0.15); position: relative; }
.pricing-card:last-child { border-right: none; }
.pricing-card.highlight { background: linear-gradient(180deg, rgba(207, 192, 247, 0.05) 0%, transparent 100%); }
.pricing-card.highlight::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: var(--accent-purple); }
.pricing-card h3 { font-size: 24px; margin-bottom: 10px; color: #fff; font-weight: 400; }
.pricing-card p { font-size: 14px; color: #777; margin-bottom: 40px; line-height: 1.5; min-height: 42px; }
.btn-price { display: block; text-align: center; padding: 16px; border-radius: 50px; background: rgba(255,255,255,0.05); color: #fff; text-decoration: none; transition: background 0.3s; margin-bottom: 40px; font-weight: 400; }
.btn-price:hover { background: rgba(255,255,255,0.1); }
.pricing-card.highlight .btn-price { background: #ff5722; color: #fff; }
.pricing-card.highlight .btn-price:hover { background: #e64a19; }
.price-features { list-style: none; padding: 0; margin: 0; }
.price-features li { display: flex; align-items: center; gap: 12px; font-size: 14px; color: #a0a0a0; margin-bottom: 16px; }
.price-features li svg { width: 16px; height: 16px; stroke: #666; fill: none; stroke-width: 2; flex-shrink: 0; }
.pricing-card.highlight .price-features li svg { stroke: var(--accent-purple); }

/* ================== SEO 专属模块 ================== */
.seo-features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.seo-feature-card { background: rgba(255, 255, 255, 0.02); border: 1px solid rgba(255, 255, 255, 0.05); border-radius: 16px; padding: 40px 30px; transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease; position: relative; overflow: hidden; }
.theme-light .seo-feature-card { background: #fff; border-color: #eaeaea; box-shadow: 0 10px 30px rgba(0,0,0,0.03); }
.seo-feature-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--primary-blue), var(--accent-purple)); transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease; }
.seo-feature-card:hover { transform: translateY(-10px); border-color: rgba(207, 192, 247, 0.3); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4); }
.theme-light .seo-feature-card:hover { box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08); border-color: #d0d0d0;}
.seo-feature-card:hover::before { transform: scaleX(1); }
.seo-feature-card h3 { font-size: 22px; margin-bottom: 20px; color: #fff; font-weight: 400; }
.theme-light .seo-feature-card h3 { color: #111; }
.seo-feature-card p { font-size: 15px; line-height: 1.7; color: #888; }
.theme-light .seo-feature-card p { color: #666; }

.seo-process-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.seo-process-item { 
  background: var(--bg-darker); 
  border: 1px solid rgba(255, 255, 255, 0.05); 
  padding: 40px; 
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease; 
  border-radius: 16px; 
} 
.theme-light .seo-process-item { background: #fff; border-color: #eaeaea; box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
.seo-process-item:hover { transform: translateY(-5px); border-color: rgba(207, 192, 247, 0.3); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4); }
.theme-light .seo-process-item:hover { box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08); border-color: #d0d0d0;}
.seo-process-item h3 { font-size: 24px; margin-bottom: 24px; display: flex; align-items: center; gap: 12px; color: #fff; font-weight: 400; }
.theme-light .seo-process-item h3 { color: #111; }
.process-number { font-size: 14px; font-weight: 400; color: var(--primary-blue); background: rgba(0, 68, 255, 0.1); padding: 4px 12px; border-radius: 20px; }
.seo-process-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.seo-process-list li { font-size: 15px; color: #a0a0a0; display: flex; align-items: center; gap: 10px; }
.theme-light .seo-process-list li { color: #666; }
.seo-process-list li::before { content: '→'; color: var(--accent-purple); font-family: monospace; }
.theme-light .seo-process-list li::before { color: var(--primary-blue); }

.seo-impact-row { display: flex; align-items: center; gap: 60px; margin-bottom: 80px; }
.seo-impact-row:nth-child(even) { flex-direction: row-reverse; }
.seo-impact-content { flex: 1; }
.seo-impact-content h3 { font-size: 32px; margin-bottom: 20px; color: #fff; font-weight: 400; }
.seo-impact-content p { font-size: 16px; line-height: 1.8; color: #a0a0a0; }
.seo-impact-visual { flex: 1; height: 300px; background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, rgba(255,255,255,0.05) 100%); border: 1px solid rgba(255,255,255,0.1); border-radius: 24px; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.seo-impact-visual::after { content: ''; position: absolute; width: 150px; height: 150px; background: var(--primary-blue); filter: blur(80px); opacity: 0.5; }

/* ================== GEO 专属模块 ================== */
.geo-hero-visual { width: 100%; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 20px; padding: 30px; box-shadow: 0 30px 60px rgba(0,0,0,0.5); backdrop-filter: blur(10px); position: relative; box-sizing: border-box; }
.geo-hero-visual::before { content: ''; position: absolute; top: -2px; left: -2px; right: -2px; bottom: -2px; background: linear-gradient(45deg, var(--primary-blue), transparent, #8A2BE2); z-index: -1; border-radius: 22px; opacity: 0.5; }
.ai-msg { margin-bottom: 20px; display: flex; gap: 12px; }
.ai-avatar { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 400; flex-shrink: 0;}
.avatar-user { background: #333; color: #fff; }
.avatar-ai { background: linear-gradient(135deg, var(--geo-cyan), var(--primary-blue)); color: #fff; }
.ai-bubble { background: rgba(255,255,255,0.05); padding: 16px 20px; border-radius: 0 16px 16px 16px; font-size: 15px; line-height: 1.6; color: #e0e0e0; border: 1px solid rgba(255,255,255,0.05); width: 100%;}
.ai-msg.user-msg .ai-bubble { border-radius: 16px 16px 16px 0; background: rgba(0, 68, 255, 0.1); border-color: rgba(0, 68, 255, 0.2); color: #fff; }
.cursor-blink::after { content: '|'; animation: blink 1s infinite; color: var(--geo-cyan); }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.geo-pain-layout { display: flex; gap: 60px; align-items: center; }
.geo-pain-text { flex: 1; }
.geo-pain-text h2 { font-size: 34px; margin-bottom: 20px; color: #fff; line-height: 1.4; font-weight: 400; }
.theme-light .geo-pain-text h2 { color: #111; }
.geo-pain-text p { font-size: 16px; color: #a0a0a0; line-height: 1.8; margin-bottom: 30px; }
.theme-light .geo-pain-text p { color: #666; }
.geo-data-grid { flex: 1; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.geo-data-card { background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.05); padding: 30px 20px; border-radius: 16px; text-align: center; }
.theme-light .geo-data-card { background: #fff; border-color: #eaeaea; box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
.geo-data-percent { font-size: 46px; font-weight: 400; color: var(--geo-cyan); margin-bottom: 10px; display: block; }
.theme-light .geo-data-percent { color: var(--primary-blue); }
.geo-data-desc { font-size: 13px; color: #888; line-height: 1.5; }
.theme-light .geo-data-desc { color: #666; }

.geo-table-wrapper { background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.05); border-radius: 20px; overflow: hidden; }
.theme-light .geo-table-wrapper { background: #fff; border-color: #eaeaea; box-shadow: 0 10px 30px rgba(0,0,0,0.03); }
.c-row { display: flex; border-bottom: 1px solid rgba(255,255,255,0.05); }
.theme-light .c-row { border-bottom-color: #eaeaea; }
.c-row:last-child { border-bottom: none; }
.c-col { flex: 1; padding: 24px 30px; font-size: 15px; color: #a0a0a0; display: flex; align-items: center; }
.theme-light .c-col { color: #666; }
.c-col:first-child { flex: 0 0 200px; font-weight: 400; color: #fff; background: rgba(255,255,255,0.01); }
.theme-light .c-col:first-child { color: #111; background: var(--bg-gray); }
.c-header { background: rgba(255,255,255,0.03); font-weight: 400; }
.theme-light .c-header { background: #f0f0f0; }
.c-header .c-col { color: #fff; font-size: 18px; }
.theme-light .c-header .c-col { color: #111; }
.c-col.highlight { background: rgba(138, 43, 226, 0.05); color: #cfc0f7; font-weight: 400; position: relative; }
.theme-light .c-col.highlight { background: rgba(138, 43, 226, 0.05); color: #8A2BE2; }
.c-header .c-col.highlight { background: rgba(138, 43, 226, 0.15); color: #fff; }
.theme-light .c-header .c-col.highlight { background: rgba(138, 43, 226, 0.1); color: #8A2BE2; font-weight: bold;}
.c-col.highlight::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: #8A2BE2; }

.platform-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.pf-card { background: rgba(255,255,255,0.01); border: 1px solid rgba(255,255,255,0.04); border-radius: 20px; padding: 40px; position: relative; overflow: hidden; transition: transform 0.4s ease; }
.pf-card:hover { transform: translateY(-5px); background: rgba(255,255,255,0.03); }
.pf-card::after { content: ''; position: absolute; top: -50px; right: -50px; width: 150px; height: 150px; border-radius: 50%; filter: blur(60px); opacity: 0.15; transition: opacity 0.4s ease; }
.pf-card:hover::after { opacity: 0.4; }
.pf-chatgpt::after { background: #10a37f; } .pf-gemini::after { background: #4285f4; } .pf-claude::after { background: #d97757; } .pf-grok::after { background: #ffffff; }
.pf-title { font-size: 24px; font-weight: 400; color: #fff; margin-bottom: 10px; }
.pf-subtitle { font-size: 14px; color: var(--geo-cyan); margin-bottom: 24px; }
.pf-detail { margin-bottom: 12px; font-size: 15px; color: #888; display: flex; align-items: flex-start; gap: 8px;}
.pf-detail strong { color: #ccc; min-width: 45px; font-weight: 400;}

.timeline-wrapper { position: relative; max-width: 900px; margin: 0 auto; padding-left: 60px; /* 增加 padding 为圆点留空间 */ }
.timeline-wrapper::before { content: ''; position: absolute; left: 16px; /* 调整线条位置 */ top: 0; bottom: 0; width: 2px; background: rgba(255,255,255,0.1); }
.theme-light .timeline-wrapper::before { background: #eaeaea; }
.tl-item { position: relative; margin-bottom: 60px; }
.tl-item:last-child { margin-bottom: 0; }
.tl-dot { position: absolute; left: -50px; top: 2px; width: 10px; height: 10px; border-radius: 50%; background: var(--primary-blue); border: 2px solid #030305; box-shadow: 0 0 0 2px rgba(0,68,255,0.3); z-index: 1;}
.theme-light .tl-dot { border-color: var(--bg-light);}
.tl-time { font-size: 14px; font-weight: 400; color: var(--geo-cyan); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }
.theme-light .tl-time { color: var(--primary-blue); }
.tl-title { font-size: 22px; color: #fff; margin-bottom: 12px; font-weight: 400; }
.theme-light .tl-title { color: #111; }
.tl-desc { font-size: 15px; color: #888; line-height: 1.7; }
.theme-light .tl-desc { color: #666; }

.ww-layout { display: flex; gap: 40px; }
.ww-col { flex: 1; background: rgba(255,255,255,0.02); border-radius: 20px; padding: 50px; border: 1px solid rgba(255,255,255,0.05); }
.ww-title { font-size: 26px; color: #fff; margin-bottom: 30px; font-weight: 400; }
.ww-list { list-style: none; padding: 0; margin: 0; }
.ww-list li { position: relative; padding-left: 30px; margin-bottom: 24px; font-size: 15px; color: #a0a0a0; line-height: 1.6; }
.ww-list li::before { content: '•'; position: absolute; left: 0; top: -4px; color: var(--geo-cyan); font-weight: 400; font-size: 24px;}
.ww-list li strong { color: #fff; display: block; margin-bottom: 4px; font-size: 16px; font-weight: 400;}

/* --- FAQ 通用组件 --- */
.faq-layout { display: flex; gap: 60px; }
.faq-left { flex: 0 0 35%; }
.faq-left h2 { font-size: 36px; line-height: 1.3; margin-bottom: 40px; color: var(--text-dark); font-weight: 400; } /* 确保默认是深色 */
.theme-dark .faq-left h2, .bg-dark .faq-left h2, .bg-darker .faq-left h2 { color: #fff; } /* 深色背景下反白 */
.faq-label { font-size: 14px; color: #666; display: flex; align-items: center; gap: 8px; font-weight: 400; }
.faq-label::before { content: '•'; font-size: 20px; }
.faq-right { flex: 1; }
.faq-item { border-bottom: 1px solid rgba(0,0,0,0.1); }
.theme-dark .faq-item, .bg-dark .faq-item, .bg-darker .faq-item { border-bottom-color: rgba(255,255,255,0.1); }
.faq-item:first-child { border-top: 1px solid rgba(0,0,0,0.1); }
.theme-dark .faq-item:first-child, .bg-dark .faq-item:first-child, .bg-darker .faq-item:first-child { border-top: none; }
.faq-q { padding: 24px 0; font-size: 18px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: color 0.3s ease; color: var(--text-dark); font-weight: 400;} /* 确保默认是深色 */
.theme-dark .faq-q, .bg-dark .faq-q, .bg-darker .faq-q { color: #fff; } /* 深色背景下反白 */
.faq-q:hover { color: var(--primary-blue); }
.theme-dark .faq-q:hover, .bg-dark .faq-q:hover, .bg-darker .faq-q:hover { color: var(--accent-purple); }
.faq-icon { font-size: 24px; font-weight: 300; color: #999; transition: transform 0.3s; }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--text-dark); }
.theme-dark .faq-item.active .faq-icon, .bg-dark .faq-item.active .faq-icon, .bg-darker .faq-item.active .faq-icon { color: var(--primary-blue); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; color: #666; font-size: 15px; line-height: 1.8; }
.theme-dark .faq-a, .bg-dark .faq-a, .bg-darker .faq-a { color: #888; }
.faq-item.active .faq-a { padding-bottom: 24px; max-height: 500px; }

/* ================== 响应式 ================== */
@media (max-width: 1024px) {
  .hero-split-layout { flex-direction: column; gap: 40px; align-items: center; text-align: center; }
  .hero-left, .hero-right { width: 100%; flex: auto; position: static; }
  .hero-actions { align-items: center; }
  .trust-badges { justify-content: center; }
  .pain-grid, .srv-grid, .seo-features-grid, .seo-process-grid, .platform-grid { grid-template-columns: 1fr; }
  .process-panel, .pricing-grid, .faq-layout, .seo-impact-row, .seo-impact-row:nth-child(even), .geo-pain-layout, .ww-layout { flex-direction: column; text-align: center; }
  .pricing-grid { gap: 20px; border: none; background: transparent;}
  .pricing-card { border: 2px solid rgba(255,255,255,0.15); border-radius: 24px; background: var(--bg-darker);}
  .seo-impact-row { text-align: center; }
  .geo-table-wrapper { overflow-x: auto; }
  .c-row { min-width: 700px; }
}
@media (max-width: 768px) {
  .hero-left h1 { font-size: 36px; }
  .geo-data-grid { grid-template-columns: 1fr; }
  .ww-col { padding: 30px 20px; }
  .timeline-wrapper { padding-left: 30px; }
  .timeline-wrapper::before { left: 0; }
  .tl-dot { left: -6px; }
}