/* ===== 基础重置 ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;line-height:1.6;color:#0f0f0f;background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}

/* ===== 变量 ===== */
:root{
  --bg:#fff;
  --fg:#0f0f0f;
  --muted:#6b6b6b;
  --light:#f6f6f6;
  --border:#e8e8e8;
  --accent:#0f0f0f;
  --brand:#0ea5e9;
  --brand-light:#f0f9ff;
  --max-width:980px;
  --nav-max-width:1200px;
  --radius:6px;
}

/* ===== 导航 ===== */
.custom-content-block{padding:64px 24px}.custom-content-block__inner{max-width:1100px;margin:0 auto}.custom-content-block__inner>img{display:block;max-width:100%;max-height:520px;margin:24px auto;object-fit:contain}.custom-content-block__items{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:24px}.custom-content-block__item{padding:20px;border:1px solid #e2e8f0;border-radius:10px;background:#fff}.custom-content-block__item img{width:100%;height:160px;object-fit:cover;border-radius:7px;margin-bottom:12px}.custom-content-block--carousel .custom-content-block__items{display:flex;overflow-x:auto;scroll-snap-type:x mandatory}.custom-content-block--carousel .custom-content-block__item{min-width:min(340px,85vw);scroll-snap-align:start}
.nav-links>li{position:relative;flex:0 0 auto}.nav-links .subnav{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:150px;padding:8px;background:#fff;border:1px solid #e5e7eb;border-radius:10px;box-shadow:0 12px 30px rgba(15,23,42,.14);list-style:none;opacity:0;visibility:hidden;transition:.18s;z-index:120}.nav-links .subnav li{display:block}.nav-links .subnav a{display:block;padding:9px 12px;white-space:nowrap;border-radius:7px}.nav-links .subnav a:hover{background:#f0f7ff;color:#3b82f6}.nav-links .has-subnav:hover>.subnav,.nav-links .has-subnav:focus-within>.subnav{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
nav{max-width:var(--nav-max-width);margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{font-size:28px;font-weight:800;color:var(--fg);letter-spacing:-0.5px;white-space:nowrap;flex-shrink:0;display:flex;align-items:center;gap:0}
.logo span{font-weight:400;color:var(--brand);font-size:24px;margin-left:2px}
.nav-links{display:flex;gap:clamp(12px,1.6vw,28px);align-items:center;justify-content:center;flex:1;min-width:0}
.nav-links a{font-size:16px;color:var(--muted);transition:color 0.2s;white-space:nowrap}
.nav-links a:hover{color:var(--brand)}
.nav-cta{background:var(--fg);color:#fff;padding:9px 22px;border-radius:var(--radius);font-size:15px;font-weight:500;transition:opacity 0.2s;white-space:nowrap;flex-shrink:0}
.nav-cta:hover{opacity:0.85}
.mobile-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;padding:0;border:0;border-radius:8px;background:transparent;font:inherit;font-size:24px;line-height:1;color:var(--fg);cursor:pointer}
.mobile-toggle:hover,.mobile-toggle:focus-visible{background:#eff6ff;outline:2px solid transparent}
.mobile-nav-cta{display:none}

/* ===== Hero（首页） ===== */
.hero{position:relative;padding:160px 24px 100px;margin:0 auto;text-align:center;overflow:hidden;background:#f8fafc}
.hero::before{content:'';position:absolute;bottom:-30%;left:-50%;width:200%;height:100%;background:linear-gradient(rgba(203,213,225,0.25) 1px,transparent 1px),linear-gradient(90deg,rgba(203,213,225,0.25) 1px,transparent 1px);background-size:60px 60px;transform:perspective(1000px) rotateX(75deg);transform-origin:center bottom;animation:grid-flow 20s linear infinite;pointer-events:none;z-index:0}
@keyframes grid-flow{0%{background-position:0 0}100%{background-position:0 60px}}
.hero>*{position:relative;z-index:1}
.hero h1{font-size:64px;font-weight:800;line-height:1.1;letter-spacing:-2px;margin-bottom:24px;color:var(--fg)}
.hero h1 .accent{color:var(--brand)}
.hero .sub{font-size:20px;color:var(--muted);max-width:800px;margin:0 auto 36px;line-height:1.6}
.hero .sub strong{color:var(--brand);font-weight:600}
.hero-slogan{font-size:20px;font-weight:600;color:var(--brand);letter-spacing:3px;margin-bottom:20px}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-primary{background:transparent;color:var(--fg);padding:15px 30px;border-radius:var(--radius);font-size:15px;font-weight:500;border:2px solid var(--fg);transition:all 0.2s;display:inline-block}
.btn-primary:hover{background:var(--fg);color:#fff}
.btn-secondary{background:transparent;color:var(--fg);padding:15px 30px;border-radius:var(--radius);font-size:15px;font-weight:500;border:1px solid var(--border);transition:all 0.2s;display:inline-block}
.btn-secondary:hover{border-color:var(--fg)}
.hero-meta{margin-top:56px;display:flex;gap:56px;justify-content:center;flex-wrap:wrap}
.hero-meta .item{text-align:center}
.hero-meta .num{font-size:48px;font-weight:800;color:#f97316;display:block;letter-spacing:-1px}
.hero-meta .label{font-size:15px;color:var(--muted);margin-top:6px}
.hero-platforms{margin-top:48px;padding-top:40px;border-top:1px solid var(--border);text-align:center}
.hero-platforms h2{font-size:42px;font-weight:800;margin-bottom:32px;letter-spacing:-1px;color:var(--fg);line-height:1.2}

/* ===== 数据面板 ===== */
.data-panel{background:#f8fbff;padding:72px 24px;position:relative}
.data-panel .wrap{max-width:var(--max-width);margin:0 auto}
.data-panel h2{font-size:42px;font-weight:800;color:var(--fg);letter-spacing:-1px;margin-bottom:48px;text-align:center;line-height:1.1}
.data-panel h2::after{content:'';display:block;width:60px;height:4px;background:var(--brand);margin:16px auto 0;border-radius:2px}
.data-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.data-card{background:#fff;padding:28px;border-radius:var(--radius);border:1px solid var(--border);transition:all 0.3s;box-shadow:0 1px 3px rgba(0,0,0,0.04)}
.data-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand);transform:translateY(-2px)}
.data-card .num{font-size:36px;font-weight:800;color:var(--brand);margin-bottom:6px;letter-spacing:-1px}
.data-card .label{font-size:16px;font-weight:600;color:var(--fg);margin-bottom:4px}
.data-card .desc{font-size:15px;color:var(--muted);line-height:1.5}

/* ===== 服务（首页） ===== */
.services{padding:96px 24px;max-width:var(--max-width);margin:0 auto}
.section-head{text-align:center;margin-bottom:64px}
.section-head h2{font-size:40px;font-weight:800;margin-bottom:12px;letter-spacing:-0.5px}
.section-head p{font-size:18px;color:var(--muted);max-width:480px;margin:0 auto;line-height:1.6}
.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.service-card{padding:32px;border:1px solid var(--border);border-radius:var(--radius);transition:all 0.3s;border-left:3px solid var(--brand);position:relative;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,0.04)}
.service-card:hover{border-color:var(--brand);box-shadow:0 8px 32px rgba(14,165,233,0.12);transform:translateY(-2px)}
.service-card .num{font-size:14px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.service-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.service-card p{font-size:16px;color:var(--muted);line-height:1.6;margin-bottom:16px}
.service-card ul li{font-size:15px;color:var(--muted);padding:3px 0;padding-left:16px;position:relative}
.service-card ul li::before{content:"→";position:absolute;left:0;color:var(--brand);font-size:10px}

/* ===== 流程 ===== */
.process{background:var(--light);padding:96px 24px}
.process .wrap{max-width:var(--max-width);margin:0 auto}
.steps{display:flex;gap:16px;justify-content:space-between;flex-wrap:wrap;margin-top:56px}
.step{flex:1;min-width:160px;background:#fff;padding:28px;border-radius:var(--radius);border:1px solid var(--border);position:relative;box-shadow:0 1px 3px rgba(0,0,0,0.04);transition:all 0.3s}
.step:hover{border-color:var(--brand);box-shadow:0 8px 32px rgba(14,165,233,0.1);transform:translateY(-2px)}
.step-num{font-size:14px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px;display:block}
.step h4{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--brand)}
.step p{font-size:15px;color:var(--muted);line-height:1.5}

/* ===== 平台 ===== */
.platforms{padding:80px 24px;background:linear-gradient(180deg,#f8fafc 0%,#fff 100%);text-align:center}
.platforms .wrap{max-width:var(--max-width);margin:0 auto}
.platforms h2{font-size:42px;font-weight:800;margin-bottom:24px;letter-spacing:-1px;color:var(--fg);line-height:1.1}
.platform-sub{font-size:18px;color:var(--muted);margin-bottom:48px;line-height:1.6}
.platform-rows{display:flex;flex-direction:column;gap:20px;align-items:center;margin-top:64px;margin-bottom:48px}
.platform-row{display:flex;gap:28px;justify-content:center;flex-wrap:wrap;align-items:center}
.platform-row .plat{padding:12px 28px 12px 18px;background:#fff;border-radius:100px;font-size:16px;font-weight:600;color:var(--fg);border:1px solid var(--border);transition:all 0.3s;opacity:0;animation:plat-fade-in 0.6s ease forwards,plat-float 3s ease-in-out infinite;display:flex;align-items:center;gap:12px;box-shadow:0 2px 8px rgba(0,0,0,0.05)}
.platform-row .plat:hover{box-shadow:0 8px 24px rgba(14,165,233,0.15);border-color:var(--brand);color:var(--brand);transform:translateY(-3px);animation-play-state:paused}
.plat-logo{width:40px;height:40px;object-fit:contain;flex-shrink:0;border-radius:8px;background:#f4f6f8;padding:4px;box-shadow:inset 0 0 0 1px rgba(0,0,0,0.04)}
.platform-row:nth-child(1) .plat:nth-child(1){animation-delay:0.1s,0s}
.platform-row:nth-child(1) .plat:nth-child(2){animation-delay:0.2s,0.5s}
.platform-row:nth-child(1) .plat:nth-child(3){animation-delay:0.3s,1s}
.platform-row:nth-child(2) .plat:nth-child(1){animation-delay:0.4s,1.5s}
.platform-row:nth-child(2) .plat:nth-child(2){animation-delay:0.5s,2s}
.platform-row:nth-child(2) .plat:nth-child(3){animation-delay:0.6s,2.5s}
@keyframes plat-fade-in{to{opacity:1}}
@keyframes plat-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.platform-features{display:flex;gap:32px;justify-content:center;flex-wrap:wrap;margin-top:48px}
.platform-features .feat{text-align:center;max-width:200px}
.platform-features .feat-num{font-size:36px;font-weight:800;color:var(--brand);display:block;margin-bottom:8px}
.platform-features .feat-label{font-size:16px;font-weight:600;color:var(--fg);margin-bottom:6px}
.platform-features .feat-desc{font-size:14px;color:var(--muted);line-height:1.5}

/* ===== FAQ ===== */
.faq{padding:96px 24px;max-width:var(--max-width);margin:0 auto}
.faq-list{margin-top:56px;display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,0.04);transition:all 0.3s}
.faq-item:hover{box-shadow:0 4px 16px rgba(0,0,0,0.06);border-color:var(--brand-light)}
.faq-item summary{padding:18px 22px;font-size:17px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:18px;color:var(--muted);font-weight:300;transition:transform 0.2s}
.faq-item[open]{border-left:3px solid var(--brand)}
.faq-item[open] summary::after{content:"−"}
.faq-item .answer{padding:0 22px 18px;font-size:16px;color:var(--muted);line-height:1.7}

/* ===== CTA ===== */
.cta-section{padding:110px 24px;text-align:center;background:linear-gradient(135deg,#0f172a 0%,#1e293b 100%);color:#fff}
.cta-section h2{font-size:44px;font-weight:800;margin-bottom:16px;letter-spacing:-0.5px}
.cta-section p{font-size:20px;color:rgba(255,255,255,0.65);max-width:520px;margin:0 auto 32px;line-height:1.6}
.cta-section .btn{background:#fff;color:var(--fg);padding:15px 30px;border-radius:var(--radius);font-size:15px;font-weight:500;transition:opacity 0.2s;display:inline-block}
.cta-section .btn:hover{opacity:0.9}

/* ===== Footer ===== */
footer{background:#fafafa;border-top:1px solid var(--border)}
.footer-inner{max-width:var(--max-width);margin:0 auto;padding:48px 24px 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{margin-bottom:10px}
.footer-brand p{font-size:15px;color:var(--muted);line-height:1.6;max-width:260px}
.footer-col h4{font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;margin-bottom:14px;color:var(--fg)}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:15px;color:var(--muted);transition:color 0.2s}
.footer-col ul li a:hover{color:var(--fg)}
.footer-contact p{font-size:15px;color:var(--muted);margin-bottom:12px;padding-bottom:12px;line-height:1.6;border-bottom:1px solid var(--border)}
.footer-contact p:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}
.footer-contact p strong{display:block;color:var(--fg);font-weight:600;margin-bottom:4px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--border);font-size:14px;color:var(--muted);flex-wrap:wrap;gap:12px}
.footer-legal{display:flex;gap:20px;align-items:center}
.footer-legal a{font-size:14px;color:var(--muted);transition:color 0.2s}
.footer-legal a:hover{color:var(--fg)}

/* ===== Page Hero（通用） ===== */
.page-hero{position:relative;padding:140px 24px 80px;margin:0 auto;text-align:center;overflow:hidden;background:#f8fafc}
.page-hero h1{font-size:42px;font-weight:800;line-height:1.1;letter-spacing:-1px;margin-bottom:16px;color:var(--fg)}
.page-hero h1 .accent{color:var(--brand)}
.page-hero .sub{font-size:18px;color:var(--muted);max-width:640px;margin:0 auto;line-height:1.6}

/* ===== About ===== */
.about-section{padding:80px 24px;max-width:var(--max-width);margin:0 auto}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:80px}
.about-text h2{font-size:42px;font-weight:800;color:var(--fg);letter-spacing:-1px;margin-bottom:24px;line-height:1.1}
.about-text h2::after{content:'';display:block;width:60px;height:4px;background:var(--brand);margin:16px 0 0;border-radius:2px}
.about-text p{font-size:17px;color:var(--muted);line-height:1.8;margin-bottom:20px}
.about-text p strong{color:var(--fg);font-weight:600}
.about-highlight{background:var(--brand-light);padding:32px;border-radius:var(--radius);border-left:4px solid var(--brand)}
.about-highlight p{font-size:18px;color:var(--fg);font-weight:600;line-height:1.6;margin:0}
.about-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.stat-card{background:#fff;padding:28px;border-radius:var(--radius);border:1px solid var(--border);text-align:center;box-shadow:0 1px 3px rgba(0,0,0,0.04);transition:all 0.3s}
.stat-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand);transform:translateY(-2px)}
.stat-card .num{font-size:36px;font-weight:800;color:var(--brand);margin-bottom:6px;letter-spacing:-1px}
.stat-card .label{font-size:15px;color:var(--muted)}
.awards{background:#fff;padding:80px 24px}
.awards .wrap{max-width:var(--max-width);margin:0 auto}
.awards h2{font-size:42px;font-weight:800;color:var(--fg);letter-spacing:-1px;margin-bottom:16px;text-align:center;line-height:1.1}
.awards .sub{font-size:18px;color:var(--muted);text-align:center;margin-bottom:56px;line-height:1.6}
.awards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.award-card{background:#fff;padding:32px 24px;border-radius:var(--radius);border:1px solid var(--border);text-align:center;transition:all 0.3s;box-shadow:0 1px 3px rgba(0,0,0,0.04);position:relative;overflow:hidden}
.award-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand),#38bdf8);opacity:0;transition:opacity 0.3s}
.award-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand);transform:translateY(-2px)}
.award-card:hover::before{opacity:1}
.award-card .icon{font-size:40px;margin-bottom:16px}
.award-card h3{font-size:18px;font-weight:700;color:var(--fg);margin-bottom:8px}
.award-card p{font-size:14px;color:var(--muted);line-height:1.6}
.timeline{background:#f8fafc;padding:80px 24px}
.timeline .wrap{max-width:var(--max-width);margin:0 auto}
.timeline h2{font-size:42px;font-weight:800;color:var(--fg);letter-spacing:-1px;margin-bottom:48px;text-align:center;line-height:1.1}
.timeline-list{position:relative;max-width:800px;margin:0 auto;padding-left:40px}
.timeline-list::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:2px;background:var(--brand)}
.timeline-item{position:relative;margin-bottom:40px}
.timeline-item:last-child{margin-bottom:0}
.timeline-dot{position:absolute;left:-34px;top:4px;width:20px;height:20px;border-radius:50%;background:var(--brand);border:4px solid #fff;box-shadow:0 0 0 2px var(--brand)}
.timeline-content{background:#fff;padding:24px 28px;border-radius:var(--radius);border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,0.04);transition:all 0.3s}
.timeline-content:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand)}
.timeline-content h3{font-size:18px;font-weight:700;color:var(--fg);margin-bottom:8px}
.timeline-content p{font-size:15px;color:var(--muted);line-height:1.6}
.values{background:var(--light);padding:80px 24px}
.values .wrap{max-width:var(--max-width);margin:0 auto}
.values h2{font-size:42px;font-weight:800;color:var(--fg);letter-spacing:-1px;margin-bottom:48px;text-align:center;line-height:1.1}
.values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.value-card{background:#fff;padding:32px;border-radius:var(--radius);border:1px solid var(--border);transition:all 0.3s;box-shadow:0 1px 3px rgba(0,0,0,0.04)}
.value-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand);transform:translateY(-2px)}
.value-card .icon{font-size:32px;margin-bottom:16px}
.value-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.value-card p{font-size:16px;color:var(--muted);line-height:1.6}
.platforms-section{padding:80px 24px;background:linear-gradient(180deg,#f8fafc 0%,#fff 100%);text-align:center}
.platforms-section .wrap{max-width:var(--max-width);margin:0 auto}
.platforms-section h2{font-size:42px;font-weight:800;margin-bottom:24px;letter-spacing:-1px;color:var(--fg);line-height:1.1}
.platforms-section .sub{font-size:18px;color:var(--muted);margin-bottom:48px;line-height:1.6}

/* ===== Services ===== */
.overview{padding:60px 24px 40px;max-width:var(--max-width);margin:0 auto}
.overview-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.overview-card{background:#fff;padding:28px;border-radius:var(--radius);border:1px solid var(--border);text-align:center;box-shadow:0 1px 3px rgba(0,0,0,0.04);transition:all 0.3s}
.overview-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand);transform:translateY(-2px)}
.overview-card .num{font-size:14px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.overview-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.overview-card p{font-size:15px;color:var(--muted);line-height:1.5}
.service-detail{padding:60px 24px;max-width:var(--max-width);margin:0 auto}
.service-detail:nth-child(even){background:#fafbfc}
.service-detail-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.service-detail:nth-child(even) .service-detail-inner{direction:rtl}
.service-detail:nth-child(even) .service-detail-inner>*{direction:ltr}
.service-detail-text h2{font-size:42px;font-weight:800;color:var(--fg);letter-spacing:-1px;margin-bottom:20px;line-height:1.1}
.service-detail-text h2::after{content:'';display:block;width:60px;height:4px;background:var(--brand);margin:16px 0 0;border-radius:2px}
.service-detail-text>p{font-size:17px;color:var(--muted);line-height:1.8;margin-bottom:24px}
.service-detail-text ul{margin-bottom:24px}
.service-detail-text ul li{font-size:16px;color:var(--muted);padding:6px 0;padding-left:20px;position:relative}
.service-detail-text ul li::before{content:"→";position:absolute;left:0;color:var(--brand);font-size:10px}
.service-detail-text .highlight{background:var(--brand-light);padding:20px;border-radius:var(--radius);border-left:4px solid var(--brand)}
.service-detail-text .highlight p{font-size:16px;color:var(--fg);font-weight:600;margin:0}
.service-detail-visual{background:linear-gradient(135deg,#f8fafc 0%,#eef2f7 100%);border-radius:var(--radius);padding:48px;display:flex;align-items:center;justify-content:center;min-height:280px}
.service-detail-visual .visual-inner{text-align:center}
.service-detail-visual .visual-icon{font-size:48px;margin-bottom:16px}
.service-detail-visual .visual-text{font-size:18px;font-weight:700;color:var(--fg)}
.algorithm{padding:80px 24px;background:#f8fafc}
.algorithm .wrap{max-width:var(--max-width);margin:0 auto}
.algorithm-head{text-align:center;margin-bottom:56px}
.algorithm-head h1,.algorithm-head h2{font-size:42px;font-weight:800;letter-spacing:-1px;margin-bottom:16px;color:var(--fg)}
.algorithm-head h1 .accent,.algorithm-head h2 .accent{color:var(--brand)}
.algorithm-head p{font-size:18px;color:var(--muted);max-width:640px;margin:0 auto;line-height:1.6}
.algorithm-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.algo-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:all 0.3s;box-shadow:0 1px 3px rgba(0,0,0,0.04)}
.algo-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand);transform:translateY(-2px)}
.algo-card .num{font-size:13px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.algo-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--fg)}
.algo-card p{font-size:15px;color:var(--muted);line-height:1.7}
/* FIX V5.1: 恢复天穹算法四层技术架构可视化。 */
.arch-viz{padding:60px 24px;max-width:var(--max-width);margin:0 auto;text-align:center}
.arch-viz h2{font-size:32px;font-weight:800;color:var(--fg);letter-spacing:-.5px;margin-bottom:48px}
.arch-diagram{max-width:800px;margin:0 auto;width:100%}
.arch-layer{cursor:pointer;transition:all .3s ease}
.arch-layer rect{transition:all .3s ease}
.arch-layer:hover{filter:drop-shadow(0 0 12px rgba(14,165,233,.5))}
.arch-layer:hover rect{fill:url(#archGradHover)}
.arch-arrow{animation:arrowPulse 2s ease-in-out infinite}
@keyframes arrowPulse{0%,100%{opacity:.6}50%{opacity:1}}

/* ===== Blog ===== */
.blog-list{padding:48px 24px;max-width:var(--max-width);margin:0 auto}
.blog-card{display:block;padding:32px 36px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;transition:all 0.3s;position:relative;overflow:hidden}
.blog-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(180deg,var(--brand),#38bdf8);opacity:0;transition:opacity 0.3s}
.blog-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.08);border-color:var(--brand);transform:translateY(-2px)}
.blog-card:hover::before{opacity:1}
.blog-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;flex-wrap:wrap;gap:8px}
.blog-tag{display:inline-block;padding:5px 14px;background:var(--brand-light);color:var(--brand);border-radius:100px;font-size:13px;font-weight:600}
.blog-date{font-size:14px;color:var(--muted)}
.blog-card h2{font-size:24px;font-weight:700;color:var(--fg);margin-bottom:12px;line-height:1.4;letter-spacing:-0.3px}
.blog-card p{font-size:16px;color:var(--muted);line-height:1.7;margin-bottom:20px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.blog-card-footer{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.blog-read{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;transition:gap 0.2s}
.blog-read:hover{gap:10px}
.blog-read::after{content:'→';transition:transform 0.2s}
.blog-read:hover::after{transform:translateX(4px)}
.blog-time{font-size:13px;color:#999}

/* ===== Blog Detail ===== */
.article-meta{font-size:15px;color:var(--muted);margin-top:12px}
.article-meta .tag{display:inline-block;padding:4px 14px;background:var(--brand-light);color:var(--brand);border-radius:100px;font-size:13px;font-weight:600;margin-right:10px}
.article-body{padding:60px 24px;max-width:800px;margin:0 auto}
.article-body h2{font-size:26px;font-weight:700;color:var(--fg);margin:48px 0 16px;letter-spacing:-0.5px}
.article-body h2::after{content:'';display:block;width:50px;height:3px;background:var(--brand);margin:12px 0 0;border-radius:2px}
.article-body h3{font-size:20px;font-weight:700;color:var(--fg);margin:32px 0 12px}
.article-body p{font-size:17px;color:#444;line-height:1.9;margin-bottom:20px}
.article-body ul,.article-body ol{margin:20px 0 20px 28px}
.article-body ul li,.article-body ol li{font-size:17px;color:#444;line-height:1.9;margin-bottom:10px;list-style:disc}
.article-body strong{color:var(--fg);font-weight:600}
.article-body blockquote{border-left:4px solid var(--brand);padding:16px 24px;background:var(--brand-light);margin:28px 0;font-size:17px;color:var(--fg);font-style:italic}
.article-nav{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:40px 24px;max-width:800px;margin:0 auto;border-top:1px solid var(--border)}
.article-nav a{flex:1;padding:24px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;color:var(--muted);transition:all 0.3s;display:block}
.article-nav a:hover{border-color:var(--brand);box-shadow:0 4px 16px rgba(14,165,233,0.08);color:var(--brand)}
.article-nav a strong{display:block;font-size:17px;color:var(--fg);margin-top:6px;font-weight:700;line-height:1.4}
.article-nav .prev{text-align:left}
.article-nav .next{text-align:right}
.article-nav .back{flex:0 0 auto;padding:12px 24px;background:var(--light);border-radius:var(--radius);font-size:14px;color:var(--muted);white-space:nowrap;transition:all 0.2s}
.article-nav .back:hover{background:var(--brand);color:#fff}
.related{padding:60px 24px;background:var(--light)}
.related .wrap{max-width:800px;margin:0 auto}
.related h2{font-size:24px;font-weight:700;margin-bottom:32px;color:var(--fg)}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.related-card{background:#fff;padding:20px;border-radius:var(--radius);border:1px solid var(--border);transition:all 0.3s}
.related-card:hover{border-color:var(--brand);box-shadow:0 4px 16px rgba(14,165,233,0.1)}
.related-card .tag{font-size:12px;font-weight:600;color:var(--brand);margin-bottom:8px;display:block}
.related-card h3{font-size:16px;font-weight:700;color:var(--fg);line-height:1.4;margin-bottom:8px}
.related-card p{font-size:14px;color:var(--muted);line-height:1.6}

/* ===== Cases ===== */
.cases{padding:60px 24px;max-width:1100px;margin:0 auto}
.cases-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.case-card{background:#fff;border-radius:var(--radius);border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,0.04);transition:all 0.3s;overflow:hidden;display:flex;flex-direction:column;height:100%}
.case-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand);transform:translateY(-2px)}
.case-card-body{padding:28px;display:flex;flex-direction:column;flex:1}
.case-card .tag{display:inline-block;padding:4px 12px;background:var(--brand-light);color:var(--brand);border-radius:100px;font-size:13px;font-weight:600;margin-bottom:14px;width:fit-content}
.case-card h3{font-size:20px;font-weight:700;color:var(--fg);margin-bottom:12px;line-height:1.3}
.case-card p{font-size:15px;color:var(--muted);line-height:1.7;margin-bottom:20px;flex:1}
.case-stats{display:flex;gap:16px;padding-top:18px;border-top:1px solid var(--border);margin-top:auto}
.case-stat{text-align:center;flex:1}
.case-stat .num{font-size:26px;font-weight:800;color:var(--brand);display:block}
.case-stat .label{font-size:13px;color:var(--muted);margin-top:2px}

/* ===== Contact ===== */
.contact-main{padding:60px 24px;max-width:var(--max-width);margin:0 auto}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-form h2{font-size:32px;font-weight:800;color:var(--fg);letter-spacing:-0.5px;margin-bottom:8px}
.contact-form>p{color:var(--muted);margin-bottom:32px;font-size:16px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--fg);margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:15px;font-family:inherit;color:var(--fg);background:#fff;transition:border-color 0.2s}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--brand)}
.form-group textarea{min-height:120px;resize:vertical}
.form-submit{background:var(--fg);color:#fff;padding:14px 28px;border-radius:var(--radius);font-size:15px;font-weight:500;border:none;cursor:pointer;transition:opacity 0.2s}
.form-submit:hover{opacity:0.85}
.form-note{font-size:13px;color:var(--muted);margin-top:12px}
.contact-info{display:flex;flex-direction:column;gap:20px}
.info-card{background:#fff;padding:28px;border-radius:var(--radius);border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,0.04)}
.info-card h3{font-size:16px;font-weight:700;color:var(--fg);margin-bottom:12px;text-transform:uppercase;letter-spacing:0.5px}
.info-card p{font-size:15px;color:var(--muted);line-height:1.6;margin-bottom:6px}
.info-card p strong{color:var(--fg);font-weight:600}
.info-card .big{font-size:24px;font-weight:800;color:var(--brand);margin-bottom:4px}
.info-card .cta-link{display:inline-block;margin-top:10px;color:var(--brand);font-weight:600;font-size:15px}
.info-card .cta-link:hover{text-decoration:underline}
.quick-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.quick-links a{padding:8px 16px;background:var(--light);border-radius:var(--radius);font-size:14px;color:var(--fg);font-weight:500;transition:all 0.2s}
.quick-links a:hover{background:var(--brand);color:#fff}
.contact-faq{padding:60px 24px;background:var(--light)}
.contact-faq .wrap{max-width:var(--max-width);margin:0 auto}
.contact-faq h2{font-size:32px;font-weight:800;color:var(--fg);letter-spacing:-0.5px;margin-bottom:32px;text-align:center}
.faq-mini{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.faq-mini-item{background:#fff;padding:24px;border-radius:var(--radius);border:1px solid var(--border)}
.faq-mini-item h4{font-size:16px;font-weight:700;color:var(--fg);margin-bottom:8px}
.faq-mini-item p{font-size:15px;color:var(--muted);line-height:1.6}

/* ===== FAQ Page ===== */
.quick-tags{padding:48px 24px 24px;max-width:var(--max-width);margin:0 auto}
.tags-wrap{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.quick-tags a{padding:10px 20px;background:#fff;border:1px solid var(--border);border-radius:100px;font-size:14px;font-weight:500;color:var(--fg);transition:all 0.2s}
.quick-tags a:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.faq-section{padding:24px 24px 80px;max-width:var(--max-width);margin:0 auto}
.faq-section .section-label{text-align:center;font-size:14px;font-weight:600;color:var(--brand);text-transform:uppercase;letter-spacing:1px;margin-bottom:16px}
.faq-cat{display:inline-block;padding:3px 10px;background:var(--brand-light);color:var(--brand);border-radius:100px;font-size:12px;font-weight:600;margin-right:10px;vertical-align:middle}
.not-found{padding:80px 24px;text-align:center;background:var(--light)}
.not-found h2{font-size:28px;font-weight:800;margin-bottom:12px;color:var(--fg)}
.not-found p{font-size:17px;color:var(--muted);margin-bottom:24px;max-width:480px;margin-left:auto;margin-right:auto}
.not-found .btn{background:var(--fg);color:#fff;padding:14px 28px;border-radius:var(--radius);font-size:15px;font-weight:500;transition:opacity 0.2s;display:inline-block}
.not-found .btn:hover{opacity:0.85}

/* ===== Process ===== */
.process-overview{padding:60px 24px;max-width:var(--max-width);margin:0 auto}
.overview-head{text-align:center;margin-bottom:56px}
.overview-head h2{font-size:42px;font-weight:800;letter-spacing:-1px;margin-bottom:16px;color:var(--fg)}
.overview-head p{font-size:18px;color:var(--muted);max-width:640px;margin:0 auto;line-height:1.6}
.timeline-track{position:relative;max-width:800px;margin:0 auto;padding-left:48px}
.timeline-track::before{content:'';position:absolute;left:16px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--brand) 0%,#38bdf8 100%)}
.timeline-step{position:relative;margin-bottom:48px}
.timeline-step:last-child{margin-bottom:0}
.timeline-dot{position:absolute;left:-40px;top:4px;width:28px;height:28px;border-radius:50%;background:var(--brand);border:4px solid #fff;box-shadow:0 0 0 2px var(--brand);display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;font-weight:700}
.timeline-card{background:#fff;padding:32px;border-radius:var(--radius);border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,0.04);transition:all 0.3s}
.timeline-card:hover{box-shadow:0 8px 32px rgba(14,165,233,0.1);border-color:var(--brand)}
.timeline-card .step-label{font-size:13px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px}
.timeline-card h3{font-size:22px;font-weight:700;margin-bottom:12px;color:var(--fg)}
.timeline-card>p{font-size:16px;color:var(--muted);line-height:1.7;margin-bottom:16px}
.deliverables{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.deliverables span{display:inline-block;padding:6px 14px;background:var(--brand-light);color:var(--brand);border-radius:100px;font-size:13px;font-weight:600}
.step-detail{padding:80px 24px}
.step-detail:nth-child(odd){background:#f8fafc}
.step-detail:nth-child(even){background:#fff}
.step-detail .wrap{max-width:var(--max-width);margin:0 auto;display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start}
.step-detail:nth-child(even) .wrap{direction:rtl}
.step-detail:nth-child(even) .wrap>*{direction:ltr}
.step-info h2{font-size:36px;font-weight:800;color:var(--fg);letter-spacing:-1px;margin-bottom:16px;line-height:1.1}
.step-info h2 .num{color:var(--brand);font-size:28px;display:block;margin-bottom:6px}
.step-info>p{font-size:17px;color:var(--muted);line-height:1.8;margin-bottom:24px}
.step-meta{display:flex;gap:24px;margin-bottom:24px;flex-wrap:wrap}
.step-meta .item{font-size:14px;color:var(--muted)}
.step-meta .item strong{color:var(--fg);font-weight:600}
.step-tasks{background:#fff;padding:28px;border-radius:var(--radius);border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,0.04)}
.step-tasks h4{font-size:16px;font-weight:700;color:var(--fg);margin-bottom:16px;text-transform:uppercase;letter-spacing:0.5px}
.step-tasks ul li{font-size:15px;color:var(--muted);padding:8px 0;padding-left:20px;position:relative;border-bottom:1px solid var(--light)}
.step-tasks ul li:last-child{border-bottom:none}
.step-tasks ul li::before{content:"→";position:absolute;left:0;color:var(--brand);font-size:10px}

/* ===== GEO Guide ===== */
.guide-content{padding:60px 24px;max-width:var(--max-width);margin:0 auto}
.guide-content h2{font-size:32px;font-weight:800;color:var(--fg);letter-spacing:-0.5px;margin:48px 0 20px}
.guide-content h2::after{content:'';display:block;width:60px;height:4px;background:var(--brand);margin:16px 0 0;border-radius:2px}
.guide-content h3{font-size:20px;font-weight:700;color:var(--fg);margin:28px 0 12px}
.guide-content p{font-size:17px;color:var(--muted);line-height:1.8;margin-bottom:20px}
.guide-content ul{margin-bottom:20px;padding-left:24px;list-style:disc}
.guide-content ul li{font-size:17px;color:var(--muted);line-height:1.8;margin-bottom:8px}
.guide-content strong{color:var(--fg);font-weight:600}
.guide-highlight{background:var(--brand-light);padding:28px;border-radius:var(--radius);border-left:4px solid var(--brand);margin:32px 0}
.guide-highlight p{font-size:18px;color:var(--fg);font-weight:600;margin:0}
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin:32px 0}
.step-card{background:var(--light);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:transform 0.2s,border-color 0.2s}
.step-card:hover{transform:translateY(-2px);border-color:var(--brand)}
.step-card .step-num{display:inline-block;width:32px;height:32px;line-height:32px;text-align:center;background:var(--brand);color:#fff;font-size:14px;font-weight:700;border-radius:50%;margin-bottom:12px}
.step-card h4{font-size:18px;font-weight:700;color:var(--fg);margin-bottom:8px}
.step-card p{font-size:15px;color:var(--muted);line-height:1.7;margin:0}
.industry-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin:32px 0}
.industry-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.industry-card h4{font-size:17px;font-weight:700;color:var(--fg);margin-bottom:6px;display:flex;align-items:center;gap:8px}
.industry-card p{font-size:15px;color:var(--muted);line-height:1.7;margin:0}
.industry-icon{width:28px;height:28px;background:var(--brand-light);color:var(--brand);border-radius:6px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.data-section{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;margin:32px 0}
.data-text ul{margin:0;padding-left:0;list-style:none}
.data-text ul li{font-size:16px;color:var(--muted);line-height:1.8;margin-bottom:14px;padding-left:28px;position:relative}
.data-text ul li::before{content:"";position:absolute;left:0;top:10px;width:10px;height:10px;background:var(--brand);border-radius:50%}
.data-text ul li strong{color:var(--fg);font-weight:700;font-size:18px}
.data-viz{background:linear-gradient(135deg,#f8fafc 0%,#eef2f7 100%);border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;gap:24px}
.viz-row{display:flex;align-items:center;gap:16px}
.viz-label{width:90px;font-size:13px;color:var(--muted);font-weight:600;text-align:right;flex-shrink:0}
.viz-bar-wrap{flex:1;height:28px;background:#e2e8f0;border-radius:14px;overflow:hidden;position:relative}
.viz-bar{height:100%;border-radius:14px;background:linear-gradient(90deg,var(--brand) 0%,#38bdf8 100%);display:flex;align-items:center;justify-content:flex-end;padding-right:10px;transition:width 1.5s ease}
.viz-bar-val{font-size:12px;font-weight:700;color:#fff}
.viz-bar-2{background:linear-gradient(90deg,#f59e0b 0%,#fbbf24 100%)}
.viz-bar-3{background:linear-gradient(90deg,#10b981 0%,#34d399 100%)}
.viz-bar-4{background:linear-gradient(90deg,#ef4444 0%,#f87171 100%)}
.viz-circle-row{display:flex;justify-content:space-around;align-items:center;gap:16px}
.viz-circle-item{text-align:center}
.viz-circle{width:80px;height:80px;border-radius:50%;background:conic-gradient(var(--brand) 0% 78%,#e2e8f0 78% 100%);display:flex;align-items:center;justify-content:center;margin:0 auto 8px;position:relative}
.viz-circle::before{content:"";position:absolute;width:56px;height:56px;background:#fff;border-radius:50%}
.viz-circle span{position:relative;z-index:1;font-size:16px;font-weight:800;color:var(--brand)}
.viz-circle-label{font-size:13px;color:var(--muted);font-weight:600}

/* ===== Privacy / Terms ===== */
.content-container{max-width:800px;margin:0 auto;padding:60px 24px}
.content-container h1{font-size:28px;font-weight:700;margin-bottom:8px;color:#0f0f0f}
.content-container .sub{font-size:14px;color:#888;margin-bottom:40px}
.content-container h2{font-size:18px;font-weight:700;margin:32px 0 12px;color:#0f0f0f;border-left:3px solid #0ea5e9;padding-left:10px}
.content-container p{font-size:15px;color:#555;margin-bottom:12px}
.content-container ul{margin:12px 0 12px 24px}
.content-container ul li{font-size:15px;color:#555;margin-bottom:6px}
.content-container .back{margin-top:48px;font-size:14px}
.content-container .back a{color:#0ea5e9;text-decoration:none}
.content-container .back a:hover{text-decoration:underline}

/* ===== 404 ===== */
.error-container{max-width:800px;margin:0 auto;padding:120px 24px;text-align:center}
.error-code{font-size:120px;font-weight:800;color:#0ea5e9;line-height:1;letter-spacing:-2px;margin-bottom:16px}
.error-title{font-size:28px;font-weight:700;color:#0f172a;margin-bottom:16px}
.error-desc{font-size:16px;color:#64748b;margin-bottom:40px;max-width:480px;margin-left:auto;margin-right:auto}
.error-btn{display:inline-block;padding:14px 36px;background:#0ea5e9;color:#fff;font-size:16px;font-weight:600;border-radius:8px;text-decoration:none;transition:background 0.2s}
.error-btn:hover{background:#0284c7}

/* ===== Responsive ===== */
@media(max-width:768px){
  .nav-links,.nav-cta{display:none}
  nav{position:relative}
  .mobile-toggle{display:inline-flex;flex:0 0 auto}
  .nav-links.active{display:flex;position:absolute;top:calc(100% + 8px);left:16px;right:16px;max-height:calc(100vh - 88px);overflow-y:auto;flex-direction:column;align-items:stretch;gap:0;padding:10px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 18px 45px rgba(15,23,42,.16);z-index:130}
  .nav-links.active>li{width:100%}
  .nav-links.active>li>a{display:block;width:100%;padding:12px 14px;border-radius:8px;color:var(--fg)}
  .nav-links.active>li>a:hover,.nav-links.active>li>a:focus-visible{background:#f0f7ff;color:var(--brand)}
  .nav-links.active .subnav{position:static;min-width:0;margin:0 0 4px;padding:0 0 0 14px;border:0;box-shadow:none;opacity:1;visibility:visible;transform:none}
  .nav-links.active .subnav a{padding:9px 12px;color:var(--muted)}
  .nav-links.active .mobile-nav-cta{display:block;margin-top:6px}
  .nav-links.active .mobile-nav-cta>a{background:var(--fg);color:#fff;text-align:center;font-weight:600}
  .nav-links.active .mobile-nav-cta>a:hover,.nav-links.active .mobile-nav-cta>a:focus-visible{background:#1e293b;color:#fff}
  .hero h1{font-size:40px;letter-spacing:-1px}
  .hero .sub{font-size:18px}
  .hero-meta{gap:28px}
  .hero-meta .num{font-size:40px}
  .page-hero h1{font-size:36px;letter-spacing:-1px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .about-stats{grid-template-columns:repeat(2,1fr)}
  .service-detail-inner{grid-template-columns:1fr!important;gap:40px}
  .service-detail:nth-child(even) .service-detail-inner{direction:ltr}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .step-detail .wrap{grid-template-columns:1fr!important;gap:40px}
  .step-detail:nth-child(even) .wrap{direction:ltr}
  .data-section{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cases-grid{grid-template-columns:1fr}
  .blog-card{padding:24px}
  .blog-card h2{font-size:21px}
  .blog-card-header{flex-direction:column;align-items:flex-start}
  .article-nav{flex-direction:column}
  .timeline-track{padding-left:36px}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr}
  .hero{padding:120px 20px 64px}
  .page-hero{padding:120px 20px 60px}
  .data-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .overview-grid{grid-template-columns:1fr}
  .viz-circle{width:64px;height:64px}
  .viz-circle::before{width:44px;height:44px}
  .viz-circle span{font-size:14px}
}

/* ===== 辅助 ===== */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
/* CMS-added universal content blocks */
.custom-content-block { padding: 72px 24px; background: #f8fafc; }
.custom-content-block:nth-child(even) { background: #fff; }
.custom-content-block__inner { max-width: 900px; margin: 0 auto; text-align: center; }
.custom-content-block h2 { margin: 0 0 14px; color: #1e293b; font-size: clamp(26px, 3vw, 38px); }
.custom-content-block p { max-width: 720px; margin: 0 auto 22px; color: #64748b; font-size: 17px; line-height: 1.8; }
/* FIX: 全站通用自定义内容模板。无图时自动切换单列居中，不保留空白列。 */
.universal-content{width:min(1100px,100%);margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr);align-items:center;gap:clamp(28px,5vw,64px)}
.universal-content--with-image{grid-template-columns:minmax(0,1fr) minmax(280px,.9fr)}
.universal-content--left .universal-content__media{order:-1}
.universal-content--top{grid-template-columns:minmax(0,1fr)}
.universal-content--top .universal-content__media{order:-1;max-width:900px;margin:0 auto}
.universal-content--no-image{max-width:850px;text-align:center}
.universal-content__copy h2{font-size:clamp(28px,4vw,46px);line-height:1.18;margin:0 0 14px;color:#0f172a}
.universal-content__subtitle{max-width:none!important;margin:0 0 18px!important;color:var(--brand)!important;font-size:clamp(17px,2vw,21px)!important;font-weight:600}
.universal-content__body{color:#64748b;font-size:17px;line-height:1.9;white-space:pre-line}
.universal-content__media{margin:0;min-width:0}
.universal-content__media img{width:100%;max-height:560px;object-fit:contain;border-radius:12px}
@media(max-width:768px){.universal-content--with-image{grid-template-columns:1fr}.universal-content--left .universal-content__media{order:0}.universal-content__copy{text-align:left}.universal-content--no-image .universal-content__copy{text-align:center}}
.cms-preview-mode [data-module-key] { cursor: pointer; outline: 2px dashed transparent; outline-offset: -2px; transition: outline-color .15s, background-color .15s; }
.cms-preview-mode [data-module-key]:hover { outline-color: #60a5fa; background-color: rgba(96,165,250,.05); }