/* ===== SHARED STYLES — 室内定位官网 ===== */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#0f2d5e;
  --primary-light:#1a3a6b;
  --primary-pale:#eef2ff;
  --accent:#3b8bff;
  --accent-light:#4fc3f7;
  --dark:#071223;
  --gray-100:#f4f6fa;
  --gray-200:#e4e8f0;
  --gray-300:#c8cdd8;
  --gray-500:#6b7280;
  --gray-600:#4b5563;
  --gray-700:#374151;
  --gray-900:#1a1a2e;
  --shadow-sm:0 2px 8px rgba(15,45,94,.06);
  --shadow-md:0 6px 24px rgba(15,45,94,.10);
  --shadow-lg:0 16px 48px rgba(15,45,94,.14);
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:20px;
}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Arial,sans-serif;background:var(--gray-100);color:var(--gray-900);line-height:1.65}

/* ===== NAV ===== */
.nav{background:#fff;border-bottom:1px solid var(--gray-200);padding:0 40px;height:64px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;transition:box-shadow .3s}
.nav.scrolled{box-shadow:0 4px 20px rgba(15,45,94,.12)}
.nav-logo{font-size:15px;font-weight:700;color:var(--primary);letter-spacing:.3px;display:flex;align-items:center;gap:8px;text-decoration:none}
.nav-logo:hover{color:var(--accent)}
.nav-logo-icon{width:28px;height:28px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:24px;list-style:none}
.nav-links a{font-size:13px;color:var(--gray-600);text-decoration:none;font-weight:500;transition:color .2s;padding:6px 0;position:relative}
.nav-links a:hover{color:var(--primary)}
.nav-links a::after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--accent);transform:scaleX(0);transition:transform .2s}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary);font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{background:var(--primary);color:#fff;border:none;border-radius:10px;padding:9px 22px;font-size:13px;font-weight:600;cursor:pointer;text-decoration:none;transition:background .2s,transform .15s}
.nav-cta:hover{background:var(--accent);transform:translateY(-1px)}

/* ===== BREADCRUMB ===== */
.breadcrumb{max-width:1140px;margin:0 auto;padding:14px 24px;font-size:12px;color:var(--gray-500)}
.breadcrumb a{color:var(--gray-600);text-decoration:none}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:var(--gray-500)}

/* ===== PAGE HEADER (internal pages) ===== */
.page-header{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:60px 24px;text-align:center;position:relative;overflow:hidden}
.page-header::after{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 50%,rgba(255,255,255,.06) 0%,transparent 70%)}
.page-header h1{font-size:clamp(24px,4vw,38px);font-weight:800;margin-bottom:12px;position:relative;z-index:1}
.page-header p{font-size:15px;color:rgba(255,255,255,.7);max-width:600px;margin:0 auto;position:relative;z-index:1}
.page-header-tags{display:flex;justify-content:center;gap:8px;margin-top:18px;position:relative;z-index:1}
.page-header-tag{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:4px 14px;font-size:12px;color:rgba(255,255,255,.8)}

/* ===== BACK TO TOP ===== */
.back-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer;opacity:0;transform:translateY(12px);transition:opacity .3s,transform .3s;z-index:200;box-shadow:var(--shadow-md);border:none}
.back-top.show{opacity:1;transform:translateY(0)}
.back-top:hover{background:var(--accent);transform:scale(1.08)}

/* ===== HERO ===== */
.hero{background:var(--dark);color:#fff;padding:80px 24px 88px;text-align:center;position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:44px 44px}
.hero-glow{position:absolute;width:600px;height:400px;background:radial-gradient(ellipse at 50% 0%,rgba(59,139,255,.18) 0%,transparent 70%);top:0;left:50%;transform:translateX(-50%);pointer-events:none}
.hero-inner{position:relative;z-index:1;max-width:820px;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:7px;background:rgba(59,139,255,.15);border:1px solid rgba(59,139,255,.35);border-radius:24px;padding:6px 16px;font-size:12px;color:var(--accent-light);margin-bottom:28px;letter-spacing:.6px;font-weight:500}
.hero-badge-dot{width:6px;height:6px;background:var(--accent-light);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:clamp(30px,5.5vw,50px);font-weight:800;line-height:1.2;margin-bottom:20px;letter-spacing:-.8px}
.hero h1 em{color:var(--accent-light);font-style:normal}
.hero-sub{font-size:17px;color:rgba(255,255,255,.68);max-width:600px;margin:0 auto 36px;line-height:1.8}
.hero-tags{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-bottom:52px}
.hero-tag{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);border-radius:6px;padding:5px 14px;font-size:13px;color:rgba(255,255,255,.82);transition:background .2s}
.hero-tag:hover{background:rgba(59,139,255,.2);border-color:rgba(59,139,255,.4)}
.hero-stats{display:flex;justify-content:center;gap:0;flex-wrap:wrap;max-width:760px;margin:0 auto;border:1px solid rgba(255,255,255,.1);border-radius:16px;overflow:hidden;background:rgba(255,255,255,.04)}
.stat{flex:1;min-width:150px;padding:22px 18px;text-align:center;border-right:1px solid rgba(255,255,255,.1);position:relative}
.stat:last-child{border-right:none}
.stat::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:32px;height:3px;background:var(--accent);border-radius:0 0 3px 3px;opacity:0;transition:opacity .3s}
.stat:hover::before{opacity:1}
.stat-num{font-size:32px;font-weight:800;color:var(--accent-light);display:block;line-height:1;font-family:system-ui,-apple-system,sans-serif}
.stat-unit{font-size:15px;color:var(--accent-light)}
.stat-label{font-size:12px;color:rgba(255,255,255,.7);margin-top:6px;display:block;font-weight:500;letter-spacing:.3px}

/* ===== SECTION ===== */
.section{padding:72px 24px;max-width:1140px;margin:0 auto}
.section-header{text-align:center;margin-bottom:48px}
.section-tag{display:inline-flex;align-items:center;gap:6px;background:var(--primary-pale);color:var(--primary);font-size:12px;font-weight:700;padding:4px 14px;border-radius:20px;margin-bottom:14px;letter-spacing:.8px;text-transform:uppercase}
.section-title{font-size:clamp(22px,3.5vw,34px);font-weight:800;color:var(--gray-900);margin-bottom:12px;letter-spacing:-.5px}
.section-sub{font-size:15px;color:var(--gray-500);max-width:580px;margin:0 auto;line-height:1.8}
.section-divider{height:1px;background:linear-gradient(90deg,transparent,var(--gray-300),transparent);margin:0 auto;max-width:1080px}

/* ===== HERO PLATFORM PREVIEW ===== */
.hero-platform-preview{max-width:820px;margin:48px auto 0;position:relative;z-index:1}
.platform-mock{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;overflow:hidden;backdrop-filter:blur(10px);box-shadow:0 20px 60px rgba(0,0,0,.35);transition:transform .3s,box-shadow .3s}
.platform-mock:hover{transform:translateY(-4px);box-shadow:0 28px 72px rgba(0,0,0,.45)}
.platform-toolbar{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:rgba(0,0,0,.25);border-bottom:1px solid rgba(255,255,255,.08)}
.platform-dots{display:flex;gap:6px}
.platform-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.3)}
.platform-dots span:nth-child(1){background:rgba(255,255,255,.45)}
.platform-dots span:nth-child(2){background:rgba(255,255,255,.35)}
.platform-dots span:nth-child(3){background:rgba(255,255,255,.25)}
.platform-title{font-size:11px;color:rgba(255,255,255,.5);font-weight:500;letter-spacing:.3px}
.platform-badge-live{font-size:10px;color:#4fc3f7;font-weight:600;letter-spacing:.5px;animation:pulse 2s infinite}
.platform-body{display:grid;grid-template-columns:2fr 1fr;gap:0;min-height:260px}
.platform-map{position:relative;padding:12px;display:flex;flex-direction:column}
.map-svg{width:100%;height:auto;border-radius:8px;background:rgba(0,0,0,.2)}
.map-legend{display:flex;gap:16px;margin-top:8px;padding-left:4px}
.map-legend span{font-size:10px;color:rgba(255,255,255,.45);display:flex;align-items:center;gap:4px}
.leg-dot{display:inline-block;width:8px;height:8px;border-radius:50%}
.platform-data{padding:16px;display:flex;flex-direction:column;gap:0;border-left:1px solid rgba(255,255,255,.08)}
.data-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.data-label{font-size:11px;color:rgba(255,255,255,.4)}
.data-val{font-size:20px;font-weight:800;color:#4fc3f7;font-family:system-ui,sans-serif}
.data-val.warn{color:#ffa726}
.data-val.ok{color:#66bb6a}
.data-unit{font-size:11px;font-weight:500;opacity:.7}
.data-divider{height:1px;background:rgba(255,255,255,.06);margin:8px 0}
.data-recent{display:flex;flex-direction:column;gap:5px}
.recent-title{font-size:10px;color:rgba(255,255,255,.35);font-weight:600;letter-spacing:.4px;margin-bottom:2px}
.recent-item{font-size:10px;color:rgba(255,255,255,.45);padding:3px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ===== SHOWCASE ===== */
.showcase-section{background:var(--gray-100);padding:64px 24px}
.showcase-inner{max-width:1140px;margin:0 auto}
.showcase-header{text-align:center;margin-bottom:36px}
.showcase-header h3{font-size:22px;font-weight:700;color:var(--gray-900);margin-bottom:6px}
.showcase-header p{font-size:14px;color:var(--gray-500)}
.showcase-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.showcase-item{border-radius:14px;overflow:hidden;box-shadow:var(--shadow-md);transition:transform .25s,box-shadow .25s;position:relative;cursor:pointer}
.showcase-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.showcase-item img{width:100%;height:165px;object-fit:cover;display:block;transition:transform .3s}
.showcase-item:hover img{transform:scale(1.04)}
.showcase-overlay{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(7,18,35,.75));padding:32px 14px 14px}
.showcase-overlay span{font-size:12px;font-weight:600;color:#fff;letter-spacing:.5px}

/* ===== TECH CARDS ===== */
.tech-section{background:#fff;padding:72px 24px}
.tech-inner{max-width:1140px;margin:0 auto}
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tech-card{background:#fff;border-radius:var(--radius-lg);padding:32px 28px;border:1.5px solid var(--gray-200);transition:transform .25s,box-shadow .25s,border-color .25s;position:relative;overflow:hidden}
.tech-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gray-200);transition:background .3s}
.tech-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--gray-300)}
.tech-card:hover::before{background:var(--accent)}
.tech-card.best{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}
.tech-card.best::before{background:var(--primary)}
.best-badge{position:absolute;top:18px;right:18px;background:var(--primary);color:#fff;font-size:11px;font-weight:700;padding:4px 12px;border-radius:20px;letter-spacing:.3px}
.tech-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px;transition:transform .3s}
.tech-card:hover .tech-icon{transform:scale(1.1)}
.tech-card:nth-child(1) .tech-icon{background:linear-gradient(135deg,#e8f0fe,#d4e3ff)}
.tech-card:nth-child(2) .tech-icon{background:linear-gradient(135deg,#e0f7ef,#c8f5e5)}
.tech-card:nth-child(3) .tech-icon{background:linear-gradient(135deg,#fff3e0,#ffe8c2)}
.tech-name{font-size:19px;font-weight:800;color:var(--gray-900);margin-bottom:8px;letter-spacing:-.3px}
.tech-acc{display:inline-flex;align-items:center;background:linear-gradient(135deg,var(--primary-pale),#e0e8ff);color:var(--primary);font-size:12px;font-weight:700;padding:3px 12px;border-radius:6px;margin-bottom:14px;letter-spacing:.3px}
.tech-desc{font-size:14px;color:var(--gray-600);line-height:1.8;margin-bottom:20px}
.tech-features{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.tech-feat{font-size:13px;color:var(--gray-700);display:flex;align-items:flex-start;gap:8px}
.tech-feat::before{content:'✓';width:16px;height:16px;background:var(--primary);color:#fff;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:9px;font-weight:700;margin-top:1px}
.tech-scenes{display:flex;flex-wrap:wrap;gap:6px;padding-top:16px;border-top:1px solid var(--gray-200)}
.scene-tag{background:var(--gray-100);border:1px solid var(--gray-200);border-radius:6px;padding:3px 10px;font-size:12px;color:var(--gray-600);transition:background .2s,border-color .2s}
.tech-card:hover .scene-tag{background:var(--primary-pale);border-color:var(--primary-pale);color:var(--primary)}

/* ===== INDUSTRIES ===== */
.ind-section{background:var(--gray-100);padding:72px 24px}
.ind-inner{max-width:1140px;margin:0 auto}
.ind-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ind-card{background:#fff;border-radius:var(--radius-md);padding:28px 24px;border:1px solid var(--gray-200);cursor:pointer;transition:all .25s;position:relative;overflow:hidden;text-decoration:none;display:block;color:inherit}
.ind-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--gray-200);transition:background .25s}
.ind-card:hover{background:#fff;border-color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow-md);color:inherit}
.ind-card:hover::before{background:var(--accent)}
.ind-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.ind-icon{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.ind-name{font-size:14px;font-weight:700;color:var(--gray-900);line-height:1.3}
.ind-pain{font-size:13px;color:var(--gray-500);margin-bottom:12px;line-height:1.65;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.ind-solution{font-size:13px;color:var(--primary);font-weight:600;line-height:1.65;padding-top:10px;border-top:1px solid var(--gray-200)}
.ind-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:10px}
.ind-tag{background:var(--primary-pale);color:var(--primary);font-size:11px;padding:2px 8px;border-radius:5px;font-weight:600}

/* ===== CASES ===== */
.cases-section{background:#fff;padding:72px 24px}
.cases-inner{max-width:1140px;margin:0 auto}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--gray-200);transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column;text-decoration:none;color:inherit}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);color:inherit}
.case-img-wrap{position:relative;overflow:hidden}
.case-img{width:100%;height:185px;object-fit:cover;display:block;transition:transform .4s}
.case-card:hover .case-img{transform:scale(1.06)}
.case-tech-badge{position:absolute;top:12px;left:12px;background:rgba(7,18,35,.82);color:#fff;font-size:11px;font-weight:700;padding:4px 12px;border-radius:20px;backdrop-filter:blur(4px);letter-spacing:.3px}
.case-body{flex:1;padding:20px 22px 24px;display:flex;flex-direction:column}
.case-name{font-size:16px;font-weight:800;color:var(--gray-900);margin-bottom:4px;letter-spacing:-.2px}
.case-type{font-size:12px;color:var(--gray-500);margin-bottom:14px}
.case-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.case-tag{background:var(--gray-100);border:1px solid var(--gray-200);border-radius:6px;padding:3px 9px;font-size:11px;color:var(--gray-600);font-weight:500}
.case-result{flex:1;font-size:13px;color:var(--gray-600);line-height:1.7;padding-top:14px;border-top:1px dashed var(--gray-200);display:flex;align-items:flex-start;gap:6px}
.case-result::before{content:'★';color:var(--accent);font-size:12px;margin-top:2px;flex-shrink:0}
.result-highlight{color:var(--primary);font-weight:700}

/* ===== FUNCTIONS ===== */
.func-section{background:var(--gray-100);padding:72px 24px}
.func-inner{max-width:1140px;margin:0 auto}
.func-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.func-card{background:#fff;border-radius:var(--radius-md);padding:22px 18px;border:1px solid var(--gray-200);transition:all .2s}
.func-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md)}
.func-icon{font-size:24px;margin-bottom:10px}
.func-name{font-size:14px;font-weight:700;color:var(--gray-900);margin-bottom:10px}
.func-list{list-style:none;font-size:12px;color:var(--gray-500);line-height:2}
.func-list li{display:flex;align-items:center;gap:6px}
.func-list li::before{content:'';width:4px;height:4px;background:var(--accent);border-radius:50%;flex-shrink:0}

/* ===== PAIN SECTION ===== */
.pain-section{background:var(--dark);padding:80px 24px;color:#fff;position:relative;overflow:hidden}
.pain-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 80% 50%,rgba(59,139,255,.1) 0%,transparent 60%),radial-gradient(ellipse at 20% 80%,rgba(79,195,247,.07) 0%,transparent 50%)}
.pain-inner{position:relative;z-index:1;max-width:1140px;margin:0 auto}
.pain-header{text-align:center;margin-bottom:48px}
.pain-header .section-tag{background:rgba(59,139,255,.18);color:var(--accent-light);border:1px solid rgba(79,195,247,.3)}
.pain-header h2{font-size:clamp(22px,3vw,32px);font-weight:800;margin:14px auto 10px;color:#fff}
.pain-header p{color:rgba(255,255,255,.55);font-size:15px}
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pain-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);padding:26px 22px;transition:all .25s;position:relative;overflow:hidden}
.pain-card::after{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--accent-light));transform:scaleX(0);transition:transform .3s;transform-origin:left}
.pain-card:hover{background:rgba(255,255,255,.09);border-color:rgba(79,195,247,.3);transform:translateY(-3px)}
.pain-card:hover::after{transform:scaleX(1)}
.pain-num{font-size:30px;font-weight:800;color:var(--accent-light);margin-bottom:8px;font-family:system-ui,sans-serif;opacity:.7}
.pain-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:8px}
.pain-text{font-size:13px;color:rgba(255,255,255,.55);line-height:1.7}

/* ===== FORM ===== */
.form-section{background:linear-gradient(160deg,#0f2d5e 0%,#0a1e45 50%,#071223 100%);padding:80px 24px;text-align:center;position:relative;overflow:hidden}
.form-bg-glow{position:absolute;width:500px;height:500px;background:radial-gradient(ellipse,rgba(59,139,255,.15),transparent 70%);top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none}
.form-inner{position:relative;z-index:1;max-width:600px;margin:0 auto}
.form-header h2{color:#fff;font-size:clamp(24px,3.5vw,36px);font-weight:800;margin-bottom:12px;letter-spacing:-.5px}
.form-header p{color:rgba(255,255,255,.65);font-size:15px;margin-bottom:36px;line-height:1.8}
.form-promise{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:32px}
.promise-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:16px 12px;text-align:center;transition:all .2s}
.promise-card:hover{background:rgba(59,139,255,.2);border-color:rgba(79,195,247,.4);transform:translateY(-2px)}
.promise-icon{font-size:22px;margin-bottom:6px}
.promise-num{font-size:22px;font-weight:800;color:var(--accent-light);display:block}
.promise-txt{font-size:12px;color:rgba(255,255,255,.6);margin-top:2px}
.form-wrapper{background:#fff;border-radius:var(--radius-lg);padding:40px 38px;text-align:left;box-shadow:0 24px 64px rgba(0,0,0,.3)}
.feishu-form-notice{display:flex;align-items:center;gap:8px;padding:10px 16px;background:#f0f7ff;border:1px solid #d0e3ff;border-radius:10px;margin-bottom:20px;font-size:13px;color:var(--primary);font-weight:500}
.feishu-notice-icon{font-size:16px;flex-shrink:0}
.feishu-form-wrap{/* iframe container */}
.form-group{margin-bottom:18px}
.form-label{display:block;font-size:14px;font-weight:700;color:var(--gray-900);margin-bottom:6px}
.form-label span{color:#e24b4a;margin-left:2px}
.form-input,.form-select,.form-textarea{width:100%;padding:12px 15px;border:1.5px solid var(--gray-300);border-radius:10px;font-size:14px;color:var(--gray-900);background:#fafbfc;transition:border-color .2s,box-shadow .2s;outline:none;font-family:inherit}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(59,139,255,.12)}
.form-textarea{resize:vertical;min-height:82px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cb-group{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.cb-item{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--gray-600);cursor:pointer;background:#f5f6f8;border:1.5px solid var(--gray-300);border-radius:8px;padding:7px 14px;transition:all .15s;user-select:none;font-weight:500}
.cb-item input{display:none}
.cb-item.on{background:var(--primary-pale);border-color:var(--primary);color:var(--primary);font-weight:700}
.submit-btn{width:100%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border:none;border-radius:12px;padding:16px;font-size:16px;font-weight:700;cursor:pointer;margin-top:10px;transition:opacity .2s,transform .15s,box-shadow .2s;letter-spacing:.5px;box-shadow:0 6px 24px rgba(59,139,255,.35)}
.submit-btn:hover{opacity:.92;transform:translateY(-2px);box-shadow:0 10px 32px rgba(59,139,255,.45)}
.submit-btn:active{transform:translateY(0)}
.form-note{text-align:center;font-size:12px;color:var(--gray-500);margin-top:14px}
.success-box{display:none;text-align:center;padding:32px 0}
.success-icon-wrap{width:72px;height:72px;background:linear-gradient(135deg,#e8f8f0,#c8f5e5);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:36px;margin:0 auto 16px}
.success-title{font-size:22px;font-weight:800;color:var(--gray-900);margin-bottom:10px}
.success-text{font-size:14px;color:var(--gray-600);line-height:1.8}

/* ===== INDUSTRY DETAIL PAGE ===== */
.industry-detail{max-width:880px;margin:0 auto;padding:56px 24px}
.industry-detail h2{font-size:24px;font-weight:800;color:var(--gray-900);margin:48px 0 16px;padding-bottom:12px;border-bottom:2px solid var(--primary-pale)}
.industry-detail h2:first-of-type{margin-top:0}
.industry-detail h3{font-size:18px;font-weight:700;color:var(--gray-900);margin:28px 0 12px}
.industry-detail p{font-size:15px;color:var(--gray-600);line-height:1.9;margin-bottom:16px}
.industry-detail ul{list-style:none;padding:0;margin:16px 0}
.industry-detail ul li{font-size:14px;color:var(--gray-600);padding:8px 0 8px 24px;position:relative;line-height:1.75}
.industry-detail ul li::before{content:'';position:absolute;left:0;top:14px;width:8px;height:8px;background:var(--accent);border-radius:50%}
.industry-detail .highlight-box{background:linear-gradient(135deg,var(--primary-pale),#e0e8ff);border-radius:var(--radius-md);padding:24px 28px;margin:28px 0}
.industry-detail .highlight-box p{color:var(--primary);font-weight:600;margin:0;font-size:15px}
.industry-detail .key-data{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:28px 0}
.key-card{background:#fff;border:1.5px solid var(--gray-200);border-radius:var(--radius-md);padding:20px;text-align:center}
.key-card .key-num{font-size:28px;font-weight:800;color:var(--primary);display:block}
.key-card .key-label{font-size:12px;color:var(--gray-500);margin-top:4px}

/* ===== CTAs ===== */
.cta-block{background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:var(--radius-lg);padding:36px;text-align:center;margin-top:48px;color:#fff}
.cta-block h3{color:#fff;font-size:20px;margin-bottom:8px}
.cta-block p{color:rgba(255,255,255,.75);font-size:14px;margin-bottom:20px}
.cta-block .cta-btn{display:inline-block;background:#fff;color:var(--primary);padding:12px 32px;border-radius:10px;font-size:15px;font-weight:700;text-decoration:none;transition:transform .15s,box-shadow .2s}
.cta-block .cta-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.25)}
.cta-tel{color:rgba(255,255,255,.6);font-size:13px;margin-top:12px}
.cta-tel a{color:var(--accent-light);text-decoration:none;font-weight:700}

/* ===== RELATED LINKS ===== */
.related-links{max-width:880px;margin:0 auto;padding:0 24px 56px}
.related-links h3{font-size:18px;font-weight:700;color:var(--gray-900);margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.related-link{background:#fff;border:1px solid var(--gray-200);border-radius:10px;padding:14px;text-align:center;font-size:13px;color:var(--gray-600);text-decoration:none;font-weight:500;transition:all .2s}
.related-link:hover{border-color:var(--accent);color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}

/* ===== FOOTER ===== */
footer{background:#040d18;color:rgba(255,255,255,.38);text-align:center;padding:36px 24px;font-size:13px}
footer .footer-top{margin-bottom:16px;display:flex;flex-wrap:wrap;justify-content:center;gap:4px 12px;font-size:12px}
footer .footer-top a{color:rgba(255,255,255,.45);text-decoration:none}
footer .footer-top a:hover{color:var(--accent-light)}
footer p+p{margin-top:8px}
footer a{color:rgba(255,255,255,.55);text-decoration:none}
footer a:hover{color:var(--accent-light)}

/* ===== ANIMATIONS ===== */
.fade-up{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .tech-grid,.cases-grid{grid-template-columns:repeat(2,1fr)}
  .ind-grid,.related-grid{grid-template-columns:repeat(2,1fr)}
  .func-grid{grid-template-columns:repeat(2,1fr)}
  .showcase-grid{grid-template-columns:repeat(2,1fr)}
  .key-data{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav{padding:0 20px}
  .nav-links{display:none}
  .hero-stats{flex-direction:column}
  .stat{border-right:none;border-bottom:1px solid rgba(255,255,255,.1)}
  .stat:last-child{border-bottom:none}
  .platform-body{grid-template-columns:1fr}
  .platform-data{border-left:none;border-top:1px solid rgba(255,255,255,.08);flex-direction:row;flex-wrap:wrap;gap:8px}
  .data-row{flex:1;min-width:100px;border-bottom:none;flex-direction:column;align-items:flex-start;gap:2px}
  .data-divider,.data-recent{display:none}
  .form-row{grid-template-columns:1fr}
  .form-wrapper{padding:28px 20px}
  .tech-grid,.cases-grid,.func-grid{grid-template-columns:1fr}
  .ind-grid{grid-template-columns:1fr}
  .pain-grid{grid-template-columns:1fr}
  .showcase-grid{grid-template-columns:repeat(2,1fr)}
  .form-promise{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .key-data{grid-template-columns:1fr}
}
@media(max-width:520px){
  .showcase-grid{grid-template-columns:1fr}
  .form-promise{grid-template-columns:1fr 1fr}
  .nav-cta span{display:none}
}