/* ============================================
   Daylight Template — 日光蓝白亮色风格 (Daylight Blue Light)
   Colors: Royal Blue #2563EB + Amber CTA #D97706 + Light BG #F8FAFC
   Font: Montserrat headings + Inter body (system fallback)
   CSS Prefix: dlt
   WCAG AA: text #1E293B on bg #F8FAFC = 15.3:1 ✓ | #2563EB on #fff = 5.2:1 ✓
   ============================================ */
:root{--dlt-primary:#2563EB;--dlt-primary-light:#3B82F6;--dlt-primary-dark:#1D4ED8;--dlt-cta:#D97706;--dlt-cta-hover:#B45309;--dlt-cta-disabled:#FED7AA;--dlt-bg:#F8FAFC;--dlt-bg2:#fff;--dlt-bg3:#F1F5F9;--dlt-card:#fff;--dlt-text:#1E293B;--dlt-text-sec:#475569;--dlt-text-muted:#64748B;--dlt-border:#E2E8F0;--dlt-border-h:#93C5FD;--dlt-border-strong:#2563EB;--dlt-radius:8px;--dlt-radius-sm:6px;--dlt-shadow:0 1px 4px rgba(37,99,235,.06);--dlt-shadow-lg:0 8px 24px rgba(37,99,235,.1);--dlt-font-heading:"Montserrat","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--dlt-font-body:"Inter","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--dlt-transition:all .25s ease}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{font-family:var(--dlt-font-body);font-size:16px;line-height:1.7;color:var(--dlt-text);background:var(--dlt-bg);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:var(--dlt-transition)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
h1,h2,h3,h4{font-family:var(--dlt-font-heading);font-weight:700;line-height:1.25;color:var(--dlt-text);letter-spacing:-.3px}
.dlt-container{max-width:1200px;margin:0 auto;padding:0 24px}
.dlt-nav{position:fixed;top:0;left:0;right:0;z-index:1000;display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--dlt-border);transition:var(--dlt-transition)}
.dlt-nav.scrolled{box-shadow:0 2px 12px rgba(0,0,0,.04)}
.dlt-logo{display:flex;align-items:center;gap:10px;font-family:var(--dlt-font-heading);font-weight:700;font-size:1.15rem;color:var(--dlt-text)}
.dlt-logo-icon{width:34px;height:34px;background:linear-gradient(135deg,var(--dlt-primary),var(--dlt-primary-light));border-radius:var(--dlt-radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}
.dlt-logo-icon svg{width:20px;height:20px}
.dlt-nav-links{display:flex;gap:28px}
.dlt-nav-links a{font-size:.9rem;font-weight:500;color:var(--dlt-text-sec);position:relative}
.dlt-nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--dlt-primary);transition:width .25s}
.dlt-nav-links a:hover{color:var(--dlt-primary)}
.dlt-nav-links a:hover::after{width:100%}
.dlt-nav-cta{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;background:var(--dlt-cta);color:#fff;border-radius:var(--dlt-radius-sm);font-size:.86rem;font-weight:600;cursor:pointer}
.dlt-nav-cta:hover{background:var(--dlt-cta-hover);box-shadow:0 4px 12px rgba(217,119,6,.3)}
.dlt-nav-cta:disabled{background:var(--dlt-cta-disabled);cursor:not-allowed}
.dlt-mobile-btn{display:none;background:none;border:none;cursor:pointer;color:var(--dlt-primary);padding:4px}
.dlt-hero{position:relative;padding:130px 0 80px;overflow:hidden;background:linear-gradient(135deg,#EFF6FF 0%,#fff 50%,#FFFBEB 100%)}
.dlt-hero-bg-wrap{position:absolute;inset:0;z-index:0}
.dlt-hero-bg-img{width:100%;height:100%;object-fit:cover;object-position:center}
.dlt-hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(248,250,252,.95) 0%,rgba(248,250,252,.88) 50%,rgba(248,250,252,.97) 100%)}
.dlt-hero-inner{position:relative;z-index:1;max-width:720px}
.dlt-hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:center}
.dlt-hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;background:rgba(37,99,235,.08);border:1px solid var(--dlt-border-h);border-radius:20px;font-size:.8rem;font-weight:600;color:var(--dlt-primary-dark);margin-bottom:22px}
.dlt-hero-badge .dlt-dot{width:7px;height:7px;background:var(--dlt-primary);border-radius:50%;animation:dlt-pulse 2s infinite}
@keyframes dlt-pulse{0%,100%{opacity:1}50%{opacity:.4}}
.dlt-hero h1{font-size:2.6rem;margin-bottom:20px}
.dlt-hero h1 .dlt-accent{color:var(--dlt-primary)}
.dlt-hero-desc{font-size:1.02rem;color:var(--dlt-text-sec);margin-bottom:32px;max-width:520px;line-height:1.85}
.dlt-hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.dlt-btn-cta{display:inline-flex;align-items:center;gap:8px;padding:14px 34px;background:var(--dlt-cta);color:#fff;border-radius:var(--dlt-radius-sm);font-weight:700;font-size:.95rem;cursor:pointer;border:none;transition:var(--dlt-transition)}
.dlt-btn-cta:hover{background:var(--dlt-cta-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(217,119,6,.3)}
.dlt-btn-cta:disabled{background:var(--dlt-cta-disabled);cursor:not-allowed;transform:none}
.dlt-btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:14px 30px;background:#fff;color:var(--dlt-text);border:1px solid var(--dlt-border);border-radius:var(--dlt-radius-sm);font-weight:600;font-size:.95rem;cursor:pointer}
.dlt-btn-ghost:hover{border-color:var(--dlt-primary);color:var(--dlt-primary)}
.dlt-btn-ghost:disabled{opacity:.5;cursor:not-allowed}
.dlt-hero-nums{display:flex;align-items:center;gap:28px}
.dlt-hn-v{display:block;font-size:1.5rem;font-weight:700;color:var(--dlt-primary);font-family:var(--dlt-font-heading)}
.dlt-hn-l{font-size:.74rem;color:var(--dlt-text-muted)}
.dlt-hn-sep{width:1px;height:32px;background:var(--dlt-border)}
.dlt-hero-visual{position:relative}
.dlt-hero-img{border-radius:var(--dlt-radius);overflow:hidden;box-shadow:var(--dlt-shadow-lg);border:1px solid var(--dlt-border)}
.dlt-hero-img img{width:100%;height:340px;object-fit:cover}
.dlt-hero-float{position:absolute;bottom:-14px;left:-14px;background:#fff;border:1px solid var(--dlt-border);border-radius:var(--dlt-radius-sm);padding:14px 18px;display:flex;align-items:center;gap:10px;box-shadow:var(--dlt-shadow-lg)}
.dlt-hero-float strong{font-size:1.2rem;color:var(--dlt-primary);font-family:var(--dlt-font-heading)}
.dlt-hero-float span{font-size:.75rem;color:var(--dlt-text-muted)}
.dlt-trust{padding:22px 0;background:var(--dlt-bg2);border-bottom:1px solid var(--dlt-border)}
.dlt-trust-inner{display:flex;justify-content:center;gap:38px;flex-wrap:wrap}
.dlt-trust-item{display:flex;align-items:center;gap:8px;font-size:.84rem;font-weight:500;color:var(--dlt-text-sec)}
.dlt-trust-item svg{color:var(--dlt-primary);flex-shrink:0}
.dlt-section{padding:90px 0}
.dlt-section-alt{background:var(--dlt-bg2)}
.dlt-sec-header{text-align:center;margin-bottom:54px}
.dlt-sec-tag{display:inline-block;padding:4px 14px;background:rgba(37,99,235,.06);color:var(--dlt-primary-dark);border:1px solid var(--dlt-border-h);border-radius:4px;font-size:.74rem;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:14px}
.dlt-sec-header h2{font-size:2rem;margin-bottom:12px}
.dlt-sec-header h2 .dlt-h-accent{color:var(--dlt-primary)}
.dlt-sec-header p{font-size:.9rem;color:var(--dlt-text-sec);max-width:560px;margin:0 auto}
.dlt-feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dlt-feat-card{padding:28px 24px;background:var(--dlt-card);border:1px solid var(--dlt-border);border-radius:var(--dlt-radius);transition:var(--dlt-transition);cursor:pointer;position:relative;overflow:hidden}
.dlt-feat-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:var(--dlt-primary);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.dlt-feat-card:hover{box-shadow:var(--dlt-shadow-lg);border-color:var(--dlt-border-h);transform:translateY(-4px)}
.dlt-feat-card:hover::before{transform:scaleX(1)}
.dlt-feat-icon{width:46px;height:46px;display:flex;align-items:center;justify-content:center;background:rgba(37,99,235,.06);border-radius:var(--dlt-radius-sm);margin-bottom:16px}
.dlt-feat-icon svg{width:22px;height:22px;stroke:var(--dlt-primary)}
.dlt-feat-card h3{font-size:1.02rem;margin-bottom:8px}
.dlt-feat-card p{font-size:.85rem;color:var(--dlt-text-sec);line-height:1.75}
.dlt-svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.dlt-svc-card{display:flex;flex-direction:column;background:var(--dlt-card);border:1px solid var(--dlt-border);border-radius:var(--dlt-radius);overflow:hidden;transition:var(--dlt-transition);cursor:pointer}
.dlt-svc-card:hover{box-shadow:var(--dlt-shadow-lg);border-color:var(--dlt-border-h);transform:translateY(-3px)}
.dlt-svc-img{height:190px;overflow:hidden}
.dlt-svc-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.dlt-svc-card:hover .dlt-svc-img img{transform:scale(1.04)}
.dlt-svc-body{padding:24px 26px}
.dlt-svc-body h3{font-size:1.02rem;margin-bottom:8px}
.dlt-svc-body p{font-size:.85rem;color:var(--dlt-text-sec);line-height:1.75;margin-bottom:12px}
.dlt-svc-link{color:var(--dlt-primary);font-size:.84rem;font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:var(--dlt-transition)}
.dlt-svc-link:hover{gap:8px;color:var(--dlt-primary-dark)}
.dlt-about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.dlt-about-img{position:relative;border-radius:var(--dlt-radius);overflow:hidden;border:1px solid var(--dlt-border);box-shadow:var(--dlt-shadow-lg)}
.dlt-about-img img{width:100%;height:400px;object-fit:cover}
.dlt-about-float{position:absolute;bottom:-16px;right:-16px;background:var(--dlt-cta);color:#fff;border-radius:var(--dlt-radius-sm);padding:16px 22px;text-align:center;box-shadow:0 8px 24px rgba(217,119,6,.3)}
.dlt-about-float .dlt-af-num{font-size:1.5rem;font-weight:700;display:block;font-family:var(--dlt-font-heading)}
.dlt-about-float .dlt-af-label{font-size:.72rem;opacity:.85}
.dlt-about-text .dlt-sec-tag{margin-bottom:12px}
.dlt-about-text h2{font-size:1.8rem;margin-bottom:16px}
.dlt-about-text p{color:var(--dlt-text-sec);margin-bottom:14px;font-size:.88rem;line-height:1.85}
.dlt-link{display:inline-flex;align-items:center;gap:6px;color:var(--dlt-primary);font-weight:600;font-size:.88rem}
.dlt-link:hover{gap:10px;color:var(--dlt-primary-dark)}
.dlt-steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.dlt-step-card{text-align:center;padding:32px 18px;background:var(--dlt-card);border:1px solid var(--dlt-border);border-radius:var(--dlt-radius);transition:var(--dlt-transition)}
.dlt-step-card:hover{box-shadow:var(--dlt-shadow);border-color:var(--dlt-border-h);transform:translateY(-4px)}
.dlt-step-num{font-size:2.2rem;font-weight:700;color:var(--dlt-primary);opacity:.15;margin-bottom:8px;font-family:var(--dlt-font-heading)}
.dlt-step-card h3{font-size:.96rem;margin-bottom:6px}
.dlt-step-card p{font-size:.8rem;color:var(--dlt-text-muted)}
.dlt-testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dlt-testi-card{padding:28px 24px;background:var(--dlt-card);border:1px solid var(--dlt-border);border-radius:var(--dlt-radius);transition:var(--dlt-transition)}
.dlt-testi-card:hover{box-shadow:var(--dlt-shadow);transform:translateY(-3px)}
.dlt-testi-stars{color:var(--dlt-cta);font-size:.84rem;margin-bottom:14px;letter-spacing:2px}
.dlt-testi-card>p{font-size:.85rem;color:var(--dlt-text-sec);line-height:1.8;margin-bottom:16px}
.dlt-testi-author{display:flex;align-items:center;gap:10px}
.dlt-ta-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--dlt-primary),var(--dlt-primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem}
.dlt-testi-author strong{font-size:.82rem;display:block;color:var(--dlt-text)}
.dlt-testi-author span{font-size:.72rem;color:var(--dlt-text-muted)}
.dlt-faq-layout{display:grid;grid-template-columns:1fr 2fr;gap:60px}
.dlt-faq-side{position:sticky;top:100px;align-self:start}
.dlt-faq-side .dlt-sec-tag{margin-bottom:12px}
.dlt-faq-side h2{font-size:1.7rem;margin-bottom:14px}
.dlt-faq-side p{font-size:.85rem;color:var(--dlt-text-sec);line-height:1.8}
.dlt-faq-main{display:flex;flex-direction:column;gap:10px}
.dlt-faq-item{background:var(--dlt-card);border:1px solid var(--dlt-border);border-radius:var(--dlt-radius-sm);overflow:hidden;transition:var(--dlt-transition)}
.dlt-faq-item:hover{border-color:var(--dlt-border-h)}
.dlt-faq-item.active{border-color:var(--dlt-primary)}
.dlt-faq-q{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;cursor:pointer;font-weight:600;font-size:.88rem;color:var(--dlt-text)}
.dlt-faq-q svg{flex-shrink:0;stroke:var(--dlt-primary);transition:transform .3s}
.dlt-faq-item.active .dlt-faq-q svg{transform:rotate(180deg)}
.dlt-faq-a{padding:0 22px;max-height:0;overflow:hidden;transition:max-height .3s,padding .3s;font-size:.85rem;color:var(--dlt-text-sec);line-height:1.8}
.dlt-faq-item.active .dlt-faq-a{padding:0 22px 16px;max-height:240px}
.dlt-recommend{padding:70px 0}
.dlt-recommend-grid{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.dlt-recommend-grid a{display:inline-block;padding:9px 18px;background:var(--dlt-card);border:1px solid var(--dlt-border);border-radius:var(--dlt-radius-sm);font-size:.83rem;color:var(--dlt-text-sec);transition:var(--dlt-transition);cursor:pointer}
.dlt-recommend-grid a:hover{color:var(--dlt-primary);border-color:var(--dlt-primary);transform:translateY(-2px)}
.dlt-cta-sec{padding:80px 0;background:linear-gradient(135deg,var(--dlt-primary),var(--dlt-primary-dark))}
.dlt-cta-box{text-align:center;max-width:620px;margin:0 auto}
.dlt-cta-box h2{font-size:1.9rem;margin-bottom:12px;color:#fff}
.dlt-cta-box p{font-size:.92rem;color:rgba(255,255,255,.8);margin-bottom:30px}
.dlt-footer{padding:52px 0 0;background:#1E293B;color:rgba(255,255,255,.7)}
.dlt-footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.dlt-footer-desc{font-size:.82rem;color:rgba(255,255,255,.5);margin-top:14px;line-height:1.8;max-width:400px}
.dlt-footer-nav h4{color:#fff;font-size:.88rem;margin-bottom:16px;font-family:var(--dlt-font-heading)}
.dlt-footer-nav li{margin-bottom:9px}
.dlt-footer-nav a{font-size:.82rem;color:rgba(255,255,255,.5)}
.dlt-footer-nav a:hover{color:rgba(255,255,255,.9)}
.dlt-footer-bottom{padding:22px 0;text-align:center;font-size:.76rem;color:rgba(255,255,255,.4)}
.dlt-page-hero{padding:140px 0 60px;text-align:center}
.dlt-page-hero h1{font-size:2.5rem;margin-bottom:12px}
.dlt-page-hero p{font-size:.92rem;color:var(--dlt-text-sec)}
@media(max-width:1024px){.dlt-hero-grid{grid-template-columns:1fr;gap:40px}.dlt-hero-visual{display:none}.dlt-hero h1{font-size:2.2rem}.dlt-feat-grid{grid-template-columns:repeat(2,1fr)}.dlt-svc-grid{grid-template-columns:1fr}.dlt-about-grid{grid-template-columns:1fr}.dlt-faq-layout{grid-template-columns:1fr}.dlt-faq-side{position:static;text-align:center}.dlt-footer-top{grid-template-columns:1fr 1fr}.dlt-steps-grid{grid-template-columns:repeat(2,1fr)}.dlt-testi-grid{grid-template-columns:1fr}}
@media(max-width:768px){.dlt-nav{padding:10px 16px;flex-wrap:wrap}.dlt-nav-links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--dlt-border);padding:12px 16px;gap:0;box-shadow:var(--dlt-shadow-lg)}.dlt-nav-links.active{display:flex}.dlt-nav-links li{border-bottom:1px solid var(--dlt-border)}.dlt-nav-links li:last-child{border-bottom:none}.dlt-nav-links a{display:block;padding:12px 0}.dlt-nav-cta{display:none}.dlt-mobile-btn{display:block}.dlt-hero{padding:110px 0 60px}.dlt-hero h1{font-size:1.8rem}.dlt-hero-actions{flex-direction:column}.dlt-btn-cta,.dlt-btn-ghost{width:100%;justify-content:center}.dlt-hero-nums{flex-wrap:wrap;gap:16px}.dlt-hn-sep{display:none}.dlt-feat-grid{grid-template-columns:1fr}.dlt-sec-header h2{font-size:1.5rem}.dlt-section{padding:60px 0}.dlt-cta-box{padding:0 20px}.dlt-footer-top{grid-template-columns:1fr;gap:28px}.dlt-page-hero h1{font-size:1.9rem}}
@media(max-width:480px){.dlt-steps-grid{grid-template-columns:1fr}.dlt-trust-inner{gap:16px}}