:root{--brand:#1497D0;--brand-dark:#0E7CB0;--brand-deep:#0A5F87;--brand-soft:#EAF5FB;--brand-mist:#F4FBFF;--brand-tint-2:#D5EBF6;--accent:#E67C33;--ink:#0B2233;--ink-2:#4A5766;--ink-3:#6B7784;--line:#E4E9EF;--line-2:#EEF2F6;--bg:#FFFFFF;--bg-alt:#F8FBFD;--shadow-md:0 8px 28px rgba(11,34,51,.06);--shadow-lg:0 20px 56px rgba(11,34,51,.09);--radius:14px;--radius-lg:20px;--ease:cubic-bezier(.22,.9,.22,1);--ease-out:cubic-bezier(.16,1,.3,1);--font-serif:"Source Serif 4",Georgia,serif;--font-sans:"Inter",sans-serif;--container:1200px;--gutter:40px;--section-py:64px}
*,*::before,*::after{box-sizing:border-box}html,body{margin:0;padding:0}
body{font-family:var(--font-sans);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px;overflow-x:hidden}
img,svg{display:block;max-width:100%}a{color:inherit}button{font:inherit;cursor:pointer}
.container{width:100%;max-width:calc(var(--container) + var(--gutter)*2);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--section-py) 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 36px}
.eyebrow{display:inline-flex;align-items:center;gap:14px;font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--brand);margin-bottom:22px}
.eyebrow::after{content:"";width:44px;height:2px;background:var(--brand);border-radius:2px}
.section-head .eyebrow{justify-content:center}
.section-head .eyebrow::before{content:"";width:44px;height:2px;background:var(--brand);border-radius:2px;order:-1}
.section-title{font-family:var(--font-serif);font-size:clamp(38px,3.6vw,50px);line-height:1.1;letter-spacing:-.02em;color:var(--ink);margin:0 0 18px;font-weight:700;text-wrap:balance}
.section-lead{font-size:18px;line-height:1.6;color:var(--ink-2);margin:0 auto;max-width:640px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:999px;font-family:var(--font-sans);font-size:15.5px;font-weight:600;text-decoration:none;transition:all .28s var(--ease);border:1.5px solid transparent;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(20,151,208,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 26px rgba(20,151,208,.40)}
.btn-sm{padding:11px 22px;font-size:14px}.btn-lg{padding:16px 32px;font-size:16px}
@keyframes softPulse{0%,100%{box-shadow:0 4px 14px rgba(20,151,208,.28)}50%{box-shadow:0 6px 22px rgba(20,151,208,.45),0 0 0 6px rgba(20,151,208,.08)}}
.btn-primary.is-pulse{animation:softPulse 4.6s ease-in-out infinite}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
.reveal.is-visible{opacity:1;transform:none}
.page-hero .reveal{opacity:1;transform:none}
.reveal-d1{transition-delay:.08s}.reveal-d2{transition-delay:.16s}.reveal-d3{transition-delay:.24s}.reveal-d4{transition-delay:.32s}

.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid rgba(228,233,239,.55);transition:box-shadow .3s var(--ease)}
.site-header.is-scrolled{box-shadow:0 4px 20px rgba(11,34,51,.06)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:114px;gap:56px;max-width:1440px;padding:0 48px}
.brand{display:inline-flex;align-items:center;text-decoration:none;color:var(--ink);flex-shrink:0}
.brand-logo{height:64px;width:auto;display:block;transition:opacity .22s,transform .28s}
.brand:hover .brand-logo{opacity:.9;transform:translateY(-1px)}
.nav-wrap{display:flex;align-items:center;gap:36px;margin-left:auto}
.nav-primary{display:flex;gap:6px;list-style:none;padding:0;margin:0}
.nav-primary a{display:inline-block;color:#1E3A5F;text-decoration:none;font-family:var(--font-serif);font-size:17.5px;font-weight:600;letter-spacing:-.005em;padding:10px 18px;border-radius:8px;position:relative;transition:color .22s,background .22s}
.nav-primary a::before{content:"";position:absolute;left:18px;right:18px;bottom:4px;height:1.5px;background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .34s}
.nav-primary a:hover{color:var(--brand);background:rgba(20,151,208,.05)}
.nav-primary a:hover::before{transform:scaleX(1)}
.nav-primary a.is-active{color:var(--brand)}
.nav-primary a.is-active::before{transform:scaleX(1)}
.nav-divider{width:1px;height:22px;background:var(--line);flex-shrink:0}

.page-hero{position:relative;padding:32px 0 24px;overflow:hidden}
.page-hero-banner{position:relative;width:100%;aspect-ratio:3.2/1;border-radius:20px;overflow:hidden;background:linear-gradient(135deg,#EAF5FB 0%,#D5EBF6 55%,#C2E0F0 100%);box-shadow:var(--shadow-lg)}
.page-hero-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
/* About 页面单独收紧 section 间距 */
.section{padding:64px 0}
.section-head{margin:0 auto 36px}
/* About page images */
.crumbs{font-size:13px;color:var(--ink-3);margin-bottom:36px;display:flex;align-items:center;gap:10px}
.crumbs a{color:var(--brand);text-decoration:none;border-bottom:1px solid rgba(20,151,208,.3);padding-bottom:1px}
.crumbs a:hover{border-color:var(--brand)}
.crumbs .sep{color:var(--line);opacity:.7}.crumbs .cur{color:var(--ink-2);font-weight:500}
.page-hero::before{content:"";position:absolute;top:-120px;right:-120px;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(20,151,208,.10),transparent 70%);pointer-events:none}
.hero-content{max-width:820px;margin:0 auto;text-align:center;position:relative;z-index:2}
.page-hero h1{font-family:var(--font-serif);font-size:clamp(40px,4vw,54px);line-height:1.05;letter-spacing:-.02em;color:var(--brand);margin:0 0 26px;font-weight:700}
.page-hero h1 .accent{color:var(--brand)}
.page-hero .lead{font-size:19px;line-height:1.6;color:var(--ink-2);margin:0 auto 32px;max-width:640px}
.hero-trust{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:40px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:#fff;border:1px solid var(--line);border-radius:999px;font-family:var(--font-sans);font-size:13.5px;font-weight:600;color:var(--ink)}
.hero-badge svg{width:14px;height:14px;color:var(--brand)}
.about-hero-img{aspect-ratio:4507/2044;border-radius:var(--radius-lg);overflow:hidden;margin:0 auto;max-width:760px;background:#fff;display:block;position:relative;z-index:2;box-shadow:var(--shadow-lg)}
.about-hero-img img,.about-brand-img img,.about-cta-img img,.block-image img{width:100%;height:100%;object-fit:cover;display:block}

.about-body{max-width:820px;margin:0 auto;font-family:var(--font-sans);font-size:17px;line-height:1.75;color:var(--ink-2);text-align:center}
.about-body p{margin:0 0 24px}
.about-brand-img{aspect-ratio:2151/1634;max-width:780px;margin:36px auto 0;border-radius:var(--radius-lg);overflow:hidden;background:#fff;display:block;box-shadow:var(--shadow-lg)}
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:1000px;margin:56px auto 0}
.about-stat{text-align:center;padding:22px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);transition:transform .3s,box-shadow .3s,border-color .3s}
.about-stat:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(20,151,208,.28)}
.about-stat .num{font-family:var(--font-serif);font-size:34px;font-weight:700;color:var(--brand);letter-spacing:-.02em;line-height:1;margin-bottom:10px}
.about-stat .lbl{font-family:var(--font-sans);font-size:13.5px;font-weight:600;color:var(--ink-2);line-height:1.4}

.block-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:1000px;margin:0 auto}
.block-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;transition:transform .3s,box-shadow .3s,border-color .3s;display:flex;flex-direction:column}
.block-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(20,151,208,.28)}
.block-title{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.2;margin:0 0 10px}
.block-desc{font-size:14.5px;color:var(--ink-2);line-height:1.6;margin:0 0 16px}
.block-image{width:100%;aspect-ratio:850/340;background:#fff;border-radius:10px;display:block;margin-top:auto;overflow:hidden}
.block-image img{transition:transform .45s var(--ease)}
.block-card:hover .block-image img{transform:scale(1.03)}

.next-stage{max-width:820px;margin:40px auto 0;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 30px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:inherit;transition:all .3s}
.next-stage:hover{border-color:rgba(20,151,208,.4);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.next-stage-tag{font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--brand)}
.next-stage-title{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.15;margin:6px 0 4px}
.next-stage-sub{font-size:13.5px;color:var(--ink-3);margin:0}
.next-stage-arrow{width:44px;height:44px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;transition:background .3s,color .3s,transform .3s}
.next-stage:hover .next-stage-arrow{background:var(--brand);color:#fff;transform:translateX(3px)}
.next-stage-arrow svg{width:18px;height:18px}

.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1000px;margin:0 auto}
.step-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px 24px 22px;position:relative;transition:transform .3s,box-shadow .3s,border-color .3s}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(20,151,208,.28)}
.step-num{font-family:var(--font-serif);font-size:32px;font-weight:700;color:var(--brand);letter-spacing:-.02em;line-height:1;margin-bottom:16px;font-style:italic}
.step-title{font-family:var(--font-serif);font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.008em;line-height:1.25;margin:0 0 10px}
.step-desc{font-size:14.5px;color:var(--ink-2);line-height:1.6;margin:0}

.photo-cta{position:relative;max-width:920px;margin:56px auto 0;aspect-ratio:2911/1455;border-radius:var(--radius-lg);overflow:hidden;background:radial-gradient(ellipse at center,rgba(6,36,54,.62) 0%,rgba(6,36,54,.48) 60%,rgba(6,36,54,.58) 100%),url("../images/about us/about us/How to Get Started.webp") center/cover no-repeat;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center}
.photo-cta-inner{padding:40px 44px;color:#fff;max-width:640px;text-align:center;margin:0 auto}
.photo-cta .eyebrow{color:#F4FBFF;margin-bottom:18px;justify-content:center}
.photo-cta .eyebrow::before,.photo-cta .eyebrow::after{background:#F4FBFF}
.photo-cta h2{font-family:var(--font-serif);font-size:clamp(34px,3vw,44px);line-height:1.08;letter-spacing:-.02em;color:#fff;margin:0 0 14px;font-weight:700;text-shadow:0 2px 14px rgba(0,0,0,.35)}
.photo-cta-lead{font-size:16.5px;color:rgba(255,255,255,.94);line-height:1.6;margin:0 auto 26px;max-width:44ch;text-shadow:0 1px 8px rgba(0,0,0,.30)}

.site-footer{background:linear-gradient(180deg,#F4FBFF 0%,#E4F2FA 100%);color:var(--ink-2);padding:64px 0 32px;font-size:14px;border-top:1px solid var(--line)}
.site-footer .container{max-width:1440px;padding:0 48px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:56px;margin-bottom:56px}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.footer-brand > *{align-self:flex-start}
.footer-brand .brand{display:block;width:fit-content;margin-left:-28px;margin-bottom:6px}
.footer-brand .brand-logo{height:68px;display:block;object-fit:contain;object-position:left center}
.footer-brand-statement{font-family:var(--font-serif);font-size:28px;font-weight:700;color:var(--ink);line-height:1.18;letter-spacing:-.018em;margin:0 0 28px;max-width:12em}
.footer-cta{display:inline-flex;align-items:center;gap:10px;padding:13px 26px;border:1.5px solid var(--brand);border-radius:999px;color:var(--brand);text-decoration:none;font-size:14.5px;font-weight:600;transition:all .25s}
.footer-cta:hover{background:var(--brand);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(20,151,208,.28)}
.footer-cta .arrow{transition:transform .22s}
.footer-cta:hover .arrow{transform:translateX(3px)}
.footer-col h4{font-family:var(--font-sans);font-size:16px;font-weight:700;color:var(--ink);margin:0 0 20px;padding-bottom:14px;position:relative}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:32px;height:2px;background:var(--brand);border-radius:2px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:11px}
.footer-col a{color:var(--ink-2);text-decoration:none;font-size:14.5px;font-weight:500;transition:color .22s,padding-left .22s}
.footer-col a:hover{color:var(--brand);padding-left:5px}
.footer-contact-col .footer-contact-list{display:flex;flex-direction:column;gap:16px}
.footer-contact-item{display:flex;align-items:flex-start;gap:12px;font-size:14.5px;color:var(--ink);font-weight:500;line-height:1.5}
.footer-contact-item .contact-icon{flex-shrink:0;width:22px;height:22px;color:var(--brand);margin-top:1px}
.footer-contact-item a{color:var(--ink);text-decoration:none;font-weight:500}
.footer-contact-item a:hover{color:var(--brand)}
.footer-social-divider{height:1px;background:rgba(11,34,51,.10);margin:22px 0 20px;border:none;max-width:80%}
.footer-social{display:flex;flex-direction:column;gap:14px}
.footer-social a{display:inline-flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;font-size:14.5px;font-weight:500;width:fit-content}
.footer-social a:hover{color:var(--brand)}
.footer-social .social-icon{width:30px;height:30px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;transition:transform .22s}
.footer-social .is-facebook .social-icon{background:#1877F2}
.footer-social .is-instagram .social-icon{background:radial-gradient(circle at 30% 107%,#FDF497 0%,#FDF497 5%,#FD5949 45%,#D6249F 60%,#285AEB 90%)}
.footer-social a:hover .social-icon{transform:translateY(-2px)}
.footer-social svg{width:15px;height:15px}
.footer-bottom{border-top:1px solid rgba(11,34,51,.10);padding-top:26px;display:flex;justify-content:space-between;align-items:center;gap:24px;font-size:13.5px;color:var(--ink-3)}
.footer-legal{display:flex;align-items:center;gap:20px}
.footer-legal a{color:var(--ink-3);text-decoration:none}
.footer-legal a:hover{color:var(--brand)}
.footer-legal-sep{color:rgba(11,34,51,.20);font-weight:300}

@media (max-width:1023px){body{padding:40px 24px}body>*:not(.mobile-notice){display:none !important}.mobile-notice{display:block;max-width:520px;margin:80px auto 0;text-align:center}.mobile-notice h2{font-family:var(--font-serif);font-size:26px;color:var(--ink);margin:0 0 12px;font-weight:700}.mobile-notice p{font-size:15px;color:var(--ink-2);line-height:1.6;margin:0 0 22px}.mobile-notice-btn{display:inline-flex;padding:14px 28px;background:var(--brand);color:#fff;border-radius:999px;font-size:15px;font-weight:600;text-decoration:none}}
@media (min-width:1024px){.mobile-notice{display:none}}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.btn-primary.is-pulse{animation:none}}
/* Nav dropdown */
.nav-has-menu{position:relative}
.nav-caret{width:10px;height:10px;margin-left:5px;display:inline-block;vertical-align:-1px;color:currentColor;opacity:.5;transition:transform .3s var(--ease)}
.nav-has-menu:hover .nav-caret,.nav-has-menu:focus-within .nav-caret{transform:rotate(180deg);opacity:.85}
.nav-dropdown{position:absolute;top:100%;left:-12px;min-width:238px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:0;overflow:hidden;box-shadow:0 18px 44px rgba(11,34,51,.10),0 6px 16px rgba(11,34,51,.05);opacity:0;transform:translateY(-8px);visibility:hidden;transition:opacity .28s var(--ease),transform .28s var(--ease),visibility 0s linear .28s;z-index:200}
.nav-has-menu:hover .nav-dropdown,.nav-has-menu:focus-within .nav-dropdown{opacity:1;transform:translateY(2px);visibility:visible;transition-delay:0s}
.nav-dropdown::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
.nav-dropdown-label{padding:11px 20px 9px;font-family:var(--font-sans);font-size:10px;font-weight:600;color:var(--ink-3);letter-spacing:.16em;text-transform:uppercase;border-bottom:1px solid var(--line-2);background:var(--brand-mist);opacity:.85}
/* Secondary (dropdown) items read one clear level below the primary nav:
   sans instead of serif, smaller, lighter, softer ink. Scoped under
   .nav-primary so it outranks the .nav-primary a rule above. */
.nav-primary .nav-dropdown-item{display:block;position:relative;padding:11px 20px;text-decoration:none;color:var(--ink-2);font-family:var(--font-serif);font-size:14.5px;font-weight:400;line-height:1.45;letter-spacing:.008em;background:transparent;border-radius:0;border-bottom:1px solid var(--line-2);cursor:pointer;transition:background .22s var(--ease),color .22s var(--ease),padding-left .22s var(--ease)}
.nav-primary .nav-dropdown-item:last-child{border-bottom:none}
.nav-primary .nav-dropdown-item::before{content:none !important}
.nav-primary .nav-dropdown-item::after{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--brand);transform:scaleY(0);transform-origin:center;transition:transform .26s var(--ease)}
.nav-primary .nav-dropdown-item:hover{background:var(--brand-mist);color:var(--brand);padding-left:23px}
.nav-primary .nav-dropdown-item:hover::after{transform:scaleY(1)}