:root{
  --bg:#f6f7f9;
  --surface:#ffffff;
  --surface-soft:#eef2f6;
  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --line:#dde3ea;
  --brand:#0f172a;
  --brand-2:#233047;
  --accent:#e8eef6;
  --success:#176b45;
  --radius-sm:12px;
  --radius:20px;
  --radius-lg:30px;
  --shadow:0 18px 55px rgba(15,23,42,.09);
  --wrap:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-width:320px;
  background:var(--bg);
  color:var(--ink);
  font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-underline-offset:3px}
a:focus-visible,button:focus-visible{outline:3px solid #8aa7cf;outline-offset:3px;border-radius:8px}
svg{display:block}
.wrap{width:min(var(--wrap),calc(100% - 40px));margin-inline:auto}
.skip-link{position:absolute;left:16px;top:-100px;z-index:100;padding:10px 14px;background:#fff;border:1px solid var(--line);border-radius:10px}
.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(246,247,249,.9);border-bottom:1px solid rgba(221,227,234,.86);backdrop-filter:blur(16px)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand,.footer-brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;font-weight:820;letter-spacing:-.025em}
.brand-mark{width:40px;height:40px;display:grid;place-items:center;border-radius:13px;background:var(--brand);color:#fff;font-size:20px;font-weight:900;box-shadow:0 6px 18px rgba(15,23,42,.14)}
.brand-mark.small{width:32px;height:32px;border-radius:10px;font-size:16px}
.brand-word{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:24px;font-size:14px;font-weight:650;color:var(--ink-2)}
.nav-links a{text-decoration:none;transition:color .16s ease}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink)}
.language-link{padding:7px 10px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.72)}
.hero{padding:84px 0 64px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:58px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 20px;padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.78);color:var(--ink-2);font-size:13px;font-weight:760}
.status-dot{width:8px;height:8px;border-radius:99px;background:#2c9265;box-shadow:0 0 0 4px rgba(44,146,101,.11)}
.hero h1{max-width:710px;margin:0 0 24px;font-size:clamp(46px,6.8vw,76px);line-height:1.04;letter-spacing:-.058em;font-weight:880}
.hero-copy{max-width:690px;margin:0 0 30px;color:var(--muted);font-size:19px;line-height:1.75}
.actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 20px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--ink);text-decoration:none;font-weight:760;box-shadow:0 2px 0 rgba(15,23,42,.02);transition:transform .16s ease,box-shadow .16s ease,background .16s ease}
.button:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(15,23,42,.08)}
.button.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.button .icon{width:18px;height:18px}
.phone-shell{position:relative;width:min(390px,100%);margin-left:auto;padding:10px;border-radius:43px;background:var(--brand);box-shadow:0 28px 70px rgba(15,23,42,.17)}
.phone-shell:before{content:"";position:absolute;inset:-52px -78px;z-index:-1;border-radius:50%;background:radial-gradient(circle,rgba(197,210,227,.56),rgba(246,247,249,0) 68%)}
.phone-screen{min-height:602px;padding:24px;border-radius:34px;background:linear-gradient(180deg,#fff 0%,#f8fafc 100%)}
.phone-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;font-weight:800}
.phone-menu{letter-spacing:3px;color:var(--ink-2)}
.featured-tool{padding:24px;border-radius:24px;background:var(--brand);color:#fff}
.featured-tool small{display:block;color:#b9c4d4;font-weight:650}
.featured-tool strong{display:block;margin:4px 0 8px;font-size:28px;letter-spacing:-.03em}
.featured-tool p{margin:0;color:#cbd5e1;font-size:14px}
.phone-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:13px}
.phone-card{min-height:136px;padding:18px;border:1px solid var(--line);border-radius:20px;background:#fff}
.phone-card .mini-icon{width:36px;height:36px;display:grid;place-items:center;margin-bottom:14px;border-radius:12px;background:var(--surface-soft)}
.phone-card .mini-icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.phone-card strong{display:block;margin-bottom:3px;font-size:15px}
.phone-card span{display:block;color:var(--muted);font-size:12px;line-height:1.5}
.section{padding:76px 0}
.section.alt{background:#edf1f5;border-block:1px solid var(--line)}
.section-heading{display:flex;justify-content:space-between;gap:36px;align-items:end;margin-bottom:34px}
.section-heading h2,.page-hero h1{margin:0;font-size:clamp(34px,4.6vw,50px);line-height:1.12;letter-spacing:-.045em}
.section-heading p{max-width:660px;margin:0;color:var(--muted);font-size:17px}
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.feature-card,.principle-card,.contact-card,.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.feature-card{padding:26px;min-height:236px}
.feature-icon{width:46px;height:46px;display:grid;place-items:center;margin-bottom:24px;border-radius:15px;background:var(--surface-soft);color:var(--ink)}
.feature-icon .icon{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3,.principle-card h3,.contact-card h2{margin:0 0 8px;font-size:20px;letter-spacing:-.025em}
.feature-card p,.principle-card p,.contact-card p{margin:0;color:var(--muted)}
.principle-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.principle-card{padding:26px}
.principle-card .feature-icon{margin-bottom:18px}
.launch-card{display:flex;align-items:center;justify-content:space-between;gap:34px;padding:42px;border-radius:var(--radius-lg);background:var(--brand);color:#fff;box-shadow:var(--shadow)}
.launch-card h2{margin:9px 0 8px;font-size:clamp(30px,4vw,42px);line-height:1.13;letter-spacing:-.04em}
.launch-card p{margin:0;color:#cbd5e1}
.launch-card .button{flex:0 0 auto}
.badge{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;background:#e9eef5;color:var(--ink-2);font-size:12px;font-weight:830;letter-spacing:.04em}
.launch-card .badge{background:rgba(255,255,255,.12);color:#e2e8f0}
.site-footer{padding:48px 0 28px;border-top:1px solid var(--line);background:#fff}
.footer-grid{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:start}
.footer-grid p{max-width:520px;margin:12px 0 0;color:var(--muted);font-size:14px}
.footer-links{display:grid;grid-template-columns:repeat(2,minmax(120px,auto));gap:9px 28px;font-size:14px}
.footer-links a{text-decoration:none;color:var(--ink-2)}
.footer-links a:hover{text-decoration:underline}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:34px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.page-hero{padding:66px 0 30px}
.page-hero .eyebrow{margin-bottom:16px}
.page-lead{max-width:790px;margin:16px 0 0;color:var(--muted);font-size:18px}
.page-meta{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:18px;color:var(--muted);font-size:14px}
.page-meta span{display:inline-flex;align-items:center;gap:7px}
.content-section{padding:16px 0 82px}
.legal-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:28px;align-items:start}
.toc{position:sticky;top:96px;padding:20px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.72)}
.toc strong{display:block;margin-bottom:10px;font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.toc a{display:block;padding:5px 0;color:var(--ink-2);font-size:13px;text-decoration:none}
.toc a:hover{text-decoration:underline}
.legal-card{padding:38px 42px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:0 10px 35px rgba(15,23,42,.04)}
.notice{margin:0 0 28px;padding:17px 18px;border:1px solid #cad7e6;border-radius:16px;background:#f0f5fa;color:var(--ink-2)}
.notice strong{color:var(--ink)}
.legal-card section{scroll-margin-top:96px}
.legal-card h2{margin:38px 0 12px;font-size:24px;letter-spacing:-.025em}
.legal-card h2:first-of-type{margin-top:0}
.legal-card h3{margin:25px 0 8px;font-size:18px}
.legal-card p{margin:9px 0;color:var(--ink-2)}
.legal-card ul,.legal-card ol{padding-left:22px;color:var(--ink-2)}
.legal-card li{margin:7px 0}
.legal-card a{color:#214f83}
.data-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:16px 0}
.data-card{padding:17px;border:1px solid var(--line);border-radius:16px;background:#f9fafb}
.data-card strong{display:block;margin-bottom:5px}
.data-card p{margin:0;font-size:14px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
.contact-card{padding:28px}
.contact-card .feature-icon{margin-bottom:18px}
.email-link{display:inline-block;margin-top:15px;font-weight:820;color:var(--ink)!important;text-decoration:none}
.email-link:hover{text-decoration:underline}
.support-note{margin-top:28px;padding:22px;border:1px solid var(--line);border-radius:18px;background:#fff}
.support-note h2{margin:0 0 10px;font-size:22px}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px;margin:0;padding:0;list-style:none}
.check-list li{position:relative;padding-left:24px;color:var(--ink-2)}
.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--success);font-weight:900}
.faq-list{display:grid;gap:12px;margin-top:18px}
.faq-item{padding:0 20px}
.faq-item summary{cursor:pointer;padding:18px 30px 18px 0;font-weight:770;list-style:none;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";position:absolute;right:0;top:14px;font-size:24px;color:var(--muted)}
.faq-item[open] summary:after{content:"−"}
.faq-item p{margin:0;padding:0 0 18px;color:var(--muted)}
.not-found{min-height:66vh;display:grid;place-items:center;padding:70px 0;text-align:center}
.not-found-card{max-width:680px;padding:46px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow)}
.not-found-code{font-size:72px;line-height:1;font-weight:900;letter-spacing:-.07em}
.not-found h1{margin:18px 0 8px;font-size:32px}
.not-found p{margin:0 0 24px;color:var(--muted)}
.icon{fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.muted{color:var(--muted)}
.nowrap{white-space:nowrap}
@media(max-width:900px){
  .hero{padding-top:56px}.hero-grid{grid-template-columns:1fr}.phone-shell{margin:18px auto 0}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.principle-grid{grid-template-columns:1fr}
  .legal-layout{grid-template-columns:1fr}.toc{position:static;display:grid;grid-template-columns:repeat(3,1fr);gap:4px 18px}.toc strong{grid-column:1/-1}
}
@media(max-width:650px){
  .wrap{width:min(var(--wrap),calc(100% - 24px))}.nav-inner{height:64px}.brand-mark{width:36px;height:36px;border-radius:12px}.brand-word{font-size:15px}
  .nav-links{gap:10px}.nav-links>a:not(.language-link){display:none}.language-link{display:inline-flex}
  .hero{padding:42px 0 44px}.hero h1{font-size:clamp(43px,13vw,58px);letter-spacing:-.052em}.hero-copy{font-size:17px}
  .phone-screen{min-height:540px;padding:19px}.featured-tool{padding:20px}.phone-card{min-height:125px;padding:15px}
  .section{padding:58px 0}.section-heading{display:block}.section-heading p{margin-top:12px}.feature-grid{grid-template-columns:1fr}.feature-card{min-height:auto}
  .launch-card{align-items:flex-start;flex-direction:column;padding:28px}.footer-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column;gap:6px}
  .page-hero{padding:44px 0 22px}.page-lead{font-size:16px}.content-section{padding-bottom:60px}.toc{grid-template-columns:1fr 1fr}.legal-card{padding:25px 20px;border-radius:20px}
  .data-grid,.contact-grid,.check-list{grid-template-columns:1fr}.contact-card{padding:22px}.not-found-card{padding:32px 20px}.not-found-code{font-size:58px}
}
@media print{
  .site-header,.site-footer,.toc,.actions{display:none!important}body{background:#fff}.page-hero{padding:20px 0}.content-section{padding:0}.legal-layout{display:block}.legal-card{border:0;box-shadow:none;padding:0}.wrap{width:100%}
}

.actions-center{justify-content:center}