:root{--bg: #f4f7fc;--bg-elevated: #ffffff;--card: rgba(255, 255, 255, .92);--text: #0f172a;--text-strong: #090d16;--muted: #475569;--subtle: #64748b;--line: rgba(15, 23, 42, .08);--line-strong: rgba(15, 23, 42, .14);--blue: #2b67f6;--blue-hover: #1f55df;--soft-blue: rgba(37, 99, 235, .08);--blue-border: rgba(37, 99, 235, .2);--shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, .05), 0 6px 20px -4px rgba(15, 23, 42, .04);--shadow-md: 0 12px 32px -8px rgba(15, 23, 42, .08), 0 4px 12px -2px rgba(15, 23, 42, .04);--shadow-lg: 0 24px 56px -12px rgba(15, 23, 42, .12), 0 8px 24px -4px rgba(15, 23, 42, .05);--shadow-floating: 0 16px 40px -10px rgba(15, 23, 42, .12), 0 4px 12px -2px rgba(15, 23, 42, .05);--radius-sm: 12px;--radius-md: 20px;--radius-lg: 28px;--radius-xl: 32px;--radius-full: 999px;--container-max: 1140px;--ease-out-expo: cubic-bezier(.22, 1, .36, 1)}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:clip}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:var(--text);background-color:var(--bg);background-image:radial-gradient(ellipse 72% 48% at 78% -10%,rgba(43,103,246,.11),transparent 68%),radial-gradient(ellipse 48% 38% at -8% 24%,rgba(96,165,250,.065),transparent 72%);min-height:100vh;line-height:1.65;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-synthesis:weight;overflow-x:clip}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}:focus-visible{outline:2px solid var(--blue);outline-offset:3px}.page-container{max-width:var(--container-max);margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 24px;border-radius:var(--radius-full);font-weight:700;font-size:15px;letter-spacing:-.01em;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease-out-expo),box-shadow .2s var(--ease-out-expo),background-color .16s ease,border-color .16s ease,color .16s ease;user-select:none;white-space:nowrap}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background:#0f172a;color:#fff;box-shadow:0 8px 20px -6px #0f172a47}.btn-primary:hover{background:var(--blue);box-shadow:0 12px 26px -6px #2563eb5c}.btn-secondary{background:#fff;border-color:var(--line-strong);color:var(--text);box-shadow:var(--shadow-sm)}.btn-secondary:hover{border-color:#2563eb59;color:var(--blue);box-shadow:var(--shadow-md)}.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;font-weight:650}.btn-lg{min-height:52px;padding:0 28px;font-size:16px}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 13px;border-radius:var(--radius-full);background:var(--soft-blue);border:1px solid var(--blue-border);color:var(--blue);font-size:12.5px;font-weight:700;letter-spacing:.02em}.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--blue)}.section-header{text-align:center;max-width:680px;margin:0 auto 48px}.section-title{margin:0;font-size:clamp(26px,3.4vw,38px);font-weight:850;letter-spacing:-.028em;line-height:1.2;color:var(--text-strong)}.section-subtitle{margin:12px 0 0;color:var(--muted);font-size:17px;line-height:1.65}[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease-out-expo),transform .55s var(--ease-out-expo);transition-delay:var(--reveal-delay, 0ms)}[data-reveal].is-revealed{opacity:1;transform:translateY(0)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);padding:32px;box-shadow:var(--shadow-sm)}.site-header-slot{width:100%;height:88px;position:relative}.site-header-sentinel{height:1px;width:100%;pointer-events:none;visibility:hidden}.site-header{position:relative;z-index:100;width:100%;height:88px;display:flex;align-items:center;transition:opacity .2s ease,background-color .2s ease}.header-inner{max-width:var(--container-max);width:100%;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:20px}.site-header[data-floating=true]{position:fixed;top:14px;left:0;right:0;height:auto;padding:0;pointer-events:none;animation:fadeInPill .2s ease-out forwards}.site-header[data-floating=true] .header-inner{pointer-events:auto;width:min(980px,calc(100% - 32px));height:58px;padding:0 18px 0 20px;background:#ffffffe0;backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);border:1px solid rgba(15,23,42,.08);border-radius:var(--radius-full);box-shadow:var(--shadow-floating)}@keyframes fadeInPill{0%{opacity:.88}to{opacity:1}}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.02em;color:var(--text-strong)}.brand-icon{width:30px;height:30px;border-radius:8px;box-shadow:0 2px 6px #0f172a1a}.header-right{display:flex;align-items:center;gap:8px}.nav-links{display:flex;align-items:center;gap:4px}.header-divider{width:1px;height:18px;background:var(--line-strong);margin:0 6px}.nav-link{display:inline-flex;align-items:center;gap:5px;padding:7px 14px;border-radius:var(--radius-full);font-size:14px;font-weight:600;color:var(--muted);transition:color .15s ease,background-color .15s ease;background:transparent;border:none;cursor:pointer}.nav-link:hover{color:var(--text-strong);background:#0f172a0a}.nav-link.active{color:var(--text-strong);font-weight:700;background:#0f172a0f}.nav-arrow{font-size:9px;opacity:.6;transition:transform .2s ease}.dropdown-trigger[aria-expanded=true] .nav-arrow{transform:rotate(180deg)}.dropdown-wrap{position:relative}.dropdown-panel{position:absolute;top:calc(100% + 10px);right:0;transform:translateY(6px);opacity:0;pointer-events:none;background:#fff;border:1px solid var(--line-strong);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);padding:6px;min-width:140px;transition:opacity .16s ease,transform .16s var(--ease-out-expo);z-index:150}.dropdown-wrap.open .dropdown-panel,.dropdown-trigger[aria-expanded=true]+.dropdown-panel{opacity:1;pointer-events:auto;transform:translateY(0)}.lang-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--muted)}.lang-item:hover{background-color:#0f172a0a;color:var(--text-strong)}.lang-item.active{color:var(--blue);background-color:var(--soft-blue)}.mobile-toggle{display:none;background:#fff;border:1px solid var(--line-strong);border-radius:10px;padding:8px;cursor:pointer;color:var(--text)}.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(300px,86vw);background:#fff;box-shadow:-10px 0 36px #0f172a29;z-index:300;transform:translate(105%);visibility:hidden;transition:transform .25s var(--ease-out-expo),visibility .25s;display:flex;flex-direction:column;padding:24px}.mobile-drawer.open{transform:translate(0);visibility:visible}.drawer-backdrop{position:fixed;inset:0;background:#0f172a66;backdrop-filter:blur(3px);z-index:299;opacity:0;pointer-events:none;transition:opacity .22s ease}.drawer-backdrop.open{opacity:1;pointer-events:auto}.drawer-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.drawer-close{background:#0f172a0d;border:none;width:34px;height:34px;border-radius:50%;font-size:15px;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center}.drawer-links{display:flex;flex-direction:column;gap:6px}.drawer-link{font-size:15.5px;font-weight:700;color:var(--text);padding:12px 10px;border-radius:10px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.drawer-link.active,.drawer-link:hover{background:var(--soft-blue);color:var(--blue)}.drawer-lang-section{margin-top:16px;padding-top:16px}.drawer-lang-title{font-size:12px;font-weight:700;color:var(--subtle);margin-bottom:10px}.drawer-lang-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.site-footer{margin-top:72px;border-top:1px solid var(--line);background:#ffffffa6;padding:36px 0}.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px}.footer-brand{display:flex;flex-direction:column;gap:8px}.footer-desc{margin:0;font-size:13.5px;color:var(--muted)}.footer-right{display:flex;flex-direction:column;align-items:flex-end;gap:8px}.footer-nav{display:flex;align-items:center;flex-wrap:wrap;gap:16px;font-size:14px;font-weight:600;color:var(--muted)}.footer-nav a:hover,.footer-nav a.active-lang{color:var(--text-strong)}.footer-sep{color:var(--line-strong)}.footer-copy{font-size:13px;color:var(--subtle)}@media(max-width:760px){.nav-links,.header-divider,.lang-dropdown-wrap{display:none}.mobile-toggle{display:flex;align-items:center;justify-content:center}.footer-inner{flex-direction:column;align-items:flex-start}.footer-right{align-items:flex-start}}@media(max-width:560px){.page-container{padding:0 16px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}[data-reveal]{opacity:1!important;transform:none!important}}astro-dev-toolbar{display:none!important}