:root{--blue: #1f6feb;--blue-deep: #1a56c2;--blue-pale: #eff5ff;--green: #2ea043;--green-pale: #e6f7eb;--amber: #d97706;--amber-pale: #fef3c7;--ink: #1a1f26;--ink-soft: #5a6473;--ink-mute: #8b94a3;--paper: #ffffff;--canvas: #fafbfc;--line: #e4e8ee;--line-soft: #eef1f5}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Inter,system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.6;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5{font-family:Inter,system-ui,sans-serif;font-weight:700;line-height:1.15;color:var(--ink);letter-spacing:-.02em}h1{font-size:clamp(2.2rem,5vw,3.4rem);letter-spacing:-.03em}h2{font-size:clamp(1.6rem,3.2vw,2.1rem);margin-top:3rem;margin-bottom:1rem}h3{font-size:1.25rem;margin-top:2rem;margin-bottom:.6rem}h4{font-size:1rem}p{margin-bottom:1rem;color:var(--ink-soft)}a{color:var(--blue);text-decoration:none}a:hover{color:var(--blue-deep);text-decoration:underline}img{max-width:100%;height:auto;display:block}strong,b{color:var(--ink);font-weight:600}code{font-family:SF Mono,Menlo,Consolas,monospace;font-size:.9em;background:var(--canvas);padding:.1em .35em;border-radius:3px;border:1px solid var(--line)}ul,ol{margin:0 0 1rem 1.5rem;color:var(--ink-soft)}li{margin-bottom:.4rem}.site-header{background:#ffffffeb;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100;backdrop-filter:saturate(1.4) blur(12px)}.header-inner{max-width:1140px;margin:0 auto;padding:.9rem 1.5rem;display:flex;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:.55rem;color:var(--ink);font-weight:700;text-decoration:none}.brand:hover{text-decoration:none;color:var(--ink)}.brand-mark{display:inline-flex;align-items:center}.brand-name{font-size:1.1rem;letter-spacing:-.015em}.main-nav{display:flex;gap:1.6rem;align-items:center}.main-nav a{color:var(--ink-soft);font-size:.95rem;font-weight:500;padding:.3rem 0}.main-nav a:hover{color:var(--blue);text-decoration:none}.main-nav .btn-nav{background:var(--blue);color:#fff;padding:.55rem 1rem;border-radius:6px;font-weight:600}.main-nav .btn-nav:hover{background:var(--blue-deep);color:#fff}.wrap{max-width:1140px;margin:0 auto;padding:0 1.5rem}.wrap-narrow{max-width:760px;margin:0 auto;padding:0 1.5rem}.wrap-wide{max-width:1240px;margin:0 auto;padding:0 1.5rem}.btn{display:inline-block;padding:.85rem 1.5rem;font-weight:600;font-size:.95rem;border-radius:7px;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:all .15s ease;font-family:inherit}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-deep);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 6px 16px -4px #1f6feb59}.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}.btn-ghost:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}.badge{display:inline-block;padding:.3rem .7rem;background:var(--blue-pale);color:var(--blue-deep);border-radius:100px;font-size:.78rem;font-weight:600;letter-spacing:.01em}.badge-green{background:var(--green-pale);color:var(--green)}.badge-amber{background:var(--amber-pale);color:var(--amber)}.card{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:1.5rem}section{padding:4rem 0}section.compact{padding:2.5rem 0}.site-footer{background:var(--canvas);margin-top:5rem;padding-top:3rem;border-top:1px solid var(--line)}.footer-inner{max-width:1140px;margin:0 auto;padding:0 1.5rem;display:grid;grid-template-columns:1fr 2fr;gap:3rem}.footer-brand p{margin-top:.7rem;font-size:.9rem;max-width:320px}.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}.footer-cols h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-mute);margin-bottom:.8rem;font-weight:700}.footer-cols a{display:block;color:var(--ink-soft);font-size:.9rem;padding:.25rem 0}.footer-cols a:hover{color:var(--blue);text-decoration:none}.footer-bottom{max-width:1140px;margin:2.5rem auto 0;padding:1.3rem 1.5rem;border-top:1px solid var(--line);text-align:center;color:var(--ink-mute);font-size:.85rem}.footer-bottom .lang-switch{margin-left:.4rem}.footer-bottom .lang-switch a{color:var(--ink-mute)}.footer-bottom .lang-switch a:hover{color:var(--blue)}@media(max-width:760px){.main-nav{gap:.9rem;font-size:.85rem}.main-nav a:not(.btn-nav){display:none}.brand-name{font-size:1rem}.footer-inner{grid-template-columns:1fr;gap:2rem}.footer-cols{grid-template-columns:repeat(2,1fr)}section{padding:3rem 0}}