:root{--bg: #f4f5fa;--side: #eef0f7;--card: #ffffff;--line: #e3e5ee;--ink: #1d1f2b;--mute: #666a7a;--faint: #a3a6b4;--grad: linear-gradient(118deg, #7c5cf0 0%, #5b6cf6 45%, #3f8df5 100%);--glow: rgba(91, 108, 246, .28);--acc: #5b6cf6;--acc-bg: #eef0ff;--warn: #e2508f;--warn-bg: #ffe8f2;--ok: #1fa572;--ok-bg: #e3f7ee;--amber: #c98a00;--amber-bg: #fff3c9;--night: #0d0e1a;--night-mute: #a9abc0;--shadow: 0 1px 2px rgba(20, 22, 40, .05), 0 10px 30px rgba(20, 22, 40, .07);--shadow-lg: 0 2px 6px rgba(20, 22, 40, .06), 0 24px 60px rgba(20, 22, 40, .12);--haze: radial-gradient(60% 50% at 70% 0%, rgba(124, 92, 240, .14), transparent 70%);--r-card: 24px;--r-ctl: 14px;--font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--safe-t: env(safe-area-inset-top, 0px);--safe-b: env(safe-area-inset-bottom, 0px);--gutter-l: max(16px, env(safe-area-inset-left, 0px));--gutter-r: max(16px, env(safe-area-inset-right, 0px))}*,*:before,*:after{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--ink);font:15px/1.55 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.03em;line-height:1.08;text-wrap:balance}p{margin:0}a{color:inherit}button,input,textarea,select{font:inherit;color:inherit}img,svg{max-width:100%}:focus-visible{outline:3px solid color-mix(in srgb,var(--acc) 55%,transparent);outline-offset:2px;border-radius:10px}::selection{background:color-mix(in srgb,var(--acc) 22%,transparent)}.gt{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.card{background:var(--card);border-radius:var(--r-card);box-shadow:var(--shadow);padding:20px}.card-h{display:flex;align-items:center;gap:10px;font:700 12px var(--font);letter-spacing:.07em;text-transform:uppercase;color:var(--mute);margin-bottom:12px}.card-h svg{width:24px;height:24px;flex:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:var(--r-ctl);padding:12px 18px;font:700 15px var(--font);cursor:pointer;text-decoration:none;transition:transform .12s ease,box-shadow .2s ease,background .2s}.btn:active{transform:translateY(1px) scale(.99)}.btn[disabled]{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px var(--glow)}.btn-primary:hover{box-shadow:0 12px 30px var(--glow)}.btn-ghost{background:var(--card);color:var(--ink);border:1.5px solid var(--line)}.btn-ghost:hover{border-color:color-mix(in srgb,var(--acc) 40%,var(--line))}.btn-quiet{background:transparent;color:var(--mute);padding:10px 12px}.btn-lg{padding:16px 24px;font-size:16px;border-radius:18px}.btn-block{width:100%}.field{width:100%;border:1.5px solid var(--line);background:var(--card);border-radius:18px;padding:14px 16px;font-size:16px;outline:none;transition:border-color .15s,box-shadow .15s}.field:focus{border-color:var(--acc);box-shadow:0 0 0 4px color-mix(in srgb,var(--acc) 14%,transparent)}textarea.field{resize:vertical;min-height:120px;line-height:1.55}.chip{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 10px;font:700 12px var(--font);background:var(--acc-bg);color:var(--acc)}.chip-warn{background:var(--warn-bg);color:var(--warn)}.chip-ok{background:var(--ok-bg);color:var(--ok)}.chip-amber{background:var(--amber-bg);color:var(--amber)}.ico{display:inline-block;flex:none}.demo-flag{position:fixed;z-index:50;right:calc(12px + env(safe-area-inset-right,0px));bottom:calc(12px + var(--safe-b));background:var(--night);color:#fff;border-radius:999px;padding:8px 14px;font:700 12px var(--font);box-shadow:var(--shadow-lg)}.fade-in{animation:fadeIn .35s ease both}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.spin{width:18px;height:18px;border-radius:50%;border:2.5px solid currentColor;border-right-color:transparent;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation:none!important;transition:none!important}}.shell{display:grid;grid-template-columns:252px minmax(0,1fr);min-height:100vh;min-height:100dvh;background:var(--bg);position:relative}.shell:before{content:"";position:absolute;inset:0 0 auto 252px;height:280px;background:var(--haze);pointer-events:none}.shell-side{position:sticky;top:0;height:100vh;height:100dvh;display:flex;flex-direction:column;gap:6px;padding:20px 16px calc(16px + var(--safe-b));background:var(--side);border-right:1px solid var(--line)}.shell-logo{margin:4px 6px 16px}.shell-new{margin-bottom:12px}.shell-nav{display:grid;gap:4px}.shell-link{display:flex;align-items:center;gap:12px;padding:8px 10px;border-radius:14px;font:600 15px var(--font);color:var(--ink);text-decoration:none;transition:background .15s}.shell-link:hover{background:color-mix(in srgb,var(--card) 60%,transparent)}.shell-link.on{background:var(--card);box-shadow:var(--shadow)}.shell-foot{margin-top:auto;display:grid;gap:8px}.shell-plan{display:block;background:var(--card);border-radius:18px;padding:14px;box-shadow:var(--shadow);text-decoration:none;color:var(--mute);font-size:13px}.shell-plan b{display:block;color:var(--ink);font-size:14px}.shell-bar{display:block;height:6px;border-radius:9px;background:var(--line);margin-top:10px;overflow:hidden}.shell-bar i{display:block;height:100%;background:var(--grad);border-radius:9px}.shell-main{position:relative;min-width:0;padding:28px clamp(16px,3vw,36px) 48px}.shell-tabs{display:none}@media (max-width: 860px){.shell{grid-template-columns:1fr}.shell:before{left:0}.shell-side{display:none}.shell-main{padding:calc(18px + var(--safe-t)) var(--gutter-r) calc(96px + var(--safe-b)) var(--gutter-l)}.shell-tabs{display:grid;grid-template-columns:repeat(3,1fr);position:fixed;z-index:40;left:0;right:0;bottom:0;padding:8px var(--gutter-r) calc(8px + var(--safe-b)) var(--gutter-l);background:color-mix(in srgb,var(--card) 92%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--line)}.shell-tab{display:grid;justify-items:center;gap:2px;padding:4px;border-radius:12px;text-decoration:none;color:var(--mute);font:700 11px var(--font)}.shell-tab.on{color:var(--ink);background:var(--acc-bg)}}.shell-demo{position:relative;z-index:1;margin:0 0 16px;padding:8px 12px;border-radius:12px;background:var(--amber-bg);color:var(--amber);font:600 12.5px var(--font)}.shell-demo b{color:var(--ink)}.shell-demo a{color:inherit;font-weight:700}