:root{--color-primary: #25b4e9;--color-primary-soft: #50c2ef;--color-secondary: #68b548;--color-lime: #bed143;--color-teal: #307b7e;--color-link: #337ab7;--color-bg: #f1f0ec;--color-surface: #ffffff;--color-text: #28282a;--color-text-muted: #5a5a5d;--color-border: #dedad2;--font-heading: "IBM Plex Sans", sans-serif;--font-body: "IBM Plex Sans", sans-serif;--font-mono: "JetBrains Mono", monospace;--space-1: 4px;--space-2: 8px;--space-3: 16px;--space-4: 24px;--space-5: 32px;--space-6: 48px;--space-7: 64px;--space-8: 96px;--radius: 10px;--shadow-card: 0 2px 10px rgba(40, 40, 42, .08);--shadow-card-hover: 0 10px 24px rgba(40, 40, 42, .14)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-body);background:var(--color-bg);color:var(--color-text);font-weight:400;line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3,h4{font-family:var(--font-heading);font-weight:700;line-height:1.15;margin:0 0 var(--space-3);color:var(--color-text)}h1{font-size:clamp(2rem,4vw,3rem);font-weight:300}h1 strong{font-weight:800}h2{font-size:1.5rem}h3{font-size:1.15rem}p{margin:0 0 var(--space-3);color:var(--color-text)}a{color:var(--color-link)}a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px}button{font-family:inherit}code,.mono{font-family:var(--font-mono)}.site-header{background:linear-gradient(120deg,var(--color-primary) 0%,var(--color-teal) 100%);color:#fff;position:sticky;top:0;z-index:20;box-shadow:0 2px 12px #0000001f}.site-header-inner{max-width:1180px;margin:0 auto;padding:var(--space-3) var(--space-4);display:flex;align-items:center;gap:var(--space-5)}.brand{display:flex;align-items:center;gap:var(--space-2);text-decoration:none;color:#fff;flex-shrink:0}.brand img{height:28px;width:auto;filter:brightness(0) invert(1)}.brand span{font-family:var(--font-heading);font-weight:600;font-size:1.05rem;letter-spacing:.01em}.main-nav{display:flex;gap:var(--space-2);flex:1}.main-nav a{color:#ffffffe0;text-decoration:none;font-weight:500;font-size:.95rem;padding:var(--space-2) var(--space-3);border-radius:999px;transition:background .2s ease,color .2s ease}.main-nav a:hover,.main-nav a.active{background:#ffffff2e;color:#fff}.auth-status{display:flex;align-items:center;gap:var(--space-2);flex-shrink:0;font-size:.9rem}.btn{display:inline-flex;align-items:center;gap:var(--space-1);border:none;border-radius:999px;padding:10px 20px;font-weight:600;font-size:.9rem;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.btn-primary{background:#fff;color:var(--color-teal)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 16px #0000002e}.btn-ghost{background:#ffffff24;color:#fff;border:1px solid rgba(255,255,255,.4)}.btn-ghost:hover{background:#ffffff3d}.btn-secondary{background:#3f7a2b;color:#fff}.btn-secondary:hover{transform:translateY(-1px);box-shadow:0 6px 16px #3f7a2b59}main{max-width:1180px;margin:0 auto;padding:var(--space-6) var(--space-4) var(--space-8);min-height:60vh}.site-footer{background:var(--color-text);color:#ffffffbf;text-align:center;padding:var(--space-4);font-size:.85rem}.site-footer strong{color:#fff}.hero{position:relative;padding:var(--space-7) var(--space-4);margin:calc(var(--space-6) * -1) calc(var(--space-4) * -1) var(--space-6);border-radius:0 0 32px 32px;overflow:hidden;background:radial-gradient(circle at 15% 20%,rgba(37,180,233,.18),transparent 45%),radial-gradient(circle at 85% 15%,rgba(190,209,67,.22),transparent 40%),radial-gradient(circle at 60% 90%,rgba(104,181,72,.16),transparent 45%),var(--color-bg)}.hero-inner{max-width:760px}.hero h1{animation:fadeInUp .7s ease-out both}.hero p{font-size:1.1rem;color:var(--color-text-muted);animation:fadeInUp .7s ease-out .15s both}.grid{display:grid;gap:var(--space-4)}.grid-3,.grid-2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-4);box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;animation:fadeInUp .6s ease-out both}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover)}.grid-3 .card:nth-child(1){animation-delay:.1s}.grid-3 .card:nth-child(2){animation-delay:.2s}.grid-3 .card:nth-child(3){animation-delay:.3s}.card h3{color:var(--color-teal)}.product-meta{display:flex;gap:var(--space-4);margin-top:var(--space-3);padding-top:var(--space-3);border-top:1px dashed var(--color-border)}.product-meta dt{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin:0}.product-meta dd{margin:2px 0 0;font-family:var(--font-mono);font-weight:600;color:var(--color-text)}.assistant-card{margin-top:var(--space-6)}.assistant-header{display:flex;align-items:center;gap:var(--space-2)}.assistant-header .badge-ai{background:var(--color-lime);color:var(--color-text);font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:2px 8px;border-radius:999px}.bot-panel{display:flex;flex-direction:column;gap:var(--space-3)}.bot-messages{max-height:320px;overflow-y:auto;display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-3);background:var(--color-bg);border-radius:var(--radius)}.bot-msg{padding:10px 14px;border-radius:14px;max-width:80%;font-size:.92rem;animation:popIn .25s ease-out both}.bot-msg.bot{background:#fff;border:1px solid var(--color-border);align-self:flex-start;border-bottom-left-radius:4px}.bot-msg.user{background:var(--color-primary);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.bot-msg.refusal{background:#fff4e0;border:1px solid #f0c36d;align-self:flex-start;border-bottom-left-radius:4px}.bot-input-row{display:flex;gap:var(--space-2)}.bot-input-row input{flex:1;padding:12px 14px;border-radius:999px;border:1px solid var(--color-border);font-size:.95rem;font-family:var(--font-body)}.status-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:.8rem;font-weight:600;font-family:var(--font-mono)}.status-badge.status-positive{background:#68b54826;color:#3f7a2b}.status-badge.status-progress{background:#25b4e926;color:#106e93}.status-badge.status-warning{background:#f0a51e29;color:#9a6208}.status-badge.status-neutral{background:#5a5a5d1f;color:var(--color-text-muted)}.bpf-bar{display:flex;gap:4px;margin:var(--space-3) 0}.bpf-step{flex:1;text-align:center}.bpf-step-track{height:8px;border-radius:999px;background:var(--color-border);margin-bottom:6px}.bpf-step.done .bpf-step-track,.bpf-step.current .bpf-step-track{background:var(--color-secondary)}.bpf-step-label{font-size:.72rem;color:var(--color-text-muted)}.bpf-step.current .bpf-step-label{color:var(--color-text);font-weight:700}.signin-card{max-width:440px;margin:var(--space-6) auto;text-align:left}.form-row{margin-bottom:var(--space-3)}.form-row label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px;color:var(--color-text-muted)}.form-row input,.form-row select{width:100%;padding:12px 14px;border-radius:8px;border:1px solid var(--color-border);font-size:.95rem;background:var(--color-bg)}.form-textarea{width:100%;min-height:96px;padding:12px 14px;border-radius:8px;border:1px solid var(--color-border);font-size:.95rem;font-family:var(--font-body);background:var(--color-bg);resize:vertical}.cost-line-grid{display:grid;gap:var(--space-3);grid-template-columns:repeat(auto-fit,minmax(170px,1fr));border:1px dashed var(--color-border);border-radius:var(--radius);padding:var(--space-3);margin-bottom:var(--space-3)}.empty-state{padding:var(--space-5);text-align:center;color:var(--color-text-muted);border:1px dashed var(--color-border);border-radius:var(--radius);background:var(--color-surface)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes popIn{0%{opacity:0;transform:translateY(6px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}@media(max-width:700px){.site-header-inner{flex-wrap:wrap}.main-nav{order:3;width:100%;justify-content:center}}.auth-banner{padding:var(--space-3);border-radius:var(--radius);margin-bottom:var(--space-4);font-size:.92rem;border:1px solid transparent}.auth-banner-info{background:#25b4e91a;border-color:#25b4e94d;color:#106e93}.auth-banner-success{background:#68b5481f;border-color:#68b5484d;color:#3f7a2b}.auth-banner-error{background:#d844441a;border-color:#d844444d;color:#a12f2f}.field-error{display:block;margin-top:4px;font-size:.8rem;color:#a12f2f}.form-row-inline{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-3)}.checkbox-label{display:flex;align-items:center;gap:8px;font-size:.9rem;color:var(--color-text-muted);cursor:pointer}.checkbox-label input{width:auto}.auth-footer-link{margin-top:var(--space-3);font-size:.88rem;text-align:center;color:var(--color-text-muted)}.auth-footer-link a{color:var(--color-link)}.auth-status-loading{color:var(--color-text-muted);font-size:.9rem}.auth-button{position:relative}.auth-button-trigger{display:flex;align-items:center;gap:8px;padding:6px 10px;background:transparent;border:1px solid var(--color-border);border-radius:999px;cursor:pointer;color:var(--color-text)}.auth-button-trigger:hover{border-color:var(--color-primary)}.auth-avatar{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--color-primary);color:#fff;font-size:.75rem;font-weight:700}.auth-display-name{font-size:.9rem;font-weight:600}.auth-menu{position:absolute;right:0;top:calc(100% + 6px);min-width:160px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-card);padding:6px;z-index:20}.auth-menu-item{display:block;width:100%;text-align:left;padding:8px 10px;background:transparent;border:none;border-radius:6px;cursor:pointer;font-size:.88rem;color:var(--color-text)}.auth-menu-item:hover{background:var(--color-bg)}