/* 智學雲 Padma Cloud Demo — commercial AI-edtech shell */
:root{
  --navy:#0b1220;--navy2:#111827;--violet:#6d28d9;--violet2:#7c3aed;--violet-soft:#ede9fe;
  --cyan:#06b6d4;--cyan-soft:#cffafe;--bg:#f4f6fb;--surface:#fff;--text:#0f172a;
  --muted:#64748b;--border:#e2e8f0;--ok:#059669;--warn:#b45309;--warn-bg:#fffbeb;
  --radius:14px;--shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06);
  --font:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--violet2);text-decoration:none}a:hover{text-decoration:underline}
.demo-banner{background:linear-gradient(90deg,#fef3c7,#fde68a);color:var(--warn);text-align:center;padding:.55rem 1rem;font-size:.82rem;font-weight:700;border-bottom:1px solid #fbbf24}
.demo-banner span{font-weight:500;opacity:.9;margin-left:.4rem}
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(0,0,0,.25)}
.header-inner{max-width:1120px;margin:0 auto;padding:.7rem 1.1rem;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.7rem;color:#fff;text-decoration:none}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--violet),var(--cyan));display:grid;place-items:center;font-weight:800;font-size:.85rem;letter-spacing:-.02em}
.brand-text strong{display:block;font-size:1rem}.brand-text small{opacity:.7;font-size:.72rem}
.nav-toggle{margin-left:auto;background:transparent;border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:8px;padding:.35rem .55rem;display:none;cursor:pointer}
.nav{display:flex;gap:.15rem;list-style:none;flex-wrap:wrap;margin-left:auto}
.nav a{color:rgba(255,255,255,.82);padding:.4rem .65rem;border-radius:8px;font-size:.86rem;text-decoration:none}
.nav a:hover,.nav a.active{background:rgba(255,255,255,.12);color:#fff;text-decoration:none}
main{flex:1}.container{max-width:1120px;margin:0 auto;padding:1.25rem 1.1rem 2.5rem}
.hero{background:linear-gradient(135deg,#111827 0%,#1e1b4b 55%,#0e7490 120%);color:#fff;border-radius:20px;padding:2rem 1.6rem;box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;border-radius:50%;background:rgba(124,58,237,.35);filter:blur(2px)}
.hero-badge{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:.25rem .65rem;border-radius:999px;font-size:.75rem;margin-bottom:.8rem}
.hero h1{font-size:clamp(1.45rem,3.5vw,2.1rem);line-height:1.3;margin-bottom:.7rem;position:relative;z-index:1}
.hero p{opacity:.9;max-width:46rem;position:relative;z-index:1}
.pills{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1rem;position:relative;z-index:1}
.pill{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);padding:.28rem .65rem;border-radius:999px;font-size:.78rem}
.disclaimer{background:var(--warn-bg);border:1px solid #fcd34d;color:var(--warn);padding:.75rem 1rem;border-radius:12px;margin:1rem 0;font-size:.88rem}
.section{margin:1.6rem 0}.section-title{font-size:1.15rem;margin-bottom:.35rem}.section-sub{color:var(--muted);font-size:.9rem;margin-bottom:1rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1rem}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(15,23,42,.1);text-decoration:none}
.card h3{font-size:1rem;margin:.45rem 0 .3rem;color:var(--text)}.card p{color:var(--muted);font-size:.88rem}
.card-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-weight:700;font-size:1rem}
.card-icon.vio{background:var(--violet-soft);color:var(--violet)}.card-icon.cy{background:var(--cyan-soft);color:#0e7490}
.card-icon.nv{background:#e2e8f0;color:var(--navy)}.card-icon.ok{background:#d1fae5;color:var(--ok)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:1rem;text-align:center}
.stat strong{display:block;font-size:1.45rem;color:var(--violet)}.stat span{font-size:.8rem;color:var(--muted)}
.layout-2{display:grid;grid-template-columns:1fr 280px;gap:1rem}
@media(max-width:900px){.layout-2{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}.nav-toggle{display:inline-block}.nav{display:none;width:100%;flex-direction:column}.nav.open{display:flex}}
.inspire-panel{background:var(--surface);border:1px dashed #c4b5fd;border-radius:var(--radius);padding:1rem;font-size:.84rem}
.inspire-panel h3{font-size:.92rem;margin-bottom:.5rem;color:var(--violet)}
.inspire-panel ul{list-style:none;padding-left:0}
.inspire-panel li{margin:.35rem 0;padding:.4rem .65rem;border-radius:8px;font-weight:600}
.inspire-panel li.sayo{background:#fce7f3;color:#9d174d}
.inspire-panel li.essai{background:#dbeafe;color:#1d4ed8}
.inspire-panel li.thinka{background:#dcfce7;color:#166534}
.inspire-panel li.genedu{background:#ffedd5;color:#c2410c}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem;box-shadow:var(--shadow)}
.panel h2,.panel h3{margin-bottom:.55rem}
.btn{display:inline-flex;align-items:center;gap:.35rem;background:var(--violet);color:#fff;border:0;border-radius:10px;padding:.55rem 1rem;font:inherit;font-size:.9rem;font-weight:600;cursor:pointer}
.btn:hover{background:var(--violet2);text-decoration:none}.btn.ghost{background:transparent;color:var(--violet);border:1px solid #c4b5fd}
.btn.sm{padding:.35rem .7rem;font-size:.8rem}
.chips{display:flex;flex-wrap:wrap;gap:.4rem;margin:.6rem 0}
.chip{border:1px solid var(--border);background:#fff;border-radius:999px;padding:.3rem .7rem;font-size:.8rem;cursor:pointer}
.chip.active{background:var(--violet);border-color:var(--violet);color:#fff}
.chat{display:flex;flex-direction:column;gap:.65rem;max-height:380px;overflow:auto;padding:.25rem}
.bubble{max-width:92%;padding:.7rem .9rem;border-radius:14px;font-size:.9rem}
.bubble.user{align-self:flex-end;background:var(--violet);color:#fff;border-bottom-right-radius:4px}
.bubble.ai{align-self:flex-start;background:#f1f5f9;border-bottom-left-radius:4px}
.bubble .meta{font-size:.72rem;opacity:.75;margin-bottom:.25rem}
.composer{display:flex;gap:.5rem;margin-top:.75rem}
.composer input,.composer textarea,select,input[type=text]{flex:1;border:1px solid var(--border);border-radius:10px;padding:.55rem .75rem;font:inherit}
.table{width:100%;border-collapse:collapse;font-size:.88rem}
.table th,.table td{border-bottom:1px solid var(--border);padding:.55rem .4rem;text-align:left;vertical-align:top}
.table th{color:var(--muted);font-weight:600;font-size:.78rem}
.tag{display:inline-block;padding:.15rem .45rem;border-radius:6px;font-size:.72rem;font-weight:600}
.tag.sayo{background:#fce7f3;color:#9d174d}.tag.essai{background:#dbeafe;color:#1d4ed8}
.tag.thinka{background:#dcfce7;color:#166534}.tag.genedu{background:#ffedd5;color:#c2410c}
.tag.demo{background:var(--violet-soft);color:var(--violet)}
.progress{height:8px;background:#e2e8f0;border-radius:999px;overflow:hidden;margin:.4rem 0}
.progress>i{display:block;height:100%;background:linear-gradient(90deg,var(--violet),var(--cyan))}
.codebox{background:#0b1220;color:#e2e8f0;border-radius:12px;padding:1rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82rem;overflow:auto;white-space:pre-wrap}
.step{display:flex;gap:.75rem;margin:.7rem 0}.step-num{width:28px;height:28px;border-radius:50%;background:var(--violet-soft);color:var(--violet);display:grid;place-items:center;font-weight:700;flex-shrink:0}
.footer{background:var(--navy2);color:rgba(255,255,255,.75);padding:1.25rem 1.1rem;font-size:.82rem;margin-top:auto}
.footer-inner{max-width:1120px;margin:0 auto;display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between}
.footer a{color:#c4b5fd}
.site-footer-copy{text-align:right;line-height:1.5}
.spark{display:flex;align-items:flex-end;gap:3px;height:42px}.spark span{width:8px;background:linear-gradient(180deg,var(--cyan),var(--violet));border-radius:3px 3px 0 0;opacity:.85}
.toggle{display:flex;align-items:center;gap:.5rem;font-size:.88rem}
.toggle input{accent-color:var(--violet)}
.ocr-drop{border:2px dashed #c4b5fd;border-radius:12px;padding:1.25rem;text-align:center;background:#faf5ff;color:var(--muted);cursor:pointer}
.ocr-drop.active{border-color:var(--violet);background:var(--violet-soft);color:var(--violet)}
.mark-row{display:flex;justify-content:space-between;padding:.4rem 0;border-bottom:1px dashed var(--border);font-size:.88rem}
.site-footer-note{opacity:.7}