:root{--ktd-ink:#231f1b;--ktd-muted:#766e65;--ktd-paper:#fffdfa;--ktd-paper-2:#f6f0e7;--ktd-line:#e7ddd0;--ktd-accent:#8b5f35}
.ktd-shell{max-width:1120px;margin:38px auto;padding:0 18px;color:var(--ktd-ink)}
.ktd-hero,.ktd-panel,.ktd-free-card,.ktd-login-card,.ktd-active-banner{border:1px solid var(--ktd-line);border-radius:24px;background:var(--ktd-paper);box-shadow:0 14px 45px rgba(40,28,18,.06)}
.ktd-hero{padding:34px;display:flex;justify-content:space-between;gap:34px;align-items:center;background:linear-gradient(135deg,#fbf6ed,#fffdfa)}
.ktd-hero-copy{max-width:720px}.ktd-hero h1{margin:8px 0 15px;font-size:clamp(34px,5vw,58px);line-height:1.04}.ktd-hero p{max-width:720px;font-size:17px;line-height:1.7;color:#4b443d}
.ktd-kicker{font-size:11px;letter-spacing:.17em;text-transform:uppercase;color:var(--ktd-muted)}
.ktd-hero-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.ktd-hero-meta span,.ktd-deck-badge,.ktd-plan-spread,.ktd-quota{font-size:12px;border:1px solid var(--ktd-line);background:#faf5ee;border-radius:999px;padding:7px 10px;color:#5b5148}
.ktd-hero-card{width:180px;display:grid;place-items:center}.ktd-card-back{width:146px;height:252px;border:1px solid #cbbda9;border-radius:15px;background:radial-gradient(circle at center,rgba(255,255,255,.16) 0 2px,transparent 3px),repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 2px,transparent 2px 8px),#40362e;color:#efe6d6;display:flex;flex-direction:column;justify-content:space-between;align-items:center;padding:22px 0;box-shadow:0 20px 42px rgba(37,28,20,.18);transform:rotate(3deg)}.ktd-card-back strong{font-size:28px;letter-spacing:.12em}.ktd-card-back span{font-size:24px}
.ktd-active-banner{margin-top:18px;padding:18px 22px;display:flex;justify-content:space-between;align-items:center;gap:18px;background:#f8f1e8}.ktd-active-banner strong,.ktd-active-banner small{display:block}.ktd-active-banner strong{font-size:18px;margin:4px 0}.ktd-active-banner small{color:var(--ktd-muted)}
.ktd-section-head{margin:46px 0 20px}.ktd-section-head h1,.ktd-section-head h2{margin:8px 0 10px;font-size:clamp(30px,4vw,46px);line-height:1.08}.ktd-section-head p{color:var(--ktd-muted)}
.ktd-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.ktd-card{padding:26px;border:1px solid var(--ktd-line);border-radius:20px;background:#fff}.ktd-plan-top,.ktd-panel-top,.ktd-reading-overline,.ktd-reading-head,.ktd-chat-head,.ktd-form-footer,.ktd-history-top{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.ktd-card .ktd-price{font-size:30px;font-weight:700;margin:14px 0}.ktd-card p{color:var(--ktd-muted);line-height:1.6}.ktd-free-card{margin-top:18px;padding:24px 28px;display:flex;justify-content:space-between;align-items:center;gap:22px}.ktd-free-card h2{margin:8px 0}.ktd-free-card p{margin:0;color:var(--ktd-muted)}
.ktd-btn{display:inline-block;border:0;border-radius:999px;padding:12px 18px;background:#29231f;color:#fff;text-decoration:none;cursor:pointer;transition:.2s ease}.ktd-btn:hover{transform:translateY(-1px);opacity:.94}.ktd-btn:disabled{opacity:.6;cursor:wait;transform:none}.ktd-btn.secondary{background:#eee6dc;color:#29231f}
.ktd-home-links{margin-top:16px;text-align:right}.ktd-home-links a{color:inherit}
.ktd-panel{padding:28px;margin-bottom:20px}.ktd-start-panel h1{margin:10px 0 12px;font-size:clamp(32px,4vw,48px)}.ktd-start-panel p{color:#554d45;line-height:1.7}.ktd-session-summary{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.ktd-session-summary>*{padding:10px 13px;border:1px solid var(--ktd-line);border-radius:12px;background:#faf6ef}.ktd-panel label{font-weight:600;display:block;margin:18px 0 8px}.ktd-panel textarea{box-sizing:border-box;width:100%;min-height:110px;border:1px solid #d9cdbf;border-radius:16px;padding:14px 15px;resize:vertical;background:#fff}.ktd-helper{font-size:12px;color:var(--ktd-muted);line-height:1.5}.ktd-loading{margin-top:8px;font-size:13px;color:var(--ktd-muted)}
.ktd-reading-head{margin-bottom:22px;align-items:center}.ktd-reading-title{flex:1}.ktd-reading-title h1{margin:10px 0 10px;font-size:clamp(30px,4.5vw,52px);line-height:1.04}.ktd-reading-title p{margin:0;color:var(--ktd-muted)}
.ktd-spread{display:grid;gap:18px;align-items:start;margin-bottom:24px}.ktd-spread-1{grid-template-columns:minmax(220px,340px)}.ktd-spread-3{grid-template-columns:repeat(3,minmax(0,1fr))}.ktd-spread-5{grid-template-columns:repeat(5,minmax(0,1fr))}.ktd-spread-7{grid-template-columns:repeat(4,minmax(0,1fr))}.ktd-card-tile{min-width:0}.ktd-card-frame{border-radius:18px;padding:7px;background:linear-gradient(145deg,#d8c6ad,#f5eadc 42%,#a88d6c);box-shadow:0 18px 42px rgba(46,32,21,.15)}.ktd-card-frame img{display:block;width:100%;height:auto;aspect-ratio:474/877;object-fit:cover;border-radius:12px;background:#eee}.ktd-card-meta{padding:11px 4px 0}.ktd-card-meta strong,.ktd-card-meta small{display:block}.ktd-card-meta strong{font-size:15px;margin-top:5px}.ktd-card-meta small{color:var(--ktd-muted);margin-top:4px;line-height:1.35}
.ktd-reading-panel h2,.ktd-chat-panel h2{margin:6px 0 4px}.ktd-prose{font-size:16px;line-height:1.78;color:#3e3934}.ktd-prose p:last-child{margin-bottom:0}.ktd-quota{white-space:nowrap}.ktd-messages{display:flex;flex-direction:column;gap:12px;margin:20px 0}.ktd-msg{max-width:86%;padding:15px 17px;border:1px solid var(--ktd-line);border-radius:16px;background:#f7f1e9}.ktd-msg.user{margin-left:auto;background:#eee5db}.ktd-msg strong{display:block;font-size:12px;margin-bottom:6px}.ktd-msg p:last-child{margin-bottom:0}.ktd-chat-empty{padding:15px;border-radius:14px;background:#faf6ef;color:var(--ktd-muted)}.ktd-form-footer{align-items:center;margin-top:6px}.ktd-form-footer .ktd-btn{flex-shrink:0}
.ktd-history-list{display:flex;flex-direction:column;gap:10px}.ktd-history-row{display:flex;justify-content:space-between;gap:18px;align-items:center;text-decoration:none;color:inherit;border:1px solid var(--ktd-line);border-radius:17px;padding:18px;background:#fff}.ktd-history-row strong,.ktd-history-row small{display:block}.ktd-history-row strong{margin-top:7px}.ktd-history-row small{margin-top:6px;color:var(--ktd-muted)}.ktd-history-arrow{font-size:22px;color:var(--ktd-accent)}
.ktd-login-card{max-width:620px;margin:72px auto;text-align:center;padding:36px}.ktd-card-symbol{font-size:32px;margin-bottom:6px}.ktd-login-card h2{font-size:32px;margin:10px 0}.ktd-login-card p{color:var(--ktd-muted);line-height:1.7}.ktd-notice{border:1px solid #eadfce;border-radius:15px;padding:16px;background:#fbf6ef;color:#4f473f}.ktd-disclaimer{font-size:12px;color:var(--ktd-muted);line-height:1.5;margin:20px 0}
@media(max-width:900px){.ktd-spread-5{grid-template-columns:repeat(3,minmax(0,1fr))}.ktd-spread-7{grid-template-columns:repeat(3,minmax(0,1fr))}.ktd-hero-card{width:130px}.ktd-card-back{width:112px;height:196px}}
@media(max-width:700px){.ktd-shell{margin:20px auto;padding:0 12px}.ktd-hero,.ktd-free-card,.ktd-active-banner,.ktd-reading-head{flex-direction:column;align-items:flex-start}.ktd-hero-card{align-self:center}.ktd-grid{grid-template-columns:1fr}.ktd-spread-3,.ktd-spread-5,.ktd-spread-7{grid-template-columns:repeat(2,minmax(0,1fr))}.ktd-spread-1{grid-template-columns:minmax(0,1fr)}.ktd-card-meta strong{font-size:14px}.ktd-form-footer,.ktd-chat-head{flex-direction:column;align-items:stretch}.ktd-form-footer .ktd-btn{width:100%}.ktd-history-top{flex-direction:column;gap:5px}}
@media(max-width:440px){.ktd-spread-3,.ktd-spread-5,.ktd-spread-7{grid-template-columns:1fr 1fr}.ktd-spread-5 .ktd-card-meta strong,.ktd-spread-7 .ktd-card-meta strong{font-size:13px}}

.ktd-conversation{margin:18px 0;border:1px solid var(--ktd-line);border-radius:14px;background:#faf6ef;overflow:hidden}.ktd-conversation summary{cursor:pointer;padding:12px 15px;font-weight:600;color:#514940}.ktd-conversation[open] summary{border-bottom:1px solid var(--ktd-line)}.ktd-conversation .ktd-messages{padding:0 15px 15px;margin:15px 0 0}.ktd-conversation .ktd-msg{background:#fff}.ktd-conversation .ktd-msg.user{background:#eee5db}


/* v1.3.0 conversation refinement */
.ktd-initial-conversation{margin-top:18px}
.ktd-initial-conversation summary{display:flex;flex-direction:column;gap:4px}
.ktd-initial-conversation summary small{font-weight:400;color:var(--ktd-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.ktd-followup-messages{margin-top:14px}
.ktd-followup-messages .ktd-msg{max-width:86%}
.ktd-conversation .ktd-messages{padding:0 15px 15px}
@media(max-width:700px){.ktd-initial-conversation summary small{white-space:normal;line-height:1.4}}


/* v1.3.1 mobile refinement */
.ktd-reading-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.ktd-btn-finish{background:#6b4f3a;color:#fff}.ktd-btn-finish:hover{background:#5b402f}.ktd-reading-shell{overflow:hidden}
@media(max-width:700px){
  .ktd-shell{max-width:100%;box-sizing:border-box;padding:0 10px;margin:14px auto}
  .ktd-hero{padding:22px 18px;border-radius:18px}
  .ktd-hero h1{font-size:34px;line-height:1.08}
  .ktd-hero p,.ktd-section-head p,.ktd-card p,.ktd-start-panel p{font-size:15px;line-height:1.6}
  .ktd-panel{padding:20px 16px;border-radius:18px}
  .ktd-reading-head{gap:14px}
  .ktd-reading-title h1{font-size:29px;line-height:1.08;overflow-wrap:anywhere}
  .ktd-reading-actions{width:100%;justify-content:flex-start}.ktd-reading-actions .ktd-btn{flex:1 1 auto;text-align:center;min-width:0}
  .ktd-spread{gap:12px}
  .ktd-spread-3,.ktd-spread-5,.ktd-spread-7{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ktd-card-frame{padding:4px;border-radius:12px}.ktd-card-frame img{border-radius:8px}
  .ktd-card-meta{padding-top:8px}.ktd-card-meta strong{font-size:13px;line-height:1.3}.ktd-card-meta .ktd-kicker{font-size:9px;letter-spacing:.1em}.ktd-card-meta small{font-size:11px}
  .ktd-prose{font-size:15px;line-height:1.7;overflow-wrap:anywhere}
  .ktd-chat-head,.ktd-form-footer{gap:10px}
  .ktd-quota{white-space:normal;align-self:flex-start}
  .ktd-msg{max-width:94%;padding:12px 13px;font-size:14px;line-height:1.6;overflow-wrap:anywhere}
  .ktd-initial-conversation summary{padding:12px}.ktd-initial-conversation summary small{font-size:12px}
  .ktd-panel textarea{font-size:16px;min-height:120px}
  .ktd-history-row{padding:14px;align-items:flex-start}.ktd-history-arrow{font-size:18px;padding-top:4px}
  .ktd-free-card,.ktd-active-banner{padding:18px;border-radius:18px}.ktd-free-card .ktd-btn,.ktd-active-banner .ktd-btn{width:100%;text-align:center}
}
@media(max-width:390px){
  .ktd-spread-3,.ktd-spread-5,.ktd-spread-7{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
  .ktd-card-meta strong{font-size:12px}
  .ktd-reading-actions .ktd-btn{font-size:13px;padding:10px 12px}
}

/* v1.4.0 package navigation and terms */
.ktd-home-links{display:flex;justify-content:flex-end;gap:8px;align-items:center;flex-wrap:wrap}
.ktd-page-links{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:22px 0 8px}
.ktd-page-links .ktd-btn{font-size:13px}
.ktd-terms-panel h2{margin:24px 0 8px}.ktd-terms-panel h2:first-child{margin-top:0}.ktd-terms-panel p{line-height:1.8;color:#4b443d}
@media(max-width:700px){.ktd-home-links,.ktd-page-links{justify-content:flex-start}.ktd-page-links{display:grid;grid-template-columns:1fr;width:100%}.ktd-page-links .ktd-btn{width:100%;text-align:center;box-sizing:border-box}.ktd-home-links a{font-size:13px}}