/* khianfun 1.1.0 — member system: login / register / account pages, notices, purchase dialog, watermark.
   Uses the theme tokens (--color-*) so it follows html[data-site-theme] dark/light automatically. */

/* ── header account link ── */
.kf-acct-btn{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 10px;margin-left:2px;border-radius:9999px;color:var(--color-ink-2);font-size:13.5px;font-weight:600;white-space:nowrap;transition:color .2s,background .2s}
.kf-acct-btn:hover{color:var(--color-ink);background:var(--color-mist)}
.kf-acct-btn[data-kf-account=out]{border:1px solid var(--color-line);padding:0 14px}
.kf-acct-l{display:none}
.kf-acct-l-show{display:inline}
@media (min-width:1024px){.kf-acct-l{display:inline}}
@media (max-width:767px){.kf-acct-btn[data-kf-account=out]{display:none}}

/* ── page shell ── */
.kf-auth{min-height:calc(100vh - 64px);padding:clamp(28px,6vw,72px) 16px 72px;display:flex;justify-content:center;align-items:flex-start;color:var(--color-ink)}
.kf-card{width:100%;max-width:440px;background:var(--color-card,var(--color-paper));border:1px solid var(--color-line);border-radius:22px;padding:clamp(22px,4vw,34px);box-shadow:0 30px 80px -40px rgb(0 0 0/.35)}
.kf-card-wide{max-width:780px}
.kf-h{font-size:clamp(22px,3vw,27px);font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--color-ink)}
.kf-h2{font-size:17px;font-weight:700;color:var(--color-ink);margin-top:26px}
.kf-h3{font-size:14.5px;font-weight:700;color:var(--color-ink);margin-top:20px}
.kf-sub{margin-top:6px;font-size:14px;line-height:1.7;color:var(--color-ink-2)}
.kf-muted{color:var(--color-ink-3);font-size:13px;line-height:1.7}
.kf-note{margin-top:14px;font-size:12.5px;line-height:1.7;color:var(--color-ink-3)}
.kf-foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--color-line);font-size:14px;color:var(--color-ink-2);text-align:center}
.kf-link{color:var(--color-ink);font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-color:color-mix(in srgb,var(--color-ink) 35%,transparent)}
.kf-foot a{color:var(--color-ink);font-weight:700;text-decoration:underline;text-underline-offset:3px}
.kf-link:hover{text-decoration-color:var(--color-flame)}

/* ── forms ── */
.kf-form{margin-top:22px;display:grid;gap:16px}
.kf-field{display:grid;gap:6px}
.kf-field>label,.kf-field>span:first-child,.kf-field>.kf-label{font-size:13px;font-weight:600;color:var(--color-ink-2)}
.kf-input{width:100%;height:46px;padding:0 14px;border-radius:12px;border:1px solid var(--color-line);background:transparent;color:var(--color-ink);font:inherit;font-size:15px;transition:border-color .15s,box-shadow .15s}
.kf-input::placeholder{color:var(--color-ink-3)}
.kf-input:focus{outline:none;border-color:var(--color-flame);box-shadow:0 0 0 3px color-mix(in srgb,var(--color-flame) 22%,transparent)}
.kf-field small,.kf-hint{font-size:12px;color:var(--color-ink-3)}
.kf-check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;line-height:1.65;color:var(--color-ink-2);cursor:pointer}
.kf-check input{flex:none;width:18px;height:18px;margin-top:2px;accent-color:var(--color-flame)}
.kf-check a{color:var(--color-ink);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.kf-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13.5px}
.kf-hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}

/* ── buttons ── */
.kf-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:12px;border:0;cursor:pointer;font:inherit;font-size:15px;font-weight:700;line-height:1;white-space:nowrap;color:#fff;background:linear-gradient(#ff5f22,#d63c0c);box-shadow:0 10px 28px -14px #ff5a1fb3,inset 0 1px #ffffff2e;transition:transform .15s,filter .15s}
.kf-btn:hover{filter:brightness(1.06)}
.kf-btn:active{transform:scale(.98)}
.kf-btn[disabled]{opacity:.6;cursor:progress}
.kf-btn-block{width:100%}
.kf-btn-sm{height:36px;padding:0 14px;font-size:13.5px;border-radius:10px}
.kf-btn-ghost{background:transparent;color:var(--color-ink);border:1px solid var(--color-line);box-shadow:none}
.kf-btn-ghost:hover{background:var(--color-mist);filter:none}
.kf-danger{background:transparent;color:#d9483b;border:1px solid color-mix(in srgb,#d9483b 45%,transparent);box-shadow:none}
.kf-danger:hover{background:color-mix(in srgb,#d9483b 10%,transparent);filter:none}

/* ── notices / panels ── */
.kf-ok,.kf-alert{margin-top:16px;padding:11px 14px;border-radius:12px;font-size:13.5px;line-height:1.6}
.kf-ok{background:color-mix(in srgb,var(--color-free,#2f9e6e) 14%,transparent);color:var(--color-ink);border:1px solid color-mix(in srgb,var(--color-free,#2f9e6e) 40%,transparent)}
.kf-alert{background:color-mix(in srgb,#e5484d 12%,transparent);color:var(--color-ink);border:1px solid color-mix(in srgb,#e5484d 42%,transparent)}
.kf-alert p+p{margin-top:4px}
.kf-panel{margin:18px 0 22px;padding:20px;border-radius:16px;border:1px solid var(--color-line);background:var(--color-mist);text-align:left}
.kf-panel-warn{border-color:color-mix(in srgb,#e8a33d 50%,transparent);background:color-mix(in srgb,#e8a33d 10%,var(--color-card,var(--color-paper)))}
.kf-panel-ico{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;font-size:19px;background:color-mix(in srgb,var(--color-ink) 8%,transparent)}
.kf-tone-red .kf-panel-ico,.kf-panel.kf-tone-red .kf-panel-ico{background:color-mix(in srgb,#e5484d 18%,transparent);color:#e5484d}
.kf-tone-amber .kf-panel-ico{background:color-mix(in srgb,#e8a33d 22%,transparent);color:#c7801a}
.kf-tone-blue .kf-panel-ico{background:color-mix(in srgb,#4c8dff 18%,transparent);color:#4c8dff}
.kf-panel.kf-tone-red{border-color:color-mix(in srgb,#e5484d 45%,transparent);background:color-mix(in srgb,#e5484d 8%,var(--color-card,var(--color-paper)))}
.kf-panel.kf-tone-blue{border-color:color-mix(in srgb,#4c8dff 40%,transparent);background:color-mix(in srgb,#4c8dff 7%,var(--color-card,var(--color-paper)))}
.kf-panel-h{margin-top:12px;font-size:17px;font-weight:700;color:var(--color-ink)}
.kf-panel p{margin-top:6px;font-size:14px;line-height:1.7;color:var(--color-ink-2)}
.kf-panel-actions{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}

/* ── account page ── */
.kf-acct-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap}
.kf-tabs{margin-top:22px;display:flex;gap:4px;padding:4px;border-radius:14px;background:var(--color-mist);overflow-x:auto}
.kf-tabs a{flex:1 0 auto;text-align:center;padding:9px 14px;border-radius:10px;font-size:14px;font-weight:600;color:var(--color-ink-2);white-space:nowrap}
.kf-tabs a:hover{color:var(--color-ink)}
.kf-tabs a[aria-current=page]{background:var(--color-card,var(--color-paper));color:var(--color-ink);box-shadow:0 1px 3px rgb(0 0 0/.12)}
.kf-empty{margin-top:22px;padding:34px 18px;border:1px dashed var(--color-line);border-radius:16px;text-align:center;color:var(--color-ink-2);font-size:14.5px}
.kf-empty .kf-btn{margin-top:14px}
.kf-books{margin-top:20px;display:grid;gap:14px}
.kf-book{display:grid;grid-template-columns:72px minmax(0,1fr);gap:16px;align-items:center;padding:14px;border:1px solid var(--color-line);border-radius:16px}
.kf-book-cover{width:72px;aspect-ratio:3/4;object-fit:cover;object-position:50% 0;border-radius:8px;background:var(--color-mist)}
.kf-book-meta{min-width:0}
.kf-book-pen{font-size:12px;color:var(--color-ink-3);font-weight:600}
.kf-book-t{margin-top:2px;font-size:16.5px;font-weight:700;color:var(--color-ink);line-height:1.35}
.kf-book-meta p{font-size:13px;color:var(--color-ink-2);line-height:1.6}
.kf-book .kf-btn{margin-top:10px}
.kf-counter{display:inline-flex;align-items:center;gap:6px;margin-top:12px;padding:6px 12px;border-radius:9999px;background:var(--color-mist);font-size:13px;font-weight:600;color:var(--color-ink)}
.kf-devices{margin-top:12px;display:grid;gap:8px;padding:0;list-style:none}
.kf-devices li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--color-line);border-radius:12px;font-size:13px;color:var(--color-ink-2)}
.kf-dev-name{font-weight:700;color:var(--color-ink);font-size:14px}
.kf-badge{font-style:normal;display:inline-block;margin-left:6px;padding:2px 8px;border-radius:9999px;font-size:11px;font-weight:700;background:color-mix(in srgb,var(--color-free,#2f9e6e) 18%,transparent);color:var(--color-free,#2f9e6e)}
.kf-sep{margin:26px 0 0;border:0;border-top:1px solid var(--color-line)}
@media (max-width:520px){.kf-book{grid-template-columns:60px minmax(0,1fr)}.kf-book-cover{width:60px}.kf-devices li{flex-direction:column;align-items:flex-start}}

/* ── legal pages (terms / privacy) ── */
.kf-page-content h2{margin-top:1.8em;font-size:18px;font-weight:700;color:var(--color-ink)}
.kf-page-content h3{margin-top:1.4em;font-size:16px;font-weight:700;color:var(--color-ink)}
.kf-page-content ul,.kf-page-content ol{margin-top:.6em;padding-left:1.4em;list-style:disc}
.kf-page-content li{margin-top:.35em}
.kf-page-content strong{color:var(--color-ink)}
.kf-page-content table{width:100%;margin-top:1em;border-collapse:collapse;font-size:14px}
.kf-page-content th,.kf-page-content td{padding:8px 10px;border:1px solid var(--color-line);text-align:left;vertical-align:top}
.kf-page-content th{background:var(--color-mist);color:var(--color-ink)}
.kf-page-content .kf-draft-note,.kf-page-content blockquote{margin-top:1em;padding:12px 16px;border-left:3px solid #e8a33d;border-radius:0 12px 12px 0;background:color-mix(in srgb,#e8a33d 10%,transparent);font-size:13.5px}
.kf-page-content .kf-table-wrap{overflow-x:auto}

/* ── purchase dialog (book / home / reader) ── */
.kf-co-head{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:36px}
.kf-co-actions{margin-top:18px;display:grid;gap:8px}
.kf-co-btn{width:100%;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:700;text-align:center;cursor:pointer}
.kf-co-acct{margin-top:14px;padding:10px 12px;border-radius:12px;font-size:13px;line-height:1.5;background:color-mix(in srgb,currentColor 6%,transparent)}
.kf-co-acct strong{font-weight:700}
.kf-co-small{margin-top:10px;font-size:12.5px;line-height:1.6;opacity:.7}
.kf-co-fine{margin-top:12px;font-size:11.5px;opacity:.55;text-align:center}
.kf-co-msg{margin-top:12px;padding:10px 12px;border-radius:12px;font-size:13px;line-height:1.55;background:color-mix(in srgb,#e5484d 13%,transparent);border:1px solid color-mix(in srgb,#e5484d 40%,transparent)}
.kf-co-done-ico{display:grid;place-items:center;width:46px;height:46px;margin-bottom:12px;border-radius:9999px;font-size:22px;font-weight:700;color:#fff;background:linear-gradient(#3fbf86,#23946a)}
.kf-co [hidden]{display:none!important}
.kf-co-reader .kf-co-btn.r-gate-buy{min-width:0}
.kf-co-btn-ghost{background:transparent;color:var(--r-fg);border:1px solid var(--r-line);font-size:15px}
.kf-co-btn-ghost:hover{background:var(--r-hover)}

/* ── watermark (purchased chapters) ──
   Painted in the reader's text colour through a mask → adapts to every reader theme; sits under the bars/FAB (z 40)
   and above the text, never catches clicks or selection. Visible in scroll and page-flip modes (fixed to viewport). */
.kf-wm{position:fixed;inset:0;z-index:35;pointer-events:none;user-select:none;background:var(--r-fg,#888);opacity:.075;
	-webkit-mask-image:var(--kf-wm);mask-image:var(--kf-wm);-webkit-mask-repeat:repeat;mask-repeat:repeat;-webkit-mask-size:360px 220px;mask-size:360px 220px}
html[data-theme=dark] .kf-wm,html[data-theme=dim] .kf-wm{opacity:.09}
@media print{.kf-wm{opacity:.25}}

.kf-co-coupon{display:block;margin:12px 0 4px;font-size:13px}
.kf-co-coupon-row{display:flex;gap:8px;margin-top:4px}
.kf-co-coupon-row input{flex:1;border:1px solid var(--color-line,#ddd);border-radius:10px;padding:8px 10px}
.r-preview-fade{height:80px;margin-top:-80px;background:linear-gradient(transparent,var(--r-bg,#fff));pointer-events:none}
.r-preview-note{text-align:center;font-size:13px;opacity:.7;margin:8px 0 16px}