/* =========================================================================
   kybase landing page -- dark workbench + paper evidence
   Sections: topbar / hero / session / sections / tools / answer / pages
   / formats / tuning / free stack / deploy / cta / footer / motion / responsive
   ========================================================================= */
@font-face {
  font-family: "SansSC";
  src: url("./assets/fonts/sans-sc-var.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Mono";
  src: url("./assets/fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Mono";
  src: url("./assets/fonts/plex-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  --bg: #0a0b0c;
  --bg-2: #0d0f11;
  --panel: #101317;
  --panel-2: #151a20;
  --ink: #e9e6df;
  --dim: #a3a8ad;
  --faint: #7a8086;
  --line: #252b31;
  --line-soft: #1a1f24;
  --amber: #eaa64a;
  --amber-hi: #f4b45c;
  --amber-deep: #a8641c;
  --green: #8fca96;
  --blue: #9db4dc;
  --paper: #f4f0e6;
  --paper-sheet: #faf7ee;
  --paper-ink: #17150f;
  --paper-dim: #5f5b50;
  --paper-rule: #d6cebc;
  --stamp: #b23a20;
  --sans: "SansSC", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --sans-sc: "SansSC", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --wrap: 1240px;
  --pad: clamp(20px, 4.2vw, 56px);
  --ease: cubic-bezier(0.22, 0.7, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
html.motion-off { scroll-behavior: auto; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.017) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.017) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(760px 420px at 76% -6%, rgba(234, 166, 74, 0.085), transparent 70%),
    radial-gradient(980px 560px at 12% 102%, rgba(157, 180, 220, 0.04), transparent 72%);
}

h1, h2, h3, p, ol, ul, dl, dd, figure { margin: 0; }
ol, ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
code, pre { font-family: var(--mono); }
svg { display: block; }
::selection { background: rgba(234, 166, 74, 0.34); }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--amber);
  color: #17120a;
  font-size: 13px;
  opacity: 0;
  transform: translateY(-180%);
  pointer-events: none;
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
}
.skip-link:focus-visible { opacity: 1; transform: none; pointer-events: auto; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--pad);
}

/* ============================== topbar ============================== */

.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 11, 12, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}
.topbar.is-scrolled { background: rgba(10, 11, 12, 0.94); border-color: #2b3239; }

.topbar-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--pad);
  height: 62px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand-mark { color: var(--ink); }
.brand-dot { fill: var(--amber); }
.brand-word { font-family: var(--mono); font-size: 15px; font-weight: 500; letter-spacing: 0.04em; }
.brand-chip {
  margin-left: 4px;
  padding: 3px 8px;
  border: 1px solid rgba(234, 166, 74, 0.34);
  color: var(--amber);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { font-size: 13px; color: var(--dim); transition: color 0.18s var(--ease); }
.nav a:hover { color: var(--ink); }

.topbar-actions { display: flex; align-items: center; gap: 18px; }
.top-ver { font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; color: var(--faint); }
.ghlink { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: 0.02em; }
.ghlink:hover { color: var(--amber); }
.top-cta {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 14px;
  background: var(--amber);
  color: #17120a;
  font-size: 12.5px;
  font-weight: 700;
  white-space: nowrap;
  transition: background 0.18s var(--ease), transform 0.12s var(--ease);
}
.top-cta:hover { background: var(--amber-hi); }
.top-cta:active { transform: translateY(1px); }

.menu-toggle {
  display: none;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--dim);
  white-space: nowrap;
}

.mobile-nav {
  display: none;
  padding: 8px var(--pad) 16px;
  border-top: 1px solid var(--line);
}
.mobile-nav a {
  display: block;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--dim);
}
.mobile-nav a:last-child { border-bottom: 0; }

/* ============================== hero ============================== */

.hero {
  position: relative;
  z-index: 1;
  padding: clamp(32px, 4.2vw, 58px) 0 0;
}
.hero-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--pad);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(300px, 0.62fr);
  gap: clamp(28px, 4vw, 72px);
  align-items: end;
}

.display {
  font-family: var(--sans-sc);
  font-weight: 700;
  font-size: clamp(48px, 6.2vw, 92px);
  line-height: 1.06;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.display .line { display: block; }
.display .mark { color: var(--amber); }

.hero-side { padding-bottom: 10px; }
.lede {
  max-width: 34em;
  font-size: 15px;
  line-height: 1.95;
  color: var(--dim);
  text-wrap: pretty;
}
.lede b { color: var(--ink); font-weight: 700; }
.lede code {
  font-size: 0.9em;
  color: var(--ink);
  border-bottom: 1px solid rgba(234, 166, 74, 0.4);
}

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 26px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 22px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease),
    transform 0.12s var(--ease);
}
.btn:active { transform: translateY(1px) scale(0.995); }
.btn-primary { background: var(--amber); color: #17120a; }
.btn-primary:hover { background: var(--amber-hi); }
.btn-ghost { border: 1px solid #3a4149; color: var(--dim); }
.btn-ghost:hover { border-color: var(--dim); color: var(--ink); }

.hero-facts {
  display: flex;
  gap: clamp(16px, 2.2vw, 30px);
  margin-top: 26px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.hero-facts li { display: flex; align-items: baseline; gap: 6px; white-space: nowrap; }
.hero-facts span {
  font-family: var(--mono);
  font-size: 19px;
  font-weight: 500;
  line-height: 1.1;
  color: var(--ink);
}
.hero-facts small { font-size: 10.5px; color: var(--faint); line-height: 1.5; }

/* ------ session window ------ */

.session {
  margin-top: clamp(26px, 3.4vw, 44px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(21, 26, 32, 0.9), rgba(16, 19, 23, 0.97));
  box-shadow: 0 44px 90px -48px rgba(0, 0, 0, 0.92), 0 1px 0 rgba(255, 255, 255, 0.04) inset;
  position: relative;
}
.session::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(104deg, transparent 32%, rgba(234, 166, 74, 0.028) 47%, transparent 63%);
}
.session-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--faint);
  letter-spacing: 0.02em;
}
.s-dot { width: 7px; height: 7px; border-radius: 50%; background: #3a4047; flex: none; }
.s-title { color: var(--dim); }
.s-sep { width: 1px; height: 12px; background: var(--line); }
.s-url { color: var(--faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s-state { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; color: var(--green); letter-spacing: 0.1em; white-space: nowrap; }
.s-state i { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px rgba(143, 202, 150, 0.55); }

.session-body { display: grid; grid-template-columns: minmax(0, 1.72fr) minmax(248px, 0.56fr); }
.thread { padding: 18px 22px 20px; min-width: 0; }

.msg { display: grid; grid-template-columns: 60px minmax(0, 1fr); gap: 12px; padding: 5px 0; }
.msg .who {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--faint);
  text-align: right;
  padding-top: 5px;
  white-space: nowrap;
}
.msg-user .bubble {
  justify-self: start;
  max-width: 94%;
  padding: 10px 14px;
  border: 1px solid #2b333c;
  background: #1a2027;
  color: #d9d6ce;
  font-size: 12.5px;
  line-height: 1.8;
}
.msg-agent .bubble {
  padding-top: 4px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--dim);
}
.msg-agent .bubble b { color: var(--ink); font-weight: 700; }
.cite { display: inline-block; margin-top: 4px; font-family: var(--mono); font-size: 10px; color: var(--faint); }
.caret {
  display: inline-block;
  width: 6px;
  height: 13px;
  margin-left: 4px;
  vertical-align: -2px;
  background: var(--amber);
  animation: blink 1.15s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.call {
  display: grid;
  grid-template-columns: 152px minmax(0, 1fr);
  gap: 12px;
  padding: 6px 10px;
  border-left: 2px solid transparent;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.6;
}
.msg-tool:nth-of-type(odd) .call { border-left-color: #2b323a; }
.call .fn { color: var(--amber); overflow: hidden; text-overflow: ellipsis; }
.call .res { color: var(--faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.call .res b { color: var(--green); font-weight: 400; }
.call .res em { color: var(--blue); font-style: normal; }

.hit {
  margin: 10px 0 6px 72px;
  padding: 12px 14px;
  border: 1px solid #2b333c;
  background: #141a20;
}
.hit-top { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; }
.hit-doc { font-family: var(--mono); font-size: 11px; color: var(--ink); }
.hit-page { font-family: var(--mono); font-size: 10px; color: var(--amber); }
.hit-slice {
  margin-top: 8px;
  padding-left: 10px;
  border-left: 1px solid #39424c;
  font-size: 12.5px;
  line-height: 1.9;
  color: #c4c1b8;
}
.hit-meta { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 8px; font-family: var(--mono); font-size: 10px; color: #949a9f; }
.hit-meta b { color: var(--green); font-weight: 400; }

.toolrail {
  border-left: 1px solid var(--line);
  background: rgba(10, 11, 12, 0.36);
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.rail-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--faint);
}
.rail-head b { font-family: var(--sans-sc); font-size: 20px; font-weight: 700; color: var(--amber); letter-spacing: 0; }
.rail-list { display: grid; gap: 1px; }
.rail-list li {
  position: relative;
  padding: 3.5px 0 3.5px 12px;
  font-family: var(--mono);
  font-size: 10px;
  color: #838a91;
}
.rail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  margin-top: -2px;
  border-radius: 50%;
  background: #3a4047;
}
.rail-list li.is-lit { color: var(--ink); }
.rail-list li.is-lit::before { background: var(--amber); box-shadow: 0 0 6px rgba(234, 166, 74, 0.55); }
.rail-fp {
  margin-top: 2px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 9px;
  line-height: 1.8;
  color: var(--faint);
}
.rail-fp code { display: block; color: var(--dim); font-size: 10px; letter-spacing: 0.04em; }
.rail-note { margin-top: auto; font-size: 10.5px; line-height: 1.7; color: var(--faint); }
.rail-note code { font-size: 0.92em; color: var(--amber); }

.hero-foot {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  color: var(--faint);
}
.hero-foot-r { text-align: right; }

.scroll-cue {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 30px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--faint);
}
.scroll-cue:hover { color: var(--amber); }
.scroll-cue i { flex: 1; height: 1px; background: var(--line); position: relative; }
.scroll-cue i::after {
  content: "";
  position: absolute;
  right: 0;
  top: -2px;
  width: 6px;
  height: 6px;
  border-right: 1px solid var(--faint);
  border-bottom: 1px solid var(--faint);
  transform: rotate(45deg);
}

/* ============================== shared section ============================== */

.section {
  position: relative;
  z-index: 1;
  padding: clamp(78px, 9vw, 128px) 0;
  border-top: 1px solid var(--line);
}
section[id] { scroll-margin-top: 78px; }
.section-dark { background: var(--bg-2); }
.section-paper {
  background: var(--paper);
  color: var(--paper-ink);
  --ink: var(--paper-ink);
  --dim: #575348;
  --faint: #6b6557;
  --line: #d6cebc;
  --line-soft: #e3dccd;
  --panel: var(--paper-sheet);
  --panel-2: #ece6d7;
}

.section-head {
  display: grid;
  grid-template-columns: 0.7fr 4.55fr 3.3fr;
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
  margin-bottom: clamp(42px, 5vw, 64px);
}
.sec-no {
  padding-top: 7px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--faint);
}
.section-paper .sec-no { color: var(--stamp); }
.section-head h2 {
  font-family: var(--sans-sc);
  font-weight: 700;
  font-size: clamp(38px, 4.2vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.sec-lede { font-size: 14.5px; line-height: 1.95; color: var(--dim); max-width: 36em; }
.sec-lede code,
.section-note code,
.tool-foot code,
.tune-foot code,
.deploy-foot code {
  font-size: 0.9em;
  color: var(--ink);
  padding: 0 0.16em;
  background: color-mix(in srgb, var(--ink) 7%, transparent);
}
.section-note {
  margin-top: 38px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--faint);
  max-width: 84ch;
}

/* ============================== tools ============================== */

.tool-explorer { border: 1px solid var(--line); background: var(--panel); }

.tool-groups {
  position: relative;
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}
.tool-groups::-webkit-scrollbar { display: none; }
.tool-tab {
  position: relative;
  z-index: 1;
  flex: none;
  padding: 15px 22px;
  font-size: 13px;
  color: var(--faint);
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}
.tool-tab span {
  margin-left: 5px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--faint);
}
.tool-tab:hover { color: var(--dim); }
.tool-tab.is-active { color: var(--ink); }
.tool-tab.is-active span { color: var(--amber); }
.tool-indicator {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 1px;
  width: 0;
  background: var(--amber);
  transition: transform 0.32s var(--ease-out), width 0.32s var(--ease-out);
}

.tool-body { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr); }
.tool-list { border-right: 1px solid var(--line); }
.tool-list-static { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.tool-list-static li { display: flex; flex-direction: column; gap: 2px; padding: 12px 18px; border-right: 1px solid var(--line-soft); }
.tool-list-static li:nth-child(2n) { border-right: 0; }
.tool-list-static .tname { font-family: var(--mono); font-size: 11px; color: var(--dim); }
.tool-list-static .tlabel { font-size: 12px; color: var(--faint); }
.tool-list li { border-bottom: 1px solid var(--line-soft); }
.tool-list li:last-child { border-bottom: 0; }
.tool-list button {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 12px;
  padding: 15px 18px;
  text-align: left;
  transition: background 0.18s var(--ease);
}
.tool-list button:hover { background: rgba(255, 255, 255, 0.025); }
.tool-list li.is-active button { background: rgba(234, 166, 74, 0.06); }
.tool-list .tname { font-family: var(--mono); font-size: 11.5px; color: var(--dim); overflow: hidden; text-overflow: ellipsis; }
.tool-list li.is-active .tname { color: var(--amber); }
.tool-list .tlabel { grid-column: 1 / -1; font-size: 12.5px; color: var(--faint); }
.tool-list li.is-active .tlabel { color: var(--ink); }
.tool-list .tarrow { font-family: var(--mono); font-size: 10px; color: var(--faint); }

.tool-detail { padding: clamp(20px, 2.6vw, 32px); min-height: 328px; }
.td-top { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--line-soft); }
.td-name { font-family: var(--mono); font-size: 17px; font-weight: 500; color: var(--amber); letter-spacing: 0.01em; }
.td-kind { font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em; color: var(--faint); }
.td-summary { margin: 16px 0 20px; font-size: 15px; line-height: 1.85; color: var(--ink); max-width: 40em; }
.td-code {
  margin: 18px 0 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: #0d1014;
  font-size: 11px;
  line-height: 1.75;
  color: var(--green);
  overflow-x: auto;
  white-space: pre;
}
.td-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.td-col .td-col-label { display: block; margin-bottom: 8px; font-family: var(--mono); font-size: 9px; font-weight: 400; letter-spacing: 0.14em; color: var(--faint); }
.td-col p { font-family: var(--mono); font-size: 11px; line-height: 1.8; color: var(--dim); word-break: break-word; }
.td-col p em { font-style: normal; color: var(--amber); }
.td-note { margin-top: 16px; padding-left: 12px; border-left: 1px solid var(--line); font-size: 11.5px; line-height: 1.8; color: var(--faint); }

.tool-foot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 48px;
  margin-top: 20px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--faint);
}
.tool-foot code { color: var(--dim); }

/* ============================== answer ============================== */

.answer-layout { display: grid; grid-template-columns: minmax(0, 1.42fr) minmax(300px, 0.72fr); gap: clamp(28px, 4vw, 56px); align-items: start; }

.paper-sheet {
  background: var(--paper-sheet);
  border: 1px solid var(--paper-rule);
  color: var(--paper-ink);
  box-shadow: 0 2px 0 rgba(255, 255, 255, 0.6) inset, 0 26px 50px -38px rgba(52, 40, 18, 0.4);
}

.payload { padding: clamp(20px, 2.4vw, 30px); }
.payload-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--paper-rule);
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--paper-dim);
  letter-spacing: 0.06em;
}
.payload-head .method { color: var(--stamp); font-weight: 500; }
.payload-head .status { margin-left: auto; color: #446b46; }
.payload-query {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 17px 0 14px;
  font-family: var(--sans-sc);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.payload-query span { font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em; color: var(--stamp); }

.pblock {
  padding: 12px 12px 12px 14px;
  border-left: 2px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.pblock + .pblock { margin-top: 2px; }
.pblock.is-active { border-left-color: var(--amber-deep); background: rgba(168, 100, 28, 0.055); }
.pkey {
  display: block;
  margin-bottom: 4px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--paper-dim);
}
.pblock p { font-size: 13px; line-height: 1.85; color: #3d3a31; }
.pblock-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.fit {
  padding: 2px 6px;
  border: 1.5px solid var(--stamp);
  color: var(--stamp);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
}
.dist-chart { display: flex; align-items: flex-end; gap: 3px; height: 44px; margin: 8px 0 8px; }
.dist-chart span { flex: 1; height: var(--h); background: #d9d0ba; }
.dist-chart span.hot { background: var(--stamp); opacity: 0.78; }
.dist-meta { display: flex; flex-wrap: wrap; gap: 4px 16px; font-family: var(--mono); font-size: 9px; color: var(--paper-dim); }
.dist-meta b { color: var(--paper-ink); font-weight: 400; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.chips span {
  padding: 3px 7px;
  border: 1px solid var(--paper-rule);
  background: #fffdf7;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--paper-dim);
}
.chips b { color: var(--paper-ink); font-weight: 500; }

.payload-hits li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) 34px 46px 58px;
  gap: 8px;
  align-items: baseline;
  padding: 7px 0;
  border-bottom: 1px solid #e6dfd0;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--paper-dim);
}
.payload-hits li:last-child { border-bottom: 0; }
.payload-hits .d { font-family: var(--sans); font-size: 11.5px; color: #3d3a31; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.payload-hits .r,
.payload-hits .pg,
.payload-hits .sc,
.payload-hits .bs { font-size: 9px; text-align: right; }
.payload-hits .on .d { color: var(--paper-ink); font-weight: 700; }
.payload-hits .on .pg { color: var(--stamp); border-bottom: 1px solid var(--stamp); }
.payload-hits .bs { color: #446b46; }

.pblock-foot { display: flex; align-items: baseline; gap: 12px; border-top: 1px solid var(--paper-rule); margin-top: 6px; }
.pblock-foot .next { font-family: var(--mono); font-size: 14px; color: var(--paper-ink); }
.next-note { font-size: 10.5px; color: var(--paper-dim); }
.next-note code { font-size: 0.92em; }

.sheet-note {
  margin-top: 16px;
  padding-top: 11px;
  border-top: 1px solid var(--paper-rule);
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: #6f6959;
}

.answer-notes { position: sticky; top: 86px; }
.note-tabs { display: grid; grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.note-tab {
  position: relative;
  padding: 10px 0 10px 14px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  font-family: var(--mono);
  font-size: 12px;
  color: #6a6457;
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
}
.note-tab:last-child { border-bottom: 0; }
.note-tab::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background 0.18s var(--ease);
}
.note-tab:hover { color: var(--dim); }
.note-tab.is-active { color: var(--ink); background: rgba(168, 100, 28, 0.05); }
.note-tab.is-active::after { background: var(--amber-deep); }
.note-body { min-height: 170px; padding: 20px 0 4px; }
.note-body h3 { font-family: var(--sans-sc); font-size: 18px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 8px; }
.note-body p { font-size: 13px; line-height: 1.95; color: var(--dim); max-width: 34em; }
.note-body code { font-size: 0.92em; color: var(--ink); }
.note-aside { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); display: grid; gap: 8px; }
.note-aside li { font-size: 12.5px; line-height: 1.8; color: var(--faint); padding-left: 12px; position: relative; }
.note-aside li::before { content: "·"; position: absolute; left: 0; color: var(--amber); }
.note-aside b { color: inherit; font-weight: 400; }
.note-aside code { font-size: 0.92em; color: var(--dim); }

/* ============================== page-mapping narrative ============================== */

.pages { overflow: clip; }
.pages .section-head { margin-bottom: 8px; }

.narrative { position: relative; margin-top: 12px; height: 360vh; }
.narrative-pin {
  position: sticky;
  top: 62px;
  height: calc(100vh - 62px);
  min-height: 620px;
  display: flex;
  align-items: center;
}
.narrative-top {
  position: absolute;
  top: 22px;
  left: 0;
  right: 0;
}
.narrative-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--faint);
}
.narrative-dots { display: flex; gap: 6px; }
.narrative-dots i { width: 16px; height: 2px; background: #2b3238; transition: background 0.3s var(--ease); }
.narrative-dots i.on { background: var(--amber); }
.narrative-grid {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--pad);
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(300px, 0.84fr);
  gap: clamp(30px, 4vw, 64px);
  align-items: center;
}

.stage { position: relative; height: 506px; }
.stage-item {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease-out), visibility 0.4s;
  pointer-events: none;
}
.stage-item.is-active { opacity: 1; visibility: visible; transform: none; pointer-events: auto; }
.stage-tag {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  color: var(--faint);
  text-align: center;
}

.doc-mock {
  width: min(100%, 560px);
  margin-inline: auto;
  padding: 28px 30px 22px;
  background: var(--paper-sheet);
  border: 1px solid var(--paper-rule);
  color: var(--paper-ink);
  box-shadow: 0 30px 60px -42px rgba(0, 0, 0, 0.8);
}
.doc-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--paper-rule);
  font-family: var(--mono);
  font-size: 8.5px;
  color: #6f6959;
}
.doc-mock h3 { margin: 16px 0 10px; font-family: var(--sans-sc); font-size: 17px; font-weight: 700; }
.doc-mock p { font-size: 12px; line-height: 2.05; color: #46433a; margin-bottom: 9px; }
.doc-mark { font-family: var(--mono); font-size: 9px !important; color: var(--stamp) !important; letter-spacing: 0.02em; }
.doc-hl {
  padding: 4px 6px;
  background: linear-gradient(transparent 6%, #f0e2b6 6%, #f0e2b6 94%, transparent 94%);
  color: var(--paper-ink) !important;
}
.doc-no { display: block; margin-top: 12px; text-align: center; font-family: var(--mono); font-size: 8.5px; color: #5f5a4c; }

.chunk-list { width: min(100%, 560px); margin-inline: auto; display: grid; gap: 6px; }
.chunk-list li {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.chunk-list .cno { font-family: var(--mono); font-size: 9px; color: var(--faint); }
.chunk-list .ctext { font-size: 11.5px; color: var(--dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chunk-list .cline { grid-column: 2; height: 3px; width: var(--w); background: #262d34; }
.chunk-list li.pick { border-color: rgba(234, 166, 74, 0.55); background: rgba(234, 166, 74, 0.055); }
.chunk-list li.pick .cno { color: var(--amber); }
.chunk-list li.pick .ctext { color: var(--ink); }
.chunk-list li.pick .cline { background: rgba(234, 166, 74, 0.45); }
.ctag { grid-column: 2; font-family: var(--mono); font-size: 8px; letter-spacing: 0.08em; color: var(--amber); }

.return-card {
  position: relative;
  width: min(100%, 560px);
  margin-inline: auto;
  padding: 22px 26px;
  background: var(--paper-sheet);
  border: 1px solid var(--paper-rule);
  color: var(--paper-ink);
  box-shadow: 0 30px 60px -42px rgba(0, 0, 0, 0.8);
}
.rc-query { display: flex; align-items: baseline; gap: 9px; font-family: var(--sans-sc); font-size: 15px; font-weight: 500; }
.rc-query span { font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.12em; color: var(--stamp); }
.rc-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 14px;
  padding: 8px 0;
  border-top: 1px solid var(--paper-rule);
  border-bottom: 1px solid var(--paper-rule);
  font-family: var(--mono);
  font-size: 10px;
}
.rc-doc { flex: 1; color: var(--paper-ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rc-pg { color: var(--stamp); }
.rc-sc { color: var(--paper-dim); }
.rc-slice {
  margin: 12px 0;
  padding-left: 10px;
  border-left: 1px solid #c9bfa8;
  font-size: 11.5px;
  line-height: 1.95;
  color: #46433a;
}
.rc-meta { display: flex; flex-wrap: wrap; gap: 4px 14px; font-family: var(--mono); font-size: 8.5px; color: #5f5a4c; }
.rc-stamp {
  position: absolute;
  right: 18px;
  bottom: 14px;
  padding: 3px 6px;
  border: 1.5px solid var(--stamp);
  color: var(--stamp);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  transform: rotate(-6deg);
  opacity: 0.9;
}

.chapters { display: grid; gap: 26px; }
.chapter { padding-left: 20px; border-left: 1px solid var(--line); transition: border-color 0.35s var(--ease); }
.chapter.is-active { border-left-color: var(--amber); }
.ch-no { font-family: var(--mono); font-size: 9px; letter-spacing: 0.16em; color: var(--faint); margin-bottom: 8px; }
.chapter h3 { font-family: var(--sans-sc); font-size: clamp(20px, 2vw, 26px); font-weight: 700; line-height: 1.4; letter-spacing: -0.015em; margin-bottom: 8px; color: #8d949b; transition: color 0.35s var(--ease); }
.chapter p { font-size: 12.5px; line-height: 1.95; color: #787f86; max-width: 34em; transition: color 0.35s var(--ease); }
.chapter.is-active h3 { color: var(--ink); }
.chapter.is-active p { color: var(--dim); }
.chapter code { font-size: 0.9em; color: inherit; }

.pages .section-note { margin-top: 10px; }

/* ============================== dual format ============================== */

.format-layout { display: grid; gap: 22px; }
.format-switch { display: flex; gap: 0; border: 1px solid var(--line); width: fit-content; }
.fmt-btn {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 11px 18px;
  font-size: 13px;
  color: var(--faint);
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}
.fmt-btn span { font-family: var(--mono); font-size: 9px; }
.fmt-btn + .fmt-btn { border-left: 1px solid var(--line); }
.fmt-btn:hover { color: var(--dim); }
.fmt-btn.is-active { background: var(--paper-ink); color: var(--paper); }
.fmt-btn.is-active span { color: var(--amber); }

.format-viewer { padding: clamp(20px, 2.6vw, 34px); display: grid; gap: 20px; }
.fmt-pane { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: clamp(20px, 3vw, 40px); align-items: start; }
.fmt-pane[hidden] { display: none; }

.orig-file { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border: 1px solid var(--paper-rule); background: #fffdf7; grid-column: 1 / -1; }
.orig-icon { width: 42px; height: 52px; border: 1px solid var(--stamp); display: grid; place-items: center; flex: none; }
.orig-icon span { font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.08em; color: var(--stamp); }
.orig-meta { display: flex; flex-direction: column; gap: 2px; }
.orig-meta b { font-size: 13px; }
.orig-meta span { font-family: var(--mono); font-size: 9px; color: #5f5a4c; }
.orig-badge { margin-left: auto; font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.08em; color: var(--paper-dim); border: 1px solid var(--paper-rule); padding: 3px 6px; }

.orig-page {
  padding: 22px 24px;
  border: 1px solid var(--paper-rule);
  background: #fffdf7;
  box-shadow: 0 18px 30px -26px rgba(52, 40, 18, 0.4);
}
.op-head { font-family: var(--sans-sc); font-size: 15px; font-weight: 700; margin-bottom: 10px; }
.op-p { font-size: 11.5px; line-height: 1.95; color: #46433a; margin-bottom: 8px; }
.op-hl { padding: 2px 4px; background: linear-gradient(transparent 8%, #f0e2b6 8%, #f0e2b6 92%, transparent 92%); color: var(--paper-ink); }
.op-cap { font-family: var(--mono); font-size: 8.5px; color: #5f5a4c; margin: 6px 0 2px; }
.op-fig { display: flex; align-items: flex-end; gap: 4px; height: 64px; margin: 12px 0 4px; padding: 8px 10px; border: 1px solid #e6ded0; }
.op-fig span { flex: 1; background: #d3c9b4; }
.op-fig span:nth-child(1) { height: 34%; }
.op-fig span:nth-child(2) { height: 62%; }
.op-fig span:nth-child(3) { height: 46%; }
.op-fig span:nth-child(4) { height: 82%; }
.op-fig span:nth-child(5) { height: 58%; }
.op-no { text-align: center; font-family: var(--mono); font-size: 8.5px; color: #5f5a4c; margin-top: 10px; }
.fmt-caption { font-size: 13px; line-height: 1.9; color: var(--paper-dim); }
.fmt-caption code { font-size: 0.92em; color: var(--paper-ink); }
.fmt-side { display: flex; flex-direction: column; gap: 20px; padding-top: 6px; }
.fmt-points { display: grid; gap: 0; }
.fmt-points li {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--paper-rule);
  font-size: 13px;
  line-height: 1.8;
  color: var(--paper-dim);
}
.fmt-points b { font-family: var(--mono); font-size: 9px; font-weight: 500; letter-spacing: 0.06em; color: var(--paper-ink); padding-top: 3px; }
.fmt-points code { font-size: 0.92em; color: var(--paper-ink); }

.md-file { grid-column: 1 / -1; border: 1px solid #1c2228; background: #12161b; }
.md-head { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid #232a31; font-family: var(--mono); font-size: 9.5px; color: #9aa1a8; }
.md-tag { color: var(--amber); font-size: 8.5px; letter-spacing: 0.1em; }
.md-head b { font-weight: 400; color: #d9d5cc; }
.md-head .orig-badge { border-color: #2b333b; color: #8b9299; }
.md-code { margin: 0; padding: 18px 18px 22px; font-size: 12px; line-height: 1.95; color: #c9c6bd; overflow-x: auto; }
.md-code .md-dim { color: #8b9299; }
.md-code .md-mark { color: var(--amber); }
.md-file + .fmt-caption { grid-column: 1 / -1; }

.format-callout {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding-top: 16px;
  border-top: 1px solid var(--paper-rule);
}
.fc-row { display: flex; align-items: baseline; gap: 10px; font-size: 11.5px; color: var(--paper-dim); }
.fc-row code { font-size: 10px; color: var(--paper-ink); }

/* ============================== retrieval tuning ============================== */

.tune-layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: clamp(24px, 3.4vw, 44px); align-items: stretch; }

.tune-chart { padding: clamp(20px, 2.4vw, 30px); display: flex; flex-direction: column; }
.tune-head { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--paper-rule); }
.tune-head > div { display: flex; align-items: center; gap: 10px; }
.tune-fit { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.1em; color: var(--stamp); border: 1.5px solid var(--stamp); padding: 2px 6px; }
.tune-count { font-family: var(--mono); font-size: 9px; color: var(--paper-dim); text-align: right; }
.tune-bars { display: flex; align-items: flex-end; gap: 4px; height: 150px; margin: 26px 0 10px; }
.tune-bars span { flex: 1; height: var(--h); background: #d9d0ba; transition: height 0.45s var(--ease-out); }
.tune-bars span.hot { background: var(--stamp); opacity: 0.78; }
.tune-axis { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 8.5px; color: var(--paper-dim); padding-top: 6px; border-top: 1px dashed var(--paper-rule); }
.tune-axis .base { color: var(--stamp); }
.tune-verdict { margin-top: 20px; font-size: 13px; line-height: 1.9; color: #3d3a31; }
.tune-note { margin-top: auto; padding-top: 14px; font-size: 13px; line-height: 1.85; color: var(--paper-dim); }
.tune-note code { font-size: 0.92em; color: var(--paper-ink); }

.tune-panel { border: 1px solid var(--line); background: var(--panel); padding: clamp(18px, 2.2vw, 26px); display: flex; flex-direction: column; }
.tune-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) minmax(0, 132px);
  gap: 12px;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}
.tr-k { font-family: var(--mono); font-size: 10.5px; color: var(--faint); }
.tr-v { font-family: var(--mono); font-size: 13px; color: var(--ink); }
.tr-v.accent { color: var(--amber); }
.tr-note { font-size: 10.5px; color: var(--faint); line-height: 1.5; text-align: right; }
.tr-modes { display: flex; gap: 6px; flex-wrap: wrap; }
.mode {
  padding: 4px 9px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--faint);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.mode:hover { color: var(--dim); border-color: #3a4149; }
.mode.is-active { border-color: var(--amber); color: var(--amber); }

.tune-switch { display: flex; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line-soft); }
.ts-opt {
  flex: 1;
  min-height: 40px;
  border: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--faint);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.ts-opt + .ts-opt { border-left: 0; }
.ts-opt:hover { color: var(--dim); }
.ts-opt.is-active { border-color: var(--amber); color: var(--ink); background: rgba(234, 166, 74, 0.07); }

.tune-result { margin-top: auto; padding-top: 18px; }
.tr-title { font-family: var(--mono); font-size: 9px; letter-spacing: 0.14em; color: var(--faint); margin-bottom: 8px; }
.tr-code { display: block; padding: 9px 11px; border: 1px solid var(--line); background: #0d1014; font-size: 10.5px; color: var(--green); overflow-x: auto; white-space: nowrap; }
.tr-text { margin-top: 10px; font-size: 11px; line-height: 1.8; color: var(--faint); }

.tune-foot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 44px;
  margin-top: 22px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--faint);
}
.tune-foot code { color: var(--dim); }

/* ============================== free stack ============================== */

.stack-route {
  display: flex;
  align-items: stretch;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--line);
  background: var(--paper-sheet);
  margin-bottom: 26px;
}
.route-step { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.rs-no { font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.1em; color: #5f5a4c; }
.route-step b { font-family: var(--sans-sc); font-size: 14px; font-weight: 700; }
.route-step small { font-size: 10.5px; line-height: 1.5; color: var(--paper-dim); }
.route-arrow { display: grid; place-items: center; font-family: var(--mono); font-size: 12px; color: #a49a84; flex: none; }
.rs-options { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 5px; }
.rs-options span { font-family: var(--mono); font-size: 8.5px; color: var(--paper-dim); border: 1px solid var(--paper-rule); padding: 2px 5px; }

.provider-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--line); background: var(--paper-sheet); }
.provider { padding: 20px 18px 18px; border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.provider:last-child { border-right: 0; }
.prov-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 14px; }
.prov-kind { font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.08em; color: #5f5a4c; }
.prov-free { font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.06em; color: var(--stamp); border: 1px solid rgba(178, 58, 32, 0.4); padding: 2px 5px; white-space: nowrap; }
.provider-local .prov-free { color: #446b46; border-color: rgba(68, 107, 70, 0.38); }
.provider h3 { font-family: var(--sans-sc); font-size: 18px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 8px; }
.provider > p { font-size: 12.5px; line-height: 1.9; color: var(--paper-dim); }
.provider dl { margin-top: auto; padding-top: 14px; display: grid; gap: 6px; }
.provider dl div { display: grid; gap: 1px; }
.provider dt { font-family: var(--mono); font-size: 8px; letter-spacing: 0.1em; color: #6f6959; }
.provider dd { font-size: 10.5px; line-height: 1.6; color: #46433a; }
.provider dd code { font-size: 0.92em; }

/* ============================== deploy ============================== */

.deploy-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr); gap: clamp(26px, 4vw, 56px); align-items: start; }
.deploy-grid > * { min-width: 0; }
.deploy-code { min-width: 0; }

.code-card { border: 1px solid var(--line); background: #0c0f12; min-width: 0; }
.code-card + .code-card { margin-top: 14px; }
.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 38px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--faint);
}
.copy {
  min-height: 32px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--faint);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.copy:hover { color: var(--amber); border-color: rgba(234, 166, 74, 0.5); }
.copy.is-done { color: var(--green); border-color: rgba(143, 202, 150, 0.5); }
.code-card pre { margin: 0; padding: 16px 18px 18px; overflow-x: auto; max-width: 100%; font-size: 11.5px; line-height: 1.85; color: #c3c0b7; }
.code-card pre .tok-key { color: var(--blue); }
.code-card pre .tok-str { color: var(--green); }
.code-card pre .tok-com { color: #71787f; }

.deploy-steps { display: grid; gap: 0; border-top: 1px solid var(--line); }
.deploy-steps li { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 16px; padding: 17px 0; border-bottom: 1px solid var(--line-soft); }
.step-no { font-family: var(--mono); font-size: 10px; color: var(--faint); padding-top: 4px; }
.deploy-steps h3 { font-family: var(--sans-sc); font-size: 16px; font-weight: 700; margin-bottom: 3px; }
.deploy-steps p { font-size: 12px; line-height: 1.85; color: var(--dim); }

.deploy-foot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 44px;
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  line-height: 1.85;
  color: var(--faint);
}
.deploy-foot a { color: var(--dim); border-bottom: 1px solid var(--faint); }
.deploy-foot a:hover { color: var(--amber); border-color: var(--amber); }
.deploy-foot code { color: var(--dim); }

/* ============================== cta ============================== */

.cta {
  position: relative;
  z-index: 1;
  overflow: hidden;
  background: var(--amber);
  color: #17120a;
  padding: clamp(64px, 8vw, 110px) 0;
}
.cta-inner { position: relative; z-index: 1; }
.cta-mark {
  position: absolute;
  right: -30px;
  top: 50%;
  width: min(36vw, 440px);
  height: auto;
  transform: translateY(-50%);
  color: rgba(23, 18, 10, 0.16);
  pointer-events: none;
}
.cta-inner .sec-no { color: rgba(23, 18, 10, 0.86); padding-top: 0; margin-bottom: 18px; }
.cta h2 {
  font-family: var(--sans-sc);
  font-weight: 700;
  font-size: clamp(40px, 5.4vw, 76px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.cta .btn-primary { background: #17120a; color: var(--amber); }
.cta .btn-primary:hover { background: #000; }
.cta .btn-ghost { border-color: rgba(23, 18, 10, 0.45); color: #17120a; }
.cta .btn-ghost:hover { border-color: #17120a; }
.cta-note { margin-top: 28px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: rgba(23, 18, 10, 0.86); }
.cta-evidence {
  position: absolute;
  right: clamp(40px, 7vw, 110px);
  top: 50%;
  width: min(31vw, 340px);
  transform: translateY(-50%) rotate(-2deg);
  padding: 20px 22px 18px;
  background: #faf7ee;
  border: 1px solid rgba(23, 18, 10, 0.22);
  box-shadow: 12px 16px 0 rgba(23, 18, 10, 0.1);
}
.ce-stamp {
  position: absolute;
  right: 16px;
  bottom: 14px;
  padding: 3px 6px;
  border: 1.5px solid var(--stamp);
  color: var(--stamp);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  transform: rotate(-5deg);
}
.ce-slice { font-size: 12px; line-height: 1.9; color: #3d3a31; max-width: 26em; }
.ce-meta { margin-top: 12px; padding-top: 9px; padding-right: 66px; border-top: 1px solid #ded6c5; font-family: var(--mono); font-size: 8.5px; color: #5f5a4c; }

/* ============================== footer ============================== */

.footer {
  position: relative;
  z-index: 1;
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 42px 0 34px;
}
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 26px 54px;
  align-items: start;
}
.footer-brand { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.footer-word { font-family: var(--mono); font-size: 14px; font-weight: 500; letter-spacing: 0.04em; }
.footer-tag { font-size: 11.5px; color: var(--faint); margin-left: 6px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; font-family: var(--mono); font-size: 10px; color: var(--faint); }
.footer-links a:hover { color: var(--amber); }
.footer-fine { grid-column: 1 / -1; margin-top: 4px; padding-top: 18px; border-top: 1px solid var(--line-soft); font-size: 13px; line-height: 1.85; color: var(--faint); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ============================== motion initial states ============================== */

html.motion-ready .display .line span { transform: translateY(112%); }
html.motion-ready .hero-side,
html.motion-ready .session { opacity: 0; }
html.motion-ready .hero-side { transform: translateY(18px); }
html.motion-ready .session { transform: translateY(28px); }

html.motion-ready [data-reveal] { opacity: 0; transform: translateY(22px); }
html.motion-ready .sec-no,
html.motion-ready .section-head h2,
html.motion-ready .sec-lede { opacity: 0; transform: translateY(18px); }

/* ============================== motion initial states ============================== */
html:not(.motion-ready) .display .line span,
html.motion-off .display .line span { transform: none; }
html:not(.motion-ready) .narrative-top,
html.motion-off .narrative-top { display: none; }
html:not(.motion-ready) .narrative,
html.motion-off .narrative { height: auto; }
html:not(.motion-ready) .stage-item,
html.motion-off .stage-item { position: relative; opacity: 1; visibility: visible; transform: none; }
html:not(.motion-ready) .stage,
html.motion-off .stage { height: auto; display: grid; gap: 40px; }
html:not(.motion-ready) .chapters,
html.motion-off .chapters { margin-top: 34px; }
html:not(.motion-ready) .chapter,
html.motion-off .chapter { opacity: 1; }
html:not(.motion-ready) .narrative-pin,
html.motion-off .narrative-pin { position: static; height: auto; min-height: 0; }
html:not(.motion-ready) .narrative-grid,
html.motion-off .narrative-grid { grid-template-columns: 1fr; }
html:not(.motion-ready) .stage-tag,
html.motion-off .stage-tag { text-align: left; }

/* ============================== responsive ============================== */

@media (max-width: 1180px) {
  .nav { gap: 18px; }
  .nav a { font-size: 12.5px; }
  .section-head { grid-template-columns: 0.6fr 4fr 3.4fr; }
  .provider-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .provider:nth-child(2) { border-right: 0; }
  .provider:nth-child(1), .provider:nth-child(2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 1020px) {
  .narrative { height: auto; }
  .narrative-top { display: none; }
  .nav { display: none; }
  .menu-toggle { display: inline-flex; align-items: center; height: 40px; }
  .top-cta { height: 40px; }
  .topbar-actions { margin-left: auto; }
  .mobile-nav { display: block; }
  .mobile-nav[hidden] { display: none; }

  .hero-grid { grid-template-columns: 1fr; align-items: start; }
  .hero-side { padding-top: 4px; }
  .hero-facts { max-width: 560px; }

  .session-body { grid-template-columns: 1fr; }
  .toolrail { border-left: 0; border-top: 1px solid var(--line); flex-direction: row; flex-wrap: wrap; align-items: flex-start; gap: 14px 26px; }
  .rail-list { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 24px; flex: 1; min-width: 280px; }
  .rail-note { margin-top: 0; flex-basis: 100%; }

  .section-head { grid-template-columns: 1fr; gap: 14px; }
  .sec-no { padding-top: 0; }
  .sec-lede { max-width: 46em; }

  .tool-body { grid-template-columns: 1fr; }
  .tool-list { border-right: 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; }
  .tool-list li { border-right: 1px solid var(--line-soft); }
  .tool-list li:nth-child(2n) { border-right: 0; }
  .tool-detail { min-height: 0; }

  .answer-layout { grid-template-columns: 1fr; }
  .answer-notes { position: static; }
  .note-body { min-height: 0; }

  .narrative-pin { position: static; height: auto; min-height: 0; padding-block: 10px; }
  .narrative-grid { grid-template-columns: 1fr; }
  .stage { height: auto; display: grid; gap: 36px; }
  .stage-item { position: relative; opacity: 1; visibility: visible; transform: none; }
  .stage-item:not(.is-active) { opacity: 1; }
  .chapters { margin-top: 30px; }
  .chapter { opacity: 1; }

  .fmt-pane { grid-template-columns: 1fr; }
  .format-viewer { gap: 24px; }

  .tune-layout { grid-template-columns: 1fr; }
  .deploy-grid { grid-template-columns: 1fr; }
  .deploy-code { order: 2; }
  .deploy-steps { order: 1; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .brand-chip { display: inline-block; font-size: 8px; padding: 2px 6px; margin-left: 0; }
  .top-ver { display: none; }
  .ghlink { display: none; }
  .display { font-size: clamp(38px, 10.6vw, 62px); line-height: 1.1; }
  .hero-facts { flex-wrap: wrap; gap: 18px 26px; }
  .session-bar { gap: 8px; }
  .s-url { display: none; }
  .thread { padding: 16px 14px; }
  .msg { grid-template-columns: 1fr; gap: 2px; }
  .msg .who { text-align: left; padding-top: 0; }
  .call { grid-template-columns: 1fr; gap: 1px; padding-left: 8px; }
  .call .res { white-space: normal; overflow: visible; }
  .hit { margin-left: 0; }
  .hit-top { flex-direction: column; gap: 2px; }
  .tool-list { grid-template-columns: 1fr; }
  .tool-list li { border-right: 0; }
  .tool-groups { flex-wrap: wrap; overflow: visible; }
  .tool-tab { flex: 1 0 50%; padding: 12px 14px; border-bottom: 1px solid var(--line-soft); }
  .tool-tab:nth-child(odd) { border-right: 1px solid var(--line-soft); }
  .tool-indicator { display: none; }
  .tune-switch .ts-opt { min-height: 44px; font-size: 12px; }
  .copy { min-height: 36px; padding: 7px 10px; }
  .cta-evidence { display: none; }
  .cta-mark { opacity: 0.5; }
  .td-cols { grid-template-columns: 1fr; gap: 14px; }
  .tool-foot, .tune-foot, .deploy-foot { grid-template-columns: 1fr; }
  .td-col p { font-size: 11px; }
  .payload-hits li { grid-template-columns: 18px minmax(0, 1fr) 30px 40px 50px; }
  .payload-hits .d { font-size: 10.5px; }
  .stack-route { flex-direction: column; }
  .route-arrow { justify-items: start; padding-left: 2px; transform: rotate(90deg); width: 20px; }
  .provider-grid { grid-template-columns: 1fr; }
  .provider { border-right: 0; border-bottom: 1px solid var(--line); }
  .provider:last-child { border-bottom: 0; }
  .provider:nth-child(1) { border-bottom: 1px solid var(--line); }
  .hero-foot, .footer-fine { flex-direction: column; gap: 6px; }
  .hero-foot-r { text-align: left; }
  .format-switch { width: 100%; }
  .fmt-btn { flex: 1; justify-content: center; }
  .orig-file { flex-wrap: wrap; }
  .orig-badge { margin-left: 0; }
  .fmt-points li { grid-template-columns: 76px minmax(0, 1fr); gap: 10px; }
  .cta-mark { width: 64vw; right: -22vw; opacity: 0.7; }
  .td-code { white-space: pre-wrap; word-break: break-word; }
  .tune-row { grid-template-columns: 86px minmax(0, 1fr); row-gap: 6px; }
  .tr-note { grid-column: 2; text-align: left; }
  .fc-row { flex-wrap: wrap; gap: 2px 10px; }
  .fc-row span { margin-left: auto; }
  .cta-actions { flex-direction: column; align-items: flex-start; }
  .cta-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html.motion-ready .display .line span { transform: none; }
  html.motion-ready .hero-side,
  html.motion-ready .session,
  html.motion-ready [data-reveal],
  html.motion-ready .sec-no,
  html.motion-ready .section-head h2,
  html.motion-ready .sec-lede { opacity: 1; transform: none; }
}