/* ============================================================
   LocalReply — landing page
   Aesthetic: bilingual editorial. Reddit-orange thread runs
   the whole page like a comment-tree gutter; sections sit as
   chapters (¶01, ¶02…) with hand-set typography.
   ============================================================ */

:root {
  /* Palette — warm cream paper, ink, Reddit orange */
  --bg: #FFF8F1;
  --bg-2: #FBF1E2;
  --paper: #FFFFFF;
  --ink: #1A1410;
  --ink-2: #2A2520;
  --ink-3: #6B5F52;
  --ink-4: #A89B8E;
  --rule: #E8DFD3;
  --rule-2: #F1E8DA;
  --orange: #FF4500;
  --orange-burnt: #EA580C;
  --orange-soft: #FFE5D0;
  --orange-lift: #FFF0E0;
  --green: #15803D;
  --green-soft: #DCFCE7;

  /* Typography */
  --display: "Fraunces", "Iowan Old Style", "Apple Garamond", Georgia, serif;
  --body: "Bricolage Grotesque", "Hiragino Kaku Gothic ProN", "Yu Gothic", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Spacing scale (modular) */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;
  --s-10: 128px;
  --s-11: 192px;

  /* Layout */
  --container: 1140px;
  --rail-x: 64px;
  --gutter-h: clamp(20px, 4vw, 56px);
}

@media (prefers-color-scheme: dark) {
  /* Light-mode by intent — design is editorial print, no dark theme. */
}

* { box-sizing: border-box; }

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-2);
  font-family: var(--body);
  font-weight: 400;
  line-height: 1.55;
  font-feature-settings: "ss01", "ss02", "kern", "calt";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  background-image:
    radial-gradient(circle at 0% 0%, color-mix(in oklab, var(--orange) 6%, transparent) 0%, transparent 38%),
    radial-gradient(circle at 100% 8%, color-mix(in oklab, var(--orange) 4%, transparent) 0%, transparent 42%);
  background-attachment: fixed;
}

/* CJK locale defaults — slightly tighter optical line-height for ja/zh. */
:lang(ja) body, body[data-locale="ja"] {
  --body: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Bricolage Grotesque", system-ui, sans-serif;
  line-height: 1.75;
}
:lang(zh) body, body[data-locale="zh"] {
  --body: "PingFang SC", "Microsoft YaHei", "Bricolage Grotesque", system-ui, sans-serif;
  line-height: 1.75;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; padding: 0; }

::selection { background: var(--orange); color: #fff; }

/* ============================================================
   Reddit-thread vertical gutter — runs the full page on desktop
   ============================================================ */
.thread-line {
  position: fixed;
  left: var(--rail-x);
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(
    to bottom,
    transparent 0,
    var(--rule) 80px,
    var(--rule) calc(100% - 80px),
    transparent 100%
  );
  pointer-events: none;
  z-index: 1;
}
.thread-line::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom,
    transparent,
    var(--orange) 22%,
    var(--orange) 78%,
    transparent);
  opacity: .15;
}
@media (max-width: 900px) { .thread-line { display: none; } }

/* ============================================================
   Topbar
   ============================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: var(--s-5);
  padding: var(--s-4) var(--gutter-h);
  background: color-mix(in oklab, var(--bg) 92%, white);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid color-mix(in oklab, var(--rule) 70%, transparent);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 24, "SOFT" 30;
}
.brand-mark {
  display: inline-block;
  width: 9px; height: 9px;
  background: var(--orange);
  border-radius: 50%;
  transform: translateY(-1px);
  box-shadow: 0 0 0 4px var(--orange-lift);
}
.brand-word { font-style: italic; }

.lang-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 3px;
}
.lang-pill {
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-3);
  border-radius: 999px;
  letter-spacing: 0;
  transition: color 120ms, background 120ms;
}
.lang-pill:hover { color: var(--ink); background: var(--bg-2); }
.lang-pill.is-active {
  background: var(--ink);
  color: var(--bg);
}

.topbar-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: var(--orange);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  border-radius: 999px;
  transition: background 120ms, transform 120ms;
}
.topbar-cta:hover { background: var(--orange-burnt); transform: translateY(-1px); }
.topbar-cta span { font-family: var(--mono); }

@media (max-width: 720px) {
  .topbar { gap: var(--s-3); padding: var(--s-3) var(--gutter-h); }
  .lang-nav { order: 3; margin-left: 0; }
  .topbar-cta { padding: 7px 14px; font-size: 13px; }
}

/* ============================================================
   Section primitives
   ============================================================ */
main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter-h) 0 calc(var(--rail-x) + 24px);
  position: relative;
  z-index: 2;
}
@media (max-width: 900px) {
  main { padding: 0 var(--gutter-h); }
}

section {
  position: relative;
  padding-top: var(--s-9);
  padding-bottom: var(--s-9);
  scroll-margin-top: 80px;
}
section + section { border-top: 1px dashed var(--rule); }
section:first-of-type { padding-top: var(--s-7); }

.section-rail {
  position: absolute;
  left: -88px;
  top: var(--s-9);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-4);
}
.rail-marker {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--orange);
  box-shadow: 0 0 0 4px var(--bg);
  position: relative;
  z-index: 2;
}
@media (max-width: 900px) {
  .section-rail {
    position: static;
    flex-direction: row;
    margin-bottom: var(--s-3);
  }
  .rail-marker { box-shadow: none; }
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange-burnt);
  text-transform: uppercase;
  margin: 0 0 var(--s-5);
  font-weight: 500;
}

.section-title {
  font-family: var(--display);
  font-weight: 500;
  font-variation-settings: "opsz" 96, "SOFT" 50;
  font-size: clamp(32px, 4.5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0 0 var(--s-7);
  max-width: 22ch;
}
.section-title .kicker {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--orange-burnt);
  margin-bottom: var(--s-3);
  font-variation-settings: normal;
}

/* ============================================================
   Hero (¶01)
   ============================================================ */
.hero {
  padding-top: var(--s-9);
}
.hero-headline {
  font-family: var(--display);
  font-weight: 500;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  font-size: clamp(40px, 6.5vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin: 0 0 var(--s-6);
  max-width: none;
}
.hero-headline .line {
  display: block;
}
/* Line 2 is the headline / KPI statement — biggest type */
.hero-headline .line:nth-child(2) {
  max-width: 28ch;
}
/* Lines 1 and 3 are supporting context — small paragraph type */
.hero-headline .line:nth-child(1),
.hero-headline .line:nth-child(3) {
  font-size: clamp(15px, 1.4vw, 19px);
  line-height: 1.5;
  letter-spacing: 0;
  font-variation-settings: "opsz" 24, "SOFT" 50;
  font-weight: 400;
  color: var(--ink-3);
  max-width: 52ch;
}
.hero-headline .line:nth-child(1) {
  margin-bottom: var(--s-3);
}
.hero-headline .line:nth-child(3) {
  margin-top: var(--s-4);
  font-style: italic;
  color: var(--orange-burnt);
}
.hero-headline em {
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 144, "SOFT" 100;
  color: var(--orange-burnt);
}

.hero-sub {
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0 0 var(--s-7);
  max-width: 56ch;
}
.hero-sub .pause {
  display: inline-block;
  border-bottom: 2px solid var(--orange-soft);
  padding-bottom: 2px;
}
.hero-sub wbr { display: inline; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-bottom: var(--s-8);
}

.hero-fineprint {
  margin-top: var(--s-5);
  font-size: 14px;
  color: var(--ink-3);
}
.hero-fineprint a {
  color: var(--orange-burnt);
  border-bottom: 1px solid currentColor;
}
.hero-fineprint a:hover { color: var(--orange); }

/* ============================================================
   Hero fusion animation — 4 sources converge into 1 reply
   ============================================================ */
.hero-demo,
.hero-fusion {
  margin: var(--s-8) 0 var(--s-3);
}

.hero-fusion {
  display: block;
}

.hf-stage {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 64px minmax(300px, 1.4fr);
  align-items: center;
  position: relative;
}

.hf-sources {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hf-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 10px 14px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 1px 0 var(--rule);
}

/* Source cards: invisible until JS triggers .is-loaded */
.hf-source {
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 360ms cubic-bezier(.2,.9,.3,1), transform 360ms cubic-bezier(.2,.9,.3,1), border-color 200ms;
}
.hf-source.is-loaded {
  opacity: 1;
  transform: translateX(0);
  border-color: color-mix(in oklab, var(--orange) 35%, var(--rule));
}
.hf-source-user.is-loaded {
  border-color: var(--orange);
  background: linear-gradient(180deg, var(--paper), var(--orange-lift));
}

.hf-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.hf-tag-output {
  color: var(--orange-burnt);
}

.hf-text {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
  margin: 0;
  word-break: break-word;
}
.hf-text:lang(ja) {
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", var(--body);
  line-height: 1.65;
}
.hf-text:lang(zh) {
  line-height: 1.65;
}

.hf-check {
  position: absolute;
  top: 10px;
  right: 12px;
  font-size: 11px;
  color: var(--orange);
  font-weight: 700;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 200ms, transform 200ms;
}
.hf-source.is-loaded .hf-check {
  opacity: 1;
  transform: scale(1);
}
.hf-source-user .hf-check { display: none; } /* user card never gets the auto-check */

/* Center column: SVG converging lines + fusion node */
.hf-converge {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  min-height: 240px;
}
.hf-converge svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.hf-line {
  fill: none;
  stroke: var(--orange);
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-dasharray: 220;
  stroke-dashoffset: 220;
  opacity: 0.25;
  transition: stroke-dashoffset 600ms cubic-bezier(.2,.9,.3,1), opacity 300ms;
}
.hf-line.is-flowing {
  stroke-dashoffset: 0;
  opacity: 0.55;
}
.hero-fusion.is-fusing .hf-line {
  animation: hf-line-pulse 700ms cubic-bezier(.2,.9,.3,1);
}
@keyframes hf-line-pulse {
  0%   { opacity: 0.55; stroke-width: 1.4; }
  40%  { opacity: 1;    stroke-width: 2.4; }
  100% { opacity: 0.7;  stroke-width: 1.4; }
}

.hf-node {
  position: relative;
  z-index: 2;
  width: 14px;
  height: 14px;
  background: var(--orange);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--bg), 0 0 0 5px color-mix(in oklab, var(--orange) 25%, transparent);
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 240ms, transform 320ms cubic-bezier(.2,.9,.3,1);
}
.hero-fusion.is-fusing .hf-node {
  opacity: 1;
  transform: scale(1);
}
.hero-fusion.is-output-revealed .hf-node {
  animation: hf-node-pulse 1.6s ease-in-out infinite;
}
@keyframes hf-node-pulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--bg), 0 0 0 5px color-mix(in oklab, var(--orange) 25%, transparent); }
  50%      { box-shadow: 0 0 0 4px var(--bg), 0 0 0 11px color-mix(in oklab, var(--orange) 12%, transparent); }
}

/* Output card */
.hf-output {
  align-self: center;
  border-color: var(--orange);
  background: linear-gradient(180deg, var(--paper), var(--orange-lift));
  box-shadow: 0 1px 0 var(--rule), 0 18px 36px -20px rgba(255, 69, 0, 0.3);
  padding: 14px 16px;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 400ms cubic-bezier(.2,.9,.3,1), transform 400ms cubic-bezier(.2,.9,.3,1);
}
.hero-fusion.is-output-revealed .hf-output {
  opacity: 1;
  transform: translateX(0);
}

.hf-output-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  border-bottom: 1px dashed color-mix(in oklab, var(--orange) 30%, transparent);
  padding-bottom: 6px;
  margin-bottom: 4px;
}
.hf-output-status {
  font-family: var(--display);
  font-style: italic;
  font-size: 11px;
  color: var(--orange-burnt);
}

.hf-output-text {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
  min-height: 80px;
}

/* Cursors (typing + streaming) */
.hf-cursor {
  display: inline-block;
  width: 1px;
  height: 1.05em;
  background: var(--orange);
  vertical-align: text-bottom;
  margin-left: 1px;
  opacity: 0;
}
.hf-cursor.is-blinking {
  opacity: 1;
  animation: hf-blink 1s steps(2, start) infinite;
}
@keyframes hf-blink { to { background: transparent; } }

/* Caption below the stage */
.hf-caption {
  margin: var(--s-4) 0 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  text-align: center;
  opacity: 0;
  transition: opacity 400ms;
}
.hero-fusion.is-playing .hf-caption {
  opacity: 1;
}

/* Mobile: stack vertically, hide SVG converge, simple ↓ separator */
@media (max-width: 760px) {
  .hf-stage {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .hf-converge {
    min-height: 28px;
  }
  .hf-converge svg { display: none; }
  .hf-converge::before {
    content: "↓";
    font-size: 22px;
    color: var(--orange);
    font-family: var(--mono);
  }
  .hf-node {
    display: none;
  }
}

/* Reduced motion: skip enter/flow animations, show end state */
@media (prefers-reduced-motion: reduce) {
  .hf-source { opacity: 1; transform: none; transition: none; }
  .hf-line { stroke-dashoffset: 0; opacity: 0.5; transition: none; animation: none; }
  .hf-node { opacity: 1; transform: scale(1); animation: none; }
  .hf-output { opacity: 1; transform: none; transition: none; }
  .hf-cursor { display: none; }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.005em;
  transition: background 120ms, color 120ms, transform 120ms, border-color 120ms;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--orange);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--paper); }
.btn-secondary {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--rule);
}
.btn-secondary:hover { border-color: var(--orange); color: var(--orange-burnt); }
.btn-full { width: 100%; }
.btn-large { padding: 18px 32px; font-size: 17px; }

/* ============================================================
   ¶02 Problem
   ============================================================ */
.problem-body {
  max-width: 64ch;
  font-size: clamp(17px, 1.4vw, 19px);
  line-height: 1.7;
  color: var(--ink-2);
}
.problem-body p { margin: 0 0 var(--s-5); }
.problem-body em {
  font-style: italic;
  color: var(--orange-burnt);
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.04em;
}
.problem-body .lead {
  font-size: 1.15em;
  color: var(--ink);
  font-weight: 400;
}

/* ============================================================
   ¶02 Frictions — named pain-points
   ============================================================ */
.frictions {
  margin: var(--s-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-4);
  border-top: 1px dashed var(--rule);
  padding-top: var(--s-5);
}
.friction {
  display: grid;
  grid-template-columns: minmax(180px, 240px) 1fr;
  gap: var(--s-5);
  align-items: baseline;
  padding-bottom: var(--s-4);
  border-bottom: 1px dashed var(--rule);
}
.friction:last-child { border-bottom: 0; padding-bottom: 0; }
.friction dt {
  font-family: var(--display);
  font-style: italic;
  font-weight: 500;
  font-variation-settings: "opsz" 60, "SOFT" 100;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--orange-burnt);
  margin: 0;
}
.friction dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
}
.friction dd em {
  font-family: var(--display);
  font-style: italic;
  font-weight: 500;
  color: var(--ink);
}
.frictions-foot {
  margin: var(--s-5) 0 0;
  font-size: clamp(15px, 1.3vw, 17px);
  color: var(--ink);
  font-weight: 500;
  border-top: 1px solid var(--orange);
  padding-top: var(--s-4);
  max-width: 64ch;
}
@media (max-width: 680px) {
  .friction {
    grid-template-columns: 1fr;
    gap: var(--s-2);
  }
  .friction dt { font-size: 22px; }
}

/* ============================================================
   ¶04 Versus — ChatGPT vs LocalReply, side-by-side workflows
   ============================================================ */
.versus-lead {
  font-size: clamp(16px, 1.4vw, 18px);
  color: var(--ink-3);
  margin: 0 0 var(--s-6);
  max-width: 56ch;
  line-height: 1.6;
}
.versus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-4);
}
@media (max-width: 760px) {
  .versus-grid { grid-template-columns: 1fr; gap: var(--s-5); }
}
.versus-col {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: var(--s-6);
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
}
.versus-them {
  background: color-mix(in oklab, var(--bg-2) 50%, white);
  color: var(--ink-3);
}
.versus-us {
  border-color: var(--orange);
  background: linear-gradient(180deg, var(--paper), var(--orange-lift));
  box-shadow: 0 24px 48px -32px rgba(255, 69, 0, 0.4);
}
.versus-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--s-3);
  border-bottom: 1px dashed var(--rule);
  padding-bottom: var(--s-3);
}
.versus-tag {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink-3);
}
.versus-tag-us { color: var(--orange-burnt); }
.versus-time {
  font-family: var(--display);
  font-style: italic;
  font-size: 16px;
  color: var(--ink-4);
  font-weight: 500;
}
.versus-time-us { color: var(--orange-burnt); }
.versus-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  counter-reset: vstep;
}
.versus-steps li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: var(--s-3);
  font-size: 14px;
  line-height: 1.5;
  align-items: baseline;
}
.vs-num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.versus-them .vs-num {
  background: color-mix(in oklab, var(--ink-4) 35%, white);
  color: var(--ink-3);
}
.versus-us .vs-num {
  background: var(--orange);
  color: #fff;
}
.vs-step { color: inherit; }
.versus-them .vs-step {
  text-decoration: line-through;
  text-decoration-color: color-mix(in oklab, var(--ink-3) 50%, transparent);
  text-decoration-thickness: 1px;
  color: var(--ink-3);
}
.versus-them .vs-keep .vs-step {
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
}
.versus-them .vs-keep .vs-num {
  background: var(--ink);
  color: var(--bg);
}
.versus-us .vs-step em {
  font-style: italic;
  font-family: var(--display);
  color: var(--orange-burnt);
  font-weight: 500;
}
.versus-foot {
  margin: var(--s-6) 0 0;
  font-size: 15px;
  color: var(--ink-2);
  font-style: italic;
  font-family: var(--display);
  font-variation-settings: "opsz" 36, "SOFT" 100;
  max-width: 56ch;
  font-weight: 500;
}
.versus-foot-mini {
  margin: var(--s-3) 0 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-3);
  font-style: italic;
  font-family: var(--display);
  font-variation-settings: "opsz" 24, "SOFT" 50;
  max-width: 64ch;
}

/* ============================================================
   ¶03 How — steps + panel mock
   ============================================================ */
.how-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--s-8);
  align-items: start;
}
@media (max-width: 980px) {
  .how-grid { grid-template-columns: 1fr; }
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: var(--s-7);
}
.steps li {
  position: relative;
  padding-left: 0;
  max-width: 46ch;
}
.step-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--orange-burnt);
  letter-spacing: 0.14em;
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}
.steps h3 {
  font-family: var(--display);
  font-weight: 500;
  font-variation-settings: "opsz" 60, "SOFT" 50;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.15;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 0 0 var(--s-3);
}
.steps p {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-3);
}

/* Panel mock — almost a 1:1 of the actual extension UI */
.panel-mock-wrap {
  display: flex;
  justify-content: center;
  position: sticky;
  top: 100px;
}
@media (max-width: 980px) {
  .panel-mock-wrap { position: static; }
}
.panel-mock {
  width: 360px;
  max-width: 100%;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 14px;
  box-shadow:
    0 1px 0 var(--rule),
    0 24px 60px -28px rgba(28, 17, 5, 0.35),
    0 8px 24px -16px rgba(122, 76, 12, 0.25);
  font-family: -apple-system, BlinkMacSystemFont, var(--body);
  font-size: 13px;
  color: #111827;
  overflow: hidden;
}
.pm-hdr {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  background: linear-gradient(180deg, var(--bg-2), #FFFFFF);
  border-bottom: 1px solid #f3f4f6;
}
.pm-title { color: var(--ink); }
.pm-title b { color: var(--orange-burnt); font-weight: 700; }
.pm-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #FEF3C7;
  color: #92400E;
  font-weight: 600;
  margin-left: auto;
}
.pm-toggle { color: #6B7280; font-weight: 600; margin-left: 4px; }

.pm-body {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.pm-ctx {
  font-size: 11px;
  color: #6B7280;
  border: 1px dashed #E5E7EB;
  padding: 7px 9px;
  border-radius: 8px;
}
.pm-ctx b { color: #111827; }
.pm-sumtoggle {
  background: #F3F4F6;
  border-radius: 8px;
  padding: 7px 11px;
  font-size: 12px;
  color: #1F2937;
  text-align: left;
}
.pm-label {
  font-size: 11px;
  color: #6B7280;
  font-weight: 600;
  margin-top: 2px;
}
.pm-select {
  background: #fff;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  color: #111827;
}
.pm-caret { color: #9CA3AF; }
.pm-textarea {
  background: #fff;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 9px 11px;
  min-height: 52px;
  font-size: 13px;
  line-height: 1.55;
  color: #111827;
  white-space: pre-wrap;
  word-break: break-word;
}
.pm-input {
  border-color: var(--orange-soft);
  box-shadow: inset 0 0 0 1px var(--orange);
  border-color: var(--orange);
}
.pm-output {
  background: #F9FAFB;
}
.pm-cursor {
  display: inline-block;
  width: 1px;
  height: 1.1em;
  background: var(--orange);
  margin-left: 1px;
  vertical-align: text-bottom;
  animation: blink 1s steps(2, start) infinite;
}
@keyframes blink { to { background: transparent; } }
.pm-cursor-out { background: var(--ink); }
.pm-primary {
  background: var(--orange);
  color: #fff;
  border-radius: 8px;
  padding: 8px 12px;
  font-weight: 600;
  font-size: 13px;
  flex: 1;
}
.pm-secondary {
  background: #F3F4F6;
  color: #111827;
  border-radius: 8px;
  padding: 8px 12px;
  font-weight: 600;
  font-size: 13px;
  flex: 1;
}
.pm-row { display: flex; gap: 8px; }
.pm-foot {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #6B7280;
  padding-top: 4px;
}
.pm-native {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 2px;
}
.pm-native-title {
  font-size: 11px;
  color: #6B7280;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}
.pm-native-status { color: #9CA3AF; font-weight: 500; }
.pm-native-body {
  background: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.5;
  color: #1F2937;
  min-height: 32px;
  white-space: pre-wrap;
}

/* ============================================================
   ¶04 Features
   ============================================================ */
.feat-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-7) var(--s-8);
  align-items: start;
}
@media (max-width: 720px) {
  .feat-list { grid-template-columns: 1fr; gap: var(--s-7); }
}
.feat {
  position: relative;
  padding-left: var(--s-6);
}
.feat-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--orange-burnt);
  letter-spacing: 0.14em;
  font-weight: 500;
  position: absolute;
  left: 0;
  top: 4px;
}
.feat-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange-burnt);
  background: var(--orange-lift);
  padding: 3px 9px;
  border-radius: 999px;
  font-weight: 500;
  margin-bottom: var(--s-3);
}
.feat h3 {
  font-family: var(--display);
  font-weight: 500;
  font-variation-settings: "opsz" 48, "SOFT" 50;
  font-size: 26px;
  line-height: 1.18;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 0 0 var(--s-3);
}
.feat p {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
}
.feat p em {
  font-family: var(--display);
  font-style: italic;
  color: var(--orange-burnt);
  font-weight: 500;
  font-size: 1.05em;
}

/* ============================================================
   ¶05 Pricing / plans
   ============================================================ */
.plan-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-5);
  align-items: stretch;
}
@media (max-width: 760px) {
  .plan-grid { grid-template-columns: 1fr; }
}
.plan {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 18px;
  padding: var(--s-7);
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
}
.plan-pro {
  border-color: var(--orange);
  background: linear-gradient(180deg, var(--paper) 0%, var(--orange-lift) 100%);
  box-shadow: 0 24px 48px -32px rgba(255, 69, 0, 0.5);
  position: relative;
}
.plan-pro::before {
  content: "→";
  position: absolute;
  top: -14px;
  right: 32px;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 14px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}
.plan-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.plan-tag-pro { color: var(--orange-burnt); }
.plan-tag-pro::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--orange);
}
.plan-price {
  font-family: var(--display);
  font-weight: 500;
  font-variation-settings: "opsz" 96, "SOFT" 50;
  font-size: clamp(48px, 6vw, 64px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 8px 0 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.plan-price-strike {
  font-size: 0.5em;
  color: var(--ink-4);
  text-decoration: line-through;
  font-weight: 400;
}
.plan-price-now { color: var(--orange-burnt); }
.plan-cycle {
  font-family: var(--body);
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: 0;
}
.plan-discount {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--orange-burnt);
  font-weight: 500;
}
.plan-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.plan-list li {
  font-size: 15px;
  color: var(--ink-2);
  position: relative;
  padding-left: 22px;
  line-height: 1.45;
}
.plan-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 8px; height: 2px;
  background: var(--orange);
}
.plan-list li b { color: var(--ink); font-weight: 600; }
.plan-fine {
  font-size: 12px;
  color: var(--ink-3);
  margin: 0;
}

/* Monthly / Yearly toggle inside the Pro card */
.billing-toggle {
  display: inline-flex;
  align-self: flex-start;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 3px;
  margin: 10px 0 4px;
  gap: 2px;
}
.bt-opt {
  appearance: none;
  border: 0;
  background: transparent;
  font: inherit;
  font-family: var(--body);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-3);
  padding: 5px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 140ms, color 140ms;
  letter-spacing: 0;
  white-space: nowrap;
}
.bt-opt:hover { color: var(--ink); }
.bt-opt.is-active {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 1px 2px rgba(255, 69, 0, 0.25);
}
.bt-opt.is-active:hover { color: #fff; }

/* Success page (post-checkout) */
.success-main {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
  padding: var(--s-9) var(--gutter-h) var(--s-8);
}
.success-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green);
  margin: 0 0 var(--s-3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.success-eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--green-soft);
}
.success-main h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 var(--s-3);
  font-variation-settings: "opsz" 96, "SOFT" 20;
}
.success-lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0 0 var(--s-7);
  max-width: 56ch;
}
.key-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  margin: 0 0 var(--s-6);
  box-shadow: 0 4px 24px -16px rgba(28, 17, 5, 0.18);
}
.key-card-h {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.key-display {
  font-family: var(--mono);
  font-size: clamp(15px, 2.6vw, 19px);
  line-height: 1.4;
  color: var(--ink);
  background: var(--orange-lift);
  border: 1px dashed var(--orange);
  border-radius: 10px;
  padding: var(--s-4);
  word-break: break-all;
  user-select: all;
}
.key-actions {
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
}
.key-actions .btn { flex: 1; min-width: 160px; }
.copy-feedback {
  font-size: 13px;
  color: var(--green);
  font-weight: 500;
  margin: 0;
  min-height: 1.4em;
  font-family: var(--mono);
}
.success-steps {
  list-style: none;
  margin: var(--s-7) 0 0;
  padding: 0;
  counter-reset: stepc;
}
.success-steps li {
  position: relative;
  padding: 0 0 var(--s-4) var(--s-7);
  counter-increment: stepc;
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.6;
}
.success-steps li::before {
  content: counter(stepc);
  position: absolute;
  left: 0; top: 0;
  width: 28px; height: 28px;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.success-steps li b { color: var(--ink); font-weight: 600; }
.success-empty {
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: var(--s-5);
  font-size: 15px;
  color: var(--ink-3);
  line-height: 1.6;
}
.success-empty b { color: var(--ink); font-weight: 600; }
:lang(ja) .success-main, body[data-locale="ja"] .success-main,
:lang(zh) .success-main, body[data-locale="zh"] .success-main {
  line-height: 1.7;
}

/* ============================================================
   ¶06 FAQ
   ============================================================ */
.faq-list {
  border-top: 1px solid var(--rule);
}
.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: var(--s-5) 0;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  font-family: var(--display);
  font-weight: 500;
  font-variation-settings: "opsz" 36, "SOFT" 50;
  font-size: clamp(20px, 2vw, 24px);
  letter-spacing: -0.015em;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--s-4);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: var(--mono);
  color: var(--orange-burnt);
  font-size: 22px;
  flex-shrink: 0;
  transition: transform 200ms;
}
.faq-item[open] summary::after { content: "−"; transform: rotate(180deg); }
.faq-body {
  padding-top: var(--s-3);
  max-width: 64ch;
}
.faq-body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-2);
}

/* ============================================================
   ¶07 Closing CTA
   ============================================================ */
.closer-card {
  background: var(--ink);
  color: var(--bg);
  border-radius: 22px;
  padding: clamp(40px, 6vw, 80px) clamp(24px, 5vw, 64px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.closer-card::before,
.closer-card::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: var(--orange);
  filter: blur(60px);
  opacity: 0.35;
}
.closer-card::before { width: 320px; height: 320px; left: -120px; top: -120px; }
.closer-card::after { width: 240px; height: 240px; right: -80px; bottom: -80px; opacity: 0.2; }
.closer-title {
  font-family: var(--display);
  font-weight: 500;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  font-size: clamp(40px, 5.6vw, 72px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 0 0 var(--s-4);
  position: relative;
}
.closer-sub {
  max-width: 48ch;
  margin: 0 auto var(--s-6);
  font-size: clamp(16px, 1.4vw, 19px);
  color: color-mix(in oklab, var(--bg) 75%, transparent);
  line-height: 1.6;
  position: relative;
}
.closer-card .btn-primary {
  background: var(--orange);
  color: #fff;
  position: relative;
}
.closer-card .btn-primary:hover { background: #fff; color: var(--ink); }
.closer-mini {
  margin: var(--s-5) 0 0;
  font-size: 13px;
  color: color-mix(in oklab, var(--bg) 60%, transparent);
  position: relative;
}
.closer-mini a {
  border-bottom: 1px solid currentColor;
}
.closer-mini a:hover { color: var(--orange); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  margin-top: var(--s-9);
  padding: var(--s-8) var(--gutter-h) var(--s-6);
  background: var(--bg-2);
  border-top: 1px solid var(--rule);
  position: relative;
  z-index: 2;
}
.footer-grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--s-6);
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-tag {
  margin: 8px 0 0;
  max-width: 36ch;
  font-size: 14px;
  color: var(--ink-3);
  line-height: 1.55;
}
.footer-nav h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 var(--s-3);
  font-weight: 500;
}
.footer-nav { display: flex; flex-direction: column; gap: 8px; }
.footer-nav a {
  font-size: 14px;
  color: var(--ink);
  transition: color 120ms;
}
.footer-nav a:hover { color: var(--orange-burnt); }
.footer-bottom {
  max-width: var(--container);
  margin: var(--s-6) auto 0;
  padding-top: var(--s-4);
  border-top: 1px dashed var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  justify-content: space-between;
  font-size: 12px;
  color: var(--ink-3);
  font-family: var(--mono);
}
.footer-meta { max-width: 60ch; }

/* ============================================================
   Toast (Paddle stub fallback)
   ============================================================ */
.toast-host {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  pointer-events: none;
}
.toast {
  background: var(--ink);
  color: var(--bg);
  border-radius: 14px;
  padding: var(--s-4) var(--s-5);
  display: flex;
  align-items: center;
  gap: var(--s-3);
  box-shadow: 0 24px 48px -16px rgba(28, 17, 5, 0.4);
  font-size: 14px;
  pointer-events: auto;
  animation: toast-in 220ms cubic-bezier(.2,.9,.3,1);
  max-width: min(440px, 92vw);
}
.toast b { color: var(--orange); font-weight: 600; }
.toast a {
  border-bottom: 1px solid var(--orange);
  color: var(--orange);
  font-weight: 600;
  white-space: nowrap;
  margin-left: auto;
  flex-shrink: 0;
}
.toast a:hover { color: #fff; border-color: #fff; }
.toast.is-leaving { animation: toast-out 180ms ease forwards; }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateY(8px); }
}

/* ============================================================
   Legal pages (Privacy / Terms)
   Editorial article layout — narrow column, generous whitespace.
   ============================================================ */
.legal-main {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  padding: var(--s-8) var(--gutter-h) var(--s-9);
}
.legal-main h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 var(--s-3);
  font-variation-settings: "opsz" 96, "SOFT" 20;
}
.legal-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  margin: 0 0 var(--s-7);
  padding-bottom: var(--s-4);
  border-bottom: 1px solid var(--rule);
}
.legal-meta b { color: var(--ink-2); font-weight: 500; }
.legal-prose h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.25;
  color: var(--ink);
  margin: var(--s-7) 0 var(--s-3);
  letter-spacing: -0.01em;
  font-variation-settings: "opsz" 32;
}
.legal-prose h2 .num {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--orange-burnt);
  margin-right: 10px;
  vertical-align: 2px;
  letter-spacing: 0.04em;
}
.legal-prose p,
.legal-prose li {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 var(--s-3);
}
.legal-prose ul {
  padding-left: 22px;
  margin: 0 0 var(--s-4);
}
.legal-prose li { margin-bottom: 6px; }
.legal-prose strong { color: var(--ink); font-weight: 600; }
.legal-prose a {
  color: var(--ink);
  border-bottom: 1px solid var(--orange);
}
.legal-prose a:hover { color: var(--orange-burnt); }
.legal-prose code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--orange-lift);
  padding: 1px 6px;
  border-radius: 4px;
}
.legal-callout {
  margin: var(--s-5) 0;
  padding: var(--s-4) var(--s-5);
  background: var(--orange-lift);
  border-left: 3px solid var(--orange);
  border-radius: 0 8px 8px 0;
  font-size: 15px;
}
.legal-callout p:last-child { margin-bottom: 0; }
:lang(ja) .legal-prose, body[data-locale="ja"] .legal-prose,
:lang(zh) .legal-prose, body[data-locale="zh"] .legal-prose {
  line-height: 1.85;
}

/* ============================================================
   Hero entrance
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .hero-headline .line {
    opacity: 0;
    transform: translateY(8px);
    animation: lift 600ms cubic-bezier(.2,.9,.3,1) forwards;
  }
  .hero-headline .line:nth-child(1) { animation-delay: 80ms; }
  .hero-headline .line:nth-child(2) { animation-delay: 200ms; }
  .hero-sub { opacity: 0; animation: lift 600ms 380ms cubic-bezier(.2,.9,.3,1) forwards; }
  .hero-cta { opacity: 0; animation: lift 600ms 480ms cubic-bezier(.2,.9,.3,1) forwards; }
  /* .hero-fusion uses its own internal IntersectionObserver-driven animation; no figure-level lift */
}
@keyframes lift {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Print-friendly: hide hero animation if printing */
@media print {
  .topbar, .thread-line, .closer-card::before, .closer-card::after { display: none; }
  body { background: white; }
}