/* ==========================================================================
   Yavi Warmup — application stylesheet
   Shared by the landing page and the internal app pages. Plain CSS, no build.
   Sections: tokens, base, typography, layout, nav, buttons, cards, forms,
   tables, feedback (alerts/badges/stats/progress), app layout, footer,
   landing page, responsive, motion & print.
   ========================================================================== */

/* 1. Tokens ------------------------------------------------------------- */
:root {
  --ink: #13203a;
  --ink-soft: #4b5873;
  --ink-faint: #66738b;
  --paper: #ffffff;
  --paper-2: #f5f7fb;
  --paper-3: #e9edf4;
  --line: #dce2ec;
  --line-strong: #c3cbda;
  --navy: #13203a;
  --navy-deep: #0c1529;

  --ember: #c94a0b;          /* text and buttons: 4.7:1 on white */
  --ember-deep: #a63c07;
  --ember-bright: #ec5b0e;   /* graphics only */
  --ember-tint: #fdeee3;

  --inbox: #15794a;          /* text-safe "inbox" green */
  --inbox-bright: #22a566;   /* graphics */
  --inbox-tint: #e3f4ea;

  --spam: #b4413b;           /* muted "spam" red */
  --spam-tint: #f9e8e6;

  --amber: #8f5e10;
  --amber-tint: #fbf0d9;

  --font-display: "Bricolage Grotesque", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(19, 32, 58, 0.06);
  --shadow-md: 0 14px 36px -14px rgba(19, 32, 58, 0.24);
  --focus-ring: 0 0 0 3px rgba(201, 74, 11, 0.3);
  --nav-h: 64px;
  --container: 1100px;
}

/* 2. Base ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--nav-h) + 1rem);
}

body {
  margin: 0;
  font: 400 1rem/1.6 var(--font-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; }
svg { flex-shrink: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }

:focus-visible { outline: 2px solid var(--ember); outline-offset: 2px; }
[tabindex="-1"]:focus { outline: none; }

.skip-link {
  position: absolute; left: 1rem; top: -3rem; z-index: 100;
  padding: 0.5rem 0.75rem; border-radius: var(--r-sm);
  background: var(--navy); color: #fff; text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* 3. Typography ---------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0 0 0.6em;
  text-wrap: balance;
}
h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.0625rem; }
p  { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
small { font-size: 0.875em; }
strong { font-weight: 600; }

a { color: var(--ember); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: var(--ember-deep); }

.muted { color: var(--ink-soft); }
.text-center { text-align: center; }
.num { font-variant-numeric: tabular-nums; }

.eyebrow {
  display: block;
  font: 500 0.9375rem/1.3 var(--font-body);
  color: var(--ember);
  margin: 0 0 0.75rem;
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--paper-3);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}
pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.55;
  background: var(--navy-deep);
  color: #e6ebf5;
  padding: 1rem 1.25rem;
  border-radius: var(--r-md);
  overflow-x: auto;
  margin: 0 0 1.25rem;
}
pre code { background: none; padding: 0; color: inherit; font-size: inherit; }

/* 4. Layout -------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.section { padding: 6rem 0; }
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  max-width: 24ch;
}
.section-intro {
  font-size: 1.0625rem;
  color: var(--ink-soft);
  max-width: 58ch;
  margin: 0 0 3rem;
}

.grid   { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }
.grid-2 { display: grid; gap: 1.25rem; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { display: grid; gap: 1.25rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }

.flex    { display: flex; align-items: center; }
.between { justify-content: space-between; }
.wrap    { flex-wrap: wrap; }
.gap-1   { gap: 0.5rem; }
.gap-2   { gap: 1rem; }

.mt-1 { margin-top: 0.5rem; }  .mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }  .mt-4 { margin-top: 2.5rem; }
.mb-1 { margin-bottom: 0.5rem; }  .mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }  .mb-4 { margin-bottom: 2.5rem; }

/* 5. Nav ----------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  min-height: var(--nav-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font: 700 1.125rem/1 var(--font-display);
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { color: var(--ink); }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin-left: auto;
}
.nav-links a:not(.btn) {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
}
.nav-links a:not(.btn):hover,
.nav-links a:not(.btn)[aria-current="page"] { color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: 0.6rem; margin-left: 0.5rem; }
.nav-user { font-size: 0.875rem; color: var(--ink-soft); }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 42px; height: 42px;
  align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--paper);
  cursor: pointer;
}
.nav-toggle .icon-close { display: none; }
.nav.is-open .nav-toggle .icon-menu  { display: none; }
.nav.is-open .nav-toggle .icon-close { display: block; }

/* 6. Buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.2rem;
  font: 600 0.9375rem/1.2 var(--font-body);
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: var(--paper-3);
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { background: var(--line); color: var(--ink); }
.btn:focus-visible { box-shadow: var(--focus-ring); outline: none; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.55; pointer-events: none; }

.btn-primary { background: var(--ember); border-color: var(--ember); color: #fff; }
.btn-primary:hover { background: var(--ember-deep); border-color: var(--ember-deep); color: #fff; }

.btn-outline { background: transparent; border-color: var(--line-strong); color: var(--ink); }
.btn-outline:hover { background: var(--paper-2); border-color: var(--ink); }

.btn-danger { background: var(--spam); border-color: var(--spam); color: #fff; }
.btn-danger:hover { background: #963530; border-color: #963530; color: #fff; }

.btn-sm { padding: 0.5rem 0.85rem; font-size: 0.875rem; }
.btn-block { display: flex; width: 100%; }
.btn-lg { padding: 0.9rem 1.5rem; font-size: 1.0625rem; }

/* 7. Cards --------------------------------------------------------------- */
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.card-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 1rem;
}
.card > :last-child { margin-bottom: 0; }

.auth-card {
  max-width: 440px;
  margin: 3rem auto;
  padding: 2.25rem 2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
}
.auth-card h1 { font-size: 1.625rem; margin-bottom: 0.35rem; }
.auth-card .btn-block { margin-top: 0.5rem; }

.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-md);
  color: var(--ink-soft);
  background: var(--paper);
}
.empty-state h3 { color: var(--ink); margin-bottom: 0.35rem; }
.empty-state p { max-width: 42ch; margin: 0 auto 1.25rem; }

/* 8. Forms --------------------------------------------------------------- */
.form-group { margin-bottom: 1.25rem; }
.form-group label,
label.label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--ink);
}
.input {
  display: block;
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.9375rem;
  line-height: 1.4;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input::placeholder { color: var(--ink-faint); }
.input:hover { border-color: #a9b3c6; }
.input:focus { outline: none; border-color: var(--ember); box-shadow: var(--focus-ring); }
.input:disabled { background: var(--paper-2); color: var(--ink-faint); cursor: not-allowed; }
.input[aria-invalid="true"] { border-color: var(--spam); }
textarea.input { min-height: 7rem; resize: vertical; }
select.input {
  padding-right: 2.25rem;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%234b5873' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'><path d='M4 6l4 4 4-4'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
}
.input-group { display: flex; gap: 0.5rem; }
.input-group .input { flex: 1; }
.form-actions { flex-wrap: wrap; }
.form-actions .btn { max-width: 100%; min-height: 44px; white-space: normal; text-align: center; }
.help-text { display: block; margin-top: 0.4rem; font-size: 0.8125rem; color: var(--ink-faint); }
.field-error { display: block; margin-top: 0.4rem; font-size: 0.8125rem; color: var(--spam); }
.checkbox { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.9375rem; font-weight: 400; }
.checkbox input { margin-top: 0.3rem; accent-color: var(--ember); }

/* 9. Tables -------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--paper);
  -webkit-overflow-scrolling: touch;
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
}
.table th, .table td {
  padding: 0.8rem 1rem;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.table th {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: var(--paper-2);
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: #fafbfd; }
.table td.num, .table th.num { text-align: right; }
.table .actions { text-align: right; }

/* 10. Feedback: alerts, badges, stats, progress ------------------------- */
.alert {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--line);
  border-left-width: 4px;
  border-radius: var(--r-sm);
  background: var(--paper-2);
  font-size: 0.9375rem;
  margin: 0 0 1.25rem;
}
.alert > :last-child { margin-bottom: 0; }
.alert-success { background: var(--inbox-tint); border-color: #bfe3cf; border-left-color: var(--inbox); color: #0f5a37; }
.alert-error   { background: var(--spam-tint);  border-color: #efc9c5; border-left-color: var(--spam);  color: #82302b; }
.alert-info    { background: #e9f0fb; border-color: #c6d6ee; border-left-color: #2f5ea8; color: #1f3f70; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
  border-radius: 999px;
  white-space: nowrap;
  background: var(--paper-3);
  color: var(--ink-soft);
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-green { background: var(--inbox-tint); color: var(--inbox); }
.badge-amber { background: var(--amber-tint); color: var(--amber); }
.badge-red   { background: var(--spam-tint);  color: var(--spam); }
.badge-gray  { background: var(--paper-3);    color: var(--ink-soft); }

.stat {
  padding: 1.1rem 1.25rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.stat-label { display: block; margin-top: 0.3rem; font-size: 0.8125rem; color: var(--ink-soft); }
.stat-inbox .stat-value { color: var(--inbox); }
.stat-spam  .stat-value { color: var(--spam); }

.progress {
  height: 8px;
  background: var(--paper-3);
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--ember-bright);
  transition: width 0.4s ease;
}
.progress-bar-green { background: var(--inbox-bright); }
.progress-bar-amber { background: #d9962c; }
.progress-bar-red   { background: var(--spam); }

/* 11. App layout --------------------------------------------------------- */
.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper-2);
}
.app-shell .nav { background: rgba(255, 255, 255, 0.96); }
.app-main { flex: 1; padding: 2rem 0 4rem; }

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 0 0 1.75rem;
}
.page-header h1 { font-size: 1.75rem; margin: 0; }
.page-header p  { margin: 0.25rem 0 0; color: var(--ink-soft); }
.page-header .actions { display: flex; gap: 0.6rem; flex-wrap: wrap; }

/* 12. Footer ------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0;
  font-size: 0.875rem;
  color: var(--ink-soft);
  background: var(--paper);
}
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer-links { display: flex; gap: 1.5rem; margin: 0; padding: 0; list-style: none; }
.footer-links a { color: var(--ink-soft); text-decoration: none; }
.footer-links a:hover { color: var(--ink); text-decoration: underline; }

/* 13. Landing page ------------------------------------------------------- */
.hero { padding: 4.5rem 0 4rem; }
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 4rem;
  align-items: center;
}
.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.028em;
  margin: 0 0 1.25rem;
}
.lead {
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 1.75rem;
}
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; }
.hero-actions .link { font-weight: 500; color: var(--ink); padding: 0.5rem 0.25rem; }
.hero-note { margin: 0.85rem 0 0; font-size: 0.875rem; color: var(--ink-faint); }

.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 2.25rem 0 0; padding: 0; list-style: none; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.8rem 0.42rem 0.6rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink);
}
.chip svg { color: var(--inbox); }

/* Hero illustration */
.hero-art { min-width: 0; }
.art-frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, #fff 0%, var(--paper-2) 100%);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.art-frame svg { display: block; width: 100%; height: auto; }
.art-grid  { stroke: var(--line); stroke-width: 1; }
.art-fill  { fill: url(#hs-fill); }
.art-line  { fill: none; stroke: var(--ember-bright); stroke-width: 3; stroke-linecap: round; }
.art-next  { fill: none; stroke: var(--ember-bright); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 2 9; opacity: 0.7; }
.art-label { font: 500 12px/1 var(--font-body); fill: var(--ink-faint); }
.art-axis  { font: 500 12px/1 var(--font-body); fill: var(--ink-faint); }
.art-score-label { font: 500 13px/1 var(--font-body); fill: var(--ink-soft); }
.art-score { font: 700 44px/1 var(--font-display); fill: var(--inbox); letter-spacing: -0.03em; }
.art-tray-spam  .art-tray-box  { fill: var(--spam-tint);  stroke: var(--spam); }
.art-tray-spam  .art-tray-icon { stroke: var(--spam); }
.art-tray-spam  .art-tray-text { fill: var(--spam); }
.art-tray-inbox .art-tray-box  { fill: var(--inbox-tint); stroke: var(--inbox); }
.art-tray-inbox .art-tray-icon { stroke: var(--inbox); }
.art-tray-inbox .art-tray-text { fill: var(--inbox); }
.art-tray-box  { stroke-width: 1.25; }
.art-tray-icon { fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.art-tray-text { font: 600 15px/1 var(--font-display); }
.art-env-body { fill: #fff; stroke: var(--ink); stroke-width: 1.75; }
.art-env-flap { fill: none; stroke: var(--ember-bright); stroke-width: 1.75; stroke-linejoin: round; }
.art-dot { fill: var(--paper); stroke: var(--ember-bright); stroke-width: 3; }

@media (prefers-reduced-motion: no-preference) {
  .art-line { stroke-dasharray: 1; stroke-dashoffset: 1; animation: art-draw 1.1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards; }
  .art-fill { opacity: 0; animation: art-fade 0.6s ease 0.9s forwards; }
  .art-env, .art-next { opacity: 0; animation: art-rise 0.6s ease 1.05s forwards; }
  .art-next { animation-name: art-fade; }
  .art-score-group { opacity: 0; animation: art-fade 0.5s ease 1.4s forwards; }
}
@keyframes art-draw { to { stroke-dashoffset: 0; } }
@keyframes art-fade { to { opacity: 1; } }
@keyframes art-rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Problem */
.problem { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.problem-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 4rem; align-items: start; }
.problem p { max-width: 52ch; color: var(--ink-soft); font-size: 1.0625rem; }
.problem p strong { color: var(--ink); }
.signal-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.signal {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.1rem 1.25rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.signal-mark {
  display: grid; place-items: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--spam-tint);
  color: var(--spam);
}
.signal.is-fix .signal-mark { background: var(--inbox-tint); color: var(--inbox); }
.signal h3 { font-size: 1.0625rem; margin: 0.35rem 0 0.25rem; }
.signal p { margin: 0; font-size: 0.9375rem; color: var(--ink-soft); }

/* How it works */
.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.steps::before {
  content: "";
  position: absolute;
  top: 18px; left: 18px; right: 18px;
  height: 1px;
  background: var(--line-strong);
}
.step { position: relative; }
.step-num {
  position: relative;
  display: grid; place-items: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--ember);
  color: #fff;
  font: 700 1rem/1 var(--font-display);
  margin-bottom: 1.25rem;
  box-shadow: 0 0 0 6px var(--paper);
}
.step h3 { font-size: 1.125rem; margin-bottom: 0.4rem; }
.step p { margin: 0; font-size: 0.9375rem; color: var(--ink-soft); }

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.feature { background: var(--paper); padding: 2rem 1.75rem; }
.feature-icon {
  display: grid; place-items: center;
  width: 40px; height: 40px;
  border-radius: var(--r-sm);
  background: var(--ember-tint);
  color: var(--ember);
  margin-bottom: 1.25rem;
}
.feature h3 { font-size: 1.125rem; margin-bottom: 0.45rem; }
.feature p { margin: 0; font-size: 0.9375rem; color: var(--ink-soft); }

/* Pricing */
.pricing { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pricing-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 430px); gap: 4rem; align-items: center; }
.pricing-copy p { max-width: 50ch; color: var(--ink-soft); font-size: 1.0625rem; }
.pricing-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-md);
}
.price-free {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin: 0 0 0.35rem;
}
.price-free small { display: block; margin-top: 0.4rem; font: 400 0.9375rem/1.4 var(--font-body); color: var(--ink-soft); }
.price-then { display: flex; align-items: baseline; gap: 0.5rem; padding: 1.25rem 0; margin: 1.25rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.price-amount { font: 700 2.5rem/1 var(--font-display); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.price-unit { font-size: 0.9375rem; color: var(--ink-soft); line-height: 1.3; }
.check-list { list-style: none; margin: 0 0 1.5rem; padding: 0; display: grid; gap: 0.6rem; font-size: 0.9375rem; }
.check-list li { display: flex; gap: 0.6rem; align-items: flex-start; }
.check-list svg { color: var(--inbox); margin-top: 0.2rem; }
.price-note { margin: 0.85rem 0 0; font-size: 0.8125rem; color: var(--ink-faint); text-align: center; }

/* FAQ */
.faq { max-width: 760px; margin-top: 2.5rem; }
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: 100%;
  padding: 1.2rem 0;
  margin: 0;
  background: none;
  border: 0;
  text-align: left;
  font: 600 1.0625rem/1.4 var(--font-display);
  color: var(--ink);
  cursor: pointer;
}
.faq-q:hover { color: var(--ember); }
.faq-q:focus-visible { outline-offset: 4px; }
.faq-q svg { color: var(--ink-faint); transition: transform 0.2s ease; }
.faq-q[aria-expanded="true"] svg { transform: rotate(45deg); color: var(--ember); }
.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  visibility: hidden;
  transition: grid-template-rows 0.25s ease, visibility 0s linear 0.25s;
}
.faq-a.is-open { grid-template-rows: 1fr; visibility: visible; transition-delay: 0s, 0s; }
.faq-a > div { overflow: hidden; }
.faq-a p { margin: 0 0 1.4rem; color: var(--ink-soft); max-width: 64ch; }

/* Final CTA band */
.cta-band { background: var(--navy); color: #fff; padding: 5rem 0; }
.cta-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 2.5rem; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: clamp(1.75rem, 3vw, 2.5rem); letter-spacing: -0.02em; margin: 0 0 0.5rem; max-width: 20ch; }
.cta-band p { color: rgba(255, 255, 255, 0.72); margin: 0; max-width: 46ch; }
.cta-band .btn-primary:focus-visible { outline-color: #fff; }

/* 14. Responsive --------------------------------------------------------- */
@media (max-width: 1024px) {
  .section { padding: 4.5rem 0; }
  .hero-inner, .problem-grid, .pricing-grid { gap: 2.5rem; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps::before { display: none; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 0.25rem 1.25rem 1.25rem;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
  }
  .nav.is-open .nav-links { display: flex; }
  .nav-links a:not(.btn) { padding: 0.9rem 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .nav-actions { flex-direction: column; align-items: stretch; margin: 1rem 0 0; }
  .nav-actions .btn { width: 100%; }
  .nav-user { padding: 0.5rem 0; }

  .hero { padding: 3rem 0; }
  .hero-inner, .problem-grid, .pricing-grid { grid-template-columns: minmax(0, 1fr); }
  .pricing-grid { align-items: stretch; }
  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 600px) {
  .section { padding: 3.5rem 0; }
  .section-intro { margin-bottom: 2rem; }
  .hero-title { font-size: 2.35rem; }
  .lead { font-size: 1.0625rem; }
  .hero-actions .btn { width: 100%; }
  .steps { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .steps::before { display: block; top: 0; bottom: 0; left: 18px; right: auto; width: 1px; height: auto; }
  .step { display: grid; grid-template-columns: 36px 1fr; gap: 1rem; }
  .step-num { margin: 0; }
  .feature-grid { grid-template-columns: minmax(0, 1fr); }
  .feature { padding: 1.5rem 1.25rem; }
  .pricing-card { padding: 1.75rem 1.25rem; }
  .cta-band { padding: 3.5rem 0; }
  .cta-band .btn { width: 100%; }
  .page-header { align-items: flex-start; }
  .auth-card { margin: 1.5rem auto; padding: 1.75rem 1.25rem; }
  .table th, .table td { padding: 0.7rem 0.8rem; }
}

/* 15. Motion & print ----------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

@media print {
  .nav, .nav-toggle, .cta-band, .skip-link { display: none !important; }
  body { color: #000; }
  .faq-a { grid-template-rows: 1fr; visibility: visible; }
}