/* =========================================================================
   Mathema Education — styles.css
   "Worked by hand": warm paper, disciplined type, ink annotations.
   ========================================================================= */

/* ---------- 1. Tokens ---------------------------------------------------- */
:root {
  color-scheme: light;

  /* ---- Primitives : brand -------------------------------------------------
     navy / teal / sage are sampled from the logo and are fixed. ochre is the
     warm counter-note (from the paper's warmth) — used only for hand-drawn
     marks, the numbered sequences, and small highlights, never for body. */
  --navy-900:  #01153A;   /* logo navy */
  --navy-800:  #0A2348;
  --teal-700:  #003C50;
  --teal-600:  #004B62;   /* logo teal */
  --teal-500:  #0B637C;
  --sage-500:  #9DB25F;
  --sage-400:  #BBC883;   /* logo sage */
  --sage-200:  #DCE5C2;
  --sage-100:  #EAEFDB;
  --ochre-600: #9E5318;   /* 5.4:1 on paper, 5:1 on cream — text-safe */
  --ochre-500: #C2792B;
  --ochre-100: #F1E6D2;

  /* ---- Primitives : neutrals ------------------------------------------- */
  --paper:     #FBFAF6;   /* page */
  --cream:     #F3F0E5;   /* warm alternating surface */
  --white:     #FFFFFF;
  --slate-700: #223047;   /* body text  — 12.5:1 on paper */
  --slate-500: #515C6E;   /* muted text — 6.5:1 on paper */
  --stone-300: #E4E1D4;   /* hairline */
  --stone-200: #EDEBDF;   /* faint hairline */

  /* ---- Semantic ------------------------------------------------------- */
  --color-bg:                 var(--paper);
  --color-surface:            var(--white);
  --color-surface-alt:        var(--cream);      /* .section--alt  */
  --color-surface-sage:       var(--sage-100);   /* .section--sage */
  --color-surface-navy:       var(--navy-900);

  --color-heading:            var(--navy-900);
  --color-text:               var(--slate-700);
  --color-text-muted:         var(--slate-500);
  --color-text-on-navy:       #D3DCEA;
  --color-text-muted-on-navy: #A6B2C4;

  --color-link:               var(--teal-600);
  --color-link-hover:         var(--teal-700);
  --color-accent:             var(--teal-600);   /* primary buttons */
  --color-accent-hover:       var(--teal-700);
  --color-mark:               var(--ochre-600);  /* hand-drawn marks: annotations, numbered steps, active-nav underline */
  --color-label:              var(--ochre-600);  /* editorial labels: eyebrows, credential figures, table + testimonial labels */
  --color-diamond:            var(--sage-400);   /* logo diamond marker */
  --color-focus:              var(--teal-600);

  --color-border:             var(--stone-300);
  --color-border-soft:        var(--stone-200);
  --color-border-strong:      #6F7889;           /* controls — 4.4:1 on white, WCAG 1.4.11 */
  --color-border-on-navy:      rgba(255, 255, 255, 0.16);   /* hairline on navy */
  --color-control-on-navy:     rgba(255, 255, 255, 0.42);   /* control outline on navy — 3:1 */
  --color-danger:             #A5371F;           /* invalid border / error text — 6:1 on paper */

  --grid-line:   rgba(1, 21, 58, 0.045);
  --placeholder: #6B7280;   /* 4.8:1 on white */

  /* ---- Compatibility aliases (legacy names → semantic tokens) --------- */
  --navy:        var(--navy-900);
  --teal:        var(--teal-600);
  --teal-deep:   var(--teal-700);
  --sage:        var(--sage-400);
  --sage-deep:   var(--sage-500);
  --paper-2:     var(--cream);
  --sage-wash:   var(--sage-100);
  --teal-wash:   var(--sage-200);
  --ink:         var(--navy-900);
  --ink-body:    var(--slate-700);
  --ink-soft:    var(--slate-500);
  --rule:        var(--color-border);
  --rule-soft:   var(--color-border-soft);
  --field-border: var(--color-border-strong);

  /* type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:    "Space Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --step--1: clamp(0.82rem, 0.79rem + 0.14vw, 0.9rem);
  --step-0:  clamp(1rem, 0.96rem + 0.2vw, 1.12rem);
  --step-1:  clamp(1.2rem, 1.12rem + 0.4vw, 1.45rem);
  --step-2:  clamp(1.45rem, 1.32rem + 0.66vw, 1.9rem);
  --step-3:  clamp(1.8rem, 1.55rem + 1.2vw, 2.6rem);
  --step-4:  clamp(2.2rem, 1.75rem + 2.2vw, 3.6rem);
  --step-5:  clamp(2.6rem, 1.9rem + 3.4vw, 4.6rem);

  /* space */
  --sp-1: 0.5rem;
  --sp-2: 0.875rem;
  --sp-3: 1.25rem;
  --sp-4: 2rem;
  --sp-5: 3rem;
  --sp-6: 4rem;
  --sp-7: 5.5rem;

  --shell:  min(92vw, 1140px);
  --measure: 64ch;
  --radius: 8px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(1, 21, 58, 0.06), 0 2px 8px rgba(1, 21, 58, 0.05);
  --shadow-md: 0 6px 18px rgba(1, 21, 58, 0.09), 0 2px 6px rgba(1, 21, 58, 0.06);
  --shadow-lg: 0 18px 44px rgba(1, 21, 58, 0.14);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur:  0.42s;
}

/* ---------- 2. Reset / base ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 92px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
[id] { scroll-margin-top: 92px; }

a, button, summary, label, input, select, textarea, .btn, .chip {
  -webkit-tap-highlight-color: rgba(0, 75, 98, 0.18);
}
a, button, summary, .btn, .chip, .nav-toggle, .tslider__nav button {
  touch-action: manipulation;
}

body {
  background: var(--paper);
  color: var(--ink-body);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  font-feature-settings: "ss01", "cv05";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* clip, not hidden: contains stray horizontal overflow without turning
     <body> into a scroll container (which would break the sticky header) */
  overflow-x: clip;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: var(--teal); text-underline-offset: 0.18em; text-decoration-thickness: 1.5px; }
a:hover { color: var(--teal-deep); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.08;
  font-weight: 560;
  font-optical-sizing: auto;
  letter-spacing: -0.012em;
  text-wrap: balance;
}
h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); font-weight: 600; letter-spacing: 0; }

p { text-wrap: pretty; }
strong { color: var(--ink); font-weight: 600; }

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 3px;
  border-radius: 3px;
}

::selection { background: var(--sage); color: var(--navy); }

.skip-link {
  position: absolute; left: var(--sp-3); top: var(--sp-3);
  background: var(--navy); color: var(--white);
  padding: 0.6rem 1rem; border-radius: var(--radius);
  transform: translateY(-160%); transition: transform 0.2s var(--ease);
  z-index: 100;
}
.skip-link:focus { transform: none; color: var(--white); }

/* ---------- 3. Layout helpers ------------------------------------------- */
.shell { width: var(--shell); margin-inline: auto; }
.section { padding-block: var(--sp-7); }
.section--tight { padding-block: var(--sp-6); }
.section--alt { background: var(--paper-2); }
.section--sage { background: var(--sage-wash); }
.section--navy { background: var(--color-surface-navy); color: var(--color-text-on-navy); }
.section--navy h2, .section--navy h3 { color: var(--white); }

.section__head { max-width: 40rem; margin-bottom: var(--sp-5); }
.section__head p { margin-top: var(--sp-2); color: var(--ink-soft); font-size: var(--step-1); }
.section--navy .section__head p { color: var(--color-text-muted-on-navy); }

.prose { max-width: var(--measure); }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 1.8em; }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: 0.4em; }

.grid { display: grid; gap: var(--sp-4); }
.grid > *, .steps > *, .split > * { min-width: 0; }
@media (min-width: 640px) { .grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- 4. Eyebrow / labels --------------------------------------- */
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-label);
  margin-bottom: var(--sp-3);
}
.eyebrow::before {
  content: ""; display: inline-block;
  width: 0.5rem; height: 0.5rem;
  margin-right: 0.6rem;
  background: var(--color-label);
  transform: rotate(45deg);
}
.section--navy .eyebrow { color: var(--sage); }
.section--navy .eyebrow::before { background: var(--sage); }

/* ---------- 5. Buttons ------------------------------------------------- */
.btn {
  --btn-bg: var(--teal);
  --btn-fg: var(--white);
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--step-0);
  line-height: 1;
  padding: 0.95rem 1.5rem;
  min-height: 44px;
  border: 1.5px solid transparent;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
  box-shadow: 0 2px 4px rgba(1, 21, 58, 0.10), 0 5px 14px rgba(0, 75, 98, 0.15);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); color: var(--btn-fg); background: var(--teal-deep); }
.btn:active { transform: scale(0.975); transition-duration: 0.1s; }
.btn .btn__arrow { transition: transform 0.18s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* secondary: a defined white pill with a bold navy ring, not a faint outline */
.btn--ghost {
  --btn-bg: var(--white);
  --btn-fg: var(--navy);
  border-color: var(--navy);
  border-width: 2px;
  box-shadow: var(--shadow-sm);
}
.btn--ghost:hover { background: var(--teal); border-color: var(--teal); color: #fff; box-shadow: var(--shadow-md); transform: translateY(-2px); }
/* ghost button on a navy section: transparent with a brighter ring */
.section--navy .btn--ghost { --btn-bg: transparent; border-color: rgba(255, 255, 255, 0.55); color: #fff; box-shadow: none; }
.section--navy .btn--ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; color: #fff; box-shadow: none; }

.btn--light {
  --btn-bg: var(--sage);
  --btn-fg: var(--navy);
}
.btn--light:hover { background: var(--sage-200); color: var(--navy); }

.btn--block { width: 100%; justify-content: center; }

/* ---------- 6. Header ------------------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  border-bottom: 1px solid transparent;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
@supports (backdrop-filter: blur(10px)) {
  .site-header__inner { backdrop-filter: saturate(1.4) blur(10px); }
}
.site-header.is-stuck {
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom-color: var(--rule-soft);
  box-shadow: 0 6px 20px rgba(1, 21, 58, 0.06);
}
.site-header__inner {
  width: var(--shell); margin-inline: auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-3);
  min-height: 74px;
}

.brand { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; color: var(--navy); }
.brand:hover { color: var(--navy); }
.brand__mark { width: 34px; height: 31px; flex: none; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.28rem;
  letter-spacing: -0.01em;
  line-height: 1;
}
.brand__name span { color: var(--teal); }

.primary-nav { display: none; }
.primary-nav ul { list-style: none; display: flex; gap: 0.35rem; padding: 0; }
.primary-nav a {
  display: inline-block;
  padding: 0.55rem 0.8rem;
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--ink-body);
  text-decoration: none;
  border-radius: var(--radius);
  position: relative;
}
.primary-nav a::after {
  content: ""; position: absolute; left: 0.8rem; right: 0.8rem; bottom: 0.28rem;
  height: 2px; background: var(--color-mark); border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.18s var(--ease);
}
.primary-nav a:hover { color: var(--navy); }
@media (hover: hover) and (pointer: fine) {
  .primary-nav a:hover::after { transform: scaleX(1); }
}
.primary-nav a[aria-current="page"] { color: var(--navy); }
.primary-nav a[aria-current="page"]::after { transform: scaleX(1); }

.header__actions { display: flex; align-items: center; gap: var(--sp-2); }
.header__cta { display: none; }

.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  background: transparent; border: 1px solid var(--field-border); border-radius: var(--radius);
  cursor: pointer; color: var(--navy);
}
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* mobile drawer */
.mobile-nav {
  position: fixed; inset: 74px 0 0 0; z-index: 45;
  background: var(--paper);
  padding: var(--sp-4) var(--sp-3);
  padding-bottom: calc(var(--sp-6) + env(safe-area-inset-bottom));
  transform: translateY(-8px);
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.mobile-nav.is-open { opacity: 1; visibility: visible; transform: none; }
.mobile-nav ul { list-style: none; padding: 0; }
.mobile-nav li { border-bottom: 1px solid var(--rule-soft); }
.mobile-nav a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1rem 0.25rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--navy); text-decoration: none;
}
.mobile-nav a[aria-current="page"] { color: var(--color-mark); }
.mobile-nav .btn { margin-top: var(--sp-4); }

/* drawer contents settle in with a short stagger (JS-driven only) */
.js .mobile-nav li, .js .mobile-nav > .btn {
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}
.js .mobile-nav.is-open li, .js .mobile-nav.is-open > .btn { opacity: 1; transform: none; }
.js .mobile-nav.is-open li:nth-child(2) { transition-delay: 0.03s; }
.js .mobile-nav.is-open li:nth-child(3) { transition-delay: 0.06s; }
.js .mobile-nav.is-open li:nth-child(4) { transition-delay: 0.09s; }
.js .mobile-nav.is-open li:nth-child(5) { transition-delay: 0.12s; }
.js .mobile-nav.is-open li:nth-child(6) { transition-delay: 0.15s; }
.js .mobile-nav.is-open > .btn { transition-delay: 0.18s; }

/* no-JS fallback: the drawer becomes a static, always-visible nav list */
html:not(.js) .nav-toggle { display: none; }
html:not(.js) .site-header { position: static; }
html:not(.js) .mobile-nav {
  position: static; inset: auto;
  opacity: 1; visibility: visible; transform: none;
  padding: var(--sp-3) 0 0;
}

@media (min-width: 960px) {
  .primary-nav { display: block; }
  .header__cta { display: inline-flex; }
  .nav-toggle, .mobile-nav { display: none; }
}

/* ---------- 7. Ink annotations & dividers --------------------------- */
.ink-divider { width: 100%; height: 18px; color: var(--rule); }
.ink-divider path { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

.annotate { position: relative; white-space: nowrap; }
.annotate > svg {
  position: absolute; left: -3%; width: 106%; bottom: -0.18em;
  height: 0.42em; color: var(--color-mark); overflow: visible; pointer-events: none;
}
.annotate--circle > svg { bottom: -0.05em; height: 1.5em; left: -10%; width: 120%; color: var(--color-mark); }
.annotate > svg path {
  fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: var(--len, 400); stroke-dashoffset: var(--len, 400);
}
.annotate--circle > svg path { stroke-width: 2; }
.annotate.is-visible > svg path { animation: draw 0.7s var(--ease) forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .annotate > svg path { stroke-dashoffset: 0; animation: none; }
}

/* diamond bullet list */
.diamond-list { list-style: none; padding: 0; }
.diamond-list li { position: relative; padding-left: 1.7rem; }
.diamond-list li + li { margin-top: 0.7rem; }
.diamond-list li::before {
  content: ""; position: absolute; left: 0; top: 0.55em;
  width: 0.5rem; height: 0.5rem; background: var(--sage-deep);
  transform: rotate(45deg);
}

/* ---------- 8. Hero ------------------------------------------------- */
.hero { position: relative; padding-block: var(--sp-6) var(--sp-7); overflow: hidden; }
.hero__grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 30px 30px;
  -webkit-mask-image: radial-gradient(120% 90% at 70% 10%, #000 40%, transparent 78%);
          mask-image: radial-gradient(120% 90% at 70% 10%, #000 40%, transparent 78%);
}
.hero__inner { position: relative; z-index: 1; display: grid; gap: var(--sp-5); align-items: center; }
.hero__inner > * { min-width: 0; }
.hero__title { margin-block: var(--sp-2) var(--sp-3); }
.hero__lede { font-size: var(--step-1); color: var(--ink-soft); max-width: 34rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-top: var(--sp-4); }
.hero__figure { position: relative; }
.hero__figure img { width: 100%; }
@media (min-width: 920px) {
  .hero__inner { grid-template-columns: 1.05fr 0.95fr; gap: var(--sp-6); }
}

/* ---------- 9. Trust strip ---------------------------------------- */
.trust-strip {
  border-block: 1px solid var(--rule-soft);
  background: var(--white);
}
.trust-strip ul {
  width: var(--shell); margin-inline: auto; list-style: none; padding: var(--sp-3) 0;
  text-align: center; line-height: 2.2;
  font-size: 0.95rem;
}
.trust-strip li { display: inline; color: var(--ink-body); }
.trust-strip li + li::before {
  content: ""; display: inline-block;
  width: 0.4rem; height: 0.4rem; margin: 0 1rem; vertical-align: middle;
  background: var(--sage); transform: rotate(45deg);
}
.trust-strip strong { font-family: var(--font-mono); color: var(--color-label); font-weight: 700; }

/* ---------- 10. Cards -------------------------------------------- */
.card {
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.card--hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card__icon {
  box-sizing: border-box;
  width: 46px; height: 46px; padding: 9px;
  color: var(--teal); background: var(--sage-wash);
  border-radius: 12px; margin-bottom: var(--sp-3);
}
.card h3 { font-size: var(--step-1); font-weight: 600; font-family: var(--font-display); }
.card p { margin-top: var(--sp-1); color: var(--ink-soft); font-size: 0.98rem; }

/* level / curricula table */
.levels { border-top: 2px solid var(--navy); }
.levels__row {
  display: grid; gap: 0.3rem var(--sp-4); padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--rule);
}
.levels__row dt {
  font-family: var(--font-mono); font-size: var(--step--1);
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-label);
  padding-top: 0.2rem;
}
.levels__row dd { color: var(--ink-body); }
@media (min-width: 720px) { .levels__row { grid-template-columns: 12rem 1fr; } }

/* ---------- 11. Steps (real sequence) -------------------------- */
.steps { counter-reset: step; display: grid; gap: var(--sp-4); }
@media (min-width: 860px) { .steps { grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); } }
.step { position: relative; padding-top: var(--sp-4); border-top: 2px solid var(--navy); }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono); font-size: 0.9rem; font-weight: 700;
  color: var(--color-mark);
  position: absolute; top: -1.15rem; left: 0;
  background: var(--paper); padding-right: 0.6rem;
}
.section--alt .step::before { background: var(--paper-2); }
.step h3 { font-size: var(--step-1); font-family: var(--font-display); font-weight: 600; margin-bottom: var(--sp-1); }
.step p { color: var(--ink-soft); font-size: 0.98rem; }

/* vertical numbered process */
.steps-full { list-style: none; counter-reset: s; max-width: 46rem; padding: 0; }
.steps-full li { position: relative; padding-left: 2.7rem; padding-bottom: var(--sp-5); }
.steps-full li::before {
  counter-increment: s; content: counter(s, decimal-leading-zero);
  position: absolute; left: 0; top: 0.15rem;
  font-family: var(--font-mono); font-weight: 700; font-size: 0.9rem; color: var(--color-mark);
}
.steps-full li::after {
  content: ""; position: absolute; left: 0.62rem; top: 1.7rem; bottom: 0.2rem; width: 2px;
  background: var(--rule);
}
.steps-full li:last-child { padding-bottom: 0; }
.steps-full li:last-child::after { display: none; }
.steps-full h3 { font-family: var(--font-display); font-size: var(--step-1); font-weight: 600; margin-bottom: var(--sp-1); }
.steps-full p { color: var(--ink-soft); max-width: var(--measure); }

/* ---------- 12. Testimonials --------------------------------- */
.tcard {
  background: var(--white); border: 1px solid var(--rule); border-radius: var(--radius-lg);
  padding: var(--sp-4); display: flex; flex-direction: column; gap: var(--sp-3);
  break-inside: avoid;
}
.tcard__quote { font-size: 1.02rem; color: var(--ink-body); }
.tcard__quote::before { content: "\201C"; font-family: var(--font-display); color: var(--color-mark); font-size: 2rem; line-height: 0; vertical-align: -0.35em; margin-right: 0.1em; }
.tcard__meta { display: flex; flex-direction: column; gap: 0.15rem; border-top: 1px solid var(--rule-soft); padding-top: var(--sp-2); }
.tcard__name { font-family: var(--font-display); font-weight: 600; color: var(--navy); }
.tcard__level { font-family: var(--font-mono); font-size: var(--step--1); color: var(--color-label); }

.tcolumns { display: grid; gap: var(--sp-4); align-items: start; transition: opacity 0.15s var(--ease); }
@media (min-width: 720px) { .tcolumns { grid-template-columns: 1fr 1fr; } }
.tcolumns > * { min-width: 0; }
.tcolumns.is-swapping { opacity: 0; }

/* filter chips */
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: var(--sp-5); }
.chip {
  font-family: var(--font-mono); font-size: var(--step--1);
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 0.5rem 0.9rem; min-height: 44px;
  border: 1px solid var(--field-border); border-radius: 999px;
  background: var(--white); color: var(--ink-body); cursor: pointer;
  transition: background 0.15s var(--ease), color 0.15s var(--ease), border-color 0.15s var(--ease), transform 0.14s var(--ease);
}
.chip:hover { border-color: var(--navy); }
.chip:active { transform: scale(0.97); }
.chip[aria-pressed="true"] { background: var(--navy); color: var(--white); border-color: var(--navy); }
.filter-empty { margin-bottom: var(--sp-5); color: var(--ink-soft); display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }

/* featured slider */
.tslider { position: relative; }
.tslider__track { display: flex; gap: var(--sp-4); overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding: var(--sp-3); -webkit-overflow-scrolling: touch; padding-bottom: var(--sp-2); }
.tslider__track > * { scroll-snap-align: start; flex: 0 0 min(88%, 30rem); align-self: flex-start; }
.tslider__track::-webkit-scrollbar { height: 6px; }
.tslider__track::-webkit-scrollbar-thumb { background: var(--rule); border-radius: 6px; }
.tslider__nav { display: flex; gap: 0.5rem; margin-top: var(--sp-3); }
.tslider__nav button {
  width: 44px; height: 44px; border-radius: 999px;
  border: 1px solid var(--field-border); background: var(--white); color: var(--navy);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
}
.tslider__nav button:hover { background: var(--sage-wash); }

/* ---------- 13. FAQ ------------------------------------------ */
.faq { border-top: 2px solid var(--navy); max-width: 48rem; }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3);
  padding: var(--sp-3) 0; cursor: pointer; list-style: none;
  font-family: var(--font-display); font-size: var(--step-1); font-weight: 560; color: var(--navy);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 0.9rem; height: 0.9rem;
  background: var(--teal);
  -webkit-mask: no-repeat center / contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2v12M2 8h12' stroke='%23000' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
          mask: no-repeat center / contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2v12M2 8h12' stroke='%23000' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  transition: transform 0.2s var(--ease);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > *:not(summary) { padding-bottom: var(--sp-3); color: var(--ink-soft); max-width: var(--measure); }
.faq details::details-content {
  opacity: 0; transform: translateY(-4px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease), content-visibility 0.24s allow-discrete;
}
.faq details[open]::details-content { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .faq details::details-content { transition: none; opacity: 1; transform: none; }
}

/* ---------- 14. Forms -------------------------------------- */
.form { display: grid; gap: var(--sp-3); max-width: 34rem; }
.form > .btn { justify-self: start; }
.field { display: grid; gap: 0.4rem; }
.field label { font-weight: 600; color: var(--navy); font-size: 0.95rem; }
.field .hint { font-size: 0.85rem; color: var(--ink-soft); font-weight: 400; }
.field input, .field select, .field textarea {
  font: inherit; font-size: 1rem;
  padding: 0.8rem 0.9rem;
  background: var(--white);
  border: 1.5px solid var(--field-border);
  border-radius: var(--radius);
  color: var(--ink-body);
  width: 100%;
}
.field ::placeholder { color: var(--placeholder); opacity: 1; }
.field textarea { min-height: 8rem; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); outline-offset: 1px; }
.field input[aria-invalid="true"], .field select[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color: var(--color-danger); }
.field .error { color: var(--color-danger); font-size: 0.85rem; min-height: 1.1em; }
.field--check { grid-auto-flow: column; grid-template-columns: auto 1fr; align-items: start; gap: 0.35rem 0.6rem; }
.field--check input { width: 1.15rem; height: 1.15rem; margin-top: 0.2rem; }
.field--check label { font-weight: 400; color: var(--ink-body); }
.field--check .error { grid-column: 1 / -1; min-height: 0; }
.form__note { font-family: var(--font-mono); font-size: var(--step--1); color: var(--ink-soft); }
.form__status { font-weight: 600; }
.form__status[data-state="ok"] { color: var(--teal); }
.form__status[data-state="err"] { color: var(--color-danger); }
.form__status[data-state="pending"] { color: var(--ink-soft); }

/* ---------- 15. Footer ----------------------------------- */
.site-footer { background: var(--color-surface-navy); color: var(--color-text-muted-on-navy); padding-block: var(--sp-6) var(--sp-4); }
.site-footer a { color: var(--color-text-on-navy); text-decoration: none; overflow-wrap: break-word; }
.site-footer a:hover { color: var(--white); text-decoration: underline; }
.footer__top { display: grid; gap: var(--sp-5); }
.footer__brand .brand__name { color: var(--white); }
.footer__brand .brand__name span { color: var(--sage); }
.footer__brand p { margin-top: var(--sp-2); max-width: 26rem; font-size: 0.95rem; }
.footer__cols { display: grid; gap: var(--sp-4); }
.footer__cols h4 { color: var(--white); font-family: var(--font-mono); font-size: var(--step--1); text-transform: uppercase; letter-spacing: 0.12em; font-weight: 400; margin-bottom: var(--sp-2); }
.footer__cols ul { list-style: none; padding: 0; display: grid; gap: 0.5rem; font-size: 0.95rem; }
.footer__bottom {
  margin-top: var(--sp-5); padding-top: var(--sp-3);
  border-top: 1px solid var(--color-border-on-navy);
  display: flex; flex-wrap: wrap; gap: var(--sp-2) var(--sp-4); justify-content: space-between;
  font-size: 0.85rem;
}
@media (min-width: 720px) { .footer__cols { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 940px) { .footer__top { grid-template-columns: 1.4fr 2fr; } }

/* ---------- 16. Page hero (interior) ------------------- */
.page-hero { padding-block: var(--sp-6) var(--sp-5); border-bottom: 1px solid var(--rule-soft); }
.page-hero__lede { font-size: var(--step-1); color: var(--ink-soft); max-width: 44rem; margin-top: var(--sp-3); }
.breadcrumbs { font-family: var(--font-mono); font-size: var(--step--1); color: var(--ink-soft); margin-bottom: var(--sp-3); }
.breadcrumbs a { color: var(--ink-soft); }
.breadcrumbs a:hover { color: var(--teal); }

/* ---------- 17. CTA band ------------------------------ */
.cta-band { text-align: center; }
.cta-band__inner { max-width: 40rem; margin-inline: auto; }
.cta-band h2 { margin-bottom: var(--sp-3); }
.cta-band p { color: var(--color-text-muted-on-navy); margin: 0 auto var(--sp-4); font-size: var(--step-1); max-width: 30rem; text-wrap: balance; }
.cta-actions { display: flex; flex-wrap: wrap; gap: var(--sp-2); justify-content: center; }

/* ---------- 18. Misc ---------------------------------- */
.pill {
  display: inline-block; font-family: var(--font-mono); font-size: var(--step--1);
  padding: 0.3rem 0.7rem; border: 1px solid var(--rule); border-radius: 999px;
  color: var(--color-label); background: var(--white);
}
.figure-frame img { display: block; width: 100%; height: auto; }
/* photographic portrait: a quiet frame so it sits with the hand-drawn spots */
.figure-frame--portrait img { border-radius: var(--radius-lg); border: 1px solid var(--color-border); }

.split { display: grid; gap: var(--sp-5); align-items: start; }
.split--center { align-items: center; }
@media (min-width: 880px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--wide-text { grid-template-columns: 1.3fr 0.7fr; }
  .split__sticky { position: sticky; top: 96px; }
}

/* ---------- 19. Reveal animation --------------------- */
.js .reveal { opacity: 0; transform: translateY(12px); }
.js .reveal.is-visible {
  opacity: 1; transform: none;
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}
.js .reveal[data-delay="1"].is-visible { transition-delay: 0.06s; }
.js .reveal[data-delay="2"].is-visible { transition-delay: 0.12s; }
.js .reveal[data-delay="3"].is-visible { transition-delay: 0.18s; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; }
  .js .reveal.is-visible { transition: none; }
  .btn, .card, .card--hover, .btn__arrow { transition: none !important; }
  .btn:hover, .btn--ghost:hover { transform: none; }
  .primary-nav a::after { transition: none; }
  .chip { transition: background 0.15s var(--ease), color 0.15s var(--ease), border-color 0.15s var(--ease); }
  .chip:active { transform: none; }
  .tcolumns { transition: none; }
  .mobile-nav li, .mobile-nav > .btn { opacity: 1; transform: none; transition: none; }
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 20. Responsive trims -------------------- */
@media (max-width: 640px) {
  :root { --sp-7: 4rem; --sp-6: 3.25rem; }
  .section { padding-block: var(--sp-7); }
  .hero { padding-block: var(--sp-5) var(--sp-6); }
  .trust-strip li { display: block; }
  .trust-strip li + li::before { display: none; }
  .trust-strip ul { line-height: 1.6; display: grid; gap: 0.5rem; }
}
@media (max-width: 480px) {
  /* button pairs stack full-width so they read as an even set */
  .hero__actions, .cta-actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn, .cta-actions .btn { width: 100%; justify-content: center; }
}