/* =========================================================
   RS Professional — Design System
   Clinical, evidence-led, SEND-specialist
   ========================================================= */

:root {
  /* Palette */
  --navy:      #0B2A4A;
  --navy-800:  #0F345A;
  --teal:      #2E7D8F;
  --teal-700:  #256676;
  --sage:      #B8CFC4;
  --sage-100:  #E4EEE8;
  --paper:     #F7F5F0;
  --paper-2:   #EFECE4;
  --ink:       #12181F;
  --ink-60:    #12181F99;
  --ink-40:    #12181F66;
  --rule:      #12181F1A;
  --rule-2:    #12181F14;
  --white:     #FFFFFF;

  /* Type */
  --serif: "Newsreader", "Source Serif Pro", Georgia, serif;
  --sans:  "Manrope", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Layout */
  --maxw: 1240px;
  --gutter: clamp(20px, 4vw, 56px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* --------- Typography scale --------- */
.h-display {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(44px, 6.5vw, 88px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--navy);
  margin: 0;
  text-wrap: balance;
}
.h-display em {
  font-style: italic;
  font-weight: 300;
  color: var(--teal);
}

.h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 4.4vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--navy);
  margin: 0;
  text-wrap: balance;
}
.h1 em { font-style: italic; color: var(--teal); font-weight: 300; }

.h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(28px, 2.6vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--navy);
  margin: 0;
  text-wrap: balance;
}
.h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--navy);
  margin: 0;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 0 0 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--teal);
  display: inline-block;
}
.lede {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.5;
  color: var(--ink);
  max-width: 62ch;
}
.body { font-size: 16px; line-height: 1.65; color: var(--ink); }
.body p { margin: 0 0 1em; max-width: 65ch; }
.small { font-size: 13px; color: var(--ink-60); }
.mono {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-60);
}

/* --------- Layout primitives --------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.section { padding: clamp(64px, 9vw, 140px) 0; }
.section-sm { padding: clamp(40px, 5vw, 72px) 0; }
.divider {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}
.grid { display: grid; gap: clamp(24px, 3vw, 48px); }
.two-col { grid-template-columns: 1fr 1fr; }
.three-col { grid-template-columns: repeat(3, 1fr); }
.four-col { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .two-col, .three-col, .four-col { grid-template-columns: 1fr; }
}

/* --------- Buttons --------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 2px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all .18s ease;
  border: 1px solid transparent;
  text-decoration: none;
}
.btn-primary {
  background: var(--navy);
  color: var(--paper);
}
.btn-primary:hover { background: var(--teal); }
.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-ghost:hover { background: var(--navy); color: var(--paper); }
.btn-light {
  background: var(--paper);
  color: var(--navy);
}
.btn-light:hover { background: var(--white); }
.btn .arrow {
  display: inline-block;
  transition: transform .18s ease;
}
.btn:hover .arrow { transform: translateX(3px); }

/* --------- Nav --------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
}
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 2px;
  background: var(--navy);
  color: var(--paper);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.brand-word {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1;
}
.brand-sub {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-60);
  margin-top: 3px;
}
.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
  align-items: center;
}
.nav-link {
  font-size: 14px;
  color: var(--ink);
  font-weight: 500;
  position: relative;
  padding: 6px 0;
}
.nav-link:hover { color: var(--teal); }
.nav-link.active { color: var(--teal); }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--teal);
}
.nav-cta {
  margin-left: 8px;
}
@media (max-width: 980px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
}

/* --------- Footer --------- */
.footer {
  background: var(--navy);
  color: var(--paper);
  padding: 80px 0 32px;
  margin-top: 0;
}
.footer .container { max-width: var(--maxw); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid #ffffff22;
}
.footer h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sage);
  margin: 0 0 20px;
  font-weight: 500;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer a { color: #ffffffCC; font-size: 14px; }
.footer a:hover { color: var(--sage); }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.footer-brand .brand-mark {
  background: var(--sage);
  color: var(--navy);
}
.footer-brand .brand-word { color: var(--paper); }
.footer-brand .brand-sub { color: var(--sage); }
.footer-tag {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 300;
  line-height: 1.45;
  color: #ffffffCC;
  max-width: 34ch;
  margin-bottom: 24px;
}
.footer-meta {
  margin-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  color: #ffffff88;
  font-size: 12px;
}
.footer-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid #ffffff2E;
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #ffffffCC;
}
.badge .dot {
  width: 6px; height: 6px;
  background: var(--sage);
  border-radius: 50%;
}
@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* --------- Cards --------- */
.card {
  background: var(--white);
  border: 1px solid var(--rule);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--teal); }
.card-tight { padding: 24px; }
.card-dark {
  background: var(--navy);
  color: var(--paper);
  border-color: transparent;
}
.card-dark .h2, .card-dark .h3, .card-dark .h1 { color: var(--paper); }
.card-dark .eyebrow { color: var(--sage); }
.card-dark .eyebrow::before { background: var(--sage); }

/* --------- Image placeholder --------- */
.img-slot {
  position: relative;
  background:
    repeating-linear-gradient(
      135deg,
      var(--sage-100) 0 14px,
      var(--paper-2) 14px 28px
    );
  border: 1px solid var(--rule);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 20px;
  min-height: 260px;
}
.img-slot .img-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper);
  padding: 8px 12px;
  border: 1px solid var(--rule);
  max-width: 90%;
  line-height: 1.3;
}
.img-slot .img-tag::before {
  content: "▨ IMG · ";
  color: var(--teal);
}
.img-slot.dark {
  background:
    repeating-linear-gradient(
      135deg,
      #1a3a5c 0 14px,
      #0F345A 14px 28px
    );
  border-color: #ffffff1A;
}
.img-slot.dark .img-tag { background: var(--navy); color: var(--paper); border-color: #ffffff2E; }

/* --------- Compliance chip --------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--rule);
  background: var(--white);
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
}
.chip .tick {
  width: 14px; height: 14px;
  background: var(--teal);
  color: var(--white);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 9px;
  font-weight: 700;
  font-family: var(--sans);
}
.chip-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* --------- Stat block --------- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.stat {
  padding: 32px 24px;
  border-right: 1px solid var(--rule);
}
.stat:last-child { border-right: 0; }
.stat-num {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 4vw, 56px);
  line-height: 1;
  color: var(--navy);
  letter-spacing: -0.02em;
}
.stat-num em { font-style: italic; font-weight: 300; color: var(--teal); }
.stat-label {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-60);
}
@media (max-width: 780px) {
  .stat-row { grid-template-columns: 1fr 1fr; }
  .stat { border-bottom: 1px solid var(--rule); }
  .stat:nth-child(2n) { border-right: 0; }
}

/* --------- Hero (home) --------- */
.hero {
  padding: clamp(48px, 8vw, 96px) 0 clamp(64px, 8vw, 120px);
  position: relative;
}
.hero-eyebrow-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 56px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: end;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

/* --------- Path cards (dual audience) --------- */
.paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.path {
  background: var(--white);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 320px;
  transition: background .2s ease;
}
.path:hover { background: var(--sage-100); }
.path-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}
.path-title {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.1;
  color: var(--navy);
  letter-spacing: -0.015em;
}
.path-body {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.6;
  flex-grow: 1;
}
.path-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 14px;
  color: var(--navy);
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}
.path-link:hover { color: var(--teal); }
@media (max-width: 780px) {
  .paths { grid-template-columns: 1fr; }
}

/* --------- Feature list --------- */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
}
.feature-list li {
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 16px;
  align-items: baseline;
}
.feature-list li:last-child { border-bottom: 0; }
.feature-list .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--teal);
  letter-spacing: 0.14em;
}
.feature-list .name {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--navy);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.feature-list .desc {
  font-size: 14px;
  color: var(--ink-60);
  line-height: 1.55;
}

/* --------- Specialism matrix --------- */
.matrix {
  border: 1px solid var(--rule);
  border-radius: 0;
  overflow: hidden;
  background: var(--white);
}
.matrix-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  border-bottom: 1px solid var(--rule);
}
.matrix-row:last-child { border-bottom: 0; }
.matrix-label {
  padding: 24px;
  background: var(--paper-2);
  font-family: var(--serif);
  font-size: 18px;
  color: var(--navy);
  border-right: 1px solid var(--rule);
}
.matrix-cells {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}
.matrix-cell {
  padding: 24px 18px;
  border-right: 1px solid var(--rule);
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink);
}
.matrix-cell:last-child { border-right: 0; }
.matrix-cell .cell-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 6px;
  display: block;
}
@media (max-width: 900px) {
  .matrix-row { grid-template-columns: 1fr; }
  .matrix-label { border-right: 0; border-bottom: 1px solid var(--rule); }
  .matrix-cells { grid-template-columns: 1fr 1fr; }
  .matrix-cell { border-bottom: 1px solid var(--rule); }
}

/* --------- Process steps --------- */
.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
}
.process-step {
  padding: 32px 20px 32px 0;
  border-right: 1px solid var(--rule);
  padding-right: 24px;
  position: relative;
}
.process-step:last-child { border-right: 0; }
.process-step .step-num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--teal);
  letter-spacing: 0.16em;
  margin-bottom: 20px;
}
.process-step .step-title {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--navy);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.process-step .step-desc {
  font-size: 13px;
  color: var(--ink-60);
  line-height: 1.5;
}
@media (max-width: 900px) {
  .process { grid-template-columns: 1fr; }
  .process-step { border-right: 0; border-bottom: 1px solid var(--rule); padding-right: 0; }
}

/* --------- Quote --------- */
.quote {
  padding: clamp(48px, 6vw, 80px) 0;
}
.quote-mark {
  font-family: var(--serif);
  font-size: 80px;
  color: var(--teal);
  line-height: 0.6;
  margin-bottom: 20px;
}
.quote-text {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(24px, 2.4vw, 34px);
  line-height: 1.35;
  color: var(--navy);
  letter-spacing: -0.01em;
  max-width: 24ch;
}
.quote-attr {
  margin-top: 32px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-60);
}

/* --------- CTA band --------- */
.cta-band {
  background: var(--navy);
  color: var(--paper);
  padding: clamp(56px, 7vw, 96px) 0;
}
.cta-band .h1 { color: var(--paper); }
.cta-band .h1 em { color: var(--sage); }
.cta-band .lede { color: #ffffffCC; }
.cta-band .btn-primary {
  background: var(--sage);
  color: var(--navy);
}
.cta-band .btn-primary:hover { background: var(--paper); }
.cta-band .btn-ghost {
  color: var(--paper);
  border-color: #ffffff55;
}
.cta-band .btn-ghost:hover { background: var(--paper); color: var(--navy); border-color: var(--paper); }

/* --------- Page header (inner pages) --------- */
.page-header {
  padding: clamp(56px, 7vw, 96px) 0 clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--rule);
}
.breadcrumb {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-60);
  margin-bottom: 32px;
  display: flex;
  gap: 10px;
}
.breadcrumb a { color: var(--ink-60); }
.breadcrumb a:hover { color: var(--teal); }
.breadcrumb .sep { color: var(--ink-40); }

/* --------- FAQ --------- */
.faq {
  border-top: 1px solid var(--rule);
}
.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 28px 0;
}
.faq-q {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  cursor: pointer;
  list-style: none;
  align-items: baseline;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q-text {
  font-family: var(--serif);
  font-size: clamp(20px, 1.8vw, 24px);
  color: var(--navy);
  letter-spacing: -0.01em;
  flex-grow: 1;
}
.faq-toggle {
  font-family: var(--mono);
  font-size: 20px;
  color: var(--teal);
  flex-shrink: 0;
}
details[open] .faq-toggle::before { content: "−"; }
details:not([open]) .faq-toggle::before { content: "+"; }
.faq-a {
  margin-top: 16px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.65;
  max-width: 70ch;
}

/* --------- Form --------- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.form-grid .full { grid-column: 1 / -1; }
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-60);
  margin-bottom: 8px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 14px 14px;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--ink);
}
.field textarea { min-height: 140px; resize: vertical; font-family: var(--sans); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--teal);
}
.form-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--rule);
}
.form-tab {
  padding: 16px 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-60);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  background: none;
  border-top: 0; border-left: 0; border-right: 0;
}
.form-tab.active {
  color: var(--navy);
  border-bottom-color: var(--teal);
}
@media (max-width: 700px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* --------- Meta strip --------- */
.meta-strip {
  background: var(--sage-100);
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--navy);
}
.meta-strip .container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.meta-strip .dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--teal);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}
@media (max-width: 700px) {
  .meta-strip .hide-sm { display: none; }
}

/* --------- Utilities --------- */
.text-teal { color: var(--teal); }
.text-navy { color: var(--navy); }
.text-muted { color: var(--ink-60); }
.bg-paper2 { background: var(--paper-2); }
.bg-navy { background: var(--navy); color: var(--paper); }
.bg-navy .h1, .bg-navy .h2, .bg-navy .h3 { color: var(--paper); }
.mt-40 { margin-top: 40px; }
.mt-24 { margin-top: 24px; }
.mb-24 { margin-bottom: 24px; }