/* STIDO public design system — premium dark green */
:root {
  --bg: #03140f;
  --bg-elevated: #071a14;
  --surface: #0a2219;
  --surface-2: #0e2c21;
  --fg: #f3f7f4;
  --fg-soft: #d8e4dc;
  --muted: #9bb0a4;
  --accent: #2f9e6a;
  --accent-soft: rgba(47, 158, 106, 0.16);
  --accent-strong: #3cb87c;
  --line: rgba(207, 224, 214, 0.12);
  --line-strong: rgba(47, 158, 106, 0.35);
  --danger: #c45c5c;
  --radius: 1rem;
  --radius-sm: 0.7rem;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --max: 1120px;
  --legal-max: 820px;
  --header-h: 4.25rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--fg);
  background:
    radial-gradient(1100px 520px at 8% -8%, #123528 0%, transparent 55%),
    radial-gradient(900px 480px at 100% 0%, #0d2a20 0%, transparent 48%),
    radial-gradient(700px 400px at 50% 100%, #0a241c 0%, transparent 45%),
    var(--bg);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent-strong); text-decoration: none; }
a:hover { color: #7fd4a8; }
p, li { color: var(--muted); }
strong { color: var(--fg-soft); }

.wrap, .site-header .inner, .site-footer .inner, .section-inner {
  width: min(var(--max), 92vw);
  margin: 0 auto;
}
.legal-wrap { width: min(var(--legal-max), 92vw); margin: 0 auto; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(3, 20, 15, 0.82);
  border-bottom: 1px solid var(--line);
}
.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 1rem;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--fg);
  font-size: 1.05rem;
}
.header-start {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 0 0 auto;
}
.header-post {
  white-space: nowrap;
  padding: 0.45rem 0.9rem;
  font-size: 0.88rem;
}
.nav-post-link { display: none; }
.nav {
  display: flex;
  align-items: center;
  gap: 0.15rem 0.85rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav > a, .nav-drop > summary {
  color: var(--muted);
  font-size: 0.9rem;
  list-style: none;
  cursor: pointer;
}
.nav > a:hover, .nav-drop > summary:hover { color: var(--fg); }
.nav-drop { position: relative; }
.nav-drop > summary { list-style: none; }
.nav-drop > summary::-webkit-details-marker { display: none; }
.nav-drop[open] > summary { color: var(--fg); }
.nav-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 0.65rem);
  min-width: 220px;
  padding: 0.75rem;
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  display: grid;
  gap: 0.35rem;
}
.nav-panel a {
  display: block;
  padding: 0.55rem 0.7rem;
  border-radius: 0.5rem;
  color: var(--fg-soft);
  font-size: 0.88rem;
}
.nav-panel a:hover { background: var(--accent-soft); color: var(--fg); }
.nav-panel .sub { color: var(--muted); font-size: 0.78rem; margin: 0.35rem 0.7rem 0.1rem; text-transform: uppercase; letter-spacing: 0.08em; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.72rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 650;
  font-size: 0.92rem;
  text-decoration: none !important;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: #04140f !important; }
.btn-primary:hover { background: var(--accent-strong); color: #04140f !important; }
.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--fg-soft) !important;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--fg) !important; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

/* Home — one-screen product story (desktop) */
.page-home {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-home main { flex: 1 1 auto; display: flex; }
.home-hero {
  width: min(var(--max), 92vw);
  margin: 0 auto;
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.15fr);
  grid-template-areas:
    "copy pillars"
    "disclosure disclosure";
  column-gap: clamp(1.25rem, 3vw, 2.5rem);
  row-gap: 0.85rem;
  align-content: center;
  padding: clamp(1rem, 2.2vh, 1.75rem) 0 clamp(0.85rem, 1.8vh, 1.35rem);
  min-height: calc(100vh - var(--header-h) - 5.5rem);
}
.home-hero-copy { grid-area: copy; align-self: center; }
.home-pillars {
  grid-area: pillars;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  align-content: center;
}
.home-hero .eyebrow { margin: 0 0 0.55rem; }
.home-hero h1 {
  margin: 0 0 0.55rem;
  font-size: clamp(2.35rem, 5.2vw, 3.6rem);
  letter-spacing: 0.04em;
  line-height: 1.02;
  color: var(--fg);
}
.home-hero .lead {
  max-width: 28rem;
  font-size: clamp(0.98rem, 1.35vw, 1.12rem);
  line-height: 1.5;
  color: var(--fg-soft);
  margin: 0;
}
.home-hero-cta { margin-top: 1.1rem; gap: 0.65rem; }
.home-link-more {
  display: inline-block;
  margin-top: 0.85rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.home-link-more:hover { color: var(--accent-strong); }
.home-card {
  padding: 0.95rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-height: 0;
}
.home-card h2 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.home-card p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.45;
}
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.15rem;
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.48rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
}
.home-disclosure {
  grid-area: disclosure;
  margin: 0;
  padding: 0.7rem 0.95rem;
  font-size: 0.86rem;
  line-height: 1.45;
}
.site-footer-compact {
  padding: 1rem 0 1.25rem;
}
.site-footer-compact .inner { gap: 0.35rem; }
.site-footer-compact p { margin: 0; font-size: 0.82rem; }
@media (max-width: 1100px) {
  .home-pillars { grid-template-columns: 1fr; }
  .home-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  }
}
@media (max-width: 900px) {
  .page-home main { display: block; }
  .home-hero {
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: 1.5rem 0 1.25rem;
    gap: 1.15rem;
  }
  .home-pillars { grid-template-columns: 1fr; }
  .home-hero .lead { max-width: 36rem; }
}
@media (min-width: 901px) and (max-height: 780px) {
  .home-hero {
    min-height: calc(100vh - var(--header-h) - 4.75rem);
    padding-top: 0.65rem;
    padding-bottom: 0.55rem;
    row-gap: 0.65rem;
  }
  .home-hero h1 { font-size: clamp(2.1rem, 4.2vw, 3rem); }
  .home-card { padding: 0.75rem 0.85rem; }
  .home-card p { font-size: 0.82rem; }
  .home-disclosure { padding: 0.55rem 0.8rem; font-size: 0.8rem; }
}

/* Hero */
.hero {
  padding: clamp(3.2rem, 8vw, 5.5rem) 0 clamp(2.5rem, 5vw, 3.5rem);
}
.eyebrow {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.74rem;
  margin: 0 0 1rem;
}
.hero h1, .page-hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2.4rem, 6.5vw, 4.4rem);
  letter-spacing: 0.03em;
  line-height: 1.05;
  color: var(--fg);
}
.lead {
  max-width: 38rem;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--fg-soft);
  margin: 0;
  line-height: 1.65;
}
.page-hero {
  padding: clamp(2.4rem, 6vw, 4rem) 0 1.5rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2rem;
}
.page-hero .lead { max-width: 42rem; }
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.1rem;
  margin-top: 1.1rem;
  font-size: 0.88rem;
  color: var(--muted);
}

/* Sections */
.section { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { margin-bottom: 1.75rem; max-width: 40rem; }
.section-head h2 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.55rem, 3.5vw, 2.15rem);
  letter-spacing: 0.02em;
  color: var(--fg);
}
.section-head p { margin: 0; }

/* Cards / grids */
.grid { display: grid; gap: 1rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
.post-band {
  border-bottom: 1px solid var(--line);
  background: rgba(47, 158, 106, 0.08);
}
.post-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.1rem 0;
}
.post-band h2 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  color: var(--fg);
  letter-spacing: 0.01em;
}
.post-band p { margin: 0; max-width: 46rem; color: var(--fg-soft); }
@media (max-width: 720px) {
  .site-header .inner { flex-wrap: wrap; align-items: flex-start; padding: 0.75rem 0; }
  .header-start { width: 100%; justify-content: space-between; }
  .nav { width: 100%; justify-content: flex-start; gap: 0.45rem 0.7rem; }
  .nav > a, .nav-drop > summary { font-size: 0.82rem; }
  .nav-post-link { display: inline; font-weight: 700; color: var(--fg); }
  .btn { padding: 0.55rem 0.9rem; font-size: 0.84rem; }
  .header-post { padding: 0.5rem 0.85rem; }
  .post-band-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .nav-panel { position: static; margin-top: 0.5rem; box-shadow: none; }
  .flow .arrow { width: 100%; text-align: center; }
}

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem;
}
.card:hover { border-color: var(--line-strong); }
.card h3, .card h2 {
  margin: 0 0 0.45rem;
  font-size: 1.08rem;
  color: var(--accent-strong);
}
.card p { margin: 0; font-size: 0.94rem; }
.card ul { margin: 0.7rem 0 0; padding-left: 1.1rem; }
.card li { margin: 0.25rem 0; font-size: 0.9rem; }
.card .kicker {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.55rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  color: var(--fg-soft);
  background: rgba(255,255,255,0.03);
}
.badge-verified { border-color: var(--line-strong); color: #8fdfb4; background: var(--accent-soft); }
.badge-free { color: #b8d4c6; }
.badge-finance { color: #9fd4b8; }
.badge-partner { color: #c5d8cc; }

.callout {
  border: 1px solid var(--line-strong);
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  color: var(--fg-soft);
  font-size: 0.95rem;
}
.callout strong { color: var(--fg); }

/* Student ID mock */
.id-card {
  max-width: 340px;
  margin: 1.25rem 0;
  padding: 1.35rem 1.4rem;
  border-radius: 1.15rem;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(145deg, rgba(47,158,106,0.18), transparent 45%),
    var(--surface-2);
  box-shadow: var(--shadow);
}
.id-card .top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.2rem;
}
.id-card .logo { font-weight: 800; letter-spacing: 0.14em; }
.id-card .fields { display: grid; gap: 0.55rem; }
.id-card .label { font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.id-card .value { color: var(--fg); font-size: 0.98rem; }
.id-qr {
  margin-top: 1.1rem;
  width: 64px;
  height: 64px;
  border: 1px dashed var(--line-strong);
  border-radius: 0.4rem;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.7rem;
}

/* Phone journey */
.journey-phone {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}
@media (max-width: 800px) { .journey-phone { grid-template-columns: repeat(2, 1fr); } }
.phone-step {
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  padding: 1.1rem 1rem 1.2rem;
  background: var(--surface);
  min-height: 160px;
}
.phone-step .when {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 0.55rem;
}
.phone-step h3 { margin: 0 0 0.35rem; font-size: 1rem; color: var(--fg); }
.phone-step p { margin: 0; font-size: 0.86rem; }

/* Ecosystem */
.eco {
  display: grid;
  gap: 1.25rem;
  justify-items: center;
  text-align: center;
}
.eco-core {
  width: min(100%, 720px);
  border: 1px solid var(--line-strong);
  border-radius: 1.5rem;
  padding: 1.5rem 1.25rem;
  background: linear-gradient(180deg, rgba(47,158,106,0.12), transparent);
}
.eco-core .title {
  font-weight: 800;
  letter-spacing: 0.18em;
  margin-bottom: 1rem;
}
.eco-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  text-align: left;
}
@media (max-width: 700px) { .eco-pillars { grid-template-columns: 1fr; } }
.eco-pillar {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.9rem;
  background: rgba(0,0,0,0.18);
}
.eco-pillar h4 { margin: 0 0 0.45rem; color: var(--accent-strong); font-size: 0.95rem; }
.eco-pillar ul { margin: 0; padding-left: 1rem; }
.eco-pillar li { font-size: 0.84rem; }
.eco-ring {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
}
.eco-ring span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
  color: var(--fg-soft);
}

/* Timeline / steps */
.steps, .timeline {
  display: grid;
  gap: 0.75rem;
  counter-reset: step;
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.02);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #04140f;
  background: var(--accent);
}
.step h3 { margin: 0 0 0.25rem; font-size: 1rem; color: var(--fg); }
.step p { margin: 0; font-size: 0.9rem; }

.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}
.flow .node {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  font-size: 0.84rem;
  color: var(--fg-soft);
  background: var(--surface);
}
.flow .arrow { color: var(--accent); font-size: 0.9rem; }

/* Limit ladder / fee table */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.table th, .table td {
  text-align: left;
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}
.table th { color: var(--fg-soft); font-weight: 650; }
.table td:last-child, .table th:last-child { text-align: right; color: var(--fg); }

.score-demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 640px) { .score-demo { grid-template-columns: 1fr; } }
.score-box {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 1.2rem;
  background: var(--surface-2);
}
.score-box .num {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 800;
  color: var(--fg);
  letter-spacing: 0.02em;
}
.score-box .hint { font-size: 0.78rem; color: var(--muted); margin-top: 0.35rem; }

/* Filters (CSS-only via radio + labels) */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1rem 0 1.4rem;
}
.filters a, .filters label {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font-size: 0.84rem;
  color: var(--muted);
  cursor: pointer;
}
.filters a:hover, .filters a.is-active {
  border-color: var(--line-strong);
  color: var(--fg);
  background: var(--accent-soft);
}

/* Legal layout */
.legal-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  width: min(1080px, 92vw);
  margin: 0 auto 3rem;
}
@media (max-width: 860px) {
  .legal-layout { grid-template-columns: 1fr; }
}
.toc {
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  background: rgba(7, 26, 20, 0.9);
}
.toc summary {
  cursor: pointer;
  color: var(--fg);
  font-weight: 650;
  list-style: none;
}
.toc summary::-webkit-details-marker { display: none; }
.toc nav { display: grid; gap: 0.35rem; margin-top: 0.75rem; }
.toc a {
  color: var(--muted);
  font-size: 0.84rem;
  padding: 0.25rem 0;
}
.toc a:hover { color: var(--fg); }
.legal-content h2 {
  scroll-margin-top: calc(var(--header-h) + 1rem);
  margin: 2rem 0 0.65rem;
  font-size: 1.25rem;
  color: var(--fg);
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content ul { padding-left: 1.15rem; }
.back-top {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.88rem;
}

.contact-card {
  display: grid;
  gap: 0.35rem;
  padding: 1.2rem 1.3rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface-2);
  margin-top: 1.5rem;
}
.contact-card h3 { margin: 0 0 0.35rem; color: var(--fg); font-size: 1.05rem; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding: 2rem 0 2.75rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer .inner { display: grid; gap: 0.85rem; }
.site-footer .links { display: flex; flex-wrap: wrap; gap: 0.65rem 1rem; }
.site-footer a { color: #cfe0d6; }
.site-footer strong { color: var(--fg-soft); }

.example-tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  margin-bottom: 0.55rem;
}

.link-more {
  display: inline-flex;
  margin-top: 1.25rem;
  font-weight: 650;
  color: var(--accent-strong);
}
.link-more:hover { color: #9fe0bd; }

.two-col {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; } }

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