/* ppm-group.com · "The Editorial Institute" · see design.md */

:root {
  --bg: #FFFFFF;
  --bg-alt: #F6F8F6;
  --ink-1: #0D120E;
  --ink-2: #3F4A42;
  --ink-3: #5F6B64;
  --border: #E4E9E5;
  --green-600: #086632;
  --green-700: #055127;
  --green-100: #DFEBE4;
  --green-50: #F0F6F2;
  --green-900: #06301A;
  --font-sans: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Newsreader", Georgia, serif;
  --container: 1240px;
  --pad-x: clamp(24px, 4vw, 48px);
  --section-pad: clamp(6rem, 11vw, 10rem);
  --nav-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 8px); }

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

h1, h2, h3, h4 { color: var(--ink-1); font-weight: 600; }

a { color: var(--green-600); text-decoration: none; }
a:hover { color: var(--green-700); }

:focus-visible {
  outline: 2px solid var(--green-600);
  outline-offset: 2px;
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

/* ---------- primitives ---------- */

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--green-600); color: #fff;
  padding: 10px 18px; z-index: 200;
}
.skip-link:focus { left: 0; color: #fff; }

.sq {
  display: inline-block; width: 8px; height: 8px;
  background: var(--green-600); flex: none;
}

.kicker {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.8125rem; font-weight: 600;
  letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--green-600);
}

.chapter {
  font-size: 0.8125rem; font-weight: 500;
  font-feature-settings: "tnum";
  color: var(--ink-3);
}

.display {
  font-size: clamp(2.75rem, 6.5vw, 4.6rem);
  line-height: 1.03; letter-spacing: -0.03em;
  max-width: 21ch;
  text-wrap: balance;
}
.display em {
  font-family: var(--font-serif);
  font-style: italic; font-weight: 500;
  letter-spacing: -0.01em;
}

.h2 {
  font-size: clamp(2rem, 3.8vw, 3rem);
  line-height: 1.08; letter-spacing: -0.02em;
  max-width: 18ch;
  text-wrap: balance;
}

a, button { touch-action: manipulation; }

.lead {
  font-size: clamp(1.1875rem, 1.6vw, 1.3rem);
  line-height: 1.55; max-width: 56ch;
}

.prose p { max-width: 68ch; }
.prose p + p { margin-top: 1.25rem; }
.prose-sm { font-size: 0.9375rem; color: var(--ink-3); max-width: 58ch; margin-top: 1.25rem; }

.btn {
  display: inline-block;
  font-size: 1rem; font-weight: 500;
  padding: 14px 24px; border-radius: 4px;
  border: 1px solid transparent;
  transition: background-color 200ms ease-out, border-color 200ms ease-out, color 200ms ease-out;
}
.btn-primary { background: var(--green-600); color: #fff; }
.btn-primary:hover { background: var(--green-700); color: #fff; }
.btn-primary:active { background: var(--green-900); transform: translateY(1px); }
.btn-secondary { border-color: var(--ink-1); color: var(--ink-1); background: transparent; }
.btn-secondary:hover { border-color: var(--green-600); color: var(--green-600); }
.btn-secondary:active { border-color: var(--green-700); color: var(--green-700); transform: translateY(1px); }

.text-link {
  font-weight: 500;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}
.text-link .arrow { display: inline-block; margin-left: 6px; transition: transform 200ms ease-out; }
.text-link:hover .arrow { transform: translateX(4px); }

/* ---------- nav ---------- */

.nav {
  position: fixed; inset: 0 0 auto 0; height: var(--nav-h);
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease-out;
}
.nav.scrolled { border-bottom-color: var(--border); }

.nav-inner {
  max-width: var(--container); margin-inline: auto;
  padding-inline: var(--pad-x);
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo { display: flex; align-items: center; gap: 8px; }
.logo-squares { display: flex; gap: 3px; }
.logo-squares i {
  font-style: normal; font-weight: 600; font-size: 0.875rem;
  color: #fff; background: var(--green-600);
  width: 22px; height: 22px;
  display: grid; place-items: center;
}
.logo-word {
  font-weight: 600; font-size: 0.9375rem;
  letter-spacing: 0.06em; color: var(--ink-1);
}

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.btn) {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.9375rem; font-weight: 500; color: var(--ink-2);
}
.nav-links a:not(.btn) .sq { width: 6px; height: 6px; opacity: 0; transition: opacity 200ms ease-out; }
.nav-links a:not(.btn):hover { color: var(--ink-1); }
.nav-links a.active { color: var(--ink-1); }
.nav-links a.active .sq { opacity: 1; }
.nav-cta { padding: 9px 18px; font-size: 0.9375rem; }

/* language switcher */
.lang-switch {
  display: inline-flex; align-items: center; gap: 2px;
  font-size: 0.8125rem; font-weight: 500;
  font-feature-settings: "tnum";
}
.lang-switch a {
  color: var(--ink-3);
  padding: 6px;
}
.lang-switch a:hover { color: var(--green-600); }
.lang-switch a[aria-current] {
  color: var(--ink-1); font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--green-600);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}
.lang-switch .sep { color: var(--border); }
.lang-switch-mobile {
  margin-top: 32px;
}
.lang-switch-mobile a {
  padding: 10px;
  font-size: 1.125rem;
}

.nav-burger {
  display: none;
  font: inherit; font-weight: 500;
  background: none; border: 1px solid var(--border);
  border-radius: 4px; padding: 8px 14px; color: var(--ink-1);
  cursor: pointer;
}

.mobile-menu {
  position: fixed; inset: var(--nav-h) 0 0 0; z-index: 99;
  background: var(--bg);
  padding: 48px var(--pad-x);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
@media (min-width: 961px) {
  .mobile-menu { display: none; }
}
.mobile-menu nav { display: flex; flex-direction: column; gap: 8px; }
.mobile-menu nav a {
  display: flex; align-items: baseline; gap: 16px;
  font-size: clamp(2rem, 8vw, 3rem); font-weight: 600;
  letter-spacing: -0.02em; color: var(--ink-1);
  padding: 12px 0; border-bottom: 1px solid var(--border);
}
.mobile-menu .idx { font-size: 0.8125rem; font-weight: 500; color: var(--ink-3); font-feature-settings: "tnum"; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}

.hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,0.97) 0%, rgba(255,255,255,0.82) 45%, rgba(255,255,255,0.55) 100%),
    url("../assets/brand/hero-texture.png");
  background-size: cover;
  background-position: center right;
}

.hero-inner { width: 100%; padding-block: clamp(3rem, 8vh, 6rem); }
.hero-inner .kicker { margin-bottom: 2rem; }
.hero-inner .lead { margin-top: 2rem; color: var(--ink-2); }

.hero-ctas {
  display: flex; align-items: center; gap: 32px;
  margin-top: 2.75rem; flex-wrap: wrap;
}

.hero-colophon {
  width: 100%;
  display: flex; flex-wrap: wrap; gap: 12px 40px;
  padding-block: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.875rem; color: var(--ink-3);
  font-feature-settings: "tnum";
}

/* ---------- stats ---------- */

.stats {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
  padding-block: clamp(3.5rem, 6vw, 5.5rem);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px clamp(32px, 4vw, 64px);
}

.stat-num {
  display: block;
  font-size: clamp(3.2rem, 6.5vw, 5rem);
  font-weight: 400; line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink-1);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

.stat-label {
  display: flex; align-items: flex-start; gap: 10px;
  margin-top: 14px;
}

.stat-label .sq {
  margin-top: 0.35em; /* align dot with the first text line, even when the label wraps */
  font-size: 0.8125rem; font-weight: 500;
  letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--ink-3);
}

.stats-note { margin-top: 2.5rem; font-size: 0.875rem; color: var(--ink-3); }

/* ---------- sections ---------- */

.section { padding-block: var(--section-pad); }

.section-head {
  display: flex; align-items: baseline; gap: 20px;
  margin-bottom: 2.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 32px 64px;
  align-items: start;
}

/* pillars */
.pillars {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: clamp(3rem, 6vw, 5rem);
  border-top: 1px solid var(--border);
  padding-top: clamp(2rem, 4vw, 3rem);
}
.pillar dt {
  font-weight: 600; color: var(--ink-1);
  font-size: 1.125rem; letter-spacing: -0.01em;
  margin-bottom: 10px;
  display: flex; align-items: center; gap: 10px;
}
.pillar dt::before { content: ""; width: 8px; height: 8px; background: var(--green-600); flex: none; }
.pillar dd { font-size: 0.9688rem; color: var(--ink-2); max-width: 38ch; }

/* ---------- portfolio shelf ---------- */

.section-flush { padding-bottom: calc(var(--section-pad) * 0.75); }

.shelf {
  margin-top: clamp(2rem, 4vw, 3rem);
  overflow: hidden;
  padding-block: 24px 64px;
}
/* static shelf (QA, no JS, reduced motion): scrollable so all covers stay reachable */
html.qa .shelf,
html:not(.js) .shelf { overflow-x: auto; }

.shelf-track {
  display: flex; width: max-content;
}
html.js .shelf-track { animation: shelf-scroll 90s linear infinite; }
html.js .shelf:hover .shelf-track,
html.js .shelf-track.paused { animation-play-state: paused; }

.shelf-controls {
  display: flex; justify-content: flex-end;
  margin-top: 1.5rem; margin-bottom: -1rem;
}
.shelf-pause {
  font: inherit; font-size: 0.875rem; font-weight: 500;
  color: var(--ink-2); background: none;
  border: 1px solid var(--border); border-radius: 4px;
  padding: 8px 14px; cursor: pointer;
  transition: border-color 200ms ease-out, color 200ms ease-out;
}
.shelf-pause:hover { border-color: var(--green-600); color: var(--green-600); }
html.qa .shelf-pause, html:not(.js) .shelf-pause { display: none; }

.shelf-run { display: flex; gap: 32px; padding-right: 32px; }
/* static shelf (QA mode, no JS, or reduced motion): don't crop the first cover */
html.qa .shelf-run:first-child,
html:not(.js) .shelf-run:first-child { padding-left: var(--pad-x); }
@media (prefers-reduced-motion: reduce) {
  .shelf-run:first-child { padding-left: var(--pad-x); }
}

.shelf figure { position: relative; width: 200px; flex: none; }
.shelf img {
  width: 200px; height: auto;
  box-shadow: 0 2px 8px rgba(13, 18, 14, 0.14);
  transition: transform 200ms ease-out, box-shadow 200ms ease-out;
}
.shelf figure:hover img {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(13, 18, 14, 0.18);
}
.shelf figcaption {
  position: absolute; top: 100%; left: 0; right: 0;
  padding-top: 10px;
  font-size: 0.8125rem; font-weight: 500; color: var(--ink-1);
}
.shelf figcaption span { display: block; font-weight: 400; color: var(--ink-3); }

@keyframes shelf-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.shelf-note { font-size: 0.9375rem; color: var(--ink-3); max-width: 64ch; }

/* ---------- platform cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: clamp(3rem, 6vw, 5rem);
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 32px;
  display: flex; flex-direction: column;
  transition: border-color 200ms ease-out, box-shadow 200ms ease-out;
}
.card:hover {
  border-color: var(--green-600);
  box-shadow: 0 8px 24px rgba(13, 18, 14, 0.07);
}

.card-feature {
  grid-column: span 2;
  background: var(--green-50);
}

.cards-2col { grid-template-columns: repeat(2, 1fr); }

.pharma-note {
  margin-top: 2.5rem;
  font-size: 0.875rem;
  color: var(--ink-3);
  max-width: 72ch;
}

.card-media {
  margin: -32px -32px 28px;
  border-bottom: 1px solid var(--border);
  border-radius: 4px 4px 0 0;
  overflow: hidden;
  background: var(--bg-alt);
}
.card-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
}
/* icon variant: same 16/10 box as screenshots, icon centered instead of cropped */
.card-media--icon img {
  object-fit: contain;
  object-position: center;
  padding-block: 12%;
}

.card-top { display: flex; justify-content: space-between; margin-bottom: 2.25rem; }
.card-idx {
  font-size: 0.8125rem; font-weight: 500; color: var(--ink-3);
  font-feature-settings: "tnum";
}

.card h3 { font-size: 1.3125rem; letter-spacing: -0.01em; margin-bottom: 0.75rem; }
.card p { font-size: 0.9688rem; }

/* stretched link: the whole card is clickable when it has a real destination */
.card { position: relative; }
.card-link { color: inherit; }
.card-link::after { content: ""; position: absolute; inset: 0; }
.card:focus-within {
  border-color: var(--green-600);
  box-shadow: 0 8px 24px rgba(13, 18, 14, 0.07);
}

.card-meta {
  margin-top: auto; padding-top: 1.75rem;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.875rem; font-weight: 500; color: var(--ink-1);
  font-feature-settings: "tnum";
}
.card-meta .arrow { transition: transform 200ms ease-out; color: var(--green-600); }
.card:hover .card-meta .arrow { transform: translateX(4px); }

/* ---------- lab ---------- */

.section-lab { background: var(--bg-alt); border-block: 1px solid var(--border); }

.lab-intro {
  font-family: var(--font-serif);
  font-style: italic; font-weight: 400;
  font-size: clamp(1.25rem, 1.8vw, 1.45rem);
  line-height: 1.5;
  color: var(--ink-1);
}

.program { margin-top: clamp(3.5rem, 7vw, 5.5rem); }

.program-title {
  display: flex; align-items: baseline; gap: 14px;
  font-size: 1.5rem; letter-spacing: -0.01em;
}
.program-num {
  font-size: 0.875rem; font-weight: 500; color: var(--green-600);
}
.program-sub { margin-top: 6px; font-size: 0.9375rem; color: var(--ink-3); }

.theses {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 1.75rem;
}

.thesis {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 28px;
  overflow: hidden;
  transition: border-color 200ms ease-out, box-shadow 200ms ease-out;
}
.thesis:hover {
  border-color: var(--green-600);
  box-shadow: 0 8px 24px rgba(13, 18, 14, 0.07);
}

.thesis-id {
  position: absolute; top: 10px; right: 16px;
  font-size: 2.5rem; font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--green-600); opacity: 0.12;
  font-feature-settings: "tnum";
}

.thesis h4 { font-size: 1.1875rem; letter-spacing: -0.01em; margin-bottom: 0.625rem; max-width: 24ch; }
.thesis p { font-size: 0.9375rem; max-width: 52ch; }

.thesis-foot {
  display: flex; align-items: center; gap: 14px;
  margin-top: 1.375rem;
}
.chip {
  font-size: 0.8125rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--green-700); background: var(--green-100);
  padding: 4px 10px; border-radius: 2px;
}
.field { font-size: 0.8125rem; color: var(--ink-3); }

.lab-close {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  font-size: 1.0625rem; max-width: 60ch;
}

/* ---------- manifesto ---------- */

.manifesto {
  background: var(--green-900);
  padding-block: clamp(8rem, 14vw, 11rem);
}
.manifesto .container { max-width: 980px; }
.sq-white { display: block; width: 10px; height: 10px; background: #fff; margin-bottom: 3rem; }
.manifesto blockquote p {
  font-family: var(--font-serif);
  font-style: italic; font-weight: 400;
  font-size: clamp(1.9rem, 4.2vw, 3.1rem);
  line-height: 1.25;
  color: #fff;
}
.manifesto .attribution {
  margin-top: 3rem;
  font-size: 0.8125rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}

/* ---------- footer ---------- */

.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding-block: clamp(4rem, 7vw, 6rem) 2.5rem;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 48px;
}

.footer-tag { margin-top: 1.5rem; font-size: 0.9375rem; color: var(--ink-3); }

.footer-cols {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer-cols h3 {
  font-size: 0.8125rem; font-weight: 600;
  letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 1rem;
}
.footer-cols a {
  display: block;
  font-size: 0.9375rem; color: var(--ink-2);
  padding-block: 4px;
}
.footer-cols a:hover { color: var(--green-600); }
.footer-cols address { font-style: normal; font-size: 0.9375rem; line-height: 1.8; }
.footer-cols address a { display: inline; color: var(--green-600); padding: 0; }

.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: clamp(3rem, 6vw, 4.5rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem; color: var(--ink-3);
}

.footer-legal { display: flex; gap: 20px; }
.footer-legal a { color: var(--ink-3); }
.footer-legal a:hover { color: var(--green-600); }
.footer-legal a[aria-current="page"] { color: var(--ink-1); }

.footer-slim { padding-block: 2.5rem; }
.footer-slim .footer-bottom { margin-top: 0; padding-top: 0; border-top: 0; }

/* ---------- legal pages ---------- */

.legal {
  padding-top: calc(var(--nav-h) + clamp(3.5rem, 7vw, 6rem));
  padding-bottom: var(--section-pad);
}
.legal-container { max-width: 760px; }
.legal h1 {
  font-size: clamp(2rem, 3.8vw, 3rem);
  line-height: 1.08; letter-spacing: -0.02em;
  margin-top: 1.25rem;
}
.legal-meta { margin-top: 0.75rem; font-size: 0.875rem; color: var(--ink-3); }
.legal section { margin-top: clamp(2.5rem, 5vw, 3.5rem); }
.legal h2 {
  font-size: 1.25rem; letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}
.legal section p + p { margin-top: 0.75rem; }

.nav-links-static { display: flex; }

/* ---------- reveal motion ---------- */

html.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 400ms ease-out, transform 400ms ease-out;
}
html.js .reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-links.nav-links-static { display: flex; gap: 16px; }
  .nav-burger { display: block; }
  .grid-2 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr 1fr; }
  .card-feature { grid-column: span 2; }
  .theses { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .card-feature { grid-column: auto; }
  .footer-cols { grid-template-columns: 1fr; }
  .hero-ctas { gap: 20px; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .shelf-track { animation: none; }
  .shelf { overflow-x: auto; }
  .shelf-run:first-child { padding-left: var(--pad-x); }
  .shelf-pause { display: none; }
  .reveal,
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card, .thesis, .text-link .arrow, .card-meta .arrow, .shelf img { transition: none; }
}

/* QA rendering mode (?qa=1): final state on first paint, no motion */
html.qa { scroll-behavior: auto; }
html.qa .shelf-track { animation: none; }
html.qa .nav { -webkit-backdrop-filter: none; backdrop-filter: none; background: #fff; border-bottom-color: var(--border); }
html.qa .hero { min-height: 680px; }