/* ───────────────────────────────────────────────────────────────
   InnerStack — Landing Page Stylesheet
   Brand: 内外兼修 · 系统稳健
   Palette: 墨#0d1b2a · 玉#2d6a4f · 金#c9a84c · 宣纸#f5f0e8
─────────────────────────────────────────────────────────────── */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  /* Palette */
  --ink:        #0d1b2a;
  --ink-2:      #111e2e;
  --ink-3:      #0a1520;
  --jade:       #2d6a4f;
  --jade-lt:    #52b788;
  --jade-glow:  rgba(82, 183, 136, 0.18);
  --gold:       #c9a84c;
  --gold-lt:    #e6c77a;
  --gold-glow:  rgba(201, 168, 76, 0.12);
  --paper:      #f5f0e8;
  --paper-dk:   #e4ddd0;
  --paper-muted: rgba(245, 240, 232, 0.45);
  --paper-faint: rgba(245, 240, 232, 0.2);

  /* Typography */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --font-em:    'Cormorant Garamond', 'Georgia', serif;
  --font-mono:  'JetBrains Mono', 'Courier New', monospace;

  /* Spacing */
  --space-section: clamp(72px, 10vw, 120px);
  --radius:      6px;
  --radius-lg:   14px;

  /* Shadows */
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.14);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.2);

  /* Transitions */
  --t:          0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --t-fast:     0.22s ease;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-serif);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul { list-style: none; }
input, textarea { font: inherit; }

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--jade); border-radius: 3px; }

/* ── Text selection ─────────────────────────────────────────── */
::selection { background: var(--jade); color: var(--paper); }

/* ── Layout helpers ─────────────────────────────────────────── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}
.section { padding: var(--space-section) 0; }

/* ── Section divider ────────────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(45, 106, 79, 0.4) 20%,
    rgba(82, 183, 136, 0.5) 50%,
    rgba(45, 106, 79, 0.4) 80%,
    transparent 100%
  );
  border: none;
}

/* ── Section labels / titles ────────────────────────────────── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  color: var(--jade-lt);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.title-em { color: var(--jade-lt); }
.section-rule {
  width: 48px; height: 2px;
  background: linear-gradient(90deg, var(--jade), var(--jade-lt));
  margin: 0 0 28px;
}
.section-lead {
  font-size: 1.05rem;
  font-weight: 300;
  color: rgba(245, 240, 232, 0.65);
  line-height: 1.9;
  margin-bottom: 16px;
}
.section-body {
  font-size: 0.92rem;
  font-weight: 300;
  color: rgba(245, 240, 232, 0.5);
  line-height: 1.85;
}
.section-header { text-align: center; margin-bottom: 64px; }
.section-header .section-rule { margin: 0 auto 24px; }
.section-header .section-lead { margin: 0 auto; }

/* ── Navigation ─────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(13, 27, 42, 0.82);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid rgba(45, 106, 79, 0.15);
  transition: background var(--t), border-color var(--t);
}
nav.scrolled {
  background: rgba(13, 27, 42, 0.96);
  border-bottom-color: rgba(45, 106, 79, 0.3);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper);
  transition: color var(--t-fast);
}
.nav-logo:hover { color: var(--jade-lt); }
.nav-logo-mark {
  width: 34px; height: 34px;
  border: 1.5px solid var(--jade-lt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--jade-lt);
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: rgba(245, 240, 232, 0.6);
  transition: color var(--t-fast);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--jade-lt);
  transform: scaleX(0);
  transition: transform var(--t);
}
.nav-link:hover { color: var(--jade-lt); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-cta {
  padding: 8px 20px;
  border: 1px solid var(--jade-lt);
  border-radius: var(--radius);
  color: var(--jade-lt) !important;
  font-size: 0.78rem !important;
  letter-spacing: 0.1em !important;
  transition: background var(--t), color var(--t) !important;
}
.nav-cta:hover {
  background: var(--jade) !important;
  color: var(--white) !important;
}
.nav-cta::after { display: none !important; }

/* Mobile toggle */
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}
.nav-mobile-toggle span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--paper-muted);
  border-radius: 1px;
  transition: var(--t);
}
.nav-mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 20px 20px;
  background: rgba(13, 27, 42, 0.98);
  border-top: 1px solid rgba(45, 106, 79, 0.15);
}
.nav-mobile-menu.open { display: flex; }
.mobile-link {
  display: block;
  padding: 10px 0;
  font-size: 1rem;
  color: rgba(245, 240, 232, 0.7);
  border-bottom: 1px solid rgba(45, 106, 79, 0.1);
  transition: color var(--t-fast);
}
.mobile-link:hover { color: var(--jade-lt); }
.mobile-cta {
  margin-top: 8px;
  border: 1px solid var(--jade-lt);
  border-radius: var(--radius);
  padding: 10px 16px;
  text-align: center;
  color: var(--jade-lt) !important;
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 100px 0 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(45, 106, 79, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 106, 79, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  top: -200px; right: -150px;
  background: radial-gradient(circle, rgba(45, 106, 79, 0.14) 0%, transparent 70%);
  animation: orbFloat 14s ease-in-out infinite;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  bottom: -100px; left: -100px;
  background: radial-gradient(circle, rgba(201, 168, 76, 0.09) 0%, transparent 70%);
  animation: orbFloat 18s ease-in-out infinite reverse;
}
.hero-orb-3 {
  width: 280px; height: 280px;
  top: 30%; left: 15%;
  background: radial-gradient(circle, rgba(45, 106, 79, 0.08) 0%, transparent 70%);
  animation: orbFloat 22s ease-in-out infinite;
  animation-delay: -7s;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(24px, -36px) scale(1.06); }
  66%       { transform: translate(-18px, 22px) scale(0.96); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  width: 100%;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.15s forwards;
}
.eyebrow-line {
  display: block;
  width: 40px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--jade-lt));
}
.eyebrow-line:last-child {
  background: linear-gradient(90deg, var(--jade-lt), transparent);
}
.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.3s forwards;
}
.hero-title em {
  font-style: normal;
  color: var(--jade-lt);
}
.hero-tagline {
  font-size: 1.1rem;
  font-weight: 300;
  color: rgba(245, 240, 232, 0.65);
  line-height: 2;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.5s forwards;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.7s forwards;
}
.hero-stack-icons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.9s forwards;
}
.stack-icon {
  width: 36px; height: 36px;
  color: rgba(245, 240, 232, 0.25);
  transition: color var(--t-fast), transform var(--t-fast);
}
.stack-icon:hover {
  color: var(--jade-lt);
  transform: scale(1.15);
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  animation: fadeUp 0.8s ease 1.2s forwards;
}
.scroll-line {
  width: 1px; height: 44px;
  background: linear-gradient(to bottom, var(--jade-lt), transparent);
  animation: scrollPulse 2.4s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50%       { opacity: 0.8; transform: scaleY(1.1); }
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--jade);
  color: var(--paper);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: background var(--t), transform var(--t), box-shadow var(--t);
  border: 1px solid transparent;
}
.btn-primary:hover {
  background: var(--jade-lt);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(45, 106, 79, 0.4);
}
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: 1px solid rgba(245, 240, 232, 0.18);
  color: rgba(245, 240, 232, 0.65);
  border-radius: var(--radius);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: border-color var(--t), color var(--t), transform var(--t);
}
.btn-ghost:hover {
  border-color: var(--jade-lt);
  color: var(--jade-lt);
  transform: translateY(-2px);
}

/* ── Philosophy Section ─────────────────────────────────────── */
.section-philosophy { background: var(--ink-2); }
.phil-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(48px, 8vw, 100px);
  align-items: center;
}
.phil-text .section-lead { font-size: 1.02rem; margin-bottom: 12px; }
.phil-text .section-body { font-size: 0.9rem; }
.phil-pillars { display: flex; flex-direction: column; gap: 28px; margin-top: 40px; }
.phil-pillar {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.phil-pillar-icon {
  width: 46px; height: 46px;
  flex-shrink: 0;
  border: 1px solid rgba(45, 106, 79, 0.35);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--jade-lt);
  background: rgba(45, 106, 79, 0.07);
}
.phil-pillar h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; }
.phil-pillar p { font-size: 0.85rem; font-weight: 300; color: rgba(245, 240, 232, 0.5); line-height: 1.75; }

/* Orbit visual */
.phil-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 0;
}
.phil-orbit {
  width: 340px; height: 340px;
  position: relative;
}
.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(45, 106, 79, 0.2);
  top: 0; left: 0; right: 0; bottom: 0;
  animation: spinRing linear infinite;
}
.orbit-ring-1 { width: 100%; height: 100%; animation-duration: 36s; }
.orbit-ring-2 {
  width: 72%; height: 72%;
  top: 14%; left: 14%;
  border-color: rgba(201, 168, 76, 0.18);
  animation-duration: 26s;
  animation-direction: reverse;
}
.orbit-ring-3 { width: 48%; height: 48%; top: 26%; left: 26%; animation-duration: 18s; border-color: rgba(82, 183, 136, 0.2); }
@keyframes spinRing {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.orbit-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 42%; height: 42%;
  background: radial-gradient(circle, rgba(45, 106, 79, 0.25) 0%, rgba(45, 106, 79, 0.05) 60%, transparent 80%);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px solid rgba(45, 106, 79, 0.2);
}
.core-kanji {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--jade-lt);
  line-height: 1;
}
.core-sub {
  font-size: 0.55rem;
  letter-spacing: 0.3em;
  color: rgba(245, 240, 232, 0.35);
}
.orbit-dot {
  position: absolute;
  width: 7px; height: 7px;
  background: var(--jade-lt);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--jade-lt);
}
.orbit-dot-n { top: -3.5px; left: 50%; transform: translateX(-50%); }
.orbit-dot-s { bottom: -3.5px; left: 50%; transform: translateX(-50%); }
.orbit-dot-e { right: -3.5px; top: 50%; transform: translateY(-50%); }
.orbit-dot-w { left: -3.5px; top: 50%; transform: translateY(-50%); }
.orbit-label {
  position: absolute;
  padding: 4px 8px;
  background: rgba(13, 27, 42, 0.7);
  border: 1px solid rgba(45, 106, 79, 0.2);
  border-radius: 4px;
  backdrop-filter: blur(4px);
}
.orbit-label-1 { top: -8px; left: 50%; transform: translateX(-50%); }
.orbit-label-2 { right: -10px; top: 50%; transform: translateY(-50%); }
.orbit-label-3 { bottom: -8px; left: 50%; transform: translateX(-50%); }
.orbit-label-4 { left: -10px; top: 50%; transform: translateY(-50%); }

/* ── Products Section ───────────────────────────────────────── */
.section-products { background: var(--ink); }
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--ink-2);
  border: 1px solid rgba(45, 106, 79, 0.18);
  border-radius: var(--radius-lg);
  padding: 30px 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--jade), var(--jade-lt));
  opacity: 0;
  transition: opacity var(--t);
}
.product-card:hover {
  border-color: rgba(45, 106, 79, 0.45);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.product-card:hover::before { opacity: 1; }
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
}
.badge-tech   { background: rgba(45, 106, 79, 0.15); color: var(--jade-lt); border: 1px solid rgba(45, 106, 79, 0.3); }
.badge-emb    { background: rgba(201, 168, 76, 0.12); color: var(--gold-lt); border: 1px solid rgba(201, 168, 76, 0.28); }
.badge-ai     { background: rgba(82, 183, 136, 0.12); color: var(--text-jade); border: 1px solid rgba(82, 183, 136, 0.25); }
.badge-sys    { background: rgba(245, 240, 232, 0.07); color: rgba(245, 240, 232, 0.5); border: 1px solid rgba(245, 240, 232, 0.15); }
.card-icon { font-size: 1.8rem; line-height: 1; }
.card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.card-desc {
  font-size: 0.85rem;
  font-weight: 300;
  color: rgba(245, 240, 232, 0.5);
  line-height: 1.78;
  flex: 1;
  margin-bottom: 20px;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.card-tags li {
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  background: rgba(45, 106, 79, 0.08);
  color: rgba(82, 183, 136, 0.75);
  border: 1px solid rgba(45, 106, 79, 0.15);
}
.card-footer {
  padding-top: 16px;
  border-top: 1px solid rgba(45, 106, 79, 0.1);
}
.card-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: rgba(245, 240, 232, 0.35);
  font-family: var(--font-mono);
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--jade-lt);
  flex-shrink: 0;
}
.status-dot-amber { background: var(--gold); }

/* ── Tech Pillars ───────────────────────────────────────────── */
.section-pillars { background: var(--ink-2); }
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.pillar-card {
  padding: 32px 24px;
  border: 1px solid rgba(45, 106, 79, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(13, 27, 42, 0.4);
  transition: border-color var(--t), background var(--t), transform var(--t);
}
.pillar-card:hover {
  border-color: rgba(45, 106, 79, 0.38);
  background: rgba(45, 106, 79, 0.05);
  transform: translateY(-3px);
}
.pillar-num {
  display: block;
  font-family: var(--font-em);
  font-size: 2.8rem;
  font-weight: 300;
  color: var(--jade);
  opacity: 0.5;
  line-height: 1;
  margin-bottom: 18px;
}
.pillar-title { font-size: 1rem; font-weight: 600; margin-bottom: 10px; }
.pillar-desc { font-size: 0.83rem; font-weight: 300; color: rgba(245, 240, 232, 0.45); line-height: 1.8; }
.pillar-line {
  width: 32px; height: 1px;
  background: var(--jade);
  margin-top: 20px;
  opacity: 0.4;
}

/* ── Quote Section ───────────────────────────────────────────── */
.section-quote {
  background: var(--ink);
  padding: var(--space-section) 0;
  position: relative;
  overflow: hidden;
}
.section-quote::before {
  content: '"';
  position: absolute;
  font-family: var(--font-em);
  font-size: 22rem;
  line-height: 1;
  color: rgba(45, 106, 79, 0.05);
  top: -60px; left: 40px;
  pointer-events: none;
  user-select: none;
}
.quote-block {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}
.quote-mark {
  font-family: var(--font-em);
  font-size: 4rem;
  color: var(--jade);
  opacity: 0.4;
  line-height: 1;
  margin-bottom: 24px;
}
.quote-text {
  font-family: var(--font-em);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 300;
  font-style: italic;
  line-height: 1.9;
  color: rgba(245, 240, 232, 0.8);
  margin-bottom: 28px;
}
.quote-text em { font-style: normal; color: var(--jade-lt); }
.quote-attr {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: rgba(245, 240, 232, 0.3);
}

/* ── Contact Section ──────────────────────────────────────────── */
.section-contact { background: var(--ink-2); }
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(48px, 8vw, 96px);
  align-items: start;
}
.contact-info .section-body { font-size: 0.9rem; margin-top: 16px; }
.contact-channels { display: flex; flex-direction: column; gap: 20px; margin-top: 36px; }
.contact-channel {
  display: flex;
  align-items: center;
  gap: 16px;
}
.channel-icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  border: 1px solid rgba(45, 106, 79, 0.3);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--jade-lt);
  background: rgba(45, 106, 79, 0.07);
}
.channel-label {
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  color: rgba(245, 240, 232, 0.35);
  margin-bottom: 3px;
}
.channel-value { font-size: 0.9rem; font-weight: 400; }

/* Form */
.contact-form-wrap { position: relative; }
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-label {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: rgba(245, 240, 232, 0.35);
}
.form-input {
  background: rgba(13, 27, 42, 0.7);
  border: 1px solid rgba(45, 106, 79, 0.2);
  border-radius: var(--radius);
  padding: 13px 16px;
  color: var(--paper);
  font-size: 0.9rem;
  transition: border-color var(--t-fast);
  width: 100%;
}
.form-input::placeholder { color: rgba(245, 240, 232, 0.2); }
.form-input:focus {
  outline: none;
  border-color: var(--jade-lt);
}
.form-textarea { min-height: 110px; resize: vertical; }
.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.form-note {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: rgba(245, 240, 232, 0.2);
}
.form-submit {
  padding: 13px 28px;
  font-size: 0.88rem;
}
/* Form success state */
.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 48px 24px;
  text-align: center;
  color: var(--jade-lt);
  border: 1px solid rgba(45, 106, 79, 0.3);
  border-radius: var(--radius-lg);
  background: rgba(45, 106, 79, 0.06);
}
.form-success p { font-size: 1rem; font-weight: 300; color: rgba(245, 240, 232, 0.7); }
.form-success.visible { display: flex; }

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--ink);
  border-top: 1px solid rgba(45, 106, 79, 0.1);
  padding: 48px 0 32px;
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(45, 106, 79, 0.08);
}
.footer-brand { display: flex; flex-direction: column; gap: 6px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper);
}
.footer-tagline { font-size: 0.8rem; color: rgba(245, 240, 232, 0.3); font-weight: 300; }
.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 0.82rem;
  color: rgba(245, 240, 232, 0.4);
  transition: color var(--t-fast);
}
.footer-nav a:hover { color: var(--jade-lt); }
.footer-bottom { padding-top: 28px; }
.footer-copy {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(245, 240, 232, 0.2);
  text-align: center;
}
.icp-row {
  text-align: center;
  padding: 12px 0 4px;
  border-top: 1px solid rgba(45, 106, 79, 0.08);
  margin-top: 4px;
}
.icp-row a {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: rgba(245, 240, 232, 0.22);
  transition: color var(--t-fast);
}
.icp-row a:hover { color: rgba(245, 240, 232, 0.5); }

/* ── Reveal animations ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .pillars-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: flex; }
  .phil-layout { grid-template-columns: 1fr; gap: 48px; }
  .phil-visual { display: none; }
  .contact-layout { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.6rem; }
  .section { padding: 72px 0; }
  .footer-top { flex-direction: column; align-items: flex-start; }
}

/* ── Focus visible ───────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--jade-lt);
  outline-offset: 3px;
  border-radius: var(--radius);
}