/* ============================================
   CERVI TRACKER — MARKETING SITE STYLES
   Visual DNA: calm, organic, glass-like, teal/sage
   ============================================ */

/* ---------- DESIGN TOKENS ---------- */
:root {
  /* Colors — derived from app's visual language */
  --c-primary: #2d8a7e;
  --c-primary-dark: #1a5c54;
  --c-primary-light: #3ba899;
  --c-primary-subtle: #e0f2ef;
  --c-accent: #40b4a6;

  --c-sage-50: #f4f9f7;
  --c-sage-100: #e8f0ee;
  --c-sage-200: #d0e1dc;
  --c-sage-300: #a8c8bf;
  --c-sage-400: #7aad9f;

  --c-dark: #1a1a2e;
  --c-dark-soft: #2a2a3e;

  --c-text: #2c3e3a;
  --c-text-muted: #5e7a73;
  --c-text-light: #8da5a0;
  --c-text-on-dark: #c5d8d3;
  --c-text-white: #f0f7f5;

  --c-bg: #f6f9f8;
  --c-bg-alt: #edf3f1;
  --c-bg-glass: rgba(255, 255, 255, 0.55);
  --c-bg-glass-strong: rgba(255, 255, 255, 0.75);
  --c-border-glass: rgba(255, 255, 255, 0.3);

  /* Typography */
  --ff-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --fs-base: 1rem;
  --fs-sm: 0.875rem;
  --fs-xs: 0.75rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.5rem;
  --fs-4xl: 3.25rem;
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --lh-tight: 1.2;
  --lh-body: 1.65;

  /* Spacing */
  --sp-xs: 0.5rem;
  --sp-sm: 1rem;
  --sp-md: 1.5rem;
  --sp-lg: 2.5rem;
  --sp-xl: 4rem;
  --sp-2xl: 6rem;
  --sp-section: 7rem;

  /* Layout */
  --max-width: 1140px;
  --header-h: 72px;

  /* Radius */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 26, 46, 0.08);
  --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.1);
  --shadow-xl: 0 16px 48px rgba(26, 26, 46, 0.12);
  --shadow-glass: 0 4px 24px rgba(26, 26, 46, 0.06), inset 0 1px 0 rgba(255,255,255,0.4);

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 200ms;
  --t-normal: 350ms;
  --t-slow: 600ms;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  color: var(--c-text);
  background-color: var(--c-bg);
  overflow-x: hidden;
}

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

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

ul, ol { list-style: none; }

/* ---------- UTILITY ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-md);
}

.section {
  padding: var(--sp-section) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--sp-xl);
}

.section-title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  color: var(--c-dark);
  margin-bottom: var(--sp-sm);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--fs-lg);
  color: var(--c-text-muted);
  line-height: var(--lh-body);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  font-family: var(--ff-body);
  font-weight: var(--fw-semibold);
  border: none;
  border-radius: var(--r-full);
  cursor: pointer;
  transition: all var(--t-normal) var(--ease);
  white-space: nowrap;
  text-decoration: none;
}

.btn-sm {
  font-size: var(--fs-sm);
  padding: 0.5rem 1.25rem;
}

.btn-lg {
  font-size: var(--fs-base);
  padding: 0.875rem 2rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 16px rgba(45, 138, 126, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(45, 138, 126, 0.4);
  color: white;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: var(--c-bg-glass);
  color: var(--c-primary-dark);
  border: 1.5px solid var(--c-sage-300);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: var(--c-primary-subtle);
  border-color: var(--c-primary);
  color: var(--c-primary-dark);
}

/* ---------- GLASS CARD ---------- */
.glass-card {
  background: var(--c-bg-glass-strong);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--c-border-glass);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-glass);
  padding: var(--sp-lg);
  transition: transform var(--t-normal) var(--ease), box-shadow var(--t-normal) var(--ease);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ---------- PHONE FRAME ---------- */
.phone-frame {
  position: relative;
  display: inline-block;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(0,0,0,0.04);
  background: #111;
  padding: 8px;
}

.phone-frame img {
  border-radius: calc(var(--r-xl) - 4px);
  display: block;
  width: 100%;
  height: auto;
}

.phone-frame--sm {
  max-width: 280px;
}

/* ---------- HEADER ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: background var(--t-normal) var(--ease), box-shadow var(--t-normal) var(--ease), backdrop-filter var(--t-normal) var(--ease);
}

.site-header.scrolled {
  background: rgba(246, 249, 248, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 8px rgba(26, 26, 46, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--sp-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--c-dark);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--r-md);
  object-fit: cover;
}

.logo-text {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  letter-spacing: -0.01em;
}

/* Desktop: nav is a fixed transparent bar aligned with the header.
   pointer-events:none lets clicks pass through to the header underneath;
   only nav-list items are interactive. */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  pointer-events: none;
  background: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
  pointer-events: auto;
}

.nav-link {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--c-text-muted);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--c-primary);
  border-radius: 1px;
  transition: width var(--t-normal) var(--ease);
}

.nav-link:hover {
  color: var(--c-primary-dark);
}

.nav-link:hover::after {
  width: 100%;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-shrink: 0;
}

.header-cta {
  flex-shrink: 0;
}

/* ---------- LANG TOGGLE ---------- */
.lang-toggle {
  display: flex;
  align-items: center;
  background: var(--c-sage-100);
  border: 1px solid var(--c-sage-200);
  border-radius: var(--r-full);
  padding: 3px;
  gap: 2px;
}

.lang-opt {
  font-family: var(--ff-body);
  font-size: 0.7rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  color: var(--c-text-muted);
  background: none;
  border: none;
  border-radius: var(--r-full);
  padding: 0.2rem 0.55rem;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
  line-height: 1.4;
}

.lang-opt:hover {
  color: var(--c-primary-dark);
}

.lang-opt.active {
  background: var(--c-primary);
  color: white;
  box-shadow: 0 1px 4px rgba(45, 138, 126, 0.3);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-dark);
  border-radius: 2px;
  transition: all var(--t-normal) var(--ease);
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + var(--sp-xl)) 0 var(--sp-xl);
  overflow: hidden;
  background: linear-gradient(170deg, var(--c-sage-100) 0%, var(--c-bg) 40%, var(--c-sage-50) 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orbFloat 20s ease-in-out infinite;
}

.hero-orb--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--c-primary-light), transparent 70%);
  top: -10%;
  right: -5%;
  animation-delay: 0s;
}

.hero-orb--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--c-sage-300), transparent 70%);
  bottom: -5%;
  left: -8%;
  animation-delay: -7s;
}

.hero-orb--3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #a0d2cc, transparent 70%);
  top: 40%;
  left: 30%;
  animation-delay: -14s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(20px, -30px) scale(1.05); }
  50% { transform: translate(-15px, 20px) scale(0.95); }
  75% { transform: translate(25px, 15px) scale(1.02); }
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: var(--sp-2xl);
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-title {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  line-height: 1.1;
  color: var(--c-dark);
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-md);
}

.hero-accent {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--fs-lg);
  color: var(--c-text-muted);
  line-height: var(--lh-body);
  max-width: 520px;
  margin-bottom: var(--sp-lg);
}

.hero-actions {
  display: flex;
  gap: var(--sp-sm);
  flex-wrap: wrap;
}

.hero-visual {
  flex-shrink: 0;
  position: relative;
}

.hero-visual .phone-frame {
  max-width: 320px;
  animation: heroPhoneFloat 6s ease-in-out infinite;
}

@keyframes heroPhoneFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---------- PROBLEM SECTION ---------- */
.section--problem {
  background: var(--c-bg);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}

.problem-card {
  text-align: left;
}

.problem-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--r-md);
  background: var(--c-primary-subtle);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-sm);
}

.problem-card h3 {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--c-dark);
  margin-bottom: var(--sp-xs);
}

.problem-card p {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
  line-height: var(--lh-body);
}

/* ---------- SOLUTION SECTION ---------- */
.section--solution {
  background: var(--c-bg-alt);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-md);
}

.solution-card {
  text-align: center;
}

.solution-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary-subtle) 0%, rgba(45, 138, 126, 0.12) 100%);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-sm);
}

.solution-card h3 {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--c-dark);
  margin-bottom: var(--sp-xs);
}

.solution-card p {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
}

/* ---------- FEATURES / HOW IT WORKS ---------- */
.section--features {
  background: var(--c-bg);
}

.feature-row {
  display: flex;
  align-items: center;
  gap: var(--sp-2xl);
  margin-bottom: var(--sp-2xl);
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-row--reverse {
  flex-direction: row-reverse;
}

.feature-text {
  flex: 1;
  min-width: 0;
}

.feature-label {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-primary);
  background: var(--c-primary-subtle);
  padding: 0.25rem 0.75rem;
  border-radius: var(--r-full);
  margin-bottom: var(--sp-sm);
}

.feature-title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--c-dark);
  margin-bottom: var(--sp-sm);
  line-height: var(--lh-tight);
}

.feature-text p {
  font-size: var(--fs-base);
  color: var(--c-text-muted);
  line-height: var(--lh-body);
}

.feature-visual {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
}

/* ---------- SIGNAL-FIRST SECTION ---------- */
.section--signal {
  background: linear-gradient(170deg, var(--c-dark) 0%, #1e2e3a 100%);
  color: var(--c-text-white);
}

.section--signal .section-title {
  color: white;
}

.signal-inner {
  max-width: 700px;
  margin: 0 auto;
}

.signal-content p {
  font-size: var(--fs-lg);
  color: var(--c-text-on-dark);
  margin-bottom: var(--sp-lg);
}

.signal-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.signal-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-sm);
  padding: var(--sp-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-md);
  backdrop-filter: blur(8px);
}

.signal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 4px;
}

.signal-dot--active {
  background: var(--c-accent);
  box-shadow: 0 0 12px rgba(64, 180, 166, 0.5);
}

.signal-dot--outcome {
  background: #e8c468;
  box-shadow: 0 0 12px rgba(232, 196, 104, 0.4);
}

.signal-dot--trend {
  background: #7ac4b8;
  box-shadow: 0 0 12px rgba(122, 196, 184, 0.4);
}

.signal-item strong {
  display: block;
  font-weight: var(--fw-semibold);
  color: white;
  margin-bottom: 0.25rem;
}

.signal-item span {
  font-size: var(--fs-sm);
  color: var(--c-text-on-dark);
  line-height: var(--lh-body);
}

/* ---------- CONNECTED SECTION ---------- */
.section--connected {
  background: var(--c-bg-alt);
}

.connected-visuals {
  display: flex;
  justify-content: center;
  gap: var(--sp-lg);
  flex-wrap: wrap;
}

/* ---------- REPORTS SECTION ---------- */
.section--reports {
  background: var(--c-bg);
  overflow: hidden;
}

.reports-inner {
  display: flex;
  align-items: center;
  gap: var(--sp-2xl);
}

.reports-content {
  flex: 1;
  min-width: 0;
}

.reports-content .section-title {
  text-align: left;
}

.reports-content > p {
  font-size: var(--fs-base);
  color: var(--c-text-muted);
  line-height: var(--lh-body);
  margin-bottom: var(--sp-lg);
}

.reports-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-lg);
}

.reports-list li {
  padding: var(--sp-sm) var(--sp-md);
  background: var(--c-bg-glass-strong);
  border: 1px solid var(--c-sage-200);
  border-radius: var(--r-md);
}

.reports-list strong {
  display: block;
  font-weight: var(--fw-semibold);
  color: var(--c-dark);
  margin-bottom: 0.125rem;
}

.reports-list span {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
}

.reports-note {
  font-size: var(--fs-sm);
  color: var(--c-text-light);
  font-style: italic;
}

.reports-visual {
  flex-shrink: 0;
}

.report-frame {
  max-width: 400px;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--c-sage-200);
  background: white;
}

.report-frame img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- WHY SECTION ---------- */
.section--why {
  background: var(--c-bg-alt);
}

.why-inner {
  text-align: center;
}

.why-inner .section-subtitle {
  max-width: 680px;
  margin: 0 auto var(--sp-xl);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
  text-align: left;
}

.why-card h3 {
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  color: var(--c-dark);
  margin-bottom: var(--sp-xs);
}

.why-card p {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
}

/* ---------- TRUST SECTION ---------- */
.section--trust {
  background: var(--c-bg);
  padding: var(--sp-xl) 0;
}

.trust-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.trust-inner .section-title {
  margin-bottom: var(--sp-lg);
}

.trust-content {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-sm);
  text-align: left;
  padding: var(--sp-sm) var(--sp-md);
  background: var(--c-sage-50);
  border-radius: var(--r-md);
  border: 1px solid var(--c-sage-200);
}

.trust-item svg {
  flex-shrink: 0;
  color: var(--c-primary);
  margin-top: 2px;
}

.trust-item p {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
  line-height: var(--lh-body);
}

/* ---------- CTA SECTION ---------- */
.section--cta {
  position: relative;
  padding: var(--sp-2xl) 0;
  overflow: hidden;
  background: linear-gradient(170deg, var(--c-sage-100) 0%, var(--c-primary-subtle) 50%, var(--c-sage-100) 100%);
}

.cta-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.cta-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.25;
}

.cta-orb--1 {
  width: 350px;
  height: 350px;
  background: var(--c-primary);
  top: -20%;
  right: -5%;
  animation: orbFloat 18s ease-in-out infinite;
}

.cta-orb--2 {
  width: 250px;
  height: 250px;
  background: var(--c-sage-400);
  bottom: -15%;
  left: -5%;
  animation: orbFloat 22s ease-in-out infinite reverse;
}

.cta-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-title {
  margin-bottom: var(--sp-sm);
}

.cta-subtitle {
  font-size: var(--fs-lg);
  color: var(--c-text-muted);
  margin-bottom: var(--sp-lg);
}

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--c-dark);
  color: var(--c-text-on-dark);
  padding: var(--sp-xl) 0 var(--sp-lg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-md);
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--r-sm);
  object-fit: cover;
}

.footer-name {
  font-weight: var(--fw-semibold);
  color: var(--c-text-white);
}

.footer-tagline {
  font-size: var(--fs-sm);
  color: var(--c-text-light);
}

.footer-nav {
  display: flex;
  gap: var(--sp-md);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  font-size: var(--fs-sm);
  color: var(--c-text-on-dark);
  opacity: 0.7;
  transition: opacity var(--t-fast) var(--ease);
}

.footer-nav a:hover {
  opacity: 1;
  color: var(--c-text-white);
}

.footer-copy {
  font-size: var(--fs-xs);
  color: var(--c-text-light);
  opacity: 0.5;
}

/* ---------- ANIMATIONS ---------- */
.anim-fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}

.anim-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- RESPONSIVE ---------- */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --fs-4xl: 2.5rem;
    --fs-3xl: 2rem;
    --sp-section: 5rem;
  }

  .hero-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--sp-xl);
  }

  .hero-subtitle {
    margin: 0 auto var(--sp-lg);
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual .phone-frame {
    max-width: 280px;
  }

  .feature-row,
  .feature-row--reverse {
    flex-direction: column;
    text-align: center;
    gap: var(--sp-lg);
  }

  .feature-text {
    order: 1;
  }

  .feature-visual {
    order: 2;
  }

  .reports-inner {
    flex-direction: column;
    text-align: center;
  }

  .reports-content .section-title {
    text-align: center;
  }

  .report-frame {
    max-width: 360px;
    margin: 0 auto;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --fs-4xl: 2rem;
    --fs-3xl: 1.75rem;
    --fs-xl: 1.25rem;
    --sp-section: 4rem;
    --sp-2xl: 3rem;
  }

  .header-cta {
    display: none;
  }

  /* Mobile: override desktop fixed-bar to full-screen overlay */
  .main-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: auto;          /* override desktop header-height */
    background: rgba(246, 249, 248, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: auto;  /* restore clicks for overlay */
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav.open .nav-list {
    flex-direction: column;
    gap: var(--sp-lg);
    pointer-events: auto;
  }

  .main-nav.open .nav-link {
    font-size: var(--fs-xl);
    color: var(--c-dark);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .problem-grid {
    grid-template-columns: 1fr;
  }

  .solution-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .why-grid {
    grid-template-columns: 1fr;
  }

  .connected-visuals {
    flex-direction: column;
    align-items: center;
  }

  .phone-frame--sm {
    max-width: 240px;
  }

  .hero-visual .phone-frame {
    max-width: 240px;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  :root {
    --fs-4xl: 1.75rem;
    --fs-3xl: 1.5rem;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-h) + var(--sp-lg));
    padding-bottom: var(--sp-lg);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    text-align: center;
  }
}