/* ================================
   CSS VARIABLES
================================ */
:root {
  --berkeley: #003262;
  --berkeley-light: #1a4a7a;
  --gold: #FDB515;
  --black: #111111;
  --dark: #1c1c1c;
  --gray-700: #444444;
  --gray-500: #777777;
  --gray-200: #e8e8e8;
  --gray-100: #f4f4f2;
  --white: #ffffff;
  --off-white: #fafaf8;

  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 7rem;

  --radius: 4px;
  --radius-lg: 10px;
  --transition: 0.2s ease;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 12px rgba(0,0,0,0.12), 0 12px 40px rgba(0,0,0,0.08);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--off-white);
  color: var(--dark);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

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

/* ================================
   TYPOGRAPHY
================================ */
.section__eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--berkeley);
  margin-bottom: 1rem;
}

.section__headline {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--black);
  margin-bottom: 1.5rem;
}

.section__body {
  font-size: 1.1rem;
  color: var(--gray-700);
  max-width: 640px;
  line-height: 1.75;
}

/* ================================
   BUTTONS
================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--berkeley);
  color: var(--white);
  border-color: var(--berkeley);
}
.btn--primary:hover {
  background: var(--berkeley-light);
  border-color: var(--berkeley-light);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--berkeley);
  border-color: var(--berkeley);
}
.btn--ghost:hover {
  background: var(--berkeley);
  color: var(--white);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--dark);
  border-color: var(--gray-200);
}
.btn--outline:hover {
  border-color: var(--berkeley);
  color: var(--berkeley);
}

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

/* ================================
   SECTIONS
================================ */
.section {
  padding: var(--spacing-xl) 0;
}

/* ================================
   PROGRESS BAR
================================ */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--berkeley);
  z-index: 200;
  transition: width 0.1s linear;
}

body.dark .progress-bar {
  background: #ffffff;
}

/* ================================
   HEADER
================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gray-200);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 2rem;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--black);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--gray-700);
  transition: color var(--transition);
}
.nav__link:hover { color: var(--berkeley); }

.nav__cta { flex-shrink: 0; }

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  transition: all var(--transition);
}

/* ================================
   HERO
================================ */
.hero {
  padding: var(--spacing-xl) 0;
  background: var(--white);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.hero__eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--berkeley);
  margin-bottom: 1.25rem;
}

.hero__headline {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  line-height: 1.1;
  color: var(--black);
  margin-bottom: 1.5rem;
}

.hero__sub {
  font-size: 1.15rem;
  color: var(--gray-700);
  line-height: 1.75;
  margin-bottom: 1.5rem;
  max-width: 520px;
}

.hero__trust {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gray-500);
  letter-spacing: 0.03em;
  margin-bottom: 2.5rem;
  padding-left: 1rem;
  border-left: 2px solid var(--gold);
}

.hero__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Hero visual */
.hero__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.hero__img-wrap {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gray-100);
  position: relative;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.hero__img-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  color: var(--gray-500);
  font-family: var(--font-serif);
  font-size: 1.5rem;
  text-align: center;
  line-height: 1.4;
  z-index: 0;
}

.hero__badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
}

.hero__badge-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.hero__badge-org {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--berkeley);
}

/* ================================
   STORY / ABOUT
================================ */
.story {
  background: var(--black);
  padding: 6rem 0;
}

.story__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 5rem;
  align-items: start;
}

.story__eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.25rem;
}

.story__headline {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 400;
  color: #ffffff;
  line-height: 1.2;
  margin-bottom: 2rem;
}

.story__body {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.story__body p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
}

.story__link {
  color: rgba(255,255,255,0.9);
  border-bottom: 1px solid rgba(255,255,255,0.3);
  transition: border-color var(--transition);
}
.story__link:hover { border-color: var(--gold); color: var(--gold); }

.story__right {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-top: 0.5rem;
}

.story__stat {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
}

.story__stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 3rem;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 0.4rem;
}

.story__stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.4;
}

.story__companies {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
}

.story__companies-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 1rem;
}

.story__companies-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.story__companies-row span {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.3rem 0.75rem;
  border-radius: 2px;
}

/* Dark mode story (already dark, just tweak) */
body.dark .story { background: #050505; }

@media (max-width: 900px) {
  .story__inner { grid-template-columns: 1fr; gap: 3rem; }
}

/* ================================
   LOGOS STRIP (legacy, hidden)
================================ */
.logos {
  padding: 4rem 0;
  background: var(--black);
}

.logos__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  text-align: center;
  margin-bottom: 2.5rem;
}

.logos__row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logos__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.07);
  transition: all var(--transition);
  min-width: 140px;
}

.logos__item:hover {
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}

.logos__img {
  height: 26px;
  width: auto;
  max-width: 100px;
  object-fit: contain;
  filter: grayscale(100%) brightness(10);
}

.logos__text {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #ffffff;
  text-transform: uppercase;
}

/* Dark mode logos */
body.dark .logos {
  background: #0a0a0a;
  border-top: 1px solid #2a2a2a;
  border-bottom: 1px solid #2a2a2a;
}
body.dark .logos__label { color: rgba(255,255,255,0.3); }
body.dark .logos__item {
  background: #1a1a1a;
  border-color: #2a2a2a;
}
body.dark .logos__item:hover {
  border-color: #ffffff;
  background: #222222;
}
body.dark .logos__img {
  filter: grayscale(100%) brightness(10);
}
body.dark .logos__text { color: #cccccc; }

/* ================================
   PROBLEM
================================ */
.problem {
  background: var(--gray-100);
}

.problem__body {
  margin-bottom: 3rem;
}

/* ================================
   PROBLEM BLOCKS
================================ */
.problem__blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

.problem__block--dark {
  background: var(--black);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.problem__block-num {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
}

.problem__block-text {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.85);
}

.problem__stakes {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  justify-content: center;
}

.problem__stake {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.problem__stake-marker {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-500);
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.problem__stake p {
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.65;
}

.problem__stake--emphasis {
  margin-top: 0.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--gray-200);
}

.problem__stake--emphasis .problem__stake-marker {
  color: var(--black);
  font-size: 1.1rem;
}

.problem__stake--emphasis p {
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
}

/* Dark mode problem */
body.dark .problem__block--dark {
  background: #1a1a1a;
  border: 1px solid #2a2a2a;
}
body.dark .problem__stake p { color: #999999; }
body.dark .problem__stake--emphasis p { color: #f5f5f5; }
body.dark .problem__stake--emphasis { border-top-color: #2a2a2a; }

@media (max-width: 768px) {
  .problem__blocks { grid-template-columns: 1fr; }
}

/* ================================
   CARDS GRID
================================ */
.cards { display: grid; gap: 1.5rem; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

/* Problem cards */
.card--problem {
  background: var(--white);
  border: 1px solid var(--gray-200);
}
.card--problem:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.card--problem .card__icon {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--gray-200);
  margin-bottom: 1rem;
}
.card--problem .card__text {
  font-size: 1rem;
  font-weight: 500;
  color: var(--dark);
  line-height: 1.5;
}

/* Service cards */
.card--service {
  background: var(--white);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.card--service:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--berkeley);
}
.card__number {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold);
}
.card__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--black);
  line-height: 1.3;
}
.card__text {
  font-size: 0.9rem;
  color: var(--gray-700);
  line-height: 1.65;
}

/* ================================
   SERVICES / CYCLE
================================ */
.services {
  background: var(--white);
}

.cycle {
  display: flex;
  flex-direction: column;
  max-width: 780px;
}

.cycle__step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.5rem;
  padding: 2rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: var(--off-white);
  transition: box-shadow var(--transition), transform var(--transition);
}

.cycle__step:hover {
  box-shadow: var(--shadow-hover);
  transform: translateX(4px);
}

.cycle__step--free {
  border-color: var(--gold);
  background: var(--white);
}

.cycle__title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.cycle__free-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #111111;
  background: var(--gold);
  padding: 0.2rem 0.65rem;
  border-radius: 2px;
}

body.dark .cycle__step--free {
  background: #1a1500;
  border-color: var(--gold);
}

.cycle__step--last {
  border-color: var(--black);
  background: var(--black);
}

.cycle__step--last .cycle__num { color: var(--gold); }
.cycle__step--last .cycle__title { color: #ffffff; }
.cycle__step--last .cycle__text { color: rgba(255,255,255,0.65); }
.cycle__step--last .cycle__output { color: rgba(255,255,255,0.35); border-top-color: rgba(255,255,255,0.1); }

.cycle__num {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--gray-200);
  line-height: 1;
  padding-top: 0.2rem;
}

.cycle__body {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.cycle__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--black);
}

.cycle__text {
  font-size: 0.9rem;
  color: var(--gray-700);
  line-height: 1.7;
}

.cycle__output {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-500);
  padding-top: 0.6rem;
  border-top: 1px solid var(--gray-200);
  margin-top: 0.25rem;
}

.cycle__arrow {
  text-align: left;
  padding-left: 1.5rem;
  color: var(--gray-200);
  font-size: 1.25rem;
  line-height: 1;
  margin: 0.4rem 0;
}

/* Dark mode cycle */
body.dark .cycle__step {
  background: #1a1a1a;
  border-color: #2a2a2a;
}
body.dark .cycle__step--last {
  background: #050505;
  border-color: #333333;
}
body.dark .cycle__title { color: #f5f5f5; }
body.dark .cycle__text { color: #999999; }
body.dark .cycle__output { color: #555555; border-top-color: #2a2a2a; }
body.dark .cycle__num { color: #2a2a2a; }
body.dark .cycle__arrow { color: #2a2a2a; }

/* ================================
   PRODUCTS
================================ */
.products {
  background: var(--gray-100);
}

.products__intro {
  margin-bottom: 3rem;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.product-card__freq {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--berkeley);
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 2px;
  align-self: flex-start;
}

.product-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--black);
  line-height: 1.3;
}

.product-card__desc {
  font-size: 0.875rem;
  color: var(--gray-700);
  line-height: 1.7;
  flex: 1;
}

.product-card--featured {
  border-color: var(--black);
  border-width: 2px;
}

.product-card__label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: -0.25rem;
}

.product-card__includes {
  margin-top: 0.25rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--gray-200);
}

.product-card__includes-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 0.6rem;
}

.product-card__includes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.product-card__includes-list li {
  font-size: 0.85rem;
  color: var(--gray-700);
  line-height: 1.55;
  padding-left: 1.1rem;
  position: relative;
}

.product-card__includes-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--black);
  font-size: 0.75rem;
}

.product-card__pricing {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem;
  background: var(--gray-100);
  border-radius: var(--radius);
  margin-top: 0.25rem;
}

.product-card__price-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.product-card__price-free {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--black);
  background: var(--gold);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
}

.product-card__price-main {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--black);
  line-height: 1;
}

.product-card__price-per {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--gray-500);
}

.product-card__price-note {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: 500;
}

body.dark .product-card__pricing {
  background: #222222;
}
body.dark .product-card__price-main { color: #ffffff; }
body.dark .product-card__price-free { color: #111111; }

body.dark .product-card--featured { border-color: #ffffff; }

.product-card--bonus {
  border-color: var(--gold);
  border-width: 2px;
  background: #fffdf5;
}

.product-card__label--bonus {
  color: #111111;
  background: var(--gold);
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 2px;
}

body.dark .product-card--bonus {
  background: #1a1500;
  border-color: var(--gold);
}

.product-card--ai {
  background: var(--black);
  border-color: var(--black);
}

.product-card--ai .product-card__label { color: var(--gold); }
.product-card--ai .product-card__freq { color: rgba(255,255,255,0.4); }
.product-card--ai .product-card__title { color: #ffffff; }
.product-card--ai .product-card__desc { color: rgba(255,255,255,0.65); }
.product-card--ai .product-card__includes { border-top-color: rgba(255,255,255,0.1); }
.product-card--ai .product-card__includes-label { color: rgba(255,255,255,0.35); }
.product-card--ai .product-card__includes-list li { color: rgba(255,255,255,0.65); }
.product-card--ai .product-card__includes-list li::before { color: rgba(255,255,255,0.5); }
.product-card--ai .product-card__pricing { background: rgba(255,255,255,0.05); }
.product-card--ai .product-card__price-main { color: #ffffff; }
.product-card--ai .product-card__price-note { color: rgba(255,255,255,0.4); }

.product-card__ai-stack {
  margin-top: 0.25rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.product-card__ai-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.product-card__ai-tools span {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.5);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
}

body.dark .product-card--ai {
  background: #050505;
  border-color: #333333;
}
body.dark .product-card__includes { border-top-color: #2a2a2a; }
body.dark .product-card__includes-list li { color: #999999; }
body.dark .product-card__includes-list li::before { color: #ffffff; }

.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin-top: 0.25rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--gray-200);
}

.product-card__tags li {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
}

/* Dark mode products */
body.dark .products { background: #0d0d0d; }
body.dark .product-card {
  background: #1a1a1a;
  border-color: #2a2a2a;
}
body.dark .product-card__freq {
  background: #ffffff;
  color: #111111;
}
body.dark .product-card__title { color: #f5f5f5; }
body.dark .product-card__desc { color: #999999; }
body.dark .product-card__tags { border-top-color: #2a2a2a; }
body.dark .product-card__tags li {
  color: #666666;
  background: #222222;
}

@media (max-width: 1024px) {
  .products__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .products__grid { grid-template-columns: 1fr; }
}

/* ================================
   METHOD
================================ */
.method {
  background: var(--berkeley);
  color: var(--white);
}

.method .section__headline {
  color: var(--white);
}

.method__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 4rem;
}

.method__step {
  border-top: 2px solid rgba(255,255,255,0.2);
  padding-top: 1.5rem;
}

.method__step-num {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 1rem;
}

.method__step-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.method__step-text {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.65;
}

.method__quote {
  max-width: 680px;
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-style: italic;
  font-weight: 400;
  color: var(--white);
  line-height: 1.4;
  padding-left: 1.5rem;
  border-left: 3px solid var(--gold);
}

/* ================================
   BLOG
================================ */
.blog { background: var(--white); }

.blog__intro { margin-bottom: 3rem; }

.blog__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.blog-card {
  background: var(--off-white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.blog-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.blog-card__tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--berkeley);
  background: rgba(0,50,98,0.06);
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
  align-self: flex-start;
}

.blog-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  line-height: 1.4;
  flex: 1;
}

.blog-card__desc {
  font-size: 0.875rem;
  color: var(--gray-700);
  line-height: 1.65;
}

.blog-card__status {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-top: 0.25rem;
}

.blog-card--coming {
  opacity: 0.8;
}

.blog__follow {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-200);
}

.blog__follow-text {
  font-size: 0.9rem;
  color: var(--gray-700);
}

/* Dark mode blog */
body.dark .blog { background: #141414; }
body.dark .blog-card {
  background: #1a1a1a;
  border-color: #2a2a2a;
}
body.dark .blog-card__tag {
  color: #aaaaaa;
  background: rgba(255,255,255,0.06);
}
body.dark .blog-card__title { color: #f5f5f5; }
body.dark .blog-card__desc { color: #999999; }
body.dark .blog-card__status { color: #555555; }
body.dark .blog__follow { border-top-color: #2a2a2a; }
body.dark .blog__follow-text { color: #777777; }

@media (max-width: 768px) {
  .blog__grid { grid-template-columns: 1fr; }
  .blog__follow { flex-direction: column; align-items: flex-start; }
}

/* ================================
   PROOF
================================ */
.proof {
  background: var(--off-white);
}

.card--proof {
  background: var(--white);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.card--proof:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.proof__tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--berkeley);
  background: rgba(0, 50, 98, 0.06);
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  align-self: flex-start;
}

/* ================================
   BERKELEY
================================ */
.berkeley {
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.berkeley__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.berkeley__text .section__body {
  margin-bottom: 2rem;
}

.berkeley__img-wrap {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gray-100);
  position: relative;
  box-shadow: var(--shadow-hover);
}

.berkeley__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.berkeley__img-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--berkeley) 0%, var(--berkeley-light) 100%);
}

.berkeley__fallback-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.75rem;
  padding: 2rem;
}

.berkeley__fallback-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--white);
  line-height: 1.3;
}

.berkeley__fallback-source {
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
}

/* ================================
   AUDIENCE
================================ */
.audience {
  background: var(--gray-100);
}

.audience__list {
  list-style: none;
  margin-bottom: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.audience__list li {
  font-size: 1.1rem;
  color: var(--dark);
  padding-left: 1.5rem;
  position: relative;
}

.audience__list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--berkeley);
  font-weight: 600;
}

.audience__emphasis {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: var(--black);
  line-height: 1.4;
  max-width: 560px;
  padding-left: 1.25rem;
  border-left: 3px solid var(--gold);
}

/* ================================
   OFFERS
================================ */
.offers {
  background: var(--white);
}

.card--offer {
  background: var(--off-white);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card--offer:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.card--offer-featured {
  background: var(--white);
  border: 2px solid var(--berkeley);
}

.offer__duration {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.offer__output {
  font-size: 0.8rem;
  color: var(--gray-500);
  line-height: 1.6;
  padding-top: 0.25rem;
  border-top: 1px solid var(--gray-200);
  margin-top: auto;
}

.card--offer .btn {
  margin-top: 0.5rem;
  align-self: flex-start;
}

/* ================================
   FINAL CTA
================================ */
.cta-final {
  background: var(--black);
  text-align: center;
}

.cta-final__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.cta-final__headline {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.15;
}

.cta-final__body {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.6);
  max-width: 480px;
  line-height: 1.7;
}

.cta-final__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 1rem;
}

.cta-final .btn--primary {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.cta-final .btn--primary:hover {
  background: var(--gray-100);
  border-color: var(--gray-100);
}

.cta-final .btn--ghost {
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}
.cta-final .btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
}

/* ================================
   FOOTER
================================ */
.footer {
  background: var(--black);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 2rem 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__name {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

.footer__links {
  display: flex;
  gap: 2rem;
}

.footer__links a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--white); }

/* ================================
   THEME TOGGLE
================================ */
.theme-toggle {
  background: none;
  border: 1px solid var(--gray-200);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  color: var(--dark);
  transition: all var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover {
  border-color: var(--berkeley);
  color: var(--berkeley);
}

/* ================================
   DARK MODE
================================ */
body.dark {
  --black: #f5f5f5;
  --dark: #e0e0e0;
  --gray-700: #aaaaaa;
  --gray-500: #666666;
  --gray-200: #2a2a2a;
  --gray-100: #1a1a1a;
  --white: #141414;
  --off-white: #0d0d0d;
  --gold: #FDB515;
  /* Berkeley blue replaced with white/neutral in dark mode */
  --berkeley: #ffffff;
  --berkeley-light: #dddddd;
}

body.dark { background: #0d0d0d; color: #e0e0e0; }

body.dark .header {
  background: rgba(10, 10, 10, 0.96);
  border-bottom-color: #2a2a2a;
}

body.dark .logo { color: #f5f5f5; }

body.dark .nav__link { color: #aaaaaa; }
body.dark .nav__link:hover { color: #ffffff; }

/* Hero */
body.dark .hero { background: #141414; }
body.dark .hero__eyebrow { color: #aaaaaa; }
body.dark .hero__headline { color: #f5f5f5; }
body.dark .hero__sub { color: #aaaaaa; }
body.dark .hero__trust { color: #777777; border-left-color: var(--gold); }
body.dark .hero__badge { background: #1e1e1e; border-color: #2a2a2a; }
body.dark .hero__badge-label { color: #666666; }
body.dark .hero__badge-org { color: #ffffff; }

/* Buttons in dark mode */
body.dark .btn--primary {
  background: #ffffff;
  color: #111111;
  border-color: #ffffff;
}
body.dark .btn--primary:hover {
  background: #dddddd;
  border-color: #dddddd;
}
body.dark .btn--ghost {
  color: #ffffff;
  border-color: #ffffff;
}
body.dark .btn--ghost:hover {
  background: #ffffff;
  color: #111111;
}
body.dark .btn--outline {
  color: #aaaaaa;
  border-color: #2a2a2a;
}
body.dark .btn--outline:hover {
  border-color: #ffffff;
  color: #ffffff;
}

/* Sections */
body.dark .problem { background: #0d0d0d; }
body.dark .services { background: #141414; }
body.dark .proof { background: #0d0d0d; }
body.dark .berkeley { background: #141414; border-color: #2a2a2a; }
body.dark .audience { background: #0d0d0d; }
body.dark .offers { background: #141414; }

/* Section text */
body.dark .section__headline { color: #f5f5f5; }
body.dark .section__eyebrow { color: #aaaaaa; }
body.dark .section__body { color: #aaaaaa; }

/* Cards */
body.dark .card--problem,
body.dark .card--service,
body.dark .card--proof {
  background: #1a1a1a;
  border-color: #2a2a2a;
}
body.dark .card__title { color: #f5f5f5; }
body.dark .card__text { color: #999999; }
body.dark .card__number { color: var(--gold); }
body.dark .card--problem .card__icon { color: #333333; }

/* Proof tags */
body.dark .proof__tag {
  color: #aaaaaa;
  background: rgba(255,255,255,0.06);
}

/* Method section */
body.dark .method {
  background: #0a0a0a;
  border-top: 1px solid #2a2a2a;
}
body.dark .method .section__headline { color: #f5f5f5; }
body.dark .method__step { border-top-color: rgba(255,255,255,0.12); }
body.dark .method__step-title { color: #f5f5f5; }
body.dark .method__step-text { color: rgba(255,255,255,0.5); }
body.dark .method__quote { color: #f5f5f5; border-left-color: var(--gold); }

/* Berkeley section */
body.dark .berkeley__fallback-inner { background: none; }
body.dark .berkeley__img-fallback {
  background: linear-gradient(135deg, #1a1a1a 0%, #111111 100%);
}
body.dark .berkeley__fallback-title { color: #f5f5f5; }
body.dark .berkeley__fallback-source { color: #666666; }

/* Audience */
body.dark .audience__list li { color: #cccccc; }
body.dark .audience__list li::before { color: #ffffff; }
body.dark .audience__emphasis { color: #f5f5f5; border-left-color: var(--gold); }

/* Offers */
body.dark .card--offer {
  background: #1a1a1a;
  border-color: #2a2a2a;
}
body.dark .card--offer-featured {
  background: #1e1e1e;
  border-color: #ffffff;
}
body.dark .offer__duration { color: #666666; }
body.dark .offer__output { color: #666666; border-top-color: #2a2a2a; }

/* CTA final stays dark — already dark, just tweak */
body.dark .cta-final { background: #050505; }

/* Footer */
body.dark .footer {
  background: #050505;
  border-top-color: #1a1a1a;
}
body.dark .footer__name { color: rgba(255,255,255,0.3); }
body.dark .footer__links a { color: rgba(255,255,255,0.4); }
body.dark .footer__links a:hover { color: #ffffff; }

/* Toggle button */
body.dark .theme-toggle {
  border-color: #333333;
  color: #e0e0e0;
}
body.dark .theme-toggle:hover {
  border-color: #ffffff;
  color: #ffffff;
}

/* ================================
   MOBILE MENU
================================ */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    z-index: 99;
  }

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

  .nav__link { font-size: 1.25rem; }

  .nav__cta { display: none; }

  .burger { display: flex; }
}

/* ================================
   RESPONSIVE
================================ */
@media (max-width: 1024px) {
  .cards--4 { grid-template-columns: repeat(2, 1fr); }
  .method__steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 4rem;
    --spacing-lg: 2.5rem;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero__visual { order: -1; }

  .hero__img-wrap {
    max-width: 280px;
    aspect-ratio: 1/1;
    border-radius: 50%;
    margin: 0 auto;
  }

  .hero__badge { display: none; }

  .cards--3 { grid-template-columns: 1fr; }
  .cards--4 { grid-template-columns: 1fr; }

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

  .berkeley__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__btns { flex-direction: column; }
  .hero__btns .btn { width: 100%; text-align: center; }

  .cta-final__btns { flex-direction: column; align-items: stretch; }
  .cta-final__btns .btn { text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 1.25rem; }
}