/* ==========================================================
   AVICENNA — iteration seven
   Recreation of bymonolog.com design language
   ========================================================== */

:root {
  /* Swatches (lifted from reference token system) */
  --beige-100: #e8e8e3;
  --beige-150: #fafaf9;
  --beige-200: #ddddd5;
  --beige-300: #d1d1c7;
  --beige-400: #bfbfb1;
  --beige-600: #8c8c73;
  --black-50:  #938f8a;
  --black-100: #6b645c;
  --black-200: #524d47;
  --black-300: #393632;
  --black-400: #080807;
  --card-bg:   #181715;
  --faq-bg:    #26211c;
  --red:       #f02c27;

  /* Type */
  --font-sans: "Instrument Sans", Arial, sans-serif;
  --font-display: "Archivo Black", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --font-serif: "Instrument Serif", Georgia, serif;

  --fs-body: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --fs-small: clamp(0.875rem, 0.85rem + 0.15vw, 1rem);
  --fs-mono: clamp(0.65rem, 0.62rem + 0.15vw, 0.78rem);
  --fs-h3: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  --fs-big: clamp(1.9rem, 1.1rem + 2.6vw, 3.4rem);
  --fs-list: clamp(2.2rem, 1.4rem + 3.4vw, 4.4rem);
  --fs-display: clamp(3rem, 11.5vw, 11rem);

  --margin: clamp(0.75rem, 2vw, 1.75rem);
  --section: clamp(4rem, 8vw, 7rem);

  --ease: cubic-bezier(0.83, 0, 0.17, 1);
  --ease-out: cubic-bezier(0.2, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.3;
  background: var(--black-400);
  color: var(--beige-100);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--beige-300); color: var(--black-400); }

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul { list-style: none; }

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.02em;
}

.display {
  font-family: var(--font-display);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 0.9;
}

/* ---------- Grain ---------- */
.grain {
  position: fixed;
  inset: -100%;
  z-index: 2000;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.055;
  animation: grain 0.9s steps(4) infinite;
}
@keyframes grain {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2%, 3%); }
  50% { transform: translate(3%, -2%); }
  75% { transform: translate(-3%, -3%); }
  100% { transform: translate(2%, 2%); }
}

/* ---------- Reveal helpers ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(2.5rem);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.fade-up.in-view { opacity: 1; transform: none; }

/* ==========================================================
   HEADER
   ========================================================== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem var(--margin);
}

.header_logo img { height: 1.35rem; width: auto; }

.header_nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 1.6rem;
}
.header_nav a {
  color: var(--beige-150);
  transition: opacity 0.3s;
}
.header_nav a:hover { opacity: 0.6; }

.header_actions { display: flex; align-items: center; gap: 0.5rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--beige-150);
  color: var(--black-400);
  padding: 0.55rem 0.6rem 0.55rem 1rem;
  border-radius: 0.15rem;
  font-weight: 500;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
}
.btn_icon {
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--black-400);
  color: var(--beige-150);
  border-radius: 0.12rem;
  transition: inherit;
}
.btn:hover { background: var(--red); color: var(--beige-150); }
.btn:hover .btn_icon { background: var(--beige-150); color: var(--red); }

.btn-xl {
  font-size: clamp(1.3rem, 1rem + 1.6vw, 2.2rem);
  padding: 0.9rem 1rem 0.9rem 1.6rem;
  gap: 1.1rem;
  border-width: 0.2rem;
  outline: 0.35rem solid var(--beige-150);
  outline-offset: 0;
}
.btn-xl .btn_icon { width: 2.6rem; height: 2.6rem; }

/* Header on light sections */
.header.on-light .header_nav a { color: var(--black-400); }
.header.on-light .btn { background: var(--beige-150); color: var(--black-400); box-shadow: 0 0 0 1px rgba(8,8,7,0.12); }
.header.on-light .btn:hover { background: var(--red); color: var(--beige-150); }

/* ==========================================================
   HERO
   ========================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--beige-100);
  color: var(--black-400);
  overflow: hidden;
}

.hero_center {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1.6rem;
  padding: 7rem var(--margin) 2rem;
}

.hero_globe {
  color: var(--black-200);
  animation: spinY 7s linear infinite;
}
@keyframes spinY {
  from { transform: rotateY(0deg); }
  to { transform: rotateY(360deg); }
}

.hero_lead, .hero_sub { font-size: var(--fs-body); }
.hero_sub { color: var(--black-100); }

.hero_wordmark {
  padding: 0 1.2vw;
  line-height: 0;
}
.hero_wordmark img {
  width: 100%;
  height: auto;
  transform: translateY(4%);
}

/* ==========================================================
   MANIFESTO
   ========================================================== */
.manifesto {
  background: var(--black-400);
  padding: var(--section) var(--margin);
}

.manifesto_grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}

/* Slider controls (shared) */
.slider_controls {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.2rem;
  max-width: 30rem;
  margin-bottom: 3.2rem;
}
.slider_arrows { display: flex; gap: 1rem; }
.slider_arrow {
  font-size: 1.4rem;
  line-height: 1;
  transition: opacity 0.3s, transform 0.3s var(--ease-out);
}
.slider_arrow:hover { opacity: 0.6; transform: translateX(2px); }
.slider_track {
  position: relative;
  height: 1px;
  background: var(--black-300);
}
.slider_progress {
  position: absolute;
  inset: 0 auto 0 0;
  width: 50%;
  background: var(--beige-100);
  transition: width 0.6s var(--ease);
}
.slider_counter { color: var(--black-50); }

.stat_slides { position: relative; }
.stat_slide {
  position: absolute;
  inset: 0 auto auto 0;
  opacity: 0;
  transform: translateY(0.8rem);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
  pointer-events: none;
}
.stat_slide.is-active {
  position: relative;
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.stat_number {
  font-size: clamp(2.6rem, 2rem + 2.4vw, 4.2rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.stat_caption { color: var(--black-50); }

.manifesto_text {
  font-size: var(--fs-big);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin-bottom: 2.2rem;
}
.manifesto_text .w { opacity: 0.16; transition: opacity 0.35s linear; }
.manifesto_text .w.on { opacity: 1; }

.manifesto_founder {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-top: 3.5rem;
  color: var(--black-50);
}
.founder_avatar { width: 3rem; height: 3rem; border-radius: 50%; }
.founder_name { color: var(--beige-100); font-weight: 500; }
.founder_role { color: var(--beige-400); }

/* ---------- Brands ---------- */
.brands {
  margin-top: var(--section);
  padding-top: 2.4rem;
  border-top: 1px dotted var(--black-300);
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(2rem, 6vw, 6rem);
}
.brands_label, .services_label {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 500;
}
.dot {
  width: 0.7rem; height: 0.7rem;
  border-radius: 50%;
  background: var(--black-50);
}
.brands_grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.brand_cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 2.4rem;
  min-height: 15rem;
  padding: 2rem 1rem 0.8rem;
  border-bottom: 1px dotted var(--black-300);
}
.brand_cell:nth-child(n+5) { border-bottom: none; }
.brand_logo {
  flex: 1;
  display: flex;
  align-items: center;
  color: var(--beige-200);
}
.brand_logo--bold { font-weight: 600; font-size: 1.7rem; letter-spacing: -0.02em; }
.brand_logo--serif { font-family: var(--font-serif); font-size: 2rem; }
.brand_logo--wide { font-weight: 600; font-size: 1.4rem; letter-spacing: 0.35em; }
.brand_logo--big { font-family: var(--font-display); font-size: 3.2rem; }
.brand_name { color: var(--black-100); }

/* ==========================================================
   GAP
   ========================================================== */
.gap {
  background: var(--black-400);
  padding: var(--section) 0 var(--section);
  overflow: hidden;
}
.gap_stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: clamp(30rem, 90vh, 56rem);
}
.gap_media {
  width: clamp(14rem, 24vw, 21rem);
  overflow: hidden;
}
.gap_media img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  transform: scale(1.15);
  will-change: transform;
}
.gap_heading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  font-size: var(--fs-display);
  color: var(--beige-100);
}
.gap_line { display: block; }
.gap_copy {
  max-width: 34rem;
  margin: clamp(3rem, 8vh, 6rem) auto 0;
  padding: 0 var(--margin);
  text-align: center;
}

/* ==========================================================
   WORKS
   ========================================================== */
.works {
  background: var(--beige-200);
  color: var(--black-400);
  padding: var(--section) var(--margin);
}
.work_row {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: clamp(2rem, 4vw, 3.5rem) 0;
  border-bottom: 1px dotted var(--black-50);
  align-items: start;
}
.work_row:first-child { padding-top: 0; }
.work_media {
  overflow: hidden;
  border-radius: 0.15rem;
}
.work_media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  transition: transform 1s var(--ease-out);
}
.work_row:hover .work_media img { transform: scale(1.04); }

.work_meta {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.work_tag {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--black-200);
  margin-bottom: 2rem;
}
.tag_line { width: 1.6rem; height: 1px; background: var(--black-200); }
.tag_index {
  border: 1px solid var(--black-200);
  padding: 0.1rem 0.4rem;
  border-radius: 0.12rem;
}
.work_title {
  font-size: var(--fs-h3);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.work_desc { color: var(--black-100); max-width: 28rem; }
.work_stat { margin-top: auto; padding-top: 3rem; }
.stat_chip {
  display: inline-block;
  background: var(--beige-400);
  border-radius: 0.25rem;
  padding: 0.25rem 0.7rem;
  font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0.9rem;
}
.stat_note { font-weight: 500; }

.work_all {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: clamp(2rem, 4vw, 3.5rem) 0 0;
  transition: opacity 0.3s;
}
.work_all:hover { opacity: 0.6; }
.work_all_num { font-size: clamp(3rem, 8vw, 7rem); }
.work_all_label { font-size: var(--fs-h3); font-weight: 500; letter-spacing: -0.02em; }

/* ==========================================================
   SERVICES + TESTIMONIALS
   ========================================================== */
/* ==========================================================
   CASE STUDY
   ========================================================== */
.case {
  background: var(--black-400);
  padding: var(--section) var(--margin);
}
.accent { color: var(--red); }

/* Big centered statement */
.case_intro {
  text-align: center;
  max-width: 54rem;
  margin: 0 auto clamp(3.5rem, 7vw, 6rem);
}
.case_intro_text {
  font-size: clamp(1.4rem, 1.1rem + 1.6vw, 2.6rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.12;
  color: var(--beige-100);
}
.case_intro_num {
  font-size: clamp(3.2rem, 13vw, 11rem);
  line-height: 0.9;
  color: var(--beige-100);
  margin: clamp(0.5rem, 1.2vw, 1.2rem) 0;
}

/* Challenge + how we built it, side by side */
.case_grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}
.case_title {
  font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.6rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 1.4rem;
}
.case_lead {
  font-size: clamp(1.1rem, 1rem + 0.6vw, 1.4rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.case_lead em { font-style: italic; color: var(--red); }

/* Small stats under the challenge */
.case_stats {
  margin-top: clamp(1.8rem, 3vw, 2.6rem);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.case_stats li {
  font-size: var(--fs-small);
  color: var(--black-50);
}
.case_stat_num {
  color: var(--beige-100);
  font-weight: 500;
}

/* Pillars */
.case_pillars { display: flex; flex-direction: column; gap: clamp(1.8rem, 3vw, 2.6rem); }
.case_pillar {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2.5rem);
}
.case_pillar_num { color: var(--red); padding-top: 0.4rem; }
.case_pillar_body h3 {
  font-size: clamp(1.35rem, 1.1rem + 1.1vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1rem;
}
.case_pillar_body p { color: var(--black-50); max-width: 42rem; }

.services {
  background: var(--black-400);
  padding: var(--section) var(--margin);
}
.services_head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem 3rem;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}
.services_intro {
  max-width: 26rem;
  color: var(--black-50);
  font-size: var(--fs-body);
}

.service_row {
  display: grid;
  grid-template-columns: 4rem minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(1rem, 4vw, 4rem);
  align-items: baseline;
  padding: clamp(1.6rem, 2.6vw, 2.4rem) 0;
  border-top: 1px dotted var(--black-300);
  transition: padding-left 0.4s var(--ease), color 0.4s var(--ease);
}
.services_list .service_row:last-child { border-bottom: 1px dotted var(--black-300); }
.service_row:hover { padding-left: clamp(0.5rem, 1.5vw, 1.5rem); }

.service_num { color: var(--black-50); padding-top: 0.5rem; }
.service_title {
  font-size: clamp(1.5rem, 1.1rem + 1.8vw, 2.6rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--beige-100);
}
.service_desc {
  color: var(--black-50);
  max-width: 34rem;
  transition: color 0.4s var(--ease);
}
.service_row:hover .service_desc { color: var(--beige-200); }

/* ==========================================================
   PROCESS
   ========================================================== */
.process {
  background: var(--black-400);
  padding: var(--section) 0 0;
  overflow: hidden;
}
.process_heading {
  font-size: clamp(2.5rem, 9vw, 8rem);
  line-height: 0.95;
  padding: 0 var(--margin);
  margin-bottom: clamp(3rem, 7vw, 6rem);
}
.process_row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: stretch;
}
.process_text {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(2rem, 6vw, 8rem);
  align-items: start;
  border-top: 1px solid var(--card-bg);
  margin-left: var(--margin);
  padding: 1.4rem clamp(2rem, 4vw, 4rem) 1.4rem 0;
}
.step_tag { color: var(--beige-100); padding-top: 0.3rem; }
.step_body h3 {
  font-size: clamp(1.3rem, 1.05rem + 1.1vw, 1.85rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 1.1rem;
}
.step_body p { color: var(--black-50); max-width: 28rem; margin-bottom: 1.4rem; }
.step_link {
  color: var(--beige-100);
  border-bottom: 1px solid var(--black-300);
  padding-bottom: 0.2rem;
  transition: border-color 0.3s;
}
.step_link:hover { border-color: var(--beige-100); }

.process_img {
  position: relative;
  overflow: hidden;
  min-height: clamp(13rem, 25vw, 22rem);
}
.process_img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================
   FAQ
   ========================================================== */
.faq {
  background: var(--faq-bg);
  padding: var(--section) var(--margin);
}
.faq_grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
}
.faq_side { position: sticky; bottom: 4rem; align-self: end; }
.faq_portrait {
  width: clamp(9rem, 12vw, 12rem);
  overflow: hidden;
  border-radius: 0.15rem;
  margin-bottom: 1.6rem;
}
.faq_side_text {
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--black-50);
  margin-bottom: 1.6rem;
}
.faq_heading {
  font-size: var(--fs-big);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  max-width: 22ch;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}
.faq_item {
  border-top: 1px dotted var(--black-200);
}
.faq_item:last-child { border-bottom: 1px dotted var(--black-200); }
.faq_item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  list-style: none;
  cursor: pointer;
  padding: 1.5rem 0;
  font-size: clamp(1.1rem, 1rem + 0.6vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: color 0.3s;
}
.faq_item summary::-webkit-details-marker { display: none; }
.faq_item summary:hover { color: var(--beige-400); }
.faq_marker {
  flex: none;
  width: 0.55rem; height: 0.55rem;
  border: 1px solid var(--black-50);
  border-radius: 50%;
  transition: background 0.3s;
}
.faq_item[open] .faq_marker { background: var(--beige-100); border-color: var(--beige-100); }
.faq_answer { padding: 0 0 1.8rem; max-width: 40rem; color: var(--black-50); }
.faq_answer p + p { margin-top: 1rem; }

/* ==========================================================
   CTA
   ========================================================== */
.cta {
  position: relative;
  min-height: 110vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--section) var(--margin) 3rem;
  overflow: hidden;
}
.cta_bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.cta_bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(1);
}
.cta_label { color: var(--black-50); margin-bottom: clamp(2rem, 5vh, 4rem); }
.cta_heading {
  font-size: var(--fs-display);
  margin-bottom: clamp(2.5rem, 6vh, 5rem);
}
.cta_line { display: block; }
.cta_line:nth-child(2) { margin-left: -6vw; }
.cta_line:nth-child(3) { margin-left: 5vw; }
.cta_line:nth-child(4) { margin-left: 10vw; }
.cta_arrow { font-family: var(--font-sans); font-weight: 600; margin-right: 1rem; }
.cta_awards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(1.5rem, 5vw, 4rem);
  margin-top: auto;
  padding-top: clamp(3rem, 8vh, 6rem);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
}
.cta_award { display: flex; align-items: center; gap: 0.6rem; }
.laurel { font-size: 1.4rem; }
.laurel-r { transform: scaleX(-1); }
.cta_quote { color: var(--black-50); margin-top: 2.5rem; }

/* ==========================================================
   FOOTER
   ========================================================== */
.footer { background: var(--black-400); }
.footer_grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding: var(--section) var(--margin) clamp(4rem, 10vh, 8rem);
}
.footer_nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: clamp(2.4rem, 2rem + 2.6vw, 4.4rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  padding: 0.9rem 0;
  border-bottom: 1px dotted var(--black-300);
  transition: padding-left 0.4s var(--ease);
}
.footer_nav a:hover { padding-left: 1.2rem; }
.footer_arrow {
  font-size: 1.6rem;
  opacity: 0;
  transform: translateX(-0.5rem);
  transition: opacity 0.3s, transform 0.3s;
}
.footer_nav a:hover .footer_arrow { opacity: 1; transform: none; }

.footer_details {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  padding-top: 0.5rem;
}
.footer_label { color: var(--black-100); margin-bottom: 1.1rem; }
.footer_email { font-weight: 500; }
.footer_email:hover, .footer_link:hover { opacity: 0.6; }
.footer_muted { color: var(--black-50); margin-top: 0.6rem; }
.footer_link { display: inline-block; padding: 0.15rem 0; transition: opacity 0.3s; }
.footer_ai { display: flex; gap: 0.5rem; }
.ai_chip {
  display: grid;
  place-items: center;
  width: 2.6rem; height: 2.6rem;
  background: var(--card-bg);
  border-radius: 0.15rem;
  font-size: 1.1rem;
  transition: background 0.3s;
}
.ai_chip:hover { background: var(--black-300); }

.footer_bottom {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: end;
  padding: 0 var(--margin) 2rem;
}
.footer_center { text-align: center; }
.footer_copy { text-align: right; }
.footer_time, .footer_center, .footer_copy { font-size: var(--fs-small); }
#backToTop { transition: opacity 0.3s; }
#backToTop:hover { opacity: 0.6; }

.footer_strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--beige-150);
  color: var(--black-400);
  padding: clamp(4rem, 12vh, 8rem) var(--margin);
}
.footer_strip_logo { height: 1.35rem; width: auto; }
.footer_slogan { font-weight: 500; }

/* ==========================================================
   RESPONSIVE
   ========================================================== */
@media (max-width: 900px) {
  .header_nav { display: none; }
  .manifesto_grid, .brands, .faq_grid { grid-template-columns: 1fr; }
  .brands_grid { grid-template-columns: repeat(2, 1fr); }
  .brand_cell:nth-child(n+5) { border-bottom: 1px dotted var(--black-300); }
  .brand_cell:nth-child(n+7) { border-bottom: none; }
  .case_grid { grid-template-columns: 1fr; }
  .case_intro_text { font-size: clamp(1.3rem, 6vw, 2rem); }
  .work_row { grid-template-columns: 1fr; }
  .service_row {
    grid-template-columns: 2.5rem 1fr;
    gap: 0.5rem 1.5rem;
  }
  .service_desc { grid-column: 2; }
  .process_row { grid-template-columns: 1fr; }
  .process_text { margin-right: var(--margin); padding-right: 0; }
  .process_img img { min-height: 16rem; }
  .process_heading { font-size: clamp(2.4rem, 12vw, 5rem); }
  .footer_grid { grid-template-columns: 1fr; }
  .footer_bottom { grid-template-columns: 1fr; gap: 1.5rem; text-align: left; }
  .footer_center, .footer_copy { text-align: left; }
  .cta_line:nth-child(n) { margin-left: 0; }
  .faq_side { position: static; }
}