/* ============================================================
   WebsiteBD — Digital Growth Agency
   Editorial system · paper / ink / electric blue
   ============================================================ */

:root {
  --paper: #f5f2ea;
  --paper-2: #edeade;
  --ink: #141310;
  --ink-2: #1c1b17;
  --soft: #57544a;
  --faint: #8b877a;
  --line: #d8d3c3;
  --line-dark: rgba(245, 242, 234, 0.16);
  --blue: #2743ff;
  --blue-bright: #4d64ff;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--blue); color: var(--paper); }

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

.wrap { width: min(1280px, 92vw); margin-inline: auto; }

em, .serif {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0;
}

/* ---- micro label ---- */
.label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--soft);
}
.label::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--blue);
  border-radius: 50%;
  flex: none;
}
.label--num::before { display: none; }
.label--num span { color: var(--blue); margin-right: 0.7rem; }

/* ---- reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }

/* ---- sections ---- */
.section { padding: clamp(4.5rem, 10vh, 8rem) 0; }
.section--dark {
  background: var(--ink);
  color: var(--paper);
}
.section--dark .label { color: rgba(245, 242, 234, 0.55); }

.section-head { margin-bottom: clamp(2.5rem, 6vh, 4rem); }
.section-head h2 {
  font-size: clamp(2.1rem, 4.6vw, 3.8rem);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin-top: 1.3rem;
  max-width: 20ch;
}
.section-head h2 em { font-weight: 400; }
.section-head p {
  margin-top: 1.2rem;
  color: var(--soft);
  max-width: 60ch;
  font-size: 1.02rem;
}
.section--dark .section-head p { color: rgba(245, 242, 234, 0.65); }

/* ---- buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1rem 1.8rem;
  border-radius: 100px;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid var(--ink);
  transition: background 0.35s var(--ease), color 0.35s var(--ease), transform 0.35s var(--ease);
}
.btn:hover { background: var(--blue); border-color: var(--blue); color: #fff; transform: translateY(-2px); }
.btn .arr { transition: transform 0.35s var(--ease); }
.btn:hover .arr { transform: translate(3px, -3px); }

.btn--line {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn--line:hover { background: var(--ink); color: var(--paper); }

.section--dark .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.section--dark .btn:hover { background: var(--blue-bright); border-color: var(--blue-bright); color: #fff; }

/* text link with sweep underline */
.tlink {
  position: relative;
  font-weight: 500;
  padding-bottom: 2px;
}
.tlink::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(1);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.tlink:hover::after { transform: scaleX(0); transform-origin: right; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.3rem 0;
  transition: padding 0.4s var(--ease), background 0.4s, box-shadow 0.4s;
}
.nav.scrolled {
  padding: 0.8rem 0;
  background: rgba(245, 242, 234, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

.brand {
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  display: inline-flex;
  align-items: baseline;
}
.brand sup {
  font-size: 0.55em;
  font-weight: 600;
  color: var(--blue);
  margin-left: 2px;
}

.nav__links { display: flex; align-items: center; gap: 2.1rem; }
.nav__links a:not(.btn) {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--soft);
  position: relative;
  transition: color 0.25s;
}
.nav__links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%; height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}
.nav__links a:not(.btn):hover { color: var(--ink); }
.nav__links a:not(.btn):hover::after { transform: scaleX(1); transform-origin: left; }
.nav__links .btn { padding: 0.62rem 1.35rem; font-size: 0.84rem; }

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink);
  border-radius: 100px;
  padding: 0.55rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 940px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: fixed;
    inset: 0;
    background: var(--paper);
    flex-direction: column;
    justify-content: center;
    gap: 1.8rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s, visibility 0.35s;
    z-index: -1;
  }
  .nav__links.open { opacity: 1; visibility: visible; z-index: 99; }
  .nav__links a:not(.btn) { font-size: 1.35rem; font-weight: 600; color: var(--ink); }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 8.5rem 0 0;
  position: relative;
}
.hero__label { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.hero__label .divider { width: 46px; height: 1px; background: var(--ink); opacity: 0.35; }

.hero h1 {
  margin-top: 1.8rem;
  font-size: clamp(2.9rem, 8.6vw, 7.2rem);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.045em;
  max-width: 13ch;
}
.hero h1 em { font-weight: 400; letter-spacing: -0.01em; }
.hero h1 .accent { color: var(--blue); }

.hero__row {
  margin-top: 2.6rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.hero__sub {
  color: var(--soft);
  max-width: 46ch;
  font-size: 1.05rem;
}
.hero__cta { display: flex; gap: 0.9rem; flex-wrap: wrap; }

.hero__meta {
  margin-top: clamp(3rem, 7vh, 5rem);
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
  gap: 1rem;
}
@media (max-width: 700px) { .hero__meta { grid-template-columns: 1fr; row-gap: 0.9rem; } }
.hero__meta div {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--faint);
  text-transform: uppercase;
}
.hero__meta div b {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
  margin-bottom: 0.15rem;
}

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee {
  border-block: 1px solid var(--line);
  overflow: hidden;
  padding: 0.95rem 0;
  background: var(--paper-2);
}
.marquee__track {
  display: flex;
  gap: 2.4rem;
  width: max-content;
  animation: scrollX 38s linear infinite;
}
.marquee span {
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--soft);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 2.4rem;
}
.marquee span::after { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--blue); }
@keyframes scrollX { to { transform: translateX(-50%); } }

/* ============================================================
   STATEMENT
   ============================================================ */
.statement p {
  font-size: clamp(1.5rem, 3.2vw, 2.5rem);
  font-weight: 500;
  line-height: 1.28;
  letter-spacing: -0.02em;
  max-width: 30ch;
}
.statement p em { font-weight: 400; }
.statement p .hl { color: var(--blue); }
.statement__foot {
  margin-top: 2.2rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  color: var(--soft);
  font-size: 0.95rem;
}
.statement__foot::before { content: ""; width: 46px; height: 1px; background: var(--ink); opacity: 0.35; }

/* ============================================================
   SERVICES INDEX
   ============================================================ */
.svc-index { border-top: 1px solid var(--line); }
.svc {
  border-bottom: 1px solid var(--line);
}
.svc__head {
  width: 100%;
  background: none;
  border: 0;
  display: grid;
  grid-template-columns: 70px 1.25fr 1fr 44px;
  align-items: center;
  gap: 1.4rem;
  padding: 1.7rem 0.2rem;
  text-align: left;
  transition: padding-left 0.4s var(--ease);
}
.svc__head:hover { padding-left: 1rem; }
.svc__num {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}
.svc__title {
  font-size: clamp(1.25rem, 2.6vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
}
.svc__hint { font-size: 0.9rem; color: var(--faint); }
.svc__toggle {
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 400;
  font-size: 1.15rem;
  color: var(--ink);
  transition: transform 0.4s var(--ease), background 0.3s, color 0.3s, border-color 0.3s;
  justify-self: end;
}
.svc.open .svc__toggle { transform: rotate(45deg); background: var(--ink); color: var(--paper); border-color: var(--ink); }
.svc__head:hover .svc__toggle { border-color: var(--ink); }

.svc__body { max-height: 0; overflow: hidden; transition: max-height 0.55s var(--ease); }
.svc__body-inner {
  display: grid;
  grid-template-columns: 70px 1.25fr 1fr;
  gap: 1.4rem;
  padding: 0.2rem 0.2rem 2.2rem;
}
.svc__body p { color: var(--soft); font-size: 0.98rem; max-width: 52ch; grid-column: 2; }
.svc__tags { display: flex; flex-wrap: wrap; gap: 0.45rem; align-content: flex-start; }
.svc__tags li {
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 0.3rem 0.8rem;
  color: var(--soft);
  background: var(--paper);
}

@media (max-width: 760px) {
  .svc__head { grid-template-columns: 44px 1fr 40px; }
  .svc__hint { display: none; }
  .svc__body-inner { grid-template-columns: 1fr; padding-left: 0.2rem; }
  .svc__body p { grid-column: auto; }
}

/* ============================================================
   ENGINES (SEO / AEO / GEO / AIO) — dark
   ============================================================ */
.engines__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}
@media (max-width: 1000px) { .engines__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .engines__grid { grid-template-columns: 1fr; } }

.engine {
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  padding: 2.2rem 1.8rem 2.5rem;
  transition: background 0.4s var(--ease);
  position: relative;
}
.engine:hover { background: var(--ink-2); }
.engine__index {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: rgba(245, 242, 234, 0.4);
}
.engine__acro {
  font-size: clamp(2.4rem, 4.5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 1.4rem 0 0.3rem;
}
.engine:hover .engine__acro { color: var(--blue-bright); }
.engine h3 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.05rem;
  color: rgba(245, 242, 234, 0.75);
  margin-bottom: 0.9rem;
}
.engine p { font-size: 0.92rem; color: rgba(245, 242, 234, 0.6); }

/* ============================================================
   PROCESS
   ============================================================ */
.steps { border-top: 1px solid var(--line); }
.pstep {
  display: grid;
  grid-template-columns: 70px 1fr 1.5fr;
  gap: 1.4rem;
  align-items: baseline;
  padding: 1.9rem 0.2rem;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.4s var(--ease);
}
.pstep:hover { padding-left: 1rem; }
.pstep__num {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}
.pstep h3 { font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; }
.pstep p { color: var(--soft); font-size: 0.96rem; }
@media (max-width: 700px) {
  .pstep { grid-template-columns: 44px 1fr; }
  .pstep p { grid-column: 2; }
}

/* ============================================================
   WHY / PRINCIPLES
   ============================================================ */
.why__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}
@media (max-width: 880px) { .why__grid { grid-template-columns: 1fr; } }
.why__sticky { position: sticky; top: 7rem; }
@media (max-width: 880px) { .why__sticky { position: static; } }

.principle {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0.2rem;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 1rem;
}
.principle:last-child { border-bottom: 1px solid var(--line); }
.principle span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}
.principle strong { display: block; font-size: 1.08rem; font-weight: 600; letter-spacing: -0.01em; }
.principle p { color: var(--soft); font-size: 0.93rem; margin-top: 0.3rem; }

.figures {
  margin-top: clamp(3rem, 7vh, 5rem);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (max-width: 760px) { .figures { grid-template-columns: repeat(2, 1fr); } }
.figure {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.9rem 1.4rem;
}
.figure strong {
  display: block;
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.figure span {
  display: block;
  margin-top: 0.7rem;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--soft);
}

/* ============================================================
   FAQ
   ============================================================ */
.faq__list { max-width: 860px; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item:first-child { border-top: 1px solid var(--line); }
.faq__q {
  width: 100%;
  background: none;
  border: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.4rem;
  padding: 1.45rem 0.2rem;
  text-align: left;
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  transition: color 0.25s;
}
.faq__q:hover { color: var(--blue); }
.faq__icon {
  flex: none;
  width: 34px; height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 400;
  font-size: 1.05rem;
  transition: transform 0.4s var(--ease), background 0.3s, color 0.3s, border-color 0.3s;
}
.faq__item.open .faq__icon { transform: rotate(45deg); background: var(--ink); color: var(--paper); border-color: var(--ink); }
.faq__a { max-height: 0; overflow: hidden; transition: max-height 0.5s var(--ease); }
.faq__a p { padding: 0 0.2rem 1.6rem; color: var(--soft); font-size: 0.97rem; max-width: 66ch; }

/* ============================================================
   CTA — dark
   ============================================================ */
.cta { text-align: left; }
.cta h2 {
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.04em;
  max-width: 14ch;
}
.cta h2 em { font-weight: 400; color: var(--blue-bright); }
.cta__row {
  margin-top: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta__row p { color: rgba(245, 242, 234, 0.6); max-width: 44ch; font-size: 1rem; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2.5rem, 6vw, 6rem);
}
@media (max-width: 880px) { .contact__grid { grid-template-columns: 1fr; } }

.contact__info h2 {
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-top: 1.3rem;
}
.contact__info h2 em { font-weight: 400; }
.contact__info > p { color: var(--soft); margin-top: 1.2rem; max-width: 44ch; }

.channel {
  margin-top: 1.8rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}
.channel span {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--faint);
  display: block;
  margin-bottom: 0.35rem;
}
.channel a, .channel b {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.channel a { border-bottom: 1px solid transparent; transition: color 0.25s, border-color 0.25s; }
.channel a:hover { color: var(--blue); border-color: var(--blue); }

.form { display: grid; gap: 1.5rem; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 560px) { .form__row { grid-template-columns: 1fr; } }
.field { display: grid; gap: 0.4rem; }
.field label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--faint);
}
.field input, .field select, .field textarea {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.02rem;
  padding: 0.7rem 0.05rem;
  transition: border-color 0.3s;
}
.field ::placeholder { color: var(--faint); }
.field select { appearance: none; cursor: pointer; }
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--ink);
}
.form__foot { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.form__note { font-size: 0.8rem; color: var(--faint); max-width: 34ch; }

/* ============================================================
   FOOTER — dark
   ============================================================ */
.footer {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3.5rem, 8vh, 5.5rem) 0 1.8rem;
}
.footer__word {
  font-size: clamp(3.4rem, 12vw, 9rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 0.95;
  border-bottom: 1px solid var(--line-dark);
  padding-bottom: 2.2rem;
}
.footer__word sup { font-size: 0.28em; font-weight: 600; color: var(--blue-bright); }
.footer__cols {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2rem;
  padding: 2.6rem 0;
}
@media (max-width: 860px) { .footer__cols { grid-template-columns: 1fr 1fr; row-gap: 2.4rem; } }
.footer__cols h4 {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(245, 242, 234, 0.45);
  margin-bottom: 1rem;
}
.footer__cols p { color: rgba(245, 242, 234, 0.6); font-size: 0.92rem; max-width: 30ch; }
.footer__cols ul { display: grid; gap: 0.55rem; }
.footer__cols a { color: rgba(245, 242, 234, 0.7); font-size: 0.92rem; transition: color 0.25s; }
.footer__cols a:hover { color: var(--paper); }
.footer__bottom {
  border-top: 1px solid var(--line-dark);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.7rem;
  font-size: 0.78rem;
  color: rgba(245, 242, 234, 0.45);
}
.footer__bottom .clock { font-variant-numeric: tabular-nums; }

/* back to top */
.top-btn {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s, visibility 0.35s, background 0.3s, color 0.3s;
  z-index: 90;
}
.top-btn.show { opacity: 1; visibility: visible; }
.top-btn:hover { background: var(--ink); color: var(--paper); }

/* ---- reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee__track { animation: none; }
  *, *::before, *::after { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
}