:root {
  --header-bg-1: #0d2436;
  --header-bg-2: #123a4f;
  --header-bg-3: #1b4f5e;
  --header-text: #f6f2e9;
  --header-muted: #9fb9c8;
  --accent: #f2a93b;
  --accent-strong: #e8912a;
  --accent-2: #5fd6bf;
  --header-border: rgba(246, 242, 233, 0.1);

  --page-bg: #f4f2ec;
  --page-text: #1c2b30;
  --page-muted: #5c6e73;
  --card-bg: #ffffff;
  --card-border: #e2ded2;
  --input-bg: #ffffff;
  --input-text: #1c2b30;
  --input-placeholder: #5c6e73;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page-bg: #10181b;
    --page-text: #eef1ee;
    --page-muted: #93a3a6;
    --card-bg: #172225;
    --card-border: #263236;
  }
}
:root[data-theme="dark"] {
  --page-bg: #10181b;
  --page-text: #eef1ee;
  --page-muted: #93a3a6;
  --card-bg: #172225;
  --card-border: #263236;
}
:root[data-theme="light"] {
  --page-bg: #f4f2ec;
  --page-text: #1c2b30;
  --page-muted: #5c6e73;
  --card-bg: #ffffff;
  --card-border: #e2ded2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hind Siliguri", "Vrinda", "Noto Sans Bengali", "Shonar Bangla",
    "Segoe UI", system-ui, sans-serif;
  background: var(--page-bg);
  color: var(--page-text);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background:
    radial-gradient(120% 180% at 8% 0%, rgba(95, 214, 191, 0.10), transparent 55%),
    linear-gradient(120deg, var(--header-bg-1) 0%, var(--header-bg-2) 55%, var(--header-bg-3) 100%);
  border-bottom: 1px solid var(--header-border);
  box-shadow: 0 8px 24px -16px rgba(0, 0, 0, 0.5);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 78px;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-strong) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px -4px rgba(242, 169, 59, 0.55);
  flex-shrink: 0;
}
.logo-mark svg { width: 20px; height: 20px; }
.logo-text {
  font-size: 1.32rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  white-space: nowrap;
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Center nav */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  gap: 2.1rem;
}
.main-nav a {
  position: relative;
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--header-muted);
  padding: 0.4rem 0.1rem;
  transition: color 0.2s ease;
  white-space: nowrap;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
  border-radius: 2px;
}
.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--header-text);
}
.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}
.main-nav a.is-active { color: var(--header-text); }
.main-nav a.is-active::after { transform: scaleX(1); }

/* Right side */
.header-actions {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.cta-btn {
  border: none;
  cursor: pointer;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  color: #142225;
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  box-shadow: 0 6px 18px -6px rgba(242, 169, 59, 0.55);
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}
.cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px -6px rgba(95, 214, 191, 0.45);
  filter: brightness(1.04);
}
.cta-btn:focus-visible,
.main-nav a:focus-visible,
.menu-toggle:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 6px;
}
.cta-btn:active { transform: translateY(0); }

/* Mobile toggle */
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid var(--header-border);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.menu-toggle span {
  width: 18px;
  height: 2px;
  background: var(--header-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 0.5rem 1.5rem 1.25rem;
  background: var(--header-bg-2);
  border-top: 1px solid var(--header-border);
}
.mobile-nav a {
  padding: 0.85rem 0.1rem;
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--header-muted);
  border-bottom: 1px solid var(--header-border);
}
.mobile-nav a:last-of-type { border-bottom: none; }
.mobile-nav a:hover { color: var(--header-text); }
.mobile-nav.is-open { display: flex; }

@media (max-width: 860px) {
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 78vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #163a4f 0%, var(--page-bg) 82%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-bg .blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
  animation: drift 16s ease-in-out infinite alternate;
}
.hero-bg .blob-a {
  width: 480px;
  height: 480px;
  top: -140px;
  left: -80px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
}
.hero-bg .blob-b {
  width: 520px;
  height: 520px;
  top: 10%;
  right: -160px;
  background: radial-gradient(circle, var(--accent-2) 0%, transparent 70%);
  animation-delay: -6s;
}
.hero-bg .grid-overlay {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(246, 242, 233, 0.16) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 40%, transparent 85%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 40%, transparent 85%);
}

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(30px, 40px) scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-bg .blob { animation: none; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.75rem 1.5rem 4.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--header-text);
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--header-border);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
}
.hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.75rem);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin: 0;
  color: var(--header-text);
}
.hero h1 .accent-text {
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  max-width: 46ch;
  margin: 0 auto;
  color: var(--header-muted);
  font-size: 1.1rem;
  line-height: 1.7;
}
.hero-cta {
  border: none;
  cursor: pointer;
  padding: 0.9rem 2.3rem;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #142225;
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  box-shadow: 0 10px 28px -8px rgba(242, 169, 59, 0.55);
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}
.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -8px rgba(95, 214, 191, 0.45);
  filter: brightness(1.05);
}
.hero-cta:active { transform: translateY(0); }
.hero-cta:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
}

/* WhatsApp button — flush to the viewport's right edge on every page */
.whatsapp-btn {
  position: fixed;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 60;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #25d366;
  color: #ffffff;
  padding: 0.9rem;
  border-radius: 999px 0 0 999px;
  box-shadow: -8px 10px 26px -10px rgba(0, 0, 0, 0.45);
  transition: padding 0.25s ease, box-shadow 0.25s ease;
}
.whatsapp-btn svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}
.whatsapp-btn .whatsapp-label {
  max-width: 0;
  margin-left: 0;
  opacity: 0;
  white-space: nowrap;
  font-weight: 600;
  font-size: 0.95rem;
  transition: max-width 0.25s ease, opacity 0.2s ease, margin-left 0.25s ease;
}
.whatsapp-btn:hover,
.whatsapp-btn:focus-visible {
  padding-left: 1.2rem;
  box-shadow: -10px 12px 30px -8px rgba(0, 0, 0, 0.5);
}
.whatsapp-btn:hover .whatsapp-label,
.whatsapp-btn:focus-visible .whatsapp-label {
  max-width: 140px;
  margin-left: 0.6rem;
  opacity: 1;
}
.whatsapp-btn:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 3px;
}
@media (max-width: 640px) {
  .whatsapp-btn { padding: 0.75rem; }
}

/* Back-to-top button */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #142225;
  box-shadow: 0 10px 24px -8px rgba(242, 169, 59, 0.5);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease, box-shadow 0.2s ease;
}
.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  box-shadow: 0 14px 28px -8px rgba(95, 214, 191, 0.45);
  transform: translateY(-2px);
}
.back-to-top:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
}
.back-to-top svg {
  width: 20px;
  height: 20px;
}
@media (prefers-reduced-motion: reduce) {
  .back-to-top {
    transition: opacity 0.15s ease;
    transform: none !important;
  }
}

/* ---------- Services ---------- */
.services {
  position: relative;
  padding: 2.25rem 1.5rem 5.5rem;
  background:
    radial-gradient(60% 55% at 12% 0%, rgba(242, 169, 59, 0.10), transparent 70%),
    radial-gradient(55% 50% at 100% 100%, rgba(95, 214, 191, 0.12), transparent 70%),
    var(--page-bg);
}
.services-inner {
  max-width: 1240px;
  margin: 0 auto;
}
.services-head,
.portfolio-head,
.faq-head {
  max-width: 640px;
  margin: 0 auto 2.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
}
.services-head .eyebrow,
.portfolio-head .eyebrow,
.faq-head .eyebrow {
  color: var(--page-muted);
  border: 1px solid var(--card-border);
  background: transparent;
}
.services-head h2,
.portfolio-head h2,
.faq-head h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin: 0;
  color: var(--page-text);
}
.services-head p,
.portfolio-head p,
.faq-head p {
  margin: 0;
  color: var(--page-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
@media (max-width: 980px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .services-grid { grid-template-columns: 1fr; }
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.9rem 1.6rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-2);
  box-shadow:
    inset 0 -4px 0 var(--accent-2),
    inset 0 2px 14px rgba(0, 0, 0, 0.10),
    0 16px 32px -16px rgba(0, 0, 0, 0.25);
}
.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.service-icon svg { width: 26px; height: 26px; }
.service-icon.tone-amber {
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #142225;
}
.service-icon.tone-teal {
  background: linear-gradient(145deg, var(--accent-2) 0%, #38a893 100%);
  color: #0d2436;
}
.service-card h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--page-text);
}
.service-card p {
  margin: 0;
  color: var(--page-muted);
  font-size: 0.96rem;
  line-height: 1.65;
}

/* ---------- Portfolio (looping marquee) ---------- */
.portfolio {
  padding: 2.25rem 0 5.5rem;
  background: var(--card-bg);
}
.portfolio-head {
  padding: 0 1.5rem;
}

.portfolio-track-wrapper {
  overflow: hidden;
  width: 100%;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.portfolio-track {
  display: flex;
  width: max-content;
  gap: 1.5rem;
  padding: 0.5rem 1.5rem;
  animation: portfolio-scroll 34s linear infinite;
}
.portfolio-track:hover {
  animation-play-state: paused;
}
@keyframes portfolio-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .portfolio-track { animation: none; }
}

.portfolio-card {
  flex: 0 0 232px;
  background: var(--page-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.6rem 1.2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.85rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.portfolio-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-2);
  box-shadow: 0 16px 32px -16px rgba(0, 0, 0, 0.25);
}

.portfolio-logo-mark {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: grayscale(55%) opacity(0.85);
  transition: filter 0.25s ease, transform 0.25s ease;
}
.portfolio-logo-mark svg {
  width: 26px;
  height: 26px;
}
.portfolio-card:hover .portfolio-logo-mark {
  filter: grayscale(0%) opacity(1);
  transform: scale(1.06);
}
.portfolio-logo-mark.tone-1 { background: linear-gradient(145deg, var(--header-bg-2), var(--header-bg-3)); color: var(--header-text); }
.portfolio-logo-mark.tone-2 { background: linear-gradient(145deg, var(--accent) 0%, var(--accent-strong) 100%); color: #142225; }
.portfolio-logo-mark.tone-3 { background: linear-gradient(145deg, var(--accent-2) 0%, #2c8a77 100%); color: #0d2436; }

.portfolio-brand {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--page-text);
}
.portfolio-tag {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  color: var(--page-muted);
  border: 1px solid var(--card-border);
}

/* ---------- FAQ ---------- */
.faq {
  padding: 5.5rem 1.5rem;
  background: var(--page-bg);
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  overflow: hidden;
}
.faq-question {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.4rem;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--page-text);
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: -2px;
  border-radius: 10px;
}

.faq-icon {
  position: relative;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--page-muted);
  transition: background 0.2s ease;
}
.faq-icon::before { width: 10px; height: 1.6px; transform: translate(-50%, -50%); }
.faq-icon::after { width: 1.6px; height: 10px; transform: translate(-50%, -50%); }

.faq-item[open] .faq-question { border-bottom: 1px solid var(--card-border); }
.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  border-color: var(--accent-2);
}
.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after {
  background: var(--accent-2);
}

.faq-answer {
  padding: 1.1rem 1.4rem 1.4rem;
}
.faq-answer p {
  margin: 0;
  max-width: 65ch;
  color: var(--page-muted);
  font-size: 0.98rem;
  line-height: 1.75;
}

/* ---------- Contact ---------- */
.contact {
  padding: 5.5rem 1.5rem;
  background:
    radial-gradient(70% 100% at 100% 0%, rgba(95, 214, 191, 0.10), transparent 60%),
    linear-gradient(150deg, var(--header-bg-1) 0%, var(--header-bg-2) 55%, var(--header-bg-3) 100%);
}
.contact-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 3rem;
  align-items: start;
}
@media (max-width: 860px) {
  .contact-inner { grid-template-columns: 1fr; }
}

.contact-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.1rem;
}
.contact-info h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-wrap: balance;
  color: var(--header-text);
}
.contact-info p {
  margin: 0;
  max-width: 42ch;
  color: var(--header-muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.contact-channels {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}
.contact-channels a {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--header-border);
  border-radius: 12px;
  color: var(--header-text);
  font-weight: 600;
  font-size: 0.98rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.contact-channels a:hover,
.contact-channels a:focus-visible {
  border-color: var(--accent-2);
  background: rgba(255, 255, 255, 0.05);
}
.contact-channel-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent-2);
}
.contact-channel-icon svg { width: 18px; height: 18px; }

.contact-form-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.45);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--page-muted);
}
.field input,
.field select,
.field textarea {
  font: inherit;
  font-weight: 500;
  color: var(--input-text);
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input::placeholder,
.field textarea::placeholder {
  color: var(--input-placeholder);
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(95, 214, 191, 0.2);
}
.field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%235c6e73' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M5 7.5l5 5 5-5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 16px;
  padding-right: 2.4rem;
}

.contact-form-card .form-submit {
  width: 100%;
  margin-top: 0.25rem;
}
.contact-form-card .form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-status {
  margin: -0.4rem 0 0;
  font-size: 0.9rem;
  min-height: 1.2em;
}
.form-status.is-success { color: var(--accent-2); }
.form-status.is-error { color: #e5484d; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--header-bg-1);
  border-top: 1px solid var(--header-border);
}
.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2.5rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
}
@media (max-width: 760px) {
  .footer-inner { grid-template-columns: 1fr; }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}
.footer-brand p {
  margin: 0;
  max-width: 36ch;
  color: var(--header-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.footer-social {
  display: flex;
  gap: 0.6rem;
}
.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--header-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--header-muted);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer-social a svg { width: 18px; height: 18px; }
.footer-social a:hover,
.footer-social a:focus-visible {
  color: var(--accent-2);
  border-color: var(--accent-2);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.85rem;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 1.5rem;
  row-gap: 0.7rem;
}
.footer-links h3,
.footer-contact h3 {
  margin: 0 0 0.3rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--header-text);
}
.footer-links h3 {
  grid-column: 1 / -1;
}
.footer-links a,
.footer-contact a {
  color: var(--header-muted);
  font-size: 0.96rem;
  transition: color 0.2s ease;
}
.footer-links a:hover,
.footer-contact a:hover,
.footer-links a:focus-visible,
.footer-contact a:focus-visible {
  color: var(--accent-2);
}

.footer-bottom {
  border-top: 1px solid var(--header-border);
  padding: 1.4rem 1.5rem;
  text-align: center;
}
.footer-bottom p {
  margin: 0;
  color: var(--header-muted);
  font-size: 0.85rem;
}

/* ---------- Shared sub-page elements ---------- */
.page-banner {
  padding: 3.5rem 1.5rem 3rem;
  text-align: center;
  background: linear-gradient(150deg, var(--header-bg-1) 0%, var(--header-bg-2) 100%);
}
.page-banner .eyebrow { margin-bottom: 0.9rem; }
.page-banner h1 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-wrap: balance;
  color: var(--header-text);
}
.page-banner p {
  margin: 0 auto;
  max-width: 52ch;
  color: var(--header-muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.page-section {
  padding: 3.5rem 1.5rem 4.5rem;
  background: var(--page-bg);
}

.card-grid-2,
.card-grid-3 {
  display: grid;
  gap: 1.75rem;
  margin: 0 auto;
}
.card-grid-2 { grid-template-columns: repeat(2, 1fr); max-width: 980px; }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); max-width: 1100px; }
@media (max-width: 900px) {
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .card-grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .card-grid-3 { grid-template-columns: 1fr; }
}

.service-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.service-points li {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  color: var(--page-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}
.service-points li::before {
  content: "✓";
  flex-shrink: 0;
  color: var(--accent-2);
  font-weight: 700;
}

.page-cta {
  padding: 4rem 1.5rem;
  background: var(--card-bg);
  border-top: 1px solid var(--card-border);
  text-align: center;
}
.page-cta-inner {
  max-width: 620px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
}
.page-cta h2 {
  margin: 0;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-wrap: balance;
  color: var(--page-text);
}
.page-cta p {
  margin: 0;
  color: var(--page-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.case-note {
  max-width: 760px;
  margin: 0 auto 2.5rem;
  padding: 0.9rem 1.2rem;
  border: 1px solid var(--card-border);
  border-radius: 12px;
  background: var(--card-bg);
  color: var(--page-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  text-align: center;
}

.case-block strong {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--accent-2);
  margin-bottom: 0.25rem;
}
.case-block p {
  margin: 0;
  color: var(--page-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.about-values {
  margin-top: 1.75rem;
}

/* ---------- About: personal profile ---------- */
.about-profile {
  max-width: 900px;
  margin: 0 auto 3rem;
  display: flex;
  align-items: center;
  gap: 2.25rem;
}
.about-avatar {
  width: 116px;
  height: 116px;
  flex-shrink: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
  font-weight: 800;
  color: #142225;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-2) 100%);
}
.about-profile-text h2 {
  margin: 0 0 0.2rem;
  font-size: clamp(1.4rem, 2.6vw, 1.8rem);
  font-weight: 800;
  color: var(--page-text);
}
.about-profile-text .about-role {
  display: block;
  margin: 0 0 0.75rem;
  color: var(--accent-2);
  font-weight: 700;
  font-size: 0.92rem;
}
.about-profile-text p {
  margin: 0;
  max-width: 56ch;
  color: var(--page-muted);
  font-size: 1.02rem;
  line-height: 1.75;
}
@media (max-width: 620px) {
  .about-profile { flex-direction: column; text-align: center; gap: 1.25rem; }
}

.about-quote {
  max-width: 640px;
  margin: 0 auto 3rem;
  padding: 0 0 0 1.5rem;
  border-left: 3px solid var(--accent-2);
  font-size: 1.2rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--page-text);
}
@media (max-width: 620px) {
  .about-quote { text-align: left; }
}

/* ---------- Portfolio: alternating feature list ---------- */
.feature-list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.feature-row {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--card-border);
}
.feature-list .feature-row:first-child {
  border-top: 1px solid var(--card-border);
}
.feature-row:nth-child(even) {
  flex-direction: row-reverse;
}
.feature-icon {
  width: 84px;
  height: 84px;
  flex-shrink: 0;
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-icon svg { width: 36px; height: 36px; }
.feature-icon.tone-1 { background: linear-gradient(145deg, var(--header-bg-2), var(--header-bg-3)); color: var(--header-text); }
.feature-icon.tone-2 { background: linear-gradient(145deg, var(--accent) 0%, var(--accent-strong) 100%); color: #142225; }
.feature-icon.tone-3 { background: linear-gradient(145deg, var(--accent-2) 0%, #2c8a77 100%); color: #0d2436; }
.feature-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}
.feature-row:nth-child(even) .feature-text {
  align-items: flex-end;
  text-align: right;
}
.feature-text h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--page-text);
}
.feature-text p {
  margin: 0;
  max-width: 60ch;
  color: var(--page-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}
@media (max-width: 640px) {
  .feature-row,
  .feature-row:nth-child(even) {
    flex-direction: column;
    text-align: center;
    gap: 1.1rem;
  }
  .feature-row:nth-child(even) .feature-text,
  .feature-text {
    align-items: center;
    text-align: center;
  }
}

/* ---------- Case study: timeline ---------- */
.case-timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 3rem;
  padding-left: 2rem;
}
.case-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--card-border);
}
.case-stop {
  position: relative;
}
.case-stop::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 4px var(--page-bg);
}
.case-stop h3 {
  margin: 0.5rem 0 1.1rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--page-text);
}
.case-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
@media (max-width: 700px) {
  .case-columns { grid-template-columns: 1fr; }
}

/* ---------- Blog: editorial list ---------- */
.blog-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.blog-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.6rem 0.5rem;
  border-bottom: 1px solid var(--card-border);
  border-radius: 10px;
  transition: background 0.2s ease;
}
.blog-list .blog-row:first-child {
  border-top: 1px solid var(--card-border);
}
.blog-row:hover {
  background: var(--card-bg);
}
.blog-row-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
}
.blog-row-content h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--page-text);
}
.blog-row-content p {
  margin: 0;
  max-width: 60ch;
  color: var(--page-muted);
  font-size: 0.94rem;
  line-height: 1.6;
}
.blog-row-arrow {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--page-muted);
  transition: transform 0.2s ease, color 0.2s ease;
}
.blog-row:hover .blog-row-arrow {
  transform: translateX(4px);
  color: var(--accent-2);
}
@media (max-width: 560px) {
  .blog-row { flex-wrap: wrap; }
  .blog-row-content { order: 2; flex-basis: 100%; }
  .blog-row-arrow { display: none; }
}