/* =========================================================
   Karteo™ by i2m2 - Landing Page Stylesheet
   ========================================================= */

/* ---------- Variables ---------- */
:root {
  --c-white: #ffffff;
  --c-light-gray: #f5f7fa;
  --c-light-bluegray: #eef2f7;
  --c-blue: #1a6bcc;
  --c-blue-hover: #155aab;
  --c-navy: #1a2a4a;
  --c-navy-2: #243a66;
  --c-gold: #b8860b;
  --c-gold-hover: #a07609;
  --c-text: #1f2a3c;
  --c-text-sub: #4a5568;
  --c-text-mute: #7a8699;
  --c-border: #e2e8f0;
  --c-border-strong: #cbd5e0;

  --shadow-sm: 0 1px 2px rgba(26, 42, 74, 0.05);
  --shadow-md: 0 4px 16px rgba(26, 42, 74, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 42, 74, 0.12);
  --shadow-header: 0 2px 12px rgba(26, 42, 74, 0.08);

  --radius: 8px;
  --radius-lg: 12px;

  --font-serif: "Noto Serif JP", "Yu Mincho", "YuMincho", serif;
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;

  --container: 1120px;
  --header-h: 72px;
  --header-h-mobile: 60px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--c-text);
  background: var(--c-white);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--c-blue); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--c-navy); }
button { font-family: inherit; cursor: pointer; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 88px 0; }
.section--gray { background: var(--c-light-gray); }
.section--white { background: var(--c-white); }

.section-head { text-align: center; margin-bottom: 64px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-blue);
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-head h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(24px, 2.8vw, 32px);
  color: var(--c-navy);
  letter-spacing: 0.03em;
  line-height: 1.55;
}
.section-head h2::after {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background: var(--c-blue);
  margin: 22px auto 0;
  border-radius: 2px;
}
.section-head .lead {
  margin-top: 24px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.95;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 28px;
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: none;
  text-decoration: none;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  box-shadow: var(--shadow-sm);
}
.btn--primary { background: var(--c-blue); color: #fff; }
.btn--primary:hover { background: var(--c-navy); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--gold { background: var(--c-gold); color: #fff; }
.btn--gold:hover { background: var(--c-gold-hover); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--c-blue); border: 1.5px solid var(--c-blue); }
.btn--ghost:hover { background: var(--c-blue); color: #fff; }
.btn .arrow { font-size: 18px; line-height: 1; }

/* ---------- Header ---------- */
.topbar {
  background: var(--c-navy);
  color: rgba(255,255,255,.85);
  font-size: 12px;
  letter-spacing: .04em;
}
.topbar__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  justify-content: flex-end;
  gap: 20px;
}
.topbar a { color: rgba(255,255,255,.85); }
.topbar a:hover { color: #fff; }
.topbar a::after {
  content: "↗";
  font-size: 11px;
  margin-left: 4px;
  opacity: .7;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, border-color .25s ease, background .25s ease;
}
.header.is-scrolled {
  background: #fff;
  box-shadow: var(--shadow-header);
  border-bottom-color: var(--c-border);
}
.header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--c-navy);
}
.logo__mark {
  width: 32px; height: 32px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-navy) 100%);
  display: grid; place-items: center;
  color: #fff;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.02em;
  box-shadow: 0 2px 6px rgba(26,107,204,.25);
}
.logo__wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  line-height: 1;
}
.logo__text {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  letter-spacing: .03em;
  color: var(--c-navy);
}
.logo__text sup { font-size: .5em; color: var(--c-blue); vertical-align: super; margin-left: 1px; }
.logo__divider {
  display: inline-block;
  width: 1px;
  height: 14px;
  background: var(--c-border-strong);
  transform: translateY(1px);
}
.logo__sub {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  color: var(--c-text-mute);
  letter-spacing: .18em;
  line-height: 1;
}

.nav { display: flex; align-items: center; gap: 6px; }
.nav__list { display: flex; gap: 4px; }
.nav__list a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--c-text);
  font-weight: 500;
  border-radius: 6px;
  transition: background .2s ease, color .2s ease;
  letter-spacing: .04em;
}
.nav__list a:hover { color: var(--c-blue); background: var(--c-light-bluegray); }
.nav__cta {
  margin-left: 14px;
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 18px;
  background: var(--c-blue);
  color: #fff !important;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  transition: background .2s ease;
}
.nav__cta:hover { background: var(--c-navy); }

.hamburger {
  display: none;
  width: 44px; height: 44px;
  background: transparent;
  border: none;
  position: relative;
  padding: 0;
}
.hamburger span {
  position: absolute;
  left: 10px; right: 10px;
  height: 2px;
  background: var(--c-navy);
  border-radius: 2px;
  transition: transform .3s ease, opacity .2s ease, top .3s ease;
}
.hamburger span:nth-child(1) { top: 14px; }
.hamburger span:nth-child(2) { top: 21px; }
.hamburger span:nth-child(3) { top: 28px; }
.hamburger.is-open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(ellipse 60% 50% at 85% 15%, rgba(26,107,204,.06) 0%, transparent 60%),
    linear-gradient(180deg, #f8fafc 0%, var(--c-light-bluegray) 100%);
  padding: 88px 0 96px;
  overflow: hidden;
  border-bottom: 1px solid var(--c-border);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,42,74,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,42,74,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 30%, transparent 80%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: block;
  max-width: 820px;
}
.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  background: rgba(255,255,255,.9);
  border: 1px solid var(--c-border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--c-navy);
  font-weight: 500;
  margin-bottom: 32px;
  letter-spacing: .06em;
}
.hero__tag .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(26,107,204,.15);
}
.hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--c-navy);
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.5;
  letter-spacing: 0.03em;
  margin-bottom: 24px;
  max-width: 760px;
}
.hero h1 .accent { color: var(--c-blue); }
.hero h1 .small {
  display: block;
  font-size: 15px;
  color: var(--c-text-sub);
  margin-top: 20px;
  font-weight: 400;
  letter-spacing: .02em;
  line-height: 1.85;
  font-family: var(--font-sans);
}
.hero__sub {
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.95;
  margin-bottom: 40px;
  max-width: 620px;
}
.hero__sub strong {
  color: var(--c-navy);
  font-weight: 700;
  background: linear-gradient(transparent 62%, rgba(184,134,11,.22) 62%);
  padding: 0 2px;
}
.hero__ctas {
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero__trust {
  display: flex; gap: 40px; flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid var(--c-border);
}
.hero__trust div {
  display: flex; flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--c-text-mute);
  letter-spacing: .02em;
}
.hero__trust strong {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--c-navy);
  font-weight: 700;
  letter-spacing: .02em;
}

/* ---------- Issues (Section 2) ---------- */
.issues__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}
.issue-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--c-text);
  line-height: 1.75;
  letter-spacing: .02em;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.issue-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-blue);
}
.issue-item__check {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(26,107,204,.1);
  color: var(--c-blue);
  border: 1.5px solid var(--c-blue);
  display: grid; place-items: center;
  font-size: 11px;
  font-weight: 700;
  margin-top: 2px;
}
.issues__cta { text-align: center; }

/* ---------- Features (Section 3) ---------- */
.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
  position: relative;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.feature-card__num {
  position: absolute;
  top: 20px; right: 24px;
  font-family: var(--font-serif);
  font-size: 38px;
  color: var(--c-light-bluegray);
  font-weight: 700;
  line-height: 1;
}
.feature-card__icon {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-navy) 100%);
  display: grid; place-items: center;
  color: #fff;
  margin-bottom: 20px;
}
.feature-card__icon svg { width: 28px; height: 28px; }
.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 14px;
  line-height: 1.6;
  letter-spacing: .02em;
}
.feature-card p {
  font-size: 13.5px;
  color: var(--c-text-sub);
  line-height: 1.9;
}

/* ---------- Service (Section 4) ---------- */
.service__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.service-card__header {
  background: var(--c-light-bluegray);
  padding: 28px 28px 24px;
  position: relative;
  border-bottom: 3px solid var(--c-blue);
}
.service-card__num {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--c-blue);
  letter-spacing: .18em;
  margin-bottom: 10px;
  font-weight: 700;
}
.service-card__header h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--c-navy);
  letter-spacing: .03em;
  line-height: 1.5;
}
.service-card__body {
  padding: 24px 28px 32px;
  flex: 1;
}
.service-card__body p {
  font-size: 13.5px;
  color: var(--c-text-sub);
  line-height: 1.9;
}
.service-card__body p + p { margin-top: 8px; }

/* ---------- Flow (Section 5) ---------- */
.flow__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}
.flow__grid::before {
  content: "";
  position: absolute;
  top: 64px;
  left: 16%;
  right: 16%;
  height: 2px;
  background: repeating-linear-gradient(
    to right,
    var(--c-border-strong) 0, var(--c-border-strong) 6px,
    transparent 6px, transparent 12px
  );
  z-index: 0;
}
.flow-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  z-index: 1;
  box-shadow: var(--shadow-sm);
}
.flow-step__num {
  width: 64px; height: 64px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-blue), var(--c-navy));
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 9px;
  letter-spacing: .14em;
  position: relative;
  box-shadow: 0 4px 12px rgba(26,107,204,.2);
}
.flow-step__num span {
  font-size: 9px;
  line-height: 1;
  opacity: .85;
  letter-spacing: .16em;
}
.flow-step__num strong {
  font-size: 20px;
  display: block;
  line-height: 1;
  margin-top: 3px;
}
.flow-step h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 14px;
  letter-spacing: .02em;
}
.flow-step p {
  font-size: 13.5px;
  color: var(--c-text-sub);
  line-height: 1.9;
}

/* ---------- Pricing (Section 6) ---------- */
.pricing-card {
  max-width: 640px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--c-border);
}
.pricing-card__header {
  background: var(--c-navy);
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-2) 100%);
  color: #fff;
  text-align: center;
  padding: 32px 24px;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .04em;
  position: relative;
}
.pricing-card__header::after {
  content: "ESTIMATE";
  position: absolute;
  bottom: 8px; left: 0; right: 0;
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: .4em;
  opacity: .4;
  font-weight: 400;
}
.pricing-card__body { padding: 40px 40px 32px; }
.pricing-card__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}
.pricing-card__list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 15.5px;
  color: var(--c-text);
  line-height: 1.7;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--c-border);
}
.pricing-card__list li:last-child { border-bottom: none; padding-bottom: 0; }
.pricing-card__list li::before {
  content: "";
  flex-shrink: 0;
  width: 8px; height: 8px;
  background: var(--c-gold);
  border-radius: 50%;
  margin-top: 10px;
}
.pricing-card__note {
  font-size: 12px;
  color: var(--c-text-mute);
  text-align: center;
  margin-bottom: 24px;
}
.pricing-card__cta { text-align: center; }

/* ---------- FAQ (Section 7) ---------- */
.faq__list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .25s ease, border-color .25s ease;
}
.faq-item.is-open {
  border-color: var(--c-blue);
  box-shadow: var(--shadow-md);
}
.faq-item__q {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: transparent;
  border: none;
  padding: 20px 24px;
  text-align: left;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--c-navy);
  line-height: 1.7;
  letter-spacing: .02em;
}
.faq-item__q .mark {
  flex-shrink: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--c-blue);
  font-size: 17px;
  width: 24px;
  line-height: 1.4;
}
.faq-item__q .text { flex: 1; }
.faq-item__q .toggle {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--c-light-bluegray);
  display: grid; place-items: center;
  position: relative;
  transition: background .2s ease, transform .3s ease;
}
.faq-item__q .toggle::before,
.faq-item__q .toggle::after {
  content: "";
  position: absolute;
  background: var(--c-navy);
  border-radius: 2px;
  transition: transform .3s ease;
}
.faq-item__q .toggle::before { width: 12px; height: 2px; }
.faq-item__q .toggle::after { width: 2px; height: 12px; }
.faq-item.is-open .faq-item__q .toggle { background: var(--c-blue); }
.faq-item.is-open .faq-item__q .toggle::before,
.faq-item.is-open .faq-item__q .toggle::after { background: #fff; }
.faq-item.is-open .faq-item__q .toggle::after { transform: scaleY(0); }

.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-item__a-inner {
  display: flex;
  gap: 16px;
  padding: 4px 24px 24px 24px;
  font-size: 13.5px;
  color: var(--c-text-sub);
  line-height: 1.95;
  border-top: 1px solid var(--c-border);
  padding-top: 20px;
  margin-top: 0;
}
.faq-item__a-inner .mark {
  flex-shrink: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--c-gold);
  font-size: 20px;
  width: 28px;
  line-height: 1.3;
}

/* ---------- Cases (Section 8) ---------- */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.case-card {
  background: var(--c-light-gray);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  border: 1px solid var(--c-border);
  transition: transform .3s ease, box-shadow .3s ease;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.case-card__quote {
  font-family: var(--font-serif);
  font-size: 56px;
  color: var(--c-blue);
  opacity: .25;
  line-height: 1;
  position: absolute;
  top: 20px; right: 24px;
  font-weight: 700;
}
.case-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.case-card__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-blue), var(--c-navy));
  display: grid; place-items: center;
  color: #fff;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
}
.case-card__info { font-size: 12px; color: var(--c-text-mute); line-height: 1.5; }
.case-card__info strong { display: block; color: var(--c-navy); font-size: 14.5px; font-weight: 700; margin-bottom: 2px; letter-spacing: .02em; }
.case-card__body {
  font-size: 13.5px;
  color: var(--c-text);
  line-height: 1.95;
}
a.case-card--link {
  text-decoration: none;
  color: inherit;
  display: block;
}
a.case-card--link:hover {
  color: inherit;
}
.case-card__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
  font-size: 13px;
  color: var(--c-blue);
  font-weight: 500;
  transition: gap .2s ease;
}
a.case-card--link:hover .case-card__more { gap: 10px; }
.cases__more { text-align: center; }
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--c-blue);
  font-weight: 500;
  font-size: 14px;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color .2s ease, gap .2s ease;
}
.link-arrow:hover { border-bottom-color: var(--c-blue); gap: 12px; }

/* ---------- Column (Section 9) ---------- */
.column__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.column-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease;
  text-decoration: none;
  color: inherit;
}
.column-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  color: inherit;
}
.column-card__thumb {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--c-light-bluegray) 0%, #dbe4f0 100%);
  position: relative;
  overflow: hidden;
}
.column-card__thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(26,107,204,.15) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(184,134,11,.1) 0, transparent 40%);
}
.column-card__thumb-label {
  position: absolute;
  bottom: 14px; left: 18px;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-navy);
  letter-spacing: .15em;
}
.column-card__body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.column-card__date {
  font-size: 12px;
  color: var(--c-text-mute);
  letter-spacing: .1em;
  margin-bottom: 10px;
  font-family: var(--font-serif);
}
.column-card__title {
  font-family: var(--font-serif);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1.7;
  margin-bottom: 12px;
  letter-spacing: .02em;
}
.column-card__excerpt {
  font-size: 13px;
  color: var(--c-text-sub);
  line-height: 1.85;
  margin-bottom: 16px;
  flex: 1;
}
.column-card__more {
  font-size: 13px;
  color: var(--c-blue);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.column__more { text-align: right; }

/* ---------- News (Section 10) ---------- */
.news__list {
  max-width: 820px;
  margin: 0 auto 32px;
  border-top: 1px solid var(--c-border);
}
.news-item {
  display: grid;
  grid-template-columns: 120px 110px 1fr;
  gap: 24px;
  align-items: center;
  padding: 22px 4px;
  border-bottom: 1px solid var(--c-border);
  transition: background .2s ease;
}
.news-item:hover { background: var(--c-light-gray); padding-left: 12px; padding-right: 12px; }
.news-item__date {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-text-mute);
  letter-spacing: .08em;
}
.news-item__tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background: var(--c-blue);
  border-radius: 4px;
  letter-spacing: .04em;
  width: fit-content;
}
.news-item__tag--info { background: var(--c-navy); }
.news-item__tag--recruit { background: var(--c-gold); }
.news-item__title { font-size: 14px; color: var(--c-text); font-weight: 500; line-height: 1.7; letter-spacing: .02em; }
.news__more { max-width: 820px; margin: 0 auto; text-align: right; }

/* ---------- CTA Section (Section 11) ---------- */
.cta-section {
  background:
    radial-gradient(ellipse 60% 80% at 20% 20%, rgba(26,107,204,.3) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 80%, rgba(184,134,11,.15) 0%, transparent 60%),
    linear-gradient(135deg, var(--c-navy) 0%, #0f1a35 100%);
  color: #fff;
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}
.cta-section__inner {
  position: relative;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.cta-section h2 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1.65;
  margin-bottom: 20px;
  letter-spacing: .05em;
}
.cta-section p {
  font-size: 14.5px;
  line-height: 1.95;
  margin-bottom: 40px;
  color: rgba(255,255,255,.8);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Contact (Section 12) ---------- */
.contact-form {
  max-width: 760px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius);
  padding: 48px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-border);
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 10px;
}
.form-group label .req {
  display: inline-block;
  font-size: 10px;
  background: #d63b3b;
  color: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 8px;
  font-weight: 700;
  letter-spacing: .04em;
  vertical-align: middle;
}
.form-group label .opt {
  display: inline-block;
  font-size: 10px;
  background: var(--c-text-mute);
  color: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 8px;
  font-weight: 500;
  letter-spacing: .04em;
  vertical-align: middle;
}
.form-control {
  width: 100%;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 15px;
  color: var(--c-text);
  background: var(--c-white);
  border: 1.5px solid var(--c-border-strong);
  border-radius: 6px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.form-control:focus {
  outline: none;
  border-color: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(26,107,204,.12);
}
textarea.form-control { min-height: 120px; resize: vertical; line-height: 1.7; }
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%231a2a4a' stroke-width='2' fill='none' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 28px;
  font-size: 14px;
  color: var(--c-text);
  line-height: 1.7;
}
.form-check input[type="checkbox"] {
  margin-top: 4px;
  width: 18px; height: 18px;
  accent-color: var(--c-blue);
  flex-shrink: 0;
}
.form-check a { font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }
.form-submit { text-align: center; }
.form-submit .btn { min-width: 280px; }

.form-success {
  display: none;
  background: #e8f5ee;
  border: 1px solid #6fbf8f;
  color: #196e3f;
  padding: 20px 24px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  text-align: center;
  line-height: 1.8;
  font-size: 15px;
}
.form-success.is-visible { display: block; }

/* ---------- Footer ---------- */
.footer {
  background: var(--c-navy);
  color: rgba(255,255,255,.7);
  padding: 64px 0 32px;
  font-size: 13.5px;
  line-height: 1.9;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer__logo {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}
.footer__logo-text {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  color: #fff;
  letter-spacing: .03em;
  line-height: 1;
}
.footer__logo-text sup { font-size: .5em; color: var(--c-blue); vertical-align: super; margin-left: 2px; }
.footer__logo-divider {
  display: inline-block;
  width: 1px;
  height: 14px;
  background: rgba(255,255,255,.25);
  transform: translateY(1px);
}
.footer__logo-sub {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  color: rgba(255,255,255,.6);
  letter-spacing: .2em;
  line-height: 1;
}
.footer__company strong { color: #fff; display: block; margin-bottom: 8px; font-weight: 700; font-size: 14px; }
.footer h4 {
  font-family: var(--font-serif);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .12em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer ul li { margin-bottom: 8px; }
.footer ul li a { color: rgba(255,255,255,.7); }
.footer ul li a:hover { color: #fff; }
.footer__bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: rgba(255,255,255,.5);
}
.footer__bottom-links { display: flex; gap: 20px; }
.footer__bottom-links a { color: rgba(255,255,255,.5); }
.footer__bottom-links a:hover { color: #fff; }

/* =========================================================
   PAGE: Cases List (cases/list.html)
   ========================================================= */

.page-hero {
  background:
    radial-gradient(ellipse 80% 60% at 80% 20%, rgba(26,107,204,.08) 0%, transparent 60%),
    linear-gradient(135deg, var(--c-light-bluegray) 0%, #f8fafc 100%);
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--c-border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,42,74,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,42,74,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, #000 30%, transparent 80%);
  pointer-events: none;
}
.page-hero__inner { position: relative; }
.page-hero__crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--c-text-mute);
  margin-bottom: 20px;
  letter-spacing: .04em;
}
.page-hero__crumbs a { color: var(--c-text-mute); }
.page-hero__crumbs a:hover { color: var(--c-blue); }
.page-hero__crumbs .sep { opacity: .5; }
.page-hero__eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--c-blue);
  font-weight: 500;
  margin-bottom: 12px;
}
.page-hero__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 46px);
  color: var(--c-navy);
  letter-spacing: .02em;
  line-height: 1.4;
  margin-bottom: 20px;
}
.page-hero__lead {
  color: var(--c-text-sub);
  font-size: 16px;
  line-height: 2;
  max-width: 620px;
}

/* ---------- Filter bar ---------- */
.cases-list-section { padding-top: 56px; }

.cases-filter {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
}
.cases-filter__row {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--c-border);
}
.cases-filter__row:last-of-type { border-bottom: none; }
.cases-filter__label {
  flex-shrink: 0;
  width: 140px;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-navy);
  padding-top: 6px;
}
.cases-filter__group { display: flex; align-items: flex-start; gap: 20px; width: 100%; }
.cases-filter__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
}
.chip {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 14px;
  background: var(--c-light-gray);
  border: 1px solid var(--c-border);
  border-radius: 999px;
  font-family: inherit;
  font-size: 13px;
  color: var(--c-text-sub);
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
  min-height: 34px;
}
.chip:hover { border-color: var(--c-blue); color: var(--c-blue); }
.chip.is-active {
  background: var(--c-blue);
  border-color: var(--c-blue);
  color: #fff;
  font-weight: 500;
}
.cases-filter__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 16px;
  margin-top: 8px;
  border-top: 1px solid var(--c-border);
}
.cases-filter__count {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-navy);
}
.cases-filter__reset {
  background: transparent;
  border: none;
  color: var(--c-blue);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 4px;
  transition: background .15s ease;
}
.cases-filter__reset:hover { background: var(--c-light-bluegray); }

/* ---------- Public case cards ---------- */
.cases-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.pub-case-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.pub-case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-blue);
  color: inherit;
}
.pub-case-card__cover {
  position: relative;
  aspect-ratio: 16/8;
  background:
    radial-gradient(circle at 30% 30%, rgba(26,107,204,.18) 0%, transparent 55%),
    radial-gradient(circle at 80% 70%, rgba(184,134,11,.14) 0%, transparent 55%),
    linear-gradient(135deg, #eef2f7 0%, #dbe4f0 100%);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.pub-case-card__cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,42,74,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,42,74,.05) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 20%, transparent 80%);
}
.pub-case-card__cover-mark {
  position: relative;
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-blue), var(--c-navy));
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 32px;
  box-shadow: 0 6px 18px rgba(26,42,74,.2);
}
.pub-case-card__cover-meta {
  position: absolute;
  top: 14px; left: 14px;
  display: flex; gap: 6px; flex-wrap: wrap;
}
.pub-case-card__badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  background: var(--c-navy);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  border-radius: 4px;
}
.pub-case-card__area {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  background: rgba(255,255,255,.95);
  color: var(--c-navy);
  font-size: 11px;
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid var(--c-border);
}
.pub-case-card__body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
}
.pub-case-card__title-row { display: flex; flex-direction: column; gap: 4px; }
.pub-case-card__title {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1.5;
  letter-spacing: .02em;
}
.pub-case-card__contact {
  font-size: 12px;
  color: var(--c-text-mute);
}
.pub-case-card__quote {
  font-size: 14px;
  color: var(--c-text-sub);
  line-height: 1.85;
  padding: 12px 14px;
  background: var(--c-light-gray);
  border-radius: 6px;
  border-left: 3px solid var(--c-blue);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pub-case-card__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.pub-case-card__stat { display: flex; flex-direction: column; gap: 2px; padding: 4px 0; }
.pub-case-card__stat .label { font-size: 10.5px; color: var(--c-text-mute); letter-spacing: .06em; }
.pub-case-card__stat .val {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--c-navy);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.pub-case-card__stat .val small { font-family: var(--font-sans); font-size: 10.5px; font-weight: 400; color: var(--c-text-mute); margin-left: 2px; }
.pub-case-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.pub-case-card__tag {
  display: inline-block;
  font-size: 11px;
  padding: 3px 8px;
  background: var(--c-light-bluegray);
  color: var(--c-navy);
  border-radius: 4px;
  font-weight: 500;
}
.pub-case-card__foot {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 4px;
  margin-top: auto;
}
.pub-case-card__date {
  font-family: var(--font-serif);
  font-size: 11.5px;
  color: var(--c-text-mute);
  letter-spacing: .06em;
}
.pub-case-card__more {
  font-size: 13px;
  font-weight: 500;
  color: var(--c-blue);
  display: inline-flex; align-items: center; gap: 4px;
  transition: gap .2s ease;
}
.pub-case-card:hover .pub-case-card__more { gap: 8px; }

.cases-list-empty {
  padding: 64px 24px;
  text-align: center;
  background: #fff;
  border: 1px dashed var(--c-border-strong);
  border-radius: 8px;
}
.cases-list-empty h3 {
  font-family: var(--font-serif);
  color: var(--c-navy);
  font-size: 18px;
  margin-bottom: 8px;
}
.cases-list-empty p { color: var(--c-text-sub); font-size: 14px; }

@media (max-width: 720px) {
  .page-hero { padding: 48px 0 40px; }
  .cases-list-section { padding-top: 40px; }
  .cases-filter { padding: 16px 18px; }
  .cases-filter__row { flex-direction: column; gap: 10px; }
  .cases-filter__group { flex-direction: column; gap: 10px; }
  .cases-filter__label { width: auto; padding-top: 0; }
  .cases-list-grid { grid-template-columns: 1fr; gap: 20px; }
  .pub-case-card__body { padding: 20px 20px 22px; }
}

/* ---------- Fade animations ---------- */
.fade-up, .fade-left, .fade-right {
  opacity: 0;
  transition: opacity .7s ease, transform .7s ease;
}
.fade-up { transform: translateY(28px); }
.fade-left { transform: translateX(-28px); }
.fade-right { transform: translateX(28px); }
.fade-up.is-visible,
.fade-left.is-visible,
.fade-right.is-visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .section { padding: 72px 0; }
  .section-head { margin-bottom: 40px; }

  .hero { padding: 64px 0 72px; }

  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .service__grid,
  .flow__grid,
  .cases__grid,
  .column__grid { grid-template-columns: 1fr; }
  .flow__grid::before { display: none; }

  .footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 720px) {
  body { font-size: 15px; }
  .container { padding: 0 20px; }
  .section { padding: 56px 0; }
  .section-head { margin-bottom: 32px; }

  /* Hide desktop nav, show hamburger */
  .nav__list, .nav__cta { display: none; }
  .hamburger { display: block; }

  /* Mobile menu */
  .nav.is-open { 
    position: fixed;
    inset: var(--header-h-mobile) 0 0 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    overflow-y: auto;
    z-index: 99;
  }
  .nav.is-open .nav__list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 100%;
  }
  .nav.is-open .nav__list a {
    padding: 16px 20px;
    font-size: 16px;
    border-bottom: 1px solid var(--c-border);
    border-radius: 0;
    min-height: 48px;
    display: flex;
    align-items: center;
  }
  .nav.is-open .nav__cta {
    display: flex;
    margin: 24px 0 0 0;
    width: 100%;
    height: 56px;
    justify-content: center;
  }

  .header__inner { height: var(--header-h-mobile); }
  .logo__wordmark { gap: 8px; }
  .logo__text { font-size: 17px; }
  .logo__sub { font-size: 10px; letter-spacing: .16em; }
  .logo__divider { height: 12px; }

  .topbar__inner { padding: 6px 20px; }
  .topbar { font-size: 11px; }

  .hero { padding: 48px 0 56px; }
  .hero h1 { font-size: 24px; line-height: 1.55; }
  .hero h1 .small { font-size: 13px; margin-top: 16px; }
  .hero__sub { font-size: 14px; line-height: 1.9; }
  .hero__trust { gap: 24px; padding-top: 24px; }
  .hero__trust strong { font-size: 17px; }

  .issues__grid { grid-template-columns: 1fr; }
  .features__grid { grid-template-columns: 1fr; }

  .pricing-card__body { padding: 28px 24px 24px; }
  .pricing-card__header { font-size: 20px; padding: 24px 20px; }

  .faq-item__q { padding: 18px 18px; font-size: 15px; }
  .faq-item__a-inner { padding-left: 18px; padding-right: 18px; }

  .news-item { grid-template-columns: 1fr; gap: 6px; padding: 18px 4px; }
  .news-item__tag { margin-top: 2px; }

  .contact-form { padding: 28px 22px; }

  .footer__inner { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }

  .btn { min-height: 52px; padding: 0 24px; font-size: 15px; width: 100%; max-width: 320px; }
  .hero__ctas .btn { width: auto; }

  .form-submit .btn { min-width: 0; width: 100%; }
}

@media (max-width: 420px) {
  .hero h1 { font-size: 22px; }
  .section-head h2 { font-size: 20px; }
}