/* =========================================
   AI MONBAN — Landing Page Styles
   ========================================= */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:       #5b6af8;
  --primary-dark:  #3d4fd4;
  --primary-light: #eef0ff;
  --accent:        #00d2b0;
  --dark:          #0e0f1a;
  --dark-2:        #13152a;
  --dark-3:        #1c1f3a;
  --gray-bg:       #f6f7fb;
  --gray-1:        #8892a0;
  --gray-2:        #c4cad3;
  --text:          #1a1d2e;
  --text-sub:      #5a6278;
  --white:         #ffffff;
  --border:        #e2e6f0;

  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --shadow-sm:  0 2px 8px rgba(0,0,0,.06);
  --shadow:     0 4px 24px rgba(0,0,0,.10);
  --shadow-lg:  0 12px 48px rgba(0,0,0,.14);

  --font-sans: 'Noto Sans JP', 'Inter', sans-serif;
  --font-en:   'Inter', sans-serif;

  --transition: .25s cubic-bezier(.4,0,.2,1);
}

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

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section--dark {
  background: var(--dark);
  color: var(--white);
}

.section--gray {
  background: var(--gray-bg);
}

.section__label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.section--dark .section__label {
  background: rgba(91,106,248,.2);
  color: #a5b0ff;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 20px;
}

.section__desc {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 48px;
}

.section--dark .section__desc {
  color: #9ba8c4;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn--primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(91,106,248,.35);
}

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

.section--dark .btn--ghost {
  color: var(--white);
  border-color: rgba(255,255,255,.3);
}
.section--dark .btn--ghost:hover {
  border-color: var(--primary);
  color: #a5b0ff;
}

.btn--sm  { font-size: .85rem; padding: 8px 20px; }
.btn--lg  { font-size: 1rem;   padding: 16px 36px; }
.btn--full { width: 100%; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border);
  background: rgba(255,255,255,.96);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 68px;
  padding: 0 24px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  display: block;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: .02em;
}
.logo-text strong { font-weight: 900; }

.header__nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
  margin-right: 24px;
}

.header__nav a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-sub);
  transition: color var(--transition);
}
.header__nav a:hover { color: var(--primary); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 0 80px;
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero__badge {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(0,210,176,.1);
  border: 1px solid rgba(0,210,176,.3);
  border-radius: 100px;
  padding: 6px 18px;
  margin-bottom: 28px;
  letter-spacing: .06em;
}

.hero__title {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -.02em;
}

.hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-sub);
  line-height: 1.85;
  margin-bottom: 44px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 40px;
  box-shadow: var(--shadow);
  width: fit-content;
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 0;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 32px;
}

.stat__num {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat__label {
  font-size: .8rem;
  color: var(--text-sub);
  margin-top: 6px;
  white-space: nowrap;
  text-align: center;
}

.stat__divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Hero Background */
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(91,106,248,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91,106,248,.06) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .25;
}
.hero__glow--1 {
  width: 600px; height: 600px;
  top: -200px; left: -100px;
  background: var(--primary);
}
.hero__glow--2 {
  width: 400px; height: 400px;
  bottom: -100px; right: -50px;
  background: var(--accent);
}

/* ---------- Problem ---------- */
.problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.problem__card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.problem__card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

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

.problem__num {
  font-family: var(--font-en);
  font-size: .75rem;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 100px;
  padding: 3px 12px;
  display: inline-block;
  margin-bottom: 16px;
  letter-spacing: .08em;
}

.problem__card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.problem__card p {
  font-size: .95rem;
  color: var(--text-sub);
  line-height: 1.7;
}

.problem__cta {
  margin-top: 40px;
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-sub);
}
.problem__cta strong { color: var(--text); }

/* ---------- Capabilities ---------- */
.cap__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.cap__card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  position: relative;
  transition: border-color var(--transition), background var(--transition);
}

.cap__card:hover {
  border-color: rgba(255,255,255,.25);
  background: rgba(255,255,255,.08);
}

.cap__card--accent {
  border-color: var(--primary);
  background: rgba(91,106,248,.12);
}

.cap__num {
  font-family: var(--font-en);
  font-size: .75rem;
  font-weight: 800;
  color: #6b7aab;
  letter-spacing: .1em;
  margin-bottom: 12px;
}

.cap__icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.cap__card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}

.cap__desc {
  font-size: .9rem;
  color: #9ba8c4;
  line-height: 1.75;
  margin-bottom: 20px;
}

.cap__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
}

.cap__list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: .85rem;
  color: #c4cad3;
  line-height: 1.5;
}

.cap__list li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

.cap__badge {
  display: inline-block;
  margin-top: 20px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0,210,176,.12);
  border: 1px solid rgba(0,210,176,.3);
  border-radius: 100px;
  padding: 4px 12px;
}

/* Masking block */
.masking__block {
  margin-top: 64px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  text-align: center;
}

.masking__label {
  display: inline-block;
  font-size: .85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: .04em;
}

.masking__title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 36px;
}

.masking__flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.masking__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.masking__step-label {
  font-size: .75rem;
  font-weight: 700;
  color: #6b7aab;
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.masking__box {
  border-radius: var(--radius);
  padding: 12px 20px;
  font-size: .88rem;
  font-family: var(--font-en);
  line-height: 1.5;
  max-width: 260px;
  text-align: left;
}

.masking__box--input {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  color: #c4cad3;
}

.masking__box--masked {
  background: rgba(91,106,248,.15);
  border: 1px solid var(--primary);
  color: #c5cbff;
}

.masking__box--ai {
  background: rgba(0,210,176,.12);
  border: 1px solid rgba(0,210,176,.3);
  color: var(--accent);
  font-weight: 700;
  text-align: center;
  padding: 20px;
}

.mask {
  background: rgba(91,106,248,.4);
  border-radius: 3px;
  padding: 1px 4px;
  color: #a5b0ff;
  font-weight: 700;
}

.masking__arrow {
  font-size: 1.4rem;
  color: #6b7aab;
  flex-shrink: 0;
}

.masking__note {
  font-size: .85rem;
  color: #6b7aab;
  margin-top: 4px;
}

.masking__cases {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-top: 16px;
}

.masking__case {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 24px;
}

.masking__case-label {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  color: var(--primary-light);
  background: rgba(91,106,248,.15);
  border: 1px solid rgba(91,106,248,.3);
  border-radius: 4px;
  padding: 3px 10px;
  margin-bottom: 16px;
}

.masking__case-note {
  font-size: .82rem;
  color: #6b7aab;
  margin-top: 12px;
  line-height: 1.6;
}

/* ---------- Architecture (new) ---------- */
.arch-diagram {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.arch-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  width: 100%;
}

.arch-row--top,
.arch-row--bottom {
  gap: 48px;
}

.arch-row--mid {
  gap: 120px;
  padding: 8px 0;
}

.arch-col {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  min-width: 180px;
  text-align: center;
}

.arch-col__label {
  font-size: .75rem;
  font-weight: 700;
  color: var(--text-sub);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.arch-col__items {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.arch-col__item {
  background: var(--gray-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 12px;
  font-size: .82rem;
  font-weight: 500;
}

.arch-col__item--more {
  color: var(--text-sub);
  font-style: italic;
}

.arch-col--saas .arch-col__label  { color: var(--primary); }
.arch-col--internal .arch-col__label { color: var(--accent); }

.arch-spacer { width: 48px; }

.arch-monban {
  background: linear-gradient(135deg, var(--primary-light) 0%, #e8fff9 100%);
  border: 2px solid var(--primary);
  border-radius: var(--radius-xl);
  padding: 28px 48px;
  text-align: center;
  box-shadow: var(--shadow);
}

.arch-monban__name {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 14px;
  letter-spacing: .04em;
}

.arch-monban__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.arch-monban__tags span {
  background: var(--primary);
  color: var(--white);
  border-radius: 100px;
  padding: 4px 14px;
  font-size: .78rem;
  font-weight: 700;
}

.arch-arrow {
  font-size: .85rem;
  color: var(--text-sub);
  font-weight: 600;
  white-space: nowrap;
}

/* ---------- Architecture v2 ---------- */
.arch2 {
  margin-top: 48px;
  background: #f3f5ff;
  border: 1px solid rgba(91,106,248,.14);
  border-radius: var(--radius-xl);
  padding: 40px 32px 32px;
}

.arch2__flow {
  display: flex;
  align-items: center;
  gap: 0;
}

.arch2__node {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  flex-shrink: 0;
}

.arch2__node-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.arch2__node-label {
  font-size: .8rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: .04em;
}

.arch2__node-chips {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.arch2__node-chips span {
  background: var(--gray-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: .75rem;
  color: var(--text-sub);
  white-space: nowrap;
}

.arch2__chip--more { font-style: italic; }

/* AI MONBAN center node */
.arch2__node--monban {
  background: linear-gradient(135deg, #ecedff 0%, #e6fff9 100%);
  border: 2px solid var(--primary);
  flex: 1;
  padding: 24px 20px;
  box-shadow: 0 4px 24px rgba(91,106,248,.14);
  gap: 14px;
}

.arch2__monban-name {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: .06em;
}

.arch2__monban-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
  width: 100%;
}

.arch2__monban-item {
  background: rgba(91,106,248,.1);
  border: 1px solid rgba(91,106,248,.2);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-size: .73rem;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

/* Edge connectors */
.arch2__edge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
  flex-shrink: 0;
}

.arch2__edge-badge {
  background: rgba(91,106,248,.1);
  border: 1px solid rgba(91,106,248,.25);
  color: var(--primary);
  border-radius: 100px;
  padding: 3px 10px;
  font-size: .68rem;
  font-weight: 700;
  white-space: nowrap;
}

.arch2__edge-arrow::after {
  content: '→';
  font-size: 1.5rem;
  color: var(--primary);
  font-weight: 300;
  display: block;
  line-height: 1;
}

.arch2__edge-label {
  font-size: .68rem;
  color: var(--text-sub);
  white-space: nowrap;
}

/* Mid data connector */
.arch2__mid-conn {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0 20px;
}

.arch2__mid-line {
  flex: 1;
  height: 1px;
  background: rgba(91,106,248,.2);
}

.arch2__mid-badge {
  font-size: .74rem;
  color: var(--primary);
  font-weight: 600;
  background: rgba(91,106,248,.08);
  border: 1px solid rgba(91,106,248,.2);
  border-radius: 100px;
  padding: 6px 18px;
  white-space: nowrap;
}

/* Data source nodes */
.arch2__sources {
  display: flex;
  gap: 20px;
}

.arch2__sources .arch2__node { flex: 1; }

.arch2__node--saas .arch2__node-label    { color: var(--primary); }
.arch2__node--internal .arch2__node-label { color: var(--accent); }

/* ---------- Governance ---------- */
.gov__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.gov__card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.gov__card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  border-color: var(--primary);
}

.gov__icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.gov__card h3 {
  font-size: .95rem;
  font-weight: 800;
  margin-bottom: 8px;
  line-height: 1.4;
}

.gov__card p {
  font-size: .88rem;
  color: var(--text-sub);
  line-height: 1.7;
}

.coming-tag {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--accent);
  background: rgba(0,210,176,.1);
  border: 1px solid rgba(0,210,176,.3);
  border-radius: 100px;
  padding: 2px 8px;
  vertical-align: middle;
  margin-left: 4px;
}

/* ---------- Solution / Architecture ---------- */
.arch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-top: 56px;
  flex-wrap: wrap;
  gap: 8px;
}

.arch__col {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 24px 20px;
  min-width: 160px;
  width: 200px;
  text-align: center;
}

.arch__col--monban {
  background: rgba(91,106,248,.2);
  border-color: var(--primary);
  padding: 28px 24px;
  transform: scale(1.04);
}

.arch__label {
  font-size: .8rem;
  color: #9ba8c4;
  margin-bottom: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.arch__items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.arch__item {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: .85rem;
  font-weight: 500;
}

.arch__item--more {
  color: var(--gray-1);
  font-style: italic;
}

.arch__badge {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: .04em;
}

.arch__functions {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.arch__functions span {
  background: rgba(91,106,248,.3);
  border: 1px solid rgba(91,106,248,.5);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: .8rem;
  color: #c5cbff;
  font-weight: 600;
}

.arch__arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
}

.arch__arrow-line {
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.arch__arrow-label {
  font-size: .7rem;
  color: #6b7aab;
  white-space: nowrap;
  font-weight: 600;
  letter-spacing: .04em;
}

/* ---------- Features ---------- */
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.feature-card--wide {
  grid-column: span 2;
}

.feature-card--accent {
  background: linear-gradient(135deg, #f0f2ff 0%, #edf8f6 100%);
  border-color: rgba(91,106,248,.2);
}

.feature-card__tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 100px;
  padding: 3px 10px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: .95rem;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 20px;
}

.feature-card__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-card__chips span {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-sub);
  background: var(--gray-bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px 12px;
}

.feature-card__icon-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.ai-badge {
  font-size: .8rem;
  font-weight: 700;
  border-radius: 100px;
  padding: 5px 14px;
}
.ai-badge--gpt    { background: #d4edda; color: #1a7a34; }
.ai-badge--claude { background: #fff0e0; color: #a65200; }
.ai-badge--genspark { background: #e0eeff; color: #1450a0; }

.feature-card__diagram {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
}
.feature-card__diagram span {
  font-size: .9rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
}
.feature-card__diagram .arrow {
  background: none;
  padding: 0;
  color: var(--gray-2);
}

/* Log sample */
.log-sample {
  background: var(--dark-2);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.log-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  font-family: var(--font-en);
  flex-wrap: wrap;
}

.log-user  { color: #a5b0ff; font-weight: 600; min-width: 72px; }
.log-ai    { color: var(--accent); font-weight: 600; min-width: 56px; }
.log-tool  { color: #7a8ab4; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Coming Soon */
.features__coming {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.coming__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.coming__item {
  background: var(--gray-bg);
  border: 1px dashed var(--gray-2);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  opacity: .75;
  transition: opacity var(--transition);
}
.coming__item:hover { opacity: 1; }

.coming__icon { font-size: 2rem; margin-bottom: 12px; display: block; }
.coming__item h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.coming__item p  { font-size: .88rem; color: var(--text-sub); line-height: 1.65; }

/* ---------- Use Cases ---------- */
.usecases__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.usecase {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.usecase::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.usecase__num {
  font-family: var(--font-en);
  font-size: .8rem;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 100px;
  padding: 3px 12px;
  display: inline-block;
  margin-bottom: 14px;
  letter-spacing: .08em;
}

.usecase__dept {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  border: 1px solid rgba(91,106,248,.25);
  border-radius: 100px;
  padding: 4px 14px;
  margin-bottom: 14px;
  letter-spacing: .04em;
}

.usecase__quote {
  margin-top: 16px;
  padding: 14px 18px;
  background: var(--gray-bg);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .9rem;
  color: var(--text-sub);
  font-style: italic;
  line-height: 1.6;
}

.usecase h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.4;
}

.usecase p {
  font-size: .95rem;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 16px;
}

.usecase__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.usecase__tags span {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-sub);
  background: var(--gray-bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px 10px;
}

/* ---------- Why ---------- */
.why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.why__card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.why__card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
  border-color: var(--primary);
}

.why__icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.why__card h3 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 10px;
  line-height: 1.4;
}

.why__card p {
  font-size: .9rem;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ---------- Pricing ---------- */
.pricing__cards {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 48px;
}

.pricing__cards--3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}

.pricing__plan-desc {
  font-size: .85rem;
  color: #6b7aab;
  line-height: 1.6;
  margin-bottom: 24px;
  min-height: 48px;
}

.pricing__soon {
  font-size: .72rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(0,210,176,.12);
  border: 1px solid rgba(0,210,176,.3);
  border-radius: 100px;
  padding: 2px 8px;
  vertical-align: middle;
  margin-left: 4px;
}

.pricing__card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  width: 100%;
  position: relative;
  transition: border-color var(--transition);
}

.pricing__card:hover {
  border-color: rgba(255,255,255,.25);
}

.pricing__card--featured {
  background: rgba(91,106,248,.15);
  border-color: var(--primary);
}

.pricing__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  font-size: .75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 100px;
  letter-spacing: .08em;
  white-space: nowrap;
}

.pricing__tier {
  font-family: var(--font-en);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #9ba8c4;
  margin-bottom: 12px;
}

.pricing__price {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 28px;
  line-height: 1;
}

.pricing__list {
  list-style: none;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .9rem;
  color: #c4cad3;
  line-height: 1.5;
}

.pricing__list li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .05em;
}

.pricing__note {
  text-align: center;
  font-size: .9rem;
  color: #6b7aab;
  margin-top: 32px;
  line-height: 1.7;
}

/* ---------- FAQ ---------- */
.faq__list {
  max-width: 800px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq__item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq__item:has(.faq__question[aria-expanded="true"]) {
  border-color: var(--primary);
}

.faq__question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 28px;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  transition: color var(--transition);
}

.faq__question:hover { color: var(--primary); }

.faq__icon {
  font-size: 1.4rem;
  line-height: 1;
  color: var(--gray-2);
  flex-shrink: 0;
  transition: transform var(--transition), color var(--transition);
  font-style: normal;
}

.faq__question[aria-expanded="true"] .faq__icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq__answer.open {
  max-height: 600px;
}

.faq__answer > p {
  padding: 0 28px 24px;
  font-size: .95rem;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ---------- Contact ---------- */
.contact__inner {
  max-width: 720px;
  margin: 0 auto;
}

.contact__form-hubspot {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px;
  margin-top: 48px;
  box-shadow: var(--shadow);
}

.contact__form-hubspot .hs-form-field {
  margin-bottom: 20px;
}

.contact__form-hubspot label {
  display: block;
  font-size: .9rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.contact__form-hubspot .hs-form-required {
  color: #e03c3c;
  margin-left: 4px;
}

.contact__form-hubspot input[type="text"],
.contact__form-hubspot input[type="email"],
.contact__form-hubspot input[type="tel"],
.contact__form-hubspot input[type="number"],
.contact__form-hubspot input[type="url"],
.contact__form-hubspot select,
.contact__form-hubspot textarea {
  font-family: var(--font-sans);
  font-size: .95rem;
  color: var(--text);
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
  box-sizing: border-box;
  appearance: none;
  -webkit-appearance: none;
}

.contact__form-hubspot textarea {
  resize: vertical;
  min-height: 120px;
}

.contact__form-hubspot select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235a6278' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

.contact__form-hubspot input:focus,
.contact__form-hubspot select:focus,
.contact__form-hubspot textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(91,106,248,.15);
}

.contact__form-hubspot .hs-error-msgs,
.contact__form-hubspot .hs-error-msg {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  font-size: .82rem;
  color: #e03c3c;
}

.contact__form-hubspot .hs-form-booleancheckbox-display,
.contact__form-hubspot .hs-form-checkbox-display,
.contact__form-hubspot .hs-form-radio-display {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: .9rem;
  color: var(--text-sub);
  font-weight: 400;
}

.contact__form-hubspot .hs-form-booleancheckbox-display input,
.contact__form-hubspot .hs-form-checkbox-display input,
.contact__form-hubspot .hs-form-radio-display input {
  margin-top: 3px;
  accent-color: var(--primary);
}

.contact__form-hubspot a {
  color: var(--primary);
  text-decoration: underline;
}

.contact__form-hubspot .hs-submit {
  margin-top: 8px;
}

.contact__form-hubspot .hs-button {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  background: var(--primary);
  border: none;
  border-radius: var(--radius);
  padding: 16px 24px;
  width: 100%;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.contact__form-hubspot .hs-button:hover {
  background: var(--primary-dark, #4654d6);
  transform: translateY(-1px);
}

.contact__form-hubspot .submitted-message {
  text-align: center;
  padding: 24px 0;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--dark);
  color: var(--white);
  padding-top: 64px;
}

.footer__inner {
  display: flex;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  flex-wrap: wrap;
}

.footer__brand {
  flex: 0 0 260px;
}

.footer__brand .logo-text { color: var(--white); }

.footer__brand p {
  margin-top: 16px;
  font-size: .88rem;
  color: #6b7aab;
  line-height: 1.7;
}

.footer__links {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  flex: 1;
  justify-content: flex-end;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__col h4 {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #6b7aab;
  margin-bottom: 4px;
}

.footer__col a {
  font-size: .9rem;
  color: #9ba8c4;
  transition: color var(--transition);
}
.footer__col a:hover { color: var(--white); }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: .85rem;
  color: #4a5470;
  flex-wrap: wrap;
  gap: 12px;
}

.footer__legal {
  display: flex;
  gap: 20px;
}
.footer__legal a { color: #4a5470; transition: color var(--transition); }
.footer__legal a:hover { color: #9ba8c4; }

/* ---------- Responsive ---------- */
.sp-br { display: none; }

@media (max-width: 1024px) {
  .cap__grid      { grid-template-columns: 1fr 1fr; }
  .cap__card:last-child { grid-column: span 2; }
  .why__grid      { grid-template-columns: repeat(2, 1fr); }
  .gov__grid      { grid-template-columns: repeat(2, 1fr); }
  .problem__grid  { grid-template-columns: 1fr; }
  .pricing__cards--3 { grid-template-columns: 1fr 1fr; }
  .pricing__cards--3 .pricing__card--featured { grid-column: span 2; }

  /* Architecture v2 — medium screens */
  .arch2__edge { padding: 0 4px; }
  .arch2__edge-badge { font-size: .63rem; padding: 2px 7px; }
  .arch2__mid-badge { font-size: .7rem; padding: 5px 12px; }
  .arch2__monban-item { font-size: .68rem; padding: 6px 7px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .sp-br { display: inline; }

  /* Header */
  .header__nav { display: none; }
  .header__nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px 24px;
    gap: 16px;
    box-shadow: var(--shadow);
    z-index: 899;
  }
  .header__inner > .btn { display: none; }
  .hamburger { display: flex; }

  /* Hero */
  .hero { min-height: auto; padding: 56px 0 56px; }
  .hero__stats {
    width: 100%;
    padding: 16px 8px;
    border-radius: var(--radius);
  }
  .stat { padding: 0 12px; }
  .stat__num { font-size: 1.4rem; }
  .stat__label { font-size: .72rem; white-space: normal; }

  /* Grids → single column */
  .cap__grid      { grid-template-columns: 1fr; }
  .cap__card:last-child { grid-column: span 1; }
  .usecases__grid { grid-template-columns: 1fr; }
  .why__grid      { grid-template-columns: 1fr; }
  .gov__grid      { grid-template-columns: 1fr 1fr; }

  /* Architecture (legacy) */
  .arch-row--top,
  .arch-row--bottom { flex-direction: column; gap: 16px; }
  .arch-row--mid    { gap: 32px; }
  .arch-spacer      { display: none; }
  .arch-monban      { padding: 20px 24px; }
  .arch-col         { width: 100%; max-width: 320px; }

  /* Architecture v2 */
  .arch2 { padding: 28px 20px 24px; }
  .arch2__flow { flex-direction: column; align-items: stretch; }
  .arch2__node { width: auto; }
  .arch2__edge {
    flex-direction: row;
    justify-content: center;
    padding: 6px 0;
    gap: 10px;
  }
  .arch2__edge-arrow::after { content: '↓'; }
  .arch2__edge-label { order: -1; }
  .arch2__mid-badge { white-space: normal; text-align: center; }
  .arch2__sources { flex-direction: column; }

  /* Masking flow */
  .masking__flow  { flex-direction: column; }
  .masking__arrow { transform: rotate(90deg); }
  .masking__block { padding: 32px 20px; }

  /* Form */
  .contact__form-hubspot {
    padding: 28px 20px;
    border-radius: var(--radius-lg);
  }

  /* FAQ */
  .faq__question {
    padding: 18px 20px;
    font-size: .95rem;
  }
  .faq__answer > p {
    padding: 0 20px 20px;
  }

  /* Pricing */
  .pricing__cards,
  .pricing__cards--3 {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: center;
  }
  .pricing__card { padding: 36px 28px; }
  .pricing__plan-desc { min-height: unset; }

  /* Footer */
  .footer__inner { flex-direction: column; gap: 40px; }
  .footer__brand { flex: none; }
  .footer__links { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .section { padding: 56px 0; }
  .container { padding: 0 16px; }
  .header__inner { padding: 0 16px; }

  /* Hero */
  .hero { padding: 48px 0 48px; }
  .hero__title { font-size: clamp(1.75rem, 8vw, 2.2rem); letter-spacing: -.01em; }
  .hero__sub { font-size: .95rem; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { text-align: center; }
  .hero__stats {
    flex-direction: column;
    gap: 16px;
    padding: 20px 16px;
    width: 100%;
  }
  .stat { padding: 0; }
  .stat__divider { width: 80%; height: 1px; }
  .stat__label { white-space: normal; font-size: .78rem; }

  /* Cards */
  .problem__card,
  .cap__card,
  .usecase,
  .why__card,
  .gov__card { padding: 24px 20px; }

  /* Governance */
  .gov__grid { grid-template-columns: 1fr; }

  /* Contact */
  .contact__form-hubspot { padding: 24px 16px; border-radius: var(--radius); }

  /* Footer */
  .footer__links { gap: 32px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}