:root {
  --color-navy: #123263;
  --color-primary: #1868db;
  --color-primary-light: #4688ec;
  --color-accent: #fbc828;
  --color-surface-blue: #e9f2fe;
  --color-border: #cfe1fd;
  --color-text: #292a2e;
  --color-text-muted: #505258;
  --color-white: #ffffff;
  --shadow-navy: rgba(18, 50, 99, 0.12);
  --shadow-primary: rgba(24, 104, 219, 0.19);
  --font-body: "Noto Sans JP", sans-serif;
  --font-display: "Oswald", sans-serif;
  --header-height: 80px;
}

/* =================================================
  Base
================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--color-text);
  background-color: var(--color-white);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
p,
ul,
figure {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

h2 {
  color: var(--color-navy);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.75;
  letter-spacing: 0.04em;
}

h3 {
  color: var(--color-navy);
  font-size: 24px;
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: 0.04em;
}

p {
  line-height: 1.8;
}

.cmn-text-center {
  text-align: center;
}

.cmn-text-color-primary {
  color: var(--color-primary);
}

.pc-block {
  display: block;
}

.sp-block {
  display: none;
}

.inner {
  margin: 0 auto;
  max-width: 1160px;
}

.container-narrow {
  margin: 0 auto;
  max-width: 928px;
}

.section {
  padding: 0 24px;
  margin: 70px auto;
}

.section-lead {
  margin-top: 8px;
  color: var(--color-text-muted);
}

._section-body {
  margin-top: 40px;
}

@media (max-width: 768px) {
  h2 {
    font-size: 24px;
  }

  h3 {
    font-size: 18px;
  }

  .pc-block {
    display: none;
  }

  .sp-block {
    display: block;
  }

  .inner,
  .container-narrow {
    max-width: 89.06vw;
    width: 100%;
  }

  .section {
    padding: 0;
    margin: 40px auto;
  }

  ._section-body {
    margin-top: 24px;
  }
}

/* =================================================
  Button
================================================= */
a[class*="btn-"] {
  border-radius: 100px;
  padding: 20px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.25;
  text-align: center;
  min-width: 264px;
  display: grid;
  place-content: center;
  transition: all 0.2s ease;
}

@media (hover: hover) {
  a[class*="btn-"]:hover {
    transform: translateY(2px);
    opacity: 0.8;
  }
}

a.button-small {
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  min-width: initial;
  height: fit-content;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text);
}

.btn-secondary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

@media (max-width: 768px) {
  a[class*="btn-"] {
    width: 100%;
    min-width: initial;
  }

  a.button-small {
    width: auto;
    padding: 10px 16px;
  }
}

/* =================================================
  Header
================================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background-color: var(--color-white);
  box-shadow: 0 4px 10px 0 var(--shadow-navy);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1232px;
  height: var(--header-height);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand__mark {
  position: relative;
  width: 34px;
  height: 34px;
  overflow: hidden;
  border-radius: 10px;
  background-color: var(--color-navy);
  box-shadow: 0 8px 20px rgba(18, 50, 99, 0.16);
}

.brand__mark::before,
.brand__mark::after,
.brand__mark span {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.brand__mark::before {
  left: 7px;
  top: 7px;
  border: 3px solid var(--color-white);
}

.brand__mark::after {
  right: 7px;
  bottom: 7px;
  background-color: var(--color-accent);
}

.brand__name {
  color: var(--color-navy);
  font: 600 24px/1 var(--font-display);
  letter-spacing: 0.025em;
}

.brand__by {
  margin-left: 2px;
  color: var(--color-text-muted);
  font-size: 10px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav__links a {
  display: flex;
  align-items: center;
  height: var(--header-height);
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: border-color 0.25s ease-in-out;
}

@media (hover: hover) {
  .site-nav__links a:hover {
    border-color: var(--color-primary);
  }
}

@media (max-width: 1049px) {
  :root {
    --header-height: 62px;
  }

  .site-header__inner {
    padding: 0 16px;
  }
}

@media (max-width: 767px) {
  .brand__by,
  .site-nav__links {
    display: none;
  }
}

/* =================================================
  Main visual
================================================= */
@keyframes mv-fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes mv-scale-in {
  from {
    opacity: 0;
    transform: scale(1.04);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.mainvisual {
  padding: calc(var(--header-height) + 40px) 24px 40px;
  overflow: hidden;
  background:
    linear-gradient(rgba(24, 104, 219, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 104, 219, 0.055) 1px, transparent 1px),
    radial-gradient(circle at 82% 5%, rgba(70, 136, 236, 0.28), transparent 30%),
    linear-gradient(180deg, var(--color-white), var(--color-surface-blue));
  background-size: 32px 32px, 32px 32px, auto, auto;
}

.mainvisual__inner {
  max-width: 1160px;
  min-height: 560px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  align-items: center;
  gap: 48px;
}

.mainvisual__body > * {
  animation: mv-fade-up 0.6s ease both;
}

.mainvisual__body > :nth-child(2) {
  animation-delay: 0.1s;
}

.mainvisual__body > :nth-child(3) {
  animation-delay: 0.25s;
}

.mainvisual__body > :nth-child(4) {
  animation-delay: 0.4s;
}

.mainvisual__body > :nth-child(5) {
  animation-delay: 0.55s;
}

.eyebrow {
  margin-bottom: 20px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-primary-light);
  font: 600 13px/1 var(--font-display);
  letter-spacing: 0.15em;
}

.eyebrow::before {
  content: "";
  width: 32px;
  height: 3px;
  border-radius: 99px;
  background-color: var(--color-accent);
}

.mainvisual__title {
  color: var(--color-navy);
  font-size: clamp(32px, 2.9vw, 42px);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.02em;
}

.mainvisual__title ._line {
  display: block;
}

.mainvisual__title strong {
  position: relative;
  z-index: 0;
  display: inline-block;
  color: var(--color-primary);
  font-weight: 700;
}

.mainvisual__title strong::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 8px;
  z-index: -1;
  border-radius: 99px;
  background-color: rgba(251, 200, 40, 0.42);
}

.mainvisual__lead {
  margin-top: 24px;
  color: var(--color-text-muted);
  line-height: 2;
}

.mainvisual__cta {
  margin-top: 32px;
  display: flex;
  gap: 16px;
}

.mainvisual__cta a {
  white-space: nowrap;
}

.mainvisual__note {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.mainvisual__note span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
  box-shadow: 0 0 0 5px rgba(251, 200, 40, 0.13);
}

/* ---- product stage (main visual) ---- */
.product-stage {
  position: relative;
  min-width: 0;
  padding: 42px 0 34px;
  animation: mv-scale-in 1s ease both 0.3s;
}

.product-stage::before {
  content: "";
  position: absolute;
  inset: 0 2% 0 8%;
  border-radius: 38px;
  background: linear-gradient(135deg, var(--color-navy), var(--color-primary-light));
  box-shadow: 0 34px 70px rgba(24, 104, 219, 0.24);
  transform: rotate(2.5deg);
}

.product-stage .product-window {
  width: calc(100% + 52px);
  transform: translateX(-34px);
}

.stage-orb {
  position: absolute;
  z-index: 3;
  border-radius: 50%;
  box-shadow: 0 10px 22px rgba(24, 104, 219, 0.18);
}

.stage-orb--blue {
  width: 34px;
  height: 34px;
  top: 12px;
  right: 8px;
  background-color: var(--color-primary-light);
}

.stage-orb--accent {
  width: 52px;
  height: 52px;
  right: 22px;
  bottom: 4px;
  background-color: var(--color-accent);
}

@media (max-width: 1023px) {
  .mainvisual__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    min-height: auto;
  }

  .mainvisual__body {
    max-width: 720px;
  }

  .product-stage {
    width: min(720px, 100%);
    margin-inline: auto;
  }
}

@media (max-width: 768px) {
  .mainvisual {
    padding: calc(var(--header-height) + 28px) 20px 32px;
  }

  .mainvisual__inner {
    gap: 32px;
  }

  .mainvisual__title {
    font-size: clamp(30px, 8.6vw, 40px);
    line-height: 1.42;
  }

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

  .product-stage {
    padding: 24px 0 22px;
  }

  .product-stage::before {
    inset: 0 0 0 5%;
  }

  .product-stage .product-window {
    width: calc(100% + 18px);
    transform: translateX(-9px);
  }

  .stage-orb--blue {
    right: -6px;
  }
}

/* =================================================
  Product window (screen mock)
================================================= */
.product-window {
  position: relative;
  z-index: 2;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 18px;
  background-color: var(--color-white);
  box-shadow: 0 28px 60px var(--shadow-primary);
}

.product-window__bar {
  height: 44px;
  padding: 0 16px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background-color: var(--color-white);
  font-size: 11px;
  font-weight: 600;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-border);
}

.window-status {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 6px;
}

.window-status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.product-window__body {
  height: 390px;
  display: grid;
  grid-template-columns: 132px 1fr;
}

.mock-sidebar {
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: rgba(255, 255, 255, 0.82);
  background-color: var(--color-navy);
  font-size: 9px;
}

.mock-logo {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--color-white);
  font: 600 13px/1 var(--font-display);
}

.mock-logo span {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background-color: var(--color-accent);
}

.mock-sidebar p {
  margin: 14px 8px 3px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 8px;
  line-height: 1.5;
  letter-spacing: 0.08em;
}

.mock-nav {
  padding: 8px;
  display: flex;
  align-items: center;
  gap: 7px;
  border-radius: 7px;
  line-height: 1.4;
}

.mock-nav i {
  width: 8px;
  height: 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
}

.mock-nav.is-active {
  color: var(--color-text);
  background-color: var(--color-accent);
  font-weight: 700;
}

.mock-main {
  min-width: 0;
  padding: 26px 24px;
  background-color: var(--color-surface-blue);
}

.mock-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  line-height: 1.4;
}

.mock-heading small {
  color: var(--color-text-muted);
  font-size: 8px;
}

.mock-heading__title {
  margin-top: 3px;
  color: var(--color-navy);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.2;
}

.mock-pill {
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--color-navy);
  background-color: var(--color-white);
  font-size: 8px;
  font-weight: 600;
  line-height: 1;
}

.mock-kpis {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.mock-kpis div {
  min-width: 0;
  padding: 13px 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background-color: var(--color-white);
  line-height: 1.4;
}

.mock-kpis span {
  display: block;
  color: var(--color-text-muted);
  font-size: 7px;
}

.mock-kpis strong {
  color: var(--color-navy);
  font: 600 21px/1.4 var(--font-display);
}

.mock-kpis small {
  margin-left: 3px;
  color: var(--color-text-muted);
  font-size: 7px;
}

.mock-kpis .is-alert strong {
  color: var(--color-primary);
}

.mock-table {
  margin-top: 14px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background-color: var(--color-white);
  font-size: 8px;
  line-height: 1.4;
}

.mock-table > div {
  min-height: 43px;
  padding: 0 12px;
  display: grid;
  grid-template-columns: 2fr 0.65fr 0.65fr 0.72fr;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--color-border);
}

.mock-table > div:last-child {
  border-bottom: 0;
}

.mock-table__head {
  min-height: 32px;
  color: var(--color-text-muted);
  background-color: var(--color-surface-blue);
  font-size: 7px;
}

.mock-table b {
  color: var(--color-primary);
}

.mock-table em {
  width: fit-content;
  padding: 4px 7px;
  border-radius: 999px;
  color: var(--color-navy);
  background-color: var(--color-border);
  font-style: normal;
  font-weight: 600;
}

.mock-table em.is-review {
  color: var(--color-text);
  background-color: rgba(251, 200, 40, 0.4);
}

@media (max-width: 720px) {
  .product-window__body {
    height: 300px;
    grid-template-columns: 78px 1fr;
  }

  .mock-sidebar {
    padding: 14px 7px;
  }

  .mock-sidebar p,
  .mock-nav {
    font-size: 0;
  }

  .mock-nav {
    min-height: 28px;
    justify-content: center;
  }

  .mock-logo {
    font-size: 0;
    justify-content: center;
  }

  .mock-main {
    padding: 18px 12px;
  }

  .mock-kpis div {
    padding: 9px;
  }

  .mock-kpis strong {
    font-size: 17px;
  }

  .mock-table > div {
    grid-template-columns: 1.6fr 0.65fr 0.72fr;
  }

  .mock-table > div > :nth-child(2) {
    display: none;
  }
}

/* =================================================
  Demo video
================================================= */
.demo-player {
  position: relative;
  padding: clamp(24px, 4vw, 56px);
  overflow: hidden;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--color-navy), var(--color-primary-light));
  box-shadow: 0 28px 60px var(--shadow-primary);
}

.demo-player video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  background-color: var(--color-navy);
}

@media (max-width: 768px) {
  .demo-player {
    padding: 12px;
    border-radius: 18px;
  }

  .demo-player video {
    border-radius: 8px;
  }
}

/* =================================================
  Problem
================================================= */
.section-problem {
  padding: 70px 24px;
  background-color: var(--color-surface-blue);
}

.problem-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  padding: 32px 28px;
  border: 1px solid var(--color-border);
  border-radius: 24px;
  background-color: var(--color-white);
}

.problem-card__num {
  display: block;
  color: var(--color-primary);
  font: 500 28px/1 var(--font-display);
  letter-spacing: 0.05em;
}

.problem-card h3 {
  margin-top: 14px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
}

.problem-card p {
  margin-top: 12px;
  color: var(--color-text-muted);
  font-size: 15px;
}

@media (max-width: 768px) {
  .section-problem {
    padding: 40px 0;
  }

  .problem-list {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin-inline: auto;
    gap: 16px;
  }

  .problem-card {
    padding: 24px 20px;
  }

  .problem-card h3 {
    font-size: 18px;
  }
}

/* =================================================
  Features (value)
================================================= */
.section-features {
  overflow: hidden;
}

.section-features ._items {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.section-features ._item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: min-content auto;
  grid-template-areas:
    "visual header"
    "visual body";
  column-gap: 48px;
}

.section-features ._item:nth-child(even) {
  grid-template-areas:
    "header visual"
    "body   visual";
}

.section-features ._itemHeader {
  grid-area: header;
  align-self: end;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.section-features ._itemHeader h3 {
  line-height: 1.5;
  font-weight: 700;
}

.section-features ._itemVisual {
  grid-area: visual;
  display: grid;
  align-items: center;
}

.section-features ._itemBody {
  grid-area: body;
  align-self: start;
}

.section-features ._itemBody p {
  margin-top: 16px;
}

.section-features ._itemBody ._lead {
  margin-top: 0;
}

._feature {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  width: fit-content;
  color: var(--color-primary);
  line-height: 1;
}

._feature span {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

._feature strong {
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
}

._lead {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-navy);
  font-size: 18px;
  font-weight: 500;
}

._lead::before {
  content: "";
  display: inline-block;
  flex-shrink: 0;
  width: 32px;
  height: 1px;
  background-color: currentColor;
}

@media (max-width: 768px) {
  .section-features ._items {
    gap: 48px;
  }

  .section-features ._item,
  .section-features ._item:nth-child(even) {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    grid-template-areas:
      "header"
      "visual"
      "body";
    row-gap: 16px;
  }

  .section-features ._itemHeader {
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 0;
  }

  .section-features ._itemHeader h3 {
    text-align: center;
  }

  ._feature {
    flex-direction: row;
    align-items: baseline;
    justify-content: center;
    gap: 6px;
    margin: 0 auto;
  }
}

/* ---- feature screenshot ---- */
.feature-shot {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background-color: var(--color-white);
  box-shadow: 0 20px 44px rgba(24, 104, 219, 0.12);
}

@media (max-width: 768px) {
  .feature-shot {
    border-radius: 12px;
  }
}

/* =================================================
  CTA panel
================================================= */
.cmn-cta-panel {
  padding: 70px 24px;
  background-color: var(--color-surface-blue);
}

.cmn-cta-panel .inner {
  padding: clamp(32px, 3.5vw, 40px) clamp(20px, 4.5vw, 64px);
  border-radius: 24px;
  background-color: var(--color-white);
}

.cmn-cta-panel h2 {
  font-size: 24px;
  color: var(--color-primary);
}

.cmn-cta-panel p {
  margin-top: 8px;
}

.cta-panel__btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
  width: 100%;
}

.cta-panel__btns a[class*="btn-"] {
  flex: 1 1 calc((100% - 16px) / 2);
  font-size: 18px;
  height: 78px;
}

@media (max-width: 768px) {
  .cmn-cta-panel {
    padding: 40px 24px;
  }

  .cmn-cta-panel h2 {
    font-size: 20px;
  }

  .cta-panel__btns {
    flex-direction: column;
  }

  .cta-panel__btns a[class*="btn-"] {
    flex: none;
    width: 100%;
    height: 68px;
    padding: 12px 20px;
  }
}

/* =================================================
  Footer
================================================= */
.site-footer {
  padding: 40px 24px;
  color: var(--color-white);
  background-color: var(--color-navy);
}

.site-footer__inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-footer__brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.site-footer .brand__name {
  color: var(--color-white);
}

.site-footer .brand__by {
  color: rgba(255, 255, 255, 0.72);
}

.site-footer small {
  font-size: 13px;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .site-footer {
    padding: 32px 24px;
  }

  .site-footer__inner {
    flex-direction: column;
    gap: 12px;
  }
}

/* =================================================
  Motion preference
================================================= */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .mainvisual__body > *,
  .product-stage {
    animation: none;
  }

  a[class*="btn-"],
  .site-nav__links a {
    transition: none;
  }
}