@charset "UTF-8";
/* FUNCTIONS — カード / 大型フロー / 導入ビジュアル / カテゴリ別FAQ */
.page-functions .f-container {
  width: calc(100% - var(--container-gutters-desktop));
  max-width: var(--container-max-detail);
  margin-inline: auto;
}
.page-functions .f-symbols {
  position: absolute;
  overflow: hidden;
  pointer-events: none;
}
.page-functions .f-eyebrow {
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.page-functions .f-text-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 15px 0;
  border-bottom: 1px solid currentColor;
  font-size: 13px;
  font-weight: 700;
}
.page-functions .f-text-link > span {
  color: var(--blue);
  font-size: 24px;
  line-height: 1;
  transition: transform 0.2s;
}
.page-functions .f-text-link:hover > span {
  transform: translate(3px, -3px);
}
.page-functions svg:not(.logo-mark):not(.f-symbols) {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.page-functions .detail-directory {
  border-top: 0;
  padding-block: 35px;
}

/* 冒頭：大きなコピーと「7機能」、ページ内の案内 */
.f-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: 35px 0 50px;
}
.f-hero h1 {
  margin-top: 22px;
  font-size: 56px;
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -0.055em;
}
.f-hero h1 > span {
  color: var(--blue);
}

.f-hero-lead {
  margin-top: 24px;
  color: var(--muted);
  line-height: 2.1;
}

.f-hero-mark {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 270px;
  padding-top: 18px;
  color: var(--blue);
}
.f-hero-mark > span:first-child {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.22em;
}
.f-hero-mark > strong {
  position: relative;
  font-size: 170px;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.09em;
}
.f-hero-mark > strong > span {
  position: absolute;
  top: 12px;
  right: 5px;
  font-size: 66px;
  font-weight: 400;
  line-height: 1;
}
.f-hero-mark > span:last-child {
  margin-top: 12px;
  font-size: 12px;
  font-weight: 700;
}

.f-page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 38px;
  padding: 21px 0;
  border-block: 1px solid var(--line);
}
.f-page-nav a {
  display: flex;
  gap: 22px;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
}
.f-page-nav a > span {
  color: var(--blue);
}
.f-page-nav a:hover {
  color: var(--blue);
}

/* 機能カード：タイトル → アイコン → コピー → 要点 → 補足 */
.f-features {
  padding: 44px 0 100px;
}

.f-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.f-card {
  min-width: 0;
  padding: 28px 28px 30px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.f-card .f-card-heading {
  display: flex;
  align-items: center;
  gap: 14px;
}
.f-card .f-number {
  color: var(--blue);
  font-size: 17px;
  font-weight: 500;
  line-height: 1;
}
.f-card h2 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.035em;
}
.f-card h3 {
  margin-bottom: 22px;
  font-size: 21px;
  font-weight: 700;
  line-height: 1.75;
  letter-spacing: -0.045em;
}
.f-card p {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  line-height: 2;
}
.f-card small {
  display: block;
  margin-top: 11px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.9;
}

.f-icon {
  position: relative;
  display: grid;
  width: 86px;
  height: 92px;
  place-items: center;
  margin: 23px 0 18px;
  color: var(--blue);
}
.f-icon::before {
  position: absolute;
  right: 0;
  bottom: 9px;
  width: 54px;
  height: 54px;
  background: var(--mint);
  border-radius: 50%;
  content: "";
}
.f-icon svg {
  position: relative;
  width: 76px;
  height: 76px;
}

.f-checks {
  display: grid;
  gap: 9px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.8;
}
.f-checks li {
  position: relative;
  padding-left: 23px;
}
.f-checks li::before {
  position: absolute;
  top: 5px;
  left: 2px;
  width: 10px;
  height: 6px;
  border-left: 1.5px solid var(--blue);
  border-bottom: 1.5px solid var(--blue);
  transform: rotate(-45deg);
  content: "";
}

.f-card-attachment {
  grid-column: 1/-1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 65px;
  padding: 36px 48px;
  background: #f0f5ff;
}
.f-card-attachment .f-icon {
  float: right;
  margin: 8px 0 0 15px;
}
.f-card-attachment h3 {
  margin-top: 24px;
  font-size: 28px;
  line-height: 1.7;
}
.f-card-attachment p {
  border-color: #d3def3;
}
.f-card-attachment .f-checks {
  clear: both;
}

.f-files-art {
  position: relative;
  height: 350px;
  color: var(--blue);
}
.f-files-art .f-art-caption {
  position: absolute;
  top: 0;
  left: 48px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.f-file-sheet {
  position: absolute;
  width: 190px;
  height: 240px;
  padding: 22px;
  border: 1px solid var(--blue);
  border-radius: 2px;
  background: #fff;
  box-shadow: 7px 9px 0 rgba(23, 75, 255, 0.0431372549);
}
.f-file-sheet > span {
  display: block;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.f-sheet-image {
  top: 45px;
  right: 10px;
  transform: rotate(12deg);
  background: var(--mint);
}
.f-sheet-image svg {
  width: 100%;
  height: 115px;
  margin-block: 18px;
}

.f-sheet-pdf {
  top: 63px;
  left: 35px;
  transform: rotate(-9deg);
}
.f-sheet-pdf strong {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 27px 0 17px;
  font-size: 55px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.06em;
}
.f-sheet-pdf strong > span {
  font-size: 32px;
}
.f-sheet-pdf i {
  display: block;
  height: 1px;
  margin-top: 14px;
  background: #b5c7fb;
}
.f-sheet-pdf i + i {
  width: 65%;
  margin-bottom: 20px;
}

.f-files-badge {
  position: absolute;
  bottom: 8px;
  right: 49px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  transform: rotate(9deg);
}
.f-files-badge > span {
  font-size: 9px;
}
.f-files-badge strong {
  font-size: 38px;
  line-height: 1.2;
  letter-spacing: -0.045em;
}
.f-files-badge strong > span {
  margin-left: 3px;
  font-size: 15px;
}

/* 大型フロー：青い一面に大きな文字、丸と線だけで流れをつなぐ */
.f-flow {
  padding: 90px 0 38px;
  background: var(--blue);
  color: #fff;
  --icon-fill: var(--blue);
}
.f-flow .f-eyebrow {
  color: var(--mint);
}
.f-flow h2 {
  margin-top: 24px;
  font-size: 76px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.06em;
}
.f-flow h2 > span {
  color: var(--mint);
}

.f-flow-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 45px;
}

.f-flow-intro {
  padding-bottom: 16px;
  font-size: 15px;
  line-height: 2.2;
}

.f-flow-diagram {
  display: grid;
  grid-template-columns: minmax(0, 2.5fr) minmax(270px, 1fr);
  align-items: center;
  gap: 60px;
  margin-top: 60px;
}

.f-flow-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
}
.f-flow-steps li {
  position: relative;
  text-align: center;
}
.f-flow-steps li:not(:last-child)::after {
  position: absolute;
  top: 107px;
  left: calc(50% + 70px);
  width: calc(100% - 110px);
  border-top: 1px solid rgba(255, 255, 255, 0.4392156863);
  content: "";
}
.f-flow-steps li:not(:last-child)::before {
  position: absolute;
  top: 104px;
  left: calc(150% - 44px);
  width: 7px;
  height: 7px;
  border-top: 1px solid #ffffff;
  border-right: 1px solid #ffffff;
  transform: rotate(45deg);
  content: "";
}
.f-flow-steps li:last-child::after {
  position: absolute;
  top: 108px;
  left: calc(50% + 66px);
  width: calc(50% - 6px);
  border-top: 1px solid rgba(255, 255, 255, 0.4392156863);
  content: "";
}
.f-flow-steps h3 {
  margin-top: 22px;
  font-size: 23px;
  font-weight: 600;
}
.f-flow-steps p {
  margin-top: 5px;
  color: #e3ebff;
}

.f-flow-number {
  display: block;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: #e3ebff;
}

.f-flow-circle {
  display: grid;
  place-items: center;
  width: 132px;
  height: 132px;
  margin: 24px auto 0;
  border: 1px solid rgba(255, 255, 255, 0.5333333333);
  border-radius: 50%;
}

.f-flow-circle svg {
  width: 74px;
  height: 74px;
}

.f-flow-receivers {
  position: relative;
  display: grid;
  gap: 42px;
  padding-left: 28px;
  transform: translateY(-23px);
}
.f-flow-receivers::before {
  position: absolute;
  top: 42px;
  bottom: 42px;
  left: 0;
  width: 20px;
  border: 1px solid rgba(255, 255, 255, 0.4392156863);
  border-right: 0;
  content: "";
}
.f-flow-receivers::after {
  position: absolute;
  content: "";
}

.f-flow-recipient {
  display: flex;
  align-items: center;
  gap: 17px;
}
.f-flow-recipient svg {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  color: var(--mint);
}
.f-flow-recipient span {
  color: var(--mint);
  font-size: 11px;
}
.f-flow-recipient h3 {
  font-size: 20px;
  font-weight: 600;
}
.f-flow-recipient p {
  margin-top: 4px;
  color: #e3ebff;
  font-size: 10px;
}

.f-flow-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 64px;
  padding-top: 25px;
  border-top: 1px solid rgba(255, 255, 255, 0.2509803922);
}
.f-flow-bottom strong {
  font-weight: 600;
}
.f-flow-bottom > span {
  font-size: 10px;
  color: #e3ebff;
}

/* 設定セクション：開いた余白と、大きな説明書・封筒 */
.f-mail {
  padding: 95px 0 110px;
  background: #eff5f0;
}

.f-mail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 85px;
}

.f-mail-copy h2 {
  margin-top: 25px;
  font-size: 39px;
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 1.7;
}
.f-mail-copy h2 > span {
  color: var(--blue);
}
.f-mail-copy .f-mail-lead {
  margin: 26px 0 20px;
  color: var(--ink);
  font-size: 19px;
  font-weight: 600;
}
.f-mail-copy > p:not(.f-eyebrow) {
  line-height: 2;
}
.f-mail-copy > p:not(.f-eyebrow):not(.f-mail-lead) {
  color: var(--muted);
}
.f-mail-copy .f-text-link {
  margin-top: 20px;
}
.f-mail-copy small {
  display: block;
  max-width: 410px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.9;
}

.f-mail-art {
  position: relative;
  height: 490px;
  color: var(--blue);
}

.f-mail-orbit {
  position: absolute;
  inset: 50px 5px 35px 0;
  border: 1px solid #c5d9cc;
  border-radius: 50%;
  transform: rotate(-20deg);
}

.f-mail-star {
  position: absolute;
  right: 5px;
  top: -5px;
  font-size: 105px;
  font-weight: 400;
  line-height: 1;
}

.f-manual {
  position: absolute;
  top: 10px;
  left: 50px;
  width: 285px;
  height: 370px;
  padding: 26px;
  border: 1px solid #a3b6a9;
  background: #fff;
  color: var(--ink);
  box-shadow: 9px 9px 0 #dfe9e2;
  transform: rotate(-8deg);
}
.f-manual > span:first-child {
  font-size: 11px;
  font-weight: 800;
}
.f-manual .f-manual-label {
  display: block;
  margin-top: 30px;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--blue);
}
.f-manual > strong {
  display: block;
  margin-top: 10px;
  font-size: 27px;
  font-weight: 700;
  line-height: 1.6;
}
.f-manual .f-manual-rule {
  display: block;
  margin: 19px 0 15px;
  border-top: 1px solid var(--line);
}
.f-manual p {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 8px;
}
.f-manual b {
  color: var(--blue);
  font-size: 10px;
}
.f-manual .f-manual-footer {
  display: block;
  margin-top: 20px;
  font-size: 8px;
  letter-spacing: 0.07em;
  color: var(--blue);
}

.f-envelope {
  position: absolute;
  right: 5px;
  bottom: 28px;
  width: 280px;
  transform: rotate(10deg);
}
.f-envelope svg {
  display: block;
  width: 100%;
  height: auto;
}
.f-envelope svg > rect {
  fill: #d0f7e1;
}

.f-envelope-seal {
  position: absolute;
  left: calc(50% - 24px);
  top: calc(50% - 20px);
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 23px;
}

.f-mail-caption {
  position: absolute;
  bottom: 0;
  left: 20px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.13em;
}

/* FAQ：左にカテゴリ、右に見出しと罫線。detailsでJSなしでも操作可能 */
.f-faq {
  padding: 110px 0;
  background: #fff;
}

.f-faq-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  align-items: start;
  gap: 95px;
}

.f-faq-intro {
  position: sticky;
  top: 50px;
}
.f-faq-intro h2 {
  margin-top: 22px;
  font-size: 36px;
  font-weight: 700;
  line-height: 1.65;
  letter-spacing: -0.04em;
}
.f-faq-intro > p:not(.f-eyebrow) {
  margin-top: 22px;
  color: var(--muted);
  line-height: 2;
}
.f-faq-intro nav {
  margin-top: 30px;
}
.f-faq-intro nav > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  font-weight: 600;
}
.f-faq-intro nav > a > span {
  color: var(--blue);
  font-family: var(--font-en);
  font-size: 10px;
}
.f-faq-intro nav > a:hover {
  color: var(--blue);
}
.f-faq-intro .f-text-link {
  margin-top: 25px;
  font-size: 11px;
}

.f-faq-group + .f-faq-group {
  margin-top: 46px;
}
.f-faq-group h3 {
  display: flex;
  gap: 20px;
  align-items: center;
  padding-bottom: 19px;
  border-bottom: 1px solid var(--ink);
  font-size: 20px;
  font-weight: 700;
}
.f-faq-group h3 > span {
  color: var(--blue);
  font-size: 14px;
  font-weight: 500;
}
.f-faq-group details {
  border-bottom: 1px solid var(--line);
}
.f-faq-group summary {
  position: relative;
  padding: 25px 36px 25px 31px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.9;
  list-style: none;
  cursor: pointer;
}
.f-faq-group summary::-webkit-details-marker {
  display: none;
}
.f-faq-group summary::before {
  position: absolute;
  top: 25px;
  left: 0;
  content: "Q";
  color: var(--blue);
  font-family: var(--font-en);
  font-weight: 600;
}
.f-faq-group summary::after {
  position: absolute;
  top: 23px;
  right: 4px;
  content: "+";
  color: var(--blue);
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.3;
}
.f-faq-group summary:hover {
  color: var(--blue);
}
.f-faq-group details[open] summary::after {
  content: "−";
}
.f-faq-group details[open] summary {
  color: var(--blue);
}
.f-faq-group .f-answer {
  padding: 0 31px 25px;
  color: var(--muted);
  font-size: 12px;
  line-height: 2.1;
}
.f-faq-group .f-answer a {
  display: inline-block;
  margin-top: 12px;
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 動作環境と最後の大きな導線 */
.f-requirements {
  padding: 70px 0;
  border-top: 1px solid var(--line);
}

.f-requirements-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 24px 95px;
}
.f-requirements-layout h2 {
  margin-top: 17px;
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.f-requirements-layout > div > p:last-child {
  margin-top: 13px;
  color: var(--muted);
}
.f-requirements-layout dl > div {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.f-requirements-layout dl > div:first-child {
  padding-top: 0;
}
.f-requirements-layout dt {
  font-size: 12px;
  font-weight: 700;
}
.f-requirements-layout dt > span {
  margin-right: 15px;
  color: var(--blue);
  font-size: 10px;
}
.f-requirements-layout dd {
  color: var(--muted);
  font-size: 12px;
  line-height: 2;
}

.f-environment-note {
  grid-column: 2;
  color: var(--muted);
  line-height: 1.9;
}

.f-cta {
  padding: 70px 0 80px;
  background: var(--mint);
}

.f-cta-layout {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 50px;
}
.f-cta-layout h2 {
  margin-top: 22px;
  font-size: 43px;
  font-weight: 700;
  line-height: 1.65;
  letter-spacing: -0.055em;
}
.f-cta-layout p:not(.f-eyebrow) {
  margin-top: 20px;
}

.f-cta-link {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  flex-direction: column;
  gap: 20px;
  padding: 0 15px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
}
.f-cta-link .f-cta-arrow {
  display: grid;
  place-items: center;
  width: 135px;
  height: 135px;
  border: 1px solid var(--blue);
  border-radius: 50%;
  font-family: var(--font-en);
  font-size: 70px;
  font-weight: 400;
  line-height: 1;
  transition: background 0.25s, color 0.25s, transform 0.25s;
}
.f-cta-link:hover .f-cta-arrow {
  background: var(--blue);
  color: #fff;
  transform: rotate(5deg);
}

/* 小さめのPC・タブレット */
@media (max-width: 1199px) and (min-width: 768px) {
  .page-functions .f-container {
    width: calc(100% - var(--container-gutters-tablet));
  }
  .f-hero h1 {
    font-size: 46px;
  }
  .f-hero-mark {
    min-width: 220px;
  }
  .f-hero-mark > strong {
    font-size: 140px;
  }
  .f-grid {
    gap: 18px;
  }
  .f-card {
    padding: 23px;
  }
  .f-card h2 {
    font-size: 14px;
  }
  .f-card h3 {
    font-size: 18px;
  }
  .f-card h3 br {
    display: none;
  }
  .f-card .f-checks {
    font-size: 11px;
  }
  .f-card-attachment {
    padding: 32px;
    gap: 25px;
  }
  .f-card-attachment h3 {
    font-size: 27px;
  }
  .f-card-attachment h3 br {
    display: initial;
  }
  .f-files-art {
    height: 340px;
  }
  .f-sheet-pdf {
    left: 0;
  }
  .f-sheet-image {
    right: 0;
  }
  .f-files-badge {
    right: 15px;
  }
  .f-flow h2 {
    font-size: 62px;
  }
  .f-flow-intro {
    font-size: 12px;
  }
  .f-flow-diagram {
    gap: 40px;
    grid-template-columns: minmax(0, 2.2fr) 240px;
  }
  .f-flow-steps {
    gap: 10px;
  }
  .f-flow-steps li:not(:last-child)::after {
    top: 90px;
    left: calc(50% + 52px);
    width: calc(100% - 94px);
  }
  .f-flow-steps li:not(:last-child)::before {
    top: 87px;
    left: calc(150% - 48px);
  }
  .f-flow-steps li:last-child::after {
    top: 92px;
    left: calc(50% + 50px);
    width: calc(50% - 10px);
  }
  .f-flow-receivers {
    transform: translateY(-35px);
  }
  .f-flow-circle {
    width: 100px;
    height: 100px;
  }
  .f-flow-circle svg {
    width: 58px;
    height: 58px;
  }
  .f-flow-steps h3 {
    font-size: 20px;
  }
  .f-flow-steps p {
    font-size: var(--font-size-caption);
  }
  .f-flow-recipient {
    gap: 12px;
  }
  .f-flow-recipient h3 {
    font-size: 18px;
  }
  .f-flow-recipient svg {
    width: 40px;
    height: 40px;
  }
  .f-flow-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
  .f-mail-layout {
    gap: 40px;
  }
  .f-mail-copy h2 {
    font-size: 32px;
  }
  .f-mail-art {
    height: 440px;
  }
  .f-manual {
    left: 15px;
    width: 245px;
    padding: 22px;
  }
  .f-envelope {
    width: 240px;
    right: 0;
    bottom: 15px;
  }
  .f-mail-star {
    font-size: 75px;
  }
  .f-faq-layout, .f-requirements-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 30px 45px;
  }
  .f-faq-intro h2 {
    font-size: 31px;
  }
  .f-requirements-layout dl > div {
    grid-template-columns: 1fr;
    gap: 9px;
  }
}
@media (max-width: 959px) and (min-width: 768px) {
  .f-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .f-card {
    padding: 28px;
  }
  .f-card h3 {
    font-size: 22px;
  }
  .f-card .f-checks {
    font-size: 12px;
  }
  .f-card-attachment {
    padding: 28px;
    gap: 20px;
  }
  .f-card-attachment .f-icon {
    float: none;
    margin: 17px 0 5px;
  }
  .f-card-attachment h3 {
    margin-top: 12px;
    font-size: 23px;
  }
  .f-file-sheet {
    width: 165px;
    height: 220px;
    padding: 18px;
  }
  .f-sheet-pdf strong {
    font-size: 46px;
  }
  .f-files-art .f-art-caption {
    left: 0;
  }
  .f-flow-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 24px;
  }
  .f-flow-intro {
    font-size: 14px;
  }
  .f-flow-diagram {
    grid-template-columns: 1fr;
    gap: 55px;
  }
  .f-flow-steps li:not(:last-child)::after {
    width: calc(100% - 104px);
  }
  .f-flow-steps li:not(:last-child)::before {
    left: calc(150% - 58px);
  }
  .f-flow-steps li:last-child::after {
    display: none;
  }
  .f-flow-receivers {
    grid-template-columns: 1fr 1fr;
    border-top: 1px solid rgba(255, 255, 255, 0.4392156863);
    padding: 30px 0 0;
    transform: none;
  }
  .f-flow-receivers::before {
    display: none;
  }
  .f-flow-receivers::after {
    top: -30px;
    left: calc(83.33% - 3px);
    width: 0;
    height: 30px;
    border-top: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.4392156863);
  }
  .f-mail-layout {
    gap: 25px;
  }
  .f-mail-copy h2 {
    font-size: 28px;
  }
  .f-mail-copy .f-mail-lead {
    font-size: 16px;
  }
  .f-mail-star {
    right: -15px;
  }
  .f-manual {
    left: 5px;
    width: 225px;
  }
  .f-manual > strong {
    font-size: 24px;
  }
  .f-envelope {
    width: 215px;
  }
  .f-faq-layout {
    gap: 35px;
    grid-template-columns: 220px minmax(0, 1fr);
  }
  .f-faq-intro h2 {
    font-size: 29px;
  }
  .f-faq-group h3 {
    font-size: 18px;
  }
  .f-cta-layout h2 {
    font-size: 36px;
  }
}
/* スマートフォン：カードは1列、フローは縦へつながる */
@media (max-width: 767px) {
  .page-functions .f-container {
    width: calc(100% - var(--container-gutters-mobile));
  }
  .page-functions .f-eyebrow {
    font-size: 10px;
  }
  .page-functions .f-desktop-break {
    display: none;
  }
  .f-hero {
    position: relative;
    display: block;
    padding: 20px 0 30px;
  }
  .f-hero h1 {
    margin-top: 24px;
    font-size: 37px;
  }
  .f-hero-lead {
    margin-top: 22px;
  }
  .f-hero-mark {
    position: absolute;
    top: 14px;
    right: 0;
    min-width: 0;
    padding: 0;
  }
  .f-hero-mark > span {
    display: none;
  }
  .f-hero-mark > strong {
    font-size: 23px;
    font-weight: 700;
    letter-spacing: -0.05em;
  }
  .f-hero-mark > strong > span {
    position: static;
    margin-left: 4px;
    font-size: 20px;
  }
  .f-page-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px 25px;
    padding: 19px 0;
  }
  .f-page-nav a {
    justify-content: space-between;
    font-size: 10px;
    gap: 5px;
  }
  .f-features {
    padding: 25px 0 55px;
  }
  .f-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .f-card {
    padding: 25px;
  }
  .f-card h2 {
    font-size: 16px;
  }
  .f-card h3 {
    font-size: 21px;
    margin-bottom: 20px;
  }
  .f-icon {
    margin: 19px 0 15px;
    height: 82px;
  }
  .f-card p {
    margin-top: 20px;
  }
  .f-card-attachment {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .f-card-attachment .f-icon {
    float: none;
    margin: 19px 0 15px;
  }
  .f-card-attachment h3 {
    margin-top: 0;
    font-size: 22px;
  }
  .f-files-art {
    height: 310px;
    width: 100%;
    max-width: 330px;
    margin-inline: auto;
  }
  .f-files-art .f-art-caption {
    left: 5px;
    font-size: 8px;
  }
  .f-file-sheet {
    width: 155px;
    height: 205px;
    padding: 18px;
  }
  .f-sheet-pdf {
    top: 55px;
    left: 5px;
  }
  .f-sheet-pdf strong {
    font-size: 42px;
    margin-top: 25px;
  }
  .f-sheet-image {
    top: 35px;
    right: 5px;
  }
  .f-sheet-image svg {
    height: 94px;
    margin-block: 14px;
  }
  .f-files-badge {
    right: 10px;
    bottom: 0;
    width: 94px;
    height: 94px;
  }
  .f-files-badge strong {
    font-size: 32px;
  }
  .f-flow {
    padding: 55px 0 28px;
  }
  .f-flow-heading {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
  .f-flow h2 {
    margin-top: 22px;
    font-size: 43px;
    line-height: 1.55;
  }
  .f-flow-intro {
    padding-bottom: 0;
    font-size: 12px;
    line-height: 2.1;
  }
  .f-flow-diagram {
    grid-template-columns: 1fr;
    gap: 44px;
    margin-top: 38px;
  }
  .f-flow-steps {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .f-flow-steps li {
    min-height: 96px;
    display: grid;
    grid-template-columns: 90px 1fr;
    align-content: center;
    column-gap: 24px;
    text-align: left;
  }
  .f-flow-number {
    grid-column: 2;
    font-size: 9px;
  }
  .f-flow-circle {
    grid-column: 1;
    grid-row: 1/4;
    width: 88px;
    height: 88px;
    margin: 0;
  }
  .f-flow-circle svg {
    width: 51px;
    height: 51px;
  }
  .f-flow-steps h3 {
    grid-column: 2;
    margin-top: 4px;
    font-size: 22px;
  }
  .f-flow-steps p {
    grid-column: 2;
    margin-top: 3px;
  }
  .f-flow-steps li:not(:last-child)::after {
    top: 99px;
    left: 44px;
    width: 0;
    height: 25px;
    border-top: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.4392156863);
  }
  .f-flow-steps li:not(:last-child)::before {
    top: 116px;
    left: 41px;
    transform: rotate(135deg);
  }
  .f-flow-steps li:last-child::after {
    display: none;
  }
  .f-flow-receivers {
    gap: 26px;
    margin-left: 44px;
    padding-left: 27px;
    transform: none;
  }
  .f-flow-receivers::before {
    top: -40px;
    bottom: 37px;
    width: 16px;
    border-top: 0;
  }
  .f-flow-receivers::after {
    top: 38px;
    left: 0;
    width: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.4392156863);
  }
  .f-flow-recipient {
    gap: 15px;
  }
  .f-flow-recipient svg {
    width: 44px;
    height: 44px;
  }
  .f-flow-recipient h3 {
    font-size: 19px;
  }
  .f-flow-bottom {
    flex-direction: column;
    align-items: flex-start;
    margin-top: 40px;
    gap: 15px;
    padding-top: 22px;
  }
  .f-flow-bottom p {
    font-size: var(--font-size-lead);
    line-height: 1.9;
  }
  .f-flow-bottom strong {
    display: block;
  }
  .f-flow-bottom > span {
    font-size: 9px;
    line-height: 1.9;
  }
  .f-mail {
    padding: 55px 0;
  }
  .f-mail-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .f-mail-copy {
    grid-row: 1;
  }
  .f-mail-copy h2 {
    margin-top: 20px;
    font-size: 30px;
  }
  .f-mail-copy .f-mail-lead {
    margin-top: 22px;
    font-size: 17px;
  }
  .f-mail-copy small {
    font-size: 10px;
  }
  .f-mail-art {
    width: 100%;
    max-width: 350px;
    height: 415px;
    margin-inline: auto;
  }
  .f-manual {
    left: 22px;
    width: 240px;
    height: 335px;
    padding: 22px;
  }
  .f-manual > strong {
    font-size: 24px;
  }
  .f-manual .f-manual-label {
    margin-top: 23px;
  }
  .f-envelope {
    width: 230px;
    right: 6px;
    bottom: 25px;
  }
  .f-mail-star {
    font-size: 75px;
    right: 0;
  }
  .f-mail-caption {
    left: 0;
    font-size: 8px;
  }
  .f-faq {
    padding: 55px 0;
  }
  .f-faq-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .f-faq-intro {
    position: static;
  }
  .f-faq-intro h2 {
    margin-top: 20px;
    font-size: 31px;
  }
  .f-faq-intro nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 22px;
    margin-top: 24px;
  }
  .f-faq-intro nav > a {
    font-size: 11px;
  }
  .f-faq-intro .f-text-link {
    margin-top: 18px;
  }
  .f-faq-group + .f-faq-group {
    margin-top: 34px;
  }
  .f-faq-group h3 {
    font-size: 18px;
    gap: 14px;
  }
  .f-faq-group summary {
    padding: 23px 25px 23px 25px;
    font-size: 12px;
  }
  .f-faq-group summary::before {
    top: 23px;
  }
  .f-faq-group summary::after {
    top: 23px;
    right: 0;
    font-size: 19px;
  }
  .f-faq-group .f-answer {
    padding: 0 10px 23px 25px;
  }
  .f-requirements {
    padding: 50px 0;
  }
  .f-requirements-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .f-requirements-layout h2 {
    font-size: 24px;
  }
  .f-requirements-layout dl > div {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .f-environment-note {
    grid-column: 1;
  }
  .f-cta {
    padding: 50px 0;
  }
  .f-cta-layout {
    flex-direction: column;
    align-items: flex-start;
    gap: 30px;
  }
  .f-cta-layout h2 {
    font-size: 29px;
  }
  .f-cta-layout p:not(.f-eyebrow) {
    line-height: 2;
  }
  .f-cta-link {
    flex-direction: row-reverse;
    align-self: stretch;
    justify-content: space-between;
    padding: 0;
    font-size: 13px;
  }
  .f-cta-link .f-cta-arrow {
    width: 75px;
    height: 75px;
    font-size: 42px;
  }
}
@media (max-width: 359px) {
  .f-hero h1 {
    font-size: 32px;
  }
  .f-card {
    padding: 21px;
  }
  .f-card h3 {
    font-size: 19px;
  }
  .f-card h3 br {
    display: none;
  }
  .f-card h2 {
    font-size: 14px;
  }
  .f-flow h2 {
    font-size: 38px;
  }
  .f-mail-copy h2 {
    font-size: 26px;
  }
  .f-file-sheet {
    width: 140px;
  }
  .f-cta-layout h2 {
    font-size: 25px;
  }
}