:root {
  --paper: #f5f1e8;
  --paper-deep: #ece5d8;
  --surface: #fffdf8;
  --ink: #17231d;
  --ink-soft: #4b5a52;
  --line: #d6d0c4;
  --green: #245b46;
  --green-dark: #184333;
  --green-pale: #dce9e2;
  --blue: #385b72;
  --blue-pale: #dfe9ef;
  --violet: #5d527a;
  --violet-pale: #e8e2ef;
  --focus: #b34419;
  --white: #ffffff;
  --shadow-sm: 0 12px 32px rgb(23 35 29 / 7%);
  --shadow-md: 0 20px 60px rgb(23 35 29 / 12%);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --shell: 1180px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Hiragino Kaku Gothic ProN",
    "Hiragino Sans",
    "Yu Gothic",
    YuGothic,
    Meiryo,
    sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a[href] {
  touch-action: manipulation;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

::selection {
  color: var(--white);
  background: var(--green);
}

.shell {
  width: min(calc(100% - 48px), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--white);
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid rgb(214 208 196 / 80%);
}

.header-inner {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 11px;
  font-weight: 760;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--white);
  background: var(--ink);
  border-radius: 50% 50% 46% 54% / 48% 45% 55% 52%;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  font-weight: 700;
}

.brand-name {
  font-size: 18px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 8px 12px;
  color: var(--ink-soft);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  transition:
    color 180ms ease,
    background-color 180ms ease;
}

.site-nav a:hover {
  color: var(--ink);
  background: rgb(255 255 255 / 70%);
}

.site-nav .nav-contact {
  padding-inline: 17px;
  color: var(--white);
  background: var(--ink);
}

.site-nav .nav-contact:hover {
  color: var(--white);
  background: var(--green-dark);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(76px, 10vw, 132px) 0 90px;
  background:
    radial-gradient(circle at 8% 18%, rgb(36 91 70 / 8%) 0 15%, transparent 15.4%),
    radial-gradient(circle at 94% 70%, rgb(93 82 122 / 9%) 0 19%, transparent 19.4%),
    var(--paper);
}

.hero::before {
  position: absolute;
  top: -145px;
  right: -125px;
  width: 350px;
  height: 350px;
  border: 1px solid rgb(23 35 29 / 13%);
  border-radius: 50%;
  content: "";
}

.hero::after {
  position: absolute;
  bottom: 42px;
  left: 7%;
  width: 80px;
  height: 1px;
  background: var(--green);
  box-shadow: 100px 0 0 var(--green), 200px 0 0 var(--green);
  content: "";
  opacity: 0.3;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(380px, 0.94fr);
  align-items: center;
  gap: clamp(48px, 7vw, 96px);
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.5;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-family:
    "Hiragino Mincho ProN",
    "Yu Mincho",
    YuMincho,
    Georgia,
    serif;
  font-size: clamp(38px, 5.2vw, 69px);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.25;
}

.hero-lead {
  max-width: 680px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 1.6vw, 19px);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 21px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 750;
  line-height: 1.45;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--green);
  box-shadow: 0 8px 24px rgb(36 91 70 / 18%);
}

.button-primary:hover {
  background: var(--green-dark);
  box-shadow: 0 12px 30px rgb(36 91 70 / 24%);
}

.button-secondary {
  color: var(--ink);
  background: transparent;
  border-color: var(--line);
}

.button-secondary:hover {
  background: var(--surface);
  border-color: #b9b2a5;
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 31px 0 0;
  padding: 0;
  color: var(--ink-soft);
  font-size: 13px;
  list-style: none;
}

.trust-list li {
  position: relative;
  padding-left: 18px;
}

.trust-list li::before {
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--green);
  border-radius: 50%;
  content: "";
}

.hero-board {
  position: relative;
  padding: 27px;
  background: var(--surface);
  border: 1px solid rgb(23 35 29 / 12%);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transform: rotate(1.2deg);
}

.hero-board::before {
  position: absolute;
  right: -12px;
  bottom: -12px;
  z-index: -1;
  width: 100%;
  height: 100%;
  border: 1px solid rgb(23 35 29 / 20%);
  border-radius: inherit;
  content: "";
}

.board-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 13px;
  font-style: italic;
  letter-spacing: 0.08em;
}

.board-dot {
  width: 10px;
  height: 10px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 5px var(--green-pale);
}

.flow-group {
  margin-top: 28px;
  padding: 19px;
  background: var(--green-pale);
  border-radius: 18px;
}

.flow-group-alt {
  background: var(--violet-pale);
}

.flow-label {
  margin: 0 0 12px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.flow-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1.12fr;
  align-items: center;
  gap: 8px;
}

.flow-row span {
  display: grid;
  min-height: 54px;
  place-items: center;
  padding: 8px;
  background: rgb(255 255 255 / 78%);
  border: 1px solid rgb(23 35 29 / 10%);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
}

.flow-row b {
  color: var(--ink-soft);
  font-weight: 500;
}

.flow-row .flow-result {
  color: var(--white);
  background: var(--ink);
}

.board-note {
  margin: 23px 2px 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.65;
}

.section {
  padding: clamp(82px, 9vw, 124px) 0;
}

.products-section {
  background: var(--surface);
}

.section-heading {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  align-items: end;
  gap: 50px;
  margin-bottom: 46px;
  padding-bottom: 27px;
  border-bottom: 1px solid var(--line);
}

.section-heading .eyebrow {
  margin-bottom: 10px;
}

.section-heading h2,
.about-copy h2,
.contact-copy h2 {
  margin: 0;
  font-family:
    "Hiragino Mincho ProN",
    "Yu Mincho",
    YuMincho,
    Georgia,
    serif;
  font-size: clamp(34px, 4vw, 50px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.3;
}

.section-heading > p {
  max-width: 600px;
  margin: 0 0 4px auto;
  color: var(--ink-soft);
  line-height: 1.8;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--line);
  border-top: 5px solid var(--green);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgb(220 233 226 / 55%), transparent 150px),
    var(--white);
  box-shadow: var(--shadow-sm);
}

.product-card-blue {
  border-top-color: var(--blue);
  background:
    linear-gradient(180deg, rgb(223 233 239 / 63%), transparent 150px),
    var(--white);
}

.product-card-violet {
  border-top-color: var(--violet);
  background:
    linear-gradient(180deg, rgb(232 226 239 / 65%), transparent 150px),
    var(--white);
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.category-tag {
  padding: 5px 9px;
  color: var(--green-dark);
  background: var(--green-pale);
  border-radius: 999px;
  letter-spacing: 0;
}

.product-card-blue .category-tag {
  color: #27495f;
  background: var(--blue-pale);
}

.product-card-violet .category-tag {
  color: #4d4269;
  background: var(--violet-pale);
}

.product-card h3 {
  min-height: 7.2em;
  margin: 27px 0 17px;
  font-family:
    "Hiragino Mincho ProN",
    "Yu Mincho",
    YuMincho,
    Georgia,
    serif;
  font-size: clamp(21px, 1.8vw, 26px);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.55;
}

.card-description {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.85;
}

.feature-list {
  display: grid;
  gap: 9px;
  margin: 24px 0 27px;
  padding: 21px 0 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 18px;
}

.feature-list li::before {
  position: absolute;
  top: 0.7em;
  left: 1px;
  width: 6px;
  height: 6px;
  background: currentColor;
  border-radius: 50%;
  content: "";
  opacity: 0.55;
}

.card-footer {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 14px;
  margin-top: auto;
}

.price {
  display: grid;
  margin: 0;
  line-height: 1.35;
}

.price strong {
  font-size: 23px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}

.price span {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 12px;
}

.button-card-link {
  min-height: 46px;
  color: var(--white);
  background: var(--violet);
}

.product-card-green .button-card-link {
  background: var(--green);
}

.product-card-green .button-card-link:hover {
  background: var(--green-dark);
}

.product-card-blue .button-card-link {
  background: var(--blue);
}

.product-card-blue .button-card-link:hover {
  background: #29495d;
}

.button-card-link:hover {
  background: #493e65;
}

.button-pending {
  min-height: 46px;
  padding-inline: 16px;
  color: #66645f;
  background: #efede7;
  border-color: #d6d1c8;
  cursor: not-allowed;
}

.button-pending:hover {
  transform: none;
}

.scope-note {
  display: grid;
  grid-template-columns: 0.68fr 1.32fr;
  gap: 32px;
  margin-top: 22px;
  padding: 28px 32px;
  color: var(--white);
  background: var(--ink);
  border-radius: var(--radius-md);
}

.scope-note p {
  margin: 0;
}

.scope-note-title {
  align-self: center;
  font-family:
    "Hiragino Mincho ProN",
    "Yu Mincho",
    YuMincho,
    Georgia,
    serif;
  font-size: 21px;
  font-weight: 650;
  line-height: 1.5;
}

.scope-note p:last-child {
  color: #cdd6d1;
  font-size: 14px;
}

.scope-note-link {
  display: inline-block;
  margin-left: 0.45em;
  color: var(--white);
  font-weight: 750;
  text-underline-offset: 4px;
}

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

.section-heading-light {
  border-bottom-color: rgb(255 255 255 / 18%);
}

.section-heading-light .eyebrow,
.section-heading-light > p {
  color: #b9ccc3;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.article-card {
  display: grid;
  min-height: 330px;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto 1fr auto;
  padding: 31px;
  color: var(--white);
  background: #21312a;
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition:
    transform 200ms ease,
    background-color 200ms ease,
    border-color 200ms ease;
}

.article-card:hover {
  background: #293d33;
  border-color: rgb(255 255 255 / 30%);
  transform: translateY(-4px);
}

.article-number {
  grid-column: 2;
  grid-row: 1 / 3;
  color: rgb(255 255 255 / 30%);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 56px;
  line-height: 1;
}

.article-meta {
  grid-column: 1;
  grid-row: 1;
  color: #a9c7b8;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.1em;
}

.article-card h3 {
  grid-column: 1 / -1;
  grid-row: 3;
  align-self: center;
  max-width: 500px;
  margin: 28px 0;
  font-family:
    "Hiragino Mincho ProN",
    "Yu Mincho",
    YuMincho,
    Georgia,
    serif;
  font-size: clamp(24px, 2.6vw, 35px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.55;
}

.article-link {
  grid-column: 1 / -1;
  grid-row: 4;
  padding-top: 20px;
  border-top: 1px solid rgb(255 255 255 / 15%);
  color: #d8e5df;
  font-size: 13px;
  font-weight: 700;
}

.note-profile-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 34px;
  color: #b9c8c1;
}

.note-profile-link p {
  margin: 0;
}

.text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: inherit;
  font-size: 14px;
  font-weight: 750;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
}

.external-link::after {
  margin-left: 0.45em;
  content: "↗";
  font-weight: 500;
}

.about-section {
  background: var(--paper);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  align-items: center;
  gap: clamp(50px, 9vw, 120px);
}

.about-mark {
  position: relative;
  display: grid;
  width: min(100%, 390px);
  aspect-ratio: 1;
  place-items: center;
  justify-self: center;
  background: var(--green-pale);
  border: 1px solid rgb(23 35 29 / 16%);
  border-radius: 52% 48% 43% 57% / 44% 57% 43% 56%;
}

.about-mark::before,
.about-mark::after {
  position: absolute;
  border: 1px solid rgb(23 35 29 / 22%);
  border-radius: 50%;
  content: "";
}

.about-mark::before {
  inset: 13%;
}

.about-mark::after {
  width: 22%;
  height: 22%;
  right: 4%;
  bottom: 11%;
  background: var(--violet-pale);
}

.about-mark span {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(90px, 12vw, 160px);
  font-weight: 700;
  line-height: 1;
}

.about-mark i {
  position: absolute;
  top: 16%;
  right: 11%;
  width: 38px;
  height: 38px;
  background: var(--green);
  border-radius: 50%;
}

.about-copy .eyebrow,
.contact-copy .eyebrow {
  margin-bottom: 10px;
}

.about-lead {
  margin: 30px 0 20px;
  color: var(--ink);
  font-family:
    "Hiragino Mincho ProN",
    "Yu Mincho",
    YuMincho,
    Georgia,
    serif;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.8;
}

.about-copy > p:not(.eyebrow, .about-lead) {
  margin: 0 0 18px;
  color: var(--ink-soft);
}

.about-principles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 34px 0 0;
}

.about-principles div {
  padding: 18px 19px;
  background: rgb(255 255 255 / 62%);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.about-principles dt {
  margin-bottom: 6px;
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.about-principles dd {
  margin: 0;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.6;
}

.contact-section {
  background: var(--surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.76fr) minmax(430px, 1.24fr);
  align-items: start;
  gap: clamp(46px, 8vw, 100px);
}

.contact-copy > p:not(.eyebrow) {
  margin: 28px 0 0;
  color: var(--ink-soft);
}

.contact-caution {
  margin: 28px 0 16px;
  padding: 20px;
  background: var(--paper);
  border-left: 4px solid var(--green);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.contact-caution strong {
  font-size: 13px;
}

.contact-caution p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.7;
}

.contact-form {
  position: relative;
  display: grid;
  gap: 20px;
  padding: clamp(25px, 4vw, 42px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field label {
  font-size: 13px;
  font-weight: 750;
}

.form-field label span {
  color: var(--focus);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid #bdb7ac;
  border-radius: 10px;
  outline: none;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.form-field textarea {
  min-height: 170px;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgb(36 91 70 / 14%);
}

.field-help,
.form-privacy {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.65;
}

.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.confirm-row {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 10px;
  font-size: 12px;
  line-height: 1.65;
  cursor: pointer;
}

.confirm-row input {
  width: 19px;
  height: 19px;
  margin: 3px 0 0;
  accent-color: var(--green);
}

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

.contact-form :disabled {
  cursor: not-allowed;
}

.form-field input:disabled,
.form-field select:disabled,
.form-field textarea:disabled {
  color: var(--ink-soft);
  opacity: 0.72;
}

.form-submit:disabled {
  opacity: 0.72;
}

.form-status {
  min-height: 1.6em;
  margin: -7px 0 0;
  color: var(--focus);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
}

.site-footer {
  padding: 56px 0 22px;
  color: #d5ded9;
  background: #101913;
}

.footer-grid {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 50px;
  padding-bottom: 38px;
}

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

.footer-brand .brand-mark {
  color: var(--ink);
  background: var(--white);
}

.footer-grid > div:first-child > p {
  margin: 13px 0 0;
  color: #8fa098;
  font-size: 13px;
}

.footer-notes {
  max-width: 740px;
  justify-self: end;
  color: #9eada6;
  font-size: 12px;
  line-height: 1.8;
}

.footer-notes h2 {
  margin: 0 0 12px;
  color: var(--white);
  font-size: 15px;
  line-height: 1.5;
}

.footer-notes p {
  margin: 0 0 8px;
}

.footer-bottom {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 18px;
  border-top: 1px solid rgb(255 255 255 / 12%);
  color: #82938b;
  font-size: 12px;
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

@media (max-width: 1040px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 800px;
  }

  .hero-board {
    width: min(100%, 680px);
    transform: none;
  }

  .product-grid {
    grid-template-columns: 1fr 1fr;
  }

  .product-card-violet {
    grid-column: 1 / -1;
  }

  .product-card-violet h3 {
    min-height: auto;
  }

  .product-card-violet .feature-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .shell {
    width: min(calc(100% - 32px), var(--shell));
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
    padding: 12px 0 9px;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav a {
    flex: 0 0 auto;
  }

  .hero {
    padding-top: 68px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .section-heading > p {
    margin-left: 0;
  }

  .scope-note,
  .about-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .about-mark {
    width: min(80vw, 390px);
  }

  .contact-grid {
    gap: 40px;
  }

  .footer-notes {
    justify-self: start;
  }
}

@media (max-width: 680px) {
  .hero h1 br {
    display: none;
  }

  .hero-board {
    padding: 20px;
  }

  .flow-group {
    padding: 15px;
  }

  .flow-row {
    grid-template-columns: 1fr;
  }

  .flow-row b {
    height: 16px;
    font-size: 0;
    text-align: center;
  }

  .flow-row b::before {
    content: "↓";
    font-size: 14px;
  }

  .product-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .product-card-violet {
    grid-column: auto;
  }

  .product-card h3 {
    min-height: auto;
  }

  .product-card-violet .feature-list {
    grid-template-columns: 1fr;
  }

  .scope-note {
    gap: 12px;
  }

  .article-card {
    min-height: 300px;
  }

  .note-profile-link {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .about-principles {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .shell {
    width: min(calc(100% - 24px), var(--shell));
  }

  .site-nav {
    gap: 2px;
  }

  .site-nav a {
    padding-inline: 9px;
    font-size: 12px;
  }

  .site-nav .nav-contact {
    padding-inline: 12px;
  }

  .hero {
    padding: 55px 0 72px;
  }

  .hero-lead {
    line-height: 1.8;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .trust-list {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .section {
    padding: 72px 0;
  }

  .product-card,
  .article-card {
    padding: 23px;
  }

  .card-topline,
  .card-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .card-footer .button {
    width: 100%;
  }

  .scope-note {
    padding: 24px;
  }

  .article-number {
    font-size: 42px;
  }

  .contact-form {
    padding: 22px 17px;
    border-radius: var(--radius-md);
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}