:root {
  --ink: #0b1f3a;
  --ink-soft: #475569;
  --muted: #64748b;
  --paper: #f8fbff;
  --white: #ffffff;
  --mist: #f5f7fa;
  --line: #e2e8f0;
  --blue: #1e6bff;
  --blue-dark: #0b1f3a;
  --teal: #1e6bff;
  --teal-soft: #eef5ff;
  --gold: #22c7a9;
  --coral: #22c7a9;
  --shadow: 0 18px 44px rgba(11, 31, 58, 0.1);
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.65;
}

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

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

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

.container {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 24px;
  padding: 16px clamp(20px, 4vw, 54px);
  color: var(--ink);
  transition:
    background 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease;
}

.site-header.is-light,
.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 34px rgba(11, 31, 58, 0.06);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: max-content;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 10px;
  background: var(--ink);
  color: var(--white);
  font-weight: 900;
  box-shadow: 0 10px 28px rgba(11, 31, 58, 0.16);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1rem;
  line-height: 1.1;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.72rem;
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(16px, 2.4vw, 28px);
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 700;
}

.nav a:hover {
  color: var(--blue);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  gap: 9px;
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.2;
}

.header-cta {
  padding: 0 18px;
  border: 1px solid rgba(30, 107, 255, 0.24);
  background: var(--white);
  color: var(--blue);
}

.button {
  border: 0;
  padding: 0 22px;
  cursor: pointer;
}

.button svg,
.header-cta svg,
.service-card svg,
.trust-grid svg,
.contact-points svg {
  width: 19px;
  height: 19px;
  stroke-width: 2;
  flex: 0 0 auto;
}

.button-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 16px 34px rgba(30, 107, 255, 0.2);
}

.button-primary:hover {
  background: #1d4ed8;
}

.button-secondary {
  border: 1px solid rgba(30, 107, 255, 0.22);
  background: var(--white);
  color: var(--blue-dark);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
}

.section-band,
.section-white,
.section-muted,
.section-contact {
  position: relative;
  padding: 82px 0;
}

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

.section-muted {
  background: var(--mist);
}

.hero {
  min-height: 760px;
  display: grid;
  align-items: center;
  padding-top: 108px;
  padding-bottom: 60px;
  overflow: hidden;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, #ffffff 0%, #ffffff 52%, #f8fbff 78%, #eef5ff 100%);
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 40px;
  background: var(--mist);
}

.page-hero .container {
  max-width: min(100% - 40px, var(--max));
}

.page-hero h1 {
  margin-bottom: 18px;
}

.page-hero p:not(.eyebrow) {
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 1.03rem;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(390px, 0.78fr);
  align-items: center;
  gap: clamp(38px, 6vw, 82px);
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  max-width: 880px;
  font-size: 3.15rem;
  line-height: 1.02;
  letter-spacing: 0;
}

h1 span {
  display: block;
}

h2 {
  margin-bottom: 18px;
  max-width: 840px;
  font-size: 2.25rem;
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
  line-height: 1.3;
}

.hero-lede {
  max-width: 720px;
  margin-bottom: 30px;
  color: var(--ink-soft);
  font-size: 1.04rem;
  font-weight: 600;
}

.hero-actions,
.contact-points {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 34px;
}

.hero-stats div {
  min-height: 92px;
  border: 1px solid rgba(30, 107, 255, 0.14);
  border-radius: 8px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 14px 30px rgba(11, 31, 58, 0.06);
}

.hero-stats strong,
.hero-stats span {
  display: block;
}

.hero-stats strong {
  color: var(--blue-dark);
  font-size: 1.25rem;
}

.hero-stats span {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.growth-board {
  position: relative;
  min-height: 520px;
}

.board-line {
  position: absolute;
  inset: 64px 44px 60px 70px;
  border: 1px solid rgba(30, 107, 255, 0.18);
  border-radius: 8px;
  background:
    linear-gradient(90deg, transparent 49%, rgba(30, 107, 255, 0.12) 50%, transparent 51%),
    linear-gradient(0deg, transparent 49%, rgba(30, 107, 255, 0.12) 50%, transparent 51%);
}

.signal-card {
  position: absolute;
  width: min(260px, 48%);
  border: 1px solid rgba(30, 107, 255, 0.16);
  border-radius: 8px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  animation: floatSignal 5s ease-in-out infinite;
}

.signal-card span {
  color: var(--blue);
  font-weight: 900;
}

.signal-card strong,
.signal-card p {
  display: block;
}

.signal-card strong {
  margin-top: 8px;
  color: var(--ink);
  font-size: 1.12rem;
}

.signal-card p {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.signal-1 {
  top: 10px;
  left: 18px;
}

.signal-2 {
  top: 88px;
  right: 4px;
  animation-delay: -1.2s;
}

.signal-3 {
  bottom: 118px;
  left: 0;
  animation-delay: -2.2s;
}

.signal-4 {
  right: 28px;
  bottom: 20px;
  animation-delay: -3.1s;
}

@keyframes floatSignal {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

.section-intro {
  max-width: 860px;
  margin-bottom: 44px;
}

.section-action {
  display: flex;
  justify-content: center;
  margin-top: 34px;
}

.section-intro.centered {
  margin-inline: auto;
  text-align: center;
}

.section-intro p:not(.eyebrow),
.split-intro > p {
  color: var(--ink-soft);
  font-size: 1rem;
}

.split-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.65fr);
  gap: 42px;
  align-items: end;
  max-width: none;
}

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

.service-card,
.trust-grid article,
.case-card,
.article-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 30px rgba(11, 31, 58, 0.05);
}

.service-card {
  padding: 28px;
}

.service-card-head,
.trust-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.service-icon {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border-radius: 8px;
  background: var(--teal-soft);
  color: var(--teal);
}

.service-card-head > span,
.case-card > span,
.article-card > span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.service-card h3 {
  margin-top: 18px;
}

.service-card p {
  margin-top: 10px;
}

.service-card p,
.trust-grid p,
.case-card p,
.article-card p,
.timeline p,
.faq-list p,
.about-copy p {
  color: var(--ink-soft);
}

.text-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--blue-dark);
  font-weight: 900;
  text-underline-offset: 5px;
}
.text-link:hover{color:var(--ink-soft)}

.detail-section {
  padding-top: 76px;
}

.detail-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: start;
}

.detail-nav {
  position: sticky;
  top: 112px;
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: var(--paper);
}

.detail-nav strong {
  margin-bottom: 8px;
  color: var(--ink);
}

.detail-nav a {
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--ink-soft);
  font-weight: 750;
}

.detail-nav a:hover,
.detail-nav a.is-active {
  background: var(--teal-soft);
  color: var(--teal);
}

.detail-content {
  display: grid;
  gap: 36px;
}

.detail-block {
  border-bottom: 1px solid var(--line);
  padding-bottom: 34px;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.check-grid div {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--paper);
  color: var(--ink-soft);
  font-weight: 700;
}

.check-grid svg {
  width: 18px;
  height: 18px;
  margin-top: 4px;
  color: var(--teal);
  flex: 0 0 auto;
}

.related-links div {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links a {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 14px;
  background: var(--white);
  color: var(--blue-dark);
  font-weight: 800;
}

.service-card ul {
  display: grid;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.service-card li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.service-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
}

.tools-layout,
.about-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1fr);
  gap: clamp(34px, 6vw, 82px);
  align-items: start;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.trust-grid article {
  padding: 26px;
}

.trust-grid svg {
  width: 24px;
  height: 24px;
  color: var(--blue);
}

.trust-card-head h3 {
  margin-bottom: 0;
}

.trust-grid p {
  margin-top: 14px;
  margin-bottom: 0;
}

.method-layout,
.faq-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(560px, 1fr);
  gap: clamp(34px, 6vw, 76px);
  align-items: start;
}

.sticky-intro {
  position: sticky;
  top: 112px;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline article {
  display: grid;
  grid-template-columns: 76px minmax(180px, 220px) minmax(320px, 1fr);
  gap: 22px;
  border-bottom: 1px solid var(--line);
  padding: 0 0 28px;
}

.timeline span {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border-radius: 8px;
  background: var(--teal);
  color: var(--white);
  font-weight: 900;
}

.timeline h3,
.timeline p {
  margin-bottom: 0;
  padding-top: 4px;
}

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

.case-card,
.article-card {
  /* min-height: 280px; */
  padding: 28px;
}

.case-card strong {
  display: block;
  margin-top: 20px;
  font-size: 0.96rem;
}

.article-card a {
  display: inline-flex;
  margin-top: 18px;
  color: var(--blue-dark);
  font-weight: 900;
  text-underline-offset: 5px;
}
.article-card a:hover {color:var(--blue);}

.tool-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.tool-accordion-list {
  display: grid;
  gap: 24px;
}

.tool-category {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 30px rgba(11, 31, 58, 0.05);
}

.tool-category summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 104px;
  padding: 22px 24px;
  cursor: pointer;
  list-style: none;
}

.tool-category summary::-webkit-details-marker {
  display: none;
}

.tool-category summary span,
.tool-category summary strong,
.tool-category summary em {
  display: block;
}

.tool-category summary strong {
  color: var(--ink);
  font-size: 1.35rem;
  line-height: 1.15;
}

.tool-category summary em {
  margin-top: 6px;
  color: var(--muted);
  font-style: normal;
  font-size: .875rem;
}

.tool-category summary b {
  border-radius: 8px;
  padding: 8px 12px;
  background: #f1f6fc;
  color: var(--blue);
  white-space: nowrap;
  font-size: .75rem;
}

.tool-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  border-top: 1px solid var(--line);
  padding: 24px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
  background: var(--white);
  color: var(--ink-soft);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease,
    color 160ms ease;
}

.tool-card span {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.tool-card strong {
  color: var(--ink);
  font-size:.875rem;
  line-height: 1.35;
}

.tool-card svg {
  width: 18px;
  height: 18px;
  color: #8ba0b3;
  flex: 0 0 auto;
  transition: color 160ms ease;
}

.tool-card small {
  display: -webkit-box;
  margin-top: 18px;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.6;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.tool-card:hover {
  border-color: rgba(30, 107, 255, 0.36);
  color: var(--teal);
  box-shadow: 0 16px 34px rgba(11, 31, 58, 0.1);
  transform: translateY(-4px);
}

.tool-card:hover strong,
.tool-card:hover svg {
  color: var(--teal);
}

.tools-preview-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.62fr) minmax(0, 1fr);
  gap: 46px;
  align-items: center;
}

.tools-preview-layout .section-intro {
  margin-bottom: 0;
}

.tools-preview-layout .button {
  margin-top: 10px;
}

.featured-tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.featured-tool-card {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  /* min-height: 112px; */
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: var(--white);
  box-shadow: 0 10px 28px rgba(11, 31, 58, 0.05);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.featured-tool-card:hover {
  border-color: rgba(30, 107, 255, 0.32);
  box-shadow: 0 16px 34px rgba(11, 31, 58, 0.09);
  transform: translateY(-3px);
}

.featured-tool-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  background: var(--teal-soft);
  color: var(--blue);
}

.featured-tool-icon svg {
  width: 19px;
  height: 19px;
}

.featured-tool-copy,
.featured-tool-copy strong,
.featured-tool-copy small {
  display: block;
}

.featured-tool-copy strong {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink);
  font-size: 0.98rem;
  line-height: 1.25;
}

.featured-tool-copy strong svg {
  width: 15px;
  height: 15px;
  color: #94a3b8;
  flex: 0 0 auto;
}

.featured-tool-copy small {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.article-detail {
  max-width: min(100% - 40px, var(--max));
  font-size: 1.08rem;
}

.article-detail p {
  color: var(--ink-soft);
}

.tool-list div {
  min-height: 96px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: var(--white);
}

.tool-list strong,
.tool-list span {
  display: block;
}

.tool-list strong {
  color: var(--ink);
}

.tool-list span {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.about-section {
  border-top: 1px solid var(--line);
}

.about-copy {
  display: grid;
  gap: 18px;
  font-size: 1rem;
}

.about-stack {
  display: grid;
  gap: 26px;
  max-width: min(100% - 40px, var(--max));
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 22px;
  padding: 20px 24px;
  cursor: pointer;
  color: var(--ink);
  font-weight: 900;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  color: var(--blue);
  font-size: 1.45rem;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "-";
}

.faq-list p {
  margin: 0;
  padding: 0 24px 24px;
}

.section-contact {
  background: var(--white);
  color: var(--ink);
  border-top: 1px solid var(--mist);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 520px);
  gap: clamp(36px, 7vw, 90px);
  align-items: start;
}

.contact-grid h2 {
  color: var(--ink);
}

.contact-grid p {
  max-width: 660px;
  color: var(--ink);
}

.contact-points {
  margin-top: 28px;
}

.contact-points span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--paper)
}

.contact-points svg {
  color: var(--blue);
}

.contact-form {
  display: grid;
  gap: 16px;
  border-radius: 8px;
  padding: 28px;
  background: var(--white);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.form-status {
  margin: 0;
  border-radius: 8px;
  padding: 12px 14px;
  font-weight: 800;
}

.form-status.success {
  border: 1px solid rgba(30, 107, 255, 0.2);
  background: rgba(30, 107, 255, 0.08);
  color: var(--teal);
}

.form-status.error {
  border: 1px solid rgba(255, 117, 95, 0.32);
  background: rgba(255, 117, 95, 0.1);
  color: #a33b2d;
}

.field-trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.turnstile-wrap {
  min-height: 65px;
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: var(--ink-soft);
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--ink);
  background: var(--paper);
}

.contact-form textarea {
  resize: vertical;
}

.contact-form .button {
  width: 100%;
  margin-top: 4px;
}

.contact-form .button:disabled,
.contact-form .button[disabled] {
  cursor: wait;
  opacity: 0.72;
}

.site-footer {
  background: #0b1f3a;
  color: rgba(255, 255, 255, 0.76);
  padding: 64px 0 28px;
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 40;
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid rgba(30, 107, 255, 0.24);
  border-radius: 999px;
  background: var(--blue);
  color: var(--white);
  opacity: 0;
  pointer-events: none;
  box-shadow: 0 14px 30px rgba(30, 107, 255, 0.24);
  transform: translateY(12px);
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

.site-footer .brand-mark {
  background: var(--white);
  color: var(--teal);
  box-shadow: none;
}

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

.site-footer .brand small {
  color: rgba(255, 255, 255, 0.66);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1fr);
  gap: clamp(36px, 7vw, 90px);
  padding-bottom: 44px;
}

.footer-brand p {
  max-width: 430px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.footer-columns div {
  display: grid;
  gap: 10px;
}

.footer-columns strong {
  margin-bottom: 8px;
  color: var(--white);
}

.footer-columns a {
  color: rgba(255, 255, 255, 0.72);
}

.footer-columns a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 22px;
  font-size: 0.9rem;
}

@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .nav,
  .header-cta {
    display: none;
  }

  .menu-button {
    display: grid;
    justify-self: end;
  }

  .nav.is-open {
    position: absolute;
    top: 78px;
    left: 20px;
    right: 20px;
    display: grid;
    justify-content: stretch;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 8px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .nav.is-open a {
    padding: 13px 12px;
  }

  .hero-grid,
  .trust-layout,
  .tools-layout,
  .about-layout,
  .tools-preview-layout,
  .method-layout,
  .faq-layout,
  .contact-grid,
  .footer-main,
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .growth-board {
    min-height: 440px;
  }

  .service-grid,
  .case-grid,
  .article-grid,
  .tool-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sticky-intro {
    position: static;
  }

  .detail-nav {
    position: static;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, var(--max));
  }

  .site-header {
    padding: 12px 14px;
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 110px;
  }

  .page-hero {
    padding: 120px 0 64px;
  }

  .hero-grid {
    gap: 34px;
  }

  h1 {
    font-size: 2.72rem;
  }

  h2 {
    font-size: 2rem;
  }

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

  .button {
    min-height: 50px;
  }

  .hero-stats,
  .service-grid,
  .trust-grid,
  .case-grid,
  .article-grid,
  .tool-list,
  .tool-card-grid,
  .featured-tool-grid,
  .check-grid,
  .footer-columns,
  .split-intro {
    grid-template-columns: 1fr;
  }

  .tool-category summary {
    align-items: flex-start;
    flex-direction: column;
  }

  .tool-card-grid {
    padding: 18px;
  }

  .growth-board {
    min-height: auto;
    display: grid;
    gap: 12px;
  }

  .board-line {
    display: none;
  }

  .signal-card {
    position: static;
    width: 100%;
    animation: none;
  }

  .timeline article {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .timeline span {
    width: 46px;
    height: 46px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}