:root {
  color-scheme: light;
  --ink: #071521;
  --ink-soft: #304154;
  --muted: #667386;
  --hairline: rgba(8, 28, 44, 0.11);
  --bg: #f4f7fb;
  --bg-deep: #061827;
  --night: #03111f;
  --night-2: #08243a;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #ffffff;
  --brand: #078c99;
  --brand-2: #18c4d7;
  --electric: #62f3ff;
  --accent: #ff8a5f;
  --accent-soft: #fff0e9;
  --cyan-soft: #e7fbfd;
  --shadow: 0 28px 80px rgba(9, 31, 52, 0.13);
  --shadow-strong: 0 36px 110px rgba(2, 15, 27, 0.28);
  --radius-xl: 36px;
  --radius-lg: 26px;
  --radius-md: 18px;
  --shell: 1180px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% -10%, rgba(24, 196, 215, 0.22), transparent 34rem),
    radial-gradient(circle at 90% 8%, rgba(255, 138, 95, 0.16), transparent 32rem),
    linear-gradient(180deg, #fafdff 0%, var(--bg) 44%, #eef3f8 100%);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--brand);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #056b75;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(255, 138, 95, 0.7);
  outline-offset: 5px;
  border-radius: 12px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  border-radius: 0 0 12px 12px;
  background: var(--bg-deep);
  color: #fff;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

.language-suggestion {
  border-bottom: 1px solid rgba(133, 102, 17, 0.18);
  color: #1f1806;
  background:
    linear-gradient(90deg, rgba(255, 249, 219, 0.98), rgba(255, 244, 191, 0.98));
}

.language-suggestion[hidden] {
  display: none;
}

.language-suggestion-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 56px;
  padding-block: 0.48rem;
}

.language-suggestion p {
  margin: 0;
  font-size: 0.96rem;
  font-weight: 820;
  letter-spacing: -0.01em;
}

.language-suggestion-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex: 0 0 auto;
}

.language-suggestion-primary,
.language-suggestion-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0.44rem 0.86rem;
  border-radius: 8px;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 820;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
}

.language-suggestion-primary {
  border: 1px solid #17130a;
  color: #fff;
  background: #17130a;
}

.language-suggestion-primary:hover {
  color: #fff;
  background: #2a2316;
}

.language-suggestion-secondary {
  border: 1px solid rgba(133, 102, 17, 0.42);
  color: #33270a;
  background: rgba(255, 255, 255, 0.4);
}

.language-suggestion-secondary:hover {
  background: rgba(255, 255, 255, 0.7);
}

.shell {
  width: min(calc(100% - 2rem), var(--shell));
  margin-inline: auto;
}

.narrow {
  width: min(calc(100% - 2rem), 860px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(7, 21, 33, 0.08);
  background: rgba(250, 253, 255, 0.78);
  backdrop-filter: blur(22px);
}

.home-page .site-header {
  border-bottom-color: rgba(255, 255, 255, 0.1);
  background: rgba(3, 17, 31, 0.82);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.home-page .brand {
  color: #fff;
}

.brand img {
  border-radius: 11px;
  box-shadow: 0 12px 26px rgba(5, 98, 110, 0.18);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.nav-links a,
.nav-cta {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0.52rem 0.78rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 720;
  text-decoration: none;
}

.home-page .nav-links a {
  color: rgba(255, 255, 255, 0.66);
}

.home-page .nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-links a[aria-current="page"] {
  color: var(--brand);
  background: var(--cyan-soft);
}

.language-switch {
  position: relative;
  flex: 0 0 auto;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.language-switch summary {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.42rem 0.82rem;
  border: 1px solid rgba(7, 21, 33, 0.1);
  border-radius: 999px;
  color: var(--brand);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 820;
  line-height: 1;
  list-style: none;
  white-space: nowrap;
}

.language-switch summary::-webkit-details-marker {
  display: none;
}

.language-switch summary::after {
  content: "⌄";
  margin-left: 0.42rem;
  color: var(--brand);
  font-size: 0.9em;
}

.language-switch[open] summary {
  color: #fff;
  background: var(--brand);
}

.language-switch[open] summary::after {
  color: currentColor;
}

.language-menu-panel {
  position: absolute;
  top: calc(100% + 0.55rem);
  right: 0;
  z-index: 40;
  display: grid;
  width: max-content;
  min-width: 210px;
  max-width: min(320px, calc(100vw - 2rem));
  max-height: min(520px, calc(100vh - 7rem));
  overflow: auto;
  padding: 0.45rem;
  border: 1px solid rgba(7, 21, 33, 0.1);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 24px 60px rgba(7, 21, 33, 0.18);
  backdrop-filter: blur(18px);
}

.language-menu-panel a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 38px;
  padding: 0.5rem 0.7rem;
  border-radius: 14px;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 780;
  text-decoration: none;
  white-space: nowrap;
}

.language-menu-panel a:hover {
  color: var(--brand);
  background: var(--cyan-soft);
}

.language-menu-panel a[aria-current="true"] {
  color: #fff;
  background: var(--brand);
}

.home-page .language-switch summary {
  border-color: rgba(255, 255, 255, 0.14);
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.home-page .language-switch[open] summary {
  color: #06212a;
  background: #e7f7fa;
}

.nav-cta {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #056874);
  box-shadow: 0 14px 30px rgba(7, 140, 153, 0.2);
}

.hero-section {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(4.8rem, 8vw, 8.4rem) 0 clamp(4rem, 7vw, 7rem);
  color: #fff;
  background:
    radial-gradient(circle at 18% 20%, rgba(98, 243, 255, 0.18), transparent 24rem),
    radial-gradient(circle at 82% 12%, rgba(255, 138, 95, 0.18), transparent 26rem),
    radial-gradient(circle at 60% 100%, rgba(7, 140, 153, 0.28), transparent 34rem),
    linear-gradient(135deg, var(--night) 0%, #071a2d 44%, var(--night-2) 100%);
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 82%);
  pointer-events: none;
}

.hero-section::after {
  content: "";
  position: absolute;
  inset: auto -10% -36% 26%;
  z-index: -1;
  height: 44rem;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(98, 243, 255, 0.22), transparent 66%);
  filter: blur(18px);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.25fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.home-page .hero-section .eyebrow {
  color: var(--electric);
  letter-spacing: 0.12em;
  text-transform: none;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0 0 1.25rem;
}

.hero-badges span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0.38rem 0.72rem;
  border: 1px solid rgba(98, 243, 255, 0.25);
  border-radius: 999px;
  color: rgba(235, 253, 255, 0.9);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  font-size: 0.78rem;
  font-weight: 820;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.13;
  letter-spacing: -0.055em;
}

h1 {
  max-width: 8.2em;
  font-size: clamp(3.1rem, 7vw, 6.2rem);
  word-break: keep-all;
  overflow-wrap: normal;
}

.home-page .hero-copy h1 {
  max-width: 8.6em;
  color: #fff;
  text-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

h2 {
  font-size: clamp(2.05rem, 5vw, 4.4rem);
}

h3 {
  font-size: 1.2rem;
  letter-spacing: -0.035em;
}

.lead,
.section-lead {
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  font-weight: 540;
}

.lead {
  max-width: 42rem;
  margin: 1.4rem 0 0;
}

.home-page .hero-section .lead {
  color: rgba(235, 248, 252, 0.78);
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.85rem 1.22rem;
  border-radius: 999px;
  font-weight: 850;
  text-decoration: none;
}

.button.primary {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), transparent 34%),
    linear-gradient(135deg, var(--brand-2), var(--brand) 44%, #045d68);
  box-shadow:
    0 18px 42px rgba(7, 140, 153, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--hairline);
}

.home-page .button.secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 2.2rem 0 0;
}

.trust-strip div {
  padding: 1rem;
  border: 1px solid var(--hairline);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 45px rgba(7, 21, 33, 0.06);
}

.home-page .trust-strip div {
  border-color: rgba(255, 255, 255, 0.14);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.055));
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.16);
}

.trust-strip dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 720;
}

.home-page .trust-strip dt {
  color: rgba(235, 248, 252, 0.58);
}

.trust-strip dd {
  margin: 0.18rem 0 0;
  color: var(--ink);
  font-size: 0.96rem;
  font-weight: 840;
}

.home-page .trust-strip dd {
  color: #fff;
}

.hero-visual {
  position: relative;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 8% -3% -5% 3%;
  border-radius: 42px;
  background: linear-gradient(135deg, rgba(98, 243, 255, 0.4), rgba(255, 138, 95, 0.18));
  filter: blur(34px);
  opacity: 0.72;
  pointer-events: none;
}

.screen-frame {
  position: relative;
  overflow: hidden;
  padding-top: 34px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 34px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.08)),
    rgba(4, 16, 29, 0.78);
  box-shadow:
    0 44px 120px rgba(0, 0, 0, 0.48),
    0 0 0 1px rgba(98, 243, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(22px);
}

.screen-frame::before {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  height: 34px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
  font-weight: 830;
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06));
}

.screen-frame::after {
  content: "";
  position: absolute;
  top: 12px;
  left: 16px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #ff685f;
  box-shadow: 16px 0 #ffc557, 32px 0 #46d980;
}

.screen-frame img {
  display: block;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.floating-card {
  position: absolute;
  display: grid;
  gap: 0.05rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(98, 243, 255, 0.22);
  border-radius: 18px;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.06)),
    rgba(6, 24, 39, 0.72);
  box-shadow: 0 26px 72px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(20px);
}

.floating-card .metric {
  font-size: 1.5rem;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.floating-card span:last-child {
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.8rem;
  font-weight: 720;
}

.card-a {
  left: -1rem;
  bottom: 2rem;
}

.card-b {
  right: 1.2rem;
  top: -1rem;
}

.proof-bar {
  padding: 1rem 0;
  border-block: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(90deg, #061827, #063d46 48%, #061827);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}

.proof-grid p {
  margin: 0;
  color: rgba(235, 248, 252, 0.7);
  font-size: 0.93rem;
  font-weight: 780;
  text-align: center;
}

.section {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.2rem;
}

.section-heading p,
.section-lead {
  margin: 1rem 0 0;
}

.feature-grid,
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-card,
.usecase-grid article,
.article-card,
.toc-card {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: 0 22px 70px rgba(7, 21, 33, 0.07);
  backdrop-filter: blur(20px);
}

.feature-card,
.usecase-grid article {
  position: relative;
  overflow: hidden;
  padding: 1.45rem;
}

.feature-card::before,
.usecase-grid article::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-2), transparent);
  opacity: 0.42;
}

.feature-card.highlight {
  color: #fff;
  background:
    radial-gradient(circle at 28% 20%, rgba(98, 243, 255, 0.3), transparent 12rem),
    radial-gradient(circle at 100% 0%, rgba(24, 196, 215, 0.36), transparent 16rem),
    linear-gradient(145deg, #082236, #0a5f6b);
  box-shadow:
    0 28px 90px rgba(6, 24, 39, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

.feature-card p,
.usecase-grid p {
  margin: 0.8rem 0 0;
  color: var(--muted);
}

.feature-card.highlight p {
  color: rgba(255, 255, 255, 0.78);
}

.icon-badge {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 1.1rem;
  border-radius: 14px;
  color: var(--brand);
  background: var(--cyan-soft);
  font-weight: 900;
}

.highlight .icon-badge {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
}

.workflow-section {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.46), rgba(255, 255, 255, 0.12)),
    radial-gradient(circle at 20% 20%, rgba(255, 138, 95, 0.12), transparent 34rem);
}

.workflow-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 4.4rem);
  align-items: center;
}

.step-list {
  display: grid;
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.step-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1rem;
  padding: 1.1rem;
  border: 1px solid var(--hairline);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.76);
}

.step-list span {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  color: #fff;
  background: var(--bg-deep);
  font-weight: 900;
}

.step-list p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.media-stack {
  display: grid;
  gap: 1rem;
}

.media-stack img {
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.dark-section {
  color: #fff;
  background:
    radial-gradient(circle at 20% 0%, rgba(24, 196, 215, 0.2), transparent 34rem),
    linear-gradient(140deg, #061827 0%, #082c45 56%, #063d46 100%);
}

.dark-section .eyebrow {
  color: #86f2fb;
}

.dark-section p {
  color: rgba(255, 255, 255, 0.72);
}

.quality-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.quality-list {
  display: grid;
  gap: 1rem;
}

.quality-list article {
  padding: 1.35rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.08);
}

.quality-list p {
  margin: 0.7rem 0 0;
}

.comparison-section {
  background: #fff;
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.65fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
}

.faq-list {
  display: grid;
  gap: 0.85rem;
}

details {
  border: 1px solid var(--hairline);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 50px rgba(7, 21, 33, 0.06);
}

summary {
  cursor: pointer;
  padding: 1.05rem 1.2rem;
  color: var(--ink);
  font-weight: 850;
}

details p {
  margin: 0;
  padding: 0 1.2rem 1.15rem;
  color: var(--muted);
}

.cta-section {
  padding: 0 0 clamp(4rem, 7vw, 7rem);
}

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.8rem, 4vw, 3rem);
  border-radius: var(--radius-xl);
  color: #fff;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 138, 95, 0.32), transparent 20rem),
    linear-gradient(135deg, #082236, #078c99);
  box-shadow: var(--shadow-strong);
}

.cta-panel .eyebrow,
.cta-panel p {
  color: rgba(255, 255, 255, 0.78);
}

.cta-panel h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.page-hero {
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(3rem, 6vw, 5rem);
  color: #fff;
  background:
    radial-gradient(circle at 80% 0%, rgba(24, 196, 215, 0.22), transparent 32rem),
    linear-gradient(135deg, #061827, #0b405f 55%, #087985);
}

.page-hero .eyebrow {
  color: #8ff4ff;
}

.page-hero h1 {
  max-width: 100%;
}

.page-hero .lead,
.page-hero .updated {
  color: rgba(255, 255, 255, 0.76);
}

.updated {
  margin: 1rem 0 0;
  font-weight: 740;
}

.privacy-hero {
  background:
    radial-gradient(circle at 90% 8%, rgba(255, 138, 95, 0.18), transparent 30rem),
    linear-gradient(135deg, #061827, #183045);
}

.support-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.toc-card {
  position: sticky;
  top: 96px;
  display: grid;
  padding: 0.7rem;
}

.toc-card a {
  padding: 0.72rem 0.9rem;
  border-radius: 14px;
  color: var(--muted);
  font-weight: 770;
  text-decoration: none;
}

.toc-card a:hover {
  color: var(--brand);
  background: var(--cyan-soft);
}

.article-card {
  padding: clamp(1.35rem, 4vw, 3rem);
}

.article-card section + section {
  margin-top: 3rem;
  padding-top: 3rem;
  border-top: 1px solid var(--hairline);
}

.article-card h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

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

.check-list {
  display: grid;
  gap: 0.8rem;
  margin: 1.2rem 0;
  padding-left: 1.25rem;
}

.check-list li {
  padding-left: 0.2rem;
  color: var(--ink-soft);
}

.notice,
.contact-panel {
  padding: 1.1rem 1.2rem;
  border: 1px solid rgba(7, 140, 153, 0.22);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(231, 251, 253, 0.92), rgba(255, 255, 255, 0.72));
}

.notice.positive {
  border-color: rgba(7, 140, 153, 0.25);
}

.contact-panel a {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 900;
}

.compact-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1.2rem;
}

.legal-copy p {
  max-width: 74ch;
}

.site-footer {
  padding: 3rem 0;
  color: rgba(255, 255, 255, 0.72);
  background: var(--bg-deep);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}

.footer-brand {
  color: #fff;
}

.site-footer p {
  max-width: 34rem;
  margin: 0.8rem 0 0;
}

.site-footer nav {
  display: grid;
  gap: 0.5rem;
  justify-items: end;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.82);
}

@media (max-width: 980px) {
  .hero-grid,
  .workflow-grid,
  .quality-grid,
  .faq-grid,
  .support-layout {
    grid-template-columns: 1fr;
  }

  .toc-card {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid,
  .usecase-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-links {
    display: none;
  }

  .hero-visual {
    transform: none;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 15px;
  }

  .language-suggestion-shell {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.55rem;
    padding-block: 0.72rem;
  }

  .language-suggestion-actions {
    width: 100%;
  }

  .language-suggestion-primary,
  .language-suggestion-secondary {
    flex: 1 1 0;
  }

  .nav-shell {
    min-height: 68px;
    gap: 0.7rem;
  }

  .brand span {
    display: none;
  }

  .language-switch summary {
    min-height: 30px;
    padding: 0.32rem 0.52rem;
    font-size: 0.76rem;
  }

  .nav-cta {
    min-height: 38px;
    padding: 0.42rem 0.68rem;
    font-size: 0.82rem;
  }

  .hero-section {
    padding-top: 3rem;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.8rem);
  }

  .trust-strip,
  .proof-grid,
  .feature-grid,
  .usecase-grid,
  .compact-grid,
  .toc-card,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .proof-grid p {
    text-align: left;
  }

  .card-a,
  .card-b {
    position: static;
    margin-top: 0.75rem;
  }

  .cta-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .site-footer nav {
    justify-items: start;
  }
}

@media print {
  .language-suggestion,
  .site-header,
  .hero-actions,
  .nav-cta,
  .site-footer {
    display: none;
  }

  body {
    background: #ffffff;
    color: #111827;
  }

  .hero-section,
  .section,
  .support-hero {
    padding-block: 1.5rem;
  }

  .screen-frame,
  .article-card,
  .feature-card,
  .usecase-card,
  .cta-panel {
    box-shadow: none;
  }
}