/* ============================================================
   K Code — kcode.dev
   Light, fresh, business-friendly design system
   ============================================================ */

:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-soft: #f4f9fc;
  --bg-tint: #e8f5fa;
  --text: #1e2c3d;
  --text-sub: #4b5d72;
  --text-faint: #74869b;
  --border: #e3eaf1;
  --border-strong: #cfdae5;
  --primary: #0284c7;      /* sky-600 */
  --primary-deep: #0369a1; /* sky-700 */
  --teal: #0d9488;         /* teal-600 */
  --teal-soft: #99f6e4;
  --sky-soft: #bae6fd;
  --grad: linear-gradient(135deg, #0ea5e9 0%, #14b8a6 100%);
  --grad-text: linear-gradient(135deg, #0284c7 0%, #0d9488 100%);
  --shadow-sm: 0 1px 2px rgba(30, 44, 61, 0.05);
  --shadow-md: 0 6px 24px -8px rgba(2, 132, 199, 0.18);
  --shadow-lg: 0 16px 40px -12px rgba(2, 132, 199, 0.22);
  --radius: 16px;
  --radius-lg: 24px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial,
    "Hiragino Kaku Gothic ProN", "Hiragino Sans", "BIZ UDPGothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  overflow-x: hidden;
}

:lang(en) body,
body:lang(en) { line-height: 1.75; }

img, svg { max-width: 100%; height: auto; vertical-align: middle; }

a { color: var(--primary-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

h1, h2, h3, h4 {
  line-height: 1.4;
  letter-spacing: 0.01em;
  font-weight: 700;
  margin: 0 0 0.5em;
}

p { margin: 0 0 1em; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  max-width: 1180px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.brand .brand-code {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.site-nav { display: flex; align-items: center; gap: 28px; }

.site-nav a {
  color: var(--text-sub);
  font-size: 14.5px;
  font-weight: 500;
}
.site-nav a:hover { color: var(--primary-deep); text-decoration: none; }

.lang-switch {
  display: inline-block;
  padding: 4px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-sub);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.lang-switch:hover { border-color: var(--primary); color: var(--primary-deep); text-decoration: none; }

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
  color: var(--text);
}
.menu-toggle svg { width: 24px; height: 24px; }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 16px;
    box-shadow: var(--shadow-md);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 4px; font-size: 15px; }
  .lang-switch { align-self: flex-start; margin-top: 8px; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(56, 189, 248, 0.16) 0%, transparent 70%),
    radial-gradient(700px 420px at 5% 30%, rgba(45, 212, 191, 0.14) 0%, transparent 70%),
    linear-gradient(180deg, #f2fafd 0%, #ffffff 90%);
  padding: 96px 0 72px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--sky-soft);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
}

.hero h1 {
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.35;
  margin-bottom: 24px;
}

.hero .lead {
  color: var(--text-sub);
  font-size: clamp(1rem, 2vw, 1.13rem);
  max-width: 720px;
  margin: 0 auto 40px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 34px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { box-shadow: var(--shadow-lg); }

.btn-ghost {
  background: #fff;
  border: 1px solid var(--border-strong);
  color: var(--text-sub);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-deep); }

/* hero flow strip */
.flow-strip {
  margin: 56px auto 0;
  max-width: 860px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}
.flow-strip .flow-caption {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 12px;
  font-weight: 600;
}
.flow-items {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 10px;
  font-size: 14px;
  font-weight: 600;
}
.flow-items .node {
  padding: 6px 16px;
  border-radius: 10px;
  white-space: nowrap;
}
.flow-items .arrow { color: var(--border-strong); font-weight: 400; }
.node-sky   { background: #e0f2fe; color: #075985; }
.node-teal  { background: #ccfbf1; color: #115e59; }
.node-indigo{ background: #e0e7ff; color: #3730a3; }
.node-amber { background: #fef3c7; color: #92400e; }
.node-violet{ background: #ede9fe; color: #5b21b6; }
.node-rose  { background: #ffe4e6; color: #9f1239; }

.hero-visual {
  margin: 56px auto -8px;
  max-width: 860px;
}
.hero-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

/* ---------- Sections ---------- */

.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }

.section-label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  margin-bottom: 16px;
}

.section-head .section-sub { color: var(--text-sub); margin: 0; }

/* ---------- Cards ---------- */

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--sky-soft);
}

a.card { color: inherit; display: block; }
a.card:hover { text-decoration: none; }

.card h3 { font-size: 1.13rem; margin-bottom: 10px; }
.card p { color: var(--text-sub); font-size: 14.5px; margin: 0; }

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #fff;
  background: var(--grad);
  box-shadow: var(--shadow-sm);
}
.card-icon svg { width: 24px; height: 24px; }
.card-icon.icon-sky    { background: linear-gradient(135deg, #38bdf8, #0284c7); }
.card-icon.icon-teal   { background: linear-gradient(135deg, #2dd4bf, #0d9488); }
.card-icon.icon-indigo { background: linear-gradient(135deg, #818cf8, #4f46e5); }
.card-icon.icon-amber  { background: linear-gradient(135deg, #fbbf24, #d97706); }
.card-icon.icon-violet { background: linear-gradient(135deg, #a78bfa, #7c3aed); }
.card-icon.icon-rose   { background: linear-gradient(135deg, #fb7185, #e11d48); }
.card-icon.icon-green  { background: linear-gradient(135deg, #34d399, #059669); }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag {
  padding: 3px 12px;
  border-radius: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text-sub);
  font-size: 12.5px;
  white-space: nowrap;
}

/* strengths */
.strengths {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  box-shadow: var(--shadow-sm);
  margin-top: 48px;
}
.strengths h3 { text-align: center; font-size: 1.35rem; margin-bottom: 28px; }
.strength-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 28px; }
@media (max-width: 768px) { .strength-list { grid-template-columns: 1fr; } }
.strength-item { display: flex; gap: 14px; align-items: flex-start; padding: 10px 4px; }
.strength-item .s-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--bg-tint);
  color: var(--primary-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}
.strength-item .s-icon svg { width: 18px; height: 18px; }
.strength-item p { color: var(--text-sub); font-size: 14.5px; margin: 0; }

/* ---------- Process ---------- */

.steps { max-width: 760px; margin: 0 auto; }
.step { display: flex; gap: 24px; position: relative; }
.step-marker { display: flex; flex-direction: column; align-items: center; }
.step-num {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--sky-soft);
  color: var(--primary-deep);
  font-weight: 700;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}
.step-line {
  width: 2px;
  flex: 1;
  min-height: 32px;
  margin: 8px 0;
  background: linear-gradient(180deg, var(--sky-soft), transparent);
}
.step-body { padding-bottom: 40px; }
.step:last-child .step-body { padding-bottom: 0; }
.step h3 { font-size: 1.15rem; margin-bottom: 8px; }
.step p { color: var(--text-sub); font-size: 15px; margin: 0; }

.cta-box {
  margin: 64px auto 0;
  max-width: 760px;
  text-align: center;
  background: linear-gradient(135deg, #eff9fe 0%, #effcf9 100%);
  border: 1px solid var(--sky-soft);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
}
.cta-box p { color: var(--text-sub); margin-bottom: 24px; }

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
}

.form-field { margin-bottom: 22px; }
.form-field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.req { color: #e11d48; }

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 15px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
}
.form-field textarea { resize: vertical; min-height: 140px; }
.form-field input::placeholder,
.form-field textarea::placeholder { color: #a4b2c2; }

.form-submit {
  width: 100%;
  border: 0;
  cursor: pointer;
  font: inherit;
}
.form-submit:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.form-msg { font-size: 14px; text-align: center; margin: 14px 0 0; }
.form-msg.error { color: #dc2626; }
.form-msg.cooldown { color: #b45309; }

.form-success { text-align: center; padding: 48px 12px; }
.form-success .success-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}
.form-success .success-icon svg { width: 34px; height: 34px; }
.form-success h3 { font-size: 1.25rem; }
.form-success p { color: var(--text-sub); }
.form-success button {
  background: none;
  border: 0;
  color: var(--primary-deep);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  text-decoration: underline;
}

.contact-aside { display: flex; flex-direction: column; gap: 20px; }

.contact-link {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  color: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.contact-link:hover { text-decoration: none; border-color: var(--sky-soft); box-shadow: var(--shadow-md); }
.contact-link .c-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-tint);
  color: var(--primary-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-link .c-icon svg { width: 22px; height: 22px; }
.contact-link .c-label { font-size: 12.5px; color: var(--text-faint); }
.contact-link .c-value { font-weight: 600; font-size: 15px; color: var(--text); }

.info-box {
  background: linear-gradient(135deg, #eff9fe 0%, #effcf9 100%);
  border: 1px solid var(--sky-soft);
  border-radius: var(--radius);
  padding: 24px;
}
.info-box h4 { font-size: 15px; margin-bottom: 8px; }
.info-box p { color: var(--text-sub); font-size: 14px; margin: 0; }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.footer-nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-nav a { color: var(--text-sub); font-size: 13.5px; }
.footer-nav a:hover { color: var(--primary-deep); }
.footer-meta { color: var(--text-faint); font-size: 13px; }
.footer-meta a { color: inherit; }
@media (max-width: 768px) {
  .footer-inner { flex-direction: column; text-align: center; justify-content: center; }
}

/* ---------- Case studies ---------- */

.page-hero {
  background:
    radial-gradient(700px 360px at 90% -20%, rgba(56, 189, 248, 0.14) 0%, transparent 70%),
    linear-gradient(180deg, #f2fafd 0%, #ffffff 100%);
  padding: 72px 0 48px;
}

.breadcrumb {
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: 28px;
}
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: var(--border-strong); }
.breadcrumb a { color: var(--text-faint); }
.breadcrumb a:hover { color: var(--primary-deep); }

.cs-header .card-icon { width: 56px; height: 56px; border-radius: 14px; margin-bottom: 24px; }
.cs-header .card-icon svg { width: 28px; height: 28px; }
.cs-header h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); margin-bottom: 8px; }
.cs-header .cs-subtitle { color: var(--text-sub); font-size: 1.05rem; margin-bottom: 20px; }

.cs-section { padding: 40px 0 0; }
.cs-section:last-of-type { padding-bottom: 72px; }
.cs-label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 14px;
}
.cs-body { max-width: 780px; }
.cs-body > p { color: var(--text-sub); font-size: 1.02rem; }

.action-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.action-head { display: flex; gap: 16px; align-items: flex-start; }
.action-num {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--grad);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.action-head h3 { font-size: 1.08rem; margin: 3px 0 4px; }
.action-head .action-desc { color: var(--text-sub); font-size: 14.5px; margin: 0; }
.action-card ul {
  margin: 16px 0 0 50px;
  padding: 0;
  list-style: none;
  color: var(--text-sub);
  font-size: 14px;
}
.action-card ul li { padding-left: 18px; position: relative; margin-bottom: 8px; }
.action-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal-soft);
  border: 1px solid var(--teal);
}
@media (max-width: 640px) { .action-card ul { margin-left: 0; } }

.decision-list, .result-list { list-style: none; margin: 0; padding: 0; }

.decision-box {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.decision-list li {
  display: flex;
  gap: 12px;
  color: var(--text-sub);
  font-size: 14.5px;
  margin-bottom: 12px;
}
.decision-list li:last-child { margin-bottom: 0; }
.decision-list .d-arrow { color: var(--teal); font-weight: 700; flex-shrink: 0; }

.result-box {
  background: linear-gradient(135deg, #eff9fe 0%, #effcf9 100%);
  border: 1px solid var(--sky-soft);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.result-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 16px; }
.result-list li:last-child { margin-bottom: 0; }
.result-list .check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}
.result-list .check svg { width: 13px; height: 13px; }
.result-list span:last-child { color: var(--text-sub); }

.next-case {
  border-top: 1px solid var(--border);
  padding: 40px 0 80px;
}
.next-case .next-label { font-size: 13px; color: var(--text-faint); margin-bottom: 14px; }
.next-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.next-card .n-title { font-weight: 700; }
.next-card .n-sub { color: var(--text-faint); font-size: 13.5px; }
.next-card svg { width: 22px; height: 22px; color: var(--text-faint); flex-shrink: 0; transition: transform 0.2s ease; }
.next-card:hover svg { transform: translateX(4px); }

/* case list page */
.cs-list-card { display: flex; gap: 28px; margin-bottom: 24px; }
.cs-list-card .card-icon { flex-shrink: 0; }
.cs-list-card h2 { font-size: 1.3rem; margin-bottom: 4px; }
.cs-list-card .cs-sub { color: var(--text-faint); font-size: 14px; margin-bottom: 14px; }
.cs-list-card .cs-desc { color: var(--text-sub); font-size: 14.5px; }
.cs-list-card .read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-weight: 600;
  font-size: 14.5px;
  color: var(--primary-deep);
}
.cs-list-card .read-more svg { width: 16px; height: 16px; transition: transform 0.2s ease; }
a.card:hover .read-more svg { transform: translateX(3px); }
@media (max-width: 640px) { .cs-list-card { flex-direction: column; gap: 16px; } }

.connect-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  margin: 0 auto 56px;
  max-width: 860px;
  text-align: center;
}

/* stats row (EN hero) */
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 640px;
  margin: 56px auto 0;
}
.stat-row .stat-label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 6px;
}
.stat-row .stat-value { font-weight: 700; font-size: clamp(1rem, 2.4vw, 1.3rem); }
@media (max-width: 560px) { .stat-row { grid-template-columns: 1fr; gap: 16px; } }

/* approach list (EN) */
.approach-item { display: flex; gap: 16px; align-items: flex-start; }
.approach-item .a-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--primary-deep);
  display: flex;
  align-items: center;
  justify-content: center;
}
.approach-item .a-icon svg { width: 20px; height: 20px; }
.approach-item h3 { font-size: 1.05rem; margin-bottom: 6px; }
.approach-item p { color: var(--text-sub); font-size: 14.5px; margin: 0; }

.skill-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 40px; }
.skill-chips .tag { background: #fff; }

/* ---------- Reveal animation (progressive enhancement) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .js .reveal.visible { opacity: 1; transform: none; }
}

/* ---------- Utilities ---------- */

.pc-only { display: none; }
@media (min-width: 768px) { .pc-only { display: inline; } }

.center { text-align: center; }
.mt-lg { margin-top: 48px; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}