/* ==========================================================================
   LINE 解決ガイド — Shared stylesheet
   ========================================================================== */

:root {
  --green: #06c755;
  --green-dark: #05a34a;
  --green-darker: #03853c;
  --green-soft: #e6f9ee;
  --green-soft-2: #f2fbf6;
  --ink: #1f2933;
  --ink-2: #3e4c59;
  --gray: #5c6b7a;
  --gray-2: #8b98a5;
  --border: #e4e9ee;
  --bg: #f7f9fa;
  --white: #ffffff;
  --amber: #f59e0b;
  --amber-soft: #fff7e8;
  --red: #e05252;
  --red-soft: #fdecec;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(31, 41, 51, 0.08);
  --shadow-md: 0 6px 24px rgba(31, 41, 51, 0.09);
  --shadow-lg: 0 16px 48px rgba(31, 41, 51, 0.14);
  --font: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --maxw: 1120px;
  --maxw-article: 800px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--green-darker); text-decoration: none; }
a:hover { color: var(--green-dark); }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.05rem;
  color: var(--ink);
  white-space: nowrap;
}
.logo:hover { color: var(--ink); }
.logo svg { flex-shrink: 0; }
.logo .accent { color: var(--green-dark); }

.main-nav ul {
  display: flex;
  gap: 4px;
  list-style: none;
}
.main-nav a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--ink-2);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.2s, color 0.2s;
}
.main-nav a:hover {
  background: var(--green-soft);
  color: var(--green-darker);
}
.main-nav a.active {
  background: var(--green);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  position: relative;
  transition: transform 0.25s;
}
.nav-toggle span::before,
.nav-toggle span::after { content: ""; position: absolute; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
    padding: 12px 16px 20px;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 2px; }
  .main-nav a { padding: 12px 14px; border-radius: 10px; }
}

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
}
.btn-primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 6px 18px rgba(6, 199, 85, 0.35);
}
.btn-primary:hover {
  background: var(--green-dark);
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  border: 2px solid var(--green);
  color: var(--green-darker);
}
.btn-outline:hover {
  background: var(--green-soft);
  color: var(--green-darker);
}

/* ---------------- Page hero (home) ---------------- */

.page-hero {
  background:
    radial-gradient(900px 400px at 85% -10%, rgba(6, 199, 85, 0.18), transparent 60%),
    radial-gradient(700px 380px at -10% 110%, rgba(6, 199, 85, 0.12), transparent 60%),
    linear-gradient(180deg, #f0fbf5 0%, var(--bg) 100%);
  padding: 72px 0 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero-copy .kicker {
  display: inline-block;
  background: var(--green-soft);
  color: var(--green-darker);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero-copy h1 {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 900;
  line-height: 1.45;
  margin-bottom: 18px;
}
.hero-copy h1 .accent { color: var(--green-dark); }
.hero-copy p.lead {
  color: var(--gray);
  font-size: 1.05rem;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual { position: relative; }
.hero-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 340px;
  object-fit: cover;
}
.hero-visual .float-card {
  position: absolute;
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  padding: 12px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.float-card .dot {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: var(--green-soft);
}
.float-card.small { top: 18px; right: -14px; }
.float-card.big { bottom: -18px; left: -14px; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual img { height: 260px; }
  .float-card.small { right: 8px; }
  .float-card.big { left: 8px; }
}

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

.section { padding: 64px 0; }
.section-tight { padding: 40px 0; }

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .eyebrow {
  color: var(--green-dark);
  font-weight: 900;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 900;
  line-height: 1.5;
  margin-bottom: 12px;
}
.section-head p { color: var(--gray); }

/* ---------------- Article cards ---------------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.article-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}
.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}
.article-card .thumb {
  height: 180px;
  overflow: hidden;
}
.article-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.article-card:hover .thumb img { transform: scale(1.05); }

.article-card .body {
  padding: 22px 24px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 900;
  color: var(--green-darker);
  background: var(--green-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.article-card h3 {
  font-size: 1.06rem;
  font-weight: 800;
  line-height: 1.6;
  margin-bottom: 10px;
}
.article-card h3 a { color: var(--ink); }
.article-card h3 a:hover { color: var(--green-darker); }
.article-card p.excerpt {
  color: var(--gray);
  font-size: 0.9rem;
  flex: 1;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-link {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--green-darker);
}
.card-link .arrow { display: inline-block; transition: transform 0.2s; }
.article-card:hover .card-link .arrow { transform: translateX(4px); }

/* ---------------- Steps / features ---------------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}
.feature {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
}
.feature .icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--green-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}
.feature h3 { font-size: 1.02rem; font-weight: 800; margin-bottom: 8px; }
.feature p { color: var(--gray); font-size: 0.9rem; }

/* ---------------- CTA band ---------------- */

.cta-band {
  background: linear-gradient(120deg, var(--green) 0%, #0aa56a 55%, #089a78 100%);
  border-radius: var(--radius-lg);
  color: #fff;
  padding: 48px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-md);
}
.cta-band h2 { font-size: clamp(1.2rem, 2.4vw, 1.6rem); font-weight: 900; line-height: 1.55; margin-bottom: 6px; }
.cta-band p { opacity: 0.92; font-size: 0.95rem; }
.btn-white {
  background: #fff;
  color: var(--green-darker);
  box-shadow: var(--shadow-sm);
}
.btn-white:hover { transform: translateY(-2px); color: var(--green-darker); }

/* ---------------- Article page ---------------- */

.article-hero {
  background: linear-gradient(180deg, #eefaf3 0%, var(--bg) 100%);
  padding: 48px 0 0;
}
.article-hero-inner { max-width: var(--maxw-article); margin: 0 auto; padding: 0 20px; }
.breadcrumb {
  font-size: 0.82rem;
  color: var(--gray-2);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--gray); }
.breadcrumb span { margin: 0 6px; }

.article-title {
  font-size: clamp(1.5rem, 3.2vw, 2.15rem);
  font-weight: 900;
  line-height: 1.5;
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  color: var(--gray);
  font-size: 0.85rem;
  margin-bottom: 28px;
}
.article-meta .author {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--ink-2);
}
.article-meta .avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green-darker);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.85rem;
}
.article-hero-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin: 0 -20px 40px;
}
.article-hero-img img { width: 100%; height: 380px; object-fit: cover; }
@media (max-width: 720px) {
  .article-hero-img { margin: 0; border-radius: var(--radius); }
  .article-hero-img img { height: 240px; }
}

.article-body {
  max-width: var(--maxw-article);
  margin: 0 auto;
  padding: 8px 20px 64px;
}

/* TOC */
.toc {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 5px solid var(--green);
  border-radius: 12px;
  padding: 22px 26px;
  margin: 0 0 36px;
}
.toc h2 {
  font-size: 1rem;
  font-weight: 900;
  margin-bottom: 10px;
}
.toc ol { padding-left: 20px; }
.toc li { margin: 6px 0; font-size: 0.92rem; }

/* Article typography */
.article-body h2 {
  font-size: 1.45rem;
  font-weight: 900;
  line-height: 1.55;
  margin: 48px 0 18px;
  padding-left: 14px;
  border-left: 5px solid var(--green);
}
.article-body h3 {
  font-size: 1.12rem;
  font-weight: 800;
  margin: 30px 0 12px;
}
.article-body p { margin-bottom: 18px; }
.article-body ul, .article-body ol { margin: 0 0 20px 24px; }
.article-body li { margin-bottom: 10px; }
.article-body strong { color: var(--ink); }
.article-body a { text-decoration: underline; text-underline-offset: 3px; }

.steps {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  counter-reset: step;
}
.steps > li {
  position: relative;
  padding: 18px 18px 18px 66px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  counter-increment: step;
}
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
}
.steps > li .step-title { font-weight: 800; margin-bottom: 4px; display: block; }
.steps li code, .article-body code {
  font-family: "SF Mono", Consolas, Menlo, monospace;
  font-size: 0.88em;
  background: var(--green-soft-2);
  border: 1px solid var(--green-soft);
  border-radius: 6px;
  padding: 1px 7px;
  color: var(--green-darker);
}

/* Callouts */
.callout {
  border-radius: var(--radius);
  padding: 18px 20px 18px 54px;
  margin: 24px 0;
  position: relative;
  font-size: 0.94rem;
}
.callout::before {
  position: absolute;
  left: 18px;
  top: 16px;
  font-size: 1.25rem;
}
.callout.tip { background: var(--green-soft-2); border: 1px solid #bfe9d0; }
.callout.tip::before { content: "💡"; }
.callout.note { background: #eef4fb; border: 1px solid #cddff2; }
.callout.note::before { content: "📝"; }
.callout.warn { background: var(--amber-soft); border: 1px solid #f3ddb0; }
.callout.warn::before { content: "⚠️"; }
.callout .callout-title { font-weight: 900; display: block; margin-bottom: 4px; }

/* CTA box inside articles (link to techkosupa) */
.deep-dive {
  margin: 44px 0 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, var(--green) 0%, #0a9e86 100%);
  color: #fff;
  padding: 34px 32px;
  box-shadow: var(--shadow-md);
}
.deep-dive .dd-eyebrow {
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  opacity: 0.9;
  margin-bottom: 8px;
}
.deep-dive h3 { font-size: 1.15rem; font-weight: 900; margin-bottom: 8px; line-height: 1.6; }
.deep-dive p { font-size: 0.92rem; opacity: 0.94; margin-bottom: 18px; }
.deep-dive a.dd-btn {
  display: inline-block;
  background: #fff;
  color: var(--green-darker);
  font-weight: 800;
  padding: 12px 24px;
  border-radius: 999px;
  transition: transform 0.15s;
}
.deep-dive a.dd-btn:hover { transform: translateY(-2px); color: var(--green-darker); }

/* FAQ */
.faq details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  padding: 16px 44px 16px 18px;
  font-weight: 800;
  font-size: 0.97rem;
  position: relative;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  color: var(--green-dark);
  transition: transform 0.2s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details .faq-a { padding: 0 18px 18px; color: var(--ink-2); font-size: 0.94rem; }

/* Related */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 20px;
}
.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.related-card .tag { margin-bottom: 10px; }
.related-card h4 { font-size: 0.95rem; font-weight: 800; line-height: 1.6; margin-bottom: 8px; }
.related-card h4 a { color: var(--ink); }
.related-card h4 a:hover { color: var(--green-darker); }
.related-card p { font-size: 0.82rem; color: var(--gray-2); }
.ext { font-size: 0.8rem; color: var(--green-darker); font-weight: 700; white-space: nowrap; }

/* ---------------- About page ---------------- */

.about-hero { padding-bottom: 40px; }
.about-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 48px;
  align-items: start;
}
.about-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 88px;
}
.about-card img { width: 100%; height: 230px; object-fit: cover; }
.about-card .ac-body { padding: 24px; }
.about-card h3 { font-size: 1.2rem; font-weight: 900; }
.about-card .ac-sub { color: var(--gray); font-size: 0.88rem; margin-bottom: 16px; }
.about-card ul { list-style: none; }
.about-card li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--ink-2);
  padding: 7px 0;
  border-bottom: 1px dashed var(--border);
}
.about-card li:last-child { border-bottom: 0; }
.about-card li .k { color: var(--gray-2); min-width: 74px; font-weight: 700; }

.about-prose h2 {
  font-size: 1.4rem;
  font-weight: 900;
  margin: 44px 0 16px;
  padding-left: 14px;
  border-left: 5px solid var(--green);
}
.about-prose h2:first-child { margin-top: 8px; }
.about-prose p { margin-bottom: 18px; color: var(--ink-2); }
.about-prose ul { margin: 0 0 20px 24px; color: var(--ink-2); }
.about-prose li { margin-bottom: 8px; }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-card { position: static; }
}

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

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  box-shadow: var(--shadow-sm);
}
.contact-info-card h2 { font-size: 1.3rem; font-weight: 900; margin-bottom: 12px; }
.contact-info-card > p { color: var(--gray); font-size: 0.94rem; margin-bottom: 24px; }
.mail-box {
  background: var(--green-soft-2);
  border: 1px dashed var(--green);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  margin-bottom: 24px;
}
.mail-box .label { font-size: 0.8rem; font-weight: 900; color: var(--gray); letter-spacing: 0.08em; }
.mail-box a {
  display: block;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--green-darker);
  margin: 6px 0 14px;
  word-break: break-all;
}
.contact-list { list-style: none; }
.contact-list li {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--ink-2);
}
.contact-list li .ci {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--green-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  flex-shrink: 0;
}
.contact-list li b { display: block; font-size: 0.85rem; color: var(--ink); }
.contact-list li span { color: var(--gray); font-size: 0.84rem; }

.contact-form-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  box-shadow: var(--shadow-sm);
}
.contact-form-card h2 { font-size: 1.3rem; font-weight: 900; margin-bottom: 6px; }
.contact-form-card .cf-sub { color: var(--gray); font-size: 0.9rem; margin-bottom: 24px; }
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-weight: 800;
  font-size: 0.88rem;
  margin-bottom: 8px;
}
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(6, 199, 85, 0.15);
  background: #fff;
}
.form-row textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: 0.8rem; color: var(--gray-2); margin-top: 14px; }

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ---------------- Page header (inner pages) ---------------- */

.inner-hero {
  background:
    radial-gradient(800px 300px at 90% -20%, rgba(6, 199, 85, 0.16), transparent 60%),
    linear-gradient(180deg, #f0fbf5 0%, var(--bg) 100%);
  padding: 56px 0 44px;
  text-align: center;
}
.inner-hero .eyebrow {
  color: var(--green-dark);
  font-weight: 900;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.inner-hero h1 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); font-weight: 900; line-height: 1.5; }
.inner-hero p { color: var(--gray); max-width: 560px; margin: 14px auto 0; }

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

.site-footer {
  background: #10201a;
  color: #b9c9c1;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding: 56px 0 40px;
}
.footer-grid h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 900;
  margin-bottom: 16px;
}
.footer-brand .logo { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.8; max-width: 340px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: #b9c9c1; font-size: 0.9rem; }
.site-footer a:hover { color: var(--green); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  color: #7d948a;
}
@media (max-width: 800px) {
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
}

/* ---------------- Back to top ---------------- */

.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.2s;
  z-index: 90;
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { transform: translateY(-3px); }

/* ---------------- Misc ---------------- */

.divider-soft {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}