:root {
  --bg: #f5f8f6;
  --bg-soft: #eef4f1;
  --surface: #ffffff;
  --brand-900: #08362c;
  --brand-800: #0e4c3f;
  --brand-700: #0f5f4d;
  --brand-500: #1a7a64;
  --mint: #d7efe5;
  --line: #d3e2db;
  --text: #1a2d27;
  --text-soft: #51645f;
  --alert: #dc5f2c;
  --shadow: 0 18px 50px rgba(10, 57, 45, 0.09);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Public Sans", sans-serif;
  line-height: 1.5;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: "Sora", sans-serif;
  line-height: 1.2;
}

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

.skip-link {
  position: absolute;
  left: -1000px;
  top: -1000px;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 1000;
  background: #fff;
  border: 2px solid var(--brand-700);
  border-radius: 10px;
  padding: 8px 12px;
}

.container {
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
}

.top-ribbon {
  background: var(--brand-800);
  color: #d7f6eb;
  font-size: 0.87rem;
}

.top-ribbon__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.4rem 0;
}

.top-ribbon p {
  margin: 0;
}

.lang-switch {
  display: inline-flex;
  gap: 0.35rem;
}

.lang-switch__btn {
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  color: #dff4ec;
  border-radius: 8px;
  padding: 0.25rem 0.5rem;
  font: inherit;
  cursor: pointer;
}

.lang-switch__btn.is-active {
  background: rgba(255, 255, 255, 0.14);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 248, 246, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.site-header__inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.brand__mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-content: center;
  background: linear-gradient(160deg, #1f8d75, #0d5747);
  color: #fff;
  font-family: "Sora", sans-serif;
  font-weight: 800;
}

.brand__text {
  font-family: "Sora", sans-serif;
  font-size: 1.08rem;
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--brand-700);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: #27594e;
  margin: 4px auto;
}

.sos-btn {
  background: var(--alert);
  color: #fff;
  border-radius: 12px;
  padding: 0.7rem 1rem;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(220, 95, 44, 0.3);
}

.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 85% 25%, rgba(80, 187, 153, 0.2), transparent 45%),
    radial-gradient(circle at 84% 30%, rgba(17, 105, 86, 0.35), transparent 60%),
    linear-gradient(140deg, var(--brand-900), var(--brand-700));
  color: #e8faf3;
}

.hero::before {
  content: "";
  position: absolute;
  width: 480px;
  aspect-ratio: 1;
  right: -100px;
  top: 40px;
  border-radius: 50%;
  border: 1px solid rgba(182, 244, 220, 0.2);
}

.hero::after {
  content: "";
  position: absolute;
  width: 320px;
  aspect-ratio: 1;
  right: 30px;
  top: 120px;
  border-radius: 50%;
  border: 1px solid rgba(182, 244, 220, 0.18);
}

.hero__content {
  position: relative;
  padding: 4.4rem 0 3rem;
}

.chip {
  display: inline-flex;
  background: rgba(234, 255, 246, 0.12);
  border: 1px solid rgba(220, 255, 241, 0.2);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font-size: 0.83rem;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  margin-top: 1rem;
  letter-spacing: -0.025em;
}

.hero p {
  margin-top: 1rem;
  max-width: 720px;
  color: #ccf0e2;
}

.hero__actions {
  margin-top: 1.65rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  border: 0;
  border-radius: 12px;
  padding: 0.82rem 1.05rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

.btn--primary {
  background: linear-gradient(150deg, #25a786, #1c7f68);
  color: #fff;
  box-shadow: 0 10px 24px rgba(17, 111, 89, 0.35);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.06);
  color: #f6fffb;
  border: 1px solid rgba(215, 245, 232, 0.24);
}

.btn--alert {
  background: var(--alert);
  color: #fff;
}

.hero__stats {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.hero__stats li {
  border: 1px solid rgba(209, 255, 236, 0.22);
  background: rgba(12, 80, 65, 0.5);
  border-radius: 14px;
  padding: 0.9rem;
  display: grid;
  gap: 0.2rem;
}

.hero__stats strong {
  font-size: 1.2rem;
}

.hero__stats span {
  font-size: 0.82rem;
  color: #b8ecd8;
}

.alert-strip {
  background: #fef4ee;
  border-bottom: 1px solid #f2ccb7;
}

.alert-strip__inner {
  padding: 0.8rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.alert-strip p {
  margin: 0;
  color: #8f3b17;
}

.section {
  padding: 4.3rem 0;
}

.section--soft {
  background: var(--bg-soft);
}

.section-head {
  margin-bottom: 1.5rem;
}

.section-kicker {
  display: inline-block;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--brand-500);
  margin-bottom: 0.4rem;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
}

.tool-cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.1rem;
  box-shadow: var(--shadow);
}

.card__icon {
  margin: 0;
  font-size: 1.3rem;
}

.card h3 {
  margin-top: 0.4rem;
  font-size: 1.05rem;
}

.card p {
  color: var(--text-soft);
  margin-top: 0.45rem;
}

.text-link {
  color: var(--brand-700);
  font-weight: 600;
}

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

.support-panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.chat-window {
  margin-top: 0.8rem;
  min-height: 230px;
  max-height: 350px;
  overflow-y: auto;
  background: #eff8f3;
  border: 1px solid #cde3d8;
  border-radius: 14px;
  padding: 0.8rem;
  display: grid;
  gap: 0.6rem;
}

.chat-row {
  max-width: 90%;
  padding: 0.65rem 0.75rem;
  border-radius: 12px;
  font-size: 0.94rem;
}

.chat-row--bot {
  background: #d8efe5;
}

.chat-row--user {
  margin-left: auto;
  background: #d4e5ff;
}

.chat-form {
  margin-top: 0.7rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
}

.chat-form input,
.filter-form input,
.filter-form select,
.lab-card select,
.lab-card input {
  border: 1px solid #c9dbd3;
  border-radius: 11px;
  padding: 0.72rem 0.75rem;
  font: inherit;
}

.panel-note {
  margin-top: 0.7rem;
  color: var(--text-soft);
  font-size: 0.85rem;
}

.filter-form {
  margin-top: 0.7rem;
  display: grid;
  grid-template-columns: 1fr minmax(160px, 220px);
  gap: 0.6rem;
}

.center-list {
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.center-list li {
  border: 1px solid #d9e8e1;
  background: #f8fcfa;
  border-radius: 12px;
  padding: 0.8rem;
}

.center-list h3 {
  font-size: 1rem;
}

.center-meta {
  margin-top: 0.35rem;
  font-size: 0.87rem;
  color: var(--text-soft);
}

.tools-lab {
  background:
    linear-gradient(180deg, #f7fbf8, #f3f7f5),
    repeating-linear-gradient(
      90deg,
      rgba(24, 130, 107, 0.04),
      rgba(24, 130, 107, 0.04) 1px,
      transparent 1px,
      transparent 28px
    );
}

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

.lab-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.lab-card h3 {
  font-size: 1.06rem;
}

.lab-card p {
  color: var(--text-soft);
  margin-top: 0.45rem;
}

.lab-card form {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.6rem;
}

.question {
  display: grid;
  gap: 0.3rem;
}

.question label {
  font-size: 0.9rem;
}

.result-box {
  min-height: 44px;
  border-radius: 12px;
  padding: 0.7rem;
  margin-top: 0.8rem;
  font-weight: 600;
  background: #eef6f2;
  color: #19483d;
}

.category-grid,
.path-grid,
.article-grid,
.quote-grid {
  display: grid;
  gap: 0.9rem;
}

.category-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.category-card,
.path-card,
.article-card,
.quote-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.category-card p,
.path-card p,
.article-card p {
  margin: 0.45rem 0 0;
  color: var(--text-soft);
}

.path-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.article-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.article-tag {
  display: inline-block;
  background: #e9f5ee;
  color: #1c705b;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
}

.article-card h3 {
  margin-top: 0.5rem;
  font-size: 1.1rem;
}

.quote-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quote-card {
  margin: 0;
  font-style: italic;
}

.site-footer {
  background: linear-gradient(160deg, #0a3e32, #0d5a49);
  color: #daf3ea;
  padding: 3rem 0 1.1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 1.1rem;
}

.footer-grid h4 {
  margin-bottom: 0.5rem;
}

.footer-grid a {
  display: block;
  margin: 0.35rem 0;
  color: #b6dece;
}

.copyright {
  margin: 1.4rem 0 0;
  border-top: 1px solid rgba(189, 242, 223, 0.2);
  padding-top: 0.85rem;
  text-align: center;
  color: #b3d5ca;
  font-size: 0.86rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .tool-cards,
  .path-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 900px) {
  .main-nav {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: #f8fcfa;
    border-bottom: 1px solid var(--line);
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.8rem 1rem 1rem;
    gap: 0.65rem;
  }

  .main-nav.is-open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .sos-btn {
    display: none;
  }

  .hero__stats,
  .category-grid,
  .article-grid,
  .quote-grid,
  .support-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .top-ribbon__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__content {
    padding-top: 3rem;
  }

  .tool-cards,
  .path-grid {
    grid-template-columns: 1fr;
  }

  .filter-form,
  .chat-form,
  .alert-strip__inner {
    grid-template-columns: 1fr;
    display: grid;
  }
}