:root {
  --paper: #f5faf6;
  --paper-2: #edf6f1;
  --surface: #ffffff;
  --ink: #123832;
  --ink-2: #385d55;
  --muted: #718980;
  --line: #d8e8e0;
  --brand: #075243;
  --brand-2: #16745f;
  --mint: #dff5ea;
  --mint-strong: #aaf0ce;
  --amber: #f0bc56;
  --amber-soft: #fff2d3;
  --blue: #d8ecfb;
  --blue-ink: #2b5f81;
  --coral: #cc6b59;
  --coral-soft: #ffe5df;
  --shadow: 0 18px 44px rgba(12, 61, 49, .11);
  --radius: 8px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
strong { font-weight: 780; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 250, 246, .92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.nav-inner {
  max-width: var(--max);
  min-height: 64px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--brand);
  color: var(--mint-strong);
  font-weight: 850;
}
.brand-name { font-size: 17px; font-weight: 800; line-height: 1.12; }
.brand-sub { color: var(--muted); font-size: 11px; line-height: 1.15; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--ink-2);
  font-size: 14px;
  white-space: nowrap;
}
.nav-links a { padding: 8px 0; border-bottom: 2px solid transparent; }
.nav-links a:hover,
.nav-links a.active {
  color: var(--brand);
  border-bottom-color: var(--amber);
}
.nav-cta {
  border: 0;
  border-radius: 999px;
  padding: 10px 18px;
  background: var(--brand);
  color: #f5fff8;
  font-weight: 800;
  white-space: nowrap;
}

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px 24px 112px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 44px;
  align-items: center;
}
.hero.compact {
  padding-top: 58px;
  padding-bottom: 88px;
  grid-template-columns: minmax(0, 1fr) 390px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 7px 12px;
  border: 1px solid #b7dfcf;
  border-radius: 999px;
  background: #effaf4;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
}
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 {
  margin: 20px 0 18px;
  font-size: clamp(38px, 5.8vw, 66px);
  line-height: 1.06;
  letter-spacing: 0;
}
.compact h1 { font-size: clamp(34px, 4.6vw, 54px); }
h1 .mark {
  color: var(--brand-2);
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-decoration-thickness: .18em;
  text-underline-offset: -.05em;
}
.lead {
  max-width: 650px;
  margin: 0 0 28px;
  color: var(--ink-2);
  font-size: 19px;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.btn-primary,
.btn-secondary {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 13px 22px;
  font-weight: 850;
}
.btn-primary {
  border: 0;
  background: var(--brand);
  color: #f5fff8;
  box-shadow: 0 10px 24px rgba(7, 82, 67, .18);
}
.btn-secondary {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--brand);
}
.proof {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
}
.proof span {
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .78);
  border: 1px solid var(--line);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.panel-top {
  padding: 20px;
  background: linear-gradient(135deg, #0c5b4b, #16745f);
  color: #f4fff8;
}
.panel-kicker {
  color: #bdeed7;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .08em;
}
.panel-title {
  margin-top: 6px;
  font-size: 26px;
  font-weight: 850;
  line-height: 1.2;
}
.panel-note {
  margin-top: 8px;
  color: rgba(255, 255, 255, .78);
  font-size: 13px;
}
.panel-body { padding: 18px 20px 20px; }

.risk-map {
  display: grid;
  gap: 11px;
}
.risk-row {
  display: grid;
  grid-template-columns: 76px 1fr auto;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}
.bar {
  height: 8px;
  border-radius: 999px;
  background: #edf4f1;
  overflow: hidden;
}
.bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--brand-2);
}
.risk-row.high i { background: var(--coral); }
.risk-row.mid i { background: var(--amber); }

.todo-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}
.todo {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  padding: 12px;
  border-radius: var(--radius);
  background: #f8fbf9;
  border: 1px solid #e2eee8;
}
.todo-num {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--mint);
  color: var(--brand);
  font-size: 13px;
  font-weight: 850;
}
.todo strong {
  display: block;
  line-height: 1.35;
  font-size: 14px;
}
.todo span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.band {
  background: var(--surface);
  border-top: 1px solid var(--line);
}
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 70px 24px;
}
.section-head {
  max-width: 720px;
  margin-bottom: 30px;
}
.section-label {
  color: var(--brand-2);
  font-size: 13px;
  font-weight: 850;
}
h2 {
  margin: 8px 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.15;
}
.section-head p,
.section > p { color: var(--ink-2); }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdfb;
}
.card h3 {
  margin: 0 0 7px;
  font-size: 17px;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.care-hero .mark {
  color: var(--brand-2);
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-decoration-thickness: .18em;
  text-underline-offset: -.05em;
}
.care-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.scene-selector h2 {
  margin: 0 0 6px;
  font-size: 26px;
  line-height: 1.2;
}
.scene-selector p {
  margin: 0 0 18px;
  color: var(--muted);
}
.scene-list {
  display: grid;
  gap: 12px;
}
.scene-card {
  width: 100%;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdfb;
  padding: 14px;
  color: var(--ink);
  text-align: left;
}
.scene-card.active,
.scene-card:hover {
  background: #f1fbf5;
  border-color: #9ed8c2;
}
.scene-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--brand-2);
  color: #fff;
  font-weight: 900;
}
.scene-card strong {
  display: block;
  margin-bottom: 2px;
}
.scene-card small {
  display: block;
  color: var(--muted);
  line-height: 1.45;
}
.scene-card em {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--brand);
  font-style: normal;
  font-size: 12px;
  font-weight: 850;
}
.split-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 22px;
}
.split-head p {
  max-width: 520px;
  margin: 0;
}
.care-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.info-panel {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.green-panel {
  background: #f1fbf5;
  border-color: #c8e8dc;
}
.amber-panel {
  background: var(--amber-soft);
  border-color: #efd28c;
}
.info-panel h3,
.video-panel h3 {
  margin: 0 0 12px;
}
.care-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.care-list li {
  display: grid;
  grid-template-columns: 25px minmax(0, 1fr);
  gap: 10px;
}
.care-list li span:first-child {
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--brand-2);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  margin-top: 1px;
}
.amber-panel .care-list li span:first-child {
  background: var(--amber);
  color: #4b390f;
}
.care-list p {
  margin: 0;
  color: var(--ink-2);
}
.video-section {
  padding-top: 0;
}
.video-panel {
  padding: 22px;
  border: 1px solid #cfe2f7;
  border-radius: var(--radius);
  background: var(--blue);
}
.video-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.video-card {
  padding: 12px;
  border: 1px solid rgba(46, 138, 207, .18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .78);
}
.video-frame {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 0;
  border-radius: var(--radius);
  background: #d9ebe7;
  margin-bottom: 10px;
}
.video-card strong {
  display: block;
  font-size: 15px;
  margin-bottom: 3px;
}
.video-card span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}
.video-card a {
  display: inline-flex;
  margin-top: 8px;
  color: var(--brand-2);
  font-size: 13px;
  font-weight: 850;
}
.notice-panel {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfffe;
  color: var(--ink-2);
  font-size: 14px;
}
.tile {
  min-height: 168px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdfb;
  text-align: left;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.tile:hover,
.tile.active {
  transform: translateY(-2px);
  border-color: #9ed8c2;
  background: #f1fbf5;
}
.tile-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--mint);
  color: var(--brand);
  font-weight: 900;
  margin-bottom: 12px;
}
.tile.risk .tile-mark { background: var(--amber-soft); color: #805509; }
.tile.med .tile-mark { background: var(--blue); color: var(--blue-ink); }
.tile.coral .tile-mark { background: var(--coral-soft); color: #8d3f32; }
.tile h3 { margin: 0 0 6px; font-size: 17px; }
.tile p { margin: 0; color: var(--muted); font-size: 14px; }

.stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 18px;
}
.stat {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdfb;
}
.stat-value {
  display: block;
  color: var(--brand);
  font-size: 24px;
  font-weight: 880;
  line-height: 1.1;
}
.stat-label {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.check-shell {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 18px;
  align-items: start;
}
.progress-panel {
  position: sticky;
  top: 84px;
}
.meter {
  margin: 14px 0;
  height: 10px;
  border-radius: 999px;
  background: #eaf2ee;
  overflow: hidden;
}
.meter-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--brand-2), var(--mint-strong));
  transition: width .18s ease;
}
.category-list {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}
.category-link {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-2);
  background: #fbfdfb;
  font-size: 14px;
}
.check-section {
  display: grid;
  gap: 14px;
}
.check-group {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.check-group + .check-group { margin-top: 14px; }
.check-group-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}
.check-group h3 { margin: 0; }
.group-note { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.badge {
  height: fit-content;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--mint);
  color: var(--brand);
  font-size: 12px;
  font-weight: 850;
  white-space: nowrap;
}
.badge.amber { background: var(--amber-soft); color: #805509; }
.badge.blue { background: var(--blue); color: var(--blue-ink); }
.badge.coral { background: var(--coral-soft); color: #8d3f32; }
.check-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid #edf3f0;
}
.check-item:first-of-type { border-top: 0; }
.check-item input {
  width: 22px;
  height: 22px;
  margin-top: 3px;
  accent-color: var(--brand);
}
.check-item strong {
  display: block;
  line-height: 1.4;
}
.check-item span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
}

.quiz-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 18px;
  align-items: start;
}
.quiz-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.quiz-question {
  margin: 0 0 14px;
  font-size: 22px;
  line-height: 1.3;
}
.option-list {
  display: grid;
  gap: 10px;
}
.option {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdfb;
  color: var(--ink);
  text-align: left;
}
.option:hover,
.option.selected {
  border-color: #9ed8c2;
  background: #f1fbf5;
}
.option small {
  color: var(--muted);
  display: block;
  margin-top: 2px;
}
.risk-summary {
  display: grid;
  gap: 12px;
}
.summary-card {
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fbfdfb;
}
.summary-card strong { display: block; }
.summary-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 3px;
}

.bottom-cta {
  padding: 42px 24px 92px;
  background: var(--brand);
  color: #f3fff7;
  text-align: center;
}
.bottom-cta h2 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 44px);
}
.bottom-cta p {
  max-width: 620px;
  margin: 0 auto 20px;
  color: rgba(255, 255, 255, .74);
}
.bottom-cta .btn-primary {
  background: var(--mint-strong);
  color: var(--brand);
  box-shadow: none;
}

.sticky {
  position: sticky;
  bottom: 0;
  z-index: 35;
  background: rgba(7, 82, 67, .96);
  color: #f3fff7;
  border-top: 1px solid rgba(255, 255, 255, .12);
  backdrop-filter: blur(18px);
}
.sticky-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.sticky-copy { color: rgba(255, 255, 255, .74); font-size: 14px; }
.sticky-copy strong { color: #fff; }
.sticky .btn-primary {
  min-height: 42px;
  padding: 9px 17px;
  background: var(--mint-strong);
  color: var(--brand);
  box-shadow: none;
  white-space: nowrap;
}
.toast {
  position: fixed;
  right: 22px;
  bottom: 78px;
  z-index: 60;
  max-width: 330px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  color: var(--ink-2);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 920px) {
  .nav-inner { padding: 10px 18px; min-height: 58px; }
  .nav-links { display: none; }
  .brand-sub { display: none; }
  .hero,
  .hero.compact {
    padding: 42px 18px 34px;
    padding-bottom: 98px;
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .lead { font-size: 17px; }
  .actions { flex-direction: column; align-items: stretch; }
  .btn-primary,
  .btn-secondary { width: 100%; }
  .grid-3,
  .grid-2,
  .care-grid,
  .video-list,
  .check-shell,
  .quiz-layout {
    grid-template-columns: 1fr;
  }
  .split-head { display: block; }
  .split-head p { margin-top: 8px; }
  .scene-card { grid-template-columns: 42px minmax(0, 1fr); }
  .scene-card em { display: none; }
  .progress-panel { position: static; }
  .section { padding: 54px 18px; }
}

@media (max-width: 560px) {
  .nav-cta { padding: 9px 12px; font-size: 13px; }
  h1 { font-size: 38px; }
  .risk-row { grid-template-columns: 68px 1fr 40px; }
  .stat-strip { grid-template-columns: 1fr; }
  .sticky-inner { padding: 10px 14px; }
  .sticky-copy { display: none; }
  .sticky .btn-primary { width: 100%; }
  .toast { left: 14px; right: 14px; bottom: 76px; }
}