:root {
  --navy: #173554;
  --ink: #32485a;
  --muted: #6f7d88;
  --teal: #4db6ac;
  --teal-dark: #238f94;
  --orange: #ffb347;
  --green: #7cc576;
  --coral: #ff6f61;
  --sky: #5dade2;
  --warm: #fffaf3;
  --canvas: #f5f7fa;
  --white: #fff;
  --line: #e3e9e6;
  --shadow: 0 18px 48px rgba(47, 72, 81, .10);
  --container: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font: 16px/1.75 "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
img { display: block; max-width: 100%; }
button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 3px solid rgba(77, 182, 172, .32);
  outline-offset: 3px;
}
.content-container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
.content-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(227, 233, 230, .92);
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(16px);
}
.content-nav { min-height: 74px; display: flex; align-items: center; gap: 26px; }
.content-logo { width: 190px; flex: 0 0 auto; }
.content-logo img { width: 100%; }
.content-links { display: flex; align-items: center; gap: 24px; margin-left: auto; }
.content-links a { color: #526674; font-size: 14px; font-weight: 750; text-decoration: none; }
.content-links a:hover { color: var(--teal-dark); }
.content-action, .content-button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 14px;
  color: var(--white);
  background: var(--teal-dark);
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}
.content-button.secondary {
  border-color: #9ed4cf;
  color: var(--teal-dark);
  background: var(--white);
}
.content-button.quiet {
  border-color: var(--line);
  color: var(--ink);
  background: var(--white);
}
.content-hero { overflow: hidden; border-bottom: 1px solid #efe8df; background: var(--warm); }
.content-hero-grid {
  min-height: 440px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
  align-items: center;
  gap: 64px;
  padding-block: 72px;
}
.content-hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--navy);
  font-size: clamp(38px, 4vw, 58px);
  line-height: 1.16;
  letter-spacing: -.035em;
}
.content-hero p { max-width: 720px; margin: 22px 0 0; color: #526674; font-size: 19px; }
.hero-note {
  display: grid;
  gap: 12px;
  padding: 24px;
  border: 1px solid #d9eae5;
  border-radius: 24px;
  background: rgba(255,255,255,.78);
}
.hero-note strong { color: var(--navy); font-size: 18px; }
.hero-note span { color: #5d6c77; font-size: 14px; }
.hero-note svg { width: 34px; height: 34px; color: var(--teal-dark); }
.content-section { padding: 82px 0; }
.content-section.alt { background: var(--canvas); }
.section-head { max-width: 760px; margin-bottom: 34px; }
.section-head h2 { margin: 0; color: var(--navy); font-size: clamp(28px, 3vw, 42px); line-height: 1.25; }
.section-head p { margin: 14px 0 0; color: var(--muted); }
.privacy-strip, .boundary-box {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid #cde7e1;
  border-radius: 18px;
  color: #436271;
  background: #f2fbf8;
}
.privacy-strip svg, .boundary-box svg { width: 22px; height: 22px; flex: 0 0 auto; color: var(--teal-dark); }
.readiness-form { display: grid; gap: 18px; margin-top: 30px; }
.readiness-form fieldset {
  min-width: 0;
  margin: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(47,72,81,.05);
}
.readiness-form fieldset:focus-within { border-color: #9ed4cf; }
.readiness-form legend { padding: 0 8px; color: var(--navy); font-size: 19px; font-weight: 850; }
.question-copy { margin: 4px 0 16px; color: #526674; }
.choice-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.choice {
  position: relative;
  display: flex;
  min-height: 64px;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 15px;
  cursor: pointer;
}
.choice:has(input:checked) { border-color: var(--teal); color: var(--navy); background: #f2fbf8; }
.choice input { width: 18px; height: 18px; accent-color: var(--teal-dark); }
.form-actions, .result-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 10px; }
.form-status { min-height: 28px; margin: 0; color: #ba4f45; font-weight: 700; }
.readiness-result { margin-top: 42px; scroll-margin-top: 100px; }
.result-intro {
  padding: 26px;
  border-radius: 24px;
  color: var(--white);
  background: var(--navy);
}
.result-intro h2 { margin: 0; font-size: 30px; }
.result-intro p { margin: 10px 0 0; color: #dce8ef; }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 18px; }
.result-group { padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: var(--white); }
.result-group h3 { margin: 0; color: var(--navy); font-size: 20px; }
.result-group ul { margin: 14px 0 0; padding-left: 20px; }
.result-group li + li { margin-top: 10px; }
.result-group.maintain { border-top: 5px solid var(--green); }
.result-group.observe { border-top: 5px solid var(--orange); }
.result-group.start { border-top: 5px solid var(--coral); }
.sample-stack, .guide-stack { display: grid; gap: 26px; }
.sample-panel, .guide-article, .about-panel {
  min-width: 0;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--white);
  box-shadow: var(--shadow);
}
.sample-panel h2, .guide-article h2, .about-panel h2 { margin: 0; color: var(--navy); font-size: 28px; line-height: 1.3; }
.sample-label {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  color: #735325;
  background: #fff1d8;
  font-size: 13px;
  font-weight: 800;
}
.worksheet {
  width: min(100%, 720px);
  margin: 26px auto 0;
  padding: 34px;
  border: 1px solid #ccd5d2;
  color: #223c55;
  background: #fff;
  box-shadow: 0 16px 32px rgba(47,72,81,.10);
}
.worksheet-head { display: flex; justify-content: space-between; gap: 20px; border-bottom: 2px solid var(--teal); padding-bottom: 14px; }
.worksheet-head strong { font-size: 22px; }
.worksheet-task { margin-top: 24px; }
.worksheet-task h3 { margin: 0 0 10px; }
.dot-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 12px; }
.dot-row i { width: 22px; height: 22px; border-radius: 50%; background: var(--orange); }
.worksheet-stop { margin-top: 28px; padding: 12px; border-radius: 10px; background: #fff6e7; font-size: 14px; }
.plan-table { width: 100%; margin-top: 24px; border-collapse: collapse; }
.plan-table th, .plan-table td { padding: 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.plan-table th { color: var(--navy); background: #f3f7f6; }
.rhythm-grid, .review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 24px; }
.rhythm-card, .review-step {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fbfcfc;
}
.rhythm-card strong, .review-step strong { display: block; color: var(--navy); }
.rhythm-card span, .review-step span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; }
.explanation-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.explanation-grid article { padding: 22px; border-radius: 18px; background: var(--canvas); }
.explanation-grid h3 { margin: 0; color: var(--navy); font-size: 18px; }
.guide-index { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 26px; }
.guide-index a { padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; color: var(--navy); background: var(--white); font-weight: 750; text-decoration: none; }
.guide-index a:hover { border-color: var(--teal); }
.guide-article p { margin: 16px 0 0; }
.guide-action { margin-top: 20px; padding: 18px; border-left: 4px solid var(--teal); background: #f2fbf8; }
.guide-action strong { color: var(--navy); }
.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 28px; align-items: start; }
.operator-card { padding: 28px; border-radius: 24px; color: var(--white); background: var(--navy); }
.operator-card h2 { margin: 0; color: var(--white); }
.operator-card a { color: #bcece6; }
.about-list { margin: 18px 0 0; padding-left: 20px; }
.public-footer { padding: 42px 0; color: #dce8ef; background: var(--navy); }
.footer-layout { display: flex; align-items: center; gap: 26px; }
.footer-layout img { width: 168px; padding: 6px 10px; border-radius: 8px; background: var(--white); }
.footer-layout nav { display: flex; flex-wrap: wrap; gap: 18px; margin-left: auto; }
.footer-layout a { color: #dce8ef; font-size: 13px; text-decoration: none; }
[hidden] { display: none !important; }

@media (max-width: 900px) {
  .content-links { display: none; }
  .content-action { margin-left: auto; }
  .content-hero-grid, .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .content-hero-grid { min-height: 0; padding-block: 56px; }
  .hero-note { max-width: 520px; }
  .result-grid, .rhythm-grid, .review-grid, .explanation-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .content-container { width: min(100% - 28px, var(--container)); }
  .content-nav { min-height: 66px; gap: 12px; }
  .content-logo { width: 136px; }
  .content-action { min-height: 42px; padding: 0 13px; font-size: 13px; }
  .content-hero-grid { padding-block: 44px; }
  .content-hero h1 { font-size: 38px; }
  .content-hero p { font-size: 17px; }
  .content-section { padding: 58px 0; }
  .choice-row, .result-grid, .rhythm-grid, .review-grid, .explanation-grid, .guide-index { grid-template-columns: 1fr; }
  .readiness-form fieldset, .sample-panel, .guide-article, .about-panel { padding: 20px; border-radius: 20px; }
  .choice { min-height: 56px; }
  .plan-table { display: block; overflow-x: auto; white-space: nowrap; }
  .worksheet { padding: 22px; }
  .worksheet-head, .footer-layout { align-items: flex-start; flex-direction: column; }
  .footer-layout nav { margin-left: 0; }
}
@media print {
  .content-header, .public-footer, .form-actions, .result-actions, .content-action { display: none !important; }
  .content-section { padding: 20px 0; }
  .readiness-form { display: none; }
  .readiness-result { margin: 0; }
  .result-grid { grid-template-columns: 1fr; }
  body { color: #000; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}