:root {
  --ink: #111013;
  --ink-soft: #2e2831;
  --pink: #ff4f9a;
  --cream: #f4ecd9;
  --cream-deep: #e7dac1;
  --paper: #fffaf0;
  --line: #312b34;
  --muted: #6f6670;
  --shadow: 7px 7px 0 var(--ink);
  --radius: 3px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 2px; text-underline-offset: 4px; }
button, input { font: inherit; }
.shell { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.skip-link {
  position: fixed; top: 8px; left: 8px; z-index: 100;
  transform: translateY(-160%); background: var(--pink); color: var(--ink);
  padding: 8px 14px; font-weight: 800;
}
.skip-link:focus { transform: translateY(0); }
.site-header {
  position: relative; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 16px max(24px, calc((100vw - 1160px) / 2));
  color: var(--cream); background: var(--ink); border-bottom: 4px solid var(--pink);
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px;
  color: var(--ink); background: var(--pink); border: 2px solid var(--cream);
  font-weight: 950; transform: rotate(-3deg);
}
.brand b { display: block; font-size: 1.05rem; letter-spacing: .08em; }
.brand small { display: block; color: #c9bdc7; font-size: .7rem; letter-spacing: .04em; }
.main-nav { display: flex; align-items: center; gap: 21px; font-size: .88rem; font-weight: 750; }
.main-nav a { text-decoration: none; }
.main-nav a:hover, .main-nav a:focus-visible { color: var(--pink); }
.nav-toggle {
  display: none; color: var(--cream); background: transparent;
  border: 2px solid var(--cream); padding: 6px 10px; font-weight: 800;
}
.hero {
  display: grid; grid-template-columns: 1.03fr .97fr; gap: 56px; align-items: center;
  min-height: 650px; padding-block: 72px;
}
.issue-label, .eyebrow {
  display: inline-block; font-size: .76rem; font-weight: 900; letter-spacing: .14em;
  text-transform: uppercase;
}
.issue-label { padding: 6px 10px; color: var(--cream); background: var(--ink); }
.hero h1, .page-hero h1, .article-header h1, .tool-hero h1, .profile-hero h1 {
  margin: 18px 0; max-width: 900px; font-size: clamp(2.7rem, 7vw, 6.8rem);
  line-height: .98; letter-spacing: -.06em;
}
.hero h1 { font-size: clamp(3.15rem, 6.7vw, 6.7rem); }
.hero-lead, .page-hero > p, .tool-hero > p, .article-deck {
  max-width: 720px; margin: 0; color: var(--ink-soft); font-size: 1.12rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 9px 18px; border: 3px solid var(--ink);
  text-decoration: none; font-weight: 900; cursor: pointer;
}
.button.primary { background: var(--pink); box-shadow: 5px 5px 0 var(--ink); }
.button.secondary { background: var(--cream); }
.button:hover, .button:focus-visible { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ink); }
.hero-art { margin: 0; transform: rotate(1.4deg); }
.hero-art img { border: 4px solid var(--ink); box-shadow: 12px 12px 0 var(--pink); }
.hero-art figcaption { margin-top: 15px; color: var(--muted); font-size: .78rem; }
.trust-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-block: 4px solid var(--ink); background: var(--pink);
}
.trust-strip div { padding: 22px 24px; text-align: center; border-right: 2px solid var(--ink); }
.trust-strip div:last-child { border-right: 0; }
.trust-strip strong { display: block; font-size: 2rem; line-height: 1; }
.trust-strip span { display: block; margin-top: 6px; font-size: .76rem; font-weight: 850; letter-spacing: .04em; }
.section-block { padding-block: 88px; }
.section-heading { max-width: 680px; margin-bottom: 35px; }
.section-heading h2, .science-copy h2, .safety-note h2, .channel-note h2, .policy-section h2 {
  margin: 8px 0 10px; font-size: clamp(1.9rem, 4vw, 3.5rem); line-height: 1.08; letter-spacing: -.04em;
}
.section-heading p { margin: 0; color: var(--muted); }
.panel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.panel-card {
  position: relative; min-height: 280px; padding: 25px;
  border: 3px solid var(--ink); background: var(--paper); box-shadow: var(--shadow);
}
.panel-card:nth-child(3n + 2) { transform: translateY(12px); background: #ffe2ed; }
.panel-card:nth-child(3n) { background: var(--cream-deep); }
.panel-card h3 { margin: 12px 0; font-size: 1.3rem; line-height: 1.35; }
.panel-card p { color: var(--ink-soft); font-size: .94rem; }
.text-link { font-weight: 900; text-decoration-color: var(--pink); }
.ink-section { color: var(--cream); background: var(--ink); border-block: 5px solid var(--pink); }
.split-feature { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; padding-block: 80px; }
.split-feature h2 { margin: 9px 0 18px; font-size: clamp(2.1rem, 4vw, 4rem); line-height: 1.05; }
.pink { color: var(--pink); }
.number-list { margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.number-list li {
  display: grid; grid-template-columns: 130px 1fr; gap: 20px;
  padding: 20px 0; border-bottom: 1px solid #5e535f;
}
.number-list li:first-child { border-top: 1px solid #5e535f; }
.number-list b { color: var(--pink); font-size: 1.15rem; }
.science-grid {
  display: grid; grid-template-columns: 1.3fr .7fr; gap: 50px;
  padding-block: 90px; border-top: 3px solid var(--ink);
}
.science-copy { max-width: 760px; }
.safety-note { padding: 30px; background: var(--pink); border: 4px solid var(--ink); box-shadow: var(--shadow); }
.safety-note h2 { font-size: 2rem; }
.faq-section { padding-block: 90px; color: var(--cream); background: var(--ink-soft); }
.faq-layout { display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; }
.faq-list details { padding: 20px 0; border-top: 1px solid #706574; }
.faq-list details:last-child { border-bottom: 1px solid #706574; }
.faq-list summary { color: var(--pink); font-weight: 900; cursor: pointer; }
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.quote-grid blockquote { margin: 0; padding: 25px; border: 3px solid var(--ink); background: var(--paper); }
.quote-grid blockquote:nth-child(2) { background: #ffe2ed; }
.quote-grid cite { color: var(--muted); font-size: .8rem; font-style: normal; }
.page-hero, .tool-hero {
  padding-block: 95px 65px; border-bottom: 3px solid var(--ink);
}
.page-hero h1, .tool-hero h1 { font-size: clamp(3.2rem, 8vw, 7.5rem); }
.channel-note { margin-bottom: 90px; padding: 30px; border: 3px solid var(--ink); background: var(--pink); }
.channel-note h2 { font-size: 2rem; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 34px; color: var(--muted); font-size: .83rem; }
.article-layout { padding-block: 45px 100px; }
.article-header { max-width: 930px; padding-bottom: 45px; border-bottom: 3px solid var(--ink); }
.article-header h1 { font-size: clamp(2.4rem, 5.7vw, 5.8rem); }
.article-meta, .tag-row { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 22px; font-size: .82rem; }
.tag {
  padding: 4px 9px; background: #ffe2ed; border: 1px solid var(--ink);
  text-decoration: none; font-weight: 800;
}
.article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 70px; margin-top: 50px; }
.article-content { max-width: 760px; }
.lead-paragraph { font-size: 1.22rem; font-weight: 600; }
.article-content section { margin-top: 45px; }
.article-content h2, .article-aside h2, .tool-note h2 {
  margin: 0 0 12px; font-size: 1.75rem; line-height: 1.2; letter-spacing: -.025em;
}
.article-content p { color: #2d2830; }
.article-aside { align-self: start; position: sticky; top: 20px; }
.article-aside img { border: 3px solid var(--ink); }
.aside-card { padding: 22px; color: var(--cream); background: var(--ink); }
.howto-box, .takeaway-box { padding: 25px 30px; border: 3px solid var(--ink); background: #ffe2ed; box-shadow: var(--shadow); }
.howto-box ol, .takeaway-box ul { padding-left: 22px; }
.tag-index-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.tag-index-card { position: relative; padding: 24px; min-height: 185px; border: 3px solid var(--ink); background: var(--paper); }
.tag-index-card h2 { margin: 8px 0; font-size: 1.35rem; }
.tag-count { color: var(--pink); font-size: 1.55rem; font-weight: 950; }
.back-link { margin-top: 55px; font-weight: 900; }
.editor-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.editor-card { display: grid; grid-template-columns: 84px 1fr; gap: 20px; padding: 25px; border: 3px solid var(--ink); background: var(--paper); }
.editor-card h2 { margin: 0; }
.editor-initial {
  display: grid; place-items: center; width: 78px; height: 78px;
  color: var(--cream); background: var(--ink); border: 4px solid var(--pink);
  font-size: 2rem; font-weight: 950;
}
.editor-initial.large { width: 140px; height: 140px; font-size: 4rem; box-shadow: 8px 8px 0 var(--pink); }
.role { color: #a42962; font-weight: 850; }
.profile-hero { display: grid; grid-template-columns: 160px 1fr; gap: 40px; align-items: center; padding-block: 85px 60px; border-bottom: 3px solid var(--ink); }
.profile-hero h1 { font-size: clamp(3rem, 7vw, 6rem); }
.tool-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 45px; padding-block: 70px 100px; }
.checklist-card { padding: 30px; border: 4px solid var(--ink); background: var(--paper); box-shadow: var(--shadow); }
.checklist-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.checklist-head h2 { margin: 0; font-size: 2rem; }
.progress-track { height: 12px; margin: 20px 0; border: 2px solid var(--ink); background: var(--cream); }
.progress-track span { display: block; height: 100%; background: var(--pink); transition: width .2s ease; }
.check-row { display: block; cursor: pointer; }
.check-row input { position: absolute; opacity: 0; }
.check-row span { display: grid; grid-template-columns: 45px 1fr; gap: 15px; padding: 17px 0; border-top: 1px solid #bdb1a1; }
.check-row b { color: var(--pink); }
.check-row input:checked + span { text-decoration: line-through; color: var(--muted); }
.check-row input:focus-visible + span { outline: 3px solid var(--pink); outline-offset: 3px; }
.reset-checks { margin-top: 24px; }
.tool-note { align-self: start; padding: 28px; color: var(--cream); background: var(--ink); }
.tool-note h2 { color: var(--pink); }
.policy-layout { max-width: 840px; padding-block: 35px 100px; }
.policy-section { padding: 32px 0; border-bottom: 2px solid var(--ink); }
.policy-section h2 { font-size: 2rem; }
.error-page { min-height: 680px; padding-block: 85px; }
.error-code { display: block; color: var(--pink); font-size: clamp(7rem, 20vw, 16rem); font-weight: 950; line-height: .78; }
.error-page > h1 { margin: 30px 0 10px; font-size: clamp(2.4rem, 6vw, 5rem); }
.error-page > p { max-width: 650px; font-size: 1.1rem; }
.error-help { max-width: 700px; margin-top: 70px; padding: 25px; border: 3px solid var(--ink); background: var(--paper); }
.error-help h2 { margin-top: 0; }
.site-footer {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
  padding: 55px max(24px, calc((100vw - 1160px) / 2)) 30px;
  color: var(--cream); background: var(--ink); border-top: 5px solid var(--pink);
}
.footer-brand { color: var(--pink); font-size: 1.5rem; font-weight: 950; text-decoration: none; }
.site-footer nav { display: flex; flex-wrap: wrap; align-content: start; gap: 10px 20px; }
.site-footer nav a { color: var(--cream); font-size: .85rem; }
.status-line { grid-column: 1 / -1; padding-top: 25px; color: #a99da8; border-top: 1px solid #4f4651; font-size: .78rem; }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    padding: 20px; background: var(--ink); border-bottom: 4px solid var(--pink);
  }
  .main-nav.open { display: grid; grid-template-columns: 1fr 1fr; }
  .hero, .split-feature, .science-grid, .faq-layout, .tool-layout { grid-template-columns: 1fr; }
  .hero { gap: 35px; padding-block: 55px; }
  .trust-strip { grid-template-columns: 1fr 1fr; }
  .trust-strip div:nth-child(2) { border-right: 0; }
  .trust-strip div:nth-child(-n + 2) { border-bottom: 2px solid var(--ink); }
  .panel-grid, .quote-grid, .tag-index-grid { grid-template-columns: 1fr 1fr; }
  .article-grid { grid-template-columns: 1fr; }
  .article-aside { position: static; display: grid; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 28px, 1160px); }
  .site-header { padding: 13px 14px; }
  .brand small { display: none; }
  .main-nav.open { grid-template-columns: 1fr; }
  .panel-grid, .quote-grid, .tag-index-grid, .editor-grid, .site-footer { grid-template-columns: 1fr; }
  .panel-card:nth-child(3n + 2) { transform: none; }
  .trust-strip strong { font-size: 1.55rem; }
  .trust-strip span { font-size: .68rem; }
  .profile-hero { grid-template-columns: 1fr; }
  .article-aside { grid-template-columns: 1fr; }
  .number-list li { grid-template-columns: 1fr; gap: 3px; }
  .site-footer .status-line { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}