/* roulang page: index */
:root {
  --ink: #1C1915;
  --paper: #F7F3EA;
  --sand: #EFE6D6;
  --line: #E2D5C0;
  --text: #2A241C;
  --muted: #6E6458;
  --on-dark: #F6F1E7;
  --brand: #C9842A;
  --brand-deep: #8A5A16;
  --persimmon: #7A4636;
  --shadow: 0 8px 24px rgba(28,25,21,.08);
  --radius: 12px;
  --radius-input: 8px;
  --max: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 16.5px;
  line-height: 1.8;
}
img { max-width: 100%; display: block; object-fit: cover; }
a { color: var(--brand-deep); text-underline-offset: 3px; }
a:hover { color: #6d4710; }
button, input, textarea { font: inherit; color: inherit; }
h1, h2, h3, p { margin-top: 0; }
p { margin-bottom: 0.85em; }
h1 { font-size: 40px; line-height: 1.25; font-weight: 700; margin-bottom: 16px; }
h2 { font-size: 28px; line-height: 1.35; font-weight: 700; margin-bottom: 12px; }
h3 { font-size: 20px; line-height: 1.4; font-weight: 700; margin-bottom: 8px; }
ul { margin: 0; padding: 0; list-style: none; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
main > section { padding: 72px 0; scroll-margin-top: 16px; }
main > section.hero { padding: 0; }
.badge-strip, .partners { padding: 32px 0; }
.sec-lead { max-width: 46em; margin-bottom: 28px; }
.sec-head { margin-bottom: 8px; }
.kicker { font-size: 13px; color: var(--brand-deep); font-weight: 600; margin: 0 0 8px; }

.site-header { background: var(--ink); color: var(--on-dark); }
.nav {
  min-height: 72px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "logo links cta";
  align-items: center;
  gap: 12px 20px;
}
.logo {
  grid-area: logo;
  color: var(--on-dark);
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
}
.logo:hover { color: var(--brand); }
.nav-links {
  grid-area: links;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  color: var(--on-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--brand); }
.nav-cta { grid-area: cta; }
.nav-check {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.nav-toggle {
  display: none;
  grid-area: toggle;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(246,241,231,.35);
  border-radius: 8px;
  color: var(--on-dark);
  cursor: pointer;
  padding: 0 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease, border-color .2s ease, color .2s ease;
}
.btn-solid { background: var(--brand); color: var(--ink); }
.btn-solid:hover { background: #B97526; color: var(--ink); transform: translateY(-1px); }
.btn-solid:active { transform: none; background: #A86820; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--brand-deep); }
.btn-ghost:hover { background: rgba(201,132,42,.16); color: var(--ink); transform: translateY(-1px); }
.btn-ghost:active { transform: none; }
.btn:focus-visible, .nav-toggle:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.btn:disabled { opacity: .65; cursor: default; transform: none; }

.hero { position: relative; background: var(--ink); overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 66%;
  background: var(--brand);
  clip-path: polygon(0 0, 86% 0, 100% 100%, 0 100%);
  z-index: 0;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 36px;
  align-items: center;
  padding: 72px 0;
}
.hero-brand { margin: 0 0 12px; font-size: 18px; font-weight: 700; color: var(--ink); }
.hero-copy h1, .hero-copy .lede { color: var(--ink); }
.lede { font-size: 16.5px; max-width: 38em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.spec-board {
  background: var(--paper);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 22px 8px;
}
.spec-board h2 { font-size: 20px; }
.spec-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 10px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.spec-k { font-weight: 700; }
.spec-v { font-weight: 700; display: block; }
.spec-n { display: block; color: var(--muted); font-size: 13px; }

.badge-strip { background: var(--sand); }
.badges { display: flex; gap: 12px; }
.badge {
  flex: 1;
  text-align: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
}
.badge i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--persimmon);
  display: inline-block;
}

.matrix {
  display: grid;
  grid-template-columns: 1.25fr .85fr 1fr;
  grid-template-areas: "spec spec thick" "color length length";
  gap: 16px;
}
.m1 { grid-area: spec; }
.m2 { grid-area: thick; }
.m3 { grid-area: color; }
.m4 { grid-area: length; }
.m-card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  color: inherit;
  text-decoration: none;
  box-shadow: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.m-card:hover { border-color: var(--brand); box-shadow: var(--shadow); color: inherit; }
.m-wide { border-left: 4px solid var(--brand); }
.m-narrow { background: var(--sand); }
.tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--persimmon);
  margin-bottom: 8px;
}
.card-more { font-weight: 700; color: var(--brand-deep); text-decoration: underline; text-underline-offset: 3px; }

.stats { background: var(--sand); }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.num { margin: 0; font-size: 40px; line-height: 1.1; font-weight: 700; color: var(--brand-deep); }
.stat-label { margin: 8px 0; font-weight: 700; }
.stat-note { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.7; }

.fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.fit-col { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.fit-ok h3 { color: var(--brand-deep); }
.fit-no h3 { color: var(--persimmon); }
.clean li {
  position: relative;
  padding: 12px 0 12px 18px;
  border-bottom: 1px solid var(--line);
}
.clean li:last-child { border-bottom: 0; }
.clean li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--brand);
  position: absolute;
  left: 0;
  top: 20px;
}
.fit-no li::before { background: var(--persimmon); }

.steps { background: var(--sand); }
.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.step {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.step-no {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand);
  color: var(--ink);
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 10px;
}

.bar {
  display: grid;
  grid-template-columns: .7fr 1.3fr;
  gap: 18px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 16px;
}
.bar:nth-child(2) { margin-left: 8%; }
.bar:nth-child(3) { margin-left: 3%; }
.bar:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.bar p { margin-bottom: 0.4em; }
.bar-side { border-left: 3px solid var(--brand); padding-left: 16px; }

.cases { background: var(--sand); }
.case-wall {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  grid-template-areas: "lg s1 s2" "lg s3 s4";
  gap: 16px;
}
.c-lg { grid-area: lg; }
.c1 { grid-area: s1; }
.c2 { grid-area: s2; }
.c3 { grid-area: s3; }
.c4 { grid-area: s4; }
.case {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  color: inherit;
  text-decoration: none;
  min-width: 0;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.case:hover { border-color: var(--brand); box-shadow: var(--shadow); color: inherit; }
.case img { width: 100%; height: 168px; border-radius: 0; }
.case-lg img { height: 280px; }
.case div { padding: 14px 16px 16px; }
.case p { margin: 0; font-size: 15px; }

.slice { padding: 16px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 180px 1fr; gap: 16px; }
.slice h3 { margin: 0; }
.slice p { margin: 0; }

.news { background: var(--sand); }
.news-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
}
.news-item:hover h3 { color: var(--brand-deep); }
.news-item h3 { margin: 0 0 4px; font-size: 18px; }
.news-item p { margin: 0; color: var(--muted); font-size: 14px; }
.date { font-weight: 700; color: var(--brand-deep); }
.more-line { margin: 18px 0 0; }

.q-item { display: grid; grid-template-columns: 220px 1fr; gap: 18px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.q-item h3 { margin: 0; font-size: 18px; }
.q-item p { margin: 0; }

.partners { background: var(--sand); }
.name-row { display: flex; flex-wrap: wrap; gap: 10px 28px; color: var(--muted); font-size: 14px; }
.name-row li { padding-left: 14px; position: relative; }
.name-row li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); position: absolute; left: 0; top: .65em; }

.channel-grid { display: grid; grid-template-columns: 1.4fr .85fr; gap: 16px; }
.ch {
  display: block;
  min-height: 230px;
  border-radius: var(--radius);
  padding: 28px;
  text-decoration: none;
  border: 1px solid var(--line);
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.ch:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-1px); }
.ch:active { transform: none; }
.ch-lg { background: var(--ink); color: var(--on-dark); }
.ch-lg p, .ch-sm p { margin-bottom: 0; }
.ch-lg .card-more { color: var(--brand); }
.ch-sm { background: #fff; color: var(--text); border-top: 4px solid var(--persimmon); }

.faq { background: var(--sand); }
.faq details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 18px;
  margin-bottom: 12px;
}
.faq details[open] { border-color: var(--brand); box-shadow: var(--shadow); }
.faq summary {
  min-height: 58px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; margin-left: auto; color: var(--brand-deep); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq-a { margin: 0 0 16px; }

.assu-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.assu { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; border-top: 3px solid var(--brand); }
.assu p { margin: 0; font-size: 15px; }

.contact { background: var(--ink); color: var(--on-dark); }
.contact h2, .contact .sec-lead { color: var(--on-dark); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
form label { display: grid; gap: 6px; margin-bottom: 14px; font-size: 14px; font-weight: 700; }
input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-input);
  background: #fff;
  color: var(--text);
  padding: 12px 14px;
}
textarea { min-height: 120px; resize: vertical; }
.form-note { color: #F0D7B0; margin: 12px 0 0; }
.site-footer { background: var(--ink); color: #E6DCCB; padding: 48px 0 32px; }
.foot { display: grid; grid-template-columns: 1.3fr 1fr; gap: 20px 32px; }
.foot-brand strong { display: block; color: var(--on-dark); font-size: 20px; margin-bottom: 8px; }
.foot-brand p { margin: 0; }
.foot-links { display: flex; flex-wrap: wrap; gap: 12px 22px; align-content: start; }
.foot-links a { color: var(--on-dark); text-decoration: none; font-weight: 500; min-height: 44px; display: inline-flex; align-items: center; }
.foot-links a:hover { color: var(--brand); }
.copy { grid-column: 1 / -1; margin: 8px 0 0; padding-top: 16px; border-top: 1px solid rgba(246,241,231,.16); font-size: 13px; color: #C9BBA8; }

@media (max-width: 1100px) {
  .hero-grid, .fit-grid, .contact-grid, .channel-grid, .bar, .q-item, .slice { grid-template-columns: 1fr; }
  .matrix { grid-template-columns: 1fr 1fr; grid-template-areas: "spec thick" "color length"; }
  .case-wall { grid-template-columns: 1fr 1fr; grid-template-areas: "lg lg" "s1 s2" "s3 s4"; }
  .bar { margin-left: 0; }
  .bar-side { border-left: 0; border-top: 3px solid var(--brand); padding: 12px 0 0; }
  .step-grid, .stat-grid { grid-template-columns: 1fr 1fr; }
  .hero::before { width: 100%; height: 58%; bottom: auto; clip-path: polygon(0 0, 100% 0, 100% 78%, 0 100%); }
}
@media (max-width: 1024px) {
  main > section { padding: 48px 0; }
  .nav-links { gap: 16px; }
}
@media (max-width: 768px) {
  main > section { padding: 40px 0; }
  .nav {
    grid-template-columns: 1fr auto auto;
    grid-template-areas: "logo toggle cta" "links links links";
    min-height: 72px;
    height: auto;
    padding: 8px 0;
  }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: 8px;
  }
  .nav-check:checked ~ .nav-links { display: flex; }
  .nav-check:focus-visible ~ .nav-toggle { outline: 2px solid var(--brand); outline-offset: 2px; }
  .nav-links a { min-height: 44px; display: flex; align-items: center; border-top: 1px solid rgba(246,241,231,.12); }
  .hero-grid { padding: 40px 0; }
  .assu-grid { grid-template-columns: 1fr 1fr; }
  .foot { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .matrix, .case-wall, .stat-grid, .assu-grid, .news-item { grid-template-columns: 1fr; grid-template-areas: none; }
  .m1, .m2, .m3, .m4, .c-lg, .c1, .c2, .c3, .c4 { grid-area: auto; }
  .badges { flex-wrap: wrap; }
  .badge { flex: 1 1 calc(50% - 12px); }
}
@media (max-width: 480px) {
  body { font-size: 15px; }
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  h3 { font-size: 18px; }
  .m-card, .spec-board, .fit-col, .step, .case div, .ch, .assu { padding: 16px; }
  .hero-actions .btn, .nav-cta { width: 100%; }
  .logo { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .m-card, .case, .ch { transition: none; }
}

/* roulang page: category2 */
:root {
  --ink: #1C1915;
  --paper: #F7F3EA;
  --sand: #EFE6D6;
  --line: #E2D5C0;
  --text: #2A241C;
  --muted: #6E6458;
  --on-dark: #F6F1E7;
  --brand: #C9842A;
  --brand-deep: #8A5A16;
  --persimmon: #7A4636;
  --shadow: 0 8px 24px rgba(28,25,21,.08);
  --radius: 12px;
  --radius-input: 8px;
  --max: 1120px;
}
/* roulang page: category2 */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 16.5px;
  line-height: 1.8;
}
img, svg { max-width: 100%; display: block; object-fit: cover; }
h1, h2, h3, p, ul, dl, dd { margin: 0; }
ul { padding: 0; list-style: none; }
h1 { font-size: 40px; line-height: 1.25; font-weight: 700; }
h2 { font-size: 28px; line-height: 1.35; font-weight: 700; }
h3 { font-size: 20px; line-height: 1.4; font-weight: 700; }
p + p { margin-top: 0.85em; }
a { color: var(--brand-deep); text-underline-offset: 3px; }
a:hover { color: #6d4710; }
button, input, textarea { font: inherit; color: inherit; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
main > section { padding: 72px 0; scroll-margin-top: 16px; }
.site-header { background: var(--ink); color: var(--on-dark); position: sticky; top: 0; z-index: 20; }
.nav {
  min-height: 72px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "logo links cta";
  align-items: center;
  gap: 12px 20px;
}
.logo {
  grid-area: logo;
  color: var(--on-dark);
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
}
.logo:hover { color: var(--brand); }
.nav-links {
  grid-area: links;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  color: var(--on-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--brand); }
.nav-cta { grid-area: cta; }
.nav-check {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.nav-toggle {
  display: none;
  grid-area: toggle;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(246,241,231,.35);
  border-radius: 8px;
  color: var(--on-dark);
  cursor: pointer;
  padding: 0 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease, border-color .2s ease, color .2s ease;
}
.btn-solid { background: var(--brand); color: var(--ink); }
.btn-solid:hover { background: #B97526; color: var(--ink); transform: translateY(-1px); }
.btn-solid:active { transform: none; background: #A86820; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--brand-deep); }
.btn-ghost:hover { background: rgba(201,132,42,.16); color: var(--ink); transform: translateY(-1px); }
.btn-ghost:active { transform: none; }
.btn:focus-visible, .nav-toggle:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
input, textarea {
  width: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-input);
  padding: 10px 12px;
  line-height: 1.6;
}
input:focus, textarea:focus { border-color: var(--brand); }
.hero { position: relative; background: var(--ink); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 36px; align-items: center; padding: 72px 0; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  font-size: 13px;
  font-weight: 700;
}
.tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--persimmon);
  margin-bottom: 8px;
}
.page-head { background: var(--paper); }
.page-head h1 { max-width: 16em; }
.sum-line { margin-top: 8px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.scope-bar { background: var(--sand); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.scope-bar p { margin: 0; font-weight: 500; }
.bench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  grid-template-areas: "list side" "more side";
  gap: 22px 24px;
  align-items: start;
  padding: 72px 0;
}
.dir-board { grid-area: list; padding: 0; }
.more-board { grid-area: more; padding: 0; border-top: 1px solid var(--line); }
.side-board {
  grid-area: side;
  padding: 22px;
  background: var(--sand);
  border: 1px solid var(--line);
  border-left: 3px solid var(--persimmon);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: sticky;
  top: 88px;
}
.dir-board h2, .side-board h2, .hue-copy h2, .qa h2 { margin-bottom: 18px; }
.dir-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.dir-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.dir-card:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.dir-card h3 { margin-bottom: 12px; }
.spec-dl { display: grid; gap: 8px; }
.spec-dl div { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 8px; font-size: 14px; line-height: 1.6; }
.spec-dl dt { color: var(--muted); font-weight: 700; }
.spec-dl dd { margin: 0; }
.more-board a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 700;
  text-decoration: underline;
}
.point-list { display: grid; gap: 12px; }
.point-list li {
  padding: 12px 0 12px 16px;
  border-top: 1px solid var(--line);
  position: relative;
}
.point-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  position: absolute;
  left: 0;
  top: 1.15em;
}
.point-list strong { display: block; font-size: 16px; }
.point-list span { display: block; color: var(--muted); font-size: 14px; }
.hue-band { background: var(--sand); }
.hue-inner {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 28px;
  align-items: center;
}
.hue-copy p { max-width: 38em; }
.hue-visual {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.hue-visual svg { width: 100%; height: 280px; object-fit: cover; }
.qa { background: var(--paper); }
.qa-list { display: grid; gap: 12px; max-width: 820px; }
.qa details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 18px;
}
.qa details[open] { border-color: var(--brand); box-shadow: var(--shadow); }
.qa summary {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after { content: "＋"; color: var(--brand-deep); font-weight: 700; }
.qa details[open] summary::after { content: "－"; }
.qa details p { padding: 0 0 16px; color: var(--text); }
.cta-line { background: var(--ink); color: var(--on-dark); }
.cta-row {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.cta-row p { margin: 0; font-size: 20px; line-height: 1.4; font-weight: 700; }
.site-footer { background: var(--ink); color: var(--on-dark); padding: 48px 0 28px; }
.foot { display: grid; grid-template-columns: 1.4fr 1fr; gap: 18px 24px; }
.foot-brand strong { display: block; font-size: 18px; line-height: 1.4; }
.foot-brand p { margin-top: 8px; color: #cfc6b8; }
.foot-links { display: flex; flex-wrap: wrap; gap: 12px 22px; align-content: start; }
.foot-links a { color: var(--on-dark); text-decoration: none; font-weight: 500; min-height: 44px; display: inline-flex; align-items: center; }
.foot-links a:hover { color: var(--brand); }
.copy {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(226,213,192,.25);
  color: #b7ad9f;
  font-size: 13px;
}
@media (max-width: 1100px) {
  main > section { padding: 48px 0; }
  .bench { grid-template-columns: 1fr; grid-template-areas: "list" "more" "side"; padding: 48px 0; }
  .side-board { position: static; }
  .hue-inner, .hero-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  main > section { padding: 40px 0; }
  .bench { padding: 40px 0; }
  .nav {
    grid-template-columns: auto auto 1fr;
    grid-template-areas: "logo toggle cta" "links links links";
    min-height: 72px;
  }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 4px 0 12px;
  }
  .nav-check:checked ~ .nav-links { display: flex; }
  .nav-links a { min-height: 44px; display: flex; align-items: center; }
  .dir-grid { grid-template-columns: 1fr; }
  .cta-row { flex-direction: column; align-items: flex-start; padding: 8px 0; }
  .foot { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  body { font-size: 15.5px; }
  h1, .page-head h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  h3 { font-size: 18px; }
  .logo { font-size: 15px; }
  .nav-cta { padding: 0 14px; }
  .dir-card, .side-board { padding: 16px; }
  .cta-row p { font-size: 18px; }
  .hue-visual svg { height: 220px; }
}
main > section.page-head { padding: 32px 0 18px; }
main > section.scope-bar { padding: 16px 0; }
main > section.cta-line { padding: 20px 0; }
.bench > section { padding: 0; }

/* roulang page: category1 */
:root {
  --ink: #1C1915;
  --paper: #F7F3EA;
  --sand: #EFE6D6;
  --line: #E2D5C0;
  --text: #2A241C;
  --muted: #6E6458;
  --on-dark: #F6F1E7;
  --brand: #C9842A;
  --brand-deep: #8A5A16;
  --persimmon: #7A4636;
  --shadow: 0 8px 24px rgba(28,25,21,.08);
  --radius: 12px;
  --radius-input: 8px;
  --max: 1120px;
}
/* roulang page: category1 */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 16.5px;
  line-height: 1.8;
}
img, svg { max-width: 100%; display: block; }
img { object-fit: cover; }
a { color: var(--brand-deep); text-underline-offset: 3px; }
a:hover { color: #6d4710; }
button, input, textarea { font: inherit; color: inherit; }
p { margin: 0 0 .85em; }
h1, h2, h3 { font-weight: 700; color: var(--ink); }
h1 { font-size: 40px; line-height: 1.25; margin: 0 0 .4em; }
h2 { font-size: 28px; line-height: 1.35; margin: 0 0 .55em; }
h3 { font-size: 20px; line-height: 1.4; margin: 0 0 .4em; }
ul { margin: 0; padding: 0; list-style: none; }
::selection { background: rgba(201,132,42,.28); }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
main > section { padding: 72px 0; scroll-margin-top: 16px; }
.sec-lead { max-width: 46em; margin: 0 0 28px; color: var(--text); }
.muted { color: var(--muted); }
.site-header { background: var(--ink); color: var(--on-dark); position: relative; }
.nav {
  min-height: 72px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "logo links cta";
  align-items: center;
  gap: 12px 20px;
}
.logo {
  grid-area: logo;
  color: var(--on-dark);
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
}
.logo:hover { color: var(--brand); }
.nav-links {
  grid-area: links;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  color: var(--on-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--brand); }
.nav-cta { grid-area: cta; }
.nav-check {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.nav-toggle {
  display: none;
  grid-area: toggle;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(246,241,231,.35);
  border-radius: 8px;
  color: var(--on-dark);
  cursor: pointer;
  padding: 0 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease, border-color .2s ease, color .2s ease;
}
.btn-solid { background: var(--brand); color: var(--ink); }
.btn-solid:hover { background: #B97526; color: var(--ink); transform: translateY(-1px); }
.btn-solid:active { transform: none; background: #A86820; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--brand-deep); }
.btn-ghost:hover { background: rgba(201,132,42,.16); color: var(--ink); transform: translateY(-1px); }
.btn-ghost:active { transform: none; }
.btn:focus-visible, .nav-toggle:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--persimmon);
  margin: 0 0 8px;
}
.page-head { background: var(--sand); padding: 32px 0; }
.page-head-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: end;
}
.page-head h1 { font-size: 32px; line-height: 1.3; margin: 0 0 8px; }
.page-head .scope { margin: 0; color: var(--muted); max-width: 36em; }
.count-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 132px;
  padding: 14px 18px;
  text-align: center;
  box-shadow: var(--shadow);
}
.count-box strong {
  display: block;
  font-size: 32px;
  line-height: 1.1;
  color: var(--brand-deep);
  font-variant-numeric: tabular-nums;
}
.count-box span { font-size: 13px; color: var(--muted); }
.filters { background: var(--paper); }
.filter-stack { display: grid; gap: 14px; }
.filter-line { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.filter-name {
  min-width: 3em;
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
}
.chip {
  border: 1.5px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 999px;
  min-height: 36px;
  padding: 4px 14px;
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease, color .2s ease;
}
.chip:hover { border-color: var(--brand); }
.chip:active { background: rgba(201,132,42,.18); }
.chip.is-on {
  border-color: var(--brand);
  background: rgba(201,132,42,.12);
  color: var(--brand-deep);
  font-weight: 700;
}
.list-sec { background: var(--sand); }
.entry {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0 0 14px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.entry:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.entry.is-hide { display: none; }
.row-fig { margin: 0; background: var(--sand); min-height: 148px; }
.row-fig svg { width: 100%; height: 148px; }
.entry-body { padding: 16px 18px 14px; }
.spec-bits {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0 0 8px;
}
.spec-bits li { min-width: 7em; }
.spec-bits b {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  line-height: 1.4;
}
.spec-bits span { font-weight: 700; }
.entry-body p:last-child { margin: 0; }
.none-note {
  margin: 8px 0 0;
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.read-sec { background: var(--paper); }
.read-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.read-item:first-of-type { border-top: 1px solid var(--line); }
.read-item h3 { margin: 0; }
.read-item p { margin: 0; }
.fit-sec { background: var(--sand); }
.fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.fit-col {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.fit-col h3 { margin-bottom: 12px; }
.fit-col li {
  position: relative;
  padding: 8px 0 8px 16px;
  border-bottom: 1px solid var(--line);
}
.fit-col li:last-child { border-bottom: 0; }
.fit-col li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  position: absolute;
  left: 0;
  top: 1.05em;
}
.fit-col.unfit li::before { background: var(--persimmon); }
.news-sec { background: var(--paper); }
.rel-link {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
}
.rel-link:first-of-type { border-top: 1px solid var(--line); }
.rel-link strong { display: block; font-size: 18px; line-height: 1.45; color: var(--ink); }
.rel-link span { color: var(--muted); font-size: 14px; }
.rel-link:hover strong { color: var(--brand-deep); }
.more-sec { background: var(--sand); }
.more-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.more-bar h2 { margin: 0 0 6px; }
.more-bar p { margin: 0; color: var(--muted); }
.faq { background: var(--paper); }
.faq details {
  background: var(--sand);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 18px;
  margin: 0 0 12px;
}
.faq details[open] { border-color: var(--brand); background: #fff; }
.faq summary {
  cursor: pointer;
  font-weight: 700;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--brand-deep);
  border-bottom: 2px solid var(--brand-deep);
  transform: rotate(45deg);
  flex: none;
  margin-top: -4px;
}
.faq details[open] summary::after { transform: rotate(225deg); margin-top: 4px; }
.faq details p { margin: 0 0 16px; }
.back-row { margin: 18px 0 0; }
.site-footer { background: var(--ink); color: var(--on-dark); padding: 48px 0 28px; }
.foot { display: grid; gap: 16px; }
.foot-brand strong { font-size: 18px; line-height: 1.4; }
.foot-brand p { color: rgba(246,241,231,.78); margin: 8px 0 0; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.foot-links a { color: var(--on-dark); text-decoration: none; font-weight: 500; min-height: 44px; display: inline-flex; align-items: center; }
.foot-links a:hover { color: var(--brand); }
.copy { color: rgba(246,241,231,.65); font-size: 13px; margin: 8px 0 0; }
@media (max-width: 1100px) {
  .entry { grid-template-columns: 180px 1fr; }
  .read-item { grid-template-columns: 120px 1fr; }
}
@media (max-width: 768px) {
  main > section { padding: 48px 0; }
  .page-head { padding: 28px 0; }
  .nav {
    grid-template-columns: 1fr auto auto;
    grid-template-areas: "logo toggle cta" "links links links";
    align-items: start;
    padding: 8px 0;
  }
  .logo, .nav-toggle, .nav-cta { align-self: center; }
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 4px 0 12px;
  }
  .nav-links a {
    min-height: 44px;
    display: flex;
    align-items: center;
    border-top: 1px solid rgba(246,241,231,.14);
  }
  .nav-check:checked ~ .nav-links { display: flex; }
  .page-head-grid, .fit-grid, .entry, .read-item, .more-bar { grid-template-columns: 1fr; }
  .page-head-grid { align-items: start; }
  .count-box { justify-self: start; }
  .entry { display: grid; }
  .entry-body { padding: 16px; }
  .more-bar { display: grid; }
  .page-head h1 { font-size: 28px; }
  h2 { font-size: 24px; }
}
@media (max-width: 480px) {
  body { font-size: 15px; }
  .container { width: min(var(--max), calc(100% - 32px)); }
  main > section { padding: 40px 0; }
  .logo { font-size: 15px; }
  .nav-cta { padding: 0 12px; }
  .page-head h1 { font-size: 26px; }
  h2 { font-size: 22px; }
  .entry-body, .fit-col, .more-bar { padding: 16px; }
  .count-box { min-width: 0; }
  .filter-name { width: 100%; }
  .row-fig, .row-fig svg { height: 120px; min-height: 120px; }
}