/* roulang page: index */
:root {
  --rose: #8C4A4E;
  --moss: #6E7F6A;
  --linen: #F4EFE6;
  --ash: #E7E1D6;
  --ink: #2C241C;
  --muted: #5C534A;
  --walnut: #3F2A24;
  --line: #E0D8CC;
  --paper: #FBF8F3;
  --shadow: 0 10px 28px rgba(44,36,28,.08);
  --radius: 6px;
  --gap: 1.25rem;
  --header: 72px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--linen);
  color: var(--ink);
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
a { color: var(--rose); text-decoration: none; }
a:hover { color: var(--walnut); }
p { margin: 0 0 1em; }
h1, h2, h3, h4 {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  color: var(--ink);
  line-height: 1.35;
  letter-spacing: .02em;
  margin: 0 0 .6em;
}
h1 { font-size: clamp(2rem, 4vw, 3.25rem); font-weight: 700; }
h2 { font-size: clamp(1.45rem, 2.4vw, 2rem); font-weight: 700; }
h3 { font-size: 1.12rem; font-weight: 600; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--walnut);
  color: var(--linen);
  height: var(--header);
  border-bottom: 1px solid rgba(224,216,204,.18);
}
.nav-bar {
  height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--linen);
  min-width: 0;
}
.brand:hover { color: #fff; }
.mark {
  width: 22px;
  height: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 2px;
  flex: 0 0 auto;
}
.mark i { display: block; }
.mark i:nth-child(1) { background: var(--rose); }
.mark i:nth-child(2) { background: var(--moss); }
.mark i:nth-child(3) { background: var(--ash); }
.mark i:nth-child(4) { background: var(--rose); opacity: .72; }
.brand-name { font-family: "Noto Serif SC", serif; font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.brand-short { display: none; }
.btn-cta, button.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  background: var(--rose);
  color: #FBF8F3;
  border: 1px solid var(--rose);
  border-radius: 2px;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: none;
  transition: background .2s ease, transform .2s ease, border-color .2s ease;
}
.btn-cta:hover, .btn-cta:focus {
  background: var(--walnut);
  border-color: var(--walnut);
  color: #fff;
  transform: translateY(-1px);
}
.btn-cta:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 2px;
}
.btn-cta:active { transform: translateY(0); }
main { display: block; }
.band { padding: 72px 0; }
.band-linen { background: var(--linen); }
.band-ash { background: var(--ash); }
.band-paper { background: var(--paper); }
.band-dark { background: var(--walnut); color: #F4EFE6; }
.band-dark h2, .band-dark h3, .band-dark p { color: #F4EFE6; }
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--moss);
  font-size: .86rem;
  letter-spacing: .12em;
  margin-bottom: .7rem;
}
.kicker::before { content: ""; width: 18px; height: 1px; background: var(--moss); }
.lead-line { font-size: 1.05rem; color: var(--muted); max-width: 40rem; margin-bottom: 1.4rem; }
.section-copy { max-width: 46rem; color: var(--muted); margin-bottom: 1.5rem; }
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.metric {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 16px 14px;
}
.metric b {
  display: block;
  font-family: "Noto Serif SC", serif;
  font-size: 2rem;
  line-height: 1.1;
  color: var(--rose);
}
.metric span { display: block; color: var(--ink); font-weight: 700; }
.metric small { color: var(--moss); letter-spacing: .08em; }
.strips { display: flex; flex-direction: column; gap: 10px; }
.strip {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 16px;
  align-items: center;
  min-height: 64px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
}
.strip:nth-child(odd) { border-left: 6px solid var(--rose); }
.strip:nth-child(even) { border-left: 6px solid var(--moss); }
.strip strong { font-family: "Noto Serif SC", serif; }
.strip em { font-style: normal; color: var(--muted); }
.tag {
  display: inline-block;
  border: 1px solid var(--moss);
  color: var(--moss);
  border-radius: 2px;
  padding: 0 8px;
  font-size: .78rem;
  line-height: 1.7;
}
.tile {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  height: 100%;
  transition: border-color .2s ease, transform .2s ease;
}
.tile h3 { margin-top: .35rem; }
.tile p:last-child { margin-bottom: 0; color: var(--muted); }
.frame {
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: var(--ash);
  margin-bottom: 12px;
}
.ratio-wide { aspect-ratio: 16/10; }
.ratio-tall { aspect-ratio: 4/5; }
.swatch { width: 100%; height: 100%; position: relative; }
.swatch span, .swatch i { position: absolute; display: block; }
.s1 { background: #E7D2CB; }
.s1 i { width: 46%; height: 70%; left: 8%; top: 15%; background: var(--rose); }
.s1 span { width: 28%; height: 40%; right: 10%; bottom: 12%; background: var(--moss); }
.s2 { background: #D9D3C6; }
.s2 i { width: 70%; height: 18%; left: 12%; top: 30%; background: var(--walnut); }
.s2 span { width: 36%; height: 36%; right: 14%; bottom: 16%; background: var(--rose); opacity: .85; }
.s3 { background: #E4DDD2; }
.s3 i { width: 22%; height: 78%; left: 18%; top: 11%; background: var(--moss); }
.s3 span { width: 40%; height: 22%; right: 12%; top: 22%; background: var(--rose); }
.s4 { background: #EADFD6; }
.s4 i { inset: 18% 16% auto 16%; height: 28%; background: var(--walnut); }
.s4 span { width: 48%; height: 22%; left: 16%; bottom: 16%; background: var(--rose); }
.s5 { background: #DDD6CB; }
.s5 i { width: 34%; height: 34%; left: 14%; top: 16%; background: var(--rose); }
.s5 span { width: 42%; height: 18%; right: 12%; bottom: 18%; background: var(--moss); }
@media (hover: hover) {
  .tile:hover, .pick:hover, .news-item:hover, .entry:hover {
    transform: translateY(-2px);
    border-color: var(--rose);
  }
  .tile:hover .swatch, .pick:hover .swatch { transform: scale(1.04); }
}
.swatch { transition: transform .35s ease; }
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
  padding: 22px;
  min-height: 100%;
}
.panel.right { background: #F7F1EA; border-color: #D9C7C2; }
.panel ul { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.panel li + li { margin-top: .45rem; }
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 22px;
  height: 1px;
  background: var(--moss);
}
.node {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 14px 12px;
  position: relative;
}
.node time { color: var(--rose); font-weight: 700; display: block; margin-bottom: .35rem; }
.node p { margin: 0; color: var(--muted); }
.entry-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.entry {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 160px;
  padding: 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  box-shadow: var(--shadow);
  transition: border-color .2s ease, transform .2s ease;
}
.entry small { color: var(--moss); letter-spacing: .08em; }
.entry strong { font-family: "Noto Serif SC", serif; font-size: 1.45rem; }
.news-list { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.news-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
  color: inherit;
  transition: border-color .2s ease, transform .2s ease;
}
.news-item time { color: var(--rose); font-weight: 700; }
.news-item p { margin: 0; color: var(--muted); }
.pick-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 14px; }
.pick-side { display: grid; gap: 14px; }
.pick {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  color: inherit;
  transition: border-color .2s ease, transform .2s ease;
}
.pick .txt { padding: 14px 14px 16px; }
.pick p { margin: 0; color: var(--muted); }
.more-wrap { margin-top: 18px; }
.guard-grid, .device-grid, .path-grid { display: grid; gap: 14px; }
.guard-grid { grid-template-columns: 1.2fr .8fr; }
.guard-list { display: grid; gap: 10px; }
.guard-item, .device, .step {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.guard-item h3, .device h3, .step h3 { margin-bottom: .25rem; }
.guard-item p, .device p, .step p { margin: 0; color: var(--muted); }
.device-grid { grid-template-columns: repeat(3, 1fr); }
.screen {
  height: 92px;
  border: 1px solid var(--line);
  border-radius: 4px;
  margin-bottom: 12px;
  background:
    linear-gradient(var(--ash), var(--ash)) 10% 18% / 46% 8px no-repeat,
    linear-gradient(var(--rose), var(--rose)) 10% 38% / 70% 8px no-repeat,
    linear-gradient(var(--moss), var(--moss)) 10% 58% / 38% 8px no-repeat,
    var(--paper);
}
.screen.mid { width: 78%; margin-inline: auto; }
.screen.wide { height: 72px; }
.qa { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
.qa article { padding: 14px 0; border-top: 1px solid var(--line); }
.qa h3 { font-size: 1.02rem; }
.qa p { margin: 0; color: var(--muted); }
.line-acc { --bs-accordion-bg: transparent; --bs-accordion-border-color: var(--line); --bs-accordion-btn-focus-box-shadow: none; --bs-accordion-active-bg: transparent; --bs-accordion-active-color: var(--ink); }
.line-acc .accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; }
.line-acc .accordion-button {
  background: transparent;
  color: var(--ink);
  font-family: "Noto Serif SC", serif;
  font-size: 1.05rem;
  box-shadow: none;
  padding: 16px 0;
}
.line-acc .accordion-button:not(.collapsed) { color: var(--rose); }
.line-acc .accordion-button::after { filter: grayscale(1); }
.line-acc .accordion-body { color: var(--muted); padding: 0 0 16px; }
.path-grid { grid-template-columns: repeat(3, 1fr); }
.step a { font-weight: 700; }
.sheet {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 28px;
  align-items: start;
}
label { display: block; font-weight: 700; margin-bottom: 6px; }
.field { margin-bottom: 14px; }
input, select, textarea {
  width: 100%;
  background: #FBF8F3;
  color: var(--ink);
  border: 1px solid #CDBFB4;
  border-radius: 2px;
  min-height: 44px;
  padding: 8px 12px;
}
textarea { min-height: 110px; resize: vertical; }
.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; color: #F4EFE6; }
.check input { width: auto; margin-top: .45rem; accent-color: var(--moss); }
.form-note { min-height: 1.8em; margin-top: 10px; }
.form-note.is-ok { color: #D5E0CF; }
.form-note.is-warn { color: #F0C7C2; }
.site-footer {
  background: #2C241C;
  color: #E7E1D6;
  padding: 28px 0 34px;
}
.foot-row { display: flex; justify-content: space-between; gap: 18px; align-items: center; flex-wrap: wrap; }
.site-footer a { color: #F4EFE6; }
.site-footer p { margin: 0; color: #CDBFB4; }
.foot-links { display: flex; gap: 16px; flex-wrap: wrap; }
@media (max-width: 1199px) {
  .container { width: min(1080px, calc(100% - 36px)); }
}
@media (max-width: 1024px) {
  .metric-grid, .timeline { grid-template-columns: 1fr 1fr; }
  .timeline::before { display: none; }
  .pick-grid, .guard-grid, .sheet { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .band { padding: 52px 0; }
  .compare, .entry-row, .qa, .device-grid, .path-grid { grid-template-columns: 1fr; }
  .strip, .news-item { grid-template-columns: 1fr; gap: 4px; }
  .screen.mid, .screen.wide { width: 100%; }
}
@media (max-width: 576px) {
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .brand-full { display: none; }
  .brand-short { display: inline; }
  .container { width: calc(100% - 24px); }
  h1 { font-size: 1.85rem; }
}
@media (hover: none) {
  .tile:active, .pick:active, .entry:active, .btn-cta:active {
    border-color: var(--rose);
    transform: translateY(1px);
  }
}

/* roulang page: category2 */
:root {
 --rose: #8C4A4E;
 --moss: #6E7F6A;
 --linen: #F4EFE6;
 --ash: #E7E1D6;
 --ink: #2C241C;
 --muted: #5C534A;
 --walnut: #3F2A24;
 --line: #E0D8CC;
 --paper: #FBF8F3;
 --shadow: 0 10px 28px rgba(44,36,28,.08);
 --radius: 6px;
 --gap: 1.25rem;
 --header: 72px;
}
/* roulang page: category2 */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 background: var(--linen);
 color: var(--ink);
 font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
 font-size: 16px;
 line-height: 1.8;
 text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
a { color: var(--rose); text-decoration: none; }
a:hover { color: var(--walnut); }
p { margin: 0 0 1em; }
h1, h2, h3 {
 font-family: "Noto Serif SC", "Source Han Serif SC", serif;
 font-weight: 700;
 letter-spacing: .04em;
 line-height: 1.35;
 color: var(--ink);
 margin: 0 0 .6rem;
}
h1 { font-size: clamp(1.85rem, 3vw, 2.55rem); }
h2 { font-size: clamp(1.28rem, 2vw, 1.6rem); }
h3 { font-size: 1.08rem; }
.container { width: min(1180px, calc(100% - 32px)); max-width: none; margin: 0 auto; padding: 0; }
.site-header {
 position: sticky;
 top: 0;
 z-index: 40;
 background: var(--walnut);
 color: var(--linen);
 height: var(--header);
 border-bottom: 1px solid rgba(224,216,204,.18);
}
.nav-bar {
 height: var(--header);
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 16px;
}
.brand {
 display: flex;
 align-items: center;
 gap: 10px;
 color: var(--linen);
 min-width: 0;
}
.brand:hover { color: #fff; }
.brand-name { font-family: "Noto Serif SC", serif; font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.brand-short { display: none; }
.mark {
 width: 22px;
 height: 22px;
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 2px;
 flex: 0 0 auto;
}
.mark i { display: block; background: var(--rose); }
.mark i:nth-child(2) { background: var(--moss); }
.mark i:nth-child(3) { background: #CDBFB4; }
.mark i:nth-child(4) { background: var(--linen); }
.btn-cta, button.btn-cta, a.btn-cta {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 42px;
 padding: 0 18px;
 background: var(--rose);
 color: #FBF8F3;
 border: 1px solid var(--rose);
 border-radius: 2px;
 font-weight: 700;
 letter-spacing: .04em;
 box-shadow: none;
 transition: background .2s ease, transform .2s ease, border-color .2s ease, color .2s ease;
}
.btn-cta:hover, .btn-cta:focus {
 background: var(--walnut);
 border-color: var(--walnut);
 color: #fff;
 transform: translateY(-1px);
}
.btn-cta:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
 outline: 2px solid var(--moss);
 outline-offset: 2px;
}
.btn-cta:active { transform: translateY(0); }
.btn-line {
 display: inline-flex;
 align-items: center;
 min-height: 42px;
 padding: 0 16px;
 border: 1px solid currentColor;
 border-radius: 2px;
 color: inherit;
 font-weight: 700;
 letter-spacing: .04em;
 transition: background .2s ease, color .2s ease, transform .2s ease;
}
.btn-line:hover { background: var(--linen); color: var(--walnut); transform: translateY(-1px); }
main { display: block; }
.band { padding: 64px 0; }
.band-paper { background: var(--paper); }
.band-ash { background: var(--ash); }
.page-head {
 background: var(--ash);
 padding: 36px 0 32px;
 border-bottom: 1px solid var(--line);
}
.kicker {
 display: flex;
 align-items: center;
 gap: 10px;
 margin-bottom: 12px;
 color: var(--muted);
 font-size: .92rem;
}
.age {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-width: 42px;
 height: 26px;
 padding: 0 8px;
 border: 1px solid var(--rose);
 color: var(--rose);
 font-weight: 700;
 letter-spacing: .06em;
 font-size: .78rem;
}
.lead-line { font-size: 1.05rem; color: var(--muted); max-width: 42rem; margin: 0; }
.section-copy { max-width: 46rem; color: var(--muted); margin-bottom: 1.5rem; }
.tag {
 display: inline-block;
 border: 1px solid var(--moss);
 color: var(--moss);
 border-radius: 2px;
 padding: 0 8px;
 font-size: .78rem;
 line-height: 1.7;
 background: transparent;
}
.scene-index {
 display: flex;
 gap: 10px;
 overflow-x: auto;
 padding-bottom: 6px;
 scrollbar-width: thin;
}
.chip {
 flex: 0 0 auto;
 display: inline-flex;
 align-items: center;
 min-height: 40px;
 padding: 0 14px;
 border: 1px solid var(--line);
 background: var(--paper);
 color: var(--ink);
 border-radius: 2px;
 font-weight: 500;
 transition: border-color .2s ease, transform .2s ease, color .2s ease;
}
.chip:hover, .chip:focus {
 border-color: var(--rose);
 color: var(--rose);
 transform: translateY(-1px);
}
.dir-list { display: flex; flex-direction: column; gap: 14px; }
.dir-card {
 display: flex;
 gap: 18px;
 align-items: stretch;
 background: var(--paper);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 14px;
 color: inherit;
 transition: border-color .2s ease, transform .2s ease;
}
.band-paper .dir-card { background: var(--linen); }
.frame {
 width: 148px;
 flex: 0 0 148px;
 aspect-ratio: 4 / 5;
 overflow: hidden;
 border-radius: var(--radius);
 border: 1px solid var(--line);
 background: var(--ash);
}
.swatch { display: block; width: 100%; height: 100%; transition: transform .35s ease; }
.s1 { background: linear-gradient(160deg, #3F2A24 0%, #8C4A4E 58%, #E7E1D6 100%); }
.s2 { background: linear-gradient(180deg, #6E7F6A 0 18%, #F4EFE6 18% 62%, #8C4A4E 62% 100%); }
.s3 { background: repeating-linear-gradient(90deg, #2C241C 0 10px, #E7E1D6 10px 18px, #8C4A4E 18px 28px); }
.s4 { background: linear-gradient(135deg, #FBF8F3, #FBF8F3 40%, #8C4A4E 40% 48%, #3F2A24 48% 100%); }
.s5 { background: linear-gradient(200deg, #E0D8CC 0 30%, #6E7F6A 30% 46%, #3F2A24 46% 100%); }
.s6 { background: linear-gradient(90deg, #F4EFE6 0 22%, #8C4A4E 22% 38%, #2C241C 38% 100%); }
.dir-body { min-width: 0; display: flex; flex-direction: column; gap: 6px; padding: 4px 4px 2px 0; }
.dir-body h3 { margin: 0; }
.dir-body h3 a { color: var(--ink); }
.dir-body h3 a:hover { color: var(--rose); }
.dir-body p { margin: 0; color: var(--muted); }
.dir-meta {
 margin-top: auto;
 display: flex;
 justify-content: space-between;
 gap: 12px;
 align-items: center;
 flex-wrap: wrap;
 padding-top: 8px;
 color: var(--muted);
 font-size: .92rem;
}
.dir-meta a { font-weight: 700; }
.step-row, .device-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.step, .device, .note {
 background: var(--paper);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 18px 16px;
}
.band-paper .step, .band-paper .device, .band-ash .note { background: var(--linen); }
.step h3, .device h3, .note h3 { margin-bottom: .35rem; }
.step p, .device p, .note p { margin: 0; color: var(--muted); }
.ord {
 display: inline-block;
 margin-bottom: 8px;
 color: var(--rose);
 font-weight: 700;
 letter-spacing: .08em;
 font-size: .82rem;
}
.note-list { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.note {
 border-radius: 0;
 box-shadow: none;
 border-left: 0;
 border-right: 0;
 border-top: 0;
 padding: 18px 2px;
 display: grid;
 grid-template-columns: 120px 1fr;
 gap: 16px;
}
.note time { color: var(--rose); font-weight: 700; }
.screen {
 height: 10px;
 margin-top: 14px;
 background: var(--ash);
 border: 1px solid var(--line);
 position: relative;
}
.screen::after {
 content: "";
 position: absolute;
 inset: 0 auto 0 0;
 background: var(--rose);
}
.screen.narrow::after { width: 42%; }
.screen.mid::after { width: 68%; background: var(--moss); }
.screen.wide::after { width: 100%; background: var(--walnut); }
.line-acc .accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; }
.line-acc .accordion-button {
 background: transparent;
 color: var(--ink);
 font-family: "Noto Serif SC", serif;
 font-size: 1.05rem;
 box-shadow: none;
 padding: 16px 0;
}
.line-acc .accordion-button:not(.collapsed) { color: var(--rose); background: transparent; }
.line-acc .accordion-button:focus { box-shadow: none; }
.line-acc .accordion-button::after { filter: grayscale(1); }
.line-acc .accordion-body { color: var(--muted); padding: 0 0 16px; }
.cta-band { background: var(--walnut); color: var(--linen); padding: 56px 0; }
.cta-band h2 { color: var(--linen); }
.cta-band p { color: #E7E1D6; max-width: 38rem; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.cta-band .btn-line { color: var(--linen); }
.cta-band .btn-line:hover { color: var(--walnut); }
.site-footer { background: #2C241C; color: #E7E1D6; padding: 28px 0 34px; }
.foot-row { display: flex; justify-content: space-between; gap: 18px; align-items: center; flex-wrap: wrap; }
.site-footer a { color: #F4EFE6; }
.site-footer p { margin: 0; color: #CDBFB4; }
.foot-links { display: flex; gap: 16px; flex-wrap: wrap; }
.dir-card:hover, .chip:hover, .step:hover, .device:hover {
 border-color: var(--rose);
}
.dir-card:hover { transform: translateY(-2px); }
.dir-card:hover .swatch { transform: scale(1.04); }
.dir-card:active, .chip:active, .btn-cta:active, .btn-line:active { transform: translateY(1px); }
@media (min-width: 1200px) {
 .container { width: min(1120px, calc(100% - 80px)); }
}
@media (max-width: 1199px) {
 .container { width: min(1080px, calc(100% - 36px)); }
}
@media (max-width: 1024px) {
 .step-row, .device-grid { grid-template-columns: 1fr 1fr; }
 .device:last-child { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
 .band { padding: 52px 0; }
 .page-head { padding: 28px 0 24px; }
 .step-row, .device-grid, .note { grid-template-columns: 1fr; }
 .device:last-child { grid-column: auto; }
 .note time { display: block; }
}
@media (max-width: 576px) {
 .container { width: calc(100% - 24px); }
 .brand-full { display: none; }
 .brand-short { display: inline; }
 .metric-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
 .dir-card { flex-direction: column; }
 .frame { width: min(100%, 220px); flex-basis: auto; }
}
@media (hover: hover) {
 .dir-card:hover { transform: translateY(-2px); border-color: var(--rose); }
 .dir-card:hover .swatch { transform: scale(1.04); }
}
@media (hover: none) {
 .dir-card:hover, .chip:hover, .btn-cta:hover, .btn-line:hover { transform: none; }
}

/* roulang page: category1 */
:root {
 --rose: #8C4A4E;
 --moss: #6E7F6A;
 --linen: #F4EFE6;
 --ash: #E7E1D6;
 --ink: #2C241C;
 --muted: #5C534A;
 --walnut: #3F2A24;
 --line: #E0D8CC;
 --paper: #FBF8F3;
 --shadow: 0 10px 28px rgba(44,36,28,.08);
 --radius: 6px;
 --gap: 1.25rem;
 --header: 72px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 background: var(--linen);
 color: var(--ink);
 font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
 font-size: 16px;
 line-height: 1.8;
 text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
a { color: var(--rose); text-decoration: none; }
a:hover { color: var(--walnut); }
p { margin: 0 0 1em; }
h1, h2, h3 {
 font-family: "Noto Serif SC", "Source Han Serif SC", serif;
 font-weight: 700;
 letter-spacing: .03em;
 color: var(--ink);
}
h1 { font-size: clamp(1.85rem, 3.2vw, 2.65rem); line-height: 1.35; margin: 0 0 .7rem; }
h2 { font-size: clamp(1.35rem, 2vw, 1.7rem); line-height: 1.4; margin: 0 0 .9rem; }
h3 { font-size: 1.08rem; line-height: 1.5; margin: 0 0 .35rem; }
::selection { background: #E7C9C6; color: var(--ink); }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding-left: 0; padding-right: 0; }
.site-header {
 position: sticky;
 top: 0;
 z-index: 40;
 background: var(--walnut);
 color: var(--linen);
 height: var(--header);
 border-bottom: 1px solid rgba(224,216,204,.18);
}
.nav-bar {
 height: var(--header);
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 16px;
}
.brand {
 display: flex;
 align-items: center;
 gap: 10px;
 color: var(--linen);
 min-width: 0;
}
.brand:hover { color: #fff; }
.brand-name { font-family: "Noto Serif SC", serif; font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.brand-short { display: none; }
.mark {
 width: 22px;
 height: 22px;
 display: grid;
 grid-template-columns: 1fr 1fr;
 gap: 2px;
 flex: none;
}
.mark i { display: block; background: var(--rose); }
.mark i:nth-child(2) { background: #CDBFB4; }
.mark i:nth-child(3) { background: var(--moss); }
.mark i:nth-child(4) { background: #6A3034; }
.btn-cta, button.btn-cta {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 42px;
 padding: 0 18px;
 background: var(--rose);
 color: #FBF8F3;
 border: 1px solid var(--rose);
 border-radius: 2px;
 font-weight: 700;
 letter-spacing: .04em;
 box-shadow: none;
 cursor: pointer;
 transition: background .2s ease, transform .2s ease, border-color .2s ease, color .2s ease;
}
.btn-cta:hover, .btn-cta:focus {
 background: var(--walnut);
 border-color: var(--walnut);
 color: #fff;
 transform: translateY(-1px);
}
.site-header .btn-cta:hover, .site-header .btn-cta:focus {
 background: var(--linen);
 border-color: var(--linen);
 color: var(--walnut);
}
.btn-cta:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
 outline: 2px solid var(--moss);
 outline-offset: 2px;
}
.btn-cta:active { transform: translateY(0); }
.site-header .btn-cta { flex: none; }
main { display: block; }
.lead-line { font-size: 1.05rem; color: var(--muted); max-width: 42rem; margin: 0; }
.section-copy { max-width: 46rem; color: var(--muted); margin-bottom: 1.25rem; }
.tag {
 display: inline-block;
 border: 1px solid var(--moss);
 color: var(--moss);
 border-radius: 2px;
 padding: 0 8px;
 font-size: .78rem;
 line-height: 1.7;
 background: transparent;
}
.kicker { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; }
.page-head {
 background: var(--ash);
 padding: 46px 0 36px;
 border-bottom: 1px solid var(--line);
}
.band { padding: 64px 0; }
.band-tight { padding: 22px 0; }
.band-linen { background: var(--linen); }
.band-ash { background: var(--ash); }
.band-paper { background: var(--paper); }
.band-dark { background: var(--walnut); color: var(--linen); }
.band-dark h2, .band-dark h3, .band-dark p { color: var(--linen); }
.band-dark .section-copy { color: #E7E1D6; }
.band h2::before {
 content: "";
 display: block;
 width: 36px;
 height: 2px;
 background: var(--moss);
 margin-bottom: 10px;
}
.band-dark h2::before { background: #C5D2C0; }
.band-dark .tag { color: #D5E0CF; border-color: #A3B39A; }
.filter-row {
 display: flex;
 flex-wrap: wrap;
 align-items: center;
 justify-content: space-between;
 gap: 12px 18px;
}
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
 min-height: 40px;
 padding: 0 14px;
 border: 1px solid var(--line);
 border-radius: 2px;
 background: var(--paper);
 color: var(--ink);
 font-weight: 500;
 cursor: pointer;
 transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.chip[aria-pressed="true"] {
 background: var(--walnut);
 color: var(--linen);
 border-color: var(--walnut);
}
.chip:hover, .chip:focus {
 border-color: var(--rose);
 color: var(--rose);
}
.chip[aria-pressed="true"]:hover, .chip[aria-pressed="true"]:focus {
 background: var(--rose);
 color: #fff;
 border-color: var(--rose);
}
.chip:active { transform: translateY(1px); }
.sort-now { margin: 0; color: var(--muted); font-size: .95rem; }
.sort-now strong { color: var(--ink); font-weight: 700; }
.list-layout {
 display: grid;
 grid-template-columns: minmax(0, 1.7fr) minmax(220px, .75fr);
 gap: 18px;
 align-items: start;
}
.dir-list { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.dir-card {
 display: grid;
 grid-template-columns: 104px minmax(0, 1fr);
 gap: 14px;
 align-items: stretch;
 background: var(--paper);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 padding: 12px;
 box-shadow: var(--shadow);
 color: inherit;
 transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.dir-card:hover { color: inherit; }
.dir-body { min-width: 0; }
.dir-body p { margin: 0; color: var(--muted); }
.dir-meta {
 display: flex;
 flex-wrap: wrap;
 gap: 8px 14px;
 align-items: center;
 margin-top: 8px;
 color: var(--rose);
 font-weight: 700;
 font-size: .92rem;
}
.dir-meta time { font-weight: 500; color: var(--muted); }
.frame {
 display: block;
 aspect-ratio: 4 / 5;
 overflow: hidden;
 border-radius: 2px;
 border: 1px solid var(--line);
 background: var(--ash);
}
.swatch {
 position: relative;
 display: flex;
 align-items: flex-end;
 width: 100%;
 height: 100%;
 padding: 10px;
 transition: transform .35s ease;
}
.swatch em {
 position: relative;
 z-index: 1;
 font-family: "Noto Serif SC", serif;
 font-style: normal;
 font-weight: 700;
 letter-spacing: .08em;
 color: rgba(251,248,243,.9);
}
.swatch::after {
 content: "";
 position: absolute;
 left: 10px;
 right: 10px;
 top: 10px;
 height: 2px;
 background: var(--moss);
}
.swatch-a { background: #8C4A4E; }
.swatch-b { background: #734044; }
.swatch-c { background: #3F2A24; }
.swatch-d { background: #5A3336; }
.swatch-e { background: #2C241C; }
.swatch-f { background: #6A3E42; }
.side-note {
 background: var(--paper);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 box-shadow: var(--shadow);
 padding: 18px 16px 8px;
 position: sticky;
 top: calc(var(--header) + 16px);
}
.side-note h3 { margin-bottom: .8rem; }
.stat-line {
 display: flex;
 justify-content: space-between;
 gap: 12px;
 padding: 10px 0;
 border-top: 1px solid var(--line);
}
.stat-line span { color: var(--muted); }
.stat-line b { font-family: "Noto Serif SC", serif; font-size: 1.15rem; }
.side-note .fine { color: var(--muted); font-size: .92rem; }
.point-strip {
 display: grid;
 grid-template-columns: repeat(4, minmax(0, 1fr));
 border: 1px solid var(--line);
 border-radius: var(--radius);
 background: var(--paper);
 overflow: hidden;
}
.point-strip article { padding: 18px 16px 8px; border-right: 1px solid var(--line); }
.point-strip article:last-child { border-right: 0; }
.point-strip p { color: var(--muted); }
.h-scroll {
 display: flex;
 gap: 14px;
 overflow-x: auto;
 padding: 2px 2px 12px;
 scroll-snap-type: x mandatory;
}
.h-card {
 flex: 0 0 220px;
 scroll-snap-align: start;
 display: flex;
 flex-direction: column;
 gap: 10px;
 background: var(--linen);
 border: 1px solid var(--line);
 border-radius: var(--radius);
 padding: 10px;
 color: inherit;
 box-shadow: var(--shadow);
 transition: transform .2s ease, border-color .2s ease;
}
.h-card .frame { aspect-ratio: 4 / 5; }
.h-card p { margin: 0; color: var(--muted); font-size: .95rem; }
.h-card:hover { color: inherit; }
.compare {
 display: grid;
 grid-template-columns: 1fr 1fr;
 border: 1px solid var(--line);
 border-radius: var(--radius);
 overflow: hidden;
 background: var(--paper);
}
.compare article { padding: 22px 20px 12px; }
.compare article + article { border-left: 1px solid var(--line); background: #F7F1E8; }
.compare p { color: var(--muted); }
.line-acc .accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; }
.line-acc .accordion-button {
 background: transparent;
 color: var(--ink);
 font-family: "Noto Serif SC", serif;
 font-size: 1.05rem;
 font-weight: 700;
 box-shadow: none;
 padding: 16px 0;
}
.line-acc .accordion-button:not(.collapsed) { color: var(--rose); background: transparent; }
.line-acc .accordion-button:focus { box-shadow: none; }
.line-acc .accordion-button::after { filter: grayscale(1); }
.line-acc .accordion-body { color: var(--muted); padding: 0 0 16px; }
.cta-wrap {
 display: flex;
 justify-content: space-between;
 align-items: center;
 gap: 18px 28px;
}
.cta-wrap p { margin: 0; max-width: 40rem; }
.band-dark .btn-cta:hover, .band-dark .btn-cta:focus {
 background: var(--linen);
 color: var(--walnut);
 border-color: var(--linen);
}
.site-footer {
 background: #2C241C;
 color: #E7E1D6;
 padding: 28px 0 34px;
}
.foot-row { display: flex; justify-content: space-between; gap: 18px; align-items: center; flex-wrap: wrap; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.site-footer a { color: #F4EFE6; }
.site-footer a:hover { color: #fff; }
.site-footer p { margin: 0; color: #CDBFB4; }
.site-footer strong { font-family: "Noto Serif SC", serif; letter-spacing: .04em; }
@media (min-width: 1200px) {
 .container { width: min(1120px, calc(100% - 80px)); }
}
@media (max-width: 1024px) {
 .list-layout, .point-strip { grid-template-columns: 1fr 1fr; }
 .side-note { position: static; }
 .point-strip article:nth-child(2) { border-right: 0; }
 .point-strip article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 768px) {
 .band { padding: 52px 0; }
 .compare, .point-strip { grid-template-columns: 1fr; }
 .compare article + article { border-left: 0; border-top: 1px solid var(--line); }
 .point-strip article { border-right: 0; border-bottom: 1px solid var(--line); }
 .point-strip article:last-child { border-bottom: 0; }
 .cta-wrap { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 576px) {
 .container { width: calc(100% - 24px); }
 .brand-full { display: none; }
 .brand-short { display: inline; }
 .page-head { padding: 32px 0 26px; }
 .dir-card { grid-template-columns: 84px minmax(0, 1fr); gap: 10px; padding: 10px; }
 .h-card { flex-basis: 78vw; }
}
@media (hover: hover) {
 .dir-card:hover, .h-card:hover {
  transform: translateY(-2px);
  border-color: var(--rose);
 }
 .dir-card:hover .swatch, .h-card:hover .swatch { transform: scale(1.04); }
}
@media (hover: none) {
 .dir-card:active, .h-card:active, .chip:active, .btn-cta:active {
  border-color: var(--rose);
  transform: translateY(1px);
 }
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}