/* roulang page: index */
:root {
  --ember: #e25b12;
  --warn: #ffb703;
  --bg: #141710;
  --bg-deep: #0d100c;
  --bg-alt: #10140c;
  --panel: #1c2218;
  --panel-2: #242b1e;
  --line: #3c4634;
  --ink: #d5d8cc;
  --muted: #9aa58a;
  --title: #f4f5ee;
  --glow: #d6f25c;
  --radius: 3px;
  --shadow: 4px 4px 0 rgba(0, 0, 0, .5);
  --pad: 84px;
  --bs-body-bg: #141710;
  --bs-body-color: #d5d8cc;
  --bs-primary: #e25b12;
  --bs-link-color: #ffb703;
  --bs-link-hover-color: #e25b12;
  --bs-border-radius: 3px;
  --bs-border-color: #3c4634;
  --bs-emphasis-color: #f4f5ee;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
  background-color: var(--bg);
  background-image: repeating-linear-gradient(-18deg, rgba(214, 242, 92, .035) 0 1px, transparent 1px 14px);
}
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }
a { color: var(--warn); }
p { margin: 0 0 0.95em; }
h1, h2, h3, .brand-name, .btn, .num, .step-no {
  font-family: "Noto Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
}
h1 { font-size: clamp(1.85rem, 3.4vw, 2.7rem); line-height: 1.25; color: var(--title); margin: 0 0 .7rem; }
h2 { font-size: clamp(1.35rem, 2.2vw, 1.72rem); line-height: 1.35; color: var(--title); margin: 0 0 .55rem; }
h3 { font-size: 1.08rem; line-height: 1.45; color: var(--title); margin: 0 0 .4rem; }
::selection { background: var(--ember); color: #141710; }
:focus-visible { outline: 2px solid var(--warn); outline-offset: 2px; }
.skip {
  position: absolute; left: 12px; top: -40px; z-index: 2000;
  background: var(--ember); color: #141710; padding: 6px 12px; font-weight: 700; text-decoration: none;
}
.skip:focus { top: 8px; }
.site-header {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line);
  z-index: 1030;
}
.navbar { padding: 0; }
.nav-bar { min-height: 72px; display: flex; align-items: center; position: relative; }
.navbar-toggler {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 10px;
  margin-right: 10px;
  box-shadow: none;
}
.navbar-toggler:focus { box-shadow: none; }
.toggler-lines, .toggler-lines::before, .toggler-lines::after {
  display: block; width: 18px; height: 2px; background: var(--warn); position: relative;
}
.toggler-lines::before, .toggler-lines::after { content: ""; position: absolute; left: 0; }
.toggler-lines::before { top: -6px; }
.toggler-lines::after { top: 6px; }
.brand {
  display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--title);
}
.brand:hover { color: var(--warn); }
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: .02em; white-space: nowrap; }
.tick {
  width: 16px; height: 2px; background: var(--ember); display: inline-block; flex: 0 0 auto;
  box-shadow: 0 -5px 0 var(--line), 0 5px 0 var(--line);
}
.nav-side { list-style: none; display: flex; gap: 22px; margin: 0; padding: 0; }
.nav-side a {
  position: relative; color: var(--ink); text-decoration: none; font-weight: 700;
  font-size: 15px; padding: 10px 0; display: inline-block;
}
.nav-side a:hover, .nav-side a:focus-visible { color: var(--warn); }
.nav-side a.active { color: var(--title); }
.nav-side a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 2px; background: var(--ember);
}
@media (min-width: 992px) {
  .navbar-expand-lg .navbar-collapse#mainNav { display: block !important; }
  .nav-grid {
    display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; width: 100%; gap: 18px;
  }
  .nav-left { justify-content: flex-end; }
  .nav-right { justify-content: flex-start; }
}
@media (max-width: 991.98px) {
  .nav-bar { flex-wrap: wrap; padding: 10px 0; }
  .brand-name { font-size: 15px; }
  .navbar-collapse {
    position: absolute; top: 100%; left: 0; right: 0; background: #141710;
    border-bottom: 1px solid var(--line); padding: 6px 18px 14px; z-index: 30;
  }
  .nav-grid { display: block; }
  .nav-side { flex-direction: column; gap: 0; }
  .nav-side a { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-side a.active::after { bottom: 8px; width: 36px; right: auto; }
}
@media (max-width: 520px) {
  .brand-name { font-size: 13px; letter-spacing: 0; }
  .tick { width: 10px; }
}
.band { padding: var(--pad) 0; position: relative; border-top: 1px solid rgba(60, 70, 52, .9); }
.band-alt { background: var(--bg-alt); }
.band-tight { padding: 28px 0; }
.hero { border-top: 0; padding-top: 72px; padding-bottom: 78px; }
.section-intro { max-width: 46rem; color: var(--muted); margin: 0 0 1.35rem; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--warn); font-weight: 700; font-size: 13px; letter-spacing: .08em; margin-bottom: 12px;
}
.age {
  display: inline-block; background: var(--ember); color: #141710; font-weight: 700;
  font-size: 12px; line-height: 1; padding: 4px 7px; border-radius: 2px;
}
.lead-sub { font-size: 1.08rem; color: var(--ink); margin-bottom: .85rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.btn {
  --bs-btn-border-radius: 3px;
  border-radius: 3px !important;
  font-weight: 700;
  padding: 12px 28px;
  border: 1px solid transparent;
  box-shadow: var(--shadow);
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  text-decoration: none;
  line-height: 1.2;
}
.btn:hover { transform: translate(2px, -2px); }
.btn:active { transform: translate(1px, 1px); }
.btn-amber { background: var(--ember); color: #141710; border-color: var(--ember); }
.btn-amber:hover, .btn-amber:focus { background: var(--warn); color: #141710; border-color: var(--warn); }
.btn-line { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-line:hover, .btn-line:focus { background: transparent; color: var(--warn); border-color: var(--ember); }
.info-board {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 22px 18px;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}
.reticle {
  position: absolute; top: 12px; right: 16px; width: 16px; height: 16px; border: 1px solid var(--line);
}
.reticle::before, .reticle::after { content: ""; position: absolute; background: var(--ember); }
.reticle::before { left: 50%; top: -3px; bottom: -3px; width: 1px; }
.reticle::after { top: 50%; left: -3px; right: -3px; height: 1px; }
.info-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; color: var(--title); font-weight: 700; }
.slot {
  display: grid; grid-template-columns: 72px 1fr auto; gap: 8px; align-items: center;
  padding: 10px 0; border-top: 1px solid var(--line); color: var(--ink); text-decoration: none;
}
.slot:hover { color: var(--warn); }
.slot time { color: var(--glow); font-variant-numeric: tabular-nums; font-size: 14px; }
.slot small { color: var(--muted); }
.resume { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.resume-head { display: flex; justify-content: space-between; color: var(--title); font-weight: 700; }
.resume-bar { height: 6px; background: #0d100c; border: 1px solid var(--line); margin: 8px 0; }
.resume-bar span { display: block; height: 100%; width: 68%; background: var(--ember); }
.resume small { color: var(--muted); }
.slab {
  display: flex; flex-direction: column; height: 100%;
  background: var(--panel); color: var(--ink); text-decoration: none;
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  overflow: hidden; transition: border-color .18s ease, transform .18s ease;
}
.slab:hover { border-color: var(--ember); transform: translateY(-2px); color: var(--ink); }
.poster {
  position: relative; height: 92px;
  background: linear-gradient(160deg, #2a2416 0%, #1c2218 58%, #2c2418 100%);
  border-bottom: 1px solid var(--line);
}
.slab-lg .poster { height: 168px; }
.poster .tag { position: absolute; left: 14px; bottom: 12px; }
.slab-body { padding: 22px 24px 24px; }
.tag {
  display: inline-block; border: 1px solid var(--ember); color: var(--warn);
  font-size: 12px; font-weight: 700; letter-spacing: .06em; padding: 2px 8px; border-radius: 2px; background: rgba(20, 23, 16, .72);
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--glow); display: inline-block; margin-right: 6px; }
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line); background: var(--panel); box-shadow: var(--shadow);
}
.stat { padding: 22px 20px 20px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.num { font-size: 2rem; line-height: 1.1; color: var(--warn); font-variant-numeric: tabular-nums; letter-spacing: .04em; }
.stat b { display: block; color: var(--title); margin: 6px 0 4px; }
.stat span { color: var(--muted); font-size: 14px; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); }
.step {
  position: relative; background: var(--panel); border: 1px solid var(--line);
  margin-right: 16px; padding: 22px 26px 22px 28px; min-height: 180px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 50%, calc(100% - 16px) 100%, 0 100%, 16px 50%);
}
.step-no { color: var(--ember); font-size: 1.25rem; font-variant-numeric: tabular-nums; display: block; margin-bottom: 6px; }
.step p { color: var(--muted); margin: 0; }
.devices { display: grid; grid-template-columns: 1.05fr .9fr 1.15fr; gap: 14px; align-items: end; }
.device {
  background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow);
  padding: 22px 24px; border-radius: var(--radius);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}
.device-phone { min-height: 250px; }
.device-pad { min-height: 330px; }
.device-desk { min-height: 210px; }
.device .screen {
  margin-top: 16px; border: 1px solid var(--line); background: #10140c; min-height: 72px; padding: 10px 12px; color: var(--muted); font-size: 14px;
}
.wall-side { display: grid; gap: 14px; }
.ticks { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.tick-item { position: relative; padding: 0 0 22px 22px; }
.tick-item::before {
  content: ""; position: absolute; left: -6px; top: 8px; width: 10px; height: 10px; background: var(--ember);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}
.when { color: var(--glow); font-variant-numeric: tabular-nums; font-size: 14px; display: block; }
.tick-item a { color: var(--title); font-weight: 700; text-decoration: none; }
.tick-item a:hover { color: var(--warn); }
.tick-item p { color: var(--muted); margin: 4px 0 0; }
.news { list-style: none; margin: 0; padding: 0; }
.news li { border-bottom: 1px solid var(--line); }
.news a {
  display: grid; grid-template-columns: 72px 1fr; gap: 8px 14px; padding: 14px 4px;
  text-decoration: none; color: inherit;
}
.news a:hover { color: var(--warn); }
.news time { color: var(--glow); font-variant-numeric: tabular-nums; }
.news strong { display: block; color: var(--title); font-weight: 700; }
.news span { grid-column: 2; color: var(--muted); }
.more {
  display: inline-block; margin-top: 16px; color: var(--warn); font-weight: 700; text-decoration: none;
  border-bottom: 2px solid var(--ember); padding-bottom: 2px;
  transition: color .18s ease, transform .18s ease;
}
.more:hover { color: var(--ember); transform: translate(2px, -2px); }
.gate {
  display: block; min-height: 230px; padding: 26px 26px 22px; text-decoration: none; color: var(--ink);
  background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: border-color .18s ease, transform .18s ease;
}
.gate:hover { border-color: var(--ember); transform: translateY(-2px); color: var(--ink); }
.gate-a { clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%); }
.gate-b { clip-path: polygon(22px 0, 100% 0, 100% 100%, 0 100%, 0 22px); min-height: 260px; }
.gate p { color: var(--muted); }
.marquee { overflow: hidden; border: 1px solid var(--line); background: var(--panel); box-shadow: var(--shadow); }
.marquee-track { display: flex; gap: 28px; width: max-content; padding: 16px 0; animation: slide 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.chan {
  color: var(--title); font-weight: 700; letter-spacing: .08em; padding: 0 8px;
  border-left: 3px solid var(--ember);
}
@keyframes slide { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.quote {
  background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow);
  padding: 22px 24px; margin-bottom: 14px; border-radius: var(--radius);
}
.quote p { color: var(--ink); margin-bottom: 8px; }
.quote a { color: var(--warn); font-weight: 700; text-decoration: none; }
.quote a:hover { color: var(--ember); }
.quote-shift { margin-top: 0; }
.accordion-item {
  background: var(--panel); border: 1px solid var(--line) !important; border-radius: 3px !important;
  margin-bottom: 10px; box-shadow: var(--shadow); overflow: hidden;
}
.accordion-button {
  background: var(--panel); color: var(--title); font-weight: 700; box-shadow: none !important;
  border-radius: 0 !important; padding: 16px 20px;
}
.accordion-button:not(.collapsed) { background: var(--panel-2); color: var(--warn); }
.accordion-button:focus { box-shadow: none; border-color: var(--ember); }
.accordion-button::after { filter: grayscale(1) brightness(2.2); }
.accordion-body { background: #161b13; color: var(--muted); line-height: 1.85; padding: 4px 20px 18px; }
.assure { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.assure-item {
  display: flex; gap: 10px; align-items: flex-start;
  border: 1px solid var(--line); background: var(--bg-deep); padding: 14px 12px; border-radius: var(--radius);
}
.assure-item svg { flex: 0 0 auto; margin-top: 4px; }
.assure-item strong { display: block; color: var(--title); font-size: 15px; }
.assure-item span { color: var(--muted); font-size: 13px; line-height: 1.6; }
.contact-box {
  background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow);
  padding: 26px 24px; border-radius: var(--radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}
.form-label { color: var(--title); font-weight: 700; margin-bottom: 6px; }
.form-control {
  background: #10140c; border: 1px solid var(--line); color: var(--ink);
  border-radius: 3px; padding: 12px 12px; box-shadow: none;
}
.form-control:focus { background: #10140c; color: var(--ink); border-color: var(--ember); box-shadow: none; }
.form-control::placeholder { color: #6e7864; }
.rule-list { list-style: none; padding: 0; margin: 12px 0 0; }
.rule-list li { position: relative; padding-left: 14px; color: var(--muted); margin-bottom: 6px; }
.rule-list li::before { content: ""; position: absolute; left: 0; top: .7em; width: 6px; height: 6px; background: var(--glow); }
.thanks {
  border: 1px solid var(--ember); background: var(--panel-2); color: var(--warn);
  padding: 18px; font-weight: 700;
}
[hidden] { display: none !important; }
.site-footer { background: var(--bg-deep); border-top: 1px solid var(--line); padding: 28px 0 22px; }
.foot-brand { font-weight: 700; color: var(--title); font-size: 18px; margin-bottom: 8px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 10px; }
.foot-links a { color: var(--muted); text-decoration: none; font-weight: 700; }
.foot-links a:hover { color: var(--warn); }
.foot-legal { color: var(--muted); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; }
@media (max-width: 991.98px) {
  :root { --pad: 48px; }
  .hero { padding-top: 46px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .stat:nth-child(2) { border-right: 0; }
  .steps { grid-template-columns: 1fr 1fr; gap: 12px; }
  .step { clip-path: none; margin-right: 0; }
  .devices { grid-template-columns: 1fr 1fr; align-items: stretch; }
  .device-desk { grid-column: 1 / -1; }
  .quote-shift { margin-top: 0; }
  .assure { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 992px) {
  .quote-shift { margin-top: 34px; }
}
@media (max-width: 767.98px) {
  :root { --pad: 44px; }
  .steps, .devices, .assure, .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: 0; }
  .device-desk { grid-column: auto; }
  .news a { grid-template-columns: 64px 1fr; }
  .slot { grid-template-columns: 64px 1fr; }
  .slot small { grid-column: 2; }
  .hero-actions .btn { width: 100%; text-align: center; }
}
@media (max-width: 520px) {
  .slab-body, .device, .quote, .contact-box { padding: 18px 16px; }
  .info-board { padding: 16px; }
  .gate { min-height: 0; }
  .num { font-size: 1.7rem; }
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
  .btn, .slab, .gate, .more { transition: none; }
}

/* roulang page: category2 */
:root {
 --ember: #e25b12;
 --warn: #ffb703;
 --bg: #141710;
 --bg-deep: #0d100c;
 --bg-alt: #10140c;
 --panel: #1c2218;
 --panel-2: #242b1e;
 --line: #3c4634;
 --ink: #d5d8cc;
 --muted: #9aa58a;
 --title: #f4f5ee;
 --glow: #d6f25c;
 --radius: 3px;
 --shadow: 4px 4px 0 rgba(0, 0, 0, .5);
 --pad: 84px;
 --bs-body-bg: #141710;
 --bs-body-color: #d5d8cc;
 --bs-primary: #e25b12;
 --bs-link-color: #ffb703;
 --bs-link-hover-color: #e25b12;
 --bs-border-radius: 3px;
 --bs-border-color: #3c4634;
 --bs-emphasis-color: #f4f5ee;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 font-family: "Noto Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
 font-weight: 400;
 font-size: 16px;
 line-height: 1.85;
 color: var(--ink);
 background-color: var(--bg);
 background-image: repeating-linear-gradient(-18deg, rgba(214, 242, 92, .035) 0 1px, transparent 1px 14px);
}
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }
a { color: var(--warn); text-decoration-thickness: 1px; }
a:focus-visible, button:focus-visible, .btn:focus-visible, .accordion-button:focus-visible {
 outline: 2px solid var(--ember);
 outline-offset: 2px;
}
h1, h2, h3, .brand-name, .btn, .num, .step-no {
 font-family: "Noto Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
 font-weight: 700;
 color: var(--title);
}
h1 { font-size: clamp(1.7rem, 2.4vw, 2.35rem); line-height: 1.25; margin: 10px 0 12px; letter-spacing: .01em; }
h2 { font-size: clamp(1.28rem, 1.7vw, 1.65rem); line-height: 1.35; margin: 0 0 14px; }
h3 { font-size: 1.05rem; line-height: 1.45; margin: 0 0 8px; }
p { margin: 0 0 .95em; }
.site-header { background: var(--bg-deep); border-bottom: 1px solid var(--line); z-index: 1030; }
.navbar { padding: 0; }
.nav-bar { min-height: 72px; display: flex; align-items: center; position: relative; }
.navbar-toggler {
 border: 1px solid var(--line);
 border-radius: var(--radius);
 padding: 8px 10px;
 margin-right: 10px;
 background: transparent;
 box-shadow: none;
}
.navbar-toggler:focus { box-shadow: none; }
.toggler-lines, .toggler-lines::before, .toggler-lines::after {
 display: block; width: 18px; height: 2px; background: var(--warn); position: relative;
}
.toggler-lines::before, .toggler-lines::after { content: ""; position: absolute; left: 0; }
.toggler-lines::before { top: -6px; }
.toggler-lines::after { top: 6px; }
.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: var(--title); }
.brand:hover { color: var(--warn); }
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: .02em; white-space: nowrap; }
.tick { width: 18px; height: 2px; background: var(--ember); display: inline-block; position: relative; }
.tick::after { content: ""; position: absolute; right: -1px; top: -4px; width: 2px; height: 10px; background: var(--glow); }
.nav-side { list-style: none; display: flex; gap: 22px; margin: 0; padding: 0; }
.nav-side a {
 position: relative; color: var(--ink); text-decoration: none; font-weight: 700;
 font-size: 15px; padding: 10px 0; display: inline-block;
}
.nav-side a:hover, .nav-side a:focus-visible { color: var(--warn); }
.nav-side a.active { color: var(--title); }
.nav-side a.active::after {
 content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 2px; background: var(--ember);
}
.navbar-collapse { display: none; }
.navbar-collapse.show { display: block; }
.nav-grid { display: block; }
.nav-side { flex-direction: column; gap: 0; }
.nav-side a { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
.nav-side a.active::after { bottom: 8px; width: 36px; right: auto; }
.navbar-collapse {
 position: absolute; top: 100%; left: 0; right: 0; background: #141710;
 border-bottom: 1px solid var(--line); padding: 6px 18px 14px; z-index: 30;
}
.nav-bar { flex-wrap: wrap; padding: 10px 0; }
@media (min-width: 992px) {
 .navbar-expand-lg .navbar-collapse { display: block !important; position: static; border: 0; padding: 0; background: transparent; }
 .nav-grid { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; width: 100%; gap: 18px; }
 .nav-left { justify-content: flex-end; }
 .nav-right { justify-content: flex-start; }
 .nav-side { flex-direction: row; gap: 22px; }
 .nav-side a { display: inline-block; padding: 10px 0; border-bottom: 0; }
 .nav-side a.active::after { width: auto; right: 0; bottom: 4px; }
 .nav-bar { flex-wrap: nowrap; padding: 0; }
 .brand-name { font-size: 18px; }
 .navbar-toggler { display: none; }
}
main { display: block; }
.section { padding: var(--pad) 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-deep { background: var(--bg-deep); }
.page-head { padding: 36px 0 32px; border-bottom: 1px solid var(--line); background: var(--bg-deep); }
.head-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 28px 48px; align-items: end; }
.head-sum { color: var(--ink); font-size: 1.05rem; margin: 0; line-height: 1.85; padding-bottom: 6px; }
.status-row { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 8px; }
.meter {
 display: inline-flex; align-items: baseline; gap: 8px;
 border: 1px solid var(--line); background: var(--panel); padding: 4px 10px; border-radius: 2px;
 box-shadow: var(--shadow);
}
.meter b { color: var(--warn); font-variant-numeric: tabular-nums; font-weight: 700; }
.meter span { color: var(--muted); font-size: 13px; }
.tag {
 display: inline-block; border: 1px solid var(--ember); color: var(--warn);
 font-size: 12px; font-weight: 700; letter-spacing: .06em; padding: 2px 8px; border-radius: 2px;
 background: rgba(20, 23, 16, .72);
}
.age-pill { margin-right: 8px; }
.section-kicker { color: var(--glow); font-size: 12px; font-weight: 700; letter-spacing: .14em; margin-bottom: 6px; }
.lead-line { color: var(--muted); max-width: 40rem; margin: 0 0 22px; }
.topic-wall {
 display: grid;
 grid-template-columns: 1.35fr .85fr .95fr;
 grid-template-areas:
  "a b c"
  "a d e"
  "f f e";
 gap: 16px;
}
.topic-card {
 display: flex; flex-direction: column; justify-content: space-between;
 min-height: 168px; padding: 22px 24px;
 background: var(--panel); color: inherit; text-decoration: none;
 border: 1px solid var(--line); border-radius: var(--radius);
 box-shadow: var(--shadow);
 clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
 transition: border-color .18s ease, transform .18s ease;
}
.topic-card:hover { border-color: var(--ember); transform: translateY(-2px); color: inherit; }
.topic-card small { color: var(--glow); font-weight: 700; letter-spacing: .04em; }
.topic-card p { color: var(--muted); margin: 8px 0 14px; }
.topic-card .go { color: var(--warn); font-weight: 700; }
.card-a { grid-area: a; min-height: 360px; background: linear-gradient(160deg, #24301c 0%, #1c2218 48%); }
.card-b { grid-area: b; }
.card-c { grid-area: c; background: var(--panel-2); }
.card-d { grid-area: d; min-height: 180px; }
.card-e { grid-area: e; min-height: 280px; }
.card-f { grid-area: f; min-height: 150px; flex-direction: row; align-items: flex-end; gap: 24px; }
.card-f p { margin-bottom: 0; }
.plate {
 height: 92px; margin-bottom: 16px; border: 1px solid var(--line);
 background:
  linear-gradient(115deg, rgba(226, 91, 18, .35), transparent 42%),
  repeating-linear-gradient(90deg, rgba(214, 242, 92, .16) 0 1px, transparent 1px 18px),
  #12160f;
 clip-path: polygon(0 12px, 12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}
.card-a .plate { height: 150px; }
.compare { display: grid; grid-template-columns: 1.25fr .85fr; gap: 18px; align-items: stretch; }
.cmp {
 background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
 box-shadow: var(--shadow); padding: 24px 26px; position: relative;
}
.cmp-hi { clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%); min-height: 320px; }
.cmp-mid { margin-top: 36px; background: var(--panel-2); min-height: 260px; }
.cmp .lvl { font-variant-numeric: tabular-nums; color: var(--warn); font-size: 28px; line-height: 1; margin: 8px 0 12px; }
.cmp ul { margin: 0; padding: 0; list-style: none; }
.cmp li { position: relative; padding: 8px 0 8px 16px; border-top: 1px solid var(--line); color: var(--ink); }
.cmp li::before { content: ""; position: absolute; left: 0; top: 16px; width: 7px; height: 7px; background: var(--ember); }
.scene-board { display: grid; grid-template-columns: 1.1fr .9fr .9fr; gap: 16px; align-items: start; }
.scene {
 background: var(--bg-deep); border: 1px solid var(--line); padding: 22px 22px 18px;
 box-shadow: var(--shadow); border-radius: var(--radius);
}
.scene:nth-child(1) { min-height: 250px; clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%); }
.scene:nth-child(2) { min-height: 300px; margin-top: 28px; }
.scene:nth-child(3) { min-height: 210px; margin-top: 64px; background: var(--panel); }
.scene .num { color: var(--ember); font-variant-numeric: tabular-nums; font-size: 13px; letter-spacing: .08em; }
.rail-head { display: flex; justify-content: space-between; gap: 20px; align-items: flex-end; margin-bottom: 8px; }
.rail-head p { margin: 0; color: var(--muted); max-width: 28rem; }
.news-rail { border-top: 1px solid var(--line); }
.news-rail a {
 display: grid; grid-template-columns: 92px 1fr auto; gap: 12px 18px; align-items: center;
 padding: 16px 4px; border-bottom: 1px solid var(--line); text-decoration: none; color: inherit;
}
.news-rail a:hover { color: var(--warn); }
.news-rail time { color: var(--glow); font-variant-numeric: tabular-nums; font-weight: 700; font-size: 14px; }
.news-rail strong { color: var(--title); font-weight: 700; }
.news-rail em { font-style: normal; color: var(--ember); font-weight: 700; }
.accordion { --bs-accordion-bg: transparent; --bs-accordion-border-color: var(--line); }
.accordion-item {
 background: var(--panel); border: 1px solid var(--line) !important; border-radius: 3px !important;
 margin-bottom: 10px; box-shadow: var(--shadow); overflow: hidden;
}
.accordion-button {
 background: var(--panel); color: var(--title); font-weight: 700; box-shadow: none !important;
 border-radius: 0 !important; padding: 16px 20px;
}
.accordion-button:not(.collapsed) { background: var(--panel-2); color: var(--warn); }
.accordion-button:focus { box-shadow: none; border-color: var(--ember); }
.accordion-button::after { filter: grayscale(1) brightness(2.2); }
.accordion-body { background: #161b13; color: var(--muted); line-height: 1.85; padding: 4px 20px 18px; }
.end-bar {
 display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap;
 background: var(--panel); border: 1px solid var(--line); padding: 22px 24px;
 box-shadow: var(--shadow);
 clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}
.end-bar p { margin: 0; color: var(--muted); }
.end-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
 --bs-btn-border-radius: 3px;
 border-radius: 3px !important;
 font-weight: 700;
 padding: 12px 28px;
 border: 1px solid transparent;
 box-shadow: var(--shadow);
 transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
 text-decoration: none;
 line-height: 1.2;
}
.btn:hover { transform: translate(2px, -2px); }
.btn:active { transform: translate(1px, 1px); }
.btn-amber { background: var(--ember); color: #141710; border-color: var(--ember); }
.btn-amber:hover, .btn-amber:focus { background: var(--warn); color: #141710; border-color: var(--warn); }
.btn-line { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-line:hover, .btn-line:focus { background: transparent; color: var(--warn); border-color: var(--ember); }
.site-footer { background: #090c08; border-top: 1px solid var(--line); padding: 28px 0 32px; }
.foot-brand { font-weight: 700; color: var(--title); font-size: 18px; margin-bottom: 10px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 12px; }
.foot-links a { color: var(--muted); text-decoration: none; font-weight: 700; }
.foot-links a:hover { color: var(--warn); }
.foot-legal { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; color: var(--muted); font-size: 14px; }
.age {
 display: inline-flex; align-items: center; justify-content: center;
 min-width: 36px; height: 22px; padding: 0 6px; border: 1px solid var(--ember);
 color: var(--warn); font-weight: 700; font-size: 12px; border-radius: 2px;
}
@media (max-width: 991.98px) {
 :root { --pad: 48px; }
 .head-grid, .compare, .scene-board, .topic-wall { grid-template-columns: 1fr 1fr; }
 .topic-wall { grid-template-areas: "a b" "a c" "d e" "f f"; }
 .card-f { flex-direction: column; align-items: flex-start; }
 .cmp-mid, .scene:nth-child(2), .scene:nth-child(3) { margin-top: 0; }
 .scene:nth-child(3) { grid-column: 1 / -1; }
 .brand-name { font-size: 15px; }
}
@media (max-width: 767.98px) {
 :root { --pad: 44px; }
 .page-head { padding: 28px 0 24px; }
 .head-grid, .compare, .scene-board, .topic-wall { grid-template-columns: 1fr; }
 .topic-wall { grid-template-areas: "a" "b" "c" "d" "e" "f"; }
 .card-a, .card-e, .card-d, .scene, .cmp-hi, .cmp-mid { min-height: 0; }
 .news-rail a { grid-template-columns: 72px 1fr; }
 .news-rail em { grid-column: 2; }
 .rail-head { flex-direction: column; align-items: flex-start; }
 .end-bar { align-items: flex-start; }
}
@media (max-width: 520px) {
 .brand-name { font-size: 13px; letter-spacing: 0; }
 h1 { font-size: 1.45rem; }
 .btn { padding: 11px 18px; }
 .meter { width: 100%; justify-content: space-between; }
}

/* roulang page: category1 */
:root {
  --ember: #e25b12;
  --warn: #ffb703;
  --bg: #141710;
  --bg-deep: #0d100c;
  --bg-alt: #10140c;
  --panel: #1c2218;
  --panel-2: #242b1e;
  --line: #3c4634;
  --ink: #d5d8cc;
  --muted: #9aa58a;
  --title: #f4f5ee;
  --glow: #d6f25c;
  --radius: 3px;
  --shadow: 4px 4px 0 rgba(0, 0, 0, .5);
  --pad: 84px;
  --bs-body-bg: #141710;
  --bs-body-color: #d5d8cc;
  --bs-primary: #e25b12;
  --bs-link-color: #ffb703;
  --bs-link-hover-color: #e25b12;
  --bs-border-radius: 3px;
  --bs-border-color: #3c4634;
  --bs-emphasis-color: #f4f5ee;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
  background-color: var(--bg);
  background-image: repeating-linear-gradient(-18deg, rgba(214, 242, 92, .035) 0 1px, transparent 1px 14px);
}
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }
a { color: var(--warn); text-decoration: none; }
a:hover { color: var(--ember); }
h1, h2, h3, .brand-name, .btn, .num, .step-no {
  font-family: "Noto Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  color: var(--title);
  line-height: 1.35;
}
h1 { font-size: clamp(30px, 4vw, 44px); margin: 0 0 10px; }
h2 { font-size: clamp(22px, 2.4vw, 30px); margin: 0 0 12px; }
h3 { font-size: 18px; margin: 0 0 6px; }
p { margin: 0 0 .95em; }
::selection { background: var(--ember); color: #141710; }
:focus-visible { outline: 2px solid var(--ember); outline-offset: 2px; }
.site-header {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line);
  z-index: 1030;
}
.navbar { padding: 0; }
.nav-bar { min-height: 72px; display: flex; align-items: center; position: relative; }
.navbar-toggler {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 10px;
  margin-right: 10px;
  box-shadow: none;
  background: transparent;
}
.navbar-toggler:focus { box-shadow: none; }
.toggler-lines {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  box-shadow: 0 6px 0 var(--ink), 0 -6px 0 var(--ink);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--title);
}
.brand:hover { color: var(--warn); }
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: .02em; white-space: nowrap; }
.tick { width: 14px; height: 2px; background: var(--ember); display: inline-block; flex: 0 0 auto; }
.nav-side { list-style: none; display: flex; gap: 22px; margin: 0; padding: 0; }
.nav-side a {
  position: relative;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  padding: 10px 0;
  display: inline-block;
}
.nav-side a:hover, .nav-side a:focus-visible { color: var(--warn); }
.nav-side a.active { color: var(--title); }
.nav-side a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 2px;
  background: var(--ember);
}
.nav-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  gap: 18px;
}
.nav-left { justify-content: flex-end; }
.nav-right { justify-content: flex-start; }
.page-head {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line);
  padding: 28px 0 26px;
}
.head-row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, .8fr);
  gap: 28px;
  align-items: end;
}
.kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  color: var(--warn);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .08em;
}
.kicker::before { content: ""; width: 22px; height: 2px; background: var(--ember); }
.head-copy p { color: var(--muted); margin: 0; max-width: 40rem; }
.scale {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
}
.scale li {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 10px 10px 8px;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  min-height: 74px;
}
.scale .num, .rhythm .num {
  display: block;
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  line-height: 1;
  color: var(--glow);
  margin-bottom: 6px;
}
.scale li span:last-child, .rhythm-item span:last-child {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}
.age {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 26px;
  padding: 0 6px;
  border: 1px solid var(--ember);
  color: #141710;
  background: var(--ember);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .04em;
  border-radius: 2px;
}
.scale .age { margin-bottom: 8px; }
.band { padding: var(--pad) 0; }
.band-alt { background: var(--bg-alt); }
.band-deep { background: var(--bg-deep); }
.split-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 18px;
  margin-bottom: 22px;
  border-left: 3px solid var(--ember);
  padding-left: 14px;
}
.split-head p { margin: 0; color: var(--muted); max-width: 28rem; }
.update-list { display: flex; flex-direction: column; gap: 12px; }
.update-row {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: border-color .18s ease, transform .18s ease;
}
.update-row:hover { border-color: var(--ember); transform: translateY(-2px); }
.row-link {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  color: inherit;
  min-height: 112px;
}
.row-link:hover { color: inherit; }
.poster {
  position: relative;
  min-height: 112px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 12px;
  background:
    repeating-linear-gradient(90deg, rgba(214, 242, 92, .05) 0 1px, transparent 1px 10px),
    linear-gradient(160deg, #2c2418 0%, #1c2218 58%, #3d2614 100%);
  border-right: 1px solid var(--line);
}
.poster b {
  font-size: 30px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--title);
}
.poster em {
  font-style: normal;
  color: var(--warn);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .08em;
}
.poster-b { background: linear-gradient(165deg, #24301c, #141a12 70%); }
.poster-c { background: linear-gradient(165deg, #3a2814, #1c2218 65%); }
.poster-d { background: linear-gradient(165deg, #1d2618, #3a3014 140%); }
.row-main { padding: 16px 18px 14px; }
.row-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 6px;
}
.tag {
  display: inline-block;
  border: 1px solid var(--ember);
  color: var(--warn);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 2px 8px;
  border-radius: 2px;
  background: rgba(20, 23, 16, .72);
}
.time { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.row-main p { margin: 0; color: var(--muted); }
.more-band { padding: 8px 0 36px; background: var(--bg); }
.btn {
  --bs-btn-border-radius: 3px;
  border-radius: 3px !important;
  font-weight: 700;
  padding: 12px 28px;
  border: 1px solid transparent;
  box-shadow: var(--shadow);
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  text-decoration: none;
  line-height: 1.2;
  display: inline-block;
}
.btn:hover { transform: translate(2px, -2px); }
.btn:active { transform: translate(1px, 1px); }
.btn:focus { box-shadow: none; }
.btn-amber { background: var(--ember); color: #141710; border-color: var(--ember); }
.btn-amber:hover, .btn-amber:focus { background: var(--warn); color: #141710; border-color: var(--warn); }
.btn-line { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-line:hover, .btn-line:focus { background: transparent; color: var(--warn); border-color: var(--ember); }
.rhythm {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}
.rhythm-item {
  padding: 22px 18px;
  border-right: 1px solid var(--line);
}
.rhythm-item:last-child { border-right: 0; }
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 2px;
  background: var(--panel);
  font-weight: 700;
  font-size: 14px;
  box-shadow: var(--shadow);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}
.chip.is-on, .chip:hover, .chip:focus-visible {
  border-color: var(--ember);
  color: var(--warn);
  background: var(--panel-2);
}
.trio {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  gap: 14px;
  align-items: stretch;
}
.article-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 180px;
  padding: 22px 22px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: inherit;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: border-color .18s ease, transform .18s ease;
}
.article-card:hover { border-color: var(--ember); transform: translateY(-2px); color: inherit; }
.article-card p { color: var(--muted); margin: 0 0 16px; }
.go { color: var(--warn); font-weight: 700; }
.article-card:first-child { background: var(--panel-2); min-height: 220px; }
.accordion-item {
  background: var(--panel);
  border: 1px solid var(--line) !important;
  border-radius: 3px !important;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.accordion-button {
  background: var(--panel);
  color: var(--title);
  font-weight: 700;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 16px 20px;
}
.accordion-button:not(.collapsed) { background: var(--panel-2); color: var(--warn); }
.accordion-button:focus { box-shadow: none; border-color: var(--ember); }
.accordion-button::after { filter: grayscale(1) brightness(2.2); }
.accordion-body { background: #161b13; color: var(--muted); line-height: 1.85; padding: 4px 20px 18px; }
.cta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 28px 26px;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}
.cta-row p { margin: 0; color: var(--muted); }
.site-footer {
  background: #0a0d09;
  border-top: 1px solid var(--line);
  padding: 28px 0 26px;
}
.foot-brand {
  font-weight: 700;
  color: var(--title);
  font-size: 18px;
  margin-bottom: 10px;
}
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 12px; }
.foot-links a { color: var(--muted); font-weight: 700; }
.foot-links a:hover { color: var(--warn); }
.foot-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  color: var(--muted);
  font-size: 14px;
}
.form-control:focus {
  border-color: var(--ember);
  box-shadow: none;
  background: var(--panel);
  color: var(--ink);
}
@media (max-width: 991.98px) {
  :root { --pad: 48px; }
  .brand-name { font-size: 15px; }
  .nav-bar { flex-wrap: wrap; padding: 10px 0; }
  .navbar-collapse {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #141710;
    border-bottom: 1px solid var(--line);
    padding: 6px 18px 14px;
    z-index: 30;
  }
  .nav-grid { display: block; }
  .nav-side { flex-direction: column; gap: 0; }
  .nav-side a { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-side a.active::after { bottom: 8px; width: 36px; right: auto; }
  .head-row, .trio, .rhythm { grid-template-columns: 1fr 1fr; }
  .article-card:first-child { grid-column: 1 / -1; min-height: 180px; }
  .rhythm-item:nth-child(2) { border-right: 0; }
  .rhythm-item:nth-child(1), .rhythm-item:nth-child(2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 767.98px) {
  .head-row, .trio, .rhythm, .scale { grid-template-columns: 1fr 1fr; }
  .split-head, .cta-row { flex-direction: column; align-items: flex-start; }
  .row-link { grid-template-columns: 108px minmax(0, 1fr); }
  .poster b { font-size: 24px; }
}
@media (max-width: 520px) {
  :root { --pad: 40px; }
  .brand-name { font-size: 13px; letter-spacing: 0; }
  .scale, .rhythm { grid-template-columns: 1fr 1fr; }
  .row-link { grid-template-columns: 86px minmax(0, 1fr); }
  .row-main { padding: 12px; }
  h3 { font-size: 16px; }
  .page-head { padding: 22px 0 18px; }
}

/* 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}