/* roulang page: index */
:root {
  --ink: #181B1F;
  --paper: #F6F7F1;
  --card: #FFFFFF;
  --text: #1F2429;
  --muted: #6B7278;
  --line: #E3E7E6;
  --brand: #B9F02C;
  --action: #F5436E;
  --yellow: #FFC61A;
  --danger: #E5484D;
  --shadow-sm: 0 1px 2px rgba(16,20,24,.04);
  --shadow-hover: 0 14px 28px -10px rgba(16,20,24,.16);
  --radius: 12px;
  --ease: 150ms cubic-bezier(.2, .7, .3, 1);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}
input {
  font-family: inherit;
  outline: none;
}
.container-x {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
}
@media (min-width: 640px) {
  .container-x {
    padding-left: 24px;
    padding-right: 24px;
  }
}
@media (min-width: 1024px) {
  .container-x {
    padding-left: 32px;
    padding-right: 32px;
  }
}
.section-space {
  padding-top: 72px;
  padding-bottom: 72px;
}
@media (min-width: 1024px) {
  .section-space {
    padding-top: 108px;
    padding-bottom: 108px;
  }
}
.section-head-narrow {
  max-width: 720px;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
}

/* header */
.header-main {
  position: sticky;
  top: 0;
  z-index: 60;
  width: 100%;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(227, 231, 230, .8);
}
.nav-link {
  position: relative;
  padding: 6px 4px;
  font-size: 15px;
  font-weight: 500;
  color: #42484e;
  border-radius: 6px;
  transition: color var(--ease);
}
.nav-link:hover {
  color: #111418;
}
.nav-link:after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
  transition: right var(--ease);
}
.nav-link:hover:after,
.nav-link.active:after {
  right: 0;
}
.nav-link.active {
  color: #111418;
  font-weight: 600;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 0 20px;
  height: 44px;
  border-radius: 999px;
  transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease);
  white-space: nowrap;
  user-select: none;
}
.btn:active {
  transform: scale(.97);
}
.btn:focus-visible {
  outline: 3px solid rgba(185, 240, 44, .5);
  outline-offset: 2px;
}
.btn-brand {
  background: var(--brand);
  color: #111418;
}
.btn-brand:hover {
  box-shadow: 0 8px 18px rgba(185, 240, 44, .35);
  transform: translateY(-1px);
}
.btn-action {
  background: var(--action);
  color: #fff;
}
.btn-action:hover {
  box-shadow: 0 10px 20px rgba(245, 67, 110, .3);
  transform: translateY(-1px);
}
.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, .55);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, .12);
  border-color: #fff;
  transform: translateY(-1px);
}
.btn-outline-dark {
  border: 1px solid var(--line);
  color: #292f36;
  background: #fff;
}
.btn-outline-dark:hover {
  border-color: #181B1F;
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}

/* hero */
.hero-bg {
  background:
    linear-gradient(130deg, rgba(24, 27, 31, .92) 0%, rgba(24, 27, 31, .88) 44%, rgba(24, 27, 31, .6) 100%),
    url('/assets/images/backpic/back-1.webp') right center / cover no-repeat;
}
.hero-highlight {
  display: inline-block;
  background: var(--brand);
  color: #111418;
  padding: 0 .18em;
  border-radius: 6px;
  line-height: 1.3;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.qt-card {
  position: relative;
  width: min(288px, 80vw);
  background: #202429;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 30px 80px -24px rgba(0, 0, 0, .6);
  transform: rotate(2deg);
  transition: transform var(--ease), box-shadow var(--ease);
}
.qt-card:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: 0 36px 84px -18px rgba(0, 0, 0, .7);
}
.qt-card-media {
  position: relative;
  aspect-ratio: 9 / 14;
}
.qt-card-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(16, 18, 21, .86) 0%, rgba(16, 18, 21, 0) 52%);
}
.qt-media-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.qt-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 999px;
  background: rgba(185, 240, 44, .95);
  color: #111418;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 12px rgba(185, 240, 44, .18);
  transition: transform var(--ease), background var(--ease);
}
.qt-card:hover .qt-play {
  transform: translate(-50%, -50%) scale(1.08);
}

/* quick category strip */
.category-strip {
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 8px 24px -20px rgba(16, 20, 24, .18);
}
.strip-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 12px 18px;
  border-bottom: 2px solid transparent;
  color: #4a5055;
  transition: border-color var(--ease), color var(--ease), background var(--ease);
}
.strip-link:hover {
  color: var(--text);
  background: #fafbf6;
  border-bottom-color: var(--brand);
}
.strip-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: #f2f4ef;
  color: #2c3138;
  transition: background var(--ease), color var(--ease);
}
.strip-link:hover .strip-icon {
  background: rgba(185, 240, 44, .35);
}

/* chip cards */
.h-scroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.h-scroll::-webkit-scrollbar {
  height: 6px;
}
.h-scroll::-webkit-scrollbar-track {
  background: transparent;
}
.h-scroll::-webkit-scrollbar-thumb {
  background: #e3e7e6;
  border-radius: 99px;
}
.chip-card {
  flex: 0 0 260px;
  scroll-snap-align: start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform var(--ease), box-shadow var(--ease);
}
.chip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* curate list */
.curate-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform var(--ease), box-shadow var(--ease);
}
.curate-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

/* review cards */
.review-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  width: 280px;
  flex: 0 0 280px;
  padding: 22px;
  transition: transform var(--ease), box-shadow var(--ease);
}
.review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #111418;
  font-weight: 700;
  font-size: 16px;
}

/* news rows */
.news-list-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  transition: background var(--ease);
}
.news-list-row:hover {
  padding-left: 8px;
}
.news-list-row:last-child {
  border-bottom: none;
}
.news-tag {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 4px;
  font-size: 12px;
  font-weight: 500;
  padding: 3px 9px;
  background: #f2f4ef;
  color: #2c3138;
  border-radius: 6px;
  white-space: nowrap;
}

/* faq */
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0 18px;
  text-align: left;
  color: var(--text);
  font-size: 17px;
  font-weight: 600;
  transition: color var(--ease);
}
.faq-toggle:hover {
  color: #111418;
}
.faq-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: #f1f3ee;
  color: #111418;
  transition: background var(--ease), transform var(--ease), color var(--ease);
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--brand);
}
.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.faq-panel-inner {
  padding: 0 40px 22px 0;
  max-width: 760px;
  color: var(--muted);
}

/* cta */
.cta-zone {
  background:
    linear-gradient(115deg, rgba(24, 27, 31, .88) 0%, rgba(24, 27, 31, .92) 58%, rgba(24, 27, 31, .6) 100%),
    url('/assets/images/backpic/back-3.png') left bottom / cover no-repeat;
}

/* footer */
.footer-main {
  background: #131619;
  color: rgba(255, 255, 255, .78);
}
.footer-link {
  display: inline-block;
  color: rgba(255, 255, 255, .66);
  line-height: 2.1;
  transition: color var(--ease), transform var(--ease);
}
.footer-link:hover {
  color: var(--brand);
}

/* search modal */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(18, 20, 24, .5);
  backdrop-filter: blur(6px);
  z-index: 80;
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s ease, visibility .22s;
}
.search-overlay.active {
  opacity: 1;
  visibility: visible;
}
.search-panel {
  width: min(680px, calc(100% - 32px));
  margin: 72px auto 0;
  background: #fff;
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,.3);
  transform: translateY(-12px);
  transition: transform .25s ease;
}
.search-overlay.active .search-panel {
  transform: translateY(0);
}
.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  height: 48px;
  padding: 0 16px;
  font-size: 15px;
  color: var(--text);
  transition: border-color var(--ease), box-shadow var(--ease);
}
.search-input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(185, 240, 44, .25);
}
.search-input::placeholder {
  color: var(--muted);
}

/* timeline */
.simple-line {
  height: 1px;
  background: var(--line);
  border: none;
  margin: 24px 0;
}

/* table / rich text style fallback */
.rich-text h2 {
  font-size: 26px;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
}
.rich-text h3 {
  font-size: 19px;
  font-weight: 600;
  margin-top: 22px;
  margin-bottom: 8px;
}
.rich-text p {
  margin-bottom: 14px;
}
@media (max-width: 640px) {
  .hero-h1 {
    font-size: 34px !important;
    line-height: 1.12 !important;
  }
  .section-space {
    padding-top: 58px;
    padding-bottom: 58px;
  }
}

/* roulang page: article */
:root {
  --ink: #181B1F;
  --paper: #F6F7F1;
  --card: #FFFFFF;
  --text: #1F2429;
  --muted: #6B7278;
  --line: #E3E7E6;
  --brand: #B9F02C;
  --action: #F5436E;
  --yellow: #FFC61A;
  --danger: #E5484D;
  --shadow-sm: 0 1px 2px rgba(16,20,24,.04);
  --shadow-md: 0 14px 28px -10px rgba(16,20,24,.16);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--paper);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

input {
  font-family: inherit;
}

.container-x {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.container-narrow {
  width: 100%;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 768px) {
  .container-x {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (min-width: 1280px) {
  .container-x {
    padding-left: 32px;
    padding-right: 32px;
  }
}

@media (min-width: 1024px) {
  .container-narrow {
    padding-left: 0;
    padding-right: 0;
  }
}

/* ===== Header & Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  height: 72px;
}

@media (max-width: 1023px) {
  .header-inner {
    height: 60px;
    gap: 12px;
  }
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  min-width: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--ink);
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.brand-text {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
  color: var(--ink);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding: 8px 2px;
  transition: color .15s cubic-bezier(.2,.7,.3,1);
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .15s cubic-bezier(.2,.7,.3,1);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  min-width: 178px;
  padding: 0 10px 0 13px;
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  transition: border-color .15s, box-shadow .15s, background .15s;
}

.search-trigger:hover,
.search-trigger:focus {
  border-color: var(--brand);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(185,240,44,.14);
  color: var(--text);
}

.search-trigger:focus {
  outline: none;
}

.search-kbd {
  margin-left: auto;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font-size: 11px;
  line-height: 1.4;
  color: var(--muted);
  white-space: nowrap;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  transition: border-color .15s, box-shadow .15s, transform .15s;
  flex-shrink: 0;
}

.icon-btn:hover,
.icon-btn:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(185,240,44,.14);
}

.icon-btn:active {
  transform: scale(.97);
}

.btn-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 20px;
  border-radius: 12px;
  background: var(--action);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  transition: background .15s, transform .15s, box-shadow .15s;
}

.btn-action:hover,
.btn-action:focus {
  background: #df3c5f;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-action:active {
  transform: scale(.97);
}

.btn-action.btn-sm,
.btn-primary.btn-sm {
  height: 40px;
  padding: 0 15px;
  border-radius: 10px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 20px;
  border-radius: 12px;
  background: var(--brand);
  color: #111418;
  font-size: 15px;
  font-weight: 800;
  white-space: nowrap;
  transition: background .15s, transform .15s, box-shadow .15s;
}

.btn-primary:hover,
.btn-primary:focus {
  background: #c9fc58;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(.97);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.btn-outline:hover,
.btn-outline:focus {
  border-color: var(--brand);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.btn-outline:active {
  transform: scale(.97);
}

/* ===== Mobile Drawer ===== */
.mobile-drawer {
  position: fixed;
  left: 0;
  right: 0;
  top: 60px;
  z-index: 48;
  background: #fff;
  padding: 20px 24px 24px;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 16px 32px -12px rgba(16,20,24,.14);
  display: none;
}

.mobile-drawer.open {
  display: block;
}

.mobile-nav-link {
  display: block;
  padding: 12px 10px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid rgba(227,231,230,.6);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--action);
  background: #FFF7F9;
}

/* ===== Search Overlay ===== */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(24,27,31,.55);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 12vh 16px 0;
}

.search-overlay.open {
  display: flex;
}

.search-panel {
  width: 100%;
  max-width: 560px;
  background: #fff;
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 24px 60px rgba(24,27,31,.22);
}

.search-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 6px 6px 14px;
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: 14px;
  transition: border-color .15s, box-shadow .15s;
}

.search-input-row:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(185,240,44,.14);
  background: #fff;
}

.search-input {
  flex: 1;
  height: 44px;
  border: none;
  background: transparent;
  font-size: 15px;
  color: var(--text);
}

.search-input:focus {
  outline: none;
}

.search-input::placeholder {
  color: var(--muted);
}

.search-esc {
  flex-shrink: 0;
  margin-right: 4px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font-size: 11px;
  color: var(--muted);
}

.suggest-label {
  display: block;
  margin-top: 20px;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}

.suggest-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.suggest-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 13px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  transition: border-color .15s, background .15s, transform .15s;
}

.suggest-chip:hover,
.suggest-chip:focus {
  border-color: var(--brand);
  background: rgba(185,240,44,.16);
  transform: translateY(-1px);
}

/* ===== Article Top ===== */
.article-top {
  position: relative;
  padding: 42px 0 32px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #F2F4EE 0%, #F6F7F1 100%);
  overflow: hidden;
}

.article-top::before {
  content: "";
  position: absolute;
  top: -60px;
  right: 6%;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(185,240,44,.18), transparent 65%);
  pointer-events: none;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--muted);
  position: relative;
}

.breadcrumb a {
  font-weight: 500;
  transition: color .15s;
}

.breadcrumb a:hover {
  color: var(--action);
}

.breadcrumb-sep {
  color: #C4CBC6;
}

.article-title {
  margin-top: 20px;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 18em;
  position: relative;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  position: relative;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.meta-item svg {
  width: 15px;
  height: 15px;
  opacity: .7;
}

/* ===== Article Body ===== */
.article-section {
  padding: 48px 0 40px;
  background: var(--card);
}

.prose {
  width: 100%;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
}

.prose p {
  margin-bottom: 1.45em;
}

.prose h2 {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.35;
  margin: 2.6em 0 .9em;
  padding-top: 1.2em;
  border-top: 1px solid var(--line);
  color: var(--ink);
}

.prose h3 {
  font-size: 21px;
  font-weight: 700;
  line-height: 1.45;
  margin: 2em 0 .8em;
  color: var(--ink);
}

.prose h4 {
  font-size: 17px;
  font-weight: 700;
  margin: 1.8em 0 .6em;
  color: var(--ink);
}

.prose ul,
.prose ol {
  margin: 0 0 1.5em;
  padding-left: 1.4em;
}

.prose li {
  margin-bottom: .55em;
}

.prose ul li {
  list-style: disc;
}

.prose ol li {
  list-style: decimal;
}

.prose a {
  color: var(--action);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(245,67,110,.4);
}

.prose a:hover {
  color: #D52E56;
}

.prose blockquote {
  margin: 1.8em 0;
  padding: 16px 20px;
  border-left: 4px solid var(--brand);
  background: #FBFDF5;
  border-radius: 0 14px 14px 0;
  color: #38414A;
}

.prose blockquote p {
  margin-bottom: 0;
}

.prose img {
  border-radius: 16px;
  margin: 2em auto;
  box-shadow: var(--shadow-md);
}

.prose table {
  width: 100%;
  margin: 2em 0;
  border-collapse: collapse;
  font-size: 15px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.prose thead {
  background: var(--ink);
  color: #fff;
}

.prose th,
.prose td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
}

.prose tbody tr {
  background: #fff;
}

.prose tbody tr:nth-child(even) {
  background: var(--paper);
}

.prose code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: .9em;
  padding: 2px 6px;
  background: #F2F4F4;
  border-radius: 6px;
  word-break: break-word;
}

.prose pre {
  margin: 2em 0;
  padding: 20px;
  background: #141719;
  color: #EDF1E8;
  border-radius: 14px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
}

.prose pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: 14px;
}

.article-tags {
  max-width: 760px;
  margin: 48px auto 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  transition: border-color .15s, background .15s, color .15s;
}

.tag-chip:hover,
.tag-chip:focus {
  border-color: var(--brand);
  background: rgba(185,240,44,.14);
  color: var(--text);
}

.article-back {
  max-width: 760px;
  margin: 34px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.article-back a {
  flex-shrink: 0;
}

/* ===== Related Section ===== */
.related-section {
  padding: 72px 0 84px;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.section-caption {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
}

.section-title {
  margin-top: 16px;
  font-size: clamp(30px, 3.6vw, 38px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.section-subtitle {
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
  max-width: 680px;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 38px;
}

@media (min-width: 768px) {
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.related-card {
  display: flex;
  align-items: stretch;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform .2s cubic-bezier(.2,.7,.3,1), box-shadow .2s;
}

.related-card:hover,
.related-card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.related-card-media {
  position: relative;
  width: 210px;
  min-height: 190px;
  flex-shrink: 0;
  overflow: hidden;
  background: #E8EBE4;
}

@media (max-width: 639px) {
  .related-card {
    flex-direction: column;
  }

  .related-card-media {
    width: 100%;
    height: 180px;
    min-height: 0;
  }
}

.related-card-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}

.related-card:hover .related-card-media img {
  transform: scale(1.04);
}

.related-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 24px 22px;
}

.related-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: rgba(185,240,44,.18);
  color: #333;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.related-card-body h3 {
  margin-top: 12px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.related-card-body p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.related-link {
  margin-top: auto;
  padding-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--action);
  font-size: 14px;
  font-weight: 700;
}

.related-link:hover {
  color: #D52E56;
}

.related-more {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== Not Found ===== */
.notfound-section {
  padding: 120px 20px 140px;
  background: var(--card);
}

.notfound-code {
  display: inline-block;
  font-size: 56px;
  font-weight: 900;
  color: rgba(24,27,31,.06);
  line-height: 1;
}

.notfound-section h1 {
  margin-top: 8px;
  font-size: 36px;
  font-weight: 800;
  color: var(--ink);
}

.notfound-section p {
  margin-top: 14px;
  font-size: 17px;
  color: var(--muted);
}

.notfound-section .btn-action {
  margin-top: 28px;
}

/* ===== Footer ===== */
.footer-main {
  background: var(--ink);
}

.footer-link {
  display: inline-block;
  padding: 5px 0;
  color: rgba(255,255,255,.58);
  transition: color .15s, transform .15s;
}

.footer-link:hover,
.footer-link:focus {
  color: var(--brand);
  transform: translateX(2px);
}

/* ===== Accessibility ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(185,240,44,.35);
}

@media (max-width: 1023px) {
  .mobile-drawer {
    top: 60px;
  }
}

/* roulang page: category1 */
:root {
  --ink: #181B1F;
  --paper: #F6F7F1;
  --card: #FFFFFF;
  --text: #1F2429;
  --muted: #6B7278;
  --line: #E3E7E6;
  --brand: #B9F02C;
  --action: #F5436E;
  --yellow: #FFC61A;
  --radius: 18px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font-family: inherit;
  font-size: inherit;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.container-x {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: 16px;
}

@media (min-width: 768px) {
  .container-x {
    padding-inline: 24px;
  }
}

@media (min-width: 1024px) {
  .container-x {
    padding-inline: 32px;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s cubic-bezier(.2, .7, .3, 1), transform 0.15s cubic-bezier(.2, .7, .3, 1), box-shadow 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.btn:active {
  transform: scale(.97);
}

.btn-brand {
  background: var(--brand);
  color: #111418;
  border-color: #c8ee5b;
}

.btn-brand:hover {
  background: #c6f545;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -12px rgba(185, 240, 44, 0.72);
}

.btn-action {
  background: var(--action);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.08);
}

.btn-action:hover {
  filter: brightness(1.07);
  transform: translateY(-2px);
  box-shadow: 0 14px 22px -10px rgba(245, 67, 110, 0.55);
}

.btn-outline {
  background: #FFFFFF;
  color: var(--ink);
  border-color: var(--line);
}

.btn-outline:hover {
  border-color: var(--brand);
  background: #fdffe8;
  transform: translateY(-2px);
  box-shadow: 0 12px 20px -16px rgba(24, 27, 31, 0.18);
}

.btn-lite {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.34);
}

.btn-lite:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--brand);
  transform: translateY(-2px);
}

.btn-sm {
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
}

.btn:focus-visible,
.nav-link:focus-visible,
.icon-btn:focus-visible,
.chip-link:focus-visible,
.footer-link:focus-visible,
.command-search:focus-visible {
  outline: 3px solid rgba(245, 67, 110, 0.32);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-block: 10px;
}

@media (max-width: 767px) {
  .header-inner {
    min-height: 60px;
    gap: 12px;
  }
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-mark {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--brand);
  border-radius: 12px;
}

.brand-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

@media (max-width: 380px) {
  .brand-name {
    font-size: 16px;
  }
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 15px;
  font-weight: 500;
  color: #57616a;
  transition: color 0.15s;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--brand);
  transition: right 0.25s cubic-bezier(.2, .7, .3, 1);
}

.nav-link:hover {
  color: var(--ink);
}

.nav-link:hover::after {
  right: 0;
}

.nav-link.active {
  color: var(--ink);
  font-weight: 600;
}

.nav-link.active::after {
  right: 0;
  background: var(--brand);
}

.command-search {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  min-width: 220px;
  padding: 0 10px 0 14px;
  background: #F8F9F7;
  color: #8A9299;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.command-search:hover {
  border-color: #c8d0cf;
  background: #FFFFFF;
  box-shadow: 0 8px 18px -16px rgba(24, 27, 31, 0.2);
}

.command-search kbd {
  font-family: inherit;
  margin-left: auto;
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  padding: 5px 7px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: #9AA1A6;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--ink);
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.icon-btn:hover {
  background: #F2F4EF;
  border-color: var(--line);
}

.mobile-nav-panel {
  background: #FFFFFF;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.mobile-nav-panel.open {
  max-height: 420px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  color: #20252B;
  font-weight: 500;
  font-size: 15px;
  transition: color 0.15s, background 0.15s;
}

.mobile-nav-link:hover {
  background: #F8F9F4;
  color: var(--ink);
}

@media (min-width: 1024px) {
  .mobile-nav-panel {
    max-height: 0 !important;
    overflow: hidden;
  }
}

.compact-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 320px at 90% 0%, rgba(185, 240, 44, 0.16), transparent 60%),
    radial-gradient(700px 320px at 0% 100%, rgba(255, 198, 26, 0.08), transparent 50%),
    var(--paper);
  border-bottom: 1px solid var(--line);
}

.hero-title {
  font-size: clamp(34px, 5.2vw, 54px);
  font-weight: 800;
  line-height: 1.12;
  color: var(--ink);
  text-wrap: balance;
  max-width: 11ch;
}

.hero-title-mark {
  display: inline-block;
  background: var(--brand);
  color: #111418;
  border-radius: 10px;
  padding: 0 8px;
  margin-bottom: 4px;
}

.hero-lead {
  margin-top: 22px;
  max-width: 56ch;
  font-size: 17px;
  line-height: 1.85;
  color: #4E575F;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--ink);
}

.breadcrumb .crumb-current {
  color: #9AA1A6;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-left: 0;
  margin-top: 28px;
}

.hero-chips li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  color: #40464D;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 999px;
}

.mosaic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: 190px 190px;
  gap: 14px;
  transform: rotate(0.6deg);
}

@media (min-width: 1024px) {
  .mosaic-grid {
    grid-template-rows: 220px 220px;
    gap: 16px;
  }
}

.mosaic-tall,
.mosaic-short {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: 0 12px 30px -22px rgba(16, 20, 24, 0.32);
}

.mosaic-tall {
  grid-row: span 2;
}

.float-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: absolute;
  left: -10px;
  bottom: 34px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  box-shadow: 0 18px 32px -24px rgba(16, 20, 24, 0.32);
}

.float-chip span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
}

.toc-strip {
  background: #FFFFFF;
  border-bottom: 1px solid var(--line);
}

.toc-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  padding-block: 12px;
  overflow-x: auto;
  scrollbar-width: none;
}

.toc-inner::-webkit-scrollbar {
  display: none;
}

.toc-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  flex-shrink: 0;
}

.chip-link {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  padding: 8px 15px;
  border: 1px solid var(--line);
  background: #FFFFFF;
  color: #454D54;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
  transition: background 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.15s, color 0.15s;
}

.chip-link:hover {
  background: #FCFFF1;
  border-color: var(--brand);
  color: var(--ink);
  transform: translateY(-1px);
  box-shadow: 0 10px 18px -16px rgba(24, 27, 31, 0.18);
}

.section-block {
  padding-block: 76px;
}

@media (min-width: 1024px) {
  .section-block {
    padding-block: 102px;
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--action);
  text-transform: uppercase;
}

.block-title {
  margin-top: 14px;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  max-width: 18ch;
}

@media (min-width: 1024px) {
  .block-title {
    font-size: 34px;
  }
}

.block-desc {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.9;
  color: #4B545B;
  max-width: 55ch;
}

.check-list {
  margin-top: 24px;
  display: grid;
  gap: 11px;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  font-size: 15.5px;
  line-height: 1.6;
  color: #3F474E;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 2px;
  width: 19px;
  height: 19px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 900;
  color: #111418;
  background: var(--brand);
  border-radius: 50%;
}

.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  box-shadow: 0 24px 44px -32px rgba(16, 20, 24, 0.24);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-badge {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: inline-flex;
  background: rgba(255, 255, 255, 0.92);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  backdrop-filter: blur(8px);
}

.section-note {
  margin-top: 46px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.section-note a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--brand);
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}

.section-note a:hover {
  color: var(--action);
  border-color: var(--action);
}

.faq-list {
  max-width: 840px;
  margin-inline: auto;
  display: grid;
  gap: 14px;
}

.acc-item {
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.acc-item.open {
  border-color: #D8E6A0;
  box-shadow: 0 18px 34px -26px rgba(16, 20, 24, 0.16);
}

.acc-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.acc-trigger:hover {
  color: var(--ink);
}

.acc-icon {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: #454C53;
  font-size: 19px;
  font-weight: 400;
  transform: rotate(0deg);
  transition: transform 0.25s, background 0.2s, color 0.2s, border-color 0.2s;
}

.acc-item.open .acc-icon {
  transform: rotate(45deg);
  background: var(--brand);
  color: #111418;
  border-color: var(--brand);
}

.acc-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.acc-item.open .acc-panel {
  max-height: 720px;
}

.acc-body {
  padding: 0 22px 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
  max-width: 780px;
}

.acc-body p + p {
  margin-top: 12px;
}

.cta-zone {
  position: relative;
  background: var(--ink);
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.32;
}

.cta-zone::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(24, 27, 31, 0.96) 0%, rgba(24, 27, 31, 0.6) 100%);
}

.cta-zone .container-x {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.2;
  color: #FFFFFF;
  text-wrap: balance;
}

.cta-desc {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.72);
  max-width: 62ch;
}

.footer-main {
  background: var(--ink);
}

.footer-link {
  display: inline-flex;
  width: fit-content;
  color: rgba(255, 255, 255, 0.58);
  line-height: 1.4;
  padding-block: 6px;
  transition: color 0.15s, transform 0.15s;
}

.footer-link:hover {
  color: var(--brand);
  transform: translateX(3px);
}

.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: none;
  padding: 10vh 20px 20px;
  background: rgba(24, 27, 31, 0.52);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
}

.search-overlay.open {
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.search-panel {
  width: min(680px, 100%);
  background: #FFFFFF;
  border-radius: 24px;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.4);
  overflow: hidden;
  animation: panelDown 0.2s ease-out;
}

@keyframes panelDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
}

.search-input-wrap input {
  flex: 1;
  height: 58px;
  border: none;
  outline: none;
  background: transparent;
  font-size: 16px;
  color: var(--text);
}

.search-input-wrap input::placeholder {
  color: #9AA1A6;
}

.search-panel-body {
  padding: 18px;
}

.search-lead {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
}

.search-suggest {
  display: grid;
  gap: 4px;
}

.search-suggest a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  color: #31383F;
  font-size: 15px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s, transform 0.15s;
}

.search-suggest a:hover {
  background: #F4F8E8;
  color: var(--ink);
  transform: translateX(2px);
}

.search-suggest .suggest-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  flex-shrink: 0;
}

.search-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #FFFFFF;
  color: var(--muted);
  font-size: 15px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.search-close:hover {
  border-color: var(--action);
  color: var(--action);
}

@media (max-width: 520px) {
  .mosaic-grid {
    grid-template-rows: 150px 150px;
  }
  .hero-title {
    font-size: 34px;
  }
  .block-title {
    font-size: 26px;
  }
  .btn {
    height: 44px;
    padding-inline: 18px;
    font-size: 14px;
  }
  .search-panel-body {
    padding: 14px;
  }
}

/* roulang page: category3 */
:root {
            --ink: #181B1F;
            --paper: #F6F7F1;
            --card: #FFFFFF;
            --text: #1F2429;
            --muted: #6B7278;
            --line: #E3E7E6;
            --brand: #B9F02C;
            --action: #F5436E;
            --yellow: #FFC61A;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow-md: 0 14px 28px -10px rgba(16, 20, 24, .12);
            --shadow-lg: 0 22px 44px -16px rgba(16, 20, 24, .18);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            border: 0;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--paper);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        img {
            display: block;
            max-width: 100%;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font: inherit;
            cursor: pointer;
            background: none;
        }

        .container-x {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .container-x {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid #E3E7E6;
            transition: box-shadow .2s ease;
        }

        .logo-main {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 0;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            background: #181B1F;
            color: #B9F02C;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 800;
            font-size: 18px;
            letter-spacing: -.02em;
            color: #1F2429;
            white-space: nowrap;
            margin: 0;
        }

        .nav-center {
            margin-left: 16px;
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            height: 72px;
            padding: 0 2px;
            font-size: 15px;
            font-weight: 600;
            color: #4C545D;
            white-space: nowrap;
            transition: color .2s ease;
        }

        .nav-link:hover {
            color: #1F2429;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 16px;
            height: 3px;
            border-radius: 99px;
            background: #B9F02C;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .2s cubic-bezier(.2, .7, .3, 1);
        }

        .nav-link:hover::after {
            transform: scaleX(.55);
        }

        .nav-link.active {
            color: #1F2429;
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .btn-brand,
        .btn-action,
        .btn-outline,
        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 20px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: transform .15s cubic-bezier(.2, .7, .3, 1),
                box-shadow .15s ease,
                background-color .15s ease;
            flex-shrink: 0;
        }

        .btn-brand {
            background: #B9F02C;
            color: #111418;
        }

        .btn-brand:hover {
            background: #c6f95a;
            box-shadow: 0 10px 24px -8px rgba(185, 240, 44, .55);
            transform: translateY(-2px);
        }

        .btn-action {
            background: #F5436E;
            color: #fff;
        }

        .btn-action:hover {
            background: #ff5c85;
            box-shadow: 0 12px 24px -10px rgba(245, 67, 110, .45);
            transform: translateY(-2px);
        }

        .btn-outline {
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fff;
            background: transparent;
        }

        .btn-outline:hover {
            border-color: rgba(255, 255, 255, .75);
            background: rgba(255, 255, 255, .08);
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: #181B1F;
        }

        .btn-light:hover {
            background: #f3f4f0;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-brand:active,
        .btn-action:active,
        .btn-outline:active {
            transform: scale(.97);
        }

        .search-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 220px;
            height: 40px;
            border: 1px solid #E3E7E6;
            border-radius: 999px;
            background: #FFFFFF;
            padding: 0 6px 0 14px;
            color: #6B7278;
            font-size: 13px;
            cursor: text;
            transition: border-color .15s ease, box-shadow .15s ease;
        }

        .search-trigger:hover {
            border-color: #B9F02C;
            box-shadow: 0 0 0 4px rgba(185, 240, 44, .15);
        }

        .search-trigger kbd {
            margin-left: auto;
            border: 1px solid #E3E7E6;
            border-radius: 6px;
            background: #F6F7F1;
            color: #6B7278;
            font-size: 11px;
            padding: 2px 7px;
            font-family: inherit;
        }

        .hero-inner {
            position: relative;
            padding: 60px 0 72px;
        }

        .hero-cover {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: .25;
        }

        .hero-cover-none {
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(24, 27, 31, .86) 0%, rgba(24, 27, 31, .62) 50%, rgba(24, 27, 31, .48) 100%);
        }

        .rank-section-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .rank-card {
            border-radius: 16px;
            background: #fff;
            border: 1px solid #E3E7E6;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform .2s cubic-bezier(.2, .7, .3, 1),
                box-shadow .2s ease,
                border-color .2s ease;
        }

        .rank-card-soft {
            background: #fff;
            border: 1px solid #E3E7E6;
            border-radius: 16px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform .2s cubic-bezier(.2, .7, .3, 1),
                box-shadow .2s ease,
                border-color .2s ease;
        }

        .rank-card-soft:hover,
        .rank-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 32px -12px rgba(16, 20, 24, .16);
            border-color: rgba(185, 240, 44, .6);
        }

        .rank-media {
            overflow: hidden;
            height: auto;
        }

        .rank-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }

        .rank-card:hover .rank-media img {
            transform: scale(1.03);
        }

        .number-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 10px;
            background: #B9F02C;
            color: #111418;
            font-weight: 800;
            font-size: 13px;
        }

        .rank-tag {
            display: inline-flex;
            align-items: center;
            height: 26px;
            padding: 0 10px;
            border-radius: 999px;
            background: rgba(185, 240, 44, .13);
            color: #111418;
            font-size: 12px;
            font-weight: 600;
            border: 1px solid rgba(185, 240, 44, .35);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -.02em;
            color: #181B1F;
        }

        .section-subtitle {
            color: #6B7278;
            font-size: 15px;
            line-height: 1.7;
        }

        .faq-row {
            border-bottom: 1px solid #E3E7E6;
        }

        .faq-row:first-child {
            border-top: 1px solid #E3E7E6;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            padding: 20px 0;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: #1F2429;
            transition: color .15s ease;
        }

        .faq-question:hover {
            color: #181B1F;
        }

        .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 10px;
            background: #F6F7F1;
            color: #181B1F;
            transition: transform .25s ease, background-color .2s ease;
            flex-shrink: 0;
        }

        .faq-row.open .faq-icon {
            transform: rotate(45deg);
            background: #B9F02C;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-answer-inner {
            padding: 0 34px 24px 0;
            color: #5C646C;
            font-size: 15px;
            line-height: 1.85;
            max-width: 74ch;
        }

        .steps-circle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(185, 240, 44, .18);
            color: #181B1F;
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            border: 1px solid rgba(185, 240, 44, .35);
        }

        .footer-main {
            background: #181B1F;
        }

        .footer-link {
            display: block;
            width: fit-content;
            margin-top: 8px;
            color: rgba(255, 255, 255, .52);
            transition: color .15s ease;
        }

        .footer-link:hover {
            color: #FFFFFF;
        }

        .avatar-ring {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #F6F7F1;
            font-weight: 700;
            color: #181B1F;
            flex-shrink: 0;
        }

        .review-card {
            background: #FFFFFF;
            border: 1px solid #E3E7E6;
            border-radius: 16px;
            padding: 20px;
            transition: box-shadow .18s ease, transform .18s ease;
        }

        .review-card:hover {
            box-shadow: 0 16px 30px -16px rgba(16, 20, 24, .15);
            transform: translateY(-2px);
        }

        .star {
            color: #FFC61A;
        }

        .footer-bottom {
            color: rgba(255, 255, 255, .34);
            font-size: 13px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 34px;
            }
            .hero-inner {
                padding: 80px 0 96px;
            }
        }

        @media (min-width: 1024px) {
            .rank-grid-one {
                display: grid;
                grid-template-columns: 2fr 1fr;
                gap: 24px;
            }
            .rank-grid-two {
                display: grid;
                grid-template-columns: 1fr 1.4fr 1fr;
                gap: 24px;
                align-items: stretch;
            }
            .rank-grid-feature {
                display: grid;
                grid-template-columns: 1.1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .nav-center,
            .search-trigger,
            .header-cta-space {
                display: none !important;
            }
            .logo-text {
                font-size: 17px;
            }
            .section-title {
                font-size: 25px;
            }
        }

        .mobile-menu {
            background: #ffffff;
            border-top: 1px solid #E3E7E6;
            padding: 14px 20px 28px;
            display: none;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            border-radius: 12px;
            padding: 13px 14px;
            font-weight: 600;
            font-size: 15px;
            color: #252B31;
            margin-top: 8px;
            background: #F6F7F1;
        }

        .mobile-menu a.active {
            background: rgba(185, 240, 44, .2);
            color: #111418;
        }

        .search-overlay {
            position: fixed;
            inset: 0;
            background: rgba(24, 27, 31, .55);
            z-index: 80;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding: 80px 16px 20px;
            opacity: 0;
            visibility: hidden;
            transition: all .15s ease;
        }

        .search-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        .search-panel {
            background: #fff;
            width: 100%;
            max-width: 640px;
            border-radius: 20px;
            box-shadow: 0 24px 70px -18px rgba(0, 0, 0, .3);
            overflow: hidden;
            transform: translateY(-6px);
            transition: transform .2s ease;
        }

        .search-overlay.open .search-panel {
            transform: translateY(0);
        }

        .tag-mini-all {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 7px 12px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid #E3E7E6;
            color: #4C545D;
            font-size: 13px;
            transition: border-color .15s ease, background-color .15s ease;
        }

        .tag-mini-all:hover {
            border-color: #B9F02C;
            background: rgba(185, 240, 44, .1);
            color: #111418;
        }

/* roulang page: category2 */
:root {
            --ink: #181B1F;
            --paper: #F6F7F1;
            --card: #FFFFFF;
            --text: #1F2429;
            --muted: #6B7278;
            --line: #E3E7E6;
            --brand: #B9F02C;
            --action: #F5436E;
            --yellow: #FFC61A;
            --danger: #E5484D;
            --radius-sm: 10px;
            --radius-card: 14px;
            --radius-large: 22px;
            --shadow-card: 0 1px 2px rgba(16, 20, 24, .04);
            --shadow-hover: 0 18px 34px -14px rgba(16, 20, 24, .18);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--paper);
            color: var(--text);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input {
            font: inherit;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(185, 240, 44, .55);
            outline-offset: 2px;
        }

        .container-x {
            width: 100%;
            max-width: 1280px;
            margin-inline: auto;
            padding-inline: 16px;
        }

        @media (min-width: 768px) {
            .container-x {
                padding-inline: 24px;
            }
        }

        @media (min-width: 1024px) {
            .container-x {
                padding-inline: 32px;
            }
        }

        .section-space {
            padding: 72px 0;
        }

        @media (min-width: 1024px) {
            .section-space {
                padding: 104px 0;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--line);
        }

        .header-wrap {
            display: flex;
            height: 60px;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }

        @media (min-width: 1024px) {
            .header-wrap {
                height: 72px;
                gap: 28px;
            }
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: var(--ink);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: -0.02em;
            white-space: nowrap;
            color: var(--text);
        }

        @media (min-width: 768px) {
            .logo-text {
                font-size: 20px;
            }
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            font-size: 15px;
            font-weight: 500;
            color: #455158;
            padding: 8px 2px;
            transition: color .15s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            height: 2px;
            width: 0;
            border-radius: 999px;
            background: var(--brand);
            transition: width .2s ease;
        }

        .nav-link:hover {
            color: var(--ink);
        }

        .nav-link.active {
            color: var(--ink);
            font-weight: 600;
        }

        .nav-link.active::after,
        .nav-link:hover::after {
            width: 100%;
        }

        .search-trigger {
            height: 42px;
            width: 220px;
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 0 14px;
            color: var(--muted);
            font-size: 14px;
            transition: border-color .15s, box-shadow .15s, background .15s;
            cursor: pointer;
        }

        .search-trigger:hover {
            border-color: rgba(185, 240, 44, .8);
            box-shadow: 0 4px 12px -4px rgba(24, 27, 31, .08);
        }

        .search-trigger kbd {
            margin-left: auto;
            font-size: 11px;
            line-height: 1;
            padding: 4px 7px;
            border-radius: 6px;
            border: 1px solid var(--line);
            background: #F2F4F4;
            color: var(--muted);
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 22px;
            border-radius: 999px;
            border: 1px solid transparent;
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            cursor: pointer;
            transition: transform .15s cubic-bezier(.2, .7, .3, 1), box-shadow .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
        }

        .btn:active {
            transform: scale(.97);
        }

        .btn-brand {
            background: var(--brand);
            color: #111418 !important;
        }

        .btn-brand:hover {
            transform: translateY(-1px);
            box-shadow: 0 12px 24px -10px rgba(185, 240, 44, .5);
        }

        .btn-action {
            background: var(--action);
            color: #fff;
        }

        .btn-action:hover {
            transform: translateY(-1px);
            box-shadow: 0 12px 24px -10px rgba(245, 67, 110, .5);
        }

        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, .32);
            color: #fff;
        }

        .btn-outline-light:hover {
            border-color: rgba(255, 255, 255, .72);
            background: rgba(255, 255, 255, .1);
            transform: translateY(-1px);
        }

        .btn-header {
            background: var(--ink);
            color: #fff;
            height: 42px;
            padding: 0 18px;
            font-size: 14px;
        }

        .btn-header:hover {
            background: #060809;
            transform: translateY(-1px);
        }

        .category-hero {
            position: relative;
            overflow: hidden;
            background: var(--ink);
        }

        .category-hero .hero-bg {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-position: center;
            background-size: cover;
            position: absolute;
            inset: 0;
        }

        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(88deg, rgba(24, 27, 31, .98) 0%, rgba(24, 27, 31, .86) 52%, rgba(24, 27, 31, .46) 100%);
        }

        .brand-highlight {
            display: inline-block;
            background: var(--brand);
            color: #111418;
            padding: 0 10px;
            border-radius: 10px;
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .16);
            color: rgba(255, 255, 255, .85);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 22px;
        }

        .hero-listline {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 26px;
        }

        .hero-listline span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 13px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            color: rgba(255, 255, 255, .8);
            font-size: 13px;
        }

        .hero-listline svg {
            color: var(--brand);
        }

        .spotlight-hero {
            width: 100%;
            max-width: 440px;
            margin-inline: auto;
            background: #22262B;
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 28px 60px -20px rgba(0, 0, 0, .52);
        }

        .spotlight-hero-media {
            position: relative;
            aspect-ratio: 4 / 5;
            overflow: hidden;
            background: #0B0D0F;
        }

        .spotlight-hero-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .68;
        }

        .spotlight-hero-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(24, 27, 31, .08) 0%, rgba(24, 27, 31, .65) 100%);
        }

        .spotlight-tag {
            position: absolute;
            z-index: 3;
            left: 14px;
            top: 14px;
            padding: 6px 12px;
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            background: var(--brand);
            color: #111418;
            box-shadow: 0 6px 16px -6px rgba(0, 0, 0, .3);
        }

        .spotlight-count {
            position: absolute;
            z-index: 3;
            right: 14px;
            bottom: 14px;
            padding: 5px 11px;
            border-radius: 999px;
            background: rgba(0, 0, 0, .42);
            border: 1px solid rgba(255, 255, 255, .18);
            color: #fff;
            font-size: 12px;
            backdrop-filter: blur(4px);
        }

        .spotlight-hero-body {
            padding: 18px 18px 20px;
        }

        .spotlight-hero-body .topic {
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .02em;
        }

        .spotlight-hero-body h2 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            margin-top: 8px;
            margin-bottom: 10px;
        }

        .spotlight-hero-body p {
            color: rgba(255, 255, 255, .62);
            font-size: 14px;
            margin: 0 0 14px;
        }

        .section-kicker {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: .03em;
            color: var(--action);
            margin: 0 0 10px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 14px;
            letter-spacing: -0.01em;
            color: var(--ink);
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 34px;
            }
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--muted);
            max-width: 72ch;
        }

        .hover-lift {
            transition: transform .2s cubic-bezier(.2, .7, .3, 1), box-shadow .2s ease, border-color .2s ease;
        }

        .hover-lift:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .spotlight-large {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow .2s ease, transform .2s ease;
        }

        .spotlight-large:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .side-rank-card {
            display: flex;
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 12px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .2s ease, transform .2s ease;
        }

        .side-rank-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .rank-no {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 32px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 800;
            background: rgba(185, 240, 44, .24);
            color: #253000;
            padding: 0 10px;
        }

        .rank-no.action {
            background: rgba(245, 67, 110, .14);
            color: var(--action);
        }

        .scene-list {
            display: grid;
            gap: 14px;
        }

        .scene-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 20px;
            box-shadow: var(--shadow-card);
        }

        .scene-item-number {
            flex: none;
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: var(--brand);
            color: #111418;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 17px;
        }

        .scene-item h3 {
            margin: 0 0 6px;
            font-size: 18px;
            font-weight: 650;
            color: var(--ink);
        }

        .scene-item p {
            margin: 0;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.7;
        }

        .metric-panel {
            background: var(--ink);
            border-radius: 24px;
            padding: 30px 24px;
            color: #fff;
            overflow: hidden;
        }

        @media (min-width: 1024px) {
            .metric-panel {
                padding: 44px;
            }
        }

        .metric-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .12);
        }

        .metric-item:last-child {
            border-bottom: 0;
        }

        .metric-item + .metric-item {
            border-top: 0;
        }

        .metric-icon {
            width: 42px;
            height: 42px;
            flex: none;
            border-radius: 14px;
            background: rgba(185, 240, 44, .16);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .metric-item h3 {
            margin: 0 0 5px;
            color: #fff;
            font-size: 18px;
            font-weight: 650;
        }

        .metric-item p {
            margin: 0;
            color: rgba(255, 255, 255, .58);
            font-size: 14px;
            line-height: 1.7;
        }

        .step-list {
            position: relative;
            display: grid;
            gap: 16px;
            margin-top: 28px;
        }

        @media (min-width: 768px) {
            .step-list {
                grid-template-columns: repeat(3, 1fr);
                gap: 22px;
            }
        }

        .step-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 18px;
            padding: 24px;
            position: relative;
            box-shadow: var(--shadow-card);
        }

        .step-card .step-index {
            display: inline-flex;
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: var(--action);
            color: #fff;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 17px;
            margin-bottom: 18px;
        }

        .step-card h3 {
            margin: 0 0 8px;
            font-size: 18px;
            font-weight: 650;
        }

        .step-card p {
            margin: 0;
            font-size: 14px;
            line-height: 1.75;
            color: var(--muted);
        }

        .faq-wrap {
            border-top: 1px solid var(--line);
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            background: transparent;
            border: 0;
            cursor: pointer;
            text-align: left;
            padding: 22px 0;
        }

        .faq-q h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0;
            color: var(--ink);
            line-height: 1.5;
        }

        .faq-icon {
            flex: none;
            width: 34px;
            height: 34px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--line);
            color: var(--muted);
            background: #fff;
            transition: background .2s, color .2s, border-color .2s, transform .25s;
        }

        .faq-icon svg {
            transition: transform .25s ease;
        }

        .faq-item.open .faq-icon {
            background: rgba(245, 67, 110, .1);
            border-color: rgba(245, 67, 110, .3);
            color: var(--action);
        }

        .faq-item.open .faq-icon svg {
            transform: rotate(45deg);
        }

        .faq-a {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .25s ease;
        }

        .faq-a-inner {
            overflow: hidden;
        }

        .faq-item.open .faq-a {
            grid-template-rows: 1fr;
        }

        .faq-answer-text {
            padding: 0 0 24px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
            max-width: 70ch;
            margin: 0;
        }

        .footer-link {
            color: rgba(255, 255, 255, .55);
            line-height: 2.1;
            transition: color .15s ease, transform .15s ease;
        }

        .footer-link:hover {
            color: #fff;
            transform: translateX(2px);
        }

        .cta-zone {
            position: relative;
            overflow: hidden;
            background: var(--ink);
            border-radius: 28px;
        }

        .cta-zone .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-position: center;
            background-size: cover;
        }

        .cta-zone .cta-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(24, 27, 31, .9) 0%, rgba(24, 27, 31, .72) 100%);
        }

        .mobile-menu {
            background: #fff;
            border-top: 1px solid var(--line);
            padding: 14px 16px 18px;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 6px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-bottom: 1px solid #F0F2F1;
        }

        .mobile-menu a:last-child {
            border-bottom: 0;
        }

        .mobile-menu a.active {
            color: #111418;
            font-weight: 700;
            background: rgba(185, 240, 44, .28);
        }

        .search-modal {
            position: fixed;
            inset: 0;
            z-index: 100;
            display: none;
            align-items: flex-start;
            justify-content: center;
            padding: 90px 18px 30px;
        }

        .search-modal.open {
            display: flex;
        }

        .search-backdrop {
            position: absolute;
            inset: 0;
            background: rgba(24, 27, 31, .72);
            backdrop-filter: blur(4px);
        }

        .search-panel {
            position: relative;
            width: 100%;
            max-width: 620px;
            background: #fff;
            border-radius: 24px;
            padding: 22px;
            box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .4);
        }

        .search-panel form {
            display: flex;
            align-items: center;
            background: #F3F4F3;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 5px 6px 5px 16px;
            gap: 10px;
        }

        .search-panel input {
            flex: 1;
            min-width: 0;
            background: transparent;
            border: 0;
            font-size: 15px;
            padding: 8px 0;
            color: var(--text);
            outline: 0;
        }

        .search-panel input::placeholder {
            color: var(--muted);
        }

        .quick-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }

        .quick-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 13px;
            border-radius: 999px;
            border: 1px solid var(--line);
            background: #fff;
            color: #444E55;
            font-size: 13px;
            transition: border-color .15s, background .15s, color .15s;
        }

        .quick-links a:hover {
            border-color: rgba(185, 240, 44, .9);
            background: rgba(185, 240, 44, .18);
            color: #111418;
        }

        .simple-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 18px 20px;
        }

/* roulang page: category4 */
:root {
    --ink: #181B1F;
    --paper: #F6F7F1;
    --card: #FFFFFF;
    --text: #1F2429;
    --muted: #6B7278;
    --line: #E3E7E6;
    --brand: #B9F02C;
    --action: #F5436E;
    --yellow: #FFC61A;
  }

  * {
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    margin: 0;
    font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--paper);
    color: var(--text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img {
    max-width: 100%;
    display: block;
  }
  a {
    text-decoration: none;
    color: inherit;
  }
  button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
  }
  input {
    font-family: inherit;
  }

  :focus-visible {
    outline: 3px solid rgba(185, 240, 44, .45);
    outline-offset: 2px;
    border-radius: 6px;
  }

  .container-x {
    max-width: 1280px;
    margin-inline: auto;
    padding-inline: 16px;
  }
  @media (min-width: 768px) {
    .container-x {
      padding-inline: 24px;
    }
  }
  @media (min-width: 1280px) {
    .container-x {
      padding-inline: 32px;
    }
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }
  .header-inner {
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }
  @media (min-width: 1024px) {
    .header-inner {
      height: 72px;
    }
  }

  .logo-mark {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: var(--ink);
    color: var(--brand);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: none;
  }
  .logo-word {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: .01em;
    color: var(--text);
    white-space: nowrap;
  }
  @media (max-width: 380px) {
    .logo-word {
      font-size: 15px;
    }
  }

  .nav-link {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    color: #51585F;
    padding: 6px 2px;
    transition: color 150ms cubic-bezier(.2,.7,.3,1);
  }
  .nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: -2px;
    height: 2px;
    border-radius: 99px;
    background: var(--ink);
    transition: right 180ms cubic-bezier(.2,.7,.3,1);
  }
  .nav-link:hover {
    color: var(--text);
  }
  .nav-link:hover:not(.active)::after {
    right: 0;
  }
  .nav-link.active {
    color: var(--text);
    font-weight: 600;
  }
  .nav-link.active::after {
    right: 0;
    background: var(--brand);
    height: 3px;
  }

  .brand-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 42px;
    padding: 0 18px;
    border-radius: 999px;
    background: var(--brand);
    color: #111418;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(185, 240, 44, .18);
    transition: transform 150ms cubic-bezier(.2,.7,.3,1), box-shadow 150ms cubic-bezier(.2,.7,.3,1), background 150ms ease;
  }
  .brand-btn:hover {
    box-shadow: 0 10px 20px -8px rgba(185, 240, 44, .5);
    transform: translateY(-1px);
  }
  .brand-btn:active {
    transform: scale(.97);
  }

  .action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 42px;
    padding: 0 18px;
    border-radius: 999px;
    background: var(--action);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    transition: transform 150ms cubic-bezier(.2,.7,.3,1), box-shadow 150ms cubic-bezier(.2,.7,.3,1), background 150ms ease;
  }
  .action-btn:hover {
    box-shadow: 0 10px 20px -8px rgba(245, 67, 110, .45);
    transform: translateY(-1px);
  }
  .action-btn:active {
    transform: scale(.97);
  }

  .ghost-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 20px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,.28);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    transition: border 150ms ease, background 150ms ease, transform 150ms cubic-bezier(.2,.7,.3,1);
  }
  .ghost-btn:hover {
    border-color: rgba(255,255,255,.7);
    background: rgba(255,255,255,.08);
  }
  .ghost-btn:active {
    transform: scale(.97);
  }

  .search-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 220px;
    height: 40px;
    padding: 0 12px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    transition: border 150ms ease, box-shadow 180ms ease;
  }
  .search-pill:focus-within {
    border-color: var(--brand);
    box-shadow: 0 0 0 4px rgba(185,240,44,.22);
  }
  .search-pill input {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    font-size: 13px;
    color: var(--text);
  }
  .search-pill input::placeholder {
    color: var(--muted);
  }
  .search-pill kbd {
    font-size: 11px;
    color: var(--muted);
    border: 1px solid var(--line);
    border-radius: 5px;
    padding: 1px 5px;
    background: #FAFBF7;
    white-space: nowrap;
  }

  .icon-btn {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    color: #333;
    border: 1px solid var(--line);
    background: #fff;
    transition: background 150ms ease, transform 150ms cubic-bezier(.2,.7,.3,1);
  }
  .icon-btn:hover {
    background: #F3F4F0;
    transform: translateY(-1px);
  }
  .icon-btn:active {
    transform: scale(.96);
  }

  .mobile-menu-btn {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid var(--line);
  }

  .mobile-nav {
    display: none;
    border-top: 1px solid var(--line);
    background: #fff;
    padding: 8px 16px 16px;
  }
  .mobile-nav.open {
    display: block;
    animation: fadeDown .2s ease both;
  }
  .mobile-nav a {
    display: block;
    padding: 12px 4px;
    font-size: 15px;
    font-weight: 500;
    border-bottom: 1px solid #EFF1EC;
  }
  .mobile-nav a:last-child {
    border-bottom: none;
  }
  .mobile-nav a.active {
    color: #111;
    font-weight: 700;
  }

  @keyframes fadeDown {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .category-hero-overlay {
    background: linear-gradient(90deg, rgba(24,27,31,.94) 0%, rgba(24,27,31,.72) 52%, rgba(24,27,31,.5) 100%);
  }

  .chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 11px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    color: #42484E;
    font-size: 12px;
    font-weight: 500;
    transition: border 150ms ease, background 150ms ease, transform 150ms ease;
  }
  a.chip:hover {
    background: #F2F4EF;
    border-color: #CDD3D1;
    transform: translateY(-1px);
  }

  .soft-card {
    background: var(--card);
    border-radius: 16px;
    border: 1px solid var(--line);
    box-shadow: 0 1px 2px rgba(16,20,24,.04);
    padding: 32px;
  }

  .review-quote {
    position: relative;
  }
  .review-quote::before {
    content: "“";
    position: absolute;
    top: -34px;
    left: -6px;
    font-size: 88px;
    line-height: 1;
    color: rgba(185,240,44,.5);
    font-weight: 800;
    pointer-events: none;
  }

  .rate-line {
    display: grid;
    grid-template-columns: 64px 1fr 38px;
    align-items: center;
    gap: 14px;
  }
  @media (max-width: 520px) {
    .rate-line {
      grid-template-columns: 54px 1fr 32px;
    }
  }
  .rate-track {
    height: 8px;
    border-radius: 99px;
    background: #E9ECE9;
    overflow: hidden;
  }
  .rate-bar {
    height: 100%;
    border-radius: 99px;
    background: var(--brand);
  }

  .faq-block {
    border-bottom: 1px solid var(--line);
  }
  .faq-block:first-of-type {
    border-top: 1px solid var(--line);
  }
  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 24px 4px;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.5;
    transition: color 150ms ease;
  }
  .faq-q:hover {
    color: #111;
  }
  .faq-q:hover .faq-icon {
    border-color: var(--brand);
    color: #111;
  }
  .faq-icon {
    flex: none;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 400;
    color: #666;
    transition: background 180ms ease, transform 180ms ease, color 180ms ease, border 180ms ease;
    line-height: 1;
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 260ms cubic-bezier(.2,.7,.3,1);
  }
  .faq-answer-inner {
    padding: 0 4px 22px;
    color: #4B5258;
    font-size: 15px;
    line-height: 1.85;
    max-width: 72ch;
  }
  .faq-block.active .faq-icon {
    transform: rotate(45deg);
    background: var(--brand);
    border-color: var(--brand);
    color: #111418;
  }
  .faq-block.active .faq-answer {
    max-height: 600px;
  }

  .footer-link {
    color: rgba(255,255,255,.55);
    padding: 5px 0;
    transition: color 150ms ease, padding-left 150ms ease;
    display: inline-block;
  }
  .footer-link:hover {
    color: rgba(255,255,255,.9);
    padding-left: 4px;
  }

  .cover-img-shell {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
  }
  .cover-img-shell img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 220ms ease;
  }
  .cover-img-shell:hover img {
    transform: scale(1.03);
  }

  .list-card {
    transition: transform 180ms cubic-bezier(.2,.7,.3,1), box-shadow 180ms ease;
  }
  .list-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 28px -10px rgba(16,20,24,.14);
  }