/* roulang page: index */
:root {
    --pine: #0F5E5C;
    --leaf: #0A4140;
    --orange: #E2531F;
    --khaki: #B98A45;
    --paper: #F7F3EC;
    --ink: #23211D;
    --ink2: #5D574C;
    --ink3: #8A8378;
    --line: #E5DFD4;
    --deep: #15322F;
  }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
    background: #F7F3EC;
    color: #23211D;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  * { box-sizing: border-box; }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; }
  button { font-family: inherit; }

  .container-x {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav-wrap { background: rgba(247,243,236,0.94); backdrop-filter: blur(8px); border-bottom: 1px solid #E5DFD4; transition: box-shadow .2s ease; }
  .nav-wrap.is-scrolled { box-shadow: 0 6px 24px rgba(20, 30, 26, 0.06); }

  .nav-link { position: relative; font-size: 15px; font-weight: 500; color: #23211D; padding: 10px 2px; transition: color .18s ease; }
  .nav-link:hover { color: #0F5E5C; }
  .nav-link.active { color: #0F5E5C; }
  .nav-link.active:after { content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; border-radius: 99px; background: #0F5E5C; }

  .btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: #E2531F; color: #fff; border-radius: 999px; padding: 12px 26px;
    font-weight: 600; font-size: 15px; transition: all .18s ease;
    box-shadow: 0 8px 24px rgba(226,83,31,.22);
    line-height: 1.2;
  }
  .btn-primary:hover { background: #c64513; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(226,83,31,.3);}
  .btn-primary:active { transform: translateY(0); }
  .btn-ghost {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    border: 1px solid #0F5E5C; color: #0F5E5C; background: rgba(15,94,92,.02);
    border-radius: 999px; padding: 12px 26px; font-weight: 600; font-size: 15px;
    transition: all .18s ease; line-height: 1.2;
  }
  .btn-ghost:hover { background: rgb(15 94 92 / 8%); transform: translateY(-1px); }

  .btn-light { background: #fff; color: #0F5E5C; font-weight: 600; border: none; border-radius: 999px; padding: 11px 28px; transition: all .18s ease;}
  .btn-light:hover { background: #f0ede5; transform: translateY(-1px); }

  .text-link { color: #0F5E5C; font-weight: 500; position: relative; }
  .text-link:hover { text-decoration: underline; text-underline-offset: 4px; color: #0A4140;}

  .section-kicker {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 14px; color: #B98A45; font-weight: 600; letter-spacing: 0.04em;
  }
  .section-kicker:before { content: ''; width: 16px; height: 2px; background: #B98A45; border-radius: 9px; }

  .card-white { background: #fff; border: 1px solid #E5DFD4; border-radius: 1rem; box-shadow: 0 1px 2px rgba(32,28,20,.04); transition: all .2s ease; }
  .card-white:hover { box-shadow: 0 12px 32px rgba(32,28,20,.1); transform: translateY(-2px); }

  .channel-icon { width: 44px; height: 44px; border-radius: 14px; background: #F7F3EC; display: inline-flex; align-items: center; justify-content: center; color: #0F5E5C;}
  .card-hover-line { position: relative; overflow: hidden; }
  .card-hover-line:after { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: #0F5E5C; transform: scaleX(0); transition: transform .2s ease; transform-origin: left; }
  .card-hover-line:hover:after { transform: scaleX(1); }

  .hero-img { box-shadow: 0 18px 48px rgba(32,28,20,.18); border: 6px solid #fff; border-radius: 1.25rem; }
  .hero-bg {
    background-image: linear-gradient(90deg, rgba(247,243,236,.92) 0%, rgba(247,243,236,.7) 68%, rgba(247,243,236,.45) 100%),
      url('/assets/images/backpic/back-1.webp');
    background-size: cover; background-position: center;
  }

  .step-num { width: 34px; min-width: 34px; height: 34px; border: 1.5px solid #B98A45; color: #B98A45; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; font-weight: 700;}

  .stat-bg { background-image: linear-gradient(120deg, rgba(15,62,59,.98), rgba(10,65,64,.94)), url('/assets/images/backpic/back-2.webp'); background-size: cover; background-position: center; color: #fff;}
  .cta-deep { background: linear-gradient(135deg, #0F5E5C 0%, #0A4140 100%), url('/assets/images/backpic/back-3.png'); background-position: center; background-size: cover;}

  .faq-item { border: 1px solid #E5DFD4; background: #fff; border-radius: 1rem; overflow: hidden; margin-bottom: 12px; }
  .faq-q { width: 100%; display: flex; align-items: flex-start; gap: 14px; text-align: left; padding: 18px 20px; min-height: 56px; font-weight: 600; }
  .faq-q:hover { background: #F9F6F0; }
  .faq-q-icon { margin-left: auto; color: #B98A45; font-size: 24px; font-weight: 300; transition: transform .2s ease; line-height: 1; flex-shrink: 0;}
  .faq-item.open .faq-q-icon { transform: rotate(45deg); color: #0F5E5C; }
  .faq-a { max-height: 0; padding: 0 20px; overflow: hidden; transition: max-height .22s ease; color: #5D574C; font-size: 15px; }
  .faq-item.open .faq-a { max-height: 320px; padding-bottom: 20px; }

  .form-field { width: 100%; border-radius: 12px; background: #fff; border: 1px solid #D9D2C6; padding: 12px 14px; color: #23211D; outline: none; transition: border-color .15s ease, box-shadow .15s ease;}
  .form-field:focus { border-color: #B98A45; box-shadow: 0 0 0 3px rgba(185,138,69,.16); }

  .footer-link { transition: color .15s ease; }
  .footer-link:hover { color: #F7F3EC; }

  .tag { background: rgba(15,94,92,.1); color: #0F5E5C; border-radius: 999px; font-size: 13px; padding: 5px 12px; display: inline-flex; align-items: center; }

  .cover-img { object-fit: cover; width:100%; height: 100%; transition: transform .24s ease; }
  .card-hover-line:hover .cover-img { transform: scale(1.03); }

  @media (max-width: 640px) {
    .container-x { padding-left: 16px; padding-right: 16px; }
  }

/* roulang page: article */
:root {
  --brand: #0F5E5C;
  --brand-dark: #0A4140;
  --cta: #E2531F;
  --cta-dark: #C44417;
  --paper: #F7F3EC;
  --night: #15322F;
  --ink: #23211D;
  --sub: #5D574C;
  --mut: #8A8378;
  --line: #E5DFD4;
  --moss: #B98A45;
}
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
.container-x {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  color: var(--ink);
  font-weight: 500;
  line-height: 68px;
  transition: color .18s ease;
  white-space: nowrap;
}
.nav-link:hover { color: var(--brand); }
.nav-link.active { color: var(--brand); font-weight: 600; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 12px;
  height: 2px;
  border-radius: 999px;
  background: var(--brand);
}
.footer-link { transition: color .18s ease; }
.footer-link:hover { color: #fff; opacity: .9; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--cta);
  color: #fff;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 22px;
  box-shadow: 0 8px 24px rgba(226, 83, 31, 0.20);
  transition: all .17s ease;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--cta-dark);
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(226, 83, 31, 0.26);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(226,83,31,.35);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #fff;
  color: var(--brand);
  border: 1px solid #ccd3cd;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 22px;
  transition: all .17s ease;
  box-shadow: 0 1px 2px rgba(32,28,20,.04);
}
.btn-secondary:hover {
  border-color: var(--brand);
  background: #F0F7F6;
  transform: translateY(-1px);
}
.btn-secondary:focus-visible {
  outline: 3px solid rgba(15,94,92,.25);
  outline-offset: 2px;
}
.badge-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  background: rgba(15,94,92,.08);
  border: 1px solid rgba(15,94,92,.12);
  line-height: 1.2;
  white-space: nowrap;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--sub);
  background: #F7F3EC;
  border: 1px solid var(--line);
  padding: 8px 15px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  transition: border-color .18s ease, color .18s ease, background .18s ease;
}
.tag-chip:hover {
  color: var(--brand);
  border-color: rgba(15,94,92,.35);
  background: rgba(15,94,92,.05);
}
.search-command {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 200px;
  height: 38px;
  background: #F7F3EC;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 12px 0 14px;
  color: #8A8378;
  font-size: 13px;
  transition: border-color .18s ease, background .18s ease, box-shadow .18s ease;
}
.search-command:hover {
  background: #fff;
  border-color: rgba(15,94,92,.30);
  box-shadow: 0 4px 16px rgba(32,28,20,.06);
}
.article-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(32,28,20,.04);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(32,28,20,.10);
  border-color: rgba(15,94,92,.25);
}
.article-card:hover img { transform: scale(1.035); }
.article-cover img {
  transition: transform .35s ease;
}
.article-body {
  font-size: 17px;
  line-height: 1.9;
  color: #3B352D;
  word-break: break-word;
  overflow-wrap: break-word;
}
.article-body > * + * { margin-top: 1.1em; }
.article-body p { line-height: 1.9; }
.article-body h2 {
  font-size: 1.55rem;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink);
  border-left: 4px solid var(--brand);
  padding-left: 16px;
  margin-top: 2em;
  margin-bottom: .7em;
}
.article-body h3 {
  font-size: 1.25rem;
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink);
  margin-top: 1.6em;
  margin-bottom: .55em;
}
.article-body ul,
.article-body ol {
  padding-left: 1.4rem;
  margin-top: 1.1em;
  margin-bottom: 1.1em;
}
.article-body ul li { list-style: square; margin: .4em 0; }
.article-body ol li { list-style: decimal; margin: .4em 0; }
.article-body blockquote {
  border-left: 4px solid var(--moss);
  background: rgba(185,138,69,.06);
  padding: 0.9rem 1.4rem;
  color: #5D574C;
  border-radius: 0 14px 14px 0;
}
.article-body a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color .16s ease;
}
.article-body a:hover { color: #0A4140; }
.article-body img {
  border-radius: 1.25rem;
  margin-top: 1.4rem;
  margin-bottom: 1.4rem;
}
.article-body strong { font-weight: 700; color: var(--ink); }
.breadcrumb-current {
  color: var(--mut);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 280px;
}
.recommend-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 3rem;
  line-height: 1.5rem;
}
.summary-clamp {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
@media (max-width: 640px) {
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 1.3rem; }
  .article-body h3 { font-size: 1.12rem; }
}
.article-layout { padding-top: 68px; }

/* roulang page: category1 */
:root {
  --pine: #0F5E5C;
  --pine-hover: #0A4A48;
  --pine-deep: #0A4140;
  --persimmon: #E2531F;
  --persimmon-hover: #C94616;
  --moss: #B98A45;
  --rice: #F7F3EC;
  --ink: #23211D;
  --iron: #5D574C;
  --faint: #8A8378;
  --line: #E5DFD4;
  --abyss: #15322F;
  --shadow-card: 0 1px 2px rgba(32,28,20,.04);
  --shadow-hover: 0 12px 32px rgba(32,28,20,.10);
  --shadow-btn: 0 8px 24px rgba(226,83,31,.22);
  --radius-card: 1rem;
  --radius-img: 1.25rem;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--rice);
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4,p,ul,dl,dd,figure {
  margin: 0;
  padding: 0;
}
ul {
  list-style: none;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}
input {
  font: inherit;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 3px;
  border-radius: 6px;
}
.container-x {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 20px;
}
.section-padding {
  padding-top: 64px;
  padding-bottom: 64px;
}
@media (min-width: 768px) {
  .section-padding {
    padding-top: 96px;
    padding-bottom: 96px;
  }
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 68px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  transition: color .18s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--pine);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .18s ease;
}
.nav-link:hover {
  color: var(--pine);
}
.nav-link.active {
  color: var(--pine);
}
.nav-link.active::after,
.nav-link:hover::after {
  transform: scaleX(1);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 11px 22px;
  transition: background .16s ease, color .16s ease, border-color .16s ease, box-shadow .16s ease, transform .16s ease;
}
.btn-primary {
  background: var(--persimmon);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  background: var(--persimmon-hover);
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(226,83,31,.28);
}
.btn-outline {
  background: #fff;
  color: var(--pine);
  border: 1px solid rgba(15,94,92,.35);
}
.btn-outline:hover {
  background: var(--rice);
  border-color: var(--pine);
  transform: translateY(-1px);
}
.btn-light-outline {
  border: 1px solid rgba(255,255,255,.45);
  color: #fff;
  background: rgba(255,255,255,.06);
}
.btn-light-outline:hover {
  background: rgba(255,255,255,.14);
  transform: translateY(-1px);
}
.search-command {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: 178px;
  height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--faint);
  font-size: 13px;
  transition: border-color .16s ease, box-shadow .16s ease;
}
.search-command:hover {
  border-color: rgba(15,94,92,.45);
  box-shadow: 0 0 0 3px rgba(15,94,92,.06);
}
.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 5px;
  border: 1px solid var(--line);
  background: var(--rice);
  color: var(--faint);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--pine);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--moss);
  border-radius: 2px;
}
.section-title {
  margin-top: 10px;
  font-size: 26px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--ink);
}
@media (min-width: 768px) {
  .section-title {
    font-size: 32px;
  }
}
.section-desc {
  margin-top: 14px;
  max-width: 720px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--iron);
}
.capability-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.capability-row:last-child {
  border-bottom: none;
  padding-bottom: 6px;
}
@media (min-width: 768px) {
  .capability-row {
    grid-template-columns: 72px 56px 1fr auto;
    gap: 20px;
    align-items: start;
    padding: 26px 0;
  }
}
.cap-index {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--moss);
  line-height: 24px;
}
.cap-icon {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(15,94,92,.09);
  color: var(--pine);
}
@media (min-width: 768px) {
  .cap-icon {
    display: inline-flex;
  }
}
.cap-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}
.cap-desc {
  color: var(--iron);
  font-size: 15px;
  line-height: 1.8;
}
.cap-flag {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  width: fit-content;
  border-radius: 999px;
  padding: 5px 13px;
  font-size: 13px;
  font-weight: 500;
  color: var(--pine);
  background: rgba(15,94,92,.08);
  border: 1px solid rgba(15,94,92,.10);
}
.check-icon {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 50%;
  background: rgba(15,94,92,.10);
  color: var(--pine);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.screen-shell {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 10px 10px 0;
  box-shadow: 0 24px 70px rgba(21,50,47,.10);
}
.screen-shell .screen-top {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px 9px;
}
.screen-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--line);
}
.screen-dot:first-child {
  background: var(--moss);
}
.screen-dot:nth-child(2) {
  background: rgba(226,83,31,.9);
}
.screen-dot:nth-child(3) {
  background: rgba(15,94,92,.8);
}
.screen-shell img {
  width: 100%;
  border-radius: 12px 12px 16px 16px;
  object-fit: cover;
}
.stat-number {
  font-size: 44px;
  line-height: 1;
  font-weight: 800;
  color: var(--persimmon);
  letter-spacing: -.02em;
}
@media (min-width: 768px) {
  .stat-number {
    font-size: 56px;
  }
}
.stat-unit {
  font-size: 16px;
  color: #fff;
  margin-top: 8px;
  opacity: .72;
}
.environment-list {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 4px 10px;
  font-size: 15px;
  color: var(--iron);
}
.environment-list strong {
  color: var(--ink);
  font-weight: 600;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: box-shadow .18s ease, border-color .18s ease;
}
.faq-item + .faq-item {
  margin-top: 12px;
}
.faq-item.open {
  border-color: rgba(15,94,92,.30);
  box-shadow: var(--shadow-card);
}
.faq-title {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  padding: 18px 18px 14px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
  min-height: 44px;
}
@media (min-width: 768px) {
  .faq-title {
    padding: 20px 22px 16px;
    font-size: 17px;
  }
}
.faq-icon {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(15,94,92,.09);
  color: var(--pine);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  line-height: 1;
  transition: transform .2s ease, background .2s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(226,83,31,.10);
  color: var(--persimmon);
}
.faq-answer {
  display: none;
  padding: 0 18px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--iron);
}
@media (min-width: 768px) {
  .faq-answer {
    padding: 0 22px 24px;
  }
}
.faq-item.open .faq-answer {
  display: block;
  animation: fadeIn .22s ease both;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
.mobile-menu {
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 90;
  overflow-y: auto;
  border-top: 1px solid var(--line);
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 300;
  background: var(--pine);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  transition: top .2s ease;
}
.skip-link:focus {
  top: 16px;
}
.search-panel-overlay {
  position: fixed;
  inset: 0;
  background: rgba(21,50,47,.68);
  backdrop-filter: blur(4px);
  z-index: 200;
  padding-top: 90px;
  display: none;
  animation: fadeIn .18s ease both;
}
.search-panel-overlay.open {
  display: block;
}
.search-panel {
  max-width: 680px;
  margin-inline: auto;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 30px 80px rgba(0,0,0,.20);
  overflow: hidden;
}
.search-panel input {
  width: 100%;
  border: none;
  outline: none;
  padding: 22px 24px;
  font-size: 16px;
  color: var(--ink);
  background: transparent;
}
.search-panel .suggest {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0 24px 22px;
}
.search-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--rice);
  font-size: 13px;
  color: var(--iron);
}

/* roulang page: category2 */
:root {
            --pine-teal: #0F5E5C;
            --pine-deep: #0A4140;
            --ripe-orange: #E2531F;
            --moss-gold: #B98A45;
            --ink: #23211D;
            --ink-secondary: #5D574C;
            --ink-weak: #8A8378;
            --paper: #F7F3EC;
            --card-white: #FFFFFF;
            --deep-slate: #15322F;
            --line: #E5DFD4;
            --radii-card: 1rem;
            --radii-btn: 9999px;
            --shadow-card: 0 1px 2px rgba(32, 28, 20, 0.04);
            --shadow-float: 0 12px 32px rgba(32, 28, 20, 0.10);
            --shadow-orange: 0 8px 24px rgba(226, 83, 31, 0.22);
        }

        /* Reset 与基础样式 */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--paper);
            color: var(--ink);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .18s ease, background-color .18s ease, border-color .18s ease, box-shadow .18s ease, transform .18s ease;
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
            transition: all .18s ease;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 16px;
            border: none;
            outline: none;
        }

        :focus-visible {
            outline: 2px solid var(--pine-teal);
            outline-offset: 2px;
        }

        /* 容器 */
        .container-x {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

        @media (min-width: 1024px) {
            .container-x {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .section-space {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        @media (min-width: 1024px) {
            .section-space {
                padding-top: 96px;
                padding-bottom: 96px;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: 68px;
            background: rgba(247, 243, 236, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(229, 223, 212, 0.8);
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            font-size: 15px;
            color: var(--ink);
            font-weight: 500;
            padding: 8px 2px;
            white-space: nowrap;
        }

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

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: var(--pine-teal);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--ripe-orange);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            padding: 11px 22px;
            border-radius: var(--radii-btn);
            box-shadow: var(--shadow-orange);
            transition: background-color .18s ease, transform .18s ease, box-shadow .18s ease;
        }

        .btn-primary:hover {
            background-color: #C7461A;
            transform: translateY(-1px);
            color: #fff;
            box-shadow: 0 10px 28px rgba(226, 83, 31, 0.28);
        }

        .btn-primary:active {
            transform: translateY(0px);
            background-color: #B33E15;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: #fff;
            color: var(--pine-teal);
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            padding: 11px 22px;
            border-radius: var(--radii-btn);
            border: 1px solid rgba(15, 94, 92, 0.22);
            transition: border-color .18s ease, background-color .18s ease, transform .18s ease;
        }

        .btn-secondary:hover {
            border-color: var(--pine-teal);
            background-color: rgba(15, 94, 92, 0.04);
            transform: translateY(-1px);
        }

        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: #fff;
            color: var(--ink);
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            padding: 11px 24px;
            border-radius: var(--radii-btn);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.10);
            transition: background-color .18s ease, transform .18s ease;
        }

        .btn-light:hover {
            background-color: #F7F3EC;
            transform: translateY(-1px);
            color: var(--ink);
        }

        /* 文字图标式链接 */
        .text-link {
            color: var(--pine-teal);
            font-weight: 500;
        }

        .text-link:hover {
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        /* 卡片通用样式 */
        .card-surface {
            background: var(--card-white);
            border-radius: var(--radii-card);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(229, 223, 212, 0.5);
            transition: transform .18s ease, box-shadow .18s ease;
        }

        .card-surface:hover {
            box-shadow: var(--shadow-float);
            transform: translateY(-2px);
        }

        /* 徽章 */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(15, 94, 92, 0.09);
            color: var(--pine-teal);
            font-size: 13px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 9999px;
            line-height: 1.6;
        }

        .badge-moss {
            background: rgba(185, 138, 69, 0.12);
            color: #8D6420;
        }

        .badge-orange {
            background: rgba(226, 83, 31, 0.1);
            color: #C7461A;
        }

        /* 页眉眉题 */
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--pine-teal);
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }

        .eyebrow::before {
            content: "";
            display: inline-block;
            width: 24px;
            height: 1px;
            background: var(--pine-teal);
            opacity: 0.5;
        }

        .eyebrow-center {
            justify-content: center;
        }

        .eyebrow-center::after {
            content: "";
            display: inline-block;
            width: 24px;
            height: 1px;
            background: var(--pine-teal);
            opacity: 0.5;
        }

        /* 细分割线 */
        .divider {
            height: 1px;
            background: var(--line);
            border: none;
            margin: 16px 0;
        }

        /* 表盘数字 */
        .stat-value {
            font-size: 2.5rem;
            line-height: 1.1;
            font-weight: 700;
            color: var(--ripe-orange);
            font-variant-numeric: tabular-nums;
        }

        @media (min-width: 768px) {
            .stat-value {
                font-size: 3rem;
            }
        }

        /* 步骤轴 */
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            border: 1.5px solid var(--moss-gold);
            color: var(--moss-gold);
            font-size: 18px;
            font-weight: 600;
            background: transparent;
            flex-shrink: 0;
        }

        @media (min-width: 1024px) {
            .step-number {
                width: 56px;
                height: 56px;
                font-size: 20px;
            }
        }

        /* FAQ 折叠 */
        .faq-item {
            background: var(--card-white);
            border: 1px solid rgba(229, 223, 212, 0.5);
            border-radius: var(--radii-card);
            overflow: hidden;
            margin-bottom: 12px;
            transition: box-shadow .18s ease, border-color .18s ease;
        }

        .faq-item[data-open="true"] {
            box-shadow: var(--shadow-card);
            border-color: rgba(15, 94, 92, 0.16);
        }

        .faq-button {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            min-height: 44px;
            background: transparent;
            border-radius: var(--radii-card);
        }

        .faq-button:hover {
            color: var(--pine-teal);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--moss-gold);
            border-radius: 8px;
            transition: transform .2s ease;
        }

        .faq-item[data-open="true"] .faq-icon {
            transform: rotate(45deg);
        }

        .faq-panel {
            display: none;
            padding: 0 24px 20px;
            color: var(--ink-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item[data-open="true"] .faq-panel {
            display: block;
            animation: fadeIn .25s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 页脚 */
        .footer-link {
            position: relative;
            transition: color .18s ease;
        }

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

        /* 兼容性表格 */
        .compat-table {
            width: 100%;
            border-collapse: collapse;
        }

        .compat-table th {
            font-weight: 600;
            color: var(--ink);
            padding: 14px 12px;
            text-align: left;
            border-bottom: 1px solid var(--line);
            font-size: 15px;
            background: #FAF7F1;
        }

        .compat-table td {
            padding: 14px 12px;
            border-bottom: 1px solid rgba(229, 223, 212, 0.5);
            color: var(--ink-secondary);
            font-size: 15px;
            vertical-align: middle;
        }

        .compat-table tr:last-child td {
            border-bottom: none;
        }

        .compat-table td:first-child {
            font-weight: 600;
            color: var(--ink);
        }

        /* 搜索命令条 */
        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid rgba(229, 223, 212, 0.8);
            border-radius: 9999px;
            padding: 8px 12px 8px 16px;
            font-size: 14px;
            color: var(--ink-weak);
            box-shadow: var(--shadow-card);
            cursor: pointer;
            transition: border-color .18s ease, box-shadow .18s ease;
            min-width: 204px;
        }

        .command-search:hover {
            border-color: rgba(15, 94, 92, 0.4);
            box-shadow: 0 4px 12px rgba(32, 28, 20, 0.06);
        }

        .kbd-key {
            background: rgba(15, 94, 92, 0.06);
            border: 1px solid rgba(15, 94, 92, 0.12);
            border-radius: 6px;
            padding: 2px 7px;
            font-size: 12px;
            color: var(--pine-teal);
            font-weight: 600;
        }

        /* 深色区块渐变背景 */
        .deep-gradient {
            background: linear-gradient(135deg, #0F5E5C 0%, #0A4140 70%, #15322F 100%);
        }

        /* 图片圆角与 hover 效果 */
        .img-cover-box {
            border-radius: 1.25rem;
            overflow: hidden;
        }

        /* 超宽图片 */
        .img-zoomable {
            transition: transform .4s ease;
        }

        .img-zoomable:hover {
            transform: scale(1.02);
        }

        /* 浅色分割竖线 */
        .step-line {
            width: 1px;
            background: rgba(185, 138, 69, 0.25);
            height: calc(100% - 16px);
            margin: 16px 0 0 24px;
        }

        /* 目录辅助样式 */
        .anchor-point {
            scroll-margin-top: 90px;
        }

        /* 自定义 mobile 菜单面板 */
        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: 68px;
            left: 0;
            right: 0;
            background: #FAF7F1;
            border-bottom: 1px solid rgba(229, 223, 212, 0.8);
            padding: 20px 20px 24px;
            box-shadow: 0 12px 32px rgba(32, 28, 20, 0.08);
        }

        @media (max-width: 1023px) {
            .mobile-menu-panel.open {
                display: block;
            }
        }

        @media (max-width: 520px) {
            .container-x {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

/* roulang page: category3 */
:root{
  --pine:#0F5E5C;
  --pine-deep:#0A4140;
  --orange:#E2531F;
  --gold:#B98A45;
  --paper:#F7F3EC;
  --ink:#23211D;
  --dim:#5D574C;
  --faint:#8A8378;
  --line:#E5DFD4;
  --card:#FFFFFF;
  --dark-teal:#15322F;
  --dark-footer:#102927;
}
html{
  scroll-behavior:smooth;
}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Hiragino Sans GB",sans-serif;
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.container-x{
  width:100%;
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:20px;
  padding-right:20px;
}
section{
  position:relative;
  scroll-margin-top:96px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--orange);
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
}
.section-kicker{
  color:var(--orange);
  font-size:14px;
  font-weight:600;
  letter-spacing:.14em;
}
.nav-link{
  position:relative;
  padding:8px 2px;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  transition:color .18s ease;
}
.nav-link:hover{
  color:var(--pine);
}
.nav-link.active{
  color:var(--pine);
  font-weight:600;
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--pine);
}
.command-search{
  display:flex;
  align-items:center;
  gap:9px;
  width:205px;
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--card);
  color:var(--faint);
  font-size:13px;
  box-shadow:0 1px 2px rgba(32,28,20,.04);
  transition:border-color .18s ease, box-shadow .18s ease;
  cursor:pointer;
}
.command-search:hover{
  border-color:var(--pine);
}
.command-search kbd{
  margin-left:auto;
  font-family:inherit;
  font-size:11px;
  border:1px solid var(--line);
  border-radius:6px;
  padding:2px 5px;
  background:var(--paper);
  color:var(--faint);
}
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--orange);
  color:#fff;
  border:1px solid transparent;
  border-radius:999px;
  padding:9px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  box-shadow:0 8px 24px rgba(226,83,31,.22);
  transition:background .18s ease, transform .18s ease, box-shadow .18s ease;
}
.btn-primary:hover{
  background:#C74716;
  transform:translateY(-1px);
  box-shadow:0 10px 26px rgba(226,83,31,.26);
}
.btn-primary:focus-visible{
  outline:3px solid rgba(226,83,31,.3);
  outline-offset:2px;
}
.btn-outline{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:transparent;
  color:var(--pine);
  border:1px solid rgba(15,94,92,.35);
  border-radius:999px;
  padding:9px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  transition:border-color .18s ease, color .18s ease, transform .18s ease;
}
.btn-outline:hover{
  border-color:var(--pine);
  color:var(--pine-deep);
  transform:translateY(-1px);
}
.btn-dark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--pine);
  color:#fff;
  border:1px solid transparent;
  border-radius:999px;
  padding:9px 24px;
  font-size:15px;
  font-weight:600;
  transition:background .18s ease, transform .18s ease;
}
.btn-dark:hover{
  background:var(--pine-deep);
  transform:translateY(-1px);
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  background:rgba(15,94,92,.10);
  color:var(--pine);
  border-radius:999px;
  font-size:13px;
  font-weight:500;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:1rem;
  box-shadow:0 1px 2px rgba(32,28,20,.04);
  transition:box-shadow .18s ease, transform .18s ease, border-color .18s ease;
}
.icon-box{
  width:44px;
  height:44px;
  border-radius:14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(15,94,92,.10);
  color:var(--pine);
}
.faq-panel{
  display:none;
}
.faq-item.faq-open .faq-panel{
  display:block;
}
.faq-icon {
  transition:transform .2s ease;
}
.faq-item.faq-open .faq-icon{
  transform:rotate(45deg);
}
.pill-tag{
  display:inline-flex;
  align-items:center;
  white-space:nowrap;
  border-radius:999px;
  padding:4px 12px;
  font-size:12px;
  font-weight:500;
}
.timeline{
  position:relative;
}
.timeline::before{
  content:"";
  position:absolute;
  left:11px;
  top:8px;
  bottom:8px;
  width:1px;
  background:linear-gradient(to bottom, var(--gold), rgba(185,138,69,.25));
}
.timeline-item{
  position:relative;
}
.timeline-dot{
  position:absolute;
  left:0;
  top:6px;
  width:23px;
  height:23px;
  border-radius:999px;
  background:var(--card);
  border:2px solid var(--gold);
  display:flex;
  align-items:center;
  justify-content:center;
}
.timeline-dot .inner{
  width:7px;
  height:7px;
  border-radius:99px;
  background:var(--gold);
}
.timeline-card{
  margin-left:48px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:0 1px 2px rgba(32,28,20,.04);
  padding:22px 22px 20px;
  transition:box-shadow .18s ease, transform .18s ease;
}
.timeline-card:hover{
  box-shadow:0 12px 32px rgba(32,28,20,.10);
  transform:translateY(-1px);
}
.timeline-card.latest{
  border-color:rgba(226,83,31,.45);
  box-shadow:0 12px 32px rgba(32,28,20,.08);
}
.timeline-card.latest:hover{
  box-shadow:0 15px 38px rgba(226,83,31,.14);
}
.version-dot{
  width:34px;
  height:34px;
  border-radius:12px;
  background:rgba(15,94,92,.12);
  color:var(--pine);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  font-size:13px;
}
.deep-stats .stat-card{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);
  border-radius:20px;
  padding:22px 18px;
}
.footer-link{
  transition:color .18s ease;
}
.grid-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px 22px;
}
@media(max-width:640px){
  .grid-list{
    grid-template-columns:1fr;
  }
}
.mobile-search-trigger{
  display:flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
}
.mobile-search-overlay{
  position:fixed;
  inset:0;
  z-index:80;
  display:none;
  align-items:flex-start;
  justify-content:center;
  padding:8vh 16px 0;
  background:rgba(21,50,47,.58);
  backdrop-filter:blur(6px);
}
.mobile-search-overlay.show{
  display:flex;
}
.mobile-search-overlay .search-shell{
  width:100%;
  max-width:560px;
  background:#fff;
  border-radius:20px;
  padding:8px 14px;
  box-shadow:0 24px 56px rgba(20,16,8,.18);
}
.hero-backpic::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg, rgba(247,243,236,.98) 0%, rgba(247,243,236,.94) 48%, rgba(247,243,236,.72) 100%),
    url("/assets/images/backpic/back-1.webp") center right / cover no-repeat;
  z-index:-1;
}
.dark-cta-bg{
  background:
    linear-gradient(120deg, rgba(15,94,92,.92), rgba(21,50,47,.96)),
    url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
}
@media(max-width:767px){
  .timeline-card{
    margin-left:40px;
    padding:18px 16px;
  }
}

/* roulang page: category4 */
:root {
    --brand: #0F5E5C;
    --brand-dark: #0A4140;
    --deep: #15322F;
    --accent: #E2531F;
    --accent-dark: #C74317;
    --moss: #B98A45;
    --paper: #F7F3EC;
    --ink: #23211D;
    --muted: #5D574C;
    --faint: #8A8378;
    --line: #E5DFD4;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Hiragino Sans GB", system-ui, sans-serif;
    background-color: var(--paper);
    color: var(--ink);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  *, *::before, *::after {
    box-sizing: border-box;
  }
  img {
    max-width: 100%;
    display: block;
  }
  a {
    text-decoration: none;
    color: inherit;
  }
  button {
    font-family: inherit;
  }
  :focus-visible {
    outline: 2px solid var(--moss);
    outline-offset: 2px;
  }

  .container-x {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
  }
  @media (min-width: 768px) {
    .container-x {
      padding-left: 32px;
      padding-right: 32px;
    }
  }

  .nav-link {
    color: var(--ink);
    font-size: 15px;
    line-height: 24px;
    transition: color .18s ease;
    border-radius: 8px;
  }
  .nav-link:hover {
    color: var(--brand);
  }
  .nav-link.active {
    color: var(--brand);
    font-weight: 600;
  }
  @media (min-width: 1024px) {
    .nav-link {
      display: inline-flex;
      align-items: center;
      height: 100%;
      position: relative;
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      border-radius: 999px;
      background: var(--brand);
    }
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #fff;
    background: var(--accent);
    border-radius: 999px;
    padding: 10px 22px;
    font-size: 15px;
    font-weight: 600;
    line-height: 24px;
    box-shadow: 0 8px 24px rgba(226, 83, 31, .22);
    transition: all .18s ease;
  }
  .btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
  }
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--ink);
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 10px 22px;
    font-size: 15px;
    font-weight: 600;
    line-height: 24px;
    transition: all .18s ease;
  }
  .btn-secondary:hover {
    border-color: var(--brand);
    color: var(--brand);
    transform: translateY(-2px);
  }

  .faq-answer {
    animation: fadeIn .2s ease;
  }
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .faq-icon {
    transition: transform .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
  }
  .faq-toggle[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
  }
  .footer-link {
    transition: color .18s ease;
  }
  .footer-link:hover {
    color: #fff;
  }