/* roulang page: index */
:root {
  --bg: #F5F8FB;
  --band: #E7F1FA;
  --card: #FFFFFF;
  --primary: #2F6FAD;
  --primary-deep: #1E4E86;
  --text: #243246;
  --muted: #5C6B7C;
  --line: #E2EAF2;
  --accent: #D98A3A;
  --green: #3E8F6E;
  --green-bg: #E5F4ED;
  --chip: #E7F1FA;
  --shadow: 0 12px 32px rgba(30, 78, 134, 0.08);
  --shadow-hover: 0 16px 36px rgba(30, 78, 134, 0.12);
  --radius-card: 18px;
  --radius-input: 10px;
  --radius-badge: 999px;
  --radius-btn: 12px;
  --pad-block: 96px;
  --max: 1180px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
}
img { max-width: 100%; display: block; height: auto; }
button, input, select, textarea {
  font-family: inherit;
  font-size: 16px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary); text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-weight: 700; line-height: 1.35; color: var(--primary-deep); }
p { margin-bottom: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container, .container-xl, .container-xxl { padding-left: 20px; padding-right: 20px; }
.block { padding: var(--pad-block) 0; }
.bg-plain { background: var(--bg); }
.bg-white { background: var(--card); }
.bg-band { background: var(--band); }
.section-title { font-size: 32px; margin-bottom: 14px; }
.section-lead { max-width: 720px; color: var(--text); margin-bottom: 28px; }
.muted { color: var(--muted); }
.copy-limit { max-width: 640px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.nav-bar {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.brand-lock {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.25;
  color: var(--primary-deep);
  text-decoration: none;
  position: relative;
  z-index: 2;
}
.brand-lock:hover { color: var(--primary-deep); text-decoration: none; }
.brand-line { font-size: 20px; font-weight: 700; letter-spacing: 0.04em; }
.brand-sub { font-size: 13px; font-weight: 700; color: var(--primary); margin-top: 2px; }
.nav-toggle {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--primary-deep);
  border-radius: 2px;
}
.nav-side { display: flex; align-items: center; gap: 6px; }
.nav-side a {
  color: var(--primary-deep);
  font-weight: 500;
  padding: 8px 12px;
  text-decoration: none;
  white-space: nowrap;
}
.nav-side a:hover { text-decoration: underline; text-underline-offset: 6px; }
.nav-side a.is-active {
  color: var(--primary);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 6px;
}
@media (min-width: 992px) {
  .site-header .container-xl { position: relative; }
  .nav-toggle { display: none; }
  #navMain.collapse {
    display: flex !important;
    position: absolute;
    left: 20px;
    right: 20px;
    top: 0;
    height: 78px;
    align-items: center;
    justify-content: space-between;
    pointer-events: none;
    z-index: 1;
  }
  #navMain .nav-side { pointer-events: auto; }
}
@media (min-width: 992px) and (max-width: 1199.98px) {
  .nav-side a { letter-spacing: -0.02em; font-size: 14px; padding: 6px 8px; }
  .brand-line { font-size: 18px; }
}
@media (max-width: 991.98px) {
  #navMain { background: var(--bg); border-top: 1px solid var(--line); }
  .nav-side { flex-direction: column; align-items: stretch; width: 100%; gap: 0; }
  .nav-side a { padding: 12px 4px; border-bottom: 1px solid var(--line); }
}

.hero-sec {
  padding: 72px 0 88px;
  background:
    radial-gradient(880px 380px at 8% -20%, rgba(47, 111, 173, 0.14), transparent 62%),
    radial-gradient(640px 320px at 96% 0%, rgba(217, 138, 58, 0.12), transparent 58%),
    var(--bg);
}
.hero-sec h1 { font-size: 46px; margin-bottom: 0; }
.h1-mark { width: 52px; height: 4px; border-radius: var(--radius-badge); background: var(--primary); margin: 16px 0; }
.lead-line { font-size: 18px; color: var(--primary-deep); font-weight: 700; margin-bottom: 14px; }
.hero-intro { margin-bottom: 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn-main, .btn-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  line-height: 1.2;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-main { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-main:hover { background: var(--primary-deep); border-color: var(--primary-deep); color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-main:active { transform: translateY(0); background: var(--primary-deep); }
.btn-main:disabled { opacity: .45; transform: none; cursor: not-allowed; }
.btn-line { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-line:hover { color: var(--primary-deep); border-color: var(--primary-deep); text-decoration: none; transform: translateY(-1px); }
.btn-line:active { transform: translateY(0); }

.sample-stage { position: relative; min-height: 430px; padding-bottom: 28px; }
.sample-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 28px 28px 24px;
}
.sample-card:hover { box-shadow: var(--shadow-hover); }
.sample-top { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.badge-chip, .badge-new {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: var(--radius-badge);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}
.badge-chip { background: var(--chip); color: var(--primary-deep); }
.badge-new { background: var(--green-bg); color: var(--green); }
.sample-time { font-size: 28px; font-weight: 700; color: var(--primary-deep); letter-spacing: 0.04em; margin-bottom: 8px; }
.sample-line { color: var(--text); margin-bottom: 6px; }
.sample-rows { margin-top: 18px; display: grid; gap: 10px; }
.sample-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
.sample-row span { color: var(--muted); }
.sample-float {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 230px;
  padding: 18px 18px 16px;
}
.float-k { color: var(--muted); font-size: 13px; margin-bottom: 4px; }
.float-v { font-size: 20px; color: var(--primary-deep); font-weight: 700; }

.metric-row { display: grid; grid-template-columns: 1.3fr .9fr 1.05fr .85fr; gap: 14px; }
.metric-item {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 22px 20px;
  min-height: 132px;
}
.metric-item:hover { box-shadow: var(--shadow-hover); }
.metric-k { font-size: 18px; font-weight: 700; color: var(--primary-deep); margin-bottom: 8px; }
.metric-v { color: var(--muted); font-size: 14px; }

.feature-grid { display: grid; grid-template-columns: 1.45fr .8fr; gap: 18px; align-items: stretch; }
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 28px 30px;
}
.feature-card:hover { box-shadow: var(--shadow-hover); }
.feature-main { min-height: 100%; display: flex; flex-direction: column; gap: 22px; }
.feature-block + .feature-block { padding-top: 22px; border-top: 1px solid var(--line); }
.feature-k { font-size: 20px; margin-bottom: 8px; }
.feature-side { display: grid; gap: 18px; }
.spec-wrap {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  overflow: hidden;
}
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { padding: 22px 26px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { width: 28%; color: var(--primary-deep); font-size: 18px; font-weight: 700; background: #F8FBFE; }
.spec-table td { color: var(--text); }

.scene-list { display: grid; gap: 14px; }
.scene-item {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 22px 24px;
}
.scene-item:hover { box-shadow: var(--shadow-hover); }
.scene-item:nth-child(2) { margin-left: 36px; }
.scene-item:nth-child(3) { margin-right: 48px; }
.scene-item:nth-child(4) { margin-left: 18px; }
.scene-no { font-size: 22px; font-weight: 700; color: var(--primary); }
.scene-item h3 { font-size: 20px; margin-bottom: 6px; }

.device-row { display: flex; align-items: flex-end; gap: 18px; }
.device-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 20px;
}
.device-card:hover { box-shadow: var(--shadow-hover); }
.device-phone { width: 220px; flex: none; }
.device-pad { width: 320px; flex: none; }
.device-desk { flex: 1; min-width: 0; }
.device-name { font-weight: 700; color: var(--primary-deep); margin-bottom: 10px; }
.device-screen {
  background: var(--band);
  border-radius: 12px;
  padding: 16px;
  min-height: 120px;
  color: var(--text);
}
.device-phone .device-screen { font-size: 15px; }
.device-pad .device-screen { font-size: 18px; }
.device-desk .device-screen { font-size: 22px; }
.device-meta { margin-top: 10px; color: var(--muted); font-size: 14px; }

.demo-shot {
  background: var(--band);
  border-radius: var(--radius-card);
  padding: 16px;
  border: 1px solid var(--line);
}
.demo-img { width: 100%; border-radius: 12px; background: #fff; }
.step-list { display: grid; gap: 14px; }
.step-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  align-items: start;
}
.step-no {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--chip);
  color: var(--primary-deep);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-item h3 { font-size: 18px; margin-bottom: 4px; }
.note-band {
  border-radius: var(--radius-card);
  background: #fff;
  border: 1px dashed #B7D0E6;
  padding: 22px 26px;
  color: var(--primary-deep);
}

.case-row {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 28px 30px;
  margin-bottom: 16px;
}
.case-row:hover { box-shadow: var(--shadow-hover); }
.case-label strong { display: block; font-size: 22px; color: var(--primary-deep); margin-top: 10px; line-height: 1.35; }
.case-lines li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.case-lines li:last-child { border-bottom: 0; }

.price-layout { display: grid; grid-template-columns: 1.25fr .9fr; gap: 18px; align-items: stretch; }
.price-side { display: grid; gap: 18px; }
.price-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 26px 26px 22px;
}
.price-card:hover { box-shadow: var(--shadow-hover); }
.price-main { border-color: var(--accent); padding: 32px 32px 28px; }
.price-name { font-size: 20px; font-weight: 700; color: var(--primary-deep); }
.price-num { font-size: 40px; line-height: 1.1; font-weight: 700; color: var(--accent); margin: 10px 0 6px; }
.price-num small { font-size: 16px; color: var(--muted); font-weight: 500; margin-left: 4px; }
.price-side .price-num { font-size: 28px; color: var(--primary-deep); }
.price-fields { margin: 14px 0 18px; }
.price-fields div { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-top: 1px solid var(--line); font-size: 14px; }
.price-fields span { color: var(--muted); }

.review-wall { columns: 3; column-gap: 16px; }
.review-card {
  break-inside: avoid;
  display: inline-block;
  width: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  padding: 22px 22px 18px;
  margin: 0 0 16px;
}
.review-card:hover { box-shadow: var(--shadow-hover); }
.review-card p { margin-bottom: 12px; }
.review-name { color: var(--primary); font-weight: 700; font-size: 14px; }
.review-card:nth-child(2) { padding-bottom: 36px; }
.review-card:nth-child(5) { padding-bottom: 32px; }

.voice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.voice-card {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 30px 28px;
}
.voice-card:hover { box-shadow: var(--shadow-hover); }
.voice-card h3 { font-size: 20px; margin-bottom: 8px; }
.voice-meta { color: var(--muted); font-size: 14px; margin-bottom: 12px; }

.news-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; }
.news-item { display: block; padding: 16px 0; border-bottom: 1px solid var(--line); color: inherit; text-decoration: none; }
.news-item:hover { color: inherit; text-decoration: none; }
.news-item:hover .news-title { text-decoration: underline; }
.news-title { color: var(--primary-deep); font-weight: 700; font-size: 18px; line-height: 1.45; }
.news-item p { color: var(--muted); margin-top: 4px; }
.news-feature {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  border-top: 4px solid var(--primary);
  box-shadow: var(--shadow);
  padding: 28px 26px;
  height: 100%;
}
.news-feature:hover { box-shadow: var(--shadow-hover); }
.news-feature h3 { font-size: 22px; margin: 10px 0; }
.news-date { color: var(--muted); font-size: 14px; }

.entry-card {
  display: grid;
  grid-template-columns: 1.4fr .7fr;
  gap: 18px;
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 32px;
  color: inherit;
  text-decoration: none;
}
.entry-card:hover { box-shadow: var(--shadow-hover); color: inherit; text-decoration: none; }
.entry-card h3 { font-size: 26px; margin-bottom: 10px; }
.entry-side {
  background: var(--band);
  border-radius: 14px;
  padding: 18px;
  color: var(--primary-deep);
  font-weight: 700;
}
.text-back { display: inline-block; margin-top: 16px; font-weight: 700; }

.open-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.tier-form { display: grid; gap: 12px; }
.form-row { display: grid; gap: 6px; }
.form-row label { font-weight: 700; color: var(--primary-deep); font-size: 14px; }
.form-row input, .form-row select {
  width: 100%;
  height: 48px;
  border-radius: var(--radius-input);
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  padding: 0 12px;
}
.form-row input:focus, .form-row select:focus { border-color: var(--primary); }
.form-row input.is-error, .form-row select.is-error { border-color: var(--primary-deep); }
.form-msg { min-height: 1.8em; color: var(--primary-deep); font-weight: 700; }
.form-msg.is-error { color: var(--text); font-weight: 500; }

.faq-acc {
  background: transparent;
  --bs-accordion-border-color: transparent;
  --bs-accordion-btn-focus-box-shadow: none;
  --bs-accordion-active-color: #1E4E86;
  --bs-accordion-btn-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231E4E86'%3E%3Cpath d='M1.5 5.5 8 12l6.5-6.5' stroke='%231E4E86' stroke-width='1.4' fill='none'/%3E%3C/svg%3E");
  --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232F6FAD'%3E%3Cpath d='M1.5 5.5 8 12l6.5-6.5' stroke='%232F6FAD' stroke-width='1.4' fill='none'/%3E%3C/svg%3E");
}
.faq-acc .accordion-item { background: #fff; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; }
.faq-acc .accordion-button {
  background: #fff;
  color: var(--text);
  font-weight: 700;
  font-size: 17px;
  box-shadow: none;
  padding: 20px 8px 20px 16px;
}
.faq-acc .accordion-button:not(.collapsed) {
  color: var(--primary-deep);
  background: #fff;
  box-shadow: inset 3px 0 0 var(--primary);
}
.faq-acc .accordion-button:focus { box-shadow: inset 3px 0 0 var(--primary); }
.faq-acc .accordion-body { color: var(--muted); padding: 0 16px 18px 18px; }

.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 48px 0 28px; }
.foot-brand .brand-lock { align-items: flex-start; margin-bottom: 10px; }
.foot-links { display: grid; gap: 8px; }
.foot-links a { color: var(--primary-deep); }
.foot-title { font-weight: 700; color: var(--primary-deep); margin-bottom: 10px; }
.copyline { margin-top: 28px; color: var(--muted); font-size: 14px; }
.techline { color: var(--muted); font-size: 13px; }

@media (max-width: 1024px) {
  .section-title { font-size: 28px; }
  .hero-sec h1 { font-size: 38px; }
  .scene-item:nth-child(2), .scene-item:nth-child(3), .scene-item:nth-child(4) { margin-left: 0; margin-right: 0; }
}
@media (max-width: 991.98px) {
  .feature-grid, .price-layout, .news-layout, .voice-grid, .open-grid, .entry-card, .case-row { display: block; }
  .price-side, .feature-side { margin-top: 16px; }
  .news-feature, .voice-card, .case-row { margin-top: 16px; }
  .sample-float { position: static; width: auto; margin-top: 14px; }
  .sample-stage { min-height: 0; padding-bottom: 0; }
  .device-row { flex-direction: column; align-items: stretch; }
  .device-phone { width: 72%; }
  .device-pad { width: 86%; }
  .device-desk { width: 100%; }
}
@media (max-width: 768px) {
  .block { padding: 36px 0; }
  .hero-sec { padding: 36px 0 40px; }
  .hero-sec h1 { font-size: 32px; }
  .section-title { font-size: 26px; }
  .metric-row { display: flex; overflow-x: auto; gap: 12px; padding-bottom: 6px; scroll-snap-type: x mandatory; }
  .metric-item { min-width: 220px; scroll-snap-align: start; }
  .review-wall { columns: 1; }
  .spec-table th, .spec-table td { display: block; width: 100%; padding: 12px 16px; }
  .spec-table th { background: transparent; padding-bottom: 0; }
  .scene-item { grid-template-columns: 56px 1fr; }
}
@media (max-width: 520px) {
  .container, .container-xl, .container-xxl { padding-left: 16px; padding-right: 16px; }
  .hero-sec h1 { font-size: 30px; }
  .hero-actions .btn-main, .hero-actions .btn-line, .price-card .btn-main { width: 100%; }
  .device-phone, .device-pad { width: 100%; }
  .price-num { font-size: 34px; }
  .entry-card, .feature-card, .price-card, .voice-card { padding: 22px 18px; }
}

/* roulang page: category1 */
:root {
 --bg: #F5F8FB;
 --band: #E7F1FA;
 --card: #FFFFFF;
 --primary: #2F6FAD;
 --primary-deep: #1E4E86;
 --text: #243246;
 --muted: #5C6B7C;
 --line: #E2EAF2;
 --accent: #D98A3A;
 --green: #3E8F6E;
 --green-bg: #E5F4ED;
 --chip: #E7F1FA;
 --shadow: 0 12px 32px rgba(30, 78, 134, 0.08);
 --shadow-hover: 0 16px 36px rgba(30, 78, 134, 0.12);
 --radius-card: 18px;
 --radius-input: 10px;
 --radius-badge: 999px;
 --radius-btn: 12px;
 --pad-block: 96px;
 --max: 1180px;
}
/* roulang page: category1 */
html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
 margin: 0;
 background: var(--bg);
 color: var(--text);
 font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
 font-size: 16px;
 font-weight: 400;
 line-height: 1.8;
}
img { max-width: 100%; display: block; height: auto; }
button, input, select, textarea { font-family: inherit; font-size: 16px; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary); text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
 outline: 2px solid var(--accent);
 outline-offset: 2px;
}
h1, h2, h3 { font-weight: 700; line-height: 1.35; color: var(--text); margin: 0; }
p { margin: 0 0 12px; }
.container, .container-xl { max-width: var(--max); padding-left: 20px; padding-right: 20px; }
.section-title { font-size: 30px; margin-bottom: 12px; }
.section-lead { max-width: 720px; margin-bottom: 28px; }
.muted { color: var(--muted); }
.site-header {
 position: sticky;
 top: 0;
 z-index: 50;
 background: #fff;
 border-bottom: 1px solid var(--line);
}
.nav-bar {
 min-height: 78px;
 display: flex;
 align-items: center;
 justify-content: center;
 position: relative;
}
.brand-lock {
 display: flex;
 flex-direction: column;
 align-items: center;
 line-height: 1.25;
 color: var(--primary-deep);
 text-decoration: none;
 position: relative;
 z-index: 2;
}
.brand-lock:hover { color: var(--primary-deep); text-decoration: none; }
.brand-line { font-size: 20px; font-weight: 700; letter-spacing: 0.04em; }
.brand-sub { font-size: 13px; font-weight: 700; color: var(--primary); margin-top: 2px; }
.nav-toggle {
 position: absolute;
 right: 0;
 top: 50%;
 transform: translateY(-50%);
 width: 44px;
 height: 44px;
 border: 1px solid var(--line);
 border-radius: 12px;
 background: #fff;
 display: none;
 flex-direction: column;
 justify-content: center;
 align-items: center;
 gap: 5px;
 padding: 0;
 z-index: 3;
 cursor: pointer;
}
.nav-toggle span {
 display: block;
 width: 18px;
 height: 2px;
 background: var(--primary-deep);
 border-radius: 2px;
}
.nav-side { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-side a {
 color: var(--primary-deep);
 font-weight: 500;
 padding: 8px 12px;
 text-decoration: none;
 white-space: nowrap;
}
.nav-side a:hover { text-decoration: underline; text-underline-offset: 6px; }
.nav-side a.is-active {
 color: var(--primary);
 font-weight: 700;
 text-decoration: underline;
 text-underline-offset: 6px;
}
.site-header .container-xl { position: relative; }
.btn-main, .btn-line, .chip-btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 border-radius: var(--radius-btn);
 font-weight: 700;
 line-height: 1.2;
 transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
 text-decoration: none;
 cursor: pointer;
}
.btn-main, .btn-line { min-height: 48px; padding: 10px 22px; border: 1px solid transparent; }
.btn-main { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-main:hover { background: var(--primary-deep); border-color: var(--primary-deep); color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-main:active { transform: translateY(0); background: var(--primary-deep); color: #fff; }
.btn-main:disabled { opacity: .45; transform: none; cursor: not-allowed; }
.btn-line { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-line:hover { color: var(--primary-deep); border-color: var(--primary-deep); text-decoration: none; transform: translateY(-1px); }
.badge-chip, .badge-new {
 display: inline-flex;
 align-items: center;
 min-height: 26px;
 padding: 0 10px;
 border-radius: var(--radius-badge);
 font-size: 13px;
 font-weight: 700;
 line-height: 1;
 white-space: nowrap;
}
.badge-chip { background: var(--chip); color: var(--primary-deep); }
.badge-new { background: var(--green-bg); color: var(--green); }
.cat-head { padding: 36px 0 32px; background: var(--bg); }
.cat-head-grid {
 display: grid;
 grid-template-columns: minmax(0, 1.45fr) minmax(220px, .62fr);
 gap: 28px;
 align-items: end;
}
.cat-head h1 { font-size: 44px; max-width: 640px; }
.cat-head h1::after {
 content: "";
 display: block;
 width: 72px;
 height: 4px;
 margin-top: 14px;
 border-radius: 4px;
 background: var(--primary);
}
.scope-line { margin: 16px 0 0; max-width: 640px; font-size: 17px; }
.result-box {
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 padding: 22px 24px 18px;
}
.result-kicker { font-size: 13px; font-weight: 700; color: var(--primary-deep); margin-bottom: 4px; }
.result-num { font-size: 40px; font-weight: 700; color: var(--primary); line-height: 1.1; margin: 0; }
.result-unit { font-size: 16px; margin-left: 4px; color: var(--primary-deep); }
.result-sort { margin: 8px 0 0; font-weight: 700; }
.filter-sec { background: var(--band); padding: 28px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.filter-head { margin-bottom: 16px; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: flex-end; }
.filter-group { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.filter-label { font-size: 14px; font-weight: 700; color: var(--primary-deep); }
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-btn {
 min-height: 40px;
 padding: 6px 14px;
 border-radius: var(--radius-badge);
 border: 1px solid #D5E2EE;
 background: #fff;
 color: var(--primary-deep);
 font-size: 14px;
}
.chip-btn:hover { border-color: var(--primary); color: var(--primary-deep); text-decoration: none; background: #F8FBFE; }
.chip-btn.is-on, .chip-btn.is-on:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.field {
 width: 100%;
 min-width: 220px;
 min-height: 44px;
 padding: 8px 14px;
 border: 1px solid #D5E2EE;
 border-radius: var(--radius-input);
 background: #fff;
 color: var(--text);
}
.select-wrap { position: relative; }
.select-wrap select {
 appearance: none;
 padding-right: 36px;
 background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%231E4E86' stroke-width='1.6'/%3E%3C/svg%3E");
 background-repeat: no-repeat;
 background-position: right 12px center;
}
.field:focus { border-color: var(--primary); outline: 2px solid var(--accent); outline-offset: 1px; }
.list-sec { padding: var(--pad-block) 0; background: var(--bg); }
.entry-list { display: grid; gap: 18px; }
.entry {
 display: grid;
 grid-template-columns: 300px minmax(0, 1fr);
 gap: 22px;
 align-items: center;
 background: var(--card);
 border: 1px solid var(--line);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 padding: 18px;
 transition: box-shadow .2s ease;
}
.entry:hover { box-shadow: var(--shadow-hover); }
.entry[hidden] { display: none !important; }
.cover {
 position: relative;
 border-radius: 12px;
 overflow: hidden;
 background: var(--band);
}
.cover img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.cover .badge-chip { position: absolute; left: 10px; top: 10px; }
.entry h3 {
 font-size: 20px;
 margin-bottom: 8px;
 display: -webkit-box;
 -webkit-line-clamp: 2;
 -webkit-box-orient: vertical;
 overflow: hidden;
}
.meta { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; color: var(--muted); font-size: 14px; margin-bottom: 10px; }
.entry-body p { margin-bottom: 12px; }
.entry-body > a, .rank-go { font-weight: 700; }
.empty-note {
 margin: 8px 0 0;
 padding: 28px;
 background: #fff;
 border: 1px dashed var(--line);
 border-radius: var(--radius-card);
 color: var(--primary-deep);
}
.empty-note[hidden] { display: none !important; }
.field-sec { background: var(--band); padding: var(--pad-block) 0; }
.field-panel, .faq-list, .rank-item, .result-box {
 transition: box-shadow .2s ease;
}
.field-panel {
 background: #fff;
 border: 1px solid var(--line);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 padding: 8px 32px 12px;
}
.field-panel:hover { box-shadow: var(--shadow-hover); }
.def-list { margin: 0; }
.def-list div {
 display: grid;
 grid-template-columns: 168px minmax(0, 1fr);
 gap: 18px;
 padding: 16px 0;
 border-bottom: 1px solid var(--line);
}
.def-list div:last-child { border-bottom: 0; }
.def-list dt { margin: 0; font-weight: 700; color: var(--primary-deep); }
.def-list dd { margin: 0; }
.hot-sec { padding: var(--pad-block) 0; background: var(--bg); }
.rank-list { display: grid; gap: 12px; }
.rank-item {
 display: grid;
 grid-template-columns: 52px minmax(0, 1fr) auto;
 gap: 16px;
 align-items: center;
 background: #fff;
 border: 1px solid var(--line);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 padding: 16px 20px;
}
.rank-item:hover { box-shadow: var(--shadow-hover); }
.rank-no { font-size: 22px; font-weight: 700; color: var(--accent); line-height: 1; }
.rank-item h3 { font-size: 18px; margin-bottom: 2px; }
.rank-item p { margin: 0; color: var(--muted); font-size: 14px; }
.timeline-sec { background: var(--band); padding: var(--pad-block) 0; }
.time-list { margin: 8px 0 0 8px; padding: 0; list-style: none; border-left: 2px solid #D3E2F0; }
.time-item { position: relative; padding: 0 0 26px 26px; }
.time-item:last-child { padding-bottom: 0; }
.time-item::before {
 content: "";
 width: 12px;
 height: 12px;
 border-radius: 50%;
 background: var(--primary);
 border: 2px solid #fff;
 box-shadow: 0 0 0 2px var(--primary);
 position: absolute;
 left: -7px;
 top: 8px;
}
.time-date { font-weight: 700; color: var(--primary-deep); margin-bottom: 2px; }
.time-item p { margin: 0; }
.time-item a { font-weight: 700; }
.faq-sec { padding: var(--pad-block) 0; background: var(--bg); }
.faq-list {
 background: #fff;
 border: 1px solid var(--line);
 border-radius: var(--radius-card);
 box-shadow: var(--shadow);
 overflow: hidden;
}
.faq-item { border-bottom: 1px solid var(--line); border-left: 3px solid transparent; background: #fff; }
.faq-item:last-child { border-bottom: 0; }
.faq-item[open] { border-left-color: var(--primary); background: #F8FBFE; }
.faq-item summary {
 list-style: none;
 cursor: pointer;
 font-weight: 700;
 font-size: 18px;
 padding: 18px 48px 18px 20px;
 position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
 content: "";
 width: 10px;
 height: 10px;
 border-right: 2px solid var(--primary);
 border-bottom: 2px solid var(--primary);
 position: absolute;
 right: 22px;
 top: 24px;
 transform: rotate(45deg);
 transition: transform .2s ease;
}
.faq-item[open] summary::after { transform: rotate(225deg); top: 28px; }
.faq-a { padding: 0 20px 18px; max-width: 760px; }
.more-sec { background: var(--band); padding: 72px 0; border-top: 1px solid var(--line); }
.more-row {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 24px;
}
.more-row p { margin: 8px 0 0; max-width: 640px; }
.site-footer {
 background: #fff;
 border-top: 1px solid var(--line);
 padding: 56px 0 28px;
}
.foot-brand .brand-lock { align-items: flex-start; }
.foot-brand p { color: var(--muted); margin-top: 12px; }
.foot-title { font-weight: 700; color: var(--primary-deep); margin-bottom: 12px; }
.foot-links { display: grid; gap: 8px; }
.foot-links a { color: var(--text); text-decoration: none; }
.foot-links a:hover { text-decoration: underline; text-underline-offset: 4px; }
.copyline { margin: 28px 0 0; color: var(--muted); font-size: 14px; }
.techline { margin: 0; color: var(--muted); font-size: 13px; }
@media (min-width: 992px) {
 #navMain.collapse {
 display: flex !important;
 position: absolute;
 left: 20px;
 right: 20px;
 top: 0;
 height: 78px !important;
 align-items: center;
 justify-content: space-between;
 pointer-events: none;
 z-index: 1;
 background: transparent;
 border: 0;
 visibility: visible;
 }
 #navMain .nav-side { pointer-events: auto; }
}
@media (min-width: 992px) and (max-width: 1199.98px) {
 .nav-side a { letter-spacing: -0.03em; font-size: 13px; padding: 6px 6px; }
 .brand-line { font-size: 18px; }
 .cat-head h1 { font-size: 38px; }
}
@media (min-width: 1200px) {
 .nav-side a { letter-spacing: 0; font-size: 15px; padding: 8px 12px; }
}
@media (max-width: 991.98px) {
 .nav-toggle { display: flex; }
 #navMain { background: var(--bg); border-top: 1px solid var(--line); position: static; height: auto; pointer-events: auto; }
 .nav-side { flex-direction: column; align-items: stretch; width: 100%; gap: 0; }
 .nav-side a { padding: 12px 4px; border-bottom: 1px solid var(--line); }
 .cat-head { padding: 28px 0 24px; }
 .cat-head-grid, .entry, .def-list div, .rank-item, .more-row { grid-template-columns: 1fr; }
 .cat-head h1 { font-size: 32px; }
 .list-sec, .field-sec, .hot-sec, .timeline-sec, .faq-sec { padding: 40px 0; }
 .more-sec { padding: 36px 0; }
 .more-row { flex-direction: column; align-items: flex-start; }
 .section-title { font-size: 26px; }
 .rank-item { grid-template-columns: 40px minmax(0, 1fr); }
 .rank-go { grid-column: 2; }
}
@media (max-width: 767.98px) {
 .filter-group, .field { width: 100%; min-width: 0; }
 .field-panel { padding: 4px 18px 8px; }
 .entry { padding: 14px; gap: 14px; }
}
@media (max-width: 575.98px) {
 .cat-head h1 { font-size: 30px; }
 .result-num { font-size: 34px; }
 .list-sec, .field-sec, .hot-sec, .timeline-sec, .faq-sec { padding: 32px 0; }
 .faq-item summary { font-size: 16px; padding-right: 40px; }
 .brand-line { font-size: 18px; }
}

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