/* roulang page: index */
:root {
  --bg: #f6f4f0;
  --surface: #ffffff;
  --surface-soft: #fbfaf7;
  --ink: #1d1e1a;
  --ink-soft: #5a5d56;
  --muted: #8c8f86;
  --line: #e8e4dd;
  --line-dark: #d8d2c8;
  --accent: #d95a42;
  --accent-strong: #b03f2a;
  --dark: #171a18;
  --dark-soft: #222724;
  --forest: #2e4b46;
  --radius-xl: 22px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-sm: 0 6px 18px rgba(29, 30, 26, 0.06);
  --shadow-md: 0 14px 38px rgba(29, 30, 26, 0.08);
  --shadow-lg: 0 30px 70px rgba(29, 30, 26, 0.12);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input {
  font: inherit;
}
::selection {
  background: rgba(217, 90, 66, 0.18);
  color: #47140a;
}
:focus-visible {
  outline: 3px solid rgba(217, 90, 66, 0.45);
  outline-offset: 3px;
  border-radius: 6px;
}
.container-x {
  width: min(1160px, 100% - 40px);
  margin-inline: auto;
}
.section {
  padding-top: 84px;
  padding-bottom: 84px;
}
.section-tight {
  padding-top: 56px;
  padding-bottom: 56px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  background: rgba(217, 90, 66, 0.08);
  border: 1px solid rgba(217, 90, 66, 0.16);
  border-radius: 999px;
  padding: 5px 14px;
}
.section-head {
  max-width: 760px;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
  margin: 16px 0 14px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.section-desc {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
  margin: 0;
}
.center-head {
  margin-inline: auto;
  text-align: center;
}
.center-head .eyebrow {
  margin-inline: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}
.btn i {
  font-size: 13px;
  opacity: 0.9;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 24px rgba(217, 90, 66, 0.24);
}
.btn-primary:hover {
  background: var(--accent-strong);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(217, 90, 66, 0.3);
}
.btn-light {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
}
.btn-light:hover {
  transform: translateY(-2px);
  border-color: var(--line-dark);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.08);
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-small {
  padding: 10px 18px;
  font-size: 14px;
}
.btn:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(217, 90, 66, 0.5);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-brand-row {
  background: var(--dark);
  color: #fff;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  gap: 24px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
}
.brand-logo .dot {
  width: 9px;
  height: 9px;
  border-radius: 99px;
  background: var(--accent);
  display: inline-block;
  box-shadow: 0 0 0 4px rgba(217, 90, 66, 0.18);
}
.brand-logo .logo-sub {
  font-size: 12px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}
.search-mini {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  padding: 0 14px;
  gap: 8px;
  color: rgba(255, 255, 255, 0.5);
}
.search-mini input {
  width: 168px;
  background: transparent;
  border: 0;
  outline: none;
  color: #fff;
  padding: 8px 0;
  font-size: 14px;
}
.search-mini input::placeholder {
  color: rgba(255, 255, 255, 0.45);
}
.header-channel-row {
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}
.channel-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}
.channel-inner::-webkit-scrollbar {
  display: none;
}
.primary-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 14px 18px 12px;
  font-size: 15px;
  font-weight: 650;
  color: var(--ink-soft);
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav-link i {
  opacity: 0.65;
  font-size: 13px;
}
.nav-link:hover {
  color: var(--accent);
}
.nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.channel-action {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-home {
  position: relative;
  isolation: isolate;
  min-height: 580px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: url('/assets/images/backpic/back-1.jpg');
  background-size: cover;
  background-position: center;
}
.hero-home::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(110deg, rgba(18, 20, 18, 0.92) 0%, rgba(18, 20, 18, 0.72) 45%, rgba(18, 20, 18, 0.38) 78%, rgba(18, 20, 18, 0.65) 100%);
}
.hero-content {
  width: min(860px, 100% - 40px);
  margin-inline: auto;
  padding-top: 60px;
  padding-bottom: 90px;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 24px;
}
.hero-content h1 {
  font-size: clamp(34px, 5.6vw, 58px);
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin: 0 0 24px;
  font-weight: 850;
  max-width: 820px;
}
.hero-content h1 span {
  color: #f3a08f;
}
.hero-lead {
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin: 0 0 30px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-note {
  margin-top: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

.stats-band {
  margin-top: -64px;
  position: relative;
  z-index: 5;
  padding-bottom: 32px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.stat-card {
  padding: 28px 26px;
  position: relative;
  background: #fff;
}
.stat-card + .stat-card {
  border-left: 1px solid var(--line);
}
.stat-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(217, 90, 66, 0.08);
  color: var(--accent);
  font-size: 16px;
  margin-bottom: 14px;
}
.stat-num {
  font-size: 30px;
  font-weight: 850;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.stat-label {
  color: var(--ink-soft);
  font-size: 14px;
  margin-top: 2px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature-card {
  display: flex;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-dark);
}
.f-icon {
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  background: var(--dark);
  color: #fff;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 17px;
}
.feature-card:nth-child(2) .f-icon {
  background: var(--forest);
  color: #dcefe9;
}
.feature-card:nth-child(3) .f-icon {
  background: #b89a4b;
  color: #fff8e3;
}
.feature-card:nth-child(4) .f-icon {
  background: #5e6ead;
  color: #e7ecff;
}
.feature-card:nth-child(5) .f-icon {
  background: #4d6f9b;
  color: #e4f0ff;
}
.feature-card:nth-child(6) .f-icon {
  background: var(--accent);
  color: #fff2ef;
}
.feature-body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 750;
}
.feature-body p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.matrix-section {
  background: var(--dark);
  color: #fff;
}
.matrix-section .section-head h2 {
  color: #fff;
}
.matrix-section .section-desc {
  color: rgba(255, 255, 255, 0.62);
}
.matrix-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.matrix-card {
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.04);
}
.matrix-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 750;
}
.matrix-card h3 i {
  color: #efb9ad;
  font-size: 18px;
}
.matrix-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.matrix-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
}
.matrix-list li:last-child {
  border-bottom: 0;
}
.matrix-list li i {
  color: rgba(255, 255, 255, 0.35);
  font-size: 12px;
}
.tag-free {
  font-size: 12px;
  font-weight: 600;
  color: #aed8cf;
  background: rgba(174, 216, 207, 0.12);
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}
.tag-extra {
  font-size: 12px;
  font-weight: 600;
  color: #f0c9a5;
  background: rgba(240, 201, 165, 0.12);
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.topic-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.topic-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.topic-media {
  position: relative;
  height: 150px;
  overflow: hidden;
}
.topic-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.topic-card:hover .topic-media img {
  transform: scale(1.05);
}
.topic-media .topic-num {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 12px;
  border-radius: 999px;
  padding: 3px 11px;
  backdrop-filter: blur(6px);
}
.topic-body {
  padding: 20px 18px 22px;
}
.topic-body h3 {
  font-size: 17px;
  font-weight: 750;
  margin: 0 0 7px;
}
.topic-body p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.journal-section {
  background: #fff;
  border-top: 1px solid var(--line);
}
.journal-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 40px;
}
.journal-list-title {
  font-size: 15px;
  font-weight: 750;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 0 0 18px;
  text-transform: uppercase;
}
.read-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.read-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.read-list li:first-child {
  padding-top: 0;
}
.read-list li:last-child {
  border-bottom: 0;
}
.read-index {
  font-size: 13px;
  font-weight: 800;
  color: rgba(217, 90, 66, 0.6);
  letter-spacing: 0.05em;
  min-width: 28px;
}
.read-list a {
  font-size: 16px;
  font-weight: 650;
  color: var(--ink);
  line-height: 1.6;
  transition: color 0.18s;
}
.read-list a:hover {
  color: var(--accent);
}
.read-more {
  display: inline-flex;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  gap: 6px;
}
.journal-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.side-card {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
}
.side-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}
.side-body {
  padding: 22px;
}
.side-body h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 750;
}
.side-note-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.side-note-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 8px 0;
  font-size: 14px;
  color: var(--ink-soft);
}
.side-note-list i {
  color: var(--accent);
  font-size: 13px;
  margin-top: 5px;
}

.steps-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.step-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px 24px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.step-item::before {
  content: "";
  position: absolute;
  right: -24px;
  top: -24px;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: rgba(217, 90, 66, 0.05);
}
.step-item:hover {
  border-color: var(--line-dark);
  box-shadow: var(--shadow-sm);
  transform: translateY(-3px);
}
.step-num {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--dark);
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  margin-bottom: 16px;
}
.step-item h3 {
  margin: 0 0 7px;
  font-size: 17px;
  font-weight: 750;
}
.step-item p {
  margin: 0;
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.faq-wrap {
  max-width: 820px;
  margin-inline: auto;
  display: grid;
  gap: 12px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.faq-item:hover {
  border-color: var(--line-dark);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-size: 16px;
  font-weight: 700;
  list-style: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-icon {
  flex: 0 0 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(217, 90, 66, 0.1);
  color: var(--accent);
  font-size: 14px;
  transition: transform 0.3s;
}
.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 24px 22px;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.9;
}

.cta-section {
  position: relative;
  background-image: url('/assets/images/backpic/back-2.jpg');
  background-position: center;
  background-size: cover;
  isolation: isolate;
  color: #fff;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(23, 26, 24, 0.86);
  z-index: -1;
}
.cta-inner {
  width: min(760px, 100% - 40px);
  margin-inline: auto;
  text-align: center;
}
.cta-inner h2 {
  font-size: clamp(28px, 4vw, 44px);
  margin: 0 0 18px;
  font-weight: 850;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 16px;
  line-height: 1.8;
  margin: 0 auto 28px;
  max-width: 620px;
}
.newsletter-form {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 520px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 6px 6px 6px 20px;
  backdrop-filter: blur(6px);
}
.newsletter-form input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  color: #fff;
  font-size: 15px;
}
.newsletter-form input::placeholder {
  color: rgba(255, 255, 255, 0.55);
}
.newsletter-form button {
  white-space: nowrap;
}
.form-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 14px;
}
.done-message {
  background: rgba(217, 90, 66, 0.14);
  border: 1px solid rgba(217, 90, 66, 0.4);
  border-radius: 999px;
  padding: 10px 20px;
  color: #fbe9e5;
  font-size: 15px;
  display: inline-flex;
  gap: 8px;
}

.site-footer {
  background: var(--dark);
  color: #fff;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.2fr 0.7fr 1.1fr;
  gap: 48px;
  padding: 64px 0 38px;
}
.footer-desc {
  color: rgba(255, 255, 255, 0.58);
  font-size: 14px;
  line-height: 1.9;
  max-width: 320px;
  margin: 16px 0 0;
}
.footer-title {
  font-size: 15px;
  font-weight: 750;
  margin: 0 0 18px;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.footer-links a {
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: #fcb4a7;
}
.footer-tip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 18px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
  line-height: 1.8;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0 30px;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
}
.footer-bottom-inner a {
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s;
}
.footer-bottom-inner a:hover {
  color: #fff;
}

.fade-up {
  animation: fadeUp 0.6s ease both;
}
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-card:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .stat-card:nth-child(4) {
    border-top: 1px solid var(--line);
  }
  .topic-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-wrap {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container-x {
    width: min(100% - 32px, 1160px);
  }
  .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }
  .search-mini {
    display: none;
  }
  .channel-action .btn {
    display: none;
  }
  .hero-home {
    min-height: 540px;
  }
  .hero-content h1 {
    font-size: clamp(30px, 6.5vw, 44px);
  }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .journal-grid {
    grid-template-columns: 1fr;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 48px;
  }
  .matrix-grid {
    grid-template-columns: 1fr;
  }
  .newsletter-form {
    flex-direction: column;
    align-items: stretch;
    border-radius: 24px;
    padding: 16px;
    gap: 12px;
  }
  .newsletter-form input {
    width: 100%;
    padding: 4px 6px;
  }
  .newsletter-form button {
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .topic-grid {
    grid-template-columns: 1fr;
  }
  .steps-wrap {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .stat-card + .stat-card {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .nav-link {
    font-size: 14px;
    padding: 13px 14px 11px;
  }
  .btn {
    width: 100%;
  }
}

/* roulang page: category1 */
:root {
    --bg: #f6f4f0;
    --surface: #ffffff;
    --surface-soft: #fbfaf7;
    --ink: #1d1e1a;
    --ink-soft: #5a5d56;
    --muted: #8c8f86;
    --line: #e8e4dd;
    --line-dark: #d8d2c8;
    --accent: #d95a42;
    --accent-strong: #b03f2a;
    --dark: #171a18;
    --dark-soft: #222724;
    --forest: #2e4b46;
    --radius-xl: 22px;
    --radius-lg: 16px;
    --radius-md: 12px;
    --shadow-sm: 0 6px 18px rgba(29, 30, 26, 0.06);
    --shadow-md: 0 14px 38px rgba(29, 30, 26, 0.08);
    --shadow-lg: 0 30px 70px rgba(29, 30, 26, 0.12);
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.container-x {
    width: min(1160px, 100% - 40px);
    margin-inline: auto;
}
.section {
    padding-top: 84px;
    padding-bottom: 84px;
}
.section-tight {
    padding-top: 56px;
    padding-bottom: 56px;
}
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--accent);
    text-transform: uppercase;
    background: rgba(217, 90, 66, 0.08);
    border: 1px solid rgba(217, 90, 66, 0.16);
    border-radius: 999px;
    padding: 5px 14px;
}
.section-head {
    max-width: 780px;
    margin-bottom: 48px;
}
.center-head {
    max-width: 760px;
    margin-inline: auto;
    text-align: center;
}
/* center-head 类必须覆盖 section-head 的 margin-bottom，但保留干净，不定义双倍 */
.section-head h2 {
    font-size: clamp(28px, 4vw, 40px);
    line-height: 1.25;
    margin: 16px 0 14px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--ink);
}
.section-desc {
    color: var(--ink-soft);
    font-size: 16px;
    line-height: 1.9;
    margin: 0;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 15px;
    line-height: 1;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}
.btn i {
    font-size: 13px;
    opacity: 0.9;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 10px 24px rgba(217, 90, 66, 0.24);
}
.btn-primary:hover {
    background: var(--accent-strong);
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(217, 90, 66, 0.3);
}
.btn-light {
    background: #fff;
    color: var(--ink);
    border-color: var(--line);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
}
.btn-light:hover {
    transform: translateY(-2px);
    border-color: var(--line-dark);
    box-shadow: 0 12px 26px rgba(0, 0, 0, 0.08);
}
.btn-ghost {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.55);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-2px);
}
.btn-small {
    padding: 10px 18px;
    font-size: 14px;
}
.btn:focus-visible,
a:focus-visible {
    outline: 3px solid rgba(217, 90, 66, 0.5);
    outline-offset: 3px;
}
/* ===== 导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
}
.header-brand-row {
    background: var(--dark);
    color: #fff;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 62px;
    gap: 24px;
}
.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.01em;
}
.brand-logo .dot {
    width: 9px;
    height: 9px;
    border-radius: 99px;
    background: var(--accent);
    display: inline-block;
    box-shadow: 0 0 0 4px rgba(217, 90, 66, 0.18);
}
.brand-logo .logo-sub {
    font-size: 12px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0;
}
.header-tools {
    display: flex;
    align-items: center;
    gap: 16px;
}
.search-mini {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    padding: 0 14px;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
}
.search-mini input {
    width: 168px;
    background: transparent;
    border: 0;
    outline: none;
    color: #fff;
    padding: 8px 0;
    font-size: 14px;
}
.search-mini input::placeholder {
    color: rgba(255, 255, 255, 0.45);
}
.header-channel-row {
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}
.channel-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.primary-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 14px 18px 12px;
    font-size: 15px;
    font-weight: 650;
    color: var(--ink-soft);
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}
.nav-link i {
    opacity: 0.65;
    font-size: 13px;
}
.nav-link:hover {
    color: var(--accent);
}
.nav-link.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}
.channel-action {
    display: flex;
    align-items: center;
}
/* ===== 页脚 ===== */
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.82);
    margin-top: 20px;
}
.footer-main {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 1fr;
    gap: 50px;
    padding: 64px 0 48px;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 22px 0;
}
.footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}
.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    line-height: 1.9;
    margin: 18px 0 0;
    max-width: 420px;
}
.footer-title {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin: 0 0 16px;
}
.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
}
.footer-links li a {
    color: rgba(255, 255, 255, 0.66);
    font-size: 14px;
    display: inline-flex;
    gap: 6px;
    align-items: center;
    transition: color 0.2s, padding-left 0.2s;
}
.footer-links li a:hover {
    color: #fff;
    padding-left: 5px;
}
.footer-links i {
    color: rgba(217, 90, 66, 0.7);
    font-size: 11px;
}
.footer-tip {
    border-left: 2px solid rgba(217, 90, 66, 0.6);
    padding-left: 16px;
    color: rgba(255, 255, 255, 0.58);
    font-size: 13.5px;
    line-height: 1.9;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 14px 18px;
}
/* ===== Hero 视频总览风格 ===== */
.category-hero {
    position: relative;
    isolation: isolate;
    min-height: 520px;
    padding: 110px 0 110px;
    color: #fff;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-image: url('/assets/images/backpic/back-3.jpg');
    background-position: center;
    background-size: cover;
}
.category-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(120% 100% at 70% 20%, rgba(23, 26, 24, 0.78) 0%, rgba(23, 26, 24, 0.9) 100%);
    z-index: -1;
}
.category-hero::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: linear-gradient(180deg, rgba(23, 26, 24, 0.28) 0%, transparent 60%, rgba(23, 26, 24, 0.55) 100%);
    z-index: -1;
}
.hero-inner {
    width: min(960px, 100% - 40px);
    margin-inline: auto;
    text-align: center;
}
.hero-player-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    border-radius: 999px;
    padding: 7px 18px 7px 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 28px;
}
.video-play-badge {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 12px;
    box-shadow: 0 0 0 5px rgba(217, 90, 66, 0.22);
}
.hero-inner h1 {
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.2;
    letter-spacing: -0.035em;
    margin: 0 auto 22px;
    font-weight: 850;
    max-width: 860px;
}
.hero-inner h1 span {
    color: #f3a08f;
}
.hero-lead {
    font-size: 16.5px;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.82);
    max-width: 720px;
    margin: 0 auto 34px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
}
.btn-video {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 28px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: background .25s, transform .25s, border-color .25s;
}
.btn-video:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #fff;
    transform: translateY(-2px);
}
.video-btn-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: #fff;
    box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.12);
}
.hero-scroll-hint {
    margin-top: 44px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    letter-spacing: .06em;
}
.hero-scroll-hint i {
    display: inline-block;
    animation: hint-down 1.8s infinite;
}
@keyframes hint-down {
    0%, 20%, 40%, 80%, 100% { transform: translateY(0); }
    60% { transform: translateY(6px); }
}
/* ===== 能力指标 ===== */
.metric-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: 42px 40px;
    margin-top: -46px;
    position: relative;
    z-index: 5;
}
.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    text-align: center;
}
.metric-item {
    border-left: 1px solid var(--line);
    padding: 10px 0;
}
.metric-item:first-child {
    border-left: 0;
}
.metric-icon {
    font-size: 20px;
    color: var(--accent);
    margin-bottom: 10px;
}
.metric-item strong {
    display: block;
    font-size: 25px;
    font-weight: 850;
    color: var(--ink);
    letter-spacing: -0.02em;
}
.metric-item strong i {
    font-size: 14px;
    font-style: normal;
}
.metric-item span {
    display: block;
    color: var(--ink-soft);
    font-size: 14px;
    margin-top: 5px;
}
/* ===== 功能矩阵 ===== */
.feature-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.feature-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 38px 30px 30px;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--line-dark);
}
.feature-card-top {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    background: var(--forest);
    box-shadow: 0 8px 18px rgba(46, 75, 70, 0.22);
    margin-bottom: 22px;
}
.feature-card h3 {
    font-size: 20px;
    font-weight: 800;
    color: var(--ink);
    margin: 0 0 12px;
}
.feature-card p {
    color: var(--ink-soft);
    font-size: 15px;
    line-height: 1.9;
    margin: 0;
}
.card-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}
.tag-mini {
    background: var(--surface-soft);
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 12.5px;
    color: var(--ink-soft);
    border: 1px solid var(--line);
    font-weight: 600;
}
.tag-mini.green {
    background: rgba(46, 75, 70, .08);
    border-color: rgba(46, 75, 70, .14);
    color: var(--forest);
}
/* ===== 图文深度解析 ===== */
.detail-split {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    align-items: center;
    gap: 64px;
}
.detail-split-media {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    min-height: 360px;
}
.detail-split-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 360px;
}
.detail-split-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(200deg, transparent 60%, rgba(23, 26, 24, 0.55) 100%);
}
.media-caption {
    position: absolute;
    left: 18px;
    bottom: 16px;
    color: #fff;
    font-size: 13.5px;
    font-weight: 600;
    background: rgba(0,0,0,.35);
    backdrop-filter: blur(6px);
    padding: 8px 14px;
    border-radius: 999px;
    z-index: 2;
}
.detail-list {
    display: grid;
    gap: 18px;
    margin: 24px 0 0;
}
.detail-item {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 14px;
}
.detail-item-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(217, 90, 66, .1);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}
.detail-item-text h4 {
    margin: 0 0 4px;
    font-size: 16px;
    font-weight: 750;
}
.detail-item-text p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 14px;
    line-height: 1.8;
}
/* ===== 深色对比区 ===== */
.compare-section {
    background: var(--dark);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.compare-section .section-desc {
    color: rgba(255, 255, 255, 0.65);
}
.compare-section .section-head h2 {
    color: #fff;
}
.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.compare-card {
    border-radius: var(--radius-xl);
    padding: 34px 36px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background .25s, transform .25s;
}
.compare-card:hover {
    background: rgba(255, 255, 255, .08);
    transform: translateY(-2px);
}
.compare-card-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 800;
    margin: 0 0 20px;
}
.plan-badge {
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 13px;
    background: var(--accent);
    color: #fff;
}
.compare-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
.compare-card ul li {
    position: relative;
    padding-left: 30px;
    margin-top: 12px;
    color: rgba(255, 255, 255, 0.77);
    font-size: 14.5px;
}
.compare-card ul li i {
    position: absolute;
    left: 0;
    top: 3px;
    color: var(--accent);
    font-size: 13px;
    width: 20px;
    text-align: center;
    opacity: .9;
}
/* ===== FAQ ===== */
.faq-wrap {
    max-width: 820px;
    margin: 0 auto;
    display: grid;
    gap: 14px;
}
.faq-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow .25s;
}
.faq-card:hover {
    box-shadow: var(--shadow-md);
}
.faq-card details {
    padding: 24px 28px;
}
.faq-card summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-weight: 700;
    color: var(--ink);
    font-size: 16px;
}
.faq-card summary::-webkit-details-marker {
    display: none;
}
.faq-icon {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(217, 90, 66, .1);
    color: var(--accent);
    font-size: 12px;
    transition: transform .25s;
}
.faq-card details[open] .faq-icon {
    transform: rotate(45deg);
}
.faq-answer {
    margin: 16px 0 0;
    padding: 18px 20px;
    background: var(--surface-soft);
    border-radius: var(--radius-md);
    color: var(--ink-soft);
    font-size: 14.5px;
    line-height: 1.9;
}
/* ===== CTA表单区 ===== */
.cta-news {
    background-image: url('/assets/images/backpic/back-2.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
    isolation: isolate;
}
.cta-news::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, rgba(23, 26, 24, .96) 0%, rgba(46, 75, 70, .95) 100%);
    z-index: -1;
}
.cta-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 50px;
    color: #fff;
}
.cta-inner h2 {
    font-size: clamp(26px, 3vw, 40px);
    margin: 14px 0 16px;
    line-height: 1.3;
    color: #fff;
}
.cta-inner p {
    color: rgba(255, 255, 255, 0.74);
    font-size: 15.5px;
    max-width: 480px;
}
.cta-form {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: 34px;
    box-shadow: var(--shadow-lg);
}
.cta-form h3 {
    font-size: 20px;
    margin: 0 0 6px;
    color: var(--ink);
}
.cta-form p {
    color: var(--muted);
    font-size: 13.5px;
    margin: 0 0 20px;
}
.cta-form form {
    display: grid;
    gap: 13px;
}
.cta-form input {
    padding: 13px 16px;
    border-radius: 12px;
    border: 1px solid var(--line-dark);
    background: var(--surface-soft);
    color: var(--ink);
    outline: none;
    transition: border-color .2s, box-shadow .2s;
}
.cta-form input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(217, 90, 66, .14);
    background: #fff;
}
.cta-form button {
    width: 100%;
}
.form-note {
    font-size: 12px;
    color: var(--muted);
    margin-top: 6px;
}
/* ===== 中间虚线分隔 ===== */
.section-divider {
    width: 100%;
    height: 1px;
    border-bottom: 1px solid var(--line);
    margin: 0;
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
    .metric-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .metric-item {
        border-left: 0;
    }
    .feature-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .detail-split {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}
@media (max-width: 768px) {
    .header-tools {
        gap: 10px;
    }
    .search-mini {
        display: none;
    }
    .header-brand-row .btn-small {
        display: none;
    }
    .header-channel-row {
        overflow-x: auto;
    }
    .channel-inner {
        min-width: max-content;
        padding-inline: 12px;
    }
    .brand-logo .logo-sub {
        display: none;
    }
    .category-hero {
        min-height: 480px;
        padding: 70px 0;
    }
    .metric-panel {
        padding: 28px 22px;
    }
    .compare-grid {
        grid-template-columns: 1fr;
    }
    .cta-inner {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 560px) {
    .container-x {
        width: calc(100% - 28px);
    }
    .section {
        padding-top: 58px;
        padding-bottom: 58px;
    }
    .section-head h2 {
        font-size: 27px;
    }
    .feature-card-grid {
        grid-template-columns: 1fr;
    }
    .metric-grid {
        grid-template-columns: 1fr;
    }
    .metric-item {
        border: 0;
        text-align: left;
        display: grid;
        grid-template-columns: 28px 1fr;
        gap: 10px;
        align-items: center;
        padding: 7px 0;
    }
    .metric-icon {
        margin-bottom: 0;
    }
    .metric-item strong {
        font-size: 20px;
    }
    .metric-item span {
        grid-column: 2;
        margin-top: 0;
        grid-row: auto;
    }
    .footer-main {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 48px 0 30px;
    }
    .footer-bottom-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .faq-card details {
        padding: 18px 18px;
    }
    .compare-card {
        padding: 24px 20px;
    }
    .hero-actions .btn,
    .hero-actions .btn-video {
        width: 100%;
    }
    .detail-split-media,
    .detail-split-media img {
        min-height: 260px;
    }
}
/* 分类页 badge 增强 */
.path-note {
    font-size: 12px;
    color: var(--muted);
    border-bottom: 1px solid var(--line);
    padding-bottom: 12px;
    margin-bottom: 0;
}