/* roulang page: index */
:root {
  --bg-0: #080B0A;
  --bg-1: #0D1210;
  --bg-2: #131A17;
  --bg-3: #1A231F;
  --line-1: rgba(255, 255, 255, .08);
  --line-2: rgba(255, 255, 255, .14);
  --text-1: #EDF3F0;
  --text-2: #A3B5AC;
  --text-3: #6C7F77;
  --accent: #2DE1A6;
  --accent-2: #1EA87F;
  --gold: #D9A45B;
  --danger: #E4573D;
  --success: #2DE1A6;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-card: 0 10px 30px rgba(0, 0, 0, .25);
  --shadow-hover: 0 18px 44px rgba(0, 0, 0, .4), 0 0 0 1px rgba(45, 225, 166, .06);
  --shadow-glow: 0 0 34px rgba(45, 225, 166, .08);
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-num: "JetBrains Mono", "DIN Alternate", "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  --container: 1280px;
  --patch: 40px;
  --section-space: 96px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--text-1);
  font-family: var(--font-cn);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, .018) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .018) 1px, transparent 1px);
  background-size: 56px 56px;
}

body > * {
  position: relative;
  z-index: 1;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

button {
  font-family: inherit;
}

input,
select,
textarea {
  font-family: inherit;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--patch);
}

.section-space {
  padding: var(--section-space) 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--accent);
  color: #081009;
  font-weight: 600;
  border-radius: 8px;
  transition: top .2s ease;
}

.skip-link:focus {
  top: 12px;
  color: #081009;
  outline: 2px solid #fff;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
  opacity: .8;
}

.text-accent {
  color: var(--accent);
}

.gold-text {
  color: var(--gold);
}

::selection {
  background: rgba(45, 225, 166, .22);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

section[id],
footer[id] {
  scroll-margin-top: 128px;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  transition: transform .15s ease, border-color .2s ease, background-color .2s ease, color .2s ease, box-shadow .2s ease;
}

.btn i {
  font-size: 14px;
}

.btn-primary {
  background: var(--accent);
  color: #081009;
  box-shadow: 0 8px 24px rgba(45, 225, 166, .14);
}

.btn-primary:hover {
  background: #51EDBA;
  color: #081009;
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(45, 225, 166, .2);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-2);
  color: var(--text-1);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-ghost:active {
  transform: translateY(0);
}

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

/* header / topbar */
.site-header {
  background: transparent;
}

.topbar {
  height: 36px;
  background: rgba(13, 18, 16, .94);
  border-bottom: 1px solid var(--line-1);
  color: var(--text-3);
  font-size: 12px;
}

.topbar-inner {
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar-domain {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  letter-spacing: .03em;
  color: var(--text-2);
}

.topbar-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.online-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 225, 166, .12);
  flex: none;
}

.topbar-links a {
  color: var(--text-3);
}

.topbar-links a:hover {
  color: var(--accent);
}

.mainnav-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 11, 10, .86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-1);
}

.mainnav {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--accent), var(--accent-2));
  color: #081009;
  font-weight: 700;
  font-size: 19px;
  border-radius: 9px;
  box-shadow: 0 4px 14px rgba(45, 225, 166, .22);
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text-1);
  white-space: nowrap;
}

.brand-name:hover {
  color: var(--accent);
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  padding: 10px 16px;
  font-size: 15px;
  color: var(--text-2);
  white-space: nowrap;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity .2s ease, transform .2s ease;
}

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

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

.nav-link.active::after {
  opacity: 1;
  transform: translateX(-50%) scaleX(1);
}

.nav-tools {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  margin-left: 6px;
  border: 1px solid var(--line-1);
  background: rgba(255, 255, 255, .03);
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-1);
  transition: transform .25s ease, opacity .25s ease, background-color .2s ease;
}

.nav-toggle:hover span {
  background: var(--accent);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(3px, 3px);
}

.nav-toggle.active span:nth-child(2) {
  transform: rotate(-45deg) translate(1px, -3px);
}

/* hero */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 78vh;
  display: flex;
  align-items: center;
  padding: 120px 0 130px;
  background-image: linear-gradient(180deg, rgba(8, 11, 10, .66) 0%, rgba(8, 11, 10, .92) 70%), radial-gradient(circle at 78% 28%, rgba(45, 225, 166, .1), transparent 28%), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 100px;
  background: linear-gradient(180deg, transparent, var(--bg-0));
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 54% 46%;
  align-items: center;
  gap: 48px;
}

.hero-copy {
  animation: heroRise .7s ease both;
}

@keyframes heroRise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid rgba(45, 225, 166, .24);
  background: rgba(45, 225, 166, .06);
  border-radius: 50px;
  color: var(--accent);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(45, 225, 166, .16);
  animation: dotPulse 2s infinite ease-in-out;
}

@keyframes dotPulse {
  0%, 100% {
    box-shadow: 0 0 0 3px rgba(45, 225, 166, .12);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(45, 225, 166, .04);
  }
}

.hero h1 {
  margin: 24px 0 18px;
  font-size: 54px;
  line-height: 1.22;
  letter-spacing: -.02em;
  font-weight: 700;
  color: var(--text-1);
}

.hero h1 span {
  color: var(--accent);
}

.hero-sub {
  max-width: 540px;
  margin: 0 0 32px;
  font-size: 16px;
  color: var(--text-2);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text-2);
  font-size: 14px;
}

.hero-points li i {
  color: var(--accent);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  animation: visualIn .8s ease .15s both;
}

@keyframes visualIn {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 12%;
  background: var(--accent);
  filter: blur(72px);
  opacity: .14;
  border-radius: 50%;
  pointer-events: none;
}

.window-card {
  position: relative;
  background: rgba(19, 26, 23, .92);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-xl);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .46), var(--shadow-glow);
  overflow: hidden;
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line-1);
  background: rgba(255, 255, 255, .02);
}

.window-dots {
  display: flex;
  gap: 6px;
  flex: none;
}

.window-dots i {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-3);
}

.window-dots i:first-child {
  background: #E4573D;
}

.window-dots i:nth-child(2) {
  background: #D9A45B;
}

.window-dots i:last-child {
  background: #2DE1A6;
}

.window-address {
  flex: 1;
  margin: 0 8px;
  padding: 7px 14px;
  background: rgba(0, 0, 0, .28);
  border: 1px solid rgba(255, 255, 255, .05);
  border-radius: 8px;
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--text-3);
  text-align: center;
  letter-spacing: .02em;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.window-body {
  position: relative;
  padding: 20px 20px 24px;
}

.terminal-label {
  margin-bottom: 16px;
  font-family: var(--font-num);
  font-size: 11px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .1em;
}

.terminal-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-1);
  color: var(--text-2);
  font-size: 13px;
}

.terminal-status strong {
  color: var(--text-1);
  font-weight: 500;
}

.terminal-status i {
  color: var(--accent);
}

.window-visual {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.meter-box {
  padding: 12px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid var(--line-1);
  border-radius: 12px;
  text-align: center;
}

.meter-box em {
  display: block;
  font-family: var(--font-num);
  font-style: normal;
  color: var(--text-2);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.2;
}

.meter-box span {
  display: block;
  margin-top: 7px;
  color: var(--text-3);
  font-size: 11px;
}

.meter-box.hot em {
  color: var(--accent);
}

.window-bars {
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 80px;
  opacity: .5;
}

/* metrics */
.metrics {
  position: relative;
  z-index: 3;
  margin-top: -72px;
  padding-bottom: 16px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.metric-card {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  padding: 26px 26px 24px;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  overflow: hidden;
}

.metric-card::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0;
  transform: scaleX(.4);
  transition: opacity .25s ease, transform .25s ease;
}

.metric-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-2);
  box-shadow: var(--shadow-hover);
}

.metric-card:hover::after {
  opacity: .8;
  transform: scaleX(1);
}

.metric-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  color: var(--text-3);
}

.metric-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(45, 225, 166, .08);
  color: var(--accent);
  font-size: 15px;
}

.metric-trend {
  font-family: var(--font-num);
  font-size: 11px;
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 4px;
}

.metric-num {
  display: block;
  font-family: var(--font-num);
  font-size: 40px;
  line-height: 1.15;
  font-weight: 500;
  color: var(--text-1);
  letter-spacing: -.02em;
  transition: color .25s ease;
}

.metric-card:hover .metric-num {
  color: var(--accent);
}

.metric-num small {
  font-size: 20px;
  color: inherit;
}

.metric-name {
  display: block;
  margin-top: 9px;
  color: var(--text-3);
  font-size: 13px;
}

/* section */
.section-head {
  margin-bottom: 42px;
}

.section-head h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.3;
  letter-spacing: -.01em;
  font-weight: 650;
}

.section-head p {
  max-width: 640px;
  margin: 14px 0 0;
  color: var(--text-2);
}

/* service */
.service-section {
  background: linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
}

.service-matrix {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.service-card {
  position: relative;
  overflow: hidden;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  min-height: 280px;
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-2);
  box-shadow: var(--shadow-hover);
}

.service-num {
  position: absolute;
  right: 24px;
  top: 20px;
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--text-3);
}

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(45, 225, 166, .08);
  color: var(--accent);
  font-size: 20px;
  margin-bottom: 20px;
}

.service-card h3 {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: 650;
  line-height: 1.4;
}

.service-card p {
  margin: 0 0 16px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
}

.service-card .link-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  color: var(--text-3);
  font-size: 13px;
  font-weight: 600;
}

.service-card .link-more i {
  transition: transform .2s ease;
}

.service-card:hover .link-more {
  color: var(--accent);
}

.service-card:hover .link-more i {
  transform: translateX(4px);
}

.service-card.feature-card {
  background: linear-gradient(145deg, var(--bg-2) 0%, var(--bg-3) 100%);
  border-color: rgba(45, 225, 166, .18);
}

.service-card.feature-card .service-kv {
  display: flex;
  gap: 28px;
  align-items: center;
}

.service-card.feature-card .service-content {
  flex: 1;
}

.service-card .cover-dummy {
  width: 34%;
  flex: none;
}

.service-card .cover-dummy img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line-1);
}

.service-check-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.service-check-list li {
  display: flex;
  gap: 10px;
  color: var(--text-2);
  font-size: 13px;
}

.service-check-list li i {
  color: var(--accent);
  margin-top: 4px;
}

.service-card.hot-card {
  background: linear-gradient(160deg, rgba(45, 225, 166, .1), rgba(19, 26, 23, .9) 56%), url('/assets/images/coverpic/cover-6.webp');
  background-size: cover;
  background-position: center;
  border-color: rgba(45, 225, 166, .3);
}

.hot-badge {
  position: absolute;
  right: 22px;
  top: 20px;
  padding: 4px 10px;
  border-radius: 50px;
  background: rgba(217, 164, 91, .13);
  color: var(--gold);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .05em;
  border: 1px solid rgba(217, 164, 91, .3);
}

.service-row-2 {
  display: grid;
  grid-template-columns: 1.55fr .9fr;
  gap: 24px;
  margin-top: 24px;
}

.service-row-2 .service-card {
  min-height: 320px;
}

.row2-offset {
  margin-top: -22px;
}

.service-row-2 + .service-row-2 {
  margin-top: 0;
}

/* compare */
.cmp-section {
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
  border-bottom: 1px solid var(--line-1);
}

.cmp-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: center;
}

.scene-list {
  display: flex;
  flex-direction: column;
}

.scene-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-1);
}

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

.scene-index {
  font-family: var(--font-num);
  color: var(--accent);
  font-size: 13px;
  line-height: 1.4;
  padding-top: 4px;
}

.scene-item h3 {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 620;
}

.scene-item p {
  margin: 0;
  color: var(--text-2);
  font-size: 14px;
}

.cmp-panel {
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  box-shadow: var(--shadow-card);
}

.cmp-group {
  margin-bottom: 22px;
}

.cmp-group:last-child {
  margin-bottom: 0;
}

.cmp-row {
  margin-bottom: 15px;
}

.cmp-row:last-child {
  margin-bottom: 0;
}

.cmp-row-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
  font-size: 13px;
}

.cmp-row-title span:first-child {
  color: var(--text-2);
}

.cmp-row-title span:last-child {
  font-family: var(--font-num);
  color: var(--text-1);
}

.cmp-bar {
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, .06);
  overflow: hidden;
}

.cmp-bar i {
  display: block;
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, #4A4A4A, #6A6A6A);
  width: 70%;
}

.cmp-bar.accent i {
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 12px rgba(45, 225, 166, .32);
  width: 28%;
}

.cmp-caption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-1);
  color: var(--text-3);
  font-size: 12px;
}

.legend {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legend i {
  display: block;
  width: 20px;
  height: 4px;
  border-radius: 4px;
  background: #6A6A6A;
}

.legend i.accent {
  background: var(--accent);
}

/* news */
.news-section {
  background: var(--bg-0);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  padding: 26px;
  min-height: 260px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.news-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-2);
  box-shadow: var(--shadow-hover);
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--accent);
  background: rgba(45, 225, 166, .08);
  border: 1px solid rgba(45, 225, 166, .16);
  white-space: nowrap;
}

.time {
  color: var(--text-3);
  font-family: var(--font-num);
  font-size: 12px;
  white-space: nowrap;
}

.news-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.5;
  font-weight: 630;
}

.news-card h3 a:hover {
  color: var(--accent);
}

.news-card p {
  margin: 0;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.empty-state {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--line-2);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .02);
  color: var(--text-3);
  font-size: 14px;
  gap: 14px;
}

.empty-state i {
  font-size: 28px;
  color: var(--text-3);
  opacity: .6;
}

/* faq */
.faq-section {
  background: linear-gradient(180deg, var(--bg-0), var(--bg-1));
}

.faq-wrap {
  max-width: 900px;
}

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

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

.faq-q {
  width: 100%;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: transparent;
  border: 0;
  padding: 12px 4px;
  cursor: pointer;
  text-align: left;
  color: var(--text-1);
  font-size: 17px;
  font-weight: 550;
}

.faq-q:hover {
  color: var(--accent);
}

.faq-icon {
  position: relative;
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  transition: transform .3s ease, border-color .3s ease, background-color .3s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1px;
  background: var(--text-2);
  transform: translate(-50%, -50%);
  transition: background-color .3s ease;
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  border-color: var(--accent);
}

.faq-item.active .faq-icon::before,
.faq-item.active .faq-icon::after {
  background: var(--accent);
}

.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s ease;
}

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

.faq-a-inner p {
  margin: 0 44px 20px 4px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
  max-width: 780px;
}

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

/* contact */
.contact-section {
  position: relative;
  overflow: hidden;
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
}

.contact-section::before {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  right: -100px;
  top: -120px;
  background: rgba(45, 225, 166, .08);
  filter: blur(90px);
  border-radius: 50%;
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-left h2 {
  margin: 0 0 16px;
  font-size: 34px;
  line-height: 1.3;
  font-weight: 650;
}

.contact-left p {
  margin-bottom: 26px;
  color: var(--text-2);
  font-size: 15px;
}

.contact-benefits {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.contact-benefits li {
  position: relative;
  padding-left: 26px;
  color: var(--text-2);
  font-size: 14px;
}

.contact-benefits li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6em;
  width: 12px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.contact-benefits small {
  display: block;
  color: var(--text-3);
  font-size: 12px;
  margin-top: 2px;
}

.contact-form {
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  color: var(--text-2);
}

.required-mark {
  color: var(--gold);
  margin-right: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--line-1);
  background: #0C0F0D;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text-1);
  font-size: 14px;
  transition: border-color .2s ease, box-shadow .2s ease;
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%236C7F77' stroke-width='1.4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 38px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 225, 166, .12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-3);
}

.form-group textarea {
  min-height: 110px;
  resize: vertical;
}

.form-tip {
  font-size: 12px;
  color: var(--text-3);
  margin: 4px 0 0;
}

.form-submit {
  width: 100%;
}

.contact-form .btn-primary i {
  margin-right: 4px;
}

.form-toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%) translateY(20px);
  z-index: 300;
  max-width: 560px;
  width: calc(100% - 40px);
  padding: 14px 18px;
  background: rgba(19, 26, 23, .96);
  border: 1px solid var(--accent);
  border-radius: 12px;
  color: var(--text-1);
  font-size: 14px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .45);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
}

.form-toast i {
  color: var(--accent);
}

.form-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* footer */
.site-footer {
  background: #060908;
  border-top: 1px solid var(--line-1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr .9fr .9fr;
  gap: 48px;
  padding: 60px 0 42px;
}

.footer-brand .brand {
  margin-bottom: 14px;
}

.brand-light .brand-mark {
  color: #081009;
}

.footer-desc {
  max-width: 360px;
  margin-top: 14px;
  color: var(--text-3);
  font-size: 13px;
  line-height: 1.8;
}

.footer-col h4 {
  margin: 0 0 16px;
  font-size: 15px;
  color: var(--text-1);
  font-weight: 600;
}

.footer-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-col a {
  color: var(--text-3);
  font-size: 14px;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-col li {
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.8;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 26px;
  border-top: 1px solid var(--line-1);
  color: var(--text-3);
  font-size: 12px;
  flex-wrap: wrap;
}

.footer-bottom .tech-domain {
  font-family: var(--font-num);
  color: var(--text-3);
}

@media (max-width: 1199px) {
  :root {
    --patch: 32px;
  }
  .hero h1 {
    font-size: 46px;
  }
  .service-row-2 {
    grid-template-columns: 1.3fr 1fr;
  }
}

@media (max-width: 1023px) {
  :root {
    --patch: 24px;
    --section-space: 76px;
  }
  .hero {
    min-height: auto;
    padding: 90px 0 120px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }
  .hero-copy {
    max-width: 760px;
  }
  .hero-visual {
    max-width: 620px;
  }
  .metrics {
    margin-top: -44px;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-row-2 {
    grid-template-columns: 1fr;
    margin-top: 24px;
  }
  .row2-offset {
    margin-top: 0;
  }
  .cmp-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  :root {
    --patch: 20px;
    --section-space: 60px;
  }
  .topbar-inner {
    justify-content: space-between;
  }
  .topbar-links span.online-text {
    display: none;
  }
  .mainnav {
    height: 64px;
    gap: 12px;
  }
  .brand-mark {
    width: 32px;
    height: 32px;
    font-size: 16px;
    border-radius: 8px;
  }
  .brand-name {
    font-size: 16px;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(8, 11, 10, .98);
    border-bottom: 1px solid var(--line-1);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    gap: 2px;
    box-shadow: 0 18px 36px rgba(0, 0, 0, .36);
  }
  .site-nav.open {
    display: flex;
  }
  .site-nav .nav-link {
    display: block;
    text-align: left;
    padding: 14px 4px;
    font-size: 18px;
    border-bottom: 1px solid var(--line-1);
  }
  .site-nav .nav-link.active::after {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-cta {
    display: none;
  }
  .hero {
    padding: 72px 0 100px;
  }
  .hero h1 {
    font-size: 34px;
    line-height: 1.28;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-points {
    gap: 12px 18px;
  }
  .hero-btns {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }
  .hero-btns .btn {
    width: 100%;
  }
  .window-body {
    padding: 16px 16px 20px;
  }
  .window-visual {
    gap: 8px;
  }
  .meter-box {
    padding: 8px 4px;
  }
  .metrics-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .metric-card {
    padding: 18px 18px 16px;
  }
  .metric-num {
    font-size: 30px;
  }
  .section-head h2,
  .contact-left h2 {
    font-size: 26px;
  }
  .service-matrix {
    grid-template-columns: 1fr;
  }
  .service-card {
    min-height: 0;
    padding: 24px;
  }
  .service-card.feature-card .service-kv {
    flex-direction: column;
    align-items: flex-start;
  }
  .service-card .cover-dummy {
    width: 100%;
  }
  .service-row-2 {
    gap: 20px;
  }
  .service-row-2 .service-card {
    min-height: 0;
  }
  .cmp-panel {
    padding: 20px 16px;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .news-card {
    min-height: 0;
  }
  .faq-q {
    font-size: 15px;
  }
  .faq-a-inner p {
    margin-right: 0;
    font-size: 14px;
  }
  .contact-form {
    padding: 22px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .topbar-links a:last-child {
    margin-left: 0;
  }
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  .metrics {
    margin-top: -30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .metric-card,
  .service-card,
  .news-card {
    transform: none !important;
  }
}

/* roulang page: article */
:root{
  --bg-0:#080B0A;
  --bg-1:#0D1210;
  --bg-2:#131A17;
  --bg-3:#1A231F;
  --line-1:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --text-1:#EDF3F0;
  --text-2:#A3B5AC;
  --text-3:#6C7F77;
  --accent:#2DE1A6;
  --accent-2:#1EA87F;
  --gold:#D9A45B;
  --danger:#E4573D;
  --shadow-sm:0 6px 18px rgba(0,0,0,.28);
  --shadow-md:0 12px 30px rgba(0,0,0,.32);
  --shadow-lg:0 18px 44px rgba(0,0,0,.4), 0 0 0 1px rgba(45,225,166,.06);
  --radius-sm:6px;
  --radius-md:10px;
  --radius-lg:16px;
  --radius-xl:24px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-num:"JetBrains Mono","DIN Alternate","Roboto Mono","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg-0);color:var(--text-2);font-family:var(--font-cn);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease, background .2s ease, border-color .2s ease}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:transparent;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
::selection{background:rgba(45,225,166,.22);color:#fff}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
@media(min-width:768px){
  .container{padding:0 40px}
}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0E0C}
::-webkit-scrollbar-thumb{background:#26322C;border-radius:12px;border:2px solid #0A0E0C}
::-webkit-scrollbar-thumb:hover{background:#33463C}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:600;font-size:15px;line-height:1;padding:15px 28px;border-radius:var(--radius-md);transition:transform .18s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, color .2s ease;white-space:nowrap}
.btn i{font-size:14px}
.btn-primary{background:var(--accent);color:#07100B;box-shadow:0 10px 26px rgba(45,225,166,.18)}
.btn-primary:hover{background:#51EDBA;transform:translateY(-2px);box-shadow:0 16px 34px rgba(45,225,166,.24);color:#050B07}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid var(--line-2);color:var(--text-1);background:transparent}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:12px 20px;font-size:14px;border-radius:8px}
.btn-lg{padding:17px 34px;font-size:16px;border-radius:12px}

/* 状态 */
.online-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(45,225,166,.5);animation:pulse 2.2s infinite;margin-right:6px;flex:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(45,225,166,.5)}70%{box-shadow:0 0 0 7px rgba(45,225,166,0)}100%{box-shadow:0 0 0 0 rgba(45,225,166,0)}}
.online-text{color:var(--text-3);font-size:12px;letter-spacing:.03em}

/* ======= Header ======= */
.site-header{position:sticky;top:0;z-index:200}
.topbar{height:36px;background:rgba(8,11,10,.94);border-bottom:1px solid var(--line-1)}
.topbar-inner{height:36px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.topbar-domain{font-size:12px;color:var(--text-3);display:inline-flex;align-items:center;gap:8px;font-family:var(--font-num)}
.topbar-domain i{margin-right:2px;color:var(--accent)}
.topbar-links{display:flex;align-items:center;gap:18px;font-size:13px;color:var(--text-2)}
.topbar-links a{color:var(--text-3);position:relative;transition:color .2s}
.topbar-links a:hover{color:var(--accent)}
.mainnav-wrap{background:rgba(8,11,10,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line-1)}
.mainnav{height:72px;display:flex;align-items:center;gap:24px}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:34px;height:34px;flex:none;display:flex;align-items:center;justify-content:center;border-radius:10px;background:linear-gradient(135deg,#2DE1A6,#169E74);color:#06100B;font-size:19px;font-weight:800;box-shadow:0 0 20px rgba(45,225,166,.2)}
.brand-name{color:var(--text-1);font-size:19px;font-weight:700;letter-spacing:.02em}
.site-nav{display:flex;align-items:center;gap:6px;margin:0 auto;flex:1;justify-content:center;flex-wrap:wrap}
.nav-link{display:inline-flex;align-items:center;position:relative;height:72px;padding:0 16px;color:var(--text-2);font-size:15px;font-weight:500;white-space:nowrap}
.nav-link i{color:var(--accent);font-size:11px;margin-right:6px}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after,.nav-link.active::after{content:"";position:absolute;left:50%;bottom:17px;transform:translateX(-50%);width:20px;height:2px;border-radius:99px;background:var(--accent)}
.nav-link.active{color:var(--accent)}
.nav-tools{display:flex;align-items:center;gap:14px}
.nav-cta{height:40px;padding:0 18px}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:6px;border-radius:8px;border:1px solid var(--line-2)}
.nav-toggle span{width:20px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .3s ease,width .3s ease,opacity .3s ease;transform-origin:center}
.nav-toggle:hover span{background:var(--accent)}

/* ======= Breadcrumb ======= */
.article-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:14px;color:var(--text-3);margin-top:48px}
.article-breadcrumb i{font-size:11px;color:var(--text-3);opacity:.6}
.article-breadcrumb a{transition:color .2s}
.article-breadcrumb a:hover{color:var(--accent)}
.article-breadcrumb .current{color:var(--text-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ======= Article hero banner ======= */
.article-hero{background-color:#0B100D;position:relative;padding:72px 0 56px;border-bottom:1px solid var(--line-1);background-image:url('/assets/images/backpic/back-2.webp');background-position:center;background-size:cover}
.article-hero .bg-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,9,7,.94) 0%,rgba(8,11,9,.84) 45%,rgba(13,18,15,.66) 100%);z-index:1}
.article-hero .container{position:relative;z-index:2}
.article-breadcrumb{margin-top:0}
.article-hero-inner{display:flex;flex-direction:column;gap:18px;margin-top:18px}
.article-cat-chip{display:inline-flex;align-self:flex-start;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;border:1px solid rgba(45,225,166,.28);background:rgba(45,225,166,.08);color:var(--accent);font-size:13px;font-weight:600}
.article-hero h1{color:var(--text-1);font-size:36px;font-weight:700;line-height:1.35;letter-spacing:-.6px;max-width:860px;text-wrap:pretty}
.article-hero-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 26px;color:var(--text-3);font-size:14px;margin-top:6px}
.meta-item{display:inline-flex;align-items:center;gap:8px}
.meta-item i{color:var(--accent);font-size:14px;width:16px;text-align:center}
.meta-item span{color:var(--text-2)}
.stat-num{font-family:var(--font-num)}

/* ======= Article layout ======= */
.article-section{background:var(--bg-0);padding:64px 0 96px;position:relative;overflow:hidden}
.article-section::before{content:"";position:absolute;top:-140px;left:20%;width:440px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(45,225,166,.045) 0%,transparent 70%);pointer-events:none}
.article-layout{display:flex;gap:56px;position:relative}
.article-body{width:100%;min-width:0;flex:1}
.aside-toc{width:200px;flex-shrink:0;display:block}
.toc-sticky{position:sticky;top:130px;text-align:left}
.toc-head{display:flex;align-items:center;gap:9px;color:var(--text-1);font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.04em}
.toc-head i{color:var(--accent)}
.toc-list{display:flex;flex-direction:column;gap:4px;border-left:1px solid var(--line-1);padding-left:0;margin:0}
.toc-list a{display:block;font-size:13px;line-height:1.6;color:var(--text-3);padding:6px 10px 6px 16px;border-left:2px solid transparent;margin-left:-1px;transition:all .18s ease}
.toc-list a:hover{color:var(--accent);border-left-color:var(--accent);padding-left:20px}
.toc-list a.toc-active{color:var(--accent);border-left-color:var(--accent)}
.toc-empty{color:var(--text-3);font-size:13px;line-height:1.7;padding:8px 0 0 16px;border-left:1px solid var(--line-1)}

/* Article cover */
.article-cover{position:relative;overflow:hidden;border-radius:var(--radius-xl);margin:34px 0 8px;background:var(--bg-2);border:1px solid var(--line-1)}
.article-cover img{width:100%;aspect-ratio:16/8;object-fit:cover}
.article-cover figcaption{margin:13px 0 9px;font-size:13px;color:var(--text-3);text-align:center;padding:0 18px}

/* ======= Article content styles ======= */
.cms-content{color:var(--text-2);font-size:16px;line-height:2;margin-top:28px;word-wrap:break-word}
.cms-content>*{max-width:780px}
.cms-content h2,.cms-content h2[id]{font-size:24px;line-height:1.5;color:var(--text-1);font-weight:700;margin:46px 0 14px;padding-left:16px;border-left:3px solid var(--accent);scroll-margin-top:140px}
.cms-content h3,.cms-content h3[id]{font-size:18px;line-height:1.6;color:var(--text-1);font-weight:650;margin:34px 0 12px;scroll-margin-top:140px}
.cms-content p{margin:0 0 22px}
.cms-content a{color:var(--accent);text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(45,225,166,.4);transition:opacity .2s}
.cms-content a:hover{opacity:.8}
.cms-content blockquote{margin:28px 0;border-left:3px solid var(--gold);background:var(--bg-2);border-radius:0 var(--radius-md) var(--radius-md) 0;padding:18px 22px;color:var(--text-2)}
.cms-content blockquote p:last-child{margin-bottom:0}
.cms-content ul,.cms-content ol{margin:0 0 24px;padding-left:4px}
.cms-content ul li{position:relative;padding-left:24px;margin-bottom:9px}
.cms-content ul li::before{content:"";position:absolute;left:2px;top:.78em;width:7px;height:7px;border-radius:2px;background:var(--accent);opacity:.85}
.cms-content ol{counter-reset:art-ol}
.cms-content ol li{position:relative;padding-left:28px;margin-bottom:9px;counter-increment:art-ol}
.cms-content ol li::before{content:counter(art-ol,decimal-leading-zero);position:absolute;left:0;top:2px;font-family:var(--font-num);font-size:13px;color:var(--accent);letter-spacing:.02em}
.cms-content pre{margin:26px 0;border-radius:var(--radius-md);background:#090D0B;border:1px solid var(--line-1);padding:18px 20px;overflow-x:auto;font-family:var(--font-num);font-size:14px;line-height:1.7;color:#C8E6D6}
.cms-content code:not(pre code){font-family:var(--font-num);font-size:.92em;background:var(--bg-3);color:var(--accent);padding:2px 7px;border-radius:6px}
.cms-content img{border-radius:var(--radius-lg);margin:24px auto;width:100%;height:auto}
.cms-content table{width:100%;border-collapse:collapse;margin:28px 0;font-size:15px;overflow:hidden}
.cms-content th{background:var(--bg-3);color:var(--text-1);text-align:left;padding:12px 14px;font-weight:600}
.cms-content th,.cms-content td{border:1px solid var(--line-1)}
.cms-content td{padding:11px 14px;color:var(--text-2)}
.cms-content tr:nth-child(even) td{background:rgba(255,255,255,.015)}
.cms-content hr{height:1px;border:0;background:var(--line-2);margin:40px 0}

/* Article tags */
.article-end{max-width:780px;padding:30px 0 12px;border-top:1px solid var(--line-1);margin-top:54px}
.tag-head{font-size:14px;color:var(--text-1);display:flex;align-items:center;gap:8px;margin-bottom:14px;font-weight:600}
.tag-head i{color:var(--accent)}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;max-width:780px}
.tag-chip{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--text-2);border-radius:999px;border:1px solid var(--line-2);background:var(--bg-2);padding:6px 14px;transition:border-color .2s,color .2s,transform .2s}
.tag-chip i{font-size:10px;color:var(--accent)}
.tag-chip:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}

/* Related */
.related-section{padding:72px 0 100px;background:var(--bg-1);border-top:1px solid var(--line-1)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.12em;color:var(--accent);text-transform:uppercase;font-family:var(--font-num);margin-bottom:10px}
.section-eyebrow i{font-size:12px}
.section-title{font-size:32px;line-height:1.3;color:var(--text-1);font-weight:700;letter-spacing:-.5px}
.section-sub{color:var(--text-3);font-size:15px;max-width:560px;margin-top:10px;line-height:1.8}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{overflow:hidden;background:var(--bg-2);border:1px solid var(--line-1);border-radius:var(--radius-lg);transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;display:flex;flex-direction:column}
.related-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(45,225,166,.2)}
.rel-thumb{overflow:hidden;aspect-ratio:16/9;background:var(--bg-1)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.related-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-title{font-size:17px;line-height:1.55;color:var(--text-1);font-weight:650;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-title i{color:var(--accent);font-size:11px;margin-right:7px}
.rel-title:hover{color:var(--accent)}
.rel-desc{color:var(--text-3);font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:auto}
.rel-meta{margin-top:8px;color:var(--text-3);font-size:12px;font-family:var(--font-num);display:flex;gap:14px}

/* CTA strip */
.cta-strip{background:var(--bg-2);border:1px solid var(--line-1);border-radius:var(--radius-xl);padding:58px 64px;position:relative;overflow:hidden;margin:80px 0 0}
.cta-strip::after{content:"";position:absolute;right:-80px;top:-70px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(45,225,166,.13),transparent 70%)}
.cta-content{max-width:680px;position:relative;z-index:2}
.cta-strip h2{color:var(--text-1);font-size:30px;line-height:1.4;font-weight:700;letter-spacing:-.4px;margin-bottom:12px}
.cta-strip p{color:var(--text-2);font-size:15px;line-height:1.8;margin-bottom:0}
.cta-strip .cta-actions{margin-top:26px;display:flex;gap:16px;flex-wrap:wrap}
.cta-note{font-size:13px;color:var(--text-3);margin-top:18px}
.cta-note i{color:var(--gold);margin-right:5px}

/* Not found */
.not-found-wrap{padding:40px 0 110px}
.not-found-card{max-width:620px;margin:0 auto;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--radius-xl);padding:70px 46px;text-align:center}
.not-found-icon{display:inline-flex;align-items:center;justify-content:center;width:82px;height:82px;border-radius:50%;background:rgba(228,87,61,.09);border:1px solid rgba(228,87,61,.24);margin-bottom:26px}
.not-found-icon i{color:var(--danger);font-size:34px}
.not-found-card h1{color:var(--text-1);font-size:26px;font-weight:700;margin-bottom:14px}
.not-found-card p{color:var(--text-3);font-size:15px}
.not-found-card .btn{margin-top:26px}

/* ======= Footer ======= */
.site-footer{background:#050706;border-top:1px solid var(--line-1);padding:76px 0 34px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:58px}
.footer-brand .brand-name{font-size:20px}
.footer-desc{color:var(--text-3);font-size:14px;line-height:1.9;margin-top:18px;max-width:420px}
.footer-col h4{color:var(--text-1);font-size:15px;font-weight:700;margin-bottom:20px;letter-spacing:.02em}
.footer-col ul li{color:var(--text-3);font-size:14px;line-height:2.1}
.footer-col a{color:var(--text-3);transition:color .2s,padding-left .2s;display:inline-block}
.footer-col a:hover{color:var(--accent);padding-left:5px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-top:56px;padding-top:26px;border-top:1px solid var(--line-1);color:var(--text-3);font-size:13px}
.tech-domain{font-family:var(--font-num);font-size:12px;color:#5D6D65}

/* Reading progress line */
.reading-bar{position:fixed;top:0;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--gold));z-index:999;transition:width .1s linear}

/* ======= responsive ======= */
@media(min-width:1500px){
  .container{max-width:1320px}
}
@media(max-width:1199px){
  .site-nav{gap:0;position:fixed;top:108px;right:-340px;background:rgba(9,13,11,.98);backdrop-filter:blur(16px);border-left:1px solid var(--line-1);width:300px;height:calc(100vh - 108px);padding:34px 26px;flex-direction:column;align-items:stretch;gap:4px;transition:right .3s ease;box-shadow:-20px 0 66px rgba(0,0,0,.4)}
  .site-nav.open{right:0}
  .site-nav .nav-link{height:auto;padding:13px 8px;border-bottom:1px solid rgba(255,255,255,.055);justify-content:flex-start;font-size:16px}
  .nav-link::after{display:none!important}
  .nav-link.active{color:var(--accent);padding-left:15px;background:rgba(45,225,166,.06);border-radius:10px}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .aside-toc{display:none}
}
@media(max-width:1024px){
  .article-hero h1{font-size:32px}
  .article-hero{padding:62px 0 50px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:767px){
  .article-hero h1{font-size:27px}
  .article-hero-inner{gap:16px}
  .article-hero-meta{gap:10px 18px}
  .article-section{padding:44px 0 66px}
  .article-layout{gap:0}
  .related-grid{grid-template-columns:1fr}
  .cta-strip{padding:38px 26px;border-radius:20px;margin-top:54px}
  .cta-strip h2{font-size:24px}
  .section-head-row{flex-direction:column;gap:12px}
  .section-title{font-size:26px}
  .footer-grid{grid-template-columns:1fr;gap:38px}
  .footer-col ul li{line-height:2.2}
  .cms-content h2{font-size:21px}
  .cms-content{font-size:15px;line-height:2}
  .article-cover{aspect-ratio:unset}
  .not-found-card{padding:48px 24px}
  .cms-content pre{font-size:13px;padding:16px}
  .cms-content table{display:block;overflow-x:auto;white-space:nowrap}
  .article-cover img{aspect-ratio:16/9}
}
@media(max-width:480px){
  .container{padding:0 20px}
  .site-nav{top:104px;height:calc(100% - 104px)}
  .topbar-links .online-dot,.topbar-links .online-text{display:none}
  .mainnav{height:64px;gap:12px}
  .brand-name{font-size:17px}
  .brand-mark{width:31px;height:31px;font-size:17px}
  .nav-toggle{width:42px;height:42px}
  .related-grid{gap:18px}
  .article-hero h1{font-size:25px}
  .article-hero-meta{font-size:13px}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding-top:20px}
  .footer-bottom span:first-child{margin-bottom:6px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category1 */
:root {
  --bg-0: #080B0A;
  --bg-1: #0D1210;
  --bg-2: #131A17;
  --bg-3: #1A231F;
  --line-1: rgba(255,255,255,.08);
  --line-2: rgba(255,255,255,.14);
  --text-1: #EDF3F0;
  --text-2: #A3B5AC;
  --text-3: #6C7F77;
  --accent: #2DE1A6;
  --accent-2: #1EA87F;
  --accent-soft: rgba(45,225,166,.08);
  --gold: #D9A45B;
  --danger: #E4573D;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-card: 0 10px 30px rgba(0,0,0,.25);
  --shadow-hover: 0 18px 44px rgba(0,0,0,.4), 0 0 0 1px rgba(45,225,166,.06);
  --font-cn: "PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-mono: "JetBrains Mono","DIN Alternate","Roboto Mono","SFMono-Regular",Consolas,monospace;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg-0);
  color: var(--text-1);
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body::-webkit-scrollbar {
  width: 10px;
}
body::-webkit-scrollbar-track {
  background: var(--bg-0);
}
body::-webkit-scrollbar-thumb {
  background: var(--bg-3);
  border-radius: 20px;
}
body::-webkit-scrollbar-thumb:hover {
  background: #26332d;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .15s ease;
}
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}
button {
  border: none;
  background: none;
  cursor: pointer;
}
ul,
ol {
  list-style: none;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 40px;
  padding-right: 40px;
}
.site-header {
  position: relative;
  z-index: 200;
}
.topbar {
  background: rgba(11,15,13,.92);
  border-bottom: 1px solid var(--line-1);
}
.topbar-inner {
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-3);
  gap: 16px;
}
.topbar-domain,
.topbar-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.topbar-domain i {
  color: var(--accent);
  opacity: .85;
}
.online-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(45,225,166,.12);
  display: inline-block;
  flex: 0 0 auto;
}
.topbar-links {
  gap: 18px;
}
.topbar-links a {
  color: var(--text-3);
  transition: color .15s;
}
.topbar-links a:hover {
  color: var(--accent);
}
.mainnav-wrap {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(8,11,10,.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-1);
}
.mainnav {
  display: flex;
  align-items: center;
  gap: 36px;
  height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #081009;
  font-size: 19px;
  font-weight: 800;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(45,225,166,.18);
}
.brand-name {
  font-size: 19px;
  font-weight: 650;
  letter-spacing: .4px;
  color: var(--text-1);
  white-space: nowrap;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 auto;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 11px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  border-radius: 8px;
  white-space: nowrap;
  transition: color .15s ease;
}
.nav-link:hover {
  color: var(--accent);
}
.nav-link.active {
  color: var(--accent);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 4px;
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 999px;
}
.nav-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-md);
  font-weight: 600;
  line-height: 1.2;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease, opacity .15s ease;
  position: relative;
}
.btn-sm {
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
}
.btn-md {
  height: 50px;
  padding: 0 26px;
  font-size: 15px;
}
.btn-primary {
  background: var(--accent);
  color: #081009;
  box-shadow: 0 10px 24px rgba(45,225,166,.16);
}
.btn-primary:hover {
  background: #51EDBA;
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(45,225,166,.24);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-block {
  width: 100%;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 7px;
  border-radius: 10px;
  border: 1px solid var(--line-1);
  background: transparent;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-1);
  border-radius: 20px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle.active span:first-child {
  transform: translateY(4.5px) rotate(45deg);
}
.nav-toggle.active span:last-child {
  transform: translateY(-4.5px) rotate(-45deg);
}
.page-hero {
  position: relative;
  background-color: var(--bg-1);
  background-image: url('/assets/images/backpic/back-1.webp');
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--line-1);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(75deg, rgba(8,11,10,.97) 0%, rgba(8,11,10,.86) 48%, rgba(8,11,10,.62) 100%),
    radial-gradient(circle at 85% 16%, rgba(45,225,166,.14), transparent 42%);
}
.page-hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 60px;
  align-items: center;
  padding-top: 84px;
  padding-bottom: 96px;
}
.hero-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 26px;
}
.hero-breadcrumb a {
  color: var(--text-3);
}
.hero-breadcrumb a:hover {
  color: var(--accent);
}
.hero-breadcrumb i {
  font-size: 11px;
  color: var(--text-3);
  opacity: .5;
}
.hero-breadcrumb span {
  color: var(--accent);
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .6px;
  color: var(--accent);
  background: rgba(45,225,166,.08);
  border: 1px solid rgba(45,225,166,.16);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 20px;
}
.hero-tag i {
  font-size: 9px;
  color: var(--accent);
}
.page-hero h1 {
  font-size: 48px;
  font-weight: 750;
  line-height: 1.25;
  letter-spacing: -1px;
  color: var(--text-1);
  margin-bottom: 20px;
}
.hero-desc {
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.85;
  max-width: 520px;
  margin-bottom: 28px;
}
.hero-note {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  color: var(--text-3);
}
.hero-note span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-note i {
  color: var(--accent);
  font-size: 10px;
}
.hero-panel {
  border: 1px solid var(--line-2);
  border-radius: var(--radius-xl);
  padding: 12px;
  background: rgba(19,26,23,.82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
}
.hero-window {
  border: 1px solid var(--line-1);
  background: rgba(8,11,10,.72);
  border-radius: 18px;
  overflow: hidden;
}
.hero-window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 16px;
  background: rgba(255,255,255,.03);
  border-bottom: 1px solid var(--line-1);
}
.hero-window-bar > span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.18);
}
.hero-window-bar > span:first-child {
  background: #E4573D;
}
.hero-window-bar > span:nth-child(2) {
  background: #D9A45B;
}
.hero-window-bar > span:nth-child(3) {
  background: #2DE1A6;
}
.hero-window-bar code {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line-1);
  border-radius: 6px;
  padding: 3px 12px;
}
.hero-window-body {
  padding: 24px;
}
.status-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-1);
  font-size: 14px;
}
.status-item:last-child {
  border-bottom: none;
}
.status-item span {
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.status-item span i {
  color: var(--accent);
  font-size: 12px;
  width: 20px;
  text-align: center;
}
.status-item em {
  font-style: normal;
  color: var(--text-1);
  font-family: var(--font-mono);
  font-size: 13px;
  background: rgba(45,225,166,.08);
  border: 1px solid rgba(45,225,166,.14);
  padding: 3px 12px;
  border-radius: 999px;
}
.quality-label {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 4px;
  margin-bottom: 6px;
}
.quality-bar {
  height: 6px;
  background: rgba(255,255,255,.06);
  border-radius: 12px;
  overflow: hidden;
}
.quality-bar i {
  display: block;
  height: 100%;
  width: 94%;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  border-radius: 12px;
  box-shadow: 0 0 16px rgba(45,225,166,.3);
}
.section {
  padding: 96px 0;
  position: relative;
}
.section--alt {
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
  border-bottom: 1px solid var(--line-1);
}
.section-head {
  max-width: 720px;
  margin-bottom: 56px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(45,225,166,.07);
  border: 1px solid rgba(45,225,166,.14);
  border-radius: 999px;
  padding: 7px 16px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 680;
  line-height: 1.3;
  color: var(--text-1);
  letter-spacing: -.6px;
  margin: 20px 0 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.8;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
.feature-card {
  grid-column: span 6;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(45,225,166,.18);
  box-shadow: var(--shadow-hover);
}
.feature-card--wide {
  grid-column: span 7;
  margin-top: 28px;
}
.feature-card--side {
  grid-column: span 5;
  margin-top: 28px;
}
.card-media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-3);
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease, opacity .3s ease;
}
.feature-card:hover .card-media img {
  transform: scale(1.03);
}
.card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,11,10,0) 50%, rgba(8,11,10,.1) 100%);
  pointer-events: none;
}
.card-body {
  padding: 26px;
}
.card-flag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(45,225,166,.1);
  border-radius: 999px;
  padding: 5px 12px;
  margin-bottom: 16px;
}
.card-body h3 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text-1);
  margin-bottom: 12px;
}
.card-body p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 18px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-1);
  transition: color .15s ease;
}
.text-link i {
  transition: transform .15s ease;
  font-size: 12px;
}
.text-link:hover {
  color: var(--accent);
}
.text-link:hover i {
  transform: translateX(4px);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.step-card {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  padding: 30px 26px 26px;
  transition: border-color .15s ease, transform .15s ease, background .15s ease;
}
.step-card:hover {
  border-color: rgba(45,225,166,.2);
  background: var(--bg-3);
  transform: translateY(-3px);
}
.step-num {
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 5px 10px;
  margin-bottom: 18px;
}
.step-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
}
.step-card::after {
  content: "";
  position: absolute;
  right: -12px;
  top: 40%;
  width: 12px;
  height: 1px;
  background: var(--line-2);
}
.step-card:last-child::after {
  display: none;
}
.assure-panel {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border: 1px solid var(--line-1);
  padding: 56px;
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 48px;
  background-color: var(--bg-2);
}
.assure-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(8,11,10,.96) 15%, rgba(13,18,16,.9) 100%);
}
.assure-panel > * {
  position: relative;
  z-index: 1;
}
.assure-intro .eyebrow {
  margin-bottom: 14px;
}
.assure-intro h2 {
  font-size: 30px;
  line-height: 1.35;
  color: var(--text-1);
  margin-bottom: 14px;
  letter-spacing: -.4px;
}
.assure-intro p {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.85;
}
.assure-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.assure-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  background: rgba(19,26,23,.72);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: border-color .15s ease;
}
.assure-item:hover {
  border-color: rgba(45,225,166,.22);
}
.assure-item .num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  background: var(--accent-soft);
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.assure-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 4px;
}
.assure-item p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}
.faq-row {
  border-bottom: 1px solid var(--line-1);
}
.faq-row:first-child {
  border-top: 1px solid var(--line-1);
}
.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 8px;
  text-align: left;
  border-radius: 8px;
  min-height: 60px;
}
.faq-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  line-height: 1.6;
}
.faq-icon {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex: 0 0 auto;
  transition: transform .3s ease, background .3s ease, border-color .3s ease;
}
.faq-icon i {
  font-size: 13px;
}
.faq-row.open .faq-icon {
  transform: rotate(45deg);
  background: var(--accent-soft);
  border-color: rgba(45,225,166,.35);
}
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .3s ease;
}
.faq-answer-inner {
  overflow: hidden;
}
.faq-row.open .faq-answer {
  grid-template-rows: 1fr;
}
.faq-answer p {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.8;
  padding: 0 8px 22px;
  max-width: 760px;
}
.contact-section {
  background: linear-gradient(rgba(8,11,10,.94), rgba(8,11,10,.94)), url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  border-top: 1px solid var(--line-1);
}
.contact-grid {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 60px;
  align-items: center;
}
.contact-copy h2 {
  font-size: 36px;
  line-height: 1.3;
  color: var(--text-1);
  letter-spacing: -.8px;
  margin: 18px 0 16px;
}
.contact-copy > p {
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 28px;
}
.contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 26px;
}
.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-2);
  font-size: 15px;
}
.contact-list li i {
  color: var(--accent);
  font-size: 13px;
  line-height: 1.9;
}
.contact-card {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
  padding: 26px 30px;
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: 430px;
}
.contact-card i {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid rgba(45,225,166,.16);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.contact-card h4 {
  font-size: 16px;
  color: var(--text-1);
  font-weight: 600;
}
.contact-card p {
  font-size: 14px;
  color: var(--text-3);
}
.form-card {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-card);
}
.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  background: rgba(45,225,166,.09);
  border: 1px solid rgba(45,225,166,.2);
  color: var(--accent);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 14px;
  margin-bottom: 20px;
}
.form-success.show {
  display: flex;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group.full {
  grid-column: span 2;
}
.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
}
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--line-1);
  background: #0C0F0D;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-1);
  transition: border-color .15s ease, box-shadow .15s ease;
  min-height: 46px;
}
.form-group textarea {
  min-height: 110px;
  resize: vertical;
  line-height: 1.7;
}
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45,225,166,.12);
}
.form-group select option {
  background: var(--bg-2);
  color: var(--text-1);
}
.form-foot {
  font-size: 13px;
  color: var(--text-3);
  margin-top: 16px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.form-foot i {
  color: var(--gold);
  margin-top: 4px;
}
.site-footer {
  background: #070A09;
  border-top: 1px solid var(--line-1);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding: 56px 0 44px;
}
.footer-brand .brand {
  margin-bottom: 20px;
}
.footer-desc {
  max-width: 360px;
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.8;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col a {
  color: var(--text-2);
  font-size: 14px;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-col li {
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.6;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  border-top: 1px solid var(--line-1);
  font-size: 13px;
  color: var(--text-3);
  gap: 16px;
  flex-wrap: wrap;
}
.tech-domain {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
}
@media (max-width: 1100px) {
  .brand-name {
    font-size: 17px;
  }
  .nav-link {
    padding-left: 9px;
    padding-right: 9px;
  }
  .page-hero h1 {
    font-size: 40px;
  }
  .page-hero .container {
    gap: 44px;
  }
  .step-card::after {
    display: none;
  }
  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 1024px) {
  .section {
    padding: 72px 0;
  }
  .page-hero .container {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-top: 56px;
    padding-bottom: 70px;
  }
  .hero-desc {
    max-width: 680px;
  }
  .hero-panel {
    max-width: 680px;
  }
  .feature-card,
  .feature-card--wide,
  .feature-card--side {
    grid-column: span 6;
    margin-top: 0;
  }
  .feature-grid {
    gap: 18px;
  }
  .assure-panel {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 38px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }
}
@media (max-width: 767px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .topbar-links .online-text,
  .topbar-domain .online-text,
  .topbar-links a:first-child {
    display: none;
  }
  .mainnav {
    gap: 12px;
  }
  .brand-name {
    font-size: 16px;
    letter-spacing: .2px;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 17px;
  }
  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 300;
    width: min(84vw, 340px);
    height: 100vh;
    margin: 0;
    background: rgba(13,18,16,.98);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-left: 1px solid var(--line-1);
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 84px 28px 32px;
    transform: translateX(100%);
    transition: transform .3s ease;
    box-shadow: -20px 0 40px rgba(0,0,0,.3);
  }
  .site-nav.open {
    transform: translateX(0);
  }
  .site-nav .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 16px 10px;
    font-size: 20px;
    border-bottom: 1px solid var(--line-1);
    border-radius: 0;
  }
  .site-nav .nav-link.active::after {
    left: 10px;
    transform: none;
    bottom: 6px;
  }
  .nav-tools {
    margin-left: auto;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-cta {
    display: none;
  }
  .page-hero h1 {
    font-size: 34px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .feature-grid {
    display: block;
  }
  .feature-card {
    margin-bottom: 18px;
  }
  .card-body {
    padding: 22px;
  }
  .card-body h3 {
    font-size: 19px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .assure-panel {
    padding: 26px 20px;
  }
  .assure-panel h2 {
    font-size: 24px;
  }
  .assure-list {
    flex-direction: column;
  }
  .assure-item {
    grid-template-columns: 40px 1fr;
    gap: 12px;
    padding: 16px;
  }
  .assure-item .num {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }
  .faq-title {
    font-size: 15px;
  }
  .faq-answer p {
    font-size: 14px;
    padding-bottom: 18px;
  }
  .contact-section .section-head h2,
  .contact-copy h2 {
    font-size: 28px;
  }
  .contact-copy > p {
    font-size: 15px;
  }
  .contact-card {
    padding: 20px;
  }
  .form-card {
    padding: 24px 20px;
  }
  .form-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .form-group.full {
    grid-column: span 1;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 48px 0 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 480px) {
  .page-hero h1 {
    font-size: 30px;
  }
  .hero-note {
    flex-direction: column;
    gap: 10px;
  }
  .hero-window-body {
    padding: 16px;
  }
  .status-item {
    font-size: 13px;
  }
  .contact-card {
    align-items: flex-start;
  }
  .btn-block {
    width: 100%;
  }
}

/* roulang page: category2 */
/* ========= 设计令牌 ========= */
:root{
  --bg-0:#080B0A;
  --bg-1:#0D1210;
  --bg-2:#131A17;
  --bg-3:#1A231F;
  --line-1:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --text-1:#EDF3F0;
  --text-2:#A3B5AC;
  --text-3:#6C7F77;
  --accent:#2DE1A6;
  --accent-2:#1EA87F;
  --accent-soft:rgba(45,225,166,.1);
  --gold:#D9A45B;
  --danger:#E4573D;
  --radius-sm:6px;
  --radius-md:10px;
  --radius-lg:16px;
  --radius-xl:24px;
  --shadow-card:0 10px 30px rgba(0,0,0,.25);
  --shadow-hover:0 18px 44px rgba(0,0,0,.4), 0 0 0 1px rgba(45,225,166,.06);
  --font-main:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-mono:"JetBrains Mono","DIN Alternate","Roboto Mono",SFMono-Regular,Consolas,monospace;
}
/* ========= Reset / Base ========= */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-main);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}
input,select,textarea{
  font-family:inherit;
  font-size:15px;
  color:var(--text-1);
  width:100%;
  background:#0C0F0D;
  border:1px solid var(--line-1);
  border-radius:var(--radius-sm);
  padding:11px 14px;
  outline:none;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
input::placeholder,textarea::placeholder{color:var(--text-3)}
input:focus,select:focus,textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(45,225,166,.12);
}
select{cursor:pointer;appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) calc(1em + 6px),calc(100% - 15px) calc(1em + 6px);background-size:5px 5px,5px 5px;background-repeat:no-repeat}
label{font-size:14px;color:var(--text-2);display:inline-block;margin-bottom:6px}
::-webkit-scrollbar{width:10px;height:8px}
::-webkit-scrollbar-thumb{background:#28332e;border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:#34423b}
::selection{background:rgba(45,225,166,.25);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{
  width:min(1280px,100% - 48px);
  margin:0 auto;
}
.container-lg{width:min(1100px,100% - 48px);margin:0 auto}
.section{padding:92px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:32px;
  line-height:1.3;
  font-weight:650;
  letter-spacing:-.3px;
}
.section-head p{
  color:var(--text-2);
  max-width:600px;
  font-size:15px;
}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:2px;
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-kicker::before{
  content:"";
  width:22px;height:1px;
  background:var(--accent);
}
/* ========= 头部 ========= */
.site-header{position:sticky;top:0;z-index:100}
.topbar{
  height:36px;
  background:rgba(10,13,12,.96);
  border-bottom:1px solid var(--line-1);
}
.topbar-inner{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-3);
}
.topbar-domain{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
}
.topbar-links{display:inline-flex;align-items:center;gap:18px}
.topbar-links a{
  color:var(--text-2);
  transition:color .17s;
}
.topbar-links a:hover{color:var(--accent)}
.online-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 8px rgba(45,225,166,.9);
  display:inline-block;
}
.online-text{color:var(--text-2);letter-spacing:.3px}
.mainnav-wrap{
  background:rgba(8,11,10,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-1);
}
.mainnav{
  min-height:72px;
  display:flex;
  align-items:center;
  position:relative;
  gap:16px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-right:30px;
  flex:0 0 auto;
}
.brand-mark{
  width:38px;height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(140deg,var(--accent),#a6f5d6 70%);
  color:#07100b;
  font-size:19px;font-weight:800;
  border-radius:10px;
  box-shadow:0 0 22px rgba(45,225,166,.28);
}
.brand-name{
  color:var(--text-1);
  font-size:17px;
  font-weight:700;
  letter-spacing:.4px;
  white-space:nowrap;
}
.brand-name:hover{color:var(--accent)}
.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(20px,3vw,40px);
}
.nav-link{
  display:inline-flex;
  align-items:center;
  height:72px;
  position:relative;
  color:var(--text-1);
  font-size:15px;
  white-space:nowrap;
  transition:color .2s;
}
.nav-link:hover{color:var(--accent)}
.nav-link.active{color:var(--accent)}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:16px;
  width:20px;height:2px;
  border-radius:3px;
  background:var(--accent);
  box-shadow:0 0 10px rgba(45,225,166,.7);
}
.nav-tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:16px;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  border-radius:8px;
}
.nav-toggle span{
  width:22px;height:2px;
  border-radius:2px;
  background:var(--text-1);
  transition:transform .25s,opacity .2s;
}
.nav-toggle.open span:first-child{transform:translateY(3.5px) rotate(45deg)}
.nav-toggle.open span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
/* ========= 按钮与徽章 ========= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  line-height:1;
  padding:14px 24px;
  border-radius:var(--radius-md);
  font-weight:600;
  letter-spacing:.2px;
  transition:transform .18s,background .18s,border-color .18s,color .18s,box-shadow .18s;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{
  background:var(--accent);
  color:#07100b;
  box-shadow:0 0 0 rgba(45,225,166,.3);
}
.btn-primary:hover{
  background:#5AEABF;
  transform:translateY(-2px);
  box-shadow:0 12px 26px rgba(45,225,166,.2);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  color:var(--text-1);
  border:1px solid var(--line-2);
}
.btn-ghost:hover{
  color:var(--accent);
  border-color:var(--accent);
  transform:translateY(-2px);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:99px;
  background:var(--accent-soft);
  border:1px solid rgba(45,225,166,.14);
  color:var(--accent);
  font-size:12px;
  font-weight:600;
}
.badge-gold{
  background:rgba(217,164,91,.12);
  border-color:rgba(217,164,91,.24);
  color:var(--gold);
}
/* ========= 分类页 Hero ========= */
.page-hero{
  padding:90px 0 72px;
  position:relative;
  background-color:var(--bg-0);
  background-image:url('/assets/images/backpic/back-2.webp');
  background-repeat:no-repeat;
  background-position:center;
  background-size:cover;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(100deg,rgba(8,11,10,.96) 0%,rgba(8,11,10,.88) 46%,rgba(8,11,10,.58) 100%),
    radial-gradient(circle at 80% 30%,rgba(45,225,166,.09),transparent 42%);
}
.page-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:140px;
  background:linear-gradient(to bottom,transparent,rgba(8,11,10,.9));
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  align-items:center;
  gap:60px;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-2);
  font-size:14px;
  margin-bottom:22px;
}
.hero-eyebrow i{color:var(--accent)}
.hero-copy h1{
  font-size:46px;
  line-height:1.2;
  font-weight:750;
  letter-spacing:-1px;
  margin-bottom:18px;
}
.hero-copy h1 .brand-block{
  display:block;
  color:var(--text-2);
  font-size:21px;
  letter-spacing:.5px;
  margin-bottom:8px;
  font-weight:600;
}
.hero-copy h1 .security-block{
  display:block;
  position:relative;
}
.hero-copy h1 .security-block::after{
  content:"";
  display:block;
  width:64px;height:4px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--accent),transparent);
  margin-top:12px;
}
.hero-subtext{
  color:var(--text-2);
  font-size:16px;
  max-width:560px;
  margin-top:14px;
}
.hero-check-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin:28px 0 32px;
}
.hero-check-list span{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--text-2);
  font-size:14px;
}
.hero-check-list i{color:var(--accent)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
/* hero 状态终端 */
.terminal-card{
  background:rgba(19,26,23,.7);
  border:1px solid var(--line-2);
  border-radius:var(--radius-xl);
  backdrop-filter:blur(10px);
  box-shadow:0 24px 70px rgba(0,0,0,.45),0 0 25px rgba(45,225,166,.08);
  overflow:hidden;
}
.terminal-top{
  display:flex;
  align-items:center;
  gap:10px;
  padding:14px 18px;
  border-bottom:1px solid var(--line-1);
  background:rgba(8,11,10,.34);
}
.term-dot{width:10px;height:10px;border-radius:50%}
.td-red{background:#F1635A}
.td-yellow{background:#E8C15A}
.td-green{background:var(--accent)}
.terminal-top .term-title{
  margin-left:6px;
  font-size:12px;
  color:var(--text-2);
  font-family:var(--font-mono);
  letter-spacing:.4px;
}
.term-live{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:11px;
  color:var(--accent);
  font-family:var(--font-mono);
}
.term-live::before{
  content:"";
  width:6px;height:6px;
  background:var(--accent);
  box-shadow:0 0 9px rgba(45,225,166,.9);
  border-radius:50%;
  animation:pulse 2s infinite;
}
@keyframes pulse{50%{opacity:.4}}
.terminal-body{padding:24px 22px 26px}
.scan-title{
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.6px;
  margin-bottom:12px;
  font-family:var(--font-mono);
}
.scan-list{
  display:grid;
  gap:9px;
}
.scan-item{
  display:flex;
  align-items:center;
  gap:11px;
  padding:9px 11px;
  background:rgba(8,11,10,.24);
  border:1px solid rgba(255,255,255,.05);
  border-radius:8px;
  font-size:13px;
  color:var(--text-1);
}
.scan-item i{color:var(--accent);font-size:13px}
.scan-item .warning{
  margin-left:auto;
  color:var(--gold);
  font-size:12px;
  font-family:var(--font-mono);
}
.scan-item .success-txt{
  margin-left:auto;
  color:var(--accent);
  font-size:12px;
  font-family:var(--font-mono);
}
.term-divider{
  margin:20px 0;
  height:1px;
  background:var(--line-1);
}
.environment-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.env-tag{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-1);
  padding:5px 11px;
  font-size:12px;
  border-radius:99px;
  color:var(--text-2);
}
.env-tag i{color:var(--accent);margin-right:3px}
.terminal-foot{
  margin-top:22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:18px;
  border-top:1px dashed rgba(255,255,255,.12);
  font-size:12px;
  color:var(--text-3);
}
.terminal-foot strong{color:var(--text-2);font-weight:500}
/* ========= 安全能力矩阵 ========= */
.cap-section{background:var(--bg-0)}
.cap-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:24px;
}
.cap-card{
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--radius-lg);
  padding:26px;
  display:flex;
  flex-direction:column;
  min-height:250px;
  position:relative;
  transition:transform .25s,border-color .25s,box-shadow .25s,background .25s;
  overflow:hidden;
}
.cap-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(45,225,166,.28);
  background:var(--bg-3);
}
.cap-card:nth-child(1){grid-column:span 3}
.cap-card:nth-child(2){grid-column:span 3}
.cap-card:nth-child(3){grid-column:span 2}
.cap-card:nth-child(4){grid-column:span 2}
.cap-card:nth-child(5){grid-column:span 2}
.cap-card:nth-child(6){grid-column:span 6}
.cap-icon{
  width:44px;height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--accent-soft);
  border-radius:12px;
  color:var(--accent);
  font-size:19px;
  margin-bottom:20px;
}
.cap-card h3{font-size:20px;font-weight:600;margin-bottom:10px;color:var(--text-1)}
.cap-card p{color:var(--text-2);font-size:15px;line-height:1.75;margin-bottom:16px;flex:1}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  color:var(--text-3);
  transition:color .2s,gap .2s;
}
.card-link:hover{color:var(--accent);gap:11px}
.cap-card:nth-child(6){
  flex-direction:row;
  align-items:center;
  background:linear-gradient(102deg,rgba(45,225,166,.07),transparent 55%),
             var(--bg-2);
  border-color:rgba(45,225,166,.24);
}
.cap-card:nth-child(6) .cap-icon{
  width:74px;height:74px;
  margin:0 24px 0 0;
}
/* ========= 安全自检对照 ========= */
.compare-section{
  background:linear-gradient(180deg,var(--bg-0),var(--bg-1));
  position:relative;
}
.compare-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.split-title{margin-bottom:22px}
.risk-list{display:grid;gap:0}
.risk-line{
  display:grid;
  grid-template-columns:42px 1fr;
  gap:9px;
  padding:20px 0;
  border-bottom:1px solid var(--line-1);
}
.risk-line:first-child{padding-top:4px}
.risk-num{
  font-family:var(--font-mono);
  color:var(--accent);
  font-size:14px;
  line-height:2;
}
.risk-line h3{font-size:17px;font-weight:600}
.risk-line p{font-size:14px;color:var(--text-2);margin-top:5px;line-height:1.75}
.compare-viz{
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--radius-xl);
  padding:30px;
  box-shadow:var(--shadow-card);
}
.compare-viz-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:22px;
}
.compare-viz-header h3{font-size:18px}
.compare-viz-header span{
  color:var(--text-3);
  font-size:12px;
}
.compare-bar-group{margin-bottom:22px}
.compare-bar-label{
  display:flex;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:9px;
}
.compare-row{
  display:grid;
  grid-template-columns:92px 1fr 34px;
  align-items:center;
  gap:12px;
  margin-bottom:9px;
  color:var(--text-3);
  font-size:12px;
}
.compare-row b{
  font-family:var(--font-mono);
  color:var(--text-2);
  font-weight:500;
  text-align:right;
}
.bar-track{
  height:8px;
  background:rgba(255,255,255,.05);
  border-radius:99px;
  overflow:hidden;
  position:relative;
}
.bar-track i{
  width:var(--w, 40%);
  height:100%;
  display:block;
  border-radius:99px;
  background:rgba(255,255,255,.12);
}
.bar-row-dark i{background:rgba(108,127,119,.32)}
.bar-row-green i{
  background:linear-gradient(90deg,var(--accent-2),var(--accent));
  box-shadow:0 0 18px rgba(45,225,166,.28);
}
.compare-note{margin-top:17px;font-size:12px;color:var(--text-3);text-align:center}
/* ========= 场景服务区 ========= */
.scene-section{background:var(--bg-1)}
.scene-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:22px;
}
.scene-card{
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .24s,border-color .24s,box-shadow .24s;
}
.scene-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(45,225,166,.22)}
.scene-card:nth-child(1){grid-column:span 3}
.scene-card:nth-child(2){grid-column:span 2}
.scene-card:nth-child(3){grid-column:span 1}
@media(max-width:1023px){
  .scene-card:nth-child(1),
  .scene-card:nth-child(2),
  .scene-card:nth-child(3){grid-column:span 2}
}
.scene-img{
  aspect-ratio:16/10;
  overflow:hidden;
  position:relative;
}
.scene-img img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.scene-card:hover .scene-img img{transform:scale(1.03)}
.scene-img::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(8,11,10,.48),transparent 55%);
}
.scene-tag{
  position:absolute;
  left:14px;top:14px;
  z-index:3;
}
.scene-content{
  padding:20px 22px 23px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.scene-content h3{font-size:18px;font-weight:600;margin-bottom:9px}
.scene-content p{color:var(--text-2);font-size:14px;line-height:1.75;margin-bottom:13px;flex:1}
.scene-content a{
  color:var(--accent);
  font-size:13px;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
/* ========= 流程区 ========= */
.steps-section{background:var(--bg-0)}
.steps-wrap{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.step-card{
  padding:28px 22px 25px;
  background:var(--bg-2);
  border-radius:var(--radius-lg);
  border:1px solid var(--line-1);
  border-top:2px solid transparent;
  transition:border-color .25s,transform .25s;
}
.step-card:hover{
  border-top-color:var(--accent);
  transform:translateY(-4px);
}
.step-num{
  font-family:var(--font-mono);
  color:var(--accent);
  font-size:13px;
  letter-spacing:1px;
  margin-bottom:18px;
  display:block;
}
.step-card h3{font-size:18px;margin-bottom:10px}
.step-card p{font-size:14px;color:var(--text-2);line-height:1.75}
/* ========= 服务清单 ========= */
.guard-section{background:var(--bg-1)}
.guard-chips{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.guard-chip{
  display:inline-flex;
  align-items:center;
  gap:9px;
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:11px;
  padding:13px 17px;
  font-size:14px;
  color:var(--text-2);
  transition:color .2s,border-color .2s,background .2s;
}
.guard-chip i{color:var(--accent)}
.guard-chip:hover{
  color:var(--text-1);
  border-color:var(--line-2);
  background:var(--bg-3);
}
/* ========= FAQ ========= */
.faq-section{background:var(--bg-0)}
.faq-container{
  max-width:920px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--line-1);
}
.faq-item:first-child{border-top:1px solid var(--line-1)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  padding:20px 2px;
  font-size:16px;
  color:var(--text-1);
  font-weight:500;
  transition:color .18s;
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  width:30px;height:30px;
  border:1px solid var(--line-2);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--text-2);
  flex:0 0 auto;
  transition:transform .35s,color .2s,border-color .2s;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  color:var(--accent);
  border-color:var(--accent);
}
.faq-item.open .faq-q{color:var(--accent)}
.faq-answer{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .35s ease;
}
.faq-item.open .faq-answer{grid-template-rows:1fr}
.faq-answer-inner{overflow:hidden;min-height:0}
.faq-answer p{
  color:var(--text-2);
  line-height:1.85;
  font-size:15px;
  padding:0 50px 22px 2px;
  max-width:760px;
}
/* ========= CTA / 表单 ========= */
.cta-section{
  padding:90px 0 92px;
  background:var(--bg-0);
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;
  width:720px;height:720px;
  background:radial-gradient(circle,rgba(45,225,166,.1),transparent 62%);
  top:30%;
  left:50%;
  transform:translate(-50%,-50%);
  pointer-events:none;
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr 1.05fr;
  gap:56px;
  align-items:center;
  position:relative;
}
.cta-title{
  font-size:29px;
  line-height:1.35;
  margin:8px 0 16px;
}
.cta-title em{color:var(--accent);font-style:normal}
.cta-text{color:var(--text-2);font-size:15px}
.highlight-list{display:grid;grid-template-columns:1fr;gap:11px;margin-top:24px}
.highlight-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:var(--text-2);
  font-size:14px;
}
.highlight-list i{color:var(--accent);margin-top:5px}
.contact-form-card{
  background:linear-gradient(150deg,rgba(45,225,166,.04),transparent 30%),var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--radius-xl);
  padding:30px 30px 28px;
  box-shadow:var(--shadow-card);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group{margin-bottom:15px}
.form-msg{display:none}
.form-toast{
  display:none;
  align-items:center;
  gap:9px;
  padding:11px 14px;
  background:rgba(45,225,166,.1);
  border:1px solid rgba(45,225,166,.28);
  color:var(--accent);
  border-radius:9px;
  font-size:14px;
  margin-bottom:16px;
}
.form-toast.show{display:flex}
.privacy-note{
  font-size:12px;
  color:var(--text-3);
  margin-top:10px;
  display:inline-flex;
  gap:6px;
}
.privacy-note i{color:var(--gold)}
/* ========= 页脚 ========= */
.site-footer{
  background:linear-gradient(180deg,#070B09,#0A0D0C);
  border-top:1px solid var(--line-1);
}
.site-footer .container{padding-top:62px;padding-bottom:30px}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .75fr .8fr;
  gap:44px;
  padding-bottom:34px;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.footer-brand .brand{margin:0 0 18px}
.footer-desc{
  color:var(--text-3);
  font-size:14px;
  line-height:1.85;
  max-width:380px;
  margin-top:14px;
}
.footer-col h4{
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  margin-bottom:18px;
}
.footer-col ul li{
  color:var(--text-3);
  font-size:14px;
  padding:6px 0;
  line-height:1.6;
}
.footer-col a{color:var(--text-2)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
  padding-top:26px;
  color:var(--text-3);
  font-size:13px;
}
.tech-domain{font-family:var(--font-mono)}
/* ========= 响应式 ========= */
@media (max-width:1150px){
  .hero-copy h1{font-size:38px}
  .hero-grid{gap:32px}
}
@media (max-width:991px){
  .section{padding:66px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:30px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-copy h1 .brand-block{font-size:19px}
  .terminal-card{max-width:560px}
  .compare-wrap{grid-template-columns:1fr}
  .compare-viz{margin-top:18px}
  .steps-wrap{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr}
  .contact-form-card{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:32px}
  .site-nav{
    position:absolute;
    top:72px;left:0;right:0;
    background:rgba(8,11,10,.98);
    backdrop-filter:blur(20px);
    display:none;
    flex-direction:column;
    align-items:stretch;
    padding:0 22px 16px;
    border-bottom:1px solid var(--line-1);
    box-shadow:0 28px 40px rgba(0,0,0,.34);
  }
  .site-nav.open{display:flex}
  .nav-link,.nav-link.active{height:auto;padding:13px 4px;justify-content:flex-start}
  .nav-link.active::after{display:none}
  .nav-toggle{display:inline-flex}
  .cap-card:nth-child(n){grid-column:span 3}
  .cap-card:nth-child(6){grid-column:span 6}
}
@media (max-width:767px){
  body{font-size:15px}
  .container,.container-lg{width:calc(100% - 36px)}
  .topbar-inner{height:34px}
  .topbar-links{gap:10px}
  .topbar-links .online-text:last-of-type{display:none}
  .site-nav{max-height:calc(100vh - 110px);overflow-y:auto}
  .brand-name{font-size:15px;white-space:normal}
  .brand{margin-right:6px}
  .hero-copy h1{font-size:31px}
  .hero-actions .btn{flex:1}
  .section-kicker{margin-bottom:10px}
  .section-head h2{font-size:25px}
  .cap-grid{grid-template-columns:1fr}
  .cap-card:nth-child(n){grid-column:auto}
  .cap-card:nth-child(6){flex-direction:column;align-items:flex-start}
  .cap-card:nth-child(6) .cap-icon{margin:0 0 18px}
  .scene-grid{grid-template-columns:1fr}
  .scene-card:nth-child(n){grid-column:auto}
  .steps-wrap{grid-template-columns:1fr;gap:13px}
  .scene-content p{font-size:14px}
  .cta-grid{gap:28px}
  .cta-section{padding:60px 0}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:20px;padding-bottom:26px}
  .footer-bottom{flex-direction:column-reverse;align-items:flex-start;padding-top:20px}
  .compare-viz{padding:22px}
  .compare-row{grid-template-columns:72px 1fr 32px;gap:8px}
  .faq-answer p{padding:0 0 18px 0}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .scene-img img{transform:none!important}
}