:root {
  --kl-coral: #ff5a5f;
  --kl-coral-ink: #e3484d;
  --kl-coral-soft: #ffe7e5;
  --kl-coral-soft-2: #fff1ef;
  --kl-bg: #fff9f8;
  --kl-surface: #ffffff;
  --kl-surface-soft: #fff4f2;
  --kl-surface-ink: #fff0eb;
  --kl-text: #1f2430;
  --kl-text-soft: #596177;
  --kl-text-muted: #77809a;
  --kl-border: #f3d9d7;
  --kl-radius-lg: 20px;
  --kl-radius-xl: 28px;
  --kl-radius-xxl: 36px;
  --kl-shadow-lg: 0 22px 62px rgba(31, 36, 48, 0.14);
  --kl-shadow-md: 0 12px 32px rgba(31, 36, 48, 0.11);
  --kl-shadow-sm: 0 8px 22px rgba(31, 36, 48, 0.09);
  --kl-max: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Avenir Next", "Montserrat", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--kl-text);
  background:
    radial-gradient(1300px 650px at -8% -22%, #ffe3dd 0%, rgba(255, 227, 221, 0) 60%),
    radial-gradient(1200px 560px at 105% -10%, #ffece2 0%, rgba(255, 236, 226, 0) 58%),
    var(--kl-bg);
  line-height: 1.68;
}

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

img,
svg {
  display: block;
}

.kl-page {
  min-height: 100vh;
}

.kl-container {
  width: min(100% - 48px, var(--kl-max));
  margin: 0 auto;
}

.kl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.kl-btn:hover {
  transform: translateY(-1px);
}

.kl-btn-primary {
  background: var(--kl-coral);
  color: #fff;
  box-shadow: 0 14px 30px rgba(255, 90, 95, 0.34);
}

.kl-btn-primary:hover {
  background: var(--kl-coral-ink);
  box-shadow: 0 18px 36px rgba(255, 90, 95, 0.41);
}

.kl-btn-soft {
  background: #fff;
  color: var(--kl-coral-ink);
  box-shadow: 0 10px 24px rgba(255, 90, 95, 0.2);
}

.kl-btn-ghost {
  background: transparent;
  color: var(--kl-text);
  border: 1px solid var(--kl-border);
}

.kl-header {
  position: sticky;
  top: 0;
  z-index: 25;
  background: rgba(255, 249, 248, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #f8dfde;
}

.kl-header-inner {
  width: min(100% - 48px, var(--kl-max));
  margin: 0 auto;
  min-height: 84px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.kl-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 25px;
  font-weight: 900;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.kl-logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff7b79 0%, #ff5a5f 100%);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.kl-nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--kl-border);
  background: #fff;
  color: var(--kl-text);
  align-items: center;
  justify-content: center;
}

.kl-header-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.kl-main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.kl-main-nav a {
  border-radius: 999px;
  padding: 9px 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--kl-text-soft);
}

.kl-main-nav a:hover {
  background: #fff;
  color: var(--kl-text);
}

.kl-main-nav a.kl-nav-active {
  background: var(--kl-coral-soft);
  color: var(--kl-coral-ink);
}

.kl-main {
  padding-top: 34px;
}

.kl-hero-section {
  width: min(100% - 48px, var(--kl-max));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.kl-hero-copy {
  background: var(--kl-surface);
  border: 1px solid #f8dedc;
  border-radius: var(--kl-radius-xxl);
  padding: clamp(30px, 4vw, 56px);
  box-shadow: var(--kl-shadow-lg);
}

.kl-kicker {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--kl-coral-soft);
  color: var(--kl-coral-ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.kl-hero-title {
  margin: 14px 0 14px;
  font-size: clamp(38px, 5.9vw, 68px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.kl-hero-sub {
  margin: 0;
  max-width: 22em;
  font-size: clamp(17px, 2.3vw, 22px);
  color: var(--kl-text-soft);
}

.kl-hero-actions {
  margin-top: 28px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.kl-hero-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--kl-text-muted);
}

.kl-connect-showcase {
  border-radius: var(--kl-radius-xxl);
  background: linear-gradient(168deg, #ffe6df 0%, #ffd9d8 56%, #ffeede 100%);
  border: 1px solid #fed2d0;
  box-shadow: var(--kl-shadow-lg);
  display: grid;
  place-items: center;
  min-height: 460px;
  padding: clamp(20px, 4vw, 44px);
}

.kl-connect-wrap {
  width: min(96%, 430px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 24%, #ff8d8a 0%, #ff5a5f 52%, #f7484e 100%);
  box-shadow:
    0 26px 54px rgba(255, 90, 95, 0.43),
    inset 0 0 0 12px rgba(255, 255, 255, 0.2);
  display: grid;
  place-items: center;
}

.kl-connect-button {
  width: 64%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 0;
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 900;
  letter-spacing: 0.03em;
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.46);
  pointer-events: none;
}

.kl-platforms {
  width: min(100% - 48px, var(--kl-max));
  margin: 72px auto 0;
}

.kl-section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 10px;
  flex-wrap: wrap;
}

.kl-section-title {
  margin: 0;
  font-size: clamp(26px, 3.7vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.kl-section-sub {
  margin: 0;
  color: var(--kl-text-soft);
  font-size: 17px;
}

.kl-platform-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.kl-platform-card {
  display: flex;
  align-items: center;
  gap: 12px;
  border-radius: var(--kl-radius-lg);
  border: 1px solid var(--kl-border);
  background: var(--kl-surface);
  padding: 18px 15px;
  box-shadow: var(--kl-shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.kl-platform-card:hover {
  transform: translateY(-3px);
  border-color: #f4b4b1;
  box-shadow: 0 16px 30px rgba(31, 36, 48, 0.14);
}

.kl-platform-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--kl-surface-soft);
  color: var(--kl-coral-ink);
  display: grid;
  place-items: center;
  flex: 0 0 auto;
}

.kl-platform-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.kl-platform-name {
  display: block;
  font-size: 16px;
  font-weight: 800;
}

.kl-platform-tip {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--kl-text-soft);
}

.kl-highlight-strip {
  width: min(100% - 48px, var(--kl-max));
  margin: 28px auto 0;
  border-radius: var(--kl-radius-xl);
  background: #fff;
  border: 1px solid var(--kl-border);
  box-shadow: var(--kl-shadow-sm);
  padding: 18px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.kl-highlight-item {
  border-radius: 18px;
  background: var(--kl-surface-soft);
  padding: 16px;
}

.kl-highlight-num {
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.kl-highlight-label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--kl-text-soft);
}

.kl-home-block {
  width: min(100% - 48px, var(--kl-max));
  margin: 68px auto 0;
}

.kl-feature-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.kl-feature-card {
  border-radius: var(--kl-radius-xl);
  background: #fff;
  border: 1px solid var(--kl-border);
  box-shadow: var(--kl-shadow-sm);
  padding: 22px;
}

.kl-feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: var(--kl-coral-soft);
  color: var(--kl-coral-ink);
  display: grid;
  place-items: center;
}

.kl-feature-icon svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.kl-feature-title {
  margin: 14px 0 8px;
  font-size: 21px;
  line-height: 1.2;
  font-weight: 900;
}

.kl-feature-desc {
  margin: 0;
  color: var(--kl-text-soft);
  font-size: 15px;
}

.kl-adv-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.kl-adv-card {
  border-radius: var(--kl-radius-xl);
  background: linear-gradient(140deg, #fff2ef 0%, #fff 100%);
  border: 1px solid var(--kl-border);
  box-shadow: var(--kl-shadow-sm);
  padding: 22px;
}

.kl-adv-title {
  margin: 0;
  font-size: 22px;
  line-height: 1.15;
  font-weight: 900;
}

.kl-adv-desc {
  margin: 10px 0 0;
  color: var(--kl-text-soft);
  font-size: 15px;
}

.kl-scene-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.kl-scene-card {
  border-radius: var(--kl-radius-xl);
  background: #fff;
  border: 1px solid var(--kl-border);
  box-shadow: var(--kl-shadow-sm);
  padding: 20px;
}

.kl-scene-tag {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--kl-coral-soft);
  color: var(--kl-coral-ink);
  font-size: 12px;
  font-weight: 800;
}

.kl-scene-title {
  margin: 12px 0 8px;
  font-size: 20px;
  line-height: 1.3;
  font-weight: 900;
}

.kl-scene-desc {
  margin: 0;
  color: var(--kl-text-soft);
  font-size: 15px;
}

.kl-article-preview-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.kl-article-preview-card {
  border-radius: var(--kl-radius-xl);
  background: #fff;
  border: 1px solid var(--kl-border);
  box-shadow: var(--kl-shadow-sm);
  padding: 20px;
}

.kl-article-preview-card h3 {
  margin: 12px 0 9px;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 900;
}

.kl-article-preview-card p {
  margin: 0;
  color: var(--kl-text-soft);
  font-size: 15px;
}

.kl-article-preview-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--kl-coral-ink);
  font-weight: 800;
}

.kl-home-cta {
  width: min(100% - 48px, var(--kl-max));
  margin: 72px auto 0;
  border-radius: 34px;
  background: linear-gradient(145deg, #ff6f73 0%, #ff5a5f 54%, #f24f55 100%);
  box-shadow: var(--kl-shadow-lg);
  padding: clamp(26px, 5vw, 46px);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.kl-home-cta-title {
  margin: 0;
  font-size: clamp(26px, 3.9vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.kl-home-cta-sub {
  margin-top: 8px;
  font-size: 15px;
  opacity: 0.96;
}

.kl-list-hero {
  width: min(100% - 48px, var(--kl-max));
  margin: 0 auto;
  background: #fff;
  border: 1px solid #f8dfde;
  border-radius: var(--kl-radius-xxl);
  box-shadow: var(--kl-shadow-lg);
  padding: clamp(30px, 5vw, 58px);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.kl-list-hero > * {
  position: relative;
  z-index: 2;
}

.kl-list-hero::before,
.kl-list-hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
  z-index: 1;
}

.kl-list-kicker {
  display: inline-flex;
  border-radius: 999px;
  background: var(--kl-coral-soft);
  color: var(--kl-coral-ink);
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.kl-list-title {
  margin: 14px 0 12px;
  font-size: clamp(30px, 4.8vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 900;
  max-width: 18em;
}

.kl-list-sub {
  margin: 0;
  max-width: 42em;
  color: var(--kl-text-soft);
  font-size: 17px;
}

.kl-list-count {
  margin-top: 18px;
  color: var(--kl-text-muted);
  font-size: 14px;
}

.kl-list-grid {
  width: min(100% - 48px, var(--kl-max));
  margin: 30px auto 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.kl-list-card {
  border-radius: var(--kl-radius-xl);
  background: #fff;
  border: 1px solid var(--kl-border);
  box-shadow: var(--kl-shadow-sm);
  padding: 22px;
  min-height: 278px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.kl-list-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 38px rgba(31, 36, 48, 0.16);
}

.kl-list-card h2 {
  margin: 12px 0 9px;
  font-size: clamp(21px, 2.1vw, 26px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  font-weight: 900;
}

.kl-list-card h2 a:hover {
  color: var(--kl-coral-ink);
}

.kl-list-card p {
  margin: 0;
  color: var(--kl-text-soft);
  font-size: 15px;
}

.kl-list-meta {
  margin-top: 12px;
  color: var(--kl-text-muted);
  font-size: 12px;
}

.kl-list-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--kl-coral-ink);
  font-weight: 800;
}

.kl-article-layout {
  width: min(100% - 48px, var(--kl-max));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 18px;
  align-items: start;
}

.kl-article-wrap {
  background: #fff;
  border: 1px solid #f8dfde;
  border-radius: var(--kl-radius-xl);
  box-shadow: var(--kl-shadow-lg);
  padding: clamp(28px, 5vw, 60px);
}

.kl-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--kl-text-muted);
}

.kl-breadcrumb a {
  color: var(--kl-coral-ink);
  font-weight: 700;
}

.kl-article-title {
  margin: 16px 0 0;
  font-size: clamp(30px, 4.3vw, 50px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.kl-article-meta {
  margin-top: 10px;
  color: var(--kl-text-muted);
  font-size: 14px;
}

.kl-reading {
  margin-top: 24px;
}

.kl-reading p {
  margin: 0 0 22px;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.88;
  color: #2b3040;
}

.kl-reading h2 {
  margin: 44px 0 18px;
  font-size: clamp(26px, 3.5vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.kl-reading h3 {
  margin: 28px 0 12px;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.2;
  font-weight: 800;
}

.kl-reading ul,
.kl-reading ol {
  margin: 0 0 24px 22px;
  padding: 0;
}

.kl-reading li {
  margin: 0 0 12px;
  font-size: clamp(17px, 2vw, 20px);
  color: #2b3040;
}

.kl-inline-cta {
  margin: 30px 0 36px;
  border-radius: 26px;
  background: linear-gradient(145deg, #ff6a6f 0%, #ff5a5f 100%);
  color: #fff;
  padding: clamp(20px, 4vw, 34px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.kl-inline-cta-title {
  margin: 0;
  font-size: clamp(22px, 2.5vw, 30px);
  line-height: 1.2;
  font-weight: 900;
}

.kl-inline-cta-note {
  margin-top: 8px;
  font-size: 15px;
  opacity: 0.95;
}

.kl-article-side {
  background: #fff;
  border: 1px solid var(--kl-border);
  border-radius: var(--kl-radius-xl);
  box-shadow: var(--kl-shadow-sm);
  padding: 22px;
  position: sticky;
  top: 102px;
}

.kl-side-title {
  margin: 0;
  font-size: 22px;
  line-height: 1.2;
  font-weight: 900;
}

.kl-side-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.kl-side-list li + li {
  margin-top: 10px;
  border-top: 1px dashed #f0d4d2;
  padding-top: 10px;
}

.kl-side-list a {
  color: var(--kl-text-soft);
  font-size: 14px;
  line-height: 1.5;
}

.kl-side-list a:hover {
  color: var(--kl-coral-ink);
}

.kl-legal-wrap {
  width: min(100% - 48px, 980px);
  margin: 0 auto;
  background: #fff;
  border: 1px solid #f8dfde;
  border-radius: var(--kl-radius-xl);
  box-shadow: var(--kl-shadow-lg);
  padding: clamp(28px, 5vw, 58px);
}

.kl-legal-wrap h1 {
  margin: 0;
  font-size: clamp(30px, 4.2vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.kl-legal-meta {
  margin-top: 10px;
  color: var(--kl-text-muted);
  font-size: 14px;
}

.kl-legal-wrap h2 {
  margin: 34px 0 12px;
  font-size: clamp(22px, 2.7vw, 30px);
  line-height: 1.2;
  font-weight: 900;
}

body[data-kl-page="scenarios"] .kl-list-hero {
  background:
    radial-gradient(560px 300px at 92% -10%, rgba(255, 120, 115, 0.26) 0%, rgba(255, 120, 115, 0) 72%),
    radial-gradient(460px 240px at -12% 114%, rgba(255, 174, 130, 0.24) 0%, rgba(255, 174, 130, 0) 72%),
    linear-gradient(145deg, #fff7f2 0%, #ffffff 64%);
  border-color: #f4d5cb;
}

body[data-kl-page="scenarios"] .kl-list-hero::before {
  right: 26px;
  top: 24px;
  width: 198px;
  height: 198px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 32%, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.15) 58%, rgba(255, 122, 112, 0.28) 100%);
}

body[data-kl-page="scenarios"] .kl-list-hero::after {
  display: none;
}

body[data-kl-page="knowledge"] .kl-list-hero {
  background:
    linear-gradient(160deg, #f4f9ff 0%, #ffffff 46%, #f8fbff 100%);
  border-color: #d8e5f5;
}

body[data-kl-page="knowledge"] .kl-list-hero::before {
  right: 24px;
  top: 18px;
  width: 272px;
  height: 182px;
  border-radius: 24px;
  background:
    linear-gradient(rgba(114, 147, 200, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(114, 147, 200, 0.18) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.52;
}

body[data-kl-page="knowledge"] .kl-list-hero::after {
  display: none;
}

body[data-kl-page="support"] .kl-list-hero {
  background:
    radial-gradient(520px 230px at 102% -8%, rgba(98, 186, 155, 0.24) 0%, rgba(98, 186, 155, 0) 70%),
    linear-gradient(150deg, #f4fbf7 0%, #ffffff 62%);
  border-color: #cde7d8;
}

body[data-kl-page="support"] .kl-list-hero::before {
  left: -28px;
  top: -28px;
  width: 196px;
  height: 196px;
  border-radius: 44% 56% 58% 42% / 43% 40% 60% 57%;
  background: linear-gradient(140deg, rgba(104, 194, 165, 0.34), rgba(69, 148, 120, 0.08));
}

body[data-kl-page="support"] .kl-list-hero::after {
  display: none;
}

body[data-kl-page="scenarios"] .kl-list-kicker {
  background: #ffe8df;
  color: #db4e51;
}

body[data-kl-page="knowledge"] .kl-list-kicker {
  background: #e7f0ff;
  color: #3f6ca8;
}

body[data-kl-page="support"] .kl-list-kicker {
  background: #e2f3ea;
  color: #2f7a62;
}

.kl-legal-wrap p,
.kl-legal-wrap li {
  font-size: 17px;
  color: #2b3040;
  line-height: 1.88;
}

.kl-register-wrap {
  width: min(100% - 48px, var(--kl-max));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
}

.kl-register-main,
.kl-register-side {
  border-radius: var(--kl-radius-xl);
  background: #fff;
  border: 1px solid #f8dfde;
  box-shadow: var(--kl-shadow-lg);
  padding: clamp(24px, 4vw, 40px);
}

.kl-register-main h1 {
  margin: 0;
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.kl-register-main p {
  margin: 12px 0 0;
  color: var(--kl-text-soft);
  font-size: 17px;
}

.kl-register-steps {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.kl-register-step {
  border-radius: 20px;
  border: 1px solid var(--kl-border);
  background: var(--kl-surface-soft);
  padding: 16px;
}

.kl-register-step strong {
  display: block;
  font-size: 17px;
}

.kl-register-step span {
  display: block;
  margin-top: 6px;
  color: var(--kl-text-soft);
  font-size: 14px;
}

.kl-register-side h2 {
  margin: 0;
  font-size: 28px;
  line-height: 1.2;
  font-weight: 900;
}

.kl-register-side ul {
  margin: 14px 0 0 20px;
  padding: 0;
}

.kl-register-side li {
  margin: 0 0 9px;
  color: #2b3040;
  font-size: 15px;
}

.kl-footer {
  margin-top: 72px;
  padding-bottom: 34px;
}

.kl-footer-inner {
  width: min(100% - 48px, var(--kl-max));
  margin: 0 auto;
}

.kl-footer-cta {
  border-radius: 32px;
  background: linear-gradient(130deg, #ffe4dd 0%, #ffd8d7 48%, #ffe8d5 100%);
  border: 1px solid #f8c7c4;
  box-shadow: var(--kl-shadow-md);
  padding: clamp(20px, 4vw, 34px);
  text-align: center;
}

.kl-footer-cta-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.kl-footer-cta-title {
  margin: 0;
  font-size: clamp(24px, 4vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.kl-footer-links {
  margin-top: 26px;
  text-align: center;
}

.kl-footer-link-row {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--kl-text-soft);
  font-size: 15px;
}

.kl-footer-link-row a:hover {
  color: var(--kl-text);
}

.kl-footer-meta {
  margin-top: 14px;
  color: #707789;
  font-size: 14px;
}

/* download.html compatibility layer */
.site-header,
.site-footer,
.section,
.container {
  font-family: "Avenir Next", "Montserrat", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.section {
  padding-top: 34px;
}

.container {
  width: min(100% - 48px, var(--kl-max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 24;
  background: rgba(255, 249, 248, 0.92);
  border-bottom: 1px solid #f8dfde;
  backdrop-filter: blur(7px);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 900;
}

.brand svg {
  width: 38px;
  height: 38px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--kl-text-soft);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a:hover {
  color: var(--kl-text);
  background: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 800;
}

.btn-primary {
  background: var(--kl-coral);
  color: #fff;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--kl-border);
  background: #fff;
}

.page-hero {
  border-radius: var(--kl-radius-xl);
  background: #fff;
  border: 1px solid var(--kl-border);
  box-shadow: var(--kl-shadow-sm);
  padding: 28px;
}

.page-hero h1 {
  margin: 0;
  font-size: clamp(30px, 4.8vw, 52px);
  line-height: 1.08;
  font-weight: 900;
}

.page-hero p {
  margin-top: 10px;
  color: var(--kl-text-soft);
}

.platform-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.platform-card {
  border-radius: 20px;
  border: 1px solid var(--kl-border);
  background: #fff;
  box-shadow: var(--kl-shadow-sm);
  padding: 16px;
}

.platform-card h3 {
  margin: 0;
  font-size: 20px;
}

.platform-card p {
  margin: 7px 0 0;
  color: var(--kl-text-soft);
  font-size: 14px;
}

.platform-card a {
  display: inline-flex;
  margin-top: 11px;
  color: var(--kl-coral-ink);
  font-weight: 800;
}

.site-footer {
  margin-top: 60px;
  padding: 26px 0 30px;
}

.footer-grid {
  border-radius: 24px;
  background: #fff;
  border: 1px solid var(--kl-border);
  padding: 22px;
  box-shadow: var(--kl-shadow-sm);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.footer-grid h3 {
  margin: 0;
  font-size: 19px;
}

.footer-grid p,
.footer-links,
.footer-links li {
  color: var(--kl-text-soft);
  font-size: 14px;
}

.footer-links {
  margin: 10px 0 0;
  padding-left: 18px;
}

.footer-bottom {
  text-align: center;
  margin-top: 12px;
  color: var(--kl-text-muted);
  font-size: 13px;
}

@media (max-width: 1080px) {
  .kl-hero-section,
  .kl-register-wrap,
  .kl-article-layout {
    grid-template-columns: 1fr;
  }

  .kl-highlight-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .kl-feature-grid,
  .kl-scene-grid,
  .kl-article-preview-grid,
  .kl-list-grid,
  .platform-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .kl-platform-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .kl-article-side {
    position: static;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .kl-header-inner,
  .kl-container,
  .kl-hero-section,
  .kl-platforms,
  .kl-highlight-strip,
  .kl-home-block,
  .kl-home-cta,
  .kl-list-hero,
  .kl-list-grid,
  .kl-footer-inner,
  .kl-article-layout,
  .kl-legal-wrap,
  .kl-register-wrap,
  .container {
    width: min(100% - 28px, var(--kl-max));
  }

  .kl-header-inner {
    min-height: 74px;
  }

  .kl-logo {
    font-size: 21px;
  }

  .kl-nav-toggle {
    display: inline-flex;
  }

  .kl-header-right {
    position: fixed;
    left: 14px;
    right: 14px;
    top: 78px;
    z-index: 26;
    background: #fff;
    border-radius: 24px;
    border: 1px solid var(--kl-border);
    box-shadow: var(--kl-shadow-md);
    padding: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .kl-header-right.kl-nav-open {
    display: flex;
  }

  .kl-main-nav {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .kl-main-nav a {
    width: 100%;
    padding: 12px 14px;
    background: var(--kl-surface-soft);
    color: var(--kl-text);
  }

  .kl-main-nav a.kl-nav-active {
    background: var(--kl-coral-soft);
  }

  .kl-header-right .kl-btn {
    width: 100%;
  }

  .kl-hero-copy,
  .kl-connect-showcase,
  .kl-list-hero,
  .kl-article-wrap,
  .kl-legal-wrap,
  .kl-register-main,
  .kl-register-side {
    padding: 24px;
  }

  .kl-platform-grid,
  .kl-highlight-strip,
  .kl-feature-grid,
  .kl-adv-grid,
  .kl-scene-grid,
  .kl-article-preview-grid,
  .kl-list-grid,
  .platform-grid {
    grid-template-columns: 1fr;
  }

  .kl-list-card h2 {
    font-size: 23px;
  }

  .kl-list-hero::before,
  .kl-list-hero::after {
    display: none;
  }

  .site-nav {
    position: fixed;
    top: 78px;
    right: 14px;
    left: 14px;
    background: #fff;
    border: 1px solid var(--kl-border);
    border-radius: 20px;
    box-shadow: var(--kl-shadow-md);
    padding: 10px;
    display: none;
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav.nav-open {
    display: flex;
  }

  .site-nav a,
  .site-nav .btn {
    width: 100%;
    text-align: center;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}