:root {
  color-scheme: light;
  --page: #f4f9ff;
  --page-deep: #eaf4ff;
  --surface: rgba(251, 253, 255, 0.72);
  --surface-strong: rgba(248, 252, 255, 0.92);
  --surface-soft: rgba(230, 242, 255, 0.6);
  --ink: #09244b;
  --ink-soft: #47617f;
  --ink-faint: #7188a3;
  --accent: #0866d8;
  --accent-deep: #0752b4;
  --accent-soft: #d8eaff;
  --line: rgba(95, 151, 216, 0.34);
  --line-strong: rgba(77, 139, 212, 0.56);
  --shadow: 0 28px 80px rgba(47, 105, 167, 0.13);
  --shadow-soft: 0 18px 50px rgba(47, 105, 167, 0.09);
  --radius-panel: 24px;
  --radius-control: 12px;
  --header-height: 76px;
  --shell: 1240px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 8%, rgba(179, 215, 255, 0.5), transparent 30%),
    linear-gradient(180deg, #f9fcff 0%, var(--page) 36%, var(--page-deep) 100%);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(81, 142, 210, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(81, 142, 210, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  content: "";
  pointer-events: none;
}

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

abbr[title] {
  border-bottom: 0;
  cursor: help;
  text-decoration: none;
}

button,
summary,
a {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(8, 102, 216, 0.3);
  outline-offset: 4px;
}

h1,
h2,
h3,
p,
figure,
ol {
  margin-top: 0;
}

h1,
h2,
h3 {
  letter-spacing: -0.035em;
}

.shell {
  width: min(calc(100% - 48px), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  color: #fdfefe;
  background: var(--accent-deep);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-height);
  border-bottom: 1px solid rgba(94, 150, 214, 0.2);
  background: rgba(248, 252, 255, 0.78);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 100%;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 13px;
  font-weight: 700;
}

.brand-mark {
  position: relative;
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(145deg, #2f8bea, #075bc4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.46), 0 8px 18px rgba(7, 91, 196, 0.18);
  transform: rotate(30deg);
}

.brand-mark::before,
.brand-mark::after,
.brand-mark span {
  position: absolute;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: rgba(238, 248, 255, 0.96);
  content: "";
}

.brand-mark::before {
  transform: translate(-5px, -3px);
}

.brand-mark::after {
  transform: translate(5px, -3px);
}

.brand-mark span {
  transform: translateY(6px);
}

.brand-name {
  font-size: 20px;
  letter-spacing: -0.03em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(28px, 4vw, 54px);
  color: #304967;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
}

.desktop-nav a,
.site-footer nav a,
.mobile-nav__panel a,
.text-link {
  transition: color 180ms ease;
}

.desktop-nav a:hover,
.site-footer nav a:hover,
.mobile-nav__panel a:hover,
.text-link:hover {
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0) scale(0.98);
}

.button--login,
.button--primary {
  color: #fdfefe;
  background: var(--accent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28), 0 12px 28px rgba(8, 102, 216, 0.2);
}

.button--login:hover,
.button--primary:hover {
  background: var(--accent-deep);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28), 0 16px 34px rgba(8, 82, 180, 0.24);
}

.button--login {
  min-height: 44px;
  padding-inline: 20px;
}

.mobile-nav {
  position: relative;
  display: none;
}

.mobile-nav summary {
  display: grid;
  width: 44px;
  height: 44px;
  cursor: pointer;
  list-style: none;
  place-content: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: rgba(251, 253, 255, 0.75);
}

.mobile-nav summary::-webkit-details-marker {
  display: none;
}

.mobile-nav summary span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
}

.mobile-nav__panel {
  position: absolute;
  top: 54px;
  right: 0;
  display: grid;
  width: 190px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(248, 252, 255, 0.96);
  box-shadow: var(--shadow-soft);
}

.mobile-nav__panel a {
  min-height: 44px;
  padding: 10px 12px;
  border-radius: 9px;
  color: #304967;
}

.mobile-nav__panel a:hover {
  background: var(--accent-soft);
}

.hero {
  position: relative;
  display: grid;
  min-height: calc(100dvh - var(--header-height));
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  align-items: center;
  gap: clamp(44px, 5vw, 72px);
  padding-block: clamp(56px, 6vw, 92px);
}

.hero::before {
  position: absolute;
  top: 10%;
  right: 14%;
  z-index: -1;
  width: 34vw;
  max-width: 520px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(177, 214, 255, 0.28);
  filter: blur(80px);
  content: "";
  pointer-events: none;
}

.hero-copy {
  padding-bottom: 24px;
}

.hero h1 {
  max-width: none;
  margin-bottom: 28px;
  font-size: clamp(46px, 4.05vw, 60px);
  font-weight: 750;
  line-height: 1.14;
}

.hero-copy > p {
  max-width: 33em;
  margin-bottom: 34px;
  color: var(--ink-soft);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
}

.hero-actions .button {
  min-width: 136px;
}

.text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  color: var(--accent-deep);
  font-weight: 700;
  white-space: nowrap;
}

.text-link span {
  font-size: 20px;
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.product-figure {
  min-width: 0;
  margin-bottom: 0;
}

.product-visual {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: clamp(10px, 1.4vw, 16px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.56), rgba(221, 238, 255, 0.36)),
    rgba(226, 240, 255, 0.46);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.82),
    inset 0 -1px 0 rgba(102, 159, 224, 0.14),
    var(--shadow);
  backdrop-filter: blur(28px) saturate(135%);
  -webkit-backdrop-filter: blur(28px) saturate(135%);
}

.product-visual__image {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 510 / 528;
  border-radius: calc(var(--radius-panel) - 8px);
  object-fit: contain;
}

.product-figure figcaption {
  margin-top: 14px;
  color: var(--ink-faint);
  font-size: 13px;
  text-align: center;
}

.section {
  padding-block: clamp(76px, 7.5vw, 108px);
}

.section-heading {
  max-width: 810px;
  margin-bottom: clamp(48px, 6vw, 76px);
}

.section-heading--compact {
  max-width: 740px;
}

.section-heading h2,
.closing-panel h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 4.2vw, 56px);
  font-weight: 740;
  line-height: 1.18;
}

.section-heading p,
.closing-panel p {
  max-width: 44em;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: clamp(16px, 1.35vw, 19px);
}

.purpose {
  position: relative;
}

.purpose::before {
  position: absolute;
  inset: 3% 0 0;
  z-index: -1;
  border-block: 1px solid rgba(87, 144, 210, 0.12);
  background: rgba(243, 249, 255, 0.5);
  content: "";
}

.purpose-steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  padding: 0;
  margin-bottom: 54px;
  list-style: none;
}

.purpose-steps::before {
  position: absolute;
  top: 25px;
  right: 16.66%;
  left: 16.66%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 12%, var(--line-strong) 88%, transparent);
  content: "";
}

.purpose-steps li {
  position: relative;
  z-index: 1;
  padding-inline: clamp(20px, 3.5vw, 48px);
  text-align: center;
}

.purpose-steps li + li {
  border-left: 1px solid rgba(84, 143, 211, 0.2);
}

.step-number {
  display: inline-grid;
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent);
  background: var(--surface-strong);
  box-shadow: 0 10px 24px rgba(48, 112, 184, 0.1);
  font-size: 13px;
  font-weight: 700;
}

.purpose-steps h3,
.deployment-flow h3,
.security-list h3 {
  margin-bottom: 8px;
  font-size: clamp(19px, 1.7vw, 24px);
  line-height: 1.3;
}

.purpose-steps p,
.deployment-flow p,
.security-list p {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.75;
}

.conversation-flow {
  position: relative;
  overflow: hidden;
  margin-bottom: 0;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  background:
    radial-gradient(circle at 50% 50%, rgba(118, 183, 251, 0.16), transparent 31%),
    linear-gradient(120deg, rgba(255, 255, 255, 0.82), rgba(225, 241, 255, 0.56));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), var(--shadow-soft);
}

.conversation-flow::before {
  position: absolute;
  inset: 0;
  opacity: 0.48;
  background-image:
    linear-gradient(rgba(65, 136, 217, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(65, 136, 217, 0.07) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(90deg, transparent, #000 26%, #000 74%, transparent);
  content: "";
  pointer-events: none;
}

.conversation-flow figcaption {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 6px;
  margin-bottom: clamp(28px, 4vw, 42px);
}

.conversation-flow figcaption span,
.flow-label {
  color: var(--accent);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.conversation-flow figcaption strong {
  color: var(--ink);
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.35;
}

.conversation-flow__track {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(64px, 0.32fr) minmax(178px, 0.72fr) minmax(64px, 0.32fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
}

.signal-group {
  min-width: 0;
}

.flow-label {
  display: block;
  margin-bottom: 12px;
}

.signal-group--output {
  text-align: right;
}

.signal-chips {
  display: grid;
  gap: 8px;
}

.signal-chips span {
  position: relative;
  display: block;
  padding: 10px 14px;
  border: 1px solid rgba(81, 145, 218, 0.22);
  border-radius: 10px;
  color: var(--ink-soft);
  background: rgba(250, 253, 255, 0.72);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
  font-size: 13px;
  line-height: 1.4;
}

.signal-group--input .signal-chips span {
  padding-left: 24px;
}

.signal-group--input .signal-chips span::before {
  position: absolute;
  top: 50%;
  left: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(72, 145, 226, 0.1);
  content: "";
  transform: translateY(-50%);
}

.signal-group--output .signal-chips span {
  color: var(--accent-deep);
  background: rgba(231, 244, 255, 0.82);
}

.flow-link {
  position: relative;
  display: block;
  height: 1px;
  background: linear-gradient(90deg, rgba(73, 144, 222, 0.22), rgba(73, 144, 222, 0.78));
}

.flow-link::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(72, 145, 226, 0.1);
  content: "";
  transform: translateY(-50%);
}

.flow-link i {
  position: absolute;
  top: 50%;
  right: 0;
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  transform: translateY(-50%) rotate(45deg);
}

.flow-hub {
  position: relative;
  display: grid;
  min-height: 178px;
  place-items: center;
  align-content: center;
  gap: 8px;
  overflow: hidden;
  border: 1px solid rgba(72, 143, 222, 0.4);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(207, 231, 255, 0.82));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.96),
    0 22px 44px rgba(44, 108, 180, 0.17);
  text-align: center;
}

.flow-hub::before,
.flow-hub::after {
  position: absolute;
  border: 1px solid rgba(68, 139, 220, 0.16);
  border-radius: 50%;
  content: "";
}

.flow-hub::before {
  width: 190px;
  height: 190px;
}

.flow-hub::after {
  width: 132px;
  height: 132px;
}

.flow-hub__mark,
.flow-hub strong,
.flow-hub small {
  position: relative;
  z-index: 1;
}

.flow-hub__mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 15px;
  color: #fff;
  background: linear-gradient(145deg, #72b7f5, #377fc9);
  box-shadow: 0 12px 24px rgba(42, 112, 186, 0.24);
  font-size: 12px;
  font-weight: 750;
}

.flow-hub strong {
  color: var(--accent-deep);
  font-size: 18px;
}

.flow-hub small {
  color: var(--ink-faint);
  font-size: 11px;
  letter-spacing: 0.05em;
}

.architecture {
  position: relative;
}

.architecture::before {
  position: absolute;
  top: 20%;
  left: -8%;
  z-index: -1;
  width: 36vw;
  max-width: 540px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(157, 204, 255, 0.18);
  filter: blur(80px);
  content: "";
  pointer-events: none;
}

.architecture-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  padding: 0;
  margin-bottom: 0;
  list-style: none;
}

.architecture-card {
  min-height: 382px;
  padding: clamp(28px, 3.5vw, 42px);
}

.architecture-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}

.architecture-card__meta span {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(69, 139, 218, 0.4);
  border-radius: 14px;
  color: var(--accent-deep);
  background: rgba(248, 252, 255, 0.9);
  font-size: 12px;
  font-weight: 750;
}

.architecture-card__meta small,
.delivery-system__heading > span,
.management-value__intro > span {
  color: var(--accent);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.architecture-card h3 {
  margin-bottom: 14px;
  font-size: clamp(23px, 2.2vw, 30px);
  line-height: 1.3;
}

.architecture-card > p {
  margin-bottom: 24px;
  color: var(--ink-soft);
  line-height: 1.82;
}

.term-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  padding: 0;
  margin-bottom: 0;
  list-style: none;
}

.term-list li {
  padding: 8px 11px;
  border: 1px solid rgba(75, 142, 217, 0.22);
  border-radius: 9px;
  color: #355777;
  background: rgba(241, 248, 255, 0.72);
  font-size: 12px;
  line-height: 1.45;
}

.term-list abbr {
  color: var(--accent-deep);
  font-weight: 750;
}

.architecture-principles {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(0, 1.22fr);
  align-items: center;
  gap: clamp(34px, 6vw, 80px);
  margin-top: 26px;
  padding: clamp(30px, 4vw, 48px);
  border: 1px solid rgba(83, 145, 215, 0.26);
  border-radius: var(--radius-panel);
  background: linear-gradient(125deg, rgba(255, 255, 255, 0.74), rgba(222, 239, 255, 0.45));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.86), var(--shadow-soft);
}

.architecture-principles > div span {
  display: block;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.architecture-principles > div strong {
  display: block;
  max-width: 15em;
  font-size: clamp(23px, 2.5vw, 34px);
  line-height: 1.38;
}

.architecture-principles ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 26px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.architecture-principles li {
  min-height: 104px;
  padding: 20px 0;
  border-top: 1px solid rgba(71, 139, 217, 0.3);
}

.architecture-principles li b,
.architecture-principles li span {
  display: block;
}

.architecture-principles li b {
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 15px;
}

.architecture-principles li span {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.7;
}

.agent-value {
  position: relative;
  padding-top: clamp(92px, 9vw, 132px);
}

.agent-value::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  border-block: 1px solid rgba(87, 144, 210, 0.12);
  background:
    radial-gradient(circle at 82% 24%, rgba(122, 184, 248, 0.16), transparent 28%),
    rgba(247, 251, 255, 0.58);
  content: "";
}

.agent-value__intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  align-items: end;
  gap: clamp(44px, 8vw, 110px);
  margin-bottom: clamp(48px, 6vw, 76px);
}

.agent-value__intro .section-heading {
  margin-bottom: 0;
}

.agent-value__statement {
  max-width: 430px;
  padding: 6px 0 8px clamp(24px, 3vw, 38px);
  border-left: 1px solid var(--line-strong);
}

.agent-value__statement strong {
  display: block;
  margin-bottom: 14px;
  color: var(--accent-deep);
  font-size: clamp(20px, 2vw, 27px);
  line-height: 1.42;
}

.agent-value__statement p {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

.agent-capabilities {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 0 clamp(28px, 4vw, 56px);
  margin: 0;
}

.agent-capabilities > div {
  min-height: 190px;
  padding: clamp(24px, 3vw, 36px) clamp(8px, 1.5vw, 20px);
  border-top: 1px solid rgba(71, 139, 217, 0.36);
}

.agent-capabilities > div {
  grid-column: span 6;
}

.agent-capabilities dt {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 17px;
  color: var(--ink);
  font-size: clamp(20px, 1.8vw, 25px);
  font-weight: 730;
  letter-spacing: -0.025em;
}

.agent-capabilities dt span {
  color: var(--accent);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.agent-capabilities dd {
  max-width: 36em;
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

.scenarios {
  position: relative;
}

.scenarios::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  border-block: 1px solid rgba(87, 144, 210, 0.12);
  background:
    radial-gradient(circle at 12% 40%, rgba(135, 193, 252, 0.12), transparent 28%),
    rgba(246, 251, 255, 0.54);
  content: "";
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.scenario-card {
  display: flex;
  min-height: 374px;
  flex-direction: column;
  padding: clamp(26px, 3vw, 36px);
  border: 1px solid rgba(80, 145, 219, 0.25);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.76), rgba(230, 243, 255, 0.5));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.86), 0 18px 44px rgba(47, 105, 167, 0.07);
}

.scenario-card__index {
  margin-bottom: 34px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.scenario-card h3 {
  margin-bottom: 13px;
  font-size: clamp(21px, 1.8vw, 25px);
  line-height: 1.35;
}

.scenario-card > p {
  margin-bottom: 26px;
  color: var(--ink-soft);
  line-height: 1.78;
}

.scenario-card ul {
  padding: 0;
  margin: auto 0 0;
  list-style: none;
}

.scenario-card li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 10px;
  padding: 11px 0;
  border-top: 1px solid rgba(76, 142, 218, 0.22);
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.6;
}

.scenario-card li b {
  color: var(--accent-deep);
  font-size: 11px;
}

.management-value {
  display: grid;
  grid-template-columns: minmax(270px, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(36px, 6vw, 78px);
  margin-top: 26px;
  padding: clamp(34px, 5vw, 62px);
}

.management-value__intro h3 {
  max-width: 12em;
  margin: 16px 0 15px;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.28;
}

.management-value__intro p {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

.management-value dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
  margin: 0;
}

.management-value dl > div {
  min-height: 142px;
  padding: 23px 0;
  border-top: 1px solid rgba(70, 139, 218, 0.34);
}

.management-value dt {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 730;
}

.management-value dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.75;
}

.security {
  padding-top: clamp(88px, 8vw, 120px);
}

.glass-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.68), rgba(232, 244, 255, 0.46)),
    var(--surface);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.86),
    inset 0 -1px 0 rgba(88, 148, 218, 0.12),
    var(--shadow);
  backdrop-filter: blur(26px) saturate(135%);
  -webkit-backdrop-filter: blur(26px) saturate(135%);
}

.security-frame {
  display: grid;
  grid-template-columns: minmax(390px, 1.02fr) minmax(390px, 0.98fr);
  align-items: stretch;
  gap: clamp(36px, 6vw, 80px);
  overflow: hidden;
  padding: clamp(32px, 5vw, 70px);
}

.security-visual {
  position: relative;
  display: grid;
  min-height: 470px;
  place-items: center;
}

.security-visual::before {
  position: absolute;
  width: 82%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(134, 190, 252, 0.2);
  filter: blur(42px);
  content: "";
}

.security-boundary {
  position: relative;
  border: 1px solid rgba(70, 140, 220, 0.34);
  border-radius: 30px;
  background: rgba(246, 251, 255, 0.48);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.86),
    0 16px 32px rgba(44, 105, 174, 0.08);
}

.security-boundary--audit {
  position: absolute;
  width: min(100%, 440px);
  aspect-ratio: 1 / 1.02;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.72), rgba(211, 234, 255, 0.38));
}

.security-boundary--storage,
.security-boundary--transport,
.security-boundary--identity {
  position: absolute;
  inset: 56px 28px 24px;
}

.security-boundary--storage {
  border-color: rgba(65, 136, 216, 0.42);
  background: rgba(230, 243, 255, 0.54);
}

.security-boundary--transport {
  border-color: rgba(57, 127, 207, 0.5);
  background: rgba(217, 237, 255, 0.6);
}

.security-boundary--identity {
  border-color: rgba(49, 118, 198, 0.62);
  background: rgba(204, 230, 255, 0.66);
}

.boundary-label {
  position: absolute;
  top: 18px;
  left: 20px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.boundary-label b {
  margin-right: 7px;
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.security-core {
  position: absolute;
  top: 58%;
  left: 50%;
  display: grid;
  width: 124px;
  height: 82px;
  place-items: center;
  align-content: center;
  gap: 3px;
  border: 1px solid rgba(41, 113, 194, 0.5);
  border-radius: 22px;
  color: #fff;
  background: linear-gradient(145deg, #66acee, #3478bd);
  box-shadow: 0 18px 30px rgba(38, 101, 169, 0.26);
  transform: translate(-50%, -50%);
}

.security-core strong {
  font-size: 15px;
}

.security-core small {
  color: rgba(255, 255, 255, 0.74);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.security-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-self: center;
  gap: 18px;
  padding: 0;
  margin-bottom: 0;
  list-style: none;
}

.security-list li {
  position: relative;
  display: block;
  min-height: 176px;
  padding: 24px 20px 20px;
  border-top: 1px solid rgba(67, 136, 216, 0.42);
  background: linear-gradient(180deg, rgba(246, 251, 255, 0.42), transparent);
}

.security-list li > span {
  display: block;
  margin-bottom: 28px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.1em;
}

.security-list h3 {
  margin-top: 0;
  margin-bottom: 5px;
}

.deployment {
  position: relative;
}

.deployment-flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(18px, 2vw, 30px);
  padding: clamp(28px, 4vw, 46px);
  margin-bottom: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  background: linear-gradient(125deg, rgba(255, 255, 255, 0.78), rgba(221, 239, 255, 0.48));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), var(--shadow-soft);
  list-style: none;
}

.deployment-flow::before {
  position: absolute;
  top: 70px;
  right: 12.5%;
  left: 12.5%;
  height: 1px;
  background: linear-gradient(90deg, rgba(65, 136, 217, 0.24), rgba(65, 136, 217, 0.62), rgba(65, 136, 217, 0.24));
  content: "";
}

.deployment-flow li {
  position: relative;
  z-index: 1;
  min-height: 190px;
  padding: 0 clamp(4px, 1vw, 12px);
}

.deployment-flow li::after {
  position: absolute;
  top: 19px;
  right: calc(-1 * clamp(13px, 1.5vw, 23px));
  z-index: 2;
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  content: "";
  transform: rotate(45deg);
}

.deployment-flow li:last-child::after {
  display: none;
}

.deployment-flow li > span {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 34px;
  place-items: center;
  border: 1px solid rgba(69, 139, 218, 0.4);
  border-radius: 15px;
  color: var(--accent-deep);
  background: rgba(248, 252, 255, 0.92);
  box-shadow: 0 10px 22px rgba(45, 107, 176, 0.12);
  font-size: 12px;
  font-weight: 750;
}

.deployment-flow h3 {
  margin-top: 0;
}

.delivery-system {
  display: grid;
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(36px, 6vw, 74px);
  margin-top: 26px;
  padding: clamp(34px, 5vw, 62px);
}

.delivery-system__heading h3 {
  max-width: 12em;
  margin: 16px 0 15px;
  font-size: clamp(27px, 3vw, 40px);
  line-height: 1.3;
}

.delivery-system__heading p {
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

.delivery-cards {
  display: grid;
  gap: 0;
  padding: 0;
  margin: 0;
  list-style: none;
}

.delivery-cards li {
  display: grid;
  grid-template-columns: 44px 1fr;
  column-gap: 20px;
  padding: 22px 0;
  border-top: 1px solid rgba(70, 139, 218, 0.34);
}

.delivery-cards li > span {
  grid-row: 1 / span 3;
  color: var(--accent);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.1em;
}

.delivery-cards h4 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 18px;
}

.delivery-cards p {
  margin-bottom: 11px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.75;
}

.delivery-cards small {
  color: var(--ink-faint);
  font-size: 10px;
  letter-spacing: 0.04em;
  overflow-wrap: anywhere;
}

.closing {
  padding-top: 24px;
}

.closing-panel {
  position: relative;
  display: flex;
  min-height: 310px;
  align-items: center;
  justify-content: space-between;
  overflow: hidden;
  gap: 48px;
  padding: clamp(42px, 7vw, 84px);
}

.closing-panel::before {
  position: absolute;
  top: -110%;
  right: -4%;
  width: 54%;
  aspect-ratio: 1;
  border: 1px solid rgba(76, 143, 218, 0.22);
  border-radius: 50%;
  box-shadow:
    0 0 0 42px rgba(126, 181, 242, 0.08),
    0 0 0 88px rgba(126, 181, 242, 0.05);
  content: "";
}

.closing-panel > * {
  position: relative;
  z-index: 1;
}

.closing-panel h2 {
  max-width: 11em;
}

.closing-panel .button {
  min-width: 148px;
}

.site-footer {
  margin-top: 64px;
  border-top: 1px solid rgba(83, 143, 211, 0.2);
  background: rgba(240, 248, 255, 0.58);
}

.site-footer__inner {
  display: grid;
  min-height: 130px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 36px;
}

.brand--footer .brand-mark {
  width: 26px;
  height: 26px;
  flex-basis: 26px;
  border-radius: 7px;
}

.brand--footer .brand-name {
  font-size: 17px;
}

.site-footer nav {
  display: flex;
  gap: 30px;
  color: var(--ink-soft);
  font-size: 13px;
}

.site-footer p {
  justify-self: end;
  margin-bottom: 0;
  color: var(--ink-faint);
  font-size: 13px;
}

.site-footer__legal {
  display: flex;
  justify-content: center;
  padding: 0 0 24px;
}

.site-footer__legal .icp-record {
  margin: 0;
}

.site-footer__legal .icp-record a {
  color: var(--ink-faint);
  font-size: 12px;
}

.site-footer__legal .icp-record a:hover {
  color: var(--accent-deep);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header,
  .glass-panel,
  .product-visual {
    background: rgba(244, 250, 255, 0.98);
  }
}

@media (max-width: 1080px) {
  .hero {
    grid-template-columns: minmax(0, 0.98fr) minmax(380px, 1.02fr);
    gap: 36px;
  }

  .hero h1 {
    font-size: clamp(42px, 4.8vw, 52px);
  }

  .security-frame {
    grid-template-columns: minmax(280px, 0.85fr) minmax(390px, 1.15fr);
    gap: 28px;
  }

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

@media (max-width: 900px) {
  :root {
    --header-height: 70px;
  }

  .site-header__inner {
    grid-template-columns: 1fr auto;
  }

  .desktop-nav {
    display: none;
  }

  .mobile-nav {
    display: block;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 50px;
    padding-top: 76px;
  }

  .hero-copy {
    padding-bottom: 0;
  }

  .hero h1 {
    max-width: 10em;
    font-size: clamp(46px, 8vw, 68px);
  }

  .security-frame {
    grid-template-columns: 1fr;
  }

  .architecture-principles,
  .management-value,
  .delivery-system {
    grid-template-columns: 1fr;
  }

  .architecture-principles > div strong,
  .management-value__intro h3,
  .delivery-system__heading h3 {
    max-width: 18em;
  }

  .agent-value__intro {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 34px;
  }

  .agent-value__statement {
    max-width: 620px;
  }

  .agent-capabilities > div,
  .agent-capabilities > div:nth-child(1),
  .agent-capabilities > div:nth-child(2),
  .agent-capabilities > div:nth-child(3),
  .agent-capabilities > div:nth-child(4),
  .agent-capabilities > div:nth-child(5),
  .agent-capabilities > div:nth-child(6) {
    grid-column: span 6;
  }

  .security-visual {
    min-height: 430px;
  }

  .deployment-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .deployment-flow::before {
    display: none;
  }

  .deployment-flow li {
    min-height: 180px;
    padding: 24px;
    border: 1px solid rgba(77, 141, 214, 0.18);
    border-radius: 18px;
    background: rgba(248, 252, 255, 0.46);
  }

  .deployment-flow li::after {
    display: none;
  }

  .site-footer__inner {
    grid-template-columns: 1fr auto;
  }

  .site-footer nav {
    display: none;
  }
}

@media (max-width: 700px) {
  .shell {
    width: min(calc(100% - 32px), var(--shell));
  }

  .brand {
    gap: 10px;
  }

  .brand-name {
    font-size: 18px;
  }

  .button--login {
    min-height: 42px;
    padding-inline: 15px;
    font-size: 14px;
  }

  .hero {
    gap: 40px;
    padding-block: 60px 76px;
  }

  .hero h1 {
    margin-bottom: 24px;
    font-size: clamp(39px, 11vw, 54px);
    line-height: 1.16;
  }

  .hero-copy > p {
    margin-bottom: 28px;
    font-size: 17px;
    line-height: 1.8;
  }

  .hero-actions {
    gap: 18px;
  }

  .hero-actions .button {
    min-width: 124px;
  }

  .section {
    padding-block: 82px;
  }

  .section-heading {
    margin-bottom: 42px;
  }

  .section-heading h2,
  .closing-panel h2 {
    font-size: clamp(32px, 9vw, 44px);
  }

  .purpose-steps {
    grid-template-columns: 1fr;
    margin-bottom: 38px;
  }

  .architecture-grid,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .architecture-card,
  .scenario-card {
    min-height: 0;
  }

  .architecture-card {
    padding: 28px 24px;
  }

  .architecture-card__meta {
    margin-bottom: 24px;
  }

  .architecture-principles {
    padding: 28px 24px;
  }

  .architecture-principles ul,
  .management-value dl {
    grid-template-columns: 1fr;
  }

  .scenario-card {
    padding: 28px 24px;
  }

  .management-value,
  .delivery-system {
    padding: 30px 24px;
  }

  .purpose-steps::before {
    top: 26px;
    bottom: 26px;
    left: 25px;
    width: 1px;
    height: auto;
    background: var(--line-strong);
  }

  .purpose-steps li {
    display: grid;
    min-height: 150px;
    grid-template-columns: 52px 1fr;
    grid-template-rows: auto auto;
    column-gap: 22px;
    align-content: center;
    padding: 20px 0;
    text-align: left;
  }

  .purpose-steps li + li {
    border-left: 0;
    border-top: 1px solid rgba(84, 143, 211, 0.16);
  }

  .step-number {
    grid-row: 1 / span 2;
    margin-bottom: 0;
  }

  .purpose-steps h3 {
    margin-top: 0;
  }

  .conversation-flow {
    padding: 26px 20px 30px;
  }

  .conversation-flow__track {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .signal-group {
    width: 100%;
    text-align: left;
  }

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

  .signal-chips span,
  .signal-group--input .signal-chips span {
    padding: 10px 7px;
    text-align: center;
  }

  .signal-group--input .signal-chips span::before {
    display: none;
  }

  .flow-link {
    width: 1px;
    height: 36px;
    justify-self: center;
    background: linear-gradient(180deg, rgba(73, 144, 222, 0.22), rgba(73, 144, 222, 0.78));
  }

  .flow-link::before {
    top: 0;
    left: 50%;
    transform: translate(-50%, 0);
  }

  .flow-link i {
    top: auto;
    right: auto;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) rotate(135deg);
  }

  .flow-hub {
    width: min(100%, 220px);
    min-height: 168px;
    justify-self: center;
  }

  .agent-value__intro {
    margin-bottom: 42px;
  }

  .agent-value__statement {
    padding-left: 22px;
  }

  .agent-capabilities {
    grid-template-columns: 1fr;
  }

  .agent-capabilities > div,
  .agent-capabilities > div:nth-child(1),
  .agent-capabilities > div:nth-child(2),
  .agent-capabilities > div:nth-child(3),
  .agent-capabilities > div:nth-child(4),
  .agent-capabilities > div:nth-child(5),
  .agent-capabilities > div:nth-child(6) {
    min-height: 0;
    grid-column: 1;
    padding: 28px 4px 32px;
  }

  .security-frame {
    padding: 24px;
  }

  .security-visual {
    min-height: 370px;
  }

  .security-boundary--audit {
    width: min(100%, 350px);
  }

  .security-boundary--storage,
  .security-boundary--transport,
  .security-boundary--identity {
    inset: 48px 18px 18px;
  }

  .boundary-label {
    top: 15px;
    left: 14px;
    font-size: 11px;
  }

  .boundary-label b {
    margin-right: 5px;
    font-size: 9px;
  }

  .security-core {
    width: 104px;
    height: 68px;
    border-radius: 18px;
  }

  .security-list {
    gap: 12px;
  }

  .security-list li {
    min-height: 150px;
    padding: 20px 14px 16px;
  }

  .security-list li > span {
    margin-bottom: 20px;
  }

  .deployment-flow {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 26px 22px;
  }

  .deployment-flow::before {
    top: 54px;
    bottom: 54px;
    left: 46px;
    display: block;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, rgba(65, 136, 217, 0.2), rgba(65, 136, 217, 0.62), rgba(65, 136, 217, 0.2));
  }

  .deployment-flow li,
  .deployment-flow li:nth-child(3),
  .deployment-flow li:nth-child(4) {
    display: grid;
    min-height: 124px;
    grid-template-columns: 48px 1fr;
    grid-template-rows: auto auto;
    column-gap: 20px;
    align-content: center;
    padding: 20px 0;
    border: 0;
    border-radius: 0;
    background: transparent;
  }

  .deployment-flow li > span {
    z-index: 1;
    grid-row: 1 / span 2;
    margin-bottom: 0;
  }

  .deployment-flow h3 {
    margin-bottom: 5px;
  }

  .closing {
    padding-top: 8px;
  }

  .closing-panel {
    min-height: 390px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 36px 28px;
  }

  .closing-panel::before {
    top: auto;
    right: -32%;
    bottom: -58%;
    width: 90%;
  }

  .site-footer {
    margin-top: 64px;
  }

  .site-footer__inner {
    min-height: 120px;
    gap: 20px;
  }
}

@media (max-width: 430px) {
  .brand-mark {
    width: 27px;
    height: 27px;
    flex-basis: 27px;
  }

  .brand-name {
    font-size: 16px;
  }

  .button--login {
    padding-inline: 12px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .security-visual {
    min-height: 340px;
  }

  .security-boundary--audit {
    width: min(100%, 318px);
  }

  .security-boundary--storage,
  .security-boundary--transport,
  .security-boundary--identity {
    inset: 44px 12px 14px;
  }

  .boundary-label {
    left: 11px;
    font-size: 10px;
  }

  .security-list {
    grid-template-columns: 1fr;
  }

  .security-list li {
    min-height: 0;
    padding: 18px 12px 20px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    justify-items: start;
    padding-block: 28px;
  }

  .site-footer p {
    justify-self: start;
  }

  .site-footer__legal {
    justify-content: flex-start;
    padding-bottom: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header,
  .glass-panel,
  .product-visual {
    background: #f3f9ff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}


/* XD Jia trademark + Zhike product lockup (2026-07-23) */
.brand {
  gap: 10px;
  max-width: 100%;
  white-space: nowrap;
}

.brand-trademark {
  display: inline-flex;
  width: 146px;
  height: 42px;
  flex: 0 0 146px;
  align-items: center;
  justify-content: center;
  padding: 5px 8px;
  overflow: hidden;
  border: 1px solid rgba(34, 132, 255, 0.28);
  border-radius: 10px;
  background: linear-gradient(135deg, #071a38 0%, #0b315f 100%);
  box-shadow: 0 8px 20px rgba(7, 49, 95, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  box-sizing: border-box;
}

.brand-trademark__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-divider {
  width: 1px;
  height: 24px;
  flex: 0 0 1px;
  background: rgba(48, 73, 103, 0.3);
}

.brand-name {
  color: #173452;
  white-space: nowrap;
}

.brand--footer .brand-trademark {
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.brand--footer .brand-divider {
  background: rgba(255, 255, 255, 0.28);
}

@media (max-width: 1100px) and (min-width: 901px) {
  .brand-trademark {
    width: 126px;
    height: 38px;
    flex-basis: 126px;
  }

  .brand {
    gap: 8px;
  }

  .brand-name {
    font-size: 18px;
  }
}

@media (max-width: 900px) {
  .brand {
    gap: 8px;
  }

  .brand-trademark {
    width: 122px;
    height: 36px;
    flex-basis: 122px;
    padding: 4px 7px;
    border-radius: 9px;
  }

  .brand-divider {
    height: 21px;
  }

  .brand-name {
    font-size: 18px;
  }
}

@media (max-width: 700px) {
  .brand-trademark {
    width: 108px;
    height: 33px;
    flex-basis: 108px;
    padding: 4px 6px;
  }

  .brand-name {
    font-size: 16px;
  }
}

@media (max-width: 430px) {
  .brand {
    gap: 6px;
  }

  .brand-trademark {
    width: 98px;
    height: 31px;
    flex-basis: 98px;
    padding: 3px 5px;
    border-radius: 8px;
  }

  .brand-divider {
    height: 18px;
  }

  .brand-name {
    font-size: 15px;
    letter-spacing: -0.04em;
  }
}