/* dev-expert · anti-slop: P5 H5 E5 S5 R5 V4 */
/* 深空科技主题：文字由亮到暗，背景由浅到深 */
:root {
  --color-ink-950: oklch(0.98 0.005 240);
  --color-ink-900: oklch(0.94 0.012 242);
  --color-ink-800: oklch(0.87 0.018 244);
  --color-ink-700: oklch(0.79 0.025 246);
  --color-ink-600: oklch(0.7 0.032 248);
  --color-ink-500: oklch(0.56 0.038 250);
  --color-blue-deep: oklch(0.34 0.19 258);
  --color-blue-700: oklch(0.75 0.15 248);
  --color-blue-600: oklch(0.62 0.19 254);
  --color-blue-500: oklch(0.56 0.2 252);
  --color-cyan-500: oklch(0.82 0.14 205);
  --color-cyan-300: oklch(0.9 0.09 202);
  --color-sky-100: oklch(0.32 0.07 248 / 0.6);
  --color-surface: oklch(0.155 0.032 252);
  --color-surface-alt: oklch(0.195 0.04 252);
  --color-surface-deep: oklch(0.125 0.03 254);
  --color-white: oklch(1 0 0);
  --color-border: oklch(0.72 0.05 240 / 0.22);
  --color-border-strong: oklch(0.8 0.06 240 / 0.38);
  --color-success: oklch(0.76 0.15 158);
  --color-success-soft: oklch(0.3 0.07 158 / 0.42);
  --color-error: oklch(0.72 0.17 26);
  --color-error-soft: oklch(0.32 0.09 26 / 0.42);
  --color-warning: oklch(0.82 0.14 76);
  --color-overlay: oklch(0.06 0.02 250 / 0.72);
  --color-glow-blue: oklch(0.6 0.22 254 / 0.4);
  --color-glow-cyan: oklch(0.8 0.16 205 / 0.3);
  --color-white-muted: oklch(1 0 0 / 0.72);
  --color-white-faint: oklch(1 0 0 / 0.1);
  --color-transparent: transparent;
  --color-deep-bg: oklch(0.115 0.03 252);
  --color-ink-inverse: oklch(0.14 0.04 252);
  --color-space-1: oklch(0.13 0.035 254);
  --color-space-2: oklch(0.085 0.03 258);
  --color-glass: oklch(0.24 0.045 250 / 0.55);
  --shadow-soft: 0 1.25rem 3.75rem oklch(0.02 0.03 260 / 0.5);
  --shadow-card: 0 0.75rem 2.5rem oklch(0.02 0.03 260 / 0.42);
  --shadow-focus: 0 0 0 0.25rem oklch(0.78 0.15 205 / 0.34);
  --font-display: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.9rem;
  --radius-lg: 1.35rem;
  --radius-xl: 2rem;
  --radius-pill: 999px;
  --container: 74rem;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  min-width: 20rem;
  color: var(--color-ink-900);
  background: var(--color-surface);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: var(--color-transparent);
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-cyan-500);
  outline-offset: 3px;
  box-shadow: var(--shadow-focus);
}

::selection {
  color: var(--color-white);
  background: var(--color-blue-600);
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.section {
  padding-block: clamp(4.5rem, 8vw, 7.5rem);
}

.section--tight {
  padding-block: clamp(3.5rem, 6vw, 5rem);
}

.section--alt {
  background: var(--color-surface-alt);
}

.section--deep {
  color: var(--color-white);
  background: var(--color-ink-950);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
  color: var(--color-blue-600);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 1.6rem;
  height: 2px;
  background: var(--color-cyan-500);
  content: "";
}

.section--deep .eyebrow,
.hero .eyebrow,
.page-hero .eyebrow {
  color: var(--color-cyan-300);
}

.display-title,
h1,
h2,
h3 {
  margin: 0;
  color: inherit;
  font-family: var(--font-display);
  font-style: normal;
  line-height: 1.15;
  text-wrap: balance;
}

/* 字号层级：h1 64 / h2 44 / h3 21.6 / lead 18.4 / body 16 / meta 14 */
h1 {
  font-size: clamp(2.25rem, 4.8vw, 4rem);
  letter-spacing: -0.045em;
  line-height: 1.12;
}

h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.75rem);
  letter-spacing: -0.032em;
  line-height: 1.2;
}

h3 {
  font-size: clamp(1.12rem, 1.7vw, 1.35rem);
  letter-spacing: -0.015em;
  line-height: 1.35;
}

h4 {
  margin: 0;
  color: inherit;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  font-weight: 800;
  line-height: 1.4;
}

p {
  margin: 0 0 var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

.body-text {
  color: var(--color-ink-700);
  font-size: 1rem;
  line-height: 1.8;
}

.text-meta {
  color: var(--color-ink-500);
  font-size: 0.875rem;
  line-height: 1.6;
}

.lead {
  max-width: 43rem;
  margin: var(--space-6) 0 0;
  color: var(--color-ink-600);
  font-size: clamp(1rem, 1.35vw, 1.15rem);
  line-height: 1.75;
}

.section--deep .lead,
.hero .lead,
.page-hero .lead {
  color: var(--color-white-muted);
}

.kicker-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  gap: var(--space-12);
  align-items: end;
  margin-bottom: var(--space-12);
}

.kicker-grid .lead {
  margin: 0;
  justify-self: end;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.header-inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex: 0 0 auto;
}

.brand img {
  width: 2.35rem;
  height: 2.35rem;
}

.brand-copy {
  display: grid;
  gap: 0;
  line-height: 1.1;
}

.brand-name {
  color: var(--color-ink-950);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 850;
  letter-spacing: -0.025em;
}

.brand-tagline {
  color: var(--color-ink-500);
  font-size: 0.67rem;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  padding-inline: 0.9rem;
  border-radius: var(--radius-pill);
  color: var(--color-ink-700);
  font-size: 0.92rem;
  font-weight: 700;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-blue-700);
  background: var(--color-sky-100);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink-900);
  background: var(--color-white);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  margin: 0.22rem auto;
  background: currentColor;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.78rem 1.25rem;
  border: 1px solid var(--color-transparent);
  border-radius: var(--radius-pill);
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 180ms var(--ease-out), background-color 180ms var(--ease-out), color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

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

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

.button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
  transform: none;
}

.button--primary {
  color: var(--color-white);
  background: var(--color-blue-600);
}

.button--primary:hover {
  background: var(--color-blue-700);
}

.button--ghost {
  color: var(--color-ink-800);
  border-color: var(--color-border-strong);
  background: var(--color-white);
}

.button--light {
  color: var(--color-ink-950);
  background: var(--color-white);
}

.button--line-light {
  color: var(--color-white);
  border-color: var(--color-white-faint);
  background: var(--color-transparent);
}

.button--small {
  min-height: 2.6rem;
  padding: 0.65rem 1rem;
  font-size: 0.88rem;
}

.hero {
  position: relative;
  color: var(--color-white);
  background: var(--color-space-2);
  overflow: hidden;
}

.hero::before,
.hero::after {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
  content: "";
  pointer-events: none;
}

.hero::before {
  top: -18rem;
  right: -11rem;
  width: 38rem;
  height: 38rem;
  background: radial-gradient(circle, var(--color-glow-blue), var(--color-transparent) 70%);
}

.hero::after {
  bottom: -15rem;
  left: 24%;
  width: 30rem;
  height: 30rem;
  background: radial-gradient(circle, var(--color-glow-cyan), var(--color-transparent) 72%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(18rem, 0.92fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
  min-height: calc(100vh - 4.75rem);
  padding-block: clamp(5rem, 10vw, 8.5rem);
}

.hero h1 strong {
  color: var(--color-cyan-300);
  font-weight: 850;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  margin: var(--space-8) 0 0;
  padding: 0;
  color: var(--color-white-muted);
  font-size: 0.88rem;
  list-style: none;
}

.hero-note li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.hero-note li::before {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--color-cyan-500);
  content: "";
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  filter: drop-shadow(0 2rem 3rem var(--color-glow-blue));
}

.metric-strip {
  position: relative;
  z-index: 2;
  margin-top: calc(var(--space-10) * -1);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.metric-item {
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.metric-item + .metric-item {
  border-left: 1px solid var(--color-border);
}

.metric-value {
  display: block;
  color: var(--color-blue-700);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.05em;
}

.metric-label {
  display: block;
  margin-top: var(--space-3);
  color: var(--color-ink-600);
  font-size: 0.92rem;
}

.story-grid,
.about-grid,
.contact-layout,
.login-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 6vw, 5.5rem);
  align-items: center;
}

.story-visual {
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface-alt);
}

.story-points {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.story-point {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.story-index {
  color: var(--color-blue-600);
  font-family: var(--font-display);
  font-weight: 900;
}

.story-point p {
  margin: var(--space-1) 0 0;
  color: var(--color-ink-600);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-4);
}

.capability-card {
  grid-column: span 4;
  min-height: 15rem;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
}

.capability-card:nth-child(1),
.capability-card:nth-child(4) {
  grid-column: span 5;
}

.capability-card:nth-child(2),
.capability-card:nth-child(3) {
  grid-column: span 7;
}

.card-index {
  display: inline-flex;
  width: 2.2rem;
  height: 2.2rem;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-8);
  border-radius: var(--radius-pill);
  color: var(--color-blue-700);
  background: var(--color-sky-100);
  font-size: 0.8rem;
  font-weight: 900;
}

.capability-card p,
.service-card p,
.value-card p {
  margin: var(--space-3) 0 0;
  color: var(--color-ink-600);
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-12);
}

.flow-step {
  position: relative;
  padding: var(--space-6);
  border-top: 2px solid var(--color-blue-600);
  background: var(--color-white-faint);
}

.flow-step span {
  display: block;
  margin-bottom: var(--space-4);
  color: var(--color-cyan-300);
  font-weight: 900;
}

.flow-step p {
  margin: var(--space-3) 0 0;
  color: var(--color-white-muted);
}

.cta-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-8);
  align-items: center;
  padding: clamp(2rem, 5vw, 4.5rem);
  border-radius: var(--radius-xl);
  color: var(--color-white);
  background: linear-gradient(125deg, var(--color-blue-700), var(--color-ink-950));
  overflow: hidden;
}

.cta-band p {
  max-width: 40rem;
  margin: var(--space-4) 0 0;
  color: var(--color-white-muted);
}

.page-hero {
  position: relative;
  padding-block: clamp(4.5rem, 8vw, 7rem);
  color: var(--color-white);
  background: linear-gradient(135deg, oklch(0.21 0.05 252 / 0.92), oklch(0.1 0.03 254 / 0.94));
  overflow: hidden;
}

.page-hero::after {
  position: absolute;
  top: -12rem;
  right: -6rem;
  width: 30rem;
  height: 30rem;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-glow-cyan), var(--color-transparent) 70%);
  content: "";
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  max-width: 54rem;
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
}

.manifesto {
  display: grid;
  grid-template-columns: minmax(0, 0.6fr) minmax(0, 1.4fr);
  gap: clamp(2rem, 8vw, 7rem);
}

.manifesto-label {
  position: sticky;
  top: 7rem;
  align-self: start;
  color: var(--color-blue-700);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.manifesto-copy p {
  margin: 0 0 var(--space-8);
  color: var(--color-ink-700);
  font-size: clamp(1.15rem, 2.4vw, 1.75rem);
  line-height: 1.65;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.value-card {
  padding: var(--space-8);
  border-left: 2px solid var(--color-blue-600);
  background: var(--color-white);
}

.service-list {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-12);
}

.service-card {
  display: grid;
  grid-template-columns: 6rem minmax(12rem, 0.7fr) minmax(0, 1.3fr);
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
}

.service-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card);
}

.service-number {
  color: var(--color-blue-600);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.compare-card {
  padding: var(--space-8);
  border-radius: var(--radius-lg);
}

.compare-card--muted {
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
}

.compare-card--accent {
  color: var(--color-white);
  background: var(--color-blue-700);
}

.compare-card ul {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
}

.compare-card li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
}

.compare-card li::before {
  color: var(--color-cyan-300);
  content: "—";
}

.compare-card--muted li::before {
  color: var(--color-ink-500);
}

.contact-layout {
  align-items: start;
}

.contact-details {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.contact-item {
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-border);
}

.contact-item span {
  display: block;
  color: var(--color-ink-500);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.contact-item strong,
.contact-item a {
  display: block;
  margin-top: var(--space-1);
  color: var(--color-ink-950);
  font-size: 1.08rem;
  font-weight: 800;
}

.form-card,
.login-card {
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.form-field {
  display: grid;
  gap: var(--space-2);
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-field label,
.form-label {
  color: var(--color-ink-800);
  font-size: 0.88rem;
  font-weight: 800;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 3.2rem;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--color-ink-900);
  background: var(--color-surface);
}

.form-field textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--color-ink-500);
}

.form-hint,
.form-error {
  min-height: 1.4rem;
  margin: 0;
  font-size: 0.8rem;
}

.form-hint {
  color: var(--color-ink-500);
}

.form-error {
  color: var(--color-error);
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--color-ink-600);
  font-size: 0.85rem;
}

.checkbox-row input {
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.25rem;
  accent-color: var(--color-blue-600);
}

.form-status {
  display: none;
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.form-status.is-visible {
  display: block;
}

.form-status.is-success {
  color: var(--color-success);
  background: var(--color-success-soft);
}

.form-status.is-error {
  color: var(--color-error);
  background: var(--color-error-soft);
}

.login-section {
  min-height: calc(100vh - 4.75rem);
  display: grid;
  align-items: center;
  padding-block: var(--space-16);
  background: var(--color-surface-alt);
}

.login-layout {
  grid-template-columns: minmax(0, 0.9fr) minmax(22rem, 0.7fr);
}

.login-copy {
  max-width: 34rem;
}

.login-card h2 {
  font-size: 1.7rem;
}

.login-card .lead {
  margin-top: var(--space-3);
  font-size: 0.95rem;
}

.login-form {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.otp-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-block: var(--space-6);
  color: var(--color-ink-500);
  font-size: 0.78rem;
}

.auth-divider::before,
.auth-divider::after {
  flex: 1;
  height: 1px;
  background: var(--color-border);
  content: "";
}

.session-panel {
  display: none;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  background: var(--color-sky-100);
}

.session-panel.is-visible {
  display: block;
}

.session-panel p {
  margin: 0 0 var(--space-4);
}

.site-footer {
  padding-block: var(--space-12) var(--space-6);
  color: var(--color-white);
  background: var(--color-ink-950);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(12rem, 0.6fr) minmax(12rem, 0.7fr);
  gap: var(--space-12);
  padding-bottom: var(--space-10);
}

.site-footer .brand-name {
  color: var(--color-white);
}

.site-footer .brand-tagline,
.footer-copy,
.footer-links a,
.footer-contact {
  color: var(--color-white-muted);
}

.footer-copy {
  max-width: 29rem;
  margin: var(--space-5) 0 0;
}

.footer-heading {
  margin: 0 0 var(--space-4);
  color: var(--color-white);
  font-size: 0.85rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.footer-links {
  display: grid;
  gap: var(--space-2);
}

.footer-links a:hover {
  color: var(--color-cyan-300);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-white-faint);
  color: var(--color-white-muted);
  font-size: 0.78rem;
}

.reveal {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 64rem) {
  .site-nav {
    position: fixed;
    top: 4.75rem;
    right: 1rem;
    left: 1rem;
    z-index: var(--z-dropdown);
    display: none;
    padding: var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-soft);
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav a {
    justify-content: flex-start;
  }

  .nav-toggle {
    display: block;
  }

  .header-actions .button {
    display: none;
  }

  .hero-inner,
  .story-grid,
  .about-grid,
  .contact-layout,
  .login-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-inner {
    min-height: auto;
  }

  .hero-visual {
    max-width: 38rem;
    margin-inline: auto;
  }

  .login-copy {
    max-width: 48rem;
  }

  .capability-card,
  .capability-card:nth-child(1),
  .capability-card:nth-child(2),
  .capability-card:nth-child(3),
  .capability-card:nth-child(4) {
    grid-column: span 6;
  }

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

  .footer-main {
    grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 0.7fr));
    gap: var(--space-6);
  }
}

@media (max-width: 48rem) {
  .brand-tagline {
    display: none;
  }

  .section {
    padding-block: var(--space-16);
  }

  .kicker-grid,
  .manifesto,
  .metric-grid,
  .value-grid,
  .compare-grid,
  .form-grid,
  .footer-main {
    grid-template-columns: minmax(0, 1fr);
  }

  .kicker-grid {
    gap: var(--space-5);
  }

  .kicker-grid .lead {
    justify-self: start;
  }

  .metric-strip {
    margin-top: calc(var(--space-6) * -1);
  }

  .metric-item + .metric-item {
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }

  .capability-card,
  .capability-card:nth-child(1),
  .capability-card:nth-child(2),
  .capability-card:nth-child(3),
  .capability-card:nth-child(4) {
    grid-column: 1 / -1;
  }

  .service-card {
    grid-template-columns: auto minmax(0, 1fr);
    gap: var(--space-3) var(--space-4);
  }

  .service-card p {
    grid-column: 1 / -1;
  }

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

  .cta-band {
    grid-template-columns: minmax(0, 1fr);
  }

  .cta-band .button {
    justify-self: start;
  }

  .manifesto-label {
    position: static;
  }

  .form-field--full {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 30rem) {
  .container {
    width: min(calc(100% - 1.25rem), var(--container));
  }

  .hero-actions,
  .hero-actions .button,
  .form-card .button--primary {
    width: 100%;
  }

  .otp-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .otp-row .button {
    width: 100%;
  }
}

/* ============ 深空背景 / 动态星空 ============ */
body {
  background: var(--color-space-2);
}

.cosmos-backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 12% 4%, oklch(0.24 0.07 258 / 0.85), transparent 62%),
    radial-gradient(90% 70% at 88% 18%, oklch(0.2 0.09 288 / 0.6), transparent 60%),
    radial-gradient(80% 60% at 50% 100%, oklch(0.16 0.06 232 / 0.7), transparent 65%),
    linear-gradient(180deg, var(--color-space-1), var(--color-space-2) 60%);
}

.cosmos-backdrop canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.cosmos-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, oklch(0.75 0.06 240 / 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, oklch(0.75 0.06 240 / 0.055) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: radial-gradient(120% 90% at 50% 0%, black 20%, transparent 78%);
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

/* ============ 深色玻璃化修正 ============ */
.site-header {
  border-bottom-color: var(--color-border);
  background: oklch(0.145 0.032 252 / 0.82);
  backdrop-filter: blur(14px);
}

.section--alt {
  background: oklch(0.19 0.04 252 / 0.66);
}

.section--deep,
.site-footer {
  background: oklch(0.115 0.03 252 / 0.9);
}

.metric-grid,
.capability-card,
.service-card,
.value-card,
.form-card,
.login-card,
.story-visual,
.compare-card--muted,
.panel {
  background: var(--color-glass);
  backdrop-filter: blur(10px);
}

.value-card {
  background: oklch(0.22 0.045 250 / 0.5);
}

.button--light {
  color: var(--color-ink-inverse);
  background: linear-gradient(120deg, var(--color-cyan-300), oklch(0.98 0.005 240));
}

.button--line-light {
  border-color: oklch(1 0 0 / 0.28);
}

.button--ghost {
  color: var(--color-ink-900);
  border-color: var(--color-border-strong);
  background: oklch(0.28 0.05 250 / 0.45);
}

.button--ghost:hover {
  border-color: var(--color-cyan-500);
  background: oklch(0.34 0.07 250 / 0.6);
}

.compare-card--accent {
  background: linear-gradient(150deg, var(--color-blue-deep), oklch(0.26 0.14 262 / 0.9));
}

.form-field input,
.form-field select,
.form-field textarea,
.admin-field input,
.admin-field select,
.admin-field textarea {
  color: var(--color-ink-900);
  background: oklch(0.12 0.028 252 / 0.75);
  border-color: var(--color-border);
}

/* ============ 首页轮播 ============ */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-slides {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1100ms var(--ease-in-out);
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
}

.hero-slide.is-active img {
  animation: hero-drift 20s var(--ease-in-out) infinite alternate;
}

@keyframes hero-drift {
  from { transform: scale(1.04) translate3d(0, 0, 0); }
  to { transform: scale(1.13) translate3d(-1.5%, -1.5%, 0); }
}

.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(100deg, oklch(0.09 0.03 254 / 0.94) 0%, oklch(0.1 0.03 254 / 0.78) 42%, oklch(0.1 0.03 254 / 0.34) 100%),
    linear-gradient(0deg, var(--color-space-2) 2%, transparent 34%);
}

.hero-inner {
  z-index: 2;
  min-height: clamp(34rem, 86vh, 50rem);
  align-items: center;
}

.hero-dots {
  position: absolute;
  bottom: clamp(1.5rem, 4vw, 3rem);
  left: 50%;
  z-index: 3;
  display: flex;
  gap: var(--space-3);
  transform: translateX(-50%);
}

.hero-dot {
  width: 2.4rem;
  height: 0.3rem;
  padding: 0;
  border: 0;
  border-radius: var(--radius-pill);
  background: oklch(1 0 0 / 0.28);
  cursor: pointer;
  transition: background-color 240ms var(--ease-out), width 240ms var(--ease-out);
}

.hero-dot[aria-current="true"] {
  width: 3.6rem;
  background: var(--color-cyan-300);
}

.hero-panel {
  display: grid;
  gap: var(--space-4);
  padding: clamp(1.25rem, 2.5vw, 1.9rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: oklch(0.14 0.035 252 / 0.62);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
}

.hero-panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--color-ink-800);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hero-panel-note {
  color: var(--color-ink-500);
  font-size: 0.82rem;
  line-height: 1.6;
}

/* ============ 通用面板 / 标签 ============ */
.panel {
  padding: clamp(1.25rem, 3vw, 2.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-cyan-300);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.tag--solid {
  border-color: transparent;
  color: var(--color-ink-inverse);
  background: var(--color-cyan-500);
}

/* ============ 可视化数据 ============ */
.viz-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-12);
}

.viz-card {
  display: grid;
  gap: var(--space-5);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-glass);
  backdrop-filter: blur(10px);
}

.viz-card--wide {
  grid-column: span 2;
}

.viz-head {
  display: grid;
  gap: var(--space-2);
}

.viz-head h3 {
  font-size: 1.22rem;
}

.viz-head p {
  margin: 0;
  color: var(--color-ink-600);
  font-size: 0.9rem;
  line-height: 1.65;
}

.bar-list {
  display: grid;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.bar-row {
  display: grid;
  grid-template-columns: minmax(6rem, 9rem) minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
}

.bar-label {
  color: var(--color-ink-800);
  font-size: 0.88rem;
  font-weight: 700;
}

.bar-track {
  height: 0.65rem;
  border-radius: var(--radius-pill);
  background: oklch(0.72 0.05 240 / 0.12);
  overflow: hidden;
}

.bar-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-blue-600), var(--color-cyan-500));
  transition: width 1200ms var(--ease-out);
}

.bar-value {
  color: var(--color-cyan-300);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sparkline {
  width: 100%;
  height: auto;
  overflow: visible;
}

.sparkline-axis {
  color: var(--color-ink-500);
  font-size: 0.68rem;
}

.data-table-wrap {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.data-table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table caption {
  padding: var(--space-4);
  color: var(--color-ink-500);
  font-size: 0.82rem;
  text-align: left;
}

.data-table th,
.data-table td {
  padding: 0.85rem var(--space-4);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.data-table thead th {
  position: sticky;
  top: 0;
  color: var(--color-ink-700);
  background: oklch(0.2 0.04 252 / 0.96);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:hover {
  background: oklch(0.72 0.06 240 / 0.06);
}

.data-table td:first-child {
  color: var(--color-ink-900);
  font-weight: 700;
}

.cell-up {
  color: oklch(0.82 0.16 150);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.cell-flat {
  color: var(--color-ink-500);
  font-variant-numeric: tabular-nums;
}

.donut-wrap {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-6);
  align-items: center;
}

.donut-legend {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.donut-legend li {
  display: grid;
  grid-template-columns: 0.6rem minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  font-size: 0.86rem;
}

.donut-legend span:first-child {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
}

.donut-legend b {
  color: var(--color-cyan-300);
  font-variant-numeric: tabular-nums;
}

/* ============ 客户案例 ============ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.case-card {
  display: grid;
  gap: var(--space-4);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  transition: border-color 240ms var(--ease-out), transform 240ms var(--ease-out);
}

.case-card:hover {
  border-color: var(--color-cyan-500);
  transform: translateY(-3px);
}

.case-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.case-client {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 850;
  letter-spacing: -0.015em;
}

.case-scenario {
  margin: 0;
  color: var(--color-ink-600);
  font-size: 0.95rem;
  line-height: 1.7;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin: 0;
  padding: var(--space-4) 0 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
}

.case-metrics div {
  display: grid;
  gap: 0.2rem;
}

.case-metrics dt {
  color: var(--color-ink-500);
  font-size: 0.74rem;
}

.case-metrics dd {
  margin: 0;
  color: var(--color-cyan-300);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 850;
}

.case-detail {
  display: none;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px dashed var(--color-border);
}

.case-card.is-open .case-detail {
  display: grid;
}

.case-detail-block {
  display: grid;
  gap: var(--space-2);
}

.case-detail-block h4 {
  color: var(--color-cyan-300);
  font-size: 0.9rem;
}

.case-detail-block p {
  margin: 0;
  color: var(--color-ink-700);
  font-size: 0.92rem;
  line-height: 1.75;
}

.case-toggle {
  justify-self: start;
  min-height: 2.4rem;
  padding: 0.4rem 0;
  border: 0;
  color: var(--color-cyan-300);
  background: none;
  font-size: 0.88rem;
  font-weight: 800;
  cursor: pointer;
}

/* ============ 新闻资讯 ============ */
.news-list {
  display: grid;
  gap: var(--space-4);
}

.news-item {
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-glass);
  backdrop-filter: blur(10px);
}

.news-item-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  color: var(--color-ink-500);
  font-size: 0.8rem;
}

.news-item h3 {
  font-size: 1.22rem;
}

.news-item-summary {
  margin: var(--space-3) 0 0;
  color: var(--color-ink-600);
  font-size: 0.95rem;
  line-height: 1.75;
}

.news-body {
  display: none;
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px dashed var(--color-border);
}

.news-item.is-open .news-body {
  display: block;
}

.news-body p {
  margin: 0 0 var(--space-4);
  color: var(--color-ink-700);
  font-size: 0.98rem;
  line-height: 1.9;
}

.news-body p:last-child {
  margin-bottom: 0;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.filter-chip {
  min-height: 2.5rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink-700);
  background: oklch(0.22 0.04 252 / 0.45);
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
}

.filter-chip.is-active {
  border-color: var(--color-cyan-500);
  color: var(--color-ink-inverse);
  background: var(--color-cyan-500);
}

/* ============ FAQ ============ */
.faq-list {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-10);
  max-width: 56rem;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: oklch(0.2 0.04 252 / 0.5);
  overflow: hidden;
}

.faq-item[open] {
  border-color: var(--color-border-strong);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 3.25rem;
  padding: var(--space-4) var(--space-5);
  color: var(--color-ink-900);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 750;
  line-height: 1.5;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  flex: 0 0 auto;
  color: var(--color-cyan-300);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1;
  content: "+";
  transition: transform 220ms var(--ease-out);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--color-ink-700);
  font-size: 0.95rem;
  line-height: 1.85;
}

.faq-answer p {
  margin: 0 0 var(--space-3);
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.section--deep .faq-item,
.hero .faq-item {
  background: oklch(1 0 0 / 0.05);
}

/* ============ 后台管理 ============ */
.admin-section {
  padding-block: clamp(3rem, 6vw, 5rem);
}

.admin-shell {
  display: grid;
  gap: var(--space-8);
}

.admin-notice {
  display: none;
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-glass);
  font-size: 0.9rem;
  line-height: 1.7;
}

.admin-notice.is-visible {
  display: block;
}

.admin-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.admin-tab {
  min-height: 2.9rem;
  padding: 0.55rem 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink-700);
  background: oklch(0.22 0.04 252 / 0.45);
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
}

.admin-tab.is-active {
  border-color: var(--color-cyan-500);
  color: var(--color-ink-inverse);
  background: var(--color-cyan-500);
}

/* ============ 后台侧边栏布局 ============ */
.admin-layout {
  display: grid;
  grid-template-columns: 13.5rem minmax(0, 1fr);
  gap: var(--space-8);
  align-items: start;
}

.admin-sidebar {
  position: sticky;
  top: 6rem;
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: oklch(0.18 0.04 252 / 0.55);
}

.admin-sidebar-title {
  margin: 0 0 var(--space-2);
  padding-inline: var(--space-3);
  color: var(--color-ink-500);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.admin-sidebar .admin-tab {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  justify-content: flex-start;
  border-radius: var(--radius-md);
}

.admin-sidebar .admin-tab svg {
  flex-shrink: 0;
  opacity: 0.85;
}

.admin-main {
  min-width: 0;
}

@media (max-width: 64rem) {
  .admin-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .admin-sidebar {
    position: static;
    display: flex;
    flex-wrap: wrap;
  }

  .admin-sidebar-title {
    width: 100%;
  }

  .admin-sidebar .admin-tab {
    width: auto;
  }
}

.admin-table-wrap {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  min-width: 44rem;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.admin-table th,
.admin-table td {
  padding: 0.8rem var(--space-4);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
}

.admin-table thead th {
  color: var(--color-ink-700);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.admin-table tbody tr:last-child td {
  border-bottom: 0;
}

.admin-row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.admin-mini {
  min-height: 2.2rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-ink-800);
  background: oklch(0.26 0.05 250 / 0.5);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}

.admin-mini:hover {
  border-color: var(--color-cyan-500);
  color: var(--color-cyan-300);
}

.admin-mini--danger:hover {
  border-color: var(--color-error);
  color: var(--color-error);
}

.admin-editor {
  display: none;
  gap: var(--space-5);
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-glass);
}

.admin-editor.is-visible {
  display: grid;
}

.admin-editor-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.admin-field {
  display: grid;
  gap: var(--space-2);
}

.admin-field--wide {
  grid-column: span 2;
}

.admin-field label {
  color: var(--color-ink-700);
  font-size: 0.8rem;
  font-weight: 800;
}

.admin-field input,
.admin-field select,
.admin-field textarea {
  min-height: 2.9rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
}

.admin-field textarea {
  min-height: 7rem;
  line-height: 1.7;
  resize: vertical;
}

.admin-editor-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.admin-hint {
  color: var(--color-ink-500);
  font-size: 0.84rem;
  line-height: 1.7;
}

@media (max-width: 64rem) {
  .viz-grid,
  .case-grid,
  .admin-editor-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .viz-card--wide {
    grid-column: auto;
  }

  .donut-wrap {
    grid-template-columns: minmax(0, 1fr);
    justify-items: center;
  }
}

@media (max-width: 40rem) {
  .case-metrics {
    grid-template-columns: minmax(0, 1fr);
  }

  .bar-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .bar-label {
    grid-column: span 2;
  }
}

/* ============ 圆形 / 椭圆形布局（第三轮改版） ============ */
/* 通用：圆形徽章卡片 */
.orb-card {
  position: relative;
  display: grid;
  justify-items: center;
  gap: var(--space-4);
  padding: clamp(1.75rem, 3vw, 2.5rem) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  text-align: center;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: border-color 240ms var(--ease-out), transform 240ms var(--ease-out);
}

.orb-card:hover {
  border-color: var(--color-cyan-500);
  transform: translateY(-4px);
}

.orb-card::before {
  position: absolute;
  top: -4.5rem;
  left: 50%;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-glow-blue), var(--color-transparent) 68%);
  content: "";
  transform: translateX(-50%);
  pointer-events: none;
}

/* 圆形序号徽章：正圆 + 外椭圆轨道环 */
.orb-badge {
  position: relative;
  display: grid;
  width: 5.25rem;
  height: 5.25rem;
  place-items: center;
  margin-bottom: var(--space-2);
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  color: var(--color-cyan-300);
  background: radial-gradient(circle at 32% 28%, oklch(0.34 0.12 254 / 0.85), oklch(0.16 0.05 252 / 0.9) 72%);
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  box-shadow: 0 0 2.2rem var(--color-glow-blue);
}

.orb-badge::before,
.orb-badge::after {
  position: absolute;
  inset: -0.85rem;
  border: 1px dashed oklch(0.75 0.12 220 / 0.4);
  border-radius: 50%;
  content: "";
  transform: scaleY(0.62) rotate(-14deg);
  pointer-events: none;
}

.orb-badge::after {
  inset: -1.5rem;
  border-color: oklch(0.75 0.12 220 / 0.18);
  transform: scaleY(0.5) rotate(16deg);
}

.orb-card h3 {
  font-size: clamp(1.1rem, 1.7vw, 1.3rem);
}

.orb-card p {
  margin: 0;
  color: var(--color-ink-600);
  font-size: 0.95rem;
  line-height: 1.8;
}

.orb-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

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

/* 六卡版：徽章略小 */
.orb-grid--six .orb-badge {
  width: 4.25rem;
  height: 4.25rem;
  font-size: 1.05rem;
}

/* 案例三卡：椭圆数据徽章 */
.orb-stat {
  display: inline-grid;
  min-width: 7.5rem;
  min-height: 3.4rem;
  place-items: center;
  padding: 0.4rem 1.4rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  color: var(--color-cyan-300);
  background: radial-gradient(ellipse at 30% 25%, oklch(0.32 0.1 254 / 0.7), oklch(0.16 0.05 252 / 0.85) 75%);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 900;
  box-shadow: 0 0 1.6rem var(--color-glow-cyan);
}

/* ============ 关于我们 · 我们的判断（图文圆/椭圆） ============ */
.manifesto-label {
  background: linear-gradient(100deg, var(--color-cyan-300), var(--color-blue-600));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.22em;
}

.manifesto-orbit {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.manifesto-orbit .manifesto-copy p {
  margin: 0 0 var(--space-6);
  font-size: clamp(1.05rem, 1.9vw, 1.4rem);
}

.orbit-figure {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  max-width: 26rem;
  margin-inline: auto;
}

.orbit-figure svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.orbit-ring {
  fill: none;
  stroke: oklch(0.75 0.12 220 / 0.35);
  stroke-dasharray: 5 7;
}

.orbit-ring--outer {
  stroke: oklch(0.75 0.12 220 / 0.18);
}

.orbit-core {
  fill: url(#orbitCoreFill);
  filter: drop-shadow(0 0 1.6rem var(--color-glow-blue));
}

.orbit-node {
  fill: oklch(0.2 0.06 252);
  stroke: var(--color-cyan-500);
  stroke-width: 1.4;
}

.orbit-label {
  fill: var(--color-ink-800);
  font-size: 11px;
  font-weight: 700;
  text-anchor: middle;
}

.orbit-core-label {
  fill: var(--color-white);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-anchor: middle;
}

.orbit-spin {
  transform-origin: center;
  animation: orbit-rotate 46s linear infinite;
}

.orbit-spin--reverse {
  animation: orbit-rotate-rev 64s linear infinite;
}

@keyframes orbit-rotate {
  to { transform: rotate(360deg); }
}

@keyframes orbit-rotate-rev {
  to { transform: rotate(-360deg); }
}

/* ============ 底部版权 + 二维码 ============ */
.footer-bottom {
  align-items: center;
}

.footer-qr {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}

.footer-qr img {
  width: 4.4rem;
  height: 4.4rem;
  border: 1px solid var(--color-white-faint);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  padding: 0.25rem;
}

.footer-qr span {
  max-width: 8rem;
  color: var(--color-white-muted);
  font-size: 0.74rem;
  line-height: 1.5;
}

.footer-qr--main {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
}

.footer-qr--main img {
  width: 5.4rem;
  height: 5.4rem;
}

.footer-qr--main span {
  max-width: 10rem;
}

.footer-beian {
  color: var(--color-white-muted);
  text-decoration: none;
  transition: color 200ms var(--ease-out);
}

.footer-beian:hover {
  color: var(--color-cyan-300);
}

/* ============ 动态数据徽章 ============ */
.chart-live-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  color: var(--color-ink-600);
  font-size: 0.78rem;
}

.chart-live-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-cyan-500);
  box-shadow: 0 0 0.6rem var(--color-cyan-300);
  animation: chart-live-pulse 2s ease-in-out infinite;
}

@keyframes chart-live-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}

/* ============ AI 客服浮窗 ============ */
.chat-launcher {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  z-index: var(--z-toast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 3.2rem;
  padding: 0.7rem 1.3rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-white);
  background: linear-gradient(120deg, var(--color-blue-600), var(--color-blue-deep));
  box-shadow: 0 0.9rem 2.4rem var(--color-glow-blue);
  font-size: 0.92rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 200ms var(--ease-out);
}

.chat-launcher:hover {
  transform: translateY(-3px);
}

.chat-launcher svg {
  width: 1.2rem;
  height: 1.2rem;
}

.chat-panel {
  position: fixed;
  right: 1.4rem;
  bottom: 5.4rem;
  z-index: var(--z-toast);
  display: none;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: min(24rem, calc(100vw - 2rem));
  height: min(34rem, calc(100vh - 8rem));
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: oklch(0.16 0.04 252 / 0.97);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.chat-panel.is-open {
  display: grid;
}

.chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.chat-head strong {
  color: var(--color-ink-950);
  font-family: var(--font-display);
  font-size: 0.98rem;
}

.chat-head small {
  display: block;
  color: var(--color-ink-500);
  font-size: 0.72rem;
}

.chat-close {
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-ink-700);
  background: var(--color-transparent);
  cursor: pointer;
}

.chat-body {
  display: grid;
  gap: var(--space-3);
  align-content: start;
  padding: var(--space-4);
  overflow-y: auto;
}

.chat-msg {
  max-width: 86%;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.chat-msg--bot {
  justify-self: start;
  border: 1px solid var(--color-border);
  border-bottom-left-radius: var(--space-1);
  color: var(--color-ink-900);
  background: oklch(0.24 0.05 250 / 0.6);
}

.chat-msg--user {
  justify-self: end;
  border-bottom-right-radius: var(--space-1);
  color: var(--color-white);
  background: var(--color-blue-600);
}

.chat-msg--typing {
  color: var(--color-ink-500);
}

.chat-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
}

.chat-form input {
  min-height: 2.8rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink-900);
  background: oklch(0.12 0.028 252 / 0.75);
}

.chat-form button {
  min-height: 2.8rem;
  padding: 0.5rem 1.1rem;
  border: 0;
  border-radius: var(--radius-pill);
  color: var(--color-white);
  background: var(--color-blue-600);
  font-weight: 800;
  cursor: pointer;
}

.chat-form button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

@media (max-width: 64rem) {
  .orb-grid,
  .orb-grid--six {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .manifesto-orbit {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 40rem) {
  .orb-grid,
  .orb-grid--six {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-qr {
    margin-left: 0;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero-slide.is-active img {
    animation: none;
    transform: scale(1.04);
  }

  .bar-fill {
    transition: none;
  }
}

/* ============ 返回顶部按钮 ============ */
.back-to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 5.2rem;
  z-index: 450;
  display: inline-flex;
  width: 3rem;
  height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-blue-600), var(--color-blue-deep));
  box-shadow: 0 0.5rem 1.5rem var(--color-glow-blue);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.6rem);
  transition: opacity 250ms var(--ease-out), transform 250ms var(--ease-out);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-2px);
}

.back-to-top svg {
  width: 1.1rem;
  height: 1.1rem;
}