/* Max Okay — AI 自动化工作室 */

:root {
  --bg: #070b14;
  --bg-elevated: #0e1524;
  --bg-card: #121a2b;
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(91, 140, 255, 0.35);
  --text: #e8eef9;
  --text-muted: #94a3b8;
  --text-soft: #64748b;
  --accent: #5b8cff;
  --accent-soft: rgba(91, 140, 255, 0.12);
  --accent-glow: rgba(91, 140, 255, 0.28);
  --mint: #3ddc97;
  --mint-soft: rgba(61, 220, 151, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --max: 1080px;
  --font: "Inter", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
    "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(91, 140, 255, 0.18), transparent 55%),
    radial-gradient(ellipse 40% 30% at 90% 10%, rgba(61, 220, 151, 0.08), transparent 50%),
    radial-gradient(ellipse 35% 25% at 10% 40%, rgba(91, 140, 255, 0.06), transparent 50%);
  z-index: -1;
}

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

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

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 20, 0.72);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #0b1220;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 0.95rem;
}

.brand-text span {
  font-size: 0.72rem;
  color: var(--text-soft);
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem !important;
  background: var(--accent) !important;
  color: #fff !important;
  font-weight: 600;
  border-radius: 999px !important;
  box-shadow: 0 0 0 1px rgba(91, 140, 255, 0.4), 0 8px 24px var(--accent-glow);
}

.nav-cta:hover {
  filter: brightness(1.06);
  background: var(--accent) !important;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  font-size: 1.1rem;
}

/* Hero */
.hero {
  padding: 5.5rem 0 4rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  color: #a8c4ff;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero-eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px var(--mint-soft);
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3.15rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 16ch;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, #8eb0ff 0%, #5b8cff 45%, #3ddc97 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 40rem;
}

.hero-sub {
  margin: 0 0 2rem;
  font-size: 0.92rem;
  color: var(--text-soft);
  letter-spacing: 0.01em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, filter 0.15s ease, background 0.15s ease;
  cursor: pointer;
}

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

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 30px var(--accent-glow);
}

.btn-primary:hover {
  filter: brightness(1.06);
}

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

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(148, 163, 184, 0.28);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  max-width: 40rem;
}

.meta-card {
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(18, 26, 43, 0.7);
  border: 1px solid var(--border);
}

.meta-card strong {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 0.15rem;
}

.meta-card span {
  font-size: 0.78rem;
  color: var(--text-soft);
}

/* Sections */
section {
  padding: 4.25rem 0;
}

.section-head {
  margin-bottom: 2rem;
  max-width: 38rem;
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.section-head h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.55rem, 3.2vw, 2rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.section-head p {
  margin: 0;
  color: var(--text-muted);
}

/* Services */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  background: linear-gradient(180deg, rgba(18, 26, 43, 0.95), rgba(14, 21, 36, 0.95));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem 1.5rem;
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--border-strong);
}

.card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.12rem;
  letter-spacing: -0.015em;
}

.card p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.card li {
  font-size: 0.86rem;
  color: var(--text-soft);
  padding-left: 1.1rem;
  position: relative;
}

.card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
}

.card-foot {
  margin-top: 1.15rem;
  padding-top: 0.95rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-soft);
}

/* How it works */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 1.35rem 1.25rem;
  border-radius: var(--radius);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.step h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Case */
.case {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
  align-items: stretch;
}

.case-main,
.case-side {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  padding: 1.5rem;
}

.case-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: #9ae6c0;
  background: var(--mint-soft);
  border: 1px solid rgba(61, 220, 151, 0.25);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  margin-bottom: 1rem;
}

.case-main h3 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.case-main p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.case-flow {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.case-flow-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 0.85rem 0.95rem;
  border-radius: var(--radius-sm);
  background: rgba(7, 11, 20, 0.55);
  border: 1px solid var(--border);
}

.case-flow-item .tag {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 0.2rem 0.45rem;
  white-space: nowrap;
}

.case-flow-item p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.case-side h4 {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
}

.case-side ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.case-side li {
  padding: 0.85rem 0.95rem;
  border-radius: var(--radius-sm);
  background: rgba(7, 11, 20, 0.45);
  border: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.case-side li strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.2rem;
  font-size: 0.9rem;
}

.note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-soft);
}

/* Contact */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: stretch;
}

.contact-card,
.contact-panel {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(160deg, rgba(18, 26, 43, 0.98), rgba(11, 18, 32, 0.98));
  padding: 1.6rem 1.5rem;
}

.contact-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.contact-card p {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
}

.contact-list {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.contact-list li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-list .dot {
  width: 8px;
  height: 8px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.mailto {
  word-break: break-all;
  color: #a8c4ff;
  font-weight: 600;
}

.mailto:hover {
  text-decoration: underline;
}

.form {
  display: grid;
  gap: 0.85rem;
}

.form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form input,
.form textarea,
.form select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(7, 11, 20, 0.65);
  color: var(--text);
  font: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form input:focus,
.form textarea:focus,
.form select:focus {
  border-color: var(--border-strong);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

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

.form-hint {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-soft);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2.25rem;
  color: var(--text-soft);
  font-size: 0.82rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
}

.footer a:hover {
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 900px) {
  .cards,
  .steps,
  .case,
  .contact-wrap,
  .hero-meta {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero h1 {
    max-width: none;
  }
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem 1.25rem 1rem;
    background: rgba(7, 11, 20, 0.96);
    border-bottom: 1px solid var(--border);
    gap: 0.25rem;
  }

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

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav {
    position: sticky;
  }

  .nav-inner {
    position: relative;
  }

  .container {
    width: min(100% - 1.5rem, var(--max));
  }

  section {
    padding: 3.25rem 0;
  }
}

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

  .btn,
  .card {
    transition: none;
  }
}