:root {
  --ink: #151922;
  --muted: #68717d;
  --line: #e3e7ec;
  --paper: #fff;
  --soft: #f5f7f9;
  --teal: #517f7b;
  --teal-dark: #2f5552;
  --blue: #0878cf;
  --red: #e33b35;
  --gold: #d49a2f;
  --night: #101821;
  --night-2: #172331;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(227,231,236,.9);
  backdrop-filter: blur(14px);
}

.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.brand img { width: 122px; height: auto; }
.brand span { color: var(--teal-dark); font-size: 14px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #26303a;
  font-size: 15px;
}

.nav-action,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 0;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
}

.nav-action,
.btn-primary { background: var(--red); color: #fff; }
.btn-secondary { background: #fff; color: var(--ink); }
.menu-button { display: none; border: 0; background: transparent; font-size: 24px; }

.hero {
  position: relative;
  min-height: 690px;
  color: #fff;
  overflow: hidden;
  background: var(--night);
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 16% 26%, rgba(227,59,53,.20), transparent 30%),
    linear-gradient(90deg, rgba(8,13,22,.98), rgba(8,13,22,.88) 45%, rgba(8,13,22,.26)),
    url("/assets/brand/hero-generated.png") center/cover no-repeat;
  transform: scale(1.005);
}

.hero-inner {
  position: relative;
  min-height: 690px;
  display: grid;
  grid-template-columns: minmax(0, 700px) minmax(280px, 1fr);
  gap: 54px;
  align-items: center;
  padding: 84px 0 64px;
}

.eyebrow,
.section-kicker {
  color: var(--red);
  margin: 0 0 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
  font-size: 13px;
}

.hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(40px, 4.8vw, 66px);
  line-height: 1.08;
  letter-spacing: 0;
  white-space: pre-line;
}

.hero-text {
  margin: 24px 0 0;
  max-width: 690px;
  color: rgba(255,255,255,.84);
  font-size: 18px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.stat {
  min-height: 124px;
  padding: 22px;
  border-radius: 10px;
  background: rgba(17,31,44,.68);
  border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(12px);
}
.stat strong { display: block; font-size: 36px; line-height: 1.05; }
.stat span { color: rgba(255,255,255,.76); }

.section { padding: 88px 0; }
.muted-section { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.dark-section { background: var(--night); color: #fff; }
.contact-section { background: var(--night-2); color: #fff; }

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 34px;
}
.section-head h2,
.split h2,
.contact-section h2 {
  margin: 0;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}
.section-head p,
.section-copy {
  margin: 0;
  max-width: 560px;
  color: var(--muted);
}
.dark-section .section-head p,
.contact-section .section-copy { color: rgba(255,255,255,.74); }

.split {
  display: grid;
  grid-template-columns: 1fr .88fr;
  gap: 46px;
  align-items: center;
}
.about-image {
  width: 100%;
  aspect-ratio: 1.35 / 1;
  object-fit: cover;
  border-radius: 10px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.service-card,
.advantage-card,
.pain-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 24px;
}
.service-card {
  min-height: 230px;
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: "";
  position: absolute;
  right: -34px;
  top: -34px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: rgba(81,127,123,.08);
}
.service-card .icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: #fff;
  background: var(--teal);
  font-weight: 900;
  position: relative;
  z-index: 1;
}
h3 { margin: 18px 0 8px; font-size: 21px; line-height: 1.3; }
.service-card p,
.advantage-card p,
.pain-card p,
.timeline-item p { margin: 0; color: var(--muted); font-size: 14px; }

.scenario-band {
  padding: 64px 0;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(16,24,33,.96), rgba(16,24,33,.78)),
    url("/assets/brand/service-studio.png") center/cover no-repeat;
}

.scenarios {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 34px;
  align-items: center;
}

.scenarios h2 {
  margin: 0;
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.2;
}

.scenario-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.scenario-list span {
  min-height: 58px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.1);
  font-weight: 800;
}

.pain-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.pain-card h3 { color: var(--teal-dark); }

.advantage-card { min-height: 172px; }
.advantage-card strong {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: #fff;
  background: var(--gold);
  border-radius: 50%;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.timeline-item {
  min-height: 190px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 10px;
  background: rgba(255,255,255,.08);
}
.timeline-item span { color: var(--gold); font-weight: 900; }
.timeline-item p { color: rgba(255,255,255,.72); }

.studio-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.studio-grid img {
  width: 100%;
  aspect-ratio: 1.55 / 1;
  object-fit: cover;
  border-radius: 10px;
}
.partners-section { background: var(--soft); }
.partners-image {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 18px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.case-grid img {
  width: 100%;
  aspect-ratio: 1.38 / 1;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
}

.contact-layout {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 46px;
  align-items: start;
}
.contact-lines {
  display: grid;
  gap: 10px;
  margin-top: 28px;
  color: rgba(255,255,255,.88);
}
.lead-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 10px;
  background: rgba(255,255,255,.08);
}
.lead-form input,
.lead-form textarea {
  width: 100%;
  min-height: 48px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  padding: 0 14px;
  background: rgba(255,255,255,.96);
  color: var(--ink);
}
.lead-form textarea {
  grid-column: 1 / -1;
  min-height: 126px;
  padding-top: 12px;
  resize: vertical;
}
.lead-form button,
.form-note { grid-column: 1 / -1; }
.form-note { min-height: 24px; margin: 0; color: rgba(255,255,255,.82); }

.site-footer {
  padding: 24px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #fff;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.admin-body { background: var(--soft); }
.admin-shell { min-height: 100vh; display: grid; place-items: center; padding: 30px; }
.admin-panel {
  width: min(1080px, 100%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  box-shadow: 0 18px 55px rgba(16,24,33,.08);
}
.admin-panel h1 { margin: 0 0 18px; }
.login-form { display: grid; gap: 12px; max-width: 420px; }
.login-form input,
.admin-panel textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
}
.admin-panel textarea { min-height: 520px; font-family: Consolas, monospace; }
.admin-toolbar { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0; }
.lead-list { display: grid; gap: 10px; margin-top: 18px; }
.lead-item { padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--soft); }

@media (max-width: 980px) {
  .menu-button { display: block; }
  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 15px 20px; border-top: 1px solid var(--line); }
  .hero-inner,
  .split,
  .scenarios,
  .contact-layout { grid-template-columns: 1fr; }
  .service-grid,
  .pain-grid,
  .advantage-grid,
  .timeline,
  .studio-grid,
  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-head { display: block; }
}

@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1180px); }
  .hero,
  .hero-inner { min-height: auto; }
  .hero-inner { padding: 62px 0 46px; }
  .stats,
  .service-grid,
  .scenario-list,
  .pain-grid,
  .advantage-grid,
  .timeline,
  .studio-grid,
  .case-grid,
  .lead-form { grid-template-columns: 1fr; }
  .lead-form textarea,
  .lead-form button,
  .form-note { grid-column: auto; }
  .section { padding: 60px 0; }
  .brand span { display: none; }
}