:root {
  --bg: #06110d;
  --bg-soft: rgba(10, 24, 19, 0.82);
  --panel: rgba(11, 22, 18, 0.88);
  --panel-strong: rgba(13, 27, 22, 0.96);
  --line: rgba(131, 233, 170, 0.14);
  --line-strong: rgba(131, 233, 170, 0.26);
  --text: #edf5ef;
  --text-soft: rgba(237, 245, 239, 0.72);
  --title: #ffffff;
  --accent: #6cf0a9;
  --accent-strong: #20c874;
  --accent-deep: #0c5b37;
  --glow: rgba(103, 255, 180, 0.22);
  --warning: #ffd15c;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  --radius-xl: 5px;
  --radius-lg: 5px;
  --radius-md: 5px;
  --radius-sm: 5px;
  --container: min(1180px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(111, 255, 186, 0.2), transparent 30%),
    radial-gradient(circle at 85% 10%, rgba(255, 170, 46, 0.14), transparent 22%),
    linear-gradient(180deg, #081712 0%, #050b09 55%, #030605 100%);
  min-height: 100vh;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  pointer-events: none;
  z-index: -1;
  filter: blur(80px);
}

body::before {
  width: 280px;
  height: 280px;
  left: -80px;
  top: 20vh;
  background: rgba(46, 219, 128, 0.16);
}

body::after {
  width: 240px;
  height: 240px;
  right: -40px;
  top: 60vh;
  background: rgba(255, 145, 0, 0.12);
}

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

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

button {
  font: inherit;
}

.site-shell {
  width: var(--container);
  margin: 0 auto;
  padding-bottom: 40px;
}

.section {
  position: relative;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100vw;
  min-height: 48px;
  margin: 0 0 0 calc(50% - 50vw);
  padding: 6px 28px;
  border-top: 0;
  border-right: 0;
  border-bottom: 1px solid rgba(131, 233, 170, 0.12);
  border-left: 0;
  border-radius: 0;
  background: rgba(5, 11, 9, 0.94);
  backdrop-filter: blur(18px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand-logo {
  width: min(132px, 22vw);
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
}

.nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 0;
  color: var(--text-soft);
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1;
  transition: color 0.25s ease, opacity 0.25s ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--text);
}

.nav-cta {
  min-height: 24px;
  padding: 0;
  border: 0;
  border-radius: 0;
  color: var(--accent) !important;
  font-weight: 700;
  background: transparent;
  box-shadow: none;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 0;
  color: var(--text);
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  width: 14px;
  height: 2px;
  border-radius: 0;
  background: currentColor;
}

.hero {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: 44px;
  min-height: calc(100vh - 130px);
  padding: 76px 0 34px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 100%);
}

.hero h1,
.section-heading h2,
.split-copy h2,
.contact-card h2 {
  margin: 0;
  color: var(--title);
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.hero h1 {
  max-width: 13ch;
  font-size: clamp(2.2rem, 4.8vw, 4.35rem);
}

.hero-text,
.section-heading p,
.split-copy p,
.contact-card p,
.about-brand p,
.feature-card p,
.module-card p,
.metric-card p,
.timeline-item p,
.trust-strip p,
.about-points p {
  color: var(--text-soft);
  line-height: 1.8;
}

.hero-text {
  max-width: 640px;
  margin: 24px 0 0;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 26px;
  border-radius: 999px;
  font-weight: 700;
  transition:
    transform 0.24s ease,
    box-shadow 0.24s ease,
    border-color 0.24s ease,
    background 0.24s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  color: #042612;
  background: linear-gradient(135deg, #9bffcb 0%, var(--accent-strong) 100%);
  box-shadow: 0 22px 40px rgba(44, 212, 124, 0.24);
}

.btn-secondary {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.24);
  border-color: rgba(131, 233, 170, 0.38);
}

.btn-large {
  min-width: 220px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.025);
  color: #dff8e8;
  font-size: 0.95rem;
}

.hero-visual {
  position: relative;
  min-height: 620px;
}

.visual-card,
.feature-card,
.metric-card,
.module-card,
.timeline-card,
.about-panel,
.contact-card,
.trust-strip article {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.visual-main {
  position: absolute;
  inset: 48px 18px 60px 18px;
  padding: 28px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(14, 34, 27, 0.96), rgba(10, 20, 16, 0.92)),
    linear-gradient(135deg, rgba(108, 240, 169, 0.08), transparent 55%);
  overflow: hidden;
}

.visual-main::before {
  content: "";
  position: absolute;
  inset: auto -60px -100px auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 240, 169, 0.28) 0%, transparent 68%);
}

.visual-header {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 18px;
}

.visual-header h2 {
  margin: 6px 0 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.visual-label {
  margin: 0;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.visual-icon {
  width: 78px;
  height: 78px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.22);
  padding: 8px;
}

.visual-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.visual-grid article {
  padding: 22px 20px;
  border: 1px solid rgba(131, 233, 170, 0.12);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
}

.visual-grid span,
.metric-card span,
.module-card span {
  display: block;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.visual-grid strong,
.metric-card strong {
  font-size: 1.05rem;
  line-height: 1.5;
}

.floating-note {
  position: absolute;
  max-width: 260px;
  padding: 18px 18px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background: rgba(5, 14, 11, 0.88);
  box-shadow: 0 18px 30px rgba(0, 0, 0, 0.24);
}

.floating-note span {
  display: block;
  margin-bottom: 8px;
  color: var(--warning);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.floating-note strong {
  line-height: 1.6;
}

.note-top {
  top: 0;
  right: 0;
}

.note-bottom {
  bottom: 0;
  left: 0;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding-top: 10px;
}

.trust-strip article {
  padding: 28px;
  border-radius: var(--radius-lg);
}

.trust-strip strong,
.feature-card h3,
.module-card h3,
.about-points h3,
.timeline-item h3 {
  color: var(--title);
}

.trust-strip strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 12px;
}

.section-grid,
.split-section {
  padding-top: 120px;
}

.section-heading {
  display: grid;
  gap: 18px;
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.narrow {
  max-width: 700px;
}

.section-heading h2,
.split-copy h2,
.contact-card h2 {
  font-size: clamp(2rem, 4.1vw, 3.4rem);
}

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

.feature-card,
.module-card {
  padding: 28px;
  border-radius: var(--radius-lg);
}

.feature-card.highlight,
.module-card.accent {
  border-color: rgba(108, 240, 169, 0.32);
  background:
    linear-gradient(180deg, rgba(17, 40, 31, 0.96), rgba(11, 24, 19, 0.92)),
    radial-gradient(circle at top right, rgba(108, 240, 169, 0.14), transparent 48%);
}

.metrics-panel {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding-top: 24px;
}

.metric-card {
  padding: 24px;
  border-radius: 22px;
}

.metric-card strong {
  display: block;
  font-size: 1.45rem;
  margin-bottom: 12px;
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

.check-list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 16px;
  color: var(--text-soft);
  line-height: 1.7;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, #c4ffde 100%);
  box-shadow: 0 0 0 6px rgba(108, 240, 169, 0.12);
}

.timeline-card {
  display: grid;
  gap: 18px;
  padding: 28px;
  border-radius: var(--radius-xl);
}

.timeline-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.timeline-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.timeline-item span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 20px;
  color: #032512;
  font-weight: 800;
  background: linear-gradient(135deg, #b7ffd8 0%, var(--accent-strong) 100%);
}

.timeline-item h3 {
  margin: 0 0 10px;
}

.timeline-item p {
  margin: 0;
}

.about-panel {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 24px;
  margin-top: 120px;
  padding: 30px;
  border-radius: var(--radius-xl);
}

.about-brand {
  display: grid;
  gap: 24px;
  align-content: start;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.02);
}

.about-brand img {
  width: min(320px, 100%);
}

.about-points {
  display: grid;
  gap: 18px;
}

.about-points article {
  padding: 22px 24px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.02);
}

.about-points h3 {
  margin: 0 0 10px;
}

.about-points p {
  margin: 0;
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 120px;
  padding: 38px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(15, 36, 28, 0.95), rgba(10, 21, 17, 0.96)),
    radial-gradient(circle at top right, rgba(108, 240, 169, 0.18), transparent 38%);
}

.contact-card > div {
  max-width: 760px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 34px 4px 10px;
  color: rgba(237, 245, 239, 0.56);
  font-size: 0.92rem;
}

.footer p {
  margin: 0;
}

@media (max-width: 1100px) {
  .hero,
  .split-section,
  .about-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    width: 100%;
    height: auto;
    padding-top: 56px;
  }

  .hero h1 {
    max-width: 100%;
  }

  .hero-visual {
    min-height: 560px;
  }

  .contact-card {
    flex-direction: column;
    align-items: flex-start;
  }

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

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

@media (max-width: 820px) {
  .site-shell {
    width: min(100vw - 24px, 1180px);
  }

  .topbar {
    gap: 10px;
    min-height: 42px;
    padding: 6px 14px;
  }

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

  .nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 14px 12px;
    border-top: 0;
    border-right: 0;
    border-bottom: 1px solid rgba(131, 233, 170, 0.12);
    border-left: 0;
    border-radius: 0;
    background: rgba(5, 11, 9, 0.98);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.18);
  }

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

  .nav a {
    justify-content: flex-start;
    min-height: 34px;
    padding: 0;
  }

  .nav-cta {
    justify-content: flex-start !important;
    text-align: left;
    min-height: 34px;
    padding: 0 !important;
  }

  .trust-strip,
  .feature-grid,
  .module-grid,
  .metrics-panel,
  .footer {
    grid-template-columns: 1fr;
  }

  .footer {
    display: grid;
  }

  .visual-main {
    inset: 38px 0 70px;
    padding: 24px;
  }

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

  .floating-note {
    position: static;
    max-width: none;
    margin-top: 14px;
  }

  .hero-visual {
    min-height: auto;
    display: grid;
  }

  .contact-card {
    padding: 28px;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-top: 42px;
  }

  .hero h1 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .section-grid,
  .split-section {
    padding-top: 92px;
  }

  .about-panel,
  .contact-card {
    margin-top: 92px;
  }

  .brand-logo {
    width: min(110px, 38vw);
  }

  .visual-header {
    align-items: flex-start;
  }

  .visual-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
  }

  .timeline-item {
    grid-template-columns: 52px 1fr;
  }

  .timeline-item span {
    width: 48px;
    height: 48px;
    border-radius: 16px;
  }

  .btn,
  .btn-large {
    width: 100%;
  }
}

/* 顶部导航强制覆盖，确保真正生效 */
.topbar,
.topbar .nav,
.topbar .nav a,
.topbar .nav-cta,
.topbar .nav-toggle,
.topbar .nav-toggle span {
  border-radius: 0 !important;
}

.topbar {
  width: 100vw !important;
  min-height: 48px !important;
  margin: 0 0 0 calc(50% - 50vw) !important;
  padding: 6px 28px !important;
}

.topbar .brand-logo {
  width: min(132px, 22vw) !important;
}

.topbar .nav {
  gap: 18px !important;
}

.topbar .nav a,
.topbar .nav .nav-cta {
  min-height: 24px !important;
  padding: 0 !important;
}

@media (max-width: 820px) {
  .topbar {
    min-height: 42px !important;
    padding: 6px 14px !important;
  }

  .topbar .nav {
    border-radius: 0 !important;
  }
}

@media (max-width: 560px) {
  .topbar .brand-logo {
    width: min(110px, 38vw) !important;
  }
}