/* 滇能融租 — 云南水电站融资租赁对接平台 */
/* Color: Deep Navy + Gold — Finance + Energy industry palette */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #0a1628;
  --navy-light: #0f1f38;
  --navy-mid: #142a4a;
  --navy-border: #1c3a5e;
  --gold: #d4a853;
  --gold-light: #e8c878;
  --gold-dark: #b08a3a;
  --gold-glow: rgba(212, 168, 83, 0.15);
  --gold-glow-strong: rgba(212, 168, 83, 0.25);
  --blue-accent: #2d7dd2;
  --text: #e8edf4;
  --text-muted: #8a9bb5;
  --text-dim: #4a6080;
  --green: #34d399;
  --white: #ffffff;
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.4);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.2);
  --radius: 12px;
  --radius-sm: 8px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--navy);
  color: var(--text);
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-accent), #1a5fa8);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(45, 125, 210, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45, 125, 210, 0.4);
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--navy);
  box-shadow: 0 4px 16px rgba(212, 168, 83, 0.3);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 168, 83, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--gold);
  color: var(--gold);
}
.btn-outline:hover {
  background: var(--gold-glow);
}

.btn-lg { padding: 1rem 2.25rem; font-size: 1.05rem; border-radius: var(--radius); }
.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.85rem; }

/* ========== NAVIGATION ========== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--navy-border);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.875rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-icon { font-size: 1.3rem; }
.logo-name {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--gold);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
  font-weight: 500;
}
.nav-links a:hover { color: var(--gold); }

.nav-actions { display: flex; gap: 0.75rem; }

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-mobile-menu {
  display: none;
  flex-direction: column;
  padding: 1rem 2rem 1.5rem;
  gap: 0.75rem;
  background: var(--navy-light);
  border-bottom: 1px solid var(--navy-border);
}
.nav-mobile-menu a {
  font-size: 1rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
}
.nav-mobile-menu a:hover { color: var(--gold); }
.nav-mobile-menu.open { display: flex; }
.nav-mobile-actions { display: flex; gap: 0.75rem; margin-top: 0.5rem; }

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6rem 2rem 5rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 22, 40, 0.80) 0%,
    rgba(10, 22, 40, 0.92) 50%,
    rgba(10, 22, 40, 0.98) 100%
  );
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--gold);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--gold);
  font-weight: 500;
  letter-spacing: 0.15em;
  margin-bottom: 2rem;
  background: var(--gold-glow);
}

.hero-headline {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 2.5rem;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-trust {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.trust-item {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.trust-check { color: var(--green); font-weight: 700; }

/* ========== SECTION COMMON ========== */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 1rem;
  padding: 0.35rem 1rem;
  border: 1px solid rgba(212, 168, 83, 0.3);
  border-radius: 100px;
  background: var(--gold-glow);
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ========== BUSINESS MODES ========== */
.business-modes {
  padding: 5rem 0;
  background: var(--navy-light);
}

.modes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.mode-card {
  background: var(--navy);
  border: 1px solid var(--navy-border);
  border-radius: var(--radius);
  padding: 2.5rem;
  transition: border-color 0.3s;
}
.mode-card:hover { border-color: var(--gold-dark); }

.mode-header {
  margin-bottom: 2rem;
}

.mode-icon { font-size: 2rem; margin-bottom: 0.75rem; }

.mode-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.mode-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--gold-glow);
  color: var(--gold);
  border: 1px solid rgba(212, 168, 83, 0.25);
}

.mode-flow {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1;
  min-width: 0;
  background: var(--navy-mid);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-align: center;
}

.flow-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--navy);
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.5rem;
}

.flow-step p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.flow-arrow {
  display: flex;
  align-items: center;
  color: var(--gold);
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
}

.mode-details {
  display: grid;
  gap: 1rem;
}

.mode-detail {
  padding: 1rem 1.25rem;
  background: var(--navy-mid);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--gold);
}

.mode-detail strong {
  display: block;
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: 0.3rem;
}

.mode-detail p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ========== STATS ========== */
.stats {
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--navy-mid), var(--navy));
  border-top: 1px solid var(--navy-border);
  border-bottom: 1px solid var(--navy-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.stat-value {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-unit {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gold-light);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.stat-bar {
  height: 4px;
  background: var(--navy-border);
  border-radius: 2px;
  overflow: hidden;
  max-width: 120px;
  margin: 0 auto;
}

.stat-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dark), var(--gold));
  border-radius: 2px;
}

/* ========== PROCESS ========== */
.process {
  padding: 5rem 0;
  background: var(--navy);
}

.process-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
}

.process-step {
  flex: 0 0 calc(16.66% - 1.5rem);
  text-align: center;
  padding: 1.5rem 0.75rem;
}

.process-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--gold-dark);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.process-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.process-step h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.process-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 1.2rem;
  padding-top: 3.5rem;
  flex-shrink: 0;
}

/* ========== REQUIREMENTS ========== */
.requirements {
  padding: 5rem 0;
  background: var(--navy-light);
}

.req-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.req-card {
  background: var(--navy);
  border: 1px solid var(--navy-border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s;
}
.req-card:hover {
  border-color: var(--gold-dark);
  transform: translateY(-3px);
}

.req-card-wide {
  grid-column: span 4;
  max-width: 400px;
  justify-self: center;
}

.req-icon { font-size: 2rem; margin-bottom: 1rem; }

.req-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--gold-light);
}

.req-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========== PARTNERS ========== */
.partners {
  padding: 5rem 0;
  background: var(--navy);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.partner-card {
  background: var(--navy-light);
  border: 1px solid var(--navy-border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: border-color 0.3s;
}
.partner-card:hover { border-color: var(--gold-dark); }

.partner-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.partner-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.partners-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
  font-style: italic;
}

/* ========== ABOUT ========== */
.about {
  padding: 5rem 0;
  background: linear-gradient(180deg, var(--navy-light), var(--navy-mid));
}

.about-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.about-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 2;
  margin-bottom: 2.5rem;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--text);
  justify-content: center;
}

.about-check {
  color: var(--green);
  font-weight: 700;
  font-size: 1.1rem;
}

.about-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== FOOTER ========== */
.footer {
  border-top: 1px solid var(--navy-border);
  padding: 4rem 2rem 2rem;
  background: var(--navy);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-logo {
  font-weight: 700;
  font-size: 1.1rem;
  display: block;
  margin-bottom: 0.75rem;
  color: var(--gold);
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 360px;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-item {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links { display: flex; gap: 4rem; }

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.footer-col a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--gold); }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--navy-border);
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .process-step { flex: 0 0 calc(33.33% - 1.5rem); }
  .process-connector { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .req-grid { grid-template-columns: repeat(2, 1fr); }
  .req-card-wide { grid-column: span 2; }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-actions { display: none; }
  .nav-mobile-toggle { display: flex; }

  .hero { min-height: auto; padding: 4rem 1.5rem 3.5rem; }
  .hero-headline { font-size: clamp(1.8rem, 6vw, 2.4rem); }
  .hero-ctas { flex-direction: column; align-items: center; }
  .hero-trust { flex-direction: column; align-items: center; gap: 0.75rem; }

  .modes-grid { grid-template-columns: 1fr; }
  .mode-flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); justify-content: center; }

  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .about-features { grid-template-columns: 1fr; }

  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-links { gap: 2rem; }
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr; }
  .req-grid { grid-template-columns: 1fr; }
  .req-card-wide { grid-column: span 1; }
  .partners-grid { grid-template-columns: 1fr; }
  .process-step { flex: 0 0 100%; }
  .section-inner { padding: 0 1rem; }
  .btn-lg { padding: 0.875rem 1.5rem; font-size: 0.95rem; }
}