/* ==========================================================================
   Kunming Ouxiang Trading Co., Ltd. — Homepage stylesheet
   Dark theme · Electric Violet / Rose accent
   ========================================================================== */

:root {
  --bg: #0A0C14;
  --bg-soft: #10131F;
  --bg-raise: #161A2B;
  --bg-panel: #1B2034;
  --line: #262C42;
  --line-soft: #1E2335;

  --text: #E8EAED;
  --text-muted: #A6ADBF;
  --text-dim: #7C8398;

  --accent: #7C5CFF;
  --accent-bright: #9B7BFF;
  --accent-deep: #5B3FD6;
  --rose: #FF5C8A;
  --rose-soft: #FF8FB0;

  --font-display: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 24px 60px -18px rgba(0, 0, 0, 0.55);
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-size: 16px;
  font-family: var(--font-body);
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 10px 0;
  z-index: 300;
}
.skip-link:focus {
  left: 0;
}

/* ---------- Typography helpers ---------- */
.section-kicker {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
}
.section-lede {
  margin-top: 16px;
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 620px;
}
.section-head {
  margin-bottom: 44px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.btn-primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 14px 34px -12px rgba(124, 92, 255, 0.65);
}
.btn-primary:hover {
  background: var(--accent-bright);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-bright);
}
.btn-block {
  width: 100%;
}

/* ---------- Top bar (class-scoped, never bare nav) ---------- */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: var(--bg);
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
.topbar.scrolled {
  background: #0A0C14;
  box-shadow: 0 12px 30px -18px rgba(0, 0, 0, 0.8);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--rose) 100%);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}
.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand-dot {
  color: var(--rose);
}

/* Hamburger */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 0 11px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  z-index: 260;
}
.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.active .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Fullscreen overlay nav ---------- */
.overlay-nav {
  position: fixed;
  inset: 0;
  z-index: 250;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.overlay-nav.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.overlay-nav-inner {
  text-align: center;
  padding: 40px 24px;
}
.overlay-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.overlay-link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  padding: 8px 16px;
  border-radius: 12px;
  transition: color 0.2s ease, background-color 0.2s ease;
}
.overlay-link:hover {
  color: var(--accent-bright);
  background: var(--bg-soft);
}
.overlay-nav-meta {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--text-dim);
  font-size: 0.95rem;
}

/* ---------- Hero ---------- */
.hero-section {
  position: relative;
  padding: 150px 0 90px;
  background: var(--bg);
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 35, 53, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 35, 53, 0.5) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-orb-a {
  width: 520px;
  height: 520px;
  top: -140px;
  left: -120px;
  background: var(--accent-deep);
}
.hero-orb-b {
  width: 420px;
  height: 420px;
  top: 60px;
  right: -120px;
  background: var(--rose);
}
.hero-container {
  position: relative;
  text-align: center;
}
.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-bright);
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-soft);
  margin-bottom: 26px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.3rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text);
  max-width: 980px;
  margin: 0 auto;
}
.hero-lede {
  margin: 26px auto 0;
  max-width: 720px;
  font-size: 1.16rem;
  color: var(--text-muted);
}
.hero-actions {
  margin-top: 34px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Floating stat card cluster */
.hero-stats {
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 980px;
  margin-left: auto;
  margin-right: auto;
}
.stat-card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.stat-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}
.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------- Statement row ---------- */
.statement-section {
  padding: 80px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.statement-lead {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 880px;
}
.statement-lead em {
  font-style: normal;
  color: var(--accent-bright);
}
.statement-sub {
  margin-top: 18px;
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* ---------- Services (numbered rows) ---------- */
.services-section {
  padding: 100px 0;
  background: var(--bg);
}
.service-list {
  list-style: none;
  border-top: 1px solid var(--line-soft);
}
.service-row {
  display: grid;
  grid-template-columns: 90px 1fr 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 30px 8px;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.25s ease;
}
.service-row:hover {
  background: var(--bg-soft);
}
.service-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.service-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}
.service-desc {
  color: var(--text-muted);
  font-size: 0.98rem;
}
.service-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-bright);
  background: var(--bg-panel);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  margin-left: 6px;
}

/* ---------- Comparison table ---------- */
.compare-section {
  padding: 100px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.compare-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--bg);
  box-shadow: var(--shadow);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}
.compare-table th,
.compare-table td {
  padding: 20px 24px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.98rem;
}
.compare-table thead th {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text);
  background: var(--bg-raise);
}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
  border-bottom: none;
}
.compare-table tbody th {
  font-weight: 600;
  color: var(--text);
}
.compare-table td {
  color: var(--text-muted);
}
.compare-highlight-col {
  background: rgba(124, 92, 255, 0.08);
  color: var(--text) !important;
  font-weight: 600;
}
.compare-table thead .compare-highlight-col {
  color: var(--accent-bright) !important;
}

/* ---------- Bento capabilities ---------- */
.bento-section {
  padding: 100px 0;
  background: var(--bg);
}
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.bento-card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.bento-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}
.bento-wide {
  grid-column: span 2;
}
.bento-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.bento-desc {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* ---------- About (alternating two column) ---------- */
.about-section {
  padding: 100px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.about-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text {
  color: var(--text-muted);
  margin-top: 18px;
  font-size: 1.02rem;
}
.about-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-panel {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.about-panel-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--rose);
  line-height: 1;
}
.about-panel-text {
  color: var(--text);
  font-size: 0.96rem;
}

/* ---------- Timeline / process ---------- */
.process-section {
  padding: 100px 0;
  background: var(--bg);
}
.timeline {
  list-style: none;
  position: relative;
  max-width: 820px;
  margin: 0 auto;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--line);
}
.timeline-item {
  position: relative;
  display: flex;
  gap: 26px;
  padding: 20px 0;
}
.timeline-marker {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 4px solid var(--bg);
  z-index: 1;
}
.timeline-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
}
.timeline-desc {
  margin-top: 6px;
  color: var(--text-muted);
}

/* ---------- Contact ---------- */
.contact-section {
  padding: 100px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact-text {
  margin-top: 18px;
  color: var(--text-muted);
}
.contact-list {
  list-style: none;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.contact-value {
  color: var(--text);
  font-size: 1.02rem;
}
a.contact-value:hover {
  color: var(--accent-bright);
}

.contact-form {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-field {
  display: block;
  margin-bottom: 18px;
}
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.98rem;
  transition: border-color 0.2s ease;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--text-dim);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}
.form-note {
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--accent-bright);
  min-height: 1.4em;
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: var(--bg);
  padding: 90px 0 0;
  overflow: hidden;
  border-top: 1px solid var(--line-soft);
}
.footer-watermark {
  position: absolute;
  left: -20px;
  bottom: -40px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(8rem, 22vw, 18rem);
  line-height: 1;
  color: var(--bg-soft);
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
}
.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 60px;
}
.footer-brand {
  margin-bottom: 16px;
}
.footer-blurb {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 320px;
}
.footer-heading {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--accent-bright);
}
.footer-bottom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid var(--line-soft);
  padding: 26px 32px;
  color: var(--text-dim);
  font-size: 0.88rem;
}
.footer-bottom-links {
  display: flex;
  gap: 22px;
}
.footer-bottom-links a:hover {
  color: var(--accent-bright);
}

/* ---------- Scroll reveal (safe without JS) ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .service-row {
    grid-template-columns: 70px 1fr;
    grid-template-areas:
      "num title"
      "num desc"
      "num tags";
    gap: 8px 20px;
  }
  .service-num { grid-area: num; }
  .service-title { grid-area: title; }
  .service-desc { grid-area: desc; }
  .service-tag { grid-area: tags; margin: 6px 6px 0 0; }

  .bento-grid { grid-template-columns: 1fr 1fr; }
  .bento-wide { grid-column: span 2; }

  .about-row { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .topbar { padding: 14px 20px; }
  .hero-section { padding: 120px 0 70px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 20px 14px; }
  .stat-value { font-size: 1.7rem; }

  .service-row { grid-template-columns: 1fr; grid-template-areas: "num" "title" "desc" "tags"; }
  .bento-grid { grid-template-columns: 1fr; }
  .bento-wide { grid-column: span 1; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .container { padding: 0 20px; }
}