/* 外贸通话翻译官 — 独立浅色编辑风（不依赖 styles.css） */

@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Outfit:wght@500;600;700&display=swap");

:root {
  --vt-paper: #f6f3ee;
  --vt-paper-2: #ebe6dc;
  --vt-ink: #1c1917;
  --vt-ink-muted: #57534e;
  --vt-ink-soft: #78716c;
  --vt-coral: #c2410c;
  --vt-coral-light: #fff7ed;
  --vt-teal: #0f766e;
  --vt-teal-light: #ecfdf5;
  --vt-border: rgba(28, 25, 23, 0.1);
  --vt-shadow: 0 4px 24px rgba(28, 25, 23, 0.06);
  --vt-shadow-lg: 0 24px 64px rgba(28, 25, 23, 0.1);
  --vt-radius: 16px;
  --vt-radius-lg: 24px;
  --vt-font: "Noto Sans SC", system-ui, sans-serif;
  --vt-display: "Outfit", "Noto Sans SC", sans-serif;
  --vt-header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body.vt-body {
  font-family: var(--vt-font);
  background: var(--vt-paper);
  color: var(--vt-ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

.vt-container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ----- Header ----- */
.vt-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--vt-header-h);
  background: rgba(246, 243, 238, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--vt-border);
}

.vt-header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.vt-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--vt-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.vt-brand-mark {
  width: 36px;
  height: 36px;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}

.vt-nav {
  display: flex;
  align-items: center;
  gap: 6px 20px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.vt-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--vt-ink-muted);
  transition: color 0.15s;
}

.vt-nav a:hover {
  color: var(--vt-coral);
}

.vt-nav-ghost {
  color: var(--vt-ink-soft) !important;
  font-size: 13px !important;
}

.vt-btn-nav {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  background: var(--vt-ink);
  color: #fafaf9;
  transition: transform 0.12s, box-shadow 0.15s;
}

.vt-btn-nav:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(28, 25, 23, 0.2);
}

.vt-nav-toggle {
  display: none;
  flex-shrink: 0;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  margin-left: auto;
  border: 1px solid var(--vt-border);
  border-radius: 10px;
  background: var(--vt-paper);
  color: var(--vt-ink);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.vt-nav-toggle:hover {
  border-color: rgba(28, 25, 23, 0.2);
  background: #fff;
}

.vt-nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.vt-header.is-nav-open .vt-nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.vt-header.is-nav-open .vt-nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.vt-header.is-nav-open .vt-nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ----- Hero ----- */
.vt-hero {
  padding: calc(var(--vt-header-h) + 48px) 0 80px;
  position: relative;
  overflow: hidden;
}

.vt-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(15, 118, 110, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.vt-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--vt-border), transparent);
}

.vt-hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

@media (min-width: 960px) {
  .vt-hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
}

.vt-hero-media,
.vt-interface-shot {
  margin: 0;
  display: flex;
  justify-content: center;
  width: 100%;
}

.vt-hero-media img,
.vt-interface-shot img {
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
}

.vt-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--vt-teal);
  background: var(--vt-teal-light);
  border: 1px solid rgba(15, 118, 110, 0.2);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.vt-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--vt-teal);
  animation: vt-pulse 2s ease infinite;
}

@keyframes vt-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.vt-hero h1 {
  font-family: var(--vt-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--vt-ink);
  margin-bottom: 20px;
}

.vt-hero h1 em {
  font-style: normal;
  color: var(--vt-coral);
}

.vt-hero-lead {
  font-size: 17px;
  color: var(--vt-ink-muted);
  max-width: 600px;
  margin-bottom: 28px;
}

.vt-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.vt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.15s, background 0.15s;
}

.vt-btn-primary {
  background: var(--vt-coral);
  color: #fff;
  box-shadow: 0 8px 28px rgba(194, 65, 12, 0.35);
}

.vt-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(194, 65, 12, 0.45);
}

.vt-btn-secondary {
  background: #fff;
  color: var(--vt-ink);
  border: 1.5px solid var(--vt-border);
  box-shadow: var(--vt-shadow);
}

.vt-btn-secondary:hover {
  border-color: var(--vt-teal);
  color: var(--vt-teal);
  transform: translateY(-2px);
}

.vt-btn-outline-dark {
  background: transparent;
  color: var(--vt-ink);
  border: 1.5px solid var(--vt-ink);
}

.vt-btn-outline-dark:hover {
  background: var(--vt-ink);
  color: #fff;
}

.vt-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.vt-tag {
  font-size: 13px;
  color: var(--vt-ink-soft);
  padding: 6px 12px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--vt-border);
}

/* ----- Sections ----- */
.vt-section {
  padding: 88px 0;
  scroll-margin-top: var(--vt-header-h);
}

.vt-section--alt {
  background: #fff;
  border-top: 1px solid var(--vt-border);
  border-bottom: 1px solid var(--vt-border);
}

.vt-section--dark {
  background: var(--vt-ink);
  color: #e7e5e4;
}

.vt-section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.vt-section-head h2 {
  font-family: var(--vt-display);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.vt-section-head p {
  color: var(--vt-ink-muted);
  font-size: 16px;
}

.vt-section--dark .vt-section-head p {
  color: #a8a29e;
}

.vt-section--dark .vt-section-head h2 {
  color: #fafaf9;
}

/* Bento features */
.vt-bento {
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .vt-bento {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
  }
  .vt-bento-item--wide {
    grid-column: span 2;
  }
}

.vt-bento-item {
  background: #fff;
  border: 1px solid var(--vt-border);
  border-radius: var(--vt-radius);
  padding: 28px;
  box-shadow: var(--vt-shadow);
  transition: box-shadow 0.2s, transform 0.2s;
}

.vt-bento-item:hover {
  box-shadow: var(--vt-shadow-lg);
  transform: translateY(-2px);
}

.vt-bento-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}

.vt-bento-icon--coral {
  background: var(--vt-coral-light);
}
.vt-bento-icon--teal {
  background: var(--vt-teal-light);
}
.vt-bento-icon--ink {
  background: #f5f5f4;
}

.vt-bento-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.vt-bento-item p {
  font-size: 14px;
  color: var(--vt-ink-muted);
  margin-bottom: 12px;
}

.vt-bento-item ul {
  font-size: 13px;
  color: var(--vt-ink-soft);
  padding-left: 18px;
}

.vt-bento-item li + li {
  margin-top: 4px;
}

/* Flow timeline */
.vt-flow {
  display: grid;
  gap: 24px;
}

@media (min-width: 768px) {
  .vt-flow {
    grid-template-columns: 1fr 1fr;
  }
}

.vt-flow-col {
  background: var(--vt-paper);
  border: 1px solid var(--vt-border);
  border-radius: var(--vt-radius-lg);
  padding: 32px;
  position: relative;
}

.vt-flow-col h3 {
  font-family: var(--vt-display);
  font-size: 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.vt-flow-col h3 span {
  font-size: 28px;
}

.vt-steps {
  list-style: none;
  counter-reset: vtstep;
}

.vt-steps li {
  position: relative;
  padding-left: 44px;
  margin-bottom: 20px;
  font-size: 15px;
  color: var(--vt-ink-muted);
}

.vt-steps li:last-child {
  margin-bottom: 0;
}

.vt-steps li::before {
  counter-increment: vtstep;
  content: counter(vtstep);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--vt-ink);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--vt-display);
}

.vt-flow-col--out .vt-steps li::before {
  background: var(--vt-coral);
}

.vt-flow-col--in .vt-steps li::before {
  background: var(--vt-teal);
}

.vt-flow-note {
  margin-top: 32px;
  padding: 16px 20px;
  background: var(--vt-teal-light);
  border-radius: 12px;
  font-size: 14px;
  color: var(--vt-teal);
  border: 1px solid rgba(15, 118, 110, 0.15);
  text-align: center;
}

.vt-flow-note code {
  font-size: 12px;
  background: rgba(255, 255, 255, 0.7);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--vt-ink);
}

/* Download cards */
.vt-dl-single {
  max-width: 420px;
  margin: 0 auto 40px;
}

.vt-dl-grid {
  display: grid;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto 40px;
}

@media (min-width: 640px) {
  .vt-dl-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.vt-dl-card {
  background: #fff;
  border: 2px solid var(--vt-border);
  border-radius: var(--vt-radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
}

.vt-dl-card:hover {
  border-color: var(--vt-coral);
  transform: translateY(-4px);
}

.vt-dl-card--driver:hover {
  border-color: var(--vt-teal);
}

.vt-dl-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.vt-dl-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.vt-dl-card p {
  font-size: 14px;
  color: var(--vt-ink-muted);
  margin-bottom: 20px;
  min-height: 42px;
}

.vt-dl-card .vt-btn {
  width: 100%;
}

.vt-install-box {
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--vt-border);
  border-radius: var(--vt-radius);
  padding: 28px 32px;
}

.vt-install-box h3 {
  font-size: 17px;
  margin-bottom: 16px;
}

.vt-install-box ol {
  padding-left: 20px;
  color: var(--vt-ink-muted);
  font-size: 15px;
}

.vt-install-box li + li {
  margin-top: 10px;
}

.vt-install-box ol a {
  color: var(--vt-teal);
  text-decoration: underline;
}

.vt-install-box ol strong {
  color: var(--vt-ink);
  font-weight: 600;
}

.vt-install-shot {
  margin: 16px 0 0;
}

.vt-install-shot img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--vt-border);
  border-radius: var(--vt-radius);
}

.vt-install-box .vt-legal {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--vt-border);
  font-size: 12px;
  color: var(--vt-ink-soft);
  line-height: 1.6;
}

.vt-install-box .vt-legal a {
  color: var(--vt-teal);
  text-decoration: underline;
}

/* Pricing */
.vt-pricing {
  display: grid;
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}

@media (min-width: 600px) {
  .vt-pricing {
    grid-template-columns: 1fr 1fr;
  }
}

.vt-price-card {
  background: #fff;
  border-radius: var(--vt-radius-lg);
  padding: 32px;
  border: 1px solid var(--vt-border);
  position: relative;
  display: flex;
  flex-direction: column;
}

.vt-price-card--featured {
  border: 2px solid var(--vt-coral);
  box-shadow: var(--vt-shadow-lg);
}

.vt-price-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--vt-coral);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.vt-price-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--vt-ink-soft);
  margin-bottom: 8px;
}

.vt-price-amount {
  font-family: var(--vt-display);
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 4px;
}

.vt-price-unit {
  font-size: 14px;
  color: var(--vt-ink-soft);
  margin-bottom: 24px;
}

.vt-price-list {
  list-style: none;
  flex: 1;
  margin-bottom: 24px;
}

.vt-price-list li {
  font-size: 14px;
  color: var(--vt-ink-muted);
  padding: 8px 0;
  border-bottom: 1px solid var(--vt-border);
  padding-left: 22px;
  position: relative;
}

.vt-price-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--vt-teal);
  font-weight: 700;
}

.vt-price-card .vt-btn {
  width: 100%;
}

/* Scenarios */
.vt-scenarios {
  display: grid;
  gap: 16px;
}

@media (min-width: 640px) {
  .vt-scenarios {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .vt-scenarios {
    grid-template-columns: repeat(4, 1fr);
  }
}

.vt-scenario {
  background: var(--vt-paper);
  border: 1px solid var(--vt-border);
  border-radius: var(--vt-radius);
  padding: 24px;
  text-align: center;
}

.vt-section--alt .vt-scenario {
  background: var(--vt-paper);
}

.vt-scenario-emoji {
  font-size: 32px;
  margin-bottom: 12px;
}

.vt-scenario h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
}

.vt-scenario p {
  font-size: 13px;
  color: var(--vt-ink-muted);
  line-height: 1.5;
}

/* FAQ */
.vt-faq {
  max-width: 720px;
  margin: 0 auto;
}

.vt-faq-item {
  background: #fff;
  border: 1px solid var(--vt-border);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
}

.vt-section--dark .vt-faq-item {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}

.vt-faq-item summary {
  padding: 18px 22px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.vt-faq-item summary::-webkit-details-marker {
  display: none;
}

.vt-faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--vt-coral);
  flex-shrink: 0;
}

.vt-faq-item[open] summary::after {
  content: "−";
}

.vt-section--dark .vt-faq-item summary {
  color: #fafaf9;
}

.vt-faq-item p {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--vt-ink-muted);
  line-height: 1.7;
}

.vt-section--dark .vt-faq-item p {
  color: #a8a29e;
}

.vt-faq-item code {
  font-size: 12px;
  background: var(--vt-paper-2);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Footer */
.vt-footer {
  background: var(--vt-ink);
  color: #a8a29e;
  padding: 56px 0 24px;
}

.vt-footer-grid {
  display: grid;
  gap: 32px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .vt-footer-grid {
    grid-template-columns: 1.2fr 2fr;
  }
}

.vt-footer .vt-brand {
  color: #fafaf9;
  margin-bottom: 12px;
}

.vt-footer-desc {
  font-size: 14px;
  line-height: 1.6;
  max-width: 320px;
}

.vt-footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.vt-footer-links h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #78716c;
  margin-bottom: 12px;
}

.vt-footer-links a {
  display: block;
  font-size: 14px;
  color: #d6d3d1;
  margin-bottom: 8px;
  transition: color 0.15s;
}

.vt-footer-links a:hover {
  color: #fff;
}

.vt-footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 11px;
  color: #a8a29e;
}

.vt-footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.vt-footer-small {
  opacity: 0.8;
}

@media (max-width: 640px) {
  .vt-footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Modal */
.vt-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(28, 25, 23, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.vt-modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.vt-modal {
  background: #fff;
  border-radius: var(--vt-radius-lg);
  max-width: min(96vw, 100%);
  width: max-content;
  padding: 32px;
  position: relative;
  box-shadow: var(--vt-shadow-lg);
  transform: scale(0.96);
  transition: transform 0.2s;
}

.vt-modal-backdrop.is-open .vt-modal {
  transform: scale(1);
}

.vt-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--vt-paper);
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  color: var(--vt-ink-muted);
}

.vt-modal-close:hover {
  background: var(--vt-paper-2);
}

.vt-modal h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.vt-modal-sub {
  font-size: 14px;
  color: var(--vt-ink-muted);
  margin-bottom: 20px;
}

.vt-modal img {
  border-radius: 12px;
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Mobile nav */
@media (max-width: 720px) {
  .vt-nav-toggle {
    display: inline-flex;
  }

  .vt-nav {
    position: fixed;
    top: var(--vt-header-h);
    left: 0;
    right: 0;
    z-index: 99;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 16px;
    background: rgba(246, 243, 238, 0.98);
    border-bottom: 1px solid var(--vt-border);
    box-shadow: var(--vt-shadow-lg);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: max-height 0.28s ease, opacity 0.2s ease, visibility 0.2s ease;
  }

  .vt-header.is-nav-open .vt-nav {
    max-height: min(80vh, 480px);
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .vt-nav a,
  .vt-nav .vt-btn-nav {
    display: block;
    width: 100%;
    text-align: left;
    padding: 12px 4px;
    border-bottom: 1px solid var(--vt-border);
    border-radius: 0;
  }

  .vt-nav .vt-btn-nav {
    margin-top: 4px;
    text-align: center;
    border-radius: 999px;
    border-bottom: none;
  }

  .vt-nav a:last-of-type {
    border-bottom: none;
  }

  .vt-header-inner {
    flex-wrap: nowrap;
  }
}