/*
Theme Name: Qianlan B2B Starter
Theme URI: https://a.qianlan.cloud/
Author: OpenAI Codex
Description: A custom B2B corporate WordPress theme with a standardized multi-page structure, editable starter copy, and a built-in contact form.
Version: 1.1.0
Requires at least: 6.5
Tested up to: 6.9
Requires PHP: 8.0
Text Domain: qianlan-b2b-starter
*/

:root {
  --qb-bg: #eef2ed;
  --qb-bg-deep: #e0e8df;
  --qb-surface: rgba(255, 255, 255, 0.82);
  --qb-surface-strong: #ffffff;
  --qb-surface-muted: rgba(241, 245, 241, 0.82);
  --qb-text: #18201b;
  --qb-muted: #5d6861;
  --qb-muted-strong: #3e4942;
  --qb-line: rgba(24, 32, 27, 0.11);
  --qb-line-strong: rgba(24, 32, 27, 0.18);
  --qb-accent: #2d5a47;
  --qb-accent-deep: #19362b;
  --qb-accent-soft: #dce9e1;
  --qb-gold: #a88f56;
  --qb-shadow: 0 24px 64px rgba(24, 32, 27, 0.08);
  --qb-shadow-soft: 0 16px 44px rgba(24, 32, 27, 0.05);
  --qb-radius-xl: 34px;
  --qb-radius-lg: 26px;
  --qb-radius-md: 18px;
  --qb-radius-sm: 999px;
  --qb-width: 1240px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--qb-text);
  font-family: Georgia, "Times New Roman", "Noto Serif", serif;
  background:
    radial-gradient(circle at top left, rgba(168, 143, 86, 0.1), transparent 28%),
    radial-gradient(circle at right 18%, rgba(45, 90, 71, 0.1), transparent 24%),
    linear-gradient(180deg, #f8faf7 0%, var(--qb-bg) 54%, var(--qb-bg-deep) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(24, 32, 27, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 32, 27, 0.028) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.26), transparent 82%);
  pointer-events: none;
  z-index: -1;
}

a {
  color: var(--qb-accent);
}

img {
  max-width: 100%;
  height: auto;
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.site-shell {
  position: relative;
}

.site-header,
.site-main,
.site-footer-inner,
.qb-block {
  width: min(calc(100% - 40px), var(--qb-width));
  margin: 0 auto;
}

.site-header {
  padding: 24px 0 18px;
}

.site-header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.54);
  border-radius: var(--qb-radius-sm);
  background: rgba(255, 255, 255, 0.64);
  backdrop-filter: blur(20px);
  box-shadow: var(--qb-shadow-soft);
}

.site-branding {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.site-branding a {
  color: var(--qb-text);
  text-decoration: none;
}

.site-brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 16px;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  background: linear-gradient(135deg, var(--qb-accent) 0%, var(--qb-accent-deep) 100%);
}

.site-brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.site-title {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 1rem;
  font-weight: 700;
}

.site-tagline {
  color: var(--qb-muted);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  justify-content: center;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a,
.qb-footer-nav a,
.qb-card h3 a {
  color: var(--qb-muted-strong);
  text-decoration: none;
}

.site-nav a,
.qb-footer-nav a {
  position: relative;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
}

.site-nav a::after,
.qb-footer-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus::after,
.qb-footer-nav a:hover::after,
.qb-footer-nav a:focus::after {
  transform: scaleX(1);
}

.site-header-cta,
.qb-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 170px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: var(--qb-radius-sm);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-weight: 700;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.site-header-cta:hover,
.site-header-cta:focus,
.qb-button:hover,
.qb-button:focus {
  transform: translateY(-2px);
}

.site-header-cta,
.qb-button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--qb-accent) 0%, var(--qb-accent-deep) 100%);
  box-shadow: 0 16px 34px rgba(25, 54, 43, 0.18);
}

.qb-button-secondary {
  color: var(--qb-text);
  border-color: var(--qb-line-strong);
  background: rgba(255, 255, 255, 0.62);
}

.site-main {
  padding-bottom: 34px;
}

.page-content {
  display: block;
}

.entry-content > *:first-child {
  margin-top: 0;
}

.entry-content > *:last-child {
  margin-bottom: 0;
}

.qb-block {
  padding: 36px 0 18px;
}

.qb-section {
  padding: 56px 0;
}

.qb-heading-group {
  max-width: 820px;
}

.qb-eyebrow,
.qb-kicker,
.qb-step-label,
.qb-preview-label,
.qb-testimonial-role {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

.qb-eyebrow {
  margin: 0 0 16px;
  color: var(--qb-gold);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.qb-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--qb-radius-sm);
  background: rgba(255, 255, 255, 0.72);
  color: var(--qb-muted-strong);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.qb-heading-group h1,
.qb-heading-group h2,
.qb-page-hero h1,
.qb-card h3,
.qb-service-card h3,
.qb-preview-card h3,
.qb-footer-title,
.qb-note-panel h3,
.qb-faq-item h3 {
  margin: 0;
  letter-spacing: -0.04em;
  line-height: 1.04;
}

.qb-heading-group h1,
.qb-page-hero h1 {
  font-size: clamp(3.2rem, 6vw, 5.8rem);
}

.qb-heading-group h2 {
  font-size: clamp(2.1rem, 4vw, 3.7rem);
}

.qb-card h3,
.qb-service-card h3,
.qb-preview-card h3,
.qb-note-panel h3,
.qb-faq-item h3 {
  font-size: 1.5rem;
}

.qb-heading-group p,
.qb-copy,
.qb-card p,
.qb-service-card p,
.qb-preview-card p,
.qb-testimonial-card p,
.qb-note-panel p,
.qb-contact-form label,
.qb-contact-note,
.qb-footer-copy,
.qb-list li,
.qb-rich p,
.qb-metric-card span,
.qb-step span,
.qb-faq-item p {
  color: var(--qb-muted);
  line-height: 1.82;
}

.qb-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 28px;
  align-items: stretch;
  padding-top: 22px;
}

.qb-hero-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 8px 0;
}

.qb-hero-copy p {
  margin: 0;
}

.qb-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}

.qb-hero-panel,
.qb-card,
.qb-service-card,
.qb-preview-card,
.qb-testimonial-card,
.qb-contact-panel,
.qb-form-shell,
.qb-page-hero,
.qb-rich,
.qb-note-panel,
.qb-footer-shell,
.qb-hero-card {
  border: 1px solid rgba(255, 255, 255, 0.56);
  background: var(--qb-surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--qb-shadow);
}

.qb-hero-panel {
  min-height: 100%;
}

.qb-hero-card {
  height: 100%;
  padding: 30px;
  border-radius: var(--qb-radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(242, 246, 242, 0.88)),
    radial-gradient(circle at top right, rgba(168, 143, 86, 0.16), transparent 32%);
}

.qb-metric-grid,
.qb-card-grid,
.qb-service-grid,
.qb-preview-grid,
.qb-testimonial-grid,
.qb-steps-grid,
.qb-faq-list {
  display: grid;
  gap: 20px;
}

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

.qb-metric-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border-radius: var(--qb-radius-lg);
  border: 1px solid var(--qb-line);
  background: rgba(244, 248, 244, 0.88);
}

.qb-metric-card strong {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 2rem;
  color: var(--qb-accent-deep);
}

.qb-trust-band {
  padding-top: 16px;
}

.qb-card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 30px;
}

.qb-card-grid-trust {
  margin-top: 24px;
}

.qb-card,
.qb-service-card,
.qb-preview-card,
.qb-testimonial-card,
.qb-note-panel,
.qb-faq-item {
  padding: 28px;
  border-radius: var(--qb-radius-lg);
}

.qb-split-intro,
.qb-two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.92fr);
  gap: 24px;
  align-items: start;
}

.qb-rich,
.qb-page-hero {
  padding: 30px;
  border-radius: var(--qb-radius-xl);
}

.qb-page-hero {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(241, 246, 242, 0.86)),
    radial-gradient(circle at top left, rgba(45, 90, 71, 0.12), transparent 32%);
}

.qb-service-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 30px;
}

.qb-service-card span {
  display: inline-flex;
  margin-bottom: 20px;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--qb-gold);
}

.qb-preview-grid,
.qb-testimonial-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 30px;
}

.qb-preview-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-content: space-between;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(241, 246, 242, 0.84)),
    var(--qb-surface);
}

.qb-preview-label,
.qb-testimonial-role,
.qb-step-label {
  color: var(--qb-muted-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.qb-preview-note {
  margin: 0;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--qb-line);
  background: rgba(248, 250, 248, 0.88);
}

.qb-steps-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 30px;
}

.qb-step {
  display: grid;
  gap: 12px;
  padding: 24px;
  border-radius: var(--qb-radius-lg);
  border: 1px solid var(--qb-line);
  background: rgba(255, 255, 255, 0.62);
}

.qb-step strong {
  font-size: 1.25rem;
  line-height: 1.35;
}

.qb-note-stack {
  display: grid;
  gap: 18px;
}

.qb-note-panel {
  background: rgba(247, 249, 247, 0.88);
}

.qb-testimonial-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(243, 246, 243, 0.84)),
    var(--qb-surface);
}

.qb-quote-mark {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--qb-gold);
  font-size: 2rem;
  line-height: 1;
}

.qb-contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
  gap: 24px;
  padding: 30px;
  border-radius: var(--qb-radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(238, 244, 239, 0.88)),
    var(--qb-surface);
}

.qb-form-shell {
  padding: 26px;
  border-radius: var(--qb-radius-lg);
  background: rgba(255, 255, 255, 0.84);
}

.qb-form-shell h3 {
  margin: 0 0 10px;
}

.qb-form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.qb-contact-form {
  display: grid;
  gap: 16px;
}

.qb-contact-form label {
  display: grid;
  gap: 8px;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 0.92rem;
}

.qb-contact-form input,
.qb-contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(24, 32, 27, 0.12);
  border-radius: 16px;
  background: rgba(249, 251, 249, 0.96);
  color: var(--qb-text);
  font: inherit;
}

.qb-contact-form input:focus,
.qb-contact-form textarea:focus {
  outline: 2px solid rgba(45, 90, 71, 0.14);
  border-color: var(--qb-accent);
}

.qb-contact-form textarea {
  min-height: 160px;
  resize: vertical;
}

.qb-contact-form button {
  cursor: pointer;
}

.qb-form-message {
  margin: 0;
  padding: 12px 14px;
  border-radius: 16px;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-weight: 700;
}

.qb-form-message-success {
  color: #1f5a42;
  background: rgba(65, 158, 109, 0.14);
}

.qb-form-message-error {
  color: #7a312e;
  background: rgba(176, 84, 78, 0.14);
}

.qb-list {
  margin: 18px 0 0;
  padding-left: 20px;
}

.qb-list li + li {
  margin-top: 10px;
}

.qb-checklist li::marker {
  color: var(--qb-accent);
}

.qb-faq-list {
  margin-top: 28px;
  grid-template-columns: 1fr;
}

.qb-faq-item {
  border: 1px solid var(--qb-line);
  background: rgba(247, 250, 247, 0.88);
}

.qb-footer {
  padding: 24px 0 36px;
}

.qb-footer-shell {
  width: min(calc(100% - 40px), var(--qb-width));
  margin: 0 auto;
  padding: 30px;
  border-radius: var(--qb-radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(239, 244, 240, 0.86)),
    var(--qb-surface);
}

.site-footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 24px;
  width: 100%;
}

.qb-footer-copy {
  margin: 12px 0 0;
}

.qb-footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.qb-footer-meta {
  display: grid;
  gap: 12px;
}

.qb-footer-meta p {
  margin: 0;
  color: var(--qb-muted);
}

.qb-footer-credit {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--qb-line);
  color: var(--qb-muted);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 0.9rem;
}

.qb-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.qb-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .site-header-inner,
  .qb-hero,
  .qb-card-grid,
  .qb-split-intro,
  .qb-two-column,
  .qb-service-grid,
  .qb-preview-grid,
  .qb-testimonial-grid,
  .qb-contact-panel,
  .site-footer-inner,
  .qb-steps-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .site-header-inner {
    justify-items: start;
  }

  .qb-metric-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .site-header,
  .site-main,
  .qb-footer-shell,
  .qb-block {
    width: min(calc(100% - 22px), var(--qb-width));
  }

  .site-header {
    padding-top: 14px;
  }

  .site-header-inner {
    padding: 16px;
    border-radius: 26px;
  }

  .site-nav ul {
    justify-content: flex-start;
    gap: 12px 16px;
  }

  .site-header-cta,
  .qb-button,
  .qb-button-primary,
  .qb-button-secondary {
    width: 100%;
  }

  .qb-hero-card,
  .qb-card,
  .qb-service-card,
  .qb-preview-card,
  .qb-testimonial-card,
  .qb-contact-panel,
  .qb-form-shell,
  .qb-page-hero,
  .qb-rich,
  .qb-note-panel,
  .qb-footer-shell,
  .qb-faq-item {
    padding: 22px;
  }

  .qb-metric-grid,
  .qb-form-row {
    grid-template-columns: 1fr;
  }
}