:root {
  --bg: #FAF4EA;
  --bg-2: #F5EBDB;
  --panel: #FFFCF6;
  --panel-soft: #FBF3E6;
  --text: #2B241D;
  --muted: rgba(43, 36, 29, 0.62);
  --border: rgba(43, 36, 29, 0.08);
  --primary: #E8B89B;
  --primary-strong: #D9876D;
  --primary-soft: rgba(232, 184, 155, 0.18);
  --shadow: 0 18px 50px rgba(43, 36, 29, 0.08);
  --radius: 22px;
  --max-width: 1120px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.65;
}

a { color: var(--primary-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

body { min-height: 100vh; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(250, 244, 234, 0.85);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.nav-links a {
  color: var(--muted);
  font-size: 14px;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 72px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 24px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy,
.hero-side,
.section,
.faq-item,
.footer {
  padding: 28px;
}

.eyebrow {
  color: var(--primary-strong);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

h1, h2, h3 { margin: 0 0 12px; line-height: 1.25; color: var(--text); }

h1 { font-size: clamp(32px, 4.6vw, 50px); font-weight: 600; }
h2 { font-size: clamp(22px, 2.8vw, 30px); font-weight: 600; }
h3 { font-size: 18px; font-weight: 600; }

p { margin: 0 0 12px; color: var(--muted); }

.section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.feature-list,
.simple-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.feature-list li,
.simple-list li {
  margin-bottom: 10px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--primary-soft);
  border: 1px solid rgba(232, 184, 155, 0.32);
  color: var(--text);
  font-size: 13px;
}

.columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.lang-block {
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.lang-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(43, 36, 29, 0.05);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
}

.page-title {
  margin-bottom: 28px;
  padding: 40px 32px;
  border-top: 2px solid var(--primary);
  background: linear-gradient(180deg, var(--primary-soft) 0%, rgba(255, 255, 255, 0) 100%);
}

.page-title h1 { margin-bottom: 8px; }
.page-title p { margin-bottom: 0; }
.page-title .eyebrow { margin-bottom: 16px; }

.section-stack { display: grid; gap: 20px; }

.faq-list { display: grid; gap: 16px; }

.faq-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.footer {
  margin-top: 32px;
  color: var(--muted);
  text-align: center;
}

.footer small { display: block; margin-top: 10px; }

.contact-box {
  margin-top: 18px;
  padding: 16px;
  border-radius: 16px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
}

.meta-note {
  font-size: 13px;
  color: rgba(43, 36, 29, 0.5);
}

.quote-box {
  margin: 20px 0;
  padding: 22px 24px;
  background: var(--panel-soft);
  border-left: 3px solid var(--primary);
  border-radius: 12px;
  color: var(--text);
  font-size: 18px;
  line-height: 1.75;
}

/* Feedback form */
.feedback-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.form-label .optional {
  font-weight: 400;
  color: rgba(43, 36, 29, 0.36);
  font-size: 12px;
  margin-left: 4px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #FFFFFF;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  line-height: 1.5;
  outline: none;
  transition: border-color 0.2s;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(43, 36, 29, 0.3);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--primary);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='rgba(43,36,29,0.5)' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-select option {
  background: #FFFFFF;
  color: var(--text);
}

.submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border: none;
  border-radius: 12px;
  background: var(--text);
  color: #FFFCF6;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  align-self: flex-start;
}

.submit-btn:hover { opacity: 0.88; }
.submit-btn:active { transform: scale(0.97); }
.submit-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.char-count {
  font-size: 12px;
  color: rgba(43, 36, 29, 0.3);
  text-align: right;
  margin-top: -4px;
}

.char-count.warn { color: #c97c40; }

.feedback-result {
  display: none;
  text-align: center;
  padding: 48px 24px;
}

.feedback-result.visible { display: block; }

.result-icon { font-size: 48px; margin-bottom: 16px; }
.result-title { font-size: 22px; font-weight: 600; margin-bottom: 8px; }
.result-desc { color: var(--muted); margin-bottom: 24px; }

.reset-btn {
  display: inline-flex;
  padding: 10px 24px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.reset-btn:hover { background: rgba(43, 36, 29, 0.04); }

.version-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(43, 36, 29, 0.06);
  font-size: 12px;
  color: rgba(43, 36, 29, 0.5);
}

.form-hint {
  font-size: 12px;
  color: rgba(43, 36, 29, 0.36);
  margin-top: -4px;
}

@media (max-width: 900px) {
  .hero,
  .section-grid,
  .columns {
    grid-template-columns: 1fr;
  }

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