/* 挪挪官网 — 美式复古 / 公路工业风（见项目根目录 DESIGN.md） */
:root {
  --nn-navy: #1d3557;
  --nn-navy-deep: #152a45;
  --nn-red: #d62828;
  --nn-red-hover: #e63946;
  --nn-cream: #f0fcea;
  --nn-cream-dark: #e8f4e0;
  --nn-ink: #111111;
  --nn-muted: #4a5f72;
  --nn-muted-light: #5c6b7a;
  --radius: 18px;
  --radius-lg: 22px;
  --border-thick: 4px solid var(--nn-ink);
  --shadow-card: 6px 6px 0 rgba(17, 17, 17, 0.07);
  --shadow-btn: 4px 4px 0 rgba(17, 17, 17, 0.22);
  --font-display: "Barlow Semi Condensed", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Source Sans 3", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  /* 给 sticky header 留出 scroll-padding，锚跳时不会被 header 盖住 */
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--nn-cream);
  color: var(--nn-navy);
  line-height: 1.65;
  min-height: 100vh;
}

a {
  color: var(--nn-red);
  text-decoration: none;
  font-weight: 600;
}

a:hover {
  text-decoration: underline;
  color: var(--nn-red-hover);
}

/* 键盘可见焦点（覆盖默认 outline，与品牌对齐） */
:focus-visible {
  outline: 3px solid var(--nn-red);
  outline-offset: 3px;
  border-radius: 6px;
}

/* 跳过导航的辅助链接 */
.skip-link {
  position: absolute;
  top: -200px;
  left: 12px;
  background: var(--nn-navy);
  color: var(--nn-cream);
  padding: 10px 18px;
  border-radius: 999px;
  border: 3px solid var(--nn-ink);
  font-weight: 700;
  z-index: 9999;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 12px;
  text-decoration: none;
}

/* 微妙纹理，替代原科技蓝网格 */
.bg-grid {
  position: fixed;
  inset: 0;
  background-color: var(--nn-cream);
  background-image:
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 40px,
      rgba(29, 53, 87, 0.04) 40px,
      rgba(29, 53, 87, 0.04) 41px
    );
  pointer-events: none;
  z-index: 0;
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  margin: 0 -24px 28px;
  padding-left: 24px;
  padding-right: 24px;
  background: rgba(240, 252, 234, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 3px solid var(--nn-ink);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--nn-navy);
}
.logo:hover { text-decoration: none; color: var(--nn-navy); }

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--nn-navy);
  color: var(--nn-cream);
  border: 3px solid var(--nn-ink);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo-zh {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.logo-en {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: lowercase;
  color: var(--nn-muted);
  margin-top: 4px;
  font-weight: 600;
}

.site-nav {
  display: flex;
  gap: 28px;
  align-items: center;
}

.site-nav a {
  color: var(--nn-muted);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.site-nav a:hover {
  color: var(--nn-navy);
  border-bottom-color: var(--nn-navy);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  border: 3px solid var(--nn-ink);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--nn-red);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--nn-red-hover);
  box-shadow: 6px 6px 0 rgba(17, 17, 17, 0.2);
  text-decoration: none;
  color: #fff;
}
.btn-primary:active {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0 rgba(17, 17, 17, 0.2);
}
.btn-primary[aria-disabled="true"] {
  background: #f0a6a6;
  cursor: not-allowed;
  box-shadow: 2px 2px 0 rgba(17, 17, 17, 0.15);
}
.btn-primary[aria-disabled="true"]:hover {
  transform: none;
  background: #f0a6a6;
}

.btn-ghost {
  background: var(--nn-cream);
  color: var(--nn-navy);
  border-color: var(--nn-navy);
  box-shadow: var(--shadow-btn);
}
.btn-ghost:hover {
  background: var(--nn-cream-dark);
  text-decoration: none;
  color: var(--nn-navy);
  transform: translateY(-2px);
}
.btn-ghost:active {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0 rgba(17, 17, 17, 0.2);
}

/* Hero：海军蓝全宽带 */
.hero {
  display: grid;
  gap: 40px;
  padding: 48px 28px 56px;
  margin: 0 -24px 40px;
  background: linear-gradient(165deg, var(--nn-navy) 0%, var(--nn-navy-deep) 100%);
  color: var(--nn-cream);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  border: var(--border-thick);
  border-top: none;
  box-shadow: 0 12px 0 rgba(17, 17, 17, 0.08);
  position: relative;
  overflow: hidden;
}
/* hero 上叠一层微点阵，与小程序统一气质 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1.2px, transparent 1.2px);
  background-size: 14px 14px;
  pointer-events: none;
  opacity: 0.7;
}
.hero > * { position: relative; z-index: 1; }

@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 56px;
    padding: 56px 40px 64px;
  }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0.02em;
  margin: 0 0 18px;
  font-weight: 700;
  color: #fff;
}

.hero p.lead {
  color: rgba(240, 252, 234, 0.92);
  font-size: 1.08rem;
  margin: 0 0 28px;
  max-width: 38ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero .btn-ghost {
  background: transparent;
  color: var(--nn-cream);
  border-color: rgba(240, 252, 234, 0.85);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.25);
}

.hero .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--nn-cream);
}

.pill {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  font-family: var(--font-display);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--nn-ink);
  color: var(--nn-cream);
  border: 2px solid rgba(255, 255, 255, 0.35);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.3);
  margin-bottom: 16px;
}

.phone-mock {
  background: var(--nn-cream);
  border: var(--border-thick);
  border-radius: 28px;
  padding: 20px 18px 24px;
  box-shadow: 8px 8px 0 rgba(17, 17, 17, 0.18);
  max-width: 420px;
  width: 100%;
  justify-self: center;
}

.phone-notch {
  width: 100px;
  height: 24px;
  background: var(--nn-navy);
  border-radius: 0 0 14px 14px;
  margin: -8px auto 16px;
}

.mock-screen {
  background: linear-gradient(180deg, #fff 0%, var(--nn-cream-dark) 100%);
  border-radius: 18px;
  padding: 24px;
  min-height: 280px;
  border: 3px solid var(--nn-navy);
}

.mock-title {
  font-size: 0.78rem;
  color: var(--nn-muted);
  margin-bottom: 8px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.mock-number {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--nn-navy);
  margin-bottom: 6px;
}

.mock-ext {
  font-size: 0.92rem;
  color: var(--nn-muted);
  margin-bottom: 20px;
}
.mock-ext strong {
  color: var(--nn-red);
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  font-weight: 800;
}

.mock-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 2px solid rgba(29, 53, 87, 0.12);
  font-size: 0.95rem;
  color: var(--nn-navy);
}
.mock-row--muted {
  color: var(--nn-muted);
  font-size: 0.85rem;
}

.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--nn-red);
  flex-shrink: 0;
}

section {
  padding: 48px 0;
}

section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  margin: 0 0 12px;
  letter-spacing: 0.02em;
  color: var(--nn-navy);
}

.section-desc {
  color: var(--nn-muted);
  margin: 0 0 32px;
  max-width: 52ch;
  font-size: 1.02rem;
}

.steps {
  display: grid;
  gap: 16px;
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.step {
  text-align: center;
  padding: 22px 12px;
  background: #fff;
  border-radius: var(--radius);
  border: 3px solid var(--nn-navy);
  box-shadow: var(--shadow-card);
  transition: transform 0.15s ease;
}
.step:hover { transform: translateY(-2px); }

.step-num {
  width: 38px;
  height: 38px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--nn-red);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  display: grid;
  place-items: center;
  font-size: 1rem;
  border: 2px solid var(--nn-ink);
}

.step strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.95rem;
  color: var(--nn-navy);
  font-family: var(--font-display);
}

.step span {
  font-size: 0.82rem;
  color: var(--nn-muted);
}

.cta-band {
  margin-top: 36px;
  padding: 44px 28px;
  border-radius: var(--radius-lg);
  background: var(--nn-red);
  color: #fff;
  border: var(--border-thick);
  box-shadow: 8px 8px 0 rgba(17, 17, 17, 0.18);
}

.cta-band__inner {
  display: grid;
  gap: 28px;
  align-items: center;
}

@media (min-width: 800px) {
  .cta-band__inner {
    grid-template-columns: 1fr auto;
    gap: 40px;
  }
}

.cta-band h2 {
  color: #fff;
  margin-bottom: 10px;
}

.cta-band__copy p {
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 22px;
  max-width: 46ch;
}

.cta-band__btn {
  background: #fff;
  color: var(--nn-red);
  border-color: var(--nn-ink);
}
.cta-band__btn:hover {
  background: var(--nn-cream);
  color: var(--nn-red);
}

.cta-band__qr {
  justify-self: center;
}
.cta-band__qr-inner {
  width: 160px;
  height: 160px;
  background: #fff;
  border: 3px solid var(--nn-ink);
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.2);
  color: var(--nn-navy);
}
.cta-band__qr-mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  color: var(--nn-navy);
}
.cta-band__qr-label {
  text-align: center;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--nn-muted);
  line-height: 1.45;
}

footer {
  padding: 28px 24px;
  text-align: center;
  background: var(--nn-navy);
  color: rgba(240, 252, 234, 0.78);
  font-size: 0.88rem;
  margin: 48px -24px 0;
  border-top: var(--border-thick);
}
.footer-inner {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  justify-content: center;
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--nn-cream);
  letter-spacing: 0.04em;
}
.footer-sep { color: rgba(240, 252, 234, 0.45); }

.pain-solve-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pain-solve-item {
  display: grid;
  gap: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 3px solid var(--nn-ink);
  box-shadow: var(--shadow-card);
  transition: transform 0.15s ease;
}
.pain-solve-item:hover { transform: translateY(-2px); }

@media (min-width: 800px) {
  .pain-solve-item {
    grid-template-columns: 1fr 1fr;
  }
}

.pain-solve-item .pain,
.pain-solve-item .solve {
  padding: 22px 24px;
}

.pain-solve-item .pain {
  background: #fff5f5;
  border-bottom: 3px solid var(--nn-ink);
}

@media (min-width: 800px) {
  .pain-solve-item .pain {
    border-bottom: none;
    border-right: 3px solid var(--nn-ink);
  }
}

.pain-solve-item .pain h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  font-family: var(--font-display);
  color: #9b1c1c;
}

.pain-solve-item .pain p {
  margin: 0;
  color: var(--nn-muted);
  font-size: 0.95rem;
}

.pain-solve-item .solve {
  background: var(--nn-cream-dark);
}

.pain-solve-item .solve strong {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--font-display);
  color: var(--nn-navy);
  margin-bottom: 8px;
}

.pain-solve-item .solve p {
  margin: 0;
  color: var(--nn-navy);
  font-size: 0.96rem;
}

.compare-wrap {
  display: grid;
  gap: 20px;
}

@media (min-width: 800px) {
  .compare-wrap {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }
}

.compare-col {
  border-radius: var(--radius);
  padding: 26px;
  border: 3px solid var(--nn-ink);
  box-shadow: var(--shadow-card);
}

.compare-col h3 {
  margin: 0 0 16px;
  font-size: 1.08rem;
  font-family: var(--font-display);
}

.compare-others {
  background: #fff;
}

.compare-others h3 {
  color: var(--nn-muted);
}

.compare-us {
  background: var(--nn-navy);
  color: var(--nn-cream);
}

.compare-us h3 {
  color: #fff;
}

.compare-col ul {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.95rem;
  line-height: 1.65;
}

.compare-others ul { color: var(--nn-muted); }
.compare-us ul { color: rgba(240, 252, 234, 0.92); }

.compare-col li { margin-bottom: 12px; }
.compare-col li:last-child { margin-bottom: 0; }

.compare-us strong { color: #fff; }
.compare-others strong { color: var(--nn-navy); }

/* —— 移动端：把导航换成更轻的横排，超长时允许换行；窄屏下隐藏 CTA 文字保留 logo —— */
@media (max-width: 720px) {
  .site-header {
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 12px;
    padding-bottom: 12px;
  }
  .site-nav {
    order: 3;
    width: 100%;
    gap: 18px;
    justify-content: center;
    padding-top: 4px;
    border-top: 2px dashed rgba(29, 53, 87, 0.18);
    margin-top: 8px;
  }
  .header-cta {
    padding: 10px 18px;
    font-size: 0.85rem;
  }
  .hero { padding: 36px 22px 44px; }
  .hero h1 br { display: none; }
  .phone-mock { max-width: 360px; }
  section { padding: 36px 0; }
  .cta-band { padding: 36px 22px; }
  footer { padding: 22px 16px; }
}

@media (max-width: 420px) {
  .site-nav { gap: 12px; font-size: 0.85rem; }
  .logo-en { display: none; }
}

/* —— 尊重用户的减弱动效偏好 —— */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .btn-primary:hover,
  .btn-ghost:hover,
  .pain-solve-item:hover,
  .step:hover { transform: none; }
}