:root {
  /*
    Design DNA: Rapid Roadside Rescue
    Primary: #e63946 (긴급 레드)
    Secondary: #1d3557 (딥 네이비)
    Accent: #ffd166 (경고 옐로우)
    Neutral: #f4f6f8
    Layout: 대형 긴급 히어로 배너, 아이콘 중심 서비스 카드, 긴급 전화 CTA 스트립, 단계형 서비스 절차
    Icon: 굵은 라인 스타일 자동차 정비 아이콘
    Background: 도로 중앙선 모티프 SVG 패턴
    Tone: 긴급 서비스 / 신속 대응 / 기술 전문 서비스
  */
  --color-primary: #e63946;
  --color-secondary: #1d3557;
  --color-accent: #ffd166;
  --color-neutral: #f4f6f8;
  --color-text: #112033;
  --color-white: #ffffff;
  --container: 1120px;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(17, 32, 51, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--color-text);
  background: var(--color-neutral) url("../img/pattern-bg.svg") repeat;
  line-height: 1.6;
}

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 10px;
  background: var(--color-white);
  color: var(--color-secondary);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 1000;
}

.skip-link:focus {
  left: 10px;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid #d7dde5;
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  gap: 1rem;
}

.main-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0;
  margin: 0;
}

.main-nav a {
  font-weight: 700;
  color: var(--color-secondary);
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
}

.main-nav a:hover {
  background: #eef3fa;
}

.menu-toggle {
  display: none;
  border: 0;
  background: var(--color-secondary);
  width: 48px;
  height: 42px;
  border-radius: 10px;
  padding: 0.4rem;
}

.menu-toggle span {
  display: block;
  height: 3px;
  background: var(--color-white);
  margin: 5px 0;
  border-radius: 2px;
}

.hero {
  position: relative;
  min-height: 72vh;
  display: grid;
  align-items: center;
  background: url("../img/hero-bg.svg") center/cover no-repeat;
  isolation: isolate;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(29, 53, 87, 0.3), rgba(230, 57, 70, 0.35));
  z-index: -1;
}

.hero-content {
  padding: 4rem 0;
  color: var(--color-white);
}

.hero-kicker {
  display: inline-block;
  background: rgba(255, 209, 102, 0.2);
  border: 1px solid rgba(255, 209, 102, 0.8);
  color: var(--color-accent);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  margin: 0.7rem 0;
  line-height: 1.2;
}

.hero-subtext {
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  max-width: 620px;
}

.hero-actions {
  margin-top: 1.25rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  font-weight: 800;
  border: 2px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-call {
  background: var(--color-accent);
  color: #332300;
}

.btn-large {
  background: var(--color-accent);
  color: #1d1a12;
  font-size: 1.1rem;
  padding-inline: 1.5rem;
}

.section {
  padding: 4.5rem 0;
}

.section h2 {
  margin-top: 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--color-secondary);
}

.urgent-cta {
  background: var(--color-secondary);
  color: var(--color-white);
  padding: 2rem 0;
}

.urgent-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1.25rem;
  border: 1px solid #d9e1ea;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
}

.service-card h3 {
  margin: 0.8rem 0 0.4rem;
  font-size: 1.1rem;
}

.about {
  background: var(--color-white);
}

.about-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.8rem;
}

.about-list li {
  background: #f6f9ff;
  border-left: 6px solid var(--color-primary);
  padding: 0.9rem 1rem;
  border-radius: 10px;
  font-weight: 600;
}

.process-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.process-steps li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 1rem;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1rem;
  border: 1px solid #dde4ed;
}

.step-no {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 800;
  font-size: 1.2rem;
}

.contact form {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1.2rem;
  border: 1px solid #d9e1ea;
}

.contact-note {
  margin-top: -0.5rem;
  margin-bottom: 1rem;
  color: #344861;
}

.form-grid {
  display: grid;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid #b8c6d6;
  border-radius: 10px;
  padding: 0.7rem;
  font: inherit;
  background: #fbfdff;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}

.mailto-preview {
  font-size: 0.86rem;
  word-break: break-all;
  color: var(--color-secondary);
}

.form-feedback {
  min-height: 1.4rem;
  margin-top: 0.6rem;
  font-weight: 700;
}

.location address {
  font-style: normal;
  font-weight: 700;
  font-size: 1.08rem;
}

.landmark-guide {
  margin-top: 1rem;
  background: var(--color-white);
  border: 1px solid #d9e1ea;
  padding: 1rem;
  border-radius: var(--radius);
}

.business {
  background: var(--color-secondary);
  color: var(--color-white);
}

.business h2 {
  color: var(--color-white);
}

.business ul {
  margin: 0;
  padding-left: 1.1rem;
}

.site-footer {
  background: #0f223c;
  color: var(--color-white);
  text-align: center;
  padding: 1rem 0;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-block;
  }

  .main-nav {
    position: absolute;
    right: 1rem;
    top: 72px;
    background: var(--color-white);
    border: 1px solid #d7dde5;
    border-radius: 12px;
    width: min(280px, calc(100vw - 2rem));
    display: none;
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem;
  }

  .main-nav a {
    display: block;
  }

  .hero {
    min-height: 64vh;
  }
}

@media (min-width: 700px) {
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }
}