/* ============================================
   VARIABLES & RESET
   ============================================ */
:root {
  --white: #FFFFFF;
  --bg: #F7F7F5;
  --dark: #1A1A1A;
  --text: #333333;
  --muted: #888888;
  --accent: #FCA311;
  --border: #E5E5E0;
  --accent-hover: #E5940F;
  --accent-dark: #b88c14;
  --footer-bg: #111;
  --container: 1160px;
  --header-h: 68px;
  --ease: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  background: var(--white);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

address {
  font-style: normal;
}

::selection {
  background: var(--accent);
  color: var(--dark);
}

::-moz-selection {
  background: var(--accent);
  color: var(--dark);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 5%;
}

.section {
  padding: 50px 0;
}

.section--gray {
  background: var(--bg);
}

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

/* Section heading */
.section-head {
  margin-bottom: 40px;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 900;
  letter-spacing: 0.04em;
}

.section-head p {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.93rem;
  max-width: 560px;
  margin-inline: auto;
}

.en-label {
  font-family: 'Barlow', sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 0.875rem;
  font-weight: 700;
  border: 2px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: var(--ease);
}

.btn svg {
  width: 15px;
  height: 15px;
  transition: transform var(--ease);
}

.btn:hover svg {
  transform: translateX(4px);
}

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

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--accent);
  color: var(--dark);
  border-color: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn--outline-dark {
  background: transparent;
  color: var(--text);
  border-color: var(--text);
}

.btn--outline-dark:hover {
  background: var(--dark);
  color: var(--white);
  border-color: var(--dark);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 1000;
  display: flex;
  align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--ease), box-shadow var(--ease), border-color var(--ease);
}

.site-header.scrolled {
  background: var(--white);
  border-bottom-color: var(--border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.site-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}

.logo-main {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--white);
  transition: color var(--ease);
}

.site-header.scrolled .logo-main {
  color: var(--dark);
}

.logo-sub {
  font-family: 'Barlow', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--ease);
}

.site-header.scrolled .logo-sub {
  color: var(--accent);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  transition: color var(--ease);
}

.site-header.scrolled .nav-links a {
  color: rgba(26, 26, 26, 0.6);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

.site-header.scrolled .nav-links a:hover,
.site-header.scrolled .nav-links a.active {
  color: var(--dark);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-contact {
  padding: 9px 20px !important;
  background: var(--accent) !important;
  color: var(--dark) !important;
}

.nav-contact::after {
  display: none !important;
}

.nav-contact:hover {
  background: var(--accent-dark) !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  transition: var(--ease);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
.mobile-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  transform: translateX(100%);
  transition: transform 0.35s ease;
  z-index: 999;
}

.mobile-nav.open {
  transform: translateX(0);
}

.mobile-nav a {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  transition: color var(--ease);
}

.mobile-nav a:hover {
  color: var(--accent);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  height: 100dvh;
  /* モバイルブラウザのアドレスバーを除いた正確な画面高 */
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
  background: var(--dark);
}

.hero-img-placeholder {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(26, 26, 26, 0.2) 0%, rgba(26, 26, 26, 0.65) 60%, rgba(26, 26, 26, 0.9) 100%),
    url('../images/hero-photo.png') center / cover no-repeat;
  background-color: #222;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-bottom: 64px;
  width: 100%;
}

.hero-title {
  font-size: clamp(2.4rem, 6.5vw, 5rem);
  font-weight: 900;
  line-height: 1.6;
  padding: 10px 0;
  letter-spacing: 0.05em;
  color: var(--white);
  margin-bottom: 24px;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.hero-highlight {
  display: inline-block;
  background-color: var(--accent);
  color: var(--dark);
  padding: 4px 12px;
  margin: 0 4px;
  transform: skewX(-8deg);
  font-weight: 900;
  border-radius: 2px;
  line-height: 1.2;
}

.hero-sub {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 2;
  max-width: 500px;
  margin-bottom: 36px;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ============================================
   PAGE HEADER (inner pages)
   ============================================ */
.page-header {
  padding-top: calc(var(--header-h) + 56px);
  padding-bottom: 56px;
  background: var(--dark);
  color: var(--white);
}

.page-header .en-title {
  font-family: 'Barlow', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
}

.page-header h1 {
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 900;
  letter-spacing: 0.04em;
}

.breadcrumb {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--ease);
}

.breadcrumb a:hover {
  color: var(--accent);
}

/* ============================================
   HOME: SERVICES (Text Only)
   ============================================ */
.services-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.service-row-text {
  padding: 16px 0;
  text-align: center;
}

.service-row__num {
  font-family: 'Barlow', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}

.service-row__title {
  font-size: 1.7rem;
  font-weight: 900;
  margin-bottom: 16px;
}

.service-row__desc {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 2;
}

/* ============================================
   CONTACT CTA
   ============================================ */
.contact-cta {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-cta h2 {
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  font-weight: 900;
  margin-bottom: 14px;
}

.contact-cta p {
  color: var(--muted);
  margin-bottom: 32px;
  font-size: 0.93rem;
}

.contact-cta .tel {
  font-family: 'Barlow', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}

.contact-cta .tel-note {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 28px;
}

/* ============================================
   ABOUT PAGE: Company table
   ============================================ */
.company-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.company-table tr {
  border-bottom: 1px solid var(--border);
}

.company-table tr:first-child {
  border-top: 1px solid var(--border);
}

.company-table th {
  padding: 20px 20px 20px 0;
  font-weight: 700;
  width: 200px;
  vertical-align: top;
  white-space: nowrap;
}

.company-table td {
  padding: 20px 0;
  color: var(--muted);
  line-height: 1.8;
}

/* ============================================
   SERVICE PAGE (service.html)
   ============================================ */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail.reverse {
  direction: rtl;
}

.service-detail.reverse>* {
  direction: ltr;
}

.service-detail__img {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.service-detail__bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.1);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.sd-bg--1 {
  background: #2C3E50 url('../images/service-01.svg') center / cover no-repeat;
}

.sd-bg--3 {
  background: #3a2e1a url('../images/service-03.svg') center / cover no-repeat;
}

.service-detail__num {
  font-family: 'Barlow', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
}

.service-detail__body h2 {
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  font-weight: 900;
  margin-bottom: 6px;
}

.service-detail__body .en {
  font-family: 'Barlow', sans-serif;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.14em;
  display: block;
  margin-bottom: 20px;
}

.service-detail__body p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 2;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
}

.service-feature::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--accent);
  flex-shrink: 0;
}

/* ============================================
   WORKS PAGE (works.html)
   ============================================ */
.works-filter {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 22px;
  border: 1px solid var(--border);
  background: transparent;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  font-family: inherit;
  transition: var(--ease);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--dark);
  color: var(--white);
  border-color: var(--dark);
}

.works-full-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.works-full-grid .work-item {
  aspect-ratio: 4/3;
}

.work-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.work-item__bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.1);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  transition: transform 0.4s ease;
}

.work-item:hover .work-item__bg {
  transform: scale(1.03);
}

.work-item__bg--1 {
  background: #2C3E50;
}

.work-item__bg--2 {
  background: #1A1A2E;
}

.work-item__bg--3 {
  background: #2a2a2a;
}

.work-item__bg--4 {
  background: #1C2833;
}

.work-item__bg--5 {
  background: #1a2e1a;
}

.work-item__bg--6 {
  background: #2e1a1a;
}

.work-item__bg--7 {
  background: #2e2a1a;
}

.work-item__bg--8 {
  background: #1a2a2e;
}

.work-item__bg--9 {
  background: #2a1a2e;
}

.work-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.78) 0%, transparent 55%);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  opacity: 0;
  transition: opacity var(--ease);
}

.work-item:hover .work-item__overlay {
  opacity: 1;
}

.work-item__cat {
  font-family: 'Barlow', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.work-item__name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
}

/* ============================================
   RECRUIT PAGE
   ============================================ */
.job-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.job-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 36px 28px;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.job-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
}

.job-card__type {
  font-family: 'Barlow', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.job-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.job-card dl {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.job-card dt {
  font-size: 0.74rem;
  color: var(--muted);
  margin-bottom: 2px;
}

.job-card dd {
  font-size: 0.875rem;
  padding-left: 12px;
  border-left: 2px solid var(--accent);
  line-height: 1.7;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 72px;
  align-items: start;
}

.tel-big {
  font-family: 'Barlow', sans-serif;
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 4px;
}

.hours {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 28px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 700;
}

.form-group label .required {
  color: var(--accent);
  margin-left: 4px;
  font-size: 0.72rem;
}

.form-group input:not([type="checkbox"]),
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--border);
  background: var(--white);
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--text);
  outline: none;
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color var(--ease);
}

/* チェックボックスはブラウザデフォルトを維持 */
.form-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex-shrink: 0;
  cursor: pointer;
  accent-color: var(--accent);
  appearance: auto;
  -webkit-appearance: auto;
}

.form-group input:not([type="checkbox"]):focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.1);
}

/* 送信ボタン非活性スタイル */
.btn:disabled,
.btn[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}

.form-group textarea {
  min-height: 148px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-submit .btn {
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 0.95rem;
}

.form-note {
  font-size: 0.78rem;
  color: var(--muted);
  text-align: center;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--footer-bg);
  color: rgba(255, 255, 255, 0.6);
  padding: 56px 0 0;
}

.site-footer .logo-main,
.site-footer .logo-sub {
  color: var(--white);
}

.site-footer .logo-sub {
  color: var(--accent);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand address {
  margin-top: 16px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.9;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav a {
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--ease);
}

.footer-nav a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.74rem;
  color: rgba(255, 255, 255, 0.45);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--accent);
  color: var(--dark);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background 0.2s ease;
  z-index: 900;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent-dark);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ============================================
   FADE IN
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 {
  transition-delay: 0.1s;
}

.fade-in-delay-2 {
  transition-delay: 0.2s;
}

/* ============================================
   UTILITY CLASSES (inline style replacements)
   ============================================ */
.about-text {
  margin: 0 auto;
  text-align: center;
}

.about-text .btn {
  margin-top: 32px;
}

.service-row-text .btn {
  margin-top: 24px;
}

.service-row-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

.privacy-content {
  max-width: 900px;
}

.privacy-body {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 2.2;
}

.privacy-body p {
  margin-bottom: 20px;
}

.privacy-body p:first-child {
  margin-bottom: 32px;
}

.privacy-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
}

.privacy-body ul {
  padding-left: 20px;
  margin-bottom: 20px;
  list-style: disc;
}

.privacy-body ul li {
  margin-bottom: 8px;
}

.privacy-body .privacy-date {
  margin-top: 40px;
  text-align: right;
  color: var(--text);
}

.privacy-body .privacy-contact-info {
  margin-bottom: 4px;
}

.privacy-body .privacy-contact-info:last-of-type {
  margin-bottom: 20px;
}

.contact-info-box {
  margin-top: 32px;
  padding: 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  line-height: 1.9;
}

.contact-info-box strong {
  color: var(--text);
  display: block;
  margin-bottom: 8px;
}

.contact-address strong {
  color: var(--text);
  display: block;
  margin-bottom: 8px;
}

.privacy-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-weight: normal;
}

.privacy-label input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
  accent-color: var(--accent);
}

.privacy-label span {
  font-size: 0.875rem;
}

.privacy-label a {
  color: var(--accent);
  text-decoration: underline;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 860px) {

  .service-detail,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .service-detail.reverse {
    direction: ltr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 60px;
  }

  .section {
    padding: 60px 0;
  }

  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    height: 100vh;
    height: 100dvh;
    min-height: 100vh;
    min-height: 100dvh;
  }

  /* Mobile: show phone as clickable link, hide plain text */
  .tel-pc {
    display: none !important;
  }

  .tel-mobile {
    display: block !important;
  }

  .hero-content {
    padding-bottom: 48px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }

  .works-full-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .works-full-grid {
    grid-template-columns: 1fr;
  }

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

  .company-table th {
    width: 120px;
    font-size: 0.84rem;
    white-space: normal;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}