/* ========================================
   D-Research — 2026 Design
   ======================================== */

:root {
  --dark:    #050d1f;
  --dark2:   #0d1b3e;
  --blue:    #304ffe;
  --blue-lt: #5c7cff;
  --cyan:    #00b4d8;
  --white:   #ffffff;
  --gray-50: #f7f8fc;
  --gray-100:#eef0f6;
  --gray-300:#c8ccdb;
  --gray-500:#7a7f9a;
  --gray-700:#3d4160;
  --text:    #111827;
  --text-sub:#5a617a;
  --radius:  12px;
  --radius-lg: 20px;
  --shadow:  0 4px 24px rgba(5,13,31,.10);
  --shadow-lg: 0 12px 48px rgba(5,13,31,.18);
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.75;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ── Scroll animations ── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .65s var(--transition), transform .65s var(--transition);
}
.fade-up.visible { opacity: 1; transform: none; }
[data-delay="80"].fade-up.visible  { transition-delay: .08s; }
[data-delay="100"].fade-up.visible { transition-delay: .10s; }
[data-delay="150"].fade-up.visible { transition-delay: .15s; }
[data-delay="160"].fade-up.visible { transition-delay: .16s; }
[data-delay="200"].fade-up.visible { transition-delay: .20s; }
[data-delay="240"].fade-up.visible { transition-delay: .24s; }
[data-delay="300"].fade-up.visible { transition-delay: .30s; }
[data-delay="320"].fade-up.visible { transition-delay: .32s; }

/* ── Shared ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 40px; }
.section { padding: 100px 0; }

.section-header { margin-bottom: 56px; }
.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--blue);
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 900;
  color: var(--text);
  line-height: 1.3;
  position: relative;
  padding-bottom: 18px;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 40px; height: 3px;
  background: var(--blue);
  border-radius: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: inherit;
}
.btn--primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 6px 24px rgba(48,79,254,.35);
}
.btn--primary:hover { background: #1a3ae8; transform: translateY(-2px); box-shadow: 0 10px 32px rgba(48,79,254,.45); }
.btn--ghost {
  background: rgba(255,255,255,.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover { background: rgba(255,255,255,.2); transform: translateY(-2px); }

.img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--gray-300);
  font-size: 13px;
  font-weight: 500;
}
.img-placeholder .material-icons-round { font-size: 40px !important; }

.img-placeholder--dark {
  background: linear-gradient(135deg, #1a2340 0%, #0d1527 100%);
  color: rgba(255,255,255,.25);
}

/* ========================================
   Header
   ======================================== */
.header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  padding: 0 40px;
  max-width: 1200px;
  margin: 0 auto;
}
.logo {
  font-size: 20px;
  font-weight: 900;
  color: #fff;
  letter-spacing: .02em;
  transition: color var(--transition);
}
.header.scrolled .logo { color: var(--text); }
.logo-d { color: var(--blue); }

.nav { display: flex; align-items: center; gap: 36px; }
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  transition: color var(--transition);
}
.header.scrolled .nav-link { color: var(--text-sub); }
.nav-link:hover { color: var(--blue) !important; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--blue);
  color: #fff !important;
  padding: 9px 20px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  transition: background var(--transition), transform var(--transition);
}
.nav-cta:hover { background: #1a3ae8; transform: translateY(-1px); }
.nav-cta .material-icons-round { font-size: 16px !important; }

.hamburger {
  display: none;
  background: none; border: none;
  cursor: pointer; padding: 4px;
  color: #fff;
  transition: color var(--transition);
}
.header.scrolled .hamburger { color: var(--text); }
.hamburger .material-icons-round { font-size: 26px !important; }

.mobile-menu {
  display: none;
  background: #fff;
  border-top: 1px solid var(--gray-100);
  padding: 8px 0 16px;
}
.mobile-menu.open { display: block; }
.mobile-link {
  display: block;
  padding: 14px 40px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  border-bottom: 1px solid var(--gray-50);
  transition: color var(--transition);
}
.mobile-link:hover { color: var(--blue); }
.mobile-link--cta {
  color: var(--blue);
  font-weight: 700;
  border-bottom: none;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--dark);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('images/top.png');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  opacity: .5;
  z-index: 0;
  -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 75%);
  mask-image: linear-gradient(to bottom, black 40%, transparent 75%);
}

/* Animated background */
.hero-canvas { position: absolute; inset: 0; }
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .45;
}
.hero-glow--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #1a3ae8 0%, transparent 70%);
  top: -100px; right: -100px;
  animation: glow1 8s ease-in-out infinite alternate;
}
.hero-glow--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #00b4d8 0%, transparent 70%);
  bottom: -80px; left: 10%;
  opacity: .25;
  animation: glow2 10s ease-in-out infinite alternate;
}
@keyframes glow1 { to { transform: translate(40px, 30px); } }
@keyframes glow2 { to { transform: translate(-30px, -20px); } }

.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 64px 64px;
}

.hero-content {
  position: relative; z-index: 1;
  max-width: 820px;
  padding: 130px 40px 100px;
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(48,79,254,.2);
  border: 1px solid rgba(48,79,254,.4);
  color: var(--blue-lt);
  font-size: 13px;
  font-weight: 700;
  padding: 7px 16px;
  border-radius: 50px;
  margin-bottom: 28px;
}
.hero-badge .material-icons-round { font-size: 16px !important; color: var(--cyan); }

.hero-title {
  font-size: clamp(36px, 6vw, 68px);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -.01em;
  margin-bottom: 24px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(90deg, var(--blue-lt), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 17px;
  color: rgba(255,255,255,.7);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.htag {
  background: rgba(255,248,0,.12);
  border: 1px solid rgba(255,248,0,.35);
  color: #fff8a0;
  font-size: 14px;
  font-weight: 700;
  padding: 7px 16px;
  border-radius: 6px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.hero-note {
  display: inline-flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.5);
  line-height: 1.6;
}
.hero-note .material-icons-round { font-size: 16px !important; margin-top: 2px; flex-shrink: 0; }
.hero-note strong { color: rgba(255,255,255,.8); }

.hero-scroll-hint {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.35);
  font-size: 11px;
  letter-spacing: .12em;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,.35));
  animation: scrollLine 1.8s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ========================================
   Stats
   ======================================== */
.stats-section {
  background: var(--dark2);
  padding: 60px 0;
  border-top: 1px solid rgba(255,255,255,.05);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 0;
}
.stat-item {
  text-align: center;
  padding: 20px 24px;
  border-right: 1px solid rgba(255,255,255,.07);
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: clamp(40px, 5vw, 60px);
  font-weight: 900;
  background: linear-gradient(135deg, #fff 0%, var(--blue-lt) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-unit {
  font-size: 14px;
  color: var(--blue-lt);
  font-weight: 700;
  margin: 4px 0 8px;
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,.45);
}

/* ========================================
   Necessity
   ======================================== */
.necessity-illust {
  margin-bottom: 40px;
  max-width: 320px;
}
.necessity-section { background: var(--gray-50); }
.necessity-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
}
.necessity-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
  transition: box-shadow var(--transition), transform var(--transition);
}
.necessity-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }

.necessity-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.necessity-card-header h3 {
  margin-bottom: 0;
}
.necessity-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(48,79,254,.1);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.necessity-icon .material-icons-round { font-size: 26px !important; color: var(--blue); }
.necessity-icon--red { background: rgba(239,68,68,.1); }
.necessity-icon--red .material-icons-round { color: #ef4444; }
.necessity-icon--gold { background: rgba(245,158,11,.1); }
.necessity-icon--gold .material-icons-round { color: #f59e0b; }

.necessity-card h3 {
  font-size: 17px; font-weight: 700;
  color: var(--text); margin-bottom: 12px;
}
.necessity-card p { font-size: 14px; color: var(--text-sub); line-height: 1.8; }
.necessity-accidents {
  margin-top: 14px;
  padding: 14px 16px;
  background: #fef2f2;
  border-left: 3px solid #ef4444;
  border-radius: 6px;
  font-size: 12px;
  color: #7f1d1d;
  line-height: 1.9;
}
.necessity-accidents p { margin-bottom: 4px; }
.necessity-accidents p:last-child { margin-bottom: 0; }

/* ========================================
   Merits
   ======================================== */
.merits-section { background: var(--dark); }
.merits-section .section-label { color: var(--cyan); }
.merits-section .section-title { color: #fff; }
.merits-section .section-title::after { background: var(--cyan); }

.merits-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 20px;
}
.merit-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  backdrop-filter: blur(12px);
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.merit-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(48,79,254,.08) 0%, transparent 60%);
  pointer-events: none;
}
.merit-card:hover {
  background: rgba(255,255,255,.09);
  border-color: rgba(48,79,254,.4);
  transform: translateY(-4px);
}
.merit-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.merit-number {
  font-size: 44px; font-weight: 900;
  color: #fff;
  line-height: 1;
  letter-spacing: -.02em;
}
.merit-icon {
  font-size: 28px !important;
  color: var(--cyan);
}
.merit-card h3 {
  font-size: 16px; font-weight: 700;
  color: #fff; margin-bottom: 10px;
}
.merit-card p { font-size: 13px; color: rgba(255,255,255,.55); line-height: 1.8; }

/* ========================================
   Reasons
   ======================================== */
.reasons-section { background: #fff; }
.reasons-list { display: flex; flex-direction: column; }

.reason-item {
  padding: 36px 0;
  border-bottom: 1px solid var(--gray-100);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px;
  align-items: start;
  transition: background var(--transition);
}
.reason-item:first-child { border-top: 1px solid var(--gray-100); }
.reason-item:hover { background: var(--gray-50); margin: 0 -40px; padding-left: 40px; padding-right: 40px; }

.reason-head {
  display: flex;
  align-items: center;
  gap: 20px;
  grid-column: 1 / -1;
  margin-bottom: -12px;
}
.reason-num {
  font-size: 13px; font-weight: 900;
  color: var(--blue);
  background: rgba(48,79,254,.08);
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: .05em;
}
.reason-head h3 {
  font-size: 18px; font-weight: 700;
  color: var(--text);
}
.reason-item > p {
  grid-column: 1 / -1;
  font-size: 14px; color: var(--text-sub);
  line-height: 1.9;
  padding-left: 52px;
}
.reason-tags {
  grid-column: 1 / -1;
  display: flex; flex-wrap: wrap;
  gap: 8px;
  padding-left: 52px;
}
.ters-badge {
  grid-column: 1 / -1;
  padding-left: 52px;
  margin-top: 12px;
}
.ters-badge img {
  max-width: 340px;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.reason-tags span {
  background: rgba(48,79,254,.07);
  color: var(--blue);
  font-size: 12px; font-weight: 700;
  padding: 4px 12px;
  border-radius: 50px;
  border: 1px solid rgba(48,79,254,.15);
}

/* ========================================
   Equipment
   ======================================== */
.equipment-section { background: var(--gray-50); }
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
}
.equipment-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
  transition: box-shadow var(--transition), transform var(--transition);
}
.equipment-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }

.equipment-img-wrap { overflow: hidden; }
.equipment-img-wrap img { width: 100%; height: 220px; object-fit: cover; display: block; }
.equipment-img-wrap--contain img {
  height: 220px;
  object-fit: contain;
  background: #f0f2f5;
  padding: 0 40px;
}

/* Dual image layout for camera card */
.equipment-img-wrap--dual {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0;
}
.equipment-img-main { height: 220px !important; object-fit: cover; }
.equipment-img-sub {
  width: 80px !important;
  height: 220px !important;
  object-fit: contain;
  background: #f0f2f5;
  padding: 8px;
}
.equipment-body { padding: 24px 24px 28px; }
.equipment-body h3 {
  font-size: 16px; font-weight: 700;
  color: var(--text); margin-bottom: 16px;
}
.spec-list { margin-bottom: 12px; }
.spec-list li {
  display: flex; gap: 12px;
  font-size: 13px; color: var(--text-sub);
  padding: 7px 0;
  border-bottom: 1px solid var(--gray-50);
  line-height: 1.5;
}
.spec-list li:last-child { border-bottom: none; }
.spec-list span {
  flex-shrink: 0;
  font-weight: 700;
  color: var(--text);
  min-width: 72px;
}
.equipment-note {
  font-size: 13px; color: var(--text-sub);
  line-height: 1.8;
  margin-top: 12px;
}

/* ========================================
   Cases
   ======================================== */
.cases-section { background: var(--dark2); }
.cases-section .section-label { color: var(--cyan); }
.cases-section .section-title { color: #fff; }
.cases-section .section-title::after { background: var(--cyan); }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 24px;
}
.case-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.case-card:hover { border-color: rgba(48,79,254,.5); transform: translateY(-4px); }

.case-img { position: relative; overflow: hidden; }
.case-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform .4s var(--transition);
}
.case-card:hover .case-img img { transform: scale(1.04); }
.case-badge {
  position: absolute;
  top: 14px; left: 14px;
  background: var(--blue);
  color: #fff;
  font-size: 12px; font-weight: 700;
  padding: 4px 12px;
  border-radius: 50px;
}
.case-body { padding: 20px 24px 24px; }
.case-meta {
  display: flex; align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
}
.case-location {
  display: flex; align-items: center;
  gap: 4px;
  font-size: 13px; font-weight: 700;
  color: var(--cyan);
}
.case-location .material-icons-round { font-size: 14px !important; }
.case-type {
  font-size: 12px; color: rgba(255,255,255,.4);
  background: rgba(255,255,255,.06);
  padding: 3px 10px;
  border-radius: 50px;
}
.case-body p { font-size: 13px; color: rgba(255,255,255,.6); line-height: 1.8; }

/* ========================================
   Flow
   ======================================== */
.flow-section { background: #fff; }
.flow-track { display: flex; flex-direction: column; gap: 0; }

.flow-item {
  display: flex;
  gap: 36px;
  align-items: stretch;
}
.flow-step-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}
.flow-step {
  width: 88px; height: 88px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-lt) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-shrink: 0;
  box-shadow: 0 6px 24px rgba(48,79,254,.35);
}
.flow-num {
  font-size: 11px; font-weight: 900;
  color: rgba(255,255,255,.75);
  letter-spacing: .12em;
  line-height: 1;
}
.flow-icon { font-size: 32px !important; color: #fff; }
.flow-connector {
  width: 2px;
  flex: 1;
  min-height: 32px;
  background: linear-gradient(to bottom, var(--blue), rgba(48,79,254,.08));
  margin: 6px 0;
}
.flow-body {
  padding: 8px 0 48px;
  flex: 1;
}
.flow-item:last-child .flow-body { padding-bottom: 0; }
.flow-body h3 {
  font-size: 20px; font-weight: 700;
  color: var(--text); margin-bottom: 12px;
  line-height: 1;
  padding-top: 22px;
}
.flow-body p { font-size: 14px; color: var(--text-sub); line-height: 1.9; }

/* ========================================
   Contact
   ======================================== */
.contact-section {
  background: linear-gradient(135deg, var(--gray-50) 0%, #eef3ff 100%);
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 72px;
  align-items: start;
}
.contact-left .section-title::after { left: 0; }
.contact-left p {
  font-size: 15px; color: var(--text-sub);
  line-height: 1.9; margin-bottom: 32px;
  margin-top: -8px;
}
.contact-info-list { display: flex; flex-direction: column; gap: 12px; }
.contact-info-list li {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 700; color: var(--text);
}
.contact-info-list .material-icons-round { color: var(--blue); font-size: 20px !important; }

.contact-right {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 13px; font-weight: 700; color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.required {
  font-size: 10px; font-weight: 700;
  color: #ef4444;
  background: #fef2f2;
  padding: 2px 7px; border-radius: 4px;
}
.form-group input,
.form-group select,
.form-group textarea {
  border: 1.5px solid var(--gray-100);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 15px; font-family: inherit;
  color: var(--text);
  background: var(--gray-50);
  outline: none;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(48,79,254,.12);
}
.input-error {
  border-color: #ef4444 !important;
  background: #fff5f5 !important;
  box-shadow: 0 0 0 3px rgba(239,68,68,.12) !important;
}
.field-error-msg {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: #ef4444;
  font-weight: 500;
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-group select { cursor: pointer; appearance: none; }

.submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--blue);
  color: #fff;
  border: none; border-radius: 50px;
  padding: 16px 36px;
  font-size: 16px; font-weight: 700;
  cursor: pointer; font-family: inherit;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 6px 24px rgba(48,79,254,.35);
  width: 100%;
}
.submit-btn:hover { background: #1a3ae8; transform: translateY(-2px); box-shadow: 0 10px 32px rgba(48,79,254,.45); }
.submit-btn:active { transform: translateY(0); }
.submit-btn .material-icons-round { font-size: 18px !important; }

.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 48px 24px;
  text-align: center;
}
.form-success .material-icons-round { font-size: 56px !important; color: #22c55e; }
.form-success p { font-size: 15px; color: var(--text-sub); line-height: 1.8; }

/* ========================================
   Floating CTA
   ======================================== */
.floating-cta {
  position: fixed;
  bottom: 28px; right: 28px;
  z-index: 90;
  opacity: 0; transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition);
  pointer-events: none;
}
.floating-cta.visible {
  opacity: 1; transform: none;
  pointer-events: auto;
}
.floating-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--blue);
  color: #fff;
  padding: 14px 24px;
  border-radius: 50px;
  font-size: 14px; font-weight: 700;
  box-shadow: 0 8px 32px rgba(48,79,254,.45);
  transition: background var(--transition), transform var(--transition);
}
.floating-btn:hover { background: #1a3ae8; transform: translateY(-2px); }
.floating-btn .material-icons-round { font-size: 18px !important; }

/* ========================================
   Footer
   ======================================== */
.footer { background: var(--dark); padding: 52px 40px; }
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 28px;
}
.footer-brand {
  font-size: 20px; font-weight: 900;
  color: #fff;
}
.footer-brand p {
  font-size: 13px; font-weight: 400;
  color: rgba(255,255,255,.4);
  margin-top: 4px;
}
.footer-nav {
  display: flex; flex-wrap: wrap; gap: 24px 32px;
}
.footer-nav a {
  font-size: 13px; color: rgba(255,255,255,.5);
  transition: color var(--transition);
}
.footer-nav a:hover { color: #fff; }
.footer-privacy { color: rgba(255,255,255,.3) !important; }
.footer-copy {
  font-size: 12px; color: rgba(255,255,255,.25);
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,.06);
}

/* ========================================
   Modal
   ======================================== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(5,13,31,.75);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: none;
  align-items: center; justify-content: center;
  padding: 24px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff; border-radius: var(--radius-lg);
  padding: 48px; max-width: 580px; width: 100%;
  max-height: 80vh; overflow-y: auto;
  position: relative;
}
.modal h2 { font-size: 22px; font-weight: 900; margin-bottom: 20px; }
.modal h3 { font-size: 15px; font-weight: 700; margin: 20px 0 8px; }
.modal p { font-size: 14px; color: var(--text-sub); line-height: 1.8; }
.modal-close {
  position: absolute; top: 16px; right: 16px;
  background: var(--gray-50); border: none;
  border-radius: 50%; width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-sub);
  transition: background var(--transition);
}
.modal-close:hover { background: var(--gray-100); }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .merits-grid { grid-template-columns: repeat(2,1fr); }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .stat-item:nth-child(2) { border-right: none; }
}

@media (max-width: 900px) {
  .nav { display: none; }
  .hamburger { display: block; }
  .container { padding: 0 24px; }
  .section { padding: 72px 0; }
  .necessity-grid { grid-template-columns: 1fr; }
  .equipment-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .contact-right { padding: 28px; }
  .reason-item:hover { margin: 0; padding: 36px 0; }
  .footer { padding: 40px 24px; }
  .floating-cta { bottom: 20px; right: 20px; }
}

@media (max-width: 680px) {
  .header-inner { padding: 0 24px; }
  .hero-content { padding: 110px 24px 80px; }
  .hero-title { font-size: clamp(30px, 8vw, 48px); }
  .hero-actions { flex-direction: column; }
  .merits-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .modal { padding: 28px; }
}