/*
Theme Name: undermountain-v2
Theme URI: https://undermountain.co.uk
Author: 株式会社undermountain
Description: AI × ものづくりで製造業の未来を切り拓く企業サイト
Version: 2.0.0
Text Domain: undermountain-v2
*/

/* ================================================
   undermountain — Main Stylesheet
   Mobile-first, min-width breakpoints
   ================================================ */

/* ---------- Design Tokens ---------- */
:root {
  --color-base: #F8F5F2;
  --color-warm: #F5F0EB;
  --color-white: #FFFFFF;
  --color-dark: #1A1A1A;
  --color-sub: #666666;
  --color-accent: #1B2B4B;
  --color-blue: #3B7DDD;
  --color-footer: #262626;

  --font-main: 'Inter', 'Noto Sans JP', sans-serif;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --header-h: 80px;
  --container-w: 1200px;
  --gap: 30px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-dark);
  background: var(--color-base);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { background: none; border: none; cursor: pointer; font: inherit; }

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .container { padding: 0 40px; }
}
@media (min-width: 1440px) {
  .container { padding: 0; }
}

.section-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-blue);
  margin-bottom: 8px;
}
.section-label--light { color: rgba(255,255,255,0.6); }

.section-title {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-title--light { color: var(--color-white); }

.section-sub {
  font-size: 15px;
  color: var(--color-sub);
  margin-bottom: 40px;
}
.section-sub--light { color: rgba(255,255,255,0.7); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-md);
  padding: 14px 32px;
  transition: opacity 0.2s, transform 0.2s;
}
.btn:hover { opacity: 0.85; transform: translateY(-1px); }

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn--secondary {
  background: var(--color-white);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.btn--light {
  background: var(--color-white);
  color: var(--color-accent);
}
.btn--sm {
  font-size: 14px;
  padding: 10px 24px;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--color-white);
  z-index: 100;
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}
.header__inner {
  max-width: 1440px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 32px;
}
.header__logo {
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: 700;
  color: var(--color-accent);
  white-space: nowrap;
}
.header__nav { display: none; }
.header__nav-list {
  display: flex;
  gap: 28px;
}
.header__nav-list a {
  font-size: 14px;
  transition: color 0.2s;
}
.header__nav-list a:hover { color: var(--color-blue); }

.header__cta { display: none; margin-left: auto; }

.header__burger {
  margin-left: auto;
  width: 28px;
  height: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.header__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-dark);
  transition: transform 0.3s, opacity 0.3s;
}
.header__burger.is-open span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.header__burger.is-open span:nth-child(2) { opacity: 0; }
.header__burger.is-open span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

@media (min-width: 1024px) {
  .header__inner { padding: 0 40px; }
  .header__nav { display: block; }
  .header__cta { display: inline-flex; }
  .header__burger { display: none; }
}

/* Mobile nav overlay */
.header__nav.is-open {
  display: flex;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0; bottom: 0;
  background: var(--color-white);
  z-index: 99;
  padding: 40px 20px;
}
.header__nav.is-open .header__nav-list {
  flex-direction: column;
  gap: 32px;
}
.header__nav.is-open .header__nav-list a {
  font-size: 18px;
}

/* ---------- Hero ---------- */
.hero {
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
  background: var(--color-accent);
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding: 80px 20px;
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-height: 500px;
  justify-content: center;
}
.hero__label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-blue);
  margin-bottom: 16px;
}
.hero__title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
  color: var(--color-white);
}
.hero__sub {
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 600px;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero__actions .btn--secondary {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.5);
}
.hero__actions .btn--secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}

@media (min-width: 1024px) {
  .hero__inner {
    padding: 100px 120px;
    min-height: 620px;
  }
  .hero__bg img {
    opacity: 0.3;
  }
}

/* ---------- Service ---------- */
.service {
  padding: 80px 0;
}
.service__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  display: block;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.card__img {
  height: 160px;
  overflow: hidden;
}
.card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.card:hover .card__img img { transform: scale(1.05); }
.card__body { padding: 20px; }
.card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.card__desc {
  font-size: 13px;
  color: var(--color-sub);
}

@media (min-width: 768px) {
  .service__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .service__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Strength ---------- */
.strength {
  padding: 80px 0;
  background: var(--color-white);
}

.strength__flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 60px;
}
.flow-step {
  background: var(--color-accent);
  color: var(--color-white);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  text-align: center;
  padding: 20px 0;
  width: 100%;
  max-width: 240px;
  border-radius: var(--radius-md);
}
.flow-arrow {
  display: none;
  width: 24px;
  height: 24px;
  position: relative;
}
.flow-arrow::after {
  content: '';
  position: absolute;
  top: 50%; left: 0;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
}
.flow-arrow::before {
  content: '';
  position: absolute;
  top: 50%; right: 0;
  width: 10px;
  height: 10px;
  border-top: 2px solid var(--color-accent);
  border-right: 2px solid var(--color-accent);
  transform: translateY(-50%) rotate(45deg);
}
@media (min-width: 768px) {
  .flow-arrow { display: block; }
  .strength__flow { flex-wrap: nowrap; }
}

.strength__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
  text-align: center;
}
.stat__number {
  display: block;
  font-size: clamp(36px, 5vw, 48px);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
}
.stat__number small {
  font-size: 0.6em;
}
.stat--ai .stat__number { color: var(--color-blue); }
.stat__label {
  font-size: 14px;
  color: var(--color-sub);
  margin-top: 4px;
  display: block;
}

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

/* ---------- Portfolio ---------- */
.portfolio {
  padding: 80px 0;
}
.portfolio__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}
.pf-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}
.pf-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.pf-card__img {
  height: 200px;
  overflow: hidden;
}
.pf-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.pf-card__body { padding: 20px; }
.pf-card__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-blue);
  background: rgba(59,125,221,0.08);
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.pf-card__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.pf-card__desc {
  font-size: 13px;
  color: var(--color-sub);
}
.portfolio__more {
  text-align: center;
  margin-top: 40px;
}

@media (min-width: 768px) {
  .portfolio__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .portfolio__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- DX / AI ---------- */
.dx {
  padding: 80px 0;
  background: var(--color-accent);
}
.dx__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 40px;
}
.dx__card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.dx__card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}
.dx__card-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}
.dx__more { text-align: center; }

@media (min-width: 768px) {
  .dx__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- News ---------- */
.news {
  padding: 80px 0;
}
.news__list {
  border-top: 1px solid #E0E0E0;
}
.news__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 20px 0;
  border-bottom: 1px solid #E0E0E0;
}
.news__date {
  font-size: 13px;
  color: var(--color-sub);
  flex-shrink: 0;
}
.news__cat {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-blue);
  background: rgba(59,125,221,0.08);
  padding: 2px 10px;
  border-radius: 4px;
  flex-shrink: 0;
}
.news__link {
  font-size: 15px;
  width: 100%;
  transition: color 0.2s;
}
.news__link:hover { color: var(--color-blue); }

@media (min-width: 768px) {
  .news__link { width: auto; }
}

/* ---------- CTA ---------- */
.cta {
  padding: 60px 0;
  background: var(--color-warm);
  text-align: center;
}
.cta__inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}
.cta__title {
  font-size: clamp(24px, 3vw, 28px);
  font-weight: 700;
  margin-bottom: 12px;
}
.cta__sub {
  font-size: 15px;
  color: var(--color-sub);
  margin-bottom: 24px;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-footer);
  color: rgba(255,255,255,0.6);
  padding: 60px 0 40px;
}
.footer__inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}
.footer__top {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-bottom: 40px;
}
.footer__logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-white);
}
.footer__nav-group {
  display: flex;
  gap: 60px;
}
.footer__nav-heading {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}
.footer__nav-col a {
  font-size: 13px;
  display: block;
  padding: 4px 0;
  transition: color 0.2s;
}
.footer__nav-col a:hover { color: var(--color-white); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
}
.footer__copyright {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

@media (min-width: 768px) {
  .footer__top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
  .footer__inner { padding: 0 40px; }
}

/* ---------- Page Hero (Sub pages) ---------- */
.page-hero {
  padding-top: var(--header-h);
  background: var(--color-accent);
  position: relative;
  overflow: hidden;
}
.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}
.page-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 60px 20px;
  text-align: center;
}
.page-hero__title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}
.page-hero__sub {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
}
@media (min-width: 768px) {
  .page-hero__inner { padding: 80px 40px; }
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--color-sub);
}
.breadcrumb__list,
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
  list-style: none;
}
.breadcrumb__list li::after {
  content: '>';
  margin-left: 8px;
  color: #ccc;
}
.breadcrumb__list li:last-child::after { content: ''; margin: 0; }
.breadcrumb__list a:hover { color: var(--color-blue); }

/* ---------- Sub-page Content ---------- */
.page-section {
  padding: 80px 0;
}
.page-section--white { background: var(--color-white); }
.page-section--warm { background: var(--color-warm); }

/* ---------- Service Detail ---------- */
.sv-overview {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
.sv-overview__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.sv-overview__img img {
  width: 100%;
  height: auto;
}
.sv-overview__text h3 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  margin-bottom: 16px;
}
.sv-overview__text p {
  color: var(--color-sub);
  line-height: 1.8;
  margin-bottom: 16px;
}
@media (min-width: 768px) {
  .sv-overview { grid-template-columns: 1fr 1fr; }
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.feature-card__icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.feature-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-card__desc {
  font-size: 14px;
  color: var(--color-sub);
}
@media (min-width: 768px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Portfolio Page ---------- */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}
.filter-tab {
  font-size: 14px;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 100px;
  border: 1px solid #ddd;
  color: var(--color-sub);
  cursor: pointer;
  transition: all 0.2s;
}
.filter-tab:hover,
.filter-tab.is-active {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

/* Portfolio Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.is-open { display: flex; }

.modal {
  background: var(--color-white);
  border-radius: 16px;
  max-width: 1000px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  display: grid;
  grid-template-columns: 1fr;
}
.modal__img {
  height: 300px;
  overflow: hidden;
}
.modal__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.modal__body {
  padding: 32px;
}
.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  font-size: 24px;
  color: var(--color-white);
  background: rgba(0,0,0,0.5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-blue);
  background: rgba(59,125,221,0.08);
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.modal__title {
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 700;
  margin-bottom: 20px;
}
.modal__detail-group { margin-bottom: 20px; }
.modal__detail-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-blue);
  margin-bottom: 4px;
}
.modal__detail-text {
  font-size: 14px;
  color: var(--color-sub);
  line-height: 1.7;
}
.modal__info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}
.modal__info-item {
  font-size: 13px;
}
.modal__info-label {
  font-weight: 700;
  color: var(--color-dark);
}
.modal__info-value {
  color: var(--color-sub);
}
@media (min-width: 768px) {
  .modal {
    grid-template-columns: 1fr 1fr;
    max-height: 80vh;
  }
  .modal__img {
    height: auto;
    min-height: 100%;
  }
}

/* ---------- DX Page (sub-page) ---------- */
.dx-page__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.dx-page__card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.dx-page__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.dx-page__card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.dx-page__card-desc {
  font-size: 13px;
  color: var(--color-sub);
}
@media (min-width: 768px) {
  .dx-page__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .dx-page__grid { grid-template-columns: repeat(4, 1fr); }
}

.dx-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.dx-stat-card {
  background: var(--color-accent);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.dx-stat-card__number {
  font-size: clamp(48px, 6vw, 64px);
  font-weight: 700;
  color: var(--color-blue);
  line-height: 1.2;
}
.dx-stat-card__label {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
}
.dx-stat-card__desc {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
@media (min-width: 768px) {
  .dx-stats { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- DX Page (top-page section) ---------- */
.dx-case {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 40px;
}
.dx-case__card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border-left: 4px solid var(--color-blue);
}
.dx-case__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.dx-case__badge {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-white);
  background: var(--color-blue);
  padding: 4px 12px;
  border-radius: 100px;
}
.dx-case__title {
  font-size: 18px;
  font-weight: 700;
}
.dx-case__ba {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.dx-case__before,
.dx-case__after {
  padding: 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
}
.dx-case__before {
  background: #FFF5F5;
  color: #C53030;
}
.dx-case__after {
  background: #F0FFF4;
  color: #276749;
}
.dx-case__before strong,
.dx-case__after strong {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.dx-case__result {
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-sub);
}
.dx-case__number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-blue);
}
@media (min-width: 768px) {
  .dx-case { grid-template-columns: repeat(2, 1fr); }
  .dx-case__ba { grid-template-columns: 1fr 1fr; }
}

/* ---------- Blog Page ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}
.blog-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  display: block;
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.blog-card__img {
  height: 180px;
  overflow: hidden;
}
.blog-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.blog-card:hover .blog-card__img img { transform: scale(1.05); }
.blog-card__body { padding: 20px; }
.blog-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.blog-card__date {
  font-size: 13px;
  color: var(--color-sub);
}
.blog-card__cat {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-blue);
  background: rgba(59,125,221,0.08);
  padding: 2px 10px;
  border-radius: 4px;
}
.blog-card__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.blog-card__excerpt {
  font-size: 13px;
  color: var(--color-sub);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
@media (min-width: 768px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Blog Article Detail */
.blog-article {
  max-width: 800px;
  margin: 0 auto;
}
.blog-article__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--color-sub);
}
.blog-article__cat {
  background: var(--color-blue);
  color: var(--color-white);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
}
.blog-article__hero {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: 40px;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.blog-article__body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
}
.blog-article__body h2 {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-blue);
}
.blog-article__body h3 {
  font-size: clamp(17px, 2.5vw, 22px);
  font-weight: 700;
  margin: 32px 0 12px;
}
.blog-article__body p {
  margin-bottom: 20px;
}
.blog-article__body ul,
.blog-article__body ol {
  margin: 0 0 20px 1.5em;
}
.blog-article__body li {
  margin-bottom: 8px;
}
.blog-article__nav {
  display: flex;
  justify-content: center;
  margin-top: 48px;
}
.blog-article__nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border: 1px solid #ddd;
  border-radius: var(--radius-lg);
  font-size: 14px;
  color: var(--color-text);
  transition: background 0.3s;
}
.blog-article__nav a:hover {
  background: var(--color-bg);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
}
.pagination__item {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 1px solid #ddd;
  color: var(--color-sub);
  transition: all 0.2s;
}
.pagination__item:hover,
.pagination__item.is-active {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

/* ---------- About Page ---------- */
.about-message {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
.about-message__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.about-message__img img {
  width: 100%;
  height: auto;
}
.about-message__text h3 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  margin-bottom: 16px;
}
.about-message__text p {
  color: var(--color-sub);
  line-height: 1.8;
  margin-bottom: 16px;
}
.about-message__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark);
  margin-top: 24px;
}
@media (min-width: 768px) {
  .about-message { grid-template-columns: 1fr 1.2fr; }
}

.company-table {
  width: 100%;
  border-collapse: collapse;
}
.company-table th,
.company-table td {
  text-align: left;
  padding: 16px 0;
  border-bottom: 1px solid #eee;
  font-size: 15px;
  vertical-align: top;
}
.company-table th {
  font-weight: 700;
  width: 140px;
  color: var(--color-dark);
}
.company-table td {
  color: var(--color-sub);
}

.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #e0e0e0;
}
.timeline__item {
  position: relative;
  margin-bottom: 32px;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-blue);
}
.timeline__year {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-blue);
  margin-bottom: 4px;
}
.timeline__text {
  font-size: 15px;
  color: var(--color-sub);
}

/* ---------- Contact Page ---------- */
.contact-form {
  max-width: 700px;
  margin: 0 auto;
}
.form-group {
  margin-bottom: 24px;
}
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}
.form-label .required {
  font-size: 12px;
  color: #E53E3E;
  margin-left: 8px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: var(--font-main);
  border: 1px solid #ddd;
  border-radius: var(--radius-md);
  transition: border-color 0.2s;
  background: var(--color-white);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-blue);
}
.form-textarea {
  min-height: 160px;
  resize: vertical;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}
.contact-form .btn { width: 100%; }
.contact-info {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 60px;
}
.contact-info__card {
  text-align: center;
  padding: 32px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
}
.contact-info__icon {
  font-size: 28px;
  margin-bottom: 12px;
}
.contact-info__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.contact-info__text {
  font-size: 14px;
  color: var(--color-sub);
}
@media (min-width: 768px) {
  .contact-info { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Scroll Animation ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}