/* ==========================================
   CSS Custom Properties
   ========================================== */
:root {
  --bg: #FAF8F4;
  --text: #1A1A1A;
  --accent: #FFE34D;
  --accent-text: #000000;
  --hover: #3D63CC;
  --border: #C8C8C4;
  --nav-h: 52px;
  --label-w: 120px;
  --pad: 20px;
}

/* ==========================================
   Reset & Base
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Noto Sans JP', sans-serif;
  font-size: 14px;
  line-height: 1.7;
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
}

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

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

/* ==========================================
   Navigation
   ========================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 4px;
  text-transform: uppercase;
}

.nav-logo a {
  color: inherit;
}

.nav-links {
  display: flex;
  gap: 18px;
}

.nav-links a {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  transition: color 0.2s;
  opacity: 0.6;
}

.nav-links a:hover {
  color: var(--text);
  opacity: 1;
}

/* ==========================================
   First View
   ========================================== */
.fv {
  padding: 72px var(--pad) 120px;
  position: relative;
}

.fv-eyebrow {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 20px;
}

.fv-headline {
  font-size: clamp(28px, 8vw, 64px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.fv-sub {
  font-size: 13px;
  line-height: 1.8;
  opacity: 0.65;
  margin-bottom: 32px;
}

.fv-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-text);
  background: var(--accent);
  border: none;
  padding: 14px 32px;
  border-radius: 4px;
  transition: opacity 0.2s;
  cursor: pointer;
}

.fv-cta:hover {
  opacity: 0.8;
}

.fv-eyebrow,
.fv-headline,
.fv-sub,
.fv-cta {
  opacity: 0;
}

/* ==========================================
   Section Layout (2-column: label + content)
   ========================================== */
.section {
  overflow: visible;
  scroll-margin-top: var(--nav-h);
  margin-bottom: 10rem;
}

.section:last-of-type {
  margin-bottom: 0;
}

.section-wrapper {
  display: flex;
  align-items: flex-start;
  overflow: visible;
}

.section-label {
  width: var(--label-w);
  flex-shrink: 0;
  position: sticky;
  top: var(--nav-h);
  height: fit-content;
  padding: 32px 0 32px 16px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  overflow: visible;
  background: var(--bg);
  z-index: 10;
}

.section-label-en {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
  display: block;
  position: relative;
  overflow: hidden;
  padding: 2px 4px;
  white-space: nowrap;
}

.section-label-en::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 100%;
  background: var(--accent);
  transition: width 0.3s ease;
  z-index: -1;
}

.section-label:hover .section-label-en::before,
.section-label.active .section-label-en::before {
  width: 100%;
}

.section-label-ja {
  display: none;
}

.section-content {
  flex: 1;
  padding: 32px var(--pad);
  min-width: 0;
  overflow: visible;
}

/* ==========================================
   Tag Filter
   ========================================== */
.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 28px;
}

.tag-btn {
  padding: 5px 11px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s;
  letter-spacing: 0.3px;
}

.tag-btn.active,
.tag-btn:hover {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

/* ==========================================
   Work Category
   ========================================== */
.work-category {
  margin-bottom: 36px;
}

.work-category:last-child {
  margin-bottom: 0;
}

.category-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.5;
}

.category-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ==========================================
   Work Card
   ========================================== */
.work-card {
  border: 1px solid var(--border);
  margin-bottom: 0;  /* 14px → 0 */
  background: #fff;
  transition: border-color 0.2s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;  /* 追加 */
}

.work-card:last-child {
  margin-bottom: 0;
}

.work-card:hover {
  border-color: var(--hover);
}

.work-card.hidden {
  display: none;
}

/* Thumbnail placeholder (X pattern) */
.card-thumbnail {
  width: 100%;
  height: 200px;
  background: #ECEAE4;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border); 
}

.card-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.card-thumbnail.placeholder::before,
.card-thumbnail.placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
}

.card-thumbnail.placeholder::before {
  background: linear-gradient(
    to bottom right,
    transparent calc(50% - 0.5px),
    var(--border) calc(50% - 0.5px),
    var(--border) calc(50% + 0.5px),
    transparent calc(50% + 0.5px)
  );
}

.card-thumbnail.placeholder::after {
  background: linear-gradient(
    to bottom left,
    transparent calc(50% - 0.5px),
    var(--border) calc(50% - 0.5px),
    var(--border) calc(50% + 0.5px),
    transparent calc(50% + 0.5px)
  );
}

/* Card Body */
.card-body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
}

.card-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  flex: 1;
}

.card-ext-link {
  font-size: 15px;
  opacity: 0.4;
  flex-shrink: 0;
  margin-top: 1px;
  transition: all 0.2s;
}

.card-ext-link:hover {
  color: var(--hover);
  opacity: 1;
}

.card-challenge {
  font-size: 12px;
  border-left: 2px solid var(--accent);
  padding-left: 10px;
  margin-bottom: 10px;
  line-height: 1.6;
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-desc {
  font-size: 12px;
  opacity: 0.65;
  margin-bottom: 12px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.tag-chip {
  font-size: 10px;
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.15s;
  background: transparent;
  font-family: inherit;
}

.tag-chip:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
}

@media (max-width: 768px) {
  .work-card-overlay {
    display: none;
  }
}

/* Coming Soon card */
.work-card.coming-soon {
  background: transparent;
  border-style: dashed;
}

.work-card.coming-soon .card-body {
  padding: 30px 16px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.coming-soon-text {
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  opacity: 0.3;
}

/* ==========================================
   About Section (index page)
   ========================================== */
.about-catch {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.about-sub {
  font-size: 13px;
  line-height: 1.9;
  opacity: 0.65;
  margin-bottom: 24px;
}

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color 0.2s;
}

.more-link:hover {
  color: var(--hover);
}

/* ==========================================
   Skill Section
   ========================================== */
.skill-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skill-box {
  border: 1px solid var(--border);
  padding: 14px 16px;
}

.skill-name {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.skill-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.skill-col-label {
  display: block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.45;
  margin-bottom: 5px;
}

.skill-col-val {
  font-size: 11px;
  line-height: 1.6;
}

/* ==========================================
   Info Section
   ========================================== */
.info-list {
  margin-bottom: 24px;
}

.info-row {
  display: flex;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}

.info-row:first-child {
  border-top: 1px solid var(--border);
}

.info-dt {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.45;
  min-width: 68px;
  flex-shrink: 0;
}

.info-dd {
  font-size: 13px;
  line-height: 1.6;
}

.cta-btn {
  display: block;
  width: 100%;
  padding: 15px 16px;
  background: transparent;
  color: var(--text);
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.3px;
  border: 1px solid var(--text);
  cursor: pointer;
  font-family: inherit;
  position: relative;
  overflow: hidden;
  z-index: 1;
  transition: color 0.3s;
}

.cta-btn::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 100%;
  background: var(--accent);
  transition: width 0.3s ease;
  z-index: -1;
}

.cta-btn:hover::before {
  width: 100%;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
  padding: 20px;
  text-align: center;
  font-size: 11px;
  opacity: 0.35;
}

/* ==========================================
   About Page (blue / serious theme)
   ========================================== */
.page-about {
  --bg: #0C1A2E;
  --text: #DDE8FF;
  --accent: #3D63CC;
  --accent-text: #ffffff;
  --hover: #7FA4FF;
  --border: rgba(255, 255, 255, 0.1);
  background: var(--bg);
  color: var(--text);
}

.page-about .nav {
  background: #081222;
  border-bottom-color: var(--border);
}

.page-about .tag-chip,
.page-about .skill-box,
.page-about .work-card {
  background: rgba(255, 255, 255, 0.04);
}

/* About page hero */
.about-hero {
  padding: 40px var(--pad) 32px;
  border-bottom: 1px solid var(--border);
}

.about-hero-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 16px;
}

.about-hero-title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.about-hero-sub {
  font-size: 13px;
  opacity: 0.55;
  line-height: 1.8;
}

/* About page sections */
.about-section {
  padding: 32px var(--pad);
  border-bottom: 1px solid var(--border);
}

.about-section-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 20px;
}

/* Career timeline */
.career-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.career-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.career-item:first-child {
  padding-top: 0;
}

.career-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.career-year {
  font-size: 11px;
  font-weight: 600;
  opacity: 0.4;
  min-width: 48px;
  flex-shrink: 0;
  padding-top: 2px;
  letter-spacing: 0.5px;
}

.career-text {
  font-size: 13px;
  line-height: 1.7;
}

.career-text strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 3px;
}

.career-text span {
  font-size: 12px;
  opacity: 0.55;
}

/* Thought flow diagram */
.flow-diagram {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 24px;
}

.flow-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.flow-step:first-child {
  padding-top: 0;
}

.flow-step:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.flow-num {
  width: 28px;
  height: 28px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}

.flow-body {
  flex: 1;
}

.flow-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
}

.flow-desc {
  font-size: 12px;
  opacity: 0.55;
  line-height: 1.7;
}

.flow-arrow {
  text-align: center;
  opacity: 0.2;
  font-size: 14px;
  margin: 2px 0;
}

.about-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  opacity: 0.5;
  transition: opacity 0.2s;
  padding: 24px var(--pad);
  display: flex;
}

.about-back-link:hover {
  opacity: 1;
  color: var(--hover);
}

/* ==========================================
   Work Detail Page
   ========================================== */
.work-detail-hero {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #ECEAE4;
  position: relative;
  overflow: hidden;
}

.work-detail-hero.placeholder::before,
.work-detail-hero.placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
}

.work-detail-hero.placeholder::before {
  background: linear-gradient(
    to bottom right,
    transparent calc(50% - 0.5px),
    var(--border) calc(50% - 0.5px),
    var(--border) calc(50% + 0.5px),
    transparent calc(50% + 0.5px)
  );
}

.work-detail-hero.placeholder::after {
  background: linear-gradient(
    to bottom left,
    transparent calc(50% - 0.5px),
    var(--border) calc(50% - 0.5px),
    var(--border) calc(50% + 0.5px),
    transparent calc(50% + 0.5px)
  );
}

.work-detail-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-detail-body {
  padding: 28px var(--pad);
}

.work-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 14px;
}

.work-detail-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 28px;
}

.work-detail-section {
  margin-bottom: 28px;
}

.work-detail-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 10px;
}

.work-detail-text {
  font-size: 13px;
  line-height: 1.85;
  opacity: 0.85;
}

.work-detail-divider {
  height: 1px;
  background: var(--border);
  margin: 28px 0;
}

.work-tool-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.work-tool-chip {
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 2px;
}

.work-cta-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  padding: 13px 20px;
  background: var(--accent);
  color: var(--accent-text);
  border-radius: 2px;
  transition: all 0.2s;
  margin-top: 4px;
}

.work-cta-link:hover {
  background: var(--hover);
  color: #fff;
}

.work-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  padding: var(--pad);
  opacity: 0.45;
  border-bottom: 1px solid var(--border);
  width: 100%;
  transition: opacity 0.2s;
}

.work-back-link:hover {
  opacity: 1;
  color: var(--hover);
}

/* ==========================================
   About Name (index page v2)
   ========================================== */
.about-name {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

/* ==========================================
   Skill Summary
   ========================================== */
.skill-summary {
  font-size: 12px;
  line-height: 1.6;
  opacity: 0.75;
  margin-bottom: 14px;
}

/* ==========================================
   Info Links (v2)
   ========================================== */
.info-links {
  list-style: none;
  margin-bottom: 32px;
}

.info-link-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s;
}

.info-links li:first-child .info-link-row {
  border-top: 1px solid var(--border);
}

.info-link-row:hover {
  color: var(--hover);
}

.info-link-arrow {
  font-size: 16px;
  opacity: 0.4;
}

/* ==========================================
   Work Cards Grid Wrapper
   ========================================== */
.work-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ==========================================
   And More Link
   ========================================== */
.and-more-link {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  letter-spacing: 0.05em;
  opacity: 0.5;
  margin-top: 12px;
  transition: opacity 0.2s, color 0.2s;
}

.and-more-link:hover {
  opacity: 1;
  color: var(--hover);
}

/* ==========================================
   FV Bird Background
   ========================================== */
.fv-bird-bg {
  display: block;
  width: 100%;
  mix-blend-mode: multiply;
  opacity: 0.55;
  margin-top: -6rem;
  pointer-events: none;
  margin-bottom: 40px;
}

.fv-eyebrow,
.fv-headline,
.fv-sub,
.fv-cta {
  opacity: 0;
}/* ==========================================
   About Icon (index page)
   ========================================== */
.about-name-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.about-name-row .about-name {
  margin-bottom: 0;
}

.about-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 30%;
  flex-shrink: 0;
}

/* ==========================================
   RO Detail Page
   ========================================== */

/* Hero */
.ro-hero {
  width: 100%;
  height: 420px;
  position: relative;
  overflow: hidden;
}

.ro-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.ro-hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
}

/* Overview */
.ro-overview {
  padding: 48px var(--pad);
  border-bottom: 1px solid var(--border);
}

.ro-overview-grid {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 40px;
  align-items: start;
}

.ro-eyebrow {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 12px;
}

.ro-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.3px;
  margin-bottom: 16px;
}

.ro-desc {
  font-size: 13px;
  line-height: 1.9;
  opacity: 0.7;
}

.ro-meta-table {
  border: 1px solid var(--border);
}

.ro-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.ro-meta-row:last-child {
  border-bottom: none;
}

.ro-meta-key {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  opacity: 0.45;
  flex-shrink: 0;
}

.ro-meta-val {
  font-size: 12px;
  text-align: right;
}

.ro-meta-val a {
  color: var(--hover);
  transition: opacity 0.2s;
}

.ro-meta-val a:hover {
  opacity: 0.7;
}

/* Thinking */
.ro-thinking {
  padding: 48px var(--pad);
  border-bottom: 1px solid var(--border);
}

.ro-section-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 20px;
}

.ro-block {
  border: 1px solid var(--border);
  padding: 20px;
  margin-bottom: 10px;
  background: #fff;
}

.ro-block:last-child {
  margin-bottom: 0;
}

.ro-block-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.4;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.ro-block-text {
  font-size: 13px;
  line-height: 1.9;
  opacity: 0.8;
}

/* Visuals */
.ro-visuals {
  padding: 48px var(--pad);
  border-bottom: 1px solid var(--border);
}

.ro-visuals-single {
  margin-bottom: 16px;
}

.ro-visuals-single .ro-visuals-img {
  aspect-ratio: unset;
  max-height: 300px;
  width: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

.ro-visuals-img {
  width: 100%;
  display: block;
  border: 1px solid var(--border);
}

.ro-visuals-caption {
  font-size: 10px;
  opacity: 0.4;
  text-align: center;
  margin-top: 6px;
  margin-bottom: 16px;
}

.ro-visuals-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.ro-visuals-grid-2 .ro-visuals-img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: top;
}

.ro-visuals-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.ro-visuals-sp-img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  display: block;
  border: 1px solid var(--border);
}

.ro-visuals-sp-wrap {
  display: inline-block;
  width: 120px;
}

.ro-visuals-sp-wrap .ro-visuals-caption {
  text-align: center;
  width: 100%;
}

/* Tools */
.ro-tools {
  padding: 48px var(--pad);
  border-bottom: 1px solid var(--border);
}

.ro-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

/* CTA */
.ro-cta {
  padding: 48px var(--pad);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.ro-back-btn {
  font-size: 12px;
  font-weight: 600;
  opacity: 0.45;
  transition: opacity 0.2s;
}

.ro-back-btn:hover {
  opacity: 1;
}

/* ==========================================
   Responsive: Mobile (≤768px)
   ========================================== */
@media (max-width: 768px) {
  .section-wrapper {
    flex-direction: column;
  }

  .section-label {
    width: 100%;
    padding: 20px 20px 12px;
    border-bottom: 1px solid var(--border);
    position: static;
  }

  .skill-cols {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .ro-hero {
    height: 240px;
  }

  .ro-overview {
    padding: 28px var(--pad);
  }

  .ro-overview-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .ro-thinking,
  .ro-visuals,
  .ro-tools,
  .ro-cta {
    padding: 28px var(--pad);
  }

  .ro-visuals-grid-2 {
    grid-template-columns: 1fr;
  }

  .ro-visuals-grid-3 {
    grid-template-columns: 1fr 1fr;
  }

  .ro-cta {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

/* ==========================================
   Responsive: Desktop (≥769px)
   ========================================== */
@media (min-width: 769px) {
  .nav {
    padding: 0 48px;
  }

  .fv {
    padding: 60px 48px 90px;
  }

  .section-label {
    width: 180px;
    padding: 48px 0 48px 40px;
  }

  .section-content {
    padding: 48px 40px;
  }

  .work-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .work-card.coming-soon {
    grid-column: 1 / -1;
  }
}

/* ==========================================
   Lightbox
   ========================================== */
.ro-lightbox-trigger {
  cursor: zoom-in;
}

.ro-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  align-items: center;
  justify-content: center;
}

.ro-lightbox.active {
  display: flex;
}

.ro-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
}

.ro-lightbox-inner {
  position: relative;
  z-index: 1;
  max-height: 90vh;
  display: flex;
  align-items: center;
}

.ro-lightbox-inner img {
  max-height: 90vh;
  max-width: 90vw;
  width: auto;
  display: block;
  object-fit: contain;
}

.ro-lightbox-close {
  position: absolute;
  top: -36px;
  right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
  font-family: inherit;
}

.ro-lightbox-close:hover {
  opacity: 1;
}