/* ============================================================
   인치성 | AI Search/SEO Consultant Portfolio
   Dark navy canvas · warm cream type · taxonomy accent colors
   ============================================================ */

:root {
  /* Colors */
  --bg: #0c0e13;            /* deep navy near-black canvas */
  --surface: #191919;       /* nested panel / cards / footer */
  --text: #fffce1;          /* warm cream */
  --muted: #8a8d7e;         /* muted secondary text */
  --border: #42433d;        /* hairline dividers */
  --border-soft: rgba(255, 252, 225, 0.08);

  --red: #ff3b3b;           /* Artience point — hero stat only */
  --green: #0ae448;         /* AI / GEO */
  --blue: #00bae2;          /* Search Data */
  --violet: #9d95ff;        /* Content */
  --orange: #ff8709;        /* Brand */

  /* Typography */
  --font-sans: "Inter Tight", Pretendard, "Apple SD Gothic Neo", "Malgun Gothic",
    ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "DM Mono", ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
    "Apple SD Gothic Neo", "Malgun Gothic", monospace;

  /* Layout */
  --container: 1280px;
  --gutter: 24px;
  --header-h: 64px;
}

/* ---------- Reset & base ---------- */

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  /* 미세한 도트 매트릭스 — AI/디지털 텍스처 */
  background-image: radial-gradient(rgba(255, 252, 225, 0.045) 1px, transparent 1px);
  background-size: 26px 26px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  word-break: keep-all;
}

ul,
ol {
  list-style: none;
}

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

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 2px;
}

[id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

::selection {
  background: var(--text);
  color: var(--bg);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 60;
  background: var(--text);
  opacity: 0.35;
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 100;
  padding: 10px 18px;
  background: var(--surface);
  border: 1px solid var(--text);
  border-radius: 100px;
  font-size: 14px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(12, 14, 19, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background: rgba(12, 14, 19, 0.92);
  border-bottom-color: rgba(255, 252, 225, 0.14);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-h);
}

.logo {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.logo:hover,
.logo:focus-visible {
  color: var(--green);
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  position: relative;
  display: inline-block;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--muted);
  white-space: nowrap;
  transition: color 0.2s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 6px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active {
  color: var(--text);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.active::after {
  transform: scaleX(1);
}

/* ---------- Shared typography ---------- */

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text);
  background: rgba(255, 252, 225, 0.04);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
  padding: 7px 12px;
  margin-bottom: 18px;
}

/* 히어로 신원 블록 (이름 + 역할) */
.hero-identity {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 26px;
}

.hero-name {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.hero-name-en {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.hero-role {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.01em;
  color: var(--muted);
}

.section-headline {
  font-size: clamp(28px, 3.6vw, 48px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 20em;
  margin-bottom: 24px;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(72px, 10vw, 140px) 0 clamp(64px, 8vw, 108px);
}

.hero-bg {
  position: absolute;
  inset: -15% 0;
  pointer-events: none;
  will-change: transform;
  background:
    /* 글로우 — 시스템 대시보드 느낌의 블루/그린 하이라이트 */
    radial-gradient(38% 42% at 82% 12%, rgba(0, 186, 226, 0.16), transparent 70%),
    radial-gradient(30% 36% at 8% 78%, rgba(10, 228, 72, 0.1), transparent 70%),
    radial-gradient(26% 30% at 62% 92%, rgba(157, 149, 255, 0.09), transparent 70%),
    /* 촘촘한 도트 필드 (할프톤) */
    radial-gradient(rgba(255, 252, 225, 0.07) 1px, transparent 1px),
    /* 성긴 큰 도트 — 별처럼 흩어진 픽셀 */
    radial-gradient(rgba(255, 252, 225, 0.16) 1.5px, transparent 1.5px);
  background-size: 100% 100%, 100% 100%, 100% 100%, 22px 22px, 96px 96px;
  background-position: 0 0, 0 0, 0 0, 0 0, 11px 31px;
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 55%, transparent 100%);
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 55%, transparent 100%);
}

/* 픽셀 모자이크 패치 — 레퍼런스의 blurred pixel block 무드 */
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0, 186, 226, 0.2), rgba(0, 186, 226, 0.2)) no-repeat 86% 22% / 90px 90px,
    linear-gradient(rgba(10, 228, 72, 0.12), rgba(10, 228, 72, 0.12)) no-repeat 74% 34% / 60px 60px,
    linear-gradient(rgba(157, 149, 255, 0.14), rgba(157, 149, 255, 0.14)) no-repeat 92% 46% / 70px 70px,
    linear-gradient(rgba(255, 252, 225, 0.06), rgba(255, 252, 225, 0.06)) no-repeat 80% 58% / 50px 50px;
  filter: blur(26px);
}

.hero .container {
  position: relative;
}

.hero-headline {
  font-size: clamp(44px, 6.5vw, 84px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: 28px;
}

.hero-subcopy {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--muted);
  max-width: 620px;
  margin-bottom: 56px;
}

/* Hero stats — 히어로의 일부로 크게 노출 */

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding: 36px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.stat-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.stat-value {
  font-size: clamp(38px, 4.6vw, 66px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.025em;
  white-space: nowrap;
  margin-bottom: 14px;
}

.stat-value--red {
  color: var(--red);
}

.stat-label {
  font-size: 15px;
  line-height: 1.55;
  color: var(--muted);
  max-width: 320px;
}

.hero-tags {
  margin-bottom: 40px;
}

/* ---------- 히어로 AI 검색 시뮬레이션 ---------- */

.hero-visual {
  display: none;
}

@media (min-width: 1280px) {
  html.js .hero-visual {
    display: block;
    position: absolute;
    top: 0;
    right: 32px;
    width: 410px;
    opacity: 0;
    animation: hv-in 0.9s cubic-bezier(0.22, 0.61, 0.36, 1) 0.55s forwards;
  }
}

@media (min-width: 1440px) {
  html.js .hero-visual {
    right: 72px;
    width: 480px;
  }
}

@keyframes hv-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.hv-window {
  position: relative;
  background: rgba(25, 25, 25, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  overflow: hidden;
  animation: hv-float 8s ease-in-out infinite;
}

@keyframes hv-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* HUD 코너 브래킷 */
.hv-window::before,
.hv-window::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
  z-index: 1;
}

.hv-window::before {
  top: 0;
  left: 0;
  border-top: 1px solid rgba(10, 228, 72, 0.5);
  border-left: 1px solid rgba(10, 228, 72, 0.5);
  border-top-left-radius: 10px;
}

.hv-window::after {
  bottom: 0;
  right: 0;
  border-bottom: 1px solid rgba(10, 228, 72, 0.5);
  border-right: 1px solid rgba(10, 228, 72, 0.5);
  border-bottom-right-radius: 10px;
}

.hv-chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-soft);
}

.hv-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 252, 225, 0.14);
}

.hv-title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-left: 10px;
}

.hv-live {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-left: auto;
  animation: hv-pulse 1.6s ease-in-out infinite;
}

@keyframes hv-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

.hv-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 17px 18px;
  border-bottom: 1px solid var(--border-soft);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text);
  min-height: 54px;
}

.hv-icon {
  flex-shrink: 0;
  color: var(--muted);
}

.hv-query {
  white-space: nowrap;
  overflow: hidden;
}

.hv-caret {
  flex-shrink: 0;
  width: 7px;
  height: 15px;
  background: var(--green);
  animation: hv-blink 1s steps(1) infinite;
}

@keyframes hv-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hv-body {
  position: relative;
  padding: 18px;
  min-height: 140px;
}

/* 생각 중 점 3개 */
.hv-thinking {
  position: absolute;
  top: 20px;
  left: 16px;
  display: flex;
  gap: 6px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.is-thinking .hv-thinking {
  opacity: 1;
}

.hv-thinking span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  animation: hv-bounce 1s ease-in-out infinite;
}

.hv-thinking span:nth-child(2) { animation-delay: 0.15s; }
.hv-thinking span:nth-child(3) { animation-delay: 0.3s; }

@keyframes hv-bounce {
  0%, 100% { opacity: 0.25; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-3px); }
}

/* 답변 텍스트 */
.hv-answer {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.45s ease, transform 0.45s ease;
  margin: 0 0 12px;
  word-break: keep-all;
}

.is-answering .hv-answer {
  opacity: 0.92;
  transform: none;
}

/* 출처 인용 칩 */
.hv-cite {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  opacity: 0;
  transform: translateY(5px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.is-cited .hv-cite {
  opacity: 1;
  transform: none;
}

.hv-cite-check {
  color: var(--green);
  font-weight: 600;
}

.hv-cite-url {
  color: var(--text);
  opacity: 0.85;
}

.hv-cite-tag {
  color: var(--green);
  border: 1px solid rgba(10, 228, 72, 0.4);
  border-radius: 4px;
  padding: 2px 7px;
  font-size: 10px;
  letter-spacing: 0.05em;
}

/* --- 실험 상태 위젯 (검색 패널 하단) --- */

.hv-status {
  margin-top: 14px;
  padding: 14px 16px;
  background: rgba(25, 25, 25, 0.6);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  font-family: var(--font-mono);
}

.hv-status-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.hv-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  animation: hv-pulse 1.6s ease-in-out infinite;
}

.hv-status-title {
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
}

.hv-status-day {
  margin-left: auto;
  font-size: 11px;
  color: var(--text);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
  padding: 2px 8px;
}

.hv-status-steps {
  display: grid;
  gap: 7px;
  margin-bottom: 12px;
}

.hv-status-steps li {
  position: relative;
  padding-left: 20px;
  font-size: 11.5px;
  color: var(--muted);
  line-height: 1.5;
}

.hv-status-steps li em {
  font-style: normal;
  margin-left: 8px;
  opacity: 0.65;
  font-size: 10.5px;
}

.hv-status-steps li::before {
  content: "◇" / "";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 11px;
  color: var(--muted);
}

.hv-status-steps li.is-done {
  color: var(--text);
}

.hv-status-steps li.is-done::before {
  content: "✓" / "";
  color: var(--green);
}

.hv-status-steps li.is-now {
  color: var(--text);
}

.hv-status-steps li.is-now::before {
  content: "●" / "";
  color: var(--green);
  animation: hv-pulse 1.6s ease-in-out infinite;
}

.hv-status-note {
  font-size: 11px;
  line-height: 1.65;
  color: var(--muted);
  word-break: keep-all;
}

/* ---------- Chips ---------- */

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-block;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  white-space: nowrap;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.chip:hover {
  border-color: var(--muted);
  transform: translateY(-1px);
}

/* ---------- Buttons ---------- */

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--text);
  border-radius: 100px;
  transition: color 0.2s ease, border-color 0.2s ease,
    background-color 0.25s ease, transform 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.btn:hover,
.btn:focus-visible {
  color: var(--green);
  border-color: var(--green);
  background: rgba(10, 228, 72, 0.06);
  transform: translateY(-2px);
}

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

.text-link {
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--green);
}

/* ---------- Sections ---------- */

.section {
  position: relative;
  border-top: 1px solid var(--border);
  padding: clamp(64px, 9vw, 112px) 0;
}

/* 섹션 구분선 위 크로스헤어 마커 */
.section::before {
  content: "+" / "";
  position: absolute;
  top: -0.72em;
  left: var(--gutter);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--muted);
  background: var(--bg);
  padding: 0 8px;
}

.project-summary {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 40px;
}

/* ---------- Cards (Fit) ---------- */

.card-grid {
  display: grid;
  gap: 20px;
  margin-top: 48px;
}

.card-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1), border-color 0.3s ease;
}

/* HUD 코너 브래킷 */
.card::before,
.card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
  transition: border-color 0.3s ease;
}

.card::before {
  top: -1px;
  left: -1px;
  border-top: 1px solid rgba(255, 252, 225, 0.35);
  border-left: 1px solid rgba(255, 252, 225, 0.35);
  border-top-left-radius: 8px;
}

.card::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 1px solid rgba(255, 252, 225, 0.35);
  border-right: 1px solid rgba(255, 252, 225, 0.35);
  border-bottom-right-radius: 8px;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 252, 225, 0.22);
}

.card:hover::before,
.card:hover::after {
  border-color: rgba(255, 252, 225, 0.6);
}

.card-period {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--muted);
  margin-bottom: 18px;
}

.card-category {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.card-title {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.015em;
  margin-bottom: 14px;
}

.card-body {
  font-size: 15.5px;
  color: var(--text);
  opacity: 0.88;
  margin-bottom: 22px;
}

.card-tags {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.01em;
  color: var(--muted);
}

/* ---------- Project meta ---------- */

.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.meta-item {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 20px 24px;
}

.meta-item--wide {
  grid-column: span 1;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 8px;
}

.meta-value {
  font-size: 15.5px;
  line-height: 1.5;
}

/* ---------- Project blocks ---------- */

.project-block {
  margin-bottom: 44px;
}

.block-label {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}

.task-list {
  display: grid;
  gap: 14px;
  max-width: 860px;
}

.task-list li {
  position: relative;
  padding-left: 26px;
  font-size: 16px;
  opacity: 0.92;
}

.task-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--muted);
}

.task-list strong {
  font-weight: 600;
  color: var(--text);
}

/* Checklist (Project 04) */

.check-list {
  display: grid;
  gap: 14px;
  max-width: 860px;
}

.check-list li {
  position: relative;
  padding-left: 32px;
  font-size: 16px;
  opacity: 0.92;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--green);
}

/* Number cards (Project 03) */

.number-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.number-card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1), border-color 0.3s ease;
}

.number-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 252, 225, 0.22);
}

.number-value {
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.number-label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
}

/* Insight box */

.insight-box {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-left: 3px solid var(--text);
  border-radius: 8px;
  padding: 26px 30px;
  max-width: 860px;
}

.insight-box .block-label {
  margin-bottom: 12px;
}

.insight-box p {
  font-size: 16.5px;
  line-height: 1.65;
  opacity: 0.92;
}

.insight-box p + p {
  margin-top: 16px;
}

/* ---------- Skills ---------- */

.skills-groups {
  display: grid;
  gap: 0;
  margin-top: 40px;
}

.skills-group {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  align-items: start;
  padding: 28px 0;
  border-top: 1px solid var(--border-soft);
}

.skills-group:first-child {
  border-top: none;
  padding-top: 0;
}

.skills-category {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

/* ---------- FAQ ---------- */

.faq-list {
  max-width: 860px;
  border-top: 1px solid var(--border);
}

.faq-item {
  border-bottom: 1px solid var(--border);
  interpolate-size: allow-keywords;
}

/* 지원 브라우저에서만 부드럽게 열리고, 미지원 브라우저는 즉시 열림 */
.faq-item::details-content {
  opacity: 0;
  block-size: 0;
  overflow-y: clip;
  transition: content-visibility 0.35s allow-discrete, opacity 0.35s ease,
    block-size 0.35s ease;
}

.faq-item[open]::details-content {
  opacity: 1;
  block-size: auto;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 4px;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-q {
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.faq-item summary::after {
  content: "+";
  content: "+" / "";
  flex-shrink: 0;
  font-size: 24px;
  font-weight: 400;
  color: var(--muted);
  line-height: 1;
  transition: transform 0.25s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item summary:hover .faq-q {
  color: var(--green);
}

.faq-answer {
  padding: 0 4px 26px;
  max-width: 760px;
  font-size: 16px;
  color: var(--text);
  opacity: 0.86;
}

/* ---------- Contact ---------- */

#contact .btn-row {
  margin-top: 16px;
  margin-bottom: 28px;
}

.contact-note {
  font-size: 15px;
  color: var(--muted);
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 48px 0 56px;
  font-size: 14px;
  color: var(--muted);
}

.site-footer p + p {
  margin-top: 8px;
}

.footer-sub {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.01em;
}

/* ---------- Scroll reveal (JS-gated: 콘텐츠는 JS 없이도 항상 보임) ---------- */

html.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
  transition-delay: var(--reveal-delay, 0s);
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 모노 라벨 타이핑 효과 (터미널 무드) ---------- */
/* 텍스트는 항상 DOM에 존재 — width/overflow만 조작하므로 크롤러가 읽음 */

html.js .type-init {
  display: inline-block;
  max-width: 100%;
  width: 0;
  overflow: hidden;
  white-space: nowrap;
  vertical-align: bottom;
  border-right: 1px solid currentColor;
}

html.js .type-init.typing {
  animation: tw-type var(--tw-dur, 500ms) steps(var(--tw-steps, 12)) forwards,
    tw-caret 0.7s step-end 5;
}

html.js .type-init.typed {
  width: auto;
  border-right-color: transparent;
}

@keyframes tw-type {
  from { width: 0; }
  to { width: var(--tw-w, auto); }
}

@keyframes tw-caret {
  0%, 100% { border-right-color: currentColor; }
  50% { border-right-color: transparent; }
}

/* ---------- Responsive ---------- */

.br-desktop {
  display: inline;
}

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

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

  .meta-item--wide {
    grid-column: span 2;
  }

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

  .skills-group {
    grid-template-columns: 200px 1fr;
  }
}

@media (max-width: 768px) {
  .br-desktop {
    display: none;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding-top: 12px;
    padding-bottom: 4px;
    min-height: auto;
  }

  :root {
    --header-h: 96px;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav a {
    padding: 10px 10px;
    font-size: 14px;
  }

  .site-nav li:first-child a {
    padding-left: 0;
  }

  .site-nav li:first-child a::after {
    left: 0;
  }

  .hero-headline {
    font-size: clamp(42px, 11vw, 56px);
    line-height: 1.1;
    letter-spacing: -0.02em;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .stat-value {
    font-size: clamp(40px, 11vw, 56px);
  }

  .stat-label {
    max-width: none;
  }

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

  .meta-grid {
    grid-template-columns: 1fr;
  }

  .meta-item--wide {
    grid-column: auto;
  }

  .skills-group {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 24px 0;
  }

  .btn {
    padding: 13px 24px;
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  .number-grid {
    grid-template-columns: 1fr;
  }

  .insight-box {
    padding: 22px 20px;
  }

  .card {
    padding: 24px 20px;
  }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html.js .reveal {
    opacity: 1;
    transform: none;
  }

  html.js .type-init {
    width: auto;
    overflow: visible;
    white-space: normal;
    border-right: none;
    animation: none;
  }
}