/*
 * Build It 랜딩 스타일.
 *
 * 아카이브 시안(docs/archive/archived_html/홈피개선.html)의 인라인 <style>을 옮겨온 뒤,
 * 공용 자산(account_menu.css / public_footer.css)과 충돌하지 않도록 리셋 범위를 .bi-page로 좁혔다.
 * 시안의 `*{margin:0;padding:0}` 전역 리셋을 그대로 두면 헤더 계정 메뉴와 공용 footer가 깨진다.
 */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-deep: #f1f3f6;
  --ink: #0a0a0c;
  --ink-soft: #67707c;
  --ink-faint: #a4abb5;
  --line: #e8eaee;
  --accent: #2563eb;
  --accent-soft: #eaf0fe;
  --ultramarine: #2b3a9e;
  --gold: #c9a13b;
  --gold-soft: #f6ecd4;
  --radius: 24px;
  --radius-sm: 16px;
  --shadow-sm: 0 12px 32px rgba(10, 12, 20, .05);
  --shadow-lg: 0 30px 80px rgba(10, 12, 20, .09);
  --ease: cubic-bezier(.16, .84, .44, 1);
  /* fixed nav 높이(padding 22*2 + .auth-action 38). pin 섹션이 이만큼을 비워두지 않으면
     제목이 nav 밑으로 들어가 잘린다. */
  --nav-h: 82px;
  --font: -apple-system, BlinkMacSystemFont, "Pretendard Variable", Pretendard,
    "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", Helvetica, Arial, sans-serif;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  letter-spacing: -0.02em;
}

/* 리셋은 랜딩 컨텐츠 안쪽으로만. 계정 메뉴/모달/공용 footer는 각자 CSS를 유지한다. */
.bi-page,
.bi-page *,
.bi-page *::before,
.bi-page *::after {
  box-sizing: border-box;
}

.bi-page h1,
.bi-page h2,
.bi-page h3,
.bi-page p,
.bi-page ul,
.bi-page li,
.bi-page figure {
  margin: 0;
  padding: 0;
}

.bi-page ul {
  list-style: none;
}

.bi-page img,
.bi-page video {
  display: block;
  max-width: 100%;
}

.bi-page a {
  color: inherit;
  text-decoration: none;
}

.bi-page section {
  position: relative;
}

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

/* ---------- Build It wordmark ---------- */
.bi {
  font-weight: 800;
  letter-spacing: -.04em;
  white-space: nowrap;
  display: inline-flex;
  align-items: baseline;
}

.bi b {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -.045em;
}

.bi i {
  font-style: normal;
  font-weight: 800;
  letter-spacing: -.006em;
  margin-left: .09em;
  background: linear-gradient(115deg, var(--ultramarine) 10%, var(--accent) 50%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 26px rgba(43, 58, 158, .2);
  display: inline-block;
  transform: scale(1.02);
  transform-origin: left bottom;
}

.bi .ext {
  font-weight: 600;
  letter-spacing: -.015em;
  color: var(--ink-soft);
  margin-left: .32em;
}

.hero-slogan {
  margin-top: 16px;
  font-size: clamp(14px, 1.8vw, 18px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink-soft);
}

.brand-stroke {
  display: block;
  width: 64px;
  height: 8px;
  margin: 8px auto 0;
  opacity: .7;
}

.phonetic {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--ink-faint);
}

.bi-h2 {
  font-size: clamp(26px, 3.8vw, 44px);
  line-height: 1.15;
}

.bi-h2 .ext {
  margin-left: .26em;
}

.bi-page .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 32px;
  border: none;
  border-radius: 100px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  transition: transform .45s var(--ease), background .3s;
  will-change: transform;
}

.bi-page .btn:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

.bi-page .btn.outline {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}

.bi-page .btn.outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
  transform: translateY(-2px);
}

.bi-page .btn svg {
  transition: transform .3s var(--ease);
}

.bi-page .btn:hover svg {
  transform: translateX(3px);
}

.brand-glow {
  position: absolute;
  inset: -30% -10%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(closest-side, rgba(43, 58, 158, .14), transparent 70%) 22% 28%/55% 55% no-repeat,
    radial-gradient(closest-side, rgba(201, 161, 59, .15), transparent 70%) 80% 72%/48% 48% no-repeat;
  filter: blur(50px);
}

.brand-glow.soft {
  background:
    radial-gradient(closest-side, rgba(43, 58, 158, .08), transparent 70%) 20% 25%/50% 50% no-repeat,
    radial-gradient(closest-side, rgba(201, 161, 59, .09), transparent 70%) 82% 75%/45% 45% no-repeat;
}

/* ---------- nav ---------- */
.bi-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 5vw;
  transition: padding .4s var(--ease), background .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid transparent;
}

.bi-nav.scrolled {
  padding: 14px 5vw;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--line);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nav-logo {
  font-size: 19px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 옆에 붙는 로그인·회원가입(.auth-action)과 같은 규격이어야 한 줄로 읽힌다.
   값이 어긋나면 문의하기만 커 보인다 — account_menu.css의 .auth-action과 함께 유지할 것. */
.bi-page .btn.nav-cta {
  min-height: 38px;
  padding: 9px 14px;
  gap: 6px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 900;
}

/* ---------- hero ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 5vw 80px;
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

.hero-lines {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .55;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 75%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 75%, transparent);
}

.hero-lines svg {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 220vw;
  max-width: none;
  height: auto;
  transform: translate(-50%, -50%);
}

.hero-lines .l2 {
  animation: driftA 34s linear infinite;
}

.hero-lines .l3 {
  animation: driftB 46s linear infinite;
}

@keyframes driftA {
  from { transform: translate(-50%, -50%) translateX(0); }
  to { transform: translate(-50%, -50%) translateX(-33.33%); }
}

@keyframes driftB {
  from { transform: translate(-50%, -50%) translateX(0); }
  to { transform: translate(-50%, -50%) translateX(33.33%); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero h1 {
  font-size: clamp(30px, 5.6vw, 64px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.03em;
  color: var(--ink);
}

.hero-title-subject {
  display: inline-block;
  font-size: .65em;
  line-height: 1.25;
}

.hero h1 .bi {
  display: inline-block;
  margin-top: 8px;
  font-size: 1.10em;
  line-height: 1;
}

.hero-actions {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-actions .btn {
  padding: 11px 18px;
  font-size: 13px;
}

.hero-video-card {
  width: min(520px, 82vw);
  aspect-ratio: 16 / 9;
  margin: 22px auto 0;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, .3);
  border-radius: 20px;
  background: #eef2f7;
  box-shadow: 0 18px 45px rgba(37, 58, 158, .12), 0 3px 12px rgba(15, 23, 42, .08);
}

.hero-video-trigger {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  background: #eef2f7;
  color: #fff;
  cursor: pointer;
}

.hero-video-trigger img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform .45s ease;
}

.hero-video-trigger:hover img { transform: scale(1.018); }

.hero-video-trigger:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: -3px;
}

.hero-video-card iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 2;
}

.scroll-indicator .track {
  width: 1px;
  height: 44px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}

.scroll-indicator .dot {
  position: absolute;
  left: -1.5px;
  top: -8px;
  width: 4px;
  height: 12px;
  border-radius: 2px;
  background: var(--accent);
  animation: scrollDot 1.8s ease-in-out infinite;
}

@keyframes scrollDot {
  0% { top: -12px; opacity: 0; }
  30% { opacity: 1; }
  100% { top: 44px; opacity: 0; }
}

.scroll-indicator span {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-faint);
  font-weight: 700;
  text-transform: uppercase;
}

/* ---------- Build It Chart showcase ---------- */
.chart-showcase {
  min-height: 100svh;
  padding: 104px 20px 74px;
  text-align: center;
  background: radial-gradient(circle at 50% 28%, #fff 0, #f8f9fb 48%, #f2f4f8 100%);
  position: relative;
  overflow: hidden;
}

.chart-date {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .13em;
  color: #a1a9b4;
  margin-bottom: 18px;
}

.chart-title {
  margin: 0;
  font-size: clamp(43px, 6vw, 64px);
  line-height: 1;
  letter-spacing: -.065em;
  font-weight: 900;
  color: #111;
}

.chart-it {
  background: linear-gradient(180deg, #5577d8 0%, #5577d8 68%, #b8a36d 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.chart-muted { color: #6c7582; }

.chart-sub {
  margin: 17px 0 30px;
  color: #68727f;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.03em;
}

.chart-phone {
  width: min(310px, 82vw);
  height: 610px;
  margin: 0 auto;
  border: 12px solid #08090b;
  border-radius: 52px;
  background: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 55px rgba(31, 43, 63, .13);
}

.chart-island {
  position: absolute;
  z-index: 5;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 116px;
  height: 27px;
  background: #08090b;
  border-radius: 0 0 18px 18px;
}

.chart-screen {
  height: 100%;
  overflow: hidden;
  background: #fff;
  text-align: left;
  padding: 44px 13px 18px;
}

.chart-hero-card {
  text-align: center;
  border-bottom: 1px solid #e8ebef;
  padding: 0 4px 20px;
}

.chart-tiny {
  font-size: 7px;
  letter-spacing: .13em;
  color: #a1a9b4;
  font-weight: 800;
}

.chart-phone-brand {
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -.06em;
  margin: 7px 0;
}

.chart-phone-brand span:last-child {
  background: linear-gradient(90deg, #4f5fc4, #6680d2, #b39a63);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.chart-top {
  font-size: 12px;
  font-weight: 800;
  color: #69727e;
}

.chart-top mark {
  background: #fff0c9;
  border-radius: 4px;
  padding: 1px 4px;
  color: #111;
}

.chart-list-title {
  font-size: 9px;
  font-weight: 900;
  margin: 18px 3px 10px;
}

.chart-row {
  border: 1px solid #f0dfb5;
  border-radius: 11px;
  padding: 10px 8px;
  margin-bottom: 8px;
  display: grid;
  grid-template-columns: 20px 30px 1fr auto;
  align-items: center;
  gap: 7px;
}

.chart-rank {
  font-size: 13px;
  font-weight: 900;
  color: #c9a035;
}

.chart-avatar {
  width: 29px;
  height: 29px;
  border-radius: 50%;
  background: #f2f4f7;
  border: 1px solid #e3e7ed;
  position: relative;
}

.chart-avatar::before {
  content: "";
  position: absolute;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #a7afbb;
  left: 9px;
  top: 5px;
}

.chart-avatar::after {
  content: "";
  position: absolute;
  width: 17px;
  height: 9px;
  border-radius: 12px 12px 5px 5px;
  background: #a7afbb;
  left: 5px;
  bottom: 4px;
}

.chart-name {
  font-size: 9px;
  font-weight: 900;
}

.chart-name span {
  font-size: 6px;
  color: #69727e;
  margin-left: 3px;
}

.chart-meta {
  font-size: 6.5px;
  color: #707987;
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 135px;
}

.chart-new {
  font-size: 6px;
  font-weight: 900;
  color: #c69b2c;
  background: #fbf1d5;
  padding: 4px 5px;
  border-radius: 999px;
}

.chart-fade {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 95px;
  background: linear-gradient(transparent, #fff 72%);
}

.chart-cta {
  position: absolute;
  z-index: 4;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  text-decoration: none;
  background: #17191d;
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  padding: 11px 17px;
  border-radius: 999px;
}

@media (max-width: 500px) {
  .chart-showcase { padding-top: 82px; }
  .chart-phone { height: 580px; }
  .chart-sub { font-size: 15px; }
}

/* ---------- FLOW (히어로 물결을 타고 흐르는 브랜드 키워드) ---------- */
.flow-marquee {
  position: relative;
  overflow: hidden;
  background: var(--bg);
  padding: 30px 0 84px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.flow-marquee .hero-lines {
  opacity: .5;
}

.fm-row {
  position: relative;
  z-index: 1;
  display: flex;
  width: max-content;
  animation: fmScroll 44s linear infinite;
}

.fm-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink-faint);
  padding: 0 15px;
  white-space: nowrap;
  animation: fmBob 4.2s ease-in-out infinite;
}

.fm-row span.hi {
  color: var(--accent);
}

.fm-row span::after {
  content: "·";
  margin-left: 15px;
  color: var(--line);
}

@keyframes fmScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes fmBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* ---------- builder section ("Build It Web") ---------- */
.builder {
  min-height: 100svh;
  background: var(--bg-soft);
  overflow: hidden;
}

.builder-pin {
  min-height: 100svh;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  /* 상단은 nav 높이만큼 비워야 제목이 안 잘린다. */
  padding: calc(var(--nav-h) + 16px) 5vw 32px;
}

.builder-text {
  text-align: center;
  max-width: 460px;
}

.builder-text p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
  font-weight: 600;
}

.builder-video-wrap {
  width: min(1080px, 92vw);
  display: flex;
  justify-content: center;
  min-height: 0;
}

.web-video-card {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 28px;
  overflow: hidden;
  background: #0a0a0c;
  border: 1px solid rgba(15, 23, 42, .08);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.web-video-bar {
  height: 34px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 16px;
  background: #101114;
}

.web-video-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .24);
}

.web-video {
  display: block;
  width: 100%;
  height: calc(100% - 34px);
  object-fit: cover;
  object-position: top center;
}

.phone {
  width: min(280px, 62vw);
  aspect-ratio: 280/572;
  background: #0a0a0c;
  border-radius: 44px;
  padding: 10px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.phone-lg {
  width: min(340px, 78vw);
}

.phone::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 38%;
  height: 22px;
  background: #0a0a0c;
  border-radius: 0 0 16px 16px;
  z-index: 3;
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 34px;
  overflow: hidden;
  position: relative;
  background: #000;
}

.phone-screen video,
.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  position: relative;
}

/* ---------- product-solo ("Build It Shorts" / "Build It Report") ---------- */
.product-solo {
  padding: 120px 5vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 34px;
  position: relative;
  overflow: hidden;
}

.product-solo > * {
  position: relative;
  z-index: 1;
}

.product-solo p {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink-soft);
  font-weight: 600;
}

/* 실제 영상이 아직 없는 자리. 준비 중임을 숨기지 않는 중립 프레임. */
.video-ready {
  width: 100%;
  height: 100%;
  position: relative;
  background: linear-gradient(165deg, #14151a, #0a0a0c 70%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-ready .vr-play {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .16);
  display: flex;
  align-items: center;
  justify-content: center;
}


/* ---------- wiki ("Build It Wiki") ---------- */
.wiki {
  min-height: 220vh;
  background: var(--bg-soft);
  color: var(--ink);
  overflow: visible;
}

.wiki-pin {
  min-height: 100svh;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  /* 상단 nav만 피하고, 하단은 다음 섹션이 침범하지 않도록 .wiki 자체 높이로 확보한다. */
  padding: calc(var(--nav-h) + 16px) 5vw 28px;
  overflow: visible;
  gap: 28px;
}

.wiki-top {
  text-align: center;
  max-width: 640px;
}

.wiki-top p {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink-soft);
  font-weight: 600;
}

.flow-h {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.flow-h-step {
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: -.005em;
  color: var(--ink-faint);
  padding: 7px 14px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: #fff;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}

.flow-h-arrow {
  color: var(--line);
  font-size: 13px;
  font-weight: 700;
}

.flow-h-step.passed {
  color: var(--ink);
  border-color: var(--ink);
}

.flow-h-step.current {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.1);
}

.wiki-laptop-wrap {
  display: flex;
  justify-content: center;
  width: 100%;
  min-height: 0;
}

.laptop {
  width: min(760px, 94vw);
}

.laptop-xl {
  width: min(980px, 96vw);
}

/* nav + 제목/단계칩 + 프레임 chrome만 제외한다. 크기는 기존처럼 크게 유지하고,
   다음 CTA 침범 방지는 .wiki의 min-height로 처리한다. */
.wiki-pin .laptop-xl {
  width: min(980px, 96vw, calc((100svh - 330px) * 16 / 9.4));
}

.laptop-top {
  background: #1c1d20;
  border-radius: 20px 20px 0 0;
  padding: 16px 16px 0;
}

.laptop-cam {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #3a3b3f;
  margin: 0 auto 12px;
}

.laptop-screen {
  position: relative;
  aspect-ratio: 16/9.4;
  border-radius: 8px 8px 0 0;
  overflow: hidden;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--line);
}

.laptop-screen .scr {
  position: absolute;
  inset: 0;
  opacity: 0;
  overflow: hidden;
  color: var(--ink);
  transform: translateY(24px);
  background: #fff;
}

.scr-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.scr-caption {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(10, 10, 12, .58);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: 100px;
  letter-spacing: .01em;
}

/* 영상 슬롯이 비공개일 때 쓰는 대체 프레임. 빈 화면 대신 준비 중임을 알린다. */
.scr-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(165deg, #14151a, #0a0a0c 70%);
  color: rgba(255, 255, 255, .62);
  font-size: 13px;
  font-weight: 700;
}

.scr-placeholder span {
  font-size: 22px;
  line-height: 1;
}

/* 학교가 쌓이는 "학교별 Wiki" 대시보드. 통계가 아니라 축적을 보여준다. */
.mock-dash {
  height: 100%;
  padding: clamp(20px, 3.4vw, 38px);
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: #fff;
}

.mock-dash-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mock-dash-title {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
}

.mock-dash-head .live {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10.5px;
  font-weight: 800;
  color: var(--ink-soft);
}

.mock-dash-head .live .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
  animation: livePulse 1.6s ease-in-out infinite;
}

@keyframes livePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .3; }
}

.mws-grid {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 9px;
  flex: 1;
  overflow: hidden;
}

.mws-grid span {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--ink-soft);
  padding: 9px 15px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
}

.mws-grid span.mws-new {
  color: var(--accent);
  border-color: var(--accent-soft);
  background: var(--accent-soft);
  opacity: 0;
  transform: scale(.85);
}

.laptop-base {
  height: 16px;
  background: linear-gradient(#28292c, #0f1012);
  border-radius: 0 0 10px 10px;
  position: relative;
}

.laptop-base::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 16%;
  height: 5px;
  background: #3a3b3f;
  border-radius: 0 0 6px 6px;
}

/* ---------- mini CTA ---------- */
.cta-mini {
  padding: 110px 5vw 90px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 22px;
  position: relative;
  overflow: hidden;
}

.cta-mini > * {
  position: relative;
  z-index: 1;
}

.cta-mini p {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink-soft);
}

/* ---------- reveal utility ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
}

/* ---------- mobile ---------- */
@media (max-width: 860px) {
  .builder-pin { padding-top: 110px; gap: 20px; }
  .wiki-pin {
    padding-top: 100px;
    padding-bottom: 40px;
    overflow-y: auto;
    height: auto;
    min-height: 100svh;
    justify-content: flex-start;
  }
  /* 모바일 wiki는 pin이 풀리고 세로로 스크롤되므로 높이로 줄일 이유가 없다. */
  .wiki-pin .laptop-xl { width: min(980px, 96vw); }
  .product-solo { padding: 90px 5vw; }
  .cta-mini { padding: 90px 5vw 70px; }
}

@media (max-width: 520px) {
  .hero {
    min-height: 100svh;
    padding: 112px 4vw 56px;
    overflow: hidden;
  }
  .hero-inner { width: 100%; }
  .hero h1 { font-size: clamp(30px, 9vw, 40px); }
  .hero-video-card {
    width: 100%;
    margin-top: 18px;
    border-radius: 14px;
  }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: auto; align-self: center; }
  .bi-nav { padding: 16px 5vw; }
  .bi-page .btn.nav-cta { min-height: 34px; padding: 7px 12px; font-size: 12.5px; }
}

/* 모바일은 전체 데스크톱을 축소하지 않고 핵심 UI를 세로형 뷰포트로 확대·크롭한다. */
@media (max-width: 520px) {
  .builder-pin {
    min-height: auto;
    padding: 96px 6px 56px;
    gap: 22px;
  }

  .builder-video-wrap {
    width: calc(100vw - 12px);
    max-width: none;
  }

  .web-video-card {
    aspect-ratio: 4 / 5;
    border-radius: 18px;
  }

  .web-video {
    object-fit: cover;
    object-position: 38% top;
    transform: scale(1.08);
    transform-origin: 38% top;
  }

  .wiki {
    min-height: auto;
  }

  .wiki-pin {
    padding: 96px 6px 56px;
    gap: 24px;
    overflow: hidden;
  }

  .wiki-laptop-wrap {
    width: calc(100vw - 12px);
    max-width: none;
  }

  .wiki-pin .laptop-xl {
    width: 100%;
    max-width: none;
  }

  .laptop-top {
    padding: 10px 10px 0;
  }

  .laptop-cam {
    margin-bottom: 8px;
  }

  .laptop-screen {
    aspect-ratio: 4 / 5;
  }

  .scr-video {
    object-fit: cover;
    object-position: 32% top;
    transform: scale(1.18);
    transform-origin: 32% top;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-lines .l2,
  .hero-lines .l3,
  .scroll-indicator .dot,
  .fm-row,
  .fm-row span,
  .mock-dash-head .live .dot {
    animation: none !important;
  }
}

/* PR-C — Chart 영역: 지역 선택 중심, 단일 중앙 컬럼 (좌측 잔여 레이아웃 정리) */
.chart-showcase{display:flex;flex-direction:column;align-items:center}
.chart-showcase .visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.chart-showcase .chart-headline{
  margin:14px 0 6px;max-width:560px;
  font-size:clamp(22px,3.4vw,30px);font-weight:900;line-height:1.25;letter-spacing:-.045em;color:#111;
}
.chart-showcase .chart-sub{margin:8px 0 26px;max-width:480px;font-size:15px;font-weight:600;line-height:1.65;color:#68727f}
.chart-showcase .chart-sub strong{font-weight:800;color:#3a4250}
.chart-showcase .chart-picker-note{margin:0 0 8px;font-size:12px;font-weight:700;letter-spacing:-.02em;color:#8a929d}
.chart-region-picker{
  margin:0 0 30px;display:flex;gap:9px;flex-wrap:wrap;justify-content:center;max-width:520px;width:100%;
}
.chart-region-picker select{
  flex:1 1 150px;min-width:0;padding:12px 15px;border-radius:100px;border:1.5px solid #e2e5ea;background:#fff;
  font-family:inherit;font-size:14px;font-weight:700;color:#111;cursor:pointer;letter-spacing:-.02em;
}
.chart-region-picker select:disabled{color:#a1a9b4;background:#f4f5f8;cursor:not-allowed}
.chart-criteria-link{
  flex:1 1 100%;order:1;text-align:center;margin:2px 0 2px;
  font-size:12px;font-weight:700;letter-spacing:-.02em;color:#9aa1ac;text-decoration:none;
}
.chart-criteria-link:hover{color:#2563eb}
.chart-region-picker button{
  flex:1 1 100%;order:2;padding:13px 22px;border-radius:100px;background:#111;color:#fff;
  font-family:inherit;font-size:14px;font-weight:800;letter-spacing:-.02em;cursor:pointer;border:0;
  transition:background .25s ease,transform .25s ease;
}
.chart-region-picker button:hover{background:#2563eb;transform:translateY(-2px)}
.chart-list-title #landingChartDate{font-weight:700;color:#a1a9b4;letter-spacing:0}
@media(min-width:520px){.chart-region-picker button{flex:0 0 auto}}
@media(max-width:520px){.chart-region-picker select{flex-basis:100%}}

/* Chart 아래 — 미래 방향 (제목 없이 4단계 흐름 + 가운데 정렬 설명) */
.chart-vision{margin:52px 0 0;display:flex;flex-direction:column;align-items:center}
.chart-vision-flow{
  list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;
  gap:10px 8px;max-width:560px;
}
.chart-vision-flow li{
  display:flex;flex-direction:column;align-items:center;gap:2px;
  flex:1 1 120px;min-width:110px;padding:12px 8px;border:1px solid #e6e9ef;border-radius:14px;background:#fff;
}
.chart-vision-flow li b{font-size:12px;font-weight:900;letter-spacing:.04em;color:#2563eb}
.chart-vision-flow li span{font-size:12px;font-weight:600;color:#68727f;letter-spacing:-.02em}
.chart-showcase .chart-vision-foot{
  margin:20px 0 0;max-width:460px;text-align:center;
  font-size:13px;font-weight:700;line-height:1.65;letter-spacing:-.02em;color:#8a929d;
}
@media(min-width:640px){
  .chart-vision-flow li{position:relative;flex:0 1 128px}
  .chart-vision-flow li:not(:last-child)::after{
    content:"→";position:absolute;right:-10px;top:50%;transform:translateY(-50%);
    font-size:12px;font-weight:900;color:#c2c8d2;
  }
}