/* ==========================================================================
   3BTN 메인 화면 랜딩 스타일
   모든 선택자는 .btn3-landing 안에서만 동작하도록 스코프하고,
   커스텀 클래스는 전부 btn3- 접두사를 사용해 기존 그누보드 테마와 충돌을 피한다.
   참고 디자인: D:\Hobby\01.회의록\0\1.noterang\mockup\index2.html / style.css
   ========================================================================== */

.btn3-landing {
  --btn3-primary: #2f73f2;
  --btn3-primary-hover: #2560d9;
  --btn3-primary-light: #eaf2fe;
  --btn3-sky-1: #f0f9ff;
  --btn3-sky-2: #e0f2fe;
  --btn3-sky-3: #bae6fd;
  --btn3-accent: #6366f1;
  --btn3-grad: linear-gradient(135deg, #2f73f2 0%, #6366f1 100%);
  --btn3-grad-sky: linear-gradient(135deg, #38bdf8 0%, #2f73f2 100%);
  --btn3-success: #10b981;
  --btn3-success-light: #d1fae5;
  --btn3-bg: #f7faff;
  --btn3-surface: #ffffff;
  --btn3-border: #e5e9f0;
  --btn3-text-1: #0f172a;
  --btn3-text-2: #475569;
  --btn3-text-3: #94a3b8;
  --btn3-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
  --btn3-shadow-md: 0 4px 12px rgba(16, 24, 40, 0.08);
  --btn3-shadow-lg: 0 20px 50px rgba(47, 115, 242, 0.18);

  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
  color: var(--btn3-text-1);
  background: var(--btn3-surface);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.btn3-landing * { box-sizing: border-box; }
.btn3-landing button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
.btn3-landing a { color: inherit; text-decoration: none; }
.btn3-landing ul { list-style: none; margin: 0; padding: 0; }
.btn3-landing img { max-width: 100%; }

/* ----- 버튼 ----- */
.btn3-landing .btn3-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 10px; border: none;
  font-family: inherit; font-size: 14.5px; font-weight: 700;
  cursor: pointer; transition: all 0.15s; text-decoration: none;
  min-height: 44px;
}
.btn3-landing .btn3-btn-primary { background: var(--btn3-grad); color: #fff; box-shadow: 0 4px 14px rgba(47,115,242,0.35); }
.btn3-landing .btn3-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(47,115,242,0.45); }
.btn3-landing .btn3-btn-outline { color: var(--btn3-primary); background: #fff; border: 1.5px solid var(--btn3-primary); }
.btn3-landing .btn3-btn-outline:hover { background: var(--btn3-sky-2); }
.btn3-landing .btn3-btn-lg { padding: 15px 28px; font-size: 16px; border-radius: 12px; }

/* ----- 공통 섹션 헤더 ----- */
.btn3-section-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn3-section-head { text-align: center; margin-bottom: 52px; }
.btn3-head-eyebrow {
  display: inline-block; font-size: 12px; font-weight: 800;
  color: var(--btn3-primary); letter-spacing: 0.12em; margin-bottom: 14px;
  padding: 4px 12px; background: var(--btn3-sky-2); border-radius: 999px;
}
.btn3-section-head h2 { font-size: 34px; font-weight: 900; letter-spacing: -0.02em; line-height: 1.3; margin: 0 0 12px; }
.btn3-section-head p { font-size: 15.5px; color: var(--btn3-text-2); margin: 0; }

/* ----- 상단 내 버튼 조합 (미리보기 + 링크 포함 복사) ----- */
.btn3-home-copy { padding: 32px 24px 8px; background: var(--btn3-sky-1); }
.btn3-home-copy-grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 1.45fr) repeat(3, minmax(0, 1fr)); gap: 20px; align-items: stretch;
}
.btn3-home-copy-card {
  display: flex; flex-direction: column; min-width: 0;
  padding: 20px 20px 24px;
  background: var(--btn3-bg); border: 1px solid var(--btn3-border); border-radius: 6px;
}
.btn3-home-copy-card .btn3-home-copy-preview { margin-top: auto; }
.btn3-landing .btn3-home-copy-card .btn3-home-copy-btn { margin-bottom: auto; }
.btn3-home-panel .btn3-home-copy-title { margin-bottom: 16px; }
.btn3-home-copy-visual {
  display: block; flex: 1; overflow: hidden; border: 1px solid var(--btn3-border); border-radius: 6px; background: #fff;
  transition: box-shadow .15s ease, transform .15s ease;
}
.btn3-home-copy-visual:hover { box-shadow: var(--btn3-shadow-md); transform: translateY(-2px); }
.btn3-post {
  display: flex; flex-direction: column; height: 100%; min-height: 320px; padding: 20px 14px 14px;
  color: var(--btn3-text-1); text-align: left;
}
.btn3-landing .btn3-post-tags {
  margin: 0; font-size: 12.5px; font-weight: 800; line-height: 1.75; letter-spacing: -0.01em;
  color: #3b73b9; text-align: center; word-break: keep-all;
}
.btn3-post-buttons { display: flex; justify-content: center; align-items: center; gap: 2px; margin: auto 0; padding: 24px 0; }
.btn3-post-buttons span { margin: 0 !important; }
.btn3-landing .btn3-post-buttons img { display: block; width: 33% !important; max-width: 84px !important; height: auto !important; }
.btn3-landing .btn3-post-buttons span img { width: 76px !important; }
.btn3-post-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px; }
.btn3-post-chips span { padding: 3px 8px; border-radius: 4px; background: #f2f2f2; color: #444; font-size: 11.5px; line-height: 1.5; }
.btn3-post-actions { display: flex; align-items: center; gap: 14px; font-size: 12.5px; color: #333; }
.btn3-post-actions svg { display: block; }
.btn3-post-ico { width: 21px; height: 21px; fill: none; stroke: #222; stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
.btn3-post-actions circle { fill: #222; stroke: none; }
.btn3-post-like, .btn3-post-comment { display: inline-flex; align-items: center; gap: 4px; }
.btn3-post-like { margin-left: -8px; }
.btn3-post-like svg { width: 13px; height: 13px; fill: #ff4d7d; }
.btn3-home-styles {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-content: center; align-items: center; gap: 10px 8px;
  flex: 1; padding: 12px 4px; border-radius: 6px;
  transition: box-shadow .15s ease, transform .15s ease;
}
.btn3-home-styles:hover { box-shadow: var(--btn3-shadow-md); transform: translateY(-2px); }
.btn3-landing .btn3-home-styles img { display: block; width: 100%; max-width: 96px; height: auto; margin: 0 auto; }

/* ----- 공지사항 카드 ----- */
.btn3-home-notice-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.btn3-landing .btn3-notice-more {
  display: inline-flex; align-items: center; gap: 2px; flex-shrink: 0;
  font-size: 12.5px; font-weight: 600; color: var(--btn3-text-2);
}
.btn3-landing .btn3-notice-more:hover { color: var(--btn3-primary); }
.btn3-notice-more svg { width: 13px; height: 13px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.btn3-landing .btn3-notice-list { display: flex; flex-direction: column; flex: 1; align-content: flex-start; }
.btn3-notice-item + .btn3-notice-item { border-top: 1px dashed var(--btn3-border); }
.btn3-landing .btn3-notice-link { display: flex; align-items: center; gap: 10px; padding: 11px 2px; }
.btn3-landing .btn3-notice-link:hover .btn3-notice-subject { color: var(--btn3-primary); text-decoration: underline; }
.btn3-notice-subject {
  flex: 1; min-width: 0; font-size: 14px; line-height: 1.5; letter-spacing: -0.01em;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.btn3-notice-meta { display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0; font-size: 12px; color: var(--btn3-text-3); }
.btn3-notice-new {
  font-style: normal; font-weight: 800; font-size: 10.5px; line-height: 1.6;
  padding: 0 4px; border-radius: 4px; background: var(--btn3-primary); color: #fff;
}
.btn3-notice-empty { padding: 20px 2px; font-size: 13.5px; color: var(--btn3-text-3); text-align: center; }
.btn3-home-copy-title {
  margin: 0 0 24px; padding-bottom: 14px; border-bottom: 1px solid var(--btn3-border);
  font-size: 16px; font-weight: 700; letter-spacing: -0.01em; color: var(--btn3-text-1);
}
.btn3-home-copy-preview {
  display: grid; grid-template-columns: repeat(3, max-content); justify-content: center; align-items: center;
  padding: 8px 4px; line-height: 2; outline: none;
}
.btn3-home-copy-preview a { text-decoration: none; margin: 0 4px; }
.btn3-landing .btn3-home-copy-preview img { width: 100px !important; height: auto !important; max-width: none !important; }
.btn3-landing .btn3-home-copy-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: fit-content; min-width: 260px; max-width: 100%; min-height: 52px; margin: 24px auto 0; padding: 0 30px;
  background: #1558c0; color: #fff; border: none; border-radius: 999px;
  font-size: 15px; font-weight: 700; letter-spacing: -0.01em; cursor: pointer;
  box-shadow: 0 8px 20px rgba(21, 88, 192, 0.30);
  transition: background-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.btn3-landing .btn3-home-copy-btn:hover { background: #114a9f; color: #fff; box-shadow: 0 10px 24px rgba(21, 88, 192, 0.36); }
.btn3-landing .btn3-home-copy-btn:active { transform: translateY(1px); }
.btn3-landing .btn3-home-copy-btn.btn3-copied { background: #16a34a; box-shadow: 0 8px 20px rgba(22, 163, 74, 0.30); }
.btn3-home-copy-btn .btn3-ico { width: 18px; height: 18px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.btn3-home-copy-btn .btn3-ico-check { color: #86efac; }
.btn3-home-copy-manual { margin-top: 12px; font-size: 12px; color: var(--btn3-text-2); text-align: center; }

/* ----- Hero ----- */
.btn3-hero {
  position: relative; overflow: hidden; padding: 72px 24px 64px;
  background: linear-gradient(180deg, var(--btn3-sky-1) 0%, #ffffff 100%);
  text-align: center;
}
.btn3-hero-bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.btn3-blob { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.5; }
.btn3-blob-a { width: 380px; height: 380px; top: -110px; right: -70px; background: var(--btn3-sky-3); }
.btn3-blob-b { width: 340px; height: 340px; bottom: -140px; left: -90px; background: #c7d2fe; }
.btn3-hero-inner { position: relative; max-width: 880px; margin: 0 auto; }
.btn3-hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid var(--btn3-sky-3);
  color: var(--btn3-primary); font-size: 12.5px; font-weight: 700;
  padding: 7px 16px; border-radius: 999px; margin-bottom: 24px;
  box-shadow: 0 4px 14px rgba(47,115,242,0.12);
}
.btn3-dot-pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--btn3-primary); animation: btn3-pulse 1.6s infinite; }
@keyframes btn3-pulse {
  0% { box-shadow: 0 0 0 0 rgba(47,115,242,0.55); }
  70% { box-shadow: 0 0 0 8px rgba(47,115,242,0); }
  100% { box-shadow: 0 0 0 0 rgba(47,115,242,0); }
}
.btn3-hero-headline { font-size: 52px; font-weight: 900; line-height: 1.2; letter-spacing: -0.03em; margin: 0 0 20px; }
/* 글자 외곽선(-webkit-text-stroke) 없이 단색으로 — "버튼 만들기" 줄도 그라데이션 대신 단색 파랑 */
.btn3-hero-headline .btn3-grad-text {
  background: none; -webkit-background-clip: border-box; background-clip: border-box;
  -webkit-text-fill-color: var(--btn3-primary); color: var(--btn3-primary);
}
.btn3-type-kakao { color: #ff9f0a; }
.btn3-type-caret { display: inline-block; width: 4px; height: 0.9em; margin-left: 6px; vertical-align: -0.08em; border-radius: 2px; background: var(--btn3-primary); animation: btn3-caret 1s steps(1) infinite; }
@keyframes btn3-caret { 50% { opacity: 0; } }
.btn3-grad-text {
  background: var(--btn3-grad-sky); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.btn3-hero-sub { font-size: 16.5px; color: var(--btn3-text-2); margin: 0 0 32px; line-height: 1.75; }
.btn3-hero-sub strong { color: var(--btn3-primary); font-weight: 700; }
.btn3-hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 8px; }

.btn3-hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  max-width: 820px; margin: 56px auto 0; padding: 20px 0;
  background: rgba(255,255,255,0.75); border: 1px solid var(--btn3-sky-3);
  border-radius: 16px; backdrop-filter: blur(8px);
  box-shadow: 0 8px 28px rgba(47,115,242,0.08);
}
.btn3-hero-stats .btn3-stat-cell { text-align: center; border-right: 1px solid var(--btn3-sky-3); padding: 0 8px; }
.btn3-hero-stats .btn3-stat-cell:last-child { border-right: none; }
.btn3-hero-stats .btn3-stat-value {
  font-size: 22px; font-weight: 900;
  background: var(--btn3-grad-sky); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; letter-spacing: -0.02em; margin-bottom: 4px;
}
.btn3-hero-stats .btn3-stat-label { font-size: 12px; color: var(--btn3-text-3); font-weight: 600; }

/* ----- How it works (Hero 내부) ----- */
.btn3-hero-how { margin: 64px auto 0; max-width: 1080px; }
.btn3-step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.btn3-step-card {
  background: #fff; border: 1px solid var(--btn3-border); border-radius: 16px;
  padding: 28px 22px; text-align: left; transition: all 0.2s;
}
.btn3-step-card:hover { transform: translateY(-4px); box-shadow: var(--btn3-shadow-md); }
.btn3-step-num {
  display: inline-block; font-size: 13px; font-weight: 800;
  background: var(--btn3-grad-sky); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; letter-spacing: 0.08em; margin-right: 6px;
}
.btn3-step-title { font-size: 17px; font-weight: 800; margin: 10px 0 6px; }
.btn3-step-desc { font-size: 13.5px; color: var(--btn3-text-2); line-height: 1.6; }

/* ----- Showcase ----- */
.btn3-showcase { padding: 88px 0; background: linear-gradient(180deg, white 0%, var(--btn3-sky-1) 100%); }
.btn3-show-list { display: flex; flex-direction: column; gap: 90px; }
.btn3-show-row { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; }
.btn3-show-row.btn3-reverse { grid-template-columns: 1.05fr 1fr; }
.btn3-show-row.btn3-reverse .btn3-show-text { order: 2; }
.btn3-show-row.btn3-reverse .btn3-show-visual { order: 1; }
.btn3-show-eyebrow {
  display: inline-block; font-size: 11.5px; font-weight: 800; letter-spacing: 0.15em;
  color: var(--btn3-primary); background: var(--btn3-sky-2); padding: 5px 12px; border-radius: 999px; margin-bottom: 16px;
}
.btn3-show-text h3 { font-size: 27px; font-weight: 900; letter-spacing: -0.02em; line-height: 1.3; margin: 0 0 14px; }
.btn3-show-text p { font-size: 15px; line-height: 1.8; color: var(--btn3-text-2); margin: 0 0 20px; }
.btn3-show-bullets li { font-size: 14px; color: var(--btn3-text-1); padding: 6px 0; display: flex; align-items: center; gap: 10px; }
.btn3-check {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--btn3-grad-sky); color: #fff; font-size: 11px; font-weight: 800; flex-shrink: 0;
}
.btn3-vis-card {
  background: #fff; border: 1px solid var(--btn3-border); border-radius: 18px;
  padding: 22px; box-shadow: 0 20px 50px rgba(47,115,242,0.14); position: relative;
}
.btn3-vis-card::before {
  content: ''; position: absolute; inset: -14px; background: var(--btn3-grad-sky);
  filter: blur(38px); opacity: 0.12; z-index: -1; border-radius: 22px;
}
.btn3-vis-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.btn3-vis-tag { font-size: 11px; font-weight: 800; padding: 3px 10px; border-radius: 999px; background: var(--btn3-sky-2); color: var(--btn3-primary); }
.btn3-vis-buttons { display: flex; flex-direction: column; gap: 8px; }
.btn3-vis-btn-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 10px 12px; border: 1px solid var(--btn3-border); border-radius: 10px; font-size: 13px;
}
.btn3-vis-btn-name { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--btn3-text-1); }
.btn3-vis-pill { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11px; font-weight: 700; background: var(--btn3-success-light); color: #059669; }
.btn3-vis-stat-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.btn3-vis-stat { background: var(--btn3-sky-1); border-radius: 10px; padding: 12px 10px; text-align: center; }
.btn3-vis-stat b { display: block; font-size: 18px; color: var(--btn3-primary); }
.btn3-vis-stat span { font-size: 11px; color: var(--btn3-text-3); }
.btn3-vis-copy-box {
  background: var(--btn3-sky-1); border: 1px dashed var(--btn3-sky-3); border-radius: 10px;
  padding: 14px; font-size: 14px; font-weight: 700; text-align: center; color: var(--btn3-primary); margin-bottom: 12px;
}

/* ----- Features ----- */
.btn3-features { padding: 88px 0; background: #fff; }
.btn3-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.btn3-feature-card {
  padding: 26px; border: 1px solid var(--btn3-border); border-radius: 16px;
  background: var(--btn3-surface); transition: all 0.2s; position: relative; overflow: hidden;
}
.btn3-feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--btn3-grad-sky); transform: scaleX(0); transform-origin: left; transition: transform 0.25s;
}
.btn3-feature-card:hover { transform: translateY(-4px); box-shadow: var(--btn3-shadow-lg); border-color: var(--btn3-sky-3); }
.btn3-feature-card:hover::before { transform: scaleX(1); }
.btn3-feature-icon { font-size: 30px; margin-bottom: 12px; }
.btn3-feature-title { font-size: 16.5px; font-weight: 800; margin-bottom: 8px; }
.btn3-feature-desc { font-size: 13.5px; color: var(--btn3-text-2); line-height: 1.7; }

/* ----- Pricing ----- */
.btn3-pricing { padding: 88px 0; background: linear-gradient(180deg, var(--btn3-sky-1) 0%, white 100%); }
.btn3-price-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.btn3-price-grid-2 { grid-template-columns: repeat(2, 1fr); max-width: 720px; margin: 0 auto; }
.btn3-price-card {
  background: #fff; border: 1px solid var(--btn3-border); border-radius: 16px;
  padding: 30px 26px; display: flex; flex-direction: column; transition: all 0.2s;
}
.btn3-price-card:hover { transform: translateY(-4px); box-shadow: var(--btn3-shadow-md); }
.btn3-price-card.btn3-price-featured { border-color: var(--btn3-primary); box-shadow: 0 12px 32px rgba(47,115,242,0.15); position: relative; }
.btn3-price-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--btn3-grad); color: #fff; font-size: 11px; font-weight: 800;
  padding: 4px 12px; border-radius: 999px;
}
.btn3-price-plan { font-size: 15px; font-weight: 800; color: var(--btn3-text-1); margin-bottom: 16px; }
.btn3-price-period { font-size: 12px; font-weight: 600; color: var(--btn3-primary); margin-bottom: 14px; }
.btn3-price-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 6px; }
.btn3-price-amount { font-size: 28px; font-weight: 900; color: var(--btn3-text-1); }
.btn3-price-amount span { font-size: 13px; font-weight: 600; color: var(--btn3-text-3); }
.btn3-price-amount span i { font-style: normal; }
.btn3-price-amount-sm { font-size: 15px; font-weight: 700; color: var(--btn3-text-3); }
.btn3-price-amount-sm span { font-size: 11px; }
.btn3-price-features { margin: 14px 0 22px; flex: 1; }
.btn3-price-features li { font-size: 13px; color: var(--btn3-text-2); padding: 5px 0; display: flex; align-items: center; gap: 8px; }
.btn3-price-actions { display: flex; gap: 8px; }
.btn3-price-actions .btn3-btn { flex: 1; justify-content: center; padding: 10px 12px; font-size: 13.5px; }

/* ----- CTA ----- */
.btn3-cta {
  padding: 90px 24px;
  background:
    radial-gradient(ellipse at top left, rgba(255,255,255,0.18) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(255,255,255,0.12) 0%, transparent 50%),
    var(--btn3-grad-sky);
  color: #fff; text-align: center;
}
.btn3-cta-inner { max-width: 680px; margin: 0 auto; }
.btn3-cta h2 { font-size: 36px; font-weight: 900; letter-spacing: -0.02em; line-height: 1.3; margin: 0 0 16px; }
.btn3-cta p { font-size: 15.5px; opacity: 0.92; margin: 0 0 28px; }
.btn3-cta .btn3-btn-primary { background: #fff; color: var(--btn3-primary); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.btn3-cta .btn3-btn-primary:hover { transform: translateY(-2px); }

/* ----- Responsive ----- */
.btn3-hide-sm { display: inline; }
@media (max-width: 640px) {
  .btn3-hide-sm { display: none; }
}
@media (max-width: 1240px) {
  .btn3-home-copy-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .btn3-home-copy-card:first-child { grid-column: 1 / -1; }
}
@media (max-width: 1000px) {
  .btn3-hero-headline { font-size: 40px; }
  .btn3-show-row, .btn3-show-row.btn3-reverse { grid-template-columns: 1fr; gap: 32px; }
  .btn3-show-row.btn3-reverse .btn3-show-text { order: 0; }
  .btn3-show-row.btn3-reverse .btn3-show-visual { order: 0; }
  .btn3-feature-grid, .btn3-step-grid { grid-template-columns: repeat(2, 1fr); }
  .btn3-price-grid { grid-template-columns: repeat(2, 1fr); }
  .btn3-hero-stats { max-width: 620px; }
  .btn3-home-copy-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .btn3-home-copy-card:first-child { grid-column: 1 / -1; }
  .btn3-home-notice { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .btn3-home-copy-grid { grid-template-columns: 1fr; }
  .btn3-home-panel { width: 100%; max-width: 400px; justify-self: center; }
}
@media (max-width: 640px) {
  .btn3-hero { padding: 52px 18px 48px; }
  .btn3-home-copy { padding: 20px 12px 4px; }
  .btn3-home-copy-card { padding: 16px 12px 20px; }
  /* 좁은 화면에서도 버튼 3개가 반드시 한 줄에 들어가도록 여백을 줄이고 폭을 나눠 갖는다.
     (이미지의 화면 표시 크기만 바뀌고, '링크 포함 복사' 로 복사되는 HTML 은 그대로다) */
  .btn3-home-copy-preview { display: flex; flex-wrap: nowrap; justify-content: center; gap: 6px; padding: 8px 0; }
  .btn3-landing .btn3-home-copy-preview a { flex: 1 1 0; min-width: 0; max-width: 100px; margin: 0 !important; }
  .btn3-landing .btn3-home-copy-preview img { display: block; width: 100% !important; height: auto !important; max-width: none !important; }
  .btn3-landing .btn3-home-copy-btn { min-width: 0; width: 100%; }
  .btn3-hero-headline { font-size: 30px; }
  .btn3-hero-sub { font-size: 14px; }
  .btn3-section-head h2 { font-size: 24px; }
  .btn3-show-text h3 { font-size: 22px; }
  .btn3-feature-grid, .btn3-step-grid, .btn3-price-grid { grid-template-columns: 1fr; }
  .btn3-cta h2 { font-size: 26px; }
  .btn3-show-list { gap: 60px; }
  .btn3-showcase, .btn3-features, .btn3-pricing, .btn3-cta { padding: 56px 0; }
  .btn3-cta { padding: 56px 18px; }
  .btn3-hero-stats { grid-template-columns: repeat(2, 1fr); }
  .btn3-hero-stats .btn3-stat-cell:nth-child(2) { border-right: none; }
  .btn3-hero-stats .btn3-stat-cell:nth-child(-n+2) { border-bottom: 1px solid var(--btn3-sky-3); padding-bottom: 12px; margin-bottom: 12px; }
}

/* ----- 스크롤 애니메이션(AOS) 안전장치: 스크립트가 준비되기 전·실패 시에는 내용이 보이도록 ----- */
html:not(.btn3-aos-ready) .btn3-landing [data-aos] { opacity: 1 !important; transform: none !important; }
.btn3-count { font-variant-numeric: tabular-nums; }