/* 학습방법 페이지 (#/guide) — 접두어 gd- */
.view:has(> .gd) { max-width: 1120px; }
.gd { display: flex; flex-direction: column; gap: 22px; }
.gd em { font-style: normal; }

/* 머리말 */
.gd-hero {
  padding: 34px 34px 26px; border-radius: 26px; color: #fff;
  background: linear-gradient(135deg, #0b7577 0%, #17a6a7 45%, #2dc4c4 100%);
  box-shadow: 0 14px 34px -16px rgba(11, 117, 119, .65);
}
.gd-kick { display: inline-block; padding: 4px 12px; border-radius: 999px; background: rgba(255, 255, 255, .18); font-size: 13.5px; font-weight: 800; }
.gd-hero h1 { margin: 14px 0 10px; font-size: 34px; font-weight: 900; line-height: 1.3; letter-spacing: -0.04em; }
.gd-hero h1 em { color: #fff3b0; }
.gd-hero > p { margin: 0 0 20px; font-size: 16.5px; opacity: .95; }
.gd-nav { display: flex; flex-wrap: wrap; gap: 8px; }
.gd-nav a {
  display: inline-flex; align-items: center; gap: 7px; padding: 8px 13px 8px 8px; border-radius: 999px;
  background: rgba(255, 255, 255, .95); color: #1c2b30; font-size: 14px; font-weight: 800; transition: transform .15s ease;
}
.gd-nav a:hover { transform: translateY(-2px); }
.gd-nav b { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--c); color: #fff; font-size: 12px; }

/* 단계 */
.gd-step {
  display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.4fr); gap: 26px 34px; align-items: center;
  padding: 30px; border-radius: 24px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
  scroll-margin-top: calc(var(--hdr-h, 64px) + 12px);
}
.gd-step.alt .gd-txt { order: 2; }
.gd-no {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border-radius: 999px;
  background: color-mix(in srgb, var(--c) 14%, transparent); color: var(--c); font-size: 13px; font-weight: 900; letter-spacing: .01em;
}
.gd-no svg { width: 16px; height: 16px; }
.gd-txt h2 { margin: 12px 0 10px; font-size: 26px; font-weight: 900; line-height: 1.32; letter-spacing: -0.04em; }
.gd-txt h2 em { color: var(--c); }
.gd-txt p { margin: 0 0 14px; color: var(--text-2); font-size: 15.5px; line-height: 1.75; }
.gd-txt ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.gd-txt li { display: flex; align-items: flex-start; gap: 8px; font-size: 15px; font-weight: 700; }
.gd-txt li svg { flex: none; width: 18px; height: 18px; margin-top: 2px; padding: 2px; border-radius: 50%; background: var(--c); color: #fff; stroke-width: 3; }

/* 화면 틀: PC 창 · 스마트폰 */
.gd-vis { position: relative; display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.gd-pc { margin: 0; border-radius: 12px; overflow: hidden; background: #fff; border: 1px solid rgba(0, 0, 0, .12); box-shadow: 0 16px 34px -18px rgba(20, 40, 50, .55); }
.gd-pc-bar { display: flex; align-items: center; gap: 6px; height: 26px; padding: 0 10px; background: #eef1f3; border-bottom: 1px solid #dde3e6; }
.gd-pc-bar i { width: 9px; height: 9px; border-radius: 50%; background: #ff5f57; }
.gd-pc-bar i:nth-child(2) { background: #febc2e; }
.gd-pc-bar i:nth-child(3) { background: #28c840; }
.gd-pc-bar span { margin-left: 10px; padding: 2px 12px; border-radius: 6px; background: #fff; color: #6b7a80; font-size: 11px; }
.gd-pc img, .gd-ph img { display: block; width: 100%; height: auto; }
.gd-ph { margin: 0; width: 100%; max-width: 250px; padding: 7px; border-radius: 32px; background: #14191c; box-shadow: 0 18px 34px -16px rgba(0, 0, 0, .6); }
.gd-ph img { border-radius: 25px; }
.gd-duo { position: relative; padding-right: 13%; padding-bottom: 6%; }
.gd-duo .gd-float { position: absolute; right: 0; bottom: 0; width: 27%; max-width: 200px; padding: 5px; border-radius: 24px; }
.gd-duo .gd-float img { border-radius: 19px; }
.gd-pair { display: grid; grid-template-columns: 1fr; gap: 14px; }
.gd-phones { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; justify-items: center; }
.gd-phones .gd-ph { max-width: 220px; }
.gd-phones .gd-ph:nth-child(2) { transform: translateY(-14px); }

/* 끝 안내 */
.gd-cta { padding: 34px 26px; border-radius: 26px; text-align: center; background: #1f2d33; color: #eef6f6; }
.gd-cta h2 { margin: 0 0 8px; font-size: 30px; font-weight: 900; letter-spacing: -0.04em; }
.gd-cta h2 em { color: #7fe3e0; }
.gd-cta p { margin: 0 0 20px; opacity: .85; }
.gd-cta-b { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.gd-cta-b .btn { min-width: 170px; justify-content: center; }
.gd-cta-b .btn:not(.primary) { background: rgba(255, 255, 255, .12); color: #fff; border-color: rgba(255, 255, 255, .55); }

@media (max-width: 900px) {
  .gd-step { grid-template-columns: 1fr; padding: 22px 18px; }
  .gd-step.alt .gd-txt { order: 0; }
}
@media (max-width: 640px) {
  .gd-hero { padding: 24px 18px 20px; border-radius: 22px; }
  .gd-hero h1 { font-size: 25px; }
  .gd-hero h1 br { display: none; }
  .gd-hero > p { font-size: 15px; }
  .gd-nav a { font-size: 13px; padding: 6px 11px 6px 6px; }
  .gd-txt h2 { font-size: 22px; }
  .gd-txt p { font-size: 15px; }
  .gd-duo { padding-right: 16%; padding-bottom: 10%; }
  .gd-duo .gd-float { width: 33%; border-radius: 16px; padding: 3px; }
  .gd-duo .gd-float img { border-radius: 13px; }
  .gd-phones { gap: 8px; }
  .gd-phones .gd-ph { padding: 4px; border-radius: 18px; }
  .gd-phones .gd-ph img { border-radius: 14px; }
  .gd-pc-bar { height: 20px; }
  .gd-pc-bar span { display: none; }
  .gd-cta h2 { font-size: 23px; }
  .gd-cta-b .btn { flex: 1 1 100%; }
}

/* ---------- 시험 안내 (#/exam, exam.js) ---------- */
.view:has(> .ex) { max-width: 980px; }
.ex { display: flex; flex-direction: column; gap: 16px; }
.ex-sec h2 { display: flex; align-items: center; gap: 8px; margin: 0 0 12px; font-size: 20px; font-weight: 900; letter-spacing: -0.03em; }
.ex-sec h2 svg { width: 21px; height: 21px; color: var(--accent-ink); }
.ex-t { width: 100%; border-collapse: collapse; font-size: 15px; }
.ex-t th, .ex-t td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; line-height: 1.6; }
.ex-t th { background: var(--surface-2); font-size: 13.5px; color: var(--text-2); }
.ex-note { margin: 10px 0 0; font-size: 13.5px; color: var(--text-2); }
.ex-list { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; font-size: 15px; line-height: 1.7; }
.ex-why ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ex-why li { display: flex; gap: 12px; padding: 14px; border-radius: 16px; background: var(--surface-2); }
.ex-why-ic { flex: none; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: color-mix(in srgb, var(--brand, #2dc4c4) 18%, transparent); color: var(--accent-ink); }
.ex-why-ic svg { width: 21px; height: 21px; }
.ex-why b { font-size: 16px; }
.ex-why p { margin: 4px 0 0; font-size: 14px; line-height: 1.65; color: var(--text-2); }
.ex-cta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.ex-src { margin: 0; font-size: 12.5px; color: var(--muted); text-align: center; }
@media (max-width: 760px) { .ex-why ul { grid-template-columns: 1fr; } .ex-t { font-size: 13.5px; } .ex-t th, .ex-t td { padding: 8px 8px; } .ex-cta .btn { flex: 1 1 100%; justify-content: center; } }