.tutorial-page { width: min(100%, 1080px); margin: 0 auto; padding: 18px 22px 40px; }
.tutorial-intro, .tutorial-step, .tutorial-reminder { border: 1px solid #ced9d4; border-radius: 16px; background: #fff; box-shadow: 0 2px 3px rgba(18,45,37,.13); }
.tutorial-intro { padding: 24px; }
.back-link { display: inline-flex; align-items: center; gap: 6px; color: #0f6f62; text-decoration: none; font-weight: 800; }
.back-link svg { width: 17px; }
.tutorial-intro h1 { margin: 18px 0 14px; color: #091f2c; font-size: 38px; line-height: 1.2; }
.format-panel { display: grid; gap: 10px; border: 1px solid #c9d5d0; border-radius: 13px; padding: 16px; background: #f7faf8; }
.format-panel span { color: #64746e; font-size: 14px; font-weight: 700; }
.format-panel strong { font-size: 21px; }
.tutorial-intro > p { margin: 22px 0 18px; color: #50615b; }
.tutorial-intro nav { display: flex; flex-wrap: wrap; gap: 8px; }
.tutorial-intro nav a { border: 1px solid #c5d0cb; border-radius: 8px; padding: 9px 13px; color: #17352d; text-decoration: none; font-size: 13px; font-weight: 800; }
.tutorial-step { margin-top: 24px; padding: 20px; }
.tutorial-step h2 { margin: 0 0 12px; color: #071e2b; font-size: 23px; }
.tutorial-step > p { margin: 0 0 16px; color: #536762; line-height: 1.7; }
.chatgpt-button { border-color: #12241f; background: #12241f; color: #fff; }
.tutorial-step figure { display: grid; place-items: center; margin: 16px 0 0; overflow: hidden; border: 1px solid #cbd7d2; border-radius: 12px; padding: 8px; background: #fafcfb; }
.tutorial-step img { display: block; max-width: 100%; height: auto; }
.compact-step { padding-bottom: 20px; }
.tutorial-reminder { margin-top: 24px; padding: 20px; }
.tutorial-reminder > strong { display: block; color: #17352d; margin-bottom: 13px; }
.tutorial-reminder p { color: #536762; line-height: 1.7; }
.tutorial-reminder div { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
@media (max-width: 640px) {
  .tutorial-page { padding: 10px 8px 26px; }
  .tutorial-intro, .tutorial-step, .tutorial-reminder { border-radius: 8px; }
  .tutorial-intro { padding: 18px 14px; }
  .tutorial-intro h1 { font-size: 29px; }
  .tutorial-step { margin-top: 14px; padding: 16px 12px; }
  .tutorial-step h2 { font-size: 20px; }
  .tutorial-reminder { margin-top: 14px; padding: 16px 12px; }
}