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

:root {
  --blue:   #0066cc;
  --dark:   #1a1a2e;
  --light:  #f4f6fb;
  --border: #d0d7e3;
  --green:  #1a7f37;
  --red:    #c0392b;
  --radius: 10px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--light);
  color: #222;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  background: var(--dark);
  color: #fff;
  padding: 0.9rem 1.5rem;
}
.header-inner {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.logo { color: #fff; text-decoration: none; font-weight: 700; font-size: 1.2rem; letter-spacing: 0.05em; }
.header-sub { color: #aab; font-size: 0.9rem; flex: 1; }
.header-user { color: #ccd; font-size: 0.85rem; }

/* Main */
main { flex: 1; max-width: 800px; width: 100%; margin: 2.5rem auto; padding: 0 1.5rem; }

/* Card */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 2.5rem;
}
.card.center { text-align: center; }
.card h1 { font-size: 1.8rem; margin-bottom: 0.4rem; color: var(--dark); }
.card h2 { font-size: 1.4rem; margin-bottom: 1.2rem; color: var(--dark); }
.subtitle { color: #666; margin-bottom: 1.8rem; }

/* Steps */
.steps { display: flex; flex-direction: column; gap: 1.2rem; text-align: left; margin: 1.5rem 0 2rem; }
.step { display: flex; align-items: flex-start; gap: 1rem; }
.step-num {
  flex-shrink: 0; width: 2rem; height: 2rem; border-radius: 50%;
  background: var(--blue); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.95rem;
}
.step-body p { color: #555; font-size: 0.9rem; margin-top: 0.2rem; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.75rem 1.5rem; border-radius: 6px;
  font-size: 1rem; font-weight: 600; text-decoration: none;
  cursor: pointer; border: none; transition: opacity .15s;
}
.btn:hover { opacity: 0.88; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-secondary { background: #eee; color: #333; border: 1px solid var(--border); }
.btn-large { padding: 0.9rem 2rem; font-size: 1.05rem; }
.btn-small { background: transparent; color: #ccd; font-size: 0.8rem; border: 1px solid #445; padding: 0.3rem 0.7rem; }

.action-row { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin: 1.8rem 0 1rem; }

/* Microsoft logo */
.icon-ms { width: 20px; height: 20px; flex-shrink: 0; }

/* Notices */
.notice {
  border-radius: 6px; padding: 0.9rem 1.1rem;
  margin: 1rem 0; font-size: 0.95rem; line-height: 1.5;
}
.notice-success { background: #eafaf1; border: 1px solid #a8e6be; color: var(--green); }
.notice-error   { background: #fdf3f2; border: 1px solid #f5c6c2; color: var(--red); }
.notice a { color: inherit; }

/* Form */
.form { display: flex; flex-direction: column; gap: 0.8rem; max-width: 420px; margin-top: 1.2rem; }
.form label { font-weight: 600; font-size: 0.9rem; color: #444; }
.form input {
  padding: 0.65rem 0.9rem; border: 1px solid var(--border);
  border-radius: 6px; font-size: 1rem; width: 100%;
}
.form input:focus { outline: 2px solid var(--blue); border-color: transparent; }
.form button { margin-top: 0.4rem; }

/* Progress */
.progress-wrap {
  width: 100%; height: 18px; background: #e8edf5;
  border-radius: 9px; overflow: hidden; margin: 1.5rem 0 1rem;
}
.progress-bar {
  height: 100%; background: var(--blue);
  border-radius: 9px; transition: width 0.4s ease;
}

.note { color: #777; font-size: 0.88rem; margin-top: 0.5rem; line-height: 1.5; }

/* Footer */
footer { text-align: center; padding: 1.5rem; color: #999; font-size: 0.85rem; }
footer a { color: var(--blue); text-decoration: none; }