:root {
  --blue: #2563eb;
  --blue-dark: #194fbd;
  --blue-soft: #edf4ff;
  --blue-line: #bfd4ff;
  --green: #007a72;
  --green-dark: #00645e;
  --green-soft: #eaf8f6;
  --ink: #101728;
  --muted: #6d7891;
  --line: #dce2ed;
  --line-soft: #e9edf4;
  --surface: #f6f8fb;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 12px 34px rgba(26, 42, 76, 0.07);
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--surface); }
body { margin: 0; min-width: 320px; min-height: 100svh; background: var(--surface); }
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
svg { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; }

.app-shell { min-height: 100svh; }
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;
  width: 190px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 16px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 8px 0 28px rgba(52, 48, 125, 0.05);
}

.brand { display: flex; align-items: center; padding: 0 4px 28px; }
.brand img { display: block; width: 134px; height: auto; object-fit: contain; }

.primary-nav { display: grid; gap: 6px; }
.nav-item {
  width: 100%; min-height: 44px; display: grid; grid-template-columns: 26px minmax(0, 1fr); align-items: center; gap: 11px;
  padding: 10px 11px; border: 0; border-radius: 6px; background: transparent; color: #707a91;
  text-align: left; font-size: 13px; font-weight: 750; line-height: 1.2; cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}
.nav-item:hover { color: var(--blue); background: #f7f9fd; }
.nav-item.is-active { color: var(--blue); background: var(--blue-soft); font-weight: 850; }
.nav-item:active { transform: scale(.985); }
.nav-icon { width: 22px; height: 22px; display: grid; place-items: center; border: 1px solid #d8dfec; border-radius: 6px; background: #fbfcff; color: #7d879d; }
.nav-icon svg { width: 15px; height: 15px; }
.nav-item.is-active .nav-icon { border-color: var(--blue-line); background: #fff; color: var(--blue); }

.sidebar-footer { margin-top: auto; display: grid; gap: 14px; padding-top: 18px; border-top: 1px solid var(--line); }
.exam-registration { padding: 9px 10px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--blue-dark); text-align: center; font-size: 12px; font-weight: 900; box-shadow: 0 8px 18px rgba(52, 48, 125, .05); transition: color 180ms ease, border-color 180ms ease, transform 180ms ease; }
.exam-registration:hover { border-color: var(--blue-line); color: var(--blue); transform: translateY(-1px); }
.credit-card { display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 10px; align-items: center; padding: 12px 13px; border: 0; border-radius: 6px; background: linear-gradient(135deg, #edf4ff, #fbfdff); box-shadow: 0 10px 26px rgba(37, 99, 235, .1); text-align: left; cursor: pointer; }
.credit-symbol { align-self: start; color: var(--blue); font-size: 18px; }
.credit-copy, .credit-lines { display: grid; gap: 5px; }
.credit-lines { gap: 3px; }
.credit-total { color: var(--muted); font-size: 10px; font-weight: 850; }
.temporary-credit, .permanent-credit { display: flex; justify-content: space-between; gap: 8px; font-size: 11px; font-weight: 900; }
.temporary-credit { color: var(--green); }
.permanent-credit { color: var(--blue-dark); }
.account-card { width: 100%; min-height: 44px; display: grid; grid-template-columns: 28px minmax(0, 1fr) 12px; gap: 10px; align-items: center; padding: 8px 10px; border: 0; border-radius: 6px; background: transparent; color: var(--muted); text-align: left; cursor: pointer; }
.account-card:hover { background: var(--blue-soft); color: var(--blue); }
.account-avatar { width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: #778196; color: #fff; font-size: 10px; font-weight: 900; }
.account-copy { display: grid; gap: 2px; min-width: 0; }
.account-copy strong { overflow: hidden; color: var(--ink); font-size: 12px; font-weight: 850; text-overflow: ellipsis; white-space: nowrap; }
.account-copy small { color: var(--muted); font-size: 10px; font-weight: 750; }
.account-chevron { color: var(--muted); font-size: 12px; }
.sidebar-logout { display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 10px; align-items: center; padding: 8px 10px; border: 0; background: transparent; color: var(--muted); text-align: left; font-size: 12px; font-weight: 800; cursor: pointer; }
.sidebar-logout:hover { color: var(--blue); }

.main-area { min-height: 100svh; margin-left: 190px; }
.topbar {
  position: fixed; inset: 0 0 auto 190px; z-index: 30; min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 17px 48px;
  border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .96); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.topbar-welcome { display: flex; align-items: center; gap: 10px; color: #3d358b; }
.topbar-welcome strong { font-size: 13px; font-weight: 800; }
.topbar-logout { padding: 4px 8px; border: 1px solid var(--line); border-radius: 9px; background: #fff; color: var(--muted); font-size: 12px; font-weight: 800; cursor: pointer; transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease; }
.topbar-logout:hover { border-color: var(--blue-line); background: var(--blue-soft); color: var(--blue); }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.topbar-icon-button { width: 36px; height: 36px; display: grid; place-items: center; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: #3d358b; cursor: pointer; transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease, transform 180ms ease; }
.topbar-icon-button svg { width: 17px; height: 17px; stroke-width: 2.1; }
.topbar-icon-button:hover { border-color: var(--blue-line); background: var(--blue-soft); color: var(--blue); transform: translateY(-1px); }

.page-wrap { padding: 82px 48px 44px; }
.page { width: min(1440px, 100%); margin: 0 auto; animation: page-in 220ms ease both; }
.page[hidden] { display: none; }
.page-heading { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 28px; }
.page-heading > div { max-width: 760px; }
.eyebrow, .section-kicker, .card-label { color: var(--green); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.page-heading h1 { margin: 9px 0 8px; font-size: clamp(32px, 4vw, 48px); line-height: 1.08; letter-spacing: -.045em; }
.page-heading p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.65; }

.recommendation-card {
  display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(230px, .62fr) auto; gap: 28px; align-items: center;
  padding: 30px; border: 1px solid #b8d2ff; border-radius: 20px; background: linear-gradient(135deg, #fff 0%, #f5f9ff 58%, #edf5ff 100%); box-shadow: var(--shadow);
}
.recommendation-copy { display: grid; justify-items: start; gap: 8px; }
.task-pill { margin-top: 8px; padding: 6px 10px; border-radius: 999px; background: var(--green-soft); color: var(--green); font-size: 12px; font-weight: 850; }
.recommendation-copy h2 { margin: 4px 0 0; font-size: 25px; letter-spacing: -.025em; }
.recommendation-copy p { margin: 0; color: var(--muted); line-height: 1.6; }
.recommendation-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.recommendation-meta div { display: grid; gap: 5px; padding: 13px; border: 1px solid var(--line-soft); border-radius: 12px; background: rgba(255, 255, 255, .8); }
.recommendation-meta span { color: var(--muted); font-size: 11px; font-weight: 700; }
.recommendation-meta strong { font-size: 13px; }

.primary-button, .secondary-button {
  min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 14px; padding: 12px 20px; border-radius: 12px; font-weight: 850; cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}
.primary-button { border: 0; background: var(--green); color: #fff; box-shadow: 0 10px 22px rgba(0, 122, 114, .18); }
.primary-button:hover { background: var(--green-dark); transform: translateY(-2px); box-shadow: 0 14px 28px rgba(0, 122, 114, .22); }
.secondary-button { border: 1px solid var(--blue-line); background: #fff; color: var(--blue); }
.secondary-button:hover { background: var(--blue-soft); transform: translateY(-1px); }

.section-row { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin: 32px 0 14px; }
.section-row > div { display: grid; gap: 4px; }
.section-row h2 { margin: 0; font-size: 22px; letter-spacing: -.02em; }
.section-kicker { font-size: 10px; }
.text-button { border: 0; background: transparent; color: var(--blue); padding: 7px 0; font-weight: 800; cursor: pointer; }

.quick-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.practice-card {
  min-height: 116px; display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; align-items: center; gap: 17px;
  padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; color: var(--ink); text-align: left; cursor: pointer; box-shadow: 0 4px 14px rgba(26, 42, 76, .04);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease, background-color 220ms ease;
}
.practice-card:hover { transform: translateY(-3px); border-color: var(--blue-line); background: #fbfdff; box-shadow: var(--shadow); }
.practice-card > span:nth-child(2) { display: grid; gap: 7px; }
.practice-card strong { font-size: 17px; }
.practice-card small { color: var(--muted); font-size: 13px; }
.practice-card-icon { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 14px; }
.practice-card-icon svg { width: 23px; height: 23px; }
.practice-card-icon.is-blue { background: var(--blue-soft); color: var(--blue); }
.practice-card-icon.is-green { background: var(--green-soft); color: var(--green); }
.card-arrow { color: var(--blue); font-size: 20px; transition: transform 180ms ease; }
.practice-card:hover .card-arrow { transform: translateX(4px); }

.empty-panel { min-height: 160px; display: flex; align-items: center; justify-content: center; gap: 16px; padding: 28px; border: 1px dashed #cfd7e5; border-radius: var(--radius); background: rgba(255, 255, 255, .58); text-align: center; }
.empty-panel div { text-align: left; }
.empty-panel strong { font-size: 15px; }
.empty-panel p { margin: 6px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.empty-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--blue-soft); color: var(--blue); font-size: 21px; }
.compact-empty { min-height: 108px; }

.split-heading { align-items: center; }
.training-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: 18px; }
.setup-card, .session-card, .profile-banner, .analysis-card { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 4px 14px rgba(26, 42, 76, .04); }
.setup-card { padding: 28px; }
.setup-card h2 { margin: 10px 0 22px; font-size: 24px; }
.step-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.step-list li { display: grid; grid-template-columns: 36px 1fr; gap: 13px; align-items: center; padding: 13px; border-radius: 12px; background: var(--surface); }
.step-list li > span { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: var(--blue); color: #fff; font-size: 12px; font-weight: 900; }
.step-list div { display: grid; gap: 3px; }
.step-list strong { font-size: 14px; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; }
.session-card { display: flex; flex-direction: column; padding: 26px; }
.session-card h3 { margin: 10px 0 22px; font-size: 19px; }
.session-stat { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 0; border-top: 1px solid var(--line-soft); color: var(--muted); font-size: 13px; }
.session-stat strong { color: var(--ink); }
.session-card .secondary-button { margin-top: auto; }
.body-copy { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.75; }
.feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 28px; }
.feature-row span { display: grid; gap: 8px; padding: 16px; border-radius: 12px; background: var(--surface); color: var(--muted); font-size: 12px; font-weight: 750; }
.feature-row b { color: var(--blue); font-size: 11px; }

.official-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.official-card { min-height: 112px; display: grid; grid-template-columns: 48px 1fr auto; gap: 16px; align-items: center; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; color: var(--ink); text-align: left; cursor: pointer; transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease; }
.official-card:hover { border-color: var(--blue-line); transform: translateY(-2px); box-shadow: var(--shadow); }
.official-number { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 13px; background: var(--blue-soft); color: var(--blue); font-size: 13px; font-weight: 900; }
.official-card > span:nth-child(2) { display: grid; gap: 6px; }
.official-card strong { font-size: 16px; }
.official-card small { color: var(--muted); }
.official-card > span:last-child { color: var(--blue); font-size: 20px; }
.official-empty { margin-top: 18px; }

.profile-banner { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 22px; padding: 26px; border-color: var(--blue-line); background: linear-gradient(135deg, #fff, #f3f7ff); }
.profile-ring { width: 68px; height: 68px; display: grid; place-items: center; border-radius: 50%; background: conic-gradient(var(--blue) 0 24%, #dbe7fb 24% 100%); }
.profile-ring span { width: 52px; height: 52px; border-radius: 50%; background: #fff; }
.profile-banner h2 { margin: 7px 0 4px; font-size: 21px; }
.profile-banner p { margin: 0; color: var(--muted); font-size: 13px; }
.analysis-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 18px; }
.analysis-card { min-height: 180px; display: grid; align-content: start; gap: 15px; padding: 22px; }
.metric-icon { width: 39px; height: 39px; display: grid; place-items: center; border-radius: 11px; background: var(--green-soft); color: var(--green); font-size: 13px; font-weight: 900; }
.analysis-card > div { display: grid; gap: 4px; }
.analysis-card strong { font-size: 16px; }
.analysis-card p { margin: 0; color: var(--muted); font-size: 13px; }
.analysis-card small { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line-soft); color: #8993a8; font-size: 11px; font-weight: 750; }

.mobile-header, .mobile-nav { display: none; }
.toast { position: fixed; right: 24px; bottom: 24px; z-index: 100; max-width: 360px; padding: 14px 17px; border-radius: 12px; background: #121a2a; color: #fff; box-shadow: 0 18px 42px rgba(14, 24, 43, .22); font-size: 13px; font-weight: 750; animation: toast-in 180ms ease both; }
.toast[hidden] { display: none; }

button:focus-visible, a:focus-visible { outline: 3px solid rgba(37, 99, 235, .25); outline-offset: 3px; }
@keyframes page-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

@media (max-width: 1050px) {
  .recommendation-card { grid-template-columns: 1fr auto; }
  .recommendation-meta { grid-column: 1 / 2; }
  .recommendation-card > .primary-button { grid-column: 2; grid-row: 1 / span 2; }
}

@media (max-width: 760px) {
  body { background: #fff; }
  .sidebar, .topbar { display: none; }
  .mobile-header { position: fixed; inset: 0 0 auto; z-index: 70; min-height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: calc(9px + env(safe-area-inset-top)) 15px 9px; border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .96); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
  .mobile-brand { display: flex; align-items: center; gap: 8px; }
  .mobile-brand img { width: 105px; height: auto; }
  .mobile-brand span { padding-left: 8px; border-left: 1px solid var(--line); color: var(--blue); font-size: 11px; font-weight: 850; }
  .mobile-support { padding: 7px 10px; border: 1px solid var(--line); border-radius: 9px; color: var(--blue); font-size: 11px; font-weight: 800; }
  .main-area { margin-left: 0; padding-top: calc(60px + env(safe-area-inset-top)); padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
  .page-wrap { padding: 22px 14px 30px; }
  .page-heading { align-items: start; margin-bottom: 20px; }
  .page-heading h1 { margin-top: 7px; font-size: 31px; letter-spacing: -.035em; }
  .page-heading p { font-size: 14px; }
  .split-heading { display: grid; }
  .split-heading .primary-button { width: 100%; }
  .recommendation-card { display: grid; grid-template-columns: 1fr; gap: 18px; padding: 22px; }
  .recommendation-meta { grid-column: auto; }
  .recommendation-card > .primary-button { grid-column: auto; grid-row: auto; width: 100%; }
  .recommendation-copy h2 { font-size: 22px; }
  .quick-grid, .official-grid, .analysis-grid, .training-layout { grid-template-columns: 1fr; }
  .practice-card { min-height: 100px; padding: 17px; }
  .session-card { min-height: 290px; }
  .section-row { margin-top: 26px; }
  .feature-row { grid-template-columns: 1fr; }
  .feature-row span { grid-template-columns: 28px 1fr; align-items: center; }
  .profile-banner { grid-template-columns: auto 1fr; padding: 21px; }
  .profile-banner .secondary-button { grid-column: 1 / -1; width: 100%; }
  .analysis-card { min-height: 150px; }
  .mobile-nav { position: fixed; inset: auto 0 0; z-index: 75; min-height: 66px; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1px; padding: 5px 4px calc(5px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: rgba(255, 255, 255, .97); box-shadow: 0 -8px 24px rgba(31, 55, 94, .07); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
  .mobile-nav button { min-width: 0; min-height: 54px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; border: 0; border-radius: 10px; background: transparent; color: #7a8498; padding: 4px 1px; font-weight: 800; }
  .mobile-nav button.is-active { background: var(--blue-soft); color: var(--blue); }
  .mobile-nav button > span { font-size: 15px; line-height: 1; }
  .mobile-nav small { font-size: 9px; }
  .toast { right: 14px; bottom: calc(82px + env(safe-area-inset-bottom)); left: 14px; max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}