:root {
  --docroi-black: #000000;
  --docroi-ink: #05070b;
  --docroi-ink-2: #0b0f19;
  --docroi-blue: #003b5c;
  --docroi-ice: #d8ecf8;
  --docroi-ice-soft: #eaf6fb;
  --docroi-bg: #f4f6f8;
  --docroi-bg-2: #f6f7f9;
  --docroi-line: #dde5ee;
  --docroi-line-2: #e1e7ef;
  --docroi-line-3: #e5e7eb;
  --docroi-text: #566273;
  --docroi-muted: #5b6472;
  --docroi-white: #ffffff;
  --docroi-success: #2f7d55;
  --docroi-warning: #b7791f;
  --docroi-danger: #b33a3a;
  --docroi-shadow: 0 14px 34px rgba(11, 15, 25, 0.05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--docroi-ink-2);
  background: var(--docroi-bg);
  font-family: Inter, Helvetica, Arial, sans-serif;
}

button, input, select, textarea { font: inherit; }
h1, h2, h3, p { margin-top: 0; }

h1 {
  margin-bottom: 0;
  font-size: clamp(42px, 8vw, 82px);
  line-height: 0.99;
  letter-spacing: 0;
  font-weight: 900;
}

h2 { margin-bottom: 0; font-weight: 900; }
h3 { margin-bottom: 0; font-size: 1.2rem; font-weight: 900; }

.docroi-page { min-height: 100vh; overflow-x: hidden; }
.docroi-shell { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 22px; }

.docroi-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(5, 7, 11, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.docroi-header-row {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.docroi-logo img { height: 48px; filter: brightness(0) invert(1); }
.docroi-top-nav { display: flex; align-items: center; gap: 8px; }

.docroi-top-nav a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 800;
  padding: 10px 12px;
  border-radius: 999px;
}

.docroi-top-nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }

.docroi-hero {
  background:
    radial-gradient(circle at 78% 20%, rgba(216, 236, 248, 0.14), transparent 30%),
    radial-gradient(circle at 12% 78%, rgba(0, 59, 92, 0.48), transparent 28%),
    linear-gradient(180deg, #05070b 0%, #0b0f19 48%, #003b5c 100%);
  color: #fff;
  padding: 92px 0 84px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(330px, 0.85fr);
  gap: 34px;
  align-items: center;
}

.hero-copy p:not(.docroi-kicker) {
  max-width: 760px;
  margin: 22px 0 0;
  color: rgba(216, 236, 248, 0.88);
  font-size: 1.08rem;
  line-height: 1.8;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.hero-diagnosis {
  position: relative;
  overflow: hidden;
  background: #fff;
  color: var(--docroi-ink-2);
  border: 1px solid var(--docroi-line-2);
  border-radius: 32px;
  padding: 32px;
  box-shadow: 0 28px 70px rgba(6, 17, 31, 0.28);
}

.hero-diagnosis:before, .docroi-card:before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 9px;
  background: linear-gradient(90deg, #003b5c, #d8ecf8, #003b5c);
}

.hero-diagnosis h2 {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.05;
  letter-spacing: 0;
  margin-bottom: 20px;
}

.hero-diagnosis ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }

.hero-diagnosis li {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px;
  background: var(--docroi-bg-2);
  border: 1px solid var(--docroi-line-2);
  border-radius: 20px;
}

.hero-diagnosis li strong {
  min-height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--docroi-ink-2);
  color: #fff;
  font-weight: 900;
}

.hero-diagnosis li span { color: var(--docroi-muted); font-weight: 700; }

.docroi-section { padding: 72px 0; }
.intro-section { background: var(--docroi-bg); }
.simulator-section, .map-section { background: var(--docroi-bg-2); }

.docroi-section-title {
  max-width: 880px;
  margin-bottom: 26px;
  font-size: clamp(31px, 6vw, 50px);
  line-height: 1.08;
  letter-spacing: 0;
  font-weight: 900;
}

.docroi-kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 9px 14px;
  margin: 0 0 18px;
  background: var(--docroi-ice-soft);
  color: var(--docroi-blue);
  border: 1px solid var(--docroi-ice);
  font-size: 11px;
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.docroi-kicker-dark { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.16); color: var(--docroi-ice); }

.docroi-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 54px;
  padding: 14px 22px;
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.15;
  font-weight: 900;
  text-align: center;
  text-decoration: none;
  transition: 0.18s ease;
  cursor: pointer;
}

.docroi-btn:hover { transform: translateY(-1px); opacity: 0.95; }
.docroi-btn-dark { background: var(--docroi-ink-2); color: #fff; border: 1px solid var(--docroi-ink-2); box-shadow: 0 12px 26px rgba(11,15,25,.12); }
.docroi-btn-light { background: #fff; color: var(--docroi-ink-2); border: 1px solid #fff; }
.docroi-btn-soft { background: var(--docroi-ice-soft); color: var(--docroi-blue); border: 1px solid var(--docroi-ice); }
.docroi-btn-secondary { background: #fff; color: var(--docroi-ink-2); border: 1px solid var(--docroi-line-2); }
.docroi-btn.compact { min-height: 44px; padding: 11px 16px; }
.full-width { width: 100%; margin-top: 18px; }

.learning-flow, .practice-nav, .metric-grid { display: grid; gap: 18px; }
.learning-flow { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.learning-flow article {
  min-height: 164px;
  padding: 24px;
  border: 1px solid var(--docroi-line-2);
  border-radius: 28px;
  background: #fff;
  box-shadow: var(--docroi-shadow);
}

.learning-flow span {
  display: inline-flex;
  min-width: 42px;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: 14px;
  background: var(--docroi-ink-2);
  color: #fff;
  font-size: .82rem;
  font-weight: 900;
}

.learning-flow strong { display: block; margin-bottom: 8px; font-size: 1.05rem; font-weight: 900; }
.learning-flow p { margin-bottom: 0; color: var(--docroi-muted); line-height: 1.55; }

.simulator-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; margin-bottom: 22px; }

.mode-badge {
  flex: 0 0 auto;
  padding: 10px 14px;
  border: 1px solid var(--docroi-ice);
  border-radius: 999px;
  background: #fff;
  color: var(--docroi-blue);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.practice-nav { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 26px; }

.practice-tab {
  min-height: 132px;
  padding: 18px;
  border: 1px solid var(--docroi-line-2);
  border-radius: 26px;
  background: #fff;
  color: var(--docroi-ink-2);
  text-align: left;
  box-shadow: var(--docroi-shadow);
  cursor: pointer;
  transition: .18s ease;
}

.practice-tab:hover, .practice-tab.active { transform: translateY(-2px); border-color: var(--docroi-ice); box-shadow: 0 18px 44px rgba(0,59,92,.12); }
.practice-tab.active { background: linear-gradient(180deg, #0b0f19, #05070b); color: #fff; }
.practice-tab strong { display: block; margin-bottom: 9px; font-size: .85rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.practice-tab span { display: block; color: var(--docroi-muted); line-height: 1.4; font-weight: 600; }
.practice-tab.active span { color: rgba(216,236,248,.86); }

.work-grid { display: grid; grid-template-columns: minmax(330px, .95fr) minmax(420px, 1.05fr); gap: 28px; align-items: start; }

.docroi-card {
  position: relative;
  overflow: hidden;
  background: #fff;
  color: var(--docroi-ink-2);
  border: 1px solid var(--docroi-line-2);
  border-radius: 30px;
  padding: 32px;
  box-shadow: var(--docroi-shadow);
}

.panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; margin-bottom: 18px; }
.practice-intro { margin-bottom: 18px; color: var(--docroi-muted); font-size: 1rem; line-height: 1.76; }
.input-grid { display: grid; gap: 16px; }
.field-row { display: grid; gap: 8px; }
.field-row label { font-weight: 900; }

.field-row input, .field-row select, .field-row textarea {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--docroi-line-2);
  border-radius: 16px;
  padding: 11px 14px;
  color: var(--docroi-ink-2);
  background: #fff;
}

.field-row textarea { min-height: 82px; resize: vertical; }
.field-help { margin: 0; color: var(--docroi-muted); font-size: .86rem; line-height: 1.48; }
.result-view { display: grid; gap: 14px; }

.decision-strip {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, #0b0f19, #05070b);
  color: #fff;
  border: 1px solid rgba(255,255,255,.1);
}

.decision-strip strong { font-size: 1.1rem; }
.score-pill { min-width: 74px; min-height: 52px; display: grid; place-items: center; border-radius: 999px; background: var(--docroi-ice-soft); color: var(--docroi-blue); font-weight: 900; }
.metric-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.metric { min-height: 118px; border: 1px solid var(--docroi-line-2); border-radius: 22px; padding: 18px; background: var(--docroi-bg-2); }
.metric span { display: block; margin-bottom: 8px; color: var(--docroi-muted); font-size: .74rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.metric strong { display: block; font-size: 1.06rem; line-height: 1.28; font-weight: 900; overflow-wrap: anywhere; }

.explain-list, .process-view { display: grid; gap: 10px; }
.explain-item, .process-step { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 14px; padding: 18px; border: 1px solid var(--docroi-line-2); border-radius: 22px; background: var(--docroi-bg-2); }
.explain-item span, .process-step span { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 14px; background: var(--docroi-blue); color: #fff; font-weight: 900; }
.explain-item p, .process-step p { margin-bottom: 0; color: var(--docroi-muted); line-height: 1.62; }

.ranking-table { width: 100%; border-collapse: collapse; overflow: hidden; border: 1px solid var(--docroi-line-2); border-radius: 22px; }
.ranking-table th, .ranking-table td { padding: 12px; border-bottom: 1px solid var(--docroi-line-2); text-align: left; font-size: .9rem; }
.ranking-table th { background: var(--docroi-ice-soft); color: var(--docroi-blue); font-size: .75rem; font-weight: 900; text-transform: uppercase; }
.status-ok { color: var(--docroi-success); }
.status-warn { color: var(--docroi-warning); }
.status-bad { color: var(--docroi-danger); }

.docroi-footer { background: #000; color: #fff; padding: 68px 24px 54px; text-align: center; }
.docroi-footer img { max-width: 240px; height: auto; margin-bottom: 22px; filter: brightness(0) invert(1); }
.docroi-footer p { color: rgba(255,255,255,.78); margin-bottom: 8px; }
.docroi-footer .legal { margin-bottom: 0; font-size: .86rem; }

@media (max-width: 1050px) {
  .hero-grid, .work-grid, .learning-flow, .practice-nav { grid-template-columns: 1fr; }
  .practice-tab { min-height: auto; }
}

@media (max-width: 760px) {
  .docroi-shell { padding: 0 18px; }
  .docroi-header-row { min-height: 70px; }
  .docroi-logo img { height: 38px; }
  .docroi-top-nav { display: none; }
  .docroi-hero { padding: 64px 0 56px; }
  h1 { font-size: 38px; letter-spacing: 0; }
  .docroi-section { padding: 56px 0; }
  .docroi-card, .hero-diagnosis { padding: 22px; border-radius: 24px; }
  .panel-head, .simulator-head, .decision-strip { display: grid; }
  .metric-grid { grid-template-columns: 1fr; }
  .docroi-btn { width: 100%; }
}