:root {
  color-scheme: dark;
  --ink: #f5f8fb;
  --muted: #9eabb8;
  --blue: #45aeff;
  --blue-soft: #89ceff;
  --line: rgba(151, 194, 226, 0.17);
  --panel: rgba(12, 20, 29, 0.82);
  --panel-solid: #0c141d;
  --night: #05090e;
  --night-2: #08111a;
  --green: #66d6a3;
  --amber: #f5c86f;
  --red: #ff8686;
  --radius: 18px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: #05090e;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 6%, rgba(28, 133, 214, 0.18), transparent 31rem),
    linear-gradient(180deg, var(--night) 0%, #07101a 44%, var(--night) 100%);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--blue-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: white;
}

img {
  max-width: 100%;
}

.shell {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 9, 14, 0.88);
  backdrop-filter: blur(16px);
}

.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  color: white;
  text-decoration: none;
}

.brand img {
  width: 148px;
  height: auto;
}

.brand-tag {
  padding-left: 16px;
  border-left: 1px solid var(--line);
  color: var(--blue-soft);
  font: 700 0.7rem/1.1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.83rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links a {
  color: #cbd5df;
  text-decoration: none;
}

.nav-links .nav-cta {
  padding: 11px 16px;
  border: 1px solid rgba(69, 174, 255, 0.55);
  border-radius: 10px;
  color: white;
  background: rgba(32, 136, 218, 0.13);
}

.hero {
  position: relative;
  padding: 72px 0 34px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 52px;
  align-items: center;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
  color: var(--blue-soft);
  font: 700 0.75rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 42px;
  height: 1px;
  background: var(--blue);
  box-shadow: 0 0 14px rgba(69, 174, 255, 0.85);
}

h1,
h2,
h3 {
  font-family: "Arial Narrow", Inter, ui-sans-serif, sans-serif;
  letter-spacing: -0.035em;
  line-height: 1.04;
}

h1 {
  max-width: 800px;
  margin: 0;
  font-size: clamp(3rem, 7vw, 6.5rem);
  text-transform: uppercase;
}

.hero-lead {
  max-width: 720px;
  margin: 28px 0 26px;
  color: #cbd5df;
  font-size: clamp(1.05rem, 1.6vw, 1.28rem);
  line-height: 1.6;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  color: var(--muted);
  font: 600 0.72rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hero-visual {
  position: relative;
}

.hero-visual::before {
  content: "忍";
  position: absolute;
  top: -64px;
  right: -8px;
  z-index: -1;
  color: rgba(69, 174, 255, 0.08);
  font: 700 13rem/1 serif;
}

.hero-card {
  overflow: hidden;
  border: 1px solid rgba(109, 185, 238, 0.23);
  border-radius: 24px;
  background: #09131c;
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.48);
}

.hero-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.hero-caption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  color: #aebbc7;
  font: 600 0.7rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.verified {
  color: var(--green);
}

.route {
  margin: 38px auto 62px;
  padding: 18px 22px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(9, 18, 27, 0.72);
  color: #dbe8f3;
  font: 700 0.72rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.11em;
  text-align: center;
  white-space: nowrap;
}

.route b {
  color: var(--blue-soft);
}

.article-grid {
  display: grid;
  grid-template-columns: 240px minmax(0, 760px);
  gap: 64px;
  justify-content: center;
  align-items: start;
  padding-bottom: 100px;
}

.toc {
  position: sticky;
  top: 28px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(8, 16, 24, 0.78);
}

.toc-label {
  margin: 0 0 14px;
  color: var(--blue-soft);
  font: 700 0.67rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.toc a {
  display: block;
  padding: 8px 0;
  border-top: 1px solid rgba(151, 194, 226, 0.1);
  color: #aebbc7;
  font-size: 0.83rem;
  line-height: 1.35;
  text-decoration: none;
}

.toc a:first-of-type {
  border-top: 0;
}

.article {
  min-width: 0;
  font-size: 1.03rem;
}

.article h2 {
  margin: 76px 0 22px;
  font-size: clamp(2rem, 5vw, 3.45rem);
  text-transform: uppercase;
}

.article h2:first-child {
  margin-top: 0;
}

.article h3 {
  margin: 46px 0 14px;
  color: #e9f5ff;
  font-size: 1.7rem;
}

.article p,
.article li {
  color: #c7d1da;
}

.article strong {
  color: white;
}

.article ul,
.article ol {
  padding-left: 1.25rem;
}

.article li {
  margin: 9px 0;
}

.article blockquote {
  margin: 34px 0;
  padding: 24px 26px;
  border-left: 3px solid var(--blue);
  border-radius: 0 14px 14px 0;
  background: rgba(34, 132, 207, 0.1);
  color: white;
  font-size: 1.1rem;
}

.article code {
  padding: 0.14em 0.4em;
  border: 1px solid rgba(104, 176, 229, 0.22);
  border-radius: 6px;
  color: #aee0ff;
  background: rgba(8, 18, 28, 0.92);
  font: 0.88em ui-monospace, SFMono-Regular, Menlo, monospace;
  overflow-wrap: anywhere;
}

.file-contract {
  margin: 22px 0;
  padding: 20px;
  border: 1px solid rgba(69, 174, 255, 0.26);
  border-radius: 14px;
  background: rgba(6, 14, 22, 0.82);
}

.file-contract code {
  display: block;
  padding: 12px 14px;
  font-size: 0.92rem;
}

.table-wrap {
  margin: 30px 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: rgba(7, 15, 23, 0.72);
}

th,
td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
  font-size: 0.86rem;
  line-height: 1.45;
}

th:last-child,
td:last-child {
  border-right: 0;
}

th {
  color: white;
  background: rgba(42, 132, 198, 0.14);
  font: 700 0.7rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.go {
  color: var(--green);
}

.hold {
  color: var(--amber);
}

.stop {
  color: var(--red);
}

.shortcut {
  margin: 18px 0;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(11, 21, 31, 0.72);
}

.shortcut h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
}

.shortcut p {
  margin: 0;
}

.cta-panel {
  margin: 70px 0;
  padding: clamp(28px, 6vw, 52px);
  border: 1px solid rgba(69, 174, 255, 0.4);
  border-radius: 24px;
  background:
    radial-gradient(circle at 90% 10%, rgba(69, 174, 255, 0.2), transparent 18rem),
    linear-gradient(140deg, #0a1722, #071019);
}

.cta-panel h2 {
  margin: 0 0 16px;
  font-size: clamp(2.1rem, 5vw, 4rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid rgba(69, 174, 255, 0.58);
  border-radius: 10px;
  color: white;
  background: #1685d5;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.button.secondary {
  color: #d4e6f5;
  background: transparent;
}

.faq {
  margin-top: 80px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  padding: 22px 0;
  color: white;
  font-size: 1.05rem;
  font-weight: 750;
}

.faq details p {
  margin-top: -8px;
  padding-bottom: 20px;
}

.references {
  margin-top: 72px;
  padding: 26px;
  border-radius: 16px;
  background: rgba(8, 15, 22, 0.68);
}

.references h2 {
  margin-top: 0;
  font-size: 1.55rem;
}

.references li {
  font-size: 0.86rem;
}

.disclosure {
  margin-top: 32px;
  padding: 18px 20px;
  border: 1px solid rgba(245, 200, 111, 0.28);
  border-radius: 14px;
  color: #cbd4dc;
  background: rgba(117, 84, 22, 0.09);
  font-size: 0.88rem;
}

.site-footer {
  position: relative;
  z-index: 1;
  padding: 44px 0 56px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #05090e;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: #b8c6d2;
  font-size: 0.83rem;
  text-decoration: none;
}

.research-hero {
  padding: 88px 0 56px;
}

.research-hero h1 {
  max-width: 900px;
}

.research-intro {
  max-width: 700px;
  color: #c5d2dd;
  font-size: 1.2rem;
}

.research-list {
  display: grid;
  gap: 28px;
  padding: 18px 0 110px;
}

.article-card {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  color: inherit;
  background: rgba(9, 18, 27, 0.82);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.32);
  text-decoration: none;
}

.article-card img {
  width: 100%;
  height: 100%;
  min-height: 390px;
  object-fit: cover;
}

.card-copy {
  padding: clamp(30px, 6vw, 64px);
}

.card-copy h2 {
  margin: 16px 0 20px;
  color: white;
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  text-transform: uppercase;
}

.card-copy p {
  color: #bcc9d4;
  font-size: 1.06rem;
}

.read-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--blue-soft);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.power-hero {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid rgba(102, 214, 163, 0.25);
  border-radius: 24px;
  background:
    linear-gradient(rgba(69, 174, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(69, 174, 255, 0.045) 1px, transparent 1px),
    radial-gradient(circle at 88% 12%, rgba(102, 214, 163, 0.15), transparent 17rem),
    #071019;
  background-size: 28px 28px, 28px 28px, auto, auto;
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.48);
}

.power-hero::before {
  content: "W";
  position: absolute;
  top: -74px;
  right: -14px;
  color: rgba(69, 174, 255, 0.055);
  font: 800 16rem/1 Inter, sans-serif;
}

.power-hero__request {
  position: relative;
  display: flex;
  justify-content: space-between;
  margin: 0 0 15px;
  padding: 11px 13px;
  border: 1px solid rgba(245, 200, 111, 0.24);
  border-radius: 10px;
  color: #f5c86f;
  background: rgba(93, 67, 20, 0.12);
  font: 800 0.67rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.12em;
}

.power-hero__request span {
  color: #aebbc7;
}

.power-chain {
  position: relative;
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.power-chain li {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  gap: 11px;
  align-items: center;
  margin: 0;
  padding: 12px 13px;
  border: 1px solid rgba(151, 194, 226, 0.13);
  border-radius: 11px;
  color: #dfeaf2;
  background: rgba(7, 15, 23, 0.82);
  font: 700 0.74rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.05em;
}

.power-chain li b {
  color: var(--blue-soft);
}

.power-chain li em {
  color: var(--green);
  font-size: 0.61rem;
  font-style: normal;
  letter-spacing: 0.09em;
}

.stability-rail {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 15px;
  padding-top: 14px;
  border-top: 2px solid var(--blue);
  color: #aebbc7;
  font: 800 0.62rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.1em;
}

.stability-rail b {
  color: var(--green);
}

.decision-grid {
  display: grid;
  gap: 12px;
  margin: 28px 0;
}

.decision {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-left-width: 4px;
  border-radius: 13px;
  background: rgba(8, 16, 24, 0.76);
}

.decision b {
  font: 900 0.75rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.14em;
}

.decision p {
  margin: 9px 0 0;
}

.decision--go { border-left-color: var(--green); }
.decision--hold { border-left-color: var(--amber); }
.decision--stop { border-left-color: var(--red); }
.decision--go b { color: var(--green); }
.decision--hold b { color: var(--amber); }
.decision--stop b { color: var(--red); }

.checklist {
  display: grid;
  gap: 10px;
  padding: 0 !important;
  list-style: none;
}

.checklist li {
  position: relative;
  margin: 0 !important;
  padding: 13px 15px 13px 44px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(8, 16, 24, 0.62);
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 16px;
  color: var(--green);
  font-weight: 900;
}

.power-card-mini {
  display: grid;
  align-content: center;
  gap: 10px;
  min-height: 430px;
  padding: clamp(28px, 5vw, 52px);
  background:
    linear-gradient(rgba(69, 174, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(69, 174, 255, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 20% 8%, rgba(69, 174, 255, 0.17), transparent 18rem),
    #071019;
  background-size: 28px 28px, 28px 28px, auto, auto;
}

.power-card-mini__request,
.power-card-mini strong {
  padding: 11px 13px;
  border: 1px solid rgba(245, 200, 111, 0.23);
  border-radius: 9px;
  color: var(--amber);
  background: rgba(93, 67, 20, 0.1);
  font: 800 0.65rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.1em;
}

.power-card-mini div {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px 13px;
  border: 1px solid rgba(151, 194, 226, 0.15);
  border-radius: 10px;
  background: rgba(5, 10, 16, 0.76);
  font: 700 0.68rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.05em;
}

.power-card-mini div b { color: var(--blue-soft); }
.power-card-mini div em { color: var(--green); font-size: 0.56rem; font-style: normal; }
.power-card-mini strong { border-color: rgba(102, 214, 163, 0.25); color: var(--green); }

@media (max-width: 900px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .hero-grid,
  .article-card {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 48px;
  }

  .hero-visual {
    max-width: 680px;
  }

  .article-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .toc {
    position: static;
    margin-bottom: 44px;
  }

  .article-card img {
    min-height: 280px;
  }
}

@media (max-width: 600px) {
  .shell {
    width: min(calc(100% - 28px), var(--max));
  }

  .nav {
    min-height: 66px;
  }

  .brand img {
    width: 118px;
  }

  .brand-tag {
    display: none;
  }

  .nav-links .nav-cta {
    padding: 9px 11px;
    font-size: 0.68rem;
  }

  h1 {
    font-size: clamp(2.7rem, 15vw, 4.4rem);
  }

  .hero-grid {
    gap: 34px;
  }

  .hero-caption,
  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }

  .article {
    font-size: 1rem;
  }

  .article h2 {
    margin-top: 58px;
  }

  .cta-panel {
    margin: 54px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}