@font-face {
  font-family: "Noto Sans SC Local";
  src: url("/assets/fonts/NotoSansSC-Regular.otf") format("opentype");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --ink: #eef2f7;
  --muted: #a5afbd;
  --line: rgba(255, 255, 255, 0.12);
  --panel: rgba(17, 24, 39, 0.78);
  --panel-strong: #111827;
  --red: #ff6b5f;
  --amber: #f3bd58;
  --green: #6ed9ae;
  --blue: #77aef7;
  --page: #070b12;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% -5%, rgba(119, 174, 247, 0.16), transparent 34rem),
    radial-gradient(circle at 92% 12%, rgba(243, 189, 88, 0.09), transparent 32rem),
    var(--page);
  font-family: "Noto Sans SC Local", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 22px;
  line-height: 1.78;
}

a { color: #9ec5ff; text-underline-offset: 0.18em; }
a:hover { color: #fff; }

.skip-link {
  position: fixed;
  top: -4rem;
  left: 1rem;
  z-index: 100;
  background: #fff;
  color: #000;
  padding: 0.5rem 0.8rem;
}
.skip-link:focus { top: 1rem; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
  padding: 0.75rem max(1rem, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(7, 11, 18, 0.9);
  backdrop-filter: blur(16px);
}

.topbar a { text-decoration: none; }
.brand { color: #fff; font-weight: 800; letter-spacing: -0.02em; }
.topbar nav { display: flex; gap: 1rem; font-size: 15px; }

.page-shell { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; }

.hero { padding: 5.5rem 0 3rem; }
.kicker {
  color: var(--amber);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 950px;
  margin: 0.35rem 0 1rem;
  font-family: "Noto Sans SC Local", "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(50px, 8vw, 96px);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.lead { max-width: 890px; color: #cbd3df; font-size: 25px; line-height: 1.65; }

.phase-card {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 0.2rem 1.1rem;
  max-width: 900px;
  margin-top: 2rem;
  padding: 1.3rem 1.5rem;
  border: 1px solid rgba(110, 217, 174, 0.35);
  border-left: 6px solid var(--green);
  background: rgba(110, 217, 174, 0.07);
}
.phase-card span { color: var(--muted); font-size: 15px; }
.phase-card strong { color: var(--green); font-size: 30px; }
.phase-card p { grid-column: 2; margin: 0; color: #cdd6df; }

.top-three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 2rem;
  border: 1px solid var(--line);
  background: var(--line);
}
.top-three article { padding: 1.25rem; background: var(--panel-strong); }
.top-three span { color: var(--muted); font-size: 14px; }
.top-three strong { display: block; color: var(--amber); font-size: 39px; line-height: 1.2; }
.top-three p { margin: 0.35rem 0 0; font-size: 18px; line-height: 1.55; }
.probability-note { max-width: 920px; color: var(--muted); font-size: 16px; }

.guardrail {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1rem;
  margin: 0 0 2rem;
  padding: 1.2rem 1.5rem;
  border: 1px solid rgba(255, 107, 95, 0.35);
  background: rgba(255, 107, 95, 0.07);
}
.guardrail strong { color: var(--red); }
.guardrail p { margin: 0; }

.toc {
  display: flex;
  gap: 0.65rem;
  overflow-x: auto;
  padding: 0.8rem 0 1.25rem;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}
.toc a {
  flex: 0 0 auto;
  padding: 0.38rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #cdd6df;
  font-size: 14px;
  text-decoration: none;
}
.toc a:hover { border-color: var(--blue); }

.report { width: min(920px, 100%); margin: 0 auto; }
.report-section { padding: 4rem 0 1rem; scroll-margin-top: 5rem; }
.section-index { margin: 0; color: var(--amber); font-size: 15px; font-weight: 800; letter-spacing: 0.14em; }
.report h2 {
  margin: 0.25rem 0 1.6rem;
  font-family: "Noto Sans SC Local", "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.25;
  letter-spacing: -0.035em;
}
.report h3 {
  margin: 2.7rem 0 0.9rem;
  padding-left: 1rem;
  border-left: 4px solid var(--blue);
  font-size: 27px;
  line-height: 1.4;
}
.report h3.action-heading {
  margin-top: 4rem;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(243, 189, 88, 0.3);
  border-left: 6px solid var(--amber);
  background: rgba(243, 189, 88, 0.06);
}
.report p { margin: 0.8rem 0; }
.report strong { color: #fff; }
.emphasis-line { color: var(--amber); }

blockquote {
  margin: 1.5rem 0;
  padding: 1.1rem 1.3rem;
  border-left: 5px solid var(--green);
  background: rgba(110, 217, 174, 0.07);
  color: #e7fff5;
}

.bullet-list, .number-list { margin: 0.8rem 0 1.2rem; padding-left: 1.5rem; }
.bullet-list li, .number-list li { margin: 0.45rem 0; padding-left: 0.35rem; }
.bullet-list li::marker { color: var(--amber); }
.number-list li::marker { color: var(--blue); font-weight: 800; }

.table-wrap {
  width: 100%;
  margin: 1.4rem 0 2rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(17, 24, 39, 0.7);
}
table { width: 100%; min-width: 760px; border-collapse: collapse; font-size: 17px; line-height: 1.55; }
th, td { padding: 0.8rem 0.9rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { position: sticky; top: 0; color: var(--amber); background: #151e2d; }
tr:last-child td { border-bottom: 0; }
td:last-child, th:last-child { border-right: 0; }

.conclusion {
  margin-top: 3rem;
  padding: 2.2rem clamp(1rem, 4vw, 2.5rem);
  border: 1px solid rgba(110, 217, 174, 0.35);
  background: linear-gradient(145deg, rgba(110, 217, 174, 0.09), rgba(119, 174, 247, 0.06));
}

.download-panel {
  width: min(920px, 100%);
  margin: 4rem auto;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
}
.download-panel h2 { margin: 0.2rem 0 1rem; font-size: 30px; }
.download-panel a { display: inline-block; padding: 0.7rem 1rem; border: 1px solid var(--blue); text-decoration: none; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  body { font-size: 22px; line-height: 1.72; }
  .topbar { align-items: flex-start; }
  .topbar nav { display: none; }
  .page-shell { width: min(100% - 1.25rem, 1180px); }
  .hero { padding: 3.2rem 0 2rem; }
  .hero h1 { font-size: clamp(46px, 14vw, 67px); }
  .lead { font-size: 22px; }
  .phase-card { grid-template-columns: 1fr; padding: 1rem; }
  .phase-card p { grid-column: 1; }
  .top-three { grid-template-columns: 1fr; }
  .guardrail { grid-template-columns: 1fr; padding: 1rem; }
  .report-section { padding-top: 3.3rem; }
  .report h2 { font-size: 36px; }
  .report h3 { font-size: 26px; }
  .report h3.action-heading { margin-top: 3.2rem; }
  .table-wrap { margin-left: 0; margin-right: 0; }
  footer { flex-direction: column; }
}

@media print {
  :root { color-scheme: light; }
  body { color: #111; background: #fff; font-size: 15px; }
  .topbar, .toc, .download-panel { display: none; }
  .page-shell, .report { width: 100%; }
  .hero { padding: 0 0 1rem; }
  .hero h1 { font-size: 38px; }
  .phase-card, .top-three article, .guardrail, .conclusion, .table-wrap { color: #111; background: #fff; border-color: #999; }
  .report-section { padding: 1.5rem 0 0; break-inside: auto; }
  .report h2, .report h3, table tr { break-after: avoid; break-inside: avoid; }
  table { font-size: 11px; }
  a { color: #111; text-decoration: none; }
}