:root {
  --ink: #0c1211;
  --ink-2: #131c1a;
  --paper: #f0eee7;
  --paper-soft: #d6d2c7;
  --muted: rgb(240 238 231 / 55%);
  --line: rgb(240 238 231 / 14%);
  --accent: #ff6b3d;
  --accent-soft: #ff956d;
  --pine: #203a34;
  --max-width: 1240px;
  --pad: clamp(20px, 4vw, 64px);
  --display: "Bahnschrift", "Microsoft YaHei UI", "PingFang SC", sans-serif;
  --body: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  color-scheme: dark;
  background: var(--ink);
  scrollbar-color: var(--accent) var(--ink);
  scrollbar-width: thin;
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 82% 8%, rgb(255 107 61 / 8%), transparent 32rem),
    linear-gradient(180deg, #0b1110 0%, var(--ink) 48%, #080d0c 100%);
  font-family: var(--body);
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { color: var(--ink); background: var(--accent); }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }

.license-header {
  position: sticky;
  top: 14px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(calc(100% - 28px), 1180px);
  min-height: 64px;
  margin: 14px auto 0;
  padding: 8px 10px 8px 14px;
  border: 1px solid rgb(240 238 231 / 10%);
  border-radius: 999px;
  background: rgb(9 14 13 / 82%);
  box-shadow: 0 18px 55px rgb(0 0 0 / 30%);
  backdrop-filter: blur(20px);
}

.license-brand,
.license-footer > div {
  display: flex;
  align-items: center;
  gap: 11px;
}

.license-brand__mark {
  display: grid;
  width: 38px;
  height: 38px;
  grid-template-columns: 1fr 1fr;
  place-items: center;
  border: 1px solid rgb(240 238 231 / 12%);
  border-radius: 50%;
  color: var(--paper);
  background: var(--pine);
  font-family: var(--display);
  font-size: 0.66rem;
  font-style: normal;
  line-height: 1;
}

.license-brand strong,
.license-footer strong {
  display: block;
  font-family: var(--display);
  font-size: 0.88rem;
}

.license-brand small {
  display: block;
  margin-top: 1px;
  color: var(--muted);
  font-family: var(--display);
  font-size: 0.48rem;
  letter-spacing: 0.14em;
}

.license-header nav,
.license-footer nav {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.license-header nav a,
.license-footer nav a {
  flex: 0 0 auto;
  padding: 8px 10px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 700;
}

.license-header nav a:hover,
.license-footer nav a:hover {
  color: var(--paper);
  background: rgb(240 238 231 / 6%);
}

main {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: clamp(68px, 9vw, 120px) 0 90px;
}

.license-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  gap: 32px;
  align-items: end;
  min-height: 440px;
  padding: clamp(30px, 5vw, 64px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgb(255 255 255 / 5%), transparent 46%),
    linear-gradient(180deg, rgb(255 255 255 / 3%), rgb(9 14 13 / 45%));
}

.license-hero::before {
  content: "LICENSE";
  position: absolute;
  right: -0.04em;
  bottom: -0.22em;
  color: transparent;
  font-family: "Iowan Old Style", "Baskerville", Georgia, serif;
  font-size: clamp(8rem, 22vw, 19rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.08em;
  opacity: 0.07;
  -webkit-text-stroke: 1px var(--paper);
  pointer-events: none;
}

.license-hero__index {
  position: absolute;
  top: 30px;
  right: 34px;
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-family: var(--display);
  font-size: 0.56rem;
  letter-spacing: 0.15em;
}

.license-hero__copy {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.license-kicker,
.license-section__eyebrow {
  margin: 0 0 12px;
  color: var(--accent-soft);
  font-family: var(--display);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.license-hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.3rem, 8vw, 7.6rem);
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.045em;
}

.license-hero h1 em {
  color: var(--accent);
  font-style: normal;
}

.license-hero p {
  max-width: 68ch;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.license-hero p a {
  color: var(--paper);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.license-seal {
  position: relative;
  z-index: 2;
  display: grid;
  width: 176px;
  aspect-ratio: 1;
  align-content: center;
  justify-items: center;
  border: 1px solid rgb(255 107 61 / 45%);
  border-radius: 50%;
  color: var(--accent);
  background: rgb(255 107 61 / 4%);
  transform: rotate(-7deg);
}

.license-seal span { font-size: 1.8rem; }
.license-seal strong { font-family: var(--display); font-size: 1.3rem; letter-spacing: 0.08em; }
.license-seal small { color: var(--muted); font-size: 0.5rem; letter-spacing: 0.15em; }

.license-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.license-summary article {
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgb(255 255 255 / 2.5%);
}

.license-summary span {
  color: var(--accent-soft);
  font-family: var(--display);
  font-size: 0.52rem;
  letter-spacing: 0.15em;
}

.license-summary strong {
  display: block;
  margin-top: 28px;
  font-size: 1rem;
}

.license-summary p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
}

.license-content {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 54px;
  margin-top: 84px;
}

.license-toc {
  position: sticky;
  top: 102px;
  align-self: start;
  display: grid;
  gap: 4px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgb(255 255 255 / 2%);
}

.license-toc > span {
  margin-bottom: 8px;
  color: var(--muted);
  font-family: var(--display);
  font-size: 0.55rem;
  letter-spacing: 0.15em;
}

.license-toc a {
  padding: 8px 9px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 0.66rem;
}

.license-toc a:hover {
  color: var(--paper);
  background: rgb(240 238 231 / 5%);
}

.license-document {
  min-width: 0;
}

.license-document > section {
  position: relative;
  padding: 0 0 64px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 64px;
}

.license-section__number {
  position: absolute;
  top: 0;
  right: 0;
  color: rgb(240 238 231 / 10%);
  font-family: var(--display);
  font-size: 3.8rem;
  font-weight: 700;
}

.license-document h2 {
  margin: 0 0 20px;
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.license-document h3 {
  margin: 0 0 8px;
  font-size: 0.92rem;
}

.license-document p,
.license-document li {
  max-width: 72ch;
  color: var(--muted);
  font-size: 0.82rem;
}

.license-document strong { color: var(--paper); }

.license-document ul,
.license-prohibited {
  display: grid;
  gap: 9px;
  padding-left: 1.2rem;
  margin: 20px 0;
}

.license-rule-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.license-rule-grid article {
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgb(255 255 255 / 2%);
}

.license-rule-grid article > span {
  color: var(--accent);
  font-family: var(--display);
  font-size: 0.6rem;
}

.license-rule-grid p { margin: 0; }

.license-prohibited li::marker { color: var(--accent); }

.license-contact {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 24px 0 0;
}

.license-contact div {
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgb(255 255 255 / 2%);
}

.license-contact dt {
  color: var(--muted);
  font-size: 0.6rem;
}

.license-contact dd {
  margin: 5px 0 0;
  font-size: 0.8rem;
  overflow-wrap: anywhere;
}

.license-contact a { color: var(--accent-soft); }

.license-production-link {
  margin-top: 18px;
}

.license-production-link a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: 0 15px;
  border: 1px solid rgb(255 107 61 / 28%);
  border-radius: 12px;
  color: var(--paper);
  background: rgb(255 107 61 / 7%);
  font-size: 0.72rem;
  font-weight: 700;
}

.license-final {
  padding: 24px;
  border: 1px solid rgb(255 107 61 / 22%);
  border-radius: 18px;
  color: var(--paper) !important;
  background: rgb(255 107 61 / 6%);
  font-weight: 700;
}

.license-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.62rem;
}

@media (max-width: 900px) {
  .license-hero { grid-template-columns: 1fr; }
  .license-seal { display: none; }
  .license-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .license-content { grid-template-columns: 1fr; gap: 28px; }
  .license-toc { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .license-toc > span { grid-column: 1 / -1; }
  .license-rule-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .license-header { align-items: flex-start; flex-direction: column; border-radius: 20px; }
  .license-header nav { width: 100%; padding-bottom: 2px; }
  main { padding-top: 44px; }
  .license-hero { min-height: 0; padding: 27px 20px 34px; border-radius: 24px; }
  .license-hero__index { position: static; margin-bottom: 24px; }
  .license-hero h1 { font-size: clamp(3rem, 16vw, 5.2rem); }
  .license-summary,
  .license-contact { grid-template-columns: 1fr; }
  .license-content { margin-top: 58px; }
  .license-toc { grid-template-columns: 1fr; }
  .license-document > section { padding-bottom: 48px; margin-bottom: 48px; }
  .license-section__number { font-size: 2.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}