*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background: var(--color-paper);
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-ink);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

ul[class],
ol[class] {
  list-style: none;
}

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

table {
  border-collapse: collapse;
  width: 100%;
}

main {
  min-height: 50vh;
}

#main-content:focus {
  outline: none;
}

:root {
  --color-primary: #1B5E20;
  --color-gold: #FFD700;
  --color-paper: #F5F0E6;
  --color-ink: #1A1A1A;
  --color-white: #FFFFFF;
  --color-data: #4CAF50;
  --color-hot: #FF6F00;
  --color-line: #D7CCC8;

  --font-headline: Impact, "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "Roboto Mono", "Courier New", monospace;

  --container: 1440px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius: 14px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shadow-1: 0 10px 30px rgba(26, 26, 26, 0.1);
  --shadow-2: 0 24px 48px rgba(26, 26, 26, 0.18);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-headline);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--color-ink);
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
}

h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin-block: 0.6em 0;
}

a {
  color: var(--color-primary);
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--color-hot);
}

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

:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 0.6em 1.2em;
  background: var(--color-ink);
  color: var(--color-gold);
  border-radius: 999px;
  font-weight: 700;
  transform: translateY(-300%);
  transition: transform 0.25s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  color: var(--color-gold);
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 42px;
  padding: 0.55em 1.4em;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  transition: background 0.22s var(--ease), color 0.22s var(--ease), transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.btn::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 10px;
  background: currentColor;
  clip-path: polygon(0 0, 100% 0, calc(100% - 4px) 100%, 4px 100%);
  opacity: 0.85;
}

.btn:hover {
  background: var(--color-gold);
  color: var(--color-ink);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(255, 215, 0, 0.35);
}

.btn:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
}

.btn--header {
  min-height: 38px;
  padding: 0.45em 1.2em;
  font-size: 0.875rem;
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: none;
}

.btn--block {
  display: flex;
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.25em 0.8em;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
  background: var(--color-hot);
  color: var(--color-white);
}

.badge--gold {
  background: var(--color-gold);
  color: var(--color-ink);
}

.badge--green {
  background: var(--color-primary);
  color: var(--color-white);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-block: 1rem 0;
  font-size: 0.875rem;
  color: rgba(26, 26, 26, 0.66);
}

.breadcrumb__link {
  color: var(--color-primary);
  font-weight: 500;
}

.breadcrumb__link:hover {
  color: var(--color-hot);
}

.breadcrumb__sep {
  color: rgba(26, 26, 26, 0.34);
  font-family: var(--font-num);
}

.breadcrumb__current {
  color: var(--color-ink);
  font-weight: 700;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  padding: 14px var(--gutter);
  background: transparent;
  transition: padding 0.3s var(--ease);
}

.site-header__progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  pointer-events: none;
  background: rgba(27, 94, 32, 0.14);
}

.site-header__progress-bar {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-primary));
}

.site-header__island {
  position: relative;
  display: flex;
  align-items: center;
  max-width: var(--container);
  margin-inline: auto;
  padding: 8px 10px;
  border: 1px solid rgba(215, 204, 200, 0.9);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-1);
  transition: padding 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-header[data-scrolled] {
  padding-block: 8px;
}

.site-header[data-scrolled] .site-header__island {
  padding-block: 5px;
  box-shadow: var(--shadow-2);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  flex: 0 0 auto;
  color: var(--color-ink);
}

.site-brand:hover {
  color: var(--color-ink);
}

.site-brand__mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-headline);
  font-size: 1.1rem;
  font-style: italic;
  letter-spacing: 0.02em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.site-brand__mark::after {
  content: "";
  position: absolute;
  top: 7px;
  right: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.7);
  animation: pulse-dot 2.4s var(--ease) infinite;
}

@keyframes pulse-dot {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.6);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(255, 215, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 215, 0, 0);
  }
}

.site-brand__name {
  display: inline-flex;
  align-items: baseline;
  gap: 0.3em;
  font-family: var(--font-headline);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1;
}

.site-brand__name em {
  display: inline-block;
  font-style: normal;
  padding: 0.14em 0.5em;
  background: var(--color-gold);
  color: var(--color-ink);
  border-radius: 999px;
  font-size: 0.58em;
  letter-spacing: 0.12em;
  font-weight: 900;
  transform: translateY(-2px) rotate(2deg);
}

.site-nav {
  margin-inline: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.6em 1em;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-ink);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 20%;
  height: 3px;
  border-radius: 3px;
  background: var(--color-gold);
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 0.25s var(--ease), width 0.25s var(--ease);
}

.site-nav__link:hover {
  background: rgba(27, 94, 32, 0.08);
  color: var(--color-primary);
}

.site-nav__link:hover::after {
  transform: translateX(-50%) scaleX(1);
  width: 40%;
}

.site-nav__link[aria-current="page"] {
  color: var(--color-primary);
}

.site-nav__link[aria-current="page"]::after {
  transform: translateX(-50%) scaleX(1);
  width: 60%;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: var(--color-primary);
  color: var(--color-white);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle:hover {
  background: var(--color-gold);
  color: var(--color-ink);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header[data-scrolled] .site-nav {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  right: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  pointer-events: none;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 20px;
  box-shadow: var(--shadow-2);
  padding: 10px;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
}

.site-header[data-scrolled] .site-nav[data-open] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.site-header[data-scrolled] .site-nav__list {
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
}

.site-header[data-scrolled] .site-nav__link {
  padding: 0.85em 1.1em;
  font-size: 1rem;
  border-radius: 12px;
}

.site-header[data-scrolled] .site-nav__link::after {
  display: none;
}

.site-header[data-scrolled] .btn--header {
  display: none;
}

.site-header[data-scrolled] .nav-toggle {
  display: inline-flex;
}

.site-header[data-scrolled] .site-header__actions {
  margin-left: auto;
}

.site-footer {
  position: relative;
  background: var(--color-ink);
  color: rgba(245, 240, 230, 0.78);
  margin-top: clamp(4rem, 10vw, 8rem);
}

.site-footer::before {
  content: "";
  display: block;
  height: 5px;
  background: repeating-linear-gradient(90deg, var(--color-gold) 0 10px, var(--color-primary) 10px 18px, rgba(255, 255, 255, 0.16) 18px 30px);
}

.site-footer a {
  color: rgba(245, 240, 230, 0.78);
  transition: color 0.2s var(--ease);
}

.site-footer a:hover {
  color: var(--color-gold);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1.6fr;
  gap: clamp(24px, 4vw, 56px);
  max-width: var(--container);
  margin-inline: auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) var(--gutter) 2rem;
}

.site-footer__brand .site-brand {
  color: var(--color-paper);
}

.site-footer__brand .site-brand:hover {
  color: var(--color-paper);
}

.site-brand--footer .site-brand__mark {
  width: 44px;
  height: 44px;
}

.site-brand--footer .site-brand__name {
  font-size: 1.4rem;
  color: var(--color-paper);
}

.site-footer__slogan {
  margin-top: 0.8rem;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  font-weight: 500;
  color: var(--color-gold);
}

.site-footer h4 {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-paper);
  margin-bottom: 1rem;
}

.site-footer h4::before {
  content: "/ ";
  color: var(--color-gold);
}

.site-footer__nav ul,
.site-footer__docs ul,
.site-footer__contact-list,
.site-footer__bar-links {
  list-style: none;
}

.site-footer__nav ul,
.site-footer__docs ul {
  display: grid;
  gap: 0.55rem;
}

.site-footer__nav a,
.site-footer__docs a {
  display: inline-block;
  padding-block: 0.1em;
  border-bottom: 1px solid transparent;
}

.site-footer__nav a:hover,
.site-footer__docs a:hover {
  border-bottom-color: var(--color-gold);
}

.site-footer__contact-list {
  display: grid;
  gap: 0.55rem;
}

.site-footer__contact-list li {
  position: relative;
  padding-left: 1.1em;
  font-size: 0.92rem;
  line-height: 1.6;
}

.site-footer__contact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--color-gold);
  transform: rotate(45deg);
}

.site-footer__mono {
  font-family: var(--font-num);
  color: var(--color-paper);
  font-size: 0.9em;
}

.site-footer__info {
  max-width: var(--container);
  margin-inline: auto;
  padding: 0 var(--gutter) 1.8rem;
}

.site-footer__trust {
  max-width: 760px;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--color-gold);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(245, 240, 230, 0.62);
  clip-path: polygon(0 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
}

.site-footer__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.6rem;
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.2rem var(--gutter) 1.4rem;
  border-top: 1px solid rgba(215, 204, 200, 0.16);
  font-size: 0.82rem;
  color: rgba(245, 240, 230, 0.5);
}

.site-footer__copy {
  display: inline-flex;
  gap: 0.3rem;
}

.site-footer__copy [data-year] {
  display: inline-block;
  min-width: 4ch;
  font-family: var(--font-num);
  color: var(--color-gold);
}

.site-footer__icp {
  font-family: var(--font-num);
}

.site-footer__bar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-left: auto;
}

.site-footer__bar-links a {
  color: rgba(245, 240, 230, 0.66);
}

.site-footer__bar-links a:hover {
  color: var(--color-gold);
}

.container {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
}

.section {
  padding-block: clamp(3rem, 7vw, 6rem);
}

.section--tight {
  padding-block: clamp(2rem, 4vw, 3.5rem);
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.chapter {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(14px, 2vw, 28px);
  align-items: start;
}

.chapter__num {
  font-family: var(--font-headline);
  font-size: clamp(3rem, 6vw, 4.5rem);
  line-height: 1;
  color: var(--color-primary);
}

.chapter__num::after {
  content: "/";
  color: var(--color-gold);
  font-size: 0.7em;
  vertical-align: top;
  margin-left: 0.08em;
}

.chapter__content {
  display: grid;
  gap: 0.8rem;
}

.chapter__title {
  position: relative;
  display: inline-block;
  font-family: var(--font-headline);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  text-transform: uppercase;
}

.chapter__title::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin-top: 0.3rem;
  background: linear-gradient(90deg, var(--color-gold), var(--color-primary));
}

.chapter__note {
  writing-mode: vertical-rl;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: rgba(26, 26, 26, 0.5);
  text-transform: uppercase;
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: 0 2px 0 rgba(26, 26, 26, 0.04);
  padding: clamp(20px, 3vw, 32px);
}

.card--cut {
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.card__body {
  color: rgba(26, 26, 26, 0.82);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--color-gold);
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: 0.8em 1em;
  text-align: left;
  border-bottom: 1px solid var(--color-line);
}

.data-table th {
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  font-weight: 700;
}

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

.data-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
}

.data-table .is-top {
  color: var(--color-hot);
  font-weight: 700;
}

.media {
  position: relative;
  overflow: hidden;
  background: var(--color-ink);
  border-radius: var(--radius);
}

.media__frame {
  position: relative;
  padding-top: 56.25%;
}

.media__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.media__placeholder::before {
  content: "3Y";
  font-family: var(--font-headline);
  font-size: 2.6rem;
  color: rgba(255, 215, 0, 0.8);
}

.media--sport::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(255, 215, 0, 0.14) 0 2px, transparent 2px 14px);
  pointer-events: none;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1023.98px) {
  .site-header {
    padding: 10px var(--gutter);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header__actions {
    margin-left: auto;
  }

  .btn--header {
    display: none;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    margin-inline: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    background: var(--color-white);
    border: 1px solid var(--color-line);
    border-radius: 20px;
    box-shadow: var(--shadow-2);
    padding: 10px;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__link {
    padding: 0.85em 1.1em;
    font-size: 1rem;
    border-radius: 12px;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link[aria-current="page"],
  .site-nav__link:hover {
    background: rgba(27, 94, 32, 0.08);
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__top {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__contact {
    grid-column: 1 / -1;
  }
}

@media (max-width: 639.98px) {
  .site-header {
    padding-inline: 12px;
  }

  .site-header__island {
    padding: 6px 8px;
  }

  .site-brand__mark {
    width: 36px;
    height: 36px;
    font-size: 0.95rem;
  }

  .site-brand__name {
    font-size: 1.05rem;
  }

  .site-nav {
    top: calc(100% + 10px);
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .site-footer__contact {
    grid-column: auto;
  }

  .site-footer__bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .site-footer__bar-links {
    margin-left: 0;
  }

  .site-footer__trust {
    clip-path: none;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .site-brand__mark::after {
    animation: none;
  }
}