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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

:root {
  --pitch-green: #1B4D3E;
  --vital-orange: #F5A623;
  --wine-red: #8B1A4A;
  --royal-purple: #4B0082;
  --ink-black: #111111;
  --paper-white: #F7F7F5;
  --line-gray: #D1D1D1;
  --text-gray: #6B6B6B;
  --success-green: #2E8B57;
  --data-blue: #1E90FF;
  --font-heading: "Archivo Black", "Arial Black", "Microsoft YaHei", "PingFang SC", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --radius-pill: 999px;
  --shadow-header: 0 12px 32px rgba(0, 0, 0, 0.18);
}

html:focus-within {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper-white);
  color: var(--ink-black);
  font-family: var(--font-body);
  line-height: 1.6;
  padding-top: clamp(76px, 10vw, 108px);
}

h1, h2, h3, p, ul, ol, figure, blockquote, address {
  margin: 0;
  padding: 0;
}

ul, ol {
  list-style-position: inside;
}

img {
  max-width: 100%;
  display: block;
}

button {
  font: inherit;
  cursor: pointer;
}

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

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

.main-content {
  min-height: 70vh;
}

.container {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 2000;
  padding: 0.7rem 1.2rem;
  background: var(--vital-orange);
  color: var(--ink-black);
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 16px;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: var(--vital-orange);
  z-index: 3000;
  pointer-events: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 14px clamp(16px, 4vw, 40px) 0;
  pointer-events: none;
}

.header-float {
  pointer-events: auto;
  max-width: 1120px;
  margin-inline: auto;
  background: rgba(27, 77, 62, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 52px;
  box-shadow: var(--shadow-header);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.header-float-inner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.6rem 0.5rem 0.8rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-right: 0.5rem;
  text-decoration: none;
  color: #fff;
  flex: 0 0 auto;
}

.brand-gram {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--vital-orange);
  color: var(--ink-black);
  border-radius: 50%;
  font-family: var(--font-heading);
  font-size: 1rem;
  line-height: 1;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.brand-slogan {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.65);
}

.primary-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  gap: 0.15rem;
  list-style: none;
}

.nav-list a {
  display: inline-block;
  padding: 0.5rem 0.78rem;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 550;
  white-space: nowrap;
}

.nav-list a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.nav-list a[aria-current="page"] {
  background: var(--vital-orange);
  color: var(--ink-black);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-pill);
  color: #fff;
  padding: 0.45rem 0.8rem;
  font-size: 0.8rem;
  margin-left: auto;
}

.nav-toggle-icon {
  width: 16px;
  height: 2px;
  background: currentColor;
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s, top 0.2s;
}

.nav-toggle-icon::before {
  top: -5px;
}

.nav-toggle-icon::after {
  top: 5px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

@media (max-width: 920px) {
  body {
    padding-top: 82px;
  }

  .header-float {
    border-radius: 22px;
  }

  .header-float-inner {
    flex-wrap: wrap;
  }

  .brand-slogan {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    order: 2;
  }

  .primary-nav {
    flex-basis: 100%;
    margin-left: 0;
    order: 3;
    display: none;
  }

  .primary-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    padding: 0.25rem 0.5rem 0.5rem;
  }

  .nav-list a {
    display: block;
    width: 100%;
    border-radius: 10px;
  }
}

.site-footer {
  position: relative;
  background: var(--pitch-green);
  color: rgba(255, 255, 255, 0.85);
  margin-top: clamp(3rem, 7vw, 6rem);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--vital-orange);
}

.footer-kicker {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1rem 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vital-orange);
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  max-width: 1280px;
  margin-inline: auto;
  padding: clamp(2rem, 5vw, 4rem) clamp(1.25rem, 5vw, 3rem);
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: #fff;
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 1.2rem;
}

.footer-logo .brand-gram {
  width: 34px;
  height: 34px;
  font-size: 0.9rem;
}

.footer-phrase {
  margin-top: 1rem;
  max-width: 40rem;
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-address {
  margin-top: 1.5rem;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1rem;
}

.footer-nav ul,
.footer-legal ul {
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.footer-nav a,
.footer-legal a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-nav a:hover,
.footer-legal a:hover {
  color: var(--vital-orange);
}

.footer-cert {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.55);
}

@media (max-width: 800px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.back-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1200;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 50%;
  background: var(--vital-orange);
  color: var(--ink-black);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  background: #ffb84d;
}

.page-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1rem, 4vw, 3rem);
  margin-block: clamp(2rem, 5vw, 5rem);
}

.page-kicker {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vital-orange);
}

.page-title {
  grid-column: 1;
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  line-height: 1.02;
  margin-top: 0.2rem;
  text-wrap: balance;
}

.page-intro {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  border-left: 2px solid var(--vital-orange);
  padding-left: 1.6rem;
  font-size: 0.95rem;
  color: var(--text-gray);
  line-height: 1.8;
}

@media (max-width: 800px) {
  .page-header {
    grid-template-columns: 1fr;
  }

  .page-intro {
    grid-column: auto;
    grid-row: auto;
    border-left: none;
    border-top: 2px solid var(--vital-orange);
    padding-left: 0;
    padding-top: 0.8rem;
    margin-top: 0.5rem;
  }
}

.section {
  display: grid;
  grid-template-columns: minmax(0, 0.65fr) minmax(0, 2.35fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  margin-bottom: clamp(3rem, 8vw, 6rem);
}

.section-number {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--vital-orange);
  letter-spacing: 0.1em;
}

.section-title {
  grid-column: 1;
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.1;
  margin-top: 0.2rem;
}

.section-content {
  grid-column: 2;
  min-width: 0;
}

@media (max-width: 800px) {
  .section {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .section-number,
  .section-title,
  .section-content {
    grid-column: 1;
  }
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.6fr);
  gap: clamp(1.5rem, 5vw, 4rem);
}

.aside-note {
  font-size: 0.875rem;
  color: var(--text-gray);
  line-height: 1.7;
  border-left: 2px solid var(--vital-orange);
  padding-left: 1.2rem;
}

.content-main {
  min-width: 0;
}

@media (max-width: 760px) {
  .split-layout {
    grid-template-columns: 1fr;
  }

  .aside-note {
    border-left: none;
    border-top: 2px solid var(--vital-orange);
    padding-left: 0;
    padding-top: 0.75rem;
  }
}

.data-card {
  background: #fff;
  border: 1px solid var(--line-gray);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
  padding: clamp(1rem, 3vw, 2rem);
  box-shadow: 0 1px 0 #fff inset;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.55rem;
  background: var(--pitch-green);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.tag--orange {
  background: var(--vital-orange);
  color: var(--ink-black);
}

.tag--wine {
  background: var(--wine-red);
  color: #fff;
}

.tag--purple {
  background: var(--royal-purple);
  color: #fff;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1;
  color: var(--pitch-green);
}

.path-line {
  display: inline-block;
  width: min(200px, 30vw);
  height: 2px;
  background: var(--vital-orange);
  transform: skewX(-45deg);
}

.table-wrap {
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--line-gray);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 600px;
}

.data-table th {
  background: var(--pitch-green);
  color: #fff;
  text-align: left;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.8rem 1rem;
}

.data-table td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line-gray);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.data-table tbody tr:hover {
  background: rgba(245, 166, 35, 0.1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border: 0;
  background: var(--pitch-green);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--vital-orange);
  color: var(--ink-black);
}

.btn-primary:hover {
  background: #ffb84d;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--line-gray);
  color: var(--ink-black);
}

.btn-ghost:hover {
  border-color: var(--pitch-green);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
  margin-bottom: 2rem;
  list-style: none;
}

.breadcrumbs a {
  color: var(--text-gray);
  text-decoration: none;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--line-gray);
}

.breadcrumbs [aria-current="page"] {
  color: var(--ink-black);
  font-weight: 600;
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--line-gray);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 77, 62, 0.25), transparent);
  pointer-events: none;
}

.media-caption {
  font-size: 0.75rem;
  color: var(--text-gray);
  margin-top: 0.5rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .back-top {
    transform: none;
  }
}