:root {
  --bg-color: #eef2f8;
  --surface: #ffffff;
  --surface-soft: #f6f8fc;
  --ink-color: #1f2328;
  --ink-light: #5d6878;
  --accent-color: #185abd;
  --accent-hover: #114793;
  --accent-soft: rgba(24, 90, 189, 0.12);
  --line: #d6ddeb;
  --line-strong: #c3cee4;
  --shadow-soft: 0 10px 28px rgba(15, 38, 80, 0.08);
  --shadow-card: 0 8px 24px rgba(15, 38, 80, 0.1);

  --font-sans: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  --font-serif: "Cambria", "Noto Serif SC", "Times New Roman", serif;
  --font-mono: "Cascadia Mono", "JetBrains Mono", "Consolas", monospace;

  --spacing-base: clamp(16px, 3.6vw, 24px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #111826;
    --surface: #1a2537;
    --surface-soft: #212d44;
    --ink-color: #edf2ff;
    --ink-light: #b6c3dd;
    --accent-color: #62a1ff;
    --accent-hover: #81b5ff;
    --accent-soft: rgba(98, 161, 255, 0.18);
    --line: #2d3a55;
    --line-strong: #3a4a6b;
    --shadow-soft: 0 12px 28px rgba(0, 0, 0, 0.35);
    --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.4);
  }
}

html {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at 88% -10%, var(--accent-soft), transparent 42%),
    linear-gradient(180deg, #f5f8fe 0%, var(--bg-color) 55%);
  color: var(--ink-color);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 60;
  background: linear-gradient(90deg, var(--accent-color), color-mix(in srgb, var(--accent-color) 65%, #8fb8ff));
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent-color) 42%, transparent);
  transition: width 0.15s linear;
}

.noise-layer,
.grid-overlay {
  pointer-events: none;
}

.noise-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.02;
  background-image: radial-gradient(rgba(28, 44, 80, 0.3) 0.4px, transparent 0.4px);
  background-size: 3px 3px;
}

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
}

.v-line,
.h-line {
  position: absolute;
  background-color: rgba(124, 143, 181, 0.14);
}

.v-line {
  top: 0;
  bottom: 0;
  width: 1px;
}

.h-line {
  left: 0;
  right: 0;
  height: 1px;
}

.serif-giant {
  font-family: var(--font-serif);
  font-size: clamp(2.45rem, 5.8vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.serif-h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3.6vw, 2.75rem);
  font-weight: 700;
  line-height: 1.16;
  margin-bottom: 8px;
}

.serif-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
}

.serif-text,
.serif-data {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.72;
  color: var(--ink-light);
}

.mono-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent-color);
  margin-bottom: 14px;
  text-transform: uppercase;
}

.mono-title {
  font-family: var(--font-sans);
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--ink-color);
}

.mono-desc {
  font-family: var(--font-sans);
  font-size: 0.98rem;
  color: var(--ink-light);
  line-height: 1.8;
  max-width: 620px;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-light);
  letter-spacing: 0.04em;
}

.mono-tiny {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.c-accent {
  color: var(--accent-color) !important;
}

.c-dim {
  color: var(--ink-light) !important;
}

.container {
  position: relative;
  z-index: 1;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 var(--spacing-base) 48px;
}

.border-top {
  border-top: 1px solid var(--line);
}

.border-right {
  border-right: 1px solid var(--line);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  margin: 0 -2px 44px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  border: 1px solid var(--line);
  border-radius: 0 0 14px 14px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
}

.topbar::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent-color) 18%, var(--line)), transparent);
}

.brand-block {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand {
  color: var(--ink-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid color-mix(in srgb, var(--accent-color) 30%, var(--line-strong));
  background: var(--surface-soft);
  box-shadow: 0 4px 10px color-mix(in srgb, var(--accent-color) 20%, transparent);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.brand:hover .brand-logo {
  transform: translateY(-1px) rotate(-2deg);
  box-shadow: 0 8px 16px color-mix(in srgb, var(--accent-color) 28%, transparent);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.topnav a {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-color);
  text-decoration: none;
}

.topnav a:hover {
  color: var(--accent-color);
}

.btn-accent {
  background: linear-gradient(180deg, #2a6ac9, var(--accent-color));
  color: #fff !important;
  padding: 9px 14px;
  border-radius: 9px;
  border: 1px solid color-mix(in srgb, var(--accent-color) 80%, black 20%);
  box-shadow: 0 4px 10px rgba(24, 90, 189, 0.32);
}

.btn-accent:hover {
  background: linear-gradient(180deg, #3778d8, var(--accent-hover));
}

.btn-lang {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-light);
  padding: 6px 10px;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-lang:hover {
  color: var(--accent-color);
  border-color: color-mix(in srgb, var(--accent-color) 65%, var(--line-strong));
}

.btn-solid,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: hidden;
}

.btn-solid {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
  box-shadow: 0 8px 16px rgba(24, 90, 189, 0.25);
}

.btn-solid:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-solid::after,
.btn-outline::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-120%);
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.26), transparent);
  transition: transform 0.75s ease;
}

.btn-solid:hover::after,
.btn-outline:hover::after {
  transform: translateX(120%);
}

.btn-outline {
  background: var(--surface);
  color: var(--ink-color);
}

.btn-outline:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  transform: translateY(-1px);
}

.block-btn {
  width: 100%;
  margin-top: 24px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 28px;
  margin-bottom: 70px;
  position: relative;
}

.hero-grid::before {
  content: "";
  position: absolute;
  width: clamp(180px, 28vw, 360px);
  aspect-ratio: 1;
  right: 22%;
  top: -70px;
  border-radius: 999px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent-color) 25%, transparent), transparent 66%);
  filter: blur(6px);
  pointer-events: none;
  animation: hero-orbit 7.2s ease-in-out infinite alternate;
}

@keyframes hero-orbit {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(8px, 14px, 0) scale(1.05);
  }
}

.hero-cell {
  padding: 34px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.cell-visual {
  position: relative;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  gap: 12px;
}

.competitive-points {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.competitive-point {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--ink-light);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-soft) 88%, transparent);
  border-radius: 999px;
  padding: 6px 10px;
  transition: color 0.28s ease, border-color 0.28s ease, background-color 0.28s ease, transform 0.28s ease;
}

.competitive-point.is-active {
  color: var(--accent-color);
  border-color: color-mix(in srgb, var(--accent-color) 42%, var(--line));
  background: color-mix(in srgb, var(--accent-color) 12%, var(--surface));
  transform: translateY(-1px);
}

.visual-blueprint {
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface-soft);
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.4s ease;
  box-shadow: 0 10px 28px color-mix(in srgb, var(--accent-color) 12%, transparent);
}

.visual-blueprint:hover {
  box-shadow: 0 20px 36px color-mix(in srgb, var(--accent-color) 18%, transparent);
}

.blueprint-head,
.blueprint-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 12px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--surface-soft) 70%, var(--surface)), var(--surface));
  border-bottom: 1px solid var(--line);
  color: var(--ink-light);
}

.blueprint-foot {
  border-top: 1px solid var(--line);
  border-bottom: none;
}

.badge-accent {
  background: var(--accent-soft);
  color: var(--accent-color);
  border: 1px solid color-mix(in srgb, var(--accent-color) 30%, var(--line));
  border-radius: 999px;
  padding: 2px 8px;
}

.blueprint-body {
  padding: 20px;
}

.capability-radar {
  margin-top: 12px;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: color-mix(in srgb, var(--surface) 90%, var(--surface-soft));
}

.capability-radar__head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.capability-radar__dots {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.capability-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--line-strong) 80%, transparent);
  transition: transform 0.24s ease, background-color 0.24s ease;
}

.capability-dot.is-active {
  transform: scale(1.15);
  background: var(--accent-color);
}

.capability-radar__chips {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.capability-chip {
  font-size: 0.72rem;
  color: var(--ink-light);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px 8px;
  background: var(--surface);
  transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s ease, background-color 0.25s ease;
}

.capability-chip.is-active {
  color: var(--accent-color);
  border-color: color-mix(in srgb, var(--accent-color) 45%, var(--line));
  background: color-mix(in srgb, var(--accent-color) 10%, var(--surface));
  transform: translateY(-1px);
}

.code-block {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  padding: 12px;
}

.code-block .line {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.type-anim {
  border-right: 2px solid var(--accent-color);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% {
    border-color: transparent;
  }
}

.crosshair {
  display: none;
}

.blueprint-section {
  margin-bottom: 64px;
}

.section-header {
  padding-bottom: 24px;
}

.bento-hard {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.bento-cell {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.bento-cell:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent-color) 42%, var(--line));
}

.bento-accent,
.bento-accent:hover {
  background: linear-gradient(145deg, color-mix(in srgb, var(--accent-color) 18%, var(--surface)), var(--surface));
}

.cell-index {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: color-mix(in srgb, var(--accent-color) 70%, var(--ink-light));
  margin-bottom: 12px;
}

.data-table {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.data-row {
  display: grid;
  grid-template-columns: 2fr 5fr 1fr;
  border-bottom: 1px solid var(--line);
}

.data-row:last-child {
  border-bottom: none;
}

.row-header {
  background: var(--surface-soft);
}

.col-head,
.mono-data,
.serif-data,
.mono-status {
  padding: 14px 16px;
  border-right: 1px solid var(--line);
}

.col-head:last-child,
.mono-status {
  border-right: none;
}

.col-head {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-light);
}

.mono-data,
.mono-status {
  font-family: var(--font-sans);
  font-size: 0.93rem;
  font-weight: 600;
}

.text-right {
  text-align: right;
}

.release-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.release-info,
.release-visual {
  padding: 30px;
}

.metrics-list {
  margin-top: 22px;
  border-top: 1px solid var(--line);
}

.metric {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.84rem;
}

.metric .label {
  color: var(--ink-light);
}

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

.logs {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-soft);
}

.logs p {
  margin-bottom: 10px;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 24px 6px 0;
  margin-top: 42px;
  color: var(--ink-light);
}

.footer a {
  color: var(--ink-color);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.reveal {
  opacity: 0;
  transform: translateY(12px) scale(0.99);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

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

.mobile-menu-btn {
  display: none;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  color: var(--ink-color);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 8px;
  cursor: pointer;
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 28px;
  transform: translateY(-100%);
  transition: transform 0.35s ease;
  background: color-mix(in srgb, var(--bg-color) 92%, transparent);
  backdrop-filter: blur(12px);
}

.mobile-overlay.is-active {
  transform: translateY(0);
}

.mobile-overlay a {
  font-family: var(--font-sans);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--ink-color);
  text-decoration: none;
}

.mobile-overlay .btn-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  color: var(--ink-color);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid::before {
    right: 8%;
    top: -40px;
  }

  .data-row {
    grid-template-columns: 1fr;
  }

  .col-head {
    display: none;
  }

  .row-header {
    display: none;
  }

  .serif-data,
  .mono-status {
    border-top: 1px dashed var(--line);
  }

  .mono-data,
  .serif-data,
  .mono-status {
    border-right: none;
  }

  .release-grid {
    grid-template-columns: 1fr;
  }

  .release-info.border-right {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 768px) {
  .topnav a:not(.btn-accent) {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  .topbar {
    margin-bottom: 28px;
    padding: 12px 14px;
  }

  .brand-name {
    font-size: 1.6rem;
  }

  .hero-cell {
    padding: 22px;
  }

  .hero-grid::before {
    display: none;
  }

  .bento-hard {
    display: flex;
    flex-direction: column;
  }

  .bento-cell,
  .bento-accent {
    grid-column: span 12 !important;
    padding: 20px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .competitive-points {
    gap: 8px;
  }

  .capability-radar__head {
    flex-direction: column;
  }

  .btn-solid,
  .btn-outline {
    width: 100%;
  }

  .release-info,
  .release-visual {
    padding: 22px 16px;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}