@import "./tokens.css";

:root {
  --wrap: 1120px;
  --sans: "DM Sans", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

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

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--vf-bg-base);
  color: var(--vf-text-primary);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--vf-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--vf-primary);
  color: var(--vf-text-inverse);
  padding: 8px 12px;
  z-index: 80;
  border-radius: 8px;
}

.skip:focus {
  top: 12px;
}

.wrap {
  width: min(var(--wrap), calc(100% - 2rem));
  margin-inline: auto;
}

.top {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--vf-bg-base) 88%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--vf-border-default);
}

.top-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--vf-text-primary);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-tile {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--vf-brand-mark-from), var(--vf-brand-mark-to));
  color: var(--vf-brand-mark-fg);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.brand-tile svg {
  display: block;
}

.nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
}

.nav a {
  color: var(--vf-text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
}

.nav a:hover {
  color: var(--vf-text-primary);
}

.theme-switch {
  display: flex;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--vf-border-default);
  border-radius: 999px;
  background: var(--vf-bg-elevated);
}

.theme-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--vf-border-default);
  cursor: pointer;
  padding: 0;
  background: var(--swatch-body);
  box-shadow: inset 8px 0 0 var(--swatch-primary);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.theme-dot[data-theme-set="light"] {
  --swatch-primary: #1d4ed8;
  --swatch-body: #f8fafc;
}

.theme-dot[data-theme-set="dark"] {
  --swatch-primary: #2563eb;
  --swatch-body: #0f172a;
}

.theme-dot[data-theme-set="orange"] {
  --swatch-primary: #d97757;
  --swatch-body: #faf9f5;
}

.theme-dot:hover,
.theme-dot[aria-pressed="true"] {
  border-color: var(--vf-primary);
  box-shadow: inset 8px 0 0 var(--swatch-primary), 0 0 0 2px var(--vf-primary-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.72rem 1.15rem;
  font: 600 0.95rem/1 var(--sans);
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
  text-decoration: none;
}

.btn:focus-visible,
.source-item:focus-visible,
.nav a:focus-visible,
.brand:focus-visible,
.theme-dot:focus-visible,
.shot-card:focus-visible {
  outline: 2px solid var(--vf-primary);
  outline-offset: 3px;
}

.btn-sm {
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
}

.btn-primary {
  background: var(--vf-primary);
  color: var(--vf-text-inverse);
}

.btn-primary:hover:not(:disabled) {
  background: var(--vf-primary-hover);
  text-decoration: none;
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  border-color: var(--vf-border-default);
  color: var(--vf-text-primary);
}

.btn-ghost:hover {
  border-color: var(--vf-text-muted);
  text-decoration: none;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 4.2rem 0 3.6rem;
}

.hero-arc {
  position: absolute;
  inset: 6% -8% auto;
  width: 116%;
  height: auto;
  color: color-mix(in srgb, var(--vf-primary) 38%, transparent);
  pointer-events: none;
}

.hero-arc path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: draw-arc 1.35s 0.15s ease forwards;
}

@keyframes draw-arc {
  to {
    stroke-dashoffset: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-arc path {
    stroke-dashoffset: 0;
    animation: none;
  }
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 2.4rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--vf-primary);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.lede {
  margin: 1rem 0 1.4rem;
  color: var(--vf-text-secondary);
  font-size: 1.05rem;
  max-width: 38rem;
}

.hero-pills {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-pills li {
  padding: 0.28rem 0.7rem;
  border: 1px solid var(--vf-border-default);
  border-radius: 999px;
  background: var(--vf-bg-elevated);
  color: var(--vf-text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-meta {
  margin: 1.1rem 0 0;
  color: var(--vf-text-muted);
  font-size: 0.88rem;
}

.hero-meta strong {
  color: var(--vf-text-primary);
  font-weight: 600;
}

.dot {
  display: inline-block;
  width: 3px;
  height: 3px;
  margin: 0 0.55rem 0.15rem;
  border-radius: 50%;
  background: var(--vf-border-default);
  vertical-align: middle;
}

.hero-stage {
  min-width: 0;
}

.hero-shot {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--vf-border-default);
  box-shadow: var(--vf-shadow-md), 0 24px 64px color-mix(in srgb, var(--vf-text-primary) 12%, transparent);
  background: var(--vf-bg-elevated);
}

.hero-shot img {
  width: 100%;
  height: auto;
  aspect-ratio: 1280 / 800;
  object-fit: cover;
  object-position: top left;
}

#platforms,
#gallery,
#features,
#steps,
#download,
#buy,
#top {
  scroll-margin-top: 80px;
}

.band {
  padding: 4rem 0;
  border-top: 1px solid var(--vf-border-default);
}

#buy.band {
  padding-bottom: 2.5rem;
}

.band-tight {
  padding-top: 3.2rem;
}

.section-title {
  margin: 0 0 0.5rem;
  font-size: 1.45rem;
  letter-spacing: -0.02em;
}

.section-desc {
  margin: 0 0 1.6rem;
  color: var(--vf-text-secondary);
  max-width: 40rem;
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 2rem;
  align-items: center;
  margin: 0 0 2.4rem;
}

.feature-row.is-flip .feature-copy {
  order: 2;
}

.feature-row.is-flip .feature-shot {
  order: 1;
}

.feature-copy h3 {
  margin: 0 0 0.7rem;
  font-size: 1.28rem;
  letter-spacing: -0.02em;
}

.feature-copy p {
  margin: 0 0 0.85rem;
  color: var(--vf-text-secondary);
}

.feature-points {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-points li {
  position: relative;
  padding: 0.35rem 0 0.35rem 1rem;
  color: var(--vf-text-secondary);
  font-size: 0.92rem;
}

.feature-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 6px;
  height: 2px;
  background: var(--vf-primary);
}

.feature-shot {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--vf-border-default);
  box-shadow: var(--vf-shadow-md);
  background: var(--vf-bg-elevated);
}

.feature-shot img {
  width: 100%;
  height: auto;
  aspect-ratio: 1280 / 800;
  object-fit: cover;
  object-position: top left;
}

.feature-shot-plain {
  min-height: 100%;
  display: flex;
}

.quality-board {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 1.4rem;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--vf-primary) 8%, var(--vf-bg-elevated)), var(--vf-bg-elevated));
}

.quality-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.quality-col {
  padding: 1rem 1.1rem;
  border: 1px solid var(--vf-border-default);
  border-radius: 12px;
  background: var(--vf-bg-elevated);
}

.quality-col.is-muted {
  color: var(--vf-text-muted);
}

.quality-col p {
  margin: 0.25rem 0 0;
  font-size: 0.92rem;
}

.quality-k {
  margin: 0 0 0.55rem !important;
  font-family: var(--mono);
  font-size: 0.72rem !important;
  letter-spacing: 0.06em;
  color: var(--vf-primary);
}

.quality-col.is-muted .quality-k {
  color: var(--vf-text-muted);
}

.quality-item {
  padding: 1rem 1.1rem;
  border: 1px solid var(--vf-border-default);
  border-radius: 12px;
  background: var(--vf-bg-elevated);
}

.quality-item strong {
  display: block;
  font-size: 1.02rem;
}

.quality-item span {
  display: block;
  margin-top: 0.25rem;
  color: var(--vf-text-muted);
  font-size: 0.88rem;
}

.caps {
  list-style: none;
  margin: 0.4rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.caps li {
  padding: 1.05rem 1rem 1.1rem;
  background: var(--vf-bg-elevated);
  border: 1px solid var(--vf-border-default);
  border-radius: var(--vf-radius-lg);
}

.caps svg {
  width: 20px;
  height: 20px;
  color: var(--vf-primary);
  margin-bottom: 0.7rem;
}

.caps strong {
  display: block;
  font-size: 0.95rem;
}

.caps span {
  display: block;
  margin-top: 0.3rem;
  color: var(--vf-text-muted);
  font-size: 0.82rem;
}

.shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.shot-card {
  margin: 0;
  padding: 0;
  border: 1px solid var(--vf-border-default);
  border-radius: var(--vf-radius-lg);
  background: var(--vf-bg-elevated);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  color: inherit;
  font: inherit;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.shot-card:hover,
.shot-card[aria-pressed="true"] {
  border-color: var(--vf-primary);
  box-shadow: 0 0 0 1px var(--vf-primary-muted);
}

.shot-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top left;
  border-bottom: 1px solid var(--vf-border-default);
}

.shot-card figcaption {
  padding: 0.85rem 1rem 1rem;
}

.shot-card strong {
  display: block;
  font-size: 0.95rem;
}

.shot-card span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.82rem;
  color: var(--vf-text-muted);
}

.platforms {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.platforms li {
  padding: 1.1rem 1rem;
  background: var(--vf-bg-elevated);
  border: 1px solid var(--vf-border-default);
  border-radius: var(--vf-radius-lg);
  text-align: center;
}

.platforms strong {
  display: block;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.platforms span {
  display: block;
  margin-top: 0.35rem;
  color: var(--vf-text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0;
}

.pipe {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.pipe li {
  padding: 1.2rem 1.2rem 1.2rem 0;
  border-top: 2px solid var(--vf-border-default);
  position: relative;
}

.pipe li::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 42px;
  height: 2px;
  background: var(--vf-primary);
}

.pipe-k {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--vf-primary);
  margin-bottom: 0.4rem;
}

.pipe-t {
  color: var(--vf-text-primary);
}

.cta-band {
  padding: 2.6rem 0;
  background: var(--vf-bg-elevated);
  border-top: 1px solid var(--vf-border-default);
  border-bottom: 1px solid var(--vf-border-default);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cta-inner .section-desc {
  margin-bottom: 0;
}

.shops {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.shop-card {
  padding: 1.2rem;
  background: var(--vf-bg-elevated);
  border: 1px solid var(--vf-border-default);
  border-radius: var(--vf-radius-lg);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.shop-name {
  margin: 0;
  font-size: 1.05rem;
}

.shop-hint {
  margin: 0 0 0.6rem;
  color: var(--vf-text-muted);
  font-size: 0.88rem;
}

.shop-link {
  align-self: flex-start;
}

.foot {
  padding: 1.75rem 0 2.4rem;
  color: var(--vf-text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--vf-border-default);
  background: var(--vf-bg-subtle);
}

.foot-inner p {
  margin: 0 0 0.7rem;
  max-width: 46rem;
}

.foot-title {
  margin: 0 0 0.7rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--vf-text-secondary);
}

.foot-meta {
  font-family: var(--mono);
  font-size: 0.75rem !important;
}

dialog {
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
}

dialog::backdrop {
  background: var(--vf-bg-overlay);
}

.dialog-card {
  width: min(460px, 92vw);
  background: var(--vf-bg-elevated);
  border: 1px solid var(--vf-border-default);
  border-radius: 16px;
  padding: 1.25rem 1.2rem 1.1rem;
  box-shadow: var(--vf-shadow-md);
}

.dialog-card h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  outline: none;
}

.dialog-ver {
  margin: 0.28rem 0 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--vf-primary);
}

.install-notes {
  margin: 1rem 0 1.15rem;
  padding: 0 0 0 1.15rem;
  color: var(--vf-text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
}

.install-notes li + li {
  margin-top: 0.5rem;
}

.install-notes code {
  font-family: var(--mono);
  font-size: 0.8em;
}

.install-notes strong {
  font-weight: 650;
  color: var(--vf-text-primary);
}

.source-label {
  margin: 0 0 0.55rem;
  font-size: 0.88rem;
  font-weight: 600;
}

.source-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.source-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 0.85rem 0.95rem;
  border-radius: 12px;
  border: 1px solid var(--vf-border-default);
  background: var(--vf-bg-subtle);
  color: var(--vf-text-primary);
  font: 500 0.95rem/1.3 var(--sans);
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease;
}

.source-item:hover {
  border-color: var(--vf-text-muted);
}

.source-item.is-selected {
  border-color: var(--vf-primary);
  background: var(--vf-primary-muted);
}

.source-icon {
  width: 22px;
  height: 22px;
  color: var(--vf-text-muted);
  flex-shrink: 0;
}

.source-item.is-selected .source-icon {
  color: var(--vf-primary);
}

.source-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.source-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--vf-text-muted);
}

.source-check {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid var(--vf-border-default);
  flex-shrink: 0;
}

.source-item.is-selected .source-check {
  border-color: var(--vf-primary);
  background: var(--vf-primary);
  box-shadow: inset 0 0 0 3px var(--vf-bg-elevated);
}

.dialog-actions {
  display: flex;
  gap: 10px;
  margin-top: 1.1rem;
}

.dialog-actions .btn-ghost {
  flex: 0 0 auto;
}

.dialog-actions .btn-primary {
  flex: 1;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--vf-bg-elevated);
  border: 1px solid var(--vf-border-default);
  color: var(--vf-text-primary);
  padding: 0.7rem 1rem;
  border-radius: 10px;
  font-size: 0.88rem;
  z-index: 60;
  max-width: min(420px, 92vw);
  box-shadow: var(--vf-shadow-md);
}

@media (max-width: 900px) {
  .hero-grid,
  .pipe,
  .shops,
  .cta-inner,
  .shots,
  .feature-row {
    grid-template-columns: 1fr;
    display: flex;
    flex-direction: column;
  }

  .feature-row.is-flip .feature-copy,
  .feature-row.is-flip .feature-shot {
    order: 0;
  }

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

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

  .nav {
    display: none;
  }

  .theme-switch {
    margin-left: auto;
  }

  .hero-stage {
    order: -1;
  }

  .pipe li {
    padding-left: 0;
  }
}

@media (max-width: 520px) {
  .caps,
  .quality-compare {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 2.2rem;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .top-inner .btn-sm {
    display: none;
  }
}