/* 岩面智析 RockFacet Pro 网站样式。颜色取自软件图标（深青底 + 暖色岩面），浅色 / 深色跟随系统。 */
:root {
  --bg: #f6f4ef;
  --bg-alt: #eeebe3;
  --card: #ffffff;
  --fg: #1a2a31;
  --muted: #56666d;
  --line: #ddd8cc;
  --accent: #c2502e; /* 按钮底色：白字对比度 ≥ 4.5 */
  --accent-hover: #a9431f;
  --accent-fg: #ffffff;
  --accent-soft: #f7e3da;
  --ink: #264653; /* 图标的深青 */
  --ok: #1f7a55;
  --ok-bg: #e2f2ea;
  --shadow: 0 1px 2px rgba(26, 42, 49, 0.06), 0 8px 24px rgba(26, 42, 49, 0.08);
  --radius: 12px;
  --font:
    system-ui, -apple-system, "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC",
    "Hiragino Sans GB", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e191e;
    --bg-alt: #13222a;
    --card: #172830;
    --fg: #e7eef0;
    --muted: #9db0b7;
    --line: #263a43;
    --accent: #f0845a;
    --accent-hover: #f59c78;
    --accent-fg: #1b0d07;
    --accent-soft: #3a2219;
    --ink: #9fd0dc;
    --ok: #6fd3a5;
    --ok-bg: #143628;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.7 var(--font);
  overflow-x: hidden;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--accent);
  text-underline-offset: 3px;
}
a:hover {
  color: var(--accent-hover);
}
h1,
h2,
h3 {
  line-height: 1.3;
  margin: 0;
}
h2 {
  font-size: clamp(24px, 3.4vw, 32px);
  letter-spacing: 0.02em;
}
h3 {
  font-size: 18px;
}
p {
  margin: 0;
}
code {
  font-family: var(--mono);
}
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
.wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 16px;
}
@media (min-width: 720px) {
  .wrap {
    padding: 0 28px;
  }
}
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--card);
  padding: 8px 12px;
  z-index: 20;
}
.skip:focus {
  left: 8px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: 10px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  white-space: nowrap;
  transition:
    background 0.15s,
    border-color 0.15s;
}
.btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--accent-fg);
}
.btn--ghost {
  background: transparent;
  color: var(--accent);
}
.btn--ghost:hover {
  background: var(--accent-soft);
  color: var(--accent);
}
.btn--sm {
  min-height: 36px;
  padding: 6px 14px;
  font-size: 14px;
}
.btn--lg {
  min-height: 52px;
  padding: 12px 28px;
  font-size: 17px;
}
.copy {
  font: inherit;
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--fg);
}
.copy:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.copy[data-done] {
  border-color: var(--ok);
  color: var(--ok);
}

/* ---------- header ---------- */
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  text-decoration: none;
  min-width: 0;
}
.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex: none;
}
.brand__zh {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.brand__en {
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav a:not(.btn) {
  color: var(--fg);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 15px;
  white-space: nowrap;
}
.nav a:not(.btn):hover {
  background: var(--bg-alt);
  color: var(--fg);
}
.nav .btn {
  margin-left: 6px;
}
@media (max-width: 760px) {
  .nav a[href="#features"],
  .nav a[href="#modules"],
  .nav a[href="#buy"] {
    display: none;
  }
}
@media (max-width: 400px) {
  .brand__en {
    display: none;
  }
}

/* ---------- hero ---------- */
.hero {
  padding: 48px 0 56px;
}
.hero__inner {
  display: grid;
  gap: 36px;
  align-items: center;
}
@media (min-width: 980px) {
  .hero {
    padding: 72px 0 80px;
  }
  .hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }
}
.eyebrow {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.12em;
  font-size: 14px;
  margin-bottom: 12px;
}
.hero h1 {
  font-size: clamp(36px, 7vw, 56px);
  letter-spacing: 0.04em;
}
.hero h1 span {
  display: block;
  font-size: 0.42em;
  letter-spacing: 0.02em;
  color: var(--muted);
  font-weight: 600;
  margin-top: 6px;
}
.lead {
  font-size: 18px;
  color: var(--muted);
  margin: 20px 0 28px;
  max-width: 34em;
}
.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero__meta {
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
}
.window {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: #1b1f24;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.window__bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 12px;
  background: #23282e;
  color: #aeb7bf;
  font-size: 12.5px;
}
.window__bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3a4149;
  flex: none;
}
.window__bar span {
  margin-left: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- sections ---------- */
.section {
  padding: 64px 0;
}
.section--alt {
  background: var(--bg-alt);
}
.section__lead {
  color: var(--muted);
  margin: 10px 0 0;
  max-width: 46em;
}

.features {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  counter-reset: f;
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}
/* 五张卡片：手机一列；中等宽度两列（最后一张占满）；宽屏上面三张、下面两张 */
@media (min-width: 640px) {
  .features {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .feature:last-child {
    grid-column: 1 / -1;
  }
}
@media (min-width: 980px) {
  .features {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .feature {
    grid-column: span 2;
  }
  .feature:nth-child(n + 4),
  .feature:last-child {
    grid-column: span 3;
  }
}
.feature {
  counter-increment: f;
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 22px;
}
.feature::before {
  content: counter(f);
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 15px;
}
.feature h3 {
  margin-bottom: 8px;
}
.feature p {
  color: var(--muted);
  font-size: 15px;
}
.chips {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chips li {
  font-size: 13px;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  white-space: nowrap;
}

.gallery {
  display: grid;
  gap: 16px;
  margin-top: 28px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .gallery__plot {
    grid-column: 1 / -1;
  }
  .gallery .gallery__plot img {
    aspect-ratio: 32 / 10;
  }
}
@media (min-width: 980px) {
  .gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .gallery__plot {
    grid-column: auto;
  }
  .gallery .gallery__plot img {
    aspect-ratio: 16 / 10;
  }
}
.gallery figure {
  margin: 0;
}
.gallery img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #1b1f24;
}
.gallery__plot img {
  object-fit: contain;
  background: #ffffff;
  padding: 6px;
}
.gallery figcaption {
  font-size: 14px;
  color: var(--muted);
  margin-top: 8px;
}

.modules {
  display: grid;
  gap: 16px;
  margin-top: 28px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
}
.module {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.module h3 {
  font-size: 22px;
  margin: 10px 0 8px;
}
.module p:last-child {
  color: var(--muted);
}
.module--soon {
  border-style: dashed;
  background: transparent;
}
.badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--line);
}
.badge--ok {
  background: var(--ok-bg);
  color: var(--ok);
  border-color: transparent;
}

/* ---------- download ---------- */
.download {
  display: grid;
  gap: 32px;
}
@media (min-width: 900px) {
  .download {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }
}
.release {
  margin-top: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.release__loading,
.release__ok,
.release__error {
  display: none;
}
.release[data-state="loading"] .release__loading {
  display: block;
  color: var(--muted);
}
.release[data-state="ok"] .release__ok {
  display: block;
}
.release[data-state="error"] .release__error {
  display: block;
}
.release__error {
  font-size: 17px;
}
.release__title {
  font-size: 22px;
  font-weight: 700;
}
.release__tag {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  margin-left: 6px;
}
.release__meta {
  color: var(--muted);
  margin: 4px 0 20px;
}
.sha {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 13px;
}
.sha__label {
  color: var(--muted);
  font-weight: 600;
}
.sha__value {
  flex: 1 1 260px;
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-all;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 12.5px;
}
.notes {
  margin-top: 16px;
}
.notes summary {
  cursor: pointer;
  color: var(--muted);
}
.notes__text {
  white-space: pre-wrap;
  margin-top: 8px;
  font-size: 15px;
}
.download__side h3 {
  font-size: 16px;
  margin: 0 0 6px;
}
.download__side p {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 20px;
}
@media (min-width: 900px) {
  .download__side {
    padding-top: 56px;
  }
}

.ticks {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  gap: 12px 32px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
}
.ticks li {
  position: relative;
  padding-left: 30px;
  color: var(--muted);
}
.ticks li b {
  color: var(--fg);
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.45em;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ok-bg);
  box-shadow:
    inset 0 0 0 5px var(--ok-bg),
    inset 0 0 0 8px var(--ok);
}

.guide {
  display: grid;
  gap: 20px;
  align-items: center;
}
.guide p {
  color: var(--muted);
  margin-top: 10px;
  max-width: 44em;
}
.guide__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
@media (min-width: 900px) {
  .guide {
    grid-template-columns: 1fr auto;
    gap: 48px;
  }
}

.section--buy {
  background: #264653;
  color: #eef4f5;
}
.section--buy h2 {
  color: #ffffff;
}
.buy {
  display: grid;
  gap: 24px;
  align-items: center;
}
.buy p {
  color: #c9d9dd;
  margin-top: 10px;
  max-width: 40em;
}
@media (min-width: 900px) {
  .buy {
    grid-template-columns: 1fr auto;
    gap: 48px;
  }
}
.qq {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  justify-self: start;
}
.qq__label {
  font-size: 13px;
  color: #c9d9dd;
  font-weight: 600;
  letter-spacing: 0.1em;
}
.qq__value {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: #ffffff;
}
.copy--on-dark {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
}
.copy--on-dark:hover {
  color: #ffffff;
  border-color: #ffffff;
}
.copy--on-dark[data-done] {
  color: #9ee6c3;
  border-color: #9ee6c3;
}

.foot {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  font-size: 14px;
  color: var(--muted);
}
.foot__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
}
.foot a {
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}