:root {
  --linen: #efe8db;
  --paper: #fffdf7;
  --ink: #1b1611;
  --mute: #5d564c;
  --line: #d7cdb8;
  --walnut: #1c1611;
  --walnut-soft: #2a221b;
  --brass: #b8892f;
  --get: #146b4a;
  --get-ink: #f4fff8;
  --chip: #e8dfcd;
  --warn-bg: #f7ead4;
  --warn-ink: #6d3d0d;
  --risk-bg: #f6dfd9;
  --risk-ink: #6e2218;
  --win: #2f6fad;
  --mac: #5a5a5a;
  --linux: #3d7a46;
  --android: #3d8a4a;
  --shadow: 0 18px 40px rgba(40, 28, 12, 0.12);
  --radius: 22px;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(1200px 420px at 12% -10%, rgba(184, 137, 47, 0.16), transparent 55%),
    linear-gradient(180deg, #f6f0e4 0%, var(--linen) 180px);
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
}

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

a {
  color: var(--get);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #0f5138;
}

:focus-visible {
  outline: 3px solid var(--brass);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 12px;
  top: 10px;
  z-index: 80;
  transform: translateY(-160%);
  padding: 0.5rem 0.8rem;
  background: var(--paper);
  color: var(--ink);
  border-radius: 8px;
}

.skip:focus {
  transform: none;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.ribbon {
  background: var(--walnut);
  color: #f3ead8;
  font-size: 0.86rem;
}

.ribbon-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  flex-wrap: wrap;
}

.mast {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 253, 247, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}

.mast.is-stuck {
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px rgba(28, 22, 17, 0.06);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 6px 16px rgba(28, 22, 17, 0.16);
}

.brand small {
  display: block;
  font-weight: 500;
  color: var(--mute);
  font-size: 0.75rem;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font: inherit;
  cursor: pointer;
}

.lane ul {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.lane a {
  display: inline-flex;
  align-items: center;
  padding: 0.48rem 0.78rem;
  color: var(--ink);
  text-decoration: none;
  border-radius: 999px;
  font-size: 0.95rem;
}

.lane a:hover,
.lane a[aria-current="page"] {
  background: var(--chip);
}

.lane a.get {
  background: var(--get);
  color: var(--get-ink);
  font-weight: 700;
  margin-left: 0.25rem;
}

.lane a.get:hover {
  background: #0f5138;
  color: var(--get-ink);
}

body.nav-lock {
  overflow: hidden;
}

.product {
  padding: 2.4rem 0 1.4rem;
}

.product-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  align-items: start;
}

.icon-plate {
  width: 168px;
  padding: 1rem;
  background:
    linear-gradient(180deg, #fff 0%, #f4ead6 100%);
  border: 1px solid #eadfc8;
  border-radius: 34px;
  box-shadow: var(--shadow);
}

.icon-plate img {
  width: 136px;
  height: 136px;
  object-fit: cover;
  border-radius: 28px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 0.7rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.62rem;
  border-radius: 999px;
  background: var(--chip);
  color: var(--ink);
  font-size: 0.78rem;
}

.tag.on {
  background: #d9efe4;
  color: #146b4a;
}

h1,
h2,
h3 {
  line-height: 1.25;
  margin: 0 0 0.6rem;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.1rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
}

.lead {
  color: var(--mute);
  max-width: 62ch;
  margin: 0 0 1rem;
}

.judge {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 1rem;
  margin: 0 0 1rem;
  padding: 0.7rem 0.85rem;
  background: #f7f1e4;
  border: 1px dashed #cbb992;
  border-radius: 14px;
  color: var(--mute);
  font-size: 0.92rem;
}

.judge b {
  color: var(--ink);
}

.acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.1rem 0;
}

.get,
.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.55rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}

.get {
  background: var(--get);
  color: var(--get-ink);
  box-shadow: 0 10px 20px rgba(20, 107, 74, 0.22);
}

.get:hover {
  background: #0f5138;
  color: var(--get-ink);
}

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

.ghost:hover {
  background: var(--chip);
  color: var(--ink);
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.stat {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.85rem 0.95rem;
}

.stat strong {
  display: block;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.stat span {
  color: var(--mute);
  font-size: 0.86rem;
}

.section {
  padding: 2.3rem 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.kicker {
  display: inline-block;
  margin-bottom: 0.35rem;
  color: var(--brass);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.film {
  position: relative;
  background: var(--walnut);
  color: #f6eedd;
  padding: 1.4rem 0 1.6rem;
}

.film .section-head {
  color: #f6eedd;
}

.film .kicker {
  color: #e2c06a;
}

.film-frame {
  position: relative;
  min-height: 280px;
}

.slide {
  display: none;
  margin: 0;
}

.slide.is-on {
  display: block;
}

.slide img,
.mock {
  width: 100%;
  border-radius: 18px;
  background: #2b241c;
}

.slide img {
  aspect-ratio: 880 / 700;
  object-fit: cover;
  max-height: 460px;
}

.slide figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.7rem;
  color: #d8ccb4;
  font-size: 0.86rem;
}

.mock {
  min-height: 320px;
  padding: 1.1rem;
  border: 1px solid #3c3328;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.mock-bar {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.9rem;
}

.mock-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #6b5d49;
}

.mock-grid {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 0.8rem;
  min-height: 220px;
}

.mock-side,
.mock-pane,
.mock-line,
.swatch,
.pill {
  border-radius: 10px;
}

.mock-side {
  background: #3a3126;
}

.mock-pane {
  background: linear-gradient(180deg, #4a3f31, #2e271e);
  padding: 0.8rem;
}

.mock-line {
  height: 10px;
  margin-bottom: 0.55rem;
  background: #6d5d47;
}

.mock-line.w70 { width: 70%; }
.mock-line.w40 { width: 40%; }
.mock-line.w88 { width: 88%; }

.swatch-row,
.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.swatch {
  width: 36px;
  height: 36px;
}

.swatch.a { background: #146b4a; }
.swatch.b { background: #b8892f; }
.swatch.c { background: #2f6fad; }
.swatch.d { background: #8a4b2a; }

.pill {
  padding: 0.25rem 0.6rem;
  background: #43392c;
  color: #efe4cc;
  font-size: 0.78rem;
}

.film-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-top: 0.9rem;
}

.film-tools button {
  border: 1px solid #4a3f31;
  background: #2b241c;
  color: #f6eedd;
  border-radius: 999px;
  min-height: 40px;
  padding: 0.35rem 0.9rem;
  font: inherit;
  cursor: pointer;
}

.film-tools button[aria-selected="true"] {
  background: var(--brass);
  color: #1c1611;
  border-color: var(--brass);
}

.dots {
  display: flex;
  gap: 0.35rem;
}

.shelf,
.quad,
.split-grid,
.os-bay,
.pair {
  display: grid;
  gap: 0.9rem;
}

.shelf,
.quad,
.os-bay {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.pair,
.split-grid {
  grid-template-columns: 1fr 1fr;
}

.tile,
.card,
.os,
.note,
.warn,
.risk,
.step,
.shot {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.tile,
.card,
.os,
.note,
.warn,
.risk,
.step {
  padding: 1.05rem 1.1rem 1.15rem;
}

.tile {
  color: inherit;
  text-decoration: none;
  display: block;
  min-height: 100%;
}

.tile:hover,
.card:hover,
.os:hover {
  transform: translateY(-3px);
}

.meta {
  color: var(--brass);
  font-size: 0.78rem;
  font-weight: 700;
}

.idx {
  display: inline-block;
  margin-bottom: 0.35rem;
  color: var(--mute);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.glyph {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 0.7rem;
  border-radius: 12px;
  background: #efe4cd;
  color: #146b4a;
}

.glyph svg {
  width: 22px;
  height: 22px;
}

.req {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 1.1rem 1.2rem;
}

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

.checks li {
  position: relative;
  padding: 0.45rem 0 0.45rem 1.6rem;
  border-bottom: 1px solid #efe6d4;
}

.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 3px;
  background: #146b4a;
  box-shadow: inset 0 0 0 2px #d9efe4;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.2rem;
  align-items: center;
}

.shot {
  overflow: hidden;
  padding: 0.7rem;
}

.shot img {
  width: 100%;
  aspect-ratio: 880 / 700;
  object-fit: cover;
  border-radius: 16px;
}

.shot figcaption {
  display: flex;
  justify-content: space-between;
  padding: 0.55rem 0.2rem 0.2rem;
  color: var(--mute);
  font-size: 0.84rem;
}

.os .tag.win { color: var(--win); background: #dceaf7; }
.os .tag.mac { color: var(--mac); background: #ececec; }
.os .tag.linux { color: var(--linux); background: #dcefe0; }
.os .tag.android { color: var(--android); background: #d9f0de; }

.faq details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.2rem 1rem;
  margin-bottom: 0.65rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  padding: 0.85rem 0;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "展开";
  float: right;
  color: var(--mute);
  font-weight: 500;
  font-size: 0.82rem;
}

.faq details[open] summary::after {
  content: "收起";
}

.faq details p {
  margin: 0 0 0.95rem;
  color: var(--mute);
}

.warn {
  background: var(--warn-bg);
  color: var(--warn-ink);
}

.risk {
  background: var(--risk-bg);
  color: var(--risk-ink);
}

.page-hero {
  padding: 2rem 0 1rem;
}

.crumbs {
  color: var(--mute);
  font-size: 0.88rem;
}

.crumbs a {
  color: inherit;
}

.path {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.path a {
  display: block;
  padding: 0.9rem 0.95rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  color: inherit;
  text-decoration: none;
}

.path .n {
  display: block;
  color: var(--brass);
  font-size: 0.78rem;
  font-weight: 700;
}

.path .t {
  display: block;
  font-weight: 700;
  margin: 0.2rem 0;
}

.path .h {
  color: var(--mute);
  font-size: 0.86rem;
}

.hash-slot,
.cmd-box {
  margin-top: 0.7rem;
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
  background: #f4eee0;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.86rem;
}

.digest {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  margin: 1rem 0 0;
}

.digest div {
  background: #f7f1e4;
  border-radius: 12px;
  padding: 0.7rem 0.8rem;
}

.digest dt {
  font-size: 0.78rem;
  color: var(--mute);
}

.digest dd {
  margin: 0.15rem 0 0;
  font-weight: 700;
}

.colophon {
  background: var(--walnut);
  color: #efe6d4;
  padding: 2.4rem 0 1.2rem;
  margin-top: 2rem;
}

.colophon a {
  color: #f0d48a;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1.1fr;
  gap: 1.2rem;
}

.colophon .brand {
  color: #fff7e8;
  margin-bottom: 0.7rem;
}

.colophon .brand small {
  color: #cbb992;
}

.colophon h3 {
  font-size: 0.92rem;
}

.colophon ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.colophon li {
  margin: 0.35rem 0;
}

.legal {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px solid #3a3128;
  color: #cbb992;
  font-size: 0.84rem;
}

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

.motion-ok [data-rise] {
  opacity: 0;
  transform: translateY(14px);
}

.motion-ok [data-rise].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

@media (max-width: 980px) {
  .product-grid,
  .split,
  .shelf,
  .quad,
  .os-bay,
  .pair,
  .split-grid,
  .path,
  .digest,
  .foot-grid {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .lane {
    position: fixed;
    inset: 72px 0 auto 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    visibility: hidden;
    padding: 0.7rem 1rem 1rem;
  }

  .lane.is-open {
    transform: none;
    visibility: visible;
  }

  .lane ul {
    flex-direction: column;
    align-items: stretch;
  }

  .lane a.get {
    margin-left: 0;
    justify-content: center;
  }

  .product-grid,
  .split,
  .shelf,
  .quad,
  .os-bay,
  .pair,
  .split-grid,
  .path,
  .digest,
  .foot-grid,
  .mock-grid {
    grid-template-columns: 1fr;
  }

  .icon-plate {
    width: 132px;
  }

  .icon-plate img {
    width: 108px;
    height: 108px;
  }
}

@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;
    scroll-behavior: auto !important;
  }

  .tile:hover,
  .card:hover,
  .os:hover {
    transform: none;
  }
}