/* OneCRT 官网样式表
   版式参考 workbuddy.cn 的官网：白底大量留白、超大字重标题、黑色胶囊主按钮 +
   一档薄荷绿光晕、分栏式区块导语（左大标题 / 右小段说明）、分区着色面板、
   黑底页脚配巨型描边水印。
   配色仍沿用应用图标的两档绿（薄荷 #95EDAE / 亮绿 #2BDB5C），绿色只做点缀，
   大面积用近黑与中性灰，正文对比度按 WCAG AA 校过。 */

:root {
  --ink: #0b0f0d;
  --ink-2: #58615c;
  --ink-3: #78817b;
  --page: #ffffff;
  --page-2: #f7f9f8;
  --card: #ffffff;
  --line: #e8ece9;
  --line-2: #d9ded9;
  --brand: #2bdb5c;
  --brand-mint: #95edae;
  --brand-deep: #0a7a33;
  --brand-wash: #eefaf2;
  --panel: #f3fbf6;
  --panel-line: #d9f0e2;
  --btn: #14181a;
  --btn-hover: #000000;
  --code-bg: #0e1412;
  --radius-lg: 28px;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-1: 0 1px 2px rgba(11, 15, 13, 0.04), 0 8px 24px rgba(11, 15, 13, 0.05);
  --shadow-2: 0 2px 6px rgba(11, 15, 13, 0.05), 0 24px 60px rgba(11, 15, 13, 0.1);
  --shadow-3: 0 8px 20px rgba(11, 15, 13, 0.08), 0 48px 120px rgba(11, 15, 13, 0.16);
  --maxw: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 16px/1.75 var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--brand-deep);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--brand-deep);
  outline-offset: 3px;
  border-radius: 6px;
}

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

::selection {
  background: var(--brand-mint);
  color: #06170c;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 28px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 16px;
  top: 16px;
  z-index: 60;
  padding: 10px 16px;
  background: var(--card);
  border-radius: 8px;
  box-shadow: var(--shadow-1);
}

/* ---------- 顶栏 ---------- */

header.site {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}

header.site.stuck {
  border-bottom-color: var(--line);
  background: rgba(255, 255, 255, 0.9);
}

header.site .wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 18.5px;
  letter-spacing: -0.02em;
  color: var(--ink);
  flex: none;
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

nav.main {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-inline: auto;
}

nav.main a {
  position: relative;
  color: var(--ink-2);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: color 0.18s ease;
}

nav.main a:hover {
  color: var(--ink);
  text-decoration: none;
}

nav.main a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

nav.main a:hover::after,
nav.main a.active::after {
  transform: scaleX(1);
}

nav.main a.active {
  color: var(--ink);
}

.head-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  color: var(--ink-2);
  border: 1px solid transparent;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.icon-btn:hover {
  color: var(--ink);
  background: var(--page-2);
  border-color: var(--line);
  text-decoration: none;
}

.icon-btn svg {
  width: 19px;
  height: 19px;
}

.nav-toggle {
  display: none;
  position: relative;
  margin-left: auto;
}

.nav-toggle > summary {
  list-style: none;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
}

.nav-toggle > summary::-webkit-details-marker {
  display: none;
}

.nav-toggle > summary svg {
  width: 18px;
  height: 18px;
}

.nav-toggle > div {
  position: absolute;
  right: 0;
  top: 48px;
  min-width: 190px;
  padding: 8px;
  display: grid;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-2);
}

.nav-toggle a {
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--ink-2);
  font-size: 15px;
}

.nav-toggle a:hover {
  background: var(--page-2);
  color: var(--ink);
  text-decoration: none;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease,
    border-color 0.18s ease, color 0.18s ease;
}

.btn:hover {
  text-decoration: none;
}

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

.btn-dark {
  background: var(--btn);
  color: #fff;
  box-shadow: 0 8px 20px rgba(11, 15, 13, 0.18);
}

.btn-dark:hover {
  background: var(--btn-hover);
  box-shadow: 0 12px 28px rgba(11, 15, 13, 0.26);
}

.btn-dark svg {
  width: 17px;
  height: 17px;
}

.btn-brand {
  background: var(--brand);
  color: #06170c;
  box-shadow: 0 8px 20px rgba(43, 219, 92, 0.28);
}

.btn-brand:hover {
  background: #35e867;
}

.btn-line {
  background: #fff;
  color: var(--ink);
  border-color: var(--line-2);
}

.btn-line:hover {
  border-color: var(--ink-3);
  background: var(--page-2);
}

.btn-sm {
  padding: 10px 18px;
  font-size: 14.5px;
  gap: 7px;
}

.btn-full {
  width: 100%;
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding: clamp(64px, 9vw, 116px) 0 0;
  text-align: center;
  overflow: hidden;
}

/* 两团薄荷光晕：参考站用径向渐变铺底，这里用两个大模糊圆 + 遮罩，成本只有一次合成 */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
}

.hero::before {
  width: 760px;
  height: 620px;
  left: -280px;
  top: 120px;
  background: radial-gradient(circle, rgba(149, 237, 174, 0.5), rgba(149, 237, 174, 0) 68%);
}

.hero::after {
  width: 820px;
  height: 680px;
  right: -320px;
  top: 300px;
  background: radial-gradient(circle, rgba(43, 219, 92, 0.28), rgba(43, 219, 92, 0) 70%);
}

.hero .wrap {
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin: 0 auto;
  max-width: 20ch;
  font-size: clamp(40px, 6.6vw, 82px);
  line-height: 1.08;
  letter-spacing: -0.045em;
  font-weight: 800;
  text-wrap: balance;
}

/* 关键词底下压一道薄荷色马克笔：::after 压到文字后面，靠 .hl 自建层叠上下文 */
.hero h1 .hl {
  position: relative;
  display: inline-block;
  white-space: nowrap;
  z-index: 0;
  padding-inline: 0.04em;
}

.hero h1 .hl::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.06em;
  height: 0.26em;
  border-radius: 3px;
  background: linear-gradient(90deg, rgba(149, 237, 174, 0.95), rgba(43, 219, 92, 0.45));
  z-index: -1;
}

.hero .lede {
  margin: 24px auto 0;
  max-width: 60ch;
  font-size: clamp(16px, 1.9vw, 18.5px);
  line-height: 1.7;
  color: var(--ink-2);
  text-wrap: pretty;
}

/* 中文按字断行，"不是""安装包"这类词会被拆到两行，用 nowrap 兜住 */
.nb {
  white-space: nowrap;
}

.hero .cta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: center;
}

.hero .meta {
  margin: 22px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
  justify-content: center;
  font-size: 13.5px;
  color: var(--ink-3);
}

.hero .meta span + span::before {
  content: "·";
  margin: 0 12px;
  color: var(--line-2);
}

.shot-hero {
  position: relative;
  z-index: 1;
  margin: clamp(44px, 6vw, 72px) auto 0;
  max-width: 1080px;
  padding-inline: 28px;
}

.shot-hero img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid rgba(11, 15, 13, 0.09);
  box-shadow: var(--shadow-3);
}

/* ---------- 区块基本式 ---------- */

section {
  padding: clamp(72px, 8.5vw, 124px) 0;
}

section.slim {
  padding: clamp(56px, 6.5vw, 88px) 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--brand-wash);
  border: 1px solid var(--brand-mint);
  color: var(--brand-deep);
  font-size: 12.5px;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.eyebrow .en {
  font-size: 11px;
  letter-spacing: 0.12em;
  opacity: 0.72;
  font-weight: 600;
}

/* 分栏导语：左大标题、右小段说明，参考站每个区块都这么起头 */
.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 28px 56px;
  align-items: end;
}

.intro .eyebrow {
  grid-column: 1 / -1;
  /* 网格项默认拉伸，inline-flex 的胶囊会被拉成一整条 */
  justify-self: start;
}

h2.sec {
  margin: 0;
  font-size: clamp(30px, 4.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.04em;
  font-weight: 800;
  text-wrap: balance;
}

h2.sec .thin {
  color: var(--ink-3);
  font-weight: 600;
}

.intro p {
  margin: 0 0 6px;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.75;
  text-wrap: pretty;
}

.intro p + p {
  margin-top: 10px;
}

.center-head {
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
}

.center-head h2.sec {
  margin-top: 18px;
}

.center-head p {
  margin: 16px auto 0;
  max-width: 62ch;
  color: var(--ink-2);
  font-size: 17px;
}

/* ---------- 分区着色面板 ---------- */

.panel {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--panel-line);
  background: var(--panel);
  padding: clamp(28px, 4.2vw, 60px);
  overflow: hidden;
}

/* 细网格：两道 repeating-linear-gradient，比引图片省一个请求 */
.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(10, 122, 51, 0.055) 1px, transparent 1px),
    linear-gradient(rgba(10, 122, 51, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 80% at 50% 0%, #000 30%, transparent 78%);
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 30%, transparent 78%);
  pointer-events: none;
}

.panel > * {
  position: relative;
}

/* ---------- 功能切换 ---------- */

.tabbar {
  margin-top: 36px;
  display: flex;
  justify-content: center;
}

.tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 4px;
  border-radius: 999px;
  background: var(--page-2);
  border: 1px solid var(--line);
}

.tabs button {
  appearance: none;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-2);
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.tabs button:hover {
  color: var(--ink);
}

.tabs button[aria-selected="true"] {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(11, 15, 13, 0.07), 0 6px 16px rgba(11, 15, 13, 0.07);
}

.showcase {
  margin-top: 24px;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(24px, 4vw, 52px);
  align-items: center;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-1);
}

.showcase[hidden] {
  display: none;
}

.showcase-body h3 {
  margin: 0;
  font-size: clamp(23px, 2.5vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.03em;
  font-weight: 750;
}

.showcase-body h3 .sub-line {
  display: block;
  font-size: clamp(17px, 1.8vw, 21px);
  color: var(--ink-2);
  font-weight: 600;
  margin-top: 6px;
  letter-spacing: -0.02em;
}

.showcase-body > p {
  margin: 16px 0 0;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.75;
}

ul.ticks {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

ul.ticks li {
  position: relative;
  padding-left: 26px;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.7;
}

ul.ticks li b {
  color: var(--ink);
  font-weight: 650;
}

ul.ticks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 7px;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--brand-deep);
  border-bottom: 2px solid var(--brand-deep);
  transform: rotate(-45deg);
}

.showcase-media {
  border-radius: var(--radius);
  background: linear-gradient(160deg, #f0fbf4 0%, #fbfefc 55%, #eaf9f0 100%);
  padding: clamp(12px, 2vw, 22px);
  border: 1px solid var(--panel-line);
}

.showcase-media img {
  border-radius: 10px;
  border: 1px solid rgba(11, 15, 13, 0.08);
  box-shadow: 0 18px 44px rgba(11, 15, 13, 0.14);
}

/* ---------- 能力网格 ---------- */

.bento {
  margin-top: 20px;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bento .card {
  position: relative;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.bento .card:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.card .tile {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--brand-wash);
  border: 1px solid var(--panel-line);
  color: var(--brand-deep);
}

.card .tile svg {
  width: 20px;
  height: 20px;
}

.card h3 {
  margin: 16px 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.7;
}

/* ---------- 截图两栏 ---------- */

.shots {
  margin-top: 40px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.shots figure {
  margin: 0;
}

.shots img {
  border-radius: var(--radius);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-1);
}

.shots figcaption {
  margin-top: 14px;
  font-size: 14px;
  color: var(--ink-3);
}

.shots figcaption b {
  color: var(--ink);
  font-weight: 650;
}

/* ---------- 安全区 ---------- */

.sec-grid {
  margin-top: 36px;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.sec-grid article {
  padding: 24px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid #e6f5eb;
  box-shadow: 0 1px 2px rgba(10, 122, 51, 0.04);
}

.sec-grid .tile {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--brand-deep);
  background: var(--brand-wash);
}

.sec-grid .tile svg {
  width: 18px;
  height: 18px;
}

.sec-grid h3 {
  margin: 14px 0 6px;
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.sec-grid p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}

/* ---------- MCP ---------- */

.mcp-split {
  margin-top: 40px;
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.mcp-split h3 {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.code-cap {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--ink-3);
}

pre.code {
  margin: 0;
  padding: 22px;
  background: var(--code-bg);
  color: #d8e4dd;
  border-radius: var(--radius);
  font: 13px/1.75 var(--mono);
  overflow: auto;
  box-shadow: var(--shadow-1);
}

pre.code .k {
  color: var(--brand-mint);
}

pre.code .s {
  color: #ffd479;
}

code.inline {
  font: 0.9em var(--mono);
  background: var(--brand-wash);
  border: 1px solid var(--panel-line);
  border-radius: 5px;
  padding: 1px 6px;
  color: #084d22;
  white-space: nowrap;
}

/* 卡片里宽度不够，令牌串要能折行，否则会把卡片撑破 */
.sec-grid code.inline,
.faq code.inline,
.card code.inline {
  white-space: normal;
  overflow-wrap: anywhere;
}

/* 弹窗截图放大到通栏，缩小成侧栏尺寸后界面细节就糊了 */
.mcp-wide {
  margin: 48px 0 0;
}

.mcp-wide img {
  border-radius: var(--radius);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-2);
}

.mcp-wide figcaption {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--ink-3);
  text-align: center;
}

/* ---------- 互操作条 ---------- */

.compat {
  background: var(--page-2);
  border-block: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.compat::before {
  content: "";
  position: absolute;
  inset: -40% -10%;
  background: repeating-conic-gradient(
    from 0deg at 50% 50%,
    rgba(11, 15, 13, 0.045) 0deg 0.08deg,
    transparent 0.08deg 5deg
  );
  -webkit-mask-image: radial-gradient(closest-side, #000 10%, transparent 78%);
  mask-image: radial-gradient(closest-side, #000 10%, transparent 78%);
  pointer-events: none;
}

.compat .wrap {
  position: relative;
}

.logos {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.logo-card {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 16px;
  border-radius: 13px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 1px 2px rgba(11, 15, 13, 0.04);
  color: var(--ink);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.logo-card span.tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--brand-deep);
  background: var(--brand-wash);
  border: 1px solid var(--panel-line);
  border-radius: 999px;
  padding: 1px 7px;
  letter-spacing: 0;
}

.logo-card svg {
  width: 18px;
  height: 18px;
  color: var(--ink-3);
}

/* ---------- 下载 ---------- */

.dl {
  margin-top: 40px;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.dl .card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.22s ease, box-shadow 0.22s ease;
}

.dl .card:hover {
  border-color: var(--line-2);
  box-shadow: var(--shadow-2);
}

.dl .card.is-current {
  border-color: var(--brand-mint);
  background: linear-gradient(180deg, #f4fdf7, #ffffff 70%);
}

.dl .os {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.dl .os svg {
  width: 22px;
  height: 22px;
  color: var(--ink);
}

.dl h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.dl .now {
  margin-left: auto;
  font-size: 11.5px;
  font-weight: 650;
  color: var(--brand-deep);
  background: var(--brand-wash);
  border: 1px solid var(--brand-mint);
  border-radius: 999px;
  padding: 2px 9px;
  display: none;
}

.dl .card.is-current .now {
  display: inline-block;
}

.dl .req {
  margin: 0;
  font-size: 14px;
  color: var(--ink-2);
}

.dl .file {
  margin: 12px 0 2px;
  font: 12px/1.6 var(--mono);
  color: var(--ink-2);
  word-break: break-all;
}

.dl .size {
  margin: 0 0 20px;
  font-size: 13px;
  color: var(--ink-3);
}

.dl .btn {
  margin-top: auto;
}

/* Linux 有两个产物，并排放一行；拆成两行会把三张卡片的高度差拉大 */
.dl .pair {
  margin-top: auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 8px;
}

.dl .pair .btn {
  margin-top: 0;
  padding-inline: 10px;
  font-size: 13.5px;
}

.note {
  margin: 26px auto 0;
  max-width: 74ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-3);
  text-align: center;
}

/* ---------- FAQ ---------- */

.faq {
  margin: 40px auto 0;
  max-width: 860px;
  display: grid;
  gap: 10px;
}

.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 2px 22px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq details:hover {
  border-color: var(--line-2);
}

.faq details[open] {
  border-color: var(--line-2);
  box-shadow: var(--shadow-1);
}

.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 0;
  font-weight: 650;
  font-size: 16px;
  letter-spacing: -0.01em;
}

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

.faq summary::after {
  content: "";
  margin-left: auto;
  flex: none;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--ink-3);
  border-bottom: 2px solid var(--ink-3);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.faq details[open] summary::after {
  transform: rotate(-135deg) translateY(-2px);
  border-color: var(--brand-deep);
}

.faq details > div {
  padding: 0 0 20px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.75;
}

.faq details > div p {
  margin: 0 0 10px;
}

.faq details > div p:last-child {
  margin-bottom: 0;
}

/* ---------- 结尾行动区 ---------- */

.final-cta {
  text-align: center;
  padding: clamp(56px, 7vw, 96px) 0 clamp(72px, 8vw, 110px);
}

.final-cta h2 {
  margin: 0 auto;
  max-width: 22ch;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.04em;
  font-weight: 800;
  text-wrap: balance;
}

.final-cta p {
  margin: 18px auto 0;
  max-width: 34em;
  color: var(--ink-2);
  font-size: 16.5px;
  text-wrap: pretty;
}

.final-cta .cta {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

/* ---------- 页脚 ---------- */

footer.site {
  position: relative;
  background: #0b0e0d;
  color: rgba(255, 255, 255, 0.62);
  overflow: hidden;
}

footer.site .wrap {
  position: relative;
  z-index: 1;
  padding-top: 60px;
}

.foot-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: 1.6fr repeat(3, minmax(0, 1fr));
}

.foot-brand .brand {
  color: #fff;
  font-size: 19px;
}

.foot-brand p {
  margin: 14px 0 0;
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.5);
}

.foot-grid h3 {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
}

.foot-grid ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.foot-grid a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.foot-grid a:hover {
  color: #fff;
  text-decoration: none;
}

.legal {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.42);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

/* 巨型描边水印：整字完整落在页脚内，留一点下沿呼吸空间，不做裁切 */
.foot-mark {
  position: relative;
  z-index: 0;
  margin: 34px 0 0;
  padding-bottom: 26px;
  text-align: center;
  /* 用 vw 而不是 vh，字号只跟容器宽度走，越窄越不会横向溢出 */
  font-size: clamp(52px, 16.2vw, 228px);
  /* 大写字母没有下伸部，1 倍行高就恰好框住字形，不会被换行盒切到 */
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.045em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.12);
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
}

/* ---------- 进场动画 ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.js .reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */

@media (max-width: 1040px) {
  .bento,
  .sec-grid,
  .dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .showcase-media {
    order: -1;
  }
}

@media (max-width: 900px) {
  .intro {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .intro p {
    max-width: 62ch;
  }

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

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

@media (max-width: 820px) {
  nav.main,
  .head-actions .icon-btn {
    display: none;
  }

  .nav-toggle {
    display: block;
    margin-left: 8px;
  }

  /* 收掉图标后，下载按钮接替 nav 把右侧顶住：品牌 · 下载 · ☰ */
  .head-actions {
    margin-left: auto;
  }

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

@media (max-width: 640px) {
  .wrap {
    padding-inline: 20px;
  }

  .bento,
  .sec-grid,
  .dl {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 48px;
  }

  .hero .cta,
  .final-cta .cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero .cta .btn,
  .final-cta .cta .btn {
    width: 100%;
  }

  /* 窄屏导语会掉到 4-5 行，balance 把各行拉平，避免末行只剩两三个字 */
  .hero .lede {
    text-wrap: balance;
  }

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

  /* 四个分组按钮必须在 360px 内排成一行，靠内边距和字号压下来，不做横向滚动 */
  .tabs {
    gap: 0;
    padding: 3px;
    width: 100%;
  }

  .tabs button {
    flex: 1 1 auto;
    padding: 8px 6px;
    font-size: 13px;
    white-space: nowrap;
  }
}

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

  *,
  .js .reveal {
    transition: none !important;
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}