/* ============================================================
   sections.css — 内容分区
   位置 / 模式立方体 / 能力矩阵 / 流程 / 画布 / 数字 / 下载
   ============================================================ */

/* ── 01 定位 ──────────────────────────────────────────────── */

.position {
  position: relative;
  z-index: 3;
  padding-top: clamp(84px, 11vw, 146px);
  border-top: 1.5px solid var(--ink);
  background: var(--paper);
}

.position-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: clamp(16px, 2vw, 32px);
  align-items: start;
}

.position-head {
  grid-column: 1 / 8;
}

.position-head .display {
  margin-top: 22px;
  /* 第二行 9 个汉字，按栏宽收字号，避免把“台。”挤成孤行 */
  font-size: clamp(34px, 5.2vw, 70px);
}

.position-body {
  grid-column: 8 / 12;
  padding-top: clamp(18px, 5vw, 92px);
}

.position-body p + p {
  margin-top: 18px;
}

.position-body > p:not(.lede) {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

.position-list {
  margin-top: 30px;
  border-top: 1.5px solid var(--ink);
}

.position-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}

.position-list span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--red);
  padding-top: 2px;
}

.position-margin {
  grid-column: 12 / 13;
  justify-self: end;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding-top: 18px;
  will-change: transform;
}

.margin-vertical {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.32em;
  line-height: 1.6;
  color: var(--muted);
  text-transform: uppercase;
}

.margin-stamp {
  display: block;
  padding: 9px 7px;
  border: 1.5px solid var(--red);
  color: var(--red);
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  transform: rotate(6deg);
}

/* ── 跑马灯 ───────────────────────────────────────────────── */

.marquee {
  overflow: hidden;
  border-top: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  user-select: none;
}

.marquee--ink {
  margin-top: clamp(64px, 9vw, 118px);
  background: var(--ink);
  color: var(--paper);
  padding: 16px 0;
}

.marquee--paper {
  margin-top: clamp(56px, 7vw, 92px);
  background: var(--paper);
  color: var(--ink);
  padding: 18px 0;
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: clamp(22px, 3vw, 46px);
  width: max-content;
  font-size: clamp(20px, 2.5vw, 36px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
  white-space: nowrap;
  animation: marquee 34s linear infinite;
}

.marquee-track i {
  font-style: normal;
  font-size: 0.5em;
  color: var(--red);
}

.marquee--paper .marquee-track {
  animation-direction: reverse;
  animation-duration: 40s;
}

.marquee:hover .marquee-track {
  animation-play-state: paused;
}

/* ── 02 模式与立方体 ──────────────────────────────────────── */

.modes {
  position: relative;
  padding: clamp(88px, 11vw, 150px) 0 clamp(88px, 10vw, 140px);
  border-top: 1.5px solid var(--ink);
  background: var(--paper);
}

.section-head {
  max-width: 900px;
}

.section-head .display {
  margin-top: 20px;
}

.section-lead {
  margin-top: 24px;
  max-width: 56ch;
  font-size: clamp(14.5px, 1.3vw, 16.5px);
  line-height: 1.85;
  color: var(--ink-2);
}

.section-head--split .display {
  /* 左栏只有约 600px，按 9 个字一行核算字号，避免出现孤字行 */
  font-size: clamp(32px, 4.9vw, 72px);
}

.section-head--split {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(28px, 5vw, 80px);
  align-items: end;
}

.modes-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(36px, 5vw, 80px);
  align-items: center;
  margin-top: clamp(44px, 6vw, 72px);
}

.modes-panel {
  min-width: 0;
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1.5px solid var(--ink);
  border-left: 1.5px solid var(--ink);
}

.mode-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 12px;
  min-height: 52px;
  border-right: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  background: var(--paper-bright);
  font-size: 13.5px;
  font-weight: 700;
  text-align: left;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.mode-tab span {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--red);
  padding-top: 1px;
}

.mode-tab:hover {
  background: var(--paper-2);
}

.mode-tab.is-active {
  background: var(--ink);
  color: var(--paper);
}

.mode-tab.is-active span {
  color: var(--paper);
  opacity: 0.55;
}

.mode-detail {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1.5px solid var(--ink);
}

.mode-panel {
  display: grid;
  gap: 12px;
}

.mode-panel[hidden] {
  display: none;
}

.mode-code {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--red);
}

.mode-panel h3 {
  font-size: clamp(26px, 2.8vw, 38px);
}

.mode-panel p {
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

.mode-panel dl {
  margin-top: 6px;
  border-top: 1px solid var(--line);
}

.mode-panel dl > div {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 14px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.65;
}

.mode-panel dt {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
  padding-top: 3px;
}

.mode-panel dd {
  color: var(--ink-2);
}

/* 立方体 */

.cube-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 560px;
  padding: 40px 0 70px;
  overflow: visible;
  --cube: clamp(204px, 22vw, 292px);
  --half: calc(var(--cube) / 2);
}

.cube-stage::before {
  content: "六";
  position: absolute;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%);
  font-family: var(--font-serif);
  font-size: clamp(190px, 26vw, 330px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(21, 20, 16, 0.16);
  pointer-events: none;
  user-select: none;
}

.cube-rig {
  position: relative;
  width: var(--cube);
  height: var(--cube);
  perspective: 1400px;
  z-index: 1;
}

.cube-rig::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(-1 * var(--cube) * 0.32);
  width: calc(var(--cube) * 1.15);
  height: 1.5px;
  background: var(--line-strong);
  transform: translateX(-50%);
}

.cube {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transform: rotateX(-14deg) rotateY(-26deg);
  transition: transform 780ms var(--ease);
  cursor: grab;
  touch-action: none;
  outline: none;
}

.cube.is-dragging {
  cursor: grabbing;
  transition: none;
}

.cube:focus-visible {
  outline: 2px dashed var(--red);
  outline-offset: 14px;
}

.cube-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  padding: 20px;
  border: 2px solid var(--ink);
  background: var(--paper-bright);
  color: var(--ink);
  text-align: left;
  backface-visibility: hidden;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.cube-face::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid var(--line);
  pointer-events: none;
}

.cube-face:hover {
  background: var(--paper-2);
}

.cube-face .cube-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--red);
}

.cube-face strong {
  font-size: clamp(28px, 2.8vw, 38px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
}

.cube-face small {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 8px;
  width: 100%;
}

.cube-face.is-active {
  outline: 3px solid var(--red);
  outline-offset: -9px;
}

.cube-face--front {
  transform: rotateY(0deg) translateZ(var(--half));
}

.cube-face--right {
  transform: rotateY(90deg) translateZ(var(--half));
  background: var(--paper-2);
}

.cube-face--back {
  transform: rotateY(180deg) translateZ(var(--half));
}

.cube-face--left {
  transform: rotateY(-90deg) translateZ(var(--half));
  background: var(--blue);
  color: var(--paper-bright);
}

.cube-face--left small,
.cube-face--left .cube-num {
  color: rgba(240, 234, 220, 0.72);
}

.cube-face--left::before {
  border-color: rgba(240, 234, 220, 0.28);
}

.cube-face--top {
  transform: rotateX(90deg) translateZ(var(--half));
  background: var(--red);
  color: var(--paper-bright);
}

.cube-face--top small,
.cube-face--top .cube-num {
  color: rgba(240, 234, 220, 0.78);
}

.cube-face--top::before {
  border-color: rgba(240, 234, 220, 0.3);
}

.cube-face--bottom {
  transform: rotateX(-90deg) translateZ(var(--half));
  background: var(--ink);
  color: var(--paper);
}

.cube-face--bottom small,
.cube-face--bottom .cube-num {
  color: rgba(240, 234, 220, 0.66);
}

.cube-face--bottom::before {
  border-color: rgba(240, 234, 220, 0.24);
}

.cube-hint {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: min(430px, 100%);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 10px;
  border-top: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
  z-index: 2;
}

.cube-readout {
  color: var(--red);
  white-space: nowrap;
}

/* ── 03 能力矩阵 ──────────────────────────────────────────── */

.capabilities {
  padding: clamp(86px, 11vw, 150px) 0 clamp(80px, 10vw, 130px);
  border-top: 1.5px solid var(--ink);
  background: var(--paper);
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 1.4vw, 20px);
  margin-top: clamp(40px, 5vw, 62px);
}

.cap {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 238px;
  padding: clamp(20px, 2.2vw, 28px);
  border: 1.5px solid var(--ink);
  background: var(--paper-bright);
  transition:
    transform 380ms var(--ease),
    box-shadow 380ms var(--ease);
}

.cap:hover {
  transform: translate(-4px, -4px);
  box-shadow: 8px 8px 0 var(--ink);
}

.cap-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.cap-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  padding: 2px 6px;
  border: 1px solid currentColor;
  opacity: 0.65;
}

.cap-icon {
  width: 27px;
  height: 27px;
  flex: 0 0 auto;
  opacity: 0.9;
}

.cap h3 {
  font-size: clamp(20px, 2.1vw, 27px);
  letter-spacing: -0.03em;
  margin-top: 2px;
}

.cap p {
  font-size: 13.4px;
  line-height: 1.82;
  color: var(--ink-2);
  max-width: 52ch;
}

.cap-points {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  max-width: 52ch;
}

.cap-points li {
  position: relative;
  padding-left: 18px;
  font-size: 12.8px;
  line-height: 1.7;
  color: var(--ink-2);
}

.cap-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--red);
}

.cap-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 8px;
}

.cap-tags li {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  padding: 3px 7px;
  border: 1px solid currentColor;
  opacity: 0.62;
  line-height: 1.5;
}

.cap--editor {
  grid-column: span 7;
  grid-row: span 2;
  min-height: 430px;
  justify-content: flex-start;
}

.cap--agents {
  grid-column: span 5;
  background: var(--blue);
  color: var(--paper-bright);
}

.cap--agents p {
  color: rgba(240, 234, 220, 0.78);
}

.cap--canvas {
  grid-column: span 5;
}

.cap--browser {
  grid-column: span 4;
}

.cap--computer {
  grid-column: span 4;
}

.cap--terminal {
  grid-column: span 4;
}

.cap--context {
  grid-column: span 5;
}

.cap--mcp {
  grid-column: span 3;
  background: var(--ink);
  color: var(--paper);
}

.cap--mcp p {
  color: rgba(240, 234, 220, 0.72);
}

.cap--mcp:hover {
  box-shadow: 8px 8px 0 var(--red);
}

.cap--security {
  grid-column: span 4;
}

.cap--red {
  background: var(--red);
  color: var(--paper-bright);
}

.cap--red p {
  color: rgba(255, 245, 233, 0.86);
}

.cap--red:hover {
  box-shadow: 8px 8px 0 var(--ink);
}

/* 能力卡内的示意图形 */

.cap-figure {
  margin-top: 18px;
  border: 1.5px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.9;
  overflow: hidden;
}

.cap-figure-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 5px 9px;
  background: var(--ink);
  color: var(--paper);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.cap-diff-row {
  display: flex;
  gap: 8px;
  padding: 1px 9px;
}

.cap-diff-row em {
  font-style: normal;
  width: 8px;
  color: var(--red);
}

.cap-diff-row.is-add {
  background: rgba(29, 58, 143, 0.08);
}

.cap-diff-row.is-del {
  opacity: 0.55;
}

.cap-diff-row.is-del em {
  color: var(--muted);
}

.cap-agents {
  display: grid;
  gap: 6px;
  margin-top: 18px;
}

.cap-agents span {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 9px;
  border: 1px solid rgba(240, 234, 220, 0.34);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  color: rgba(240, 234, 220, 0.82);
}

.cap-agents span::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--paper-bright);
  flex: 0 0 auto;
}

.cap-agents span.is-run::before {
  background: var(--red);
}

/* ── 04 流程 ──────────────────────────────────────────────── */

.workflow {
  position: relative;
  height: 320vh;
  border-top: 1.5px solid var(--ink);
  background: var(--paper-2);
}

.workflow-sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  min-height: 660px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--header-h) + 18px) 0 20px;
  overflow: hidden;
}

.workflow-head {
  display: flex;
  align-items: flex-end;
  gap: clamp(20px, 3vw, 40px);
  margin-bottom: clamp(26px, 4vh, 46px);
}

.workflow-head .display {
  font-size: clamp(28px, 3.6vw, 50px);
  /* 让整句留在一行，避免把“动。”拆成孤字 */
  max-width: none;
  margin-top: 14px;
}

.workflow-head .index {
  position: absolute;
  top: calc(var(--header-h) + 20px);
}

.workflow-meter {
  margin-left: auto;
  width: min(240px, 20vw);
  height: 8px;
  border: 1.5px solid var(--ink);
  background: var(--paper-bright);
  flex: 0 0 auto;
}

.workflow-meter-fill {
  display: block;
  height: 100%;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.workflow-track {
  display: flex;
  gap: clamp(14px, 1.6vw, 22px);
  width: max-content;
  padding-inline: var(--gutter);
  transform: translate3d(calc(var(--shift, 0px) * -1), 0, 0);
  will-change: transform;
}

.step {
  position: relative;
  display: flex;
  flex-direction: column;
  width: clamp(300px, 36vw, 480px);
  height: clamp(320px, 38vh, 372px);
  padding: clamp(22px, 2.4vw, 32px);
  border: 1.5px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(21, 20, 16, 0.9);
  flex: 0 0 auto;
}

.step-num {
  font-family: var(--font-mono);
  font-size: clamp(46px, 5vw, 68px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.06em;
  opacity: 0.28;
}

.step h3 {
  margin-top: 18px;
  font-size: clamp(23px, 2.4vw, 31px);
}

.step p {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.85;
  opacity: 0.86;
}

.step-meta {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  opacity: 0.62;
}

.step--paper {
  background: var(--paper-bright);
  color: var(--ink);
}

.step--ink {
  background: var(--ink);
  color: var(--paper);
}

.step--red {
  background: var(--red);
  color: var(--paper-bright);
}

.step--red .step-num,
.step--ink .step-num {
  opacity: 0.42;
}

.workflow-foot {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: clamp(20px, 3vh, 34px);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* ── 05 任务画布 ──────────────────────────────────────────── */

.workshop {
  padding: clamp(86px, 11vw, 148px) 0;
  border-top: 1.5px solid var(--ink);
  background: var(--paper);
}

.workshop-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: clamp(34px, 5vw, 80px);
  align-items: start;
}

.workshop-copy .display {
  margin-top: 18px;
  /* 第二行 9 个汉字（含句号，句号不能出现在行首），按栏宽收字号 */
  font-size: clamp(30px, 3.7vw, 52px);
}

.workshop-copy .lede {
  margin-top: 24px;
  max-width: 44ch;
}

.workshop-list {
  margin-top: 28px;
  border-top: 1.5px solid var(--ink);
}

.workshop-list li {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

.workshop-list span {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--red);
  padding-top: 3px;
}

.workshop-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.workshop-readout {
  margin-top: 22px;
  min-height: 56px;
  padding: 12px 14px;
  border-left: 4px solid var(--red);
  background: var(--paper-2);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

.workshop-canvas-wrap {
  position: relative;
  border: 1.5px solid var(--ink);
  background: var(--paper-2);
  box-shadow: 12px 12px 0 var(--ink);
  aspect-ratio: 16 / 12;
  min-height: 440px;
}

.workshop-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

.workshop-canvas.is-grabbing {
  cursor: grabbing;
}

.canvas-hint {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 3px 7px;
  border: 1px solid var(--line-strong);
  background: var(--paper-bright);
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
  pointer-events: none;
}

.canvas-corner {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--line-strong);
  pointer-events: none;
}

.canvas-corner--tl {
  top: 7px;
  left: 8px;
}

.canvas-corner--br {
  bottom: 7px;
  right: 8px;
}

/* ── 数字 ─────────────────────────────────────────────────── */

.scale {
  border-top: 1.5px solid var(--ink);
  background: var(--paper-3);
  padding: clamp(34px, 5vw, 56px) 0 clamp(28px, 3.4vw, 38px);
}

.scale-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  padding-inline: var(--gutter);
  border-top: 1.5px solid var(--ink);
  border-bottom: 1px solid var(--line-strong);
}

.scale-item {
  padding: 20px clamp(10px, 1.6vw, 22px) 18px;
  border-right: 1px solid var(--line-strong);
  will-change: transform;
}

.scale-item:last-child {
  border-right: 0;
}

.scale-item strong {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(38px, 6vw, 86px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.07em;
}

.scale-item span {
  display: block;
  margin-top: 8px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.scale-note {
  padding: 16px var(--gutter) 0;
  max-width: 92ch;
  font-family: var(--font-mono);
  font-size: 9.5px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ── 06 下载 ──────────────────────────────────────────────── */

.download {
  position: relative;
  padding-top: clamp(78px, 10vw, 136px);
  background: var(--ink);
  color: var(--paper);
}

.download-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(400px, 0.82fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}

.download-title {
  margin-top: 20px;
  font-size: clamp(56px, 7.8vw, 118px);
  /* 0.82 会让“拆开”压到上一行，这里留出笔画空间 */
  line-height: 1;
  letter-spacing: -0.06em;
}

.download-intro > p {
  margin-top: 30px;
  max-width: 42ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(240, 234, 220, 0.7);
}

.download-specs {
  margin-top: 36px;
  max-width: 560px;
  border-top: 1px solid rgba(240, 234, 220, 0.26);
}

.download-specs li {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 18px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(240, 234, 220, 0.16);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(240, 234, 220, 0.74);
}

.download-specs span {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: rgba(240, 234, 220, 0.45);
  padding-top: 3px;
}

.download-card {
  position: relative;
  padding: clamp(20px, 2.4vw, 30px);
  background: var(--paper);
  color: var(--ink);
  border: 1.5px solid var(--paper);
  box-shadow: 14px 14px 0 var(--red);
}

.download-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1.5px solid var(--ink);
}

.dl-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
  line-height: 1.5;
}

.dl-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--ochre);
  flex: 0 0 auto;
}

.dl-badge.is-live {
  color: var(--ink);
}

.dl-badge.is-live::before {
  background: var(--red);
}

.dl-badge.is-fallback::before {
  background: var(--ochre);
}

.dl-badge.is-error {
  color: var(--red);
}

.dl-badge.is-error::before {
  background: var(--red);
}

.dl-platform {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--muted);
  white-space: nowrap;
}

.dl-version {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0 10px;
}

.dl-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.dl-version strong {
  font-family: var(--font-mono);
  font-size: clamp(40px, 5.2vw, 62px);
  font-weight: 700;
  letter-spacing: -0.07em;
  line-height: 1;
}

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

.dl-facts > div {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 11.5px;
  line-height: 1.6;
}

.dl-facts > div:last-child {
  border-bottom: 0;
}

.dl-facts dt {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding-top: 3px;
}

.dl-facts dd {
  min-width: 0;
  overflow-wrap: anywhere;
}

.dl-actions button,
.dl-actions a {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line-strong);
  padding: 0 0 1px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.dl-actions button:hover,
.dl-actions a:hover {
  color: var(--red);
  border-color: var(--red);
}

.dl-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 16px;
}

.dl-note {
  margin-top: 16px;
  padding-left: 10px;
  border-left: 3px solid var(--red);
  font-size: 11.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

.dl-fineprint {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--muted);
}

/* ── 窄幅布局 ─────────────────────────────────────────────── */

@media (max-width: 1180px) {
  .position-head {
    grid-column: 1 / 9;
  }

  .position-body {
    grid-column: 8 / 13;
  }

  .position-margin {
    display: none;
  }

  .cap--editor {
    grid-column: span 7;
  }

  .download-grid {
    grid-template-columns: minmax(0, 1fr) minmax(380px, 0.9fr);
  }
}

@media (max-width: 980px) {
  .section-head--split {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .position-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .position-head {
    grid-column: 1 / -1;
  }

  .position-body {
    grid-column: 1 / -1;
    padding-top: 30px;
    max-width: 62ch;
  }

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

  .cube-stage {
    order: 2;
    min-height: 470px;
    --cube: clamp(190px, 42vw, 250px);
  }

  .cap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cap {
    grid-column: auto !important;
    grid-row: auto !important;
    min-height: 220px;
  }

  .cap--editor {
    grid-column: span 2 !important;
  }

  .cap--security {
    grid-column: span 2 !important;
  }

  .workflow {
    height: auto;
  }

  .workflow-sticky {
    position: relative;
    top: auto;
    height: auto;
    min-height: 0;
    padding: calc(var(--header-h) + 44px) 0 40px;
    overflow: visible;
  }

  .workflow-head {
    flex-wrap: wrap;
  }

  .workflow-head .index {
    position: static;
  }

  .workflow-meter {
    display: none;
  }

  .workflow-track {
    width: 100%;
    overflow-x: auto;
    padding-block: 6px 22px;
    transform: none !important;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .workflow-track::-webkit-scrollbar {
    display: none;
  }

  .step {
    width: min(78vw, 430px);
    height: auto;
    min-height: 340px;
    scroll-snap-align: start;
  }

  .workflow-foot {
    display: none;
  }

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

  .workshop-canvas-wrap {
    min-height: 400px;
    aspect-ratio: 16 / 11;
  }

  .scale-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .scale-item {
    border-bottom: 1px solid var(--line-strong);
  }

  .scale-item:nth-child(3n) {
    border-right: 0;
  }

  .scale-item:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

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

  .download-card {
    max-width: 620px;
  }
}

@media (max-width: 720px) {
  .position-head .display {
    font-size: clamp(34px, 9vw, 54px);
  }

  .mode-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cube-stage {
    min-height: 440px;
    padding-bottom: 64px;
  }

  .cube-stage::before {
    font-size: 210px;
  }

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

  .cap,
  .cap--editor,
  .cap--security {
    grid-column: span 1 !important;
    min-height: 0;
  }

  .cap--editor {
    min-height: 380px;
  }

  .scale-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scale-item {
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
  }

  .scale-item:nth-child(2n) {
    border-right: 0;
  }

  .scale-item:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--line-strong);
  }

  .scale-item:last-child {
    border-bottom: 0;
  }

  .workshop-canvas-wrap {
    min-height: 360px;
    aspect-ratio: 4 / 3;
  }

  .download-title {
    font-size: clamp(56px, 16vw, 92px);
  }

  .download-card {
    box-shadow: 8px 8px 0 var(--red);
  }

  .dl-version {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .dl-version strong {
    font-size: clamp(38px, 12vw, 54px);
  }
}