/* ================= 业务与工具 / page-products ================= */
.page-products {
  --pp-gap: clamp(20px, 3.2vw, 44px);
  --pp-pad: clamp(16px, 2.4vw, 28px);
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-wrap: break-word;
}

.page-products h1,
.page-products h2,
.page-products h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-products h1 {
  margin-top: 14px;
  font-size: clamp(32px, 5.4vw, 62px);
  letter-spacing: 0.004em;
}

.page-products h2 {
  font-size: clamp(24px, 3.4vw, 40px);
}

.page-products h3 {
  font-size: clamp(17px, 2.1vw, 21px);
}

.page-products p {
  margin: 0;
}

.page-products a {
  color: var(--amber);
}

.page-products a:focus-visible,
.page-products summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  padding: clamp(24px, 4vw, 40px) 0 clamp(38px, 6vw, 76px);
  background:
    radial-gradient(110% 85% at 88% -12%, rgba(33, 26, 60, 0.9), transparent 60%),
    linear-gradient(176deg, #072030 0%, var(--ink) 78%);
  border-bottom: 1px solid var(--line);
}

.page-products .pp-hero__grid {
  display: grid;
  gap: var(--pp-gap);
  margin-top: clamp(22px, 3.6vw, 40px);
}

.page-products .pp-hero__lede {
  max-width: 56ch;
  margin-top: clamp(16px, 2.4vw, 24px);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-products .pp-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(16px, 3vw, 40px);
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-products .pp-stats > div {
  padding-left: 12px;
  border-left: 1px solid var(--amber-dim);
}

.page-products .pp-stats dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-products .pp-stats dd {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 2.8vw, 30px);
  line-height: 1.1;
  color: var(--amber);
}

.page-products .pp-stats dd .unit {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--steel);
}

.page-products .pp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 36px);
}

/* 工具索引卡 */
.page-products .pp-index {
  padding: var(--pp-pad);
  background: linear-gradient(158deg, rgba(10, 44, 58, 0.95), rgba(6, 24, 38, 0.94));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.38);
}

.page-products .pp-index__head {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-products .pp-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-index__link {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 2px 12px;
  align-items: baseline;
  padding: 13px 8px;
  border-bottom: 1px dashed var(--line);
  text-decoration: none;
  color: inherit;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-products .pp-index__link:hover {
  background: rgba(243, 179, 61, 0.08);
  border-bottom-color: var(--amber-dim);
}

.page-products .pp-index__code {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-products .pp-index__name {
  grid-column: 2;
  grid-row: 1;
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
}

.page-products .pp-index__note {
  grid-column: 2;
  grid-row: 2;
  font-size: 13px;
  line-height: 1.55;
  color: var(--steel);
}

.page-products .pp-index__foot {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--steel);
}

/* ---------- 主工作区 ---------- */
.page-products .pp-work__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-products .pp-content {
  display: grid;
  gap: clamp(40px, 6vw, 84px);
  min-width: 0;
}

.page-products .pp-block {
  min-width: 0;
}

.page-products .pp-block__head {
  max-width: 66ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-products .pp-block__lede {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

/* 左侧路径栏 */
.page-products .pp-rail__label {
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-products .pp-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pp-rail__list a {
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-decoration: none;
  color: var(--mist);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-products .pp-rail__list a:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.page-products .pp-rail__foot {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--steel);
}

/* 三类能力 */
.page-products .ability-grid {
  display: grid;
  gap: 14px;
}

.page-products .ability-card {
  position: relative;
  padding: var(--pp-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(10, 44, 58, 0.92), rgba(6, 24, 38, 0.96));
  overflow: hidden;
}

.page-products .ability-card:nth-child(2) {
  background: linear-gradient(165deg, rgba(33, 26, 60, 0.92), rgba(6, 24, 38, 0.96));
}

.page-products .ability-card:nth-child(3) {
  background: linear-gradient(165deg, rgba(59, 22, 38, 0.9), rgba(6, 24, 38, 0.96));
}

.page-products .ability-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--amber), transparent 78%);
}

.page-products .ability-card__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-products .ability-card h3 {
  margin-top: 10px;
}

.page-products .ability-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-products .ability-card ul {
  margin: 12px 0 0;
  padding-left: 1.05em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--steel);
}

.page-products .ability-card li::marker {
  color: var(--amber);
}

/* 图片 */
.page-products .pp-figure {
  margin: 0 0 clamp(20px, 3vw, 32px);
}

.page-products .pp-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.page-products .pp-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--steel);
}

/* 工具抽屉 */
.page-products .tool-list {
  display: grid;
  gap: 12px;
}

.page-products .tool-drawer {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(10, 44, 58, 0.5), rgba(6, 24, 38, 0.86));
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-products .tool-drawer:hover {
  border-color: var(--line-strong);
}

.page-products .tool-drawer[open] {
  border-color: rgba(243, 179, 61, 0.5);
  box-shadow: 0 0 0 1px rgba(243, 179, 61, 0.14);
}

.page-products .tool-drawer .drawer__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 16px var(--pp-pad);
  cursor: pointer;
  list-style: none;
}

.page-products .tool-drawer .drawer__summary::-webkit-details-marker {
  display: none;
}

.page-products .tool-drawer .drawer__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--amber);
}

.page-products .tool-drawer[open] .drawer__summary::after {
  content: "–";
}

.page-products .tool-drawer .drawer__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .tool-drawer__name {
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--mist);
}

.page-products .tool-drawer__hint {
  flex-basis: 100%;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

.page-products .tool-drawer .drawer__body {
  padding: 16px var(--pp-pad) var(--pp-pad);
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .tool-drawer__facts {
  display: grid;
  gap: 12px;
  margin: 0 0 16px;
}

.page-products .tool-drawer__facts dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-products .tool-drawer__facts dd {
  margin: 3px 0 0;
}

.page-products .tool-drawer__steps {
  margin: 0;
  padding-left: 1.35em;
}

.page-products .tool-drawer__steps li {
  margin-bottom: 6px;
}

.page-products .tool-drawer__steps li::marker {
  font-family: var(--font-mono);
  color: var(--amber);
}

/* 适用场景 */
.page-products .scene-list {
  border-top: 1px solid var(--line-strong);
}

.page-products .scene-row {
  display: grid;
  gap: 6px 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .scene-row__key {
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
}

.page-products .scene-row__mean,
.page-products .scene-row__out {
  font-size: 14px;
  line-height: 1.65;
}

.page-products .scene-row__mean {
  color: var(--steel);
}

.page-products .scene-row__out {
  color: var(--amber);
}

/* ---------- 使用流程 ---------- */
.page-products .pp-flow {
  padding: clamp(40px, 6vw, 84px) 0;
  background:
    radial-gradient(90% 70% at 10% 0%, rgba(33, 26, 60, 0.85), transparent 62%),
    linear-gradient(180deg, rgba(33, 26, 60, 0.55), rgba(6, 24, 38, 0.96));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .flow-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-products .flow-step {
  padding: 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
  border-radius: var(--radius);
  background: rgba(6, 24, 38, 0.6);
}

.page-products .flow-step__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-products .flow-step h3 {
  margin-top: 8px;
  font-size: 16px;
}

.page-products .flow-step p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 资料库 ---------- */
.page-products .pp-library {
  padding: clamp(40px, 6vw, 84px) 0;
}

.page-products .lib-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-products .lib-visual {
  min-width: 0;
}

.page-products .lib-body {
  min-width: 0;
}

.page-products .lib-cats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 4px;
}

.page-products .lib-cat {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 44, 58, 0.45);
}

.page-products .lib-cat h3 {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .lib-cat p {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--steel);
}

.page-products .lib-rhythm {
  margin-top: 24px;
  padding: 16px 18px;
  border-left: 2px solid var(--status);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(47, 163, 138, 0.08);
}

.page-products .lib-rhythm h3 {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
}

.page-products .lib-rhythm ul {
  margin: 10px 0 0;
  padding-left: 1.15em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-products .lib-rhythm li::marker {
  color: var(--status);
}

.page-products .lib-figure {
  max-width: 280px;
  margin: 24px 0 0;
}

/* ---------- V4 状态面板 ---------- */
.page-products .pp-v4 {
  padding: clamp(40px, 6vw, 84px) 0;
  background: linear-gradient(180deg, rgba(10, 44, 58, 0.5), rgba(6, 24, 38, 0.98));
  border-top: 1px solid var(--line);
}

.page-products .v4-board {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
}

.page-products .v4-panel {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

.page-products .v4-panel text {
  font-family: var(--font-mono);
  font-size: 13px;
  fill: var(--mist);
}

.page-products .v4-panel .v4-panel__head {
  font-size: 14px;
  letter-spacing: 0.12em;
  fill: var(--amber);
}

.page-products .v4-panel .v4-panel__dim {
  font-size: 12px;
  fill: var(--steel);
}

.page-products .v4-panel .v4-panel__row {
  font-size: 13px;
  fill: var(--mist);
}

.page-products .v4-panel .v4-panel__state {
  font-size: 12px;
  fill: var(--status);
}

.page-products .v4-panel .v4-panel__foot {
  font-size: 12px;
  fill: var(--steel);
}

.page-products .v4-notes {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .v4-note {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(6, 24, 38, 0.7);
}

.page-products .v4-note__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .v4-note__val {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 服务与支持 ---------- */
.page-products .pp-support {
  padding: clamp(40px, 6vw, 84px) 0;
  background:
    radial-gradient(80% 70% at 92% 0%, rgba(59, 22, 38, 0.9), transparent 64%),
    linear-gradient(200deg, rgba(59, 22, 38, 0.42), rgba(6, 24, 38, 0.96));
  border-top: 1px solid var(--line);
}

.page-products .support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
}

.page-products .support-card {
  padding: 18px;
  border: 1px solid rgba(217, 199, 163, 0.28);
  border-radius: var(--radius);
  background: rgba(6, 24, 38, 0.55);
}

.page-products .support-card__num {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-products .support-card__num small {
  margin-left: 4px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--steel);
}

.page-products .support-card__label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--mist);
}

.page-products .support-note {
  display: grid;
  gap: 14px;
  max-width: 72ch;
  margin-top: clamp(22px, 3vw, 32px);
  font-size: 14px;
  line-height: 1.85;
  color: var(--steel);
}

.page-products .support-note a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--amber-dim);
}

.page-products .support-note a:hover {
  border-bottom-color: var(--amber);
}

/* ---------- 常见问题 ---------- */
.page-products .pp-faq {
  padding: clamp(40px, 6vw, 84px) 0 0;
}

.page-products .faq-list {
  display: grid;
  gap: 10px;
}

.page-products .faq-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(33, 26, 60, 0.5), rgba(6, 24, 38, 0.82));
  text-decoration: none;
  color: inherit;
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-products .faq-item:hover {
  border-color: var(--amber);
  transform: translateY(-2px);
}

.page-products .faq-item__q {
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
}

.page-products .faq-item__go {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
  white-space: nowrap;
}

.page-products .faq-item__a {
  flex-basis: 100%;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

/* ================= 响应式 ================= */
@media (min-width: 760px) {
  .page-products .scene-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr) minmax(0, 1.05fr);
    align-items: baseline;
  }
}

@media (min-width: 820px) {
  .page-products .ability-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .lib-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  }
}

@media (min-width: 960px) {
  .page-products .pp-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: start;
  }

  .page-products .v4-board {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
  }
}

@media (min-width: 1040px) {
  .page-products .pp-work__grid {
    grid-template-columns: 196px minmax(0, 1fr);
  }

  .page-products .pp-rail {
    position: sticky;
    top: 96px;
    padding-left: 16px;
    border-left: 1px solid var(--line-strong);
  }

  .page-products .pp-rail__list {
    flex-direction: column;
    gap: 0;
  }

  .page-products .pp-rail__list a {
    display: block;
    padding: 9px 0;
    border: 0;
    border-bottom: 1px dashed var(--line);
    border-radius: 0;
    font-size: 13px;
  }

  .page-products .pp-rail__list a:hover {
    color: var(--amber);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-index__link,
  .page-products .pp-rail__list a,
  .page-products .faq-item,
  .page-products .tool-drawer {
    transition: none;
  }

  .page-products .faq-item:hover {
    transform: none;
  }
}