/* ============ 功能中心 /features/ ============ */
.page-products {
  --fn-indent: 18px;
  --fn-row: clamp(14px, 2vw, 18px);
  color: var(--paper);
}

.page-products .crumb-row {
  padding-top: clamp(16px, 2.6vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-products .fn-hero {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
  padding-top: clamp(20px, 4vw, 46px);
  padding-bottom: clamp(26px, 4.4vw, 54px);
}

.page-products .kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lava);
}

.page-products .fn-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 6.6vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.038em;
  max-width: 20ch;
}

.page-products .fn-hero .lede {
  margin: 0;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.82;
  color: var(--mist);
}

.page-products .fn-meta {
  list-style: none;
  margin: 0;
  padding: clamp(14px, 2vw, 20px) 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 18px;
  font-family: var(--font-mono);
}

.page-products .fn-meta li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.page-products .fn-meta__k {
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-products .fn-meta__v {
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

@media (min-width: 720px) {
  .page-products .fn-meta {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

/* ---------- 章节索引 ---------- */
.page-products .fn-index {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .fn-index ul {
  list-style: none;
  margin: 0;
  padding: 6px 0;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-products .fn-index ul::-webkit-scrollbar {
  display: none;
}

.page-products .fn-index .toc__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-products .fn-index .toc__link:hover,
.page-products .fn-index .toc__link:focus-visible {
  color: var(--cyan);
  background: rgba(55, 226, 213, 0.08);
}

.page-products .fn-index .toc__link.is-active {
  color: var(--paper);
  background: rgba(255, 90, 33, 0.12);
}

.page-products .fn-index .toc__num {
  font-size: 11px;
  color: var(--lava);
  font-variant-numeric: tabular-nums;
}

/* ---------- 能力索引带 ---------- */
.page-products .fn-band {
  position: relative;
  margin-top: clamp(22px, 3.6vw, 44px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #141a20 0%, #10141a 100%);
  overflow: hidden;
}

.page-products .fn-band::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(108, 138, 166, 0.1) 0 1px,
    transparent 1px 58px
  );
}

.page-products .fn-band .shell {
  position: relative;
}

.page-products .fn-band__head {
  padding: clamp(22px, 3.2vw, 38px) 0 clamp(8px, 1vw, 14px);
}

.page-products .fn-band__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(20px, 2.9vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.028em;
}

.page-products .cap-track {
  list-style: none;
  margin: 0;
  padding: 0 0 clamp(20px, 3vw, 34px);
  display: grid;
  grid-template-columns: 1fr;
}

.page-products .cap-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num name"
    "num desc";
  gap: 4px 14px;
  padding: 15px 2px;
  border-top: 1px solid var(--line);
}

.page-products .cap-num {
  grid-area: num;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--lava);
  font-variant-numeric: tabular-nums;
}

.page-products .cap-name {
  grid-area: name;
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper);
}

.page-products .cap-desc {
  grid-area: desc;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.66;
  color: var(--mist);
}

@media (min-width: 1000px) {
  .page-products .cap-track {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-products .cap-item {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "num"
      "name"
      "desc";
    gap: 8px;
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 20px 16px 24px;
  }

  .page-products .cap-item:first-child {
    border-left: 0;
  }

  .page-products .cap-num {
    padding-top: 0;
  }
}

/* ---------- 通用章节 ---------- */
.page-products .fn-sec {
  padding-top: clamp(48px, 6.4vw, 92px);
}

.page-products .fn-sec--tight {
  padding-top: clamp(36px, 4.6vw, 64px);
}

.page-products .index-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lava);
}

.page-products .fn-h2 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.7vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.032em;
  max-width: 22ch;
}

.page-products .fn-h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-20);
  line-height: 1.28;
  letter-spacing: -0.02em;
}

.page-products .prose {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 签表结构 ---------- */
.page-products .bracket-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 38px);
  margin-top: clamp(20px, 3vw, 32px);
}

@media (min-width: 960px) {
  .page-products .bracket-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-products .tree-node {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  margin-top: 10px;
  transition: background-color 0.2s var(--ease);
}

.page-products .tree-node:first-child {
  margin-top: 0;
}

.page-products .tree-node[open] {
  background: var(--panel-2);
}

.page-products .tree-node__head {
  position: relative;
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 13px 40px 13px 16px;
  font-size: var(--fs-14);
}

.page-products .tree-node__head::-webkit-details-marker {
  display: none;
}

.page-products .tree-node__head::marker {
  content: "";
}

.page-products .tree-node__head::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 50%;
  width: 7px;
  height: 7px;
  margin-top: -5px;
  border-right: 1.5px solid var(--mist);
  border-bottom: 1.5px solid var(--mist);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
}

.page-products .tree-node[open] > .tree-node__head::after {
  transform: rotate(-135deg);
}

.page-products .tree-node__head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-products .tree-node__lv {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--steel);
}

.page-products .tree-node__name {
  color: var(--paper);
  font-weight: 700;
}

.page-products .tree-node__meta {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}

.page-products .tree-node__body {
  margin: 0 16px 16px 22px;
  padding-left: 14px;
  border-left: 1px dashed var(--line);
}

.page-products .tree-node__body p {
  margin: 0 0 10px;
  max-width: 56ch;
  font-size: var(--fs-14);
  line-height: 1.76;
  color: var(--mist);
}

.page-products .tree-node__body p:last-child {
  margin-bottom: 0;
}

.page-products .tree-node--deep {
  margin-bottom: 12px;
}

/* ---------- 图片 ---------- */
.page-products .shot {
  margin: 0;
}

.page-products .shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  object-fit: cover;
}

.page-products .shot__cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.62;
  color: var(--mist);
}

.page-products .shot--phone {
  max-width: 300px;
  margin-inline: auto;
}

.page-products .shot--wide {
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 双条件检索 ---------- */
.page-products .console {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(20px, 3vw, 32px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

@media (min-width: 880px) {
  .page-products .console {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-products .console__cell {
  background: var(--panel);
  padding: clamp(18px, 2.6vw, 28px);
  min-width: 0;
}

.page-products .console__label {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--paper);
}

.page-products .console__idx {
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border: 1px solid var(--lava);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--lava);
}

.page-products .console__hint {
  margin: 12px 0 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--mist);
}

.page-products .keys {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-products .keys li {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--mist);
}

.page-products .keys li.is-active {
  border-color: var(--lava);
  color: var(--lava);
}

.page-products .ruler {
  position: relative;
  height: 52px;
  margin-top: 18px;
  border-bottom: 1px solid var(--line);
  background-image:
    repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 12px),
    repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 48px);
  background-repeat: no-repeat, no-repeat;
  background-position: bottom left, bottom left;
  background-size: 100% 9px, 100% 17px;
}

.page-products .ruler::after {
  content: "";
  position: absolute;
  left: 38%;
  bottom: -5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lava);
  transform: translateX(-50%);
  box-shadow: 0 0 0 4px rgba(255, 90, 33, 0.18);
}

.page-products .ruler__cap {
  position: absolute;
  bottom: 26px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--mist);
}

.page-products .ruler__cap--l {
  left: 0;
}

.page-products .ruler__cap--r {
  right: 0;
}

.page-products .result-head {
  display: grid;
  gap: 12px;
  margin-top: clamp(26px, 3.4vw, 40px);
}

.page-products .result-head__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-20);
  letter-spacing: -0.02em;
}

/* ---------- 数据表 ---------- */
.page-products .fn-table__scroll {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .fn-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: var(--fs-14);
}

.page-products .fn-table__cap {
  caption-side: top;
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--mist);
  border-bottom: 1px solid var(--line);
}

.page-products .fn-table th,
.page-products .fn-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-products .fn-table thead th {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--mist);
  background: var(--panel-2);
}

.page-products .fn-table tbody tr {
  background: var(--panel);
  transition: background-color 0.18s var(--ease);
}

.page-products .fn-table tbody tr:hover {
  background: var(--panel-2);
}

.page-products .fn-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-products .fn-table__num,
.page-products .fn-table__code {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--steel);
  font-size: var(--fs-12);
}

.page-products .fn-table__status {
  position: sticky;
  right: 0;
  background: var(--panel);
  box-shadow: -12px 0 16px -14px rgba(0, 0, 0, 0.95);
}

.page-products .fn-table tbody tr:hover .fn-table__status {
  background: var(--panel-2);
}

.page-products .fn-table thead .fn-table__status {
  background: var(--panel-2);
}

/* ---------- 快照与版本 ---------- */
.page-products .snap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 38px);
  margin-top: clamp(20px, 3vw, 32px);
}

@media (min-width: 960px) {
  .page-products .snap-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-products .snap-panel {
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  min-width: 0;
}

.page-products .snap-panel .prose {
  margin-top: 12px;
}

.page-products .chip-note {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--steel);
}

.page-products .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.page-products .chip-row .copy-chip {
  cursor: pointer;
}

.page-products .snap-facts {
  list-style: none;
  margin: 22px 0 0;
  padding: 18px 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 12px;
}

.page-products .snap-facts li {
  display: grid;
  gap: 4px;
  font-size: var(--fs-14);
  line-height: 1.68;
  color: var(--mist);
}

.page-products .snap-facts__k {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--steel);
}

/* ---------- 小屏提示 ---------- */
.page-products .screen-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 32px);
}

@media (min-width: 900px) {
  .page-products .screen-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

.page-products .signal-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .signal {
  padding: clamp(16px, 2.2vw, 22px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left-width: 3px;
  border-radius: var(--r-md);
}

.page-products .signal--check {
  border-left-color: var(--signal);
}

.page-products .signal--alert {
  border-left-color: var(--lava);
}

.page-products .signal--archived {
  border-left-color: var(--mist);
}

.page-products .signal__head {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-products .signal__name {
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper);
}

.page-products .signal__body {
  margin: 12px 0 0;
  font-size: var(--fs-14);
  line-height: 1.76;
  color: var(--mist);
}

.page-products .signal__act {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--paper);
}

.page-products .signal__act-k {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--lava);
}

/* ---------- 回访核对 ---------- */
.page-products .rv-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .rv-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-bottom: 1px solid var(--line);
}

.page-products .rv-step__num {
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  line-height: 1.1;
  color: var(--lava);
  font-variant-numeric: tabular-nums;
}

.page-products .rv-step__main {
  min-width: 0;
}

.page-products .rv-step__title {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper);
}

.page-products .rv-step__body {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: var(--fs-14);
  line-height: 1.76;
  color: var(--mist);
}

/* ---------- 收束 ---------- */
.page-products .fn-close {
  padding-top: clamp(44px, 6vw, 88px);
}

.page-products .fn-close .shot {
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-products .fn-close__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(22px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-products .fn-close__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }
}

.page-products .fn-links {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .fn-links li {
  border-bottom: 1px solid var(--line);
}

.page-products .fn-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 4px;
  color: var(--paper);
  font-size: var(--fs-16);
  text-decoration: none;
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-products .fn-links a:hover,
.page-products .fn-links a:focus-visible {
  color: var(--cyan);
  transform: translateX(2px);
}

.page-products .fn-links__arrow {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--mist);
}

@media (prefers-reduced-motion: reduce) {
  .page-products .fn-index .toc__link,
  .page-products .tree-node__head::after,
  .page-products .fn-table tbody tr,
  .page-products .fn-links a {
    transition: none;
  }

  .page-products .fn-links a:hover,
  .page-products .fn-links a:focus-visible {
    transform: none;
  }
}