.page-products {
  --dl-gap: clamp(24px, 4.5vw, 56px);
  --dl-pad: clamp(40px, 7.5vw, 92px);
}

.page-products .crumbs {
  padding-block: 22px 0;
}

/* ---------- 首屏 ---------- */
.page-products .dl-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .dl-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -16%;
  width: 58%;
  height: 160%;
  background: linear-gradient(158deg, rgba(75, 46, 131, 0.34), rgba(3, 11, 20, 0) 62%);
  transform: rotate(6deg);
  pointer-events: none;
}

.page-products .dl-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  padding-block: clamp(26px, 5vw, 58px) clamp(40px, 8vw, 88px);
}

.page-products .dl-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.page-products .dl-hero__title {
  margin: 0 0 20px;
  font-size: clamp(29px, 6.4vw, 56px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-products .dl-hero__lede {
  max-width: 36em;
  margin: 0 0 28px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .dl-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.page-products .dl-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 520px;
  margin: 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.page-products .dl-hero__stats dt {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-products .dl-hero__stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-products .dl-hero__stats .num {
  color: var(--cyan);
}

.page-products .dl-hero__visual {
  margin: 0;
}

.page-products .dl-hero__visual .media {
  border: 1px solid var(--line-soft);
}

/* ---------- 章节通用 ---------- */
.page-products .dl-sec {
  padding-block: var(--dl-pad);
  border-bottom: 1px solid var(--line-soft);
}

.page-products .dl-sec:last-of-type {
  border-bottom: 0;
}

.page-products .dl-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 16px;
  align-items: center;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-products .dl-sec__idx {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 50px);
  font-weight: 700;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px var(--line);
}

.page-products .dl-sec__title {
  margin: 0;
  font-size: clamp(21px, 3.4vw, 32px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-products .dl-sec__note {
  grid-column: 2;
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-products .dl-sec__lede {
  max-width: 36em;
  margin: 0 0 clamp(22px, 3.4vw, 34px);
  font-size: 15px;
  line-height: 1.8;
  color: var(--white);
}

/* ---------- 01 三端一个账号 ---------- */
.page-products .dl-devices__lede {
  max-width: 36em;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .dl-devices__list {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.page-products .dl-device {
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(14, 42, 66, 0.72), rgba(7, 26, 43, 0.5));
}

.page-products .dl-device h3 {
  margin: 10px 0 8px;
  font-size: 16.5px;
  color: var(--white);
}

.page-products .dl-device p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 02 功能入口 ---------- */
.page-products .dl-feat {
  display: grid;
  gap: var(--dl-gap);
}

.page-products .dl-feat__grid {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.page-products .dl-feat__card {
  padding: 20px 22px;
}

.page-products .dl-feat__t {
  margin: 0 0 10px;
  font-size: 16px;
  color: var(--white);
}

.page-products .dl-feat__d {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .dl-feat__tip {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-products .dl-feat__visual {
  margin: 0;
}

/* ---------- 03 安装四步 ---------- */
.page-products .dl-shot {
  margin: 0 0 clamp(28px, 5vw, 52px);
}

.page-products .dl-steps {
  list-style: none;
  display: grid;
  gap: 24px;
  margin: 0;
  padding: 0;
}

.page-products .dl-step {
  position: relative;
  padding-top: 22px;
}

.page-products .dl-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(27, 63, 92, 0.18));
}

.page-products .dl-step::after {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 5px;
  height: 5px;
  background: var(--cyan);
}

.page-products .dl-step__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  color: var(--cyan);
}

.page-products .dl-step__t {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--white);
}

.page-products .dl-step__d {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .dl-step__more {
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
}

.page-products .dl-step__more summary {
  list-style: none;
  cursor: pointer;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-products .dl-step__more summary::-webkit-details-marker {
  display: none;
}

.page-products .dl-step__more summary::before {
  content: "+ ";
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-products .dl-step__more[open] summary::before {
  content: "− ";
}

.page-products .dl-step__more p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 04 设备与网络 ---------- */
.page-products .dl-req {
  display: grid;
  gap: var(--dl-gap);
}

.page-products .dl-req__main {
  position: relative;
}

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

.page-products .dl-req__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .dl-req__tabs label {
  padding: 8px 14px;
  border: 1px solid var(--line-soft);
  background: rgba(14, 42, 66, 0.45);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .dl-req__tabs label:hover {
  color: var(--white);
}

.page-products #dlr-android:checked ~ .dl-req__tabs label[for="dlr-android"],
.page-products #dlr-ios:checked ~ .dl-req__tabs label[for="dlr-ios"],
.page-products #dlr-web:checked ~ .dl-req__tabs label[for="dlr-web"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-products #dlr-android:focus-visible ~ .dl-req__tabs label[for="dlr-android"],
.page-products #dlr-ios:focus-visible ~ .dl-req__tabs label[for="dlr-ios"],
.page-products #dlr-web:focus-visible ~ .dl-req__tabs label[for="dlr-web"] {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .dl-req__panel {
  display: none;
}

.page-products .dl-req__input:nth-of-type(1):checked ~ .dl-req__panels > .dl-req__panel:nth-child(1),
.page-products .dl-req__input:nth-of-type(2):checked ~ .dl-req__panels > .dl-req__panel:nth-child(2),
.page-products .dl-req__input:nth-of-type(3):checked ~ .dl-req__panels > .dl-req__panel:nth-child(3) {
  display: block;
}

.page-products .dl-req__panel dl {
  display: grid;
  margin: 0;
  border-top: 1px solid var(--line-soft);
}

.page-products .dl-req__panel dl > div {
  display: grid;
  grid-template-columns: 8.5em minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .dl-req__panel dt {
  font-size: 12.5px;
  color: var(--muted);
}

.page-products .dl-req__panel dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--white);
  word-break: break-word;
}

.page-products .dl-req__note {
  margin: 18px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--violet);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .dl-req__visual {
  margin: 0;
}

.page-products .dl-check {
  margin-top: clamp(30px, 5vw, 52px);
  padding: clamp(20px, 3.4vw, 32px);
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(7, 26, 43, 0.88), rgba(3, 11, 20, 0.62));
}

.page-products .dl-check__t {
  margin: 0 0 16px;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--white);
}

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

.page-products .dl-check li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-products .dl-check input {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  border: 1px solid var(--line);
  background: rgba(3, 11, 20, 0.7);
  cursor: pointer;
}

.page-products .dl-check input:checked {
  border-color: var(--cyan);
  background: rgba(47, 227, 210, 0.14);
}

.page-products .dl-check input:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(42deg);
}

.page-products .dl-check input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .dl-check label {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  cursor: pointer;
}

.page-products .dl-check input:checked + label {
  color: var(--white);
}

/* ---------- 05 版本时间轴 ---------- */
.page-products .dl-tl {
  list-style: none;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 84%);
  gap: 18px;
  margin: 0;
  padding: 0 0 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-products .dl-tl__item {
  position: relative;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  scroll-snap-align: start;
}

.page-products .dl-tl__item::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 5px;
  height: 5px;
  background: var(--cyan);
}

.page-products .dl-tl__item:last-child::before {
  background: var(--pulse);
}

.page-products .dl-tl__ver {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-products .dl-tl__item:last-child .dl-tl__ver {
  color: var(--pulse);
}

.page-products .dl-tl__t {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--white);
}

.page-products .dl-tl__d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 06 登录自查 ---------- */
.page-products .dl-fix {
  list-style: none;
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
}

.page-products .dl-fix__step {
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.page-products .dl-fix__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-products .dl-fix__step h3 {
  margin: 8px 0 8px;
  font-size: 16px;
  color: var(--white);
}

.page-products .dl-fix__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .dl-fix__tail {
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 16px 20px;
  border-left: 2px solid var(--pulse);
  background: rgba(255, 122, 51, 0.06);
  font-size: 14px;
  line-height: 1.8;
  color: var(--white);
}

.page-products .dl-fix__tail a {
  color: var(--cyan);
}

/* ---------- 07 更新与支持 ---------- */
.page-products .dl-cycle {
  display: grid;
  gap: 16px;
}

.page-products .dl-cycle__card {
  padding: 22px 24px;
}

.page-products .dl-cycle__card h3 {
  margin: 12px 0 10px;
  font-size: 17px;
  color: var(--white);
}

.page-products .dl-cycle__card .dl-cycle__text {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .dl-cycle__card .dl-cycle__meta {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .dl-cycle__card a {
  color: var(--cyan);
}

.page-products .dl-contact {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-products .dl-contact li {
  display: grid;
  grid-template-columns: 6.5em minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .dl-contact__k {
  font-size: 12.5px;
  color: var(--muted);
}

.page-products .dl-contact__v {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--white);
  word-break: break-all;
}

.page-products .dl-cycle__acts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .dl-feat__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .dl-check ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 28px;
  }
}

@media (min-width: 760px) {
  .page-products .dl-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 24px;
  }
}

@media (min-width: 900px) {
  .page-products .dl-hero__inner {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }

  .page-products .dl-devices {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: var(--dl-gap);
    align-items: start;
  }

  .page-products .dl-devices__lede {
    margin-bottom: 0;
  }

  .page-products .dl-feat {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-products .dl-req {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-products .dl-fix {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-products .dl-cycle {
    grid-template-columns: 5fr 7fr;
    gap: var(--dl-gap);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-products .dl-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .dl-tl {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-auto-columns: auto;
    gap: var(--dl-gap);
    overflow-x: visible;
    padding-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}