/* ===== 服务与入口 · page-products ===== */

.page-products {
  display: block;
  background:
    radial-gradient(1100px 560px at 84% -8%, rgba(0, 229, 255, 0.09), transparent 62%),
    radial-gradient(900px 520px at -8% 24%, rgba(142, 29, 60, 0.16), transparent 64%),
    var(--ink-900);
  padding-bottom: clamp(48px, 7vw, 108px);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  padding-top: clamp(20px, 3.4vw, 48px);
  padding-bottom: clamp(28px, 4.4vw, 62px);
}

.page-products .prod-hero__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(44px, 10.5vw, 112px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  color: var(--white);
}

.page-products .prod-hero__title .accent-cyan {
  display: block;
  color: var(--cyan);
  font-size: clamp(28px, 6.4vw, 66px);
  letter-spacing: 0.01em;
  margin-top: 4px;
}

.page-products .prod-hero__lead {
  max-width: 60ch;
  margin-top: clamp(16px, 2.4vw, 24px);
  color: var(--g300);
  line-height: 1.8;
  font-size: clamp(15.5px, 1.55vw, 18px);
}

.page-products .prod-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-products .prod-stats span {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--g300);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 7px 15px;
  background: rgba(16, 31, 60, 0.55);
}

.page-products .prod-stats b {
  color: var(--amber);
  font-weight: 700;
}

.page-products .prod-slash {
  height: 3px;
  margin-top: clamp(26px, 4vw, 44px);
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--cyan), var(--orange) 46%, rgba(255, 107, 26, 0) 94%);
  transform: skewX(-18deg);
}

/* ---------- 区块标题 ---------- */
.page-products .psec-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-products .psec-head .t-eyebrow {
  display: block;
  margin-bottom: 10px;
}

.page-products .psec-head h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(30px, 5.6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--white);
}

.page-products .psec-head p {
  max-width: 64ch;
  margin: 14px 0 0;
  color: var(--g300);
  line-height: 1.8;
  font-size: 15.5px;
}

/* ---------- 技能树 ---------- */
.page-products .tree {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.page-products .tree__figure {
  margin: 0;
}

.page-products .tree__figure img,
.page-products .stepfigure img,
.page-products .iosfigure img,
.page-products .specfigure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
  object-fit: cover;
}

.page-products .tree__figure figcaption,
.page-products .stepfigure figcaption,
.page-products .iosfigure figcaption,
.page-products .specfigure figcaption,
.page-products .listfigure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--g500);
}

.page-products .tree__nodes {
  position: relative;
  padding-left: 26px;
}

.page-products .tree__nodes::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--indigo) 52%, var(--orange));
  opacity: 0.6;
}

.page-products .branch {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(16, 31, 60, 0.92), rgba(10, 20, 40, 0.72));
  margin-bottom: 12px;
  transition: border-color 0.25s ease;
}

.page-products .branch:hover,
.page-products .branch[open] {
  border-color: var(--line-strong);
}

.page-products .branch::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 30px;
  width: 16px;
  height: 2px;
  background: var(--cyan);
  opacity: 0.65;
}

.page-products .branch__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-products .branch__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-900);
  background: var(--cyan);
  border-radius: var(--r-pill);
  padding: 2px 10px;
}

.page-products .branch__title {
  flex: 1 1 auto;
  font-family: var(--font-head);
  font-size: clamp(18px, 2.4vw, 22px);
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-products .branch__chev {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.25s ease;
}

.page-products .branch[open] .branch__chev {
  transform: rotate(90deg);
}

.page-products .branch__body {
  padding: 0 18px 18px;
  color: var(--g300);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-products .branch__body ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.page-products .branch__body li {
  margin-bottom: 4px;
}

.page-products .branch__go {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  padding-bottom: 2px;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.page-products .branch__go:hover {
  color: var(--orange);
  border-color: rgba(255, 107, 26, 0.6);
}

/* ---------- 步骤 ---------- */
.page-products .stepwrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

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

.page-products .step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: clamp(16px, 2vw, 22px);
  background: linear-gradient(120deg, rgba(16, 31, 60, 0.9), rgba(10, 20, 40, 0.58));
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-products .step:hover {
  border-color: var(--line-strong);
  transform: translateX(4px);
}

.page-products .step__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--orange);
  border: 1px solid rgba(255, 107, 26, 0.5);
  border-radius: var(--r-pill);
  padding: 3px 12px;
}

.page-products .step__title {
  font-family: var(--font-head);
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--white);
  margin: 2px 0 8px;
  letter-spacing: 0.01em;
}

.page-products .step__text {
  margin: 0;
  color: var(--g300);
  font-size: 15px;
  line-height: 1.8;
}

.page-products .stepfigure {
  margin: 0;
}

/* ---------- iOS 查询 ---------- */
.page-products .ioswrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.page-products .iosfigure {
  margin: 0;
}

.page-products .ios-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .ios-step {
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: clamp(16px, 2vw, 22px);
  background: rgba(16, 31, 60, 0.55);
  margin-bottom: 14px;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-products .ios-step:hover {
  border-left-color: var(--orange);
  background: rgba(22, 41, 77, 0.72);
}

.page-products .ios-step__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-products .ios-step__title {
  font-family: var(--font-head);
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--white);
  margin: 0 0 8px;
}

.page-products .ios-step__text {
  margin: 0;
  color: var(--g300);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 对照清单 ---------- */
.page-products .railwrap {
  position: relative;
}

.page-products .rail > .listcat {
  flex: 0 0 min(340px, 84vw);
}

.page-products .listcat {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 20px 18px;
  background: linear-gradient(165deg, rgba(20, 36, 68, 0.95), rgba(10, 20, 40, 0.86));
  scroll-snap-align: start;
  transition: border-color 0.25s ease;
}

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

.page-products .listcat__title {
  font-family: var(--font-head);
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--white);
  margin: 0 0 6px;
}

.page-products .listcat__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--g500);
  margin: 0 0 14px;
}

.page-products .pair {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(176, 184, 196, 0.14);
  font-size: 13.5px;
  line-height: 1.6;
}

.page-products .pair:last-child {
  border-bottom: 0;
}

.page-products .pair__a {
  flex: 1 1 0;
  min-width: 0;
  color: var(--g300);
  overflow-wrap: anywhere;
}

.page-products .pair__arrow {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  color: var(--orange);
}

.page-products .pair__b {
  flex: 1 1 0;
  min-width: 0;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-products .listfigure {
  margin: clamp(22px, 3vw, 36px) 0 0;
}

.page-products .listfigure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
  object-fit: cover;
}

/* ---------- 规格时间 ---------- */
.page-products .spectime {
  position: relative;
}

.page-products .spectime::before {
  content: "";
  display: block;
  height: 2px;
  border-radius: 2px;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--orange), var(--amber) 38%, rgba(255, 201, 64, 0) 92%);
}

.page-products .spec-rail {
  padding-bottom: 8px;
}

.page-products .spec-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 168px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 18px 16px;
  background: rgba(16, 31, 60, 0.6);
  scroll-snap-align: start;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-products .spec-item:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.page-products .spec-item__idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-products .spec-item__name {
  font-family: var(--font-head);
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-products .spec-item__note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--g300);
}

.page-products .spec-item__when {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
  border-top: 1px solid rgba(176, 184, 196, 0.14);
  padding-top: 10px;
}

.page-products .scrollhint {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--g500);
}

.page-products .specfigure {
  margin: clamp(22px, 3vw, 36px) 0 0;
}

/* ---------- 收尾 ---------- */
.page-products .prod-cta {
  border: 1px solid rgba(0, 229, 255, 0.28);
  border-radius: var(--r-lg);
  padding: clamp(24px, 4vw, 48px);
  background:
    radial-gradient(620px 260px at 10% 0%, rgba(0, 229, 255, 0.16), transparent 64%),
    linear-gradient(140deg, rgba(142, 29, 60, 0.4), rgba(59, 42, 107, 0.34) 55%, rgba(10, 20, 40, 0.92));
}

.page-products .prod-cta h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
  margin: 0;
}

.page-products .prod-cta p {
  max-width: 56ch;
  margin: 14px 0 0;
  color: var(--g300);
  line-height: 1.8;
  font-size: 15.5px;
}

.page-products .prod-cta__row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-products .stepwrap {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.85fr);
  }

  .page-products .ioswrap {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.3fr);
  }
}

@media (min-width: 940px) {
  .page-products .tree {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  }

  .page-products .tree__figure {
    position: sticky;
    top: 24px;
  }

  .page-products .rail > .listcat {
    flex: 0 0 min(360px, 30vw);
  }
}

@media (min-width: 1180px) {
  .page-products .prod-hero__title {
    letter-spacing: -0.025em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .branch__chev,
  .page-products .step,
  .page-products .spec-item,
  .page-products .ios-step,
  .page-products .branch__go {
    transition: none;
  }

  .page-products .step:hover,
  .page-products .spec-item:hover {
    transform: none;
  }
}