.page-products {
  --sol-notch: 14px;
  --sol-rule: rgba(20, 18, 15, 0.16);
  --sol-rule-strong: rgba(20, 18, 15, 0.3);
  background: var(--paper);
  color: var(--black);
  overflow-x: clip;
}

.page-products [hidden] {
  display: none !important;
}

/* ---------- 01 首屏 ---------- */
.sol-hero {
  padding-top: clamp(24px, 4.6vw, 52px);
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
}

.sol-hero__body {
  max-width: 64ch;
  margin-top: clamp(16px, 2.6vw, 28px);
}

.sol-hero__body h1 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(29px, 6vw, 60px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 12px 0 16px;
  max-width: 22ch;
}

.sol-hero__body .lede {
  font-family: var(--sans-cond);
  font-size: clamp(15px, 1.7vw, 17.5px);
  line-height: 1.8;
  color: var(--black);
  max-width: 60ch;
  margin: 0;
}

.sol-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.sol-hero__facts span {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.sol-hero__facts span::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--brass);
  margin-right: 9px;
}

/* 首屏档位刻度带 */
.sol-ruler {
  margin-top: clamp(26px, 4.6vw, 56px);
  background: var(--ink);
  color: var(--paper);
}

.sol-ruler__inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.sol-ruler__seg {
  position: relative;
  padding: 24px 14px 22px;
  border-left: 1px solid var(--rule-invert);
  display: grid;
  gap: 6px;
  align-content: start;
}

.sol-ruler__seg:first-child {
  border-left: 0;
  padding-left: 0;
}

.sol-ruler__seg::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 14px;
  right: 14px;
  height: 5px;
  background: repeating-linear-gradient(90deg, var(--brass) 0 1px, transparent 1px 12px);
  opacity: 0.7;
}

.sol-ruler__seg:first-child::before {
  left: 0;
}

.sol-ruler__label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass-lt);
}

.sol-ruler__day {
  font-family: var(--mono);
  font-size: clamp(28px, 7vw, 50px);
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}

.sol-ruler__unit {
  font-family: var(--sans-cond);
  font-size: 12px;
  color: rgba(245, 242, 233, 0.72);
}

.sol-ruler__note {
  margin: 0;
  padding-top: 12px;
  padding-bottom: 12px;
  border-top: 1px solid var(--rule-invert);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(245, 242, 233, 0.6);
}

.sol-ruler__links {
  margin: 0;
  padding-bottom: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
}

.sol-ruler__links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--brass-lt);
  text-decoration: none;
  border-bottom: 1px solid var(--brass);
  padding-bottom: 2px;
}

.sol-ruler__links a:hover {
  color: var(--paper);
}

/* ---------- 区块通用 ---------- */
.sol-sec {
  padding-block: clamp(44px, 7.6vw, 92px);
}

.sol-sec + .sol-sec {
  border-top: 1px solid var(--sol-rule-strong);
}

.sol-head {
  max-width: 74ch;
  margin-bottom: clamp(22px, 3.6vw, 40px);
}

.sol-head h2 {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin: 12px 0 14px;
  max-width: 24ch;
}

.sol-head__lead {
  font-family: var(--sans-cond);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--black);
  max-width: 64ch;
  margin: 0;
}

/* ---------- 图片框 ---------- */
.sol-frame {
  margin: 0 0 clamp(24px, 3.6vw, 44px);
  position: relative;
  background: var(--ink-deep);
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.sol-frame--169 { aspect-ratio: 16 / 9; }
.sol-frame--74  { aspect-ratio: 7 / 4; }
.sol-frame--75  { aspect-ratio: 7 / 5; }
.sol-frame--83  { aspect-ratio: 8 / 3; }

.sol-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.sol-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--brass-lt);
  background: var(--ink);
  padding: 7px 14px;
  border-top: 2px solid var(--brass);
}

/* ---------- 02 场景 ---------- */
.sol-scenes__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sol-scene {
  display: grid;
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--sol-rule);
}

.sol-scene:last-child {
  border-bottom: 1px solid var(--sol-rule);
}

.sol-scene__num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass);
}

.sol-scene__head h3 {
  font-family: var(--serif);
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  color: var(--ink);
  margin: 0 0 8px;
}

.sol-scene__head p {
  margin: 0;
  font-family: var(--sans-cond);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--black);
}

.sol-scene__meta {
  margin: 0;
  display: grid;
  gap: 10px;
}

.sol-scene__meta div {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 12px;
  align-items: baseline;
  border-left: 2px solid var(--brass);
  padding-left: 12px;
}

.sol-scene__meta dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.sol-scene__meta dd {
  margin: 0;
  font-family: var(--sans-cond);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--black);
}

/* ---------- 筛选按钮 ---------- */
.sol-filter-root {
  margin-top: clamp(8px, 1.6vw, 18px);
}

.sol-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.sol-filter__btn {
  appearance: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 9px 16px;
  border: 1px solid var(--sol-rule-strong);
  border-left-width: 3px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.sol-filter__btn:hover {
  border-color: var(--brass);
  color: var(--ink-mid);
}

.sol-filter__btn.is-active,
.sol-filter__btn[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  border-left-color: var(--brass);
  color: var(--brass-lt);
}

/* ---------- 03 交付档位 ---------- */
.sol-tiers__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.sol-tier {
  border-top: 3px solid var(--brass);
  padding-top: 18px;
}

.sol-tier__code {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gray);
  margin: 0 0 8px;
}

.sol-tier h3 {
  font-family: var(--serif);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  color: var(--ink);
  margin: 0 0 6px;
}

.sol-tier__num {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--ink-mid);
  margin: 0 0 14px;
}

.sol-tier__num .num {
  font-size: 26px;
  font-weight: 700;
  color: var(--cinnabar);
}

.sol-tier__text {
  margin: 0 0 16px;
  font-family: var(--sans-cond);
  font-size: 15px;
  line-height: 1.8;
  color: var(--black);
}

.sol-tier__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.sol-tier__points li {
  position: relative;
  padding-left: 18px;
  font-family: var(--sans-cond);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.sol-tier__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--brass);
}

/* ---------- 04 规格族 ---------- */
.sol-specs__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.sol-spec {
  background: var(--ink);
  color: var(--paper);
  padding: 24px 20px 26px;
  clip-path: polygon(
    0 0,
    calc(100% - var(--sol-notch)) 0,
    100% var(--sol-notch),
    100% 100%,
    var(--sol-notch) 100%,
    0 calc(100% - var(--sol-notch))
  );
  transition: background-color 0.24s var(--ease);
}

.sol-spec:hover {
  background: var(--ink-mid);
}

.sol-spec__code {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass);
  margin: 0 0 12px;
}

.sol-spec h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 800;
  color: var(--brass-lt);
  margin: 0 0 6px;
}

.sol-spec__count {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(245, 242, 233, 0.7);
  margin: 0 0 14px;
}

.sol-spec__text {
  margin: 0 0 16px;
  font-family: var(--sans-cond);
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 242, 233, 0.88);
}

.sol-spec__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sol-spec__tags li {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--brass-lt);
  border: 1px solid var(--rule-invert);
  padding: 4px 9px;
}

/* ---------- 05 城市落位 ---------- */
.sol-city__levels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.sol-city__level {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 22px 20px;
  transition: transform 0.22s var(--ease);
}

.sol-city__level--1 {
  background: var(--ink);
  color: var(--paper);
}

.sol-city__level--2 {
  background: var(--ink-mid);
  color: var(--paper);
}

.sol-city__level--3 {
  background: var(--paper-2);
  color: var(--ink);
  border-left: 3px solid var(--brass);
}

.sol-city__count {
  font-family: var(--mono);
  font-size: clamp(28px, 4.6vw, 40px);
  font-weight: 700;
  line-height: 1;
}

.sol-city__level--1 .sol-city__count,
.sol-city__level--2 .sol-city__count {
  color: var(--brass-lt);
}

.sol-city__level--3 .sol-city__count {
  color: var(--cinnabar);
}

.sol-city__body h3 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 800;
  color: inherit;
  margin: 0 0 6px;
}

.sol-city__body p {
  margin: 0;
  font-family: var(--sans-cond);
  font-size: 14.5px;
  line-height: 1.75;
  opacity: 0.88;
}

/* ---------- 06 推进节奏 ---------- */
.sol-stage__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}

.sol-stage {
  position: relative;
  padding: 22px 0 22px 26px;
  border-left: 1px solid var(--sol-rule-strong);
}

.sol-stage:last-child {
  padding-bottom: 0;
}

.sol-stage::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 28px;
  width: 9px;
  height: 9px;
  background: var(--brass);
  transform: rotate(45deg);
}

.sol-stage__code {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
  display: block;
  margin-bottom: 8px;
}

.sol-stage h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
  margin: 0 0 8px;
}

.sol-stage p {
  margin: 0 0 10px;
  font-family: var(--sans-cond);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--black);
}

.sol-stage__prep {
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.8;
  letter-spacing: 0.03em;
  color: var(--gray);
  border-left: 2px solid var(--cinnabar);
  padding-left: 10px;
}

.sol-stage__prep span {
  color: var(--cinnabar);
  margin-right: 6px;
}

/* ---------- 07 进度跟踪 ---------- */
.sol-track__nodes {
  list-style: none;
  margin: 0 0 clamp(22px, 3.4vw, 38px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--sol-rule-strong);
  border: 1px solid var(--sol-rule-strong);
}

.sol-track__nodes li {
  background: var(--paper);
  padding: 22px 18px;
  display: grid;
  gap: 8px;
  align-content: start;
}

.sol-track__nodes .num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--brass);
}

.sol-track__nodes strong {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
}

.sol-track__prep {
  border-top: 3px solid var(--ink);
  padding-top: 20px;
  max-width: 70ch;
}

.sol-track__prep h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
  margin: 0 0 14px;
}

.sol-track__prep ul {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.sol-track__prep li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  align-items: baseline;
  font-family: var(--sans-cond);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--black);
}

.sol-track__prep li .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--brass);
}

.sol-track__link {
  margin: 0;
  font-family: var(--sans-cond);
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray);
}

.sol-track__link a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--brass);
}

.sol-track__link a:hover {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 08 开始核定 ---------- */
.sol-cta {
  padding-block: clamp(44px, 7.6vw, 92px);
  background: var(--paper-2);
  border-top: 1px solid var(--sol-rule-strong);
}

.sol-cta__panel {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(28px, 4.4vw, 56px);
  clip-path: polygon(
    0 0,
    calc(100% - 22px) 0,
    100% 22px,
    100% 100%,
    22px 100%,
    0 calc(100% - 22px)
  );
}

.sol-cta__panel .eyebrow {
  color: var(--brass-lt);
}

.sol-cta__panel h2 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(24px, 3.8vw, 42px);
  line-height: 1.18;
  color: var(--paper);
  margin: 12px 0 16px;
  max-width: 22ch;
}

.sol-cta__lead {
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-family: var(--sans-cond);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(245, 242, 233, 0.88);
  max-width: 60ch;
}

.sol-cta__list {
  list-style: none;
  margin: 0 0 clamp(24px, 3.4vw, 38px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--rule-invert);
  border: 1px solid var(--rule-invert);
}

.sol-cta__list li {
  background: var(--ink-deep);
  padding: 16px 16px;
  display: grid;
  gap: 8px;
  font-family: var(--sans-cond);
  font-size: 15px;
  color: var(--paper);
}

.sol-cta__list .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brass);
}

.sol-cta__actions {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
}

.sol-cta__textlink {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--brass-lt);
  text-decoration: none;
  border-bottom: 1px solid var(--brass);
  padding-bottom: 2px;
}

.sol-cta__textlink:hover {
  color: var(--paper);
}

.sol-cta__links {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-family: var(--sans-cond);
  font-size: 14px;
  line-height: 1.9;
  color: var(--gray);
}

.sol-cta__links a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--brass);
}

.sol-cta__links a:hover {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 响应式 ---------- */
@media (max-width: 619px) {
  .sol-frame--169,
  .sol-frame--74,
  .sol-frame--75,
  .sol-frame--83 {
    aspect-ratio: 4 / 3;
  }

  .sol-ruler__seg {
    padding-inline: 10px;
  }

  .sol-ruler__seg::before {
    left: 10px;
    right: 10px;
  }
}

@media (max-width: 399px) {
  .sol-cta__list {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 720px) {
  .sol-scene {
    grid-template-columns: 82px minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 0 28px;
    align-items: start;
    padding: 30px 0;
  }

  .sol-scene__num {
    padding-top: 6px;
  }

  .sol-scene__head h3 {
    margin-top: 0;
  }

  .sol-scene__meta {
    gap: 12px;
  }

  .sol-track__nodes {
    grid-template-columns: repeat(4, 1fr);
  }

  .sol-cta__list {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 820px) {
  .sol-specs__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .sol-city__level {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 24px;
    align-items: center;
  }

  .sol-city__level:hover {
    transform: translateX(6px);
  }
}

@media (min-width: 900px) {
  .sol-tiers__list {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }

  .sol-tier {
    padding: 18px 30px 0;
    border-left: 1px solid var(--sol-rule);
  }

  .sol-tier:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .sol-tier:last-child {
    padding-right: 0;
  }

  .sol-stage__list {
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--sol-rule-strong);
  }

  .sol-stage {
    border-left: 0;
    border-right: 1px solid var(--sol-rule);
    padding: 36px 26px 0 0;
  }

  .sol-stage:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .sol-stage::before {
    left: 0;
    top: -5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products *,
  .page-products *::before,
  .page-products *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}