.page-products {
  --proj-panel-bg: rgba(20, 41, 75, .62);
  --proj-panel-line: var(--hairline);
}

/* ---------- 首屏 ---------- */
.page-products .proj-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(18px, 3vw, 36px) 0 clamp(44px, 7vw, 92px);
}

.page-products .proj-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -32%;
  right: -24%;
  width: min(88%, 900px);
  aspect-ratio: 1;
  background:
    radial-gradient(circle at 34% 38%, rgba(35, 211, 211, .24), rgba(35, 211, 211, 0) 62%),
    linear-gradient(152deg, var(--ink-700) 0%, var(--ink-900) 68%);
  border-radius: 46% 54% 48% 52% / 50% 46% 54% 50%;
}

.page-products .proj-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: 0;
  right: 0;
  bottom: 13%;
  height: 1px;
  background: linear-gradient(90deg,
    rgba(242, 169, 59, 0),
    rgba(242, 169, 59, .55) 36%,
    rgba(35, 211, 211, .45) 68%,
    rgba(35, 211, 211, 0));
  transform: rotate(-3.4deg);
}

.page-products .proj-hero-copy {
  margin-top: clamp(22px, 4vw, 44px);
}

.page-products .proj-hero h1 {
  margin: 8px 0 clamp(14px, 2vw, 22px);
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 74px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-products .proj-hero-lede {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.78;
  color: var(--text-dim);
}

.page-products .proj-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-products .proj-hero-stats {
  list-style: none;
  margin: clamp(30px, 4.5vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(10px, 2vw, 20px);
  max-width: 640px;
}

.page-products .proj-hero-stats li {
  display: grid;
  gap: 3px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--proj-panel-bg);
  border: 1px solid var(--proj-panel-line);
}

.page-products .proj-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold-500);
}

.page-products .proj-stat-label {
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------- 工作区骨架 ---------- */
.page-products .proj-workspace {
  padding: clamp(8px, 2vw, 24px) 0 clamp(48px, 8vw, 104px);
}

.page-products .proj-workspace-inner {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-products .proj-main {
  display: grid;
  gap: clamp(46px, 6vw, 88px);
  min-width: 0;
}

/* ---------- 粘性分区索引 ---------- */
.page-products .proj-index {
  padding: clamp(16px, 2vw, 22px);
  border-radius: var(--radius-lg);
  background: linear-gradient(168deg, var(--ink-700) 0%, rgba(20, 41, 75, .5) 100%);
  border: 1px solid var(--proj-panel-line);
}

.page-products .proj-index-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan-400);
}

.page-products .proj-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-products .proj-index-link {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--text-dim);
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-products .proj-index-num {
  font-size: 12px;
  font-weight: 600;
  color: rgba(35, 211, 211, .78);
}

.page-products .proj-index-link:hover,
.page-products .proj-index-link:focus-visible {
  background: rgba(35, 211, 211, .10);
  color: var(--text);
}

.page-products .proj-index-link[data-spy-current="true"] {
  background: rgba(242, 169, 59, .16);
  color: var(--text);
  box-shadow: inset 2px 0 0 var(--gold-500);
}

.page-products .proj-index-link[data-spy-current="true"] .proj-index-num {
  color: var(--gold-500);
}

.page-products .proj-index-media {
  margin: 16px 0 0;
}

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

/* ---------- 章节头部微调 ---------- */
.page-products .proj-section {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-products .proj-section .section-title {
  margin: 6px 0 12px;
  font-size: clamp(23px, 3.2vw, 36px);
  line-height: 1.22;
  letter-spacing: -.01em;
}

.page-products .proj-section .section-lede {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 图片 ---------- */
.page-products .proj-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

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

.page-products .proj-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 分区树 ---------- */
.page-products .proj-tree {
  display: grid;
  gap: 10px;
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-products .proj-tree-item {
  border-radius: var(--radius-md);
  background: var(--ink-700);
  border: 1px solid var(--proj-panel-line);
  overflow: hidden;
}

.page-products .proj-tree-btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 48px;
  padding: 14px 16px;
  background: none;
  border: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: background .2s var(--ease);
}

.page-products .proj-tree-btn:hover {
  background: rgba(35, 211, 211, .08);
}

.page-products .proj-tree-btn[aria-expanded="true"] {
  background: rgba(35, 211, 211, .10);
}

.page-products .proj-tree-code {
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan-400);
}

.page-products .proj-tree-toggle {
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--mist-300);
  border-bottom: 2px solid var(--mist-300);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform .2s var(--ease);
}

.page-products .proj-tree-btn[aria-expanded="true"] .proj-tree-toggle {
  transform: rotate(-135deg) translate(-2px, -2px);
  border-color: var(--gold-500);
}

.page-products .proj-tree-panel {
  padding: 4px 16px 16px;
}

.page-products .proj-stage-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .proj-stage {
  display: grid;
  gap: 3px;
  padding: 10px 12px 10px 16px;
  border-left: 2px solid rgba(35, 211, 211, .42);
  border-radius: 0 12px 12px 0;
  background: rgba(11, 27, 51, .55);
}

.page-products .proj-stage-name {
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--cyan-400);
}

.page-products .proj-stage-note {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-dim);
}

/* ---------- 一条明细四段 ---------- */
.page-products .proj-anatomy {
  display: grid;
  gap: 14px;
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-products .proj-anatomy-card {
  position: relative;
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 22px 18px 20px;
  border-radius: var(--radius-md);
  background: var(--proj-panel-bg);
  border: 1px solid var(--proj-panel-line);
}

.page-products .proj-anatomy-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 18px;
  right: 18px;
  height: 2px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--gold-500), rgba(35, 211, 211, .8));
  opacity: .75;
}

.page-products .proj-anatomy-idx {
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan-400);
}

.page-products .proj-anatomy-title {
  margin: 0;
  font-size: clamp(17px, 2vw, 19px);
  font-weight: 700;
  color: var(--text);
}

.page-products .proj-anatomy-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

/* ---------- 步骤卡片 ---------- */
.page-products .proj-steps {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .proj-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  padding: clamp(16px, 2.2vw, 24px);
  border-radius: var(--radius-md);
  background: linear-gradient(140deg, var(--sand-200) 0%, var(--sand-50) 100%);
  color: var(--ink-900);
}

.page-products .proj-step-num {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  background: var(--ink-900);
  color: var(--gold-500);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .02em;
}

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

.page-products .proj-step-title {
  margin: 0 0 6px;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  color: var(--ink-900);
}

.page-products .proj-step-text {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(11, 27, 51, .82);
}

.page-products .proj-step-feedback {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(11, 27, 51, .74);
}

.page-products .proj-step-feedback-key {
  flex: none;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: var(--ink-900);
  color: var(--gold-300);
  font-size: 11.5px;
  letter-spacing: .04em;
}

/* ---------- 赛季阶段 ---------- */
.page-products .proj-season {
  position: relative;
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-products .proj-season-item {
  position: relative;
  padding-top: 28px;
}

.page-products .proj-season-dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(35, 211, 211, .12);
}

.page-products .proj-season-name {
  margin: 0 0 6px;
  font-size: clamp(16px, 1.9vw, 18px);
  font-weight: 700;
  color: var(--text);
}

.page-products .proj-season-note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-products .proj-season-foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--gold-500);
  background: rgba(242, 169, 59, .08);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 导出 ---------- */
.page-products .proj-export {
  display: grid;
  gap: 14px;
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-products .proj-export-card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius-lg);
  background: var(--ink-700);
  border: 1px solid var(--proj-panel-line);
}

.page-products .proj-export-card--gold {
  background: linear-gradient(158deg, rgba(242, 169, 59, .18), rgba(20, 41, 75, .9) 62%);
  border-color: rgba(242, 169, 59, .38);
}

.page-products .proj-export-tag {
  justify-self: start;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(35, 211, 211, .16);
  color: var(--cyan-400);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
}

.page-products .proj-export-card--gold .proj-export-tag {
  background: rgba(242, 169, 59, .2);
  color: var(--gold-300);
}

.page-products .proj-export-title {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.page-products .proj-export-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--text-dim);
}

.page-products .proj-export-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .proj-export-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--text-dim);
}

.page-products .proj-export-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--cyan-400);
  transform: rotate(45deg);
}

.page-products .proj-export-card--gold .proj-export-list li::before {
  background: var(--gold-500);
}

.page-products .proj-export-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 人工帮助 ---------- */
.page-products .proj-section--help {
  padding-top: clamp(4px, 1vw, 10px);
}

.page-products .proj-help {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 3.4vw, 40px);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 88% 12%, rgba(35, 211, 211, .16), rgba(35, 211, 211, 0) 58%),
    linear-gradient(150deg, var(--ink-700), var(--ink-900) 72%);
  border: 1px solid var(--proj-panel-line);
}

.page-products .proj-help-list {
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .proj-help-list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  align-items: baseline;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-products .proj-help-list .mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--gold-500);
}

.page-products .proj-help-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--radius-md);
  background: rgba(11, 27, 51, .68);
  border: 1px solid rgba(35, 211, 211, .26);
}

.page-products .proj-help-mail {
  margin: 0;
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 600;
  word-break: break-all;
  color: var(--cyan-400);
}

.page-products .proj-help-card-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--text-dim);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-products .proj-anatomy {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .proj-export {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-products .proj-season {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-products .proj-season::before {
    content: "";
    position: absolute;
    top: 8px;
    left: 4px;
    right: 4px;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan-600), var(--gold-500));
    opacity: .55;
  }

  .page-products .proj-help {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (max-width: 719px) {
  .page-products .proj-season-item {
    padding-top: 0;
    padding-left: 18px;
    border-left: 2px solid rgba(35, 211, 211, .35);
  }

  .page-products .proj-season-dot {
    display: none;
  }
}

@media (min-width: 1000px) {
  .page-products .proj-workspace-inner {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-products .proj-index {
    position: sticky;
    top: 96px;
  }

  .page-products .proj-hero-stats {
    max-width: 700px;
  }
}

@media (min-width: 1100px) {
  .page-products .proj-anatomy {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .proj-antomy-card:nth-child(even) {
    transform: translateY(18px);
  }
}

@media (max-width: 999px) {
  .page-products .proj-index-media {
    max-width: 300px;
  }
}

@media (max-width: 460px) {
  .page-products .proj-step {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .page-products .proj-step-num {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .proj-index-link,
  .page-products .proj-tree-btn,
  .page-products .proj-tree-toggle {
    transition: none;
  }
}