.page-products {
  --p-cut: 20px;
  --p-card-shadow: 0 28px 64px -40px rgba(0, 0, 0, 0.92);
  --p-rule: rgba(176, 141, 87, 0.22);
  background: var(--nn-green-deep);
  color: var(--nn-paper);
  overflow-x: hidden;
}

/* ---------- 页头 ---------- */
.page-products .nn-page-head {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--nn-header-h) + clamp(1.75rem, 6vw, 3.75rem));
  padding-bottom: clamp(2rem, 5vw, 3.25rem);
  background:
    radial-gradient(120% 96% at 8% -10%, rgba(176, 141, 87, 0.22), transparent 56%),
    radial-gradient(90% 80% at 100% 0%, rgba(192, 57, 43, 0.14), transparent 52%),
    linear-gradient(158deg, var(--nn-green) 0%, var(--nn-green-deep) 66%, #041b14 100%);
}

.page-products .nn-page-head::after {
  content: "";
  position: absolute;
  left: 32%;
  right: -14%;
  bottom: 12%;
  height: 1px;
  transform: rotate(-11deg);
  background: linear-gradient(90deg, transparent, rgba(176, 141, 87, 0.75), transparent);
  pointer-events: none;
}

.page-products .nn-page-head .nn-container {
  position: relative;
  z-index: 1;
}

.page-products .nn-display {
  max-width: 20ch;
  margin-top: 0.6rem;
  color: var(--nn-paper);
  font-size: clamp(2.1rem, 6.6vw, 4.15rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-products .nn-lede {
  max-width: 62ch;
  margin-top: 1.1rem;
  color: var(--nn-dark-ink);
}

.head-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  padding-top: 1rem;
  border-top: 1px solid var(--nn-hairline-soft);
}

.head-index__item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.4rem 0.75rem 0.4rem 0.6rem;
  border: 1px solid var(--nn-hairline-soft);
  color: var(--nn-gold-soft);
  font-family: var(--nn-font-index);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: border-color 0.25s var(--nn-ease), color 0.25s var(--nn-ease), background-color 0.25s var(--nn-ease);
}

.head-index__num {
  font-family: var(--nn-font-display);
  color: var(--nn-gold);
  font-size: 0.85rem;
}

.head-index__item:hover,
.head-index__item:focus-visible {
  border-color: var(--nn-gold);
  color: var(--nn-paper);
  background-color: rgba(176, 141, 87, 0.12);
}

/* ---------- 通用小节 ---------- */
.page-products .intro-line {
  max-width: 68ch;
  margin-top: 0.85rem;
  color: var(--nn-dark-ink);
}

.page-products .nn-section--paper .intro-line,
.page-products .nn-section--paper .nn-prose {
  color: var(--nn-paper-ink);
}

.page-products .nn-h2 {
  max-width: 26ch;
  font-size: clamp(1.5rem, 3.6vw, 2.35rem);
  line-height: 1.2;
}

.page-products .nn-h3 {
  font-size: clamp(1.05rem, 2.2vw, 1.32rem);
  line-height: 1.35;
}

/* ---------- 01 起点横向带 ---------- */
.start-band {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(78%, 1fr);
  gap: 1rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  padding-bottom: 0.75rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--nn-gold-mute) transparent;
}

.start-band::-webkit-scrollbar {
  height: 5px;
}

.start-band::-webkit-scrollbar-thumb {
  background: var(--nn-gold-mute);
}

.start-card {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--nn-hairline);
  background: linear-gradient(155deg, rgba(15, 74, 56, 0.92), rgba(6, 38, 29, 0.96));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--p-cut)), calc(100% - var(--p-cut)) 100%, 0 100%);
  box-shadow: var(--p-card-shadow);
  transition: border-color 0.3s var(--nn-ease), transform 0.3s var(--nn-ease);
}

.start-card:hover,
.start-card:focus-within {
  border-color: var(--nn-gold);
  transform: translateY(-3px);
}

.start-card--mid {
  background: linear-gradient(155deg, rgba(11, 59, 46, 0.95), rgba(6, 32, 24, 0.97));
}

.start-card--high {
  background: linear-gradient(155deg, rgba(20, 52, 42, 0.95), rgba(4, 22, 17, 0.98));
  border-color: rgba(176, 141, 87, 0.4);
}

.start-card__num {
  font-family: var(--nn-font-display);
  font-weight: 300;
  font-size: clamp(2.2rem, 7vw, 2.9rem);
  line-height: 1;
  color: var(--nn-gold);
}

.start-card--high .start-card__num {
  color: var(--nn-red-bright);
}

.start-card__text {
  margin: 0;
  color: var(--nn-dark-ink);
  font-size: 0.94rem;
  line-height: 1.7;
}

.start-card__media {
  margin: 0.25rem 0 0.1rem;
}

.start-card__media .nn-media__img {
  display: block;
  width: 100%;
  height: 160px;
  object-fit: cover;
  border: 1px solid var(--nn-hairline-soft);
}

.start-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.start-card__list li {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.5rem;
  color: var(--nn-dark-ink);
  font-size: 0.88rem;
  line-height: 1.65;
}

.start-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--nn-gold);
  transform: rotate(45deg);
}

.page-products .start-card .nn-fold {
  margin-top: auto;
  border-top: 1px solid var(--nn-hairline-soft);
}

.page-products .start-card .nn-fold__summary {
  padding-top: 0.75rem;
  color: var(--nn-gold-soft);
  font-family: var(--nn-font-index);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- 02 客户端 ---------- */
.client-grid {
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
}

.client-spec {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  border-top: 1px solid var(--nn-hairline-soft);
}

.client-spec__row {
  display: grid;
  gap: 0.2rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--nn-hairline-soft);
}

.client-spec__row dt {
  font-family: var(--nn-font-index);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nn-gold);
}

.client-spec__row dd {
  margin: 0;
  color: var(--nn-dark-ink);
  font-size: 0.93rem;
  line-height: 1.65;
}

.client-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.client-note {
  margin-top: 0.85rem;
  color: var(--nn-gold-mute);
  line-height: 1.7;
}

.client-side {
  display: grid;
  gap: 1rem;
}

.client-media {
  margin: 0;
}

.client-media .nn-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--nn-hairline);
}

.client-stamp {
  display: flex;
  justify-content: flex-end;
}

.page-products .nn-stamp {
  display: inline-block;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--nn-red);
  color: var(--nn-red-bright);
  font-family: var(--nn-font-display);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  transform: rotate(-5deg);
}

.pack-list {
  margin: 0.6rem 0 0;
  padding: 0;
  list-style: none;
}

.pack-list li {
  position: relative;
  padding: 0.55rem 0 0.55rem 1.05rem;
  border-bottom: 1px dashed var(--nn-hairline-soft);
  color: var(--nn-dark-ink);
  font-size: 0.9rem;
  line-height: 1.65;
}

.pack-list li:last-child {
  border-bottom: 0;
}

.pack-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.1em;
  width: 8px;
  height: 1px;
  background: var(--nn-gold);
}

.pack-list strong {
  color: var(--nn-gold-soft);
  font-weight: 600;
}

/* ---------- 03 三段进阶 ---------- */
.rank-steps {
  display: grid;
  gap: 1.1rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.rank-step {
  padding: clamp(1.25rem, 3vw, 1.7rem);
  border: 1px solid var(--nn-hairline);
  clip-path: polygon(0 0, calc(100% - var(--p-cut)) 0, 100% var(--p-cut), 100% 100%, 0 100%);
  background: linear-gradient(160deg, rgba(15, 74, 56, 0.7), rgba(6, 38, 29, 0.9));
}

.rank-step--2 {
  background: linear-gradient(160deg, rgba(20, 62, 49, 0.85), rgba(6, 33, 25, 0.94));
  border-color: rgba(176, 141, 87, 0.34);
}

.rank-step--3 {
  background: linear-gradient(160deg, rgba(38, 62, 50, 0.9), rgba(4, 22, 17, 0.98));
  border-color: rgba(176, 141, 87, 0.5);
}

.rank-step__tag {
  display: inline-block;
  margin-bottom: 0.6rem;
  font-family: var(--nn-font-index);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--nn-red-bright);
}

.rank-step p {
  margin: 0.6rem 0 0;
  color: var(--nn-dark-ink);
  font-size: 0.93rem;
  line-height: 1.72;
}

.rank-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--nn-hairline-soft);
}

.rank-list li {
  position: relative;
  padding: 0.55rem 0 0.55rem 0.95rem;
  color: rgba(245, 240, 230, 0.82);
  font-size: 0.86rem;
  line-height: 1.6;
}

.rank-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05em;
  width: 6px;
  height: 6px;
  background: var(--nn-gold);
  transform: rotate(45deg);
}

.rank-media {
  margin: clamp(1.75rem, 5vw, 2.75rem) 0 0;
}

.rank-media .nn-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--nn-hairline);
}

.page-products .rank-media .nn-media__caption {
  margin-top: 0.75rem;
  color: var(--nn-gold-mute);
  font-family: var(--nn-font-index);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

/* ---------- 04 牌型库与练习 ---------- */
.page-products .nn-section--paper {
  color: var(--nn-ink);
}

.page-products .nn-section--paper .nn-h2,
.page-products .nn-section--paper .nn-h3 {
  color: var(--nn-ink);
}

.page-products .nn-section--paper .nn-kicker {
  color: var(--nn-gold-mute);
}

.tactic-grid {
  margin-top: clamp(1.35rem, 4vw, 2rem);
}

.page-products .tactic-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.page-products .tactic-filter .nn-chip {
  padding: 0.45rem 0.95rem;
  border: 1px solid rgba(138, 115, 78, 0.45);
  background: transparent;
  color: #4a4133;
  font-family: var(--nn-font-index);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.22s var(--nn-ease), border-color 0.22s var(--nn-ease), color 0.22s var(--nn-ease);
}

.page-products .tactic-filter .nn-chip:hover {
  border-color: var(--nn-gold-mute);
  color: var(--nn-ink);
}

.page-products .tactic-filter .nn-chip[aria-pressed="true"] {
  background: var(--nn-green);
  border-color: var(--nn-green);
  color: var(--nn-paper);
}

.tactic-list {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tactic-item {
  padding: 0.95rem 1.05rem;
  border: 1px solid rgba(138, 115, 78, 0.3);
  background: rgba(255, 255, 255, 0.5);
  border-left: 3px solid var(--nn-gold);
}

.tactic-item[hidden] {
  display: none;
}

.tactic-item__name {
  margin: 0;
  font-family: var(--nn-font-display);
  font-size: 1.08rem;
  color: var(--nn-green);
}

.tactic-item__body {
  margin: 0.35rem 0 0;
  color: var(--nn-paper-ink);
  font-size: 0.89rem;
  line-height: 1.68;
}

.tactic-empty {
  margin-top: 1rem;
  color: var(--nn-gold-mute);
}

.practice {
  display: grid;
  gap: clamp(1.35rem, 4vw, 2.25rem);
  margin-top: clamp(2rem, 6vw, 3.25rem);
  padding-top: clamp(1.5rem, 4vw, 2.25rem);
  border-top: 1px solid rgba(138, 115, 78, 0.3);
}

.page-products .practice-title {
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  margin-top: 0.5rem;
}

.practice-list {
  margin: 1.15rem 0 0;
  padding: 0;
  list-style: none;
}

.practice-list li {
  position: relative;
  padding: 0.6rem 0 0.6rem 1.15rem;
  border-bottom: 1px dashed rgba(138, 115, 78, 0.32);
  color: var(--nn-paper-ink);
  font-size: 0.9rem;
  line-height: 1.65;
}

.practice-list li:last-child {
  border-bottom: 0;
}

.practice-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05em;
  width: 7px;
  height: 7px;
  background: var(--nn-red);
  transform: rotate(45deg);
}

.practice-list strong {
  color: var(--nn-green);
  font-weight: 600;
}

.practice-media {
  margin: 0;
  align-self: start;
}

.practice-media .nn-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(138, 115, 78, 0.35);
}

/* ---------- 05 使用场景 ---------- */
.scene-grid {
  display: grid;
  gap: 0.9rem;
  margin-top: clamp(1.35rem, 4vw, 2rem);
}

.scene-card {
  padding: clamp(1.1rem, 3vw, 1.5rem);
  border: 1px solid var(--nn-hairline-soft);
  background: linear-gradient(150deg, rgba(11, 59, 46, 0.55), rgba(6, 38, 29, 0.8));
  clip-path: polygon(var(--p-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--p-cut));
  transition: border-color 0.28s var(--nn-ease);
}

.scene-card:hover {
  border-color: var(--nn-gold);
}

.scene-card__tag {
  margin: 0 0 0.5rem;
  font-family: var(--nn-font-index);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--nn-gold);
}

.scene-card p {
  margin: 0;
  color: var(--nn-dark-ink);
  font-size: 0.9rem;
  line-height: 1.7;
}

.scene-card .nn-h3 {
  margin-bottom: 0.4rem;
}

/* ---------- 收尾 ---------- */
.close-band {
  border-top: 1px solid var(--nn-hairline);
  background:
    radial-gradient(80% 130% at 100% 0%, rgba(192, 57, 43, 0.16), transparent 60%),
    linear-gradient(180deg, var(--nn-green-deep), #041b14);
}

.close-band__inner {
  display: grid;
  gap: 1.35rem;
}

.close-band__title {
  max-width: 24ch;
}

.close-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .client-spec__row {
    grid-template-columns: 8.5rem 1fr;
    align-items: baseline;
    gap: 1rem;
  }

  .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tactic-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .start-band {
    grid-auto-flow: row;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-columns: auto;
    gap: 1.35rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .start-card__media .nn-media__img {
    height: 180px;
  }

  .client-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .rank-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 1.35rem;
  }

  .rank-step--1 {
    margin-top: 3.25rem;
  }

  .rank-step--2 {
    margin-top: 1.65rem;
  }

  .rank-step--3 {
    margin-top: 0;
  }

  .tactic-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .practice {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .scene-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .close-band__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
  }

  .close-band__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .start-card,
  .scene-card,
  .head-index__item {
    transition: none;
  }

  .start-card:hover,
  .start-card:focus-within {
    transform: none;
  }
}