/* ==========================================================================
   区块样式：封面叠垛、总览图表、厚度卡、材质卡、服务卡、联系区、页脚
   ========================================================================== */

/* ==========================================================================
   A. 封面 · 钢板叠垛（CSS 3D 变换，模拟真实板垛）
   ========================================================================== */

.stack {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  perspective: 1400px;
  perspective-origin: 62% 46%;
}

.stack__deck {
  position: relative;
  width: 76%;
  height: 58%;
  transform-style: preserve-3d;
  transform: rotateX(58deg) rotateZ(-38deg) translateZ(0);
}

/* 每一块钢板：一个挤出体，顶面 + 厚度侧面 */
.plate {
  position: absolute;
  left: 0;
  bottom: var(--lift);
  width: var(--w);
  height: 62px;
  transform-style: preserve-3d;
  opacity: 0;
  animation: plateIn 900ms var(--ease-out) forwards;
  animation-delay: var(--delay);
}

@keyframes plateIn {
  from { opacity: 0; transform: translateZ(-60px) translateY(18px); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .plate { opacity: 1; animation: none; }
}

/* 顶面：受光的钢板表面，带拉丝纹理 */
.plate__face {
  position: absolute;
  inset: 0;
  border-radius: 2px;
  background:
    linear-gradient(96deg, rgba(255, 255, 255, 0.10) 0%, rgba(255, 255, 255, 0) 22%),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.028) 0 1px,
      transparent 1px 4px
    ),
    linear-gradient(168deg, #3a3a3f 0%, #2a2a2e 52%, #202024 100%);
  border: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    inset 0 -8px 18px rgba(0, 0, 0, 0.42);
}

/* 厚度侧面：用橙色渐变表示"这一档被高亮" */
.plate__edge {
  position: absolute;
  left: 0;
  top: 100%;
  width: 100%;
  height: var(--h);
  background: linear-gradient(
    180deg,
    var(--tone) 0%,
    rgba(0, 0, 0, 0.86) 100%
  );
  border-left: 1px solid rgba(255, 255, 255, 0.10);
  border-right: 1px solid rgba(0, 0, 0, 0.5);
  border-radius: 0 0 2px 2px;
  transform-origin: top center;
  transform: rotateX(-90deg);
  box-shadow: 0 0 22px -4px var(--tone);
}

/* 厚度数字：放在侧面下缘外侧，随 3D 变换贴地 */
.plate__t {
  position: absolute;
  left: 10px;
  top: calc(100% + var(--h) + 4px);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(255, 235, 225, 0.9);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.7);
  transform-origin: top left;
  transform: rotateX(-90deg);
  transform-style: preserve-3d;
  line-height: 1;
  padding-top: 2px;
}

.stack__caption {
  position: absolute;
  left: 0;
  bottom: -34px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  text-transform: uppercase;
}

/* ==========================================================================
   B. 总览网格
   ========================================================================== */

.overview__grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.ov-card {
  grid-column: span 2;
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.ov-card--wide { grid-column: span 4; }
.ov-card--narrow { grid-column: span 2; }

.ov-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hair);
}

.ov-card__title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.ov-note {
  margin-top: auto;
  padding-top: 14px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--text-mute);
}
.ov-note .hot, .hot { color: var(--accent); }

/* ---- 环形图 ---- */
.ov-split {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  align-items: center;
  gap: 24px;
}

.ring-wrap { display: grid; place-items: center; }

.ring {
  width: 100%;
  max-width: 200px;
  height: auto;
  filter: drop-shadow(0 0 22px rgba(255, 107, 44, 0.16));
}

.ring__num {
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 500;
  fill: var(--text);
  letter-spacing: -0.03em;
}
.ring__unit {
  font-family: var(--font-mono);
  font-size: 9px;
  fill: var(--text-mute);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.legend { display: grid; gap: 1px; }

.legend li {
  display: grid;
  grid-template-columns: 10px 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  border-radius: var(--radius-xs);
  font-size: 12.5px;
  transition: background var(--dur-fast) var(--ease-out);
}
.legend li:hover { background: rgba(255, 255, 255, 0.04); }

.legend li i {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  display: block;
}

.lg__t { color: var(--text-dim); }
.lg__t em, .lg__wt em {
  font-style: normal;
  font-size: 10px;
  color: var(--text-mute);
  margin-left: 2px;
}
.lg__wt { color: var(--text); }
.lg__pc { color: var(--text-mute); font-size: 11px; min-width: 42px; text-align: right; }

/* ---- 厚度剖面柱 ---- */
.profile {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
  align-items: end;
  height: 168px;
  padding-top: 8px;
}

.prf { display: flex; flex-direction: column; height: 100%; }

.prf__col {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  gap: 4px;
}

.prf__val {
  font-size: 10px;
  color: var(--text-mute);
  line-height: 1;
}

.prf__bar {
  width: 100%;
  height: var(--fill);
  max-height: calc(100% - 34px);
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, rgba(255, 107, 44, 0.92), rgba(255, 107, 44, 0.18));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
  position: relative;
  min-height: 6px;
}
/* 柱身刻度：每块一条线，厚度越厚块数越多，视觉自然成"密度" */
.prf__bar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to top,
    rgba(0, 0, 0, 0.28) 0 1px,
    transparent 1px 9px
  );
  border-radius: inherit;
}

.prf__n {
  font-size: 10px;
  color: var(--text-dim);
  line-height: 1;
}

.prf__base {
  margin-top: 6px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-mute);
  border-top: 1px solid var(--hair-strong);
  padding-top: 5px;
}

/* ---- 尺寸矩阵 ---- */
.matrix {
  display: grid;
  grid-template-columns: 40px repeat(10, minmax(0, 1fr));
  gap: 3px;
  align-items: center;
}

.mx__corner { height: 16px; }

.mx__ch {
  font-size: 9px;
  color: var(--text-mute);
  text-align: center;
  letter-spacing: 0.02em;
  line-height: 1.1;
  padding-bottom: 2px;
}
.mx__ch em { font-style: normal; font-size: 7px; opacity: 0.6; }

.mx__rh {
  font-size: 10px;
  color: var(--text-mute);
  text-align: right;
  padding-right: 6px;
}

.mx__cell {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 2px;
  display: grid;
  place-items: center;
  background: rgba(255, 107, 44, calc(var(--d) * 0.042));
  border: 1px solid rgba(255, 107, 44, calc(var(--d) * 0.018));
  transition: transform var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
  cursor: default;
}
.mx__cell.is-empty {
  background: rgba(255, 255, 255, 0.018);
  border-color: transparent;
}

.mx__dot {
  font-size: 9px;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1;
}
.mx__cell.is-empty .mx__dot { display: none; }

.mx__tip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translate(-50%, 4px);
  white-space: nowrap;
  font-size: 9.5px;
  padding: 5px 8px;
  border-radius: 5px;
  background: rgba(10, 10, 12, 0.94);
  border: 1px solid var(--hair-strong);
  color: var(--text-dim);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
  z-index: 5;
}
.mx__cell:hover {
  transform: scale(1.12);
  z-index: 4;
}
.mx__cell:hover .mx__tip {
  opacity: 1;
  transform: translate(-50%, 0);
}

.matrix-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--hair);
  font-size: 10.5px;
  color: var(--text-mute);
}
.matrix-legend li { display: flex; align-items: center; gap: 6px; }
.matrix-legend i {
  width: 10px; height: 10px;
  border-radius: 2px;
  background: rgba(255, 107, 44, calc(var(--d) * 0.042));
  border: 1px solid rgba(255, 107, 44, calc(var(--d) * 0.018));
}

/* ---- 单块重量 ---- */
.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.mini {
  padding: 10px 12px;
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--hair);
}
.mini__k { font-size: 10.5px; color: var(--text-mute); }
.mini__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 19px;
  font-weight: 500;
  line-height: 1.2;
  margin-top: 2px;
  letter-spacing: -0.02em;
}
.mini__v span { font-size: 10px; color: var(--text-mute); margin-left: 2px; font-weight: 400; }

.wbar {
  position: relative;
  height: 54px;
  margin-top: 16px;
  border-bottom: 1px solid var(--hair-strong);
  /* 底部基线的两端小刻度 */
  background:
    linear-gradient(90deg, var(--hair-strong) 0 1px, transparent 1px) left bottom / 100% 6px no-repeat,
    linear-gradient(90deg, transparent calc(100% - 1px), var(--hair-strong) 1px) right bottom / 100% 6px no-repeat;
}
.wbar i {
  position: absolute;
  bottom: 0;
  width: 6px;
  height: 6px;
  margin-left: -3px;
  border-radius: 50%;
  background: rgba(255, 107, 44, 0.55);
  box-shadow: 0 0 8px -2px var(--accent-glow);
  transition: background var(--dur-fast) var(--ease-out);
}
.wbar:hover i { background: rgba(255, 107, 44, 0.34); }

.big-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 3.6vw, 46px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-top: 4px;
}
.big-num span { font-size: 14px; color: var(--text-mute); margin-left: 4px; letter-spacing: 0; }
.big-num--sm { font-size: 34px; color: var(--accent); }

/* ==========================================================================
   C. 厚度分档卡
   ========================================================================== */

.bands {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(196px, 1fr));
  gap: 12px;
}

.band {
  padding: 16px 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.band--core {
  border-color: rgba(255, 138, 61, 0.26);
  background:
    linear-gradient(180deg, rgba(255, 107, 44, 0.09), transparent 52%),
    var(--glass-bg-deep);
}

.band__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.band__t {
  font-size: 30px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--text);
}
.band__t em {
  font-style: normal;
  font-size: 11px;
  color: var(--text-mute);
  margin-left: 3px;
  letter-spacing: 0;
}

.band__role {
  font-size: 10px;
  letter-spacing: 0.06em;
  padding: 3px 7px;
  border-radius: 4px;
  color: var(--text-mute);
  border: 1px solid var(--hair);
  background: rgba(255, 255, 255, 0.03);
  white-space: nowrap;
}
.band__role.is-core {
  color: var(--accent);
  border-color: rgba(255, 138, 61, 0.30);
  background: var(--accent-soft);
}

.band__bar {
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.band__bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(255, 107, 44, 0.42), var(--accent));
}

.band__kv {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
  margin: 0;
}
.band__kv > div { display: flex; flex-direction: column; gap: 1px; }
.band__kv dt { font-size: 10.5px; color: var(--text-mute); }
.band__kv dd {
  margin: 0;
  font-size: 15px;
  color: var(--text);
  letter-spacing: -0.01em;
}

.band__dims {
  display: grid;
  gap: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--hair);
}
.band__dim {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 6px;
  font-size: 10px;
  line-height: 1.5;
  color: var(--text-mute);
}
.band__dim > span:last-child {
  color: var(--text-dim);
  font-size: 10.5px;
  word-break: break-word;
}

/* ==========================================================================
   D. 明细表补充
   ========================================================================== */

.tbl tbody td.is-strong { color: var(--text); }
.tbl tbody td.is-dim { color: var(--text-mute); font-size: 11.5px; }

.table-note {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--text-mute);
  max-width: 62em;
}

/* ==========================================================================
   E. 材质说明
   ========================================================================== */

.material__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.mat-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.elem { display: grid; gap: 2px; }

.elem__row {
  display: grid;
  grid-template-columns: 34px 26px 1fr;
  align-items: center;
  gap: 10px;
  padding: 11px 8px;
  border-radius: var(--radius-xs);
  transition: background var(--dur-fast) var(--ease-out);
}
.elem__row:hover { background: rgba(255, 255, 255, 0.04); }

.elem__sym {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  text-align: center;
  border: 1px solid rgba(255, 138, 61, 0.28);
  border-radius: 5px;
  background: var(--accent-soft);
  line-height: 1.7;
}
.elem__name { font-size: 12px; color: var(--text-mute); }
.elem__role { font-size: 12.5px; line-height: 1.65; color: var(--text-dim); }

.mat-foot {
  margin-top: auto;
  padding-top: 14px;
  font-size: 11px;
  color: var(--text-mute);
  border-top: 1px solid var(--hair);
}

.apps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}
.chip {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--text-dim);
  border: 1px solid var(--hair-strong);
  background: rgba(255, 255, 255, 0.035);
}

/* ==========================================================================
   F. 交付与服务（前后堆叠层次）
   ========================================================================== */

.stacked-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  /* 允许卡片抬起时不被裁切 */
  padding-block: 14px;
}

.svc {
  position: relative;
  padding: 20px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  /* 默认略微下沉，形成错位堆叠 */
  transform: translateY(6px);
}

/* 中间那张"抬起来"，压住相邻两张的边，产生前后层次 */
.svc--raised {
  transform: translateY(-8px);
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(255, 107, 44, 0.10), transparent 60%),
    var(--glass-bg-deep);
  border-color: rgba(255, 138, 61, 0.24);
  box-shadow:
    var(--glass-inner),
    0 20px 60px -20px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(255, 107, 44, 0.12);
}
.svc--raised:hover { transform: translateY(-14px); }
.svc:hover { transform: translateY(-2px); }

.svc__idx {
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--text-mute);
  opacity: 0.7;
}

.svc__icon {
  width: 32px; height: 32px;
  border-radius: 8px;
}

.svc__title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.svc__desc {
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--text-mute);
}

/* ==========================================================================
   G. 联系区
   ========================================================================== */

.contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(24px, 4vw, 56px);
  padding: clamp(24px, 3.4vw, 44px);
  align-items: center;
  border-radius: var(--radius-lg);
}

.contact__title {
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.22;
}

.contact__meta {
  display: grid;
  gap: 0;
  margin-top: 26px;
  border-top: 1px solid var(--hair);
}
.contact__meta li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--hair);
  font-size: 13px;
}
.contact__k { color: var(--text-mute); font-size: 12px; }
.contact__v { color: var(--text-dim); }

.vcard {
  padding: 22px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--hair-strong);
  box-shadow: var(--glass-inner);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

.vcard__label { font-size: 9px; letter-spacing: 0.2em; color: var(--text-mute); }
.vcard__name {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-top: 6px;
  line-height: 1.1;
}
.vcard__role { font-size: 11.5px; color: var(--text-mute); margin-top: 2px; }

.vcard__rows {
  display: grid;
  gap: 2px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--hair);
}
.vcard__row {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 8px;
  border-radius: var(--radius-xs);
  font-size: 12.5px;
  color: var(--text-dim);
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}
.vcard__row svg { width: 15px; height: 15px; color: var(--text-mute); }
.vcard__row em {
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-mute);
}
a.vcard__row:hover { background: rgba(255, 255, 255, 0.05); color: var(--text); }
.vcard__row--static { cursor: default; }

.vcard__btn {
  width: 100%;
  justify-content: center;
  margin-top: 14px;
}

.vcard__hint {
  margin-top: 10px;
  font-size: 10.5px;
  line-height: 1.6;
  color: var(--text-mute);
  text-align: center;
}

/* ==========================================================================
   H. 页脚
   ========================================================================== */

.foot {
  padding-block: 40px 36px;
  border-top: 1px solid var(--hair);
  margin-top: 20px;
}

.foot__top {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(20px, 4vw, 64px);
  align-items: start;
}

.foot__brand {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--accent);
}
.foot__brand .brand__mark { margin-top: 3px; }
.foot__name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}
.foot__brand .tiny { margin-top: 3px; }

.foot__disc {
  font-size: 11.5px;
  line-height: 1.85;
  color: var(--text-mute);
  max-width: 62em;
}

.foot__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 28px;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-mute);
}

/* ==========================================================================
   I. 响应式
   ========================================================================== */

@media (max-width: 1120px) {
  .overview__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .ov-card--wide { grid-column: span 4; }
  .ov-card { grid-column: span 2; }
  .material__grid { grid-template-columns: 1fr 1fr; }
  .material__grid > :first-child { grid-column: span 2; }
  .stacked-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .svc--raised { transform: none; }
  .svc:hover { transform: translateY(-4px); }
  .svc--raised:hover { transform: translateY(-4px); }
}

@media (max-width: 900px) {
  .ov-split { grid-template-columns: 1fr; gap: 16px; justify-items: center; }
  .ring-wrap { max-width: 180px; }
  .legend { width: 100%; }
  .contact__inner { grid-template-columns: 1fr; }
  .foot__top { grid-template-columns: 1fr; }
  .apps { grid-template-columns: 1fr; }
  .matrix { grid-template-columns: 34px repeat(10, minmax(0, 1fr)); gap: 2px; }
  .mx__dot { font-size: 8px; }
}

@media (max-width: 720px) {
  .overview__grid { grid-template-columns: 1fr 1fr; }
  .ov-card, .ov-card--wide, .ov-card--narrow { grid-column: span 2; }
  .material__grid { grid-template-columns: 1fr; }
  .material__grid > :first-child { grid-column: span 1; }
  .stacked-row { grid-template-columns: 1fr 1fr; }
  .profile { height: 140px; }
  .stack__caption { display: none; }
  .tbl { font-size: 12px; }
  .tbl thead th, .tbl tbody td { padding: 9px 8px; }
  .tbl thead th:first-child, .tbl tbody td:first-child { padding-left: 12px; }
}

@media (max-width: 480px) {
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .mini-stats { grid-template-columns: 1fr 1fr; }
  .mini-stats .mini:last-child { grid-column: span 2; }
  .stacked-row { grid-template-columns: 1fr; }
  .tbl-scroll { max-height: 380px; }
  .band__t { font-size: 26px; }
}