/* ========================================================
   产品介绍页 — 共享样式 (与 case.css 同源,在其基础上扩展)
   ======================================================== */

/* ===== Product Hero ===== */
.product-hero {
  padding: 56px 0 88px;
  position: relative;
  overflow: hidden;
}
.product-hero::before {
  content: ""; position: absolute;
  top: 0; right: -240px;
  width: 580px; height: 580px;
  background: radial-gradient(circle at 50% 50%, rgba(255,87,34,0.08), transparent 65%);
  border-radius: 50%; pointer-events: none;
}
.product-hero .container { position: relative; z-index: 2; }
.product-hero .meta-row {
  display: flex; gap: 14px; align-items: center;
  margin-bottom: 28px; flex-wrap: wrap;
}
.product-hero .pill {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  padding: 6px 12px; border: 1px solid var(--ink); color: var(--ink);
}
.product-hero .pill.accent { background: var(--ink); color: var(--paper); }
.product-hero .pill.flag {
  background: var(--accent); color: var(--paper); border-color: var(--accent);
}
.product-hero .module-tag {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-soft);
}
.product-hero h1 {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  font-size: clamp(42px, 6.4vw, 84px);
  line-height: 1.02; letter-spacing: -0.025em;
  color: var(--ink); max-width: 1000px; margin-bottom: 28px;
}
.product-hero h1 .it { font-style: italic; font-variation-settings: "opsz" 144, "SOFT" 80; }
.product-hero h1 .accent { color: var(--accent); }
.product-hero .lead {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: clamp(18px, 1.6vw, 22px); line-height: 1.6;
  color: var(--ink-soft); max-width: 780px; margin-bottom: 44px;
}
.product-hero .lead em { color: var(--ink); font-style: italic; }

.product-hero .hero-cta {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 56px;
}

/* Hero diagram canvas — inline SVG container */
.hero-canvas {
  width: 100%;
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 56px 48px;
  position: relative;
  overflow: hidden;
}
.hero-canvas::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(11,30,63,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,30,63,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.hero-canvas > * { position: relative; z-index: 1; }

/* ===== Capability strip ===== */
.cap-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink);
  margin-top: 8px;
}
.cap-strip > div {
  padding: 32px 28px; border-right: 1px solid var(--line);
}
.cap-strip > div:last-child { border-right: 0; }
.cap-strip .csk {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.cap-strip h4 {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 96, "SOFT" 30;
  font-size: 22px; line-height: 1.25;
  color: var(--ink); margin-bottom: 8px; letter-spacing: -0.01em;
}
.cap-strip p { font-size: 13.5px; line-height: 1.7; color: var(--ink-soft); }

/* ===== Feature wall ===== */
.feature-wall {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.feature-cell {
  background: var(--paper); padding: 36px 32px;
  display: flex; flex-direction: column; gap: 16px;
  transition: background .25s;
  position: relative;
}
.feature-cell:hover { background: var(--paper-2); }
.feature-cell .fnum {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; color: var(--ink-mute);
}
.feature-cell .ficon {
  width: 44px; height: 44px;
  border: 1px solid var(--ink);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink); transition: all .3s;
}
.feature-cell:hover .ficon { background: var(--ink); color: var(--paper); }
.feature-cell .ficon svg { width: 22px; height: 22px; }
.feature-cell h4 {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 96, "SOFT" 30;
  font-size: 21px; line-height: 1.3;
  color: var(--ink); letter-spacing: -0.01em;
}
.feature-cell p {
  font-size: 14.5px; line-height: 1.75;
  color: var(--ink-soft);
}
.feature-cell .tags {
  display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto;
  padding-top: 8px;
}
.feature-cell .tags span {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.08em; color: var(--ink-soft);
  padding: 3px 8px; background: var(--paper-3);
}

/* ===== Architecture stack ===== */
.arch-stack {
  display: flex; flex-direction: column; gap: 12px;
  background: var(--paper-2);
  padding: 36px;
  border: 1px solid var(--line);
}
.arch-layer {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 24px 28px;
  display: grid; grid-template-columns: 200px 1fr;
  gap: 32px; align-items: center;
  transition: all .25s;
}
.arch-layer:hover { border-color: var(--ink); }
.arch-layer .lbl-block {
  display: flex; flex-direction: column; gap: 6px;
}
.arch-layer .lcode {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; color: var(--accent);
}
.arch-layer .lname {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 96;
  font-size: 19px; color: var(--ink); letter-spacing: -0.01em;
}
.arch-layer .litems {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.arch-layer .litems span {
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  padding: 6px 12px; border: 1px solid var(--line);
  background: var(--paper-2); color: var(--ink-2);
  transition: all .2s;
}
.arch-layer .litems span:hover { border-color: var(--ink); background: var(--paper); }
.arch-layer.accent { border-color: var(--ink); background: var(--ink); color: var(--paper); }
.arch-layer.accent .lname { color: var(--paper); }
.arch-layer.accent .lcode { color: var(--accent); }
.arch-layer.accent .litems span {
  background: rgba(255,255,255,0.05); color: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.18);
}

/* ===== Scenario rows ===== */
.scenario-row {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.scn-card {
  background: var(--paper); padding: 40px 36px;
  display: flex; flex-direction: column; gap: 16px;
  transition: background .25s;
}
.scn-card:hover { background: var(--paper-2); }
.scn-card .scn-vol {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent);
  display: inline-flex; align-items: center; gap: 12px;
}
.scn-card .scn-vol::before {
  content: ""; width: 28px; height: 1px; background: currentColor;
}
.scn-card h4 {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 96, "SOFT" 30;
  font-size: 24px; line-height: 1.28;
  color: var(--ink); letter-spacing: -0.01em;
}
.scn-card .scn-desc {
  font-size: 15px; line-height: 1.8; color: var(--ink-soft);
}
.scn-card .scn-quote {
  font-family: var(--serif); font-style: italic;
  font-size: 14.5px; line-height: 1.7; color: var(--ink);
  padding: 14px 18px; background: var(--paper-3);
  border-left: 2px solid var(--accent);
  margin-top: auto;
}

/* ===== Tech matrix ===== */
.tech-matrix {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.tech-cell {
  background: var(--paper); padding: 24px 22px;
  display: flex; flex-direction: column; gap: 8px;
  text-align: center; align-items: center;
}
.tech-cell .tcat {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-mute);
}
.tech-cell .tname {
  font-family: var(--serif); font-weight: 500;
  font-size: 18px; color: var(--ink);
  font-variation-settings: "opsz" 96;
}
.tech-cell .tdesc {
  font-size: 12.5px; line-height: 1.6; color: var(--ink-soft);
}

/* ===== Big number row ===== */
.big-num-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink);
  margin: 12px 0 0;
}
.big-num-row > div {
  padding: 36px 24px; border-right: 1px solid var(--line);
  text-align: left;
}
.big-num-row > div:last-child { border-right: 0; }
.big-num-row .n {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 144;
  font-size: clamp(40px, 5vw, 60px); letter-spacing: -0.035em;
  line-height: 1; color: var(--ink); margin-bottom: 10px;
}
.big-num-row .n .u {
  font-size: 18px; color: var(--ink-soft); margin-left: 4px; letter-spacing: 0;
}
.big-num-row .lbl {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-soft);
}

/* ===== Workflow rail (横向流程) ===== */
.workflow-rail {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
  position: relative;
}
.wf-step {
  background: var(--paper); padding: 32px 28px;
  display: flex; flex-direction: column; gap: 14px;
  position: relative;
}
.wf-step .wf-num {
  font-family: var(--serif); font-style: italic;
  font-variation-settings: "opsz" 144;
  font-size: 38px; color: var(--accent); line-height: 1;
  letter-spacing: -0.03em;
}
.wf-step h4 {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 96, "SOFT" 30;
  font-size: 19px; color: var(--ink);
  letter-spacing: -0.01em;
}
.wf-step p {
  font-size: 13.5px; line-height: 1.75; color: var(--ink-soft);
}

/* ===== Compare table (产品对比) ===== */
.compare-table {
  width: 100%; border-collapse: collapse;
  border: 1px solid var(--line);
  background: var(--paper);
}
.compare-table th,
.compare-table td {
  padding: 18px 22px; text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.compare-table thead th {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--ink);
  background: var(--paper-2);
}
.compare-table tbody td:first-child {
  font-weight: 500; color: var(--ink);
}
.compare-table tbody tr:last-child td { border-bottom: 0; }
.compare-table .yes { color: var(--green); font-weight: 600; }
.compare-table .no { color: var(--ink-mute); }

/* ===== Sibling nav ===== */
.sibling-nav {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.sib-card {
  background: var(--paper); padding: 28px 28px;
  display: flex; flex-direction: column; gap: 10px;
  transition: background .25s;
  position: relative;
}
.sib-card:hover { background: var(--paper-2); }
.sib-card .sk {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-mute);
}
.sib-card h4 {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 96, "SOFT" 30;
  font-size: 20px; color: var(--ink); letter-spacing: -0.01em;
}
.sib-card .desc {
  font-size: 13.5px; line-height: 1.7; color: var(--ink-soft);
}
.sib-card .arr {
  font-family: var(--serif); font-size: 28px; color: var(--ink-mute);
  margin-top: auto; transition: transform .3s, color .3s;
}
.sib-card:hover .arr { color: var(--accent); transform: translateX(6px); }

/* ===== Inline diagram styles (shared) ===== */
.diag-grid-bg {
  background-image:
    linear-gradient(rgba(11,30,63,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,30,63,0.05) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ===== Pricing CTA banner inline ===== */
.inline-cta {
  background: var(--ink); color: var(--paper);
  padding: 48px 56px;
  display: grid; grid-template-columns: 1.4fr 1fr;
  gap: 32px; align-items: center;
  margin-top: 56px;
}
.inline-cta h3 {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  font-size: 28px; line-height: 1.2; letter-spacing: -0.015em;
  margin-bottom: 8px;
}
.inline-cta h3 .it { font-style: italic; font-variation-settings: "opsz" 144, "SOFT" 80; }
.inline-cta p {
  color: rgba(255,255,255,0.7); font-size: 14.5px; line-height: 1.7;
}
.inline-cta .ic-actions {
  display: flex; gap: 12px; justify-content: flex-end; flex-wrap: wrap;
}
.inline-cta .btn-primary { background: var(--accent); border-color: var(--accent); }
.inline-cta .btn-primary:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.inline-cta .btn-outline { color: var(--paper); border-color: rgba(255,255,255,0.4); }
.inline-cta .btn-outline:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }

/* ===== Responsive ===== */
@media (max-width: 1080px) {
  .feature-wall { grid-template-columns: repeat(2, 1fr); }
  .cap-strip { grid-template-columns: repeat(2, 1fr); }
  .cap-strip > div:nth-child(2) { border-right: 0; }
  .tech-matrix { grid-template-columns: repeat(2, 1fr); }
  .workflow-rail { grid-template-columns: repeat(2, 1fr); }
  .big-num-row { grid-template-columns: repeat(2, 1fr); }
  .big-num-row > div:nth-child(2) { border-right: 0; }
  .scenario-row { grid-template-columns: 1fr; }
  .arch-layer { grid-template-columns: 1fr; gap: 12px; }
  .sibling-nav { grid-template-columns: 1fr; }
  .inline-cta { grid-template-columns: 1fr; }
  .inline-cta .ic-actions { justify-content: flex-start; }
}
@media (max-width: 640px) {
  .product-hero { padding: 24px 0 48px; }
  .product-hero .lead { font-size: 16px; margin-bottom: 28px; }
  .product-hero .meta-row { gap: 8px; margin-bottom: 20px; }
  .product-hero .hero-cta { gap: 10px; margin-bottom: 36px; }
  .hero-canvas { padding: 18px 14px; }
  .feature-wall { grid-template-columns: 1fr; }
  .feature-cell { padding: 28px 22px; gap: 12px; }
  .feature-cell h4 { font-size: 19px; }
  .feature-cell p { font-size: 14px; }
  .cap-strip { grid-template-columns: 1fr; }
  .cap-strip > div { border-right: 0; border-bottom: 1px solid var(--line); padding: 24px 22px; }
  .cap-strip > div:last-child { border-bottom: 0; }
  .cap-strip h4 { font-size: 20px; }
  .tech-matrix { grid-template-columns: 1fr; }
  .tech-cell { padding: 20px 18px; }
  .workflow-rail { grid-template-columns: 1fr; }
  .wf-step { padding: 24px 22px; gap: 10px; }
  .wf-step .wf-num { font-size: 32px; }
  .wf-step h4 { font-size: 18px; }
  .big-num-row { grid-template-columns: 1fr; }
  .big-num-row > div { border-right: 0; border-bottom: 1px solid var(--line); padding: 28px 22px; }
  .big-num-row > div:last-child { border-bottom: 0; }
  .scn-card { padding: 28px 24px; gap: 12px; }
  .scn-card h4 { font-size: 21px; }
  .scn-card .scn-desc { font-size: 14.5px; line-height: 1.75; }
  .arch-stack { padding: 22px; gap: 10px; }
  .arch-layer { padding: 20px 22px; }
  .arch-layer .lname { font-size: 17px; }
  .sib-card { padding: 24px 22px; }
  .sib-card h4 { font-size: 18px; }
  .inline-cta { padding: 28px 22px; gap: 20px; margin-top: 40px; }
  .inline-cta h3 { font-size: 22px; }
  .inline-cta p { font-size: 14px; }
  .inline-cta .ic-actions { gap: 10px; }
  .product-hero h1 { font-size: 36px; }
  .table-scroll { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .table-scroll .compare-table { min-width: 560px; }
  .compare-table th, .compare-table td { padding: 12px 10px; font-size: 12.5px; }
}
@media (max-width: 420px) {
  .product-hero h1 { font-size: 30px; }
  .hero-canvas { padding: 14px 10px; }
  .deck-card h3, .scn-card h4 { font-size: 19px; }
  .inline-cta h3 { font-size: 20px; }
}

/* ========================================================
   产品功能优化新增样式 (依据「产品功能部分」Word 需求)
   ======================================================== */

/* 删除章节副标题后：sec-head 单列占满 */
.sec-head:not(:has(.sec-lead)) { grid-template-columns: 1fr; }

/* ===== 箭头式流程 (工作流程改箭头) ===== */
.flow-arrow {
  display: flex; align-items: flex-start; justify-content: center;
  gap: 4px; flex-wrap: nowrap;
}
.flow-node {
  flex: 1 1 0; min-width: 0;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 16px; padding: 8px 12px;
}
.flow-node .fa-circle {
  width: 66px; height: 66px; border-radius: 50%; flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-weight: 600; font-size: 27px;
  color: #fff; line-height: 1;
}
.fa-circle.g1 { background: linear-gradient(135deg,#5B6CF6,#8B5CF6); box-shadow: 0 12px 26px rgba(91,108,246,.26); }
.fa-circle.g2 { background: linear-gradient(135deg,#8B5CF6,#C44BC9); box-shadow: 0 12px 26px rgba(150,80,210,.26); }
.fa-circle.g3 { background: linear-gradient(135deg,#D6489A,#FF5722); box-shadow: 0 12px 26px rgba(224,72,120,.26); }
.fa-circle.g4 { background: linear-gradient(135deg,#FF5722,#FF8A3D); box-shadow: 0 12px 26px rgba(255,87,34,.26); }
.flow-node .fa-text { display: flex; flex-direction: column; gap: 8px; align-items: center; }
.flow-node h4 {
  font-family: var(--serif); font-weight: 500;
  font-variation-settings: "opsz" 96, "SOFT" 30;
  font-size: 19px; color: var(--ink); letter-spacing: -0.01em; line-height: 1.3;
}
.flow-node p { font-size: 13.5px; line-height: 1.75; color: var(--ink-soft); }
.flow-sep {
  flex: 0 0 auto; align-self: flex-start; margin-top: 26px;
  color: var(--accent); font-size: 30px; line-height: 1; font-family: var(--sans);
}

/* ===== 典型场景 — 行业要点卡 ===== */
.scn-card .scn-points { display: flex; flex-direction: column; gap: 9px; margin: 2px 0; padding: 0; }
.scn-card .scn-points li {
  font-size: 14px; line-height: 1.6; color: var(--ink-soft);
  padding-left: 18px; position: relative; list-style: none;
}
.scn-card .scn-points li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 6px; height: 6px; background: var(--accent); border-radius: 50%;
}
.scn-card .scn-flow {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.02em;
  color: var(--ink); background: var(--paper-3);
  padding: 11px 14px; margin-top: auto; border-left: 2px solid var(--accent);
}

/* ===== 其他能力模块 — 去序号、产品名居中放大 ===== */
.sibling-nav .sib-card { align-items: center; text-align: center; padding: 38px 28px; gap: 14px; }
.sibling-nav .sib-card h4 { font-size: 27px; }
.sibling-nav .sib-card .desc { font-size: 14px; max-width: 280px; }

/* ===== 产品价格 (收费标准) ===== */
.prod-pricing {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1px; background: var(--line); border: 1px solid var(--line);
}
.pp-tier {
  background: var(--paper); padding: 44px 40px;
  display: flex; flex-direction: column; gap: 18px; position: relative;
}
.pp-tier.pro { background: var(--paper-2); }
.pp-badge {
  position: absolute; top: 28px; right: 32px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; background: var(--accent); color: #fff; padding: 4px 11px;
}
.pp-top { display: flex; align-items: baseline; gap: 12px; }
.pp-name { font-family: var(--serif); font-weight: 500; font-size: 25px; color: var(--ink); letter-spacing: -0.01em; }
.pp-en { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); }
.pp-price { font-family: var(--serif); font-weight: 500; font-variation-settings: "opsz" 144; color: var(--ink); letter-spacing: -0.03em; line-height: 1; }
.pp-price .cur { font-size: 26px; margin-right: 4px; }
.pp-price .amt { font-size: 58px; }
.pp-price .unit { font-size: 15px; color: var(--ink-soft); margin-left: 8px; font-family: var(--sans); letter-spacing: 0; }
.pp-fit { font-size: 13.5px; line-height: 1.7; color: var(--ink-soft); padding: 14px 16px; background: var(--paper-3); }
.pp-tier.pro .pp-fit { background: var(--paper); }
.pp-fit b { color: var(--ink); font-weight: 600; }
.pp-sub { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); margin-top: 4px; }
.pp-feat { display: flex; flex-direction: column; gap: 10px; margin: 0; padding: 0; }
.pp-feat li { font-size: 13.5px; line-height: 1.55; color: var(--ink-soft); padding-left: 22px; position: relative; list-style: none; }
.pp-feat li::before { content: "→"; position: absolute; left: 0; color: var(--accent); }
.pp-services { border: 1px solid var(--line); border-top: 0; background: var(--paper); padding: 28px 36px; }
.pp-services .pps-head { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 16px; }
.pp-services ul { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 32px; margin: 0; padding: 0; }
.pp-services li { font-size: 13.5px; line-height: 1.6; color: var(--ink-soft); padding-left: 22px; position: relative; list-style: none; }
.pp-services li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }
.pp-note { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-mute); margin-top: 22px; text-align: center; }

/* ===== 联系方式 ===== */
.contact-band { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cb-card { background: var(--paper); padding: 38px 40px; display: flex; align-items: center; gap: 22px; transition: background .25s; }
.cb-card:hover { background: var(--paper-2); }
.cb-icon { width: 56px; height: 56px; flex: 0 0 auto; border: 1px solid var(--ink); display: inline-flex; align-items: center; justify-content: center; color: var(--ink); transition: all .3s; }
.cb-card:hover .cb-icon { background: var(--ink); color: var(--paper); }
.cb-icon svg { width: 26px; height: 26px; }
.cb-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-mute); margin-bottom: 8px; }
.cb-value { font-family: var(--serif); font-weight: 500; font-size: 25px; color: var(--ink); letter-spacing: -0.01em; }

/* ===== 新增模块响应式 ===== */
@media (max-width: 1080px) {
  .prod-pricing { grid-template-columns: 1fr; }
  .contact-band { grid-template-columns: 1fr; }
  .flow-arrow { flex-direction: column; align-items: stretch; gap: 0; }
  .flow-node { flex-direction: row; text-align: left; align-items: flex-start; gap: 18px; padding: 18px 8px; }
  .flow-node .fa-text { align-items: flex-start; }
  .flow-sep { align-self: center; margin: 2px 0; transform: rotate(90deg); }
  .pp-services ul { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .pp-tier { padding: 30px 24px; }
  .pp-price .amt { font-size: 46px; }
  .pp-services { padding: 24px 22px; }
  .cb-card { padding: 26px 22px; gap: 16px; }
  .cb-value { font-size: 21px; }
  .sibling-nav .sib-card h4 { font-size: 23px; }
  .flow-node .fa-circle { width: 56px; height: 56px; font-size: 23px; }
}