/* Li-dream — B2B & OEM 页 /b2b/（2026-10-13 视觉改版第一批，规格 docs/superpowers/specs/2026-10-13-visual-redesign-design.md §4.2）。
   只在 /b2b/ 加载（b2b.html {% block head %}），排在 site.css、vis.css 之后。外观从高保真稿
   docs/reference/visual-redesign-20261013/hifi-b2b.html 移植，令牌换成 site.css 的 :root（对照表见 vis.css 文件头）：
   Task 10：页头（第 80–103 行 .hero* .crumbs .plate* → .b2h*；不要 .plate__cap）、方式卡（第 104–124 行 .tiles .tile* → .b2h__tiles .b2t*；
   不要 .tile__go）、起订量读数格在 vis.css（.vlog，这里只写深色底配色）、小插图动画（第 131–141 行 .ti-*，infinite 改 3 轮
   + both，每轮正向，关键帧 100% 是可见终态：落定、画完、显示您的标志）、合作方式选择面板（第 143–251 行 .ways .modebar .mode* .viewsw .studio*
   .scene .sc .scctl .info* .rdg .rd* .svc .cmp* → .bw*；不要 .hud / .hud2，「示意 · 非实际比例」是 .bw__ill；小甘特在 vis.css .vlead）、
   响应式（第 501–598 行，断点换成站点的 1200 / 1024 / 768）。
   Task 11：货运之路（第 253–351 行 .route* .rail* .mapbox .mapfit .legend .st* .termtag .card* .wl .tok .docs .doc .qs .qsheet .moqt*
   .note .pay* .c9 .dd .resp* → .br*；.gt* 由 vis.css .vlead 代替；付款条光泽 infinite 改 3 轮 + both；响应式第 501–598 行同样改名）。
   高保真稿的 .drop 与 site.css 页头下拉菜单 .drop 重名 → 场景里叫 .sc-drop。
   Task 12：工厂翻转卡与品牌卡（第 353–429 行 → .bfac .bf* .bb*）、FAQ + 询价（第 432–490 行 → .bl* .b2v*），见各自段首。
   服务端输出全部可见：三块面板与对比表依次排列；b2b-page.js 给 [data-chooser] 加 .is-tabs（只显示当前面板）/ .is-cmp（只显示对比表）。 */

/* ================================================================== 页头 */
.b2h { color: var(--on-dark); overflow: hidden; background: #0f1012; padding: 30px 0 70px; }
.b2h > .b2h__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.b2h__bg img { position: absolute; right: -4%; top: 0; width: 68%; height: 100%; max-width: none; object-fit: cover;
  filter: grayscale(.5) contrast(1.1) brightness(.5); opacity: .5;
  -webkit-mask-image: radial-gradient(60% 70% at 60% 35%, #000 30%, transparent 100%); mask-image: radial-gradient(60% 70% at 60% 35%, #000 30%, transparent 100%); }
.b2h__bg::before { content: ""; position: absolute; inset: 0; z-index: 1; background:
  radial-gradient(900px 520px at 78% 8%, rgba(242, 163, 58, .16), transparent 62%),
  radial-gradient(700px 600px at -10% 110%, rgba(90, 110, 140, .2), transparent 60%),
  linear-gradient(180deg, rgba(15, 16, 18, .2), rgba(15, 16, 18, .65) 70%, #0f1012); }
.b2h__bg::after { content: ""; position: absolute; inset: 0; z-index: 1; opacity: .5;
  background-image: linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(70% 80% at 30% 30%, #000, transparent 75%); mask-image: radial-gradient(70% 80% at 30% 30%, #000, transparent 75%); }
.b2h .crumbs { margin: 0 0 46px; padding: 0; font-size: 12.5px; }
.b2h__top { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: 56px; align-items: end; }
.b2h__title { font: 600 clamp(56px, 8.4vw, 116px)/.92 var(--font-figure); letter-spacing: -.01em; margin: 20px 0 26px; overflow-wrap: break-word;
  background: linear-gradient(180deg, #fff 30%, #c9c7c1); -webkit-background-clip: text; background-clip: text; color: transparent; }
.b2h__title em { font-style: normal; background: linear-gradient(180deg, #ffc66b, var(--amber) 60%, #d98a22); -webkit-background-clip: text; background-clip: text; color: transparent; }
.b2h__lead { font-size: 17px; max-width: 600px; color: #c6c8cc; margin: 0; }
.b2h__ctas { display: flex; gap: 12px; margin: 30px 0 0; flex-wrap: wrap; }

/* 页头与面板里的按钮：高保真稿的胶囊形琥珀渐变 + 内高光 + 投影，幽灵按钮是细描边 */
.b2h .btn, .bw .btn { border-radius: var(--r-pill); white-space: normal; text-align: center; line-height: 1.15;
  transition: transform .3s var(--vis-ease), box-shadow .3s var(--vis-ease), background-color .3s; }
.b2h .btn--lg, .bw .btn--lg { height: auto; min-height: 52px; padding: 8px 26px; font-size: 15px; }
.b2h .btn--amber, .bw .btn--amber { border: 0; background: linear-gradient(180deg, var(--amber-hi), var(--amber)); color: var(--amber-ink);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .35) inset, 0 10px 24px -12px rgba(242, 163, 58, .75); }
.b2h .btn--amber:hover, .bw .btn--amber:hover { transform: translateY(-1px); box-shadow: 0 1px 0 rgba(255, 255, 255, .35) inset, 0 16px 30px -12px rgba(242, 163, 58, .85); }
.b2h .btn--amber::after, .bw .btn--amber::after { content: ""; flex: none; width: 16px; height: 16px; background: currentColor; transition: transform .3s var(--vis-ease);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 8h10M9 4l4 4-4 4'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 8h10M9 4l4 4-4 4'/%3E%3C/svg%3E") center / contain no-repeat; }
.b2h .btn--amber:hover::after, .bw .btn--amber:hover::after { transform: translateX(3px); }
.b2h .btn--ghost-light { border: 0; background: rgba(255, 255, 255, .04); color: var(--on-dark); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14); }
.b2h .btn--ghost-light:hover { background: rgba(255, 255, 255, .08); }

/* 铭牌：品牌数 / 工厂数 / 交付条件 / 发运 */
.b2h__plate { border-top: 2px solid var(--on-dark); margin: 0; display: grid; }
.b2h__plate > div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 16px; padding: 13px 0; border-bottom: 1px solid rgba(255, 255, 255, .14); align-items: baseline; }
.b2h__plate dt { font: 600 11px/1.3 var(--font-figure); letter-spacing: .16em; text-transform: uppercase; color: var(--on-dark-3); overflow-wrap: anywhere; }
.b2h__plate dd { margin: 0; font-size: 14px; color: var(--on-dark-2); }
.b2h__plate dd b { font: 500 24px/1 var(--font-figure); color: var(--on-dark); margin-right: 8px; letter-spacing: .01em; }

/* 三块方式卡（锚点；JS 升级为「切到该方式并滚过去」） */
.b2h__tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 64px; }
.b2t { position: relative; display: flex; flex-direction: column; min-height: 330px; padding: 24px 24px 22px; border-radius: 20px; overflow: hidden; color: var(--on-dark); text-decoration: none; isolation: isolate;
  background: linear-gradient(180deg, rgba(38, 39, 44, .92), rgba(22, 23, 26, .94));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .07), inset 0 0 0 1px rgba(255, 255, 255, .06), 0 40px 70px -40px rgba(0, 0, 0, .9);
  transition: transform .5s var(--vis-ease), box-shadow .5s var(--vis-ease); }
.b2t::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none; opacity: 0; transition: opacity .5s;
  background: linear-gradient(140deg, rgba(242, 163, 58, 0), rgba(242, 163, 58, 0) 40%, rgba(242, 163, 58, .55));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.b2t::after { content: ""; position: absolute; z-index: -1; width: 340px; height: 340px; right: -120px; top: -140px; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(242, 163, 58, .18), transparent 65%); opacity: .5; transition: opacity .5s, transform .8s var(--vis-ease); }
.b2t:hover { transform: translateY(-4px); }
.b2t:hover::before { opacity: 1; }
.b2t:hover::after { opacity: 1; transform: translate(-20px, 20px); }
.b2t:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }
.b2t__ill { position: absolute; right: -6px; top: 30px; width: 52%; height: 170px; pointer-events: none; overflow: visible; }
.b2t__no { display: block; font: 600 12px/1 var(--font-figure); letter-spacing: .16em; color: var(--amber); }
.b2t__no b { font-weight: 600; }
.b2t__title { display: block; max-width: 52%; margin-top: 20px; font: 600 26px/1.1 var(--font-figure); color: var(--on-dark); overflow-wrap: break-word; hyphens: auto; }
.b2t__text { display: block; margin: auto 0 18px; padding-top: 118px; max-width: 250px; font-size: 13.5px; line-height: 1.55; color: var(--on-dark-2); }
.b2t__moq { display: block; border-top: 1px solid rgba(255, 255, 255, .14); padding-top: 16px; }
.b2t__lbl { display: block; font: 600 10.5px/1.2 var(--font-figure); letter-spacing: .16em; color: var(--on-dark-3); text-transform: uppercase; margin-bottom: 9px; }
.b2t__num { display: block; font: 500 46px/.9 var(--font-figure); color: var(--on-dark); letter-spacing: -.01em; }
.b2t__num small { font: 500 14px var(--font); color: var(--on-dark-3); margin-left: 6px; letter-spacing: 0; }
.b2t .vlog__ticks { color: var(--on-dark-3); }

/* 小插图动画（D8）：最多 3 轮、每轮正向，关键帧 100% 是可见终态（落定、画完、显示您的标志），both 停在那里 */
.ti-drop { animation: tdrop 4.8s var(--vis-ease) 3 both; }
@keyframes tdrop { 0%, 12% { transform: translateY(-26px); opacity: 0; } 26%, 100% { transform: none; opacity: 1; } }
.ti-swapA { animation: tswA 5s ease-in-out 3 both; }
.ti-swapB { animation: tswB 5s ease-in-out 3 both; }
@keyframes tswA { 0%, 40% { opacity: 1; } 50%, 100% { opacity: 0; } }
@keyframes tswB { 0%, 40% { opacity: 0; } 50%, 100% { opacity: 1; } }
.ti-scan { animation: tscan 5s ease-in-out 3 both; }
@keyframes tscan { 0%, 38% { transform: translateX(-40px); opacity: 0; } 44% { opacity: 1; } 52%, 100% { transform: translateX(80px); opacity: 0; } }
.ti-draw { stroke-dasharray: 400; animation: tdraw 6s var(--vis-ease) 3 both; }
@keyframes tdraw { 0% { stroke-dashoffset: 400; } 45%, 100% { stroke-dashoffset: 0; } }
.ti-pulse { animation: tpulse 2.6s ease-in-out 3 both; }
@keyframes tpulse { 50% { opacity: .35; } }

/* ================================================================== 合作方式选择面板 */
.bw { position: relative; background: var(--paper); padding: 110px 0 120px; color: var(--ink); }
.bw::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(900px 500px at 85% 0%, rgba(242, 163, 58, .08), transparent 60%); }
.bw > .container { position: relative; }
.bw__head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: 40px; }
.bw__head .vsub { font-size: 15.5px; max-width: 560px; margin: 0; }

.bw__bar { display: flex; gap: 14px; align-items: stretch; margin-bottom: 18px; }
.bw__modes { flex: 1; display: flex; gap: 14px; min-width: 0; }
.bw__mode { flex: 1; min-width: 0; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 14px; padding: 16px 18px; border-radius: 16px;
  background: #fff; color: var(--ink); text-decoration: none; box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1), 0 1px 0 rgba(0, 0, 0, .02);
  transition: background .45s var(--vis-ease), box-shadow .45s var(--vis-ease); }
.bw__mode:hover { box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .18), 0 14px 30px -20px rgba(0, 0, 0, .35); }
.bw__mode:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.bw__n { font: 600 12px/1 var(--font-figure); letter-spacing: .14em; color: var(--subtle); width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .18); transition: background .45s, color .45s, box-shadow .45s; }
.bw__mt b { display: block; font: 600 18px/1.15 var(--font-figure); overflow-wrap: break-word; }
.bw__mt small { display: block; font-size: 12.5px; color: var(--muted); margin-top: 3px; line-height: 1.35; }
.bw__moq { font: 500 22px/1 var(--font-figure); color: var(--muted); text-align: right; }
.bw__moq em { display: block; font: 600 9px/1.25 var(--font-figure); letter-spacing: .12em; color: var(--subtle); font-style: normal; margin-top: 5px; text-transform: uppercase; max-width: 13em; }
.bw__mode[aria-selected="true"] { background: linear-gradient(180deg, #232428, #17181a); box-shadow: 0 22px 40px -22px rgba(0, 0, 0, .65), inset 0 1px 0 rgba(255, 255, 255, .07); }
.bw__mode[aria-selected="true"] .bw__mt b { color: #fff; }
.bw__mode[aria-selected="true"] .bw__mt small, .bw__mode[aria-selected="true"] .bw__moq em { color: var(--on-dark-3); }
.bw__mode[aria-selected="true"] .bw__moq { color: #ffc66b; }
.bw__mode[aria-selected="true"] .bw__n { background: var(--amber); color: var(--amber-ink); box-shadow: 0 0 18px -2px rgba(242, 163, 58, .7); }
.bw__mode[aria-selected="true"]:focus-visible { outline-color: var(--amber-deep); }

.bw__views { display: flex; align-items: center; gap: 4px; padding: 4px; border-radius: var(--r-pill); background: #fff; box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1); flex: none; align-self: center; }
.bw__views button { appearance: none; border: 0; background: transparent; cursor: pointer; padding: 10px 16px; border-radius: var(--r-pill); font: 600 13px/1.2 var(--font); color: var(--muted);
  display: flex; align-items: center; gap: 8px; transition: background-color .3s, color .3s; }
.bw__views button::before { content: ""; flex: none; width: 15px; height: 15px; background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.5'%3E%3Crect x='2' y='2.5' width='12' height='11' rx='2'/%3E%3Cpath d='M8 2.5v11'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.5'%3E%3Crect x='2' y='2.5' width='12' height='11' rx='2'/%3E%3Cpath d='M8 2.5v11'/%3E%3C/svg%3E") center / contain no-repeat; }
.bw__views button[data-view="cmp"]::before {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.5'%3E%3Cpath d='M2 4h12M2 8h12M2 12h12M6 2.5v11M10 2.5v11'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.5'%3E%3Cpath d='M2 4h12M2 8h12M2 12h12M6 2.5v11M10 2.5v11'/%3E%3C/svg%3E"); }
.bw__views button:hover { color: var(--ink); }
.bw__views button[aria-pressed="true"] { background: var(--ink); color: #fff; }

/* 工作台：三块面板（无 JS 依次排列，JS 后 .is-tabs 只显示当前）+ 对比表 */
.bw__studio { position: relative; border-radius: 26px; overflow: hidden; background: linear-gradient(180deg, #fdfdfb 0%, #f1f0ec 62%, #e8e7e2 100%);
  box-shadow: 0 1px 0 #fff inset, 0 0 0 1px rgba(23, 24, 26, .07), 0 60px 100px -60px rgba(30, 25, 15, .45); }
.bw__panel { display: grid; grid-template-columns: minmax(0, 1.28fr) minmax(0, 1fr); min-height: 620px; }
.bw__panel + .bw__panel, .bw__panel + .bw__cmp { border-top: 1px solid rgba(23, 24, 26, .1); }
.bw__studio.is-tabs .bw__panel[hidden], .bw__cmp[hidden] { display: none; }
.bw__studio.is-cmp .bw__panel { display: none; }
.bw__studio.is-tabs .bw__panel + .bw__cmp { border-top: 0; }

/* 场景：插图按 viewBox 比例占满栏宽、在栏里竖直居中；标注叠在插图上（≥ 1024 宽，百分比坐标相对 .bw__scene） */
.bw__scene { position: relative; container-type: inline-size; align-self: center; padding: 0; }
.bw__panel::before { content: ""; grid-area: 1 / 1; pointer-events: none;
  background-image: linear-gradient(rgba(23, 24, 26, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(23, 24, 26, .045) 1px, transparent 1px); background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(60% 55% at 50% 50%, #000, transparent); mask-image: radial-gradient(60% 55% at 50% 50%, #000, transparent); }
.bw__scene { grid-area: 1 / 1; }
.bw__info { grid-area: 1 / 2; }
.sc { position: relative; display: block; width: 100%; height: auto; overflow: visible; }
.vco--scene .vco__item { font-size: clamp(10.5px, 1.9cqw, 13px); }
.vco--scene { padding: 0 24px; }
.bw__odmh { margin: 10px 0 0; padding: 0 24px; font-size: 13px; line-height: 1.4; }
.bw__odmh b { display: block; font-weight: 600; color: var(--ink); }
.bw__odmh span { display: block; color: var(--muted); font-size: 12px; }
@media (min-width: 1024px) {
  /* 插图下面留一条 64px 的底栏放演示开关与「示意」说明（高保真稿里它们在插图框外）；标注图层只盖插图本身 */
  .bw__scene { padding-bottom: 64px; }
  .bw__scene > .vco { bottom: 64px; }
  .vco--scene { padding: 0; }
  .vco--scene .vco__item b, .vco--scene .vco__item span { text-shadow: 0 0 2px #f4f3ef, 0 0 4px #f4f3ef, 0 0 8px rgba(244, 243, 239, .9); }
  /* 文字块长在引线背面（build_site.B2B_SCENE_CALLOUTS 的 grow）：向上长的条目 y 是块底 */
  .vco--scene .vco__item--up { transform: translateY(-100%); }
  /* 说明压在图纸上沿（viewBox y = 86）之上：底边对齐图纸上沿，长译文多行时向上长；--y 只给窄屏以外的参考 */
  .bw__odmh { position: absolute; left: var(--x); top: calc((100% - 64px) * .1654); transform: translateY(calc(-100% - 6px)); margin: 0; padding: 0; max-width: 50%; font-size: clamp(11px, 1.9cqw, 13px); }
  .bw__odmh span { font-size: .85em; }
}
.bw__ctl { position: absolute; left: 26px; bottom: 12px; z-index: 3; display: flex; gap: 4px; padding: 4px; border-radius: var(--r-pill); max-width: calc(100% - 52px);
  background: rgba(255, 255, 255, .75); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1), 0 10px 24px -16px rgba(0, 0, 0, .4); }
.bw__ctl button { appearance: none; border: 0; background: transparent; cursor: pointer; padding: 7px 12px; border-radius: var(--r-pill); font: 600 12px/1.2 var(--font); color: var(--muted);
  display: flex; gap: 6px; align-items: center; white-space: nowrap; transition: background-color .3s, color .3s; }
.bw__ctl button i { font: 600 10px/1 var(--font-figure); font-style: normal; color: var(--subtle); }
.bw__ctl button:hover { color: var(--ink); }
.bw__ctl button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.bw__ctl button[aria-pressed="true"] i { color: var(--amber); }
.bw__ill { position: absolute; right: 24px; bottom: 26px; z-index: 2; margin: 0; display: flex; align-items: center; gap: 10px;
  font: 600 9.5px/1.2 var(--font-figure); letter-spacing: .2em; text-transform: uppercase; color: var(--subtle); }
.bw__ill::before { content: ""; flex: none; width: 60px; height: 6px; border: 1px solid currentColor; border-top: 0; opacity: .7; }

/* 场景动效：切到面板时纸箱 / 包装落下（.is-play 由 b2b-page.js 加）；OEM 换标；ODM 图纸 → 原型 → 样品 */
.bw__panel.is-play .sc-drop { animation: b2b-drop .7s var(--vis-ease) both; animation-delay: calc(var(--i) * 90ms); }
@keyframes b2b-drop { from { opacity: 0; transform: translateY(-24px); } }
.sc-oem .plateB, .sc-oem.is-yours .plateA { opacity: 0; transition: opacity .5s; }
.sc-oem.is-yours .plateB { opacity: 1; }
.sc-oem.is-yours .scanbar { animation: b2b-scan .8s ease-in-out both; }
@keyframes b2b-scan { 0% { transform: translateX(0); opacity: 0; } 20% { opacity: 1; } 100% { transform: translateX(120px); opacity: 0; } }
.sc-odm .part { transition: transform .9s var(--vis-ease), opacity .6s; }
.sc-odm .odm-sheet { transform-box: fill-box; transform-origin: center; }
.sc-odm:not([data-stage="0"]) .odm-sheet { transform: translate(-14px, 0) scale(.96); opacity: .9; }
.sc-odm .pp { transform-box: fill-box; transition: transform .9s var(--vis-ease), opacity .6s; transform: translateY(calc(-1 * var(--base))); }
.sc-odm[data-stage="0"] .pp { opacity: 0; transform: translateY(calc(40px - var(--base))); }
.sc-odm[data-stage="1"] .pp { transform: translateY(calc(-1 * (var(--base) + var(--ex)))); }
.sc-odm[data-stage="2"] .pp-cells, .sc-odm[data-stage="2"] .pp-pcb { opacity: 0; }
.sc-odm .plbl { opacity: 0; transition: opacity .5s; }
.sc-odm[data-stage="1"] .plbl { opacity: 1; }
.sc-odm .odm-sample { opacity: 0; transform: translateY(-10px); transition: opacity .6s, transform .6s var(--vis-ease); }
.sc-odm[data-stage="2"] .odm-sample { opacity: 1; transform: none; }
.odm-flow { opacity: .9; stroke-dasharray: 4 5; animation: odm-flow 1s linear 3 forwards; transition: opacity .6s; }
.odm-shadow { transition: opacity .6s; }
@keyframes odm-flow { from { stroke-dashoffset: 18; } to { stroke-dashoffset: 0; } }
.sc-odm[data-stage="0"] .odm-flow, .sc-odm[data-stage="0"] .odm-shadow { opacity: 0; }

/* 说明栏 */
.bw__info { padding: 40px 40px 34px; display: flex; flex-direction: column; border-left: 1px solid rgba(23, 24, 26, .1); min-width: 0; }
.bw__k { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 0; font: 600 11px/1.3 var(--font-figure); letter-spacing: .18em; color: var(--subtle); text-transform: uppercase; }
.bw__k b { color: var(--amber-deep); font-weight: 600; }
.bw__k span:last-child { text-align: right; }
.bw__info h3 { font: 600 32px/1.1 var(--font-figure); margin: 12px 0; color: var(--ink); overflow-wrap: break-word; hyphens: auto; }
.bw__body { color: var(--muted); margin: 0 0 24px; font-size: 14.5px; }
.bw__rdg { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr); gap: 14px; margin-bottom: 22px; }
.bw__rd { border-radius: 14px; background: #fff; box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1); padding: 14px 16px; min-width: 0; }
.bw__rdl { display: flex; justify-content: space-between; gap: 8px; margin: 0; font: 600 10px/1.3 var(--font-figure); letter-spacing: .16em; text-transform: uppercase; color: var(--subtle); }
.bw__rdv { font: 500 34px/1 var(--font-figure); color: var(--ink); margin: 10px 0 2px; letter-spacing: -.01em; }
.bw__rdv small { font: 500 13px var(--font); color: var(--muted); margin-left: 4px; letter-spacing: 0; }
.bw__rd .vlog { width: 100%; }
.bw__rd .vlog i { height: 10px; }
.bw__rd .vlog__ticks { color: var(--subtle); }
.bw__leadq { display: flex; align-items: center; gap: 10px; margin: 12px 0 0; padding: 7px 12px; border-radius: 7px; border: 1px dashed rgba(23, 24, 26, .22);
  font-size: 12.5px; line-height: 1.4; color: var(--muted); background: repeating-linear-gradient(135deg, rgba(23, 24, 26, .05) 0 6px, transparent 6px 12px); }
.bw__leadq::before { content: ""; flex: none; width: 15px; height: 15px; background: var(--amber-deep);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='1.6'%3E%3Cpath d='M6 3h8l4 4v14H6z'/%3E%3Cpath d='M9 11h6M9 14h6M9 17h4'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='1.6'%3E%3Cpath d='M6 3h8l4 4v14H6z'/%3E%3Cpath d='M9 11h6M9 14h6M9 17h4'/%3E%3C/svg%3E") center / contain no-repeat; }
.bw__tags { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin: 10px 0 0; font: 600 10.5px/1.3 var(--font-figure); color: var(--muted); }
.bw__svc { list-style: none; margin: 0 0 26px; padding: 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 10px; }
.bw__svc-i { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 12px; align-items: center; padding: 10px 12px 10px 10px; border-radius: 12px;
  background: rgba(255, 255, 255, .6); box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1); font-size: 13px; line-height: 1.4; color: var(--ink); }
.bw__svc-i .b2i { width: 38px; height: 38px; padding: 7px; border-radius: 10px; color: var(--ink); overflow: visible;
  background: linear-gradient(180deg, #fff, #f0efea); box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1), 0 4px 10px -6px rgba(0, 0, 0, .25); }
.bw__panel.is-play .bw__svc-i { animation: b2b-in .6s var(--vis-ease) both; }
.bw__panel.is-play .bw__svc-i:nth-child(2) { animation-delay: 70ms; }
.bw__panel.is-play .bw__svc-i:nth-child(3) { animation-delay: 140ms; }
.bw__panel.is-play .bw__svc-i:nth-child(4) { animation-delay: 210ms; }
.bw__panel.is-play .bw__info > * { animation: b2b-in .6s var(--vis-ease) both; }
@keyframes b2b-in { from { opacity: 0; transform: translateY(8px); } }
.bw__cta { margin: auto 0 0; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.bw__cta span { font-size: 12px; color: var(--subtle); max-width: 240px; line-height: 1.45; }
.b2i .ac { stroke: var(--amber); }
.b2i .acf { fill: var(--amber); stroke: none; }

/* 三列对比表 */
.bw__cmp { padding: 34px 36px 38px; }
.bw__studio.is-cmp .bw__cmp { animation: b2b-in .6s var(--vis-ease) both; }
.bw__cmp table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13.5px; table-layout: fixed; }
.bw__cmp th, .bw__cmp td { text-align: left; vertical-align: top; padding: 15px 18px; border-bottom: 1px solid rgba(23, 24, 26, .1); overflow-wrap: break-word; }
.bw__cmp thead td { width: 160px; border-bottom: 2px solid var(--ink); }
.bw__cmp thead th { border-bottom: 2px solid var(--ink); padding-bottom: 18px; vertical-align: bottom; }
.bw__cmp thead th b { display: block; font: 600 22px/1.1 var(--font-figure); color: var(--ink); margin-top: 8px; }
.bw__cmp thead th small { display: block; margin-top: 14px; font: 600 10.5px/1 var(--font-figure); letter-spacing: .16em; color: var(--subtle); }
.bw__cmp tbody th { font: 600 11px/1.4 var(--font-figure); letter-spacing: .14em; color: var(--subtle); text-transform: uppercase; padding-top: 18px; }
.bw__cmp td { color: var(--ink); }
.bw__cmp tbody tr:hover td, .bw__cmp tbody tr:hover th { background-color: rgba(23, 24, 26, .025); }
.bw__cmpic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: #fff; box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1); }
.bw__cmpic .b2i { width: 30px; height: 30px; color: var(--ink); }
.bw__cmpgo { display: inline-flex; gap: 6px; align-items: center; margin-top: 12px; font: 600 12.5px/1.3 var(--font); color: var(--amber-deep); text-decoration: none; }
.bw__cmpgo::after { content: "→"; transition: transform .3s var(--vis-ease); }
.bw__cmpgo:hover::after { transform: translateX(3px); }
.bw__mq { display: block; font: 500 30px/1 var(--font-figure); }
.bw__mq small { font: 500 13px var(--font); color: var(--muted); margin-left: 4px; }
.bw__cmp .vlog { width: 150px; margin-top: 8px; }
.bw__cmpft td { font-size: 13px; color: var(--muted); background: rgba(23, 24, 26, .03); }
/* 当前方式那一列（b2b-page.js 给工作台写 data-cur）：琥珀底色 + 表头顶边 */
.bw__studio[data-cur="0"] .bw__cmp tr:not(.bw__cmpft) > :nth-child(2),
.bw__studio[data-cur="1"] .bw__cmp tr:not(.bw__cmpft) > :nth-child(3),
.bw__studio[data-cur="2"] .bw__cmp tr:not(.bw__cmpft) > :nth-child(4) { background: linear-gradient(180deg, rgba(242, 163, 58, .09), rgba(242, 163, 58, .05)); }
.bw__studio[data-cur="0"] .bw__cmp thead th:nth-child(2),
.bw__studio[data-cur="1"] .bw__cmp thead th:nth-child(3),
.bw__studio[data-cur="2"] .bw__cmp thead th:nth-child(4) { box-shadow: inset 0 3px 0 var(--amber); }
.bw__cmpft th { background: rgba(23, 24, 26, .03); }

/* ================================================================== 窄屏 */
@media (max-width: 1199px) {
  .b2h__top { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .b2t__title { max-width: 60%; }
}
@media (max-width: 1023px) {
  .b2h__tiles { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .b2t { min-height: 220px; }
  .b2t__text { padding-top: 70px; max-width: 56%; }
  .bw__head { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .bw__panel { grid-template-columns: minmax(0, 1fr); min-height: 0; }
  .bw__panel::before { display: none; }
  .bw__scene { grid-area: auto; align-self: stretch; padding: 18px 0 20px; border-bottom: 1px solid rgba(23, 24, 26, .1); display: flex; flex-direction: column; align-items: flex-start; }
  .bw__info { grid-area: auto; border-left: 0; }
  .bw__ctl, .bw__ill { position: static; }
  .bw__ctl { margin: 14px 24px 0; max-width: calc(100% - 48px); }
  .bw__ill { margin: 14px 24px 0; }
  /* 标注是图下的编号列表（忠于高保真稿窄屏）：插图里的引线与编号圆不画 */
  .sc .co.callout { display: none; }
}
@media (max-width: 767px) {
  .b2h { padding-bottom: 50px; }
  .b2h .crumbs { margin-bottom: 26px; }
  .b2h__bg img { width: 100%; right: 0; opacity: .35; }
  .b2h__title { font-size: clamp(48px, 15vw, 64px); }
  .b2h__lead { font-size: 15.5px; }
  .b2h__ctas .btn { flex: 1 1 100%; justify-content: center; }
  .b2h__plate > div { grid-template-columns: 96px minmax(0, 1fr); gap: 12px; }
  .b2t__text { max-width: none; padding-top: 120px; }
  .b2t__ill { width: 62%; }
  .b2t__title { max-width: 40%; font-size: 23px; }
  .bw { padding: 72px 0 80px; }
  .bw__bar { flex-direction: column; }
  .bw__modes { flex-direction: column; gap: 8px; }
  .bw__mode { padding: 12px 14px; gap: 12px; }
  .bw__views { width: 100%; }
  .bw__views button { flex: 1; justify-content: center; padding: 10px 8px; }
  .bw__studio { border-radius: 20px; }
  .vco--scene, .bw__odmh { padding: 0 16px; }
  .bw__ctl { margin: 12px 16px 0; max-width: calc(100% - 32px); }
  .bw__ctl button { padding: 6px 9px; font-size: 11px; }
  .bw__ill { margin: 12px 16px 0; }
  .bw__info { padding: 24px 18px; }
  .bw__info h3 { font-size: 26px; }
  .bw__k span:last-child { display: none; }
  .bw__rdg, .bw__svc { grid-template-columns: minmax(0, 1fr); }
  .bw__cmp { padding: 20px 14px; overflow-x: auto; }
  .bw__cmp table { min-width: 640px; }
  .bw__cmp thead td { width: 120px; }
}

@media (prefers-reduced-motion: reduce) {
  .ti-drop, .ti-swapA, .ti-swapB, .ti-scan, .ti-draw, .ti-pulse, .odm-flow, .bw__panel.is-play .sc-drop, .sc-oem.is-yours .scanbar { animation: none; }
  .ti-draw { stroke-dashoffset: 0; }
  .ti-swapA { opacity: 0; }
  .ti-scan { opacity: 0; }
  .sc-odm .pp, .sc-oem .plateA, .sc-oem .plateB, .sc-odm .odm-sample, .sc-odm .part, .sc-odm .plbl, .odm-flow, .odm-shadow { transition: none; }
  .bw__panel.is-play .bw__svc-i, .bw__panel.is-play .bw__info > *, .bw__studio.is-cmp .bw__cmp { animation: none; }
  .b2t, .b2t::before, .b2t::after, .bw__mode, .bw__n, .b2h .btn, .bw .btn, .b2h .btn--amber::after, .bw .btn--amber::after { transition: none; }
  .b2t:hover { transform: none; }
}

/* ================================================================== 货运之路（Task 11）
   服务端：标题 + 6 张卡（.br__list，无 JS / 窄屏 / 减少动态时就是一列卡片）。b2b-route.js 显示 [data-route-scroll]：
   ≥ 821 宽且非减少动态给 section 加 .is-live —— 640vh 的滚动区里粘住地图，当前卡片移进 .br__slot 叠在地图左下；
   否则地图停在终态（D17），下面列出卡片。 */
.br { background: #0c0d0f; color: var(--on-dark); padding: 110px 0 0; }
.br__head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: 26px; }
.br__head .vh2 { color: var(--on-dark); }
.br__head .vsub { font-size: 15.5px; max-width: 560px; margin: 0; }
.br__scroll { position: relative; }
.br.is-live .br__scroll { height: 640vh; }
.br.is-live .br__sticky { position: sticky; top: var(--hdr-h); height: calc(100vh - var(--hdr-h)); display: flex; flex-direction: column; justify-content: center; overflow: hidden; }
.br:not(.is-live) .br__rail, .br:not(.is-live) .br__slot { display: none; }
.br.is-live .br__list { display: none; }
.br__stage { display: grid; grid-template-rows: auto minmax(0, 1fr); width: 100%; }
.br.is-live .br__stage { height: 100%; padding-top: 18px; padding-bottom: 26px; }

/* 进度轨：6 站按钮 + 琥珀进度条（宽度 = b2b-route.js 写的 --route-fill） */
.br__rail { list-style: none; margin: 0 0 14px; padding: 0; position: relative; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); }
.br__rail::before { content: ""; position: absolute; left: 0; right: 0; top: 15px; height: 1px; background: rgba(255, 255, 255, .14); }
.br__rail::after { content: ""; position: absolute; left: 0; top: 14px; height: 3px; border-radius: 3px; width: var(--route-fill, 0%);
  background: linear-gradient(90deg, var(--amber-deep), var(--amber), #ffc66b); box-shadow: 0 0 14px rgba(242, 163, 58, .6); }
.br__rail li { position: relative; z-index: 1; min-width: 0; }
.br__rail button { appearance: none; display: block; width: 100%; border: 0; background: none; cursor: pointer; text-align: left; padding: 0 10px 0 0; font: inherit; color: var(--on-dark-3); }
.br__rail button:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 6px; }
.br__rail i { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 50%; background: #0c0d0f; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14);
  font: 600 11px/1 var(--font-figure); font-style: normal; letter-spacing: .06em; transition: background-color .4s var(--vis-ease), color .4s, box-shadow .4s var(--vis-ease); }
.br__rail span { display: block; margin-top: 9px; font-size: 13px; line-height: 1.25; transition: color .4s; overflow-wrap: break-word; }
.br__rail small { display: block; margin-top: 3px; font: 600 9.5px/1.25 var(--font-figure); letter-spacing: .14em; text-transform: uppercase; color: var(--amber); }
.br__rail .is-lit i { background: #1d1608; color: #ffc66b; box-shadow: inset 0 0 0 1px rgba(242, 163, 58, .5); }
.br__rail .is-lit span { color: var(--on-dark-2); }
.br__rail .is-act i { background: var(--amber); color: var(--amber-ink); box-shadow: 0 0 0 5px rgba(242, 163, 58, .16), 0 0 22px rgba(242, 163, 58, .7); }
.br__rail .is-act span { color: #fff; }

/* 地图：点阵画布 + SVG 叠层，按 1200 × 571 等比放进地图框（粘住时按框高收窄） */
.br__map, .br__slot { grid-area: 2 / 1; }
.br__map { position: relative; border-radius: 24px; overflow: hidden; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(1100px 600px at 85% 60%, rgba(242, 163, 58, .07), transparent 60%), radial-gradient(900px 600px at 15% 20%, rgba(120, 150, 190, .1), transparent 60%), linear-gradient(180deg, #121317, #0d0e11);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .08), 0 50px 90px -50px #000; }
.br.is-live .br__map { min-height: 0; container-type: size; }
.br__fit { position: relative; width: 100%; aspect-ratio: 1200 / 571; }
.br.is-live .br__fit { width: min(100cqw, 100cqh * 1200 / 571); }
.br__fit canvas, .br__fit svg { position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; }
.br__hud { position: absolute; right: 22px; top: 18px; z-index: 3; margin: 0; text-align: right; font: 600 10px/1.6 var(--font-figure); letter-spacing: .18em; text-transform: uppercase; color: var(--on-dark-3); }
.br__legend { position: absolute; right: 22px; bottom: 18px; z-index: 3; margin: 0; display: flex; gap: 18px; font: 600 10.5px/1.3 var(--font-figure); letter-spacing: .1em; color: var(--on-dark-3); }
.br__legend span { display: flex; align-items: center; gap: 8px; }
.br__legend i { display: block; width: 26px; height: 0; border-top: 1.5px dashed #9fb3cc; }
.br__legend i.c { border-top: 3px solid var(--amber); border-radius: 2px; box-shadow: 0 0 8px rgba(242, 163, 58, .8); }
.br__map svg text { font-family: var(--font); }
.br__map svg .fig { font-family: var(--font-figure); }
.br__gl { font-size: 8.5px; letter-spacing: 1px; fill: rgba(255, 255, 255, .22); }
.br__rg { font-size: 13px; letter-spacing: 8px; text-transform: uppercase; }
.br__city { font-size: 13px; font-weight: 600; fill: #f1f0ec; }
.br__sub { font-size: 9.5px; letter-spacing: 1px; fill: rgba(242, 190, 120, .75); }
.br__tt { font-size: 11px; font-weight: 600; fill: #f6c278; }
.br.is-live .st { cursor: pointer; }
.st .halo { opacity: 0; transition: opacity .5s; }
.st .ring { transition: stroke .4s; }
.st .core { fill: rgba(255, 255, 255, .35); transition: fill .4s; }
.st .num { font-size: 10px; font-weight: 600; letter-spacing: 1.5px; fill: rgba(242, 163, 58, .85); }
.st .lbl { font-size: 12.5px; font-weight: 600; fill: rgba(241, 240, 236, .6); transition: fill .4s; }
.st.lit .core { fill: var(--amber); }
.st.lit .ring { stroke: rgba(242, 163, 58, .6); }
.st.act .halo { opacity: 1; }
.st.act .ring { stroke: #ffc66b; }
.st.act .lbl { fill: #fff; }
/* 脉冲（vis.css .vpulse，3 轮后停在末帧）：工厂光环在地图第一次进入视口时（.is-seen）才开始，站点光晕在成为当前站时 */
.br__map .vpulse { animation: none; }
.br.is-seen .br__map .vpulse, .br__map .st.act .vpulse { animation: vpulse 2.4s ease-in-out 3 both; }
.br.is-seen .br__map .st:not(.act) .vpulse { animation: none; }
.termtag { transition: opacity .5s; }

/* 卡片：列表里一列（或多列）排开；粘住时当前卡片叠在地图左下 */
.br__list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 360px), 1fr)); align-items: start; }
.br__slot { position: relative; z-index: 4; pointer-events: none; list-style: none; margin: 0; padding: 0; }  /* ul：移进来的卡片是 li */
.br__slot .br__card { position: absolute; left: 24px; bottom: 24px; width: min(470px, 46%); max-height: calc(100% - 48px); overflow: auto; pointer-events: auto;
  animation: br-in .6s var(--vis-ease) both; }
@keyframes br-in { from { opacity: 0; transform: translateY(8px); } }
/* 卡片位置（b2b-route.js 按「不盖住终点、当前站点与条款标签」选，默认左下；bm = 底边、左缘让过门口）；右上让开「示意」说明 */
.br__slot[data-corner="bm"] .br__card { left: var(--card-left, 24px); }
.br__slot[data-corner="br"] .br__card, .br__slot[data-corner="tr"] .br__card { left: auto; right: 24px; }
.br__slot[data-corner="tl"] .br__card, .br__slot[data-corner="tr"] .br__card { bottom: auto; top: 24px; }
.br__slot[data-corner="tr"] .br__card { top: 48px; max-height: calc(100% - 72px); }
/* 矮视口（常见笔记本 1280 × 720、1366 × 768）：卡片收窄收紧，地图多留高度 */
@media (min-width: 821px) and (max-height: 820px) {
  .br.is-live .br__stage { padding-top: 12px; padding-bottom: 16px; }
  .br__rail { margin-bottom: 10px; }
  .br__slot .br__card { width: min(430px, 42%); padding: 15px 18px; }
  .br__slot .br__card h3 { font-size: 20px; margin: 6px 0 4px; }
  .br__slot .br__b { font-size: 13px; line-height: 1.5; margin-bottom: 10px; }
  .br__slot .br__w { padding-top: 10px; }
  .br__slot .br__wl { margin-bottom: 8px; }
  .br__slot .br__note { margin-top: 6px; }
}
.br__card { border-radius: 18px; padding: 20px 22px; min-width: 0;
  background: linear-gradient(180deg, rgba(32, 33, 38, .86), rgba(20, 21, 24, .9)); -webkit-backdrop-filter: blur(14px) saturate(1.2); backdrop-filter: blur(14px) saturate(1.2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .07), inset 0 0 0 1px rgba(255, 255, 255, .07), 0 30px 60px -30px #000; }
.br__ck { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 12px; margin: 0; font: 600 10.5px/1.3 var(--font-figure); letter-spacing: .18em; text-transform: uppercase; color: var(--on-dark-3); }
.br__ck b { color: var(--amber); font-weight: 600; }
.br__card h3 { font: 600 23px/1.15 var(--font-figure); margin: 8px 0 6px; color: #fff; overflow-wrap: break-word; }
.br__b { margin: 0 0 14px; font-size: 13.5px; line-height: 1.55; color: var(--on-dark-2); }
.br__w { border-top: 1px solid rgba(255, 255, 255, .14); padding-top: 14px; }
.br__wl { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; font: 600 10px/1.3 var(--font-figure); letter-spacing: .18em; text-transform: uppercase; color: var(--amber); }
.br__wl::before { content: ""; flex: none; width: 14px; height: 2px; border-radius: 2px; background: var(--amber); }
.br__note { margin: 10px 0 0; font-size: 11.5px; line-height: 1.5; color: var(--on-dark-3); }

/* ① 询盘里请写上：带小图标的词条（公司 / 国家 / 产品 / 数量 / 日期） */
.br__tok { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.br__tok li { display: inline-flex; align-items: center; gap: 7px; padding: 7px 11px; border-radius: 9px; font-size: 12.5px; line-height: 1.3; color: var(--on-dark);
  background: rgba(255, 255, 255, .05); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14); }
.br__tok li::before { content: ""; flex: none; width: 14px; height: 14px; background: var(--amber); -webkit-mask: var(--ic) center / contain no-repeat; mask: var(--ic) center / contain no-repeat; }
.br__tok li:nth-child(1) { --ic: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.4'%3E%3Cpath d='M2.5 14V4.5h6V14M8.5 7h5v7M1.5 14h13M4.5 7h2M4.5 9.5h2M10.5 9.5h1M10.5 11.5h1'/%3E%3C/svg%3E"); }
.br__tok li:nth-child(2) { --ic: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.4'%3E%3Ccircle cx='8' cy='8' r='6'/%3E%3Cpath d='M2 8h12M8 2c1.8 1.8 2.6 3.8 2.6 6S9.8 12.2 8 14C6.2 12.2 5.4 10.2 5.4 8S6.2 3.8 8 2z'/%3E%3C/svg%3E"); }
.br__tok li:nth-child(3) { --ic: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.4'%3E%3Crect x='2' y='4.5' width='12' height='9' rx='1.4'/%3E%3Cpath d='M5.5 4.5V3h5v1.5M5 8.5h3'/%3E%3C/svg%3E"); }
.br__tok li:nth-child(4) { --ic: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.4'%3E%3Cpath d='M2 4h12M2 8h12M2 12h7'/%3E%3C/svg%3E"); }
.br__tok li:nth-child(5) { --ic: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.4'%3E%3Crect x='2' y='3' width='12' height='11' rx='1.4'/%3E%3Cpath d='M2 6.5h12M5 1.5v3M11 1.5v3'/%3E%3Ccircle cx='10.5' cy='10.5' r='1' fill='%23000'/%3E%3C/svg%3E"); }

/* ② 按您的市场确认：三张折角文件 */
.br__docs { list-style: none; margin: 0; padding: 0; display: flex; gap: 10px; }
.br__doc { flex: 1; min-width: 0; position: relative; padding: 12px 12px 10px; border-radius: 10px; background: linear-gradient(180deg, #f3f2ee, #e3e1db); color: var(--ink);
  box-shadow: 0 10px 20px -12px #000; font-size: 12px; font-weight: 600; line-height: 1.3; overflow-wrap: break-word; hyphens: auto; }
.br__doc::after { content: ""; position: absolute; right: 0; top: 0; width: 14px; height: 14px; border-radius: 0 10px 0 0; background: linear-gradient(225deg, #17181b 50%, #cfccc4 50%); }
.br__doc span { display: block; padding-right: 10px; }
.br__doc i { display: block; height: 3px; border-radius: 2px; background: rgba(23, 24, 26, .14); margin-top: 6px; }
.br__doc i:last-child { width: 70%; }

/* ③ 书面报价单 + 三种方式的起订量读数格 */
.br__qs { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 14px; align-items: start; }
.br__sheet { border-radius: 10px; padding: 11px 12px; background: linear-gradient(180deg, #f3f2ee, #e3e1db); color: var(--ink); font-size: 11.5px; box-shadow: 0 10px 20px -12px #000; }
.br__sheet b { display: block; margin-bottom: 6px; font: 600 10px/1.3 var(--font-figure); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.br__sheet ul { list-style: none; margin: 0; padding: 0; }
.br__sheet li { display: flex; align-items: center; gap: 6px; padding: 3px 0; border-top: 1px solid rgba(23, 24, 26, .08); font-weight: 600; line-height: 1.3; }
.br__sheet li::before { content: ""; flex: none; width: 11px; height: 11px; background: var(--amber-deep);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='m2.5 6.3 2.3 2.2 4.7-5' fill='none' stroke='%23000' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='m2.5 6.3 2.3 2.2 4.7-5' fill='none' stroke='%23000' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat; }
.br__moqt { display: grid; gap: 9px; min-width: 0; }
.br__moqt > div { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 10px; align-items: baseline; font-size: 12px; color: var(--on-dark-2); }
.br__moqt b { font: 600 12px/1.25 var(--font-figure); letter-spacing: .04em; color: var(--on-dark); overflow-wrap: break-word; }
.br__moqt em { font: 500 17px/1 var(--font-figure); font-style: normal; color: #fff; text-align: right; white-space: nowrap; }
.br__moqt em small { font: 500 10.5px var(--font); color: var(--on-dark-3); }
.br__moqt .vlog { grid-column: 1 / -1; width: 100%; margin-top: 5px; color: var(--on-dark); }
.br__moqt .br__note { margin-top: 2px; }

/* ⑤ 付款：定金 / 尾款分段条（宽度 = 内容稿 depositPct）+ 第 9 类菱形 */
.br__pay { display: grid; grid-template-columns: var(--dep, 30%) minmax(0, 1fr); border-radius: 10px; overflow: hidden; font: 600 11.5px/1.3 var(--font-figure); letter-spacing: .03em; }
.br__pay > div { position: relative; padding: 10px 11px; min-width: 0; overflow-wrap: break-word; }
.br__pay b { display: block; margin-bottom: 4px; font: 500 22px/1 var(--font-figure); letter-spacing: 0; }
.br__pay-d { background: linear-gradient(180deg, #3a3b40, #2a2b30); color: #e9e8e3; }
.br__pay-d::after { content: "✓"; position: absolute; right: 9px; top: 9px; font-size: 11px; color: #ffc66b; }
.br__pay-r { background: linear-gradient(180deg, #ffc66b, var(--amber)); color: var(--amber-ink); box-shadow: inset 0 0 30px rgba(255, 255, 255, .2); overflow: hidden; }
.br__pay-r::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .35), transparent);
  transform: translateX(-100%); animation: br-sheen 2.8s ease-in-out 3 both; }
@keyframes br-sheen { 0% { transform: translateX(-100%); } 60%, 100% { transform: translateX(100%); } }
.br__c9 { display: flex; gap: 12px; align-items: center; margin-top: 12px; font-size: 12px; line-height: 1.45; color: var(--on-dark-2); }
.br__c9i { flex: none; width: 46px; height: 46px; filter: drop-shadow(0 6px 10px rgba(0, 0, 0, .5)); }
.br__c9 p { margin: 0; }
.br__c9 b { display: block; color: #fff; font-weight: 600; }

/* ⑥ 交付：DDP / DAP 开关（JS）+ 谁负责（无 JS 时三格全显示） */
.br__dd { display: flex; gap: 4px; width: max-content; max-width: 100%; margin-bottom: 12px; padding: 3px; border-radius: var(--r-pill); background: rgba(255, 255, 255, .05); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14); }
.br__dd[hidden] { display: none; }
.br__dd button { appearance: none; border: 0; background: none; cursor: pointer; padding: 6px 16px; border-radius: var(--r-pill); font: 600 12px/1.2 var(--font-figure); letter-spacing: .1em; color: var(--on-dark-3); transition: background-color .3s, color .3s; }
.br__dd button:hover { color: var(--on-dark); }
.br__dd button:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
.br__dd button[aria-pressed="true"] { background: var(--amber); color: var(--amber-ink); box-shadow: 0 0 16px -4px rgba(242, 163, 58, .8); }
.br__resp { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 3px; border-radius: 9px; overflow: hidden; }
.br__resp.is-dap .br__r--ddp, .br__resp.is-ddp .br__r--dap { display: none; }
.br__resp:not(.is-dap):not(.is-ddp) .br__r:first-child { grid-row: span 2; }
.br__r { margin: 0; padding: 9px 9px 8px; min-height: 72px; font-size: 11.5px; line-height: 1.35; overflow-wrap: break-word; }
.br__r b { display: block; margin-bottom: 5px; font: 600 9.5px/1.3 var(--font-figure); letter-spacing: .14em; text-transform: uppercase; opacity: .75; }
.br__r--us { background: linear-gradient(180deg, #ffc66b, var(--amber)); color: var(--amber-ink); }
.br__r--you { background: repeating-linear-gradient(135deg, rgba(255, 255, 255, .06) 0 5px, rgba(255, 255, 255, .02) 5px 10px); color: var(--on-dark); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14); }
.br__r--you b { opacity: .85; }
.br__who { display: table; margin-top: 6px; padding: 2px 7px; border-radius: 99px; font: 600 10px/1.4 var(--font-figure); letter-spacing: .08em; background: rgba(0, 0, 0, .18); }
.br__r--you .br__who { background: rgba(255, 255, 255, .1); }
.br__resp.is-dap .br__r--dap, .br__resp.is-ddp .br__r--ddp { animation: br-in .45s var(--vis-ease) both; }

/* 小甘特进卡片槽时两根条依次长出（高保真稿 wireCard） */
.br__slot .vlead__bar { animation: br-grow 1s var(--vis-ease) .15s both; }
.br__slot .vlead__row + .vlead__row .vlead__bar { animation-delay: .33s; }
@keyframes br-grow { from { width: 0; } }
.br__foot { margin: 0; padding: 26px 0 110px; font-size: 12px; color: var(--on-dark-3); }

@media (max-width: 1023px) {
  .br__head { grid-template-columns: minmax(0, 1fr); gap: 16px; }
}
@media (max-width: 820px) {
  /* 地图缩得很小：图例与「示意」说明移到点阵图下面一行，不压任何标签 */
  .br__map { border-radius: 18px; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 6px 12px; padding-bottom: 12px; }
  .br__fit { flex: 0 0 100%; }
  .br__legend, .br__hud { position: static; padding: 0 14px; }
  .br__legend { order: 1; gap: 12px; font-size: 9.5px; }
  .br__hud { order: 2; font-size: 9px; text-align: right; margin-left: auto; }
}
@media (max-width: 767px) {
  .br { padding-top: 72px; }
  .br__card { padding: 18px 16px; }
  .br__qs { grid-template-columns: minmax(0, 1fr); }
  .br__docs { flex-wrap: wrap; }
  .br__doc { flex: 1 1 116px; }
  .br__foot { padding-bottom: 72px; }
}
@media (prefers-reduced-motion: reduce) {
  .br__map .vpulse, .br.is-seen .br__map .vpulse, .br__map .st.act .vpulse, .br__pay-r::after { animation: none; }
  .br__pay-r::after { opacity: 0; }
  .br__slot .br__card, .br__slot .vlead__bar, .br__resp.is-dap .br__r--dap, .br__resp.is-ddp .br__r--ddp { animation: none; }
  .br__rail i, .br__rail span, .st .halo, .st .ring, .st .core, .st .lbl, .termtag, .br__dd button { transition: none; }
}

/* ================================================================== 我们的工厂 + 品牌（Task 12）
   高保真稿第 353–429 行：.fac .fac__grid .flip* .face* .bchip .live .mini .flipbtn .facts .rng* .caps* .certs .thumbs
   → .bfac .bfac__grid .bf（.flip.on → .bf.is-flipped）.bf__in .bf__face .bf__chip .bf__live .bf__mini .bf__flip .bf__facts .bf__rng
   .bf__rngbar .bf__caps .bf__certs .bf__thumbs .bf__go；.brands* .bgrid .bcard* → .bb .bb__hd .bb__grid .bb__card .bb__own .bb__pic .bb__cnt。
   .live i 的无限脉冲红点不移植。服务端两面上下排列（无 JS / < 768 宽）；b2b-page.js 在 ≥ 768 宽加 .is-flippable 才做三维翻转。
   视频是 3:4 竖幅、画面上下是模糊的片头字幕带：height 232% 居中只露出中间的实拍带（高保真稿 .face--f video.main）。 */
.bfac { background: var(--paper); color: var(--ink); padding: 110px 0; }
.bfac__head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: 40px; }
.bfac__head .vsub { font-size: 15.5px; max-width: 560px; margin: 0; }
.bfac__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }

.bf { position: relative; min-width: 0; }
.bf__face { border-radius: 24px; overflow: hidden; }
.bf__face--f { position: relative; display: flex; flex-direction: column; justify-content: flex-end; min-height: 480px; background: #111; color: #fff;
  box-shadow: 0 50px 80px -50px rgba(0, 0, 0, .6); }
.bf__media { position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; object-fit: cover; }
img.bf__media { transform: scale(1.03); }
video.bf__media { inset: auto; left: 50%; top: 50%; width: auto; min-width: 100%; height: 232%; transform: translate(-50%, -50%); }
.bf__face--f::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, rgba(0, 0, 0, .45) 0%, transparent 28%, transparent 42%, rgba(8, 8, 10, .92) 100%); }
.bf__top { position: absolute; left: 24px; right: 24px; top: 22px; z-index: 2; display: flex; justify-content: space-between; align-items: center; gap: 14px; margin: 0; }
.bf__chip { display: inline-flex; align-items: center; gap: 8px; flex: none; font: 600 12px/1 var(--font-figure); letter-spacing: .2em; padding: 7px 12px 7px 10px; border-radius: var(--r-pill);
  background: rgba(0, 0, 0, .4); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .2); }
.bf__chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 10px var(--amber); }
.bf__live { min-width: 0; font: 600 11px/1.3 var(--font-figure); letter-spacing: .06em; color: rgba(255, 255, 255, .78); text-align: right; text-shadow: 0 1px 8px rgba(0, 0, 0, .5); }
.bf__btm { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; column-gap: 18px; padding: 90px 26px 24px; }
.bf__btm > :not(.bf__mini, .bf__flip) { grid-column: 1 / -1; }
.bf__loc { margin: 0; font: 600 11px/1.3 var(--font-figure); letter-spacing: .2em; color: var(--amber-hi); text-transform: uppercase; }
.bf__btm h3 { font: 600 30px/1.1 var(--font-figure); margin: 8px 0; color: #fff; }
.bf__sum { margin: 0; max-width: 470px; font-size: 13.5px; line-height: 1.5; color: #cfd0d3; }
.bf__mini { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 18px 0 0; }
.bf__mini dt { font: 600 10px/1.2 var(--font-figure); letter-spacing: .16em; color: rgba(255, 255, 255, .62); text-transform: uppercase; }
.bf__mini dd { margin: 6px 0 0; font: 500 13px/1 var(--font); color: #bbbcbf; white-space: nowrap; }  /* 数字大、前缀 / 单位小（高保真稿 .mini b small），整项不折行 */
.bf__mini dd b { font: 500 26px/1 var(--font-figure); color: #fff; }
.bf__mini dd small { font-size: inherit; white-space: pre; }
.bf__flip { appearance: none; display: inline-flex; align-items: center; gap: 8px; flex: none; border: 0; cursor: pointer; min-height: 40px; padding: 10px 14px; border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .12); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); color: #fff; font: 600 12.5px/1.2 var(--font);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .22); transition: background-color .3s, color .3s; --focus: var(--amber); }
.bf__flip[hidden] { display: none; }
.bf__flip::before { content: ""; flex: none; width: 15px; height: 15px; background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.6' stroke-linecap='round'%3E%3Cpath d='M2.5 8a5.5 5.5 0 0 1 9.6-3.6M13.5 8a5.5 5.5 0 0 1-9.6 3.6'/%3E%3Cpath d='M12.5 1.8v2.8H9.7M3.5 14.2v-2.8h2.8'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.6' stroke-linecap='round'%3E%3Cpath d='M2.5 8a5.5 5.5 0 0 1 9.6-3.6M13.5 8a5.5 5.5 0 0 1-9.6 3.6'/%3E%3Cpath d='M12.5 1.8v2.8H9.7M3.5 14.2v-2.8h2.8'/%3E%3C/svg%3E") center / contain no-repeat; }
.bf__flip:hover { background: var(--amber); color: var(--amber-ink); }
.bf__flip:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

.bf__face--b { margin-top: 12px; display: flex; flex-direction: column; padding: 26px 28px 24px; color: var(--on-dark); --focus: var(--amber);
  background: radial-gradient(600px 300px at 100% 0%, rgba(242, 163, 58, .14), transparent 60%), linear-gradient(180deg, #202125, #141518);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .07), 0 50px 80px -50px rgba(0, 0, 0, .6); }
.bf__face--b > .bf__loc { font-size: 10.5px; color: var(--amber); }
.bf__face--b > .bf__loc b { font-weight: 600; color: #ffc66b; }
.bf__facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 18px 0 16px; border-top: 2px solid var(--on-dark); }
.bf__facts > div { min-width: 0; padding: 14px 12px 12px 0; border-bottom: 1px solid rgba(255, 255, 255, .14); }
.bf__facts > div:not(:nth-child(3n+1)) { padding-left: 14px; border-left: 1px solid rgba(255, 255, 255, .08); }
.bf__facts dt { font: 600 10px/1.25 var(--font-figure); letter-spacing: .16em; color: var(--on-dark-3); text-transform: uppercase; }
/* 数字大、单位与说明小（高保真稿 dd small）：count_html 的 .cnt 是数字；没有可计数数字的事实（年份、品牌名）整行用大字 */
.bf__facts dd { margin: 8px 0 0; font: 500 13px/1.3 var(--font); color: var(--on-dark-3); overflow-wrap: break-word; }
.bf__facts dd .cnt, .bf__facts dd.is-word, .bf__facts dd i { font: 500 30px/1 var(--font-figure); color: #fff; letter-spacing: -.005em; font-variant-numeric: tabular-nums; }
.bf__facts dd i { font-style: normal; }  /* 范围「a–b」的连接号跟数字一样大（模板包成 <i>） */
.bf__rng { margin-top: 10px; }
.bf__rngbar { position: relative; height: 5px; border-radius: 6px; background: rgba(255, 255, 255, .08); }
.bf__rngbar i { position: absolute; top: 0; bottom: 0; border-radius: 6px; background: linear-gradient(90deg, var(--amber), #ffc66b); box-shadow: 0 0 10px rgba(242, 163, 58, .6); }
.bf__rngbar i { transition: width 1s var(--vis-ease); }
.bf.is-flippable:not(.is-flipped) .bf__rngbar i { width: 0 !important; }  /* 翻到背面时从 0 长到范围（高保真稿 countUp） */
.bf.is-flipped .bf__rngbar i { transition-delay: .35s; }
.bf__rng span { display: flex; justify-content: space-between; margin-top: 4px; font: 600 9px/1 var(--font-figure); color: #7d8087; }
.bf__caps-h { margin: 0 0 6px; font: 600 10px/1.2 var(--font-figure); letter-spacing: .18em; color: var(--on-dark-3); text-transform: uppercase; }
.bf__caps { list-style: none; margin: 0 0 16px; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 18px; counter-reset: bfc; }
.bf__cap { position: relative; padding: 7px 0 7px 30px; font-size: 12.5px; line-height: 1.4; color: var(--on-dark-2); border-top: 1px solid rgba(255, 255, 255, .08); }
.bf__cap::before { counter-increment: bfc; content: counter(bfc, decimal-leading-zero); position: absolute; left: 0; top: 8px; font: 600 10.5px/1.2 var(--font-figure); letter-spacing: .08em; color: var(--amber); }
.bf__certs { list-style: none; margin: 0 0 14px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.bf__certs li { font: 600 11px/1.3 var(--font-figure); letter-spacing: .04em; padding: 6px 10px; border-radius: 8px; background: rgba(255, 255, 255, .05); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14); color: var(--on-dark-2); }
.bf__thumbs { display: flex; gap: 10px; margin-top: auto; align-items: flex-end; }
.bf__thumbs figure { margin: 0; position: relative; width: 132px; height: 86px; border-radius: 10px; overflow: hidden; flex: none; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14); }
.bf__thumbs img { width: 100%; height: 100%; object-fit: cover; }
.bf__thumbs figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 16px 7px 0; border-bottom: 5px solid transparent; font-size: 10px; line-height: 1.25; color: #fff; background: linear-gradient(transparent, rgba(0, 0, 0, .88));
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; }
.bf__go { margin: 0 0 0 auto; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; text-align: right; }
.bf__go .link-arrow { font-size: 13px; font-weight: 600; color: var(--amber-hi); }
.bf__go .bf__flip { min-height: 32px; padding: 4px 0; background: none; box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none; color: var(--on-dark-3); font-size: 12px; }
.bf__go .bf__flip::before { width: 13px; height: 13px; }
.bf__go .bf__flip:hover { background: none; color: var(--on-dark); }

/* 两面叠在同一个网格格子里（而不是 position: absolute + inset: 0）：卡高 = 两面里较高的那面，背面不出滚动条（长译文、5 条认证）；
   同一行两张卡由 .bfac__grid 拉成等高 */
@media (min-width: 768px) {
  .bf.is-flippable { perspective: 1600px; display: grid; }
  .bf.is-flippable .bf__in { position: relative; display: grid; transform-style: preserve-3d; transition: transform .8s var(--vis-ease); min-height: 560px; }
  .bf.is-flippable.is-flipped .bf__in { transform: rotateY(180deg); }
  .bf.is-flippable .bf__face { grid-area: 1 / 1; margin: 0; -webkit-backface-visibility: hidden; backface-visibility: hidden; }
  .bf.is-flippable .bf__face--b { transform: rotateY(180deg); overflow: auto; }
  .bf.is-flippable .bf__face--f { min-height: 0; }
}

/* 品牌卡（D12：代表产品与款数来自目录） */
.bb { margin-top: 64px; }
.bb__hd { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 20px; }
.bb__hd h3 { font: 600 24px/1.15 var(--font-figure); margin: 0; }
.bb__hd p { margin: 0; font-size: 13.5px; color: var(--muted); max-width: 430px; }
.bb__grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)); gap: 10px; }
.bb__grid li { min-width: 0; }
.bb__card { position: relative; display: flex; flex-direction: column; height: 100%; padding: 10px 10px 12px; border-radius: 16px; background: #fff; color: var(--ink); text-decoration: none; overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1), 0 1px 0 rgba(0, 0, 0, .02); transition: transform .45s var(--vis-ease), box-shadow .45s var(--vis-ease); --focus: var(--amber-deep); }
.bb__card::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 0; height: 2px; background: var(--amber); transform: scaleX(0); transition: transform .45s var(--vis-ease); }
.bb__card:hover { transform: translateY(-5px); box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .18), 0 24px 34px -22px rgba(0, 0, 0, .35); }
.bb__card:hover::after, .bb__card:focus-visible::after { transform: scaleX(1); }
.bb__pic { aspect-ratio: 1; border-radius: 10px; background: radial-gradient(70% 60% at 50% 45%, #fff, #f1f0ec); display: grid; place-items: center; overflow: hidden; }
.bb__pic img { width: 88%; height: 88%; object-fit: contain; mix-blend-mode: multiply; transition: transform .6s var(--vis-ease); }  /* 抠图与白底主图一样：白底经 multiply 融进同一块径向底色 */
.bb__card:hover .bb__pic img { transform: scale(1.07); }
.bb__card > b { margin-top: 11px; font: 700 13px/1.1 var(--font-figure); letter-spacing: .12em; text-transform: uppercase; overflow-wrap: anywhere; }
.bb__card > small { margin-top: 4px; font-size: 11px; line-height: 1.3; color: var(--subtle); display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; }
.bb__cnt { display: flex; justify-content: space-between; align-items: center; gap: 6px; margin-top: auto; padding-top: 8px; font: 600 10px/1.2 var(--font-figure); letter-spacing: .08em; color: var(--muted); }
.bb__cnt::after { content: ""; flex: none; width: 12px; height: 12px; background: currentColor; opacity: .5; transition: opacity .3s, transform .3s;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 8h10M9 4l4 4-4 4'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 8h10M9 4l4 4-4 4'/%3E%3C/svg%3E") center / contain no-repeat; }
.bb__card:hover .bb__cnt { color: var(--amber-deep); }
.bb__card:hover .bb__cnt::after { opacity: 1; transform: translateX(2px); }
.bb__own { position: absolute; top: 16px; left: 16px; z-index: 1; font: 600 9px/1.2 var(--font-figure); letter-spacing: .14em; text-transform: uppercase; padding: 3px 6px; border-radius: 5px; background: var(--ink); color: #ffc66b; }

/* ================================================================== FAQ + 询价（Task 12）
   高保真稿第 432–490 行：.lead2* .chips .chip .faq .qa* .form* .sel* .seg .sum → .bl .bl__grid .bl__faq .bl__form（标签与问答在 vis.css .vfaq，
   区段带 .vdark）、.b2v*（每问的小可视化）、.bl__sel（.flash → .is-flash）.bl__l .bl__seg .bl__sum；表单字段沿用站内 .qf / .field。 */
.bl { background: #101113; color: var(--on-dark); padding: 110px 0 120px; }
.bl__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr); gap: 56px; align-items: start; }
.bl__faq .vh2 { color: var(--on-dark); }
.bl .vqa__a .b2v { margin: 0 40px 22px 54px; }

.b2v--brands { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.b2v-brand { font: 600 10.5px/1.2 var(--font-figure); letter-spacing: .12em; text-transform: uppercase; padding: 5px 8px; border-radius: 6px; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14); color: #cfd0d3; }
.b2v--moq { display: grid; gap: 7px; max-width: 420px; }
.b2v--moq > div { display: grid; grid-template-columns: minmax(0, 8.5em) minmax(72px, 1fr) max-content; gap: 10px; align-items: center; font-size: 12px; color: var(--on-dark-2); }
.b2v--moq b { font: 600 12px/1.25 var(--font-figure); letter-spacing: .04em; color: var(--on-dark); }
.b2v--moq .vlog { width: 100%; margin: 0; color: var(--on-dark); }
.b2v--moq em { font: 500 17px/1 var(--font-figure); font-style: normal; color: #fff; text-align: right; }
.b2v--moq em small { font: 500 10.5px var(--font); color: var(--on-dark-3); }
.b2v--lead { max-width: 440px; }
.b2v--lead .vlead { margin-top: 0; }
.b2v--label { display: flex; flex-wrap: wrap; gap: 8px; }
.b2v--label span { font: 600 11px/1.2 var(--font-figure); letter-spacing: .14em; padding: 6px 10px; border-radius: 7px; background: var(--amber); color: var(--amber-ink); }
.b2v--inc { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3px; max-width: 420px; border-radius: 9px; overflow: hidden; }
.b2v--inc p { margin: 0; padding: 9px 9px 8px; min-height: 72px; font-size: 11.5px; line-height: 1.35; }
.b2v--inc b { display: block; margin-bottom: 5px; font: 600 9.5px/1 var(--font-figure); letter-spacing: .14em; opacity: .75; }
.b2v-us { background: linear-gradient(180deg, #ffc66b, var(--amber)); color: var(--amber-ink); }
.b2v-you { background: repeating-linear-gradient(135deg, rgba(255, 255, 255, .06) 0 5px, rgba(255, 255, 255, .02) 5px 10px); color: var(--on-dark); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14); }

/* 表单卡：浅色纸面 + 顶部琥珀细线（高保真稿 .form） */
.bl .qf { position: relative; padding: 32px 32px 28px; border-radius: 24px; color: var(--ink); background: linear-gradient(180deg, #fbfaf7, #efeee9); --focus: var(--amber-deep);
  box-shadow: 0 1px 0 #fff inset, 0 60px 100px -50px #000; scroll-margin-top: calc(var(--hdr-h) + 16px); }
.bl .qf::before { content: ""; position: absolute; left: 32px; right: 32px; top: 0; height: 3px; border-radius: 0 0 3px 3px; background: linear-gradient(90deg, var(--amber), #ffc66b); }
.bl .qf__title { font: 600 30px/1.1 var(--font-figure); margin: 0 0 8px; }
.bl .qf__intro { margin: 0; font-size: 13.5px; line-height: 1.55; color: var(--muted); }
.bl .qf__req { margin: 10px 0 18px; font-size: 11.5px; color: var(--subtle); }
.bl__sel { margin-bottom: 4px; padding: 14px 16px; border-radius: 16px; background: #fff; box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1); }
.bl__sel[hidden] { display: none; }
.bl__l { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 14px; margin: 0 0 10px; font: 600 10px/1.3 var(--font-figure); letter-spacing: .16em; text-transform: uppercase; color: var(--subtle); }
.bl__seg + .bl__l { margin-top: 14px; }
.bl__seg { display: flex; flex-wrap: wrap; gap: 6px; }
.bl__seg button { appearance: none; border: 0; cursor: pointer; display: inline-flex; align-items: center; gap: 7px; min-height: 36px; padding: 8px 13px; border-radius: 10px; font: 600 13px/1.15 var(--font);
  background: var(--paper); color: var(--muted); box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .1); transition: background-color .3s, color .3s, box-shadow .3s; }
.bl__seg button::before { content: ""; flex: none; width: 8px; height: 8px; border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--subtle); transition: background-color .3s, box-shadow .3s; }
.bl__seg button:hover { color: var(--ink); }
.bl__seg button[aria-pressed="true"] { background: var(--ink); color: #fff; box-shadow: none; }
.bl__seg button[aria-pressed="true"]::before { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.bl__sum { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; padding-top: 12px; border-top: 1px dashed rgba(23, 24, 26, .18); }
.bl__sum span { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 2px 6px; padding: 5px 9px; border-radius: 7px; font-size: 12px; line-height: 1.35; background: rgba(242, 163, 58, .12); color: #5a3a06; }
.bl__sum b { font: 600 10px/1.35 var(--font-figure); letter-spacing: .1em; color: var(--amber-deep); text-transform: uppercase; }
.bl__sum em { font-style: normal; }
.bl__sel:not(.is-set) .bl__sum span { padding: 0; background: none; color: var(--subtle); }
.bl__sel.is-flash { animation: bl-flash 1.6s var(--vis-ease); }
@keyframes bl-flash { 20% { box-shadow: 0 0 0 3px var(--amber); } }
.bl .field-grid--2 { gap: 12px 14px; margin-top: 18px; }
.bl .field__label { font: 600 12px/1.25 var(--font); color: var(--muted); }
.bl .field__label i { color: var(--amber-deep); }
.bl .field input, .bl .field textarea { font: 14px/1.4 var(--font); border: 0; border-radius: 10px; background: #fff; box-shadow: inset 0 0 0 1px rgba(23, 24, 26, .18); transition: box-shadow .25s; }
.bl .field input { height: 44px; padding: 0 12px; }
.bl .field textarea { min-height: 96px; padding: 11px 12px; }
.bl .field input::placeholder, .bl .field textarea::placeholder { color: #8b8f96; }
.bl .field input:focus, .bl .field textarea:focus { outline: 0; box-shadow: inset 0 0 0 1.5px var(--ink), 0 0 0 4px rgba(242, 163, 58, .2); }
.bl .field [aria-invalid="true"] { box-shadow: inset 0 0 0 1.5px var(--red); }
.bl .qf__actions { margin-top: 18px; gap: 12px 16px; }
.bl .qf__actions .btn--dark { border-radius: var(--r-pill); color: var(--on-dark); background: linear-gradient(180deg, #2a2b30, #17181a);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .08) inset, 0 14px 26px -14px rgba(0, 0, 0, .6); transition: transform .25s var(--vis-ease), box-shadow .25s var(--vis-ease); }
.bl .qf__actions .btn--dark:hover { transform: translateY(-1px); box-shadow: 0 1px 0 rgba(255, 255, 255, .08) inset, 0 18px 30px -14px rgba(0, 0, 0, .7); }
.bl .qf__actions .btn--dark::after { content: ""; flex: none; width: 16px; height: 16px; background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 8h10M9 4l4 4-4 4'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23000' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 8h10M9 4l4 4-4 4'/%3E%3C/svg%3E") center / contain no-repeat; }
.bl .qf__privacy { font-size: 11.5px; line-height: 1.45; color: var(--subtle); }

/* 工厂 / 品牌 / FAQ 窄屏（高保真稿第 501–598 行：1180 → 1199、1020 → 1023、640 → 767） */
@media (max-width: 1199px) {
  .bb__grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}
@media (max-width: 1023px) {
  .bfac__head { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .bfac__grid, .bl__grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 767px) {
  .bfac, .bl { padding: 72px 0 80px; }
  .bf__face { border-radius: 22px; }
  .bf__face--f { min-height: 440px; }
  /* 窄屏正面文字占到卡片上半部：渐变更早压暗，文字压在实拍上也读得清 */
  .bf__face--f::after { background: linear-gradient(180deg, rgba(0, 0, 0, .5) 0%, rgba(0, 0, 0, .12) 16%, rgba(8, 8, 10, .78) 42%, rgba(8, 8, 10, .94) 100%); }
  .bf__btm { grid-template-columns: minmax(0, 1fr); padding: 80px 18px 20px; }
  .bf__btm h3 { font-size: 24px; }
  .bf__mini { gap: 10px 16px; }
  .bf__face--b { padding: 20px 18px; }
  .bf__face--b > .bf__loc { display: none; }  /* 正面就在上方，地点不重复（高保真稿 .face--b .hd） */
  .bf__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 0; }
  .bf__facts > div:not(:nth-child(3n+1)) { padding-left: 0; border-left: 0; }
  .bf__facts > div:nth-child(2n) { padding-left: 12px; border-left: 1px solid rgba(255, 255, 255, .08); }
  .bf__facts dd .cnt, .bf__facts dd.is-word, .bf__facts dd i { font-size: 24px; }
  .bf__caps { grid-template-columns: minmax(0, 1fr); }
  .bf__thumbs { flex-wrap: wrap; }
  .bf__thumbs figure { flex: 1 1 0; width: auto; min-width: 0; height: 70px; }
  .bf__go { flex: 1 1 100%; align-items: flex-start; margin: 4px 0 0; text-align: left; }
  .bb__hd { flex-direction: column; align-items: flex-start; }
  .bb__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
  .bb__card > b { letter-spacing: .06em; }
  .bl .qf { padding: 24px 16px 22px; border-radius: 20px; }
  .bl .qf::before { left: 16px; right: 16px; }
  .bl .qf__title { font-size: 26px; }
  .bl .field-grid--2 { grid-template-columns: minmax(0, 1fr); }
  .bl .vqa__a .b2v { margin: 0 8px 20px 54px; }
  .b2v--moq > div { grid-template-columns: minmax(0, 1fr) max-content; }
  .b2v--moq .vlog { grid-column: 1 / -1; grid-row: 2; }
}
@media (prefers-reduced-motion: reduce) {
  .bf.is-flippable .bf__in { transition: none; }
  .bf.is-flippable .bf__face { transition: opacity .01s; }
  .bl__sel.is-flash { animation: none; }
  .bf__rngbar i, .bf__flip, .bb__card, .bb__card::after, .bb__pic img, .bb__cnt::after, .bl__seg button, .bl__seg button::before, .bl .field input, .bl .field textarea, .bl .qf__actions .btn--dark { transition: none; }
  .bb__card:hover, .bb__card:hover .bb__pic img { transform: none; }
}