/* ==========================================================================
   HUAYIN FLUID — process section for liquid beverages
   Static site stylesheet. No frameworks, no build step.
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root {
  --ink: #0f1720;
  --ink-soft: #24313d;
  --ink-mute: #5c6b77;
  --steel: #8a99a4;
  --line: #dde3e6;
  --line-strong: #c3ccd1;
  --paper: #f6f5f1;
  --paper-warm: #efece5;
  --white: #ffffff;
  --copper: #a95c33;
  --copper-dark: #8a4826;
  --copper-tint: #f3e7de;
  --ok: #3f6b4f;

  --font-sans: "Inter", "Helvetica Neue", "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas,
    "Liberation Mono", monospace;

  --max: 1240px;
  --gutter: clamp(20px, 4vw, 56px);
  --radius: 2px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

::selection {
  background: var(--copper);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

/* ---------- 3. Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow {
  max-width: 920px;
}

.section {
  padding-block: clamp(64px, 9vw, 128px);
  position: relative;
}

.section--tight {
  padding-block: clamp(48px, 6vw, 80px);
}

.section--paper {
  background: var(--paper);
}

.section--white {
  background: var(--white);
}

.section--ink {
  background: var(--ink);
  color: #eef1f2;
}

.section--warm {
  background: var(--paper-warm);
}

hr.rule {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--ink);
  color: #fff;
  padding: 12px 18px;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* ---------- 4. Typography ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
  font-family: var(--font-mono);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.section--ink .eyebrow {
  color: #d8a184;
}

.display {
  font-size: clamp(38px, 5.4vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 600;
}

.h1 {
  font-size: clamp(32px, 4.2vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  font-weight: 600;
}

.h2 {
  font-size: clamp(27px, 3.2vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.h3 {
  font-size: clamp(19px, 1.5vw, 22px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 600;
}

.h4 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.lede {
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 62ch;
}

.body {
  color: var(--ink-mute);
  max-width: 68ch;
}

.small {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-mute);
}

.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
}

.kicker-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

/* ---------- 5. Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: 76px;
  display: flex;
  align-items: center;
  background: var(--paper);
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.site-header.is-scrolled {
  background: #f2f1ec;
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border: 1px solid var(--ink);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 8px;
  height: 8px;
  background: var(--copper);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  font-size: 13.5px;
  padding: 9px 12px;
  color: var(--ink-soft);
  position: relative;
  transition: color 0.2s;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 1px;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
}

.nav a:hover::after,
.nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease),
    background 0.2s var(--ease);
}

.lang:hover {
  border-color: var(--ink);
  color: var(--ink);
  background: var(--white);
}

.header-phone {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  position: relative;
}

.nav-toggle span {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.nav-toggle span:nth-child(1) {
  top: 16px;
}
.nav-toggle span:nth-child(2) {
  top: 21px;
}
.nav-toggle span:nth-child(3) {
  top: 26px;
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}
body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease), transform 0.2s var(--ease);
  white-space: nowrap;
}

.btn svg {
  width: 15px;
  height: 15px;
  transition: transform 0.25s var(--ease);
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn--primary {
  background: var(--ink);
  color: #fff;
}

.btn--primary:hover {
  background: var(--copper);
}

.btn--outline {
  border-color: var(--line-strong);
  color: var(--ink);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--ink);
}

.btn--light {
  background: #fff;
  color: var(--ink);
}

.btn--light:hover {
  background: var(--copper);
  color: #fff;
}

.btn--ghost-light {
  border-color: rgba(255, 255, 255, 0.22);
  color: #fff;
}

.btn--ghost-light:hover {
  border-color: #fff;
}

.btn--sm {
  padding: 10px 16px;
  font-size: 12.5px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--copper);
  border-bottom: 1px solid rgba(169, 92, 51, 0.3);
  padding-bottom: 2px;
  transition: border-color 0.2s, gap 0.2s;
}

.text-link:hover {
  border-color: var(--copper);
  gap: 12px;
}

.text-link svg {
  width: 14px;
  height: 14px;
}

/* ---------- 7. Hero ---------- */
.hero {
  padding-top: 140px;
  padding-bottom: clamp(48px, 6vw, 80px);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse 80% 60% at 70% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(
    ellipse 80% 60% at 70% 30%,
    #000 20%,
    transparent 75%
  );
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.hero-copy .display {
  margin-top: 22px;
}

.hero-copy .lede {
  margin-top: 26px;
  max-width: 52ch;
}

.hero-actions {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-meta {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.hero-meta dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 5px;
}

.hero-meta dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.hero-panel {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 22px;
  position: relative;
  box-shadow: 0 24px 60px -40px rgba(15, 23, 32, 0.45);
}

.hero-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.hero-panel-head .mono {
  color: var(--steel);
}

.hero-panel svg {
  width: 100%;
  height: auto;
}

.hero-panel-foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--steel);
  text-transform: uppercase;
}

.flow-dash {
  stroke-dasharray: 5 5;
  animation: dash 22s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: -200;
  }
}

/* ---------- 8. Trust strip ---------- */
.trust {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.trust-item {
  padding: 28px 26px;
  border-right: 1px solid var(--line);
}

.trust-item:last-child {
  border-right: 0;
}

.trust-item .num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  display: block;
  color: var(--ink);
}

.trust-item .num em {
  font-style: normal;
  font-size: 13px;
  color: var(--ink-mute);
  margin-left: 2px;
}

.trust-item .lbl {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--ink-mute);
  line-height: 1.45;
}

/* ---------- 9. Section head ---------- */
.section-head {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(24px, 5vw, 64px);
  align-items: end;
  margin-bottom: clamp(36px, 5vw, 60px);
}

.section-head .h2 {
  margin-top: 16px;
  max-width: 20ch;
}

.section-head .body {
  padding-bottom: 6px;
}

.section-head--center {
  display: block;
  text-align: center;
}

.section-head--center .h2 {
  margin-inline: auto;
}

/* ---------- 10. Scope: in / out ---------- */
.scope-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 0;
  border: 1px solid var(--line);
  background: var(--white);
}

.scope-col {
  padding: clamp(24px, 3vw, 40px);
}

.scope-col + .scope-col {
  border-left: 1px solid var(--line);
  background: #fbfaf8;
}

.scope-col h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  font-weight: 600;
}

.tag-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tag-dot--in {
  background: var(--copper);
  box-shadow: 0 0 0 4px var(--copper-tint);
}

.tag-dot--out {
  background: var(--steel);
  box-shadow: 0 0 0 4px #edf0f1;
}

.scope-list {
  margin-top: 24px;
  display: grid;
  gap: 0;
}

.scope-list li {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14.5px;
  line-height: 1.5;
}

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

.scope-list li::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--copper);
  flex-shrink: 0;
  margin-top: 11px;
}

.scope-col--out .scope-list li {
  color: var(--ink-mute);
}

.scope-col--out .scope-list li::before {
  background: var(--line-strong);
}

.scope-note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.6;
}

/* ---------- 11. Equipment cards ---------- */
.eq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.eq-card {
  background: var(--white);
  padding: clamp(24px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  min-height: 300px;
  position: relative;
  transition: background 0.25s var(--ease);
}

.eq-card:hover {
  background: #fcfbf9;
}

.eq-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 2px;
  background: var(--copper);
  transition: width 0.35s var(--ease);
}

.eq-card:hover::before {
  width: 100%;
}

.eq-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--steel);
  display: flex;
  justify-content: space-between;
}

.eq-icon {
  margin: 26px 0 22px;
  height: 64px;
  display: flex;
  align-items: center;
}

.eq-icon svg {
  height: 100%;
  width: auto;
  max-width: 100%;
}

.eq-card h3 {
  font-size: 18px;
  letter-spacing: -0.01em;
  font-weight: 600;
}

.eq-card p {
  margin-top: 9px;
  font-size: 13.8px;
  color: var(--ink-mute);
  line-height: 1.6;
}

.eq-spec {
  margin-top: auto;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.eq-card .text-link {
  margin-top: 16px;
  font-size: 12.5px;
  align-self: flex-start;
}

/* supporting scope strip */
.support {
  margin-top: 28px;
  border: 1px solid var(--line);
  background: var(--white);
  display: grid;
  grid-template-columns: 230px 1fr;
}

.support-head {
  padding: 22px 24px;
  border-right: 1px solid var(--line);
  background: #fbfaf8;
}

.support-head .mono {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}

.support-head h4 {
  margin-top: 7px;
  font-size: 14.5px;
  font-weight: 600;
}

.support-body {
  padding: 18px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.support-body .chip {
  background: transparent;
}

.support-note {
  flex-basis: 100%;
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.6;
  margin-top: 4px;
}

/* ---------- 12. Process band ---------- */
.process {
  background: var(--ink);
  color: #e8ecee;
}

.process .h2 {
  color: #fff;
}

.process .body {
  color: #a9b4bc;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
  margin-top: 48px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.process-step {
  background: var(--ink);
  padding: 26px 22px 30px;
  position: relative;
}

.process-step .n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: #d8a184;
  letter-spacing: 0.14em;
}

.process-step h4 {
  margin-top: 16px;
  font-size: 15.5px;
  color: #fff;
}

.process-step p {
  margin-top: 8px;
  font-size: 12.8px;
  line-height: 1.55;
  color: #9aa7b0;
}

.process-foot {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: #8d9aa3;
  text-transform: uppercase;
}

/* ---------- 13. References ---------- */
.ref-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.ref-row {
  display: grid;
  grid-template-columns: 200px 1fr 180px;
  gap: clamp(20px, 3vw, 48px);
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.ref-region {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  padding-top: 3px;
}

.ref-main h4 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.ref-main p {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--ink-mute);
  max-width: 62ch;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 9px;
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  white-space: nowrap;
}

.status::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--steel);
}

.status--delivered {
  border-color: #c7d6cb;
  color: var(--ok);
  background: #f2f6f3;
}

.status--delivered::before {
  background: var(--ok);
}

.status--execution {
  border-color: #e0cdbf;
  color: var(--copper-dark);
  background: #fbf4ef;
}

.status--execution::before {
  background: var(--copper);
}

/* ---------- 14. Compliance block ---------- */
.compliance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}

.doc-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.doc-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.doc-item .n {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--steel);
  padding-top: 3px;
}

.doc-item strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
}

.doc-item span {
  display: block;
  font-size: 12.8px;
  color: var(--ink-mute);
  margin-top: 2px;
  line-height: 1.5;
}

.notice {
  border: 1px solid var(--line-strong);
  background: var(--white);
  padding: 24px;
  position: relative;
}

.notice::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--copper);
}

.notice h4 {
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper);
}

.notice p {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink-soft);
}

.notice p + p {
  margin-top: 10px;
}

/* ---------- 15. CTA band ---------- */
.cta-band {
  background: var(--copper);
  color: #fff;
  padding-block: clamp(48px, 6vw, 80px);
}

.cta-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.cta-band .h2 {
  color: #fff;
  max-width: 22ch;
}

.cta-band p {
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  max-width: 54ch;
}

.cta-actions {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 16. Page header (inner pages) ---------- */
.page-head {
  padding-top: 132px;
  padding-bottom: clamp(36px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 26px;
}

.breadcrumb a:hover {
  color: var(--copper);
}

.breadcrumb span {
  opacity: 0.5;
}

.page-head-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(24px, 5vw, 64px);
  align-items: end;
}

.page-head .lede {
  margin-top: 20px;
}

.page-head-aside {
  border-left: 1px solid var(--line);
  padding-left: clamp(20px, 3vw, 36px);
}

.page-head-aside dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-head-aside dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-head-aside dd {
  margin: 3px 0 0;
  font-size: 14px;
  font-weight: 500;
}

/* ---------- 17. Equipment detail ---------- */
.eq-detail {
  padding-block: clamp(56px, 7vw, 96px);
  border-bottom: 1px solid var(--line);
}

.eq-detail:last-child {
  border-bottom: 0;
}

.eq-detail-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.eq-detail-figure {
  border: 1px solid var(--line);
  background: var(--white);
  padding: 28px;
  position: sticky;
  top: 100px;
}

.eq-detail-figure svg {
  width: 100%;
  height: auto;
}

.eq-figure-cap {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.eq-detail-body .h2 {
  margin-top: 14px;
}

.spec-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.chip {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  border: 1px solid var(--line-strong);
  padding: 6px 10px;
  color: var(--ink-soft);
  background: var(--white);
}

.feature-list {
  margin-top: 26px;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.feature-list li {
  padding: 12px 0 12px 24px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.55;
  position: relative;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 10px;
  height: 1px;
  background: var(--copper);
}

.feature-list strong {
  font-weight: 600;
}

/* ---------- 18. Tables ---------- */
.table-wrap {
  margin-top: 28px;
  border: 1px solid var(--line);
  background: var(--white);
  overflow-x: auto;
}

table.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 620px;
}

table.spec caption {
  text-align: left;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  border-bottom: 1px solid var(--line);
}

table.spec th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
  padding: 11px 16px;
  background: #faf9f6;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

table.spec td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

table.spec tr:last-child td {
  border-bottom: 0;
}

table.spec tbody tr:hover {
  background: #fcfbf9;
}

table.spec td:first-child {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink);
  white-space: nowrap;
}

.table-note {
  margin-top: 12px;
  font-size: 12px;
  color: var(--steel);
  line-height: 1.55;
}

/* ---------- 19. Solutions ---------- */
.sol-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.sol-card {
  background: var(--white);
  padding: clamp(26px, 3vw, 40px);
}

.sol-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.sol-card-head .mono {
  color: var(--steel);
  font-size: 11px;
}

.sol-card h3 {
  font-size: 21px;
  letter-spacing: -0.015em;
}

.sol-beverages {
  margin-top: 14px;
  font-size: 13px;
  color: var(--ink-mute);
}

.sol-flow {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.sol-flow span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.03em;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 4px 8px;
  color: var(--ink-soft);
}

.sol-flow i {
  color: var(--steel);
  font-style: normal;
  font-size: 10px;
}

.sol-params {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.sol-params div {
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.sol-params dt {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}

.sol-params dd {
  margin: 3px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

/* ---------- 20. Company / stats ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.stat {
  background: var(--white);
  padding: 26px;
}

.stat .v {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3vw, 34px);
  letter-spacing: -0.03em;
  line-height: 1;
  display: block;
}

.stat .k {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--ink-mute);
  line-height: 1.45;
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.step .n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--copper);
  letter-spacing: 0.1em;
  padding-top: 4px;
}

.step h4 {
  font-size: 15.5px;
}

.step p {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--ink-mute);
  max-width: 60ch;
}

/* ---------- 21. Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.contact-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  margin-top: 30px;
}

.contact-list > div {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.contact-list dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}

.contact-list dd {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.55;
}

.contact-list a {
  border-bottom: 1px solid var(--line-strong);
  transition: border-color 0.2s;
}

.contact-list a:hover {
  border-color: var(--copper);
  color: var(--copper);
}

.form {
  background: var(--white);
  border: 1px solid var(--line);
  padding: clamp(24px, 3vw, 40px);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 7px;
}

.field label .req {
  color: var(--copper);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  background: #fcfcfa;
  padding: 12px 13px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  border-radius: 0;
  transition: border-color 0.2s, background 0.2s;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--ink);
  background: #fff;
}

.field textarea {
  min-height: 120px;
  resize: vertical;
}

.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-mute) 50%),
    linear-gradient(135deg, var(--ink-mute) 50%, transparent 50%);
  background-position: calc(100% - 18px) 18px, calc(100% - 13px) 18px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.form-foot p {
  font-size: 11.5px;
  color: var(--steel);
  line-height: 1.5;
  max-width: 36ch;
}

.form-status {
  margin-top: 16px;
  font-size: 13px;
  padding: 12px 14px;
  border: 1px solid #c7d6cb;
  background: #f2f6f3;
  color: var(--ok);
  display: none;
}

.form-status.is-visible {
  display: block;
}

.map-box {
  margin-top: 28px;
  border: 1px solid var(--line);
  background: var(--white);
  padding: 20px;
}

.map-box svg {
  width: 100%;
  height: auto;
}

/* ---------- 22. Footer ---------- */
.site-footer {
  background: var(--ink);
  color: #c3cdd4;
  padding-top: clamp(48px, 6vw, 72px);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: 48px;
}

.site-footer .brand-mark {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.site-footer .brand-name {
  color: #fff;
}

.site-footer .brand-sub {
  color: #8f9ea8;
}

.footer-about p {
  margin-top: 18px;
  font-size: 13px;
  line-height: 1.7;
  color: #98a6b0;
  max-width: 34ch;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #7f8f9a;
  margin-bottom: 16px;
}

.footer-col li {
  margin-bottom: 9px;
}

.footer-col a {
  font-size: 13px;
  color: #c3cdd4;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #fff;
}

.footer-contact li {
  font-size: 13px;
  line-height: 1.6;
  color: #c3cdd4;
  margin-bottom: 12px;
}

.footer-contact .label {
  display: block;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #7f8f9a;
  margin-bottom: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-block: 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 11.5px;
  color: #7f8f9a;
}

.footer-bottom .mono {
  font-size: 10.5px;
  letter-spacing: 0.05em;
}

/* ---------- 23. Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 24. Responsive ---------- */
@media (max-width: 1080px) {
  .nav {
    gap: 0;
  }
  .nav a {
    padding: 9px 9px;
    font-size: 13px;
  }
  .header-phone {
    display: none;
  }
  .eq-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
  .footer-contact {
    grid-column: 1 / -1;
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
  }
  .footer-contact li {
    margin: 0;
  }
}

@media (max-width: 900px) {
  .site-header {
    height: 68px;
  }
  .nav {
    position: fixed;
    inset: 68px 0 0 0;
    background: var(--paper);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 20px var(--gutter) 40px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
    overflow-y: auto;
  }
  body.nav-open .nav {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .nav a {
    font-size: 20px;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    letter-spacing: -0.01em;
  }
  .nav a::after {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .header-cta .btn {
    display: none;
  }
  .hero {
    padding-top: 108px;
  }
  .hero-grid,
  .section-head,
  .page-head-grid,
  .eq-detail-grid,
  .compliance-grid,
  .split,
  .contact-grid,
  .cta-grid {
    grid-template-columns: 1fr;
  }
  .hero-panel {
    order: 2;
  }
  .hero-meta {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px 12px;
  }
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .trust-item:nth-child(2) {
    border-right: 0;
  }
  .trust-item:nth-child(1),
  .trust-item:nth-child(2) {
    border-bottom: 1px solid var(--line);
  }
  .scope-grid {
    grid-template-columns: 1fr;
  }
  .scope-col + .scope-col {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ref-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .eq-detail-figure {
    position: static;
  }
  .sol-grid {
    grid-template-columns: 1fr;
  }
  .page-head-aside {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 24px;
  }
  .page-head-aside dl {
    grid-template-columns: 1fr 1fr;
  }
  .step {
    grid-template-columns: 40px 1fr;
  }
  .eq-grid {
    grid-template-columns: 1fr;
  }
  .support {
    grid-template-columns: 1fr;
  }
  .support-head {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 620px) {
  .eq-grid,
  .process-grid,
  .stat-grid,
  .sol-params,
  .form-row {
    grid-template-columns: 1fr;
  }
  .process-step {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-about {
    grid-column: 1 / -1;
  }
  .cta-actions {
    justify-content: flex-start;
  }
  .form-foot {
    flex-direction: column;
    align-items: flex-start;
  }
  .form-foot .btn {
    width: 100%;
  }
  .hero-meta {
    grid-template-columns: 1fr 1fr;
  }
  .ref-main p {
    font-size: 13px;
  }
  .eq-card {
    min-height: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 25. Print ---------- */
@media print {
  .site-header,
  .nav-toggle,
  .header-cta,
  .cta-band,
  .site-footer {
    display: none;
  }
  body {
    background: #fff;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 26. Chinese typography ---------- */
html[lang="zh-CN"] body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans SC", var(--font-sans);
  letter-spacing: 0;
}

html[lang="zh-CN"] .display {
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.24;
  letter-spacing: 0;
  max-width: 13em;
}

html[lang="zh-CN"] .h1 {
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.28;
  letter-spacing: 0;
}

html[lang="zh-CN"] .h2 {
  font-size: clamp(23px, 2.7vw, 33px);
  line-height: 1.32;
  letter-spacing: 0;
}

html[lang="zh-CN"] .h3 {
  letter-spacing: 0;
}

html[lang="zh-CN"] .lede {
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.8;
}

html[lang="zh-CN"] .body,
html[lang="zh-CN"] .small,
html[lang="zh-CN"] .scope-list li,
html[lang="zh-CN"] .feature-list li,
html[lang="zh-CN"] .doc-item span {
  line-height: 1.8;
}

html[lang="zh-CN"] .eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.14em;
}

html[lang="zh-CN"] .mono,
html[lang="zh-CN"] .kicker-num,
html[lang="zh-CN"] .brand-name {
  letter-spacing: 0.05em;
}

html[lang="zh-CN"] .brand-sub {
  letter-spacing: 0.04em;
  font-size: 9.5px;
}

html[lang="zh-CN"] .section-head .h2 {
  max-width: 24em;
}

html[lang="zh-CN"] .btn {
  letter-spacing: 0.04em;
}

html[lang="zh-CN"] .nav a {
  letter-spacing: 0;
}

html[lang="zh-CN"] table.spec th,
html[lang="zh-CN"] .eq-spec,
html[lang="zh-CN"] .chip {
  letter-spacing: 0.02em;
}

html[lang="zh-CN"] .display br {
  display: none;
}

/* ============ 27. FAQ 折叠 ============ */
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 40px 18px 0;
  font-weight: 600;
  font-size: 17px;
  line-height: 1.45;
  list-style: none;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "";
  position: absolute;
  right: 6px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--copper);
  border-bottom: 1.5px solid var(--copper);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .18s ease;
}
.faq-item[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq-a { padding: 0 40px 22px 0; }
.faq-a p { color: var(--ink-soft); line-height: 1.75; margin: 0; }
@media (max-width: 640px) {
  .faq-item summary { font-size: 16px; padding-right: 32px; }
  .faq-a { padding-right: 8px; }
}

/* ============ 28. WhatsApp 悬浮按钮 ============ */
.wa-float {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(15, 23, 32, .28);
  transition: transform .18s ease, box-shadow .18s ease;
}
.wa-float:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(15, 23, 32, .34); }
.wa-float svg { width: 28px; height: 28px; fill: #fff; }
@media (max-width: 640px) {
  .wa-float { right: 14px; bottom: 14px; width: 50px; height: 50px; }
}

/* ============ 29. 表单状态内复制按钮 ============ */
.copy-btn {
  margin-top: 10px;
  padding: 8px 16px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease;
}
.copy-btn:hover { border-color: var(--copper); background: var(--copper-tint); }

/* ============ 30. 首页通栏服务卡（工程管道安装） ============ */
.eq-card--wide {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  gap: clamp(20px, 3vw, 42px);
  min-height: 0;
}
.eq-card--wide .eq-icon {
  flex: 0 0 120px;
  margin: 0;
  height: 72px;
}
.eq-card--wide .eq-card-main {
  flex: 1 1 auto;
  min-width: 0;
}
.eq-card--wide .text-link {
  flex: 0 0 auto;
  white-space: nowrap;
}
@media (max-width: 900px) {
  .eq-card--wide {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
  }
  .eq-card--wide .eq-icon {
    flex-basis: auto;
    margin: 18px 0 0;
  }
  .eq-card--wide .text-link { white-space: normal; }
}

/* ============ 31. 实拍照片 ============ */
.eq-photo {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 16px;
}
.photo-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.photo-strip--two { grid-template-columns: repeat(2, 1fr); }
.photo-strip figure { margin: 0; background: var(--white); }
.photo-strip img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  filter: saturate(.94);
  transition: filter .25s var(--ease);
}
.photo-strip figure:hover img { filter: saturate(1.06); }
.photo-strip figcaption {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  color: var(--ink-mute);
  padding: 10px 12px;
  text-transform: uppercase;
}
@media (max-width: 900px) {
  .photo-strip { grid-template-columns: repeat(2, 1fr); }
}

[hidden] { display: none !important; }

/* ============ 32. 设备页页内导航 ============ */
.eq-nav {
  position: sticky;
  top: 76px;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.eq-nav-row {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.eq-nav-row::-webkit-scrollbar { display: none; }
.eq-nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-mute);
  text-decoration: none;
  padding: 13px 14px;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.eq-nav a:hover { color: var(--ink); }
.eq-nav a:focus-visible { outline: 2px solid var(--copper); outline-offset: -2px; border-radius: 2px; }
.eq-detail { scroll-margin-top: 44px; } /* html scroll-padding 96 + 44 = 140，正好让出吸顶导航 */

/* ============ 33. 触控目标保底 ============ */
@media (pointer: coarse) {
  .text-link, .footer-col a, .footer-bottom a, .scope-list a, .feature-list a {
    padding: 8px 0;
    display: inline-block;
  }
  .lang { padding: 10px 12px; }
}

/* ============ 34. 溢出兜底 ============ */
/* 带 width/height 属性的图片在 grid/flex 子项里仍会按固有宽度撑破容器，
   显式压住并给 grid 子项 min-width:0，避免小屏横向滚动。 */
img, svg, video {
  max-width: 100%;
}
.eq-detail-grid > *,
.split > *,
.cta-grid > *,
.hero-grid > *,
.section-head > *,
.page-head-grid > *,
.contact-grid > *,
.compliance-grid > * {
  min-width: 0;
}
.eq-detail-figure {
  min-width: 0;
}

/* ============ 35. 客户来访三列相册 ============ */
.photo-strip--three { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) {
  .photo-strip--three { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .photo-strip--three { grid-template-columns: 1fr; }
  .photo-strip--three figure { margin-bottom: 14px; }
}

/* §36 图纸区块（设备页 06） */
.drawing-wide {
  margin: 34px 0 0;
  background: var(--white);
  border: 1px solid var(--line);
  min-width: 0;
}
.drawing-wide img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
}
.drawing-wide .eq-figure-cap {
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}