/*
Theme Name: Wantuo Advanced Materials
Theme URI: https://nantong-wantuo.com
Author: Wantuo Digital Team
Author URI: https://nantong-wantuo.com
Description: A dark, editorial industrial theme for an advanced clad-materials manufacturer.
Version: 1.1.1
Text Domain: wantuo-clad
*/

:root {
  --coal: #0a0c0b;
  --coal-2: #121513;
  --panel: #181c19;
  --paper: #eceee8;
  --paper-2: #d9dcd4;
  --ink: #111411;
  --muted: #92998f;
  --line: rgba(236, 238, 232, .16);
  --line-dark: rgba(17, 20, 17, .18);
  --signal: #d8ff3e;
  --signal-dark: #829b11;
  --oxide: #d46d36;
  --rail: 92px;
  --page: 1320px;
  --radius: 0;
}

* { box-sizing: border-box; }
html { direction: ltr !important; scroll-behavior: smooth; }
body {
	direction: ltr;
	text-align: left;
  margin: 0;
  color: var(--paper);
  background: var(--coal);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { direction: ltr; font: inherit; text-align: left; }
button { color: inherit; }
img { display: block; max-width: 100%; }
::selection { background: var(--signal); color: var(--ink); }
.skip-link { position: fixed; top: -100px; left: 108px; z-index: 1000; padding: 10px 15px; background: var(--signal); color: var(--ink); font-weight: 800; }
.skip-link:focus { top: 10px; }
.page-shell { margin-left: var(--rail); }
.wrap { width: min(var(--page), calc(100% - 80px)); margin-inline: auto; }
.micro { margin: 0; color: var(--muted); font-size: .76rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.micro--dark { color: #61675e; }
.micro--signal { color: var(--signal); }
.section-index { color: var(--signal); font-family: Georgia, serif; font-size: 1.1rem; font-style: italic; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-weight: 600; }
h1 { margin-bottom: 28px; font-size: clamp(4rem, 9.3vw, 9.7rem); line-height: .78; letter-spacing: -.078em; }
h2 { margin-bottom: 20px; font-size: clamp(2.55rem, 5.2vw, 5.5rem); line-height: .92; letter-spacing: -.06em; }
h3 { margin-bottom: 10px; font-size: 1.22rem; line-height: 1.25; }
.section-title { max-width: 900px; }
.section-copy { max-width: 630px; color: #abb1a8; font-size: 1.06rem; }

.side-rail {
  position: fixed;
  z-index: 70;
  inset: 0 auto 0 0;
  width: var(--rail);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  background: var(--signal);
  color: var(--ink);
}
.rail-mark { width: 46px; height: 46px; display: grid; place-items: center; border: 2px solid var(--ink); font-weight: 900; letter-spacing: -.08em; }
.rail-label { writing-mode: vertical-rl; transform: rotate(180deg); font-size: .68rem; font-weight: 900; letter-spacing: .2em; text-transform: uppercase; }
.rail-year { font-size: .68rem; font-weight: 900; }

.site-header { position: absolute; z-index: 60; top: 0; right: 0; left: var(--rail); border-bottom: 1px solid var(--line); }
.site-header__inner { width: min(var(--page), calc(100% - 80px)); min-height: 96px; margin-inline: auto; display: grid; grid-template-columns: minmax(360px, 1fr) auto minmax(140px, .55fr); align-items: center; gap: 22px; }
.wordmark { min-width: 0; display: flex; align-items: center; gap: 13px; }
.wordmark__logo { width: 52px; height: 52px; flex: 0 0 52px; display: block; }
.wordmark__text { min-width: 0; display: grid; gap: 2px; line-height: 1.05; }
.wordmark__text > strong { color: var(--paper); font-size: 1.04rem; font-weight: 950; letter-spacing: .1em; }
.wordmark__legal { display: grid; gap: 2px; color: #8f978d; font-size: .47rem; font-weight: 800; letter-spacing: .065em; text-transform: uppercase; white-space: nowrap; }
.wordmark__legal span:last-child { color: #b3bab0; font-size: .58rem; letter-spacing: .14em; text-transform: none; }
.main-nav { display: flex; align-items: center; gap: 21px; color: #b4bab1; font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.main-nav a { position: relative; padding: 30px 0; }
.main-nav a::before { content: ""; position: absolute; left: 0; right: 100%; bottom: 22px; height: 2px; background: var(--signal); transition: right .2s ease; }
.main-nav a:hover::before, .main-nav a:focus-visible::before, .main-nav a[aria-current="page"]::before { right: 0; }
.main-nav a[aria-current="page"] { color: var(--paper); }
.nav-contact { display: none; }
.header-action { justify-self: end; display: inline-flex; align-items: center; gap: 12px; font-size: .78rem; font-weight: 900; letter-spacing: .07em; text-transform: uppercase; }
.header-action i { width: 9px; height: 9px; background: var(--signal); border-radius: 50%; box-shadow: 0 0 0 5px rgba(216,255,62,.13); }
.nav-toggle { display: none; width: 46px; height: 46px; border: 1px solid var(--line); background: transparent; cursor: pointer; }

.hero { min-height: 830px; display: grid; grid-template-columns: 1.15fr .85fr; border-bottom: 1px solid var(--line); }
.hero__copy { min-width: 0; display: flex; flex-direction: column; justify-content: flex-end; padding: 150px 5vw 66px max(5vw, calc((100vw - var(--rail) - var(--page)) / 2)); }
.hero__eyebrow { display: flex; align-items: center; gap: 15px; margin-bottom: 65px; }
.hero__eyebrow::before { content: ""; width: 54px; height: 1px; background: var(--signal); }
.hero h1 span { display: block; color: transparent; -webkit-text-stroke: 1px #858c83; }
.hero__under { display: grid; grid-template-columns: 1.1fr .9fr; gap: 42px; align-items: end; }
.hero__under p { max-width: 520px; margin: 0; color: #aeb5ab; font-size: 1.08rem; }
.hero__cta { display: inline-flex; align-items: center; justify-content: space-between; min-height: 58px; padding: 15px 18px; background: var(--signal); color: var(--ink); font-size: .82rem; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; transition: background .2s, transform .2s; }
.hero__cta:hover { background: white; transform: translateY(-2px); }
.hero__cta span { font-size: 1.25rem; }
.hero__visual { position: relative; min-width: 0; overflow: hidden; background: #252a25; }
.hero__visual::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7,9,8,.06), rgba(7,9,8,.66)), url('assets/real-worker-factory.jpg') 29% center/cover; filter: saturate(.72) contrast(1.04); transform: scale(1.015); }
.hero__visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, transparent 0 52%, rgba(216,255,62,.2) 52% 53%, transparent 53%); }
.hero__stamp { position: absolute; z-index: 2; right: 26px; top: 118px; width: 176px; height: 176px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.5); border-radius: 50%; text-align: center; font-size: .67rem; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; transform: rotate(8deg); }
.hero__stamp::before { content: ""; width: 46px; height: 46px; border: 7px double var(--signal); transform: rotate(45deg); }
.hero__plate { position: absolute; z-index: 3; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: repeat(3, 1fr); background: rgba(8,10,9,.88); backdrop-filter: blur(10px); }
.hero-stat { min-height: 110px; padding: 23px; border-left: 1px solid var(--line); }
.hero-stat strong { display: block; color: var(--signal); font-size: 1.55rem; letter-spacing: -.04em; }
.hero-stat span { color: #8f978d; font-size: .68rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }

.ticker { overflow: hidden; border-bottom: 1px solid var(--line); background: var(--coal-2); }
.ticker__track { width: max-content; display: flex; gap: 54px; padding: 19px 0; animation: ticker 28s linear infinite; color: #858c83; font-size: .74rem; font-weight: 800; text-transform: uppercase; letter-spacing: .16em; }
.ticker__track span::before { content: "+"; margin-right: 14px; color: var(--signal); }
@keyframes ticker { to { transform: translateX(-50%); } }

.matrix { padding: 112px 0 128px; background: var(--paper); color: var(--ink); }
.matrix__head { display: grid; grid-template-columns: 1.2fr .8fr; gap: 60px; align-items: end; margin-bottom: 66px; }
.matrix__head p:last-child { max-width: 520px; margin: 0; color: #5f665d; font-size: 1rem; }
.matrix__body { display: grid; grid-template-columns: .7fr 1.3fr; border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.matrix__nav { border-right: 1px solid var(--line-dark); }
.matrix-tab { width: 100%; min-height: 82px; display: grid; grid-template-columns: 42px 1fr 30px; align-items: center; gap: 16px; padding: 12px 22px; border: 0; border-bottom: 1px solid var(--line-dark); background: transparent; color: #596057; text-align: left; cursor: pointer; }
.matrix-tab:last-child { border-bottom: 0; }
.matrix-tab span:first-child { font-family: Georgia, serif; font-style: italic; }
.matrix-tab strong { font-size: 1rem; }
.matrix-tab i { justify-self: end; width: 21px; height: 21px; display: grid; place-items: center; border: 1px solid #979e95; border-radius: 50%; font-style: normal; transition: .2s; }
.matrix-tab:hover, .matrix-tab[aria-selected="true"] { color: var(--ink); background: #e2e5dd; }
.matrix-tab[aria-selected="true"] i { background: var(--signal); border-color: var(--ink); transform: rotate(45deg); }
.matrix__result { min-height: 410px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 46px; align-items: center; padding: 50px 5vw; }
.matrix__result h3 { margin-bottom: 18px; font-size: clamp(2rem, 3.6vw, 4rem); letter-spacing: -.055em; }
.matrix__result p { max-width: 520px; color: #646b62; }
.matrix__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.matrix__tags span { padding: 8px 11px; border: 1px solid #a5aba2; font-size: .68rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.material-diagram { position: relative; min-height: 260px; display: grid; place-content: center; perspective: 900px; }
.material-layer { width: min(30vw, 330px); height: 54px; margin-top: -8px; border: 1px solid rgba(0,0,0,.28); background: #6f7771; box-shadow: 0 16px 28px rgba(27,31,27,.15); transform: rotateX(58deg) rotateZ(-16deg); transition: background .3s, transform .3s; }
.material-layer:nth-child(2) { background: var(--signal); }
.material-layer:nth-child(3) { height: 82px; background: #272b28; }
.matrix__result:hover .material-layer { transform: rotateX(58deg) rotateZ(-13deg) translateX(6px); }
.diagram-key { position: absolute; right: 0; bottom: 0; display: grid; gap: 7px; color: #5f665d; font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .07em; }
.diagram-key span::before { content: ""; display: inline-block; width: 18px; height: 6px; margin-right: 8px; background: #6f7771; }
.diagram-key span:nth-child(2)::before { background: var(--signal); }
.diagram-key span:nth-child(3)::before { background: #272b28; }

.method { padding: 120px 0; }
.method__heading { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: end; margin-bottom: 75px; }
.method__heading p:last-child { max-width: 570px; margin: 0; color: #9ba298; }
.method__steps { counter-reset: stage; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.stage { counter-increment: stage; min-height: 360px; padding: 30px 26px; border-right: 1px solid var(--line); }
.stage:first-child { border-left: 1px solid var(--line); }
.stage::before { content: "0" counter(stage); display: block; margin-bottom: 120px; color: var(--signal); font-family: Georgia, serif; font-size: 1.2rem; font-style: italic; }
.stage h3 { font-size: 1.35rem; }
.stage p { color: #8d958b; font-size: .88rem; }
.stage__line { display: block; width: 100%; height: 4px; margin-top: 28px; background: linear-gradient(90deg, var(--signal) 0 34%, #555d55 34% 55%, #202520 55%); }

.capability { background: var(--signal); color: var(--ink); }
.capability__grid { display: grid; grid-template-columns: .96fr 1.04fr; min-height: 720px; }
.capability__image { position: relative; min-height: 560px; background: linear-gradient(rgba(8,10,9,.04), rgba(8,10,9,.18)), url('assets/facility-wantuo-clean.png') center/cover; filter: saturate(.78) contrast(1.03); }
.capability__image::after { content: "MANUFACTURING BASE / CHINA"; position: absolute; right: 18px; bottom: 20px; padding: 8px 10px; background: var(--coal); color: var(--signal); font-size: .65rem; font-weight: 900; letter-spacing: .1em; }
.capability__copy { display: flex; flex-direction: column; justify-content: center; padding: 80px clamp(34px, 6vw, 100px); }
.capability__copy h2 { margin-top: 18px; }
.capacity-list { margin-top: 40px; border-top: 1px solid rgba(0,0,0,.25); }
.capacity { display: grid; grid-template-columns: 1fr auto; align-items: baseline; gap: 24px; padding: 18px 0; border-bottom: 1px solid rgba(0,0,0,.25); }
.capacity span { font-size: .78rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.capacity strong { font-size: 1.65rem; letter-spacing: -.04em; }

.evidence { padding: 120px 0; background: var(--coal-2); }
.evidence__grid { display: grid; grid-template-columns: .68fr 1.32fr; gap: 80px; }
.evidence__intro { position: sticky; top: 60px; align-self: start; }
.evidence__intro p:last-child { color: #959c93; }
.evidence__list { border-top: 1px solid var(--line); }
.evidence details { border-bottom: 1px solid var(--line); }
.evidence summary { min-height: 96px; display: grid; grid-template-columns: 60px 1fr 32px; align-items: center; gap: 20px; cursor: pointer; list-style: none; }
.evidence summary::-webkit-details-marker { display: none; }
.evidence summary span:first-child { color: var(--signal); font-family: Georgia, serif; font-style: italic; }
.evidence summary strong { font-size: 1.14rem; }
.evidence summary i { width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid #5d655c; border-radius: 50%; font-style: normal; transition: transform .2s; }
.evidence details[open] summary i { transform: rotate(45deg); background: var(--signal); color: var(--ink); border-color: var(--signal); }
.evidence__answer { padding: 0 60px 34px 80px; color: #959c93; }
.evidence__answer ul { margin: 18px 0 0; padding-left: 20px; }

.brief { padding: 120px 0; background: var(--paper); color: var(--ink); }
.brief__layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 80px; }
.brief__intro h2 { margin-top: 16px; }
.brief__intro p { color: #5f665d; }
.brief-builder { padding: 36px; border: 1px solid var(--line-dark); background: #e2e5dd; }
.builder-row { margin-bottom: 28px; }
.builder-row > label { display: block; margin-bottom: 11px; font-size: .71rem; font-weight: 900; text-transform: uppercase; letter-spacing: .1em; }
.choice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span { min-height: 48px; display: grid; place-items: center; padding: 9px; border: 1px solid #a7ada4; background: transparent; font-size: .75rem; font-weight: 800; text-align: center; cursor: pointer; }
.choice input:checked + span, .choice input:focus-visible + span { background: var(--ink); color: var(--signal); border-color: var(--ink); }
.builder-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.builder-field { display: grid; gap: 7px; }
.builder-field--full { grid-column: 1 / -1; }
.builder-field label { font-size: .7rem; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; }
.builder-field input, .builder-field textarea { width: 100%; padding: 13px 14px; border: 1px solid #a7ada4; border-radius: 0; background: var(--paper); color: var(--ink); outline: none; }
.builder-field input:focus, .builder-field textarea:focus { border-color: var(--ink); box-shadow: 0 0 0 3px rgba(17,20,17,.1); }
.builder-field textarea { min-height: 90px; resize: vertical; }
.brief-output { margin: 24px 0 16px; padding: 18px; background: #f4f5f1; border-left: 4px solid var(--signal-dark); color: #4e554d; font-size: .84rem; white-space: pre-line; }
.brief-action { width: 100%; min-height: 56px; border: 0; background: var(--ink); color: var(--signal); cursor: pointer; font-size: .78rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; transition: background .2s; }
.brief-action:hover { background: #30352f; }
.brief-status { min-height: 22px; margin: 9px 0 0; color: #4e6641; font-size: .78rem; font-weight: 800; }

.section-link { width: fit-content; display: flex; align-items: center; gap: 16px; margin-top: 34px; padding-bottom: 7px; border-bottom: 1px solid #737b72; color: #d8ddd4; font-size: .72rem; font-weight: 900; letter-spacing: .09em; text-transform: uppercase; }
.section-link span { color: var(--signal); font-size: 1rem; }
.section-link--dark { border-color: #7c8379; color: var(--ink); }
.section-link--dark span { color: #65720b; }
.evidence__link { grid-column: 2; }

/* Interior pages */
.inner-hero { min-height: 760px; display: grid; grid-template-columns: 1.08fr .92fr; border-bottom: 1px solid var(--line); }
.inner-hero__copy { display: flex; flex-direction: column; justify-content: flex-end; padding: 170px clamp(32px, 6vw, 92px) 82px max(5vw, calc((100vw - var(--rail) - var(--page)) / 2)); }
.inner-hero__copy .micro { margin-bottom: 62px; }
.inner-hero__copy h1, .contact-hero h1 { margin-bottom: 34px; font-size: clamp(3.75rem, 7.2vw, 7.8rem); line-height: .86; }
.inner-hero__copy h1 span, .contact-hero h1 span { color: transparent; -webkit-text-stroke: 1px #858c83; }
.inner-hero__copy > p:last-child { max-width: 670px; margin-bottom: 0; color: #a6aea3; font-size: 1.08rem; }
.inner-hero__media { position: relative; min-height: 560px; margin: 0; overflow: hidden; background: var(--panel); }
.inner-hero__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,8,7,.04), rgba(6,8,7,.58)); pointer-events: none; }
.inner-hero__media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.72) contrast(1.04); }
.inner-hero__media figcaption { position: absolute; z-index: 2; right: 22px; bottom: 22px; padding: 8px 10px; background: var(--coal); color: var(--signal); font-size: .63rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.inner-hero--offset .inner-hero__media img { object-position: 30% center; }
.inner-hero--text { grid-template-columns: 1.35fr .65fr; }

.inner-section { padding: 118px 0; }
.inner-section--light { background: var(--paper); color: var(--ink); }
.page-lead { display: grid; grid-template-columns: 1.05fr .95fr; gap: 30px 70px; align-items: end; margin-bottom: 70px; }
.page-lead .micro { grid-column: 1 / -1; }
.page-lead h2 { margin: 0; }
.page-lead > p:last-child { max-width: 600px; margin: 0; color: #61685f; }

.product-list { border-top: 1px solid var(--line-dark); }
.product-row { display: grid; grid-template-columns: 52px 1.2fr .8fr; gap: 28px; padding: 34px 0; border-bottom: 1px solid var(--line-dark); }
.product-row > span { color: var(--signal-dark); font-family: Georgia, serif; font-size: 1.1rem; font-style: italic; }
.product-row h3 { margin-bottom: 9px; font-size: 1.55rem; }
.product-row p { max-width: 670px; margin: 0; color: #666d64; }
.product-row ul { margin: 0; padding: 0; list-style: none; color: #596057; font-size: .76rem; font-weight: 900; letter-spacing: .07em; text-transform: uppercase; }
.product-row li { padding: 5px 0; border-bottom: 1px dotted #a2a89f; }

.spec-band, .decision-band { padding: 112px 0; background: var(--coal-2); }
.spec-band__grid, .decision-band__grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; }
.spec-stack { border-top: 1px solid var(--line); }
.spec-stack div { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: baseline; padding: 20px 0; border-bottom: 1px solid var(--line); }
.spec-stack span { color: #8f978d; font-size: .75rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.spec-stack strong { color: var(--paper); font-size: 1.22rem; }

.process-flow { counter-reset: flow; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.process-flow article { min-height: 290px; padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process-flow span { display: block; margin-bottom: 86px; color: var(--signal); font-family: Georgia, serif; font-size: 1.1rem; font-style: italic; }
.process-flow p { color: #929a90; font-size: .9rem; }
.interface-story__grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 90px; align-items: center; }
.interface-story__grid > div:first-child > p:not(.micro) { color: #61685f; }
.fine-print { color: #777e75 !important; font-size: .75rem !important; }
.interface-diagram { min-height: 430px; display: grid; grid-template-rows: auto 92px auto 25px auto; align-content: center; padding: 48px; background: #dfe2da; border: 1px solid var(--line-dark); }
.interface-diagram span { font-size: .7rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.interface-diagram i { display: block; background: linear-gradient(135deg, #929a94, #59615b); border: 1px solid #454b46; transform: skewX(-12deg); }
.interface-diagram b { display: block; background: repeating-linear-gradient(90deg, var(--signal-dark) 0 18px, #adc923 18px 24px); transform: skewX(12deg); }

.quality-hero-card, .sector-index { align-self: end; margin: 0 5vw 82px 0; padding: 34px; border: 1px solid var(--line); background: var(--panel); }
.quality-hero-card p { color: var(--signal); font-size: .7rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.quality-hero-card strong { display: block; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: .95rem; }
.quality-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.quality-grid article { min-height: 270px; padding: 28px; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.quality-grid article > span { display: block; margin-bottom: 76px; color: var(--signal-dark); font-family: Georgia, serif; font-style: italic; }
.quality-grid p { color: #646b62; font-size: .9rem; }
.standards-band { padding: 100px 0; background: var(--coal-2); }
.standards-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 34px 0; }
.standards-list span { padding: 14px 16px; border: 1px solid #596159; color: #d6dbd3; font-size: .75rem; font-weight: 900; letter-spacing: .07em; text-transform: uppercase; }

.sector-index { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.sector-index span { padding: 16px 8px; border-bottom: 1px solid var(--line); color: #b2b9af; font-size: .75rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.industry-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.industry-grid article { min-height: 300px; padding: 34px; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.industry-grid article > span { color: var(--signal-dark); font-family: Georgia, serif; font-style: italic; }
.industry-grid h3 { margin-top: 70px; font-size: 1.55rem; }
.industry-grid p { color: #656c63; }
.industry-grid strong { color: #3e453e; font-size: .7rem; letter-spacing: .07em; text-transform: uppercase; }
.decision-band ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.decision-band li { display: grid; grid-template-columns: 48px 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); font-size: 1.08rem; font-weight: 700; }
.decision-band li span { color: var(--signal); font-family: Georgia, serif; font-style: italic; }

.company-story { display: grid; grid-template-columns: .85fr 1.15fr; gap: 90px; }
.company-story > div:last-child p { color: #60675e; }
.company-story .lead-copy { color: var(--ink) !important; font-size: 1.35rem; line-height: 1.45; letter-spacing: -.02em; }
.plant-feature { display: grid; grid-template-columns: 1.05fr .95fr; min-height: 680px; background: var(--signal); color: var(--ink); }
.plant-feature__image { min-height: 520px; overflow: hidden; }
.plant-feature__image img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.78) contrast(1.03); }
.plant-feature__copy { display: flex; flex-direction: column; justify-content: center; padding: 70px clamp(30px, 6vw, 90px); }
.company-facts { margin-top: 40px; border-top: 1px solid rgba(0,0,0,.25); }
.company-facts div { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid rgba(0,0,0,.25); }
.company-facts strong { font-family: Georgia, serif; font-style: italic; }
.company-facts span { font-weight: 850; }
.values-band { padding: 100px 0; background: var(--coal-2); }
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 44px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.values-grid article { min-height: 220px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.values-grid p { color: #8e968c; }

.page-cta { padding: 110px 0; background: var(--paper); color: var(--ink); }
.page-cta--dark { background: var(--coal); color: var(--paper); }
.page-cta h2 { max-width: 930px; margin: 20px 0 42px; }
.page-cta .hero__cta { max-width: 360px; }
.page-cta--dark .hero__cta { color: var(--ink); }

.contact-hero { min-height: 720px; display: flex; align-items: flex-end; padding: 170px 0 76px; border-bottom: 1px solid var(--line); }
.contact-hero .micro { margin-bottom: 58px; }
.contact-hero__meta { max-width: 760px; display: grid; grid-template-columns: 1fr 1fr; gap: 50px; color: #9da59a; }
.contact-hero__meta a { color: var(--signal); font-weight: 900; }
.brief--page { padding-top: 110px; }
.response-note { display: grid; gap: 8px; margin-top: 42px; padding: 24px; border: 1px solid #a6aca3; }
.response-note strong { margin-bottom: 8px; font-size: .72rem; letter-spacing: .09em; text-transform: uppercase; }
.response-note span { font-size: .85rem; }
.response-note span::before { content: "+"; margin-right: 10px; color: var(--signal-dark); font-weight: 900; }
.contact-route { padding: 110px 0; background: var(--coal-2); }
.contact-route__grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; }
.contact-route ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.contact-route li { display: grid; grid-template-columns: 52px 1fr; gap: 22px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.contact-route li > span { color: var(--signal); font-family: Georgia, serif; font-style: italic; }
.contact-route strong { font-size: 1.12rem; }
.contact-route p { margin: 5px 0 0; color: #8f978d; }

.site-footer { margin-left: var(--rail); background: #060706; color: #858d83; }
.footer-top { width: min(var(--page), calc(100% - 80px)); margin-inline: auto; display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 60px; padding: 80px 0 64px; }
.footer-brand { display: flex; align-items: center; gap: 13px; }
.footer-brand img { width: 48px; height: 48px; display: block; }
.footer-brand .micro { margin: 0; }
.footer-top h2 { max-width: 860px; margin: 12px 0 0; color: var(--paper); }
.footer-contact { display: grid; gap: 8px; text-align: right; font-size: .82rem; }
.footer-contact a { color: var(--signal); font-weight: 900; }
.footer-directory { width: min(var(--page), calc(100% - 80px)); margin-inline: auto; padding: 20px 0 34px; }
.footer-directory nav { display: flex; flex-wrap: wrap; gap: 12px 24px; color: #c7cdc4; font-size: .7rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.footer-directory a:hover { color: var(--signal); }
.footer-bottom { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); font-size: .7rem; letter-spacing: .05em; text-transform: uppercase; }
.footer-bottom__inner { width: min(var(--page), calc(100% - 80px)); margin-inline: auto; display: flex; justify-content: space-between; gap: 20px; }

@media (max-width: 1120px) {
  :root { --rail: 70px; }
  .site-header__inner, .wrap, .footer-top, .footer-directory, .footer-bottom__inner { width: min(var(--page), calc(100% - 48px)); }
  .site-header__inner { grid-template-columns: minmax(350px, 1fr) auto; }
  .main-nav { gap: 13px; font-size: .67rem; }
  .header-action { display: none; }
  .nav-contact { display: block; }
  .hero { min-height: 750px; }
  .hero__copy { padding-left: 4vw; }
  .hero__under { grid-template-columns: 1fr; }
  .method__steps { grid-template-columns: repeat(2, 1fr); }
  .stage:nth-child(3) { border-left: 1px solid var(--line); }
  .evidence__grid, .brief__layout { gap: 46px; }
  .inner-hero__copy { padding-left: 4vw; }
  .inner-hero__copy h1 { font-size: clamp(3.4rem, 7vw, 6.4rem); }
  .process-flow { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  :root { --rail: 0px; }
  .side-rail { display: none; }
  .page-shell, .site-footer { margin-left: 0; }
  .site-header { position: absolute; left: 0; }
  .site-header__inner { grid-template-columns: minmax(0, 1fr) auto; min-height: 88px; gap: 10px; }
  .header-action { display: none; }
  .nav-toggle { display: grid; place-items: center; justify-self: end; }
  .main-nav { position: fixed; inset: 88px 0 auto 0; display: none; padding: 18px 24px 28px; background: rgba(10,12,11,.98); border-bottom: 1px solid var(--line); }
  .nav-open .main-nav { display: grid; gap: 0; }
  .main-nav a { padding: 16px 0; border-bottom: 1px solid var(--line); }
  .main-nav a::before { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero__copy { min-height: 690px; padding: 128px 24px 56px; }
  .hero__visual { min-height: 530px; }
  .hero__eyebrow { margin-bottom: 48px; }
  .hero h1 { font-size: clamp(4.7rem, 19vw, 8rem); }
  .matrix__head, .method__heading, .evidence__grid, .brief__layout { grid-template-columns: 1fr; gap: 30px; }
  .matrix__body { grid-template-columns: 1fr; }
  .matrix__nav { display: grid; grid-template-columns: 1fr 1fr; border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .matrix-tab { min-height: 74px; border-right: 1px solid var(--line-dark); }
  .matrix__result { grid-template-columns: 1fr; }
  .material-layer { width: 280px; }
  .capability__grid { grid-template-columns: 1fr; }
  .capability__image { min-height: 500px; }
  .evidence__intro { position: static; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-contact { text-align: left; }
  .wordmark { gap: 10px; }
  .wordmark__logo { width: 46px; height: 46px; flex-basis: 46px; }
  .wordmark__text > strong { font-size: .92rem; }
  .wordmark__legal { font-size: .42rem; letter-spacing: .035em; }
  .wordmark__legal span:last-child { font-size: .53rem; letter-spacing: .08em; }
  .inner-hero, .inner-hero--text { grid-template-columns: 1fr; }
  .inner-hero__copy { min-height: 650px; padding: 142px 24px 64px; }
  .inner-hero__copy .micro { margin-bottom: 44px; }
  .inner-hero__media { min-height: 520px; }
  .quality-hero-card, .sector-index { margin: 0 24px 70px; }
  .page-lead, .spec-band__grid, .decision-band__grid, .interface-story__grid, .company-story, .contact-route__grid { grid-template-columns: 1fr; gap: 34px; }
  .process-flow, .quality-grid { grid-template-columns: repeat(2, 1fr); }
  .plant-feature { grid-template-columns: 1fr; }
  .plant-feature__image { min-height: 500px; }
  .footer-directory { grid-template-columns: 1fr; gap: 20px; }
  .footer-directory p { text-align: left; }
}

@media (max-width: 560px) {
  .wrap, .site-header__inner, .footer-top, .footer-directory, .footer-bottom__inner { width: calc(100% - 32px); }
  h2 { font-size: 2.75rem; }
  .hero__copy { min-height: 650px; }
  .hero h1 { font-size: clamp(4.2rem, 22vw, 6rem); }
  .hero__under { gap: 24px; }
  .hero__visual { min-height: 480px; }
  .hero__stamp { top: 52px; right: 18px; width: 140px; height: 140px; }
  .hero-stat { min-height: 92px; padding: 17px 13px; }
  .hero-stat strong { font-size: 1.2rem; }
  .matrix, .method, .evidence, .brief { padding: 78px 0; }
  .matrix__head { margin-bottom: 42px; }
  .matrix__nav { grid-template-columns: 1fr; }
  .matrix-tab { border-right: 0; }
  .matrix__result { padding: 38px 18px; }
  .material-layer { width: 230px; }
  .method__steps { grid-template-columns: 1fr; }
  .stage, .stage:nth-child(3) { min-height: 270px; border-left: 1px solid var(--line); }
  .stage::before { margin-bottom: 58px; }
  .capability__copy { padding: 64px 22px; }
  .capacity strong { font-size: 1.25rem; }
  .evidence summary { grid-template-columns: 34px minmax(0, 1fr) 26px; gap: 12px; }
  .evidence summary i { width: 26px; height: 26px; }
  .evidence__answer { padding: 0 20px 28px 42px; }
  .brief-builder { padding: 22px 16px; }
  .choice-grid, .builder-fields { grid-template-columns: 1fr; }
  .builder-field--full { grid-column: auto; }
  .footer-top { padding-top: 64px; }
  .wordmark { gap: 8px; }
  .wordmark__logo { width: 42px; height: 42px; flex-basis: 42px; }
  .wordmark__legal { font-size: .36rem; letter-spacing: .01em; }
  .wordmark__legal span:last-child { font-size: .49rem; }
  .footer-bottom__inner { padding: 18px 0; flex-direction: column; }
  .inner-hero__copy { min-height: 590px; padding-inline: 16px; }
  .inner-hero__copy h1, .contact-hero h1 { font-size: clamp(3.2rem, 15vw, 5rem); }
  .inner-hero__media { min-height: 420px; }
  .quality-hero-card, .sector-index { margin-inline: 16px; }
  .page-lead { margin-bottom: 46px; }
  .product-row { grid-template-columns: 36px 1fr; }
  .product-row ul { grid-column: 2; }
  .process-flow, .quality-grid, .industry-grid, .values-grid { grid-template-columns: 1fr; }
  .process-flow article, .quality-grid article { min-height: 230px; }
  .process-flow span, .quality-grid article > span { margin-bottom: 48px; }
  .interface-diagram { min-height: 340px; padding: 26px; }
  .spec-stack div { grid-template-columns: 1fr; gap: 7px; }
  .plant-feature__image { min-height: 380px; }
  .page-cta, .inner-section, .spec-band, .decision-band, .standards-band, .values-band, .contact-route { padding: 76px 0; }
  .contact-hero { min-height: 650px; padding-bottom: 60px; }
  .contact-hero__meta { grid-template-columns: 1fr; gap: 8px; }
  .sector-index { grid-template-columns: 1fr; }
  .wordmark__text > strong { font-size: .82rem; }
  .wordmark__legal { font-size: .42rem; line-height: 1.12; letter-spacing: .015em; white-space: normal; }
  .wordmark__legal span:first-child { max-width: 205px; }
  .wordmark__legal span:last-child { font-size: .52rem; letter-spacing: .045em; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}