:root {
  --ink: #22333d;
  --muted: #40515a;
  --line: #d5dde1;
  --paper: #f2f5f6;
  --white: #ffffff;
  --blue: #0068a8;
  --blue-deep: #07476f;
  --cyan: #63b6d4;
  --navy: #edf2f4;
  --steel: #e3e9ec;
  --safety: #35b5d7;
  --green: #3b8d77;
  --shadow: 0 20px 56px rgba(43, 64, 75, 0.09);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Arial Nova", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.lang-zh { font-family: "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; }
.lang-zh h1, .lang-zh h2, .lang-zh h3 { letter-spacing: -0.018em; }
.lang-zh h1 { line-height: 1.14; }
.lang-zh .hero-lede, .lang-zh .section-head p { line-height: 1.8; }
.lang-zh .text-link::after { content: "  →"; }

a { color: inherit; text-decoration: none; }
a:hover { color: var(--blue); }
img, svg { display: block; max-width: 100%; }

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(20, 27, 32, 0.13);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 13px; flex: 0 0 auto; }
.brand-logo { width: 34px; height: 40px; object-fit: contain; flex: 0 0 auto; }
.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: linear-gradient(145deg, var(--blue), var(--cyan));
  font-weight: 800;
  letter-spacing: -0.08em;
}
.brand-copy { display: grid; line-height: 1.08; }
.brand-copy strong { letter-spacing: 0.13em; font-size: 0.98rem; }
.brand-copy span { margin-top: 5px; color: var(--muted); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; }

.nav-links { display: flex; align-items: center; gap: 24px; color: #394850; font-size: 0.75rem; font-weight: 700; letter-spacing: .045em; text-transform: uppercase; }
.nav-cta {
  padding: 10px 16px;
  border: 1px solid var(--blue);
  color: var(--blue);
  white-space: nowrap;
}
.nav-cta:hover { color: var(--white); background: var(--blue); }
.language-switch { display: flex; align-items: center; gap: 7px; flex: 0 0 auto; color: #6f7c82; font-size: .7rem; font-weight: 750; letter-spacing: .06em; }
.language-switch a { color: #5f7078; }
.language-switch a.active, .language-switch a:hover { color: var(--blue); }

.hero { position: relative; min-height: 700px; overflow: hidden; color: var(--ink); background: #dceff6; }
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(249,253,254,.98) 0%, rgba(245,251,253,.95) 29%, rgba(235,247,251,.72) 52%, rgba(230,246,251,.08) 78%),
    linear-gradient(0deg, rgba(8,102,153,.15), transparent 36%);
  pointer-events: none;
}
.hero-media { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: 68% center; filter: brightness(.98) saturate(.9) contrast(1.02); animation: hero-breathe 16s ease-in-out infinite alternate; }
.hero-overlay { position: relative; z-index: 2; min-height: 700px; display: flex; align-items: center; }
.hero-copy { width: min(660px, 63%); display: flex; flex-direction: column; justify-content: center; padding: 76px 0 70px; }
.hero-kicker { display: flex; justify-content: space-between; gap: 28px; margin-bottom: 76px; padding-bottom: 15px; border-bottom: 1px solid rgba(67,99,113,.42); color: #3f5966; font-family: "Times New Roman", "Songti SC", "STSong", serif; font-size: .86rem; font-weight: 400; letter-spacing: .12em; text-transform: uppercase; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  width: max-content;
  max-width: 100%;
  gap: 0;
  padding: 5px 9px 4px;
  border: 1px solid rgba(0, 104, 168, .42);
  border-radius: 6px;
  color: var(--blue-deep);
  background: rgba(255, 255, 255, .38);
  font-family: "Times New Roman", "Songti SC", "STSong", serif;
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.075em;
  line-height: 1.05;
  text-transform: uppercase;
}
.eyebrow::before { display: none; }
.hero .eyebrow, .dark .eyebrow, .factory-video .eyebrow { color: var(--blue-deep); }

h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: -0.028em; }
h1 { max-width: 760px; margin-top: 30px; font-size: clamp(3rem, 5vw, 4.85rem); font-weight: 650; }
h2 { font-size: clamp(2rem, 3.7vw, 3.2rem); font-weight: 650; }
h3 { font-size: 1.25rem; }
.eyebrow + h1, .eyebrow + h2, .eyebrow + h3 { margin-top: 30px; }

@keyframes hero-breathe {
  from { transform: scale(1); }
  to { transform: scale(1.018); }
}

.hero h1 span { color: #148dc2; }
.hero-lede { max-width: 650px; margin: 26px 0 0; color: var(--muted); font-size: 1.08rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--blue);
  background: var(--blue);
  color: var(--white);
  font-weight: 750;
  font-size: 0.91rem;
}
.button:hover { background: var(--blue-deep); border-color: var(--blue-deep); color: var(--white); }
.button.secondary { background: var(--white); color: var(--blue-deep); border-color: #9bbac9; }
.button.secondary:hover { background: #edf7fb; color: var(--blue); }

.hero-grade-line { display: flex; flex-wrap: wrap; gap: 12px 28px; margin: 44px 0 0; padding-top: 17px; border-top: 1px solid rgba(85,134,156,.33); color: #365b6d; font-size: .68rem; font-weight: 750; letter-spacing: .105em; text-transform: uppercase; }

.pellet-stage {
  position: relative;
  min-height: 430px;
  display: grid;
  place-items: center;
}

.hero-photo {
  position: relative;
  min-height: 670px;
  margin: 0;
  overflow: hidden;
  background: #d9f0f8;
  box-shadow: none;
}
.hero-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.12), transparent 42%, rgba(5,105,157,.05)); pointer-events: none; }
.hero-photo img { width: 100%; height: 670px; object-fit: cover; object-position: 58% center; filter: brightness(.94) saturate(.9) contrast(1.03); }
.hero-photo figcaption { position: absolute; right: 0; bottom: 0; z-index: 2; min-width: 190px; padding: 16px 19px; border-left: 3px solid var(--safety); color: var(--ink); background: rgba(255,255,255,.92); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; }
.hero-photo figcaption strong { display: block; color: var(--blue-deep); font-size: .95rem; }

.pellet-core {
  width: min(380px, 82vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 36% 30%, rgba(255,255,255,0.95), rgba(199,236,243,0.74) 20%, rgba(56,142,177,0.28) 58%, rgba(13,71,105,0.18) 75%, transparent 76%);
  box-shadow: inset -30px -28px 70px rgba(18,104,165,0.12), 0 46px 90px rgba(9,29,45,0.15);
}

.pellet {
  position: absolute;
  width: 54px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.86);
  background: linear-gradient(145deg, rgba(255,255,255,0.95), rgba(178,226,237,0.52));
  box-shadow: inset -7px -5px 12px rgba(18,104,165,0.12), 0 9px 18px rgba(9,29,45,0.11);
  transform: rotate(var(--r));
}
.p1 { top: 17%; left: 12%; --r: 24deg; }
.p2 { top: 6%; right: 18%; --r: -18deg; }
.p3 { top: 38%; right: 1%; --r: 12deg; }
.p4 { bottom: 17%; right: 14%; --r: -34deg; }
.p5 { bottom: 7%; left: 30%; --r: 16deg; }
.p6 { top: 49%; left: 0; --r: -10deg; }
.p7 { top: 29%; left: 35%; --r: 39deg; }
.p8 { bottom: 28%; left: 29%; --r: -21deg; }

.stage-label {
  position: absolute;
  right: 4%;
  bottom: 12%;
  padding: 14px 17px;
  border-left: 3px solid var(--cyan);
  background: rgba(255,255,255,0.88);
  box-shadow: var(--shadow);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.stage-label strong { display: block; color: var(--blue-deep); font-size: 0.95rem; }

.signal-bar { border-top: 1px solid #dbeaf0; border-bottom: 1px solid var(--line); background: #edf7fb; color: var(--ink); }
.signals { display: grid; grid-template-columns: repeat(4, 1fr); }
.signal { min-height: 108px; padding: 26px; border-right: 1px solid #cfd4d4; }
.signal:last-child { border: 0; }
.signal strong { display: block; font-size: 1.15rem; }
.signal span { display: block; margin-top: 6px; color: var(--muted); font-size: 0.81rem; }

.section { padding: 112px 0; scroll-margin-top: 72px; }
.section.tint { background: var(--paper); }
.section.dark { color: var(--ink); background: #eaf5fa; }
.section-head { display: grid; grid-template-columns: 0.75fr 1.25fr; gap: 64px; align-items: end; margin-bottom: 48px; }
.section-head p { max-width: 670px; margin: 0; color: var(--muted); font-size: 1rem; }
.dark .section-head p { color: var(--muted); }

.grade-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grade-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  padding: 30px;
  border: 1px solid var(--line);
  background: linear-gradient(138deg, #ffffff 0%, #f4f9fb 48%, #e1eef3 100%);
  box-shadow: 0 0 0 rgba(0,0,0,0);
  transition: border-color .28s ease, transform .28s ease, box-shadow .28s ease;
}
.grade-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(112deg, transparent 52%, rgba(38, 158, 204, .1));
}
.grade-card:nth-child(2) { background: linear-gradient(138deg, #ffffff 0%, #edf8fb 48%, #d3edf7 100%); }
.grade-card:nth-child(3) { background: linear-gradient(138deg, #ffffff 0%, #f1f6f8 46%, #d8e7ed 100%); }
.grade-card:hover { border-color: #7f9eab; transform: translateY(-4px); box-shadow: 0 18px 38px rgba(50, 83, 98, .1); }
.grade-top { display: flex; align-items: start; justify-content: space-between; gap: 16px; }
.grade-id { color: var(--blue); font-size: 3rem; font-weight: 780; line-height: 1; }
.grade-process { padding: 5px 9px; background: #e8f3f6; color: var(--blue-deep); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.grade-card h3 { margin-top: 28px; font-size: 1.35rem; }
.grade-card > p { color: var(--muted); font-size: 0.97rem; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 22px 0 28px; }
.stat { padding-top: 12px; border-top: 1px solid var(--line); }
.stat strong { display: block; font-size: 1.03rem; }
.stat span { color: var(--muted); font-size: 0.76rem; }
.text-link { margin-top: auto; color: var(--blue); font-weight: 800; font-size: 0.9rem; }
.text-link::after { content: "  →"; display: inline-block; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.grade-note { margin: 18px 0 0; color: var(--muted); font-size: .84rem; }

.selector-block { margin-top: 46px; padding-top: 34px; border-top: 1px solid var(--line); }
.selector-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 20px; }
.selector-head p, .table-note { color: var(--muted); font-size: .84rem; }
.selector-head p { max-width: 430px; margin: 0; text-align: right; }
.selector-table table { min-width: 980px; }
.selector-table td:first-child { color: var(--blue); font-size: 1rem; }
.selector-table th small { font-size: .62rem; font-weight: 650; letter-spacing: 0; text-transform: none; }
.table-note { margin: 14px 0 0; }

.application-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.application-card { position: relative; min-height: 330px; display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; padding: 38px; border: 1px solid #cbd5da; color: var(--ink); background: linear-gradient(132deg, #f8fafb 0%, #e9eef1 68%, #dce5e9 100%); transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease, background .3s ease; }
.application-card::before { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, transparent 54%, rgba(55,147,187,.1)); transform-origin: right center; transition: transform .55s ease, opacity .3s ease; }
.application-card::after { content: ""; position: absolute; left: 38px; right: 38px; top: 36px; height: 1px; background: linear-gradient(90deg, #20a0d2 0 42px, rgba(94,112,122,.24) 42px 100%); }
.application-card > * { position: relative; z-index: 2; }
.application-card span { color: #59717e; font-size: .7rem; font-weight: 800; letter-spacing: .12em; }
.application-card h3 { margin-top: 16px; font-size: clamp(1.8rem, 3vw, 2.7rem); }
.application-card p { max-width: 520px; color: var(--muted); }
.application-card strong { margin-top: 22px; font-size: .82rem; }
.application-card:hover { color: var(--ink); border-color: #839faa; background: linear-gradient(132deg, #ffffff 0%, #edf2f4 68%, #dce9ee 100%); transform: translateY(-4px); box-shadow: 0 18px 40px rgba(45, 78, 92, .1); }
.application-card:hover::before { transform: scale(1.06); opacity: .86; }
.application-card.injection { background: linear-gradient(132deg, #f8fafb 0%, #edf1f3 55%, #d9e8ee 100%); }

.process-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 70px; align-items: center; }
.process-visual {
  min-height: 490px;
  position: relative;
  overflow: hidden;
  margin: 0;
  background: var(--steel);
}
.factory-feature img { width: 100%; height: 490px; object-fit: cover; filter: brightness(.95) saturate(.9) contrast(1.03); transition: transform .7s ease; }
.factory-feature:hover img { transform: scale(1.018); }
.factory-feature::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 52%, rgba(8,75,109,.48)); pointer-events: none; }
.factory-feature figcaption { position: absolute; z-index: 2; left: 28px; bottom: 26px; padding-left: 15px; border-left: 3px solid var(--safety); color: var(--white); }
.factory-feature figcaption span { display: block; font-size: 1.4rem; font-weight: 700; }
.factory-feature figcaption small { color: #d8e0e4; }

.feature-list { margin: 34px 0 0; padding: 0; list-style: none; }
.feature-list li { display: grid; grid-template-columns: 34px 1fr; gap: 12px; padding: 16px 0; border-bottom: 1px solid rgba(220,229,234,0.9); }
.feature-list b { color: var(--blue); }
.feature-list p { margin: 2px 0 0; color: var(--muted); font-size: 0.9rem; }

.production-flow {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-top: 54px;
  border: 1px solid var(--line);
  background: var(--white);
}
.production-flow div { position: relative; min-height: 142px; padding: 22px; border-right: 1px solid var(--line); transition: background-color .24s ease; }
.production-flow div:hover { background: #f2f8fa; }
.production-flow div:last-child { border-right: 0; }
.production-flow div:not(:last-child)::after { content: "→"; position: absolute; right: -10px; top: 24px; z-index: 2; color: var(--blue); background: var(--white); font-weight: 800; }
.production-flow span { display: block; color: var(--blue); font-size: .7rem; font-weight: 800; letter-spacing: .1em; }
.production-flow strong { display: block; margin-top: 20px; }
.production-flow small { display: block; margin-top: 6px; color: var(--muted); }

.factory-media { grid-column: 1 / -1; margin-top: 72px; padding-top: 60px; border-top: 1px solid var(--line); scroll-margin-top: 72px; }
.factory-media-head { display: grid; grid-template-columns: .82fr 1.18fr; gap: 18px 64px; align-items: end; margin-bottom: 32px; }
.factory-media-head .eyebrow { grid-column: 1 / -1; grid-row: auto; align-self: start; margin-bottom: 4px; }
.factory-media-head h3 { grid-column: 1; max-width: 470px; margin-top: 0; font-size: clamp(1.7rem, 3vw, 2.5rem); }
.factory-media-head p { grid-column: 2; max-width: 650px; margin: 0; color: var(--muted); }
.evidence-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.evidence-card { position: relative; min-height: 320px; margin: 0; overflow: hidden; background: var(--steel); scroll-margin-top: 72px; }
.evidence-card-wide { grid-column: 1 / -1; min-height: 390px; }
.evidence-card-entrance { min-height: 520px; }
.evidence-card-entrance img { object-position: center bottom; }
.evidence-card img { width: 100%; height: 100%; position: absolute; inset: 0; object-fit: cover; filter: brightness(.94) saturate(.9) contrast(1.03); transition: transform .65s ease, filter .65s ease; }
.evidence-card:hover img { transform: scale(1.025); filter: brightness(.97) saturate(.92) contrast(1.03); }
.evidence-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(7,76,110,.52)); }
.evidence-card figcaption { position: absolute; z-index: 2; left: 24px; right: 24px; bottom: 22px; color: var(--white); }
.evidence-card figcaption span { display: block; margin-bottom: 5px; color: #d8f2fb; font-size: .66rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.evidence-card figcaption strong { font-size: 1.05rem; }
.evidence-card-entrance figcaption { left: auto; max-width: 340px; }
.factory-video { display: grid; grid-template-columns: .62fr 1.38fr; gap: 0; margin-top: 12px; color: var(--ink); border: 1px solid #d1e5ed; background: #edf8fc; scroll-margin-top: 72px; }
.factory-video-copy { display: flex; flex-direction: column; justify-content: center; padding: 44px; }
.factory-video-copy h3 { margin-top: 24px; font-size: clamp(1.8rem, 3vw, 2.8rem); }
.factory-video-copy p { color: var(--muted); }
.factory-video-copy small { margin-top: 22px; color: #748b98; font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; }
.factory-video video { width: 100%; height: 100%; min-height: 400px; object-fit: cover; background: #d9edf5; }

.doc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.doc-card { padding: 24px; border: 1px solid #cbdfe8; background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(228,242,247,.88)); transition: transform .26s ease, border-color .26s ease, box-shadow .26s ease; }
.doc-card:nth-child(2) { background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(210,237,247,.9)); }
.doc-card:nth-child(3) { background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(223,233,238,.92)); }
.doc-card:nth-child(4) { background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(232,240,243,.92)); }
.doc-card span { display: block; color: var(--blue); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.doc-card strong { display: block; margin-top: 28px; font-size: 1rem; }
.doc-card p { margin: 8px 0 0; color: var(--muted); font-size: 0.86rem; }
.doc-card:hover { transform: translateY(-3px); border-color: #91b4c2; box-shadow: 0 15px 30px rgba(45, 78, 92, .08); }

.brief-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.brief-card { min-height: 190px; padding: 25px; border: 1px solid var(--line); background: linear-gradient(135deg, #ffffff, #eaf4f7); transition: transform .26s ease, border-color .26s ease, box-shadow .26s ease; }
.brief-card:nth-child(2) { background: linear-gradient(135deg, #ffffff, #dff1f7); }
.brief-card:nth-child(3) { background: linear-gradient(135deg, #ffffff, #e2ebef); }
.brief-card:nth-child(4) { background: linear-gradient(135deg, #ffffff, #edf3f5); }
.brief-card b { display: block; color: var(--blue); font-size: .72rem; letter-spacing: .1em; }
.brief-card strong { display: block; margin-top: 28px; }
.brief-card p { margin: 9px 0 0; color: var(--muted); font-size: .9rem; }
.brief-card:hover { transform: translateY(-3px); border-color: #91aeb9; box-shadow: 0 15px 30px rgba(45, 78, 92, .08); }

.faq { width: 100%; max-width: none; margin: 0; }
.faq details { border-top: 1px solid var(--line); transition: background-color .2s ease; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq details:hover { background: rgba(234, 245, 250, .44); }
.faq summary { cursor: pointer; list-style: none; padding: 24px 56px 24px 18px; font-size: 1.02rem; font-weight: 750; position: relative; }
.faq summary::after { content: "+"; position: absolute; right: 4px; color: var(--blue); font-size: 1.4rem; }
.faq details[open] summary::after { content: "–"; }
.faq details p { max-width: 900px; margin: 0; padding: 0 56px 26px 18px; color: var(--muted); }

.cta-band { padding: 66px 0; background: linear-gradient(112deg, #087ab8, #49b8d8); color: var(--white); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.cta-inner h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
.cta-inner p { margin: 10px 0 0; color: #c9e3ec; }
.cta-band .button { background: var(--white); color: var(--blue-deep); border-color: var(--white); }

.site-footer { padding: 42px 0 34px; color: #50616a; border-top: 1px solid #ccd7dc; background: linear-gradient(145deg, #eef2f4, #dfe7ea); }
.site-footer .brand-copy strong { color: var(--ink); }
.site-footer .brand-copy span { color: #718087; }
.site-footer a:hover { color: var(--blue); }
.social-follow { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin-bottom: 40px; padding-bottom: 25px; border-bottom: 1px solid rgba(65,84,94,.2); }
.social-follow > span { color: var(--ink); font-size: .7rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.social-links { display: flex; flex-wrap: wrap; gap: 28px; }
.social-links a { padding-bottom: 3px; border-bottom: 1px solid rgba(54,76,87,.28); color: #344a55; font-size: .8rem; font-weight: 700; }
.social-links a span { margin-left: 4px; color: var(--blue); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.6fr 0.8fr; gap: 50px; }
.footer-grid h3 { color: var(--ink); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; }
.footer-grid p, .footer-grid a { color: #596a72; font-size: 0.8rem; }
.footer-links { display: grid; gap: 9px; margin-top: 15px; }
.legal { display: flex; justify-content: space-between; gap: 20px; margin-top: 38px; padding-top: 22px; border-top: 1px solid rgba(65,84,94,.16); font-size: 0.72rem; }

/* Grade pages */
.product-hero { padding: 92px 0 74px; border-bottom: 1px solid var(--line); background: var(--paper); }
.product-hero-grid { display: grid; grid-template-columns: 1fr 0.72fr; gap: 72px; align-items: center; }
.product-code { color: var(--blue); font-size: clamp(5rem, 13vw, 10rem); font-weight: 800; line-height: .8; letter-spacing: -.08em; }
.product-hero h1 { max-width: 800px; margin-top: 30px; font-size: clamp(2.6rem, 5vw, 4.8rem); }
.product-hero p { max-width: 650px; color: var(--muted); }
.property-panel { padding: 30px; background: var(--white); box-shadow: var(--shadow); }
.property-panel h2 { font-size: 1.1rem; }
.property-row { display: grid; grid-template-columns: 1fr auto; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: .93rem; }
.property-row:last-child { border: 0; }
.property-row span { color: var(--muted); }
.property-row strong { text-align: right; }
.property-section { background: #f7fafb; }
.property-groups { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.property-groups article { min-height: 330px; padding: 26px; border: 1px solid var(--line); background: linear-gradient(138deg, #ffffff, #eaf4f7); transition: transform .26s ease, border-color .26s ease, box-shadow .26s ease; }
.property-groups article:nth-child(2) { background: linear-gradient(138deg, #ffffff, #dff1f7); }
.property-groups article:nth-child(3) { background: linear-gradient(138deg, #ffffff, #e1eaee); }
.property-groups article:nth-child(4) { background: linear-gradient(138deg, #ffffff, #edf2f4); }
.property-groups article > span { color: var(--blue); font-size: .7rem; font-weight: 800; letter-spacing: .12em; }
.property-groups h3 { margin-top: 24px; }
.property-groups dl { margin: 26px 0 0; }
.property-groups dl div { padding: 13px 0; border-top: 1px solid var(--line); }
.property-groups dt { color: var(--muted); font-size: .79rem; }
.property-groups dd { margin: 4px 0 0; color: var(--ink); font-size: .96rem; font-weight: 750; }
.property-groups article:hover { transform: translateY(-3px); border-color: #91aeb9; box-shadow: 0 15px 30px rgba(45, 78, 92, .08); }
.use-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.use-card { min-height: 180px; padding: 25px; border: 1px solid var(--line); background: linear-gradient(135deg, #ffffff, #e9f3f7); transition: transform .26s ease, border-color .26s ease, box-shadow .26s ease; }
.use-card:nth-child(2) { background: linear-gradient(135deg, #ffffff, #daeff7); }
.use-card:nth-child(3) { background: linear-gradient(135deg, #ffffff, #e0e9ed); }
.use-card b { display: none; }
.use-card h3 { margin-top: 20px; }
.use-card p { color: var(--muted); font-size: .92rem; }
.use-card:hover { transform: translateY(-3px); border-color: #91aeb9; box-shadow: 0 15px 30px rgba(45, 78, 92, .08); }
.comparison { overflow-x: auto; }
.comparison table { width: 100%; min-width: 720px; border-collapse: collapse; background: var(--white); }
.comparison th, .comparison td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; }
.comparison th { color: var(--muted); background: #eef4f6; font-size: .76rem; letter-spacing: .05em; text-transform: uppercase; }
.comparison td { font-size: .93rem; }
.comparison tr.current td { background: #eef8fa; font-weight: 700; }
.breadcrumb { padding: 18px 0; color: var(--muted); font-size: .76rem; }
.breadcrumb a { color: var(--blue); }

/* Application pages */
.application-hero { overflow: hidden; border-bottom: 1px solid var(--line); background: var(--paper); }
.application-hero-grid { min-height: 610px; display: grid; grid-template-columns: 1fr .86fr; gap: 70px; align-items: center; padding: 70px 0; }
.application-hero h1 { margin-top: 30px; font-size: clamp(2.8rem, 5.4vw, 5.3rem); }
.application-hero p { max-width: 650px; color: var(--muted); font-size: 1.05rem; }
.application-hero figure { height: 470px; margin: 0; overflow: hidden; box-shadow: var(--shadow); }
.application-hero figure img { width: 100%; height: 100%; object-fit: cover; object-position: 62% center; filter: brightness(.94) saturate(.9) contrast(1.03); transition: transform .7s ease, filter .7s ease; }
.application-hero figure:hover img { transform: scale(1.022); filter: brightness(.97) saturate(.92) contrast(1.03); }

@media (max-width: 900px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .product-hero-grid, .process-grid, .section-head, .application-hero-grid { grid-template-columns: 1fr; gap: 38px; }
  .application-hero-grid { padding: 58px 0; }
  .hero, .hero-overlay { min-height: 650px; }
  .hero::after { background: linear-gradient(90deg, rgba(249,253,254,.97) 0%, rgba(244,251,253,.92) 48%, rgba(231,247,252,.43) 82%), linear-gradient(0deg, rgba(8,102,153,.14), transparent 38%); }
  .hero-media img { object-position: 64% center; }
  .hero-copy { width: min(650px, 76%); padding: 70px 0 58px; }
  .hero-kicker { margin-bottom: 48px; }
  .grade-grid, .use-grid, .application-grid { grid-template-columns: 1fr; }
  .property-groups { grid-template-columns: 1fr 1fr; }
  .signals { grid-template-columns: 1fr 1fr; }
  .signal:nth-child(2) { border-right: 0; }
  .signal:nth-child(-n+2) { border-bottom: 1px solid #cfd4d4; }
  .doc-grid, .brief-grid { grid-template-columns: 1fr 1fr; }
  .production-flow { grid-template-columns: 1fr; }
  .production-flow div { min-height: 110px; border-right: 0; border-bottom: 1px solid var(--line); }
  .production-flow div:last-child { border-bottom: 0; }
  .production-flow div:not(:last-child)::after { content: "↓"; right: 22px; top: auto; bottom: -12px; }
  .factory-media-head { grid-template-columns: 1fr; }
  .factory-media-head .eyebrow, .factory-media-head h3, .factory-media-head p { grid-column: 1; }
  .factory-video { grid-template-columns: 1fr; }
  .factory-video video { min-height: 0; aspect-ratio: 16 / 9; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 26px, 1160px); }
  .brand-copy span { display: none; }
  .nav-links .nav-cta { display: none; }
  .language-switch { margin-left: auto; }
  .hero, .hero-overlay { min-height: 650px; }
  .hero::after { background: linear-gradient(90deg, rgba(249,253,254,.98) 0%, rgba(244,251,253,.93) 70%, rgba(228,246,251,.58) 100%), linear-gradient(0deg, rgba(8,102,153,.12), transparent 40%); }
  .hero-media img { object-position: 62% center; }
  .hero-copy { width: 100%; padding: 52px 0 46px; }
  .hero-kicker { margin-bottom: 40px; }
  h1 { font-size: 2.8rem; }
  .pellet-stage { min-height: 340px; }
  .pellet-core { width: 280px; }
  .signals, .doc-grid, .brief-grid, .footer-grid { grid-template-columns: 1fr; }
  .property-groups { grid-template-columns: 1fr; }
  .selector-head { align-items: flex-start; flex-direction: column; }
  .selector-head p { text-align: left; }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-card-wide { grid-column: auto; min-height: 300px; }
  .evidence-card-entrance { min-height: 360px; }
  .factory-video-copy { padding: 32px 24px; }
  .signal { border-right: 0; border-bottom: 1px solid #cfd4d4; }
  .section { padding: 76px 0; }
  .cta-inner, .legal, .social-follow { align-items: flex-start; flex-direction: column; }
  .footer-grid > :first-child { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}