/* SORA website — giao diện chung cho cả 3 ngôn ngữ */
:root {
  --navy: #0F2A44;
  --navy2: #1C3D5E;
  --orange: #E8742A;
  --orange-dark: #C95E18;
  --ink: #1F2730;
  --grey: #5F6B76;
  --light: #F2F4F6;
  --line: #DDE2E7;
  --white: #fff;
  --radius: 6px;
  --font: "Helvetica Neue", Arial, "Segoe UI", Roboto, sans-serif;
  --font-ja: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", YuGothic, Meiryo, "Noto Sans JP", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--white); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
body.lang-ja { font-family: var(--font), var(--font-ja); }
body.lang-ja, body.lang-ja p { line-height: 1.85; }
img { max-width: 100%; display: block; }
a { color: var(--navy2); }
h1, h2, h3, h4 { color: var(--navy); line-height: 1.3; margin: 0 0 .6em; }
h1 { font-size: clamp(28px, 4.4vw, 46px); font-weight: 700; }
h2 { font-size: clamp(22px, 3vw, 32px); }
h3 { font-size: 19px; }
p { margin: 0 0 1em; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }
.center { text-align: center; margin-left: auto; margin-right: auto; }
.muted { color: #9FB3C8; }
.mt { margin-top: 40px; }
.kicker { color: var(--orange); font-weight: 700; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 10px; }

/* Buttons */
.btn { display: inline-block; background: var(--orange); color: #fff; text-decoration: none; font-weight: 700; padding: 11px 22px; border-radius: var(--radius); border: 2px solid var(--orange); cursor: pointer; font-size: 15px; transition: background .15s; font-family: inherit; }
.btn:hover { background: var(--orange-dark); border-color: var(--orange-dark); }
.btn-sm { padding: 7px 14px; font-size: 14px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-ghost { background: transparent; border-color: rgba(255,255,255,.8); }
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; }

/* Header */
.hdr { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); backdrop-filter: blur(6px); }
.hdr-in { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.logo { text-decoration: none; display: flex; flex-direction: column; align-items: flex-start; line-height: 1.1; }
.logo-mark { font-weight: 800; font-size: 26px; letter-spacing: .28em; color: var(--navy); }
.logo-mark.light { color: #fff; margin-bottom: 10px; }
.logo-img { height: 34px; width: auto; display: block; }
.logo-img.light { height: 32px; margin-bottom: 14px; }
.logo-sub { font-size: 11px; color: var(--grey); margin-top: 6px; letter-spacing: .02em; }
.nav { display: flex; align-items: center; gap: 18px; }
.nav > a:not(.btn) { text-decoration: none; color: var(--ink); font-weight: 600; font-size: 14.5px; padding: 6px 0; border-bottom: 2px solid transparent; }
.nav > a:not(.btn):hover, .nav > a[aria-current] { border-bottom-color: var(--orange); color: var(--navy); }
.lang-sw { display: flex; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.lang-sw a { text-decoration: none; font-size: 12.5px; font-weight: 700; color: var(--grey); padding: 5px 9px; }
.lang-sw a.on { background: var(--navy); color: #fff; }
.menu-btn { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.menu-btn span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; }

/* Hero */
.hero { position: relative; background-size: cover; background-position: center 40%; color: #fff; }
.hero::before, .phero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,28,46,.92) 0%, rgba(10,28,46,.72) 45%, rgba(10,28,46,.25) 100%); }
.hero-in { position: relative; padding: 120px 24px 130px; max-width: 1160px; }
.hero h1 { color: #fff; max-width: 860px; }
body.lang-ja h1, body.lang-ja h2, body.lang-ja h3 { word-break: auto-phrase; }
.hero .lead, .phero .lead { font-size: 18px; max-width: 640px; color: #D9E2EA; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.phero { position: relative; background-size: cover; background-position: center; color: #fff; }
.phero .wrap { position: relative; padding-top: 80px; padding-bottom: 80px; }
.phero h1 { color: #fff; max-width: 820px; }

/* Sections */
.sec { padding: 84px 0; }
.sec.alt { background: var(--light); }
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
figure { margin: 0; }
figure.rounded img { border-radius: var(--radius); }
figcaption { font-size: 13.5px; color: var(--grey); margin-top: 8px; }

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; }
.pillar { background: var(--light); border-top: 4px solid var(--navy); padding: 28px; border-radius: 0 0 var(--radius) var(--radius); }
.pillar .num { color: var(--orange); font-weight: 800; font-size: 26px; display: block; margin-bottom: 6px; }
.pillar p { color: var(--grey); font-size: 15px; margin: 0; }

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 28px; }
.card { background: #fff; border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--ink); box-shadow: 0 1px 2px rgba(15,42,68,.08); border: 1px solid var(--line); display: flex; flex-direction: column; transition: transform .15s, box-shadow .15s; }
.card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(15,42,68,.12); }
.card-img { aspect-ratio: 4/3; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; }
.card-img.white img { object-fit: contain; background: #fff; }
.card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 17px; }
.card-body p { font-size: 14.5px; color: var(--grey); flex: 1; }
.more { color: var(--orange); font-weight: 700; font-size: 14px; }

.steps { list-style: none; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; counter-reset: s; }
.steps li { background: var(--navy); color: #fff; padding: 22px 12px; border-radius: var(--radius); text-align: center; position: relative; }
.steps li:nth-child(even) { background: var(--navy2); }
.steps li.last { background: var(--orange); }
.steps li:not(.last)::after { content: "›"; position: absolute; right: -9px; top: 50%; transform: translateY(-50%); color: var(--orange); font-weight: 800; font-size: 22px; z-index: 1; }
.steps .n { display: block; font-size: 24px; font-weight: 800; color: var(--orange); }
.steps li.last .n { color: #fff; }
.steps .t { font-size: 14px; font-weight: 600; line-height: 1.4; display: block; }

.cta-band { background: var(--navy); color: #fff; border-top: 4px solid var(--orange); }
.cta-in { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding-top: 56px; padding-bottom: 56px; }
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { color: #C9D3DD; margin: 0; }
.cta-band .btn { white-space: nowrap; }

.gallery { display: grid; gap: 22px; }
.gallery.g3 { grid-template-columns: repeat(3, 1fr); }
.gallery.g4 { grid-template-columns: repeat(2, 1fr); }
.gallery img { border-radius: var(--radius); width: 100%; aspect-ratio: 4/3; object-fit: cover; }

.checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; }
.checks li { background: #fff; border-left: 3px solid var(--orange); padding: 12px 16px; font-weight: 600; color: var(--navy); border-radius: 0 var(--radius) var(--radius) 0; }
.checks .n { color: var(--orange); margin-right: 12px; font-weight: 800; }

.parts { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.parts img { margin: 0 auto 18px; }
.parts img.small { max-width: 480px; }

.tbl-wrap { overflow-x: auto; margin-top: 18px; }
.tbl { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; }
.tbl thead th { background: var(--navy); color: #fff; text-align: left; font-size: 13px; letter-spacing: .06em; padding: 12px 18px; }
.tbl tbody th { text-align: left; color: var(--navy); width: 32%; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.tbl td { padding: 14px 18px; border-bottom: 1px solid var(--line); }
.chips { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; margin: 0; }
.chips li { background: #fff; border: 1px solid var(--line); padding: 8px 16px; border-radius: 40px; font-weight: 600; color: var(--navy); font-size: 14.5px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 40px; align-items: start; }
.ccard { background: var(--light); padding: 26px 28px; border-radius: var(--radius); margin-bottom: 18px; }
.ccard.dark { background: var(--navy); color: #fff; }
.ccard.dark h3 { color: #fff; }
.ccard.dark a { color: #fff; }
.ccard h3 { border-bottom: 2px solid var(--orange); padding-bottom: 10px; display: inline-block; }
.ccard dl { margin: 6px 0 0; }
.ccard dt { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--grey); margin-top: 12px; font-weight: 700; }
.ccard.dark dt { color: #9FB3C8; }
.ccard dd { margin: 2px 0 0; font-weight: 600; font-size: 16px; }
.ccard dd small { font-weight: 400; opacity: .8; }
.rfq { margin-top: 26px; }
.rfq .checks { grid-template-columns: 1fr; }
.rfq .checks li { background: var(--light); font-size: 14.5px; padding: 9px 14px; }
.form-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; box-shadow: 0 6px 24px rgba(15,42,68,.06); }
form label { display: block; font-weight: 600; font-size: 14.5px; color: var(--navy); margin-bottom: 16px; }
form label em { font-style: normal; font-size: 11px; background: var(--orange); color: #fff; padding: 1px 6px; border-radius: 3px; margin-left: 6px; vertical-align: 2px; }
form input:not([type=checkbox]), form select, form textarea { display: block; width: 100%; margin-top: 6px; padding: 11px 12px; border: 1px solid #C5CDD5; border-radius: var(--radius); font: inherit; font-weight: 400; color: var(--ink); background: #fff; }
form input:focus, form select:focus, form textarea:focus { outline: 2px solid var(--orange); outline-offset: 0; border-color: var(--orange); }
form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
form .agree { display: flex; gap: 10px; align-items: flex-start; font-weight: 500; font-size: 14px; }
form .agree input { margin-top: 5px; }
.hp { position: absolute; left: -9999px; }
.privacy { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); }
.privacy h4 { font-size: 14px; margin-bottom: 6px; }
.privacy p { font-size: 13px; color: var(--grey); margin: 0; }

.thanks { padding: 120px 0; }
.tick { width: 64px; height: 64px; border-radius: 50%; background: var(--orange); color: #fff; font-size: 32px; line-height: 64px; margin: 0 auto 20px; }

/* Footer */
.ftr { background: #0A1D30; color: #C9D3DD; padding: 56px 0 24px; font-size: 14.5px; }
.ftr-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; }
.ftr h4 { color: #fff; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; margin: 0 0 6px; }
.ftr a { color: #fff; }
.ftr-nav { display: flex; flex-direction: column; gap: 8px; }
.ftr-nav a { text-decoration: none; color: #C9D3DD; }
.ftr-nav a:hover { color: #fff; }
.copy { border-top: 1px solid #1E3650; margin-top: 36px; padding-top: 18px; font-size: 12.5px; color: #7F93A7; }

/* Tablet */
@media (max-width: 1080px) {
  .nav { gap: 14px; }
  .nav > a:not(.btn) { font-size: 13.5px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .steps li::after { display: none; }
}

/* Factory & equipment (home) */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 32px; }
.stat { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 22px 20px; border-bottom: 4px solid var(--orange); }
.stat b { display: block; font-size: 34px; font-weight: 800; line-height: 1.1; }
.stat b small { font-size: 16px; font-weight: 700; margin-left: 4px; color: #F4B183; }
.stat span { display: block; font-size: 14px; color: #C9D3DD; margin-top: 6px; }
.areas { display: grid; grid-template-columns: 1.6fr 1fr; gap: 24px; margin-top: 40px; align-items: start; }
.area h3 { margin-bottom: 12px; }
.area-tbl { border: 1px solid var(--line); }
.area-tbl tbody th { width: auto; font-weight: 600; }
.area-tbl td { text-align: right; white-space: nowrap; font-weight: 700; color: var(--navy); }
.area-tbl thead th:last-child { text-align: right; }
.area-tbl tr.total th, .area-tbl tr.total td { background: #FDF1E8; color: var(--navy); font-weight: 800; }
.eq-tbl { border: 1px solid var(--line); }
.eq-tbl tbody tr:nth-child(even) { background: #F8FAFB; }
.eq-tbl tbody th { width: auto; }
.eq-tbl td.no { color: var(--orange); font-weight: 800; width: 56px; }
.eq-tbl td.model { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 14px; color: var(--grey); }
.eq-tbl td.qty { white-space: nowrap; font-weight: 700; color: var(--navy); }
.note { font-size: 14px; color: var(--grey); margin-top: 12px; }
@media (max-width: 920px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .areas { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .stat b { font-size: 28px; }
  .eq-tbl thead { display: none; }
  .eq-tbl, .eq-tbl tbody, .eq-tbl tr { display: block; width: 100%; }
  .eq-tbl tr { display: grid; grid-template-columns: 40px 1fr auto; gap: 2px 10px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
  .eq-tbl td, .eq-tbl tbody th { padding: 0; border: 0; }
  .eq-tbl td.no { grid-row: span 2; width: auto; }
  .eq-tbl tbody th { grid-column: 2 / 4; }
  .eq-tbl td.model { grid-column: 2; font-size: 13px; }
  .eq-tbl td.qty { grid-column: 3; grid-row: 2; text-align: right; }
}
/* Menu: từ 15/10/2026 menu có 6 mục -> màn hình ≤1120px dùng nút ☰ (trước đây ≤920px) để chữ menu không bị xuống dòng.
   Màn hình 1121–1299px ẩn dòng chữ nhỏ dưới logo để đủ chỗ cho menu. */
@media (min-width: 1121px) {
  .logo-sub { display: none; }  /* menu 6 mục: ẩn dòng chữ nhỏ dưới logo trên màn hình rộng (20/10) */
}
@media (min-width: 1121px) { .nav > a { white-space: nowrap; } }  /* menu 6 mục không xuống dòng (20/10) */
@media (max-width: 1120px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 12px 24px 24px; gap: 4px; border-bottom: 1px solid var(--line); box-shadow: 0 12px 24px rgba(0,0,0,.08); }
  .hdr.open .nav { display: flex; }
  .nav > a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav .btn { text-align: center; margin-top: 12px; }
  .lang-sw { align-self: flex-start; margin-top: 12px; }
}
/* Phone / tablet layout */
@media (max-width: 920px) {
  .split, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .pillars { grid-template-columns: 1fr; }
  .gallery.g3 { grid-template-columns: 1fr 1fr; }
  .cta-in { flex-direction: column; align-items: flex-start; }
  .ftr-grid { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .sec { padding: 56px 0; }
  .hero-in { padding: 72px 16px 80px; }
  .hero .lead, .phero .lead { font-size: 16px; }
  .phero .wrap { padding-top: 56px; padding-bottom: 56px; }
  .hero::before, .phero::before { background: rgba(10,28,46,.78); }
  .cards, .gallery.g3, .gallery.g4, .checks { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  form .row2 { grid-template-columns: 1fr; }
  .form-box { padding: 22px; }
  .logo-sub { display: none; }
  .parts { padding: 14px; }
  .parts img.small { max-width: 100%; }   /* sửa 15/10: ảnh nhỏ trang Đúc nhôm làm trang cuộn ngang trên điện thoại */
}

/* ===== Trang Chống mài mòn (wear-solutions) — thêm 15/10/2026 ===== */
.ico { width: 44px; height: 44px; color: var(--navy); display: block; margin-bottom: 12px; }
.mechs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 32px; }
.mech { background: var(--light); border-radius: var(--radius); padding: 24px 24px 22px; }
.mech h3 { font-size: 17px; margin-bottom: 6px; }
.mech p { font-size: 14.5px; color: var(--grey); margin: 0; }

.sols { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 32px; }
.sol { background: #fff; border: 1px solid var(--line); border-top: 4px solid var(--navy); border-radius: 0 0 var(--radius) var(--radius); padding: 26px 28px 28px; display: flex; flex-direction: column; }
.sol .num { color: var(--orange); font-weight: 800; font-size: 26px; line-height: 1; margin-bottom: 12px; }
.sol p { color: var(--grey); font-size: 15px; }
.sol .chips { margin-top: auto; }
.chips.sm { gap: 8px; }
.chips.sm li { font-size: 13px; padding: 5px 12px; background: var(--light); border-color: var(--light); }

.stages { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 32px; }
.stage { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.stage h3 { background: var(--navy); color: #fff; font-size: 16px; margin: 0; padding: 14px 18px; border-radius: var(--radius) var(--radius) 0 0; }
.stage h3 .n { color: var(--orange); font-weight: 800; margin-right: 10px; }
.stage:not(:last-child)::after { content: "›"; position: absolute; right: -14px; top: 10px; color: var(--orange); font-weight: 800; font-size: 26px; line-height: 1; z-index: 1; }
.stage ul { list-style: none; margin: 0; padding: 8px 18px 14px; }
.stage li { position: relative; padding: 9px 0 9px 16px; border-bottom: 1px dashed var(--line); font-size: 14.5px; line-height: 1.5; }
.stage li:last-child { border-bottom: 0; }
.stage li::before { content: ""; position: absolute; left: 0; top: 16px; width: 7px; height: 7px; background: var(--orange); border-radius: 2px; }
.common { margin-top: 16px; background: var(--light); border-left: 4px solid var(--orange); border-radius: 0 var(--radius) var(--radius) 0; padding: 16px 20px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; }
.common h3 { font-size: 15px; margin: 0; }
.common .chips.sm li { background: #fff; border-color: var(--line); }

.plate-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: start; margin-top: 28px; }
.diagram { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.plate-svg { width: 100%; height: auto; display: block; }
.legend { list-style: none; padding: 0; margin: 18px 0 12px; }
.legend li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; line-height: 1.5; margin-bottom: 8px; }
.legend .mk { flex: 0 0 22px; height: 22px; border-radius: 50%; background: var(--orange); color: #fff; font-weight: 800; font-size: 12px; display: flex; align-items: center; justify-content: center; }
.diagram figcaption { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 0; }
.specs { margin: 0; }
.specs div { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.specs div:first-child { border-top: 2px solid var(--navy); }
.specs dt { font-weight: 700; color: var(--navy); }
.specs dd { margin: 0; font-size: 15px; }
.tbl.types { border: 1px solid var(--line); }
.tbl.types th, .tbl.types td { vertical-align: top; font-size: 14.5px; }
.tbl.types thead th { font-size: 13px; }
.tbl.types tbody th { width: 21%; }
.tbl.types td.g { font-weight: 700; color: var(--navy); white-space: nowrap; }
.variants { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 18px; }
.variant { background: #fff; border-left: 3px solid var(--orange); border-radius: 0 var(--radius) var(--radius) 0; padding: 18px 20px; }
.variant h4 { font-size: 16px; margin-bottom: 6px; }
.variant p { font-size: 14.5px; color: var(--grey); margin: 0; }

.tips { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 32px; }
.tip { background: var(--light); border-top: 4px solid var(--orange); border-radius: 0 0 var(--radius) var(--radius); padding: 22px 22px 14px; }
.tip h3 { font-size: 17px; }
.tip ul { margin: 0; padding-left: 18px; }
.tip li { font-size: 14px; line-height: 1.6; margin-bottom: 8px; }

/* Thẻ nổi bật "Chống mài mòn" trên trang chủ */
.feature { display: grid; grid-template-columns: 1.5fr 1fr; margin-top: 22px; background: var(--navy); color: #fff; border-radius: var(--radius); overflow: hidden; text-decoration: none; border-bottom: 4px solid var(--orange); transition: transform .15s, box-shadow .15s; }
.feature:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(15,42,68,.2); }
.feature-body { padding: 30px 34px; }
.feature .kicker { margin-bottom: 8px; color: var(--orange); }
body.lang-ja .stage li, body.lang-ja .tip li, body.lang-ja .tbl.types td { word-break: auto-phrase; }
.feature h3 { color: #fff; font-size: 22px; }
.feature p { color: #C9D3DD; font-size: 15px; }
.tags { list-style: none; padding: 0; margin: 0 0 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { border: 1px solid rgba(255,255,255,.35); border-radius: 40px; padding: 4px 12px; font-size: 13px; font-weight: 600; color: #fff; }
.feature-img { min-height: 220px; background: linear-gradient(90deg, var(--navy) 0%, rgba(15,42,68,0) 45%), url('/img/wear-hero.svg') center / cover no-repeat; }

@media (max-width: 1080px) {
  .tips, .stages { grid-template-columns: repeat(2, 1fr); }
  .stage:nth-child(2)::after { display: none; }
}
@media (max-width: 920px) {
  .mechs { grid-template-columns: 1fr 1fr; }
  .plate-grid { grid-template-columns: 1fr; gap: 28px; }
  .variants { grid-template-columns: 1fr; }
  .feature { grid-template-columns: 1fr; }
  .feature-img { min-height: 110px; order: -1; background: linear-gradient(0deg, var(--navy) 0%, rgba(15,42,68,0) 70%), url('/img/wear-hero.svg') center / cover no-repeat; }
}
@media (max-width: 760px) {
  .tbl.types thead { display: none; }
  .tbl.types, .tbl.types tbody, .tbl.types tr, .tbl.types tbody th, .tbl.types td { display: block; width: 100%; }
  .tbl.types tr { padding: 14px 16px; border-bottom: 1px solid var(--line); }
  .tbl.types tbody th { padding: 0 0 6px; border: 0; font-size: 16px; }
  .tbl.types td { padding: 4px 0; border: 0; }
  .tbl.types td::before { content: attr(data-label); display: block; font-size: 12px; font-weight: 700; color: var(--grey); letter-spacing: .04em; }
  .tbl.types td.g { white-space: normal; }
}
@media (max-width: 600px) {
  .mechs, .sols, .stages, .tips { grid-template-columns: 1fr; }
  .stage::after, .stage:not(:last-child)::after { display: none; }
  .sol { padding: 22px; }
  .feature-body { padding: 24px 22px; }
  .specs div { grid-template-columns: 1fr; gap: 2px; }
  .diagram { padding: 16px; }
}

/* ---------- Câu hỏi thường gặp (trang Đúc gang thép, thêm 19/10/2026) ---------- */
.faq { margin-top: 24px; display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 0 22px; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--navy); padding: 18px 0; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 0; top: 14px; font-size: 22px; color: var(--orange); font-weight: 800; }
.faq details[open] summary::after { content: '−'; }
.faq details p { color: var(--grey); margin: 0 0 18px; }

/* ---------- Ảnh sản phẩm đúc (trang casting) + trang Vật tư ngành thép (steel-supply) — 20/10/2026 ---------- */
.pgal { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 20px; }
.pgal figure { margin: 0; }
.pgal img { width: 100%; aspect-ratio: 3/4; object-fit: cover; border-radius: var(--radius); }
.pgal figcaption { font-size: 13.5px; font-weight: 600; color: var(--navy); margin-top: 8px; line-height: 1.45; }
.feature.steel .feature-img { background: linear-gradient(90deg, var(--navy) 0%, rgba(15,42,68,0) 45%), url('/img/steel-hero.jpg') center / cover no-repeat; }
.agent { background: var(--navy); color: #fff; border-left: 6px solid var(--orange); border-radius: var(--radius); padding: 22px 28px; }
.agent .kicker { margin-bottom: 6px; }
.agent p:last-child { margin: 0; font-size: 17px; font-weight: 600; }
.maker { background: #fff; border: 1px solid var(--line); border-top: 4px solid var(--navy); border-radius: var(--radius); padding: 22px 26px; margin-top: 16px; }
.maker .mk { color: var(--orange); font-weight: 700; font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 12px; }
.mstats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin-bottom: 16px; }
.mstats div { background: var(--light); border-radius: var(--radius); padding: 12px 10px; text-align: center; }
.mstats b { display: block; font-size: 22px; color: var(--navy); line-height: 1.2; }
.mstats span { font-size: 12.5px; color: var(--grey); }
.facts { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; font-size: 14.5px; }
.facts li { padding-left: 16px; position: relative; }
.facts li::before { content: ""; position: absolute; left: 0; top: .6em; width: 7px; height: 7px; background: var(--orange); }
.facts b { color: var(--navy); margin-right: 6px; }
.ptbl td.im { width: 150px; padding: 8px; }
.ptbl td.im img { width: 134px; aspect-ratio: 3/2; object-fit: cover; border-radius: 4px; }
.ptbl tbody th { width: 26%; vertical-align: middle; }
.ptbl td { vertical-align: middle; font-size: 15px; }
.ogrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 20px; }
.ocard { margin: 0; background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.ocard img { width: 100%; aspect-ratio: 3/2; object-fit: cover; }
.ocard figcaption { padding: 10px 14px; font-weight: 600; color: var(--navy); font-size: 14.5px; line-height: 1.45; }
.more-card { background: var(--navy); border-color: var(--navy); padding: 22px; display: flex; flex-direction: column; justify-content: center; }
.more-card h3 { color: var(--orange); font-size: 16px; }
.more-card p { color: #C9D3DD; font-size: 14.5px; margin: 0; }
.note.credit { font-size: 12px; }
body.lang-ja .ptbl td, body.lang-ja .maker p { word-break: auto-phrase; }
@media (max-width: 920px) {
  .pgal { grid-template-columns: repeat(3, 1fr); }
  .ogrid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .pgal { grid-template-columns: repeat(2, 1fr); }
  .ptbl thead { display: none; }
  .ptbl tr { display: grid; grid-template-columns: 110px 1fr; border-bottom: 1px solid var(--line); }
  .ptbl td.im { grid-row: span 2; width: auto; border: 0; }
  .ptbl td.im img { width: 100px; }
  .ptbl tbody th, .ptbl td { border: 0; width: auto; padding: 8px 10px; }
  .agent { padding: 18px 20px; }
}

/* ---------- Trang Máy cuộn & phụ tùng nhà máy cán (mill-equipment) — 22/10/2026 ---------- */
.feature.mill .feature-img { background: linear-gradient(90deg, var(--navy) 0%, rgba(15,42,68,0) 45%), url('/img/mill-reel1.jpg') center / cover no-repeat; }
.split .mstats { margin-top: 22px; margin-bottom: 0; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
.split .mstats b { font-size: 18px; white-space: nowrap; }
.apps { background: var(--light); border-left: 4px solid var(--orange); border-radius: var(--radius); padding: 24px 28px; }
.apps .facts { font-size: 15.5px; gap: 10px; }
.mprods { display: grid; gap: 22px; margin-top: 24px; }
.mprod { display: grid; grid-template-columns: 1.6fr 1fr; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.mprod:nth-child(even) { grid-template-columns: 1fr 1.6fr; }
.mprod:nth-child(even) .mprod-img { order: 2; }
.mprod-img { display: grid; gap: 4px; background: var(--line); }
.mprod-img.n3 { grid-template-columns: 1.4fr 1fr; grid-template-rows: 1fr 1fr; }
.mprod-img.n3 img:first-child { grid-row: span 2; }
.mprod-img.n2 { grid-template-columns: 1fr 1fr; }
.mprod-img img { width: 100%; height: 100%; min-height: 150px; object-fit: cover; display: block; }
.mprod-img.n2 img { aspect-ratio: 4/3; }
.mprod-body { padding: 28px; display: flex; flex-direction: column; justify-content: center; }
.mprod-body h3 { font-size: 21px; border-left: 4px solid var(--orange); padding-left: 12px; }
.mprod-body p { color: var(--grey); margin: 0; }
.svc5 { grid-template-columns: repeat(5, 1fr); margin-top: 24px; gap: 16px; }
.svc5 .pillar { padding: 22px 18px; }
.svc5 .pillar h3 { font-size: 17px; }
.svc5 .pillar p { font-size: 14.5px; }
.mgal { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 22px; }
.mgal figure { margin: 0; }
.mgal img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius); display: block; }
.mgal figcaption { font-size: 14px; font-weight: 600; color: var(--navy); margin-top: 8px; line-height: 1.45; }
.qflow { list-style: none; padding: 0; margin: 26px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; counter-reset: none; }
.qflow li { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 14px 16px; font-weight: 600; font-size: 15px; display: flex; align-items: center; gap: 12px; }
.qflow li span { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--orange); display: grid; place-items: center; font-size: 14px; }
body.lang-ja .mprod-body p, body.lang-ja .apps li { word-break: auto-phrase; }
@media (max-width: 1100px) {
  .svc5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 920px) {
  .mprod, .mprod:nth-child(even) { grid-template-columns: 1fr; }
  .mprod:nth-child(even) .mprod-img { order: 0; }
  .mgal { grid-template-columns: repeat(2, 1fr); }
  .qflow { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .svc5 { grid-template-columns: 1fr; }
  .mprod-img img { min-height: 110px; }
  .mprod-body { padding: 20px; }
  .qflow { grid-template-columns: 1fr; }
  .apps { padding: 20px; }
}
@media (max-width: 920px) {
  .feature.mill .feature-img { background: linear-gradient(0deg, var(--navy) 0%, rgba(15,42,68,0) 70%), url('/img/mill-reel1.jpg') center / cover no-repeat; }
}