/* ==========================================================================
   VITAL ORE — Design System
   Dark charcoal · metallic silver · copper. Industrial B2B.
   ========================================================================== */

/* ---------- Fonts (self-hosted — Google Fonts is blocked in China) ---------- */
@font-face {
	font-family: "Manrope";
	src: url("../fonts/manrope-var-latin.woff2") format("woff2");
	font-weight: 400 800;
	font-style: normal;
	font-display: swap;
}
@font-face {
	font-family: "Inter";
	src: url("../fonts/inter-var-latin.woff2") format("woff2");
	font-weight: 400 700;
	font-style: normal;
	font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
	--bg: #0d0f12;
	--bg-2: #15181d;
	--bg-3: #1d2128;
	--surface: #ffffff;
	--surface-alt: #f4f4f2;
	--ink: #111318;
	--ink-2: #2b2f36;
	--muted: #6b7280;
	--muted-2: #9ca3af;
	--copper: #d4922a;
	--copper-dark: #b8771a;
	--copper-light: #f0b85a;
	--copper-soft: rgba(212, 146, 42, 0.12);
	--silver: #c9ccd1;
	--silver-dark: #9aa0a8;
	--line: #e5e7eb;
	--line-dark: rgba(255, 255, 255, 0.1);
	--green: #22a06b;
	--red: #d64545;
	--amber: #e3a008;
	--wa: #25d366;

	--font-head: "Manrope", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
	--font-body: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;

	--radius: 16px;
	--radius-sm: 10px;
	--shadow-sm: 0 1px 2px rgba(17, 19, 24, 0.06), 0 2px 8px rgba(17, 19, 24, 0.06);
	--shadow-md: 0 8px 24px -8px rgba(17, 19, 24, 0.18), 0 2px 6px rgba(17, 19, 24, 0.06);
	--shadow-lg: 0 24px 60px -20px rgba(17, 19, 24, 0.35);
	--ease: cubic-bezier(0.22, 1, 0.36, 1);
	--header-h: 84px;
	--topbar-h: 38px;
	--container: 1240px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
	margin: 0;
	font-family: var(--font-body);
	font-size: 16px;
	line-height: 1.65;
	color: var(--ink);
	background: var(--surface);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--copper-dark); }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-family: var(--font-head); font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; color: inherit; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 700; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--copper); color: #000; }

/* ---------- Bilingual mechanics ---------- */
.vo-zh { display: none; }
html.lang-zh .vo-en { display: none; }
html.lang-zh .vo-zh { display: inline; }
html.lang-zh h1, html.lang-zh h2, html.lang-zh h3, html.lang-zh .vo-h1, html.lang-zh .vo-h2 { letter-spacing: 0; }
.vo-zh-inline { font-size: 0.86em; color: var(--muted-2); margin-left: 0.2em; }
.vo-lang {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 7px 12px;
	border: 1px solid var(--line);
	border-radius: 999px;
	font-size: 13px;
	font-weight: 600;
	letter-spacing: 0.04em;
	color: var(--muted);
	background: #fff;
	transition: border-color 0.2s;
}
.vo-lang:hover { border-color: var(--copper); }
.vo-lang__sep { color: var(--line); }
.vo-lang__opt { transition: color 0.2s; }
.vo-lang__opt.is-active { color: var(--copper-dark); }

/* ---------- Utilities ---------- */
.vo-container { max-width: var(--container); margin: 0 auto; padding: 0 24px; width: 100%; }
.vo-section { padding: 96px 0; position: relative; }
.vo-section--alt { background: var(--surface-alt); }
.vo-section--dark { background: var(--bg); color: #fff; }
.vo-section--dark .vo-h2, .vo-section--dark h3 { color: #fff; }
.vo-section--dark .vo-lead, .vo-section--dark p { color: rgba(255, 255, 255, 0.72); }
.vo-section--dark .vo-eyebrow { color: var(--copper-light); }
.vo-center { text-align: center; }
.vo-muted { color: var(--muted); }
.vo-small { font-size: 0.875rem; }
.vo-sr, .vo-skip { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.vo-skip:focus { position: fixed !important; top: 12px; left: 12px; width: auto; height: auto; margin: 0; padding: 10px 16px; clip: auto; background: var(--copper); color: #000; border-radius: 8px; z-index: 9999; font-weight: 700; }
.vo-icon { width: 1.1em; height: 1.1em; vertical-align: -0.15em; flex-shrink: 0; }
.vo-hp { position: absolute !important; left: -9999px !important; top: -9999px !important; opacity: 0; height: 0; overflow: hidden; }

/* ---------- Grid ---------- */
.vo-grid { display: grid; gap: 28px; }
.vo-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.vo-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.vo-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.vo-grid--minerals { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }

/* ---------- Typography ---------- */
.vo-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	margin: 0 0 16px;
	font-family: var(--font-head);
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--copper-dark);
}
.vo-eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; border-radius: 2px; }
.vo-eyebrow--light { color: var(--copper-light); }
.vo-h1 {
	font-size: clamp(2.4rem, 5vw, 4.2rem);
	font-weight: 800;
	line-height: 1.04;
	letter-spacing: -0.025em;
	margin: 0 0 22px;
	color: #fff;
}
.vo-h1__zh { display: block; font-size: 0.5em; font-weight: 600; color: var(--silver); margin-top: 10px; letter-spacing: 0.04em; }
.vo-h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.12; margin: 0 0 18px; color: var(--ink); }
.vo-lead { font-size: 1.125rem; line-height: 1.65; color: var(--muted); max-width: 68ch; }
.vo-section-head { max-width: 760px; margin-bottom: 52px; }
.vo-section-head .vo-lead { margin-bottom: 0; }
.vo-align-center { margin-left: auto; margin-right: auto; text-align: center; }
.vo-align-center .vo-lead { margin-left: auto; margin-right: auto; }
.vo-align-center .vo-eyebrow::before { display: none; }
.vo-section-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 52px; }
.vo-section-head-row .vo-section-head { margin-bottom: 0; }
.vo-section-head-row .vo-btn { flex-shrink: 0; margin-bottom: 6px; }

/* ---------- Buttons ---------- */
.vo-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	padding: 14px 24px;
	border-radius: 999px;
	font-family: var(--font-head);
	font-size: 15px;
	font-weight: 700;
	letter-spacing: 0.01em;
	line-height: 1;
	border: 1.5px solid transparent;
	white-space: nowrap;
	transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.2s, color 0.2s, border-color 0.2s;
	position: relative;
}
.vo-btn .vo-icon { width: 1em; height: 1em; transition: transform 0.25s var(--ease); }
.vo-btn:hover .vo-icon { transform: translateX(3px); }
.vo-btn--primary { background: var(--copper); color: #0d0f12; border-color: var(--copper); box-shadow: 0 6px 18px -6px rgba(212, 146, 42, 0.6); }
.vo-btn--primary:hover { background: var(--copper-light); border-color: var(--copper-light); color: #0d0f12; transform: translateY(-2px); box-shadow: 0 12px 24px -8px rgba(212, 146, 42, 0.7); }
.vo-btn--ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.vo-btn--ghost:hover { background: var(--ink); color: #fff; }
.vo-btn--outline-light { background: rgba(255, 255, 255, 0.04); color: #fff; border-color: rgba(255, 255, 255, 0.5); backdrop-filter: blur(6px); }
.vo-btn--outline-light:hover { background: #fff; color: var(--ink); border-color: #fff; }
.vo-btn--link { background: none; border-color: transparent; color: var(--copper-dark); padding-left: 0; padding-right: 0; }
.vo-btn--link:hover { color: var(--ink); }
.vo-section--dark .vo-btn--link { color: var(--copper-light); }
.vo-btn--sm { padding: 10px 18px; font-size: 13.5px; }
.vo-btn--lg { padding: 17px 30px; font-size: 16px; }
.vo-btn.is-loading { pointer-events: none; opacity: 0.8; }
.vo-btn.is-loading .vo-btn__label { visibility: hidden; }
.vo-btn.is-loading .vo-icon { display: none; }
.vo-btn.is-loading::after {
	content: "";
	position: absolute;
	left: 50%; top: 50%;
	width: 18px; height: 18px;
	margin: -9px 0 0 -9px;
	border: 2px solid rgba(0, 0, 0, 0.25);
	border-top-color: #0d0f12;
	border-radius: 50%;
	animation: vo-spin 0.7s linear infinite;
}
@keyframes vo-spin { to { transform: rotate(360deg); } }

/* ==========================================================================
   Header
   ========================================================================== */
.vo-topbar { background: var(--bg); color: rgba(255, 255, 255, 0.78); font-size: 12.5px; height: var(--topbar-h); border-bottom: 1px solid var(--line-dark); }
.vo-topbar__inner { display: flex; align-items: center; justify-content: space-between; height: 100%; gap: 24px; }
.vo-topbar__list { display: flex; gap: 26px; list-style: none; }
.vo-topbar__list li { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.vo-topbar__list .vo-icon { color: var(--copper); }
.vo-topbar__contact { display: flex; gap: 20px; }
.vo-topbar__contact a { display: inline-flex; align-items: center; gap: 6px; color: #fff; font-weight: 500; }
.vo-topbar__contact a:hover { color: var(--copper-light); }
.vo-topbar__contact .vo-icon { color: var(--copper); }

.vo-header {
	position: sticky;
	top: 0;
	z-index: 900;
	background: rgba(255, 255, 255, 0.9);
	backdrop-filter: saturate(160%) blur(14px);
	-webkit-backdrop-filter: saturate(160%) blur(14px);
	border-bottom: 1px solid var(--line);
	transition: box-shadow 0.3s, background 0.3s;
}
.vo-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: var(--header-h); transition: height 0.3s var(--ease); }
.vo-header.is-scrolled { box-shadow: 0 6px 24px -12px rgba(17, 19, 24, 0.25); background: rgba(255, 255, 255, 0.96); }
.vo-header.is-scrolled .vo-header__inner { height: 68px; }
/* Logo artwork is designed for a dark background: wrap it in a dark chip so it reads on white */
.vo-brand { display: inline-flex; align-items: center; flex-shrink: 0; background: var(--bg); border-radius: 12px; padding: 6px 12px; }
.vo-brand__img { height: 56px; width: auto; transition: height 0.3s var(--ease); }
.vo-header.is-scrolled .vo-brand__img { height: 46px; }
.vo-nav { flex: 1; display: flex; justify-content: center; }
.vo-menu { display: flex; gap: 4px; list-style: none; align-items: center; }
.vo-menu li { position: relative; }
.vo-menu > li > a {
	display: inline-flex;
	align-items: center;
	padding: 10px 14px;
	font-family: var(--font-head);
	font-size: 14.5px;
	font-weight: 600;
	color: var(--ink-2);
	border-radius: 8px;
	transition: color 0.2s, background 0.2s;
}
.vo-menu > li > a:hover, .vo-menu > li.current-menu-item > a, .vo-menu > li.current_page_item > a, .vo-menu > li.current-menu-ancestor > a { color: var(--copper-dark); background: var(--copper-soft); }
.vo-menu .sub-menu { display: none; position: absolute; top: 100%; left: 0; min-width: 220px; padding: 8px; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow-md); list-style: none; }
.vo-menu li:hover > .sub-menu, .vo-menu li:focus-within > .sub-menu { display: block; }
.vo-menu .sub-menu a { display: block; padding: 10px 12px; border-radius: 8px; font-size: 14px; font-weight: 500; }
.vo-menu .sub-menu a:hover { background: var(--surface-alt); color: var(--copper-dark); }
.vo-header__actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.vo-burger { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 10px; border: 1px solid var(--line); color: var(--ink); }
.vo-burger .vo-icon { width: 22px; height: 22px; }
.vo-burger__close { display: none; }
.vo-burger[aria-expanded="true"] .vo-burger__open { display: none; }
.vo-burger[aria-expanded="true"] .vo-burger__close { display: block; }
body.nav-open { overflow: hidden; }

/* ==========================================================================
   Hero (home)
   ========================================================================== */
.vo-hero { position: relative; min-height: 92vh; display: flex; flex-direction: column; justify-content: flex-end; color: #fff; background: var(--bg); overflow: hidden; isolation: isolate; }
.vo-hero__bg { position: absolute; inset: 0; background-size: cover; background-position: center; z-index: -2; animation: vo-kenburns 28s ease-in-out infinite alternate; transform-origin: center; }
@keyframes vo-kenburns { from { transform: scale(1); } to { transform: scale(1.08); } }
.vo-hero__overlay { position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(13, 15, 18, 0.94) 0%, rgba(13, 15, 18, 0.78) 42%, rgba(13, 15, 18, 0.35) 75%, rgba(13, 15, 18, 0.55) 100%), linear-gradient(0deg, rgba(13, 15, 18, 0.9) 0%, rgba(13, 15, 18, 0) 45%); }
.vo-hero__inner { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.75fr); gap: 56px; align-items: center; padding-top: 110px; padding-bottom: 72px; flex: 1; }
.vo-hero__content { max-width: 720px; }
.vo-hero__lead { font-size: 1.15rem; line-height: 1.65; color: rgba(255, 255, 255, 0.8); max-width: 62ch; margin-bottom: 32px; }
.vo-hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 36px; }
.vo-hero__badges { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; }
.vo-hero__badges li { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; font-size: 13px; font-weight: 500; border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 999px; background: rgba(255, 255, 255, 0.06); backdrop-filter: blur(6px); color: rgba(255, 255, 255, 0.92); }
.vo-hero__badges .vo-icon { color: var(--copper-light); }
.vo-hero__panel { background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 20px; padding: 30px 28px; backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%); box-shadow: var(--shadow-lg); position: relative; overflow: hidden; }
.vo-hero__panel::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--copper), var(--copper-light), var(--silver)); }
.vo-hero__panel-title { font-family: var(--font-head); font-size: 1.2rem; font-weight: 800; margin-bottom: 8px; }
.vo-hero__panel-text { font-size: 0.925rem; color: rgba(255, 255, 255, 0.7); margin-bottom: 20px; }
.vo-hero__panel-foot { display: flex; align-items: center; gap: 8px; margin-top: 16px; font-size: 13px; color: rgba(255, 255, 255, 0.65); }
.vo-hero__panel-foot .vo-icon { color: var(--copper-light); }
.vo-quick { display: flex; flex-direction: column; gap: 10px; }
.vo-quick select { height: 50px; padding: 0 44px 0 16px; border-radius: 12px; border: 1px solid rgba(255, 255, 255, 0.25); background: rgba(13, 15, 18, 0.65) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23d4922a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 14px center / 18px; color: #fff; font: inherit; font-size: 15px; appearance: none; -webkit-appearance: none; }
.vo-quick select option { color: var(--ink); background: #fff; }
.vo-quick .vo-btn { width: 100%; }
.vo-hero__strip { background: linear-gradient(90deg, rgba(212, 146, 42, 0.95), rgba(184, 119, 26, 0.95)); color: #0d0f12; position: relative; z-index: 1; }
.vo-hero__strip-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 20px; padding-top: 14px; padding-bottom: 14px; }
.vo-hero__strip a { display: inline-flex; align-items: center; gap: 9px; font-size: 13.5px; font-weight: 600; padding: 4px 0; transition: opacity 0.2s; }
.vo-hero__strip a:hover { opacity: 0.75; color: inherit; }
.vo-hero__strip strong { display: inline-flex; align-items: center; justify-content: center; min-width: 30px; height: 30px; padding: 0 6px; border-radius: 7px; background: rgba(13, 15, 18, 0.9); color: var(--copper-light); font-family: var(--font-head); font-size: 12.5px; font-weight: 800; letter-spacing: 0.02em; }

/* ==========================================================================
   Cards & content blocks
   ========================================================================== */
.vo-pillar { padding: 32px 28px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s; }
.vo-pillar:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(212, 146, 42, 0.45); }
.vo-pillar h3 { font-size: 1.15rem; margin: 20px 0 10px; }
.vo-pillar p { color: var(--muted); font-size: 0.95rem; margin: 0; }
.vo-pillar__icon { display: inline-flex; align-items: center; justify-content: center; width: 54px; height: 54px; border-radius: 14px; background: var(--bg); color: var(--copper); }
.vo-pillar__icon .vo-icon { width: 26px; height: 26px; }

.vo-card { padding: 32px 28px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease); }
.vo-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.vo-card > .vo-icon { width: 34px; height: 34px; color: var(--copper); margin-bottom: 18px; }
.vo-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.vo-card p { color: var(--muted); font-size: 0.95rem; }
.vo-card .vo-step__num { display: block; margin-bottom: 14px; }
.vo-card--dark { background: var(--bg-2); border-color: var(--line-dark); color: #fff; }
.vo-card--dark h3 { color: #fff; }
.vo-card--dark p { color: rgba(255, 255, 255, 0.7); }
.vo-card--dark:hover { box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.8); border-color: rgba(212, 146, 42, 0.4); }
.vo-card--process { background: var(--surface-alt); }
.vo-card--process .vo-btn { margin-top: 20px; }

.vo-checklist { list-style: none; display: grid; gap: 12px; margin: 24px 0 32px; }
.vo-checklist li { display: flex; gap: 12px; align-items: flex-start; line-height: 1.5; }
.vo-checklist .vo-icon { width: 22px; height: 22px; flex-shrink: 0; margin-top: 1px; padding: 3px; border-radius: 50%; background: var(--copper); color: #0d0f12; }
.vo-section--dark .vo-checklist li { color: rgba(255, 255, 255, 0.85); }
.vo-side-card .vo-checklist { margin: 0; gap: 10px; font-size: 0.925rem; }
.vo-list { list-style: none; display: grid; gap: 8px; }
.vo-list li { position: relative; padding-left: 20px; color: var(--ink-2); font-size: 0.95rem; }
.vo-list li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 8px; height: 8px; border-radius: 2px; background: var(--copper); transform: rotate(45deg); }

/* Steps (home dark section) */
.vo-steps { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px 24px; margin-bottom: 44px; }
.vo-step { padding: 26px 0 0; border-top: 1px solid var(--line-dark); position: relative; }
.vo-step::before { content: ""; position: absolute; top: -1px; left: 0; width: 44px; height: 2px; background: var(--copper); }
.vo-step h3 { font-size: 1.05rem; margin: 14px 0 8px; color: #fff; }
.vo-step p { font-size: 0.92rem; color: rgba(255, 255, 255, 0.65); margin: 0; }
.vo-step__num { font-family: var(--font-head); font-size: 2.6rem; font-weight: 800; line-height: 1; color: transparent; -webkit-text-stroke: 1.5px var(--copper); letter-spacing: -0.03em; }

/* Mineral card */
.vo-mineral-card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.3s; }
.vo-mineral-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(212, 146, 42, 0.5); }
.vo-mineral-card__media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-2); display: block; }
.vo-mineral-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.vo-mineral-card:hover .vo-mineral-card__media img { transform: scale(1.06); }
.vo-mineral-card__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13, 15, 18, 0.1), rgba(13, 15, 18, 0) 40%, rgba(13, 15, 18, 0.35)); pointer-events: none; }
.vo-mineral-card__symbol { position: absolute; top: 14px; left: 14px; z-index: 1; display: inline-flex; align-items: center; justify-content: center; min-width: 46px; height: 46px; padding: 0 10px; border-radius: 10px; background: var(--copper); color: #0d0f12; font-family: var(--font-head); font-weight: 800; font-size: 15px; letter-spacing: 0.02em; box-shadow: 0 6px 16px -6px rgba(0, 0, 0, 0.6); }
.vo-mineral-card__tier { position: absolute; top: 14px; right: 14px; z-index: 1; }
.vo-mineral-card__tier, .vo-tier-inline { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border-radius: 999px; font-size: 11.5px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; backdrop-filter: blur(6px); }
.vo-mineral-card__tier::before, .vo-tier-inline::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.vo-tier-core { background: rgba(34, 160, 107, 0.16); color: #16895a; border: 1px solid rgba(34, 160, 107, 0.4); }
.vo-tier-tbc { background: rgba(227, 160, 8, 0.18); color: #a8720a; border: 1px solid rgba(227, 160, 8, 0.45); }
.vo-tier-request { background: rgba(201, 204, 209, 0.3); color: #4b5563; border: 1px solid rgba(156, 163, 175, 0.5); }
.vo-mineral-card__tier.vo-tier-core { background: rgba(34, 160, 107, 0.9); color: #fff; border-color: transparent; }
.vo-mineral-card__tier.vo-tier-tbc { background: rgba(227, 160, 8, 0.92); color: #1a1200; border-color: transparent; }
.vo-mineral-card__tier.vo-tier-request { background: rgba(255, 255, 255, 0.9); color: var(--ink); border-color: transparent; }
.vo-page-hero .vo-tier-inline { background: rgba(255, 255, 255, 0.12); color: #fff; border-color: rgba(255, 255, 255, 0.3); }
.vo-mineral-card__body { display: flex; flex-direction: column; flex: 1; padding: 24px 24px 22px; }
.vo-mineral-card__title { font-size: 1.25rem; margin-bottom: 4px; }
.vo-mineral-card__title a:hover { color: var(--copper-dark); }
.vo-mineral-card__zh { display: block; font-size: 0.8em; font-weight: 600; color: var(--muted); margin-top: 2px; }
.vo-mineral-card__formula { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.vo-mineral-card__text { font-size: 0.925rem; color: var(--ink-2); margin-bottom: 16px; }
.vo-mineral-card__specs { list-style: none; border-top: 1px solid var(--line); margin-bottom: 14px; }
.vo-mineral-card__specs li { display: flex; justify-content: space-between; gap: 16px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 13.5px; }
.vo-mineral-card__specs span { color: var(--muted); }
.vo-mineral-card__specs strong { color: var(--ink); text-align: right; font-weight: 600; }
.vo-sgs-line { display: flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 600; color: var(--copper-dark); margin-bottom: 18px; }
.vo-sgs-line .vo-icon { width: 18px; height: 18px; }
.vo-mineral-card__actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-top: auto; }

/* Custom sourcing section */
.vo-custom__inner { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 64px; align-items: center; }
.vo-custom__text p { color: var(--ink-2); }
.vo-custom__media { margin: 0; position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.vo-custom__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.vo-custom__media figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 18px 22px; background: linear-gradient(0deg, rgba(13, 15, 18, 0.92), rgba(13, 15, 18, 0)); color: #fff; font-size: 14px; font-weight: 600; }

/* Quality */
.vo-quality__inner { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 64px; align-items: start; }
.vo-quality__media { margin: 0; position: sticky; top: calc(var(--header-h) + 24px); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.vo-quality__media img { width: 100%; aspect-ratio: 10 / 11; object-fit: cover; }
.vo-quality__stamp { position: absolute; right: 22px; bottom: 22px; display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 12px; align-items: center; padding: 14px 18px; background: var(--bg); color: #fff; border-radius: 14px; border: 1px solid rgba(212, 146, 42, 0.5); box-shadow: 0 16px 36px -14px rgba(0, 0, 0, 0.7); }
.vo-quality__stamp .vo-icon { grid-row: 1 / 3; width: 34px; height: 34px; color: var(--copper); }
.vo-quality__stamp strong { font-family: var(--font-head); font-size: 15px; letter-spacing: 0.04em; text-transform: uppercase; }
.vo-quality__stamp span { font-size: 12px; color: rgba(255, 255, 255, 0.65); }
.vo-quality__text > p { color: var(--ink-2); }
.vo-quality__points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin: 32px 0; }
.vo-quality__points > div { padding: 22px; border-radius: 14px; background: var(--surface-alt); border: 1px solid var(--line); }
.vo-quality__points .vo-icon { width: 26px; height: 26px; color: var(--copper); margin-bottom: 12px; }
.vo-quality__points h3 { font-size: 1rem; margin-bottom: 6px; }
.vo-quality__points p { font-size: 0.9rem; color: var(--muted); margin: 0; }

/* China contact chips */
.vo-china__contact { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 44px; }
.vo-china__contact > * { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-size: 14px; color: var(--ink-2); transition: border-color 0.2s, transform 0.2s; }
.vo-china__contact a:hover { border-color: var(--copper); transform: translateY(-2px); color: var(--ink); }
.vo-china__contact .vo-icon { color: var(--copper); }
.vo-china__contact strong { font-weight: 700; color: var(--ink); }

/* About teaser */
.vo-about-teaser__inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: center; }
.vo-about-teaser__inner p { color: var(--ink-2); }
.vo-about-teaser__media { margin: 0; position: relative; padding-bottom: 72px; padding-right: 48px; }
.vo-about-teaser__media > img:first-child { width: 100%; aspect-ratio: 14 / 10; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.vo-about-teaser__inset { position: absolute; right: 0; bottom: 0; width: 52%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 14px; border: 6px solid #fff; box-shadow: var(--shadow-lg); }

/* CTA band */
.vo-cta { position: relative; background-size: cover; background-position: center; color: #fff; isolation: isolate; }
.vo-cta::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(13, 15, 18, 0.95), rgba(13, 15, 18, 0.8) 60%, rgba(13, 15, 18, 0.6)); }
.vo-cta::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px; background: var(--copper); }
.vo-cta__inner { display: grid; grid-template-columns: minmax(0, 1.5fr) auto; gap: 48px; align-items: center; padding-top: 88px; padding-bottom: 88px; }
.vo-cta .vo-h2 { color: #fff; max-width: 20ch; }
.vo-cta .vo-lead { color: rgba(255, 255, 255, 0.72); margin: 0; }
.vo-cta__actions { display: flex; flex-direction: column; gap: 14px; align-items: stretch; }

/* ==========================================================================
   Inner page hero
   ========================================================================== */
.vo-page-hero { position: relative; min-height: 60vh; display: flex; align-items: flex-end; background: var(--bg) center / cover no-repeat; color: #fff; isolation: isolate; }
.vo-page-hero--mineral { min-height: 68vh; }
.vo-page-hero__overlay { position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(13, 15, 18, 0.95) 0%, rgba(13, 15, 18, 0.75) 50%, rgba(13, 15, 18, 0.45) 100%), linear-gradient(0deg, rgba(13, 15, 18, 0.85), rgba(13, 15, 18, 0.1) 60%); }
.vo-page-hero__inner { padding-top: 120px; padding-bottom: 64px; }
.vo-page-hero .vo-h1 { max-width: 18ch; margin-bottom: 18px; }
.vo-page-hero .vo-hero__lead { margin-bottom: 0; max-width: 64ch; }
.vo-page-hero .vo-hero__actions { margin-top: 28px; margin-bottom: 0; }
.vo-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: rgba(255, 255, 255, 0.6); margin-bottom: 26px; }
.vo-crumbs a { color: rgba(255, 255, 255, 0.85); }
.vo-crumbs a:hover { color: var(--copper-light); }
.vo-crumbs span:last-child { color: var(--copper-light); }
.vo-symbol-badge { display: inline-flex; align-items: center; justify-content: center; min-width: 38px; height: 38px; padding: 0 8px; border-radius: 9px; background: var(--copper); color: #0d0f12; font-family: var(--font-head); font-weight: 800; font-size: 14px; }
.vo-symbol-badge--sm { min-width: 30px; height: 30px; font-size: 12px; border-radius: 7px; }
.vo-page-hero .vo-eyebrow { gap: 12px; }
.vo-page-hero .vo-eyebrow::before { display: none; }

/* ==========================================================================
   Minerals page / detail
   ========================================================================== */
.vo-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.vo-filter button { padding: 10px 18px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff; font-family: var(--font-head); font-size: 14px; font-weight: 600; color: var(--ink-2); transition: all 0.2s; }
.vo-filter button:hover { border-color: var(--copper); color: var(--copper-dark); }
.vo-filter button.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.vo-filter-item { display: block; }
.vo-filter-item > .vo-mineral-card { height: 100%; }
.vo-filter-item.is-hidden { display: none; }
.vo-notice { display: flex; gap: 16px; align-items: flex-start; margin-top: 44px; padding: 22px 24px; border-radius: 14px; background: #fff8e8; border: 1px solid #f3dca7; border-left: 5px solid var(--amber); color: #5b4300; }
.vo-notice .vo-icon { width: 24px; height: 24px; flex-shrink: 0; color: var(--amber); margin-top: 2px; }
.vo-notice p { margin: 0; font-size: 0.925rem; line-height: 1.6; }
.vo-notice a { color: var(--copper-dark); text-decoration: underline; }

.vo-mineral-detail { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 44px; align-items: start; }
.vo-mineral-detail__main { display: grid; gap: 28px; }
.vo-mineral-detail__side { position: sticky; top: calc(var(--header-h) + 24px); display: grid; gap: 20px; }
.vo-spec-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.vo-spec-card__head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; padding: 24px 28px; background: var(--bg); color: #fff; }
.vo-spec-card__head h2 { font-size: 1.3rem; color: #fff; }
.vo-sgs-pill { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: var(--copper); color: #0d0f12; font-size: 12.5px; font-weight: 700; letter-spacing: 0.02em; }
.vo-spec-table th, .vo-spec-table td { padding: 14px 28px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--line); vertical-align: top; }
.vo-spec-table th { font-family: var(--font-head); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); background: var(--surface-alt); }
.vo-spec-table tbody tr:nth-child(even) { background: #fafaf9; }
.vo-spec-table td:first-child { color: var(--muted); width: 40%; }
.vo-spec-table td:last-child { font-weight: 600; }
.vo-spec-card__note { padding: 18px 28px; font-size: 13px; color: var(--muted); background: var(--surface-alt); margin: 0; }
.vo-side-card { padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.vo-side-card img { border-radius: 10px; margin-bottom: 12px; }
.vo-side-card h3 { font-size: 1.05rem; margin-bottom: 14px; }
.vo-side-card p { font-size: 0.95rem; margin-bottom: 8px; }
.vo-side-card a { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-2); word-break: break-all; }
.vo-side-card a:hover { color: var(--copper-dark); }
.vo-side-card .vo-icon { color: var(--copper); }
.vo-side-card--contact { background: var(--bg); color: #fff; border-color: var(--line-dark); }
.vo-side-card--contact h3 { color: #fff; }
.vo-side-card--contact a { color: rgba(255, 255, 255, 0.85); }
.vo-side-card--contact a:hover { color: var(--copper-light); }
.vo-side-card--contact .vo-muted { color: rgba(255, 255, 255, 0.6); }
.vo-side-card--contact .vo-btn { display: inline-flex; color: #0d0f12; }
.vo-side-list { list-style: none; display: grid; gap: 6px; }
.vo-side-list a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; margin: 0 -10px; border-radius: 8px; font-size: 14px; font-weight: 500; }
.vo-side-list a:hover { background: var(--surface-alt); }
.vo-mini-steps { list-style: none; counter-reset: mini; display: grid; gap: 12px; }
.vo-mini-steps li { counter-increment: mini; position: relative; padding-left: 38px; font-size: 0.95rem; color: var(--ink-2); }
.vo-mini-steps li::before { content: counter(mini, decimal-leading-zero); position: absolute; left: 0; top: 0.1em; font-family: var(--font-head); font-size: 12px; font-weight: 800; color: var(--copper-dark); width: 28px; height: 22px; border-bottom: 2px solid var(--copper); }
.vo-mini-steps strong { color: var(--ink); }

/* Timeline (process page) */
.vo-timeline { list-style: none; position: relative; max-width: 880px; margin: 0 auto; }
.vo-timeline::before { content: ""; position: absolute; left: 35px; top: 20px; bottom: 20px; width: 2px; background: linear-gradient(180deg, var(--copper), var(--line)); }
.vo-timeline__item { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 28px; padding-bottom: 44px; position: relative; }
.vo-timeline__item:last-child { padding-bottom: 0; }
.vo-timeline__marker { position: relative; width: 72px; height: 72px; border-radius: 50%; background: var(--bg); color: var(--copper); display: flex; align-items: center; justify-content: center; border: 3px solid #fff; box-shadow: 0 0 0 2px var(--copper); }
.vo-timeline__marker .vo-icon { width: 28px; height: 28px; }
.vo-timeline__marker span { position: absolute; right: -8px; bottom: -8px; width: 30px; height: 30px; border-radius: 50%; background: var(--copper); color: #0d0f12; font-family: var(--font-head); font-size: 12px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.vo-timeline__body { padding: 28px 30px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.vo-timeline__body h2 { font-size: 1.3rem; margin-bottom: 10px; }
.vo-timeline__body p { color: var(--ink-2); }
.vo-timeline__output { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 18px 0 0; padding: 12px 16px; border-radius: 10px; background: var(--copper-soft); font-size: 14px; color: var(--ink-2); }
.vo-timeline__output .vo-icon { color: var(--copper-dark); }
.vo-timeline__output strong { color: var(--ink); }

/* Doc rows */
.vo-doc { display: flex; gap: 18px; padding: 22px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); }
.vo-doc > .vo-icon { width: 30px; height: 30px; color: var(--copper); flex-shrink: 0; }
.vo-doc h3 { font-size: 1rem; margin-bottom: 4px; }
.vo-doc p { font-size: 0.9rem; color: var(--muted); margin: 0; }

/* Facts (about) */
.vo-about-facts { align-items: center; }
.vo-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 0; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.vo-facts > div { background: #fff; padding: 20px 22px; }
.vo-facts dt { font-size: 11.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.vo-facts dd { margin: 0; font-weight: 600; font-size: 15px; word-break: break-word; }
.vo-facts dd .vo-muted { font-weight: 400; font-style: italic; }

/* Contact cards */
.vo-contact-card { display: flex; flex-direction: column; padding: 30px 26px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s; color: var(--ink); }
a.vo-contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(212, 146, 42, 0.5); color: var(--ink); }
.vo-contact-card h3 { font-size: 0.95rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 20px 0 6px; }
.vo-contact-card p { font-size: 1.1rem; font-weight: 700; word-break: break-word; margin: 0; }
.vo-contact-card__hint { display: block; margin-top: 10px; font-size: 13px; color: var(--muted); }

/* Sourcing / contact layout */
.vo-sourcing { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 40px; align-items: start; margin-top: 8px; }
.vo-sourcing__side { display: grid; gap: 20px; position: sticky; top: calc(var(--header-h) + 24px); }
.vo-sourcing__side .vo-notice { margin-top: 0; }
.vo-form-card { padding: 40px; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow-md); }
.vo-form-card__title { font-size: 1.5rem; margin-bottom: 6px; }
.vo-form-card > .vo-small { margin-bottom: 26px; }
.vo-form-card .vo-h2 { margin-bottom: 8px; }
.vo-form-card .vo-muted a { color: var(--copper-dark); text-decoration: underline; }

/* FAQ */
.vo-faq-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 44px; align-items: start; }
.vo-faq__side { position: sticky; top: calc(var(--header-h) + 24px); display: grid; gap: 20px; }
.vo-faq { display: grid; gap: 12px; }
.vo-faq__item { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; transition: border-color 0.2s, box-shadow 0.2s; }
.vo-faq__item[open] { border-color: rgba(212, 146, 42, 0.5); box-shadow: var(--shadow-sm); }
.vo-faq__item summary { display: flex; align-items: center; gap: 18px; padding: 20px 24px; cursor: pointer; list-style: none; font-family: var(--font-head); font-weight: 700; font-size: 1.05rem; }
.vo-faq__item summary::-webkit-details-marker { display: none; }
.vo-faq__num { font-size: 12px; font-weight: 800; color: var(--copper-dark); letter-spacing: 0.05em; flex-shrink: 0; }
.vo-faq__q { flex: 1; }
.vo-faq__chev { width: 20px; height: 20px; color: var(--muted); transform: rotate(90deg); transition: transform 0.3s var(--ease), color 0.2s; flex-shrink: 0; }
.vo-faq__item[open] .vo-faq__chev { transform: rotate(-90deg); color: var(--copper-dark); }
.vo-faq__a { padding: 0 24px 24px 58px; color: var(--ink-2); font-size: 0.975rem; animation: vo-fade 0.35s var(--ease); }
@keyframes vo-fade { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

/* Map */
.vo-map iframe { width: 100%; height: 420px; border: 0; display: block; filter: grayscale(0.6) contrast(1.05); }

/* 404 */
.vo-404 { min-height: calc(100vh - var(--header-h) - var(--topbar-h)); display: flex; align-items: center; background: var(--bg) url("../img/cta-bg.jpg") center / cover no-repeat; position: relative; color: #fff; isolation: isolate; }
.vo-404::before { content: ""; position: absolute; inset: 0; z-index: -1; background: rgba(13, 15, 18, 0.9); }
.vo-404__inner { text-align: center; padding-top: 80px; padding-bottom: 80px; display: flex; flex-direction: column; align-items: center; }
.vo-404__logo { margin-bottom: 28px; }
.vo-404 .vo-hero__lead { margin: 0 auto 32px; }
.vo-404 .vo-hero__actions { justify-content: center; margin: 0; }
.vo-404 .vo-eyebrow::before { display: none; }
.vo-404 .vo-eyebrow { font-size: 1rem; }

/* Blog / posts fallback */
.vo-post__thumb { display: block; margin: -32px -28px 20px; border-radius: var(--radius) var(--radius) 0 0; overflow: hidden; aspect-ratio: 4/3; }
.vo-post__thumb img { width: 100%; height: 100%; object-fit: cover; }
.vo-post h3 a:hover { color: var(--copper-dark); }
.vo-pagination { margin-top: 40px; display: flex; justify-content: center; }
.vo-pagination .page-numbers { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 12px; margin: 0 3px; border-radius: 8px; border: 1px solid var(--line); font-weight: 600; font-size: 14px; }
.vo-pagination .page-numbers.current { background: var(--ink); color: #fff; border-color: var(--ink); }
.vo-search { display: flex; gap: 10px; }
.vo-search input { flex: 1; height: 48px; padding: 0 16px; border: 1px solid var(--line); border-radius: 999px; font: inherit; }
.vo-search .vo-btn { padding: 0 18px; }

/* ==========================================================================
   Forms
   ========================================================================== */
.vo-form { position: relative; }
.vo-form__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 22px; }
.vo-field { display: flex; flex-direction: column; gap: 7px; }
.vo-field--wide { grid-column: 1 / -1; }
.vo-field label { font-size: 13.5px; font-weight: 600; color: var(--ink-2); }
.vo-field .req { color: var(--copper-dark); }
.vo-field input, .vo-field select, .vo-field textarea {
	width: 100%;
	height: 48px;
	padding: 0 16px;
	font: inherit;
	font-size: 15px;
	color: var(--ink);
	background: #fff;
	border: 1.5px solid var(--line);
	border-radius: var(--radius-sm);
	transition: border-color 0.2s, box-shadow 0.2s;
	-webkit-appearance: none;
	appearance: none;
}
.vo-field textarea { height: auto; min-height: 120px; padding: 13px 16px; resize: vertical; line-height: 1.55; }
.vo-field select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; background-size: 18px; padding-right: 44px; }
.vo-field input::placeholder, .vo-field textarea::placeholder { color: #a7adb6; }
.vo-field input:focus, .vo-field select:focus, .vo-field textarea:focus { outline: none; border-color: var(--copper); box-shadow: 0 0 0 4px rgba(212, 146, 42, 0.18); }
.vo-field.has-error input, .vo-field.has-error select, .vo-field.has-error textarea { border-color: var(--red); box-shadow: 0 0 0 4px rgba(214, 69, 69, 0.12); }
.vo-field__err { display: none; font-size: 12.5px; color: var(--red); }
.vo-field.has-error .vo-field__err { display: block; }
.vo-form__consent { margin: 22px 0 18px; font-size: 12.5px; color: var(--muted); line-height: 1.55; }
.vo-form .vo-btn[type="submit"] { min-width: 260px; }
.vo-form__msg { display: block; padding: 16px 18px; margin: 20px 0; border-radius: 12px; font-size: 15px; font-weight: 500; line-height: 1.5; border: 1px solid transparent; }
.vo-form__msg[hidden] { display: none; }
.vo-form__msg.is-ok { background: #e9f8f0; color: #0f6b44; border-color: #a9e4c6; }
.vo-form__msg.is-err { background: #fdeeee; color: #8f1f1f; border-color: #f2b8b8; }

/* ==========================================================================
   Footer
   ========================================================================== */
.vo-footer { background: var(--bg); color: rgba(255, 255, 255, 0.72); padding: 80px 0 32px; border-top: 4px solid var(--copper); font-size: 14.5px; }
.vo-footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid var(--line-dark); }
.vo-footer__brand img { width: 200px; height: auto; margin-bottom: 22px; }
.vo-footer__brand p { max-width: 44ch; line-height: 1.7; }
.vo-footer__reg { font-size: 13px; color: rgba(255, 255, 255, 0.5); margin-top: 12px; }
.vo-footer__col h3 { font-family: var(--font-head); font-size: 12px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--silver); margin-bottom: 20px; }
.vo-footer__col ul { list-style: none; display: grid; gap: 10px; }
.vo-footer__col a { color: rgba(255, 255, 255, 0.78); transition: color 0.2s; }
.vo-footer__col a:hover { color: var(--copper-light); }
.vo-footer__contact li { display: flex; align-items: flex-start; gap: 10px; line-height: 1.5; }
.vo-footer__contact .vo-icon { color: var(--copper); width: 18px; height: 18px; margin-top: 3px; }
.vo-footer__contact a, .vo-footer__contact span { word-break: break-word; }
.vo-footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; padding-top: 28px; font-size: 13px; color: rgba(255, 255, 255, 0.5); }
.vo-footer__bottom p { margin: 0; }
.vo-footer__note { max-width: 70ch; font-size: 12px; line-height: 1.6; color: rgba(255, 255, 255, 0.4); }

/* Floating WhatsApp */
.vo-float-wa { position: fixed; right: 22px; bottom: 22px; z-index: 850; display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px 12px 14px; border-radius: 999px; background: var(--wa); color: #fff; font-weight: 700; font-size: 14px; box-shadow: 0 10px 28px -8px rgba(37, 211, 102, 0.7); transition: transform 0.25s var(--ease), box-shadow 0.25s; }
.vo-float-wa:hover { transform: translateY(-3px); color: #fff; box-shadow: 0 16px 32px -10px rgba(37, 211, 102, 0.8); }
.vo-float-wa svg { width: 26px; height: 26px; }

/* ==========================================================================
   Reveal animation
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease) var(--d, 0ms), transform 0.7s var(--ease) var(--d, 0ms); }
.reveal.is-visible { opacity: 1; transform: none; }
html.no-js .reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
	.reveal { opacity: 1; transform: none; }
	.vo-hero__bg { animation: none; }
}

/* ==========================================================================
   WordPress content / prose
   ========================================================================== */
.vo-prose { font-size: 1.05rem; line-height: 1.75; color: var(--ink-2); }
.vo-prose--narrow { max-width: 820px; }
.vo-prose h2, .vo-prose h3, .vo-prose h4 { color: var(--ink); margin: 1.8em 0 0.6em; }
.vo-prose h2 { font-size: 1.7rem; }
.vo-prose h3 { font-size: 1.3rem; }
.vo-prose h4 { font-size: 1.1rem; }
.vo-prose > :first-child { margin-top: 0; }
.vo-prose a { color: var(--copper-dark); text-decoration: underline; text-underline-offset: 2px; }
.vo-prose ul, .vo-prose ol { margin: 0 0 1.2em; padding-left: 1.4em; }
.vo-prose li { margin-bottom: 0.4em; }
.vo-prose blockquote { margin: 1.5em 0; padding: 1em 1.5em; border-left: 4px solid var(--copper); background: var(--surface-alt); border-radius: 0 12px 12px 0; font-style: italic; }
.vo-prose img { border-radius: 12px; }
.vo-prose table { margin: 1.5em 0; font-size: 0.95rem; }
.vo-prose th, .vo-prose td { padding: 10px 14px; border: 1px solid var(--line); text-align: left; }
.vo-prose th { background: var(--surface-alt); }
.vo-prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.5em 0; }
.vo-prose__thumb { margin: 0 0 2em; border-radius: var(--radius); overflow: hidden; }
.vo-page-links { margin-top: 2em; display: flex; gap: 8px; }
.alignwide { margin-left: calc(50% - 50vw + 24px); margin-right: calc(50% - 50vw + 24px); max-width: none; }
.alignfull { margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw); max-width: none; width: 100vw; }
.aligncenter { display: block; margin-left: auto; margin-right: auto; }
.alignleft { float: left; margin: 0.4em 1.5em 1em 0; }
.alignright { float: right; margin: 0.4em 0 1em 1.5em; }
.wp-block-image img { border-radius: 12px; }
.wp-block-image figcaption, .wp-caption-text { font-size: 0.875rem; color: var(--muted); text-align: center; margin-top: 0.6em; }
.wp-block-button__link { background: var(--copper); color: #0d0f12; border-radius: 999px; padding: 14px 24px; font-weight: 700; }
.wp-block-quote { border-left-color: var(--copper); }
.screen-reader-text { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(1px, 1px, 1px, 1px); }
.sticky, .bypostauthor, .gallery-caption { display: inherit; }

/* Admin bar offset */
body.admin-bar .vo-header { top: 32px; }
@media (max-width: 782px) { body.admin-bar .vo-header { top: 46px; } }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1100px) {
	.vo-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.vo-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.vo-hero__inner { grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr); gap: 40px; }
	.vo-mineral-detail { grid-template-columns: minmax(0, 1fr) 300px; gap: 32px; }
	.vo-sourcing { grid-template-columns: minmax(0, 1fr) 320px; gap: 28px; }
	.vo-faq-layout { grid-template-columns: minmax(0, 1fr) 300px; }
	.vo-footer__grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 32px; }
	.vo-topbar__list li:nth-child(3) { display: none; }
	.vo-menu > li > a { padding: 10px 10px; font-size: 14px; }
}

@media (max-width: 960px) {
	:root { --header-h: 72px; }
	.vo-section { padding: 72px 0; }
	.vo-grid--3, .vo-grid--minerals { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.vo-burger { display: inline-flex; }
	.vo-header__cta { display: none; }
	.vo-topbar { display: none; }
	.vo-nav { position: fixed; left: 0; right: 0; bottom: 0; top: var(--header-h); z-index: 890; background: var(--bg); padding: 28px 24px 40px; overflow-y: auto; transform: translateX(100%); opacity: 0; visibility: hidden; pointer-events: none; transition: transform 0.4s var(--ease), opacity 0.3s, visibility 0.3s; display: block; }
	/* Closed drawer is translated off-canvas; clip it so it cannot widen the page (fixes horizontal scroll on phones). */
	html, body { overflow-x: clip; }
	@supports not (overflow-x: clip) { html, body { overflow-x: hidden; } }
	.vo-nav.is-open { pointer-events: auto; }
	/* backdrop-filter turns the sticky header into the containing block of the fixed drawer, collapsing it
	   to the header height (only the first menu item showed). Use a solid header at drawer breakpoints instead. */
	.vo-header { backdrop-filter: none; -webkit-backdrop-filter: none; background: #fff; }
	.vo-nav.is-open { transform: none; opacity: 1; visibility: visible; }
	body.admin-bar .vo-nav { top: calc(var(--header-h) + 46px); }
	.vo-menu { flex-direction: column; align-items: stretch; gap: 4px; }
	.vo-menu > li > a { display: flex; padding: 16px 12px; font-size: 1.25rem; color: #fff; border-bottom: 1px solid var(--line-dark); border-radius: 0; }
	.vo-menu > li > a:hover, .vo-menu > li.current-menu-item > a, .vo-menu > li.current_page_item > a { background: none; color: var(--copper-light); }
	.vo-menu .sub-menu { display: block; position: static; background: none; border: 0; box-shadow: none; padding: 0 0 8px 20px; }
	.vo-menu .sub-menu a { color: rgba(255, 255, 255, 0.75); }
	.vo-menu::after { content: ""; display: block; height: 72px; }
	.vo-hero { min-height: auto; }
	.vo-hero__inner { grid-template-columns: 1fr; gap: 36px; padding-top: 72px; padding-bottom: 56px; }
	.vo-hero__panel { max-width: 560px; }
	.vo-custom__inner, .vo-quality__inner, .vo-about-teaser__inner, .vo-grid--2 { grid-template-columns: 1fr; gap: 40px; }
	.vo-quality__media { position: static; order: -1; max-width: 640px; }
	.vo-quality__media img { aspect-ratio: 4/3; }
	.vo-about-teaser__media { max-width: 640px; }
	.vo-cta__inner { grid-template-columns: 1fr; gap: 32px; padding-top: 72px; padding-bottom: 72px; }
	.vo-cta__actions { flex-direction: row; flex-wrap: wrap; }
	.vo-mineral-detail, .vo-sourcing, .vo-faq-layout { grid-template-columns: 1fr; }
	.vo-mineral-detail__side, .vo-sourcing__side, .vo-faq__side { position: static; }
	.vo-mineral-detail__side { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.vo-mineral-detail__side .vo-side-card:first-child { grid-column: 1 / -1; }
	.vo-footer__grid { grid-template-columns: 1fr 1fr; }
	.vo-footer__brand { grid-column: 1 / -1; }
	.vo-section-head-row { flex-direction: column; align-items: flex-start; gap: 20px; }
	.vo-page-hero { min-height: 48vh; }
	.vo-page-hero__inner { padding-top: 90px; padding-bottom: 48px; }
	.vo-form-card { padding: 30px 26px; }
}

@media (max-width: 720px) {
	body { font-size: 15.5px; }
	.vo-section { padding: 60px 0; }
	.vo-container { padding: 0 18px; }
	.vo-grid, .vo-grid--3, .vo-grid--4, .vo-grid--minerals { grid-template-columns: 1fr; gap: 20px; }
	.vo-steps { grid-template-columns: 1fr; }
	.vo-h1 { font-size: clamp(2.1rem, 9vw, 3rem); }
	.vo-h2 { font-size: clamp(1.6rem, 6.5vw, 2.1rem); }
	.vo-hero__actions .vo-btn, .vo-cta__actions .vo-btn, .vo-404 .vo-btn { width: 100%; }
	.vo-hero__strip-inner { justify-content: flex-start; gap: 6px 18px; }
	.vo-quality__points { grid-template-columns: 1fr; }
	.vo-form__grid { grid-template-columns: 1fr; }
	.vo-form .vo-btn[type="submit"] { width: 100%; }
	.vo-spec-card__head { padding: 20px; }
	.vo-spec-table th, .vo-spec-table td { padding: 12px 18px; font-size: 14px; }
	.vo-spec-card__note { padding: 14px 18px; }
	.vo-timeline::before { left: 27px; }
	.vo-timeline__item { grid-template-columns: 56px minmax(0, 1fr); gap: 18px; }
	.vo-timeline__marker { width: 56px; height: 56px; }
	.vo-timeline__marker .vo-icon { width: 22px; height: 22px; }
	.vo-timeline__body { padding: 22px; }
	.vo-mineral-detail__side { grid-template-columns: 1fr; }
	.vo-footer__grid { grid-template-columns: 1fr; gap: 36px; }
	.vo-footer { padding-top: 56px; }
	.vo-float-wa { right: 14px; bottom: 14px; padding: 12px; }
	.vo-float-wa span { display: none; }
	.vo-about-teaser__media { padding-right: 20px; padding-bottom: 50px; }
	.vo-faq__item summary { padding: 16px 18px; gap: 12px; font-size: 1rem; }
	.vo-faq__a { padding: 0 18px 20px 18px; }
	.vo-brand__img { height: 44px; }
	.vo-header.is-scrolled .vo-brand__img { height: 40px; }
	.vo-mineral-card__actions { flex-direction: column; align-items: stretch; }
	.vo-mineral-card__actions .vo-btn { justify-content: center; }
	.vo-facts { grid-template-columns: 1fr; }
	.vo-map iframe { height: 320px; }
}

@media (max-width: 480px) {
	.vo-hero__panel { padding: 22px 18px; }
	.vo-lang { padding: 6px 10px; font-size: 12px; }
	.vo-header__actions { gap: 8px; }
	.vo-brand { padding: 4px 8px; }
	.vo-brand__img { height: 38px; }
	.vo-hero__badges li { font-size: 12px; padding: 7px 11px; }
	.vo-china__contact > * { width: 100%; justify-content: center; }
	.vo-form-card { padding: 24px 18px; }
	.vo-eyebrow { font-size: 11px; letter-spacing: 0.14em; }
}

/* Print */
@media print {
	.vo-topbar, .vo-header, .vo-float-wa, .vo-cta, .vo-hero__panel, .vo-btn { display: none !important; }
	.reveal { opacity: 1 !important; transform: none !important; }
	body { color: #000; }
}